Implants, tools, and methods for sinus lift and bone augmentation

• US 20100255446A1
• Filed: 03/24/2010
• Published: 10/07/2010
• Est. Priority Date: 09/29/2008
• Status: Active Grant

• Current Assignee: Maxillent Ltd.
• Original Assignee: Maxillent Ltd.
• Inventors: Gross, Yossi, Fostick, Gideon, Better, Hadar, Uchitel, Ilan
• Granted Patent: US 8,388,343 B2
• Time in Patent Office: Days
• US Class Current: 433/174
• CPC Class Codes: A61B 17/864 hollow, e.g. with socket or cannulated
• CPC Class Codes: A61B 17/8685 comprising multiple separate parts
• CPC Class Codes: A61C 1/0061 Air and water supply systems; Valves specially adapted therefor A61C1/052 takes precedence; rinsing or air-blowing devices A61C17/02
• CPC Class Codes: A61C 19/06 Implements for therapeutic treatment radiation therapy A61N5/00
• CPC Class Codes: A61C 8/0006 Periodontal tissue or bone regeneration support means for endoprosthetic bone substitute or bone graft implants A61F2/2846
• CPC Class Codes: A61C 8/0012 characterised by the material or composition, e.g. ceramics, surface layer, metal alloy use of specific materials A61K6/00
• CPC Class Codes: A61C 8/0018 characterised by the shape
• CPC Class Codes: A61C 8/0022 Self-screwing A61C8/0028 takes precedence
• CPC Class Codes: A61C 8/0028 Pins, needles; Head structures therefor A61C8/0004, A61C8/0009 take precedence
• CPC Class Codes: A61C 8/0039 in the form of hollow cylinder with an open bottom
• CPC Class Codes: A61C 8/006 with polygonal positional means, e.g. hexagonal or octagonal
• CPC Class Codes: A61C 8/0068 with an additional screw
• CPC Class Codes: A61C 8/0074 with external threads
• CPC Class Codes: A61C 8/0092 for sinus lifting
• CPC Class Codes: A61D 5/00 Instruments for treating animals' teeth

Abstract

A minimally-invasive sinus lift implant and implantation methods are disclosed. An implant apparatus may included an anchor having a distal implant end and an opposite proximal end. The implant apparatus may further include a channel extending though a portion of the anchor and having an outlet opening in the distal implant end. The channel may also include an inlet opening on a side of the anchor between the distal implant end and the proximal end. Further, the inlet opening, the channel, and the outlet opening may be configured to convey fluid therethrough and the implant is configured for implantation in a bone such that when fully implanted, the side inlet opening is buried in the bone.

Claims

1. An implant apparatus, comprising:

an anchor having a distal implant end and an opposite proximal end;

a channel extending through a portion of the anchor, the channel having an outlet opening in the distal implant end, and an inlet opening on a side of the anchor between the distal implant end and the proximal end, wherein the inlet opening, the channel, and the outlet opening are configured to convey fluid therethrough; and

wherein the implant is configured for implantation in a bone such that when fully implanted, the side inlet opening is buried in the bone.

2. The implant apparatus of claim 1, wherein the anchor is configured to alternatively assume a partially-implanted orientation and a fully-implanted orientation, wherein in the partially implanted orientation the side inlet opening is configured to protrude from the bone to permit access to the channel, and wherein in the fully-implanted orientation the side inlet opening is buried in the bone to block access to the channel.

3. The implant apparatus of claim 1, wherein the proximal end is configured so that a prosthesis is connectable thereto.

4. The implant apparatus of claim 2, wherein the anchor is configured for insertion in a jaw bone, and wherein the proximal end is configured to permit a prosthetic tooth to be connected thereto when the anchor is in the fully inserted position.

5. The implant apparatus of claim 1, wherein the channel extends in a direction from the distal end toward the proximal end, and the inlet opening is spaced from the proximal end.

6. The implant apparatus of claim 4, wherein the anchor is configured so that when fully implanted, the inlet opening is completely located at least 1 mm within the bone.

7. The implant apparatus of claim 4, wherein the anchor is configured so that when fully implanted, the inlet opening is completely located at least 3 mm within the bone.

8. The implant apparatus of claim 2 further including at least one self-tapping surface located in a region of the distal implant end and at least one milling edge on the implant end adjacent to the outlet opening.

9. The implant apparatus of claim 8 wherein a plurality of milling edges bound the outlet opening in the distal end of the implant.

10. The implant apparatus of claim 8 wherein the at least one milling edge is configured to perform at least one of breaking through bone and grinding bone.

11. The implant apparatus of claim 8, wherein the anchor is configured to rotate within an osteotomy in a jaw bone and to mill an edge of the osteotomy as the implant is rotated.

12. The implant apparatus of claim 11, further including at least one thread formed on the anchor, and wherein the self-tapping surface, the at least one milling edge, and the at least one thread are configured to cooperate so that when fluid is conveyed through the channel during an implant procedure, the fluid is substantially prevented from leaking between the implant and the jaw bone.

13. The implant apparatus of claim 1, further comprising at least one milling edge on the implant end configured so that a protective buffer of milled bone material is retained against the distal end, and wherein the anchor is configured for insertion in a patient'"'"'s maxillary bone such that when the distal end breaks through the maxillary bone the protective buffer protects a Schneiderian membrane from the distal end.

14. The implant apparatus of claim 13, wherein the distal end has a concave shape.

15. The implant apparatus of claim 4, further comprising an inlet conduit configured to direct fluid into the channel through the side inlet opening and an integral connection between the anchor and the inlet conduit, the integral connection being configured to be permanently severed during an implantation procedure.

16. The implant apparatus of claim 4, wherein the side inlet opening is configured to be selectively connectable to an inlet conduit for directing fluid into the channel.

17. The implant apparatus of claim 15 wherein the integral connection includes a weld.

18. The implant apparatus of claim 15, wherein the integral connection includes a weakened region, such that the inlet conduit is configured to sever from the anchor at the weakened region.

19. The implant apparatus of claim 18, wherein the weakened region includes a substantially V shaped groove.

20. The implant apparatus of claim 15, further comprising a lever, accessible from the proximal end, for permitting a user to exert force on and sever the integral connection.

21. The implant apparatus of claim 15, wherein the integral connection is configured to sever at a location internally spaced from an external surface of the anchor.

22. The implant apparatus of claim 1, further comprising a quantity of bone augmenting material and at least one conduit connectable to the side inlet opening and for conveying the bone augmenting material through the inlet opening in the side of the anchor.

23. The implant apparatus of claim 22, further comprising a syringe for containing the bone augmenting material.

24. An implant apparatus, comprising:

an elongated anchor having a distal implant end and an opposite proximal end;

a channel extending through a portion of the anchor in a generally longitudinal direction of the anchor, the channel extending through only a portion of the anchor, from a side inlet opening to the outlet opening on the distal end;

wherein the inlet opening, the channel, and the outlet opening are configured to convey fluid therethrough.

25. An implant method, comprising:

drilling a hole in a maxillary bone;

inserting an implant into the hole in a manner forming a substantially liquid tight seal between the implant and the maxillary bone; and

lifting a Schneiderian membrane by introducing fluid through a channel in the implant such that the fluid contacts the Schneiderian membrane and exerts a force thereon, causing a space between the maxillary bone and the Schneiderian membrane.

26. The method of claim 25, further comprising draining the fluid from the space via the channel in the implant.

27. The method of claim 25, further including milling bone material and retaining milled bone material adjacent a distal end of the implant to form a protective buffer between the distal end and the Schneiderian membrane.

28. The method of claim 25, further comprising conveying bone regenerative material through the channel and into the space.

29. The method of claim 25, wherein the introducing fluid includes introducing fluid through a side inlet opening in the implant, and further comprising subsequently further inserting the implant into the maxillary bone such that the side inlet opening is buried inside the bone.