DE202005008156U1 - Disposable heated hose with integral temperature sensor for breathing/breathing therapy has hose heating, temperature sensor wires in common multi-wire connecting cable and/or common connecting element, is specified for one-time use - Google Patents

Abstract

The device has a hose wall (5), heating coils (2), at least one temperature sensor (1), a connecting cable (4) and at least one collar (3). The wires of the hose heating and temperature sensor are laid on part of a path in a common multi-wire connecting cable and/or a common electrical connecting element, whereby the entire unit including the temperature sensor is specified for one-time use.

Description

medical Gases should e.g. in the context of respiratory therapy or ventilation before Entry into the body a temperature close to body temperature exhibit. For this purpose, it is often necessary, the supplied gas to warm up to this target temperature and in certain applications also to moisten. This often happens far from the patient within a humidification unit. To the cooling of the gas under his Dew point and thus the formation of condensate in the gas-carrying hoses On the way to or from the patient to prevent the hoses are for this Applications often heatable and are from a control unit (e.g., breathing gas humidifier) with the required heating energy.

at Ventilation is common two gas hoses used, usually at their patient-side ends hose sleeves and possibly a Y-connector connected to the patient. One of the two hoses transported the fresh gas to the patient while the other discharges the gas exhaled by the patient. This is u.a. achieved by the valve control of the connected ventilator.

According to the prior art, the hoses that lead the gas to the patient and possibly back to the respirator can be designed as heating hoses so that the hose wall is heated as evenly as possible. This can be done, for example, by means of a heating spiral circulating around the hose, as by, inter alia DE 19617095C1 made known. Alternatively, the heating coil can also be mounted inside the hose.

For the scheme The electrical heating power of the hose is usually a temperature sensor for used the measurement of the gas temperature in the inner lumen of the hose. The location of this temperature measurement is in the case of fresh gas Hose as possible close to the patient.

To The prior art both hoses for single use are known as well as reusable tubing, disinfected according to the hygienic requirements or can be sterilized.

So far the patient-side temperature sensor is usually designed as a separate module and before putting the system into an appropriate opening of the system Hose introduced sealing.

There are also it for Reusable tubing one Solution, in the case of a temperature sensor as part of the production permanently is introduced into the patient-side hose sleeve (utility model 20 2004 006 484.7).

• 1. Die einsteckbaren Temperatursensoren müssen für eine korrekte Regelung durch den Anwender an der richtigen Stelle korrekt platziert werden. Ist der Sensor z.B. nicht tief genug oder überhaupt nicht eingesteckt, können Messfehler auftreten, die z.B. zur Überhitzung des Gases im Schlauch und zu Leckagen führen können. Es entstehen so Handling-Aufwand und Fehlerquellen.
• 2. Die einsteckbaren Temperatursensoren müssen bei den Einweg-Schläuchen vor der Entsorgung des Schlauches entfernt und anschließend desinfiziert werden. Es entstehen so Handling-Aufwand und Fehlerquellen.
• 3. Die einsteckbaren Temperatursensoren bilden eine hygienische Schwachstelle, wenn sie nur desinfiziert, aber nicht sterilisiert werden können. Es sind Fälle von Keimübertragungen zwischen Patienten durch derartige Sensoren belegt.
• 4. Für den elektrischen Anschluss des einsteckbaren Temperatursensors wird eine eigene Steck- und Kabelverbindung benötigt. Dies ist ebenfalls mit Kosten, Aufwand (elektrische Konnektion, Kabelführung entlang des Schlauches, ...) und Fehlerquellen verbunden.

The prior art described above has several well-known deficiencies.

• 1. The plug-in temperature sensors must be placed correctly in the correct place for correct regulation by the user. For example, if the sensor is not deep enough or not plugged in at all, measurement errors can occur, which can lead eg to overheating of the gas in the hose and to leaks. This results in handling effort and sources of error.
• 2. The plug-in temperature sensors must be removed from the disposable tubing before disposal of the tubing and then disinfected. This results in handling effort and sources of error.
• 3. The plug-in temperature sensors form a hygienic vulnerability if they can only be disinfected but not sterilized. There are cases of germ transmission between patients occupied by such sensors.
• 4. A separate plug and cable connection is required for the electrical connection of the plug-in temperature sensor. This is also associated with costs, effort (electrical connection, cable routing along the hose, ...) and sources of error.

task It is the object of the present invention to provide the o.g. Disadvantages in the application of disposable tubes to eliminate.

This is inventively Disposable airbags achieved, where a cost-effective One-way temperature sensor at the end of the heating section on the manufacturer side already integrated in the hose.

• – vereinfachtem Handling
• – geringerer Anfälligkeit für Anwender-Fehler beim Zusammenbau der Systeme (Leckagen, ...)
• – konsequenter hygienischer Ansatz (alle Komponenten, die mit dem Gas und/oder dem Patienten in Berührung kommen, werden vor dem Einsatz am nächsten Patienten durch neue Teile ersetzt)

Significant advantages over the prior art include, inter alia

• - simplified handling
• - lower susceptibility to user errors when assembling the systems (leaks, ...)
• - consistent hygienic approach (all components that come in contact with the gas and / or the patient are replaced by new parts before use at the next patient)

• 1. Das Kabel (4) für den elektrischen Anschluss des Heizschlauches wird vieradrig ausgeführt und am geräteseitigen Ende mit einem gemeinsamen elektrischen Verbindungselement (7) versehen.
• 2. Ggf. kann das Kabel (4) bereits herstellerseitig mittels Klammern o.ä. über die gesamte Schlauchlänge sicher geführt werden.
• 3. Zwei Adern werden innerhalb der später zu spritzenden (3) Muffe leitend mit den Heizdrähten verbunden, zwei Adern werden außerhalb der später zu spritzenden Muffe mit dem Temperatursensor verbunden. Dieser wird anschließend in einem Sensorhalter vergossen, wobei der Verguss die Anschlusskabel umfassen kann und dann gleichzeitig eine Zugentlastungsfunktion ausüben kann.
• 4. Die Stelle, an der sich das 4-adrige Kabel in die beiden 2-adrigen Zweige aufteilt, ist z.B. mittels Schrumpfschlauch einfach zu isolieren und mechanisch zu stabilisieren.
• 5. Die Muffe (3) erhält ein seitliches Loch (5), in welches nach dem Spritzprozess der Sensorhalter eingebracht werden kann. Ggf. ist der Sensorhalter nun von außen mit der Muffe zu verkleben; abhängig von den Anforderungen bzgl. der Dichtheit, Druckfestigkeit usw.
• 6. Über den Sensorhalter wird von außen eine Abdeck-Kappe (6) auf die Muffe (3) geklebt, die eine seitliche Kabeldurchführung besitzt. Ggf. kann auch diese Abdeckkappe (6) mit einer zugentlastenden Funktion für das Kabel ausgestattet werden.

One way of achieving the advantages according to the invention with minimal production costs is shown below:

• 1. The cable ( 4 ) for the electrical connection of the heating hose is four-wire running and at the device-side end with a common electrical connection element ( 7 ) Mistake.
• 2. If necessary can the cable ( 4 ) already by the manufacturer by means of brackets or similar. over the entire Hose length to be guided safely.
• 3. Two veins will be injected within the later ( 3 ) Muff conductively connected to the heating wires, two wires are connected outside the later to be sprayed sleeve with the temperature sensor. This is then potted in a sensor holder, wherein the potting may include the connection cable and then simultaneously perform a strain relief function.
• 4. The point at which the 4-wire cable divides into the two 2-wire branches is easy to isolate, for example, by means of shrink tubing and mechanically stabilized.
• 5. The sleeve ( 3 ) receives a side hole ( 5 ), in which after the injection process, the sensor holder can be introduced. Possibly. the sensor holder is now to be glued to the outside of the sleeve; depending on the requirements regarding tightness, pressure resistance, etc.
• 6. Over the sensor holder is from the outside a cover cap ( 6 ) on the sleeve ( 3 ) glued, which has a lateral cable entry. Possibly. can also this cap ( 6 ) with a strain relief function for the cable.

• • Der Sensor (1) ist gemäß obiger Ausführung stets korrekt an derselben Stelle positioniert, wodurch Handlingaufwand und Fehlerquellen reduziert sind.
• • Der Sensor (1) wird gemäß obiger Ausführungen gemeinsam mit dem Schlauch gewechselt. Handlingaufwand und Fehlerquellen sind dadurch reduziert.
• • Mittels einer fixen Positionierung des Anschlusskabels (4) über die Länge der Schlauchwand (5) kann dieses sicher geführt werden. Auch dadurch werden Handlingaufwand und Fehlerquellen reduziert.
• • Durch ein gemeinsames Anschlusskabel (4) und ein gemeinsames elektrisches Verbindungselement (7) für die elektrische Verbindung von Schlauchheizung und Sensor (1) mit dem Steuergerät wird eine zusätzliche Steckverbindung gespart.

The illustrated embodiment of the invention is advantageous with respect to all the disadvantages of the prior art described above, which will be explained in more detail below:

• • The sensor ( 1 ) is always positioned correctly in the same place according to the above embodiment, whereby handling effort and error sources are reduced.
• • The sensor ( 1 ) is changed together with the hose according to the above statements. Handling effort and sources of error are thereby reduced.
• • By means of a fixed positioning of the connection cable ( 4 ) over the length of the hose wall ( 5 ) this can be done safely. This also reduces handling effort and sources of error.
• • By a common connecting cable ( 4 ) and a common electrical connection element ( 7 ) for the electrical connection of hose heating and sensor ( 1 ) with the control unit, an additional connector is saved.

The temperature sensor according to the invention can be particularly in the embodiment described above, regardless of the type of Heizschlauches (internal or external heating coils ( 2 ), ...) can be combined with virtually any disposable tube manufactured so far without a temperature sensor without major investments etc. The temperature sensor can also be introduced outside the connection sleeve in the hose, if this is possible for measuring or strength reasons.

The described method leaves also at e.g. in neonatology u.U. apply required multi-zone airbags, where just according to more sensors at the appropriate positions are to be introduced into the hose.

Claims (3)

Heated tube for ventilation or respiratory therapy, consisting of a tube wall ( 5 ), Heating coils ( 2 ), at least one temperature sensor ( 1 ), a connection cable ( 4 ) and at least one sleeve ( 3 ), characterized in that the wires of hose heating ( 2 ) and temperature sensor ( 1 ) at least on a partial section in a common multi-core connection cable ( 4 ) and / or a common electrical connection element ( 7 ), wherein the entire assembly including temperature sensor for single use is determined. Device according to claim 1, characterized in that the temperature sensor or sensors ( 1 ) are placed for the measurement of the gas temperature so that they protrude into the tube inner lumen and at the same time seal the sleeve or the tube at the temperature sensor passage point. Apparatus according to claim 1, characterized in that the common connection cable ( 4 ) before entering the sleeve ( 3 ) is divided into two (at least 2-core) cable, wherein one of these cables for the connection of the heating wires is introduced into the sleeve and the second cable is provided for the connection of the temperature sensor.