Process for making custom joint replacements

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

364468, 36441315, 36447424, G05B 1918

Patent

active

054484898

ABSTRACT:
A process for forming a prosthesis related to bone structure internal to a body using CT scan data corresponding to the radiological density of the bone structure to derive the inner and outer bone surface contours. The density and the density gradient of discrete points in the bone structure compared to threshold density levels and to threshold density gradient levels and points are selected to form a series of interim outer contours. A contour shape factor is derived for each interim outer contour, and that interim contour is chosen in which the contour shape factor is maximum denoting less fluctuations in the contour circumference. The bone surface contour data is used to develop a graphic model from which a set of digital data is generated for a surface model representing the graphic model. A set of numerical control machine instructions are generated to make the prosthesis.

REFERENCES:
patent: 3778614 (1973-12-01), Hounsfield
patent: 3881110 (1975-04-01), Hounsfield
patent: 3945053 (1976-03-01), Hillberry et al.
patent: 4135247 (1979-01-01), Gordon et al.
patent: 4436684 (1984-03-01), White
patent: 4538227 (1985-08-01), Toraichi et al.
patent: 4704686 (1987-11-01), Aldinger
patent: 4822365 (1989-04-01), Walker et al.
patent: 4853970 (1989-08-01), Ott et al.
patent: 4872187 (1989-10-01), Nakahata et al.
patent: 4873707 (1989-10-01), Robertson
patent: 4936862 (1990-06-01), Walker et al.
patent: 5274565 (1993-12-01), Reuben
Biomedizinische Technik, vol. 30, No. 5, 1 May 1985, Berlin de pp. 111-114; Giebel, et al. "Fertigung von Knochenmodellen nach Computer-Tomographie Daten zur Verwendung in Chirurgie und Orthopadie".
Electro Medica (Siemens), vol. 56, No. 1, 1988, Erlangen de pp. 24-29; Robertson, et al. "Anspruchsvolle CT-Bildgebungsverfahren: Answendungen in der Orthopadischen Chirurgie der Hufte".
Artzy et al., Computer Graphics and Image Processing, 15, pp. 1-24 (1981).
Chou et al., Journal of Nuclear Medicine, Proceedings of the 35th Annual Meeting, p. 868, Abstract No. 526. date unknown.
Goldberg et al., Diseases of the Nervous System II, p. 499, Abstract No. 138.11. date unknown.
Granholm et al., IEEE CG & A, pp. 26-35 (Feb. 1987).
Rhodes et al., Proceedings of the 6th Annual Conference and Exposition of the National Computer Graphics Association, pp. 110-124 (1985).
Robertson et al., Medical Physics, 13:4, pp. 474-479 (Jul./Aug. 1986).
Robertson, Journal of Computer Assisted Tomography, 11:5, pp. 804-809 (Sep./Oct. 1987).
Rothman et al., Radiology, 157, p. 177, Abstract No. 448 (1985).
Seitz et al., IEEE Transactions on Medical Imaging, MI-2:3, pp. 136-141 (Sep. 1983).
Ter-Pogossian, Seminars in Roentgenology, 12:1, pp. 13-25 (Jan. 1977).
Williams et al., Investigative Radiology, 24:10; pp. 768-775 (Oct. 1989).
Woolson, Clinical Orthopaedics and Related Research, No. 202, pp. 239-248 (Jan. 1986).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for making custom joint replacements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making custom joint replacements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making custom joint replacements will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-478022

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.