Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Miscellaneous
Patent
1985-10-02
1987-08-04
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Miscellaneous
623 16, 433229, A61F 200
Patent
active
046843701
ABSTRACT:
Stents are disclosed for use in surgical augmentation of tissue at body sites such as the alveolar ridge, by the use of an implant material, i.e., hydroxylapatite (HA) for example. The stents are used for surgical positioning and shaping of the implant material and for post operative maintenance thereof. The stents are constructed of a transparent substance, molded to a model of specific desired tissue morphology and adjacent tissues. In use, a stent is positioned to define a confining open sided cavity corresponding to the specific predetermined tissue morphology. Implant material is injected or placed beneath the soft tissue over which the stent is positioned, to expand the tissue to occupy entirely the inside of the stent cavity, this step facilitated by observation through the transparent stent walls. A series of modified versions of the stents are typically employed for alveolar ridge augmentation, including stents having different relief openings for surgical access to anterior and posterior ridge sections. An unrelieved stent is used for checking final ridge morphology, and may be ligated in place to insure proper post operative bonding and securement of the implant.
REFERENCES:
patent: 3577640 (1971-05-01), Lee
patent: 3787900 (1974-01-01), McGee
patent: 3913229 (1975-10-01), Driskell et al.
patent: 4097935 (1978-07-01), Jarcho
patent: 4277238 (1981-07-01), Katagiri
patent: 4468202 (1984-08-01), Cohen
Apley Richard J.
Benefiel John R.
Cannon Alan W.
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