초록 ▼

A medical valve assembly is described in which the valve assembly has a female luer lock portion on an inlet end of the device and a male luer lock portion on the outlet portion of the valve. A movable piston seals the inlet portion of the valve from the outlet portion when the piston is in the clos

A medical valve assembly is described in which the valve assembly has a female luer lock portion on an inlet end of the device and a male luer lock portion on the outlet portion of the valve. A movable piston seals the inlet portion of the valve from the outlet portion when the piston is in the closed position. When a syringe is attached to the inlet portion of the valve assembly, the piston is displaced in a manner that unseals a fluid channel inlet. This connects the end of the syringe to the fluid channel which is connected, at its outlet end, to a catheter or other device, connected to a patient. Thus, medication can be introduced to, or fluids aspirated from, a patient\s bloodstream, without the use of a syringe having a needle. When the syringe is removed from the inlet to the valve assembly, the piston is urged by a biasing means into its original closed position creating a seal between the inlet portion of the valve and the outlet portion of the valve. This feature maintains catheter patency. The top surface of the piston along with the area of the female luer lock connector does not have any fluid reservoir and can be easily cleaned to prevent the possibility of bacterial infection as a result of repeated uses of the valve assembly.

대표청구항 ▼

A valve assembly adapted to facilitate the administration and withdrawal of fluid from a patient comprising valve assembly housing having an input side and an output side, a fluid channel having an input opening, a piston and biasing means housing wherein said fluid channel extends between the outpu

A valve assembly adapted to facilitate the administration and withdrawal of fluid from a patient comprising valve assembly housing having an input side and an output side, a fluid channel having an input opening, a piston and biasing means housing wherein said fluid channel extends between the output side of said valve assembly housing and said piston and biasing means housing, said input opening of said fluid channel is connected to said piston and biasing means housing, piston means located in said piston and biasing means housing, said piston means being movable between an open and closed position, said piston means sealing the input opening of said fluid channel from said input side of said valve assembly housing when said piston means is in said closed position, said piston means having a top surface forming a part of said valve assembly housing input side, said top surface being flat except for at least one raised portion, said raised portion being adapted to contact the output end of a syringe, said piston means is adapted to be displaced into said open position when a syringe is connected to the input side of said valve assembly housing, thereby permitting fluid connection between said output end of said syringe and the input opening of said fluid channel, the input side of said valve assembly housing having a sealing means for forming a seal between said input side of said valve assembly housing and said output end of said syringe, and biasing means located in said piston and biasing means housing for biasing said piston means in said closed position.