Microstereotactic table

A microstereotactic table usable with a surgical instrument for providing an access to a target of interest of a living subject, comprising:

• (a) a planar plate member having a first surface, an opposite, second surface, a body portion defined therebetween;
• (b) a first leg member removably engaged with the planar plate member;
• (c) a second leg member removably engaged with the planar plate member;
• and
• (d) a third leg member removably engaged with the planar plate member, wherein the first, second and third leg members are positioned such that each of them is located at an apex of a triangle Δ, respectively, wherein the first leg member and the second leg member define a first line S1, the second leg member and the third leg member define a second line S2, and the third leg member and the first leg member define a third line S3, and wherein the triangle Δ is defined by the first line S1, the second line S2, and the third line S3,
• wherein the planar plate member defines a passage between the first surface and the second surface of the body portion and along a longitudinal axis A, wherein cross-sectionally the center of the passage is located inside the triangle Δ, and wherein the passage is configured, in operation, to be coincided along a planned trajectory and allow a surgical instrument to pass through the passage to reach the target of interest of the living subject, and
• wherein each of the first, second and third leg members comprises:
• a base member having a first end, and an opposite, second end, a body portion defined between the first and second ends, a cap portion formed proximate to the first end, a bottom portion formed proximate to the second end, a bore formed through the body portion along its longitudinal axis, a gripper, and a thumbscrew that is removably received in the bore for tightening the gripper, the body portion having an opening formed therein and extending longitudinally from the second end towards to the first end, the bottom portion having a partially spherical recess formed therein, and the gripper being received in the opening of the body portion in the bottom portion;
• and
• an extended member having a first end, and an opposite, second end, a body portion defined therebetween, and an at least partially spherical top portion formed at the first end,
• wherein the base member and the extended member are configured such that the extended member is three-dimensionally rotatably engaged at its first end with the base member at the second end of the base member;
• and
• wherein the gripper has a first member and a second member, each member having a sloped top portion, a hook portion projecting away from the sloped top portion, and a pin-hole formed therebetween, configured to allow it to be received in the opening of the body portion of the base member of the leg member such that the first member and the second member are symmetrical about the longitudinal axis, and
• wherein as assembled, a first pin and a second pin are utilized to penetrate through the pin-holes of the first and second members, respectively, to pin the gripper to the leg member, and the thumbscrew is removably received in the bore of the base member such that the tip portion of the thumbscrew penetrates into therebetween the sloped top portions of the first and second members and forces the sloped top portions of the first and second members apart, thereby, resulting in the bottom hook portions of the first and second members moving towards each other to grip the at least partially spherical top portion of the extended member.