# US 2025/0169844 A1 · Ultrasonic surgical blade for use with ultrasonic surgical instruments > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0169844 A1 - Document ID: US20250169844A1 - Status: Published application - Kind: A1 - Application number: 18/898,058 - Filed: 2024-09-26 - Published: 2025-05-29 - Earliest claimed: 2015-06-17 - Assignees: Cilag GmbH International - Applicants: Cilag GmbH International - Inventors: Jacob S. Gee; Amy L. Marcotte; John A. Weed, III - Web page: https://patentgrep.com/patent/US20250169844A1 ## CPC - A61B 17/320092: {with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw} - A61B 2017/00738: {part of the tool being offset with respect to a main axis, e.g. for better view for the surgeon} - A61B 2017/320075: {single edge blade, e.g. for cutting} - A61B 2017/320077: {double edge blade, e.g. reciprocating} - A61B 2017/320078: {Tissue manipulating surface} - A61B 2017/320094: {additional movable means performing clamping operation} - A61B 2017/320095: {with sealing or cauterizing means} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A surgical instrument includes an ultrasonic transducer, an ultrasonic transmission waveguide extending from the ultrasonic transducer, and an ultrasonic blade acoustically coupled to the ultrasonic transmission waveguide. The ultrasonic blade includes a base and a curved body extending distally from the base. The curved body includes a tissue-treating surface extending on a first side of the curved body and a curved edge extending on a second side of the curved body opposite the first side. The curved edge has a proximal end and a distal end, wherein the proximal end is offset from the distal end in a first direction, wherein the proximal end is offset from the distal end in a second direction, and wherein the first direction is perpendicular to the second direction. ## Claims ### Claim at position 1 1-20. (canceled) ### Claim 21 A surgical instrument, comprising: an ultrasonic transducer; an ultrasonic transmission waveguide extending from the ultrasonic transducer; and an ultrasonic blade acoustically coupled to the ultrasonic transmission waveguide, wherein the ultrasonic blade comprises: a base; a longitudinal axis extending parallel through the base; and a curved body extending distally from the base, wherein the curved body comprises: a distal end offset from the longitudinal axis in a first direction and a second direction different than the first direction; a proximal end opposite the distal end; a first side; a second side opposite the first side; and a curved edge extending on the second side, wherein the curved edge comprises: a first portion curving away from the longitudinal axis at a point adjacent the proximal end; a second portion curving toward the longitudinal axis at a point adjacent the distal end; and a balancing feature comprising a contour line that defines an asymmetry in the curved body. ### Claim 22 (depends on 21) The surgical instrument of claim 21, wherein the curved body further comprises: a blunt tip adjacent the distal end and extending laterally beyond the base. ### Claim 23 (depends on 21) The surgical instrument of claim 21, wherein the curved body further comprises: a tissue-treating surface extending on the first side. ### Claim 24 (depends on 23) The surgical instrument of claim 23, wherein the tissue-treating surface is tapered toward the distal end. ### Claim 25 (depends on 23) The surgical instrument of claim 23, wherein the tissue-treating surface is curved convexly. ### Claim 26 (depends on 23) The surgical instrument of claim 23, further comprising: a clamp member movable relative to the tissue-treating surface to capture tissue therebetween. ### Claim 27 (depends on 23) The surgical instrument of claim 23, wherein the contour line is curved concavely and intersects the tissue-treating surface. ### Claim 28 A surgical instrument, comprising: an ultrasonic transducer; an ultrasonic transmission waveguide extending from the ultrasonic transducer; and an ultrasonic blade acoustically coupled to the ultrasonic transmission waveguide, wherein the ultrasonic blade comprises: a base; a longitudinal axis extending parallel through the base; and a curved body extending distally from the base, wherein the curved body comprises: a distal end offset from the longitudinal axis in a first direction and a second direction different than the first direction; a proximal end opposite the distal end; a first side; a second side opposite the first side; a blunt tip adjacent the distal end and extending laterally beyond the base; a height gradually tapered toward the blunt tip; a width gradually tapered toward the blunt tip; and a curved edge extending on the second side, wherein the curved edge comprises: a first portion curving away from the longitudinal axis at a point adjacent the proximal end; a second portion curving toward the longitudinal axis at a point adjacent the distal end; and a balancing feature comprising a contour line that defines an asymmetry in the curved body. ### Claim 29 (depends on 28) The surgical instrument of claim 28, wherein the curved body further comprises: a tissue-treating surface extending on the first side. ### Claim 30 (depends on 29) The surgical instrument of claim 29, wherein the tissue-treating surface is tapered toward the distal end. ### Claim 31 (depends on 29) The surgical instrument of claim 29, wherein the tissue-treating surface is curved convexly. ### Claim 32 (depends on 29) The surgical instrument of claim 29, further comprising: a clamp member movable relative to the tissue-treating surface to capture tissue therebetween. ### Claim 33 (depends on 29) The surgical instrument of claim 29, wherein the contour line is curved concavely and intersects the tissue-treating surface. ### Claim 34 A surgical instrument, comprising: an ultrasonic transducer; an ultrasonic transmission waveguide extending from the ultrasonic transducer; and an ultrasonic blade acoustically coupled to the ultrasonic transmission waveguide, wherein the ultrasonic blade comprises: a base; a longitudinal axis extending parallel through the base; and a curved portion extending distally from the base, wherein the curved portion comprises: a distal end; a proximal end opposite the distal end; a first face, comprising: a tissue-treating surface; a first side wall intersecting the tissue-treating surface; and a second side wall intersecting the tissue-treating surface; and a second face opposite sides the first face, wherein the second face comprises: a first intermediate wall intersecting the first side wall; a second intermediate wall intersecting the second side wall; a cutting edge extending distally along a length of the curved portion, wherein the cutting edge comprises: a first portion curving away from the longitudinal axis at a point adjacent the proximal end; a second portion curving toward the longitudinal axis at a point adjacent the distal end; and a balancing feature comprising a contour line that defines an asymmetry in the curved portion; and; a first tissue cutting surface; and a second tissue cutting surface intersecting the first tissue cutting surface at the cutting edge. ### Claim 35 (depends on 34) The surgical instrument of claim 34, wherein the tissue-treating surface is tapered toward the distal end. ### Claim 36 (depends on 34) The surgical instrument of claim 34, wherein the tissue-treating surface is curved convexly. ### Claim 37 (depends on 34) The surgical instrument of claim 34, further comprising: a clamp member movable relative to the tissue-treating surface to capture tissue therebetween. ### Claim 38 (depends on 34) The surgical instrument of claim 34, wherein the contour line is curved concavely and intersects the tissue-treating surface. ### Claim 39 (depends on 34) The surgical instrument of claim 34, further comprising: a first acoustic balancing feature extending proximally from the first tissue cutting surface and defining a first peak; a second acoustic balancing feature extending proximally from the second tissue cutting surface and defining a second peak; and a third acoustic balancing feature extending proximally from the first and second peaks. ### Claim 40 (depends on 34) The surgical instrument of claim 34, wherein the first and second tissue cutting surfaces define an angle therebetween, wherein the angle is selected from a range of about 85° to about 120°.