US3568673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle bevel guard for intravenous catheter
Assignee: CR Bard Inc
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Filing: 1968-11-04
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Granted: 1971-03-09
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Expires: 1988-11-04
Abstract
Abstract A hinged and closeable guard for maintaining the sterility of an intravenous needle prior to use and for maintaining the catheter in axial alignment with the needle during use.
Inventors
- 👤 Calvin C Cowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:42
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/3216
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
A needle bevel guard for use with an intravenous catheterization assembly comprising a hollow needle having a beveled point and a hub and a plastic catheter movable through said needle to project beyond said point, constituted by two elongated portions hinged together along one edge to permit bringing faces of said portions substantially into contact flatwise, each of said faces being substantially flat and provided with a medial groove spaced from the hinged edges and said grooves being complementary to form, when the faces are substantially in contact, a passageway having zones sized to accommodate, respectively, the hub, the needle and the catheter, and to retain the needle and catheter in axial alignment when the catheter is moved to a projecting position, the thickness of the sections in a direction perpendicular to the plane of said faces being substantially less than the width of said sections in said plane.
Claim 2
Dependent Claim
149 words
A needle bevel guard for use with an intravenous catheterization assembly comprising a hollow needle having a beveled point and a hub and a plastic catheter movable through said needle to project beyond said point, constituted by two elongated portions hinged together along one edge to permit bringing faces of said portions substantially into contact flatwise, each of said faces being substantially flat and provided with a medial groove spaced from the hinged edges and said grooves being complementary to form, when the faces are substantially in contact, a passageway having zones sized to accommodate, respectively, the hub, the needle and the catheter, and to retain the needle and catheter in axial alignment when the catheter is moved to a projecting position, the thickness of the sections in a direction perpendicular to the plane of said faces being substantially less than the width of said sections in said plane.
Claim 3
Dependent Claim
35 words
A needle bevel guard according to claim 1, in which the zone sized to accommodate the catheter includes at least a part engaging the catheter to prevent axial displacement thereof with respect to the needle.
Claim 4
Dependent Claim
23 words
A needle bevel guard according to claim 1, in which the zone sized to accommodate the hub is of outwardly flaring cross section.
Claim 5
Dependent Claim
49 words
A needle bevel guard according to claim 1, in which the zone sized to accommodate the catheter includes at least a part engaging the catheter to prevent axial displacement thereof with respect to the needle, and the zone sized to accommodate the hub is of outwardly flaring cross section.
Claim 6
Dependent Claim
44 words
A needle bevel guard according to claim 1, which includes complementary snap-acting releasable fastening devices projecting from the edges of said portions opposite the hinged edges and automatically engageable when said faces are moved toward contacting position for holding the portions in closed position.
Claim 7
Dependent Claim
22 words
A needle bevel guard according claim 1 in which the portions are hinged together along substantially the entire length of one edge.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |