US5792415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a balloon catheter
Assignee: Cordis US Corp
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Filing: 1996-03-07
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Granted: 1998-08-11
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Expires: 2016-03-07
Abstract
Abstract A method is provided for manufacturing a balloon for a catheter. The method comprises the steps of providing a mold having a mold cavity that generally corresponds to an intended expanded form of the balloon. Securing elements are provided at opposite ends of the mold cavity for securing end sections of a tubular parison. The end sections of the tubular parison are twisted in opposite directions with respect to each other. The end sections of the tubular parison are secured in the securing elements, the parison is heated, and a pressure differential is created between the inside and the outside of the parison to cause it to expand into a balloon against the walls of the mold cavity. The previously twisted end sections of the parison result in the balloon transition sections having spiral ridges, allowing the balloon to be folded into a small diameter.
Inventors
- 👤 Lucas Johannes Hijlkema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:08
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1029; A61M25/1038; A61M25/1002; A61M2025/1004
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A method for manufacturing a balloon for a catheter, the balloon having a large central section, opposite end sections and transition sections between the opposite end sections and the large central section, which method comprises the steps of: providing a mold having a mold cavity generally corresponding to an intended expanded form of the balloon; providing securing elements at opposite ends of the mold cavity for securing end sections of a tubular parison; twisting only the end sections of the tubular parison; securing the twisted end sections of the tubular parison in the securing elements; heating the parison; creating a pressure differential between an inside and an outside of the parison to cause the parison to expand into the balloon against walls of the mold cavity; wherein the previously secured and twisted end sections of the parison result in only the balloon transition sections having spiral ridges.
Claim 2
Independent Claim
147 words
A method for manufacturing a balloon for a catheter, the balloon having a large central section, opposite end sections and transition sections between the opposite end sections and the large central section, which method comprises the steps of: providing a mold having a mold cavity generally corresponding to an intended expanded form of the balloon; providing securing elements at opposite ends of the mold cavity for securing end sections of a tubular parison; twisting only the end sections of the tubular parison; securing the twisted end sections of the tubular parison in the securing elements; heating the parison; creating a pressure differential between an inside and an outside of the parison to cause the parison to expand into the balloon against walls of the mold cavity; wherein the previously secured and twisted end sections of the parison result in only the balloon transition sections having spiral ridges.
Claim 3
Dependent Claim
24 words
A method as defined in claim 1, in which the end sections of the tubular parison are twisted in opposite directions from each other.
Claim 4
Dependent Claim
28 words
A method as defined in claim 2, in which each of the end sections of the tubular parison are twisted in the direction of a helix extending clockwise.
Claim 5
Dependent Claim
22 words
A method as defined in claim 1, in which the parison is extruded and is prestretched before being secured in the mold.
Claim 6
Dependent Claim
33 words
A method as defined in claim 1, wherein the intended expanded form is an intermediate form, and the heated, expanded balloon is transferred to another mold, followed by cooling down of the balloon.
Claim 7
Dependent Claim
33 words
A method as defined in claim 1, in which the end sections of the parison are each twisted in a clockwise direction substantially about an angle of 270° in relation to each other.
References Cited (Backward Citations)
US3097058A
Cited
DE2634382A1
Cited
US4935190A
Cited
EP0304258A2
Cited
US4906244A
Cited
EP0376451A2
Cited
US5041125A
Cited
US5015230A
Cited
EP0439202A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |