Trocar and sheath assembly for placement of implantable device adjacent a body lumen

A method for implanting an implantable adjustable device to improve coaptation of the urethra at a target site for controllable coaptation of a patient's urethra, comprising:

• placing a small puncture in the perineum of the patient;
• passing a needle through the puncture, while optionally delivering anesthetic or analgesic during passage, to the target site under ultrasonic guidance;
• delivering a trocar and a U-shaped sheath assembly over or adjacent to the nee to the target site, while the needle is at the target site and removing the trocar and the needle, while leaving the sheath at the target site, wherein the U-shaped sheath has an interior space and is configured to fit over the outer circumference of the trocar;
• and
• delivering the implantable adjustable device via the interior space of the U-shaped sheath.

A method for implanting an implantable adjustable incontinence device to improve coaptation of the urethra at a target site for controllable coaptation of a patient's urethra, comprising:

• placing a small puncture in the perineum of the patient;
• passing a needle through the puncture, while optionally delivering anesthetic or analgesic during passage, to the target site under ultrasonic guidance;
• placing at a position a guidewire or stylet through or adjacent to the needle, while the needle is at the target site, withdrawing the needle, while leaving the guidewire or stylet at the position, delivering a trocar and a U-shaped sheath assembly over the guidewire or stylet to the target site, after the needle is withdrawn, and removing the trocar, while leaving the sheath at the target site, wherein the U-shaped sheath has an interior space and is configured to fit over the outer circumference of the trocar;
• and
• delivering the implantable adjustable device via the interior space of the U-shaped sheath.