Positioning guider for acromioclavicular joint dislocation implantation operation

Abstract

The utility model relates to a positioning guider for acromioclavicular dislocation implantation surgery, which comprises a connecting part, positioning parts respectively arranged at two ends of the connecting part and a drill bit guide cylinder, a rotary sleeve in threaded fit is arranged on the outer surface, close to the bottom, of the drill bit guide cylinder, and a fixed shaft axially parallel to the rotary sleeve is arranged outside the rotary sleeve. An arc-shaped sleeve is rotationally arranged on the fixing shaft, a clamping part is arranged at the non-hinged end of the arc-shaped sleeve, and a limiting protrusion used for limiting the rotating stroke of the arc-shaped sleeve is arranged at the position, matched with the fixing shaft, of the arc-shaped sleeve. The clamping part is arranged outside the drill bit guide cylinder in a folded mode through the arc-shaped sleeve, when the drill bit is used, the unfolded clamping part can clamp an upper skeleton through relative rotation between the fixing shaft and the arc-shaped sleeve, the overall sectional area is small after the drill bit is folded, and the drill bit is convenient to use. And a wound caused in the process of placing the drill bit guide cylinder is smaller.

Description

Technical Field

[0001] This utility model belongs to the field of orthopedic surgical instruments, specifically relating to a positioning guide for acromioclavicular joint dislocation implantation surgery. Background Technology

[0002] When performing surgery for acromioclavicular joint dislocation, it is necessary to cut a channel to expose the bone and connect the bone at the dislocation site (hereinafter referred to as the upper bone) to the bone below (hereinafter referred to as the lower bone) with a loop plate. During the operation, a channel needs to be drilled in the two bone segments, and then a plate is implanted and a loop is inserted into the channel to connect the two ends of the plate.

[0003] During drilling, the lower bone needs to be supported by the positioning end of the positioning and navigation device, and the drill bit is guided by the navigation tube to drill. During the downward rotation of the drill bit, the upper bone may wobble or slip when it comes into contact with the drill bit because one end has been dislocated. Therefore, it needs to be fixed. For example, patent application No. 202211647807.5 discloses a surgical device for acromioclavicular joint dislocation, which fixes the bone with a U-shaped component. However, the U-shaped component is large and cannot be deformed, requiring a large incision when it enters the patient's body. Utility Model Content

[0004] The purpose of this invention is to provide a positioning guide for acromioclavicular joint dislocation implantation surgery in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A positioning guide for acromioclavicular joint dislocation implantation surgery includes a connecting part, positioning parts disposed at both ends of the connecting part, and a drill guide cylinder. The outer surface of the drill guide cylinder near the bottom is provided with a threaded rotating sleeve. A fixed shaft parallel to the axial direction of the rotating sleeve is provided outside the rotating sleeve. An arc-shaped sleeve is rotatably disposed on the fixed shaft. A clamping part is provided at the non-hinged end of the arc-shaped sleeve. A limiting protrusion for limiting the rotational stroke of the arc-shaped sleeve is provided at the part of the arc-shaped sleeve that mates with the fixed shaft.

[0007] As a further optimization of this utility model, a positioning groove is provided on the surface of the positioning part away from the connecting part, and a through hole is provided in the positioning groove. The drill bit guide cylinder points to the positioning groove. The positioning purpose is achieved by fastening the positioning groove to the lower bone. The through hole is provided for the drill bit to pass through.

[0008] As a further optimization of this utility model, a damping sleeve is detachably provided at the end of the connecting part near the drill bit guide cylinder. The damping sleeve is sleeved on the outside of the drill bit guide cylinder. By detachably connecting the connecting part with the drill bit guide cylinder, it is convenient to operate the drill bit guide cylinder. The clamping part forms a clamping effect on the upper skeleton through deformation. After clamping, the damping sleeve is fixed to the connecting part.

[0009] As a further optimization of this utility model, the damping sleeve is connected by a fixing pin on its surface and a slot on the surface of the connecting part, which makes the connection convenient and quick.

[0010] As a further optimization of this utility model, the surface of the drill bit guide cylinder near the bottom end is provided with an external thread, and the inner wall of the rotating sleeve is provided with an internal thread that mates with the external thread. Through the thread structure, the drill bit guide cylinder can move axially by rotation relative to the rotating sleeve, so as to clamp the upper skeleton.

[0011] As a further optimization of this utility model, the clamping part includes a first clamping part parallel to the drill bit guide cylinder and a second clamping part perpendicular to the first clamping part. By setting two clamping parts, a firm clamping effect is formed.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention folds the clamping part outside the drill bit guide cylinder by using an arc-shaped sleeve. In use, the relative rotation between the fixed shaft and the arc-shaped sleeve allows the unfolded clamping part to clamp the upper bone. Furthermore, the overall cross-sectional area is small after folding, resulting in a smaller wound during the insertion of the drill bit guide cylinder. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the clamping part of this utility model before it is unfolded.

[0016] Figure 3 This is the utility model Figure 1 Enlarged view of the structure of part A in the middle.

[0017] Figure 4 This is a schematic diagram of the clamping part of this utility model after it has been unfolded.

[0018] Figure 5 This is the utility model Figure 1 BB-direction view.

[0019] Figure 6 This is a schematic diagram of the second embodiment of the present invention.

[0020] In the figure: 1. Connecting part; 2. Damping sleeve; 201. Fixing pin; 3. Drill bit guide tube; 301. External thread; 4. Positioning part; 401. Through hole; 5. Rotating sleeve; 501. Fixing shaft; 502. Arc sleeve; 503. First clamping part; 504. Second clamping part; 505. Limiting protrusion. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] like Figure 1-5 As shown, a positioning guide for acromioclavicular joint dislocation implantation surgery includes a connecting part 1, positioning parts 4 disposed at both ends of the connecting part 1, and a drill guide cylinder 3. A threaded rotating sleeve 5 is provided on the outer surface of the drill guide cylinder 3 near the bottom. A fixed shaft 501 parallel to the axial direction of the rotating sleeve 5 is provided on the outside of the rotating sleeve 5. An arc-shaped sleeve 502 is rotatably disposed on the fixed shaft 501. A clamping part is provided at the non-hinged end of the arc-shaped sleeve 502. A limiting protrusion 505 for limiting the rotation stroke of the arc-shaped sleeve 502 is provided at the part of the arc-shaped sleeve 502 that cooperates with the fixed shaft 501.

[0024] This solution folds the clamping part outside the drill bit guide cylinder 3 by using the arc sleeve 5. In use, the relative rotation between the fixed shaft 501 and the arc sleeve 502 allows the unfolded clamping part to clamp the upper bone. Furthermore, the overall cross-sectional area is small after folding, resulting in a smaller wound when the drill bit guide cylinder 3 is inserted.

[0025] The positioning part 4 has a positioning groove on its surface away from the connecting part 1. A through hole 401 is provided in the positioning groove. The drill bit guide cylinder 3 points to the positioning groove. The positioning purpose is achieved by fastening the positioning groove to the lower bone. The through hole 401 is provided for the drill bit to pass through.

[0026] A damping sleeve 2 is detachably provided at the end of the connecting part 1 near the drill bit guide cylinder 3. The damping sleeve 2 is sleeved on the outside of the drill bit guide cylinder 3. By detachably connecting the connecting part 1 to the drill bit guide cylinder 3, it is convenient to operate the drill bit guide cylinder 3. The clamping part forms a clamping effect on the upper skeleton through deformation. After clamping, the damping sleeve 2 is fixed to the connecting part 1.

[0027] The damping sleeve 2 is connected to the slot provided on the surface of the connecting part 1 by a fixing pin 201 provided on its surface. The connection between the fixing pin 201 and the slot is convenient and quick.

[0028] The drill bit guide cylinder 3 has an external thread 301 on its surface near the bottom end, and the inner wall of the rotating sleeve 5 has an internal thread that mates with the external thread 301. Through the thread structure, the drill bit guide cylinder 3 can rotate axially relative to the rotating sleeve 5 to facilitate clamping the upper skeleton.

[0029] The clamping part includes a first clamping part 503 parallel to the drill bit guide cylinder 3 and a second clamping part 504 perpendicular to the first clamping part 503. By setting two clamping parts, a firm clamping effect is formed.

[0030] The specific implementation method is as follows: First, the skin is cut open, the bones and muscles of the surgical area are separated, the damping sleeve 2 is removed from the connecting part 1, and the drill guide cylinder 3 is fixed separately. The drill guide cylinder 3 is placed into the wound, so that the clamping part moves downward from the gap next to the upper bone. Then, the drill guide cylinder 3 is rotated. Initially, the drill guide cylinder 3 and the rotating cylinder 5 are a whole and rotate along the fixed axis 501, that is, from Figures 2 to 4 In the first position, hook the second clamping part 504 under the upper bone, and hold the drill guide cylinder 3 to apply a certain pulling force to press the clamping part against the upper bone. Then continue to rotate the drill guide cylinder 3. Due to the effect of the limiting protrusion 505 and the friction generated after the clamping part is pressed against the upper bone, the drill guide cylinder 3 rotates relative to the rotating sleeve 5. The threaded structure causes the drill guide cylinder 3 to move down and contact the upper bone. Then, the connecting part 1 and the positioning part 4 are placed into the lower bone for positioning. The damping sleeve 2 is fixed to the connecting part 1 to complete the installation. Finally, the drill bit enters the drill guide cylinder 3 to drill a channel, and then the steel plate and loop are implanted. After connection, the device is removed and the wound is sutured.

[0031] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A positioning guide for acromioclavicular joint dislocation implantation surgery, comprising a connecting part (1), positioning parts (4) respectively disposed at both ends of the connecting part (1), and a drill guide cylinder (3), characterized in that: The drill bit guide sleeve (3) has a threaded rotating sleeve (5) on its outer surface near the bottom. The rotating sleeve (5) has a fixed shaft (501) parallel to the axial direction of the rotating sleeve (5) on its outer side. An arc-shaped sleeve (502) is rotatably mounted on the fixed shaft (501). The non-hinged end of the arc-shaped sleeve (502) has a clamping part. The part of the arc-shaped sleeve (502) that mates with the fixed shaft (501) has a limiting protrusion (505) for limiting the rotational stroke of the arc-shaped sleeve (502).

2. The positioning guide for acromioclavicular joint dislocation implantation surgery according to claim 1, characterized in that: The positioning part (4) has a positioning groove on its surface away from the connecting part (1), and a through hole (401) is provided in the positioning groove.

3. The positioning guide for acromioclavicular joint dislocation implantation surgery according to claim 1, characterized in that: The connecting part (1) is provided with a damping sleeve (2) at the end near the drill bit guide cylinder (3), and the damping sleeve (2) is sleeved on the outside of the drill bit guide cylinder (3).

4. The positioning guide for acromioclavicular joint dislocation implantation surgery according to claim 3, characterized in that: The damping sleeve (2) is connected to the groove on the surface of the connecting part (1) by a fixing pin (201) provided on its surface.

5. The positioning guide for acromioclavicular joint dislocation implantation surgery according to claim 1, characterized in that: The drill bit guide cylinder (3) has an external thread (301) on its surface near the bottom end, and the inner wall of the rotating sleeve (5) has an internal thread that mates with the external thread (301).

6. The positioning guide for acromioclavicular joint dislocation implantation surgery according to claim 1, characterized in that: The clamping part includes a first clamping part (503) parallel to the drill bit guide tube (3) and a second clamping part (504) perpendicular to the first clamping part (503).

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