Laparoscopic needle holder with thread feeding structure

Abstract

The application discloses a laparoscope needle holder with a thread feeding structure, which comprises a clamping rod, the head of the clamping rod is hinged with a clamping head, the clamping head comprises a shell, a first clamping plate, a second clamping plate, a transmission mechanism and a driving wheel, and a pair of driven rotating rods are installed on the second clamping plate. The transmission mechanism, the driven rotating rods and the driving wheel are arranged, so that after the suture needle is clamped, the second pull rope drives the driving wheel to rotate, the driving rotating rod is driven to rotate under the action of the transmission mechanism, and the suture needle is delivered, the suture needle does not need to be repeatedly pulled by the clamping head for suture work on the sutured surface, the knotting of the suture thread when the suture needle is continuously driven to move is prevented, the action of the clamping head in the patient's body is small, and the suture needle is prevented from scratching the tissue in the patient's body when the suture needle is clamped to move.

Description

Technical Field

[0001] This invention belongs to the technical field of laparoscopic needle holders, specifically a laparoscopic needle holder with a suture delivery structure. Background Technology

[0002] In laparoscopic surgery, suturing is required inside the body after the operation. After the suture needle punctures the wound, a laparoscopic needle holder is used to clamp the punctured suture needle and pull it outward, so that the suture needle drives the suture to tighten the wound surface. When suturing the wound surface, the needle holder is used to hold the suture and pull it continuously so that the wound surface can be closed by the suture. Because the suture used is usually long and the space inside the patient's body is relatively small, the suture is easy to tangle and curl when the laparoscopic needle holder pulls the suture, which will affect the next puncture and suturing. In addition, the needle holder can also easily scrape against the patient's internal tissues when holding the suture needle and moving it inside the patient's body, causing secondary injury to the patient.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a laparoscopic needle holder with a suture delivery structure to solve the above-mentioned problems of the prior art.

[0005] To achieve the above objectives, the present invention provides a laparoscopic needle holder with a thread feeding structure, including a clamping rod. The head of the clamping rod is hinged to a clamping head. The first end of the clamping rod is provided with a pair of protruding ends. An insert shaft is inserted and fixed between the two protruding ends. Rotary wheels are rotatably connected to the periphery of both ends of the insert shaft. The clamping head includes a housing, a first clamping plate disposed in the housing, a second clamping plate disposed in the housing, a transmission mechanism mounted on the first clamping plate, and a drive wheel. The end of the first clamping plate is provided with a first dial wheel, and the end of the second clamping plate is provided with a second dial wheel. A pair of driven rotating rods are mounted on the second clamping plate. The drive wheel is clamped between the first dial wheel and the second dial wheel. The first dial wheel, the second dial wheel, and the drive wheel are all rotatably connected to the housing.

[0006] In the technical solution of the present invention, the end of the outer shell is provided with a hinge, the hinge is sleeved on the outside of the insertion shaft and rotatably connected to the insertion shaft, and the tail of the hinge is sleeved with a first pull rope.

[0007] In the technical solution of the present invention, guide wheels are rotatably connected to both the left and right surfaces of the outer casing, and a third pull rope is sleeved on both the first and second pull wheels, with the end of the third pull rope passing through the guide wheel and the rotating wheel in sequence.

[0008] In the technical solution of the present invention, a pair of grooves are provided on the surface of the second clamping plate near the first clamping plate, the driven rotating rod is installed in the grooves and rotatably connected to the second clamping plate, the driven rotating rod protrudes on the second clamping plate, and a clearance groove is also provided on the surface of the second clamping plate at the end of the grooves.

[0009] In the technical solution of the present invention, the transmission mechanism includes a pair of active rotating rods mounted on the first clamping plate, a connecting gear connecting the two active rotating rods, and a second bevel gear connected to the connecting gear. The end of each active rotating rod is coaxially connected to a first spur gear. The connecting gear is located between the two first spur gears and meshes with the first spur gear. The end of the connecting gear is coaxially connected to a first bevel gear. A second bevel gear meshes with the first bevel gear. A second spur gear is coaxially connected to the left side of the second bevel gear.

[0010] In the technical solution of the present invention, a pair of mounting grooves are provided on the surface of the first clamping plate, the active rotating rod is sleeved in the active rotating rod and rotatably connected to the first clamping plate, and a first gear groove and a second gear groove are provided at the end of the mounting groove, the first spur gear and the connecting gear are sleeved in the first gear groove, and the first bevel gear, the second bevel gear and the second spur gear are sleeved in the second gear groove.

[0011] In the technical solution of the present invention, a second pull rope is sleeved on the drive wheel, and both ends of the second pull rope extend into the clamp rod. A toothed groove is formed on the outer edge surface of the drive wheel, and a second spur gear meshes with the toothed groove.

[0012] In the technical solution of the present invention, a pair of openings are provided on the insertion shaft, and the first and last ends of the second pull rope pass through the two openings respectively.

[0013] In the technical solution of the present invention, a pair of stop shafts are inserted into the clamping head, and the two stop shafts block the outside of the second pull rope.

[0014] In the technical solution of the present invention, movable grooves are provided on both the left and right surfaces of the hinge table, and the second pull rope passes through the movable grooves.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] In this invention, a transmission mechanism is provided on the first clamping plate, a driven rotating rod is provided on the second clamping plate, and a driving wheel is provided in the clamping head. After the first and second clamping plates clamp the suture needle, the driving wheel is controlled to rotate by driving the second pull rope. Under the action of the transmission mechanism, the driving rotating rod is rotated, so that the clamped suture needle is delivered as the driving rotating rod rotates. There is no need for the clamping head to repeatedly pull the suture needle to suture the wound surface, which prevents the suture from getting knotted when the suture needle is constantly being driven. At the same time, the movement of the clamping head in the patient's body is small, which can prevent the suture needle from scratching the patient's internal tissues when it is clamped and moved. Attached Figure Description

[0017] Figure 1 This is a simplified schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a structural diagram of the clamping rod in this invention;

[0019] Figure 3 This is a structural diagram of the clamping head in this invention;

[0020] Figure 4 This is a front view of the clamping head in this invention;

[0021] Figure 5 This is a structural diagram of the outer shell in this invention;

[0022] Figure 6 This is a structural diagram of the first clamping plate in this invention;

[0023] Figure 7 This is an enlarged schematic diagram of point A in this invention;

[0024] Figure 8 This is an exploded view of the second clamping plate in this invention;

[0025] Figure 9 This is a structural diagram of the transmission mechanism in this invention;

[0026] Figure 10 This is a schematic diagram showing the state of the second pull rope when it is restricted by the stop shaft in this invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Clamping rod; 11-Protruding end; 12-Insertion shaft; 121-Through opening; 13-Rotating wheel; 2-Clamping head; 21-Outer shell; 211-Hinge; 212-First pull rope; 213-Guide wheel; 214-Stop shaft; 215-Modular groove; 22-First clamping plate; 221-First dial wheel; 222-Mounting groove; 223-First gear groove; 224-Second gear groove; 23-Second clamping plate; 231-Second dial wheel; 232-Groove; 233-Driven rotating rod; 234-Clearing groove; 24-Transmission mechanism; 241-Driving rotating rod; 2411-First spur gear; 242-Connecting gear; 2421-First bevel gear; 243-Second bevel gear; 2431-Second spur gear; 25-Driving wheel; 251-Second pull rope; 252-Gear groove; 26-Third pull rope. Detailed Implementation

[0029] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0030] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0031] Reference Figures 1-10 The laparoscopic needle holder with a wire feeding structure of the present invention includes a clamping rod 1, the head of which is hinged to a clamping head 2. The clamping head 2 includes a housing 21, a first clamping plate 22 disposed in the housing 21, a second clamping plate 23 disposed in the housing 21, a transmission mechanism 24 mounted on the first clamping plate 22, and a drive wheel 25.

[0032] In this invention, the first end of the clamping rod 1 is provided with a pair of protruding ends 11, and a shaft 12 is inserted and fixed between the two protruding ends 11. A rotating wheel 13 is rotatably connected to the outer periphery of both ends of the shaft 12. The end of the outer shell 21 is provided with a hinge 211. The hinge 211 is sleeved on the outside of the shaft 12 and rotatably connected to the shaft 12. A first pull rope 212 is sleeved on the tail of the hinge 211. By controlling the first pull rope 212 at the far end of the clamping rod 1 to pull the hinge 211, the hinge 211 can be rotated around the shaft 12, thereby driving the clamping head 2 to move at the end of the clamping rod 1 to adjust the direction of the clamping head 2.

[0033] Specifically, the first clamping plate 22 is provided with a first dial wheel 221 at its end, and the second clamping plate 23 is provided with a second dial wheel 231 at its end. Both the first dial wheel 221 and the second dial wheel 231 are rotatably connected to the outer shell 21. Guide wheels 213 are rotatably connected to the left and right surfaces of the outer shell 21. A third pull rope 26 is sleeved on both the first dial wheel 221 and the second dial wheel 231. The end of the third pull rope 26 passes through the guide wheel 213 and the rotating wheel 13 in sequence and then extends into the clamping rod 1. When the third pull rope 26 is pulled at the far end of the clamping rod 1, the two third pull ropes 26 can drive the first dial wheel 221 and the second dial wheel 231 to rotate in the outer shell 21, thereby achieving the purpose of driving the first clamping plate 22 and the second clamping plate 23 to move relative to each other, so as to clamp or release the suture needle.

[0034] Furthermore, a pair of driven rotating rods 233 are installed on the second clamping plate 23. A pair of grooves 232 are formed on the surface of the second clamping plate 23 near the first clamping plate 22. The driven rotating rods 233 are installed in the grooves 232 and are rotatably connected to the second clamping plate 23. The driven rotating rods 233 protrude from the second clamping plate 23. A clearance groove 234 is also formed on the surface of the second clamping plate 23 at the end of the grooves 232.

[0035] In addition, the drive wheel 25 is clamped between the first gear wheel 221 and the second gear wheel 231. The drive wheel 25 is rotatably connected to the outer casing 21. A second pull rope 251 is sleeved on the drive wheel 25. Both ends of the second pull rope 251 extend into the clamping rod 1. By pulling the second pull rope 251 at the far end of the clamping rod 1, the second pull rope 251 can drive the drive wheel 25 to rotate inside the outer casing 21.

[0036] In the above scheme, the transmission mechanism 24 includes a pair of active rotating rods 241 mounted on the first clamping plate 22, a connecting gear 242 connecting the two active rotating rods 241, and a second bevel gear 243 connected to the connecting gear 242. The end of the active rotating rod 241 is coaxially connected to a first spur gear 2411. The connecting gear 242 is located between the two first spur gears 2411 and meshes with the first spur gear 2411. The end of the connecting gear 242 is coaxially connected to a first bevel gear 2421. The second bevel gear 243 meshes with the first bevel gear 2421. The second spur gear 2431 is coaxially connected to the left side of the second bevel gear 243.

[0037] Specifically, a pair of mounting grooves 222 are formed on the surface of the first clamping plate 22. The active rotating rod 241 is sleeved in the active rotating rod 241 and rotatably connected to the first clamping plate 22. A first gear groove 223 and a second gear groove 224 are provided at the end of the mounting grooves 222. A first spur gear 2411 and a connecting gear 242 are sleeved in the first gear groove 223. A first bevel gear 2421, a second bevel gear 243, and a second spur gear 2431 are sleeved in the second gear groove 224. A mounting groove 2431 is formed on the outer edge surface of the driving wheel 25. The gear has a toothed groove 252, and the second spur gear 2431 meshes with the toothed groove 252. When the driving wheel 25 rotates under the action of the second pull rope 251, the driving wheel 25 will drive the second spur gear 2431 to rotate under the action of the toothed groove 252, thereby causing the second bevel gear 243 to drive the first bevel gear 2421 to rotate. When the first bevel gear 2421 is rotating, the first bevel gear 2421 will drive the two first spur gears 2411 to rotate synchronously through the connecting gear 242, which will eventually cause the two driving rotating rods 241 to rotate synchronously. The active rotating rod 241 protrudes from the first clamping plate 22. The position of the active rotating rod 241 corresponds to the position of the driven rotating rod 233, so that after the first clamping plate 22 and the second clamping plate 23 clamp the suture needle, the suture needle can be clamped between the active rotating rod 241 and the driven rotating rod 233. When the rotation of the active wheel 25 finally drives the active rotating rod 241 to rotate, the clamped suture needle can be driven to move under the rotation of the active rotating rod 241, thereby automatically pulling out the suture needle. After the suture needle is pulled out, the suture will continue to be delivered between the active rotating rod 241 and the driven rotating rod 233, so that the clamping head 2 can perform suture delivery with a small amount of movement, preventing the suture from tangling and knotting, and preventing the moving suture needle from scratching the patient's internal tissues.

[0038] Furthermore, a pair of through-holes 121 are provided on the insert shaft 12, and movable grooves 215 are provided on both the left and right sides of the hinge platform 211. The second pull rope 251 passes through the movable groove 215 and then passes through the through-hole 121 and extends into the clamping rod 1, so that the movement of the clamping head 2 will not affect the second pull rope 251, so that the second pull rope 251 can smoothly drive the drive wheel 25 to rotate.

[0039] In addition, a pair of stop shafts 214 are inserted into the clamping head 2. The two stop shafts 214 block the outside of the second pull rope 251, so that the second pull rope 251 can be restricted between the two stop shafts 214 after passing through the drive wheel 25, preventing the second pull rope 251 from rubbing against other parts inside the clamping head 2.

[0040] The working principle of the laparoscopic needle holder with a suture delivery structure of the present invention is as follows:

[0041] First, when the third pull rope 26 drives the first dial wheel 221 and the second dial wheel 231 to rotate, and the first clamping plate 22 and the second clamping plate 23 clamp the suture needle, the suture needle is clamped between the driving rotating rod 241 and the driven rotating rod 233. Then, pulling the second pull rope 251 at the far end of the clamping rod 1 will cause the second pull rope 251 to drive the driving wheel 25 to rotate inside the outer casing 21. Finally, as the driving wheel 25 rotates, the driving wheel 25 will drive the second spur gear 2431 to rotate under the action of the tooth groove 252, thereby causing the second spur gear 2431 to rotate. 31 drives the first bevel gear 2421 and the connecting gear 242 to rotate through the second bevel gear 243. At this time, under the meshing of the gears, the two first straight gears 2411 synchronously drive the two active rotating rods 241 to rotate, so that the clamped suture needle can be driven to move under the rotation of the active rotating rod 241, thereby automatically pulling out the suture needle. After the suture needle is pulled out, the suture thread will continue to be delivered between the active rotating rod 241 and the driven rotating rod 233, so that the clamping head 2 can perform the suture thread delivery work with a small amount of movement.

[0042] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A laparoscopic needle holder with a suture feeding structure, comprising a clamping rod (1), wherein a clamping head (2) is hinged to the head of the clamping rod (1), characterized in that: The clamping rod (1) has a pair of protruding ends (11) at its head end. A shaft (12) is inserted and fixed between the two protruding ends (11). A rotating wheel (13) is rotatably connected to both ends of the shaft (12). The clamping head (2) includes a housing (21), a first clamping plate (22) disposed in the housing (21), a second clamping plate (23) disposed in the housing (21), a transmission mechanism (24) mounted on the first clamping plate (22), and a drive wheel (23). 5) The first clamping plate (22) is provided with a first dial wheel (221) at its end, and the second clamping plate (23) is provided with a second dial wheel (231) at its end. A pair of driven rotating rods (233) are installed on the second clamping plate (23). The driving wheel (25) is clamped between the first dial wheel (221) and the second dial wheel (231). The first dial wheel (221), the second dial wheel (231) and the driving wheel (25) are all rotatably connected to the outer shell (21).

2. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: The end of the outer shell (21) is provided with a hinge (211), which is sleeved on the outside of the insert shaft (12) and rotatably connected to the insert shaft (12). The tail of the hinge (211) is provided with a first pull rope (212).

3. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: Guide wheels (213) are rotatably connected to the left and right surfaces of the outer casing (21). A third pull rope (26) is sleeved on the first dial wheel (221) and the second dial wheel (231). The end of the third pull rope (26) passes through the guide wheel (213) and the rotating wheel (13) in sequence.

4. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: A pair of grooves (232) are provided on the surface of the second clamping plate (23) near the first clamping plate (22). The driven rotating rod (233) is installed in the groove (232) and rotatably connected to the second clamping plate (23). The driven rotating rod (233) protrudes on the second clamping plate (23). A clearance groove (234) is also provided on the surface of the second clamping plate (23) at the end of the groove (232).

5. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: The transmission mechanism (24) includes a pair of active rotating rods (241) mounted on the first clamping plate (22), a connecting gear (242) connecting the two active rotating rods (241), and a second bevel gear (243) connected to the connecting gear (242). The end of the active rotating rod (241) is coaxially connected to a first spur gear (2411). The connecting gear (242) is located between the two first spur gears (2411) and meshes with the first spur gears (2411). The end of the connecting gear (242) is coaxially connected to a first bevel gear (2421). The first bevel gear (2421) meshes with a second bevel gear (243). The second bevel gear (243) is coaxially connected to a second spur gear (2431) at the left side of the second bevel gear (243).

6. The laparoscopic needle holder with a suture delivery structure as described in claim 5, characterized in that: A pair of mounting grooves (222) are provided on the surface of the first clamping plate (22). The active rotating rod (241) is sleeved in the active rotating rod (241) and rotatably connected to the first clamping plate (22). A first gear groove (223) and a second gear groove (224) are provided at the end of the mounting groove (222). The first spur gear (2411) and the connecting gear (242) are sleeved in the first gear groove (223). The first bevel gear (2421), the second bevel gear (243) and the second spur gear (2431) are sleeved in the second gear groove (224).

7. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: A second pull rope (251) is sleeved on the drive wheel (25), and both ends of the second pull rope (251) extend into the clamp rod (1). A tooth groove (252) is opened on the outer edge surface of the drive wheel (25), and the second spur gear (2431) meshes with the tooth groove (252).

8. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: The insert shaft (12) has a pair of openings (121), and the first and last ends of the second pull rope (251) pass through the two openings (121) respectively.

9. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: A pair of stop shafts (214) are inserted into the clamping head (2), and the two stop shafts (214) block the outside of the second pull rope (251).

10. The laparoscopic needle holder with a suture delivery structure as described in claim 1, characterized in that: The hinge platform (211) has movable grooves (215) on both its left and right sides, and the second pull rope (251) passes through the movable grooves (215).

Images