Callous-removing skin-file

• US 4,537,207 A
• Filed: 03/28/1983
• Issued: 08/27/1985
• Est. Priority Date: 04/02/1982
• Status: Expired due to Term

• Current Assignee: "Credo" Stahlwarenfabrik Gustav Kracht GmbH & Company KG
• Original Assignee: Firma Credo Stahlwarenfabrik Gustav Kracht
• Inventors: Gilhaus, Heinz
• Primary Examiner(s): McNeill, Gregory E.
• Application Number:
  US06/479,801
• Time in Patent Office: 883 Days
• Field of Search: 132/76.4, 132/76.2, 132/75.6, 132/76.5, 51/380, 51/29, 51/78, 51/80, 51/76 R, 128/303.14, 128/304, 128/355
• US Class Current: 132/76.4
• CPC Class Codes: A61B 17/322 Skin grafting apparatus
• CPC Class Codes: A61B 17/54 Chiropodists' instruments , e.g. pedicure chiropractic devices A61H1/008

Abstract

A skin-file or rasp of the kind comprising a gripping handle (1) which is provided at one end with a rasp head (2), the latter removably holding a rasping foil (11) which has longitudinally extending edges (10) having inturned portions which embrace the longitudinally extending edges of the rasp head. The edges of the rasp head are thickened and are provided with grooves (6) in which the longitudinal edges (10) of the rasping foil are located, the rasp head being provided at each end with an end stop (8 and 9) to prevent longitudinal movement of the rasping foil relative to the rasp head. The rasping foil is also provided on each of its longitudinal edges with narrow, outwardly projecting portions (12) which assist in engaging or disengaging the rasping foil from the rasp head.

Claims

1. A callous-removing skin file, or rasp, comprising:

a longitudinally extending gripping handle having an inner and an outer end;

a rasp head extending from the inner end of said handle having an upper side, a lower side, and longitudinal edges extending parallel to the longitudinal axis of said handle, said longitudinal edges being thicker than the part of the rasp head between said edges;

grooveways in and extending substantially parallel to and along the outer sides of said longitudinal edges;

flanges along said edges forming limiting inner shoulder portions of said grooveways;

projecting shoulder portions at both ends of said rasp head forming end stops;

a filing or rasping foil member removably attached to said rasp head having a cutting surface and longitudinal edges with inturned portions releasably engaged in said grooveways in abutting relationship along the edges thereof with said flanges and at the ends thereof with said end stops so that said foil member is retained on and in fixed embracing relationship with said rasp head during use; and

outwardly angled flanges along the edges of said foil member of the rasp.

2. A skin-file according to claim 1 wherein said inturned portions of said longitudinal edges of the foil member are rounded.

3. A skin-file according to claim 1 and further comprising:

a recess in one of said flanges on the edges of said rasp head along a grooveway for the insertion therein of a fingertip in order to press outwardly one of the outwardly angled flanges on the edges of the rasping foil.

4. A skin-file according to claim 1 wherein said rasp head comprises a substantially planar member of plastics material which is reinforced along its marginal sides by said thickened longitudinally extending edges and said flanges thereon and further comprising a central longitudinal rib on said lower side of said rasp head which supports the rasping foil and additionally reinforces said rasp head.

5. A skin-file according to claim 4, wherein said flanges, longitudinal edges and, central longitudinal rib of the rasp head are all greater in cross-sectional thickness than the remainder of the rasp head.

6. A skin-file according to claim 1 wherein the rasp head and the gripping handle are formed in one piece from a plastics material.

7. A skin file as claimed in claim 1 wherein said grooveways extend along the outer upper side of said longitudinal edges of said rasp head.

8. A skin file as claimed in claim 1 wherein said outer lower portions of said longitudinal edges of said rasp head are rounded.

9. A skin file as claimed in claim 7 wherein said outer lower portions of said longitudinal edges of said rasp head are rounded.

10. A skin file as claimed in claim 9 wherein the longitudinal edges of said foil member are rounded and substantially conform to said rounded portions of said longitudinal edges of said rasp head.

11. A skin file as claimed in claim 10 wherein said flanges project from said upper side of said rasp head.

12. A skin file as claimed in claim 1 wherein said flanges project from said upper side of said rasp head.

13. A skin file according to claim 11 wherein said rasp head comprises a substantially planar member of plastics material which is reinforced along its marginal sides by said thickened longitudinally extending edges and said flanges thereon and further comprising a central longitudinal rib on said lower side of said rasp head which supports the rasping foil and additionally reinforces said rasp head.

14. A skin file according to claim 11, wherein said flanges, longitudinal edges and central longitudinal rib of the rasp head are all greater in cross-sectional thickness than the remainder of the rasp head.

15. A skin file according to claim 11, wherein the rasp head and the gripping handle are formed in one piece from a plastics material.

16. A skin file as claimed in claim 10, wherein said foil member is resilient at least in the direction transverse to its longitudinal axis so that it engages onto said rasp head by a snap-fit engagement.

17. A skin file as claimed in claim 15, wherein said foil member is resilient at least in the direction transverse to its longitudinal axis so that it engages onto said rasp head by a snap-fit engagement.