Arrangement for increasing the stress resistance of implants and one such implant

Patent metadata

Field	Value
Publication number	US-9855116-B2
Application number	US-201414288078-A
Country	US
Kind code	B2
Filing date	May 27, 2014
Priority date	Jul 25, 2002
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

An arrangement and an implant are provided for increasing the stress resistance of the implant arranged in an upper jaw bone. The implant has access via parts to the sinus cavity. At these parts, the implant is arranged with a convex or rounded front surface which, upon access, lifts the sinus mucous membrane, without piercing the latter, and thus forms a closed space between the parts and the underside of the mucous membrane. The implant is provided, at least at these parts, with growth-stimulating substance or substances which interact with cell-containing body fluid which penetrates or has penetrated into the space, so that new bone is formed around these parts of the implant.

First claim

The invention claimed is:

1. An implant for insertion into an upper jaw bone of a patient in need thereof, the implant comprising:
a tip having a convex or rounded frontmost surface being designed to cooperate with a sinus mucous membrane in a sinus, via an underside of the sinus mucous membrane, to form an enclosed space between the implant and the underside of the sinus mucous membrane, the implant being coated with at least one growth-stimulating substance (GSS),
wherein at least the frontmost surface and parts of the implant penetrating into the sinus are arranged to interact with cell-containing body fluid to form new bone around the frontmost surface and the parts of the implant penetrating into the sinus,
wherein the implant comprises at least one outer thread,
wherein the GSS is coated only on a side of the tip of the implant,
wherein the convex or rounded frontmost surface of the tip of the implant is a polished surface, and
wherein the tip is designed with contiguous sides having a porous layer, which porous layer functions as a reservoir for layers of GSS.

2. The implant of claim 1 , wherein the porous layer is a porous oxide layer.

3. A kit comprising the implant of claim 1 and a membrane separation instrument for forming an initial stage of the enclosed space between the underside of the sinus mucous membrane and the implant,
wherein the membrane separation instrument is insertable through a jaw bone hole adjacent to the sinus mucous membrane, and
wherein the membrane separation instrument is rotatable in the jaw bone hole so as to separate the sinus mucous membrane from the surface of the upper jaw bone thereby forming the initial stage of the enclosed space.

4. The implant according to claim 1 , further comprising:
an anchor for securing the implant to the upper jaw bone, and
at least one screw for fastening the anchor to the upper jaw bone.

5. The implant according to claim 1 , further comprising:
a second screw which is screwed into an inner threaded hole of the implant to secure the anchor to the implant.

6. An implant for insertion into an upper jaw bone of a patient in need thereof, the implant comprising:
a tip having a convex or rounded frontmost surface being designed to cooperate with a sinus mucous membrane in a sinus, via an underside of the sinus mucous membrane, to form an enclosed space between the implant and the underside of the sinus mucous membrane,
wherein at least the frontmost surface and parts of the implant penetrating into the sinus are coated with at least one growth-stimulating substance (GSS) arranged to interact with cell-containing body fluid to form new bone around the frontmost surface and the parts of the implant penetrating into the sinus, and
wherein the convex or rounded frontmost surface of the tip is a polished surface and is designed with contiguous sides having a porous layer, which porous layer functions as a reservoir for layers of GSS.

7. The implant of claim 6 , wherein the implant is made of titanium or ceramic.

8. The implant of claim 6 , further comprising an anchor configured to secure the implant to the upper jaw bone.

9. The implant of claim 6 , wherein the GSS is a member selected from the group consisting of matrix molecules, growth factors, differentiation factors, and growth-stimulation peptides or a mixture thereof.

10. The implant of claim 6 , wherein the porous layer is a porous oxide layer.

11. A kit comprising the implant of claim 6 and a membrane separation instrument for forming an initial stage of the enclosed space between the underside of the sinus mucous membrane and the implant,
wherein the membrane separation instrument is insertable through a jaw bone hole adjacent to the sinus mucous membrane, and
wherein the membrane separation instrument is rotatable in the jaw bone hole so as to separate the sinus mucous membrane from the surface of the upper jaw bone thereby forming the initial stage of the enclosed space.

12. The implant of claim 6 , further comprising:
an anchor for securing the implant to the upper jaw bone, and
at least one screw for fastening the anchor to the upper jaw bone.

13. The implant of claim 12 , further comprising:
a second screw which is screwed into an inner threaded hole of the implant to secure the anchor to the implant.

14. An implant for insertion into an upper jaw bone of a patient in need thereof, the implant comprising:
a tip having a convex or rounded frontmost surface which is designed to cooperate with a sinus mucous membrane in a sinus, via an underside of the sinus mucous membrane, to form an enclosed space between the implant and the underside of the mucous membrane;
an anchor for securing the implant to the upper jaw bone; and,
at least one screw for fastening the anchor to the upper jaw bone,
wherein at least the frontmost surface and the parts of the implant penetrating into the sinus are coated with at least one growth-stimulating substance (GSS) arranged to interact with a cell-containing body fluid to form new bone around the frontmost surface and parts of the implant penetrating into the sinus,
wherein the convex or rounded frontmost surface of the tip of the implant is a polished surface, and
wherein the tip is designed with contiguous sides having a porous layer, which porous layer functions as a reservoir for layers of GSS.

15. The implant of claim 14 , further comprising:
a second screw which is screwed into an inner threaded hole of the implant to secure the anchor to the implant.

16. The implant of claim 14 , wherein the implant further comprises one or more outer threads.

17. A kit comprising the implant of claim 14 and a membrane separation instrument for forming an initial stage of the enclosed space between the underside of the sinus mucous membrane and the implant,
wherein the membrane separation instrument is insertable through a jaw bone hole adjacent to the sinus mucous membrane, and
wherein the membrane separation instrument is rotatable in the jaw bone hole so as to separate the sinus mucous membrane from the surface of the upper jaw bone thereby forming the initial stage of the enclosed space.

18. The implant of claim 14 , wherein the implant is made of titanium or ceramic.

19. The implant of claim 14 , wherein the GSS is a member selected from the group consisting of matrix molecules, growth factors, differentiation factors, and growth-stimulation peptides or a mixture thereof.

Assignees

• Nobel Biocare Services Ag

Inventors

• Hall Jan

Classifications

• A61C8/0092

  for sinus lifting · CPC title

• A61L27/227

  Other specific proteins or polypeptides not covered by A61L27/222, A61L27/225 or A61L27/24 · CPC title

• A61C8/0013

  with a surface layer, coating · CPC title

• A61C8/0012 Primary

  characterised by the material or composition, e.g. ceramics, surface layer, metal alloy (use of specific materials A61K6/00) · CPC title

• A61C8/0015 Primary

  being a conversion layer, e.g. oxide layer · CPC title