Adjustable flow syringe

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

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604247, A61M 5315

Patent

active

059446986

ABSTRACT:
An adjustable flow syringe is provided that comprises a slidable plunger within a barrel. The barrel has a flow discharge end wherein a neck is located. The neck has a conduit extending therethrough which has an outlet and an inlet such that the conduit is in fluid communication with the barrel.
The adjustable flow syringe includes either a valve insert or a porous insert in the conduit which is configured to adjust the flow rate of a fluid leaving the syringe such that a low amount of manually applied force delivers the fluid in drops. The valve insert is formed from a resilient material and conforms to the contours of the conduit. The valve insert has a portion that extends across the conduit outlet with an opening formed therethrough. The porous insert is formed from a porous material and is configured with a shape corresponding to the shape of the conduit so that fluid passes through the conduit primarily via the pores of the porous insert.

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patent: 5259956 (1993-11-01), Mercer et al.
patent: 5387103 (1995-02-01), Fischer
patent: 5643227 (1997-07-01), Stevens

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