US5304136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle sheath
Assignee: Becton Dickinson and Co
•
Filing: 1992-02-07
•
Granted: 1994-04-19
•
Expires: 2012-02-07
Abstract
Abstract A needle shielding device in which, after use, a needle is confined in a chamber having a first hole through which the needle can enter the chamber. The needle is drawn into the chamber through the hole. The chamber is made up of telescopic members. The needle strikes the rear wall of the chamber causing the telescopic members to telescope apart. Once in the chamber, the needle will not readily escape through the first hole.
Inventors
- 👤 Timothy J. Erskine
- 👤 Christopher P. Steinman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:36
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0612; A61M25/0631; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/3243; A61M5/3245; A61M2005/3247; A61M2005/3249
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
98 words
An apparatus for shielding a needle comprising: containment means for containing said needle, wherein said containment means comprises: a first telescopic member comprising a front wall, said front wall having a first orifice; a second telescopic member having a rear wall such that said first telescopic member and said second telescopic member form a chamber to accommodate a needle and such that said first orifice is dimensioned to permit said needle to enter said chamber through said first orifice, wherein said rear wall has a second orifice dimensioned such that said needle cannot pass through said second orifice.
Claim 2
Independent Claim
98 words
An apparatus for shielding a needle comprising: containment means for containing said needle, wherein said containment means comprises: a first telescopic member comprising a front wall, said front wall having a first orifice; a second telescopic member having a rear wall such that said first telescopic member and said second telescopic member form a chamber to accommodate a needle and such that said first orifice is dimensioned to permit said needle to enter said chamber through said first orifice, wherein said rear wall has a second orifice dimensioned such that said needle cannot pass through said second orifice.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1 further comprising means to connect said apparatus to catheter introduction means so that said needle can be moved from said catheter introducing means into said chamber.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1 wherein at least one of said telescopic members is at least partially opaque.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 further comprising sealing means for penetrably sealing said first orifice.
Claim 6
Dependent Claim
18 words
The apparatus of claim 1 wherein said front wall is provided with collar means surrounding said front orifice.
Claim 7
Dependent Claim
12 words
The apparatus of claim 5 wherein said collar means is generally conical.
Claim 8
Dependent Claim
21 words
The apparatus of claim 1 further comprising pulling means for pulling said needle through said first orifice towards said rear wall.
Claim 9
Dependent Claim
16 words
The apparatus of claim 7 wherein said pulling means comprises stylet means attached to said needle.
Claim 10
Dependent Claim
17 words
The apparatus of claim 8 wherein said stylet means is provided with a kink adjacent said needle.
Claim 11
Dependent Claim
34 words
The apparatus of claim 7 wherein said pulling means has a smaller diameter than said needle and said second orifice is dimensioned to allow said pulling means but not said needle to pass therethrough.
Claim 12
Dependent Claim
24 words
The apparatus of claim 7 wherein said first telescopic member and said second telescopic member telescope apart when said needle has entered said chamber.
Claim 13
Dependent Claim
24 words
The apparatus of claim 7 wherein said first telescopic member and said second telescopic member telescope apart when said needle strikes said rear wall.
Claim 14
Independent Claim
90 words
An apparatus for shielding a catheter introducing needle comprising: a cylinder comprising first and second telescopic cylinders, the first cylinder having a front wall and the second cylinder having a back wall; a needle; pulling means attached to said needle; and means for connecting said cylinder to a fitting, wherein said front wall is provided with an orifice through which said needle may enter said cylinder longitudinally and said back wall is provided with an orifice through which said stylet may pass longitudinally, but through which said needle cannot pass.
Claim 15
Independent Claim
90 words
An apparatus for shielding a catheter introducing needle comprising: a cylinder comprising first and second telescopic cylinders, the first cylinder having a front wall and the second cylinder having a back wall; a needle; pulling means attached to said needle; and means for connecting said cylinder to a fitting, wherein said front wall is provided with an orifice through which said needle may enter said cylinder longitudinally and said back wall is provided with an orifice through which said stylet may pass longitudinally, but through which said needle cannot pass.
Claim 16
Dependent Claim
13 words
The apparatus of claim 13 wherein said cylinder is at least partially opaque.
Claim 17
Dependent Claim
17 words
The apparatus of claim 13 wherein said cylinders telescope apart when said needle has entered said cylinder.
Claim 18
Dependent Claim
14 words
The apparatus of claim 13 further comprising sealing means for penetrably sealing said orifice.
Claim 19
Independent Claim
123 words
An apparatus for shielding a catheter introducing needle comprising: a first cylinder having a front wall and an open end; a second cylinder having a rear wall and an open end, said front wall having a first orifice and said rear wall having a second orifice; a needle; stylet means connected to said needle for drawing said needle through said first orifice towards said rear wall, wherein said stylet has a diameter less than that of said needle; wherein said first orifice is dimensioned to allow said needle to pass longitudinally therethrough and said second orifice is dimensioned to permit said stylet but not said needle to pass longitudinally therethrough and further wherein said first cylinder and said second cylinder are telescopically interconnected.
Claim 20
Independent Claim
123 words
An apparatus for shielding a catheter introducing needle comprising: a first cylinder having a front wall and an open end; a second cylinder having a rear wall and an open end, said front wall having a first orifice and said rear wall having a second orifice; a needle; stylet means connected to said needle for drawing said needle through said first orifice towards said rear wall, wherein said stylet has a diameter less than that of said needle; wherein said first orifice is dimensioned to allow said needle to pass longitudinally therethrough and said second orifice is dimensioned to permit said stylet but not said needle to pass longitudinally therethrough and further wherein said first cylinder and said second cylinder are telescopically interconnected.
Claim 21
Dependent Claim
17 words
The apparatus of claim 17 wherein at least one of said cylinders is at least partially opaque.
Claim 22
Dependent Claim
20 words
The apparatus of claim 7 wherein said first and second cylinders telescope apart when said needle strikes said rear wall.
Claim 23
Dependent Claim
17 words
The apparatus of claim 17 wherein said stylet means is provided with a kink adjacent said needle.
Claim 24
Dependent Claim
20 words
The apparatus of claim 17 wherein said front wall comprises collar means surrounding said first orifice inside said first cylinder.
Claim 25
Dependent Claim
12 words
The apparatus of claim 21 wherein said collar means is generally conical.
References Cited (Backward Citations)
US4762516A
Cited
EP0314470A2
Cited
US5137515A
Cited
US5135502A
Cited
US4994728A
Cited
US5147326A
Cited
US4927415A
Cited
US5061246A
Cited
US4998924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-18 | 1997-10-18 | 1998-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-18 | 2001-10-18 | 2002-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-18 | 2005-10-18 | 2006-04-19 | $7700.00 | Window Closed / Lapsed |