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US 12,685,590 B2Granted
Laser fiber displacement system and methods
AssigneeMedtronic Navigation, Inc.
InventorOrey Block
Life of this patent
Estimating the term…
Abstract
Systems and methods used to ablate tissues using laser energy are disclosed. The systems and methods may be configured to remotely displace a laser fiber to ablate more than one zone of tissue. The systems can include a displacement device comprising a linear displacement member configured to longitudinally displace the laser fiber. The systems can also include a sleeve configured to maintain a cooling catheter in a longitudinal stationary position when the laser fiber is displaced.
Claims20
A laser fiber displacement system, comprising:
- a displacement device, comprising:
- a housing;
- a linear slide coupled to the housing;
- a carriage slidingly coupled to the linear slide, wherein the carriage is configured to longitudinally move relative to the housing along the linear slide between a proximal position of the carriage and a distal position of the carriage;
- and
- a clamp coupled to the carriage, the clamp comprising a slot extending into a side of the clamp, wherein the slot extends along a longitudinal length of the carriage, wherein the slot is configured to selectively receive a laser fiber, and wherein the clamp is configured to apply a clamping force that secures the laser fiber to the carriage;
- and
- a sleeve comprising a lumen configured to receive the laser fiber within the lumen of the sleeve, the sleeve configured to selectively couple a cooling catheter to the displacement device,
- wherein the displacement device is configured to longitudinally displace the laser fiber relative to the cooling catheter through the lumen as the carriage longitudinally moves between the proximal position of the carriage and the distal position of the carriage, and wherein the sleeve is configured to resist longitudinal compression such that the cooling catheter remains stationary relative to the housing as the carriage longitudinally moves between the proximal position of the carriage and the distal position of the carriage.
6 more elements
A method of ablating a tissue, comprising:
- inserting a laser fiber and a cooling catheter into a target ablation region;
- transmitting laser energy through the laser fiber to ablate a first tissue zone in the target ablation region;
- displacing, via a displacement device of a laser fiber displacement system, the laser fiber from the first tissue zone to a second tissue zone in the target ablation region, wherein the displacement device comprises:
- a housing;
- a linear slide coupled to the housing;
- a carriage slidingly coupled to the linear slide, wherein the carriage is configured to longitudinally move relative to the housing along the linear slide between a proximal position of the carriage and a distal position of the carriage;
- and
- a clamp coupled to the carriage, the clamp comprising a slot extending into a side of the clamp, wherein the slot extends along a longitudinal length of the carriage, wherein the slot is configured to selectively receive the laser fiber, wherein the clamp is configured to apply a clamping force that secures the laser fiber to the carriage,
- wherein displacing the laser fiber comprises longitudinally displacing the laser fiber through a sleeve of the laser fiber displacement system that is coupled to the cooling catheter as the carriage longitudinally moves between the proximal position of the carriage and the distal position of the carriage, and wherein the sleeve resists longitudinal displacement of the cooling catheter;
- and
- transmitting laser energy through the laser fiber to ablate a second tissue zone in the target ablation region.
8 more elements
A laser fiber displacement device, comprising:
- a housing;
- a linear displacement member comprising:
- a linear slide coupled to the housing;
- a carriage slidingly coupled to the linear slide, wherein the carriage is configured to longitudinally move relative to the housing along the linear slide between a proximal position of the carriage and a distal position of the carriage;
- a clamp coupled to the carriage, the clamp comprising a slot extending into a side of the clamp, wherein the slot extends along a longitudinal length of the carriage, wherein the slot is configured to selectively receive a laser fiber, the laser fiber being configured for sliding movement within a cooling catheter;
- and
- a motor coupled to the carriage, wherein the motor is configured to longitudinally move the carriage between the proximal position of the carriage and the distal position of the carriage;
- and
- a sleeve configured to couple to the housing and comprising a lumen, the sleeve configured to selectively couple to the cooling catheter and receive the laser fiber through the lumen, wherein the sleeve is configured to resist longitudinal compression and maintain a position of the cooling catheter relative to the housing when the linear displacement member displaces the laser fiber relative to the cooling catheter through the lumen as the carriage longitudinally moves between the proximal position of the carriage and the distal position of the carriage.
6 more elements
Dependencies are inferred from the claim text.