Systems and methods for implants and deployment devices
Benign prosthetic hyperplasia (BPH) is a non-cancerous enlargement of the prostate gland. Treatment options for BPH include medication, surgery (e.g., removal of enlarged prostate tissue), and minimally invasive procedures (e.g., needle ablation, electrovaporization, thermotherapy, and stent insertion). Minimally invasive procedure is typically the preferred choice if medication is ineffective. Accordingly, disclosed herein are system and method for treating BPH using improved implant and delivery device. Certain embodiments of the delivery device can include: a camming barrel having a first groove at the distal end of the camming barrel; a sheath, located within a lumen of the camming barrel, for storing the implantable device; and a first cam follower coupled to the sheath.
1. A method for deploying an implantable device with a delivery device comprising a sheath, the method comprising:
inserting the sheath containing the implantable device into a patient's body, wherein the sheath is coupled along a longitudinal axis of the delivery device;
rotating a cam of the delivery device such that the sheath is retracted as the cam is being rotated and the implantable device is exposed from the sheath, wherein rotating the cam comprises rotating a camming barrel having a first groove at a distal end of the camming barrel, wherein rotating the camming barrel causes a first cam follower coupled to the sheath to travel along the first groove and to translate the sheath, wherein the translation of the sheath causes the sheath to retract into the camming barrel; and
retracting a handle to disengage a locking mechanism, thereby permitting further rotation of the camming barrel.
2. The method of claim 1 , wherein rotating the camming barrel further comprises a second groove disposed on the camming barrel, coupled with a second cam follower to force the second cam follower to axially move toward a distal end of the camming barrel, wherein the second cam follower is coupled to a shaft and wherein the axial movement of the second cam follower causes the shaft to move in a distal direction.
3. The method of claim 2 , wherein the first and second groove each comprises a plurality of helical and radial slots.
4. The method of claim 3 , wherein rotating the camming barrel causes the first cam follower to move in a radial slot of the first groove and concurrently causes the second cam follower to move in a helical slot of the second groove.
5. The method of claim 3 , wherein rotating the camming barrel causes the first cam follower to move in a helical slot of the first groove and concurrently causes the second cam follower to move in a radial slot of the second groove.
6. A method for deploying an implantable device with a delivery device comprising a sheath, the method comprising:
inserting the sheath containing the implantable device into a patient's urethra, wherein the implantable device is coupled to a shaft along a longitudinal axis of the delivery device;
rotating a cam of the delivery device such that the shaft is translated as the cam is being rotated, wherein rotating the cam of the delivery device comprises rotating a camming barrel having a first groove at a proximal end of the camming barrel, wherein rotating the camming barrel causes a first cam follower coupled to the shaft to travel along the first groove and to axially translate the shaft in a distal direction; and
retracting a handle to disengage a locking mechanism, thereby permitting further rotation of the camming barrel,
wherein the translation of the shaft pushes the implantable device out of the sheath and into a position for maintaining the urethra in an open state.
7. The method of claim 6 , wherein the camming barrel further comprises a second groove coupled with a second cam follower, the method further comprising rotating the camming barrel to force the second cam follower to axially move toward a proximal end of the camming barrel, wherein the second cam follower is coupled to the sheath and wherein the axial movement of the second cam follower causes the sheath to move in a proximal direction.