CN219271783U - Flow regulator for intravenous infusion - Google Patents
Flow regulator for intravenous infusion Download PDFInfo
- Publication number
- CN219271783U CN219271783U CN202223190292.9U CN202223190292U CN219271783U CN 219271783 U CN219271783 U CN 219271783U CN 202223190292 U CN202223190292 U CN 202223190292U CN 219271783 U CN219271783 U CN 219271783U
- Authority
- CN
- China
- Prior art keywords
- shell
- housing
- sealing ring
- liquid outlet
- flow regulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A flow regulator for intravenous fluid includes a first housing, a second housing, and a sealing ring. The second housing has a liquid inlet, a liquid outlet, and an upwardly opening interior cavity. The sealing ring is sleeved outside the first shell in a mode of being capable of following the first shell to synchronously rotate, a liquid outlet groove and an adjusting flow channel are formed in the outer peripheral surface of the sealing ring, the adjusting flow channel extends along the circumferential direction, and the liquid outlet groove is located below the adjusting flow channel. The sealing ring and the first shell extend into the inner cavity of the second shell, and the sealing ring and the first shell are connected with the second shell in a mode of being capable of rotating relative to the second shell but not capable of axially moving; the outer peripheral surface of the sealing ring is in sealing fit with the side surface of the inner cavity, and a gap communicated with the liquid outlet is formed between the bottom surface of the sealing ring and the bottom surface of the inner cavity. The liquid inlet of the second shell is opposite to the circumferential line where the regulating flow channel is located. The utility model has simple structure and easy operation.
Description
Technical Field
The present utility model relates to intravenous infusion sets, and more particularly to flow regulators.
Background
In clinical medicine, flow regulators are widely used in infusion sets for intravenous infusion. Conventional flow regulators control the amount of infusion flow by adjusting the size of the cross-sectional area of the infusion tube, which is essential for the treatment of certain conditions.
Disclosure of Invention
The utility model aims to provide a flow regulator for intravenous transfusion, which has a simple structure and is easy to operate.
The embodiment of the utility model provides a flow regulator for intravenous transfusion, which comprises a first shell, a second shell and a sealing ring; the second shell is provided with a liquid inlet, a liquid outlet and an inner cavity which is opened upwards; the sealing ring is sleeved outside the first shell in a mode of synchronously rotating along with the first shell, a liquid outlet groove and an adjusting flow channel for adjusting liquid flow are arranged on the outer peripheral surface of the sealing ring, the adjusting flow channel extends along the circumferential direction of the sealing ring, the liquid outlet groove is positioned below the adjusting flow channel, and the top end of the liquid outlet groove is connected with the adjusting flow channel; the sealing ring and the first shell extend into the inner cavity of the second shell, and the sealing ring and the first shell are connected with the second shell in a manner of being capable of rotating relative to the second shell but not capable of moving axially; the outer peripheral surface of the sealing ring is in sealing fit with the side surface of the inner cavity, a gap is arranged between the bottom surface of the sealing ring and the bottom surface of the inner cavity, and the gap is communicated with the liquid outlet of the second shell and can receive liquid flowing out from the liquid outlet groove; the liquid inlet of the second shell is opposite to the circumferential line where the regulating flow channel is located; when the first shell and the second shell rotate relatively, the liquid input into the liquid inlet flows into different positions of the regulating flow channel so as to change the flow rate.
The utility model has at least the following advantages:
1. according to the embodiment of the utility model, when the first shell and the second shell relatively rotate, the liquid inlet of the second shell can be positioned at different positions of the regulating flow channel on the peripheral surface of the sealing ring, so that the liquid outlet flow of the second shell can be changed, and the operation is simple;
2. the adjusting flow passage of the embodiment of the utility model is arranged on the sealing ring instead of the first or the second shell, so that the manufacturing is easier.
Drawings
Fig. 1 schematically shows a perspective view of a flow regulator according to an embodiment of the present utility model.
Fig. 2 schematically shows an exploded schematic view of a flow regulator according to an embodiment of the present utility model.
Fig. 3 schematically illustrates a top view of a flow regulator according to an embodiment of the present utility model.
Fig. 4 schematically shows a cross-sectional view in the direction A-A in fig. 3.
Fig. 5 schematically shows the relative positions of the liquid inlet and the regulating flow channel in the operating state.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Please refer to fig. 1 to 4. A flow regulator for intravenous infusion according to an embodiment of the utility model includes a first housing 1, a second housing 2, and a seal ring 3.
The second housing 2 has a liquid inlet 21, a liquid outlet 22 and an upwardly open inner cavity 20. In the present embodiment, the liquid outlet 22 is located below the liquid inlet 21, closer to the bottom of the second housing 2.
The seal ring 3 is fitted over the first casing 1 so as to be rotatable in synchronism with the first casing 1. In the present embodiment, the inner peripheral surface of the seal ring 3 is in concave-convex engagement with the outer peripheral surface of the first housing 1. In a specific embodiment, a plurality of positioning grooves 31 extending vertically are provided on the inner peripheral surface of the seal ring 3 at intervals in the circumferential direction, and the tips of the plurality of positioning grooves 31 penetrate the top surface of the seal ring 3. The outer peripheral surface of the first shell 1 is provided with a plurality of positioning ribs 11 extending vertically at intervals along the circumferential direction, the outer peripheral surface of the first shell 1 is further provided with a first annular flange 12 extending along the circumferential direction above the plurality of positioning ribs 11, the plurality of positioning ribs 11 are embedded into the plurality of positioning grooves 31 in a one-to-one correspondence mode respectively, and the first annular flange 12 is pressed on the top surface of the sealing ring 3. The first housing 1 and the sealing ring 3 constitute an integrally rotatable assembly.
The outer peripheral surface of the sealing ring 3 is provided with a liquid outlet groove 33 and an adjusting flow channel 35 for adjusting the liquid flow, the adjusting flow channel 35 extends along the circumferential direction of the sealing ring 3, the liquid outlet groove 33 is positioned below the adjusting flow channel 35, and the top end of the liquid outlet groove 33 is connected with the adjusting flow channel 35.
In this embodiment, the adjusting flow passage 35 is an arc-shaped groove, and the area of the cross section in the depth direction of the arc-shaped groove gradually changes along the extending direction of the arc-shaped groove. In a specific embodiment, the width gradually narrows from one end of the arcuate recess to the other end, and the depth gradually becomes shallower. The central angle of the arc-shaped groove is 350 degrees. In other embodiments, the width tapers from one end of the arcuate recess to the other end, with the depth being constant.
In this embodiment, the liquid outlet groove 33 extends in the vertical direction, the top end of the liquid outlet groove 33 is connected with one end of the adjusting flow passage, and the bottom end of the liquid outlet groove 33 penetrates the bottom surface of the sealing ring 2. In the example shown in the drawings, the top end of the liquid outlet groove 33 is connected to the end of the arc-shaped groove 35 having the largest cross-sectional area in the depth direction.
The sealing ring 3 and the first housing 1 extend into the interior 20 of the second housing 2, and the sealing ring 3 and the first housing 1 are connected to the second housing 2 in a manner that they can rotate relative to the second housing 2 but are not axially movable. In this embodiment, the top end of the sealing ring 3 has a second annular flange 36 protruding radially outwards, the second annular flange 36 pressing against the top surface of the second housing 2. The first casing 1 is rotatably clamped to the second casing 2. The center axis of the first housing 1, the center axis of the seal ring 3, and the center axis of the second housing 2 are located on the same straight line, and one of the first housing 1 and the second housing 2 is rotatable with respect to the other about its own center axis.
In a specific embodiment, the bottom of the second housing 2 is provided with a central protruding tube 23 extending downwards, the tube hole 230 of the central protruding tube 23 is communicated with the inner cavity 20 of the second housing, and the wall of the tube hole of the central protruding tube 23 is provided with an annular protrusion 233 extending along the circumferential direction of the tube hole. The outer peripheral surface of the bottom of the first shell 1 is provided with an annular clamping groove 13 extending along the circumferential direction; the bottom of the first housing 1 extends into the pipe hole 230 of the central convex pipe 23, and the annular protrusion 233 is clamped into the annular clamping groove 13, so that the first housing 1 and the second housing 2 are connected together and cannot be loosened, but can rotate relatively.
The outer peripheral surface of the sealing ring 3 is in sealing engagement with the side surface of the inner cavity 20 of the second housing. In the present embodiment, the seal ring 3 is made of an elastic material such as silica gel, rubber, or the like, and the outer peripheral surface of the seal ring 3 is interference-fitted with the inner peripheral surface of the inner cavity 20 of the second housing, so that the liquid can be prevented from overflowing. Alternatively, the outer peripheral surface of the seal ring 3 is compressed by 0.2 to 0.5mm.
A gap 3g is formed between the bottom surface of the seal ring 3 and the bottom surface of the inner cavity 20 of the second housing, the gap 3g forms a liquid medicine channel, and the gap 3g is communicated with the liquid outlet 22 of the second housing 2 and can receive the liquid flowing out from the liquid outlet groove 33.
The liquid inlet 21 of the second housing 2 is opposite to the circumferential line on which the regulating flow passage 35 is located (see fig. 5); when the first housing 1 and the second housing 2 are rotated relatively, the liquid inputted into the liquid inlet 21 flows into different positions of the regulating flow passage 35 to change the liquid flow rate.
Optionally, an operation knob 15 is provided on the top of the first housing 1 to facilitate the operator to operate the first housing 1 to rotate. The first housing 1 is made of a transparent material plastic (such as ABS, PC, etc.), and can observe the flowing state of the liquid medicine.
Further, the outer side surface of the first housing 1 and the outer side surface of the second housing 2 are respectively provided with a first stop portion 14 and a second stop portion 24, and when the first stop portion 14 and the second stop portion 24 abut against each other, the first housing 1 can be prevented from rotating relative to the second housing 2 in a first rotation direction, and the first rotation direction can be clockwise or counterclockwise.
In operation, the liquid inlet 21 of the second housing 2 is connected to the liquid medicine container via a pipeline, and the liquid outlet 22 of the second housing 2 is connected to the infusion line on the patient side. When the liquid inlet 21 of the second housing 2 is opposite to the end of the arc-shaped groove 35 with the largest cross-sectional area in the depth direction, the end of the arc-shaped groove 35 with the largest cross-sectional area in the depth direction is connected with the liquid outlet groove 33, the liquid medicine flowing in from the liquid inlet 21 directly enters the gap 3g through the liquid outlet groove 33 and then directly flows to the patient side through the liquid outlet 22, at this time, the liquid medicine flow rate is unchanged, and the liquid medicine is at the maximum flow rate. After the second casing 2 is held by one hand and the operation knob 15 is held by the other hand to rotate the first casing 1, the liquid inlet 21 can be opposite to any position of the arc-shaped groove 35, and after stopping rotating, the liquid medicine flows into the liquid outlet groove 33 after entering the arc-shaped groove 35, and then enters the gap 3g. The liquid medicine flows into the arc-shaped groove 35 from different positions of the arc-shaped groove 35, so that the sectional area flowing through the arc-shaped groove 35 is changed, thereby changing the flow rate of the liquid medicine. The closer the liquid inlet 21 is to the end of the arc-shaped groove 35 where the area of the cross section in the depth direction is smaller, the smaller the flow rate of the liquid is. When the first housing 1 rotates in the first rotation direction relative to the second housing 2 until the first stopper 14 abuts against the second stopper 24, the liquid inlet 21 faces the position between the two ends of the arc-shaped groove 35, and the liquid medicine flowing in from the liquid inlet 21 cannot enter the arc-shaped groove 35, so that the flow regulator is closed.
The present embodiments are described in conjunction with specific examples, but it will be understood by those skilled in the art that the utility model is not limited to the examples described herein and that various modifications and variations may be made without departing from the spirit and scope of the utility model.
Claims (12)
1. A flow regulator for intravenous fluid, comprising a first housing, a second housing, and a sealing ring;
the second shell is provided with a liquid inlet, a liquid outlet and an inner cavity which is opened upwards;
the sealing ring is sleeved outside the first shell in a mode of synchronously rotating along with the first shell, a liquid outlet groove and an adjusting flow channel for adjusting liquid flow are arranged on the outer peripheral surface of the sealing ring, the adjusting flow channel extends along the circumferential direction of the sealing ring, the liquid outlet groove is positioned below the adjusting flow channel, and the top end of the liquid outlet groove is connected with the adjusting flow channel;
the sealing ring and the first shell extend into the inner cavity of the second shell, and the sealing ring and the first shell are connected with the second shell in a mode of being capable of rotating relative to the second shell but not capable of axially moving; the outer peripheral surface of the sealing ring is in sealing fit with the side surface of the inner cavity, a gap is formed between the bottom surface of the sealing ring and the bottom surface of the inner cavity, and the gap is communicated with the liquid outlet of the second shell and can receive liquid flowing out from the liquid outlet groove;
the liquid inlet of the second shell is opposite to the circumferential line where the regulating flow channel is located; when the first shell and the second shell rotate relatively, the liquid input into the liquid inlet flows into different positions of the regulating flow channel so as to change the flow rate.
2. The flow regulator of claim 1, wherein the flow regulating channel is an arcuate groove having a cross-sectional area in a depth direction that varies gradually along an extension direction of the arcuate groove.
3. The flow regulator of claim 2, wherein the arcuate recess tapers in width and tapers in depth from one end to the other.
4. The flow regulator of claim 1, wherein the outer side surface of the first housing and the outer side surface of the second housing are respectively provided with a first stop portion and a second stop portion, and the first stop portion and the second stop portion can prevent the first housing from rotating relative to the second housing in the first rotation direction when abutting against each other;
when the first shell rotates relative to the second shell along the first rotating direction until the first stop part abuts against the second stop part, the liquid inlet is opposite to the position between the two ends of the regulating flow channel, so that the flow regulator is closed.
5. The flow regulator of claim 1, wherein the central axis of the first housing, the central axis of the seal ring, and the central axis of the second housing are collinear, one of the first housing and the second housing being rotatable about its central axis relative to the other.
6. The flow regulator of claim 1, wherein the first housing is rotatably clamped to the second housing.
7. The flow regulator of claim 1, wherein the bottom of the second housing is provided with a downwardly extending central boss, and the orifice of the central boss is in communication with the interior cavity of the second housing; the hole wall of the central convex pipe is provided with an annular bulge extending along the circumferential direction of the hole;
the outer peripheral surface of the bottom of the first shell is provided with an annular clamping groove extending along the circumferential direction; the bottom of the first shell stretches into the pipe hole of the central convex pipe, and the annular bulge is clamped into the annular clamping groove.
8. The flow regulator of claim 1, wherein an inner peripheral surface of the seal ring is in concave-convex engagement with an inner peripheral surface of the first housing.
9. The flow regulator according to claim 1 or 8, wherein a plurality of vertically extending positioning grooves are provided on the inner peripheral surface of the seal ring at intervals in the circumferential direction, and the top ends of the plurality of positioning grooves penetrate the top surface of the seal ring;
the outer peripheral surface of the first shell is provided with a plurality of positioning ribs which extend vertically at intervals along the circumferential direction, the outer peripheral surface of the first shell is further provided with a first annular flange which extends along the circumferential direction above the positioning ribs, the positioning ribs are embedded into the positioning grooves in a one-to-one correspondence mode, and the first annular flange is pressed on the top surface of the sealing ring.
10. A flow regulator according to claim 1 or 8 wherein the top end of the sealing ring has a radially outwardly projecting second annular flange which presses against the top surface of the second housing.
11. The flow regulator of claim 1, wherein the seal ring is made of an elastic material, and an outer peripheral surface of the seal ring is interference fit with an inner peripheral surface of the inner cavity of the second housing.
12. The flow regulator of claim 1, wherein the liquid outlet groove extends in a vertical direction, a top end of the liquid outlet groove is connected with one end of the regulating flow passage, and a bottom end of the liquid outlet groove penetrates through a bottom surface of the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223190292.9U CN219271783U (en) | 2022-11-30 | 2022-11-30 | Flow regulator for intravenous infusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223190292.9U CN219271783U (en) | 2022-11-30 | 2022-11-30 | Flow regulator for intravenous infusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219271783U true CN219271783U (en) | 2023-06-30 |
Family
ID=86925025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223190292.9U Active CN219271783U (en) | 2022-11-30 | 2022-11-30 | Flow regulator for intravenous infusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219271783U (en) |
-
2022
- 2022-11-30 CN CN202223190292.9U patent/CN219271783U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5755683A (en) | Stopcock valve | |
| US6269704B1 (en) | Blood sampling device | |
| CA2913716C (en) | Valve assembly for a two handle faucet | |
| JP4236558B2 (en) | Regulating valve for regulating flow rate in infusion or transfusion procedures | |
| US5507314A (en) | Mixer valve having a ball valve element | |
| CN1789769B (en) | Liquid pressure regulator | |
| US9874283B1 (en) | Valve device capable of fast switching and fine adjustment of flow | |
| CN109312871A (en) | Flow channel switching valve | |
| CN219271783U (en) | Flow regulator for intravenous infusion | |
| US9115818B2 (en) | Single-lever mixing cartridge | |
| CN112324931B (en) | Micro-fluidic multi-gear flow regulator | |
| JPH0474596B2 (en) | ||
| CN219271782U (en) | Flow regulating filter for intravenous infusion | |
| CN105641779B (en) | Infusion flow speed regulator | |
| CN212564519U (en) | Fluid control valve | |
| CN200970396Y (en) | Micro regulator for transfusion | |
| JP4921251B2 (en) | Mixing valve | |
| CN221610599U (en) | Double-control electromagnetic valve device | |
| CN211449739U (en) | Flow regulating valve | |
| CN218573964U (en) | Water outlet device | |
| CN217463290U (en) | Faucet with simplified structure | |
| CN216975180U (en) | Pump with one-way valve device | |
| CN214171374U (en) | Valve gate | |
| CN220142323U (en) | Infusion flow regulator and infusion device | |
| CN215172319U (en) | Funnel type valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |