CN114041787B - Noninvasive blood glucose monitoring device and wearable noninvasive blood glucose meter - Google Patents

Abstract

The invention discloses a non-invasive blood glucose monitoring device and a wearable non-invasive blood glucose meter. The non-invasive blood glucose monitoring device includes a suction nozzle for collecting body fluids, an electronic detection module installed inside the suction nozzle for detecting the blood sugar level of the body fluids and a The suction nozzle provides a negative pressure pump with negative pressure; the suction nozzle and the negative pressure pump are connected through an air conduit; the negative pressure pump includes a negative pressure stepper motor, a triangular rotor and a pump chamber; the triangular rotor It is driven and connected to the negative pressure stepper motor through an eccentric shaft; the pump chamber is composed of two symmetrical chambers; the triangular rotor divides one of the chambers into a positive pressure area during rotation and a negative pressure area; the negative pressure area is connected with the suction nozzle to provide negative pressure for the suction nozzle.

Description

A non-invasive blood glucose monitoring device and a wearable non-invasive blood glucose meter

Technical field

The present invention relates to the technical field of medical devices, and in particular to a non-invasive blood glucose monitoring device and a wearable non-invasive blood glucose meter.

Background technique

With the development of society, diabetes has gradually become a major killer threatening human health. Blood glucose monitoring is an important task in daily diabetes care.

Traditional blood glucose monitoring instruments use a disposable blood collection needle to pierce the skin, then dip the blood into the test paper, and detect it through a certain detection device to obtain the blood glucose value at a certain moment.

Traditional blood glucose monitoring instruments include the following:

1. Invasive blood collection increases the patient’s pain and carries the risk of blood infection;

2. Intelligently obtain the blood sugar value at a certain moment, and it is impossible to monitor the blood sugar value in real time, which is not conducive to observing the changing pattern of blood sugar;

3. Inconvenient to carry.

Contents of the invention

The purpose of the present invention is to provide a non-invasive blood glucose monitoring device in view of the technical defects of traditional blood glucose monitoring instruments.

Another object of the present invention is to provide a wearable non-invasive blood glucose meter.

The technical solutions adopted to achieve the purpose of the present invention are:

A non-invasive blood glucose monitoring device, including a suction nozzle for collecting body fluids, an electronic detection module installed inside the suction nozzle for detecting the blood glucose level of the body fluid, and a negative pressure pump that provides negative pressure for the suction nozzle; the suction nozzle The mouth and the negative pressure pump are connected through an air conduit;

The negative pressure pump includes a negative pressure stepper motor, a triangular rotor and a pump chamber; the triangular rotor and the negative pressure stepper motor are driven and connected through an eccentric shaft; the pump chamber consists of two symmetrical chambers Composition; the triangular rotor divides one of the chambers into a positive pressure area and a negative pressure area during rotation; the negative pressure area is connected with the suction nozzle to provide negative pressure for the suction nozzle.

In the above technical solution, the suction nozzle includes a bellmouth-shaped collection area in contact with the skin, a detection area for accommodating the electronic detection module, and a joint area connected to the air guide tube.

In the above technical solution, the number of the suction nozzles is four, and an electronic detection module is installed in each of the suction nozzles.

In the above technical solution, the four suction nozzles and the negative pressure pump are selectively connected through a conduction selector.

In the above technical solution, the conduction selector includes an annular first body and a second body driven to rotate by a stepper motor; the first body is connected to four suction nozzles through four airway branch pipes; The second body is an L-shaped elbow, and the upper opening of the second body is rotationally connected to the main pipe of the air guide; the lower opening of the second body is selectively connected to a certain suction nozzle when rotating.

Another aspect of the present invention is the application of the above-mentioned non-invasive blood glucose monitoring device in medical equipment.

Another aspect of the present invention is a wearable non-invasive blood glucose meter, including a housing, an electronic screen, a wearable part and the above-mentioned non-invasive blood glucose monitoring device.

In the above technical solution, the lower surface of the housing is provided with a groove for installing the suction nozzle; the inner wall of the groove is provided with an annular protrusion; the outer wall of the suction nozzle is equipped with a rubber ring; when the suction nozzle When inserted into the groove, the rubber ring seals and engages with the annular protrusion.

In the above technical solution, an annular pole piece is installed on the upper inner wall of the groove; an ejector electrode is installed above the suction nozzle; after the suction nozzle is inserted into the groove, the ejector electrode and the annular pole piece Contact electrical connection.

In the above technical solution, the wearing piece is a strap; a coil spring is installed inside the shell, one end of the strap is fixed on the shell, the other end is fixed on the coil spring and is wound or placed under the action of the coil spring Open to adjust the exposed length of the strap.

Compared with the prior art, the beneficial effects of the present invention are:

1. The non-invasive blood glucose monitoring device provided by the present invention uses body fluids for detection, avoiding the blood collection process and reducing the patient's pain.

2. The non-invasive blood sugar monitoring device provided by the present invention is equipped with multiple suction nozzles, which enables multiple blood sugar detections and meets monitoring requirements.

3. The wearable non-invasive blood glucose meter provided by the present invention is easy to wear and suitable for patients' home care.

Description of the drawings

Figure 1 shows the structural diagram of a wearable non-invasive blood glucose meter;

Figure 2 shows a schematic diagram of the distribution of four suction nozzles;

Figure 3 shows the structural diagram of the conduction selector;

Figure 4 shows the structural diagram of the negative pressure pump;

Figure 5 shows the structural diagram of the negative pressure pump;

Figure 6 shows the structural diagram of the suction nozzle;

Figure 7 shows a schematic diagram of the mechanism of the housing;

Figure 8 shows a schematic diagram of the installation of the nozzle and shell;

In the picture: 1-suction nozzle, 1-1-collection area, 1-2-detection area, 1-3-connector area, 2-electronic detection module, 3-negative pressure pump, 3-1-negative pressure stepper motor , 3-2-triangular rotor, 3-3-pump chamber, 3-4-eccentric shaft, 3-5-exhaust hole, 3-6-air inlet hole, 3-7-air inlet pipe, 4-air guide pipe, 4-1-Air tube branch, 4-2-Air tube main pipe, 5-Conduction selector, 5-1-First body, 5-2-Second body, 6-Stepper motor, 7-Shell, 7 -1-upper surface, 7-2-groove, 7-3-first base, 7-4-second base, 8-electronic screen, 9-strap, 10-coil spring, 11-roller, 12 -Ring pole piece, 13-spring base, 14-ejector electrode, 15-annular protrusion, 16-rubber ring,

a-positive pressure area, b-negative pressure area.

Detailed ways

The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

Example 1

A non-invasive blood glucose monitoring device, as shown in Figure 1, includes a suction nozzle 1 that can be attached to the skin for collecting body fluids, an electronic detection module 2 installed inside the suction nozzle 1 for detecting the blood sugar level of the body fluids, and a The suction nozzle 1 provides a negative pressure pump 3 for negative pressure; the suction nozzle 1 and the negative pressure pump 3 are connected through an air guide tube 4 .

After the negative pressure pump 3 is turned on, it provides negative pressure to the suction nozzle 1. The suction nozzle 1 absorbs the body fluid on the skin surface under the action of negative pressure. After the body fluid immerses the electronic detection module 2, the electronic detection module 2 outputs an electrical signal to detect the blood glucose level. The entire testing process is non-invasive.

Specifically, as shown in Figure 6, the suction nozzle 1 includes a bellmouth-shaped collection area 1-1 in contact with the skin, a detection area 1-2 for accommodating the electronic detection module 2, and a detection area connected to the air guide tube 4. Joint area 1-3;

In order to meet the purpose of multiple testing of patients, the number of suction nozzles 1 in this embodiment is four, and each suction nozzle 1 is equipped with an electronic detection module 2 . Alternatively, the number of suction nozzles 1 can also be appropriately adjusted according to monitoring needs.

As shown in Figures 2 and 3, the four suction nozzles 1 and the negative pressure pump 3 are selectively connected through a conduction selector 5; the conduction selector 5 includes an annular first body 5 -1 and a rotatable second body 5-2; four holes are provided on the annular side wall of the first body 5-1, each hole is connected to an airway branch 4-1, and the first The body 5-1 is connected to the four suction nozzles 1 through four holes and four airway branch pipes 4-1; the second body 5-2 is an L-shaped elbow, and the upper part of the second body 5-2 is open It is rotatably connected to the main air pipe 4-2 through the roller 11; when the lower opening of the second body 5-2 rotates, it docks with a certain hole on the annular side wall of the first body 5-1 to achieve conduction selection. The device 5 is selectively connected to a certain suction nozzle 1. The first body 5-1 and the second body 5-2 maintain a sealed connection during rotation.

In order to realize automatic switching of the four suction nozzles 1, the second body 5-2 is driven by the stepper motor 6. Driven by the stepper motor 6, the second body 5-2 rotates to a specific position, and its lower opening is connected to the airway branch pipe 4-1 at this position. The entire driving process is controlled by the electronic control module.

Example 2

This embodiment introduces the detailed structure of the negative pressure pump based on Embodiment 1.

As shown in Figure 4 and Figure 5, the negative pressure pump 3 includes a negative pressure stepper motor 3-1, a triangular rotor 3-2 and a pump chamber 3-3; the triangular rotor 3-2 and the negative pressure stepper The inlet motor 3-1 is driven and connected by an eccentric shaft 3-4; the pump chamber 3-3 is composed of two symmetrical chambers; the triangular rotor 3-2 rotates one of the chambers during rotation The room is divided into positive pressure area a and negative pressure area b. For example, when the negative pressure stepper motor outputs torque, the eccentric shaft 3-4 drives the triangular rotor 3-2 to rotate clockwise, causing positive pressure to be generated above the left chamber to become the positive pressure area a, and negative pressure to be generated below the left chamber. Becomes negative pressure area b.

The positive pressure area a is provided with an exhaust hole 3-5; the negative pressure area b is provided with an air inlet hole 3-6; there is a passage between the air inlet hole 3-6 and the main air pipe 4-2 The intake pipes 3-7 are connected.

Driven by the negative pressure stepper motor, the triangular rotor 3-2 rotates, dividing one of the chambers into a positive pressure area a and a negative pressure area b. The negative pressure area b is connected to the suction nozzle 1 through the air inlet hole 3-6, the air inlet pipe 3-7, the air pipe main pipe 4-2, and the air pipe branch pipe 4-1, and the suction nozzle 1 reaches a negative pressure state. When the detection is completed, the negative pressure stepper motor 3-1 rotates counterclockwise, and the original positive pressure area a becomes negative pressure, absorbing air through the exhaust hole 3-5; the negative pressure area b and its connected suction nozzle 1 recover Air pressure equilibrium state.

Example 3

A wearable non-invasive blood glucose meter, as shown in Figure 1, includes a housing 7, an electronic screen 8, a strap 9 and a non-invasive blood glucose monitoring device as described in Embodiment 1 or 2; the non-invasive blood glucose monitoring device is installed in the housing 7 Inside, the collection area 1-1 of the suction nozzle 1 is located outside the housing 7; the electronic screen 8 is installed on the outer surface of the housing 7.

As shown in Figure 7, the housing 7 has a flat upper surface 7-1 for mounting the electronic screen 8; its lower surface is provided with four grooves 7-2 for mounting the suction nozzle 1;

As shown in Figure 8, an annular protrusion 15 is provided on the inner wall of each groove 7-2; a rubber ring 16 is installed on the outer wall of the suction nozzle 1; during installation, the suction nozzle 1 is inserted into the groove 7-2, the rubber ring 16 and the annular protrusion 15 are sealed and engaged. A circular pole piece 12 is installed on the upper inner wall of each groove 7-2; two ejector electrodes 14 are installed above the suction nozzle 1 through two spring bases 13. After the suction nozzle 1 is inserted into the groove 7-2, the ejector electrode 14 is in contact and electrically connected with the annular pole piece 12, and is further electrically connected to the electronic screen 8 installed on the housing, and the measurement results are displayed on the electronic screen 8. The spring base 13 provides an upward driving force to the ejector electrode 14 to ensure that the ejector electrode 14 is in close contact with the annular pole piece 12 to prevent virtual connection.

The cavity of the housing 7 is also provided with a first base 7-3 and a second base 7-4; the negative pressure stepper motor 3-1 is installed on the first base 7-3; the stepper motor 6 is installed on the first base 7-3. On the second base 7-4.

A coil spring 10 is installed inside the housing 7. One end of the strap 9 is fixed on the housing 7 and the other end is fixed on the coil spring 10. The strap 9 is wound or released under the action of the coil spring 10 to adjust the strap 9. The exposed length makes it easy to wear.

The above are only preferred embodiments of the present invention. It should be noted that those skilled in the art can also make several improvements and modifications without departing from the principles of the present invention. These improvements and Retouching should also be considered within the scope of the present invention.

Claims (6)

1. A non-invasive blood glucose monitoring device, characterized in that: the device comprises a suction nozzle for collecting body fluid, an electronic detection module arranged in the suction nozzle and used for detecting the blood glucose value of the body fluid, and a negative pressure pump for providing negative pressure for the suction nozzle; the suction nozzle is communicated with the negative pressure pump through an air duct;

the negative pressure pump comprises a negative pressure stepping motor, a triangular rotor and a pump cavity; the triangular rotor is in driving connection with the negative pressure stepping motor through an eccentric shaft; the pump cavity consists of two chambers which are bilaterally symmetrical; the triangular rotor divides one of the chambers into a positive pressure area and a negative pressure area in the rotating process; the negative pressure area is communicated with the suction nozzle to provide negative pressure for the suction nozzle;

the suction nozzle comprises a horn-shaped collecting area contacted with skin, a detection area for accommodating an electronic detection module and a joint area connected with the air duct; the number of the suction nozzles is four, and an electronic detection module is arranged in each suction nozzle; the four suction nozzles are selectively communicated with the negative pressure pump through a communication selector;

the conduction selector comprises an annular first body and a second body driven to rotate by a stepping motor; the first body is communicated with the four suction nozzles through four air duct branch pipes; the second body is an L-shaped bent pipe, and an upper opening of the second body is rotationally connected with the main pipe of the airway; the lower opening of the second body is selectively communicated with a suction nozzle when rotating.

2. Use of the non-invasive blood glucose monitoring apparatus of claim 1 in a medical device.

3. A wearable noninvasive glucometer, characterized in that: comprising a housing, an electronic screen, a wearing part and the non-invasive blood glucose monitoring apparatus of claim 1.

4. The wearable noninvasive glucose meter of claim 3, wherein: the lower surface of the shell is provided with a groove for installing a suction nozzle; an annular bulge is arranged on the inner wall of the groove; a rubber ring is arranged on the outer wall of the suction nozzle; when the suction nozzle is inserted into the groove, the rubber ring is in sealing clamping with the annular bulge.

5. The wearable noninvasive glucose meter of claim 4, wherein: a circular ring pole piece is arranged on the upper Fang Nabi of the groove; a thimble electrode is arranged above the suction nozzle; after the suction nozzle is inserted into the groove, the thimble electrode is in contact electrical connection with the circular ring pole piece.

6. The wearable noninvasive glucose meter of claim 5, wherein: the wearing piece is a binding band; the shell internally mounted has coil spring, bandage one end is fixed on the shell, and the other end is fixed on coil spring and twines or releases under coil spring's effect to adjust the naked length of bandage.