A needle holder

Abstract

The application relates to a needle holder, belonging to the field of medical instruments, which comprises a handle, an upper jaw, a lower jaw, rollers, a closing mechanism and a driving mechanism, the upper jaw is hingedly arranged on the handle, the lower jaw is arranged on the handle, one roller is rotatably arranged on each of the upper jaw and the lower jaw on the side where the upper jaw and the lower jaw are close to each other, the closing mechanism is arranged on the handle and is used for driving the upper jaw to rotate towards the lower jaw, and the driving mechanism is arranged on the handle and is used for driving the rollers on the upper jaw and the lower jaw to rotate in opposite directions. The application has the effect of reducing the fine operation of twisting the wrist or pulling the needle holder for a long time by medical staff, effectively improving the problems that the medical staff are inconvenient to operate and are prone to fatigue when suturing through the needle holder.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a needle holder. Background Technology

[0002] Technological advancements have made it possible to perform surgery through smaller incisions, resulting in less tissue damage than traditional surgery. Through a keyhole-sized incision, surgeons can insert tiny light sources, cameras, and surgical instruments. Images transmitted to a monitor guide the manipulation of these instruments, a technique known as laparoscopic surgery. However, when performing suturing operations within the confined space of a cavity, specialized suturing tools such as needle holders are required.

[0003] Currently, most needle holders used in surgery are of a traditional design. After holding the needle with the upper and lower clamp heads, medical staff need to twist their wrists or pull the needle holders to adjust the needle's direction and complete the suturing. However, the confined space inside the cavity greatly restricts the operation of medical staff, requiring them to concentrate on precise operations for extended periods. This results in inconvenience and fatigue for medical staff when using needle holders for suturing. Summary of the Invention

[0004] To address the inconvenience and fatigue faced by medical staff when performing sutures using needle forceps, this application provides a needle forceps.

[0005] The needle holder provided in this application adopts the following technical solution:

[0006] A needle-holding pliers includes a handle, an upper jaw, a lower jaw, rollers, a closing mechanism, and a driving mechanism. The upper jaw is hinged to the handle, and the lower jaw is also mounted on the handle. One roller is rotatably mounted on each side of the upper and lower jaws that are close to each other. The closing mechanism is mounted on the handle and is used to drive the upper jaw to rotate towards the lower jaw. The driving mechanism is mounted on the handle and is used to drive the rollers on the upper and lower jaws to rotate in opposite directions.

[0007] By adopting the above technical solution, medical staff hold the handle, insert the upper and lower clamp heads into the cavity, and then the closing mechanism drives the upper clamp head to rotate towards the lower clamp head. This causes the rollers on the upper and lower clamp heads to clamp the suture needle. Then, the driving mechanism drives the rollers on the upper and lower clamp heads to rotate in opposite directions. The rollers can control the movement of the suture needle through friction to perform suturing. This reduces the need for medical staff to perform delicate operations such as twisting their wrists or pulling the needle holder for a long time, and effectively improves the problem of inconvenience and fatigue when medical staff perform suturing with needle holders.

[0008] Optionally, the drive mechanism includes a drive motor, a drive button, a drive gear, a linkage gear, and a conversion component. The drive motor is mounted on the handle, the drive button is mounted on the handle and electrically connected to the drive motor, the drive gear is coaxially mounted on one of the rollers, the linkage gear is coaxially mounted on the other roller, the drive gear meshes with the linkage gear, and the conversion component is mounted on the handle and is used to drive the drive gear to rotate when the output shaft of the drive motor rotates.

[0009] By adopting the above technical solution, medical staff press the drive button to start the drive motor. When the output shaft of the drive motor rotates, the conversion component drives the drive gear to rotate. The drive gear drives the driven gear to rotate, which in turn causes the two rollers to rotate synchronously in opposite directions. The two rollers synchronously drive the suture needle to move, improving the stability of the suture needle movement.

[0010] Optionally, the conversion assembly includes a conversion seat, a conversion gear, and an adjusting component. The conversion seat is rotatably mounted on a handle. The distance between the center of the conversion seat and the center of the drive gear is the same as the distance between the conversion seat and the center of the linkage gear. The drive motor is mounted on the conversion seat. The conversion gear is coaxially mounted on the output shaft of the drive motor and is used to mesh with the drive gear or the linkage gear. The adjusting component is mounted on the handle and is used to drive the conversion seat to rotate.

[0011] By adopting the above technical solution, medical staff can drive the conversion seat to rotate through the adjustment component. The conversion seat drives the drive motor and the conversion gear to rotate. Since the distance between the center of the conversion seat and the center of the drive gear is the same as the distance between the center of the conversion seat and the center of the linkage gear, the conversion seat can drive the conversion gear to mesh with the drive gear or the linkage gear. When the drive motor drives the conversion gear to rotate, the conversion gear can drive the drive gear or the linkage gear to rotate, thereby adjusting the rotation direction of the two rollers and improving the applicability and flexibility of the suture needle movement for different suture needs.

[0012] Optionally, the adjusting component includes a worm gear and a worm, the worm gear being coaxially mounted on the rotating shaft of the conversion seat, the worm being rotatably mounted on the handle, and the worm meshing with the worm gear.

[0013] By adopting the above technical solution, medical staff can rotate the worm gear, which in turn drives the worm wheel to rotate. The worm wheel then drives the conversion seat to rotate, causing the conversion seat to engage the rotating gear with the drive gear or linkage gear, making it convenient and quick to adjust the rotation direction of the roller.

[0014] Optionally, the closing mechanism includes a handle, a traction rope, and a torsion spring. The handle is hinged to the grip, the traction rope is mounted on the handle and connected to the side of the upper jaw away from the lower jaw, and the torsion spring is coaxially mounted on the hinge axis of the upper jaw and is used to drive the upper jaw to rotate toward the direction closer to the lower jaw.

[0015] By adopting the above technical solution, medical staff press the handle, pull the traction rope, and the traction rope pulls the upper clamp head, which moves the upper clamp head away from the lower clamp head. After the suture needle is between the upper and lower clamp heads, the medical staff release the handle, and the torsion spring drives the upper clamp head to rotate towards the lower clamp head. The roller on the upper clamp head can then clamp the suture needle onto the roller on the lower clamp head, which is convenient and quick to achieve the clamping of the suture needle.

[0016] Optionally, the lower jaw is provided with a positioning mechanism for positioning the needle between the lower jaw and the upper jaw. The positioning mechanism includes a positioning ring, a positioning sleeve, positioning protrusions, and a control component. Multiple positioning rings are spaced apart on the rollers on the lower jaw along the length direction of the lower jaw. The positioning sleeve is slidably disposed on the lower jaw along the length direction of the lower jaw. Multiple positioning protrusions are spaced apart on the positioning sleeve along the sliding direction of the positioning sleeve. The control component is disposed on the lower jaw and is used to drive the positioning sleeve to slide on the lower jaw.

[0017] By adopting the above technical solution, medical staff can use a handle to drive the suture needle to the roller on the lower clamp head. Then, the control component drives the positioning sleeve to slide on the lower clamp head. The positioning sleeve drives the positioning protrusion to move closer to the positioning ring. The positioning protrusion can then press the suture needle against the positioning ring. Then, the roller on the upper clamp head presses the suture needle against the roller on the lower clamp head. At this time, the positioning ring and the positioning protrusion, together with the rollers on the upper and lower clamp heads, position the suture needle, improve the stability of the suture needle, and thus improve the stability of subsequent suture needle movement, ensuring the suturing effect.

[0018] Optionally, the control assembly includes a control spring and a control rope. The control spring is disposed on the lower jaw and is used to drive the positioning sleeve to move the positioning protrusion toward the positioning ring. The control rope is disposed on the positioning sleeve and connected to the handle.

[0019] By adopting the above technical solution, when medical staff press the handle to move the upper clamp head away from the lower clamp head, the handle pulls the control rope, which in turn pulls the positioning sleeve, causing the positioning protrusion on the positioning sleeve to move away from the positioning ring. This makes it easier for the suture needle to be positioned between the positioning protrusion and the positioning ring when the upper and lower clamp heads are open. After the medical staff releases the handle, the positioning sleeve, under the action of the control spring, moves the positioning protrusion closer to the positioning ring. Then, when the roller on the upper clamp head presses the suture needle against the roller on the lower clamp head, the positioning protrusion simultaneously presses the suture needle against the positioning ring, making it convenient and quick to position the suture needle.

[0020] Optionally, the handle includes a rod and a grip, the rod is disposed on the grip, the handle, the worm gear and the drive button are all located on the grip, and the upper jaw and the lower jaw are located on the rod.

[0021] By adopting the above technical solution, medical staff can hold the gripping part and insert the rod into the cavity to perform suturing operations. During the process, the handle, worm gear and drive button on the gripping part can be used to easily clamp the suture needle, adjust the direction of movement of the suture needle and control the movement of the suture needle. The operation is convenient and improves the efficiency of surgical suturing.

[0022] Optionally, the roller on the lower jaw is slidably disposed on the lower jaw along the length direction of the lower jaw, and the sliding distance of the roller on the lower jaw is less than the width of the drive gear. The lower jaw is provided with an adjustment component for driving the roller on the lower jaw to slide.

[0023] By adopting the above technical solution, medical staff can adjust the roller on the lower clamp head to slide along the length of the lower clamp head by adjusting the component. During the sliding process, the lower clamp head applies a force to the suture needle to rotate along the length of the lower clamp head, thereby driving the suture needle to rotate between the roller on the lower clamp head and the roller on the upper clamp head, adjusting the angle of the suture needle, and improving the applicability of the suture needle to suturing needs at different angles.

[0024] Optionally, the adjustment assembly includes an adjustment screw, a slide rod, and a push rod. The adjustment screw is rotatably mounted on the grip and extends to the rod. The slide rod is slidably mounted on the rod and threadedly connected to the adjustment screw. The push rod is rotatably mounted on the slide rod and connected to a roller on the lower jaw.

[0025] By adopting the above technical solution, medical staff can rotate the adjusting screw, which drives the slide bar to slide. The slide bar then moves the push rod towards or away from the roller on the lower jaw head, thus conveniently and quickly achieving the sliding of the roller on the lower jaw head along its length.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The roller can control the movement of the suture needle through friction to perform suturing, reducing the need for medical staff to perform delicate operations such as twisting their wrists or pulling the needle holder for a long time. It effectively improves the problem of inconvenience and fatigue for medical staff when performing suturing with the needle holder.

[0028] 2. The conversion seat can drive the conversion gear to mesh with the drive gear or linkage gear. When the subsequent drive motor drives the conversion gear to rotate, the conversion gear can drive the drive gear or linkage gear to rotate, thereby adjusting the rotation direction of the two rollers and improving the applicability and flexibility of the suture needle movement for different suture needs during suture operations.

[0029] 3. The positioning ring and positioning protrusion, together with the rollers on the upper and lower clamps, position the suture needle, improving its stability and thus enhancing the stability of subsequent suture needle movement, ensuring the suturing effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the needle holder according to an embodiment of this application.

[0031] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application.

[0032] Figure 3 This is a cross-sectional structural diagram of the upper and lower jaws in an embodiment of this application.

[0033] Figure 4 This is a cross-sectional structural diagram of the upper and lower jaws from another perspective of an embodiment of this application.

[0034] Reference numerals: 1. Handle; 11. Rod; 12. Grip; 2. Upper jaw; 3. Lower jaw; 4. Roller; 5. Closing mechanism; 51. Handle; 52. Traction rope; 53. Torsion spring; 6. Drive mechanism; 61. Drive motor; 62. Drive button; 63. Drive gear; 64. Linkage gear; 65. Conversion component; 651. Conversion seat; 652. Conversion gear; 653. Adjusting component; 6531. Worm gear; 6532. Worm; 7. Positioning mechanism; 71. Positioning ring; 72. Positioning sleeve; 73. Positioning protrusion; 74. Control component; 741. Control spring; 742. Control rope; 8. Adjusting component; 81. Adjusting screw; 82. Slide rod; 83. Push rod. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a needle holder.

[0037] Reference Figure 1 , Figure 2 The needle holder includes a handle 1, an upper jaw 2, a lower jaw 3, a roller 4, a closing mechanism 5, a driving mechanism 6, a positioning mechanism 7, and an adjustment assembly 8. The handle 1 includes a rod 11 and a gripping part 12, with the rod 11 threaded onto the gripping part 12.

[0038] Reference Figure 2 , Figure 3 The lower jaw 3 is mounted on the end of the bar 11 away from the gripping part 12, and the upper jaw 2 is hinged to the end of the bar 11 away from the gripping part 12, facing the lower jaw 3. A roller 4 is rotatably mounted on the upper jaw 2, and a roller 4 is slidably mounted on the lower jaw 3 in the direction of its length. Figure 4 An adjustment assembly 8 is mounted on the lower jaw 3. The adjustment assembly 8 is used to drive the roller 4 on the lower jaw 3 to slide. The adjustment assembly 8 includes an adjustment screw 81, a slide rod 82, and a push rod 83. The adjustment screw 81 is rotatably mounted on the gripping part 12 and extends into the rod part 11. The slide rod 82 is slidably mounted in the rod part 11 along the length direction of the rod part 11. In this embodiment, a guide groove is provided in the rod part 11 along the length direction of the rod part 11. A guide block is formed on the slide rod 82. The guide block slides in the guide groove to guide the sliding of the slide rod 82 and improve the stability of the slide rod 82. One end of the push rod 83 is rotatably mounted on the slide rod 82, and the other end of the push rod 83 is connected to the roller 4 on the lower jaw 3.

[0039] After the medical staff clamps the suture needle using the rollers 4 on the lower clamp head 3 and the upper clamp head 2, they turn the adjusting screw 81. The adjusting screw 81 drives the sliding rod 82 to move away from or towards the push rod 83. The sliding rod 82 drives the push rod 83 to move away from or towards the rollers 4 on the lower clamp head 3. The push rod 83 then drives the rollers 4 on the lower clamp head 3 to move away from or towards the rod 11. The rollers 4 on the lower clamp head 3 and the rollers 4 on the upper clamp head 2 move relative to each other along the length of the lower clamp head 3. When the rollers 4 on the lower clamp head 3 move, they apply a force along the length of the lower clamp head 3 to the suture needle, which causes the suture needle to rotate towards or away from the rod 11, thereby adjusting the angle of the suture needle and improving its applicability to different suture angle requirements.

[0040] Reference Figure 2 , Figure 4The closing mechanism 5 is installed on the handle 1. The closing mechanism 5 is used to drive the upper jaw 2 to rotate toward the lower jaw 3. The closing mechanism 5 includes a handle 51, a traction rope 52 and a torsion spring 53. The handle 51 is hinged to the hand part. One end of the traction rope 52 is connected to the handle 51 and the other end of the traction rope 52 is connected to the side of the upper jaw 2 away from the lower jaw 3. The torsion spring 53 is sleeved on the hinge shaft of the upper jaw 2. One end of the torsion spring 53 is connected to the rod part 11 and the other end of the torsion spring 53 is connected to the upper jaw 2. The torsion spring 53 always has the tendency to drive the upper jaw 2 to rotate toward the lower jaw 3.

[0041] After the medical staff grasps the grip part 12 and inserts the rod part 11 into the cavity, they press the handle 51, which pulls the upper clamp head 2 and rotates it away from the lower clamp head 3, thus opening the upper clamp head 2 and the lower clamp head 3. Then, the rod part 11 is moved so that the suture needle is located between the upper clamp head 2 and the lower clamp head 3. After releasing the handle 51, the upper clamp head 2 rotates towards the lower clamp head 3 under the action of the torsion spring 53. The rollers 4 on the upper clamp head 2 and the lower clamp head 3 can clamp the suture needle, thus facilitating and quickly clamping and positioning the suture needle.

[0042] Reference Figure 3 , Figure 4 The positioning mechanism 7 is mounted on the lower jaw 3. The positioning mechanism 7 is used to position the suture needle between the lower jaw 3 and the upper jaw 2. The positioning mechanism 7 includes a positioning ring 71, a positioning sleeve 72, positioning protrusions 73, and a control assembly 74. Multiple positioning rings 71 are spaced apart on the roller 4 on the lower jaw 3 along the length of the roller 4. The positioning sleeve 72 is slidably mounted on the lower jaw 3 along the length of the lower jaw 3. Multiple positioning protrusions 73 are spaced apart on the positioning sleeve 72 along the length of the positioning sleeve 72. The multiple positioning protrusions 73 intersect with the multiple positioning rings 71. The control components 74 are spaced apart and mounted on the lower jaw 3. The control components 74 are used to drive the positioning sleeve 72 to slide on the lower jaw 3. The control components 74 include a control spring 741 and a control rope 742. One end of the control spring 741 is mounted on the lower jaw 3 and the other end of the control spring 741 is mounted on the positioning sleeve 72. The control spring 741 always has the tendency to drive the positioning sleeve 72 to slide away from the rod 11. One end of the control rope 742 is connected to the handle 51 and the other end of the control rope 742 is connected to the positioning sleeve 72.

[0043] When medical staff press handle 51 to open the upper clamp head 2 and lower clamp head 3, handle 51 pulls control rope 742, which in turn pulls positioning sleeve 72, causing it to slide closer to rod 11. Positioning sleeve 72 moves adjacent positioning protrusions 73 away from positioning ring 71. After the suture needle is positioned between the upper clamp head 2 and lower clamp head 3, the roller 4 on the upper clamp head 2 abuts against the roller 4 on the lower clamp head. The suture needle then moves between positioning ring 71 and positioning protrusions 73. At this point, the medical staff is not pressing handle 51. Control spring 741 drives positioning sleeve 72 to slide away from rod 11, causing adjacent positioning protrusions 73 to move closer to positioning ring 71. Positioning protrusions 73 and positioning ring 71 clamp the suture needle from both sides, simultaneously coordinating with the rollers 4 on the upper clamp head 2 and lower clamp head 3. The clamping of the suture needle limits its movement along the length of the rod 11 between the rollers 4 on the upper clamp head 2 and the lower clamp head 3. This improves the stability of the suture needle between the rollers 4 on the upper clamp head 2 and the lower clamp head 3, ensuring the stability of the suture needle and guaranteeing the suturing effect during subsequent suturing operations. Furthermore, medical personnel only need to press the handle 51 once to release the suture needle from the rollers 4 on the upper clamp head 2 and the lower clamp head 3. Simultaneously, the positioning ring 71 and the positioning protrusion 73 release the suture needle. After the medical personnel release the handle 51, when the rollers 4 on the upper clamp head 2 and the lower clamp head 3 clamp the suture needle, the positioning ring 71 and the positioning protrusion 73 can simultaneously position the suture needle, improving the convenience of positioning or releasing the suture needle for medical personnel.

[0044] Reference Figure 2 , Figure 3The drive mechanism 6 is mounted on the handle 1. The drive mechanism 6 is used to drive the rollers 4 on the upper jaw 2 and the lower jaw 3 to rotate in opposite directions. The drive mechanism 6 includes a drive motor 61, a drive button 62, a drive gear 63, a linkage gear 64, and a conversion component 65. The drive gear 63 is coaxially mounted on one of the rollers 4, and the linkage gear 64 is coaxially mounted on the other roller 4. The drive gear 63 and the linkage gear 64 mesh. The drive gear 63 and the linkage gear 64 have the same width. The sliding distance of the roller 4 on the upper jaw 2 along the length direction of the upper jaw 2 is less than the width of the drive gear 63 and the linkage gear 64. This ensures that when medical personnel drive the roller 4 on the lower jaw 3 to move along the length of the lower jaw 3, the drive gear 63 or the linkage gear 64 can always remain engaged. In this embodiment, the drive gear 63 is coaxially mounted on the roller 4 on the lower jaw 3, and the linkage gear 64 is coaxially mounted on the roller 4 on the upper jaw 2. The conversion assembly 65 is mounted on the gripping part 12. The conversion assembly 65 is used to drive the drive gear 63 and the driven gear to rotate synchronously when the output shaft of the drive motor 61 rotates. The conversion assembly 65 includes a conversion seat 651, a conversion gear 652, and an adjusting member 653. The conversion seat 651 is rotatably mounted on the gripping part 12. On the grip 12, the distance between the rotation axis of the conversion seat 651 and the center of the drive gear 63 is the same as the distance between the axis of the conversion seat 651 and the center of the linkage gear 64. The drive motor 61 is mounted on the conversion seat 651, and the drive button 62 is mounted on the grip 12. The drive button 62 is electrically connected to the drive motor 61. The conversion gear 652 is coaxially mounted on the output shaft of the drive motor 61. The conversion gear 652 is used to mesh with the drive gear 63 or the driven gear when the conversion seat 651 rotates. The adjusting member 653 is mounted on the handle 1 and is used to drive the conversion seat 651 to rotate. The component 653 includes a worm gear 6531 and a worm 6532. The worm gear 6531 is coaxially mounted on the rotating shaft of the conversion seat 651, and the worm 6532 is rotatably mounted on the gripping part 12. The worm 6532 meshes with the worm gear 6531. In this embodiment, a control rod is rotatably mounted on the gripping part 12. The control rod extends to the worm 6532. A driving bevel gear is coaxially mounted on the control rod at the worm 6532, and a driven bevel gear is coaxially mounted on the worm 6532. When medical personnel rotate the control rod, the control rod drives the driving bevel gear to rotate, which in turn drives the driven bevel gear to rotate, thereby driving the worm 6532 to rotate.

[0045] After the medical staff clamps and positions the suture needle using the rollers 4 on the upper clamp head 2 and the lower clamp head 3, they first turn the worm gear 6532. The worm gear 6532 drives the worm wheel 6531 to rotate, which in turn drives the conversion seat 651 to rotate closer to the drive gear 63 or the linkage gear 64. This causes the connecting gear to mesh with the drive gear 63 or the linkage gear 64. Then, the drive button 62 is pressed to start the drive motor 61. The output shaft of the drive motor 61 drives the linkage gear 64 to rotate, which in turn drives the drive gear 63 or the linkage gear 64 to rotate. Through the meshing of the drive gear 63 and the linkage gear 64, they are driven to rotate in opposite directions. The drive gear 63 and the linkage gear 64 drive the rollers 4 on the upper clamp head 2 and the lower clamp head 3 to rotate in opposite directions. During the rotation, the two rollers 4 synchronously drive the suture needle through friction. The movement of the suture needle allows for suturing operations, improving the stability of the needle's movement during suturing. Medical personnel can rotate the worm gear 6532 to drive the conversion seat 651, which in turn drives the conversion gear 652. Since the distance between the rotation axis of the conversion seat 651 and the center of the drive gear 63 is the same as the distance between the axis of the conversion seat 651 and the center of the linkage gear 64, the conversion gear 652 can mesh with both the drive gear 63 and the linkage gear 64. When the conversion gear 652 rotates, it drives either the drive gear 63 or the linkage gear 64, causing them to rotate in different directions. This, in turn, causes the roller 4 to rotate in different directions, changing the direction of the force applied to the suture needle. This adjusts the direction of the suture needle's movement, improving its applicability and flexibility for different suturing directions during the suturing operation.

[0046] The implementation principle of a needle holder according to an embodiment of this application is as follows: A medical professional grasps the gripping part 12, driving the rod part 11 to move the upper clamp head 2 and the lower clamp head 3 into the cavity. Then, the medical professional presses the handle 51, causing the upper clamp head 2 to move away from the lower clamp head 3, and causing the positioning protrusion 73 on the positioning sleeve 72 to move away from the adjacent positioning ring 71. Then, the rod part 11 is moved so that the suture needle is positioned between the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3. The handle 51 is then released, at which point the upper clamp head 2 is held in place by the torsion spring 53. Under the action of the upper jaw 2, the needle rotates closer to the lower jaw 3. The roller 4 on the upper jaw 2 clamps the suture needle onto the roller 4 on the lower jaw 3. At the same time, the control spring 741 drives the positioning sleeve 72 to move the positioning protrusion 73 closer to the positioning ring 71, so that the positioning protrusion 73 and the positioning ring 71 clamp the two sides of the suture needle, thereby positioning the suture needle. Then, the medical staff turns the worm gear 6532, so that the conversion gear 652 meshes with the drive gear 63 or the linkage gear 64, and then presses the drive button. 62. The drive motor 61 drives the conversion gear 652 to rotate, which in turn drives the drive gear 63 or the linkage gear 64 to rotate, thereby causing the two rollers 4 to rotate in opposite directions. The rollers 4 apply force to the suture needle, causing the suture needle to move and perform the suturing operation. During the process, medical staff can also change the direction of movement of the suture needle and drive the suture needle to rotate, and adjust the suturing angle of the suture needle, thereby improving the applicability of the suture needle to different suturing needs and improving the smoothness, accuracy and flexibility of the suturing operation performed by medical staff. In addition, medical staff can operate the handle 51, worm gear 6532, drive button 62 and adjusting screw 81 on the grip part 12, improving the convenience of operation for medical staff, thereby improving the efficiency of the suturing operation, reducing the need for medical staff to perform delicate operations of twisting their wrists or pulling the needle holder for a long time, and effectively improving the problem of inconvenience and fatigue when medical staff perform suturing with needle holders.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A needle holder, characterized in that: The device includes a handle (1), an upper jaw (2), a lower jaw (3), rollers (4), a closing mechanism (5), and a driving mechanism (6). The upper jaw (2) is hinged to the handle (1), and the lower jaw (3) is mounted on the handle (1). One roller (4) is rotatably mounted on each side of the upper jaw (2) and the lower jaw (3) that are close to each other. The closing mechanism (5) is mounted on the handle (1) and is used to drive the upper jaw (2) to rotate towards the lower jaw (3). The driving mechanism (6) is mounted on the handle (1) and is used to drive the rollers (4) on the upper jaw (2) and the lower jaw (3) to rotate in opposite directions. The closing mechanism (5) includes a handle (51), a traction rope (52) and a torsion spring (53). The handle (51) is hinged to the handle (1). The traction rope (52) is mounted on the handle (51) and connected to the side of the upper jaw (2) away from the lower jaw (3). The torsion spring (53) is coaxially mounted on the hinge axis of the upper jaw (2) and is used to drive the upper jaw (2) to rotate toward the direction closer to the lower jaw (3). The lower jaw (3) is provided with a positioning mechanism (7) for positioning the needle between the lower jaw (3) and the upper jaw (2). The positioning mechanism (7) includes a positioning ring (71), a positioning sleeve (72), a positioning protrusion (73), and a control component (74). The positioning ring (71) is provided with multiple rings at intervals along the length direction of the lower jaw (3) on the roller (4) on the lower jaw (3). The positioning sleeve (72) is slidably disposed on the lower jaw (3) along the length direction of the lower jaw (3). The positioning protrusion (73) is provided with multiple rings at intervals along the sliding direction of the positioning sleeve (72) on the positioning sleeve (72). The control component (74) is disposed on the lower jaw (3) and is used to drive the positioning sleeve (72) to slide on the lower jaw (3). The control assembly (74) includes a control spring (741) and a control rope (742). The control spring (741) is disposed on the lower jaw (3) and is used to drive the positioning sleeve (72) to move the positioning protrusion (73) toward the positioning ring (71). The control rope (742) is disposed on the positioning sleeve (72) and connected to the handle (51).

2. The needle holder according to claim 1, characterized in that: The drive mechanism (6) includes a drive motor (61), a drive button (62), a drive gear (63), a linkage gear (64), and a conversion component (65). The drive motor (61) is mounted on the handle (1), the drive button (62) is mounted on the handle (1) and electrically connected to the drive motor (61), the drive gear (63) is coaxially mounted on one of the rollers (4), the linkage gear (64) is coaxially mounted on the other roller (4), the drive gear (63) meshes with the linkage gear (64), and the conversion component (65) is mounted on the handle (1) and is used to drive the drive gear (63) to rotate when the output shaft of the drive motor (61) rotates.

3. The needle holder according to claim 2, characterized in that: The conversion assembly (65) includes a conversion seat (651), a conversion gear (652), and an adjusting member (653). The conversion seat (651) is rotatably mounted on the handle (1). The distance between the center of the conversion seat (651) and the center of the drive gear (63) is the same as the distance between the center of the conversion seat (651) and the center of the linkage gear (64). The drive motor (61) is mounted on the conversion seat (651). The conversion gear (652) is coaxially mounted on the output shaft of the drive motor (61) and is used to mesh with the drive gear (63) or the linkage gear (64). The adjusting member (653) is mounted on the handle (1) and is used to drive the conversion seat (651) to rotate.

4. A needle holder according to claim 3, characterized in that: The adjusting component (653) includes a worm gear (6531) and a worm (6532). The worm gear (6531) is coaxially mounted on the rotating shaft of the conversion seat (651), and the worm (6532) is rotatably mounted on the handle (1). The worm (6532) meshes with the worm gear (6531).

5. A needle holder according to claim 4, characterized in that: The handle (1) includes a rod (11) and a grip (12). The rod (11) is disposed on the grip (12). The handle (51), worm gear (6532) and drive button (62) are all located on the grip (12). The upper jaw (2) and lower jaw (3) are located on the rod (11).

6. A needle holder according to claim 2, characterized in that: The roller (4) on the lower jaw (3) is slidably disposed on the lower jaw (3) along the length direction of the lower jaw (3). The sliding distance of the roller (4) on the lower jaw (3) is less than the width of the drive gear (63). An adjustment component (8) for driving the roller (4) on the lower jaw (3) to slide is provided on the lower jaw (3).

7. A needle holder according to claim 6, characterized in that: The adjustment assembly (8) includes an adjustment screw (81), a slide rod (82) and a push rod (83). The adjustment screw (81) is rotatably mounted on the grip (12) and extends to the rod (11). The slide rod (82) is slidably mounted on the rod (11) and threadedly connected to the adjustment screw (81). The push rod (83) is rotatably mounted on the slide rod (82) and connected to the roller (4) on the lower jaw (3).

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