Flow path switching device
US-2020271232-A1 · Aug 27, 2020 · US
Rotary valves for dialysis systems
US11085552B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11085552-B2 |
| Application number | US-201916519106-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 23, 2019 |
| Priority date | Jul 31, 2018 |
| Publication date | Aug 10, 2021 |
| Grant date | Aug 10, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
In one aspect, a dialysis fluid cassette includes an inlet fluid line, multiple outlet fluid lines, and a valve including an actuation feature by which the valve can be rotated to fluidly communicate the inlet fluid line with a selected fluid line of the multiple outlet fluid lines.
First claim
Opening claim text (preview).
What is claimed is: 1. A dialysis fluid cassette, comprising: an inlet fluid line; a plurality of outlet fluid lines; and a valve comprising: an actuation feature by which the valve can be rotated to fluidly communicate the inlet fluid line with a selected fluid line of the plurality of outlet fluid lines, a valve body defining an internal fluid pathway that can fluidly communicate the inlet fluid line with the selected fluid line, and a spring that is configured to move the valve body to enable or disable an operation of the valve. 2. The dialysis fluid cassette of claim 1 , wherein the actuation feature comprises a surface profile that is formed to be engaged by an actuator for rotating the valve. 3. The dialysis fluid cassette of claim 1 , wherein the actuation feature has a polygonal shape. 4. The dialysis fluid cassette of claim 1 , wherein the actuation feature has a symmetric shape. 5. The dialysis fluid cassette of claim 1 , wherein the actuation feature has an asymmetric shape. 6. The dialysis fluid cassette of claim 1 , wherein the actuation feature comprises a recessed profile. 7. The dialysis fluid cassette of claim 1 , wherein the valve body is movable to: a first position at which the internal fluid pathway is aligned with the inlet fluid line and the plurality of outlet fluid lines to enable the operation of the valve, and a second position at which the internal fluid pathway is offset from the inlet fluid line and the plurality of outlet fluid lines to disable the operation of the valve. 8. A dialysis system, comprising: a dialysis fluid cassette, comprising: an inlet fluid line; a plurality of outlet fluid lines; and a valve comprising: an actuation feature by which the valve can be rotated to fluidly communicate the inlet fluid line with a selected fluid line of the plurality of outlet fluid lines, a valve body defining an internal fluid pathway that can fluidly communicate the inlet fluid line with the selected fluid line, and a spring that is configured to move the valve body to enable or disable an operation of the valve.
Assignees
Inventors
Classifications
Details of valves · CPC title
at least one cassette surface or portion thereof being flexible, e.g. the cassette having a rigid base portion with preformed channels and being covered with a foil · CPC title
with treatment-fluid pumping means or components thereof · CPC title
with sensing means or components thereof · CPC title
the interface providing means for actuating on functional elements of the cassette, e.g. plungers · CPC title
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Frequently asked questions
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- What does patent US11085552B2 cover?
- In one aspect, a dialysis fluid cassette includes an inlet fluid line, multiple outlet fluid lines, and a valve including an actuation feature by which the valve can be rotated to fluidly communicate the inlet fluid line with a selected fluid line of the multiple outlet fluid lines.
- Who is the assignee on this patent?
- Fresenius Medical Care Holdings Inc
- What technology area does this patent fall under?
- Primary CPC classification A61M1/14. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Aug 10 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).