Valve module for a ventilation system, ventilation tube device, ventilator, ventilation system as well as process for severing and establishing a fluid-communicating connection

A ventilation tube device for ventilating a patient by a ventilation system, the ventilation tube device comprising:

• a hollow ventilation tube element with a patient end for providing breathing air to the patient and for removing exhaled air of the patient, with an inhalation end and an exhalation end, wherein the exhalation end has a counter-tube interface;
• a valve module arranged at the counter-tube interface for removing exhaled air, the valve module comprising:
• a tube interface for fluid-tight connection to the counter-tube interface and a first device interface for fluid-tight connection to a first counter-device interface of an exhalation port of a ventilator of the ventilation system, wherein the tube interface and the first device interface are fluid-communicatingly connected by a module space, wherein:
• the first device interface comprises an exhalation valve section for at least partially providing an exhalation flow of exhaled air with an exhalation pressure, the exhaled air arriving from the tube interface and flowing through the module space;
• the exhalation valve section includes a pressure-limiting element comprising a control section and a control element, wherein a control fluid with a control pressure is admitted to the control element;
• the control section is functionally connected to the control element and the exhalation pressure of the exhaled air is admitted to the control section;
• the pressure-limiting element is positioned, depending on the control pressure of the control fluid in the control element and depending on the exhalation pressure of the exhaled air, at least into a flow position, in which the pressure-limiting element releases the exhalation flow through the exhalation valve section, and into a blocking position, in which the pressure-limiting element blocks the exhalation flow through the exhalation valve section;
• and
• the inhalation end has a second device interface for fluid-tight connection to a second counter-device interface of an inhalation port of the ventilator of the ventilation system for providing breathing air.

A ventilator for ventilating a patient, the ventilator comprising:

• an exhalation port for removing exhaled air from the patient, wherein the exhalation port comprises a first counter-device interface for a fluid-tight connection to a first device interface of a ventilation tube device comprising a hollow ventilation tube element with a patient end for providing breathing air to the patient and for removing exhaled air of the patient, with an inhalation end and an exhalation end, wherein the exhalation end has a counter-tube interface;
• and a valve module arranged at the counter-tube interface for removing exhaled air, the valve module comprising:
• a tube interface for fluid-tight connection to the counter-tube interface and the first device interface for fluid-tight connection to the first counter-device interface, wherein the tube interface and the first device interface are fluid-communicatingly connected by a module space, wherein:
• the first device interface comprises an exhalation valve section for at least partially providing an exhalation flow of exhaled air with an exhalation pressure, the exhaled air arriving from the tube interface and flowing through the module space;
• the exhalation valve section includes a pressure-limiting element comprising a control section and a control element, wherein a control fluid with a control pressure is admitted to the control element by the exhalation port of the ventilator;
• the control section is functionally connected to the control element and the exhalation pressure of the exhaled air is admitted to the control section;
• the pressure-limiting element is positioned, depending on the control pressure of the control fluid in the control element and depending on the exhalation pressure of the exhaled air, at least into a flow position, in which the pressure-limiting element releases the exhalation flow through the exhalation valve section, and into a blocking position, in which the pressure-limiting element blocks the exhalation flow through the exhalation valve section;
• and the inhalation end has a second device interface;
• and
• an inhalation port for providing breathing air for the patient, wherein the inhalation port comprises a second counter-device interface for a fluid-tight connection to the second device interface of the ventilation tube device for providing breathing air.

A ventilation system for ventilating a patient, the ventilation system comprising:

• a ventilation tube device comprising:
• a hollow ventilation tube element with a patient end for providing breathing air to the patient and for removing exhaled air of the patient, with an inhalation end and an exhalation end, wherein the exhalation end has a counter-tube interface;
• and
• a valve module arranged at the counter-tube interface for removing exhaled air, the valve module comprising:
• a tube interface for fluid-tight connection to the counter-tube interface and a first device interface for fluid-tight connection to a first counter-device interface of an exhalation port of a ventilator of the ventilation system,
• wherein the tube interface and the first device interface are fluid-communicatingly connected by a module space, wherein:
• the first device interface comprises an exhalation valve section for at least partially providing an exhalation flow of exhaled air with an exhalation pressure, the exhaled air arriving from the tube interface and flowing through the module space;
• the exhalation valve section includes a pressure-limiting element comprising a control section and a control element, wherein a control fluid with a control pressure is admitted to the control element;
• the control section is functionally connected to the control element and the exhalation pressure of the exhaled air is admitted to the control section;
• the pressure-limiting element is positioned, depending on the control pressure of the control fluid in the control element and depending on the exhalation pressure of the exhaled air, at least into a flow position, in which the pressure-limiting element releases the exhalation flow through the exhalation valve section, and into a blocking position, in which the pressure-limiting element blocks the exhalation flow through the exhalation valve section;
• and
• the inhalation end has a second device interface for fluid-tight connection to a second counter-device interface of an inhalation port of the ventilator of the ventilation system for providing breathing air;
• and
• a ventilator comprising:
• an exhalation port for removing exhaled air from the patient, wherein the exhalation port has a counter-device interface for a fluid-tight connection to the first device interface of the ventilation tube device;
• and
• an inhalation port for providing breathing air for the patient, wherein the inhalation port comprises a second counter-device interface for a fluid-tight connection to the second device interface of the ventilation tube device for providing breathing air.

A process for severing a fluid-communicating connection between a device interface of a ventilation tube device and a counter-device interface of an exhalation port of a ventilator of a ventilation system, the process comprising:

• providing the ventilation system, wherein the provided ventilation system comprises a ventilation tube device comprising:
• a hollow ventilation tube element with a patient end for providing breathing air to the patient and for removing exhaled air of the patient, with an inhalation end and an exhalation end, wherein the exhalation end has a counter-tube interface;
• and a valve module arranged at the counter-tube interface for removing exhaled air, the valve module comprising:
• a tube interface for fluid-tight connection to the counter-tube interface and a first device interface for fluid-tight connection to a first counter-device interface of an exhalation port of a ventilator of the ventilation system, wherein the tube interface and the first device interface are fluid-communicatingly connected by a module space, wherein:
• the first device interface comprises an exhalation valve section for at least partially providing an exhalation flow of exhaled air with an exhalation pressure, the exhaled air arriving from the tube interface and flowing through the module space;
• the exhalation valve section includes a pressure-limiting element comprising a control section and a control element, wherein a control fluid with a control pressure is admitted to the control element;
• the control section is functionally connected to the control element and the exhalation pressure of the exhaled air is admitted to the control section;
• the pressure-limiting element is positioned, depending on the control pressure of the control fluid in the control element and depending on the exhalation pressure of the exhaled air, at least into a flow position, in which the pressure-limiting element releases the exhalation flow through the exhalation valve section, and into a blocking position, in which the pressure-limiting element blocks the exhalation flow through the exhalation valve section;
• and the inhalation end has a second device interface for fluid-tight connection to a second counter-device interface of an inhalation port of the ventilator of the ventilation system for providing breathing air;
• and a ventilator comprising:
• an exhalation port for removing exhaled air from the patient, wherein the exhalation port has a counter-device interface for a fluid-tight connection to the first device interface of the ventilation tube device;
• and an inhalation port for providing breathing air for the patient, wherein the inhalation port comprises a second counter-device interface for a fluid-tight connection to the second device interface of the ventilation tube device for providing breathing air;
• receiving a triggering of a start of severing;
• determining a control pressure for a control fluid, wherein an expiratory limit pressure is set in the valve module by the control pressure;
• filling the control element of the valve module of the ventilation tube device with a control fluid, the control fluid having the determined control pressure;
• and
• severing the fluid-communicating connection by separating the device interface and the counter-device interface.

A process for establishing a fluid-communicating connection between a device interface of a ventilation tube device and a counter-device interface of an exhalation port of a ventilator of a ventilation system comprising a ventilation tube device comprising:

• a hollow ventilation tube element with a patient end for providing breathing air to the patient and for removing exhaled air of the patient, with an inhalation end and an exhalation end, wherein the exhalation end has a counter-tube interface;
• and a valve module arranged at the counter-tube interface for removing exhaled air, the valve module comprising:
• a tube interface for fluid-tight connection to the counter-tube interface and a first device interface for fluid-tight connection to a first counter-device interface of an exhalation port of a ventilator of the ventilation system, wherein the tube interface and the first device interface are fluid-communicatingly connected by a module space, wherein:
• the first device interface comprises an exhalation valve section for at least partially providing an exhalation flow of exhaled air with an exhalation pressure, the exhaled air arriving from the tube interface and flowing through the module space;
• the exhalation valve section includes a pressure-limiting element comprising a control section and a control element, wherein a control fluid with a control pressure is admitted to the control element;
• the control section is functionally connected to the control element and the exhalation pressure of the exhaled air is admitted to the control section;
• the pressure-limiting element is positioned, depending on the control pressure of the control fluid in the control element and depending on the exhalation pressure of the exhaled air, at least into a flow position, in which the pressure-limiting element releases the exhalation flow through the exhalation valve section, and into a blocking position, in which the pressure-limiting element blocks the exhalation flow through the exhalation valve section;
• and the inhalation end has a second device interface for fluid-tight connection to a second counter-device interface of an inhalation port of the ventilator of the ventilation system for providing breathing air;
• and a ventilator comprising:
• an exhalation port for removing exhaled air from the patient, wherein the exhalation port has a counter-device interface for a fluid-tight connection to the first device interface of the ventilation tube device;
• and an inhalation port for providing breathing air for the patient, wherein the inhalation port comprises a second counter-device interface for a fluid-tight connection to the second device interface of the ventilation tube device for providing breathing air, the process comprising the steps of:
• arranging the first device interface at the first counter-device interface;
• determining the control pressure of the control fluid in the control element of the valve module of the ventilation tube device;
• determining an expiratory limit pressure on the basis of the determined control pressure;
• and
• establishing fluid-communicating connections and starting a removal of exhaled air of the patient through the exhalation port of the ventilator with the use of the determined expiratory limit pressure.