Multi-parameter sensor apparatus

• US 5,596,988 A
• Filed: 12/07/1994
• Issued: 01/28/1997
• Est. Priority Date: 06/30/1993
• Status: Expired due to Term

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Biomedical Sensors Limited (Allegro Biodiesel Corp.)
• Inventors: Markle, David R., Hendry, Stuart P., Irvine, Michael P., Crane, Barry C., Paterson, William
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): YARNELL, BRYAN KEITH
• Application Number:
  US08/352,340
• Time in Patent Office: 783 Days
• Field of Search: 128/635-637, 128/639, 128/642, 128/632, 128/634, 204/403, 204/414, 204/415, 204/416
• US Class Current: 600/353
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: A61B 5/14542 for measuring blood gases A61B5/14551 takes precedence
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: B01D 69/10 Supported membranes; Membrane supports
• CPC Class Codes: B01D 69/141 Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes

Abstract

A multi-parameter catheter comprising sensors enveloped in a sheath made from a biphasic material comprising a layer of microporous hydrophobic substance having micropores which are filled with a hydrophilic substance which when hydrated forms a gel and allows the passage of water-bound ions, and an apparatus for introducing the catheter into a patient'"'"'s blood vessel.

Claims