Gastrointestinal, intestinal or biliary intestinal anastomosis device for bilateral lateral opening

Abstract

The present invention belongs to the technical field of anastomotic devices, and discloses a gastrointestinal, intestinal or biliary intestinal anastomotic device for bilateral lateral openings, which is provided with two anastomotic rings, and an anastomotic guide short tube is provided on the opposite side of each anastomotic ring, the two guide short tubes are sleeved, and an annular cavity for accommodating a larger guide short tube is provided on the smaller guide short tube, an anastomotic ring is extended on the outer wall of the annular cavity, and the other anastomotic ring is directly extended from the outer wall of the larger guide short tube, and a snap-fit ​​protrusion is provided on the outer side of one of the anastomotic rings, and the snap-fit ​​protrusion is positioned below the other anastomotic ring during anastomosis; the two layers of guide short tubes are adapted to each other, and after construction, the liquid moves from one end of the annular cavity to the other end. After the above-mentioned device is anastomosed, a smooth channel with effective drainage can be constructed, and because the curved guidance of the snap-fit ​​protrusion forms an anastomotic tissue containing a larger anastomotic area and having a curve, the anastomotic tissue is prevented from falling out from between the anastomotic rings.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular to the technical field of gastrointestinal or enteroenteric anastomosis devices, and specifically is a gastrointestinal, enteroenteric or biliary enteroenteric anastomosis device for bilateral lateral openings. Background Art

[0002] In clinical practice, for the anastomosis between the stomach and intestine, intestine and intestine, and bile duct and intestine, in many cases, the anastomosis is not performed after cutting along the longitudinal axis of the gastrointestinal tract. There are often cases where two side openings are constructed on the side of the stomach or intestine. This type of opening is difficult to complete with a stapler that uses a stapler. Most of them require invasive vision, with the help of a cutting closure device to construct a side incision, and then the doctor manually sutures the incision with a needle and sutures. However, because the incision is on the side, the suture operation is complex and difficult to operate. Even if a circular gastrointestinal stapler is used for side-to-side anastomosis, an incision needs to be opened on the healthy side of the stomach or intestine to insert the circular stapler. The addition of an incision increases the risk of gastrointestinal leakage.

[0003] How to achieve fully automatic anastomosis of gastrointestinal or intestinal anastomosis with two side openings is a technical problem that needs to be solved urgently in clinical practice. The present invention provides a gastrointestinal, intestinal or biliary intestinal anastomosis instrument for bilateral side openings. Summary of the invention

[0004] In the prior art, there is an instrument for anastomosis of longitudinal incisions, which is provided with two inner ring structures and outer ring structures that are connected and locked to each other, and a hemispherical structure is provided on both the inner ring structure and the outer ring structure, and the tube wall is supported by the support of the hemispherical structure, and part of the tissue covers the hemispherical structure, and finally the inner and outer ring structures are connected by different locking methods set on the middle, and the intestinal wall is anastomosed by the contacting hemispherical structures, such as CN200820087566.2 A non-absorbable disintegrable anastomotic clip for gastrointestinal anastomosis surgery and 201720318669.4 a disintegrable gastrointestinal stapler; The prior art solutions are more used for end-to-end anastomosis, the hemispherical structure plays a supporting and final tissue anastomosis role, and the inner and outer ring structures play a docking and locking role, but for many years this solution has not been clinically applied to the anastomosis direction of bilateral ports, mainly because this solution only borrows the thin-walled hemispherical structure for anastomosis. In order to achieve the anastomosis of the inner ring and the outer ring, it is more necessary to set notches and corresponding clamping protrusions extending into the notches on the inner ring and the outer ring structure. For the surgical effect of end-to-end anastomosis, its material transportation still depends on the original gastrointestinal lumen, and its stapler only completes the end-to-end anastomosis. The entire material transportation direction will not change significantly, so there will be no damage to the tube during transportation. The cavity causes too much pressure, and the requirements for the channels of the inner and outer rings are not high; however, for the anastomosis surgery of the bilateral lateral openings, the cavity support is not required during the process, and the characteristics of the hemispherical structure are easy to expand the size of the constructed wound during insertion, and the channel after the anastomosis of the bilateral lateral openings mainly depends on the anastomosis instrument. If the channel gap constructed by the anastomosis instrument is easy to cause a large impact on the anastomotic position, if the existing hemispherical thin-walled anastomosis method is used, it will be very easy for the anastomotic tissue to fall out of the anastomotic instrument because the area involved in the anastomosis tissue is very small, thereby forming anastomotic leakage. This is also the reason why the existing technology cannot be applied to the bilateral openings. The present invention aims at the characteristics of the anastomosis surgery of the bilateral lateral openings of the gastrointestinal tract or the intestine, and solves the technical problems such as the small anastomosis area, the easy fallout of the anastomotic tissue, the unclosed channel of the anastomosis instrument, and the easy impact on the anastomotic position.

[0005] The specific idea is to set two anastomotic rings, and an anastomotic guide short tube is set on the opposite side of each anastomotic ring, the two guide short tubes are sleeved, and an annular cavity for accommodating the larger guide short tube is set on the smaller guide short tube, and an anastomotic ring extends from the outer wall of the annular cavity, and the other anastomotic ring directly extends out from the outer wall of the larger guide short tube, and a snap-fit ​​protrusion is set on the outer side of one of the anastomotic rings, so that the snap-fit ​​protrusion is positioned under the other anastomotic ring during anastomosis; the two layers of guide short tubes are adapted to each other and have a cylindrical structure, and a closed guide channel is constructed after anastomosis.

[0006] The anastomotic ring corresponding to the smaller guide short tube is defined as the first anastomotic ring, and the anastomotic ring corresponding to the larger guide short tube is defined as the second anastomotic ring, and the liquid flows along the first anastomotic ring to the second anastomotic ring.

[0007] Through the above-mentioned setting, an anastomotic device with an effective drainage channel can be constructed, and the clamping structure is set outside the anastomotic ring, which can effectively avoid affecting the airtightness of the drainage channel. The setting of the guide short tube is not only for constructing a closed drainage channel. The setting of the guide short tube in the relative position area can also achieve the effect of clamping the anastomotic ring for setting, and can also provide a suppository area for initially fixing the anastomotic ring to a lateral opening position, so as to avoid the anastomotic ring being displaced into the pipeline after being set in the side hole; in addition, the setting of the guide short tube can find the direction faster to complete the anastomosis. The clamping protrusion is set on the periphery of the anastomotic ring. When clamping, the clamping protrusion drives the double-layer intestinal wall to be anastomosed to bend inward, so as to form an anastomotic tissue containing a larger anastomotic area and with a bend, which can avoid the problem of anastomotic leakage caused by the anastomotic tissue and the anastomotic device coming out. In addition, a smooth passage without a gap is constructed by a smaller guide short tube and a larger guide short tube, which can further prevent the liquid in the digestive cavity from entering the anastomotic position and interfering with it.

[0008] The specific technical solution is: a gastrointestinal, intestinal or biliary intestinal anastomosis device for bilateral lateral openings, comprising:

[0009] The first anastomotic structure comprises a first anastomotic ring and a first short guide tube, wherein the first anastomotic ring is integrally connected with the first short guide tube, and the first anastomotic ring is an annular structure extending outward from the outer side wall of the first short guide tube;

[0010] The second anastomotic structure comprises a second anastomotic ring and a second guide short tube. An anastomotic ring setting tube is arranged outside the second guide short tube. The anastomotic ring setting tube and the second guide short tube are connected at the end. An annular cavity is formed between the first guide short tube and the anastomotic ring setting tube. The second anastomotic ring is an annular structure extending outward from the outer wall of the anastomotic ring setting tube. The inner diameter of the first guide short tube is consistent with the outer diameter of the second guide short tube. When combined, the annular cavity accommodates the first guide short tube. There is an anastomotic position between the first anastomotic ring and the second anastomotic ring. The second guide short tube is inserted into the first guide short tube and moves along the axis of the first guide short tube to guide the first anastomotic ring and the second anastomotic ring to approach each other until they reach the anastomotic position and terminate. At the same time, the first guide short tube is inserted into the annular cavity.

[0011] The anastomotic locking structure is arranged on the first anastomotic ring or the second anastomotic ring and is located in the edge area. When the first anastomotic ring and the second anastomotic ring reach the anastomotic position, the position of the first anastomotic ring and the second anastomotic ring is locked.

[0012] Furthermore, the first end of the annular cavity is an open end allowing the first guide short tube to enter, and the second end is a completely closed end connected by the second guide short tube and the anastomotic ring setting tube; the first anastomotic structure is set to the first opening position, and the second anastomotic structure is set to the second opening position, and the liquid in the digestive cavity flows from the first anastomotic structure to the second anastomotic structure; the purpose of this setting is to prevent the liquid flowing in the digestive tract from entering between the layers of structure, and to ensure that it continues to flow to the rear end digestive cavity through the lumen of the innermost second guide short tube.

[0013] Furthermore, when the first anastomotic ring and the second anastomotic ring are in the anastomotic position, the second guide short tube is flush with the end of the first guide short tube, or slightly exceeds the end of the first guide short tube. This arrangement can further effectively avoid the size difference between the second guide tube and the first guide tube, which causes the liquid to flow into the annular cavity through the gap when the pressure is too high.

[0014] Furthermore, the anastomotic locking structure is an elastic locking structure, which includes multiple groups of locking units, each group of locking units includes a vertical section and a non-return section with an angle of 60-90° to the vertical section, the non-return section includes a non-return surface, when the first anastomotic ring and the second anastomotic ring are in the anastomotic position, the vertical section is arranged on the outside of the second anastomotic ring or the first anastomotic ring, and the non-return surface of the non-return section is located on the outer bottom surface of the second anastomotic ring or the first anastomotic ring, so as to achieve the non-return purpose. Through this arrangement, the effect of wrapping the anastomosis without the locking anastomotic structure on the inner side from the edge of the anastomotic ring with the locking anastomotic structure can be achieved.

[0015] Furthermore, an inclined surface is provided on the check segment, and an inclined guide surface is provided on the anastomotic ring which is not provided with an anastomotic locking structure, for guiding the check segment to lock from one side to the other side, and the inclined guide surface acts on the inclined surface; this surface setting can greatly reduce the damage to the tube wall of the anastomotic part during the locking process.

[0016] Furthermore, the inner and outer diameters of the annular cavity are greater than the inner and outer diameters of the first guiding short tube, so as to ensure that the anastomotic tissue entering the annular cavity along with the first guiding short tube can be accommodated.

[0017] Furthermore, in order to avoid tissue necrosis, the design ensures that only the areas corresponding to the two anastomotic rings are tightly fitted, allowing tissue adhesion and growth, while the pressure in other anastomotic areas is controlled by structural settings to a pressure state that will not cause adhesion and growth.

[0018] Alternatively, an anti-adhesion material is provided to be coated on the anastomotic tissue in the unnecessary adhesion anastomotic region, thereby ultimately achieving the purpose of adhesion anastomosis only in the required region.

[0019] Furthermore, considering that there is no absorbable bile-intestinal stapler for automatic anastomosis in clinical practice, the stapler is set to be an absorbable stapler, specifically, the entire stapler is made of an absorbable material, and the absorbable material is a polyurethane elastomer, and the structural formula is as follows:

[0020]

[0021] Wherein, U is a diisocyanate residue; R 1 is a soft segment, CUR is a residue of curcumin or its derivatives; x is any integer from 10 to 100;

[0022] The structural formula of CUR is as follows:

[0023]

[0024] R 2 =H, -CH3, -CH2-CH3, -CH2-CH2-CH3, -CH(CH3)-CH3, -CH2-CH2-CH2-CH3,

[0025] -CH2-CH(CH3)-CH3, -C(CH3)2-CH3, etc., a straight chain or branched alkyl group having no more than 4 carbon atoms.

[0026] The soft segment is a diol prepolymer residue obtained by polymerization of ε-caprolactone monomer. Preferably, the average molecular weight of the soft segment is 1 to 10 kg / mol.

[0027] The diisocyanate residue is formed by the reaction of diisocyanate and a prepolymer corresponding to the soft segment, and the diisocyanate is one or two or more of 4,4-dimethylmethane diisocyanate, 1,6-hexamethylene diisocyanate, L-lysine diisocyanate, and isophorone diisocyanate.

[0028] Beneficial effects of the present invention:

[0029] The anastomotic area of ​​the anastomotic tissue constructed by the above structure is larger. The anastomotic area involves the area starting from between the two anastomotic rings and following the anastomotic locking structure into the other side of the anastomotic ring. The tissue anastomotic area is large, and the anastomotic area also includes bends with changing angles, which further achieves the stability of the constructed anastomotic tissue and prevents the problem of the anastomotic tissue falling out of the anastomotic ring due to excessive local pressure.

[0030] By coordinating the setting of the guiding short tube and the annular cavity, an effective smooth passage without gaps can be constructed, which can further prevent the liquid in the digestive cavity from entering the anastomotic position and causing interference therewith.

[0031] The anastomosis device made of polyurethane elastomer material can make the anastomosis of the anastomosis device smoother and make the anastomosis of the tissues effective. Because of its elasticity, it will not cause excessive strong squeezing force on the anastomosis surface to cause unnecessary tissue necrosis. In addition, because of the elasticity, the second drainage tube will have effective expansion ability, reducing the time for the patient to eat normally after the anastomosis. In addition, because the material is degradable, it can degrade by itself after the tissues are anastomosed, avoiding the harm of the patient from coming out again. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of a longitudinal cross-sectional structure of an embodiment of the present invention in which an anastomotic locking structure is disposed on a second anastomotic structure, showing two anastomotic structures in a separated state;

[0033] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the two anastomotic structures in the combined state in which the anastomotic locking structure is arranged on the second anastomotic structure in the embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the longitudinal cross-sectional structure of the combined state of two anastomotic structures in an embodiment of the present invention with a first balancing short tube and an anastomotic locking structure arranged on a second anastomotic structure;

[0035] Figure 4 It is a schematic structural diagram of the two anastomotic structures in a separated state in an embodiment of the present invention with a first balancing short tube and an anastomotic locking structure arranged on a second anastomotic structure;

[0036] Figure 5 It is a schematic diagram of a longitudinal cross-sectional structure of the combined state of two anastomotic structures of an embodiment of the present invention with a first balancing short tube, a second balancing short tube and an anastomotic locking structure arranged on the second anastomotic structure;

[0037] Figure 6 It is a schematic structural diagram of two anastomotic structures in a separated state in an embodiment of the present invention with a first balancing short tube and an anastomotic locking structure arranged on the first anastomotic structure;

[0038] Figure 7 It is a structural schematic diagram of the combined state of two anastomotic structures in an embodiment of the present invention with a first balancing short tube and an anastomotic locking structure arranged on the first anastomotic structure;

[0039] Figure 8 It is a schematic diagram of the longitudinal cross-sectional structure of the combined state of two anastomotic structures in an embodiment of the present invention with a first balancing short tube and an anastomotic locking structure arranged on the first anastomotic structure;

[0040] Fig. 9It is a schematic diagram of the longitudinal cross-sectional structure of the combined state of two anastomotic structures in an embodiment of the present invention in which a first balancing short tube is provided for clamping anastomotic tissue and an anastomotic locking structure is arranged on a second anastomotic structure;

[0041] Fig.10 It is a schematic diagram of the longitudinal cross-sectional structure of the clamped anastomotic tissue combination state of the present invention;

[0042] Description of main reference numerals

[0043] 11. First anastomotic ring; 12. First guide short tube; 13. First balancing short tube; 21. Second anastomotic ring; 22. Second guide short tube; 23. Annular cavity; 24. Anastomotic ring setting tube; 25. Second balancing short tube; 31. Vertical section; 32. Check section; 321. Check surface; 322. Inclined surface; 323. Inclined guide surface; 4. Anastomotic tissue. DETAILED DESCRIPTION

[0044] Referring to 1-10, a specific embodiment of a gastrointestinal, intestinal or biliary intestinal anastomosis device for bilateral lateral openings is that the anastomosis device includes a first anastomotic structure, including a first anastomotic ring 11 and a first guide short tube 12, the first anastomotic ring 11 is integrally connected with the first guide short tube 12, and the first anastomotic ring 11 is an annular structure extending outward from the outer side wall of the first guide short tube 12;

[0045] The second anastomotic structure comprises a second anastomotic ring 21 and a second guide short tube 22. An anastomotic ring setting tube 24 is arranged outside the second guide short tube 22. The anastomotic ring setting tube 24 is connected to the second guide short tube 22 at the end. An annular cavity 23 is formed between the first guide short tube 12 and the anastomotic ring setting tube 24. The second anastomotic ring 21 is an annular structure extending outward from the outer wall of the anastomotic ring setting tube 24. The inner diameter of the first guide short tube 12 is consistent with the outer diameter of the second guide short tube 22. When combined, the annular cavity 23 accommodates the first guide short tube 12. There is an anastomotic position between the first anastomotic ring 11 and the second anastomotic ring 21. The second guide short tube 22 is inserted into the first guide short tube 12 and moves along the axis of the first guide short tube 12 to guide the first anastomotic ring 11 and the second anastomotic ring 21 to approach each other until they reach the anastomotic position and terminate. At the same time, the first guide short tube 12 is inserted into the annular cavity 23.

[0046] The anastomotic locking structure is arranged on the first anastomotic ring 11 or the second anastomotic ring 21 and is located in the edge area. When the first anastomotic ring 11 and the second anastomotic ring 21 reach the anastomotic position, the position of the first anastomotic ring 11 and the second anastomotic ring 21 is locked.

[0047] The first anastomotic ring 11 and the second anastomotic ring 21 are circular ring structures, and the first short guide tube 12 and the second short guide tube 22 are circular tubes.

[0048] A more preferred embodiment is to refer to Figure 2 , Figure 3 , Figure 5 and Figure 8 ; The first end of the annular cavity 23 is an open end allowing the first guide short tube 12 to enter, and the second end is a completely closed end connected by the second guide short tube 22 and the anastomotic ring setting tube 24; the first anastomotic structure is set to the first opening position, and the second anastomotic structure is set to the second opening position, and the liquid in the digestive cavity flows from the first anastomotic structure to the second anastomotic structure; the purpose of this setting is to prevent the liquid flowing in the digestive tract from entering between the layers of the structure, and to ensure that the liquid continues to flow to the rear end digestive cavity through the lumen of the innermost second guide short tube 22.

[0049] A more preferred embodiment is to refer to Figure 3 and Figure 8 When the first anastomotic ring 11 and the second anastomotic ring 21 are in the anastomotic position, the second guide short tube 22 is flush with the end of the first guide short tube 12, or slightly exceeds the end position of the first guide short tube 12. This arrangement can further effectively avoid the size difference between the second guide tube and the first guide tube, which causes the liquid to flow into the annular cavity 23 through the gap when the pressure is too high.

[0050] A more preferred embodiment is to refer to Figure 3 , Figure 4 , Figure 6 and Figure 7 The anastomotic locking structure is an elastic locking structure, which includes a plurality of locking units, each of which includes a vertical section 31 and a non-return section 32 with an angle of 60-90° with the vertical section 31, and the non-return section 32 includes a non-return surface 321. When the first anastomotic ring 11 and the second anastomotic ring 21 are in the anastomotic position, the vertical section 31 is arranged on the outside of the second anastomotic ring 21 or the first anastomotic ring 11, and the non-return surface 321 of the non-return section 32 is located on the outer bottom surface of the second anastomotic ring 21 or the first anastomotic ring 11, so as to achieve the non-return purpose. Through this arrangement, the effect of wrapping the anastomotic ring without the locking anastomotic structure on the inner side from the edge of the anastomotic ring provided with the locking anastomotic structure can be achieved.

[0051] A more preferred embodiment is to arrange multiple groups of locking units around the first anastomotic ring 11 or the second anastomotic ring 21, and the angle of the arc area of ​​each locking unit itself is greater than 10° and less than 30°; this arrangement can ensure that each locking unit has a sufficient arc to ensure the stability of the locking unit structure, and can also ensure that enough locking units are arranged to ensure the continuity of the locked intestinal anastomosis. Specifically, Figure 1-5 This is a diagram showing an implementation of a locking unit disposed on the second anastomotic ring 21; Figure 6-8 This is a diagram showing an implementation in which the locking unit is arranged on the first anastomotic ring 11 .

[0052] A more preferred embodiment is to evenly arrange 6-15 groups of locking units, and further the interval angle between every two locking units is the same as the arc angle of the locking unit, wherein 9 groups are preferably arranged, and the arc angle of each locking unit is 10-15°.

[0053] A more preferred embodiment is that an inclined surface 322 is provided on the check segment 32, and an inclined guide surface 323 for guiding the check segment 32 to lock from one side to the other side is provided on the anastomotic ring without an anastomotic locking structure, and the inclined guide surface 323 acts on the inclined surface 322; this surface setting can greatly reduce the damage to the tube wall of the anastomotic part during the locking process.

[0054] A more preferred embodiment is to refer to Fig. 9 The inner and outer diameters of the annular cavity 23 are larger than the inner and outer diameters of the first guide short tube 12, so as to ensure that the anastomotic tissue 4 entering the annular cavity 23 along with the first guide short tube 12 is accommodated. Therefore, the length of the first guide short tube 12 needs to be shortened as much as possible, and the length of the first guide short tube 12 is set at 3-8 mm. The length of the annular cavity 23 is adapted to the first guide short tube 12, so that the size of the tissue entering the annular cavity 23 can be reduced, and an effective suture tethering pile can be formed.

[0055] A more preferred embodiment is that, in order to avoid excessive necrosis of tissue, the design ensures that only the areas corresponding to the two anastomotic rings are tightly fitted, allowing the tissue to adhere and grow, while the pressure in other anastomotic areas is controlled by structural settings to a pressure state where adhesion and growth will not occur.

[0056] Alternatively, an anti-adhesion material is provided to coat the anastomotic tissue 4 in the unnecessary adhered anastomotic region, thereby ultimately achieving the purpose of adhesion and anastomosis only in the required region.

[0057] A more preferred embodiment is to refer to Figure 3 , Figure 5 and Figure 6 ; On the other side of the first anastomotic ring 11, the first guide short tube 12 is extended in the opposite direction to form a first balancing short tube 13, so that the entire first anastomotic structure forms a relatively balanced structure. The setting of the balancing structure can facilitate the selection of the first anastomotic structure. Figure 3 and Figure 5 This is a diagram showing an implementation of a locking unit disposed on the second anastomotic ring 21; Figure 6 This is a diagram showing an implementation in which the locking unit is arranged on the first anastomotic ring 11 .

[0058] In a more preferred embodiment, when the first anastomotic ring 11 and the second anastomotic ring 21 are in the anastomotic position, the end of the second short tube is flush with the first balancing short tube 13 .

[0059] A more preferred embodiment is to refer to Figure 5 In order to maintain balance, the second guide short tube 22 is extended in the opposite direction on the other side of the second anastomotic ring 21 to form a second balance short tube 25. The second balance short tube 25 can also be served by the anastomotic ring setting tube 24, so that the second anastomotic structure is balanced as a whole.

[0060] In a more preferred embodiment, the anastomotic device is made entirely of absorbable material, and the absorbable material is a polyurethane elastomer, and the structural formula is as follows:

[0061]

[0062] Wherein, U is a diisocyanate residue; R 1 is a soft segment, CUR is a residue of curcumin or its derivatives; x is any integer from 10 to 100;

[0063] The structural formula of CUR is as follows:

[0064]

[0065] R 2 =H, -CH3, -CH2 -CH3, -CH2 -CH2 -CH3, -CH(CH3 )-CH3, -CH2 -CH2 -CH2 -CH3,

[0066] -CH2 -CH(CH3 )-CH3, -C(CH3 )2 -CH3, etc., straight chain or branched chain alkyl groups with no more than 4 carbon atoms.

[0067] The soft segment is a diol prepolymer residue obtained by polymerization of ε-caprolactone monomer. Preferably, the average molecular weight of the soft segment is 1 to 10 kg / mol.

[0068] The diisocyanate residue is formed by the reaction of diisocyanate and a prepolymer corresponding to the soft segment, and the diisocyanate is one or two or more of 4,4-dimethylmethane diisocyanate, 1,6-hexamethylene diisocyanate, L-lysine diisocyanate, and isophorone diisocyanate.

[0069] By preparing the anastomosis device with polyurethane elastomer material, the anastomosis of the anastomosis device can be made smoother, and the anastomosis of the anastomosis tissue 4 can be effectively anastomosed. Because of its elasticity, it will not cause excessive strong squeezing force on the anastomosis surface to cause unnecessary tissue necrosis. In addition, because of the elasticity, the second drainage tube will have effective expansion ability, reducing the time for the patient to eat normally after the anastomosis. In addition, because the material is degradable, it can degrade by itself after the tissue anastomosis, avoiding the harm of the patient from coming out again.

[0070] When using it, first expose the surgical field of view in an invasive way, find the gastrointestinal tract or intestine that needs to be anastomosed, find the appropriate lateral position, then temporarily tie up the digestive cavity in the distal area, and then make an opening on each side that needs to be anastomosed;

[0071] Secondly, the 360-degree seams on the two opening edges are tightenable with threaded openings;

[0072] Then, the anastomotic ring is sent into the digestive cavity corresponding to the opening by means of clamping forceps or holding a short guiding tube; when sending it in, the opening can be made into a straight line, and the anastomotic ring is passed through the opening into the digestive cavity by tilting the anastomotic ring;

[0073] In order to prevent the anastomotic ring from entering the digestive cavity, once the anastomotic ring has completely entered the digestive cavity, the opening of the tape is pulled to tighten it on the guiding short tube;

[0074] After both anastomotic rings are fixed to the corresponding guide short tubes, the guide short tube 2 is inserted into the guide short tube 1 and slowly moves toward each other along the guide short tube 1. During the process, because the second opening is fixed on the outside of the second guide short tube 22, the first guide short tube 12 needs to move into the annular cavity 23 after moving to this position, so that the anastomotic tissue 4 around the connecting opening can enter the annular cavity 23. In addition, when the inclined surface 322 of the anastomotic locking structure moves along the inclined guide surface 323, it will also drive the double-layer anastomotic tissue 4 to follow it into the bottom of the second anastomotic ring 21 or the first anastomotic ring 11. Because the whole is made of elastic material, the double-layer anastomotic tissue 4 is accommodated between the anastomotic locking structure and the second anastomotic ring 21 or the first anastomotic ring 11 during the anastomotic locking process, and the anastomotic locking structure is tilted to ensure sufficient accommodation space.

[0075] refer to Fig. 9 and Fig.10 The anastomotic area of ​​the anastomotic tissue 4 constructed by the above structure is relatively large. The anastomotic area involves the anastomotic area starting from between the two anastomotic rings and following the anastomotic area on the other side of the anastomotic ring of the anastomotic locking structure. The tissue anastomotic area is large, and the anastomotic area also includes bends with changing angles, which further achieves the stability of the constructed anastomotic tissue 4 and will not cause the problem of the anastomotic tissue 4 falling out of the anastomotic ring due to excessive local pressure.

[0076] The technical solutions in the embodiments of the present invention are clearly and completely described above through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A gastrointestinal, intestinal or biliary intestinal anastomosis device for bilateral lateral openings, characterized in that: These include, The first anastomotic structure comprises a first anastomotic ring and a first short guide tube, wherein the first anastomotic ring is integrally connected with the first short guide tube, and the first anastomotic ring is an annular structure extending outward from the outer side wall of the first short guide tube; The second anastomotic structure comprises a second anastomotic ring and a second guide short tube. An anastomotic ring setting tube is arranged outside the second guide short tube. The anastomotic ring setting tube and the second guide short tube are connected at the end. An annular cavity is formed between the first guide short tube and the anastomotic ring setting tube. The second anastomotic ring is an annular structure extending outward from the outer wall of the anastomotic ring setting tube. The inner diameter of the first guide short tube is consistent with the outer diameter of the second guide short tube. When combined, the annular cavity accommodates the first guide short tube. There is an anastomotic position between the first anastomotic ring and the second anastomotic ring. The second guide short tube is inserted into the first guide short tube and moves along the axis of the first guide short tube to guide the first anastomotic ring and the second anastomotic ring to approach each other until they reach the anastomotic position and terminate. At the same time, the first guide short tube is inserted into the annular cavity. The anastomotic locking structure is arranged on the first anastomotic ring or the second anastomotic ring and is located in the edge area. When the first anastomotic ring and the second anastomotic ring reach the anastomotic position, the position of the first anastomotic ring and the second anastomotic ring is locked.

2. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 1, characterized in that: The first end of the annular cavity is an open end allowing the first guide short tube to enter, and the second end is a completely closed end connected by the second guide short tube and the anastomotic ring setting tube, and the liquid flows from the first anastomotic structure to the second anastomotic structure.

3. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 1, characterized in that: When the first anastomotic ring and the second anastomotic ring are in the anastomotic position, the second short guide tube is flush with the end of the first short guide tube, or slightly exceeds the end position of the first short guide tube.

4. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 1, characterized in that: The anastomotic locking structure is an elastic locking structure, which includes multiple groups of locking units. Each group of locking units includes a vertical section and a non-return section with an angle of 60-90° to the vertical section. The non-return section includes a non-return surface. When the first anastomotic ring and the second anastomotic ring are in the anastomotic position, the vertical section is arranged on the outside of the second anastomotic ring or the first anastomotic ring, and the non-return surface of the non-return section is located on the outer bottom surface of the second anastomotic ring or the first anastomotic ring, thereby achieving the purpose of non-return.

5. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 4, characterized in that: A plurality of locking units are arranged around the first anastomotic ring or the second anastomotic ring, and the angle of the arc-shaped area of ​​each locking unit itself is greater than 10° and less than 30°.

6. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 5, characterized in that: 6-15 groups of locking units are evenly arranged, and the interval angle between every two locking units is the same as the arc angle of the locking units.

7. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 4, characterized in that: An inclined surface is arranged on the non-return segment, and an inclined guide surface for guiding the non-return segment to lock from one side to the other side is arranged on the anastomotic ring without anastomotic locking structure, and the inclined guide surface acts on the inclined surface.

8. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 1, characterized in that: The inner and outer diameters of the annular cavity are larger than those of the first guide short tube, so as to ensure that the anastomotic tissue entering the annular cavity along with the first guide short tube can be accommodated. The length of the first guide short tube is set at 3-8 mm, and the length of the annular cavity is adapted to the first guide short tube.

9. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 1, characterized in that: Only the areas corresponding to the two anastomotic rings are tightly fitted, allowing tissues to grow by adhesion, while the pressure in other anastomotic areas is controlled at a pressure state that does not cause adhesion growth; Alternatively, an anti-adhesion substance is provided for coating the anastomotic tissues in the anastomotic region where adhesion is unnecessary.

10. The gastrointestinal, intestinal or biliary intestinal anastomosis device according to claim 1, characterized in that: The anastomosis device is made of absorbable material as a whole, and the absorbable material is polyurethane elastomer, and the structural formula is as follows: Wherein, U is a diisocyanate residue; R 1 is a soft segment, CUR is a residue of curcumin or its derivatives; x is any integer from 10 to 100; The structural formula of CUR is as follows: R 2 =H, -CH3, -CH2-CH3, -CH2-CH2-CH3, -CH(CH3)-CH3, -CH2-CH2-CH2-CH3, -CH2-CH(CH3)-CH3, -C(CH3)2-CH3, etc., a straight-chain or branched alkyl group having no more than 4 carbon atoms; The soft segment is a diol prepolymer residue obtained by polymerization of ε-caprolactone monomer, and the average molecular weight of the soft segment is 1 to 10 kg / mol; The diisocyanate residue is formed by the reaction of diisocyanate and a prepolymer corresponding to the soft segment, and the diisocyanate is one or two or more of 4,4-dimethylmethane diisocyanate, 1,6-hexamethylene diisocyanate, L-lysine diisocyanate, and isophorone diisocyanate.

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