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US 2023/0414868 A1Published application
Medical device
AssigneeTerumo Kabushiki Kaisha
InventorsHiroki ARIMA, Yoshiki KOMEDA
Life of this patent
Estimating the term…
Abstract
A medical device includes an injection unit connectable to a barrel that is configured to contain a drug and having internal spaces that allow passage of the drug and includes a first measurement unit that measures a pressure at a first part in the distal end side of the internal spaces and a pressure at a second part closer to the proximal end side of the internal spaces than the first part.
Claims20
A medical device comprising:
- an injection unit configured to be connected to a drug container that is configured to contain a drug, the injection unit including a channel that allows passage of the drug;
- and
- a first measurement unit configured to measure a pressure at a first part in a distal end side of the channel and at a second part closer to a proximal end side of the channel than the first part.
A medical device comprising:
- a drug container configured to contain a drug;
- an injector configured to be connected to the drug container;
- a first sensor configured to measure a pressure at a first part in a distal end side of a lumen of the injector;
- and
- a second sensor configured to measure a pressure at a second part closer to a proximal end side of the lumen of the injection than the first part in the distal end of the lumen measured by the first sensor.
2 more elements
A method for determining that a drug is being administered to an affected area of living body, the method comprising:
- inserting a needle of an injector through a body surface to perform percutaneous puncture;
- administering a drug contained in a drug container into the injector;
- measuring a pressure at a first part in a distal end side of a lumen of the injector with a first sensor;
- measuring a pressure at a second part of the lumen of the injector with a second sensor, the second part being closer to a proximal end side of the lumen of the injector than the first part in the distal end of the lumen;
- determining that the distal end of the needle is inserted into a closed space when the measured pressures at the first part and the second part are equal;
- and
- determining that the distal end of the needle is inserted into an open space when the measured values of the first sensor and the second sensor are different.
4 more elements
Dependencies are inferred from the claim text.