Deflectable implantation device and method of use
First Claim
Patent Images
1. A medical device comprising:
- an elongated sleeve with a distal end and a proximal end wherein the sleeve is formed ofa rigid material;
a trocar slidable within the elongated sleeve, the trocar including a distal segment, at least a portion of the distal segment slideable beyond the distal end of the elongated sleeve;
wherein the trocar is solid and is formed of a shape memory material; and
the at least a portion of the distal segment of the trocar having a preformed shape trained into it such that is assumes the preformed shape upon being slid beyond the distal end of the elongated sleeve in the body.
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Abstract
Systems, apparatus, components and methods are disclosed that allow the clinician to circumvent the pubic arch in instances where it interferes with insertion of instrumentation into the prostate or periprostatic tissue. The systems, apparatus and components disclosed herein employ structures, such as needles and trocars, of shape memory alloys, such as nickel-titanium (Ni—Ti) for the purpose of avoiding the pubic arch when accessing the prostate from the perineum.
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Citations
14 Claims
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1. A medical device comprising:
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an elongated sleeve with a distal end and a proximal end wherein the sleeve is formed of a rigid material; a trocar slidable within the elongated sleeve, the trocar including a distal segment, at least a portion of the distal segment slideable beyond the distal end of the elongated sleeve; wherein the trocar is solid and is formed of a shape memory material; and the at least a portion of the distal segment of the trocar having a preformed shape trained into it such that is assumes the preformed shape upon being slid beyond the distal end of the elongated sleeve in the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for treating at least a portion of the prostate comprising:
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a) providing an apparatus comprising; an elongated sleeve with a distal end and a proximal end; a trocar slidable within the elongated sleeve, the trocar including a distal segment at a distal end of the trocar, at least a portion of the distal segment slideable beyond the distal end of the elongated sleeve; and the trocar being formed of a shape memory material, with a curved shape preformed into at least the distal portion; b) moving the apparatus to a sufficient depth within the prostate in a direction from the perineum to the prostate; c) extending at least a portion of the distal segment of the trocar beyond the distal end of the elongated sleeve to the desired site within the prostate, such that upon contact with the prostate tissue, the trocar returns to its preformed shape; d) removing the elongated sleeve from the body; e) moving a sheath over the trocar to a point proximate the distal end of the trocar; f) removing the trocar from the body; and g) guiding at least one treatment element through at least a portion of the sheath to the desired site within the prostate. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification