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NZ792016B2 - Blood pump placement and intravascular blood pump - Google Patents

Blood pump placement and intravascular blood pump

Info

Publication number
NZ792016B2
NZ792016B2 NZ792016A NZ79201621A NZ792016B2 NZ 792016 B2 NZ792016 B2 NZ 792016B2 NZ 792016 A NZ792016 A NZ 792016A NZ 79201621 A NZ79201621 A NZ 79201621A NZ 792016 B2 NZ792016 B2 NZ 792016B2
Authority
NZ
New Zealand
Prior art keywords
blood pump
intravascular blood
pump according
cannula
electric lines
Prior art date
Application number
NZ792016A
Other versions
NZ792016A (en
Inventor
Wolfgang Kerkhoffs
Ellen Keysselitz
Brimmers Cristine Rodrigues
Thorsten Siess
Original Assignee
Abiomed Europe Gmbh
Filing date
Publication date
Priority claimed from EP20155973.9A external-priority patent/EP3862035A1/en
Application filed by Abiomed Europe Gmbh filed Critical Abiomed Europe Gmbh
Publication of NZ792016A publication Critical patent/NZ792016A/en
Publication of NZ792016B2 publication Critical patent/NZ792016B2/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • A61B2017/00358—Snares for grasping
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0266—Shape memory materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
    • A61M60/13—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/205—Non-positive displacement blood pumps
    • A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
    • A61M60/221—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having both radial and axial components, e.g. mixed flow pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/205—Non-positive displacement blood pumps
    • A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
    • A61M60/226—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
    • A61M60/232—Centrifugal pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/205—Non-positive displacement blood pumps
    • A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
    • A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/403—Details relating to driving for non-positive displacement blood pumps
    • A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
    • A61M60/81—Pump housings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/857—Implantable blood tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/861—Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/865—Devices for guiding or inserting pumps or pumping devices into the patient's body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/871—Energy supply devices; Converters therefor
    • A61M60/878—Electrical connections within the patient's body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
    • A61M60/871—Energy supply devices; Converters therefor
    • A61M60/88—Percutaneous cables

Abstract

intravascular blood pump for percutaneous insertion into a patient's vasculature comprises a pumping device (30) and a supply catheter (36). The pumping device comprises a pump section with a blood flow inlet, blood flow outlet, and impeller for conveying blood from the inlet to the outlet and further comprises a drive section connected to the pump section and adapted to drive the impeller. The supply line supplies the drive section with electric energy for driving the impeller. The supply catheter (36) supplies electric energy for driving the impeller. The pump section (32) is axially arranged between the drive section (31) and the supply line (36). The pump section includes a flexibly bendable cannula (35), and electric lines (44) are arranged across the cannula (35) in a manner to prevent their rupture in the event that the cannula (35) is subject to bending. The intravascular blood pump is configured as a forcing pump with a proximal inlet and a distal outlet.

Claims (52)

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. An intravascular blood pump for percutaneous insertion into a patient’s vasculature, the intravascular blood pump comprising a pumping device and a supply line, - wherein the pumping device comprises a pump section having a blood flow inlet, a blood flow outlet and an impeller rotatable about an axis of rotation for conveying blood from the blood flow inlet to the blood flow outlet, and a drive section connected to the pump section and adapted to drive the impeller, - wherein the supply line is adapted to supply the drive section at least with electric energy for driving the impeller, - wherein the pump section is arranged along the axis of rotation between the drive section and the supply line, and - wherein the intravascular blood pump is configured as a forcing pump with the blood flow inlet arranged at a proximal end of the pump section and the blood flow outlet arranged at a distal end of the pump section.
2. The intravascular blood pump according to claim 1, comprising an electrically conductive connection which extends along the pump section and electrically connects the supply line with a motor of the drive section.
3. The intravascular blood pump according to claim 1 or 2, wherein the pump section comprises a cannula having a longitudinal axis and being bendable along the longitudinal axis.
4. The intravascular blood pump according to claim 3, wherein the blood flow outlet of the pump section is arranged at a distal end of the cannula.
5. The intravascular blood pump according to claim 3 or 4, wherein the electrically conductive connection comprises one or more electric lines which extend along a wall of the cannula and electrically connect the supply line with the motor of the drive section.
6. The intravascular blood pump according to claim 5, wherein the motor of the drive section includes a plurality of motor cables and wherein an electrical connector is provided at or in a distance distally to a distal end of the cannula, preferably proximal of the blood flow outlet, where each of the plurality of motor cables is respectively connected to one of the one or more electric lines, the electrical connector preferably being a printed circuit board, and the electrical connector preferably being covered with an insulating material, more preferably with a polymer coating, such as polyurethane.
7. The intravascular blood pump according to claim 6, wherein each one of the one or more electric lines is a stranded wire.
8. The intravascular blood pump according to claim 6, wherein each one of the one or more electric lines is a single wire.
9. The intravascular blood pump according to claim 5, wherein the motor of the drive section includes a plurality of motor cables which constitute the one or more electric lines extending along the cannula, and wherein an electrical connector is provided at or proximally of a proximal end of the cannula, preferably proximal of the blood flow inlet, where each of the plurality of motor cables is respectively connected to the supply line, the electrical connector preferably being a printed circuit board, and the electrical connector preferably being covered with an insulating material, more preferably with a polymer coating, such as polyurethane.
10. The intravascular blood pump according to any one of claims 5 to 9, wherein the one or more electric lines extend along the wall of the cannula in a longitudinal direction parallel to the longitudinal axis of the cannula, preferably along a neutral bending plane of the cannula which is predetermined by a central plane of curvature of the cannula, and are stretchable in the longitudinal direction.
11. The intravascular blood pump according to any one of claims 5 to 9, wherein the one or more electric lines extend along the wall of the cannula inside at least one bendable tube, which is preferably disposed along a neutral bending plane of the cannula which is predetermined by a central plane of curvature of the cannula.
12. The intravascular blood pump according to claim 11, wherein the one or more electric lines are laid with slack inside the at least one bendable tube.
13. The intravascular blood pump according to claim 11 or 12, wherein one bendable tube is provided for each one of the one or more electric lines.
14. The intravascular blood pump according to any one of claims 11 to 13, wherein a plurality of the at least one bendable tube is arranged on opposite sides of the wall of the cannula so as to create a neutral bending plane within the cannula.
15. The intravascular blood pump according to claim 14, wherein the cannula has an even number of blood flow inlet ports, more preferably four blood flow inlet ports.
16. The intravascular blood pump according to any one of claims 11 to 15, wherein the at least one bendable tube is made of a shape memory alloy.
17. The intravascular blood pump according to claim 16, wherein the shape memory alloy is nitinol.
18. The intravascular blood pump according to any one of claims 5 to 9, wherein the one or more electric lines extend meander-like along the wall of the cannula.
19. The intravascular blood pump according to claim 18, wherein the one or more meander-like extending electric lines are arranged along a neutral bending plane of the cannula which is predetermined by a central plane of curvature of the cannula.
20. The intravascular blood pump according to any one of claims 5 to 9, wherein the one or more electric lines extend helically along the wall of the cannula.
21. The intravascular blood pump according to claim 20, wherein the cannula includes one or more reinforcing windings which extend helically along the wall of the cannula and wherein an angular orientation of the one or more helically extending electric lines relative to the longitudinal axis of the cannula is different to an angular orientation of the one or more helically extending reinforcing windings so that the one or more reinforcing windings and the one or more electric lines overlap, wherein preferably the angular orientations differ by at least 5°, preferably at least 10°.
22. The intravascular blood pump according to claim 20 or 21, wherein the cannula includes one or more reinforcing windings which extend helically along the wall of the cannula and wherein an angular orientation of the one or more helically extending electric lines relative to the longitudinal axis of the cannula is opposite to an angular orientation of the one or more helically extending reinforcing windings so that the one or more reinforcing windings and one or more electric lines overlap.
23. The intravascular blood pump according to claim 20, wherein the cannula includes one or more reinforcing windings which extend helically along the wall of the cannula and wherein the one or more helically extending electric lines are placed between the one or more helically extending reinforcing windings.
24. The intravascular blood pump according to claim 23, wherein the one or more helically extending reinforcing windings include a plurality reinforcing windings arranged in parallel in an axial direction relative to the longitudinal axis of the cannula so as to be nested helically within each other, and wherein the one or more helically extending electric lines include a plurality of electric lines arranged such that exactly one of the plurality of electric lines is placed between two or more of the helically extending reinforcing windings.
25. The intravascular blood pump according to claim 24, wherein between two and nine of the reinforcing windings are present.
26. The intravascular blood pump according to any one of claims 23 to 25, wherein one or two or three of the one or more helically extending reinforcing windings are arranged between each of the one or more helically extending electric lines.
27. The intravascular blood pump according to any one of claims 23 to 26, wherein an electrically insulating layer is arranged between the helically extending reinforcing windings and the helically extending electric lines such that the reinforcing windings are arranged above the insulating layer and the electric lines are arranged below the insulating layer, or vice versa.
28. The intravascular blood pump according to claim 20, wherein the cannula includes one or more reinforcing windings, which extend helically along the wall of the cannula and wherein at least one of the electric lines is formed by a respective one of the reinforcing windings.
29. The intravascular blood pump according to claim 28, wherein an electrically insulating layer is arranged between the helically extending reinforcing windings such that neighboring reinforcing windings are arranged in alternating fashion above and below the insulating layer.
30. The intravascular blood pump according to any one of claims 20 to 29, wherein the one or more helically extending reinforcing windings are made of a flat wire.
31. The intravascular blood pump according to any one of claims 20 to 30, wherein the reinforcing windings are made of a shape memory alloy.
32. The intravascular blood pump according to any one of claims 5 to 31, wherein the one or more electric lines are arranged inside the wall of the cannula.
33. The intravascular blood pump according to any one of claims 5 to 32, wherein the wall of the cannula comprises a first foil and a second foil bonded to and covering the first foil, wherein at least one reinforcing member is arranged between the first and the second foils, preferably together with the one or more electric lines.
34. The intravascular blood pump according to claim 33, wherein the first and second foils are made of polyurethane.
35. The intravascular blood pump according to any one of claims 3 to 34, wherein the cannula is configured not to buckle when bent along its longitudinal axis by up to 180°.
36. The intravascular blood pump according to any one of claims 1 to 35, wherein the impeller is a axially-radially, diagonally or centrifugally delivering impeller.
37. The intravascular blood pump according to any one of claims 1 to 36, wherein the supply line is in the form of a supply catheter which preferably further includes at least a pressure sensor line.
38. The intravascular blood pump according to any of claims 1 to 37, comprising at least one anchor adapted to anchor the intravascular blood pump in a wall of a patient’s blood vessel.
39. The intravascular blood pump according to claim 38, wherein the anchor comprises spikes that are expandable and collapsible.
40. The intravascular blood pump according to any of claims 1 to 39, comprising an anchoring structure at a distal end region of the intravascular blood pump.
41. The intravascular blood pump according to claim 40, wherein the anchoring structure comprises a hook or loop at an axial end of the distal end region.
42. The intravascular blood pump according to claim 41, wherein the loop is made from a soft, elastic material and forms an atraumatic distal extension at the axial end of the intravascular blood pump.
43. The intravascular blood pump according to claim 41, wherein the loop is provided at an atraumatic distal extension of the intravascular blood pump.
44. The intravascular blood pump according to claim 40, wherein the anchoring structure comprises a neck-and-head structure at an axial end of the distal end region.
45. The intravascular blood pump according to claim 44, wherein a connecting surface between a head and a neck of the neck-and-head structure is inclined by 90° relative to a longitudinal axis of the intravascular blood pump, or the connecting surface is inclined by more than 90° relative to the longitudinal axis of the intravascular blood pump so as to form an undercut.
46. The intravascular blood pump according to claim 44 or 45, wherein the neck-and-head structure is formed in a recess of the distal end region.
47. The intravascular blood pump according to claim 44 or 45, wherein the neck-and-head structure is formed at an end of an atraumatic distal extension.
48. An introducer set, comprising an intravascular blood pump according to any one of claims 40 to 47 and a connecting catheter which comprises a connector adapted to connect to the anchoring structure of the intravascular blood pump.
49. The introducer set according to claim 48, wherein the connector comprises a hook adapted to hook into the anchoring structure of the intravascular blood pump.
50. The introducer set according to claim 48, wherein the connector comprises a gripper having a first grip and a second grip adapted to close or grip around the hook or loop of the intravascular blood pump.
51. The introducer set according to claim 50, wherein the gripper has a gripping surface, wherein the gripping surface is inclined by 90° relative to a longitudinal axis of the connecting catheter.
52. The introducer set according to claim 50, wherein the gripper has a gripping surface, wherein the gripping surface is inclined by more than 90° relative to a longitudinal axis of the connecting catheter so as to form an undercut.
NZ792016A 2021-02-02 Blood pump placement and intravascular blood pump NZ792016B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20155973.9A EP3862035A1 (en) 2020-02-06 2020-02-06 Blood pump placement and intravascular blood pump
PCT/EP2021/052434 WO2021156255A1 (en) 2020-02-06 2021-02-02 Blood pump placement and intravascular blood pump

Publications (2)

Publication Number Publication Date
NZ792016A NZ792016A (en) 2025-05-30
NZ792016B2 true NZ792016B2 (en) 2025-09-02

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