US4642093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspirator for withdrawal of secretions from wounds
Assignee: Individual
•
Filing: 1985-02-07
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Granted: 1987-02-10
•
Expires: 2005-02-07
Abstract
Abstract An aspirator for withdrawal of secretions from wounds has an evacuated vessel wherein the subatmospheric pressure prior to admission of secretions into its interior is maintained at a level of between about 0.8 and 1 bar. The vessel carries indicia denoting (e.g., in percent or in milliliters) the known-in-advance maximum quantity if secretions which can be sucked into the vessel by way of a cannula as well as lesser quantities which accumulate in the vessel while the pressure rises above the predetermined level as a result of admission of secretions.
Inventors
- 👤 Anton Harle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:38
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/64; A61M1/66; A61M1/90; A61M1/98
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
60 words
An aspirator for withdrawal of secretions from wounds, comprising an evacuated vessel having a normally sealed inlet for admission of secretions into its interior; and means for indicating the maximum quantity of secretions which can enter the vessel by suction when the subatmospheric pressure in the interior of the vessel prior to admission of secretions thereinto matches a predetermined value.
Claim 2
Dependent Claim
60 words
An aspirator for withdrawal of secretions from wounds, comprising an evacuated vessel having a normally sealed inlet for admission of secretions into its interior; and means for indicating the maximum quantity of secretions which can enter the vessel by suction when the subatmospheric pressure in the interior of the vessel prior to admission of secretions thereinto matches a predetermined value.
Claim 3
Dependent Claim
18 words
The aspirator of claim 1, further comprising means for indicating the pressure in the interior of said vessel.
Claim 4
Dependent Claim
22 words
The aspirator of claim 1, wherein said indicating means comprises indicia fixedly applied to and observable from the exterior of said vessel.
Claim 5
Dependent Claim
30 words
The aspirator of claim 3, wherein at least a portion of said vessel transmits light so that the quantity of secretions in its interior can be observed from the outside.
Claim 6
Dependent Claim
51 words
The aspirator of claim 1, wherein said indicating means includes indicia applied to said vessel and denoting said maximum quantity as well as lesser quantities during various stages of filling of the vessel as the pressure therein rises above said predetermined value in response to admission of secretions into its interior.
Claim 7
Dependent Claim
14 words
The aspirator of claim 5, wherein said indicia denote quantities of secretions in percent.
Claim 8
Dependent Claim
14 words
The aspirator of claim 5, wherein said indicia denote quantities of secretions in milliliters.
Claim 9
Dependent Claim
12 words
The aspirator of claim 1, wherein said indicating means includes colored indicia.
Claim 10
Dependent Claim
17 words
The aspirator of claim 1, wherein said indicating means comprises indicia in a plurality of different colors.
Claim 11
Dependent Claim
21 words
The aspirator of claim 1, wherein said vessel includes a wall and said indicating means comprises indicia provided in said wall.
Claim 12
Dependent Claim
22 words
The aspirator of claim 1, wherein said indicating means comprises a carrier separate from said vessel and indicia provided on said carrier.
Claim 13
Dependent Claim
38 words
The aspirator of claim 11, wherein said carrier includes a sheet and said indicia denote said maximum quantity in percent of the overall capacity of said vessel and as a function of said predetermined value of subatmospheric pressure.
Claim 14
Dependent Claim
92 words
An aspirator for withdrawal of secretions from wounds, comprising an evacuated vessel having a normally sealed inlet for admission of secretions into its interior; and means for indicating that quantity of secretions (a) which can enter the vessel by suction when the subatmospheric pressure in the interior of the vessel prior to admission of secretions thereinto matches a predetermined value, and (b) whose retrograde flow toward the wound is impossible as long as the vessel is not lifted to a level exceeding the level of the wound by more than one meter.
Claim 15
Dependent Claim
92 words
An aspirator for withdrawal of secretions from wounds, comprising an evacuated vessel having a normally sealed inlet for admission of secretions into its interior; and means for indicating that quantity of secretions (a) which can enter the vessel by suction when the subatmospheric pressure in the interior of the vessel prior to admission of secretions thereinto matches a predetermined value, and (b) whose retrograde flow toward the wound is impossible as long as the vessel is not lifted to a level exceeding the level of the wound by more than one meter.
Claim 16
Dependent Claim
18 words
The aspirator of claim 13, further comprising means for indicating the pressure in the interior of the vessel.
Claim 17
Dependent Claim
22 words
The aspirator of claim 13, wherein said indicating means comprises indicia fixedly applied to and observable from the exterior of said vessel.
Claim 18
Dependent Claim
30 words
The aspirator of claim 15, wherein at least a portion of said vessel transmits light so that the quantity of secretions in its interior can be observed from the outside.
Claim 19
Dependent Claim
22 words
The aspirator of claim 13, wherein said indicating means comprises a carrier separate from said vessel and indicia provided on said carrier.
Claim 20
Dependent Claim
37 words
The aspirator of claim 17, wherein said carrier comprises a sheet and said indicia denote said quantity in percent of the overall capacity of said vessel and as a function of said predetermined value of subatmospheric pressure.
Claim 21
Dependent Claim
55 words
The aspirator of claim 13, wherein said indicating means includes indicia applied to said vessel and denoting said quantity as well as other quantities of secretions in the vessel during various stages of filling of the vessel as the pressure therein rises above said predetermined value in response to admission of secretions into its interior.
Claim 22
Dependent Claim
14 words
The aspirator of claim 19, wherein said indicia denote quantities of secretions in percent.
Claim 23
Dependent Claim
14 words
The aspirator of claim 19, wherein said indicia denote quantities of secretions in milliliters.
Claim 24
Dependent Claim
12 words
The aspirator of claim 13, wherein said indicating means includes colored indicia.
Claim 25
Dependent Claim
17 words
The aspirator of claim 13, wherein said indicating means comprises indicia in a plurality of different colors.
Claim 26
Dependent Claim
76 words
An aspirator for withdrawal of secretions from wounds, comprising an evacuated vessel having a normally sealed inlet for admission of secretions into its interior; and means for furnishing information pertaining to the subatmospheric pressure in the interior of said vessel, including means for indicating the maximum quantity of secretions which can enter the vessel by suction when the subatmospheric pressure in the interior of the vessel prior to admission of secretions thereinto matches a predetermined value.
Claim 27
Dependent Claim
76 words
An aspirator for withdrawal of secretions from wounds, comprising an evacuated vessel having a normally sealed inlet for admission of secretions into its interior; and means for furnishing information pertaining to the subatmospheric pressure in the interior of said vessel, including means for indicating the maximum quantity of secretions which can enter the vessel by suction when the subatmospheric pressure in the interior of the vessel prior to admission of secretions thereinto matches a predetermined value.
Claim 28
Dependent Claim
20 words
The aspirator of claim 24, wherein said indicating means includes indicia one of which denotes said maximum quantity in percent.
Claim 29
Dependent Claim
20 words
The aspirator of claim 24, wherein said indicating means includes indicia one of which denotes said maximum quantity in milliliters.
Claim 30
Dependent Claim
12 words
The aspirator of claim 24, wherein said indicating means comprises colored indicia.
Claim 31
Dependent Claim
17 words
The aspirator of claim 24, wherein said indicating means comprises indicia in a plurality of different colors.
Claim 32
Dependent Claim
21 words
The aspirator of claim 24, wherein said vessel includes a wall and said indicating means comprises indicia applied to said wall.
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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) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |