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US 5,207,227 AGranted
Multiprobes with thermal diffusion flow monitor
OwnerAlexandros D. Powersinventor
Life of this patent
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Abstract
A single probe with thermal diffusion flow monitor (hereinafter known as "SPTDFM") that has improved reliability, smaller overall size, simpler method of sensor positioning, better compatibility and capability to monitor blood flow, pressure and other critical physiological parameters is provided. The SPTDFM is formed by the combination of a thermal diffusion flow monitor, a pressure monitor, a multiple parameter monitor and a support structure.
Claims26
A single probe system useful for monitoring blood flow in a tissue comprises:
- a support structure having a first side surface and a second side surface opposite to said first side surface,
- an anterior and a posterior surface connected to said first and second side surfaces;
- thermal diffusion means to measure blood flow housed in said support structure near said first side surface,
- said thermal diffusion means further comprises a conical hot film probe with a sensor tip adapted to contact the tissue, wherein said sensor tip comprises a thin metal layer;
- a backing material onto which said thin metal layer is deposited;
- a protective coating deposited over said thin metal layer;
- control means to heat said sensor tip as a heat source while simultaneously measuring a temperature correlating to the blood flow in the tissue;
- pressure monitor means housed in said support structure near said anterior surface and adjacent to said thermal diffusion means to monitor pressure in the tissue;
- and
- multiple parameter means housed in said support structure near said second surface and adjacent to said pressure monitor means to monitor oxygen content, temperature and potential of the tissue.
7 more elements
A single probe system useful for monitoring blood flow in a tissue comprises:
- a support structure having a first side surface and a second side surface opposite to said first side surface,
- an anterior and a posterior surface connected to said first and second side surfaces;
- thermal diffusion means to measure blood flow housed in said support structure near said first side surface,
- said thermal diffusion means further comprises a conical hot film probe with a plurality of sensor tips adapted to contact the tissue, wherein each sensor tip comprises a thin metal layer;
- a backing material onto which said thin metal layer is deposited;
- a protective coating deposited over said thin metal layer;
- control means to heat a first sensor tip of said plurality of sensor tips as a heat source while simultaneously measuring temperature drops of sensor tips other than said first sensor tip of said plurality of sensor tips at a distance of d.sub.1 or multiples thereof from said first sensor tip, and correlating said temperature drops to the blood flow in the tissue;
- pressure monitor means housed in said support structure near said anterior surface and adjacent to said thermal diffusion means to monitor pressure in the tissue;
- and
- multiple parameter means housed in said support structure near said second surface and adjacent to said pressure monitor means to monitor oxygen content, temperature and potential of the tissue.
7 more elements
A single probe system useful for monitoring blood flow in a tissue comprises:
- a support structure having a first side surface and a second side surface opposite to said first side surface,
- an anterior and a posterior surface connected to said first and second side surfaces;
- thermal diffusion means to measure blood flow housed in said support structure near said first side surface,
- said thermal diffusion means further comprises a conical hot film probe with a plurality of sensor tips adapted to contact the tissue, wherein each sensor tip comprises a thin metal layer;
- a backing material onto which said thin metal layer is deposited;
- a protective coating deposited over said thin metal layer;
- control means to heat at least two sensor tips of said plurality of sensor tips as heat sources while simultaneously measuring temperature drops of sensor tips other than said first two sensor tips of said plurality of sensor tips at a distance of d.sub.2 or multiples thereof from one of said at least two sensor tips, and correlating said temperatures to the blood flow in the tissue;
- pressure monitor means housed in said support structure near said anterior surface and adjacent to said thermal diffusion means to monitor pressure in the tissue;
- and
- multiple parameter means housed in said support structure near said second surface and adjacent to said pressure monitor means to monitor oxygen content, temperature and potential of the tissue.
7 more elements
A thermal diffusion means useful for monitoring blood flow in a tissue comprises:
- a conical hot film probe with a plurality of sensor tips adapted to contact the tissue, wherein each sensor tip comprises a thin metal layer;
- a backing material onto which said thin metal layer is deposited;
- a protective coating deposited over said thin metal layer;
- and
- control means to heat a first sensor tip of said plurality of sensor tips as a heat source while simultaneously measuring temperature drops of sensor tips other than said first sensor tip of said plurality of sensor tips at a distance of d.sub.1 or multiples thereof from said first sensor tip, and correlating said temperature drops to the blood flow in the tissue.
2 more elements
A thermal diffusion means useful for monitoring blood flow in a tissue comprising:
- a conical hot film probe with a plurality of sensor tips adapted to contact the tissue, wherein each sensor tip comprises a thin metal layer;
- a backing material onto which said thin metal layer is deposited;
- a protective coating deposited over said thin metal layer;
- and
- control means to heat at least two sensor tips of said plurality of sensor tips as heat sources while simultaneously measuring temperature drops of sensor tips other than said at least two sensor tips of said plurality of sensor tips at a distance of d.sub.2 or multiples thereof from one of said at least two sensor tips, and correlating said temperature drops to the blood flow in the tissue.
2 more elements
Dependencies are inferred from the claim text.