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Flashing flow blood collecting needle

A technology of fluid and needle components, which is applied in the field of needle components for multiple sample blood collection, and can solve the problems of discarding test tubes caused by blood collection sets

Active Publication Date: 2015-05-13
BECTON DICKINSON & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such cases, the phlebotomist can use the blood collection set to provide some kind of access indication, which incurs the cost of the blood collection set, and the cost of discarding the tube

Method used

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  • Flashing flow blood collecting needle
  • Flashing flow blood collecting needle
  • Flashing flow blood collecting needle

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] The present invention provides a needle assembly for blood collection that provides a visual indication of vein entry ("flash flow") when collecting a blood or other fluid sample from a patient into one or more evacuated blood collection tubes, and Blood or other fluid samples are inhibited from escaping from the intravenous cannula when removed from the patient.

[0030] Various embodiments of the invention are shown in Figure 1-7 middle. refer to figure 1 , this embodiment relates to a needle assembly 210 having a housing 212 with a fluid inlet end 214, a fluid outlet end 216, and a frustum-shaped Exterior wall 218 . The outer wall 218 defines a housing interior 220 . The housing 212 also includes a cylindrical inner wall 224 extending generally concentrically with the cylindrical outer wall 218 to the vent plug 900 within the housing interior 220 . The cylindrical inner wall 224 and the vent plug 900 define a flashover chamber 226 .

[0031]Needle assembly 210...

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PUM

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Abstract

The invention discloses a needle component which comprises a transparent or semi-transparent shell. The shell comprises a fluid inlet end portion, a fluid outlet end portion, a flashing flow cavity and an aerating mechanism. The aerating mechanism is arranged among the fluid inlet end portion, the fluid outlet end portion and the flashing flow cavity. An inlet sleeve and an outlet sleeve which are approximately axially aligned extend from the shell and are communicated with the cavity. A sealable sleeve covers the outer end portion of the outlet sleeve. The relative volumes of the sleeves, the cavity and the sealable sleeve are selected to provide rapid and reliable flashing flow indications for intravenous routes. An internal aerating element is positioned in the shell to enable the inner portion to be divided into a first cavity and a second cavity. The second cavity is suitable for keeping negative pressure inside relative to an external environment so as to prevent blood from leaking from a needle when the needle is withdrawn from a patient.

Description

[0001] This invention is a divisional application of an invention patent application with an international filing date of March 7, 2008, an international application number of PCT / US2008 / 056256, a Chinese national application number of 200880128767.5, and an invention title of "Flash Blood Collection Needle". technical field [0002] The present invention relates to a device for collecting a blood sample by venipuncture of a patient. More particularly, the present invention relates to a needle assembly for multiple sample blood collection that enables a phlebotomist to determine whether venous access has occurred when collecting a blood sample from a patient into an evacuated blood collection tube . Background technique [0003] Venipuncture is the basic method used to obtain blood samples for laboratory testing. There are several steps that the phlebotomist must follow simultaneously while performing the venipuncture procedure. These steps include an assessment of the pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/153
Inventor C·L·A·谭J·莫S·西姆
Owner BECTON DICKINSON & CO
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