US 12,070,235 B2
Device and method for perforating a dense bone layer
Andrè Schwery, Rombach (CH); and Jörg Mayer, Niederlenz (CH)
Assigned to BOSONIC AG, Bern (CH)
Appl. No. 17/257,053
Filed by BOSONIC AG, Bern (CH)
PCT Filed Jul. 2, 2019, PCT No. PCT/EP2019/067749
§ 371(c)(1), (2) Date Dec. 30, 2020,
PCT Pub. No. WO2020/007865, PCT Pub. Date Jan. 9, 2020.
Claims priority of application No. 00834/18 (CH), filed on Jul. 3, 2018.
Prior Publication US 2021/0177438 A1, Jun. 17, 2021
Int. Cl. A61B 17/16 (2006.01); A61B 17/32 (2006.01); A61B 17/3205 (2006.01); A61B 17/34 (2006.01); A61B 90/00 (2016.01); A61D 1/00 (2006.01)
CPC A61B 17/1637 (2013.01) [A61B 17/1604 (2013.01); A61B 17/32002 (2013.01); A61B 17/32053 (2013.01); A61B 17/3421 (2013.01); A61B 17/1671 (2013.01); A61B 2017/320064 (2013.01); A61B 2017/32007 (2017.08); A61B 2017/320072 (2013.01); A61B 2017/320098 (2017.08); A61B 2017/3454 (2013.01); A61B 2090/036 (2016.02); A61D 1/00 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A device for perforating a dense bone layer, the device comprising a vibration generator for generating mechanical vibration and an instrument with a shaft and a distal end piece comprising a perforator, wherein the shaft has a distal end, a proximal end and a principal longitudinal shaft axis extending between the proximal end and the distal end, wherein the distal end piece is arranged at the distal end of the shaft and the proximal end of the shaft is connected or connectable to the vibration generator, wherein the perforator comprises a solid or a hollow cylinder or prism defining a principal perforator axis, and wherein the vibration generator, the shaft and the distal end piece are adapted to each other for the shaft to transmit mechanical vibration from the vibration generator to the distal end piece and for vibrating the perforator in a direction parallel to the principal perforator axis, wherein the principal perforator axis is angled relative to the principal longitudinal shaft axis,
wherein the shaft comprises an element, wherein said element provides a ring-shaped increase of wall thickness or comprising two solid objects attached symmetrically to the shaft, said element having a mass, the mass of the element influencing an axial amplitude of the mechanical vibration.