CA2175100A1 - Delivery catheter for electrolytically detachable implant - Google Patents

Delivery catheter for electrolytically detachable implant

Info

Publication number
CA2175100A1
CA2175100A1 CA002175100A CA2175100A CA2175100A1 CA 2175100 A1 CA2175100 A1 CA 2175100A1 CA 002175100 A CA002175100 A CA 002175100A CA 2175100 A CA2175100 A CA 2175100A CA 2175100 A1 CA2175100 A1 CA 2175100A1
Authority
CA
Canada
Prior art keywords
electrode
link
power supply
cathode
catheter
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
CA002175100A
Other languages
French (fr)
Other versions
CA2175100C (en
Inventor
Timothy Mills
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.)
Target Therapeutics Inc
Original Assignee
Timothy Mills
Target Therapeutics, Inc.
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 Timothy Mills, Target Therapeutics, Inc. filed Critical Timothy Mills
Publication of CA2175100A1 publication Critical patent/CA2175100A1/en
Application granted granted Critical
Publication of CA2175100C publication Critical patent/CA2175100C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • A61M25/00—Catheters; Hollow probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/20—Applying electric currents by contact electrodes continuous direct currents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
    • A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
    • A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/1214—Coils or wires
    • A61B17/12145—Coils or wires having a pre-set deployed three-dimensional shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B2017/1205—Introduction devices
    • A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
    • A61B2017/12063—Details concerning the detachment of the occluding device from the introduction device electrolytically detachable

Abstract

The invention involves a catheter for introducing a delivery member such as a guidewire having an implant coupled thereto via an electrolytically disintegratable link that is coupled to the anode of a power supply having an anode and a cathode. The catheter comprises an elongated tubular member having an outer surface, proximal and distal end portions, a lumen extending between those portions, an electrode and a conductor. The electrode is disposed within the outer surface of the tubular member in the vicinity of the distal end portion and has a surface that faces and communicates with the lumen. The electrode is electrically coupled to the conductor which, in turn, is adapted for coupling to the power supply cathode such that when the electrolytically disintegratable link is placed in an ionic solution, such as can be found in an aneurysm, and positive current is provided from the power supply to the link, current from the link may return to the cathode of the power supply via the electrode. With this construction, the electrode is shielded from endolumenal structures which could otherwise increase the resistance in the current path from the sacrificial link to the electrode. The positioning of the electrode in the catheter as described above allows a reproducible impedance path from the electrode to the detachment zone, thus reducing detachment time variability.
CA002175100A 1995-04-28 1996-04-26 Delivery catheter for electrolytically detachable implant Expired - Fee Related CA2175100C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US43074495A 1995-04-28 1995-04-28
US08/430,744 1995-04-28
US08/546,516 US6059779A (en) 1995-04-28 1995-10-20 Delivery catheter for electrolytically detachable implant
US08/546,516 1995-10-20

Publications (2)

Publication Number Publication Date
CA2175100A1 true CA2175100A1 (en) 1996-10-29
CA2175100C CA2175100C (en) 2001-04-03

Family

ID=27028729

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002175100A Expired - Fee Related CA2175100C (en) 1995-04-28 1996-04-26 Delivery catheter for electrolytically detachable implant

Country Status (9)

Country Link
US (1) US6059779A (en)
EP (1) EP0739607B1 (en)
JP (1) JP2874850B2 (en)
KR (1) KR960037020A (en)
AT (1) ATE223680T1 (en)
AU (1) AU697100B2 (en)
CA (1) CA2175100C (en)
DE (1) DE69623524T2 (en)
ES (1) ES2182948T3 (en)

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Also Published As

Publication number Publication date
CA2175100C (en) 2001-04-03
DE69623524T2 (en) 2003-01-09
EP0739607B1 (en) 2002-09-11
JP2874850B2 (en) 1999-03-24
EP0739607A3 (en) 1997-08-06
ATE223680T1 (en) 2002-09-15
JPH08322941A (en) 1996-12-10
AU5193696A (en) 1997-01-09
AU697100B2 (en) 1998-09-24
EP0739607A2 (en) 1996-10-30
ES2182948T3 (en) 2003-03-16
DE69623524D1 (en) 2002-10-17
KR960037020A (en) 1996-11-19
US6059779A (en) 2000-05-09

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