Anastomosis assembly and anastomat
By designing the guide shaft and auxiliary puncture head in the anastomosis assembly, the problem of difficult operation of inserting the anvil through the mouth was solved, realizing the accuracy and safety of digestive tract anastomosis, and improving the efficiency and anastomosis effect of surgical procedures.
Patent Information
- Application Number
- CN202421279015.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-06-05
AI Technical Summary
Existing transoral insertion of anvils is difficult to operate in clinical applications, traction is time-consuming and laborious, and it is easy to cause esophageal damage. It also lacks a structure that can stably fix intestinal tissue.
An anastomosis assembly was designed, including an anvil, a traction tube, and a traction wire. The anvil is guided to move by a guide shaft and an auxiliary puncture head. The auxiliary puncture head punctures the digestive tract stump. The traction wire pulls the guide shaft to expose it. An expansion ring fixes the digestive tract stump. When the annular anvil surface is anastomosed with the staple cartridge, it provides tissue-accommodating space to ensure the neatness and firmness of the anastomosis.
It achieves accurate traction of the anvil, avoids directional deviation and damage to the digestive tract, and is simple and quick to operate, improving the suturing efficiency and anastomosis effect of surgical procedures.
Smart Images
Figure CN223541949U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and more specifically, to an anastomosis assembly and an anastomosis device. Background Technology
[0002] Anastomosing devices are medical devices used to replace manual suturing. Their main working principle is to use titanium staples to sever or anastomose tissue. Anastomosing devices use double rows of cross-arranged staples for anastomosis. Simultaneously, a circular blade removes excess tissue from the inner edges of the staples, creating an anastomosis with consistent diameter, neat mucosal alignment, reliable anastomosis, and good hemostasis and blood supply. The anastomosis is completed in one operation, making it convenient to use.
[0003] Disposable tubular anastomotic devices are suitable for end-to-end or end-to-side anastomoses of the esophagus, stomach, and intestines. They are widely used and have significant effects in gastrointestinal surgical reconstruction, providing a new method for surgery and conforming to the modern surgical development trend of minimally invasive, rapid, safe, and simple procedures. In minimally invasive surgical anastomoses for esophageal and other digestive tract reconstructions, they are often used in conjunction with transoral anvils. However, existing transoral anvils still have the following inconveniences in clinical application: inserting the anvil into the esophagus is difficult; the traction structure of the anvil is time-consuming and laborious to reach the anastomosis site from the esophageal inlet, and may cause esophageal injury; the puncture structure of the anvil usually has the traction suture thread threaded on the side of the tip, which is prone to lateral deviation; and the directional axis on the anvil lacks a structure to stably fix intestinal tissue. Utility Model Content
[0004] The present invention aims to overcome at least one of the defects of the prior art and provide an anastomosis component and anastomosis device to solve the problem of difficulty in anastomosis seat traction.
[0005] The technical solution adopted by this utility model is an anastomosis component, including an anvil, a traction tube, and a traction wire. The anvil includes an anvil top cover, a guide shaft, and an auxiliary puncture head connected in sequence. The traction tube is connected to the anvil top cover, and the traction wire is connected to the auxiliary puncture head.
[0006] The traction tube serves to pull the top cover of the anvil, and the traction line serves to pull the auxiliary puncture head. The guide shaft and auxiliary puncture head guide the movement direction of the anvil, facilitating its transport through the digestive tract. After the traction tube pulls the anvil to the anastomosis site, the auxiliary puncture head punctures the digestive tract stump, and the traction line pulls until the guide shaft is exposed, leaving the top cover of the anvil in the digestive tract stump. In a preferred embodiment, the traction tube is a gastric tube. This technical solution can smoothly and accurately pull the anvil to the anastomosis site through the digestive tract, without easily causing directional deviation or damaging the inner wall of the digestive tract during traction. It is simple, convenient, fast, time-saving, and labor-saving, which helps to further improve the suturing efficiency of doctors in surgical procedures.
[0007] Furthermore, the auxiliary puncture head is cone-shaped, and the tip of the auxiliary puncture head is provided with a wire outlet hole, through which one end of the traction wire passes.
[0008] This technical solution ensures that the tip of the auxiliary puncture head always maintains the same direction as the traction line during the traction process, making it easier to control the direction, minimizing directional deviation that could damage the digestive tract, and improving safety.
[0009] Furthermore, the guide shaft has an open assembly section at one end away from the top cover of the anvil, and the auxiliary piercing head is detachably connected to the assembly section of the guide shaft.
[0010] The auxiliary puncture head is detachable and serves as a guide during traction. When it reaches the anastomosis site, it is punctured to expose the guide shaft so that the top cover of the anvil remains in the digestive tract stump. Then, the auxiliary puncture head is removed to facilitate the next step of connecting the assembly section of the guide shaft to the puncture needle of the anastomosis device.
[0011] Furthermore, the anvil top cover includes: an outer spherical crown surface with a raised top, an inner spherical crown surface recessed towards the outer spherical crown surface, and an annular anvil surface located at the bottom of the anvil top cover and connecting the outer spherical crown surface and the inner spherical crown surface.
[0012] When the annular anvil surface mates with the staple cartridge, the tissue at the edges is compressed and moves to both sides. The inner spherical surface can form a space to accommodate excess tissue, facilitating the formation of anastomoses with consistent diameter, neat mucosal alignment, and reliable anastomosis, resulting in a better anastomosis effect. Preferably, the outer spherical surface is smooth, and the connection between the outer spherical surface and the annular anvil surface is smooth, reducing friction and facilitating the smooth transport of the anvil seat in the digestive tract, minimizing damage to the digestive tract caused by the anvil seat.
[0013] Furthermore, an extension ring with a diameter larger than that of the guide shaft is fitted at one end of the guide shaft near the inner spherical surface.
[0014] The expansion ring can fit tightly against the digestive tract stump, fixing the digestive tract stump at a position near the inner spherical surface of the guide shaft; it can also fix more tissue at the anastomosis, resulting in a larger anastomosis diameter.
[0015] Furthermore, the expansion ring is detachably mounted on the guide shaft, and the expansion ring can be replaced or its size changed according to actual conditions.
[0016] Furthermore, the expansion ring is provided with an annular groove, and the plane containing the annular abutment surface passes through the annular groove.
[0017] When the annular anvil surface mates with the staple cartridge, the tissues at the two digestive tract remnants are compressed and moved. The annular groove and the inner spherical crown surface are located at the anastomosis and on one side of the anastomosis, respectively, providing space for the excess tissues at the two digestive tract remnants, which facilitates the formation of anastomosis with consistent diameter, neat mucosal alignment, and reliable anastomosis.
[0018] Furthermore, a traction tube connector is provided at the center of the outer spherical crown surface.
[0019] The traction tube connector is used to fix the traction tube to the outer spherical surface; it is located at the center of the outer spherical surface, which makes it convenient for doctors to control the position of the anvil and prevents it from shifting.
[0020] Furthermore, the length of the traction wire passing through the outlet hole is 15~25cm, and the traction wire is made of nylon thread, which is soft and has a certain degree of toughness, is not easy to break, and has a low cost.
[0021] This utility model also discloses a stapler, including a body, a staple cartridge located at the top of the body, and a puncture needle at the center of the staple cartridge. The body is equipped with an adjustment device for adjusting the position of the puncture needle and an activation device for ejecting the staples and annular cutter from the staple cartridge. It also includes the aforementioned stapler assembly. An auxiliary puncture head is detachably connected to a guide shaft, and the puncture needle is connected to the guide shaft for removing the auxiliary puncture head. The top cover of the stapler seat fits into the staple cartridge. It has a simple structure, is easy to operate, and provides good stapler results.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0023] This invention can smoothly and accurately pull the anvil to the anastomosis site through the digestive tract. It is not easy to deviate in direction during the traction process, nor is it easy to damage the inner wall of the digestive tract. It is simple, convenient and fast to operate, saving time and effort, and is conducive to further improving the suturing efficiency of doctors in surgical procedures.
[0024] The expansion ring can fit tightly against the digestive tract stump, fixing the digestive tract stump at a certain position near the inner spherical surface of the guide shaft; it can also fix more tissue at the anastomosis, resulting in a larger anastomosis diameter.
[0025] When the annular anvil surface aligns with the staple cartridge, the tissues at both ends of the digestive tract are compressed and moved. The annular groove and the inner spherical crown surface are located at the anastomosis site and on one side of the anastomosis site, respectively, providing space for the excess tissues at both ends of the digestive tract. This facilitates the formation of anastomoses with consistent diameter, neat mucosal alignment, and reliable anastomosis, resulting in a good anastomosis effect. Attached Figure Description
[0026] Figure 1 A schematic diagram showing the engagement of the pin holder and the pin cartridge.
[0027] Figure 2 This is a schematic diagram showing the connection between the anvil and the staple cartridge.
[0028] Figure 3 for Figure 2 A magnified view of a portion of the image.
[0029] Figure 4 This is a schematic diagram of the anvil seat during the traction process.
[0030] Figure 5 for Figure 4 Cross-sectional view.
[0031] Explanation of reference numerals in the attached diagram: Anchor seat 100, traction tube connector 110, anchor seat top cover 120, outer spherical crown surface 121, inner spherical crown surface 122, annular anchor surface 123, expansion ring 130, annular groove 131, guide shaft 140, auxiliary puncture head 150, traction tube 200, traction line 300, device body 400, staple cartridge 500, puncture needle 600, activation device 800. Detailed Implementation
[0032] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0033] Example 1
[0034] like Figure 4 As shown, this embodiment is an anastomosis assembly, including an anvil 100, a traction tube 200 and a traction wire 300. The anvil 100 includes an anvil top cover 120, a guide shaft 140 and an auxiliary puncture head 150 connected in sequence. The traction tube 200 is connected to the anvil top cover 120 and the traction wire 300 is connected to the auxiliary puncture head 150.
[0035] The traction tube 200 serves to pull the anvil cover 120, and the traction wire 300 serves to pull the auxiliary puncture head 150. The guide shaft 140 and the auxiliary puncture head 150 are used to guide the movement direction of the anvil 100, facilitating its transport in the digestive tract. After the traction tube 200 pulls the anvil 100 to the anastomosis site, the auxiliary puncture head 150 punctures the digestive tract stump, and the traction wire 300 pulls until the guide shaft 140 is exposed, leaving the anvil cover 120 in the digestive tract stump. In this embodiment, the traction tube 200 is a gastric tube.
[0036] like Figure 4 As shown, the auxiliary puncture head 150 is cone-shaped, and the tip of the auxiliary puncture head 150 is provided with a wire outlet hole. One end of the traction wire 300 passes through the wire outlet hole from the auxiliary puncture head 150. During the traction process, the tip of the auxiliary puncture head 150 and the traction wire 300 can always be aligned in the same direction, which is convenient for controlling the direction, minimizing the risk of directional deviation that could damage the digestive tract, and improving safety.
[0037] like Figure 5 As shown, the guide shaft 140 has an open assembly section at one end away from the anvil top cover 120, and the auxiliary puncture head 150 is detachably connected to the assembly section of the guide shaft 140. The assembly section may have a locking structure for fixing the auxiliary puncture head 150 or the puncture needle 600. The auxiliary puncture head 150 is detachable and serves as a guide during traction. Upon reaching the anastomosis site, it performs puncture to expose the guide shaft 140, leaving the anvil top cover 120 in the digestive tract stump. The auxiliary puncture head 150 is then removed to facilitate the next step of connecting the assembly section of the guide shaft 140 to the puncture needle 600 of the anastomosis device.
[0038] like Figure 5 As shown, the anvil top cover 120 includes: an outer spherical crown surface 121 with a raised top, an inner spherical crown surface 122 recessed towards the outer spherical crown surface 121, and an annular anvil surface 123 located at the bottom of the anvil top cover 120, connecting the outer spherical crown surface 121 and the inner spherical crown surface 122. When the annular anvil surface 123 abuts against the staple cartridge 500, the tissue at the edge is compressed and moves to both sides. The inner spherical crown surface 122 can form a space to accommodate excess tissue, facilitating the formation of an anastomosis with consistent diameter, neat mucosal alignment, and reliable anastomosis firmness, resulting in a better anastomosis effect. The outer spherical crown surface 121 is a smooth surface, and the connection between the outer spherical crown surface 121 and the annular anvil surface 123 is smoothly transitioned, reducing friction and facilitating the smooth transport of the anvil 100 in the digestive tract, minimizing damage to the digestive tract caused by the anvil 100.
[0039] like Figure 4 and 5As shown, an expansion ring 130 with a diameter larger than that of the guide shaft 140 is fitted at one end of the guide shaft 140 near the inner spherical surface 122. The expansion ring 130 can fit tightly against the digestive tract stump, fixing the digestive tract stump at a certain position of the guide shaft 140 near the inner spherical surface 122; it can also fix more tissue at the anastomosis, resulting in a larger anastomosis diameter.
[0040] The expansion ring 130 is detachably installed on the guide shaft 140. The expansion ring 130 can be replaced or its size can be changed according to the actual situation.
[0041] The expansion ring 130 is provided with an annular groove 131, and the plane containing the annular anvil surface 123 passes through the annular groove 131. When the annular anvil surface 123 is aligned with the staple cartridge 500, the tissues at the two digestive tract remnants are compressed and moved. The annular groove 131 and the inner spherical crown surface 122 are located at the anastomosis and on one side of the anastomosis, respectively, providing space for the excess tissues at the two digestive tract remnants, which facilitates the formation of an anastomosis with consistent diameter, neat mucosal alignment, and reliable anastomosis.
[0042] like Figures 1-5 As shown, a traction tube connector 110 is provided at the center of the outer spherical surface 121. The traction tube connector 110 is used to fix the traction tube 200 to the outer spherical surface 121, and the traction tube 200 is detachably connected to the traction tube connector 110; it is located at the center of the outer spherical surface 121, which makes it convenient for doctors to control the position of the anvil seat 100 with traction and prevents it from shifting.
[0043] The length of the traction line 300 that passes through the outlet hole is 15~25cm. The traction line 300 is made of nylon thread, which is soft and has a certain degree of toughness, is not easy to break, and has a low cost.
[0044] An anastomosis device includes a body 400, a staple cartridge 500 located at the top of the body 400, and a puncture needle 600 at the center of the staple cartridge 500. The body 400 is provided with an adjustment device for adjusting the position of the puncture needle 600 and an activation device 800 for ejecting staples and a circular cutter from the staple cartridge 500. It also includes the aforementioned anastomosis assembly. An auxiliary puncture head 150 is detachably connected to a guide shaft 140. The puncture needle 600 is engaged with the guide shaft 140 for removing the auxiliary puncture head 150. The anvil cover 120 abuts against the staple cartridge 500. It has a simple structure, is easy to operate, and provides good anastomosis results.
[0045] The method of using this utility model is as follows:
[0046] The anvil 100, connected to the traction tube 200 and traction wire 300, is inserted into the digestive tract. After the traction tube 200 pulls the anvil 100 to the anastomosis site, the auxiliary puncture head 150 punctures the digestive tract stump. The traction wire 300 pulls until the guide shaft 140 is exposed. The digestive tract stump is stuck in front of the expansion ring 130, and the anvil top cover 120 remains in the digestive tract stump. The auxiliary puncture head 150 and traction wire 300 are removed, and the anastomosis device body 400 extends into another anastomosis device. In the anastomosis process, the adjusting device adjusts the puncture needle 600 to expose the anastomosis site, connects the anvil seat 100 and the puncture needle 600, and adjusts the adjusting device to retract the puncture needle 600 into the device body 400 until the anvil seat 100 matches the staple cartridge 500. The activating device 800 pushes out the suture staples in the staple cartridge 500 for suturing, pushes out the annular cutter in the staple cartridge 500 to remove excess tissue, removes the anastomosis device, sutures other parts, and removes excess tissue from the anastomosis device.
[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A fitting assembly, characterized in that, It includes an anvil, a traction tube, and a traction wire. The anvil includes an anvil top cover, a guide shaft, and an auxiliary puncture head connected in sequence. The traction tube is connected to the anvil top cover, and the traction wire is connected to the auxiliary puncture head.
2. The matching assembly according to claim 1, characterized in that, The auxiliary puncture head is cone-shaped, and the tip of the auxiliary puncture head is provided with a wire outlet hole. One end of the traction wire passes through the wire outlet hole from the auxiliary puncture head.
3. The matching component according to claim 1, characterized in that, The guide shaft has an open assembly section at one end away from the top cover of the anvil, and the auxiliary piercing head is detachably connected to the assembly section of the guide shaft.
4. The matching assembly according to claim 1, characterized in that, The anvil top cover includes: an outer spherical crown surface that protrudes from the top, an inner spherical crown surface that is recessed towards the outer spherical crown surface, and an annular anvil surface located at the bottom of the anvil top cover and connecting the outer spherical crown surface and the inner spherical crown surface.
5. The matching assembly according to claim 4, characterized in that, An expansion ring with a diameter larger than that of the guide shaft is fitted at one end near the inner spherical surface.
6. The matching assembly according to claim 5, characterized in that, The expansion ring can be detachably installed on the guide shaft.
7. The matching assembly according to claim 5, characterized in that, The expansion ring has an annular groove, and the plane containing the annular abutment surface passes through the annular groove.
8. The matching assembly according to claim 4, characterized in that, The outer spherical crown surface is provided with a traction tube connector at its center.
9. A matching assembly according to claim 2, characterized in that, The length of the traction wire at the outlet hole is 15~25cm, and the traction wire is a nylon thread.
10. A stapler, comprising a body, a staple cartridge located at the top of the body, and a puncture needle at the center of the staple cartridge, wherein the body is provided with an adjustment device for adjusting the position of the puncture needle and an activation device for ejecting staples and a circular cutter from the staple cartridge, characterized in that, It also includes an anastomosis assembly as described in any one of claims 1-9, wherein the auxiliary puncture head is detachably connected to the guide shaft, the puncture needle is connected to the guide shaft for disassembling the auxiliary puncture head, and the anvil top cover is abutted to the staple cartridge.