Occludable introducer needle
AssigneeMedical Components, Inc.
InventorsJ. Daniel Raulerson, Mark S. Fisher
Life of this patent
Estimating the term…
Abstract
An introducer needle assembly including a compressible section between the rigid needle and the hub. Once the vessel is entered as determined by blood entering the syringe, the compressible section of the introducer needed is occluded by compressing the section with the thumb and a finger. Neither blood for air can pass. Since the compressible section is in a flattened area it is easier to hold the needle while the syringe is unscrewed. The operator then can begin threading a guidewire down the divide which is now easier to enter because blood is not coming out of the hub thus obscuring the lumen.
Claims19
-18. (canceled)
A method of inserting a needle into a blood vessel comprising the steps of:
- providing an introducer needle assembly comprising
- a hollow needle with a needle passage extending from a needle distal end to a needle proximal end,
- a hub extending from a hub distal end to a hub proximal end with the hub distal end secured to the needle proximal end, the hub including a needle connector at the hub distal end and a device connector at the hub proximal end with a pair of spaced apart rails interconnecting the needle connector and the device connector with a hollow space defined between the rails;
- a first passage defined from the needle connector extending proximally of the needle connector thereof, the first passage in communication with the needle passage, and a second passage extending from the device connector extending distally of the device connector thereof;
- and
- a compressible member having a tubular body having a third passage extending between the ends thereof, a continuous passage is defined through the second passage, the third passage, the first passage and the needle passage and wherein the third passage has an inner diameter equal to or less than an inner diameter at a the proximal end of the first passage;
- wherein the tubular body has opposed sides with indentations defined therein;
- and wherein the indentations can be compressed to occlude the third passage to block fluid communication
- inserting the needle into a blood vessel;
- compressing the compressible member to occlude the third passage after blood enters a syringe attached to the device connector;
- removing the syringe from the device connector;
- and
- inserting a guide wire through the second passage, the third passage, the first passage and the needle passage and into the blood vessel.
Dependencies are inferred from the claim text.