Acromion positioning device

Abstract

The application relates to a shoulder peak positioning device, which comprises a first adjusting arm, a second adjusting arm and a holding piece connecting the first adjusting arm and the second adjusting arm, and is arranged in parallel along a first direction; the shoulder peak positioning device further comprises a first positioning piece and a second positioning piece. The first positioning piece is rotationally connected with the first adjusting arm, the first positioning piece is provided with a first positioning hole, and the first positioning piece has a first rotation axis which is parallel to the first direction. The second positioning piece is rotationally connected with the second adjusting arm, the second positioning piece is provided with a second positioning hole, the second positioning piece has a second rotation axis which is parallel to the first direction, the second rotation axis is collinear with the first rotation axis, and the vertical distance from the center of the first positioning hole to the first rotation axis is equal to the vertical distance from the center of the second positioning hole to the second rotation axis. The shoulder peak positioning device can accurately establish a bone tunnel on a shoulder peak, and can avoid secondary injury of a patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an acromion positioning device. Background Technology

[0002] Rotator cuff tears (RCTs) are a group of diseases caused by chronic shoulder joint disease or trauma, characterized primarily by persistent shoulder pain and limited range of motion. With advancements in medicine, the effectiveness of rotator cuff treatment has become increasingly significant; however, treating large rotator cuff tears remains a challenge in orthopedic sports medicine. Current treatment methods include surgery and prosthesis implantation. Rotator cuff prosthesis implantation is the latest option for treating irreparable large rotator cuff tears, offering low risk, simple procedure, significant improvement in shoulder joint function, reduced pain, and enhanced quality of life.

[0003] In rotator cuff implantation, the rotator cuff prosthesis needs to be fixed in the subacromial space by binding to prevent displacement and complications. Specifically, the pre-placed sutures on the rotator cuff prosthesis need to penetrate the acromial bone and be knotted and fixed on the upper surface of the acromion, thus requiring the creation of a bone tunnel through the acromion. Because rotator cuff implantation is an arthroscopic procedure, it is extremely difficult to perform, and the bone tunnel cannot be visually positioned. Relying solely on the surgeon's experience to create the bone tunnel is not accurate and can easily lead to displacement of the bone tunnel, resulting in problems such as prosthesis damage, prosthesis failure, limited patient mobility, or re-injury. Summary of the Invention

[0004] Therefore, it is necessary to provide an acromion positioning device to address the problem of how to accurately establish a bone tunnel on the acromion.

[0005] On one hand, this application provides an acromion positioning device, comprising:

[0006] A first adjusting arm, a second adjusting arm, and a gripping member connecting the first adjusting arm and the second adjusting arm are arranged parallel to each other along a first direction;

[0007] A first positioning element is rotatably connected to the first adjusting arm. The first positioning element is provided with a first positioning hole and has a first rotation axis parallel to the first direction.

[0008] The second positioning member is rotatably connected to the second adjusting arm. The second positioning member has a second positioning hole and a second rotation axis parallel to the first direction. The second rotation axis is collinear with the first rotation axis, and the vertical distance from the center of the first positioning hole to the first rotation axis is equal to the vertical distance from the center of the second positioning hole to the second rotation axis.

[0009] The technical solution of this application will be further described below:

[0010] In one embodiment, the first adjusting arm is slidably extended in a direction perpendicular to the first direction; the second adjusting arm is slidably extended in a direction perpendicular to the first direction.

[0011] In one embodiment, the gripping member includes a gripping portion, a first connecting portion connected to one end of the gripping portion, and a second connecting portion connected to the other end of the gripping portion. Both the first connecting portion and the second connecting portion extend at least partially perpendicular to the first direction. A first adjusting arm is connected to the first connecting portion and is slidable in a direction perpendicular to the first direction. The second adjusting arm is connected to the second connecting portion and is slidable in a direction perpendicular to the first direction.

[0012] In one embodiment, the first adjusting arm is provided with a first slide groove extending perpendicular to the first direction, the first connecting portion is provided with a first threaded hole communicating with the first slide groove, and the shoulder peak positioning device further includes a first threaded component, the first threaded component includes a first threaded portion and a first limiting portion connected to the first threaded portion, the first threaded portion passes through the first slide groove and is threadedly engaged with the first threaded hole, the first limiting portion is located outside the first slide groove, and the equivalent diameter of the first limiting portion is greater than the width of the first slide groove.

[0013] The second adjusting arm is provided with a second slide groove extending perpendicular to the first direction, and the second connecting part is provided with a second threaded hole communicating with the second slide groove. The shoulder positioning device further includes a second threaded component, which includes a second threaded portion and a second limiting portion connected to the second threaded portion. The second threaded portion passes through the second slide groove and is threadedly engaged with the second threaded hole. The second limiting portion is located outside the second slide groove, and the equivalent diameter of the second limiting portion is greater than the width of the second slide groove.

[0014] In one embodiment, the first connecting portion or the first adjusting arm is provided with a first scale line for indicating the moving distance of the first adjusting arm;

[0015] The second connecting part or the second adjusting arm is provided with a second scale line for indicating the moving distance of the second adjusting arm.

[0016] In one embodiment, the first adjusting arm includes a body and an adjusting member movably connected to the body, the adjusting member being movable along the first direction, and the first positioning member being rotatably connected to the adjusting member.

[0017] In one embodiment, the body has a connecting hole through the body along the first direction, the adjusting member is slidably inserted in the connecting hole, the body also has a third threaded hole communicating with the connecting hole, the shoulder peak positioning device further includes a third threaded member, the third threaded member is threadedly engaged with the third threaded hole, and the third threaded member is used to abut or separate from the adjusting member.

[0018] In one embodiment, the acromion positioning device includes at least two first positioning members and at least two second positioning members. Two adjacent first positioning members can rotate relative to each other to form a first angle, and two adjacent second positioning members can rotate relative to each other to form a second angle. The positioning position is adjusted by the first angle and the second angle.

[0019] In one embodiment, the at least two first positioning members are coaxially disposed on the first adjusting arm, and the at least two second positioning members are coaxially disposed on the second adjusting arm.

[0020] In one embodiment, the acromion positioning device further includes a first fastener, which is threadedly connected to the first adjusting arm. Each of the first positioning members includes a first adapter portion, and the first adapter portions of all the first positioning members are rotatably fitted onto the first fastener.

[0021] The acromion positioning device further includes a second fastener, which is threadedly connected to the second adjusting arm. Each of the second positioning members includes a second adapter portion, and the second adapter portions of all the second positioning members are rotatably fitted onto the second fastener.

[0022] In one embodiment, the first fastener includes a first screw and a first nut threadedly connected to the first screw. The first screw is threadedly connected to the first adjusting arm. The first transition portions of all the first positioning members are stacked and sleeved on the outside of the first screw. The shoulder positioning device also includes a first elastic member, which is sleeved on the outside of the first screw. One end of the first elastic member abuts against the first transition portion, and the other end of the first elastic member abuts against the first nut.

[0023] The second fastener includes a second screw and a second nut threadedly connected to the second screw. The second screw is threadedly connected to the second adjusting arm. The second transition portions of all the second positioning members are stacked and sleeved on the outside of the second screw. The shoulder positioning device also includes a second elastic member, which is sleeved on the outside of the second screw. One end of the second elastic member abuts against the second transition portion, and the other end of the second elastic member abuts against the second nut.

[0024] In one embodiment, the acromion positioning device includes two first positioning members, which are disposed on the first adjusting arm, and the rotation axes of the two first positioning members are respectively a first rotation axis a and a first rotation axis b, which are arranged parallel to each other.

[0025] The acromion positioning device further includes two second positioning members, which are disposed on the second adjusting arm, and the rotation axes of the two second positioning members are the second rotation axis c and the second rotation axis d, respectively, and the second rotation axis c and the second rotation axis d are arranged parallel to each other.

[0026] Wherein, the first rotation axis a and the second rotation axis c are collinear; the first rotation axis b and the second rotation axis d are collinear.

[0027] In one embodiment, the first positioning member or the first adjusting arm is provided with a third scale line for indicating the rotation angle of the first positioning member;

[0028] The second positioning member or the second adjusting arm is provided with a fourth scale line for indicating the rotation angle of the second positioning member.

[0029] In one embodiment, the first positioning hole is a through hole, and the second positioning hole is a blind hole.

[0030] The aforementioned acromion positioning device features a rotatable first positioning element on the first adjusting arm and a rotatable second positioning element on the second adjusting arm. By inserting the second positioning element into the lower gap of the patient's acromion and rotating it, the second positioning hole on the second positioning element is aligned with the ideal position of the predetermined bone tunnel on the lower surface of the patient's acromion. Furthermore, by bringing the first positioning element close to the patient's outer shoulder skin and rotating it by the same angle as the second positioning element, the first and second positioning holes are aligned in the first direction. Since the first and second rotation axes of the first and second positioning elements are collinear, and the vertical distance from the center of the first positioning hole to the first rotation axis is equal to the vertical distance from the center of the second positioning hole to the second rotation axis, the ideal position of the predetermined bone tunnel on the lower surface of the patient's acromion can be directly reflected on the patient's outer skin, facilitating observation by the surgeon. At this point, a Kirschner wire is used to drill downwards through the first positioning hole until it reaches the second positioning hole, thus accurately establishing the ideal bone tunnel on the acromion. The first positioning hole serves as a positioning and guiding tool, allowing the Kirschner wire to drill along the predetermined trajectory. This prevents the bone tunnel from shifting, thus avoiding secondary injury to the patient caused by damage to other tissues of the acromion. It also avoids problems such as damage or failure of the rotator cuff prosthesis after implantation and postoperative limitation of the patient's mobility. Attached Figure Description

[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an acromion positioning device according to one embodiment;

[0034] Figure 2 for Figure 1 The front view of the acromion positioning device shown;

[0035] Figure 3 for Figure 1 A top view of the acromion positioning device shown;

[0036] Figure 4 for Figure 1 A bottom view of the acromion positioning device shown;

[0037] Figure 5 for Figure 2 A magnified view of part A shown in the diagram;

[0038] Figure 6 for Figure 2 A magnified view of part B shown in the diagram;

[0039] Figure 7 A schematic diagram of a structure in which two first positioning members are arranged on different axes in one embodiment;

[0040] Figure 8 This is a schematic diagram of a structure in which two second positioning members are arranged on different axes in one embodiment.

[0041] Explanation of reference numerals in the attached figures:

[0042] 11. Holding part; 111. First connecting part; 112. Second connecting part; 113. Holding part; 12. First adjusting arm; 121. Body; 122. Adjusting part; 123. First threaded part; 124. Third threaded part; 125. First slide groove; 131. Second adjusting arm; 132. Second threaded part; 133. Second slide groove; (20; 20A; 20B) First positioning part; 21. First positioning hole; 22. First adapter part; (23, 23a; 23b) First rotation axis; (30; 30C; 30D); second positioning element; 31; second positioning hole; 32; second adapter; (33; 33c; 33d;); second rotation axis; 41; first fastener; 411; first screw; 412; first nut; 42; second fastener; 421; second screw; 422; second nut; 51; first elastic element; 52; second elastic element; 61; first gear; 62; second gear; 63; third gear; 64; fourth gear. Detailed Implementation

[0043] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Specifically, one embodiment of this application provides an acromion positioning device for locating the opening position of the medullary tunnel on the acromion during rotator cuff prosthesis implantation surgery, determining the insertion point of the Kirschner wire, thereby accurately and efficiently establishing a bone tunnel penetrating the acromion. See also... Figure 1 as well as Figure 2One embodiment of the acromion positioning device includes a first adjusting arm 12, a second adjusting arm 131, and a holding member 11 connecting the first adjusting arm 12 and the second adjusting arm 131, all arranged parallel to a first direction. The acromion positioning device also includes a first positioning member 20 and a second positioning member 30. Specifically, in this embodiment, the first direction is a vertical direction, i.e., the direction of the patient's spine extension. The first positioning member 20 is rotatably connected to the first adjusting arm 12, and has a first positioning hole 21 and a first rotation axis 23 parallel to the first direction. The second positioning member 30 is rotatably connected to the second adjusting arm 131, and has a second positioning hole 31 and a second rotation axis 33 parallel to the first direction. The second rotation axis 33 is collinear with the first rotation axis 23, and the vertical distance from the center of the first positioning hole 21 to the first rotation axis 23 is equal to the vertical distance from the center of the second positioning hole 31 to the second rotation axis 33.

[0045] Specifically, the above-mentioned acromion positioning device includes the following steps when in use:

[0046] S110: Rotate the first positioning member 20 and the second positioning member 30 so that the first positioning hole 21 and the second positioning hole 31 are aligned in the first direction, and record the position of the first positioning member 20 and the position of the second positioning member 30 at this time as the initial position.

[0047] S120: The surgeon holds the handle 11 with the handle portion 113 parallel to the patient's spine. The first positioning member 20 is placed close to the outer surface of the patient's shoulder skin, and the second positioning member 30 is inserted into the subacromial space of the patient's acromion and placed close to the subacromial surface.

[0048] S130: Observe the lower surface of the patient's acromion through arthroscopy, determine the ideal position of the bone tunnel on the lower surface of the patient's acromion, and at the same time move the acromion positioning device and rotate the second positioning member 30 under the observation of the arthroscopy so that the second positioning hole 31 is aligned with the ideal position of the bone tunnel, fix the position of the acromion positioning device at this time, and record the angle through which the second positioning member 30 has rotated.

[0049] S140: The first positioning member 20 is rotated through the same angle as the second positioning member 30. Since the first rotation axis 23 of the first positioning member 20 and the second rotation axis 33 of the second positioning member 30 are collinear, and the vertical distance from the center of the first positioning hole 21 to the first rotation axis 23 is equal to the vertical distance from the center of the second positioning hole 31 to the second rotation axis 33, the first positioning hole 21 and the second positioning hole 31 are now aligned again in the first direction.

[0050] S150: Insert the Kirschner wire into the first positioning hole 21 and then downward into the acromion until the Kirschner wire reaches the second positioning hole 31. At this point, the bone marrow tract can be established.

[0051] The aforementioned acromion positioning device features a rotatable first positioning element 20 on the first adjusting arm 12 and a rotatable second positioning element 30 on the second adjusting arm 131. By inserting the second positioning element 30 into the lower gap of the patient's acromion and rotating it, the second positioning hole 31 on the second positioning element 30 is aligned with the ideal position of the predetermined bone tunnel on the lower surface of the patient's acromion. Furthermore, by bringing the first positioning element 20 close to the patient's outer shoulder skin and rotating it through the same angle as the second positioning element 30, the device achieves the desired positioning effect. Since the first rotation axis 23 of the first positioning element 20 is aligned with the second positioning hole 31, the device effectively positions the acromion. The second rotation axis 33 of the positioning element 30 is collinear, and the vertical distance from the center of the first positioning hole 21 to the first rotation axis 23 is equal to the vertical distance from the center of the second positioning hole 31 to the second rotation axis 33. This ensures that the first positioning hole 21 and the second positioning hole 31 are aligned in the first direction, thus visually reflecting the ideal position of the bone tunnel predetermined by the surgeon on the lower surface of the patient's acromion onto the patient's outer skin surface, facilitating observation by the surgeon. At this time, a Kirschner wire is used to drill downwards through the first positioning hole 21 until the Kirschner wire reaches the second positioning hole 31, thereby accurately establishing the ideal bone tunnel in the acromion. The first positioning hole 21 plays a positioning and guiding role, allowing the Kirschner wire to drill along the predetermined trajectory, avoiding displacement of the bone tunnel position, thereby avoiding secondary injury to the patient caused by damage to other tissues of the acromion, and also avoiding problems such as damage or failure of the rotator cuff prosthesis after implantation and postoperative limitation of patient's activity.

[0052] Furthermore, the first adjusting arm 12 can slide and extend in a direction perpendicular to the first direction, thereby adjusting the position of the first positioning member 20 in the direction perpendicular to the first direction; the second adjusting arm can slide and extend in a direction perpendicular to the first direction, thereby adjusting the position of the second positioning member 30 in the direction perpendicular to the first direction. Specifically, see... Figure 2The gripping member 11 includes a gripping portion 113, a first connecting portion 111 connected to one end of the gripping portion 113, and a second connecting portion 112 connected to the other end of the gripping portion 113. The gripping portion 113 is used by the operator to hold the grip for operation. The gripping portion 113 extends along a first direction. Both the first connecting portion 111 and the second connecting portion 112 extend at least partially perpendicular to the first direction. A first adjusting arm 12 is connected to the first connecting portion 111 and is slidable in a direction perpendicular to the first direction. A second adjusting arm 131 is connected to the second connecting portion 112 and is also slidable in a direction perpendicular to the first direction. Specifically, due to individual differences, the acromion position varies among patients. By sliding the first adjusting arm 12 to the first connecting portion 111, the position of the first positioning member 20 in the direction perpendicular to the first direction can be adjusted. Similarly, by sliding the first adjusting arm 12 and the first connecting part 111 together, the position of the second positioning member 30 in the direction perpendicular to the first direction can be adjusted, so that the acromion positioning device can be applied to patients of different body types, thus improving the versatility of the acromion positioning device.

[0053] Specifically, see Figure 3 The first adjusting arm 12 is provided with a first slide groove 125 extending perpendicular to a first direction. The first connecting portion 111 is provided with a first threaded hole communicating with the first slide groove 125. The shoulder positioning device also includes a first threaded component 123, which includes a first threaded portion and a first limiting portion connected to the first threaded portion. The first threaded portion passes through the first slide groove 125 and is threadedly engaged with the first threaded hole. The first limiting portion is located outside the first slide groove 125, and the equivalent diameter of the first limiting portion is greater than the width of the first slide groove 125, so that the first threaded component 123 can lock the first adjusting arm 12 to the first connecting portion 111. The equivalent diameter of the first limiting portion refers to the dimension of the first limiting portion in the width direction of the first slide groove 125. Preferably, in this embodiment, the width of the first slide groove 125 is 1 mm. Specifically, when it is necessary to adjust the position of the first adjusting arm 12 in the direction perpendicular to the first direction, first loosen the first threaded part 123. At this time, the first adjusting arm 12 can slide relative to the first connecting part 111 in the direction perpendicular to the first direction. After the first adjusting arm 12 is adjusted to the appropriate position, tighten the first threaded part 123 so that the first limiting part of the first threaded part 123 abuts against the first adjusting arm 12, thereby fixing the relative position of the first adjusting arm 12 and the first connecting part 111.

[0054] See Figure 4Similarly, the second adjusting arm 131 is provided with a second slide groove 133 extending perpendicular to the first direction, and the second connecting portion 112 is provided with a second threaded hole communicating with the second slide groove 133. The shoulder positioning device also includes a second threaded member 132, which includes a second threaded portion and a second limiting portion connected to the second threaded portion. The second threaded portion passes through the second slide groove 133 and is threadedly engaged with the second threaded hole. The second limiting portion is located outside the second slide groove 133, and the equivalent diameter of the second limiting portion is greater than the width of the second slide groove 133, so that the second threaded member 132 can lock the second adjusting arm 131 to the second connecting portion 112. The equivalent diameter of the second limiting portion refers to the dimension of the second limiting portion in the width direction of the second slide groove 133. Preferably, in this embodiment, the width of the second slide groove 133 is 1 mm. Specifically, when it is necessary to adjust the position of the second adjusting arm 131 in the direction perpendicular to the first direction, first loosen the second threaded part 132. At this time, the second adjusting arm 131 can slide relative to the second connecting part 112 in the direction perpendicular to the first direction. After the second adjusting arm 131 is adjusted to the appropriate position, tighten the second threaded part 132 so that the second limiting part of the second threaded part 132 abuts against the second adjusting arm 131, thereby fixing the relative position of the second adjusting arm 131 and the second connecting part 112.

[0055] It is worth noting that there are many other connection methods that can achieve relative movement between the first adjusting arm 12 and the first connecting part 111, and are not limited to the above embodiments. For example, the first adjusting arm 12 and the first connecting part 111 can also be threaded together, or the first adjusting arm 12 and the first connecting part 111 can be nested together, etc. Similarly, there are many other connection methods that can achieve relative movement between the second adjusting arm 131 and the second connecting part 112, and are not limited to the above embodiments. For example, the second adjusting arm 131 and the second connecting part 112 can also be threaded together, or the second adjusting arm 131 and the second connecting part 112 can be nested together, etc., which will not be elaborated here.

[0056] Furthermore, to ensure that the first rotation axis 23 of the first positioning member 20 and the second rotation axis 33 of the second positioning member 30 remain collinear after adjusting the positions of the first adjusting arm 12 and the second adjusting arm 131, it is necessary to ensure that the distances moved by the first adjusting arm 12 and the second adjusting arm 131 are equal each time. Therefore, in this embodiment, the first connecting part 111 or the first adjusting arm 12 is provided with a first scale line to indicate the moving distance of the first adjusting arm 12, which can guide the surgeon to adjust the first adjusting arm 12 to a suitable position. Similarly, the second connecting part 112 or the second adjusting arm 131 is provided with a second scale line to indicate the moving distance of the second adjusting arm 131, which can guide the surgeon to adjust the second adjusting arm 131 to a suitable position, thereby ensuring that the distances moved by the first adjusting arm 12 and the second adjusting arm 131 are equal each time, and thus ensuring that the first rotation axis 23 of the first positioning member 20 and the second rotation axis 33 of the second positioning member 30 remain collinear.

[0057] Furthermore, due to individual differences, the acromion height varies among patients. To ensure that the first positioning element 20 can closely adhere to the outer surface of the patient's shoulder skin after the second positioning element 30 extends into the subacromial space, see [reference needed]. Figure 1 as well as Figure 2 In this embodiment, the first adjusting arm 12 includes a body 121 and an adjusting member 122. The body 121 is slidably connected to the first connecting part 111, the adjusting member 122 is movably connected to the body 121, and the adjusting member 122 can move along a first direction. The first positioning member 20 is rotatably connected to the adjusting member 122. Thus, by moving the adjusting member 122 along the first direction, the distance between the first positioning member 20 and the second positioning member 30 in the first direction can be adjusted. Therefore, for different patients with different acromion heights, the second positioning member 30 can be very close to the outer surface skin of the patient's shoulder, thereby accurately positioning and guiding the Kirschner wire.

[0058] Specifically, the main body 121 has a connecting hole extending through it along a first direction. The adjusting member 122 is slidably inserted into the connecting hole. The main body 121 also has a third threaded hole communicating with the connecting hole. Preferably, the central axis of the third threaded hole is perpendicular to the central axis of the connecting hole. Further, the acromion positioning device also includes a third threaded member 124, which is threadedly engaged with the third threaded hole. The third threaded member 124 is used to abut or separate from the adjusting member 122. During the operation, by loosening the third threaded member 124, the third threaded member 124 is separated from the adjusting member 122. At this time, the adjusting member 122 can move freely within the connecting hole. By moving the adjusting member 122 until the first positioning member 20 on the adjusting member 122 is close to the outer surface skin of the patient's shoulder, and then by tightening the third threaded member 124, the third threaded member 124 abuts against the adjusting member 122. At this time, the adjusting member 122 can be locked in the connecting hole.

[0059] See Figure 1 as well as Figure 2 The acromion positioning device includes at least two first positioning elements 20 and at least two second positioning elements 30. Adjacent first positioning elements can rotate relative to each other to form a first angle, and adjacent second positioning elements can rotate relative to each other to form a second angle. The positioning position is adjusted by using the first and second angles. Specifically, in clinical use, the positioning position of the bone tunnels is adjusted by adjusting the size of the first and second angles, thereby adapting to the acromion structure of different patients. Furthermore, in clinical use, the first and second angles need to be kept equal to ensure that all first positioning elements and all second positioning elements 30 are aligned one-to-one in the first direction. For example, in this embodiment, the first adjusting arm 12 is provided with two rotatable first positioning elements 20, and the second adjusting arm 131 is provided with two rotatable second positioning elements 30. By aligning the two first positioning elements 20 and the two second positioning elements 30 one-to-one in the first direction, two bone tunnels can be positioned on the acromion.

[0060] Specifically, in this embodiment, at least two first positioning members 20 are coaxially disposed on the first adjusting arm 12, that is, the first rotation axes 23 of all the first positioning members 20 are collinear, thereby facilitating the adjustment of the relative positions of each first positioning hole 21. Specifically, in this embodiment, the shoulder positioning device also includes a first fastener 41, which is threadedly connected to the first adjusting arm 12. Each first positioning member 20 is provided with a first adapter 22, and the first adapter 22 of all the first positioning members 20 can be rotatably sleeved on the first fastener 41. The first rotation axis of the first positioning member 20 is the central axis of the first fastener 41.

[0061] Further, see Figure 2 as well as Figure 5The first fastener 41 includes a first screw 411 and a first nut 412 threadedly connected to the first screw 411. The first screw 411 is threadedly connected to the first adjusting arm 12. The first adapters 22 of all the first positioning members 20 are stacked and sleeved on the outside of the first screw 411. The shoulder positioning device also includes a first elastic member 51, which is sleeved on the outside of the first screw 411. One end of the first elastic member abuts against the first adapter 22, and the other end of the first elastic member abuts against the first nut 412. The first fastener 41 is used to pre-tighten the first elastic member 51. By loosening or tightening the first fastener 41, the pre-tightening force of the first elastic member 51 can be adjusted. Thus, the pre-tightening force of the first elastic member 51 can be used to fix the first positioning member 20, thereby avoiding the problem that the first positioning hole 21 cannot be aligned with the corresponding second positioning hole 31 in the first direction due to the first positioning member 20 swinging randomly after being rotated to a suitable position.

[0062] See Figure 1 as well as Figure 2 Similarly, in this embodiment, at least two second positioning members 30 are coaxially disposed on the second adjusting arm 131, that is, the second rotation axes 33 of all the second positioning members 30 are collinear, thereby facilitating the adjustment of the relative positions of each second positioning hole 31. Specifically, in this embodiment, the shoulder positioning device further includes a second fastener 42, which is threadedly connected to the second adjusting arm 131. Each second positioning member 30 is provided with a second adapter 32, and the second adapters 32 of all the second positioning members 30 are rotatably sleeved on the second fastener 42. The second rotation axis of the second positioning member 30 is the central axis of the second fastener 42.

[0063] Further, see Figure 2 as well as Figure 6 The second fastener 42 includes a second screw 421 and a second nut 422 threadedly connected to the second screw 421. The second screw 421 is threadedly connected to the second adjusting arm 131. The second transition portions 32 of all the second positioning members 30 are stacked and sleeved on the outside of the second screw 421. The shoulder positioning device also includes a second elastic member 52, which is sleeved on the outside of the second screw 421. One end of the second elastic member abuts against the second transition portion 32, and the other end of the second elastic member abuts against the second nut 422. The second fastener 42 is used to pre-tighten the second elastic member 52. By loosening or tightening the second fastener 42, the pre-tightening force of the second elastic member 52 can be adjusted. Thus, the pre-tightening force of the second elastic member 52 can fix the second positioning member 30, thereby avoiding the problem that the first positioning hole 21 cannot be aligned with the corresponding second positioning hole 31 in the first direction due to the second positioning member 30 swinging randomly after being rotated to a suitable position.

[0064] It is worth noting that in other embodiments, at least two first positioning members 20 may also be arranged coaxially; similarly, at least two second positioning members 30 may also be arranged coaxially. See specifically... Figure 7 as well as Figure 8 In another embodiment, the acromion positioning device includes two first positioning elements 20 and two second positioning elements 30. The two first positioning elements 20 are first positioning element 20A and first positioning element 20B, respectively. First positioning elements 20A and 20B are disposed on the first adjusting arm 12. First positioning element 20A has a first rotation axis 23a, and first positioning element 20B has a first rotation axis 23b. The first rotation axis 23a and the first rotation axis 23b are arranged parallel to each other. See also... Figure 8 The two second positioning elements 30 are second positioning element 30C and second positioning element 30D, which are disposed on the second adjusting arm 131. Second positioning element 30C has a second rotation axis 33c, and second positioning element 30D has a second rotation axis 33d. The second rotation axes 33c and 33d are arranged parallel to each other. Furthermore, the first rotation axis 23a and the second rotation axis 33c are collinear, thereby ensuring that the first positioning hole 21 of the first positioning element 20A and the second positioning hole 31 of the second positioning element 30C are always aligned in the first direction. Similarly, the first rotation axis 23b and the second rotation axis 33d are collinear, ensuring that the first positioning hole 21 of the first positioning element 20B and the second positioning hole 31 of the second positioning element 30D are always aligned in the first direction.

[0065] See also Figure 7 as well as Figure 8 A first gear 61 and a second gear 62 are rotatably mounted on the first adjusting arm 12. A first positioning member 20A is connected to the first gear 61, and its first rotation axis 23a is the rotation center of the first gear 61. A first positioning member 20B is connected to the second gear 62, and its first rotation axis 23b is the rotation center of the second gear 62. By rotating the second gear 62 driven by the first gear 61, the first positioning members 20A and 20B can rotate in a direction away from each other to form a first angle. Furthermore, by using the same specifications for the first gear 61 and the second gear 62, the angular velocities of the first positioning members 20A and 20B are ensured to be consistent, facilitating the adjustment of the first angle. Further, see... Figure 8The second adjusting arm 131 is rotatably equipped with a meshing third gear 63 and a fourth gear 62. The second positioning member 30C is connected to the third gear 63, and the second rotation axis 33c of the second positioning member 30C is the rotation center of the third gear 63. The second positioning member 30D is connected to the fourth gear 64, and the second rotation axis 33d of the second positioning member 30D is the rotation center of the fourth gear 64. By driving the fourth gear 64 to rotate through the third gear 61, the second positioning members 30C and 30D can rotate in a direction away from each other to form a second angle. Furthermore, by using the same specifications for the third gear 63 and the fourth gear 64, the angular velocities of the second positioning members 30C and 30D can be kept consistent, facilitating the adjustment of the second angle. In clinical use, the first positioning element 20A and the second positioning element 30C are aligned in their initial positions, and the first positioning element 20B and the second positioning element 30D are aligned in their initial positions. After rotating the first gear 61 and the third gear 63, by making the first angle equal to the second angle, the first positioning element 20A and the second positioning element 30C are aligned again, and the first positioning element 20B and the second positioning element 30D are aligned again, thereby ensuring the smooth establishment of the bone tunnel.

[0066] Specifically, to ensure that the first positioning hole 21 and the second positioning hole 31 are always aligned in the first direction, it is necessary to ensure that the angle rotated by the first positioning member 20 relative to its initial position is equal to the angle rotated by the second positioning member 30 relative to its initial position. This allows the surgeon to more intuitively observe the angles rotated by the first positioning member 20 and the second positioning member 30 relative to their initial positions. In this embodiment, the first positioning member 20 or the first adjusting arm 12 is provided with a third scale line indicating the rotation angle of the first positioning member 20, and the second positioning member 30 or the second adjusting arm 131 is provided with a fourth scale line indicating the rotation angle of the second positioning member 30. Preferably, the reading of the third scale line at the initial position of the first positioning member 20 is 0, thus facilitating reading by the surgeon during operation. Similarly, the reading of the fourth scale line at the initial position of the second positioning member 30 is 0, thus facilitating reading by the surgeon during operation.

[0067] Preferably, in this embodiment, the first positioning hole 21 is a through hole, and the second positioning hole 31 is a blind hole. This ensures that when the Kirschner wire enters the first positioning hole 21, passes through the acromion, and reaches the second positioning hole 31, it will not penetrate the second positioning element 30, thus preventing damage to other tissues of the patient. Understandably, in other embodiments, the second positioning hole 31 can also be a through hole. During bone tunneling with Kirschner wires, the position of the Kirschner wire can be observed in real time via arthroscopy, which also prevents the Kirschner wire from penetrating the second positioning element 30.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0070] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0074] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A shoulder positioning device, characterized in that, The shoulder peak positioning device comprises: a first adjusting arm, a second adjusting arm arranged in parallel along a first direction, and a holding piece connecting the first adjusting arm and the second adjusting arm; a first positioning piece rotationally connected with the first adjusting arm, the first positioning piece being provided with a first positioning hole, and the first positioning piece having a first rotation axis parallel to the first direction; a second positioning piece rotationally connected with the second adjusting arm, the second positioning piece being provided with a second positioning hole, and the second positioning piece having a second rotation axis parallel to the first direction, the second rotation axis being collinear with the first rotation axis, and a vertical distance from a center of the first positioning hole to the first rotation axis being equal to a vertical distance from a center of the second positioning hole to the second rotation axis; the shoulder peak positioning device comprises at least two first positioning pieces and at least two second positioning pieces, the first positioning pieces and the second positioning pieces being arranged one by one; the first adjusting arm can be slidably extended along a direction perpendicular to the first direction; and the second adjusting arm can be slidably extended along a direction perpendicular to the first direction; wherein the second positioning piece can be inserted into a lower gap of a shoulder peak and rotated to a position where the second positioning hole is aligned with a lower surface of the shoulder peak and a predetermined bone tunnel, the first positioning piece can be close to an outer surface of a shoulder and rotated to a position where the first positioning hole is aligned with the second positioning hole in the first direction, and a predetermined bone tunnel can be established on the shoulder peak through the first positioning hole and the second positioning hole.

2. The acromion positioning device of claim 1, wherein, The holding piece comprises a holding portion, a first connecting portion connected to one end of the holding portion, and a second connecting portion connected to the other end of the holding portion, the first connecting portion and the second connecting portion both extending at least partially perpendicular to the first direction, the first adjusting arm being connected with the first connecting portion and being slidable along a direction perpendicular to the first direction, and the second adjusting arm being connected with the second connecting portion and being slidable along a direction perpendicular to the first direction.

3. The shoulder peak positioning device according to claim 2, wherein: the first adjusting arm is provided with a first sliding groove extending along a direction perpendicular to the first direction, the first connecting portion is provided with a first threaded hole in communication with the first sliding groove, the shoulder peak positioning device further comprises a first threaded piece, the first threaded piece comprising a first threaded portion and a first limiting portion connected with the first threaded portion, the first threaded portion being arranged in the first sliding groove and being threadedly matched with the first threaded hole, the first limiting portion being located outside the first sliding groove, and an equivalent diameter of the first limiting portion being greater than a width of the first sliding groove. The second adjusting arm is provided with a second sliding groove extending in a direction perpendicular to the first direction, the second connecting part is provided with a second threaded hole in communication with the second sliding groove, and the shoulder positioning device further comprises a second threaded part, the second threaded part comprises a second threaded portion and a second limiting portion connected with the second threaded portion, the second threaded portion is arranged in the second sliding groove and is in threaded connection with the second threaded hole, the second limiting portion is located outside the second sliding groove, and an equivalent diameter of the second limiting portion is greater than a width of the second sliding groove.

4. The shoulder positioning device according to claim 2, characterized in that: The first connecting part or the first adjusting arm is provided with a first scale line for indicating a moving distance of the first adjusting arm; The second connecting part or the second adjusting arm is provided with a second scale line for indicating a moving distance of the second adjusting arm.

5. The acromion positioning device of claim 1, wherein, The first adjusting arm comprises a body and an adjusting part movably connected with the body, the adjusting part is movable in the first direction, and the first positioning part is rotationally connected with the adjusting part.

6. The acromion positioning device of claim 5, wherein, The body is provided with a connecting hole penetrating through the body in the first direction, the adjusting part is slidably arranged in the connecting hole, and the body is further provided with a third threaded hole in communication with the connecting hole, the shoulder positioning device further comprises a third threaded part, the third threaded part is in threaded connection with the third threaded hole, and the third threaded part is used for abutting against or separating from the adjusting part.

7. The acromion positioning device of claim 1, wherein, Adjacent two first positioning parts can form a first angle by mutual rotation, adjacent two second positioning parts can form a second angle by mutual rotation, and the positioning position is adjusted by the first angle and the second angle.

8. The acromion positioning device of claim 7, wherein, The at least two first positioning parts are coaxially arranged on the first adjusting arm, and the at least two second positioning parts are coaxially arranged on the second adjusting arm.

9. The shoulder positioning device according to claim 8, characterized in that: The shoulder positioning device further comprises a first fastener, the first fastener is in threaded connection with the first adjusting arm, each first positioning part comprises a first adapter part, and the first adapter parts of all first positioning parts are rotationally sleeved on the first fastener; The shoulder positioning device further comprises a second fastener, the second fastener is in threaded connection with the second adjusting arm, each second positioning part comprises a second adapter part, and the second adapter parts of all second positioning parts are rotationally sleeved on the second fastener.

10. The shoulder positioning device according to claim 9, characterized in that: The first fastener comprises a first screw rod and a first nut in threaded connection with the first screw rod, the first screw rod is in threaded connection with the first adjusting arm, the first adapter parts of all first positioning parts are laminatedly sleeved outside the first screw rod, the shoulder positioning device further comprises a first elastic part, the first elastic part is sleeved outside the first screw rod, one end of the first elastic part abuts against the first adapter part, and the other end of the first elastic part abuts against the first nut. The second fastener comprises a second screw rod and a second nut threadedly connected with the second screw rod, the second screw rod is threadedly connected with the second adjusting arm, and the second adapter portions of all the second positioning members are sleeved outside the second screw rod in a stacked manner, the shoulder positioning device further comprises a second elastic member, the second elastic member is sleeved outside the second screw rod, one end of the second elastic member abuts against the second adapter portion, and the other end of the second elastic member abuts against the second nut.

11. The shoulder positioning device according to claim 7, characterized in that: The shoulder positioning device comprises two first positioning members, the two first positioning members are arranged on the first adjusting arm, and the rotation axes of the two first positioning members are respectively a first rotation axis a and a first rotation axis b, the first rotation axis a and the first rotation axis b are arranged in parallel; The shoulder positioning device further comprises two second positioning members, the two second positioning members are arranged on the second adjusting arm, and the rotation axes of the two second positioning members are respectively a second rotation axis c and a second rotation axis d, the second rotation axis c and the second rotation axis d are arranged in parallel; The first rotation axis a and the second rotation axis c are arranged in a same line, and the first rotation axis b and the second rotation axis d are arranged in a same line.

12. The shoulder positioning device according to any one of claims 1-11, characterized in that: The first positioning member or the first adjusting arm is provided with third scale lines for indicating the rotation angle of the first positioning member; The second positioning member or the second adjusting arm is provided with fourth scale lines for indicating the rotation angle of the second positioning member.

13. The shoulder positioning device of any one of claims 1-11, wherein, The first positioning hole is a through hole, and the second positioning hole is a blind hole.

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