CN216933367U - A operation auxiliary device that is used for inboard patellofemoral ligament to rebuild art - Google Patents
A operation auxiliary device that is used for inboard patellofemoral ligament to rebuild art Download PDFInfo
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- CN216933367U CN216933367U CN202123380278.0U CN202123380278U CN216933367U CN 216933367 U CN216933367 U CN 216933367U CN 202123380278 U CN202123380278 U CN 202123380278U CN 216933367 U CN216933367 U CN 216933367U
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Abstract
The embodiment of the invention discloses an operation auxiliary device for reconstruction of an inner patellofemoral ligament, which comprises a patella stabilizing unit and a patella tunnel guide unit, wherein the patella stabilizing unit comprises a cross beam, a first stabilizing rod and a second stabilizing rod, the cross beam is provided with a distance scale mark, the first stabilizing rod is integrally formed at one end of the cross beam, the second stabilizing rod is connected to the cross beam in a sliding manner, the patella tunnel guide unit comprises a first sliding block, an arc-shaped sliding rail, a positioning needle and a hollow sleeve, the first sliding block is connected to the cross beam in a sliding manner, the top end of the arc-shaped sliding rail is connected to the first sliding block in a sliding manner along the vertical direction, the positioning needle is fixed at the top end of the arc-shaped sliding rail, the hollow sleeve is connected to the arc-shaped sliding rail in a sliding manner, the bottom end of the positioning needle and the central point of the arc-shaped sliding rail are both located on the central axis of the hollow sleeve, and the arc-shaped sliding rail is provided with an angle scale mark. The invention can accurately position the patellar bone path in the operation, and avoids the problems of bone path deviation and the like.
Description
Technical Field
The embodiment of the invention relates to the technical field of medical auxiliary instruments, in particular to an operation auxiliary device for an inner patellofemoral ligament reconstruction operation.
Background
Currently, an effective patella tunnel positioning method or device is clinically lacked, and in some obese patients, due to swelling of soft tissues around the knee joint, the medial superior patella 1/3 is difficult to position through a minimally invasive incision in the operation, so that accurate positioning of the patella tunnel is more difficult. There is the research discovery because the kneecap tunnel location is inclined preceding, the angle is too big in the art, causes postoperative kneecap fracture incidence to increase, forces some students to adopt the inclined form bone way that the diameter is littleer for seeking to reduce postoperative kneecap fracture's incidence, nevertheless has increased the appearance of complications such as postoperative infection in order to reach accurate location kneecap tunnel in the art and have had to enlarge the incision, causes bigger operation wound.
Disclosure of Invention
Therefore, the embodiment of the invention provides a surgical auxiliary device for reconstruction of a medial patellofemoral ligament, which is used for solving the problem of difficulty in positioning a patella tunnel in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to an embodiment of the present invention, a surgical assistance device for medial patellofemoral ligament reconstruction includes:
the patella stabilizing unit comprises a cross beam, a first stabilizing rod and a second stabilizing rod, wherein a distance scale mark is arranged on the cross beam, the first stabilizing rod and the second stabilizing rod are both arranged vertical to the cross beam, the top end of the first stabilizing rod is integrally formed at one end of the cross beam, and the top end of the second stabilizing rod is arranged at the other end of the cross beam and is connected to a rod body of the cross beam in a sliding manner, so that the patella stabilizing unit is of an Jiong type structure;
patella tunnel guide unit, patella tunnel guide unit includes first slider, arc slide rail, pilot pin and hollow sleeve, sliding connection is on the body of rod of crossbeam between first stabilizer bar and second stabilizer bar for first slider, the arc slide rail is the perpendicular setting of different face with patella stabilizing unit, and vertical direction sliding connection is followed on first slider on the top of arc slide rail, the pilot pin is fixed on the top of arc slide rail in the below of crossbeam, and the setting of the perpendicular crossbeam of pilot pin, hollow sleeve is on the rail body of arc slide rail in the bottom sliding connection of arc slide rail, makes the bottom of pilot pin and the central point of arc slide rail all be located hollow sheathed tube center axis, wherein, be equipped with angle scale sign on the arc slide rail.
Furthermore, a second sliding block is integrally formed at the top end of the second stabilizer bar, a second sliding hole for the cross beam to pass through is formed in the second sliding block in a matched mode, a second knob is arranged on the outer side of the second sliding block, and a second threaded hole communicated with the second sliding hole is formed in the wall of the second sliding block, so that the second knob is in threaded connection with the second threaded hole.
Furthermore, the bottom end of the first stabilizer bar is bent towards the inner side of the patella stabilizing unit to form a supporting end part, a fixing cone for contacting the patella pole position is integrally formed on the end surface of the supporting end part, and the bottom end structure of the second stabilizer bar is consistent with that of the first stabilizer bar.
Furthermore, the top end of the arc-shaped slide rail is bent upwards along the vertical direction to form an adjusting rod, the adjusting rod is perpendicular to the cross beam and is connected to the first sliding block in a sliding mode along the vertical direction.
Furthermore, the first slider is provided with a first sliding hole for the cross beam to pass along the horizontal direction in a matched manner, and a fourth sliding hole for the adjusting rod to pass along the vertical direction in a matched manner, the second knob is arranged on the outer side of the first slider, a first threaded hole communicated with the first sliding hole is formed in the block wall of the first slider, the first knob is connected into the first threaded hole in a threaded manner, the fourth knob is arranged on the outer side of the first slider, a fourth threaded hole communicated with the fourth sliding hole is formed in the block wall of the first slider, and the fourth knob is connected into the fourth threaded hole in a threaded manner.
Furthermore, the joint of the top end of the arc-shaped sliding rail and the adjusting rod is fixedly connected with a positioning block on the inner side of the arc-shaped sliding rail, and the needle body of the positioning needle is fixedly connected to the positioning block.
Furthermore, a third sliding block is arranged on the arc-shaped sliding rail, a third sliding hole for the arc-shaped sliding rail to pass through in an arc-shaped direction in a matched mode and a fifth sliding hole for the hollow sleeve to pass through in a matched mode are formed in the third sliding block, a third knob is arranged on the outer side of the third sliding block, a third threaded hole communicated with the third sliding hole is formed in the wall of the third sliding block, the third knob is connected into the third threaded hole in a threaded mode, a fifth knob is further arranged on the outer side of the third sliding block, a fifth threaded hole communicated with the fifth sliding hole is formed in the wall of the third sliding block, and the fifth knob is connected into the fifth threaded hole in a threaded mode.
Furthermore, a pore passage for a drill bit to enter and penetrate out is formed in the hollow sleeve along the central axis.
The embodiment of the invention has the following advantages: the patella tunnel guide unit is combined with the patella stabilizing unit, so that the problem that the patella tunnel is difficult to position is solved, the problem that the patella shakes in the process of making the patella tunnel is reduced, the loss of positioning can be minimized, the device disclosed by the invention is used, the skin does not need to be cut in a large range in an operation to expose the patella, the establishment of the patella tunnel can be completed only by 1-2 minimally invasive incisions of 0.5cm, the patella tunnel can be accurately positioned in the operation by applying the patella tunnel guide unit disclosed by the invention, the problems of deviation of the patella tunnel and the like are avoided, the success rate of the operation can be improved, and the incidence rate of complications of postoperative patella fracture can be remarkably reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic overall structural diagram of a surgical assistance device for medial patellofemoral ligament reconstruction provided in an embodiment of the present invention;
fig. 2 is a front view of a surgical aid for medial patellofemoral ligament reconstruction provided in accordance with an embodiment of the present invention;
fig. 3 is a side view of a patella tunnel guide unit of a surgical assistance device for medial patellofemoral ligament reconstruction provided by an embodiment of the present invention.
In the figure: 1. a patella stabilization unit; 11. a cross beam; 12. a first stabilizer bar; 13. a second stabilizer bar; 14. a second slider; 15. a second knob; 16. a support end portion; 17. fixing the cone; 2. a patella tunnel guide unit; 21. a first slider; 22. an arc-shaped slide rail; 23. a positioning pin; 24. a hollow sleeve; 25. adjusting a rod; 26. a first knob; 27. a fourth knob; 28. positioning blocks; 29. a third slider; 3. a third knob; 4. and a fifth knob.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, an embodiment of the present invention provides a surgical auxiliary device for medial patellofemoral ligament reconstruction, including a patella stabilizing unit 1 and a patella tunnel guiding unit 2, which are specifically configured as follows:
the patella stabilization unit 1 includes a cross beam 11, a first stabilization rod 12, and a second stabilization rod 13. The crossbeam 11 is provided with interval scale marks. The first stabilizer bar 12 and the second stabilizer bar 13 are both perpendicular to the cross beam 11, and the top end of the first stabilizer bar 12 is integrally formed on one end of the cross beam 11, and the top end of the second stabilizer bar 13 is located at the other end of the cross beam 11 and is slidably connected to the rod body of the cross beam 11, so that the patella stabilizing unit 1 forms an Jiong-shaped structure. The second slider 14 is integrally formed at the top end of the second stabilizer bar 12, the second slider 14 is provided with a second sliding hole for the cross beam 11 to fit through, and the second stabilizer bar 13 can be adjusted to slide on the cross beam 11 in a reciprocating manner by the arrangement of the second slider 14. A second knob 15 is further arranged on the outer side of the second slider 14, and a second threaded hole communicated with the second sliding hole is formed in the block wall of the second slider 14, so that the second knob 15 is in threaded connection with the second threaded hole. With the arrangement of the above structure, after the second stabilizer bar 13 is moved to a specified position, the second slider 14 can be locked on the cross beam 11 by the second knob 15, so as to lock the position of the second stabilizer bar 13.
Preferably, the bottom end of the first stabilizer bar 12 is bent toward the inside of the patella stabilization unit 1 to form a support end portion 16, and a fixing cone 17 for contacting the patella pole is integrally formed on the end surface of the support end portion 16, wherein the bottom end structure of the second stabilizer bar 13 is identical to the bottom end structure of the first stabilizer bar 12. With this arrangement, the first stabilizer bar 12 and the second stabilizer bar 13 can be stably held at the upper and lower pole positions of the patella.
As shown in fig. 3, the patella tunnel guide unit 2 includes a first slider 21, an arc-shaped slide rail 22, a positioning pin 23, and a hollow sleeve 24. The first slider 21 is slidably connected to the rod body of the cross member 11 between the first stabilizer bar 12 and the second stabilizer bar 13. The arc-shaped sliding rail 22 and the patella stabilizing unit 1 are arranged in a different plane and perpendicular to each other, and the top end of the arc-shaped sliding rail 22 is slidably connected to the first sliding block 21 along the vertical direction. The top end of the arc-shaped slide rail 22 is bent upwards along the vertical direction to form an adjusting rod 25, the adjusting rod 25 is arranged perpendicular to the cross beam 11, and the adjusting rod 25 is connected to the first slide block 21 in a sliding manner along the vertical direction. The first slider 21 has a first slide hole for the cross beam 11 to fit through in the horizontal direction, and a fourth slide hole for the adjustment rod 25 to fit through in the vertical direction. A first knob 26 is arranged on the outer side of the first sliding block 21, and a first threaded hole communicated with the first sliding hole is formed in the block wall of the first sliding block 21, so that the first knob 26 is screwed in the first threaded hole. The first knob 26 and the first slider 21 are matched to enable the arc-shaped slide rail 22 to be adjusted in a reciprocating sliding mode along the cross beam 11, and the position of the arc-shaped slide rail 22 moving horizontally is locked by the first knob 26. In addition, a fourth knob 27 is further provided on the outer side of the first slider 21, and a fourth threaded hole communicating with the fourth slide hole is opened on the block wall of the first slider 21, so that the fourth knob 27 is screwed into the fourth threaded hole. The fourth knob 27 is matched with the first slider 21, so that the arc-shaped slide rail 22 can be adjusted in a reciprocating sliding mode in the vertical direction, and the position of the arc-shaped slide rail 22 which moves vertically is locked by the fourth knob 27.
As described above, the positioning pin 23 is fixed on the top end of the arc-shaped slide rail 22 below the cross beam 11, and the positioning pin 23 is disposed perpendicular to the cross beam 11. Wherein, at the joint of the top end of the arc-shaped slide rail 22 and the adjusting rod 25, a positioning block 28 is fixedly connected to the inner side of the arc-shaped slide rail 22, and the needle body of the positioning needle 23 is fixedly connected to the positioning block 28. The hollow sleeve 24 is connected to the rail body of the arc-shaped slide rail 22 at the bottom end of the arc-shaped slide rail 22 in a sliding manner, so that the bottom end of the positioning needle 23 and the central point of the arc-shaped slide rail 22 are both located on the central axis of the hollow sleeve 24. The arc-shaped slide rail 22 is provided with a third slide block 29, and the third slide block 29 is provided with a third slide hole for the arc-shaped slide rail 22 to pass through along the arc-shaped direction in a matching manner and a fifth slide hole for the hollow sleeve 24 to pass through in a matching manner. The outer side of the third sliding block 29 is provided with a third knob 3, and the block wall of the third sliding block 29 is provided with a third threaded hole communicated with the third sliding hole, so that the third knob 3 is screwed in the third threaded hole. The hollow sleeve 24 can slide and adjust along the arc-shaped slide rail 22 in a reciprocating way through the cooperation of the third knob 3 and the third slide block 29, and the position of the arc-shaped movement of the hollow sleeve 24 is locked by the third knob 3. In addition, a fifth knob 4 is further arranged on the outer side of the third slider 29, and a fifth threaded hole communicated with the fifth sliding hole is formed in the block wall of the third slider 29, so that the fifth knob 4 is screwed in the fifth threaded hole. The hollow sleeve 24 can be adjusted in a reciprocating sliding manner along the central axis direction of the hollow sleeve 24 through the cooperation of the fifth knob 4 and the third slider 29, and the position of the hollow sleeve 24 which moves linearly is locked by the fifth knob 4. Wherein, the hollow sleeve 24 is provided with a pore canal along the central axis for the drill to enter and penetrate out.
Preferably, the arc-shaped slide rail 22 is provided with angle scale marks. The specific forms of the interval scale marks and the angle scale marks are all conventional technical means which can be made for clear measurement by a person skilled in the art under the condition that the structure of the application is clear.
The specific operation process is as follows: the operation process comprises the following steps: before operation, the distance between the upper pole and the lower pole of the patella is measured through imaging data such as CT (computed tomography), the direction of a bone path is simulated by using 3D (three-dimensional) software, and ideal data such as the length of a patella tunnel, the positions of an inlet and an outlet, an included angle between the patella tunnel and the equator of the patella are formulated; the patient in operation takes the supine position, the operation auxiliary device is arranged above the knee joint at the affected side, the fixing cone 17 of the first stabilizing rod 12 is contacted with the upper pole of the patella, the fixing cone 17 of the second stabilizing rod 13 moves towards the lower pole of the patella,
when the fixing cones 17 on the two sides contact the two poles of the patella, the stabilizing rod can be locked through the knob, at the moment, the distance between the fixing cones 17 on the two sides, namely the distance between the two poles of the patella, is calculated to obtain the middle-upper 1/3 point of the patella and is marked on the cross beam, the patella tunnel guide unit 2 is slid to the marked point, and the vertex of the positioning needle 23 (namely the circle center of the arc-shaped sliding rail), the hollow sleeve 24 and the middle-upper 1/3 point on the inner edge of the patella are located on the same plane. At the moment, the arc-shaped sliding rail 22 is moved downwards, the vertex of the positioning needle 23 is contacted with the surface of the patella, namely the outlet of the patella tunnel, the hollow sleeve 24 is slid to the estimated angle of the patella tunnel, and the hollow sleeve 24 is pushed forwards to be contacted with the inner edge of the patella, namely the inlet of the patella tunnel. After confirming that the direction of the bone tunnel and the position of the entrance and the exit are correct, all the components are locked, and at the moment, a drill bit can enter the guide drill to establish the bone tunnel.
The embodiment of the invention combines the patella stabilizing unit 1 and the patella tunnel guide unit 2, thereby not only solving the problem that the patella tunnel is difficult to position, but also reducing the problem that the patella shakes in the process of making the bone path, and the loss of the positioning can be reduced to the minimum.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.
Claims (8)
1. A surgical assistance device for medial patellofemoral ligament reconstruction, the surgical assistance device comprising:
the patella stabilizing unit comprises a cross beam, a first stabilizing rod and a second stabilizing rod, wherein a distance scale mark is arranged on the cross beam, the first stabilizing rod and the second stabilizing rod are both arranged vertical to the cross beam, the top end of the first stabilizing rod is integrally formed at one end of the cross beam, and the top end of the second stabilizing rod is arranged at the other end of the cross beam and is connected to a rod body of the cross beam in a sliding manner, so that the patella stabilizing unit is of an Jiong type structure;
patella tunnel guide unit, patella tunnel guide unit includes first slider, arc slide rail, pilot pin and hollow sleeve, sliding connection is on the body of rod of crossbeam between first stabilizer bar and second stabilizer bar for first slider, the arc slide rail is the perpendicular setting of different face with patella stabilizing unit, and vertical direction sliding connection is followed on first slider on the top of arc slide rail, the pilot pin is fixed on the top of arc slide rail in the below of crossbeam, and the setting of the perpendicular crossbeam of pilot pin, hollow sleeve is on the rail body of arc slide rail in the bottom sliding connection of arc slide rail, makes the bottom of pilot pin and the central point of arc slide rail all be located hollow sheathed tube center axis, wherein, be equipped with angle scale sign on the arc slide rail.
2. A surgical aid for medial patellofemoral ligament reconstruction as in claim 1, wherein: the top end of the second stabilizer bar is integrally formed with a second sliding block, a second sliding hole for the cross beam to penetrate in a matched mode is formed in the second sliding block, a second knob is arranged on the outer side of the second sliding block, a second threaded hole communicated with the second sliding hole is formed in the block wall of the second sliding block, and the second knob is connected in the second threaded hole in a threaded mode.
3. A surgical aid for medial patellofemoral ligament reconstruction as in claim 1, wherein: the bottom end of the first stabilizer bar is bent towards the inner side of the patella stabilizing unit to form a supporting end part, a fixing cone used for contacting the patella pole position is integrally formed on the end face of the supporting end part, and the bottom end structure of the second stabilizer bar is consistent with that of the first stabilizer bar.
4. A surgical aid for medial patellofemoral ligament reconstruction as in claim 1, wherein: the top end of the arc-shaped sliding rail is upwards bent along the vertical direction to form an adjusting rod, the adjusting rod is perpendicular to the cross beam and is connected to the first sliding block in a sliding mode along the vertical direction.
5. A surgical aid for medial patellofemoral ligament reconstruction surgery according to claim 4, wherein: the first slider is provided with a first sliding hole for the cross beam to pass through in a matched mode along the horizontal direction and a fourth sliding hole for the adjusting rod to pass through in a matched mode along the vertical direction, the second knob is arranged on the outer side of the first slider, a first threaded hole communicated with the first sliding hole is formed in the block wall of the first slider, the first knob is connected into the first threaded hole in a threaded mode, the fourth knob is further arranged on the outer side of the first slider, a fourth threaded hole communicated with the fourth sliding hole is formed in the block wall of the first slider, and the fourth knob is connected into the fourth threaded hole in a threaded mode.
6. A surgical aid for medial patellofemoral ligament reconstruction surgery according to claim 4, wherein: the arc slide rail top and the linking department of adjusting the pole have the locating piece in the inboard rigid coupling of arc slide rail, the needle body rigid coupling of pilot pin is on the locating piece.
7. A surgical aid for medial patellofemoral ligament reconstruction as in claim 1, wherein: the arc-shaped sliding rail is provided with a third sliding block, the third sliding block is provided with a third sliding hole for the arc-shaped sliding rail to pass through in a matching mode along the arc direction and a fifth sliding hole for the hollow sleeve to pass through in a matching mode, a third knob is arranged on the outer side of the third sliding block, a third threaded hole communicated with the third sliding hole is formed in the block wall of the third sliding block, the third knob is connected into the third threaded hole in a threaded mode, a fifth knob is further arranged on the outer side of the third sliding block, a fifth threaded hole communicated with the fifth sliding hole is formed in the block wall of the third sliding block, and the fifth knob is connected into the fifth threaded hole in a threaded mode.
8. A surgical aid for medial patellofemoral ligament reconstruction procedures according to claim 1 or 7, wherein: and a pore canal for a drill bit to enter and penetrate out is formed on the hollow sleeve along the central axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123380278.0U CN216933367U (en) | 2021-12-29 | 2021-12-29 | A operation auxiliary device that is used for inboard patellofemoral ligament to rebuild art |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123380278.0U CN216933367U (en) | 2021-12-29 | 2021-12-29 | A operation auxiliary device that is used for inboard patellofemoral ligament to rebuild art |
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| Publication Number | Publication Date |
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| CN216933367U true CN216933367U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123380278.0U Active CN216933367U (en) | 2021-12-29 | 2021-12-29 | A operation auxiliary device that is used for inboard patellofemoral ligament to rebuild art |
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| CN (1) | CN216933367U (en) |
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- 2021-12-29 CN CN202123380278.0U patent/CN216933367U/en active Active
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