Method and apparatus for transurethral resection of the prostate
First Claim
1. A morcellation device for morcellating and removing targeted body tissue from within a patient, comprising:
- an elongated outer probe tube defining a first interior channel therein and having a first aperture formed adjacent to a closed distal end of said outer probe tube;
an elongated inner probe tube defining an aspiration channel therein and having a longitudinal axis and a second aperture formed adjacent to a distal end of said inner probe tube, said inner probe tube being slidably disposed inside said first interior channel, a proximate end of said inner probe tube being connectable to a vacuum source, said inner probe tube movable relative to said outer probe tube between a first position where said first and second apertures at least partially overlap each other, and a second position where said first and second apertures do not overlap each other;
a tissue manipulation port formed in one of said outer probe tube adjacent said first aperture and said inner probe tube adjacent said second aperture, such that said tissue manipulation port at least partially overlaps one of said first and second apertures when said inner probe tube is in said second position; and
said first aperture has a first cutting edge and said second aperture has a second cutting edge, said first and second cutting edges passing each other when said inner probe tube moves from said first position to said second position;
wherein during operation, aspiration caused by a vacuum in said aspiration channel from the vacuum source manipulates the targeted tissue to said first aperture and draws a portion of the targeted tissue into said first and second apertures when said inner probe tube is in said first position, and the portion of targeted tissue is cut by said first and second cutting edges passing each other when said inner probe tube moves from said first position to said second position, the cut portion of targeted tissue being drawn into and through said aspiration channel, the tissue manipulation port providing suction from the aspiration channel to hold the target tissue in position while said inner probe tube is in said second position.
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Accused Products
Abstract
A method and apparatus for transurethral resection of the prostate, which includes inserting a transurethral incisional device through the patient'"'"'s urethra, incising off at least one piece of targeted prostatic tissue using the incisional device, inserting a morcellation probe through the patient'"'"'s urethra, morcellating the excised piece of targeted prostatic tissue with the morcellation probe, and aspirating the morcellated prostatic tissue through the morcellation probe and out of the patient.
The morcellation probe of the present invention includes an elongated inner probe tube that defines an aspiration channel therein. The inner probe tube is slidably disposed inside an outer probe tube. The outer probe tube has a first aperture with a first cutting edge for cutting tissue. The inner probe tube has a second aperture or a spiral shaped groove defining a second cutting edge that moves relative to the first cutting edge to cut tissue drawn through the first aperture. The second aperture or groove are in communication with the aspiration channel. A tissue manipulation port can be formed in either the outer or inner probe tubes to overlap with the inner or outer probe tube apertures or the groove to provide continuous aspiration adjacent the first aperture if/when the first aperture is sealed by the inner probe tube.
207 Citations
47 Claims
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1. A morcellation device for morcellating and removing targeted body tissue from within a patient, comprising:
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an elongated outer probe tube defining a first interior channel therein and having a first aperture formed adjacent to a closed distal end of said outer probe tube; an elongated inner probe tube defining an aspiration channel therein and having a longitudinal axis and a second aperture formed adjacent to a distal end of said inner probe tube, said inner probe tube being slidably disposed inside said first interior channel, a proximate end of said inner probe tube being connectable to a vacuum source, said inner probe tube movable relative to said outer probe tube between a first position where said first and second apertures at least partially overlap each other, and a second position where said first and second apertures do not overlap each other; a tissue manipulation port formed in one of said outer probe tube adjacent said first aperture and said inner probe tube adjacent said second aperture, such that said tissue manipulation port at least partially overlaps one of said first and second apertures when said inner probe tube is in said second position; and said first aperture has a first cutting edge and said second aperture has a second cutting edge, said first and second cutting edges passing each other when said inner probe tube moves from said first position to said second position; wherein during operation, aspiration caused by a vacuum in said aspiration channel from the vacuum source manipulates the targeted tissue to said first aperture and draws a portion of the targeted tissue into said first and second apertures when said inner probe tube is in said first position, and the portion of targeted tissue is cut by said first and second cutting edges passing each other when said inner probe tube moves from said first position to said second position, the cut portion of targeted tissue being drawn into and through said aspiration channel, the tissue manipulation port providing suction from the aspiration channel to hold the target tissue in position while said inner probe tube is in said second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A morcellation device for morcellating and removing targeted body tissue from within a patient, comprising:
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an elongated outer probe tube defining a first interior channel therein and having a first aperture formed adjacent to a closed distal end of said outer probe tube, said first aperture having opposing first and second cutting edges; an elongated inner probe tube defining an aspiration channel therein and having a longitudinal axis and a second aperture formed adjacent to a distal end of said inner probe tube, said second aperture having opposing third and fourth cutting edges, said inner probe tube being slidably disposed inside said first interior channel, a proximate end of said inner probe tube being connectable to a vacuum source, said inner probe tube being movable relative to said outer probe tube between a first position, a second position, and a medial position which is between said first and second positions, said first and second apertures at least partially overlap each other when said inner probe tube is in said medial position, said first and second apertures not overlapping each other when said inner probe tube is in either of said first and second positions; a first tissue manipulation port, formed adjacent to one of said first and third cutting edges, that overlaps with one of said first and second apertures when said inner probe tube is in said first position; and a second tissue manipulation port, formed adjacent to one of said second and fourth cutting edges, that overlaps with one of said first and second apertures when said inner probe tube is in said second position; wherein during operation, aspiration caused by a vacuum in said aspiration channel from the vacuum source manipulates the targeted tissue to said first aperture and draws a portion of the targeted tissue into said first and second apertures when said inner probe tube is in said medial position, and the portion of targeted tissue is cut by said first and third cutting edges passing each other when inner tube moves from said medial position to said first position and by said second and fourth cutting edges passing each other when said inner tube moves from said medial position to said second position, the cut targeted tissue being drawn into and through said aspiration channel, said first and second tissue manipulation ports providing suction from the aspiration channel to hold the target tissue in position while said inner probe tube is in said first and second positions. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A morcellation device for morcellating and removing targeted body tissue from within a patient, comprising:
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an elongated outer probe tube defining a first interior channel therein and having a first aperture formed adjacent to a closed distal end of said outer probe tube; an elongated inner probe tube defining an aspiration channel therein and having a longitudinal axis and an outer surface, a spiral shaped groove is formed in said outer surface, an aspiration port in communication with said aspiration channel is formed in said groove, said inner probe tube being slidably disposed inside said first interior channel and rotatable about its longitudinal axis relative to said outer probe tube, a proximate end of said inner probe tube being connectable to a vacuum source; said first aperture has a first cutting edge and said groove defining a spiral shaped second cutting edge, said first and second cutting edges passing each other when said inner probe rotates relative to said outer probe tube; wherein during operation, aspiration caused by a vacuum in said aspiration channel from the vacuum source manipulates the targeted tissue to said first aperture and draws a portion of the targeted tissue into said first aperture and said groove, and the portion of targeted tissue is cut by said first and second cutting edges passing each other when said inner probe tube is rotated relative to said outer probe tube, the cut portion of targeted tissue being drawn along said groove, through said aspiration port and through said aspiration channel. - View Dependent Claims (35, 36, 37, 38, 39)
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40. A method for transurethral removal of targeted prostatic tissue from within a patient, comprising the steps of:
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inserting a transurethral incisional device through the patient'"'"'s urethra; incising off at least one piece of targeted prostatic tissue using the incisional device; inserting a morcellation probe through the patient'"'"'s urethra; morcellating the excised piece of targeted prostatic tissue with the morcellation probe; and aspirating the morcellated prostatic tissue through the morcellation probe and out of the patient. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47)
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Specification