US5084023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bloodless catheter with self-shielding needle
Assignee: Ethicon Endo Surgery Inc
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Filing: 1990-03-22
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Granted: 1992-01-28
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Expires: 2010-03-22
Abstract
Abstract A catheter with a double membrane gasket and a locking needle guard is disclosed. The gasket prevents blood from seeping through the catheter hub. The locking needle guard prevents the user from inadvertent needle sticks.
Inventors
- 👤 Francis P. Lemieux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:22
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0612; A61M25/0631; A61M25/0606; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; Y; Y10; Y10S; Y10S604/00; Y10S604/905
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
106 words
A catheter assembly comprising: a catheter attached to a catheter hub; a double membrane emplaced in said catheter hub comprising a first membrane and a second membrane separated by a chamber having a longitudinal axis, said second membrane slidable in a direction transverse to said longitudinal axis; a needle insertable into said catheter through said catheter hub; a needle guard attached to said catheter hub wherein said needle is insertable through said needle guard into said catheter hub; said needle slidable relative to said needle guard, catheter hub and catheter through said longitudinal axis; and locking means preventing removal of said needle from said needle guard.
Claim 2
Dependent Claim
106 words
A catheter assembly comprising: a catheter attached to a catheter hub; a double membrane emplaced in said catheter hub comprising a first membrane and a second membrane separated by a chamber having a longitudinal axis, said second membrane slidable in a direction transverse to said longitudinal axis; a needle insertable into said catheter through said catheter hub; a needle guard attached to said catheter hub wherein said needle is insertable through said needle guard into said catheter hub; said needle slidable relative to said needle guard, catheter hub and catheter through said longitudinal axis; and locking means preventing removal of said needle from said needle guard.
Claim 3
Dependent Claim
39 words
The catheter assembly of claim 1 further comprising said needle guard having a tubular configuration and said needle insertable within said needle guard in a mating relationship, said needle containing a notch on which to lock said needle guard.
Claim 4
Dependent Claim
19 words
The catheter assembly of claim 2 wherein said needle guard contains a tab capable of locking on said notch.
Claim 5
Dependent Claim
16 words
The catheter assembly of claim 3 wherein said needle guard is removable from said catheter hub.
Claim 6
Dependent Claim
41 words
The catheter assembly of claim 4 wherein said needle guard and catheter hub are slidable in relation to each other and said needle guard is held on said catheter hub in locked relationship when said needle is inserted into said catheter.
Claim 7
Dependent Claim
26 words
The assembly of claim 5 wherein said needle guard is removably attached to a plate on said catheter hub, said plate holding a side port connector.
Claim 8
Dependent Claim
29 words
The assembly of claim 6 wherein said connector is rotatable into a position on said catheter hub wherein an infusion set is capable of supplying solution through said catheter.
Claim 9
Dependent Claim
28 words
The assembly of claim 6 wherein said connector is slidable into position on said catheter hub wherein an infusion set is capable of supplying solution through said catheter.
Claim 10
Dependent Claim
30 words
The assembly of claim 7 wherein said catheter hub and said plate each contain a wing aligned with one another and wherein said side port provides infusion to said catheter.
Claim 11
Dependent Claim
21 words
The assembly of claim 8 wherein said catheter hub and said plate each contain a wing for attachment to a patient.
Claim 12
Dependent Claim
85 words
A catheter assembly comprising: an insertion needle; a catheter attached to a catheter hub; a gasket in said catheter hub and containing a double membrane separated by a chamber, said chamber having a longitudinal axis; said needle insertable into said catheter though said double membrane and across said chamber along said longitudinal axis; wherein said double membrane comprises a first membrane and second membrane separated by said chamber, and said second membrane is slidable in a direction transverse to the longitudinal axis of said chamber.
Claim 13
Dependent Claim
85 words
A catheter assembly comprising: an insertion needle; a catheter attached to a catheter hub; a gasket in said catheter hub and containing a double membrane separated by a chamber, said chamber having a longitudinal axis; said needle insertable into said catheter though said double membrane and across said chamber along said longitudinal axis; wherein said double membrane comprises a first membrane and second membrane separated by said chamber, and said second membrane is slidable in a direction transverse to the longitudinal axis of said chamber.
Claim 14
Dependent Claim
38 words
The catheter assembly of claim 11 further comprising said needle insertable into a needle guard, said needle guard insertable into said catheter hub; said needle further comprising locking means capable of locking said needle to said needle guard.
Claim 15
Dependent Claim
26 words
The catheter assembly of claim 1 wherein said needle further contains a notch along the side of said needle, said notch locking on said needle guard.
Claim 16
Dependent Claim
20 words
The catheter assembly of claim 13 wherein said needle guard contains a tab, said tab insertable into said needle notch.
Claim 17
Dependent Claim
16 words
The catheter assembly of claim 14 wherein said needle guard is removable from said catheter hub.
Claim 18
Dependent Claim
23 words
The assembly of claim 11 wherein said needle pierces said second membrane upon the sliding of said second membrane relative to said chamber.
Claim 19
Dependent Claim
24 words
The assembly of claim 16 wherein said second membrane has a memory to return to a relaxed position upon the removal of said needle.
Claim 20
Dependent Claim
30 words
The assembly of claim 11 wherein said needle is insertable into said first membrane and seals upon the removal of said needle from said catheter hub and said first membrane.
Claim 21
Dependent Claim
22 words
The catheter assembly of claim 11 wherein said double membrane further comprises a spacer containing said chamber for insertion of said needle.
Claim 22
Dependent Claim
24 words
The catheter assembly of claim 19 wherein said second membrane is movable relative to said spacer in order to be pierced by said needle.
Claim 23
Dependent Claim
21 words
The catheter assembly of claim 20 wherein said second membrane retracts to a relaxed position upon the removal of said needle.
Claim 24
Dependent Claim
17 words
The catheter assembly of claim 21 wherein a said first and second membranes are comprised of latex.
Claim 25
Dependent Claim
17 words
The catheter assembly of claim 21 wherein said first membrane closes upon the retraction of said needle.
Claim 26
Dependent Claim
35 words
The catheter assembly of claim 21 wherein said second membrane is attached to a slidable member movable relative to said spacer in order to insert said needle into said slidable member and said second membrane.
References Cited (Backward Citations)
US4349023A
Cited
US4430081A
Cited
US4518383A
Cited
US4576199A
Cited
US4735614A
Cited
US4929235A
Cited
US4863432A
Cited
US4895346A
Cited
US4952207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |