Infusion flow regulator

Patent metadata

Field	Value
Publication number	US-11918781-B2
Application number	US-201917254994-A
Country	US
Kind code	B2
Filing date	May 27, 2019
Priority date	Jun 22, 2018
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

An infusion flow regulator includes: a main body having an inlet through which fluid is introduced and an outlet through which the fluid is discharged; and a rotary dial rotatably coupled to the main body, with a sealing member interposed therebetween, so as to regulate a flow rate of the fluid, in which the rotary dial includes a regulating flow path having a shape of a recessed groove in cross section with a first width and a first height, and the regulating flow path includes a first region in which the first width is constant and the first height is decreased, and a second region in which both the first width and the first height are decreased. By the aforementioned configuration, the infusion flow regulator for the fluid can accurately regulate the flow rate even in a region where the flow rate of the fluid is very small.

First claim

What is claimed is:

1. An infusion flow regulator comprising:
a main body including an inlet through which fluid is introduced and an outlet through which the fluid is discharged; and a rotary dial rotatably coupled to the main body, with a sealing member interposed therebetween, so as to regulate a flow rate of the fluid,
wherein the rotary dial includes a regulating flow path shaped as a recessed groove having a first width and a first depth at a given cross section, and
the regulating flow path includes:
a first region in which the first width of the recessed groove remains constant in a first arcuate direction and the first depth of the recessed groove is decreased in the first arcuate direction, and
a second region in which the first width of the recessed groove is decreased in the first arcuate direction and the first depth of the recessed groove is decreased in the first arcuate direction, and

wherein the second region begins at a point where the first depth of the recessed groove becomes equal in value to the first width of the recessed groove.

2. The infusion flow regulator according to claim 1 , further comprising a collector flow path shaped as a recessed groove and in communication with the regulating flow path to guide the fluid, wherein
a width and a depth of the collector flow path are constant.

3. The infusion flow regulator according to claim 2 , wherein the regulating flow path is an arc-shaped flow path, and the collector flow path is a circular flow path, wherein
the infusion flow regulator further comprises a connecting flow path connecting the regulating flow path and the collector flow path.

4. The infusion flow regulator according to claim 1 , wherein the first depth of the regulating flow path is linearly decreased in the first arcuate direction in the first region.

5. The infusion flow regulator according to claim 1 , wherein the second region is formed over a region ⅓ to ½ of a length of the regulating flow path.

6. The infusion flow regulator according to claim 1 , wherein a cross-section of the regulating flow path has a rectangular shape in the first region, and
a cross-section of the regulating flow path has a square shape in the second region.

7. An infusion flow regulator comprising:
a main body including an inlet through which fluid is introduced and an outlet through which the fluid is discharged; and a rotary dial rotatably coupled to the main body, with a sealing member interposed therebetween, so as to regulate a flow rate of the fluid,
wherein the rotary dial includes a regulating flow path shaped as a recessed groove having a first width and a first depth at a given cross section, and
the regulating flow path includes:
a first region in which the first width of the recessed groove remains constant in a first arcuate direction and the first depth of the recessed groove is decreased in the first arcuate direction, and
a second region in which the first width of the recessed groove is decreased in the first arcuate direction and the first depth of the recessed groove is decreased in the first arcuate direction.

8. The infusion flow regulator according to claim 7 , further comprising a collector flow path shaped as a recessed groove and in communication with the regulating flow path to guide the fluid, wherein
a width and a depth of the collector flow path are constant.

9. The infusion flow regulator according to claim 8 , wherein the regulating flow path is an arc-shaped flow path, and the collector flow path is a circular flow path, wherein
the infusion flow regulator further comprises a connecting flow path connecting the regulating flow path and the collector flow path.

10. The infusion flow regulator according to claim 7 , wherein the first depth of the regulating flow path is linearly decreased in the first arcuate direction in the first region.

11. The infusion flow regulator according to claim 7 , wherein the second region is formed over a region ⅓ to ½ of a length of the regulating flow path.

12. The infusion flow regulator according to claim 7 , wherein a cross-section of the regulating flow path has a rectangular shape in the first region, and
a cross-section of the regulating flow path has a square shape in the second region.

Assignees

• Korea Aerospace Res Inst

Inventors

• Park Poo Min
• Kim Hyung Mo
• Park Tae Choon
• Kang Young Seok
• Huh Jae Sung
• Lee Doo Yong

Classifications

• A61M5/16877 Primary

  Adjusting flow; Devices for setting a flow rate · CPC title

• A61M5/16804

  Flow controllers · CPC title

• A61M5/16813 Primary

  by controlling the degree of opening of the flow line · CPC title