CA2441955A1 - Variable stiffness heating catheter - Google Patents

Variable stiffness heating catheter Download PDF

Info

Publication number
CA2441955A1
CA2441955A1 CA002441955A CA2441955A CA2441955A1 CA 2441955 A1 CA2441955 A1 CA 2441955A1 CA 002441955 A CA002441955 A CA 002441955A CA 2441955 A CA2441955 A CA 2441955A CA 2441955 A1 CA2441955 A1 CA 2441955A1
Authority
CA
Canada
Prior art keywords
reinforcing tube
heating catheter
apertures
variable stiffness
stiffness heating
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
CA002441955A
Other languages
French (fr)
Other versions
CA2441955C (en
Inventor
Michael J. O'connor
David A. Ferrera
Matthew Connors
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Micrus Endovascular LLC
Original Assignee
Micrus Corporation
Michael J. O'connor
David A. Ferrera
Matthew Connors
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 Micrus Corporation, Michael J. O'connor, David A. Ferrera, Matthew Connors filed Critical Micrus Corporation
Publication of CA2441955A1 publication Critical patent/CA2441955A1/en
Application granted granted Critical
Publication of CA2441955C publication Critical patent/CA2441955C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0043Catheters; Hollow probes characterised by structural features
    • A61M25/005Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
    • A61M25/0053Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B18/24Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0043Catheters; Hollow probes characterised by structural features
    • A61M2025/0063Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
    • A61M2025/0064Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body which become stiffer or softer when heated
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0043Catheters; Hollow probes characterised by structural features
    • A61M25/005Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
    • A61M25/0051Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids made from fenestrated or weakened tubing layer

Abstract

The variable stiffness heating catheter includes a heating catheter shaft including at least one electrically conductive member, a reinforcing tube with apertures formed around the surface of the reinforcing tube, and at least one coaxial outer layer of a polymer, metal, or both for providing desired variations in stiffness along at least a portion of the length of the shaft.
The apertures can be formed as axial or helical slits in the surface of the reinforcing tube, and the reinforcing tube can also be formed to be tapered at the point where the apertures are formed in the reinforcing tube to provide a heating catheter that is torqueable and pushable at the proximal end, yet soft and flexible at the distal end.
CA002441955A 2001-03-19 2002-03-19 Variable stiffness heating catheter Expired - Fee Related CA2441955C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/813,119 2001-03-19
US09/813,119 US6887235B2 (en) 1999-03-24 2001-03-19 Variable stiffness heating catheter
PCT/US2002/008369 WO2002078777A1 (en) 2001-03-19 2002-03-19 Variable stiffness heating catheter

Publications (2)

Publication Number Publication Date
CA2441955A1 true CA2441955A1 (en) 2002-10-10
CA2441955C CA2441955C (en) 2007-06-12

Family

ID=25211498

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002441955A Expired - Fee Related CA2441955C (en) 2001-03-19 2002-03-19 Variable stiffness heating catheter

Country Status (8)

Country Link
US (4) US6887235B2 (en)
EP (1) EP1379310B1 (en)
AT (1) ATE448822T1 (en)
AU (1) AU2002338278B2 (en)
CA (1) CA2441955C (en)
DE (1) DE60234427D1 (en)
ES (1) ES2335273T3 (en)
WO (1) WO2002078777A1 (en)

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US7066931B2 (en) 2006-06-27
US20100114270A1 (en) 2010-05-06
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US6887235B2 (en) 2005-05-03
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US20060265036A1 (en) 2006-11-23
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EP1379310B1 (en) 2009-11-18
ATE448822T1 (en) 2009-12-15

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