US 10,864,012 B2Granted

Tool bit for ultrasonic osteotome and ultrasonic osteotome having the same

AssigneeBeijing Smtp Technology Co., Ltd.

InventorsSongtao Zhan, Chunyuan Li

Life of this patent

Estimating the term…

Loading patent…

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.

Claims11

Dependent claims

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.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/986,254Filed 22 May 2018 · continuation
Priority: CN 2015 2 0935886 U23 Nov 2015
Published: US 2018/0263635 A120 Sep 2018
Granted: 15 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61B 17/320068
Surgical cutting instruments: using mechanical vibrations, e.g. ultrasonic
A61B 17/144
With reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades: with cutting edges at the side of the saw blades
A61B 17/16
Surgical instruments, devices or methods: instruments for performing osteoclasis; Drills or chisels for bones; Trepans
A61B 17/32
Surgical instruments, devices or methods: surgical cutting instruments

Family

PCT/CN2016/106702Parent of this continuation · filed 22 Nov 2016
US 2018/0263635 A1Pre-grant publication · published 20 Sep 2018
US 10,864,012 B2This patent

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

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key