A combined instrument for vascular connection

Abstract

A combined instrument for vascular connection, comprising an incision component and a blood vessel to be installed. The incision component includes a cylinder body and a cutter. The cutter is arranged inside the cylinder body and is slidably connected to the cylinder body. The blood vessel to be installed is arranged inside the cylinder body and is sleeved outside the cutter. The distal end of the blood vessel to be installed is detachably installed on the cylinder body. The proximal end of the blood vessel to be installed is located at the proximal end of the cylinder body. A clamping member is provided at the proximal end of the blood vessel to be installed. The clamping member includes a first clamping wall and a second clamping wall which are elastically connected. In the initial state, the second clamping wall is clamped on the cutter, and the second clamping wall can cut into the main blood vessel along with the cutter. In the use state, the displacement of the cutter towards the inside of the main blood vessel can cause the second clamping wall to be disengaged from the cutter, and the second clamping wall disengaged from the cutter can rotate to be oppositely arranged with the first clamping wall. The oppositely arranged first clamping wall and second clamping wall can clamp the blood vessel wall of the main blood vessel. This combined instrument is simple to use, has a short operation time, and reduces the pain of the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a combined device for connecting blood vessels. Background Art

[0002] When local lesions occur in arterial or venous vessels, a common solution is to establish a bypass vessel to allow blood to bypass the lesion and restore blood supply. Taking the aortic bypass surgery as an example, to date, this surgery must be performed using a known scalpel to make a longitudinal incision on the side wall of the aorta clamped by the side wall clamp, and the bypass vessel end is anastomosed to the aortic incision with a surgical needle and sutures. This traditional surgical procedure is complicated, requires a high level of surgeon skills, and is very difficult to implement. Summary of the invention

[0003] The purpose of the present invention is to provide a combined instrument for blood vessel connection, which is simpler to use, has relatively low requirements on the operator's level, is less difficult to implement, and has a shorter operation time, which is more conducive to reducing the pain of the operator.

[0004] In order to solve the above technical problems, the present invention provides a combined instrument for blood vessel connection, comprising an incision assembly and a blood vessel to be installed, the incision assembly comprising a barrel and a cutter, the cutter being arranged in the barrel and slidably connected to the barrel, the blood vessel to be installed being also arranged in the barrel and sheathed on the cutter, the distal end of the blood vessel to be installed being detachably mounted on the barrel, the proximal end of the blood vessel to be installed being located at the proximal end of the barrel, the proximal end of the blood vessel to be installed being provided with a clamping component, the clamping component comprising a first clamping wall and a second clamping wall elastically connected; in an initial state, the second clamping wall is clamped on the cutter so that the second clamping wall can cut into the main blood vessel with the cutter, in a use state, the displacement of the cutter toward the inside of the main blood vessel can cause the second clamping wall to be separated from the cutter, the second clamping wall separated from the cutter can be elastically rotated to be arranged opposite to the first clamping wall, and the first clamping wall and the second clamping wall arranged opposite to each other can clamp the blood vessel wall of the main blood vessel.

[0005] When the above-mentioned combined instrument is in use, it is only necessary to control the tool to make an incision in the vascular wall of the main blood vessel, and control the tool to move relative to the cylinder toward the inside of the main blood vessel, so that the second clamping wall can be separated from the tool, and the second clamping wall can automatically rebound to be set opposite to the first clamping wall, thereby clamping the vascular wall of the main blood vessel to complete the docking of the blood vessel to be installed with the main blood vessel.

[0006] Compared with the background technology, the combined instrument provided by the present invention is simpler to use, has relatively low requirements on the operator's level, is less difficult to implement, and has a shorter operation time, which is more conducive to reducing the pain of the patient.

[0007] Optionally, the outer wall of the tool is provided with a shrinking groove extending in the axial direction, and in an initial state, the second clamping wall is clamped in the shrinking groove.

[0008] Optionally, the tool includes a tool head, and the shrinkage groove is arranged on the outer wall of the tool head.

[0009] Optionally, the second engaging wall includes a plurality of partition walls spaced apart along the circumferential direction, the number of the shrinking grooves is plural, and in an initial state, each of the partition walls is engaged in a corresponding shrinking groove in a one-to-one correspondence.

[0010] Optionally, the upper end of the shrinkage groove is also connected to a receiving groove that does not restrict the rotation of the second clamping wall, and is used to accommodate the second clamping wall and / or a portion connecting the first clamping wall and the second clamping wall.

[0011] Optionally, the clamping member is provided with a hemostatic component.

[0012] Optionally, the tool comprises a tool head, and in an initial state, the tool head has a portion protruding from the proximal end of the cylinder, and the proximal end of the tool head is provided with a needle and a blade.

[0013] Optionally, the proximal portion of the blood vessel to be installed is also provided with a transition connector, which includes a cylindrical portion, which is sleeved and fixed on the inner tube wall of the blood vessel to be installed, and the proximal portion of the cylindrical portion is provided with a wing plate portion radially outward, and the first clamping wall is connected to the wing plate portion.

[0014] Optionally, the wing portion is located radially outside the cylindrical portion and can abut against the proximal end portion of the cylinder in the axial direction.

[0015] Optionally, the blood vessel to be installed includes a blood vessel body, the distal end of the blood vessel body is provided with a first limiting member, the wall of the cylinder is connected to a first adjusting member with adjustable assembly depth, and the part of the first adjusting member extending into the cylinder can cooperate with the first limiting member to limit the position of the distal end of the blood vessel to be installed within the cylinder.

[0016] Optionally, the blood vessel to be installed includes a blood vessel body, and a distal end of the blood vessel body is provided with a docking component for connecting two blood vessels to be installed.

[0017] Optionally, the cutting tool further comprises a cutting rod, an outer wall of which is provided with a blood blocking member, and the blood blocking member is in sliding sealing contact with an inner wall of the blood vessel to be installed.

[0018] Optionally, the tool also includes a tool rod, the outer wall of the tool rod is provided with a second limiting member, the cylinder wall of the cylinder is connected to a second adjusting member with adjustable assembly depth, and the part of the second adjusting member extending into the cylinder can cooperate with the second limiting member to limit the position of the tool in the cylinder.

[0019] Optionally, the cylinder is provided with a stroke limiting component, the tool is provided with a second limiting component, the cooperation between the second adjusting component and the second limiting component is in a released state, and the stroke limiting component is used to cooperate with the second limiting component to limit the size of the tool cutting into the main blood vessel.

[0020] Optionally, a cylinder wall of the cylinder is provided with a stroke adjustment hole extending in the axial direction, and the stroke limiting member is installed in the stroke adjustment hole and can slide in the stroke adjustment hole.

[0021] Optionally, an elastic reset member is further included, and the elastic reset member interacts with the tool to reset the tool.

[0022] Optionally, the second limiting member is annular and is sleeved on the knife rod; it also includes a clamping member, which is installed on the knife rod. The clamping member and the elastic reset member respectively act on the axial ends of the second limiting member to locate the installation position of the second limiting member relative to the knife rod.

[0023] Optionally, protective caps are detachably mounted on both axial ends of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the combined device for blood vessel connection provided by the present invention in an initial state;

[0025] Figure 2 for Figure 1 A partial view from the right side viewing angle, used to show the stroke adjustment hole, the stroke limit member and the scale line;

[0026] Figure 3 A schematic diagram of the structure of the combined device for blood vessel connection provided by the present invention in use;

[0027] Figure 4 for Figure 1 A partial enlarged view of the connection between the middle cutter head and the clamping member;

[0028] Figure 5 is a schematic diagram of the structure of the tool;

[0029] Figure 6 for Figure 5 Bottom view of

[0030] Figure 7 is a schematic diagram of the structure of the blood vessel to be installed;

[0031] Figure 8 for Figure 7 A cross-sectional view of a specific implementation manner in the AA direction;

[0032] Fig. 9 for Figure 7 A cross-sectional view of another specific embodiment in the AA direction;

[0033] Fig.10 for Figure 7 A cross-sectional view of another specific implementation manner in the AA direction.

[0034] Figure 1-10 The reference numerals in the figures are described as follows:

[0035] 1 incision assembly, 11 cylinder, 111 stroke limiting component, 112 stroke adjusting hole, 113 scale line, 12 tool, 121 tool head, 121a shrinking groove, 121b accommodating groove, 121c puncture needle, 121d blade, 122 tool rod, 122a blood blocking component, 122b second limiting component, 122c threaded hole, 13 first adjusting component, 14 second adjusting component, 15 elastic reset component, 16 pressing component, 17 protection cap, 171 avoidance groove;

[0036] 2 the blood vessel to be installed, 21 the clamping member, 211 the first clamping wall, 212 the second clamping wall, 212a the dividing wall, 213 the connecting portion, 214 the clamping groove, 215 the hemostatic component, 22 the transition connecting piece, 221 the cylindrical portion, 222 the wing plate portion, 23 the first limiting member, 24 the blood vessel body. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The term “several” as used herein refers to an indefinite number of multiples, usually more than two; and when “several” is used to indicate the number of certain components, it does not indicate the quantitative relationship between these components.

[0039] The words "first", "second", etc. mentioned in this article are only for the convenience of describing two or more structures or components with the same or similar structures and / or functions, and do not imply any special limitation on the order and / or importance.

[0040] Please refer to Figure 1-Figure 10 , Figure 1 This is a schematic structural diagram of the combined device for blood vessel connection provided by the present invention in an initial state; Figure 2for Figure 1 A partial view from the right side viewing angle, used to show the stroke adjustment hole, the stroke limit member and the scale line; Figure 3 A schematic diagram of the structure of the combined device for blood vessel connection provided by the present invention in use; Figure 4 for Figure 1 A partial enlarged view of the connection between the middle cutter head and the clamping member; Figure 5 is a schematic diagram of the structure of the tool; Figure 6 for Figure 5 Bottom view of

[0041] Figure 7 is a schematic diagram of the structure of the blood vessel to be installed; Figure 8 for Figure 7 A cross-sectional view of a specific embodiment in the AA direction; Fig. 9 for Figure 7 A cross-sectional view of another specific embodiment in the AA direction;

[0042] Fig.10 for Figure 7 A cross-sectional view of another specific embodiment in the AA direction.

[0043] As described in the background technology section, when local lesions occur in arterial or venous vessels, a bypass vessel needs to be established to bypass the lesion site and restore blood supply. For the convenience of distinction and description, the arterial or venous vessel with local lesions can be referred to as a main vessel (not shown in the figure), and the main vessel can be a vessel at any part of the human body or other animal body, that is, the type of main vessel is not limited here.

[0044] The directional descriptions of "far" and "near" in this article are all based on the position relative to the main blood vessel. For any component, member or structure, the end (portion) that is relatively close to the main blood vessel when in use can be called the proximal end (portion), and the end (portion) that is relatively far from the main blood vessel when in use can be called the distal end (portion).

[0045] like Figure 1-Figure 4 As shown, the present invention provides a combined device for connecting blood vessels, specifically, the connection between a bypass vessel and a main vessel, such connection can be to overcome the local lesion blockage of the main vessel, or for other diseases. The combined device includes an incision assembly 1 and a blood vessel to be installed 2, the blood vessel to be installed 2 can be the entire bypass vessel, or only a part of the bypass vessel, and the details can be referred to the description below.

[0046] The incision assembly 11 is used to punch holes and incisions in the vessel wall of the main blood vessel to form an installation position for the bypass blood vessel, and the blood vessel 2 to be installed can be installed in the installation position. The blood vessel 2 to be installed is usually an artificial blood vessel. The structural shape of the blood vessel 2 to be installed is not limited here, and during specific implementation, those skilled in the art can determine it according to actual needs. For example, in the axial direction of the blood vessel body 24, the blood vessel body 24 can be an equal-area blood vessel, that is, a blood vessel with the same flow area, such as a circular tube of equal diameter, an elliptical tube of equal size, etc. At this time, the cross-section of the blood vessel body 24 perpendicular to the axial direction can be circular or elliptical; or, in the axial direction of the blood vessel body 24, the blood vessel body 24 can also be a variable-area blood vessel, that is, the flow area can change; or, the blood vessel body 24 can also be a complex structure including several blood vessels.

[0047] In detail, the incision assembly 1 includes a barrel 11 and a cutter 12, wherein the cutter 12 is disposed in the barrel 11 and is slidably connected to the barrel 11, and the blood vessel 2 to be installed is also disposed in the barrel 11 and is sheathed on the cutter 12; the distal end of the blood vessel 2 to be installed is detachably mounted on the barrel 11, the proximal end of the blood vessel 2 to be installed is located at the proximal end of the barrel 1, and a clamping member 21 is further provided at the proximal end of the blood vessel 2 to be installed, wherein the clamping member 21 includes a first clamping wall 211 and a second clamping wall 212 which are elastically connected, In the initial state, the second clamping wall 212 is clamped on the tool 12, so that the second clamping wall 212 can cut into the main blood vessel together with the tool 12. In the use state, the displacement of the tool 12 toward the inside of the main blood vessel can cause the second clamping wall 212 to separate from the tool 12. The second clamping wall 212 separated from the tool 12 can elastically flip to be arranged opposite to the first clamping wall 211. At this time, a clamping groove can be formed between the first clamping wall 211 and the second clamping wall 212 to clamp the vascular wall of the main blood vessel.

[0048] When the combined instrument provided by the present invention is in use, it is only necessary to control the cutter 12 to make an incision in the vascular wall of the main blood vessel, and control the cutter 12 to move relative to the cylinder 11 toward the inside of the main blood vessel, so that the second clamping wall 212 can be separated from the cutter 12, and the second clamping wall 212 can automatically rebound and flip to be arranged opposite to the first clamping wall 211, thereby clamping the vascular wall of the main blood vessel to complete the docking of the blood vessel 2 to be installed with the main blood vessel.

[0049] Compared with the background technology, the combined instrument provided by the present invention is simpler to use, has relatively low requirements on the operator's level, is less difficult to implement, has a shorter operation time, and has less surgical trauma. It can greatly simplify the surgical procedure and is more conducive to reducing the pain of the patient.

[0050] Specifically, Figure 1As shown, in the initial state, the proximal end of the tool 12 may have a portion protruding from the barrel 11, and at least a portion of the portion is the cutting head 121. When in use, the proximal end of the incision assembly 1 is directly controlled to be close to the vascular wall of the main blood vessel as a whole until the proximal end of the barrel 11 contacts the vascular wall of the main blood vessel. The cutting head 121 can form an incision on the vascular wall of the main blood vessel. For the sake of ease of description, the incision at this time can be called the initial incision.

[0051] The initial incision may be an incision that matches the clamping member 21, so that when the cutter 12 is further pushed toward the main blood vessel, the size of the incision will not increase; or the size of the initial incision may be smaller than the required size, in which case, when the cutter 12 is further pushed toward the main blood vessel, the size of the incision may be further expanded. Both of the above schemes may be adopted in specific implementation, which is specifically related to the structural form of the cutter head 121, the structural form of the proximal end of the cutter 12 protruding from the barrel 11, etc.

[0052] In the scheme of the accompanying drawings, Figure 1 and Figure 5 As shown, the cutter head 121 may include a constant-size segment and a tapered segment. The constant-size segment here refers to the portion whose shape and size of the cross section in the axial direction and perpendicular to the axial direction do not change; the tapered segment is closer to the main blood vessel than the constant-size segment, and a needle 121c may be provided at the vertex of the tapered segment. When making an incision, the needle 121c may first be inserted into the vessel wall of the main blood vessel to position the cutter 12. In the initial state, the constant-size segment (the lower end of the constant-size segment, i.e., the large-diameter end of the tapered segment) may be located outside the barrel 11, so that when the incision assembly 1 is pushed as a whole toward the main blood vessel for cutting, the constant-size segment may be cut into the incision of the main blood vessel; when the cutter 12 is further pushed to move along the barrel 11 toward the inside of the main blood vessel, the size of the incision will not expand, and the push of the cutter 12 may also be easier.

[0053] It should be noted that, in addition to the structure of the cutter head 121 shown in the drawings, the cutter head 121 may also adopt other structural forms as long as it can meet the relevant requirements such as the shape and size of the incision. For example, the cutter head 121 as a whole may be in a bullet shape.

[0054] You can also refer to Figure 8-Figure 10, the cross section of the cutting head 121 perpendicular to the axial direction actually matches the cross section of the vascular body 24 of the blood vessel 2 to be installed: when the cross section of the vascular body 24 perpendicular to the axial direction is an ellipse, the cross section of the cutting head 121 perpendicular to the axial direction can also be a matching ellipse; and when the cross section of the vascular body 24 perpendicular to the axial direction is a circle, the cross section of the cutting head 121 perpendicular to the axial direction can also be a matching circle. It should be noted that the above two exemplary matching relationships are actually based on the situation that the cutting head 121 cuts into the vascular wall of the main blood vessel perpendicularly. When the cutting head 121 cuts into the vascular wall of the main blood vessel at an angle, even if the cross section of the cutting head 121 perpendicular to the axial direction is a circle, an elliptical incision can also be formed.

[0055] The cutting head 12 may be provided with a cutting blade 121d for cutting the vessel wall of the main blood vessel. The structural form and quantity of the cutting blade 121d are not limited herein. During specific implementation, those skilled in the art may set it according to actual needs.

[0056] In the embodiment of the accompanying drawings, Figure 4-Figure 6 As shown, the blade 121d can have a blade portion with an arc-shaped contour line to enhance the cutting force; the extension direction of the blade 121b can be roughly linear, and the arrangement direction of the blade can be roughly radial; the number of blades 121d can be multiple, and they are arranged at intervals along the circumferential direction; the projection of each blade 121d in the cross section perpendicular to the axial direction is the first projection, and the projection of the equal-sized segment in the cross section perpendicular to the axial direction is the second projection, and the first projection is within the range of the second projection, that is, each blade 121d does not protrude from the outer wall surface of the equal-sized segment to avoid over-cutting of the main blood vessel.

[0057] In combination with the foregoing content, it can be known that the tool 12 is provided with a clamping structure capable of clamping the second clamping wall 212. The clamping structure can be an independent component and can then be installed on the tool 12 through a conventional mechanical connection method, or it can also be a structure formed by the tool 12 itself. The specific form of this clamping structure can be varied as long as it can meet the requirements of use.

[0058] In the scheme of the accompanying drawings, Figure 3-Figure 5 As shown, the outer wall of the tool 12 can be provided with a shrinking groove 121a extending along the axial direction, where the shrinking groove 121a refers to a structure with a small groove size and a large groove size, such as a dovetail groove, a T-shaped groove, an L-shaped groove, etc.; in the initial state, the second clamping wall 212 can be clamped in the shrinking groove 121a, and the groove wall of the shrinking groove 121a can prevent the second clamping wall 212 from automatically flipping over.

[0059] In the above scheme, since the shrinking groove 121a is set on the outer wall of the tool 12, the overall shape of the shrinking groove 121a is actually related to the shape of the outer wall of the tool 12. If the portion of the tool 12 where the shrinking groove 121a is set is the aforementioned equal-sized segment, the extension direction of the shrinking groove 121a is roughly parallel to the central axis of the tool 12. In the initial state, the second clamping wall 212 and the first clamping wall 211 can be at an angle of approximately 90 degrees (such as Figure 4 As shown); if the portion of the tool 12 where the shrinkage groove 121a is set is the aforementioned tapered section, the extension direction of the shrinkage groove 121a can be at an angle greater than 90 degrees with the central axis of the tool 12; or, the shrinkage groove 121a can also be partially located in the equal-sized section of the tool 12 or partially located in the tapered section of the tool 12.

[0060] Preferably, the embodiment of the present invention can set the entirety of the constricted groove 121a in equal-sized segments. In this way, when the cutter 12 is pushed into the main blood vessel, the clamping structure between the second clamping wall 212 and the constricted groove 121a will not form damping, and the advancement of the cutter 12 can be smoother.

[0061] Furthermore, the upper end of the shrinking groove 121a is also connected to a receiving groove 121b that does not restrict the rotation of the second clamping wall 212, and is used to accommodate a portion (hereinafter referred to as a connecting portion 213) connecting the first clamping wall 211 and the second clamping wall 212 and / or the second clamping wall 212. In this way, the other parts of the clamping member 21 except the first clamping wall 211 can be restricted in the cutter 12, which can reduce the influence of the clamping member 21 on the cutting of the main blood vessel by the cutter 12, so as to ensure the shape of the incision on the blood vessel wall of the main blood vessel.

[0062] Combination Figure 4 , Figure 5 The above-mentioned shrinkage groove 121a and the accommodating groove 121b are actually both arranged on the outer wall of the cutter head 121.

[0063] For example Figure 7 As shown, the clamping member 21 may further include a connecting portion 213 connecting the first clamping wall 211 and the second clamping wall 212; with this structure, when the second clamping wall 212 is separated from the tool 12, the cross section of the clamping member 21 along the axial direction may be roughly U-shaped with the opening facing outward. Of course, the connecting portion 213 may also not exist, that is, the second clamping wall 212 and the first clamping wall 211 may also be directly connected; with this structure, when the second clamping wall 212 is separated from the tool 12, the cross section of the clamping member 21 along the axial direction may be roughly V-shaped with the opening facing outward.

[0064] The material of the clamping member 21 may specifically be a memory alloy, or may also be other materials that can meet the use requirements.

[0065] Combination Figure 8-Figure 10 , the second clamping wall 212 may include a plurality of partition walls 212a arranged at intervals along the circumferential direction. In this way, the second clamping wall 212 can be relatively easily flipped; these partition walls 212a can be connected to each other or not. Correspondingly, the number of the shrinking grooves 121a can also be multiple, and in the initial state, each partition wall 212a can be clamped in the corresponding shrinking groove 121a one by one. The number of the partition walls 212a and the shrinking groove 121a is not limited here.

[0066] The structural form of each partition wall 212a is not limited here. During specific implementation, those skilled in the art can set it according to actual needs. The surface of each partition wall 212a can be passivated to reduce the cutting ability of each partition wall 212a, thereby largely avoiding the damage to the vascular wall of the main blood vessel caused by each partition wall 212a when contacting the vascular wall of the main blood vessel.

[0067] Different from the second clamping wall 212, the first clamping wall 211 can be annular, so that after the clamping is completed, the first clamping wall 211 can cover the incision of the main blood vessel. In fact, the first clamping wall 211 can also adopt a structure similar to the second clamping wall 212, which does not affect the connection between the clamping member 21 and the blood vessel wall of the main blood vessel.

[0068] Furthermore, the clamping member 21 may also be provided with a hemostatic component 215 to minimize bleeding. The hemostatic component 215 is a component used for hemostasis in the medical field, such as a medical hemostatic felt, etc., which may be attached to the side opposite to the first clamping wall 211 and the second clamping wall 212. In this way, after the blood vessel 2 to be installed is docked with the main blood vessel, the hemostatic felt may be located outside the main blood vessel and press the incision.

[0069] The blood vessel 2 to be installed may include a blood vessel body 24, and the aforementioned clamping component 21 is arranged at the proximal end of the blood vessel body 24. There are many options for specific installation methods, as long as the reliable connection between the clamping component 21 and the blood vessel body 24 can be guaranteed.

[0070] Combination Figure 7 The proximal portion of the blood vessel 2 to be installed may be provided with a transition connector 22, and the transition connector 22 may include a cylindrical portion 221, and the cylindrical portion 221 may be sleeved and fixed on the inner tube wall of the blood vessel 2 to be installed, and the specific fixing method may be interference fitting or bonding; the proximal portion of the cylindrical portion 221 may be provided with a wing plate portion 222 extending radially outward, and the first clamping wall 211 may be connected to the wing plate portion 222, and the connection method may be bonding, welding, etc., which is also related to the materials of the clamping component 21 and the transition connector 22.

[0071] Preferably, the wing plate portion 222 can also serve as the first limiting component between the proximal end of the vascular body 24 and the barrel 11, and is used to limit the relative position of the proximal end of the vascular body 24 and the barrel 11. Specifically, in the initial state, the wing plate portion 222 can abut against the proximal end of the barrel 11 along the axial direction, and then the proximal end of the vascular body 24 can be limited to a position substantially consistent with the proximal end of the barrel 11, and the first clamping wall 211 connected to the wing plate portion 222 can be flush with the proximal end of the barrel 11, or can also appropriately protrude from the proximal end of the barrel 11, so that when the operating barrel 11 is close to the main blood vessel, the first clamping wall 211 can contact the blood vessel wall of the main blood vessel. It should be noted that if the hemostatic component 215 is provided on the first clamping wall 211, it is actually the hemostatic component that contacts the blood vessel wall of the main blood vessel. At this time, it is only necessary to ensure that the hemostatic component 215 appropriately protrudes from the proximal end of the barrel 11 or is flush with the proximal end of the barrel 11.

[0072] The wing plate portion 222 can have various structural forms as long as the corresponding technical effects can be achieved. For example, the wing plate portion 222 can be a complete annular plate, or the wing plate portion 222 can include a plurality of sub-plates spaced apart along the circumferential direction, each of which can be connected to the cylindrical portion 221.

[0073] As mentioned above, the distal end of the blood vessel 2 to be installed is detachably installed in the barrel 11. In practical applications, before the clamping member 21 is clamped with the main blood vessel, the distal end of the blood vessel 2 to be installed and the barrel 11 can be in a connected state to maintain the installation state of the blood vessel 2 to be installed in the barrel 11. After the clamping member 21 is clamped with the main blood vessel, the connection state between the distal end of the blood vessel 2 to be installed and the barrel 11 can be released, and at this time, the cutter 12, the barrel 11 and the blood vessel 2 to be installed can be controlled to be separated.

[0074] There are many options for this detachable connection method, as long as it can meet the corresponding technical requirements.

[0075] In the scheme of the accompanying drawings, Figure 1 , Figure 7 As shown, the distal end of the blood vessel 2 to be installed can be provided with a first limiting member 23, and the wall of the barrel 11 is connected with a first adjusting member 13 with adjustable assembly depth; the assembly depth here refers to the insertion dimension along the radial direction of the barrel 11. The portion of the first adjusting member 13 extending into the barrel 11 can cooperate with the first limiting member 23 along the axial direction to limit the position of the distal end of the blood vessel 2 to be installed in the barrel 11, and when the limiting cooperation between the two needs to be released, it is only necessary to adjust the assembly depth of the first adjusting member 13.

[0076] In detail, the first adjusting member 13 can be a structural member such as a screw that is screwed to adjust the assembly depth, or the first adjusting member 13 can also be a structural member such as a spring pin that is inserted and pulled to adjust the assembly depth.

[0077] The establishment of a bypass vessel requires two connection points with the main vessel, but the combined device provided by the present invention can only complete the establishment of one connection point at a time. Thus, when establishing a bypass vessel, it is actually necessary to set two vessels 2 to be installed at both ends of the lesion site of the main vessel; then, the two vessels 2 to be installed can be docked to complete the establishment of the bypass vessel.

[0078] Therefore, it is also necessary to set a docking component on the blood vessel 2 to be installed. The docking component can be specifically set at the distal end of the blood vessel body 24.

[0079] To simplify the structure, the docking member and the aforementioned first limiting member 23 can be the same member, that is, the first limiting member 23 can cooperate with the first adjusting member 13 to limit the axial displacement of the blood vessel 2 to be installed relative to the cylinder 11, and can also be used for docking two blood vessels to be installed 2. Specifically, the first limiting member 23 can be a buckle, and the two blood vessels to be installed 2 can be connected by the buckle.

[0080] Furthermore, the cutter 12 may also include a cutter bar 122, and the outer wall of the cutter bar 122 may be provided with a blood blocking member (not shown in the figure), which may be in sliding sealing contact with the inner wall of the blood vessel to be installed to minimize bleeding. The specific structure, material, etc. of the blood blocking member are not limited, as long as they can meet the use requirements.

[0081] like Figure 1 , Figure 3 As shown, the outer wall of the knife bar 122 may be provided with a second limiting member 122b, and the cylinder wall of the cylinder 11 may be connected with a second adjusting member 14 with adjustable assembly depth, and the structure of the second adjusting member 14 may be similar to the first adjusting member 13 described above; similarly, the portion of the second adjusting member 14 extending into the cylinder 11 may cooperate with the second limiting member 122b to limit the position of the knife 12 in the cylinder 11. The installation position of the second limiting member 122b on the knife bar 122 is not limited here. In the embodiment of the accompanying drawings, as shown in FIG. Figure 1 , Figure 3 As shown, the second limiting member 122 b may be located at the distal end of the knife rod 122 .

[0082] With such a configuration, when the limiting cooperation between the second adjusting member 14 and the second limiting member 122b is not released, the tool 12 cannot be displaced relative to the cylinder body 11, the incision assembly 1 can be conveniently operated as a whole, and accidental activation of the tool 12 can be avoided; when the limiting cooperation between the second adjusting member 14 and the second limiting member 122b is released, the tool 12 can be displaced relative to the cylinder body 11 so that the tool 12 can be operated alone.

[0083] The second limiting member 122 b may be provided with a positioning hole extending in the radial direction, or the outer wall of the second limiting member 122 b may be provided with an annular groove for cooperating with the second adjusting member 14 to position the tool 12 .

[0084] For a human or other animal subject, the inner diameter of the main blood vessel is relatively small, and even for the aorta, its inner diameter is in the order of centimeters. Therefore, when operating the cutter 12 to make an incision on the vessel wall of the main blood vessel and pushing the cutter 12 further into the main blood vessel, it is necessary to avoid the cutter penetrating the vessel wall on the other side and causing additional damage to the main blood vessel.

[0085] In specific practice, the above situation can be controlled through the operator's fine operation. At this time, auxiliary judgment structures such as scale lines 113 can also be set on the barrel 11 to prompt the operator the displacement distance of the tool 12 relative to the barrel 11.

[0086] Alternatively, a stroke limiting member 111 may be provided in the barrel 11, and the cutter 12 may be provided with a second limiting member. When the cooperation between the second adjustment member 14 and the second limiting member 122b is released, the stroke limiting member 111 can cooperate with the second limiting member to limit the size of the cutter 12 entering the main blood vessel, thereby better preventing the cutter 12 from penetrating the main blood vessel. In order to simplify the structure, the second limiting member and the aforementioned second limiting member 122b may be the same member.

[0087] The travel limit member 111 can be an independent component, and then can be installed in the cylinder 11 by mechanical connection methods such as thread connection, welding, clamping, bonding, etc. This solution can be seen in Figure 2 and Figure 3 Furthermore, the installation position of the stroke limiting member 111 can be adjusted so as to adjust the advancement amount of the cutter 12 for main blood vessels with different inner diameters; in detail, a stroke adjustment hole 112 extending in the axial direction can be provided in the cylinder 11, and the aforementioned stroke limiting member 111 can slide in the stroke adjustment hole 112, and a scale line 113 can be provided on one side of the stroke adjustment hole 112 to assist in determining the installation position of the stroke limiting member 111.

[0088] Alternatively, the stroke limiting member 111 and the cylinder 11 may also be an integrated structure, for example, the stroke limiting member 111 may be a limiting boss formed by the inner wall of the cylinder 11 protruding radially inward. In this way, the advancement amount of the tool 12 may also be limited. In this embodiment, there may be more options for the structural form of the stroke limiting member 111; for example, it may be annular, or it may be a single or multiple circumferentially spaced protrusions provided on the inner wall of the cylinder 11.

[0089] Furthermore, an elastic reset member 15 may be included, which may interact with the cutter 12 to reset the cutter 12. In this way, after the connection between the blood vessel 2 to be installed and the main blood vessel is completed, under the action of the elastic reset member 15, the cutter 12 may automatically move in a direction away from the inside of the main blood vessel.

[0090] The type of the elastic reset member 15 is not limited here, and it can be a spring, an elastic block, a tension rope, or other elastic components in various forms, as long as the corresponding functions can be achieved. Taking a spring as an example, the elastic reset member 15 can be mounted on the knife rod 122 of the cutter 12, one end of which can interact with the second limiting member 122b, and the other end can interact with the inner wall of the cylinder 11 (the inner wall of the cylinder 11 can extend radially inward to form a supporting member of the spring). When the cutter 12 moves toward the inside of the main blood vessel relative to the cylinder 11, the elastic deformation accumulated by the elastic reset member 15 can increase. In this way, when the operator releases the operating force on the cutter 12, the elastic deformation accumulated by the elastic reset member 15 can be released to drive the cutter 12 to reset; the aforementioned elastic deformation can be a compression deformation or a tensile deformation, which is specifically related to the installation position of the elastic reset member 15.

[0091] The second limiting member 122b and the knife rod 122 may be an integrated structure.

[0092] Alternatively, the second limiting member 122b and the knife bar 122 may be separately provided and then assembled; the second limiting member 122b and the knife bar 122 may be installed in various ways as long as they can meet the use requirements. Figure 1 , Figure 3 As shown, the second limiting member 122b can be annular and can be externally mounted on the knife rod 122. It can also include a clamping member 16, which can be installed on the knife rod 122. The clamping member 16 and the elastic reset member 15 can respectively act on the axial ends of the second limiting member 122b, thereby positioning the installation position of the second limiting member 122b relative to the knife rod 122.

[0093] The pressing member 16 may be a screw-like component, including a head and a rod, the rod may be provided with external threads, and the knife bar 122 may be provided with a threaded hole 122c. The pressing member 16 may be screwed to the knife bar 122 through the rod, and the second limiting member 122b may be pressed through the head.

[0094] Both axial ends of the cylinder 11 are detachably mounted with protective caps 17, and the detachable connection method may be a threaded connection or a certain degree of interference fit, etc. When in use, the protective caps 17 at both ends of the cylinder 11 may be removed first. The protective caps 17 may be made of transparent material or non-transparent material.

[0095] Combination Figure 1 If the protective cap 17 extends to cover the second adjusting member 14 and the stroke limiting member 111, the second adjusting member 14 and the stroke limiting member 111 will interfere with the installation of the protective cap 17. In this case, an avoidance groove 171 may be provided on the protective cap 17 to avoid the second adjusting member 14 and the stroke limiting member 111.

[0096] The embodiment of the present invention does not limit the assembly process of the above-mentioned combined device. In actual assembly, the assembly can be performed in various orders as long as the final product can meet the requirements of use. The following embodiment of the present invention exemplarily provides an assembly step.

[0097] 1) The blood vessel 2 to be installed is installed in the barrel 11, and the wing plate portion 222 is axially abutted against the proximal end of the barrel 11, and then the blood vessel 2 to be installed is straightened, and the first adjustment member 13 cooperates with the first limiting member 23 to limit the position of the distal end of the blood vessel 2 to be installed;

[0098] 2) From bottom to top, the cutter 12 is sheathed inside the barrel 11 and the blood vessel 2 to be installed, and then the elastic reset member 15, the second limiting member 122b and the pressing member 16 are installed;

[0099] 3) Clamp the second clamping wall 212 of the clamping member 21 onto the tool 12;

[0100] 4) installing the second adjusting member 14 so that the second adjusting member 14 can cooperate with the cutter 12 to limit the position of the cutter 12 relative to the barrel 11;

[0101] 5) Protective caps 17 are respectively provided at the two axial ends of the cylinder 11 .

[0102] With respect to the combined apparatus involved in each of the above-mentioned embodiments, the following embodiments of the present invention may also briefly describe the operation steps thereof.

[0103] 1) Remove the protective cap 17 at the proximal end of the barrel 11, operate the barrel 11 to approach the vessel wall of the main blood vessel, and pierce the main blood vessel with the blade head 121 until the hemostatic component 215 of the clamping member 21 contacts the outer wall of the main blood vessel;

[0104] It should be noted that the direction in which the cutter 12 cuts into the main blood vessel can be vertical or oblique, and both solutions are feasible options.

[0105] 2) removing the protective cap 17 at the distal end of the barrel 11, releasing the axial limiting cooperation between the second adjusting member 14 and the second limiting member 122b, and pushing the cutter 12 toward the inside of the main blood vessel until the second clamping wall 212 and the cutter 12 are released from the clamping, and the second clamping wall 212 rotates to be arranged opposite to the first clamping wall 211, thereby clamping the vessel wall of the main blood vessel;

[0106] During this process, the stroke limiting member 111 is used to limit the advancement of the tool 12; the elastic deformation of the elastic reset member 15 increases, and when the operator's force operating the tool 12 is released, the elastic deformation of the elastic reset member 15 can be released to drive the tool 12 to gradually detach from the main blood vessel.

[0107] 3) Release the axial limiting cooperation between the first adjusting member 13 and the first limiting member 23, and pull out the barrel 11 and the cutter 12 synchronously and slowly. When the blood vessel 2 to be installed is exposed outside the barrel 11, clamp the blood vessel 2 to be installed with a vascular clamp to prevent blood from flowing out, and then completely pull out the barrel 11 and the cutter 12;

[0108] 4) Repeat steps 1)-3) to connect another blood vessel 2 to be installed at the other end of the lesion site of the main blood vessel;

[0109] 5) When the gas in the two blood vessels 2 to be installed is fully exhausted and the blood in the blood vessels 2 to be installed flows to the distal end of the corresponding blood vessels 2 to be installed, the first limiting member 23 is used to quickly connect the two blood vessels 2 to complete the establishment of the bypass blood vessel.

[0110] It should be pointed out that the combined instrument provided by the present invention can be used under open-chest conditions or for minimally invasive interventional surgery. In other words, the implementation scenario of the combined instrument provided by the present invention is not limited. In addition, the materials used for each component in the combined instrument provided by the present invention are all medical functional materials that are harmless to human tissue and blood, so as to avoid resistance between the material itself and the patient.

[0111] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A combined device for connecting blood vessels, It is characterized in that The invention comprises an incision assembly (1) and a blood vessel (2) to be installed, wherein the incision assembly (1) comprises a barrel (11) and a cutter (12), wherein the cutter (12) is arranged in the barrel (11) and is slidably connected to the barrel (11), wherein the blood vessel (2) to be installed is also arranged in the barrel (11) and is sheathed on the cutter (12), wherein the distal end of the blood vessel (2) to be installed is detachably installed on the barrel (11), and the proximal end of the blood vessel (2) to be installed is located at the proximal end of the barrel (11), and a clamping component (21) is provided at the proximal end of the blood vessel (2) to be installed, wherein the clamping component (21) comprises a first clamping wall (211) and a second clamping wall (212) which are elastically connected; In an initial state, the second clamping wall (212) is clamped on the tool (12), so that the second clamping wall (212) can cut into the main blood vessel along with the tool (12); in a use state, the displacement of the tool (12) toward the inside of the main blood vessel can cause the second clamping wall (212) to be separated from the tool (12); the second clamping wall (212) separated from the tool (12) can be elastically rotated to be arranged opposite to the first clamping wall (211); the first clamping wall (211) and the second clamping wall (212) arranged opposite to each other can clamp the vessel wall of the main blood vessel.

2. The combined device for blood vessel connection according to claim 1, It is characterized in that The outer wall of the cutter (12) is provided with a shrinking groove (121a) extending in the axial direction, and in an initial state, the second clamping wall (212) is clamped in the shrinking groove (121a).

3. The combined device for blood vessel connection according to claim 2, It is characterized in that The tool (12) comprises a tool head (121), and the shrinkage groove (121a) is arranged on the outer wall of the tool head (121).

4. The combined device for blood vessel connection according to claim 2, It is characterized in that The second engaging wall (212) comprises a plurality of partition walls (212a) arranged at intervals along the circumferential direction, the number of the shrinking grooves (121a) is plural, and in an initial state, each of the partition walls (212a) is engaged in a corresponding shrinking groove (121a) in a one-to-one correspondence.

5. The combined device for blood vessel connection according to claim 2, It is characterized in that The upper end of the shrinkage groove (121a) is also connected to a receiving groove (121b) that does not restrict the rotation of the second clamping wall (212) and is used to accommodate the second clamping wall (212) and / or a portion connecting the first clamping wall (211) and the second clamping wall (212).

6. The combined device for blood vessel connection according to claim 1, It is characterized in that The clamping member (21) is provided with a hemostatic component (215).

7. The combined device for blood vessel connection according to claim 1, It is characterized in that The cutter (12) comprises a cutter head (121). In an initial state, the cutter head (121) has a portion protruding from the proximal end of the cylinder (11), and the proximal end of the cutter head (121) is provided with a needle (121c) and a blade (121d).

8. The combined device for blood vessel connection according to any one of claims 1 to 7, It is characterized in that The blood vessel (2) to be installed comprises a blood vessel body (24), a transition connector (22) is provided at the proximal end of the blood vessel body (24), the transition connector (22) comprises a cylindrical portion (221), the cylindrical portion (221) is sleeved and fixed on the inner tube wall of the blood vessel (2) to be installed, the proximal end of the cylindrical portion (221) is provided with a wing plate portion (222) extending radially outward, and the first clamping wall (211) is connected to the wing plate portion (222).

9. The combined device for blood vessel connection according to claim 8, It is characterized in that The wing plate portion (222) is located radially outside the cylindrical portion (221) and is capable of abutting against the proximal end portion of the cylindrical body (11) along the axial direction.

10. The combined device for blood vessel connection according to any one of claims 1 to 7, It is characterized in that The blood vessel (2) to be installed comprises a blood vessel body (24), a first limiting member (23) is provided at the distal end of the blood vessel body (24), a first adjusting member (13) capable of adjusting the assembly depth is connected to the wall of the cylinder (11), and a portion of the first adjusting member (13) extending into the cylinder (11) can cooperate with the first limiting member (23) to limit the position of the distal end of the blood vessel (2) to be installed in the cylinder (11).

11. The combined device for blood vessel connection according to any one of claims 1 to 7, It is characterized in that The blood vessel (2) to be installed comprises a blood vessel body (24), and a butt joint component is provided at the distal end of the blood vessel body (24) for connecting two blood vessels (2) to be installed.

12. The combined device for blood vessel connection according to any one of claims 1 to 7, It is characterized in that The knife (12) further comprises a knife rod (122), the outer wall of which is provided with a blood blocking component, the blood blocking component being in sliding sealing contact with the inner wall of the blood vessel (2) to be installed.

13. The combined device for blood vessel connection according to any one of claims 1 to 7, It is characterized in that The tool (12) further comprises a tool rod (122), the outer wall of which is provided with a second limiting member (122b), the wall of the cylinder (11) is connected with a second adjusting member (14) capable of adjusting the assembly depth, and the portion of the second adjusting member (14) extending into the cylinder (11) can cooperate with the second limiting member (122b) to limit the position of the tool (12) in the cylinder (11).

14. The combined device for blood vessel connection according to claim 13, It is characterized in that The cylinder (11) is provided with a stroke limiting component (111), and the tool (12) is provided with a second limiting component. The cooperation between the second adjustment component (14) and the second limiting component (122b) is in a released state. The stroke limiting component (111) is used to cooperate with the second limiting component to limit the size of the tool (12) cutting into the main blood vessel.

15. The combined device for blood vessel connection according to claim 14, It is characterized in that The cylinder wall of the cylinder (11) is provided with a stroke adjustment hole (112) extending in the axial direction, and the stroke limiting component (111) is installed in the stroke adjustment hole (112) and can slide in the stroke adjustment hole (112).

16. The combined device for blood vessel connection according to claim 13, It is characterized in that It also comprises an elastic reset member (15), wherein the elastic reset member (15) interacts with the tool (12) and is used for resetting the tool (12).

17. The combined device for blood vessel connection according to claim 16, It is characterized in that The second limiting member (122b) is annular and is externally mounted on the knife rod (122); It also includes a clamping member (16), which is mounted on the knife rod (122). The clamping member (16) and the elastic reset member (15) respectively act on the axial ends of the second limiting member (122b) to locate the installation position of the second limiting member (122b) relative to the knife rod (122).

18. The combined device for blood vessel connection according to any one of claims 1 to 7, It is characterized in that Protective caps (17) are detachably mounted on both axial ends of the cylinder (11).

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