Apparatus for frameless stereotactic surgery
First Claim
1. A stereotactic apparatus comprising a rigid half circular headclamp, at least three fixation pins carried by said headclamp, spaced from one another and extending inwardly thereof toward the center said headclamp, said fixation pins for application to a patient'"'"'s skull to secure said headclamp on said skull in outwardly spaced position therefrom, a connector carried by one end of said headclamp to firmly secure said headclamp to a patient support surface, an articulated arm having a proximal end and a distal end, an attachment device carried by said proximal end and securing said articulated arm to said headclamp, a double chuck device secured to the distal end of said articulated arm, said articulated arm including arm sections and clampable joints to secure said chuck in any selected spatial position close to said patient'"'"'s skull, said chuck including a body, a ball collet in said body, said ball collet capable of axially guiding an elongated surgical instrument, a first locking device to releasably lock said ball collet in a selected orientation and a second locking device to releasably lock said elongated instrument in a selected axial position, said first and second locking devices actuated independently of each other.
2 Assignments
0 Petitions
Accused Products
Abstract
This apparatus comprises a rigid half circular headclamp, three fixation pins to firmly secure the clamp to the patient'"'"'s skull, a connector to firmly secure the clamp to a surgical table on which the patient rests, an articulated arm including clampable joints, secured to the headclamp in one of several possible positions and a double chuck secured to the distal end of the articulated arm. The double chuck has two ball collets arranged in side by side cavities in the chuck body, and two locking screws for each ball collet. A first locking screw releasably locks the ball collet in a selected orientation, a second separate locking screw releasably locks in an adjusted axial position an elongated instrument inserted through said collet. The first and second locking screws are actuated independently of each other. A computer guided probe and a large number of surgical instruments can be slidably inserted within the ball collets and locked in an adjusted axial position and in a selected orientation.
127 Citations
8 Claims
- 1. A stereotactic apparatus comprising a rigid half circular headclamp, at least three fixation pins carried by said headclamp, spaced from one another and extending inwardly thereof toward the center said headclamp, said fixation pins for application to a patient'"'"'s skull to secure said headclamp on said skull in outwardly spaced position therefrom, a connector carried by one end of said headclamp to firmly secure said headclamp to a patient support surface, an articulated arm having a proximal end and a distal end, an attachment device carried by said proximal end and securing said articulated arm to said headclamp, a double chuck device secured to the distal end of said articulated arm, said articulated arm including arm sections and clampable joints to secure said chuck in any selected spatial position close to said patient'"'"'s skull, said chuck including a body, a ball collet in said body, said ball collet capable of axially guiding an elongated surgical instrument, a first locking device to releasably lock said ball collet in a selected orientation and a second locking device to releasably lock said elongated instrument in a selected axial position, said first and second locking devices actuated independently of each other.
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8. A stereotactic guide apparatus for use with a neurosurgical headclamp comprising an articulated arm having a proximal end and a distal end, an attachment device carried by said proximal end of said articulated arm for securing said arm to said headframe, a chuck device secured to the distal end of said articulated arm, said arm including arm sections and clampable joints to secure said chuck in a plurality of spatial positions close to a patient'"'"'s head, said chuck including a body, a ball collet freely rotatable about its center in said body, said ball collet capable of axially guiding an elongated surgical instrument therethrough, a first locking device to releasably lock said ball collet in a selected orientation and a second locking device to releasably lock said elongated instrument in a selected axial position, said first and second locking devices actuated independently of each other.
Specification