Integral pressure sensor probe for a cardiac assistance device
OwnerMartin D. McCurdyinventor
Life of this patent
Estimating the term…
Abstract
A pressure sensor probe is disclosed whose pressure interface forms the extreme end of a balloon type cardiac assistance device, hydraulic interface usually being provided to feed the pressure within a patient's aorta back to a sensor outside the patient. A small tube provides the inter-connection between the interface of blood and sensing solution and the sensor which tube enters the tubular conduit used to feed pneumatic pressure to the balloon at an intermediate position thereof and extends therethrough toward the patient.
Claims7
A cardiac assistance device including a pump structure adapted to be inserted into a blood vessel of a patient having a conduit for conducting fluid medium into and out of the blood vessel and an expandable and contractile structure connected to said conduit for expansion and contraction in response to said fluid medium to pump blood within the vessel, the conduit having at least one wall and two ends, the first end being opposite from said expandable and contractile structure and being adapted to communicate with a source of pressurized fluid, the improvement comprising:
- a pressure sensor probe which extends out of said conduit at its second end, said probe including a tube within at least a portion of said conduit, said tube having an outer diameter sized to fit loosely within said conduit without disrupting fluid medium flow therein, said tube having an open end adjacent the second end of said conduit and a second end adapted for connected to a pressure sensing device, and a tip member attached between said tube and said conduit and forming a seal therebetween.
Dependencies are inferred from the claim text.