WO2020135260A1 - 一种人工瓣膜的输送导管及输送装置 - Google Patents

一种人工瓣膜的输送导管及输送装置 Download PDF

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Publication number
WO2020135260A1
WO2020135260A1 PCT/CN2019/127046 CN2019127046W WO2020135260A1 WO 2020135260 A1 WO2020135260 A1 WO 2020135260A1 CN 2019127046 W CN2019127046 W CN 2019127046W WO 2020135260 A1 WO2020135260 A1 WO 2020135260A1
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WO
WIPO (PCT)
Prior art keywords
tube
inner core
artificial valve
core tube
sheath
Prior art date
Application number
PCT/CN2019/127046
Other languages
English (en)
French (fr)
Inventor
吴旭闻
梅杰
桂宝珠
陈国明
李�雨
Original Assignee
上海微创心通医疗科技有限公司
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Filing date
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Application filed by 上海微创心通医疗科技有限公司 filed Critical 上海微创心通医疗科技有限公司
Publication of WO2020135260A1 publication Critical patent/WO2020135260A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/24Heart 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
    • A61F2/2442Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
    • A61F2/2466Delivery devices therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/0095Packages or dispensers for prostheses or other implants
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/24Heart 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/962Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve

Definitions

  • the present invention relates to the technical field of medical devices, in particular to a delivery catheter and delivery device for artificial valves.
  • the artificial valve In heart valve replacement surgery, the artificial valve needs to be accurately released. Due to the complexity of the human anatomy, artificial valves are often designed into irregular shapes. For example, in order to achieve the anchoring of the artificial valve, it is designed to conform to the shape of the anatomical structure, and the cross section of the stent is designed to be D-shaped, polygonal, or the like. In order to accurately release the artificial valve of irregular cross-section to the anatomical position, the conveyor needs to be able to adjust the angle of the artificial valve.
  • the object of the present invention is to provide a new type of artificial valve delivery catheter and delivery device to solve the problem of irregular cross-section artificial valve difficult to accurately release.
  • a prosthetic valve delivery catheter including a first component and a second component
  • the first component includes a sheath that can accommodate the prosthetic valve, and one end of the sheath Fixed A connected guide head and an inner core tube fixedly connected to the guide head and located in the cavity of the sheath tube
  • the second component includes an outer tube, an inner tube located in the cavity of the outer tube, and the A fixed head with an inner tube fixedly connected, the inner core tube is arranged in a cavity of the inner tube, and a circumferential positioning fit is formed between the sheath tube or the inner core tube and the fixed head.
  • the inner wall of the fixed head and the outer wall of the inner core tube form a nested structure.
  • the inner wall of the fixed head is provided with protrusions or grooves
  • the outer wall of the inner core tube is provided with the inner wall protrusions or grooves of the fixed head to cooperate Grooves or protrusions.
  • the inner wall of the sheath tube and the outer wall of the fixed head form a nested structure.
  • the inner wall of the sheath tube is provided with protrusions or grooves
  • the outer wall of the fixed head is provided with a protrusion or groove matching with the inner wall of the sheath tube Grooves or protrusions.
  • the outer wall or the inner wall of the fixed head is provided with at least one embedded section, and the frictional force generated between the embedded section and the sheath tube or the inner core tube is greater than The frictional force generated between the valve and the sheath tube or the inner core tube.
  • the static friction coefficient between the embedded section and the sheath tube or the inner core tube is in a range of 0.1-1.5.
  • the embedding section includes a first strip-shaped unit and a second strip-shaped unit, and a first strip-shaped unit and the second strip-shaped unit are connected between A spring and a second play.
  • the delivery catheter further includes a pull wire, the pull wire is provided in the first strip-shaped unit and the second strip-shaped unit and the first spring or the first The junction of the two springs.
  • the pull wire is located between the inner tube and the inner core tube, and the inner tube is a multi-lumen tube.
  • the pull wire is located in the inner core tube, and the inner core tube is a multi-lumen tube.
  • the above-mentioned artificial valve delivery catheter, the first strip-shaped unit and the second strip-shaped unit The outer wall or the inner wall of the fixed head is arranged in axisymmetric distribution.
  • the fixed head and the inner tube are connected by a bearing or an elastic material.
  • the outer tube is a polymer tube or a composite tube of metal and polymer.
  • a prosthetic valve delivery device including a handle and a delivery catheter connected to the handle, the handle includes an inner core tube movable part and a fixed connection, the The movable part of the inner core tube is connected to the inner core tube for controlling the axial or circumferential movement of the inner core tube, and the fixed connecting member is fixedly connected to the inner tube.
  • the above-mentioned artificial valve delivery device further includes a pull wire, the pull wire is located between the inner tube and the inner core tube, and is connected to the handle, or the pull wire passes through the inner The core tube is connected to the handle.
  • the sheath or the inner core tube and the fixed head form a circumferential positioning fit, which can realize that the inner core tube drives the guide head and the sheath when rotating in the circumferential direction
  • the whole rotation of the tube and the fixed head is coordinated to achieve the purpose of adjusting the circumferential angle of the artificial valve release.
  • the inner tube and the outer tube are kept stationary, the three-dimensional configuration required for positioning is maintained, and the accuracy of the positioning of the artificial valve release is improved.
  • the artificial valve delivery catheter can accurately release an artificial valve with an irregular cross-section at a diseased location, and improve the release accuracy of the artificial valve with an irregular cross-section.
  • FIG. 1 is a schematic structural view of an artificial valve delivery catheter according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a circumferential cooperation structure of a sheath tube or an inner core tube and a fixed head according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of an artificial valve delivery device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a handle structure according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a nesting fit structure of a fixed head and an inner core tube according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of the structure of the concave-convex shape of the fixed head and the inner core tube according to the embodiment of the invention
  • FIG. 7 is a cross-sectional view of a nested fitting structure of a sheath tube and a fixed head according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of the structure of the convex and concave shapes of the sheath and the fixed head according to the embodiment of the present invention.
  • FIG. 9 is a three-dimensional structure diagram of an embedded section provided on an outer wall of a fixed head according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of the structure of the embedded section and the spring in a state where the sheath and the fixed head are separated according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of the structure of the embedded section and the spring in the locked state of the sheath and the fixed head of the embodiment of the present invention
  • FIG. 12 is a schematic view of the state of the separation structure of the sheath tube and the fixed head when the cable is tightened according to an embodiment of the present invention
  • FIG. 13 is a schematic view of the state of the locking structure of the sheath tube and the fixed head when the cable is loosened according to an embodiment of the present invention
  • FIG. 14 is a cross-sectional view of the locking structure of the fixing head and the inner core tube when the cable is tightened according to an embodiment of the present invention
  • FIG. 15 is a schematic diagram of the structure of the fitting of the embedded section and the spring in the locked state of the fixed head and the inner core tube according to an embodiment of the present invention
  • FIG. 16 is an enlarged schematic view of the state of the locking structure of the fixed head and the inner core tube when the cable of FIG. 14 is tightened;
  • FIG. 17 is a cross-sectional view of the separation structure of the fixed head and the inner core tube when the cable is loosened according to an embodiment of the present invention
  • FIG. 18 is a schematic diagram of the structure of the fitting of the embedded section and the spring in a state where the fixed head is separated from the inner core tube according to an embodiment of the present invention
  • FIG. 19 is an enlarged schematic view of the state of the separation structure of the fixed head and the inner core tube when the pull wire of FIG. 17 is loosened;
  • FIG. 20 is a schematic structural diagram of an artificial valve loading process according to an embodiment of the present invention.
  • FIG. 21 is a schematic structural diagram of an artificial valve release process according to an embodiment of the present invention.
  • FIG. 22 is a schematic structural diagram of an artificial valve release process according to an embodiment of the present invention.
  • a delivery catheter for an artificial valve provided by an embodiment of the present invention includes a first component and a second component.
  • the first component includes a sheath tube 12 that can receive the artificial valve 3, and the sheath A guide head 11 fixedly connected to one end of the tube 12 and an inner core tube 16 fixedly connected to the guide head 11 and located in the cavity of the sheath tube 12;
  • the second assembly includes an outer tube 13, located at the outer tube The inner tube 15 in the cavity of 13 and the fixed head 14 fixedly connected to the inner tube 15, the inner core tube 16 is arranged in the cavity of the inner tube 15.
  • the sheath 12 of the present invention is smoothly and fixedly connected to the guide head 11.
  • the guide head 11 has a streamlined shape structure, which can avoid scratching the inner wall of the blood vessel, and also helps guide the entire delivery catheter to advance along the blood vessel channel.
  • a circumferential positioning fit is formed between the sheath tube 12 or the inner core tube 16 and the fixed head 14 of the present invention.
  • the inner core tube 16 drives the guide head 11 and the sheath tube 12 to perform an axial movement, so as to realize the loading and release of the artificial valve.
  • the inner core tube 16 is moved in the circumferential direction, it can drive the guide head 11, the sheath tube 12 and the fixed head 14 to rotate cooperatively as a whole to achieve the purpose of adjusting the circumferential angle of the artificial valve 3 to be released.
  • the inner tube 15 and the outer tube 13 remain stationary to maintain the three-dimensional configuration required for positioning of the delivery device, which improves the accuracy of the prosthetic valve 3 release positioning.
  • an artificial valve delivery device provided by an embodiment of the present invention includes a handle 2 and a delivery catheter 1 connected to the handle 2.
  • the present invention refers to the direction toward the delivery catheter 1 as the distal end, and the direction toward the handle 2 as the proximal end.
  • the handle 2 of the present invention includes an inner core tube movable part 21 and a fixed connector 22, and the inner core tube movable part 21 is connected to the inner core tube 16 for controlling the axis of the inner core tube 16 Moving in the direction or the circumferential direction, the fixed connecting member 22 is fixedly connected to the inner tube 15.
  • the present invention drives the bearing 2 to drive the circumferential rotation of the inner core tube movable member 21 through the handle 2, so that the inner core tube 16 drives the guide head 11, the sheath tube 12 and the fixed head 14 to coordinately rotate as a whole. Adjust the match between the artificial valve 3 and the native annulus.
  • the handle 2 drives the bearing to drive the axial movement of the fixed connecting member 22, so that the inner core tube 16 drives the guide head 11 and the sheath tube 12 to move axially relative to the inner tube 15 to realize the valve prosthesis 3 Load and release.
  • the driving of the handle in the embodiment of the present invention may be performed by means of electric driving or manual driving.
  • the implementation manner of forming the circumferential positioning cooperation between the sheath tube 12 or the inner core tube 16 and the fixed head 14 specifically includes the following four types: [0054] Embodiment 1: As shown in FIGS. 5-6, the inner wall of the fixed head 14 and the outer wall of the inner core tube 16 form a nested structure, and the nested structure can realize the fixed head 14 and the inner core tube 16 in the periphery Upward fixation. Specifically, the inner wall of the fixing head 14 is provided with protrusions or grooves (C), and the outer wall of the inner core tube 16 is provided with grooves or protrusions that cooperate with the inner wall protrusions or grooves of the fixing head 14.
  • C protrusions or grooves
  • the shapes of the protrusions or grooves on the inner wall of the fixed head 14 and the outer wall of the inner core tube 16 may be square, triangular, circular, or other irregular patterns.
  • the number of protrusions or grooves may be one or more.
  • the plurality of protrusions or grooves may be the same shape or different shapes, and may be evenly distributed in the circumferential direction of the inner wall of the fixed head 14 and the outer wall of the inner core tube 16, or may be uneven They are distributed on the inner wall of the fixed head 14 and the outer wall of the inner core tube 16 in the circumferential direction.
  • a plurality of protrusions or grooves are evenly distributed in the circumferential direction of the inner wall of the fixing head 14 and the outer wall of the inner core tube 16.
  • the concave-convex shape of the fixed head 14 and the inner core tube 16 can be changed according to the embodiment of the present invention, because the wall thickness of the inner core tube 16 is smaller, the outer wall of the inner core tube 16 is made into a convex structure. More excellent choice.
  • Embodiment 2 As shown in FIGS. 7-8, the inner wall of the sheath tube 12 and the outer wall of the fixed head 14 form a nested structure, and the nested structure can realize the circumferential direction of the sheath tube 12 and the fixed head 14 in the circumferential direction fixed.
  • the inner wall of the sheath tube 12 is provided with protrusions or grooves (C′)
  • the outer wall of the fixing head 14 is provided with grooves or protrusions that cooperate with the inner wall protrusions or grooves of the sheath tube 12.
  • the shapes of the protrusions or grooves on the inner wall of the sheath tube 12 and the outer wall of the fixing head 14 may be square, triangular, circular, or other irregular patterns.
  • the number of protrusions or grooves may be one or more.
  • the plurality of protrusions or grooves may be the same shape or different shapes, and may be uniformly distributed in the circumferential direction of the outer wall of the fixed head 14 and the inner wall of the sheath tube 12, or may be unevenly distributed In the circumferential direction of the outer wall of the fixed head 14 and the inner wall of the sheath tube 12.
  • a plurality of protrusions or grooves are evenly distributed on the outer wall of the fixed head 14 and the inner wall of the sheath tube 12 in the circumferential direction.
  • the concave-convex shape of the sheath 12 and the fixed head 14 of the embodiment of the present invention can be converted, but because the thickness of the sheath 12 tube material is small, it is more excellent to make the inner wall of the sheath 12 into a convex structure s Choice.
  • Embodiment 3 As shown in FIG. 9, the outer wall of the fixing head 14 is provided with at least one embedded section 141.
  • the friction force generated between the embedding section 141 and the sheath tube 12 is greater than the friction force generated between the valve and the sheath tube 12, so that the fixation
  • the frictional force generated by the head 14 and the sheath 12 is greater than the valve release force and recovery force.
  • the sheath 12 and the fixed head 14 are locked by friction to achieve coordinated rotation.
  • a certain section or sections of material with a high friction coefficient is embedded in the outer wall of the fixed head 14, and the outer diameter of the insertion section 141 may be changed to achieve frictional locking and unlocking with the sheath tube 12.
  • the static friction coefficient between the embedding section 141 and the sheath 12 ranges from 0.1 to 1.5.
  • the embedding section 141 of the present invention includes a first strip-shaped unit 1411 and a second strip-shaped unit 1412.
  • the first strip-shaped unit 1411 and the second strip-shaped unit 1412 A first spring 1421 and a second spring 1422 are also connected between them.
  • the embodiment of the present invention further includes a pull wire 142, the pull wire 142 is disposed at the first strip-shaped unit 1411 and the second strip-shaped unit 1412 at the connection with the first spring 1421 or the second spring 1422 .
  • the first strip-shaped unit 1411 and the second strip-shaped unit 14 12 are arranged on the outer wall of the fixed head 14 in an axisymmetric distribution, which is convenient for the pull wire 142 to connect all the embedded segments on one side .
  • Embodiment 4 As shown in FIGS. 14-19, the inner wall of the fixed head 14 is provided with at least one embedded section 141, and the friction force generated between the embedded section 141 and the inner core tube 16 is greater than that of the valve and the inner core tube The frictional force generated between the 16 and the frictional force generated by the fixed head 14 and the inner core tube 16 is greater than the valve release force and the recovery force. In this embodiment, the fixed head 14 and the inner core tube 16 are locked by friction to achieve coordinated rotation.
  • a certain section or sections of material with a high friction coefficient is embedded in the inner wall of the fixed head 14, and the outer diameter of the embedded section 141 may be changed to achieve frictional locking and unlocking with the outer wall of the inner core tube 16.
  • the static friction coefficient between the embedding section 141 and the inner core tube 16 ranges from 0.1 to 1.5.
  • the embedding section 141 of the present invention includes a first strip-shaped unit 1411 and a second
  • the strip-shaped unit 1412 has two parts.
  • a first spring 1421 and a second spring 1422 are also connected between the first strip-shaped unit 1411 and the second strip-shaped unit 1412.
  • the embodiment of the present invention further includes a pull wire 142, the pull wire 142 is disposed at the first strip-shaped unit 1411 and the second strip-shaped unit 1412 at the connection with the first spring 1421 or the second spring 1422 .
  • the first strip-shaped unit 1411 and the second strip-shaped unit 14 12 are arranged on the inner wall of the fixed head 14 in an axially symmetrical distribution, which is convenient for the pull wire 142 to connect all the embedded segments on one side .
  • the pull wire 142 is located between the inner tube 15 and the inner core tube 16, and is connected to the handle 2.
  • the inner tube 15 is preferably a multi-lumen tube.
  • the pull wire 142 may be connected to the handle 2 through the inner core tube 16.
  • the inner core tube 16 is preferably a multi-lumen tube.
  • the pull wire 142 may be a single-strand wire or a multi-strand wire, including but not limited to a single solid metal wire, a multi-strand wound metal rope, and the like.
  • the present invention can axially pull the pull wire 142 to adjust the outer diameter of the embedded section 141.
  • the fixed head 14 and the inner tube 15 of the present invention are connected by a bearing or an elastic material.
  • Elastic materials include but are not limited to silicone materials, PU materials, Pebax nylon elastomer engineering polymers, and so on.
  • the fixed head 14 and the inner tube 15 are connected by a bearing, which can realize unlimited rotation in the circumferential direction.
  • the fixed head 14 and the inner tube 15 are connected by a spring or an elastic material, and have a limit angle when rotating in the circumferential direction. The limit angle will be determined according to the characteristics of the spring or the elastic material itself.
  • the handle 2 drives the bearing to drive the axial movement of the inner core tube movable part 21, so that the inner core tube 16 drives the guide head 11 and the sheath tube 12 to move axially relative to the inner tube 15 to achieve Loading and release of artificial valve 3.
  • the bearing 2 drives the bearing to drive the circumferential rotation of the movable member 21 of the inner core tube, so that the inner core tube 16 drives the guide head 11, the sheath tube 12 and the fixed head 14 to rotate cooperatively to realize the adjustment of the release angle of the artificial valve 3, In order to achieve the purpose of precise release.
  • the outer tube 13 of the present invention may be a polymer tube or a composite tube of metal and polymer and other controllable bending tubes.
  • the outer tube 13 is a polymer composite tube provided with a metal structure on the inner surface, at least one metal wire is embedded in the outer tube 13, and the bending angle, position and direction of the outer tube 13 are controlled by drawing different metal wires .
  • multiple metal wires are embedded in the controllable bending pipe.
  • the artificial valve loading process in the embodiment of the present invention is as follows: As shown in FIG. 20, driving the handle 2 causes the inner core tube 16 to drive the guide head 11 and the sheath tube 12 to move distally to expose the fixed head 14, and then expands itself The artificial valve 3 is stuck in the fixed head 14, and the artificial valve 3 can be stabilized by means of an auxiliary loading tool. After the artificial valve 3 is stabilized, the inner core tube 16 is driven to move proximally until the sheath 12 completely wraps the artificial valve 3, and The distal surface of the artificial valve 3 bears against the end surface of the guide head 11 and the artificial valve 3 is loaded.
  • the artificial valve delivery process of the embodiment of the present invention is as follows: The entire artificial valve delivery device is extended along the guide wire into the puncture port and into the human body. Then, along the vascular access of the femoral vein, the catheter assembly 1 is passed through the interatrial septum, and the sheath 12 is delivered to the diseased annulus.
  • the prosthetic valve release process is as follows: As shown in FIG. 21, first, the outer tube 13 is used to control the bending. After the adjustment is in place, the outer tube 13 is fixed. At this time, the inner core tube 16 is driven to rotate circumferentially by the handle 2, and the circumferential rotation of the inner core tube 16 can simultaneously drive the guide head 11, the sheath tube 12, and the fixed head 14 to coordinately rotate, thereby adjusting the artificial valve 3 and the native valve The relative position of the annulus to ensure that the artificial valve better fits the native annulus.
  • the handle 2 drives the inner core tube 16 to drive the guide head 11 and the sheath 12 to move distally, and the prosthetic valve 3 is released, until the prosthetic valve 3 is completely released to the designated position and detached from the delivery system.
  • the inflow channel 32 of the artificial valve 3 is first released, and as the sheath 12 continues to move, the outflow channel of the artificial valve 3 33 is slowly released until the proximal end of the sheath 12 moves to the fixed head 14 to expose the fixed head 14 and the artificial valve 3 is completely released.
  • the release of the artificial valve 3 can be suspended at any time, and the rotation action of the circumferential alignment of the inner core tube 16 can be switched to better achieve the artificial valve 3 Real-time alignment and precise release.
  • the inner core tube 16 of the embodiment of the present invention can drive the sheath tube 12 and the fixed head 14 to move freely in the circumferential direction to adjust the position of the artificial valve 3 having an irregular cross section.
  • the inner core tube 16 can drive the sheath tube 12 to move freely in the axial direction, while the fixed head 14 remains fixed in the axial direction, so as to realize the loading and releasing of the artificial valve 3,
  • the beneficial effects that the inner core tube 16 and the fixed head 14 cooperate with each other in the circumferential direction and do not interfere with each other in the axial direction, and the fixed head 14 is axially fixed by the inner tube 15 and do not interfere in the circumferential direction are achieved.
  • the overall configuration of the delivery device remains unchanged, that is, the artificial valve can move in the circumferential direction under the condition that the outer control bends and remains immobile, thereby solving the problem of the accurate release of the irregular cross-section artificial valve.

Abstract

一种人工瓣膜的输送导管,包括外管(13)、内管(15)、内芯管(16)和可收容人工瓣膜(3)的鞘管(12);内芯管(16)位于鞘管(12)和内管(15)的腔中,内芯管(16)通过引导头(11)与鞘管(12)的一端固定连接;内管(15)上设置有固定头(14),鞘管(12)或内芯管(16)与固定头(14)之间形成周向定位配合,使得内芯管(16)在周向转动时带动引导头(11)、鞘管(12)以及固定头(14)一体转动。用于调整人工瓣膜释放周向角度的同时维持定位所需的三维构型,提高人工瓣膜释放定位的准确性。

Description

一种人工瓣膜的输送导管及输送装置 技术领域
[0001] 本发明涉及医疗器械技术领域, 具体涉及一种人工瓣膜的输送导管及输送装置 背景技术
[0002] 随着社会经济的发展和人口的老龄化, 瓣膜性心脏病的发病率明显增加, 研究 表明 75岁以上的老年人群瓣膜性心脏病发病率高达 13.3%。 目前, 采用传统外科 手术治疗仍是重度瓣膜病变患者的首选治疗手段, 但是对于高龄、 合并多器官 疾病、 有开胸手术史以及心功能较差的患者来说, 传统外科手术的风险大、 死 亡率高, 部分患者甚至没有手术的机会。 经导管心脏瓣膜的置换术具有无需开 胸、 创伤小、 患者恢复快等优点, 受到了专家学者的广泛关注。
发明概述
技术问题
[0003] 心脏瓣膜置换手术中, 需要对人工瓣膜进行精确的释放。 由于人体解剖结构复 杂, 人工瓣膜常常被设计成不规则形状。 例如, 为了实现人工瓣膜的锚固, 将 其设计成贴合解剖结构的形状, 支架的横截面设计成 D型、 多边形等。 为了让不 规则截面的人工瓣膜准确释放到解剖位置, 需要输送器能够调节人工瓣膜的角 度。 但是, 由于股动脉、 股静脉的输送通路非直线型, 且输送装置的最终构型 不在一个平面上, 因此, 对于传统的输送系统来说, 无法同时实现周向旋转且 保持构型不变。
问题的解决方案
技术解决方案
[0004] 针对上述现有技术的缺点, 本发明的目的是提供一种新型人工瓣膜的输送导管 及输送装置, 以解决不规则截面的人工瓣膜难以精确释放的问题。
[0005] 根据本发明的一个方面, 提供了一种人工瓣膜的输送导管, 包括第一组件和第 二组件, 所述第一组件包括可收容人工瓣膜的鞘管、 与所述鞘管的一端固定连 接的引导头以及与所述引导头固定连接且位于所述鞘管的腔中的内芯管; 所述 第二组件包括外管、 位于所述外管的腔中的内管以及与所述内管固定连接的固 定头, 所述内芯管布置在所述内管的腔中, 所述鞘管或所述内芯管与所述固定 头之间形成周向定位配合。
[0006] 进一步地, 上述人工瓣膜的输送导管, 所述固定头的内壁与所述内芯管的外壁 形成嵌套式结构。
[0007] 进一步地, 上述人工瓣膜的输送导管, 所述固定头的内壁设有凸起或凹槽, 所 述内芯管的外壁设有与所述固定头的内壁凸起或凹槽相配合的凹槽或凸起。
[0008] 进一步地, 上述人工瓣膜的输送导管, 所述鞘管的内壁与所述固定头的外壁形 成嵌套式结构。
[0009] 进一步地, 上述人工瓣膜的输送导管, 所述鞘管的内壁设有凸起或凹槽, 所述 固定头的外壁设有与所述鞘管的内壁凸起或凹槽相配合的凹槽或凸起。
[0010] 进一步地, 上述人工瓣膜的输送导管, 所述固定头的外壁或内壁设有至少一段 嵌入段, 所述嵌入段与所述鞘管或所述内芯管之间产生的摩擦力大于瓣膜与所 述鞘管或所述内芯管之间产生的摩擦力。
[0011] 进一步地, 上述人工瓣膜的输送导管, 所述嵌入段与所述鞘管或所述内芯管之 间的静摩擦系数的范围为 0.1 - 1.5。
[0012] 进一步地, 上述人工瓣膜的输送导管, 所述嵌入段包括第一条状单元和第二条 状单元, 所述第一条状单元和所述第二条状单元之间连接有第一弹簧和第二弹 賛。
[0013] 进一步地, 上述人工瓣膜的输送导管, 所述输送导管还包括拉线, 所述拉线设 置于所述第一条状单元和第二条状单元在与所述第一弹簧或所述第二弹簧的连 接处。
[0014] 进一步地, 上述人工瓣膜的输送导管, 所述拉线位于所述内管与所述内芯管之 间, 所述内管为多腔管。
[0015] 进一步地, 上述人工瓣膜的输送导管, 所述拉线位于所述内芯管内, 所述内芯 管为多腔管。
[0016] 进一步地, 上述人工瓣膜的输送导管, 所述第一条状单元和所述第二条状单元 在所述固定头的外壁或内壁呈轴对称分布设置。
[0017] 进一步地, 上述人工瓣膜的输送导管, 所述固定头与所述内管之间通过轴承或 弹性材料连接。
[0018] 进一步地, 上述人工瓣膜的输送导管, 所述外管为高分子管或金属与高分子的 复合管。
[0019] 根据本发明的另一个方面, 提供了一种人工瓣膜的输送装置, 包括手柄以及与 所述手柄相连接的输送导管, 所述手柄包括内芯管活动部件和固定连接件, 所 述内芯管活动部件和所述内芯管连接, 用于控制所述内芯管的轴向或周向运动 , 所述固定连接件与所述内管固定连接。
[0020] 进一步地, 上述人工瓣膜的输送装置, 还包括拉线, 所述拉线位于所述内管与 所述内芯管之间, 并连接至所述手柄, 或所述拉线穿过所述内芯管连接至所述 手柄。
[0021] 与现有技术相比, 本发明人工瓣膜的输送导管, 鞘管或内芯管与固定头之间形 成周向定位配合, 可以实现内芯管在周向转动时带动引导头、 鞘管以及固定头 整体做协同转动, 达到了调整人工瓣膜释放周向角度的目的。 此时, 保持内管 和外管不动, 维持定位所需的三维构型, 提升了人工瓣膜释放定位的准确性。 在调整到位后, 内芯管在固定头内可沿轴向运动, 从而带动引导头和鞘管做轴 向运动, 以达到释放人工瓣膜的目的。 本发明提供的人工瓣膜输送导管可以将 不规则截面的人工瓣膜精确释放于病变位置, 提高了不规则截面的人工瓣膜的 释放精度。
发明的有益效果
对附图的简要说明
附图说明
[0022] 图 1为本发明实施例人工瓣膜输送导管结构示意图;
[0023] 图 2为本发明实施例鞘管或内芯管与固定头周向配合结构剖视图;
[0024] 图 3为本发明实施例人工瓣膜输送装置结构示意图;
[0025] 图 4为本发明实施例手柄结构示意图;
[0026] 图 5为本发明实施例固定头与内芯管嵌套配合结构剖视图; [0027] 图 6为本发明实施例固定头与内芯管凹凸形状配合结构示意图;
[0028] 图 7为本发明实施例鞘管与固定头嵌套配合结构剖视图;
[0029] 图 8为本发明实施例鞘管与固定头凹凸形状配合结构示意图;
[0030] 图 9为本发明实施例固定头外壁设置嵌入段立体结构示意图;
[0031] 图 10为本发明实施例鞘管与固定头分离状态下, 嵌入段与弹簧配合结构示意图
[0032] 图 11为本发明实施例鞘管与固定头锁定状态下, 嵌入段与弹簧配合结构示意图
[0033] 图 12为本发明实施例拉线拉紧时鞘管与固定头分离结构状态示意图;
[0034] 图 13为本发明实施例拉线放松时鞘管与固定头锁定结构状态示意图;
[0035] 图 14为本发明实施例拉线拉紧时固定头与内芯管锁定结构剖视图;
[0036] 图 15为本发明实施例固定头与内芯管锁定状态下, 嵌入段与弹簧配合结构示意 图;
[0037] 图 16为图 14拉线拉紧时固定头与内芯管锁定结构状态的放大示意图;
[0038] 图 17为本发明实施例拉线放松时固定头与内芯管分离结构剖视图;
[0039] 图 18为本发明实施例固定头与内芯管分离状态下, 嵌入段与弹簧配合结构示意 图;
[0040] 图 19为图 17拉线放松时固定头与内芯管分离结构状态的放大示意图;
[0041] 图 20为本发明实施例人工瓣膜装载过程结构示意图;
[0042] 图 21为本发明实施例人工瓣膜释放过程结构示意图;
[0043] 图 22为本发明实施例人工瓣膜释放过程结构示意图;
[0044] 1-输送导管; 2 -手柄; 3 -人工瓣膜; 11-引导头; 124肖管; 13 -外管; 14 -固定头
; 15 -内管; 16 -内芯管; 21 -内芯管活动部件; 22 -固定连接件; 141 -嵌入段; 141 1-第一条状单元; 1412 -第二条状单元; 1421 -第一弹簧; 1422 -第二弹簧; 142 -拉 线。
发明实施例
本发明的实施方式
[0045] 为了使本发明的创作特征、 技术手段与达成目的易于明白理解, 以下结合具体 实施例进一步阐述本发明。
[0046] 如图 1所示, 本发明实施例提供的人工瓣膜的输送导管, 包括第一组件和第二 组件, 所述第一组件包括可收容人工瓣膜 3的鞘管 12、 与所述鞘管 12的一端固定 连接的引导头 11以及与所述引导头 11固定连接且位于所述鞘管 12的腔中的内芯 管 16; 所述第二组件包括外管 13、 位于所述外管 13的腔中的内管 15以及与所述 内管 15固定连接的固定头 14, 所述内芯管 16布置在所述内管 15的腔中。
[0047] 优选地, 本发明鞘管 12与引导头 11圆滑固定连接。 引导头 11具有流线型外形结 构, 可以避免划伤血管内壁, 也有利于引导整个输送导管沿血管通道推进。
[0048] 如图 2所示, 本发明鞘管 12或内芯管 16与固定头 14之间形成周向定位配合。 内 芯管 16在做轴向运动的时候, 带动引导头 11和鞘管 12做轴向运动, 以实现人工 瓣膜的装载和释放。 内芯管 16在做周向运动的时候, 可带动引导头 11、 鞘管 12 以及固定头 14整体做协同转动, 达到了调整人工瓣膜 3释放周向角度的目的。 此 时, 内管 15和外管 13保持不动, 以维持输送装置定位所需的三维构型, 提升了 人工瓣膜 3释放定位的准确性。
[0049] 如图 3所示, 本发明实施例提供的一种人工瓣膜的输送装置包括手柄 2以及与所 述手柄 2相连接的输送导管 1。 实施中, 本发明将往输送导管 1的方向称为远端, 往手柄 2的方向称为近端。
[0050] 如图 4所示, 本发明手柄 2包括内芯管活动部件 21和固定连接件 22, 内芯管活动 部件 21和内芯管 16连接, 用于控制所述内芯管 16的轴向或周向运动, 固定连接 件 22与内管 15固定连接。
[0051] 具体实施中, 本发明通过手柄 2驱动轴承带动内芯管活动部件 21的周向转动, 进而使内芯管 16带动引导头 11、 鞘管 12和固定头 14整体做协同转动, 来调整人 工瓣膜 3与原生瓣环的匹配。 在调整到位后, 手柄 2驱动轴承带动固定连接件 22 的轴向移动, 进而使内芯管 16带动引导头 11和鞘管 12相对于内管 15做轴向移动 , 实现对瓣膜假体 3的装载和释放。
[0052] 可选地, 本发明实施例手柄驱动可以采用电动驱动或者手动驱动的方式进行。
[0053] 本发明实施例, 鞘管 12或内芯管 16与固定头 14之间形成周向定位配合的实现方 式具体包括以下四种: [0054] 实施例一: 如图 5-6所示, 固定头 14的内壁与内芯管 16的外壁形成嵌套式结构 , 该嵌套式结构可以实现固定头 14与内芯管 16在周向上的固定。 具体地, 固定 头 14的内壁设有凸起或凹槽 (C) , 内芯管 16的外壁设有与固定头 14的内壁凸起 或凹槽相配合的凹槽或凸起。
[0055] 可选地, 固定头 14内壁和内芯管 16外壁的凸起或凹槽的形状可以为方形、 三角 形、 圆形或其他不规则图形等。 而且, 凸起或凹槽的数量可以为 1个, 也可以为 多个。
[0056] 可选地, 多个凸起或凹槽可以是相同的形状, 也可以是不同的形状, 且可以均 匀分布在固定头 14内壁和内芯管 16外壁的周向上, 也可以不均匀分布于固定头 1 4内壁和内芯管 16外壁的周向上。 优选地, 多个凸起或凹槽均匀分布于固定头 14 内壁和内芯管 16外壁的周向上。
[0057] 本发明实施例固定头 14与内芯管 16的凹凸形状配合虽然可以转换, 但因为内芯 管 16管材的壁厚较小, 故将内芯管 16的外壁做成凸起结构是更为优异的选择。
[0058] 实施例二: 如图 7-8所示, 鞘管 12的内壁与固定头 14的外壁形成嵌套式结构, 该嵌套式结构可以实现鞘管 12与固定头 14在周向上的固定。 具体地, 鞘管 12的 内壁设有凸起或凹槽 (C') , 固定头 14的外壁设有与鞘管 12的内壁凸起或凹槽相 配合的凹槽或凸起。
[0059] 可选地, 鞘管 12内壁和固定头 14外壁的凸起或凹槽的形状可以为方形、 三角形 、 圆形或其他不规则图形等。 而且, 凸起或凹槽的数量可以为 1个, 也可以为多 个。
[0060] 可选地, 多个凸起或凹槽可以是相同的形状, 也可以是不同的形状, 且可以均 匀分布在固定头 14外壁和鞘管 12内壁的周向上, 也可以不均匀分布于固定头 14 外壁和鞘管 12内壁的周向上。 优选地, 多个凸起或凹槽均匀分布于固定头 14外 壁和鞘管 12内壁的周向上。
[0061] 本发明实施例鞘管 12与固定头 14的凹凸形状配合虽然可以转换, 但因为鞘管 12 管材的壁厚较小, 故将鞘管 12的内壁做成凸起结构是更为优异的选择。
[0062] 实施例三: 如图 9所示, 固定头 14的外壁设有至少一段嵌入段 141。 所述嵌入段 141与鞘管 12之间产生的摩擦力大于瓣膜与鞘管 12之间产生的摩擦力, 以使固定 头 14与鞘管 12产生的摩擦力大于瓣膜释放力与回收力。 本实施例鞘管 12与固定 头 14通过摩擦力锁定来实现协同转动。
[0063] 具体地, 在固定头 14的外壁嵌入某一段或数段摩擦系数高的材料, 该嵌入段 14 1的外径可以变化, 以实现其与鞘管 12的摩擦锁定和解锁。
[0064] 优选地, 上述人工瓣膜的输送装置中, 所述嵌入段 141与鞘管 12之间的静摩擦 系数的范围为 0.1-1.5。
[0065] 进一步地, 如图 10-11所示, 本发明嵌入段 141包括第一条状单元 1411和第二条 状单元 1412两部分, 第一条状单元 1411和第二条状单元 1412之间还连接有第一 弹簧 1421和第二弹簧 1422。
[0066] 进一步地, 本发明实施例还包括拉线 142, 所述拉线 142设置于所述第一条状单 元 1411和第二条状单元 1412在与第一弹簧 1421或第二弹簧 1422的连接处。
[0067] 实施中, 如图 10、 12所示, 在拉线 142拉紧时, 第一弹簧 1421 (或第二弹簧 142 2) 被压缩, 嵌入段 141的第一条状单元 1411和第二条状单元 1412两个部分被迫 靠近, 固定头 14与鞘管 12分离, 两者的运动不受对方影响。 如图 11、 13所示, 在拉线 142放松时, 嵌入段 141的第一条状单元 1411和第二条状单元 1412两个部 分向外抵住鞘管 12, 固定头 14与鞘管 12通过嵌入段 141的摩擦力锁定来实现协同 转动。
[0068] 优选地, 本发明人工瓣膜的输送装置中, 第一条状单元 1411和第二条状单元 14 12在固定头 14的外壁呈轴对称分布设置, 方便拉线 142连接单边所有嵌入段。
[0069] 实施例四: 如图 14-19所示, 固定头 14的内壁设有至少一段嵌入段 141, 所述嵌 入段 141与内芯管 16之间产生的摩擦力大于瓣膜与内芯管 16之间产生的摩擦力, 以使固定头 14与内芯管 16产生的摩擦力大于瓣膜释放力与回收力。 本实施例固 定头 14与内芯管 16之间通过摩擦力锁定来实现协同转动。
[0070] 具体地, 在固定头 14的内壁嵌入某一段或数段摩擦系数高的材料, 该嵌入段 14 1的外径可以变化, 以实现其与内芯管 16外壁的摩擦锁定和解锁。
[0071] 优选地, 上述人工瓣膜的输送装置中, 所述嵌入段 141与内芯管 16之间的静摩 擦系数的范围为 0.1-1.5。
[0072] 进一步地, 如图 15、 18所示, 本发明嵌入段 141包括第一条状单元 1411和第二 条状单元 1412两部分, 第一条状单元 1411和第二条状单元 1412之间还连接有第 一弹簧 1421和第二弹簧 1422。
[0073] 进一步地, 本发明实施例还包括拉线 142, 所述拉线 142设置于所述第一条状单 元 1411和第二条状单元 1412在与第一弹簧 1421或第二弹簧 1422的连接处。
[0074] 实施中, 如图 14-16所示, 在拉线 142拉紧时, 第一弹簧 1421 (或第二弹簧 1422 ) 被压缩, 嵌入段 141的第一条状单元 1411和第二条状单元 1412两个部分被迫靠 近, 固定头 14上的嵌入段 141与内芯管 16的外壁贴紧, 固定头 14与内芯管 16通过 嵌入段 141的摩擦力锁定, 可以做协同运动。 如图 17-19所示, 在拉线 142放松时 , 嵌入段 141的两端通过弹簧的作用力分开, 第一条状单元 1411和第二条状单元 1412远离内芯管 16的外壁, 此时两者的运动不受影响。
[0075] 优选地, 本发明人工瓣膜的输送装置中, 第一条状单元 1411和第二条状单元 14 12在固定头 14的内壁呈轴对称分布设置, 方便拉线 142连接单边所有嵌入段。
[0076] 进一步地, 上述人工瓣膜的输送装置中, 拉线 142位于内管 15与内芯管 16之间 , 并连接至手柄 2。 此时, 内管 15优选多腔管。 可选地, 拉线 142也可穿过内芯 管 16连接至手柄 2。 此时, 内芯管 16优选为多腔管。
[0077] 优选地, 拉线 142可以为单股线或多股线, 包括但不限于单根实心金属丝、 多 股缠绕的金属绳等。 实施中, 本发明轴向拉动拉线 142, 可以调整嵌入段 141的 外径。
[0078] 可选地, 本发明固定头 14与内管 15之间通过轴承或弹性材料连接。 弹性材料包 括但不限于硅胶材料、 PU材料、 Pebax尼龙弹性体工程聚合物等。 优选地, 固定 头 14与内管 15之间通过轴承连接, 可以实现周向无限制旋转。 固定头 14与内管 1 5之间通过弹簧或弹性材料连接, 周向旋转时具有极限角度, 该极限角度将根据 弹簧或弹性材料本身的特性决定。
[0079] 本发明实施例通过手柄 2驱动轴承带动内芯管活动部件 21的轴向移动, 进而使 内芯管 16带动引导头 11和鞘管 12相对于内管 15做轴向移动, 实现对人工瓣膜 3的 装载和释放。 另外, 通过手柄 2驱动轴承带动内芯管活动部件 21的周向转动, 使 得内芯管 16带动引导头 11、 鞘管 12和固定头 14做协同转动, 实现对于人工瓣膜 3 释放角度的调整, 以达到精准释放的目的。 [0080] 可选地, 本发明外管 13可以为高分子管或金属与高分子的复合管等可控弯管材 。 实施中, 外管 13是内表面设置有金属结构的高分子复合管, 在外管 13内埋设 有至少一根金属丝, 通过抽拉不同的金属丝来控制外管 13的弯曲角度、 位置及 方向。 优选地, 为了提升控弯的精准性, 在该可控弯管材内埋设多根金属丝。
[0081] 本发明实施例人工瓣膜装载过程如下: 如图 20所示, 驱动手柄 2使得内芯管 16 带动引导头 11和鞘管 12整体向远端移动至露出固定头 14, 然后将自膨式人工瓣 膜 3卡在固定头 14内, 可借助辅助装载工具稳定人工瓣膜 3 , 待人工瓣膜 3稳定后 , 驱动内芯管 16向近端移动, 直至鞘管 12完全包裹住人工瓣膜 3 , 且人工瓣膜 3 的远端面顶住引导头 11的端面, 人工瓣膜 3装载完毕。
[0082] 本发明实施例人工瓣膜输送过程如下: 沿着导丝将整个人工瓣膜输送装置伸入 穿刺口, 进入人体。 然后顺着股静脉的血管通路, 将导管组件 1穿过房间隔, 鞘 管 12被输送至病变瓣环处。
[0083] 本发明实施例人工瓣膜释放过程如下: 如图 21所示, 首先通过外管 13控弯, 待 调整到位后, 外管 13固定不动。 此时, 通过手柄 2驱动内芯管 16进行周向转动, 内芯管 16的周向转动可同时带动引导头 11、 鞘管 12以及固定头 14做协同转动, 从而调整人工瓣膜 3与原生瓣环的相对位置, 以保证人工瓣膜更好地贴合原生瓣 环。 在人工瓣膜 3周向调整到位后, 手柄 2驱动内芯管 16带动引导头 11和鞘管 12 向远端运动, 开始释放人工瓣膜 3 , 直至人工瓣膜 3完全释放到指定位置并脱离 输送系统。
[0084] 具体地, 如图 22所示, 鞘管 12在往远端移动的过程中, 人工瓣膜 3的流入道 32 先被释放, 随着鞘管 12的不断移动, 人工瓣膜 3的流出道 33慢慢被释放, 直到鞘 管 12的近端移动至固定头 14处, 露出固定头 14, 人工瓣膜 3才被完全释放。
[0085] 优选地, 本发明实施例在人工瓣膜释放过程中, 可随时暂停人工瓣膜 3的释放 , 并切换至内芯管 16周向对位的转动动作, 以更好地实现人工瓣膜 3的实时对位 与精确释放。
[0086] 综上, 本发明实施例内芯管 16可以驱动鞘管 12和固定头 14在周向上自由运动, 以调整截面不规则的人工瓣膜 3的位置。 同时, 内芯管 16可以驱动鞘管 12在轴向 上自由运动, 而固定头 14在轴向上保持不动, 以实现人工瓣膜 3的装载和释放, 达到了内芯管 16与固定头 14协同周向运动且轴向互不干涉、 固定头 14被内管 15 轴向固定且周向不受干涉的有益效果。
[0087] 本发明实施例在输送装置的整体构型保持不变, 即在外管控弯, 保持不动的情 况下, 人工瓣膜可以周向运动, 从而解决了不规则截面人工瓣膜的精确释放问 题。
[0088] 以上显示和描述了本发明的基本原理、 主要特征和本发明的优点。 本行业的技 术人员应该了解, 本发明不受上述实施例的限制, 上述实施例和说明书中描述 的只是说明本发明的原理, 在不脱离本发明精神和范围的前提下本发明还会有 各种变化和改进, 这些变化和改进都落入要求保护的本发明范围内。 本发明要 求保护范围由所附的权利要求书及其等同物界定。

Claims

权利要求书
[权利要求 1] 一种人工瓣膜的输送导管, 其特征在于, 包括第一组件和第二组件, 所述第一组件包括可收容人工瓣膜 (3) 的鞘管 (12) 、 与所述鞘管 (12) 的一端固定连接的引导头 (11) 以及与所述引导头 (11) 固定 连接且位于所述鞘管 (12) 的腔中的内芯管 (16) ; 所述第二组件包 括外管 (13) 、 位于所述外管 (13) 的腔中的内管 (15) 以及与所述 内管 (15) 固定连接的固定头 (14) , 所述内芯管 (16) 布置在所述 内管 (15) 的腔中, 所述鞘管 (12) 或所述内芯管 (16) 与所述固定 头 (14) 之间形成周向定位配合。
[权利要求 2] 根据权利要求 1所述的人工瓣膜的输送导管, 其特征在于, 所述固定 头 (14) 的内壁与所述内芯管 (16) 的外壁形成嵌套式结构。
[权利要求 3] 根据权利要求 2所述的人工瓣膜的输送导管, 其特征在于, 所述固定 头 (14) 的内壁设有凸起或凹槽, 所述内芯管(16) 的外壁设有与所 述固定头 (14) 的内壁凸起或凹槽相配合的凹槽或凸起。
[权利要求 4] 根据权利要求 1所述的人工瓣膜的输送导管, 其特征在于, 所述鞘管 (12) 的内壁与所述固定头 (14) 的外壁形成嵌套式结构。
[权利要求 5] 根据权利要求 4所述的人工瓣膜的输送导管, 其特征在于, 所述鞘管 (12) 的内壁设有凸起或凹槽, 所述固定头 (14) 的外壁设有与所述 鞘管 (12) 的内壁凸起或凹槽相配合的凹槽或凸起。
[权利要求 6] 根据权利要求 1所述的人工瓣膜的输送导管, 其特征在于, 所述固定 头 (14) 的外壁或内壁设有至少一段嵌入段 (141) , 所述嵌入段 (1 41) 与所述鞘管 (12) 或所述内芯管 (16) 之间产生的摩擦力大于瓣 膜与所述鞘管 (12) 或所述内芯管 (16) 之间产生的摩擦力。
[权利要求 7] 根据权利要求 6所述的人工瓣膜的输送导管, 其特征在于, 所述嵌入 段 (141) 与所述鞘管 (12) 或所述内芯管 (16) 之间的静摩擦系数 的范围为 0.1-1.5。
[权利要求 8] 根据权利要求 6或 7所述的人工瓣膜的输送导管, 其特征在于, 所述嵌 入段 (141) 包括第一条状单元 (1411) 和第二条状单元 (1412) , 所述第一条状单元 (1411) 和所述第二条状单元 (1412) 之间连接有 第一弹簧 (1421) 和第二弹簧 (1422) 。
[权利要求 9] 根据权利要求 8所述的人工瓣膜的输送导管, 其特征在于, 所述输送 导管还包括拉线 (142) , 所述拉线 (142) 设置于所述第一条状单元 (1411) 和所述第二条状单元 (1412) 在与所述第一弹簧 (1421) 或 所述第二弹簧 (1422) 的连接处。
[权利要求 10] 根据权利要求 9所述的人工瓣膜的输送导管, 其特征在于, 所述拉线 (142) 位于所述内管 (15) 与所述内芯管 (16) 之间, 所述内管 (1 5) 为多腔管。
[权利要求 11] 根据权利要求 9所述的人工瓣膜的输送导管, 其特征在于, 所述拉线 (142) 位于所述内芯管 (16) 内, 所述内芯管 (16) 为多腔管。
[权利要求 12] 根据权利要求 8所述的人工瓣膜的输送导管, 其特征在于, 所述第一 条状单元 (1411) 和所述第二条状单元 (1412) 在所述固定头 (14) 的外壁或内壁呈轴对称分布设置。
[权利要求 13] 根据权利要求 1所述的人工瓣膜的输送导管, 其特征在于, 所述固定 头 (14) 与所述内管 (15) 之间通过轴承或弹性材料连接。
[权利要求 14] 根据权利要求 1所述的人工瓣膜的输送导管, 其特征在于, 所述外管 (13) 为高分子管或金属与高分子的复合管。
[权利要求 15] 一种人工瓣膜的输送装置, 其特征在于, 包括手柄 (2) 以及与所述 手柄 (2) 相连接的如权利要求 1至 15任一项所述的输送导管, 所述手 柄 (2) 包括内芯管活动部件 (21) 和固定连接件 (22) , 所述内芯 管活动部件 (21) 和所述内芯管 (16) 连接, 用于控制所述内芯管 ( 16) 的轴向或周向运动, 所述固定连接件 (22) 与所述内管 (15) 固 定连接。
[权利要求 16] 根据权利要求 15所述的人工瓣膜的输送装置, 其特征在于, 还包括拉 线 (142) , 所述拉线 (142) 位于所述内管 (15) 与所述内芯管 (16 ) 之间, 并连接至所述手柄 (2) , 或所述拉线 (142) 穿过所述内芯 管 (16) 连接至所述手柄 (2) 。 WO 2020/135260 PCT/CN2019/127046
PCT/CN2019/127046 2018-12-27 2019-12-20 一种人工瓣膜的输送导管及输送装置 WO2020135260A1 (zh)

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