Patent US3603311A successfully refreshed from Google Patents.
US3603311A
Expired / Lapsed
US
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Sliding wedge-type removable guide needle
Assignee: Illinois Tool Works Inc
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Filing: 1970-02-19
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Granted: 1971-09-07
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Expires: 1990-02-19
Abstract
Abstract A hollow guide needle for piercing a body portion to position therein a flexible catheter for withdrawing or introducing fluids relative to the body portion, and which includes a hollow tube longitudinally slotted to provide frangible connecting webs between slots, and a wedge member slidably mounted on the tube and guided in the slots for forced longitudinal movement along the tube for severing the frangible webs to separate the tube into discrete sections which may then be completely removed from the body-inserted catheter.
Inventors
- 👤 James A Huggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:57
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/065
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A detachable hollow guide needle assembly for insertion into a body portion and locating a flexible catheter in the body portion for withdrawing or introducing fluids relative thereto; and comprising an elongate tubular member for receiving a flexible catheter therein and having a sharpened end configuration for body insertion to locate the catheter, said tubular member having a row of longitudinally aligned slots along the length thereof with adjacent slots separated by frangible webs, and handle means including a sliding wedge member initially mounted in a slot remote from the sharpened end of the tubular member in adjacency to a first said frangible web and shaped complementally to a portion of the tubular member surface to be guided thereby when forced longitudinally along the tubular member to successively sever the frangible webs leaving sections of the tubular member readily removable after use from the bodyinserted catheter.
Claim 2
Dependent Claim
146 words
A detachable hollow guide needle assembly for insertion into a body portion and locating a flexible catheter in the body portion for withdrawing or introducing fluids relative thereto; and comprising an elongate tubular member for receiving a flexible catheter therein and having a sharpened end configuration for body insertion to locate the catheter, said tubular member having a row of longitudinally aligned slots along the length thereof with adjacent slots separated by frangible webs, and handle means including a sliding wedge member initially mounted in a slot remote from the sharpened end of the tubular member in adjacency to a first said frangible web and shaped complementally to a portion of the tubular member surface to be guided thereby when forced longitudinally along the tubular member to successively sever the frangible webs leaving sections of the tubular member readily removable after use from the bodyinserted catheter.
Claim 3
Dependent Claim
35 words
A detachable hollow guide needle as claimed in claim 1, wherein the handle means further includes a radially projecting member fixed to the tubular member remote the sharpened end thereof for grasping by an attendant.
Claim 4
Dependent Claim
30 words
A detachable hollow guide needle as claimed in claim 1, wherein the wedge member includes an arcuate portion snugly engaging the adjacent surface of the tubular member for guidance thereof.
Claim 5
Dependent Claim
39 words
A detachable hollow guide needle as claimed in claim 3, wherein the arcuate portion terminates in a radial flange portion fitting within additional slot means along the tubular member for further guidance of the wedge member when moved therealong.
Claim 6
Dependent Claim
32 words
A detachable hollow guide needle as claimed in claim 1, wherein the wedge member includes an arcuate portion fitting within the tubular member for guidance thereof while clearing an included catheter tube.
Claim 7
Dependent Claim
44 words
A detachable hollow guide needle as claimed in claim 5, wherein the arcuate portion terminates in a radial outwardly projecting flange portion fitting within additional slot means along the length of the tubular member for further guidance of the wedge member when moved therealong.
References Cited (Backward Citations)
CA628292A
Cited
US2198319A
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US3330278A
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US3359978A
Cited
US3382872A
Cited
US3550591A
Cited
DK109789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |