Intracardiac pumping device

Patent metadata

Field	Value
Publication number	US-2018207334-A1
Application number	US-201815876346-A
Country	US
Kind code	A1
Filing date	Jan 22, 2018
Priority date	Aug 8, 2003
Publication date	Jul 26, 2018
Grant date	—

Abstract

The invention relates to an intercardiac pump device comprising a pump ( 11 ) whose distal end ( 13 ) is connected to a cannula ( 15 ) which is provided with a suction head ( 16 ) for sucking blood. Said strainer is provided with a non-sucking extension ( 20 ) for stabilising the position of said pump device in the heart and mechanically prolonging the cannula ( 15 ) without deteriorating hydraulic conditions. Said extension is also used in the form of a spacer in order to avoid that the suction head ( 16 ) adheres to a cardiac wall.

First claim

1 - 9 . (canceled)

10 . An intracardiac pumping device for percutaneous insertion comprising:
a pump configured to be positioned within the vasculature of a patient, the pump comprising:
a motor, and
a pump housing and impeller positioned distal of the motor and mechanically coupled to the motor;
a cannula positioned distal of the pump housing, the cannula comprising a distal suction head having inlet openings; a catheter having a distal end that operably extends to the motor and permits an electrical lead to pass into contact with the motor so that the impeller is rotatably driven by the motor, and a proximal end configured to extend the electrical lead to a controller located outside the patient; and a flexible atraumatic projection extending distally from a distal end of the suction head.

11 . The pumping device of claim 10 , wherein the catheter is configured so it can bend to extend over an aortic arch.

12 . The pumping device of claim 10 , wherein the controller is configured to operate the impeller to pump blood at a rate of 2 to 3 liters per minute.

13 . The pumping device of claim 10 , wherein the cannula is configured to extend across an aortic valve in a heart.

14 . The pumping device of claim 13 , wherein the inlet openings of the suction head are configured to be positioned in a left ventricle of the heart.

15 . The pumping device of claim 14 , wherein during systole the pump is configured to change position within the heart with respect to a position during diastole.

16 . The pumping device of claim 15 , wherein the flexible atraumatic projection is configured to space the pump from a wall of the heart.

17 . The pumping device of claim 16 , wherein the flexible atraumatic projection is configured as a pigtail.

18 . The pumping device of claim 17 , further comprising blood outlets positioned proximal of the impeller.

19 . The pumping device of claim 18 , wherein the blood outlets are distal of the motor part.

20 . The pumping device of claim 19 , wherein the blood outlets are formed in the pump housing.

21 . The pumping device of claim 20 , wherein the impeller is configured to pull the blood into the cannula through the blood inlets and out the blood outlets.

22 . The pumping device of claim 21 , wherein the impeller is configured to deflect the blood out through the blood outlets, wherein the blood exits the pump with a radial component.

23 . The pumping device of claim 22 , wherein the outlet openings are configured to be positioned in the aorta.

24 . The pumping device of claim 10 , wherein a cross-sectional area of the inlet openings is the same as a cross-sectional area of the cannula.

25 . The pumping device of claim 24 , wherein the cannula is formed from a metal coil having a polymer coating.

26 . The pumping device of claim 25 , wherein the polymer coating is a polyurethane coating.

27 . The pumping device of claim 26 , wherein the cannula has a length of less than 70 mm.

28 . The pumping device of claim 27 , wherein the cannula is configured to be flexible.

29 . The pumping device of claim 10 , wherein the pump housing has an outer diameter of 4 mm.

Assignees

• Abiomed Europe Gmbh

Inventors

• Siess Thorsten

Classifications

• A61M25/0041

  pre-formed, e.g. specially adapted to fit with the anatomy of body channels (urethral catheters A61F2/04) · CPC title

• A61M25/0069

  Tip not integral with tube · CPC title

• A61M60/205

  Non-positive displacement blood pumps · CPC title

• A61M60/17

  inside a ventricle, e.g. intraventricular balloon pumps · CPC title

• A61M60/135

  inside a blood vessel, e.g. using grafting · CPC title