Needle-holding stitching instrument capable of continuously clamping stitching needle to advance or retreat

Abstract

The needle-holding stitching instrument comprises a forceps head assembly at the front end of a shaft tube and a shell at the tail end of the shaft tube, the forceps head assembly comprises forceps claws which can be opened or closed mutually, and roller assemblies capable of clamping the stitching needle are arranged in the forceps claws. The idler wheel assembly is in transmission with the bevel gear assembly in the shell through the transmission assembly, so that the idler wheel assembly rotates forwards or reversely, meanwhile, the bevel gear assembly is driven by the ratchet wheel assembly in a one-way mode, and the ratchet wheel assembly is controlled by the rotating handle in the shell, so that when the rotating handle is pressed, the ratchet wheel assembly can be in one-way transmission to the bevel gear assembly; when the rotating handle is reset, the ratchet wheel assembly does not transmit, the stitching instrument can achieve continuous advancing or retreating of the stitching needle, and the operation burden of a doctor during surgical stitching can be relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a needle holding suture device which can continuously clamp a suture needle and advance or retreat it. Background Art

[0002] Laparoscopic suturing and knotting surgeries require the use of needle holders to clamp the suturing needle. The suturing needle is a curved needle with an arc designed according to the rotation of the wrist. Laparoscopic suturing and knotting surgeries require the wrist to control the needle holder to operate the curved needle, which is rotated 90 to 180 degrees around the shaft tube of the needle holder in the patient's body. The difficulty of rotating the shaft tube of the needle holder is related to the surgeon's right hand (right-handed). In order to solve this problem, the prior art CN113015491A designs the opposite sides of the needle holder's claws into two groups of rollers, which clamp the curved needle by the two groups of rollers, and drive the rollers to rotate forward or reverse to achieve the curved needle rotating 90 to 180 degrees around the shaft tube of the needle holder. However, the prior art does not disclose the structure of the mechanism for driving the rollers in the handheld portion. Summary of the invention

[0003] The utility model provides a needle holding suture device capable of continuously clamping a suture needle to advance or retreat, comprising a shaft tube, a clamp head assembly at the front end of the shaft tube and a hand-held shell at the end of the shaft tube, the shell being rotatably connected to a rotating handle, the clamp head assembly comprising a second clamp jaw and a first clamp jaw that can rotate relative to the end of the second clamp jaw, a first roller and a first gear that are concentrically connected are installed in the first clamp jaw, a second roller and a second gear that are concentrically connected are installed in the second clamp jaw, when the first clamp jaw rotates to a closed position relative to the second clamp jaw, the first gear meshes with the second gear, and the second roller meshes with the second gear. The wheel and the second gear are configured to be coaxially connected to the transmission assembly in the shaft tube, and the transmission assembly is meshed with the bevel gear set in the shell for transmission. The bevel gear set includes bevel gear one and bevel gear two which are coaxially mounted on the gear shaft of the support arm and whose front cones are opposite to each other. A passive gear is also coaxially fixed to the end of the gear shaft. The rotating handle transmits the passive gear in one direction through the ratchet assembly. The support arm is slidably configured in the shell and can translate along the gear shaft. The gear shaft is perpendicular to the rotation plane of the rotating handle. After the support arm is toggled, the transmission assembly only meshes with bevel gear one or bevel gear two at a time.

[0004] Further, the first roller includes a first groove portion, and the second roller includes a second groove portion. When the first jaw is closed relative to the second jaw, the first groove portion faces the second groove portion, and the suture needle is driven between the first groove portion and the second groove portion.

[0005] Furthermore, the transmission assembly includes a shaft passing through the shaft tube, and one end of the shaft extending into the shell is coaxially fixed with a bevel gear three, and the front cone of the bevel gear three faces away from the pliers head assembly. The first end of the support arm is located in the shell, and the second end of the support arm extends from the window on the shell to connect the switch. The gear shaft is rotatably mounted on the first end of the support arm, and the support arm can translate along the window, and the extension direction of the window is perpendicular to the rotation plane of the rotating handle.

[0006] Further, the ratchet assembly is rotatably disposed on the support arm to drive the passive gear;

[0007] The ratchet assembly includes a large gear and a center wheel. The center wheel is rotatably installed on a support arm in a shell, and the outer periphery of the large gear is meshed with the passive gear. The inner periphery of the large gear is cut into a toothed groove with a saw blade-like profile concentric with the outer periphery. The center wheel is concentrically arranged in the toothed groove of the large gear. The side circumferential surface of the center wheel is provided with at least two pawls symmetrical with respect to the central axis of the center wheel, and one end of the pawl is rotatably connected to the center wheel. A spring is arranged between the other end of the pawl and the center wheel, one end of the spring is embedded in the center wheel, and the other end contacts the pawl. When the pawl is stretched open by the spring, it is embedded in the toothed groove of the saw blade-like profile. When the center wheel rotates in a first direction, the center wheel drives the pawl to rotate and is then stretched open by the spring to be stuck in the toothed groove, so that the large gear rotates synchronously in the same direction with the center wheel. When the center wheel rotates in the opposite direction, the pawl rotates relative to the toothed groove on the inner periphery of the large gear to compress the spring, and the large gear is slidably connected to the pawl.

[0008] Furthermore, one end of the rotating handle is rotatably connected to the shell, the middle part of the rotating handle is constructed to connect one end of the arc-shaped rack, the other end of the arc-shaped rack extends into the shell, and the arc-shaped rack is arranged with continuous teeth on the side facing the support arm. One end face of the center wheel is provided with a coaxially connected pinion, and the arc-shaped rack is meshed with the pinion to drive the ratchet assembly to rotate unidirectionally and drive the driven gear to rotate synchronously unidirectionally.

[0009] Furthermore, one end of the rotating handle is coaxially fixedly connected to the center wheel through a pin shaft, and is rotationally connected to the housing through the pin shaft.

[0010] Furthermore, the distance from the rotating handle to the handle at the end of the shell is not greater than the grip distance of the palm.

[0011] Compared with the prior art, the beneficial effects of the utility model are: first, by setting a relatively set group of transmissions including relatively set bevel gear assemblies to control the roller in the jaws to rotate counterclockwise or clockwise, thereby realizing the advancement or retreat of the suture needle; second, by setting a rotating handle and a ratchet assembly with unidirectional transmission therewith in the hand-held portion, the rotating handle can be pressed to rotate backward, and the unidirectional rotation of the roller in the jaws can be controlled by the unidirectionally driven ratchet; when the rotating handle is released, the roller in the jaws does not move, thereby realizing the continuous advancement or retreat of the suture needle; third, the rollers set in the jaws clamp each other, realizing the synchronous rotation of the rollers in the upper and lower jaws, thereby providing the suture needle with a stronger puncture force. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall external structure of the needle holding suture device of the utility model;

[0013] Figure 2 This is a schematic structural diagram of a rotating handle of a needle-holding suture device according to the utility model;

[0014] Figure 3 The ratchet assembly structure of the needle holding suture device of the utility model is schematically shown. Figure 1 ;

[0015] Figure 4 The ratchet assembly structure of the needle holding suture device of the utility model is schematically shown. Figure 2 ;

[0016] Figure 5 This is a schematic diagram of the structure of the bevel gear assembly in the rotating handle of the needle holding suture device of the utility model;

[0017] Figure 6 It is a schematic diagram of the structure of the lower clamp claw of the clamp head assembly in the needle holding suture device of the utility model;

[0018] Figure 7 This is a schematic diagram of the structure of the clamp head assembly in the needle holding suture device of the utility model;

[0019] Figure 8 It is a half-section structural schematic diagram of the clamp head assembly of the needle holding suture device of the utility model;

[0020] Fig. 9 This is a schematic structural diagram of a rotating handle of a needle-holding suture device according to the utility model;

[0021] Among them, 1a-the first jaw, 1b-the second jaw, 2-the suture needle, 3-the roller assembly, 4-the switch, 5-the rotating handle, 6-the clamping handle, 30-the arc rack, 31-the passive gear, 32-the ratchet assembly, 33a-the bevel gear one, 33b-the bevel gear two, 34-the shaft, 35-the bevel gear three, 36-the small gear, 38-the large gear, 37-the spring, 39-the ratchet, 40-the second gear, 41-the second roller, 42-the first gear, 43-the first roller, 44-the handle, 45-the sleeve, 46-the housing, 47-the shaft tube, 48-the gear shaft, 49-the support arm, and 50-the center wheel. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described in conjunction with the drawings of the embodiment of the present disclosure. Obviously, the described embodiment is a part of the embodiment of the present disclosure, not all of the embodiments. Based on the described embodiment of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure. It should be noted that the front cone in the utility model refers to the small end face of the bevel gear, the rear end refers to the side of the needle holder stapler close to the person when the person holds the needle holder stapler, and the front end refers to the side of the needle holder stapler away from the person when the person holds the needle holder stapler.

[0023] A needle-holding suture device for driving a suture needle forward or backward, such as Figure 1 As shown, it includes a pliers head assembly at the front end of the shaft tube 47 and a shell at the rear end of the shaft tube 47, the pliers head assembly includes a first jaw 1a and a second jaw 1b that can be closed or opened with each other, the shell 46 includes a hand-held portion 6 at the end and a rotating handle 5 extending from the shell 46, and a switch 4 is arranged on the shell 46, and the switch 4 can slide along the window on the shell 46.

[0024] like Figures 6 to 8 As shown, the inner side walls opposite to each other of the first jaw 1a and the second jaw 1b are both recessed with a cavity for accommodating a roller assembly. The second jaw 1b is fixedly mounted on the front end of the shaft tube 47. The end of the first jaw 1a can rotate relative to the end of the second jaw 1b. The end of the first jaw 1a is also connected to a transmission assembly, and the transmission assembly is controlled by the handheld portion, so that the first jaw 1a can be opened or closed relative to the second jaw 1b. A first roller 43 and a first gear 42 connected concentrically are installed in the first jaw 1a, and a second roller 41 and a second gear 40 connected concentrically are installed in the second jaw 1b. When the first jaw 1a rotates to a closed position relative to the second jaw 1b, the first gear 42 meshes with the second gear 40, so that the first gear 42 can be driven by the second gear 40, and the first roller 43 and the second roller 41 can drive the suture needle 2 located therebetween, as shown in FIG. Figure 6As shown, the second roller 41 and the second gear 40 are configured to be coaxially connected with the shaft 34 in the shaft tube 47 through the coupling sleeve 45. Figure 8 As shown, the first roller 43 includes a first groove portion, and the second roller 41 includes a second groove portion. When the first jaw 1a is in the closed position, the first groove portion faces the second groove portion. When the first jaw 1a is in the closed position, the suture needle is driven by the roller assembly 3 between the first groove portion of the first roller 43 and the second groove portion of the second roller 41. Figures 7 to 9 As shown, when the shaft 34 rotates, the coupling sleeve 45 is driven to rotate, thereby driving the roller 41 in the second jaw 1b to rotate, so that the second gear 40 thereon also rotates synchronously, so that when the second jaw 1b is closed, the first gear 42 on the roller 43 of the second jaw 1b engages with the second gear 40, thereby realizing the synchronous reverse rotation of the roller 43 of the second jaw 1b and the roller 41 of the second jaw 1b, thereby providing a stronger puncture force to the suture needle.

[0025] like Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the shaft 34 extends from the shaft tube 47 to the housing 46 at one end thereof, and is coaxially fixed with a bevel gear 35 of which the front cone deviates from the pliers head assembly. A bevel gear assembly is also arranged in the housing 46. The gear shaft 48 is rotatably mounted on the gear shaft 48 of the support arm 49. A pair of bevel gears of which the front cones are opposite to each other are mounted on the gear shaft 48, including a bevel gear 1 33a and a bevel gear 2 33b. The end of the gear shaft 48 is also coaxially fixed with a passive gear 31. The rotating handle 5 transmits the passive gear 31 in one direction through the ratchet assembly 32. The support arm 49 is slidably arranged in the housing 46 and can be translated along the gear shaft 48. The gear shaft 48 is perpendicular to the rotation plane of the rotating handle 5. After the support arm 49 or the gear shaft 48 is moved, the transmission assembly only meshes with the bevel gear 1 33a or the bevel gear 2 33b at a time. Because the bevel gear 1 33a and the bevel gear 2 33b are arranged relative to each other in the front cone, when the bevel gear 35 is meshed with one of the bevel gears, forward rotation is achieved. After the support arm 49 or the gear shaft 48 is moved, the bevel gear 3 35 is meshed with another bevel gear to achieve reverse rotation, thereby achieving the rotation direction switch of the shaft 34, and then achieving the forward and reverse rotation requirements of the front jaw roller. At the same time, since the two bevel gears on the bevel gear 1 33a and the bevel gear 2 33b have completely equal tooth moduli and an even number of teeth, the risk of the bevel gear 1 33a and the bevel gear 2 33b not being able to mesh with the bevel gear 3 35 during switching is avoided.

[0026] As an embodiment, the first end of the support arm 49 is arranged in the shell 46, and the second end of the support arm 49 extends from the window of the shell 46 to the outside of the shell 46 and is connected to the switch 4. The support arm 49 can move in the window, and the sliding direction is perpendicular to the rotation plane of the rotating handle 5. When the switch 4 is turned, the support arm 49 slides, so that the bevel gear 1 33a and the bevel gear 2 33 on the gear shaft 48 move in sequence, so that one of the bevel gear 1 33a or the bevel gear 2 33b on the gear shaft 48 can always engage with the bevel gear 3 35, and the passive gear 31 and the ratchet assembly 32 are both rotatably arranged on the support arm 49, which can stably maintain the meshing transmission.

[0027] like Figures 3 to 5 As shown, the rotating shaft of the ratchet assembly 32 is parallel to the gear shaft 48 and is both arranged on the support arm 49. The ratchet assembly 32 includes a large gear 38, a center wheel 50, and a small gear 36 which are arranged concentrically. The small gear 36 is rotatably installed on the support arm 49 and meshes with the arc rack 30. The outer periphery of the large gear 38 meshes with gear one 31. The inner periphery of the large gear 38 is cut into a toothed groove with a saw blade-like profile concentric with the outer periphery. The center wheel 50 is concentrically arranged in the saw blade-like profile of the large gear 38. One end face of the center wheel 50 is coaxially connected to the gear three 36. At least two pawls 39 symmetrical with respect to the central axis of the center wheel 50 are arranged on the circumferential side wall of the center wheel 50, and one end of the pawl 39 is rotatably connected to the center wheel 50. A spring 37 is arranged between the other end of the pawl 39 and the center wheel 50. One end of the spring 37 is embedded in the center wheel 50, and the other end is in contact with the pawl 39. When the center wheel 50 rotates counterclockwise, the center wheel 50 drives the pawl 39 to rotate and is then stretched open by the spring 37 until it is stuck in the toothed groove, so that the large gear 38 rotates synchronously in the same direction relative to the center wheel 5. When the center wheel 50 rotates clockwise in the opposite direction, the pawl 39 rotates relative to the toothed groove on the inner circumference of the large gear 38, compressing the spring 37, and the large gear 38 is slidably connected with the pawl 39.

[0028] As a first implementation method, Figure 2 As shown, one end of the rotating handle 5 is rotatably connected to the housing 46, and the sector surface formed by the rotation of the rotating handle 5 is in the plane where the shaft 34 and the hand-held part 6 are located or parallel to it. The middle part of the rotating handle 5 is configured to connect one end of the arc-shaped rack 30, and the other end of the arc-shaped rack 30 extends into the housing 46. The arc-shaped rack 30 is arranged with continuous teeth on one side facing the support arm 49. The arc-shaped rack 30 is used to drive the ratchet assembly 32 to rotate unidirectionally, and the driving gear 1 31 to rotate unidirectionally synchronously. The distance between the end of the rotating handle 5 extending out of the housing 46 and the handle 44 is not greater than the gripping distance of the palm.

[0029] As another embodiment, Fig. 9 As shown, one end of the rotating handle 5 is coaxially fixedly connected to the center wheel 50 through a pin shaft, and is rotatably connected to the housing 46 through the pin shaft.

[0030] like Figure 2 and Figure 3 As shown, when the rotary handle 5 is pressed and rotated backward, the arc-shaped rack 30 protruding from the middle of the rotary handle 5 meshes with the pinion 36 in the ratchet assembly 32, so that the pinion 36 rotates counterclockwise, or the rotary handle 5 directly drives the center wheel 50 to rotate counterclockwise, and the center wheel 50 also rotates counterclockwise. The ratchet 39 rotates under the action of the center wheel 50 and compresses the compression spring 37 toward the center. The spring 37 gives a reverse elastic force, so that the ratchet 39 is stably stuck in the toothed groove of the saw blade-shaped profile on the inner periphery of the large gear 38 In this way, the counterclockwise rotation of the center wheel 50 can drive the large gear 38 to rotate counterclockwise, so that the passive gear 31 rotates clockwise, so that the bevel gear 1 33a or the bevel gear 2 33b rotates clockwise, so that the bevel gear 3 35 rotates clockwise, and the arc-shaped rack 30 protruding from the middle of the rotating handle 5 meshes with the small gear 36 in the ratchet assembly 32, so that the shaft 34 rotates clockwise, or the rotating handle 5 directly drives the center wheel 50 to rotate clockwise, and finally the roller in the roller assembly 3 rotates. After the push handle 5 is rotated forward and released, the center wheel 50 rotates clockwise. At this time, the ratchet 39 presses the compression spring 37 into the toothed groove under the action of the saw blade profile on the inner periphery of the large gear 38. Therefore, when the center wheel 50 rotates clockwise, the inner periphery of the large gear 38 and the ratchet 39 are distributed in the same direction, and the ratchet 39 cannot drive the large gear 38 to rotate. Therefore, the large gear 38 and the bevel gear 31 will not rotate. In this way, the rotation of the pressing and rotating handle 5 drives the roller assembly 3 in the pliers head assembly to rotate, and after the rotating handle 5 is rotated in the opposite direction, the roller assembly 3 in the pliers head assembly will not be driven to rotate.

[0031] When in use, the upper clamp claw 1a is controlled to rotate downward and close, thereby clamping the suture needle 2. At this time, the bevel gear 2 33b in the bevel gear set is meshed with the bevel gear 3 35. When the rotating handle 5 is pressed backward by hand, the center wheel 50 rotates counterclockwise, driving the large gear 38 to rotate counterclockwise, and then the passive gear 31 rotates clockwise, so that the bevel gear 2 33b rotates clockwise, and then drives the bevel gear 3 35 to rotate clockwise. In turn, the shaft 34 and the roller assembly 3 at its front end rotate clockwise, and the suture needle rotates clockwise under the action of the roller. Release the rotating handle 5 to return it to its initial position. During this resetting process, the ratchet assembly will not move, so the roller 3 will not move. This reciprocating process allows the suture needle 2 to rotate clockwise to achieve the suturing function. At this time, the switch 4 is manually turned, so that the bevel gear 1 33a is meshed with the bevel gear 35. When the rotating handle 5 is pressed backward, the center wheel 50 rotates counterclockwise, driving the large gear 38 to rotate counterclockwise, and then the passive gear 31 rotates clockwise, so that the bevel gear 1 33a rotates clockwise. Here, the shaft 34 and the roller assembly 3 at its front end rotate counterclockwise, and the suture needle rotates counterclockwise under the action of the roller. Release the rotating handle 5 to return it to the initial position. In this resetting process, the ratchet assembly will not move, so the roller 3 does not move. This reciprocating process causes the suture needle 2 to rotate counterclockwise and then the suture needle is retracted. When the upper jaw 1a is controlled to rotate upward, the upper jaw 1a is opened. In this way, the entire suture process is completed.

Claims

1. A needle holder suture device capable of continuously clamping a suture needle to move forward or backward, characterized in that: The invention comprises a shaft tube (47), a clamp head assembly at the front end of the shaft tube (47) and a shell (46) at the end of the shaft tube (47), wherein the shell (46) is rotatably connected to a rotating handle (5), and the clamp head assembly comprises a second clamp jaw (1b) and a first clamp jaw (1a) which can rotate relative to the end of the second clamp jaw (1b), wherein the first clamp jaw (1a) is provided with a first roller (43) and a first gear (42) which are coaxially connected, and the second clamp jaw (1b) is provided with a second roller (41) and a second gear (40) which are coaxially connected, and when the first clamp jaw (1a) rotates relative to the second clamp jaw (1b) to a closed position, the first gear (42) meshes with the second gear (40), and the second roller (41) and the second gear (40) are configured to engage with the shaft tube (47). ) is coaxially connected to a transmission assembly in the housing (46), the transmission assembly meshes with a bevel gear set (33) in the housing (46), the bevel gear set comprises a bevel gear 1 (33a) and a bevel gear 2 (33b) which are coaxially mounted on a gear shaft (48) of a support arm (49) and whose front cones face each other, a passive gear (31) is coaxially fixed to the end of the gear shaft (48), the rotating handle (5) unidirectionally transmits the passive gear (31) through the ratchet assembly (32), the support arm (49) is slidably arranged in the housing (46) and can translate along the gear shaft (48), the gear shaft (48) is perpendicular to the rotation plane of the rotating handle (5), and after the support arm (49) is moved, the transmission assembly only meshes with the bevel gear 1 (33a) or the bevel gear 2 (33b) each time.

2. The needle holder suture device according to claim 1, characterized in that: The first roller (43) includes a first groove portion, and the second roller (41) includes a second groove portion. When the first jaw (1a) is closed relative to the second jaw (1b), the first groove portion faces the second groove portion, and the suture needle is driven between the first groove portion and the second groove portion.

3. The needle holder suture device according to claim 1, characterized in that: The transmission assembly comprises a shaft (34) passing through a shaft tube (47); one end of the shaft (34) extending into a housing (46) is coaxially fixed with a bevel gear three (35); the front cone of the bevel gear three (35) faces away from the pliers head assembly; the first end of a support arm (49) is located in the housing (46); the second end of the support arm (49) extends out of a window on the housing (46) to connect to the switch (4); a gear shaft (48) is rotatably mounted on the first end of the support arm (49); the support arm (49) can translate along the window; and the extension direction of the window is perpendicular to the rotation plane of the rotating handle (5).

4. The needle holder suture device according to claim 1, characterized in that: The ratchet assembly (32) is rotatably disposed on the support arm (49) and is used to drive the passive gear (31); The ratchet assembly (32) comprises a large gear (38) and a center wheel (50). The center wheel (50) is rotatably mounted on a support arm (49) in a housing (46). The outer periphery of the large gear (38) meshes with the driven gear (31). The inner periphery of the large gear (38) is cut into a toothed groove with a saw blade-like profile concentric with the outer periphery. The center wheel (50) is concentrically arranged in the toothed groove of the large gear (38). The side circumferential surface of the center wheel (50) is provided with at least two ratchet pawls (39) symmetrical with respect to the central axis of the center wheel (50), and one end of the ratchet pawl (39) is rotatably connected to the center wheel (50), and the other end of the ratchet pawl (39) is connected to the center wheel (50). A spring (37) is arranged, one end of the spring (37) is embedded in the center wheel (50), and the other end is in contact with a pawl (39). When the pawl (39) is opened by the spring (37), it is embedded in the toothed groove of the saw blade-shaped profile. When the center wheel (50) rotates in a first direction, the center wheel (50) drives the pawl (39) to rotate and then is opened by the spring (37) until it is stuck in the toothed groove, so that the large gear (38) rotates synchronously with the center wheel (50) in the same direction. When the center wheel (50) rotates in the opposite direction, the pawl (39) rotates relative to the toothed groove on the inner circumference of the large gear (38), compressing the spring (37), and the large gear (38) is slidably connected with the pawl (39).

5. The needle holder suture device according to claim 4, characterized in that: One end of the rotating handle (5) is rotatably connected to the housing (46), the middle part of the rotating handle (5) is constructed to be connected to one end of an arc-shaped rack (30), the other end of the arc-shaped rack (30) extends into the housing (46), a side of the arc-shaped rack (30) facing the support arm (49) is provided with continuous teeth, one end surface of the center wheel (50) is provided with a coaxially connected pinion (36), the arc-shaped rack (30) is meshed with the pinion (36), and is used to drive the ratchet assembly (32) to rotate unidirectionally, and drive the driven gear (31) to rotate unidirectionally synchronously.

6. The needle holder suture device according to claim 4, characterized in that: One end of the rotating handle (5) is coaxially fixedly connected to the center wheel (50) via a pin shaft, and is rotationally connected to the housing (46) via the pin shaft.

7. The needle holder suture device according to claim 1, characterized in that: The distance between the rotating handle (5) and the handle (44) at the end of the housing is no greater than the grip distance of the palm.

Images