Skin abrading apparatus

• US 20050154333A1
• Filed: 03/10/2005
• Published: 07/14/2005
• Est. Priority Date: 09/16/2002
• Status: Abandoned Application

• Current Assignee: Spamedica International Srl
• Original Assignee: Pan Germinal Systems USA, LLC
• Inventors: Mulholland, Robert Stephen, Broadwin, Alan
• Application Number:
  US11/076,752
• Publication Number:
  US 20050154333A1
• Time in Patent Office: Days
• US Class Current: 601/2
• CPC Class Codes: 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
• CPC Class Codes: A61B 17/54 Chiropodists' instruments , e.g. pedicure chiropractic devices A61H1/008
• CPC Class Codes: A61B 2017/320089 node location

Abstract

A hand held skin abrading apparatus is provided. The apparatus comprises a handle configured for gripping by a human operator; a reciprocating motion generator, in the form of a magnetostrictive ultrasonic transducer, associated with the handle; an applicator attached to the handle and having an applicator blade for applying abrading motion to a surface and a coupler for coupling the applicator to the magnetostrictive ultrasonic transducer. The applicator is releasably securable to the handle of a skin abrading apparatus and includes a connector portion extending from the applicator blade, the connector portion having a central axis, wherein the applicator blade is offset from the central axis to enable the apparatus to be operated with the handle above the plane of the surface being abraded. The apparatus may include provision for irrigation of the surface being abraded.

Claims

1. A surgical device for use as a skin abrading non-aspirating apparatus, the apparatus comprising:

a handle configured for gripping by a human operator;

a reciprocating motion generator associated with said handle;

an applicator releasably securable to said handle and having an applicator blade for applying abrading motion;

coupler means for coupling said applicator to said reciprocating motion generator and for transferring reciprocating motion from said reciprocating motion generator to said applicator blade;

said reciprocating motion generator being a magnetostrictive ultrasonic transducer;

said handle having a cavity in an interior thereof, the cavity receiving and extending about said magnetostrictive ultrasonic transducer;

a fluid inlet near one end of said handle, fluidly communicating with said cavity for supplying fluid to said cavity from a fluid source;

a fluid outlet near an opposite end of said handle, fluidly communicating with said cavity for discharging fluid from said cavity;

said magnetostrictive ultrasonic transducer further comprising a stack of magnetostrictive laminations insertable into said cavity and said cavity includes at least one electronically conducting coil for surrounding said stack and inducing an electromagnetic field in said stack in response to electrical current flow in said coil, wherein said stack is caused to longitudinally move;

said coupler means mechanically couples said applicator to said stack and said apparatus has a fluid conduit means associated with said fluid outlet for directing said fluid onto said applicator blade;

the fluid serving as a cooling fluid, wherein said cooling fluid, cavity and flow of said cooling fluid from the fluid inlet end of the cavity, through the cavity and out the fluid outlet from said cavity removes a heat generated within the cavity of the handle by the magnetostrictive ultrasonic transducer to prevent said magnetostrictive ultrasonic transducer and handle from overheating;

said fluid conduit means including at least one irrigation passage extending from said cavity and through said coupler;

said at least one electronically conducting coil being connected to an ultrasonic generator capable of generating an electrical current having an ultrasonic frequency;

said ultrasonic generator converts a 50-60 Hz AC input current into an ultrasonic frequency output current and causes said magnetostrictive ultrasonic transducer to vibrate at ultrasonic frequencies;

the skin abrading non-aspirating apparatus further being adapted for use in cosmetic procedures, wherein;

said magnetostrictive ultrasonic transducer is adapted to operate so as to vibrate at a vibrating frequency of between 28 and 32 kHz;

said applicator blade is operable so as to have a reciprocating amplitude of vibration of between 12 and 37 microns, said applicator blade being adapted to have an application angle and dimension to minimize or eliminate any flexural mode of the applicator blade; and

said skin abrading apparatus further comprises means for eliminating high acoustic losses which would cause excess heating and pose a safety threat to a patient or cause premature fracture or failure, said means being the construction of the applicator blade with titanium material, wherein said titanium material has a grain direction aligned with a longitudinal axis of said applicator blade, and

when in use at the operable range of vibrating frequency and reciprocating amplitude of vibration, the apparatus is adapted to be capable of microbrading a stratum corneum of an epidermis without cutting, chopping or cavitating the skin of the patient.

2. The apparatus of claim 1, wherein said magnetostrictive ultrasonic transducer vibrates at a vibrating frequency of 30 kHz.

3. The apparatus of claim 1, wherein said applicator blade has a reciprocating amplitude of vibration of 25 microns.

4. The apparatus of claim 1, wherein said magnetostrictive ultrasonic transducer is releasably securable to said handle and said coupler means acts between said stack and said applicator.

5. The apparatus of claim 1, wherein said titanium is 6AL4V titanium.

6. The apparatus of claim 1, wherein said applicator includes a connector portion extending from said applicator blade, for securing said applicator to said coupler means.

7. The apparatus of claim 6, wherein said fluid conduit means includes at least one irrigation passage extending through said connector portion.

8. The apparatus of claim 1, wherein a standing wave is associated with said reciprocating motion of said applicator, said standing wave having nodes, which correspond to areas of minimum reciprocating amplitude of displacement, and anti-nodes, which correspond to areas of maximum reciprocating amplitude of displacement, wherein said applicator is of a length such that said applicator blade is located at an anti-node.

9. The apparatus of claim 1, wherein said applicator blade includes at least one abrading surface.

10. The apparatus of claim 1, wherein said applicator blade includes two abrading surfaces.

11. The apparatus of claim 9, wherein said at least one abrading surface includes at least one ridge extending transversely across said at least one abrading surface and defining a ridge abrading surface.

12. The apparatus of claim 10, wherein said two abrading surfaces each include at least one ridge extending transversely across each abrading surface and defining respective ridge abrading surfaces.

13. The apparatus of claim 11, wherein said at least one ridge extends transversely across said at least one abrading surface, adjacent to an outer edge.

14. The apparatus of claim 1, wherein said coupler means includes a shaft extending to said applicator blade, said shaft having a central axis, wherein said applicator blade is offset from said central axis to enable said apparatus to be operated with said handle above said plane of said surface being abraded.

15. The apparatus of claim 1, wherein said coupler means includes a shaft extending to said applicator.

16. The apparatus of claim 15, wherein said applicator blade is spatulate in shape.

17. The apparatus of claim 16, wherein said applicator blade includes a flared portion and a rectangular portion.

18. The apparatus of claim 17, wherein said rectangular portion is offset from said central axis to enable said apparatus to be operated with said handle above said plane of said surface being abraded.

19. The apparatus of claim 18, wherein said rectangular portion meets said flared portion at an angle of between 90 degrees and 180 degrees relative to said central axis.

20. The apparatus of claim 19, wherein said angle is 150 degrees.

21. The apparatus of claim 19, wherein said angle defines an outer vertex, adjacent to which at least one ridge extends and defines a ridge-abrading surface.

22. The apparatus of claim 19, wherein said angle defines an outer vertex, on which at least one ridge extends and defines a ridge-abrading surface.

23. The apparatus of claim 1, wherein said applicator blade includes at least one hole extending therethrough for allowing fluid passage therethrough onto an underlying surface.

24. The apparatus of claim 23, wherein said at least one hole is a slot.

25. The apparatus of claim 23, wherein said at least one hole is located on said flared portion of said applicator blade.

26. An applicator, releasably securable to a handle of a skin abrading apparatus, the applicator including:

an applicator blade for applying a reciprocating abrading motion at a vibrating frequency of between 28 and 32 kHz and a reciprocating amplitude of vibration of between 12 and 37 microns, said applicator blade being adapted to have an application angle and dimension to minimize or eliminate any flexural mode of the applicator blade;

the applicator blade being made from titanium material, wherein said titanium material has a grain direction aligned with a longitudinal axis of said applicator blade,

said applicator having a connector portion extending from said applicator blade, for securing

said applicator to a coupler;

said connector portion including a fluid conduit means for directing fluid from a fluid supply onto said applicator blade;

said fluid conduit means includes at least one irrigation passage for extending through said connector portion; and

said applicator blade including at least one hole extending therethrough for allowing fluid passage therethrough onto an underlying surface,

wherein a standing wave is associated with said reciprocating motion of said applicator blade, said standing wave having nodes, which correspond to areas of minimum reciprocating amplitude of displacement, and anti-nodes, which correspond to areas of maximum reciprocating amplitude of displacement, wherein said applicator is of a length such that said applicator blade is located at an anti-node, and

when the apparatus is in use at the operable range of vibrating frequency and reciprocating amplitude of vibration, the applicator blade is adapted to be capable of microbrading a stratum corneum of an epidermis without cutting, chopping or cavitating the skin of the patient.

27. The applicator of claim 26, wherein said titanium is 6AL4V titanium.

28. The applicator of claim 26, wherein said applicator blade includes at least one abrading surface.

29. The applicator of claim 26, wherein said applicator blade includes two abrading surfaces.

30. The applicator of claim 28, wherein said at least one abrading surface includes at least one ridge extending transversely across said at least one abrading surface and defining a ridge abrading surface.

31. The applicator of claim 29, wherein said two abrading surfaces each include at least one ridge extending transversely across each abrading surface and defining respective ridge abrading surfaces.

32. The applicator of claim 30, wherein said at least one ridge extends transversely across said at least one abrading surface, adjacent to an outer edge.

33. The applicator of claim 26, wherein said connector portion has a central axis, wherein said applicator blade is offset from said central axis to enable said apparatus to be operated with a shaft above a plane of a skin surface being abraded.

34. The applicator of claim 26, wherein said applicator blade is spatulate in shape.

35. The applicator of claim 34, wherein said applicator blade includes a flared portion and a rectangular portion.

36. The applicator of claim 35, wherein said rectangular portion is offset from said central axis to enable said apparatus to be operated with said shaft above said plane of said surface being abraded.

37. The applicator of claim 36, wherein said rectangular portion meets said flared portion at an angle of between 90 degrees and 180 degrees relative to said central axis.

38. The applicator of claim 37, wherein said angle is 150 degrees.

39. The applicator of claim 37, wherein said angle defines an outer vertex, adjacent to which at least one ridge extends and defines a ridge-abrading surface.

40. The applicator of claim 37, wherein said angle defines an outer vertex, on which at least one ridge extends and defines a ridge-abrading surface.

41. The applicator of claim 26, wherein said at least one hole is a slot.

42. The applicator of claim 26, wherein said at least one hole is located on said flared portion of said applicator blade.