Vascular access device with air-tight blood containment capability
First Claim
1. A vascular access device comprising:
- a hollow thin-walled metal tube having distal and proximal ends, and having an opening at the tube'"'"'s distal end, and further having a lumen extending freely from the opening at the tube'"'"'s distal end to the tube'"'"'s proximal end; and
,a transparent viewing section having distal and proximal ends, the distal end of the viewing section forming a first pressure tight seal with the metal tube'"'"'s proximal end and having an interior lumen which is in fluid communication with the lumen of the metal tube, guide wire access means forming a portion of said transparent viewing section and having a second pressure tight seal at the viewing section'"'"'s proximal end thereby forming an enclosed fixed volume non-venting chamber within the viewing section so as to contain any blood that enters into the opening at the tube'"'"'s distal end, the blood being contained within the metal tube and viewing section, and the guide wire access means being adapted to allow passage of a guide wire through the viewing section and into the metal tube, the guide wire access means being further adapted to provide said second pressure tight seal to prevent free release of the blood prior to insertion of the guide wire through the guide wire access means.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention is a means for accessing blood vessels for the insertion of a guide wire while preventing the free release of blood. Specifically, a hollow, thin-walled metal tube typically having a sharp point at its distal end is joined at its proximal end to a transparent viewing section. The viewing section has a distal narrow lumen and a proximal chamber which has a cap at its proximal end. The cap encloses a pressure sealing means through which a guide wire can be passed. After the distal end of the metal tube is placed in an artery, blood will rush through the metal tube and into the viewing section. The air in the air-tight proximal chamber will alternatively be compressed between diastolic and systolic blood pressure. Feedback to the operator that the distal end of the metal tube is properly placed within an artery can be achieved by observing the reciprocating pulsatile motion of the blood column within the distal narrow lumen of the viewing section. When the proper pulsatile motion is observed, a guide wire can be passed through the sealing means in the cap, through the viewing section, through the metal tube and finally the guide wire will enter the lumen of the artery.
-
Citations
24 Claims
-
1. A vascular access device comprising:
-
a hollow thin-walled metal tube having distal and proximal ends, and having an opening at the tube'"'"'s distal end, and further having a lumen extending freely from the opening at the tube'"'"'s distal end to the tube'"'"'s proximal end; and
,a transparent viewing section having distal and proximal ends, the distal end of the viewing section forming a first pressure tight seal with the metal tube'"'"'s proximal end and having an interior lumen which is in fluid communication with the lumen of the metal tube, guide wire access means forming a portion of said transparent viewing section and having a second pressure tight seal at the viewing section'"'"'s proximal end thereby forming an enclosed fixed volume non-venting chamber within the viewing section so as to contain any blood that enters into the opening at the tube'"'"'s distal end, the blood being contained within the metal tube and viewing section, and the guide wire access means being adapted to allow passage of a guide wire through the viewing section and into the metal tube, the guide wire access means being further adapted to provide said second pressure tight seal to prevent free release of the blood prior to insertion of the guide wire through the guide wire access means. - View Dependent Claims (2)
-
-
3. A vascular access device comprising:
-
a hollow thin-walled metal tube having distal and proximal ends and having a central lumen extending freely from the tube'"'"'s distal end to the tube'"'"'s proximal end and further having an opening at the tube'"'"'s distal end; a transparent viewing section having distal and proximal ends, the distal end of said viewing section forming a pressure tight seal with the metal tube'"'"'s proximal end, the viewing section having a first, smaller diameter elongated distal lumen which is in fluid communication with the metal tube'"'"'s lumen, said viewing section also having a second, larger proximal diameter lumen forming a proximal chamber extending into the viewing cylinder'"'"'s first lumen, said second lumen being in fluid communication with said first lumen; and
,a separate end cap removeably connected to the viewing cylinder'"'"'s proximal end, the end cap incorporating an air-tight eleastomer valve within a central lumen of said end cap which central lumen is designed for the passage of a guide wire, which guide wire is adapted to pass through the elastomer valve as the guide wire is advanced through the end cap and into the viewing section. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
-
-
11. A vascular access device insertable into a blood vessel for allowing observation of a pulsating column of blood therein and providing insertion therethrough of a medical instrument into said blood vessel, comprising:
-
(a) a thin-walled metal tube having a lumen passing therethrough from a distal end to a proximal end thereof; (b) a transparent viewing member having first and second sections in fluid communication with each other, said first section of said transparent viewing member having distal and proximal ends and being secured to said thin-walled metal tube and having a first section lumen extending therethrough in fluid communication with said lumen of said thin-walled metal tube, said second section of said transparent viewing member defining a pressure responsive chamber, said pressure responsive chamber forming a non-venting enclosure for containing pressurized air whereby said air pressure varies between systolic and diastolic pressures of said pulsating column of blood; and
,(c) an elastomer valve that allows insertion of said medical instrument into said pressure responsive chamber, said pressure responsive chamber having a proximal end section and a distal end section, said elastomer valve being secured to said proximal end section of said pressure responsive chamber in fluid tight relation therewith for preventing egress of said pressurized air contained within said pressure responsive chamber prior to insertion therethrough of said medical instrument. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A collection of devices for accessing both the femoral artery and the femoral vein in order to place sheaths or guide wires into each of these blood vessels, the collection of devices being in the form of a single package or kit consisting of;
-
(1) a vascular access device having distal and proximal ends, an opening at its distal end and a fixed volume interior chamber in the form of a transparent viewing section which has a central lumen and being capable of determining that the opening at its distal end has been properly situated within the lumen of an artery by observation of a reciprocating pulsatile column of arterial blood within the central lumen of the transparent viewing section of the vascular device; (2) an end cap that is capable of being removeably connected to the proximal end of the vascular device the end cap forming a pressure tight seal and an access means for a guide wire; and
,(3) a guide wire or sheath for insertion into the lumen of the femoral vein or the femoral artery. - View Dependent Claims (22, 23, 24)
-
Specification