Apparatus for pneumatically controlling a dynamic pressure wave device
First Claim
1. In an apparatus intended for use in applying compressive pressure to a mammal extremity including a first inflatable chamber surrounding the extremity, a second inflatable chamber enclosing the first chamber, and a pneumatic control means pneumatically connected to the first and second chambers for inflating and deflating the chambers from a source of pressurized gas such that the chambers apply compressive pressure to the extremity, a pneumatic control means comprising:
- means for connecting a source of pressurized gas to a first chamber so as to inflate the first chamber;
means for disconnecting the source from the first chamber so as to seal the first chamber and for connecting the source to a second chamber so as to inflate the second chamber when the pressure within the first chamber reaches a first predetermined level; and
means for disconnecting the source from the first chamber so as to deflate the first chamber while continuing to connect the source to the second chamber so as to inflate the second chamber when the pressure within the second chamber reaches a second predetermined level.
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Accused Products
Abstract
A source of pressurized gas is attached to a dynamic pressure wave appliance. The pneumatic control circuit connects the source of pressurized gas to a first chamber of the appliance. When the pressure in the first chamber reaches a first predetermined level, a valve seals the first chamber and connects the source so as to inflate a second chamber about the first. When the pressure in the second chamber reaches a second predetermined level, a valve permits the first chamber to deflate while continuing to connect the second chamber for inflation. A valve for sealing the inflated sleeve discontinues the inflation of the sleeve when the pressure therein reaches a third predetermined level. The sequence of operation of the pneumatic control circuit will cause a suitable dynamic pressure wave appliance to apply a pressure to a human or animal extremity which begins at the most distant end and travels up the extremity in the nature of a pressure wave.
117 Citations
14 Claims
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1. In an apparatus intended for use in applying compressive pressure to a mammal extremity including a first inflatable chamber surrounding the extremity, a second inflatable chamber enclosing the first chamber, and a pneumatic control means pneumatically connected to the first and second chambers for inflating and deflating the chambers from a source of pressurized gas such that the chambers apply compressive pressure to the extremity, a pneumatic control means comprising:
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means for connecting a source of pressurized gas to a first chamber so as to inflate the first chamber; means for disconnecting the source from the first chamber so as to seal the first chamber and for connecting the source to a second chamber so as to inflate the second chamber when the pressure within the first chamber reaches a first predetermined level; and means for disconnecting the source from the first chamber so as to deflate the first chamber while continuing to connect the source to the second chamber so as to inflate the second chamber when the pressure within the second chamber reaches a second predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. In an apparatus intended for use in applying compressive pressure to a mammal extremity including a first inflatable chamber surrounding the extremity, a second inflatable chamber enclosing the first chamber, and a pneumatic control means pneumatically connected to the first and second chambers for inflating and deflating the chambers from a source of pressurized gas such that the chambers apply compressive pressure to the extremity, a pneumatic control means comprising:
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means for inflating a first chamber; means for sealing the first chamber and for inflating a second chamber when the pressure within the first chamber reaches a first predetermined level; and means for deflating the first chamber while continuing to inflate the second chamber when the pressure within the second chamber reaches a second predetermined level. - View Dependent Claims (13, 14)
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Specification