A magnetic anastomotic ring

Abstract

A magnetic anastomotic ring comprises: a magnetic ring (1), an outer shell (2) and an inner fixing ring (3), wherein the outer shell (2) can accommodate the magnetic ring (1), and the inner fixing ring (3) can fix the inverted intestinal tissue (7); the outer shell (2) can be combined to enclose an annular space, and the magnetic ring (1) and the intestinal tissue (7) can be accommodated in the annular space. The magnetic anastomotic ring of the present invention can significantly shorten the anastomosis time and simplify the operation of the operation. It is particularly suitable for scenes such as rapid treatment of war trauma and laparoscopic intestinal anastomosis. It uses the magnetic squeezing principle for anastomosis, improves the anastomosis quality, shortens the anastomosis time, and improves the patient's prognosis.

Description

Technical Field

[0001] The invention relates to a medical device, in particular to a magnetic anastomotic ring. Background Art

[0002] Magnetic compression anastomosis (MCA): The magnetic attraction between two or more magnets (or several magnets and several paramagnetic materials) is used to produce mechanical compression on tissues, leading to ischemic necrosis. The adjacent tissues of the anastomosis gradually heal to achieve organ reconnection, tissue compression closure, and flow control of lumen contents. Finally, the magnets are excreted from the body with the stool, thus achieving rapid anastomosis. The principle is to use the strong attraction between magnetic rings made of magnetic materials to produce continuous, non-penetrating mechanical compression that gradually increases as the spacing decreases.

[0003] At present, magnetic compression anastomosis technology is mainly used in various open surgeries and minimally invasive surgeries such as postoperative biliary stricture treatment, coronary artery bypass grafting, esophageal stricture treatment, vascular anastomosis, gastrointestinal anastomosis, etc. Compared with traditional titanium staplers, magnetic ring anastomosis technology does not cause bleeding during surgery, the magnetic ring falls off a few days after surgery, and no foreign matter is left at the wound healing site. At the same time, the wound healing is more ideal and it is not easy to get infected after surgery, making it an ideal choice for gastrointestinal and other surgeries.

[0004] At present, both at home and abroad, magnetic ring anastomosis technology and magnetic ring anastomosis devices are being researched, developed and designed. Patent 201010200289.3 is mainly aimed at gastrointestinal anastomosis devices, which are suitable for end-to-end anastomosis of intestines and blood vessels. Patent 201210000963 improves the magnetic ring, and the magnetic ring can be easily discharged from the body through deformation. Patents 201510382495.1 and 201510382496.8 respectively use outer shell and micro-pin technology to prevent the two magnetic rings from being separated by squeezing. They can be well applied to foreskin squeezing and cutting, but the processing difficulty is relatively large, and the solution still needs to be optimized and improved.

[0005] Patent 201310379871.4 is a magnetic anastomosis device suitable for field surgical digestive tract reconstruction, and proposes a magnetic anastomosis device suitable for field surgical digestive tract reconstruction (see Figure 1 , Figure 3 , Fig.10 , Fig.11 ), consists of a mother body and a daughter body. This technology fixes the intestine by purse string contraction. The process is complicated and can easily cause stenosis of the intestinal cavity and incomplete closure of the anastomosis, leading to intestinal fistula. Summary of the invention

[0006] In view of the problems in the prior art, the present invention proposes a magnetic anastomotic ring, comprising: a magnetic anastomotic ring, characterized in that it comprises: a magnetic ring, an outer shell and an inner fixing ring, wherein the outer shell can wrap and accommodate the magnetic ring; the inner fixing ring fixes the inverted intestinal tissue on the outer shell.

[0007] Optionally, the internal fixation ring has a notch to generate elasticity, which is beneficial for fixation of the severed intestinal tissue.

[0008] Optionally, the outer shell is made of magnetic shielding material, and an outer annular protrusion is provided on the outer side of the outer shell to prevent the multiple mating anastomotic rings from attracting each other.

[0009] Optionally, the shell is made of magnetic shielding material, and is open toward the anastomotic opening and closed in other directions.

[0010] Optionally, the inner side of the shell has an inner annular protrusion, which can be combined with the inner fixing ring to limit the position and fix the inverted intestinal tissue on the shell.

[0011] Optionally, the housing has a magnetic ring cavity for accommodating a magnetic ring.

[0012] Optionally, the inner fixing ring has a retaining ring to prevent slipping.

[0013] Optionally, the inner fixing ring has a blade in the contact direction with the inner annular protrusion of the outer shell, so as to cut off the redundant intestinal tissue while fixing the inverted intestinal tissue.

[0014] Optionally, the paired shells can be combined to enclose an annular space, and the internal fixation ring and intestinal tissue can be accommodated in the annular space.

[0015] Optionally, the magnetic ring, the outer shell and the inner fixing ring are made of absorbable materials.

[0016] The magnetic anastomotic ring of the present invention can significantly shorten the anastomosis time and simplify the surgical operation. It is particularly suitable for rapid treatment of war trauma, laparoscopic intestinal anastomosis and other scenarios. It utilizes the magnetic compression principle to heal, improve the healing quality, shorten the healing time, and improve the patient's prognosis.

[0017] The magnetic anastomotic ring of the present invention can significantly shorten the anastomosis time and simplify the surgical operation. It is particularly suitable for rapid treatment of war trauma, laparoscopic intestinal anastomosis and other scenarios. It uses the magnetic compression principle for anastomosis, improves the anastomosis quality, shortens the anastomosis time, and improves the patient's prognosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded schematic diagram of the first form of the magnetic anastomotic ring of the present invention;

[0019] Figure 2 for Figure 1 The assembly diagram of the first form of the magnetic anastomotic ring is shown;

[0020] Figure 3 for Figure 1 The assembly diagram of the first form of the magnetic anastomotic ring is shown;

[0021] Figure 4 This is a structural diagram of the annular protrusion inside the shell of the first form of the magnetic anastomotic ring;

[0022] Figure 5 A front view of a housing of a first form of a magnetic anastomotic ring;

[0023] Figure 6 This is a structural diagram of the first type of magnetic anastomotic ring internal fixation ring;

[0024] Figure 7 This is the structure diagram of the first type of magnetic anastomotic ring;

[0025] Figure 8 It is a cross-sectional view of the first form of the magnetic anastomotic ring;

[0026] Fig. 9 It is a cross-sectional schematic diagram of the practical application of the first form of the magnetic anastomotic ring;

[0027] Fig.10 This is an exploded schematic diagram of the second form of the magnetic anastomotic ring;

[0028] Fig.11 This is an exploded schematic diagram of the second form of the magnetic anastomotic ring;

[0029] Fig.12 This is an assembly diagram of the second form of the magnetic anastomotic ring;

[0030] Fig.13 is an assembly cross-sectional view of the second form of the magnetic anastomotic ring;

[0031] Fig.14 It is a schematic diagram of the application of the second form of the magnetic anastomotic ring;

[0032] Fig.15 This is a structural diagram of an internal fixation ring of the second form of a magnetic anastomotic ring;

[0033] Fig.16 This is a structural diagram of the internal fixation ring of the third form of the magnetic anastomotic ring;

[0034] Fig.17 This is an exploded view of the structure of the third form of the magnetic anastomotic ring;

[0035] Fig.18 It is a structural cross-sectional diagram of the third form of the magnetic anastomotic ring;

[0036] Fig.19 Schematic diagram of the application of the third form of magnetic anastomotic ring.

[0037] Reference numerals

[0038] 1-magnetic ring, 2-outer shell, 3-inner fixing ring, 4-inner annular protrusion, 5-magnetic ring cavity, 6-retaining ring, 7-intestinal tissue, 8-anastomosis, 9-notch, 10-blade, 11-outer annular protrusion. DETAILED DESCRIPTION

[0039] Embodiments of the present invention will be described below with reference to the accompanying drawings, wherein like components are denoted by like reference numerals.

[0040] First embodiment

[0041] like Figure 1-Figure 3 As shown, the basic structure of the magnetic anastomotic ring of the present invention includes a magnetic ring 1, an outer shell 2, and an inner fixing ring 3. The magnetic anastomotic rings of this device are usually used in pairs. The outer shell 2 can wrap and accommodate the magnetic ring 1 to form protection and wrapping, and increase strength; the inner fixing ring 3 fixes the inverted tissue on the outer shell 2 to prevent slipping. The inner annular protrusion 4 on the inner side of the outer shell 2 limits the inner fixing ring 3 to prevent it from slipping out.

[0042] The magnetic ring 1 is made of magnetic materials such as neodymium iron boron and meets the medical environment.

[0043] The shell 2 is made of metal or polymer material. Preferably, the shell 2 is a magnetic shielding material that meets the medical environment. The shell 2 is open toward the anastomotic opening and closed in other directions, shielding and concentrating the magnetic force lines near the anastomotic opening to enhance the magnetic squeezing force.

[0044] The inner fixing ring 3 is made of metal or polymer material and meets the medical environment.

[0045] like Figure 2 As shown, the housing 2 can wrap and contain the magnetic ring 1, and can be a closed type that completely wraps it, or has a magnetic ring cavity 5 that is open on the anastomotic side (see Figure 5 ).

[0046] like Figure 4 As shown, the inner side of the housing 2 is provided with an inner annular protrusion 4, which can limit the inner fixing ring 3 to prevent it from falling out.

[0047] like Figure 5 As shown, the housing 2 has a magnetic ring cavity 5 for accommodating the magnetic ring 1. The magnetic ring cavity 5 can be an open structure, and a pair of housings 2 can be combined to form an annular space; the magnetic ring cavity 5 can also be a closed structure.

[0048] like Figure 6As shown, the inner fixing ring 3 includes a retaining ring 6, which can match the inner annular protrusion 4 on the inner side of the shell 2 to limit the position of the inner fixing ring 3. The inner fixing ring 3 has a blade 10 facing the anastomotic opening, which fixes the inverted intestinal tissue and cuts off the excess intestinal tissue 7 to prevent the internal stenosis of the anastomotic ring.

[0049] like Figure 7 As shown, the magnetic ring 1 is an annular structure, coated with a biocompatible coating, preferably a titanium coating.

[0050] like Figure 8 As shown, the magnetic anastomotic rings of the device are usually used in pairs. The magnetic ring 1 is wrapped by the outer shell 2 to form protection and wrapping to increase strength; the inner fixing ring 3 fixes the inverted tissue on the outer shell 2 to prevent slipping. The inner annular protrusion 4 on the inner side of the outer shell 2 limits the inner fixing ring 3 to prevent it from slipping out.

[0051] like Fig. 9 As shown, the magnetic anastomotic rings of the device are usually used in pairs. The inner fixing ring 3 fixes the inverted intestinal tissue 7 on the outer shell 2 to prevent slipping. The inner annular protrusion 4 on the inner side of the outer shell 2 limits the inner fixing ring 3 to prevent it from slipping out. The inner fixing ring 3 has a blade 10 facing the anastomotic opening, which fixes the inverted intestinal tissue and cuts off the excess intestinal tissue 7 to prevent the inside of the anastomotic ring from narrowing. Driven by the magnetic force of the paired magnetic rings 1, the device continuously squeezes the tissues on both sides of the anastomotic opening 8 to form a squeezing anastomosis.

[0052] Second embodiment

[0053] The second implementation is improved on the basis of the first implementation. Its basic structure is as follows: Figure 10-11 The characteristic of this embodiment is that the inner fixing ring 3 has a notch 9, and the elasticity and stretchability are improved compared with the first embodiment.

[0054] like Figure 10-11 As shown, the basic structure of the second embodiment includes a magnetic ring 1, a housing 2, and an inner fixed ring 3. The inner fixed ring 3 has a notch 9, and the elasticity and stretchability are improved compared with the first embodiment.

[0055] like Figure 10-11 As shown, the magnetic anastomotic rings of the device are usually used in pairs. The outer shell 2 can wrap and accommodate the magnetic ring 1 to form protection and wrapping to increase strength; the inner fixing ring 3 fixes the inverted tissue on the outer shell 2 to prevent slipping. The inner annular protrusion 4 on the inner side of the outer shell 2 limits the inner fixing ring 3 to prevent it from slipping out. The outer shell 2 can wrap and accommodate the magnetic ring 1, which can be a closed and completely wrapped, or a magnetic ring cavity 5 open on the anastomotic side. The magnetic ring 1 is a ring structure.

[0056] The magnetic ring 1 is made of magnetic material such as neodymium iron boron, etc., and is coated with a biocompatible coating, preferably a titanium coating, to meet the medical environment.

[0057] The shell 2 is made of metal or polymer material. Preferably, the shell 2 is a magnetic shielding material that meets the medical environment. The shell 2 is open toward the anastomotic opening and closed in other directions, shielding and concentrating the magnetic force lines near the anastomotic opening to enhance the magnetic squeezing force.

[0058] The inner fixing ring 3 is made of metal or polymer material and meets the medical environment.

[0059] like Fig.12 As shown, after the paired anastomotic rings are matched by magnetic force, the outer shell 2 completely wraps the magnetic ring 1. However, after the paired outer shells 2 are matched, there is leakage of magnetic lines of force at the matching point. The outer annular protrusion 11 on the outer side of the outer shell is used to deal with the leakage of magnetic lines of force that causes multiple sets of paired anastomotic rings to attract each other.

[0060] like Fig.13 As shown, the inner side of the housing 2 is provided with an inner annular protrusion 4, which can be combined with the retaining ring 6 of the inner fixing ring 3 to limit the position and prevent slipping.

[0061] like Fig.14 As shown, the magnetic anastomotic rings of the device are usually used in pairs. The inner fixing ring 3 fixes the inverted intestinal tissue 7 on the outer shell 2 to prevent slipping. The inner annular protrusion 4 on the inner side of the outer shell 2 limits the inner fixing ring 3 to prevent it from slipping out. Driven by the magnetic force of the paired magnetic rings 1, the device continuously squeezes the tissues on both sides of the anastomosis to form a squeeze-type anastomosis. The outer annular protrusion 11 on the outer side of the outer shell is used to deal with the leakage of magnetic lines that causes multiple sets of paired anastomotic rings to attract each other.

[0062] like Fig.15 As shown, the inner fixed ring 3 includes a retaining ring 6 and has a notch 9. The elasticity and stretchability are improved compared with the first embodiment.

[0063] Third embodiment

[0064] The third implementation method is improved on the basis of the first implementation method. Its basic structure is as follows: Figure 16-17 The inner fixing ring 3 has a notch 9, and the elasticity and scalability are improved compared with the first embodiment, which is more conducive to the fixation of the intestinal tissue at the end. The inner fixing ring 3 does not have a retaining ring 6 structure, and correspondingly, the inner annular protrusion 4 on the inner side of the outer shell 2 also matches the inner fixing ring 3.

[0065] The magnetic ring 1 is made of magnetic material such as neodymium iron boron, etc., and is coated with a biocompatible coating, preferably a titanium coating, to meet the medical environment.

[0066] The shell 2 is made of metal or polymer material. Preferably, the shell 2 is a magnetic shielding material that meets the medical environment. The shell 2 is open toward the anastomotic opening and closed in other directions, shielding and concentrating the magnetic force lines near the anastomotic opening to enhance the magnetic squeezing force.

[0067] The inner fixing ring 3 is made of metal or polymer material and meets the medical environment.

[0068] When using, Figure 18-Figure 19 As shown, the outer shell 2 can wrap and accommodate the magnetic ring 1, forming protection and wrapping to increase strength; the inner fixing ring 3 fixes the inverted intestinal tissue 7 on the outer shell 2 to prevent slipping. The inner annular protrusion 4 on the inner side of the outer shell 2 limits the inner fixing ring 3 to prevent it from slipping out. The outer shell 2 can wrap and accommodate the magnetic ring 1, which can be a closed and completely wrapped, or a magnetic ring cavity 5 open on the anastomotic side. The magnetic ring 1 is a ring structure.

[0069] like Figure 18-Figure 19 As shown, the magnetic anastomotic rings of the device are usually used in pairs. The inner fixing ring 3 fixes the inverted intestinal tissue 7 on the outer shell 2 to prevent slipping. The inner annular protrusion 4 on the inner side of the outer shell 2 limits the inner fixing ring 3 to prevent it from slipping out. Driven by the magnetic force of the paired magnetic rings 1, the device continuously squeezes the tissues on both sides of the anastomotic opening to form a squeeze-type anastomosis.

[0070] The above schematically describes the present invention and its embodiments, which are not restrictive. The drawings show only several embodiments of the present invention, and the actual structure is not limited thereto, and the embodiments can be combined. If a person skilled in the art is inspired by this, without departing from the purpose of the invention, other forms of structure, transmission, installation and connection methods, and structures and embodiments similar to the technical solution without creative design should all fall within the scope of protection of the present invention.

Claims

1. A magnetic anastomotic ring, characterized in that: include: A magnetic ring (1), a housing (2) and an inner fixed ring (3), wherein the housing (2) has a magnetic ring cavity (5) for accommodating the magnetic ring (1); The internal fixing ring (3) has a notch (9) to generate elasticity, so as to facilitate the fixation of the intestinal tissue at the cut end. The internal fixing ring (3) has a retaining ring (6) to prevent slipping. The inner side of the outer shell (2) is provided with an inner annular protrusion (4) which can be combined with the inner fixing ring (3) to limit the position and fix the inverted intestinal tissue (7) on the outer shell (2). The outer side of the housing (2) is provided with an outer annular protrusion (11) for preventing the multiple matching anastomotic rings from attracting each other. The inner fixing ring (3) is provided with a blade (10) in the contact direction with the inner annular protrusion (4) of the outer shell (2), which can fix the inverted intestinal tissue (7) and cut off the redundant intestinal tissue (7) at the same time.

2. The magnetic anastomotic ring according to claim 1, characterized in that: The outer shell (2) is made of magnetic shielding material, and an outer ring-shaped protrusion (11) is provided on the outer side of the outer shell (2) to prevent the multiple matching anastomotic rings from attracting each other.

3. The magnetic anastomotic ring according to claim 1, characterized in that: The shell (2) is made of magnetic shielding material, and is open toward the anastomotic opening and closed in other directions.

4. The magnetic anastomotic ring according to claim 1, characterized in that: The paired outer shells (2) can be combined to enclose an annular space, and the inner fixing ring (3) and the intestinal tissue (7) can be accommodated in the annular space.

5. The magnetic anastomotic ring according to claim 1, characterized in that: The magnetic ring (1), the outer shell (2) and the inner fixing ring (3) are made of absorbable material.

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