Method of manufacturing an ultrasonic tool
First Claim
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1. A method of manufacturing an aspirating tool for use with an apparatus for ultrasonically fragmenting and aspirating tissue comprising the steps of:
- a) machining a piece of metal stock to form a body having a longitudinal axis and first an second ends, and a probe portion which tapers inwardly toward the second end;
b) drilling a throughbore from the first end of the body to the second end of the body;
c) forming a series of threads adjacent the first end of the body;
d) masking the series of threads without masking the probe portion; and
e) applying a titanium nitride coating onto the probe portion of the body.
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Abstract
An ultrasonic surgical apparatus for fragmenting and aspirating tissue is disclosed. The apparatus includes a handpiece which encloses a transducer, an aspirating tool, and a connector body connecting the aspirating tool and the transducer. The aspirating tool includes a elongated boy having a centrally located throughbore, a hexagon engagement portion, a threaded proximal end and a distal tip. Methods of manufacturing aspirating tools having small and large diameter throughbores adapted for use with a common handpiece are also disclosed.
273 Citations
20 Claims
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1. A method of manufacturing an aspirating tool for use with an apparatus for ultrasonically fragmenting and aspirating tissue comprising the steps of:
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a) machining a piece of metal stock to form a body having a longitudinal axis and first an second ends, and a probe portion which tapers inwardly toward the second end;
b) drilling a throughbore from the first end of the body to the second end of the body;
c) forming a series of threads adjacent the first end of the body;
d) masking the series of threads without masking the probe portion; and
e) applying a titanium nitride coating onto the probe portion of the body. - View Dependent Claims (2, 3, 4)
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5. A method for manufacturing an ultrasonic tool for use with an ultrasonic treatment apparatus, comprising the steps of:
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providing an elongated tool member defining a longitudinal axis, the tool member including a connecting portion having an external thread for connecting to the ultrasonic apparatus and a probe portion extending from the connecting portion for transmitting energy to tissue;
forming a longitudinal bore in at least the probe portion;
applying a wear resistive coating to the probe portion while preventing application of the wear resistive coating to the external thread of the connecting portion; and
masking the connecting portion prior to the step of applying. - View Dependent Claims (6, 7, 8)
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9. A method for manufacturing an ultrasonic tool for use with an ultrasonic treatment apparatus, comprising the steps of:
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providing an elongated tool member defining a longitudinal axis, the tool member including a connecting portion having an external thread for connecting to the ultrasonic apparatus and a probe portion extending from the connecting portion for transmitting energy to tissue;
forming a longitudinal bore in at least the probe portion;
applying a wear resistive coating to the probe portion while preventing application of the wear resistive coating to the external thread of the connecting portion; and
working the elongated tool member whereby a cross-section of a wall of the probe portion gradually and continually decreases along an entire length of the probe portion from a first end adjacent the connecting portion to a second end displaced from the connecting portion.
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10. A method of manufacturing an aspirating tool for use with an apparatus for ultrasonically fragmenting and aspirating tissue, comprising the steps of:
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a) machining piece of metal stock to form a tool body having a longitudinal axis and a body portion which tapers inwardly;
b) drilling a fir t bore having a first diameter from a first end of the tool body towards a second end of the tool body partially through the tool body; and
c) drilling a second bore having a second diameter smaller than the first diameter through the second end of the tool body to communicate with the first bore. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification