Instrument for measuring living body components
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
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.
57 Citations
6 Claims
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1. 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. - View Dependent Claims (2)
- (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
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3. 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. - View Dependent Claims (4, 5, 6)
- (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
Specification