ABX - Pulse Graft - PulseGraft



PROVISIONAL APPLICATION FOR PATENT

INVENTION TITLE

An electrically activated pulsating vascular stent graft for maintaining and accelerating pulsatile blood flow.

BACKGROUND OF THE INVENTION

Problem Solved: Other circulatory assist devices have impellers which damage red blood cells and often reduce pulsaltility of both blood flow and blood vessel wall movement. Other devices often have blood clots form within them thus blocking flow. External vessel systems cause damage to blood vessels, are inconsistent in performance and have to be placed surgically. Other devices migrate out of position or require suture sewing or hooks/barbs to be held in place or are too rigid to maintain vessel wall pulsaltility.

External devices damage the blood vessels and are inconsistent in performance and must be placed surgically. Other internal devices cause far more damage to blood cells and have higher risk of blood clotting and most often eliminate vessel wall or blood flow pulsaltility.

Our device is placed inside blood vessels not on the outside which eliminates most inconsistencies and can be placed without surgery. Our device does not have a turning impeller and thus has far less damage to blood cells in moving blood.

DETAILED DESCRIPTION OF THE INVENTION

As stated above, other circulatory assist devices have impellers which damage red blood cells and often reduce pulsaltility of both blood flow and blood vessel wall movement. Other devices often have blood clots form within them thus blocking flow. External vessel systems cause damage to blood vessels, are inconsistent in performance and have to be placed surgically. Other devices migrate out of position or require suture sewing or hooks/barbs to be held in place or are too rigid to maintain vessel wall pulsaltility. The invention claimed here solves this problem.

Device is placed without surgery and firmly affixes to vessel was with the right balance of radial force but not too high to eliminate pulsatile vessel wall movement. An electro activated band external to the covering of the stent graft is activated on demand to create pulsation waves and any chosen frequency. The device accelerates pulsatile blood flow with minimization of hemolysis and blood clot formation and without eliminating pulsatile vessel wall movement.

The claimed invention differs from what currently exists. Device assists circulatory flow with less hemolysis, less mechanical wear and less risk of blood clotting while maintaining both blood flow pulsaltility and vessel wall pulsaltility. May be placed without surgery and eliminates inconsistencies and risks involved in external to blood vessel systems.

This invention is an improvement on what currently exists. Device assists circulatory flow with less hemolysis, less mechanical wear and less risk of blood clotting while maintaining both blood flow pulsaltility and vessel wall pulsaltility. May be placed without surgery and eliminates inconsistencies and risks involved in external to blood vessel systems.

The external systems have to squeeze the blood vessels, like the aorta, that very greatly in stiffness and often have plaque formations which causes inconsistencies and risk. Other internal systems have impeller blades which damage blood cells.

Our device is placed inside blood vessels not on the outside which eliminates most inconsistencies and can be placed without surgery. Our device does not have a turning impeller and thus has far less damage to blood cells in moving blood.

Also, it can produce 1. Aorta circulatory assist pump.

2. Heart wrap heart assist.

3. Leg and foot circulatory flow improvement.

4. Improving blood flow into kidneys via renal artery placement.

5. Improving blood flow to eyes.

6. Improving blood flow to brain.

7. Improving blood vessel compliance to reduce high blood pressure.

8. Improving strength and breathing of airway tubes.

9. Reducing blood clots during hemodialysis.

10. Improving drug delivery including cancer therapies.

The Version of The Invention Discussed Here Includes:

1. S or Z stent

2. Compliant vascular graft material

3. Electro activated polymer band

4. External belt to deliver electro-magnetic energy to pulse electro activated band

5. Catheter delivery and removal system

Relationship Between The Components:

Item 1 S or Z stents provide the spring radial force at the top and the bottom of the vascular graft to hold it firmly in the blood vessel while not so firm to stop vessel wall pulsaltility movement, item 2 is a compliant graft material, such as ePTFE, that covers the stent and serves as an artificial blood vessel wall, item 3 is the electro activated polymer band or bands that are place on the external side of the item 2 compliant graft material. Item 4 is the external belt or other device worn that delivers wireless electro-magnetic energy on demand in pulses to cause the bands to pulsate at a chosen frequency, which can be timed with the ECG of the patient with delay built in. Item 5 is the plastic catheter delivery system that delivered the pulsating stent graft into place within the target blood vessel location and can also be used to remove the device if desired.

How The Invention Works:

The components work together to prove easy surgery free placement of a pulsating stent graft into an intended position with a blood vessel and when activated is able to provide circulatory assist support at a high level with minimization of the risks of hemolysis, blood clot formation and migration. The device may be activated with low power which minimizes risk of skin irritation to the patient. The device has minimal moving parts thus reducing risk of mechanical breakdown compared to other systems.

How To Make The Invention:

ePTFE or other compliant graft materials are available from a number of sources such as Gore, Impra and Atrium Medical. Nitinol stent wire for forming S or Z stents is available from multiple vendors. The wire may be formed into a spring like share easily with heating and forming sharing instruments. Nitinol based stent grafts have been in practice since the 1990's are known to all in the art as are their delivery systems. An electro-activated polymer may be sources from a number of suppliers an may be formed in a band shape and any desired width and length easily and placed over the compliant portion of the vascular graft. Electro-magnetic pulse activate belts can be assembled using known methods using coils to deliver electro-magnetic energy in a direction and location desired.

All elements describe are necessary for the invention to work.

How To Use The Invention:

The electro-active polymer band loaded stent graft is placed in a desired blood vessel and is used to augment blood flow providing circulatory assist support. This may be used in the aorta just above the renal arteries to help heart failure patients with excess body fluid to remove that fluid by accelerating pulsatile flow into the kidneys. It may be used in legs with low blood flow to avoid limb amputation. It may be used in hemodialysis patients to avoid blood clot formations in arterio-venous grafts and fistulas as well as central venous lines.

Additionally: It may be used in any application in any field where it is desired to move fluid particularly if pulsatility of flow is desired.

Also, it can create: 1. Aorta circulatory assist pump.

2. Heart wrap heart assist.

3. Leg and foot circulatory flow improvement.

4. Improving blood flow into kidneys via renal artery placement.

5. Improving blood flow to eyes.

6. Improving blood flow to brain.

7. Improving blood vessel compliance to reduce high blood pressure.

8. Improving strength and breathing of airway tubes.

9. Reducing blood clots during hemodialysis.

10. Improving drug delivery including cancer therapies.

ABSTRACT

An electrically activated pulsating vascular stent graft for maintaining and accelerating pulsatile blood flow is disclosed. Our device is placed inside blood vessels not on the outside which eliminates most inconsistencies and can be placed without surgery. Our device does not have a turning impeller and thus has far less damage to blood cells in moving blood.

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download