CN108325072A - A kind of medical instrument fixing device - Google Patents
A kind of medical instrument fixing device Download PDFInfo
- Publication number
- CN108325072A CN108325072A CN201810361297.2A CN201810361297A CN108325072A CN 108325072 A CN108325072 A CN 108325072A CN 201810361297 A CN201810361297 A CN 201810361297A CN 108325072 A CN108325072 A CN 108325072A
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- Prior art keywords
- lock
- medical instrument
- bone hole
- fixed
- fixing device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 72
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 52
- 210000003625 skull Anatomy 0.000 claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 230000002265 prevention Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 210000004556 brain Anatomy 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003902 lesion Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0526—Head electrodes
- A61N1/0529—Electrodes for brain stimulation
- A61N1/0534—Electrodes for deep brain stimulation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0526—Head electrodes
- A61N1/0529—Electrodes for brain stimulation
- A61N1/0539—Anchoring of brain electrode systems, e.g. within burr hole
Landscapes
- Health & Medical Sciences (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Psychology (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a kind of medical instrument fixing devices, including：To be placed on the bone hole pedestal in the bone hole of skull；Bone hole pedestal is equipped with through its axial through-hole；It can be relative to the fixed lock washer of bone hole position base；Lock washer includes integrally formed washer matrix, and washer matrix has fixed arm and lock arm, and two lock arms keep pretightning force by elastic portion, the medical instrument being placed in skull is clamped；Two fixed arms are located at the outside of corresponding lock arm, to be installed on the inside of through-hole.Above-mentioned medical instrument fixing device, the clamping to medical instruments such as electrodes is realized using two lock arms of lock washer, and lock washer is fixed on bone hole pedestal, bone hole pedestal can be fixed on skull, thus it conveniently realizes and the medical instruments such as electrode is fixed, the success rate that link improves lesions located in deep brain operation is fixed in electrode, improves surgical effect.
Description
Technical field
The present invention relates to Implanted medical system technical field, more particularly to a kind of medical instrument fixing device.
Background technology
Lesions located in deep brain system belongs to implantable nerve stimulating system one kind, and main includes the pulse generation to implant
Device, electrode and external control device.Electrode is connected with impulse generator, and the pulse that impulse generator generates is passed to
Specific nerve position generates electro photoluminescence, to restore the normal function of human body of corresponding site.Patient performed the operation in implant electrode
Cheng Zhong, doctor determines the target position of patient's brain by 3 D stereo positioning device first, according to target position suitable
Bone hole is outputed at skull position, and electrode wires are inserted into corresponding target position by bone hole tests, the ideal situation of effect
Under electrode will be fixed on this position with electrode fixing device.With lesions located in deep brain System Development, to planting in operation
The positioning accuracy request for entering brain electrode is higher and higher, and better position precision can improve surgical effect and aftertreatment effect
Stability.
In the lesions located in deep brain electrode implant surgery of early stage, the easy fixing device of generally use fixes electrode, with one
Electrode wires are extruded in the slot of base side wall by the bone hole lid of a silica gel, are played the role of fixed；Or titanium is used above bone hole
The fixed a piece of titanium plate of nail, electrode is bundled in sutures in titanium plate.Although these common practices can play fixed electrode
Effect, but the displacement laterally or vertically that electrode can be caused larger in fixation procedure influences surgical effect, or performing the operation
Electrode still has the space moved in skull in a period of time afterwards, and postoperative effect over time is caused to be deteriorated.
Invention content
For above-mentioned technical problem in the prior art, the object of the present invention is to provide a kind of medical instrument fixing device,
It may be implemented to be accurately positioned.
To achieve the above object, the present invention provides a kind of medical instrument fixing device, including：
To be placed on the bone hole pedestal in the bone hole of skull；The bone hole pedestal is equipped with through its axial through-hole；
It can be relative to the fixed lock washer of bone hole position base；The lock washer includes integrally formed pad
Cycle basis body, the washer matrix have fixed arm and lock arm, and two lock arms keep pretightning force by elastic portion, to press from both sides
Hold the medical instrument being placed in skull；Two fixed arms are located at the outside of corresponding lock arm, use
To be installed on the inside of the through-hole.
Preferably, the lock washer is placed on adjustable angle on the inside of the through-hole.
Preferably, the inside of the through-hole is equipped with along its first circumferentially distributed rotation prevention portion, and the lock washer is equipped with energy
Enough the second rotation prevention portions with first rotation prevention portion cooperation revolve to limit the lock washer relative to the bone hole pedestal
Turn.
Preferably, the boss radially extended is additionally provided on the inside of the through-hole, the border of the lock washer is equipped with
The step surface that can coordinate with the boss, to realize the lock washer relative to the bone hole pedestal axial restraint.
Preferably, two lock arms edge close to each other forms the card slot radially extended along the lock washer,
The card slot is being clamped medical instrument；And two the front end at the edge formed guiding medical instrument to the card slot
Guiding groove.
Preferably, the outer surface of the bone hole pedestal is equipped with fixing groove, to realize the doctor after lock arm clamping
It treats instrument and is fixed on the fixing groove；Further include being removably attachable to the bone hole lid of the bone hole pedestal, and the bone hole lid
Outer rim be equipped with for medical instrument by locking step.
Preferably, the root of two lock arms has the deformation hole for penetrating through and being connected to the card slot in an axial direction, with reality
The relative motion of existing two lock arms；The elastic portion specially connects the spring of two lock arms, and two lockings
The outer rim of arm is equipped with to install the inlay card portion of the spring, and the spring is located at the outside of the card slot and the deformation hole.
Preferably, the inner edge of two fixed arms is respectively relative to have between the outer rim of corresponding lock arm
There is gap, and the root of two fixed arms and two lock arms is connected.
Preferably,
The spring takes the shape of the letter U, including two adjutages, the receipts that extend at the top of two adjutages and towards relative direction
Tight portion and the connection bottom being connected positioned at the two adjutage bottoms and by two adjutages；The connection bottom, which has, receives
Clamp force, to realize that two adjutages and the two tightening portions keep pretightning force；
The inlay card portion includes：
It is respectively arranged on the outside of two lock arms, accommodating the pockets of two adjutages respectively；
It is connected to two pockets, to the buckle of the fixation connection bottom；
Set on any pockets, limiting the positive stop end of each tightening portion displacement respectively；Any institute
It includes circumferential end faces and radial end face to state positive stop end, to limit the circumferentially displaced and radial position in each tightening portion respectively
It moves.
Preferably, the root of two fixed arms and two lock arms is equipped with axially extending bore, with to avoid the pad
Cycle basis body stress is concentrated；And the axially extending bore is located at the side of the deformation hole far from the card slot.
Relative to above-mentioned background technology, medical instrument fixing device provided by the invention utilizes two locks of lock washer
Fixed arm realizes the clamping to medical instruments such as electrodes, and two lock arms keep pretightning force by elastic portion, can continue to keep
Two lock arms are in clamped condition；And lock washer is fixed on bone hole pedestal, bone hole pedestal can be fixed on skull, thus
It conveniently realizes and the medical instruments such as electrode is fixed, the success that link improves lesions located in deep brain operation is fixed in electrode
Rate improves surgical effect.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the schematic diagram using the lesions located in deep brain system of medical instrument fixing device；
Fig. 2 is the explosive view of medical instrument fixing device in Fig. 1；
Fig. 3 is the structural schematic diagram of bone hole pedestal in Fig. 2；
Fig. 4 is the structural schematic diagram of lock washer in Fig. 2；
Fig. 5 is the schematic diagram of another angle of lock washer in Fig. 4；
Fig. 6 is the bottom view of lock washer in Fig. 4；
Fig. 7 is the structural schematic diagram of the spring of lock washer in Fig. 6；
Fig. 8 is the sectional view that medical instrument fixing device is fixed on skull in Fig. 1；
Fig. 9 is the schematic diagram that medical instrument fixing device fixes electrode in Fig. 1；
Figure 10 is the schematic diagram of the bone hole lid of medical instrument fixing device in Fig. 1.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawings and it is embodied
The present invention is described in further detail for mode.
It is the schematic diagram using the lesions located in deep brain system of medical instrument fixing device to please refer to Fig.1 to Figure 10, Fig. 1；
Fig. 2 is the explosive view of medical instrument fixing device in Fig. 1；Fig. 3 is the structural schematic diagram of bone hole pedestal in Fig. 2；Fig. 4 is in Fig. 2
The structural schematic diagram of lock washer；Fig. 5 is the schematic diagram of another angle of lock washer in Fig. 4；Fig. 6 is lock washer in Fig. 4
Bottom view；Fig. 7 is the structural schematic diagram of the spring of lock washer in Fig. 4；Fig. 8 is that medical instrument fixing device is fixed in Fig. 1
In the sectional view of skull；Fig. 9 is the schematic diagram that medical instrument fixing device fixes electrode in Fig. 1；Figure 10 is medical instrument in Fig. 1
The schematic diagram of the bone hole lid of fixing device.
A kind of medical instrument fixing device 100 provided by the invention includes mainly bone hole pedestal 1 and lock washer 2, utilizes
The medical instruments such as 100 holding electrode 200 of medical instrument fixing device, the equal medical instruments connection of electrode 200 are located at external pulse
Generator 300, as shown in Figure of description 1.Wherein, bone hole pedestal 1 is such as said for being placed in the bone hole 410 of skull 400
Shown in bright book attached drawing 2.Bone hole pedestal 1 is in the form of annular discs, the axial through-hole 11 having through its upper and lower end face, and the two of bone hole pedestal 1
Side is respectively equipped with nail hole 13.
Lock washer 2 can be fixed relative to 1 holding position of bone hole pedestal, structure such as Figure of description 4 to 6 institute of attached drawing
Show, including disc-shaped washer matrix 20, washer matrix 20 is provided with the fixed arm 21 positioned at both sides, between two fixed arms 21
There are two lock arms 22 for tool；20, two fixed arms 21 of washer matrix and two lock arms 22 are wholely set, two lock arms 22
Between have to be clamped the gap 26 of medical instrument, gap 26 is formed by the opposite side of two lock arms 22 along 221, and two
A lock arm 22 keeps pretightning force by elastic portion 23, and the ends of two lock arms 22 has a deformation hole 28, deformation hole 28 and
Gap 26 is connected to, to realize opening and the tightening of two lock arms 22.
Elastic portion 23 is paperwrapped in the outside of two lock arms 22, and elastic portion 23 can be integral the components such as spring, two
The structures such as mounting groove can be arranged in the outside of lock arm 22, realize the fixation to elastic portion 23.Adjacent fixed arm 21 and locking
There is accommodation space 29 between arm 22, to realize opening and the tightening of lock arm 22, be located at two of 20 outside of washer matrix
Fixed arm 21 plays positioning action.
In order to realize fixation of the lock washer 2 relative to bone hole pedestal 1, the first rotation stop can be equipped in the inside of through-hole 11
Portion 111, multiple first rotation prevention portions 111 are along the circumferentially distributed of through-hole 11；The second rotation prevention portion 24, the second rotation stop is arranged in washer matrix 20
Portion 24 is matched with the first rotation prevention portion 111, is rotated with to avoid lock washer 2, as shown in Figure of description 3 and attached drawing 6.
Axial restraint in order to ensure lock washer 2 relative to bone hole pedestal 1, the periphery of lock washer 2 is equipped with can be with
The border of bone hole pedestal 1 matches, to avoid the step surface 25 that lock washer 2 is axially moveable, as shown in Figure of description 4；
The step surface 25 of lock washer 2 is overlapped with the boss 112 of bone hole pedestal 1, and specifically, step surface 25 includes axially extending
The vertical plane of (namely thickness direction) and the horizontal plane radially extended；During the installation process, radially due to horizontal plane
It is protruded relative to vertical plane, it is possible thereby to be overlapped at the boss 112 of bone hole pedestal 1, lock washer 2 is avoided integrally to move in an axial direction
It is dynamic.
There is two lock arms 22 certain gap, the two edge 221 close to each other to form card slot 26, card radially
Slot 26 is radially extended along lock washer 2, such as Figure of description 1 to attached drawing 3；Two edges 221 are located at the medical treatment such as electrode
The both sides of instrument, namely in card slot 26, to realize the clamping to medical instruments such as electrodes.In order to avoid two edges
The medical instruments such as 221 lesion electrodes can avoid two in the front end setting chamfering at two edges 221 to form guiding groove 27
The front end at edge 221 injures medical instrument, while also medical instrument successfully can be introduced into card slot 26.
Elastic portion 23 can be that two lock arms 22 are connected by such as Figure of description 6 and attached spring shown in Fig. 7, spring,
The outer rim of two lock arms 22 is equipped with inlay card portion 222, and spring is fixed in inlay card portion 222, and spring is located at card slot 26 and shape
The outside of variable orifice 28；Namely spring wraps card slot 26 and deformation hole 28 wherein；It follows that the spring moment generates tightening force,
To keep the clamping of two lock arms 22.
In order to ensure two lock arms 22 avoid interfering with fixed arm 21 in clamping or opening, two fixed arms 21 it is interior
Edge is respectively relative to all have gap 29, and two fixed arms 21 and two locks between the outer rim of corresponding lock arm 22
The root of fixed arm 22 is connected；Two fixed arms 21 and two lock arms 22 can be disposed on the same plane, and fixed arm 21 with
There is gap 29, thus clamping or expansion action of two lock arms 22 in the plane will not be with fixed arm between lock arm 22
21 interfere.
More specifically, spring can be arranged and take the shape of the letter U comprising two adjutages, 231, two tightening portions 232 and connection
Bottom 233, as shown in Figure of description 7；The top of each adjutage 231 all has a tightening portion 232, two tightening portions
232 front end towards relative direction extend, be similar to it is hook-shaped, connection bottom 233 both ends be separately connected two tightening portions 232, bullet
Spring is integrated setting, and connection bottom 233 has tightening force so that two adjutages 231 and two tightening portions 232 keep pre-tightening
Power.
The inlay card portion 222 of lock washer 2 includes pockets 2221, buckle 2222 and positive stop end 2223, as specification is attached
Shown in Fig. 4；Two pockets 2221 are located at the outside of lock arm 22, two adjutages for accommodating spring respectively
231；Buckle 2222 is set to the lower section in deformation hole 28, is used for the connection bottom 233 of fixed spring；Two positive stop ends 2223 distinguish position
In the top of each pockets 2221, to limit the displacement in each tightening portion 232.Wherein, positive stop end 2223 includes
Circumferential end faces 22231 and radial end face 22232, circumferential end faces 22231 are limiting the circumferentially displaced of tightening portion 232, longitudinal end
Face 22232 is limiting the radial displacement in tightening portion 232.
The root of two fixed arms 21 and two lock arms 22 is equipped with axially extending bore 201, as shown in Figure of description 5,
Axially extending bore 201 is located at the side of lower section namely deformation hole 28 far from card slot 26 in deformation hole 28, and axially extending bore 201 can be kept away
Exempt from the stress concentration of washer matrix 20, and then improves the service life of lock washer 2.
In order to further increase installation effectiveness of the bone hole pedestal 1 in position fixing process, bone hole pedestal 1 is equipped with the first limiting slot
15, the second limiting slot 16, third limiting slot 17 and the 4th limiting slot 18, multiple limiting slots are circumferentially distributed along through-hole 11, such as say
Shown in bright book attached drawing 3；In position fixing process, the limiting section in positioning tool can insert scarf conjunction with limiting slot 13, to determination
The position of bone hole pedestal 1.
In order to improve the widely applicable property of bone hole pedestal 1, the upper surface of bone hole pedestal 1 is additionally provided with two deformation slots 12, such as
Figure of description 3 and attached drawing 8；Two deformation slots 12 are located at the both sides of through-hole 11, to adjust the bottom surface arc of bone hole pedestal 1
Degree.In use, if the radian of skull 400 is larger, then bone hole pedestal 1 can be fitted on the basis of deforming slot 12
Work as bending, it is ensured that the bottom surface of bone hole pedestal 1 is in certain radian, to fit in the surface of skull 400.When Medical treatment devices such as electrodes 200
It after tool is clamped by two lock arms 22, can be positioned in the guiding groove 10 of bone hole pedestal 1, realize that the position of electrode 200 is fixed,
As shown in Figure of description 9.
Two be in vertical distribution guiding groove 10 namely two guiding grooves can be arranged in the medical instrument fixing device of the present invention
The angle of the line of 10 extended line is 90 °, in this way being capable of its suitable fixed guiding groove 10 of power pole selection；For guiding groove
The setting of the angle of guiding groove 10 and lock arm 22 can be in 90 ° by the angle between 10 and lock arm 22, can also be by the two
Angle is set greater than 45 °, so set, clamping electricity can be consolidated by certainly existing a guiding groove 10 in two guiding grooves 10
Surgical effect is improved, as shown in Figure of description 9 in pole.
Bone hole pedestal 1 is detachably provided with the bone hole lid 3 above lock washer 2, and the outer rim setting of bone hole lid 3
Step is locked, as shown in Figure of description 10, the first locking step 311 is convex compared to first boss 321 and the 6th in the axial direction
Platform 326 is low；Second locking step 312 is low compared to second boss 322 and third boss 323 in the axial direction；Third locks step
313 is low compared to third boss 323 and the 4th boss 324 in the axial direction；4th locking step 314 is in the axial direction compared to the 5th
Boss 325 and the 6th boss 326 are low.
Lock washer 2 is positioned in bone hole pedestal 1, and is cured electrode 200 etc. using two lock arms 22 of lock washer 2
After treating instrument clamping, electrode 200 waits medical instruments to be positioned in the guiding groove 10 of bone hole pedestal 1, realizes that the position of electrode 200 is solid
It is fixed；Then bone hole lid 3 is covered, the locking step of bone hole lid 3 can extend out to medical instrument with medical instruments such as power poles 200 at this time
Except fixing device, and the medical instruments such as electrode 200 are compressed using above-mentioned boss, to complete to fix, such as specification
Attached drawing 8.
To further ensure that the fixation of bone hole lid 3 and bone hole pedestal 1, bone hole lid 3 can be wholely set several buckles
33, as described in Figure of description 10；Buckle 33 includes the elongated end 331 extended radially outward, the outside end of elongated end 331
With the bending part 332 axially extended, the end of bending part 332 has secondary bending, forms transition part 334 and clamping end
End 333, buckle 33 are in zigzag.
For bone hole pedestal 1, there is the first limiting slot 15, the second limiting slot 16, third limiting slot 17 and the 4th to limit
Slot 18, aforementioned four limiting slot can be fixed on to buckle 33 in limiting slot respectively with each buckle 33 phases clamping；Phase
It answers, the shape design of the shape design in limiting slot and buckle 33 is correspondingly arranged, to realize the inlay card of buckle 33 and limiting slot.
During the installation process, buckle 33 generates miniature deformation so that transition part 334 inserts inserting in embedding structure in limiting slot, and leads to
Crossing clamping end 333 avoids buckle 33 from being detached from limiting slot；In disassembly process, it can will stick up the components such as bar and stretch into bone hole pedestal
In 1 dismounting through-hole 14, to stick up bone hole lid 3 from bone hole pedestal 1, realize that bone hole lid 3 is detached from bone hole pedestal 1.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
Medical instrument fixing device provided by the present invention is described in detail above.It is used herein specifically a
Principle and implementation of the present invention are described for example, and the explanation of above example is only intended to help to understand the present invention's
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
Protection domain in.
Claims (10)
1. a kind of medical instrument fixing device, which is characterized in that including：
To be placed on the bone hole pedestal (1) in the bone hole of skull；The bone hole pedestal (1) is equipped with through its axial through-hole
(11)；
It can be relative to the fixed lock washer in bone hole pedestal (1) position (2)；The lock washer (2) include one at
The washer matrix (20) of type, the washer matrix (20) have fixed arm (21) and lock arm (22), two lock arms (22)
Pretightning force is kept by elastic portion (23), the medical instrument being placed in skull is clamped；Two fixed arms (21) point
Not Wei Yu corresponding lock arm (22) outside, to be installed on the inside of the through-hole (11).
2. medical instrument fixing device according to claim 1, which is characterized in that the lock washer (2) is with adjustable
Angle be placed on the inside of the through-hole (11).
3. medical instrument fixing device according to claim 2, which is characterized in that the inside of the through-hole (11) is equipped with edge
Its circumferentially distributed the first rotation prevention portion (111), the lock washer (2), which is equipped with, to be coordinated with first rotation prevention portion (111)
The second rotation prevention portion (24), rotated relative to the bone hole pedestal (1) to limit the lock washer (2).
4. medical instrument fixing device according to claim 3, which is characterized in that be additionally provided on the inside of the through-hole (11)
The boss (112) radially extended, the border of the lock washer (2) are equipped with the platform that can coordinate with the boss (112)
Terrace (25), to realize the lock washer (2) relative to bone hole pedestal (1) axial restraint.
5. the medical instrument fixing device according to Claims 1 to 4 any one, which is characterized in that two lock arms
(22) edge close to each other (221) form the card slot (26) radially extended along the lock washer (2), the card slot (26)
Medical instrument is clamped；And two the front end of the edge (221) formed guiding medical instrument to the card slot (26)
Guiding groove (27).
6. the medical instrument fixing device according to Claims 1 to 4 any one, which is characterized in that the bone hole pedestal
(1) outer surface is equipped with fixing groove (10), with realize the medical instrument after the lock arm (22) clamping is fixed on it is described
Fixing groove (10)；Further include being removably attachable to the bone hole lid (3) of the bone hole pedestal (1), and the bone hole lid (3) is outer
Edge be equipped with for medical instrument by locking step.
7. medical instrument fixing device according to claim 5, which is characterized in that the root of two lock arms (22) has
There is the deformation hole (28) for penetrating through and being connected to the card slot (26) in an axial direction, to realize the opposite fortune of two lock arms (22)
It is dynamic；The elastic portion (23) is specially to connect the spring of two lock arms (22), and the outer rim of two lock arms (22) is set
There is an inlay card portion (222) for installing the spring, the spring is located at the outer of the card slot (26) and the deformation hole (28)
Side.
8. medical instrument fixing device according to claim 7, which is characterized in that the interior fate of two fixed arms (21)
Do not all have gap (29) between the outer rim of corresponding lock arm (22), and two fixed arms (21) with
And two the lock arm (22) root be connected.
9. medical instrument fixing device according to claim 7, which is characterized in that
The spring takes the shape of the letter U, including two adjutages (231), is located at the top of two adjutages (231) and prolongs towards relative direction
The tightening portion (232) stretched and the connection bottom being connected positioned at two adjutage (231) bottoms and by two adjutages (231)
Portion (233)；The connection bottom (233) has tightening force, to realize two adjutages (231) and the two tightening portions
(232) pretightning force is kept；
The inlay card portion (222) includes：
It is respectively arranged on the outside of two lock arms (22), accommodating the pockets of two adjutages (231) respectively
(2221)；
It is connected to two pockets (2221), to the buckle (2222) of fixation connection bottom (233)；
Set on any pockets (2221), limiting the positive stop end of each tightening portion (232) displacement respectively
(2223)；Any positive stop end (2223) includes circumferential end faces (22231) and radial end face (22232), to limit respectively
The circumferentially displaced and radial displacement of each tightening portion (232).
10. medical instrument fixing device according to claim 8, which is characterized in that two fixed arms (21) and two
The root of the lock arm (22) is equipped with axially extending bore (201), with to avoid washer matrix (20) stress concentration；And it is described
Axially extending bore (201) is located at side of the deformation hole (28) far from the card slot (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810361297.2A CN108325072B (en) | 2018-04-20 | 2018-04-20 | Medical instrument fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810361297.2A CN108325072B (en) | 2018-04-20 | 2018-04-20 | Medical instrument fixing device |
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| CN108325072A true CN108325072A (en) | 2018-07-27 |
| CN108325072B CN108325072B (en) | 2024-10-15 |
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Cited By (5)
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| CN109498990A (en) * | 2018-12-20 | 2019-03-22 | 清华大学 | A kind of fixed device of medical instrument |
| CN109621200A (en) * | 2018-12-28 | 2019-04-16 | 清华大学 | A kind of fixed device of medical instrument |
| CN116421888A (en) * | 2023-04-23 | 2023-07-14 | 北京品驰医疗设备有限公司 | Clamping assembly and medical instrument fixing device |
| WO2024001708A1 (en) * | 2022-06-28 | 2024-01-04 | 苏州景昱医疗器械有限公司 | Cranial foramina electrode fixing apparatus |
| WO2024001697A1 (en) * | 2022-06-29 | 2024-01-04 | 苏州景昱医疗器械有限公司 | Cranial hole electrode securing device |
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| CN109498990A (en) * | 2018-12-20 | 2019-03-22 | 清华大学 | A kind of fixed device of medical instrument |
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| CN116421888A (en) * | 2023-04-23 | 2023-07-14 | 北京品驰医疗设备有限公司 | Clamping assembly and medical instrument fixing device |
| CN116421888B (en) * | 2023-04-23 | 2023-12-29 | 北京品驰医疗设备有限公司 | Clamping assembly and medical instrument fixing device |
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| CN108325072B (en) | 2024-10-15 |
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