BONE REMOVAL UNDER DIRECT VISUALIZATION
First Claim
1. A sheath comprising:
- a body including a proximal end and a distal end, the body further including;
a first passageway extending, longitudinally, between the proximal and distal ends of the body;
a second passageway extending, longitudinally, from the distal end of the body towards the proximal end of the body and defining an axis of rotation of a bone removal tool;
wherein the first and second passageways being spaced apart such that the axis of rotation of the bone removal tool is offset from the centerline of a bone tunnel;
wherein a working length of the body has a diameter smaller than the diameter of the bone tunnel; and
an inlet disposed at the proximal end of the body through which inflow fluid is provided.
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0 Petitions
Accused Products
Abstract
An approach to removing necrotic bone under direct visualization is provided. To remove bone and to watch it being removed at the same time, one example uses an endoscope and bone removal tool assembled together by a sheath. The sheath includes separate passageways for the endoscope and bone removal tool. A surgeon uses the sheath to insert the endoscope and bone removal tool together into the bone tunnel. The passageways are spaced apart such that an axis of rotation of the bone removal tool is offset from the centerline of the bone tunnel. The endoscope remains in the bone tunnel while the surgeon removes bone with the bone removal tool. Advantageously, the surgeon watches the bone removal process as it is happening making the process less tedious and less time consuming.
30 Citations
25 Claims
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1. A sheath comprising:
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a body including a proximal end and a distal end, the body further including; a first passageway extending, longitudinally, between the proximal and distal ends of the body; a second passageway extending, longitudinally, from the distal end of the body towards the proximal end of the body and defining an axis of rotation of a bone removal tool; wherein the first and second passageways being spaced apart such that the axis of rotation of the bone removal tool is offset from the centerline of a bone tunnel; wherein a working length of the body has a diameter smaller than the diameter of the bone tunnel; and an inlet disposed at the proximal end of the body through which inflow fluid is provided. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising :
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a sheath including; a body comprising a proximal end and a distal end, the body further comprising; a first passageway extending, longitudinally, between the proximal and distal ends of the body; a second passageway extending, longitudinally, from the distal end of the body towards the proximal end of the body and defining an axis of rotation of a bone removal tool; wherein the first and second passageways being spaced apart such that the axis of rotation of the bone removal tool is offset from the centerline of the bone tunnel; wherein a working length of the body has a diameter smaller than the diameter of the bone tunnel; and an inlet disposed at the proximal end of the body through which inflow fluid is provided; and a visualization device received in the first passageway of the sheath. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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- 17. The system of claim 17 wherein the inlet port is in the shape of a handle.
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19. A bone removal tool comprising:
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a shaft having a length, a portion of which is supported by a passageway of a sheath; and a working end at an end of the shaft. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification