阅读说明：本技术 适用微剂量输注的安全阀组件、微剂量分泌泵及胰岛素泵 (Be suitable for little dose infusion's safety valve subassembly, little dose secretion pump and insulin pump ) 是由 卓力 于 2021-09-27 设计创作，主要内容包括：本发明提供了一种适用微剂量输注的安全阀组件、微剂量分泌泵及胰岛素泵,包括：阀体、柔性体和出针单元；所述阀体与介质输出设备连接,所述柔性体连接在所述阀体与介质输出设备之间,所述出针单元连接所述阀体；所述介质输出设备开设有介质进出口和柔性体驱动口,所述阀体内设置有第一管路,所述第一管路的输入端连接所述介质进出口,所述第一管路的输出端位于所述柔性体的一侧,所述柔性体驱动口位于所述柔性体的另一侧；所述介质进出口的截面积小于所述柔性体驱动口的截面积。本发明可以解决介质输出设备输出在失效的过程中注射介质速度过快的问题,在某些应用条件下,如注射胰岛素或药剂,过量的注射会造成生命危险。(The invention provides a safety valve component suitable for micro-dose infusion, a micro-dose secretion pump and an insulin pump, comprising: the needle outlet unit comprises a valve body, a flexible body and a needle outlet unit; the valve body is connected with a medium output device, the flexible body is connected between the valve body and the medium output device, and the needle outlet unit is connected with the valve body; the medium output device is provided with a medium inlet and outlet and a flexible body driving port, a first pipeline is arranged in the valve body, the input end of the first pipeline is connected with the medium inlet and outlet, the output end of the first pipeline is positioned on one side of the flexible body, and the flexible body driving port is positioned on the other side of the flexible body; the sectional area of the medium inlet and outlet is smaller than that of the flexible body driving port. The invention can solve the problem that the speed of injecting the medium is too high in the process of failure of the medium output device, and under certain application conditions, such as insulin or medicament injection, the life danger can be caused by excessive injection.)

1. A safety valve assembly adapted for microdose infusion, comprising: a valve body (301), a flexible body (304) and a needle outlet unit (400);

the valve body (301) is connected with a medium output device, the flexible body (304) is connected between the valve body (301) and the medium output device, and the needle outlet unit (400) is connected with the valve body (301);

the medium output equipment is provided with a medium inlet and outlet (305) and a flexible body driving port (306), a first pipeline is arranged in the valve body (301), the input end of the first pipeline is connected with the medium inlet and outlet, the output end of the first pipeline is positioned on one side of the flexible body (304), and the flexible body driving port is positioned on the other side of the flexible body (304);

the sectional area of the medium inlet and outlet is smaller than that of the flexible body driving port.

2. The safety valve assembly adapted for micro-dose infusion according to claim 1, wherein a second pipeline is further provided inside the valve body (301);

the input end of the second pipeline is positioned at one side of the flexible body (304), and the output end of the second pipeline is connected with the needle outlet unit (400).

3. The safety valve assembly adapted for microdose infusion of claim 1, wherein the connection of the input of the first tubing to the output of the media delivery device is surrounded by a sealing element (303).

4. The safety valve assembly for micro-dose infusion according to claim 1, wherein the valve body (301) is provided with an injection port (302), and the injection port (302) is connected with the medium inlet and outlet.

5. A safety valve assembly adapted for microdose infusion according to claim 4 where a one-way valve is located within the injection port (302) or where a blocking member is removably attached.

6. The safety valve assembly adapted for microdose infusion according to claim 1, wherein the needle outlet unit (400) comprises a needle.

7. A safety valve assembly adapted for microdose infusion according to claim 1 where the edge position of the flexible body (304) is sealingly connected between the valve body (301) and the medium outlet device.

8. A safety valve assembly adapted for microdose infusion according to claim 1 where the flexible body (304) deforms in response to pressure on both sides;

when the medium output by the medium output device exceeds a preset flow rate, the pressure on the other side of the flexible body (304) is greater than the pressure on one side, so that the flexible body (304) deforms towards the one side and blocks the pipeline;

the flexible body (304) does not block the pipeline when the medium output by the medium output device does not exceed a preset flow rate.

9. A microdose secretion pump comprising a safety valve assembly as claimed in any one of claims 1 to 8 adapted for microdose infusion.

10. An insulin pump comprising a safety valve assembly adapted for microdose infusion as claimed in any one of claims 1 to 8.

Technical Field

The invention relates to the field of injection equipment, in particular to a safety valve component suitable for micro-dose infusion, a micro-dose secretion pump and an insulin pump.

Background

The insulin pump consists of a pump, a small syringe and a transfusion tube connected with the small syringe. The small syringe can contain 3 ml of insulin at most, after the syringe is arranged in the pump, the guide needle at the front end of the connected infusion tube is inserted into the subcutaneous (generally, the abdominal wall) of a patient by using the needle injector, and then the screw motor of the battery-driven insulin pump pushes the piston of the small syringe to infuse the insulin into the body. The insulin pump is basically used for simulating the secretion of human pancreas for infusion, continuously injecting insulin to the subcutaneous part of a user according to the required dosage of the human body, and keeping the blood sugar stable all day long so as to achieve the purpose of controlling diabetes.

Patent document CN110721364A discloses a pump for administering insulin at a fixed amount and a fixed time, which can be fixed to the body of a patient and can automatically inject insulin at a fixed amount and a fixed time. It can be seen that insulin-like media require strict infusion on a timed, quantitative basis or are otherwise prone to harm to the user's life and health. The patent document adopts MCU to control the on-off time of the air pump, thereby realizing the purpose of timing and quantifying.

However, although it is an effective implementation scheme to control the on-off time of the air pump through the MCU, the air pressure in the air pump is variable (gradually attenuated), and when the air pump is used, the air pressure is higher, which results in more output air, and the speed of insulin infused by the insulin pump is too fast, and exceeds the normal insulin secretion level of human body, resulting in adverse consequences, so it is necessary to design a safety valve to prevent the too fast infusion speed.

Disclosure of Invention

In view of the shortcomings in the prior art, it is an object of the present invention to provide a safety valve assembly suitable for microdose infusion, a microdose secretion pump and an insulin pump.

According to the present invention there is provided a safety valve assembly suitable for micro-dose infusion, comprising: a valve body 301, a flexible body 304 and a needle outlet unit 400;

the valve body 301 is connected with a medium output device, the flexible body 304 is connected between the valve body 301 and the medium output device, and the needle outlet unit 400 is connected with the valve body 301;

the medium output device is provided with a medium inlet and outlet and a flexible body driving port, a first pipeline is arranged in the valve body 301, the input end of the first pipeline is connected with the medium inlet and outlet, the output end of the first pipeline is positioned at one side of the flexible body 304, and the flexible body driving port is positioned at the other side of the flexible body 304;

the sectional area of the medium inlet and outlet is smaller than that of the flexible body driving port.

Preferably, a second pipeline is further arranged inside the valve body 301;

the input end of the second pipeline is located at the one side of the flexible body 304, and the output end of the second pipeline is connected with the needle outlet unit 400.

Preferably, a sealing element 303 is arranged around the connection between the input end of the first pipeline and the output end of the medium output device.

Preferably, the valve body 301 is provided with an injection port 302, and the injection port 302 is connected to the medium inlet and outlet.

Preferably, a one-way valve or a removably attached stopper is provided within the injection port 302.

Preferably, the needle discharging unit 400 includes a needle.

Preferably, the edge of the flexible body 304 is sealingly connected between the valve body 301 and the medium outlet device.

Preferably, the flexible body 304 deforms according to the pressure applied to the two sides;

when the medium output by the medium output device exceeds a preset flow rate, the pressure on the other side of the flexible body 304 is greater than the pressure on one side, so that the flexible body 304 deforms towards the one side and blocks the pipeline;

when the medium output by the medium output device does not exceed the preset flow rate, the flexible body 304 does not block the pipeline.

According to the invention, the microdose secretion pump comprises the safety valve component suitable for microdose infusion.

According to the invention, the insulin pump comprises the safety valve component suitable for micro-dose infusion.

Compared with the prior art, the invention has the following beneficial effects:

the invention can solve the problem that the speed of injecting the medium is too high in the process of failure of the medium output device, and under certain application conditions, such as insulin or medicament injection, the life danger can be caused by excessive injection.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic illustration of a normal rate infusion state;

FIG. 3 is a schematic illustration of an over-speed infusion condition.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1, the present invention provides a safety valve assembly 300 suitable for micro-dose infusion, which mainly comprises: a valve body 301, a flexible body 304 and a needle outlet unit 400. The valve body 301 is connected to the medium output apparatus, the flexible body 304 is connected between the valve body 301 and the medium output apparatus, and the needle discharge unit 400 is connected to the valve body 301. The needle discharging unit 400 includes a needle, which may be a metal needle or a flexible tube needle, and the present invention is not limited thereto. In the present invention, the flexible body 304 may include a film, and the material of the film may be elastic material such as silicone.

The cylinder body 112 of the medium output device is provided with a medium inlet and outlet 305 and a flexible body driving port 306, a first pipeline is arranged in the valve body 301, the input end of the first pipeline is connected with the medium inlet and outlet 305, the output end of the first pipeline is positioned at one side of the flexible body 304, and the flexible body driving port 306 is positioned at the other side of the flexible body 304. The sectional area of the medium inlet and outlet is smaller than that of the flexible body driving port.

A second pipeline is further arranged inside the valve body 301, an input end of the second pipeline is located at one side of the flexible body 304, and an output end of the second pipeline is connected with the needle outlet unit 400.

The working principle of the invention is as follows:

as shown in fig. 2, when the medium output from the medium output device is below the preset flow rate, the medium enters the first pipeline through the medium inlet/outlet 305, then enters the one side of the flexible body 304, and presses the flexible body from left to right. While media entering the flexible body drive port 306 presses the flexible body from right to left. At this time, the flexible body is not deformed substantially, or the deformation is very small, and the medium output from the medium inlet/outlet 305 can be output through the second pipeline normally.

As shown in fig. 3, when the flow rate of the medium output from the medium output device suddenly increases to exceed the preset flow rate, because the sectional area of the flexible body driving port 306 on the right side of the flexible body 304 is larger than the sectional area of the medium inlet/outlet, the pressure on the right side of the flexible body is larger than the pressure on the left side of the flexible body, so that the flexible body deforms to the left, and the whole flexible body is attached to the valve body 301 to block the output end of the first pipeline and the input end of the second pipeline, so that the medium in the first pipeline cannot be output or output at a reduced speed, and the purpose of protecting the life safety of a user is achieved.

In order to increase the sealing effect of the whole assembly, a sealing element 303 is arranged around the joint of the input end of the first pipeline and the output end of the medium output device, and the edge position of the flexible body 304 is connected between the valve body 301 and the medium output device in a sealing mode.

After the safety valve assembly is installed, the cylinder body 112 is difficult to directly suck the medium to be infused from the outside, so the valve body 301 is provided with the injection port 302, the injection port 302 is connected with a medium inlet and outlet, the injection port 302 is internally provided with a one-way valve or can be detachably connected with a blocking piece, and the required medium is infused into the cylinder body 112 through the injection port 302.

The present invention can be applied to a microdose secretion pump for microdose infusion, such as an insulin pump.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.