WO2022127357A1 - 输送装置及输送系统 - Google Patents

输送装置及输送系统 Download PDF

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Publication number
WO2022127357A1
WO2022127357A1 PCT/CN2021/125221 CN2021125221W WO2022127357A1 WO 2022127357 A1 WO2022127357 A1 WO 2022127357A1 CN 2021125221 W CN2021125221 W CN 2021125221W WO 2022127357 A1 WO2022127357 A1 WO 2022127357A1
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WO
WIPO (PCT)
Prior art keywords
movable
distal end
proximal end
assembly
face
Prior art date
Application number
PCT/CN2021/125221
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English (en)
French (fr)
Inventor
彭峰
Original Assignee
深圳市健心医疗科技有限公司
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Filing date
Publication date
Application filed by 深圳市健心医疗科技有限公司 filed Critical 深圳市健心医疗科技有限公司
Priority to EP21905286.7A priority Critical patent/EP4265223A1/en
Priority to US18/038,013 priority patent/US20230414351A1/en
Publication of WO2022127357A1 publication Critical patent/WO2022127357A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2427—Devices for manipulating or deploying heart valves during implantation
    • A61F2/2436—Deployment by retracting a sheath
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/9517—Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor

Definitions

  • the invention relates to the field of medical instruments, in particular to a delivery device and a delivery system.
  • the human heart is divided into four chambers, each with its own "exit", and four types of valves (Mitral, Aortic, Pulmonary, and Tricuspid) that ensure the Blood flows in a specified direction in the cardiovascular system.
  • the aortic valve is located between the left ventricle and the ascending aorta, and its role is to ensure that blood flow from the left ventricle can flow into the aorta in one direction, not the other way around.
  • the aortic valve opens, high-pressure blood in the ventricle flows into the aorta through the aortic valve, and then the valve closes. At this time, the blood injected into the aorta cannot flow back into the left ventricle through the aortic valve.
  • a self-expanding prosthetic valve is typically mounted on the tip of a flexible catheter in a crimped state and advanced through the patient's blood vessel or body until the prosthetic valve reaches the implantation site. The prosthetic valve is then expanded to its functional size at the site of the defective native aortic valve.
  • the usual surgical route is from the human femoral artery, and the delivery system loaded with the prosthetic valve is pushed through the aorta to the diseased valve.
  • the delivery system needs to pass through the entire aortic arch.
  • the usual practice is to reduce the outer diameter of the sheath tube as much as possible, but this often leads to the process of housing the valve in the sheath tube.
  • the amount of compression deformation is larger, so the loading force will also increase accordingly, and the sheath/sheath core of the delivery system is easily stretched or shortened during loading, and the delivery system cannot be closed after loading, resulting in difficulty or failure of the operation.
  • the present invention provides a delivery device, the delivery device includes a catheter assembly and a control mechanism, the catheter assembly includes an outer sheath tube and a sheath core, the control mechanism can control the movement of the sheath tube, the sheath core
  • the distal end is provided with a TIP head
  • the control mechanism includes a fixed component and a movable component, the movable component is arranged near the proximal end of the fixed component, and the proximal end of the sheath passes through the fixed component and communicates with the fixed component.
  • the movable component is connected, and the sheath tube can move relative to the fixed component under the control of the movable component.
  • the proximal portion of the fixed component includes a receiving portion with an opening facing the proximal end, and the receiving portion can receive the distal portion of the fixed component; or the distal portion of the movable component includes an opening facing toward the proximal end.
  • the receiving part at the distal end, the receiving part can receive the proximal part of the fixing component.
  • the outer surface of the distal end portion of the movable component or the outer surface of the proximal end portion of the fixed component is provided with a stop position, and when the end surface of the receiving portion close to the stop position and the When the stop positions abut against each other, the movable assembly does not move axially relative to the fixed assembly.
  • the movable assembly includes an elastic member and a movable member
  • the proximal end of the fixed assembly includes a receiving portion with an opening toward the proximal end or the distal end of the moving assembly includes a receiving portion with an opening toward the distal end
  • the elastic piece is arranged in the inner cavity of the accommodating part
  • the movable piece is arranged close to the elastic piece
  • the movable piece is at least partially accommodated by the accommodating part and is movably connected with the accommodating part, so that the The elastic is in compression.
  • the inner wall of the receiving portion is provided with a first limiting piece
  • the movable piece is provided with a second limiting piece
  • the first limiting piece is in contact with the second limiting piece
  • the movable member is restricted from being away from the receiving portion.
  • the movable member can move toward the bottom surface of the inner cavity of the receiving portion, so as to compress the elastic member and separate the first limiting member from the second limiting member.
  • the present invention also provides a delivery system, comprising any of the above-mentioned delivery devices and an implant, wherein the implant can be loaded in the outer sheath.
  • the distal end surface of the outer sheath is abutted against the proximal end surface of the TIP head, and the distal end surface of the movable component is in contact with the proximal end surface of the TIP head.
  • the distance between the proximal end faces of the fixation assembly is shorter than the distance between the distal end face of the movable assembly and the proximal end face of the fixation assembly before loading the implant.
  • the fixed assembly further includes a moving track
  • the moving assembly includes an operating portion
  • the operating portion has an inner cavity
  • the movable track passes through the inner cavity of the operating portion
  • the operating portion Axially movable relative to the stationary assembly along the movable track.
  • the operating portion when the first limiting member is separated from the second limiting member, the operating portion can be further moved toward the distal end.
  • the movable component and the fixed component are arranged, and before the implant is not loaded, the distal end face of the movable component and the proximal end face of the fixed component are separated, so as to provide a section of the outer sheath that can be
  • the compression stroke solves the problem that when the outer sheath of the delivery device is loaded with the implant, the outer sheath is shortened or the sheath core is elongated, which causes the distal end of the outer sheath to be unable to close with the TIP head after the implant is loaded.
  • FIG. 1 is a schematic diagram of the overall structure of a conveying device according to an embodiment of the present invention.
  • FIG. 2 is an enlarged schematic view of a part of the structure of the conveying device shown in FIG. 1;
  • FIG. 3 is an exploded view of the partial structure of the control mechanism of the conveying device shown in FIG. 1;
  • FIG. 4 is a combined view of the partial structure of the control mechanism shown in FIG. 3;
  • FIG. 5 is a schematic cross-sectional view of a partial structure of the control mechanism shown in FIG. 4;
  • FIG. 6 is a cross-sectional exploded schematic view of a part of the structure of the control mechanism shown in FIG. 5;
  • Figure 7.1 is a schematic diagram of a partial cross-sectional structure of the conveying device shown in Figure 1;
  • Figure 7.2 is an enlarged schematic diagram of part of the structure of Figure 7.1;
  • FIG. 8 is a schematic structural diagram of a conveying device in a conveying system according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a delivery system according to an embodiment of the present invention, which is a process state of the delivery device shown in FIG. 8 loading an implant;
  • FIG. 10 is a schematic structural diagram of the conveying system shown in FIG. 9 after the loading is completed;
  • FIG. 11 is a schematic cross-sectional structural diagram of a control mechanism of a conveying device according to another embodiment of the present invention.
  • Fig. 12 is a partial cross-sectional structural diagram of the control mechanism of the conveying device shown in Fig. 11;
  • FIG. 13 is a schematic cross-sectional structural diagram of a control mechanism of a conveying device according to another embodiment of the present invention.
  • FIG. 14 is a schematic cross-sectional structural diagram of a control mechanism of a conveying device according to still another embodiment of the present invention.
  • the end close to the operator is defined as the proximal end, and the end away from the operator is defined as the distal end, and this is used to describe the proximal and distal ends of a component, as well as the relative positional relationship between components.
  • the delivery device 100 of this embodiment includes a control mechanism 10 and a catheter assembly 20 .
  • the operator can control the movement of the catheter assembly 20 through the control mechanism 10 .
  • the catheter assembly 20 includes an outer sheath tube 21 and a sheath core 22 .
  • the outer sheath tube 21 is a hollow tube body with an inner cavity, and the sheath core 22 is passed through the inner cavity of the outer sheath tube 21 .
  • the distal end of the sheath core 22 is provided with a TIP head 23, the TIP head 23 is a tapered structure with an outer diameter tapering toward the distal end, and is made of a polymer material to guide the movement of the delivery device in the blood vessel.
  • the outer sheath tube 21 can be close to or away from the TIP head 23 under the control of the control mechanism 11. When the distal end face of the outer sheath tube 21 is in contact with the proximal end face of the TIP head 23, the outer sheath tube 21 is blocked by the TIP head 23, Cannot move further towards the far end.
  • the control mechanism 10 includes a fixed component 11 and a movable component 12 .
  • the fixed component 11 and the movable component 12 are arranged adjacent to each other, and the movable component 12 is arranged close to the proximal end of the fixed component 11 .
  • the proximal end of the outer sheath 21 is connected to the movable assembly 12 after passing through the fixed assembly 11, and can move relative to the fixed assembly 11 and the sheath core 22 under the control of the movable assembly 12.
  • the proximal end surfaces of the TIP heads 23 are in contact with each other, the distal end surface of the movable component 12 is separated from the proximal end surface of the fixed component 11 , that is, there is no contact between the two.
  • the fixing assembly 11 includes a handle portion 112 and a mounting seat 111 .
  • both the handle portion 112 and the mounting seat include a hollow shell with openings at both ends, and the mounting seat 111 is disposed in the cavity of the handle portion 112 and is fixed relative to the handle portion 112 .
  • the mounting seat 111 and the hand-held portion 112 can be connected in various ways.
  • grooves can be provided on the outer surface of the mounting seat 111.
  • the inner surface of the hand-held portion 112 can be provided with ribs that match the grooves.
  • the snap connection of the groove realizes the relative fixation of the mounting seat 111 and the hand-held portion 112 .
  • the hand-held portion can be assembled by two pieces of shells, or can be integrally processed.
  • the mounting seat 111 can also be formed by splicing at least two parts of the housing, or integrally processed.
  • the mount 111 includes a middle portion 1111 with a reduced outer diameter, a proximal portion 1112 disposed at the proximal end of the middle portion 1111 , and a distal portion 1113 disposed at the distal end of the middle portion 1111 .
  • the outer diameter of the middle portion 1111 and the outer diameter of the proximal portion 1112 are both smaller than the outer diameter of the distal portion 1113 , and the outer diameter of the proximal portion 1112 is smaller than that of the middle portion 1111 .
  • the outer diameter of the proximal portion 1112 may also be slightly larger than the outer diameter of the middle portion 1111 , but still smaller than the outer diameter of the distal portion 1113 .
  • a receiving portion 119 with an opening toward the proximal end is formed between the outer surface of the mounting seat 111 and the inner surface of the hand-held portion 112 (see FIGS. 7.1 and 7.2 ), and the bottom surface of the receiving portion 119 is formed at the distal end of the middle portion 1111 .
  • the movable assembly 12 includes an elastic member 121 and a movable member 122 .
  • the elastic member 121 is disposed in the inner cavity of the receiving portion 119
  • the movable member 122 is disposed near the proximal end of the elastic member 121
  • the movable member 122 is partially housed in the receiving portion 119 and is movably connected with the receiving portion 119, so that the elastic member 121 in a compressed state.
  • the fixing assembly 11 further includes a base 113 , and the base 113 is sleeved on the middle portion 1111 of the mounting seat 111 .
  • the base 113 has a hollow annular structure, and the inner wall of the base 113 is provided with internal threads, and the middle portion 1111 is provided with external threads, so that the base 113 and the middle portion 1111 are connected by threads, so that the base 113 is fixed on the mounting seat 111 and the base 113 is accommodated in the accommodating portion 119 between the mounting seat 111 and the handle portion 112 .
  • the elastic member 121 is a spring and is sleeved on the outer periphery of the proximal end portion 1112 of the mounting seat 111 , and the distal end surface of the elastic member 121 abuts against the proximal end surface of the base 113 .
  • the movable member 122 has a hollow structure with openings at both ends and the openings at both ends are connected.
  • the outer surface of the movable member 122 is provided with steps, so that the outer diameter of the proximal end portion is larger than the outer diameter of the distal end portion, and the outer diameter of the proximal end portion is smaller than the inner diameter of the receiving portion 119.
  • the distal end of the movable member 122 is inserted into the elastic member 121 , so that the proximal end surface of the elastic member 121 abuts against the stepped surface of the outer surface of the movable member 122 .
  • the inner surface of the receiving portion 119 is provided with a first limiting member 117, and the inner surface of the distal end portion of the movable member 122 is provided with a second limiting member 123.
  • the first limiting member 117 and the second limiting member 123 are both slightly hook-shaped protrusions.
  • the first limiting member 117 and the second limiting member 123 are in contact, and when the movable member 122 is acted by a force toward the distal end, the movable member 122 moves to the distal end, and the first limiting member 117 and the second limiting member 123 away from each other, the elastic member 121 is further compressed; when the force towards the distal end is removed, the movable member 122 moves towards the proximal end under the action of the elastic member 121, and the second limiting member 123 also moves towards the proximal end until the second limit
  • the positioning member 123 is in contact with the first limiting member 117 , the movable member 122 stops moving, thereby restricting the movable member 122 away from the receiving portion 119 and keeping the elastic member 121 in a compressed state all the time.
  • the first limiting member 117 is disposed at the proximal end of the outer surface of the proximal end portion 1112 of the mounting seat 111 , and has a hook-shaped structure extending toward the distal end. It can be understood that, the first limiting member and the second limiting member may be continuously arranged along the circumferential direction, or may be arranged in a discontinuous distribution.
  • the base 113 may not be provided.
  • the distal end of the elastic member 121 may directly contact the bottom surface of the receiving portion 119, and under the action of the movable member 122, it always abuts against the receiving portion 119. part 119 on the bottom surface.
  • the accommodating portion may also be provided on the movable assembly.
  • the accommodating portion may be provided at the distal end of the hand-held portion, with the opening facing the distal end, and at the same time accommodating the elastic member, and the movable member is also
  • a part is limited to be located in the accommodating part, and the specific structure of this part is the same as this embodiment, as long as the corresponding structure is replaced on the operating part.
  • the conveying device further includes a protective cover 116 and a movable track 114 .
  • the protective sleeve 116 is disposed at the distal end of the fixing assembly 11 .
  • the protective sleeve 116 is snapped onto the distal opening of the hand-held portion 112
  • the protective sleeve 116 has a substantially conical structure with an outer diameter from the proximal end to the distal end. gradually become smaller, so as to protect the outer sheath tube 21 and buffer the stress of the outer sheath tube 21 at the distal end of the handle portion 112 .
  • the protective cover 116 can be made of a material with a hardness slightly lower than that of the material from which the hand-held portion 112 is made.
  • annular protruding rib 115 is provided near the distal end of the moving track 114 , and the annular protruding rib 115 is engaged with the groove 118 on the inner surface of the mounting seat 111 , so that the moving track 114 is relative to the mounting seat 111 and the hand-held portion. 112 fixed. Except for the distal end portion of the movable track 114 which is disposed inside the fixing assembly 11 , the rest of the movable track 114 is exposed at the proximal end of the fixing assembly 11 .
  • the movable assembly also includes an operating portion 124 .
  • the operating portion 124 has an inner cavity, and both ends are provided with openings, and the inner cavity of the operating portion 124 communicates with the openings at both ends.
  • the inner diameter of the distal end of the lumen of the operating portion 124 is smaller than the outer diameter of the proximal end portion of the movable member 122 . end-to-end.
  • the operating portion 124 is sleeved on the above-mentioned portion of the movable rail 114 exposed at the proximal end of the fixing assembly 11 , and the inner surface of the hand-held portion 124 is in direct contact with the movable rail 114 .
  • the movable rail 114 is provided with a partial external thread on the outer surface exposed at the proximal end of the fixed assembly 11, and the operating portion 124 is internally provided with an internal thread matching the external thread on the outer surface of the movable rail 114, so that the operating portion 124 can be rotated to make
  • the operating portion 124 rotates and moves axially on the movable track 114 , and moves closer to or away from the fixed assembly 11 .
  • the outer diameter of the operating portion is naturally transitioned when it is in contact with the hand-held portion.
  • the distal end face of the operating portion is in contact with the proximal end face of the hand-held portion, the operating portion No further movement towards the handpiece is possible.
  • Both ends of the movable rail 114 are provided with openings, and an inner cavity is provided inside to communicate the two ends of the openings.
  • the outer surface of the movable track 114 also defines a side wall opening 1141 that communicates with the inner cavity.
  • the movable assembly 12 also includes a connector 125 .
  • the connecting piece 125 is disposed in the inner cavity of the movable rail 114 , and the proximal end portion of the connecting piece 125 protrudes from the side wall opening 1141 , so as to be clamped on the hand-held portion 124 to achieve relative fixation with the operating portion 124 .
  • Both ends of the connector 125 are also provided with openings, and the interior is provided with an inner cavity that communicates with the openings at both ends.
  • the distal end face of the outer sheath tube 21 is in contact with the proximal end face of the TIP head 23, the distal end face of the operating portion 124 is in contact with the proximal end face of the movable member 122, and the distal end face of the operating portion 124 is in contact with the hand-held end face.
  • the proximal end faces of the portions 112 are separated.
  • the elastic member 121 can still be compressed by the movable member 122 when the operating portion 124 moves towards the distal end, the TIP head 23 restricts the outer sheath tube 21 from continuing to move towards the distal end, so the outer sheath tube is not damaged on the premise , the operating portion 124 cannot continue to move toward the distal end, and the elastic member 121 cannot continue to compress.
  • the distal end face of the operating portion can also be separated from the proximal end face of the movable member in a natural state, but in any case, the distal end face of the operating portion is connected to the proximal end face of the hand-held portion.
  • the end faces are separated, so that when the implant is loaded, it can still be ensured that after the outer sheath tube is shortened or the sheath core is elongated, the operating part still has a stroke to move towards the distal end, thereby driving the outer sheath tube to continue towards the distal end. move.
  • the present invention also provides a delivery system 300 .
  • Delivery system 300 includes delivery device 100 and implant 200 of the present invention.
  • the implant 200 can be loaded into the outer sheath 21 of the delivery system 100 through which the implant 200 can be delivered into a living body.
  • the distal end face of the outer sheath 21 of the delivery device 100 abuts against the proximal end face of the TIP head 23 , and the movable assembly 12 The distal end face is separated from the proximal end face of the fixing assembly 11 , so that the movable member 122 is partially exposed to the handle portion 112 .
  • the movable member is located in the inner cavity of the hand-held portion, the distal end face of the movable member is also separated from the proximal end face of the hand-held portion.
  • the outer sheath 21 is moved toward the distal end by operating the movable assembly 12, so that the distal end face of the outer sheath 21 is close to the TIP head 23.
  • the end faces are abutted to complete the loading of the implant 200 .
  • the loading force is too large, and the resistance of the outer sheath tube 21 to the proximal end of the implant body 200 is also greater.
  • the outer sheath tube 21 In the field of medical devices, the outer sheath tube It is usually made of polymer material, so that the outer sheath tube 21 will shorten under the action of loading resistance.
  • the movable component of the delivery device In the natural state, the movable component of the delivery device is separated from the fixed component, and a compressible stroke is reserved for further movement of the outer sheath after the shortening.
  • the tube 21 and the TIP head 23 are still in a separated state, and the operation part 124 can still continue to move towards the distal end, pushing the movable member 122 to compress the elastic member 121, so that the outer sheath tube 21 continues to move towards the distal end until the distal end of the outer sheath tube 21 The end face abuts the proximal end face of the TIP head 23 .
  • the outer sheath may or may not be shortened during loading. Sizes vary. Therefore, after the loading of the implant is completed by further compressing the elastic member by the movable member to compensate for the shortened distance of the outer sheath, the operating part and the hand-held part do not necessarily want to be in contact, and the two may still be in a separated state.
  • a compressible stroke is provided for the outer sheath, which solves the problem that when the outer sheath of the delivery device is loaded with the implant, the outer sheath may be damaged. Shortening or elongation of the sheath core causes the problem that the distal end of the outer sheath cannot be closed with the TIP head after the implant is loaded.
  • the conveying device of this embodiment is basically the same as the conveying device of the first embodiment, and the difference is only in the control mechanism.
  • the control mechanism of this embodiment is not provided with a mounting seat, and a plurality of protruding ribs 318 are provided on the inner wall of the hand-held portion 312 .
  • the protruding ribs 318 on the 312 are limited and engaged, so that the movable rail 314 is fixed by the handle 312 , and a receiving portion 319 with an opening toward the proximal end is formed between the inner cavity of the handle 312 and the distal end of the movable rail 314 .
  • the elastic member 321 is disposed in the receiving portion 319 , and the distal end of the elastic member 321 abuts against the protruding rib 318 on the inner wall of the handle portion 312 , thereby restricting the distal end of the elastic member 321 from continuing to move toward the distal end.
  • the distal end of the movable piece 322 is movably received in the accommodating portion 319 , and the proximal end of the movable piece 322 can protrude from the proximal end of the accommodating portion 319 .
  • the first limiting member 317 is arranged on the inner wall of the handle portion 312 (that is, the inner wall of the receiving portion), and the second limiting member 323 is arranged on the outer surface of the movable member 322, so that the first limiting member 323 The member 317 and the second limiting member 323 can move away from or approach each other under the action of external force.
  • the first limiting member may be a protruding rib provided on the handle portion 312 .
  • the operation portion 324 is disposed near the proximal end of the movable member 322 and does not exceed the movable member when moving. The specific structure is similar to that of the first embodiment, and will not be repeated here.
  • the accommodating portion in this embodiment can also be provided on the movable assembly.
  • the accommodating portion can be provided with the distal end of the hand-held portion, with the opening facing the distal end, and at the same time accommodating the elastic member, and the movable member is also partially limited to the In the accommodating part, the specific structure of this part is the same as that of the present embodiment, as long as the corresponding structure is replaced on the operating part.
  • the delivery device of this embodiment provides a compressible stroke for the outer sheath by arranging the elastic member and the movable member on the movable component, which solves the problem of shortening the outer sheath when the outer sheath of the delivery device is loaded with implants. Or the sheath core is elongated, resulting in the problem that the distal end of the outer sheath cannot be closed with the TIP head after the implant is loaded. In addition, the control mechanism structure is more concise.
  • the conveying device of this embodiment is basically the same as the first embodiment, and the difference lies in the control mechanism, and no elastic member and movable member are arranged in the control mechanism.
  • the control mechanism of this embodiment includes a fixed component and a movable component, wherein the distal end of the movable component 424 includes a receiving portion 419 with an opening facing the distal end, and the receiving portion 419 can receive the proximal portion of the fixed component 412 That is, the size of the inner cavity of the accommodating portion 419 is larger than the outer diameter of the proximal end portion of the fixing component 412 , preferably, the inner diameter of the accommodating portion 419 is equal to the outer diameter of the proximal end portion of the fixing component 412 . It can be understood that the inner diameter of the receiving portion may increase from the proximal end to the distal end, and accordingly, the outer diameter of the proximal end portion of the fixing component decreases from the distal end to the proximal end.
  • the receiving part and the received part on the control mechanism can be interchanged.
  • the proximal end portion of the fixed component 512 is provided with a receiving portion 519 with an opening toward the proximal end, and the receiving portion 519 can receive the distal end portion of the movable component 524 .
  • the outer surface of the distal end of the movable component 524 is provided with a stop 526, and the stop 526 can be formed with The step surface of the outer surface of the movable assembly 524 .
  • the outer surface of the fixed assembly can also be provided with a stop position.
  • the proximal end face of the TIP head abuts against the distal end face of the outer sheath, and the accommodating portion 419 only accommodates a small part of the proximal end of the fixing assembly 412 .
  • the movable assembly continues to move toward the distal end, so that the receiving portion accommodates more proximal portions of the fixed assembly 412 to compensate for the shortened size of the outer sheath, and the implantation is completed. Loading into the body.
  • the delivery device of this embodiment provides a compressible stroke for the outer sheath by arranging the elastic member and the movable member on the movable component, which solves the problem of shortening the outer sheath when the outer sheath of the delivery device is loaded with implants. Or the sheath core is elongated, resulting in the problem that the distal end of the outer sheath cannot be closed with the TIP head after the implant is loaded. In addition, the control mechanism structure is more concise.

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  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

一种输送装置（100）及输送系统（300），该输送装置（100）包括导管组件（20）和控制机构（10），该导管组件（20）包括外鞘管（21）和鞘芯（22），该控制机构（10）可控制该外鞘管（21）运动，该鞘芯（22）远端设有TIP头（23），该控制机构（10）包括固定组件（11）和活动组件（12），该活动组件（12）靠近该固定组件（11）的近端设置，该鞘管外（21）的近端部穿过该固定组件（11）后与该活动组件（12）相连，且在该活动组件（12）的控制下该外鞘管（21）可相对于该固定组件（11）运动，当该外鞘管（21）的远端端面与该TIP头（23）的近端端面相抵时，该活动组件（12）的远端端面与该固定组件（11）的近端端面相分离。从而，为外鞘管（21）提供了一段可压缩行程，解决了输送装置（100）的外鞘管（21）在装载植入体（200）时，外鞘管（21）短缩或鞘芯（22）被拉长，造成装载植入体（200）后外鞘管（21）远端与TIP头（23）无法合拢的问题。

Description

输送装置及输送系统 技术领域
本发明涉及医疗器械领域，具体涉及输送装置及输送系统。
背景技术
人体的心脏分为四个腔室，每个腔室都有各自的“出口”，共有四类瓣膜(二尖瓣、主动脉瓣、肺动脉瓣和三尖瓣)，它们确保由心脏泵送的血液在心血管系统中按照指定的方向流动。主动脉瓣位于左心室和升主动脉之间，其作用是确保左心室的血流能够单向流入主动脉血管内，而不是相反。当主动脉瓣打开时，心室内的高压血通过主动脉瓣流入主动脉，随后瓣膜关闭，此时射入主动脉的血液则无法通过主动脉瓣返流回左心室内。但各种心脏疾病或退行性病变的发生，会导致瓣膜发生部分功能障碍，如瓣膜钙化、主动脉瓣关闭不全等，此类病变会影响心脏的正常工作，致使人逐渐衰弱或危及生命。
针对主动脉瓣功能的缺失，目前已有多种治疗的方法和装置来治疗主动脉瓣功能障碍，如传统的瓣膜置换手术，被认为是“开放心脏”手术。但此类手术由于复杂的操作及较大的创伤，并不适用于所有的患者。此外，通过介入的方式进行主动脉瓣膜置换的手术，已逐渐被人们所关注。在此类技术中，自膨式假体瓣膜一般以卷曲状态安装在柔性导管的末端并经患者的血管或身体推进，直至该假体瓣膜抵达植入部位。继而假体瓣膜在有缺陷的天然主动脉瓣膜的部位处扩张至其功能尺寸。
在进行经导管主动脉瓣膜置换时，通常的手术路径是从人体股动脉入路，将装载有假体瓣膜的输送系统经主动脉推送至病变瓣膜处。此时，输送系统需要穿过整个主动脉弓部，为了使输送系统更容易通过弓部弯曲的血管，通常的做法是尽可能降低鞘管的外径，但这样往往导致瓣膜在收容进鞘管的过程中，压缩变形量更大，因此装载力也会随之变大，装载时容易导致输送系统鞘管/鞘芯被拉长或缩短，输送系统装载后无法合拢，导致手术困难或失败。
发明内容
本发明提供了一种输送装置，所述输送装置包括导管组件和控制机构，所述导管组件包括外鞘管和鞘芯，所述所述控制机构可控制所述鞘管运动，所述鞘芯远端设有TIP头，所述控制机构包括固定组件和活动组件，所述活动组件靠近所述固定组件的近端设置，所述鞘管的近端部穿过所述固定组件后与所述活动组件相连，且在所述活动组件的控制下所述鞘管可相对于所述固定组件运动，当所述鞘管的远端 端面与所述TIP头的近端端面相抵时，所述活动组件的远端端面与所述固定组件的近端端面相分离。
在一实施例中，所述固定组件的近端部包括开口朝向近端的收容部，所述收容部可收容所述固定组件的远端部；或所述活动组件的远端部包括开口朝向远端的收容部，所述收容部可收容所述固定组件的近端部。
在一实施例中，所述活动组件的远端部外表面或所述固定组件的近端部外表面设有止挡位，当所述收容部上靠近所述止挡位的端面与所述止挡位相抵时，所述活动组件相对于所述固定组件无轴向移动。
在一实施例中，所述活动组件包括弹性件和活动件，所述固定组件的近端包括开口朝向近端的收容部或所述活动组件的远端包括开口朝向远端的收容部，所述弹性件设于所述收容部的内腔中，所述活动件靠近所述弹性件设置，且所述活动件至少部分被所述收容部收容同时与所述收容部活动连接，使得所述弹性件处于压缩状态。
在一实施例中，所述收容部的内壁上设有第一限位件，所述活动件上设有第二限位件，所述第一限位件与所述第二限位件接触时限制所述活动件远离所述收容部。
在一实施例中，所述活动件可朝向所述收容部内腔的底面移动，并使所述弹性件压缩以及使所述第一限位件与所述第二限位件分离。
本发明还提供了一种输送系统，包括上述任一所述的输送装置和植入体，所述植入体可装载于所述外鞘管内。
在一实施例中，所述植入体装载至所述外鞘管内后，所述外鞘管的远端端面与所述TIP头的近端端面相抵，且所述活动组件的远端端面与所述固定组件的近端端面之间的距离相较于装载所述植入体之前所述活动组件的远端端面与所述固定组件的近端端面之间的距离更短。
在一实施例中，所述固定组件还包括运动轨道，所述活动组件包括操作部，所述操作部具有内腔，所述活动轨道穿过所述操作部的内腔，且所述操作部可沿所述活动轨道相对于所述固定组件轴向移动。
在一实施例中，所述第一限位件与所述第二限位件分离时，所述操作部可进一步朝向远端移动。
本发明的输送装置和输送系统，通过设置活动组件和固定组件，且在未装载植入体之前，活动组件的远端端面和固定组件的近端端面相分离，为外鞘管提供了一段可压缩行程，解决了输送装置的外鞘管在装载植入物时，外鞘管短缩或鞘芯被拉长，造成装载植入物后外鞘管远端与TIP头无法合拢的问题。
附图说明
图1为本发明一实施例的输送装置整体结构示意图；
图2为图1所示输送装置的部分结构放大示意图；
图3为图1所示的输送装置的控制机构部分结构分解图；
图4为图3所示的控制机构的部分结构的组合图；
图5为图4所示的控制机构的部分结构的截面示意图；
图6为图5所示的控制机构的部分结构的截面分解示意图；
图7.1为图1所示的输送装置的部分截面结构示意图；
图7.2为图7.1的部分结构放大示意图；
图8为本发明一实施例的输送系统中的输送装置结构示意图；
图9为本发明一实施例的输送系统结构示意图，为图8所示的输送装置装载植入体的过程状态；
图10为图9所示的输送系统完成装载后的结构示意图；
图11为本发明另一实施例的输送装置的控制机构截面结构示意图；
图12为图11所示的输送装置的控制机构部分截面结构示意图；
图13为本发明又一实施例的输送装置的控制机构截面结构示意图；
图14为本发明再一实施例的输送装置的控制机构截面结构示意图。
具体实施方式
为更好地理解本发明的技术方案和有效效果，以下结合附图对本发明的技术方案做举例说明。以下具体实施例仅为部分实施例，并非对本发明的限制。
本发明所采用的技术术语的含义除非特别说明均为本领域技术人员所理解的通常含义。
在医疗器械领域，定义靠近操作者的一端为近端，远离操作者的一端为远端，并以此来描述某一部件的近端和远端，以及部件之间的相对位置关系。
实施例一
如图1和图2所示，本实施例的输送装置100包括控制机构10和导管组件20。操作者可通过控制机构10控制导管组件20发生运动。其中，导管组件20包括外鞘管21和鞘芯22。外鞘管21为具有内腔的中空管体，鞘芯22穿设在外鞘管21的内腔中。鞘芯22远端设有TIP头23，TIP头23为外径朝向远端渐缩的锥形结构，且由高分子材料制成，用以引导输送装置在血管内的移动。外鞘管21可在控制机构11的控制下靠近或远离TIP头23，当外鞘管21的远端端面与 TIP头23的近端端面相抵接触时，外鞘管21被TIP头23阻挡，无法继续朝向远端移动。
结合图1和图3所示，控制机构10包括固定组件11和活动组件12。固定组件11和活动组件12相邻设置，且活动组件12靠近固定组件11的近端设置。外鞘管21的近端部穿过固定组件11后与活动组件12相连，且在活动组件12的控制下可相对于固定组件11和鞘芯22运动，当外鞘管22的远端端面与TIP头23的近端端面相抵时，活动组件12的远端端面与固定组件11的近端端面相分离，即二者之间无接触。
固定组件11包括手持部112和安装座111。其中，手持部112和安装座均包括两端具有开口的中空壳体，且安装座111设置在手持部112的空腔内，相对于手持部112固定。安装座111与手持部112之间可通过多种方式相连，例如，安装座111的外表面可设置凹槽，相应地，手持部112的内表面设置与凹槽相匹配的肋条，通过肋条与凹槽的卡接实现安装座111与手持部112的相对固定。可以理解的是，手持部可以通过两片壳体拼合而成，也可以一体加工而成。同理，安装座111也可以通过至少两部分壳体拼合而成，或者一体加工而成。
如图4和图5所示，安装座111包括外径减小的中部1111和设置在中部1111近端的近端部1112，以及设置在中部1111远端的远端部1113。其中，中部1111的外径和近端部1112的外径均比远端部1113的外径小，且近端部1112的外径比中部1111的外径小。在其它实施例中，近端部1112的外径也可以稍大于中部1111的外径，但仍小于远端部1113的外径。从而使得安装座111的外表面与手持部112的内表面之间形成开口朝向近端的收容部119(参见图7.1和图7.2)，且在中部1111的远端形成收容部119的底面。
如图3至图6所示，活动组件12包括弹性件121和活动件122。其中，弹性件121设置在收容部119的内腔中，活动件122靠近弹性件121的近端设置，活动件122部分收容于收容部119内，且与收容部119活动连接，使得弹性件121处于压缩状态。
具体地，固定组件11还包括底座113，底座113套设在安装座111的中部1111上。本实施例中，底座113呈中空环状结构，且底座113的内壁上设有内螺纹，中部1111上设有外螺纹，从而底座113与中部1111通过螺纹相连，使得底座113固定在安装座111上，且底座113容纳于安装座111与手持部112之间的收容部119内。弹性件121为弹簧，套设在安装座111的近端部1112的外周，且弹性件121的远端端面与底座113的近端端面相抵。
如图5和图6所示，活动件122呈两端具有开口且两端开口连通的中空结构。活动件122的外表面设有台阶，使得近端部的外径大于 远端部的外径，且近端部的外径小于收容部119的内径。活动件122的远端部穿设在弹性件121内，使得弹性件121的近端端面与活动件122外表面的台阶面相抵。为实现活动件122对弹性件121的持续施压，收容部119的内表面设有第一限位件117，活动件122的远端部内表面设有第二限位件123，本实施例中，第一限位件117和第二限位件123均为略呈钩状的凸起。自然状态下，第一限位件117和第二限位件123接触，当活动件122受到朝向远端的力的作用时向远端移动，第一限位件117和第二限位件123相互远离，弹性件121进一步被压缩；当撤除朝向远端的力时，活动件122在弹性件121的作用下朝向近端移动，第二限位件123也朝向近端移动，至第二限位件123和第一限位件117接触时，活动件122停止移动，从而限制活动件122远离收容部119，并使弹性件121始终处于压缩状态。本实施例中，第一限位件117设置在安装座111的近端部1112的外表面的近端，且呈朝向远端延伸的钩状结构。可以理解的是，第一限位件和第二限位件可以沿周向连续设置，也可以呈断点式分布设置。
可以理解的是，在其它实施例中，也可以不设置底座113，此时，弹性件121的远端可以直接与收容部119的底面接触，且在活动件122的作用下始终抵持在收容部119的底面上。
还可以理解的是，在其它实施例中，收容部也可以设置在活动组件上，具体地，收容部可以设置手持部的远端，且开口朝向远端，同时收容弹性件，且活动件也部分限位于收容部内，该部分的具体结构与本实施例相同，只要将相应结构调换至操作部上即可。
如图3、图7.1和图7.2所示，输送装置还包括保护套116和活动轨道114。其中，保护套116设置在固定组件11的远端，具体地，保护套116卡接在手持部112的远端开口上，且保护套116大致呈锥形结构，外径从近端至远端渐小，从而保护外鞘管21，缓冲手持部112远端对外鞘管21的应力。优选地，保护套116可采用硬度稍低于制成手持部112的材料硬度的材料制成。
本实施例中，运动轨道114靠近远端的部位设有环形突棱115，环形突棱115与安装座111内表面的凹槽118卡合，从而使得活动轨道114相对于安装座111以及手持部112固定。活动轨道114除远端部设置在固定组件11的内部，其余部分外露于固定组件11的近端。
活动组件还包括操作部124。操作部124具有内腔，且两端设有开口，操作部124的内腔连通两端的开口。操作部124的内腔的远端内径小于活动件122的近端部的外径，在运动过程中，操作部124的远端端面可远离活动件122的近端端面或与活动件122的近端端面相抵。
操作部124套设在活动轨道114的上述外露于固定组件11近端的部分上，且手持部124的内表面与活动轨道114直接接触。活动轨道 114上外露于固定组件11近端的外表面上设有部分外螺纹，操作部124内部设有与活动轨道114外表面的外螺纹匹配的内螺纹，从而，可以通过转动操作部124使得操作部124在活动轨道114上发生周向转动和轴向移动，并靠近或远离固定组件11。从人体工程学角度考虑，为使得操作者操作时舒适，优选地，操作部与手持部相接触时外径自然过渡，当操作部的远端端面与手持部的近端端面相抵时，操作部无法继续朝向手持部移动。
活动轨道114两端设有开口，且内部设有使两端的开口连通的内腔。活动轨道114的外表面还开设了与内腔连通的侧壁开口1141，侧壁开口1141在活动轨道114的外表面沿活动轨道114的长度方向延伸，但延伸长度不超过活动轨道114的长度。活动组件12还包括连接件125。连接件125设置在活动轨道114的内腔中，且连接件125的近端部部分从侧壁开口1141伸出，从而卡接在手持部124上，实现与操作部124的相对固定。连接件125的两端也设有开口，且内部设有与两端开口连通的内腔，外鞘管21的近端部穿设在连接件125的内腔中并与连接件125相连，二者之间可以通过焊接、粘接或螺纹连接的方式相连。因此，当手持部125在活动轨道124上移动时，会带动连接件125在侧壁开口1141中沿活动轨道114的长度方向移动，从而通过连接件125带动外鞘管21发生移动。
自然状态下，外鞘管21的远端端面与TIP头23的近端端面相抵，且操作部124的远端端面与活动件122的近端端面相抵，且操作部124的远端端面与手持部112的近端端面相分离。虽然当操作部124朝向远端移动时，仍能通过活动件122使得弹性件121压缩，但由于TIP头23限制了外鞘管21继续朝向远端移动，故在不损坏外鞘管的前提下，操作部124无法继续朝向远端移动，弹性件121也无法继续压缩。可以理解的是，在其它实施例中，自然状态下，操作部的远端端面也可以与活动件的近端端面相分离，但无论如何，操作部的远端端面都与手持部的近端端面相分离，从而，仍能保证在装载植入体时，外鞘管发生短缩或鞘芯发生伸长后，操作部仍有朝向远端移动的行程，从而带动外鞘管继续朝向远端移动。
如图8至图10所示，本发明还提供了一种输送系统300。输送系统300包括本发明的输送装置100和植入体200。植入体200可装载至输送系统100的外鞘管21内，通过输送系统100可以将植入体200输送至生物体内。当植入体200装载至输送装置100之前(即输送装置100处于自然状态下时)，输送装置100的外鞘管21的远端端面与TIP头23的近端端面相抵，且活动组件12的远端端面与固定组件11的近端端面相分离，使得活动件122部分外露于手持部112。应当理解，此时，虽然活动件位于手持部的内腔中，但活动件的远端端面与 手持部的近端端面也是分离的。装载植入体200时，植入体200固定在输送装置100上后，通过操作活动组件12，使得外鞘管21朝向远端移动，使得外鞘管21的远端端面与TIP头23的近端端面相抵，以完成植入体200的装载。在装载过程中，由于植入体200自身的径向膨胀力，装载力过大，外鞘管21受到植入体200的朝向近端的阻力也越大，在医疗器械领域中，外鞘管通常采用高分子材料制成，从而外鞘管21会在装载阻力的作用下发生短缩。由于自然状态下，输送装置的活动组件与固定组件相分离，为外鞘管发生短缩后的进一步移动预留了一端可压缩行程，因此，即便操作部124与活动件122相抵时，外鞘管21与TIP头23仍处于分离状态，操作部124仍然可以继续朝向远端移动，推动活动件122压缩弹性件121，使外鞘管21继续朝向远端移动，直至外鞘管21的远端端面与TIP头23的近端端面相抵。
为更好地表示外鞘管远端与TIP头以及植入体之间的位置关系，图8至图10的输送系统的远端部的做了尺寸放大处理。
可以理解的是，由于植入体存在多种尺寸，装载时，外鞘管可能会发生短缩，也可能不会发生短缩，发生短缩时，短缩的尺寸也会因植入体的尺寸不同而不同。因此，通过活动件进一步压缩弹性件以弥补外鞘管的短缩距离完成植入体的装载后，操作部与手持部不一定想接触，二者仍可能处于分离状态。
因此，在本实施例中，通过在活动组件上设置弹性件和活动件，为外鞘管提供了一段可压缩的行程，解决了输送装置的外鞘管在装载植入物时，外鞘管短缩或鞘芯被拉长，造成装载植入物后外鞘管远端与TIP头无法合拢的问题。
实施例二
本实施例的输送装置与实施例一的输送装置基本相同，不同之处仅在于控制机构。
如图11和图12所示，本实施例的控制机构不设置安装座，在手持部312的内壁上设有多个突棱318，活动轨道314远端部上的环形突棱315与手持部312上的突棱318限位卡合，从而通过手持部312固定活动轨道314，且在手持部312的内腔与活动轨道314的远端部之间形成开口朝向近端的收容部319。弹性件321设置在收容部319内，且弹性件321的远端与手持部312内壁上的突棱318相抵，从而限制弹性件321的远端继续朝向远端移动。活动件322远端部可活动地收容于收容部319内，且活动件322近端可突出于收容部319的近端。本实施例中，第一限位件317设置在手持部312的内壁上(也即收容部的内壁上)，第二限位件323设置在活动件322的外表面，从 而，第一限位件317和第二限位件323可以在外力的作用下相互远离或靠近。可以理解的是，第一限位件可以是设置在手持部312上的突棱。操作部324靠近活动件322的近端设置，且移动时不超过活动件，具体结构与实施例一类似，不再赘述。
可以理解的是，本实施例的收容部也可以设置在活动组件上，具体地，收容部可以设置手持部的远端，且开口朝向远端，同时收容弹性件，且活动件也部分限位于收容部内，该部分的具体结构与本实施例相同，只要将相应结构调换至操作部上即可。
本实施例的输送装置装载植入体时的操作及弥补外鞘管短缩的原理与实施例一相同，此处不再赘述。
本实施例的输送装置通过在活动组件上设置弹性件和活动件，为外鞘管提供了一段可压缩的行程，解决了输送装置的外鞘管在装载植入物时，外鞘管短缩或鞘芯被拉长，造成装载植入物后外鞘管远端与TIP头无法合拢的问题。此外，控制机构结构更加简洁。
实施例三
本实施的输送装置与实施例一基本相同，不同之处在于控制机构，且控制机构内不设置弹性件和活动件。
如图13所示，本实施例的控制机构包括固定组件和活动组件，其中，活动组件424的远端部包括开口朝向远端的收容部419，收容部419可收容固定组件412的近端部，也即收容部419的内腔尺寸大于固定组件412的近端部的外径，优选收容部419的内径与固定组件412的近端部外径相等。可以理解的是，收容部的内径可以是由近端至远端渐大的，相应地，固定组件的近端部的外径从远端至近端渐缩。
可以理解的是，在其它实施例中，控制机构上的收容部和被收容的部分可以互换。如图14所示，固定组件512的近端部设有开口朝向近端的收容部519，收容部519可收容活动组件524的远端部。此外，为使控制机构的外径过渡自然，且限制活动组件相对于固定组件移动的最大距离，活动组件524的远端部的外表面设有止挡位526，止挡位526可以是形成与活动组件524外表面的台阶面。当收容部519的近端端面与止挡位526相抵时，活动组件524无法继续朝向固定组件512移动。
还可以理解的是，当收容部设置在活动组件的远端部时，固定组件的外表面也可以设置止挡位。
本实施例的其它结构与实施例一类似，此处不再赘述。
使用本实施例的输送装置装载植入体之前，TIP头的近端端面与外鞘管的远端端面相抵，收容部419仅仅收容固定组件412近端部的一小部分。当装载植入体且外鞘管发生短缩时，继续朝向远端移动活 动组件，使得收容部收容更多的固定组件412的近端部，以弥补外鞘管发生短缩的尺寸，完成植入体的装载。
本实施例的输送装置通过在活动组件上设置弹性件和活动件，为外鞘管提供了一段可压缩的行程，解决了输送装置的外鞘管在装载植入物时，外鞘管短缩或鞘芯被拉长，造成装载植入物后外鞘管远端与TIP头无法合拢的问题。此外，控制机构结构更加简洁。
上述实施例仅为本发明的优选实施例，本说明书无法对所有可选的实施例做详尽列举，本领域技术人员可以根据实际需求对上述实施例的部分结构进行拆分、组合或省略部分结构，在不改变本发明构思的前提下，均属于本发明涵盖的技术方案。

Claims (10)

  1. 一种输送装置，所述输送装置包括导管组件和控制机构，所述导管组件包括外鞘管和鞘芯，所述所述控制机构可控制所述鞘管运动，所述鞘芯远端设有TIP头，其特征在于，所述控制机构包括固定组件和活动组件，所述活动组件靠近所述固定组件的近端设置，所述鞘管的近端部穿过所述固定组件后与所述活动组件相连，且在所述活动组件的控制下所述鞘管可相对于所述固定组件运动，当所述鞘管的远端端面与所述TIP头的近端端面相抵时，所述活动组件的远端端面与所述固定组件的近端端面相分离。
  2. 根据权利要求1所述的输送装置，其特征在于，所述固定组件的近端部包括开口朝向近端的收容部，所述收容部可收容所述固定组件的远端部；或所述活动组件的远端部包括开口朝向远端的收容部，所述收容部可收容所述固定组件的近端部。
  3. 根据权利要求2所述的输送装置，其特征在于，所述活动组件的远端部外表面或所述固定组件的近端部外表面设有止挡位，当所述收容部上靠近所述止挡位的端面与所述止挡位相抵时，所述活动组件相对于所述固定组件无轴向移动。
  4. 根据权利要求1所述的输送装置，其特征在于，所述活动组件包括弹性件和活动件，所述固定组件的近端包括开口朝向近端的收容部或所述活动组件的远端包括开口朝向远端的收容部，所述弹性件设于所述收容部的内腔中，所述活动件靠近所述弹性件设置，且所述活动件至少部分被所述收容部收容同时与所述收容部活动连接，使得所述弹性件处于压缩状态。
  5. 根据权利要求4所述的输送装置，其特征在于，所述收容部的内壁上设有第一限位件，所述活动件上设有第二限位件，所述第一限位件与所述第二限位件接触时限制所述活动件远离所述收容部。
  6. 根据权利要求5所述的输送装置，其特征在于，所述活动件可朝向所述收容部内腔的底面移动，并使所述弹性件压缩以及使所述第一限位件与所述第二限位件分离。
  7. 一种输送系统，其特征在于，包括权利要求1至6中任一项所述的输送装置和植入体，所述植入体可装载于所述外鞘管内。
  8. 根据权利要求7所述的输送系统，其特征在于，所述植入体装载至所述外鞘管内后，所述外鞘管的远端端面与所述TIP头的近端端面相抵，且所述活动组件的远端端面与所述固定组件的近端端面之间的距离相较于装载所述植入体之前所述活动组件的远端端面与所述固定组件的近端端面之间的距离更短。
  9. 根据权利要求7所述的输送系统，其特征在于，所述固定组件还包括运动轨道，所述活动组件包括操作部，所述操作部具有内腔，所述活动轨道穿过所述操作部的内腔，且所述操作部可沿所述活动轨道 相对于所述固定组件轴向移动。
  10. 根据权利要求9所述的输送系统，其特征在于，所述第一限位件与所述第二限位件分离时，所述操作部可进一步朝向远端移动。
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