CN112155811B

CN112155811B - Knee joint self-locking condyle taking device

Info

Publication number: CN112155811B
Application number: CN202011045360.5A
Authority: CN
Inventors: 解凤宝; 郝孟娟; 史春宝; 吕昌禹
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2023-09-19
Anticipated expiration: 2040-09-28
Also published as: CN112155811A

Abstract

The application relates to a knee joint self-locking condyle taking device, which relates to the field of medical equipment and comprises a condyle taking device body and a control assembly for controlling the condyle taking device to clamp or loosen a condyle, wherein the condyle taking device body comprises a force application rod and two locking hook claws hinged on the force application rod, the two locking hook claws are positioned on the same side of the force application rod, an opening for clamping the condyle is formed at one end of the two locking hook claws, which is far away from the force application rod, the control assembly is used for controlling the opening of the two locking hook claws, and the control end of the control assembly is positioned at one side of the force application rod, which is far away from the locking hook claw. The application has the effects of reducing the complexity in the process of taking the condyle and shortening the operation time.

Description

Knee joint self-locking condyle taking device

Technical Field

The application relates to the field of medical instruments, in particular to a knee joint self-locking condyle taking device.

Background

The knee joint mainly comprises a femur lower end, a tibia upper end and a patella, when the femur and tibia joint gap is narrowed and the joint cartilage is seriously damaged to cause dysfunction, the worn cartilage on the surfaces of the femur and the tibia is removed through knee joint replacement, and the knee joint is replaced by an artificial joint to restore the function of the knee joint.

In knee joint replacement surgery, after four-sided osteotomy is completed, in order to more accurately simulate a bone structure, a test condyle is required to be smashed into an osteotomy surface before an artificial joint is installed, and a proper prosthesis model is finally selected through installation and comparison. After the installation and comparison, the trial condyle is taken out from the osteotomy face.

With respect to the related art as described above, the inventors considered that the operation was troublesome and the time of the operation was increased when taking out the trial condyle.

Disclosure of Invention

In order to reduce the complexity in the process of taking the condyle and shorten the operation time, the application provides a knee joint self-locking condyle taking device.

The application provides a knee joint self-locking condyle taking device which adopts the following technical scheme:

the utility model provides a knee joint auto-lock is got condylar device, is including getting the condylar ware body and being used for controlling to get the condylar ware and carry out centre gripping or unclamping to the test condyle control assembly, it includes the application of force pole and articulates two latch hook claws on the application of force pole, two latch hook claws are located the application of force pole homonymy, two latch hook claws keep away from the one end of application of force pole forms the opening that is used for the centre gripping test condyle, control assembly is used for controlling two latch hook claw open-ended size, control assembly's control end is located the application of force pole is kept away from one side of latch hook claw.

Through adopting above-mentioned technical scheme, during the use, the staff directly holds the application of force pole, then keep away from the one side of lock claw at the application of force pole, the opening that is greater than the test condyle through the control assembly control two lock claws, place two lock claws in the both sides of test condyle again, and keep away from the one end of lock claw at the application of force pole and adjust the opening between two lock claws through the control assembly and diminish, thereby carry out the centre gripping to the test condyle, direct handheld application of force pole will test the condyle and take out at last, because the control assembly will control the opening size of lock claw always in the in-process of taking out, so can not make the test condyle fall out from between two lock claws. The staff can control the opening size of the locking claw through the control component at the end of the force application rod far away from the locking claw, so that the operation is very simple, and the operation time is greatly shortened.

Optionally, the force application rod comprises a connecting rod for installing the latch hook claw and a handle vertically fixedly connected to the side wall of the connecting rod, and the handle is positioned at one side of the connecting rod, which is away from the openings of the two latch hook claws.

Through adopting above-mentioned technical scheme, during the use, just can get the condylar operation through operating handle, the operation is more convenient.

Optionally, the handle is located between the two latch hooks.

By adopting the technical scheme, the stress is more uniform.

Optionally, the control assembly includes two drive bars of hinging two the opposite one side of latch hook claw and articulates two the drive bar is kept away from the action bars of latch hook claw one end, the handle is kept away from the one end of connecting rod set up the intercommunication to the connecting rod is kept away from the mounting hole of handle one side, the mounting hole supplies the action bars wears to establish, the action bars is kept away from the one end of latch hook claw wears to locate the mounting hole and extends to the handle is kept away from the one end outside of connecting rod.

Through adopting above-mentioned technical scheme, when two latch hook claw opening sizes need be controlled, the position of direct slip action bars in the mounting hole just can drive the relative one end of two connecting rods along action bars length direction motion through the action bars, and the connecting rod will stimulate two latch hook claws and rotate around the articulated shaft with the connecting rod, thereby two latch hook claws keep away from the one end of connecting rod will be close to each other or keep away from thereby realize the centre gripping and the unclamping to the test condyle.

Optionally, the action bars include articulated two first pole and rigid coupling between the latch hook claw first pole is kept away from the second pole of latch hook claw one end, the girth of second pole is greater than the girth of first pole, the mounting hole is including seting up the handle is close to latch hook claw one end supplies the first hole that first pole worn to establish and seting up the handle is kept away from latch hook claw one end supplies the second hole that the second pole worn to establish, first hole with second hole junction forms the step face of echelonment, the cover is equipped with locking spring on the first pole, locking spring is located in the second hole, locking spring one end butt is on the step face, the other end butt is in the second pole is towards the one end of first pole.

Through adopting above-mentioned technical scheme, under the normal state, will butt second pole to the direction motion of keeping away from the lock claw under locking spring effect to make the opening between two lock claw narrow, when needs carry out the centre gripping to the test condyle, directly keep away from the one end of first pole at the second pole and promote the second pole to the direction that first pole is located, thereby extrudeed locking spring, two connecting rods will be located on same straight line this moment, and the opening between two lock claw will be opened, and direct handheld handle will two lock claw place can in the test condyle both sides. Then release the thrust of exerting on the second pole, will promote the second pole and move to the direction of keeping away from first pole under locking spring effect, first pole also drives two latch hook claws through the connecting rod and rotates around the articulated shaft with driving the pole relatively, realizes the automatic centre gripping to the test condyle.

Optionally, the second pole is kept away from the first pole one end rigid coupling has the operating head.

By adopting the technical scheme, when the second rod is operated to slide in the mounting hole, the second rod can be driven to move by operating the operating head; when the test condyle is difficult to take out, the sliding hammer can be clamped on the second rod by means of the sliding hammer, the position of the sliding hammer is fixed through the operation head, and then the test condyle is taken out through the sliding hammer, so that the operation is more flexible.

Optionally, one end of each locking claw far away from the force application rod is fixedly connected with a clamping hook, and the clamping hooks are positioned on one opposite sides of the two locking claws.

Through adopting above-mentioned technical scheme, the trip can carry out spacingly to the test condyle of centre gripping in the latch hook claw, reduces the probability that the test condyle drops from the latch hook claw for the test condyle is fixed more stable.

Optionally, anti-skid patterns are processed on the handle.

By adopting the technical scheme, the friction force of a worker when holding the handle can be increased.

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

1. the control end of the control component is positioned at one end of the force application rod far away from the locking claw, so that a worker can control the opening size of the locking claw outside, and the operation is more convenient;

2. the connecting rod and the force application rod are arranged, so that the size of the openings of the two locking hook claws can be controlled by sliding the position of the force application rod in the chute, the operation is very simple, and the operation time is greatly shortened;

3. the locking spring is arranged, so that the two locking claws are in a mutually approaching state under the action of the locking spring, and the test condyle is clamped more firmly.

Drawings

Fig. 1 is a schematic diagram of a structure for embodying the related art.

Fig. 2 is a schematic diagram of the overall structure of the present application.

Fig. 3 is a schematic cross-sectional front view of the present application.

Reference numerals illustrate: 1. a condylar-taking device body; 11. a force application rod; 111. a connecting rod; 112. a handle; 113. a mounting hole; 1131. a first hole; 1132. a second hole; 12. a locking claw; 121. a hook; 2. a control assembly; 21. a drive rod; 22. an operation lever; 221. a first lever; 222. a second lever; 223. an operation head; 23. an auxiliary lever; 24. a locking spring; 25. an adjusting bolt; 26. abutting against the spring; 31. a handle; 32. a mounting block; 321. a slide hole; 322. placing the hole; 33. and a slide bar.

Detailed Description

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

Referring to fig. 1, a condyle remover used in the related art at present mainly comprises a handle 31, a mounting block 32 vertically fixedly connected to one end of the handle 31, locking claws 12 slidably connected to two ends of the mounting block 32, and a control assembly 2 for controlling the distance between the two locking claws 12. Wherein, two latch claws 12 are located at one side of the mounting block 32 far away from the handle 31, and an opening for clamping the trial condyle is formed between one end of the two latch claws 12 far away from the mounting block 32 and the mounting block 32. Slide bars 33 are fixedly connected to opposite sides of the two latch hook claws 12, slide holes 321 for the two slide bars 33 to slide are formed in opposite ends of the mounting block 32, one ends of the two slide bars 33, which are far away from the latch hook claws 12, are located in the slide holes 321 and distributed in the slide holes 321 in a staggered manner, and sliding fit between the latch hook claws 12 and the mounting block 32 can be realized through matching of the slide bars 33 and the slide holes 321.

The two ends of the penetrating installation block 32 are provided with the placing holes 322, the placing holes 322 are stepped holes with small middle and large two ends, the placing holes 322 form two stepped surfaces at the diameter change positions of the placing holes, the control assembly 2 comprises an adjusting bolt 25 penetrating through the placing holes 322, the adjusting bolt 25 is inserted from one side, far away from the other locking claw 12, of one locking claw 12, sequentially penetrates through the placing holes 322 and finally is in threaded connection with the other locking claw 12, two abutting springs 26 are sleeved on the adjusting bolt 25, the abutting springs 26 are respectively located between the two locking claws 12 and the installation block 32, one end, facing the installation block 32, of each of the two abutting springs 26 is located in the large hole at the end of the placing hole 322, and the two abutting springs are abutted to the stepped surfaces of the placing holes 322. Under the normal condition, the two latch hook claws 12 can be mutually far away under the action of the abutting spring 26, the distance between the two latch hook claws 12 is fixed through the adjusting bolt 25, when the test condyle is required to be clamped, the adjusting bolt 25 is screwed, the adjusting bolt 25 drives one latch hook claw 12 far away from the bolt head of the adjusting bolt 25 to approach the direction of the mounting block 32, and the abutting spring 26 is extruded, so that the opening between the two latch hook claws 12 is reduced, and the clamping of the test condyle is realized. However, when the trial condyle is taken out, since the trial condyle is located on the osteotomy surface of the human body, the operator needs to screw the adjusting bolt 25 to clamp the trial condyle at a position close to the trial condyle. The operation is troublesome, and the interference with the joint of the human body is avoided when the adjusting bolt 25 is screwed, so that the screwing is troublesome, and the operation time is greatly increased.

Therefore, the embodiment of the application discloses a knee joint self-locking condyle taking device. Referring to fig. 2, the knee joint self-locking condyle taking device comprises a condyle taking device body 1 and a control assembly 2 for controlling the condyle taking device body 1 to clamp or unclamp a trial condyle.

Referring to fig. 2, the condyle extractor body 1 includes a force application rod 11 and two latch claws 12 hinged on the force application rod 11, wherein the force application rod 11 includes a connecting rod 111 and a handle 112 vertically and fixedly connected on a side wall of the connecting rod 111, the handle 112 is fixedly connected in a middle position of the connecting rod 111 and integrally formed with the connecting rod 111, the latch claws 12 are hinged at two ends of the connecting rod 111, the latch claws 12 are located at one side of the connecting rod 111 away from the handle 112, and an opening for clamping a condyle is formed at one end of the two latch claws 12 away from the connecting rod 111. The control end of the control component 2 is positioned at one end of the handle 112 far away from the locking claw 12, and the size of an opening between the two locking claws 12 can be controlled by the control component 2 so as to clamp and unclamp the trial condyle. When the clamp is used, a worker directly holds the handle 112 to place the locking claw 12 on two sides of two test condyles, and then the opening between the two locking claw 12 can be controlled by operating the control assembly 2 at one end of the handle 112 far away from the locking claw 12, so that the clamping and the loosening of the test condyles are realized.

Wherein, the two locking claws 12 can be cylindrical or rectangular cylindrical; of course, the longitudinal section of the locking claw 12 may be rectangular or arc, and when the section of the locking claw 12 is arc, the openings of the two locking claws 12 are opposite to each other to clamp the trial condyle between the two locking claws 12.

Referring to fig. 2 and 3, the control assembly 2 includes a driving lever 21 hinged between two locking claws 12 and an operating lever 22 hinged between the two driving levers 21, the length direction of the operating lever 22 is consistent with the length direction of the handle 112, wherein an auxiliary lever 23 is vertically fixedly connected to one end of the operating lever 22 near the driving lever 21, and one ends of the two driving levers 21 far from the locking claws 12 are respectively hinged to two ends of the auxiliary lever 23. Meanwhile, a mounting hole 113 communicated to one side of the connecting rod 111 away from the connecting rod 111 is formed in one end of the handle 112 away from the connecting rod 111, and one end of the operating rod 22 away from the two driving rods 21 penetrates through the mounting hole 113 from one end close to the connecting rod 111 and penetrates out of one end of the handle 112 away from the connecting rod 111 to be exposed to the outside for people to operate, so that an operating end of the control assembly 2 is formed. The operator directly operates the operation end to drive the operation rod 22 to slide in the mounting hole 113, and then the end, away from the locking claw 12, of the two connecting rods 111 can be pulled to approach the handle 112 through the auxiliary rod 23, so that the two connecting rods 111 form a certain angle and drive the two locking claw 12 to rotate around the hinge shaft with the connecting rods 111, and the opening size between the two locking claw 12 is reduced, so that the clamping of the trial condyles is realized.

The operation rod 22 includes a cylindrical first rod 221 vertically fixed to the auxiliary rod 23, and a cylindrical second rod 222 fixed to an end of the first rod 221 remote from the auxiliary rod 23, wherein a diameter of the second rod 222 is larger than a diameter of the first rod 221. The mounting hole 113 comprises a first hole 1131 formed in the side wall of the connecting rod 111 and at one end of the handle 112, close to the connecting rod 111, for the first rod 221 to slide in, and a second hole 1132 formed in the end of the handle 112, far away from the connecting rod 111, for the second rod 222 to slide in, wherein the first hole 1131 is communicated with the second hole 1132, and a step surface is formed at the joint of the first hole 1131 and the second hole 1132. The control assembly 2 further comprises a locking spring 24 sleeved on the first rod 221, the locking spring 24 is located in the second hole 1132, one end of the locking spring 24 is abutted against a step surface formed by the second hole 1132 and the first hole 1131, the other end of the locking spring 24 is abutted against one end of the second rod 222 facing the first rod 221, and normally, the locking spring 24 pushes the second rod 222 away from the locking claw 12 under the action of elasticity of the locking spring 24.

When the trial condyles are required to be clamped, the second rod 222 is directly pressed to the direction of the locking hook claw 12 at one end of the handle 112 far away from the locking hook claw 12, so that the second rod 222 can be driven to slide in the mounting hole 113, at the moment, the second rod 222 also extrudes the locking spring 24, and the two driving rods 21 are driven to move to the direction far away from the handle 112 through the auxiliary rod 23 until the two driving rods 21 are positioned on the same straight line, and at the moment, the opening between the two locking hook claws 12 is also in the maximum state. The staff directly holds the handle 112 to place the two latch hook claws 12 on two sides of the test condyle, then releases the thrust applied to the second rod 222, pushes the second rod 222 to move in the direction away from the latch hook claw 12 under the action of the elasticity of the locking spring 24, and the second rod 222 drives the two driving rods 21 to rotate around the hinge shaft with the latch hook claws 12 through the auxiliary rod 23 and form an included angle with an opening facing to the side away from the connecting rod 111, so that the two latch hook claws 12 are driven to rotate around the hinge shaft with the connecting rod 111 relatively, and the test condyle is clamped. The operator's support is then removed by manipulating the handle 112, and the trial condyle is held more firmly during removal because the locking spring 24 is always in contact with the second lever 222 in a direction away from the locking knuckle 12.

It will be appreciated that the cross-sections of the first rod 221 and the second rod 222 may be rectangular or triangular, as long as it is possible to achieve that when the locking spring 24 is fitted over the first rod 221, one end of the locking spring 24 facing the second rod 222 may abut against the end wall of the second rod 222 facing the first rod 221 and push the second rod 222 in a direction away from the latch claw 12.

Meanwhile, in order to prevent the trial condyles from falling out from the openings of the two locking claw 12 when the locking claw 12 drives the trial condyles to be taken down, a clamping hook 121 is fixedly connected to one end of each locking claw 12 far away from the connecting rod 111, and the two clamping hooks 121 are positioned between the two locking claw 12. Specifically, the hook 121 may be formed by bending two hook claws 12 toward opposite sides. The clamping hook 121 can play a role in limiting and fixing the test condyle, and the probability that the test condyle falls from between the two locking hook claws 12 is reduced.

Referring to fig. 2, an operation head 223 is further fixedly connected to an end of the second rod 222 far from the first rod 221, and when a person operates the second rod 222 to move, the operation head 223 can be directly used for operation, so that the operation is more convenient. And when the test condyle is difficult to take out, the test condyle can also be clamped on the second rod 222 by the aid of the sliding hammer, the position of the sliding hammer on the second rod 222 is fixed by the operation head 223, and the test condyle is taken out by the sliding hammer, so that the operation is more flexible.

Referring to fig. 2, anti-slip lines are further processed on the handle 112, and the anti-slip lines can increase the friction force of the handle 112, reduce the probability of the condyle taking device sliding off the hand of a person in the process of taking out the condyle trial, and enable the condyle taking device to be held more stably.

The implementation principle of the knee joint self-locking condyle taking device provided by the embodiment of the application is as follows: in use, a worker directly holds the handle 112 and then presses the second lever 222 toward the direction in which the latch claw 12 is located in the mounting hole 113, and the second lever 222 drives the driving lever 21 to rotate through the auxiliary lever 23, so that the two latch claws 12 are pushed to rotate around the hinge shaft opposite to the connecting lever 111, and the opening between the two latch claws 12 is enlarged. Then, the two locking claw 12 are directly placed on two sides of the trial condyle, then the pushing force applied to the second lever 222 is released, and the second lever 222 is driven to move in the direction away from the locking claw 12 under the action of the locking spring 24, so that an opening between the two locking claw 12 is reduced, and the automatic clamping of the trial condyle is realized. The opening size of the locking claw 12 is adjusted at the position of the locking claw 12 close to the trial condyle in a manual mode without a worker, so that the operation is very simple, and the operation time is greatly shortened.

And compare current condyle ware of getting, current condyle ware of getting needs the manual work to twist adjusting bolt 25 to carry out the centre gripping to the test condyle, will lead to the centre gripping unstable when twisting too rarely, will extrude the indentation on the test condyle surface when twisting excessively, causes the destruction to the test condyle, after taking out the test condyle, still need reprocess the test condyle, increase extra cost. The application clamps the test condyle by the self elasticity of the locking spring 24, the clamping force depends on the elasticity of the locking spring 24, so that the test condyle is not damaged by indentation while the stable clamping is ensured, the test condyle is not required to be reprocessed after being taken out, the structure and the strength of the test condyle are not influenced, and the additional cost is avoided.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides a knee joint auto-lock is got condyle device which characterized in that: the condyle taking device comprises a condyle taking device body (1) and a control assembly (2) for controlling the condyle taking device to clamp or loosen a trial condyle, wherein the condyle taking device body (1) comprises a force application rod (11) and two lock hook claws (12) hinged to the force application rod (11), the two lock hook claws (12) are positioned on the same side of the force application rod (11), an opening for clamping the trial condyle is formed at one end of the two lock hook claws (12) away from the force application rod (11), the control assembly (2) is used for controlling the opening size of the two lock hook claws (12), and the control end of the control assembly (2) is positioned at one side of the force application rod (11) away from the lock hook claws (12);

the force application rod (11) comprises a connecting rod (111) for installing the locking hook claws (12) and a handle (112) vertically fixedly connected to the side wall of the connecting rod (111), and the handle (112) is positioned at one side of the connecting rod (111) away from the openings of the two locking hook claws (12);

the handle (112) is positioned between the two latch hook claws (12);

the control assembly (2) comprises two driving rods (21) hinged to two opposite sides of the locking claw (12) and an operating rod (22) hinged to two ends of the driving rods (21) away from one end of the locking claw (12), one end of the handle (112) away from the connecting rod (111) is provided with a mounting hole (113) communicated to one side of the connecting rod (111) away from the handle (112), the mounting hole (113) is used for the operating rod (22) to penetrate, and one end of the operating rod (22) away from the locking claw (12) penetrates through the mounting hole (113) and extends to the outside of one end of the handle (112) away from the connecting rod (111).

2. The knee self-locking condyle taking device of claim 1, wherein: the operation rod (22) comprises a first rod (221) hinged between the two locking hook claws (12) and a second rod (222) fixedly connected with the first rod (221) and far away from one end of the locking hook claw (12), the circumference of the second rod (222) is larger than that of the first rod (221), the installation hole (113) comprises a first hole (1131) formed in the handle (112) and close to one end of the locking hook claw (12) and used for the first rod (221) to penetrate through, and a second hole (1132) formed in the handle (112) and far away from one end of the locking hook claw (12) and used for the second rod (222), a stepped step surface is formed at the joint of the first hole (1131) and the second hole (1132), a locking spring (24) is sleeved on the first rod (221), the locking spring (24) is located in the second hole (1132), and the other end of the locking spring (24) abuts against the first end (221) and faces the first end (221).

3. The knee self-locking condyle taking device of claim 2, wherein: an operating head (223) is fixedly connected to one end of the second rod (222) away from the first rod (221).

4. A knee self-locking condyle taking device in accordance with any one of claims 1-3, wherein: one end of each locking hook claw (12) far away from the force application rod (11) is fixedly connected with a clamping hook (121), and the clamping hooks (121) are positioned on one opposite side of the two locking hook claws (12).

5. The knee self-locking condyle taking device of claim 1, wherein: the handle (112) is provided with anti-skid patterns.