# US 10,864,012 B2 · Tool bit for ultrasonic osteotome and ultrasonic osteotome having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,012 B2 - Document ID: US10864012B2 - Status: Granted - Kind: B2 - Application number: 15/986,254 - Filed: 2018-05-22 - Published: 2018-09-20 - Granted: 2020-12-15 - Earliest claimed: 2015-11-23 - Assignees: Beijing Smtp Technology Co., Ltd. - Applicants: Beijing SMTP Technology Co., Ltd. - Inventors: Songtao Zhan; Chunyuan Li - Web page: https://patentgrep.com/patent/US10864012B2 ## CPC - A61B 17/320068: {using mechanical vibrations, e.g. ultrasonic (A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745)} - A61B 17/144: {with cutting edges at the side of the saw blades} - A61B 17/16: Instruments for performing osteoclasis; Drills or chisels for bones; Trepans {(arthroscopic bone cutters A61B17/320016)} - A61B 17/32: Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133}) - A61B 2017/1651: {for cooling} - A61B 2017/320075: {single edge blade, e.g. for cutting} - A61B 2017/320077: {double edge blade, e.g. reciprocating} - A61B 2217/007: with irrigation system - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A tool bit for an ultrasonic osteotome includes a bit body, an arbor fixed to the bit body, and a flat end portion fixed to the arbor. A toothed edge extends linearly along a length direction of an end portion of the tool bit, and recesses are distributed evenly on the toothed edge to form teeth spaced apart from each other. The toothed edge extends linearly along a length direction, and the cutting edges of teeth are distributed linearly, e.g., instead of having a sharp structure, thus will not scrape and hurt other tissues during cutting. Since the thickness of the cutting edge is the same as that of the back edge, when cutting bone tissues, the incision is wide, thus the end portion is not easy to be clamped by bone tissue, which effectively prevents the end portion from breaking and reduces occurrence chances of surgery accidents. ## Claims ### Claim 1 A tool bit for an ultrasonic osteotome, comprising: a bit body connected with an ultrasonic equipment; an arbor fixed to the bit body; and a flat end portion of the tool bit fixed to the arbor; wherein an end portion of the tool bit includes a toothed edge extending linearly along a length direction of the end portion of the tool bit, wherein the tool bit further comprises: a plurality of recesses which are distributed evenly on the toothed edge to form teeth spaced apart from each other, wherein cutting edges of the teeth have a linear distribution structure and overlap with an extension of the toothed edge such that the cutting edges of the teeth are not formed with sharp tooth structure, wherein the end portion of the tool bit further comprises a back edge having an arcuate edge portion adjacent to a terminal of the end portion of the tool bit in a length direction thereof, and wherein the arcuate edge portion is smoothly connected to the toothed edge, and wherein a thickness of cutting edges of the teeth is the same as a thickness of the back edge. ### Claim 2 (depends on 1) The tool bit for an ultrasonic osteotome according to claim 1, wherein there is a smooth curved connection between the end portion of the tool bit and the arbor. ### Claim 3 (depends on 2) The tool bit for an ultrasonic osteotome according to claim 2, wherein there are four recesses. ### Claim 4 (depends on 3) The tool bit for an ultrasonic osteotome according to claim 3, wherein: a liquid guiding groove is formed on a side wall of the end portion of the tool bit along the length direction of the end portion of the tool bit. ### Claim 5 (depends on 3) The tool bit for an ultrasonic osteotome according to claim 3, wherein: the end portion includes a first side wall and a second side wall; a first liquid guiding groove is formed on the first side wall along the length direction of the end portion of the tool bit; a second liquid guiding groove is formed on the second side wall along the length direction of the end portion of the tool bit; and the first liquid guiding groove and the second liquid guiding groove are disposed on the tool bit symmetrically. ### Claim 6 (depends on 3) The tool bit for an ultrasonic osteotome according to claim 3, wherein: the end portion has two side walls including a first side wall and a second side wall; a liquid guiding groove is formed as a long hole penetrating through the two side walls along the length direction of the end portion of the tool bit. ### Claim 7 (depends on 1) The tool bit for an ultrasonic osteotome according to claim 1, wherein there is a smooth curved connection between the end portion of the tool bit and the arbor. ### Claim 8 (depends on 1) The tool bit for an ultrasonic osteotome according to claim 1, wherein there are four recesses. ### Claim 9 (depends on 1) The tool bit for an ultrasonic osteotome according to claim 1, wherein: a liquid guiding groove is formed on a side wall of the end portion of the tool bit along the length direction of the end portion of the tool bit. ### Claim 10 (depends on 1) The tool bit for an ultrasonic osteotome according to claim 1, wherein: the end portion includes a first side wall and a second side wall; a first liquid guiding groove is formed on the first side wall along the length direction of the end portion of the tool bit; a second liquid guiding groove is formed on the second side wall along the length direction of the end portion of the tool bit; and the first liquid guiding groove and the second liquid guiding groove are disposed on the tool bit symmetrically. ### Claim 11 (depends on 1) The tool bit for an ultrasonic osteotome according to claim 1, wherein: the end portion has two side walls including a first side wall and a second side wall; a liquid guiding groove is formed as a long hole penetrating through the two side walls along the length direction of the end portion of the tool bit.