Magnetic blood vessel anastomat

Abstract

The application provides a magnetic blood vessel anastomosis assembly, which comprises two sets of blood vessel turning butt joint components, each set of blood vessel turning butt joint component comprises a turning ring and a fixing ring. The blood vessel is turned through the turning inner hole by using the turning ring, the blood vessel port is on the same side of the turning support part, and the extension length of the blood vessel port is approximately equal to the height of the turning support part. The fixing ring and the turning ring are connected together due to the cooperation of the second magnetic component and the first magnetic component, so that the turned blood vessel is fixed between the fixing inner hole and the turning support part. After the turning and fixing of the turning ring of the two sets of blood vessel turning butt joint components on the blood vessel end are completed, the anastomosis of the two blood vessels is carried out. The two ends of the blood vessels are directly contacted, and the opposite surfaces of the two sets of blood vessel turning butt joint components are tightly combined due to the magnetic attraction of the two sets of blood vessel turning butt joint components, so that the anastomosis of the blood vessels is realized.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a magnetic vascular anastomosis device. Background Technology

[0002] Vascular anastomosis techniques are widely used in various surgical procedures, including traditional manual anastomosis and techniques assisted by mechanical instruments or other equipment. Manual anastomosis is the most common technique, typically using fine needles and sutures to adjust vascular tension before closing the suture, followed by the manual anastomosis by a skilled nurse or surgeon. With technological advancements, various mechanical instruments have been developed for vascular anastomosis, specifically using specialized devices to replace sutures. These include the "staple method," cannula method, magnetic tube method, circular needle method, electric suture machine method, accelerated suture machine method, and ultrasonic anastomosis method.

[0003] Despite significant advancements in vascular anastomosis techniques over the past decade, several challenges and limitations remain. First, traditional manual anastomosis techniques struggle to guarantee precision and strength, heavily reliant on the skill level of the nurse or surgeon. Consequently, if the anastomosed vascular suture is not tight enough, suture breakage can easily occur. Furthermore, the mechanical instruments and equipment involved in vascular anastomosis also pose certain risks; for example, traditional suturing machines may damage the vessel, while ultrasonic anastomosing devices may interfere with the internal structure of the blood vessel. Summary of the Invention

[0004] The main objective of this invention is to provide a magnetic suction vascular anastomosis device to solve the problems of difficult operation and easy damage to blood vessels in the prior art vascular anastomosis technology, and to make the process of inverting the blood vessel wall easier to operate through structural design.

[0005] To achieve the above objectives, the present invention provides a magnetic vascular anastomosis assembly, comprising two sets of vascular flipping and docking components. Each set of vascular flipping and docking components includes: a flipping ring, comprising a flipping ring body and a flipping support portion, the flipping support portion being disposed in the middle of the flipping ring body and protruding relative to the flipping ring body; the flipping ring also includes a flipping inner hole penetrating the flipping ring body and the flipping support portion; the flipping ring also includes a first magnetic component disposed on the flipping ring body; and a fixing ring, comprising a fixing ring body, the fixing ring body having a fixing inner hole, the inner diameter of the fixing inner hole being larger than the outer diameter of the flipping support portion, the fixing inner hole being used to fit around the outside of the flipping support portion, the depth of the fixing inner hole being less than or equal to the height of the flipping support portion; the fixing ring also includes a second magnetic component disposed on the fixing ring body, the second magnetic component cooperating and connecting with the first magnetic component; the two sets of vascular flipping and docking components are connected through corresponding second magnetic components.

[0006] In one embodiment, a flipping contact surface is formed on the flipping ring body, and a fixing contact surface is formed on the fixing ring body, wherein the flipping contact surface and the fixing contact surface are in contact.

[0007] In one embodiment, the outer diameters of the flip ring body and the fixed ring body are the same.

[0008] In one embodiment, the flip ring body has a first mounting hole, and a first magnetic component is installed in the first mounting hole; the fixed ring body has a second mounting hole, and a second magnetic component is installed in the second mounting hole.

[0009] In one embodiment, there are multiple first mounting holes and multiple first magnetic components, as well as multiple second mounting holes and multiple second magnetic components, with each first mounting hole corresponding to a second mounting hole.

[0010] In one embodiment, the flip ring body has a flip ring positioning groove, and the fixed ring body has a fixed ring positioning groove corresponding to the flip ring positioning groove.

[0011] In one embodiment, the magnetic vascular anastomosis assembly further includes an auxiliary positioning tool, which includes a positioning straight segment. The positioning straight segment is used to cooperate with the flip ring positioning groove and the fixing ring positioning groove of the two sets of vascular flipping docking components to achieve positioning of the two sets of vascular flipping docking components.

[0012] In one embodiment, the positioning tool further includes a handle, and the positioning straight segment is mounted to the handle via an intermediate connecting segment.

[0013] Applying the technical solution of this invention, in use, the blood vessel at one end to be anastomosed is first flipped and fixed. A flipping ring is used to pass the blood vessel through the flipping inner hole, with the blood vessel end on the same side as the flipping support, and the protruding length of the blood vessel end approximately equal to the height of the flipping support. The blood vessel is flipped, using the flipping support as a supporting component, and the flipped blood vessel adheres to the outside of the flipping support. Then, a fixing ring is used, inserted from the direction of the fixing ring flipping support, with the fixing surface facing the flipping surface, and the fixing ring flipping support, which encloses the flipped blood vessel, passes through the fixing inner hole. Since the second magnetic component cooperates with the first magnetic component, the fixing ring and the flipping ring can be connected together, thereby fixing the flipped blood vessel between the fixing inner hole and the flipping support. The inner diameter of the fixing inner hole is larger than the outer diameter of the flipping support, allowing the fixing ring to fit and fix the flipped blood vessel wall. The same operation is performed for the other end to be anastomosed. After completing the flipping and fixing of the flipping rings of the two sets of blood vessel flipping docking components at the blood vessel ends, the two blood vessel segments are anastomosed. By directly bringing the two blood vessels into contact, the opposing surfaces of the two sets of blood vessel flipping and docking components will fit tightly together due to the magnetic attraction between them, thus achieving vascular anastomosis.

[0014] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of two sets of blood vessel flipping and docking components according to an embodiment of the magnetic blood vessel anastomosis assembly of the present invention is shown;

[0017] Figure 2 It shows Figure 1 A schematic diagram of a set of vascular flipping and docking components of a magnetic vascular anastomosis assembly;

[0018] Figure 3 It shows Figure 2 A cross-sectional view of the blood vessel flipping docking component;

[0019] Figure 4 It shows Figure 2 A schematic diagram of the exploded structure of the blood vessel flipping docking component;

[0020] Figure 5 It shows Figure 2 A schematic diagram of the structure in which the blood vessel flipping docking component and the auxiliary positioning tool are used together;

[0021] Figure 6 It shows Figure 5 A schematic diagram of the main view structure of the auxiliary positioning tool;

[0022] Figure 7 It shows Figure 5 A side view of the auxiliary positioning tool;

[0023] Figure 8 It shows Figure 1 A schematic diagram of the installation structure of the magnetic components of the two sets of blood vessel flipping docking parts. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Figure 1 , Figure 2 , Figure 3 and Figure 4The present invention provides a magnetic vascular anastomosis assembly, comprising two sets of vascular flipping and docking components. Each set of vascular flipping and docking components includes a flipping ring 200 and a fixing ring 100. The flipping ring 200 includes a flipping ring body and a flipping support portion 201. The flipping support portion 201 is disposed in the middle of the flipping ring body and protrudes relative to the flipping ring body. The flipping ring 200 also includes a flipping inner hole 202 penetrating the flipping ring body and the flipping support portion 201. The flipping ring 200 also includes a first magnetic component 205 disposed on the flipping ring body. The fixing ring 100 includes a fixing ring body, on which a fixing inner hole 102 is provided. The inner diameter of the fixing inner hole 102 is larger than the outer diameter of the flip support part 201. The fixing inner hole 102 is used to fit on the outside of the flip support part 201. The depth of the fixing inner hole 102 is less than or equal to the height of the flip support part 201. The fixing ring 100 also includes a second magnetic component 105 disposed on the fixing ring body. The second magnetic component 105 is connected to the first magnetic component 205. The two sets of blood vessel flip docking components are connected through the corresponding second magnetic component 105.

[0029] In use, the blood vessel at one end requiring anastomosis is first flipped and fixed. Using a flipping ring 200, the blood vessel is passed through the flipping inner hole 202, with the vessel end on the same side as the flipping support 201, and the protruding length of the vessel end approximately equal to the height of the flipping support 201. The blood vessel is flipped, using the flipping support 201 as a support component, and the flipped blood vessel adheres to the outside of the flipping support 201. Then, a fixing ring 100 is used, inserted from the direction of the fixing ring flipping support 201, with the fixing contact surface 106 facing the flipping contact surface 206, and the fixing ring flipping support 201, which encloses the flipped blood vessel, passes through the fixing inner hole 102. Since the second magnetic component 105 is connected to the first magnetic component 205, the fixing ring 100 and the flipping ring 200 can be connected together, thereby fixing the flipped blood vessel between the fixing inner hole 102 and the flipping support 201. The inner diameter of the fixing inner hole 102 is larger than the outer diameter of the flipping support 201, allowing the fixing ring 100 to fit into 201 and fix the flipped blood vessel wall. The same operation is performed on the other end to be anastomosed. After the flipping rings 200 of the two sets of blood vessel flipping docking components are flipped and fixed at the ends of the blood vessels, the two blood vessel segments are anastomosed. The two ends of the blood vessels are directly brought into contact. Due to the magnetic attraction of the two sets of blood vessel flipping docking components, the opposing surfaces of the two sets of blood vessel flipping docking components will fit tightly together, thereby achieving blood vessel anastomosis.

[0030] Optionally, in the technical solution of this embodiment, a flipping bonding surface 206 is formed on the flipping ring body, and a fixing bonding surface 106 is formed on the fixing ring body, and the flipping bonding surface 206 and the fixing bonding surface 106 are bonded together.

[0031] Optionally, the height of the flipping ring body and the flipping support 201 are equal, both being 2mm. The flipping support 201 is used to flip the blood vessel and, after the blood vessel is flipped, to fix it to the fixing ring.

[0032] In a preferred embodiment, the outer diameters of the flip ring body and the fixed ring body are the same. This ensures that the external dimensions of the product are consistent, which is more beneficial for use during surgery.

[0033] Preferably, the main structure of the flip ring 200 and the fixed ring 100 can be 3D printed from polycarbonate (PC) material. Using PC as the main structure of the flip ring 200 and the fixed ring 100 reduces the overall density of the magnetic anastomosis device compared to an all-metal structure. PC has good biocompatibility and does not cause significant tissue reactions, inflammatory reactions, or rejection reactions when in contact with human tissue; secondly, PC has high strength and can withstand high tension and pressure; PC also has good corrosion resistance and can exist in the human body for a long time; moreover, PC has good plasticity, which makes it possible to construct this magnetic vascular anastomosis component through 3D printing.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the flip ring body has a first mounting hole 204, and a first magnetic component 205 is installed in the first mounting hole 204; the fixed ring body has a second mounting hole 104, and a second magnetic component 105 is installed in the second mounting hole 104. Preferably, there are multiple first mounting holes 204 and first magnetic components 205, and multiple second mounting holes 104 and second magnetic components 105, with each first mounting hole 204 corresponding to a second mounting hole 104. Optionally, in this embodiment, the flip ring body has six first mounting holes 204, and the fixed ring body has six second mounting holes 104. Optionally, the first mounting holes 204 and second mounting holes 104 can be cylindrical slots. Optionally, in this embodiment, the first magnetic component 205 and the second magnetic component 105 are N54 neodymium iron boron magnets. Preferably, the cylindrical slots are arranged in a manner where one is set every 60°, thereby achieving a more stable connection effect.

[0035] To ensure successful docking of the two sets of blood vessel flipping and docking components, the magnetic poles of the first magnetic component 205 and the second magnetic component 105 can be configured as follows: Figure 8 As shown, it can also be with Figure 8 The magnetic poles shown are arranged in the opposite way.

[0036] Optionally, the diameter of the cylindrical slot is 1mm, which is to match the size of the N54 neodymium iron boron magnet with the size of the cylindrical slot, i.e., the diameter is 1mm and the height is 2mm.

[0037] like Figure 2 As shown, in this embodiment, the flip ring body has a flip ring positioning groove, and the fixing ring body has a fixing ring positioning groove corresponding to the flip ring positioning groove. The flip ring positioning groove and the fixing ring positioning groove can be used to adjust the angle of the fixing ring 100 and the flip ring 200 when fixing a single-end blood vessel, preventing axial torsion between them. Optionally, the flip ring positioning groove and the fixing ring positioning groove are trapezoidal grooves, with the extension direction of the trapezoidal groove parallel to the axis of the fixing ring 100 and the flip ring 200. Optionally, the arc of the trapezoidal groove is 10° and the depth is 1.25mm, facilitating the user to determine whether the fixing ring 100 and the flip ring 200, or both fixing rings 100, are rotating around the axial direction, and to adjust their alignment.

[0038] In the technical solution of this embodiment, such as Figure 5 As shown, the magnetic suction vascular anastomosis assembly also includes an auxiliary positioning tool 300. The auxiliary positioning tool 300 includes a positioning straight segment 301, which is used to cooperate with the positioning grooves of the flip ring and the fixing ring of the two sets of vascular flipping and docking components to position the two sets of vascular flipping and docking components. In use, the auxiliary positioning tool 300 can limit the position of the two sets of vascular flipping and docking components when fixing the ends of the blood vessels, and ensure that the two sets of vascular flipping and docking components are prevented from rotating as much as possible during docking. In addition, the auxiliary positioning tool 300 can ensure that the two rings are parallel when initially installing the flip ring 200 and helps adjust the angle of the fixing ring 100.

[0039] Optional, such as Figure 6 and 7 As shown, the positioning tool 300 also includes a handle 302, and the positioning straight segment 301 is mounted on the handle 302 via an intermediate connecting segment 303. As a preferred embodiment, the positioning straight segment 301 and the intermediate connecting segment 303 are made of corrosion-resistant metal wire, forming a near-triangular shape, with one side opposite the handle bent downwards at 90°, so that a portion of the plane of the positioning straight segment 301 after bending is perpendicular to the plane enclosed by the handle 302 and the intermediate connecting segment 303. During use, the thickness of the positioning straight segment 301 should be such that it fits precisely into the positioning groove of the flip ring and the positioning groove of the fixing ring, ensuring that the fixing rings of the two anastomosing ends of the blood vessels are parallel to each other from the outset, preventing relative misalignment between the fixing ring 100 and the flip ring 200.

[0040] Specifically, the magnetic suction blood vessel anastomosis component of the present invention is used as follows:

[0041] First, the blood vessel at one end requiring anastomosis is flipped and fixed. Using the flipping ring 200, the blood vessel is passed through the flipping inner hole 202, with the vessel end on the same side as the flipping support 201, and the protruding length of the vessel end approximately equal to the height of the flipping support 201. The blood vessel is flipped, using the flipping support 201 as a supporting component, and the flipped blood vessel is attached to the outside of the flipping support 201. Throughout the above process, the metal wire 401 of the auxiliary positioning tool 300 is simultaneously placed in the positioning groove of the flipping ring and the positioning groove of the fixing ring, maintaining the relative angle of the flipping rings 200 of the two sets of blood vessel flipping docking components consistent.

[0042] Next, using the fixation ring 100, insert it from the direction of the fixation ring flipping support portion 201, with the fixing contact surface 106 facing the flipping contact surface 206, and insert the fixation ring flipping support portion 201, which encloses the flipped blood vessel, through the fixation inner hole 102. Note that during insertion, try to align the fixation ring positioning groove 103 and the flipping ring positioning groove 203. Due to the presence of the 12 N54 neodymium iron boron magnets already fixed in the fixation ring 100 and the flipping ring 200, the fixing contact surface 106 and the flipping contact surface 206 will fit tightly together due to magnetic attraction, thereby fixing the flipped blood vessel between the fixation inner hole 102 and the flipping support portion 201. At this time, use surgical tools and auxiliary positioning tools 300 to adjust the fixation ring positioning groove 103 so that it is completely aligned with the flipping ring positioning groove 203.

[0043] Perform the exact same operation on the other end to be matched.

[0044] After the flipping rings 200 of the two sets of vascular flipping and docking components are flipped and fixed at the ends of the blood vessels, the two blood vessel segments are anastomosed. The positioning tool 300 is removed. Since each of the fixing rings on both sides has six N54 neodymium iron boron magnets, the two ends of the blood vessels are directly brought into contact. Due to the magnetic attraction, the opposing surfaces of the two sets of vascular flipping and docking components will fit tightly together. The positioning grooves 103 of the two fixing rings are adjusted to align them, thereby achieving vascular anastomosis, thus completing the practical process of this invention.

[0045] As can be seen from the above, the advantages of the magnetic suction vascular anastomosis component of the present invention are:

[0046] The use of magnetic anastomosis avoids the vascular damage problems caused by traditional suture anastomosis and eliminates damage caused by loose vascular closure or broken sutures. Moreover, this anastomosis method makes the vascular anastomosis process easier to operate, takes less time, and requires less skill from the surgeon, which is conducive to its wider application.

[0047] It can effectively reduce axial torsional misalignment when two blood vessels are coupled. The use of positioning tool 300 ensures the initial positioning of the two ends of the blood vessel. The N54 neodymium iron boron magnetic columns with equal angle distribution help prevent the stapler from tortuously misaligning around the axis during the anastomosis process.

[0048] The structure of the flipping ring 200 and the fixing ring 100 is designed to facilitate flipping the blood vessel in the small outer diameter portion and fixing it on the fixing ring. This ensures that the blood vessel wall is not excessively stretched and to a certain extent prevents damage to the blood vessel wall.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A magnetic suction vascular anastomosis assembly, characterized in that, It includes two sets of blood vessel flipping and docking components, each set of blood vessel flipping and docking components includes: A flip ring (200) includes a flip ring body and a flip support part (201). The flip support part (201) is disposed in the middle of the flip ring body and protrudes relative to the flip ring body. The flip ring (200) also includes a flip inner hole (202) that penetrates the flip ring body and the flip support part (201). The flip ring (200) also includes a first magnetic component (205) disposed on the flip ring body. A fixing ring (100) includes a fixing ring body, on which a fixing inner hole (102) is provided. The inner diameter of the fixing inner hole (102) is larger than the outer diameter of the flip support part (201). The fixing inner hole (102) is used to fit on the outside of the flip support part (201). The depth of the fixing inner hole (102) is less than or equal to the height of the flip support part (201). The fixing ring (100) also includes a second magnetic component (105) disposed on the fixing ring body. The second magnetic component (105) is connected to the first magnetic component (205). The two sets of blood vessel flipping docking components are connected by the corresponding second magnetic component (105); The flip ring body is provided with a first mounting hole (204), and the first magnetic component (205) is installed in the first mounting hole (204); The fixing ring body is provided with a second mounting hole (104), and the second magnetic component (105) is installed in the second mounting hole (104); There are multiple first mounting holes (204) and first magnetic components (205), and there are also multiple second mounting holes (104) and second magnetic components (105). The first mounting holes (204) and the second mounting holes (104) correspond one-to-one.

2. The magnetic suction vascular anastomosis assembly according to claim 1, characterized in that, The flip ring body has a flip-fitting surface (206) and the fixing ring body has a fixing surface (106), and the flip-fitting surface (206) is fitted with the fixing surface (106).

3. The magnetic suction vascular anastomosis assembly according to claim 2, characterized in that, The outer diameters of the flip ring body and the fixed ring body are the same.

4. The magnetic suction vascular anastomosis assembly according to claim 1, characterized in that, The flip ring body has a flip ring positioning groove, and the fixed ring body has a fixed ring positioning groove corresponding to the flip ring positioning groove.

5. The magnetic suction vascular anastomosis assembly according to claim 1, characterized in that, The magnetic vascular anastomosis assembly also includes an auxiliary positioning tool (300), which includes a positioning straight segment. The positioning straight segment is used to cooperate with the flip ring positioning groove and the fixing ring positioning groove of the two sets of vascular flipping docking components to achieve positioning of the two sets of vascular flipping docking components.

6. The magnetic vascular anastomosis assembly according to claim 5, characterized in that, The positioning tool (300) also includes a handle, and the positioning straight segment is mounted to the handle via an intermediate connecting segment.

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