Surgery – Respiratory method or device – Hypobaric body chamber
Patent
1998-08-31
2000-01-04
Lewis, Aaron J.
Surgery
Respiratory method or device
Hypobaric body chamber
12820511, 12820512, A61G 1000
Patent
active
060098708
DESCRIPTION:
BRIEF SUMMARY
FIELD OF ART
This invention relates to apparatus for production of hypoxic gas mixture to be used in interval hypoxic therapy and can be used in practical medicine while treating diseases with gas mixture of lower oxygen content.
BACKGROUND OF THE INVENTION
In modern medicine have been spread the medical method based on activation of inner protective force of human body and its physiological reserves using no medicaments. One of this methods is interval hypoxic therapy which increases the resistance of human body in various pathological states resulted from preliminary therapy with oxygen insufficiency. In order to carry out interval hypoxic therapy the specific facilities should be developed.
There is installation for hypoxic therapy to be conducted, which comprises free air compressor, gas separating element made as hollow polymeric fibres, flowmeter, humidifier and chamber furnished as a room supplied with hypoxic gas mixture where the patient is placed to. The installation is provided with system to control operating conditions and patient's state. (USSR Authorship certificate No. 1526688, published in 1989)
The main deficiency of this installation is impossibility of strict measuring of hypoxic gas mixture (HGM), HGM concentration to chamber, eliminating the opportunity to select individual patient breathing program, that reduces treatment efficiency thereby.
There is also an installation for production of gas mixture to be used for interrupted at barometric pressure hypoxic therapy and which comprises connected in series membrane compressor, gas separating element made on the basis of hollow polymeric fibres of poly-4-methylpentene-1, pipeline with flowmeter, humidifier and means to be connected to patient as well as system to control operating conditions and patient's state. In this case the installation is additionally furnished with filter element, the operating conditions control system is automatic, the patient condition controlling means are accomplished as oxygen measuring element and means to be connected to patient as face-mask with check valve. (EP, No. 0472799A1, published 1992).
The main deficiency of this installation is insufficient productivity of gas separating element and its short service life.
DISCLOSURE OF INVENTION
The task to be solved in this invention is connected with increasing productivity of gas separating unit and service life of installation.
The task in question is solved by installation to produce gas mixture for internal hypoxic therapy that comprises connected in series compressor, gas separating element made of hollow polymeric fibres based on poly-4-methylpentene-1, pipeline with flowmeter, humidifier, face-mask of patient, automatic system to control operating conditions along with means controlling patient condition that furnished with oxygen measuring element and spirometer and dehumidifier placed before gas separating element and what's more, the latter is accomplished as two truncated cones connected together by big bases on a single support bar which is furnished, in its middle part, which disk of diameter of 4-6 diameters of support bar, and what's more the support bar is wrapped around by hollow fibres made of a mixture of poly-4-methylpentene-1 that have different melt indexes.
According it this invention, the support bar is wrapped around with the hollow fibres made a mixture of poly-4-methylpentene-1 with melt index being 100-180 g/10 min taken in quantity of 75-95% mass and with melt index being 20-5 g/10 min taken in quantity of 5-25% mass of fibre mass. In this case the compressor and spirometer can be mounted inside the body of installation or out of it. The preferable embodiment of dehumidifier has been carried out as filter cartridge filled up with silica gel.
Character of invention is to fabricate an original design of gas separating element which consists of two truncated cones connected together by big bases and interlocked on a single support bar. In the middle part of said bar the metal disk of certain size is placed. The thickness of l
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Elena Valerievna Tkatchouk
Lewis Aaron J.
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