The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 1989
Filed:
Nov. 23, 1987
Tomas Albrektsson, Molndal, SE;
Per Aspenberg, Lund, SE;
Nobelpharma AB, Gothenburg, SE;
Abstract
An apparatus for studying the bone formation or bone ingrowth in an implant, in response to locally administered test substances of different types, is made of bio-compatible material, preferably pure titanium, and is implanted in living bone tissue, primarily for animal experiment activities. The apparatus has an outer portion with a central recess in which an inner portion is removably inserted. The two portions form, in the assembled state, a bone tissue ingrowth channel which is exposed when the inner portion is removed, whereby allowing examination of tissue which has grown into the channel. The inner portion includes a reservoir for the test substance whose bone formation promoting properties are to be tested. The reservoir is connected to the bone tissue ingrowth channel through a capillary aperture, so-called diffusion capillary, for supply of the test substance without simultaneous liquid flow.