SYSTEM AND METHOD FOR DRUG PREPARATION AND DELIVERY
First Claim
1. A method of adjusting the pressure within a container, the container in valved fluid communication with a variable volume chamber through a container port, the variable volume chamber defined by a rigid chamber wall and a membrane, the membrane capable of being moved toward or away from the rigid chamber wall under the influence of positive or negative pressure, the method comprising:
- closing a container port valve fluidly connecting the chamber with the container port fluidly connecting the container to the container port,measuring a first pressure associated with the chamberopening the container port valvemeasuring a second pressure associated with the chambermoving the membrane away from the rigid chamber wall to decrease the pressure in the container, or moving the membrane toward the rigid chamber wall to increase the pressure in the container.
1 Assignment
0 Petitions
Accused Products
Abstract
A disposable cassette for mixing a drug in a vial includes a liquid inlet for connection to a liquid supply, a first vial spike, a second vial spike, a chamber and a valve mechanism. The chamber, the first and second vial spikes, and the liquid inlet are in fluid communication with each other. The valve mechanism may be actuated to control flow between the chamber, the vial receptacles and the liquid inlet.
15 Citations
21 Claims
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1. A method of adjusting the pressure within a container, the container in valved fluid communication with a variable volume chamber through a container port, the variable volume chamber defined by a rigid chamber wall and a membrane, the membrane capable of being moved toward or away from the rigid chamber wall under the influence of positive or negative pressure, the method comprising:
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closing a container port valve fluidly connecting the chamber with the container port fluidly connecting the container to the container port, measuring a first pressure associated with the chamber opening the container port valve measuring a second pressure associated with the chamber moving the membrane away from the rigid chamber wall to decrease the pressure in the container, or moving the membrane toward the rigid chamber wall to increase the pressure in the container. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for adjusting the pressure within a container comprising:
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a variable volume chamber defined by a rigid chamber wall and a membrane, the membrane capable of being moved toward or away from the rigid chamber wall under the influence of positive or negative pressure; a container port in fluid communication with the variable volume chamber through a container port valve; a pressure transducer configured to measure the pressure associated with the variable volume chamber; a controller configured to receive pressure information from the pressure transducer, and to control the container port valve and movement of the membrane, wherein the container can be fluidly connected to the container port valve, and the controller is configured to; determine a first pressure of the variable volume chamber with the container port valve closed, determine a second pressure of the variable volume chamber with the container port valve open, open the container port valve, and control movement of the membrane toward or away from the rigid chamber wall to increase or decrease the pressure within the container. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification