Spray devices having side-by-side spray tips for dispensing two fluids that chemically react together

Patent metadata

Field	Value
Publication number	US-11358165-B2
Application number	US-201916593799-A
Country	US
Kind code	B2
Filing date	Oct 4, 2019
Priority date	Oct 4, 2019
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A spray device includes a first spray tip having a first fluid pathway defining a first flow area, and a second spray tip includes a second fluid pathway that defines a second flow area that is larger than the first flow area of the first spray tip. The first and second spray tips are side-by-side and spaced from one another at a distal end of the spray device. When a first fluid having a volumetric flow rate is introduced into the first spray tip and a second fluid having the same volumetric flow rate is introduced into the second spray tip, the first fluid will flow through the first fluid pathway at a greater velocity than the second fluid will flow through the second fluid pathway.

First claim

What is claimed is:

1. A spray device comprising:
a first syringe containing a higher viscosity fluid;
a second syringe containing a lower viscosity fluid that reacts with the higher viscosity fluid;
a first spray tip for spraying the higher viscosity fluid, wherein said first spray tip is in fluid communication with said first syringe and includes a first fluid pathway that defines a first flow area;
a second spray tip for spraying the lower viscosity fluid, wherein said second spray tip is in fluid communication with said second syringe and includes a second fluid pathway that defines a second flow area that is larger than the first flow area of said first spray tip;
said first and second spray tips being side-by-side and spaced from one another at a distal end of said spray device.

2. The spray device as claimed in claim 1 , wherein when a higher viscosity fluid is directed into said first spray tip at a volumetric flow rate and the lower viscosity fluid is directed into said second spray tip at the same volumetric flow rate that is used for the higher viscosity fluid, the higher viscosity fluid will flow through the first fluid pathway of said first spray tip at a greater velocity than the lower viscosity fluid will flow through the second fluid pathway of said second spray tip.

3. The spray device as claimed in claim 2 , further comprising::
a first one-way check valve disposed between a distal end of said first syringe and a proximal end of said first spray tip for allowing the higher viscosity fluid to flow in only one direction toward the distal end of said spray device;
a second one-way check valve disposed between a distal end of said second syringe and a proximal end of said second spray tip for allowing the lower viscosity fluid to flow in only one direction toward the distal end of said spray device.

4. The spray device as claimed in claim 3 , further comprising::
a first pressure control valve disposed between the distal end of said first syringe and the proximal end of said first spray tip, wherein said first pressure control valve opens when the higher viscosity fluid reaches a first predetermined pressure level;
a second pressure control valve disposed between the distal end of said second syringe and the proximal end of said second spray tip, wherein said second pressure control valve opens when the lower viscosity fluid reaches a second predetermined pressure level.

5. The spray device as claimed in claim 3 , further comprising:
a first pressure control valve disposed between the distal end of said first syringe and the proximal end of said first spray tip;
a second pressure control valve disposed between the distal end of said second syringe and the proximal end of said second spray tip, wherein said first and second pressure control valves are coupled together for simultaneously moving between an open position and a closed position.

6. The spray device as claimed in claim 1 , wherein the higher viscosity fluid comprises Fibrinogen and the lower viscosity fluid comprises Thrombin that chemically reacts with the Fibrinogen after being sprayed from distal ends of said respective first and second spray tips for forming a tissue sealant.

7. A spray device comprising:
a first spray tip including a first spray housing and a first orifice cup assembled with a distal end of said first spray housing, wherein said first orifice cup has a distal end wall with an inner face having a first fluid pathway formed therein that defines a first flow area;
a second spray tip including a second spray housing and a second orifice cup assembled with a distal end of said second spray housing, wherein said second orifice cup has a distal end wall with an inner face having a second fluid pathway formed therein that defines a second flow area that is larger than the first flow area of said first orifice cup;
said first and second spray tips being side by side and spaced from one another at a distal end of said spray device;
a first syringe containing a higher viscosity fluid that is in fluid communication with said first spray tip;
a second syringe containing a lower viscosity fluid that is in fluid communication with said second spray tip and that is adapted to chemically react with the higher viscosity fluid after being sprayed from distal ends of said respective first and second spray tips;
wherein the higher viscosity fluid is directed into said first spray tip at a volumetric flow rate and the lower viscosity fluid is directed into said second spray tip at the same volumetric flow rate that is used for the higher viscosity fluid, the higher viscosity fluid will flow through the first fluid pathway of said first orifice cup at a greater velocity than the lower viscosity fluid will flow through the second fluid pathway of said second orifice cup.

8. The spray device as claimed in claim 7 , further comprising:
wherein the first fluid pathway formed in the inner face of said distal end wall of said first orifice cup comprises a first swirl chamber having an outer perimeter and flutes having inner ends that direct the higher viscosity fluid into the outer perimeter of said first swirl chamber for rotating the higher viscosity fluid in a circular pattern within said first swirl chamber;
wherein the second fluid pathway formed in the inner face of said distal end wall of said second orifice cup comprises a second swirl chamber having an outer perimeter and flutes having inner ends that direct the lower viscosity fluid into the outer perimeter of said second swirl chamber for rotating the lower viscosity fluid in a circular pattern within said second swirl chamber; and
wherein the inner ends of said flutes that direct the first fluid into the outer perimeter of said first swirl chamber define a first cross-sectional area and the inner ends of said flutes that direct the second fluid into the outer perimeter of said second swirl chamber define a second cross-sectional area that is at least twice as large as the first cross-sectional area of said flutes of the first fluid pathway.

Assignees

• Ethicon Inc

Inventors

• Trezza Ii Michael J
• Ghodbane Salim A
• Cohn Simon

Classifications

• B05B7/0846 Primary

  with jets being only jets constituted by a liquid or a mixture containing a liquid · CPC title

• A61M11/007 Primary

  Syringe-type or piston-type sprayers or atomisers · CPC title

• B05B11/02

  Membranes or pistons acting on the contents inside the container, e.g. follower pistons · CPC title

• B05B11/0078

  Arrangements for separately storing several components (arrangements for pumping several liquids or other fluent materials from several containers B05B11/1081) · CPC title

• B05B11/007

  being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves · CPC title