Patent US3393364A successfully refreshed from Google Patents.
Patent US3149186A successfully refreshed from Google Patents.
US3149186A
Expired / Lapsed
US
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Method for making a catheter
Assignee: Don Baxter Inc
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Filing: 1962-02-09
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Granted: 1964-09-15
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Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Coanda George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0015; A61M1/00; A61M1/14; A61M1/28; A61M1/285; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0481; Y10T83/283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A METHOD OF MAKING A CATHETER FOR PERITONEAL DIALYSIS COMPRISING: CUTTING A LENGTH OF EXTRUDED, THERMOPLASTIC TUBING, SAID TUBING HAVING THE DESIRED PHYSICAL PROPERTIES AND INCLUDING A BORE DEFINED BY A GENERALLY CYLINDRICAL, SEMIRIGID, SELF-SUPPORTING WALL; COATING A POINTED PIN WITH SILICONE; HEATING SAID PIN TO A TEMPERATURE ABOVE THE SOFTENING POINT BUT BELOW THE MELTING POINT OF THE TUBING; PRESSING THE POINT OF THE HEATED PIN AGAINST THE OUTER SURFACE OF THE TUBING WALL NEAR ONE END OF THE TUBING TO FORM A PERMANENT INDENTATION; FURTHER PRESSING THE POINT OF THE PIN AGAINST THE SIDE WALL FORCING THE PIN TO PIERCE SAID WALL AND ENTER THE BORE OF THE TUBING; STOPPING THE MOVEMENT OF SAID PIN WHILE THE POINT IS IN THE TUBE BORE AND BEFORE THE POINT CONTACTS THE OPPOSITE WALL OF THE TUBING; RETRACTING THE PIN FROM THE TUBING WALL, THE SILICONE SERVING TO RELEASE THE PIN WITHOUT CAUSING PROJECTING DISCONTINUTIES ON THE OUTER SURFACE OF THE TUBING; FORMING A CURVED SECTION ALONG THE PERFORATED END PORTION OF THE TUBING; AND FORMING A SMOOTH ROUNDED TIP ON THE END OF SAID PORTION.
Claim 2
Independent Claim
185 words
A METHOD OF MAKING A CATHETER FOR PERITONEAL DIALYSIS COMPRISING: CUTTING A LENGTH OF EXTRUDED, THERMOPLASTIC TUBING, SAID TUBING HAVING THE DESIRED PHYSICAL PROPERTIES AND INCLUDING A BORE DEFINED BY A GENERALLY CYLINDRICAL, SEMIRIGID, SELF-SUPPORTING WALL; COATING A POINTED PIN WITH SILICONE; HEATING SAID PIN TO A TEMPERATURE ABOVE THE SOFTENING POINT BUT BELOW THE MELTING POINT OF THE TUBING; PRESSING THE POINT OF THE HEATED PIN AGAINST THE OUTER SURFACE OF THE TUBING WALL NEAR ONE END OF THE TUBING TO FORM A PERMANENT INDENTATION; FURTHER PRESSING THE POINT OF THE PIN AGAINST THE SIDE WALL FORCING THE PIN TO PIERCE SAID WALL AND ENTER THE BORE OF THE TUBING; STOPPING THE MOVEMENT OF SAID PIN WHILE THE POINT IS IN THE TUBE BORE AND BEFORE THE POINT CONTACTS THE OPPOSITE WALL OF THE TUBING; RETRACTING THE PIN FROM THE TUBING WALL, THE SILICONE SERVING TO RELEASE THE PIN WITHOUT CAUSING PROJECTING DISCONTINUTIES ON THE OUTER SURFACE OF THE TUBING; FORMING A CURVED SECTION ALONG THE PERFORATED END PORTION OF THE TUBING; AND FORMING A SMOOTH ROUNDED TIP ON THE END OF SAID PORTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |