Brain retraction sensor
First Claim
1. A brain retractor device comprising:
- a first end comprising a substantially inextensible first cavity, wherein said first end is integral with a retractor blade;
a plurality of electrodes exposed along a first surface of said first end;
a first electric conduit;
a second conduit, which said second conduit allows for measuring pressure; and
a second end comprising an exit port, which exit port engages said first and second conduit.
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Accused Products
Abstract
An electrode device is disclosed comprising a deformable envelope, further comprising recording electrodes and a pressure recording port. The device allows for monitoring of brain retraction pressure and local cortical electrical activity including DC potential, as well as redistribution of the force applied during retraction and cushioning of the rigid edges of the brain retractor, thereby diminishing the chance of focal brain injury during surgery. Retraction pressure recorded is equal over the full area of contact. A means is disclosed for optional evacuation of air from the system to improve accuracy and fidelity of the pressure measurements. Local brain hypothermia may be induced via the bladder and attached catheter, thereby providing additional neuroprotection during brain retraction. The device also allows for measurement of intracranial pressure, DC potential, EEG and, optionally, other physiologic parameters in epileptic and severe head trauma patients for management of edema and injury.
51 Citations
62 Claims
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1. A brain retractor device comprising:
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a first end comprising a substantially inextensible first cavity, wherein said first end is integral with a retractor blade; a plurality of electrodes exposed along a first surface of said first end;
a first electric conduit;a second conduit, which said second conduit allows for measuring pressure; and a second end comprising an exit port, which exit port engages said first and second conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A sub-dural device comprising:
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a first end comprising a substantially inextensible cavity;
a plurality of electrodes exposed along a first surface of said first end;a first electric conduit; a second conduit, which said second conduit allows for measuring pressure; and a second end comprising an exit port, which exit port engages said first and second conduit, wherein said device is able to operate whether the cavity is filled with a gas or a liquid. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification