Device for intratracheal ventilation and intratracheal pulmonary ventilation
First Claim
1. A method of providing ventilatory assistance to a patient which comprises:
- providing a catheter having a diffuser tip at an end thereof;
positioning said diffuser tip in an area near the carina of a patient, the patient having an anatomical dead space;
estimating the anatomical dead space of the patient; and
simultaneously supplying a constant supply of an oxygen containing gas mixture to the patient through the catheter and diffuser at a flow rate of 0.05 to 4 times the anatomical dead space of the patient per breath and mechanically ventilating the patient at a respiratory rate of 10-120 breaths per minute or higher.
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Accused Products
Abstract
A method and apparatus for intratracheal ventilation (ITV) and intratracheal pulmonary ventilation (ITPV) in which a catheter positioned in a patient'"'"'s trachea at the carina supplies a constant supply of fresh oxygen containing gas to flush anatomical dead space. By positioning the catheter in the patient'"'"'s trachea, the dead space of the trachea is bypassed and the trachea is only utilized for expiration. By providing a timed expiratory valve in the ITPV mode, lower pressures and fresh oxygen flow rates may be utilized with respiratory rates from 10 to 120 breaths per minute or higher. The catheter has a diffuser tip, and the patient is ventilated at a flow rate between 0.54 to 4 times the anatomical dead space per breath.
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Citations
13 Claims
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1. A method of providing ventilatory assistance to a patient which comprises:
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providing a catheter having a diffuser tip at an end thereof; positioning said diffuser tip in an area near the carina of a patient, the patient having an anatomical dead space; estimating the anatomical dead space of the patient; and simultaneously supplying a constant supply of an oxygen containing gas mixture to the patient through the catheter and diffuser at a flow rate of 0.05 to 4 times the anatomical dead space of the patient per breath and mechanically ventilating the patient at a respiratory rate of 10-120 breaths per minute or higher. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. An apparatus for providing ventilation assistance to a patient which comprises a fitting, a breathing tube, said fitting connected to said breathing tube and having at least two ports for connecting said fitting to a mechanical ventilator and a pressure regulator, a catheter having a diffuser tip, means for positioning said catheter through said breathing tube for locating diffuser tip an area near the carina of the patient, means for providing a constant supply of an oxygen containing gas mixture to the patient through the catheter at a flow rate of 0.05 to 4 times the anatomical dead space of the patient per breath, and for mechanically ventilating the patient at a respiratory rate of 10-120 breaths per minute or higher.
Specification