Circular bone tunneling device
An adjustable suture passer for use in arthroscopic surgery is disclosed. In a preferred embodiment, the adjustable suture passer comprises a head that describes a semicircular arc, an elongate body, a support element, and driving and control mechanisms. The head is adapted to accommodate a surgical needle and a guide wire. When the adjustable suture passer is activated, the needle is driven with sufficient force to penetrate bone. Use of the adjustable suture passer thus enables surgical attachment of soft tissue to bone without any necessity for a separate anchor.
1. A circular bone tunneling device, for use in arthroscopic surgery, comprising:
a hollow elongate body comprising a hollow elongate body head, said hollow elongate body head enclosing a surgical needle adapted to tunnel through a bone along a circular path defined as a rigid circular arc;
an extendable and retractable support element, movable between at least one extended configuration and at least one retracted configuration in which a distal end of said support element is located adjacent to a proximal end of said hollow elongate body head;
a support element driving mechanism, adapted, upon activation of a support element control, to drive the motion of said support element; and
at least one support element control adapted to control the movements of said support element driving mechanism, said support element control comprising:
a threaded rod;
a rotatable handle with a threaded orifice through which said threaded rod passes;
a quick release pin having an engaged configuration and a disengaged configuration, adapted to permit motion of said threaded rod when in said engaged configuration and to prevent motion of said threaded rod when in said disengaged configuration; and,
a slider,
said support element including a portion which is adapted to be located along said path defined by said rigid circular arc,
said support element and said hollow elongate body head being adapted to engage said bone at at least two points along the circumference of said bone.
2. The circular bone tunneling device according to claim 1 , wherein said surgical needle is a rigid surgical needle.
3. The circular bone tunneling device according to claim 1 additionally comprising a rigid circular hollow tube adapted to be reversibly attached to said needle and to carry at least one guide wire, said rigid circular hollow tube movably disposed at least partially within said hollow body such that said rigid circular hollow tube can move through an orifice in said hollow elongate body head.
4. The circular bone tunneling device according to claim 3 , additionally comprising:
a rigid circular hollow tube driving mechanism operative to control the motion of said rigid circular hollow tube; and
at least one rigid circular hollow tube control adapted to control the movements of said rigid circular hollow tube driving mechanism.
5. The circular bone tunneling device according to claim 1 , wherein said surgical needle is sufficiently rigid so that its shape is maintained as it penetrates said bone along said circular arc.
6. The circular bone tunneling device according to claim 1 , additionally comprising a surgical needle driving mechanism operative to control the motion of said surgical needle.
7. The circular bone tunneling device according to claim 6 , wherein said surgical needle driving mechanism is operated independently of said support element.
8. The circular bone tunneling device according to claim 6 , wherein upon activation of said surgical needle driving mechanism, said surgical needle is moved along said circular path to penetrate said bone.
9. The circular bone tunneling device according to claim 1 , wherein the extendable and retractable support element is adapted to reach, upon extension, a predetermined location at which it intersects said circular path.
10. The circular bone tunneling device according to claim 1 , additionally comprising a handle adapted for driving said surgical needle to tunnel through said bone along said circular path.
11. The circular bone tunneling device according to claim 1 , further incorporating an indicator for indicating the extent of travel, along said arc, of said surgical needle.