Novel banana cage
First Claim
Patent Images
1. An intervertebral fusion device comprising:
- a) an anterior wall having a convex horizontal cross section, b) a posterior wall, c) first and second end walls between the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls having a posterior portion having at least one upper opening therethrough adapted to promote bony fusion, and e) a lower bearing surface between the anterior and posterior walls having a posterior portion having and at least one lower opening therethrough adapted to promote bony fusion, wherein the upper and lower openings are in communication to promote bony fusion through the device, wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions, and wherein the posterior portion of each bearing surface is adapted to bear against the anterior half of the disc space.
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Abstract
This invention relates to an improved a banana shaped intevertebral fusion cage adapted to be located in the anterior one-half of the disc space.
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Citations
100 Claims
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1. An intervertebral fusion device comprising:
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a) an anterior wall having a convex horizontal cross section, b) a posterior wall, c) first and second end walls between the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls having a posterior portion having at least one upper opening therethrough adapted to promote bony fusion, and e) a lower bearing surface between the anterior and posterior walls having a posterior portion having and at least one lower opening therethrough adapted to promote bony fusion, wherein the upper and lower openings are in communication to promote bony fusion through the device, wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions, and wherein the posterior portion of each bearing surface is adapted to bear against the anterior half of the disc space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An intervertebral fusion device comprising:
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a) an anterior wall and a posterior wall defining a width therebetween, b) first and second end walls between the anterior and posterior walls and defining a length therebetween, wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions, wherein the width of the device is less than the length of the device, and wherein the length is less than ½
the width of the disc space. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An intervertebral fusion device adapted for non-linear insertion comprising:
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a) an anterior wall having a convex shape, b) a posterior wall, c) first and second end walls between the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls, and having an anterior portion and a posterior portion, and e) a lower bearing surface between the anterior and posterior walls, f) first and second transverse struts extending from the anterior portion of the upper bearing surface to the posterior portion of the upper bearing surface. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An intervertebral fusion device comprising:
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a) an anterior wall having a leading end and a trailing end b) a posterior wall having a leading end and a trailing end, c) a leading end wall connecting the leading ends of the anterior and posterior walls and having a leading insertion hole, d) a trailing end wall connecting the anterior and posterior walls and having a trailing insertion hole, wherein the anterior and posterior walls define a centerline therebetween, and wherein the leading and trailing insertion holes are disposed asymmetrically about the centerline. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. An intervertebral fusion device comprising:
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a) an anterior wall having a convex shape and a maximum height, b) a posterior wall having a concave shape and a maximum height, c) first and second end walls between the anterior and posterior walls, wherein the maximum height of the anterior wall is less than the maximum height of the posterior wall. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. An intervertebral fusion device comprising:
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a) an anterior wall having a convex horizontal cross section, b) a posterior wall, c) first and second end walls between the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls having an anterior portion and a posterior portion, and e) a lower bearing surface between the anterior and posterior walls, and f) first and second transverse struts extending from the anterior portion of the upper bearing surface to the posterior portion of the upper bearing surface, wherein the upper and lower bearing surfaces form teeth extending from each of the transverse struts and are adapted to grip the vertebral endplates. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. An intervertebral fusion device comprising:
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a) an anterior wall having a horizontal cross section having a convex shape and a recessed portion, b) a posterior wall, c) first and second end walls between the anterior and posterior walls, d) an upper bearing surface between the anterior and posterior walls having at least one upper opening therethrough adapted to promote bony fusion, and e) a lower bearing surface between the anterior and posterior walls having at least one lower opening therethrough adapted to promote bony fusion. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. An intervertebral fusion device comprising:
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a) an anterior wall having a convex shape, b) a posterior wall, c) first and second end walls connecting the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls and having at least one upper opening therethrough adapted to promote bony fusion, and e) a lower bearing surface between the anterior and posterior walls and having at least one lower opening therethrough adapted to promote bony fusion, wherein the end walls form wings extending tangentially from the normal curve of the anterior wall. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80)
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81. An intervertebral fusion device comprising:
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a) an anterior wall having a convex shape, and a maximum height, b) a posterior wall having a concave shape, c) first and second end walls connecting the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls and having a middle portion having a recess, lateral end portions, and at least one upper opening therethrough adapted to promote bony fusion, and e) a lower bearing surface having an anterior portion below the anterior wall, a posterior portion below the posterior wall, and at least one lower opening therethrough adapted to promote bony fusion. - View Dependent Claims (82, 83, 84, 85, 86, 87, 88, 89, 90, 92, 98)
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91. An intervertebral fusion device comprising:
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a) an anterior wall having a convex shape, b) a posterior wall, c) first and second end walls between the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls having at least one upper opening therethrough adapted to promote bony fusion, and e) a lower bearing surface between the anterior and posterior walls having at least one lower opening therethrough adapted to promote bony fusion, and f) a horizontally disposed ridge extending anteriorly from anterior wall. - View Dependent Claims (93, 94, 95, 96, 97, 99, 100)
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Specification