Magnetic anastomat

Abstract

The utility model relates to a magnetic anastomat which comprises two annular carriers. Annular inner cavities are formed in the two annular carriers, and magnetic rings are arranged in the annular inner cavities; a plurality of sets of nail outlet holes are annularly formed in the anastomosis face of the annular carrier, the wall face where the anastomosis face is located is made of flexible materials, and the anastomosis nails are embedded in the nail outlet holes in an interference mode. And when the anastomosis surfaces of the two annular carriers are close to each other, the two magnetic rings attract each other and extrude the flexible material and push the anastomosis nail, so that anastomosis is realized. The two annular carriers push the anastomosis nails through magnetic force to connect the intestinal tracts at the two ends together, and the two annular carriers continuously apply pressure to the two connected sides of the intestinal tracts through magnetic force, so that the situation that an anastomotic stoma is stressed and broken due to the fact that the intestinal tracts are subjected to external force in the healing process is avoided; therefore, leakage of the anastomotic stoma is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a magnetic stapler. Background Technology

[0002] Currently available tubular staplers typically insert two concentric, staggered rings of staples into the tissue to be anastomosed and separated. After passing through the tissue, the staples are blocked by an anvil and bend inward, forming a staggered "B" shape, permanently suturing the two tissue layers together. The stapler is then withdrawn from the body. With conventional staplers, after completion of the anastomosis, the staples deform to form a "B" shape to resist the forces caused by tissue expansion. However, this can lead to leakage at the anastomosis site.

[0003] One of the most serious complications after anastomosis is anastomotic leakage. Once anastomotic leakage occurs, intestinal contents leak into the abdomen, severely impacting the patient's health and potentially leading to complications such as sepsis. Repairing anastomotic leakage is extremely difficult, sometimes requiring 1-2 months, thus increasing the patient's hospital stay and incurring substantial additional nursing costs. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic anastomosis device that completely changes the design of traditional tubular anastomosis devices, minimizing the risk of anastomotic leakage. Annular carriers are placed at both ends of the intestine to be anastomosed. The two annular carriers interlock magnetically. After the intestine heals, the two annular carriers adhere to each other and detach from the intestine, automatically being excreted with the feces.

[0005] This utility model is achieved through the following technical solution: a magnetic stapler, which includes two annular carriers; each of the two annular carriers is provided with an annular inner cavity, and the annular inner cavity is provided with a magnetic ring; the annular carriers are provided with multiple sets of staple holes on the annular surface, and the wall surface of the annular surface is made of a flexible material, and the staples are interference-fitted into the staple holes;

[0006] When the mating surfaces of the two annular carriers approach each other, the two magnetic rings attract each other, compress the flexible material, and push the anastomosis pins, thereby achieving anastomosis.

[0007] Compared with previous technologies, the beneficial effects of this utility model are as follows:

[0008] 1. Two ring-shaped carriers connect the two ends of the intestine together by magnetically pushing the anastomotic staples. The two ring-shaped carriers will continuously apply pressure to both sides of the intestinal connection through magnetic force, so as to avoid the anastomosis from being subjected to external force during the healing process and thus avoid the occurrence of anastomotic leakage.

[0009] 2. The interference fit between the staple and the exit hole ensures the stability and firmness of the staple. During tissue anastomosis, the interference creates a certain resistance, allowing the staple to be slowly pushed out by the magnetic ring and pass through the tissue.

[0010] 3. The guide ribs and guide grooves work together to prevent the two magnetic rings from swaying when they attract each other, making the matching process more reliable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 for Figure 1 Exploded view;

[0013] Figure 3 This is a magnified view of the pin hole on the silicone sleeve's mating surface.

[0014] Figure 4 A schematic diagram of the concave and convex surfaces of the silicone sleeve's mating surface;

[0015] Figure 5 This is a diagram showing the effect after the staples at corresponding positions on the two annular carriers are aligned.

[0016] Labeling explanation: 1. Ring carrier, 11. Silicone sleeve, 12. Silicone base, 13. Inner ring groove, 131. Guide rib, 14. Magnetic ring, 141. Guide groove, 15. Nail outlet hole, 16. Concave and convex surface, 2. Anastomotic staple. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description:

[0018] like Figures 1 to 4 As shown, a magnetic stapler includes two annular carriers; each of the two annular carriers has an annular inner cavity, and the annular inner cavity has a magnetic ring 14; the annular carriers have multiple sets of staple holes 15 on the annular surface, and the wall surface of the annular surface is made of a flexible material, and the staples 2 are interference-fitted into the staple holes 15.

[0019] When the mating surfaces of the two annular carriers approach each other, the two magnetic rings attract each other, compress the flexible material, and push the anastomosis pins, thereby achieving anastomosis.

[0020] This invention uses two annular carriers to magnetically connect the two ends of the intestine. Simultaneously, the two magnetic rings attract each other, pushing the anastomotic staples in the inner ring grooves out of their exit holes and through the tissue, thus anastomosing the two ends of the intestine. The two annular carriers continuously apply pressure to both sides of the intestinal connection, preventing the anastomosis from rupturing due to external forces during the healing process, thereby avoiding anastomotic leakage. Once the intestine has healed, the annular carriers detach from the intestine and are subsequently excreted with feces.

[0021] Here, the interference fit of the staples in the exit hole makes them more stable and secure. This allows the staples to be slowly pushed out of the tissue by the magnetic ring and through the tissue during tissue anastomosis due to the resistance generated by the interference fit.

[0022] Generally, the flexible material is silicone. Silicone is currently a cost-effective flexible material in the medical device field.

[0023] The annular carrier includes at least one silicone sleeve 11, and the side wall of the silicone sleeve away from the mating surface is provided with an inner annular groove 13, in which the magnetic ring 14 is placed.

[0024] Furthermore, the annular carrier also includes a silicone base plate 12, which is installed in the inner annular groove 13 to enclose the inner annular groove 13 and form an annular inner cavity.

[0025] Generally, the silicone sleeve 11 and the silicone base 12 are bonded together with adhesive. This technique is quite conventional, so it will not be described in detail.

[0026] The inner ring groove 13 is also provided with a guide rib 131 to guide the movement of the magnetic ring 14, and the magnetic ring 14 is provided with a guide groove 141 that cooperates with the guide rib.

[0027] This structure allows the magnetic ring to be attracted by the magnetic force of another magnetic ring under the guidance of the guide rib, so that the two magnetic rings move towards each other; thereby completing the action of pushing the anastomosis staple out of the inner ring groove and through the tissue.

[0028] The guide ribs and guide grooves work together to prevent the two magnetic rings from swaying when they attract each other, making the matching process more reliable. The number of guide ribs can be arbitrary; this invention currently has two, and correspondingly, two guide grooves.

[0029] Any set of nail outlet holes 15 has three nail outlet holes 15 from the outside to the inside, and each nail outlet hole 15 is equipped with a matching nail. The number of nail outlet holes and matching nails in any set can be redesigned according to requirements and is not limited to the three nail outlet hole design in the illustration.

[0030] like Figure 5As shown: In two annular carriers, any pin outlet holes on one annular carrier and any pin outlet holes on the other annular carrier are staggered when the two annular carriers are joined together. Specifically, taking three pin outlet holes as an example, since the pin outlet holes 15 are arranged from the outside to the inside, assuming that the distances from the three pin outlet holes 15 on one annular carrier to the center of the annular carrier are 10 units, 12 units, and 14 units respectively, then the distances from the three pin outlet holes 15 in the corresponding area on the other annular carrier to the center of the annular carrier are 11 units, 13 units, and 15 units respectively; this results in the pins being staggered, forming a staggered arrangement after joining, as shown in the image. Figure 5 The layout presented in the middle.

[0031] The mating surfaces of the two silicone sleeves 11 are staggered and complementary concave-convex surfaces 16, which enable the two magnetic ring sleeves 1 to achieve self-fitting alignment. The concave-convex surfaces 16 are complementary designs, which can increase the sliding resistance after the two annular carriers are in contact with each other, prevent the tissue from slipping off during the anastomosis process, and ensure the safety and effectiveness of the anastomosis process.

[0032] Although this utility model has been illustrated and described using specific embodiments and alternative methods, it should be understood that various changes and modifications are permitted as long as they do not depart from the spirit and scope of this utility model. Therefore, it should be understood that this utility model is not limited in any sense except by the appended claims and their equivalents.

Claims

1. A magnetic stapler, characterized in that: It includes two annular carriers (1); each of the two annular carriers (1) is provided with an annular inner cavity, and the annular inner cavity is provided with a magnetic ring (14); the annular carrier (1) has multiple sets of nail outlet holes (15) on its mating surface, and the side wall where the mating surface is located is made of flexible material, and the mating nail (2) is interference-fitted into the nail outlet hole (15); When the mating surfaces of the two annular carriers (1) approach each other, the two magnetic rings (14) attract each other and squeeze the flexible material and push the mating nails, thereby achieving mating.

2. The magnetic stapler according to claim 1, characterized in that: The flexible material is silicone.

3. A magnetic stapler according to claim 2, characterized in that: The annular carrier (1) includes at least one silicone sleeve (11), and the side wall of the silicone sleeve away from the mating surface is provided with an inner annular groove (13), and the magnetic ring (14) is placed in the inner annular groove (13).

4. A magnetic stapler according to claim 3, characterized in that: The annular carrier (1) also includes a silicone base plate (12), which is installed in the inner annular groove (13) to enclose the inner annular groove (13) and form an annular inner cavity.

5. A magnetic stapler according to claim 4, characterized in that: The silicone sleeve (11) and the silicone base (12) are bonded together with adhesive.

6. A magnetic stapler according to claim 3, characterized in that: The inner ring groove (13) is also provided with a guide rib (131) to guide the movement of the magnetic ring (14), and the magnetic ring (14) is provided with a guide groove (141) that cooperates with the guide rib.

7. A magnetic stapler according to claim 1, characterized in that: Any set of nail holes (15) has three matching holes from the outside to the inside.

8. A magnetic stapler according to claim 1, characterized in that: In the two annular carriers (1), when the two annular carriers (1) fit together, any nail outlet hole of one annular carrier (1) and any nail outlet hole in the corresponding area of ​​the other annular carrier (1) are misaligned.

9. A magnetic stapler according to claim 1, characterized in that: The mating surfaces of the two silicone sleeves (11) are irregularly shaped and complementary concave-convex surfaces (16), which enable the two magnetic ring sleeves to achieve self-fitting alignment.

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