Device for invasively measuring fluid pressure
First Claim
1. A device for invasively measuring fluid pressure, the device comprising:
- a disposable housing having a fluid contacting area and a non-fluid contacting area;
a disposable diaphragm in a substantially non-elastic state disposed within the housing and separating the fluid contacting area from the non-fluid contacting area, a side of the diaphragm adapted to contact the fluid, the diaphragm having sufficient flexibility to move a distance axially within the non-fluid contacting area in response to fluid contact, the distance being substantially proportional to the fluid pressure; and
an electronic sensing device removably attached adjacent the non-fluid contacting area of the housing, and spaced from the diaphragm, the electronic sensing device capable of determining the fluid pressure.
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Accused Products
Abstract
A device for invasively measuring fluid pressure is disclosed. The device includes a disposable housing having a fluid contacting area and a non-fluid contacting area. A disposable diaphragm in a substantially non-elastic state is disposed within the housing and separates the fluid contacting area from the non-fluid contacting area. A side of the diaphragm is adapted to contact the fluid, and the diaphragm has sufficient flexibility to move a distance axially within the non-fluid contacting area in response to fluid contact. The distance is substantially proportional to the fluid pressure. An electronic sensing device is removably attached adjacent the non-fluid contacting area of the housing, and is spaced from the diaphragm. The electronic sensing device is capable of determining the fluid pressure.
14 Citations
22 Claims
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1. A device for invasively measuring fluid pressure, the device comprising:
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a disposable housing having a fluid contacting area and a non-fluid contacting area;
a disposable diaphragm in a substantially non-elastic state disposed within the housing and separating the fluid contacting area from the non-fluid contacting area, a side of the diaphragm adapted to contact the fluid, the diaphragm having sufficient flexibility to move a distance axially within the non-fluid contacting area in response to fluid contact, the distance being substantially proportional to the fluid pressure; and
an electronic sensing device removably attached adjacent the non-fluid contacting area of the housing, and spaced from the diaphragm, the electronic sensing device capable of determining the fluid pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for invasively measuring fluid pressure, the method comprising:
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contacting a diaphragm with a fluid, the diaphragm in a substantially non-elastic state and sealingly disposed within a disposable housing, the diaphragm separating a fluid-contacting area from a sealed non-fluid contacting area, the contacting axially moving the diaphragm a distance within the non-fluid contacting area in response to the fluid contact, the distance being substantially proportional to the fluid pressure; and
determining the fluid pressure based on the diaphragm movement. - View Dependent Claims (16, 17, 18, 19, 21, 22)
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20. A method for invasively measuring fluid pressure, the method comprising:
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providing a disposable housing having a disposable diaphragm in a substantially non-elastic state therein that separates a fluid contacting area from a non-fluid contacting area;
exposing the fluid contacting area to a fluid, whereby at least some of the fluid contacts the diaphragm, thereby axially moving the diaphragm a distance within the non-fluid contacting area, the distance substantially proportional to the fluid pressure; and
measuring a pressure of the non-fluid contacting area after the diaphragm moves the distance within the non-fluid contacting area.
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Specification