Needle forceps

Abstract

The invention relates to a needle holding forceps, which belongs to the field of medical instruments and comprises a handle, an upper forceps head, a lower forceps head, rollers, a closing mechanism and a driving mechanism, the upper forceps head is hinged to the handle, the lower forceps head is arranged on the handle, and the rollers are rotatably arranged on the sides, close to each other, of the upper forceps head and the lower forceps head respectively. The closing mechanism is arranged on the handle and used for driving the upper plier head to rotate in the direction close to the lower plier head, and the driving mechanism is arranged on the handle and used for driving the rolling wheels on the upper plier head and the lower plier head to rotate reversely. The needle holding forceps have the advantages that the fine operation of twisting the wrist or pulling the needle holding forceps for a long time in a highly concentrated mode by medical staff is reduced, and the problems that when the medical staff conduct suture through the needle holding forceps, operation is inconvenient, and fatigue is prone to occurring are effectively solved.

Description

Technical Field

[0001] The present application relates to the field of medical instruments, and in particular to a needle holding forceps. Background Art

[0002] Due to the advancement of technology, it is possible to perform surgery through smaller incisions, which causes less damage to tissues than traditional surgery. Through a keyhole-sized incision, surgeons can insert tiny light sources, cameras and surgical instruments, and use the images transmitted to the monitor to guide the operation of surgical instruments. This type of surgery is called laparoscopic surgery. When suturing in a small space inside a cavity, special suturing tools such as needle holders are required.

[0003] At present, most of the needle holders used in surgery are of traditional design. After clamping the needle with the upper and lower clamp heads, medical staff need to twist their wrists or pull the needle holders to adjust the direction of the needle to achieve suturing. However, the narrow space in the cavity greatly restricts the operation of medical staff, causing the medical staff's wrists to be highly concentrated for a long time to perform delicate operations, resulting in inconvenience and fatigue when medical staff use needle holders to suturing. Summary of the invention

[0004] In order to improve the problem of inconvenient operation and easy fatigue of medical staff when using needle holding forceps to suture, the present application provides a needle holding forceps.

[0005] The needle holding forceps provided in this application adopts the following technical solution: A needle holding forceps comprises a handle, an upper forceps head, a lower forceps head, a roller, a closing mechanism and a driving mechanism, wherein the upper forceps head is hingedly arranged on the handle, the lower forceps head is arranged on the handle, one roller is rotatably arranged on the side where the upper forceps head and the lower forceps head are close to each other, the closing mechanism is arranged on the handle and is used to drive the upper forceps head to rotate in a direction close to the lower forceps head, and the driving mechanism is arranged on the handle and is used to drive the rollers on the upper forceps head and the lower forceps head to rotate in the opposite direction.

[0006] By adopting the above technical solution, the medical staff holds the handle, inserts the upper and lower clamp heads into the cavity, and then drives the upper clamp head to rotate in the direction close to the lower clamp head through the closing mechanism, so that the rollers on the upper and lower clamp heads clamp the suture needle, and then drives the rollers on the upper and lower clamp heads to rotate in opposite directions through the driving mechanism. The rollers can control the movement of the suture needle through friction to perform suturing, reducing the medical staff's long-term and highly concentrated delicate operations of twisting their wrists or pulling the needle holder, and effectively improving the problem of inconvenient operation and easy fatigue of medical staff when suturing with the needle holder.

[0007] Optionally, the driving mechanism includes a driving motor, a driving button, a driving gear, a linkage gear and a conversion assembly, wherein the driving motor is arranged on the handle, the driving button is arranged on the handle and electrically connected to the driving motor, the driving gear is coaxially arranged on one of the rollers, the linkage gear is coaxially arranged on the other roller, the driving gear is meshed with the linkage gear, and the conversion assembly is arranged on the handle and is used to drive the driving gear to rotate when the output shaft of the driving motor rotates.

[0008] By adopting the above technical solution, the medical staff presses 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, and the drive gear drives the driven gear to rotate, so that the two rollers rotate synchronously in opposite directions. The two rollers synchronously drive the suture needle to move, thereby improving the stability of the suture needle movement.

[0009] Optionally, the conversion assembly includes a conversion seat, a conversion gear and an adjusting member, the conversion seat is rotatably set on the handle, the distance between the conversion seat and the center of the driving gear is the same as the distance between the conversion seat and the center of the linkage gear, the driving motor is set on the conversion seat, the conversion gear is coaxially set on the output shaft of the driving motor and is used to engage with the driving gear or the linkage gear, and the adjusting member is set on the handle and is used to drive the conversion seat to rotate.

[0010] By adopting the above technical solution, medical staff drives the conversion seat to rotate through the adjusting part, and the conversion seat drives the driving motor and the conversion gear to rotate. Since the distance between the conversion seat and the center of the driving gear is the same as the distance between the conversion seat and the center of the linkage gear, the conversion seat can drive the conversion gear to engage with the driving gear or the linkage gear. When the subsequent driving motor drives the conversion gear to rotate, the conversion gear can drive the driving gear or the linkage to rotate, thereby adjusting the rotation direction of the two rollers, thereby improving the applicability and flexibility of driving the suture needle to move for suturing operations to meet different suturing needs.

[0011] Optionally, the adjusting member includes a worm wheel and a worm, the worm wheel is coaxially arranged on the rotating shaft of the conversion seat, the worm is rotatably arranged on the handle, and the worm is meshed with the worm wheel.

[0012] By adopting the above technical solution, medical staff rotate the worm, and the worm can drive the worm wheel to rotate, and the worm wheel then drives the conversion seat to rotate, so that the conversion seat drives the rotating gear to engage with the driving gear or the linkage gear, so as to quickly and conveniently adjust the rotation direction of the roller.

[0013] Optionally, the closing mechanism includes a handle, a traction rope and a torsion spring, the handle is hinged on the handle, the traction rope is arranged on the handle and connected to the side of the upper pliers head facing away from the lower pliers head, and the torsion spring is coaxially arranged on the hinge shaft of the upper pliers head and is used to drive the upper pliers head to rotate in a direction close to the lower pliers head.

[0014] By adopting the above technical solution, the medical staff presses the handle, pulls the traction rope with the handle, and the traction rope then pulls the upper clamp head, so that the upper clamp head can be moved away from the lower clamp head. After the suture needle is located between the upper clamp head and the lower clamp head, the medical staff releases the handle, and the torsion spring drives the upper clamp head to rotate in the direction close to the lower clamp head. The roller on the upper clamp head can clamp the suture needle on the roller on the lower clamp head, so that the suture needle can be clamped quickly and conveniently.

[0015] Optionally, the lower pliers head is provided with a positioning mechanism for positioning the needle between the lower pliers head and the upper pliers head, the positioning mechanism includes a positioning ring, a positioning sleeve, a positioning protrusion and a control assembly, a plurality of the positioning rings are arranged on the roller on the lower pliers head at intervals along the length direction of the lower pliers head, the positioning sleeve is arranged on the lower pliers head for sliding along the length direction of the lower pliers head, a plurality of the positioning protrusions are arranged on the positioning sleeve at intervals along the sliding direction of the positioning sleeve, and the control assembly is arranged on the lower pliers head and is used to drive the positioning sleeve to slide on the lower pliers head.

[0016] By adopting the above technical solution, medical staff drives the suture needle to abut against the roller on the lower clamp head through the handle, and then drives the positioning sleeve to slide on the lower clamp head through the control component. The positioning sleeve drives the positioning protrusion to move in the direction close to the positioning ring, and the positioning protrusion can press the suture needle against the positioning ring, and 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, in conjunction with the roller on the upper clamp head and the roller on the lower clamp head, position the suture needle, thereby improving the stability of the suture needle, and then improving the stability of the subsequent movement of the suture needle, thereby ensuring the suturing effect.

[0017] Optionally, the control assembly includes a control spring and a control rope, wherein the control spring is disposed on the lower clamp head and is used to drive the positioning sleeve to drive the positioning protrusion to move toward the positioning ring, and the control rope is disposed on the positioning sleeve and connected to the handle.

[0018] By adopting the above technical solution, when the medical staff presses the handle to make the upper clamp head move away from the lower clamp head, the handle pulls the control rope, and the control rope pulls the positioning sleeve to make the positioning protrusion on the positioning sleeve move away from the positioning ring, so that the suture needle is conveniently located between the positioning protrusion and the positioning ring when the upper clamp head and the lower clamp head are opened. After the medical staff releases the handle, the positioning sleeve drives the positioning protrusion to move toward the positioning ring under the action of the control spring, and 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, so that the suture needle is conveniently and quickly positioned.

[0019] Optionally, the handle includes a rod portion and a grip portion, the rod portion is arranged on the grip portion, the handle, the worm and the drive button are all located on the grip portion, and the upper pliers head and the lower pliers head are located on the rod portion.

[0020] By adopting the above technical solution, medical staff can hold the gripping part and extend 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 conveniently clamp the suture needle, adjust the moving direction of the suture needle and control the movement of the suture needle. The operation is convenient and the efficiency of surgical suturing is improved.

[0021] Optionally, the roller on the lower pliers head is slidably arranged on the lower pliers head along the length direction of the lower pliers head, the sliding distance of the roller on the lower pliers head is smaller than the width of the driving gear, and the lower pliers head is provided with an adjustment component for driving the roller on the lower pliers head to slide.

[0022] By adopting the above technical solution, medical staff drives the roller on the lower clamp head to slide along the length direction of the lower clamp head through the adjustment component. During the sliding process, the lower clamp head applies a force to the suture needle to rotate along the length direction 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, thereby adjusting the angle of the suture needle and improving the applicability of the suture needle to suturing needs at different angles.

[0023] Optionally, the adjustment assembly includes an adjusting screw, a sliding rod and a push rod, wherein the adjusting screw is rotatably set on the gripping portion and extends to the rod portion, the sliding rod is slidably set on the rod portion and is threadedly connected to the adjusting screw, and the push rod is rotatably set on the sliding rod and connected to the roller on the lower clamp head.

[0024] By adopting the above technical solution, medical staff rotates the adjusting screw, the adjusting screw drives the sliding rod to slide, and the sliding rod drives the push rod to move toward the roller on the lower clamp head or away from the roller on the lower clamp head, so that the roller on the lower clamp head can slide along the length direction of the lower clamp head conveniently and quickly.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The roller can control the movement of the suture needle through friction to perform suturing, reducing the medical staff's long-term and highly concentrated fine operation of twisting the wrist or pulling the needle holder, effectively improving the problem of inconvenience and fatigue of medical staff when suturing with the needle holder; 2. The conversion seat can drive the conversion gear to mesh with the driving gear or the linkage gear. When the subsequent driving motor drives the conversion gear to rotate, the conversion gear can drive the driving gear or the linkage to rotate, thereby adjusting the rotation direction of the two rollers, thereby improving the applicability and flexibility of driving the suture needle to move for suture operations to meet different suture requirements; 3. The positioning ring and the positioning protrusion cooperate with the rollers on the upper clamp head and the lower clamp head to position the suture needle, thereby improving the stability of the suture needle and the stability of the subsequent movement of the suture needle to ensure the suturing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the needle holding forceps according to an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the upper clamp head and the lower clamp head of an embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the upper clamp head and the lower clamp head from another perspective of the embodiment of the present application.

[0030] 1. Handle; 11. Rod; 12. Grip; 2. Upper pliers; 3. Lower pliers; 4. Roller; 5. Closing mechanism; 51. Handle; 52. Traction rope; 53. Torsion spring; 6. Driving mechanism; 61. Driving motor; 62. Driving button; 63. Driving gear; 64. Linkage gear; 65. Conversion assembly; 651. Conversion seat; 652. Conversion gear; 653. Adjusting piece; 6531. Worm gear; 6532. Worm; 7. Positioning mechanism; 71. Positioning ring; 72. Positioning sleeve; 73. Positioning protrusion; 74. Control assembly; 741. Control spring; 742. Control rope; 8. Adjusting assembly; 81. Adjusting screw; 82. Sliding rod; 83. Push rod. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a needle holding forceps.

[0033] Reference Figure 1 , Figure 2The needle holding forceps include a handle 1, an upper forceps head 2, a lower forceps head 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 portion 11 and a gripping portion 12. The rod portion 11 is threadedly mounted on the gripping portion 12.

[0034] Reference Figure 2 , Figure 3 The lower clamp head 3 is mounted on the end of the rod 11 away from the gripping portion 12, the upper clamp head 2 is hingedly mounted on the end of the rod 11 away from the gripping portion 12 toward the lower clamp head 3, a roller 4 is rotatably mounted on the upper clamp head 2, and a roller 4 is slidably mounted on the lower clamp head 3 in the direction of the length direction of the lower clamp head 3; combined Figure 4 The adjusting assembly 8 is installed on the lower clamp head 3. The adjusting assembly 8 is used to drive the roller 4 on the lower clamp head 3 to slide. The adjusting assembly 8 includes an adjusting screw 81, a slide bar 82 and a push rod 83. The adjusting screw 81 is rotatably installed on the gripping portion 12, and the adjusting screw 81 extends into the rod portion 11. The slide bar 82 is slidably installed in the rod portion 11 along the length direction of the rod portion 11. In this embodiment, a guide groove is opened in the rod portion 11 along the length direction of the rod portion 11, and a guide block is formed on the slide bar 82. The guide block slides in the guide groove to guide the sliding of the slide bar 82 and improve the stability of the slide bar 82; one end of the push rod 83 is rotatably installed on the slide bar 82, and the other end of the push rod 83 is connected to the roller 4 on the lower clamp head 3.

[0035] After the medical staff clamps the suture needle by the rollers 4 on the lower clamp head 3 and the rollers 4 on the upper clamp head 2, they turn the adjusting screw 81, and the adjusting screw 81 drives the sliding rod 82 to move in the direction away from or close to the push rod 83, and the sliding rod 82 drives the push rod 83 to move in the direction away from or close to the rollers 4 on the lower clamp head 3, and the push rod 83 can drive the rollers 4 on the lower clamp head 3 to move in the direction away from or close to the rod portion 11, and the rollers 4 on the lower clamp head 3 and the rollers 4 on the upper clamp head 2 move relative to each other in the length direction of the lower clamp head 3, and when the rollers 4 on the lower clamp head 3 move, a force is applied to the suture needle along the length direction of the lower clamp head 3, so that the suture needle can be rotated toward the direction close to the rod portion 11 or away from the rod portion 11, thereby adjusting the angle of the suture needle, thereby improving the applicability of the suture needle to meet the requirements of different suture angles.

[0036] Reference Figure 2 , Figure 4The closing mechanism 5 is installed on the handle 1, and the closing mechanism 5 is used to drive the upper pliers head 2 to rotate toward the direction close to the lower pliers head 3. The closing mechanism 5 includes a handle 51, a traction rope 52 and a torsion spring 53. The handle 51 is hingedly installed on the hand-held 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 pliers head 2 away from the lower pliers head 3. The torsion spring 53 is sleeved on the hinge axis of the upper pliers head 2, one end of the torsion spring 53 is connected to the rod 11, and the other end of the torsion spring 53 is connected to the upper pliers head 2. The torsion spring 53 always has a tendency to drive the upper pliers head 2 to rotate toward the direction close to the lower pliers head 3.

[0037] After the medical staff holds the gripping portion 12 and extends the rod 11 into the cavity, they press the handle 51 so that the handle 51 pulls the upper clamp head 2 and causes the upper clamp head 2 to rotate in a direction away from the lower clamp head 3, so that the upper clamp head 2 and the lower clamp head 3 are opened, and then move the rod 11 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 in a direction close to the lower clamp head 3 under the action of the torsion spring 53, and the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3 can clamp the suture needle, thereby conveniently and quickly clamping and positioning the suture needle.

[0038] Reference Figure 3 , Figure 4 The positioning mechanism 7 is installed on the lower clamp head 3. The positioning mechanism 7 is used to position the suture needle between the lower clamp head 3 and the upper clamp head 2. The positioning mechanism 7 includes a positioning ring 71, a positioning sleeve 72, a positioning protrusion 73 and a control component 74. A plurality of positioning rings 71 are installed on the roller 4 on the lower clamp head 3 at intervals along the length direction of the roller 4. The positioning sleeve 72 is slidably installed on the lower clamp head 3 along the length direction of the lower clamp head 3. A plurality of positioning protrusions 73 are installed on the positioning sleeve 72 at intervals along the length direction of the positioning sleeve 72. The plurality of positioning protrusions 73 are cross-shaped with the plurality of positioning rings 71. The control assembly 74 is installed on the lower clamp head 3 at intervals. The control assembly 74 is used to drive the positioning sleeve 72 to slide on the lower clamp head 3. The control assembly 74 includes a control spring 741 and a control rope 742. One end of the control spring 741 is installed on the lower clamp head 3, and the other end of the control spring 741 is installed on the positioning sleeve 72. The control spring 741 always has a tendency to drive the positioning sleeve 72 to slide in a direction 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.

[0039] When the clamp head 7 is in the state of not pressing the handle 51, the control spring 741 drives the positioning sleeve 72 to slide in the direction away from the rod portion 11, and the positioning sleeve 72 drives the adjacent positioning protrusion 73 to approach the positioning ring 71. The positioning protrusion 73 and the positioning ring 71 can clamp the two sides of the suture needle, and at the same time cooperate with the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3 to The clamping of the suture needle can limit the position of the suture needle and restrict the movement of the suture needle between the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3 along the length direction of the rod 11, thereby improving the stability of the suture needle between the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3. When the suture needle is subsequently driven to move for suturing operation, the stability of the suture needle is guaranteed to ensure the suturing effect. In addition, the medical staff only needs to press the handle 51 once to make the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3 release the suture needle, and the positioning ring 71 and the positioning protrusion 73 synchronously release the suture needle. After the medical staff releases the handle 51, when the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3 clamp the suture needle, the positioning ring 71 and the positioning protrusion 73 can synchronously position the suture needle, thereby improving the convenience of the medical staff in positioning or releasing the suture needle.

[0040] Reference Figure 2 , Figure 3The driving mechanism 6 is installed on the handle 1, and the driving mechanism 6 is used to drive the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3 to rotate in opposite directions. The driving mechanism 6 includes a driving motor 61, a driving button 62, a driving gear 63, a linkage gear 64 and a conversion assembly 65. The driving gear 63 is coaxially installed on one of the rollers 4, and the linkage gear 64 is coaxially installed on the other roller 4. The driving gear 63 and the linkage gear 64 are meshed. The widths of the driving gear 63 and the linkage gear 64 are the same. The sliding distance of the roller 4 on the upper clamp head 2 along the length direction of the upper clamp head 2 is less than the width of the driving gear 63 and the linkage gear 64. The degree of rotation of the lower jaw 3 is controlled by the medical staff, so that when the medical staff drives the roller 4 on the lower jaw 3 to move along the length direction of the lower jaw 3, the driving gear 63 or the linkage gear 64 can always remain in meshing. In this embodiment, the driving 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 portion 12. The conversion assembly 65 is used to drive the driving gear 63 and the driven gear to rotate synchronously when the output shaft of the driving 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 On the gripping portion 12, the distance between the rotation axis of the conversion seat 651 and the center of the driving 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 driving motor 61 is mounted on the conversion seat 651, and the driving button 62 is mounted on the gripping portion 12. The driving button 62 is electrically connected to the driving motor 61. The conversion gear 652 is coaxially mounted on the output shaft of the driving motor 61. The conversion gear 652 is used to mesh with the driving gear 63 or the driven gear when the conversion seat 651 rotates. The adjusting member 653 is mounted on the handle 1, and the adjusting member 653 is used to drive the conversion seat 651 to rotate. The joint component 653 includes a worm wheel 6531 and a worm 6532. The worm wheel 6531 is coaxially mounted on the rotating shaft of the conversion seat 651. The worm 6532 is rotatably mounted on the holding portion 12. The worm 6532 is meshed with the worm wheel 6531. In this embodiment, a control rod is rotatably mounted on the holding portion 12. The control rod extends to the worm 6532. A driving bevel gear is coaxially mounted on the control rod at the worm 6532. A driven bevel gear is coaxially mounted on the worm 6532. When the medical staff rotates the control rod, the control rod drives the driving bevel gear to rotate, and the driving bevel gear drives the driven bevel gear to rotate, thereby driving the worm 6532 to rotate.

[0041] After the medical staff clamps and positions the suture needle through the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3, they first twist the worm 6532, the worm 6532 drives the worm wheel 6531 to rotate, the worm wheel 6531 drives the conversion seat 651 to rotate in the direction close to the driving gear 63 or the linkage gear 64, so that the connecting gear is meshed with the driving gear 63 or the linkage gear 64, and then press the driving button 62 to start the driving motor 61, the output shaft of the driving motor 61 drives the linkage gear 64 to rotate, the linkage gear 64 drives the driving gear 63 or the linkage gear 64 to rotate, and through the meshing of the driving gear 63 and the linkage gear 64, the driving gear 63 and the linkage gear 64 are driven to rotate in opposite directions, the driving gear 63 and the linkage gear 64 drive the roller 4 on the upper clamp head 2 and the roller 4 on the lower clamp head 3 to rotate in opposite directions, and during the rotation process, the two rollers 4 synchronously drive the suture needle through friction The suturing operation can be performed by moving the suturing needle, which improves the stability of the movement of the suturing needle during the suturing process. The medical staff drives the conversion seat 651 to drive the conversion gear 652 to rotate and shift by twisting the worm 6532. Because the distance between the rotation axis of the conversion seat 651 and the center of the circle of the driving gear 63 is the same as the distance between the axis of the conversion seat 651 and the center of the circle of the linkage gear 64, the conversion gear 652 can be meshed with the driving gear 63 and the linkage gear 64. When the conversion gear 652 rotates subsequently, the conversion gear 652 drives the driving gear 63 to rotate or drives the linkage gear 64 to rotate, so that the driving gear 63 and the linkage gear 64 can rotate in different directions, thereby causing the roller 4 to rotate in different directions, so that the direction of the force applied by the roller 4 to the suturing needle is reversed, and then the moving direction of the suturing needle is adjusted, thereby improving the applicability and flexibility of driving the suturing needle to move for suturing operations for different suturing direction requirements.

[0042] The implementation principle of the needle holding forceps of the present application embodiment is as follows: the medical staff holds the gripping portion 12, drives the rod portion 11 to drive the upper forceps head 2 and the lower forceps head 3 to move into the cavity, and then presses the handle 51 to make the upper forceps head 2 away from the lower forceps head 3, and makes the positioning protrusion 73 on the positioning sleeve 72 away from the adjacent positioning ring 71, and then moves the rod portion 11 so that the suture needle is located between the roller 4 on the upper forceps head 2 and the roller 4 on the lower forceps head 3, and releases the handle 51. At this time, the upper forceps head 2 is in the torsion spring 53. The upper clamp head 2 is rotated close to the lower clamp head 3 under the action of the control spring 741, and the roller 4 on the upper clamp head 2 clamps the suture needle on the roller 4 on the lower clamp head 3. At the same time, the control spring 741 drives the positioning sleeve 72 to drive the positioning protrusion 73 close 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 twists the worm 6532, so that the conversion gear 652 is engaged with the driving gear 63 or the linkage gear 64, and then presses the driving button 62, the driving motor 61 drives the conversion gear 652 to rotate, and the conversion gear 652 can drive the driving gear 63 or the linkage gear 64 to rotate, thereby causing the two rollers 4 to rotate in opposite directions, and the rollers 4 apply force to the suture needle to move the suture needle for suturing operation. During the process, the medical staff can also change the moving direction of the suture needle, 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 fluency, accuracy and flexibility of the suturing operation of the medical staff. In addition, the medical staff can operate the handle 51, the worm 6532, the drive button 62 and the adjusting screw 81 on the gripping part 12, thereby improving the convenience of the medical staff's operation, thereby improving the efficiency of the suturing operation, reducing the medical staff's long-term and highly concentrated twisting of the wrist or pulling the needle holder for fine operations, and effectively improving the problem of inconvenience and fatigue of the medical staff when suturing with the needle holder.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A needle holding forceps, characterized in that: The invention comprises a handle (1), an upper clamp head (2), a lower clamp head (3), a roller (4), a closing mechanism (5) and a driving mechanism (6), wherein the upper clamp head (2) is hingedly arranged on the handle (1), the lower clamp head (3) is arranged on the handle (1), one of the rollers (4) is rotatably arranged on a side where the upper clamp head (2) and the lower clamp head (3) are close to each other, the closing mechanism (5) is arranged on the handle (1) and is used to drive the upper clamp head (2) to rotate in a direction close to the lower clamp head (3), and the driving mechanism (6) is arranged on the handle (1) and is used to drive the rollers (4) on the upper clamp head (2) and the lower clamp head (3) to rotate in opposite directions.

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

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

4. The needle holding forceps according to claim 3, characterized in that: The adjusting member (653) comprises a worm wheel (6531) and a worm (6532); the worm wheel (6531) is coaxially arranged on the rotating shaft of the conversion seat (651); the worm (6532) is rotatably arranged on the handle (1); and the worm (6532) is meshed with the worm wheel (6531).

5. The needle holding forceps according to claim 4, characterized in that: The closing mechanism (5) comprises a handle (51), a traction rope (52) and a torsion spring (53); the handle (51) is hingedly arranged on the handle (1); the traction rope (52) is arranged on the handle (51) and is connected to a side of the upper clamp head (2) facing away from the lower clamp head (3); and the torsion spring (53) is coaxially arranged on the hinge shaft of the upper clamp head (2) and is used to drive the upper clamp head (2) to rotate in a direction close to the lower clamp head (3).

6. The needle holding forceps according to claim 5, characterized in that: The lower clamp head (3) is provided with a positioning mechanism (7) for positioning the needle between the lower clamp head (3) and the upper clamp head (2); the positioning mechanism (7) comprises a positioning ring (71), a positioning sleeve (72), a positioning protrusion (73) and a control assembly (74); a plurality of positioning rings (71) are arranged on the roller (4) on the lower clamp head (3) at intervals along the length direction of the lower clamp head (3); the positioning sleeve (72) is arranged on the lower clamp head (3) in a sliding manner along the length direction of the lower clamp head (3); a plurality of positioning protrusions (73) are arranged on the positioning sleeve (72) in a sliding direction of the positioning sleeve (72); and the control assembly (74) is arranged on the lower clamp head (3) and is used to drive the positioning sleeve (72) to slide on the lower clamp head (3).

7. The needle holding forceps according to claim 6, characterized in that: The control assembly (74) comprises a control spring (741) and a control rope (742); the control spring (741) is arranged on the lower clamp head (3) and is used to drive the positioning sleeve (72) to drive the positioning protrusion (73) to move in a direction close to the positioning ring (71); and the control rope (742) is arranged on the positioning sleeve (72) and connected to the handle (51).

8. The needle holding forceps according to claim 5, characterized in that: The handle (1) comprises a rod portion (11) and a grip portion (12); the rod portion (11) is arranged on the grip portion (12); the handle (51), the worm (6532) and the drive button (62) are all located on the grip portion (12); and the upper pliers head (2) and the lower pliers head (3) are located on the rod portion (11).

9. The needle holding forceps according to claim 2, characterized in that: The roller (4) on the lower clamp head (3) is slidably arranged on the lower clamp head (3) along the length direction of the lower clamp head (3); the slidable distance of the roller (4) on the lower clamp head (3) is smaller than the width of the driving gear (63); and the lower clamp head (3) is provided with an adjustment component (8) for driving the roller (4) on the lower clamp head (3) to slide.

10. The needle holding forceps according to claim 9, characterized in that: The adjustment assembly (8) comprises an adjustment screw (81), a slide rod (82) and a push rod (83); the adjustment screw (81) is rotatably mounted on the gripping portion (12) and extends to the rod portion (11); the slide rod (82) is slidably mounted on the rod portion (11) and is threadedly connected to the adjustment screw (81); and the push rod (83) is rotatably mounted on the slide rod (82) and is connected to the roller (4) on the lower clamp head (3).

Images