US3611965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable guide needle
Assignee: Illinois Tool Works Inc
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Filing: 1969-06-02
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Granted: 1971-10-12
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Expires: 1989-06-02
Abstract
Abstract Methods of forming detachable guide needle devices which are utilized in conjunction with flexible catheters in withdrawing or introducing fluids relative to a body, said method including the stamping of a guide needle blank, the impression of break-apart hinge means therein, and the folding thereof in a manner which will provide separation of the guide needle into detached sections after use thereof for complete removal from an associated flexible catheter.
Inventors
- 👤 Carl W Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:20
CPC Classifications
B; B21; B21G; B21G1/00; B21G1/08; A; A61; A61M; A61M25/00; A61M25/0009; A61M25/01; A61M25/06; A61M25/065
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
190 words
The method of forming a detachable, one-piece, hollow guide needle which is capable of being used with a flexible catheter in withdrawing or introducing fluids relative to a body, comprising the steps of stamping from sheet stock material an elongated guide needle blank having handle means on opposite sides thereof at one end, folding said elongated guide needle blank throughout its longitudinal length into a U-shaped configuration, impressing in central surface portions of said U-shaped blank configuration break-apart hinge means throughout the entire longitudinal extent thereof by forming an intermittently scored longitudinal portion with integral, frangible connecting webs between the scored portions, said integral frangible connecting webs being formed by impressing depressions of lesser depth than said scored portions in said needle blank, and thereafter folding said U-shaped guide needle blank until opposite sides of said blank away from said handle means are juxtaposed relative to one another to provide a line of separation therebetween, said handle means on opposite sides of said blank being folded to a position of initial juxtaposition relative to one another as the remaining portions of the guide needle are folded in the aforementioned manner.
Claim 2
Independent Claim
190 words
The method of forming a detachable, one-piece, hollow guide needle which is capable of being used with a flexible catheter in withdrawing or introducing fluids relative to a body, comprising the steps of stamping from sheet stock material an elongated guide needle blank having handle means on opposite sides thereof at one end, folding said elongated guide needle blank throughout its longitudinal length into a U-shaped configuration, impressing in central surface portions of said U-shaped blank configuration break-apart hinge means throughout the entire longitudinal extent thereof by forming an intermittently scored longitudinal portion with integral, frangible connecting webs between the scored portions, said integral frangible connecting webs being formed by impressing depressions of lesser depth than said scored portions in said needle blank, and thereafter folding said U-shaped guide needle blank until opposite sides of said blank away from said handle means are juxtaposed relative to one another to provide a line of separation therebetween, said handle means on opposite sides of said blank being folded to a position of initial juxtaposition relative to one another as the remaining portions of the guide needle are folded in the aforementioned manner.
Claim 3
Dependent Claim
43 words
The method as set forth in claim 1 wherein said blank is folded into said U-shaped configuration by first deforming opposite edge portions of said blank into generally opposed upstanding leg portions and then shaping the thus formed blank into said U-shaped configuration.
Claim 4
Dependent Claim
30 words
The method as set forth in claim 1 wherein the intermittently scored longitudinal portion and the integral, frangible connecting webs are impressed in said guide needle blank in consecutive sequence.
Claim 5
Dependent Claim
28 words
The method as set forth in claim 1 wherein the intermittently scored longitudinal portion and the integral, frangible connecting webs are simultaneously impressed in said guide needle blank.
Claim 6
Dependent Claim
29 words
The method as set forth in claim 1 including the step of providing a sharpened portion on the elongated guide needle at the end thereof opposite said handle means.
Claim 7
Dependent Claim
22 words
The method as set forth in claim 1 wherein the sharpened portion is formed after the guide needle assumes its ultimate configuration.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |