WO2017101665A1

WO2017101665A1 - Magnetic anastomosis ring

Info

Publication number: WO2017101665A1
Application number: PCT/CN2016/107413
Authority: WO
Inventors: 史源
Original assignee: 史源
Priority date: 2015-12-18
Filing date: 2016-11-28
Publication date: 2017-06-22
Also published as: CN105615953B; CN105615953A

Abstract

A magnetic anastomosis ring comprises an upper magnetic ring (2), a lower magnetic ring (3), an upper stop ring (1), and a lower stop ring (4). The end surface of the lower magnetic ring (3) can be adsorbed together with the end surface of the upper magnetic ring (2). The upper stop ring (1) and the lower stop ring (4) can be combined to define an annular space, and the lower magnetic ring (3) and the upper magnetic ring (2) can be accommodated in the annular space. The magnetic anastomosis ring can simplify operations in a surgery, can reduce pain of a patient, and can shorten the recovery time of the patient.

Description

Magnetic anastomotic ring

Technical field

The invention relates to a medical device, in particular to a magnetic anastomosis ring.

Background technique

The principle of magnetic ring press-flange is to use the strong attraction between the magnetic rings made of high-magnetic materials to produce a continuous, non-penetrating, mechanically compressive force that gradually increases with decreasing pitch. Magnetic ring circumcision, using the same or similar shape of the two magnetic rings across the foreskin, the automatic matching of the characteristics of the penis in the axial direction, the compression of the foreskin between the two magnetic rings, and magnetic The inner foreskin tissue of the annulus is automatically healed. At present, magnetic pressing technology is mainly used in postoperative biliary stricture treatment, coronary artery bypass grafting, esophageal stricture treatment, vascular anastomosis, gastrointestinal anastomosis and other traditional surgery and laparoscopic surgery. Compared with the traditional titanium staple stapler, the magnetic ring anastomosis technique does not bleed during the operation. The magnetic ring falls off after a few days after surgery, and no foreign matter remains in the wound healing site. At the same time, the wound healing is more ideal, and it is not easy to be infected after surgery. Ideal for surgery such as anorectal, foreskin and gastrointestinal.

At present, the research and development of magnetic ring anastomosis technology and magnetic ring anastomosis device are carried out at home and abroad. Patent 201010200289.3 is mainly for the development of gastrointestinal stapler, which is suitable for end-to-end anastomosis of the intestines and blood vessels. Patent 201210000963 can improve the magnetic ring and facilitate the removal of the magnetic ring through the deformation of the magnetic ring. The patents 201510382495.1 and 201510382496.8 respectively use the technology of the outer casing and the micro-nail to prevent the two magnetic rings from being detached, which can be applied to the forging press cutting, but the processing difficulty is relatively large, and the solution still needs to be optimized and improved.

Surgery such as foreskin or hemorrhoids can be done by magnetic pressure magnetic anastomosis, which will greatly simplify the operation of the operation, reduce the patient's pain and save the patient's recovery time. For traditional foreskin press or hemorrhoidectomy, the fundamental way to reduce the difficulty of surgery and improve the operational comfort is to develop a practical and practical anastomotic device. Improve the patient's surgical efficacy and increase the operability of the doctor, guarantee the package The skin compression anastomosis was successfully performed.

Summary of the invention

In view of the problems in the prior art, the present invention provides a magnetic anastomotic ring, comprising: an upper magnetic ring, a lower magnetic ring, an upper retaining ring and a lower retaining ring, wherein an end face of the lower magnetic ring can be coupled with the upper magnetic ring The end faces of the rings are attracted together; the upper and lower retaining rings can be combined to form an annular space in which the lower magnetic ring and the upper magnetic ring can be accommodated.

Further, the upper baffle has a first baffle, the lower baffle has a second baffle, the inner wall of the first baffle is provided with a thread, and the outer wall of the second baffle is provided with a thread, and the two threads can be screwed together The annular space is inside the first flap and the second flap.

Further, the upper baffle has a first baffle, the lower baffle has a second baffle, and the edge of the second baffle is provided with a buckle and a discontinuity groove, and the first baffle is provided with the The buckle corresponds to the engaged annular groove, and the annular space is inside the first flap and the second flap.

Further, the upper baffle has a first baffle, the lower baffle has a second baffle, the rim of the first baffle has a radial flange, and the second baffle has a radial convex The flanges can be snapped together, the annular space being outside the first flap and the second flap.

Further, the second flap is provided with a crack in the axial direction.

Further, the magnetic anastomotic ring further includes: a first U-shaped shell and a second U-shaped shell, wherein the first U-shaped shell and the second U-shaped shell are placed in the lower retaining ring, the first U-shaped The shell and the second U-shaped shell buckle are combined into a first cavity, the lower magnetic ring can be placed in the first cavity; and the third U-shaped shell and the fourth U-shaped shell, wherein the third U-shaped shell and the fourth The U-shaped shell is placed in the upper retaining ring, and the third U-shaped shell and the fourth U-shaped shell buckle are combined into a second cavity, and the upper magnetic ring can be placed in the second cavity.

Further, the magnetic anastomotic ring further includes: a vent hole disposed on a sidewall of the upper retaining ring.

Further, the magnetic anastomotic ring further includes: an observation window for observing the relative positions of the upper retaining ring and the lower retaining ring, the viewing window being disposed on the side wall of the upper retaining ring.

Further, the outer ring or the lower ring has a mark on the outer circumference.

Further, the magnetic anastomotic ring further includes: an auxiliary hole for assisting in tightening or loosening the combined upper and lower retaining rings.

Further, the auxiliary hole is disposed on a bottom surface of the lower retaining ring or a side wall of the upper retaining ring.

Further, the magnetic anastomosis ring further includes: an annular groove for accommodating excess tissue, the annular groove being located in a sidewall of the lower retaining ring.

Further, the magnetic anastomosis ring further includes: a flushing hole disposed on a bottom surface of the lower retaining ring and communicating with the annular groove.

Further, the lower magnetic ring is placed in the lower retaining ring and the two are integrally formed, or the upper magnetic ring is placed in the upper retaining ring and the two are integrally formed.

Further, the upper magnetic ring and the lower magnetic ring have an elliptical shape or a pear shape.

Further, the surface on which the upper magnetic ring and the lower magnetic ring are attracted is a tapered arc surface, and the surface of the surface on which the upper magnetic ring and the lower magnetic ring are attracted has a knurled or interrupted groove.

Further, when the upper retaining ring and the lower retaining ring are combined, the edges of the upper retaining ring and the lower retaining ring can cut the tissue structure.

The invention has the advantages that the operation of the surgery is simplified, the pain of the patient is reduced, and the recovery time of the patient is saved.

DRAWINGS

1 is a schematic exploded view of an embodiment of a magnetic anastomosis ring of the present invention;

Figure 2 is a perspective view of the assembled magnetic anvil ring of Figure 1;

3 is a schematic view showing an application manner of the upper magnetic ring and the lower magnetic ring in FIG. 1;

4 is a schematic view showing an application manner of the magnetic anastomosis ring shown in FIG. 1;

Figure 5 is a cross-sectional view showing another embodiment of the magnetic anastomosis ring of the present invention;

Figure 6 is a cross-sectional view showing still another embodiment of the magnetic anastomosis ring of the present invention;

Figure 7 is a perspective view of still another embodiment of the magnetic anastomosis ring of the present invention;

Figure 8 is a perspective view of still another embodiment of the magnetic anastomosis ring of the present invention;

Figure 9 is a cross-sectional view showing still another embodiment of the magnetic anastomosis ring of the present invention;

Figure 10 is a perspective view of still another embodiment of the magnetic anastomosis ring of the present invention;

Figure 11 is a perspective view of still another embodiment of the magnetic anastomosis ring of the present invention;

Figure 12 is a cross-sectional view of the magnetic anastomotic ring shown in Figure 11;

Figure 13 is a schematic exploded view of still another embodiment of the magnetic anastomosis ring of the present invention;

Figure 14 is a cross-sectional view of the magnetic anastomotic ring shown in Figure 13.

Reference numeral

1-Upper retaining ring 2-Upper magnetic ring 3-lower magnetic ring 4-lower retaining ring 5-tissue press surface

6-first flap 7-second flap 11-venting hole 12-observation window 13-ring groove

21-third U-shaped shell 22-fourth U-shaped shell 23-tissue press surface

31-First U-shaped shell 32-Second U-shaped shell 33-tissue press surface

41-auxiliary hole 42-annular groove 43-buckle 44-interrupted groove 45-flushing hole

detailed description

Embodiments of the invention are described below with reference to the drawings, in which like parts are designated by the same reference numerals.

First embodiment

As shown in FIG. 1, the magnetic anastomotic ring of the present invention includes an upper magnetic ring 2, a lower magnetic ring 3, an upper retaining ring 1 and a lower retaining ring 4.

The upper magnetic ring 2 and the lower magnetic ring 3 are made of a magnetic material such as neodymium iron boron or the like and satisfy the medical environment. The two end faces of the upper magnetic ring 2 and the lower magnetic ring 3 can be attracted together. Preferably, in order to increase the frictional force of the adsorption, the two adsorbable end faces of the upper magnetic ring 2 and the lower magnetic ring 3 are subjected to sanding or knurling, etc., as shown in FIG. 1, the upper end surface of the lower magnetic ring 3 is frosted. Or knurling or the like to form a tissue press surface 5. More preferably, the surface of the upper magnetic ring 2 and the lower magnetic ring 3 are tapered, and the surface has knurling and discontinuous grooves for increasing friction.

When in use, as shown in FIG. 2, the lower magnetic ring 3 is first placed on the outer side of the penis, and the foreskin valgus covers the outer circumference of the lower magnetic ring 3, and the amount of the coating depends on the operation needs. Then, the upper magnetic ring 2 is placed over the penis, and the lower end surface of the upper magnetic ring 2 and the upper end surface of the lower magnetic ring 3 are attracted together, thereby sandwiching the foreskin between the two magnetic rings. The circumcision can then be used to remove the redundant foreskin outside the magnetic annulus. After a few days, when the resection surface heals, the magnetic ring automatically falls off. Although the upper magnetic ring 2 and the lower magnetic ring 3 can be magnetically attracted together, this method has disadvantages: the magnetic force of the magnetic ring cannot be precisely adjusted, the magnetic force is too large to be prematurely detached, the magnetic force is too small to be easily disengaged, and the magnetic field is postoperatively The ring 2 and the lower magnetic ring 3 may slip off, but at this time the wound has not healed, and the falling magnetic ring causes discomfort to the patient. And the wound is exposed and easy to infect.

To this end, the invention proposes to add an upper baffle 1 and a lower baffle 4, the upper baffle 1 having a first flap 6, the first baffle 6 being the vertical portion of the upper baffle 1 (in the direction of Figure 1 Standard), the lower retaining ring 4 has a second flap 7, which is the vertical portion of the lower retaining ring 4 (standard in the direction of Figure 1). The lower retaining ring 4 receives the lower magnetic ring 3, and more specifically, the lower magnetic ring 3 is placed inside the second flap 7 of the lower retaining ring 4. After the lower magnetic ring 3 and the upper magnetic ring 2 are adsorbed, they can be installed in the annular space formed by the lower retaining ring 4 and the upper retaining ring 1 to prevent the lower magnetic ring 3 and the upper magnetic ring 2 from being disengaged. The upper retaining ring 1 and the lower retaining ring 4 are tightly coupled, and may be combined with the outer wall of the second baffle 7 of the lower baffle 4 and the inner wall of the first baffle 6 of the upper baffle 1 with the upper retaining ring 1 The first flap 6 is threadedly coupled to the outer edge of the second flap 7 of the lower retaining ring 4. The amount by which the lower retaining ring 4 is screwed into the upper retaining ring 1 can be adjusted to adjust the spacing between the upper magnetic ring 2 and the lower magnetic ring 3, thereby adjusting the magnitude of the magnetic force. Figure 2 shows a perspective view of the assembled magnetic anastomotic ring.

In use, as shown in FIG. 3-4, the lower retaining ring 4 and the lower retaining ring 3 first pass through the penis, and then the foreskin to be excised is everted, and the upper retaining ring 2 is placed in the foreskin and adsorbed with the lower retaining ring 3 together. The foreskin to be removed is clamped in the end faces of the lower retaining ring 3 and the upper retaining ring 2, and after the redundant foreskin is removed, the upper retaining ring 1 is inserted into the penis and tightly coupled with the lower retaining ring 4. In this way, the foreskin wound is covered by the upper retaining ring 1 and the lower retaining ring 4, and is not exposed to prevent wound infection. Moreover, the upper retaining ring 1 and the lower retaining ring 4 may be made of a material such as plastic or metal, and the entire anastomotic ring can be fastened to the penis by screwing the upper retaining ring 1 to prevent falling off. At the same time, by adjusting the amount of the lower retaining ring 4 screwed into the threaded upper retaining ring 1, a certain non-magnetic pressing force can be provided at the beginning of the tissue pressing. When the tissue pressing is necrotic, the thickness of the tissue is reduced, the magnetic pressing force is increased, and the non-magnetic The pressing force is reduced or disappeared, so that the pressing force of the matching magnetic ring is substantially unchanged throughout the pressing process, which is beneficial to the healing of the tissue.

In an embodiment, the edges of the first flap 6 of the upper retaining ring 1 and the second flap 7 of the lower retaining ring 4 may be sharp, and may be cut when the upper retaining ring 1 is combined with the lower retaining ring 4 organization. Therefore, in use, as shown in FIG. 4, the lower retaining ring 4 and the lower retaining ring 3 first pass through the penis, and then the foreskin to be resected is everted, and the upper retaining ring 2 is placed in the foreskin and adsorbed to the lower retaining ring 3 together. The wrapper is sleeved into the upper retaining ring 1. During the process of combining the upper retaining ring 1 and the lower retaining ring 4, the upper retaining ring 1 realizes cutting of the redundant wrapping or other tissue, so that no manual cutting is required. Simplified operation.

Preferably, in order to reduce the weight, the upper magnetic ring 2 and the lower magnetic ring 3 are hollow.

Preferably, the shape of the upper magnetic ring 2 and the lower magnetic ring 3 is non-circular, for example, a pear shape, an elliptical shape, or the like.

Preferably, the lower magnetic ring 3 and the lower retaining ring 4 may be integrated. Alternatively, the lower retaining ring 4 is a magnetic ring that can be fitted to the upper magnetic ring 2, thereby omitting the lower magnetic ring 3.

Second embodiment

In another embodiment, an improvement is made based on the embodiment of FIG. 1. As shown in FIG. 5, the magnetic anastomotic ring of the present invention further includes: a first U-shaped shell 31 and a second U-shaped shell 32. The first U-shaped shell 31 and the second U-shaped shell 32 are placed in the lower retaining ring 4, and the first U-shaped shell 31 and the second U-shaped shell 32 are buckled into a cavity, and the lower magnetic ring 3 can be placed in the cavity . Preferably, the mating faces of the first U-shaped shell 31 and the second U-shaped shell 32 are sealed or welded by a material such as medical glue. Preferably, the tissue press surface 33 of the second U-shaped shell 32 has teeth or knurls to facilitate tight compression of the pressed tissue and prevent tissue slippage. The tissue press surface 33 is also the upper end surface of the lower magnetic ring 3, and is also the matching surface of the lower magnetic ring 3 and the upper magnetic ring 2.

Preferably, the magnetic anastomotic ring of the present invention further comprises: a third U-shaped shell 21 and a fourth U-shaped shell 22. The third U-shaped shell 21 and the fourth U-shaped shell 22 are placed in the upper retaining ring 1, and the third U-shaped shell 21 and the fourth U-shaped shell 22 are buckled into a cavity, and the upper magnetic ring 2 can be placed in the cavity in. Preferably, the mating faces of the third U-shaped shell 21 and the fourth U-shaped shell 22 are sealed by a material such as medical glue or sealed by welding. Preferably, the tissue press faces 23 of the third U-shaped shell 21 and the fourth U-shaped shell 22 are provided with teeth or knurls, which facilitates tight compression of the pressed tissue and prevents the tissue from slipping off. The tissue press surface 23 is also the lower end surface of the upper magnetic ring 2, and is also the matching surface of the lower magnetic ring 3 and the upper magnetic ring 2.

Third embodiment

In still another embodiment, different from the embodiment shown in FIG. 5, the magnetic anastomosis ring of the present invention further includes a vent hole 11, as shown in FIG. 6, the vent hole 11 is disposed in the first block of the upper baffle 1 On the sheet 6, the venting opening 11 facilitates healing of the healing of the pressed tissue. The position of the venting opening 11 is preferably flush with or in the vicinity of the tissue press face 23. The venting opening 11 may be provided in plurality along the circumferential side wall of the upper retaining ring 1, preferably uniformly along the circumferential side wall. Fig. 5 shows a perspective view of the assembled magnetic anvil ring with a plurality of vent holes 11.

Fourth embodiment

In still another embodiment, different from the foregoing embodiment, the magnetic anastomosis ring of the present invention further includes an observation window 12, as shown in FIG. 7, the observation window 12 is disposed on the side wall of the upper baffle 1 (ie, at the A flap 6) is preferably disposed at a lower portion of the upper retaining ring 1. The outer circumference of the lower retaining ring 4 is from the threaded opening, Different colors or scales are marked along the outer circumference, so that it can be seen by screwing the position observation window 12 whether the threaded lower retaining ring 4 has been screwed into the appropriate position of the upper retaining ring 1.

More preferably, as shown in Fig. 8, the magnetic annulus of the present invention further includes an auxiliary hole 41 provided on the bottom surface of the lower retaining ring 4, preferably two or more. The auxiliary hole 41 functions to facilitate the tightening or loosening of the tightened anastomosis ring by a third-party auxiliary installation tool. When the upper retaining ring 1 is screwed onto the lower retaining ring 4, in order to prevent the anastomotic ring from falling off, it is generally difficult to loosen it in the reverse direction, or it is difficult to apply force after tightening, so that the auxiliary hole 41 is provided. By means of the auxiliary hole 41 by means of a third-party auxiliary installation tool, it is possible to easily apply a force to tighten or loosen the anastomosis ring.

Fifth embodiment

In yet another embodiment, the lower retaining ring 4 is modified. As shown in FIG. 9, an annular groove 42 is disposed inside the second baffle 7 of the lower retaining ring 4. During the actual operation, the space of the annular groove 42 can accommodate excess tissue, and the annular groove 42 can be internally Some anti-inflammatory drugs and the like are placed in advance to prevent the anti-inflammatory structure of the foreskin.

More preferably, as shown in FIG. 10, in addition, a flushing hole 45 communicating with the annular groove 42 is opened on the bottom surface of the threaded lower retaining ring 4, and when flushing is required, the flushing solution can be injected into the ring through the flushing hole 45. In the groove 42, the tissue is washed to prevent tissue inflammation.

Sixth embodiment

In yet another embodiment, the manner in which the lower retaining ring 4 and the upper retaining ring 1 are combined is changed. Fig. 11 shows a perspective view of the embodiment, and Fig. 12 shows a sectional view of Fig. 11. This embodiment is similar to the first embodiment shown in FIG. 1 except that the upper baffle 1 and the lower baffle 4 are no longer threaded, and the second baffle 7 of the lower baffle 4 has a snap 43 on the rim. A discontinuous groove 44 is formed in the circumferential direction of the second flap 7, and the first flap 6 of the upper retaining ring 1 is opened with an annular groove 13 corresponding to the buckle 43. The lower retaining ring 4 is fastened to the upper retaining ring 1 by the snap 43 on the annular groove 13.

In this embodiment, it is also possible to refer to the fourth embodiment, in which an auxiliary hole 41 is provided on the bottom surface of the lower retaining ring 4, and by means of the auxiliary hole 41 by means of a third-party auxiliary mounting tool, the force can be easily applied to tighten or loosen the anastomosis. ring. Alternatively, the auxiliary hole 41 may also be provided on the side wall of the upper retaining ring 1 (i.e., on the first flap 6).

In this embodiment, reference may also be made to the fifth embodiment, in which a flushing hole 45 communicating with the annular groove 42 is opened on the bottom surface of the lower retaining ring 4, and when flushing is required, the flushing solution can be flushed through the flushing hole 45. Injection into the annular groove 42 allows irrigation of the tissue to prevent tissue inflammation.

Seventh embodiment

In the first to sixth embodiments, the upper magnetic ring 2 and the lower magnetic ring 3 are located inside the first flap 6 of the upper retaining ring 1 and the second flap 7 of the lower retaining ring 4.

In the present embodiment, the upper magnetic ring 2 and the lower magnetic ring 3 are still located in the annular space surrounded by the upper retaining ring 1 and the lower retaining ring 4, but unlike the foregoing embodiment, the upper magnetic ring 2 and the lower ring The magnetic ring 3 is sleeved outside the first flap 6 of the upper retaining ring 1 and the second flap 7 of the lower retaining ring 4.

As shown in FIGS. 13-14, the upper magnetic ring 2 and the lower magnetic ring 3 are sleeved on the outer side of the second flap 7 of the lower retaining ring 4 and the first flap 6 of the upper retaining ring 1. The rim of the second flap 7 has a radially outwardly projecting flange, the rim of the first flap 6 having a radially inwardly projecting flange. The radius of the circumference of the first flap 6 is slightly larger than that of the second flap 7. When the card is jammed, the first flap 6 of the upper retaining ring 1 is pressed down, and the flange of the first flap 6 passes over the flange of the second flap 7, and the two flanges are stuck together to prevent The retaining ring 1 and the lower retaining ring 4 are disengaged. Alternatively, the first flap 6 may also be snapped from the inner side of the second flap 7 to the second flap 7, the orientation of the flange being opposite.

Meanwhile, the height of the first flap 6 and the height of the second flap 7 should match the height of the upper magnetic ring 2 and the lower magnetic ring 3, as shown in FIG. 14, wherein FIG. 14 further includes In the U-shaped case described in the second embodiment, the height of the first flap 6 and the height of the second flap 7 should match the heights of the upper magnetic ring 2, the U-shaped shell and the lower magnetic ring 3.

As shown in FIG. 3-14, a crack is formed in the second baffle 7 in the axial direction, and a plurality of cracks can be uniformly disposed, and the crack is opened to make the baffle elastic, and the second baffle 7 and the first baffle are provided. 6 cards and time can be radially tightened to enhance the card and effect.

In an alternative embodiment, a projection may be provided on the outer wall of the first flap 6, correspondingly, a recess is provided on the inner wall of the second flap 7, the circumferential radius of the first flap 6 being slightly smaller than the second flap The radius of the circle of 7. When the card is jammed, the first flap 6 is inserted into the inner side of the second flap 7, and the projection of the first flap 6 is forced into the recess of the second flap 7, so that the upper retaining ring 1 and the lower retaining ring 4 cards and get together.

The seventh embodiment describes the case where the upper magnetic ring 2 and the lower magnetic ring 3 are located outside the second flap 7 and the first flap 6, in the present embodiment, the second flap 7 and the first flap 6 The structure and the card and the manner are equally applicable to the first to sixth embodiments.

The invention and its embodiments have been described above schematically, and the description is not limited, The figures are only a few embodiments of the present invention, and the actual structure is not limited thereto, and the embodiments may be combined. Other forms of construction, transmission, and installation and connection are inconspicuously designed in a manner similar to that of the technical solution, without departing from the spirit of the invention. All should fall within the scope of protection of the present invention.

Claims

A magnetic anastomotic ring, comprising: an upper magnetic ring (2), a lower magnetic ring (3), an upper retaining ring (1) and a lower retaining ring (4), wherein

An end surface of the lower magnetic ring (3) can be adsorbed together with an end surface of the upper magnetic ring (2);

The upper retaining ring (1) and the lower retaining ring (4) can be combined to form an annular space, and the lower magnetic ring (3) and the upper magnetic ring (2) can be accommodated in the annular space.
The magnetic anastomotic ring according to claim 1, wherein the upper retaining ring (1) has a first blocking piece (6), and the lower blocking ring (4) has a second blocking piece (7), The inner wall of one of the flaps (6) is provided with a thread, and the outer wall of the second flap (7) is provided with a thread, and the two threads can be screwed together, the annular space being in the first flap (6) and the second flap ( 7) The inside.
The magnetic anastomotic ring according to claim 1, wherein the upper retaining ring (1) has a first blocking piece (6), and the lower blocking ring (4) has a second blocking piece (7), The edge of the second blocking piece (7) is provided with a buckle (43) and a discontinuous groove (44), and the first blocking piece (6) is provided with an annular groove corresponding to the buckle (43). (13) The annular space is inside the first flap (6) and the second flap (7).
Magnetic annulus according to claim 1, characterized in that the upper retaining ring (1) has a first flap (6) and the lower retaining ring (4) has a second flap (7) The rim of the first flap (6) has a radial flange, the second flap (7) has a radial flange, the two flanges can be snapped together, the annular space is at first The outer side of the flap (6) and the second flap (7), preferably, the second flap (7) is provided with a slit in the axial direction.
The magnetic anastomosis ring according to claim 1, further comprising:

a first U-shaped shell (31) and a second U-shaped shell (32), wherein the first U-shaped shell (31) and the second U-shaped shell (32) are placed in the lower retaining ring (4), The first U-shaped shell (31) and the second U-shaped shell (32) are buckled into a first cavity, and the lower magnetic ring (3) can be placed in the first cavity;

a third U-shaped shell (21) and a fourth U-shaped shell (22), wherein the third U-shaped shell (21) and the fourth U-shaped shell (22) are placed in the upper retaining ring (1), the third The U-shaped shell (21) and the fourth U-shaped shell (22) are buckled to form a second cavity, and the upper magnetic ring (2) can be placed in the second cavity.
The magnetic anastomotic ring according to claim 1, further comprising: a vent hole (11), The venting opening (11) is provided on the side wall of the upper retaining ring (1) or the lower retaining ring (4).
The magnetic anastomotic ring according to claim 1, further comprising: an observation window (12) for observing a relative position of the upper retaining ring (1) and the lower retaining ring (4), the viewing window (12) Provided on the side wall of the upper baffle (1) or the lower baffle (4), preferably the outer ring (1) or the lower baffle (4) has a mark on its outer circumference.
The magnetic anastomotic ring according to claim 1, further comprising: an auxiliary hole (41) for assisting in tightening or loosening the combined upper and lower retaining rings (4), preferably The auxiliary hole (41) is disposed on the bottom surface of the lower retaining ring (4) or on the side wall of the upper retaining ring (1).
The magnetic anastomosis ring according to claim 1, further comprising: an annular groove (42) for accommodating excess tissue, said annular groove (42) being located on a side of said lower stop ring (4) Preferably, the magnetic anastomotic ring further includes: a flushing hole (45) disposed on a bottom surface of the lower retaining ring (4) and communicating with the annular groove (42) .
Magnetic annulus according to claim 1, characterized in that the lower magnetic ring (3) is placed in the lower retaining ring (4) and the two are integrally formed, or the upper magnetic ring (2) is placed In the upper retaining ring (1) and the two are integrally formed, preferably, the upper magnetic ring (2) and the lower magnetic ring (3) are elliptical or pear-shaped.
The magnetic anastomotic ring according to claim 1, wherein the surface on which the upper magnetic ring (2) and the lower magnetic ring (3) are attracted is a tapered arc surface, and the upper magnetic ring (2) and the lower surface The surface of the surface on which the magnetic ring (3) is attracted has a knurled or interrupted groove.
Magnetic annulus ring according to claim 1, characterized in that the edge of the upper and lower retaining ring (1) and the lower retaining ring (4) are combined Can cut off the structure of the tissue.