Implant for use as replacement of an orbita bottom

• US 7,662,155 B2
• Filed: 02/16/2006
• Issued: 02/16/2010
• Est. Priority Date: 12/29/2005
• Status: Active Grant

• Current Assignee: Synthes USA LLC (Johnson & Johnson)
• Original Assignee: Synthes USA LLC (Johnson & Johnson)
• Inventors: Schmelzeisen, Rainer, Metzger, Marc Christian
• Primary Examiner(s): Sweet; Thomas J
• Assistant Examiner(s): Sharma; Yashita
• Application Number:
  US11/356,446
• Publication Number:
  US 20070156146A1
• Time in Patent Office: 1,461 Days
• Field of Search: 623/6.64, 623/17.18, 623/17.19, 623/23.43, 623/23.54, 623/6.44, 623/6.55, 606/70, 606/71, 606/280, 606/283, 606/285, 606/903, 606/906
• US Class Current: 606/71
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61F 2/2875 Skull or cranium A61F2/2803 and A61F2/3099 take precedence
• CPC Class Codes: A61F 2002/2878 for orbital repair
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30156 triangular
• CPC Class Codes: A61F 2002/30158 trapezoidal
• CPC Class Codes: A61F 2002/30561 breakable or frangible
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2230/0023 triangular
• CPC Class Codes: A61F 2230/0026 trapezoidal
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

The implant according to the invention is intended to be used as a replacement for an orbita bottom and optionally also for the medial orbita wall. The implant comprises the form of a single-piece preformed plate or grid which comprises a first segment, a second segment and a third segment. The first segment is designed in accordance with the form of the orbita bottom and the second segment is designed according to the form of the medial side-wall. The first and second segments adjoin each other along a first preset breaking line. The third segment adjoins the first segment and is arranged for fixing the implant to the lateral orbita edge.

Claims

1. Implant for use as a replacement for an orbita bottom and optionally also for the medial orbita wall in the form of a single-piece preformed plate that comprises a first segment, a second segment and a third segment, and

wherein the first segment is formed in accordance with an orbita bottom and comprises an elevation, the second segment is formed according to the medial wall, and the second segment is removable from the first segment along a first preset breaking line that adjoins the first and second segments, and

wherein the third segment is arranged for fixing the implant at a lateral orbita edge.

3. Implant according to claim 1, wherein the third segment is formed according to the latero-caudal orbita edge.

4. Implant according to claim 1, wherein said plate comprises a smooth surrounding edge.

6. Implant according to claim 1, wherein a second preset breaking line is provided in said first segment, said second preset breaking line being arranged to remove a part of the first segment which is turned away from the third segment from the implant.

7. Implant according to claim 1, wherein the first preset breaking line runs along a grid stay.

8. Implant according to claim 6, wherein said second preset breaking line runs along a grid stay.

9. Implant according to claim 1, wherein said implant is made of at least one of titan, a titan alloy, plastic, and resorbing materials.

10. Implant according to claim 1, wherein the first segment comprises a convex form proximate to the third segment.

15. Implant to claim 6, wherein said implant is made of at least one of titan, a titan alloy, plastic, and resorbing materials.

2. Implant for use as a replacement for an orbita bottom in the form of a single-piece preformed grid that comprises a first segment, a second segment and a third segment, and

wherein the first segment is formed in accordance with an orbita bottom and comprises an elevation, and the second segment is formed according to the medial side-wall and wherein said first and second segments adjoin along a first preset breaking line, and

wherein the third segment is arranged for fixing the implant at the lateral orbita edge.

5. Implant according to claim 2, wherein said grid comprises a smooth surrounding edge.

11. Implant according to claim 2, wherein the third segment is formed according to the latero-caudal orbita edge.

12. Implant according to claim 2, wherein a second preset breaking line is provided in said first segment, said second preset breaking line being arranged to remove a part of the first segment which is turned away from the third segment from the implant.

13. Implant according to claim 2, wherein the first preset breaking line runs along a grid stay.

14. Implant to claim 2, wherein said implant is made of at least one of titan, a titan alloy, plastic, and resorbing materials.

16. Implant according to claim 2, wherein the first segment comprises a convex form proximate to the third segment.

17. An orbita implant for use to repair an orbita bottom, comprising:

(a) a first segment, formed in accordance with the orbita bottom, comprising a basic side and an opposite side, a first lateral side extending between the basic side and the opposite side, and an elevation located proximate to the opposite side, wherein the elevation is a convex surface feature on the first segment covering a medically significant portion of the first segment;

(b) a second segment, formed in accordance to a medial side-wall and angularly offset with respect to the first segment, the second segment removably adjoined to the first segment along a first preset breaking line opposite the first lateral side; and

(c) a third segment, arranged for fixing the implant at a lateral orbita edge, the third segment connected to the first segment.

18. The orbita implant of claim 17, wherein the first segment further comprises a convex form proximate to the basic side.

19. The orbita implant of claim 17, further comprising a second preset breaking line running at least generally parallel with the basic side of the first segment to adjust the depth of the first segment.

20. The orbita implant of claim 17, wherein the elevation extends into the second segment.

21. The orbita implant of claim 19, wherein the elevation extends distally beyond the second preset breaking line.