Device for the introduction of medical items
First Claim
1. A device for the insertion of medical items in a human or animal body comprising:
- a longitudinal member having a first end segment, a second end segment, a longitudinal axis, and an outer surface;
the first end segment including at least a portion having a screw thread extending along the longitudinal axis for anchoring the longitudinal member in bone, the screw thread defining a thread surface;
the second end segment configured for rotatably driving the longitudinal member, the second end segment defining a chamber; and
wherein the first end segment includes self-cutting teeth for cutting into bone, the first end further including at least one slot for distributing fluid implant material in a bone cavity, the slot having at least a portion along the outer surface between the cutting teeth and the second end segment in communication with the chamber.
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Accused Products
Abstract
The invention relates to a device for the introduction of medical items into the human or animal body. The device comprises a longitudinal guide sleeve or member having a first end segment, a second end segment, a longitudinal axis, and an outer surface. The second end segment defines a chamber and includes a drive element, which may be configured to couple to another drive device for rotatably driving the longitudinal member. The first end segment includes a screw thread for anchoring the device to bone such as a pedicle in the spine. The thread defines either a cylindrical or prismatic thread root or thread surface. The first end includes self-cutting teeth and at least one slot that extends along the outer surface between the self-cutting teeth and the second end segment in communication with the chamber.
47 Citations
21 Claims
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1. A device for the insertion of medical items in a human or animal body comprising:
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a longitudinal member having a first end segment, a second end segment, a longitudinal axis, and an outer surface;
the first end segment including at least a portion having a screw thread extending along the longitudinal axis for anchoring the longitudinal member in bone, the screw thread defining a thread surface;
the second end segment configured for rotatably driving the longitudinal member, the second end segment defining a chamber; and
wherein the first end segment includes self-cutting teeth for cutting into bone, the first end further including at least one slot for distributing fluid implant material in a bone cavity, the slot having at least a portion along the outer surface between the cutting teeth and the second end segment in communication with the chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A device for the insertion of medical items in a human or animal body comprising:
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a longitudinal member having a first end segment, a second end segment, and a longitudinal axis;
the first end segment including at least a portion having a screw thread extending along the longitudinal axis for anchoring the longitudinal member, the screw thread defining a thread surface;
the second end segment configured for rotatably driving the longitudinal member, the second end segment defining a chamber; and
wherein the screw thread has a thread gradient A and the thread surface is of length L along the longitudinal axis, wherein further the ratio V of length L to thread gradient A is 0.5≦
V≦
0.875. - View Dependent Claims (17, 18)
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19. A device for the insertion of medical items in a human or animal body comprising:
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a first longitudinal member for inserting an instrument for drilling into a bone, a second longitudinal member for inserting fluid implant material into the bone;
each first and second longitudinal member comprising;
a longitudinal axis and an outer surface;
a first end segment including at least a portion having a screw thread extending along the longitudinal axis for anchoring the longitudinal member, the screw thread defining a thread surface;
a second end segment configured for rotatably driving the longitudinal member, the second end segment defining a chamber; and
wherein the second longitudinal member is positioned relative to the first longitudinal member, and the first end segment of at least one of the first and second longitudinal members includes self-cutting teeth for cutting into bone. - View Dependent Claims (20, 21)
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Specification