Bone expansion systems and methods
AssigneeKyphEZE, Inc.
InventorsDavid F. Kallmes, Waleed Brinjikji
Life of this patent
Estimating the term…
Abstract
A needle-mounted balloon system can include a cannula and a stylet. The cannula may include a handle and an outer sheath, and the outer sheath may be configured to retract and expose at least a portion of an expandable member. The stylet may include a stylet needle and a sharp distal tip portion. The stylet needle may be used to insert the system into a body structure, after which the stylet may be disengaged from the cannula. The expandable member may then be exposed and inflated to create a space in the body structure. Filler material may be injected through the cannula to the open space in an effort to stabilize an injured or otherwise destabilized portion of the body structure.
Claims21
A needle-mounted balloon system, comprising:
- a cannula comprising:
- a handle;
- a cannula hub coupled within a housing of the handle;
- a cannula tube portion extending distally from the cannula hub, the cannula tube portion defining a lumen therethrough;
- and
- an expandable member coupled to the cannula tube portion, the expandable member being reconfigurable between a diametrically contracted configuration and a diametrically expanded configuration;
- and
- a stylet that is engageable with the cannula, the stylet comprising:
- a stylet hub detachably coupled to the handle;
- and
- a stylet needle extending distally from the stylet hub, wherein the stylet needle is slideably disposable within the lumen of the cannula tube portion, wherein, when the stylet is fully engaged with the cannula, a sharp distal tip portion of the stylet needle extends distally beyond the cannula tube portion, and wherein the expandable member is expandable when the stylet is disengaged from the cannula.
A method for creating a space in a body structure and injecting a filler material into the space, the method comprising:
- inserting a distal end portion of a needle-mounted balloon system into the body structure, wherein the needle-mounted balloon system comprises;
- a cannula comprising:
- a handle;
- a cannula hub coupled within a housing of the handle;
- a cannula tube portion extending distally from the cannula hub, the cannula tube portion defining a lumen therethrough;
- and
- an expandable member coupled to the cannula tube portion, the expandable member being reconfigurable between a diametrically contracted configuration and a diametrically expanded configuration;
- and
- a stylet that is engageable with the cannula, the stylet comprising:
- a stylet hub detachably coupled to the handle;
- and
- a stylet needle extending distally from the stylet hub, wherein the stylet needle is slideably disposable within the lumen of the cannula tube portion, wherein, when the stylet is fully engaged with the cannula, a sharp distal tip portion of the stylet needle extends distally beyond the cannula tube portion, and wherein the expandable member is expandable when the stylet is disengaged from the cannula;
- reconfiguring the expandable member from the diametrically contracted configuration to the diametrically expanded configuration while the expandable member is in the body structure;
- reconfiguring the expandable member from the diametrically expanded configuration to the diametrically contracted configuration such that an open space remains in the body structure;
- and
- injecting the filler material into the open space.
Dependencies are inferred from the claim text.