Brain retraction sensor
First Claim
1. A sub-dural sensor device comprising:
- an elongated first end comprising a substantially inextensible cavity, wherein said first end is configured to be placed sub-durally;
a plurality of non-polarizable electrodes exposed along at least one surface of said first end, and an electric conduit and a hydraulic conduit comprising an exit port at a shortened second end, wherein said first end engages said second end at said exit port, and further wherein one end of said electric conduit and one end of a remote reference electrode electrically connect to a differential DC amplifier.
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Accused Products
Abstract
An electrode grid device is disclosed comprising a deformable envelope, further comprising non-polarizable electrodes and a pressure recording port. The device is designed to allow for monitoring of brain retraction pressure and local cortical electrical activity including DC potential, as well as to redistribute the force applied during retraction and thereby diminish the chance of focal brain injury during surgery. Retraction pressure recorded is equal over the full area of contact, providing a more meaningful measurement than simply at one point on the retractor. A means is disclosed for evacuation of air from the system to improve accuracy and fidelity of the pressure measurements. It is a further aspect of the device to allow for measurement of intracranial pressure, DC potential and EEG in epileptic and severe head trauma patients for management of edema and injury, respectively.
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Citations
43 Claims
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1. A sub-dural sensor device comprising:
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an elongated first end comprising a substantially inextensible cavity, wherein said first end is configured to be placed sub-durally;
a plurality of non-polarizable electrodes exposed along at least one surface of said first end, and an electric conduit and a hydraulic conduit comprising an exit port at a shortened second end, wherein said first end engages said second end at said exit port, and further wherein one end of said electric conduit and one end of a remote reference electrode electrically connect to a differential DC amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A brain retractor sensor (BRS) device comprising:
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an elongated first end comprising a substantially inextensible cavity;
a plurality of non-polarizable electrodes exposed along a front face of said first end;
at least one releasable coupling projection comprising a back face of said first end;
and an electric conduit and a hydraulic conduit comprising an exit port at a shortened second end, wherein said first end engages said second end at said exit port, and further wherein one end of said electric conduit and one end of a remote reference electrode electrically connect to a differential DC amplifier. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification