A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
73/129
A61B 5/03 (2006.01)
Patent
CA 1193474
SUBARACHNOID BOLTS Abstract A subarachnoid bolt for use in measuring intracranial pressure includes a lower bolt half and an upper bolt half which can be screwed to the lower bolt half. A tubular member extends downwardly from the lower bolt half and is adapted to be inserted into a hole formed in a patient's skull. In one embodiment, the bolt is securely held in place when the free end of a tubular element carried by the upper bolt half enters the tubular member and cams the lowermost end thereof radially outwardly when the two bolt halves are screwed together. In a second embodiment, a sleeve on the lower bolt half bulges outwardly against the walls of the hole when the two bolt halves are screwed together.
423476
Borden Ladner Gervais Llp
Sweeney Paul L. Jr.
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