CN215227656U

CN215227656U - Sensor with a sensor element

Info

Publication number: CN215227656U
Application number: CN202121442340.1U
Authority: CN
Inventors: 钱成
Original assignee: Diascience Medical Co Ltd
Current assignee: Diascience Medical Co Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-12-21
Anticipated expiration: 2031-06-28

Abstract

The utility model provides a sensor, which at least comprises a base and an electrode component arranged on the base, wherein the electrode component at least comprises a sensor electrode and an electrode seat; the sensor electrode is configured with a first end for implantation into the skin of a host and a second end pre-encapsulated in an electrode holder; the electrode holder is provided with a data output part, and the data output part is configured to be electrically connected with the second end part of the sensor electrode. The utility model discloses a sensor adopts the mode of pre-connection, can improve sensor electrode mechanical connection's fastness and electric connection's reliability to be favorable to in the inside reliability of examining electric connection of mill, improve the yields.

Description

Sensor with a sensor element

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to sensor suitable for continuous blood sugar monitoring system.

Background

Some physiological diseases, which have long disease course and prolonged disease duration, need to monitor some physiological parameters of the host in real time to better track the treatment. Such as diabetes, require real-time monitoring of the host blood glucose. Accurate blood sugar self-monitoring is a key for realizing good blood sugar control, is beneficial to evaluating the degree of glucose metabolism disorder of a diabetic patient, formulating a blood sugar reduction scheme, and simultaneously reflecting the blood sugar reduction treatment effect and guiding the adjustment of the treatment scheme.

Currently, most commercially available instruments refer to blood glucose meters, and patients need to collect finger peripheral blood by themselves to measure the blood glucose level at that moment. However, this method has the following drawbacks: firstly, the change of the blood sugar level between two measurements cannot be known, and the peak value and the valley value of the blood sugar can be missed by a patient, so that complications are caused, and irreversible damage is caused to the patient; secondly, the finger tip puncture blood sampling is carried out for a plurality of times every day, which causes great pain for the diabetic. In order to overcome the above-mentioned drawbacks, it is necessary to provide a method for continuously monitoring blood sugar of a patient, so that the patient can conveniently know the blood sugar status of the patient in real time, and take measures in time to effectively control the state of an illness and prevent complications, thereby achieving a high quality of life.

Aiming at the requirements, technical personnel develop a monitoring technology which can be implanted into subcutaneous tissues to continuously monitor subcutaneous blood sugar, the technology is characterized in that a sensor electrode is inserted into the subcutaneous tissues, the sensor electrode generates oxidation reaction between interstitial fluid of a patient and glucose in a body, an electric signal is formed during the reaction, the electric signal is converted into blood sugar reading through a transmitter, the blood sugar reading is transmitted to a wireless receiver every 1-5 minutes, corresponding blood sugar data are displayed on the wireless receiver, and a map is formed for the patient and a doctor to refer.

The sensor of the existing continuous blood sugar monitoring system, such as chinese utility model patent CN209252875U, discloses an applicator for applying a sensor on the skin to the skin of a subject, the structure of the sensor is represented by that a penetrating needle with a built-in sensor electrode penetrates the skin of the subject after penetrating the cannula through a sealing member with a conductive disc by presetting a cannula penetrating the sealing member and the conductive disc in the sealing member, so as to implant the sensor electrode part into the skin of the subject, then the sensor electrode is ejected out of the penetrating needle by a push rod, and the cannula is withdrawn from the sealing member, so that the sensor electrode part establishes an indwelling electrical connection with the conductive disc in the sealing member, and the sensor electrode is fixed by the sealing member and the guide disc. The sensor of this kind of structure, because the pipe diameter of intubate is greater than the diameter of sensor electrode, lead to the intubate from sealing member and electrically conductive disc back of withdrawing from, the meshing dynamics of sealing member and electrically conductive disc to the sensor electrode is less than the meshing dynamics to the intubate, has the hidden danger that sensor electrode and electrically conductive disc poor electrical contact and sensor electrode drop from the sealing member easily.

Disclosure of Invention

The present invention provides a sensor to solve the problem that the electrical connection of the existing sensor electrode is unreliable and easy to fall off.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows: a sensor comprising at least a sensor base and an electrode assembly disposed on the sensor base, the electrode assembly comprising at least a sensor electrode and an electrode holder;

the sensor electrode is configured with a first end for implantation into the skin of a host and a second end pre-encapsulated in an electrode holder;

the electrode holder is provided with a data output part, and the data output part is configured to be electrically connected with the second end part of the sensor electrode.

In the above technical solution, the upper surface of the sensor base is at least provided with an electrode mounting groove, and the electrode assembly is operatively coupled in the electrode mounting groove.

In the above technical solution, the electrode assembly is fastened to the bottom surface of the electrode mounting groove.

In the above technical solution, the upper surface of the sensor base is further provided with a battery module, the battery module is provided with a power supply portion, and the power supply portion is electrically connected to the battery.

In the above technical solution, the battery module includes a battery, a battery mounting groove configured on the upper surface of the sensor base, and a battery cover coupled to an opening of the battery mounting groove, and the battery cover encapsulates the battery in the battery mounting groove.

In the above technical solution, the power supply portion includes two power supply terminals disposed on an upper surface of the battery module, and the two power supply terminals are electrically connected to a positive electrode and a negative electrode of the battery, respectively.

In the above-described aspect, the upper surface of the battery module is further provided with a first seal ring, and the power supply terminal is defined in the first seal ring.

In the above technical scheme, an included angle between an extension line of the first end portion of the sensor electrode and an extension line of the second end portion is 30-60 °.

In the above technical solution, an included angle between an extension line of the first end portion and an extension line of the second end portion of the sensor electrode is 45 °.

In the above technical scheme, the electrode holder includes upper housing and lower housing, upper housing is coupled with lower housing to with the second tip centre gripping of sensor electrode between upper housing and lower housing.

In the above technical solution, the data output portion includes two electrode terminals disposed on the upper surface of the electrode holder, and the two electrode terminals are electrically connected to the working electrode and the reference electrode at the second end of the sensor electrode, respectively.

In the above technical solution, the second end of the sensor electrode is configured with two flexible conductive sheets insulated from each other, and the two flexible conductive sheets are respectively and electrically connected to the working electrode and the reference electrode at the second end of the sensor electrode;

the two flexible conducting strips are packaged in the electrode seat and are respectively electrically connected with the two electrode terminals.

In the technical scheme, the flexible conducting strip is made of conducting foam, and the second end of the sensor electrode is arranged in the conducting foam in a penetrating mode.

In the above technical solution, the upper surface of the electrode holder is further provided with a second sealing ring, and the electrode terminal is defined in the second sealing ring.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. the sensor electrode of the utility model adopts a pre-connection mode, is pre-packaged in the electrode seat and establishes electrical connection with the flexible conducting strip, so that the mechanical connection of the sensor electrode is firmer and the electrical connection is more reliable;

2. the utility model discloses a sensor electrode is through adopting the mode of pre-connection for sensor electrode can be in the inside detection of accomplishing the electric connection reliability of mill, is favorable to improving the yields.

Drawings

Fig. 1 is a schematic diagram of the continuous blood glucose monitoring system of the present invention.

Fig. 2 is a schematic diagram of the assembly of the sensor and transmitter of the present invention.

Fig. 3 is a cross-sectional view of the sensor and emitter assembly of the present invention.

Fig. 4 is a cross-sectional view of a sensor of the present invention.

Fig. 5 is a top view of the sensor of the present invention.

Fig. 6 is a sectional view of the electrode holder according to the present invention.

Fig. 7 is an exploded view of the electrode holder of the present invention.

Fig. 8 is an exploded view of the launcher of the present invention.

Wherein: 100. a host; 200. a sensor; 210. a sensor electrode; 211. a first end portion; 212. a second end portion; 220. a sensor base; 230. an adhesive patch; 240. a release layer; 250. an electrode mounting groove; 260. an electrode holder; 261. an upper housing; 262. a lower housing; 263. a flexible conductive sheet; 264. an electrode terminal; 265. a second seal ring; 270. a battery module; 271. a battery mounting groove; 272. a battery; 273. a battery cover; 274. a power supply terminal; 280. a first seal ring; 300. a receiver; 400. a transmitter; 410. a transmitter housing; 420. an integrated circuit module; 430. a data receiving terminal; 440. a power receiving terminal; 500. an implanter.

Detailed Description

The following description and examples detail certain exemplary embodiments of the disclosed invention. Those skilled in the art will recognize that there are numerous variations and modifications of the present invention encompassed by its scope. Thus, the description of a certain exemplary embodiment should not be taken as limiting the scope of the invention.

Continuous blood glucose monitoring system

Referring to FIG. 1, a schematic of a continuous blood glucose monitoring system attached to a host 100 is shown. A continuous blood glucose monitoring system including an on-skin sensor 200 is shown secured to the skin of a host 100 by a disposable sensor mount (not shown). The system comprises a sensor 200 and a transmitter 400 for transmitting blood glucose information monitored by the sensor 200 to a receiver 300, which receiver 300 may typically be a smart phone, a smart watch, a dedicated device and the like. In use, the sensor electrode 210 is partially positioned under the skin of the host 100, and the sensor electrode 210 is electrically connected to the transmitter 400. The emitter 400 is engaged with the sensor mount 220, and the sensor mount 220 is attached to the adhesive patch 230 and secured to the skin of the host 100 by the adhesive patch 230.

Sensor 200 may be attached to the skin of host 100 with an implanter 500, which implanter 500 is adapted to provide convenient and safe implantation procedures. Such an implanter 500 may also be used to insert the sensor electrodes 210 through the skin of the host 100. Once sensor electrode 210 has been inserted, implanter 500 is disconnected from sensor 200.

Sensor with a sensor element

Referring to fig. 2 to 5, there is shown a structure of a sensor including a disposable sensor mount 220, an electrode assembly disposed on the sensor mount 220, and a transmitter 400 coupled to the sensor mount 220, an adhesive patch 230 being attached to a lower surface of the sensor mount 220 and fixed to the skin of a host 100 by the adhesive patch 230. In one embodiment, the transmitter 400 is snap fit to the sensor mount 220.

In one embodiment, the adhesive patch 230 is pre-attached with a release layer 240, and when the sensor 200 is needed, the release layer 240 is removed and the sensor base 220 is attached to the skin of the host 100 through the adhesive patch 230.

With continued reference to fig. 4, the upper surface of the sensor base 220 is provided with an electrode mounting groove 250, and the electrode assembly is operatively coupled in the electrode mounting groove 250. Specifically, when the electrode assembly is in an initial state of implantation, the electrode assembly is separated from the sensor mount 220; when the electrode assembly is in an implantation completed state, the electrode assembly is coupled in the electrode mounting groove 250 of the sensor mount 220. In one embodiment, the coupling may be by snap-fit.

With continued reference to fig. 4, one end of the sensor electrode 210 passes through the sensor base 220 and is partially exposed out of the lower surface of the sensor base 220, and the other end is located in the sensor base 220, where one end of the sensor electrode 210 is defined as a first end 211 and the other end is defined as a second end 212, and under this condition, the first end 211 enters the skin of the host 100 to reach the subcutaneous interstitial fluid, and the fluid reacts with glucose in the body to generate an electrical signal. In one embodiment, referring to fig. 6 and 7, an electrode holder 260 is attached to the second end 212 of the sensor electrode 210, and it should be understood that the attachment is embodied that the electrode holder 260 includes an upper shell 261 and a lower shell 262, the upper shell 261 is coupled to the lower shell 262 and clamps the second end 212 of the sensor electrode 210 between the upper shell 261 and the lower shell 262, two flexible conductive sheets 263 are disposed in the electrode holder 260, the two flexible conductive sheets 263 are electrically connected to the working electrode and the reference electrode of the second end 212 of the sensor electrode 210, respectively, two electrode terminals 264 are disposed on the electrode holder 260, the two electrode terminals 264 are disposed on the upper shell 261 of the electrode holder 260 and electrically connected to the two flexible conductive sheets 263, respectively, and the sensor electrode 210 transmits the monitored blood glucose data to the transmitter 400 through the electrode terminals 264. It should be understood that the sensor electrode 210 in the present embodiment is pre-packaged in the electrode holder 260, that is, the second end 212 of the sensor electrode 210 and the two flexible conductive sheets 263 are pre-connected, and compared to the structure of the sensor 200 in the prior art, the flexible conductive sheet 263 in the present embodiment does not need to be penetrated by a cannula, so that the flexible conductive sheet 263 can be tightly wrapped on the sensor electrode 210, so that the sensor electrode 210 is firmly fixed and is not easy to fall off from the electrode holder 260, and the electrical connection between the sensor electrode 210 and the flexible conductive sheet 263 is more reliable. In addition, the sensor 200 having such a structure can be inspected for the reliability of electrical connection in a factory. Specifically, the first end 211 of the sensor electrode 210 is immersed in a glucose solution, and then the on/off between the two electrode terminals 264 is measured.

With continued reference to fig. 6 and 7, in one embodiment, a second sealing ring 265 is further disposed on the upper shell 261 of the electrode holder 260, and two electrode terminals 264 are defined in the second sealing ring 265, so that when the transmitter 400 is assembled on the sensor base 220 of the sensor 200, a sealed cavity is formed between the upper shell 261 of the electrode holder 260, the second sealing ring 265 and the lower surface of the transmitter 400, and the waterproof function is provided for the electrode terminals 264.

In one embodiment, the sensor electrode 210 is implanted obliquely, for example, the sensor electrode 210 is bent and fixed in the electrode holder 260, and specifically, an angle between an extension line of the first end 211 and an extension line of the second end 212 of the bent sensor electrode 210 is 30 to 60 °. Preferably, the included angle is 45 °. By adopting the implantation mode, the contact area of the sensor electrode 210 and the subcutaneous tissue interstitial fluid can be increased, and the stable detection of the sensor electrode 210 is more facilitated.

With continued reference to fig. 3 and 8, the transmitter 400 includes a transmitter housing 410 and an integrated circuit module 420 disposed within the transmitter housing 410, wherein the received blood glucose data is processed by the integrated circuit module 420 and wirelessly transmitted to the receiver 300. The lower surface of the transmitter housing 410 is provided with two data receiving terminals 430, the data receiving terminals 430 are electrically connected to the integrated circuit module 420 and serve as data input terminals of the integrated circuit module 420, and when the transmitter 400 is coupled to the sensor mount 220, the two data receiving terminals 430 are electrically connected to the two electrode terminals 264, respectively, to form a data transmission path.

With continued reference to fig. 4 and 8, the sensor 200 further includes a battery module 270 for supplying power to the integrated circuit module 420 of the transmitter 400, in one embodiment, the battery module 270 is disposed in the sensor base 220 and includes a battery mounting groove 271, a battery 272 embedded in the battery mounting groove 271, and a battery cover 273 disposed on the battery mounting groove 271 for enclosing the battery 272, two power supply terminals 274 are disposed on the battery mounting groove 271 at the edge of the battery cover 273, the two power supply terminals 274 are electrically connected to the positive electrode and the negative electrode of the battery 272, respectively, the battery 272 outputs power through the two power supply terminals 274, correspondingly, two power receiving terminals 440 are disposed on the lower surface of the transmitter housing 410, the power receiving terminals 440 are electrically connected to the integrated circuit module 420 and serve as power input terminals of the integrated circuit module 420, when the transmitter 400 is coupled to the sensor base 220, the two power receiving terminals 440 are electrically connected to the two power supply terminals 274, respectively, to form an electric power supply path.

With continued reference to fig. 3, in one embodiment, the upper surface of the battery 272 module 270 is further configured with a first sealing ring 280, and two power supply terminals 274 are defined in the first sealing ring 280. So that when the transmitter 400 is assembled to the sensor base 220 of the sensor 200, a sealed cavity is formed between the battery cover 273, the first sealing ring 280 and the lower surface of the transmitter 400, which acts as a waterproof for the power supply terminal 274.

The foregoing description, in terms of such full, clear, concise and exact terms, provides the best mode contemplated for carrying out the invention, and the manner and process of making and using it, to enable any person skilled in the art to which it pertains, to make and use the same. The invention is, however, susceptible to modifications and alternative constructions from that described above which are fully equivalent. Therefore, the invention is not to be limited to the specific embodiments disclosed. Rather, the invention covers all modifications and alternative constructions coming within the spirit and scope of the invention as generally expressed by the following claims, which particularly point out and distinctly define the subject matter of the invention. While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative and not restrictive.

Unless otherwise defined, all terms (including technical and scientific terms) are to be given their ordinary and customary meaning to those skilled in the art, and are not to be taken as limiting to a specific or special meaning unless expressly defined herein. It should be noted that the use of particular terminology when describing certain features or aspects of the disclosure should not be taken to imply that the terminology is being redefined herein to be restricted to including any specific characteristics or aspects of the disclosure with which that terminology is associated. The terms and phrases used in this application, and variations thereof, particularly in the appended claims, should be construed to be open ended and not limiting unless otherwise expressly stated. As an example of the foregoing, the term "including" shall mean "including but not limited to" or the like.

Furthermore, although the foregoing has been described in some detail by way of illustration and example for purposes of clarity and understanding, it will be apparent to those of ordinary skill in the art that certain changes and modifications may be practiced. Therefore, the description and examples should not be construed as limiting the scope of the invention to the particular embodiments and examples described herein, but rather to cover all modifications and alternatives falling within the true scope and spirit of the invention.

Claims

1. A sensor comprising at least a sensor base and an electrode assembly disposed on the sensor base, wherein: the electrode assembly comprises at least a sensor electrode and an electrode holder;

2. The sensor of claim 1, wherein: an upper surface of the sensor base is provided with at least an electrode mounting groove in which the electrode assembly is operatively coupled.

3. The sensor of claim 2, wherein: the electrode assembly is fastened to the bottom surface of the electrode mounting groove.

4. The sensor of claim 1, wherein: the upper surface of sensor base still disposes battery module, battery module disposes power supply portion, power supply portion electric connection is to the battery.

5. The sensor of claim 4, wherein: the battery module includes a battery, a battery mounting groove configured at an upper surface of the sensor base, and a battery cover coupled at an opening of the battery mounting groove, the battery cover enclosing the battery in the battery mounting groove.

6. The sensor of claim 4, wherein: the power supply part comprises two power supply terminals arranged on the upper surface of the battery module, and the two power supply terminals are respectively and electrically connected to the positive electrode and the negative electrode of the battery.

7. The sensor of claim 6, wherein: the upper surface of the battery module is further provided with a first sealing ring, and the power supply terminal is defined in the first sealing ring.

8. The sensor of claim 1, wherein: and the included angle between the extension line of the first end part and the extension line of the second end part of the sensor electrode is 30-60 degrees.

9. The sensor of claim 8, wherein: an included angle between an extension line of the first end portion and an extension line of the second end portion of the sensor electrode is 45 degrees.

10. The sensor of claim 1, wherein: the electrode holder includes an upper case and a lower case, the upper case is coupled to the lower case, and the second end of the sensor electrode is clamped between the upper case and the lower case.

11. The sensor of claim 1, wherein: the data output part comprises two electrode terminals arranged on the upper surface of the electrode seat, and the two electrode terminals are respectively and electrically connected to the working electrode and the reference electrode at the second end part of the sensor electrode.

12. The sensor of claim 11, wherein: the second end part of the sensor electrode is provided with two flexible conducting strips which are insulated with each other, and the two flexible conducting strips are respectively and electrically connected to the working electrode and the reference electrode at the second end part of the sensor electrode;

13. The sensor of claim 12, wherein: the flexible conducting strip is made of conductive foam, and the second end of the sensor electrode is arranged in the conductive foam in a penetrating mode.

14. The sensor of claim 11, wherein: the upper surface of the electrode holder is further provided with a second sealing ring, and the electrode terminal is defined in the second sealing ring.