Fixing device for rotator cuff patch

Abstract

The utility model relates to a rotator cuff patch fixator, and relates to the technical field of rotator cuff injury repair, the fixator comprises an implanting machine and a fixing piece, the implanting machine is used for nailing the fixing piece into a rotator cuff and fixing a rotator cuff patch on the rotator cuff, and the implanting machine comprises a shell, a fixing piece and a fixing piece, the two groups of guide rails are arranged in the shell and are used for guiding the fixed part; the pushing part is used for pushing the fixing part to slide in the shell, pushing the fixing part out of the shell and nailing the fixing part into the rotator cuff; and the driving piece is used for driving the pushing piece to reciprocate. The shell abuts against the rotator cuff patch, the pushing piece is driven by the driving piece to slide towards the side close to the rotator cuff patch, the fixing piece on the guide rail is pushed by the pushing piece to slide forwards, and finally the fixing piece on the guide rail is pushed to penetrate through the rotator cuff patch and be inserted into the rotator cuff tissue, so that the rotator cuff patch is fixed; the operation difficulty of doctors is reduced; and the implantation efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of rotator cuff injury repair, and in particular to a rotator cuff patch fixator. Background Technology

[0002] In shoulder surgery, rotator cuff patches are often used to repair damaged rotator cuff tissue. Fixing the patch is a crucial step in rotator cuff injury repair surgery.

[0003] Currently, common fixation methods include using traditional sutures or other complex fixation devices. These methods often require longer surgical times and higher operating skills, increasing the difficulty of the surgery for doctors and resulting in low implantation efficiency. Utility Model Content

[0004] To reduce the difficulty of surgery for doctors and improve implantation efficiency, this application provides a rotator cuff patch fixator.

[0005] This application provides a rotator cuff patch fixator, which adopts the following technical solution:

[0006] A rotator cuff patch fixation device includes an implantation machine and a fixation element. The implantation machine is used to fasten the fixation element into the rotator cuff and fix the rotator cuff patch to the rotator cuff. The implantation machine includes:

[0007] A housing, wherein the interior of the housing is hollow;

[0008] Guide rails, two sets of guide rails are disposed inside the housing and used to guide the fixing components;

[0009] A pusher, which is slidably disposed on a guide rail and used to push a fastener to slide within the housing, the pusher pushing the fastener out of the housing and used to fasten it to the shoulder sleeve;

[0010] A driving component, which is disposed within the housing and is used to drive the reciprocating motion of the pusher.

[0011] By adopting the above technical solution, the shell is pressed against the rotator cuff patch, and the driving component drives the pushing component to slide closer to the rotator cuff patch. The pushing component pushes the fixing component on the guide rail to slide forward, and finally pushes the fixing component on the guide rail through the rotator cuff patch and into the rotator cuff tissue, thereby fixing the rotator cuff patch, reducing the surgical difficulty for doctors and improving the implantation efficiency.

[0012] Furthermore, the guide rail includes a unidirectional sliding section and a guide section. The unidirectional sliding section is provided with multiple sets of protrusions at intervals. The end of each protrusion near the driving member has an inclined surface that facilitates the sliding of the fixing member over the protrusion. The multiple sets of protrusions are used to allow the fixing member to slide unidirectionally on the guide rail. The guide section is located on the end of the unidirectional sliding section away from the driving member. The guide section is used to precisely guide the sliding of the fixing member.

[0013] By adopting the above technical solution, when the fastener slides away from the driving component on the one-way sliding section, the inclined surfaces on multiple sets of protrusions guide the fastener, making it easier for the fastener to slide past the protrusions; when the fastener slides closer to the driving component on the one-way sliding section, the protrusions block the fastener from sliding closer to the driving component, thus achieving one-way sliding of multiple fasteners on the one-way sliding section. After the fastener enters the guide section, the guide section precisely guides the sliding of the fastener, making it easier to insert the fastener into the shoulder sleeve patch.

[0014] Furthermore, the actuating element includes:

[0015] A sliding block, which is sleeved on two sets of guide rails and slides along the axis of the guide rails;

[0016] A push plate is disposed on one end of the sliding block and located on one side of the two sets of guide rails;

[0017] A push block is provided on the side of the push plate near the guide rail via an elastic sheet. Multiple sets of push blocks are spaced apart on the push plate. The multiple sets of push blocks cooperate with the guide rail and are used to push multiple sets of fixing members to slide unidirectionally on the guide rail.

[0018] By adopting the above technical solution, when the driving component drives the sliding block to slide away from the driving component, the sliding block drives multiple sets of pushing blocks to slide through the pushing plate, and the multiple sets of pushing blocks push multiple sets of fixed components to slide on the guide rail; when the driving component drives the sliding block to slide closer to the driving component, the sliding block drives multiple sets of pushing blocks to slide through the pushing plate. Since the unidirectional sliding section prevents the fixed components from sliding in the opposite direction, the pushing block in contact with the fixed component causes the elastic sheet to deform, which makes it easier for the pushing block to pass over the fixed component and move to the rear end of the next set of fixed components, and makes it easier for the next set of fixed components to move forward.

[0019] Furthermore, the driving element includes:

[0020] A drive motor, wherein the drive motor is disposed within the housing;

[0021] A threaded head, which is mounted on the output shaft of a drive motor and rotates under the drive of the drive motor;

[0022] A sliding sleeve is slidably disposed within the housing and connected to a sliding block. The sliding sleeve is threadedly connected to a threaded head and slides along the axis of the guide rail under the drive of the threaded head.

[0023] A control component, which is mounted on the housing and is used to control the start and stop of the drive motor.

[0024] By adopting the above technical solution, the control component controls the start and stop of the drive motor, the drive motor drives the threaded head to rotate, and then drives the sliding sleeve to slide inside the housing, thereby facilitating the sliding of the drive sliding block.

[0025] Furthermore, the control component includes:

[0026] A control board is disposed inside the housing and electrically connected to the drive motor, and the control board is used to control the state of the drive motor.

[0027] A forward rotation button is mounted on the housing and controls the drive motor to rotate forward via a control panel.

[0028] A reverse button is provided on the housing and controls the reverse of the drive motor via a control panel.

[0029] By adopting the above technical solution, when the forward rotation button is pressed, the control board drives the motor to rotate forward and drives the sliding sleeve to slide closer to the shoulder sleeve; when the reverse rotation button is pressed, the control board drives the motor to rotate in reverse and drives the sliding sleeve to slide away from the shoulder sleeve, thus realizing the reciprocating sliding of the sliding sleeve, thereby pushing multiple sets of fixing parts on the guide rail into the shoulder sleeve patch in sequence.

[0030] Furthermore, the housing is provided with a display screen electrically connected to the control board, and the display screen is used to display the sliding distance of the sliding sleeve.

[0031] By adopting the above technical solution, it is convenient to monitor the sliding distance of the sliding sleeve in real time through the display screen, thus avoiding the sliding sleeve from not sliding into place.

[0032] Furthermore, the sliding sleeve is provided with limiting components, which are located at both ends of the sliding sleeve axis and are used to limit the positional relationship between the threaded head and the sliding sleeve.

[0033] By adopting the above technical solution, the limiting block limits the position of the threaded head and the sliding sleeve, reducing the probability of the threaded head sliding out of the sliding sleeve.

[0034] Furthermore, the fixing member has a U-shaped structure, with its two ends respectively fitted onto two sets of guide rails, and a stepped groove is provided on the U-shaped bottom of the fixing member to facilitate the pushing block to push the fixing member to slide on the guide rail.

[0035] By adopting the above technical solution, when the fastener enters the guide section, the push block is pressed against the stepped groove, thereby pushing the fastener to slide towards the shoulder sleeve patch. Finally, the two ends of the fastener pass through the shoulder sleeve patch and are inserted into the shoulder sleeve tissue or inside, while the bottom of the fastener is pressed against the shoulder sleeve patch, thereby fixing the shoulder sleeve patch to the shoulder sleeve tissue.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] By pressing the housing against the rotator cuff patch, pressing the forward button causes the drive motor to rotate forward, which in turn moves the sliding block closer to the rotator cuff patch. The sliding block then moves the push plate, which in turn moves multiple sets of push blocks forward, pushing multiple sets of fixation members on the guide rail. Finally, the fixation members on the guide section pass through the rotator cuff patch and are inserted into the rotator cuff tissue, thus fixing the rotator cuff patch. Pressing the reverse button causes the drive motor to reverse, which in turn moves the push plate away from the rotator cuff patch. At the same time, the protrusion prevents the fixation members from sliding backward, allowing the push block to pass over the fixation members and return to its original position under the action of the elastic plate. This makes it easier to insert the fixation member closest to the rotator cuff patch into the rotator cuff tissue next time, reducing the surgical difficulty for doctors and improving implantation efficiency. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the fixture structure of this application;

[0039] Figure 2 This is a schematic diagram of the fastener structure of this application;

[0040] Figure 3 This is a schematic diagram of the fixture structure of this application, in which the housing and the side wall of the sliding sleeve are viewed in section;

[0041] Figure 4 yes Figure 3 Enlarged diagram of section A in the middle;

[0042] Figure 5 This is a schematic diagram of the exploded structure of the actuator in this application;

[0043] Figure 6 yes Figure 3 Enlarged schematic diagram of section B.

[0044] Reference numerals: 1. Housing; 11. Drive unit; 12. Rod body; 2. Guide rail; 21. Sliding section; 211. Protrusion; 212. Inclined surface; 22. Guide section; 3. Pushing component; 31. Sliding block; 32. Push plate; 33. Pushing block; 34. Elastic sheet; 4. Drive unit; 41. Drive motor; 42. Threaded head; 43. Sliding sleeve; 44. Control component; 441. Forward button; 442. Reverse button; 5. Display screen; 6. Limiting component; 7. Fixing component; 71. Step groove; 72. Through hole. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0046] This application discloses a shoulder sleeve patch fixator.

[0047] Reference Figure 1 and Figure 2 A rotator cuff patch fixation device includes an implantation machine and a fixation element 7, the implantation machine being used to pin the fixation element 7 into the rotator cuff and fix the rotator cuff patch to the rotator cuff.

[0048] Reference Figure 2 The fixation member 7 has a U-shaped structure. Both ends of the fixation member 7 are used to insert into the rotator cuff. The bottom of the U-shape away from the ends of the fixation member 7 is provided with a stepped groove 71 to facilitate the sliding of the fixation member 7. The implantation machine presses against the stepped groove 71 and then pushes the two ends of the fixation member 7 through the rotator cuff patch and rotator cuff tissue or rotator cuff bone in turn. Finally, the end of the fixation member 7 away from the stepped groove 71 presses against the rotator cuff patch, thereby fixing the rotator cuff patch to the rotator cuff tissue.

[0049] Reference Figure 1 and Figure 3 The implantation machine includes a housing 1, a guide rail 2, a pusher 3, and a drive 4. The housing 1 includes a drive part 11 and a rod part 12. The drive part 11 has a cuboid structure, which makes it easy for the user to hold the implantation machine. The rod part 12 has a long rod structure, and the diameter of the rod part 12 is smaller than the height of the drive part 11. The rod part 12 is easy to insert into the rotator cuff for implantation of the fixation device 7. The interiors of the drive part 11 and the rod part 12 are hollow and interconnected.

[0050] Reference Figure 2 , Figure 3 and Figure 4 The guide rail 2 is fixedly installed inside the rod body 12. To improve the guiding effect of the guide rail 2 on the fixing member 7 and prevent the fixing member 7 from rotating, two sets of guide rails 2 are installed inside the rod body 12. The two sets of guide rails 2 guide both ends of the same set of fixing members 7 respectively. The rotation of the fixing member 7 is prevented by the combined action of the two sets of guide rails 2. Through holes 72 are opened on both ends of the fixing member 7 to facilitate the passage of the guide rail 2. The guide rail 2 includes a one-way sliding section 21 and a guiding section 22. The one-way sliding section 21 is spaced apart. Multiple sets of protrusions 211 are provided. The end of the protrusion 211 near the drive member 4 has an inclined surface 212 that facilitates the sliding of the fixing member 7 over the protrusion 211. The multiple sets of protrusions 211 cooperate with the one-way sliding section 21 and enable the fixing member 7 to slide unidirectionally on the one-way sliding section 21. The guide section 22 is fixedly installed on the end of the one-way sliding section 21 away from the drive member 4. The diameter of the guide section 22 is equal to the diameter of the through hole 72 on the fixing member 7. The guide section 22 is used to precisely guide the sliding of the fixing member 7.

[0051] Reference Figure 3 and Figure 5The pusher 3 is slidably disposed inside the housing 1. The pusher 3 is used to push the fixing member 7 to slide within the housing 1. The pusher 3 pushes the fixing member 7 out of the housing 1 and nails it onto the shoulder sleeve. The pusher 3 includes a sliding block 31, a push plate 32 and a pusher block 33. The sliding block 31 is sleeved on two sets of guide rails 2 and slides along the axis of the guide rails 2. The sliding block 31 is connected to the drive member 4 and reciprocates under the drive of the drive member 4. The push plate 32 is disposed on one end of the sliding block 31 and is located on one side of the two sets of guide rails 2. In order to improve the pushing effect of the push plate 32 on the fixing member 7, two sets of push plates 32 are provided, and the two sets of push plates 32 are respectively located on opposite sides of the two sets of guide rails 2.

[0052] Reference Figure 3 and Figure 5 The push block 33 is fixedly mounted on the side of the push plate 32 near the guide rail 2 by the elastic sheet 34. When the push plate 32 slides towards the drive member 4 under the drive of the sliding block 31, the push plate 32 abuts against the next set of fixing members 7. Due to the obstruction of the fixing members 7 by the multiple sets of protrusions 211, the fixing members 7 cannot slide backward, which causes the elastic sheet 34 to deform and rotate the push block 33 away from the guide rail 2, finally avoiding the next set of fixing members 7, which facilitates subsequent push and fixation. The component 7 slides on the guide rail 2; when the push plate 32 slides backward and avoids the next set of fixed components 7, the sliding block 31 drives the push plate 32 to slide away from the drive component 4, thereby causing the push block 33 to press against the stepped groove 71 at the tail of the fixed component 7 that was just avoided, and pushes the fixed component 7 to slide on the guide rail 2 along with the push plate 32. Due to the guiding effect of the inclined surface 212 of the protrusion 211, the fixed component 7 can pass over the protrusion 211 and slide on the guide rail 2 under the push of the push block 33.

[0053] Reference Figure 2 and Figure 6 The driving component 4 is disposed inside the driving part 11. The driving component 4 is used to drive the sliding block 31 to reciprocate. The driving component 4 includes a driving motor 41, a threaded head 42, and a sliding sleeve 43. The driving motor 41 is fixedly installed inside the driving part 11. The threaded head 42 is fixedly installed on the output shaft of the driving motor 41 and can rotate under the drive of the driving motor 41. The sliding sleeve 43 is slidably installed inside the housing 1 and is fixedly connected to the sliding block 31. The threaded head 42 is disposed inside the sliding sleeve 43 and is threadedly connected to the sliding sleeve 43. When the threaded head 42 rotates, it drives the sliding sleeve 43 to slide along the axis of the guide rail 2 inside the housing 1, thereby realizing the reciprocating sliding of the sliding sleeve 43 driven by the driving motor 41.

[0054] Reference Figure 1 and Figure 6The drive unit 4 also includes a control component 44, which includes a control board, a forward rotation button 441, and a reverse rotation button 442. The control board is fixedly installed inside the housing 1 and is electrically connected to the drive motor 41. The control board is used to control the state of the drive motor 41. The forward rotation button 441 is fixedly installed on the housing 1 and is electrically connected to the control board. The forward rotation button 441 controls the forward rotation of the drive motor 41 through the control board. In order to control the sliding distance of the sliding block 31, when the forward rotation button 441 is pressed, the drive motor 41 rotates forward a specified number of times, thereby causing the sliding block 31 to slide a specified distance. The reverse rotation button 442 is fixedly installed on the housing 1 and is electrically connected to the control board. The reverse rotation button controls the reverse rotation of the drive motor 41 through the control board. When reversing, the number of reverse rotations of the drive motor 41 is the same as the number of forward rotations, so as to facilitate the sliding block 31 to slide to the initial position.

[0055] Reference Figure 1 and Figure 6 The housing 1 is provided with a display screen 5 that is electrically connected to the control board. The control board converts the number of rotations of the drive motor 41 into the sliding distance of the sliding sleeve 43 and displays it on the display screen 5. In this embodiment, the display screen 5 is a touch display screen 5. The number of forward rotations of the drive motor 41 can be adjusted through the touch display screen 5, thereby fine-tuning the fixing depth of the fixing member 7.

[0056] Reference Figure 6 The sliding sleeve 43 is provided with a limiting element 6, which consists of two sets of limiting rings fixed inside the sliding sleeve 43. The two sets of limiting rings are located at both ends of the axis of the sliding sleeve 43, and the two sets of limiting blocks are used to limit the position of the threaded head 42 and the sliding sleeve 43.

[0057] Reference Figures 1-6 When using the device, place the rotator cuff patch on the rotator cuff that needs repair. Install multiple sets of fixation pieces 7 at intervals on the guide rail 2 beforehand. Then, press the housing 1 against the rotator cuff patch. The user presses the forward rotation button 441, causing the drive motor 41 to rotate forward and slide the sliding block 31 towards the rotator cuff. The sliding block 31, through the push plate 32, drives multiple sets of push blocks 33 to slide the fixation piece 7 one position on the guide rail 2, ultimately pushing the fixation piece 7 on the guide section 22 through the rotator cuff patch and into the rotator cuff tissue. Then, press the reverse rotation button 442 to reverse the drive motor 41. The sliding block 31 drives multiple sets of push blocks 33 to slide, and simultaneously, under the action of the elastic plate 34 and the protrusion 211, the multiple sets of push blocks 33 pass over the fixation piece 7, allowing them to return to their original positions. This facilitates the insertion of the fixation piece 7 closest to the rotator cuff patch into the rotator cuff tissue next time, reducing the surgical difficulty for doctors and improving implantation efficiency.

[0058] The working principle of this application embodiment is as follows:

[0059] The housing 1 is pressed against the rotator cuff patch. Pressing the forward rotation button 441 causes the drive motor 41 to rotate forward, which drives the sliding block 31 to slide closer to the rotator cuff patch. The sliding block 31 drives the push plate 32 to slide, which in turn drives the multiple sets of fixing members 7 on the guide rail 2 to slide forward through the multiple sets of push blocks 33. Finally, the fixing members 7 on the guide section 22 are pushed through the rotator cuff patch and inserted into the rotator cuff tissue to fix the rotator cuff patch. Then, pressing the reverse rotation button 442 causes the drive motor 41 to reverse, which drives the push plate 32 to slide away from the rotator cuff patch. At the same time, the protrusion 211 prevents the fixing members 7 from sliding backward, so that the push block 33 passes over the fixing members 7 and returns to its original position under the action of the elastic plate 34. This makes it easier to insert the fixing member 7 closest to the rotator cuff patch into the rotator cuff tissue next time, reducing the surgical difficulty for doctors and improving implantation efficiency.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shoulder and cuff patch fixator, characterized in that: The device includes an implantation machine and a fixation piece (7), the implantation machine being used to fasten the fixation piece (7) into the rotator cuff and fix the rotator cuff patch to the rotator cuff, the implantation machine comprising: The shell (1) is hollow inside; Guide rails (2), two sets of guide rails (2) are arranged inside the housing (1) and used to guide the fasteners (7); Pushing member (3), which is slidably disposed on guide rail (2) and used to push fixing member (7) to slide within housing (1), pushing member (3) to push fixing member (7) out of housing (1) and used to fasten to shoulder sleeve; The driving component (4) is disposed inside the housing (1) and is used to drive the pusher (3) to reciprocate.

2. The shoulder sleeve patch fixator according to claim 1, characterized in that: The guide rail (2) includes a one-way sliding section (21) and a guide section (22). The one-way sliding section (21) is provided with multiple sets of protrusions (211) at intervals. The end of the protrusion (211) near the drive member (4) is provided with an inclined surface (212) to facilitate the sliding of the fixing member (7) over the protrusion (211). The multiple sets of protrusions (211) are used to allow the fixing member (7) to slide unidirectionally on the guide rail (2). The guide section (22) is provided on the end of the one-way sliding section (21) away from the drive member (4). The guide section (22) is used to accurately guide the sliding of the fixing member (7).

3. The shoulder sleeve patch fixator according to claim 2, characterized in that: The pusher (3) includes: Sliding block (31), the sliding block (31) is sleeved on two sets of guide rails (2) and slides along the axis of the guide rails (2); A push plate (32) is disposed on one end of a sliding block (31) and located on one side of two sets of guide rails (2); Pushing block (33) is set on the side of push plate (32) near guide rail (2) by elastic sheet (34). Multiple sets of pushing blocks (33) are arranged at intervals on push plate (32). Multiple sets of pushing blocks (33) cooperate with guide rail (2) and are used to push multiple sets of fixing parts (7) to slide unidirectionally on guide rail (2).

4. The shoulder sleeve patch fixator according to claim 1, characterized in that: The driving component (4) includes: A drive motor (41) is disposed inside the housing (1); A threaded head (42) is mounted on the output shaft of a drive motor (41) and rotates under the drive of the drive motor (41). The sliding sleeve (43) is slidably disposed in the housing (1) and connected to the sliding block (31). The sliding sleeve (43) is threadedly connected to the threaded head (42) and slides along the axis of the guide rail (2) under the drive of the threaded head (42). A control component (44) is disposed on the housing (1) and is used to control the start and stop of the drive motor (41).

5. The shoulder sleeve patch fixator according to claim 4, characterized in that: The control component (44) includes: A control board is disposed inside the housing (1) and electrically connected to the drive motor (41). The control board is used to control the state of the drive motor (41). A forward rotation button (441) is provided on the housing (1) and controls the drive motor (41) to rotate forward via a control board; A reverse button (442) is provided on the housing (1) and controls the reverse of the drive motor (41) via a control panel.

6. The shoulder sleeve patch fixator according to claim 5, characterized in that: The housing (1) is provided with a display screen (5) electrically connected to the control board. The display screen (5) is used to display the sliding distance of the sliding sleeve (43).

7. A shoulder sleeve patch fixator according to claim 4, characterized in that: The sliding sleeve (43) is provided with a limiting member (6), which is located at both ends of the axis of the sliding sleeve (43) and is used to limit the positional relationship between the threaded head (42) and the sliding sleeve (43).

8. A shoulder sleeve patch fixator according to claim 2, characterized in that: The fixing member (7) has a U-shaped structure. The two ends of the fixing member (7) are respectively sleeved on two sets of guide rails (2). The bottom of the U-shaped fixing member (7) is provided with a stepped groove (71) to facilitate the pushing block (33) to push the fixing member (7) to slide on the guide rail (2).

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