Inflatable device for use in surgical protocol relating to fixation of bone
First Claim
1. A balloon for use in treating a bone predisposed to fracture or to collapse, or that is fractured or collapsed, comprising:
- an inflatable, non-expandable balloon body for insertion into said bone, said body having a predetermined shape and size, when substantially fully inflated, sufficient to compress at least a portion of the inner cancellous bone to create a cavity in said cancellous bone, said balloon body being restrained to create said predetermined shape and size so that the fully inflated balloon is prevented from applying excessive pressure to the inner surface of the outer cortical bone if said bone is unfractured or uncollapsed.
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Accused Products
Abstract
A balloon for use in compressing cancellous bone and marrow (also known as medullary bone or trabecular bone) against the inner cortex of bones whether the bones are fractured or not. The balloon comprises an inflatable, non-expandable balloon body for insertion into said bone. The body has a shape and size to compress at least a portion of the cancellous bone to form a cavity in the cancellous bone and to restore the original position of the outer cortical bone, if fractured or collapsed. The balloon is prevented from applying excessive pressure to the outer cortical bone. The wall or walls of the balloon are such that proper inflation the balloon body is achieved to provide for optimum compression of all the bone marrow. The balloon is able to be folded so that it can be inserted quickly into a bone. The balloon can be made to have a suction catheter. The main purpose of the balloon is the forming or enlarging of a cavity or passage in a bone, especially in, but not limited to, vertebral bodies.
200 Citations
84 Claims
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1. A balloon for use in treating a bone predisposed to fracture or to collapse, or that is fractured or collapsed, comprising:
an inflatable, non-expandable balloon body for insertion into said bone, said body having a predetermined shape and size, when substantially fully inflated, sufficient to compress at least a portion of the inner cancellous bone to create a cavity in said cancellous bone, said balloon body being restrained to create said predetermined shape and size so that the fully inflated balloon is prevented from applying excessive pressure to the inner surface of the outer cortical bone if said bone is unfractured or uncollapsed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 67, 68, 69)
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49. A non-expandable balloon device suitable for compressing cancellous bone comprising:
a hollow, flexible, inflatable, non-expandable balloon body having a shape approximating a configuration taken from the group including a square, a rectangle, an oblong member and a cylinder, said body having a shape, when substantially fully expanded, to form a pair of sides, said body having restraints operable to cause the sides to be substantially parallel with each other when inflated. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. An inflatable device for insertion into a cortical bone to be treated for cavity formation and for compacting the bone marrow and trabecular bone thereof comprising:
a balloon body having flexible non-expandable wall means for conforming to the shape of the inner cortical surface of the bone to be treated, said wall means including a generally continuous side wall and a pair of opposed end walls integral with the side wall, said balloon having a fluid duct for directing an inflating liquid into the balloon, whereby the balloon can be inflated, said walls extending outwardly and into engagement with the inner surface of the bone to be treated and into compacting relationship to the cancellous bone. - View Dependent Claims (61, 62, 63, 64, 65, 66, 70, 71, 72, 73, 74, 75)
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76. A method for treating a bone predisposed to fracture or to collapse, or fractured or collapsed, comprising:
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providing a hollow, collapsible, inflatable, non-expandable cavity former;
inserting the cavity former while collapsed into said bone with said cavity former having a predetermined shape and size, when substantially fully inflated;
inflating the cavity former to a sufficient fluid pressure to compress at least a portion of the inner cancellous bone;
forming a cavity in the cancellous bone as a function of the inflating step wherein said cavity will have the predetermined shape and size appropriate for the bone to be treated; and
restraining the cavity former to create said predetermined shape and size, preventing the cavity former from applying excessive pressure to the inner surface of the cortical bone if said bone is unfractured or uncollapsed. - View Dependent Claims (77, 78, 79, 80, 81, 82, 83, 84)
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Specification