Multiple configuration surgical cutting device
Inventors
Carver, Robert • LEE, Weston H. • KAGARISE, Brian E. • HOO, Bruce A. • Grace, Kenneth P. • HALBERT, Phillip Charles • GLEASON, Peter Wilbur
Assignees
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Publication Number
US-12053203-B2
Publication Date
2024-08-06
Expiration Date
Abstract
Devices for removing implanted objects from body vessels are provided. A device includes a sheath assembly having a cutting tip. The cutting tip includes a cutting surface that is adapted to cut tissue coupled to an implanted object as the cutting tip rotates. The sheath assembly further includes an outer shield carried outside of the cutting tip. The outer shield includes a distal opening, and the outer shield is translatable relative to the cutting tip from a first position to a second position and vice versa. In the first position the cutting surface of the cutting tip is disposed within the outer shield, and in the second position the cutting tip extends through the distal opening and the cutting surface is at least partially disposed outside of the outer shield.
Core Innovation
The invention relates to a multiple configuration surgical cutting device for removing an implanted object. The device includes an intermediate sheath assembly with an intermediate sheath and an intermediate tip disposed at a distal end, and an inner sheath assembly with an inner sheath and a cutting tip configured to separate tissue by rotation relative to the intermediate sheath. The inner sheath assembly is transported inside the intermediate sheath assembly.
The device further includes an outer sheath assembly with an outer sheath and an outer shield disposed at a distal end. The outer sheath assembly is configured to translate relative to the intermediate sheath assembly between a first position and a second position while being transported outside the intermediate sheath assembly, such that in the first position a distal end of the inner sheath assembly is disposed inside the distal end of the outer shield and in the second position the distal end of the inner sheath assembly is disposed outside the distal end of the outer shield.
A shield drive mechanism is coupled to the outer sheath assembly and configured to cause the outer sheath to translate between the first position and the second position. The shield positions correspond to a shielded configuration and an extended configuration, in which the cutting surface is disposed within the outer shield in the shielded configuration and protrudes through a distal opening in the extended configuration.
Claims Coverage
The independent claim covers a device for removing an implanted object using a nested sheath system with an inner cutting tip that separates tissue by rotation and an outer shield that translates between a first position and a second position. The claim includes 3 main inventive aspects.
Nested intermediate and inner sheath cutting arrangement
An intermediate sheath assembly comprising an intermediate sheath and an intermediate tip disposed at a distal end of the intermediate sheath assembly; an inner sheath assembly comprising an inner sheath and a cutting tip configured to separate tissue by rotation relative to the intermediate sheath to remove the implanted object, the inner sheath assembly configured to be transported inside the intermediate sheath assembly.
Outer sheath assembly translating between two shield positions
An outer sheath assembly comprising an outer sheath and an outer shield disposed at a distal end of the outer sheath assembly, the outer sheath assembly configured to translate relative to the intermediate sheath assembly between a first position and a second position, the outer sheath assembly configured to be transported outside the intermediate sheath assembly; wherein, in the first position, a distal end of the inner sheath assembly is disposed inside the distal end of the outer shield, and wherein, in the second position, the distal end of the inner sheath assembly is disposed outside the distal end of the outer shield.
Shield drive mechanism coupled to the outer sheath assembly
A shield drive mechanism coupled to the outer sheath assembly, the shield drive mechanism configured to cause the outer sheath to translate in relation to the intermediate sheath from the first position to the second position and from the second position to the first position.
Overall, the claim coverage centers on the combination of a nested intermediate and inner cutting system, an outer shield that translates between two positions that dispose the inner cutting region inside or outside the outer shield distal end, and a shield drive mechanism that causes the outer shield translation relative to the intermediate sheath.
Stated Advantages
Documented Applications
No documented applications found
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