US6436115B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced ultrasonic blade including a plurality of balance asymmetries
Assignee: Individual
•
Filing: 2000-09-12
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Granted: 2002-08-20
•
Expires: 2020-09-12
Abstract
Abstract A balanced ultrasonic surgical instrument is described wherein the balanced ultrasonic surgical instrument includes an ultrasonic transmission rod and an ultrasonically actuated blade attached to the distal end of the ultrasonic transmission rod. According to the present invention, the ultrasonically actuated blade includes a treatment portion and a balance portion. The treatment portion has a functional feature such as, for example, a curved blade which makes the treatment portion asymrnetric. The balance portion includes at least first and second asymmetric balance features designed and positioned to balance out any undesirable torque generated by the treatment portion. The balance portion further extends generally from a node point on the ultrasonic transmission rod to the proximal end of the treatment portion.
Inventors
- 👤 Jean M. Beaupre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:06
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320068; A61B2017/320069; A61B2017/320072; A61B2017/320074; A61B2017/320077; A61B2017/320089
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
148 words
An end effector for use in an ultrasonic surgical instrument, wherein said end effector comprises: an ultrasonic transmission rod having a proximal end and a distal end; an ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said ultrasonically actuated blade comprises: a distal end; a proximal end connected to said transmission rod at a longitudinal vibratory node point; a treatment portion including at least one functional asymmetry; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said ultrasonic transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade, wherein said first and second balance asymmetries are positioned to counter torque created at said proximal end of said blade by said functional asymmetry.
Claim 2
Dependent Claim
148 words
An end effector for use in an ultrasonic surgical instrument, wherein said end effector comprises: an ultrasonic transmission rod having a proximal end and a distal end; an ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said ultrasonically actuated blade comprises: a distal end; a proximal end connected to said transmission rod at a longitudinal vibratory node point; a treatment portion including at least one functional asymmetry; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said ultrasonic transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade, wherein said first and second balance asymmetries are positioned to counter torque created at said proximal end of said blade by said functional asymmetry.
Claim 3
Dependent Claim
31 words
An end effector according to claim 1 , wherein said first and second balance asymmetries are positioned such that transverse vibrations in said ultrasonic transmission rod are substantially equal to zero.
Claim 4
Dependent Claim
19 words
An end effector according to claim 1 wherein said transmission rod has a balance ratio of less than 1:10.
Claim 5
Dependent Claim
19 words
An end effector according to claim 3 wherein said balance ratio of said transmission rod is less than 1:200.
Claim 6
Dependent Claim
132 words
An end effector for use in an ultrasonic surgical instrument, wherein said end effector comprises: an ultrasonic transmission rod having a proximal end and a distal end; a balanced ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said balanced ultrasonically actuated blade comprises: a distal end; a proximal end; a curved treatment portion; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said ultrasonic transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade wherein said balance asymmetries are positioned to counter torque created at said proximal end of said blade by said curved treatment portion.
Claim 7
Dependent Claim
132 words
An end effector for use in an ultrasonic surgical instrument, wherein said end effector comprises: an ultrasonic transmission rod having a proximal end and a distal end; a balanced ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said balanced ultrasonically actuated blade comprises: a distal end; a proximal end; a curved treatment portion; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said ultrasonic transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade wherein said balance asymmetries are positioned to counter torque created at said proximal end of said blade by said curved treatment portion.
Claim 8
Dependent Claim
59 words
An end effector according to claim 5 wherein said end effector has a top surface and a bottom surface, said top surface being concave in said treatment portion and said bottom surface being convex in said treatment region, said first balance asymmetry being positioned on said top surface and said second balance asymmetry being positioned on said bottom surface.
Claim 9
Dependent Claim
25 words
An end effector according to claim 6 wherein said first balance asymmetry comprises a first flat region on said top surface of said balance portion.
Claim 10
Dependent Claim
25 words
An end effector according to claim 7 wherein said second balance asymmetry comprises a second flat region on said bottom surface of said balance portion.
Claim 11
Dependent Claim
57 words
An end effector according to claim 8 wherein said blade is bisected by a plane of symmetry, said blade being substantially symmetrical on either side of said plane of symmetry, said first balance asymmetry comprising a flat surface on said top surface of said blade wherein said flat surface is substantially perpendicular to said plane of symmetry.
Claim 12
Dependent Claim
36 words
An end effector according to claim 9 wherein said second balance asymmetry comprises a second flat surface on said bottom surface of said blade, wherein said flat surface is substantially perpendicular to said plane of symmetry.
Claim 13
Dependent Claim
25 words
An end effector according to claim 6 wherein at least one of said first and second balance asymmetries comprises a notch in said balance region.
Claim 14
Dependent Claim
29 words
An end effector according to claim 6 wherein at least one of said first and second balance asymmetries comprises a raised region including mass added to said balance region.
Claim 15
Dependent Claim
163 words
An ultrasonic surgical instrument including a balanced end effector, wherein said end effector comprises: a handle including an ultrasonic handpiece; an ultrasonic transmission rod having a proximal end and a distal end, wherein said proximal end is operatively connected to said handpiece; an ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said ultrasonically actuated blade comprises: a distal end; a proximal end connected to said transmission rod at a longitudinal vibratory node point; a treatment portion including at least one functional asymmetry; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said ultrasonic transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade, wherein said first and second balance asymmetries are positioned to counter torque created at said proximal end of said blade by said functional asymmetry.
Claim 16
Dependent Claim
163 words
An ultrasonic surgical instrument including a balanced end effector, wherein said end effector comprises: a handle including an ultrasonic handpiece; an ultrasonic transmission rod having a proximal end and a distal end, wherein said proximal end is operatively connected to said handpiece; an ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said ultrasonically actuated blade comprises: a distal end; a proximal end connected to said transmission rod at a longitudinal vibratory node point; a treatment portion including at least one functional asymmetry; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said ultrasonic transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade, wherein said first and second balance asymmetries are positioned to counter torque created at said proximal end of said blade by said functional asymmetry.
Claim 17
Dependent Claim
32 words
An ultrasonic surgical instrument according to claim 13 , wherein said first and second balance asymmetries are positioned such that transverse vibrations in said ultrasonic transmission rod are substantially equal to zero.
Claim 18
Dependent Claim
19 words
An end effector according to claim 13 wherein said transmission rod has a balance ratio of less than 1:10.
Claim 19
Dependent Claim
19 words
An end effector according to claim 15 wherein said balance ratio of said transmission rod is less than 1:200.
Claim 20
Dependent Claim
111 words
An ultrasonic surgical instrument comprising: a handle; an ultrasonic transmission rod having a proximal end and a distal end wherein said proximal end is operatively connected to said handle; a balanced ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said balanced ultrasonically actuated blade comprises: a distal end; a proximal end; a curved treatment portion; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade.
Claim 21
Dependent Claim
111 words
An ultrasonic surgical instrument comprising: a handle; an ultrasonic transmission rod having a proximal end and a distal end wherein said proximal end is operatively connected to said handle; a balanced ultrasonically actuated blade attached to said distal end of said transmission rod, wherein said balanced ultrasonically actuated blade comprises: a distal end; a proximal end; a curved treatment portion; and a balance portion including first and second balance asymmetries wherein said balance portion extends from said distal end of said transmission rod to a proximal end of said treatment portion and said treatment portion extends from a distal end of said balance portion to said distal end of said blade.
Claim 22
Dependent Claim
59 words
An ultrasonic surgical instrument according to claim 17 wherein said blade has a top surface and a bottom surface, said top surface being concave in said treatment portion and said bottom surface being convex in said treatment region, said first balance asymmetry being positioned on said top surface and said second balance asymmetry being positioned on said bottom surface.
Claim 23
Dependent Claim
26 words
An ultrasonic surgical instrument according to claim 18 wherein said first balance asymmetry comprises a first flat region on said top surface of said balance portion.
Claim 24
Dependent Claim
26 words
An ultrasonic surgical instrument according to claim 19 wherein said second balance asymmetry comprises a second flat region on said bottom surface of said balance portion.
Claim 25
Dependent Claim
58 words
An ultrasonic surgical instrument according to claim 18 wherein said blade is bisected by a plane of symmetry, said blade being substantially symmetrical on either side of said plane of symmetry, said first balance asymmetry comprising a flat surface on said top surface of said blade wherein said flat surface is substantially perpendicular to said plane of symmetry.
Claim 26
Dependent Claim
37 words
An ultrasonic surgical instrument according to claim 21 wherein said second balance asymmetry comprises a second flat surface on said bottom surface of said blade, wherein said flat surface is substantially perpendicular to said plane of symmetry.
Claim 27
Dependent Claim
26 words
An ultrasonic surgical instrument according to claim 18 wherein at least one of said first and second balance asymmetries comprises a notch in said balance region.
Claim 28
Dependent Claim
30 words
An ultrasonic surgical instrument according to claim 18 wherein at least one of said first and second balance asymmetries comprises a raised region including mass added to said balance region.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-08-19 | 2006-02-18 | 2006-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-08-19 | 2010-02-18 | 2010-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-08-19 | 2014-02-18 | 2014-08-20 | $7700.00 | Window Closed / Lapsed |