Anastomosis device with connecting rod

Abstract

The anastomosis device with the connecting rods comprises a main ring (1), an auxiliary ring (2) and a squeezing ring (3), and the squeezing ring (3) is located between the main ring (1) and the auxiliary ring (2); the connecting rods (102) are combined on the main ring (1); after the main ring (1) and the auxiliary ring (2) are clamped together, the squeezing ring (3) conducts anastomosis on tissue, and the connecting rod (102) can be disengaged from the main ring (1). According to the anastomosis device, the combination of the anastomosis rings and the connecting rod is realized, the involution problem of the anastomosis rings is solved, the safety, effectiveness and stability of anastomosis are improved, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to a surgical stapling device, and more particularly to a stapling device with a connecting rod. Background Art

[0002] At present, surgical anastomosis methods include manual suturing with needle and thread and mechanical anastomosis with titanium stapler. Titanium stapler has been used for more than half a century and has been used in about 40 types of surgeries, especially in tumor surgeries such as lung cancer, colorectal cancer, gastric cancer and liver cancer. The application scenarios have also evolved from the initial open surgery and manual operation to laparoscopic application scenarios and rely on electric drive, but it still cannot meet the clinical needs of rapidly developing surgical operations. Compared with traditional manual suturing, staplers have the following advantages: simple and convenient operation, saving operation time, disposable use, and avoiding cross infection. The use of titanium staples can achieve tight suturing with moderate tightness and reduce postoperative complications. The working principle of the titanium stapler is similar to that of a stapler. It fires and implants two or several rows of parallel and staggered staples into the tissue, so that the staples squeezed by the anvil can be in the shape of a B, and small blood vessels can pass through the gaps of the "B"-shaped staples, which can not only firmly bind the main blood vessels, but also ensure the blood supply and nutrition of the stapled tissue and the cutting edge.

[0003] However, titanium stapler is a penetrating anastomosis, and titanium staples remain around the anastomosis after surgery, which leads to the following consequences: bacteria grow along the titanium staples, causing infection risks; residual titanium staples remain in the human body for a long time, which is easy to cause local stress inflammatory response, leading to postoperative anastomotic stenosis, especially for hemorrhoid surgery or low colorectal surgery, some titanium staples remain in the body for more than 3 months before they can be gradually discharged, and some patients need surgery to remove them. Some patients experience complications such as severe pain, bleeding, and anastomotic stenosis after surgery, especially in special cases such as postoperative radiotherapy, chemotherapy, infection, etc., and the healing effect is poor; there are gaps between titanium staples, and titanium staples will form a large shear force on the edge of the tissue, which is easy to cause anastomotic tearing, anastomotic leakage or bleeding when there is tension or obvious edema at the anastomosis; titanium staples at the anastomosis generally need to be stapled 2-3 times, resulting in poor compliance of the anastomosis; titanium staples are small and numerous, and the yield rate is difficult to reach 100%, and nail removal will directly lead to bleeding or anastomotic leakage. The production process of titanium stapler is complex and the cost is high. This shows that titanium stapler is not the most ideal surgical anastomosis method.

[0004] Although there are a wide variety of surgical sutures and manual suturing techniques are constantly improving, due to the high requirements for suturing techniques, the long operation time, and the persistent foreign body reaction caused by sutures, especially in minimally invasive applications, the prognosis depends mainly on the experience of the surgeon, the learning curve is long, and the incidence of postoperative complications such as anastomotic fistula and stenosis is high. This shows that manual suture is not the most ideal surgical anastomosis method.

[0005] Compression anastomosis is a method of achieving tissue continuity reconstruction by pressing the tissues of the anastomotic ducts together through continuous and gradual mechanical compression force. As the mechanical force continues to act on the compressed tissues, the tissues sandwiched therein become ischemic and necrotic, while the tissues adjacent to the anastomosis gradually heal, ultimately achieving healing of the anastomosis. Several main methods of compression anastomosis include:

[0006] 1. Biodegradable anastomotic ring BAR (biofragmentable anastomotic ring):

[0007] The BAR degradable anastomotic ring first relies on purse-string suture to fix the intestinal ends, and then the paired anastomotic rings are aligned to achieve anastomosis. The spacing between the anastomotic rings is limited to 1.5-2.5mm to maintain a suitable squeezing force to prevent premature falling off due to excessive squeezing force. After 2-3 weeks, the anastomotic ring disintegrates into fragments and falls off, and is excreted with the stool. After a large number of clinical applications, it has been confirmed that the incidence of anastomotic leakage after BAR technology is about 4.5%, which is lower than that of titanium nails and sutures. However, the squeezing force of the BAR technology mainly relies on buckling and squeezing, and the gap is fixed. There are serious defects such as difficulty in intraoperative operation and difficulty in adapting to the individual differences in anastomotic diameter and intestinal wall thickness of patients.

[0008] 2.AKA-2 and CAR-27 (Compression Anastomosis Ring-27):

[0009] In 1984, Kanshin and other scholars successfully developed the needle-ring type AKA-2 stapler, which can be used for compression anastomosis. Patent application number 200610129165.4 discloses a stapler that uses a similar structure to the CAR-27 stapler. AKA-2 or the improved version of AKA-4 are both needle-ring structures; the difference is that the CAR-27 stapler uses nickel-titanium memory alloy elastic components to produce continuous and constant compression force, while the AKA series staplers rely only on the compression of the needle-ring, and the compression force decreases rapidly after tissue ischemia and necrosis. Patent application number 200610129165.4 uses memory alloy to directly produce progressive and uniform compression on the intestinal wall, thereby causing local necrosis of the intestinal wall, accompanied by the formation of intestinal wall healing, and finally forming a uniform anastomosis, and the anastomotic ring falls off from the anastomosis and is finally excreted from the body with feces. Compared with tubular staplers, the anastomotic stoma formed by the compression anastomotic ring has a lighter inflammatory reaction, less adhesion, no foreign matter such as titanium nails remains after healing, and the size of the anastomotic stoma is determined by its outer diameter, so it is not easy to have anastomotic stoma stenosis. In the patent 200610129165.4, the needle seat ring of the anastomotic ring has multiple needles (non-elastic), which penetrate into the tissue part and the anvil plate, so that the bottom ring and the anvil plate are mechanically connected, and the elastic force between the needle seat ring and the bottom ring, which is mainly composed of memory alloy, generates a downward force to pull the anvil plate to compress the tissue. This structure has a certain retraction and instability. In addition, the CAR-27 stapler has a complex structure and contains memory alloy components. It needs to be cooled with ice before anastomosis, which is cumbersome; when the local temperature of the anastomotic stoma is reduced, there is a risk of cracking.

[0010] 3. Magnetic compression technique (MCT):

[0011] By using the magnetic attraction between two or more magnets, the anastomotic stoma of organs can be reconnected, the tissue can be squeezed and closed, and the flow of the lumen contents can be limited through laparotomy (thoracic) surgery, laparoscopic surgery, endoscopic operation, interventional operation, etc., so as to achieve anastomosis and healing. The magnetic stapler has a simple structure, good squeezing and anastomosis effect, short operation time, and has advantages that cannot be matched by manual suturing. It has the advantages of continuous squeezing force that gradually increases with tissue necrosis, non-penetrating squeezing of tissues, and automatic suturing. Since magnetic anastomosis has the advantage of non-penetration, it is more conducive to the healing of anastomotic tissues and avoids the risk of local infection and tumor seeding at the needle eye or titanium nail puncture site. There is no foreign body residue in the reconstructed anastomosis. This is one of the most significant features of the magnetic squeezing stapler. Since the magnetic squeezing stapler is eventually excreted from the body with feces, it prevents sutures and titanium nails from inducing foreign body reactions in infected tissues, further aggravating the inflammatory reaction, protracted healing, and eventually forming anastomotic fistulas. Although magnetic anastomosis has many advantages, magnetic staplers are still in the exploratory stage and have not yet been widely used in clinical practice. Their actual effects still need to be verified.

[0012] The key technical difference between various compression staplers is that the basic principles of staplers are different due to different mechanical structures and mechanical principles. The most important defect of staplers BAR and AKA-2 is that they cannot balance the contradiction between the thickness of the intestinal wall and the spacing between the anastomotic rings, resulting in excessive or too small compression force. A fixed gap is used to generate pressure, and the thickness of the intestinal wall of each patient is different, so the compression force lacks stability. After tissue ischemia and necrosis, the thickness decreases rapidly and the compression force decreases rapidly. The CAR-27 stapler has defects such as dependence on temperature, instability of matching and fixation. For magnetic staplers, the problems that need to be overcome include: how to improve the convenience of stapler operation and optimize the method of fixing tissue stumps with staplers; how to use magnetism to generate moderate compression force on the anastomosed tissue; in addition, the risk of magnetic stapler expulsion and obstruction is still a problem that needs to be solved urgently. Summary of the invention

[0013] In response to the problems in the prior art, the present invention proposes an anastomosis device with a connecting rod, comprising: a main ring, a secondary ring and a pressing ring, wherein the pressing ring is located between the main ring and the secondary ring; a connecting rod, which is combined with the main ring; after the main ring and the secondary ring are engaged together, the pressing ring anastomoses the tissue, and the connecting rod can be detached from the main ring.

[0014] Preferably, the main ring further comprises a main ring connecting bridge having a through hole, and the connecting rod is coupled to the main ring connecting bridge.

[0015] Preferably, the main ring further comprises a guide reinforcement head or a metal disc located at the top end of the connecting bridge.

[0016] Preferably, the end of the connecting rod has a plurality of spring sheets and a fixing hole for inserting the auxiliary anastomosis device.

[0017] Preferably, the tail of the connecting rod has a pointed portion for connecting to an auxiliary anastomotic device.

[0018] Preferably, the secondary ring is provided with a buckle to clamp the main ring, and the buckle head of the buckle is pointed.

[0019] Preferably, the main ring has a guiding slope protruding toward the inner wall or the outer wall to guide the buckle to buckle with the main ring.

[0020] Preferably, the compression ring is a permanent magnet, located in pairs between the main ring and the secondary ring, and uses magnetic force to compress and anastomose the tissue; or, the compression ring is made of elastic material, located in pairs between the main ring and the secondary ring, and uses elastic force to compress and anastomose the tissue.

[0021] Preferably, an elastic component is located between the main ring and the auxiliary ring, and the elastic component generates elastic force on the pressing ring to compress and anastomose the tissue between the main ring and the pressing ring.

[0022] Preferably, the elastic component is made of an elastic material such as silica gel, wave spring or memory alloy, and the main ring or the auxiliary ring is made of plastic or metal, or made of an absorbable or disintegrable material.

[0023] Compared with the prior art, the anastomosis device provided by the present invention can improve the accuracy, safety and stability of anastomosis. Other technical effects of the present invention include:

[0024] In one aspect, compared to the anastomotic ring of the prior art, an elastic component is located inside the bottom ring, and the anastomotic device of the present invention comprises a main ring, a secondary ring and a pressing ring, wherein the pressing ring is located between the main ring and the secondary ring, and the main ring is axially provided with a connecting rod for connection, and also includes a connecting bridge to facilitate separation from the main ring body after anastomosis. The secondary ring is provided with a buckle on its circumference to clamp the main ring to prevent it from being disengaged.

[0025] In another aspect, the basic mechanical principle of the present invention is different from the prior art. The anastomotic device of the present invention comprises a main ring, a secondary ring and a pressing ring, wherein the pressing ring is located between the main ring and the secondary ring, and the main ring is provided with a connecting rod axially for connection, and also comprises a connecting bridge for facilitating separation from the main ring body after anastomosis. The secondary ring is provided with a buckle on the circumference to clamp the main ring to prevent it from being disengaged. Therefore, the stability, firmness and accuracy of the anastomotic ring are significantly improved.

[0026] In another aspect, the anastomotic device of the present invention can also have an attractive magnetic force or a repulsive magnetic force in addition to the elastic force, and has a simple and stable structure.

[0027] In another aspect, the anastomosis device of the present invention is different from the magnetic stapler of the prior art, and comprises: a main ring, a secondary ring and a compression ring, wherein the compression ring is located between the main ring and the secondary ring, and a buckle is provided on the circumference of the secondary ring to clamp the main ring and prevent it from detaching; the main ring is axially provided with a connecting rod, and the two are integrated for connecting an auxiliary anastomosis device; the main ring is radially provided with a connecting bridge to facilitate cutting and separation from the main ring body after anastomosis, and there are two or more connecting bridges; the compression ring can be made of elastic material and is located in pairs between the main ring and the secondary ring, and uses elastic force to compress and anastomose the tissue.

[0028] On the other hand, the anastomotic device of the present invention realizes the integration of the anastomotic ring and the connecting rod, solves the problem of anastomotic ring matching, improves the safety, effectiveness and stability of anastomosis, reduces the cost, realizes the minimized design of the compression stapler, and effectively solves these problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The basic structure of the first embodiment of the anastomotic device of the present invention;

[0030] Figure 2 The cross-sectional structure of the first embodiment of the anastomotic device of the present invention;

[0031] Figure 3 is an exploded view of the cross-sectional structure of the first embodiment of the anastomotic device of the present invention;

[0032] Figure 4 An exploded view of the basic structure of the first embodiment of the anastomotic device of the present invention;

[0033] Figure 5 The cross-sectional structure of the first embodiment of the anastomotic device of the present invention;

[0034] Figure 6 A top view of the main ring of the first embodiment of the anastomotic device of the present invention;

[0035] Figure 7 It is an oblique view of the main ring of the first embodiment of the anastomotic device of the present invention;

[0036] Figure 8 It is a cross-sectional oblique view of the main ring of the first embodiment of the anastomotic device of the present invention;

[0037] Fig. 9 The second embodiment of the main ring of the first embodiment of the anastomotic device of the present invention has a basic structure;

[0038] Fig.10 is an oblique view of a secondary ring of a first embodiment of the anastomotic device of the present invention;

[0039] Fig.11 It is a schematic diagram of the application process of the first embodiment of the anastomotic device of the present invention;

[0040] Fig.12 is a schematic diagram of the anastomotic device of the first embodiment of the present invention after application;

[0041] Fig.13 It is a structural schematic diagram of a second embodiment of the anastomotic device of the present invention;

[0042] Fig.14 A cross-sectional schematic diagram of a second embodiment of the anastomotic device of the present invention;

[0043] Fig.15 The basic structure of the elastic component squeezing ring of the second embodiment of the anastomotic device of the present invention;

[0044] Fig.16 This is a structural diagram of an elastic component of a second embodiment of an anastomotic device of the present invention;

[0045] Fig.17 This is a structural diagram of an elastic component of a second embodiment of an anastomotic device of the present invention;

[0046] Fig.18 This is a schematic diagram of the application process of the second embodiment of the anastomotic device of the present invention;

[0047] Fig.19 It is a schematic diagram of the combination of the first and second embodiments of the anastomotic device of the present invention and the auxiliary anastomotic device;

[0048] Fig. 20 It is a cross-sectional schematic diagram of the first and second embodiments of the anastomotic device of the present invention combined with an auxiliary anastomotic device;

[0049] Fig.21 Schematic diagram of the anastomosis device according to the first and second embodiments of the present invention;

[0050] Reference numerals

[0051] 1 main ring, 101 main ring connecting bridge, 102 connecting rod, 1021 connecting rod body, 1022 round hole, 1023 main ring connecting rod tip, 1024 spring piece, 1025 fixing hole, 1026 gap, 103 guide reinforcement head, 104 buckle head protection groove, 105 squeezing ring groove, 106 guide inclined surface, 107 through hole, 108 metal disc, 109 fastening screw; 2 secondary ring, 201 buckle, 202 buckle head, 203 squeezing ring groove; 3 squeezing ring, 31 first squeezing ring, 32 second squeezing ring; 4 annular cutting knife; 5 elastic component; 6 anastomosis gun body; 7 anastomosis gun handle; 8 anastomosis gun firing safety bolt; 9 anastomosis gun matching button; 10 annular cutting knife pushing component; 11 intestinal anastomosis; 12 anus; DETAILED DESCRIPTION

[0052] The present invention is described below with reference to the accompanying drawings, wherein like components are designated by like reference numerals.

[0053] First embodiment

[0054] Figure 1-Figure 5 The structure of the first embodiment of the anastomotic device of the present invention is shown. The anastomotic ring anastomotic device includes a main ring 1, a secondary ring 2 and a pressing ring 3. The main ring 1 is axially provided with a connecting rod 102, and the main ring 1 and the connecting rod 102 can be integrally formed. The connecting rod 102 passes through the secondary ring 2, and a buckle 201 is provided on the inner circumference of the secondary ring 2 to clamp the main ring 1 to prevent the main ring 1 and the secondary ring 2 from being disengaged. The pressing ring 3 is located between the main ring 1 and the secondary ring 2. Preferably, the pressing ring 3 is made of a permanent magnet or an elastic material. The pressing rings 3 are distributed in pairs, one is located in the main ring 1, and the other is located in the secondary ring 2. The connecting rod 102 is used to connect the auxiliary anastomotic device. After the main ring 1 and the secondary ring 2 are combined to form the anastomotic ring, the connecting rod 102 is cut off by the auxiliary anastomotic device, leaving only the anastomotic ring.

[0055] Preferably, a main ring connecting bridge 101 is provided on the inner radial side of the main ring 1, and the main ring 1 is connected to the connecting rod 102 through the connecting bridge 101. After the main ring 1 and the secondary ring 2 are anastomosed, the main ring connecting bridge 101 is cut by the annular cutting knife 4, so that the connecting rod 102 is cut and separated from the main body of the main ring 1. There are two or more main ring connecting bridges 101. The main ring connecting bridge 101 makes it easier for the connecting rod 102 to detach from the anastomotic ring.

[0056] Preferably, the main ring 1 further has a guide reinforcement head 103, which is located at the top of the connecting bridge 101. The function of the guide reinforcement head 103 is to facilitate the annular cutting knife 4 to smoothly cut the connecting bridge 101 to achieve separation, and to prevent the main ring 1 from deforming, resulting in the buckle 201 being unable to buckle or incompletely buckled.

[0057] Preferably, the squeezing ring 3 includes a first squeezing ring 31 and a second squeezing ring 32, and the main ring 1 is provided with a squeezing ring groove 105 for accommodating the first squeezing ring 31. The secondary ring 2 is provided with a squeezing ring groove 203 for accommodating the second squeezing ring 32. A plurality of buckles 201 are provided on the inner circumference of the secondary ring 2, and the buckle heads 202 of the buckles 201 are pointed to smoothly penetrate the tissue.

[0058] Preferably, a guiding bevel 106 is provided on the inner circumference of the main ring 1 (or on the outer circumference, which can be changed according to the combination mode of the main ring 1 and the secondary ring 2). The guiding bevel 106 extends from the side of the main ring 1 close to the secondary ring 2 and gradually tilts toward the connecting rod 102. The function of the guiding bevel 106 is to guide the buckle head 202 of the buckle 201 of the secondary ring 2 to smoothly buckle and clamp the main ring 1 when the main ring 1 and the secondary ring 2 are combined. More specifically, a buckle head protection groove 104 is provided on the inner wall of the main ring 1, and the buckle head 202 can enter the buckle head protection groove 104 of the main ring 1 to prevent damage to the tissue around the anastomosis.

[0059] Preferably, the tail of the connecting rod 102 is pointed and is used for connecting an auxiliary anastomosis device.

[0060] Figure 6 The top view of the main ring 1 of the anastomotic device is shown. Figure 7 The oblique view structure of the main ring 1 of the anastomosis device is shown. The main ring 1 is provided with a connecting bridge 101 in the radial direction, which is convenient for cutting and separating from the main ring 1 body after anastomosis. There are two or more connecting bridges 101. Through holes 107 are formed on both sides of the connecting bridge 101, which is more convenient for cutting and separation. A pressing ring groove 105 is provided on the main ring 1 to accommodate the first pressing ring 31.

[0061] Figure 8 The oblique cross-sectional structure of the main ring 1 of the anastomotic device is shown. The connecting rod 102 is combined with the center of the connecting bridge 101, and a guiding reinforcement head is provided at the top of the connecting rod 102. Preferably, the connecting rod 102 includes a connecting rod body 1021, a circular hole 1022 and a main ring connecting rod tip 1023.

[0062] Fig. 9 The oblique view structure of the second embodiment of the main ring 1 of the anastomosis device is shown. Different from the first embodiment, in this embodiment, the tail of the connecting rod 102 is an open hole structure. The connecting rod 102 includes a connecting rod body 1021, a spring piece 1024, a fixing hole 1025, and a gap 1026. The lower part of the connecting rod body 1021 is a hollow structure, and the bottom end is a fixing hole 1025. The lower part of the connecting rod body 1021 has a plurality of axial gaps 1026. The plurality of gaps 1026 form a plurality of spring pieces 1024 at the tail of the connecting rod 102. When the tip of the external auxiliary anastomosis device is inserted into the fixing hole 1025, the spring piece 1024 opens along the gap 1026, wraps around and fixes the tip of the external auxiliary anastomosis device, and then returns to its original shape.

[0063] Fig.10 The structure of the auxiliary ring 2 of the anastomosis device is shown. A plurality of buckles 201 are arranged on the circumference of the auxiliary ring 2. The buckle heads 202 are pointed and can penetrate the tissue smoothly. A pressing ring groove 203 is arranged on the auxiliary ring 2 to accommodate the second pressing ring 32.

[0064] Fig.11 and Fig.12 It is a schematic diagram of the application process of the anastomotic device of the present invention. Fig.11 During the cutting process, Fig.12 After cutting and separation. Fig.11 As shown, a plurality of buckles 201 are arranged on the inner circumference of the secondary ring 2 of the anastomosis device. The buckle heads 202 of the buckles 201 are pointed and can smoothly penetrate tissues. Under the guidance of the guide slope 106 of the main ring 1, they can smoothly buckle and clamp the main ring 1. The buckle heads 202 enter the buckle head protection groove 104 of the main ring 1 to prevent the buckle heads 202 from damaging human tissues. After the buckles 201 are successfully buckled, the annular cutting knife 4 is gradually inserted into the connecting rod 102, gradually approaching the head of the main ring 1, and cutting and separating. Fig.12 As shown, the annular cutting knife 4 smoothly cuts the connecting bridge 101, so that the connecting rod 102 is separated, leaving the anastomotic ring after being fastened and cut.

[0065] Fig.13 The oblique view structure of the third embodiment of the main ring 1 of the anastomotic device is shown. Fig.14 It is a cross-sectional view. The anastomosis device includes a main ring 1, a secondary ring 2 and a pressing ring 3, wherein the pressing ring 3 is located between the main ring 1 and the secondary ring 2. Preferably, the pressing ring 3 is made of a permanent magnet or an elastic material, and is distributed in pairs between the main ring 1 and the secondary ring 2. The main ring 1 is axially provided with a connecting rod 102, and the two are integrated for connecting the auxiliary anastomosis device. The main ring 1 is provided with a main ring connecting bridge 101, which is convenient for cutting and separating from the main body of the main ring 1 after anastomosis. There are two or more main ring connecting bridges 101, and through holes 107 are formed on both sides of the connecting bridge 101 for easy cutting and separation. A metal disc 108 and its fastening screws 109 are also provided on the outside of the main ring 1, which is convenient for smoothly cutting the connecting bridge 101 to achieve separation after anastomosis, and preventing the main ring 1 from deforming and causing the several buckles 201 provided on the circumference of the secondary ring 2 to fail to buckle onto the main ring 1 or to be incompletely buckled.

[0066] Second embodiment

[0067] Figure 15-16 The structure of the second embodiment of the anastomotic device of the present invention is shown. Figure 1-Figure 14 The difference between the embodiment shown is that, in this embodiment, the main difference is that an elastic component 5 is added, and the source of the pressing force changes. Preferably, the elastic component 5 is made of a wave spring or other elastic materials.

[0068] Fig.15This is the basic structure of the second embodiment of the anastomosis device of the present invention. The anastomosis device is composed of a main ring 1, a secondary ring 2 and a pressing ring 3. The pressing ring 3 is located between the main ring 1 and the secondary ring 2. Preferably, the pressing ring 3 is made of metal or plastic material and is distributed in pairs between the main ring 1 and the secondary ring 2. The elastic component 5 is located between the secondary ring 2 and the pressing ring 3. The secondary ring 2 is provided with a pressing ring groove 203 for accommodating the elastic component 5. Preferably, the elastic component 5 is made of a wave spring or other elastic material, which generates elastic force after being compressed, and generates a continuous and progressive pressing force between the paired pressing rings 3 to anastomose the tissues between the paired pressing rings 3. The main ring 1 is axially provided with a connecting rod 102, and the two are integrated. The connecting rod 102 is used to connect the auxiliary anastomosis device. The top of the main ring 1 is also provided with a guide reinforcement head 103.

[0069] Fig.16 and Fig.17 This is the preferred structure of the elastic component 5 in the second embodiment of the anastomotic device of the present invention. The elastic component 5 is made of a wave spring or other elastic materials. Fig.16 The elastic component 5 is shown to be a multi-layer wave spring structure. Fig.17 The elastic component 5 is shown to be a single-layer wave spring structure.

[0070] Fig.18 This is the cross-sectional structure of the second embodiment of the anastomosis device of the present invention. The anastomosis device is composed of a main ring 1, a secondary ring 2 and a squeezing ring 3. The squeezing ring 3 is located between the main ring 1 and the secondary ring 2. Preferably, the squeezing ring 3 is made of metal or plastic material and is distributed in pairs between the main ring 1 and the secondary ring 2. The elastic component 5 is located between the secondary ring 2 and the squeezing ring 3. The secondary ring 2 is provided with a squeezing ring groove 203 for accommodating the elastic component 5. Preferably, the elastic component 5 is made of a wave spring or other elastic material, which generates elastic force after compression, generates a continuous progressive squeezing force between the paired squeezing rings 3, and anastomoses the tissues between the paired squeezing rings 3. The main ring 1 is provided with a connecting rod 102 in the axial direction, and the two are integrated for connecting the auxiliary anastomosis device. The main ring 1 is also provided with a guiding reinforcing head 103; a plurality of buckles 201 are provided on the circumference of the secondary ring 2, and the buckle heads 202 are pointed, which can smoothly penetrate the tissue, and can be smoothly buckled and clamped to the main ring 1 under the guidance of the guiding inclined surface 106 of the main ring 1, and the buckle heads 202 enter the buckle head protection groove 104 of the main ring 1 to prevent damage to human tissue.

[0071] The above are two embodiments of the anastomotic device. Fig.19 and Fig. 20It is a schematic diagram of the connection between the anastomosis device of the present invention and the external auxiliary anastomosis device, wherein the external auxiliary anastomosis device includes: anastomosis gun body 6, anastomosis gun handle 7, anastomosis gun firing safety bolt 8 and anastomosis gun matching button 9. A connecting rod 102 is axially provided on the main ring 1, and the two are integrally formed. The connecting rod 102 is used to connect the auxiliary anastomosis device. A main ring connecting bridge 101 is provided at the top of the main ring 1 to facilitate the cutting and separation of the connecting rod 102 from the main body of the main ring 1 after anastomosis. There are two or more main ring connecting bridges 101. A plurality of buckles 201 are provided on the circumference of the secondary ring 2. The main ring 1 of the anastomosis device is radially provided with a main ring connecting bridge 101 and a guiding reinforcement head 103, so that the annular cutting knife 4 can smoothly cut the connecting bridge 101 to achieve separation after anastomosis, and prevent the connecting bridge 101 from deforming and causing the buckle 201 to fail to buckle or incompletely buckle; when the connecting rod 102 is inserted into the auxiliary anastomosis device, the anastomosis gun engagement button 9 is rotated to gradually bring the main ring 1 and the secondary ring 2 closer together, and a plurality of buckles 201 are arranged on the circumference of the secondary ring 2 to buckle with the main ring 1, and the paired squeezing rings 3 between the two rely on magnetic force or elastic force to squeeze the tissue to achieve anastomosis, and then the anastomosis gun firing safety bolt 8 can be released, and the anastomosis gun handle 7 is used to drive the annular cutting knife pushing assembly 10, and then drive the annular cutting knife 4 to cut off excess tissue and the connecting bridge 101 in turn, thereby realizing the cutting and separation of the anastomosis device and the auxiliary anastomosis device.

[0072] Fig.21 The schematic diagram of the operation of the first and second embodiments of the anastomosis device of the present invention is shown in FIG. The main ring 1 and the secondary ring 2 are buckled together by the buckle 201 on the secondary ring 2, and the paired squeezing rings 3 between the main ring 1 and the secondary ring 2 are limited to prevent the paired squeezing rings 3 from being disengaged. The paired squeezing rings 3 rely on their own magnetic force or elastic force to squeeze and anastomose the intestinal anastomosis 11 on the anus 12.

[0073] The above schematically describes the present invention and its embodiments, which are not restrictive. The drawings show only several embodiments of the present invention, and the actual structure is not limited thereto. If a person skilled in the art is inspired by this, without departing from the purpose of the invention, other forms of structure, transmission, installation and connection methods are adopted without creative design. Structural methods and embodiments similar to the technical solution should all fall within the scope of protection of the present invention.

Claims

1. An anastomotic device with a connecting rod, characterized in that: include: A main ring (1), a secondary ring (2) and a pressing ring (3), wherein the pressing ring (3) is located between the main ring (1) and the secondary ring (2); A connecting rod (102) connected to the main ring (1); After the main ring (1) and the secondary ring (2) are engaged together, the pressing ring (3) anastomoses the tissue, and the connecting rod (102) can be separated from the main ring (1).

2. The anastomotic device with a connecting rod according to claim 1, characterized in that: The main ring (1) also includes a main ring connecting bridge (101) having a through hole (107), and the connecting rod (102) is connected to the main ring connecting bridge (101).

3. The anastomotic device with a connecting rod according to claim 2, characterized in that: The main ring (1) also includes a guide reinforcement head (103) or a metal disc (108) located at the top end of the connecting bridge (101).

4. The anastomotic device with a connecting rod according to claim 1, characterized in that: The end of the connecting rod (102) has a plurality of spring sheets (1024) and a fixing hole (1025) for inserting an auxiliary anastomosis device.

5. The anastomotic device with a connecting rod according to claim 1, characterized in that: The tail of the connecting rod (102) has a pointed portion for connecting to an auxiliary anastomotic device.

6. The anastomotic device with a connecting rod according to claim 1, characterized in that: The secondary ring (2) is provided with a buckle (201) for clamping the main ring (1), and the buckle head (202) of the buckle (201) is pointed.

7. The anastomotic device with a connecting rod according to claim 6, characterized in that: The main ring (1) has a guiding inclined surface (106) protruding toward the inner wall or the outer wall to guide the buckle (201) to buckle the main ring (1).

8. The anastomotic device with a connecting rod according to claim 1, characterized in that: The squeezing ring (3) is a permanent magnet, located in pairs between the main ring (1) and the auxiliary ring (2), and uses magnetic force to squeeze and anastomose the tissue; or, the squeezing ring (3) is made of elastic material, located in pairs between the main ring (1) and the auxiliary ring (2), and uses elastic force to squeeze and anastomose the tissue.

9. The anastomotic device with a connecting rod according to claim 1, characterized in that: Also includes: An elastic component (5) is located between the main ring (1) and the secondary ring (2), and the elastic component (5) generates elastic force on the pressing ring (3) to compress and anastomose the tissue between the main ring (1) and the pressing ring (3).

10. The anastomotic device with a connecting rod according to claim 9, characterized in that: The elastic component (5) is made of an elastic material such as silica gel, wave spring or memory alloy, and the main ring (1) or the auxiliary ring (2) is made of plastic or metal, or made of an absorbable or disintegrable material.

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