PROTECTIVE SLEEVE AND ASSOCIATED SURGICAL METHOD
An ultrasonic surgical instrument includes an elongate substantially rigid probe and an elongate tubular sheath member. The probe is operatively connected at a proximal end to a source of ultrasonic mechanical vibrations and has a distal tip configured for transmitting ultrasonic vibration energy into organic tissues. The probe longitudinally traverses the sheath member. The sheath member has a distal edge with a first portion on one side of the probe and a second portion on an opposite side of the probe. The first portion of the distal edge of the sheath member is disposed substantially closer than the second portion of the sheath's distal edge to the distal tip of the probe. The second portion of the distal edge is so spaced from the distal tip as to permit effective visualization of the distal tip during use of the instrument.
1 - 6 . (canceled)
7 . A surgical method comprising:
providing an elongate substantially rigid probe operatively connected at a proximal end to a source of ultrasonic mechanical vibrations, said probe having a distal tip configured for transmitting ultrasonic vibration energy into organic tissues;
providing said probe with an elongate tubular sheath member, wherein said probe longitudinally traverses said sheath member, said sheath member having a distal edge with a first portion on one side of said probe and a second portion on an opposite side of said probe, said first portion of said distal edge being disposed substantially closer than said second portion of said distal edge to said distal tip of said probe, said second portion of said distal edge being so spaced from said distal tip as to permit effective visualization of said distal tip during use of said instrument;
inserting a distal end portion of said probe with said sheath into a patient;
inserting a distal end portion of an endoscope into the patient;
positioning said probe, said sheath and said endoscope so that said endoscope is located on the same side of said probe as said second portion of said distal edge;
utilizing said endoscope to visualize said distal tip distally of said second portion of said distal edge of said sheath;
during the utilizing said endoscope to visualize said distal tip, bringing said distal tip into contact with organic tissue of the patient and energizing said probe with ultrasonic vibration energy to effectuate a surgical operation on said organic tissue under visualization via said endoscope.
8 . A surgical method comprising:
inserting an endoscope into a patient;
inserting an ultrasonic probe into the patient, said probe having a distal tip and being surrounded by a sheath, said sheath having a distal edge with a recess defining a distal edge portion that is spaced from said distal tip of said probe to allow visualization of said distal end; and
orienting said sheath about said probe and relative to said endoscope so that said distal tip of said probe is visible through said recess via said endoscope.