Method and apparatus for making coude catheters
US4292270A · kind A · utility
33Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1979 |
| Grant date | Sep 29, 1981 |
| Priority date | — |
| Expiry date | Jun 22, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7542
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making a elbowed end (coude) catheter which comprises: inserting an end of a flexible, thermoplastic tube into the bore of a closed-end, hollow, tubular die which defines the desired curve of the elbowed end catheter. The tubular die is heated to a temperature above the plastic melt temperature of the thermoplastic tube, while advancing the tube into the die, to cause at least about 0.5 cm. of the tube end to collapse into a generally solid, curved mass. The die and tube contained therein are then cooled to a temperature below the plastic melt temperature, and the tube is withdrawn having a closed, formed coude tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.