US4728330A — Prosthetic bone or tooth implant and a method of …

Claim 1

Independent Claim 12 words

A physiologically acceptable prosthetic implant for repairing bones or teeth which comprises:

Claim 2

Dependent Claim 12 words

A physiologically acceptable prosthetic implant for repairing bones or teeth which comprises:

Claim 3

Dependent Claim 184 words

(a) a generally semi-cylindrical U-shaped flexible cap, said cap including a lower generally curved surface along the underside thereof and at least one flange portion, so that said cap will fit snugly over a portion of bone or tooth which has been complimentary shaped, said cap further including a generally curved upper surface; (b) a flexible pin attached to said curved surface along the underside of said cap, said pin including means for snugly retaining said implant; (c) means for angulating said cap with respect to said pin so that said prosthesis can be aligned into a position so that the cap will lie flush upon the upper surface of a bone which has been complimentary shaped; (d) said angualtion means comprising a ball and socket connection between said pin and said cap; and (e) said pin being formed of nitinol and having a diameter at least equal to a diameter of a medullary canal into which it will be inserted so that when said pin is inserted into said canal it will fit snugly therein and assist in the retention of said cap.

Claim 4

Dependent Claim 184 words

(a) a generally semi-cylindrical U-shaped flexible cap, said cap including a lower generally curved surface along the underside thereof and at least one flange portion, so that said cap will fit snugly over a portion of bone or tooth which has been complimentary shaped, said cap further including a generally curved upper surface; (b) a flexible pin attached to said curved surface along the underside of said cap, said pin including means for snugly retaining said implant; (c) means for angulating said cap with respect to said pin so that said prosthesis can be aligned into a position so that the cap will lie flush upon the upper surface of a bone which has been complimentary shaped; (d) said angualtion means comprising a ball and socket connection between said pin and said cap; and (e) said pin being formed of nitinol and having a diameter at least equal to a diameter of a medullary canal into which it will be inserted so that when said pin is inserted into said canal it will fit snugly therein and assist in the retention of said cap.

Claim 5

Dependent Claim 45 words

A prosthetic implant according to claim 1 wherein said generally curved lower surface is generally cocave and said flange is a flat ledge portion adapted to lie flush upon a corresponding flat portion said bore, said upper surface being of a generally complementary convex configuration.

Claim 6

Dependent Claim 61 words

A prosthetic implant device according to claim 1 wherein said generally curved lower surface is generally convex and said flange is a flat ledge portion adapted to lie flush upon a corresponding flat ledge section said bore, said upper surface being generally convex in a direction opposite from said lower surface and conforming to the appropriate bone anatomy or tooth anatomy.

Claim 7

Dependent Claim 194 words

A physilogiocally acceptable prosthetic implant for repairing bones or teeth which comprises: (a) a generally semi-cylindrical U-shaped fleixible cap, said cap including a lower generally curved surface along the underside thereof and at least one flange portion, so that said cap will fit snugly over a portion of bone or tooth which has been complimentary shaped, said further including a generally curved upper surface; (b) a flexible pin attached to said curved surface along the underside of said cap, said pin including means for snugly retaining said implant; (c) means for angulating said cap with respect to said pin so that said prosthesis can be aligned into a position so that the cap will lie flush upon the upper surface of a bone which has been complimentary shaped; (d) said angulation means comprising an integral flexible connection between said pin and said cap; and (e) said pin being formed of nitinol and having a diameter at least equal to a diameter of a medullary canal into which it will be inserted so that when said pin is inserted into said canal it will fit snugly therein and assist in the retention of said cap.

Claim 8

Dependent Claim 194 words

A physilogiocally acceptable prosthetic implant for repairing bones or teeth which comprises: (a) a generally semi-cylindrical U-shaped fleixible cap, said cap including a lower generally curved surface along the underside thereof and at least one flange portion, so that said cap will fit snugly over a portion of bone or tooth which has been complimentary shaped, said further including a generally curved upper surface; (b) a flexible pin attached to said curved surface along the underside of said cap, said pin including means for snugly retaining said implant; (c) means for angulating said cap with respect to said pin so that said prosthesis can be aligned into a position so that the cap will lie flush upon the upper surface of a bone which has been complimentary shaped; (d) said angulation means comprising an integral flexible connection between said pin and said cap; and (e) said pin being formed of nitinol and having a diameter at least equal to a diameter of a medullary canal into which it will be inserted so that when said pin is inserted into said canal it will fit snugly therein and assist in the retention of said cap.

Claim 9

Dependent Claim 48 words

A prosthetic implant device according to claim 4 wherein said pin is formed as a coil, wherein said coil is deformed upon implantation into said mediullary canal and tends to return to its original non-deformed state within said medullary canal to assist in the retention of said cap.

Claim 10

Dependent Claim 17 words

A prosthetic implant device according to claim 4 wherein said pin is covered by a compressible material.

Claim 11

Dependent Claim 15 words

A prosthetic implant according to claim 6 wherein said compressible material is surgical grade rubber.

Claim 12

Dependent Claim 19 words

A prosthetic implant according to claim 4 in which said pin is in the form of a U-shaped loop.

Claim 13

Dependent Claim 78 words

A prosthetic implant according to claim 1 wherein said cap has a thin portion and a thick portion, said thick portion being situated at the flange portion of said cap, said thin portion being situated at an edge opposite said flange portion, said upper surface and lower surface of said cap taper from said thick portion to said thin portion along said upper surface and lower surface so as to provide a continuity of thickness to said cap.

Claim 14

Dependent Claim 104 words

A prosthetic implant according to claim 1 further comprising a circular bottom plate having upper and lower surfaces and a central hole into which said pin of said cap is retained, a large and narrow slot into which a clip is inserted, each said clip having a thin neck portion extending through said slot, and said clip having a wide head portion abutting the upper surface of said circular bottom plate so as to prevent said clips from moving out of said slot, whereby said plate is inserted within a canal so as to retain said pin and said cap to the bone surface.

Claim 15

Dependent Claim 82 words

A prosthetic implant according to claim 1, wherein said cap is a double-flanged curved cap, each flange section being downwardly and inwardly directed along the inner generally curved surface of the cap, wherein the distance between each inner surface of each said flange is less than the width of an area of an osteotomy so that each flange must be spread apart in order to fit over the area to provide a snap fit between the cap and area of said osteotomy.

Claim 16

Dependent Claim 30 words

A prosthetic implant according to claim 11 wherein said angulation means is a socket formed in said lower curve surface and said ball is formed at end of said pin.

Claim 17

Dependent Claim 231 words

A physiologically acceptable prosthetic implant for repairing bones or teeth which comprises: (a) a generally U-shaped flexible cap, said cap including a lower generally curved surface along the underside thereof and at least one flange portion, so that said cap will fit snugly over a portion of bone or tooth which has been compleimentary shaped, said cap further including a generally curved upper surface; (b) A flexible pin attached to said curved surface along the underside of said cap; (c) means for angulating said cap with respect to said pin so that said prosthesis can be aligned into a position so that the cap will lie flush upon the upper surface of a bone which has been complimentary shaped, (d) a plunger means having an enlarged flattened beaded surface attached to the bottom of said pin, (e) a generally U-shaped plug which can be inserted within a medullary canal, (f) a ratchet clip, situated within said plug, said plunger means being pushed into said plug and retained within said plug by said ratchet clip, said plunger means within said ratchet clip expanding said ratchet clip to push the outside walls of said plug into abutment with the walls of said canal so that said plug, said ratchet clip and said thereby said pin and said cap are snugly retained to the surface of a bone which has been cut complimentary shaped.

Claim 18

Dependent Claim 231 words

A physiologically acceptable prosthetic implant for repairing bones or teeth which comprises: (a) a generally U-shaped flexible cap, said cap including a lower generally curved surface along the underside thereof and at least one flange portion, so that said cap will fit snugly over a portion of bone or tooth which has been compleimentary shaped, said cap further including a generally curved upper surface; (b) A flexible pin attached to said curved surface along the underside of said cap; (c) means for angulating said cap with respect to said pin so that said prosthesis can be aligned into a position so that the cap will lie flush upon the upper surface of a bone which has been complimentary shaped, (d) a plunger means having an enlarged flattened beaded surface attached to the bottom of said pin, (e) a generally U-shaped plug which can be inserted within a medullary canal, (f) a ratchet clip, situated within said plug, said plunger means being pushed into said plug and retained within said plug by said ratchet clip, said plunger means within said ratchet clip expanding said ratchet clip to push the outside walls of said plug into abutment with the walls of said canal so that said plug, said ratchet clip and said thereby said pin and said cap are snugly retained to the surface of a bone which has been cut complimentary shaped.

Claim 19

Dependent Claim 31 words

A prosthetic implant according to claim 13 wherein said ratchet clip is angulated or bent inwardly so as to increase the expansion when siad plunger means is inserted within said plug.

Claim 20

Dependent Claim 34 words

A prosthetic implant according to claim 13 wherein said ratchet clip has an apical region and said clip defining a break in said apical region to allow said clip to expand against said plug.

Claim 21

Dependent Claim 26 words

A prosthetic implant according to claim 13, wherein said ratchet clip has a large rounded section below the deepest ratchet groove to hold said plunger stem.

Claim 22

Dependent Claim 18 words

A prosthetic implant according to claim 13 wherein said plug is made of a surgical grade rubber material.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-03-01	1991-08-31	1992-03-01	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-03-01	1995-08-31	1996-03-01	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-03-01	1999-08-31	2000-03-01	$7700.00	Window Closed / Lapsed

Prosthetic bone or tooth implant and a method of surgically implanting the same

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