Methods, systems and devices for treating hypertension
Provided is a method of treating arterial hypertension in a patient. The method comprises selecting a patient suffering from arterial hypertension and creating a flow pathway between a first vascular location and a second vascular location. The first vascular location comprises a source of arterial blood and the second vascular location comprises a source of venous blood. The method causes a reduction in diastolic pressure and a reduction in systolic pressure; and the reduction in diastolic pressure is to an extent at least approximating the reduction in systolic pressure. Systems and devices for creating a flow pathway are also provided.
1. A system for treating hypertension in a patient, comprising:
a needle delivery device constructed and arranged to place a vessel-to-vessel guidewire from a starting vessel to a target vessel;
a flow creation device constructed and arranged to be advanced over the vessel-to-vessel guidewire and to create a flow pathway between the starting vessel and the target vessel;
wherein the system is constructed and arranged to cause a reduction in diastolic pressure,
wherein the flow creation device comprises a clip deployment catheter comprising an inner shaft, an anastomotic clip positioned over the inner shaft, a distal tip coupled to the inner shaft, and an outer sheath covering the anastomotic clip when ready to deploy, the anastomotic clip comprising at least one distal arm and at least one proximal arm,
wherein the clip deployment catheter comprises a handle and the handle comprises a control constructed and arranged to be moved by an operator to retract the outer sheath to allow the anastomotic clip to deploy,
wherein the handle is constructed and arranged to allow an operator to move the control from a first ready to deploy position to a first deployed position to cause the outer sheath to retract a first distance relative to the distal tip to allow the at least one distal arm to deploy while the clip is held stationary relative to the distal tip,
wherein the handle is further constructed and arranged to allow the operator to move the control from the first deployed position to a second ready to deploy position, and
wherein the handle is further constructed and arranged to allow the operator to move the control from the second ready to deploy position to a second deployed position to cause the outer sheath to retract a second distance relative to the distal tip to allow the at least one proximal arm to be deployed while the clip is held stationary relative to the distal tip.
2. The system of claim 1 wherein the control comprises a button.
3. The system of claim 1 wherein the handle comprises a safety position for the control.
4. The system of claim 3 wherein the handle comprises a longitudinal axis and wherein the control is constructed and arranged to be moved relatively perpendicular to said longitudinal axis to transition from the safety position to the first ready to deploy position.
5. The system of claim 1 wherein the clip comprises at least two distal arms.
6. The system of claim 1 wherein the handle comprises a longitudinal axis and wherein the control is moved relatively parallel to said longitudinal axis to transition from the first ready to deploy position to the first deployed position.
7. The system of claim 6 wherein the control is moved relatively perpendicular to the longitudinal axis to transition from the first deployed position to the second ready to deploy position.
8. The system of claim 1 wherein the clip comprises at least two proximal arms.
9. The system of claim 6 wherein the control is moved relatively parallel to said longitudinal axis to transition from the second ready to deploy position to the second deployed position.
10. The system of claim 1 wherein the clip deployment catheter is constructed and arranged such that movement of the control to the second position causes a tactile feedback event to occur.
11. The system of claim 1 further comprising a venous system introducer, wherein the venous system introducer comprises a distal portion and an expandable element mounted to the distal portion.
12. The system of claim 11 wherein the expandable element is constructed and arranged to prevent inadvertent advancement of the introducer into the target vessel.