Patents
US 12485215 B2: Systems and methods for inducing plug flow during fluid separation using air
- Granted
- 2025-12-02
- Filed
- 2023-02-27 application 18174926
- Type
- Utility · 26 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A fluid separation system and method includes a durable hardware component including a pump station with plurality of pumps, a centrifuge mounting station and drive unit, a plurality of valves and clamps, and a controller. The system includes a single use fluid flow circuit having a separation chamber configured to be received by the centrifuge and the fluid flow circuit is engageable with the durable hardware component to control fluid flow within the fluid flow circuit. The fluid flow circuit having an air access component configured to selectively receive air and to provide the air into a conduit to induce plug flow between the separated fluid component and another separated fluid component, wherein the controller is configured to operate the system to perform one or more blood processing procedures to convey a fluid into the separation chamber and to remove a separated fluid component from the separation chamber.
Source: PVGPATDIS, file of 2026-04-10 (ipg251202.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Fenwal, Inc. 423 patents | US company or organization | Lake Zurich, IL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Benjamin E. Kusters | Pleasant Prairie, WI | 65 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61M | Devices for introducing media into, or onto, the body ; devices for transducing body media or for taking media from the body ; devices for producing or ending sleep or stupor | A61M1/0209 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D21/262 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-06-26 | Assignment Assignment of assignor's interest | KUSTERS, BENJAMIN E. signed 2023-04-19 | FENWAL, INC. LAKE ZURICH, IL | 64055/450 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.