Conveying device and conveying system with same

Abstract

The invention discloses a conveying device and a conveying system with the same. The conveying device comprises an outer sheath tube, a sheath core, a preset guide wire and a fixator, a first cavity is defined by the sheath core, the first cavity penetrates through the sheath core in the extending direction of the sheath core, the sheath core is sleeved with the outer sheath tube, the outer sheath tube and the sheath core jointly define a second cavity, and the outer sheath tube can move in the extending direction of the sheath core relative to the sheath core; the preset guide wire is detachably connected with the fixator and penetrates through the second cavity, and the fixator is detachably connected with the sheath core. By arranging the preset guide wire and the fixator which are detachably connected and the fixator and the sheath core which are detachably connected, reconstruction of branch blood vessels can be completed through the preset guide wire, supporting force can be provided for the preset guide wire through the sheath core so that super-selection operation can be completed, the preset guide wire is not prone to being separated from a preset position, the preset guide wire can also play a role in stretching, and the operation efficiency is improved. In addition, the preset guide wire can be conveniently pulled out of the blood vessel, so that the operation difficulty can be reduced, the operation time is shortened, and the operation success rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of endovascular aortic treatment, and particularly to a delivery device and a delivery system having the same. Background Art

[0002] At present, for aortic-related diseases (such as aortic dissection, aortic aneurysm, etc.), except for Stanford type A dissection which still requires surgical treatment, endovascular repair with aortic covered stents is the main treatment method. For lesions involving supra-aortic branches (brachiocephalic trunk, left common carotid artery, left subclavian artery), visceral branches (celiac trunk artery, superior mesenteric artery, renal artery), and internal iliac artery, there are related complications after occlusion of the branch vessels, which can lead to death or disability, and are the key problems restricting endovascular aortic treatment technology. Taking the iliac artery branch as an example, 20%-30% of patients with abdominal aortic aneurysm are complicated with common iliac artery aneurysm. The traditional treatment is to embolize the internal iliac artery to ensure the isolation effect of the aneurysm. The consequences are that the probability of gluteal muscle ischemia reaches 30%-55%, male sexual dysfunction is 46%, and there are also risks such as paraplegia, intestinal ischemia, lumbosacral plexus lesions, and bladder or rectal sphincter dysfunction. Therefore, reconstruction of aortic branch vessels has become the development direction of endovascular treatment.

[0003] Currently, the main branch vessel reconstruction techniques include hybrid surgery, parallel stent technique, fenestration technique, branched stent technique, etc. The hybrid technique has large trauma and some patients cannot tolerate the surgery. The advantage of the parallel stent technique is that it is simple and easy to operate and has a low price, but there is a risk of type I endoleak due to the gap between the stents, and at the same time, the patency rate is reduced due to the mutual extrusion of the stents. The fenestration technique includes customized stents, pre-fenestration and in-situ fenestration techniques. The customized stents are expensive and time-consuming, and there is a possibility of damaging the stent structure in both pre-fenestration and in-situ fenestration, increasing the uncertainty of the treatment effect. Branched stents can fully cover aortic lesions and reconstruct branch vessels through 1-3 bifurcated stents, and are currently the most reasonable endovascular solution for aortic branch involvement.

[0004] In related technologies, the aortic branched stent needs to select its bifurcated stent into the branch vessel to complete the vascular reconstruction, but currently there is a problem of difficult selection, resulting in a large surgical difficulty, a long surgical time, and an increased risk of surgical failure. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a delivery device which is convenient for performing superselective operation and can reduce the surgical difficulty.

[0006] The present invention further provides a delivery system having the above delivery device.

[0007] The delivery device according to an embodiment of the present invention includes: an outer sheath tube and a sheath core. The sheath core defines a first cavity, and the first cavity penetrates the sheath core along the extending direction of the sheath core. The outer sheath tube is sleeved on the sheath core and jointly defines a second cavity with the sheath core. The outer sheath tube can move relative to the sheath core along the extending direction of the sheath core; a pre-set guide wire and a fixator. The pre-set guide wire is detachably connected to the fixator and passes through the second cavity, and the fixator is detachably connected to the sheath core.

[0008] The delivery device according to an embodiment of the present invention, by providing a pre-set guide wire detachably connected to the fixator and a fixator detachably connected to the sheath core, can complete the reconstruction of branch blood vessels through the pre-set guide wire, and can provide a supporting force for the pre-set guide wire through the sheath core to facilitate the completion of the super-selective operation and prevent the pre-set guide wire from easily deviating from the preset position. The pre-set guide wire can also play a stretching role. In addition, the pre-set guide wire is convenient to be withdrawn from the blood vessel, thereby reducing the surgical difficulty, shortening the surgical time, and being beneficial to improving the surgical success rate.

[0009] According to some embodiments of the present invention, one end of the pre-set guide wire close to the fixator has a first external thread, the fixator is formed with a first mounting hole, and the inner wall of the first mounting hole has a first internal thread that can cooperate with the first external thread.

[0010] According to some embodiments of the present invention, the fixator is formed with an avoidance through-hole, a buckle is formed at the proximal end of the fixator, and the distal end of the pre-set guide wire passes through the avoidance hole and is snap-connected to the buckle.

[0011] According to some embodiments of the present invention, the fixator is formed with a snap-in groove, and the snap-in groove is in snap-fit connection with the sheath core.

[0012] According to some embodiments of the present invention, the fixator is formed with a second mounting hole, the sheath core has a second external thread, and the inner wall of the second mounting hole has a second internal thread that can cooperate with the second external thread.

[0013] According to some embodiments of the present invention, the pre-set guide wires and the fixators are all multiple and correspond one by one; or the pre-set guide wires and the fixators are all multiple, and the number of the pre-set guide wires is greater than the number of the fixators, and each fixator corresponds to at least one pre-set guide wire.

[0014] According to some embodiments of the present invention, the delivery device further includes: a sheath tube handle. The sheath tube handle is sleeved on the outer sheath tube, and the sheath tube handle can drive the outer sheath tube to move along the extending direction of the sheath core.

[0015] According to some embodiments of the present invention, the delivery device further includes: a guiding head disposed at the distal end of the sheath core, and the guiding head has a third cavity communicating with the first cavity. From the distal end to the proximal end of the guiding head, the cross-sectional area of the guiding head gradually increases.

[0016] According to some embodiments of the present invention, the delivery device further includes: a push rod and a push rod handle. The push rod is sleeved on the sheath core and at least partially received in the second cavity. The push rod handle is sleeved on the sheath core and fixed to the proximal end of the push rod. The push rod can move relative to the sheath core and the outer sheath tube along the extending direction of the sheath core, and the push rod handle can lock the push rod and the sheath core.

[0017] The delivery system according to an embodiment of the present invention includes the delivery device and the implant of the above embodiments. The implant is received in the second cavity, and the delivery device is used to deliver the implant into the human body.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a delivery device according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the cooperation of a pre-set guide wire, a fixator and an implant according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the cooperation of a pre-set guide wire and a fixator according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the cooperation of a pre-set guide wire and a fixator from another angle according to an embodiment of the present invention.

[0024] REFERENCE SIGNS:

[0025] outer sheath tube 1; sheath core 2; pre-set guide wire 3;

[0026] fixator 4; clamping groove 41;

[0027] sheath tube handle 5; guiding head 6;

[0028] first cavity 71; second cavity 72;

[0029] push rod handle 8; hemostatic valve 9;

[0030] Delivery device 10; implant 20. Specific embodiments

[0031] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0032] Reference will be made below Figures 1 - 4 to describe the delivery device 10 according to an embodiment of the present invention and a delivery system having the same.

[0033] As Figures 1 - 4 shown, the delivery device 10 according to an embodiment of the present invention includes: an outer sheath 1, a sheath core 2, a pre-set guide wire 3, and a fixator 4. The sheath core 2 defines a first cavity 71, and the first cavity 71 penetrates the sheath core 2 along the extending direction of the sheath core 2. The outer sheath 1 is sleeved on the sheath core 2 and jointly defines a second cavity 72 with the sheath core 2. The outer sheath 1 can move relative to the sheath core 2 along the extending direction of the sheath core 2. The pre-set guide wire 3 is detachably connected to the fixator 4 and penetrates through the second cavity 72, and the fixator 4 is detachably connected to the sheath core 2.

[0034] Among them, the delivery device 10 can be used to deliver the implant 20 to a preset position. The implant 20 can be a branched stent. The delivery device 10 can deliver the implant 20 into a target blood vessel and can reconstruct the branched blood vessel for endovascular treatment of related aortic diseases.

[0035] A part of the structure of the delivery device 10 can extend into the target blood vessel. The sheath core 2 of the delivery device 10 can be configured as a hollow tubular structure. The sheath core 2 defines a first cavity 71, and the first cavity 71 penetrates the sheath core 2 along the extending direction of the sheath core 2. The outer sheath 1 can be configured as a hollow tubular structure. The outer sheath 1 is sleeved on the sheath core 2 and jointly defines a second cavity 72 with the sheath core 2. The implant 20 can be located in the second cavity 72. The outer sheath 1 can move relative to the sheath core 2 along the extending direction of the sheath core 2 to expose the implant 20. When the implant 20 is located in the second cavity 72, the implant 20 is in a compressed state. After the delivery device 10 extends into the blood vessel and delivers the implant 20 to the preset position, the outer sheath 1 can be moved proximally along the extending direction of the sheath core 2 to expose the implant 20. The implant 20 can be deployed (the implant 20 can be a shape memory metal) to form a blood flow channel, and the blood flow channel allows blood to flow through to reconstruct the blood vessel.

[0036] As some embodiments of the present invention, before the delivery device 10 is inserted into the target blood vessel, a partial structure of the guide member needs to be inserted into the target blood vessel first. The guide member can be configured as a filament structure with a smaller shaft diameter. The guide member can be inserted into the first cavity 71. The guide member can be deformed and have a certain structural strength. The guide member can be understood as a guide wire. The sheath core 2 can be sleeved on the guide member, and the delivery device 10 can be moved into the blood vessel along the extension direction of the guide member, so that a partial structure of the delivery device 10 is inserted into the blood vessel until the distal end of the delivery device 10 reaches the preset position of the blood vessel. By providing the guide member, it is convenient to introduce the delivery device 10 into the blood vessel.

[0037] The pre-set guide wire 3 can be configured as a filament structure, and the pre-set guide wire 3 is detachably connected to the fixator 4. As some embodiments of the present invention, the pre-set guide wire 3 can be threadedly connected to the fixator 4. As some other embodiments of the present invention, the pre-set guide wire 3 can be snap-connected to the fixator 4. The pre-set guide wire 3 passes through the second cavity 72. The pre-set guide wire 3 can be inserted into the target blood vessel along with the sheath core 2. The pre-set guide wire 3 is used for vascular super-selection. The pre-set guide wire 3 can guide the branch structure of the implant 20 into the branch blood vessel to complete the reconstruction of the branch blood vessel. After the vascular super-selection and reconstruction are completed, the pre-set guide wire 3 can be withdrawn from the blood vessel. By making the pre-set guide wire 3 detachably connected to the fixator 4, when it is not possible to smoothly withdraw the pre-set guide wire 3 due to anatomical factors, the pre-set guide wire 3 can be detached from the fixator 4 to withdraw the pre-set guide wire 3 in the reverse direction, so that the operation can proceed smoothly.

[0038] The fixator 4 is detachably connected to the sheath core 2. As some embodiments of the present invention, the fixator 4 can be threadedly connected to the sheath core 2. As some other embodiments of the present invention, the fixator 4 can be snap-connected to the sheath core 2. By making the pre-set guide wire 3 detachably connected to the fixator 4 and the fixator 4 detachably connected to the sheath core 2, the pre-set guide wire 3 can be fixed on the sheath core 2 when needed during the operation. The sheath core 2 can provide a supporting force to the pre-set guide wire 3 to avoid the phenomenon of the pre-set guide wire 3 floating, so that the pre-set guide wire 3 can enter the target branch blood vessel according to the preset plan for branch blood vessel super-selection, and the pre-set guide wire 3 is not easily displaced, so as to play a guiding role in the deployment of the branch stent, reduce the operation difficulty, reduce unnecessary time waste (re-super-selection), simplify the operation process, improve the operation success rate, and improve the operation effect. When facing difficult anatomical (vascular tortuosity, poor angle, etc.) lesions, the fixator 4 can be detached from the sheath core 2 and the pre-set guide wire 3 can be pulled to play the role of stretching the guide wire, so as to reduce the operation difficulty and be beneficial to improving the operation success rate.

[0039] In the above embodiments, by providing a detachable connection between the pre-set guide wire 3 and the fixator 4, and a detachable connection between the fixator 4 and the sheath core 2, the reconstruction of the branch blood vessel can be completed through the pre-set guide wire 3. Moreover, the sheath core 2 can provide a supporting force to the pre-set guide wire 3 to facilitate the super-selective operation, and prevent the pre-set guide wire 3 from easily deviating from the preset position. The pre-set guide wire 3 can also play a stretching role. In addition, the pre-set guide wire 3 is convenient to be withdrawn from the blood vessel, thereby reducing the surgical difficulty, shortening the operation time, and being beneficial to improving the surgical success rate.

[0040] In some embodiments of the present invention, one end of the pre-set guide wire 3 close to the fixator 4 has a first external thread, and the fixator 4 is formed with a first mounting hole, and the inner wall of the first mounting hole has a first internal thread that can cooperate with the first external thread.

[0041] Among them, the pre-set guide wire 3 can be threadedly connected to the fixator 4. One end of the pre-set guide wire 3 close to the fixator 4 can have a first external thread, the fixator 4 can be formed with a first mounting hole, the inner wall of the first mounting hole can have a first internal thread, and the first external thread can be threadedly connected with the first internal thread so that the pre-set guide wire 3 is threadedly connected to the fixator 4, so that the pre-set guide wire 3 is detachably connected to the fixator 4. By making the pre-set guide wire 3 and the fixator 4 detachable, if it is not possible to smoothly withdraw the pre-set guide wire 3 due to anatomical factors, the pre-set guide wire 3 can be detached from the fixator 4 to withdraw the pre-set guide wire 3 in the reverse direction, so that the operation can proceed smoothly, which is beneficial to improving the surgical success rate. Moreover, such a setting facilitates the disassembly and assembly of the pre-set guide wire 3 and the fixator 4, and is simple and reliable to use.

[0042] In some embodiments of the present invention, the fixator 4 is formed with an avoidance through-hole, and a buckle is formed at the proximal end of the fixator 4. The distal end of the pre-set guide wire 3 passes through the avoidance hole and is clamped with the buckle.

[0043] Among them, the pre-set guide wire 3 can be clamped and connected to the fixator 4. The fixator 4 can be formed with an avoidance through-hole, a buckle can be formed at the proximal end of the fixator 4, and the distal end of the pre-set guide wire 3 can pass through the avoidance hole and be clamped with the buckle, so that the pre-set guide wire 3 is clamped and connected to the fixator 4, so that the pre-set guide wire 3 is detachably connected to the fixator 4. By making the pre-set guide wire 3 and the fixator 4 detachable, if it is not possible to smoothly withdraw the pre-set guide wire 3 due to anatomical factors, the pre-set guide wire 3 can be detached from the fixator 4 to withdraw the pre-set guide wire 3 in the reverse direction, so that the operation can proceed smoothly, which is beneficial to improving the surgical success rate.

[0044] In some embodiments of the present invention, as Figure 4 shown, the fixator 4 is formed with a clamping groove 41, and the clamping groove 41 is in clamping cooperation with the sheath core 2.

[0045] Among them, the fixator 4 can be formed with a clamping groove 41, and the spatial shape defined by the clamping groove 41 can be adapted to the cross-sectional shape of the sheath core 2, so that the fixator 4 can be clamped to the sheath core 2 through the clamping groove 41, and the pre-set guide wire 3 can be fixedly connected to the sheath core 2 through the fixator 4. The sheath core 2 can provide a supporting force to the pre-set guide wire 3, so that the pre-set guide wire 3 can follow the sheath core 2 into the target branch blood vessel for super-selection of the branch blood vessel, and the pre-set guide wire 3 is not easily detached, so as to play a guiding role in the deployment of the branch stent, reduce the surgical operation difficulty, reduce unnecessary time waste (re-super-selection), simplify the surgical procedure, improve the surgical success rate, and improve the surgical effect. And the fixator 4 and the sheath core 2 are detachable. When facing anatomical difficulties (such as blood vessel distortion, poor angle, etc.) lesions, the fixator 4 can be detached from the sheath core 2 and the pre-set guide wire 3 can be pulled to play the role of stretching the guide wire, so as to reduce the surgical difficulty and is beneficial to improving the surgical success rate.

[0046] In some embodiments of the present invention, the fixator 4 is formed with a second mounting hole, the sheath core 2 has a second external thread, and the inner wall of the second mounting hole has a second internal thread capable of cooperating with the second external thread.

[0047] Among them, the fixator 4 can be formed with a second mounting hole, the inner wall of the second mounting hole has a second internal thread, the sheath core 2 can have a second external thread, and the second internal thread can be in threaded cooperation with the second external thread, so that the fixator 4 can be connected to the sheath core 2 in a threaded manner, and the pre-set guide wire 3 can be fixedly connected to the sheath core 2 through the fixator 4. The sheath core 2 can provide a supporting force to the pre-set guide wire 3, so that the pre-set guide wire 3 can follow the sheath core 2 into the target branch blood vessel for super-selection of the branch blood vessel, and the pre-set guide wire 3 is not easily detached, so as to play a guiding role in the deployment of the branch stent, reduce the surgical operation difficulty, reduce unnecessary time waste (re-super-selection), simplify the surgical procedure, improve the surgical success rate, and improve the surgical effect. And the fixator 4 and the sheath core 2 are detachable. When facing anatomical difficulties (such as blood vessel distortion, poor angle, etc.) lesions, the fixator 4 can be detached from the sheath core 2 and the pre-set guide wire 3 can be pulled to play the role of stretching the guide wire, so as to reduce the surgical difficulty and is beneficial to improving the surgical success rate.

[0048] In some embodiments of the present invention, both the pre-set guide wire 3 and the fixator 4 are multiple and in one-to-one correspondence, or both the pre-set guide wire 3 and the fixator 4 are multiple, and the number of the pre-set guide wires 3 is greater than the number of the fixators 4, and each fixator 4 corresponds to at least one pre-set guide wire 3.

[0049] Among them, both the pre-set guide wire 3 and the fixator 4 are multiple and have the same number. The multiple pre-set guide wires 3 can be fixedly connected to the multiple fixators 4 in a one-to-one correspondence. The pre-set guide wires 3 can be respectively introduced into different branch blood vessels to cooperate with the multi-branch branch stent for use in treating the multi-branch aorta, which is beneficial to simplifying the surgical procedure, saving surgical time, and further improving the surgical success rate.

[0050] Alternatively, there are multiple pre-set guide wires 3 and multiple fixators 4, and the number of pre-set guide wires 3 is greater than the number of fixators 4. Each fixator 4 corresponds to at least one pre-set guide wire 3, so that at least one fixator 4 is connected to multiple pre-set guide wires 3, and the multiple pre-set guide wires 3 are integrally fixed to the fixator 4, reducing the relative number of fixators 4, reducing the number of components of the delivery device 10, reducing the space occupied by the fixator 4, enabling miniaturized design, and saving manufacturing costs.

[0051] As some embodiments of the present application, a radiopaque ring is provided at the proximal end of the outer sheath tube 1 for precise proximal positioning.

[0052] In some embodiments of the present invention, as Figure 1 shown, the delivery device 10 further includes: a sheath handle 5. The sheath handle 5 is sleeved on the outer sheath tube 1, and the sheath handle 5 can drive the outer sheath tube 1 to move along the extension direction of the sheath core 2.

[0053] Among them, the sheath handle 5 can be configured as a hollow tubular structure. The sheath handle 5 can be sleeved on the outer sheath tube 1. The sheath handle 5 is located outside the blood vessel. A doctor (operator) can operate the sheath handle 5 (pull or rotate) to drive the outer sheath tube 1 to move proximally along the extension direction of the sheath core 2. During the movement of the outer sheath tube 1, the implant 20 gradually breaks free from the restraint of the outer sheath tube 1 and is gradually exposed outside the delivery device 10. The implant 20 can be deployed to form a blood flow path. The blood flow path allows blood to flow through to reconstruct the blood vessel. By providing the sheath handle 5, after the delivery device 10 reaches the designated position in the blood vessel, it is convenient to deploy the implant 20 according to the surgical preset procedure to achieve the effect of reconstructing the blood vessel.

[0054] As some embodiments of the present invention, a hemostatic valve 9 can be provided on the sheath handle 5 for hemostasis.

[0055] In some embodiments of the present invention, as Figure 1 shown, the delivery device 10 further includes: a guiding head 6. The guiding head 6 is provided at the distal end of the sheath core 2, and the guiding head 6 has a third cavity communicating with the first cavity 71. From the distal end to the proximal end of the guiding head 6, the cross-sectional area of the guiding head 6 gradually increases.

[0056] Among them, the guiding head 6 can be arranged at the distal end of the sheath core 2. The guiding head 6 has a third cavity communicating with the first cavity 71. The third cavity penetrates the guiding head 6 along the extending direction of the guiding head 6, and the guiding member can extend into the third cavity. Before the delivery device 10 is delivered into the blood vessel, the proximal end of the guiding member can be first extended into the third cavity, so that the guiding member guides the moving direction of the delivery device 10 and pushes the delivery device 10 until the implant 20 is delivered to a preset position in the blood vessel. From the distal end to the proximal end of the guiding head 6, the cross-sectional area of the guiding head 6 gradually increases, so that the guiding head 6 is configured as a conical head. Such a setting can reduce the resistance from the blood vessel and blood during the process of the guiding head 6 extending into the blood vessel, facilitate the smooth introduction of the guiding head 6, reduce the time required for the operation, and is beneficial to improving the success rate of the operation.

[0057] In some embodiments of the present invention, as Figure 1 shown, the delivery device 10 further includes: a push rod and a push rod handle 8. The push rod is sleeved on the sheath core 2 and at least partially received in the second cavity 72. The push rod handle 8 is sleeved on the sheath core 2 and fixed to the proximal end of the push rod. The push rod can move relative to the sheath core 2 and the outer sheath tube 1 along the extending direction of the sheath core 2, and the push rod handle 8 can lock the push rod and the sheath core 2.

[0058] Among them, the push rod can be sleeved on the sheath core 2 and at least partially received in the second cavity 72. The push rod handle 8 is sleeved on the sheath core 2 and fixed to the proximal end of the push rod. The push rod handle 8 can lock the push rod and the sheath core 2 so that the push rod and the sheath core 2 move together. As some embodiments of the present invention, during the process of the delivery device 10 entering the preset position of the target blood vessel, the push rod handle 8 can lock the push rod and the sheath core 2. After the delivery device 10 enters the preset position of the target blood vessel, the doctor can hold the push rod and pull the sheath tube handle 5 proximally at the same time to expose the implant 20 outside the delivery device 10 until the implant 20 is fully deployed at the preset position. After that, the doctor can operate the push rod handle 8 to unlock the push rod and the sheath core 2 and make the push rod abut against the guiding head 6. Then, the doctor can operate the push rod handle 8 to lock the push rod and the sheath core 2. The doctor can hold the sheath tube handle 5 and pull the push rod proximally at the same time to pull at least part of the guiding head 6 into the outer sheath tube 1, aiming to reduce the risk of the guiding head 6 rubbing against the blood vessel when the delivery device 10 is withdrawn from the blood vessel, so that the delivery device 10 can be smoothly withdrawn, and can reduce unnecessary harm to the patient, so as to improve the success rate of the operation.

[0059] The delivery system according to an embodiment of the present invention includes the delivery device 10 and the implant 20 of the above embodiment. The implant 20 is received in the second cavity 72, and the delivery device 10 is configured to deliver the implant 20 into the human body. By providing the detachable connection between the pre-set guide wire 3 and the fixator 4, and the detachable connection between the fixator 4 and the sheath core 2, the reconstruction of the branched blood vessels can be completed through the pre-set guide wire 3. Moreover, the sheath core 2 can provide a supporting force to the pre-set guide wire 3 to facilitate the super-selective operation and prevent the pre-set guide wire 3 from easily deviating from the preset position. The pre-set guide wire 3 can also play a stretching role. In addition, the pre-set guide wire 3 is convenient to be withdrawn from the blood vessel, thereby reducing the surgical difficulty, shortening the operation time, and being beneficial to improving the surgical success rate.

[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention.

[0061] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0062] In the description of the present invention, the meaning of "a plurality" is two or more.

[0063] In the description of the present invention, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween.

[0064] In the description of the present invention, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature.

[0065] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A conveying device (10), characterized in that: include: An outer sheath tube (1) and a sheath core (2), wherein the sheath core (2) defines a first cavity (71), the first cavity (71) penetrates the sheath core (2) along the extension direction of the sheath core (2), the outer sheath tube (1) is sleeved on the sheath core (2) and defines a second cavity (72) together with the sheath core (2), and the outer sheath tube (1) is movable relative to the sheath core (2) along the extension direction of the sheath core (2); A pre-set guide wire (3) and a fixer (4), wherein the pre-set guide wire (3) is detachably connected to the fixer (4) and is passed through the second cavity (72), and the fixer (4) is detachably connected to the sheath core (2).

2. The conveying device (10) according to claim 1, characterized in that The end of the preset guide wire (3) close to the fixator (4) has a first external thread, the fixator (4) is formed with a first mounting hole, and the inner wall of the first mounting hole has a first internal thread capable of cooperating with the first external thread.

3. The conveying device (10) according to claim 1, characterized in that The fixator (4) is formed with an avoidance through hole, the proximal end of the fixator (4) is formed with a buckle, and the distal end of the preset guide wire (3) is passed through the avoidance hole and is engaged with the buckle.

4. The conveying device (10) according to claim 1, characterized in that The fixer (4) is formed with a snap-fit ​​groove (41), and the snap-fit ​​groove (41) is snap-fitted with the sheath core (2).

5. The conveying device (10) according to claim 1, characterized in that The fixture (4) is formed with a second mounting hole, the sheath core (2) has a second external thread, and the inner wall of the second mounting hole has a second internal thread capable of matching with the second external thread.

6. The conveying device (10) according to claim 1, characterized in that The pre-set guide wire (3) and the fixator (4) are both multiple and correspond to each other one by one; Or the preset guide wire (3) and the fixator (4) are both multiple, and the number of the preset guide wire (3) is greater than the number of the fixator (4), and each of the fixators (4) corresponds to at least one preset guide wire (3).

7. The conveying device (10) according to claim 1, characterized in that Also includes: A sheath handle (5), wherein the sheath handle (5) is sleeved on the outer sheath (1), and the sheath handle (5) can drive the outer sheath (1) to move along the extension direction of the sheath core (2).

8. The conveying device (10) according to any one of claims 1 to 7, characterized in that: Also includes: A guide head (6), wherein the guide head (6) is arranged at the distal end of the sheath core (2), and the guide head (6) has a third cavity connected to the first cavity (71), and the cross-sectional area of ​​the guide head (6) gradually increases from the distal end of the guide head (6) to the proximal end of the guide head (6).

9. The conveying device (10) according to any one of claims 1 to 7, characterized in that: Also includes: A push rod and a push rod handle (8), wherein the push rod is sleeved on the sheath core (2) and at least partially accommodated in the second cavity (72), the push rod handle (8) is sleeved on the sheath core (2) and fixed to the proximal end of the push rod, the push rod can move relative to the sheath core (2) and the outer sheath tube (1) along the extension direction of the sheath core (2), and the push rod handle (8) can lock the push rod with the sheath core (2).

10. A conveying system, characterized in that: It comprises a delivery device (10) and an implant (20) according to any one of claims 1 to 9, wherein the implant (20) is accommodated in the second cavity (72), and the delivery device (10) is used to deliver the implant (20) into the human body.

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