CN217138363U

CN217138363U - Femoral condyle prosthesis condyle holding device

Info

Publication number: CN217138363U
Application number: CN202220159834.7U
Authority: CN
Inventors: 赵永壮; 邵建东; 姚阳
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-08-09
Anticipated expiration: 2032-01-20

Abstract

The application discloses thighbone condyle prosthesis keeps condyle ware, including the uncovered and handheld casing of operator of being convenient for of one end, install and accept the subassembly, install telescopic just being used for colluding the subassembly of controlling of thighbone condyle prosthesis intercondylar opposite side in the inner chamber of casing at the open end of casing and with thighbone condyle prosthesis one side butt. The femoral condyle prosthesis has the advantages that the condyle holding device is used for holding the femoral condyle prosthesis between the femoral condyle condyles, the phenomenon that stress concentration occurs due to the fact that grooves on two sides are required to be formed in the femoral condyle prosthesis is avoided, and the service life of the femoral condyle prosthesis is guaranteed.

Description

Femoral condyle prosthesis condyle holding device

Technical Field

The application relates to the technical field of medical instruments, in particular to a femoral condyle prosthesis condyle holding device.

Background

The artificial total knee joint replacement operation is an operation which adopts materials such as metal, high molecular polyethylene, ceramics and the like, is made into an artificial knee joint prosthesis according to the shape, the structure and the functions of joints of a human body, is implanted into the human body through a surgical technology, replaces the functions of the affected joints, and achieves the purposes of relieving joint pain and recovering the functions of the joints. In knee replacement surgery, the femoral condyle prosthesis needs to be held and placed in a proper position by using a condyle holding device.

In the related art, most of the condyle holding devices adopt clamping jaws at two sides to clamp the femoral condyle, and corresponding groove structures are required to be arranged at two sides of the femoral condyle for matched clamping during casting processing, but the stress concentration phenomenon of the femoral condyle prosthesis structure can be caused by the arrangement of the groove structures, and the service life of the femoral condyle prosthesis is shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that stress concentration is caused by the fact that a groove structure is formed on a femoral condyle prosthesis when the condyle holding device is matched with the femoral condyle prosthesis in the related art, the application provides the femoral condyle prosthesis condyle holding device.

The application provides a thighbone condyle prosthesis holds condyle ware adopts following technical scheme:

a femoral condyle prosthesis holding device comprises a shell with an open end and convenient for an operator to hold, a bearing component which is arranged at the open end of the shell and is abutted against one side of a femoral condyle prosthesis, and a holding component which is arranged in an inner cavity of the shell and extends out to hook the other side between condyles of the femoral condyle prosthesis.

By adopting the technical scheme, the holding component extends out from the middle condyle of the femoral condyle prosthesis, and the femoral condyle prosthesis is hooked and pressed on the bearing component, so that the femoral condyle can be held by the condyle holding device, the phenomenon of stress concentration caused by the fact that grooves on two sides of the femoral condyle prosthesis are required to be formed is avoided, and the service life of the femoral condyle prosthesis is ensured.

Optionally, the holding component comprises a first jaw and a second jaw which are installed in the inner cavity of the housing and are in hinged fit, one end of the first jaw is provided with an everted pressing curved surface, the second jaw and the first jaw are identical in structure and are symmetrically installed, and the pressing curved surfaces of the first jaw and the second jaw respectively grab the femoral condyle prosthesis from the middle condyle.

Through adopting above-mentioned technical scheme, articulated cooperation realizes that first jack catch and second jack catch open and closed activity gesture adjustment, and the press cambered surface of first jack catch and second jack catch stretches to and carries out the overhead kick and press on the condyle of thighbone condyle prosthesis within a definite time, realizes holding the thighbone condyle prosthesis firmly.

Optionally, the holding component comprises a bayonet lock and a small tension spring, the bayonet lock is matched with the receiving component, the small tension spring is installed on the first jaw and the second jaw and used for providing reset tension, the first jaw and the second jaw are provided with inclined guide surfaces, and the bayonet lock is abutted to the guide surfaces.

Through adopting above-mentioned technical scheme, the bayonet lock with the spigot surface cooperation of first jack catch and second jack catch, stretch out the in-process at first jack catch and second jack catch, the bayonet lock is adjusted the interval position of first jack catch and second jack catch, and the in-process of retracting, little extension spring exerts pulling force to first jack catch and second jack catch, makes first jack catch and second jack catch interval diminish, retrieves to the casing in.

Optionally, the holding component comprises a button connected with the hinged ends of the first jaw and the second jaw and provided with a sliding boss connected with the inner cavity of the shell in a sliding manner.

Through adopting above-mentioned technical scheme, the button drives first jack catch and second jack catch and slides along the inner chamber of casing, and the operator only needs can control the flexible of first jack catch and second jack catch through applying external force to the button, and the operation is simple and easy, and convenient to use is laborsaving.

Optionally, the holding component comprises a large tension spring connected with one side of the button and used for providing a button reset tension.

By adopting the technical scheme, when the femoral condyle prosthesis is held, the large tension spring applies tension to enable the first clamping jaw and the second clamping jaw to be hooked between condyles tightly, so that the femoral condyle prosthesis is forced to be attached to the bearing component, and the position of the femoral condyle prosthesis is fixed; after the installation position of the femoral condyle prosthesis is determined, an operator does not need to manually dial the button back to the initial position again, the button is automatically reset by the elasticity of the large tension spring, the operation steps are reduced, and the use is convenient.

Optionally, the outer side of the shell is provided with pipe threads, and a locking knob for limiting the movement of the button is installed in a matched mode.

By adopting the technical scheme, after the first clamping jaw and the second clamping jaw are clamped on the femoral condyle prosthesis, the positions of the buttons can be limited by screwing the locking knob, so that the positions of the first clamping jaw and the second clamping jaw are locked, and the clamping jaws are prevented from loosening.

Optionally, the receiving assembly comprises a receiving pad installed on one side of the open end of the shell, one side of the receiving pad is a concave curved surface matched with the joint surface of the femoral condyle prosthesis, and the type of the receiving pad is divided into left and right.

By adopting the technical scheme, the bearing pad is arranged corresponding to the joint surface of the femoral condyle prosthesis, the femoral condyles of the left knee and the right knee are further finely distinguished, when the femoral condyle prosthesis is held, the bearing pad is more attached to the joint surface, the contact area is increased, and the holding stability is improved.

Optionally, the end opposite to the open end of the shell is provided with a knurled pattern.

By adopting the technical scheme, the surface friction of the handheld part of an operator on the shell is increased by the reticulate pattern knurling, the handheld operation of the operator is facilitated, and the slipping phenomenon is prevented; and the reticulate pattern knurling also increases the identification degree and the aesthetic property of the product.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the holding component is arranged in the inner cavity of the shell and extends out to hook the other side of the condyle of the femoral condyle prosthesis tightly, the holding component extends out from the middle condyle of the femoral condyle prosthesis and hooks and presses the femoral condyle prosthesis tightly on the bearing component, so that the femoral condyle can be held and held by the holding device, the phenomenon of stress concentration caused by the fact that grooves on two sides are formed in the femoral condyle prosthesis is avoided, and the service life of the femoral condyle prosthesis is guaranteed.

2. Through setting up button, bayonet lock and the little extension spring of connecting first jack catch and second jack catch, the flexible of first jack catch of button sliding adjustment and second jack catch in the casing, bayonet lock and little extension spring cooperation restriction first jack catch and the stretching of second jack catch return the gesture, easy and simple to handle, convenient to use.

3. Through the arrangement of the bearing pad jointed with the joint surface of the femoral condyle prosthesis and the large tension spring connected with the button, the elasticity of the large tension spring enables the first clamping jaw and the second clamping jaw to hook the intercondylar of the femoral condyle prosthesis tightly, the femoral condyle prosthesis is forced to be pressed and jointed with the bearing pad, and the stability in the holding and mounting processes is improved.

Drawings

FIG. 1 is a schematic view of a femoral condyle prosthetic condylar holder of an embodiment of the present application;

FIG. 2 is a cross-sectional view of a femoral condyle prosthetic condylar holder of an embodiment of the present application;

FIG. 3 is a partial cross-sectional view of a susceptor assembly in an embodiment of the present application.

Description of reference numerals: 1. a housing; 2. a receiving assembly; 21. a base; 211. a limiting groove; 22. a bearing pad; 221. a yielding groove; 3. a holding component; 31. a claw part; 311. a first jaw; 3111. pressing the curved surface; 3112. a position avoiding platform; 3113. a guide surface; 312. a second jaw; 313. a connecting pin; 314. a bayonet lock; 32. a small tension spring part; 321. a small tension spring; 322. a small tension spring shaft; 33. a button portion; 331. a button; 3311. a sliding boss; 3312. a stressed boss; 3313. locking the boss; 332. a button limit pin; 34. a large tension spring portion; 341. a big tension spring; 342. a large tension spring shaft; 4. locking the knob; 5. a femoral condyle prosthesis.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a femoral condyle prosthesis holding device, which is shown in figure 1 and comprises a shell 1, a receiving component 2, a holding component 3 and a locking knob 4, wherein one end of the shell 1 is open, the inner cavity of the shell is hollow, one side of the receiving component 2 is installed at the open end of the shell 1, and the other side of the receiving component 2 is tightly attached to a femoral condyle prosthesis 5; the holding component 3 is arranged in the inner cavity of the shell 1 and clamps and fixes the condyles of the femoral condylar prosthesis 5; the locking knob 4 is installed outside the housing 1, and locks the position of the grip member 3 to prevent looseness.

Referring to fig. 2 and 3, the receiving assembly 2 includes a base 21 and a receiving pad 22, one side of the base 21 is fixedly connected to the open end of the shell 1, the receiving pad 22 is installed on one side of the base 21 facing away from the shell 1, and one side of the receiving pad 22 facing away from the base 21 is in press fit with the femoral condyle prosthesis 5. The bearing pad 22 is provided with an inner concave curved surface, the inner concave curved surface is matched with the joint surface of the femoral condyle prosthesis, the model of the bearing pad 22 is divided into left and right, the femoral condyle prosthesis 5 is more attached when being pressed on the inner concave curved surface of the bearing pad 22, the contact area is increased, and the stability is improved.

The holding component 3 comprises a claw part 31, a small tension spring part 32, a button part 33 and a large tension spring part 34, the claw part 31 comprises a first claw 311, a second claw 312, a connecting pin 313 and a bayonet 314, one end of the first claw 311 is provided with an outward-turned pressing curved surface 3111, the barb pressing function of the femoral condyle prosthesis 5 is realized, the other end of the first claw 311 is provided with an inward-recessed avoidance table 3112, the avoidance table 3112 is provided with a through hole, the second claw 312 and the first claw 311 are identical in structure and are symmetrically installed, the pressing curved surfaces 3111 of the first claw 311 and the second claw 312 are deviated from each other, the avoidance tables 3112 are mutually matched and abutted, and the axes of the through holes on the avoidance tables 3112 are superposed; the connecting pin 313 is inserted into the through hole, and the first jaw 311 and the second jaw 312 are in hinged fit with the connecting pin 313 as a rotating shaft.

First jack catch 311 is provided with the logical groove that runs through and with logical groove direction vertically mounting hole on being close to the position of keeping away platform 3112, after first jack catch 311 and second jack catch 312 symmetrical arrangement, little extension spring portion 32 is located between two sets of logical grooves, little extension spring portion 32 includes little extension spring 321 and little extension spring axle 322, little extension spring axle 322 sets up to two, wear to establish respectively in the mounting hole of first jack catch 311 and second jack catch 312, little extension spring 321 both ends respectively with two little extension spring axle 322 rigid couplings, when little extension spring 321 is in tensile state, exert the pulling force that is close to each other all the time to first jack catch 311 and second jack catch 312.

An inclined guide surface 3113 is provided at a position of the first claw 311 close to the pressing curved surface 3111, and after the first claw 311 and the second claw 312 are symmetrically arranged, the detent 314 is positioned between the first claw 311 and the second claw 312, and the side surfaces of the detent 314 abut against the guide surfaces 3113 of the first claw 311 and the second claw 312, respectively, so that the first claw 311 and the second claw 312 are spread along the guide surface 3113, and the small tension spring 321 is stretched.

Bayonet 314 and base 21 cooperation installation, one side that base 21 deviates from casing 1 is provided with the boss, base 21 has been seted up spacing groove 211 and has been link up to casing 1 inner chamber, bayonet 314 perpendicular spacing groove 211's direction is worn to establish and is fixed on the boss, accepts that one side that pad 22 is close to base 21 corresponds and has been seted up the inner groovy, with base 21's boss cooperation embedding installation, and accept that pad 22 corresponds base 21's spacing groove 211 and also seted up and step down groove 221. The hinged ends of the first claw 311 and the second claw 312 are inserted into the housing 1, and one end of the pressing curved surface 3111 extends out of the housing 1, and can slide in the limiting groove 211 of the base 21 and the receding groove 221 of the receiving pad 22.

The button portion 33 comprises a button 331 and a button limiting pin 332, wherein one end of the button 331 is provided with a mounting groove and a connecting hole which is penetrated through the mounting groove, the hinged ends of the first clamping jaw 311 and the second clamping jaw 312 extend into the mounting groove of the button 331, and the connecting pin 313 penetrates through the connecting hole of the button 331 to be fixedly mounted.

The button 331 is installed in the cavity of the shell 1, and two opposite side surfaces of the button 331 are provided with sliding bosses 3311 which are matched with the inner side surface of the shell 1 and can make linear sliding motion along the axial direction of the shell 1; the other two opposite sides of the button 331 are provided with outward extending force-bearing bosses 3312, the side wall of the housing 1 is correspondingly provided with a slide rail groove, and the force-bearing bosses 3312 of the button 331 extend out from the slide rail groove of the housing 1 to be pushed by an external force applied by an operator.

One end of the button 331, which is far away from the first jaw 311 and the second jaw 312, is connected with a large tension spring portion 34, the large tension spring portion 34 includes a large tension spring 341 and a large tension spring shaft 342, the large tension spring shaft 342 is arranged on the housing 1 in a penetrating manner, the large tension spring 341 is located in the housing 1, and two ends of the large tension spring are fixedly connected with the large tension spring shaft 342 and one side of the button 331 respectively. When the button 331 moves away from the extension spring 341, the extension spring 341 is pulled, and a reverse restoring force is applied to the button 331. The button limiting pin 332 is installed in the inner cavity of the housing 1 at the initial position corresponding to the button 331 to prevent the button 331 from being excessively stretched by the tension of the extension spring 341 to be separated from the initial position.

The one end that casing 1 is close to base 21 is provided with the pipe thread, and locking knob 4 cooperation is screwed on casing 1, and button 331 is provided with locking boss 3313 on stretching out the position of casing 1, and button 331 slides to the base 21 direction, reaches suitable position after, screws locking knob 4, and the medial surface of locking knob 4 and the locking boss 3313 of button 331 support the press contact, and interference fit restricts the continuation of button 331 and removes.

The opposite side end of the open end of the shell 1 is provided with the reticulate pattern knurl, so that the surface friction of the shell 1 is increased, slipping is prevented, and an operator can hold the shell conveniently.

The implementation principle of the embodiment of the application is as follows: when holding the femoral condyle prosthesis 5, pressing one side of the femoral condyle prosthesis 5 against the bearing pad 22; an operator pushes the button 331 towards the femoral condyle prosthesis 5, the button 331 drives the claw portion 31 to move, the guide surfaces 3113 of the first claw 311 and the second claw 312 extend out from the condyle of the femoral condyle prosthesis 5 along the fixed clamping pin 314, as the first claw 311 and the second claw 312 move upwards, the clamping pin 314 also gradually enlarges the distance between the first claw 311 and the second claw 312, and the small tension spring 321 is stressed and stretched; when the pressing curved surface 3111 of the first claw 311 and the second claw 312 is pressed against the other side of the femoral condyle prosthesis 5, the operator releases the external force of the dragging button 331, the large tension spring 341 contracts and applies a restoring tension in the opposite direction, the first claw 311 and the second claw 312 are hooked between the condyles to force the femoral condyle prosthesis 5 and the receiving pad 22 to be tightly attached, and thus the position of the femoral condyle prosthesis 5 is fixed; the locking knob 4 is screwed to restrict the movement of the button 331, thereby locking the positions of the first and second jaws 311 and 312 to prevent looseness.

After the femoral condyle prosthesis 5 is put into a proper position, the locking knob 4 is loosened, the button 331 is slightly pushed towards the bearing pad 22, the first claw 311 and the second claw 312 are separated from the femoral condyle prosthesis 5, and under the tension of the small tension spring 321, the first claw 311 and the second claw 312 are close to and tightened; when the button 331 is released, the large tension spring 341 continues to contract, the button 331 and the claw portion 31 are driven to reset and move downwards, the main body of the claw portion 31 retracts into the shell 1, and the femoral condyle prosthesis 5 is installed.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The utility model provides a thighbone condyle prosthesis holds condyle ware which characterized in that: the femoral condyle prosthesis comprises a shell (1) with an open end and convenient for an operator to hold, a bearing component (2) which is arranged at the open end of the shell (1) and is abutted against one side of the femoral condyle prosthesis (5), and a holding component (3) which is arranged in an inner cavity of the shell (1) and extends out to hook the other side between condyles of the femoral condyle prosthesis (5).

2. The femoral condyle prosthetic condylar holder of claim 1, wherein: the holding component (3) comprises a first claw (311) and a second claw (312) which are installed in an inner cavity of the shell (1) and are in hinged fit, one end of the first claw (311) is provided with an everted pressing curved surface (3111), the second claw (312) and the first claw (311) are identical in structure and are symmetrically installed, and the pressing curved surfaces (3111) of the first claw (311) and the second claw (312) grab the femoral condyle prosthesis (5) from the middle condyle.

3. The femoral condyle prosthetic condylar holder of claim 2, wherein: the holding component (3) comprises a bayonet lock (314) which is installed in a matching mode with the bearing component (2) and a small tension spring (321) which is installed between a first claw (311) and a second claw (312) and used for providing reset tension, the first claw (311) and the second claw (312) are provided with inclined guide surfaces (3113), and the bayonet lock (314) is in butt fit with the guide surfaces (3113).

4. The femoral condyle prosthetic condylar holder of claim 2, wherein: the holding component (3) comprises a button (331) which is connected with the hinged ends of the first clamping jaw (311) and the second clamping jaw (312) and is provided with a sliding boss (3311) which is connected with the inner cavity of the shell (1) in a sliding manner.

5. The femoral condyle prosthetic condylar holder of claim 4, wherein: the holding component (3) comprises a large tension spring (341) which is connected with one side of the button (331) and is used for providing the reset tension of the button (331).

6. The femoral condyle prosthetic condylar holder of claim 4, wherein: the outside of the shell (1) is provided with pipe threads, and a locking knob (4) used for limiting the movement of the button (331) is installed in a matched mode.

7. The femoral condyle prosthetic condylar holder of claim 1, wherein: the bearing component (2) comprises a bearing pad (22) arranged on one side of an open end of the shell (1), one side of the bearing pad (22) is an inwards concave curved surface matched with a joint surface of the femoral condyle prosthesis (5), and the model of the bearing pad (22) is divided into left and right.

8. The femoral condyle prosthetic condylar holder of claim 1, wherein: and a reticulate pattern knurl is arranged at the opposite side end of the open end of the shell (1).