Patent US5520667A successfully refreshed from Google Patents.
US5520667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for bone and other tissue preparation
Assignee: Innovative Surgical Devices Corp
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Filing: 1994-06-29
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Granted: 1996-05-28
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Expires: 2014-06-29
Abstract
Abstract Methods are provided for surgical lavage including pumping liquid to bone and other tissue surfaces with a reciprocating pump mechanism operated by pressurized gas wherein pressurized exhaust gas is further utilized to accelerate the pulsed liquid. A first valve arrangement is provided to bypass the pumping mechanism to direct pressurized gas directly onto the tissue surface without the presence of liquid from the device. A second valve arrangement is provided for optionally venting at least a portion of the exhaust gas to the atmosphere instead of directing it to the tissue surface. An additive line delivers additive to the gas bypass line for delivery of the additive to the tissue surface with the flowing gas stream.
Inventors
- 👤 Karen M. Roche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:56
CPC Classifications
A; A61; A61M; A61M3/00; A61M3/02; A61M3/0233; A61M3/0254; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4675; A61F2002/4676; A61M13/00; A61M13/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
A method of preparing bone and other tissue comprising the steps of: a) supplying pressurized gas to a pump device having a gas-driven pump mechanism for pumping liquid and a nozzle interconnected to the pump mechanism; b) supplying liquid to be pumped to the pump device; c) reciprocally driving the pump mechanism of the pump device with the gas to pump the liquid to the nozzle of the pump device; d) directing exhaust gas from the pumping mechanism to the nozzle; and e) directing the nozzle at a tissue surface, wherein the liquid and the exhaust gas exit the nozzle.
Claim 2
Independent Claim
100 words
A method of preparing bone and other tissue comprising the steps of: a) supplying pressurized gas to a pump device having a gas-driven pump mechanism for pumping liquid and a nozzle interconnected to the pump mechanism; b) supplying liquid to be pumped to the pump device; c) reciprocally driving the pump mechanism of the pump device with the gas to pump the liquid to the nozzle of the pump device; d) directing exhaust gas from the pumping mechanism to the nozzle; and e) directing the nozzle at a tissue surface, wherein the liquid and the exhaust gas exit the nozzle.
Claim 3
Dependent Claim
44 words
The method of claim 1, after step e), further comprising the steps of: a) bypassing the pump mechanism with the gas; b) directing the gas to the nozzle; and c) directing the nozzle at the tissue surface, wherein only the gas exits the nozzle.
Claim 4
Dependent Claim
29 words
The method of claim 2, further comprising the step of adding an additive to the gas bypassing the pump mechanism wherein the gas and the additive exit the nozzle.
Claim 5
Dependent Claim
46 words
The method of claim 1, after step e), further comprising the steps of: a) directing the exhaust gas from the pump mechanism away from the nozzle and into the atmosphere; and b) directing the nozzle at the tissue surface, wherein only the liquid exits the nozzle.
Claim 6
Dependent Claim
47 words
The method of claim 4, after step b) of claim 4, further comprising the steps of: a) bypassing the pump mechanism with the gas; b) directing the gas to the nozzle; and c) directing the nozzle at the tissue surface, wherein only the gas exits the nozzle.
Claim 7
Dependent Claim
55 words
The method of claim 1, after step e), further comprising the steps of: a) directing a portion of the exhaust gas from the pump mechanism away from the nozzle and into the atmosphere; and b) directing the nozzle at the tissue surface, wherein the liquid and the remaining portion of the gas exit the nozzle.
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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) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |