Patent US4282867A successfully refreshed from Google Patents.
US4282867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning fluid injection device
Assignee: Individual
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Filing: 1979-12-05
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Granted: 1981-08-11
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Expires: 1999-12-05
Abstract
Abstract A portable medical treatment device is provided which includes an injection nozzle shaped and dimensioned to enter a human body cavity. At least one pump is provided having a suction connection connectable to a cleaning fluid reservoir and having a delivery connection connected via a delivery conduit to the nozzle. By means of drive means the pump is driven during use in order to pump cleaning fluid under pressure from the reservoir to the nozzle.
Inventors
- 👤 Rudolph M. Du Toit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
A; A61; A61M; A61M3/00; A61M3/02; A61M3/0233; A61M3/0254; A61M3/0258; A61M2210/00; A61M2210/06; A61M2210/0662; A61M3/0202
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A portable medical treatment device for irrigating the human ear canal comprising: (a) a cylindrical tube having a cleansing fluid passage and being dimensioned to enter an aural passage of a human body; (b) an injection nozzle provided at one end of the tube and constituting an outlet from the fluid passage; (c) at least two pumps connected in parallel, each having a suction side connection to a cleansing fluid reservoir and a delivery side for connection to the passage; (d) at least a pair of electrical motors adapted to each drive a respective one of the pumps for pumping cleansing fluid under pressure from the reservoir to the nozzle via the cleansing fluid passage; and (e) electrical control means adapted to sequentially energize one or both of the motors to vary the cleansing fluid output from the injection nozzle.
Claim 2
Dependent Claim
140 words
A portable medical treatment device for irrigating the human ear canal comprising: (a) a cylindrical tube having a cleansing fluid passage and being dimensioned to enter an aural passage of a human body; (b) an injection nozzle provided at one end of the tube and constituting an outlet from the fluid passage; (c) at least two pumps connected in parallel, each having a suction side connection to a cleansing fluid reservoir and a delivery side for connection to the passage; (d) at least a pair of electrical motors adapted to each drive a respective one of the pumps for pumping cleansing fluid under pressure from the reservoir to the nozzle via the cleansing fluid passage; and (e) electrical control means adapted to sequentially energize one or both of the motors to vary the cleansing fluid output from the injection nozzle.
Claim 3
Dependent Claim
31 words
A device as claimed in claim 1, in which the pumps are in the form of positive displacement pumps, and in which the electrical motors are drivingly connected to the pumps.
Claim 4
Dependent Claim
50 words
A device as claimed in claim 1, including a housing of generally pistol-shaped appearance with a handle shaped like a pistol grip, the handle including a push button type electrical switch, the pump being provided above the switch and the cylindrical tube forming a barrel portion of the pistol-shaped housing.
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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |