Conveying assembly and conveying system

Abstract

The utility model relates to a conveying assembly and a conveying system, a through catheter inner cavity is formed in an inner catheter, a through sheath inner cavity is formed in an outer sheath, the inner catheter is movably sleeved with the outer sheath, and at least one part of a catheter layer gap between the outer sheath and the inner catheter is used for containing an implant; the light-emitting element is arranged at the far end of the inner catheter and used for projecting positioning light rays, and an included angle is formed between the projection direction of the positioning light rays and the axial direction of the inner catheter and used for forming positioning light spots on the blood vessel wall of the target blood vessel. The light-emitting element can project positioning light, and the positioning light can form a positioning light spot on the blood vessel wall of the target blood vessel. An operator can see the positioning light spot at the far-end position of the conveying system from the outer surface of the blood vessel in the state that the blood vessel is not completely dissociated, and therefore the conveying progress and the real-time position of the conveying system are determined. The blood vessel can be incompletely dissociated without using rays, so that the operation difficulty is greatly reduced, and meanwhile, the wound of the operation on a patient is reduced.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a delivery assembly and a delivery system. Background Art

[0002] During open surgery, doctors sometimes need to place implants into a patient's blood vessels to treat corresponding diseases. When there is no ray condition in the open operating room, doctors will judge the position of the distal end of the implant system by touching or squeezing the blood vessels with their hands when releasing the implant. For this reason, surgeons usually need to expand the patient's incision area and fully free the blood vessels. However, this will increase the surgical difficulty and the trauma to the patient, which is not conducive to the patient's postoperative recovery. Therefore, if it is possible to allow doctors to judge the position of the distal end of the implant without completely freeing the blood vessels in the absence of rays, it will greatly reduce the surgical difficulty and the trauma to the patient during the operation. Summary of the Invention

[0003] Based on this, in view of the above-mentioned technical problems, it is necessary to provide a delivery assembly and a delivery system.

[0004] This application provides a delivery assembly, and the delivery assembly includes:

[0005] An inner catheter, the inner catheter has a through catheter lumen inside, which is used for threading a guiding wire;

[0006] An outer sheath, the outer sheath has a through sheath lumen inside, the outer sheath is movably sleeved outside the inner catheter, and at least a part of the tube layer gap between the outer sheath and the inner catheter is used for accommodating an implant;

[0007] A light-emitting element, the light-emitting element is arranged on at least one of the inner catheter and the outer sheath, and the light-emitting element can form a positioning light spot through the blood vessel wall of the target blood vessel.

[0008] In one embodiment, the light-emitting element is used to project positioning light, and the projection direction of the positioning light has an included angle with the axial direction of the inner catheter, so as to form a positioning light spot on the blood vessel wall of the target blood vessel; and / or,

[0009] The light-emitting element is arranged at the distal end of the inner catheter; and / or,

[0010] The number of the light-emitting elements is multiple, and the multiple light-emitting elements are arranged along the circumferential direction of the inner catheter; and / or,

[0011] The light-emitting element is a laser lamp, and the positioning light is a laser ray; and / or,

[0012] The color of the positioning light is blue; and / or,

[0013] The light emitting element has light focusing capability; and / or,

[0014] The projection direction of the positioning light is perpendicular to the axial direction of the inner catheter; and / or,

[0015] The outer surface of the outer sheath tube has a hydrophilic coating; and / or,

[0016] The diameter of the positioning light spot is smaller than the diameter of the implant in the convergent state.

[0017] In one embodiment, the delivery assembly comprises:

[0018] A guiding element, wherein the guiding element is arranged at the distal end of the inner catheter, the interior of the guiding element has a through guiding channel, the guiding channel is connected to the inner cavity of the catheter, the side wall of the guiding element is provided with a positioning channel connected to the guiding channel, the light-emitting element is arranged in the positioning channel, and the positioning light is projected outward through the positioning channel.

[0019] In one embodiment, the positioning channel includes a positioning groove located on the inner wall of the guide channel and a projection window penetrating the side wall of the guide element, the projection window is connected to the positioning groove, the light-emitting element is arranged in the positioning groove, and the light-emitting element is used to project the positioning light through the projection window.

[0020] In one embodiment, the projection window has a shape of a circle, an ellipse, a rectangle and a polygon; and / or,

[0021] The guide element comprises a distal guide section and a proximal guide section, wherein the outer contour diameter of the distal guide section gradually increases in the direction from the distal end to the proximal end, and the outer contour diameter of the proximal guide section gradually decreases in the direction from the distal end to the proximal end, and the projection window is located between the distal guide section and the proximal guide section.

[0022] In one embodiment, the delivery assembly comprises:

[0023] A multi-lumen tube, wherein the multi-lumen tube has a first inner lumen channel and at least one second inner lumen channel extending in its own axial direction, the multi-lumen tube is fixedly sleeved on the outside of the inner catheter through the first inner lumen channel, and the outer sheath is movably sleeved on the outside of the multi-lumen tube;

[0024] A transmission wire is provided in the second inner cavity channel and is used to electrically connect the light emitting element and a control component, wherein the control component is used to control the operation of the light emitting element.

[0025] In one embodiment, the multi-lumen tube includes a distal section of the lumen tube and a proximal section of the lumen tube that are connected, and the tube body strength of the distal section of the lumen tube is less than the tube body strength of the proximal section of the lumen tube; or,

[0026] The multi-lumen tube includes a distal section of the lumen tube and a proximal section of the lumen tube that are connected, and a reinforcing tube is sleeved outside the proximal section of the lumen tube of the multi-lumen tube.

[0027] In one embodiment, the delivery assembly includes:

[0028] A wrapping tube, the distal region of the inner catheter exposes from the distal end of the multi-lumen tube, the wrapping tube is sleeved outside the distal region of the inner catheter, the proximal end of the wrapping tube is hermetically connected to the distal end of the multi-lumen tube, and the distal end of the transmission wire is hermetically penetrated between the wrapping tube and the inner catheter and is electrically connected to the light-emitting element; and / or,

[0029] A holding element, the interior of the holding element has a through assembly channel, the holding element is sleeved outside the inner catheter and the multi-lumen tube through the assembly channel, and an assembly chamber communicating with the assembly channel is opened on the side wall of the holding element.

[0030] In one embodiment, the delivery assembly includes:

[0031] A system tail connection element, the system tail connection element is arranged at the proximal end of the inner catheter and is used for exhausting air during the operation and threading a guide wire; and / or,

[0032] A proximal retraction element, the proximal retraction element is arranged at the proximal end of the outer sheath tube, and the proximal retraction element is a conical structure.

[0033] The present application provides a delivery system, and the delivery system includes the delivery assembly.

[0034] In the above-mentioned delivery assembly and delivery system, the light-emitting element can project positioning light, and the positioning light can form a positioning light spot on the blood vessel wall of the target blood vessel. The operator can see the positioning light spot at the distal position of the delivery system from the outer surface of the blood vessel without completely dissecting the blood vessel. The positioning light spot on the surface of the blood vessel tissue can also move as the implant moves during the implant introduction process. If the positioning light spot is not clear enough, the operator can also slightly rotate the delivery system to make the light-emitting element face the operator to adjust the clarity of the positioning light spot, thereby determining the delivery progress and real-time position of the delivery system. The use of rays is not required, and the blood vessel does not need to be completely dissected, which greatly reduces the surgical difficulty and at the same time reduces the trauma to the patient. Description of the Drawings

[0035] Figure 1Schematic structural diagram of a conveying component provided by an embodiment of the present application.

[0036] Figure 2 Exploded schematic diagram of a conveying component provided by an embodiment of the present application.

[0037] Figure 3 Schematic structural diagram of a guiding element provided by an embodiment of the present application.

[0038] Figure 4 Planar schematic diagram of a guiding element provided by another embodiment of the present application.

[0039] Figure 5 As Figure 4 Shown cross-sectional schematic diagram of the guiding element.

[0040] Figure 6 Schematic structural diagram of the connection structure between a light-emitting element and a transmission wire provided by an embodiment of the present application.

[0041] Figure 7 Schematic structural diagram of the assembly structure of a guiding element, a light-emitting element and a transmission wire provided by an embodiment of the present application.

[0042] Figure 8 Schematic distribution structure diagram of the first inner cavity channel and the second inner cavity channel of a multi-cavity tube provided by an embodiment of the present application.

[0043] Figure 9 Schematic structural diagram of a holding element provided by an embodiment of the present application.

[0044] Figure 10 Schematic diagram of the intraoperative use state of a conveying system provided by an embodiment of the present application.

[0045] Reference numerals:

[0046] 1000, inner catheter; 2000, guiding wire; 3000, outer sheath; 4000, light-emitting element; 5000, guiding element; 6000, multi-cavity tube; 7000, reinforcing tube; 8000, wrapping tube;

[0047] 1100, holding element; 1200, system tail connection element; 1100a, assembly channel; 1100b, assembly chamber;

[0048] 3100, proximal retraction element;

[0049] 4100, transmission wire; 4200, control component;

[0050] 5000a, distal guiding section; 5000b, proximal guiding section; 5100, guiding channel; 5200, positioning channel; 5200a, positioning groove; 5200b, projection window;

[0051] 6000a, first inner cavity channel; 6000b, second inner cavity channel. Detailed implementation manners

[0052] To make the above objects, features, and advantages of the present application more obvious and understandable, the following describes the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0053] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0054] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In the present application, unless otherwise clearly defined and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0056] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0057] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0058] In order to more clearly describe the structure of the delivery system, the term "distal end" is hereby defined to mean the end far from the operator during the surgical operation, and the "proximal end" means the end close to the operator during the surgical operation. Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0059] As Figure 1 and Figure 2 shown, an embodiment of the present application provides a delivery assembly for delivering an implant into a living body. Among them, the implant in this application can be a stent or other medical devices, and this application does not make specific limitations thereto. In some of these embodiments, the delivery assembly includes an inner catheter 1000, an outer sheath 3000, and a light-emitting element 4000.

[0060] The inner catheter 1000 has a through catheter lumen inside. Referring to Figure 10 shown, the catheter lumen of the inner catheter 1000 can be used to thread a guide wire 2000. The outer sheath 3000 has a through sheath lumen inside. The outer sheath 3000 is movably sleeved outside the inner catheter 1000, and a layer gap can be formed between the inner wall of the outer sheath 3000 and the outer wall of the inner catheter 1000. Among them, at least a part of the layer gap between the outer sheath 3000 and the inner catheter 1000 can be used to accommodate the implant.

[0061] The material of the inner catheter 1000 can be selected as nitinol. A system tail connection element 1200 can be arranged at the proximal end of the inner catheter 1000, and the system tail connection element 1200 can be connected to the inner catheter 1000 through processes such as gluing and hot melting. During the operation, the operator can use the system tail connection element 1200 to perform the exhaust operation and to thread the guiding wire 2000. The outer surface of the outer sheath tube 3000 has a hydrophilic coating, so that when the delivery assembly is introduced into the target blood vessel in the body, the outer surface of the outer sheath tube 3000 is smoother. A proximal retraction element 3100 can be arranged at the proximal end of the outer sheath tube 3000. The proximal retraction element 3100 can adopt a conical structure. The arrangement of the proximal retraction element 3100 on the outer sheath tube 3000 is convenient for holding. Therefore, the proximal retraction element 3100 can help pull the outer sheath tube 3000 in the proximal direction when releasing the implant, without directly operating the outer sheath tube 3000.

[0062] The implant can be selected with a suitable structure, shape and material according to the surgical requirements, which are not limited here. The implant can have the ability to deform, so that the implant can be in an expanded state in the non-force state and can be in a contracted state in the force state. After the implant is assembled in the tube layer gap between the outer sheath tube 3000 and the inner catheter 1000, the implant can be subjected to a radial force applied by the outer sheath tube 3000, so that the implant is received in the tube layer gap between the outer sheath tube 3000 and the inner catheter 1000 in a contracted state for the operator to deliver to the target blood vessel through the delivery assembly. Among them, a fixed area for receiving the implant can be set in the tube layer gap between the outer sheath tube 3000 and the inner catheter 1000 to ensure the stability of the implant reception, which is not limited here.

[0063] The light-emitting element 4000 is arranged at the distal end of the inner catheter 1000. The light-emitting element 4000 is used to project positioning light. The projection direction of the positioning light has an angle with the axial direction of the inner catheter 1000. The positioning light projected by the light-emitting element 4000 is used to form a positioning light spot on the blood vessel wall of the target blood vessel. The positioning light spot can be used by the operator to identify the current position of the light-emitting element 4000. The light-emitting element 4000 is located on the inner catheter 1000, and the light-emitting element 4000 is pre-fixed at the distal end of the inner catheter 1000 for example. Therefore, according to the position identification of the light-emitting element 4000, the current position of the inner catheter 1000 in the target blood vessel can be identified.

[0064] The number of the light-emitting elements 4000 can be set to one or more. For example, multiple light-emitting elements 4000 can be arranged circumferentially around the inner catheter 1000. The light-emitting elements 4000 can be connected with transmission wires 4100, which are responsible for delivering electric energy, control signals, etc. to the light-emitting elements 4000. The transmission wires 4100 can be hidden inside the delivery assembly. The front end of the transmission wire 4100 is connected to the light-emitting element 4000, and the rear end of the transmission wire 4100 is connected to a control component 4200 that controls the operation of the light-emitting element 4000. The operator can use the control component 4200 to control control operations such as the opening and closing and power supply of the light-emitting element 4000 according to intraoperative needs. The light-emitting element 4000 can be a laser lamp, so that the positioning light is a laser ray. The light intensity of the laser lamp can penetrate a certain thickness of the blood vessel wall. The color of the positioning light can be blue, which has a higher distinguishability from blood tissue.

[0065] The projection direction of the positioning light can be perpendicular to the axial direction of the inner catheter 1000, so that the positioning light projected by the light-emitting element 4000 can be focused towards the operator. The light-emitting element 4000 can have a certain light focusing ability, such as the focusing ability of a laser lamp. The light focusing ability of the light-emitting element 4000 can form a positioning light spot by focusing on the tissue surface. Those skilled in the art set that the diameter of the formed positioning light spot is smaller than the diameter of the implant in the constrained state. For example, for an implant with a diameter of 10 mm, the diameter of the formed positioning light spot can be less than 10 mm, thereby enabling the operator to more clearly identify the positioning light spot.

[0066] The light-emitting element 4000 can be fixed to the inner catheter 1000 in a variety of different ways, including but not limited to direct assembly or indirect assembly, etc. For example, in one embodiment, as Figures 3 to 5 shown, the delivery assembly can include a guiding element 5000, which is arranged at the distal end of the inner catheter 1000 and is used to mount the light-emitting element 4000. The proximal end of the guiding element 5000 can be connected to the distal end of the inner catheter 1000 through processes such as injection molding and gluing. The guiding element 5000 has a through guiding channel 5100 inside, and the guiding channel 5100 communicates with the catheter lumen. The guiding channel 5100 and the catheter lumen can communicate with each other to form a complete channel for the guiding wire 2000 to pass through. A positioning channel 5200 communicating with the guiding channel 5100 is opened on the side wall of the guiding element 5000, and the light-emitting element 4000 can be arranged in the positioning channel 5200, such as various feasible assembly methods such as snap connection, bonding or screw connection, and the light-emitting element 4000 can project the positioning light outward through the positioning channel 5200.

[0067] As Figure 5As shown, in one embodiment, the positioning channel 5200 includes a positioning groove 5200a located on the inner wall of the guiding channel 5100 and a projection window 5200b penetrating the side wall of the guiding element 5000. The projection window 5200b communicates with the positioning groove 5200a. The light-emitting element 4000 is disposed in the positioning groove 5200a. The groove shape and size of the positioning groove 5200a can be consistent with the shape and size of at least a part of the structure of the light-emitting element 4000, so that at least a part of the structure of the light-emitting element 4000 can be fittingly assembled in the positioning groove 5200a by means of fitting. The light-emitting element 4000 is used to project positioning light outward through the projection window 5200b. The shape of the projection window 5200b is one of a circle, an ellipse, a rectangle, and a polygon. For example Figure 3 or Figure 4 As shown, different-shaped projection windows 5200b can cause the positioning light to be projected outward in a certain shape.

[0068] The guiding element 5000 has a distal guiding section 5000a and a proximal guiding section 5000b. The distal guiding section 5000a and the proximal guiding section 5000b can form the entire structure of the guiding element 5000, or the distal guiding section 5000a and the proximal guiding section 5000b can also only account for a part of the structure of the guiding element 5000. For example, there is also a partial area between the distal guiding section 5000a and the proximal guiding section 5000b. The outer contour diameter of the distal guiding section 5000a gradually increases in the direction from the distal end to the proximal end, so that the distal guiding section 5000a can form a tapered gradient structure similar to a cone. The outer contour diameter of the proximal guiding section 5000b gradually decreases in the direction from the distal end to the proximal end, so that the proximal guiding section 5000b can form a tapered gradient structure similar to a cone. The projection window 5200b is located between the distal guiding section 5000a and the proximal guiding section 5000b. For example, when the distal guiding section 5000a and the proximal guiding section 5000b only account for a part of the structure of the guiding element 5000, for example, the projection window 5200b is located in a partial area between the distal guiding section 5000a and the proximal guiding section 5000b.

[0069] The size gradient design of the distal guiding section 5000a and the proximal guiding section 5000b can facilitate the introduction and withdrawal of the delivery assembly in the target blood vessel. For example, when the delivery assembly is introduced (advanced), the tapered gradient structure formed by the distal guiding section 5000a facilitates the introduction of the delivery assembly and reduces the resistance during the introduction process. With a similar function, when the delivery assembly is withdrawn (retreated), the tapered gradient structure formed by the proximal guiding section 5000b facilitates the withdrawal of the delivery assembly and reduces the resistance during the withdrawal process.

[0070] The transmission wire 4100 can be hermetically assembled in the delivery assembly in a variety of ways. For example, Figures 6 to 8 As shown, in one embodiment, the delivery assembly includes a multi-lumen tube 6000, which can be made of resin. The interior of the multi-lumen tube 6000 has a first interior lumen channel 6000a that runs through and at least one second interior lumen channel 6000b. The multi-lumen tube 6000 is fixedly sleeved outside the inner catheter 1000 through the first interior lumen channel 6000a, and the sleeving of the multi-lumen tube 6000 relative to the inner catheter 1000 does not cover the area on the inner catheter 1000 for implanting the implant, so that the sleeving of the multi-lumen tube 6000 relative to the inner catheter 1000 does not affect the installation of the implant.

[0071] The outer sheath tube 3000 is movably sleeved outside the inner catheter 1000 and the multi-lumen tube 6000. Among them, the outer sheath tube 3000 can cover the multi-lumen tube 6000, and a tube layer gap for accommodating the implant can still be formed between the outer sheath tube 3000 and the inner catheter 1000. As Figure 8 shown, the number and arrangement of the second interior lumen channels 6000b can be determined according to the number and required arrangement of the light-emitting elements 4000. The transmission wire 4100 for electrically connecting the light-emitting elements 4000 and the control components 4200 can be hermetically passed through the second interior lumen channels 6000b to avoid direct contact with blood, and the light-emitting elements 4000 and the control components 4200 can be electrically connected through the transmission wire 4100.

[0072] As Figure 1 and Figure 9 shown, the delivery assembly may further include a holding element 1100. The interior of the holding element 1100 has a through assembly channel 1100a. The holding element 1100 is sleeved outside the inner catheter 1000 and the multi-lumen tube 6000 through the assembly channel 1100a. An assembly chamber 1100b communicating with the assembly channel 1100a is provided on the side wall of the holding element 1100, and a control component 4200 is arranged in the assembly chamber 1100b. The control component 4200 is electrically connected to the transmission wire 4100.

[0073] When the operator holds the holding element 1100, it is necessary to transfer the supporting force to the outer sheath tube 3000. Therefore, when the multi-lumen tube 6000 is divided into a connected distal section of the lumen tube and a proximal section of the lumen tube, the tube body strength of the distal section of the lumen tube can be defined to be less than that of the proximal section of the lumen tube. The distal part of the multi-lumen tube 6000 can be bent, and the multi-lumen tube 6000 should have a lower hardness so that the delivery assembly is more stable when retracting. Regarding the setting of the tube body strength of the distal section and the proximal section of the lumen tube, those skilled in the art can achieve it by setting the material or the structure. For example, the distal section and the proximal section of the lumen tube of the multi-lumen tube 6000 can be set with different materials having different strengths, or a reinforcing tube 7000 can be sleeved outside the proximal section of the lumen tube of the multi-lumen tube 6000. The tube body strength of the reinforcing tube 7000 is greater than that of the multi-lumen tube 6000. For example, the reinforcing tube 7000 can be made of stainless steel material, and the tube body strength of the proximal section of the lumen tube is structurally improved by using the reinforcing tube 7000.

[0074] The multi-lumen tube 6000 is only sleeved on a part of the tube body section of the inner catheter 1000. For example, the distal region of the inner catheter 1000 can protrude from the distal end of the multi-lumen tube 6000. The inner cavity of the wrapping tube 8000 can be sleeved outside the distal region of the inner catheter 1000 to wrap the part of the inner catheter 1000 that is not sleeved by the multi-lumen tube 6000. The wrapping tube 8000 can be made of PVC material and wrapped around the outside of the inner catheter 1000 through a heat shrinkage process, so good sealing performance can be ensured. The proximal end of the wrapping tube 8000 is hermetically connected to the distal end of the multi-lumen tube 6000. The distal end of the transmission wire 4100 can pass through the distal end of the multi-lumen tube 6000 and then be hermetically inserted between the wrapping tube 8000 and the inner catheter 1000. The wrapping tube 8000 is used for sealing to avoid direct contact with blood. When the guiding element 5000 is arranged at the distal end of the inner catheter 1000, the distal end of the wrapping tube 8000 will also be hermetically connected to the proximal end of the guiding element 5000, and the distal end of the transmission wire 4100 continues to be introduced into the guiding element 5000 and connected to the light-emitting element 4000. Therefore, the transmission wire 4100 will be hermetically received in the second inner cavity channel 6000b, the wrapping tube 8000 and the guiding element 5000 from the proximal end to the distal end to avoid direct contact with blood.

[0075] As Figure 10 shown, the present application also provides a delivery system, which includes a delivery assembly, an implant, a guiding wire 2000, etc. The guiding wire 2000 can be movably inserted into the catheter inner cavity of the inner catheter 1000 to serve as a guide for introducing the delivery system into the target blood vessel. The implant can be retracted between the outer sheath tube 3000 and the inner catheter 1000. Since the specific structure, functional principle and technical effect of the delivery assembly have been described in detail above, they will not be elaborated here. Any technical content regarding the delivery assembly can refer to the above text.

[0076] Regarding the fabrication of the delivery system, one embodiment can be referred to as follows:

[0077] The light-emitting element 4000 and the guiding element 5000 are fixed on the inner catheter 1000 through injection molding or gluing processes. The multi-lumen tube 6000 and the inner catheter 1000 are fixedly connected together through a gluing process. The reinforcing tube 7000 is sleeved outside the multi-lumen tube 6000, and the reinforcing tube 7000 and the multi-lumen tube 6000 are fixedly connected together through processes such as gluing or ring pressing. The transmission wire 4100 passes through the second inner cavity channel 6000b of the multi-lumen tube 6000, and the transmission wire 4100 is connected to the control component 4200. The wrapping tube 8000 is wrapped outside the inner catheter 1000. The distal end of the wrapping tube 8000 overlaps with the proximal end of the guiding element 5000, and the proximal end of the wrapping tube 8000 overlaps with the distal end of the double-lumen tube. The wrapping tube 8000 wraps the transmission wire 4100 outside the inner catheter 1000 through processes such as hot melting, and seals in the areas overlapping with the guiding element 5000 and the double-lumen tube to prevent the transmission wire 4100 from contacting the blood. The outer sheath tube 3000 is sleeved on the outside of the inner catheter 1000 from the proximal end of the inner catheter 1000. The holding element 1100 is inserted from the proximal end of the reinforcing tube 7000, and the holding element 1100 is connected to the reinforcing tube 7000 through connection methods such as gluing or threading. The control component 4200 is installed on the holding element 1100 and connected to the transmission wire 4100. The system tail connection element 1200 is installed on the proximal end of the inner catheter 1000 by gluing, facilitating the introduction of the guiding wire 2000 and emptying for use. The implant is constrained outside the inner catheter 1000 by means such as tying or pulling to complete the fabrication of the delivery system.

[0078] In some of these embodiments, the operating method of the delivery system of the present application may include:

[0079] Taking a thoracic aortic surgery as an example, as Figure 10 shown, during the operation, if the surgeon needs to place an implant into the left common carotid artery, in the state of not completely freeing the blood vessel, first introduce the guiding wire 2000 into the blood vessel where the implant needs to be released, remove the delivery system and turn on the light-emitting element 4000. The delivery system is introduced along the guiding wire 2000 into the target blood vessel, and the positioning light spot at the distal end position of the delivery system can be seen from the outer surface of the target blood vessel. The positioning light spot on the outer surface of the target blood vessel moves as the implant moves during the implant introduction process.

[0080] In some other embodiments, the operator can also adjust the position of the positioning light spot on the outer surface of the target blood vessel by slightly rotating the delivery system, so that the light-emitting element 4000 faces the operator, improving the clarity of the positioning light spot. After the positioning light spot reaches the predetermined implant release position (i.e., the position in the target blood vessel that needs to be treated), the outer sheath tube 3000 is pulled back to achieve the precise release function of the implant. After releasing the implant, the delivery system is withdrawn and the light-emitting element 4000 is turned off.

[0081] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0082] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A conveying component, characterized in that, The delivery assembly includes: An inner catheter having a through catheter lumen inside for threading a guiding wire; An outer sheath having a through sheath lumen inside. The outer sheath is movably sleeved outside the inner catheter, and at least a part of the tube layer gap between the outer sheath and the inner catheter is used for accommodating an implant; A light-emitting element provided on at least one of the inner catheter and the outer sheath. The light-emitting element can form a positioning light spot through the blood vessel wall of the target blood vessel.

2. The conveying assembly according to claim 1, wherein, The light-emitting element is used to project positioning light. The projection direction of the positioning light has an angle with the axial direction of the inner catheter for forming a positioning light spot on the blood vessel wall of the target blood vessel; and / or, The light-emitting element is provided at the distal end of the inner catheter; and / or, The number of the light-emitting elements is multiple, and the multiple light-emitting elements are arranged along the circumferential direction of the inner catheter; and / or, The light-emitting element is a laser lamp, and the positioning light is a laser ray; and / or, The color of the positioning light is blue; and / or, The light-emitting element has the ability to focus light; and / or, The projection direction of the positioning light is perpendicular to the axial direction of the inner catheter; and / or, The outer surface of the outer sheath has a hydrophilic coating; and / or, The diameter of the positioning light spot is smaller than the diameter of the implant in the contracted state.

3. The conveying assembly according to claim 2, characterized in that, The delivery assembly includes: A guiding element provided at the distal end of the inner catheter. The guiding element has a through guiding channel inside. The guiding channel is communicated with the catheter lumen. A positioning channel communicating with the guiding channel is opened on the side wall of the guiding element. The light-emitting element is provided in the positioning channel and projects the positioning light out through the positioning channel.

4. The conveying assembly according to claim 3, characterized in that, The positioning channel includes a positioning groove on the inner wall of the guiding channel and a projection window penetrating the side wall of the guiding element. The projection window is communicated with the positioning groove. The light-emitting element is provided in the positioning groove and is used to project the positioning light through the projection window.

5. The conveying assembly according to claim 4, wherein The shape of the projection window is one of a circle, an ellipse, a rectangle, and a polygon; and / or, The guiding element has a distal guiding section and a proximal guiding section. The outer contour diameter of the distal guiding section gradually increases in the direction from the distal end to the proximal end. The outer contour diameter of the proximal guiding section gradually decreases in the direction from the distal end to the proximal end. The projection window is located between the distal guiding section and the proximal guiding section.

6. The conveying assembly according to claim 1, wherein The delivery assembly includes: A multi-lumen tube having a first inner cavity channel and at least one second inner cavity channel that penetrate along its own axial direction. The multi-lumen tube is fixedly sleeved outside the inner catheter through the first inner cavity channel, and the outer sheath is movably sleeved outside the multi-lumen tube; A transmission wire is threaded in the second inner cavity channel for electrically connecting the light-emitting element and a control component, and the control component is used to control the operation of the light-emitting element.

7. The conveying assembly according to claim 6, wherein The multi-lumen tube includes a distal section of the lumen tube and a proximal section of the lumen tube that are connected to each other, and the tube body strength of the distal section of the lumen tube is less than the tube body strength of the proximal section of the lumen tube; or, The multi-lumen tube includes a distal section of the lumen tube and a proximal section of the lumen tube that are connected to each other, and a reinforcing tube is sleeved outside the proximal section of the lumen tube of the multi-lumen tube.

8. The conveying assembly according to claim 6, wherein The delivery assembly includes: A wrapping tube, the distal region of the inner catheter protrudes from the distal end of the multi-lumen tube, the wrapping tube is sleeved outside the distal region of the inner catheter, the proximal end of the wrapping tube is hermetically connected to the distal end of the multi-lumen tube, and the distal end of the transmission wire is hermetically inserted between the wrapping tube and the inner catheter and is electrically connected to the light-emitting element; and / or, A holding element, the interior of the holding element has a through assembly channel, the holding element is sleeved outside the inner catheter and the multi-lumen tube through the assembly channel, and an assembly chamber communicating with the assembly channel is formed on the side wall of the holding element.

9. The conveying assembly according to claim 1, characterized in that The delivery assembly includes: A system tail connection element, the system tail connection element is arranged at the proximal end of the inner catheter and is used for intraoperative exhaust and threading of a guide wire; and / or, A proximal retraction element, the proximal retraction element is arranged at the proximal end of the outer sheath tube, and the proximal retraction element is a conical structure.

10. A conveying system, characterized in that, The delivery system includes the delivery assembly according to any one of claims 1-9.

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