Infusion arrangement and method
First Claim
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1. An arrangement for administering a predetermined amount of a substance into an organism, the arrangement comprising:
- a member adapted to provide information indicative of a tissue resistance against flow of a fluid containing the substance upon administration into the tissue;
a controller adapted to adjust an administration characteristic of the fluid based on the information such as to achieve an intended absorption rate of the substance;
a pump adapted to be coupled to a reservoir of the fluid and adapted to drive the fluid;
a conduit, in particular comprising a flexible tubing, for guiding the fluid drive by the PUMP from the reservoir into the tissue, the conduit having one end, a cannula, inserterable into the tissue and having another end coupled to the pump unit;
wherein the controller is adapted to control the pump to adjust the flow rate of the fluid to comply with the adjusted administration characteristic;
wherein the member comprises a pressure sensor and is adapted to measure a pressure of the fluid in the conduit;
wherein the arrangement is adapted, using the pressure sensor, to determine a pressure difference based ona first pressure measurement, when the cannula is inserted into the tissue; and
a second pressure measurement, when the cannula is external to the tissue at atmospheric pressure.
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Abstract
An arrangement for administering a predetermined amount of a substance into an organism is presented. The arrangement includes a member adapted to provide information indicative of a tissue resistance against flow of a fluid containing the substance upon administration into the tissue and a controller adapted to adjust an administration characteristic of the fluid based on the information such as to achieve an intended absorption rate of the substance.
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Citations
16 Claims
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1. An arrangement for administering a predetermined amount of a substance into an organism, the arrangement comprising:
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a member adapted to provide information indicative of a tissue resistance against flow of a fluid containing the substance upon administration into the tissue; a controller adapted to adjust an administration characteristic of the fluid based on the information such as to achieve an intended absorption rate of the substance; a pump adapted to be coupled to a reservoir of the fluid and adapted to drive the fluid; a conduit, in particular comprising a flexible tubing, for guiding the fluid drive by the PUMP from the reservoir into the tissue, the conduit having one end, a cannula, inserterable into the tissue and having another end coupled to the pump unit; wherein the controller is adapted to control the pump to adjust the flow rate of the fluid to comply with the adjusted administration characteristic; wherein the member comprises a pressure sensor and is adapted to measure a pressure of the fluid in the conduit; wherein the arrangement is adapted, using the pressure sensor, to determine a pressure difference based on a first pressure measurement, when the cannula is inserted into the tissue; and a second pressure measurement, when the cannula is external to the tissue at atmospheric pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method, comprising:
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providing a system including; a member adapted to provide information indicative of a tissue resistance against flow of a fluid containing the substance upon administration into the tissue; a controller adapted to adjust an administration characteristic of the fluid based on the information such as to achieve an intended absorption rate of the substance; a pump adapted to be coupled to a reservoir of the fluid and adapted to drive the fluid; a conduit, in particular comprising a flexible tubing, for guiding the fluid drive by the PUMP from the reservoir into the tissue, the conduit having one end, a cannula, inserterable into the tissue and having another end coupled to the pump unit; wherein the controller is adapted to control the pump to adjust the flow rate of the fluid to comply with the adjusted administration characteristic; wherein the member comprises a pressure sensor and is adapted to measure a pressure of the fluid in the conduit; performing a first pressure measurement with a pressure sensor, when a cannula is inserted into a tissue;
of an organism;performing a second pressure measurement with the pressure sensor, when the cannula is external to the tissue at atmospheric pressure; determining a pressure difference from the first pressure measurement and the second pressure measurement with a controller arranged to receive the first pressure measurement and the second pressure measurement from the pressure sensor. - View Dependent Claims (15, 16)
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Specification