US 8,137,371 B2Granted

Long ultrasonic cutting blade formed of laminated smaller blades

AssigneeTyco Healthcare Group LP

InventorDouglas J. Cuny

Life of this patent

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Abstract

An end effector of an ultrasonic surgical instrument is provided, the ultrasonic surgical instrument having a manipulatable structure, a body portion operatively connected to the manipulatable structure and having a distal end, a transducer, and the end effector being supported on the distal end of the body portion, the end effector including a plurality of resonant member elements, each resonant member operatively connected to a transducer of the plurality of transducers for effecting vibrations along the length of the resonant member, and including an operating surface configured to effect tissue dissection, cutting, coagulation, ligation and/or hemostasis, wherein a displacement curve associated with the vibrations of a first one of the plurality of resonant members is offset relative to the displacement curve associated with the vibrations of a second one of the plurality of resonant members.

Claims16

Dependent claims

An end effector for an ultrasonic surgical instrument, comprising:

a first resonant member having a body portion and an operating surface extending distally therefrom;
a second resonant member having a body portion and an operating surface extending distally therefrom;
a first transducer directly connected to the first resonant member, the first transducer configured for effecting vibrations along the operating surface of the first resonant member;
and
a second transducer directly connected to the second resonant member, the second transducer configured for effecting vibrations along the operating surface of the second resonant member,
wherein the first resonant member and the second resonant member are laminated together and are staggered longitudinally relative to one another such that a distal end of the first resonant member and a distal end of the second resonant member are longitudinally spaced apart from one another so that a displacement curve associated with the vibrations of the first resonant member is offset relative to the displacement curve associated with the vibrations of the second resonant member.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/411,633Filed 26 Mar 2009 · continuation
Priority: 11 Oct 2001
Published: US 2009/0182365 A116 Jul 2009
Granted: 20 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61B 17/320068
Surgical cutting instruments: using mechanical vibrations, e.g. ultrasonic
A61B 18/00
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to
A61B 17/320092
Using mechanical vibrations, e.g. ultrasonic: with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
A61B 2017/22015
The ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire:…

Family

Application60/328,597Us provisional application · filed 11 Oct 2001
PCT/US02/32685Parent of this continuation · filed 11 Oct 2002
US 2009/0182365 A1Pre-grant publication · published 16 Jul 2009
Application10/491,023Parent of this continuation
US 2004/0193198 A1Published application
US 8,328,833 B2Related patent
US 8,137,371 B2This patent

From the US filing history. Foreign family members aren’t listed.