CN112370222A

CN112370222A - Self-fixing tibial plateau test mold

Info

Publication number: CN112370222A
Application number: CN202011181615.0A
Authority: CN
Inventors: 解凤宝; 常路路; 史春宝; 吕昌禹; 郝孟娟
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-02-19
Anticipated expiration: 2040-10-29
Also published as: CN112370222B

Abstract

The application relates to a from fixed tibial plateau examination mould belongs to medical instrument technical field, includes: the examination mould body, examination mould body have near-end face and distal end face, and near-end face is fixed to be provided with a plurality of fixed part, and the distal end face is provided with examination pad cooperation groove, is provided with a plurality of guiding hole on the examination pad body. The application provides a from fixed tibial plateau examination mould has the advantage that the simple installation, fixed firm.

Description

Self-fixing tibial plateau test mold

Technical Field

The application relates to the technical field of medical equipment, in particular to a self-fixing tibial plateau test model.

Background

The tibial platform trial model is an instrument for further processing the tibia and selecting a proper prosthesis specification before the prosthesis is installed after the tibia is cut in the joint replacement operation. At present, when the tibial plateau test mold is applied, the tibial plateau test mold needs to be placed on a cut tibial plateau, and then fixing nails are driven into a tibia through fixing holes in the tibial plateau test mold, so that the tibial plateau test mold is fixed. However, in the unicondylar operation, because the opening is small, one or two fixing nails can be driven into the unicondylar operation generally, the tibial plateau trial mold fixing effect is poor, the tibial plateau prosthesis fixing hole position is easy to deviate, and the operation effect is seriously influenced.

Disclosure of Invention

In order to improve the not good problem of fixed effect of tibial plateau examination mould among the correlation technique, this application provides a from fixed tibial plateau examination mould.

The application provides a from fixed tibial plateau examination mould adopts following technical scheme:

a self-fixating tibial plateau trial comprising:

the trial mould body, the trial mould body has near-end face and distal end face, near-end face is fixed and is provided with a plurality of fixed part, the distal end face is provided with trial pad cooperation groove, be provided with the guiding hole that a plurality of plays the guide effect to the bone drill on the trial pad body.

Through adopting above-mentioned technical scheme, tibial plateau examination mould accessible fixed part installs on the tibial plateau after cutting the bone, and the installation of tibial plateau examination mould is firm to the installation of tibial plateau examination mould has been simplified.

Optionally, the fixing part is columnar, and the end of the fixing part is provided with a sharp corner.

Optionally, the fixing part is conical or pyramidal.

Through adopting above-mentioned technical scheme, be convenient for install the tibial plateau examination mould to the tibial plateau after cutting the bone on.

Optionally, the diameter of the fixing part is 2-4 mm, and the height of the fixing part is 2-6 mm.

Through adopting above-mentioned technical scheme, can reduce the damage of fixed part to tibial plateau sclerotin.

Optionally, the plurality of fixing parts are uniformly arranged on the proximal end face of the test die body.

Through adopting above-mentioned technical scheme, the tibial plateau examination mould can be firmly fixed in on the osteotomy face of tibial plateau.

Optionally, the test pad matching groove is provided with an opening, and the opening is positioned on one side of the test mould body close to the front of the human body.

Through adopting above-mentioned technical scheme, be convenient for take out test pad of shin bone platform from test pad cooperation inslot.

Optionally, a force line correction device for assisting in adjusting the thickness of the tibial platform test pad is arranged on the outer side of the opening.

By adopting the technical scheme, the thickness of the tibial platform test pad is convenient to adjust, so that the actual force line of the lower limb after the tibial platform prosthesis is installed is ideally matched with the lower limb.

Optionally, the force line correction device includes a base and a force line rod, the base is mountable on the test model body, a first mounting hole is formed in the base, and the force line rod can be inserted into the first mounting hole.

Through adopting above-mentioned technical scheme, thereby the line of force orthotic devices can install the thickness that is convenient for confirm shin bone platform examination pad on trying the mould body and correct.

Optionally, the base is further provided with a second mounting hole, the force line rod can be inserted into the second mounting hole, and the force line rod can tilt along the length direction of the second mounting hole.

By adopting the technical scheme, the angle deviation of the force line rod relative to the ideal force line of the lower limb can be observed conveniently, so that the optimal thickness of the tibial platform test pad can be determined.

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

1. the fixing parts are arranged on the near end surface of the trial model body, so that the tibial platform trial model can be stably installed on the osteotomy surface of the tibial platform under the condition of small operation space, and the installation process is convenient and fast;

2. through setting up the line of force orthotic devices on trying the mould body, improved the precision and the convenience of line of force orthotic processes.

Drawings

Fig. 1 is a schematic three-dimensional structure of a perspective view of a self-fixating tibial plateau trial of an embodiment of the present application;

FIG. 2 is a schematic three-dimensional view of another perspective of a self-fixating tibial plateau trial of an embodiment of the present application;

fig. 3 is a schematic three-dimensional structure of a self-fixating tibial plateau trial of another embodiment of the present application;

fig. 4 is an exploded view of a self-fixating tibial plateau trial of another embodiment of the present application.

Description of reference numerals: 1. testing the mould body; 11. a fixing member; 12. a test pad fitting groove; 13. a guide hole; 14. an opening; 15. connecting holes; 2. a force line rectification device; 21. a base; 22. a force wire rod; 23. a first mounting hole; 24. a second mounting hole; a connecting rod 25.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Referring to fig. 1 and 2, the embodiment of the present application discloses a self-fixing tibial plateau test model, which includes a test model body 1, wherein the test model body 1 has a proximal end surface and a distal end surface. Wherein, the proximal end face is a lateral surface close to the tibial plateau after the tibial plateau trial mold is installed, and the distal end face is a lateral surface far away from the tibial plateau after the tibial plateau trial mold is installed. The proximal end face of the trial model body 1 is fixedly provided with a plurality of fixing parts 11 for fixing the tibial plateau trial model on the tibial plateau after osteotomy. Be provided with the examination pad cooperation groove 12 that is used for holding tibial plateau examination pad on the distal end face of examination mould body 1, be provided with a plurality of guiding hole 13 in the examination pad cooperation groove 12, guiding hole 13 plays the guide effect to the bone drill drilling on tibial plateau. The application provides a from fixed tibial plateau examination mould through setting up fixed part 11 at near end face, need not to squeeze into the staple through the fixed orifices and fix tibial plateau examination mould, has simplified the fixed step of tibial plateau examination mould, has improved the steadiness of tibial plateau examination mould installation.

Referring to fig. 1, the fixing member 11 may have a cylindrical shape, and particularly, may have a cylindrical or prismatic shape, and a sharp corner may be provided at an end of the fixing member 11, so that the fixing member 11 is easily driven into the tibia. In order to improve the ease of driving the fixation component 11 into the tibia, the fixation component 11 may also be provided with a conical or pyramidal shape.

In order to reduce the damage of the fixing component 11 to the tibia, the diameter of the fixing component 11 can be set to be 2-4 mm, and the height of the fixing component 11 can be set to be 2-6 mm. For example, when the fixing member 11 is a columnar structure having a sharp corner, the diameter thereof may be set to 2mm and the height thereof may be set to 3mm, or the diameter of the fixing member 11 may be set to 3mm and the height thereof may be set to 5 mm. The shape and size of the fixing member may be selected by those skilled in the art as needed, and is not particularly limited herein. Thus, the fixing member 11 is not only easy to drive into the tibia, but also can reduce the influence on the bone of the tibia due to the small size of the fixing member 11.

The fixing parts 11 are uniformly arranged on the proximal end face of the test die body 1. For example, referring to fig. 1, the number of the fixing members 11 may be three, and the three fixing members 11 are uniformly disposed on the proximal end surface of the test mold body 1, so as to ensure the fixing effect of the test mold body 1. The plurality of fixing members 11 may be uniformly arranged on the proximal end surface of the test die body 1, but not limited to this arrangement, and those skilled in the art may select the number and arrangement of the fixing members 11 according to actual needs, which is not specifically limited herein.

Referring to fig. 1, a test pad fitting groove 12 is provided on the distal end surface of the test mold body 1, and the shape of the test pad fitting groove 12 matches the shape of the tibial platform test pad. The test pad matching groove 12 is located in the middle of the far-end face of the test die body 1, when the test pad matching groove is used, the tibial platform test pad can be directly placed in the test pad matching groove 12, operation is simple and convenient, displacement cannot occur in the horizontal direction due to the tibial platform test pad, and positioning accuracy is high.

After the tibial platform test pad is used, in order to facilitate taking out the tibial platform test pad from the test pad matching groove 12, an opening 14 is further formed in the test pad matching groove 12, and a surgical instrument can stretch into the test pad matching groove 12 through the opening 14 to lift up the tibial platform test pad for taking out. Due to the restriction of the operation space, the opening 14 of the test pad fitting groove 12 may be disposed on the side of the test mold body 1 near the front of the human body for the convenience of operation, and the opening 14 penetrates through the side wall of the test pad fitting groove 12.

Referring to fig. 3 and 4, the self-fixating tibial plateau trial further includes a force line orthotic device 2, the force line orthotic device 2 being disposed outside the opening 14 of the trial pad mating slot 12. Specifically, power line orthotic devices 2 includes base 21 and power line pole 22, and the one end that base 21 is close to examination mould body 1 is provided with connecting rod 25, and the opening 14 both sides of examination pad cooperation groove 12 are provided with connecting hole 15 on examination mould body 1, and connecting rod 25 can peg graft in connecting hole 15 to install base 21 on examination mould body 1. The base 21 is provided with a first mounting hole 23, the first mounting hole 23 is a circular through hole with an axis perpendicular to the upper surface of the test die body 1, and the force line rod 22 can be inserted into the first mounting hole 23. In the use process, through observing the inclination degree between the force line rod 22 and the ideal force line of the lower limbs of the human body, reference can be provided for adjusting the thickness of the tibial platform test pad, and therefore the actual force line of the lower limbs after the tibial platform prosthesis is installed is ensured to be in the best position.

After the force line rod 22 is installed in the first installation hole 23, a certain distance exists between the force line rod 22 and the lower limbs of the human body, so that the force line rod 22 is not easy to observe when the deviation between the ideal force line of the lower limbs is small. Therefore, referring to fig. 4, the base 21 is further provided with a second mounting hole 24, the second mounting hole 24 is a strip-shaped hole, the longitudinal direction of the second mounting hole 24 coincides with the longitudinal direction of the base 21, and the center line of the second mounting hole 24 along the longitudinal direction is directed to the axis of the first mounting hole 23. The force line rod 22 can be inserted into the second mounting hole 24, and the force line rod 22 can be inclined along the length direction of the second mounting hole 24 by pulling the force line rod 22, so that the end part of the force line rod 22 is close to or far away from the lower limb of a human body, and the deviation between the force line rod 22 and the ideal force line of the lower limb can be observed conveniently.

The application provides a from fixed tibial plateau examination mould's theory of operation does:

in the process of tibial plateau unicondylar operation, after the osteotomy operation of tibial plateau unicondylar is completed, a tibial plateau test mold is placed on the osteotomy surface, an external tool is adopted to drive the tibial plateau test mold into the tibial plateau after osteotomy, and a hole for installing a tibial plateau prosthesis is drilled along the guide hole 13 by using a bone drill. And then inserting a base 21 of the force line correction device 2 on the test die body 1, inserting a force line rod 22 in a first mounting hole 23 or a second mounting hole 24, observing the angle deviation between the force line rod 22 and the ideal force line of the lower limb, and selecting a tibial platform test pad with a proper thickness according to the angle deviation between the force line rod 22 and the ideal force line of the lower limb, so that the actual force line of the lower limb is matched with the ideal force line of the lower limb after the tibial platform prosthesis is finally installed.

The application provides a from fixed tibial plateau examination mould sets up fixed part 11 through the fixed near-end face at examination mould body 1 for the tibial plateau examination mould need not to adopt external fixation nail to fix when the installation, has simplified the installation procedure of tibial plateau examination mould, has improved the fixed effect of tibial plateau examination mould. Simultaneously, line of force orthotic devices 2 sets up on examination mould body 1, need not to carry out the line of force through outside device and corrects, and the degree of coordination of line of force orthotic devices 2 and examination mould body 1 is high for the correction process of line of force is more convenient, accurate.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A self-fixating tibial plateau trial comprising: the bone drill jig comprises a jig body (1), wherein the jig body (1) is provided with a near end face and a far end face, a plurality of fixing parts (11) are fixedly arranged on the near end face, a jig pad matching groove (12) is arranged on the far end face, and a plurality of guide holes (13) which play a role in guiding a bone drill are arranged on the jig body (1).

2. The trial of claim 1 wherein the fixation member (11) is cylindrical and the end of the fixation member (11) has a sharp corner.

3. The self-fixating tibial plateau trial of claim 1 wherein the fixation component (11) is conical or pyramidal.

4. The trial of the self-fixating tibial plateau of claim 2 or 3, wherein the diameter of the fixation part (11) is 2-4 mm and the height of the fixation part (11) is 2-6 mm.

5. The trial of the self-fixating tibial plateau of claim 1, wherein the plurality of fixation elements (11) are evenly arranged on the proximal end surface of the trial body (1).

6. The trial tibial plateau of claim 1 wherein the trial mating groove (12) has an opening (14), the opening (14) being located on a side of the trial body (1) adjacent to the front of the human body.

7. The self-fixating tibial plateau trial of claim 6 wherein a force line correction device (2) for assisting in adjusting the thickness of the tibial plateau trial pad is provided outside the opening (14).

8. The trial of the self-fixing tibial plateau of claim 7, wherein the force line correction device (2) comprises a base (21) and a force line rod (22), the base (21) is mountable on the trial body (1), the base (21) is provided with a first mounting hole (23), and the force line rod (22) is insertable in the first mounting hole (23).

9. The trial of claim 8, wherein the base (21) further comprises a second mounting hole (24), the force wire rod (22) can be inserted into the second mounting hole (24), and the force wire rod (22) can tilt along the length of the second mounting hole (24).