Digestive tract tubular anastomat

Abstract

The digestive tract tubular anastomat comprises an anastomat body, a nail anvil and two diameter adjusting mechanisms, a needle cylinder of the anastomat body and the nail anvil are sleeved with the two diameter adjusting mechanisms respectively, and the diameter adjusting mechanisms can adjust the peripheral size in the radial direction. The digestive tract tubular anastomat can be conveniently used for anastomosis of pipelines with different diameters, so that the convenience and the anastomosis quality are improved.

Description

Technical Field

[0001] The present invention particularly relates to a digestive tract tube-type anastomosis device. Background Art

[0002] A gastrointestinal tubular stapler comprises a stapler body with a straight or curved neck, a fixed or removable staple cartridge mounted at the head of the stapler body, a removable anvil mounted at the front end of the stapler, a pivotable firing handle mounted in the body, a safety mechanism mounted adjacent to the firing handle, an adjustment knob mounted at the rear end of the stapler body, an anvil position indicator mounted in the body, an anvil pull rod, a staple push rod, and other auxiliary components mounted within the body. The staple cartridge contains staples, a staple pusher, and an annular knife. The staples are arranged circumferentially within a staple cartridge at the circular front end of the staple cartridge. The anvil has staple-forming grooves on its end face opposite the cartridge, corresponding to the positions of the staples within the cartridge. An anvil knife is mounted at the position corresponding to the position of the annular knife within the cartridge. Turning the adjustment knob moves the anvil pull rod via a screw mechanism, causing the staples to move forward and backward relative to the cartridge. Open the safety mechanism, you can clamp the firing handle to push the nail push rod forward, through the nail push seat in the nail barrel to push out the anastomotic staples and annular knife. The anastomotic staples can be made of stainless steel wire, tantalum wire, titanium wire or other metal wires with similar properties.

[0003] To use a tubular gastrointestinal stapler, first insert the device into the tissue to be anastomosed. Then, turn the adjustment knob to advance the anvil, tightening the tissue against the anvil pull rod between the anvil and the staple barrel. Then, turn the adjustment knob in the opposite direction while observing the indicator mechanism to achieve the desired clamping thickness between the anvil and the staple barrel. Once the tissue is clamped, release the safety mechanism, tighten the firing handle, and eject the staples and annular blade from the staple barrel. Once the staples are ejected from the staple barrel, they penetrate the clamped tissue and reach the grooves in the anvil, bending the U-shaped staples into a B-shape, achieving the desired tissue anastomosis. Once the annular blade is ejected from the staple barrel, it strikes the anvil inside the anvil, removing any excess tissue from the clamped tissue. After the anastomosis is complete, turn the adjustment knob to increase the distance between the anvil and the staple barrel, loosening the stapled tissue and allowing the device to be removed.

[0004] However, since the diameters of the stapler barrel and the anvil of the existing digestive tract tubular stapler are fixed for each type of digestive tract tubular stapler, it can only anastomose tubes of fixed diameters. However, the diameters of tubes in different patients or at different locations must be different, which is bound to cause certain troubles in the anastomosis. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a digestive tract tube-type anastomosis device that can be conveniently used for anastomosis of pipes of different diameters, thereby improving convenience.

[0006] In order to achieve the above-mentioned objectives, the present invention is implemented through the following technical solution: a digestive tract tubular anastomosis device, comprising an anastomosis device body and an anvil, and also comprising a diameter adjustment mechanism, wherein there are two diameter adjustment mechanisms, the two diameter adjustment mechanisms are respectively mounted on the needle barrel of the anastomosis device body and the anvil, and the diameter adjustment mechanism can radially adjust the size of the outer dimension.

[0007] Furthermore, the diameter adjustment mechanism includes a fixed sleeve, a support rod and a driving structure. The fixed sleeve is fixed on the syringe or the anvil. The fixed sleeve is provided with a plurality of sliding grooves extending radially outward and connected to the outside world at circumferential intervals. The support rod can be slidably inserted in the sliding groove. The driving structure is connected to all the support rods and can simultaneously drive all the support rods to slide inward or outward at the same time.

[0008] Furthermore, the driving structure includes a rotary driving source, a driving disk and an insertion rod, the sliding groove is connected to the ends of the two fixed sleeves that are away from each other, and each of the support rods is provided with an insertion rod. The driving disk can be rotatably sleeved on the syringe or the anvil, and is located on the side of the two fixed sleeves that are away from each other. A plurality of circumferentially spaced arc guide grooves are provided on the driving disk, and one end of the arc guide groove is offset toward its central axis, and the insertion rod can be slidably inserted in the corresponding arc guide groove.

[0009] Furthermore, the diameter adjustment mechanism also includes a locking member, which includes a locking screw. The locking screw is installed on the driving disk and is threadedly connected to the driving disk. By rotating the locking screw, it can be tightened against the end face of the fixed sleeve.

[0010] Furthermore, it also includes a circular support structure, which includes an elastic ring. A guide groove is opened at the end of each support rod, and the elastic ring is surrounded by a steel bar that can slide through all the guide grooves in sequence.

[0011] Furthermore, the circular support structure further includes two limiting sleeves, which are respectively located at the first and second ends of the steel bar, and the steel bar passes through the two limiting sleeves.

[0012] Furthermore, it also includes a spherical guide cap, which is arranged on the diameter adjustment mechanism sleeved on the anvil, and the edge of the guide cap is connected to the end of the support rod, and the guide cap can be elastically deformed.

[0013] Furthermore, the guide cap includes a plurality of outwardly arched steel bars, and both ends of each of the steel bars are respectively fixed to the ends of the two support rods that are oppositely arranged.

[0014] Furthermore, the guide cap further comprises a support rod, which is fixed on the anvil and coaxially arranged with the anvil, and the end of the support rod is fixedly connected to the middle part of all the steel bars.

[0015] Beneficial effects of the present invention: During use, the two diameter adjustment mechanisms of the present digestive tract tube-type stapler are adjusted according to the diameters of the two tubes to be anastomosed. Then, using the same method as conventional digestive tract tube-type staplers, the anvil is inserted into the end of one tube and the syringe into the end of the other tube. The adjustment knob is then turned to move the anvil forward, tightening the tissue to be anastomosed against the anvil pull rod between the anvil and the cartridge. The adjustment knob is then turned in the opposite direction, while observing the indicator mechanism, to achieve the desired clamping thickness between the anvil and cartridge. Once the tissue is clamped, the safety mechanism is released, which allows the firing handle to be tightened to eject the staples and annular blade from the cartridge. Once the staple is ejected from the cartridge, it penetrates the clamped tissue and strikes the anvil's forming groove, bending the U-shaped staple into a B-shape, achieving the desired tissue anastomosis. Once the annular blade is ejected from the cartridge, it strikes the anvil inside the anvil, removing any excess tissue from the clamped tissue. After completing the anastomosis operation, turn the adjustment knob to increase the distance between the anvil and the nail barrel, loosen the stapled tissue, and withdraw the digestive tract tubular stapler.

[0016] The above-mentioned digestive tract tube-shaped anastomosis device is used to anastomose pipes of different diameters, thereby greatly improving convenience and, at the same time, improving the anastomosis quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A schematic diagram of an overall digestive tract tubular stapler provided by one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of an end portion of a digestive tract tubular anastomosis device is shown; Figure 3 for Figure 1 The diagram shows an assembly diagram of a digestive tract tubular anastomosis device after a diameter adjustment mechanism is installed at the end of the needle barrel; Figure 4 for Figure 1A schematic diagram of the assembly of a diameter adjustment mechanism and a guide cap installed at the end of the anvil of a digestive tract tubular anastomosis device is shown; Figure 5 for Figure 1 Schematic diagram of a supporting structure in a digestive tract tube-type anastomosis device Reference numerals: 100. Stapler body; 200. Anvil; 300. Diameter adjustment mechanism; 310. Fixed sleeve; 320. Support rod; 330. Drive structure; 331. Drive disk; 332. Insert rod; 340. Locking piece; 350. Support structure; 351. Elastic ring; 352. Limiting sleeve; 400. Guide cap; 410. Steel bar; 420. Support rod. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0020] See Figures 1 to 3 The present invention provides a digestive tract tubular stapler, comprising a stapler body 100, an anvil 200, and a diameter adjustment mechanism 300. The two diameter adjustment mechanisms 300 are respectively mounted on the needle barrel of the stapler body 100 and the anvil 200, and the diameter adjustment mechanisms 300 can adjust the outer dimensions in the radial direction.

[0021] During use, the outer dimensions of the two diameter adjustment mechanisms 300 are adjusted according to the diameters of the two tubes to be anastomosed. Then, using the same method as a conventional digestive tract tube-type stapler, the anvil 200 is first inserted into the end of one tube and the syringe into the end of the other tube. The adjustment knob is then turned to move the anvil 200 forward, tightening the tissue to be anastomosed against the anvil 200 pull rod between the anvil 200 and the staple barrel. The adjustment knob is then turned in the opposite direction, while observing the indicator mechanism, to achieve the desired clamping thickness between the anvil 200 and the staple barrel. Once the tissue is clamped, the safety mechanism is released, tightening the firing handle to eject the staples and annular blade from the staple barrel. Once the staple is ejected from the staple barrel, it penetrates the clamped tissue to reach the forming groove on the anvil 200, bending the U-shaped staple into a B-shape, achieving the surgical goal of anastomosing the tissues. When the annular knife is pushed out of the nail barrel, it directly hits the knife anvil in the nail anvil 200 and cuts off the excess part of the clamped tissue to be stapled. After the staple operation is completed, the adjustment knob is turned to increase the distance between the nail anvil 200 and the nail barrel, loosening the stapled tissue so that the digestive tract tubular stapler can be withdrawn.

[0022] The above-mentioned digestive tract tube-type anastomosis device can be used to anastomose pipes of different diameters, thereby greatly improving convenience and, at the same time, improving the anastomosis quality.

[0023] Specifically, the diameter adjustment mechanism 300 includes a fixed sleeve 310, a support rod 320 and a driving structure 330. The fixed sleeve 310 is fixed on the syringe or the anvil 200. The fixed sleeve 310 is provided with a plurality of sliding grooves extending radially outward and connected to the outside world at circumferential intervals. The support rod 320 can be slidably inserted in the sliding groove. The driving structure 330 is connected to all the support rods 320 and can drive all the support rods 320 to slide inward or outward at the same time.

[0024] In this embodiment, the drive structure 330 includes a rotary drive source, a drive disk 331, and an insertion rod 332. The drive disk 331 can be rotatably mounted on the syringe or anvil 200, and the slide groove is connected to the ends of the two fixed sleeves 310 that face away from each other. Each support rod 320 is provided with an insertion rod 332. The drive disk 331 can be rotatably mounted on the syringe or anvil 200 and is located on the side of the two fixed sleeves 310 that face away from each other. The drive disk 331 is provided with a plurality of circumferentially spaced arcuate guide grooves, one end of which is offset toward its central axis, and the insertion rod 332 can be slidably inserted into the corresponding arcuate guide groove.

[0025] When in use, the driving disk 331 only needs to be driven clockwise or counterclockwise by the rotary driving source. Driven by the insertion rod 332, the support rod 320 can be driven to move outward or retract inward, thereby achieving the purpose of changing the outer size of the diameter adjustment mechanism 300.

[0026] In specific implementation, the rotation drive source can be manual rotation or other methods, such as rotating the friction wheel through a rotating motor so that the friction wheel contacts the side wall of the driving disk 331, or drives the driving disk 331 to rotate.

[0027] As a preferred embodiment, the diameter adjustment mechanism 300 further includes a locking member 340, which includes a locking screw. The locking screw is mounted on the driving disk 331 and is threadedly connected to the driving disk. When the locking screw is rotated, it can be tightened against the end surface of the fixed sleeve 310. This locking prevents the rotating disk from rotating accidentally.

[0028] As another preferred embodiment, the device further includes a circular support structure 350. This structure comprises an elastic ring 351. Each support rod 320 has a guide slot defined at its end. The elastic ring 351 is formed by a steel bar 410 that slides through all of the guide slots. The support provided by the elastic ring 351 prevents the pipe from collapsing where it is not in contact with the ends of the support rods 320, thereby compromising its support.

[0029] As a more preferred embodiment, the circular support structure 350 further includes two limiting sleeves 352 , which are respectively located at the first and second ends of the steel bar 410 , and the steel bar 410 passes through the two limiting sleeves 352 .

[0030] The limiting sleeve 352 can prevent the elastic ring 351 from tilting up at both ends and puncturing the inner wall of the pipe to be anastomosed.

[0031] As another preferred embodiment, the stapler further includes a spherical guide cap 400. The guide cap 400 is mounted on the diameter adjustment mechanism 300, which is mounted on the anvil 200. The edge of the guide cap 400 is connected to the end of the strut 320. The guide cap 400 is elastically deformable. The guide cap 400 facilitates placement of the anvil 200 into the pipe.

[0032] Specifically, the guide cap 400 includes a plurality of outwardly arched steel bars 410 , and both ends of each steel bar 410 are respectively fixed to the ends of two oppositely arranged support rods 320 .

[0033] Furthermore, the guide cap 400 further includes a support rod 320, which is fixed to the anvil 200 and coaxially arranged with the anvil 200. The ends of the support rod 320 are fixedly connected to the middle portions of all the steel bars 410. The support of the support rod 3200 improves the shape stability of the guide cap 400 and prevents deformation or collapse.

[0034] Specific steps for using the above-mentioned digestive tract tubular anastomosis device: During use, the two drive disks 331 are rotated according to the desired tube to be anastomosed, driving the struts 320 to the desired position. This allows the diameter adjustment mechanism 300 to radially adjust the outer dimensions to match the inner diameter of the tube to be anastomosed. Then, using the same method as a conventional digestive tract tube-type stapler, the anvil 200 is first inserted into the end of one tube and the syringe into the other. The adjustment knob is then rotated to move the anvil 200 forward, tightening the tissue to be anastomosed onto the anvil 200 pull rod between the anvil 200 and the cartridge. The adjustment knob is then rotated in the opposite direction, while observing the indicator mechanism, to achieve the desired clamping thickness between the anvil 200 and the cartridge. Once the tissue is clamped, the safety mechanism is released, tightening the firing handle to eject the staples and annular blade from the cartridge. Once the staple is ejected from the cartridge, it penetrates the clamped tissue to be anastomosed and reaches the forming groove on the anvil 200, bending the U-shaped staple into a B-shape, achieving the surgical goal of anastomosing the tissue. When the annular knife is pushed out of the nail barrel, it directly hits the knife anvil in the nail anvil 200 and cuts off the excess part of the clamped tissue to be stapled. After the staple operation is completed, the adjustment knob is turned to increase the distance between the nail anvil 200 and the nail barrel, loosening the stapled tissue so that the digestive tract tubular stapler can be withdrawn.

[0035] The above-mentioned digestive tract tube-type anastomosis device can be used to anastomose pipes of different diameters, thereby greatly improving convenience and, at the same time, improving the anastomosis quality.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A digestive tract tubular anastomosis device, comprising an anastomosis device body and an anvil, characterized in that: It also includes a diameter adjustment mechanism, which has two diameter adjustment mechanisms. The two diameter adjustment mechanisms are respectively sleeved on the needle cylinder of the stapler body and the anvil, and the diameter adjustment mechanism can adjust the size of the outer dimension in the radial direction.

2. The digestive tract tubular anastomosis device according to claim 1, characterized in that: The diameter adjustment mechanism includes a fixed sleeve, a support rod and a driving structure. The fixed sleeve is fixed on the needle cylinder or the anvil. The fixed sleeve is circumferentially spaced with a plurality of sliding grooves extending radially outward and connected to the outside world. The support rod can be slidably inserted in the sliding groove. The driving structure is connected to all the support rods and can simultaneously drive all the support rods to slide inward or outward.

3. The digestive tract tubular anastomosis device according to claim 2, characterized in that: The driving structure includes a rotary driving source, a driving disk and an insertion rod. The sliding groove is connected to the ends of the two fixed sleeves that are away from each other. Each of the support rods is provided with an insertion rod. The driving disk can be rotatably sleeved on the needle cylinder or the anvil and is located on the side where the two fixed sleeves are away from each other. A plurality of circumferentially spaced arc guide grooves are provided on the driving disk. One end of the arc guide groove is offset toward its central axis, and the insertion rod can be slidably inserted in the corresponding arc guide groove.

4. The digestive tract tubular anastomosis device according to claim 3, characterized in that: The diameter adjustment mechanism also includes a locking member, which includes a locking screw. The locking screw is installed on the driving disk and is threadedly connected to the driving disk. The locking screw is rotated to tighten against the end surface of the fixed sleeve.

5. The digestive tract tubular anastomosis device according to claim 2, characterized in that: It also includes a circular support structure, which includes an elastic ring. A guide groove is opened at the end of each support rod, and the elastic ring is surrounded by a steel bar that can slide through all the guide grooves in sequence.

6. The digestive tract tubular anastomosis device according to claim 5, characterized in that: The circular support structure further includes two limiting sleeves, which are respectively located at the first and second ends of the steel bar, and the steel bar passes through the two limiting sleeves.

7. The digestive tract tubular anastomosis device according to claim 2, characterized in that: It also includes a spherical guide cap, which is arranged on the diameter adjustment mechanism sleeved on the anvil, and the edge of the guide cap is connected to the end of the support rod, and the guide cap is elastically deformable.

8. The digestive tract tubular anastomosis device according to claim 7, characterized in that: The guide cap includes a plurality of outwardly arched steel bars, and both ends of each of the steel bars are respectively fixed to the ends of the two support rods that are oppositely arranged.

9. The digestive tract tubular anastomosis device according to claim 8, characterized in that: The guide cap further comprises a support rod, which is fixed on the anvil and coaxially arranged with the anvil, and the end of the support rod is fixedly connected to the middle part of all the steel bars.

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