U.S. patents available from 1976 to present.
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Absorbable joint implants for the lesser digits and metatarsal phalangeal joints in the surgical correction of the foot

Patent 5207712 Issued on May 4, 1993. Estimated Expiration Date: Icon_subject May 7, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Joint prosthesis
Patent #: 4634445
Issued on: 01/06/1987
Inventor: Helal

Bone pin
Patent #: 4858603
Issued on: 08/22/1989
Inventor: Clemow ,   et al.

Osteosynthetic pin
Patent #: 4898186
Issued on: 02/06/1990
Inventor: Ikada, et al.

Articular prosthetic implant with temporary fixing means
Patent #: 4969909
Issued on: 11/13/1990
Inventor: Barouk

Finger joint prosthesis Patent #: 5092896
Issued on: 03/03/1992
Inventor: Meuli, et al.

Inventor

Application

No. 879886 filed on 05/07/1992

US Classes:

623/21.19, Toe bone606/59, Pin connector606/60, Internal fixation means606/72, Orthopedic fastener606/76Specialized coating or material

Examiners

Primary: Green, Randall L.
Assistant: Jones, Mary Beth

Attorney, Agent or Firm

International Class

A61F 002/42

Abstract

A method and apparatus for surgical correction of malformations of digits of a foot. Part of the joint is removed to expose bone ends. The bone ends are spaced apart from each other at a distance greater than would be suitable for knitting of said bone ends to each other with bone tissue. Holes are bored in each of the bone ends. An implant, including shafts and a central spacer, is inserted into each of the holes in the bones. This implant consists entirely of absorbable material. The implant is left permanently in place to be completely absorbed as it is replaced by fibrous scar tissue. This tissue forms an effective joint replacement.

Other References

  • Shaw H. Alan, Alvarez Gregory, The Use of Digital Implants for the Correction of Hammertoe Deformity and Their Potential Complications and Management, 31 The Journal of Foot Surgery, No. 1 pp. 63-74 (Jan./Feb. 1992)
  • A Totally Absorbing Disappearing Act !, OrthoSorb absorbable pin advertisement, The Journal of Foot Surgery, ibid. at ii
  • Orthosorb Absorbable pin: Setting the Standard for Absorbable Internal Fixation for Shear or Torque Forces in the Foot, Hand, or Knee, Handout literature distributed by Johnson & Johnson Orthopaedics (1991) 325 Paramount Dr., Raynham, Mass. 02767
  • Gotkin, Introducing the Absorbable Tapered Pins, 1 Absorbable Update #2, pp. 1-3 (Jul./Aug. 1991 Boca Biomedical Inc.)
  • Shear Strength . . . With a Fracture fixation pin that's gradually absorbed, Johnson & Johnson Orthopaedics brochure (1990)
  • BioAction Great Toe Implant, Orthopaedic Biosystems advertisemen
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