Prosthesis installation systems and methods

Patent metadata

Field	Value
Publication number	US-2017071759-A1
Application number	US-201615235078-A
Country	US
Kind code	A1
Filing date	Aug 11, 2016
Priority date	Dec 29, 2013
Publication date	Mar 16, 2017
Grant date	—

Abstract

A system and method for allowing any surgeon, including those surgeons who perform a fewer number of a replacement procedure as compared to a more experienced surgeon who performs a greater number of procedures, to provide an improved likelihood of a favorable outcome approaching, if not exceeding, a likelihood of a favorable outcome as performed by a very experienced surgeon with the replacement procedure.

First claim

1 - 19 . (canceled)

20 . A vibratory device for installation of a prosthesis into a cavity prepared in a portion of a bone, comprising:
an engine producing a motion; a shaft coupled to the prosthesis; a converter, coupled to said engine and to said shaft, producing a series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion.

21 . The vibratory device of claim 20 wherein said engine includes a rotary motor and wherein said motion includes a rotary motion.

22 . The vibratory device of claim 20 wherein said engine includes a pneumatic motor and wherein said motion includes a flow of a fluid.

23 . The vibratory device of claim 20 wherein said converter includes a cam having a cam surface responsive to said rotary motion and wherein said shaft is coupled to said cam surface.

24 . The vibratory device of claim 21 wherein said converter includes a cam having a cam surface responsive to said rotary motion and wherein said shaft is coupled to said cam surface.

25 . The vibratory device of claim 22 wherein said converter includes a cam having a cam surface responsive to said flow and wherein said shaft is coupled to said cam surface.

26 . The vibratory device of claim 23 wherein said converter includes a rocker arm coupled between said cam surface and said shaft with a first end of said rocker arm coupled to said cam surface and a second end of said rocker arm coupled to said shaft and wherein a biasing structure is coupled to said second end.

27 . The vibratory device of claim 24 wherein said converter includes a rocker arm coupled between said cam surface and said shaft with a first end of said rocker arm coupled to said cam surface and a second end of said rocker arm coupled to said shaft and wherein a biasing structure is coupled to said second end.

28 . The vibratory device of claim 25 wherein said converter includes a rocker arm coupled between said cam surface and said shaft with a first end of said rocker arm coupled to said cam surface and a second end of said rocker arm coupled to said shaft and wherein a biasing structure is coupled to said second end.

29 . The vibratory device of claim 24 wherein said rotary motor includes a direct current (DC) motor, wherein said cam surface defines a two lobed surface directly connected to said DC motor by a gear train.

30 . The vibratory device of claim 29 wherein said gear train is configured to produce said series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion at about 50 Hz.

31 . The vibratory device of claim 29 wherein said shaft includes a distal end coupled to the prosthesis and a proximal end proximate said cam surface and wherein said proximal end is coupled to an inline spring to bias said proximal end away from said cam surface, and wherein a compression of said inline spring is configured to contact said proximal end to said cam surface.

32 . The vibratory device of claim 30 wherein said shaft includes a distal end coupled to the prosthesis and a proximal end proximate said cam surface and wherein said proximal end is coupled to an inline spring to bias said proximal end away from said cam surface, and wherein a compression of said inline spring is configured to contact said proximal end to said cam surface.

33 . The vibratory device of claim 21 wherein said converter includes a cam having a cam surface responsive to said rotary motion with said cam surface coupled to a shaft spring by a rocker assembly, further comprising a gear train coupled to said cam, and wherein said shaft spring is coupled to said shaft.

34 . The vibratory device of claim 33 wherein said cam surface, said rocker assembly, and said shaft spring are configured to produce said series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion between 50-500 Hz.

35 . The vibratory device of claim 33 wherein said cam surface, said rocker assembly, and said shaft spring are configured to produce said series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion with a force of up to 500 lbf.

36 . The vibratory device of claim 35 wherein said cam surface, said rocker assembly, and said shaft spring are configured to produce said series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion between 50-500 Hz.

37 . The vibratory device of claim 20 wherein said engine includes a laterally extending rotary engine driving a crankshaft including a radially offset pin, wherein said converter includes a connecting rod coupled to said radially offset pin and further includes a piston coupled to said connecting rod and coupled to an impact piston by a sliding spring.

38 . A method for installation of a prosthesis into a cavity prepared in a portion of a bone, comprising:
a) coupling a shaft to the prosthesis; b) producing a motion by an engine; c) converting said motion into a series of longitudinal vibrations in said shaft and the prosthesis.

39 . The method of claim 38 wherein said producing step b) includes one or more engines selected from the group consisting of a rotary engine, a pneumatic engine, and combinations thereof.

40 . The method of claim 38 wherein said converting step 38 includes an operation of one or more motion converters selected from the group consisting of a direct connection of said shaft to a cam surface of a cam, an indirect connection of said shaft to said cam surface, a pneumatic coupling of said shaft to a flow of fluid, and combinations thereof.

41 . The method of claim 39 wherein said converting step 38 includes an operation of one or more motion converters selected from the group consisting of a direct connection of said shaft to a cam surface of a cam, an indirect connection of said shaft to said cam surface, a pneumatic coupling of said shaft to a flow of fluid, and combinations thereof.

Assignees

• Behzadi Kambiz

Inventors

• Behzadi Kambiz
• Leite Alexandre Carvalho
• Depiano John
• Ebbs Matthew
• Jacobs David
• Kardel Paul
• Winkler Danny Kent

Classifications

• A61F2002/4619

  for extraction · CPC title

• B25D11/068

  in which the tool bit or anvil is hit by a rotary impulse member · CPC title

• A61F2002/30523

  by means of meshing gear teeth · CPC title

• A61F2002/4694

  pneumatic · CPC title

• A61F2002/4632

  using computer-controlled surgery, e.g. robotic surgery · CPC title