JET VENTILATION CATHETER, IN PARTICULAR FOR VENTILATING A PATIENT
First Claim
1. A catheter structured to be connected to a gas flow reversing element for ventilating a patient, the catheter comprising:
- an elongate member defining a ventilation channel therein alternately delivering oxygen or oxygen containing gas to and removing respiratory gas from the patient'"'"'s airways, wherein said ventilation channel defines an open end and a connector end for connecting to the gas flow reversing element, anda pressure sensor located outside said ventilation channel for measuring the pressure near said open end of said ventilation channel.
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Accused Products
Abstract
The present invention relates to a catheter for ventilating a patient, with a ventilation channel for alternately delivering and removing air and/or oxygen to and from the patient'"'"'s airways, the catheter having a maximum external diameter of at most 6 mm, mm, and the ventilation channel having an open end, and a connector end for connection to a gas flow reversing element. According to the invention, the catheter is provided with means or elements for measuring the pressure outside the ventilation channel near the open end. The catheter preferably has a pressure measurement channel, with an open measurement end near the open end of the ventilation channel, and a measurement connector piece for connecting a pressure display device. Of particular advantage is a catheter with an expansion body (cuff) that is fluidically connected to a supply channel through which the expansion body can be increased or reduced in size by means of a fluid. The jet ventilation catheter according to the invention permits a novel ventilation principle that can be regarded as a bridge between classical jet ventilation and conventional controlled ventilation and that opens up possibilities for new and improved interventions in the airways.
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Citations
26 Claims
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1. A catheter structured to be connected to a gas flow reversing element for ventilating a patient, the catheter comprising:
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an elongate member defining a ventilation channel therein alternately delivering oxygen or oxygen containing gas to and removing respiratory gas from the patient'"'"'s airways, wherein said ventilation channel defines an open end and a connector end for connecting to the gas flow reversing element, and a pressure sensor located outside said ventilation channel for measuring the pressure near said open end of said ventilation channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for ventilating a patient, comprising:
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providing a gas flow reversing element; providing a catheter comprising an elongate member defining a ventilation channel therein for alternately delivering oxygen or oxygen containing gas to and removing respiratory gas from the patient'"'"'s airways, wherein the ventilation channel defines an open end and a connector end for connecting to the gas flow reversing element, the catheter further comprising a pressure sensor located outside the ventilation channel for measuring the pressure near the open end of the ventilation channel; inserting the catheter from the outside into the trachea; performing jet ventilation with expiratory assistance through the catheter; measuring the pressure near the open end of the ventilation channel; and determining the intervals for delivering and removing oxygen and/or air based upon pressure measurement values. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of ameliorating a breathing obstruction in a subject, comprising:
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providing a gas flow reversing element; providing a catheter comprising an elongate member defining a ventilation channel therein for alternately delivering and removing air and/or oxygen to and from the patient'"'"'s airways, wherein the ventilation channel defines an open end and a connector end for connecting to the gas flow reversing element; inserting the catheter from the outside into the trachea; and performing jet ventilation with expiratory assistance through the catheter such that the subject is normoventilated. - View Dependent Claims (23, 24, 25, 26)
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Specification