SENSOR APPARATUS SYSTEMS, DEVICES AND METHODS

• US 20170241926A1
• Filed: 12/29/2016
• Published: 08/24/2017
• Est. Priority Date: 02/27/2007
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Kamen, Dean, Perry, N. Christopher, Demers, Jason A., Tracey, Brian D., Chawan, Arun D., Grant, Kevin L.
• Granted Patent: US 10,060,867 B2
• Time in Patent Office: Days
• CPC Class Codes: A61M 2205/121 interface between cassette and base
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/6027 Electric-conductive bridges closing detection circuits, with or without identifying elements, e.g. resistances, zener-diodes
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: F04B 2205/10 Inlet temperature
• CPC Class Codes: F04B 43/00 Machines, pumps, or pumping installations having flexible working members pumps or pumping installations specially adapted for elastic fluids F04B45/00
• CPC Class Codes: F04B 49/02 Stopping, starting, unloading or idling control
• CPC Class Codes: F04B 53/16 Casings; Cylinders; Cylinder liners or heads; Fluid connections
• CPC Class Codes: F04B 9/109 having plural pumping chambers
• CPC Class Codes: G01N 25/18 by investigating thermal conductivity by calorimetry G01N25/20; by measuring change of resistance of an electrically-heated body G01N27/18
• CPC Class Codes: Y10T 137/8376 Combined
• CPC Class Codes: Y10T 137/8593 Systems
• CPC Class Codes: Y10T 137/85978 With pump
• CPC Class Codes: Y10T 137/9682 Miscellaneous

Abstract

A sensor apparatus and sensor apparatus system for use in conjunction with a cassette, including a disposable or replaceable cassette. In some embodiments, the cassette includes a thermal well for permitting the sensing of various properties of a subject media. The thermal well includes a hollow housing of a thermally conductive material. In other embodiments, the cassette includes sensor leads for sensing of various properties of a subject media. The thermal well has an inner surface shaped so as to form a mating relationship with a sensing probe. The mating thermally couples the inner surface with a sensing probe. In some embodiments, the thermal well is located on a disposable portion and the sensing probe on a reusable portion.

Claims

1. A cassette comprising a fluid path including a sensor element for at least one of transmitting temperature and permitting conductivity sensing of fluid passing through the conduit, wherein the well is adapted for interconnection with a sensor.

2. A cassette according to claim 1, wherein the sensor element is a thermal well.

5. A cassette according to claim 1, wherein the sensor element is a thermal well.

3. A cassette comprising a fluid path including a thermal well, said thermal well comprising:

a hollow housing of a thermally conductive material, said housing having an outer surface and an inner surface, said inner surface of a predetermined shape so as to form a mating relationship with a sensing probe, whereby said mating thermally couples the inner surface with a sensing probe.

4. A method for determining temperature and conductivity of a subject media, said method comprising the steps of:

providing a cassette containing at least one sensor element;

thermally coupling a thermal well and a sensing probe such that temperature and conductivity can be determined;

transferring thermal and conductivity signals through at least 3 leads from said sensing probe; and

determining temperature and conductivity using said signals.

6-16. -16. (canceled)