An adjustable pressurized fully degradable luminal tissue stapler

Abstract

The present invention relates to an adjustable pressurized fully degradable tubular lumen tissue stapler, which comprises: an inner tissue connecting tube, one end of which is provided with a limiting groove; an outer tissue connecting tube, which comprises a pressure regulating tube and a fixed connecting tube, the fixed connecting tube is sleeved on the outer surface of the pressure regulating tube, and the fixed connecting tube and the pressure regulating tube can slide relatively, the fixed connecting tube comprises mutually connected elastic gradient arc tube sections and straight tube sections, the inner surface of one end of the straight tube section close to the gradient arc tube section is provided with a fixed groove, a movable gap is formed between the gradient arc tube section and the pressure regulating tube, the pressure regulating tube is provided with a limiting hole at the movable gap position, a limiting ball is provided at the limiting hole, the diameter of the limiting hole is smaller than the diameter of the limiting ball, the inner radius of the gradient arc tube section is smaller than the sum of the inner radius of the pressure regulating tube and the diameter of the limiting ball, and one end of the inner tissue connecting tube provided with the limiting groove can extend into the pressure regulating tube. Compared with the prior art, the stapler of the present invention performs bidirectional pressure adjustment on the tissue anastomosis position and is biodegradable.

Description

Technical Field

[0001] The invention belongs to the technical field of tissue anastomosis, and relates to an adjustable pressurized fully degradable lumen tissue stapler. Background Art

[0002] In colorectal surgery, in order to restore the normal digestive and absorptive function of the intestine, it is necessary to resect the diseased part of the intestine and anastomose the remaining intestine to re-form an intestine with smooth structure and normal function. The effect of intestinal anastomosis determines the quality of the operation and affects the patient's recovery after surgery, so it is particularly important to improve and innovate the anastomosis technology.

[0003] At present, the commonly used intestinal tissue anastomosis methods in clinical practice include manual suture anastomosis and mechanical stapler anastomosis. Manual suture anastomosis is relatively complicated and time-consuming in operation, requiring a high level of operation skills from the doctor, and is prone to complications such as anastomotic bleeding, anastomotic fistula, and anastomotic stenosis. Mechanical stapler anastomosis has the advantages of simple operation, short operation time, and fast postoperative recovery compared to manual suture anastomosis. However, mechanical staplers are expensive, and the residue of staples can easily induce local inflammatory reactions in tissues. In addition, the pressure of existing pressurized staplers cannot be adjusted, making it difficult to adapt to individual differences between different patients.

[0004] Therefore, it is necessary to develop a new type of intestinal tissue stapler that can gradually fuse the tissues under pressure to achieve tissue connection, and can adjust the applied pressure during the anastomosis process. The stapler will then degrade and absorb, and finally complete tissue anastomosis without foreign matter residue, thereby improving the quality of the anastomosis and the safety of the operation. Summary of the invention

[0005] The purpose of the present invention is to provide an adjustable pressurized fully degradable tubular tissue stapler to overcome the defects in the prior art such as stapler residues easily inducing local inflammatory reactions in tissues, or the pressure of the existing pressurized staplers cannot be adjusted, making it difficult to adapt to individual differences between different patients.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An adjustable pressurized fully degradable luminal tissue stapler, comprising:

[0008] An inner tissue connecting tube for connecting lumen tissue: one end of the inner tissue connecting tube is provided with a plurality of limiting grooves, the limiting grooves are arranged on the outer surface of the inner tissue connecting tube around the central axis of the inner tissue connecting tube;

[0009] External tissue connecting tube: It includes a pressure regulating tube for adjusting pressure and a fixed connecting tube for connecting another section of tubular cavity tissue, the fixed connecting tube is sleeved on the outer surface of the pressure regulating tube, and the fixed connecting tube and the pressure regulating tube can slide relative to each other, the fixed connecting tube includes elastic gradient arc tube sections and straight tube sections connected to each other, the inner diameter of the gradient arc tube section gradually decreases from the outside to the inside, the inner surface of one end of the straight tube section close to the gradient arc tube section is provided with a fixed groove, a movable gap is formed between the gradient arc tube section and the pressure regulating tube, and the pressure regulating tube is provided with a A plurality of limiting holes are provided at each of the limiting holes, wherein a limiting ball is provided at the limiting hole, wherein the diameter of the limiting hole is smaller than the diameter of the limiting ball, the inner radius of the gradually changing arc-shaped tube section is smaller than the sum of the inner radius of the pressure regulating tube and the diameter of the limiting ball, and the end of the inner tissue connecting tube provided with the limiting groove can extend into the pressure regulating tube, and when the end of the inner tissue connecting tube provided with the limiting groove extends into the pressure regulating tube and slides relative to the pressure regulating tube, the limiting ball moves in the movable gap and falls into different limiting grooves in turn, and then pushes the fixed connecting tube to make the limiting ball fit into the fixed groove.

[0010] Furthermore, a plurality of limiting holes are symmetrically arranged around the central axis of the voltage regulating tube.

[0011] Furthermore, there are two limiting holes.

[0012] Furthermore, the cross section of the limiting groove is semicircular, and the diameter of the limiting groove is not less than the diameter of the limiting ball. The limiting groove is used to change the position of the limiting ball so that the limiting ball is located in different limiting grooves to adjust the pressure of the stapler.

[0013] Furthermore, the inner tissue connecting tube is provided with a tissue connecting groove for connecting to the lumen tissue.

[0014] Furthermore, the width of the tissue connecting groove is smaller than the width of the limiting groove.

[0015] Furthermore, there are three limiting grooves.

[0016] Furthermore, the diameters of the plurality of limiting holes are the same, and the diameters of the plurality of limiting balls are the same.

[0017] Furthermore, one end of the pressure regulating pipe is provided with a protrusion for preventing the fixed connecting pipe from sliding out of the pressure regulating pipe, the straight pipe section is close to the protrusion, and the outer diameter of the protrusion is larger than the inner diameter of the straight pipe section. The protrusion is used to limit the displacement of the fixed connecting pipe.

[0018] Furthermore, the tissue stapler is made of biodegradable material, and the biodegradable material is a degradable magnesium alloy, a degradable zinc alloy or a degradable polymer.

[0019] Furthermore, the connecting portion between the gradually curved pipe section and the straight pipe section is made of an elastic polymer material.

[0020] The inner tissue connecting tube and the pressure regulating tube of the tissue stapler of the present invention can slide relative to each other, so that the limiting ball falls into different limiting grooves of the inner tissue connecting tube through the limiting hole, and then the fixed connecting tube slides relative to the pressure regulating tube, so that the limiting ball located in the limiting groove is stuck in the fixed groove.

[0021] The tissue stapler of the present invention can be used for pressurized anastomosis of all luminal tissues of the human body such as the intestine, esophagus and blood vessels.

[0022] When the tissue stapler of the present invention is used, the operating steps are as follows:

[0023] (1) Before use, the diameter of the luminal tissue to be anastomosed is measured, and the inner tissue connecting tube and the outer tissue connecting tube of corresponding size are selected according to the measured diameter;

[0024] (2) One end of the luminal tissue to be anastomosed is fixed to the inner tissue connecting tube through the tissue connecting groove, and the other end of the luminal tissue is sheathed outside the fixed connecting tube;

[0025] (3) Extend one end of the inner tissue connecting tube with the limiting groove into the pressure regulating tube, push the inner tissue connecting tube so that it slides relative to the pressure regulating tube, and the limiting ball falls into the first limiting groove of the inner tissue connecting tube. Continue to push the inner tissue connecting tube, and the limiting ball falls into the second limiting groove of the inner tissue connecting tube until the inner tissue connecting tube and the pressure regulating tube are adjusted to the appropriate position, thereby adjusting the pressure applied to the anastomotic part of the luminal tissue;

[0026] (4) Push the fixed connecting tube to make it slide relative to the pressure regulating tube, and the limiting ball is inserted into the fixed groove inside the fixed connecting tube. The relative position of the inner tissue connecting tube and the pressure regulating tube is fixed by the limiting ball, thereby achieving pressurized anastomosis of the luminal tissue.

[0027] The luminal tissue stapler of the present invention is used for luminal tissue anastomosis. When in use, the pressure applied to the luminal tissue anastomosis site can be adjusted to reduce the difficulty of tissue anastomosis and improve the quality of luminal tissue anastomosis. After the tissue reconstruction is completed, the stapler gradually degrades and disappears, eliminating the long-term residual foreign matter in the body after surgery without the need for secondary surgery to remove it, thereby reducing the incidence of adverse reactions after surgery.

[0028] The adjustable pressurized fully degradable tubular tissue stapler provided by the present invention can bidirectionally adjust the pressure applied to the tubular tissue anastomosis site when in use; the tissue stapler provided by the present invention can support the tubular cavity before the anastomosis is healed, reducing the incidence of anastomotic stenosis; the tissue stapler of the present invention is made of biodegradable materials, which can be naturally degraded and absorbed in the human body, and finally achieve tissue anastomosis without foreign matter residue. At the same time, the adjustable pressurized fully degradable tubular tissue stapler provided by the present invention has a simple structure, is easy to manufacture and assemble, and can shorten the operation time and improve the quality of the operation when in use. In addition, it can be designed into different models according to the size of the tissue to meet the actual needs of different patients.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] (1) The tissue stapler of the present invention is provided with a limiting ball, and by making the pressure regulating tube and the inner tissue connecting tube slide relative to each other, the limiting ball enters different limiting grooves to adjust the pressure of the lumen tissue anastomosis part. The principle is simple and can achieve two-way pressure adjustment. It can be used for pressurized anastomosis of all lumen tissues of the human body, such as the intestine, esophagus and blood vessels;

[0031] (2) The tissue stapler of the present invention provides support for the luminal tissue before the anastomosis is healed, thereby reducing the incidence of anastomotic stenosis;

[0032] (3) The tissue stapler of the present invention is easy to use and simple to operate, reduces the difficulty of anastomosis, and is suitable for tissue anastomosis in a laparoscopic surgical environment;

[0033] (4) The tissue stapler of the present invention has a simple structure and is easy to manufacture and assemble;

[0034] (5) The tissue stapler of the present invention can be designed into different structural sizes to meet the actual needs of different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structural decomposition of the luminal tissue stapler of the present invention;

[0036] Figure 2 It is a cross-sectional view of the fixed connecting pipe of the present invention;

[0037] Figure 3 It is a structural schematic diagram of the pressure regulating tube of the present invention;

[0038] Figure 4 It is a schematic diagram of the working principle of the luminal tissue stapler of the present invention;

[0039] Description of the markings in the figure:

[0040] 1-inner tissue connecting tube, 1-1-tissue connecting groove, 1-2-limiting groove, 2-fixed connecting tube, 2-1-gradually changing arc tube section, 2-2-straight tube section, 2-3-fixed groove, 3-pressure regulating tube, 3-1-limiting hole, 3-2-protrusion, 4-limiting ball. DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0042] In order to overcome the defects of the prior art that stapler residues are prone to cause local inflammatory reactions in tissues, or that the pressure of the existing pressurized staplers cannot be adjusted, making it difficult to adapt to the individual differences between different patients, the present invention provides an adjustable pressurized fully degradable luminal tissue stapler, see Figure 1-4 , the stapler comprises:

[0043] An inner tissue connecting tube 1 for connecting lumen tissue: one end of the inner tissue connecting tube 1 is provided with a plurality of limiting grooves 1-2, and the limiting grooves 1-2 are arranged on the outer surface of the inner tissue connecting tube 1 around the central axis of the inner tissue connecting tube 1;

[0044] External tissue connecting tube: It includes a pressure regulating tube 3 for adjusting pressure and a fixed connecting tube 2 for connecting another section of tubular cavity tissue. The fixed connecting tube 2 is sleeved on the outer surface of the pressure regulating tube 3, and the fixed connecting tube 2 and the pressure regulating tube 3 can slide relative to each other. The fixed connecting tube 2 includes a gradually changing arc tube section 2-1 and a straight tube section 2-2 that are connected to each other and have elasticity. The inner diameter of the gradually changing arc tube section 2-1 gradually decreases from the outside to the inside. A fixed groove 2-3 is provided on the inner surface of one end of the straight tube section 2-2 close to the gradually changing arc tube section 2-1. A movable gap is formed between the gradually changing arc tube section 2-1 and the pressure regulating tube 3. The pressure regulating tube 3 is provided with a plurality of A limiting hole 3-1 is provided at the limiting hole 3-1, a limiting ball 4 is provided at the limiting hole 3-1, the diameter of the limiting hole 3-1 is smaller than the diameter of the limiting ball 4, the inner radius of the gradually changing arc-shaped tube section 2-1 is smaller than the sum of the inner radius of the pressure regulating tube 3 and the diameter of the limiting ball 4, and one end of the inner tissue connecting tube 1 provided with the limiting groove 1-2 can extend into the pressure regulating tube 3. When one end of the inner tissue connecting tube 1 provided with the limiting groove 1-2 extends into the pressure regulating tube 3 and slides relative to the pressure regulating tube 3, the limiting ball 4 moves in the movable gap and falls into different limiting grooves 1-2 in turn, and then pushes the fixed connecting tube 2 to make the limiting ball 4 stuck in the fixed groove 2-3.

[0045] For some specific implementations, see Figure 3, a plurality of limiting holes 3 - 1 are symmetrically arranged around the central axis of the voltage regulating tube 3 .

[0046] In a more specific implementation, there are two limiting holes 3 - 1 .

[0047] For some specific implementations, see Figure 4 The cross section of the limiting groove 1-2 is semicircular, and the diameter of the limiting groove 1-2 is not less than the diameter of the limiting ball 4. The limiting groove 1-2 is used to change the position of the limiting ball 4 so that the limiting ball 4 is located in different limiting grooves 1-2 to adjust the stapler pressure.

[0048] For some specific implementations, see Figure 1 and Figure 4 The inner tissue connecting tube 1 is provided with a tissue connecting groove 1-1 for connecting the lumen tissue.

[0049] In a more specific embodiment, the width of the tissue connecting groove 1-1 is smaller than the width of the limiting groove 1-2.

[0050] For some specific implementations, see Figure 1 and Figure 4 , there are three limiting grooves 1-2.

[0051] In some specific implementations, the diameters of the plurality of limiting holes 3 - 1 are the same, and the diameters of the plurality of limiting balls 4 are the same.

[0052] For some specific implementations, see Figure 1 , Figure 3 and Figure 4 One end of the pressure regulating tube 3 is provided with a protrusion 3-2 for preventing the fixed connecting tube 2 from sliding out of the pressure regulating tube 3, the straight tube section 2-2 is close to the protrusion 3-2, and the outer diameter of the protrusion 3-2 is larger than the inner diameter of the straight tube section 2-2. The protrusion 3-2 is used to limit the displacement of the fixed connecting tube 2.

[0053] In some specific embodiments, the tissue stapler is made of a biodegradable material, and the biodegradable material is a degradable magnesium alloy, a degradable zinc alloy or a degradable polymer.

[0054] In some specific embodiments, the material of the connection portion between the gradually curved pipe segment 2-1 and the straight pipe segment 2-2 is an elastic polymer material.

[0055] Embodiment 1:

[0056] This embodiment provides an adjustable pressurized fully degradable luminal tissue stapler, such as Figure 1-4As shown, the tissue stapler includes an inner tissue connecting tube 1, a tissue connecting groove 1-1, a limiting groove 1-2, a fixed connecting tube 2, a gradually changing arc tube section 2-1, a straight tube section 2-2, a fixed groove 2-3, a pressure regulating tube 3, a limiting hole 3-1, a protrusion 3-2, and a limiting ball 4.

[0057] The inner tissue connecting tube 1 is used to connect the lumen tissue, such as Figure 1 and Figure 4 As shown, one end of the inner tissue connecting tube 1 is provided with three limiting grooves 1 - 2 , and the three limiting grooves 1 - 2 are arranged on the outer surface of the inner tissue connecting tube 1 around the central axis of the inner tissue connecting tube 1 .

[0058] The pressure regulating tube 3 is used to adjust the pressure, and the fixed connecting tube 2 is used to connect another section of the lumen tissue. Figure 4 As shown, the fixed connecting pipe 2 is sleeved on the outer surface of the pressure regulating pipe 3, and the fixed connecting pipe 2 and the pressure regulating pipe 3 can slide relative to each other. Figure 2 and Figure 4 As shown, the fixed connecting pipe 2 includes an elastically connected gradual arc pipe section 2-1 and a straight pipe section 2-2. The inner diameter of the gradual arc pipe section 2-1 gradually decreases from the outside to the inside. A fixed groove 2-3 is provided on the inner surface of one end of the straight pipe section 2-2 close to the gradual arc pipe section 2-1. A movable gap is formed between the gradual arc pipe section 2-1 and the pressure regulating pipe 3. Figure 3 and Figure 4 As shown, the pressure regulating tube 3 is provided with two limiting holes 3-1 of the same diameter at the movable gap, and the two limiting holes 3-1 are symmetrically arranged around the central axis of the pressure regulating tube 3. A limiting ball 4 is provided at the limiting hole 3-1, and the diameters of the two limiting balls 4 are also the same. The diameter of the limiting hole 3-1 is smaller than the diameter of the limiting ball 4, and the inner radius of the gradually changing arc-shaped tube section 2-1 is smaller than the sum of the inner radius of the pressure regulating tube 3 and the diameter of the limiting ball 4. One end of the inner tissue connecting tube 1 provided with the limiting groove 1-2 can extend into the pressure regulating tube 3. When one end of the inner tissue connecting tube 1 provided with the limiting groove 1-2 extends into the pressure regulating tube 3 and slides relatively with the pressure regulating tube 3, the limiting ball 4 moves in the movable gap and falls into different limiting grooves 1-2 in turn, and then pushes the fixed connecting tube 2, so that the limiting ball 4 is stuck in the fixed groove 2-3.

[0059] like Figure 4 As shown, the cross section of the limiting groove 1-2 is semicircular, and the diameter of the limiting groove 1-2 is not less than the diameter of the limiting ball 4. The limiting groove 1-2 is used to change the position of the limiting ball 4 so that the limiting ball 4 is located in different limiting grooves 1-2 to adjust the stapler pressure.

[0060] like Figure 1 and Figure 4 As shown, the inner tissue connecting tube 1 is provided with a tissue connecting groove 1-1 for connecting the lumen tissue, and the width of the tissue connecting groove 1-1 is smaller than the width of the limiting groove 1-2.

[0061] like Figure 1 , Figure 3 and Figure 4 As shown, one end of the pressure regulating tube 3 is provided with a protrusion 3-2 for preventing the fixed connecting tube 2 from slipping out of the pressure regulating tube 3, the straight tube section 2-2 is close to the protrusion 3-2, and the outer diameter of the protrusion 3-2 is larger than the inner diameter of the straight tube section 2-2. The protrusion 3-2 is used to limit the displacement of the fixed connecting tube 2.

[0062] The tissue stapler is made of biodegradable material, which is a degradable magnesium alloy, a degradable zinc alloy or a degradable polymer. The material of the connection part between the gradual arc tube section 2-1 and the straight tube section 2-2 is an elastic polymer material.

[0063] When the tissue stapler of this embodiment is used, the operation steps are as follows:

[0064] (1) Before use, the diameter of the luminal tissue to be anastomosed is measured, and the inner tissue connecting tube 1, the fixed connecting tube 2, and the pressure regulating tube 3 of corresponding sizes are selected according to the measured diameter;

[0065] (2) One end of the luminal tissue to be anastomosed is fixed to the inner tissue connecting tube 1 through the tissue connecting groove 1-1, and the other end of the luminal tissue is sheathed outside the fixed connecting tube 2 (the state of the stapler at this time is as shown in FIG. Figure 4 (a)

[0066] (3) The end of the inner tissue connecting tube 1 with the limiting groove 1-2 is extended into the pressure regulating tube 3, and the inner tissue connecting tube 1 is pushed so that it slides relative to the pressure regulating tube 3, and the limiting ball 4 falls into the first limiting groove 1-2 of the inner tissue connecting tube 1 (the process is as follows) Figure 4 (a)-(c)), continue to push the inner tissue connecting tube 1, and the limiting ball 4 falls into the second limiting groove 1-2 of the inner tissue connecting tube 1 (the process is as shown in Figure 4 (c)-(e)), until the inner tissue connecting tube 1 and the pressure regulating tube 3 are adjusted to the appropriate position, thereby adjusting the pressure applied to the anastomotic part of the lumen tissue;

[0067] (4) Push the fixed connecting pipe 2 to make it slide relative to the pressure regulating pipe 3, and the limiting ball 4 is inserted into the fixed groove 2-3 inside the fixed connecting pipe 2 (the process is as follows Figure 4 (e)-(f)), the relative positions of the inner tissue connecting tube 1 and the pressure regulating tube 3 are fixed by the limiting ball 4, thereby achieving pressurized anastomosis of the luminal tissue.

[0068] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. An adjustable pressurized fully degradable luminal tissue stapler, characterized in that: include: An inner tissue connecting tube (1) for connecting lumen tissue: one end of the inner tissue connecting tube is provided with a plurality of limiting grooves (1-2), the limiting grooves (1-2) being arranged on the outer surface of the inner tissue connecting tube (1) around the central axis of the inner tissue connecting tube (1); External tissue connecting tube: It comprises a pressure regulating tube (3) for regulating pressure and a fixed connecting tube (2) for connecting another section of tubular cavity tissue, wherein the fixed connecting tube (2) is sleeved on the outer surface of the pressure regulating tube (3), and the fixed connecting tube (2) and the pressure regulating tube (3) can slide relative to each other, wherein the fixed connecting tube (2) comprises a gradually changing arc tube section (2-1) and a straight tube section (2-2) which are connected to each other and have elasticity, wherein the inner diameter of the gradually changing arc tube section (2-1) gradually decreases from the outside to the inside, and a fixed groove (2-3) is provided on the inner surface of one end of the straight tube section (2-2) close to the gradually changing arc tube section (2-1), and a movable gap is formed between the gradually changing arc tube section (2-1) and the pressure regulating tube (3), and the pressure regulating tube (3) is provided with a plurality of limiting holes ( 3-1), a limiting ball (4) is provided at the limiting hole (3-1), the diameter of the limiting hole (3-1) is smaller than the diameter of the limiting ball (4), the inner radius of the gradually changing arc-shaped pipe section (2-1) is smaller than the sum of the inner radius of the pressure regulating pipe (3) and the diameter of the limiting ball (4), the end of the inner tissue connecting pipe (1) provided with the limiting groove (1-2) can extend into the pressure regulating pipe (3), when the end of the inner tissue connecting pipe (1) provided with the limiting groove (1-2) extends into the pressure regulating pipe (3) and slides relative to the pressure regulating pipe (3), the limiting ball (4) moves in the movable gap and falls into different limiting grooves (1-2) in turn, and then pushes the fixed connecting pipe (2) to make the limiting ball (4) snap into the fixed groove (2-3); A plurality of limiting holes (3-1) are symmetrically arranged around the central axis of the pressure regulating tube (3); The cross section of the limiting groove (1-2) is semicircular, and the diameter of the limiting groove (1-2) is not less than the diameter of the limiting ball (4); One end of the pressure regulating tube (3) is provided with a protrusion (3-2) for preventing the fixed connecting tube (2) from sliding out of the one end of the pressure regulating tube (3); the straight tube section (2-2) is close to the protrusion (3-2); and the outer diameter of the protrusion (3-2) is greater than the inner diameter of the straight tube section (2-2).

2. The adjustable pressurized fully degradable endoluminal tissue stapler according to claim 1, characterized in that: The limiting holes (3-1) are provided with two.

3. The adjustable pressurized fully degradable endoluminal tissue stapler according to claim 1, characterized in that: The inner tissue connecting tube (1) is provided with a tissue connecting groove (1-1) for connecting with the lumen tissue.

4. The adjustable pressurized fully degradable endoluminal tissue stapler according to claim 1, characterized in that: The limiting grooves (1-2) are provided with three.

5. The adjustable pressurized fully degradable endoluminal tissue stapler according to claim 1, characterized in that: The diameters of the plurality of limiting holes (3-1) are all the same, and the diameters of the plurality of limiting balls (4) are all the same.

6. The adjustable pressurized fully degradable endoluminal tissue stapler according to claim 1, characterized in that: The tissue stapler is made of biodegradable material, and the biodegradable material is a degradable magnesium alloy, a degradable zinc alloy or a degradable polymer.

7. The adjustable pressurized fully degradable endoluminal tissue stapler according to claim 1, characterized in that: The material of the connection portion between the gradually changing arc-shaped pipe section (2-1) and the straight pipe section (2-2) is an elastic polymer material.

Images