Temperature sensing system with retrograde sensor

• US 7,407,487 B2
• Filed: 03/14/2005
• Issued: 08/05/2008
• Est. Priority Date: 08/12/2002
• Status: Expired due to Fees

• Current Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Original Assignee: Radiant Medical, Inc. (Asahi Kasei Corporation)
• Inventors: Machold, Timothy R., Dae, Michael W., Stull, Paul M.
• Primary Examiner(s): Hindenburg; Max
• Assistant Examiner(s): Foreman; Jonathan M
• Application Number:
  US11/080,128
• Publication Number:
  US 20050159673A1
• Time in Patent Office: 1,240 Days
• Field of Search: 600/474, 600/504, 600/505, 600/549, 374/100
• US Class Current: 600/549
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/6851 Guide wires
• CPC Class Codes: A61B 5/6853 with a balloon

Abstract

A temperature sensing system and method for determining a patient'"'"'s core body temperature by measuring the temperature of the patient'"'"'s blood at a location in a vessel lumen retrograde of an insertion point of a temperature sensor or sensors into the vessel lumen.

Claims

1. A system for measuring the temperature of a body fluid flowing within a body lumen at a location upstream of the insertion of a temperature probe into the body lumen, comprising:

a temperature probe having a proximal end, an intermediate region having a bend formed therein and a distal region, the distal region being proximal of the bend and having a distal tip with a temperature sensor mounted thereon; and

a sheath adapted for insertion into a body lumen, the sheath having a proximal end and a distal end, the sheath having

a central lumen having a proximal opening disposed at the proximal end of the sheath, a distal opening disposed at the distal end of the sheath and a central lumen axis extending from the proximal opening to the distal opening,

a capture tube attached to the distal end of the sheath, the capture tube having a distal opening adjacent the central lumen distal opening, a proximal opening, and a lumen extending therebetween, the lumen having a lumen axis parallel to the central lumen axis, the lumen having a length, the length selected to receive and protect the distal tip and at least a portion of the distal region of the temperature probe when the sheath and temperature probe are inserted into a body lumen; and

wherein retracting the proximal end of the temperature probe from the sheath causes the distal tip of the temperature probe to move in a proximal direction, moving the distal tip out of the proximal opening of the capture tube to a desired location proximal to the proximal opening of the capture tube without additional assistance.

2. The system of claim 1, wherein the proximal end of the temperature probe extends into the distal end of the sheath and through the central lumen.