Blood clot removal device, system, and method

Patent metadata

Field	Value
Publication number	US-9457172-B2
Application number	US-86472409-A
Country	US
Kind code	B2
Filing date	Jan 28, 2009
Priority date	Jan 28, 2008
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

A blood clot removal device for removing blood clots from the vascular system of a patient is implantable in the patient's body. The blood clot removal device comprises a blood flow passageway to be connected to the patient's vascular system to allow circulation of the patient's blood through the blood flow passageway, a filter provided in the blood flow passageway for collecting blood clots occurring in the blood flowing through the blood flow passageway, and a cleaning device for moving blood clots collected by the filter out of the blood flow passageway. By means of such blood clot removal device, the risk of blood clots reaching sensitive areas of the patient's body, such as the brain, is reduced.

First claim

The invention claimed is:

1. A blood clot removal device for removing blood clots from the vascular system of a patient, the blood clot removal device being implantable in the patient's body and comprising:
a blood flow passageway to be connected to the patient's vascular system to allow circulation of the patient's main blood through the blood flow passageway, thus through which the blood of the patient passes when the blood flow passageway is implanted in the patient,
a filter provided in the blood flow passageway for collecting blood clots occurring in the blood flowing through the blood flow passageway, and
a cleaning device for moving blood clots collected by the filter out of the blood flow passageway, post-operatively and non-invasively,

further comprising at least one fresh filter, wherein the cleaning device is adapted to replace the first-mentioned filter in the blood flow passageway together with collected blood clots with the fresh filter.

2. The device according to claim 1 , wherein the cleaning device is adapted to move blood clots in at least one of a collecting volume adapted to collect blood clots that have been cleaned from the filter, and a place free inside the patient body, wherein the cleaning device is adapted to take into account a fibrotic capsula covering the cleaning device when implanted.

3. The device according to claim 2 , wherein the collecting volume comprises a bag.

4. The device according to claim 1 , wherein the cleaning device is adapted to at least one of;
slice, push or scratch away any clots from the filter,
suck away any particles from the filter,
when placed in the blood flow passageway or after being moved away from the blood flow passageway.

5. The device according to claim 1 , wherein the cleaning device comprises a first piston.

6. The device according to claim 5 , wherein the first piston is provided with at least one of;
a first recess, at an outer end portion of the first piston, and
a plurality of channels for accommodating the filter extended position of said first piston.

7. The device according to claim 5 , wherein the first piston is movable in a direction perpendicular to the direction of the blood flow passageway, and during movement is arranged to take away any clots from the filter.

8. The device according to claim 5 , comprising at least one of;
a source of pressurized air controlling the movement of the first piston,
an electric motor controlling the movement of the first piston,
a solenoid controlling the movement of the first piston, and
a second piston provided across the blood flow passageway from the first piston.

9. The device according to claim 8 , wherein the second piston is at least one of,
movable in a direction essentially perpendicular to the direction of the blood flow passageway, and
spring biased in the direction of the first piston.

10. The device according to claim 8 , wherein an outer end portion of the second piston is provided with a second recess.

11. The device according to claim 1 , further comprising additional replacement filters adapted to replace a dirty filter, when the filter is moved from said blood flow passageway.

12. The device according to claim 1 , further comprising an operation device adapted to operate the cleaning device to exchange the tilt.

13. The system according to claim 12 , wherein the operation device for exchanging the filter comprises a motor or a pump.

14. The device according to any of claim 1 , wherein the cleaning device comprises a rotating cassette ( 127 ) adapted to rotate the filter out from the blood flow passageway.

15. The device according to claim 12 , wherein the operation device is adapted to operate the cleaning device to clean the fresh filter, for being ready for later reinstallation in the blood flow passageway.

16. The device according to any of claim 1 , wherein the blood clot removal device is adapted to be placed in the patient's abdomen, thorax, limb, retroperitoneal region or cephalic or neck region.

17. A blood clot removal system, including a blood clot removal device according to claim 1 , for removing blood clots of a patient, adapted to be implanted in the patient, the system comprising a sensor adapted to sense at least one of a functional parameter of the of the blood clot removal system and a physical parameter of the patient.

18. The system according to claim 17 , comprising an internal control unit acting in response to the parameter or parameters sensed by the sensor, the system further comprising an operation device for operating the cleaning device, wherein the internal control unit controls the operation device to operate the cleaning device in response to the sensor sensing a parameter related to the accumulation of blood clots.

19. The system according to claim 17 , wherein accumulation of blood clots in the filter is sensed with at least one of: a visualizing, light sensor, a sensor measuring an electrical parameter, a sensor measuring a blood flow, a pressure sensor, a sensor measuring a pressure difference before and after the filter, or any other kind of sensor.

20. The system according to claim 17 , comprising a feedback device for sending information from inside the patient's body to the outside thereof to give feedback information related to a functional parameter of the blood clot removal device and/or a physical parameter of the patient in response to the sensor sensing a parameter related to the accumulation of blood clots.

21. The system according to claim 17 , comprising a heart pump connected to the blood flow passageway.

22. The system according to claim 17 , comprising at least one of an energy source adapted to power the blood clot removal device, a wireless energy transmitter for non-invasively energizing the blood clot removal device, and a wireless remote control for non-invasively regulating a function of the blood clot removal device.

Assignees

• Forsell Peter

Inventors

• Forsell Peter

Classifications

• A61M2205/10

  with powered movement mechanisms · CPC title

• A61M27/006

  Cerebrospinal drainage; Accessories therefor, e.g. valves · CPC title

• A61F2250/0001

  Means for transferring electromagnetic energy to implants · CPC title

• A61M2205/3331

  Pressure; Flow · CPC title

• A61F2250/0002

  for data transfer · CPC title