Cranial sensor attaching device and method for its use
First Claim
1. A cranial sensor attaching device for securing a cylindrical end-sensitive sensor to a person'"'"'s skull through a hole made in the skull so that the sensitive end of the sensor is securely positioned in tangential relationship to the brain and its covering membranes comprising:
- a first cylinder having an internal device adapted to receive and hold said sensor;
said first cylinder having a flange on its lower end;
a second cylinder surrounding the first cylinder and threaded thereon, said second cylinder being slotted to provide a plurality of readily positioned flexible leg portions adapted to extend within the hole in the skull exteriorly of the lower end of the first cylinder;
means for moving the second cylinder relative to the first cylinder to cause the flange on the end of the first cylinder to expand the leg portions of the second cylinder into enlargement with the hole in the skull; and
a third cylinder positioned within the first cylinder and asapted to hold the sensor securely in place within the first cylinder.
1 Assignment
0 Petitions
Accused Products
Abstract
A sensor attaching device and a method for monitoring physiological pressure and other physiological parameters by application of an external pressure sensor to the surface of the brain is disclosed. The cranial sensor attaching device consists of a series of concentric cylinders, two of which have flanged ends configured in such manner that the flanged end of the outer cylinder expands radially when the flanged end of the inner cylinder is withdrawn through it. This feature prevents the device, once inserted through a hole in the skull, from being withdrawn. The flange on the outer cylinder is configured so that when inserted and expanded it contacts the inner lip (table) of the skull at three equidistant points around the circumference of the hole, thus assuring that the tip of the sensor is positioned tangential to the surface of the brain. A finger nut over the outer cylinder is tightened against the outer table of the skull, securing the device in place so that it cannot be pushed into the brain or rotated within the hole. The end-sensitive sensor is inserted into the inner cylinder and held in position by a screw cap, which protrudes through an incision in the skin. This allows the sensor to be removed for inspection, calibration, or replacement without removing the attaching device from the skull.
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Citations
6 Claims
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1. A cranial sensor attaching device for securing a cylindrical end-sensitive sensor to a person'"'"'s skull through a hole made in the skull so that the sensitive end of the sensor is securely positioned in tangential relationship to the brain and its covering membranes comprising:
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a first cylinder having an internal device adapted to receive and hold said sensor; said first cylinder having a flange on its lower end; a second cylinder surrounding the first cylinder and threaded thereon, said second cylinder being slotted to provide a plurality of readily positioned flexible leg portions adapted to extend within the hole in the skull exteriorly of the lower end of the first cylinder; means for moving the second cylinder relative to the first cylinder to cause the flange on the end of the first cylinder to expand the leg portions of the second cylinder into enlargement with the hole in the skull; and a third cylinder positioned within the first cylinder and asapted to hold the sensor securely in place within the first cylinder. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification