Patent US4611382A successfully refreshed from Google Patents.
US4611382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a fistula
Assignee: JOULE` Inc A NJ CORP
•
Filing: 1984-04-23
•
Granted: 1986-09-16
•
Expires: 2004-04-23
Abstract
Abstract A method of manufacturing a fistula consisting of a needle mounted on a plastic handle or wing. The plastic wings are formed by continuously extruding a plastic strip having the wing cross section. The outer end of the extruded plastic is blanked to partially shape and outline an individual wing. Thereafter, a needle is inserted into a hollow core on the endmost partially blanked wing and a needle guard is positioned over the needle. Finally, the completed fistula is removed from the end of the extruded strip by a final cut or punching for producing a finished fistula.
Inventors
- 👤 Julie L. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:52
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0014; A61M5/00; A61M5/14; A61M5/158; B; B29; B29C; B29C48/00; B29C48/001; B29C48/0022; B29C2793/00; B29C2793/0027; B29C48/03; B29C48/09; B29C48/12; B29C48/13; B29K; B29K2995/00; B29K2995/0037; B29K2995/0072; Y; Y10; Y10S; Y10S29/00; Y10S29/037; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49995
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
A method of manufacturing a fistula comprising the steps of: extruding a plastic strip of indeterminate length having a pre-determined cross section with spaced flaring wing-like portions extending outwardly from a hollow core portion; blanking the endmost portion of said strip for defining individual flared wing-like members in said wing-like portions extending outwardly from said core portion; inserting a hollow core needle into said plastic core portion with the inserted end of said needle being positioned at a rearwardmost portion of the blanked wing-like member; placing a hollow molded guard member over said needle with said guard frictionally engaging an end portion of said core portion; cutting said blanked endmost portion free from the remainder of said extruded plastic strip thereby forming a completed fistula with taper wing portions and a succeeding forward wing portion.
Claim 2
Independent Claim
135 words
A method of manufacturing a fistula comprising the steps of: extruding a plastic strip of indeterminate length having a pre-determined cross section with spaced flaring wing-like portions extending outwardly from a hollow core portion; blanking the endmost portion of said strip for defining individual flared wing-like members in said wing-like portions extending outwardly from said core portion; inserting a hollow core needle into said plastic core portion with the inserted end of said needle being positioned at a rearwardmost portion of the blanked wing-like member; placing a hollow molded guard member over said needle with said guard frictionally engaging an end portion of said core portion; cutting said blanked endmost portion free from the remainder of said extruded plastic strip thereby forming a completed fistula with taper wing portions and a succeeding forward wing portion.
Claim 3
Dependent Claim
23 words
The method as claimed in claim 1 in which said first blanking step comprises forming generally triangular cutouts in said extruded plastic strip.
Claim 4
Dependent Claim
27 words
The method as claimed in claim 1 which further comprises molding said wing-like portions with relatively thin cross-sections extending outwardly from a generally cylindrical hollow core portion.
Claim 5
Dependent Claim
34 words
The method as claimed in claim 1 in which said blanking forms an endmost portion on said core portion extending beyond said wing-like members and having a generally cylindrical outer surface engaging said guard.
References Cited (Backward Citations)
US2539510A
Cited
US3179727A
Cited
US3756235A
Cited
US3825002A
Cited
US4447479A
Cited
US4192304A
Cited
US4413992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |