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Shielded-energy-transmitting-surgical-instrument-and-methods-therefor

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Shielded energy transmitting surgical instrument and methods therefor

Details

Inventors: Yoon, InBae;
Assignee:
Primary Examiner: Pellegrino; Stephen C.
Assistant Examiner: Peffley; Michael
Attorney, Agent or Firm:

A shielded energy transmitting surgical instrument for treating anatomical tissue with energy includes an energy transmitting member having a distal end for contacting tissue to be treated, a shield for shielding the distal end of the energy transmitting member and a hub mounting the energy transmitting member and the shield. The shield is movable, automatically in response to a force from tissue contact or manually, between an extended position protecting the distal end of the energy transmitting member and a retracted position wherein the distal end of the energy transmitting member is exposed for contact with the tissue. A source of energy supplies energy to the distal end of the energy transmitting member to treat the tissue, and the shield is movable thereafter toward the extended position to remove tissue from and protect the distal end of the energy transmitting member. A method of treating anatomical tissue with energy incudes the steps of moving the shield of the energy transmitting surgical instrument from the extended position to the retracted position to expose the distal end of the energy transmitting member, positioning the distal end of the energy transmitting member adjacent tissue to be treated, transmitting energy to the distal end of the energy transmitting member to treat the tissue and moving the shield to the extended position to remove tissue from and protect the distal end of the energy transmitting member.

DETAILED DESCRIPTION Accordingly, it is a primary object of the present invention to overcome the above mentioned disadvantages of prior art instruments and methods of treating tissue with energy endoscopically.
Another object of the present invention is to provide an energy transmitting surgical instrument having a shield for protecting an energy transmitting member of the instrument such that contact with the energy transmitting member can be prevented.
A further object of the present invention is to provide a shielded energy transmitting surgical instrument wherein the shield is movable between an extended position protecting a distal end of the energy transmitting member and a retracted position wherein the distal end of the energy transmitting member is exposed.
It is also an object of the present invention to provide a shielded energy transmitting surgical instrument wherein the shield is movable automatically from an extended position disposed beyond a distal end of the energy transmitting member to a retracted position wherein the distal end of the energy transmitting member is exposed in response to a force from tissue contact at a distal end of the instrument.
An additional object of the present invention is to provide a shielded energy transmitting surgical instrument wherein the shield is movable manually from an extended position protecting the distal end of the energy transmitting member to a retracted position exposing the distal end of the energy transmitting member to allow contact with tissue to be treated.
Yet another object of the present invention is to provide an energy transmitting surgical instrument with a shield for wiping the distal end of the energy transmitting member free of tissue upon movement of the shield between the retracted and extended positions.
A still further object of the present invention is to provide a shielded energy transmitting surgical instrument having an energy transmitting member for penetrating a wall of an anatomical cavity to position a portal sleeve therein and a shield movable to an extended position protecting the energy transmitting member in response to introduction of the portal sleeve into the cavity and movable thereafter to a retracted position to expose the energy transmitting member to treat tissue within the cavity

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