Tendon suture auxiliary device

Abstract

The present invention discloses a tendon suturing auxiliary device, which belongs to the field of medical devices and includes: a surrounding structure, which is provided with a fitting channel, the patient's arm is fitted into the fitting channel, the surrounding structure has relative execution ends, and the execution ends form an operation area, and the operation area exposes the wound on the patient's skin surface; a traction structure, which includes a traction member and a clamping member, the ends of the traction member are respectively connected to the clamping member and the surrounding structure, and the clamping member always has a tendency to move to an initial position under the drive of the traction member; a positioning structure, which includes a positioning needle and a reset member, the surrounding structure has a positioning channel, and the positioning needle always has a tendency to move to a penetration position under the drive of the reset member, and when the positioning needle moves to the penetration position, it contacts the execution ends on both sides. Through the above-mentioned settings, the present invention can solve the problem of the risk of puncture when using a syringe needle to puncture the tendon, and the problem of unstable traction effect of hemostatic forceps clamping the wound edge.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a tendon suturing auxiliary device. Background Art

[0002] When suturing wrist tendons, an incision connecting the skin and the tendon sheath must first be created. The two tendon ends within the tendon sheath are then pulled out of the body through the incision. During this process, the surrounding epidermal tissue must be pulled outward to prevent the wound from closing, thereby better exposing the wound. After trimming the necrotic tissue from the extracted tendon ends, the two tendon segments are sutured. Prior to suturing, the tendon must be positioned outside the patient's body to prevent it from retracting into the tendon sheath due to its own elasticity during suturing. Current surgical procedures primarily use syringe needle puncture to prevent the tendon from retracting outside the body. After puncturing the tendon, the syringe needle is exposed to the patient's wrist, posing a risk of injuring medical staff. Before removing the tendon and performing debridement, the skin near the wound must be positioned to better expose the tendon sheath. Currently, epidermal retraction is primarily achieved using hemostatic forceps, which clamp the wound edges and flip the wound outward under the forceps' own weight. When the patient's arm moves, the hemostat will shake and there is a risk of changing the traction direction on the wound edge, causing the wound to close under the traction of the hemostat and affecting the tendon suturing operation.

[0003] Therefore, a device is designed to locate the edge of the tendon sheath wound and the tendon outside the body. The device is specifically a tendon suturing auxiliary device. Summary of the Invention

[0004] In order to overcome the problems raised in the background technology, a device that can be fixed on the wrist of the patient's arm is proposed. The device is provided with an operating area that can be aligned with the tendon sheath wound, a positioning needle that can be inserted into the sheath structure after puncturing the tendon, and a clamp that can pry open and fix the wound edge in different directions to better expose the tendon sheath, thereby solving the problem of the risk of puncture when puncturing the tendon with a syringe needle, and the problem of unstable traction effect of clamping the wound edge with hemostatic forceps.

[0005] Specifically, the present invention adopts the following technical solution: a surrounding structure with a fitting channel running through it, and the patient's arm is fitted into the fitting channel. The surrounding structure has two opposite execution ends, and an operation area is formed between the execution ends, and the operation area exposes the wound on the patient's skin surface; the surrounding structure fitted on the patient's arm can rotate around the patient's arm, thereby aligning the operation area with the patient's arm, making it convenient for the doctor to perform tendon removal and positioning operations.

[0006] The traction structure includes a traction member and a clamping member, the two ends of the traction member are respectively connected to the clamping member and the surrounding structure, the clamping member always has a tendency to move to an initial position under the drive of the traction member, and the traction structure is symmetrically distributed on the outer wall of the surrounding structure; the operation area between the execution ends is aligned and exposed to the wound opened on the patient's skin surface, and after the traction structures on both sides of the execution ends are deformed and clamp the edges of the wound, the traction structures on both sides pull the edges of the wound in the direction away from the wound, thereby maximally exposing the channel between the wound and the tendon sheath to the operation area; at this time, the sheathing channel of the surrounding structure is aligned with the patient Arm contact, the traction structure contacts the patient's wound skin, so this setting is also conducive to limiting the rotation of the surrounding structure around the patient's arm, thereby maintaining the relative position relationship between the wound and the operation area; the positioning structure, including a positioning needle and a reset member, the surrounding structure has a positioning channel, the positioning channel portion is arranged inside the execution ends on both sides, the positioning needle is arranged to move in the positioning channel, the two ends of the reset member are respectively connected to the positioning needle and the positioning channel, the positioning needle always has a tendency to move to a through position under the drive of the reset member, and the positioning needle contacts the execution ends on both sides when it moves to the through position. The reset member is connected to the part of the positioning channel at one of the execution ends. When the positioning needle crosses the operation area under the drive of the reset member and extends into the part of the positioning channel at the other execution end, the tip of the positioning needle is accommodated in the surrounding structure to avoid the risk of puncture.

[0007] Furthermore, the positioning channel includes a receiving section and a limiting section. The receiving section is provided on the outer wall of one of the execution ends, and the limiting section is provided through the other execution end. The receiving section and the limiting section are aligned one by one. When the positioning needle moves in the positioning channel, it is always partially sleeved on the limiting section. The reset member is elastic and connected to the limiting section. When the reset member drives the positioning needle to move to the penetration position, the positioning needle moves along the central axis of the positioning channel toward the receiving section. As components of the positioning channel, the receiving section and the limiting section can limit the radial movement of the positioning needle. The elastic reset member provides the positioning needle with power to pass through the positioning channel, and the limiting section can also limit the axial movement of the positioning needle in the positioning channel.

[0008] Furthermore, the interior of the limiting section has a pressing end face, which is perpendicular to the central axis of the limiting section; on the side of the pressing end face facing the receiving section, the inner diameter of the limiting section is smaller than the maximum outer diameter of the positioning needle; on the side of the pressing end face facing away from the receiving section, the inner diameter of the limiting section is larger than the maximum outer diameter of the positioning needle. The positioning needle includes a puncture end, which is located in the receiving section when the positioning needle moves to the penetration position. The puncture end has a tip, and the tip never contacts the inner wall of the receiving section when the positioning needle moves to prevent the tip from being worn. The positioning needle also includes an operating end, which is located on both sides of the puncture end in the axial direction of the puncture needle; the outer diameter of the operating end is larger than the minimum inner diameter of the limiting section, and the outer diameter of the puncture end is smaller than the minimum inner diameter of the limiting section; the operating end is always outside the surrounding structure when the positioning needle moves, so that the doctor can control the movement of the positioning needle through the operating end.

[0009] Furthermore, a limiting sheath is provided on the outer wall of the surrounding structure, and one of the ends of the traction member is provided in the limiting sheath, and the traction member can partially extend out of the opening of the limiting sheath; when the clamping member moves to the initial position: the axial length of the traction member is not greater than the axial length of the limiting sheath; the clamping member is tightly pressed against the opening of the limiting sheath, and at the same time, the clamping member is subjected to a force pulling into the limiting sheath, thereby providing a hard limit for the clamping member moving to the initial position, and when the clamping member clamps the edge of the wound, the traction member partially detaches from the limiting sheath and pulls the clamped wound edge outward to achieve the effect of exposing the wound.

[0010] Furthermore, the encircling structure is composed of two semi-rings that can be slidably coupled along the axial direction of the positioning needle. One semi-ring has an insertion end, and the other semi-ring has a slot end. As the insertion end moves within the slot end, the encircling length of the encircling structure and the area of ​​the operating region change. A compression screw is provided through the outer wall of the slot end. As the compression screw rotates circumferentially, it moves into or away from the insertion end. When the compression screw passes through the outer wall of the slot end and compresses the insertion end, it locks the relative movement of the insertion end and the slot end. The patient's arm near the wrist is elliptical. By providing the insertion end and the slot end that can slidably connect and move the two actuating ends toward or away from each other, when the two actuating ends approach each other, the axial cross-section of the encircling channel transforms into an elliptical shape, and the opening of the operating region in the encircling structure is located in the small arc segment of the ellipse. When the two actuating ends move away from each other, the axial cross-section of the encircling channel also transforms into an elliptical shape, and the opening of the operating region in the encircling structure is located in the large arc segment of the ellipse.

[0011] Alternatively, unlike some of the above-mentioned solutions, a connecting piece is provided between the execution ends, the surrounding structure includes a calibration portion and a closing portion, the operation area is provided in the calibration portion, the calibration portion and the closing portion are hinged by a latch, the closing portion can rotate around the latch and form an open loop or a closed loop with the calibration portion so as to be opened and fitted on the patient's arm.

[0012] Furthermore, a cushioning layer is provided on the inner wall of the surrounding structure. This elastic layer does not obstruct the operating area. When the closure and calibration sections form a closed loop, the cushioning layer compresses the patient's arm and stabilizes the relative position of the fixation assist device and the patient's arm. The cushioning layer is divided into two parts, arranged on the inner walls of the calibration and closure sections. When the closure and calibration sections are disassembled, the cushioning layer separates.

[0013] Alternatively, unlike some of the above-mentioned solutions, the outer wall of the surrounding structure is penetrated by a plurality of screw holes, and a limiting stud is provided in the screw hole for movement, and the limiting stud invades or disengages from the fitting channel when moving axially; the end of the limiting stud in the fitting channel is connected to a pressure plate, and when the limiting stud moves, it drives the pressure plate to adjust the positional relationship between the patient's arm and the surrounding structure.

[0014] Furthermore, the pressure plate is rotatably connected to the limiting screw around the center axis of the limiting screw.

[0015] Furthermore, a buffer pad is provided at the end of the pressure plate away from the limiting stud, and both the pressure plate and the buffer pad have an arc that is recessed toward the inner wall of the surrounding structure.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention is provided with a surrounding structure and a traction structure; the surrounding structure fitted on the patient's arm can rotate around the patient's arm, thereby aligning the operation area with the patient's arm, facilitating the doctor's tendon removal and positioning operation; the operation area between the execution ends is aligned with and exposes the wound opened on the patient's skin surface, and after the traction structures on both sides of the execution ends are deformed and clamped The edges of the wound, the traction structures on both sides pull the edges of the wound away from the wound, thereby maximally exposing the channel between the wound and the tendon sheath to the operation area; at this time, the fitting channel of the surrounding structure contacts the patient's arm, and the traction structure contacts the patient's wound skin. Therefore, this arrangement is also conducive to limiting the rotation of the surrounding structure around the patient's arm, thereby maintaining the relative positional relationship between the wound and the operation area;

[0018] 2. The present invention also includes a positioning needle and a reset element. When the positioning needle, driven by the reset element, crosses the operating area and extends into the portion of the positioning channel within the other actuating end, the tip of the positioning needle is contained within the surrounding structure, thereby preventing the risk of puncture. Furthermore, because the positioning needle has a tendency to penetrate the other actuating end under the drive of the reset element, when the doctor withdraws the positioning needle from the actuating end in the opposite direction of the reset, he only needs to place the tendon to be punctured in the path of the positioning channel and release the positioning needle. The positioning needle will then automatically puncture and locate the tendon. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of one of the cross-sectional structures;

[0022] Figure 3 for Figure 1 Another cross-sectional structural diagram of ;

[0023] Figure 4 This is a schematic diagram of the overall structure of Example 2 of the present invention;

[0024] Figure 5 for Figure 4 A schematic diagram of one of the cross-sectional structures;

[0025] Figure 6 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0026] Figure 7 for Figure 6 A schematic diagram of one of the cross-sectional structures;

[0027] Figure 8 This is another schematic diagram of the overall structure of Example 3 of the present invention;

[0028] Figure 9 This is a schematic diagram of an explosion structure of Example 3 of the present invention;

[0029] Figure 10 This is a schematic diagram of the overall structure of Example 4 of the present invention;

[0030] Figure 11 for Figure 10 A schematic diagram of one of the cross-sectional structures;

[0031] In the figure, 1. surrounding structure; 11. fitting channel; 12. execution end; 13. operation area; 14. positioning channel; 141. receiving section; 142. limiting section; 1421. pressing end face; 15. limiting sheath; 2. traction structure; 21. traction member; 22. clamping member; 3. positioning structure; 31. positioning needle; 311. puncture end; 312. operation end; 32. reset member; 4. half ring; 41. insertion end; 42. slot end; 421. pressing screw; 50. connecting member; 51. calibration part; 52. closing part; 53. latch; 531. bolt; 532. nut; 54. buffer layer; 60. screw hole; 61. limiting stud; 611. knob; 62. pressure plate; 621. buffer pad. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] A tendon suturing auxiliary device, such as Figure 1-3 As shown, it includes: a surrounding structure 1, with a fitting channel 11 extending through it, and the patient's arm is fitted into the fitting channel 11. The surrounding structure 1 has two opposite execution ends 12, and an operation area 13 is formed between the execution ends 12. The operation area 13 exposes the wound on the patient's skin surface; the surrounding structure 1 fitted on the patient's arm can rotate around the patient's arm, so as to align the operation area 13 with the patient's arm, which is convenient for the doctor to perform tendon removal and positioning operations.

[0035] The traction structure 2 includes a traction member 21 and a clamping member 22, wherein the clamping member 22 is provided with an elastic part, which can drive the clamping member 22 to be in a clamping state when there is no external force. The two ends of the traction member 21 are respectively connected to the clamping member 22 and the surrounding structure 1. The clamping member 22 always has a tendency to move to an initial position under the drive of the traction member 21. The traction structure 2 is symmetrically distributed on the outer wall of the surrounding structure 1; the operation area 13 between the execution ends 12 is aligned with and exposed to the wound opened on the patient's skin surface. After the traction structures 2 on both sides of the execution ends 12 are deformed and clamp the wound edges, the traction structures 2 on both sides are moved to The edge of the wound is pulled in a direction away from the wound, thereby exposing the channel between the wound and the tendon sheath to the operating area 13 to the maximum extent; at this time, the fitting channel 11 of the surrounding structure 1 contacts the patient's arm, and the traction structure 2 contacts the patient's wound skin. Therefore, this setting is also conducive to limiting the rotation of the surrounding structure 1 around the patient's arm, thereby maintaining the relative position relationship between the wound and the operating area 13; the clamping member 22 contacts the outer wall of the surrounding structure 1 when it moves to the initial position; the traction member 21 stops deforming when the clamping member 22 is in the initial position, or the deformation tendency of the traction member 21 disappears when the clamping member 22 moves to the initial position. When the clamping member 22 moves to the initial position, the portion between the two ends of the traction member 21 still objectively exists. Therefore, one of the conditions for maintaining the clamping member 22 in the initial position is that the shape of the traction member 21 and its relative position relationship with the surrounding structure 1 will be fixed when the clamping member 22 moves to the initial position. To achieve this condition, the traction member 21 needs to be set as a structure that can only move within a specific stroke. When the traction member 21 moves to the maximum stroke, its own deformation limits its possibility of continued deformation; when it moves to the minimum stroke, its own deformation or the structure that limits its deformation limits the traction member 21 from continuing deformation. Specifically, for the convenience and safety of clinical operation, a wire or rope with elasticity in the axial and radial directions is provided as the traction member 21, and a limiting structure with a hole is provided on the surrounding structure 1. The traction member 21 can pass through the hole provided in the limiting structure without hindrance, and the clamping member 22 connected to the end of the traction member 21 will be limited by the limiting structure, so that the clamping member 22 can be pressed against or contacted with the limiting structure during the traction process to achieve the stagnation of the clamping member 22 at the initial position, and at the same time achieve precise control of the position and posture of the traction member 21 at the minimum stroke; the positioning structure 3 includes a positioning needle 31 and a reset member 32, the surrounding structure 1 has a positioning channel 14, part of the positioning channel 14 is passed through the inside of the execution end 12 on both sides, the positioning needle 31 is movably provided in the positioning channel 14, and the two ends of the reset member 32 are respectively connected to the positioning needle 31 and the positioning channel 14, and the positioning needle 31 always has a tendency to move to a penetration position under the drive of the reset member 32, and the positioning needle 31 contacts the execution end 12 on both sides when it moves to the penetration position. Figure 1In the figure, the two positioning needles 31 are respectively in the initial position and the penetration position. The reset member 32 is connected to the portion of the positioning channel 14 at one of the execution ends 12. When the positioning needle 31 is driven by the reset member 32 to cross the operating area 13 and extend into the portion of the positioning channel 14 at the other execution end 12, the tip of the positioning needle 31 is contained in the surrounding structure 1, thereby avoiding the risk of puncture. In addition, since the positioning needle 31 has a tendency to penetrate into the other execution end 12 under the drive of the reset member 32, when the doctor pulls the positioning needle 31 out of the execution end 12 in the opposite reset direction, he only needs to place the part of the tendon to be punctured on the path of the positioning channel 14 and release the positioning needle 31. The positioning needle 31 can then automatically puncture and locate the tendon.

[0036] A more preferred embodiment is as follows Figure 1-3 As shown, the positioning channel 14 includes a receiving section 141 and a limiting section 142. The receiving section 141 is arranged on the outer wall of one of the execution ends 12, and the limiting section 142 is arranged through the other execution end 12. The receiving section 141 and the limiting section 142 are aligned one by one; when the positioning needle 31 moves in the positioning channel 14, it is always partially sleeved on the limiting section 142; the reset member 32 is elastic and connected to the limiting section 142. In the process of the reset member 32 driving the positioning needle 31 to move to the through position, the positioning needle 31 moves along the central axis of the positioning channel 14 toward the receiving section 141. The receiving section 141 and the limiting section 142 are components of the positioning channel 14, which can limit the radial movement of the positioning needle 31. The elastic reset member 32 provides the positioning needle 31 with power to pass through the positioning channel 14. The limiting section 142 can also limit the axial movement stroke of the positioning needle 31 in the positioning channel 14, so that the positioning needle 31 will not be exposed outside the surrounding structure 1 when there is no external force interference, and at the same time has the power to pierce the tendon. The cooperation between the reset member 32 and the limiting section 142 makes the tendon puncture operation simple and convenient, and there is no risk of being stabbed.

[0037] A more preferred embodiment is as follows Figure 1-3As shown, the interior of the limiting section 142 has a contact end surface 1421 that is perpendicular to the central axis of the limiting section 142. On the side of the contact end surface 1421 facing the receiving section 141, the inner diameter of the limiting section 142 is smaller than the maximum outer diameter of the positioning needle 31. On the side of the contact end surface 1421 facing away from the receiving section 141, the inner diameter of the limiting section 142 is larger than the maximum outer diameter of the positioning needle 31. The positioning needle 31 includes a puncture tip 311. When the positioning needle 31 moves to the penetration position, the puncture tip 311 is located in the receiving section 141. The puncture tip 311 has a pointed end that does not contact the inner wall of the receiving section 141 during movement of the positioning needle 31 to prevent wear of the pointed end. The positioning needle 31 also includes an operating end 312 for easy grasping. The operating end 312 and the puncture end 311 are located on opposite sides of the puncture needle in the axial direction. The outer diameter of the operating end 312 is larger than the minimum inner diameter of the limiting section 142, while the outer diameter of the puncture end 311 is smaller than the minimum inner diameter of the limiting section 142. The operating end 312 is always outside the surrounding structure 1 when the positioning needle 31 moves, so that the doctor can control the movement of the positioning needle 31 through the operating end 312. By providing the abutting end surface 1421, the limiting section 142 is formed into a limiting countersunk hole with a stepped surface, thereby preventing the positioning needle 31 from completely penetrating the limiting section 142, thereby preventing the tip of the positioning needle 31 from being worn due to continuous contact with the inner wall of the receiving section 141.

[0038] A more preferred embodiment is as follows Figure 1-3 As shown, the outer wall of the surrounding structure 1 is provided with a limiting sheath 15, and one end of the pulling member 21 is disposed within the limiting sheath 15, allowing the pulling member 21 to partially extend out of the opening of the limiting sheath 15. When the clamping member 22 moves to the initial position, the axial length of the pulling member 21 is no greater than the axial length of the limiting sheath 15. The clamping member 22 is tightly pressed against the opening of the limiting sheath 15, and at the same time, the clamping member 22 is pulled into the limiting sheath 15, thereby providing a hard limit for the clamping member 22 moving to the initial position. When the clamping member 22 clamps the wound edge, the pulling member 21 partially disengages from the limiting sheath 15 and pulls the clamped wound edge outward to achieve the effect of exposing the wound. When the patient's arm moves, the surrounding structure 1 moves with the patient's arm, and the pulling structure 2 simultaneously connects the patient's arm and the surrounding structure 1. Therefore, the pulling and stretching effect of the pulling structure 2 on the wound edge is not affected by the movement of the patient's arm, and the relative position relationship between the pulling structure 2 and the wound is always maintained during the movement of the patient's arm. In addition, the traction member 21 is specifically an elastic rope or an elastic line.

[0039] Example 2

[0040] A tendon suturing auxiliary device, such as Figure 1-5As shown, it includes: a surrounding structure 1, which is provided with a fitting channel 11, and the patient's arm is fitted into the fitting channel 11. The surrounding structure 1 has two opposite execution ends 12, and an operation area 13 is formed between the execution ends 12. The operation area 13 exposes the wound on the patient's skin surface; a traction structure 2, which includes a traction member 21 and a clamping member 22. The two ends of the traction member 21 are respectively connected to the clamping member 22 and the surrounding structure 1. The clamping member 22 always has a tendency to move to an initial position under the drive of the traction member 21. The traction structure 2 is symmetrically distributed on the outer wall of the surrounding structure 1; a positioning structure 3, which includes a positioning pin 31 and a reset member 32. The surrounding structure 1 has a positioning channel 14. Part of the positioning channel 14 is provided inside the execution ends 12 on both sides. The positioning pin 31 is movably provided in the positioning channel 14. The two ends of the reset member 32 are respectively connected to the positioning pin 31 and the positioning channel 14. The positioning pin 31 always has a tendency to move to a penetration position under the drive of the reset member 32. When the positioning pin 31 moves to the penetration position, it contacts the execution ends 12 on both sides.

[0041] Different from the above embodiment, this embodiment provides a solution for adjusting the shape of the surrounding structure 1 to better align the operation area 13 with the wound, such as Figure 4-5 As shown, the encircling structure 1 is composed of two half-rings 4 that can be slidably coupled along the axial direction of the positioning pin 31. One half-ring 4 has an insertion end 41, and the other half-ring 4 has a slot end 42. When the insertion end 41 moves within the slot end 42, the encircling length of the encircling structure 1 and the area of ​​the operating region 13 change. The outer wall of the slot end 42 is provided with a threaded hole and a pressure screw 421 adapted to move within the threaded hole. When the pressure screw 421 rotates circumferentially, it moves deeper into or away from the insertion end 41. When the pressure screw 421 passes through the outer wall of the slot end 42 and presses against the insertion end 41, the relative movement between the insertion end 41 and the slot end 42 is locked. The patient's arm near the wrist is oval. By providing an insertion end 41 and a slot end 42 that can be slidably connected and enable the two execution ends 12 to approach or move away from each other, when the two execution ends 12 approach each other, the axial cross-section of the fitting channel 11 changes to an elliptical shape, and at the same time, the opening formed by the operating area 13 on the surrounding structure 1 is in the small arc segment of the ellipse; when the two execution ends 12 move away from each other, the axial cross-section of the fitting channel 11 also changes to an elliptical shape, and at the same time, the opening formed by the operating area 13 on the surrounding structure 1 is in the large arc segment of the ellipse; therefore, by adjusting the spacing between the two half rings 4, it can be ensured that the operating area 13 is aligned with the wound when the surrounding structure 1 surrounds the patient's wrist.

[0042] Example 3

[0043] A tendon suturing auxiliary device, such as Figure 1-9As shown, it includes: a surrounding structure 1, which is provided with a fitting channel 11, and the patient's arm is fitted into the fitting channel 11. The surrounding structure 1 has two opposite execution ends 12, and an operation area 13 is formed between the execution ends 12. The operation area 13 exposes the wound on the patient's skin surface; a traction structure 2, which includes a traction member 21 and a clamping member 22. The two ends of the traction member 21 are respectively connected to the clamping member 22 and the surrounding structure 1. The clamping member 22 always has a tendency to move to an initial position under the drive of the traction member 21. The traction structure 2 is symmetrically distributed on the outer wall of the surrounding structure 1; a positioning structure 3, which includes a positioning pin 31 and a reset member 32. The surrounding structure 1 has a positioning channel 14. Part of the positioning channel 14 is provided inside the execution ends 12 on both sides. The positioning pin 31 is movably provided in the positioning channel 14. The two ends of the reset member 32 are respectively connected to the positioning pin 31 and the positioning channel 14. The positioning pin 31 always has a tendency to move to a penetration position under the drive of the reset member 32. When the positioning pin 31 moves to the penetration position, it contacts the execution ends 12 on both sides.

[0044] Different from the above embodiment, this embodiment provides a solution for adjusting the shape of the surrounding structure 1 so that the surrounding structure 1 and the patient's arm can be fitted together, such as Figure 6-9 As shown, a connector 50 is provided between the execution end 12, and the surrounding structure 1 includes a marking portion 51 and a closing portion 52. The operation area 13 is provided on the marking portion 51. The marking portion 51 and the closing portion 52 are hinged by a latch 53. The closing portion 52 can rotate around the latch 53 and form an open loop or a closed loop with the marking portion 51 so as to be opened and fitted on the patient's arm. The latch 53 is composed of a bolt 531 and a nut 532. The connection and opening and closing operation of the closing portion 52 and the marking portion 51 are achieved by at least two latches 53. When both latches 53 are removed, the closing portion 52 can be separated from the marking portion 51, which is conducive to improving the interchangeability of the suturing auxiliary device.

[0045] A more preferred embodiment is as follows Figure 6-9 As shown, a cushioning layer 54 is provided on the inner wall of the surrounding structure 1. The cushioning layer 54 is elastic and does not obstruct the operating area 13. When the closure portion 52 and the calibration portion 51 form a closed loop, the cushioning layer 54 compresses the patient's arm and stabilizes the relative position of the fixation assist device and the patient's arm. The cushioning layer 54 is divided into two parts and is arranged on the inner walls of the calibration portion 51 and the closure portion 52. When the closure portion 52 and the calibration portion 51 are removed, the cushioning layer 54 is separated. The elastic cushioning layer 54 provides good padding when the surrounding structure 1 is fitted over the outside of the patient's arm, mitigating any changes in the relative position of the wound and the operating area 13 during the procedure.

[0046] Example 4

[0047] A tendon suturing auxiliary device, such as Figure 1-11As shown, it includes: a surrounding structure 1, which is provided with a fitting channel 11, and the patient's arm is fitted into the fitting channel 11. The surrounding structure 1 has two opposite execution ends 12, and an operation area 13 is formed between the execution ends 12. The operation area 13 exposes the wound on the patient's skin surface; a traction structure 2, which includes a traction member 21 and a clamping member 22. The two ends of the traction member 21 are respectively connected to the clamping member 22 and the surrounding structure 1. The clamping member 22 always has a tendency to move to an initial position under the drive of the traction member 21. The traction structure 2 is symmetrically distributed on the outer wall of the surrounding structure 1; a positioning structure 3, which includes a positioning pin 31 and a reset member 32. The surrounding structure 1 has a positioning channel 14. Part of the positioning channel 14 is provided inside the execution ends 12 on both sides. The positioning pin 31 is movably provided in the positioning channel 14. The two ends of the reset member 32 are respectively connected to the positioning pin 31 and the positioning channel 14. The positioning pin 31 always has a tendency to move to a penetration position under the drive of the reset member 32. When the positioning pin 31 moves to the penetration position, it contacts the execution ends 12 on both sides. The operation area 13 is used to expose the wound and the everted skin at the edge of the wound, but in actual operation, the circumference of the patients' arms is different; when the doctor opens a wound connecting the tendon sheath on the patient's body surface, the wounds of different patients are opened at different positions on the arm. Therefore, when the patient's arm is placed in the fitting channel 11, in order to ensure that the wound is just aligned with the operation area 13, the inner wall of the surrounding structure 1 should also be provided with a pushing structure to limit the arm posture. In this embodiment, the pushing structure is specifically a limiting stud 61 and a pressure plate 62.

[0048] Different from the above embodiment, this embodiment provides a solution for limiting the relative position of the patient's arm and the surrounding structure 1. This solution can adapt to patients of different body shapes and helps to quickly adjust the alignment of the wound and the operating area 13 while ensuring the patient's comfort. Figure 10-11 As shown, the outer wall of the surrounding structure 1 is penetrated by several screw holes 60. A limit stud 61 is disposed within each of the screw holes 60, and when the limit stud 61 moves axially, it enters or exits the fitting channel 11. A pressure plate 62 is connected to the end of the limit stud 61 within the fitting channel 11. Movement of the limit stud 61 drives the pressure plate 62 to adjust the position of the patient's arm relative to the surrounding structure 1. A knob 611 is provided on the side of the limit stud 61 facing away from the fitting channel 11 for user convenience. The outer diameter of the knob 611 is larger than the inner diameter of the screw hole 60.

[0049] A more preferred embodiment is as follows Figure 10-11As shown, the pressure plate 62 is rotatably connected to the limiting stud 61 around its central axis. A cushioning pad 621 is provided on the end of the pressure plate 62 facing away from the limiting stud 61. Both the pressure plate 62 and the cushioning pad 621 have an arc that is concave toward the inner wall of the surrounding structure 1. As the pressure plate 62 moves, it compresses the patient's arm from multiple directions, improving the stability of the connection between the arm and the tendon suturing assist device through multi-point fixation.

Claims

1. A tendon suturing auxiliary device, characterized in that: include, The surrounding structure is provided with a sleeve channel through which the patient's arm is sleeved. The surrounding structure has two opposite execution ends, and an operation area is formed between the execution ends. The operation area exposes the wound on the patient's skin surface. The traction structure includes a traction member and a clamping member, wherein the two ends of the traction member are respectively connected to the clamping member and the surrounding structure, and the clamping member always has a tendency to move to an initial position under the drive of the traction member. The traction structure is symmetrically distributed on the outer wall of the surrounding structure; The positioning structure includes a positioning needle and a reset member. The surrounding structure has a positioning channel. The positioning channel portion is arranged inside the execution ends on both sides. The positioning needle is movably arranged in the positioning channel. The two ends of the reset member are respectively connected to the positioning needle and the positioning channel. The positioning needle always has a tendency to move to a through position under the drive of the reset member. When the positioning needle moves to the through position, it contacts the execution ends on both sides.

2. A tendon suturing auxiliary device according to claim 1, characterized in that: The positioning channel includes a receiving section and a limiting section. The receiving section is arranged on the outer wall of one of the execution ends, and the limiting section is arranged through the other execution end, and the receiving section and the limiting section are aligned one by one; when the positioning needle moves in the positioning channel, it is always partially engaged with the limiting section; the reset member is elastic and connected to the limiting section. In the process of the reset member driving the positioning needle to move to the penetration position, the positioning needle moves along the central axis of the positioning channel toward the receiving section.

3. A tendon suturing auxiliary device according to claim 2, characterized in that: The interior of the limiting section has a tightening end face; on the side of the tightening end face facing the receiving section, the inner diameter of the limiting section is smaller than the maximum outer diameter of the positioning needle; on the side of the tightening end face facing away from the receiving section, the inner diameter of the limiting section is larger than the maximum outer diameter of the positioning needle.

4. A tendon suturing auxiliary device according to claim 1, characterized in that: A limiting sheath is provided on the outer wall of the surrounding structure, one end of the traction member is provided in the limiting sheath, and the traction member can partially extend out of the opening of the limiting sheath; when the clamping member moves to the initial position: The axial length of the pulling member is not greater than the axial length of the limiting sheath; The clamping piece is tightly pressed against the opening of the limiting sheath.

5. A tendon suturing auxiliary device according to claim 1, characterized in that: The surrounding structure is composed of two half rings that can be slidably connected along the axial direction of the positioning needle; one half ring has an insertion end, and the other half ring has a slot end. When the insertion end moves in the slot end, the surrounding length and the area of ​​the operating region of the surrounding structure change; a pressing screw is provided through the outer wall of the slot end, and the pressing screw goes deeper into or away from the insertion end when it rotates circumferentially. When the pressing screw passes through the outer wall of the slot end and presses the insertion end, the relative movement of the insertion end and the slot end is locked.

6. A tendon suturing auxiliary device according to claim 1, characterized in that: A connecting piece is provided between the execution ends, the surrounding structure includes a calibration part and a closing part, the operation area is provided in the calibration part, the calibration part and the closing part are hinged by a latch, the closing part can rotate around the latch and form an open loop or a closed loop with the calibration part.

7. A tendon suturing auxiliary device according to claim 6, characterized in that: A buffer layer is provided on the inner wall of the surrounding structure. The buffer layer is elastic and does not block the operating area. When the closing part and the calibration part form a closed loop, the buffer layer squeezes the patient's arm and stabilizes the relative position relationship between the fixation auxiliary device and the patient's arm.

8. A tendon suturing auxiliary device according to claim 1, characterized in that: The outer wall of the surrounding structure is penetrated by a plurality of screw holes, and a limiting stud is provided to move in the screw hole. When the limiting stud moves axially, it invades or disengages from the fitting channel; the end of the limiting stud in the fitting channel is connected to a pressure plate, and when the limiting stud moves, it drives the pressure plate to adjust the positional relationship between the patient's arm and the surrounding structure.

9. A tendon suturing auxiliary device according to claim 8, characterized in that: The pressing plate is rotatably connected to the limiting screw bolt around the center axis of the limiting screw bolt.

10. A tendon suturing auxiliary device according to claim 9, characterized in that: A buffer pad is provided at the end of the pressure plate away from the limiting stud, and both the pressure plate and the buffer pad have an arc that is concave toward the inner wall of the surrounding structure.

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