Skull base closure systems and methods
AssigneeStryker European Operations Limited
InventorsPatrick Eoin Cushen, Johannes Jacobus Jacobs
Life of this patent
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Abstract
The present disclosure provides a bioresorbable foam closure device for trans-nasally closing an opening in a base of a skull. The closure device comprises a phase-separated polymer. The device includes a stem portion having a proximal end and a distal end, and a head portion at the distal end of the stem portion. The closure device is deformed from a free shape to a constricted shape, inserted through a nasal cavity and into the opening, and released to at least partially revert back to the free shape such that the stem portion fills the opening and the head portion abuts cranium and dura to secure the closure device in position and seal the opening.
Claims19
A surgical tool for trans-nasally placing a bioresorbable foam closure device in an opening in a base of a skull, the closure device having a stem portion and a head portion, the surgical tool comprising:
- a body defining an inner channel, the body having a handle, a dispensing tip, and a central section therebetween, the dispensing tip having a tapered profile between a first region and a second region, the first region having a greater diameter than the second region;
- and a shaft moveably disposed in the inner channel of the body, the shaft having a control surface at a proximal region and a deformable head at a distal region, the shaft and the deformable head cooperate to define a lumen to accommodate a portion of the closure device;
- wherein upon actuation of the control surface, the deformable head moves between a first state in which the deformable head is outside of the second region of the dispensing tip and a second state where the deformable head is at least partially within the second region of the dispensing tip, wherein a diameter of the deformable head in the first state is greater than a diameter of the deformable head in the second state;
- and
- wherein the control surface comprises a thumb stirrup.
A system for trans-nasally closing an opening in a base of a skull, the system comprising:
- a bioresorbable foam closure device for trans-nasally closing an opening in a base of a skull, the device comprising a stem portion having a proximal end and a distal end, and a head portion at the distal end having at least one dimension being larger than the stem portion;
- and
- a surgical tool comprising:
- a body defining an inner channel, the body having a handle, a dispensing tip, and a central section therebetween, the dispensing tip having a tapered profile between a first region and a second region, the first region having a greater diameter than the second region;
- and a shaft moveably disposed in the inner channel of the body, the shaft having a control surface at a proximal region and a deformable head at a distal region, the shaft and the deformable head cooperate to define a lumen to accommodate a portion of the closure device;
- wherein upon actuation of the control surface, the deformable head moves between a first state in which the deformable head is outside of the second region of the dispensing tip and a second state where the deformable head is at least partially within the second region of the dispensing tip, wherein a diameter of the deformable head in the first state is greater than a diameter of the deformable head in the second state.
Dependencies are inferred from the claim text.