Ultrasonic and electrosurgical devices

Abstract

Disclosed are ultrasonic and electrosurgical devices. The disclosed embodiments include ultrasonic blades comprising various grasping features, devices configured to prevent ingress of surgical matter, e.g., fluid and tissue, in the space between an ultrasonic blade and an inner or outer tube distal of the distal seal, alternate closure mechanisms for ultrasonic devices, ultrasonic transducer rotation limiters to limit the rotation of an ultrasonic transducer, ultrasonic transducer rotation systems to provide unlimited continuous rotation of an ultrasonic device, integrated ultrasonic instrument electrically connected to provide RF spot coagulation with an ultrasonic (RF) generator, and coated ultrasonic/RF blades.

1 - 73 . (canceled) 
     
     
         74 . A surgical instrument, comprising:
 an ultrasonic waveguide comprising a proximal end and a distal end, wherein the proximal end is configured to couple to an ultrasonic transducer; and   an ultrasonic blade coupled to the distal end of the waveguide, the ultrasonic blade comprising at least one grasping feature.   
     
     
         75 . The surgical instrument of  claim 74 , wherein the grasping features extend into a body portion of the blade such that the grasping features are recessed within the body of the blade. 
     
     
         76 . The surgical instrument of  claim 74 , wherein the grasping features extend from a body portion of the blade such that the grasping features protrude from the body of the blade. 
     
     
         77 . The surgical instrument of  claim 74 , wherein a plurality of grasping features is distributed over portions of the blade. 
     
     
         78 . The surgical instrument of  claim 77 , wherein the plurality of grasping features is distributed over lateral portions of the blade. 
     
     
         79 . The surgical instrument of  claim 77 , wherein the plurality of grasping features is distributed longitudinally over the blade. 
     
     
         80 . The surgical instrument of  claim 77 , wherein the plurality of grasping features is distributed longitudinally over the blade. 
     
     
         81 . The surgical instrument of  claim 77 , wherein the plurality of grasping features is distributed transversely across the blade. 
     
     
         82 . An ultrasonic blade comprising:
 a body; and   at least one grasping feature projecting from the body.   
     
     
         83 . The ultrasonic blade of  claim 82 , wherein the at least one grasping feature comprises at least one tooth-like element. 
     
     
         84 . The ultrasonic blade of  claim 82 , wherein the at least one grasping feature comprises at least one block-like element. 
     
     
         85 . The ultrasonic blade of  claim 82 , wherein the at least one grasping feature comprises at least one bump-like element. 
     
     
         86 . The ultrasonic blade of  claim 82 , wherein the at least one grasping feature comprises at least one spike-like element. 
     
     
         87 . The ultrasonic blade of  claim 82 , wherein the at least one grasping feature comprises at least one transverse bump-like element. 
     
     
         88 . An ultrasonic blade comprising:
 a body; and   at least one grasping feature recessed into the body.   
     
     
         89 . The ultrasonic blade of  claim 88 , wherein the at least one grasping feature comprises at least one cavity-like element. 
     
     
         90 . The ultrasonic blade of  claim 89 , wherein the at least one cavity-like grasping feature comprises at least one cylindrical cavity-like element extending partially into or all the way through the body. 
     
     
         91 . The ultrasonic blade of  claim 89 , wherein the at least one cavity-like grasping feature comprises at least one conical cavity-like element extending partially into or all the way through the body. 
     
     
         92 . The ultrasonic blade of  claim 88 , wherein the at least one grasping feature comprises at least one transverse trench-like element.