US4608041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for treatment of wounds in body tissue of patients by exposure to jets of gas
Assignee: Individual
•
Filing: 1982-10-11
•
Granted: 1986-08-26
•
Expires: 2002-10-11
Abstract
Abstract Device for treatment of wounds in body tissue of patients by means of jets of gas. A nozzle unit is designed to be placed over the area of the wound in order to cover it and is provided with inlets (6,10) for admission of oxygen gas to the area of the wound and outlets (9) for discharge of oxygen gas from the area of the wound. The inlets are designed to be connected by a hose (7) to a source of pressure containing air or oxygen gas. The nozzle unit is made of at least two layers of plastic foil (1,2) which are joined along the major part of their edges (3) enclosing an inner space, maintained mainly by the gas pressure, into which space the inlet (6) directs the flow. The nozzle unit is provided with a plurality of inlet openings (10) giving admission from the inner space (11) which openings are disposed in the layer of plastic foil (2) which is nearest to the area of the wound when the device is in use. These are designed to direct a plurality of gas jets at the area of the wound. A plurality of outlet openings (9) are so disposed in both layers of plastic foil (1,2) that gas from the area of the wound is made to escape out of the nozzle unit without passing through the inner space (11) on its way from the area of the wound.
Inventors
- 👤 Frese Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:20
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/05; A61M; A61M35/00; A61M35/30; A61F13/15; A61F13/53; A61F13/539; A61F2013/00089; A61F2013/0017; A61F2013/00174; A61F2013/00246; A61F2013/00251; A61F2013/00361; A61F2013/00795; A61F2013/00825; A61F2013/00855; A61F2013/00859; A61F2013/5395; A61F2013/53966
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
284 words
A device for treating a wound in body tissue of a patient, comprising: a nozzle unit to be placed over the wound so as to cover the wound and to separate the wound from surrounding space, an inlet for gas under pressure to the unit, said unit including a first and second layer of plastic foil, both having first surfaces where the layers are sealingly joined to each other including surfaces extending along a major part of the circumference of the unit, said first and second layers defining an inner space, said inlet communicating with said inner space so as to be sustained at least partly by gas pressure separating the first and second layers from each other at second surfaces, said first layer having a plurality of inlet openings leading from said inner space to the wound, said inlet openings being positioned in said second surfaces of said first layer, there being two rows of inlet openings with each row being displaced relative to a centerline between the two rows so that when the nozzle unit adjacent to each inlet opening assumes a curved configuration each inlet opening will be slanted with respect to the wound and a jet of gas exiting from each inlet opening will be directed obliquely at the wound, said first and second layers having a plurality of outlet openings positioned in at least part of said first surfaces, said outlet openings leading from the area of the wound directly to the surrounding space, so that the inlet openings may direct a plurality of gas jets from the inner space to the wound, and the outlet openings may let out gas directly to the surrounding space from the wound.
Claim 2
Independent Claim
284 words
A device for treating a wound in body tissue of a patient, comprising: a nozzle unit to be placed over the wound so as to cover the wound and to separate the wound from surrounding space, an inlet for gas under pressure to the unit, said unit including a first and second layer of plastic foil, both having first surfaces where the layers are sealingly joined to each other including surfaces extending along a major part of the circumference of the unit, said first and second layers defining an inner space, said inlet communicating with said inner space so as to be sustained at least partly by gas pressure separating the first and second layers from each other at second surfaces, said first layer having a plurality of inlet openings leading from said inner space to the wound, said inlet openings being positioned in said second surfaces of said first layer, there being two rows of inlet openings with each row being displaced relative to a centerline between the two rows so that when the nozzle unit adjacent to each inlet opening assumes a curved configuration each inlet opening will be slanted with respect to the wound and a jet of gas exiting from each inlet opening will be directed obliquely at the wound, said first and second layers having a plurality of outlet openings positioned in at least part of said first surfaces, said outlet openings leading from the area of the wound directly to the surrounding space, so that the inlet openings may direct a plurality of gas jets from the inner space to the wound, and the outlet openings may let out gas directly to the surrounding space from the wound.
Claim 3
Dependent Claim
35 words
A device according to claim 1, wherein the inlet openings are disposed in a number of first spaced rows, and the outlet openings are disposed in a number of second rows alongside the first rows.
Claim 4
Dependent Claim
30 words
A device according to claim 2, wherein the rows of outlet openings are disposed in oblong sections, one section for each row, in said first surfaces of the two layers.
Claim 5
Dependent Claim
32 words
A device according to claim 1, wherein the inlet openings and the outlet openings are so dimensioned that excess pressure is created in a space between the nozzle unit and the wound.
Claim 6
Dependent Claim
51 words
A device according to claim 4, wherein said sections extend parallel to each other and have ends finishing at some distance from the circumference of the nozzle unit in such a manner that said inner space becomes a connected whole and when under gas pressure, forms cushion-like parts with domed surfaces.
References Cited (Backward Citations)
FR789692A
Cited
US2998817A
Cited
US3089492A
Cited
US3467081A
Cited
US3610238A
Cited
US3920006A
Cited
US4182329A
Cited
US4224941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |