Device, system and method for delivering a curable material into bone
First Claim
1. A cannula device for delivering a curable material, such as bone cement, into bone as part of a curable material delivery system, the device comprising:
- a delivery cannula defining;
an open, proximal end, a deflectable segment opposite the proximal end and terminating in a closed distal end having a blunt tip, a lumen extending from the proximal end, at least one side orifice formed adjacent to, and proximally spaced from, the distal end and fluidly connected to the lumen, wherein the deflectable segment forms a curved shape in longitudinal extension and has a shape memory characteristic such that the deflectable segment is configured to assume a longitudinally, substantially straightened form when subjected to a force and naturally revert to the curved shape upon removal of the force; and
a hub forming a fluid port fluidly coupled to the proximal end.
3 Assignments
0 Petitions
Accused Products
Abstract
A curable material delivery cannula device is disclosed. The device includes a cannula and a hub. The cannula includes an open proximal end, a deflectable segment forming a pre-set curve, a lumen, and side orifice(s) adjacent, and proximally spaced from, the distal end and fluidly connected to the lumen. When inserted within a guide cannula, the deflectable segment straightens. When distally extended from the guide cannula, the deflectable segment reverts to the curved shape. The distal end has a blunt tip for non-traumatic interface with bodily material. During use, curable material, such as bone cement, is delivered from the side orifice(s) in a radial direction relative to the lumen.
190 Citations
34 Claims
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1. A cannula device for delivering a curable material, such as bone cement, into bone as part of a curable material delivery system, the device comprising:
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a delivery cannula defining;
an open, proximal end, a deflectable segment opposite the proximal end and terminating in a closed distal end having a blunt tip, a lumen extending from the proximal end, at least one side orifice formed adjacent to, and proximally spaced from, the distal end and fluidly connected to the lumen, wherein the deflectable segment forms a curved shape in longitudinal extension and has a shape memory characteristic such that the deflectable segment is configured to assume a longitudinally, substantially straightened form when subjected to a force and naturally revert to the curved shape upon removal of the force; and
a hub forming a fluid port fluidly coupled to the proximal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 23, 24)
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19. An intraosseous, curable material delivery system for delivering a curable material such as bone cement to a delivery site within bone, the system comprising:
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a delivery cannula defining;
an open, proximal end, a deflectable segment opposite the proximal end and terminating in a closed distal end having a blunt tip, a lumen extending from the proximal end, at least one side orifice formed adjacent to, and proximally spaced from, the distal end and fluidly connected to the lumen, wherein the deflectable segment has a shape memory characteristic and assumes a curved shape in longitudinal extension;
a hub forming a fluid port fluidly coupled to the proximal end; and
a guide cannula defining an inner diameter greater than an outside diameter of the delivery cannula and having an open distal tip;
wherein the deflectable segment is configured to be deflectable to a substantially straightened shape such that the delivery cannula is slidable within the guide cannula, and to naturally revert to the curved shape when extended distal the distal tip for delivery of a curable material within bone via the at least one side orifice. - View Dependent Claims (20, 21, 22, 25, 26)
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27. A method of stabilizing a bone structure of a human patient, the method comprising:
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providing a delivery cannula defining;
an open, proximal end, a deflectable segment opposite the proximal end and terminating in a closed distal end having a blunt tip, a lumen extending from the proximal end, at least one side orifice formed adjacent to, and proximally spaced from, the distal end and fluidly connected to the lumen, wherein the deflectable segment has a shape memory characteristic and naturally assumes a curved shape in longitudinal extension;
locating a distal tip of a guide cannula within the bone structure;
inserting the delivery cannula within the guide cannula, characterized by the deflectable segment deflecting to a substantially straightened shape within the guide cannula;
distally advancing the delivery cannula such that the distal end and at least a portion of the deflectable segment projects distal the distal tip, characterized by the portion of the deflectable segment distal the distal tip naturally reverting to the curved shape;
positioning the distal end distally adjacent a desired delivery site within the bone structure;
injecting a curable material into the lumen;
delivering the curable material to the delivery site via the at least one side orifice otherwise proximally spaced from the distal end; and
allowing the curable material to cure to stabilize the bone structure. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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Specification