US4863422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swab applicator for generation of heated medicament
Assignee: Individual
•
Filing: 1988-06-15
•
Granted: 1989-09-05
•
Expires: 2008-06-15
Abstract
Abstract A double ended compressible tubular swab applicator comprising a length of tubular material containing a charge of a treating liquid in an innermost lumen and a heat generating material having microencapsulated water spheres embedded in an outermost lumen, for delivery of heated treating liquid upon compression of the microcapsules and rupturing of sealing members.
Inventors
- 👤 Sharon Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
A; A61; A61M; A61M35/00; A61M35/003; A61M35/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A double ended swab applicator adapted to provide heat to a confined charge of a treating liquid upon squeezing, comprising: a length of compressible tubular material having the ends embedded in a swab material and having an inner lumen and an outer lumen concentric therewith extending within said tubular member; said length of tubular material having an internal seal of inverted pyramidal structures subdividing the innermost and outermost lumen on one side and a hollow chamber at another side; wherein said innermost lumen contains a charge of treating liquid and said outermost lumen contains a heat generating material having rupturable microencapsulated water spheres embedded therein; and wherein said inverted pyramidal structures have base portions which are non-frangible to seal the outermost lumen and upper portions which are frangible to seal the innermost lumen.
Claim 2
Dependent Claim
133 words
A double ended swab applicator adapted to provide heat to a confined charge of a treating liquid upon squeezing, comprising: a length of compressible tubular material having the ends embedded in a swab material and having an inner lumen and an outer lumen concentric therewith extending within said tubular member; said length of tubular material having an internal seal of inverted pyramidal structures subdividing the innermost and outermost lumen on one side and a hollow chamber at another side; wherein said innermost lumen contains a charge of treating liquid and said outermost lumen contains a heat generating material having rupturable microencapsulated water spheres embedded therein; and wherein said inverted pyramidal structures have base portions which are non-frangible to seal the outermost lumen and upper portions which are frangible to seal the innermost lumen.
Claim 3
Dependent Claim
35 words
The double ended compressible tubular swab of claim 1, wherein said hollow chamber is end-stopped by a rupturable membrane element, and wherein said innermost and outermost lumens are end stopped by a permanent non-rupturable seal.
Claim 4
Dependent Claim
48 words
The double ended compressible tubular swab of claim 2, wherein the heat generating material is composed of: ______________________________________
Iron, 60 mesh 17 ounces
Manganese hydroxide 1 ounce
Graphite carbon 30 grains
Ferric chloride 30 grains
Ferrous sulfate 30 grains
Manganese chloride 30 grains
Manganese sulfate 30 grains
______________________________________
Claim 5
Dependent Claim
30 words
The double ended compressible tubular swab of claim 3, further containing about 30 grains of a moisture silica selected from the group consisting of kieselguhr, silica gel or sodium silicate.
Claim 6
Dependent Claim
16 words
The double ended compressible tubular swab of claim 4, wherein the microencapsulating material is vinylidene chloride.
Claim 7
Dependent Claim
43 words
The double ended compressible tubular swab of claim 2 wherein the heat generating material is composed by weight of: ______________________________________
Crushed cast iron
95 parts
Crushed carbon steel
5 parts
Epsom salt 0.5 parts
Sodium chloride 0.5 parts
Ammonium chloride
0.25 parts
______________________________________
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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |