초록 ▼

The suction injecting unit comprises a tubular housing adapted for receiving a disposable container for receiving the medicine to be administered, and having at one end a socket for exchangeably supporting a cannula and a removable suction cup, and at the other end a piston combined with a dosing me

The suction injecting unit comprises a tubular housing adapted for receiving a disposable container for receiving the medicine to be administered, and having at one end a socket for exchangeably supporting a cannula and a removable suction cup, and at the other end a piston combined with a dosing mechanism that allows only a preset stroke of the piston. A suction apparatus controlled preferably by a pressurized gas is attached to the housing and is provided with control valves to successively establish an underpressure in the suction cup, and to maintain the underpressure in the cup while moving the piston about a predetermined stroke.

대표청구항 ▼

A suction injector having a dosing mechanism, comprising a tubular container for storing a multiple dose of a liquid medicine; a piston arranged for movement in said container; an exchangeable cannula connected to one end of said container; a container housing adapted for accommodating said containe

A suction injector having a dosing mechanism, comprising a tubular container for storing a multiple dose of a liquid medicine; a piston arranged for movement in said container; an exchangeable cannula connected to one end of said container; a container housing adapted for accommodating said container; a suction cup attached to one end portion of said container housing to pull up the skin of a patient against said cannula; an underpressure generator including a pressure gas container and a pump connected to said suction cup, said under-pressure generator being attached to said container housing and communicating with said suction cup; pressure controlling means having a control valve and disposed between said suction cup and said underpressure generator to control the pressure conditions in said suction cup; a non-return valve coupled between said under-pressure generator and said suction cup to maintain under-pressure in said cup when the suction from said pump is interrupted; and a dosing mechanism arranged on said container housing and coupled to said piston in said container to permit an incremental movement of the piston toward said cannula, the end of said container housing opposite said cannula being hermetically sealed by a closure cap and the space resulting between the cap and the upper surface of said piston communicating through said control valve with said pressure gas container in said under pressure generator to move said piston about a predetermined increment.