Pressure container for driving a medical device

Patent metadata

Field	Value
Publication number	US-10842939-B2
Application number	US-201615571691-A
Country	US
Kind code	B2
Filing date	May 6, 2016
Priority date	May 8, 2015
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

The present disclosure relates to a portable pressure container for driving a medical device. The container includes a pressure housing confining an interior volume and a pressure outlet extending through the pressure housing. The interior volume comprises a liquid storage portion and a gas storage portion. The liquid storage portion and the gas storage portion are in flow connection with each other. The liquid storage portion is configured to store a liquid phase of a driving medium. The gas storage portion is configured to store a gas phase of the driving medium. The pressure outlet is only in flow connection with the gas storage portion.

First claim

The invention claimed is:

1. A portable pressure container for driving a medical device, the container comprising:
a pressure housing confining an interior volume,
a pressure outlet extending through the pressure housing,
wherein the interior volume comprises a liquid storage portion and a gas storage portion, wherein the liquid storage portion and the gas storage portion are in flow connection with each other,
wherein the liquid storage portion is configured to store a liquid phase of a driving medium and wherein the gas storage portion is configured to store a gas phase of the driving medium,
wherein the pressure outlet is only in direct flow connection with the gas storage portion,
wherein the liquid storage portion is located remote and at a predefined non-zero distance from the pressure outlet and wherein the gas storage portion is located between the liquid storage portion and the pressure outlet, and
wherein a porous storage medium or a porous transport medium is arranged inside the liquid storage portion and extends towards or into the gas storage portion.

2. The pressure container according to claim 1 , wherein the porous storage medium is in abutment with an inner side of the pressure housing.

3. The pressure container according to claim 1 , wherein the porous storage medium and the pressure outlet are arranged in opposite end sections of the pressure housing.

4. The pressure container according to claim 1 , wherein the porous storage medium is arranged on a bottom portion of the pressure housing and is held in place or squeezed by a perforated grid.

5. The pressure container according to claim 1 , wherein the pressure outlet is located in an outlet member releasably engageable with the pressure housing.

6. The pressure container according to claim 5 , wherein the outlet member comprises a side wall threadedly engageable with a correspondingly threaded side wall portion of the pressure housing to exert a squeezing pressure onto the porous storage medium.

7. The pressure container according to claim 1 , wherein the porous storage medium extends along a bottom portion and along a sidewall portion of the pressure housing.

8. The pressure container according to claim 1 , wherein the porous storage medium comprises a self-supporting elongated rod structure fixed with one longitudinal end to the pressure housing and extending with an opposite longitudinal end into.

9. The pressure container according to claim 1 , wherein the porous storage medium or porous transport medium comprises at least one of a cotton wool, a sponge material, a porous wick material or combinations thereof.

10. The pressure container according to claim 1 , further comprising a fluid channel in flow connection with the pressure outlet and extending from a sidewall portion of the pressure housing into the interior volume but terminating with an inner end in the gas storage portion.

11. The pressure container according to claim 10 , wherein the inner end of the fluid channel is covered with a splash guard and wherein the fluid channel has at least one inlet opening in a sidewall portion.

12. The pressure container according to claim 1 , wherein the liquid storage portion is at least partially filled by a liquid phase of the driving medium.

13. The pressure container according to claim 1 , wherein the interior volume of the pressure housing is divided between the liquid storage portion and the gas storage portion.

14. The pressure container according to claim 1 , wherein the driving medium is disposed in the interior volume of the pressure housing, wherein the liquid storage portion is completely filled by the liquid phase of the driving medium and wherein the gas storage portion is completely filled by the gas phase of the driving medium.

15. A pressure driven portable medical device comprising a pressure driven drive mechanism and comprising at least one pressure container, the pressure container comprising:
a pressure housing confining an interior volume,
a pressure outlet extending through the pressure housing,
wherein the interior volume comprises a liquid storage portion and a gas storage portion, wherein the liquid storage portion and the gas storage portion are in flow connection with each other,
wherein the liquid storage portion is configured to store a liquid phase of a driving medium and wherein the gas storage portion is configured to store a gas phase of the driving medium,
wherein the pressure outlet is only in direct flow connection with the gas storage portion,
wherein the liquid storage portion is located remote and at a predefined non-zero distance from the pressure outlet and wherein the gas storage portion is located between the liquid storage portion and the pressure outlet, and
wherein a porous storage medium or a porous transport medium is arranged inside the liquid storage portion and extends towards or into the gas storage portion.

Assignees

• Sanofi Aventis Deutschland

Inventors

• Nessel Christian
• Dexheimer Christian
• Uth Tobias
• Hammen Florian

Classifications

• F04B9/12

  the fluid being elastic, e.g. steam or air · CPC title

• A61M5/155

  pressurised by gas {introduced into the reservoir} · CPC title

• A61M2005/14513

  with secondary fluid driving or regulating the infusion · CPC title

• A61M5/2053

  Media being expelled from injector by pressurised fluid or vacuum (for infusion A61M5/145, A61M5/155) · CPC title

• A61M5/14276

  specially adapted for implantation · CPC title