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Introducing needle for vessels and introducing needle components

A technology for introducing needles and components, which is applied in the direction of guiding needles, instruments introduced into the body, catheters, etc., and can solve the problems of blocking the needle tip opening of the backflow groove, slowing blood backflow, and being expensive

Active Publication Date: 2008-01-30
BECTON DICKINSON & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, existing introducer needles with reflow grooves and ferrules are relatively expensive to manufacture because a separate step is required to mount the ferrule to the introducer needle
In addition to the disadvantage of cost, there are two other problems
One potential problem is that during the bonding process of the introduction needle to the introduction needle seat, adhesive is required to bond the introduction needle to the introduction needle seat, and the adhesive may block the reflow groove or tip opening
Another potential problem is that the ferrule inevitably reduces the size of the annular space between the lumen of the catheter and the introduction needle, and this reduction undesirably slows or even slows the return of blood observed in the return groove. no reflow at all

Method used

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  • Introducing needle for vessels and introducing needle components
  • Introducing needle for vessels and introducing needle components
  • Introducing needle for vessels and introducing needle components

Examples

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Embodiment Construction

[0022] best practice

[0023] In this document, the terms "proximal" and "distal" are used to describe the position on the introducer needle relative to the medical practitioner at the state where the needle tip of the introducer needle is farthest from the medical practitioner using the catheter and introducer needle assembly And said.

[0024] Figure 1 schematically shows a portion of a catheter and introducer needle assembly with an introducer needle according to an embodiment of the present invention. In Figure 1 a catheter and introducer needle assembly has been inserted into a patient's blood vessel. As shown in FIG. 1 , the catheter 2 is sleeved on the outside of the introduction needle 1 . The catheter is made of transparent or at least translucent material. The introduction needle 1 has a groove 3 and a pressing protrusion 4 for observing blood backflow, and in an embodiment, the groove 3 is closer to the tip of the introducing needle than the pressing protrusion. ...

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Abstract

The present invention provides a leading needle to be used for a guide pipe and a leading needle component, which is characterized in that a groove and a squeezing uplift are arranged on the leading needle. Compared with the traditional raised leading needles with the iron ring structure, the leading needle of the present invention has cheaper production and optimized blood reflux.

Description

technical field [0001] The present invention relates to an introducer needle for a catheter and introducer needle assembly, the introducer needle being provided with a groove. Background technique [0002] Intravascular catheters, especially intravenous catheters, are usually used to infuse fluids, such as common saline solutions, various drugs, and nutritional injections, etc., to patients, or to draw blood from patients. Peripheral venous catheters are usually short, measuring two inches or less. The most common type of catheter is a peripheral IV catheter over an introducer needle. This over-the-needle peripheral venous catheter is assembled on an introducer needle with a sharpened tip. The catheter and the introduction needle are assembled such that the needle tip of the introduction needle extends beyond the needle tip of the catheter and the inclined surface of the needle tip portion of the introduction needle faces upward. [0003] The catheter and introducer needl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/32A61M5/158A61M25/06
CPCA61M25/065A61M25/0693
Inventor 云财明
Owner BECTON DICKINSON & CO
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