Taking up system and process with a filter unit for the receiving of gas from a medical apparatus

Patent metadata

Field	Value
Publication number	US-11844904-B2
Application number	US-202117344724-A
Country	US
Kind code	B2
Filing date	Jun 10, 2021
Priority date	Jun 12, 2020
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

An taking up/receiving system ( 100 ) and a process for taking up/receiving of gas from a medical apparatus ( 1 ) are provided. The taking up/receiving system includes a feed line ( 6 ), a discharge line ( 8 ), a filter unit ( 4 ) with a filter and at least one buffer storage device. The feed line establishes a fluid connection between the medical apparatus and the filter unit. The discharge line establishes a fluid connection between the filter unit and a fluid taking up/receiving unit ( 7 ). The gas is discharged from the medical apparatus and is passed through the feed line to the filter unit and from there through the discharge line to the fluid taking up/receiving unit. The filter filters at least one gas component out of the gas that is passed through the filter unit. The one or more buffer storage device absorbs and again discharges gas from time to time.

First claim

What is claimed is:

1. A taking up system for the taking up of gas from a medical apparatus, the taking up system comprising:
a feed line configured to establish a fluid connection with the medical apparatus;
a discharge line configured to establish a fluid connection with a fluid taking up unit or with a surrounding area;
a filter unit comprising a filter, wherein the filter is configured to filter at least one predefined gas component out of a gas which is passed through the filter, wherein a respective fluid connection is established or is establishable between the feed line and the filter unit and between the discharge line and the filter unit; and
a buffer storage device in a respective fluid connection with the feed line and/or in a respective fluid connection with the discharge line, the buffer storage device being configured to temporarily store gas from the feed line and/or from the discharge line and later to discharge same into the feed line and/or into the discharge line, wherein the taking up in system is configured to:
guide gas out of the medical apparatus through the feed line to the filter unit;
pass the gas through the filter unit and at least partially through the filter; and
guide the gas through the discharge line to the fluid taking up unit or into the surrounding area;

the filter unit further comprises a filter mount in a fluid connection with the feed line and in a fluid connection with the discharge line;
the filter is insertable or inserted into the filter mount;
the filter unit is configured such that with the filter inserted into the filter mount, an intermediate space is formed between an impermeable surface of the filter and at least one inner wall of the filter mount; and
the intermediate space is in a fluid connection with the feed line and is in a fluid connection with the discharge line and forms the buffer storage device or forms a portion of the buffer storage device or forms all or a portion of a further buffer storage device.

2. The taking up system in accordance with claim 1 , wherein the buffer storage device is additionally in a fluid connection with the surrounding area and is configured to discharge gas into the surrounding area.

3. The taking up system in accordance with claim 1 , wherein:
the buffer storage device comprises a housing which is in a fluid connection with the filter unit; and
the housing of the buffer storage device provides an interior for the taking up of gas.

4. The taking up system in accordance with claim 1 , wherein:
the buffer storage device is arranged downstream of the filter unit with respect to a direction of flow from the feed line to the discharge line; or
the filter unit is arranged downstream from the buffer storage device with respect to a direction of flow from the feed line to the discharge line.

5. The taking up system in accordance with claim 1 , wherein:
the filter unit further comprises a plate movably arranged and fluid-tightly dividing the interior of the filter mount into a filter cavity and a buffer storage device cavity;
the filter is inserted or is insertable into the filter mount;
the filter cavity is configured to accommodate the filter;
the buffer storage device cavity forms the buffer storage device or a portion of the buffer storage device or forms a further buffer storage device; and
the buffer storage device cavity is in a fluid connection with the feed line and is in a fluid connection with the discharge line at least when no filter is inserted into the filter mount.

6. The taking up system in accordance with claim 5 , wherein:
the plate is moveable back and forth between a buffer storage device position and a park position in relation to the filter mount;
the plate is in the buffer storage device position when no filter is inserted into the filter mount; and
the plate is in the park position when a filter is inserted into the filter mount;
the feed line has at least one outlet opening;
the discharge line has at least one inlet opening;
with the plate in the buffer storage device position the at least one outlet opening connects the feed line to the buffer storage device cavity;
with the plate in the buffer storage device position the at least one inlet opening connects the discharge line to the buffer storage device cavity;
with the plate in the park position the at least one outlet opening connects the feed line to the filter cavity; and
with the plate in the park position the at least one inlet opening connects the discharge line to the filter cavity.

7. The taking up system in accordance with claim 5 , further comprising a slide arranged in the interior of the filter mount, wherein:
the slide is moveable back and forth between a buffer storage device position and a park position in relation to the filter mount;
the feed line has a filter outlet opening and a buffer storage device outlet opening;
the discharge line has a filter inlet opening and a buffer storage device inlet opening;
with the slide in the buffer storage device position, the buffer storage device outlet opening connects the feed line to the buffer storage device cavity, the buffer storage device inlet opening connects the discharge line to the buffer storage device cavity, and the slide blocks the filter outlet opening and the filter inlet opening; and
with the slide in the park position, the filter outlet opening connects the feed line to the filter cavity, the filter inlet opening connects the discharge line to the filter cavity, and the slide blocks the buffer storage device outlet opening and the buffer storage device inlet opening.

8. The taking up system in accordance with claim 7 , wherein the slide is mechanically connected to the plate.

9. The taking up system in accordance with claim 1 , wherein
the filter unit further comprises a filter sensor;
the filter unit encloses an interior and is in a fluid connection with the feed line and is in a fluid connection with the discharge line; and
the filter sensor is configured to determine whether or not the filter is inserted into the filter mount.

10. The taking up system in accordance with claim 1 , wherein
the volume of the buffer storage device is variable;
a feed of gas into the buffer storage device expands the buffer storage device; and
the expanded buffer storage device is configured to contract and as a result to discharge received gas.

11. The taking up system in accordance with claim 1 , further comprising an pressure relief valve configured to open if a difference between the pressure in the feed line and a pressure around the feed line is above a predefined overpressure threshold.

12. The taking up system in accordance with claim 11 , further comprising a fluid guide unit, wherein:
the pressure relief valve is connected to the discharge line by the fluid guide unit;
a fluid connection is established between the pressure relief valve and the fluid guide unit with the pressure relief valve open.

13. The taking up system in accordance with claim 11 , further comprising a concentration sensor configured to determine a concentration of a gas component at a measurement position downstream of the filter wherein the taking up system is configured to generate a message when the pressure relief valve is open or the concentration sensor has detected a concentration above a predefined concentration threshold.

14. The taking up system in accordance with claim 1 , further comprising a vacuum valve, wherein the vacuum valve opens when a difference between the pressure in the feed line or in an interior of the filter unit and a surrounding pressure is below a prede

Assignees

• Draegerwerk Ag & Co Kgaa

Inventors

• Schüler Hans Ulrich
• Heesch Ralf
• Schmid Robert

Classifications

• A61M16/105 Primary

  Filters (A61M16/047, A61M16/22 take precedence; water traps A61M16/08) · CPC title

• A61M16/104

  specially adapted for anaesthetics (A61M16/18 takes precedence) · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D46/0036

  by adsorption or absorption · CPC title

• B01D46/0086

  Filter condition indicators · CPC title