Anastomosis instrument

Abstract

The anastomosis instrument comprises a blood vessel connecting piece, a lymphatic connecting tube and a soft protection piece, and at least one of the first end of the blood vessel connecting piece, the second end of the blood vessel connecting piece and the other end of the lymphatic connecting tube is connected with the soft protection piece. According to the arrangement, by additionally arranging the soft protection piece, the flexibility and elasticity of the soft protection piece can be utilized to reduce traction and compression on the lymphatic vessel wall and the blood vessel wall, and the tension of an anastomotic stoma is reduced, so that the instrument has good flexibility and compliance at the lymphatic connecting end and the blood vessel connecting end, and the mechanical damage to the lymphatic vessel and the blood vessel in an operation is reduced; the surgical risk is reduced, rapid endothelialization and healing of the anastomotic stoma are facilitated, the surgical safety and success rate are improved, and the problem that a traditional metal connecting instrument is too large in rigidity is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an anastomosis device for connecting lymphatic vessels and blood vessels. BACKGROUND

[0002] Lymphatic-vessel anastomosis is an important surgical method for treating lymphatic reflux disorders and related diseases. By anastomosing a lymphatic vessel with a nearby blood vessel (usually a venous blood vessel), a drainage channel for lymphatic fluid to the system is established, thereby relieving tissue edema and promoting the discharge of metabolic waste.

[0003] Currently, the anastomosis devices commonly used in clinical practice are mostly made of metal materials, such as stainless steel or titanium alloy, which have the characteristics of high strength and good shape stability. However, the metal material has relatively large rigidity, which can easily cause damage to the lymphatic vessels and blood vessels during the anastomosis process. In addition, the device position needs to be adjusted multiple times and sutured during the operation. The repeated operation of the rigid device can further increase the mechanical trauma to the lymphatic vessels and blood vessels, affecting the healing of the anastomotic stoma, and even leading to anastomosis failure. Therefore, improvement is urgently needed. SUMMARY

[0004] The main purpose of the present application is to provide an anastomosis device for connecting lymphatic vessels and blood vessels, which can reduce the damage to the lymphatic vessels and blood vessels during the operation.

[0005] To achieve the above-mentioned purpose, the present application provides an anastomosis device for connecting lymphatic vessels and blood vessels, comprising: a blood vessel connecting member for connecting with a blood vessel of a human body, a through hole is provided in the side wall of the blood vessel connecting member, and the blood vessel connecting member has two ends, i.e., a first end and a second end; a lymphatic connecting tube, one end of the lymphatic connecting tube is in communication with the through hole, and the other end of the lymphatic connecting tube is used for communicating with a lymphatic vessel; at least one soft protective member; The soft protective member is connected to at least one of the first end of the blood vessel connecting member, the second end of the blood vessel connecting member, and the other end of the lymphatic connecting tube.

[0006] In some embodiments, the lymphatic connecting tube is a plurality of tubes, and the soft protective member is provided in a plurality of tubes. One end of each of the lymphatic connecting tubes is in communication with the blood vessel connecting member, and the other end of each of the lymphatic connecting tubes is provided with the soft protective member.

[0007] In some embodiments, a lymphatic lumbar canal is further included, one end of the lymphatic lumbar canal is connected with the blood vessel connecting member and is arranged in communication with the through hole, and the end face of the other end of the lymphatic lumbar canal is provided with a drainage hole, which is in communication with the lymphatic connecting tube.

[0008] In some embodiments, a connecting structure is further included, the connecting structure being disposed between the flexible protective member and the lymphatic connecting tube and / or the vascular connecting member, the connecting structure being used to fix the flexible protective member relative to the lymphatic connecting tube and / or the vascular connecting member.

[0009] In some embodiments, the connection structure includes barbs that can penetrate the inner wall of the flexible protective member for connection.

[0010] In some embodiments, the connection structure includes a heat shrink collar, which is fitted onto the outside of the flexible protective member.

[0011] In some embodiments, the outer peripheral wall of the lymphatic lumbar tube is provided with at least one fastener.

[0012] In some embodiments, one end of the lymphatic connection tube extends from the through-hole into the interior of the vascular connector, and the anastomosis device further includes a sleeve that is fitted over the outside of the lymphatic connection tube and the vascular connector.

[0013] In some embodiments, the anastomosis device is provided with at least one imaging element.

[0014] In some embodiments, the vascular connector is a hollow tube, and the flexible protective component is a flexible hose.

[0015] The beneficial effects of the technical solution of this invention are as follows: The anastomosis device of the present invention effectively alleviates the problem of excessive rigidity of traditional metal connecting devices by introducing soft protective components as port protection structures for lymphatic connection tubes and / or vascular connection tubes. By setting soft protective components at the lymphatic connection ends of the lymphatic connection tubes or at both ends of the vascular connection tubes, the flexibility and elasticity of the components can reduce the traction and compression on the lymphatic and vascular walls, and reduce anastomotic tension. This allows the device to have good flexibility and compliance at the lymphatic and vascular connection ends, reducing mechanical damage to lymphatic vessels and blood vessels during surgery, reducing surgical risks, and also promoting rapid endothelialization and healing of the anastomosis, thereby improving surgical safety and success rate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure and installation of the anastomosis device for connecting lymphatic vessels and blood vessels according to an embodiment of the present invention; Figure 2 for Figure 1 A sectional view; Figure 3 This is a schematic diagram of another embodiment of the anastomosis device for connecting lymphatic vessels and blood vessels according to an embodiment of the present invention; Figure 4 for Figure 3 A sectional view; Figure 5 Fig. 1 is a structural schematic diagram of a lymphatic connecting tube connected with a soft protective member according to an embodiment of the present application; Figure 6 Fig. 2 is a structural schematic diagram of another embodiment of a lymphatic connecting tube connected with a soft protective member according to the present application; Figure 7 Fig. 3 is a structural schematic diagram of a lymphatic connecting tube connected with a blood vessel connecting member according to an embodiment of the present application; Figure 8 Fig. 4 is a structural schematic diagram of a lymphatic connecting tube connected with a blood vessel connecting member by a sleeve according to an embodiment of the present application.

[0017] Explanation of reference numerals: 100, blood vessel connecting member; 110, bevel; 120, through hole; 200, lymphatic channel; 210, drainage hole; 220, fixing member; 221, through hole; 300, lymphatic connecting tube; 400, soft protective member; 500, connecting structure; 510, barb; 520, heat shrinkable hoop; 600, sleeve. DETAILED DESCRIPTION

[0018] The scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In addition, the description of “first”, “second” and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.

[0019] In view of the technical defects in the related art, the present application provides an anastomosis instrument for connecting lymphatic vessels and blood vessels, please refer to Figures 1 to 6 The anastomosis instrument comprises a blood vessel connecting member 100, a lymphatic connecting tube 300 and at least one soft protective member 400. The blood vessel connecting member 100 is used to be anastomosed and connected with a human body blood vessel (usually a vein blood vessel), and a through hole 120 is formed in the side wall thereof, which is used to establish a channel for lymphatic fluid flowing into the blood vessel. Specifically, the blood vessel connecting member 100 has two ends, which are a first end and a second end. The through hole 120 is arranged at the middle part of the blood vessel connecting member 100, and a certain size is reserved on both sides of the through hole 120, so as to facilitate the lap joint and anastomosis of the two ends of the blood vessel connecting member 100 with the human body blood vessel, and the anastomosis is more stable.

[0020] Preferably, the blood vessel connecting piece 100 is a hollow tube which can be placed in the blood vessel and has at least one through hole 120 in the side wall, i.e. the blood vessel connecting piece 100 is a blood vessel connecting tube. The blood vessel connecting piece 100 is a hollow tube which conforms to the structure of the blood vessel lumen, can provide a channel for blood circulation and does not affect the blood circulation, and can be well supported and connected with the blood vessel. In other ways, the blood vessel connecting piece 100 can also be a half tube, a strip, a bowl, etc., as long as it can be placed in the blood vessel and does not affect the blood circulation and does not block the blood vessel. That is, the blood vessel connecting piece 100 is any shape which can be placed in the blood vessel and does not affect the blood circulation. In order to be easily placed in the blood vessel, the two ends of the blood vessel connecting piece 100 are provided with bevels. The connection mode of the blood vessel connecting piece 100 with the blood vessel after being placed in the blood vessel can be lap joint, support connection, etc.

[0021] The lymphatic connecting tube 300 is provided in communication with the through hole 120 at one end and is used to communicate with the lymphatic vessel. The blood vessel connecting piece 100 and the lymphatic connecting tube 300 can be integrally formed, or can be connected by connection means such as welding, bonding, etc. to form a whole, which is not specifically limited here.

[0022] The first end of the blood vessel connecting piece 100, the second end of the blood vessel connecting piece 100 and the other end of the lymphatic connecting tube 300 are connected with a soft protective piece 400. The soft protective piece 400 can be a hose, a soft ring, a soft sheet, etc.

[0023] Preferably, the first end of the blood vessel connecting piece 100, the second end of the blood vessel connecting piece 100 and the other end of the lymphatic connecting tube 300 are all connected with the soft protective piece 400. The soft protective piece 400 is made of a polymer material (such as medical silicone, polyurethane, degradable high molecular material, etc.) which has certain elasticity, flexibility and good biocompatibility. Due to the elasticity and flexibility of the soft protective piece 400, it can adapt to the natural bending and pulsation of the lymphatic vessel and the blood vessel, and can reduce the local stress concentration and tissue damage caused by the metal rigidity of the anastomosis instrument.

[0024] Through the above technical scheme, the anastomosis instrument for connecting the lymphatic vessel and the blood vessel of the present application effectively alleviates the problem that the rigidity of the traditional metal anastomosis anastomosis instrument is too large and causes damage to the lymphatic vessel and the blood vessel by introducing the soft protective piece 400 as the port protection structure of the lymphatic connecting tube 300 or / and the blood vessel connecting piece 100.

[0025] In some embodiments, a plurality of lymphatic connecting tubes 300 are provided, one end of each lymphatic connecting tube 300 is connected to the blood vessel connecting piece 100, and the other end of each lymphatic connecting tube 300 is provided with a soft protective piece 400. The plurality of lymphatic connecting tubes 300 are arranged around the side wall of the blood vessel connecting piece 100 and are respectively connected to the corresponding soft protective pieces 400. This structure is suitable for connecting multiple lymphatic vessels at the same time, can establish multiple drainage channels, and improve the efficiency of lymphatic drainage, and is especially suitable for surgical areas with rich lymphatic vessels or large lymphatic load.

[0026] In some embodiments, the anastomosis instrument further comprises a lymphatic lumbar duct 200, one end of the lymphatic lumbar duct 200 is connected to the blood vessel connecting piece 100 and is in communication with the through hole 120, and the end face of the other end of the lymphatic lumbar duct 200 is provided with a drainage hole 210, and the lymphatic connecting tube 300 is in communication with the drainage hole 210. In this way, the internal cavity of the lymphatic lumbar duct 200 is in communication with the inner cavity of the blood vessel connecting piece 100. Further, the lymphatic connecting tube 300 is a plurality of, the drainage hole 210 is provided with a plurality of, each drainage hole 210 corresponds to each lymphatic connecting tube 300 one by one, and each drainage hole 210 is in communication with the corresponding lymphatic connecting tube 300. Each drainage hole 210 independently corresponds to a branch of the lymphatic connecting tube 300, ensures that each drainage channel is independent of each other, avoids mixing or interference of lymphatic fluid in the anastomosis instrument, and is also beneficial to observing the patency of each drainage channel after surgery.

[0027] In order to realize the reliable fixation of the soft protective piece 400 and avoid the soft protective piece 400 from falling off, in some embodiments, the anastomosis instrument further comprises a connecting structure 500, which is arranged between the soft protective piece 400 and the lymphatic connecting tube 300, and is used for stably fixing the soft protective piece 400 and the lymphatic connecting tube 300. The connecting structure 500 can prevent the soft protective piece 400 and the lymphatic connecting tube 300 from being separated or displaced during or after surgery, and ensure the integrity and stability of the drainage channel.

[0028] Further, please refer to Figure 5 In an embodiment, the connecting structure 500 comprises barbs 510, each barb 510 is arranged at intervals along the circumference of the lymphatic connecting tube 300, and each barb 510 penetrates into the inner wall of the soft protective piece 400 when the soft protective piece 400 is sleeved outside the lymphatic connecting tube 300. When the soft protective piece 400 is sleeved outside the lymphatic connecting tube 300, the barb 510 can penetrate into the inner wall of the soft protective piece 400 to form a mechanical interlock. This connection method is simple to operate, firm in fixation, and does not require additional adhesives or fasteners, reducing the introduction of foreign matter.

[0029] In another embodiment, please refer to Figure 6The connecting structure 500 includes a heat-shrinkable hoop 520, which is sleeved outside the soft protective member 400 and can be tightened and fixed after heat shrinking. The soft protective member 400 is sleeved outside the lymphatic connecting tube 300, and the heat-shrinkable hoop 520 is sleeved at the overlapping position of the soft protective member 400 and the lymphatic connecting tube 300. The heat-shrinkable hoop 520 can be elastic, and after the soft protective member 400 is sleeved outside the lymphatic connecting tube 300, the heat-shrinkable hoop 520 is sleeved on the outer periphery of the overlapping part, and the heat-shrinkable hoop 520 tightly holds the soft protective member 400 outside the lymphatic connecting tube 300 through elasticity; the heat-shrinkable hoop 520 can also be shrunk through heating, so that the heat-shrinkable hoop 520 is shrunk after heating, tightly holds the soft protective member 400 outside the lymphatic connecting tube 300, and forms uniform circumferential compression force. The heat-shrinkable hoop 520 has simple structure, reliable connection, small damage to materials, and smooth surface, and is not easy to adhere to surrounding tissues.

[0030] Similarly, the connecting mode of the soft protective member 400 and the blood vessel connecting member 100 can also adopt the connecting structure 500 for relative fixation. The connecting structure 500 includes barbs 510. The barbs 510 are multiple and are arranged on the peripheral wall at both ends of the blood vessel connecting member 100. The barbs 510 are arranged at intervals along the circumference of the blood vessel connecting member 100, and the barbs 510 are inserted into the inner wall of the soft protective member 400 when the soft protective member 400 is sleeved outside the blood vessel connecting member 100. When the soft protective member 400 is connected to the end of the blood vessel connecting member 100, the barbs 510 can be inserted into the inner wall of the soft protective member 400 to form mechanical interlocking. This connecting mode is simple to operate, firmly fixed, and does not require additional adhesives or fasteners, reducing the introduction of foreign matter.

[0031] The connecting structure 500 includes a heat-shrinkable hoop 520. The soft protective member 400 is sleeved outside the blood vessel connecting member 100, and the heat-shrinkable hoop 520 is sleeved at the overlapping position of the soft protective member 400 and the blood vessel connecting member 100. The heat-shrinkable hoop 520 can be elastic, and after the soft protective member 400 is sleeved outside the blood vessel connecting member 100, the heat-shrinkable hoop 520 is sleeved on the outer periphery of the overlapping part, and the heat-shrinkable hoop 520 tightly holds the soft protective member 400 outside the blood vessel connecting member 100 through elasticity; the heat-shrinkable hoop 520 can also be shrunk through heating, so that the heat-shrinkable hoop 520 is shrunk after heating, tightly holds the soft protective member 400 outside the blood vessel connecting member 100, and forms uniform circumferential compression force. The heat-shrinkable hoop 520 has simple structure, reliable connection, small damage to materials, and smooth surface, and is not easy to adhere to surrounding tissues.

[0032] In some embodiments, the outer peripheral wall of the lumbar lymphatic duct 200 is provided with a plurality of fixing members 220, each of which is arranged at intervals along the peripheral side of the lumbar lymphatic duct 200. The fixing members 220 are used to provide additional anchor points during the operation. The surgeon can wrap the suture around the lymphatic duct and anchor it to the fixing member 220, thereby stably sleeving the lymphatic duct to the lymphatic connecting tube 300, preventing the anastomosis device from shifting, twisting or falling off due to body position changes or tissue activity, and greatly improving the long-term stability after implantation. Further, the number of fixing members 220 can be consistent with the lymphatic connecting tube 300. The fixing member 220 can be ring-shaped and provided with a through hole 221, which can be used to pass through the suture. In other ways, the fixing member 230 can also be hook-shaped or have a protruding edge around the outer periphery of the lumbar lymphatic duct 200.

[0033] To prevent blood backflow, further, a backflow prevention member is arranged in the inner cavity of the lumbar lymphatic duct 200, which is used to limit the flow direction of the liquid in the lumbar lymphatic duct 200, and only allows the liquid to flow in one direction from the lumbar lymphatic duct 200 to the vascular connecting member 100, that is, only allows the lymphatic fluid to flow in one direction to the blood vessel, and does not allow the blood to flow to the lymphatic duct. Specifically, the backflow prevention member is a one-way valve arranged in the inner cavity of the lumbar lymphatic duct 200. Under normal circumstances, the one-way valve is in a closed state, and when subjected to the pressure of the lymphatic fluid above, it opens to allow the lymphatic fluid to flow through, and when the pressure of the lymphatic fluid is insufficient, the valve closes to prevent blood backflow. Of course, the backflow prevention member can also be a one-way valve, etc.

[0034] Please refer to Figures 7 to 8 In some embodiments, one end of the lymphatic connecting tube 300 extends into the inside of the vascular connecting member 100 from the through hole 120, and the anastomosis device for connecting the lymphatic duct and the blood vessel further includes a tube sleeve 600 sleeved on the outside of the lymphatic connecting tube 300 and the vascular connecting member 100. The soft protective member 400 is sleeved on the other end of the lymphatic connecting tube 300 away from the vascular connecting member 100 and is fixed with the tube sleeve 600 by heat shrinking. By using the tube sleeve 600 to relatively fix the lymphatic connecting tube 300 located outside the vascular connecting member 100, the connection between the lymphatic connecting tube 300 and the vascular connecting member 100 can have a certain flexible deformation ability, avoiding the connection between the lymphatic connecting tube 300 and the vascular connecting member 100 being too rigid during the operation process, causing the lymphatic connecting tube 300 to be pulled, bent, twisted or fallen off. During the drainage process, the connection has flexibility, which can adapt to the flow of fluid, so that the lymphatic fluid flows more smoothly. It should be noted that the way in which the tube sleeve 600 is sleeved on the outside of the lymphatic connecting tube 300 and connected with the vascular connecting member 100 can be to relatively fix the lymphatic connecting tube 300 and the vascular connecting member 100 by heat shrinking the tube sleeve 600, or to relatively fix the lymphatic connecting tube 300 and the vascular connecting member 100 by using an adhesive, or by using other fixing methods, which are not limited here.

[0035] Meanwhile, the length of the soft protector 400 is greater than the length of the tube sleeve 600 sleeved on the lymphatic connecting tube 300. Thus, after the soft protector 400 is sleeved outside the lymphatic connecting tube 300, the free end of the soft protector 400 can extend out of the free end of the tube sleeve 600 and be connected with the lymphatic tube, facilitating the in-surgery sleeving and suturing.

[0036] In addition, in some embodiments, the lymphatic connecting tube 300 is provided in plurality, and the blood vessel connecting member 100 is provided with a plurality of through holes 120 at intervals along the length direction, and each lymphatic connecting tube 300 can pass into the blood vessel connecting member 100 from the corresponding through hole 120 and be fixed to the blood vessel connecting member 100 through the tube sleeve 600.

[0037] In some embodiments, the extension direction of the lymphatic lumbar tube 200 and the extension direction of the blood vessel connecting member 100 form an included angle greater than 0° and less than 90°. The inclined angle design makes the direction of the lymphatic fluid flowing into the blood vessel connecting member 100 more consistent with the direction of the human body lymphatic tube and blood vessel, avoids the backflow of the lymphatic fluid, and can reduce the turbulence and resistance of the lymphatic fluid when flowing in, reduce the risk of anastomotic stoma thrombosis, and is also conducive to the arrangement of the anastomosis instrument in the limited operation space.

[0038] In some embodiments, the two ends of the blood vessel connecting member 100 in the length direction are provided as bevels 110. The design of the bevels 110 can make the end of the blood vessel connecting member 100 form a cutting edge, facilitating the smooth insertion into the blood vessel incision in the operation, reducing the insertion resistance and damage to the blood vessel wall.

[0039] In addition, the anastomosis instrument also includes at least one developing member for developing and positioning in the human body. The developing member can be arranged at any position of the anastomosis instrument. Further, the developing member can be arranged at the two ends of the blood vessel connecting member 100, the lymphatic lumbar tube 200, and the other end of the lymphatic connecting tube 300.

[0040] The above only describes some or preferred embodiments of the present application, and neither the text nor the drawings can limit the scope of protection of the present application. Any equivalent structural transformation based on the content of the specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. An anastomosis device, characterized in that, include: A vascular connector for connecting to blood vessels in the human body, wherein the sidewall of the vascular connector is provided with a through hole, and the vascular connector has two ends, namely a first end and a second end. A lymphatic connection tube, one end of which is connected to the through hole, and the other end of which is used to connect to a lymphatic tube; At least one soft protective element; The flexible protective component is connected to at least one of the first end of the vascular connector, the second end of the vascular connector, and the other end of the lymphatic connection tube.

2. The anastomosis device according to claim 1, characterized in that, There are multiple lymphatic connecting tubes and multiple flexible protective components. One end of each lymphatic connecting tube is connected to the vascular connecting component, and the other end of each lymphatic connecting tube is provided with the flexible protective component.

3. The anastomosis device according to claim 1, characterized in that, It also includes a lymphatic lumbar tube, one end of which is connected to the vascular connector and communicates with the through hole, and the other end of the lymphatic lumbar tube is provided with a drainage hole, which communicates with the lymphatic connecting tube.

4. The anastomosis device according to claim 1, characterized in that, It also includes a connecting structure disposed between the flexible protective member and the lymphatic connecting tube and / or the vascular connecting member, the connecting structure being used to fix the flexible protective member relative to the lymphatic connecting tube and / or the vascular connecting member.

5. The anastomosis device according to claim 4, characterized in that, The connection structure includes barbs that can pierce the inner wall of the soft protective component for connection.

6. The anastomosis device according to claim 4, characterized in that, The connection structure includes a heat shrink collar, which is sleeved on the outside of the flexible protective component.

7. The anastomosis device according to claim 3, characterized in that, The outer peripheral wall of the lymphatic lumbar tube is provided with at least one fastener.

8. The anastomosis device according to claim 1, characterized in that, One end of the lymphatic connection tube extends from the through hole into the interior of the vascular connector. The anastomosis device also includes a sleeve, which is fitted over the outside of the lymphatic connection tube and the vascular connector.

9. The anastomosis device according to claim 1, characterized in that, The anastomosis device is provided with at least one imaging element.

10. The anastomosis device according to claim 1, characterized in that, The vascular connector is a hollow tube, and the flexible protective component is a flexible hose.

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