US3596658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable guide needle
Assignee: Illinois Tool Works Inc
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Filing: 1969-05-22
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Granted: 1971-08-03
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Expires: 1989-05-22
Abstract
Abstract A sheet material element is provided with a plurality of spaced scored portions along a predetermined path and frangible connecting webs are provided between the spaced scored portions. In the illustrated embodiment, detachable guide needle devices are utilized in conjunction with flexible catheters in withdrawing or introducing fluids relative to a body, have features incorporated therein which permit separation of the guide needle into detached sections after use thereof for complete removal from an associated flexible catheter.
Inventors
- 👤 Carl W Lange
- 👤 Frank J Rychlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:20
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/065
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
A detachable guide needle for use with a flexible catheter in withdrawing or introducing fluids relative to a body, said needle comprising a hollow, one-piece, elongated sheet material element having handle means at one end and a sharpened configuration at the other end for insertion of said needle into said body, detachment means for removing said needle from said catheter after insertion into said body including a line of separation and break-apart hinge means each being generally opposed to each other and extending longitudinally throughout the entire length of said needle, said break-apart hinge means having a plurality of spaced scored portions along a predetermined longitudinal path with frangible connecting webs between the spaced scored portions, said frangible connecting webs being relatively thicker than the spaced scored portion along the predetermined longitudinal path and extending upwardly within the hollow material element whereby said detachable guide needle can be inserted into a body without damage to skin tissue and then withdrawn therefrom for opening of said guide needle along said line of separation to a position where the frangible connecting webs are severed providing detached sections of the needle facilitating its complete removal from the catheter.
Claim 2
Dependent Claim
195 words
A detachable guide needle for use with a flexible catheter in withdrawing or introducing fluids relative to a body, said needle comprising a hollow, one-piece, elongated sheet material element having handle means at one end and a sharpened configuration at the other end for insertion of said needle into said body, detachment means for removing said needle from said catheter after insertion into said body including a line of separation and break-apart hinge means each being generally opposed to each other and extending longitudinally throughout the entire length of said needle, said break-apart hinge means having a plurality of spaced scored portions along a predetermined longitudinal path with frangible connecting webs between the spaced scored portions, said frangible connecting webs being relatively thicker than the spaced scored portion along the predetermined longitudinal path and extending upwardly within the hollow material element whereby said detachable guide needle can be inserted into a body without damage to skin tissue and then withdrawn therefrom for opening of said guide needle along said line of separation to a position where the frangible connecting webs are severed providing detached sections of the needle facilitating its complete removal from the catheter.
Claim 3
Dependent Claim
25 words
The detachable guide needle as set forth in claim 1, wherein the relatively thicker, weakened portions of the integral frangible connecting webs are also scored.
Claim 4
Dependent Claim
38 words
The detachable guide needle as set forth in claim 1 wherein said handle means comprises integral wing sections disposed on opposite sides of said line of separation to facilitate opening of said needle along said line of separation.
Claim 5
Dependent Claim
66 words
The detachable guide needle as set forth in claim 3 wherein the integral wing sections are initially juxtaposed relative to one another with corresponding portions of each wing section overlapping one another and the remaining portions of the wing sections being longitudinally offseT from one another by an amount sufficient to permit separation thereof and consequent opening of said hollow element along said line of separation.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |