Vessel flange assembly and vessel anastomosis system

Abstract

The present application provides a blood vessel flanging assembly and a blood vessel anastomosis system, a sleeving element configured to sleeve a target blood vessel, a positioning element configured to be in positioning contact with the sleeving element to thereby fix the position of the target blood vessel relative to the sleeving element, a flanging element having a first sleeving through hole in the interior thereof, the flanging element configured to be movably sleeved with the sleeving element through the first sleeving through hole to thereby apply a flanging force to the target blood vessel sleeved with the sleeving element during movement relative to the sleeving element, the flanging force configured to realize flanging of the target blood vessel. The target blood vessel can be sleeved outside the sleeving element, the positioning element is fitted outside the sleeving element and the target blood vessel, the positioning element is used to cover a blood vessel fixing portion, and the flanging element is sleeved outside the sleeving element and applies the flanging force to a blood vessel flanging portion during movement to thereby turn the blood vessel flanging portion to cover outside the blood vessel fixing portion.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to vascular flange assembly and vascular anastomosis system. Background Technology

[0002] Vascular anastomosis is a crucial technique in vascular surgery. With advancements in technology, standardized vascular anastomosis remains the most widely used technique in clinical practice. This technique must meet the following requirements: avoid post-anastomosis stenosis, ensure tight fusion of the intima at both ends, maintain a smooth vascular lumen as much as possible, and minimize direct contact between the suture material and blood. Commonly used traditional vascular suturing techniques and methods include interrupted sutures, continuous sutures, and mattress sutures.

[0003] The advantage of interrupted sutures is their low learning curve, achieving high patency rates in both arteriovenous and lymphatic anastomoses. However, interrupted sutures require repeating the same action 4-6 times, and repeated knotting increases the surgical time. Continuous sutures not only shorten surgical time (by up to 50%) but also offer similar patency rates to interrupted sutures. However, continuous sutures also have potential drawbacks. A constriction ring may form at the anastomosis site due to excessive suture contraction, leading to anastomotic stenosis and reduced distal blood flow. Furthermore, continuous sutures leave more suture material around the anastomosis, potentially causing inflammation due to increased contact with the vessel wall and even increasing the risk of thrombosis. Repeated needle insertion and withdrawal can damage the vessel wall and intima, increasing the risk of thrombosis. Asymmetrical needle insertion can also lead to anastomotic leakage and luminal stenosis. When anastomosing microvessels, interrupted sutures become significantly more difficult, demanding higher microsurgical skills from the surgeon, while continuous sutures are unsuitable due to their more pronounced drawbacks.

[0004] To reduce suture intrusion into the vessel wall and ensure a smooth intima, research has been conducted on mattress suture eversion. Mattress sutures for small and microvessels can improve anastomosis quality and patency. High survival rates also indicate that this suture technique is reliable and suitable for single-person vascular suture. Although mattress sutures have significant clinical efficacy, the procedure is complex, requires a long learning period, and has high learning costs. Summary of the Invention

[0005] Therefore, it is necessary to provide a vascular flange assembly and a vascular anastomosis system to address the aforementioned technical problems.

[0006] This application provides a blood vessel flanging assembly, the blood vessel flanging assembly comprising:

[0007] A set of components configured for mounting a target blood vessel;

[0008] A positioning element configured to make positioning contact with the housing element, thereby fixing the position of the target blood vessel relative to the housing element;

[0009] A flanged element has a first fitting through hole inside. The flanged element is configured to be movably fitted with the fitting element through the first fitting through hole, thereby applying a flanged force to the target blood vessel fitted on the fitting element during movement relative to the fitting element. The flanged force is configured to achieve flanged flange of the target blood vessel.

[0010] In one embodiment, the positioning element has a second fitting through hole inside, and the positioning element is configured to be movably fitted with the fitting element through the second fitting through hole, thereby adjusting its target position of positioning contact with the fitting element during movement relative to the fitting element, and positioning the target blood vessel relative to the fitting element at the target position.

[0011] In one embodiment, the positioning element includes a main positioning segment and a variable-diameter positioning segment connected to each other, the radial dimension of the variable-diameter positioning segment gradually decreasing along a direction gradually away from the main positioning segment.

[0012] In one embodiment, the kit element has an interconnected main kit segment and an expansion kit segment, the positioning element being configured to engage movably with the main kit segment of the kit element through a second kit through-hole, thereby positioning a portion of the target blood vessel in the main kit segment of the kit element, and the expansion kit segment being configured to expand the radial dimension of the portion of the target blood vessel relative to the main kit segment.

[0013] In one embodiment, the radial dimensions of the main body assembly segment and the expansion assembly segment are different, thereby forming a ring-shaped stepped structure between the main body assembly segment and the expansion assembly segment; or,

[0014] There is a transitional suit segment between the main suit segment and the expansion suit segment, wherein the radial dimension of the transitional suit segment gradually increases in the direction from the main suit segment to the expansion suit segment.

[0015] In one embodiment, the kit components include:

[0016] A cylindrical assembly, comprising interconnected main cylindrical sections and deformable cylindrical sections;

[0017] A fitting rod is configured to be movably fitted within the inner cavity of the fitting cylinder, thereby changing the radial dimension of the deformable cylinder section during movement relative to the fitting cylinder.

[0018] In one embodiment, the assembly includes a main rod segment and a variable-diameter rod segment, the radial dimension of which gradually decreases along a direction gradually away from the main rod segment; and / or,

[0019] The sidewall of the deformable cylindrical section is provided with a dividing notch to divide the deformable cylindrical section into several circumferential unit lobes.

[0020] In one embodiment, the inner wall of the first through-hole of the flanged element is provided with a roughened portion, the roughened portion being configured to increase the contact friction with the target blood vessel; or...

[0021] The flange element is provided with a force-applying part, which is configured to contact the target blood vessel, thereby applying a flange force to the target blood vessel.

[0022] In one embodiment, the number of force-applying parts is configured to be at least two; and / or,

[0023] The force-applying part includes an inner force-applying member and an outer force-applying member. The inner force-applying member is located radially inside the outer force-applying member, and a force-applying gap is formed between the inner force-applying member and the outer force-applying member.

[0024] This application provides a vascular anastomosis system, which includes the vascular flange assembly.

[0025] In the aforementioned vascular flanging assembly and vascular anastomosis system, the target vessel can be fitted onto the outside of the assembly component. Then, a positioning element is assembled onto the outside of both the assembly component and the target vessel, covering the vessel fixation portion. The vascular flanging portion, however, is not covered by the positioning element and remains exposed. At this time, the flanging element is fitted onto the outside of the assembly component, and during movement, a flanging force is applied to the vascular flanging portion, causing it to flip and cover the outside of the vessel fixation portion.

[0026] The aforementioned vascular flanging component can be used for flanging the target vascular vessel, achieving rapid and efficient flanging processing. It can be widely applied to flanging vascular vessels of various sizes, reducing the learning cost and operational difficulty for doctors, and facilitating subsequent mattress anastomosis. This solves the technical problems of long operation time and high learning cost in clinical mattress suturing of vascular vessels.

[0027] Furthermore, after flanging the target blood vessel using the aforementioned vascular flanging assembly, the everted target blood vessel can be fixed and connected to external valves, etc. Simultaneously, using the aforementioned vascular flanging assembly for mattress sutures can also ensure tight adhesion between the intima of the two sutured target blood vessels. Attached Figure Description

[0028] Figure 1 This is an exploded view of a blood vessel flange assembly provided in one embodiment of this application.

[0029] Figure 2 For example Figure 1 The diagram shows the first state of use of the blood vessel flange assembly.

[0030] Figure 3 For example Figure 1 The diagram shows the second state of use of the blood vessel flange assembly.

[0031] Figure 4 This is a schematic diagram of the first state of use of the blood vessel flange assembly provided in another embodiment of this application.

[0032] Figure 5 For example Figure 4 The diagram shows the second state of use of the blood vessel flange assembly.

[0033] Figure 6 This is an exploded view of the blood vessel flange assembly provided in another embodiment of this application.

[0034] Figure 7 For example Figure 6 The diagram shows the status of the blood vessel flange assembly in use.

[0035] Icon labels:

[0036] 1000. Kit components; 2000. Positioning components; 3000. Flanging components;

[0037] 1100. Main assembly section; 1200. Expansion assembly section; 1300. Circular stepped structure; 1400. Transition assembly section; 1500. Assembly cylinder; 1600. Assembly rods;

[0038] 1510, Main cylinder section; 1520, Deformation cylinder section; 1610, Main rod section; 1620, Variable diameter rod section;

[0039] 1521. Dividing notch; 1522. Circumferential unit lobe;

[0040] 2100. Main positioning section; 2200. Variable diameter positioning section;

[0041] 3100, Force-applying part; 3110, Inner force-applying component; 3120, Outer force-applying component; 3130, Force-applying gap. Detailed Implementation

[0042] 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.

[0043] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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.

[0044] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" 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.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] 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.

[0047] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0048] See Figures 1 to 3 As shown, this application provides a blood vessel flanging assembly. The function of the blood vessel flanging assembly is to flanging the target blood vessel, thereby facilitating mattress suturing of the target blood vessel, improving anastomosis quality, and increasing anastomosis patency. The target blood vessel mentioned above refers to a living blood vessel, including human or animal blood vessels, and is not limited thereto.

[0049] Continue reading Figure 1 As shown, the blood vessel flange assembly includes a fitting element 1000, a positioning element 2000, and a flange element 3000. The fitting element 1000 is configured to fit the target blood vessel, so that the target blood vessel is first fitted onto the outside of the fitting element 1000, thereby preparing for flange flangering. At this time, the positioning element 2000 is configured to make positioning contact with the fitting element 1000, thereby fixing the position of the target blood vessel relative to the fitting element 1000, so that the target blood vessel remains stable relative to the fitting element 1000 after being fitted onto it, preventing the target blood vessel from slipping relative to the fitting element 1000 during the flange flangering process.

[0050] It should be noted that, at this time, the target blood vessel is fitted on the vascular portion of the fitting element 1000. One part needs to be positioned using the aforementioned positioning element 2000, which can be called the vascular fixation part. This ensures that the vascular fixation part is not affected by the flanging force of the flanging element 3000. The other part is not positioned by the positioning element 2000 and can be called the vascular flanging part. This vascular flanging part is the part where the flanging force of the flanging element 3000 mainly acts, so that the vascular flanging part can be flanged relative to the vascular fixation part. Thus, the vascular fixation part and the vascular flanging part form the basis of mattress suture.

[0051] like Figure 2 and Figure 3 As shown, the flange element 3000 has a first fitting through hole inside, making the flange element 3000 a ring structure with a through hole. One or both ends of the ring structure can be rounded or chamfered. In addition, the overall shape of the flange element 3000 can be set to other regular or irregular structures, which are not limited here. The flange element 3000 is configured to be movably fitted with the fitting element 1000 through the first fitting through hole, thereby applying a flange force to the target blood vessel fitted on the fitting element 1000 during movement relative to the fitting element 1000. The flange force is configured to achieve flangeing of the target blood vessel.

[0052] Therefore, once the target blood vessel is fitted onto the fitting element 1000, and the positioning element 2000 fixes the position of the blood vessel fixing part, the flange element 3000 can then... Figure 2 The state shown is towards Figure 3 The state transition shown is that the flange element 3000 moves along the path shown in the figure. Figure 2 and Figure 3 The movement from left to right relative to the assembly element 1000 in the indicated orientation applies a flanging force to the flanged portion of the target blood vessel during the movement. This flanging force can be, for example, a pushing force or a frictional force applied to the flanged portion of the blood vessel. This allows the flanged portion of the target blood vessel to be carefully flipped toward the fixed portion of the blood vessel, thereby achieving the flanging of the target blood vessel.

[0053] The positioning contact between the positioning element 2000 and the housing element 1000 includes, but is not limited to, contact methods such as socketing and snap-fitting. In one embodiment, for example... Figures 1 to 3As shown, the positioning element 2000 has a second through hole inside, making it a ring structure with a through hole. Besides this, the overall shape of the positioning element 2000 can also be set to other regular or irregular structures, which are not limited here. In this case, the positioning element 2000 is configured to movably engage with the fitting element 1000 through the second through hole, allowing it to move relative to the fitting element 1000. During this movement relative to the fitting element 1000, the positioning element 2000 can adjust its target position of contact with the fitting element 1000, thereby positioning the target blood vessel relative to the fitting element 1000 at the target position and determining the size of the area of ​​the blood vessel that needs to be fixed to the fitting element 1000.

[0054] For example Figures 1 to 3 As shown, the target blood vessel can be fitted from right to left. Then, the positioning element 2000 is fitted over the fitting element 1000 and the target blood vessel, covering the vessel fixing portion. The flanged portion of the blood vessel is not covered by the positioning element 2000 and is exposed outside of it. At this time, as the flanged element 3000 is fitted over the fitting element 1000 and moves from left to right, a flanged force can be applied to the flanged portion of the blood vessel, causing it to flip and cover the outside of the vessel fixing portion.

[0055] Continue reading Figures 1 to 3 As shown, in one embodiment, the positioning element 2000 includes a main positioning section 2100 and a variable-diameter positioning section 2200 connected to each other. The radial dimension of the variable-diameter positioning section 2200 gradually decreases along the direction gradually moving away from the main positioning section 2100. For example, when the positioning element 2000 adopts a cylindrical structure, the diameter of the variable-diameter positioning section 2200 gradually decreases along the direction gradually moving away from the main positioning section 2100, and the shape of the variable-diameter positioning section can be a frustum structure. In this case, depending on the size of the target blood vessel, the positioning element 2000 can be positioned such that the main positioning section 2100 is oriented as follows: Figures 1 to 3 As shown, the left-facing component 1000 can be fitted together, or the positioning component 2000 can also use a variable-diameter positioning section 2200 facing as shown. Figures 1 to 3 The left-facing direction shown is used to mate with the 1000 set of components.

[0056] In one embodiment, the housing element 1000 also has an interconnected main housing segment 1100 and an expansion housing segment 1200. For example, when the housing element 1000 is a cylindrical structure, the diameter of the main housing segment 1100 is smaller than the diameter of the expansion housing segment 1200. In this case, the positioning element 2000 is configured to movably engage with the main housing segment 1100 of the housing element 1000 through a second housing through-hole, thereby positioning a portion of the target blood vessel, i.e., the blood vessel fixing portion, in the main housing segment 1100 of the housing element 1000. The expansion housing segment 1200 is configured to expand the radial dimension of the portion of the target blood vessel relative to the main housing segment 1100, i.e., the blood vessel flange portion, thereby expanding the radial dimension of the blood vessel flange portion of the target blood vessel based on a larger diameter.

[0057] Continue reading Figures 1 to 3 As shown, in one embodiment, the radial dimensions of the main body assembly segment 1100 and the expansion assembly segment 1200 are different, for example, the diameters of the main body assembly segment 1100 and the expansion assembly segment 1200 are different, thereby forming an annular stepped structure 1300 between the main body assembly segment 1100 and the expansion assembly segment 1200. The assembly element 1000 in this case can be referred to as a right-angle type. The portion of the right-angle assembly element 1000 that mates with the positioning element 2000 is at a right angle. The right-angle portion of the assembly element 1000 can be provided with rounded corners or chamfers.

[0058] Or, see Figure 4 and Figure 5 As shown, a transition section 1400 is provided between the main assembly section 1100 and the expansion assembly section 1200. The radial dimension of the transition section 1400 gradually increases from the main assembly section 1100 to the expansion assembly section 1200. For example, when the assembly element 1000 is a cylindrical structure, the diameter of the transition section 1400 gradually increases along the direction from the main assembly section 1100 to the expansion assembly section 1200. This assembly element 1000 can be referred to as an angled type. The portion of the angled assembly element 1000 that mates with the positioning element 2000 is angled. The angle of this angle can be adjusted according to the size of the target blood vessel. The angled portion of the assembly element 1000 can also be rounded or chamfered.

[0059] At this time, as Figures 1 to 3 As shown, the positioning element 2000 can adopt the main positioning segment 2100 oriented as follows: Figures 1 to 3 The left-facing part 1100 of the main assembly segment 1000 is aligned with the main assembly segment 2100, forming a facing contact between the main positioning segment 2100 and the annular stepped structure 1300. Alternatively, as shown... Figure 4 As shown, the positioning element 2000 can also adopt the orientation of the main positioning segment 2100 as follows: Figure 4The left-facing transition segment 1400 of the assembly component 1000 is shown to mate with it. Alternatively, as... Figure 5 As shown, the positioning element 2000 can also adopt a variable diameter positioning section 2200 oriented as follows: Figure 5 The left-facing transition segment 1400 of the fitting element 1000 is shown to mate with the fitting element 2000. Those skilled in the art can select different mate methods to achieve the fitting between the positioning element 2000 and the fitting element 1000 according to the different sizes of the target blood vessel; no limitation is made here.

[0060] like Figure 6 and Figure 7 As shown, in another embodiment of the assembly element 1000, the assembly element 1000 includes an assembly cylinder 1500 and an assembly rod 1600. In this case, the assembly element 1000 is not constructed as a single element, but rather as a combination of the assembly cylinder 1500 and the assembly rod 1600. The assembly cylinder 1500 includes an interconnected main cylinder segment 1510 and a deformable cylinder segment 1520. The deformable cylinder segment 1520 has the ability to deform its shape. This deformability can be achieved based on a specific material or a specific structure, which is not limited here. For example, the side wall of the deformable cylinder segment 1520 has a dividing notch 1521 to divide the deformable cylinder segment 1520 into several circumferential unit lobes 1522, such as... Figure 6 In the illustrated embodiment, the sidewall of the deformable cylindrical section 1520 has two radially opposite dividing notches 1521, which divide the deformable cylindrical section 1520 into two symmetrical circumferential unit lobes 1522. Apart from this, the number of dividing notches 1521 and the number of circumferential unit lobes 1522 formed can be appropriately changed and are not limited here.

[0061] Therefore, the sleeve member 1600 is configured to be movably fitted within the inner cavity of the sleeve body 1500, allowing axial movement relative to the sleeve body 1500. During this movement relative to the sleeve body 1500, the radial dimension of the deformable cylindrical section 1520 is changed through contact between the sleeve member 1600 and the deformable cylindrical section 1520. For example, if the sleeve body 1500 is a cylindrical structure, the contact between the sleeve member 1600 and the deformable cylindrical section 1520 can be used to change the diameter of the deformable cylindrical section 1520.

[0062] In one embodiment, the sleeve rod 1600 may include a main rod segment 1610 and a variable diameter rod segment 1620. The radial dimension of the variable diameter rod segment 1620 gradually decreases along the direction gradually away from the main rod segment 1610. For example, when the sleeve rod 1600 is a cylindrical rod, the diameter of the variable diameter rod segment 1620 gradually decreases along the direction gradually away from the main rod segment 1610.

[0063] Therefore, when the set of rods 1600 is made of Figure 6 As the device moves from left to right relative to the sleeve 1500, the variable-diameter rod segment 1620 gradually contacts the sleeve 1500 from its smaller radial dimension end to its larger radial dimension end. Therefore, based on the gradual change in the radial dimension of the variable-diameter rod segment 1620, the deformable sleeve segment 1520 of the sleeve 1500 is forced to change its radial dimension, i.e., its radial dimension gradually increases. At this time, the gradual change in the radial dimension of the variable-diameter rod segment 1620 can be adjusted according to the size of the patient's blood vessels.

[0064] Regarding the flanging force applied by the flanging element 3000, in one embodiment, the inner wall of the first through hole of the flanging element 3000 is provided with a roughened portion, which is configured to increase the contact friction between the flanging element and the target blood vessel, thereby forming the aforementioned flanging force. Alternatively, in another embodiment of the flanging element 3000, the flanging element 3000 is provided with a force-applying portion 3100, which is configured to contact the target blood vessel, thereby applying a flanging force to the target blood vessel. In this case, in one embodiment, the number of force-applying portions 3100 is configured to be at least two, for example, two, three or more, and they are evenly distributed along the circumference of the flanging element 3000. Furthermore, the force-applying part 3100 may include an inner force-applying member 3110 and an outer force-applying member 3120. The inner force-applying member 3110 is located radially inside the outer force-applying member 3120, and a force-applying gap 3130 is formed between the inner force-applying member 3110 and the outer force-applying member 3120.

[0065] To more clearly describe the technical content of the above-mentioned blood vessel flange assembly, this application selects the following embodiments to describe the blood vessel flange assembly in detail.

[0066] Example 1

[0067] like Figures 1 to 3 As shown, at this time, the blood vessel flange assembly consists of a right-angled fitting element 1000 and a positioning element 2000 facing each other. In use, the target blood vessel is fitted onto the outside of the fitting element 1000, so that the vessel fixing portion of the target blood vessel is located in the main fitting section 1100 of the fitting element 1000, and the flanged portion of the target blood vessel is located in the expansion fitting section 1200. Then, the positioning element 2000 is pushed towards the side of the fitting element 1000 where the target blood vessel is fitted, as shown. Figure 2 As shown, depending on the different sizes of the target blood vessel, the main positioning segment 2100 or the variable diameter positioning segment 2200 of the positioning element 2000 can be selected to face left and mate with the assembly element 1000. For example, when the diameter of the target blood vessel is large, the main positioning segment 2100 is selected to face left and mate with the assembly element 1000; when the diameter of the target blood vessel is small, the variable diameter positioning segment 2200 is selected to face left and mate with the assembly element 1000.

[0068] After ensuring that the positioning element 2000 and the set element 1000 are gently aligned, the blood vessel fixing part inside the positioning element 2000 is secured. At this point, push the flange element 3000 along the direction from the set element 1000 to the positioning element 2000. The flange element 3000 will cause the blood vessel flange part on the set element 1000 to move to the right. Since the blood vessel fixing part inside the positioning element 2000 is secured, the blood vessel flange part will be flanged and fitted onto the positioning element 2000 as the flange element 3000 moves. During this process, the position of the flange element 3000 relative to the positioning element 2000 can be controlled to control the degree of flangering of the blood vessel flange part, facilitating subsequent mattress anastomosis.

[0069] Example 2

[0070] See Figure 4 and Figure 5 As shown, at this time, the blood vessel flange assembly consists of an angled assembly 1000 and a positioning element 2000 that face each other, compared to... Figures 1 to 3 In the right-angled embodiment 1 shown, a transition sleeve segment 1400 is provided between the main sleeve segment 1100 and the expansion sleeve segment 1200, making it easier to fit into the target blood vessel. The remaining operating principles are the same. Figures 1 to 3 The right-angled embodiment shown is the same as that in Example 1. Figure 4 The diagram shows the initial working state of the blood vessel flanging assembly. After the target blood vessel is fitted onto the transition fitting section 1400 of the fitting element 1000, the flanging element 3000 is pushed towards the positioning element 2000. At this time, the flanging element 3000 can drive the flanged portion of the blood vessel fitted onto the positioning element 2000 to move to the right and complete the flanging. The working state after the flanging is completed is as follows. Figure 5 As shown.

[0071] Example 3

[0072] See Figure 6 and Figure 7As shown, the sleeve rod 1600 is used to expand the deformable cylindrical section 1520 of the sleeve body 1500, and the force application part 3100 can realize the flanging of the blood vessel. After flanging, the flanged blood vessel will be fitted onto the positioning element 2000. During operation, the target blood vessel is fitted onto the sleeve body 1500, and then the sleeve rod 1600 is inserted into the sleeve body 1500. As the sleeve rod 1600 moves forward, the deformable cylindrical section 1520 of the sleeve body 1500 will be expanded, thereby opening the target blood vessel. At this time, the flanging element 3000 is pushed forward, and the inner force-applying member 3110 of the flanging element 3000 will penetrate into the inner wall of the target blood vessel, while the outer force-applying member 3120 will press against the outer wall of the target blood vessel, thereby clamping the flanged portion of the target blood vessel within the force-applying gap 3130. Under the clamping of the inner force-applying member 3110 and the outer force-applying member 3120, the flanged portion of the target blood vessel will move forward together with the flanging element 3000 and flanged onto the positioning element 2000.

[0073] Therefore, the above-mentioned vascular flanging component can be used for flanging operations of target blood vessels, achieving rapid and efficient flanging processing. It can be widely applied to flanging of blood vessels of various sizes, reducing the learning cost and operational difficulty for doctors, and facilitating doctors to perform subsequent mattress anastomosis. This solves the technical problems of long operation time and high learning cost in clinical mattress suturing of blood vessels.

[0074] Furthermore, after flanging the target blood vessel using the aforementioned vascular flanging assembly, the everted target blood vessel can be fixed and connected to external valves, etc. At the same time, using the aforementioned vascular flanging assembly for vascular mattress sutures can also ensure that the intima of the two sutured target blood vessels are tightly joined.

[0075] This application provides a vascular anastomosis system, which includes a vascular flanging assembly. Since the specific structure, functional principle, and technical effects of the aforementioned vascular flanging assembly have been described in detail above, they will not be repeated here. Any technical details regarding the aforementioned vascular flanging assembly can be found in the foregoing description.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A blood vessel flange assembly, characterized in that, The blood vessel flange assembly includes: A kit element (1000) configured for mounting a target blood vessel; A positioning element (2000) is configured to make positioning contact with the housing element (1000), thereby fixing the position of the target blood vessel relative to the housing element (1000); A flange element (3000) has a first fitting through hole inside. The flange element (3000) is configured to be movably fitted with the fitting element (1000) through the first fitting through hole, thereby applying a flange force to the target blood vessel fitted on the fitting element (1000) during movement relative to the fitting element (1000). The flange force is configured to achieve flangeing of the target blood vessel.

2. The blood vessel flange assembly according to claim 1, characterized in that, The positioning element (2000) has a second fitting through hole inside. The positioning element (2000) is configured to be movably fitted with the fitting element (1000) through the second fitting through hole, thereby adjusting its target position of positioning contact with the fitting element (1000) during movement relative to the fitting element (1000), and positioning the target blood vessel relative to the fitting element (1000) at the target position.

3. The blood vessel flange assembly according to claim 2, characterized in that, The positioning element (2000) includes a main positioning section (2100) and a variable diameter positioning section (2200) connected to each other, wherein the radial dimension of the variable diameter positioning section (2200) gradually decreases along the direction gradually away from the main positioning section (2100).

4. The blood vessel flange assembly according to claim 2, characterized in that, The kit element (1000) has an interconnected main kit segment (1100) and an expansion kit segment (1200). The positioning element (2000) is configured to engage with the main kit segment (1100) of the kit element (1000) through a second kit through-hole, thereby positioning a portion of the target blood vessel in the main kit segment (1100) of the kit element (1000). The expansion kit segment (1200) is configured to expand the radial dimension of the portion of the target blood vessel relative to the main kit segment (1100).

5. The blood vessel flange assembly according to claim 4, characterized in that, The main body assembly segment (1100) and the expansion assembly segment (1200) have different radial dimensions, thereby forming an annular stepped structure (1300) between the main body assembly segment (1100) and the expansion assembly segment (1200); or, There is a transition segment (1400) between the main assembly segment (1100) and the expansion assembly segment (1200), wherein the radial dimension of the transition assembly segment (1400) gradually increases in the direction from the main assembly segment (1100) to the expansion assembly segment (1200).

6. The blood vessel flange assembly according to claim 2, characterized in that, The kit components (1000) include: The sleeve body (1500) includes a main sleeve section (1510) and a deformable sleeve section (1520) connected to each other; A fitting rod (1600) is configured to be movably fitted within the inner cavity of the fitting cylinder (1500), thereby changing the radial dimension of the deformable cylinder section (1520) during movement relative to the fitting cylinder (1500).

7. The blood vessel flange assembly according to claim 6, characterized in that, The assembly member (1600) includes a main member segment (1610) and a variable diameter member segment (1620), the radial dimension of which gradually decreases along a direction gradually away from the main member segment (1610); and / or, The sidewall of the deformable cylindrical section (1520) is provided with a dividing notch (1521) for dividing the deformable cylindrical section (1520) into several circumferential unit lobes (1522).

8. The blood vessel flange assembly according to claim 1, characterized in that, The inner wall of the first set of through holes of the flanged element (3000) is provided with a roughened portion, which is configured to increase the contact friction with the target blood vessel; or... The flange element (3000) is provided with a force-applying part (3100), which is configured to contact the target blood vessel, thereby applying a flange force to the target blood vessel.

9. The blood vessel flange assembly according to claim 8, characterized in that, The number of the force-applying parts (3100) is configured to be at least two; and / or, The force-applying part (3100) includes an inner force-applying member (3110) and an outer force-applying member (3120). The inner force-applying member (3110) is located radially inside the outer force-applying member (3120), and a force-applying gap (3130) is formed between the inner force-applying member (3110) and the outer force-applying member (3120).

10. A vascular anastomosis system, characterized in that, The vascular anastomosis system includes the vascular flange assembly as described in any one of claims 1-9.

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