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 in a sidewall thereof adjacent to an open 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 in a sidewall thereof adjacent to a distal end of said inner probe tube, said inner probe tube is slidably disposed inside said first interior channel and movable in a reciprocating longitudinal direction parallel to said longitudinal axis and between a first position where said first and second apertures at least partially overlap each other and a second position where said second aperture is extended at least partially beyond the open distal end and out of said outer probe tube, a proximate end of said inner probe tube being connectable to a vacuum source; and
said first aperture having a first cutting edge and said second aperture having second and third opposing cutting edges, wherein said first and second cutting edges pass each other when said inner probe tube moves from said first position to said second position, and said third cutting edge and said open distal end passing each other when said inner probe tube moves from said second position to said first position;
wherein during operation;
a portion of the targeted tissue is drawn into said first and second apertures by aspiration caused by a vacuum in said aspiration channel from the vacuum source when said inner probe tube is in said first position, and 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, andanother portion of the targeted tissue is drawn into said second aperture by the vacuum when said inner probe tube is in said second position, and is cut by said third cutting edge and open distal end passing each other when said inner probe tube moves from said second position to said first position,the cut portions of targeted tissue being drawn into and through said aspiration channel.
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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 and an aperture with opposing cutting edges formed adjacent to its distal end. The inner probe tube is slidably disposed inside an outer probe tube, and moves relative thereto in a longitudinal reciprocating manner. The outer probe tube has an open distal end and another aperture with opposing cutting edges. During each reciprocating movement cycle, the apertures pass each other twice, and the inner probe tube aperture passes beyond the outer probe tube'"'"'s open distal end once, where two cutting actions occur between the apertures'"'"' cutting edges when they pass each other, and a third cutting action occurs when a cutting edge of the inner probe tube aperture passes the outer probe tube'"'"'s distal end. Target tissue that is cut by the cutting actions is then aspirated out of the patient'"'"'s body through the aspiration channel.
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Citations
29 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 in a sidewall thereof adjacent to an open 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 in a sidewall thereof adjacent to a distal end of said inner probe tube, said inner probe tube is slidably disposed inside said first interior channel and movable in a reciprocating longitudinal direction parallel to said longitudinal axis and between a first position where said first and second apertures at least partially overlap each other and a second position where said second aperture is extended at least partially beyond the open distal end and out of said outer probe tube, a proximate end of said inner probe tube being connectable to a vacuum source; and said first aperture having a first cutting edge and said second aperture having second and third opposing cutting edges, wherein said first and second cutting edges pass each other when said inner probe tube moves from said first position to said second position, and said third cutting edge and said open distal end passing each other when said inner probe tube moves from said second position to said first position; wherein during operation; a portion of the targeted tissue is drawn into said first and second apertures by aspiration caused by a vacuum in said aspiration channel from the vacuum source when said inner probe tube is in said first position, and 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, and another portion of the targeted tissue is drawn into said second aperture by the vacuum when said inner probe tube is in said second position, and is cut by said third cutting edge and open distal end passing each other when said inner probe tube moves from said second position to said first position, the cut portions of targeted tissue being drawn into and through said aspiration channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. 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 in a sidewall thereof adjacent to an open 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 in a sidewall thereof adjacent to a distal end of said inner probe tube, said second aperture having opposing third and fourth cutting edges, wherein; said inner probe tube is slidably disposed inside said first interior channel and movable relative to said outer probe tube in a reciprocating longitudinal direction parallel to said longitudinal axis between a proximal position and a distal position, said first and second apertures at least partially overlap each other when said inner probe tube is in a medial position that is in-between the proximal and distal positions, and do not overlap each other when said inner probe tube is in said proximal position, said second aperture is extended at least partially beyond the open distal end and out of said outer probe tube when said inner probe tube is in said distal position, and a proximate end of said inner probe tube is connectable to a vacuum source; wherein during operation; a portion of the targeted tissue is drawn into said first and second apertures by aspiration caused by a vacuum in said aspiration channel from the vacuum source when said inner probe tube is in said medial position, and is cut by said first and third cutting edges passing each other when said inner probe tube moves from said medial position to said distal position, another portion of the targeted tissue is drawn into said second aperture by the vacuum when said inner probe tube is in said distal position, and is cut by said fourth cutting edge and open distal end passing each other when said inner probe tube moves from said distal position toward said proximal position, and a further portion of the targeted tissue is drawn into said first and second apertures when said inner probe tube is in said medial position, and is cut by said second and fourth cutting edges passing each other when said inner probe tube moves from said medial position to said proximal position; the cut portions of targeted tissue being drawn into and through said aspiration channel. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. 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; wherein the morcellation probe comprises; an elongated outer probe tube defining a first interior channel therein and having a first aperture formed in a sidewall thereof adjacent to an open 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 in a sidewall thereof adjacent to a distal end of said inner probe tube, said second aperture having opposing third and fourth cutting edges, wherein; said inner probe tube is slidably disposed inside said first interior channel and movable relative to said outer probe tube in a reciprocating longitudinal direction parallel to said longitudinal axis between a proximal position and a distal position, said first and second apertures at least partially overlap each other when said inner probe tube is in said medial position and do not overlap each other when said inner probe tube is in said proximal position, said second aperture is extended at least partially beyond the open distal end and out of said outer probe tube when said inner probe tube is in said distal position, and a proximate end of said inner probe tube is connectable to a vacuum source; wherein during operation; a portion of the excised piece of targeted prostatic tissue is drawn into said first and second apertures by aspiration caused by a vacuum in said aspiration channel from the vacuum source when said inner probe tube is in said medial position, and is cut by said first and third cutting edges passing each other when said inner probe tube moves from said medial position to said distal position, another portion of the excised piece of targeted prostatic tissue is drawn into said second aperture by the vacuum when said inner probe tube is in said distal position, and is cut by said fourth cutting edge and open distal end passing each other when said inner probe tube moves from said distal position toward said proximal position, and a further portion of the excised piece of targeted prostatic tissue is drawn into said first and second apertures when said inner probe tube is in said medial position, and is cut by said second and fourth cutting edges passing each other when said inner probe tube moves from said medial position to said proximal position; the cut portions of targeted prostatic tissue being drawn into and through said aspiration channel. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification