Patent US5892694A successfully refreshed from Google Patents.
Patent US4813423A successfully refreshed from Google Patents.
US4813423A
Expired / Lapsed
US
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Instrument for measuring living body components
Assignee: Mitsubishi Chemical Corp
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Filing: 1987-05-22
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Granted: 1989-03-21
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Expires: 2007-05-22
Abstract
Abstract Disclosed is an instrument for measuring living body components, which has (i) a fine tube having at one end thereof a connection portion to be connected to an indwelling needle or indwelling catheter and an infusion portion, from which at least a blood anticoagulant solution can be infused, (ii) a fine linear sensor for measuring living body components, extended from the inferior of the fine tube to the outside through the connection portion, and (iii) a mechanism for introducing blood at least into the interior of a fine tube portion of the indwelling needle or catheter intermittently or periodically when the indwelling needle or catheter is connected to the fine tube and kept in the blood vessel and then discharging blood into the blood vessel. A sensing portion of the sensor is located within the fine tube portion of the indwelling needle or catheter when the indwelling needle or catheter is connected to the connection portion of the fine tube.
Inventors
- 👤 Katsuyuki Miyasaka
- 👤 Masao Katayama
- 👤 Hisayoshi Yamamori
- 👤 Teruyoshi Uchida
- 👤 Junichi Tashita
- 👤 Akihiko Ooe
- 👤 Youjirou Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:01
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4925; A; A61; A61B; A61B5/00; A61B5/145; A61B5/14503; A61B5/15; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150992; A61B5/155
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
261 words
An instrument for measuring living body components, which comprises a (i) fine tube having at one end thereof a connection portion to be connected to an indwelling needle or indwelling catheter and an infusion portion, from which at least a solution of a blood anticoagulant can be infused; (ii) a fine linear sensor for measuring living body components, which is extended from the interior of the fine tube to the outside through the connection portion; and (iii) a mechanism for introducing blood at least into the interior of a fine tube portion of the indwelling needle or indwelling catheter intermittently or periodically when the indwelling needle or indwelling catheter is connected to the fine tube and kept in the blood vessel and then discharging blood into the blood vessel, said mechanism for introducing blood at least into the interior of the fine tube portion of the indwelling needle or indwelling catheter being a mechanism for intermittently or periodically applying a pressure to the wall of the fine tube and releasing said pressure, at least a part of the wall of the fine tube having an elasticity such that said part of the wall is deformed under application of an external pressure and then original shape of said part of the wall is restored when an external pressure different from said external pressure is applied or said external pressure is released; and a sensing portion of the sensor being located within the fine tube portion of the indwelling needle or indwelling cathether is connected to the connection portion of the fine tube.
Claim 2
Dependent Claim
261 words
An instrument for measuring living body components, which comprises a (i) fine tube having at one end thereof a connection portion to be connected to an indwelling needle or indwelling catheter and an infusion portion, from which at least a solution of a blood anticoagulant can be infused; (ii) a fine linear sensor for measuring living body components, which is extended from the interior of the fine tube to the outside through the connection portion; and (iii) a mechanism for introducing blood at least into the interior of a fine tube portion of the indwelling needle or indwelling catheter intermittently or periodically when the indwelling needle or indwelling catheter is connected to the fine tube and kept in the blood vessel and then discharging blood into the blood vessel, said mechanism for introducing blood at least into the interior of the fine tube portion of the indwelling needle or indwelling catheter being a mechanism for intermittently or periodically applying a pressure to the wall of the fine tube and releasing said pressure, at least a part of the wall of the fine tube having an elasticity such that said part of the wall is deformed under application of an external pressure and then original shape of said part of the wall is restored when an external pressure different from said external pressure is applied or said external pressure is released; and a sensing portion of the sensor being located within the fine tube portion of the indwelling needle or indwelling cathether is connected to the connection portion of the fine tube.
Claim 3
Dependent Claim
40 words
An instrument for measuring living body components according to claim 1, wherein the sensing portion of the sensor is located at a point distant by 10 mm or less from the top end of the indwelling needle or indwelling catheter.
Claim 4
Dependent Claim
221 words
An instrument for measuring living body components, which comprises a (i) fine tube having at one end thereof a connection portion to be connected to an indwelling needle or indwelling catheter and an infusion portion, from which at least a solution of a blood anticoagulant can be infused; (ii) a fine linear sensor for measuring living body components, which is extended from the interior of the fine tube to the outside through the connection portion; and (iii) a mechanism for introducing blood at least into the interior of a fine tube portion of the indwelling needle or indwelling cather intermittently or periodically when the indwelling needle or indwelling cathether is connected to the fine tube and kept in the blood vessel and then discharging blood into the blood vessel, said mechanism for introducing blood at least into the interior of the fine tube portion of the indwelling needle or indwelling catheter comprising means for defining a volume-variable hollow portion connected only to the interior of the fine tube and a mechanism for applying a pressure to said hollow portion and releasing the pressure; and a sensing portion of the sensor being located within the fine tube portion of the indwelling needle or indwelling catheter when the indwelling needle or indwelling catheter is connected to the connection portion of the fine tube.
Claim 5
Dependent Claim
221 words
An instrument for measuring living body components, which comprises a (i) fine tube having at one end thereof a connection portion to be connected to an indwelling needle or indwelling catheter and an infusion portion, from which at least a solution of a blood anticoagulant can be infused; (ii) a fine linear sensor for measuring living body components, which is extended from the interior of the fine tube to the outside through the connection portion; and (iii) a mechanism for introducing blood at least into the interior of a fine tube portion of the indwelling needle or indwelling cather intermittently or periodically when the indwelling needle or indwelling cathether is connected to the fine tube and kept in the blood vessel and then discharging blood into the blood vessel, said mechanism for introducing blood at least into the interior of the fine tube portion of the indwelling needle or indwelling catheter comprising means for defining a volume-variable hollow portion connected only to the interior of the fine tube and a mechanism for applying a pressure to said hollow portion and releasing the pressure; and a sensing portion of the sensor being located within the fine tube portion of the indwelling needle or indwelling catheter when the indwelling needle or indwelling catheter is connected to the connection portion of the fine tube.
Claim 6
Dependent Claim
40 words
An instrument for measuring living body components according to claim 3, wherein the sensing portion of the sensor is located at a point distant by 10 mm or less from the top end of the indwelling needle or indwelling catheter.
Claim 7
Dependent Claim
24 words
An instrument for measuring living body components according to claim 3, wherein said means for defining a volume-variable hollow portion is a hollow balloon.
Claim 8
Dependent Claim
23 words
An instrument for measuring living body components according to claim 3, wherein said means for defining a volume-variable hollow portion is a syringe.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |