Anastomosis instrument

Abstract

The invention relates to an anastomosis instrument, which is degradable and comprises a head part, a waist part and a tail part, the head part, the waist part and the tail part are communicated with each other, and the section of the tail part is strip-shaped. The anastomosis instrument is direct and stable, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, suture of a doctor is avoided, the difficulty of pipeline anastomosis is greatly reduced, and meanwhile the anastomosis effect is improved. The tail with the strip-shaped section is matched with the inner wall of the second pipeline, the clamping face in the radial direction of the second pipeline is larger, displacement or disengagement of the tail can be effectively prevented, and the matching stability and safety are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an anastomosis device. Background Art

[0002] In the field of surgery, the main treatment methods and means of various diseases mostly rely on surgery, such as: surgery of the aorta and peripheral blood vessels, deep neck lymphatic-venous anastomosis (LVA), etc. These surgeries require cutting some blood vessels and then anastomosing them, or anastomosing lymphatic vessels with blood vessels, lymph nodes with blood vessels, that is, it is necessary to cut some channels in the human body and then anastomose them to treat various diseases, such as using LVA to treat Alzheimer's disease (AD).

[0003] Traditional duct anastomosis connection methods mainly rely on doctors to use surgical sutures to achieve anastomosis between ducts. Common suturing techniques include end-to-end suture and end-to-side vessel anastomosis. However, existing duct suturing techniques have many challenges and limitations: duct suturing is a very difficult task that requires doctors to have extremely high operating skills, especially for very thin blood vessels or lymphatic vessels. It not only requires doctors to maintain a high degree of concentration for a long time, but also due to the fragility of duct tissue, it is easy to tear during the suturing process, increasing the risk of reflux or bleeding, which may lead to serious postoperative complications, thus bringing great difficulties and risks to duct anastomosis. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide an anastomotic device that facilitates pipeline anastomotic connection.

[0005] To solve the above problems, the present invention provides the following technical solutions:

[0006] A degradable anastomosis device comprises: a head, a waist and a tail; the head is a hollow tube, one end of which can be connected to a first pipe, the waist is hollow and arranged between the head and the tail, respectively connecting the other end of the head and one end of the tail, the waist is formed by the other end of the head being adducted inwardly, the other end of the tail is adapted to be connected to the inner wall of a second pipe, the head, waist and tail are connected, and the cross section of the tail is strip-shaped.

[0007] Furthermore, the tail section is in the shape of an elongated strip.

[0008] Furthermore, the tail portion may be in the shape of an arc sheet, a semi-tube, a rectangle or a long strip.

[0009] Furthermore, the first pipe can be enlarged by over-supporting and then sleeved on the outer wall of the head, or the first pipe can be inserted into the inner cavity of the head for stable connection; the tail can pass through the incision on the side of the second pipe and extend into the interior of the second pipe through the incision to be clamped with the inner wall of the second pipe.

[0010] Furthermore, the other end of the head is retracted inwardly to form a snap-fit ​​surface.

[0011] Furthermore, the outer wall of the head is provided with a hollow portion penetrating the inner cavity.

[0012] Furthermore, the hollowing out of the head is a prism-shaped hollowing out.

[0013] Furthermore, the clamping surface is concave toward one end of the head.

[0014] Furthermore, an external anti-dropping member is provided on at least one of the outer wall of the head or the clamping surface.

[0015] Furthermore, the radial direction of the tail portion is parallel to the radial direction of the second pipe.

[0016] The beneficial effects of the present invention are as follows: the anastomosis instrument provides a direct and stable instrument, so that the first pipeline and the second pipeline can be directly anastomosed through the anastomosis instrument, rather than relying entirely on the doctor's sutures for anastomosis, so that the pipeline anastomosis does not require sutures or only requires a small amount of sutures as needed, thereby simplifying the surgical operation process, reducing the stringent requirements on the doctor's operating skills, greatly reducing the difficulty and risk of the operation, reducing the probability of postoperative complications, improving the patient's recovery speed and treatment effect, providing a more convenient and reliable pipeline anastomosis method, and greatly enhancing the convenience, safety and effectiveness of pipeline anastomosis.

[0017] The formation of the waist can prevent the blood in the second tube from flowing back into the first tube, and can also gather the liquid in the first tube to prevent overflow, so that the first tube and the second tube can be well anastomosed, which is more conducive to the doctor to sew the first tube and the second tube at the waist, and is conducive to the first tube port being tightened and clamped on the other end of the head, and the second tube incision being clamped on the tail, so that the anastomosis of the first tube and the second tube can be done without sutures, or only a small amount of sutures are required depending on the situation, thereby greatly reducing the difficulty of tube anastomosis.

[0018] At the same time, the tail portion with a strip-shaped cross section is adapted to the inner wall of the second pipe and the radial clamping surface of the second pipe is larger, which can effectively prevent the tail portion from shifting or falling out, greatly improving the stability and safety of the anastomosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1is a side view of an anastomotic device according to an embodiment of the present invention;

[0020] Figure 2 Another side view of the anastomotic device of the present invention in one embodiment;

[0021] Figure 3 It is another side view of an anastomotic device according to an embodiment of the present invention;

[0022] Figure 4 It is another side view of an anastomotic device according to an embodiment of the present invention;

[0023] Figure 5 A bottom view of an anastomotic device according to an embodiment of the present invention;

[0024] Figure 6 is a side view of another embodiment of the anastomotic device of the present invention;

[0025] Figure 7 is a schematic structural diagram of another embodiment of the anastomotic device of the present invention;

[0026] Figure 8 is a cross-sectional view of another embodiment of the anastomotic device of the present invention;

[0027] Fig. 9 is a schematic diagram of the use of the anastomotic device of the present invention in another embodiment;

[0028] Fig.10 is a schematic structural diagram of a further embodiment of the anastomotic device of the present invention;

[0029] Fig.11 FIG. 1 is a top view of another embodiment of the anastomosis device of the present invention.

[0030] Reference numerals:

[0031] 10. anastomosis device; 20. first pipeline; 30. second pipeline; 100. head; 200. waist; 300. tail;

[0032] 110, inner anti-slip piece; 120, first support bar; 130, second support bar; 140, hollow mesh opening; 310, tail anti-slip piece. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In order to overcome the great difficulties and risks of the traditional pipeline suturing technology in the background technology, it is necessary to develop an anastomosis device that is convenient for anastomosis of pipelines in the human body. The anastomosis device can simplify the surgical operation difficulty of pipeline anastomosis, improve the success rate of the operation, reduce the occurrence of complications, and promote natural healing without affecting the function of the pipeline in the human body, and ultimately improve the patient's prognosis and quality of life. Based on this, the present invention, that is, in response to the above needs, provides an anastomosis device that can be used for the anastomosis of blood vessels and blood vessels, lymphatic vessels and blood vessels, lymph nodes and blood vessels, and lymphatic plexus and blood vessels, aiming to solve the above problems existing in the prior art and bring safer and more effective solutions to the medical field through innovative design.

[0036] Please refer to Figure 1-11 As shown, the anastomosis device 10 of this embodiment is used to anastomose a first pipe 20 and a second pipe 30 in a human body. It can be used to anastomose the end of the first pipe 20 in a human body with the side or end of the second pipe 30, especially to anastomose the end of the first pipe 20 in a human body with the side of the second pipe 30.

[0037] That is, the anastomosis device 10 can be used for end-to-end anastomosis between the first pipe 20 and the second pipe 30, and can also be used for end-to-side anastomosis between the first pipe 20 and the second pipe 30, and can especially be used for end-to-side anastomosis between the first pipe 20 and the second pipe 30.

[0038] The first conduit 20 may be a first blood vessel, a lymphatic vessel, a lymph node or a lymphatic plexus in a human body, and the second conduit 30 may be a second blood vessel in a human body, and the second blood vessel may be a vein. The first blood vessel and the second blood vessel may be human blood vessels or artificial blood vessels. The embodiment scheme may be mainly applied to the anastomosis connection between the end of a first blood vessel and the side of a second blood vessel, the end of a lymphatic vessel and the side of a second blood vessel, a lymph node, or a lymphatic plexus and the side of a second blood vessel in a human body.

[0039] When the anastomotic device 10 is used in human ducts such as blood vessels and lymphatic vessels, high requirements are placed on size and precise structure, and therefore it is prepared by 3D printing or electrospinning.

[0040] Please refer to Figure 1-11As shown, the anastomosis device 10 includes a head 100, a waist 200 and a tail 300. The head 100 is a hollow tubular structure, one end of which can be connected to the first pipe 20. The waist 200 is hollow and arranged between the head 100 and the tail 300, and is respectively connected to the other end of the head 100 and one end of the tail 300. The waist 200 is formed by the other end of the head 100 being retracted. The other end of the tail 300 is adapted to be connected to the inner wall of the second pipe 30. The head 100, the waist 200 and the tail 300 are connected, so that the liquid in the first pipe 20 can flow into the second pipe 30 through the head 100, the waist 200 and the tail 300. The tail 300 can be designed into a variety of morphological structures for adapting and stably connecting the second pipe 30.

[0041] Considering that during anastomosis, the first pipe 20 and the second pipe 30 may be approximately parallel. In this case, the pipe needs to be bent at a large angle, which will generate a large dislodging force and is not conducive to stable anastomosis. For example, when the lymphatic vessel is anastomosed with the vein, the lymphatic vessel may be nearly parallel to the vein. Since the lymphatic vessel has great elasticity, it is easy to dislodge if it is bent too much. In order to facilitate the anastomosis and the stability of the anastomosis, the tail 300 and the head 100 can be set at a certain angle. Preferably, the angle range can be set to 45 degrees to 90 degrees.

[0042] The anastomosis device 10 provides a direct and stable device that can create a direct and stable anastomosis path, so that the first pipeline 20 and the second pipeline 30 can be directly anastomosed through the anastomosis device 10, and the blood or lymph fluid in the first pipeline 20 flows smoothly into the second pipeline 30, ensuring the effective anastomosis between the two pipelines, rather than relying entirely on the doctor's sutures for anastomosis, so that the pipeline anastomosis does not require sutures or only requires a small amount of sutures as needed, thereby simplifying the surgical operation process, reducing the stringent requirements on the doctor's operating skills, greatly reducing the difficulty and risk of the operation, reducing the probability of postoperative complications, and improving the patient's recovery speed and treatment effect. Overall, the anastomosis device 10 provides a more convenient and reliable pipeline anastomosis method, greatly enhancing the convenience, safety and effectiveness of pipeline anastomosis.

[0043] The first pipe 20 can be over-supported, expanded and sleeved on the outer wall of the head 100, and then tightened and stably connected to the outer wall of the head 100, or the first pipe 20 can be inserted into the inner cavity of the head 100 for stable connection. The tail 300 is designed to pass through the incision on the side of the second pipe 30 and extend into the second pipe 30 through the incision, and be clamped with the inner wall of the second pipe 30 to achieve a stable connection with the second pipe 30. Alternatively, the second pipe 30 can also be over-supported, expanded and sleeved on the outer wall of the tail 300, and then tightened and stably connected to the outer wall of the tail 300.

[0044] The first conduit 20 may be a first blood vessel, a lymphatic vessel, a lymph node or a lymphatic plexus. If the first conduit 20 is a first blood vessel or a lymphatic vessel, the first conduit 20 may be sleeved on the outer wall of the head 100 or inserted into the inner cavity of the head 100. If the first conduit 20 is a lymph node or a lymphatic plexus, the first conduit 20 is only inserted into the inner cavity of the head 100. The second conduit 30 is a second blood vessel, which is a venous blood vessel.

[0045] The waist 200 is formed by the other end of the head 100 being retracted, so that the inner cavity cross section of the waist 200 is smaller than the inner cavity cross section of the head 100, so that the blood in the second pipeline 30 can be prevented from flowing back into the first pipeline 20, and the liquid in the first pipeline 20 can be gathered to prevent overflow, so that the first pipeline 20 and the second pipeline 30 can be well matched. The other end of the head 100 is retracted to form a snap-fit ​​surface. Further, one end of the tail 300 is also retracted to form the outer wall of the tail 300. The formation of the waist 200 is also conducive to the doctor to suture the first pipeline 20 and the second pipeline 30 at the waist 200, and is conducive to the first pipeline 20 port tightening and lapped on the snap-fit ​​surface at the other end of the head 100, and is conducive to the second pipeline 30 incision lapped on the outer wall of the tail 300, so that the first pipeline 20 and the second pipeline 30 can be anastomosed without sutures, or a small amount of sutures can be performed depending on the situation, thereby greatly reducing the difficulty of pipeline anastomosis.

[0046] Furthermore, the anastomotic device 10 is degradable and made of degradable materials. It can be completely degraded in the human body by itself, thereby avoiding foreign body reactions, causing no thrombosis or calcification in human ducts, and requiring no further surgery for removal, thereby not affecting the wound healing process and the patient's long-term health, and reducing the patient's pain and economic burden. Among them, degradable materials include but are not limited to: magnesium alloy, polylactic acid P, polycaprolactone PC, polylactic acid-glycolic acid ester (PG), polydioxanone PPDO, and the like.

[0047] In order to reduce the degradation time of the anastomotic device 10 and further fix the first pipe 20 to prevent it from falling off, the outer wall of the head 100 is provided with a hollow through the inner cavity, that is, the head 100 is set as a hollow structure. The hollow head 100 can reduce the use area and amount of degradable materials and reduce the degradation time of the anastomotic device 10. At the same time, the hollow of the head 100 can also be used as a needle hole for sutures. When a small amount of sutures are needed, since the first pipe 20 can be set on the outer wall of the head 100, the needle can be threaded through the hollow of the head 100. In this way, the cooperation of the open first pipe 20 and the hollow makes the suture very simple and convenient, which also greatly reduces the difficulty of suturing. Further, the hollow of the head 100 is a diamond hollow, and the radial cross section of the hollow structure of the head 100 is a diamond mesh. The diamond hollow structure is more conducive to suture. Of course, any other hollow shapes such as round and elliptical can also be designed according to needs, which will not be described one by one here.

[0048] Preferably, when the first pipe 20 is connected to the head 100 by being sleeved on the outer wall of the head 100, in order to make the sleeve more stable and provide a larger suture operation space, the clamping surface at the other end of the head 100 is set to be concave in the direction of one end of the head 100, or in other words, the clamping surface at the other end of the head 100 is set to be concave in the direction away from the tail 300.

[0049] Furthermore, in order to enable the first pipe 20 to be more stably connected to the head 100, an external anti-slip component is provided on at least one of the outer wall or the clamping surface of the head 100, which is used to contact the inner wall of the first pipe 20 to generate an anti-slip force. It is conceivable that the external anti-slip component is set as a thorn and protrudes from the outer wall of the head 100. The thorn is facing the direction of the tail 300, that is, it is an inverted setting opposite to the direction in which the first pipe 20 is disengaged. In this way, no obstruction force is generated when the first pipe 20 is sleeved on the outer wall of the head 100, and when the first pipe 20 is displaced or disengaged from the outer wall of the head 100, an anti-slip force is generated by inversion, thereby ensuring that the first pipe 20 can be stably connected to the outer wall of the head 100.

[0050] In order to further reduce the degradation time of the anastomosis device 10 and further fix the first tube 20 to prevent it from falling off, the card surface is also hollowed out to pass through the inner cavity, so as to minimize the material area and usage of the head 100 while maintaining the supporting strength of the head 100. The card interface can also be threaded through the hollow of the card surface when sutures are needed.

[0051] In addition, when the first pipe 20 is connected to the head 100 by being inserted into the inner cavity of the head 100, in order to ensure the stability of the connection and prevent the first pipe 20 from falling out of the inner cavity of the head 100, further, an inner anti-slip component 110 is provided on the inner wall of the head 100. The inner anti-slip component 110 is used to contact the outer wall of the first pipe 20 and apply an anti-slip force to the first pipe 20 to prevent the first pipe 20 from falling out of the inner cavity of the head 100. Optionally, the inner anti-slip component 110 may also be a thorn. Furthermore, the thorn of the inner anti-slip component 110 protrudes from the inner wall of the head 100. The thorn of the inner anti-slip component 110 is oriented in the direction of the tail 300, that is, the inner anti-slip component 110 is an inverted thorn in the opposite direction of the first pipe 20 falling out. In this way, there is no resistance to the insertion of the first pipe 20 into the inner cavity of the head 100, and when the first pipe 20 is out of the inner cavity of the head 100, an anti-dropping force is generated by inversion, thereby ensuring that the first pipe 20 can be stably connected to the inner cavity of the head 100. The inner anti-dropping member 110 faces the tail 300, and the angle between it and the inner wall of the head 100 is between 0 and 60 degrees.

[0052] Furthermore, the inner anti-slipping parts 110 are located on different horizontal lines from at least one adjacent inner anti-slipping part 110 on the inner wall of the head 100; it is understandable that the inner anti-slipping parts 110 are not evenly distributed on the same horizontal plane, but are arranged in a staggered manner. This design increases the chances of the first pipe 20 contacting the inner anti-slipping parts 110 on different planes when entering, provides a more complex engagement path, and forms more levels of engagement points. When the first pipe 20 is inserted into the inner cavity of the head 100, it will contact these different levels of inner anti-slipping parts 110 in turn, thereby achieving a more stable fixing effect, and the staggered arrangement of the inner anti-slipping parts 110 reduces the density on a single plane, avoids excessive local pressure on the first pipe 20, and helps to reduce resistance and potential damage during insertion.

[0053] When the first conduit 20 is inserted into the inner cavity of the head 100, the first conduit 20 may be a lymphatic vessel, a lymph node or a lymphatic plexus, the second conduit 30 is a second blood vessel, and the second blood vessel is a venous blood vessel. The anastomosis device 10 is preferably used to anastomose the lymphatic vessels and venous blood vessels of the human body to treat lymphadenopathy or lymphatic diseases such as Alzheimer's disease. After the first conduit 20 is inserted into the inner cavity of the head 100 from the port of the head 100, it engages with the thorns on the inner wall of the head 100 to achieve a stable connection, which not only simplifies the fixation process of the lymphatic vessel, but also reduces the risk increased by using the suture 112 as a foreign body.

[0054] Preferably, the head 100 includes a first support bar 120 and a second support bar 130, the second support bar 130 is staggeredly connected to the first support bar 120 and forms a plurality of hollow mesh openings 140, and the plurality of hollow mesh openings 140 are mutually engaged with the outer wall of the first pipe 20 when the first pipe 20 is inserted into the head 100, thereby ensuring that the first pipe 20 can be firmly fixed in the inner cavity of the head 100, and this structure allows the anastomotic device 10 to adapt to first pipes 20 of different sizes and shapes, while ensuring close contact between the first pipe 20 and the anastomotic device 10. After the first pipe 20 is inserted into the inner cavity of the head 100, the design of the hollow mesh openings 140 can effectively prevent the first pipe 20 from accidentally falling off or shifting, and can keep its position stable even if it encounters slight movement or pressure changes during surgery.

[0055] Furthermore, an internal anti-slip component 110 is provided at the connection between any first branch 120 and the second branch 130. This structural design allows the head 100 to not only form a plurality of hollow mesh openings 140 consisting of the first branches 120 and the second branches 130 connected in an interlaced manner, but also adds an additional fixing point at each connection point; when the first pipe 20 is inserted into the head 100, these internal anti-slip components 110 will have multiple points of contact with the surface of the first pipe 20, further enhancing the engagement effect between the lymph nodes and the inner wall of the head 100. In this way, even when facing first pipes 20 of different shapes and sizes, the instrument 10 can ensure that they are firmly fixed inside the head 100 to prevent sliding or displacement during surgery.

[0056] Considering that the first conduit 20 will contract and relax with the flow of blood or lymph, long-term contact with hard objects will cause damage to the first conduit 20. In order to avoid damage to the first conduit 20 by the head 100 and facilitate the insertion of the head 100 into the first conduit 20, the outer wall of the end of the head 100 away from the tail 300 is retracted away from the inner wall of the first conduit 20. Further, the retraction is in an arc shape. The retraction distance is not greater than the height of the inner anti-slip member 110, so as to avoid excessive retraction that makes the opening size of the head 100 too small, thereby limiting the insertion of the first conduit 20 into the inner cavity of the head 100.

[0057] In this application, the tail 300 can be set in a variety of structural forms. Specifically, when the first pipe 20 and the second pipe 30 are end-to-end anastomosed, the port of the second pipe 30 passes through the tail 300 and is sleeved on the outer wall of the tail 300, then the cross-section of the tail 300 is circular or elliptical, which is adapted to the inner circumference of the second pipe 30. Optionally, the tail 300 can be a round bowl, an elliptical bowl or a tube, and the opening faces the opposite direction of the head 100. When the first pipe 20 and the second pipe 30 are end-to-side anastomosed, the tail 300 passes through the incision on the side wall of the second pipe 30 and extends into the interior of the second pipe 30, and the outer wall of the tail 300 is clamped with the inner wall of the second pipe 30 for stable connection. Optionally, the shape of the outer wall of the tail 300 is set to adapt to the inner wall of the second pipe 30. Specifically, the cross-section of the tail 300 along the axial direction of the second pipe 30 can be circular, elliptical, bar-shaped, square, etc. Preferably, the tail portion 300 may be in a round bowl shape, an elliptical bowl shape, an arc-shaped sheet, a strip, a rectangle or a tube shape, etc. When the tail portion 300 is in an arc-shaped sheet, a strip, a rectangle or a tube shape, the tail portion 300 may have a certain length, and the length is along the axial direction of the second pipe 30, so that the tail portion 300 is more convenient to extend into the interior of the second pipe 30, and at the same time, the tail portion 300 can have a longer clamping area with the second pipe 30, which is conducive to connection and not easy to be separated, and there is no need for sewing needle operation.

[0058] In order to reduce the degradation time of the anastomotic device 10 and further fix the second pipe 30 to prevent it from falling off, the tail 300 is provided with a through hollowing, that is, the tail 300 is set as a hollow structure, so as to minimize the material area and usage of the tail 300 while maintaining the support strength of the tail 300. When sutures are needed, the hollowing of the tail 300 is used to thread the needle, making it very easy and simple to suture, providing convenience for suture. The hollowing design of the head 100 and the tail 300 greatly reduces the use and area of ​​materials, and also provides convenience for doctors to suture (providing convenient sutures for doctors, and sutures are actually not required), so that the degradation time of the entire anastomotic device 10 is greatly shortened, and anastomosis becomes extremely convenient.

[0059] Considering that the second pipe 30 will contract and relax with the flow of blood, long-term contact with hard objects will cause damage to the second pipe 30. In order to avoid damage to the second pipe 30 by the tail 300, a selected part or all of the side edges of the tail 300 are bent in a direction away from the inner wall of the second pipe 30. Optionally, the two sides of the tail 300 in the circumferential direction of the second pipe 30 are bent in a direction away from the inner wall of the second pipe 30, and the two sides of the tail 300 in the axial direction of the second pipe 30 are also bent in a direction away from the inner wall of the second pipe 30. Alternatively, all the sides of the tail 300 are bent in a direction away from the inner wall of the second pipe 30. That is, the two sides of the tail 300 in the circumferential direction of the second pipe 30 are bent to reduce the contact strength with the inner wall of the second pipe 30 or to prevent the tail 300 from contacting the inner wall of the second pipe 30. The two sides of the tail 300 in the axial direction of the second pipe 30 are also bent to reduce the contact strength with the inner wall of the second pipe 30 or to prevent the tail 300 from contacting the inner wall of the second pipe 30 for a long time with a high intensity, thereby protecting the second pipe 30.

[0060] In one of the methods, in order to enable the tail 300 to be stably connected to the second pipe 30 and the tail 300 to be designed to be hollow and to minimize the contact with the inner wall of the second pipe 30, the tail 300 is in the shape of a round bowl or an elliptical bowl. In this way, when the second pipe 30 is clamped on the waist 200, the open side of the tail 300 is retracted into a bowl or ellipse, so that the outer wall of the tail 300 is an arc-shaped outer wall, and the inner wall of the second pipe 30 hardly contacts the open side of the tail 300, so that the inner wall of the second pipe 30 is hardly damaged, thereby protecting the second pipe 30 well.

[0061] In another embodiment, in order to stably connect the tail 300 to the second pipe 30, the tail 300 adopts a strip-shaped structure, and further has a long strip-shaped structure, which can be an arc-shaped sheet, a semi-tube, a long strip or a rectangle, so that the tail 300 can easily pass through the cutout of the second pipe 30, which makes the tail 300 have a larger length in the axial direction of the second pipe 30. The larger length increases the overlap area and length of the tail 300 and the inner wall of the second pipe 30, so that the tail 300 is not easy to escape from the second pipe 30, thereby stably connecting the second pipe 30, and no stitches are required or a small amount of stitches are required. Further, the radial direction of the tail 300 is parallel to the radial direction of the second pipe 30. In addition, in order to avoid damage to the inner wall of the second pipe 30, the two sides of the tail 300 in the circumferential direction of the second pipe 30 are bent away from the second pipe 30, and the two sides of the tail 300 in the axial direction of the second pipe 30 are also bent away from the second pipe 30.

[0062] In another embodiment, in order to stably connect the tail 300 to the second pipe 30 without the need for a suture operation, the tail 300 is at least partially tubular. Optionally, the tail 300 is a tubular with a complete circumference or an incomplete circumference. The tail 300 is a circular tube, an elliptical tube, a partial circular tube, a partial elliptical tube, etc.

[0063] Preferably, the tail 300 can be all tubular or at least the two ends are tubular. At this time, the two end openings of the tail 300 are all set to oblique openings (i.e., the two end pipe openings of the tail 300 are oblique openings). The oblique opening is conducive to the tail 300 passing through the incision of the second pipeline 30, so that the incision does not need to be opened very large. The tubular tail 300 can be fully extended into the inside of the second pipeline 30, and is adapted to the entire inner cavity of the second pipeline 30. The complete supporting surface plays a good support, so that the tail 300 cannot be easily disengaged from the second pipeline 30, thereby not having to carry out sutures. Further, a tail anti-slipping piece 310 is arranged on the outer wall at both ends of the tail 300, and the second pipeline 30 is further protected from slipping and displacement. The tail anti-slipping piece 310 can be specifically set to a thorn, and the thorns at both ends are all toward the middle of the tail 300, each forming an inverted structure, so that the tail 300 and the second pipeline 30 are better stably connected, and displacement or slipping will not occur. Furthermore, both ends of the tail portion 300 are bent away from the second pipe 30 to reduce the contact strength with the inner wall of the second pipe 30 or to prevent contact.

[0064] The anastomosis device 10 provides a direct and stable device, so that the first pipeline 20 and the second pipeline 30 can be directly anastomosed through the anastomosis device 10, rather than relying solely on the doctor's sutures for anastomosis, so that the pipeline anastomosis does not require sutures or only requires a small amount of sutures as needed, thereby simplifying the surgical operation process, reducing the stringent requirements on the doctor's operating skills, greatly reducing the difficulty and risk of the operation, reducing the probability of postoperative complications, and improving the patient's recovery speed and treatment effect. The anastomosis device 10 provides a more convenient and reliable pipeline anastomosis method, greatly enhancing the convenience, safety and effectiveness of pipeline anastomosis.

[0065] The formation of the waist 200 can prevent the blood in the second pipe 30 from flowing back into the first pipe 20, and can also gather the liquid in the first pipe 20 to prevent overflow, so that the first pipe 20 and the second pipe 30 can be well anastomosed, which is more conducive to the doctor to sew the first pipe 20 and the second pipe 30 at the waist 200, and facilitate the tightening and clamping of the port of the first pipe 20 on the other end of the head 100, and facilitate the clamping of the incision of the second pipe 30 on the tail 300, so that the anastomosis of the first pipe 20 and the second pipe 30 can be done without sutures, or only a small amount of sutures are required depending on the situation, thereby greatly reducing the difficulty of pipe anastomosis.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An anastomotic device, characterized in that: The anastomotic device is degradable and includes: a head, a waist and a tail; the head is a hollow tube, one end of which can be connected to a first pipe, the waist is hollow and arranged between the head and the tail, respectively connecting the other end of the head and one end of the tail, the waist is formed by the inward retraction of the other end of the head, the other end of the tail is adapted to be connected to the inner wall of the second pipe, the head, waist and tail are connected, and the cross-section of the tail is strip-shaped.

2. The anastomotic device according to claim 1, characterized in that: The tail section is in the shape of an elongated strip.

3. The anastomotic device according to claim 1 or 2, characterized in that: The tail portion may be in the shape of an arc sheet, a semi-tube, a rectangle or a long strip.

4. The anastomotic device according to claim 1, characterized in that: The first pipe can be enlarged by over-supporting and then sleeved on the outer wall of the head, or the first pipe can be inserted into the inner cavity of the head for stable connection; the tail can pass through the incision on the side of the second pipe and extend into the interior of the second pipe through the incision to be clamped with the inner wall of the second pipe.

5. The anastomotic device according to claim 1, characterized in that: The other end of the head is retracted inwardly to form a clamping surface.

6. The anastomotic device according to claim 1, characterized in that: The outer wall of the head is provided with a hollow which penetrates the inner cavity.

7. The anastomotic device according to claim 6, characterized in that: The hollowing out of the head is a prism-shaped hollowing out.

8. The anastomotic device according to claim 5, characterized in that: The clamping surface is concave toward one end of the head.

9. The anastomotic device according to claim 5, characterized in that: An external anti-dropping component is arranged on at least one of the outer wall of the head or the clamping surface.

10. The anastomotic device according to claim 1, characterized in that: The radial direction of the tail portion is parallel to the radial direction of the second pipe.

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