PRESSURE-DRIVEN IRRIGATION PUMP

• US 20160220303A1
• Filed: 02/04/2015
• Published: 08/04/2016
• Est. Priority Date: 02/04/2015
• Status: Active Grant

• Current Assignee: Biosense Webster Incorporated (Johnson & Johnson)
• Original Assignee: Biosense Webster Incorporated (Johnson & Johnson)
• Inventors: GOVARI, ASSAF
• Granted Patent: US 9,833,284 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 2218/002 Irrigation
• CPC Class Codes: A61M 2205/33 Controlling, regulating or measuring
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 3/0208 before use
• CPC Class Codes: A61M 3/022 Volume; Flow rate
• CPC Class Codes: A61M 3/0254 the liquid being pumped by the patient's weight A61M3/0225
• CPC Class Codes: A61M 5/145 using pressurised reservoirs, e.g. pressurised by means of pistons

Abstract

A medical pump includes first and second compartments, which are configured to accept respective first and second containers of fluid to be pumped to a medical device, and a paddle, which is fitted between the first and second compartments. The pump additionally includes a control module, which is configured to drive the paddle to alternate between first time periods in which the paddle applies pressure to the first container so as to pump the fluid therefrom, and second time periods in which the paddle applies the pressure to the second container so as to pump the fluid therefrom.

Claims

1. A medical pump, comprising:

first and second compartments, which are configured to accept respective first and second containers of fluid to be pumped to a medical device;

a paddle, which is fitted between the first and second compartments; and

a control module, which is configured to drive the paddle to alternate between first time periods in which the paddle applies pressure to the first container so as to pump the fluid therefrom, and second time periods in which the paddle applies the pressure to the second container so as to pump the fluid therefrom.

2. The medical pump according to claim 1, wherein the medical device comprises a probe comprising an ablation electrode that is configured to perform ablation of tissue, and wherein the probe is configured to receive the fluid and to irrigate the tissue with the received fluid during the ablation.

3. The medical pump according to claim 1, wherein the control module is configured to sense a position of the paddle and to change a rotation direction of the paddle so as to alternate between the first and second time periods based on the position of the paddle.

4. The medical pump according to claim 1, wherein the pump comprises a sensor, which is configured to measure an angle of the paddle and to send the measured angle to the control module so as to alternate between the first and second time periods based on the measured angle.

5. The medical pump according to claim 1, wherein the control module is configured to sense a reduced flow of the fluid from the first container and to change a rotation direction of the paddle so as to alternate between the first and second time periods based on the reduced flow.

6. The medical pump according to claim 5, wherein the pump is coupled to a flow meter, which is configured to measure the reduced flow in the first and second time periods, and to send the measured reduced flow to the control module.

7. The medical pump according to claim 1, wherein the first compartment is formed from a first wall and the paddle, the second compartment is formed from a second wall and the paddle, and the paddle rotates between the first and second walls about a hinge defined by a junction of planes defining the first and second walls.

8. A method, comprising;

providing first and second compartments, which are configured to accept respective first and second containers of fluid to be pumped to a medical device;

fitting a paddle between the first and second compartments; and

driving the paddle to alternate between first time periods in which the paddle applies pressure to the first container so as to pump the fluid therefrom, and second time periods in which the paddle applies the pressure to the second container so as to pump the fluid therefrom.

9. The method according to claim 8, wherein pumping the fluid comprises irrigating a tissue with the pumped fluid during an ablation of the tissue.

10. The method according to claim 8, wherein alternating between first time periods and second time periods comprises sensing a position of the paddle and changing a rotation direction of the paddle so as to alternate between the first and second time periods based on the position of the paddle.

11. The method according to claim 8, wherein sensing a position comprises measuring an angle of the paddle in the first and second time periods, and sending the measured angle to a control module controlling the paddle, so as to alternate between the first and second time periods based on the measured angle.

12. The method according to claim 8, and comprising sensing a reduced flow of the fluid and changing a rotation direction of the paddle so as to alternate between the first and second time periods based on the reduced flow.

13. The method according to claim 12, wherein sensing a position comprises measuring the reduced flow of the fluid in the first and second time periods, and sending the measured reduced flow to a control module controlling the paddle.

14. The method according to claim 8, wherein the first compartment is formed from a first wall and the paddle, the second compartment is formed from a second wall and the paddle, and the paddle rotates between the first and second walls about a hinge defined by a junction of planes defining the first and second walls.