Ultrasonic surgical instruments having offset blades
First Claim
Patent Images
1. An ultrasonic surgical instrument comprising:
- a handle assembly comprising a handle body and a clamp actuation member pivotably coupled to the handle body;
a shaft assembly connected to the handle assembly;
an ultrasonic transducer having a central transducer axis;
an acoustic horn acoustically coupled to the ultrasonic transducer;
an ultrasonic transmission waveguide acoustically coupled to the acoustic horn, the ultrasonic transmission waveguide having a central waveguide axis and comprising a compound curvature component, the compound curvature component comprising a proximal curved portion, a linear portion, and a distal curved portion, the linear portion positioned in between the proximal curved portion and the distal curved portion;
an ultrasonic surgical blade acoustically coupled to the distal curved portion of the ultrasonic transmission waveguide and having a central blade axis that is parallel to the central waveguide axis; and
an end-effector connected to the shaft assembly, the end-effector comprising the ultrasonic surgical blade and a clamp arm pivotably coupled to the shaft assembly, wherein the ultrasonic transducer and the acoustic horn are located within the handle body.
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Abstract
Ultrasonic surgical instruments having angularly and/or linearly off-set blades are described. The angularly and/or linearly off-set blades may facilitate increased surgical site access, visibility, and manipulability.
2268 Citations
19 Claims
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1. An ultrasonic surgical instrument comprising:
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a handle assembly comprising a handle body and a clamp actuation member pivotably coupled to the handle body; a shaft assembly connected to the handle assembly; an ultrasonic transducer having a central transducer axis; an acoustic horn acoustically coupled to the ultrasonic transducer; an ultrasonic transmission waveguide acoustically coupled to the acoustic horn, the ultrasonic transmission waveguide having a central waveguide axis and comprising a compound curvature component, the compound curvature component comprising a proximal curved portion, a linear portion, and a distal curved portion, the linear portion positioned in between the proximal curved portion and the distal curved portion; an ultrasonic surgical blade acoustically coupled to the distal curved portion of the ultrasonic transmission waveguide and having a central blade axis that is parallel to the central waveguide axis; and an end-effector connected to the shaft assembly, the end-effector comprising the ultrasonic surgical blade and a clamp arm pivotably coupled to the shaft assembly, wherein the ultrasonic transducer and the acoustic horn are located within the handle body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An ultrasonic surgical instrument comprising:
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a handle assembly comprising a handle body and a clamp actuation member pivotably coupled to the handle body; a shaft assembly connected to the handle assembly; an ultrasonic transducer; an acoustic horn acoustically coupled to the ultrasonic transducer; an ultrasonic transmission waveguide acoustically coupled to the acoustic horn, the ultrasonic transmission waveguide having a central waveguide axis; a compound curvature component comprising a proximal curved portion, a linear portion, and a distal curved portion, the linear portion positioned in between the proximal curved portion and the distal curved portion, the compound curvature component coupled to the ultrasonic transmission waveguide by the proximal curved portion, an ultrasonic surgical blade acoustically coupled to the distal curved portion of the component curvature component and having a central blade axis; and an end-effector connected to the shaft assembly, the end-effector comprising the ultrasonic surgical blade and a clamp arm pivotably coupled to the shaft assembly, wherein the ultrasonic transducer and the acoustic horn are located within the handle body; and wherein the compound curvature component transversely off-sets the ultrasonic surgical blade from the central waveguide axis, such that the central blade axis is parallel to the central waveguide axis. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification