초록 ▼

A fluidic valve assembly for use with a low pressure hyperbaric chamber, a pressurized source of oxygen, a flow control unit in an oxygen feed line in fluid communication with the chamber, an exhaust valve in fluid communication with the chamber, said exhaust valve being in fluid communication with

A fluidic valve assembly for use with a low pressure hyperbaric chamber, a pressurized source of oxygen, a flow control unit in an oxygen feed line in fluid communication with the chamber, an exhaust valve in fluid communication with the chamber, said exhaust valve being in fluid communication with the oxygen feed line whose pressure maintains the exhaust valve in the closed condition, a one way valve in a first pressure line in fluid communication with the chamber set to allow flow from the chamber at a prescribed pressure, a second pressure line in fluid communication with the chamber, said fluidic valve assembly comprising an inlet flow valve having an inlet connected to the oxygen source and an outlet fluidly connected to the oxygen feed line in communication with the chamber, a closure for closing said outlet, a power assembly connected to the first pressure line for closing said closure when fluid flows in the first pressure line upon the attainment of the prescribed chamber pressure, a first vent for venting the oxygen feed line to atmosphere, the aforesaid power assembly simultaneously opening the first vent to atmosphere with the closing of the closure for the outlet of the inlet flow valve, the decrease of pressure in the oxygen feed line allowing the exhaust valve to open to vent the chamber to atmosphere, a second vent for venting the power assembly, and a pressure assembly connected to the second pressure line in fluid communication with the chamber for controlling the second vent in response to chamber pressure wherein upon the loss of pressure in the chamber, the pressure in the aforesaid pressure assembly decreases to allow the second vent to open to vent the power assembly to atmosphere whereby the oxygen pressure from the timer will force open the closure for the outlet of the inlet flow valve and simultaneously close the first vent to open fluid flow between the outlet and the chamber through the oxygen feed line to commence a new cycle.

대표청구항 ▼

A low pressure hyperbaric device adapted for use in conjunction with a pressure source of oxygen for treatment of a patient including a chamber having an entrance adapted to allow the introduction of a body part, means associated with the entrance to seal the body part thereto and thereby provide an

A low pressure hyperbaric device adapted for use in conjunction with a pressure source of oxygen for treatment of a patient including a chamber having an entrance adapted to allow the introduction of a body part, means associated with the entrance to seal the body part thereto and thereby provide an air tight chamber, timing means for controlling treatment time connected in series with the pressure source of oxygen, said timing means including an on-off valve for starting and stopping oxygen flow, an oxygen feed line in fluid communication with the chamber, said oxygen feed line having an oxygen flow control means therein, an exhaust valve in fluid communication with the chamber, said exhaust valve being in fluid communication with the oxygen feed line whose pressure maintains the exhaust valve in the closed condition, a first pressure line in fluid communication with the chamber, said first pressure line having a one way valve therein set to allow flow from the chamber at a prescribed pressure, a second pressure line in fluid communication with the chamber, and a fluidic valve means operatively associated with the aforementioned apparatus, said fluidic valve means comprising an inlet flow valve having an inlet and an outlet, the inlet being fluidly connected to the timing means, the outlet being fluidly connected to the oxygen feed line in communication with the chamber, closure means for closing said outlet, power means connected to the first pressure line via said one way valve for closing said closure means when fluid flows in the first pressure line upon attainment of the prescribed chamber pressure, a first vent means for venting the oxygen feed line to atmosphere, the aforesaid power means simultaneously opening the first vent means to atmosphere with the closure of the closure means for the outlet of the inlet flow valve, the decrease in pressure in the oxygen feed line allowing the exhaust valve to open to vent the chamber to atmosphere, a second vent means for venting the power means, and pressure means connected to the second pressure line in fluid communication with the chamber for controlling the second venting means in response to chamber pressure wherein upon the loss of pressure in the chamber, the pressure in the aforesaid pressure means decreases to allow the second venting means to open to vent the power means to atmosphere whereby the oxygen pressure from the timing means will force open the closure means for the inlet and simultaneously close the first vent means to open fluid flow between the outlet and the chamber through the oxygen feed line to commence a new cycle.