Coring device and method
First Claim
Patent Images
1. A coring device comprising:
- a housing defining a longitudinal axis;
a coring member mounted in said housing;
an advancing assembly mounted for engagement with said coring member to effect longitudinal motion thereof;
a drive assembly connected to said advancing assembly for activating said advancing assembly to move the coring member longitudinally at a predetermined rate to core body tissue; and
an electrical element connected to said coring member to provide cauterizing current to body tissue.
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Abstract
A coring device for coring body tissue to define reproducible patent channels in the body tissue is provided. The coring device utilizes a coring member that is rotatable and linearly advanceable at coordinated predetermined rates to core body tissue. The device can include a suction assembly suitable for use during biopsy procedures and a cautery assembly to cauterize the cored body tissue. The coring member can also be oscillated along its longitudinal axis to effect cauterization and/or coring. The coring device is particularly suited for Transmyocardial Revascularization (TMR).
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Citations
37 Claims
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1. A coring device comprising:
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a housing defining a longitudinal axis; a coring member mounted in said housing; an advancing assembly mounted for engagement with said coring member to effect longitudinal motion thereof; a drive assembly connected to said advancing assembly for activating said advancing assembly to move the coring member longitudinally at a predetermined rate to core body tissue; and an electrical element connected to said coring member to provide cauterizing current to body tissue. - View Dependent Claims (2, 3, 4)
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5. A coring device comprising:
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a coring member; a rotation assembly operably connected to the coring member; an advancing assembly operably connected to the coring member; a drive assembly operably connected to the rotation assembly and advancing assembly, the drive assembly being operable to activate the rotation and advancing assembly to rotate and advance the coring member at predetermined coordinated rates to effect coring of body tissue; and a control module, the control module including the drive assembly and being programmable to coordinate the rates of advancement and rotation of the coring member. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A coring device comprising:
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a coring member; a longitudinal oscillatory assembly operably connected to the coring member; an advancing assembly operably connected to the coring member; and a drive assembly operably connected to the oscillatory assembly and the advancing assembly, the drive assembly being operable to advance the coring member at predetermined coordinated rates to effect coring of body tissue while controlling the degree of tearing of the body tissue, wherein the drive assembly includes an electric motor and a harmonic generator, the electric motor being operably connected to the advancing assembly and the harmonic generator being operably connected to the oscillatory assembly.
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14. A coring device comprising:
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a coring member; a rotation assembly operably connected to the coring member; an advancing assembly operably connected to the coring member; and a drive assembly operably connected to the rotation assembly and to the advancing assembly, the drive assembly being operable to activate the rotation and advancing assemblies to rotate and advance the coring member at predetermined coordinated rates to effect coring of body tissue, wherein during advancement of the coring member, the coring member is rotated at least one revolution.
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15. A coring device comprising:
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a coring member; a longitudinal oscillatory assembly operably connected to the coring member; an advancing assembly operably connected to the coring member; and a drive assembly operably connected to the oscillatory assembly and the advancing assembly, the drive assembly being operable to simultaneously advance and oscillate the coring member at predetermined coordinated rates to effect coring of body tissue while controlling the degree of tearing of the body tissue.
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16. A method of coring body tissue comprising the steps of:
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(a) providing a coring device having a linearly advanceable, rotatable coring member; (b) positioning the coring device adjacent to the body tissue to be cored; (c) simultaneously advancing and rotating the coring member at predetermined coordinated rates to core the body tissue; and (d) cauterizing the cored body tissue. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of coring body tissue comprising the steps of:
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(a) providing a coring device having a linearly advanceable coring member; (b) positioning the coring member adjacent body tissue; (c) advancing the coring member into the body tissue at a controlled, constant rate; and (d) withdrawing a portion of the body tissue through at least a portion of the coring member. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A method of performing transmyocardial revascularization comprising the steps of:
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(a) providing a coring device having a linearly advanceable coring member; (b) positioning the coring member adjacent heart tissue; (c) advancing the coring member into the heart tissue at a controlled, constant rate.
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33. A method of coring body tissue comprising the steps of:
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(a) providing a coring device having a linearly advanceable coring member; (b) providing a device for delivering a ultrasonic energy to the coring member; (c) positioning the coring member adjacent body tissue; (d) advancing the coring member into the body tissue; and (e) delivering ultrasonic energy to the coring member at a time when the coring member is in contact with the body tissue.
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34. A method of coring body tissue comprising the steps of:
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(a) providing a coring member having `n` serrations at an end thereof, each serration have a tooth depth `t`; (b) rotating the coring member at a rate `r`; and (c) linearly advancing the coring member at a rate less than or equal to the product of `n`, `t` and `r`. - View Dependent Claims (35, 36)
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37. A method of coring body tissue comprising the steps of:
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(a) providing a coring device having linearly advanceable, rotatable coring member; (b) positioning the coring device adjacent to the body tissue to be cored; and (c) simultaneously advancing and rotating the coring member at predetermined coordinated rates to core the body tissue, wherein during continuous advancement of the coring member, the coring member is rotated at least one revolution.
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Specification