Rotator cuff patch expander

Abstract

The present application relates to a rotator cuff patch spreader, and relates to the technical field of rotator cuff patches. The spreader includes a gripping portion, an unfolding portion, and a spreading device. The spreading device includes: a plurality of elastic support members, which are arranged on the unfolding portion and extend to both sides of the axis of the unfolding portion; a pulling mechanism, which is used to connect with the rotator cuff patch and drive the rotator cuff patch to be stored and wrapped on the unfolding portion for positioning; a protective mechanism, which is slidably arranged on the gripping portion and extends to the outside of the gripping portion and causes the rotator cuff patch to be pressed and stored in the protective mechanism for protection and positioning. The present application opens the rotator cuff patch under the action of the plurality of elastic support members and is used to maintain the state of the rotator cuff patch, then fixes the rotator cuff patch to the rotator cuff, and separates the rotator cuff patch from the pulling mechanism and the plurality of elastic support members, thereby completing the rotator cuff patch surgery, thereby improving the efficiency and quality of the rotator cuff patch surgery.

Description

Technical Field

[0001] The present application relates to the technical field of rotator cuff patches, and in particular to a rotator cuff patch expander. Background Art

[0002] Giant rotator cuff tear of the shoulder joint is a common and difficult-to-treat disease. Currently, for irreparable rotator cuff tears with a long injury time and a large defect area, bridging repair with an artificial synthetic rotator cuff patch is a treatment method with relatively satisfactory clinical results.

[0003] Although this technology is relatively mature, it is difficult for clinical physicians to perform this surgery due to the complexity of the intraoperative operation. During the operation, when the rotator cuff patch needs to be placed in the position to be repaired and then bridged and sutured, the entire joint is filled with saline. After the patch is placed in the joint, it is in a floating state and is difficult to fix in the designated position for bridge suture, thereby reducing the effectiveness and efficiency of the operation. Summary of the Invention

[0004] In order to improve surgical effect and efficiency, the present application provides a rotator cuff patch expander.

[0005] The present application provides a rotator cuff patch expander, which adopts the following technical solution:

[0006] A rotator cuff patch expander comprises a gripping portion, an unfolding portion and an expander, wherein the expander comprises:

[0007] A plurality of elastic support members are provided on the expansion portion and extend to both sides of the axis of the expansion portion, wherein the plurality of elastic support members are detachably connected to the rotator cuff patch through a connecting assembly and maintain the state of the rotator cuff patch under the action of elastic force;

[0008] A pulling mechanism is used to be detachably connected to the rotator cuff patch and drive the rotator cuff patch to be stored and wound on the unfolding portion for positioning. After the pulling mechanism is unlocked, the rotator cuff patch is stretched open by the elastic force of the multiple elastic support members.

[0009] The protection mechanism is slidably arranged on the gripping portion and extends to the outside of the gripping portion so that the rotator cuff patch is pressed and accommodated in the protection mechanism for protection and positioning.

[0010] By adopting the above technical solution, the rotator cuff patch is connected to the elastic support member through the connecting assembly, and then the rotator cuff patch is connected to the pulling mechanism. The pulling mechanism pulls the rotator cuff patch to overcome the elastic force of multiple elastic support members and then it is stored and wrapped around the outer wall of the unfolding part for positioning. Then the protective mechanism starts to move close to the unfolding part, so that the rotator cuff patch is located on the inner side of the protective mechanism and rests on the inner wall of the protective mechanism for positioning, thereby facilitating the storage and protection of the rotator cuff patch.

[0011] When surgery is required, the protective mechanism and the deployment part are moved to the repair site, and the protective mechanism is moved back close to the gripping part and away from the deployment part, so that the rotator cuff patch is moved to the outside of the protective mechanism, the pulling mechanism is unlocked, and multiple elastic support parts rebound under the action of elastic force, thereby supporting the rotator cuff patch and maintaining the state of the rotator cuff patch. The rotator cuff patch is then fixed to the rotator cuff, and the rotator cuff patch is separated from the pulling mechanism and multiple elastic support parts, so that the rotator cuff patch surgery can be completed, thereby improving the efficiency and quality of the rotator cuff patch surgery.

[0012] Multiple elastic support members facilitate the support and positioning of the rotator cuff patch, and also facilitate the winding of the rotator cuff patch onto the unfolding portion for storage and positioning. At the same time, multiple elastic support members are distributed on both sides of the unfolding portion, making it easy to evenly wind the rotator cuff patch onto the unfolding portion, so that the rotator cuff patch can be evenly pressed into the protective mechanism when it is stored in the protective mechanism, making the pressure of the rotator cuff patch on the protective mechanism more uniform, thereby making the protective mechanism more stable during operation, and reducing the pulling force of the rotator cuff patch on the pulling mechanism under the elastic force of multiple elastic support members, making the entire structure more stable, and improving the efficiency and quality of rotator cuff patch surgery.

[0013] The protective mechanism can protect the rotator cuff patch, improve the quality of the rotator cuff patch, and the rotator cuff patch is pressed against the protective mechanism for positioning, thereby reducing the force of the rotator cuff patch on the pulling mechanism under the elastic force of multiple elastic support members, improving the stability between multiple structures, and thus further improving the efficiency and quality of rotator cuff patch surgery.

[0014] Optionally, the pulling mechanism includes:

[0015] Two sets of pull wires are connected to the rotator cuff patches on both sides of the axis of the deployment part;

[0016] The two pulling components are respectively connected to the two groups of pull wires and are used to reel in or release the pull wires. The two pulling components are sequentially started to drive the rotator cuff patches located on both sides of the axis of the unfolding portion to be reeled in and wound onto the unfolding portion.

[0017] By adopting the above technical solution, one pulling component drives the rotator cuff patch located on one side of the axis of the deployment portion to be wrapped around the deployment portion first, and then the other pulling component drives another part of the rotator cuff patch to continue to be wrapped around the deployment portion or the already wrapped rotator cuff patch for positioning, thereby increasing the area of ​​the rotator cuff patch wrapped around the deployment portion, thereby reducing the size of the deployment portion and the protective mechanism, thereby facilitating the placement of the expander at the surgical site and improving the efficiency and quality of the operation.

[0018] Optionally, the pulling component includes:

[0019] A reel is rotatably mounted on the grip portion, and one end of the pull wire is connected to the reel and reeled on the reel;

[0020] A motor, used to drive the winding reel to rotate;

[0021] The button is provided on the handle and is used to control the start and stop and forward and reverse rotation of the motor.

[0022] By adopting the above technical solution, pressing the button controls the motor to start, and the motor starts to drive the reel to rotate. The reel rotates to reel in the pull wire, so that the rotator cuff patch is wrapped around the unfolded part, and the motor rotates in the opposite direction to drive the reel to release the pull wire. The rotator cuff patch is stretched out under the action of multiple elastic support members to facilitate surgery, thereby greatly improving the convenience of the operation process, thereby further improving the efficiency and quality of the surgery.

[0023] Optionally, a plurality of pull wires are arranged at intervals along the axis of the unfolding portion and are used to pull the rotator cuff patch to be spirally wound around the unfolding portion for positioning.

[0024] By adopting the above technical solution, multiple pull wires are arranged at intervals, so that the rotator cuff patch can be spirally wound on the unfolded part, so that multiple elastic support members can be spirally wound on the unfolded part, thereby increasing the length of the elastic support members so that they can extend to the outer edge of the rotator cuff patch, thereby improving the efficiency and quality of the operation.

[0025] Optionally, the protection mechanism includes:

[0026] A protective tube is slidably mounted on the grip portion and is provided with a clearance hole for the rotator cuff patch to pass through, so that the rotator cuff patch is pressed against the inner wall of the protective tube for protection and positioning or moved to the outside of the protective tube;

[0027] A locking assembly for positioning the protective tube;

[0028] The blocking component controls the opening or blocking of the avoidance hole.

[0029] By adopting the above technical solution, when the rotator cuff patch needs to be moved into the protective tube, the blocking component opens the avoidance hole, the locking component is unlocked, and then the protective tube is moved so that the rotator cuff patch is moved into the protective tube through the avoidance hole. Then the blocking component blocks the avoidance hole, and the locking component locks the position of the protective tube, so that the rotator cuff patch can be moved into the protective tube for protection.

[0030] The surgeon grasps the gripping part and moves the protective tube to the surgical site, unlocks the locking component, opens the avoidance hole of the blocking component, pushes the protective tube back to expose the rotator cuff patch, and then pulls the component to unlock. The rotator cuff patch rebounds under the action of multiple elastic support members and opens the rotator cuff patch for support, thereby fixing the rotator cuff patch, thereby achieving protection and support positioning of the rotator cuff patch, and improving the efficiency and quality of the operation.

[0031] Optionally, one end of the expansion portion extends into the grip portion and is connected to the inner side wall of the grip portion through a connecting block, and a positioning hole and a latching hole communicating with the interior are provided on the outer side wall of the grip portion, and the locking assembly includes:

[0032] The movable bar is arranged on the protection tube and the connecting block is away from the side of the protection tube and has elasticity;

[0033] The moving block is arranged on the moving bar and is clamped on the positioning hole so that the rotator cuff patch is pressed against the inner wall of the protective tube for protection and positioning, or the moving block is clamped on the clamping hole so that the rotator cuff patch is moved to the outside of the protective tube for positioning.

[0034] By adopting the above technical solution, when unlocking is required, the moving block is squeezed out of the snap-fit ​​hole, and the protective tube is moved at the same time. The movement of the protective tube drives the moving bar and the moving block to move, so that the moving block is snap-fitted and installed on the positioning hole for positioning. The method of moving the moving block from the positioning hole to the snap-fit ​​hole is the same, so that the rotator cuff patch can be positioned inside the protective tube or outside the anti-slip tube, thereby improving the efficiency and quality of the operation.

[0035] Optionally, the blocking component includes:

[0036] A sealing cover is rotatably mounted on the protective tube and is provided with a sealing groove and is used to seal or open the avoidance hole;

[0037] The elastic block is arranged on the protective tube and has elasticity and is clamped and installed on the sealing groove for positioning.

[0038] By adopting the above technical solution, blocking or punching the avoidance hole is achieved during the preparation work before the operation. The cover is moved to separate the cover from the elastic block, so that the avoidance hole can be opened. When blocking is required, the cover is rotated so that the elastic block is snap-fitted and installed on the sealing groove for positioning, which greatly improves the convenience of the process, and can also improve the sealing effect of the avoidance hole, improve the quality of the rotator cuff patch, and improve the quality of the operation.

[0039] Optionally, the connection component includes:

[0040] A plurality of connecting pieces are provided on the plurality of elastic support members and are used to support the rotator cuff patch and can be deformed and wound around the unfolded portion or the rotator cuff patch;

[0041] A plurality of connecting wires are respectively arranged on a plurality of connecting pieces and pass through the rotator cuff patch for connection. The pull wire passes through the connecting piece for connection and the connecting piece and the rotator cuff patch are removed after the connecting wires are cut.

[0042] By adopting the above technical solution, the connecting piece is fixedly installed on multiple elastic support members in advance, and then the pull wire is passed through the connecting piece for positioning, and finally the connecting wire is passed through the connecting piece and the rotator cuff patch for sewing and fixing, so that the connecting piece fixes the rotator cuff patch, multiple elastic support members and the pull wire to each other, and after the rotator cuff patch is installed, the connecting piece can be separated from the rotator cuff patch by cutting the connecting wire, and then the connecting piece can continue to be fixedly connected to the subsequent rotator cuff patch.

[0043] Since the rotator cuff patch has a porous structure, it is difficult to adsorb it using a suction cup, or even if the suction cup can adsorb it, the requirements are very high. Therefore, through the combination of connecting wires and connecting plates, multiple elastic support members and pull wires are connected to the rotator cuff patch, and the connecting wires can be cut when removing it, which greatly improves the convenience of the connection process and improves the efficiency and quality of the operation.

[0044] In summary, this application includes at least one of the following beneficial technical effects:

[0045] 1. The rotator cuff patch is opened under the action of multiple elastic support members and used to maintain the state of the rotator cuff patch, and then the rotator cuff patch is fixed to the rotator cuff, and the rotator cuff patch is separated from the pulling mechanism and the multiple elastic support members, so that the rotator cuff patch surgery can be completed, thereby improving the efficiency and quality of the rotator cuff patch surgery.

[0046] 2. A plurality of elastic support members are used to facilitate wrapping the rotator cuff patch around and storing it on the unfolding portion for storage and positioning, so that the rotator cuff patch can be evenly pressed against the protective mechanism when stored therein, making the pressing force of the rotator cuff patch on the protective mechanism more uniform, thereby making the protective mechanism more stable during operation, and reducing the pulling force of the rotator cuff patch on the pulling mechanism under the elastic force of a plurality of elastic support members, making the entire structure more stable, and improving the efficiency and quality of rotator cuff patch surgery.

[0047] 3. The protective mechanism can protect the rotator cuff patch, improve the quality of the rotator cuff patch, and the rotator cuff patch is pressed against the protective mechanism for positioning, thereby reducing the force of the rotator cuff patch on the pulling mechanism under the elastic force of multiple elastic support members, improving the stability between multiple structures, and thus further improving the efficiency and quality of rotator cuff patch surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the three-dimensional structure of the rotator cuff patch expander;

[0049] Figure 2 yes Figure 1 Schematic cross-section of the middle AA;

[0050] Figure 3 It is a schematic diagram of the partial structure of the rotator cuff patch expander.

[0051] Figure numerals: 1. Grip; 11. Connecting block; 12. Positioning hole; 13. Snap-in hole; 14. Rotator cuff patch; 2. Deployment portion; 3. Stretching device; 31. Elastic support member; 4. Pulling mechanism; 41. Pull wire; 42. Pulling assembly; 43. Reel; 44. Motor; 45. Button; 5. Protective mechanism; 51. Protective tube; 52. Locking assembly; 53. Moving bar; 54. Moving block; 6. Sealing assembly; 61. Sealing cover; 62. Elastic block; 7. Connecting assembly; 71. Connecting piece. DETAILED DESCRIPTION

[0052] The application is described in further detail below.

[0053] The embodiment of the present application discloses a rotator cuff patch expander.

[0054] Reference Figure 1 and Figure 2 The rotator cuff patch spreader includes a holding part 1, an unfolding part 2 and a spreading device 3. The holding part 1 and the unfolding part 2 are coaxially arranged and both have a tubular structure. The outer diameter of the unfolding part 2 is smaller than the inner diameter of the holding part 1. One end of the unfolding part 2 is arranged on the inner wall of the holding part 1 through a connecting block 11 and the other end extends to the outside of the holding part 1. The connecting block 11 is fixedly mounted on the outer wall of the unfolding part 2 and fixedly mounted on the inner wall of the holding part 1. At the same time, a plurality of connecting blocks 11 are arranged in a circular array around the axis of the unfolding part 2; the spreading device 3 is used to connect with the rotator cuff patch 14 and to control the retraction of the rotator cuff patch 14 for protection, or the spreading device 3 spreads the rotator cuff patch 14 open for maintenance, thereby facilitating the fixation of the rotator cuff patch 14 to the rotator cuff to complete the operation.

[0055] The expansion device 3 includes a plurality of elastic support members 31 and a pulling mechanism 4. The plurality of elastic support members 31 are divided into two groups and are respectively located on both sides of the axis of the unfolding portion 2. One end of the elastic support member 31 is fixedly mounted on the side wall of the unfolding portion 2, and the elastic support member 31 is elastic and extends to the outside of the unfolding portion 2. The plurality of elastic support members 31 are arranged at intervals along the axis of the unfolding portion 2; the plurality of elastic support members 31 are detachably connected to the rotator cuff patch 14 through the connecting assembly 7, and the plurality of elastic support members 31 maintain the state of the rotator cuff patch 14 under the action of elastic force, thereby facilitating fixation during surgery.

[0056] The connecting component 7 includes multiple connecting pieces 71 and multiple connecting lines. The multiple connecting pieces 71 and the multiple connecting lines are arranged in a one-to-one correspondence, and the multiple connecting pieces 71 and the multiple elastic support members 31 are arranged in a one-to-one correspondence. The connecting piece 71 is fixedly installed on the end of the elastic support member 31 away from the unfolding part 2 through a fixing line; the connecting line passes through the connecting piece 71 and the rotator cuff patch 14 to fix the multiple connecting pieces 71 and the rotator cuff patch 14, thereby realizing the fixed connection between the elastic support member 31 and the rotator cuff patch 14. At the same time, after cutting the connecting line, the connecting piece 71 and the elastic support member 31 can be separated from the rotator cuff patch 14.

[0057] The connecting piece 71 has a certain elasticity, so that the connecting piece 71 can support the rotator cuff patch 14 and can deform. When the connecting line pulls the elastic support member 31 to deform, the connecting piece 71 also deforms, so that the connecting piece 71 and the elastic support member 31 are entangled and pressed against each other, or the connecting piece 71 is pressed against the unfolded part 2 or the rotator cuff patch 14.

[0058] The pulling mechanism 4 is used to be detachably connected to the rotator cuff patch 14 and drive the rotator cuff patch 14 to be stored and wrapped around the unfolding portion 2 for positioning. After the pulling mechanism 4 is unlocked, the rotator cuff patch 14 is stretched open by the elastic force of multiple elastic support members 31.

[0059] Reference Figure 1 and Figure 2 The pulling mechanism 4 includes two groups of pull wires 41 and two pulling components 42. The two groups of pull wires 41 are respectively located on both sides of the axis of the unfolding part 2. Multiple pull wires 41 in each group of pull wires 41 are respectively connected to the connecting pieces 71 located at multiple elastic support members 31. The pull wires 41 pass through the connecting pieces 71 and then pass through the unfolding part 2 to move into the holding part 1. The pull wires 41 are connected to the elastic support members 31 through the connecting pieces 71. At the same time, the connecting pieces 71, the elastic support members 31 and the pull wires 41 are all connected to each other. Then, the required rotator cuff patch 14 is connected to the connecting piece 71 through the connecting wires. After the rotator cuff patch 14 is fixed to the rotator cuff, the connecting piece 71 can be separated from the rotator cuff patch 14 by cutting the connecting wires, and then the required rotator cuff patch 14 is replaced to continue the operation.

[0060] The two pulling components 42 are respectively used to connect with the two groups of pull wires 41 and to drive the two groups of pull wires 41 to move. One of the pulling components 42 starts to drive the multiple pull wires 41 located on one side of the unfolding part 2 to move simultaneously, thereby pulling the rotator cuff patch 14 located on one side of the axis of the unfolding part 2 to be wound onto the unfolding part 2, and the rotator cuff patch 14 is spirally stored on the unfolding part 2 for positioning; then the other pulling component 42 starts to pull the rotator cuff patch 14 located on the other side of the axis of the unfolding part 2 to continue to be wound onto the rotator cuff patch 14 that has been rolled up to the unfolding part 2 for positioning; when the rotator cuff patch 14 is unfolded at the same time, the operation is reversed, and the pulling component 42 releases the pull wire 41, so that the rotator cuff patches 14 located on both sides of the axis of the unfolding part 2 are unfolded in two steps under the elastic force of the elastic support member.

[0061] The pulling assembly 42 includes a winding disk 43, a motor 44 and a button 45. The winding disk 43 is rotatably installed on the inner wall of the gripping part 1, and the multiple pull wires 41 located on one side of the axis of the unfolding part 2 are all wound on the winding disk 43 for positioning; the motor 44 is fixedly installed on the inner wall of the gripping part 1 and the output shaft is connected to the winding disk 43, thereby driving the winding disk 43 to rotate, and the button 45 is installed on the outer wall of the gripping part 1 and is used to control the start and stop and forward and reverse rotation of the motor 44. Pressing the button 45 controls the motor 44 to start and rotate, and the winding disk 43 rotates and rewinds to pull the pull wire 41, and then pressing the button 45 stops and positions the winding disk 43; pressing the button 45 controls the motor 44 to drive the winding disk 43 to rotate, thereby releasing the pull wire 41.

[0062] Reference Figure 1-Figure 3 The expansion device 3 also includes a protective mechanism 5, which is slidably mounted on the grip portion 1 and extends to the outside of the grip portion 1, causing the rotator cuff patch 14 to be pressed and stored within the protective mechanism 5 for protection and positioning. The protective mechanism 5 includes a protective tube 51, a locking assembly 52, and a blocking assembly 6. One end of the protective tube 51 is coaxially slidably mounted on the inner wall of the grip portion 1, and the other end extends to the outside of the grip portion 1. The expansion portion 2 is located inside the protective tube 51. Both ends of the protective tube 51 are open, and a clearance hole is formed at one end facing away from the grip portion 1. The protective tube 51 moves and causes the rotator cuff patch 14 to move into the protective tube 51 through the clearance hole for protection, or the protective tube 51 approaches the grip portion 1, causing the rotator cuff patch 14 to move to the outside of the protective tube 51. A guide angle is provided on the inner wall of the end of the protective tube 51 near the rotator cuff patch 14 to facilitate the entry of the rotator cuff patch 14.

[0063] The locking assembly 52 is used to position the protective tube 51. A positioning hole 12 and a snap-in hole 13 connected to the interior are provided on the outer wall of the gripping portion 1. The positioning hole 12 and the snap-in hole 13 are spaced apart along the axis of the gripping portion 1, and the snap-in hole 13 is located on the side of the positioning hole 12 close to the unfolding portion 2. At the same time, the protective tube 51 is located on the side of the connecting block 11 close to the unfolding portion 2. A connecting groove is provided in the protective tube 51, and the connecting groove is used to connect the positioning hole 12 and the snap-in hole 13.

[0064] The locking assembly 52 includes a moving bar 53 and a moving block 54. The moving bar 53 is fixedly mounted on one end of the protective tube 51 located inside the gripping portion 1, and the moving bar 53 extends along the axial direction of the gripping portion 1 from one side of the connecting block 11 to the side of the connecting block 11 away from the protective tube 51; the moving block 54 is fixed on the end of the moving bar 53 away from the protective tube 51, and the moving block 54 is clamped and mounted on the positioning hole 12 or the clamping hole 13 under the elastic force of the moving bar 53 for positioning.

[0065] When the moving block 54 is clamped and installed on the clamping hole 13, the rotator cuff patch 14 is located in the protective tube 51 for protection, the moving block 54 is squeezed away from the clamping hole 13, and the protective tube 51 is pushed to move. The protective tube 51 moves and drives the moving bar 53 to push the moving block 54 out of the clamping hole 13 and slide to the connecting groove. The protective tube 51 continues to move close to the connecting block 11, so that the protective tube 51 rests on the connecting block 11 for positioning, and when the moving block 54 is clamped and installed on the positioning hole 12 under the action of the moving bar 53, the rotator cuff patch 14 is located outside the protective tube 51 and is in an expanded state. When it needs to move back, the moving block 54 is squeezed away from the positioning hole 12, and the protective tube 51 is pulled back, so that the moving block 54 continues to be clamped and installed on the clamping hole 13 for positioning.

[0066] The protective mechanism 5 also includes a sealing component 6, which is used to seal or open the avoidance hole. The sealing component 6 includes a sealing cover 61 and an elastic block 62. The sealing cover 61 is rotatably set on the protective tube 51, and a sealing groove is opened on the inner wall of the sealing cover 61; the elastic block 62 is fixedly installed on the protective tube 51 and is elastic. The sealing cover 61 rests on the protective tube 51 to seal the tube mouth of the protective tube 51, that is, to seal the avoidance hole, and the elastic block 62 is snap-fitted and installed on the sealing groove for positioning; when unlocking is required, the sealing cover 61 is moved to squeeze the elastic block 62, so that the elastic block 62 is disengaged from the sealing groove, thereby opening the avoidance hole.

[0067] The working principle of the embodiment of this application is as follows:

[0068] Pressing the button 45 drives one of the winding disks 43 to rotate, and the rotation of the winding disk 43 drives multiple pull wires 41 to move, thereby pulling the multiple elastic support members 31 and the rotator cuff patch 14 located on one side of the unfolding part 2 to be wound around the unfolding part 2, and then continue to drive the other winding disk 43 to rotate, so that the multiple elastic support members 31 and the rotator cuff patch 14 located on the other side of the unfolding part 2 are wound around the already wound rotator cuff patch 14, open the cover 61, push the protective tube 51 so that the already wound rotator cuff patch 14 is moved into the protective tube 51, and the rotator cuff patch 14 is pressed against the inner wall of the protective tube 51 for positioning, and close the cover 61, so that the rotator cuff patch 14 can be protected.

[0069] During the operation, the cover 61 is opened and the protective tube 51 is pushed to move the rotator cuff patch 14 to the outside of the protective tube 51. The two winding disks 43 rotate successively, and the rotator cuff patch 14 is opened under the elastic force of multiple elastic support members 31. Then the holding part 1 can be moved to move the rotator cuff patch 14 to the rotator cuff, and then the rotator cuff patch 14 is fixed. After the fixation is completed, the connecting line at the connecting piece 71 is cut off, so that the connecting piece 71 is separated from the rotator cuff patch 14, thereby greatly improving the surgical effect and efficiency.

[0070] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rotator cuff patch expander, characterized by: It comprises a gripping portion (1), an unfolding portion (2) and an opening device (3), wherein the opening device (3) comprises: A plurality of elastic support members (31) are arranged on the unfolding portion (2) and extend to both sides of the axis of the unfolding portion (2); the plurality of elastic support members (31) are detachably connected to the rotator cuff patch (14) through the connecting assembly (7) and maintain the state of the rotator cuff patch (14) under the action of elastic force; A pulling mechanism (4) is used for being detachably connected to the rotator cuff patch (14) and driving the rotator cuff patch (14) to be stored and wound around the unfolding portion (2) for positioning, and after the pulling mechanism (4) is unlocked, the rotator cuff patch (14) is stretched open by the elastic force of the plurality of elastic support members (31); The protection mechanism (5) is slidably arranged on the gripping portion (1) and extends to the outside of the gripping portion (1) so as to press the rotator cuff patch (14) into the protection mechanism (5) for protection and positioning.

2. The rotator cuff patch expander according to claim 1, characterized in that: The pulling mechanism (4) comprises: Two sets of pull lines (41) are respectively connected to the rotator cuff patches (14) located on both sides of the axis of the unfolded portion (2); The two pulling assemblies (42) are respectively connected to the two sets of pull wires (41) and are used to reel in or release the pull wires (41). The two pulling assemblies (42) are sequentially activated to drive the rotator cuff patches (14) located on both sides of the axis of the unfolding portion (2) to be reeled in and wound onto the unfolding portion (2).

3. The rotator cuff patch expander according to claim 2, characterized in that: The pulling assembly (42) includes: A winding disk (43) is rotatably mounted on the gripping portion (1), and one end of the pull wire (41) is connected to the winding disk (43) and wound on the winding disk (43); A motor (44) for driving the winding reel (43) to rotate; A button (45) is provided on the gripping portion (1) and is used to control the start, stop, and forward and reverse rotation of the motor (44).

4. The rotator cuff patch expander according to claim 2, characterized in that: The pull wires (41) are arranged in plurality along the axis of the unfolding portion (2) and pull the rotator cuff patch (14) to be spirally wound around the unfolding portion (2) for positioning.

5. The rotator cuff patch expander according to claim 1, characterized in that: The protection mechanism (5) comprises: A protective tube (51) is slidably arranged on the gripping portion (1) and is provided with a clearance hole for the rotator cuff patch (14) to pass through, so that the rotator cuff patch (14) is pressed against the inner wall of the protective tube (51) for protection and positioning or is moved to the outside of the protective tube (51); A locking assembly (52) for positioning the protective tube (51); The blocking component (6) controls the opening or blocking of the avoidance hole.

6. The rotator cuff patch expander according to claim 5, characterized in that: One end of the unfolding portion (2) extends into the gripping portion (1) and is connected to the inner side wall of the gripping portion (1) via a connecting block (11). A positioning hole (12) and a latching hole (13) communicating with the inner side are provided on the outer side wall of the gripping portion (1). The locking assembly (52) comprises: A movable bar (53) is provided on the protective tube (51) and is located on a side of the connecting block (11) away from the protective tube (51) and has elasticity; The moving block (54) is arranged on the moving bar (53) and is snap-fitted on the positioning hole (12) so that the rotator cuff patch (14) is pressed against the inner wall of the protective tube (51) for protection and positioning. Alternatively, the moving block (54) is snap-fitted on the snap-fitting hole (13) so that the rotator cuff patch (14) is moved to the outside of the protective tube (51) for positioning.

7. The rotator cuff patch expander according to claim 6, characterized in that: The protective tube (51) is provided with a guide angle for facilitating the entry of the rotator cuff patch (14).

8. The rotator cuff patch expander according to claim 6, characterized in that: The blocking component (6) comprises: A sealing cover (61) is rotatably mounted on the protective tube (51) and is provided with a sealing groove and is used to seal or open the avoidance hole; The elastic block (62) is arranged on the protective tube (51) and has elasticity and is clamped and mounted on the sealing groove for positioning.

9. The rotator cuff patch expander according to claim 2, characterized in that: The connecting component (7) comprises: A plurality of connecting pieces (71) are arranged on the plurality of elastic support members (31) and are used to support the rotator cuff patch (14) and can be deformed and then wound around the unfolding portion (2) or the rotator cuff patch (14); A plurality of connecting wires are respectively arranged on the plurality of connecting pieces (71) and pass through the rotator cuff patch (14) for connection. The pull wire (41) passes through the connecting piece (71) for connection and the connecting piece (71) and the rotator cuff patch (14) are removed after the connecting wires are cut.

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