CN218943397U

CN218943397U - Surgical reconstruction sighting device for posterior cruciate ligament rupture

Info

Publication number: CN218943397U
Application number: CN202222833738.9U
Authority: CN
Inventors: 刘建兴
Original assignee: Jiangsu Chuanglikang Medical Equipment Co ltd
Current assignee: Jiangsu Chuanglikang Medical Equipment Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-05-02
Anticipated expiration: 2032-10-26

Abstract

The utility model relates to a rear cruciate ligament rupture operation rebuilds sight, it includes guide handle, locator and stand pipe, and the locator links to each other with the guide handle, and the through-hole has been seted up to the one end that the locator was kept away from to the guide handle, and the through-hole is used for supplying the stand pipe to slide and gomphosis, and the sliding is provided with spacing thimble on the inner wall of through-hole, has seted up a plurality of spacing grooves on the stand pipe, and a plurality of spacing grooves are used for supplying spacing thimble gomphosis, be provided with the guide inclined plane on the spacing thimble, the guide inclined plane is used for the guide pipe to keep away from the one end of guide handle towards the locator to slide, is provided with the elastic component on the guide handle, and the elastic component is used for driving spacing thimble to slide towards the guide pipe, has seted up the mounting groove on the guide handle, and the mounting groove is used for acceping spacing thimble. The application has the effect that the stand pipe is convenient for adjust and is connected stably with the guide handle.

Description

Surgical reconstruction sighting device for posterior cruciate ligament rupture

Technical Field

The application relates to the field of medical instruments, in particular to a reconstruction sighting device for posterior cruciate ligament rupture surgery.

Background

Anterior and posterior cruciate ligaments of knee joint: the knee joint is an important stable structure, is connected between the intercondylar fossa of the femur and the intercondylar eminence of the tibia in a hinged mode, can prevent the tibia from shifting forwards and backwards along the femur, and can also limit the rotation of the tibia. When knee joint is damaged by contact trauma or non-contact, anterior and posterior cruciate ligaments of knee joint are broken, thereby loosening knee joint, and ligament function reconstruction is needed by anterior and posterior cruciate ligament operation.

The utility model application with the publication number of CN108969085A discloses a knee joint front and rear fork ligament repairing, positioning and aiming device, which comprises a main body structure, an aiming device and a guide rod, wherein the main body structure is in sliding connection with the aiming device, a threaded hole is formed in the main body structure, threads are arranged on the middle part of the guide rod, the guide rod is in threaded connection with the main body structure, a cavity is formed in the guide rod, and the cavity is used for allowing a Kirschner wire to pass through.

Aiming at the related technology, the inventor considers that the threaded hole on the main structure can cause abrasion to smooth surfaces at two ends of the guide rod, and meanwhile, the guide rod can also cause abrasion to the protrusions on the inner wall of the threaded hole, so that the connection stability between the guide rod and the main structure is reduced, the guide rod is easy to displace in the operation process, and the overall safety of the operation is reduced.

Disclosure of Invention

In order to enhance the connection stability between the guide rod and the main body structure, the application provides a reconstruction aiming device for posterior cruciate ligament rupture surgery.

The application provides a posterior cruciate ligament rupture operation rebuilds sight adopts following technical scheme:

the utility model provides a rebuild sight of posterior cruciate ligament fracture operation, includes guide handle, locator and stand pipe, the locator links to each other with the guide handle, the through-hole has been seted up to the one end that the locator was kept away from to the guide handle, the through-hole is used for supplying the stand pipe to slide and gomphosis, it is provided with spacing thimble to slide on the through-hole inner wall, a plurality of spacing grooves have been seted up on the stand pipe, a plurality of spacing groove is used for supplying spacing thimble gomphosis, be provided with the direction inclined plane on the spacing thimble, the direction inclined plane is used for the guide pipe to keep away from the one end of guide handle towards the locator to slide, be provided with the elastic component on the guide handle, the elastic component is used for driving spacing thimble to slide towards the stand pipe, the mounting groove has been seted up on the guide handle, the mounting groove is used for acceping spacing thimble.

Through adopting above-mentioned technical scheme, when carrying out the operation, keep away from the one end of guide handle with the locator and paste tight bone tissue, insert the stand pipe in the through-hole, the one end drive stand pipe that the guide handle was kept away from to the locator slides, stand pipe and direction inclined plane butt and extrusion spacing thimble, the elastic component shrink, spacing thimble is kept away from the through-hole center and slides, in the sliding process of stand pipe, spacing thimble is located the mounting groove all the time, slide to the cooperation locator when supporting tight back to bone tissue when the stand pipe, rotate the stand pipe until spacing thimble aligns with the spacing groove, under the effect of elastic component, spacing thimble slides to the gomphosis with the spacing groove, realize that the relative positional relationship of stand pipe and guide handle is fixed. The whole process guide tube has high sliding speed and is convenient to adjust, can be suitable for repairing and positioning the knee joint posterior cruciate ligament of different patients, and has wide application range.

Optionally, be provided with the cooperation inclined plane on the inner wall of spacing groove, the cooperation inclined plane is complementary with the direction inclined plane inclination, the cooperation inclined plane is used for cooperation direction inclined plane direction spacing thimble to keep away from the stand pipe and slides.

Through adopting above-mentioned technical scheme, through the setting of cooperation inclined plane, when the stand pipe slides along the through-hole inner wall, because cooperation inclined plane and direction inclined plane laminating, so the spacing thimble of drive slides towards the mounting groove, and the process of sliding is more smooth and easy, and the user is easy and simple to handle.

Optionally, the one end that the guide arm was kept away from to the guide handle is provided with the guide bar, set up logical groove on the guide bar, logical groove is used for supplying the kirschner wire to pass, the one end that the guide bar is close to the guide arm is big footpath end, the one end that the guide arm was kept away from the guide arm is the path end.

Through adopting above-mentioned technical scheme, through the setting of guide bar, after spacing thimble and guide bar lateral wall butt, continue to keep away from the one end of guide handle towards the locator and promote the stand pipe, but the spacing thimble of guide orientation of guide bar slides towards the mounting groove, further makes the process of sliding of stand pipe more smooth and easy.

Optionally, one end of the guide rod far away from the limiting groove is provided with a fixing claw, and the shape of the fixing claw is matched with the shape of human bone tissue.

Through adopting above-mentioned technical scheme, the fixed jaw can cooperate human skeleton form to fix the sight, has improved the cooperation degree of sight and bone tissue to support tightly bone tissue better, improved the accuracy of follow-up location punching operation.

Optionally, the scale mark has been marked on the stand pipe, the observation groove has been seted up on the guide handle, observation groove and through-hole intercommunication, the observation groove is used for observing the scale mark on the stand pipe.

Through adopting above-mentioned technical scheme, the stand pipe is matched with the kirschner wire that passes the stand pipe to also be provided with the scale on the kirschner wire, the length that the kirschner wire got into bone tissue equals the stand pipe and the one end that the guide handle kept away from the kirschner wire needle point flush scale.

Optionally, a plurality of protrusions are arranged on the guide handle.

Through adopting above-mentioned technical scheme, through bellied setting, increased the frictional force between operating personnel's hand and the direction handle, reduced the possibility that the sight was slipped from operating personnel's hand in the operation in-process.

Optionally, the locator includes locating lever, connecting rod and the locating piece that connects gradually, and the locating piece is located same straight line with the stand pipe, the dovetail has been seted up on the guide handle, the dovetail is used for supplying the locating lever to slide and gomphosis, be provided with the retaining member on the guide handle, the retaining member is used for fixed relative positional relationship between locating lever and the guide handle, the dovetail is located on the circumference of taking the locating piece as the centre of a circle, taking the straight line distance between locating piece and the locating lever as the circumference of radius.

Through adopting above-mentioned technical scheme, through the setting of dovetail for the locating lever is in same position throughout at the in-process locating piece that slides, and the locating piece cooperates the fixed jaw throughout to support tightly bone tissue, has improved the accuracy of the follow-up location punching operation of sight to a certain extent.

Optionally, a positioning claw is disposed on the positioning block.

By adopting the technical scheme, the positioning claw can be used for firmly clamping bone tissues, namely, the relative position relationship between the sighting device and the bone tissues is better fixed, and the accuracy of operation is improved.

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

1. through the cooperation of the limiting thimble and the limiting groove, the sliding speed of the guide tube is high, the guide tube is convenient to adjust, and the guide tube can be suitable for repairing and positioning the knee joint posterior cruciate ligament of different patients and has wide application range;

2. the limiting thimble can be driven to slide towards the mounting groove through the guide inclined plane and the matched inclined plane, so that the sliding process is smoother, and the operation of a user is easy and simple;

3. the fixed claw can be matched with the human skeleton form to fix the sight, so that the matching degree of the sight and bone tissue is improved, the bone tissue is better abutted, and the accuracy of the subsequent positioning and punching operation is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the sight in the embodiment of the present application.

FIG. 2 is a schematic view showing a spacing thimble portion in an embodiment of the present application.

Fig. 3 is an enlarged schematic view of the portion a in fig. 1.

Fig. 4 is a schematic view showing an abutment groove portion in the embodiment of the present application.

FIG. 5 is a schematic diagram showing a dovetail slot portion in an embodiment of the present application.

Reference numerals illustrate: 1. a guide handle; 2. a positioner; 21. a positioning rod; 22. a connecting rod; 23. a positioning block; 3. a guide tube; 4. a through hole; 5. limiting ejector pins; 51. a guide slope; 6. a limit groove; 61. matching with the inclined plane; 7. an elastic member; 8. a mounting groove; 9. a guide rod; 91. a through groove; 10. a fixed claw; 11. an observation groove; 12. a protrusion; 13. a dovetail groove; 14. a locking member; 141. screwing the shaft; 142. a bolt; 143. an abutment block; 144. an abutment groove; 15. a positioning claw; 16. and a fixed block.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a reconstruction sighting device for posterior cruciate ligament rupture surgery. Referring to fig. 1, the reconstruction sight for posterior cruciate ligament rupture surgery comprises a guide handle 1, a positioner 2 and a guide tube 3, wherein the positioner 2 comprises a positioning rod 21, a connecting rod 22 and a positioning block 23 which are integrally formed and sequentially connected. One end of the guide handle 1 is connected with the positioning rod 21, a through hole 4 is formed in the other end of the guide handle 1 in a penetrating mode, and the through hole 4 is used for sliding and embedding the guide tube 3. The guide tube 3 is used for the kirschner wire to pass through, and the center of the guide tube 3 and the center of the positioning block 23 are positioned on the same straight line. During operation, the positioning block 23 is always attached to bone tissue, and the kirschner wire passes through the guide tube 3 and slides towards the positioning block 23 so as to position and punch the bone tissue.

Referring to fig. 2, a mounting groove 8 is formed in the inner wall of the through hole 4, the mounting groove 8 is communicated with the through hole 4, an elastic piece 7 is welded on the inner wall of the mounting groove 8, in the embodiment of the application, the elastic piece 7 is a spring, one end of the spring far away from the inner wall of the mounting groove 8 is welded with a fixed block 16, one end of the fixed block 16 far away from the spring is integrally formed with a limiting thimble 5, and the mounting groove 8 is used for accommodating the fixed block 16 and the limiting thimble 5. When the limit thimble 5 is positioned in the mounting groove 8, the spring is in a compressed state. The limiting thimble 5 is provided with a guide inclined plane 51, one end of the guide inclined plane 51, which is far away from the positioning block 23, is far away from the center of the through hole 4, and one end of the guide inclined plane 51, which is close to the positioning block 23, is close to the center of the through hole 4.

Referring to fig. 1 and 3, a plurality of limiting grooves 6 are formed in the circumferential wall of the guide tube 3 along the diameter direction, the limiting grooves 6 are arranged along the length direction of the guide tube 3, and the limiting grooves 6 are used for embedding the limiting ejector pins 5. The inner wall of the limit groove 6 is provided with a matching inclined plane 61, and the matching inclined plane 61 is complemented with the inclination angle of the guide inclined plane 51.

Referring to fig. 2, a guide rod 9 is integrally formed at one end of the guide tube 3 far away from the guide handle 1, a through groove 91 is formed in the guide rod 9, the through groove 91 is communicated with the center of the guide tube 3, and when in use, a kirschner wire can sequentially pass through the guide tube 3 and the through groove 91 and point to the positioning block 23. The end of the guide rod 9 close to the guide tube 3 is a large-diameter end, and the end of the guide rod 9 far away from the guide tube 3 is a small-diameter end. The end of the guide rod 9 far away from the guide tube 3 is integrally formed with a fixing claw 10, and the shape of the fixing claw 10 is matched with the shape of human bone tissue.

When in operation, the positioning block 23 is abutted against bone tissue, one surface of the guide tube 3 far away from the limiting groove 6 is aligned with one side wall of the limiting thimble 5 on the inner wall of the through hole 4, the guide tube 3 is inserted into the through hole 4 and slides towards the positioning block 23, the outer wall of the guide rod 9 is abutted against the limiting thimble 5, and the side wall of the guide rod 9 is inclined, so that the guide rod 9 can guide the limiting thimble 5 to slide far away from the center of the through hole 4. In the sliding process of the guide tube 3, the limiting thimble 5 is always positioned in the mounting groove 8, when the guide tube 3 slides to be matched with the positioning block 23 to tightly prop against bone tissues, the guide tube 3 is rotated until the limiting thimble 5 is aligned with the limiting groove 6, and under the action of the elastic piece 7, the limiting thimble 5 slides to be embedded with the limiting groove 6, so that the relative position relation between the guide tube 3 and the guide handle 1 is fixed. Meanwhile, after the limit thimble 5 is embedded with the limit groove 6, the guide tube 3 can still slide towards the positioning block 23 for further abutting due to the arrangement of the guide inclined plane 51 and the matching inclined plane 61. The fixing claw 10 can be matched with the human skeleton shape to fix the guide tube 3, namely, the matching degree of the sighting device and bone tissue is improved, so that the bone tissue can be well abutted. After the preparation work is finished, the Kirschner wire sequentially passes through the guide tube 3 and the through groove 91, and the bone tissue is accurately positioned and punched. After the punching is finished, the sighting device is separated from the bone tissue, and then the subsequent operation can be performed. The sliding speed of the guide tube 3 is fast and convenient to adjust in the whole process, and the guide tube can be suitable for repairing and positioning the posterior cruciate ligaments of knee joints of different patients, and has a wide application range.

Referring to fig. 4, the guide tube 3 is matched with the kirschner wire penetrating through the guide tube 3, scale marks are marked on the guide tube 3 and the kirschner wire, an observation groove 11 is formed in the guide handle 1, the observation groove 11 is communicated with the through hole 4, and the observation groove 11 can be used for observing the scale marks on the guide tube 3. In this embodiment of the application, the length that kirschner wire got into bone tissue equals the scale that the one end that guide tube 3 and guide handle 1 kept away from the kirschner wire needle point flushed, and operating personnel accessible observation groove 11 observe the length that kirschner wire got into bone tissue to the precision of operation has been improved.

Referring to fig. 1 and 4, in the embodiment of the present application, the positioning block 23 is in a ring shape, and the center of the ring and the k needle are located on the same line. The positioning block 23 is integrally provided with the positioning claw 15, and the positioning claw 15 can be matched with the fixing claw 10 to better clamp bone tissues, so that the relative position relationship between the positioning block 23 and the bone tissues is better fixed, the sight is not easy to displace with the bone tissues when the operation is performed, and the accuracy of the operation is improved. Meanwhile, in the embodiment of the application, the connecting rod 22 is in an arc-shaped arrangement, and the matching degree of the connecting rod 22 and the part around the knee joint to be driven into the Kirschner wire is extremely high, so that the positioning block 23 is better attached to bone tissues.

Referring to fig. 1 and 5, the guide handle 1 is provided with a dovetail groove 13, and the dovetail groove 13 is used for sliding and embedding the positioning rod 21. The dovetail groove 13 is positioned on the circumference of a circle taking the center of the positioning block 23 as the center of a circle and taking the linear distance between the center of the positioning block 23 and the positioning rod 21 as the radius, namely, the positioning rod 21 is in an arc structure, so that the center position of the positioning block 23 can be kept unchanged when the positioning rod 21 slides in the dovetail groove 13 to adjust the fastening angle, the center of the positioning block 23 is always positioned on the extension line of the central axis of the guide tube 3, and the adjustment of the fastening angle does not influence the positioning operation. In the embodiment of the application, the central angle of the circular arc structure of the positioning rod 21 is 40-65 degrees, and the positioning rod 21 is marked with the scales of 40 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees and 65 degrees, so that an operator can adjust according to the knee joint bone structures of different patients.

Referring to fig. 4 and 5, when the operator adjusts the positioning rod 21 to a proper angle, the positioning rod 21 needs to be fixed to the guide handle 1. The guide handle 1 is provided with a screwing shaft 141, a bolt 142 and an abutting block 143, the guide handle 1 is provided with a threaded hole, the bolt 142 is in threaded connection with the threaded hole, and one end of the bolt 142 is welded with the abutting block 143. The other end of the bolt 142 is welded to the screw shaft 141, and the abutment block 143 is positioned in the dovetail groove 13. The positioning rod 21 is provided with an abutting groove 144, the abutting groove 144 is used for the abutting block 143 to be embedded, when the relative position relation between the positioning rod 21 and the guide handle 1 needs to be fixed, the screwing shaft 141 is screwed, the bolt 142 rotates along the threaded hole until the abutting block 143 abuts against the inner wall of the abutting groove 144, and the fixing between the positioning rod 21 and the guide handle 1 can be completed.

Referring to fig. 1 and 5, the guide handle 1 is provided with a protrusion 12, and the protrusion 12 can increase friction between the hand of the operator and the guide handle 1, so that the possibility that the sight slides off the hand of the operator in the operation process is reduced, and the overall safety of the operation is improved.

The implementation principle of the reconstruction sighting device for posterior cruciate ligament rupture surgery in the embodiment of the application is as follows: through the cooperation between spacing thimble 5 and the spacing groove 6 for the stand pipe 3 slides speed in through-hole 4 faster and the accommodation process is comparatively simple and convenient, in addition after stand pipe 3 supports tightly bone tissue with locating piece 23 cooperation, the relative position relation between stand pipe 3 and the guide handle 1 is fixed, thereby has reduced because stand pipe 3 and guide handle 1 take place the displacement and has led to the possibility that the operation process produced the mistake.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A reconstruction sight for posterior cruciate ligament rupture surgery, which is characterized in that: including guide handle (1), locator (2) and stand pipe (3), locator (2) link to each other with guide handle (1), through-hole (4) have been seted up to one end that locator (2) was kept away from to guide handle (1), through-hole (4) are used for supplying stand pipe (3) to slide and gomphosis, it is provided with spacing thimble (5) to slide on the inner wall of through-hole (4), a plurality of spacing grooves (6) have been seted up on stand pipe (3), a plurality of spacing groove (6) are used for supplying spacing thimble (5) gomphosis, be provided with guide bevel (51) on spacing thimble (5), guide bevel (51) are used for guiding stand pipe (3) to keep away from the one end of guide handle (1) towards locator (2), be provided with elastic component (7) on guide handle (1), elastic component (7) are used for driving spacing thimble (5) to slide towards stand pipe (3), install mounting groove (8) on stand pipe (1) are used for acceping spacing thimble (5).

2. A reconstruction aimer for posterior cruciate ligament rupture surgery according to claim 1, wherein: the inner wall of the limiting groove (6) is provided with a matching inclined plane (61), the matching inclined plane (61) is complementary with the inclination angle of the guide inclined plane (51), and the matching inclined plane (61) is used for matching the guide inclined plane (51) to guide the limiting thimble (5) to slide away from the guide tube (3).

3. A reconstruction aimer for posterior cruciate ligament rupture surgery according to claim 1, wherein: the utility model discloses a novel electric surgical instrument, including guide handle (1), guide bar (9) are provided with to the one end that guide bar (3) kept away from, logical groove (91) have been seted up on guide bar (9), logical groove (91) are used for supplying the kirschner wire to pass, the one end that guide bar (9) is close to guide bar (3) is big footpath end, the one end that guide bar (9) kept away from guide bar (3) is the path end.

4. A reconstruction aimer for posterior cruciate ligament rupture surgery according to claim 3, wherein: one end of the guide rod (9) far away from the limiting groove (6) is provided with a fixing claw (10), and the shape of the fixing claw (10) is matched with the shape of human bone tissue.

5. A reconstruction aimer for posterior cruciate ligament rupture surgery according to claim 1, wherein: the guide tube (3) is marked with scale marks, the guide handle (1) is provided with an observation groove (11), the observation groove (11) is communicated with the through hole (4), and the observation groove (11) is used for observing the scale marks on the guide tube (3).

6. A reconstruction aimer for posterior cruciate ligament rupture surgery according to claim 1, wherein: a plurality of bulges (12) are arranged on the guide handle (1).

7. A reconstruction aimer for posterior cruciate ligament rupture surgery according to claim 1, wherein: the positioning device comprises a positioning rod (21), a connecting rod (22) and a positioning block (23) which are sequentially connected, wherein the positioning block (23) and a guide pipe (3) are positioned on the same straight line, a dovetail groove (13) is formed in the guide handle (1), the dovetail groove (13) is used for enabling the positioning rod (21) to slide and be embedded, a locking piece (14) is arranged on the guide handle (1), the locking piece (14) is used for fixing the relative position relation between the positioning rod (21) and the guide handle (1), and the dovetail groove (13) is positioned on the circumference of a circle taking the positioning block (23) as the center of a circle and taking the straight line distance between the positioning block (23) and the positioning rod (21) as the radius.

8. A reconstruction aimer for posterior cruciate ligament rupture surgery as defined in claim 7, wherein: the positioning block (23) is provided with a positioning claw (15).