Directional flow control
AssigneeNypro Inc.
InventorsJoseph R. Paradis, Peter N. Kotsifas
Life of this patent
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Abstract
A flow control device in which flow channels converge in a housing containing an injection site and a pre-biased flow control diaphragm. The injection site may include a diaphragm. The diaphragm can be acted upon by an internal actuator or plunger that extends into one of the flow channels where the plunger can be engaged by an external member such as a Luer fitting. The actuator or plunger may be of rigid or flexible construction is at the entry position of an intermediate channel and extends to an output channel of the injection site.
Claims19
The method of controlling fluid flow in a device which includes the steps of:
- (1) introducing fluid into an input channel;
- (2) diverting said fluid into an output channel;
- and
- (3) controlling the flow of said fluid from said input channel into said output channel by applying peripheral mechanical pressure to a diaphragm which is bowed under pressure into said input channel, wherein said peripheral pressure is applied by further engaging an internal member in contact with said diaphragm by an external member after absorbing the initial engagement to compensate for tolerance variations between.
The method of directionally controlling the flow of fluid in accordance with claim 10 which comprises
- controlling the flow from said input channel into said branch channel by a diaphragm and restricting said diaphragm from being sucked into said branch channel.
The method of directional flow control which comprises the steps of:
- (a) directing flow into a first housing, including a seat for a fluid pressure control diaphragm and a separate seat for an injection control diaphragm, with the diaphragms on the seats of said first housing;
- (b) directing said flow into a second housing, including supports for the control diaphragms, with said second housing joined to said first housing with said supports for said diaphragms thereagainst;
- and
- (c) flexing a plunger inserted into said first member with respect to said injection control diaphragm.
The method of controlling fluid flow in a device with input and output channels, which comprises the steps of:
- providing an internal member for the control of flow between said input and output channels;
- and
- activating the control over flow by a member external to said device after using said internal member to compensate for tolerance variations in the external member.
Dependencies are inferred from the claim text.