US RE35,707 E · Apparatus for driving medical appliances

Abstract

A self-propelled wheelchair type artificial heart driving apparatus for giving freedom of movement to those patients who require an auxiliary artificial heart. Various safety devices are provided to avoid danger due to erroneous running of the wheelchair at the time when the patients board on or alight from the wheelchair and after alighting therefrom. For the purpose of enlarging a sphere of movement of the patients and preventing possible dangers, a motor-operated tube taking-up mechanism is provided and the wheelchair is permitted to run only when the tubes are in the orderly housed condition. A pressure compensating solenoid valve is provided in parallel to a pressure adjusting solenoid valve and a tank is dispensed with so as to make reduction in size of the artificial heart driving apparatus.

Claims29

Dependent claims

A mobile apparatus for transporting a patient connected to a medical appliance comprising:

a wheelchair;
medical appliance driving means mounted on said wheelchair and comprising;
a positive pressure source;
a first solenoid valve having an input terminal connected to an output terminal of said positive pressure source;
first pressure detecting means for detecting the pressure at an output terminal of said first solenoid valve;
a second solenoid valve having an input terminal connected to the output terminal of said first solenoid valve and an output terminal adapted to be connected to said medical appliance;
a negative pressure source;
a third solenoid valve having an input terminal connected to said negative pressure source;
second pressure detecting means for detecting the pressure at an output terminal of said third solenoid valve;
a fourth solenoid valve having an input terminal connected to the output terminal of said third solenoid valve and an output terminal adapted to be connected to said medical appliance;
and first electronic control means adapted to control opening and closing of said first solenoid valve in response to an output signal from said first pressure detecting means, control opening and closing of said third solenoid valve in response to an output signal from said second pressure detecting means, and to control opening and closing of said second and fourth solenoid valves at predetermined timings, respectively;
electric motor means for driving said wheelchair;
instruction means for controlling energization of said electric motor means;
state detecting means for detecting at least one state of at least one part moveable on said wheel chair, the state of a moveable part of said medical appliance driving means and the state of said instruction means and providing signals indicative of said states;
and
second electronic control means connected to said state detecting means for energizing said electric motor means in response to operation of said instruction means, and for inhibiting energization of said electric motor means when said state detecting means detects a dangerous state.

13 more elements

A mobile apparatus for transporting a patient connected to a medical appliance comprising:

a wheelchair;
medical appliance driving means mounted on said wheelchair and comprising;
a positive pressure source;
a first solenoid valve having an input terminal connected to an output terminal of said positive pressure source;
first pressure detecting means for detecting the pressure at an output terminal of said first solenoid valve;
a second solenoid valve having an input terminal connected to the output terminal of said first solenoid valve and an output terminal adapted to be connected to said medical appliance through a flexible tube;
a negative pressure source;
a third solenoid valve having an input terminal connected to said negative pressure source;
a fourth solenoid valve having an input terminal connected to an output terminal of said third solenoid valve and an output terminal adapted to be connected to said medical appliance through a flexible tube;
and first electronic control means adapted to control opening and closing of said first solenoid valve in response to an output signal from said first pressure detecting means, control opening and closing of said third solenoid valve in response to an output signal from said second pressure detecting means, and to control opening and closing of said second and fourth solenoid valve at predetermined times, respectively;
electric motor means for driving said wheelchair;
instruction means for controlling energization of said electric motor means;
first state detecting means for detecting the state of at least one part moveable on said wheelchair;
second state detecting means for detecting the state of said flexible tube of said medical appliance driving means;
third state detecting means for detecting the state of said instruction means;
and
second electronic control means connected to said state detecting means for energizing said electric motor in response to operation of said instruction means, and for inhibiting energization of said electric motor when at least one of said first, second and third state detecting means detects a dangerous state.

14 more elements

A mobile apparatus for transporting a patient connected to a medical appliance comprising:

a wheelchair;
medical appliance driving means mounted on said wheelchair and comprising;
a positive pressure source;
a first solenoid valve having an input terminal connected to an output terminal of said positive pressure source;
first pressure detecting means for detecting the pressure at an output terminal of said first solenoid valve ;
a second solenoid valve having an input terminal connected to the output terminal of said first solenoid valve and an output terminal adapted to be connected to said medical appliance through a flexible tube, a negative pressure source;
a third solenoid valve having an input terminal connected to said negative pressure source;
a fourth solenoid valve having an input terminal connected to an output terminal of said third solenoid valve and an output terminal adapted to be connected to said medical appliance through a flexible tube;
and first electronic control means adapted to control opening and closing of said first solenoid valve in response to an output signal from said first pressure detecting means, control opening and closing of said third solenoid valve in response to an output signal from said second pressure detecting means, and to control opening and closing of said second and fourth solenoid valves at predetermined timings, respectively;
and a tube taking-up means for rolling up said flexible tubes;
electric motor means for rotating said wheelchair;
instruction means for controlling energization of said electric motor means;
first state detecting means for detecting the state of at least one part moveable on said wheelchair;
second state detecting means for detecting the rolled up state of said flexible tubes of said medical appliance driving means;
third state detecting means for detecting the state of said instruction means;
and
second electronic control means connected to said state detecting means for energizing said electric motor in response to operation of said instruction means, and for inhibiting energization of said electric motor when at least one of said first, second and third state detecting means detects a dangerous state.

14 more elements

A mobile apparatus for transporting a patient connected to a medical appliance comprising:

a wheelchair;
medical appliance driving means mounted on said wheelchair and comprising;
a positive pressure source;
a first solenoid valve having an input terminal connected to an output terminal of said positive pressure source;
first pressure detecting means for detecting the pressure at an output terminal of said first solenoid valve;
a second solenoid valve having an input terminal connected to the output terminal of said first solenoid valve and an output terminal adapted to be connected to said medical appliance through a flexible tube;
a negative pressure source;
a third solenoid valve having an input terminal connected to said negative pressure source;
a fourth solenoid valve having an iput terminal connected to an output terminal of said third solenoid valve and an output terminal adapted to be connected to said medical appliance through a flexible tube;
a fifth solenoid valve connected in parallel to said first solenoid valve and a sixth solenoid valve connected in parallel to said third solenoid valve;
and first electronic control means adapted to control opening and closing of said first solenoid valve in response to an output signal from said first pressure detecting means, control opening and closing of said third solenoid valve in response to an output signal from said second pressure detecting means, control opening and closing of said second and fourth solenoid valves at predetermined timings, respectively, and to control said fifth and sixth solenoid valves at the predetermined timing in synchronous relation with operation of said second and fourth solenoid valve;
electric motor means for driving said wheelchair;
instruction means for instructing energization of said electric motor;
first state detecting means for detecting the state of at least one part moveable on said wheelchair;
second state detecting means for detecting the state of said flexible tube of said medical appliance driving means;
third state detecting means for detecting the state of said running instruction means;
and
second electronic control means connected to said state detecting means for energizing said electric motor in response to operation of said instruction means, and for inhibiting energization of said electric motor means when at least one of said first, second and third state detecting means detects a dangerous state.

15 more elements

An apparatus for driving a medical appliance comprising:

a positive pressure source;
a first solenoid valve having an input terminal connected to an output terminal of said positive pressure source;
a first pressure detecting means for detecting the pressure at an output terminal of said first solenoid valve;
a second solenoid valve having an input terminal connected to the output terminal of said first solenoid valve and an output terminal adapted to be connected to said medical appliance;
a negative pressure source;
a third solenoid valve having an input terminal connected to an output terminal of said negative pressure source;
a second pressure detecting means for detecting the pressure at an output terminal of said third solenoid valve;
a fourth solenoid valve having an input terminal connected to the output terminal of said third solenoid valve and an output terminal adapted to be connected to said medical appliance;
a fifth solenoid valve having an input terminal connected to said positive pressure source and an output terminal connected to the output terminal of said first solenoid valve;
and
first electronic control means adapted to control opening and closing of said first solenoid valve in response to an output signal from said first pressure detecting means, control opening and closing of said third solenoid valve in response to an output signal from said second pressure detecting means, control opening and closing of said second and fourth solenoid valves at predetermined timings, respectively, and to control opening and closing of said fifth solenoid valve according to predetermined timing in synchronous relation with operation of said second solenoid valve.

8 more elements

Dependencies are inferred from the claim text.

Apparatus for driving medical appliances

Life of this patent

Apparatus for driving medical appliances

Life of this patent

Abstract

Claims29