A suture device

Abstract

This invention relates to a suturing device, belonging to the field of medical device technology, and solves the problem that existing technologies require separate devices for suturing and knotting, resulting in complex structures and large space requirements. The suturing device includes a clamping unit, a handheld handle unit, a pushing handle, and a puncture needle unit. The pushing handle includes a straight section, a handheld section, and a rotating section. The rotating section is hinged to the hinged end of the handheld handle unit. One end of the straight section has a long tube and the clamping unit. The puncture needle unit is slidably disposed within the straight section. One end of the puncture needle unit is fixedly connected to the pushing end of the handheld handle unit, and the other end can pass through the clamping unit for suturing. A rebound spring is provided between the handheld handle unit and the pushing handle for the puncture needle unit to rebound and reset for knotting. This invention uses the pressing and rebound between the pushing handle and the handheld handle unit to allow the puncture needle unit to pass through and retract, successively completing suturing and knotting. It has a simple structure, is easy to operate, and occupies little space.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a suturing device. Background Technology

[0002] As living standards improve, people's demands for medical care also increase. Due to the large trauma, slow healing, and high risk of infection associated with traditional surgery, arthroscopic surgery is becoming increasingly popular. Arthroscopic surgery is a minimally invasive procedure widely used to treat diseases of the musculoskeletal system.

[0003] Because the foot and ankle bear the weight of the entire body during movement and serve as a support and force-generating area in various sports, tendon or ligament injuries in this area are among the most common sports-related injuries. Currently, the main treatment for fresh tendon or ligament injuries is still conventional open surgery with direct suturing. However, due to factors such as relatively poor local blood supply to the tendons or ligaments in the foot and ankle, thin skin tissue, long incisions in traditional surgery, and prolonged plaster cast immobilization, postoperative complications may occur, including pain in the affected area, impaired skin extensibility due to connective tissue, skin infection, necrosis, plantar flexion weakness, or even re-tears, leading to unsatisfactory treatment outcomes. Furthermore, the limited space under endoscopic manipulation makes it very difficult to reposition and suture the tendons or ligaments in the foot and ankle within a confined space.

[0004] Existing endoscopic staplers are mainly abdominal intestinal anastomosers and staplers for large joints such as the shoulder and knee. The ligaments and tendons of the foot and ankle joints are relatively delicate compared to the above-mentioned areas, and the operating space is small. In the current technology, the suturing and knotting of joint ligaments are performed separately using different devices, which requires a large operating space, and the device structure is complex, time-consuming and labor-intensive. Summary of the Invention

[0005] In view of the above analysis, the present invention aims to provide a sewing device to solve the problem that the prior art requires different devices to operate for sewing and knotting, resulting in a complex device structure and space occupation.

[0006] The objective of this invention is mainly achieved through the following technical solutions:

[0007] A suturing device includes a handle unit, a main body unit, a clamping and locking unit, and a puncture needle unit. The handle unit and the main body unit are rotatably connected. One end of the puncture needle unit is connected to the main body unit, and the puncture needle unit is slidably disposed within the handle unit. When the main body unit rotates relative to the handle unit, the puncture needle unit can pass through and retract relative to the handle unit to realize suturing and knotting operations.

[0008] Furthermore, it also includes a trigger unit for adjusting the opening and closing of the clamping unit, and a locking unit for locking the trigger unit.

[0009] Furthermore, it also includes a clamping unit disposed on the main body unit.

[0010] Furthermore, the clamping unit includes a push rod assembly, a fixed clamp assembly, and a rotating clamp assembly.

[0011] Furthermore, one end of the push rod assembly is connected to the trigger unit, and the other end is rotatably connected to the rotary clamp assembly, with the end of the rotary clamp assembly hinged to the fixed clamp assembly.

[0012] Furthermore, the trigger unit includes a trigger body and a locking ratchet.

[0013] Furthermore, the upper end of the trigger body is fixedly connected to the push rod assembly, and the locking ratchet is disposed on the rear side of the trigger body with the ratchet surface facing upward.

[0014] Furthermore, the clamping and locking unit includes a locking hook, an elastic sheet, and a fixing pin.

[0015] Furthermore, the middle part of the locking hook is connected to the main body unit through a pivot, and the first end of the locking hook is provided with a locking hook facing downwards. The locking hook can engage with the locking ratchet to lock.

[0016] Furthermore, the second end of the locking hook is fixedly connected to one end of the elastic sheet, and the other end of the elastic sheet is fixed to the main body unit by the fixing pin.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The main unit of the suture device of the present invention includes a straight section, a hand-held section, and a rotating section as its push handle. The rotating section of the push handle of the main unit is hinged to the hinge end of the hand-held handle unit. The puncture needle unit is slidably disposed within the straight section of the push handle and the long tube. The first end of the puncture needle unit is fixedly connected to the hand-held handle unit, and the second end can pass through the clamping unit for suturing operations. A spring is provided between the hand-held handle unit and the push handle for the springback reset of the second end of the puncture needle unit to perform knotting operations. This invention, through the pressing and springback between the push handle and the hand-held handle unit, allows the puncture needle unit to pass through and retract in the clamping unit, thereby completing the suturing and knotting operations. The structure is simple and the operation is convenient. Suturing and knotting can be completed sequentially. The structure is simple, the operation is convenient, and the device does not occupy space.

[0019] (2) In order to achieve relative fixation of the fixed clamping assembly and the rotating clamping assembly of the clamping unit when clamping the fascia, the suture also includes a clamping locking unit. The clamping locking unit is disposed on the hand hand section of the push handle. The locking ratchet of the trigger unit and the locking hook of the clamping locking unit cooperate to achieve clamping and fixing of the clamping unit.

[0020] (3) The locking ratchet of the present invention is a multi-stage locking ratchet. The ratchet density gradually increases from one end away from the clamping unit to the other end, so that the locking distance between the locking ratchet and the locking hook gradually decreases during the locking process, making the early locking faster and the later locking more accurate.

[0021] (4) In order to limit the rotation angle between the push handle and the hand handle unit, the present invention provides a limiting hole in the rotating section of the push handle and a limiting post in the hinge end of the hand handle body. The limiting post can slide back and forth within the limitation of the limiting hole, thereby fixing the advance distance of the puncture needle unit, so as to ensure that the advance distance of the puncture needle unit is the same each time.

[0022] (5) The clamp assembly of the present invention includes a clearance portion for avoiding the passage of sutures and puncture needle units, so as to avoid the needle jamming due to insufficient space in the passage portion, which is equivalent to greatly increasing the operating space of puncture needle units and sutures, making it more convenient for operators to operate.

[0023] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or may be learned by practicing the invention. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0025] Figure 1 This is a schematic diagram of the structure of the suture device of the present invention;

[0026] Figure 2 This is a front view of the suture device of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal partial structure of the suture device of the present invention;

[0028] Figure 4 This is a front view of the suture end of a first embodiment of the suture device of the present invention;

[0029] Figure 5 This is a schematic diagram of the suture end of the first embodiment of the suture device of the present invention;

[0030] Figure 6 This is a schematic diagram of the suture end structure of the second embodiment of the suture device of the present invention. Figure 1 ;

[0031] Figure 7 This is a schematic diagram of the suture end structure of the second embodiment of the suture device of the present invention. Figure 2 .

[0032] Figure label:

[0033] 1-Clamping unit; 11-Push rod assembly; 111-Linear push rod; 112-Connecting rod; 12-Fixed clamp assembly; 121-Fixed clamp body; 122-Suture placement groove; 123-First anti-slip surface; 124-First through part; 125-First clearance part; 13-Rotating clamp assembly; 131-Rotating clamp body; 132-Clamp rotation shaft; 133-Second anti-slip surface; 134-Second through part; 135-Second clearance part;

[0034] 2-Handheld handle unit; 21-Handheld handle body; 22-Handheld through hole; 23-Push handle through hole; 24-Punch needle fixing component; 25-Fixing screw; 26-Limiting post;

[0035] 3-Main body unit; 31-Push handle; 32-Long tube; 33-Sight scope; 34-Piercing needle locking component; 35-Rebound spring; 36-Limiting hole;

[0036] 4-Trigger unit; 41-Trigger body; 42-Locking ratchet;

[0037] 5-Clamping and locking unit; 51-Locking hook; 52-Elastic sheet; 53-Fixing pin;

[0038] 6-Puncture needle unit; 61-Puncture handle; 62-Puncture part; 63-Hook part. Detailed Implementation

[0039] The following detailed description of a suturing device is provided in conjunction with specific embodiments. These embodiments are for comparative and illustrative purposes only, and the present invention is not limited to these embodiments.

[0040] Example 1

[0041] A specific embodiment of the present invention, such as Figure 1As shown, a endoscopic suture device suitable for joints is disclosed, including a clamping unit 1, a hand handle unit 2, a main body unit 3, a trigger unit 4, and a puncture needle unit 6. The push handle 31 of the main body unit 3 includes a straight section, a hand-held section, and a rotating section, which are sequentially connected and integrally formed. The rotating section of the push handle 31 is hinged to the hinge end of the hand handle unit 2. The straight section of the push handle 31 and the push end of the hand handle unit 2 are arranged on the same horizontal line. A long tube is sequentially provided at the end of the straight section of the push handle 31 away from the hand handle unit 2. 32 and clamping unit 1; puncture needle unit 6 is slidably disposed in the straight section of push handle 31 and long tube 32, the first end of puncture needle unit 6 is fixedly connected to the push end of hand handle unit 2, and the second end of puncture needle unit 6 can pass through clamping unit 1 for suturing operation; a rebound spring 35 is provided between hand handle unit 2 and push handle 31 for the rebound reset of the second end of puncture needle unit 6 for knotting operation; trigger unit 4 is disposed on the lower side of the straight section of main body unit 3 for controlling the opening and closing of clamping unit 1.

[0042] In practice, the fascia to be sutured is placed in the clamping unit 1. By pressing the trigger unit 4, the clamping unit 1 clamps the fascia. The push handle 31 and the hand handle unit 2 are pressed relative to each other, causing the puncture needle unit 6 to pass through the fascia in the clamping unit 1 and hook the suture for suturing. The push handle 31 and the hand handle unit 2 are slowly released, and they spring back away via the return spring 35, allowing the puncture needle unit 6 to return to its original position along with the suture for knotting. This design, through the pressing and springback between the push handle 31 and the hand handle unit 2, allows the puncture needle unit 6 to pass through and retract from the clamping unit 1, thus completing the suturing and knotting operations. The structure is simple and convenient to operate; suturing and knotting can be completed sequentially, and it does not occupy much space.

[0043] Furthermore, the hand handle unit 2 includes a hand handle body 21, a hand handle through hole 22, and a push handle through hole 23; the hand handle through hole 22 is disposed through the hinge end of the hand handle body 21, allowing the operator's hand to pass through the hand handle through hole 22 to hold the hand handle unit 2; the push handle through hole 23 is disposed vertically through the side wall of the hand handle through hole 22 facing the main body unit, for the passage of the rotating section of the push handle 31.

[0044] Furthermore, such as Figure 2As shown, the handheld handle unit 2 also includes a puncture needle fixing member 24 and a fixing screw 25, both disposed at the pushing end of the handheld handle unit 2, for fixing the first end of the puncture needle unit 6 to the handheld handle unit 2. A puncture needle fixing member placement groove is provided on the upper side of the pushing end of the handheld handle unit 2 in the length direction, and a screw limiting hole is provided in the width direction, for limiting the fixing screw 25 on the puncture needle fixing member 24; the first end of the puncture needle unit 6 and the fixing member 24 can be placed in the puncture needle fixing member placement groove, and the first end of the puncture needle unit 6 is fixed to the fixing member 24 by the fixing screw 25, and the fixing screw 25 is limited by the screw limiting hole, thereby ensuring that the first end of the puncture needle unit 6 remains stationary relative to the pushing end of the handheld handle unit 2.

[0045] Furthermore, the main body unit 3 also includes a sight 33 for aiming at the puncture position of the puncture needle unit 6. The sight 33 is located at one end of the straight section of the push handle 31 near the hand handle unit 2, and the sight 33 is coaxially arranged with the long tube 32.

[0046] Furthermore, the main body unit 3 also includes a puncture needle locking member 34, which is detachably disposed on the straight section of the push handle 31 and is used to fix the puncture needle unit 6 on the push handle 31 when the suture is not in use, so as to prevent the puncture needle unit 6 from sliding.

[0047] like Figure 3 As shown, in order to ensure that the advancement distance of the puncture needle unit 6 is the same each time, the relative rotational displacement between the push handle 31 and the hand handle unit 2 needs to be fixed. Therefore, the main body unit 3 also includes a limiting hole 36, which is disposed in the rotating section of the push handle 31; the hand handle unit 2 also includes a limiting post 26, which is disposed in the hinge end of the hand handle body 21. The limiting post 26 can slide back and forth within the limitation of the limiting hole 36, thereby limiting the rotational angle between the push handle 31 and the hand handle unit 2, and thus fixing the advancement distance of the puncture needle unit 6.

[0048] Furthermore, such as Figure 4 As shown, the puncture needle unit 6 includes a puncture handle 61, a puncture part 62, and a hook part 63. The puncture handle 61 extends from the hand handle unit 2 through the straight section of the push handle 31 and the long tube 32; the hook part 63 and the puncture part 62 are respectively located at the end away from the hand handle unit 2, and are used to hook the suture and to puncture the ligament, respectively.

[0049] Specifically, the hook part 63 includes a hook head and a hook notch. The hook head is positioned such that a hook notch is formed between the hook head and the puncture handle 61 for hooking the suture thread. The hook part 63 is positioned entirely on the upper side of the puncture handle 61, with both the hook head and the hook notch facing away from the clamping unit 1.

[0050] Furthermore, such as Figures 4-5 As shown, the clamping unit 1 includes a push rod assembly 11, a fixed clamp assembly 12, and a rotating clamp assembly 13. One end of the push rod assembly 11 is fixedly connected to the trigger unit 4, and the other end is rotatably connected to the middle section of the rotating clamp assembly 13. The rotating clamp assembly 13 is rotatably connected to the fixed clamp assembly 12. When the trigger unit 4 is pushed, the push rod assembly 11 pushes the rotating clamp assembly 13, causing the rotating clamp assembly 13 to move closer to the fixed clamp assembly 12, thereby achieving clamping of the fascia by the clamping unit 14.

[0051] Specifically, the push rod assembly 11 includes a linear push rod 111 and a connecting rod 112. One end of the linear push rod 111 is fixedly connected to the push trigger unit 4, and the other end is fixedly connected to one end of the connecting rod 112. The other end of the connecting rod 112 is hinged to the middle section of the rotary clamp assembly 13.

[0052] Furthermore, the fixing clamp assembly 12 includes a fixing clamp body 121, a suture placement groove 122, and a first through-hole 124. The fixing clamp body 121 sequentially includes a clamping part, a hinge part, and a connecting part. The clamping part and the hinge part are vertically arranged, and the connecting part is used for fixing to the long tube 32. The suture placement groove 122 is laterally arranged on the outer wall of the clamping section for placing the suture, and the first through-hole 124 is through-located on the clamping section for the passage of the suture and the puncture needle unit 6.

[0053] Furthermore, the clamping assembly 12 also includes a first anti-slip surface 123, which is disposed on the inner wall of the clamping part to increase friction.

[0054] Furthermore, the fixing clamp assembly 12 also includes a first clearance part 125, which is vertically disposed above the first through part 124 to allow the suture and puncture needle unit 6 to pass through, thereby avoiding the needle jamming caused by insufficient space in the first through part 124. This is equivalent to greatly increasing the operating space of the puncture needle unit 6 and the suture, making it more convenient for operators to operate.

[0055] Furthermore, the rotating clamp assembly 13 includes a rotating clamp body 131, a clamp rotation shaft 132, and a second through portion 134. The rotating clamp body 131 is rotatably connected to the hinge portion of the fixed clamp body 121 via the clamp rotation shaft 132, and the second through portion 134 is disposed through the rotating clamp body 131 for the passage of the suture and the puncture needle unit 6.

[0056] Furthermore, the rotary clamp assembly 13 also includes a second anti-slip surface 133 and a second clearance portion 135. The second anti-slip surface 133 is disposed on the side of the rotary clamp body 131 facing the clamping part to increase friction. The second clearance portion 135 is vertically disposed above the second through portion 134 to allow passage of the suture and puncture needle unit 6, preventing needle jamming due to insufficient space in the second through portion 134. This significantly increases the operating space for the puncture needle unit 6 and the suture, making operation more convenient for the operator.

[0057] It is worth noting that in this embodiment, in the horizontal direction, the suture placement groove 122 and the middle part of the inclined surface of the puncture part 62 of the puncture needle unit 6 are on the same horizontal line, so that the tip of the puncture part 62 can be below the suture placement groove 122. In this way, when the puncture needle unit 6 is pushed out, the inclined surface of the puncture part 62 passes through the suture in the suture placement groove 122, then passes through the hook head of the hook part 63 and gets stuck in the hook notch.

[0058] In order to achieve relative fixation of the fixed clamp assembly 12 and the rotating clamp assembly 13 of the clamping unit 1 when clamping the fascia, the suture device also includes a clamping locking unit 5, which is disposed on the hand grip section of the push handle 31 and achieves clamping and fixing of the clamping unit 1 through cooperation with the trigger unit 4.

[0059] Among them, such as Figure 2 As shown, the trigger unit 4 includes a trigger body 41 and a locking ratchet 42. The upper end of the trigger body 41 is connected to the linear push rod 111 of the push rod assembly 11. The locking ratchet 42 is located on the rear side of the trigger body 41 with the ratchet surface facing upward.

[0060] Specifically, such as Figure 3 As shown, the clamping and locking unit 5 includes a locking hook 51, an elastic piece 52, and a fixing pin 53. The middle part of the locking hook 51 is connected to the hand-held section of the push handle 31 through a pivot. The first end of the locking hook 51 is provided with a locking hook that can be engaged with the ratchet. The second end of the locking hook 51 is fixedly connected to one end of the elastic piece 52. The other end of the elastic piece 52 is fixed to the rear side wall of the hand-held section of the push handle 31 by the fixing pin 53.

[0061] Among them, the locking ratchet 42 is a multi-stage locking ratchet. The ratchet density of the locking ratchet 42 gradually increases from one end away from the clamping unit 1 to the other end, so that the locking distance between the locking ratchet 42 and the locking hook 51 gradually decreases during the locking process, making the initial locking faster and the later locking more accurate.

[0062] When clamping unit 1 needs to clamp the fascia, the distance between the fixed clamp assembly 12 and the rotating clamp assembly 13 is fixed by locking the locking ratchet 42 and the locking hook 51; when clamping unit 1 needs to release the fascia, the second end of the locking hook 51 is pressed down, and the locking hook 51 is disengaged from the locking ratchet 42 by the elastic force of the elastic sheet 52.

[0063] Example 2

[0064] Another embodiment of the present invention, such as Figures 6-7 As shown, a suturing device is disclosed, in which the clamping unit 1 and the puncture needle unit 6 in Embodiment 1 are replaced with the following structure.

[0065] The difference between the puncture needle unit 6 and the embodiment 1 is that the hook part 63 is set on the side of the puncture handle 61 (either side), and the hook head and the hook notch are oriented from the side toward the end away from the clamping unit 1.

[0066] The suture placement groove 122 of the clamping unit 1 fixing clamp assembly 12 is vertically disposed in the middle of the outer wall of the clamping section and is used to place the suture.

[0067] Since the suture placement groove 122 in this embodiment is vertically arranged in the middle of the outer wall of the clamping section, the length of the suture in the suture placement groove 122 in this embodiment 2 is longer than the horizontal placement length in embodiment 1, the stability of the suture is good, and the suturing operation is convenient.

[0068] Furthermore, the fixed clamp assembly 12 and the rotating clamp assembly 13 of this embodiment may not include the first clearance portion 125 and the second clearance portion 135, so that the fixed clamp assembly 12 and the rotating clamp assembly 13 can be more stable when clamping the part to be sewn.

[0069] It is worth noting that in this embodiment, the suture placement groove 122 and the middle part of the inclined surface of the puncture part 62 of the puncture needle unit 6 are on the same vertical line, so that the tip of the puncture part 62 can be on one side of the suture placement groove 122. In this way, when the puncture needle unit 6 is pushed out, the inclined surface of the puncture part 62 passes through the suture in the suture placement groove 122, then passes through the hook head of the hook part 63 and gets stuck in the hook notch.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A suturing device, characterized by, It comprises a hand handle unit (2), a main body unit (3), a clamping locking unit (5) and a puncture needle unit (6). The hand handle unit (2) and the main body unit (3) are rotationally connected, one end of the puncture needle unit (6) is connected with the main body unit (3), and the puncture needle unit (6) is slidingly arranged in the hand handle unit (2), when the main body unit (3) rotates relative to the hand handle unit (2), the puncture needle unit (6) can be extended and retracted relative to the hand handle unit (2), realizing the operation of suturing and knotting. It also comprises a clamping unit (1), the clamping unit (1) comprises a fixed clamp assembly (12), the fixed clamp assembly (12) comprises a fixed clamp body (121), a suture placement groove (122) and a first passing part (124), the fixed clamp body (121) comprises a clamping part, and the first passing part (124) is vertically arranged on the clamping part and used for passing the suture and the puncture needle unit (6). The suture placement groove (122) is transversely arranged on the outer wall of the clamping part and used for placing the suture, and the suture placement groove (122) is on the same horizontal line with the middle part of the inclined surface of the puncture part (62) of the puncture needle unit (6), so that the tip of the puncture part (62) can be below the suture placement groove (122). Or the suture placement groove (122) is vertically arranged on the middle part of the outer wall of the clamping part, and the suture placement groove (122) is on the same vertical line with the middle part of the inclined surface of the puncture part (62) of the puncture needle unit (6), so that the tip of the puncture part (62) can be on one side of the suture placement groove (122). The fixed clamp assembly (12) further comprises a first avoiding part (125) vertically arranged above the first passing part (124) and used for avoiding the passing of the suture and the puncture needle unit (6). It also comprises a trigger unit (4), the trigger unit (4) comprises a locking ratchet (42), the locking ratchet (42) is a multi-stage locking ratchet, and the locking ratchet (42) gradually increases in ratchet density from one end away from the clamping unit (1) to the other end.

2. The suturing device of claim 1, wherein, The trigger unit (4) is used for adjusting the opening and closing of the clamping unit (1), and the locking unit (5) is used for locking the trigger unit (4).

3. The suturing device of claim 2, wherein, The clamping unit (1) is arranged on the main body unit (3).

4. The suturing device of claim 3, wherein, The clamping unit (1) further comprises a push rod assembly (11) and a rotary clamp assembly (13).

5. The suturing device of claim 4, wherein, One end of the push rod assembly (11) is connected with the trigger unit (4), the other end is rotationally connected with the rotary clamp assembly (13), and the tail end of the rotary clamp assembly (13) is hingedly connected with the fixed clamp assembly (12).

6. The suturing device of claim 5, wherein, The trigger unit (4) comprises a trigger body (41) and a locking ratchet (42).

7. The suturing device of claim 6, wherein, The upper end of the trigger body (41) is fixedly connected with the push rod assembly (11), the locking ratchet (42) is arranged on the back side of the trigger body (41), and the ratchet surface of the locking ratchet (42) faces upward.

8. The suturing device of claim 7, wherein, The clamping locking unit (5) comprises a locking hook (51), an elastic sheet (52) and a fixed pin (53).

9. The suturing device of claim 8, wherein, The middle part of the locking hook (51) is pivotally connected to the main body unit (3) through a pivot, and the first end of the locking hook (51) is provided with a locking hook, which is downward and can be locked with the locking ratchet (42).

10. The suturing device of claim 9, wherein, The second end of the locking hook (51) is fixedly connected with one end of the elastic sheet (52), and the other end of the elastic sheet (52) is fixed on the main body unit (3) through the fixing pin (53).

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