Oscillating, steerable, surgical burring tool and method of using the same
First Claim
1. A surgical apparatus for providing oscillating, high speed burring of tissue comprising:
- a handpiece;
an oscillating burr;
an elongate arthroscopic catheter connected to and extending distally from the handpiece and terminating in a flexible or hinged variably curved portion which itself terminates with the oscillating burr;
a flexible drive shaft assembly coupled to the burr;
a motive source connected via the drive shaft assembly to the burr, which drive shaft assembly is axially disposed in the catheter;
at least the distal portion of the drive shaft assembly being radially flexible to accommodate the flexibility of the flexible or hinged portion of the catheter.
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Accused Products
Abstract
The invention is an oscillating, high speed burring instrument comprised of a handpiece, an elongate arthroscopic catheter extending distally from handpiece and terminating in a flexible or hinged portion which itself terminates with an oscillating burr. At least the distal portion of torsional drive shaft is radially flexible to accommodate the flexibility of the flexible or hinged portion of the catheter. A high speed oscillation of the burr is employed effective for cutting or abrading bone, which is typically oscillated at 10 kHz or higher. The burr is oscillated over a substantial arc, namely a majority portion of a full circle. The burr is not shielded in any manner and is fully exposed to the operational theater. The burr cuts or abrades bone or hard matter, while leaving softer tissues substantially or entirely undamaged.
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Citations
26 Claims
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1. A surgical apparatus for providing oscillating, high speed burring of tissue comprising:
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a handpiece;
an oscillating burr;
an elongate arthroscopic catheter connected to and extending distally from the handpiece and terminating in a flexible or hinged variably curved portion which itself terminates with the oscillating burr;
a flexible drive shaft assembly coupled to the burr;
a motive source connected via the drive shaft assembly to the burr, which drive shaft assembly is axially disposed in the catheter;
at least the distal portion of the drive shaft assembly being radially flexible to accommodate the flexibility of the flexible or hinged portion of the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of oscillating, a high speed surgical burr comprising:
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providing a motive source;
connecting the motive source via a drive shaft assembly to the burr; and
oscillating the burr at a oscillatory rate effective for cutting or abrading bone over a portion of a full circle so that the burr cuts or abrades bone or hard matter, while leaving softer tissues substantially or entirely undamaged. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of oscillating, a high speed surgical burr comprising:
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providing a motive source;
connecting the motive source via a drive shaft assembly to the burr; and
oscillating the burr at a oscillatory rate at 10 kHz or higher over a majority portion of a full circle so that the burr cuts or abrades bone or hard matter, while leaving softer tissues substantially or entirely undamaged with a burr which is unshielded and fully exposed in the operational theater, which is capable cutting with the burr virtually all directions without substantial impediment, which is cooled and cleared by fluid irrigation and fluid, and from which debris is removed by suction without hindrance.
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Specification