US 10,207,055 B2 · Nozzle for use in an ultra-high velocity injection device

Abstract

An exemplary embodiment of the invention is a nozzle, for use in an injection device, that projects material at an ultra-high velocity. The nozzle includes an integrally formed body having an interior passageway that has a longitudinal axis. The input of the nozzle is configured to interface with a cartridge, and the output is configured to be placed proximate to a target. The passageway includes a taper, and its path length, from an initial diameter to a position along the passageway where the passageway first reaches a smallest diameter, is at least 0.5 mm. The taper of the passageway defines a shape, in a plane that includes the longitudinal axis, that is a continuous and monotonically decreasing function of distance along the longitudinal axis in a direction of flow through the nozzle.

Claims20

Dependent claims

A method of forming a micro beam of injectate, the method comprising:

forcing the injectate through a passageway within a nozzle having a longitudinal axis and an exit orifice that is less than about 300 μm in diameter and located at a point where the passageway achieves its smallest diameter, to produce an axial flow of injectate at the exit orifice of at least about 100 m/s;
and while forcing the injectate through the passageway within the nozzle, constricting the cross-sectional area of the flow of the injectate in a smooth and continuous manner as the injectate moves toward the exit orifice, so as to produce the micro beam of injectate and to produce, at the exit orifice, flow of injectate characterized by a radial velocity component that is less than about 50% of an axial velocity component.

Dependencies are inferred from the claim text.

Facts

Application

15/819,296Filed 21 Nov 2017 · division

Priority

30 Jun 2014

Published

US 2018/0078704 A122 Mar 2018

Granted

19 Feb 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

A61M 5/3007
Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules: with specially designed jet passages at…
A61M 5/30
Syringes: syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
B05B 1/02
Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means: designed to produce a jet, spray, or other…
A61M
Devices for delivering substances into the body

Family

Application62/018,809Us provisional application · filed 30 Jun 2014

Application14/788,001Parent of this division · filed 30 Jun 2015

US 2018/0078704 A1Pre-grant publication · published 22 Mar 2018

US 10,159,793 B2Related patent

US 2015/0374921 A1Published application

US 10,207,055 B2This patent

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

Nozzle for use in an ultra-high velocity injection device

Life of this patent

Nozzle for use in an ultra-high velocity injection device

Life of this patent

Abstract

Claims20