Vascular anastomosis device capable of adjusting anastomosis distance
By designing a vascular anastomosis device with adjustable anastomosis spacing, the problems of complex vascular anastomosis operation and inadequate pressure control in the prior art have been solved, thus achieving accuracy and safety in vascular anastomosis.
Patent Information
- Application Number
- CN202511738549.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-01-02
AI Technical Summary
Existing vascular anastomosis methods, such as manual suturing, are complex and time-consuming. Mechanical anastomosing devices require precise positioning and appropriate pressure; insufficient pressure leads to bleeding, while excessive pressure leads to tissue necrosis.
Design a vascular anastomosis device with adjustable anastomosis spacing. The device uses a drive module to move the anastomosis rings and adjusts the anastomosis ring spacing to control the pressure, ensuring the accuracy and appropriate pressure of vascular anastomosis.
It achieves accuracy and safety in vascular anastomosis, avoids blood leakage and tissue necrosis, and simplifies the operation process.
Smart Images
Figure CN121242658A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical devices, specifically to a vascular anastomosis device with adjustable anastomosis spacing. Background Technology
[0002] Vascular anastomosis techniques are widely used in clinical departments. Currently, the most common method for vascular anastomosis in clinical practice is manual suturing. However, this method is complex, labor-intensive, and time-consuming. Furthermore, the suture needles can damage the vessel wall and intima, and the non-absorbable sutures can cause long-term foreign body reactions and come into direct contact with the blood, affecting the long-term patency of the vessel. To improve the quality and efficiency of vascular anastomosis, many methods have been developed, including mechanical anastomosis, laser anastomosis, and adhesive methods.
[0003] Among mechanical anastomosis devices, the Coupler vascular anastomosis device, invented using the needle-loop method, is comparable to the suturing method. When performing vascular anastomosis with the Coupler device, it is first necessary to ensure precise positioning of the cut ends of the two vessels to facilitate anastomosis. Secondly, the Coupler vascular anastomosis device needs to apply appropriate pressure to the two vessels. Insufficient pressure leads to bleeding, while excessive pressure leads to tissue necrosis. Therefore, the Coupler vascular anastomosis device requires different pressure values for different vessels. Summary of the Invention
[0004] To solve the above-mentioned technical problems, this application provides the following technical solution:
[0005] This application provides a vascular anastomosis device with adjustable anastomosis spacing, comprising:
[0006] Two anastomotic rings, each with a matching limiting hole. One end face of the anastomotic ring is provided with an anastomotic needle and an anastomotic hole, wherein the anastomotic needle and anastomotic hole on one anastomotic ring respectively mate with the anastomotic hole and anastomotic needle on the other anastomotic ring.
[0007] A drive module, which cooperates with the first and / or second anastomosis rings to drive the first and second anastomosis rings to move relative to each other.
[0008] In one embodiment, the anastomosis needles and anastomosis holes are circumferentially distributed outside the limiting hole.
[0009] In one embodiment, the anastomosis needles and anastomosis holes are arranged alternately circumferentially outside the limiting hole.
[0010] In one embodiment, the drive module includes an outer sleeve that is fitted over the outside of the second anastomosis ring. The outer sleeve has a first limiting ring, and the first anastomosis ring has an adjustment part that cooperates with the first limiting ring. The outer sleeve drives the second anastomosis ring to move, thereby adjusting the distance between the first and second anastomosis rings.
[0011] In one embodiment, the adjusting part has a slope, the height of which extends from the front end to the rear end of the adjusting part from low to high. The outer sleeve rotates, causing the second matching ring to partially contact the slope.
[0012] In one embodiment, the first limiting ring has a notch into which the adjusting part extends.
[0013] In one embodiment, the outer sleeve has scale markings on its side and the first mating ring has alignment markings, with the scale markings corresponding to the alignment markings.
[0014] In one embodiment, a first limiting ring is located on one end of the outer sleeve, and a second limiting ring is provided at the other end of the outer sleeve. The second anastomosis ring includes a fixing tube, and a limiting protrusion is provided on the outer side of the fixing tube. The second limiting ring can block the limiting protrusion to limit the position of the second anastomosis ring inside the outer sleeve.
[0015] In one embodiment, the inner ring of the second limiting ring is surrounded by a first through hole, the second matching ring is located inside the outer sleeve, and one end of the fixing tube extends outward from the first through hole.
[0016] In one embodiment, the first anastomosis ring includes a base, an anastomosis hole, an anastomosis needle, and an adjustment part disposed on the same side of the base, with the adjustment part located outside the anastomosis needle.
[0017] This application has at least the following beneficial effects:
[0018] The vascular anastomosis device provided in this application firstly ensures the accuracy of vascular anastomosis by cooperating with the anastomosis needles and anastomosis holes of the two anastomosis rings. Secondly, the anastomosis rings are driven by a drive module, allowing the relative position of the two anastomosis rings to be adjusted. This facilitates the adjustment of the pressure applied to the blood vessel by the two anastomosis rings, ensuring that the blood vessel will not leak due to insufficient pressure, nor will it cause tissue necrosis due to excessive pressure. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural schematic diagram of a vascular anastomosis device provided in an embodiment of this application.
[0020] Figure 2 This is an exploded schematic diagram of a vascular anastomosis device provided in an embodiment of this application.
[0021] Figure 3 A three-dimensional structural diagram of the first and second anastomotic rings provided in an embodiment of this application.
[0022] Figure 4 This is a three-dimensional structural schematic diagram of the first anastomotic ring provided in an embodiment of this application.
[0023] Figure 5 This is a three-dimensional structural schematic diagram of the second anastomotic ring provided in an embodiment of this application.
[0024] Figure 6 This is a three-dimensional structural diagram of the outer sleeve provided in an embodiment of this application.
[0025] Figure 7 This is a partial cross-sectional view of a vascular anastomosis device provided in an embodiment of this application.
[0026] Figure 8 for Figure 7 A magnified view of a portion of point A in the middle.
[0027] Figure 9 This is a schematic diagram of vascular anastomosis of a vascular anastomosis device provided in an embodiment of this application.
[0028] Figure 10 This is a schematic diagram of vascular anastomosis of a first anastomotic ring and a second anastomotic ring provided in an embodiment of this application.
[0029] Figure label:
[0030] 1. First anastomotic ring; 101. First limiting hole;
[0031] 11. Base; 12. Stepped section; 13. First anastomotic pin; 14. Adjustment section;
[0032] 111. First matching hole; 112. Alignment scale;
[0033] 121. First positioning hole;
[0034] 141. Slope;
[0035] 2. Second anastomotic ring; 201. Second limiting hole;
[0036] 21. Fixing tube; 22. Limiting boss; 23. Second anastomotic needle;
[0037] 211. Second positioning hole; 212. Second mating hole;
[0038] 3. Outer tube;
[0039] 31. First through hole; 32. First limiting ring; 33. Notch; 34. Scale mark; 35. Second limiting ring;
[0040] 41. First blood vessel; 42. Second blood vessel;
[0041] 411. First eversion end;
[0042] 421. Second eversion end. Detailed Implementation
[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0044] In the description of this application, it should be understood that if terms such as "length", "width", "thickness", "upper", "lower", "vertical", "inner", "outer", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0045] Furthermore, where the term "first" appears, it is for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0048] The embodiments of this application are described in detail below with reference to the accompanying drawings.
[0049] Reference Figure 1-3 As shown, some embodiments of this application provide a vascular anastomosis device with adjustable anastomosis spacing, including: a first anastomosis ring 1, a second anastomosis ring 2, and a driving module. The driving module cooperates with the first anastomosis ring 1 and / or the second anastomosis ring 2 to drive the first anastomosis ring 1 to move relative to the second anastomosis ring 2. The first anastomosis ring 1 and the second anastomosis ring 2 are respectively provided with a first limiting hole 101 and a second limiting hole 201, which respectively penetrate the opposite end faces of the first anastomosis ring 1 and the second anastomosis ring 2. Figure 9 , 10 As shown, both the first limiting hole 101 and the second limiting hole 201 are used to accommodate blood vessels (41, 42). The first anastomosis ring 1 and the second anastomosis ring 2 are arranged opposite to each other, specifically, the first limiting hole 101 and the second limiting hole 201 are coaxially arranged, so that the first blood vessel 41 and the second blood vessel 42 are aligned. Under the drive of the driving module, the first anastomosis ring 1 and the second anastomosis ring 2 move closer to each other, and finally the two ends of the first blood vessel 41 and the second blood vessel 42 are attached, and the first blood vessel 41 and the second blood vessel 42 are connected to each other after healing.
[0050] In this scheme, combined with Figure 4-6 As shown, two anastomotic rings (1, 2) are provided with anastomotic needles (13, 23) and anastomotic holes (111, 212) on their close-to-each end faces. The anastomotic needles (13, 23) and anastomotic holes (111, 212) on one anastomotic ring (1, 2) respectively mate with the anastomotic holes (212, 111) and anastomotic needles (23, 13) on the other anastomotic ring (2, 1). Under the drive of the drive module, the first anastomotic needle 13 on the first anastomotic ring 1 extends into the second anastomotic hole 212 on the second anastomotic ring 2, and at the same time, the second anastomotic needle 23 on the second anastomotic ring 2 extends into the anastomotic hole 111 on the first anastomotic ring 1. By cooperating with the anastomosis needles (13, 23) and anastomosis holes (111, 212) on the two anastomosis rings (1, 2), when the first anastomosis ring 1 moves relative to the second anastomosis ring 2, the movement trajectory is restricted to ensure that the first limiting hole 101 can still be aligned with the second limiting hole 201 during movement.
[0051] In addition, the anastomotic needles (13, 23) can also fix the blood vessels (41, 42) onto the corresponding anastomotic rings (1, 2). Specifically, the ends of the blood vessels (41, 42) that are close to each other are folded outwards, and the folded ends (411, 421) of the blood vessels (41, 42) are fixed onto the corresponding anastomotic needles (13, 23). Driven by the drive module, the two folded ends (411, 421) approach each other until they fit together. After a period of time, the two folded ends (411, 421) heal and connect with each other. The anastomotic needles (13, 23) fix the folded ends (411, 421) to ensure that the position of the two folded ends (411, 421) is accurate during the fitting process.
[0052] Since the drive module can move the first anastomosis ring 1 and / or the second anastomosis ring 2, thereby adjusting the distance between the first anastomosis ring 1 and the second anastomosis ring 2, a certain clamping force can be applied to the everted end (411, 421) by using the first anastomosis ring 1 and the second anastomosis ring 2. By adjusting the distance between the first anastomosis ring 1 and the second anastomosis ring 2, it is also possible to control the appropriate clamping force applied to the everted end (411, 421), ensuring that the blood vessel does not leak blood due to insufficient pressure, and also ensuring that the tissue does not die due to excessive pressure.
[0053] Furthermore, the anastomotic needles (13, 23) and anastomotic holes (111, 212) are circumferentially distributed outside the limiting holes (101, 201). More specifically, the anastomotic needles (13, 23) and anastomotic holes (111, 212) are alternately arranged circumferentially outside the limiting holes (101, 201). For example, an anastomotic ring (1, 2) has four anastomotic needles (13, 23) and four anastomotic holes 111 on its end face, and the four anastomotic needles (13, 23) and four anastomotic holes (111, 212) are alternately and evenly surrounding the limiting holes (101, 201).
[0054] In this scheme, since the anastomosis needles (13, 23) and anastomosis holes 111 on one anastomosis ring (1, 2) cooperate with the anastomosis holes (212, 111) and anastomosis needles (23, 13) on the other anastomosis ring (2, 1), under the drive of the drive module, they are guided by the anastomosis needles (13, 23) and anastomosis holes (111, 212) to limit the trajectory of the first anastomosis ring 1 relative to the second anastomosis ring 2. Furthermore, since multiple anastomosis needles (13, 23) and anastomosis holes (111, 212) cooperate, the stability of the movement of the first anastomosis ring 1 relative to the second anastomosis ring 2 is improved.
[0055] In some embodiments of this application, reference is made to Figure 4-8As shown, the drive module moves the second anastomosis ring 2 closer to the first anastomosis ring 1. In this solution, the drive module includes an outer sleeve 3, which is sleeved on the outside of the second anastomosis ring 2. The outer sleeve 3 has a first limiting ring 32, and the first anastomosis ring 1 has an adjustment part 14. The adjustment part 14 cooperates with the first limiting ring 32, and the outer sleeve 3 drives the second anastomosis ring 2 to adjust the distance between it and the first limiting ring 32.
[0056] Specifically, the adjusting part 14 has a groove that engages with the second anastomosis ring 2, so that a portion of the second anastomosis ring 2 is stuck in the groove. Through the engagement of the groove with the second anastomosis ring 2, the adjusting part 14 can rotate relative to the first anastomosis ring 1.
[0057] Meanwhile, the first limiting ring 32 has a contact surface, and the adjusting part 14 has a slope 141, which is a groove wall surface of the aforementioned groove. The height of the slope 141 extends from low to high from the front end to the rear end of the adjusting part 14, making the slope 141 inclined relative to the contact surface. When the outer sleeve 3 rotates, the contact surface comes into partial contact with the slope 141. By the contact surface of the first limiting ring 32 coming into contact with different positions of the slope 141, the position of the outer sleeve 3 relative to the first matching ring 1 changes. The outer sleeve 3 drives the second matching ring 2 to move, thereby changing the distance between the second matching ring 2 and the first limiting ring 32.
[0058] More specifically, the first limiting ring 32 is provided with a notch 33, into which the adjusting part 14 extends, allowing the adjusting part 14 to separate from the first limiting ring 32. When the outer sleeve 3 rotates, the edge formed by the side of the notch 33 and the contact surface slides on the slope 141. In addition, to ensure the stability of the rotation of the outer sleeve 3, at least two adjusting parts 14 are provided on the first mating ring 1, and the two adjusting parts 14 are symmetrically arranged. The number of notches 33 on the first limiting ring 32 is consistent with the number of adjusting parts 14. When the outer sleeve 3 rotates, the adjusting part 14 has at least two contact points with the first mating ring 1, improving stability. It can be understood that if the number of adjusting parts 14 is greater than two, the adjusting parts 14 can be evenly distributed on the circumferential outer side of the first limiting hole 101.
[0059] The first anastomotic ring 1 includes a base 11 and a stepped portion 12, which are integrally formed, giving the main structure of the first anastomotic ring 1 a stepped shape. The diameter of the base 11 is larger than the diameter of the stepped portion 12. Anastomotic holes 111, first anastomotic needles 13, and adjusting portions 14 are located on the same surface of the base 11, with the adjusting portion 14 located outside the first anastomotic needles 13. The anastomotic holes 111 and the first anastomotic needles 13 are located on the same reference circle (first reference circle), and multiple adjusting portions 14 are located on the same reference circle (second reference circle). The first limiting hole 101, the first reference circle, and the second reference circle are concentrically arranged. The diameter of the first limiting hole 101 is smaller than the diameter of the first reference circle, and the diameter of the first reference circle is smaller than the diameter of the second reference circle.
[0060] Furthermore, the outer sleeve 3 has a scale mark 34 on its side, and the first anastomosis ring 1 has a calibration scale 112. The scale mark 34 is positioned corresponding to the calibration scale 112. The scale mark 34 is located on the outer annular surface of the outer sleeve 3, and is positioned closer to the first anastomosis ring 1. Corresponding to the scale mark 34, the calibration scale 112 is positioned closer to the outer sleeve 3, so that the scale mark 34 and the calibration scale 112 can be used together to observe and confirm the distance between the first anastomosis ring 1 and the second anastomosis ring 2.
[0061] In this design, the outer sleeve 3 rotates, causing the first limiting ring 32 to slide on the slope 141 of the adjusting part 14, thereby adjusting the distance between the outer sleeve 3 and the first mating ring 1. Simultaneously, the outer sleeve 3 can move the second mating ring 2. It is evident that the rotation angle of the outer sleeve 3 is related to the distance it moves. Therefore, in this design, through the cooperation of the scale markings 34 and the alignment scale 112, the user can clearly obtain the accurate rotation angle value of the outer sleeve 3. Based on the relationship between the rotation angle and the moving distance of the outer sleeve 3, the moving distance of the outer sleeve 3 can be obtained, thereby determining the distance between the first mating ring 1 and the second mating ring 2.
[0062] It should be noted that the driving method of the drive module includes, but is not limited to, rotating the outer sleeve 3 to adjust the distance between the first anastomosis ring 1 and the second anastomosis ring 2. The drive module can also be a fixed plate and a lead screw. The fixed plate is connected to the first anastomosis ring 1 and / or the second anastomosis ring 2, and the lead screw is threadedly connected to the fixed plate. By rotating the lead screw, the fixed plate, the first anastomosis ring 1 and / or the second anastomosis ring 2 are moved.
[0063] When the drive module consists of a fixed plate and a lead screw, specifically, a first positioning hole 121 and a second positioning hole 211 are respectively provided on the opposite end faces of the first mating ring 1 and the second mating ring 2. The two fixed plates are respectively attached to the opposite end faces of the first mating ring 1 and the second mating ring 2. A pin is installed on the fixed plate, which can extend into the first positioning hole 121 or the second positioning hole 211, so that the fixed plate is connected to the first mating ring 1 or the second mating ring 2. The two ends of the lead screw are respectively provided with threads of opposite directions. The two fixed plates are connected to the same lead screw. When the lead screw rotates, the fixed plate can push the first mating ring 1 and the second mating ring 2 to move towards each other.
[0064] In some embodiments of this application, a first limiting ring 32 is located at one end of the outer sleeve 3, and a second limiting ring 35 is provided at the other end of the outer sleeve 3. The second anastomosis ring 2 includes a fixing tube 21, and a second limiting hole 201 is provided on the fixing tube 21, making the cross-section of the fixing tube 21 annular. A limiting protrusion 22 is provided around the outer surface of the fixing tube 21, and the second limiting ring 35 can block the limiting protrusion 22 to limit the position of the second anastomosis ring 2 inside the outer sleeve 3. At the same time, when the outer sleeve 3 moves toward the first anastomosis ring 1, the second anastomosis ring 2 moves together with the outer sleeve 3 due to the contact between the second limiting ring 35 and the limiting protrusion 22.
[0065] In addition, the inner ring of the second limiting ring 35 is surrounded by a first through hole 31, the second anastomosis ring 2 is located inside the outer sleeve 3, and one end of the fixing tube 21 extends outward from the first through hole 31. When the second blood vessel 42 passes through the second limiting hole 201, it is away from the outer sleeve 3 to prevent damage to the second blood vessel 42 from rotation of the outer sleeve 3.
[0066] In this scheme, the first anastomosis ring 1, the second anastomosis ring 2, and the outer sheath 3 are made of biodegradable materials. After the vascular anastomosis is completed (the outer sheath 3 is used to adjust the first anastomosis ring 1 and the second anastomosis ring 2 to the appropriate pressure in the blood vessel), the first anastomosis ring 1, the second anastomosis ring 2, and the outer sheath 3 remain in the body. During the repair process of the blood vessel, they can be degraded and absorbed or excreted, and eventually disappear from the body.
[0067] The above embodiments are used to further illustrate this application, but do not limit this application to these specific implementations. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be understood as falling within the protection scope of this application.
Claims
1. A vascular anastomosis device with adjustable anastomosis spacing, characterized in that, include: Two anastomotic rings (1, 2) are provided, each with a matching limiting hole (101, 201). One end face of the anastomotic ring (1, 2) is provided with anastomotic needle (13, 23) and anastomotic hole (111, 212). The anastomotic needle (13, 23) and anastomotic hole (111, 212) on one anastomotic ring (1, 2) respectively mate with the anastomotic hole (212, 111) and anastomotic needle (23, 13) on the other anastomotic ring (2, 1). A drive module, which cooperates with a first anastomosis ring (1) and / or a second anastomosis ring (2) to drive the first anastomosis ring (1) and the second anastomosis ring (2) to move relative to each other.
2. The vascular anastomosis device according to claim 1, characterized in that, The anastomosis needles (13, 23) and the anastomosis holes (111, 212) are circumferentially distributed outside the limiting holes (101, 201).
3. The vascular anastomosis device according to claim 1 or 2, characterized in that, The anastomosis needles (13, 23) and the anastomosis holes (111, 212) are alternately arranged circumferentially outside the limiting holes (101, 201).
4. The vascular anastomosis device according to claim 1, characterized in that, The drive module includes an outer tube (3), which is sleeved on the outside of the second anastomosis ring (2). The outer tube (3) has a first limiting ring (32), and the first anastomosis ring (1) is provided with an adjustment part (14). The adjustment part (14) cooperates with the first limiting ring (32). The outer tube (3) drives the second anastomosis ring (2) to move, so as to adjust the distance between the first anastomosis ring (1) and the second anastomosis ring (2).
5. The vascular anastomosis device according to claim 4, characterized in that... The adjustment part (14) has a slope (141), the height of which extends from the front end to the rear end of the adjustment part (14) from low to high. The outer sleeve (3) rotates, causing the first limiting ring (32) to partially contact the slope (141).
6. The vascular anastomosis device according to claim 5, characterized in that, The first limiting ring (32) has a notch (33) for the adjustment part (14) to extend into.
7. The vascular anastomosis device according to claim 5, characterized in that, The outer sleeve (3) has a scale mark (34) on its side, and the first matching ring (1) has a calibration scale (112) on its side. The scale mark (34) corresponds to the calibration scale (112).
8. The vascular anastomosis device according to claim 4, characterized in that, The first limiting ring (32) is located on one end of the outer tube (3), and the other end of the outer tube (3) is provided with a second limiting ring (35). The second anastomosis ring (2) includes a fixing tube (21), and a limiting boss (22) is provided on the outer side of the fixing tube (21). The second limiting ring (35) can block the limiting boss (22) to limit the position of the second anastomosis ring (2) inside the outer tube (3).
9. The vascular anastomosis device according to claim 8, characterized in that, The inner ring of the second limiting ring (35) is surrounded by a first through hole (31), the second matching ring (2) is located inside the outer sleeve (3), and one end of the fixing tube (21) extends outward from the first through hole (31).
10. The vascular anastomosis device according to claim 4, characterized in that, The first anastomosis ring (1) includes a base (11), the anastomosis hole (111), the anastomosis needles (13, 23) and the adjustment part (14) are located on the same side of the base (11), and the adjustment part (14) is located outside the anastomosis needles (13, 23).