Device for suturing a blood vessel and method of use thereof

Abstract

The embodiments of the present disclosure provide a device for suturing blood vessels and a method for using the same. The device includes a support configured to be inserted into two blood vessels to be sutured and to support the blood vessels from the inside of the blood vessels, the support having a suture arranged thereon; and a suture passer for passing the suture arranged on the support inserted into the blood vessels through the blood vessel wall of the blood vessels so as to suture the two blood vessels. The device can provide stable support for the blood vessels during suturing to assist the suturing operation to be performed more accurately, and the use of the device can simplify the suturing steps and reduce the space required for the suturing operation, thereby improving the efficiency and safety of suturing.

Description

Technical Field

[0001] This disclosure relates to the field of medical devices, and more particularly to an apparatus for suturing blood vessels and a method of using the same. Background Technology

[0002] Vascular suturing plays a crucial role in vascular surgery, primarily used to repair or reconstruct blood vessels damaged by disease, injury, or other medical causes. This technique demands extremely high precision and meticulous surgical skills from the surgeon to ensure surgical success and patient safety.

[0003] Tiny blood vessels, especially those located deep within the patient's body or in areas with complex anatomy, present increased difficulty and complexity due to the often very limited surgical space available for suturing. Furthermore, the extremely thin and fragile walls of tiny blood vessels make fixing and suturing them during surgery even more challenging.

[0004] While existing suturing techniques are generally satisfactory, they still have limitations when dealing with microvessels. For example, while laser ablation utilizes the high energy and precision of lasers to connect and seal blood vessels, it also carries some risks. Laser ablation may increase the risk of postoperative vascular occlusion, and improper laser energy control can lead to thermal damage to surrounding tissues. These factors can all negatively impact a patient's postoperative functional recovery.

[0005] To overcome these challenges and improve the quality and efficiency of vascular suturing, the field has been seeking the assistance of medical devices. These devices aim to provide a more stable and precise surgical environment, reducing uncertainties and potential complications during surgery. However, how to provide a medical device that can effectively assist in vascular suturing surgery remains a key focus of current research and development. Summary of the Invention

[0006] In view of this, the present disclosure aims to provide an apparatus for suturing blood vessels and a method of using the same. This apparatus can provide stable support for the blood vessel during suturing to assist in more precise suturing operations, and by using this apparatus, suturing steps can be simplified and the space required for suturing operations can be reduced, thereby improving suturing efficiency and safety.

[0007] The technical solution of this disclosure embodiment is implemented as follows:

[0008] On one hand, embodiments of this disclosure provide an apparatus for suturing blood vessels, the apparatus comprising:

[0009] A support member configured to be inserted into two blood vessels to be sutured and to support the blood vessels from the inside of the vessels, wherein sutures are arranged on the support member; and

[0010] A suture extractor for passing the sutures arranged on the support inserted into the blood vessel through the vessel wall of the blood vessel in order to suture the two blood vessels.

[0011] In some alternative examples, the suture retriever includes a hook for hooking the suture so that the suture passes through the blood vessel wall along with the hook.

[0012] In some alternative examples, the suture retriever includes a rod and a tip formed at the end of the rod, the tip being configured to pierce the blood vessel wall, wherein a hook is disposed on the rod and adjacent to the tip.

[0013] In some optional examples, the end of the hook is blunted.

[0014] In some alternative examples, the suture is at least partially bonded to the support using bio-adhesive.

[0015] In some alternative examples, the surface of the support is coated with an anticoagulant.

[0016] In some alternative examples, the support includes a cylindrical body portion on which the stitching is arranged.

[0017] In some alternative examples, the device includes multiple sutures, and the main body includes multiple sidewalls extending in its axial direction and spaced apart from each other in its circumferential direction, each suture being disposed between two adjacent sidewalls in the circumferential direction of the main body.

[0018] In some alternative examples, each suture extends in a zigzag pattern between two adjacent sidewalls in the circumferential direction of the main body.

[0019] In some optional examples, the support member further includes two guide portions disposed at two axial ends of the main body portion for guiding the support member into the blood vessel.

[0020] In some optional examples, each suture is connected at both ends to the two guides.

[0021] On the other hand, embodiments of this disclosure also provide a method for using the apparatus for suturing blood vessels according to the first aspect, the method comprising:

[0022] A support is inserted into the two blood vessels to be sutured, so that the support supports the blood vessels from the inside, wherein sutures are arranged on the support.

[0023] Using a suture extractor, the sutures arranged on the support inserted into the blood vessel are passed through the vessel wall to suture the two blood vessels.

[0024] This disclosure provides an apparatus for suturing blood vessels and a method of using the same. The apparatus includes a support member for simultaneously supporting two blood vessels to be sutured, wherein sutures are pre-arranged on the support member. The apparatus also includes a suture retriever. When using this apparatus to suture two blood vessels, the support member can be inserted into the blood vessel to be sutured to support it from the inside, thereby maintaining the openness and stability of the vessel lumen, preventing collapse or deformation of the vessel during suturing, and ensuring accurate alignment of the two vessel ends, improving the accuracy and consistency of the suture. Since the sutures are arranged on the support member, suturing can be achieved simply by using the suture retriever to pass the sutures through the vessel wall. This simplifies the suturing process, reduces the required operating space, and allows the sutured surface to protrude from the outer wall of the vessel, reducing the risk of vascular injury and complications, and accelerating the patient's postoperative recovery. Attached Figure Description

[0025] Figure 1 A schematic diagram of an apparatus for suturing blood vessels provided in an embodiment of this disclosure;

[0026] Figure 2 A schematic diagram of a portion of an apparatus for suturing blood vessels provided in an embodiment of this disclosure;

[0027] Figure 3 Another schematic diagram of an apparatus for suturing blood vessels provided in an embodiment of this disclosure;

[0028] Figure 4 Another schematic diagram of an apparatus for suturing blood vessels provided in an embodiment of this disclosure;

[0029] Figure 5 for Figure 1 A magnified view of a device used for suturing blood vessels;

[0030] Figure 6 A schematic diagram of a portion of an apparatus for suturing blood vessels, provided as another embodiment of this disclosure;

[0031] Figure 7 A schematic diagram of a portion of an apparatus for suturing blood vessels, provided as another embodiment of this disclosure;

[0032] Figure 8A flowchart illustrating a method of using the apparatus for suturing blood vessels provided in an embodiment of this disclosure. Detailed Implementation

[0033] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0034] Suturing two blood vessels together is a complex and delicate surgical procedure, typically performed in vascular grafting, transplantation, or reconstructive surgery. This procedure usually involves the following steps: First, the two segments of the blood vessel to be sutured are exposed using surgical instruments such as forceps and a scalpel, and the vessels are clamped with vascular clamps to prevent blood leakage. Next, a sharp scalpel is used to cut the ends of the two blood vessels to create smooth surfaces, ensuring precise alignment. Then, after aligning the ends of the two blood vessels to ensure their lumens are connected, interrupted or continuous suturing is performed using surgical needles and sutures.

[0035] Suturing tiny blood vessels demands higher standards in all aspects of the surgical procedure. Specifically, firstly, the diameter of tiny blood vessels may be only a few millimeters or even smaller; for example, the diameter of cerebral blood vessels may be only 0.5 to 2 millimeters. This makes aligning the vessels before suturing, maintaining their position during suturing, and precisely positioning the suture line on the vessel more challenging. Secondly, tiny blood vessels are often located in areas with complex anatomical structures, resulting in very limited operating space. For instance, important neural structures and other blood vessels may be located around cerebral blood vessels, requiring care to avoid damaging these structures during the procedure. Thirdly, due to the small inner diameter of tiny blood vessels, if the suture surface protrudes into the vessel after suturing, it can lead to blockage of the vessel lumen, posing a risk to the patient's postoperative recovery.

[0036] In view of the above, this disclosure aims to provide an apparatus for suturing blood vessels and a method of using the same. This apparatus can provide stable support for the blood vessel during suturing to assist in more precise suturing operations, and by using this apparatus, suturing steps can be simplified and the space required for suturing operations can be reduced, thereby improving suturing efficiency and safety.

[0037] See Figure 1 This disclosure provides an apparatus 1 for suturing blood vessels. The apparatus 1 may include a support member 2 and a suture extractor 3. The support member 2 is configured to be inserted into two blood vessels to be sutured and to support the blood vessels from the inside. Sutures 4 are arranged on the support member. The suture extractor 3 is used to pass the sutures arranged on the support member inserted into the blood vessels through the vessel wall of the blood vessels, so as to suture the two blood vessels.

[0038] like Figure 1As shown, the device 1 may include two parts used in conjunction, namely a support member 2 and a suture extractor 3. The support member 2 can be used to support the blood vessel and can carry the suture 4 for suturing the blood vessel. The suture extractor 3 can be used to pass the suture 4 carried on the support member 2 through the blood vessel wall in order to suture the blood vessel.

[0039] See Figures 1 to 3 The support member 2 can be inserted into the blood vessel through the opening of the vessel to be sutured. As mentioned above, to ensure precise alignment of the two blood vessels, the ends of the vessels are usually trimmed and flattened, which also facilitates the insertion of the support member 2. When the support member 2 is inserted into the blood vessel, it can contact the circumferential inner wall of a segment of the blood vessel to provide at least circumferential support to that segment, ensuring that the segment of the blood vessel supported by the support member 2 maintains a regular, open shape regardless of whether the blood vessel is subjected to external forces. The support member 2 can be inserted only partially into the blood vessel. In some embodiments of this disclosure, the support member 2 can at least support the area of ​​the blood vessel through which the suture will pass, ensuring that the area of ​​the blood vessel being sutured will not deform due to the tension of the suture during the suturing operation, thus providing a stable operating environment for the operator.

[0040] The support member 2 not only supports the blood vessel but also needs to support the suture 4. The suture 4 can be pre-supported on the support member 2 and can be inserted into the blood vessel along with the support member 2, or near the lumen of the blood vessel. The length of the suture 4 can be preset according to the size of the blood vessel to be sutured. To save space, the suture 4 can be repeatedly bent and arranged on the support member 2. In some embodiments of this disclosure, such as... Figure 1 As shown, the suture 4 can be repeatedly bent along the axial direction of the support 2, thereby forming multiple meandering segments on the support 2. Adjacent segments are spaced apart at a certain interval to facilitate the suture picker 3 in picking up the suture from the support 2 and performing the suturing operation. The suture 4 on the support 2 can be a continuous suture for situations requiring continuous suturing. Alternatively, a suture can be cut into multiple segments and arranged on the support 2 in a continuous or discontinuous manner for situations requiring multi-point suturing. In actual suturing operations, an appropriate number of sutures can be selected as needed and arranged in a reasonable layout on the support according to the predetermined suturing positions to facilitate the suturing operation. When using the suture picker 3 to pick up the suture through the two blood vessels to be sutured, it is only necessary to roughly align the two suture pick positions along the axial direction of the two blood vessels to be sutured to easily pick up the same suture from both blood vessels.

[0041] The following is combined with Figures 2 to 3 Describe the use of device 1.

[0042] After stopping the bleeding of the two blood vessels to be sutured and trimming the ends of the vessels, the support 2 is inserted into the blood vessel from the end of the vessel. For example... Figure 2 As shown, a portion of the support member 2 is inserted into the first blood vessel BP1, allowing the support member 2 to support the first blood vessel BP1 from within. With the first blood vessel BP1 supported by the support member 2, the suture 4 arranged on the support member 2 can be passed through the vessel wall of the first blood vessel BP1 using the suture extractor 3. (See Figure 1) Figure 3 .

[0043] Next, the other part of the support member 2 is inserted into the second blood vessel BP2, so that the support member 2 can support the second blood vessel BP2 from inside. With the second blood vessel BP2 supported by the support member 2, the suture 4 arranged on the support member 2 can be passed through the vessel wall of the second blood vessel BP2 using the suture extractor 3, thereby achieving... Figure 4 The state shown in the image.

[0044] See Figure 3 and Figure 4 Since the suture 4 and the support 2 are both located inside the blood vessel, it is necessary to use the suture extractor 3 to make the suture 4 penetrate the blood vessel wall in order to achieve the purpose of suturing.

[0045] In some embodiments of this disclosure, such as Figure 3 As shown, the suture retriever 3 can be in the form of a needle. However, the specific implementation of the suture retriever 3 is not limited to this. In other embodiments not shown, the suture retriever 3 can also be other tools capable of passing through the blood vessel wall and grasping the suture, such as forceps. The suture retriever 3 can use clamping, hooking, or other methods to pass a portion of the suture 4 through the blood vessel wall and bring it to the outside of the blood vessel. In fact, this operation also constitutes a step in the suturing operation.

[0046] Unlike existing technologies where the operator manipulates the suture to pass through the vessel wall from the outside of the blood vessel into the inside and then back through the vessel wall to the outside, device 1 allows for suturing using pre-placed sutures within the blood vessel, proceeding from the inside to the outside. Therefore, device 1 not only saves space during suturing but also simplifies the process. Furthermore, by performing suturing from the inside to the outside, device 1 ensures the suture surface protrudes from the outer wall of the blood vessel, rather than from the inner wall, thus avoiding the risk of blockage and ensuring unobstructed blood flow.

[0047] exist Figure 4In the configuration shown, a portion of the support 2 is still exposed outside the blood vessel. As the suturing process proceeds, the two blood vessels can be brought closer together and their ends kept abutting under the pull of the suture. Supported by the support 2, the two blood vessels can be precisely aligned during suturing. Even if the suture pulls the two blood vessels closer together, they can remain aligned under the guidance of the support 2, thus reducing the risk of post-suture bleeding and promoting natural healing of the blood vessels.

[0048] Before the suturing operation is completed, the suture can be separated from the support 2, and the support 2 can be removed from the blood vessel through the unsutured opening. Then, the subsequent suturing operation can be continued until the two blood vessels are completely closed and connected. In other words, the support 2 is not permanently implanted inside the blood vessel, and therefore will not have an adverse effect on the recovery of the blood vessel.

[0049] This disclosure provides an apparatus 1 for suturing blood vessels. The apparatus 1 includes a support member 2 for simultaneously supporting two blood vessels to be sutured, wherein sutures 4 are pre-arranged on the support member 2. The apparatus also includes a suture retriever 3. When using the apparatus 1 to suture two blood vessels, the support member 2 can be inserted into the blood vessel to be sutured to support it from the inside, thereby maintaining the openness and stability of the blood vessel lumen, preventing collapse or deformation of the blood vessel during suturing, and ensuring accurate alignment of the two blood vessel ends, improving the accuracy and consistency of the suture. Since the sutures are arranged on the support member, the sutures 4 on the support member 2 only need to be passed through the blood vessel wall using the suture retriever 3 to achieve suturing. This not only simplifies the suturing process and reduces the required operating space, but also facilitates the protrusion of the sutured surface on the outer wall of the blood vessel, reducing the risk of vascular injury and complications, and accelerating the patient's postoperative recovery.

[0050] In some embodiments of this disclosure, see Figure 5 The suture retriever 3 includes a hook 31. The hook 31 can be used to hook the suture 4 so that the suture 4 passes through the blood vessel wall along with the hook 31.

[0051] like Figure 5 As shown, a hook 31 can be formed on the suture taker 3 by removing a portion of the material. The opening of the hook 31 can be approximately U-shaped and located near one end of the suture taker 3. The opening of the hook 31 is configured such that when the end of the suture taker 3 with the hook 31 moves toward the suture 4 arranged on the support member 2, the hook 31 will not substantially hook the suture 4; however, when the hook 31 has contacted the suture 4 arranged on the support member 2 and moves the suture taker 3 away from the support member 2, the suture entering the opening of the hook 31 can be hooked by the hook 31 and move with the suture taker 3.

[0052] The hook 31 allows for effective hooking and movement of the suture without pulling it into unintended positions, ensuring precision and reliability of the procedure. Furthermore, the design of the hook 31 reduces the operating space required during surgery, which is particularly important for suturing small blood vessels in anatomically complex and confined areas, minimizing interference and damage to surrounding tissues.

[0053] The suture retriever 3 can penetrate the vessel wall to enter the vessel and retrieve the sutures arranged on the support 2. For this purpose, a through-hole can be pre-formed in the vessel wall for the suture retriever 3 to pass through. In some embodiments of this disclosure, the suture retriever 3 itself has the ability to penetrate the entire vessel wall. Specifically, see... Figure 5 The suture extractor 3 may include a rod portion 32 and a tip 33 formed at the end of the rod portion 32. The tip 33 is configured to pierce the blood vessel wall, wherein a hook portion 31 is disposed on the rod portion 32 and adjacent to the tip 33.

[0054] like Figure 5 As shown, the suture-retrieving part of the suture retriever 3 can be formed in the shape of a rod, namely the rod portion 32. When the suture retriever 3 is moved toward the blood vessel to be sutured, the tip of the tip 33 located at the end of the rod portion 32 can first contact the blood vessel wall. By applying force along the axial direction of the rod portion 32, the tip 33 can be encouraged to pierce the blood vessel wall. Guided by the tip 33, the hook portion 31, which is provided adjacent to the tip 33, can enter the blood vessel through the hole formed by the tip 33 in the blood vessel wall to perform the suture retrieval operation.

[0055] In some embodiments of this disclosure, the tip 33 may be formed in a conical shape, and the apex of the cone forms the end of the rod 32. Of course, the tip 33 may also be formed in other shapes, such as a pyramidal shape, a needle shape, etc., and this disclosure does not limit it in this way.

[0056] By incorporating a tip 33 into the suture retriever, it can perform both suture puncture and suture retrieval functions, and these operations can be completed in one step, improving suturing efficiency. The tip 33 also allows for precise puncture of the vessel wall, reducing damage to surrounding tissues. The tip's guidance of the hook also ensures the suture passes through the vessel wall at the predetermined location, further improving the success rate and stability of the suturing procedure.

[0057] To prevent unintentional damage to blood vessels or surrounding tissues by the hook during suture retrieval, in some embodiments of this disclosure, the tip of the hook 31 is blunted. That is, the sharp portion of the hook 31 has been sharpened or rounded. This blunting process makes the tip of the hook 31 smoother and more rounded, preventing it from scratching or puncturing the blood vessel wall and surrounding tissues during suture retrieval, thereby reducing the risk of injury during the procedure. This design not only improves the safety of the surgery but also ensures the precision and effectiveness of the suturing operation.

[0058] In other embodiments of this disclosure, see Figure 6 The end of the hook 31 can be spherical. This significantly reduces the contact friction between the hook 31 and the suture, thereby reducing the risk of wear on the suture 4 during suture retrieval. In addition, the spherical end allows the hook 31 to glide more smoothly over the suture and blood vessel wall, avoiding potential damage to the blood vessel and suture from the sharp end, helping to maintain the integrity of the suture and blood vessel, and improving the safety of the suturing operation.

[0059] As explained above, the sutures 4 can be pre-arranged on the support 2. In some embodiments of this disclosure, in order to stably hold the sutures at predetermined positions on the support 2, the sutures 4 can be at least partially bonded to the support 2. This allows the sutures 4 to remain fixed to the support 2 in a predetermined arrangement. It should be noted that this bonding is only used to prevent the sutures from unintentionally shifting or falling off during surgical procedures, such as due to friction with blood vessels. When the sutures are picked up by the suture retriever, only a slight pulling force is required to separate the sutures from the support 2.

[0060] In some embodiments of this disclosure, the suture 4 can be bonded to the support 2 using bio-adhesive. The use of bio-adhesive not only ensures the suture remains stably in its intended position during surgery but also guarantees high biocompatibility with human tissue, reducing inflammatory and allergic reactions and improving postoperative recovery.

[0061] For vascular suturing surgery, the procedure itself can damage the vascular endothelium, and this damage, along with the local inflammatory response caused by surgical trauma, often increases the risk of thrombosis. Furthermore, changes in blood flow, such as slowed flow or the formation of vortices, may occur during the procedure, which can also promote thrombus formation.

[0062] To reduce the probability of the above-mentioned situation occurring, according to some embodiments of this disclosure, an anticoagulant can be coated on the surface of the support 2, particularly its outer surface. When the support 2 is inserted into the blood vessel, once the support 2 comes into contact with the inner wall of the blood vessel, the adhesive effect of the inner wall allows at least a portion of the anticoagulant on the surface of the support 2 to remain inside the blood vessel. Based on this, even if the support 2 is removed from the blood vessel before the suturing operation is completed, the anticoagulant can be released inside the blood vessel. As the anticoagulant dissolves, it can prevent thrombosis, reduce the possibility of vascular blockage, and ensure unobstructed blood flow after surgery.

[0063] In some embodiments of this disclosure, see Figure 1 and Figure 7 The support member 2 may include a cylindrical main body 21, and the stitching lines 4 are arranged on the main body 21.

[0064] In the embodiment shown in the figure, the main body 21 is formed in a cylindrical shape, i.e., it has a circular cross-section. In other embodiments of this disclosure, the main body 21 may have a cross-section of other shapes, such as a triangle, a square, etc. The external shape of the cylindrical main body 21 allows it to support the blood vessel from within in the circumferential direction, which is more conducive to neat alignment of the blood vessel ends and ensures that the suture is operated in the intended position. The main body 21 is hollow and the sutures 4 are arranged on the main body 21. The hollow main body not only has a lighter weight but also facilitates the suture pick-up device 3 to pick up the suture from the support member 2.

[0065] Since the main body 21 of the support member 2 mainly contacts the inner wall of the blood vessel during the suturing process to provide support from inside the blood vessel, in some embodiments of this disclosure, an anticoagulant is coated on the outer peripheral surface of the main body 21 of the support member 2 to allow more anticoagulant to be effectively released into the blood vessel. The following is in conjunction with... Figure 7 The illustrated embodiment further describes the support 2 and the suture 4.

[0066] like Figure 7 As shown, the device 1 includes multiple sutures 4. The main body 21 includes multiple sidewalls 211 extending in its axial direction and spaced apart from each other in its circumferential direction, and each suture 4 is disposed between two adjacent sidewalls 211 in the circumferential direction of the main body 21.

[0067] See Figure 7The device 1 includes four sutures 4. The main body 21 includes four sidewalls 211 spaced apart in the circumferential direction. Each suture is disposed between two adjacent sidewalls, such that the sutures can be independent of each other. The hollow structure and the spaced sidewalls provide space for the suture-taking operation of the suture taker 2. For example, in some embodiments of this disclosure, see [reference needed]. Figure 3 The suture retriever can enter the interior of the support member 2 through the spacing of the suture 4 in the area between adjacent sidewalls 211 of the main body 21 of the support member 2, and exit the support member 2 together after catching the suture. This improves the efficiency and success rate of suture retrieval.

[0068] When suturing blood vessels using the "four-point" suture method, the use of four sutures evenly distributed along the circumferential direction of the support 2 ensures that the blood vessel is subjected to uniform force in the circumferential direction, thus providing a stable and firm suture effect. This design not only guarantees the symmetry and uniformity of the suture points but also effectively avoids mutual interference between sutures, improving the efficiency and precision of the suturing operation, reducing the risk of postoperative complications, and accelerating the healing process.

[0069] It is understood that the device 1 may also include 6, 8, or more or fewer sutures depending on the application scenario, and this disclosure does not limit this.

[0070] In some embodiments of this disclosure, each suture 4 extends in a zigzag pattern between two adjacent sidewalls 211 in the circumferential direction of the main body 21. This zigzag arrangement of the sutures not only provides space for easy suture removal but also increases the contact area between the suture 4 and the sidewall 211. In conjunction with the above, bio-adhesive can be applied to the contact points between the suture 4 and the sidewall 211 to fix the suture 4 relative to the support 2. Since the suture 4 and the sidewall 211 are in point contact, only a small amount of bio-adhesive is needed to achieve the connection, and no excessive force is required to separate them. Therefore, it does not impose an additional burden on the suturing operation and does not affect suturing efficiency. The above arrangement of the sutures is merely exemplary; in other embodiments, the sutures may be arranged in other ways, and this disclosure does not limit this arrangement.

[0071] To facilitate the insertion of the support member 2 into the blood vessel, in some embodiments of this disclosure, the support member 2 may further include two guide portions disposed at the two axial ends of the main body 21, the guide portions being used to guide the support member 2 into the blood vessel.

[0072] See Figure 1 and Figure 7The support member may include two guide portions 22. When the support member 2 includes a cylindrical main body 21, the guide portions 22 are located at the two axial ends of the main body 21. In the example shown in the figure, each guide portion 22 may be hemispherical. This reduces the resistance of the support member 2 when inserted into the blood vessel and avoids damage to the inner wall of the blood vessel from sharp edges, thus reducing damage to the blood vessel during the procedure.

[0073] In some embodiments of this disclosure, each end of the suture 4 can be connected to two guide portions 22 respectively to ensure the connection between the suture 4 and the support 2. In other embodiments of this disclosure, the connection force between the suture 4 and the guide portion 22 can be greater than the force between the suture 4 and the main body 21, so that when the suture retriever performs the suture retrieval operation, the suture 4 can be easily separated from the main body 21, while the suture 4 remains connected to the guide portion 22. When a portion of the suture 4 is brought out of the blood vessel by the suture retriever through the blood vessel wall, other tools such as scissors can be used to separate the suture 4 from the guide portion 22 to facilitate subsequent suturing operations, such as knotting. The reliable connection between the suture 4 and the guide portion 22 can prevent the suture from accidentally separating from the suture retriever during the suture retrieval process and falling into the blood vessel, avoiding the risk of suture loss.

[0074] Some embodiments of this disclosure also provide a method for using the device 1 for suturing blood vessels as described above.

[0075] like Figure 8 As shown, the method includes:

[0076] S01. Insert the support member into the two blood vessels to be sutured, so that the support member supports the blood vessels from the inside of the blood vessels, wherein the support member is provided with sutures.

[0077] S02. Using a suture extractor, the sutures arranged on the support inserted into the blood vessel are passed through the blood vessel wall to suture the two blood vessels.

[0078] It should be noted that the technical solutions described in the embodiments of this disclosure can be combined arbitrarily without conflict.

[0079] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A device for suturing blood vessels, characterized in that, The device includes: A support member configured to be inserted into two blood vessels to be sutured and to support the blood vessels from the inside of the blood vessels, the support member comprising a cylindrical body portion including a plurality of sidewalls extending in its axial direction and spaced apart from each other in its circumferential direction. Multiple sutures, each extending in a zigzag pattern between two adjacent sidewalls along the circumferential direction of the main body, and at least partially bonded to the support member; and A suture extractor for passing the sutures arranged on the support inserted into the blood vessel through the vessel wall of the blood vessel in order to suture the two blood vessels; The suture retriever includes a hook for hooking the suture so that the suture passes through the blood vessel wall along with the hook. The suture retriever also includes a rod and a tip formed at the end of the rod, the tip being configured to pierce the blood vessel wall. The hook is located on the rod and adjacent to the tip. The support also includes two guide portions disposed at two axial ends of the main body, the guide portions being used to guide the support into the blood vessel, and both ends of each suture being connected to the two guide portions respectively, wherein the connection force between the suture and the guide portion is greater than the force between the suture and the main body.

2. The device for suturing blood vessels according to claim 1, characterized in that, The end of the hook is blunted.

3. The device for suturing blood vessels according to claim 1, characterized in that, The suture is at least partially bonded to the support member using bio-adhesive.

4. The device for suturing blood vessels according to claim 1, characterized in that, The surface of the support is coated with an anticoagulant.

Images