Heart help device, system, and method

Patent metadata

Field	Value
Publication number	US-2017021073-A1
Application number	US-201615284582-A
Country	US
Kind code	A1
Filing date	Oct 4, 2016
Priority date	Oct 10, 2008
Publication date	Jan 26, 2017
Grant date	—

Abstract

An implantable device for improving the pump function of the heart of a human patient by applying an external force on the heart muscle is provided. The device comprises at least one pump device having a pump. The pump comprising: a piston adapted for reciprocating movement, an operating device for operating the piston, a heart contacting organ. The movement of the piston assists the pump function of the heart through said heart contacting organ.

First claim

1 . An implantable device for improving the pump function of the heart of a human patient by applying an external force on the heart muscle, said device comprising at least one pump device adapted to assist in the pump function of the heart comprising:
a piston adapted for reciprocating movement, an operating device for operating the piston, a heart contacting organ, wherein the movement of the piston direct or indirect is transported to said heart contacting organ to assist the pump function of the heart.

2 . The implantable device according to claim 1 , wherein said piston is adapted to be operated by pressurized fluid in two reciprocal directions.

3 . The implantable device according to claim 2 , further comprising a pressurized fluid system.

4 . The implantable device according to claim 3 , wherein said pressurized fluid system further comprises a valve.

5 . The implantable device according to claim 4 , wherein said pressurized fluid system further comprises a first chamber adapted to hold a pressurized fluid.

6 . The implantable device according to claim 5 , wherein said pressurized fluid system further comprises a second chamber, wherein said first chamber is adapted to hold a fluid having a high pressure, and wherein said second chamber is adapted to hold a fluid having a low pressure, and wherein said piston is adapted to use said first chamber for moving said piston in two reciprocal directions with high pressure fluid, and wherein said piston is further adapted to use said second chamber for lowering the pressure on one opposite alternating side of said piston, and wherein said valve system is adapted to direct fluid between a) said piston, on different sides thereof depending on the piston position or piston direction, and b) said first chamber and said second chamber to allow reciprocal and iterative movement of said piston.

7 . The implantable device according to claim 6 , wherein said second lower pressure chamber is adapted to empty the high pressurized side of the piston, after a piston away movement has occurred, adapted to allow the reciprocal movement with new high pressure fluid arriving at the opposite side of the piston.

8 . The valve according to claim 7 , adapted to intermittently connect said second lower pressure chamber to the side of the piston intended to receive the piston in the next piston movement step.

9 . The implantable device according to claim 8 , wherein said first higher pressure chamber is adapted to fill one side of the piston with high pressurized fluid, and after a piston away movement has occurred, being adapted to allow the reciprocal movement with a new high pressurized fluid arriving at the opposite side of the piston.

10 . The valve according to claim 9 , adapted to intermittently connect said first higher pressure chamber to the side of the piston intended to transmit the piston away in the next piston movement step.

11 . The implantable device according to claim 6 - 10 , comprising a pump adapted to comprise a non return valve and be connected between the first and second chamber, wherein said second lower pressure chamber is adapted to be periodically be emptied into the first high pressure chamber, adapted to allow continuous movement of said piston.

12 . The implantable device according to claim 6 - 10 , comprising a volume refilling device to refill fluid leaking from the system.

13 . The implantable device according to claim 1 , wherein said implantable device comprises a second pump device.

14 . The implantable device according to claim 1 , wherein said operating device comprises an eccentrically rotating member adapted to affect said piston.

15 . The implantable device according to claim 1 , wherein said piston is arranged in a sleeve.

16 . The implantable device according to claim 15 , wherein said sleeve and said piston confines a sealed chamber.

17 . The implantable device according to claim 16 , wherein said implantable device further comprises an operating device, at least partly placed inside of said sealed chamber.

18 . The implantable device according to claim 1 , wherein said piston comprises ceramic material.

19 . The implantable device according to claim 15 , wherein said sleeve comprises ceramic material.

20 . The implantable device according to claim 15 , wherein said piston and said sleeve is in contact with each other in use, in a contacting surface, and wherein said contacting surface comprises ceramic material.

21 . The implantable device according to claim 1 , wherein a portion of said operating device comprises ceramic material.

22 . The implantable device according to claim 21 , wherein said operating device and said piston is adapted to be in contact with each other in use, in a contacting surface, and wherein said contacting surface comprises ceramic material.

23 . The implantable device according to claim 13 , wherein said first and second pump device are adapted to operate on the anterior and posterior side of the heart of a human patient, respectively.

24 . The implantable device according to claim 16 , wherein said sealed chamber is adapted to receive a pressurized fluid for operating said piston.

25 . The implantable device according to claim 1 , wherein said piston comprises said heart contacting organ.

26 . The implantable device according to claim 1 , wherein said heart contacting organ comprises arms adapted to connect said heart contacting organ with said piston.
Drive

27 . The implantable device according to claim 1 , wherein said pump device is adapted to be operated by pressurized fluid in a first direction and by vacuum in a second direction.

28 . The implantable device according to claim 1 , wherein said operating device comprises a magnetic motor.

29 . The implantable device according to claim 28 , wherein said magnetic motor is operated by successive energizing of coils in connection with magnets.

30 . The implantable device according to claim 14 , wherein said eccentrically rotating member comprises a magnetic motor comprising coils and magnets, and wherein said magnetic motor is adapted to be operated by successive energizing said coils.

31 . The implantable device according to claim 1 , wherein said pump device is operated using a solenoid.

32 . The implantable device according to claim 1 , wherein said pump device is operated using a motor.

33 . The implantable device according to claim 32 , wherein said motor is a motor selected from the group consisting of: electric motor, hydraulic motor, pneumatic motor and servo motor.

34 . The implantable device according to claim 1 , wherein said implantable device further comprises an implantable control unit.

35 . The implantable device according to claim 34 , wherein said implantable control unit is adapted to be controlled from outside of the human body.
Fixation

36 . The implantable device according to claim 1 , wherein said implantable device further comprises a fixation member adapted to fixate said device to the sternum of the patient.

37 . The implantable device according to claim 1 , wherein said implantable device further comprises a fixation member adapted to f

Assignees

• Forsell Peter

Inventors

• Forsell Peter

Classifications

• A61M1/04

  {Artificial} pneumothorax apparatus · CPC title

• A61M2205/3303

  Using a biosensor · CPC title

• A61M2230/04

  Heartbeat characteristics, e.g. ECG, blood pressure modulation · CPC title

• A61M2205/32

  with radio-opaque indicia · CPC title

• A61M2205/8243

  by induction · CPC title