Patent US5074847A successfully refreshed from Google Patents.
US5074847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle shield with transparency maintaining coating
Assignee: Century Plastics LLC
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Filing: 1990-04-05
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Granted: 1991-12-24
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Expires: 2010-04-05
Abstract
Abstract A device for holding a heparin lock secured to a catheter that has been previously disposed through a body portion and into an artery of a patient. The device has a cover having a wall constructed of generally flexible material. The wall includes a face having a continuous periphery and an aperture off-set from the continuous periphery. The wall additionally has a generally oval-shaped body integrally secured to the face along a substantial portion of the continuous periphery. The face and the oval-shaped body may include flanges secured at a lowermost portion thereof. The inside surface of the wall may be coated with a composition of matter that maintains the transparency of a transparent wall. The wall may also include one or more openings that are covered with one or more air permeable sheet members which are impenetrable by a liquid but allow vapor and moisture to pass through from the insides of the oval-shaped body when in a covering relation to a catheter in a body portion of a patient. A method for holding a heparin lock secured to a catheter that has been previously disposed through a body portion and into an artery of a patient. The method includes forming a hollow generally elongated cover having a face with an aperture, inserting a heparin lock into the aperture to substantially seal off the aperture, and securing the cover to the body portion to totally enclose the catheter while the heparin lock remains slidably lodged within the aperture.
Inventors
- 👤 Charles H. Greenwell
- 👤 Don W. Casey, deceased
- 👤 Gerald E. Wagnon
- 👤 James A. Miller
- 👤 Robert M. Shaw, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:50
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M2025/0246; Y; Y10; Y10S; Y10S128/00; Y10S128/26
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
66 words
A shielding device for protecting an infusion needle comprising a cover having a transparent wall; and a coating means disposed on said transparent wall for maintaining the transparency of said transparent wall, said coating means comprises a major proportion of a binding agent, a minor proportion of an emulsifying agent, and a minor proportion of an agent which causes the coating means to become more flexible.
Claim 2
Dependent Claim
66 words
A shielding device for protecting an infusion needle comprising a cover having a transparent wall; and a coating means disposed on said transparent wall for maintaining the transparency of said transparent wall, said coating means comprises a major proportion of a binding agent, a minor proportion of an emulsifying agent, and a minor proportion of an agent which causes the coating means to become more flexible.
Claim 3
Dependent Claim
55 words
The device of claim 1 wherein said coating means comprises from about 50% to about 99% by weight of the binding agent, from about 0.5% to about 30% by weight of the emulsifying agent; and from about 0.5% to about 30% by weight of said agent which causes the coating means to become more flexible.
Claim 4
Dependent Claim
52 words
The device of claim 2 wherein said binding agent comprises a first polyvinylpyrrolidone polymer having an average molecular weight of about 40,000 and a second polyvinylpyrrolidone polymer having an average molecular weight of about 360,000, wherein said first and said second polyvinylpyrrolidone polymer are combined in a weight ratio of about 1:1.
Claim 5
Dependent Claim
81 words
A shielding device for holding and protecting an infusion needle comprising a cover having a transparent wall; said transparent wall having an aperture for receiving and holding an infusion needle; and a coating means disposed on said transparent wall for maintaining the transparency of said transparent wall, said coating means comprises a major proportion of a binding agent, a minor proportion of an emulsifying agent, and a minor proportion of an agent which causes the coating means to become more flexible.
Claim 6
Dependent Claim
81 words
A shielding device for holding and protecting an infusion needle comprising a cover having a transparent wall; said transparent wall having an aperture for receiving and holding an infusion needle; and a coating means disposed on said transparent wall for maintaining the transparency of said transparent wall, said coating means comprises a major proportion of a binding agent, a minor proportion of an emulsifying agent, and a minor proportion of an agent which causes the coating means to become more flexible.
Claim 7
Dependent Claim
39 words
The shielding device of claim 4 wherein said transparent wall comprises at least one opening; and at least one air permeable sheet means, secured to said wall and covering said opening, for preventing fluids from passing through said opening.
Claim 8
Dependent Claim
20 words
The shielding device of claim 5 wherein said air permeable sheet means for preventing fluids from passing comprises spunbonded olefin.
Claim 9
Dependent Claim
32 words
The shielding device of claim 6 wherein said spunbonded olefin has a Frazier porosity in ft. 3 /ft. 2 /min. selected from the group consisting of 45, 40 and less than 1.
Claim 10
Dependent Claim
56 words
The shielding device of claim 4 wherein said coating means comprises from about 50% to about 99% by weight of said binding agent, from about 0.5% to about 30% by weight of said emulsifying agent; and from about 0.5% to about 30% by weight of said agent which causes the coating means to become more flexible.
Claim 11
Dependent Claim
53 words
The shielding device of claim 8 wherein said binding agent comprises a first polyvinylpyrrolidone polymer having an average molecular weight of about 40,000 and a second polyvinylpyrrolidone polymer having an average molecular weight of about 360,000, wherein said first and said second polyvinylpyrrolidone polymer are combined in a weight ratio of about 1:1.
Claim 12
Independent Claim
175 words
A device for holding a heparin lock secured to a catheter that is disposed through a body portion at a body entry point and into an artery of a patient, which comprises a hollow generally elongated cover having a transparent wall constructed of generally flexible material and terminating in a generally continuous periphery that forms an opening for being supported on an external surface of said body portion, said wall comprising a face having generally a pair of side edges, a top edge and a bottom edge and an aperture off-set from the side comprising a generally oval-shaped body integrally secured to the face at the pair of side edges and the top edge and tapering rearwardly and downwardly therefrom to terminate in a pair of opposed, generally parallel body edges; and a coating means transparency of said transparent wall; and said coating means comprises a major proportion of a binding agent; a minor proportion of an emulsifying agent; and a minor proportion of an agent which causes the coating means to become more flexible.
Claim 13
Independent Claim
175 words
A device for holding a heparin lock secured to a catheter that is disposed through a body portion at a body entry point and into an artery of a patient, which comprises a hollow generally elongated cover having a transparent wall constructed of generally flexible material and terminating in a generally continuous periphery that forms an opening for being supported on an external surface of said body portion, said wall comprising a face having generally a pair of side edges, a top edge and a bottom edge and an aperture off-set from the side comprising a generally oval-shaped body integrally secured to the face at the pair of side edges and the top edge and tapering rearwardly and downwardly therefrom to terminate in a pair of opposed, generally parallel body edges; and a coating means transparency of said transparent wall; and said coating means comprises a major proportion of a binding agent; a minor proportion of an emulsifying agent; and a minor proportion of an agent which causes the coating means to become more flexible.
Claim 14
Dependent Claim
55 words
The device of claim 10 wherein said coating means comprises from about 50% to about 99% by weight of the binding agent, from about 0.5% to about 30% by weight of the emulsifying agent; and from about 0.5% to about 30% by weight of said agent which causes the coating composition to become more flexible.
Claim 15
Dependent Claim
52 words
The device of claim 11 wherein said binding agent comprises a first polyvinylpyrrolidone polymer having an average molecular weight of about 40,000 and a second polyvinylpyrrolidone polymer having an average molecular weight of about 360,000, wherein said first and said second polyvinylpyrrolidone polymer are combined in a weight ratio of about 1:1.
Claim 16
Independent Claim
21 words
The device of 10 wherein said coating means has an average thickness of from about 1 micron to about 75 microns.
Claim 17
Independent Claim
21 words
The device of 10 wherein said coating means has an average thickness of from about 1 micron to about 75 microns.
Claim 18
Dependent Claim
38 words
The device of claim 10 wherein said transparent wall comprises at least one opening; and at least one air permeable sheet means, secured to said wall and covering said opening, for preventing fluids from passing through said opening.
Claim 19
Dependent Claim
19 words
The device of claim 14 wherein said air permeable sheet means for preventing fluids from passing comprises spunbonded olefin.
Claim 20
Dependent Claim
31 words
The device of claim 15 wherein said spunbonded olefin has a Frazier porosity in ft. 3 /ft. 2 /min. selected from the group consisting of 45, 40 and less than 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |