Flow-through fluid reservoir
First Claim
1. A flow-through fluid reservoir comprising:
- a body having an internal wall defining a chamber and a first fluid port in fluid communication with the chamber;
a movable member sized to sealingly engage the internal wall and being movable within the chamber toward and away from the first fluid port so as to respectively decrease and increase a volume of the chamber, the movable member having a fluid path therethrough in fluid communication with the first fluid port;
an actuator operatively coupled in fixed spatial relationship to the movable member, the body and actuator being movable relative to each other in telescoping relationship so as to move the movable member toward and away from the first fluid port, the actuator having a second fluid port in fluid communication with the fluid path of the movable member, whereby fluid can flow between the first and second fluid ports;
a shaped slot defined on one of the body and the actuator; and
a projection defined on the other of the body and the actuator, the projection cooperating with the shaped slot to constrain relative movement of the body and the actuator along a path corresponding to the shaped slot.
2 Assignments
0 Petitions
Accused Products
Abstract
A flow-through fluid reservoir includes a body with a first fluid port, a member movable within the body by an actuator to increase or decrease a volume of a chamber defined by a sidewall of the body. The actuator has a second fluid port. Movable member has a fluid path therethrough such that fluid ports are in fluid communication irrespective of the position of the movable member or the volume of chamber. A shaped slot on the shell of the actuator and a projection on the body cooperate to constrain relative movement of the body and actuator along a path corresponding to the shaped slot. The slot advantageously may include a stop intermediate therealong. A canted aspect of the slot may be used to initiate relative movement of the member within body. The body includes an end wall through which the first fluid port communicates. A shroud is defined by a coaxial extension of the sidewall beyond the end wall to surround the first fluid port, and gripping elements may be provided on the shroud. The projection may include a vent communicating into a space between a flexible barrier and an internal wall of the body. The slot may also have a one-way opening with a cammed roof. A clip may be provided for mounting the reservoir and includes a support member supporting a clip member which releasably receives the shroud and supports a mounting member such as for a sample site.
78 Citations
37 Claims
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1. A flow-through fluid reservoir comprising:
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a body having an internal wall defining a chamber and a first fluid port in fluid communication with the chamber; a movable member sized to sealingly engage the internal wall and being movable within the chamber toward and away from the first fluid port so as to respectively decrease and increase a volume of the chamber, the movable member having a fluid path therethrough in fluid communication with the first fluid port; an actuator operatively coupled in fixed spatial relationship to the movable member, the body and actuator being movable relative to each other in telescoping relationship so as to move the movable member toward and away from the first fluid port, the actuator having a second fluid port in fluid communication with the fluid path of the movable member, whereby fluid can flow between the first and second fluid ports; a shaped slot defined on one of the body and the actuator; and a projection defined on the other of the body and the actuator, the projection cooperating with the shaped slot to constrain relative movement of the body and the actuator along a path corresponding to the shaped slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A flow-through fluid reservoir comprising:
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a body having an internal wall defining a chamber and a first fluid port in fluid communication with the chamber; a movable member sized to sealingly engage the internal wall and being movable within the chamber toward and away from the first fluid port so as to respectively decrease and increase a volume of the chamber, the movable member having a fluid path therethrough in fluid communication with the first fluid port; an actuator operatively coupled in fixed spatial relationship to the movable member, the body and actuator being movable relative to each other in telescoping relationship so as to move the movable member toward and away from the first fluid port, the actuator having a second fluid port in fluid communication with the fluid path of the movable member, whereby fluid can flow between the first and second fluid ports; a projection defined on one of the body and the actuator; and a slot defined on the other of the body and the actuator, the slot having a one-way access opening adapted to receive the projection therethrough and into the slot and to resist movement of the projection back out of the slot through the access opening. - View Dependent Claims (28)
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29. A flow-through fluid reservoir comprising:
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a body having an internal wall defining a chamber and a first fluid port in fluid communication with the chamber; a movable member sized to sealingly engage the internal wall and being movable within the chamber toward and away from the first fluid port so as to respectively decrease and increase a volume of the chamber, the movable member having a fluid path therethrough in fluid communication with the first fluid port; an actuator operatively coupled in fixed spatial relationship to the movable member, the body and actuator being movable relative to each other in telescoping relationship so as to move the movable member toward and away from the first fluid port, the actuator having a second fluid port in fluid communication with the fluid path of the movable member, whereby fluid can flow between the first and second fluid ports; a slot defined on one of the body and the actuator; and a projection defined on the other of the body and the actuator, the projection cooperating with the slot for relative movement of the body and the actuator, the slot extending generally in a longitudinal direction of the body and having an aspect at one end of the slot being canted with respect to the longitudinal extent of the slot such that the projection bears against the canted aspect to facilitate initiation of movement of the movable member in response to relative rotation between the actuator with respect to the body.
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30. A flow-through fluid reservoir comprising:
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a body having an internal wall defining a chamber and a first fluid port in fluid communication with the chamber; a movable member sized to sealingly engage the internal wall and being movable within the chamber toward and away from the first fluid port so as to respectively decrease and increase a volume of the chamber, the movable member having a fluid path therethrough in fluid communication with the first fluid port; an actuator operatively coupled in fixed spatial relationship to the movable member, the body and actuator being movable relative to each other in telescoping relationship so as to move the movable member toward and away from the first fluid port, the actuator having a second fluid port in fluid communication with the fluid path of the movable member, whereby fluid can flow between the first and second fluid ports; a slot defined on one of the body and the actuator; a projection defined on the other of the body and the actuator, the projection cooperating with the slot for relative movement of the body and the actuator; and a flexible barrier coupled between the movable member and the body, the projection including a vent formed through the projection and communicating with a space between the flexible barrier and the body. - View Dependent Claims (31, 32, 33)
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34. A flow-through fluid reservoir comprising:
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a generally tubular body having a sidewall and an end wall defining a chamber, and a first fluid port in fluid communication with the chamber through the end wall; a movable member sized to sealingly engage the sidewall and being movable within the chamber toward and away from the end wall so as to respectively decrease and increase a volume of the chamber, the movable member having a fluid path therethrough in fluid communication with the first fluid port; and an actuator operatively coupled in fixed spatial relationship to the movable member, the body and actuator being movable relative to each other in telescoping relationship so as to move the movable member toward and away from the end wall, the actuator having a second fluid port in fluid communication with the fluid path of the movable member, whereby fluid can flow between the first and second fluid ports; a slot defined on one of the body and the actuator; a projection defined on the other of the body and the actuator, the projection cooperating with the slot for relative movement of the body and the actuator, the sidewall extending coaxially beyond the end wall to define a shroud surrounding the first fluid port. - View Dependent Claims (35, 36, 37)
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Specification