US 7,077,830 B2Granted

Medical syringe needle

AssigneeNipro Corporation

InventorsYoshio Higaki, Kenji Yashiro, Mitsuo Murakami, Toshio Tochiyama

Life of this patent

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Abstract

A needle for medical use, which is free from breakage of a cannula even if subjected to reapeated bending operations or puncture into the root of teeth in use. The needle is charactrized in that a cannula (2) is fixed to a hub (1) by charging a bonding adhesive in an adhesive-filling portion (11) provided in a distal end of the hub (1) so that a root (21) of the cannula (2) is located below the distal end (121) of the hub (1). The distal end of the hub (1) may be formed into a configuration provided with an annular rib (12) extending axially and surrounding the adhesive-filling portion (11).

Claims18

Dependent claims

A needle for medical use comprising:

a hub;
an adhesive-filling portion provided in a distal portion of the hub;
and
a bonding adhesive charged into a proximal portion of the adhesive-filling portion while leaving a distal portion of the adhesive-filling portion uncharged, an exposed surface of the bonding adhesive being located inside the adhesive-filling portion of the hub and being separated from a distal end of the hub by a predetermined distance;
a cannula having a small diameter and a thin wall, said cannula having a central portion that is fixed to the hub by the bonding adhesive, a root located at the exposed surface of the bonding adhesive, and an exposed distal portion beginning at the root and extending in the distal direction from the exposed surface of the bonding adhesive, the exposed distal portion being easily bendable.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/239,162Filed 12 Mar 2001
Priority: JP 2000-07940322 Mar 2000
Published: US 2003/0045839 A16 Mar 2003
Granted: 18 Jul 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

A61M 5/343
Constructions for connecting the needle , e.g. to syringe nozzle or needle hub: connection of needle cannula to needle hub, or directly to syringe…
A61M 5/349
Constructions for connecting the needle , e.g. to syringe nozzle or needle hub: using adhesive bond or glues
A61M 2005/341
Constructions for connecting the needle , e.g. to syringe nozzle or needle hub: angularly adjustable or angled away from the axis of the injector
A61M
Devices for delivering substances into the body

Family

US 2003/0045839 A1Pre-grant publication · published 6 Mar 2003
US 7,077,830 B2This patent

From the US filing history. Foreign family members aren’t listed.

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