CN215534797U

CN215534797U - Knee joint operation guide plate

Info

Publication number: CN215534797U
Application number: CN202121723434.6U
Authority: CN
Inventors: 张荣凯; 郭一伟
Original assignee: Guangzhou Minyi Medical Technology Development Co ltd
Current assignee: Guangzhou Minyi Medical Technology Development Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-01-18
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a knee joint operation guide plate, wherein a first positioning piece and a second positioning piece can be close to or far away from each other along a first direction, the first positioning piece is provided with a first through hole arranged along the first direction, a connecting rod is provided with a second through hole along a second direction, the first through hole and the second through hole are used for placing a Kirschner wire, the connecting rod is provided with a first rotating shaft along the second direction, a support arm is hinged to the connecting rod through the first rotating shaft, and a bone cutting guide hole is formed in the second support arm. A plane is determined according to the second positioning part and the two Kirschner wires. Medical personnel regard as the reference plane who cuts the bone with this plane, readjust support arm and this planar angle to determine the position of cutting the bone, can put into pendulum saw or drill bit and cut the bone guiding hole, utilize the limiting displacement who cuts the bone guiding hole and cut the bone, thereby cut the bone location fast, accurately, and can adapt to the patient of different sizes, the suitability is strong.

Description

Knee joint operation guide plate

Technical Field

The utility model is used in the technical field of medical instruments, and particularly relates to a knee joint operation guide plate.

Background

Knee osteoarthritis is a common disease of the old at present, and common treatment means include knee replacement, barley bud replacement, internal fixation and external fixation operations. Knee joint replacement and single barley replacement are expensive and have great harm to patients, and self tissues are replaced by artificial prostheses, and the tissues have non-restorability. The internal fixation and external fixation operations are to cut the tibia to correct the lower limb force line, and the tissues have recoverability. The high position of the tibia is attached with a plurality of tendons, nerves and blood vessels, so that the requirement for osteotomy is high. The current common osteotomy means is a 3D printing knee joint operation guide plate, but the operation time is long, the cost is high, the universality and the applicability are not available, and the use requirements of patients with different body types can not be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one technical problem in the prior art, and provides a knee joint operation guide plate which can adapt to patients with different body types, can perform osteotomy positioning quickly and accurately, and improves applicability.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a knee joint surgical guide, comprising:

the connecting rod comprises a connecting rod, a supporting arm, a first positioning piece and a second positioning piece, wherein the first positioning piece and the second positioning piece are arranged along a first direction, the first positioning piece is arranged at a first end of the connecting rod, the second positioning piece is arranged at a second end of the connecting rod, the first positioning piece and the second positioning piece can be close to or far away from each other along the first direction, the first positioning piece is provided with a first through hole arranged along the first direction, the connecting rod is provided with a second through hole along a second direction, the first through hole and the second through hole are used for placing a Kirschner wire, the connecting rod is provided with a first rotating shaft along the second direction, the supporting arm is hinged to the connecting rod through the first rotating shaft, the first supporting arm comprises a first supporting arm, a second supporting arm and a second rotating shaft arranged along a third direction, the first supporting arm is hinged to the connecting rod through the first rotating shaft, and the first supporting arm is hinged to the second supporting arm through the second rotating shaft, the second support arm is provided with a bone cutting guide hole.

With reference to the foregoing implementation manners, in some implementation manners of the present invention, the first positioning element includes a screw rod, the first end of the connecting rod is provided with a first threaded hole along a first direction, and the screw rod is in threaded connection with the first threaded hole.

With reference to the foregoing implementation manners, in some implementation manners of the present invention, the second positioning element includes a screw, the second end of the connecting rod is provided with a second threaded hole along the first direction, and the screw is in threaded connection with the second threaded hole.

With reference to the foregoing implementation manners, in some implementation manners of the present invention, the connecting rod has an arc section, a first connecting section and a U-shaped section, which are connected in sequence, the arc section is provided with the first threaded hole, the first connecting section is provided with the second through hole, the U-shaped section includes a second connecting section, a third connecting section and a fourth connecting section, which are connected in sequence to form a U shape, the U-shaped section is connected with the first connecting section through the second connecting section, the bottom of the third connecting section is provided with a fifth connecting section, the second threaded hole is provided in the fifth connecting section, the second connecting section and the fourth connecting section are both provided with a first connecting hole along a second direction, the first arm extends into a space between the second connecting section and the fourth connecting section, and a second connecting hole is provided between the second connecting section and the fourth connecting section, the first rotating shaft sequentially penetrates through the first connecting hole of the second connecting section, the second connecting hole and the first connecting hole of the fourth connecting section to connect the connecting rod and the support arm.

In some implementations, in combination with the above implementations, a first tooth-shaped structure is disposed on a side of the first arm contacting the second connection section, the first tooth-shaped structure is distributed around the second connection hole, a second tooth-shaped structure distributed around the first connection hole is disposed on a side of the second connection section contacting the first arm, and the first tooth-shaped structure and the second tooth-shaped structure are engaged with each other.

With reference to the foregoing implementation manners, in some implementation manners of the present invention, the first arm is provided with scale marks distributed along the circumferential direction, and the second connecting section is provided with an indication mark.

In combination with the above implementations, in some implementations of the utility model, the first spindle includes a second locking screw.

With reference to the foregoing implementation manners, in some implementation manners of the present invention, the osteotomy guiding hole includes a strip-shaped hole or a plurality of round holes distributed at intervals along the length direction of the second support arm.

One of the above technical solutions has at least one of the following advantages or beneficial effects: during the operation, adjust the position of second setting element on first direction X, confirm the position of second setting element and fibula microcephaly according to C arm perspective, readjust the position of first setting element on first direction X in order to fix patient's shank, during the ke shi needle penetrates the human body after corresponding passing first through-hole and second through-hole, reach the purpose of fixed knee joint operation baffle, and then determine a plane according to second setting element and two ke shi needles. Medical personnel regard as the reference plane who cuts the bone with this plane, readjust support arm and this planar angle to determine the position of cutting the bone, can put into pendulum saw or drill bit and cut the bone guiding hole, utilize the limiting displacement who cuts the bone guiding hole and cut the bone, thereby cut the bone location fast, accurately, and can adapt to the patient of different sizes, the suitability is strong.

Drawings

The utility model will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic block diagram of one embodiment of the present invention;

FIG. 2 is a schematic structural view of one embodiment of the connecting rod of FIG. 1;

FIG. 3 is a front view of one embodiment shown in FIG. 1;

FIG. 4 is a top view of the one embodiment shown in FIG. 1;

fig. 5 is an enlarged schematic view at a in fig. 3.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.

In the utility model, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Referring to fig. 1 and 3, an embodiment of the present invention provides a knee joint surgical guide including a connecting rod 1, a support arm 2, a first positioning member 31 and a second positioning member 32 arranged along a first direction X. The first positioning element 31 is mounted at a first end of the connecting rod 1, the second positioning element 32 is mounted at a second end of the connecting rod 1, and both the first positioning element 31 and the second positioning element 32 can be close to or far away from each other along the first direction X. Wherein the second positioning member 32 is used for contacting the lower leg at a position close to the head of the fibula, and the first positioning member 31 is used for contacting the lower leg from the other side of the lower leg, so that the lower leg of the patient is supported from two sides by the first positioning member 31 and the second positioning member 32. The distance between the first positioning piece 31 and the second positioning piece 32 can be correspondingly adjusted according to the body type of the patient, so that the device is suitable for patients with different body types, and the applicability is improved. It will be understood that the first positioning element 31 and the second positioning element 32 are coaxially distributed in the first direction X.

The first positioning element 31 has a first through hole 311 arranged along the first direction X, the connecting rod 1 is provided with a second through hole 11 along the second direction Y, and both the first through hole 311 and the second through hole 11 are used for placing a kirschner wire. The connecting rod 1 is provided with a first rotating shaft 12 along the second direction Y, and the support arm 2 is hinged to the connecting rod 1 through the first rotating shaft 12. The support arm 2 comprises a first support arm 21, a second support arm 22 and a second rotating shaft 23 arranged along the third direction Z, the first support arm 21 is hinged to the connecting rod 1 through the first rotating shaft 12, the second support arm 22 is hinged to the first support arm 21 through the second rotating shaft 23, the second support arm 22 is provided with a bone cutting guide hole 221, and the bone cutting guide hole 221 is used for placing an oscillating saw or a drill bit for bone cutting operation. The third direction Z changes with the rotation of the first arm 21, and here the third direction Z is only used to indicate that the arrangement direction of the second rotating shaft 23 is different from the arrangement directions of the first rotating shaft 12, the first positioning member 31 and the second positioning member 32.

During operation, the position of the second positioning part 32 in the first direction X is adjusted, the positions of the second positioning part 32 and the fibula capitulum are determined according to C-arm perspective, the position of the first positioning part 31 in the first direction X is adjusted to fix the calves of a patient, the Kirschner wires penetrate into a human body after correspondingly penetrating through the first through hole 311 and the second through hole 11, the purpose of fixing the knee joint operation guide plate is achieved, and then a plane is determined according to the second positioning part 32 and the two Kirschner wires. Medical personnel regard as the reference plane who cuts the bone with this plane, readjust support arm 2 and this planar angle, see fig. 4 to determine the position of cutting the bone, can put into with pendulum saw or drill bit and cut bone guiding hole 221, utilize the limiting displacement who cuts bone guiding hole 221 to cut the bone, thereby cut the bone location fast, accurately, and can adapt to the patient of different sizes, the suitability is strong.

Referring to fig. 1 to 3, in some embodiments, the first positioning element 31 includes a screw, the first end of the connecting rod 1 is provided with a first threaded hole 16 along the first direction X, the screw is in threaded connection with the first threaded hole 16, and the screw is rapidly adjusted to be close to or far away from the lower leg of the patient through the threaded connection.

Referring to fig. 1 and 3, in some embodiments, the second positioning member 32 includes a screw, the second end of the connecting rod 1 is provided with a second threaded hole along the first direction X, the screw is in threaded connection with the second threaded hole, and the screw is rapidly adjusted to be close to or far away from the lower leg of the patient through threaded connection. It will be appreciated that the screw has a blunt tip 321 at one end adjacent the body, and that discomfort to the patient is reduced by the contact of the blunt tip 321 with the lower leg of the patient.

It is understood that the first positioning member 31 and the second positioning member 32 can also be adjusted in position in the first direction X by means of rack and pinion fit, snap fit, or the like.

Specifically, referring to fig. 2, the connecting rod 1 has an arc-shaped section 12, a first connecting section 13 and a U-shaped section 14 connected in sequence, the arc-shaped section 12 is provided with a first threaded hole 16, and the first connecting section 13 is provided with a second threaded hole 11. The U-shaped section 14 comprises a second connecting section 141, a third connecting section 142 and a fourth connecting section 143 which are sequentially connected to form a U shape, the U-shaped section 14 is connected with the first connecting section 13 through the second connecting section 141, referring to fig. 1 and 3, the bottom of the third connecting section 142 is provided with a fifth connecting section 15, a second threaded hole is formed in the fifth connecting section 15, and the first threaded hole 16 and the second threaded hole are coaxially arranged in the first direction X, so that the screws and the screws are coaxially distributed.

The second connecting section 141 and the fourth connecting section 143 are both provided with a first connecting hole 140 along the second direction Y, the first arm 21 extends between the second connecting section 141 and the fourth connecting section 143, and a second connecting hole is provided between the second connecting section 141 and the fourth connecting section 143. The first rotating shaft 12 sequentially passes through the first connection hole 140 of the second connection section 141, the second connection hole, and the first connection hole 140 of the fourth connection section 143 to connect the connecting rod 1 and the arm 2. By means of the design of the U-shaped section 14, the stability of connection between the support arm 2 and the connecting rod 1 is improved, and the accuracy and the stability of the operation are improved.

Further, referring to fig. 2, the first arm 21 has a first tooth-shaped structure on a side contacting the second connecting section 141, the first tooth-shaped structure is distributed around the second connecting hole, the second connecting section 141 has a second tooth-shaped structure 144 distributed around the first connecting hole 140 on a side contacting the first arm 21, and the first tooth-shaped structure and the second tooth-shaped structure 144 are engaged with each other. The angle of the first arm 21 is adjusted by the cooperation of the first tooth-shaped structure and the second tooth-shaped structure 144, so that the accuracy of angle adjustment is improved.

Furthermore, referring to fig. 3 and 5, the first arm 21 is provided with scale marks 17 distributed along the circumferential direction, and the second connecting section 141 is provided with indication marks 18, so that the rotation angle of the arm 2 during the adjustment process can be read conveniently, and the operation is convenient.

Further, referring to fig. 1, 3 and 4, the first shaft 12 includes a second locking screw, and after the position between the first arm 21 and the connecting section is adjusted, the locking screw is tightened to fix the position of the arm 2, thereby ensuring stable operation.

Specifically, the osteotomy guiding hole 221 includes a strip-shaped hole or a plurality of round holes distributed at intervals along the length direction of the second support arm 22, the strip-shaped hole can be used for placing an oscillating saw to perform osteotomy operation, and the round holes can be used for placing a drill to perform osteotomy. Wherein, the specific shape and number of the osteotomy guiding holes 221 can be reasonably set according to the requirement of the operation.

In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean 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 utility model. In this specification, the schematic representations of the terms used above do not necessarily refer 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.

The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. A knee joint surgical guide, comprising: the connecting rod comprises a connecting rod, a supporting arm, a first positioning piece and a second positioning piece, wherein the first positioning piece and the second positioning piece are arranged along a first direction, the first positioning piece is arranged at a first end of the connecting rod, the second positioning piece is arranged at a second end of the connecting rod, the first positioning piece and the second positioning piece can be close to or far away from each other along the first direction, the first positioning piece is provided with a first through hole arranged along the first direction, the connecting rod is provided with a second through hole along a second direction, the first through hole and the second through hole are used for placing a Kirschner wire, the connecting rod is provided with a first rotating shaft along the second direction, the supporting arm is hinged to the connecting rod through the first rotating shaft, the first supporting arm comprises a first supporting arm, a second supporting arm and a second rotating shaft arranged along a third direction, the first supporting arm is hinged to the connecting rod through the first rotating shaft, and the second supporting arm is hinged to the first supporting arm through the second rotating shaft, the second support arm is provided with a bone cutting guide hole.

2. The guide plate for knee joint surgery according to claim 1, wherein the first positioning member comprises a threaded rod, the first end of the connecting rod is provided with a first threaded hole along a first direction, and the threaded rod is in threaded connection with the first threaded hole.

3. The knee joint surgery guide of claim 2, wherein the second positioning member comprises a screw, the second end of the connecting rod is provided with a second threaded hole along the first direction, and the screw is in threaded connection with the second threaded hole.

4. The knee joint operation guide plate according to claim 3, wherein the connecting rod has an arc section, a first connecting section and a U-shaped section which are connected in sequence, the arc section is provided with the first threaded hole, the first connecting section is provided with the second through hole, the U-shaped section comprises a second connecting section, a third connecting section and a fourth connecting section which are connected in sequence to form a U shape, the U-shaped section is connected with the first connecting section through the second connecting section, the bottom of the third connecting section is provided with a fifth connecting section, the second threaded hole is provided in the fifth connecting section, the second connecting section and the fourth connecting section are both provided with first connecting holes along a second direction, the first arm extends into a space between the second connecting section and the fourth connecting section, and a second connecting hole is provided between the second connecting section and the fourth connecting section, the first rotating shaft sequentially penetrates through the first connecting hole of the second connecting section, the second connecting hole and the first connecting hole of the fourth connecting section to connect the connecting rod and the support arm.

5. The guide plate for knee joint operation according to claim 4, wherein the first arm is provided with a first tooth-shaped structure at a side contacting with the second connecting section, the first tooth-shaped structure is distributed at the periphery of the second connecting hole, the second connecting section is provided with a second tooth-shaped structure distributed at the periphery of the first connecting hole at a side contacting with the first arm, and the first tooth-shaped structure and the second tooth-shaped structure are meshed.

6. The guide plate for knee joint surgery according to claim 5, wherein the first arm is provided with scale marks distributed along the circumferential direction, and the second connecting section is provided with indicating marks.

7. The knee joint surgical guide of claim 5 or 6, wherein the first pivot includes a second locking screw.

8. The knee joint surgery guide plate according to claim 1, wherein the osteotomy guide hole comprises a strip-shaped hole or a plurality of round holes spaced apart along a length direction of the second arm.