Quick positioning type shoulder joint surgery guide plate auxiliary tool

Abstract

The utility model discloses a quick positioning type shoulder joint operation guide plate auxiliary instrument relates to shoulder joint operation auxiliary technical field, include: cortex arm and limit mechanism, the top and bottom of cortex arm all are fixedly connected with connecting strip a, one end of connecting strip a is fixedly connected with handle. The quick positioning type shoulder joint operation guide plate auxiliary instrument, through the positioning arm is inserted to the inside of the connecting sleeve, when the inclined plane of positioning arm end block contacts the limit board, the limit board will move, and the spring of one side is extruded, and the slide bar will guide the limit board and limit, when the block separates and the contact of limit board, the spring will reset, and push limit board and block and carry out the clamping, complete the connection of positioning arm and connecting strip a, after fixing, can insert the kirschner wire into the positioning hole a, insert the intramedullary positioning needle into the positioning hole b, can complete the positioning of guide plate auxiliary instrument.

Description

Technical Field

[0001] This utility model relates to the field of shoulder joint surgery assistance technology, specifically a rapid positioning shoulder joint surgery guide auxiliary device. Background Technology

[0002] Total shoulder arthroplasty remains the best treatment for end-stage shoulder disease and severe trauma. Proper placement of the humeral prosthesis is a decisive factor for good short- and long-term surgical outcomes, regardless of whether it is a conventional antegrade or retrograde total shoulder arthroplasty. For the humeral prosthesis, accurate placement within the medullary canal is also a crucial step. During surgery, a guide plate or similar device is needed to assist in the accurate placement of the humeral prosthesis.

[0003] For example, the shoulder joint replacement humeral side preparation guide device in publication number CN109745098B, with the assistance of this device, can conveniently and quickly realize the preparation of the humeral side bone surface of the shoulder joint and the placement of the prosthesis, avoiding complications such as fat embolism caused by initial intramedullary positioning. It can also easily change the extramedullary positioning to intramedullary positioning by connecting the intramedullary positioning arm. The medial and lateral cortical arms of the body have scales, which can be used to easily position it in the central part of the humerus. The guide device can be fixed to the humerus with Kirschner wires through the fixation holes to prevent positioning deviation caused by handle displacement.

[0004] When using the aforementioned shoulder joint surgical guide assist device, the positioning arm needs to be connected to the connecting strip to complete the wearing of the guide assist device. When fixing it, the connecting rope at the end of the positioning arm needs to be wrapped and fixed to the end of the connecting strip a. This fixing method is relatively cumbersome to operate. Utility Model Content

[0005] The purpose of this invention is to provide a quick-positioning shoulder joint surgical guide auxiliary device to solve the problem mentioned in the background art that existing shoulder joint surgical guide auxiliary devices are not convenient for connection and fixation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rapid positioning shoulder joint surgical guide auxiliary device, comprising: a cortical arm and a limiting mechanism, wherein a connecting strip a is fixedly connected to both the top and bottom of the cortical arm, and a handle is fixedly connected to one end of the connecting strip a.

[0007] A connecting strip b is fixedly connected to the side of the leather arm away from the connecting strip a. A positioning arm is fixedly connected to the top of the connecting strip b. A limiting mechanism is provided on one side of the connecting strip a. The limiting mechanism includes a connecting sleeve fixedly connected to one side of the connecting strip a. A sliding rod is slidably connected inside the connecting sleeve. A limiting plate is fixedly connected to one end of the sliding rod. A locking block is fixedly connected to one end of the positioning arm.

[0008] Preferably, a head-holding arm is fixedly connected to one side of the connecting strip a, and one end of the head-holding arm is fixed to the connecting strip b.

[0009] Preferably, a head recess arm is fixedly connected to the top of the connecting strip a on the side away from the head arm, and a positioning hole a is provided in the middle of the positioning arm.

[0010] Preferably, the connecting strip a has a positioning hole b in the middle, the leather arm has a scale mark on one side, and the slide rod is fitted with a spring on the outside.

[0011] Preferably, one end of the spring abuts against the limiting plate, and the other end of the spring abuts against the connecting sleeve.

[0012] Preferably, one end of the slide rod is fixedly connected to a connecting block, the connecting block has a through groove inside, and the through groove is slidably connected to the lever.

[0013] Preferably, the top of the lever is movably connected to the connecting sleeve via a pivot, the limiting plate is L-shaped, and one end of the lever is arc-shaped.

[0014] Compared with existing technologies, the advantages of this rapid positioning shoulder joint surgical guide aid are as follows: When connecting the positioning arm and connecting strip a, the positioning arm is inserted into the connecting sleeve. When the inclined surface of the locking block at the end of the positioning arm contacts the limiting plate, the limiting plate moves and compresses a spring on one side. The sliding rod guides and limits the limiting plate. When the locking block disengages from the limiting plate, the spring resets and pushes the limiting plate to engage with the locking block, completing the connection between the positioning arm and connecting strip a. After fixing, Kirschner wires can be inserted into positioning hole a, and intramedullary positioning needles can be inserted into positioning hole b to complete the positioning of the guide aid. Thus, the above operations facilitate the connection of the shoulder joint surgical guide aid and its positioning on the shoulder joint. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a three-dimensional schematic diagram of the leather arm of this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the limiting mechanism of this utility model;

[0018] Figure 4 This is a three-dimensional cross-sectional view of the connecting sleeve of this utility model.

[0019] In the diagram: 1. Leather arm; 2. Connecting strip a; 3. Handle; 4. Connecting strip b; 5. Positioning arm; 6. Limiting mechanism; 601. Connecting sleeve; 602. Slide rod; 603. Spring; 604. Limiting plate; 605. Locking block; 606. Connecting block; 607. Through groove; 608. Lever; 7. Headrest arm; 8. Head recess arm; 9. Positioning hole a; 10. Positioning hole b; 11. Scale mark. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This utility model provides a technical solution: a rapid positioning shoulder joint surgical guide auxiliary device, comprising: a cortical arm 1 and a limiting mechanism 6, wherein a connecting strip a2 is fixedly connected to both the top and bottom of the cortical arm 1, and a handle 3 is fixedly connected to one end of the connecting strip a2.

[0022] A connecting bar b4 is fixedly connected to the side of the leather arm 1 away from the connecting bar a2. A positioning arm 5 is fixedly connected to the top of the connecting bar b4. A limiting mechanism 6 is provided on one side of the connecting bar a2. The limiting mechanism 6 includes a connecting sleeve 601 fixedly connected to one side of the connecting bar a2. A sliding rod 602 is slidably connected inside the connecting sleeve 601. A limiting plate 604 is fixedly connected to one end of the sliding rod 602. A locking block 605 is fixedly connected to one end of the positioning arm 5. A head-holding arm 7 is fixedly connected to one side of the connecting bar a2. One end of the head-holding arm 7 is fixed to the connecting bar b4. A head recess arm 8 is fixedly connected to the top of the connecting bar a2 away from the head-holding arm 7. A positioning hole a9 is opened in the middle of the positioning arm 5. A positioning hole b10 is opened in the middle of the connecting bar a2. A scale mark 11 is provided on one side of the mass arm 1, and a spring 603 is sleeved on the outside of the slide rod 602; one end of the spring 603 abuts against the limiting plate 604, and the other end of the spring 603 abuts against the connecting sleeve 601; a connecting block 606 is fixedly connected to one end of the slide rod 602, and a through groove 607 is opened inside the connecting block 606, and the through groove 607 is slidably connected to the lever 608; the top of the lever 608 is movably connected to the connecting sleeve 601 through a rotating shaft, the limiting plate 604 is L-shaped, one end of the lever 608 is arc-shaped, and a sliding groove matching the slide rod 602 is opened inside the connecting sleeve 601. The slide rod 602 and the connecting sleeve 601 form a sliding structure, and the lever 608 and the connecting sleeve 601 form a rotating structure through a rotating shaft.

[0023] In practical implementation, this rapid positioning shoulder joint surgical guide assistive device, when connecting the positioning arm 5 and the connecting strip a2, involves inserting the positioning arm 5 into the connecting sleeve 601. When the inclined surface of the end block 605 of the positioning arm 5 contacts the limiting plate 604, the limiting plate 604 moves and compresses the spring 603 on one side. The slide rod 602 guides and limits the limiting plate 604. When the block 605 disengages from the limiting plate 604, the spring 603 resets and pushes the limiting plate 604 to engage with the block 605, completing the connection between the positioning arm 5 and the connecting strip a2. After fixing, a Kirschner wire can be inserted into the positioning hole a9 to insert the intramedullary... The positioning pin is inserted into the positioning hole b10 to complete the positioning of the guide plate auxiliary device. When the guide plate auxiliary device needs to be removed, the lever 608 is rotated. When the lever 608 rotates, it will move in the through groove 607 inside the connecting block 606, thereby moving the connecting block 606 and the slide bar 602 on one side. The slide bar 602 will drive the limiting plate 604 at one end to move, thereby disengaging from the limiting block 605. At this time, the movable positioning arm 5 can be disengaged from the limiting mechanism 6, completing the removal of the guide plate auxiliary device. In this way, the above operation can facilitate the connection of the shoulder joint surgery guide plate auxiliary device and the positioning of the shoulder joint surgery guide plate auxiliary device on the shoulder joint.

[0024] In summary: When using the rapid positioning shoulder joint surgical guide device, firstly, the cortical arm 1 is passed through the arm, and the head-holding arm 7 and the head-concave arm 8 are aligned with the shoulder joint. Then, the positioning arm 5 is connected to the connecting strip a2. When the Kirschner wire is inserted into the positioning hole a9 and the intramedullary positioning needle is inserted into the positioning hole b10, the positioning of the guide device can be completed. At this time, the humeral prosthesis can be implanted through the guide device. The contents not described in detail in this instruction are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid positioning shoulder joint surgical guide aid, including: A leather arm (1) and a limiting mechanism (6), wherein a connecting strip a (2) is fixedly connected to both the top and bottom of the leather arm (1), and a handle (3) is fixedly connected to one end of the connecting strip a (2), characterized in that, The leather arm (1) is fixedly connected to a connecting strip b (4) on the side away from the connecting strip a (2). A positioning arm (5) is fixedly connected to the top of the connecting strip b (4). A limiting mechanism (6) is provided on one side of the connecting strip a (2). The limiting mechanism (6) includes a connecting sleeve (601) fixedly connected to one side of the connecting strip a (2). A sliding rod (602) is slidably connected inside the connecting sleeve (601). A limiting plate (604) is fixedly connected to one end of the sliding rod (602). A locking block (605) is fixedly connected to one end of the positioning arm (5).

2. The rapid positioning shoulder joint surgical guide auxiliary device according to claim 1, characterized in that: A head-holding arm (7) is fixedly connected to one side of the connecting strip a (2), and one end of the head-holding arm (7) is fixed to the connecting strip b (4).

3. The rapid positioning shoulder joint surgical guide auxiliary device according to claim 1, characterized in that: The top of the connecting strip a (2) is fixedly connected to the head recess arm (8) on the side away from the head arm (7), and the positioning arm (5) has a positioning hole a (9) in the middle.

4. The rapid positioning shoulder joint surgical guide aid according to claim 1, characterized in that: The connecting bar a (2) has a positioning hole b (10) in the middle, the leather arm (1) has a scale mark (11) on one side, and the slide bar (602) has a spring (603) sleeved on the outside.

5. The rapid positioning shoulder joint surgical guide auxiliary device according to claim 4, characterized in that: One end of the spring (603) abuts against the limiting plate (604), and the other end of the spring (603) abuts against the connecting sleeve (601).

6. The rapid positioning shoulder joint surgical guide auxiliary device according to claim 1, characterized in that: One end of the slide bar (602) is fixedly connected to a connecting block (606), and the connecting block (606) has a through groove (607) inside, and the through groove (607) is slidably connected to the lever (608).

7. The rapid positioning shoulder joint surgical guide auxiliary device according to claim 6, characterized in that: The top of the lever (608) is movably connected to the connecting sleeve (601) via a pivot. The limiting plate (604) is L-shaped, and one end of the lever (608) is arc-shaped.

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