MANDIBULAR PROSTHETIC APPARATUS

• US 3,720,959 A
• Filed: 08/26/1970
• Issued: 03/20/1973
• Est. Priority Date: 08/26/1970
• Status: Expired due to Term

• Current Assignee: George W. Hahn
• Original Assignee: George W. Hahn
• Inventors: Hahn, George W.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Frinks, Ronald L.
• Application Number:
  US05/067,029
• Time in Patent Office: 937 Days
• Field of Search: 3/1 128/92R,92C,89A,334R,334C 32/1 29/515,516
• US Class Current: 623/17.17
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61F 2/2803 for mandibular reconstruction temporo-mandibular joints A61F2/3099; bone plates for the jaw A61B17/8071
• CPC Class Codes: A61F 2/2846 Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects nets or sleeves applied to surface of endoprostheses A61F2/30907; bone plates A61B17/80; bone regeneration in dental surgery A61C8/0006
• CPC Class Codes: A61F 2/3099 for temporo-mandibular [TM, TMJ] joints endoprostheses for mandibular reconstruction A61F2/2803
• CPC Class Codes: A61F 2002/30154 square
• CPC Class Codes: A61F 2002/30261 parallelepipedal
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30607 Kits of prosthetic parts to be assembled in various combinations for forming different prostheses
• CPC Class Codes: A61F 2002/30909 Nets
• CPC Class Codes: A61F 2230/0021 square
• CPC Class Codes: A61F 2230/0082 parallelepipedal
• CPC Class Codes: A61F 2250/0062 Kits of prosthetic parts to be assembled in various combinations for forming different prostheses

Abstract

A kit for forming a number of different forms of prosthetic devices to replace different portions of a mandible which have been removed. The kit includes a number of prefabricated members, fabricated from a malleable stainless steel mesh, including mating inner and outer tubular sleeve portions for assembling adjoining members, with the sleeve portions being crimped together to define rigid couplings. Screws are used to attach the end member of an assembled prosthetic device to the bone stump of the remaining mandible.

Claims

1. Mandibular prosthetic apparatus comprising, in combination:

an assembly of members fabricated of a malleable mesh;

a bow member for replacing at least portions of the main body of a mandible;

said bow member comprising an elongated curved member, elongated in cross section, and formed to include an elongated cylindrical socket portion along one edge thereof defining an outer mating circular sleeve;

a first bow support member comprising a body portion and a tubular portion extending therefrom;

said tubular portion defining an inner mating circular sleeve dimensioned for sliding fit with the outer mating circular sleeve of the bow member;

said bow member outer mating sleeve fully receiving and enclosing said support member inner mating sleeve, for coupling said members.

2. The invention set forth in claim 1 including an elongated curved lip member having a U-shaped cross section;

said lip member dimensioned to partially enclose the bow member to define a lateral extension of the bow member cross section in the bow area.

3. The invention set forth in claim 1 wherein said first bow support member defines a retention member for securing the bow member to a mandible stump;

said support member body portion being formed to enclose a portion of the mandible stump for attachment thereto.

4. The invention set forth in claim 1 wherein said first bow support member comprises a ramus-condyle member for replacing the ramus and condyle of the mandible;

the body portion of said ramus-condyle member being elongated and having means for attaching an artificial condyle at the end remote from the tubular extension portion.

5. The invention set forth in claim 4 wherein said tubular extension portion extends at an angle relative to said elongated body portion.

6. The invention set forth in claim 1 wherein said first bow support member comprises a ramus-condyle assembly including a ramus member and a condyle member;

said ramus member comprising an elongated tubular body portion of elongated cross section, defining an inner mating oval sleeve, and said tubular extension portion, defining said inner mating circular sleeve;

said condyle member comprising an elongated tubular body of elongated cross section, defining an outer mating oval sleeve, and an artificial condyle attached to one end of said tubular body;

said outer mating oval sleeve being dimensioned for a sliding fit with said inner mating oval sleeve and receiving and enclosing said inner oval sleeve to provide a rigid coupling between the ramus and condyle members.

7. The invention set forth in claim 6 wherein said tubular extension portion of said ramus member extends at an angle relative to the elongated tubular body portion of said member;

and wherein said outer and inner oval sleeves are deformed in interfering relation to provide the rigid coupling between the ramus and condyle members.

8. The invention set forth in claim 1 including a second bow support member defining a retention member for securing the bow member to a mandible stump in the bow area of a mandible;

said second bow support member comprising a body formed to enclose a portion of the mandible stump for attachment thereto;

said body including a socket portion defining an outer mating circular sleeve; and

a connector member comprising an elongated curved tubular member of circular cross section, defining an inner mating circular sleeve dimensioned for a sliding fit with the outer mating circular sleeves of the bow member and the second support member;

said connector member being fully enclosed within said outer mating sleeves to couple said bow member to said second support member.

9. The invention set forth in claim 1 wherein said first bow support member defines a retention member for securing the bow member to a bone stump in the bow area of the mandible;

said bow support member comprising a body formed to enclose a portion of the mandible stump for attachment thereto;

said body including a socket portion defining an outer mating circular sleeve; and

a connector member comprising an elongated curved tubular member of circular cross section, defining an inner mating circular sleeve dimensioned for a sliding fit with said socket portion outer mating circular sleeve;

said connector member defining said bow support member tubular portion.

10. The invention set forth in claim 1 wherein said bow member is severed to provide two abutting segments;

and a curved connector member comprising an elongated curved tubular member of circular cross section dimensioned to define an inner mating circular sleeve for sliding fit with the outer mating circular sleeves of the two bow member segments, with the connector member being fully received in and enclosed by said bow member segments to couple said segments.

11. The invention set forth in claim 1 said inner and outer mating sleeves being deformed in interfering relation to provide a rigid coupling between the respective members.

12. The invention set forth in claim 10 said curved connector member and said bow member segments being deformed in interfering relation to provide a rigid coupling between the bow member segments.