Micro pump

Patent metadata

Field	Value
Publication number	US-10773017-B2
Application number	US-201816124751-A
Country	US
Kind code	B2
Filing date	Sep 7, 2018
Priority date	Oct 27, 2017
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A micro pump is applied to be implanted into human's blood vessels and includes a substrate, a flow-guiding-and-actuating unit, plural switching valves, a driving chip and a micro-monitor. The substrate has plural guiding channels including an inlet channel, an outlet channel and a branch channel. The flow-guiding-and-actuating unit covers a compressing chamber, and is enabled to change the volume of the compressing chamber so as to transport fluid. When a communication connector of the driving chip receives an external command, the driving chip enables the flow-guiding-and-actuating unit and the micro-monitor, and controls the open/closed states of the switching valves covering an outlet aperture and a storage outlet, thereby the flow-guiding-and-actuating unit drives the fluid medicine from a storage chamber to the outlet aperture, so as to deliver the fluid medicine to a target blood vessel.

First claim

What is claimed is:

1. A micro pump for being implanted into a human blood vessel, comprising:
a substrate comprising a plurality of guiding channels, a compressing chamber, a storage chamber, a first covering component and a second covering component, wherein the plurality of guiding channels comprises an inlet channel, an outlet channel and a branch channel in communication with the inlet channel, the first covering component covers the inlet channel, the outlet channel and the branch channel and includes an inlet aperture corresponding to the inlet channel and an outlet aperture corresponding to the outlet channel, the compressing chamber is in communication with the inlet channel and the outlet channel, the second covering component covers the storage chamber so as to store a medicine fluid in the storage chamber, and the storage chamber has a storage outlet in communication with the branch channel;
a flow-guiding-and-actuating unit configured to cover the compressing chamber, wherein when the flow-guiding-and-actuating unit is powered, the flow-guiding-and-actuating unit is enabled to change the volume of the compressing chamber so as to transport fluid;
a plurality of switching valves covering the inlet aperture, the outlet aperture and the storage outlet, respectively;
a driving chip packaged on the substrate in a system-in-package manner, the driving chip powering and enabling the flow-guiding-and-actuating unit, and controlling open/closed states of the plurality of switching valves, wherein the driving chip includes a communication connector; and
a micro-monitor packaged on the substrate in the system-in-package manner, the micro-mirror being controlled by the driving chip to be enabled;
wherein the micro pump is configured to be implanted in the human blood vessel and receives an external command through the communication connector of the driving chip to enable the flow-guiding-and-actuating unit and the micro-monitor, and to control the open/closed states of the switching valves covering the inlet aperture and the outlet aperture, so that a fluid flow is generated and kinetic energy that the fluid flow possesses facilitates displacement of the micro pump in the human blood vessel, wherein the micro-monitor is enabled to monitor a target blood vessel needing to be treated, wherein while the switching valve covering the inlet aperture is closed and the switching valves covering the outlet aperture and the storage outlet are opened, the medicine fluid stored in the storage chamber is driven by the flow-guiding-and-actuating unit to be transported to the outlet aperture and delivered to the target blood vessel.

2. The micro pump according to claim 1 , wherein the flow-guiding-and-actuating unit comprises a carrier and an actuator, the carrier covers the compressing chamber, and the actuator is attached to a surface of the carrier, wherein in response to an applied voltage, the actuator drives the carrier to be deformed in resonance so as to drive the fluid between the inlet channel and the outlet channel to be transported.

3. The micro pump according to claim 2 , wherein the actuator is a piezoelectric component.

4. The micro pump according to claim 1 , further comprising a valve membrane disposed in the inlet channel and the outlet channel for controlling the inlet channel and the outlet channel to be in an open state or a closed state while the flow-guiding-and-actuating unit is enabled to change the volume of the compressing chamber.

5. The micro pump according to claim 4 , wherein the substrate further comprises convex structures in the inlet channel and the outlet channel to provide a pre-force when the valve membrane is abutting against the convex structures.

6. The micro pump according to claim 1 , wherein the driving chip comprises a graphene battery for providing power.

7. The micro pump according to claim 1 , wherein the communication connector transmits and receives information via a wireless communication path.

8. The micro pump according to claim 1 , wherein each of the plurality of switching valves comprises a stationary component, a sealing component and a displacement component, the displacement component is disposed between the stationary component and the sealing component, the stationary component has at least two first orifices, and the displacement component has at least two second orifices respectively corresponding in position to the at least two first orifices; and the sealing component has at least one third orifice misaligned with the at least two first orifices and the at least two second orifices.

9. The micro pump according to claim 8 , wherein the displacement component is made of a charged material, and the stationary component is made of a bipolar conductive material, wherein the displacement component and the stationary component are maintained in reversed polarities, the displacement component moves close to the stationary component so as to open the switching valve.

10. The micro pump according to claim 9 , wherein the polarity of the stationary component is controlled by the driving chip.

11. The micro pump according to claim 8 , wherein the displacement component is made of a charged material, and the stationary component is made of a bipolar conductive material, wherein the displacement component and the stationary component are maintained in identical polarities, the displacement component moves close to the stationary component so as to close the switching valve.

12. The micro pump according to claim 11 , wherein the polarity of the stationary component is controlled by the driving chip.

13. The micro pump according to claim 8 , wherein the displacement component is made of a magnetic material, and the stationary component is made of an electromagnet material, wherein the displacement component and the stationary component are maintained in reversed polarities, the displacement component moves close to the stationary component so as to open the switching valve.

14. The micro pump according to claim 13 , wherein the polarity of the stationary component is controlled by the driving chip.

15. The micro pump according to claim 8 , wherein the displacement component is made of a magnetic material, and the stationary component is made of an electromagnet material, wherein the displacement component and the stationary component are maintained in identical polarities, the displacement component moves close to the sealing component so as to close the switching valve.

16. The micro pump according to claim 15 , wherein the polarity of the stationary component is controlled by the driving chip.

17. A micro pump for being implanted into a human blood vessel, comprising:
at least one substrate comprising a plurality of guiding channels, at least one compressing chamber, at least one storage chamber, at least one first covering component and at least one second covering component, wherein the plurality of guiding channels comprises at least one inlet channel, at least one outlet channel and at least one branch channel in communication with the inlet channel, the first covering component covers the inlet channel, the outlet channel and the branch channel and includes at least one inlet aperture corresponding to the inlet channel and at least one outlet aperture corresponding to the outlet channel, the compressing chamber is in communication with the inlet channel and the outlet channel, the second covering component covers the storage chamber so as to store at least one medicine fluid in the storage chamber, and the storage chamber has at least one storage outl

Assignees

• Microjet Technology Co Ltd

Inventors

• Mou Hao-Jan
• Mo Li-Pang
• Han Yung-Lung
• Huang Chi-Feng
• Tsai Chang-Yen

Classifications

• F04B53/1072

  the valve being an elastic body, the length thereof changing in the opening direction · CPC title

• F04B43/046

  with piezoelectric drive · CPC title

• A61M2205/0244

  Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology · CPC title

• A61B2562/028

  Microscale sensors, e.g. electromechanical sensors [MEMS] · CPC title

• A61M5/14276 Primary

  specially adapted for implantation · CPC title