Endoscopic purse string forceps

Abstract

This invention relates to the field of surgical medical device technology, specifically to a laparoscopic purse-string forceps, comprising a clamp, a handle, and a shaft. The clamp includes an upper clamp and a lower clamp, and the handle includes an upper handle and a lower handle. Both the upper and lower handles have movable cavities. A first rotating shaft and a second rotating shaft are fixedly connected to the top and bottom of the upper and lower clamps, respectively. The first and second rotating shafts pass through the bottom walls of the upper and lower handles, respectively, and both are hinged to pistons located within the movable cavities. The sides of the movable cavities away from the first and second rotating shafts are connected to tracheas. A first connecting rod and a second connecting rod are hinged to the sides of the upper and lower handles away from the movable cavities, with the first and second connecting rods hinged together. The shaft contains a pull rod connected to a handle assembly and a corresponding drive assembly. This invention designs a purse-string forceps that can be used in conjunction with a laparoscopy to assist in purse-string suturing within the abdominal cavity.

Description

Technical Field

[0001] This invention relates to the field of surgical medical device technology, specifically to a laparoscopic purse-string forceps. Background Technology

[0002] In laparoscopic surgery, such as gastrointestinal surgery, a cutting and closing device is often used to sever the distal intestinal segment from the tumor. A small incision is then made in the abdomen to remove the tumor and the proximal intestinal segment. A purse-string suture is then performed, clamping the proximal intestinal segment with upper and lower forceps. Commonly available purse-string forceps, such as the HUATRAU purse-string suture clamp, are surgical instruments consisting of a handle, forceps body, forceps head, and purse-string suture. They are primarily used for purse-string sutures of lumbar tissues such as the digestive tract, blood vessels, and intestines. Taking gastrointestinal surgery as an example, the surgeon holds the handle, clamps the intestinal segment to be sutured with the jaws, and then uses a purse-string suture needle to pass through the surface of the intestinal segment or blood vessel to complete a circular suture. After the purse-string suture is completed, it is tightened and knotted, or used in conjunction with a stapler.

[0003] However, external suturing of the abdominal incision increases intraoperative risks, requiring a smaller incision in the abdomen. This not only prolongs the patient's postoperative recovery time but may also leave a scar at the incision site after recovery, affecting the aesthetics of the abdomen. However, due to the large volume of conventional purse-string forceps and the 90-degree angle between the forceps head and body, purse-string forceps cannot be directly inserted into the abdominal cavity for use with a laparoscope.

[0004] Therefore, the present invention provides a laparoscopic purse-string forceps to solve the above-mentioned problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a laparoscopic purse-string forceps that can be inserted into the abdominal cavity and used in conjunction with a laparoscopy to assist medical personnel in performing purse-string sutures.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a laparoscopic purse-string forceps, comprising a clamp, a handle, and a lever. The clamp includes an upper clamp and a lower clamp, and the handle includes an upper handle and a lower handle. Both the upper handle and the lower handle are provided with movable cavities. The top of the upper clamp and the bottom of the lower clamp are respectively fixedly connected to a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft pass through the bottom wall of the upper handle and the lower handle and extend into the corresponding movable cavities. Both the first rotating shaft and the second rotating shaft are hinged with pistons, and the pistons are located in the movable cavities. The side of the movable cavity away from the first rotating shaft and the second rotating shaft is connected to a trachea. The upper and lower jaws intersect and are hinged together by a pivot pin. The upper and lower jaws are respectively hinged to a first connecting rod and a second connecting rod on the side away from the movable cavity. The ends of the first and second connecting rods away from the upper and lower jaws are hinged together. The jaw bar is a hollow tube. A pull rod is provided inside the jaw bar. One end of the pull rod is hinged to the hinge of the first and second connecting rods. The other end of the pull rod is provided with a handle assembly. The handle assembly contains a drive component that controls the lateral movement of the pull rod.

[0007] The technical principle of the above solution is as follows: the handle assembly and the drive assembly drive the pull rod inside the clamp bar to move. The pull rod drives the first link and the second link to move together, so that the upper clamp handle and the lower clamp handle open and close around the pivot pin, so that the upper clamp and the lower clamp handle can perform a clamping action together. At the same time, the air pressure change inside the upper clamp handle and the lower clamp handle controls the piston movement. The piston inside the upper clamp handle and the lower clamp handle then push the first rotating shaft and the second rotating shaft to rotate respectively, so that the upper clamp and the lower clamp can rotate.

[0008] The above approach has the following beneficial effects: 1. In this method, the forceps head and the forceps handle are parallel, allowing the purse-string forceps to enter the abdominal cavity for purse-string sutures.

[0009] 2. In this design, both the first and second rotating shafts are hinged with pistons. The rotation angle of the rotating shafts is controlled by the movement of the pistons, which can achieve multiple adjustments of the upper and lower clamps of the purse-string clamps to achieve the purpose of actual cooperation in purse-string suturing during surgery.

[0010] 3. In this solution, the handle assembly controls the opening and closing of the upper and lower clamps of the purse pliers, the air tube connects to the gas to control the direction of rotation of the upper and lower clamps, and the rotation angle of the upper and lower clamps is further controlled by controlling the amount of gas introduced.

[0011] Furthermore, the handle assembly includes a first handle and a second handle, with the bottom end of the lever passing through the second handle, the first handle hinged to the front side of the second handle, and a return spring provided on the opposite surfaces of the first handle and the second handle.

[0012] Beneficial effects: The return spring can assist the first and second handles in resetting, thereby controlling the lever to reset, making it convenient for one-handed operation.

[0013] Furthermore, the second handle has a drive cavity inside for installing drive components.

[0014] Beneficial effect: The drive cavity can provide installation space for drive components.

[0015] Furthermore, the drive assembly includes a first gear, which is fixedly connected to the first handle. A second gear that meshes with the first gear is disposed above the first gear. The second gear is rotatably connected to the inner wall of the drive cavity. A rack that meshes with the second gear is fixedly connected to one end of the pull rod.

[0016] Beneficial effect: The rotation of the first handle is converted into the rotation of the first gear, which in turn drives the second gear and rack to move, thereby enabling the pull rod to move laterally.

[0017] Furthermore, the surface of the first handle is provided with anti-slip grooves.

[0018] Beneficial effects: Increases friction when gripping, preventing slippage.

[0019] Furthermore, a protective housing is provided on the clamp bar, and both the first and second connecting rods are located inside the protective housing.

[0020] Beneficial effects: It can protect the hinge structure between the upper and lower clamp handles and the first and second connecting rods, preventing blood, tissue, etc. from entering during the operation and affecting the movement of the first and second connecting rods.

[0021] Furthermore, an air inlet is provided on the clamp bar, and the end of the air pipe away from the active cavity penetrates the side wall of the protective shell and extends into the clamp bar, communicating with the air inlet.

[0022] Beneficial effect: The air inlet is used to input external air pressure, thereby driving the piston movement due to the air pressure difference.

[0023] Furthermore, several locking beads are evenly arranged inside the active cavity, and the spacing between adjacent locking beads is the same as the width of the piston.

[0024] Beneficial effects: The locking beads can be used to adjust the distance of the piston movement, and the distance between the locking beads corresponds to the rotation angle of the first and second rotating shafts per unit inflation volume.

[0025] Furthermore, the bottom of the upper clamp is provided with a slot, and the top of the lower clamp is provided with a buckle corresponding to the slot.

[0026] Beneficial effects: The latch can fix the upper and lower parts of the upper and lower jaws relative to each other when they are closed. When the first and second rotating shafts rotate, the latch can help the upper and lower parts of the upper and lower jaws rotate synchronously.

[0027] Furthermore, the upper and lower clamps are evenly fixedly connected with a number of clamp teeth, and each clamp tooth has a wire-passing hole.

[0028] Beneficial effects: The clamping teeth are used to clamp the tissue, and the threading holes are used to assist in passing the purse-string suture through. Attached Figure Description

[0029] Figure 1 This is a diagram of the main body of the laparoscopic purse-string forceps of the present invention; Figure 2 This is a cross-sectional view of the laparoscopic purse-string forceps of the present invention; Figure 3 This is an isometric view of the upper and lower clamping parts of the laparoscopic purse-string forceps of the present invention; Figure 4 This is a cross-sectional view of the upper and lower clamping parts of the laparoscopic purse-string forceps of the present invention when they are open. Figure 5 for Figure 2 Enlarged view of section A; Figure 6 for Figure 2 Enlarged view of section B in the middle.

[0030] The reference numerals in the accompanying drawings include: 111, upper clamp; 222, lower clamp; 101, first connecting rod; 102, second connecting rod; 201, upper handle; 202, lower handle; 3, clamp bar; 4, movable cavity; 501, first rotating shaft; 502, second rotating shaft; 6, piston; 7, pin; 8, air pipe; 9, pull rod; 901, first handle; 902, second handle; 10, return spring; 11, drive cavity; 12, first gear; 13, second gear; 14, rack; 15, groove; 16, protective shell; 17, air inlet; 18, locking bead; 19, buckle; 20, clamp teeth; 21, threading hole. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The following detailed description illustrates the specific implementation methods: Example 1:

[0035] As attached Figure 1 and Figure 2 As shown: A laparoscopic purse-string forceps includes clamps, handles, and bars 3. The clamps include an upper clamp 111 and a lower clamp 222. A plurality of clamp teeth 20 are evenly welded onto the upper clamp 111 and the lower clamp 222. Each clamp tooth 20 has a threading hole 21. The clamp teeth 20 provide a more secure grip, and the threading hole 21 facilitates the passage of the purse-string needle (in conjunction with...). Figure 3 (As shown).

[0036] The clamps include an upper clamp 201 and a lower clamp 202, each containing a movable cavity 4. A first rotating shaft 501 and a second rotating shaft 502 are welded to the top of the upper clamp 201 and the bottom of the lower clamp 202, respectively. The first rotating shaft 501 and the second rotating shaft 502 pass through the bottom walls of the upper clamp 201 and the lower clamp 202, respectively, and extend into the corresponding movable cavities 4. Figure 4 The first rotating shaft 501 and the second rotating shaft 502 are located in the movable cavity 4. Both are connected by a hinge assembly (the hinge assembly includes a ball joint and a hinge rod. The hinge rod is hinged to one end of the piston 6 near the first rotating shaft 501 and the second rotating shaft 502. The other end of the hinge rod is provided with a ball joint. The ball joint's spherical groove is fixed to the first rotating shaft 501 and the second rotating shaft 502). The piston 6 is located in the movable cavity 4. The movable cavity 4 is connected to an air pipe 8 on the side away from the first rotating shaft 501 and the second rotating shaft 502. An air inlet 17 is provided on the clamp 3. The air pipe 8 is connected to the air inlet 17 (an air pump or air bag can be configured to facilitate air supply to the air inlet 17).

[0037] The upper clamp handle 201 and the lower clamp handle 202 are hinged together by a pivot pin 7. A first connecting rod 101 and a second connecting rod 102 are respectively hinged to the sides of the upper and lower clamp handles 201 and 202 away from the movable cavity 4. The ends of the first connecting rod 101 and the second connecting rod 102 away from the upper and lower clamp handles 201 and 202 are hinged together. The clamp rod 3 is a hollow tube with a protective outer shell 16. The first connecting rod 101 and the second connecting rod 102 are both located inside the protective outer shell 16. The end of the air tube 8 away from the movable cavity 4 passes through the side wall of the protective outer shell 16 and extends into the clamp rod 3. The protective outer shell 16 protects the first connecting rod 101 and the second connecting rod 102, preventing them from being disturbed by external forces during movement. The clamp 3 has a pull rod 9 inside. One end of the pull rod 9 is hinged to the hinge joint of the first connecting rod 101 and the second connecting rod 102. The other end of the pull rod 9 has a handle assembly. The handle assembly has a drive component inside that controls the lateral movement of the pull rod 9.

[0038] The specific implementation process is as follows: After the upper clamp 111 and the lower clamp 222 enter the abdominal cavity parallel to the clamp handle, in order not to obstruct the surgical field of vision and to facilitate the medical staff to perform purse-string sutures, the upper clamp 111 and the lower clamp 222 need to be rotated to a direction suitable for the surgical operation. First, the angle is adjusted by filling the air inlet 17 with gas. The gas enters the movable chamber 4 through the air pipe 8. As the gas continues to enter, the gas in the movable chamber 4 pushes the piston 6 to move towards the first rotating shaft 501 and the second rotating shaft 502. At this time, the compression spring compresses and pushes the hinge rod to move axially towards the first rotating shaft 501 and the second rotating shaft 502, thereby causing the ball part of the ball joint to rotate, which in turn drives the spherical groove to rotate synchronously. Since the spherical groove is fixed to the first rotating shaft 501 and the second rotating shaft 502 respectively, the first rotating shaft 501 and the second rotating shaft 502 rotate synchronously. Since the upper clamp 111 and the lower clamp 222 are fixed to the first rotating shaft 501 and the second rotating shaft 502 respectively, when the first rotating shaft 501 and the second rotating shaft 502 rotate, the upper clamp 111 and the lower clamp 222 will rotate, realizing the angle adjustment of the upper clamp 111 and the lower clamp 222.

[0039] Then locate the intestinal segment requiring purse-string suture, grip the handle assembly, and under the drive of the drive assembly, the pull rod 9 inside the clamp bar 3 moves closer to the handle assembly, pulling the first connecting rod 101 and the second connecting rod 102 towards the center of the protective shell 16, thereby causing the upper clamp handle 201 and the lower clamp handle 202 to close, so that the upper clamp 111 and the lower clamp 222 clamp the intestinal segment (the purse-string suture is pre-placed in the suture groove, and the suture is completed when the upper clamp 111 and the lower clamp 222 close), and the purse-string suture is gathered in a loop along the intestinal tissue to complete the suture. Remove the air pump or air bag, at which point the gas in the movable chamber 4 overflows, and the pressure difference between the air in the movable chamber 4 and the outside air decreases, causing the compression spring to reset and driving the piston 6 to reset, so that the upper clamp 111 and the lower clamp 222 return to a parallel state with the clamp bar 3, making it easier to remove the purse-string forceps from the abdomen.

[0040] Example 2:

[0041] As attached Figure 1 and Figure 2 As shown, the difference from Embodiment 1 is that the handle assembly and drive assembly are the main components controlling the tightening and loosening of the upper clamp 111 and lower clamp 222. The handle assembly includes a first handle 901 and a second handle 902. One end of the pull rod 9 away from the upper clamp 111 and lower clamp 222 passes through the second handle 902. The first handle 901 is hinged to the second handle 902. A return spring 10 is provided on the side of the first handle 901 near the second handle 902. One end of the return spring 10 is welded to the first handle 901, and the other end of the return spring 10 is welded to the second handle 902. The surface of the first handle 901 is provided with anti-slip grooves 15.

[0042] The second handle 902 has a drive cavity 11 for installing a drive assembly. The drive assembly includes a first gear 12, which is welded to the first handle 901. A second gear 13 that meshes with the first gear 12 is provided above the first gear 12 (the bottom of the second gear 13 is rotatably connected to the drive cavity 11 via a rotating shaft). A rack 14 that meshes with the second gear 13 is welded to one end of the pull rod 9.

[0043] The specific implementation process is as follows: When the medical staff holds the first handle 901, the first handle 901 rotates counterclockwise relative to the second handle 902 around its hinge point with the second handle 902. The first handle 901 drives the first gear 12 to rotate counterclockwise, and the first gear 12 meshes with the second gear 13 above it, thereby driving the second gear 13 to rotate clockwise. The second gear 13 then meshes with the rack 14 on the pull rod 9, driving the pull rod 9 to move closer to the second handle 902. At this time, the first clamp 111 and the second clamp 222 are closed. After releasing the first handle 901, under the elastic force of the return spring 10, the first handle 901 rotates in the opposite direction to reset, and at the same time, the pull rod 9 is reset through the transmission of the first gear 12 and the second gear 13 with the rack 14.

[0044] Example 3:

[0045] As attached Figure 3 and Figure 4 As shown, the difference from Embodiment 2 is that, in order to achieve synchronous rotation of the upper clamp 111 and the lower clamp 222 and controllable adjustment angle, the bottom of the upper clamp 111 is provided with a slot, and the top of the lower clamp 222 is provided with a buckle 19 corresponding to the slot (e.g., ...). Figure 3 As shown), the upper clamp 111 and the lower clamp 222 move synchronously during rotation through the engagement of the buckle 19; The movable cavity 4 is evenly equipped with a number of locking beads 18 (the structure of the locking beads mainly includes flat-headed pins and springs, and is designed with reference to pin tumbler locks). The spacing between adjacent locking beads 18 is the same as the width of the piston 6. The locking beads 18 can effectively position the trajectory of the piston 6. The distance between the locking beads 18 and the number of locking beads 18 are related to the rotation angle of the first rotating shaft 501 and the second rotating shaft 502. For example, when the piston 6 is one locking bead 18 away from the starting point, the first rotating shaft 501 and the second rotating shaft 502 rotate 15 degrees relative to the initial position. The number of locking beads 18 and the distance between the locking beads 18 can be adjusted according to actual requirements.

[0046] The specific implementation process is as follows: When medical staff adjust the angle of the purse-string forceps, the gas in the movable chamber 4 pushes the piston 6 to move. The piston 6 passes through the locking bead 18. When the gas stops being injected, the piston 6 stops moving forward due to the resistance of the locking bead 18. At this time, the rotation direction of the upper clamp 111 and the lower clamp 222 is fixed. If it is necessary to further increase the rotation angle of the upper clamp 111 and the lower clamp 222, gas needs to be injected into the trachea to make the piston continue to move in the clamping direction. The locking bead 18 can make the rotation angle control of the upper clamp head 111 and the lower clamp head 222 more precise, which can be adapted to complex surgical environments.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A laparoscopic purse-string forceps, comprising a clamp, a handle, and a bar (3), characterized in that, The clamps include an upper clamp (111) and a lower clamp (222), and the handles include an upper handle (201) and a lower handle (202). Both the upper handle (201) and the lower handle (202) are provided with movable cavities (4). The top of the upper clamp (111) and the bottom of the lower clamp (222) are respectively fixedly connected to a first rotating shaft (501) and a second rotating shaft (502). The first rotating shaft (501) and the second rotating shaft (502) pass through the bottom wall of the upper handle (201) and the lower handle (202) and extend into the corresponding movable cavities (4). The first rotating shaft (501) and the second rotating shaft (502) are both hinged to pistons (6) on the side of the movable cavity (4). The pistons (6) are both located in the movable cavity (4). The side of the movable cavity (4) away from the first rotating shaft (501) and the second rotating shaft (502) is connected to an air tube (8). The upper clamp handle (201) and the lower clamp handle (202) are hinged together by a pivot pin (7). The ends of the upper clamp handle (201) and the lower clamp handle (202) away from the movable cavity (4) are respectively hinged to a first connecting rod (101) and a second connecting rod (102). The ends of the first connecting rod (101) and the second connecting rod (102) away from the upper clamp handle (101) and the lower clamp handle (102) are hinged to each other. The clamp rod (3) is a hollow tube. A pull rod (9) is provided inside the clamp rod (3). One end of the pull rod (9) is hinged to the hinge of the first connecting rod (101) and the second connecting rod (102). The other end of the pull rod (9) is provided with a handle assembly. The handle assembly is provided with a drive assembly for controlling the lateral movement of the pull rod (9).

2. The laparoscopic purse-string forceps according to claim 1, characterized in that... The handle assembly includes a first handle (901) and a second handle (902). The bottom end of the pull rod (9) passes through the second handle (902). The first handle (901) is hinged to the front side of the second handle (902). A return spring (10) is provided on the side of the first handle (901) near the second handle (902). One end of the return spring (10) is fixed to the first handle (901), and the other end of the return spring (10) is attached to the second handle (902).

3. The laparoscopic purse-string forceps according to claim 2, characterized in that... The second handle (902) has a drive cavity (11) inside for installing the drive assembly.

4. The laparoscopic purse-string forceps according to claim 3, characterized in that... The drive assembly includes a first gear (12), which is fixedly connected to the first handle (901). A second gear (13) meshes with the first gear (12) above the first gear (12). The second gear (13) is rotatably connected to the inner wall of the drive cavity (11). A rack (14) meshes with the second gear (13) at one end of the pull rod (9).

5. The laparoscopic purse-string forceps according to claim 4, characterized in that... The surface of the first handle (901) is provided with anti-slip grooves (15).

6. The laparoscopic purse-string forceps according to claim 5, characterized in that, A protective shell (16) is provided on the clamp bar (3), and the first connecting rod (101) and the second connecting rod (102) are both located inside the protective shell (16).

7. The laparoscopic purse-string forceps according to claim 6, characterized in that, An air inlet (17) is provided on the clamp (3). The end of the air pipe (8) away from the active cavity (4) passes through the side wall of the protective shell (16) and extends into the inside of the clamp (3) to communicate with the air inlet (17).

8. The laparoscopic purse-string forceps according to claim 7, characterized in that, The movable cavity (4) is evenly provided with several locking beads (18), and the distance between adjacent locking beads (18) is the same as the width of the piston (6).

9. The laparoscopic purse-string forceps according to claim 8, characterized in that, The bottom of the upper clamp (111) is provided with a slot, and the top of the lower clamp (222) is provided with a buckle (19) corresponding to the slot.

10. The laparoscopic purse-string forceps according to claim 9, characterized in that, The bottom of the upper clamp (101) and the top of the lower clamp (102) are fixedly connected with several evenly distributed clamp teeth (20), and each clamp tooth (20) has a wire hole (21).

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