US4838288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart valve and xenograft washing system
Assignee: Pioneering Tech Inc
•
Filing: 1988-03-14
•
Granted: 1989-06-13
•
Expires: 2008-03-14
Abstract
Abstract A packaged prosthesis and a system and method for washing prosthetic and other implants with a biologically compatible wash solution prior to implantation, which allows for complete washing of valve and graft tissue to remove preservatives used to store the tissue grafts and or treat the same, having containers containing the wash solution, a sterile filter in fluid communication with these containers, a valve to the sterile filter to control the flow of wash solution from the containers to the sterile filter and a wash chamber, in fluid communication with the sterile filter, for positioning the prosthesis or tissue implant to permit wash solution to flow freely over and wash the same are disclosed.
Inventors
- 👤 Diana R. Wright
- 👤 David W. Schlerf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:02
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/0095; A61F2/02; A61F2/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A system for washing a prosthesis with a biologically compatible wash solution, comprising, in combination, at least one container of wash solution; a sterile filter in fluid communication with said container; and a flow-through wash chamber having a fluid inlet and a fluid outlet for positioning the prosthesis to permit wash solution to flow freely over and wash the same, the fluid inlet being connected in fluid communication with sterile filter, said wash chamber comprising a funnel and a cap forming said wash chamber, said wash chamber being constructed, configured and dimensioned to receive a xenograft prosthesis and, in use, to direct fluid flow over all surfaces thereof, said cap being removeably connected to said funnel, and in fluid communication with said sterile filter.
Claim 2
Independent Claim
124 words
A system for washing a prosthesis with a biologically compatible wash solution, comprising, in combination, at least one container of wash solution; a sterile filter in fluid communication with said container; and a flow-through wash chamber having a fluid inlet and a fluid outlet for positioning the prosthesis to permit wash solution to flow freely over and wash the same, the fluid inlet being connected in fluid communication with sterile filter, said wash chamber comprising a funnel and a cap forming said wash chamber, said wash chamber being constructed, configured and dimensioned to receive a xenograft prosthesis and, in use, to direct fluid flow over all surfaces thereof, said cap being removeably connected to said funnel, and in fluid communication with said sterile filter.
Claim 3
Dependent Claim
36 words
The system of claim 1 further comprising flowthrough detecting means in fluid communication with the fluid outlet of the wash chamber for detecting the presence of biological or chemical species in effluent from the wash chamber.
Claim 4
Dependent Claim
28 words
The system of claim 2 further comprising a second sterile filter, in fluid communication with the outlet of said wash chamber, for filtering effluent from said wash chamber.
Claim 5
Dependent Claim
49 words
The system of claim 1 further comprising: a recirculation outlet conduit in fluid communication with the wash chamber, a recirculation inlet conduit in fluid communication with the wash chamber, and means for recirculating fluid through the wash chamber and said recirculation conduits to provide additional washing of the prosthesis.
Claim 6
Independent Claim
155 words
A system for washing a prosthesis with a biologically compatible wash solution, comprising, in combination, at least one container of wash solution; a sterile filter in fluid communication with said container; and a flow-through wash chamber having a fluid inlet and a fluid outlet for positioning the prosthesis to permit wash solution to flow freely over and wash the same, the fluid inlet being connected in fluid communication with sterile filter said wash chamber comprising a funnel and a cap forming said wash chamber, said wash chamber being constructed, configured and dimensioned to receive a heart valve prosthesis and, in use, to direct fluid flow over all surfaces thereof, said cap being removeably connected to said funnel, and in fluid communication with said sterile filter,; and a filter cloth in said funnel for covering said heart valve prosthesis positioned within said funnel for spreading fluid flow and causing flow over all surfaces of the prosthesis.
Claim 7
Independent Claim
155 words
A system for washing a prosthesis with a biologically compatible wash solution, comprising, in combination, at least one container of wash solution; a sterile filter in fluid communication with said container; and a flow-through wash chamber having a fluid inlet and a fluid outlet for positioning the prosthesis to permit wash solution to flow freely over and wash the same, the fluid inlet being connected in fluid communication with sterile filter said wash chamber comprising a funnel and a cap forming said wash chamber, said wash chamber being constructed, configured and dimensioned to receive a heart valve prosthesis and, in use, to direct fluid flow over all surfaces thereof, said cap being removeably connected to said funnel, and in fluid communication with said sterile filter,; and a filter cloth in said funnel for covering said heart valve prosthesis positioned within said funnel for spreading fluid flow and causing flow over all surfaces of the prosthesis.
Claim 8
Dependent Claim
49 words
The system of claim 5 further comprising: a recirculation outlet conduit in fluid communication with the wash chamber, a recirculation inlet conduit in fluid communication with the wash chamber, and means for recirculating fluid through the wash chamber and said recirculation conduits to provide additional washing of the prosthesis.
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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |