Carrtech LLC

Other

Sue E Carr

Charles E McCall, Jr

David Lee Foshee

Edward Paul Browka

Jessie Delgado

Theodore Mosler

Megan Anderson Conley

James Kevin Fentress

Charles E Mccall

A filtering needle assembly for use in administering a liquid payload, including: a needle and connector portion; a filtering needle body cap; a seal plug, and a filter: The seal plug initially lacking a needle channel so that a distal end of a hollow needle must be forced through the distal end of the seal plug while the seal plug is retained by a holding tool with a hollow midline of adequate depth to receive the protruding end of the hollow needle. An attempt to reuse the filtering needle assembly with a second insertion of a hollow needle into the filtering needle assembly will not work as the distal end of the hollow needle will push the seal plug distally rather than traverse the seal plug.

Filtering needle assembly with seal plug

A filtered needle for use in administering a liquid payload, including a needle and connector portion and a filtering needle cap. The filtering needle cap including a distal open end in fluid communication via an internal channel with a proximal open end of the filtering needle cap. The filtering needle cap proximal end sized to receive the distal end of the hub within the proximal end of the filtering needle cap to reversibly engage the hub when needle distal end is inserted into the internal channel. The filtering needle cap including a filter element and a seal to seal around an outside diameter of the hollow needle so that liquid payload is drawn into the lumen in the hollow needle as liquid payload is filtered and drawn into the fluid fitting. The filtering needle cap is designed to limit a dead volume of liquid payload drawn into the filtering needle cap but not entering into the distal end of the hollow needle.

Filtering needle cap with a seal around a needle

Filtering needle cap having a sleeve sealing around a needle

A single in-line filter hollow needle has an outer wall, a proximal end, a distal end with a pointed tip and a central opening between the ends for communicating fluids therethrough. The proximal end is secured to a luer lock for removable connection to a syringe. A filter is located in the central opening proximate to the tip. The outer wall of the needle has a frangible deformation proximate to the filter and remote from the end of the needle whereby the needle may be broken to expose a fresh point after fluid is aspirated through the needle to the syringe is filtered.

Filter needle

Growing community of inventors

Dickerson, MD, United States of America

Sue E Carr