Hand-held instruments that access interior body regions
First Claim
Patent Images
1. A tool comprising:
- a trocar including a handle, a lumen extending through the trocar and the trocar handle, the lumen accommodating passage of a functional instrument, a cannula including a cannula handle and being sized and configured to accommodate passage of the trocar, the trocar engaging the cannula to form a composite instrument, the trocar handle mating with the cannula handle to form a composite handle when the trocar is engaged with the cannula.
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Abstract
Apparatus and methods provide a tool comprising a trocar and a cannula in which the trocar engages the cannula to form a composite instrument. The trocar includes a handle and a lumen through the trocar and the trocar handle that accommodates passage of a functional instrument, such as a stylet, guidewire, or spinal needle assembly. The cannula includes a handle and is sized and configured to accommodate passage of the trocar. The trocar handle mates with the cannula handle to form a composite handle when the trocar is engaged with the cannula.
219 Citations
15 Claims
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1. A tool comprising:
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a trocar including a handle, a lumen extending through the trocar and the trocar handle, the lumen accommodating passage of a functional instrument, a cannula including a cannula handle and being sized and configured to accommodate passage of the trocar, the trocar engaging the cannula to form a composite instrument, the trocar handle mating with the cannula handle to form a composite handle when the trocar is engaged with the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of manipulating an instrument that, in use, accesses bone comprising the steps of
providing a guide instrument, inserting the guide instrument through soft tissue to a target bone treatment site, providing a trocar including a first handle and having a lumen extending through the trocar and the handle accommodating passage of the guide instrument, providing a cannula including a handle and being sized and configured to accommodate passage of the trocar, the trocar engaging the cannula to form a composite instrument and the trocar handle mating with the cannula handle to form a composite handle when the trocar engages the cannula, passing the trocar through the cannula to engage the trocar with the cannula to form the composite instrument, mating the trocar handle with the cannula handle to form the composite handle, passing the composite instrument over the guide instrument, manipulating the composite instrument over the guide instrument to the targeted bone treatment site.
Specification