Methods and systems for irrigating particulates during heart pump implantation

Patent metadata

Field	Value
Publication number	US-12440239-B2
Application number	US-202117356908-A
Country	US
Kind code	B2
Filing date	Jun 24, 2021
Priority date	Mar 26, 2018
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

The invention relates generally to methods and systems for irrigating particulates during heart pump implantation, and more specifically relates to irrigating and removing particulates that may be released when coring a patient's heart tissue. A method of irrigating particulates during blood pump implantation includes inserting a removable tissue irrigating device into a patient's heart. The removable tissue irrigating device includes a delivery tube and an irrigation conduit extending through the delivery tube. The irrigation conduit is extended out of an opening in the delivery tube to a deployed position from a stored position. The irrigation conduit is substantially disposed within the delivery tube when in the stored position and has a distal portion protruding out of the delivery tube when in the deployed position. Fluid is dispersed from the irrigation conduit into the patient's heart to remove particulates released during and/or after a coring procedure.

First claim

What is claimed is:

1. A method of irrigating particulates during blood pump implantation, the method comprising:
inserting a removable tissue irrigating device into a patient's heart, wherein the removable tissue irrigating device comprises a delivery tube and an irrigation conduit extending through the delivery tube;
extending the irrigation conduit out of an opening in the delivery tube to a deployed position from a stored position, wherein the irrigation conduit is substantially disposed within the delivery tube when in the stored position and has a distal portion protruding out of the delivery tube when in the deployed position;
dispersing fluid from the irrigation conduit into the patient's heart to remove particulates released during and/or after a coring procedure; and
removing the removable tissue irrigating device from the patient's heart.

2. The method of claim 1 , further comprising coring an opening in a portion of the patient's heart.

3. The method of claim 1 , wherein inserting the removable tissue irrigating device comprises inserting the removable tissue irrigating device through a cored opening in the patient's heart.

4. The method of claim 1 , further comprising moving the irrigation conduit to the stored position prior to removing the removable tissue irrigating device from the patient's heart.

5. The method of claim 1 , further comprising attaching an inflow cannula of a blood pump to the patient's heart after removing the removable tissue irrigating device from the patient's heart.

6. The method of claim 1 , further comprising switching a cardiopulmonary bypass machine coupled to the patient's heart from an on state to an off state such that the particulates are ejected from the patient's heart, suctioning the particulates out of the patient's heart, or removing the particulates with tweezers.

7. The method of claim 1 , further comprising inserting a removable particulate capture device into the patient's heart prior to the coring procedure, wherein the removable particulate capture device is configured to capture and remove particulates released during and/or after the coring procedure or by the dispersed fluid.

8. The method of claim 1 , wherein the removable tissue irrigating device comprises irrigation conduits, wherein each of the irrigation conduits is configured for dispensing fluid.

9. The method of claim 1 , wherein the irrigation conduit comprises holes configured to allow fluid to be dispersed through the holes into the patient's heart.

10. The method of claim 1 , wherein the irrigation conduit extends in a substantially arcuate manner out of the opening in the delivery tube in the deployed position.

11. The method of claim 1 , wherein the removable tissue irrigating device is inserted into a ventricle of the patient's heart.

12. The method of claim 1 , further comprising:
inserting a removable particulate capture device into the patient's heart prior to the coring procedure upon the patient's heart, wherein the removable particulate capture device is movable between a collapsed configuration and an expanded configuration;
expanding the removable particulate capture device to the expanded configuration from the collapsed configuration when the removable particulate capture device is positioned within the patient's heart;
capturing particulates released during and/or after the fluid dispersal or the coring procedure; and
removing the particulate capture device with the captured particulates and the removable tissue irrigating device from the patient's heart through a cored opening in the patient's heart.

13. A medical system for irrigating particulates during blood pump implantation, the medical system comprising:
a removable tissue irrigating device configured to be deployed within a patient's heart to irrigate the patient's heart of particulates released from a coring procedure upon the patient's heart, wherein the removable tissue irrigating device comprises:
a delivery tube; and
an irrigation conduit having a proximal end configured to be connected to a fluid source to receive a flow of irrigation fluid from the fluid source, wherein the irrigation conduit extends through the delivery tube, wherein the irrigation conduit is movable between a stored position and a deployed position, wherein the irrigation conduit is configured to be positioned substantially within the delivery tube in the stored position and comprises a distal end portion that extends out of an opening in the delivery tube in the deployed position, wherein the distal end portion comprises one or more holes configured to disperse fluid into the patient's heart when in the deployed position within the patient's heart, wherein the distal end portion has a closed distal end to enhance flow of the fluid through the one or more holes, wherein the irrigation conduit is configured to output all of the flow of irrigation fluid from the fluid source through the one or more holes, and wherein the distal end portion of the irrigation conduit has a flexible atraumatic configuration to reduce likelihood of damaging a tissue contacted by the distal end portion.

14. The medical system of claim 13 , further comprising a removable particulate capture device configured to capture particulates released during and/or after the coring procedure.

15. The medical system of claim 13 , wherein the delivery tube comprises an aspiration lumen for aspiration of loose particles released via irrigation of the patient's heart.

16. The medical system of claim 13 , further comprising a second irrigation conduit having a proximal end portion configured to be connected to the fluid source to receive a second flow of irrigation fluid from the fluid source, wherein the second irrigation conduit extends through the delivery tube, wherein the second irrigation conduit is independently movable relative to the irrigation conduit between a stored position of the second irrigation conduit and a deployed position of the second irrigation conduit, wherein the second irrigation conduit is configured to be positioned substantially within the delivery tube in the stored position of the second irrigation conduit and comprises a distal end portion that extends out of a second opening in the delivery tube in the deployed position of the second irrigation conduit, wherein the distal end portion of the second irrigation conduit comprises one or more second irrigation tube holes configured to disperse fluid into the patient's heart when in the deployed position within the patient's heart, and wherein the second irrigation conduit is configured to output all of the second flow of irrigation fluid from the fluid source through the one or more second irrigation tube holes.

17. The medical system of claim 13 , further comprising a catheter handle, wherein a proximal end portion of the irrigation conduit extends to and is coupled to the catheter handle, and wherein the catheter handle is operable to move the proximal end portion of the irrigation conduit relative to the delivery tube to reposition the irrigation conduit between the stored position and the deployed position.

18. A medical system for irrigating particulates during blood pump implantation, the medical system comprising:
a removable tissue irrigating device configured to be deployed within a patient's heart to irrigate the patient's heart of particulates released from a coring procedure upon the patient's heart, the removable tissue irrigating device comprising:
a delivery tube; and
an irrigation conduit extending through the delivery tube, the irriga

Assignees

• Tc1 Llc

Inventors

• Franklin Stephen
• Keen Rachel

Classifications

• A61M3/02

  Enemata; Irrigators · CPC title

• A61M1/77

  Suction-irrigation systems (aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463) · CPC title

• A61B17/32053

  Punch like cutting instruments, e.g. using a cylindrical or oval knife (A61B17/326 takes precedence; trepans A61B17/1695) · CPC title

• A61M60/237

  the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps · CPC title

• A61M60/178

  drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices · CPC title