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公开(公告)号：JPH10225463A
公开(公告)日：1998-08-25
申请号：JP2222798
申请日：1998-02-03
Applicant: VALLEYLAB INC
Inventor： BLYTHE ROBERT LEWIS
Abstract: PROBLEM TO BE SOLVED: To measure the connecting state of pressure given to a transcutaneous passage to a user's peritoneal cavity, to put it in the concrete, to measure the openability of the passage. SOLUTION: The supply and output tube 13 of gaseous argon supplies prescribed measuring gas. A duct 16 with the gas of some volume selectively distributes measuring gas to a passage within a body cavity. This gaseous argon supply and output tube periodically connects a passage and the duct 16 to the body cavity to allow the pressure transducer 17 of the duct 16 to generate a signal. A circuit tests a signal that the pressure and the back pressure of a tube is balanced. A signal monitor 20 stores the pressure of the body cavity before connecting the converter of the duct 16 to a measured and supplied gas, and compares the stored pressure with the back pressure. A plurality of orifices supply a specific gas stream for a hand set and a valve to make the function of the stream to balance with the measured and supplied gas.
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公开(公告)号：CA2228399A1
公开(公告)日：1998-08-03
申请号：CA2228399
申请日：1998-01-30
Applicant: VALLEYLAB INC
Inventor： BLYTHE ROBERT LEWIS
Abstract: An apparatus for detecting an occlusion in a monitored pressure tube connected to a percutaneous passageway, wherein the pressure of inert gas within the tube is measured in relation to a predetermined pressure, and the rate of pressure change measured.
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公开(公告)号：CA2228399C
公开(公告)日：2000-05-30
申请号：CA2228399
申请日：1998-01-30
Applicant: VALLEYLAB INC
Inventor： BLYTHE ROBERT LEWIS
Abstract: A method and apparatus (10) detect occlusion in a tube to a passage into a body cavity. An argon gas supply output (13) received by plural selectable flow orifi ces so one or more of the orifices delivers predetermined metered gas. A duct (16) with a volu me of gas selectively provides metered gas to the passage. The tube connects the passage a nd the duct (16) periodically so a duct (16) pressure transducer (17) can signal. A circuit tests signals of tube equalization with a back pressure. A three way valve controlled by the circ uit connects the duct (16) transducer to gas metered to the cavity. The valve alternatively c onnects the duct (16) transducer to the tube to equalize the tube with metered gas to the back pr essure. A monitor (20) of the signals determines the rate of pressure change after the val ve connection The monitor (20) indicates pressure equalization after a timed interval with a t imer to establish intervals for checking back pressure. The monitor (20) remembers cavity pressure before connecting the duct (16) transducer to the metered gas and compares remembered p ressure with the back pressure after each test interval. Plural orifices provide specific gas flows to the handset and the valve for equalizing them with metered gas as a function of the flow. Connecting plural orifices to meter gas output, delivering the metered gas outpu t with one or more of the orifices, containing the volume of gas in the duct (16) connected to the metered gas output, selectively connecting the duct (16) to the passage, connecting the tube to the passage with the duct (16) and the transducer to periodically signal are steps. Coupling the circuit to one or more orifices, equalizing the tube with back pressure in response to the signals and coupling the transducer to the metered gas output are steps. Connecting the duct (16) transducer to the tube permits periodic back pressure equalization with metered gas output, signaling the monitor (20) with the transducer, determining periodically the rat e of pressure change in the tube by the transducer, indicating in the interval with the monito r (20) equalized tube pressure and remembering cavity pressure before connecting the metered gas output and the transducer for intervals and providing specific flows to the handset and the valve to make the back pressure a function of the selectable flow are steps.
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