IMPLANTABLE MEDICAL DEVICE AND SYSTEM TO HEAT TISSUE

• US 20180161039A1
• Filed: 06/12/2016
• Published: 06/14/2018
• Est. Priority Date: 06/19/2015
• Status: Active Application

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Harks, Godefridus Antonius
• Application Number:
  US15/575,514
• Publication Number:
  US 20180161039A1
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12177 comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 18/22 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
• CPC Class Codes: A61B 18/28 for heating a thermal probe or absorber
• CPC Class Codes: A61B 2017/00044 Sensing electrocardiography, i.e. ECG
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00597 Implements comprising a membrane
• CPC Class Codes: A61B 2017/0061 Implements located only on one side of the opening
• CPC Class Codes: A61B 2017/00623 : Introducing or retrieving devices therefor
• CPC Class Codes: A61B 2017/00632 : Occluding a cavity, i.e. closing a blind opening
• CPC Class Codes: A61B 2017/00867 : shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/00893 : pharmaceutically effective
• CPC Class Codes: A61B 2017/1205 : Introduction devices
• CPC Class Codes: A61B 2018/00214 : Expandable means emitting energy, e.g. by elements carried thereon
• CPC Class Codes: A61B 2018/0022 : Balloons
• CPC Class Codes: A61B 2018/00267 : having a basket shaped structure
• CPC Class Codes: A61B 2018/00351 : Heart
• CPC Class Codes: A61B 2018/00375 : Ostium, e.g. ostium of pulmonary vein or artery
• CPC Class Codes: A61B 2018/00577 : Ablation
• CPC Class Codes: A61B 2018/00791 : Temperature
• CPC Class Codes: A61B 2018/00839 : Bioelectrical parameters, e.g. ECG, EEG
• CPC Class Codes: A61B 2018/1495 : Electrodes being detachable from a support structure
• CPC Class Codes: A61F 2/01 : Filters implantable into blood vessels

Abstract

A medical implant device (18) for atrial appendage (20) is presented, suitable to transmit energy to its surrounding. The medical implant device (18) comprising an expandable structure (31,34) and a cover (32) disposed on the expandable structure is adapted to extend across the ostium (21) of the atrial appendage (20) for restricting migration of thrombi from the appendage to the blood stream in the heart (13). The expandable structure (31,34) of the medical implant device (18) configured to receive energy from an external energy source (11) is further configured to transmit energy to its surrounding for altering the electrical activation pathways in heart by heating the tissue adjacent to the medical implant device (18).

Claims

1. A medical implant device releasably attachable to a catheter, comprising:

an expandable structure,

a cover disposed on the expandable structure, adapted to extend across an ostium of an atrial appendage of a heart,

wherein the expandable structure is configured to receive energy from an external energy source and is further configured to transmit energy to its surrounding such as to heat heart tissue in its surrounding to change an electrical property of the heart tissue from electrically conductive to electrically isolating when the expandable structure is in an expanded state that causes permanent occlusion of the atrial appendage by the medical implant device.

2. The medical implant device according to claim 1, wherein the expandable structure is made of shape memory alloy.

3. The medical implant device according to claim 1, wherein the expandable structure is configured to transfer the received energy into transmitted energy of a different form.

4. The medical implant device according to claim 1, wherein the expandable structure is arranged to receive the energy in the form of electric energy by means of a radiofrequency current provided to the expandable structure.

5. The medical implant device according to claim 1, wherein the expandable structure is arranged to receive the energy in the form of laser radiation.

6. The medical implant device according to claim 3, wherein the expandable structure is arranged to receive electric energy by means of an electric current provided to the expandable structure, and further arranged to transform it into heat transmitted to its surroundings.

7. The medical implant device according to claim 3, the expandable structure arranged to receive electric energy by means of electromagnetic waves, and further arranged to transform it into heat transmitted to its surrounding.

8. The medical implant device according to claim 3, the expandable structure arranged to receive energy by means of mechanical waves in the form of pressure waves, and further arranged to transform it into heat transmitted to its surrounding.

9. The medical implant device according to claim 1, wherein the cover is a balloon that is inflatable with fluid.

10. The medical implant device according to claim 1, wherein the expandable structure comprises measurement sensors.

11. The medical implant device according to claim 1, configured to transmit energy to the surrounding around its circumference along a spatially continuous contour.

12. A system comprising the medical implant device according to claim 1 and an external energy source for providing the energy to be received by the expandable structure.

13. The system according to claim 12, further comprising a catheter for connecting the medical implant device to the external energy source.

14. A method of heating heart tissue with the medical implant device according to claim 1, the method comprising:

introducing the medical implant device into the heart with a catheter,

deploying the medical implant device in the atrial appendage of the heart,

the medical implant device receiving energy from an external energy source,

the medical implant device transmitting energy to the heart tissue such as to heat the heart tissue in its surrounding to change an electrical property of the heart tissue from electrically conductive to electrically isolating when the expandable structure is in expanded state that causes permanent occlusion of the atrial appendage by the deployed medical implant device.

15. The method according to claim 14, the method further comprising:

measuring temperature and/or electrical signals of the heart tissue adjacent to sensors integrated into the medical implant device,

controlling an amount of energy transmitted from the external energy source to the medical implant device and/or an activation sequence of segments of the expandable structure around the circumference of the medical implant device by a controller computer, based on the measured temperature and/or electrical signals.