CN107115140B - Internal fixing device for spinal column reinforced pedicle screw - Google Patents
Internal fixing device for spinal column reinforced pedicle screw Download PDFInfo
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- CN107115140B CN107115140B CN201710370586.4A CN201710370586A CN107115140B CN 107115140 B CN107115140 B CN 107115140B CN 201710370586 A CN201710370586 A CN 201710370586A CN 107115140 B CN107115140 B CN 107115140B
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- 239000012528 membrane Substances 0.000 claims abstract description 162
- 238000002347 injection Methods 0.000 claims description 173
- 239000007924 injection Substances 0.000 claims description 173
- 239000002639 bone cement Substances 0.000 claims description 131
- 238000007789 sealing Methods 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 208000002193 Pain Diseases 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000005198 spinal stenosis Diseases 0.000 description 2
- 208000008035 Back Pain Diseases 0.000 description 1
- 206010008313 Cervical spinal stenosis Diseases 0.000 description 1
- 206010022562 Intermittent claudication Diseases 0.000 description 1
- 208000003618 Intervertebral Disc Displacement Diseases 0.000 description 1
- 206010050296 Intervertebral disc protrusion Diseases 0.000 description 1
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 201000001880 Sexual dysfunction Diseases 0.000 description 1
- 206010041591 Spinal osteoarthritis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 208000036319 cervical spondylosis Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 208000021156 intermittent vascular claudication Diseases 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 206010025005 lumbar spinal stenosis Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000862 numbness Toxicity 0.000 description 1
- 231100000872 sexual dysfunction Toxicity 0.000 description 1
- 208000005801 spondylosis Diseases 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model provides a be used for backbone to strengthen pedicle of vertebral arch screw internal fixation device, including pedicle of vertebral arch screw, including inflation fixed cover and head membrane cover, inflation fixed cover is including the fixed cover pipe shaft of inflation and set up at the first inflation piece of inflation fixed cover pipe shaft head, second inflation piece and third inflation piece, be equipped with first inflation piece membrane pole left jack on the first inflation piece, first inflation piece membrane cover slot and first inflation piece membrane pole right jack, be equipped with second inflation piece membrane pole left jack on the second inflation piece, second inflation piece membrane cover slot and second inflation piece membrane pole right jack, be equipped with third inflation piece membrane pole left jack on the third inflation piece, third inflation piece membrane cover slot and third inflation piece membrane pole right jack, consequently, the fixed cover of inflation is firmly fixed on the backbone, thereby pedicle of vertebral arch screw also installs more firmly, avoid taking place pedicle of vertebral arch screw loosening, the not firm condition of fixing.
Description
Technical Field
The invention relates to an internal fixation device for a spinal reinforcing pedicle screw.
Background
The diseases such as spine fracture, spine tumor, cervical spondylosis, cervical spinal stenosis, lumbar intervertebral disc protrusion, lumbar spinal stenosis, unstable lumbar vertebra segment, lumbar vertebra slippage and the like are quite common clinically. These diseases can cause pain, inability to stand, pain in the neck and shoulder, lumbago and numbness in the lower extremities, intermittent claudication, and even clinical symptoms of bowel movement and sexual dysfunction, severely affecting the patient's life health and quality of life. Treatment of these patients often requires spinal fixation techniques.
In 1959, boucher et al first applied pedicle screw fixation to the spine. In 1970, clinical cases were reported successively in france and swiss. The pedicle screw devices are widely accepted after the 80 s of the last century through continuous improvement, chi Yonglong and the like are used for fixing the upper thoracic vertebrae, and the cervical pedicle screw fixing technology is developed successively later, so that the pedicle screw devices become the most common technology for spinal surgery.
Along with the continuous development of the operation, more and more complications are found, one of which is that the screw is loosened and is not firmly fixed, or the first time of the nail placement in the operation is not good in position and cannot be adjusted, the screw is difficult to take out after being placed, and the screw cannot be taken out after being driven into bone cement. Especially for osteoporosis patients, the screw adjustment is more difficult, the holding force of the screw is poorer, and once misplacement is carried out, the screw adjustment is difficult.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: provides the internal fixing device for the spine reinforced pedicle screw, which can strengthen the fixation effect of the spine pedicle screw and is convenient to adjust and take out.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a be used for backbone to strengthen pedicle screw internal fixation device, includes pedicle screw, including inflation fixed sleeve and head membrane cover, head membrane cover is used for sealed inflation fixed sleeve head, pedicle screw includes pedicle screw fixed thread section and pedicle screw fixing base, be equipped with pedicle screw fixing base screw hole and pedicle screw fixing base connection slotted hole on the pedicle screw fixing base, be equipped with countersunk head fixation nut on the pedicle screw fixing base screw hole, be equipped with the screw hole on the inflation fixed sleeve, pedicle screw fixed thread section cooperatees with the screw hole, inflation fixed sleeve includes inflation fixed sleeve pipe body and sets up first inflation piece, second inflation piece and the third inflation piece at inflation fixed sleeve pipe body head, first inflation piece, second inflation piece and third inflation piece can outwards strut and cooperate, be equipped with first inflation piece membrane rod jack, first inflation piece membrane sleeve slot and first inflation piece membrane rod jack on the first inflation piece, be equipped with second inflation piece membrane rod jack on the second inflation piece, second inflation piece membrane sleeve and third inflation membrane rod jack, the inflation membrane is established to the left and right in the jack, the inflation membrane is established to the inflation membrane, the inflation membrane is established to the third inflation membrane rod jack, and third inflation membrane plug is established to the left and right in the inflation membrane sleeve pipe jack, and third inflation membrane plug rod jack, and third inflation membrane plug set up in the jack, left and third inflation membrane plug rod jack, left and third inflation membrane plug in the jack, the second right inserting rod is inserted into the right inserting hole of the second expansion sheet membrane rod, the third left inserting rod is inserted into the left inserting hole of the third expansion sheet membrane rod, the third right inserting rod is inserted into the right inserting hole of the third expansion sheet membrane rod, the sealing membrane sleeve is inserted into the first expansion sheet membrane sleeve inserting groove, the second expansion sheet membrane sleeve inserting groove and the third expansion sheet membrane sleeve inserting groove, so that a gap between the first expansion sheet and the second expansion sheet, a gap between the second expansion sheet and the third expansion sheet, a gap between the third expansion sheet and the first expansion sheet, a through hole between the first expansion sheet, the second expansion sheet and the third expansion sheet are sealed, and when the pedicle screw fixing thread section completely enters the threaded hole to outwards open the first expansion sheet, the second expansion sheet and the third expansion sheet, the first left inserting rod, the first right inserting rod, the second left inserting rod, the third left inserting rod and the third right inserting rod drive the sealing membrane sleeve to stretch and keep sealing.
The invention provides an internal fixing device for a spine reinforced pedicle screw, which has the beneficial effects that: the pedicle screw comprises an expansion fixing sleeve and a head membrane sleeve, the head membrane sleeve is used for sealing the head of the expansion fixing sleeve, the pedicle screw comprises a pedicle screw fixing threaded section and a pedicle screw fixing seat, a pedicle screw fixing seat threaded hole and a pedicle screw fixing seat connecting slot hole are formed in the pedicle screw fixing seat, a countersunk head fixing nut is arranged on the pedicle screw fixing seat threaded hole, a threaded hole is formed in the expansion fixing sleeve, the pedicle screw fixing threaded section is matched with the threaded hole, the expansion fixing sleeve comprises an expansion fixing sleeve pipe body and a first expansion piece, a second expansion piece and a third expansion piece which are arranged at the head of the expansion fixing sleeve pipe body, the first expansion piece, the second expansion piece and the third expansion piece can be outwards spread and matched, a first expansion piece membrane rod left jack, a first expansion piece membrane sleeve slot and a first expansion piece membrane rod right jack are formed in the first expansion piece, a second expansion piece membrane rod left jack, a second expansion piece membrane sleeve slot and a second expansion piece membrane rod right jack are formed in the second expansion piece, a third expansion piece is arranged at the left expansion piece and right expansion piece membrane rod jack, a third expansion piece is arranged at the left expansion piece and the third expansion piece membrane sleeve rod jack, and the third expansion piece is arranged at the left expansion piece and the third expansion piece plug rod jack, and the third expansion piece plug rod plug jack are arranged at the left expansion piece and the third expansion piece plug rod jack and the third expansion piece plug rod plug hole, the third left inserting rod is inserted into the left inserting hole of the third expansion sheet membrane rod, the third right inserting rod is inserted into the right inserting hole of the third expansion sheet membrane rod, the sealing membrane sleeve is inserted into the first expansion sheet membrane sleeve inserting groove, the second expansion sheet membrane sleeve inserting groove and the third expansion sheet membrane sleeve inserting groove, so that a gap between the first expansion sheet and the second expansion sheet, a gap between the second expansion sheet and the third expansion sheet, a gap between the third expansion sheet and the first expansion sheet, through holes between the first expansion sheet, the second expansion sheet and the third expansion sheet are sealed, when the pedicle screw fixing thread section completely enters the threaded hole to outwards open the first expansion sheet, the second expansion sheet and the third expansion sheet, the sealing membrane sleeve is driven by the first left inserting rod, the first right inserting rod, the second left inserting rod, the second right inserting rod, the third left inserting rod and the third right inserting rod to be stretched and kept sealed,
therefore, in the spine is gone into with inflation fixation cover earlier during the use, then screw in pedicle screw, pedicle screw fixed screw thread section of pedicle screw gets into the screw hole of inflation fixation cover completely afterwards, first inflation piece, the outside struts of second inflation piece and third inflation piece, simultaneously first left inserted bar, first right inserted bar, the left inserted bar of second, the right inserted bar of second, third left inserted bar and the tensile sealing that keeps of third right inserted bar drive sealing film cover, make the fixed firm fixed of inflation fixation cover on the backbone, thereby pedicle screw also installs more firmly, avoid taking place pedicle screw and become flexible, the not firm condition of fixation appears, first time put the nail position poor after putting the nail, only need rotatory pedicle screw withdraw can, make the adjustment dismantlement more convenient, when needing to beat bone cement, bone cement is kept apart by inflation fixation cover and head film cover, bone cement just with inflation fixation cover and head film cover contact, bone cement will not with pedicle direct contact, realize the first inflation piece on the inflation fixation cover, second inflation piece and third expansion fixation cover keep firmly fixed on the pedicle screw, pedicle screw can be more firmly connected through two the pedicle screw that need be connected to the pedicle screw, pedicle screw can be more conveniently connected to pedicle screw has been avoided, pedicle screw has been changed to two the pedicle screw has been changed, pedicle screw connection screw has been more convenient, pedicle screw has been changed, pedicle screw connection has been more can be had the pedicle screw has been changed.
Further, the depth of the first expansion sheet membrane rod left jack, the first expansion sheet membrane rod right jack, the second expansion sheet membrane rod left jack, the second expansion sheet membrane rod right jack, the third expansion sheet membrane rod left jack and the third expansion sheet membrane rod right jack are the same, the depth of the first expansion sheet membrane sleeve slot, the second expansion sheet membrane sleeve slot and the third expansion sheet membrane sleeve slot are the same, the depth of the first expansion sheet membrane rod left jack, the first expansion sheet membrane rod right jack, the second expansion sheet membrane rod left jack, the second expansion sheet membrane rod right jack, the third expansion sheet membrane rod left jack and the third expansion sheet membrane rod right jack are all larger than the depth of the first expansion sheet membrane sleeve slot, the second expansion sheet membrane sleeve slot and the third expansion sheet membrane sleeve slot, the depth of the first expansion sheet membrane sleeve slot, the second expansion sheet membrane sleeve slot and the third expansion sheet membrane sleeve slot respectively occupy less than half of the length of the first expansion sheet, the second expansion sheet membrane sleeve slot and the third expansion sheet membrane sleeve slot, the depth is reduced by the fixed structure, the head sealing sleeve is further reduced, the head sealing effect is reduced, and the head sealing effect is further reduced.
Further, the expansion fixing sleeve is provided with a first bone cement injection channel, a second bone cement injection channel and a third bone cement injection channel, the first bone cement injection channel comprises a first bone cement injection channel inlet and a first bone cement injection channel outlet, the second bone cement injection channel comprises a second bone cement injection channel inlet and a second bone cement injection channel outlet, the third bone cement injection channel comprises a third bone cement injection channel inlet and a third bone cement injection channel outlet, the first bone cement injection channel, the second bone cement injection channel and the third bone cement injection channel respectively correspond to the positions of the first expansion sheet, the second expansion sheet and the third expansion sheet, the first bone cement injection channel inlet, the second bone cement injection channel inlet and the third bone cement injection channel inlet are arranged on the rear end face of the expansion fixing sleeve, the first bone cement injection channel outlet is arranged on the outer side surface of the first expansion sheet and is positioned at the rear half part of the first expansion sheet, the second bone cement injection channel outlet is arranged on the outer side surface of the second expansion sheet and is positioned at the rear half part of the second expansion sheet, the third bone cement injection channel outlet is arranged on the outer side surface of the third expansion sheet and is positioned at the rear half part of the third expansion sheet, and because the bone cement hardens relatively quickly, if bone cement is driven into the spine first, the expansion fixing sleeve is installed, the effect of bonding the expansion fixing sleeve and the bone cement is poor, so that the expansion fixing sleeve is installed first, then bone cement is injected through the first bone cement injection channel, the second bone cement injection channel and the third bone cement injection channel, so that the bonding between the expansion fixing sleeve and the bone cement is firmer, and the first bone cement injection channel of the structure, the second bone cement injection channel and the third bone cement injection channel are distributed uniformly, injected bone cement is adhered to the head of the expansion fixing sleeve more uniformly, so that the expansion fixing sleeve is adhered to the bone cement more firmly, the first bone cement injection channel outlet is arranged on the outer side surface of the first expansion sheet and positioned on the rear half part of the first expansion sheet, the second bone cement injection channel outlet is arranged on the outer side surface of the second expansion sheet and positioned on the rear half part of the second expansion sheet, and the third bone cement injection channel outlet is arranged on the outer side surface of the third expansion sheet and positioned on the rear half part of the third expansion sheet, thereby avoiding bone cement from entering the expansion fixing sleeve, avoiding contact between the bone cement and pedicle screw and avoiding the pedicle screw from being taken out by adjustment.
Further, the bone cement injection expansion fixing sleeve withdrawing device comprises a syringe and a piston, the syringe is matched with the piston, a circular positioning column is arranged at the middle position of the bottom of the syringe, a first syringe, a second syringe and a third syringe are arranged on the periphery of the circular positioning column at the bottom of the syringe, a plurality of positioning rods are arranged on the periphery of the bottom of the syringe, a first withdrawing fixing seat is arranged on the bottom of the syringe between the first syringe and the second syringe, a second withdrawing fixing seat is arranged on the bottom of the syringe between the second syringe and the third syringe, a third withdrawing fixing seat is arranged on the bottom of the syringe between the third syringe and the first syringe, a first draw hook is arranged on the first withdrawing fixing seat, a second draw hook is arranged on the second withdrawing fixing seat, the third withdrawing fixing seat is provided with a third drag hook, the side wall of the injection cylinder is provided with a first hanging hole, a second hanging hole and a third hanging hole, the first drag hook can bend to hang the hook head on the first hanging hole, the second drag hook can bend to hang the hook head on the second hanging hole, the third drag hook can bend to hang the hook head on the third hanging hole, the rear end face of the expansion fixing sleeve is provided with a first injection tube head placing hole, a second injection tube head placing hole and a third injection tube head placing hole, the rear end face periphery of the expansion fixing sleeve is provided with a plurality of positioning jacks, the circular positioning column can be inserted into the threaded holes, the positioning rod can be inserted into the positioning jacks, the first injection tube, the second injection tube and the third injection tube can be respectively inserted into the first bone cement injection channel inlet, the second bone cement injection channel inlet and the third bone cement injection channel inlet, the first injection tube, the second injection tube and the third injection tube can be respectively inserted into the first injection tube head placing hole, the second injection tube head placing hole and the third injection tube head placing hole, the first drag hook, the second drag hook and the third drag hook can be respectively inserted into the first bone cement injection channel, the second bone cement injection channel and the third bone cement injection channel, and the hook heads of the first drag hook, the second drag hook and the third drag hook can respectively extend from the first bone cement injection channel outlet, the second bone cement injection channel outlet and the third bone cement injection channel outlet to hook, the bone cement injection expansion fixing sleeve withdrawing device with the structure is arranged, so that the bone cement injection is more convenient, the bone cement injection is realized by only one injection, namely the bone cement injection into the first bone cement injection channel, the second bone cement injection channel and the third bone cement injection channel, three injections are avoided, if the embedded expansion fixing sleeve is not suitable to be taken out, the expansion fixing sleeve is taken out only by inserting the first, second and third hooks into the first, second and third bone cement injection passage inlets respectively, then the hook heads of the first, second and third hooks extend out from the first, second and third bone cement injection passage outlets respectively to hook the expansion fixing sleeve, so that the expansion fixing sleeve is more convenient to detach, wherein when bone cement is injected, the hook head of the first hook is hung on the first hanging hole, the hook head of the second hook is hung on the second hanging hole, the hook head of the third hook is hung on the third hanging hole, thus, the operation of preventing bone cement injection is avoided, the circular positioning column is inserted into the threaded hole, the positioning rod is inserted into the positioning jack, the injection device has the advantages that the stability is better when bone cement is injected, shaking is avoided, when the expansion fixing sleeve is taken, the bone water 1959 mud injection expansion fixing sleeve is rotated to a position where the expansion fixing sleeve retreats, the first injection tube, the second injection tube and the third injection tube are respectively inserted into the first injection tube head placing hole, the second injection tube head placing hole and the third injection tube head placing hole, and the positioning rod is inserted into the other positioning insertion hole, so that the expansion fixing sleeve retreating operation can be prevented from being hindered.
Further, all be equipped with a plurality of locking pothooks on first expansion piece, second expansion piece and the third expansion piece, the front end lateral surface of first expansion piece, second expansion piece and third expansion piece all slope setting, and wherein set up locking pothook and make the fixed cover of inflation install more firm, and slope setting makes the fixed cover of inflation install more easily.
The present invention provides an internal fixation device for spinal reinforcing pedicle screws as further described below with reference to the drawings and detailed description.
Drawings
FIG. 1 is a schematic view of the construction of a pedicle screw, expansion fixation sleeve, and cephalad membrane sleeve for use in a spinal reinforcement pedicle screw internal fixation device, in accordance with the present invention;
FIG. 2 is a schematic view of a pedicle screw configuration for use in a spinal reinforcement pedicle screw internal fixation device, in accordance with the present invention;
FIG. 3 is a schematic illustration of one of the structures of an expansion-fixation sheath for a spinal-enhanced pedicle screw internal fixation device provided by the present invention;
FIG. 4 is a second schematic illustration of an expansion fixation sheath for a spinal pedicle screw internal fixation device in accordance with the present invention;
FIG. 5 is a schematic illustration of one of the configurations of a head membrane sleeve for a spinal reinforcing pedicle screw internal fixation device provided by the present invention;
FIG. 6 is a second schematic illustration of a head membrane sleeve for a spinal reinforcing pedicle screw internal fixation device, in accordance with the present invention;
FIG. 7 is a schematic illustration of the configuration of the expansion retaining sleeve withdrawal device mated with the expansion retaining sleeve for a bone cement injection of a spinal pedicle screw internal fixation device according to the present invention;
FIG. 8 is a second schematic illustration of the configuration of the exit device of the expansion fixation sheath for injection of bone cement for use in the internal fixation device of a spinal column-reinforced pedicle screw in accordance with the present invention in combination with the expansion fixation sheath;
FIG. 9 is a schematic illustration of one of the configurations of a bone cement injection expansion anchor sheath ejection device for use with a spinal pedicle screw internal fixation device provided by the present invention;
FIG. 10 is a second schematic illustration of a bone cement injection expansion anchor sheath withdrawal device for use with the internal fixation device of a spinal column reinforcing pedicle screw in accordance with the present invention;
fig. 11 is a third schematic view of a bone cement injection expansion fixation sleeve withdrawal device for use in a spinal pedicle screw internal fixation device, in accordance with the present invention.
Detailed Description
As shown in fig. 1 to 11, the embodiment of the internal fixation device for the spine reinforcement pedicle screw provided by the invention comprises a pedicle screw 1, and comprises an expansion fixation sleeve 2 and a head membrane sleeve 3, wherein the head membrane sleeve 3 is used for sealing the head of the expansion fixation sleeve 2, the pedicle screw 1 comprises a pedicle screw fixation thread section 4 and a pedicle screw fixation seat 5, the pedicle screw fixation seat 5 is provided with a pedicle screw fixation seat threaded hole 6 and a pedicle screw fixation seat connection slot 7, the pedicle screw fixation seat threaded hole 6 is provided with a countersunk fixation nut 8, the expansion fixation sleeve 2 is provided with a threaded hole 9, the pedicle screw fixation thread section 4 is matched with the threaded hole 9, the expansion fixation sleeve 2 comprises an expansion fixation sleeve body 10, a first expansion piece 11, a second expansion piece 12 and a third expansion piece 13 which are arranged at the head of the expansion fixation sleeve body 10, the first expansion piece 11, the second expansion piece 12 and the third expansion piece 13 can be outwards spread and matched, the first expansion piece 11 is provided with a first expansion membrane 14, the second expansion rod jack piece 16, the third expansion rod jack piece 25 is arranged at the left expansion sleeve and the right expansion sleeve 2, the third expansion sleeve membrane 16 is provided with a third expansion rod jack 21, the third expansion rod jack 25 is arranged at the left expansion sleeve 3 and the right expansion sleeve 3, the third expansion sleeve membrane 25, the left expansion sleeve membrane 25 is provided with a third expansion rod jack membrane 25, and the third expansion sleeve membrane 25 is provided with a third expansion rod jack membrane 25, and a third expansion sleeve 25 is arranged at the jack hole 3, and a left expansion rod jack membrane 25 and a jack hole 25, and a third expansion rod plug hole 25 is provided at the jack hole 3 and a jack 3 and a plug hole 3, and a 3 and a plug 3, and a plug 3 plug is provided. The first left inserting rod 24 is inserted into the first left inserting hole 14 of the first expansion sheet membrane rod, the first right inserting rod 25 is inserted into the right inserting hole 16 of the first expansion sheet membrane rod, the second left inserting rod 26 is inserted into the left inserting hole 17 of the second expansion sheet membrane rod, the second right inserting rod 27 is inserted into the right inserting hole 19 of the second expansion sheet membrane rod, the third left inserting rod 28 is inserted into the left inserting hole 20 of the third expansion sheet membrane rod, the third right inserting rod 29 is inserted into the right inserting hole 22 of the third expansion sheet membrane rod, the sealing membrane sleeve 23 is inserted into the first expansion sheet membrane sleeve inserting hole 15, the second expansion sheet membrane sleeve inserting hole 18 and the third expansion sheet membrane sleeve inserting hole 21, so that a gap between the first expansion sheet 11 and the second expansion sheet 12, a gap between the second expansion sheet 12 and the third expansion sheet 13, a gap between the third expansion sheet 13 and the first expansion sheet 11, a gap between the first expansion sheet 11, the second expansion sheet 12 and the third expansion sheet 13 are completely stretched to enable the first expansion sheet 11, the second expansion sheet 12 and the third expansion sheet membrane sleeve inserting rod to enter the screw hole 24, and the third expansion sheet inserting rod 23 and the third expansion sheet inserting rod to be completely stretched, and the third inserting rod is inserted into the left inserting rod and the third inserting rod is completely stretched, and the third inserting rod is inserted into the left inserting rod and the second inserting rod and the third inserting rod is stretched to be a screw hole and the left inserting rod and the second inserting rod and the second inserting rod is stretched.
The depths of the first expansion sheet membrane rod left jack 14, the first expansion sheet membrane rod right jack 16, the second expansion sheet membrane rod left jack 17, the second expansion sheet membrane rod right jack 19, the third expansion sheet membrane rod left jack 20 and the third expansion sheet membrane rod right jack 22 are the same, the depths of the first expansion sheet membrane sleeve slot 15, the second expansion sheet membrane sleeve slot 18 and the third expansion sheet membrane sleeve slot 21 are the same, and the depths of the first expansion sheet membrane rod left jack 14, the first expansion sheet membrane rod right jack 16, the second expansion sheet membrane rod left jack 17, the second expansion sheet membrane rod right jack 19, the third expansion sheet membrane rod left jack 20 and the third expansion sheet membrane rod right jack 22 are larger than the depths of the first expansion sheet membrane sleeve slot 15, the second expansion sheet membrane sleeve slot 18 and the third expansion sheet membrane sleeve slot 21, and the depths of the first expansion sheet membrane sleeve slot 15, the second expansion sheet membrane sleeve slot 18 and the third expansion sheet membrane sleeve slot 21 respectively occupy half of the depths of the first expansion sheet membrane 11, the second expansion sheet membrane sleeve slot 18 and the third expansion sheet membrane sleeve slot 21.
The expansion fixation sleeve 2 is provided with a first bone cement injection channel 30, a second bone cement injection channel 31 and a third bone cement injection channel 32, the first bone cement injection channel 30 comprises a first bone cement injection channel inlet 33 and a first bone cement injection channel outlet 34, the second bone cement injection channel 31 comprises a second bone cement injection channel inlet 35 and a second bone cement injection channel outlet 36, the third bone cement injection channel 32 comprises a third bone cement injection channel inlet 37 and a third bone cement injection channel outlet 38, the first bone cement injection channel 30, the second bone cement injection channel 31 and the third bone cement injection channel 32 correspond to the first expansion piece 11, the second expansion piece 12 and the third expansion piece 13, respectively, the first bone cement injection channel inlet 33, the second bone cement injection channel inlet 35 and the third bone cement injection channel inlet 37 are arranged on the rear end face of the expansion fixation sleeve 2, the first bone cement injection channel outlet 34 is arranged on the outer side of the first expansion piece 11, and the second expansion piece 12 and the third expansion piece 13 are arranged on the rear half of the second expansion piece 12 and the third expansion piece 13.
Comprises a bone cement injection expansion fixing sleeve withdrawing device 39, the bone cement injection expansion fixing sleeve withdrawing device 39 comprises an injection cylinder 40 and a piston 41, the injection cylinder 40 is matched with the piston 41, a circular positioning column 42 is arranged at the middle position of the bottom of the injection cylinder 40, a first injection tube 43, a second injection tube 44 and a third injection tube 45 are arranged on the periphery of the circular positioning column 42 at the bottom of the injection cylinder 40, a plurality of positioning rods 46 are arranged on the periphery of the bottom of the injection cylinder 40, a first withdrawing fixed seat 47 is arranged on the bottom of the injection cylinder 40 between the first injection tube 43 and the second injection tube 44, a second withdrawing fixed seat 48 is arranged on the bottom of the injection cylinder 40 between the second injection tube 44 and the third injection tube 45, a third withdrawing fixed seat 49 is arranged on the bottom of the injection cylinder 40 between the third injection tube 45 and the first injection tube 43, a first draw hook 50 is arranged on the first withdrawing fixed seat 47, the second withdrawing fixing seat 48 is provided with a second draw hook 51, the third withdrawing fixing seat 49 is provided with a third draw hook 52, the side wall of the injection tube 40 is provided with a first hanging hole 53, a second hanging hole 54 and a third hanging hole 55, the first draw hook 50 can bend to hang the hook head on the first hanging hole 53, the second draw hook 51 can bend to hang the hook head on the second hanging hole 54, the third draw hook 52 can bend to hang the hook head on the third hanging hole 55, the rear end face of the expansion fixing sleeve 2 is provided with a first injection tube head placing hole 56, a second injection tube head placing hole 57 and a third injection tube head placing hole 58, the rear end face periphery of the expansion fixing sleeve 2 is provided with a plurality of positioning jacks 59, the circular positioning column 42 can be inserted into the threaded hole 9, the positioning rod 46 can be inserted into the positioning jacks 59, the first injection tube 43, the second injection tube head placing hole 58 and the circular positioning column 42 can be inserted into the threaded hole 9, the second syringe 44 and the third syringe 45 may be inserted into the first bone cement injection passage inlet 33, the second bone cement injection passage inlet 35, and the third bone cement injection passage inlet 37, respectively, the first syringe 43, the second syringe 44, and the third syringe 45 may be inserted into the first syringe head placement hole 56, the second syringe head placement hole 57, and the third syringe head placement hole 58, respectively, the first drag hook 50, the second drag hook 51, and the third drag hook 52 may be inserted into the first bone cement injection passage 30, the second bone cement injection passage 31, and the third bone cement injection passage 32, respectively, and the hook heads of the first drag hook 50, the second drag hook 51, and the third drag hook 52 may protrude from the first bone cement injection passage outlet 34, the second bone cement injection passage outlet 36, and the third bone cement injection passage outlet 38, respectively.
The first expansion piece 11, the second expansion piece 12 and the third expansion piece 13 are respectively provided with a plurality of locking hooks 60, and the outer side surfaces of the front ends of the first expansion piece 11, the second expansion piece 12 and the third expansion piece 13 are respectively arranged in a slope manner.
As required, detailed embodiments of the present invention are disclosed herein, but it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily drawn to scale. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (2)
1. An internal fixation device for spinal reinforcement pedicle screws, comprising a pedicle screw (1), characterized in that: including inflation fixed cover (2) and head membrane cover (3), head membrane cover (3) are used for sealed inflation fixed cover (2) head, arch root screw (1) are including pedicle screw fixed screw thread section (4) and pedicle screw fixing base (5), be equipped with pedicle screw fixing base screw hole (6) and pedicle screw fixing base connection slotted hole (7) on pedicle screw fixing base (5), be equipped with countersunk head fixation nut (8) on pedicle screw fixing base screw hole (6), be equipped with screw hole (9) on inflation fixed cover (2), pedicle screw fixed screw thread section (4) cooperate with screw hole (9), inflation fixed cover (2) are including inflation fixed cover pipe body (10) and the first inflation piece (11), second inflation piece (12) and third inflation piece (13) of setting at inflation fixed cover pipe body (10) head, first inflation piece (11), second inflation piece (12) and third inflation piece (13) three can outwards strut and cooperate, be equipped with inflation piece (11) first inflation piece (16) and inflation piece (16) inflation piece, inflation piece (16) are equipped with inflation piece (15) inflation membrane on the inflation piece The second expansion piece membrane sleeve slot (18) and the second expansion piece membrane rod right inserting hole (19), the third expansion piece (13) is provided with a third expansion piece membrane rod left inserting hole (20), a third expansion piece membrane sleeve slot (21) and a third expansion piece membrane rod right inserting hole (22), the head membrane sleeve (3) comprises a sealing membrane sleeve (23) and a first left inserting rod (24), a first right inserting rod (25), a second left inserting rod (26), a second right inserting rod (27), a third left inserting rod (28) and a third right inserting rod (29) which are arranged on the side part of the sealing membrane sleeve (23), wherein the first left inserting rod (24) is inserted into the first expansion piece membrane rod left inserting hole (14), the first right inserting rod (25) is inserted into the first expansion piece membrane rod right inserting hole (16), the second left inserting rod (26) is inserted into the second expansion piece membrane rod left inserting hole (17), the second right inserting rod (27) is arranged into the third expansion piece membrane rod (19), the third inserting rod (29) is inserted into the third expansion piece membrane rod left inserting hole (16), the second left inserting rod (27) is inserted into the third expansion piece membrane rod (15), so that a gap between the first expansion sheet (11) and the second expansion sheet (12), a gap between the second expansion sheet (12) and the third expansion sheet (13), a gap between the third expansion sheet (13) and the first expansion sheet (11), through holes between the first expansion sheet (11), the second expansion sheet (12) and the third expansion sheet (13) are sealed, and when the pedicle screw fixing thread section (4) completely enters the threaded hole (9) to outwards open the first expansion sheet (11), the second expansion sheet (12) and the third expansion sheet (13), the first left inserting rod (24), the first right inserting rod (25), the second left inserting rod (26), the second right inserting rod (27), the third left inserting rod (28) and the third right inserting rod (29) drive the sealing film sleeve (23) to stretch and keep sealing; the depths of the first expansion sheet membrane rod left inserting hole (14), the first expansion sheet membrane rod right inserting hole (16), the second expansion sheet membrane rod left inserting hole (17), the second expansion sheet membrane rod right inserting hole (19), the third expansion sheet membrane rod left inserting hole (20) and the third expansion sheet membrane rod right inserting hole (22) are the same, the depths of the first expansion sheet membrane sleeve inserting hole (15), the second expansion sheet membrane sleeve inserting hole (18) and the third expansion sheet membrane sleeve inserting hole (21) are the same, and the depths of the first expansion sheet membrane rod left inserting hole (14), the first expansion sheet membrane rod right inserting hole (16), the second expansion sheet membrane rod left inserting hole (17), the second expansion sheet membrane rod right inserting hole (19), the third expansion sheet membrane rod left inserting hole (20) and the third expansion sheet membrane rod right inserting hole (22) are all larger than the depths of the first expansion sheet membrane sleeve inserting hole (15), the second expansion sheet membrane sleeve inserting hole (18) and the third expansion sheet membrane sleeve inserting hole (21), and the depths of the first expansion sheet membrane sleeve inserting hole (15), the second expansion sheet membrane sleeve inserting hole (18) and the third expansion sheet inserting hole (12) are half the lengths of the first expansion sheet inserting hole (12); the expansion fixing sleeve (2) is provided with a first bone cement injection channel (30), a second bone cement injection channel (31) and a third bone cement injection channel (32), the first bone cement injection channel (30) comprises a first bone cement injection channel inlet (33) and a first bone cement injection channel outlet (34), the second bone cement injection channel (31) comprises a second bone cement injection channel inlet (35) and a second bone cement injection channel outlet (36), the third bone cement injection channel (32) comprises a third bone cement injection channel inlet (37) and a third bone cement injection channel outlet (38), the first bone cement injection channel (30), the second bone cement injection channel (31) and the third bone cement injection channel (32) respectively correspond to the positions of the first expansion sheet (11), the second expansion sheet (12) and the third expansion sheet (13), the first bone cement injection channel inlet (33), the second bone cement injection channel inlet (35) and the third bone cement injection channel inlet (37) are arranged on the fixing sleeve (2) at the rear end face of the expansion sheet (11) and at the outer side face of the expansion sheet (11), the second bone cement injection channel outlet (36) is arranged on the outer side surface of the second expansion sheet (12) and is positioned at the rear half part of the second expansion sheet (12), and the third bone cement injection channel outlet (38) is arranged on the outer side surface of the third expansion sheet (13) and is positioned at the rear half part of the third expansion sheet (13); including fixed cover withdrawal device of bone cement injection expansion (39), fixed cover withdrawal device of bone cement injection expansion (39) include syringe (40) and piston (41), syringe (40) and piston (41) cooperate, the bottom middle part position of syringe (40) is equipped with circular reference column (42), be equipped with first syringe (43), second syringe (44) and third syringe (45) on the periphery of circular reference column (42) of syringe (40) bottom, be equipped with a plurality of locating levers (46) on syringe (40) bottom periphery, be equipped with first withdrawal fixing seat (47) on syringe (40) bottom between first syringe (43) and second syringe (44), be equipped with second withdrawal fixing seat (48) on syringe (40) bottom between second syringe (44) and third syringe (45), be equipped with third withdrawal fixing seat (49) on syringe (40) bottom between third syringe (45) and first syringe (43), be equipped with draw hook (49) on second (47) draw hook (50) on the second fixing seat (48), the injection syringe comprises an injection syringe, and is characterized in that a first hanging hole (53), a second hanging hole (54) and a third hanging hole (55) are formed in the side wall of the injection syringe (40), the first draw hook (50) can bend to hang a hook head on the first hanging hole (53), the second draw hook (51) can bend to hang a hook head on the second hanging hole (54), the third draw hook (52) can bend to hang a hook head on the third hanging hole (55), a first injection syringe head placing hole (56), a second injection syringe head placing hole (57) and a third injection syringe head placing hole (58) are formed in the rear end face of the expansion fixing sleeve (2), a plurality of positioning jacks (59) are formed in the periphery of the rear end face of the expansion fixing sleeve (2), the circular positioning column (42) can be inserted into the threaded hole (9), the positioning rod (46) can be inserted into the positioning jacks (59), and the first injection syringe (43), the second injection syringe (44) and the third injection syringe (45) can be inserted into a first bone cement inlet (33), a second injection syringe head (44) and a third injection syringe head (45) can be inserted into a first bone cement inlet (33), a second cement inlet (33) and a third injection syringe head (37) respectively The second injection tube head placing hole (57) and the third injection tube head placing hole (58), the first drag hook (50), the second drag hook (51) and the third drag hook (52) can be respectively inserted into the first bone cement injection channel (30), the second bone cement injection channel (31) and the third bone cement injection channel (32), and the hook heads of the first drag hook (50), the second drag hook (51) and the third drag hook (52) can respectively extend from the first bone cement injection channel outlet (34), the second bone cement injection channel outlet (36) and the third bone cement injection channel outlet (38) to be hooked.
2. An internal fixation device for a spinal reinforcing pedicle screw as recited in claim 1, wherein: the novel expansion device is characterized in that a plurality of locking hooks (60) are arranged on the first expansion piece (11), the second expansion piece (12) and the third expansion piece (13), and the outer side faces of the front ends of the first expansion piece (11), the second expansion piece (12) and the third expansion piece (13) are arranged in a slope mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370586.4A CN107115140B (en) | 2017-05-23 | 2017-05-23 | Internal fixing device for spinal column reinforced pedicle screw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370586.4A CN107115140B (en) | 2017-05-23 | 2017-05-23 | Internal fixing device for spinal column reinforced pedicle screw |
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| CN107115140A CN107115140A (en) | 2017-09-01 |
| CN107115140B true CN107115140B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710370586.4A Active CN107115140B (en) | 2017-05-23 | 2017-05-23 | Internal fixing device for spinal column reinforced pedicle screw |
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| CN (1) | CN107115140B (en) |
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| US8211110B1 (en) * | 2006-11-10 | 2012-07-03 | Lanx, Inc. | Minimally invasive tool to facilitate implanting a pedicle screw and housing |
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| DE3835853A1 (en) * | 1988-10-21 | 1990-04-26 | Gmt Medizinische Technik Gmbh | Device for performing surgical interventions |
| WO2001010356A2 (en) * | 1999-08-10 | 2001-02-15 | Novarticulate Holdings Limited | Method and apparatus for delivering cement to bones and/or positioning components |
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| CN107115140A (en) | 2017-09-01 |
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