US4257421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gastro-intestinal tube guide and stiffener
Assignee: Ivac Medical Systems Inc
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Filing: 1979-01-10
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Granted: 1981-03-24
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Expires: 1999-01-10
Abstract
Abstract A device for use in inserting soft and flexible tubular devices into a body passageways, said device characterized by being formed from a flexible base, such as multiple-strand nylon thread and having deposited upon said flexible base a soluble material such as gelatin, said soluble material characterized by being less flexible than said base in its undissolved state.
Inventors
- 👤 Charles B. Beal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:02
CPC Classifications
A; A61; A61J; A61J15/00; A61J15/0003; A61J15/0007; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/09016; A61M25/09025; A61J15/0026; A61J2205/00; A61J2205/20; A61M25/0102; A61M25/0105; A61M25/0108
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
A guide for introducing a tubular device into a selected body passageway comprising an elongated core member of flexible base material consisting of a plurality of threads and a soluble coating on said base material, said coating characterized in its undissolved state by being less flexible than said tubular device flexible base material.
Claim 2
Dependent Claim
53 words
A guide for introducing a tubular device into a selected body passageway comprising an elongated core member of flexible base material consisting of a plurality of threads and a soluble coating on said base material, said coating characterized in its undissolved state by being less flexible than said tubular device flexible base material.
Claim 3
Dependent Claim
17 words
A guide according to claim 1 wherein said base material consists of a plurality of nylon threads.
Claim 4
Dependent Claim
24 words
A guide according to claim 1 wherein said base material consists of a plurality of nylon threads and said soluble coating is USP gelatin.
Claim 5
Dependent Claim
22 words
A guide according to claim 3 wherein said soluble coating is characterized by having a plurality of areas of slightly enlarged diameter.
Claim 6
Independent Claim
51 words
A method for making a guide for inserting a tubular device into a selected body passageway consisting of coating a flexible base material comprising a plurality of threads with a less flexible soluble material while twisting said threads, to form a plurality of areas of said guide of slightly enlarged diameter.
Claim 7
Independent Claim
51 words
A method for making a guide for inserting a tubular device into a selected body passageway consisting of coating a flexible base material comprising a plurality of threads with a less flexible soluble material while twisting said threads, to form a plurality of areas of said guide of slightly enlarged diameter.
References Cited (Backward Citations)
US2244027A
Cited
US2548602A
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US2508690A
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US2593980A
Cited
US3358684A
Cited
GB1435797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |