Balloon structure and conveying system

Abstract

The invention provides a balloon structure and a delivery system, and relates to the technical field of medical instruments.The balloon structure comprises a pressing and holding pipe, the pressing and holding pipe comprises a first delivery pipe, a first catheter and a second delivery pipe, the first delivery pipe is installed at the first end of the first catheter, and the second delivery pipe is installed at the second end of the first catheter; through holes are formed in the first conveying pipe and the second conveying pipe; the balloon comprises a first tip part, a second tip part and an expansion space, the first tip part is communicated with the expansion space, the first tip part protrudes in the direction away from the expansion space, the expansion space is communicated with the second tip part, and the second tip part protrudes in the direction away from the expansion space; wherein the first delivery pipe is arranged at the first tip part, the second delivery pipe is arranged at the second tip part, and the second delivery pipe is connected with one end, extending into the second tip part, of the second catheter.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a balloon structure and a delivery system. Background Art

[0002] According to the different opening methods, the core devices required for transcatheter aortic valve replacement (TAVR) can be divided into balloon-expandable interventional valves and self-expanding (self-expanding) interventional valves. At present, the use of balloon-expandable interventional valves requires the balloon to be mechanically compressed on the delivery system in vitro, and then the delivery system sends the balloon to the predetermined position, and then the balloon is expanded to expand the valve, so that it can open the narrow aortic valve, thereby expanding the valve and promoting blood circulation. However, the balloon expansion process requires the balloon to be in an expanded state for a long time, which can easily cause vascular occlusion, and the balloon needs to be withdrawn in time after it is expanded to a filled state. The withdrawal of the liquid in the balloon usually requires a long operation time, which is also easy to affect blood circulation. Therefore, the balloon structure in the related technology requires a long operation time during the expansion or withdrawal process, which affects the patency of the blood vessels and increases the probability of complications in patients. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a balloon structure and a delivery system to solve the problem that the balloon structure in the related art requires a long operation time during the expansion or withdrawal process, which affects the patency of blood vessels and increases the probability of complications in patients.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, the present application provides a balloon structure, comprising:

[0006] The crimping tube comprises a first delivery tube, a first conduit and a second delivery tube, wherein the first delivery tube is installed at a first end of the first conduit, and the second delivery tube is installed at a second end of the first conduit, and through holes are provided on the first delivery tube and the second delivery tube;

[0007] The balloon comprises a first tip portion, a second tip portion and an expansion space, wherein the first tip portion is connected to the expansion space and the first tip portion protrudes in a direction away from the expansion space, the expansion space is connected to the second tip portion and the second tip portion protrudes in a direction away from the expansion space;

[0008] The first delivery tube is arranged at the first tip portion, the second delivery tube is arranged at the second tip portion, and the second delivery tube is connected to an end of a second catheter extending into the second tip portion, and the second catheter is a catheter in a delivery system for delivering the balloon structure.

[0009] Optionally, the first delivery tube and the second delivery tube are truncated cone structures, the diameter of the first delivery tube close to the first conduit is smaller than the diameter of the end away from the first conduit, and the diameter of the second delivery tube close to the first conduit is smaller than the diameter of the end away from the first conduit.

[0010] Optionally, when the balloon is in an inflated state, the first tip portion and the second tip portion are conical structures.

[0011] Optionally, a third catheter is further included, which is arranged in the crimping tube and the second catheter, and the third catheter includes an inner layer structure, a middle layer structure and an outer layer structure, the inner layer structure is wrapped by the middle layer structure, the middle layer structure is wrapped by the outer layer structure, the inner layer structure is used for passing a guide wire, and the guide wire is used to deliver the balloon structure.

[0012] Optionally, the first end of the third catheter extends from the first delivery tube, and the portion of the first end of the third catheter extending from the first delivery tube is connected to the first tip portion;

[0013] The second end of the third conduit extends from the second delivery tube, and the portion of the second end of the third conduit extending out of the second delivery tube extends into the second conduit.

[0014] Optionally, the first tip portion includes a tip and a filling portion, the tip is a conical structure, a first end of the filling portion is connected to the expansion space, a second end of the filling portion covers an edge portion of the tip close to the bottom surface, and the tip protrudes in a direction away from the expansion space;

[0015] The portion of the first end of the third catheter that extends out of the first delivery tube extends into the tip, and the first end of the third catheter is fixed in the tip.

[0016] In a second aspect, the present application also provides a delivery system, comprising a second catheter and a balloon structure as described in any one of the first aspects, wherein the first end of the second catheter extends into one end of the second tip portion in the balloon structure, and the first end of the second catheter is fixedly connected to the second delivery tube of the compression grip tube in the balloon structure.

[0017] Optionally, it also includes a fourth catheter and a connecting seat, the fourth catheter is covered on the second catheter, the end of the fourth catheter away from the balloon structure is connected to the first end of the connecting seat, and the connecting seat is provided with a first port and a second port, the first port is used for passing a guide wire arranged in the crimping tube and the second catheter, and the second port is used for filling or withdrawing liquid for expanding the balloon structure.

[0018] Optionally, the first port is arranged at the second end of the connecting seat, and the extension direction of the first port is the same as the extension direction of the fourth conduit, the second port is arranged between the first end of the connecting seat and the first port, and the bifurcation angle formed between the extension direction of the first port and the extension direction of the second port is less than 90 degrees;

[0019] Wherein, a first reinforcing rib is arranged at the bifurcation angle, and a second reinforcing rib is arranged at the complementary angle of the bifurcation angle.

[0020] Optionally, an operating handle is further included, wherein the operating handle is arranged on one end of the second catheter close to the fourth catheter, and the operating handle is used to adjust the curvature of the second catheter and the curvature of the third catheter.

[0021] In the embodiment of the present application, a grip tube is provided in the balloon structure, and a first delivery tube, a first conduit and a second delivery tube connected in sequence are provided in the grip tube, and through holes are provided on the first delivery tube and the second delivery tube at both ends of the grip tube. When liquid is filled from the second delivery tube connected to the second conduit, the liquid can flow out from the through holes on the first delivery tube and the second delivery tube to evenly fill the balloon. When the liquid is withdrawn, the liquid can also be withdrawn from the through holes at both ends of the grip tube at the same time, so that the balloon can be more evenly and quickly reduced. At the same time, the present application arranges the first delivery tube at the first tip of the balloon and the second delivery tube at the second tip of the balloon, so that the first delivery tube and the second delivery tube can both be filled with liquid or withdrawn. In the process of filling the liquid into the balloon or withdrawing the liquid in the balloon, the operation can be completed more quickly, shortening the time of blood blockage and reducing the probability of complications of patients due to blood blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is one of the structural schematic diagrams of a balloon structure provided in an embodiment of the present application;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the medium pressure grip tube;

[0025] Figure 3 for Figure 1 A cross-sectional view of the mid-balloon structure;

[0026] Figure 4 A second structural schematic diagram of a balloon structure provided in an embodiment of the present application;

[0027] Figure 5 A schematic structural diagram of a fourth conduit and a connecting seat in a delivery system provided in an embodiment of the present application;

[0028] The reference numerals are as follows:

[0029] 100: balloon structure; 110: grip tube; 111: first delivery tube; 112: first catheter; 113: second delivery tube; 114: through hole; 120: balloon; 121: first tip; 1211: tip; 1212: filling part; 122: second tip; 123: expansion space; 130: third catheter;

[0030] 200: second conduit; 300: fourth conduit; 400: connection seat; 410: first port; 420: second port. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0033] The present application embodiment provides a balloon structure and a delivery system, such as Figure 1 As shown, the balloon structure 100 includes:

[0034] The crimping tube 110 includes a first delivery tube 111, a first conduit 112, and a second delivery tube 113. The first delivery tube 111 is installed at a first end of the first conduit 112, and the second delivery tube 113 is installed at a second end of the first conduit 112. Through holes are formed in the first delivery tube 111 and the second delivery tube 113.

[0035] The balloon 120 includes a first tip portion 121, a second tip portion 122 and an expansion space 123, wherein the first tip portion 121 is connected to the expansion space 123 and the first tip portion 121 protrudes in a direction away from the expansion space 123, the expansion space 123 is connected to the second tip portion 122 and the second tip portion 122 protrudes in a direction away from the expansion space 123;

[0036] The first delivery tube 111 is arranged at the first tip portion 121 , the second delivery tube 113 is arranged at the second tip portion 122 , and the second delivery tube 113 is connected to one end of the second catheter 200 extending into the second tip portion 122 , and the second catheter 200 is a catheter in a delivery system for delivering the balloon structure 100 .

[0037] In some embodiments, Figure 1 As shown, the balloon structure 100 includes a grip tube 110 and a balloon 120, and can be used for TAVR as a balloon-expandable interventional valve. The balloon structure 100 is connected to a second catheter 200, and liquid can be filled into or extracted from the balloon 120 through the second catheter 200. Specifically, a second delivery tube 113 disposed at the second end of the grip tube 110 can be connected to the second catheter 200, and can receive liquid filled into the balloon through the second catheter 200 by an external device. The second delivery tube 113 transmits the liquid to the first delivery tube 111 through the first catheter 112. Figure 2 As shown, since a plurality of through holes 114 are provided on the first delivery tube 111 and the second delivery tube 113, liquid can flow out from each through hole 114 and be filled into the balloon 120. The first delivery tube 111 and the second delivery tube 113 are respectively arranged at the first tip 121 and the second tip 122 of the balloon 120, so that both ends of the balloon 120 can be filled with liquid at the same time and start to expand, thereby reducing the time required for the balloon to expand to a full state and shortening the time of blood vessel blockage.

[0038] In some other embodiments of the present application, when it is necessary to withdraw the liquid in the balloon 120, the liquid can be withdrawn simultaneously through the through holes 114 opened on the first delivery tube 111 and the second delivery tube 113, and the liquid in the first tip portion 121 and the second tip portion 122 can be withdrawn evenly, and the liquid in the expansion space 123 will also flow into the first tip portion 121 and the second tip portion 122 to be withdrawn evenly. Therefore, the embodiments of the present application can reduce the situation where the liquid at one end of the balloon 120 has been withdrawn and there is still a lot of liquid at the other end, speed up the withdrawal speed of the liquid in the balloon, and shorten the blood blockage time.

[0039] It is understandable that the present application does not impose any specific restrictions on the number and shape of the through holes 114 opened on the first delivery pipe 111 and the second delivery pipe 113, and can be set accordingly according to actual needs such as liquid flow rate.

[0040] Optionally, the first delivery pipe 111 and the second delivery pipe 113 are truncated cone structures, the diameter of the first delivery pipe 111 at one end close to the first conduit 112 is smaller than the diameter of the end away from the first conduit 112, and the diameter of the second delivery pipe 113 at one end close to the first conduit 112 is smaller than the diameter of the end away from the first conduit 112.

[0041] Please continue to refer to Figure 2 In some embodiments, the first delivery tube 111 and the second delivery tube 113 can be set to a truncated cone structure, that is, the diameter of the first delivery tube 111 and the second delivery tube 113 near the first conduit 112 is small, and the diameter of the tube opening away from the first conduit 112 is large. It can be seen that the crimping tube 110 as a whole can present a spindle-shaped structure, the diameter of the first conduit 112 in the middle is small, and the diameters of the first delivery tube 111 and the second delivery tube 113 at both ends are large. In this way, when a liquid with a large flow rate flows into the second conduit 200, the second delivery tube 113 can directly diffuse a part of the liquid to the second tip 122 through the through hole, and the other part continues to flow to the first delivery tube 111 through the first conduit 112, and diffuses from the first delivery tube 111 to the first tip 121.

[0042] When the liquid is withdrawn, the diameter of the interface between the second delivery tube 113 and the second catheter 200 is larger than the diameter of the first catheter 112. Not only can the liquid from the first tip portion 121 delivered by the first catheter 112 be withdrawn, but the liquid from the second tip portion 122 can also be withdrawn through the through hole 114 provided on the second delivery tube 113, thereby improving the efficiency of liquid withdrawal and shortening the time required for liquid withdrawal. This can effectively shorten the time of blood blockage, reduce blockage of the left ventricular outflow tract, etc., and also reduce the probability of complications such as ventricular fibrillation and cardiac arrest in patients, thereby maintaining a stable pulse pressure level.

[0043] It is worth mentioning that the structural design of the pressure grip tube 110 in the present application can disperse the stress during the input of the delivery system, avoid direct bending of the first conduit 112, and reduce the probability of operation accidents.

[0044] Optionally, when the balloon 120 is in a filled state, the first tip portion 121 and the second tip portion 122 are conical structures.

[0045] In some embodiments, the balloon 120 can be configured to include a structure with two pointed cones, including a first tip portion 121, an expansion space 123 and a second tip portion 122, the expansion space 123 being disposed between the first tip portion 121 and the second tip portion 122, and the expansion space 123 being connected to the first tip portion 121 and the second tip portion 122 on the left and right sides respectively.

[0046] It is worth mentioning that the balloon 120 in the embodiment of the present application can be made of polymer materials (such as nylon) so that the balloon 120 has high elasticity and pressure resistance, and can maintain stable performance during liquid filling and expansion or liquid withdrawal, thereby reducing operational risks.

[0047] Optionally, a third catheter 130 is further included, and the third catheter 130 is arranged in the crimping tube 110 and the second catheter 200. The third catheter 130 includes an inner layer structure, a middle layer structure and an outer layer structure. The inner layer structure is wrapped by the middle layer structure, and the middle layer structure is wrapped by the outer layer structure. The inner layer structure is used for passing a guide wire, and the guide wire is used to deliver the balloon structure 100.

[0048] In some embodiments, Figure 3 As shown, a third catheter 130 is also provided in the crimping tube 110. The third catheter 130 may be composed of a three-layer structure, including an inner layer, a middle layer, and an outer layer. The inner layer structure may be used for the smooth passage of a guide wire, and the guide wire may be used to guide the delivery of the balloon structure 100, ensuring that the correct path and position are maintained during the entire operation, and reducing deviation or mispositioning during the operation. The middle layer structure may be a structure for providing support and increasing the strength of the crimping tube 110, the second catheter 200, etc. The inner layer structure and the outer layer structure may both be made of materials such as polyether block amide. Since the polyether block amide itself has supporting properties, the lubricity and anti-thrombotic properties of the crimping tube 110, the second catheter 200, etc. may be improved. In this way, the third catheter 130 composed of the three-layer structure has good supporting properties and lubricity, and can accurately and safely deliver the balloon structure 100 to a specific position.

[0049] Optionally, the first end of the third conduit 130 extends from the first delivery tube 111, and the portion of the first end of the third conduit 130 extending from the first delivery tube 111 is connected to the first tip portion 121;

[0050] The second end of the third conduit 130 extends from the second delivery tube 113 , and the portion of the second end of the third conduit 130 extending from the second delivery tube 113 extends into the second conduit 200 .

[0051] In some embodiments, since the third catheter 130 needs to deliver the balloon structure 100 to a specific position, the third catheter 130 can be set in the grip tube 110 and the second catheter 200, and the operator controls the insertion and withdrawal of the third catheter 130 in the blood vessel through the device external to the second catheter 200, and the third catheter 130 drives the delivery balloon structure 100 to the specific position. Therefore, the second end of the third catheter 130 extends directly from the second delivery tube 113 and then extends into the second catheter 200, which facilitates the control of the third catheter 130 through the device external to the second catheter 200.

[0052] Specifically, the first end of the third catheter 130 can extend from the first delivery tube 111, and the extended portion can be connected to the tip of the first tip portion 121 of the balloon 120, thereby fixing one end of the third catheter 130 to the balloon 120, so as to facilitate the control of the balloon structure 100 by operating the third catheter 130. The connection between the first end of the third catheter 130 and the first tip portion 121 can be achieved by glue point bonding or thermal welding.

[0053] Optionally, the first tip portion 121 includes a tip 1211 and a filling portion 1212, the tip 1211 is a conical structure, a first end of the filling portion 1212 is connected to the expansion space 123, a second end of the filling portion 1212 covers an edge portion of the tip 1211 close to the bottom surface, and the tip 1211 protrudes in a direction away from the expansion space 123;

[0054] The portion of the first end of the third catheter 130 that extends out of the first delivery tube 111 extends into the tip 1211 , and the first end of the third catheter 130 is fixed in the tip 1211 .

[0055] In some embodiments, Figure 4As shown, in the process of delivering the balloon structure 100, in order to smoothly pass through the blood vessels and heart valves and reduce damage to the inner wall of the blood vessels and other tissues, the first tip portion 121 can be set as a pointed cone structure. The first tip portion 121 has both a tip and a space for accommodating liquid, so that the first tip portion 121 can be divided into a tip 1211 and a filling portion 1212. Among them, the filling portion 1212 is directly connected to the expansion space 123 in the middle of the balloon 120, and the filling portion 1212 can be a truncated cone structure when the balloon 120 is filled. For the filling portion 1212 of the truncated cone structure, its larger diameter port can be connected to the expansion space 123, and its smaller diameter end can be connected to the tip 1211.

[0056] Specifically, the smaller diameter port of the filling portion 1212 can directly wrap the edge of the bottom surface of the tip 1211, and the tip 1211 can be a conical structure, thereby forming a complete structure of the balloon 120. The tip 1211 can fix the end of the first end of the third catheter 130 to prevent the grip tube 110 and the third catheter 130 from changing their positions in the balloon 120, so that the balloon 120 can reach a specific position under the push of the third catheter 130.

[0057] In this way, through the design of the tip 1211 in the embodiment of the present application, the balloon 120 can smoothly pass through the blood vessels and heart valves during the delivery of the balloon structure 100, reducing damage to tissues such as the inner wall of the blood vessel.

[0058] The present application also provides a delivery system, including a second catheter 200 and Figure 1 In the balloon structure 100 shown, the first end of the second catheter 200 extends into one end of the second tip portion 122 in the balloon structure 100 , and the first end of the second catheter 200 is fixedly connected to the second delivery tube 113 of the grip tube 110 in the balloon structure 100 .

[0059] Optionally, it also includes a fourth catheter 300 and a connecting seat 400, the fourth catheter 300 is covered on the second catheter 200, the end of the fourth catheter 300 away from the balloon structure 100 is connected to the first end of the connecting seat 400, and the connecting seat 400 is provided with a first port 410 and a second port 420, the first port 410 is used for passing a guide wire arranged in the crimping tube 110 and the second catheter 200, and the second port 420 is used for filling or withdrawing liquid for expanding the balloon structure 100.

[0060] Please refer to Figure 5In some embodiments, the delivery system is used as a structure for delivering the balloon structure 100 to a specific location, and specifically may include a second catheter 200, a fourth catheter 300, and a connection seat 400, wherein the second catheter 200 is used to push the balloon structure 100, and the fourth catheter 300 may be used as a stress dispersion tube, and may be made of silicone rubber, wrapping the second catheter 200 to eliminate the stress caused by the second catheter 200 during use. The connection seat 400 is connected to the fourth catheter 300, and may be directly connected to an external device, so as to facilitate the control of the expansion or withdrawal of the balloon 120.

[0061] Specifically, the connection base 400 may be an integral structure, on which two ports may be provided, the first port 410 and the second port 420 may be two ports bifurcated on the connection base 400, the first port 410 may be externally connected to a device for pushing a guide wire, and the guide wire enters the cavity, the third catheter 130 and the crimping tube 110 through the first port 410 to realize the pushing control of the balloon structure 100. The second port 420 may be used for externally connecting to a device for filling or withdrawing liquid, so as to fill or withdraw liquid for expanding the balloon structure 100 into the balloon 120.

[0062] Optionally, the first port 410 is disposed at the second end of the connection base 400, and the extension direction of the first port 410 is the same as the extension direction of the fourth conduit 300, the second port 420 is disposed between the first end of the connection base 400 and the first port 410, and the bifurcation angle formed between the extension direction of the first port 410 and the extension direction of the second port 420 is less than 90 degrees;

[0063] Wherein, a first reinforcing rib is arranged at the bifurcation angle, and a second reinforcing rib is arranged at the complementary angle of the bifurcation angle.

[0064] In some embodiments, please refer to Figure 5 The connection seat 400 is provided with two ports, and the first port 410 can be provided at one end of the connection seat 400 away from the fourth catheter 300, and the space in the connection seat 400 accessed by the first port 410 can be used as a guidewire cavity. The space connected by the second port 420 can be used as a filling cavity or a withdrawal cavity. By filling the filling cavity of the second port 420 with liquid, the second port 420 is connected to the second catheter 200 and the third catheter 130, and thus, the second port 420 can fill the space between the second catheter 200 and the third catheter 130 with liquid, and the liquid is transmitted to the pressure grip tube 110 through the second catheter 200, and outputted to the balloon 120 by the pressure grip tube 110, so as to realize the expansion and filling of the balloon 120. Alternatively, the liquid is withdrawn through the withdrawal cavity, and the liquid in the balloon 120 is withdrawn through the space between the second catheter 200 and the third catheter 130, so as to realize the withdrawal of the liquid in the balloon 120.

[0065] In some other embodiments, Figure 5 As shown, the first port 410 and the second port 420 can be arranged on a side away from the fourth catheter 300. In this case, the first port 410 and the second port 420 are closer to the operator, which is convenient for the operator to complete the operation of the balloon structure 100 through the guidewire cavity or the filling cavity. In the present application, a reinforcing rib can be arranged between the first port 410 and the second port 420, and a reinforcing rib can also be arranged on the back side of the connecting seat 400 where the second port 420 is opened, to provide support and rigid support for the first port 410 and the second port 420, to prevent the connecting seat 400 from breaking under stress, and to improve the stability and safety of the delivery system.

[0066] Optionally, an operating handle is further included, which is disposed on one end of the second conduit 200 close to the fourth conduit 300 , and is used to adjust the curvature of the second conduit 200 and the curvature of the third conduit 130 .

[0067] In some embodiments, an operating handle may be provided outside the second catheter 200, and the operator may adjust the bending angle of the second catheter 200 by applying force to the operating handle. When the operator turns the operating handle, the guide wire provided in the second catheter 200 may be extended, rolled in, or released, thereby changing the degree of curvature of the second catheter 200. At the same time, the third catheter 130 is provided in the second catheter 200, and the curvature of the third catheter 130 may also be adjusted synchronously with the curvature adjustment of the second catheter 200. In addition, a screw may be provided on the operating handle, which may be used to further accurately control the tension of the guide wire. By rotating the handle, the screw moves on its thread, thereby changing the degree of tension of the bending wire, so as to more accurately adjust the curvature of the second catheter 200 and the third catheter 130.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0069] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A balloon structure, characterized in that: include: The crimping tube comprises a first delivery tube, a first conduit and a second delivery tube, wherein the first delivery tube is installed at a first end of the first conduit, and the second delivery tube is installed at a second end of the first conduit, and through holes are provided on the first delivery tube and the second delivery tube; The balloon comprises a first tip portion, a second tip portion and an expansion space, wherein the first tip portion is connected to the expansion space and the first tip portion protrudes in a direction away from the expansion space, the expansion space is connected to the second tip portion and the second tip portion protrudes in a direction away from the expansion space; The first delivery tube is arranged at the first tip portion, the second delivery tube is arranged at the second tip portion, and the second delivery tube is connected to an end of a second catheter extending into the second tip portion, and the second catheter is a catheter in a delivery system for delivering the balloon structure.

2. The balloon structure according to claim 1, characterized in that: The first delivery pipe and the second delivery pipe are truncated cone structures. The diameter of the first delivery pipe at one end close to the first conduit is smaller than the diameter of the end away from the first conduit. The diameter of the second delivery pipe at one end close to the first conduit is smaller than the diameter of the end away from the first conduit.

3. The balloon structure according to claim 1, characterized in that: When the balloon is in an inflated state, the first tip portion and the second tip portion are conical structures.

4. The balloon structure according to claim 1, characterized in that: It also includes a third catheter, which is arranged in the crimping tube and the second catheter. The third catheter includes an inner layer structure, a middle layer structure and an outer layer structure. The inner layer structure is wrapped by the middle layer structure, and the middle layer structure is wrapped by the outer layer structure. The inner layer structure is used for passing a guide wire, and the guide wire is used to deliver the balloon structure.

5. The balloon structure according to claim 4, characterized in that: The first end of the third conduit extends from the first delivery tube, and the portion of the first end of the third conduit extending from the first delivery tube is connected to the first tip portion; The second end of the third conduit extends from the second delivery tube, and the portion of the second end of the third conduit extending out of the second delivery tube extends into the second conduit.

6. The balloon structure according to claim 4, characterized in that: The first tip portion includes a tip and a filling portion, the tip is a conical structure, a first end of the filling portion is connected to the expansion space, a second end of the filling portion covers an edge portion of the tip close to the bottom surface, and the tip protrudes in a direction away from the expansion space; The portion of the first end of the third catheter that extends out of the first delivery tube extends into the tip, and the first end of the third catheter is fixed in the tip.

7. A conveying system, characterized in that: It comprises a second catheter and a balloon structure as described in any one of claims 1 to 6, wherein the first end of the second catheter extends into one end of the second tip portion in the balloon structure, and the first end of the second catheter is fixedly connected to the second delivery tube of the compression grip tube in the balloon structure.

8. The conveying system according to claim 7, characterized in that It also includes a fourth catheter and a connecting seat, wherein the fourth catheter is covered on the second catheter, and one end of the fourth catheter away from the balloon structure is connected to the first end of the connecting seat, and the connecting seat is provided with a first port and a second port, wherein the first port is used for passing a guide wire arranged in the crimping tube and the second catheter, and the second port is used for filling or withdrawing liquid for expanding the balloon structure.

9. The conveying system according to claim 8, characterized in that The first port is arranged at the second end of the connecting seat, and the extension direction of the first port is the same as the extension direction of the fourth conduit, the second port is arranged between the first end of the connecting seat and the first port, and the bifurcation angle formed between the extension direction of the first port and the extension direction of the second port is less than 90 degrees; Wherein, a first reinforcing rib is arranged at the bifurcation angle, and a second reinforcing rib is arranged at the complementary angle of the bifurcation angle.

10. The conveying system according to any one of claims 8 to 9, characterized in that: It also includes an operating handle, which is arranged on one end of the second catheter close to the fourth catheter, and is used to adjust the curvature of the second catheter and the curvature of the third catheter.

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