Automatic purse-string suture forceps for endoscope

Abstract

The utility model discloses a pair of automatic purse-string suture forceps for an endoscope. The pair of automatic purse-string suture forceps comprises a holding device, a transmission mechanism and a suture device, the transmission mechanism is mounted between the holding device and the suturing device; the holding device is used for controlling the transmission mechanism to operate; the transmission mechanism is used for driving the suturing device to clamp the digestive tract tissue and driving the suturing device to perform purse-string suturing on the digestive tract tissue. According to the purse-string forceps, purse-string needles and threads do not need to penetrate through the jaw of the purse-string forceps manually under an endoscope, the operation difficulty and the operation risk can be reduced, and the operation time can be shortened.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an automatic purse-string suture forceps for laparoscope. Background Art

[0002] At present, laparoscopic surgery has been widely carried out. In the field of gastrointestinal surgery, digestive tract anastomosis reconstruction through laparoscopy is a hot topic and focus of research in related fields. In traditional laparotomy, in order to complete the digestive tract anastomosis, a purse-string clamp is used to suture the purse-string at one end of the lumen, a purse-string line is introduced through a purse-string needle, and then a circular stapler is placed to complete the subsequent anastomosis operation. In laparoscopic surgery, the corresponding long-bar surgical instruments often need to be inserted into the abdominal cavity through the Trocar (Trocar for Laparoscopy, laparoscopic trocar) operation hole reserved in the abdomen or an auxiliary small incision, inserted to the required depth during the operation, and the surgical operation is performed through the lever principle. In order to achieve the above operation under laparoscopy, there is now a laparoscopic purse-string clamp that completes the purse-string suturing in the body through an auxiliary small incision in the abdomen, but the placement and removal of the purse-string needle under laparoscopy are difficult and time-consuming, and the surrounding tissues are easily damaged during the operation, which requires a certain amount of practice curve. Utility Model Content

[0003] The utility model aims to provide an automatic purse-string suture forceps for laparoscope, which does not need to manually pass the purse-string needle and thread through the jaws of the purse-string forceps under laparoscope, can reduce the difficulty and risk of surgery, and can also shorten the operation time.

[0004] In order to solve the above technical problems, the utility model provides an automatic purse-string suturing forceps for laparoscope, comprising: a holding device, a transmission mechanism and a suturing device;

[0005] The transmission mechanism is installed between the holding device and the suturing device;

[0006] The holding device is used to control the operation of the transmission mechanism;

[0007] The transmission mechanism is used to drive the suturing device to clamp the digestive tract tissue, and to drive the suturing device to perform purse-string suturing on the digestive tract tissue.

[0008] Further, the holding device comprises: a first handle and a second handle;

[0009] One end of the first handle and one end of the second handle maintain a predetermined distance; the other end of the first handle and the other end of the second handle are both connected to the transmission mechanism; the first handle and the second handle are rotatably connected, and the other end of the second handle can move in a direction parallel to the transmission mechanism and drive the transmission mechanism to operate.

[0010] Furthermore, the holding device also includes a safety device; a slot is provided on the second handle; one end of the safety device is rotatably mounted on the first handle, and the other end is located in the slot.

[0011] Further, the transmission mechanism includes: a connecting shell, a transmission rod, a first connecting rod, a second connecting rod, a first driving rod and a second driving rod;

[0012] The connecting shell is connected to the first handle;

[0013] One end of the transmission rod is connected to the second handle, and the other end extends into the connecting shell; the transmission rod is slidably connected to the inner wall of the connecting shell;

[0014] The first connecting rod and the second connecting rod are both located in the connecting shell; one end of the first connecting rod is rotatably connected to one end of the second connecting rod and rotatably mounted on the transmission rod; the other end of the first connecting rod and the other end of the second connecting rod maintain a specified distance;

[0015] The first driving rod and the second driving rod are rotatably connected and are located in the connecting shell; one end of the first driving rod and one end of the second driving rod are rotatably connected to the other end of the first connecting rod and the other end of the second connecting rod respectively; the other end of the first driving rod and the other end of the second driving rod retain a specified interval, and both extend outside the connecting shell to be connected to the suturing device.

[0016] Furthermore, the suturing device comprises: two sets of symmetrically arranged clamps, two sets of nail pushing devices, a plurality of purse string nails and a purse string;

[0017] The chuck is connected to the transmission mechanism; the nail pushing device is slidably mounted on the chuck and is arranged on a side of the chuck close to the digestive tract tissue, and the purse string is mounted on the nail pushing device; the purse string passes through the nail pushing device and the purse string; when one side of the chuck is close to the digestive tract tissue, the nail pushing device pushes the purse string to extend out of the chuck and nail into the digestive tract tissue, and the purse string can be fixed at the stapled part of the digestive tract tissue.

[0018] Further, the nail pushing device comprises: a nail pushing plate and a pushing block;

[0019] A nail plate groove is provided on one side of the chuck; the pushing block is installed in the nail plate groove; the nail pushing plate is slidably installed in the nail plate groove; the purse string is installed in the nail pushing plate; the nail pushing plate is provided with a through hole, and the pushing block can pass through the through hole and push out the purse string; the purse string passes through the nail pushing plate and the purse string; when one side of the chuck is close to the digestive tract tissue, the nail pushing plate moves toward the other side of the chuck under the pressure of the digestive tract tissue, the pushing block can push the purse string in the nail pushing plate to extend and nail it into the digestive tract tissue, and the purse string can be fixed at the stapled part of the digestive tract tissue.

[0020] Furthermore, a wire groove is provided on one side of the push pin plate away from the push block; the purse pin is a U-shaped structure; the purse pin and the purse wire are sequentially arranged in the wire groove.

[0021] Furthermore, it also includes a limiting rod; one end of the limiting rod is connected to the outer side wall of one group of the clamps, and the other end is slidably connected to the outer side wall of another group of the clamps; the middle part of the purse string is wound around the limiting rod.

[0022] Furthermore, the limiting rod is made of soft material.

[0023] Furthermore, one group of the chucks is provided with a plurality of protrusions on one side close to the digestive tract tissue, and another group of the chucks is provided with a groove engaging with the protrusions on one side close to the digestive tract tissue; the plurality of protrusions are respectively located on both sides of the nail pushing device.

[0024] Through the above technical solution, the utility model has the following beneficial effects:

[0025] Through the setting of the holding device, the transmission mechanism and the suturing device; and the transmission mechanism is installed between the holding device and the suturing device; the holding device is used to control the operation of the transmission mechanism; the transmission mechanism is used to drive the suturing device to clamp the digestive tract tissue, and drive the suturing device to perform purse-string suturing on the digestive tract tissue. This device does not need to manually pass the purse-string needle and thread through the jaws of the purse-string clamp under the laparoscope, which can reduce the difficulty and risk of the operation and shorten the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an automatic purse-string suture forceps for laparoscope in one embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the transmission mechanism in the automatic purse-string suture forceps for laparoscope in one embodiment of the utility model;

[0028] Figure 3 for Figure 1 A magnified view of the structure at center;

[0029] Figure 4 It is an exploded view of one set of chucks of the suturing device in the automatic purse-string suturing forceps for laparoscope in one embodiment of the utility model;

[0030] Figure 5 It is a structural schematic diagram of a suturing device in an automatic purse-string suturing forceps for laparoscope in one embodiment of the utility model;

[0031] Figure 6 It is a structural schematic diagram of the working state of the automatic purse-string suture for laparoscope in one embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of the structure of the digestive tract tissue after the digestive tract tissue is sutured by automatic purse-string suture using laparoscope in one embodiment of the utility model.

[0033] In the figure, 1, holding device; 11, first handle; 12, second handle; 13, safety device;

[0034] 2. Transmission mechanism; 21. Connecting shell; 22. Transmission rod; 23. First connecting rod; 24. Second connecting rod; 25. First driving rod; 26. Second driving rod;

[0035] 3. Suturing device; 31. Clamp; 311. Nail plate groove; 312. Fixing frame; 32. Nail pushing device; 321. Nail pushing plate; 3210. Wire groove; 322. Pushing block; 33. Purse nail; 34. Purse wire; 35. Limiting rod; 36. Protrusion; 37. Groove;

[0036] 100. Digestive tract tissue; 101. Stapled portion; 200. Sealing cover. DETAILED DESCRIPTION

[0037] The following is a more detailed description of an automatic purse-string suture forceps for laparoscopy of the present invention in conjunction with the accompanying drawings, wherein a preferred embodiment of the present invention is shown, and it should be understood that those skilled in the art can modify the present invention described herein and still achieve the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the present invention.

[0038] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0039] like Figure 1As shown, the embodiment of the utility model provides a convenient and practical automatic purse-string suture forceps for laparoscope, comprising: a holding device 1, a transmission mechanism 2 and a suturing device 3.

[0040] Specifically, the transmission mechanism 2 is installed between the holding device 1 and the suturing device 3; the holding device 1 is used to control the operation of the transmission mechanism 2; the transmission mechanism 2 is used to drive the suturing device 3 to clamp the digestive tract tissue 100, and drive the suturing device 3 to perform purse-string suturing on the digestive tract tissue 100. The digestive tract tissue 100 is the digestive tract tissue to be anastomosed (for example, the digestive tract tissue of the esophagus and the stomach).

[0041] The overall length of the automatic purse-string suture forceps for laparoscope (i.e., from the end of the holding device 1 to the front end of the suturing device 3) ranges from 40 cm to 50 cm. For example, the overall length of the automatic purse-string suture forceps for laparoscope can be 40 cm, 43 cm, 46 cm, 48 cm or 50 cm, etc. It is known to those skilled in the art that the overall length of the automatic purse-string suture forceps for laparoscope can be set according to actual needs.

[0042] In one embodiment, in combination Figure 1 and Figure 2 As shown, the holding device 1 includes: a first handle 11 and a second handle 12 .

[0043] Specifically, a predetermined distance is maintained between one end of the first handle 11 and one end of the second handle 12 (to facilitate subsequent clamping operations); the other end of the first handle 11 and the other end of the second handle 12 are both connected to the transmission mechanism 2; the first handle 11 and the second handle 12 are rotatably connected, and the other end of the second handle 12 can move in a direction parallel to the transmission mechanism 2 and drive the transmission mechanism 2 to operate.

[0044] In this embodiment, the holding device 1 further includes a safety device 13; a slot is provided on the second handle 12; one end of the safety device 13 is rotatably mounted on the first handle 11, and the other end is located in the slot. The setting of the safety device 13 makes it impossible for the first handle 11 and the second handle 12 to be further closed, thereby preventing the firing suturing device 3 from operating.

[0045] In one embodiment, continue to refer to Figure 2 As shown, the transmission mechanism 2 includes: a connecting shell 21, a transmission rod 22, a first connecting rod 23, a second connecting rod 24, a first driving rod 25 and a second driving rod 26.

[0046] Specifically, the connecting shell 21 is connected to the first handle 11; one end of the transmission rod 22 is connected to the second handle 12, and the other end extends into the connecting shell 21; the transmission rod 22 is slidably connected to the inner wall of the connecting shell 21; the first connecting rod 23 and the second connecting rod 24 are both located in the connecting shell 21; one end of the first connecting rod 23 is rotatably connected to one end of the second connecting rod 24, and is rotatably mounted on the transmission rod 22; the other end of the first connecting rod 23 and the other end of the second connecting rod 24 retain a specified spacing (for the convenience of subsequent clamping operations); the first driving rod 25 and the second driving rod 26 are rotatably connected and are located in the connecting shell 21; one end of the first driving rod 25 and one end of the second driving rod 26 are rotatably connected to the other end of the first connecting rod 23 and the other end of the second connecting rod 24 respectively; the other end of the first driving rod 25 and the other end of the second driving rod 26 retain a specified spacing, and both extend to the outside of the connecting shell 21 and are connected to the suturing device 3.

[0047] Preferably, one end of the first connecting rod 23 is rotatably connected to one end of the second connecting rod 24 through a first hinge. The first connecting rod 23 and the second connecting rod 24 are rotatably mounted on the transmission rod 22 through a second hinge. The first driving rod 25 and the second driving rod 26 are rotatably connected through a third hinge. One end of the first driving rod 25 and one end of the second driving rod 26 are rotatably connected to the other end of the first connecting rod 23 and the other end of the second connecting rod 24 respectively through a fourth hinge.

[0048] In one embodiment, in combination Figure 1 , Figure 3-5 As shown, the suturing device 3 comprises: two groups of symmetrically arranged clamps 31 , two groups of nail pushing devices 32 , a plurality of purse string nails 33 and a purse string 34 .

[0049] Specifically, the chuck 31 is connected to the transmission mechanism 2; the nail pushing device 32 is slidably installed on the chuck 31 and is arranged on the side of the chuck 31 close to the digestive tract tissue 100, and the purse string 33 is installed on the nail pushing device 32; the purse string 34 passes through the nail pushing device 32 and the purse string 33; when one side of the chuck 31 is close to the digestive tract tissue 100, the nail pushing device 32 pushes the purse string 33 to extend out of the chuck 31 and nail it into the digestive tract tissue 100, and the purse string 34 can be fixed at the stapled part 101 of the digestive tract tissue 100.

[0050] Wherein, a plurality of the purse-string staples 33 are arranged in sequence on the staple-pushing device 32, thereby ensuring the suturing effect.

[0051] In this embodiment, the nail pushing device 32 includes a nail pushing plate 321 and a pushing block 322 .

[0052] Specifically, a nail plate groove 311 is provided on one side of the chuck 31; the pushing block 322 is installed in the nail plate groove 311; the nail pushing plate 321 is slidably installed in the nail plate groove 311; the purse string 33 is installed in the nail pushing plate 321; the nail pushing plate 321 is provided with a through hole, and the pushing block 322 can pass through the through hole and push out the purse string 33; the purse string 34 passes through the nail pushing plate 321 and the purse string 34; when one side of the chuck 31 is close to the digestive tract tissue 100, the nail pushing plate 321 moves toward the direction close to the other side of the chuck 31 under the pressure of the digestive tract tissue 100, the pushing block 322 can push the purse string 33 in the nail pushing plate 321 to extend and nail it into the digestive tract tissue 100, and the purse string 34 can be fixed at the stapled part 101 of the digestive tract tissue 100.

[0053] There are multiple pushing blocks 322 to facilitate pushing out multiple purse-string nails 33.

[0054] Preferably, a wire groove 3210 is provided on a side of the push pin plate 321 away from the push block 322 ; the purse pin 33 is a U-shaped structure; the purse pin 33 and the purse wire 34 are sequentially arranged in the wire groove 3210 .

[0055] Preferably, the present embodiment further includes a limiting rod 35. Specifically, one end of the limiting rod 35 is connected to the outer side wall of one group of the clamps 31, and the other end is slidably connected to the outer side wall of another group of the clamps 31; the middle part of the purse string 34 is wound around the limiting rod 35. By setting the limiting rod 35, the purse string 34 can be limited to prevent the purse string 34 from being entangled together, thereby avoiding affecting the suturing.

[0056] As a preferred embodiment, the limiting rod 35 is made of soft material to avoid affecting the clamping process of the suturing device 3. For example, the limiting rod 35 can be made of soft silicone material.

[0057] In a specific example, U-shaped fixing frames 312 are provided on the outer side walls of the two sets of clamps 31. One end of the limiting rod 35 is fixedly mounted on one of the U-shaped fixing frames 312, and the other end passes through the other U-shaped fixing frame 312 and is slidably connected to the other U-shaped fixing frame 312.

[0058] In this embodiment, a plurality of protrusions 36 are provided on one side of the clamps 31 close to the digestive tract tissue 100, and a groove 37 engaged with the protrusions 36 is provided on the other side of the clamps 31 close to the digestive tract tissue 100; the plurality of protrusions 36 are respectively located on both sides of the staple pushing device 32. When the suturing device 3 clamps the digestive tract tissue 100, the protrusions 36 are engaged in the grooves 37, which can limit the position of the device and avoid damage to the digestive tract tissue 100 caused by excessive force.

[0059] In this embodiment, combined with Figure 6-7 As shown, the device is placed into the abdominal cavity through a sealing cover 200 (refer to patent number ZL202122038968.1) for placing laparoscopic surgical instruments, the suturing device 3 is placed at the digestive tract tissue 100 that needs purse string suturing and cutting, the holding device 1 is opened, and the opposite sides of the two sets of clamps 31 are placed close to the digestive tract tissue 100. When the suturing device 3 is properly placed, the safety device 13 is rotated counterclockwise (that is, the other end of the safety device 13 is away from the card slot of the second handle 12), and the safety device 13 is released.

[0060] Hold the first handle 11 and the second handle 12 so that the first handle 11 and the second handle 12 are close to each other for clamping operation, and the end (i.e., the other end) of the second handle 12 can move to the right in a direction parallel to the connecting shell 21 (moving to the right means moving in a direction away from the transmission mechanism 2), and drive the transmission rod 22 to move to the right, so that the other end of the first connecting rod 23 and the other end of the second connecting rod 24 are close to each other, thereby driving the other ends of the first driving rod 25 and the second driving rod 26 to approach each other, and can drive the two sets of chucks 31 to approach each other (in the initial state, the two sets of chucks 31 retain a specified interval).

[0061] When the opposite sides of the two groups of chucks 31 are close to the digestive tract tissue, the push plate 321 moves relative to the nail plate slot 311 toward the other side of the chuck 31, and the multiple pushing blocks 322 in the nail plate slot 311 push the multiple purse string nails 33, so that the multiple purse string nails 33 are nailed into the digestive tract tissue 100, and the purse string 34 can be fixed at the stapled part 101.

[0062] In addition, when the suturing device 3 is clamped, the protrusions 36 of one group of chucks 31 and the grooves 37 of another group of chucks 31 abut or engage with each other, which can limit the position of the suturing device 3 (or the device) to prevent damage to the digestive tract tissue caused by excessive force. At the same time, one end of the limiting rod 35 can slide in one of the fixing frames 312 to limit the purse string 34 to prevent the purse string 34 from being entangled. Since the limiting rod 35 is soft in texture, it can avoid affecting the clamping process. After the suturing is completed, the purse string 34 is pulled out from the suturing device 3 to complete the purse sewing.

[0063] In summary, the automatic purse-string suture forceps for laparoscope proposed by the utility model has the following advantages:

[0064] Through the setting of the holding device, the transmission mechanism and the suturing device; and the transmission mechanism is installed between the holding device and the suturing device; the holding device is used to control the operation of the transmission mechanism; the transmission mechanism is used to drive the suturing device to clamp the digestive tract tissue, and drive the suturing device to perform purse-string suturing on the digestive tract tissue. This device does not need to manually pass the purse-string needle and thread through the jaws of the purse-string clamp under the laparoscope, which can reduce the difficulty and risk of the operation and shorten the operation time.

[0065] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automatic purse-string suture forceps for laparoscope, characterized in that: include: A holding device, a transmission mechanism and a suturing device; The transmission mechanism is installed between the holding device and the suturing device; The holding device is used to control the operation of the transmission mechanism; The transmission mechanism is used to drive the suturing device to clamp the digestive tract tissue, and to drive the suturing device to perform purse-string suturing on the digestive tract tissue.

2. The automatic purse-string suture forceps for laparoscope according to claim 1, characterized in that: The holding device comprises: a first handle and a second handle; One end of the first handle and one end of the second handle maintain a predetermined distance; the other end of the first handle and the other end of the second handle are both connected to the transmission mechanism; the first handle and the second handle are rotatably connected, and the other end of the second handle can move in a direction parallel to the transmission mechanism and drive the transmission mechanism to operate.

3. The automatic purse-string suture forceps for laparoscope according to claim 2, characterized in that: The holding device also includes a safety device; a clamping slot is provided on the second handle; one end of the safety device is rotatably mounted on the first handle, and the other end is located in the clamping slot.

4. The automatic purse-string suture forceps for laparoscope according to claim 2, characterized in that: The transmission mechanism comprises: a connecting shell, a transmission rod, a first connecting rod, a second connecting rod, a first driving rod and a second driving rod; The connecting shell is connected to the first handle; One end of the transmission rod is connected to the second handle, and the other end extends into the connecting shell; the transmission rod is slidably connected to the inner wall of the connecting shell; The first connecting rod and the second connecting rod are both located in the connecting shell; one end of the first connecting rod is rotatably connected to one end of the second connecting rod and rotatably mounted on the transmission rod; the other end of the first connecting rod and the other end of the second connecting rod maintain a specified distance; The first driving rod and the second driving rod are rotatably connected and are located in the connecting shell; one end of the first driving rod and one end of the second driving rod are rotatably connected to the other end of the first connecting rod and the other end of the second connecting rod respectively; the other end of the first driving rod and the other end of the second driving rod retain a specified interval, and both extend outside the connecting shell to be connected to the suturing device.

5. The automatic purse-string suture forceps for laparoscope according to claim 1, characterized in that: The suturing device comprises: two sets of symmetrically arranged clamps, two sets of nail pushing devices, a plurality of purse string nails and a purse string; The chuck is connected to the transmission mechanism; the nail pushing device is slidably mounted on the chuck and is arranged on a side of the chuck close to the digestive tract tissue, and the purse string is mounted on the nail pushing device; the purse string passes through the nail pushing device and the purse string; when one side of the chuck is close to the digestive tract tissue, the nail pushing device pushes the purse string to extend out of the chuck and nail into the digestive tract tissue, and the purse string can be fixed at the stapled part of the digestive tract tissue.

6. The automatic purse-string suture forceps for laparoscope according to claim 5, characterized in that: The nail pushing device comprises: a nail pushing plate and a pushing block; A nail plate groove is provided on one side of the chuck; the pushing block is installed in the nail plate groove; the nail pushing plate is slidably installed in the nail plate groove; the purse string is installed in the nail pushing plate; the nail pushing plate is provided with a through hole, and the pushing block can pass through the through hole and push out the purse string; the purse string passes through the nail pushing plate and the purse string; when one side of the chuck is close to the digestive tract tissue, the nail pushing plate moves toward the other side of the chuck under the pressure of the digestive tract tissue, the pushing block can push the purse string in the nail pushing plate to extend and nail it into the digestive tract tissue, and the purse string can be fixed at the stapled part of the digestive tract tissue.

7. The automatic purse-string suture forceps for laparoscope according to claim 6, characterized in that: A wire groove is provided on one side of the push pin plate away from the push block; the purse pin is a U-shaped structure; the purse pin and the purse wire are arranged in the wire groove in sequence.

8. The automatic purse-string suture forceps for laparoscope according to claim 5, characterized in that: It also includes a limiting rod; one end of the limiting rod is connected to the outer side wall of one group of the clamps, and the other end is slidably connected to the outer side wall of another group of the clamps; the middle part of the purse string is wound around the limiting rod.

9. The automatic purse-string suture forceps for laparoscope according to claim 8, characterized in that: The limiting rod is made of soft material.

10. The automatic purse-string suture forceps for laparoscope according to claim 5, characterized in that: One group of the chucks has a plurality of protrusions on one side close to the digestive tract tissue, and another group of the chucks has a groove engaged with the protrusions on one side close to the digestive tract tissue; the plurality of protrusions are respectively located on both sides of the nail pushing device.

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