DE10025203C2 - Sealing nasal cannula for breathing therapy - Google Patents

Description

The invention relates to nasal cannula for the Ver delivery of a breathable gas.

Patients with chronic breathing difficulties (e.g. asthma and COPD (chronic obstructive breath pathological disease / Chronic Obstructive Pulmonary Disease)) are usually transported by oxygen donor in the body's oxygenation supports. Such patients are called spontaneously breathing patients referred to, in contrast to patients in the Kli nik intubated to a ventilator. For example, spontaneously breathing patients get one too Additional oxygen donation (LOT = long-term oxygen therapy pie) or respiratory support (via CPAP = continu ous posit. airways pressure). The gases are administered either through so-called nasal cannulae or noses probe (nasal application; in the simplest case a gas supplier tube, the opening below the nostril open to the patient) or with a breathing mask (especially with CPAP).

A device for the supply of breathing gas or oxygen DE 43 09 923 A1 describes a patient.

When using conventional nasal cannula the loss of the metered gas is usually large since none Sealing between the dosing nozzles of the nasal cannula and the nostrils is present. Much of the too dosie gas differs into the ambient air instead of the Lungs.

The invention has for its object an op to provide timed nasal cannula at which the named Problems do not arise.

The task was solved with nasal cannula with the features mentioned in claim 1.

The nasal cannula automatically seals for the duration ner gas dosing phase when using a gas dosing device the transition to the nose. By sealing the Na dosing hole (gas outlet), the loss of Do. siergases can be reduced. Further increases with this Measure also the ventilation pressure and thereby the Effect of gas. Sealing is the basic principle based on the fact that the sealing device the pressure of a Gases, preferably from the metered gas, and so, a seal is achieved.

With a facility, which during the In inflation, the inside of the nose becomes an atmosphere sphere partially or completely dense. this happens advantageous by taking advantage of during inspiration phase fed dosing gas. By controlling the The application part remains the length of the gas metering pulse less long (part of the inspiration phase) or over the entire inspiration phase in one bloated position. The introduction of a non-return valve (e.g. through one-sided bulged and slotted plastic cover) prevents the appliqué parts from swelling during the expiratory phase.

Surprisingly, it was found that disease conditions in which there is a partial collapse of the Al veolen comes (fibrosis), to a positive oxygen saturation increase comes when exhaling (expiratory phase) an increased resistance is opposed. In the Intensive ventilation technology (artificial respiration) is the as Peep (positive end expiratory pressure) known. Therefore the nasal cannula is advantageously designed so that even while During the expiration, a gas volume flow onto the applica tion part, especially the outflow openings of the noses glasses work. This gas volume flow is advantageous during the expiration less than during the inspirations phase, so that expiration (exhalation) is generally counter a gas pressure occurs, which is an increased resistance caused on exhalation. The gas pressure during expiration is generally fixed or adjustable or adjustable.

Another object of the invention is thus a nasal cannula with sealing elements, their sealing effect is controllable.

The disadvantage of using a standard nasal cannula that have little or no ventilation pressure arises, but for many diseases (especially for diseases in which partial or total Collapses of the alveoli z. B. fibrosis) a favorable Influence of healing, or would bring relief, with the nasal cannula according to the invention sore.

The nasal cannula is particularly suitable for treatment treatment of COPD patients.

The invention will be explained with reference to the drawing tert.

Fig. 1 shows the view of a game Ausführungsbei the nasal cannula

The nasal cannula shown in FIG. 1 contains the parts base body 1 , gas outlet pipes 2 with gas outlet opening 3 , sealing body 5 and check valves 4 . The base body 1 is usually made of plastic. The base body is a hollow body through the cavity of which the gas to be metered is passed. The interior of the sealing body 5 advantageously has a connection to the gas-carrying cave body 1 (not shown), so that the sealing body 5 is inflated in the Gasdo solution.

LIST OF REFERENCE NUMBERS

1

body

2

Gas outlet pipe

3

Gas outlet

4

check valves

5

sealing body

Claims (5)

1. nasal cannula containing a base body ( 1 ) with inflatable sealing elements ( 5 ) on the gas outlets ( 2 ). 2. nasal cannula according to claim 1, characterized in that the sealing effect of the sealing elements ( 5 ) is controllable. 3. nasal cannula according to claim 1 or 2, characterized in that the gas outlets ( 2 ) contain check valves ( 4 ). 4. nasal cannula according to one of claims 1 to 3, characterized in that the nasal cannula is connected to a control unit that a gas flow of the metered gas generated depending on the breathing phase. 5. nasal cannula according to claim 4, characterized in that the gas flow differs in inspiration and expiration, gas flow in expiration that is less than the gas flow during inspiration.