Patent ID: 11857768
Assignee: CARRTECH CORP.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A filtering needle assembly (100) for use in administering a liquid payload, the filtering needle assembly comprising: a needle and connector portion (110); a filter needle cap body (250); a seal plug (300), and a filter (400):
the needle and connector portion (110) comprising:
a hollow needle (150) with a distal tip (154) of the hollow needle having an opening to a lumen (156) running through the hollow needle; and
a hub (118) comprising:
an open proximal end (114) adapted to reversibly engage a fluid fitting; and
a distal end of the hub engaged with a proximal end of the hollow needle; and

the filter needle cap body (250) comprising:
a distal open end (204) in fluid communication via an internal channel with a proximal open end of the filter needle cap body;
the proximal open end (208) of the filtering needle assembly sized to receive the distal end of the hub within the proximal open end of the filter needle cap body to reversibly engage the hub when the distal end of the hollow needle is inserted into the internal channel;
the filter (400) adapted for removing debris from the liquid payload as the liquid payload is drawn through the filter and the filtering needle assembly into the lumen within the hollow needle as the liquid payload is drawn into the fluid fitting; and
the seal plug (300) to surround a distal portion of the hollow needle after the distal tip of the hollow needle is pushed through the seal plug to form a seal between the seal plug and the distal portion of the hollow needle so that the liquid payload is drawn into the lumen in the hollow needle as the liquid payload is drawn into the fluid fitting and is blocked by the seal plug from traveling down an outside diameter of the hollow needle within the filtering needle assembly; and
wherein removing the hollow needle from the seal plug precludes reliable reinsertion of the hollow needle through the seal plug as subsequent contact of the distal end of the hollow needle pushes the seal plug towards the distal open end of the filter needle cap body to preclude a second use of the filtering needle assembly.