EP0830845A1
Expired / Lapsed
EP
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Ultrasonic dissector
Assignee: United States Surgical Corp
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Filing: 1997-09-12
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Granted: —
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Expires: 2017-09-12
Abstract
Abstract An ultrasonic surgical instrument for dissection and coagulation of tissue is provided. The surgical instrument includes a vibration coupler supported within a housing and operably connected to an ultrasonic generator. An angled blade member is connected to the distal end of the vibration coupler to conduct high frequency vibration from the ultrasonic generator to the blade member. A clamp member is positioned adjacent to the blade member and is movable from a first position to a second approximated position. The clamp member and angled blade member combine to enhance contact between the tissue and the blade member during operation of the instrument to improve the performance of the instrument.
Inventors
- 👤 Jeffrey S. White
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320068; A61B17/320092; A61B17/28; A61B17/2812; A61B17/2833; A61B2017/2837; A61B17/29; A61B2017/2926; A61B2017/2932; A61B2017/2944; A61B2017/2946; A61B2017/320072; A61B2017/320074; A61B2017/320075; A61B2017/320094; A61B2017/320095
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
A surgical cutting instrument comprising: (a) a vibration coupler connectable to an
ultrasonic generator and defining a longitudinal axis; and (b) a blade member positioned adjacent a distal
end portion of the vibration coupler and adapted to vibrate
with the vibration coupler, the blade member having a planar
cutting surface disposed at an acute angle to the
longitudinal axis during vibration of the vibration coupler.
Claim 2
Dependent Claim
55 words
A surgical cutting instrument according to Claim 1,
further comprising a clamp positioned adjacent the blade
member, the clamp having a tissue engaging surface movable
between an open position spaced from the planar cutting
surface of the blade member and a clamped position wherein
the tissue engaging surface is moved towards the planar
cutting surface.
Claim 3
Dependent Claim
35 words
A surgical instrument according to any of the
preceding claims, further including an actuation rod operably
connected to the clamp, the actuation rod being movable to
move the clamp between the first and second positions.
Claim 4
Dependent Claim
23 words
A surgical instrument according to any of the
preceding claims, wherein the clamp is moved linearly from
the open to the clamped position.
Claim 5
Dependent Claim
23 words
A surgical instrument according to any of the
preceding claims, wherein the clamp is pivoted from the open
position to the clamped position.
Claim 6
Dependent Claim
26 words
A surgical instrument according to any of the
preceding claims, further comprising a biasing mechanism for
biasing the clamp member with respect to the blade member.
Claim 7
Dependent Claim
29 words
A surgical instrument according to any of the
preceding claims, further including a retaining mechanism to
selectively retain the clamp at multiple locations between
the first and clamped positions.
Claim 8
Dependent Claim
52 words
A surgical instrument according to any of the
preceding claims, wherein the retaining mechanism includes a
rack positioned on the actuation rod and wherein the
retaining mechanism further includes a retaining member
movable into operable engagement with the rack to retain the
clamp in multiple locations between the open and clamped
positions.
Claim 9
Dependent Claim
23 words
A surgical instrument according to any of the
preceding claims, further including a housing, wherein the
clamp is pivotably secured to the housing.
Claim 10
Dependent Claim
34 words
A surgical instrument according to any of the
preceding claims, wherein the angle of the plane defined by
the cutting surface of the blade member is from about 30
degrees to about 70 degrees.
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