초록 ▼

An internally sterile pulsatile infusor system comprises an elastic reservoir or bulb connected to a closed, sterile source of a liquid infusion solution. A check valve is connected between the source and bulb to prevent reflux of the solution therepast and a reciprocating piston is arranged to inte

An internally sterile pulsatile infusor system comprises an elastic reservoir or bulb connected to a closed, sterile source of a liquid infusion solution. A check valve is connected between the source and bulb to prevent reflux of the solution therepast and a reciprocating piston is arranged to intermittently compress the bulb to create a pulsating discharge of solution through a cannula. In the preferred embodiment of this invention, controls are provided to vary the rate of compressions of the bulb and to also modulate the force of the pulsating discharge through the cannula. The pulsatile infusor system is useful in many areas in the fields of medicine and surgery, including extracapsular cataract extraction and intravenous infusion procedures wherein bloodclots and like blockages must be removed from the cannula.

대표청구항 ▼

An internally sterile pulsatile infusor system comprising a closed, sterile source of a liquid infusion solution, a conduit having its first end connected to said source to receive said solution therefrom, a cannula connected to a second end of said conduit, elastic reservoir means connected in said

An internally sterile pulsatile infusor system comprising a closed, sterile source of a liquid infusion solution, a conduit having its first end connected to said source to receive said solution therefrom, a cannula connected to a second end of said conduit, elastic reservoir means connected in said conduit for receiving and communicating said solution to said cannula, check valve means in said conduit for continuously permitting solution flow only from said source to said elastic reservoir means and for preventing reflux of said solution therepast, compression means for intermittently compressing said elastic reservoir means to create a series of pulsating discharges of said solution through said cannula and rate control means for selectively varying the rate of compression of said compression means, said rate control means including variable means for varying the rate of said compressions within the approximate range of from 0 to 10 compressions per second.