Intestinal tract anastomat

Abstract

The utility model provides an intestinal tract anastomat which aims to solve the technical problem that in the prior art, magnets are used as main clamping parts, and the discharging process is uncomfortable. The anastomat comprises an annular memory alloy, the section of the memory alloy is in a U shape, an opening of the U shape is located on the outer side of the memory alloy, and when the temperature of the memory alloy rises to 35 DEG C or above, the memory alloy forms a spherical structure; the heat insulation layer is arranged on the outer side of the memory alloy and laid on the inner wall of the U-shaped structure; the degradable layer covers the inner ring of the memory alloy; wherein the degradable layer and the heat insulation layer wrap the whole memory alloy, and the anastomat is also of an annular structure with a U-shaped section. The degradable layer is slowly and naturally degraded in the intestinal tract, degradation is completed after the degradable layer is completely healed in the intestinal tract, the memory alloy makes contact with substances in the intestinal tract, the temperature of the memory alloy is increased, the shape of the memory alloy is changed, and a spherical structure convenient to discharge is formed.

Description

Technical Field

[0001] The utility model relates to a medical consumable, in particular to an intestinal anastomosis device. Background Art

[0002] The intestinal stapler is a surgical instrument widely used in digestive tract surgery. It can tightly connect the two ends of the intestine through a mechanical device to promote intestinal healing and recovery.

[0003] The intestinal stapler currently used clamps the two ends of the intestine from the inside of the intestine. It mainly uses two annular magnets, which are automatically discharged after the intestine heals. However, the magnets are large in size and the discharge process is uncomfortable. Utility Model Content

[0004] In view of the technical problem that the prior art uses magnets as the main clamping components and there is a discomfort in the discharge process, the utility model provides an intestinal stapler, which has the advantage of being easy to discharge after the intestine is healed.

[0005] The technical solution of the utility model is:

[0006] An intestinal stapler, comprising:

[0007] A memory alloy in the shape of a ring, the cross section of which is U-shaped, the opening of which is located outside the memory alloy, and when the temperature of the memory alloy rises to above 35° C., it forms a spherical structure;

[0008] A heat insulation layer, which is arranged on the outside of the memory alloy and laid on the inner wall of the U-shaped structure;

[0009] A degradable layer covering the inner ring of the memory alloy;

[0010] The degradable layer and the heat-insulating layer wrap the entire memory alloy, and make the stapler also a ring structure with a U-shaped cross section.

[0011] Optionally, on the cross section of the stapler, two sides of the thermal insulation layer respectively extend outward and wrap around the end of the memory alloy, and two ends of the degradable layer respectively contact the two sides of the thermal insulation layer.

[0012] Optionally, an annular embedding groove is provided on the outer side surface of the memory alloy, the embedding groove is coaxial with the memory alloy, and the embedding groove is close to the edge of the memory alloy;

[0013] An annular spring is arranged in the embedding groove.

[0014] Optionally, a plurality of embedding grooves are coaxially provided on the memory alloy, and one annular spring is provided in each embedding groove.

[0015] Optionally, a plurality of baffles are provided on the embedding groove, and the baffles are arranged along the radial direction of the embedding groove.

[0016] Optionally, the heat insulation layer is made of soft material, and the inner side of the heat insulation layer has a layer of silica gel.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The initial state of the memory alloy is set to a U-shape, so that it clamps the two ends of the intestine inside, and then the memory alloy is separated from the intestine by a heat insulation layer to prevent the memory alloy from being heated.

[0019] Then, the degradable layer wrapped around the outside of the memory alloy slowly degrades naturally in the intestine, and by controlling the raw material ratio of the degradable layer and the degradation time of the degradable layer, the degradation is completed after the intestine is completely healed.

[0020] When the degradable layer is completely degraded, the memory alloy is in direct contact with the substances in the intestine, causing the temperature of the memory alloy to rise and to be higher than 35°C. Under this temperature condition, the memory alloy changes its shape, separating the memory alloy from the inside of the intestine and forming a spherical structure that is easy to excrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0026] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0027] Example:

[0028] See also Figure 1 and Figure 2 An intestinal stapler includes a memory alloy 1, a heat insulation layer 2 and a degradable layer 3. Specifically, the memory alloy 1 is annular in structure when the temperature is less than 30°C, and the cross section of the memory alloy 1 is a U-shaped structure. The two ends of the U-shaped structure are the two ends of the annular memory alloy 1, and the opening groove of the U-shaped structure faces outward (away from the side of the alloy axis). When the temperature of the memory alloy 1 exceeds 35°C, the structure changes, and the two ends rotate away from each other and approach the axis of the memory alloy 1, so that the memory alloy 1 forms a spherical structure.

[0029] The following structural descriptions of the memory alloy 1 and the stapler are all based on the condition that the temperature of the memory alloy 1 is less than 30°C.

[0030] A heat-insulating layer 2 is arranged on the outer side of the memory alloy 1, and the heat-insulating layer 2 is laid on the inner wall of the above-mentioned U-shaped structure. A degradable layer 3 is arranged on the inner side of the memory alloy 1. The degradable layer 3 and the heat-insulating layer 2 completely wrap the memory alloy 1 to form the intestinal stapler, and the intestinal stapler is also an annular structure with a U-shaped end face.

[0031] The heat insulating layer 2 is made of a soft material, and the inner side of the heat insulating layer 2 has a layer of silicone for easy adhesion to the intestine 7. The degradable layer 3 is a PLGA material, wherein the LA / GA of the PLGA material is 1:1-1.8:1. Generally, the natural healing time of the intestine 7 is two to four weeks, and the natural degradation time of the PLGA material with LA / GA=1:1-1.8:1 in the body is about 35 to 55 days, so that the degradable layer 3 can be completely degraded only after the intestine 7 is completely healed.

[0032] In this embodiment, the initial state of the memory alloy 1 is set to a U-shape so that the two ends of the intestine 7 are clamped inside, and then the memory alloy 1 is separated from the intestine 7 by the insulation layer 2 to prevent the memory alloy 1 from being heated.

[0033] The degradable layer 3 wrapped around the memory alloy 1 is then slowly and naturally degraded in the intestine 7. By controlling the raw material ratio of the degradable layer 3 and the degradation time of the degradable layer 3, the degradation is completed after the intestine 7 is completely healed.

[0034] When the degradable layer 3 is completely degraded, the memory alloy 1 is in direct contact with the substances in the intestine 7, causing the temperature of the memory alloy 1 to rise and to be higher than 35°C. Under this temperature condition, the memory alloy 1 changes its shape, causing the memory alloy 1 to separate from the inside of the intestine 7 and form a spherical structure that is easy to discharge.

[0035] In one specific embodiment:

[0036] On the cross-section of the intestinal anastomosis device, both sides of the thermal insulation layer 2 extend outward and wrap the ends of the memory alloy 1. At the same time, both sides of the thermal insulation layer 2 are in contact with the two ends of the degradable layer 3, so that the entire memory alloy 1 is wrapped in the degradable layer 3 and the thermal insulation layer 2, thereby preventing the memory alloy 1 from being affected by the ambient temperature in the intestine 7 too early and causing premature deformation.

[0037] In another specific embodiment:

[0038] The outer side surface of the memory alloy 1 (the outer side surface of its U-shaped cross-section structure) has an annular embedding groove 4, the axis of which is coaxial with the axis of the memory alloy 1, and the embedding groove 4 is close to the edge of the memory alloy 1 (close to the end of the U-shaped cross-section structure).

[0039] An annular spring 5 is arranged in the embedding groove 4. When the memory alloy 1 is at a temperature below 30°C, the annular spring 5 is in a stretched state.

[0040] In this embodiment, the annular spring 5 is provided to assist the deformation of the memory alloy 1 .

[0041] Preferably, a plurality of embedding grooves 4 are coaxially arranged on the outer side of the memory alloy 1 , an annular spring 5 is arranged in each embedding groove 4 , and the same number of embedding grooves 4 and annular springs 5 ​​are symmetrically arranged on both sides of the memory alloy 1 .

[0042] At the same time, a plurality of baffles 6 are arranged on the outer side of the memory alloy 1, and all baffles 6 extend along the radius direction of the annular groove, and all baffles 6 are evenly distributed around the annular groove. By arranging the baffles 6, the annular spring 5 can be fixed in the annular groove, and a force point can be provided for the annular spring 5.

[0043] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An intestinal stapler, characterized in that: include: A memory alloy in the shape of a ring, the cross section of which is U-shaped, the opening of which is located outside the memory alloy, and when the temperature of the memory alloy rises to above 35° C., it forms a spherical structure; A heat insulation layer, which is arranged on the outside of the memory alloy and laid on the inner wall of the U-shaped structure; A degradable layer covering the inner ring of the memory alloy; The degradable layer and the heat-insulating layer wrap the entire memory alloy, and make the stapler also a ring structure with a U-shaped cross section.

2. The intestinal stapler according to claim 1, characterized in that: On the cross section of the stapler, two sides of the heat insulating layer extend outwards and wrap around the end of the memory alloy, and two ends of the degradable layer are in contact with the two sides of the heat insulating layer.

3. The intestinal stapler according to claim 1, characterized in that: The outer surface of the memory alloy is provided with an annular embedding groove, the embedding groove is coaxial with the memory alloy, and the embedding groove is close to the edge of the memory alloy; An annular spring is arranged in the embedding groove.

4. The intestinal stapler according to claim 3, characterized in that: A plurality of embedding grooves are coaxially arranged on the memory alloy, and one annular spring is arranged in each embedding groove.

5. The intestinal stapler according to claim 4, characterized in that: The embedding groove is provided with a plurality of baffles, and the baffles are arranged along the radial direction of the embedding groove.

6. The intestinal stapler according to claim 1, characterized in that: The heat insulation layer is made of soft material, and the inner side of the heat insulation layer is provided with a layer of silica gel.

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