Patent US3677244A successfully refreshed from Google Patents.
US3677244A
Expired / Lapsed
US
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Removable catheter needle
Assignee: Extracorporeal Medical Specialties Inc
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Filing: 1969-08-04
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Granted: 1972-07-18
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Expires: 1989-08-04
Abstract
Abstract A hollow catheter needle which is split in half longitudinally and the two mating halves are secured together with heat shrinkable material which is easily cut by a sharp instrument such as a scapel and removed so that the two halves of the needle can be removed from around a flexible tubular catheter having an enlarged fitting on one end after the other end of the catheter has been threaded through the hollow needle and is properly positioned in the patient.
Inventors
- 👤 Robert J Hassinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/065
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
126 words
A surgical needle for performing medical operations having one end bevel sharpened for insertion in a patient and having at the other end an enlarged laterally protruding portion, an elongated hollow shaft portion therebetween comprising separate segments which mate together into an operable structure and also separate completely from each other in lateral fashion, at least one band laterally surrounding and extending axially along at least part of the shaft portion, the band being in tight engagement with the shaft portion and operating to secure the separate segments thereof together into an operable structure, the band being of a heat shrinkable material, the material being easily removable for disengaging from the surgical needle to permit complete separation of the segments from each other in lateral fashion.
Claim 2
Dependent Claim
126 words
A surgical needle for performing medical operations having one end bevel sharpened for insertion in a patient and having at the other end an enlarged laterally protruding portion, an elongated hollow shaft portion therebetween comprising separate segments which mate together into an operable structure and also separate completely from each other in lateral fashion, at least one band laterally surrounding and extending axially along at least part of the shaft portion, the band being in tight engagement with the shaft portion and operating to secure the separate segments thereof together into an operable structure, the band being of a heat shrinkable material, the material being easily removable for disengaging from the surgical needle to permit complete separation of the segments from each other in lateral fashion.
Claim 3
Dependent Claim
22 words
A surgical needle as in claim 1 wherein the edge of the band nearest the sharpened end of the needle is bevelled.
Claim 4
Dependent Claim
34 words
A surgical needle as in claim 1 wherein the shaft portion is cylindrical and comprises two separate segments which mate together in a flat plane in which the longitudinal axis of the cylinder lies.
Claim 5
Dependent Claim
70 words
A surgical needle as in claim 3 wherein the enlarged laterally protruding portion comprises two separate segments, each integrally associated with one of the separate segments of the hollow shaft portion, a second band of heat shrinkable material laterally surrounding the enlarged laterally protruding portion and in tight engagement therewith to secure the separate segments thereof together, the second band also being easily removable for disengaging from the surgical needle.
References Cited (Backward Citations)
US3037620A
Cited
US3334737A
Cited
US3330278A
Cited
US3359978A
Cited
US3382872A
Cited
FR1483989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |