Invention Grant
- Patent Title: Heat transfer control for a prosthetic retinal device
- Patent Title (中): 假体视网膜装置的热传导控制
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Application No.: US11939371Application Date: 2007-11-13
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Publication No.: US08478415B1Publication Date: 2013-07-02
- Inventor: Brian L. Halla , Ahmad Bahai
- Applicant: Brian L. Halla , Ahmad Bahai
- Applicant Address: US CA Santa Clara
- Assignee: National Semiconductor Corporation
- Current Assignee: National Semiconductor Corporation
- Current Assignee Address: US CA Santa Clara
- Agent Andrew S. Viger; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: A61N1/36
- IPC: A61N1/36

Abstract:
A method for controlling heat dissipated from a prosthetic retinal device is described. A heat transfer device employs the Peltier heat transfer effect to cool the surface of the retinal device that faces the retina by dissipating/transferring collected heat away from the retina and towards the iris or front of the eye. According to one embodiment, a heat pump is formed in a second substrate on the retinal device. The heat pump is controlled by a temperature sense device that activates the heat pump, when a first predetermined temperature limit is exceeded. The temperature sense device deactivates the heat pump, when a temperature of the retinal device drops below a second predetermined temperature. According to another embodiment, a supply current of the retinal device may pass through the heat pump and a direction of heat transfer by the heat pump can be reversed, when the first predetermined temperature is exceeded.
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