Respiration system and connector system therefor for reducing contaminations

• US 10,456,549 B2
• Filed: 02/07/2013
• Issued: 10/29/2019
• Est. Priority Date: 02/10/2012
• Status: Active Grant

• Current Assignee: Dragerwerk AG & Company KGaA (FPS Vermögensverwaltung GmbH)
• Original Assignee: Dragerwerk AG & Company KGaA (FPS Vermögensverwaltung GmbH)
• Inventors: Heesch, Ralf, Turker, Ahmet
• Primary Examiner(s): Merene, Jan Christopher L
• Assistant Examiner(s): Ruddie, Elliot S
• Application Number:
  US13/761,295
• Publication Number:
  US 20130206145A1
• Time in Patent Office: 2,455 Days
• Field of Search: 12820024, 12820227, 12820312-20325, 12820418-20421, 12820425, 12820426, 12820512, 12820524, 12820527, 12820528, 12820529, 12820714, 12820715, 12820716, 12820717, 128911, 128912, 128909, 604411
• CPC Class Codes: A61M 16/0057 Pumps therefor
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 16/0875 Connecting tubes
• CPC Class Codes: A61M 16/0891 Closed circuit, e.g. for anaesthesia
• CPC Class Codes: A61M 16/1055 bacterial
• CPC Class Codes: A61M 16/208 Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
• CPC Class Codes: A61M 16/22 Carbon dioxide-absorbing devices ; Other means for removing carbon dioxidecartridges with absorbing substances for respiratory apparatus A62B19/00
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit

Abstract

A respiration system with a respirator (2) and with a breathing system (1), which is detachably coupled with the respirator. The coupling between the respirator and the breathing system takes place by at least two connector systems (3). The coupling between the respirator and the breathing system is designed such that the volume flow through the connector systems always takes place in only one direction. A pressure sensor (9; 9′) is preferably combined with at least one of the connector systems (3) such that a unidirectional volume flow, by which the direction of migration of bacteria through the connector system is influenced in the desired manner, becomes established within this connector system (3), as a result of which the connector system and the coupled sensor are kept free from bacteria, viruses and other contaminants.

Claims

1. A respiration system comprising:

a respirator comprising a respirator housing having a respirator housing interior space;

at least two connector systems, each of said two connector systems comprising a connector structure having a connector structure outer surface portion, a first connector structure end portion and a second connector structure end portion;

a breathing system detachably coupled with the respirator by the at least two connector systems, the breathing system comprising an expiratory branch and an inspiratory branch, said at least two connector systems being formed separate from said expiratory branch and said inspiratory branch, said breathing system comprising a breathing system housing having a breathing system housing interior space, said respirator housing and said breathing system housing defining a gap, said respirator housing having a respirator housing opening and a respirator housing outer surface, said connector structure extending from a position located in said respirator housing interior space through said respirator housing opening to another position located in said breathing system housing interior space, wherein said connector structure bridges said gap, said connector structure outer surface portion extending continuously, without interruption from said respirator housing interior space to said breathing system housing interior space, said second connector structure end portion being located in said breathing system housing interior space at a spaced location from said respirator housing outer surface, wherein said second connector structure end portion is located outside of said respirator housing outer surface, said first connector structure end portion being located in said respirator housing interior space;

a controllable gas inlet to admit gas from the respirator into the breathing system via one of the at least two connector systems;

a controllable gas outlet to draw off gas from the breathing system into the respirator via another one of the at least two connector systems;

valves controlling the controllable gas inlet and the controllable gas outlet such that only a unidirectional volume flow, by which the direction of migration of bacteria, viruses or other contaminants through the respective connector system is affected, prevails in each corresponding connector structure, so that collection of bacteria, viruses or other contaminants on the connector systems is essentially reduced, wherein gas flows only into the breathing system via the gas inlet during operation of the respirator, wherein the gas does not flow back into the respirator during operation of the respirator, wherein no bacteria or viruses present in the breathing system enters the one of the at least two connector systems associated with the gas inlet during operation of the respirator, wherein the bacteria or viruses, which enter the breathing system from expired fluid, enter only one of the connector systems arranged in the respirator from the breathing system via the gas outlet such that the bacteria or viruses remain in the respirator; and

a sensor wherein at least one of the at least two connector systems is coupled with the sensor such that due to the unidirectional volume flow through the respective connector system, collection of bacteria, viruses or other contaminants on a measuring line of the coupled sensor or on the coupled sensor itself is essentially prevented from occurring, the measuring line being connected to the connector structure outer surface portion within the respirator housing interior space such that the measuring line is directed away from the unidirectional volume flow.

2. A respiration system in accordance with claim 1, wherein:

each of the at least one of the at least two connector systems is coupled with the sensor via a respective measuring line for the sensor, said sensor being arranged in said respirator housing interior space, said measuring line comprising an opening, wherein a filter is arranged between said opening and said sensor; and

a constant or intermittent volume flow, which is necessary for the operation of the breathing system, is combined within each of the at least two connector systems with the measuring line for the corresponding sensor such that the volume flow is merged with the measuring line of the sensor or with the sensor itself already within the respirator.

3. A respiration system in accordance with claim 1, wherein the controllable gas inlet introduces gas from the respirator through one of said valves via one of the at least two connector systems into the breathing system, wherein each of the at least two connector systems is coupled with a respective sensor such that the volume flow through the connector system is a respective unidirectional flow, wherein the gas is sent in one direction through one of the connector systems and the gas is not sent in an opposite direction through the one of the connector systems, wherein the bacteria or viruses are prevented from being transferred from the respirator into the breathing system via the respective unidirectional flow from breathing system to the respirator.

4. A respiration system in accordance with claim 1, further comprising:

a further connector system; and

a controllable fresh gas supply unit connected to the respirator to introduce fresh gas to the respirator and into the breathing system via the further connector system, wherein the further connector system is coupled with a respective sensor such that the volume flow through the further connector system is a further connector system unidirectional volume flow.

5. A respiration system in accordance with claim 1, further comprising another sensor, the sensor and the another sensor defining a plurality of pressure sensors, each of the pressure sensors being coupled with a corresponding one of the at least two connector systems via a respective measuring line, said measuring line comprising an arcuate portion, said measuring line comprising an opening in fluid communication with said corresponding one of the at least two connector systems and one of said pressure sensors, said one of said pressures sensors being located at a first distance from a housing of said respirator, said opening being located at a second distance from said housing of said respirator, wherein said first distance is greater than said second distance.

6. A respiration system in accordance with claim 1, wherein:

the breathing system further comprises a CO₂ absorber; and

the CO₂ absorber is provided between the expiratory branch and the inspiratory branch.

7. A respiration system in accordance with claim 1, further comprising a respiration drive electrically connected to the respirator, wherein:

the breathing system comprises connectors; and

the respiration drive is detachably coupled with the breathing system via the connectors.

8. A respiration system in accordance with claim 1, further comprising another sensor, the sensor and the another sensor defining a plurality of pressure sensors, each of the pressure sensors being coupled with a corresponding one of the at least two connector systems via a respective measuring line, said measuring line comprising an arcuate measuring line portion and a measuring line opening in fluid communication with said connector socket and one of said pressure sensors, wherein each connector structure comprises a connector socket essentially in the form of a cylindrical pipe that is connected with the measuring line for a corresponding pressure sensor such that the volume flow through the connector socket is merged with the respective measuring line within the respirator, each of said pressure sensors being arranged in said respirator housing interior space, said second connector structure end portion comprising a second end portion opening, said measuring line opening being located at a first distance from said second end portion opening, said one of said pressure sensors being located at a second distance from said second end portion opening, said second distance being greater than said first distance, said breathing system comprising a breathing system interior space, said second connector structure end portion being located in said breathing system interior space with said breathing system detachably connected to said respirator, said second connector structure end portion opening facing in a direction parallel to a flow of fluid in said breathing system.

9. A respiration system in accordance with claim 1, wherein each connector structure comprises:

a connector socket connected to the respirator, said first connector structure end portion being located at a spaced location from said respirator housing; and

a passage opening provided in a housing of the breathing system, wherein each of the connector sockets of the respirator is inserted into a corresponding passage opening of the breathing system for coupling the breathing system with the respirator.

10. A respiration system in accordance with claim 1, wherein:

each connector structure has a connector socket connected to the respirator, said connector socket being directly connected to said respirator and said breathing system with said breathing system detachably connected to said respirator;

each connector socket has a side wall with a socket;

a pressure sensor is provided at an end of the socket, arranged within the respirator; and

a filter is arranged between said pressure sensor and one of said at least two connector systems.

11. A respiration system in accordance with claim 10, further comprising pressure sensors wherein:

the socket is a tube socket;

a tube is arranged at the tube socket;

the tube forms the measuring line; and

the pressure sensors are connected to an end of the respective tubes.

12. A respiration system in accordance with claim 10, wherein the socket is sloped relative to the connector socket in a direction opposite to a direction of flow through the connector socket, whereby the socket comprises a sloped portion, said sloped portion comprising a first sloped end portion and a second sloped end portion, said first sloped end portion being located from a first distance from said respirator housing, said second sloped end portion being located at a second distance from said respirator housing, said first distance being less than said second distance.

13. A respiration system in accordance with claim 11, further comprising:

another filter to provide a plurality of filters, each of said filters being connected between the end of the tube and one of the pressure sensors.

14. A respiration system in accordance with claim 1, further comprising another sensor, the sensor and the another sensor defining a plurality of pressure sensors wherein:

each connector structure has a connector socket connected to the respirator;

a port socket is arranged on a side wall of each connector socket within the respirator; and

each pressure sensor is connected at an end of a respective port socket.

15. A respiration system in accordance with claim 14, wherein:

the port socket has an end connected with the respective pressure sensor; and

a filter membrane is provided between the end of the port socket and the pressure sensor.

16. A respiration system in accordance with claim 13, wherein:

a port socket is provided at an end with a flange;

the flange engages with a clamp; and

the respective sensor is fastened to the port socket via the clamp.

17. A respiration system in accordance with claim 15, wherein the filter membrane possesses water-repellant and/or antibacterial properties.

18. A connector system for coupling a respirator and a breathing system, the connector system comprising:

a first connector system connecting the respirator and the breathing system to connect a controllable gas inlet of the respirator to the breathing system to admit gas from the respirator into the breathing system via the first connector system, said first connector system being formed separate from inspiration and expiration branches of the breathing system, said first connector system comprising a first connector body having a first connector body first end and a first connector body second end, said first connector body first end being located in a respirator interior space of said respirator, said first connector body second end being located in a breathing system interior space of said breathing system, wherein said first connector body bridges a gap between said respirator and said breathing system, said first connector body comprising a first connector body portion extending continuously, without interruption, from a position in said breathing system interior space to a position in said respirator interior space;

a second connector system connecting the respirator and the breathing system to connect a controllable gas outlet of the respirator to the breathing system to draw off gas from the breathing system into the respirator via the second connector system, said second connector system comprising a second connector body having a second connector body first end and a second connector body second end, said second connector body first end being located in said respirator interior space of said respirator, said connector body second end being located in said breathing system interior space of said breathing system, said second connector body comprising a second connector body portion extending continuously, without interruption, from a position in said breathing system interior space to a position in said respirator interior space, wherein said second connector body bridges another gap between said respirator and said breathing system, wherein valves control flow through the controllable gas inlet and the controllable gas outlet such that only a unidirectional volume flow, by which the direction of migration of bacteria, viruses or other contaminants through the respective connector system is affected, prevails in the first connector system and in the second connector system, so that a collection of bacteria, viruses or other contaminants on the connector systems is reduced, said second connector system being formed separate from the inspiration and expiration branches of the breathing system, wherein the gas flows only into the breathing system via the gas inlet during operation of the respirator, wherein the gas does not flow back into the respirator during operation of the respirator, wherein no bacteria or viruses present in the breathing system enters the first connector system associated with the gas inlet during operation of the respirator, wherein the bacteria or viruses, which enter the breathing system from expired fluid, enter only one of the first connector system and the second connector system arranged in the respirator from the breathing system via the gas outlet such that the bacteria or viruses remain in the respirator; and

a sensor, wherein at least one of the first connector system and the second connector system is coupled with the sensor, wherein valves control the flow through the controllable gas inlet and the controllable gas outlet such that due to the only unidirectional volume flow through the respective connector system, collection of bacteria, viruses or other contaminants on one of a measuring line of the sensor and the coupled sensor itself is essentially prevented from occurring, the measuring line being connected to one of the first connector system and the second connector system in the respirator interior space such that the measuring line extends in a direction away from the unidirectional volume flow.

19. A connector system in accordance with claim 18, wherein each of the first connector body and the second connector body comprises:

a connector socket connected to the respirator, said connector socket extending exclusively from said respirator to said breathing system with said breathing system detachably connected to said respirator; and

a socket arranged on a side wall of connector socket within the respirator, the socket having an end connected to a pressure sensor, wherein the gas is sent in a single direction in each of the first connector system and the second connector system, wherein the bacteria or viruses are prevented from being transferred from the respirator into the breathing system via a unidirectional flow of gas from the breathing system to the respirator.

20. A connector system in accordance with claim 19, wherein:

the socket is a tube socket;

a tube is connected to the tube socket;

the tube forms the measuring line; and

the pressure sensor is provided connected to an end of the tube.

21. A connector system in accordance with claim 19, wherein the socket is slightly sloped in relation to the connector socket, in a direction opposite to a unidirectional direction of flow through the connector socket, whereby the socket comprises an arcuate portion, said arcuate portion comprising a first end portion and a second end portion, said first end portion being located from a first distance from a housing of said respirator, said second end portion being located at a second distance from said housing of said respirator, said first distance being less than said second distance.

22. A connector system in accordance with claim 19, wherein a filter is provided between the tube socket and the pressure sensor.

23. A connector system in accordance with claim 18, wherein each of the first connector body and the second connector body comprises a connector socket connected to the respirator, wherein:

the connector socket has a side wall with a port socket within the respirator; and

a pressure sensor is connected to the port socket.

24. A connector system in accordance with claim 23, wherein:

a filter membrane is provided between an end of the port socket and the pressure sensor.

25. A connector system in accordance with claim 23, wherein

the port socket is provided with a flange at an end;

a clamp is provided to engage the flange to fasten the pressure sensor to the port socket.

26. A connector system in accordance with claim 24, wherein the filter membrane possesses water-repellant and/or antibacterial properties.

27. A respiration system comprising:

a respirator comprising a respirator housing, a controllable gas inlet and a controllable gas outlet, said respirator housing comprising a respirator interior space;

valves controlling the controllable gas inlet and the controllable gas outlet;

a breathing system comprising an expiratory branch and an inspiratory branch, said breathing system comprising breathing system housing having a breathing system interior space;

a first connector system connected to the respirator housing and connecting the respirator controllable gas inlet and the breathing system to admit gas from the respirator into the breathing system via the first connector system, said first connector system being formed separate from said expiratory branch and said inspiratory branch, said first connector system comprising a first connector system socket having a first connector system socket first end portion and a second connector system socket second end portion, said first connector system socket first end portion being arranged in said breathing system interior space, said second connector system socket second end portion being arranged in said respirator interior space, said first connector system socket comprising a first connector system socket outer surface portion extending continuously from said breathing system interior space to said respirator interior space;

a second connector system connected to the respirator housing and connecting the respirator controllable gas outlet and the breathing system to draw off gas from the breathing system into the respirator via the second connector system, said second connector system being formed separate from said expiratory branch and said inspiratory branch, said second connector system comprising a second connector system socket having a second connector system socket first end portion and a second connector system socket second end portion, said second connector system socket first end portion being arranged in said breathing system interior space, said second connector system socket second end portion being arranged in said respirator interior space, said second connector system socket comprising a second connector system socket outer surface portion extending continuously from said breathing system interior space to said respirator interior space, wherein said first connector system and said second connector system socket bridge a gap between said breathing system housing and said respirator housing; and

a sensor wherein at least one of the first connector system and the second connector system is coupled with the sensor, wherein;

the breathing system is detachably coupled with the respirator housing by the first connector system and the second connector system; and

the valves control flow through the controllable gas inlet and the controllable gas outlet such that only a unidirectional volume flow prevails in each of the first connector system socket and the second connector system socket by which the direction of migration of bacteria, viruses or other contaminants through the respective connector system is affected such that a collection of bacteria, viruses or other contaminants on the connector systems is reduced and the valves control flow through the controllable gas inlet and the controllable gas outlet such that due to the unidirectional volume flow through the respective connector system, collection of bacteria, viruses or other contaminants on a measuring line of the sensor or on the sensor is reduced, wherein the gas flows only into the breathing system via the gas inlet during operation of the respirator, wherein the gas does not flow back into the respirator during operation of the respirator, wherein no bacteria or viruses present in the breathing system enters the first connector system associated with the gas inlet during operation of the respirator, wherein the bacteria or viruses enter the breathing system from expired fluid, the bacteria or viruses entering only one of the first connector system and the second connector system arranged in the respirator from the breathing system via the gas outlet such that the bacteria or viruses remain in the respirator, wherein the bacteria or viruses are not transferred from the respirator into the breathing system, the measuring line being connected to one of the first connector system and the second connector system within the respirator interior space such that the measuring line extends in a direction away from the unidirectional volume flow.