US3304353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of catheter manufacture
Assignee: PHARMASEAL LAB
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Filing: 1963-03-25
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Granted: 1967-02-14
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Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Harautuneian Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:07
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1034; B; B29; B29L; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A METHOD OF MAKING A THERMOPLASTIC MEDICAL RETENTION CATHETER COMPRISING THE STEPS OF: (A) FORMING A THERMOPLASTIC TUBE WITH A WALL SURROUNDING A MAIN LUMEN PASSAGE AND WITH A SECOND PASSAGE IN THIS WALL; (B) CUTTING THE TUBE TO LENGTH; (C) CLOSING OFF ONE END OF SAID SECOND PASSAGE; (D) FORMING AN OPENING IN THE WALL OF THE TUBE COMMUNICATING BETWEEN AN EXTERIOR OF THE TUBE AND THE SECOND PASSAGE; (E) APPLYING A WATER SOLUBLE PARTITIONING COATING CYLINDRICALLY AND CONTINUOUSLY AROUND THE TUBE ADJACENT SAID OPENING; (F) COVERING SAID COATING WITH A THERMOPLASTIC BALLOON LAYER FROM A LIQUID ORGANIC SOLVENT SYSTEM, SAID BALLOON LAYER BONDING TO THE TUBE BEYOND ENDS OF SAID COATING, WHICH COATING REMAINS INTACT DURING THIS STEP; AND (G) DISSOLVING THE PARTITIONING COATING BY AN AQUEOUS LIQUID INJECTED THROUGH THE SECOND PASSAGE AND WALL OPENING TO INFLATE THE BALLOON, WHEREBY MATERIAL OF SAID PARTITIONING COATED DISSOLVED IN THE INFLATION LIQUID CAN EXIT THROUGH THE OPENING IN THE TUBE WALL AND ALONG THE SECOND PASSAGE AS THE INFLATION LIQUID IS WITHDRAWN TO DEFLATE THE BALLOON.
Claim 2
Independent Claim
177 words
A METHOD OF MAKING A THERMOPLASTIC MEDICAL RETENTION CATHETER COMPRISING THE STEPS OF: (A) FORMING A THERMOPLASTIC TUBE WITH A WALL SURROUNDING A MAIN LUMEN PASSAGE AND WITH A SECOND PASSAGE IN THIS WALL; (B) CUTTING THE TUBE TO LENGTH; (C) CLOSING OFF ONE END OF SAID SECOND PASSAGE; (D) FORMING AN OPENING IN THE WALL OF THE TUBE COMMUNICATING BETWEEN AN EXTERIOR OF THE TUBE AND THE SECOND PASSAGE; (E) APPLYING A WATER SOLUBLE PARTITIONING COATING CYLINDRICALLY AND CONTINUOUSLY AROUND THE TUBE ADJACENT SAID OPENING; (F) COVERING SAID COATING WITH A THERMOPLASTIC BALLOON LAYER FROM A LIQUID ORGANIC SOLVENT SYSTEM, SAID BALLOON LAYER BONDING TO THE TUBE BEYOND ENDS OF SAID COATING, WHICH COATING REMAINS INTACT DURING THIS STEP; AND (G) DISSOLVING THE PARTITIONING COATING BY AN AQUEOUS LIQUID INJECTED THROUGH THE SECOND PASSAGE AND WALL OPENING TO INFLATE THE BALLOON, WHEREBY MATERIAL OF SAID PARTITIONING COATED DISSOLVED IN THE INFLATION LIQUID CAN EXIT THROUGH THE OPENING IN THE TUBE WALL AND ALONG THE SECOND PASSAGE AS THE INFLATION LIQUID IS WITHDRAWN TO DEFLATE THE BALLOON.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |