Pneumatic no delivery device

Patent metadata

Field	Value
Publication number	US-10953174-B2
Application number	US-201816110161-A
Country	US
Kind code	B2
Filing date	Aug 23, 2018
Priority date	Sep 19, 2017
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

The present invention concerns a pneumatic delivery device having three successively-arranged chambers, a membrane element arranged in the third chamber so as to ensure a tight separation of the third chamber into a lower chamber and upper chamber, a membrane element arranged between the second chamber and the lower chamber of the third chamber so as to ensure a tight separation between said lower chamber and second chamber, a stem integrally fixed to the first membrane element and to the second membrane element, a valve cooperating with an outlet orifice arranged between the first chamber and the second chamber, and a flow adjustment element arranged on a gas conduct in fluid communication with the gas outlet of the second chamber, said flow adjustment element being operable by a user for setting a quantity of gas circulating in said gas conduct.

First claim

What is claimed is:

1. A pneumatic delivery device ( 4 ) comprising:
a first, a second and a third successively-arranged chambers ( 45 a , 45 c , 45 o ) wherein the chambers are successively-arranged as a first chamber, then a second chamber, and then a third chamber,
a first membrane element ( 45 g ) arranged in the third chamber ( 45 o ) configured and adapted to ensure a tight separation of said third chamber ( 45 o ) into a lower chamber ( 45 f ) and upper chamber ( 45 h ),
a second membrane element ( 45 e ) arranged between the second chamber ( 45 c ) and the lower chamber ( 45 f ) of the third chamber ( 45 o ) configured and adapted to ensure a tight separation between said lower chamber ( 45 f ) and second chamber ( 45 c ),
a stem ( 45 d ) integrally fixed to the first membrane element ( 45 g ) and to the second membrane element ( 45 e ), and carrying a valve element ( 45 b ) cooperating with an outlet orifice ( 45 m ) arranged between the first chamber ( 45 a ) and the second chamber ( 45 c ) configured and adapted for controlling the passage of gas from the first chamber ( 45 a ) to the second chamber ( 45 c ) through said outlet orifice ( 45 m ),
a gas inlet ( 31 ) in fluid communication with the first chamber ( 45 a ) configured and adapted for allowing gas to penetrate into the first chamber ( 45 a ),
a gas outlet ( 45 l ) in fluid communication with the second chamber ( 45 c ) configured and adapted for allowing gas to exit the second chamber ( 45 c ),
a first pressure inlet ( 45 j ) in fluid communication with the upper chamber ( 45 h ) of the third chamber ( 45 o ),
a second pressure inlet ( 45 k ) in fluid communication with the lower chamber ( 45 f ) of the third chamber ( 45 o ), and
a flow adjustment element ( 46 ) arranged on a gas conduct ( 46 a ) in fluid communication with the gas outlet ( 45 l ) of the second chamber ( 45 c ), said flow adjustment element ( 46 ) being operable by a user for setting a quantity of gas circulating in said gas conduct ( 46 a ).

2. The pneumatic delivery device of claim 1 , wherein the valve element ( 45 b ) comprises a needle valve.

3. The pneumatic delivery device of claim 2 , wherein the valve element ( 45 b ) comprises a needle valve having a first conical shape.

4. The pneumatic delivery device of claim 3 , wherein the outlet orifice ( 45 m ) arranged between the first and second chambers ( 45 a , 45 c ) has a second conical shape fitting a first conical shape of the needle valve of the valve element ( 45 b ).

5. The pneumatic delivery device of claim 1 , wherein the flow adjustment element ( 46 ) comprises a variable orifice.

6. The pneumatic delivery device of claim 5 , wherein the flow adjustment element ( 46 ) is actuated by a dial.

7. The pneumatic delivery device of claim 1 , wherein a first diameter of the first membrane element ( 45 g ) is greater than a second diameter of the second membrane element ( 45 e ).

8. The pneumatic delivery device of claim 1 , wherein a low pressure regulator ( 44 ) is arranged upstream of the first chamber ( 45 a ).

9. The pneumatic delivery device of claim 1 , wherein the first membrane element ( 45 g ) and the second membrane element ( 45 e ) each comprise a deformable portion ( 45 g 2 , 45 e 2 ) arranged around a non-deformable lower part ( 45 g 3 , 45 e 3 ) forming a central portion of each membrane element ( 45 g , 45 e ), said non-deformable lower part ( 45 g 3 , 45 e 3 ) embedded with a rigid reinforcement element ( 45 g 4 , 45 e 4 ).

10. A resuscitation bag system ( 5 ) comprising:
a flexible insufflation bag ( 54 ) comprising an inlet conduit ( 56 ) in fluid communication with the flexible insufflation bag ( 54 ),
a Nitric Oxide (NO) injection module ( 7 ) arranged in the inlet conduit ( 56 ) and
a pneumatic device ( 4 ) according to claim 1 , fluidly connected to the NO injection module ( 72 ).

11. The resuscitation bag system ( 5 ) of claim 10 , wherein the NO injection module ( 7 ) comprises a gas injector ( 71 ) comprising a plurality of gas nozzles ( 71 a ), said gas injector ( 71 ) being arranged in the lumen ( 77 ) of a cylinder or a tubular element ( 72 ).

Assignees

• Air Liquide Sante Int
• Air Liquide

Inventors

• Boulanger Thierry

Classifications

• A61M16/0084

  self-reinflatable by elasticity, e.g. resuscitation squeeze bags · CPC title

• A61M16/207

  Membrane valves with pneumatic amplification stage, i.e. having leader and follower membranes · CPC title

• A61M2202/0208

  Oxygen · CPC title

• A61M16/12

  by mixing different gases · CPC title

• A61M16/0078 Primary

  Breathing bags · CPC title