CN113208798B

CN113208798B - Bone joint correction fixer

Info

Publication number: CN113208798B
Application number: CN202110418405.7A
Authority: CN
Inventors: 曾晖; 雷鸣; 郭丽; 刘佩; 王德利
Original assignee: Peking University Shenzhen Hospital
Current assignee: Peking University Shenzhen Hospital
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2024-06-14
Anticipated expiration: 2041-04-19
Also published as: CN113208798A

Abstract

The invention discloses an osteoarthropathy correcting fixer, which comprises a wrist fixing sleeve, a holding component, a palm fixing sleeve and a first elastic piece, wherein the wrist fixing sleeve is suitable for being fixed on a wrist; the retaining assembly comprises a fixed seat, a stop piece and a retaining arm, wherein the fixed seat is arranged on the wrist fixing sleeve, the stop piece is arranged on the fixed seat, and the retaining arm is positioned below the stop piece and can pivot around a preset axis relative to the fixed seat; the palm fixing sleeve is suitable for being fixed on a palm and connected with the holding arm so as to move along with the holding arm; the first elastic member is provided between the stopper and the holding arm. The bone joint correction fixator provided by the embodiment of the invention is convenient to use, can be worn directly, has a good holding effect, and can provide a very direct feedback effect for a patient by utilizing the reaction force of the first elastic piece to the palm.

Description

Bone joint correction fixer

Technical Field

The invention relates to medical equipment, in particular to an osteoarthroplasty fixator.

Background

Joint injury is a relatively common injury, and refers to a complex injury which is generated by overload of bone tissues of joints and tissues such as muscles, tendons, ligaments, joint discs and the like around the joints caused by impact of bones and joints in a certain direction and exceeding the limit of force which the joint can bear or violence such as extrusion, twisting and contusion and the like, and is called as bone joint injury.

In the case of fracture of the wrist joint, for example, fracture of the lower end of the wrist bone or radius, which is also a common fracture position, in the related art, when the operation is performed after the fracture, the wrist joint is usually fixed by using a simple fixing device which is simply manufactured, and the fixing effect is poor and the use is inconvenient.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the invention aims to propose an osteoarticular correction fixator.

To achieve the above object, an osteoarticular correction fastener according to an embodiment of the present invention includes:

A wrist-securing cuff adapted to be secured to a wrist;

The retaining assembly comprises a fixed seat, a stop piece and a retaining arm, the fixed seat is arranged on the wrist fixing sleeve, the stop piece is arranged on the fixed seat, and the retaining arm is positioned below the stop piece and can pivot around a preset axis relative to the fixed seat;

the palm fixing sleeve is suitable for being fixed on a palm and connected with the holding arm so as to move along with the holding arm;

and the first elastic piece is arranged between the stop piece and the retaining arm.

According to the bone joint correction fixator provided by the embodiment of the invention, the palm is sleeved in the palm fixing sleeve, the wrist is sleeved in the wrist fixing sleeve, the use is convenient, the wrist is directly worn, the retaining arm is connected between the wrist fixing sleeve and the palm fixing sleeve, the retaining arm can be used for keeping the palm and the arm relatively fixed, a better retaining effect is achieved, in addition, when the palm moves upwards, the retaining arm and the retaining piece are provided with the first elastic piece, and the first elastic piece has a certain compression amount, so that the fixing effect can be kept, the palm has a certain activity allowance, the larger the palm activity amplitude is, the larger the reaction force of the first elastic piece to the palm is, the palm is further limited to move greatly, in addition, the reaction force of the first elastic piece to the palm is utilized, the patient can be enabled to be very directly fed back, the patient can conveniently sense the activity allowance, and the self-protection instinct is generated.

In addition, the bone joint correction anchor according to the above-described embodiment of the present invention may have the following additional technical features:

according to one embodiment of the invention, a first gear and a second gear are arranged on the fixed seat, the first gear and the second gear are arranged in a vertically opposite way, and the first gear is meshed with the second gear;

The stop member is fixed to the first gear, one end of the holding arm is fixed to the second gear so that the stop member and the holding arm synchronously rotate in a direction approaching to each other or a direction separating from each other, and the other end of the holding arm is connected with the palm fixing sleeve.

According to one embodiment of the invention, the other end of the holding arm is provided with a universal ball head, and the palm fixing sleeve is provided with a ball head seat which is in running fit with the universal ball head.

According to one embodiment of the invention, the palm fixing sleeve is provided with a contraction adjuster for adjusting the radial size of the palm fixing sleeve so as to change the tightening force applied by the palm fixing sleeve to the palm.

According to one embodiment of the invention, the contraction regulator includes:

a winding box;

the reel is arranged in the winding box in a pivotable manner, and one end of the reel extends out of the winding box to form an operation part;

A locking assembly disposed between the spool and the winding box to selectively lock the spool in a desired angular position;

The palm fixing sleeve is a strip-shaped piece, and two ends of the strip-shaped piece penetrate into the winding box to be connected with the winding shaft, so that the palm fixing sleeve is contracted along the radial direction by winding the strip-shaped piece on the winding shaft when the winding shaft rotates.

According to one embodiment of the invention, the locking assembly comprises:

The first gear ring is fixed on the winding box, and a plurality of tooth parts are arranged on the side surface of the first gear ring at intervals along the circumferential direction;

The second gear ring is fixed on the scroll, a plurality of tooth grooves are formed in the side face of the second gear ring at intervals along the circumferential direction, and the tooth parts are matched with the tooth grooves;

the second elastic piece is arranged between the second gear ring and the winding box and is used for providing elastic acting force to force the second gear ring to be attached to the first gear ring.

According to one embodiment of the invention, the fixing base comprises:

A base plate portion fixed to the wrist fixing bush by a fastener;

a first branch portion and a second branch portion which are oppositely provided on the substrate portion and protrude upward;

The first gear is pivotally mounted on the first support portion and the second support portion through a first pivot shaft, the second gear is pivotally mounted on the first support portion and the second support portion through a second pivot shaft, and the second gear is located below the first gear.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of an embodiment of an osteoarticular correction fixator according to the present invention;

FIG. 2 is a schematic view of an embodiment of an osteoarticular correction fastener according to the present invention from another perspective;

FIG. 3 is a schematic view showing the structure of a palm fixing sleeve and a shrinkage adjuster in an osteoarthroplasty fixator according to an embodiment of the present invention;

FIG. 4 is an exploded view of the palm portion fixation sleeve and the contraction adjustment device in the bone joint correction fixator according to the embodiment of the present invention;

Fig. 5 is a schematic view showing the structure of the bone joint correction fixator according to the embodiment of the present invention in use.

Reference numerals:

10. wrist fixing sleeve;

20. a palm fixing sleeve;

21. A ball seat;

30. a retention assembly;

301. a fixing seat;

3011. a substrate portion;

3012. A first leg;

3013. A second leg;

302. a stopper;

303. a holding arm;

31. a first gear;

32. a second gear;

40. a first elastic member;

50. a contraction regulator;

501. A winding box;

502. a reel;

5021. an operation unit;

503. a locking assembly;

5031. A first ring gear;

5031a, teeth;

5032. A second ring gear;

5032a, tooth slot;

5033. And a second elastic member.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention, and all other embodiments, based on the embodiments of the present invention, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The bone joint correction anchor according to the embodiment of the present invention is described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, an osteoarthroplasty fixator according to an embodiment of the present invention includes a wrist brace 10, a holding assembly 30, a palm brace 20, and a first elastic member 40.

In particular, wrist-cuff 10 is adapted to be secured to a wrist, and wrist-cuff 10 may be secured to the wrist by means of a velcro or the like to the wrist of the patient.

The holding assembly 30 comprises a holder 301, a stopper 302 and a holding arm 303, the holder 301 is mounted on the wrist-securing cuff 10, the stopper 302 is provided on the holder 301, and the holding arm 303 is located below the stopper 302 and is pivotable about a predetermined axis relative to the holder 301.

The palm fixing sleeve 20 is adapted to be fixed to the palm, the palm fixing sleeve 20 is connected to the holding arm 303 so as to move with the holding arm 303, and the first elastic member 40 is provided between the stopper 302 and the holding arm 303.

Since the first elastic member 40 is located between the stopper 302 and the holding arm 303, when the arm of the patient rotates upward, the holding arm 303 rotates upward with the arm of the patient such that the distance between the holding arm 303 and the stopper 302 decreases, and the first elastic member 40 between the holding arm 303 and the stopper 302 is compressed, at which time the first elastic member 40 provides the downward elastic force (reaction force) to the holding arm 303 provided by the holding arm 303 below, and this reaction force acts on the holding arm 303, so that the upward rotation of the arm of the patient can be restricted.

According to the bone joint correction fixator provided by the embodiment of the invention, the palm is sleeved in the palm fixing sleeve 20, the wrist is sleeved in the wrist fixing sleeve 10, the use is convenient, the wrist fixing sleeve is directly worn, the retaining arm 303 is connected between the wrist fixing sleeve 10 and the palm fixing sleeve 20, the palm and the arm can be kept relatively fixed by utilizing the retaining arm 303, a better retaining effect is achieved, in addition, when the palm moves upwards, the retaining arm 303 and the stop member 302 are provided with the first elastic member 40, and a certain compression amount is provided for the first elastic member 40, so that the fixing effect can be maintained, the palm also has a certain activity allowance, and the larger the palm activity amplitude is, the larger the reaction force of the first elastic member 40 to the palm is, the palm is further limited to move greatly.

In one embodiment of the present invention, the fixing base 301 is provided with a first gear 31 and a second gear 32, the first gear 31 and the second gear 32 are disposed opposite to each other up and down, and the first gear 31 is meshed with the second gear 32.

A stopper 302 is fixed to the first gear 31, one end of the holding arm 303 is fixed to the second gear 32 so that the stopper 302 and the holding arm 303 are rotated synchronously in a direction approaching each other or a direction separating from each other, and the other end of the holding arm 303 is connected to the palm fixing sleeve 20.

That is, the fixing base 301 is provided with the first gear 31 and the second gear 32, the stopper 302 is fixedly connected to the first gear 31, the holding arm 303 is fixed to the second gear 32, when the arm of the patient rotates upward, the holding arm 303 rotates upward, at this time, the holding arm 303 drives the second gear 32 to rotate, the second gear 32 is meshed with the first gear 31, the first gear 31 is driven to rotate by the second gear 32, the stopper 302 is driven to rotate by the first gear 31, and the rotation direction of the stopper 302 is opposite to the rotation direction of the holding arm 303, that is, the rotation direction of the stopper 302 is downward.

In this embodiment, the first gear 31 and the second gear 32 are engaged to drive the stopper 302 and the retaining arm 303 to move in opposite directions, on the one hand, when the arm of the patient rotates upward, the retaining arm 303 and the stopper 302 move in directions approaching each other, the distance between the retaining arm 303 and the stopper 302 is reduced doubly, and the reaction force generated by the first elastic member 40 between the retaining arm 303 and the stopper 302 is greater, so that the margin of movement of the upward rotation of the palm can be limited by this rapidly increasing reaction force feedback, so that the palm fixing effect is better. On the other hand, when the holding arm 303 rotates upward, the stopper 302 rotates downward, which plays a role in restricting the rotation of the holding arm 303, so that the holding arm 303 can be kept substantially parallel to the arm of the patient as much as possible, and a good fixing and holding effect can be maintained.

In one embodiment of the present invention, the other end of the holding arm 303 is provided with a universal ball, and the palm fixing sleeve 20 is provided with a ball seat 21 which is in running fit with the universal ball, so that when the bone joint correction fixator is worn, the palm fixing sleeve 20 has a certain adaptability, the bone joint correction fixator can be more conveniently worn on the limb of a patient, and can have a certain adaptability to different patients.

In some embodiments of the present invention, a contraction adjuster 50 is provided on the palm fixing sleeve 20 for adjusting the radial size of the palm fixing sleeve 20 to change the tightening force applied by the palm fixing sleeve 20 to the palm.

That is, the size of the palm fixing sleeve 20 can be adjusted by the shrinkage adjuster 50, on one hand, the size of the palm fixing sleeve 20 can be adjusted to adapt to different patients, and on the other hand, the tightening force applied to the palm by the palm fixing sleeve 20 can be changed, so that the tightening force can be adjusted to be suitable, and the fixing effect is better.

In one embodiment of the present invention, the shrinkage adjuster 50 includes a winding box 501, a winding shaft 502 and a locking component 503, wherein the winding box 501 may be made of plastic, the winding shaft 502 is pivotally disposed in the winding box 501, and one end of the winding shaft 502 protrudes from the winding box 501 to form an operation portion 5021, that is, the winding shaft 502 is disposed on the winding box 501 and can rotate around its own axis.

A locking assembly 503 is provided between the spool 502 and the winding box 501 to selectively lock the spool 502 in a desired angular position; the palm fixing sleeve 20 is a strip-shaped member, and two ends of the strip-shaped member penetrate into the winding box 501 to be connected with the winding shaft 502, so that the strip-shaped member is wound on the winding shaft 502 when the winding shaft 502 rotates, and the palm fixing sleeve 20 is contracted along the radial direction.

That is, both ends of the band are connected to the reel 502, and when the reel 502 rotates, the band can be wound around the reel 502 so that the length of the band is shortened, and the band can be shortened so that the palm fixing sleeve 20 formed of the band is contracted, so that the size of the palm fixing sleeve 20 can be adjusted, which is convenient and simple to adjust. In addition, after the palm fixing sleeve 20 is adjusted, the spool 502 is locked and fixed by the locking assembly 503, so that the palm fixing sleeve 20 keeps the adjusted size, and a proper tightening force is applied to the palm of the patient.

In one embodiment of the present invention, the locking assembly 503 includes a first gear ring 5031, a second gear ring 5032, and a second elastic member 5033, where the first gear ring 5031 is fixed on the winding box 501, and a side surface of the first gear ring 5031 is provided with a plurality of teeth portions 5031a at intervals along a circumferential direction. The second gear ring 5032 is fixed on the spool 502, and a plurality of tooth grooves 5032a are circumferentially spaced on a side surface of the second gear ring 5032, and the plurality of tooth portions 5031a are matched with the plurality of tooth grooves 5032 a. A second elastic member 5033 is disposed between the second gear ring 5032 and the winding box 501, and is configured to provide an elastic force to force the second gear ring 5032 to be attached to the first gear ring 5031.

When the spool 502 is driven to rotate by the operation portion 5021, the second gear ring 5032 rotates along with the spool 502, during the rotation process, the second gear ring 5032 moves in a direction away from the first gear ring 5031, the second gear ring 5032 compresses the second elastic member 5033, so that the tooth groove 5032a on the second gear ring 5032 is separated from the tooth portion 5031a on the first gear ring 5031, and along with the further rotation of the second gear ring 5032, the tooth groove 5032a of the second gear ring 5032 rotates to a position opposite to the next tooth portion 5031a, at this time, the rotation of the spool 502 is stopped, under the effect of the elastic deformation recovered by the second elastic member 5033, the second gear ring 5032 is forced to move towards a direction close to the first gear ring 5031, and further the tooth groove 5032a on the second gear ring 5032 is matched with the tooth portion 5031a on the first gear ring 5031 again, so that the tooth groove 5032a on the second gear ring 5032 is matched with the tooth portion 5031a on the first gear ring 5031, and the palm portion 502 can be fixed at the adjusted position, and the fixed position of the palm portion 20 can be kept small after the adjustment is realized.

In this embodiment, with the above structure, when the first gear ring 5031, the second gear ring 5032 and the second elastic member 5033 are matched, the spool 502 is directly rotated during adjustment operation, and the spool 502 can be automatically locked and fixed after being released, so that the operation is simple and convenient, the locking is reliable, and in addition, the structure is simple.

In one embodiment of the present invention, the fixing base 301 includes a base plate 3011, a first support 3012 and a second support 3013, wherein the base plate 3011 is fixed on the wrist fixing cuff 10 by a fastener; the first branch 3012 and the second branch 3013 are oppositely provided on the base plate 3011 and protrude upward; the first gear 31 is pivotally mounted on the first support 3012 and the second support 3013 through a first pivot, the second gear 32 is pivotally mounted on the first support 3012 and the second support 3013 through a second pivot, and the second gear 32 is located below the first gear 31, so that the first gear 31 and the second gear 32 can be conveniently mounted.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. An osteoarticular correction fixator, comprising:

A wrist-securing cuff adapted to be secured to a wrist;

a first elastic member provided between the stopper and the holding arm;

The fixed seat is provided with a first gear and a second gear, the first gear and the second gear are arranged up and down oppositely, and the first gear is meshed with the second gear;

The stop piece is fixed to the first gear, one end of the retaining arm is fixed to the second gear so as to enable the stop piece and the retaining arm to synchronously rotate in a direction approaching to each other or a direction separating from each other, and the other end of the retaining arm is connected with the palm fixing sleeve;

the other end of the holding arm is provided with a universal ball head, and the palm fixing sleeve is provided with a head seat which is in running fit with the universal ball head.

2. The bone joint correction fixator of claim 1 wherein the palm fixing sleeve is provided with a contraction adjuster for adjusting the radial size of the palm fixing sleeve to vary the tightening force applied by the palm fixing sleeve to the palm.

3. The bone joint correction fixator of claim 2 wherein the contraction adjuster comprises:

a winding box;

4. The bone joint correction fixator of claim 3 wherein the locking assembly comprises:

5. The bone joint correction anchor of claim 1, wherein the anchor block comprises:

A base plate portion fixed to the wrist fixing bush by a fastener;