Cancellous bone is accessed through a subcutaneous access path in soft tissue. A cavity is formed in cancellous bone by a cavity forming tool that is advanced through the subcutaneous access path into cancellous bone and manipulated to form the cavity. A measured volume of bone filling material is d
Cancellous bone is accessed through a subcutaneous access path in soft tissue. A cavity is formed in cancellous bone by a cavity forming tool that is advanced through the subcutaneous access path into cancellous bone and manipulated to form the cavity. A measured volume of bone filling material is delivered into the cavity through the subcutaneous access path by a nozzle having an interior bore defining an interior volume sized for containing bone filling material, which is advanced through the subcutaneous access path. A nested instrument is formed while clearing residual bone filling material from the interior bore by an auxiliary tool that can be manipulated independently of the nozzle, which is advanced through the interior bore of the nozzle.
대표청구항▼
We claim: 1. A method comprising accessing cancellous bone through a subcutaneous access path in soft tissue, forming a cavity in cancellous bone including providing a cavity forming tool, advancing the cavity forming tool through the subcutaneous access path into cancellous bone, and manipulating
We claim: 1. A method comprising accessing cancellous bone through a subcutaneous access path in soft tissue, forming a cavity in cancellous bone including providing a cavity forming tool, advancing the cavity forming tool through the subcutaneous access path into cancellous bone, and manipulating the cavity forming tool to form the cavity, delivering a measured volume of bone filling material into the cavity through the subcutaneous access path including providing a nozzle having an interior bore defining an interior volume sized for containing bone filling material for delivery into the cavity, and advancing the nozzle through the subcutaneous access path, and, subsequent to the delivering step, forming a nested instrument while clearing residual bone filling material from the interior bore including providing an auxiliary tool that can be manipulated independently of the nozzle, and advancing the auxiliary tool through the interior bore of the nozzle, and then tamping residual bone filling material out of the access path and into the cavity by moving the nested instrument, defined by the nozzle and the auxiliary tool disposed therein, distally through the access path. 2. A method comprising accessing cancellous bone through a subcutaneous access path in soft tissue, forming a cavity in cancellous bone including providing a cavity forming tool, advancing the cavity forming tool through the subcutaneous access path into cancellous bone, and manipulating the cavity forming tool to form the cavity, delivering a measured volume of bone filling material into the cavity through the subcutaneous access path including providing a nozzle having an interior bore defining an interior volume sized for containing bone filling material for delivery into the cavity, and advancing the nozzle through the subcutaneous access path, and, subsequent to the delivering step, forming a nested instrument while clearing residual bone filling material from the interior bore including providing an auxiliary tool that can be manipulated independently of the nozzle, and advancing the auxiliary tool through the interior bore of the nozzle to substantially fully occupy the entire interior bore, and then tamping residual bone filling material out of the access path and into the cavity by moving the nested instrument, defined by the nozzle and the auxiliary tool disposed therein, distally through the access path. 3. A method comprising accessing cancellous bone through a subcutaneous access path in soft tissue, forming a cavity in cancellous bone including providing a cavity forming tool, advancing the cavity forming tool through the subcutaneous access path into cancellous bone, and manipulating the cavity forming tool to form the cavity, delivering a measured volume of bone filling material into the cavity through the subcutaneous access path including providing a nozzle having an interior bore defining an interior volume sized for containing bone filling material for delivery into the cavity, advancing the nozzle through the subcutaneous access path, and, subsquent to the delivery step, removing the nozzle from the access path, using the removed nozzle to form a nested tamping instrument sized for occupying the subcutaneous access path, and being operatively movable therethrough to force residual bone filling material out of the access path and into the cavity, the using step including providing an auxiliary tool that can be manipulated independently of the nozzle, and advancing the auxiliary tool through the interior bore of the removed nozzle to substantially fully occupy the entire interior bore while clearing residual bone filling material from the interior bore. 4. A method according to claim 3 further including manipulating the nested tamping instrument in the subcutaneous access path to displace residual bone filling material into the cavity. 5. A method according to claim 1 or 2 or 3 wherein accessing cancellous bone includes providing a cannula. 6. A method according to claim 1 or 2 or 3 wherein the void forming tool that is provided comprises an expandable body. 7. A method according to claim 6 wherein the expandable body, when expanded, assumes a non-spherical shape. 8. A method according to claim 1 or 2 or 3 wherein the nozzle that is provided comprises an elongate tube. 9. A method according to claim 1 or 2 or 3 further including manipulating a delivery device to conduct bone filling material into the nozzle. 10. A method according to claim 1 or 2 or 3 wherein the nozzle that is provided has a length and includes measured markings along the length. 11. A method according to claim 1 or 2 or 3 wherein the auxiliary tool that is provided comprises an elongate body. 12. A method according to claim 1 or 2 or 3 wherein the nozzle that is provided is made from a generally flexible material. 13. A method according to claim 1 or 2 or 3 wherein the nozzle that is provided is made from a generally rigid material. 14. A method according to claim 1 or 2 or 3 wherein the bone filling material comprises at least one of a flowable material that hardens to a rigid state, a bone cement, autograft material, allograft material, calcium carbonate, demineralized bone matrix material, and calcium phosphate. 15. A method according to claim 1 or 2 or 3 wherein the cavity forming tool that is provided includes an expandable body. 16. A method according to claim 15 wherein the expandable body expands by inflation. 17. A method according to claim 15 wherein the expandable body comprises a balloon. 18. A method according to claim 1 or 2 or 3 wherein manipulating the cavity forming tool compresses cancellous bone. 19. A method according to claim 1 or 2 or 3 wherein manipulating the cavity forming tool moves fractured cortical bone. 20. A method according to claim 1 or 2 or 3 wherein the cavity forming tool that is provided includes an elongate member sized and configured to pass through the access path. 21. A method according to claim 20 wherein the elongate member comprises a catheter. 22. A method according to claim 1 or 2 or 3 wherein the auxiliary tool is a stylet.
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