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Patent Application Titled "Medical Device Comprising a Socket Unit for Connecting a Plug Unit of a Device for Providing Medical Fluids" Published...

August 22, 2014



Patent Application Titled "Medical Device Comprising a Socket Unit for Connecting a Plug Unit of a Device for Providing Medical Fluids" Published Online

By a News Reporter-Staff News Editor at Health & Medicine Week -- According to news reporting originating from Washington, D.C., by NewsRx journalists, a patent application by the inventor Marterstock, Stefan Konrad (Eussenheim-Hundsbach, DE), filed on January 28, 2014, was made available online on August 7, 2014 (see also Patents).

No assignee for this patent application has been made.

Reporters obtained the following quote from the background information supplied by the inventors: "For connecting external components to medical-technical systems, different connectors are known. The access to the medical-technical systems generally takes place by means of plugs that are plugged into matching sockets of the medical-technical systems. In this respect, the medical-technical systems, hereinafter generally designated as medical devices, comprise a corresponding socket unit, whereas the external components have a plug unit.

"For treating kidney patients, blood treatment devices are used, which include in particular the known extra-corporal dialysis devices or devices for peritoneal dialysis. For cleansing the blood of the patient, providing medical treatment fluids is required, which can be provided in fluid reservoirs that are connected to the blood treatment devices. Connecting the fluid reservoir to the blood treatment devices is carried out with a plug unit that is plugged into a socket unit of the blood treatment device.

"A device for providing a treatment fluid is known from EP 0 575 970 A2. The known device for providing a dialysis fluid comprises a bag for receiving the fluid, to which bag a tube line is connected that is connected at its free end to a plug. The dialyzer has a socket into which the plug is plugged. With the plug and the socket, two flow connection can be established so as to be able to feed fresh dialysis fluid from the bag into the dialysis device and to feed used dialysis fluid back into the bag.

"Connecting the device for providing medical fluids to the blood treatment device shall be as simple and secure as possible for the medical staff. For disinfection, it should be possible to rinse the socket unit with a rinsing fluid.

"The socket unit of the blood treatment device known from EP 0 575 970 A2 comprises a system for detecting the position of the plug unit in the socket unit, which system comprises a reed contact in the socket unit and a magnet in the plug unit."

In addition to obtaining background information on this patent application, NewsRx editors also obtained the inventor's summary information for this patent application: "It is an object of the present invention to make the supply of medical fluids to medical devices, in particular to blood treatment devices, for example extra-corporal dialysis devices or devices for peritoneal dialysis, simpler for the medical staff, and to increase the safety of the treatment.

"It is in particular an object of the present invention to detect an operating state of the medical device in a simple and reliable manner, and in particular, to provide a simple and secure solution for the position determination of a movable component of the socket unit of the medical device.

"The medical device according to the present invention has a socket unit, while the device for providing medical fluids has a plug unit.

"The socket unit and the plug unit are characterized in that with both units a flow connection can established in a simple and secure manner between the medical device on the one hand, and the device for providing medical fluids on the other.

"For establishing the flow connection, the socket unit has at least one connecting piece while the plug unit has at least one connector so that a fluid-tight connection can be established when the connector is connected to the connecting piece. It is not an essential component how the connecting piece and the connector are designed. The connecting piece and the connector, for their parts, can also be plug and socket, respectively.

"The medical device provides an automated connection of the plug unit to the socket unit by means of a connecting mechanism for establishing a connection between the at least one connecting piece and the at least one connector.

"The connecting mechanism comprises a drive unit that has at least one movable drive body that carries out a translational and/or rotational movement so as to carry out the connection of socket unit and plug unit.

"Moreover, the connecting mechanism comprises a position detection mechanism for detecting the linear position and/or the angular position of the drive body. Detecting the position and/or the angular position enables monitoring the operating state or controlling the medical device.

"A preferred embodiment of the present invention provides that the drive unit of the connecting mechanism comprises a drive body that has means for detachably connecting the plug unit to the socket unit. The means for detachably connecting the plug unit to the socket unit preferably have a receptacle for plugging in an attachment part of the plug unit.

"A further preferred embodiment provides that the at least one connecting piece of the socket unit is concentrically enclosed by a connecting part thereby forming a rinsing chamber, whereby the socket unit has a closure body with at least one closure piece for closing the at least one rinsing chamber.

"In this embodiment, the closure body is provided on a drive body that is pivotable about a pivot axis. The closure piece is arranged on the closure body and is spaced apart from the pivot axis, wherein the closure body can be pivoted between a first and a second pivot position.

"In the first pivot position, the at least one closure piece and the at least one connecting part or connecting piece lie on a common axis so that by a relative movement of plug unit and socket unit, a connection between closure piece and connecting part can be established for closing the rinsing chamber. In this connection, a relative movement of closure piece and connecting part is to be understood as a movement of a displaceable closure piece on a stationary connecting part or as a movement of a displaceable connecting part on a stationary closure piece.

"In the second pivot position, the at least one closure piece and the at least connecting part or connecting piece are arranged offset to one another so that when plugging the plug unit into the socket unit, a connection between the at least one connector of the plug unit and the at least one connecting piece of the socket unit can be established.

"Depending on the angular position of the pivotable drive body, the actions required for connecting the plug unit and the socket unit or for rinsing can be controlled or monitored.

"It is not an essential component for the present invention how the drive body is configured. The drive body can be any longitudinally displaceable or pivotable component of the connecting mechanism.

"The position detection mechanism for the drive body of the connecting mechanism is characterized by at least two magnet elements that are arranged spaced apart from each other and generate a magnetic field, and at least one sensor element that detects the magnetic field of the magnet elements, wherein the at least two magnet elements are arranged on the drive body and the at least one sensor element is arranged stationarily, or the at least two magnet elements are arranged stationarily and the at least one sensor elements is arranged on the drive body. Here, the evaluation unit is configured such that the linear position and/or the angular position of the drive body is determined based on the magnetic field generated by the at least two magnet elements and detected by the at least one sensor element. The two sensor elements allow a clear detection of the linear position and/or angular position over a wide movement range of the drive body.

"In one preferred embodiment, a first magnet element and a second magnet element that are spaced apart from each other with opposite polarity, and a first sensor element and a second sensor element that are spaced apart from each are provided, wherein the evaluation unit is configured such that based on the magnetic field detected by the first sensor element, two possible linear positions and/or angular positions of the drive body are determined, and based on the magnetic field detected by the second sensor element, it is determined whether the linear position and/or angular position determined with the first sensor element is the first or the second linear position and/or angular position of the two possible positions and/or angular positions. The differentiation between the two possible linear positions and/or angular positions can take place based on the sign of the magnetic field detected by the second sensor element.

"An alternative embodiment provides a limitation of the translational and/or rotational movement of the drive body through one or a plurality of stop elements to a movement range in which a clear determination of the position and/or the angular position is possible.

"In a further alternative embodiment, the position detection mechanism comprises a first magnet element and a second magnet element that are spaced apart from each other with opposite polarity, wherein for a clear determination of the position and/or angular position, only one sensor element is provided. For this, the evaluation unit is configured such that based on the magnetic field detected by the sensor element, two possible linear positions and/or angular positions of the drive body are determined, and that the evaluation unit is configured such that the gradient of the change of the magnetic field detected by the sensor element is determined in the case of a change of the linear position and/or angular position of the drive body. On the basis of the sign of the gradient of the change it is possible to clearly differentiate between the two positions and/or angular positions.

"The evaluation unit can generate a first control signal when the position detection mechanism detects a first advanced position of the drive body in which the at least one connector and the at least one connecting piece are disconnected, and can generate a second control signal when the position detection mechanism detects a second retracted position when the at least one connector is connected to the at least one connecting piece. The position detection mechanism can also generate control signals when a first pivot position and a second pivot position of the drive body are detected.

"The magnet element is preferably a permanent magnet. However, it can also be an electromagnet. The sensor element is preferably a Hall sensor or a magnetoresistive sensor, or can also be any other sensor for detecting a magnetic field.

"The medical device can be a blood treatment device, in particular an extra-corporal dialysis device or a device for peritoneal dialysis.

BRIEF DESCRIPTION OF THE DRAWINGS

"Exemplary embodiments are explained in more detail hereinafter with reference to the Figures, in which:

"FIG. 1 shows a device for providing a medical fluid, in particular a dialysis fluid, together with a blood treatment device and a device for filling the device for providing a dialysis fluid, in a simplified schematic illustration.

"FIG. 2 shows the plug unit of the device for providing a dialysis fluid together with the socket unit of the blood treatment device in a perspective illustration.

"FIG. 3 shows the socket unit of FIG. 2 in a perspective illustration, wherein the socket unit is prepared for a rinsing process.

"FIG. 4 shows the plug unit and the socket unit of FIG. 2 in a sectional illustration, wherein the socket unit is prepared for connecting the plug unit.

"FIG. 5 shows a section through the plug unit and the socket unit of FIG. 2, wherein the plug unit is loosely inserted in the socket unit.

"FIG. 6 shows a section through the plug unit and the socket unit of FIG. 2, wherein the plug unit is connected to the socket unit so that the flow connections are established.

"FIG. 7 shows the socket unit of FIG. 2 in a sectional illustration, wherein the socket unit is prepared for a rinsing process.

"FIG. 8 shows an illustration of the magnetic field in an arrangement with two magnet elements and a sensor element for detecting the linear position.

"FIG. 9 shows a simplified illustration of a first embodiment of the position detection device with two magnet elements and two sensor elements for detecting the linear position of a translational drive body, wherein the drive body is in a first position.

"FIG. 10 shows a position detection mechanism of FIG. 9, wherein the drive body is in a second position.

"FIG. 11 shows a simplified illustration of an embodiment of the position detection mechanism with two magnet elements and a sensor element for detecting the angular position of a rotational drive body, wherein the drive body is in a first position.

"FIG. 12 shows the position detection mechanism of FIG. 11, wherein the drive body is in a second position."

For more information, see this patent application: Marterstock, Stefan Konrad. Medical Device Comprising a Socket Unit for Connecting a Plug Unit of a Device for Providing Medical Fluids. Filed January 28, 2014 and posted August 7, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1711&p=35&f=G&l=50&d=PG01&S1=20140731.PD.&OS=PD/20140731&RS=PD/20140731

Keywords for this news article include: Patents, Medical Staff, Health Personnel.

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Source: Health & Medicine Week


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