摘要:
A kit contains a receptacle for receiving components of a bone filling material in an unmixed condition. The kit also contains a base sized and configured to support the receptacle an upright condition during use and also being sized and configured for resisting tipping of the receptacle during use. The kits contains a mixing element sized and configured for insertion into the receptacle while the base supports the receptacle in the upright condition, to mix the components of the bone filling material within the receptacle. The mixing element is also sized for withdrawal from the receptacle after mixing of the components. The kits contains a plunger element sized and configured for insertion, after withdrawal of the mixing element means, into the receptacle for advancement through the receptacle, to dispense the mixed components of the bone filling material from the receptacle while the base supports the receptacle in the upright condition. The bone filling material can be dispensed, e.g., into a bone filler device.
摘要:
A balloon for use in compressing cancellous bone and marrow (also known as medullary bone or trabecular bone). The balloon comprises an inflatable 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/or to restore the original position of the outer cortical bone, if fractured or collapsed. The balloon desirably incorporates restraints which inhibit the balloon from applying excessive pressure to various regions of the cortical bone. The wall or walls of the balloon are such that proper inflation of the balloon body is achieved to provide for optimum compression of the bone marrow. The balloon can be inserted quickly into a bone. The balloon can be made to have a suction catheter. The balloon can be used to form and/or enlarge a cavity or passage in a bone, especially in, but not limited to, vertebral bodies. Various additional embodiments facilitate directionally biasing the inflation of the balloon.
摘要:
A percutaneous path is created into a bone having an interior volume occupied, at least in part, by a cancellous bone, e.g., a vertebral body. An expandable bio-absorbable structure is introduced into the cancellous bone by deployment of a tool through the percutaneous path into the cancellous bone. The expandable bio-absorbable structure is expanded and the tool withdrawn, leaving the expandable bio-absorbable structure expanded inside the cancellous bone. Expansion of the expandable bio-absorbable structure within cancellous bone can, e.g., compact cancellous bone, and/or create a cavity in cancellous bone, and/or move fractured cortical bone.
摘要:
A shaft member is sized and configured for introduction through a percutaneous access path into a cancellous bone volume. The shaft has an elongated axis. A cutting blade is sized and configured to be carried by the shaft member and project radially outward of the elongated axis into contact with cancellous bone. The cutting blade is capable of cutting cancellous bone in a path about the elongated axis in response to rotation of the shaft member within cancellous bone.
摘要:
A first instrument having a distal end is sized and configured to penetrate tissue and a proximal end comprising a first handle assembly. A second instrument including an interior lumen is sized and configured to accept passage of the first instrument. The second instrument has a proximal end comprising a second handle assembly sized and configured to releasably interlock with the first handle assembly to form a composite instrument sized and configured to provide percutaneous access to a cancellous bone region. The second handle assembly is also sized and configured to permit controllably release by a user of the first handle assembly from the second handle assembly to allow removal of the first instrument from the interior lumen. At least one additional instrument is sized and configured for passage through the interior lumen of the second instrument upon removal of the first instrument.
摘要:
A filler instrument comprises a first chamber section having a first cross sectional area and a second chamber section having a second cross sectional area less than the first cross sectional area. The second chamber section communicates with the first chamber section. The first chamber section includes an inlet for receiving a material into the filler instrument, and the second chamber section includes an outlet for discharging the material from the filler instrument. A first plunger is sized to pass through the first chamber section and not the second chamber section. A second plunger is sized to pass through an interior bore of the first plunger and into the second chamber section. In use, the first plunger displaces material residing in the first chamber section through the second chamber section toward the outlet, and the second plunger displaces material residing in the second chamber section through the outlet.
摘要:
A percutaneous path is established into a selected bone having an interior volume occupied, at least in part, by a cancellous bone, e.g., a vertebral body. An expandable mesh structure is introduced into the cancellous bone by deployment of a tool through the percutaneous path into the cancellous bone. The expandable mesh structure is expanded within cancellous bone by conveying a material into the mesh structure. Expansion of the mesh structure can, e.g., compact cancellous bone, and/or form a cavity in cancellous bone, and/or move fractured cortical bone.
摘要:
A structure adapted to assume an expanded geometry having a desired configuration when used in bone includes material that limits the expanded geometry. The structure undergoes stress when expanded during its first use in bone. As a result, the structure can not be relied upon to reach its desired configuration during subsequent use in bone. Accordingly, the structure is packaged in a sterile kit, which verifies to the physician or user that the device packaged within it is sterile and has not be subjected to prior use. The physician or user is thereby assured that the expandable structure meets established performance and sterility specifications, and will have the desired configuration when expanded for use.
摘要:
Several embodiments of cutting tips for tools for creating voids in interior body regions are provided. The cutting tips provide for rotational and translational cutting. An actuator mechanism for deploying a cutting tip converts the rotational movement of a wheel into translational movement of a plunger rod. The actuator mechanism provides positive cutting action as the cutting tip is moved from a first, non-deployed position to a second, deployed position and from the second, deployed position to the first, non-deployed position. Methods of creating a void in bone provide one or more mechanical cutting tools that may be used in combination with one or more expandable void-creating structures to form a void of a desired size and configuration.
摘要:
This invention relates to devices for inserting expandable structures, such as medical balloons, into interior regions of a human or animal body, as well as methods for their use. The insertion devices described herein are capable of directionally guiding and/or inhibiting expansion of an expandable structure within an interior region of an animal or human body to create optimally placed cavities for repair, augmentation and/or treatment of fractured and/or diseased bone.