CA2441396A1 - Apparatus for deployment of micro-coil using a catheter - Google Patents

Apparatus for deployment of micro-coil using a catheter Download PDF

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Publication number
CA2441396A1
CA2441396A1 CA002441396A CA2441396A CA2441396A1 CA 2441396 A1 CA2441396 A1 CA 2441396A1 CA 002441396 A CA002441396 A CA 002441396A CA 2441396 A CA2441396 A CA 2441396A CA 2441396 A1 CA2441396 A1 CA 2441396A1
Authority
CA
Canada
Prior art keywords
therapeutic device
pusher member
flexible
connector fiber
elongated
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
CA002441396A
Other languages
French (fr)
Other versions
CA2441396C (en
Inventor
Deepak Gandhi
Kamal Ramzipoor
David A. Ferrera
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
Individual
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 Individual filed Critical Individual
Publication of CA2441396A1 publication Critical patent/CA2441396A1/en
Application granted granted Critical
Publication of CA2441396C publication Critical patent/CA2441396C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—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
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/1214—Coils or 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
    • A61B2017/1205—Introduction devices
    • 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
    • A61B2017/12068—Details concerning the detachment of the occluding device from the introduction device detachable by heat
    • 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
    • A61B2017/12068—Details concerning the detachment of the occluding device from the introduction device detachable by heat
    • A61B2017/12077—Joint changing shape upon application of heat, e.g. bi-metal or reversible thermal memory

Landscapes

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

Abstract

The apparatus for deployment of a therapeutic device such as a micro-coil provides for a pusher member and a connector fiber for securing the therapeutic device to the pusher member. The connector fiber passes adjacent to a distal heating end of an elongated, flexible heat pipe member within the distal portion of the pusher member, for heating and breaking the connector fiber to release the therapeutic device when a desired placement of the therapeutic device within the vasculature is achieved.

Claims (17)

WHAT IS CLAIMED IS:
1. An apparatus for release and deployment of a therapeutic device within the vasculature of a patient, comprising:
an elongated, flexible pusher member having an interior lumen and a distal portion;
a connector fiber detachably mounting the therapeutic device to the pusher member for placement of the therapeutic device within the vasculature, the connector fiber being capable of being broken by heat;
an elongated, flexible heat pipe member disposed within the interior lumen of the elongated, flexible pusher member, said elongated, flexible heat pipe member having a distal heating end disposed adjacent to the connector fiber for heating the connector fiber to cause the connector fiber to break and release the therapeutic device for detaching and deploying the therapeutic device from the flexible pusher member when a desired placement of the therapeutic device within the vasculature is achieved.
2. The intravascular delivery system of Claim 1, wherein said elongated, flexible heat pipe member comprises a flexible heat pipe having a hollow interior chamber containing a working fluid, said flexible heat pipe having a metal evaporator end portion for conducting heat to the working fluid in the interior chamber of the heat pipe, a flexible insulated mid-portion, and a metal condenser end portion for conducting heat from the working fluid to the shape memory device.
3. The intravascular delivery system of Claim 2, wherein said insulated mid-portion comprises an outer covering of resinous material so that the mid-portion does not radiate heat.
4. The intravascular delivery system of Claim 2, wherein said flexible heat pipe comprises a metal hollow tube.
5. The intravascular delivery system of Claim 4, wherein said metal hollow tube is formed from a beryllium copper alloy.
b. The intravascular delivery system of Claim 2, wherein said evaporator end portion comprises a stainless steel portion for conducting heat to said metal hollow tube and the working fluid in the interior chamber of the heat pipe.
7. The intravascular delivery system of Claim 2, wherein said condenser end portion is partially covered with polytetrafluoroethylene, leaving a distal end portion of the condenser end portion exposed to transfer heat to the shape memory collar.
8. The apparatus of Claim 1, wherein said connector fiber is formed from a thermoplastic material.
9. The apparatus of Claim 1, wherein said connector fiber is formed from polyethylene.
10. The apparatus of Claim 1, wherein said pusher member includes at least one entry port communicating with said interior lumen of said pusher member, and said heater is disposed in the interior lumen of the pusher member adjacent to said at least one entry port.
11. The apparatus of Claim 10, wherein said connector fiber extends from a proximal portion of the pusher member to form a loop through the connector ring, and back through said at least one port through the pusher member to the proximal portion of the pusher member.
12. The apparatus of Claim 1, wherein said therapeutic device to be placed within the vasculature of a patient is connected to an annular connector ring, and the connector fiber mounting the therapeutic device to the pusher member passes through the connector ring to secure the therapeutic device to the pusher member.
13. The apparatus of Claim 1, wherein said therapeutic device comprises a vasoocclusive device.
14. The apparatus of Claim 1, wherein said therapeutic device comprises a microcoil.
15. A method for release and deployment of a therapeutic device within the vasculature of a patient, the steps of the method comprising:
providing a therapeutic device to be placed within the vasculature of a patient;
providing an elongated, flexible pusher member having an interior lumen and a distal portion;
providing a connector fiber detachably mounting the therapeutic device to the pusher member for placement of the therapeutic device within the vasculature, the connector fiber being capable of being broken by heating;
providing an elongated, flexible heat pipe member within the interior lumen of the elongated, flexible pusher member, said elongated, flexible heat pipe member having a distal heating end disposed adjacent to the connector fiber for heating the connector fiber;
positioning the therapeutic device at a desired placement within a patient's vasculature; and supplying heat to the elongated, flexible heat pipe member to heat a portion of said connector fiber to cause the connector fiber to break and release the therapeutic device for detaching and deploying the therapeutic device from the flexible pusher member when a desired placement of the therapeutic device within the vasculature is achieved.
16. The method of Claim 15, wherein said therapeutic device comprises a vasoocclusive device.
17. The method of Claim 15, wherein said therapeutic device comprises a microcoil.
CA2441396A 2002-07-19 2002-07-19 Apparatus for deployment of micro-coil using a catheter Expired - Fee Related CA2441396C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/023007 WO2004010877A1 (en) 2002-07-19 2002-07-19 Apparatus for deployment of micro-coil using a catheter

Publications (2)

Publication Number Publication Date
CA2441396A1 true CA2441396A1 (en) 2004-01-19
CA2441396C CA2441396C (en) 2010-07-13

Family

ID=31185973

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2441396A Expired - Fee Related CA2441396C (en) 2002-07-19 2002-07-19 Apparatus for deployment of micro-coil using a catheter

Country Status (3)

Country Link
AU (1) AU2002320643A1 (en)
CA (1) CA2441396C (en)
WO (1) WO2004010877A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7740637B2 (en) * 2000-02-09 2010-06-22 Micrus Endovascular Corporation Apparatus and method for deployment of a therapeutic device using a catheter
EP2139532A2 (en) * 2007-03-13 2010-01-06 Smith & Nephew, Inc. Systems and methods for installing and removing an expandable polymer
EP3128961B1 (en) 2014-04-11 2022-11-02 Microvention, Inc. Implant delivery system
CN113100862B (en) * 2021-04-08 2022-11-08 苏坤雄 Lying device with pressing hemostasis function

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296622B1 (en) * 1998-12-21 2001-10-02 Micrus Corporation Endoluminal device delivery system using axially recovering shape memory material
US6500149B2 (en) * 1998-08-31 2002-12-31 Deepak Gandhi Apparatus for deployment of micro-coil using a catheter
US6224610B1 (en) * 1998-08-31 2001-05-01 Micrus Corporation Shape memory polymer intravascular delivery system with heat transfer medium

Also Published As

Publication number Publication date
AU2002320643A1 (en) 2004-02-16
WO2004010877A1 (en) 2004-02-05
CA2441396C (en) 2010-07-13

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EEER Examination request
MKLA Lapsed

Effective date: 20160719