Medical stitching instrument
By designing the suture needle and needle plate structure of the medical suture device, automatic cross-connection of sutures is achieved, solving the problem of cumbersome suture operation in rotator cuff repair surgery and improving surgical efficiency and convenience.
Patent Information
- Application Number
- CN202410568190.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2026-02-13
AI Technical Summary
Current rotator cuff repair surgery involves cumbersome suture procedures, requiring manual threading, straightening, and knotting, which is time-consuming and makes the surgery difficult.
Design a medical suture device, including components such as suture needles, needle plates, and pressure plates. Through the design of the suture needle's thread hole and groove, combined with a limiting mechanism, it realizes automatic cross-connection and fixation of sutures, simplifying suture operation.
It reduces the difficulty of surgery, improves surgical efficiency, simplifies suture procedures, eliminates the need for threading and knotting, and enhances the convenience of surgery.
Smart Images
Figure CN121512593A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, and particularly relates to a medical suturing device. BACKGROUND
[0002] Shoulder capsule repair is often used to treat shoulder capsule tear and other diseases. In the existing shoulder capsule repair, a medical suturing needle is used to pass through the tendon with a suture, and both ends of the suture are located outside the body. After passing through the tendon with multiple sutures, the sutures are arranged in order outside the body, and the end of the suture close to the inner side of the tendon (close to the bone) is knotted (usually, the first suture and the second suture are knotted, the third suture and the fourth suture are knotted, and so on; or the first suture and the second suture are knotted, the third suture is knotted with the second suture, and so on). The end of the suture close to the outer side of the tendon is pulled, the knot of the suture outside the body is pulled back into the body and abuts against the inner side of the tendon, the end of the suture close to the inner side of the tendon is limited on the inner side of the tendon, and then the end of the suture close to the outer side of the tendon outside the body is fixed on the anchor, the anchor is fixed on the shoulder bone, the anchor is rotated to tighten the suture, and the tendon is tightly attached to the bone. The above operation needs to manually pass the suture, arrange the suture, knot the suture, and pull the suture, which is very complicated and consumes a lot of energy (especially the arrangement of the suture and the knotting of the suture), and a slight mistake will cause failure, so the operation is difficult. SUMMARY
[0003] The present application aims to provide a medical suturing device which is convenient to operate and reduces the difficulty of operation.
[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a medical suturing device, comprising: a suture needle, a threading hole penetrating the suture needle in a first direction is arranged at the lower end of the suture needle, and a groove penetrating the suture needle in a second direction is arranged above the threading hole, the lower end of the groove is gradually inclined downward from inside to outside, and the first direction and the second direction are arranged in a cross manner; a needle plate, a needle insertion hole penetrating the needle plate in an up-down direction is arranged at the front end of the needle plate, and a wire slot is arranged at the bottom of the needle plate, the wire slot transversely penetrates the needle insertion hole in the second direction, and both ends of the wire slot extend from the front end of the needle plate to the rear end of the needle plate, and a slot opening with a width smaller than the width of the slot cavity is arranged along the length direction of the wire slot; a pressing plate, the pressing plate is configured to be capable of approaching or moving away from the needle plate to drive the suture needle arranged thereon to be inserted into or moved out of the needle insertion hole, and a connecting hole penetrating the pressing plate in an up-down direction is arranged at both sides of the pressing plate; a first suture, the first suture penetrates the connecting holes at both sides of the pressing plate and the threading hole at the lower end of the suture needle, and both ends of the first suture are located above the pressing plate; and The second suture is threaded through the slot in the needle plate bottom and the recess on the needle when the needle is inserted into the needle insertion hole with the first suture and the recess is aligned with the slot, and the two ends of the second suture are located outside the end of the slot. The second suture is limited in the slot, and can be pulled out of the slot opening and can pull the first suture when the two ends are pulled downward by external force.
[0005] Further, the above-mentioned medical suture device further comprises a limiting mechanism for limiting the relative movement between the pressing plate and the needle plate when the recess is aligned with the slot.
[0006] Further, the pressing plate is configured to be able to translate up and down or deflect relative to the needle plate.
[0007] Further, the needle plate is connected with a gun barrel, the rear end of the gun barrel is connected with a gun handle, a trigger is installed on the gun handle, the pressing plate is movably connected with the gun barrel and connected with the trigger, and the trigger can drive the pressing plate to approach or move away from the needle plate to insert or remove the needle into or out of the needle insertion hole.
[0008] Further, the needle is detachably installed at the bottom of the pressing plate.
[0009] Further, the connecting hole at least partially overlaps with the needle and extends downward to form an inner recess on the side wall of the needle.
[0010] When the above-mentioned medical suture device is used, it can be first placed in the expanded state, with the pressing plate away from the needle plate, and then the first suture is threaded through the threading hole on the needle and the connecting holes on both sides of the needle, and the two ends of the first suture are located above the pressing plate, at which time the recess is clamped between the first sutures on both sides of the needle; then the pressing plate and the needle plate are used to clamp the tendon, and the pressing plate is moved close to the needle plate, so that the needle passes through the tendon and is inserted into the needle insertion hole, and when the recess is aligned with the slot, the second suture is threaded along the slot and passes through the recess, at which time the second suture is located in the recess and between the first sutures on both sides of the needle; then the pressing plate is moved away from the needle plate, so that the needle is removed from the needle insertion hole, and the two ends of the second suture can also be pulled at the same time, so that the first suture which follows the needle upward can slide out of the recess under the pulling action of the second suture and be connected with the second suture, and then the two ends of the second suture are pulled downward to make it out of the slot opening, so as to realize the cross connection of the first suture and the second suture; after the needle is completely separated from the tendon, the first suture on the needle is not pulled out, and the above-mentioned operation is repeated in sequence at multiple positions of the tendon, and then the first suture is pulled out of the connecting hole and the threading hole and the device is removed, and then the second suture close to the first suture is pulled, the end of the first suture which is originally inside the tendon is pulled out and moved to the outside of the body, and then the two ends of the first suture and the two ends of the second suture which are on the same side (the outside of the tendon) of the tendon are fixed on the anchor, and then the anchor is fixed on the bone and rotated to tighten the first suture and the second suture, so that the tendon is tightly attached to the bone.
[0011] The present application has the advantages of simple structure, convenient use, and can be used for arthroscopic (endoscopic) glenoid, tendon, rotator cuff (soft tissue) repair surgery. When used, the suture does not need to be knotted outside the body and then pulled back into the body, saving the steps of threading, knotting, pulling the line, etc., the surgical efficiency is higher, and under the cooperation of the needle, the pressing plate, the needle plate and other parts, the threading operation of the tendon and the connection operation between different sutures can be easily realized, the surgical difficulty is lower. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a front view of the medical suture device in the folded state in the embodiment; Figure 2 is a perspective view of the medical suture device in the folded state in the embodiment; Figure 3 is a front view of the medical suture device in the unfolded state in the embodiment; Figure 2 is an enlarged view of part A in the embodiment; Figure 4 is a front view of the medical suture device in the unfolded state in the embodiment; Figure 5 Figure 4 is an enlarged view of part B in the embodiment; Figure 6 is a perspective view of the medical suture device in the unfolded state in the embodiment Figure 1 ; Figure 7 is an enlarged view of part C in the embodiment; Figure 6 Figure 8 is a perspective view of the medical suture device in the unfolded state in the embodiment Figure 2 ; Figure 9 is an enlarged view of part D in the embodiment; Figure 8 Figure 10 is a structural schematic view of the medical suture device in the embodiment with the first suture loaded; Figure 11 is an enlarged view of part E in the embodiment; Figure 10 Figure 12 is a structural schematic view of the medical suture device in the embodiment with the second suture loaded; Figure 13 is an enlarged view of part F in the embodiment; Figure 12 Figure 14 is a flowchart of threading the first suture and the second suture on the tendon in the embodiment.
[0013] In the figure: 1 - suture needle 1a - threading hole 1b - groove 2 - needle plate 2a - Pin hole 2b - Wire groove 3—Pressure plate 3a—Connecting hole 4 - Gun barrel 5 - Gun handle 6 - Trigger 7 - First seam 8 – Second suture; 9 – Tendon. Detailed Implementation
[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.
[0015] Existing rotator cuff repair procedures require untangling and knotting the sutures outside the body, followed by pulling the knotted sutures back inside. This process is cumbersome, time-consuming, and labor-intensive, making the surgery quite challenging. Therefore, this embodiment provides a user-friendly suture device to improve surgical efficiency and reduce surgical difficulty.
[0016] like Figures 1-9 As shown, the medical suture device in this embodiment mainly includes components such as a needle 1, a needle plate 2, and a pressure plate 3. This medical suture device is typically used in conjunction with sutures. There are multiple sutures, some of which are used to pass through the tendon 9; this portion of the suture is usually a single, continuous suture and can be referred to as the "first suture 7". Other portions of the suture are used to pass between and cross (intersect, for example, overlap) the curved first sutures 7; this portion of the suture is usually multiple sutures and can be referred to as the "second suture 8". In this embodiment, the first suture 7 and the second suture 8 are made of the same material and have the same outer diameter.
[0017] like Figure 4 , 5 As shown in Figure 9, the needle 1 is installed below the front end of the pressure plate 3, and the needle 1 can be perpendicular to the pressure plate 3. The bottom of the needle 1 is provided with a thread hole 1a, the diameter of which is larger than the outer diameter of the first thread 7. The thread hole 1a can pass through the needle 1 in a first direction, for example, the thread hole 1a passes through the needle 1 in a horizontal front-to-back direction. The bottom of the needle 1 is also provided with a groove 1b that allows the second thread 8 to pass through and is located above the thread hole 1a. The groove 1b can pass through the needle 1 in a second direction, for example, the groove 1b passes through the needle 1 in a horizontal left-to-right direction. The first and second directions are intersecting (or at an angle), that is, the axis of the groove 1b is at an angle to the axis of the thread hole 1a (for example, the axis of the groove 1b is perpendicular to the axis of the thread hole 1a), so that the second thread 8 passing through the groove 1b can cross and connect with the first thread 7 passing through the thread hole 1a. The lower end of the groove 1b can be gradually inclined downward from the inside out, so that the second suture 8 located therein can slide out more easily when the needle 1 moves upward.
[0018] As shown in Figures 6-7 the front end of the needle plate 2 is provided with an upper and lower through needle hole 2a and a wire slot 2b located at the bottom of the needle plate 2, the needle hole 2a can be a strip hole or a strip slot, and the width is greater than the outer diameter of the needle 1. The wire slot 2b crosses the needle hole 2a along the second direction (for example, along the horizontal left and right direction), the two ends of the wire slot 2b are bent backward and extend backward to the rear end of the needle plate 2, the wire slot 2b penetrates the surface of the needle plate 2, and the wire slot 2b is mainly used for the second suture 8. The wire slot 2b is provided with a slot along the length direction (extension direction), and the width of the slot is less than the width of the slot inner cavity, and the outer diameter of the second suture 8 is less than the width of the slot inner cavity and slightly greater than the width of the slot, so that the second suture 8 can be inserted into the inner cavity of the wire slot 2b, and it cannot be pulled out by itself under the limitation of the slot, and when a certain pulling force is applied to the second suture 8, it can be pulled out from the slot, of course, the pulling force should form a component force perpendicular to the wire slot 2b and directed away from the wire slot 2b. Wherein, the slot of the wire slot 2b can also be provided with soft glue, and the second suture 8 pulled out by extruding the soft glue to deform, so as to expand the slot, so as to easily pull out from the slot. When the needle 1 is inserted into the needle hole 2a, the groove 1b can be aligned with the wire slot 2b crossing the needle hole 2a, and the second suture 8 inserted into the wire slot 2b can pass through the groove 1b along the wire slot 2b and pass out from the other end of the wire slot 2b. In addition, the wire slot 2b provided on the needle plate 2 is in the shape of U as a whole, and the slot of the wire slot 2b can be arranged at an angle (for example, at a right angle, the slot is perpendicular to the horizontal plane) between the horizontal plane (for example, at a right angle, the slot is perpendicular to the horizontal plane, when the wire slot 2b is arranged at the bottom of the needle plate 2, the slot is downward), and in order to make the second suture 8 more easily pulled out from the wire slot 2b, the angle between the slot of the wire slot 2b and the horizontal plane can be less than 90 degrees, for example, 30 degrees, 45 degrees, 60 degrees, etc.
[0019] As shown in Figures 8-9 the pressing plate 3 is provided with a connecting hole 3a capable of allowing the first suture 7 to pass through on both sides of the needle 1 (for example, the front and rear sides of the needle 1). Wherein, the connecting hole 3a can partially overlap the needle 1 and extend downward, so as to form a concave part on the side wall of the needle 1, and the concave part can play a certain guiding and limiting role for the first suture 7. When the first suture 7 passes through the wire hole 1a and the connecting hole 3a, the groove 1b can be located between the first suture 7 and the side wall of the needle 1 (it can also be understood that it is located between the first suture 7 on both sides of the needle 1), and then when the second suture 8 passes through the groove 1b, the two sutures can be cross connected (overlap each other). Wherein, the pressing plate 3 can be movably connected with the needle plate 2 and can move close to or away from each other, so as to drive the needle 1 to be inserted into or moved out of the needle hole 2a.
[0020] When the pressing plate 3 is away from the needle plate 2 (unfolded state), the needle 1 is not inserted into (away from) the needle insertion hole 2a, the first suture 7 can be passed through the threading hole 1a and the connecting hole 3a, so that the groove 1b on the needle 1 is between the first sutures 7 on both sides of the needle 1, see Figures 10-11 When the pressing plate 3 is close to the needle plate 2 (folded state), the needle 1 is inserted into the needle insertion hole 2a, and the groove 1b is aligned with the wire slot 2b, the second suture 8 can be passed into the wire slot 2b and passed through the groove 1b, so that the second suture 8 is cross-connected with the first suture 7, and both ends of the second suture 8 are located outside the end of the wire slot 2b, see Figures 12-13 When the needle 1 is moved out of the needle insertion hole 2a by following the pressing plate 3 to be lifted up, the second suture 8 can slide out of the groove 1b on the needle 1 and be placed on the first suture 7, and then a pulling force is applied to the second suture 8 to make it out of the notch of the wire slot 2b. Of course, the second suture 8 can be first pulled out of the wire slot 2b, and then the needle 1 is lifted up to make the second suture 8 slide out of the groove 1b and be placed on the first suture 7. Alternatively, the operations of moving the needle 1 upward and pulling the second suture 8 can be performed synchronously.
[0021] For the groove 1b, it can be arranged on the front side of the needle 1 or the rear side of the needle 1, and correspondingly, the wire slot 2b can cross the front side or the rear side of the needle insertion hole 2a. In the embodiment, the groove 1b is arranged on the rear side of the needle 1, and the wire slot 2b crosses the rear side of the needle insertion hole 2a.
[0022] In the embodiment, the pressing plate 3 is configured to be able to translate upward and downward or deflect upward and downward relative to the needle plate 2, so as to make the needle 1 inserted into or moved out of the needle insertion hole 2a. When the pressing plate 3 is away from the needle plate 2, a spacing space can be formed between the pressing plate 3 and the needle plate 2, which can be moved into the tendon 9.
[0023] In addition, the medical suture device of the embodiment can further include a limiting mechanism for limiting the relative movement between the pressing plate 3 and the needle plate 4 when the groove 1b is aligned with the wire slot 2b. Under the action of the limiting mechanism, the alignment operation of the groove 1b and the wire slot 2b will become more easy and simple.
[0024] The above medical suture device can be applied to the existing medical suture gun, and can also be used to modify the existing medical suture gun. Specifically, as follows: Figure 1 4 As shown, the needle plate 2 is connected with the gun barrel 4, the rear end of the gun barrel 4 is connected with the gun handle 5, the trigger 6 is installed on the gun handle 5, the pressing plate 3 is movably connected with the gun barrel 4 and connected with the trigger 6, the trigger 6 can drive the pressing plate 3 to move close to or away from the needle plate 2 (for example, when the trigger 6 is pulled, the pressing plate 3 is driven to move close to the needle plate 2, and when the trigger 6 is reset, the pressing plate 3 is driven to move away from the needle plate 2), so that the sewing needle 1 is inserted into or moved out of the needle insertion hole 2a. The trigger 6 and the gun handle 5 can be provided with an elastic component, such as a reset spring, for facilitating the reset of the trigger 6 after being loosened. The trigger 6 and the pressing plate 3 can be connected through a connecting mechanism, such as a connecting rod mechanism, a gear mechanism, a pull wire mechanism, etc. The embodiment does not limit it, and the improvement of the embodiment is not in this regard, so the connecting mechanism only needs to be able to drive the pressing plate 3 to move close to or away from the needle plate 2 through the trigger 6. Among them, the sewing needle 1 can be fixedly connected at the bottom of the pressing plate 3, and the needle plate 2 can be integrated with the gun barrel 4, or the sewing needle 1 can be detachably installed (for example, threaded) at the bottom of the pressing plate 3, and the needle plate 2 is installed (for example, detachably installed) at the bottom of the gun barrel 4, so that the existing medical stitching gun can be easily modified by replacing the sewing needle 1 and fixing the needle plate 2 at the bottom of the gun barrel 4. In addition, the trigger 6 can drive the pressing plate 3 to move up and down relative to the needle plate 2 or to deflect up and down. In addition, the limiting mechanism can be a limiting part provided between the trigger 6 and the gun handle 5, which can abut against the trigger 6 when the trigger 6 is pulled and deflected backward, so that the sewing needle 1 stops at the position where the groove 1b aligns with the line groove 2b when it is inserted into the needle insertion hole 2a, so that the user only needs to pull the trigger 6 to the bottom, and the groove 1b aligns with the line groove 2b, which is more simple and convenient to operate. It should be noted that the internal structure of the above medical stitching gun is prior art, and those skilled in the art can easily understand its internal structure, and the embodiment does not improve the internal structure, so it will not be described again.
[0025] The medical stitching device is used, the gun handle 5 is held, the trigger 6 is not pulled first, the pressing plate 3 is away from the needle plate 2, the first suture 7 is passed through the threading hole 1a on the needle 1 and the connecting hole 3a on both sides of the needle 1, and the two ends of the first suture 7 are located above the pressing plate 3, at this time, the groove 1b is clamped between the first suture 7 on both sides of the needle 1; then the muscle tendon 9 is clamped by the pressing plate 3 and the needle plate 2, and the trigger 6 is pulled to make the pressing plate 3 close to the needle plate 2, so that the needle 1 passes through the muscle tendon 9 and is inserted into the needle insertion hole 2a, and when the groove 1b is aligned with the wire groove 2b, the second suture 8 is passed into the second suture 8 along the wire groove 2b and passes through the groove 1b, at this time, the second suture 8 is located in the groove 1b and between the first suture 7 on both sides of the needle 1; then the trigger 6 is released and reset, the pressing plate 3 is away from the needle plate 2, the needle 1 is moved out of the needle insertion hole 2a, and the two ends of the second suture 8 can also be pulled, so that the first suture 7 following the needle 1 can slide out of the groove 1b under the pulling action of the second suture 8 and be overlapped with the second suture 8, then the two ends of the second suture 8 are pulled downward to make the two ends of the second suture 8 out of the notch of the wire groove 2b, that is, the first suture 7 and the second suture 8 are crossed and connected; after the needle 1 is completely separated from the muscle tendon 9, the first suture 7 on the needle 1 is not extracted, and the above operation is repeated in the plurality of positions of the muscle tendon 9 in turn, after the operation is completed, the first suture 7 is extracted from the connecting hole 3a and the threading hole 1a and the device is removed, then the second suture 8 close to the first suture 7 is pulled, the end of the first suture 7 originally inside the muscle tendon 9 is pulled out and moved to the outside of the body, then the two ends of the first suture 7 and the two ends of the second suture 8 on the same side (the outside of the muscle tendon 9) of the muscle tendon 9 are fixed on the anchor, then the anchor is fixed on the bone and rotated to tighten the first suture 7 and the second suture 8, so that the muscle tendon 9 is tightly attached to the bone. In addition, the process and effect of the first suture 7 and the second suture 8 passing through the muscle tendon 9 by using the medical stitching device can be seen from Figure 14 .
[0026] In general, the medical stitching device has simple structure, convenient to use, can be used for arthroscopic (endoscopic) glenoid, tendon, rotator cuff (soft tissue) repair surgery, does not need to knot the suture in the body and pull it back into the body, saves the steps of rolling, knotting and pulling the suture, has higher surgical efficiency, and can easily realize the threading operation of the muscle tendon 9 and the connection operation between the first suture 7 and the second suture 8 under the cooperation of the needle 1, the pressing plate 3, the needle plate 2 and other components, and has lower surgical difficulty.
[0027] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as the preferred embodiments, it is not intended to limit the present application in form and style. Any person skilled in the art can make some changes or modifications to the above disclosed technical contents without departing from the technical solution of the present application, and the equivalent embodiments with equivalent changes are also included. Any content not departing from the technical solution of the present application is within the patent scope of the present application.
Claims
1. A medical suture device, characterized in that, include: The lower end of the sewing needle (1) is provided with a thread hole (1a) that passes through the sewing needle (1) in a first direction and a groove (1b) located above the thread hole (1a) and passing through the sewing needle (1) in a second direction. The lower end of the groove (1b) gradually slopes downward from the inside to the outside, and the first direction and the second direction are intersected. The needle plate (2) has a needle insertion hole (2a) that runs vertically through the front end and a wire groove (2b) located at the bottom of the needle plate (2). The wire groove (2b) runs horizontally through the needle insertion hole (2a) in a second direction and its two ends extend from the front end of the needle plate (2) to the rear end of the needle plate (2). The wire groove (2b) has a slot with a width smaller than the width of the inner cavity along its length direction. The pressure plate (3) is configured to be able to approach or move away from the needle plate (2) to drive the sewing needle (1) provided thereon to insert or move out of the needle insertion hole (2a). The pressure plate (3) is provided with connecting holes (3a) that pass through the needle (1) on both sides. The first suture (7) passes through the connecting holes (3a) on both sides of the suture needle (1) and the thread hole (1a) at the lower end of the suture needle (1), with both ends located above the pressure plate (3); The second suture (8) passes through the groove (1b) on the bottom of the needle plate (2) and the groove (1b) on the needle (1) when the needle (1) inserts the first suture (7) into the needle hole (2a) and the groove (1b) is aligned with the suture groove (2b). Its two ends are located outside the end of the suture groove (2b). The second suture (8) is confined in the suture groove (2b) and can be pulled out from the groove opening of the suture groove (2b) when its two ends are pulled downward by external force, and can pull the first suture (7) when the needle (1) moves out of the needle hole (2a).
2. The medical suture device according to claim 1, characterized in that: It also includes a limiting mechanism for restricting the relative movement between the pressure plate (3) and the needle plate (2) when the groove (1b) is aligned with the line groove (2b).
3. The medical suture device according to claim 1, characterized in that: The pressure plate (3) is configured to be able to translate or deflect relative to the needle plate (2).
4. The medical suture device according to claim 1, characterized in that: The needle plate (2) is connected to the gun barrel (4), and the rear end of the gun barrel (4) is connected to the gun handle (5). A trigger (6) is installed on the gun handle (5). The pressure plate (3) is movably connected to the gun barrel (4) and connected to the trigger (6). The trigger (6) can drive the pressure plate (3) to move closer to or away from the needle plate (2) so that the sewing needle (1) can be inserted into or removed from the needle insertion hole (2a).
5. The medical suture device according to any one of claims 1-4, characterized in that: The suture needle (1) is detachably mounted on the bottom of the pressure plate (3).
6. The medical suture device according to any one of claims 1-4, characterized in that: The connecting hole (3a) at least partially overlaps with the needle (1) and extends downward to form a recess on the side wall of the needle (1).