CA2462604A1 - Distal balloon waist material relief and method of manufacture - Google Patents

Distal balloon waist material relief and method of manufacture Download PDF

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Publication number
CA2462604A1
CA2462604A1 CA002462604A CA2462604A CA2462604A1 CA 2462604 A1 CA2462604 A1 CA 2462604A1 CA 002462604 A CA002462604 A CA 002462604A CA 2462604 A CA2462604 A CA 2462604A CA 2462604 A1 CA2462604 A1 CA 2462604A1
Authority
CA
Canada
Prior art keywords
balloon
waist
voids
catheter
dilatation 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
CA002462604A
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French (fr)
Other versions
CA2462604C (en
Inventor
Matthew Heidner
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.)
Boston Scientific Ltd Barbados
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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 CA2462604A1 publication Critical patent/CA2462604A1/en
Application granted granted Critical
Publication of CA2462604C publication Critical patent/CA2462604C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1034—Joining of shaft and balloon
    • 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
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1029—Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
    • A61M2025/1031—Surface processing of balloon members, e.g. coating or deposition; Mounting additional parts onto the balloon member's surface
    • 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
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1093—Balloon catheters with special features or adapted for special applications having particular tip characteristics

Abstract

A balloon catheter having an improved balloon waist design in which material is removed prior to thermal processing. In one embodiment, a series of patterned voids are formed in the balloon waist to reduce the amount of polymeric material and to better control flowing polymeric material during thermal processing.

Claims (22)

1. A balloon dilation catheter, comprising:
an elongate shaft having a proximal end and a distal end; and a balloon connected to the distal end of the shaft, the balloon having an expandable region and a balloon waist, the balloon waist including a plurality of voids prior to thermal reformation that cause the balloon waist to have a reduced profile subsequent to thermal reformation.
2. A balloon dilatation catheter as in claim 1, wherein the balloon waist has a material volume per unit length, and wherein the plurality of voids reduce the material volume per unit length.
3. A balloon dilatation catheter as in claim 2, wherein the material volume per unit length decreases to cause the balloon waist to taper.
4. A balloon dilatation catheter as in claim 1, wherein the size, number and position of the plurality of voids are selected to cause the balloon waist to taper.
5. A balloon dilatation catheter as in claim 1, wherein a proximal balloon waist and a distal balloon waist include a plurality of voids prior to thermal processing that cause the balloon waists to have a reduced profile subsequent to thermal processing.
6. A balloon dilatation catheter as in claim 5, wherein the elongate shaft includes an inner tubular member disposed in an outer tubular member, and wherein the proximal balloon waist is connected to a distal end of the outer tubular member and the distal balloon waist is connected to a distal end of the inner tubular member.
7. A balloon dilatation catheter as in claim 1, wherein the plurality of voids are wedge shaped.
8. A balloon dilatation catheter as in claim 1, wherein the plurality of voids are circular.
9. A balloon dilatation catheter as in claim 1, wherein the plurality of voids are rectangular.
10. A balloon dilatation catheter as in claim 1, wherein the plurality of voids are diamond shaped.
11. A balloon dilation catheter, comprising:
an elongate shaft having a proximal and a distal end; and a molded balloon attached to the distal end of the shaft, the balloon being molded to have an expandable region and a balloon waist, the balloon waist having a material volume per unit length, wherein the material volume per unit length after attachment to the distal end of the elongate shaft is less than the material volume per unit length immediately after molding of the balloon.
12. A balloon dilatation catheter as in claim 11, wherein the material volume per unit length decreases to cause the balloon waist to taper.
13. A balloon dilatation catheter as in claim 11, wherein the material volume per unit length is controlled by the formation of a plurality of voids in the balloon waist.
14. A balloon dilatation catheter as in claim 13, wherein the size, number and position of the plurality of voids are selected to cause the balloon waist to taper.
15. A balloon dilatation catheter as in claim 13, wherein the plurality of voids are wedge shaped.
16. A balloon dilatation catheter as in claim 13, wherein the plurality of voids are circular.
17. A balloon dilatation catheter as in claim 13, wherein the plurality of voids are rectangular.
18. A balloon dilatation catheter as in claim 13, wherein the plurality of voids are diamond shaped.
19. A method of manufacturing a balloon catheter comprising the steps of:
providing a catheter shaft having a proximal end and a distal end;
providing an expandable balloon having a waist and an expandable portion;
forming a plurality of voids in the balloon waist;
thermally reforming the waist to close the voids and to reduce the profile of the waist; and attaching the waist to the distal end of the catheter shaft.
20. A method of manufacturing a balloon catheter as in claim 19, wherein the step of attaching the waist comprises a thermal bonding process.
21. A method of manufacturing a balloon catheter as in claim 20, wherein the steps of thermally reforming the waist and attaching the waist are performed simultaneously.
22. A method of manufacturing a balloon catheter as in claim 19, wherein the balloon waist comprises a polymer which melts and flows into the plurality of voids during the step of thermal reforming.
CA2462604A 2001-10-24 2002-09-12 Distal balloon waist material relief and method of manufacture Expired - Fee Related CA2462604C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/032,962 US7201763B2 (en) 2001-10-24 2001-10-24 Distal balloon waist material relief and method of manufacture
US10/032,962 2001-10-24
PCT/US2002/028995 WO2003035158A2 (en) 2001-10-24 2002-09-12 Distal balloon waist material relief and method of manufacture

Publications (2)

Publication Number Publication Date
CA2462604A1 true CA2462604A1 (en) 2003-05-01
CA2462604C CA2462604C (en) 2010-07-20

Family

ID=21867816

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2462604A Expired - Fee Related CA2462604C (en) 2001-10-24 2002-09-12 Distal balloon waist material relief and method of manufacture

Country Status (7)

Country Link
US (1) US7201763B2 (en)
EP (1) EP1443998B1 (en)
JP (1) JP4383871B2 (en)
AT (1) ATE318160T1 (en)
CA (1) CA2462604C (en)
DE (1) DE60209382T2 (en)
WO (1) WO2003035158A2 (en)

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Also Published As

Publication number Publication date
WO2003035158A3 (en) 2003-11-20
WO2003035158A2 (en) 2003-05-01
JP2005538744A (en) 2005-12-22
US20030078613A1 (en) 2003-04-24
ATE318160T1 (en) 2006-03-15
EP1443998B1 (en) 2006-02-22
DE60209382D1 (en) 2006-04-27
JP4383871B2 (en) 2009-12-16
DE60209382T2 (en) 2006-08-03
US7201763B2 (en) 2007-04-10
EP1443998A2 (en) 2004-08-11
CA2462604C (en) 2010-07-20

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