US Patent No: 7,021,148
Number of patents in Portfolio can not be more than 2000
Apparatus and method for sealing pressure sensor membranes
Stats
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Apr 4, 2006
Issued date -
Apr 30, 2002
filing date -
10/136,411
serial no -
In Force
status
Importance
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Abstract
The present invention lessens the amount of air entering between mating membranes of a pressure sensor. The pressure sensor of the present invention includes a transducer portion and separate patient or medical fluid transfer portion or dome. The transducer portion is reusable and the dome is disposable. The dome defines a fluid flow chamber that is bounded on one side by a dome membrane. Likewise, the transducer is mounted inside a housing, wherein the housing defines a surface that holds a transducer membrane. The two membranes mate when the dome is fitted onto the transducer housing. The pressure sensor enhances the seal between the mated membranes by creating higher localized contact stresses. The pressure sensor also reduces the amount of gas that permeates from the fluid chamber across the dome membrane and between the interface by making the dome membrane from a material having a low vapor transmission.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,920,972 Gel-filled blood pressure transducer | 41 | 1988 | |
| 5,417,395 Modular interconnecting component support plate | 41 | 1993 | |
| 5,752,918 Modular medical pressure transducer | 24 | 1995 | |
| 5,868,678 Two-part medical pressure transducer with diaphragm stand-offs | 7 | 1996 | |
| 5,848,971 Modular medical pressure transducer | 12 | 1997 | |
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| 5,993,395 Pressure transducer apparatus with disposable dome | 36 | 1996 | |
| 6,117,086 Pressure transducer apparatus with disposable dome | 35 | 1997 | |
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| 5,483,994 Pressure transducer with media isolation and negative pressure measuring capability | 9 | 1995 | |
| 5,644,285 Pressure transducer with media isolation | 16 | 1995 | |
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| 4,499,903 Methods and apparatus for testing a blood pressure monitoring system of the hydraulic type | 9 | 1979 | |
| 4,562,845 Methods and apparatus for testing a blood pressure monitoring system of the hydraulic type | 8 | 1984 | |
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| 4,885,983 Self-retaining diaphragm seal | 10 | 1988 | |
| 5,115,724 Adapter ring for a diaphragm seal | 3 | 1990 | |
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| 4,864,463 Capacitive pressure sensor | 55 | 1988 | |
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| 5,000,049 Pressure gauge for medical applications | 21 | 1988 | |
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| 5,181,422 Diaphragm type fluid pressure gauge | 22 | 1991 | |
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| 4,314,480 Venous pressure isolator | 81 | 1980 | |
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| 4,856,339 Medical infusion pump with sensors | 53 | 1988 | |
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| 6,139,503 Invasive blood pressure measurement device | 2 | 1999 | |
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| 5,501,177 Animal watering valve | 10 | 1994 | |
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| 5,614,677 Diaphragm gage for measuring the pressure of a fluid | 50 | 1995 | |
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| 5,551,299 Apparatus for measuring pressure in a fluid using a seal diaphragm and pressure transmitting medium | 8 | 1994 | |
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| 5,914,033 Insert for a pressure transducer within a medical treatment apparatus | 6 | 1997 | |
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| 4,798,090 Apparatus for use with fluid flow transfer device | 70 | 1987 | |
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| 4,462,409 Pressure transducer dome | 12 | 1981 | |
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| 5,892,156 Pressure measuring sensor and apparatus having a seal between a housing having spring-elastic properties and a pressure measuring cell | 4 | 1998 | |
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| 5,551,300 User-restricted passage in reusable portion of device for monitoring a physiological pressure | 19 | 1995 | |
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| 5,463,904 Multimeasurement vortex sensor for a vortex-generating plate | 20 | 1994 | |
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| 4,735,098 Dual diaphragm differential pressure transducer | 32 | 1986 | |
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| 4,856,340 Pressure diaphragm for a medication infusion system | 68 | 1987 | |
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| 4,924,701 Pressure measurement system | 23 | 1988 | |
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| 5,540,100 Pressure transducer for measuring the pressure of a fluid, in particular for invasive blood pressure measurements | 7 | 1995 | |
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| 4,545,389 Disposable physiological pressure sensing system | 41 | 1982 | |
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| 6,280,406 Extracorporeal blood processing system | 27 | 1998 | |
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| 4,610,256 Pressure transducer | 130 | 1984 | |
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| 6,168,566 Pressure sensing device | 11 | 1998 | |
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| 5,165,281 High pressure capacitive transducer | 23 | 1989 | |
| 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM | 2009 | ||
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 4, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 4, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |