Blood-flow-occluding, temperature-sensing catheters and...

Details Blood-flow-occluding, temperature-sensing catheters and... Blood-flow-occluding, temperature-sensing catheters and...

2006-12-26

2006-12-26

Hindenburg, Max F. (Department: 3736)

Surgery

Diagnostic testing

Temperature detection

Reexamination Certificate

active

07153273

ABSTRACT:
A catheter assembly for sensing the temperature of an arterial wall or other body lumen includes a blood-flow-occluding feature to increase the accuracy of the temperature measurements. In addition to the flow-occluding feature, the catheter includes a distal end with a temperature sensing structure and a proximal end including a manually operated expansion control. The temperature sensing structure including one or more presentation elements in the form of a basket or braided structure having at least one temperature sensor supported thereon, each sensor being operative to generate an electrical signal indicative of temperature. The presentation elements are physically coupled to the manually operated expansion control, such that operation of the control causes the structure to move between a collapsed state, enabling the temperature sensing structure to be positioned in a section of the vessel to be measured, and an expanded state, wherein the sensor is in contact with, or immediately proximate to, the vessel wall.

REFERENCES:
patent: 5433708 (1995-07-01), Nichols et al.
patent: 6245026 (2001-06-01), Campbell et al.
patent: 6579243 (2003-06-01), Kokate et al.
patent: 6615071 (2003-09-01), Casscells et al.
patent: 6712771 (2004-03-01), Haddock et al.
Naghavi et al., “Thermosensor Catheter; a Nitinol Shape Memory Basket Catheter to Measure Temperature of Vessel Wall With Continuous Blood Flow”, Journal of the American College of Cardiology, Feb. 2000.

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