Noninvasive blood glucose monitoring device and wearable noninvasive blood glucose meterTechnical Field
The invention relates to the technical field of medical equipment, in particular to a noninvasive blood glucose monitoring device and a wearable noninvasive blood glucose meter.
Background
With the development of society, diabetes is becoming a large killer threatening human health. Blood glucose monitoring is an important task in the routine maintenance of diabetes.
The traditional blood glucose monitoring instrument is characterized in that the skin is punctured through a disposable blood taking needle, then blood drops are soaked in test paper, and the blood glucose is detected through a certain detection device, so that the blood glucose value at a certain moment is obtained.
The traditional blood glucose monitoring instrument has the following steps:
1. the invasive blood sampling increases the pain of the patient and has the risk of blood infection;
2. the blood glucose value at a certain moment is intelligently obtained, the blood glucose value cannot be monitored in real time, and the change rule of the blood sandalwood cannot be observed;
3. is inconvenient to carry.
Disclosure of Invention
The invention aims at overcoming the technical defects of the traditional blood glucose monitoring instrument and provides a noninvasive blood glucose monitoring device.
It is another object of the present invention to provide a wearable noninvasive glucose meter.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a noninvasive blood glucose monitoring device comprises a suction nozzle for collecting body fluid, an electronic detection module arranged inside 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 region is communicated with the suction nozzle to provide negative pressure for the suction nozzle.
In the above technical solution, the suction nozzle includes a bell mouth-shaped collection area in contact with the skin, a detection area for accommodating the electronic detection module, and a joint area connected with the air duct.
In the above technical solution, the number of the suction nozzles is four, and each suction nozzle is internally provided with an electronic detection module.
In the technical scheme, four suction nozzles are selectively communicated with the negative pressure pump through the communication selector.
In the above technical solution, the on selector includes a first annular body and a second body driven to rotate by a stepper 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.
In another aspect of the invention, the use of a non-invasive blood glucose monitoring device as described above in a medical device.
In another aspect of the invention, a wearable noninvasive glucose meter includes a housing, an electronic screen, a wearable piece, and the noninvasive glucose monitoring device described above.
In the technical scheme, the lower surface of the shell is provided with a groove for installing the 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 and the annular bulge seal the clamp.
In the above technical scheme, the upper Fang Nabi of the groove is provided with a circular ring pole piece; 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.
In the above technical solution, the wearing part 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.
Compared with the prior art, the invention has the beneficial effects that:
1. the noninvasive blood glucose monitoring device provided by the invention adopts body fluid for detection, so that the blood sampling process is avoided, and the pain of a patient is reduced.
2. The noninvasive blood glucose monitoring device provided by the invention is provided with the plurality of suction nozzles, so that the blood glucose is detected for a plurality of times, and the monitoring requirement is met.
3. The wearable noninvasive glucometer provided by the invention is convenient to wear and is suitable for home maintenance of patients.
Drawings
Fig. 1 is a schematic diagram of a wearable noninvasive glucometer;
FIG. 2 is a schematic diagram showing the distribution of four nozzles;
FIG. 3 is a schematic diagram of a turn-on selector;
FIG. 4 is a schematic view showing the structure of a negative pressure pump;
FIG. 5 is a schematic view showing the structure of a negative pressure pump;
FIG. 6 is a schematic view of a suction nozzle;
FIG. 7 is a schematic view of the mechanism of the housing;
FIG. 8 is a schematic view of the mounting of the suction nozzle to the housing;
in the figure: 1-suction nozzle, 1-collecting area, 1-2-detecting area, 1-3-joint area, 2-electronic detecting module, 3-negative pressure pump, 3-1-negative pressure stepping motor, 3-2-triangle rotor, 3-3-pump cavity, 3-4-eccentric shaft, 3-5-exhaust hole, 3-6-air inlet hole, 3-7-air inlet pipe, 4-air pipe, 4-1-air pipe branch pipe, 4-2-air pipe main pipe, 5-on selector, 5-1-first body, 5-2-second body, 6-stepping motor, 7-housing, 7-1-upper surface, 7-2-groove, 7-3-first base, 7-4-second base, 8-electronic screen, 9-binding band, 10-coil spring, 11-roller, 12-ring pole piece, 13-spring base, 14-electrode, 15-ring protrusion, 16-rubber ring,
a positive pressure region and b negative pressure region.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
A noninvasive blood glucose monitoring device, as shown in fig. 1, comprises a suction nozzle 1 which can be attached to the skin for collecting body fluid, an electronic detection module 2 which is arranged inside the suction nozzle 1 and is used for detecting the blood glucose value of the body fluid, and a negative pressure pump 3 which provides negative pressure for the suction nozzle 1; the suction nozzle 1 is communicated with the negative pressure pump 3 through an air duct 4.
After the negative pressure pump 3 is started, negative pressure is provided for the suction nozzle 1, the suction nozzle 1 sucks body fluid on the surface of the skin under the action of the negative pressure, and after the body fluid submerges the electronic detection module 2, the electronic detection module 2 outputs an electric signal to realize the detection of the blood sugar level. The whole detection process is noninvasive detection.
Specifically, as shown in fig. 6, the suction nozzle 1 comprises a horn-shaped collecting area 1-1 contacted with skin, a detection area 1-2 for accommodating an electronic detection module 2, and a joint area 1-3 connected with an air duct 4;
for the purpose of satisfying the multiple detection of the patient, the number of the suction nozzles 1 in this embodiment is four, and each suction nozzle 1 is internally provided with an electronic detection module 2. Alternatively, the number of the suction nozzles 1 may be appropriately adjusted according to the monitoring needs.
As shown in fig. 2 and 3, four suction nozzles 1 are selectively connected with the negative pressure pump 3 through a connection selector 5; the conduction selector 5 includes a first body 5-1 in a ring shape and a second body 5-2 in a rotatable manner; four holes are formed in the annular side wall of the first body 5-1, each hole is communicated with one air duct branch pipe 4-1, and the first body 5-1 is communicated with four suction nozzles 1 through the four holes and the four air duct branch pipes 4-1; the second body 5-2 is an L-shaped bent pipe, and an upper opening of the second body 5-2 is rotationally connected with the main airway tube 4-2 through a roller 11; the lower opening of the second body 5-2 is in butt joint with a certain hole on the annular side wall of the first body 5-1 when rotating, so that the selective communication between the conduction selector 5 and a certain suction nozzle 1 is realized. The first body 5-1 and the second body 5-2 remain in a closed connection during rotation.
To achieve automatic switching of the four suction nozzles 1, the second body 5-2 is driven by a stepper motor 6. The second body 5-2 is rotated to a specific position by the driving of the stepping motor 6, and the lower opening thereof is communicated with the airway tube 4-1 at the position. The whole driving process is controlled by an electronic control module.
Example 2
This embodiment describes the detailed structure of the negative pressure pump based on embodiment 1.
The negative pressure pump 3 is shown in fig. 4 and 5, and comprises a negative pressure stepping motor 3-1, a triangular rotor 3-2 and a pump cavity 3-3; the triangular rotor 3-2 is in driving connection with the negative pressure stepping motor 3-1 through an eccentric shaft 3-4; the pump cavity 3-3 consists of two chambers which are bilaterally symmetrical; the delta-rotor 3-2 divides one of the chambers into a positive pressure region a and a negative pressure region b during rotation. For example, when the negative pressure stepping motor outputs torque, the eccentric shaft 3-4 drives the triangular rotor 3-2 to rotate clockwise, so that positive pressure is generated above the left chamber to be a positive pressure area a, and negative pressure is generated below the left chamber to be a negative pressure area b.
The positive pressure area a is provided with exhaust holes 3-5; the negative pressure region b is provided with air inlets 3-6; the air inlet hole 3-6 is communicated with the main air duct pipe 4-2 through an air inlet pipe 3-7.
The triangular rotor 3-2 rotates under the drive of the negative pressure stepping motor to divide one of the chambers into a positive pressure region a and a negative pressure region b. The negative pressure region b is communicated with the suction nozzle 1 through the air inlet hole 3-6, the air inlet pipe 3-7, the air duct main pipe 4-2 and the air duct branch pipe 4-1 in sequence, and the suction nozzle 1 achieves a negative pressure state. When the detection is completed, the negative pressure stepping motor 3-1 rotates anticlockwise, the original positive pressure area a is changed into negative pressure, and air is absorbed through the exhaust hole 3-5; the negative pressure region b and the suction nozzle 1 connected thereto restore the air pressure balance state.
Example 3
A wearable noninvasive blood glucose meter, as shown in fig. 1, comprising a housing 7, an electronic screen 8, a strap 9, and a noninvasive blood glucose monitoring device as described in example 1 or 2; the noninvasive blood glucose monitoring device is arranged inside the shell 7, wherein the collecting area 1-1 of the suction nozzle 1 is positioned outside the shell 7; the electronic screen 8 is mounted on the outer surface of the housing 7.
The upper surface 7-1 of the housing 7 is a plane for mounting an electronic screen 8 as shown in fig. 7; the lower surface of the suction nozzle is provided with four grooves 7-2 for installing the suction nozzle 1;
as shown in fig. 8, an annular protrusion 15 is provided on the inner wall of each of the grooves 7-2; a rubber ring 16 is arranged on the outer wall of the suction nozzle 1; when the suction nozzle 1 is installed, the suction nozzle is inserted into the groove 7-2, and the rubber ring 16 is in sealing engagement with the annular bulge 15. The upper Fang Nabi of each groove 7-2 is provided with a circular ring pole piece 12; two thimble electrodes 14 are arranged above the suction nozzle 1 through two spring bases 13. After the suction nozzle 1 is inserted into the groove 7-2, the thimble electrode 14 is in contact electrical connection with the circular ring pole piece 12, thereby being further electrically connected with the electronic screen 8 mounted on the housing, and the measurement result is displayed through the electronic screen 8. The spring base 13 applies upward driving force to the thimble electrode 14 to ensure that the thimble electrode 14 is in close contact with the circular ring pole piece 12, and virtual connection is prevented.
A first base 7-3 and a second base 7-4 are also arranged in the cavity of the shell 7; wherein the negative pressure stepping motor 3-1 is arranged on the first base 7-3; the stepper motor 6 is mounted on the second base 7-4.
The shell 7 internally provided with a coil spring 10, one end of the binding band 9 is fixed on the shell 7, and the other end is fixed on the coil spring 10 and is wound or released under the action of the coil spring 10 so as to adjust the exposed length of the binding band 9, thereby being convenient for wearing.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.