Method and nozzle for mixing and spraying fluids

Patent metadata

Field	Value
Publication number	US-10589299-B2
Application number	US-201514623035-A
Country	US
Kind code	B2
Filing date	Feb 16, 2015
Priority date	Feb 17, 2014
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

Abstract

The invention relates to a method for mixing at least two fluids using an externally mixing nozzle for medical purposes, which has at least two outlet channels ( 10, 20 ) and at least two inlet openings ( 13, 23 ) with different or identical cross-sections, wherein two fluids with different volumetric flows and/or different viscosity are sprayed, and wherein the ratio of the cross-sections of the inlet channels ( 13, 23 ) and/or the outlet channels ( 10, 20 ) corresponds to the ratio of the volumetric flows so that the fluids flow with substantially identical flow speeds through the outlet channels ( 10, 20 ) and/or the inlet openings ( 13, 23 ). The invention furthermore relates to an externally mixing nozzle, a medical instrument and a medical device for spraying substances, in particular biological material.

First claim

What is claimed is:

1. An apparatus for the supply of substances, the apparatus comprising an externally mixing nozzle comprising:
a first outlet channel and a second outlet channel, which are arranged spaced apart from one another in such a manner that fluid cones exiting from the first and second outlet channels for the mixing of fluids at least partially overlap,
wherein the first outlet channel is fluid-connected to a first cylindrical vortex chamber, and the second outlet channel is fluid-connected to a second cylindrical vortex chamber, and a first supply channel is configured to discharge laterally into the first cylindrical vortex chamber, and a second supply channel is configured to discharge laterally into the second cylindrical vortex chamber;
wherein the fluids entering the first and second cylindrical vortex chambers via the respective first and second supply channels are directed transversely with respect to the respective fluids exiting the first and second cylindrical vortex chambers via the respective first and second outlet channels to induce a fluid vortex within each of the first and second cylindrical vortex chambers,
wherein at least one third supply channel is provided which discharges a liquid containing biologic material including biological cells for mixing with the fluids supplied by the first and second supply channels, wherein the third supply channel discharges the liquid containing biologic material directly into a third outlet channel that is arranged between the first and second outlet channels such that the liquid containing biologic material is released into the fluid cones exiting from the first and second outlet channels, so that the liquid containing biologic material is subject to lower shear forces than the fluids supplied by the first and second supply channels to protect the biological cells in the liquid, and
wherein the first and second cylindrical vortex chambers each have a cross-sectional area in a plane perpendicular to a central axis of the corresponding cylindrical vortex chamber and the first and second supply channels each have a cross-sectional area in a plane perpendicular to a central axis of the corresponding supply channel, and the cross-sectional area of the first cylindrical vortex chamber is greater than the cross-sectional area of the first supply channel, and the cross-sectional area of the second cylindrical vortex chamber is greater than the cross-sectional area of second supply channel.

2. The apparatus according to claim 1 , wherein the first vortex chamber and the second vortex chamber are connected in each case to the first or second supply channel via an inlet opening, wherein the inlet opening of the first vortex chamber and the inlet opening of the second vortex chamber have different cross-sectional shapes.

3. The apparatus according to claim 1 , wherein at least the first outlet channel and the second outlet channel have longitudinal axes oriented parallel or at an angle to one another.

4. The apparatus according to claim 1 , further comprising a medical instrument having the externally mixing nozzle, wherein the instrument is configured to connect to a medical device with a control unit for setting the supply of substances to the first, second, and third supply channels.

5. The apparatus according to claim 4 , wherein the first vortex chamber and the second vortex chamber are connected in each case to the first or second supply channel via an inlet opening;
wherein the control unit is adapted for setting the supply of substances to the first, second, and third supply channels in such a manner that, with different volumetric flows and/or different viscosity of the fluids, said fluids flow with substantially identical flow speeds through the outlet channels and/or the inlet openings.

6. The apparatus according to claim 4 , wherein the control unit is adapted for setting the supply of substances to the first, second, and third supply channels in such a manner that the different fluids can be supplied independently of one another in any desired sequence.

7. The apparatus according to claim 1 , wherein the first vortex chamber and the second vortex chamber are connected in each case to the first or second supply channel via an inlet opening;
further comprising a control unit which is adapted for setting the supply of substances to the first, second, and third supply channels in such a manner that, with different volumetric flows and/or different viscosity of the fluids, said fluids flow with substantially identical flow speeds through the outlet channels and/or the inlet openings.

8. The apparatus according to claim 7 , wherein the control unit is adapted for setting the supply of substances to the first, second, and third supply channels in such a manner that the different fluids can be supplied independently of one another in any desired sequence.

9. The apparatus according to claim 1 , further comprising a control unit which is adapted for setting the supply of substances to the first, second, and third supply channels in such a manner that the different fluids can be supplied independently of one another in any desired sequence.

10. A method for mixing at least two fluids, the method comprising:
using an externally mixing nozzle, which has at least two outlet channels and at least two inlet openings with different or identical cross-sections, to mix at least two fluids, by:
conducting a first fluid via a first supply channel laterally into a first cylindrical vortex chamber which is fluid-connected to a first outlet channel,
conducting a second fluid via a second supply channel laterally into a second cylindrical vortex chamber which is fluid-connected to a second outlet channel which is spaced apart from the first outlet channel, such that the fluids entering the first and second cylindrical vortex chambers via the respective first and second supply channels are directed transversely with respect to the respective fluid exiting the first and second cylindrical vortex chambers via the respective first and second outlet channels to induce a fluid vortex within each of the first and second cylindrical vortex chambers, and
wherein the first and second cylindrical vortex chambers each have a cross-sectional area in a plane perpendicular to a central axis of the corresponding cylindrical vortex chamber and the first and second supply channels each have a cross-sectional area in a plane perpendicular to a central axis of the corresponding supply channel, and the cross-sectional area of the first cylindrical vortex chamber is greater than the cross-sectional area of the first supply channel, and the cross-sectional area of the second cylindrical vortex chamber is greater than the cross-sectional area of second supply channel,
flowing the first fluid out via the first outlet channel and the second fluid out via the second outlet channel in such a manner that overlapping fluid cones are formed,

wherein the first fluid and the second fluid have different volumetric flows and a ratio of the cross-sections of the inlet openings and/or the outlet channels corresponds to a ratio of the volumetric flows so that the first fluid and the second fluid flow with substantially identical average flow speeds through the outlet channels and/or the inlet openings, and
wherein at least one third supply channel is provided which discharges a liquid containing biologic material including biological cells for mixing with the first and second fluids, wherein the third supply channel discharges the liquid containing biologic material directly into a third outlet channel that is arranged between the first and second outlet channels such that the liquid containing biologic materia

Assignees

• Erbe Elektromedizin

Inventors

• Fech Andreas
• Fischer Klaus
• Enderle Markus

Classifications

• A61B2017/00522

  Sprayers · CPC title

• B05B7/0408 Primary

  with arrangements for mixing two or more liquids · CPC title

• A61B17/00491

  Surgical glue applicators · CPC title

• B05B7/10

  producing a swirling discharge · CPC title

• A61B2017/00495

  for two-component glue · CPC title