초록 ▼

Methods for preventing needle-stick injuries to healthcare workers during intravenous or intra-arterial procedures as well as for preventing catheter-contamination and blood clotting within the tip of the catheter. Also, novel fluid directing means and catheters which include integral fluid flow con

Methods for preventing needle-stick injuries to healthcare workers during intravenous or intra-arterial procedures as well as for preventing catheter-contamination and blood clotting within the tip of the catheter. Also, novel fluid directing means and catheters which include integral fluid flow control means for use in these methods.

대표청구항 ▼

A method for preventing needle-stick injuries when catheter means is introduced into or withdrawn from the vascular system of a patient during intravenous or intraarterial procedures as well as during disposal, storage or transportation of the catheter means which comprises: providing a catheter mea

A method for preventing needle-stick injuries when catheter means is introduced into or withdrawn from the vascular system of a patient during intravenous or intraarterial procedures as well as during disposal, storage or transportation of the catheter means which comprises: providing a catheter means having fluid flow control means and needle-enveloping means, said fluid flow control means comprising: a tubular structure including input means and output means, each provided with an open bore constituting a flow channel; valve means located between the bores of said input and output means of said tubular structure and having an open and closed position, said valve means providing for a connecting channel between said bores when said further means is in the open position, said further means normally being prestressed to said closed position and being forcible to said open position in response to a positive fluid pressure in the bore of either of said input or output means, said valve means being constructed and arranged so as to return to said closed position in response to a removal of said positive fluid pressure from said bore containing same; said needle-enveloping means including obturating means inserted into said tubular structure so as to render said valve means incompetent, needle means inserted into said obturating means, and receptacle means releasably securable to one end of said needle means; introducing the catheter means having said inserted obturating means and needle means into an organ or pleural cavity of a patient for removal of fluids therefrom; retracting the needle means within the overlying obturating means so that the obturating means envelops said needle means; and withdrawing simultaneously the retracted needle means and said obturating means with the needle means unexposed from within the tubular structure so that only said tubular structure remains in the organ or pleural cavity of said patient and said valve means remains competent in response to fluid reflux.