Prosthetic device and connecting system using a vacuum
View Patent ↗The disclosed prosthetic device may comprise a receptacle for receiving a limb of a person; a vacuum pump in fluid communication with the receptacle for maintaining an amount of vacuum used for connecting the receptacle to the limb of the person; a controller; and/or an electronically controllable fluid control device. The controller may be configured to provide a vacuum signature to be displayed at a user interface and/or to control the amount of vacuum used for connecting the receptacle to the limb of the person.
1. A prosthetic device comprising:
a connecting portion for connecting to a person using vacuum;
a control structure for controlling an amount of vacuum used to connect the connecting portion to the person, the control structure includes a vacuum pump in fluid communication with the connecting portion for controlling the amount of vacuum, a vacuum sensing mechanism for measuring the amount of vacuum, a first-in first-out buffer memory that stores a set number of average vacuum values, and a controller configured to receive input from the vacuum sensing mechanism and to control the vacuum pump to control the amount of vacuum, the control structure stores a minimum value for activating the vacuum pump and a maximum value for deactivating the vacuum pump, the controller configured to determine a continuous rate of change of average vacuum values based on the set number of average vacuum values stored in the first-in first-out buffer memory and to activate the vacuum pump if the continuous rate of change of the average vacuum values exceeds a predetermined change value; and
a wireless transceiver for outputting data related to the vacuum for display at a user interface, wherein the user interface is remote from the prosthetic device and remote from the person;
wherein the controller is configured to allow the maximum value and the minimum value to be adjusted via the user interface in increments of no greater than 0.1 inches of mercury.
2. The prosthetic device of claim 1 , wherein the connecting portion includes a receptacle for receiving a limb of a person.
3. The prosthetic device of claim 1 , wherein the data related to the vacuum includes at least one of actual vacuum, run time of the vacuum pump, and initiations of the vacuum pump.
4. The prosthetic device of claim 1 , wherein the control structure is configured to store the data related to the vacuum in memory for later outputting and display at the user interface.
5. The prosthetic device of claim 1 , wherein the data related to the vacuum includes data indicating at least one of fit, function, and status of the prosthetic device.
6. The prosthetic device of claim 1 , further comprising a barometric sensor that provides an indication of an ambient pressure outside of the prosthetic device such that the control structure can calibrate the vacuum sensing mechanism to provide the same amount of absolute vacuum differential at various barometric pressures and at different operating altitudes.
7. The prosthetic device of claim 1 , wherein the control structure includes a learning mode that automatically adjusts the maximum value and the minimum value based on a monitored patient vacuum pattern during use of the prosthetic device by the person.
8. The prosthetic device of claim 1 , wherein the controller is automatically switchable between a static mode corresponding to the person sitting or standing still and a dynamic mode corresponding to the person moving, wherein the controller.
9. The prosthetic device of claim 8 , wherein the set number corresponds to a set number of time periods when the control structure is in the static mode.
10. The prosthetic device of claim 8 , wherein the set number corresponds to a set number of steps taken by the person when the control structure is in the dynamic mode.
11. The prosthetic device of claim 8 , wherein the predetermined change value is a first predetermined change value when the controller is in the static mode, and wherein the predetermined change value is a second predetermined change value when the controller is in the dynamic mode, the second predetermined change value is greater than the first predetermined change value.
12. The prosthetic device of claim 1 , wherein the controller is configured to activate the vacuum pump upon determining that the set number of average vacuum values indicates an extreme rate of change of the amount of vacuum.
13. A prosthetic device comprising: a connecting portion for connecting to a person using vacuum; a control structure for controlling an amount of vacuum used to connect the connecting portion to the person, the control structure including a vacuum pump, a controller and a first-in first-out buffer memory that stores a set number of average vacuum values, the controller configured to determine a continuous rate of change of average vacuum values based on the set number of average vacuum values stored in the first-in first-out buffer memory and to activate the vacuum pump if the continuous rate of change of the average vacuum values exceeds a predetermined change value; a wireless transceiver connected to the control structure; and a remote device including a display for outputting data related to the vacuum and a user input such that the person can adjust a vacuum initiation threshold pressure and a maximum vacuum pressure during use of the prosthetic device in increments of no greater than 0.1 inches of mercury, wherein the remote device is remote from the prosthetic device and remote from the person, and wherein the remote device receives the data from the wireless transceiver.