Tissue puncture closure device with automatic torque sensing tamping system
AssigneeSt. Jude Medical Puerto Rico LLC
InventorAndrew Thomas Forsberg
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for sealing a puncture or incision formed percutaneously in tissue separating two internal portions of the body of a living being with an anchor, a sealing plug and a filament connecting the anchor and sealing plug are disclosed. The methods and apparatus provide for automatic tamping of the sealing plug. In addition, torque required to tamp the sealing plug is automatically sensed and gear ratios of an automatic tamping device are automatically changed in response to sensed changes in torque. A planetary transmission may be used to automatically change gear ratios in response to the changes in torque.
Claims20
A method of sealing a tissue puncture, comprising:
- providing a tissue puncture closure device comprising a filament, an anchor, a sealing plug slidingly attached to the filament adjacent to the anchor, a tamping tube, and an automatic transmission, the automatic transmission comprising a filament spool, an input gear, an output gear, at least two intermediate gears, and a clutch member operable between the at least two intermediate gears;
- deploying the anchor in the tissue puncture;
- at least partially withdrawing the closure device;
- automatically changing a gear ratio between the input and output gears to achieve a mechanical advantage when a torque of the automatic transmission exceeds a clutch breakdown value to increase a force applied to the sealing plug by the tamping tube, and automatically decrease a mechanical advantage when the torque falls below the clutch breakdown value.
A method of sealing a tissue puncture, comprising:
- providing a tissue puncture closure device comprising a filament, an anchor, a sealing plug, a tamping tube, and an automatic transmission, the automatic transmission comprising a filament spool, an input gear arranged coaxially with the filament spool, an output gear in contact with the tamping tube, and a clutch member having a predetermined torque breakdown value releasably engaging at least two of the gears;
- advancing the closure device into the tissue puncture;
- deploying the anchor in the tissue puncture;
- at least partially withdrawing the closure device;
- automatically changing a gear ratio between the input and output gears to achieve a mechanical advantage when a torque of the automatic transmission exceeds the clutch breakdown value to increase a force applied to the sealing plug, and automatically decrease a mechanical advantage when the torque falls below the clutch breakdown value.
A method of sealing a tissue puncture, comprising:
- providing a tissue puncture closure device comprising a filament, an anchor, a sealing plug, a tamping tube, and an automatic transmission, the automatic transmission comprising a filament spool, an input gear, an output gear, and at least one intermediate gear;
- advancing the closure device into the tissue puncture;
- deploying the anchor in the tissue puncture;
- at least partially withdrawing the closure device;
- automatically changing a gear ratio between the input and output gears to achieve an additional mechanical advantage when a torque of the automatic transmission exceeds a clutch breakdown value and to achieve a decreased mechanical advantage when the torque falls below the clutch breakdown value.
A method of sealing a tissue puncture, comprising:
- providing a tissue puncture closure device comprising an anchor, a sealing plug, a filament coupled to the anchor and sealing plug, and an automatic transmission, the automatic transmission comprising a filament spool having a portion of the filament wound thereon, an input gear, an output gear, and at least one intermediate gear;
- advancing the closure device into the tissue puncture;
- deploying the anchor in the tissue puncture;
- at least partially withdrawing the closure device;
- automatically compacting the sealing plug;
- automatically changing a gear ratio between the input and output gears during compacting the sealing plug to achieve an additional mechanical advantage when a torque of the automatic transmission exceeds a clutch breakdown value and to achieve a decreased mechanical advantage when the torque falls below the clutch breakdown value.
Dependencies are inferred from the claim text.