WO2022253020A1 - Dispositif auxiliaire et transporteur - Google Patents

Dispositif auxiliaire et transporteur Download PDF

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Publication number
WO2022253020A1
WO2022253020A1 PCT/CN2022/094401 CN2022094401W WO2022253020A1 WO 2022253020 A1 WO2022253020 A1 WO 2022253020A1 CN 2022094401 W CN2022094401 W CN 2022094401W WO 2022253020 A1 WO2022253020 A1 WO 2022253020A1
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WO
WIPO (PCT)
Prior art keywords
auxiliary device
transition section
main body
section
body section
Prior art date
Application number
PCT/CN2022/094401
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English (en)
Chinese (zh)
Inventor
连佰思
张兆夺
赵明杰
许思为
张昊昀
王丽文
袁振宇
苗铮华
Original Assignee
上海蓝脉医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海蓝脉医疗科技有限公司 filed Critical 上海蓝脉医疗科技有限公司
Publication of WO2022253020A1 publication Critical patent/WO2022253020A1/fr

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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
    • A61F2/01—Filters implantable into blood vessels
    • 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
    • A61F2/01—Filters implantable into blood vessels
    • A61F2/011—Instruments for their placement or removal
    • 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
    • A61F2/01—Filters implantable into blood vessels
    • A61F2/012—Multiple filtering units
    • 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
    • A61F2/01—Filters implantable into blood vessels
    • A61F2002/016—Filters implantable into blood vessels made from wire-like elements
    • 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
    • A61F2/01—Filters implantable into blood vessels
    • A61F2002/018—Filters implantable into blood vessels made from tubes or sheets of material, e.g. by etching or laser-cutting
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0067—Three-dimensional shapes conical

Definitions

  • the invention relates to the technical field of medical devices, in particular to an auxiliary device and a conveyor.
  • the inferior vena cava filter is a medical device implanted in the vena cava to trap thrombus and prevent the thrombus from moving up to the heart and lungs to prevent pulmonary embolism.
  • the performance and implantation method of the inferior vena cava filter have made great progress, but the inferior vena cava filter in the prior art still has the problem of inclination after release, which leads to the inability to effectively capture thrombus.
  • the object of the present invention is to provide an auxiliary device and a delivery device, which can be delivered into the body together with an implant, such as a filter, and used to assist the centering of the implant in the blood vessel during the release of the implant, avoiding The implant is tilted to improve thrombus capture.
  • an implant such as a filter
  • the present invention provides an auxiliary device for assisting the implant to be positioned in the target lumen in a predetermined posture when the implant is released;
  • the auxiliary device includes first transitions connected in succession in the axial direction A section, a main section and a second transition section, the outer diameter of the first transition section and the outer diameter of the second transition section gradually decrease along the direction away from the main section.
  • the outer diameter of at least a partial area of the main body section is greater than or equal to the maximum outer diameters of the first transition section and the second transition section.
  • first transition section and the second transition section are mirror-symmetrically arranged at both axial ends of the main body section.
  • the axial length of the first transition section is smaller than the axial length of the second transition section.
  • the auxiliary device further includes a first connecting ring coaxially connected to an end of the first transition section away from the main body section; and/or,
  • the auxiliary device further includes a second connecting ring coaxially connected to an end of the second transition section away from the main body section.
  • first transition section, the main body section and the second transition section are braided from wire.
  • a rhombus hole is formed on the main body section, the rhombus hole has a first inner angle and a second inner angle, and the angle bisector of the first inner angle is parallel to the axis of the main body section; when the auxiliary device In the expanded state, the angle of the first inner angle is greater than or equal to the angle of the second inner angle.
  • the number of the wires is 10-14, the side length of the rhombus hole is 1mm-1.5mm, and the angle of the first inner angle is 90°-160°; and/or, the wire The wire diameter of the material is 0.15 mm to 0.4 mm.
  • the outer diameter of the main body section is 16mm-30mm, and the axial length is 30mm-50mm.
  • the auxiliary device is cut from a pipe.
  • the minimum outer diameter of the auxiliary device is 1mm-2.3mm, the maximum outer diameter is 16mm-30mm, and the axial length is 45mm-60mm.
  • the auxiliary device is a self-expanding structure.
  • the present invention also provides a conveyor, including a conveying device and an auxiliary device as described in any one of the preceding items; the conveying device is movably connected to the auxiliary device, and is used to control the auxiliary device radially expand or contract; the delivery device is also used to connect to the implant;
  • the delivery device is configured as the delivery device for delivering the implant and the auxiliary device to a predetermined position of the target lumen, and the delivery device is also used for releasing the implant, and when releasing When the implant is used, the delivery device also controls the expansion of the auxiliary device and positions the implant at a corresponding predetermined position with a predetermined posture.
  • the auxiliary device and the conveyor of the present invention have the following advantages:
  • the aforementioned conveyor includes the auxiliary device, and the auxiliary device includes a first transition section, a main body section and a second transition section connected in sequence in the axial direction, and along the direction away from the main body section, the outer portion of the first transition section diameter and the outer diameter of the second transition section gradually decreases.
  • the auxiliary device can be used to improve the coaxiality of the implant and the target cavity, improve the thrombus capture effect, facilitate recovery, and improve curative effect .
  • Fig. 1 is a schematic structural diagram of an auxiliary device provided by the present invention according to an embodiment, in which the first transition section and the second transition section are mirror-symmetrically arranged;
  • Fig. 2 is a schematic structural view of the auxiliary device provided according to an embodiment of the present invention, in which the axial length of the first transition section is smaller than the axial length of the second transition section;
  • Fig. 3 is a schematic structural view of the main body section of the auxiliary device provided according to an embodiment of the present invention.
  • Fig. 4 is a partially enlarged schematic diagram of the main body section of the auxiliary device provided according to an embodiment of the present invention.
  • Fig. 5 is a schematic structural view of a conveyor provided by the present invention according to an embodiment
  • Fig. 6 is a schematic structural diagram of an auxiliary device provided according to another embodiment of the present invention, in which the first transition section and the second transition section are mirror-symmetrically arranged;
  • Fig. 7 is a schematic structural view of an auxiliary device according to another embodiment of the present invention, in which the axial length of the first transition section is smaller than the axial length of the second transition section;
  • Fig. 8 is a schematic diagram of the size of the auxiliary structure shown in Fig. 7;
  • Fig. 9 is a schematic structural view of a conveyor provided according to another embodiment of the present invention.
  • Fig. 10 is a schematic diagram of the use scene of the auxiliary device provided by the embodiment of the present invention.
  • the auxiliary device and the filter are delivered from the jugular vein to the inferior vena cava, and the auxiliary device is located at the proximal end of the filter;
  • Fig. 11 is a schematic diagram of the use scene of the auxiliary device provided by the embodiment of the present invention.
  • the auxiliary device and the filter are delivered from the femoral vein to the inferior vena cava, and the auxiliary device is located at the distal end of the filter.
  • 100-auxiliary device 110-first transition section, 120-main body section, 121-rhombic hole, 130-second transition section, 140-first connecting ring, 150-second connecting ring;
  • 310-tube assembly 311-inner tube, 312-outer tube, 321-limiting sleeve, 330-handle, 341-driving button, 342-first slider, 343-sliding groove, 350-sheath tube;
  • each embodiment of the content described below has one or more technical features respectively, but this does not mean that the inventor must implement all the technical features in any embodiment at the same time, or can only implement different embodiments separately. Some or all of the technical features. In other words, on the premise that the implementation is possible, those skilled in the art can selectively implement some or all of the technical features in any embodiment according to the disclosure of the present invention and depending on design specifications or implementation requirements, or Selectively implement a combination of some or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.
  • the singular forms “a”, “an” and “the” include plural objects, and the plural form “a plurality” includes two or more objects, unless the content clearly states otherwise.
  • the term “or” is generally used in the sense including “and/or”, unless the content clearly indicates otherwise, and the terms “install”, “connect” and “connect” should be To understand it in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • FIG. 1 , FIG. 2 , FIG. 6 and FIG. 7 show a schematic structural view of an auxiliary device 100 provided by an embodiment of the present invention.
  • the auxiliary device 100 includes a first transition section 110, a main section 120 and a second transition section 130 connected in sequence in the axial direction, along the direction away from the main section 120 , the outer diameter of the first transition section 110 and the outer diameter of the second transition section 130 gradually decrease.
  • the assisting device 100 is used to deliver the implant into the patient's body at the same time, and assist the implant to be positioned in the target lumen in a predetermined posture when the implant is released.
  • the implant is a filter 200 (as labeled in Figures 10 and 11).
  • the filter 200 is used to release in the inferior vena cava (ie, the aforementioned target lumen) to capture thrombus, preventing the thrombus from entering the heart and then entering the pulmonary artery to cause pulmonary embolism.
  • the filter 200 when the filter 200 is implanted in the inferior vena cava, it is hoped that the filter 200 can be positioned centrally in the vena cava to improve the thrombus capture effect, and the meaning of "centered" here means that the filter 200 is coaxial with the inferior vena cava ground layout.
  • the implant as the filter 200 as an example.
  • the auxiliary device 100 is arranged coaxially with the filter 200 and is delivered synchronously into the inferior vena cava, allowing radial expansion of the auxiliary device 100 into the main body section 120 before the filter 200 is fully released.
  • the junction with the first transition section 110 and the junction of the body section 120 and the second transition section 130 abut against the wall of the inferior vena cava, or make the body section 120 at least partially abut against On the wall of the inferior vena cava, until the auxiliary device 100 is coaxially arranged with the inferior vena cava, the release of the filter 200 at this time can improve the coaxiality of the filter 200 and the inferior vena cava, so that the Filter 200 may be positioned centrally within the inferior vena cava.
  • the specific usage process will be described in detail later.
  • the outer diameter of at least part of the main body section 120 should be greater than or equal to the first transition section 110 and the maximum outer diameter of the second transition section 130 .
  • the main body section 120 includes several cylindrical sections, and the outer diameter of each cylindrical section may be equal to that of the first transition section 110 and the second transition section 130
  • the maximum outer diameter is set so that the cylindrical section can abut against the wall of the inferior vena cava, and the main body section 120 also forms surface contact with the blood vessel wall, which enhances support and stability, and improves reliability.
  • the projection of the profile of the outer wall of the main body section 120 on a plane parallel to the axis of the main body section may also be a curve, as long as the main body section 120 can at least partially rest on the inferior vena cava after expansion It is sufficient to place the auxiliary device 100 centrally on the inferior vena cava.
  • the auxiliary device 100 has a self-expanding structure.
  • the self-expanding structure means that the structural member itself has good resilience, It deforms when it is stressed, and automatically springs back to its original shape when the pressure is removed.
  • the self-expanding structure is made of shape memory materials such as NiTi.
  • the first transition section 110 and the second transition section 130 are mirror-symmetrically arranged at two axial ends of the main body section 120 .
  • the axial lengths of the first transition section 110 and the second transition section 130 are not equal, for example, the axial length of the first transition section 110 less than the axial length of the second transition section 130 . It is preferable that the first transition section 110 is closer to the filter 200 during operation. The advantage of this setting is that the axial distance between the auxiliary device 100 and the filter 200 is shortened, which is beneficial to further provide the connection between the filter 200 and the lower filter 200. Concentricity of the vena cava.
  • the present invention does not limit the molding method of the auxiliary device 100 .
  • the first transition section 110 , the main body section 120 and the third transition section 130 are braided by wire material, and the main body section 120 preferably includes One of the cylindrical segments is convenient to form.
  • the auxiliary device 100 also includes a first connection ring 140 and a second connection ring 150 .
  • the first connecting ring 140 is coaxially arranged at the end of the first transition section 110 away from the main body section 120, and binds one end of the wire;
  • the second connecting ring 150 is coaxially arranged at the end of the main body section 120.
  • the second transition section 130 is remote from one end of the body section 120 and binds the other end of the wire.
  • a diamond-shaped hole 121 is formed on the main body section 120, and the rhombus-shaped hole 121 has a first internal angle ⁇ and a second internal angle ⁇ , wherein the The angle bisector of the first internal angle ⁇ is parallel to the axis of the main body section 120 , and the angle of the first internal angle ⁇ is greater than or equal to the angle of the second internal angle ⁇ .
  • the side length A of the diamond-shaped hole 121 , the angle of the inner corner, and the number of wires used together affect the anti-extrusion performance (ie, support strength) of the auxiliary device 100 .
  • the first internal angle ⁇ is fixed, the more the number of wires and the shorter the side length A, the stronger the anti-extrusion performance and the better the bending performance of the auxiliary device 100; the less the number of wires, The longer the side length A is, the weaker the extrusion resistance and the worse the bending performance of the auxiliary device 100 is.
  • the auxiliary device 100 needs to have better extrusion resistance and bending performance, and should also have a smaller radial dimension (referring to the radial dimension when the auxiliary device is in a compressed state).
  • the number of the wires is 10-14, and the diameter of the wires is 0.15mm-0.4mm, the side length A of the diamond-shaped hole 121 is 1mm-1.5mm, and the first interior angle ⁇ The angle is 90° ⁇ 160°.
  • the main body section 120 (when the main body section 120 includes a cylindrical segment) has an axial length L1 of 30mm-50mm and an outer diameter ⁇ 1 of 16mm-30mm when in the expanded state.
  • the braided auxiliary device 100 is relatively soft, and can be expanded according to the diameter of the inferior vena cava during expansion, reducing damage to the vessel wall.
  • the outer diameter of the auxiliary device 100 when compressed can be 1mm-2mm, and can be compressed in a sheath tube of 6F-10F for delivery.
  • the auxiliary device 100 can also be formed by cutting the pipe material, and when the pipe material is cut, the first transition section 110 can also be away from the One end of the main body section 120 forms the first connecting ring 140 , and the second connecting ring 150 is formed at an end of the second transition section 130 away from the main body section 120 .
  • the minimum outer diameter ⁇ 2 of the auxiliary device 100 (that is, the outer diameter of the first connecting ring 140 and the outer diameter of the second connecting ring 150) is 1 mm to 2.3 mm
  • the maximum outer diameter ⁇ 3 (that is, the maximum outer diameter of the main body section 120) is 16 mm to 30 mm
  • the axial length L 2 is 45 mm to 60 mm.
  • the embodiment of the present invention also provides a conveyor 10 , including a conveying device and the aforementioned auxiliary device 100 .
  • the delivery device is movably connected with the auxiliary device 100 and controls the radial expansion or contraction of the auxiliary device 100 .
  • the delivery device is also used to connect with the filter 200 .
  • the delivery device is used to deliver the auxiliary device 100 and the filter 200 to a predetermined position of the target lumen, and the delivery device is also used to release the filter 200, and after releasing the When the filter 200 is used, the delivery device also controls the radial expansion of the auxiliary device 100 and positions the filter 200 at a corresponding predetermined position with a predetermined posture.
  • distal end and proximal end are defined according to the position of the filter 200 relative to the heart after implantation in the patient's body, and the “distal end” refers to the end of the filter 200 that is farther away from the heart," The “proximal end” refers to the end of the filter 200 that is closer to the heart.
  • distal refers to the relative orientation, relative position, direction of elements or actions relative to each other from the perspective of the operator using the delivery device 10
  • distal generally refers to the first entry into the patient's body and "proximal end” generally refers to the end of the conveyor 10 that is closest to the operator during normal operation.
  • FIG. 10 shows a schematic diagram of delivering the auxiliary device 100 and the filter 200 via the jugular vein to the inferior vena cava. As shown in FIG. 10 , the auxiliary device 100 is disposed at the proximal end of the filter 200 .
  • the delivery device used in this scene includes a tube assembly 310, a rear release assembly and a handle 330, the tube assembly 310 at least includes an inner tube 311, and the rear release assembly
  • the distal end structure is partly connected to the distal end of the inner tube 311, and arranged coaxially with the inner tube 311; the handle 330 is connected to the proximal end of the tube assembly 310 and the rear release assembly the near-end connection.
  • the auxiliary device 100 is sleeved on the inner tube 311 and can at least partially move along the axial direction of the inner tube 311 to make the auxiliary device 100 radially expand or contract.
  • the proximal end of the filter 200 is detachably connected to the distal structure of the rear release assembly, and the filter 200 is coaxially arranged with the distal structure of the rear release assembly.
  • the tube assembly 310 further includes an outer tube 312 , the outer tube 312 is sleeved on the outside of the inner tube 311 and can move along the axial direction of the inner tube 311 .
  • the rear release assembly includes a limiting sleeve 321, a binding member (not shown in the figure) and a connecting wire (not shown in the figure), the limiting sleeve 321 and the binding member constitute the distal structure, wherein
  • the limiting sleeve 321 is fixedly connected to the distal end of the inner tube 311 and communicates with the inner tube 311;
  • the binding member is movably arranged in the limiting sleeve 321, and the connecting wire is movable is threaded through the inner tube 311, and the distal end of the connecting wire is connected to the binding member, and the proximal end of the connecting wire is the proximal end of the rear release assembly.
  • the handle 330 is connected to the proximal end of the tube assembly 310 and the connecting wire, and is used to drive the inner tube 311 and the outer tube 312 to move along the axial direction of the tube assembly 310.
  • the distal end of the auxiliary device 100 is fixedly connected to the inner tube 311, the proximal end of the auxiliary device 100 is sleeved on the inner tube 311, and can move along the axial direction of the inner tube 311, and the The proximal end of the auxiliary device 100 is also fixedly connected to the distal end of the outer tube 312, so that when the outer tube 312 moves on the inner tube 311 in the direction from the proximal end to the distal end (i.e.
  • the auxiliary device 100 can expand radially, and when the outer tube 312 moves on the inner tube 311 along the direction from the distal end to the proximal end (that is, it is withdrawn in the direction outside the body) When the outer tube 312 is removed, the auxiliary device 100 can be radially contracted.
  • any one of the two axial ends of the auxiliary device 100 can be used as the proximal end of the auxiliary device 100, and the other end As the distal end of the auxiliary device 100.
  • the axial length of the first transition section 110 of the auxiliary device 100 is smaller than the axial length of the second transition section 130, the end of the first transition section 110 away from the main body section 120 is used as the auxiliary device.
  • the end of the second transition section 130 away from the main body section 120 serves as the proximal end of the auxiliary device 100 . That is, the first connecting ring 140 is fixedly set on the inner tube 311 , and the second connecting ring 150 is movably set on the inner tube 311 .
  • the handle 330 may be provided with a first driving part and a second driving part.
  • the first driving part is used to control the axial movement of the outer tube 312 relative to the inner tube 311 , and may include a driving button 341 , a first sliding block 342 and a sliding groove 343 .
  • the first slider 342 is movably disposed inside the handle 330 and connected to the proximal end of the outer tube 312 .
  • a part of the driving button 341 is located inside the sliding groove 343 and is connected with the first slider 342, and the other part of the driving button 341 is exposed outside the sliding groove 343 for receiving and acting on the external force.
  • the handle 330 moves axially under action to drive the outer tube 312 to move axially relative to the inner tube 311 .
  • the second driving part is used to control the axial movement of the inner tube 311 relative to the connecting wire, and its structure is similar to that of the first driving part, which will not be repeated here.
  • the limiting sleeve 321 is located outside the distal end of the auxiliary device 100, and the proximal end of the filter 200 may be provided with a recovery component such as a recovery hook, and the recovery hook is used to extend into the limiting sleeve 321 , the limiting sleeve 321 cooperates with the binding member, so that the recovery hook is detachably connected with the rear release assembly.
  • the binding member includes a second sliding block, a groove is formed on the second sliding block, and the groove and the inner wall of the limiting sleeve jointly form a position limiting space, and the recovery hook is used to be accommodated in the limited space.
  • the delivery device further includes a sheath tube 350 , and the sheath tube 350 is used to be movably sleeved on the outside of the tube assembly 310 , the auxiliary device 100 and the filter 200 . It can be understood that when the sheath tube is set on the outside of the auxiliary device 100 and the filter 200, the auxiliary device 100 and the filter 200 are both in a compressed state.
  • the filter 200 and the delivery device After assembling the auxiliary device 100, the filter 200 and the delivery device, use the delivery device to deliver the auxiliary device 100 and the filter 200 to a predetermined position in the inferior vena cava, and then withdraw the The sheath 350 is used to expose the filter 200, and it is understood that the pre-release (ie, the filter portion of the filter 200 is expanded) is completed after the filter 200 is exposed. Then continue to withdraw the sheath tube 350 to expose the auxiliary device 100, then push the outer tube 312 forward to expand the auxiliary device 100, and adjust the diameter according to the predetermined position of the inferior vena cava.
  • the outer tube 312 is used to adjust the degree of expansion of the auxiliary device 100 so that the main body section 120 of the auxiliary device 100 supports the blood vessel wall at the predetermined position. At this time, the auxiliary device 100 is at the same position is arranged coaxially with the blood vessel, so that the filter 200 is also arranged substantially coaxially with the blood vessel. Then the inner tube 311 is retracted to release the connection of the rear release assembly and the recovery hook of the filter 200 , and the rear release of the filter 200 is completed.
  • the process of withdrawing the delivery device (that is, the delivery device and the auxiliary device 100 ) out of the body is as follows: the wire pushes the inner tube 311 forward, and recovers the binding member into the limiting sleeve 321 , then retract the outer tube 312 and put the auxiliary device 100 in a compressed state, then push the sheath tube 350 forward and recover the auxiliary device 100 and the limiting sleeve 321 to the sheath tube 350 Inside, and finally withdraw the entire conveyor out of the body.
  • FIG. 11 shows a schematic diagram of delivering the auxiliary device 100 and the filter 200 along the femoral vein to a predetermined position in the inferior vena cava.
  • the auxiliary device 100 is located on the side of the distal end of the filter 200, the conveyor used in this scenario is the same as that used in the scenario shown in Figure 10, but the distal end of the filter 200 can be separated ground connection to the rear release assembly.
  • the filter 200 is substantially conical in shape and includes a plurality of filter rods 210, and the distal end of each filter rod 210 is gathered and connected to the recovery part; at least part of the filter rods 210 The distal end is formed with a positioning component such as a hook (not shown in the figure), and when the filter 200 is connected to the conveyor, at least part of the positioning component of the filter rod 210 is accommodated in the limiting space ( Take the restricting space formed by the binding member and the limiting sleeve 321, and use the limiting space to accommodate the partial structure of the filter 200 as an example), so as to realize the connection between the filter 200 and the rear release assembly Detachable connection.
  • a positioning component such as a hook

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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)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un dispositif auxiliaire (100) et un transporteur (10). Le transporteur (10) comprend le dispositif auxiliaire (100). Le dispositif auxiliaire (100) comprend une première section de transition (110), une section de corps principal (120), et une seconde section de transition (130) qui sont reliées séquentiellement dans la direction axiale, et le diamètre externe de la première section de transition (110) et le diamètre externe de la seconde section de transition (130) diminuent progressivement dans une direction s'éloignant de la section de corps principal (120). Lorsque le transporteur (10) est utilisé pour introduire un implant dans une cavité cible pour sa libération, la coaxialité de l'implant et de la cavité cible peut être améliorée au moyen du dispositif auxiliaire (100), améliorant ainsi l'effet de capture de thrombus, améliorant l'effet curatif, et facilitant le recyclage.
PCT/CN2022/094401 2021-06-04 2022-05-23 Dispositif auxiliaire et transporteur WO2022253020A1 (fr)

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CN202110625881.6 2021-06-04

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113180881A (zh) * 2021-06-04 2021-07-30 上海蓝脉医疗科技有限公司 一种医疗装置
CN113244018A (zh) * 2021-06-04 2021-08-13 上海蓝脉医疗科技有限公司 一种辅助装置及输送器

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US20020169472A1 (en) * 2001-04-03 2002-11-14 Nareak Douk Guidewire apparatus for temporary distal embolic protection
CN112741708A (zh) * 2020-12-29 2021-05-04 江苏金泰医疗器械有限公司 一种血管内滤器置中植入装置
CN113180881A (zh) * 2021-06-04 2021-07-30 上海蓝脉医疗科技有限公司 一种医疗装置
CN113244018A (zh) * 2021-06-04 2021-08-13 上海蓝脉医疗科技有限公司 一种辅助装置及输送器
CN214967150U (zh) * 2020-12-31 2021-12-03 宁波健世科技股份有限公司 一种带对中调整装置的植入器械输送系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020169472A1 (en) * 2001-04-03 2002-11-14 Nareak Douk Guidewire apparatus for temporary distal embolic protection
CN112741708A (zh) * 2020-12-29 2021-05-04 江苏金泰医疗器械有限公司 一种血管内滤器置中植入装置
CN214967150U (zh) * 2020-12-31 2021-12-03 宁波健世科技股份有限公司 一种带对中调整装置的植入器械输送系统
CN113180881A (zh) * 2021-06-04 2021-07-30 上海蓝脉医疗科技有限公司 一种医疗装置
CN113244018A (zh) * 2021-06-04 2021-08-13 上海蓝脉医疗科技有限公司 一种辅助装置及输送器
CN114521993A (zh) * 2021-06-04 2022-05-24 上海蓝脉医疗科技有限公司 一种辅助装置及输送器

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AR126081A1 (es) 2023-09-06
CN113244018A (zh) 2021-08-13
CN114521993A (zh) 2022-05-24

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