Patent US3920030A successfully refreshed from Google Patents.
US3920030A
Expired / Lapsed
US
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Device for cleaning and sterilizing artificial kidneys
Assignee: Ma De Inc
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Filing: 1974-10-18
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Granted: 1975-11-18
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Expires: 1994-10-18
Abstract
Abstract A device for cleaning and sterilizing artificial kidneys. Pump means and at least some of the valve means are constructed for external actuation, so that the fluids they propel or control do not contact parts which are subject to corrosion, and so that leakage at joints is minimized. In a preferred embodiment, the pump means and at least some of the valve means are separable, parts of them being carried by an adapter which is attachable to base structure. Then the risk of cross-contamination of artificial kidneys of a plurality of persons through the base structure is eliminated.
Inventors
- 👤 Barry D Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:02
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/16; A61L2/18; A61M; A61M1/00; A61M1/14; A61M1/16; A61M1/168; A61M1/1682; A61M1/169; B; B01; B01D; B01D65/00; B01D65/02; B01D65/022; F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1292; B01D2321/00; B01D2321/16; B01D2321/167; B01D2321/20; B01D2321/2066
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
170 words
A device for treating artificial kidneys of the type which have a blood chamber with an inlet and an outlet, said device supplying liquid to flush, to clean, and to sterilize the blood chamber, and comprising: a base structure; an externally actuable blood chamber drain valve which includes flow conduitry and actuable valve means; externally actuable cleaning solution pump means and externally actuable sterilizing solution pump means, each including plenum means and actuating means; water conduit means; a manifold receiving water and also receiving cleaning solution and sterilizing when the respective pump is operated, said manifold discharging to an outlet for connection to the blood chamber inlet of an artificial kidney; conduit means for draining the outlet port of the blood chamber discharging to the blood chamber outlet valve; selectively actuable inlet valve means for controlling the supply of water, cleaning solution and sterilizing solution to the manifold; and control means effective selectively to operate said valve means and pump means so as to clean and sterilize an artificial kidney.
Claim 2
Independent Claim
170 words
A device for treating artificial kidneys of the type which have a blood chamber with an inlet and an outlet, said device supplying liquid to flush, to clean, and to sterilize the blood chamber, and comprising: a base structure; an externally actuable blood chamber drain valve which includes flow conduitry and actuable valve means; externally actuable cleaning solution pump means and externally actuable sterilizing solution pump means, each including plenum means and actuating means; water conduit means; a manifold receiving water and also receiving cleaning solution and sterilizing when the respective pump is operated, said manifold discharging to an outlet for connection to the blood chamber inlet of an artificial kidney; conduit means for draining the outlet port of the blood chamber discharging to the blood chamber outlet valve; selectively actuable inlet valve means for controlling the supply of water, cleaning solution and sterilizing solution to the manifold; and control means effective selectively to operate said valve means and pump means so as to clean and sterilize an artificial kidney.
Claim 3
Dependent Claim
15 words
A device according to claim 1 in which the pump means is a pulse type.
Claim 4
Dependent Claim
24 words
A device according to claim 1 in which the pump plenum means is compressible, and in which the actuating means comprises said plenum means.
Claim 5
Dependent Claim
38 words
A device according to claim 1 in which an upstream and a downstream check valve are placed at opposite ends of the plenum means, and in which the actuating means compresses the plenum means between the check valves.
Claim 6
Dependent Claim
59 words
A device according to claim 1 in which the actuating means comprises a rotary impeller and an arcuate pinch surface on the side of the plenum means opposite from the rotary impeller, the impeller pinching the plenum means closed at spaced-apart points along its length, rotation of the impeller moving the points so as to discharage slugs of fluid.
Claim 7
Dependent Claim
56 words
A device according to claim 1 in which the blood chamber valve means and a dialysate chamber valve means ends comprises a respective flexible conduit and a respective pinch block, a respective plunger, and respective means to move the plunger toward and away from the pinch block to close and to open the conduit to flow.
Claim 8
Dependent Claim
14 words
A device according to claim 6 in which said last-named means comprises a solenoid.
Claim 9
Dependent Claim
19 words
A device according to claim 1 in which the pump means and the blood chamber drain valve are separable.
Claim 10
Dependent Claim
39 words
A device according to claim 1 in which portions of the pump means and blood chamber drain valve are carried by an adapter, and the remainder by the base structure, the adapter being removably mountable to the base structure.
Claim 11
Independent Claim
261 words
A device for treating artificial kidneys of the type which have a blood chamber with an inlet and outlet, a dialysate chamber with an inlet and an outlet, and a membrane between the chambers, said device supplying liquid to flush, to clean, and to sterilize the blood chamber, and to flush the dialysate chamber, and comprising: a base structure; An adapter flow section; a separable blood chamber drain valve and a separable dialysate chamber inlet valve, which include flow conduitry carried by the adapter flow section and actuable valve means carried by the base structure; separable cleaning solution pump means and separable sterilizing solution pump means including plenum means carried by the adapter flow section and actuating means carried by the base structure, said separable valve means and separable pump means being assembled for use by attaching the adapter flow section to the base structure; water conduit means carried by the adapter flow section; a manifold carried by the adapter flow section receiving water and also receiving cleaning solution and sterilizing solution when the respective pump is operated, said manifold discharging to an outlet for connection to the blood chamber inlet of an artificial kidney, and to the dialysate chamber inlet valve; conduit means for draining the outlet port of the blood chamber discharging to the blood chamber outlet valve; selectively actuable inlet valve means for controlling the supply of water, cleaning solution and sterilizing solution to the manifold; and control means effective selectively to operate said valve means and pump means so as to clean and sterilize an artificial kidney.
Claim 12
Independent Claim
261 words
A device for treating artificial kidneys of the type which have a blood chamber with an inlet and outlet, a dialysate chamber with an inlet and an outlet, and a membrane between the chambers, said device supplying liquid to flush, to clean, and to sterilize the blood chamber, and to flush the dialysate chamber, and comprising: a base structure; An adapter flow section; a separable blood chamber drain valve and a separable dialysate chamber inlet valve, which include flow conduitry carried by the adapter flow section and actuable valve means carried by the base structure; separable cleaning solution pump means and separable sterilizing solution pump means including plenum means carried by the adapter flow section and actuating means carried by the base structure, said separable valve means and separable pump means being assembled for use by attaching the adapter flow section to the base structure; water conduit means carried by the adapter flow section; a manifold carried by the adapter flow section receiving water and also receiving cleaning solution and sterilizing solution when the respective pump is operated, said manifold discharging to an outlet for connection to the blood chamber inlet of an artificial kidney, and to the dialysate chamber inlet valve; conduit means for draining the outlet port of the blood chamber discharging to the blood chamber outlet valve; selectively actuable inlet valve means for controlling the supply of water, cleaning solution and sterilizing solution to the manifold; and control means effective selectively to operate said valve means and pump means so as to clean and sterilize an artificial kidney.
Claim 13
Dependent Claim
15 words
A device according to claim 10 in which the pump means is a pulse type.
Claim 14
Dependent Claim
24 words
A device according to claim 10 in which the pump plenum means is compressible, and in which the actuating means comprises said plenum means.
Claim 15
Dependent Claim
38 words
A device according to claim 10 in which an upstream and a downstream check valve are placed at opposite ends of the plenum means, and in which the actuating means compresses the plenum means between the check valves.
Claim 16
Dependent Claim
65 words
A device according to claim 10 in which the actuating means comprises a rotary impeller, and in which an arcuate pinch surface is carried by the adapter on the side of the plenum means opposite from the rotary impeller, the impeller pinching the plenum means closed at spaced-apart points along its length, rotation of the impeller moving the points as to discharge slugs of fluid.
Claim 17
Dependent Claim
66 words
A device according to claim 10 in which the blood chamber valve means and the dialysate chamber valve means each comprises respective flexible conduit and a respective pinch block carried by the adapter flow section, a respective plunger carried by the base structure, and respective means to move the plunger toward and away from the pinch block to close and to open the conduit to flow.
Claim 18
Dependent Claim
14 words
A device according to claim 15 in which said last-named means comprises a solenoid.
Claim 19
Dependent Claim
32 words
A device according to claim 10 in which the inlet valves are separable, parts of said valves being carried by the base structure, and their other parts by a body removable therefrom.
Claim 20
Dependent Claim
15 words
A device according to claim 17 in which the pump means is a pulse type.
Claim 21
Dependent Claim
24 words
A device according to claim 17 in which the pump plenum means is compressible, and in which the actuating means comprises said plenum means.
Claim 22
Dependent Claim
38 words
A device according to claim 17 in which an upstream and a downstream check valve are placed at opposite ends of the plenum means, and in which the actuating means comprises the plenum means between the check valves.
Claim 23
Dependent Claim
66 words
A device according to claim 17 in which the actuating means comprises a rotary impeller, and in which an arcuate pinch surface is carried by the adapter on the side of the plenum means opposite from the rotary impeller, the impeller pinching the plenum means closed at spaced-apart points along its length, rotation of the impeller moving the points so as to discharge slugs of fluid.
Claim 24
Dependent Claim
67 words
A device according to claim 17 in which the blood chamber valve means and the dialysate chamber valve means each comprises a respective flexible conduit and a respective pinch block carried by the adapter flow section, a respective plunger carried by the base structure, and respective means to move the plunger toward and away from the pinch block to close and to open the condUit to flow.
Claim 25
Dependent Claim
22 words
A device according to claim 17 in which the parts carried by the base structure includes means to actuate the respective valves.
Claim 26
Dependent Claim
39 words
A device according to claim 17 in which the adapter includes a connector section removably attachable both to the base structure and to the adapter flow section, the said inlet valve means being carried by the said connector section.
Claim 27
Dependent Claim
22 words
A device according to claim 24 in which the parts carried by the base structure includes means to actuate the respective valves.
Claim 28
Dependent Claim
33 words
A device according to claim 10 in which said control means comprises a control having a plurality of sequential settings, and timer means determining the length of time the control maintains each setting.
Claim 29
Independent Claim
195 words
A device for treating artificial kidneys of the type which have a blood chamber with an inlet and an outlet, said device supplying liquid to flush, to clean, and to sterilize the blood chamber, and comprising: a base structure, a separable blood chamber drain valve which includes flow conduitry and actuable valve means; separable cleaning solution pump means and separable sterilizing solution pump means, each including plenum means and actuating means; water conduit means; a manifold receiving water and also receiving cleaning solution and sterilizing solution when the respective pump is operated, said manifold discharging to an outlet for connection to the blood chamber inlet of an artificial kidney; conduit means for draining the outlet port of the blood chamber discharging to the blood chamber outlet valve; selectively actuable and separable inlet valve means for controlling the supply of water, cleaning solution, and sterilizing solution to the manifold; and control means effective selectively to operate said valve means and pump means so as to clean and sterilize an artificial kidney; and an adapter carrying parts of at least the blood chamber drain valve and the pump means, the remainder being mounted to the base structure.
Claim 30
Independent Claim
195 words
A device for treating artificial kidneys of the type which have a blood chamber with an inlet and an outlet, said device supplying liquid to flush, to clean, and to sterilize the blood chamber, and comprising: a base structure, a separable blood chamber drain valve which includes flow conduitry and actuable valve means; separable cleaning solution pump means and separable sterilizing solution pump means, each including plenum means and actuating means; water conduit means; a manifold receiving water and also receiving cleaning solution and sterilizing solution when the respective pump is operated, said manifold discharging to an outlet for connection to the blood chamber inlet of an artificial kidney; conduit means for draining the outlet port of the blood chamber discharging to the blood chamber outlet valve; selectively actuable and separable inlet valve means for controlling the supply of water, cleaning solution, and sterilizing solution to the manifold; and control means effective selectively to operate said valve means and pump means so as to clean and sterilize an artificial kidney; and an adapter carrying parts of at least the blood chamber drain valve and the pump means, the remainder being mounted to the base structure.
Claim 31
Dependent Claim
33 words
A device according to claim 27 in which a separable dialysate chamber inlet valve is provided, at least part of it being mounted to the adapter, and the remainder to the base structure.
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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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |