CA2648819A1 - Rotational atherectomy device with solid support elements supported by fluid bearings - Google Patents

Rotational atherectomy device with solid support elements supported by fluid bearings Download PDF

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Publication number
CA2648819A1
CA2648819A1 CA002648819A CA2648819A CA2648819A1 CA 2648819 A1 CA2648819 A1 CA 2648819A1 CA 002648819 A CA002648819 A CA 002648819A CA 2648819 A CA2648819 A CA 2648819A CA 2648819 A1 CA2648819 A1 CA 2648819A1
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CA
Canada
Prior art keywords
drive shaft
support element
fluid
solid
longitudinal axis
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002648819A
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French (fr)
Other versions
CA2648819C (en
Inventor
Leonid Shturman
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Individual
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Individual
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36955631&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2648819(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2648819A1 publication Critical patent/CA2648819A1/en
Application granted granted Critical
Publication of CA2648819C publication Critical patent/CA2648819C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
    • A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3203—Fluid jet cutting instruments
    • A61B17/32037—Fluid jet cutting instruments for removing obstructions from inner organs or blood vessels, e.g. for atherectomy

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

A rotational atherectomy device for removing a stenotic tissue (330, 360) from a vessel (300) of a patient comprises a flexible hollow drive shaft (2) and an abrasive element (101, 102) mounted to the drive shaft proximal to and spaced from a solid support element (10, 10s) mounted at the distal end (6) of the drive shaft, the solid support element having a rounded outer surface and an outflow channel (20, 20s) with an outflow opening in said rounded outer surface. The drive shaft comprises a torque transmitting coil (4) and at least one fluid impermeable membrane (3) forming a fluid impermeable lumen for the antegrade flow (FF) of fluid into the outflow channel such that, during rotation of the drive shaft, a flow of fluid out of said outflow opening forms a fluid bearing between the rotating solid support element and the wall of the treated vessel.

Claims (11)

1. A rotational atherectomy device for removing a stenotic tissue from a vessel of a patient, the device comprising a rotatable, flexible, hollow drive shaft having a distal end, an abrasive element mounted to the drive shaft proximal to and spaced away from a distal solid support element mounted at the distal end of the drive shaft, the distal solid support element having a rounded outer surface and comprising an outflow channel extending through the solid distal support element, the outflow channel having an outflow opening in said rounded outer surface, the drive shaft comprising a torque transmitting coil and at least one fluid impermeable membrane forming a fluid impermeable lumen for the antegrade flow of fluid through the drive shaft into the outflow channel of the solid distal support element such that, during rotation of the drive shaft, said outflow opening of the outflow channel is facing an inner surface of a vessel being treated so that a flow of fluid out of said outflow opening forms a fluid layer between the solid distal support element and a wall of the treated vessel, said layer of fluid forming a fluid bearing between the rotating solid distal support element and the wall of the treated vessel.
2. A rotational atherectomy device according to claim 1, wherein the fluid impermeable drive shaft is provided with a solid proximal support element located proximal to and spaced away from the abrasive element, the membrane that forms a fluid impermeable lumen for the antegrade flow of fluid through the drive shaft into the outflow channel of the distal solid support element also forming a lumen for the antegrade flow of fluid through the drive shaft into an outflow channel extending through said solid proximal support element, the solid proximal support element having a rounded outer surface, said outflow channel having an outflow opening in the rounded outer surface of the solid proximal support element such that, during rotation of the drive shaft, said outflow opening on the outer surface of the solid proximal support element is facing an inner surface of a treated vessel so that a flow of fluid out of said outflow opening forms a layer of fluid between the solid proximal support element and a wall of the treated vessel, said layer of fluid forming a fluid bearing between the rotating solid proximal support element and the wall of the treated vessel.
3. A rotational atherectomy device according to claim 1, wherein the drive shaft has a longitudinal axis and the solid distal support element has a centre of mass which is coaxial with the longitudinal axis of the drive shaft, said distal support element having a plurality of outflow channels that extend through the distal support element in a radially outward direction with respect to the longitudinal axis of the drive shaft and have their outflow openings spaced around the circumference of the solid distal support element such that, during rotation of the drive shaft, a flow of fluid out of the outflow openings forms a layer of fluid between the solid distal support element and a wall of the vessel being treated, said layer of fluid forming a fluid bearing between the rotating solid distal support element and the wall of the vessel being treated.
4. A rotational atherectomy device according to claim 2, wherein the drive shaft has a longitudinal axis and the solid proximal support element has a centre of mass coaxial with the longitudinal axis of the drive shaft, said proximal support element having a plurality of outflow channels extending through the solid proximal support element in a radially outward direction with respect to the longitudinal axis of the drive shaft and having their outflow openings located around the circumference of the solid proximal support element such that, during rotation of the drive shaft a flow of fluid out of the outflow openings forms a layer of fluid between the solid proximal support element and a wall of the vessel being treated, said layer of fluid forming a fluid bearing between the rotating solid proximal support element and the wall of the vessel being treated.
5. A rotational atherectomy device according to claim 1, wherein the drive shaft has a longitudinal axis and the solid distal support element has a centre of mass spaced radially away from the longitudinal axis of the drive shaft in one direction so that it acts as a counterweight to the abrasive element, which has its centre of mass spaced radially away from the longitudinal axis of the drive shaft in a diametrically opposite direction.
6. A rotational atherectomy device according to any of claims 1, 2 or 5, wherein the abrasive element has its centre of mass spaced radially away from a longitudinal axis of the drive shaft, the centres of mass of both distal and proximal solid support elements being spaced radially away from a longitudinal axis of the drive shaft but in a direction diametrically opposite to the direction in which the abrasive element is spaced radially away from the longitudinal axis of the drive shaft so that the distal and proximal solid support elements act as counterweights to the abrasive element.
7. A rotational atherectomy device according to claims 1, 5 and 6, comprising a plurality of outflow channels in the solid distal support element.
8. A rotational atherectomy device according to claim 3 and 4, wherein the centre of mass of the abrasive element is coaxial with the longitudinal axis of the drive shaft.
9. A rotational atherectomy device according to claim 3 and 4, wherein the centre of mass of the abrasive element is spaced radially away from the longitudinal axis of the drive shaft.
10. A rotational atherectomy device according to claim 1, wherein the fluid impermeable membrane lines the torque transmitting coil.
11. A rotational atherectomy device according to claim 1, wherein the fluid impermeable membrane is disposed around the torque transmitting coil.
CA2648819A 2006-07-13 2007-06-28 Rotational atherectomy device with solid support elements supported by fluid bearings Expired - Fee Related CA2648819C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0613979.4A GB0613979D0 (en) 2006-07-13 2006-07-13 Rotational atherectomy device with solid support elements supported by fluid bearings
GB0613979.4 2006-07-13
PCT/EP2007/056499 WO2008006704A1 (en) 2006-07-13 2007-06-28 Atherectomy device supported by fluid bearings

Publications (2)

Publication Number Publication Date
CA2648819A1 true CA2648819A1 (en) 2008-01-17
CA2648819C CA2648819C (en) 2011-10-04

Family

ID=36955631

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2648819A Expired - Fee Related CA2648819C (en) 2006-07-13 2007-06-28 Rotational atherectomy device with solid support elements supported by fluid bearings

Country Status (6)

Country Link
US (3) US8157825B2 (en)
EP (1) EP2040625B1 (en)
AU (1) AU2007271819A1 (en)
CA (1) CA2648819C (en)
GB (2) GB0613979D0 (en)
WO (1) WO2008006704A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0613980D0 (en) 2006-07-13 2006-08-23 Shturman Leonid Rotational Atherectomy Device with Fluid Inflatable Elements supported by Fluid Bearings
GB0613979D0 (en) * 2006-07-13 2006-08-23 Shturman Leonid Rotational atherectomy device with solid support elements supported by fluid bearings
GB0613982D0 (en) 2006-07-13 2006-08-23 Shturman Leonid Rotational atherectomy device with fluid inflatable support elements and two torque transmitting coils
GB0623366D0 (en) 2006-11-23 2007-01-03 Shturman Leonid Rotational atherectomy device with fluid inflatable support elements and distal protection capability
GB0613981D0 (en) * 2006-07-13 2006-08-23 Shturman Leonid
GB0722990D0 (en) 2007-11-23 2008-01-02 Shturman Leonid Rotational atherectomy system with enhanced distal protection capability and method of use
GB0905751D0 (en) 2009-04-03 2009-05-20 Shturman Leonid Rotational atherectomy device with distal embolic protection and method of use
GB0905748D0 (en) 2009-04-03 2009-05-20 Shturman Leonid Rotational atherectomy device with eccentric abrasive element and method of use
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Also Published As

Publication number Publication date
US20090312777A1 (en) 2009-12-17
WO2008006704A1 (en) 2008-01-17
US20130245654A1 (en) 2013-09-19
GB0712601D0 (en) 2007-08-08
US8157825B2 (en) 2012-04-17
US8454638B2 (en) 2013-06-04
EP2040625B1 (en) 2016-08-10
GB0613979D0 (en) 2006-08-23
AU2007271819A1 (en) 2008-01-17
GB2440223A (en) 2008-01-23
CA2648819C (en) 2011-10-04
EP2040625A1 (en) 2009-04-01
US20120191113A1 (en) 2012-07-26

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20220301

MKLA Lapsed

Effective date: 20200831