Balanced ultrasonic blade including a plurality of balance asymmetries
First Claim
1. 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.
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Accused Products
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.
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Citations
24 Claims
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1. An end effector for use in an ultrasonic surgical instrument, wherein said end effector comprises:
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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. - View Dependent Claims (2, 3, 4)
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5. An end effector for use in an ultrasonic surgical instrument, wherein said end effector comprises:
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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. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. An ultrasonic surgical instrument including a balanced end effector, wherein said end effector comprises:
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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. - View Dependent Claims (14, 15, 16)
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17. An ultrasonic surgical instrument comprising:
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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. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification