CN216167443U - Sensor with a sensor element - Google Patents
Sensor with a sensor element Download PDFInfo
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- CN216167443U CN216167443U CN202122336766.5U CN202122336766U CN216167443U CN 216167443 U CN216167443 U CN 216167443U CN 202122336766 U CN202122336766 U CN 202122336766U CN 216167443 U CN216167443 U CN 216167443U
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Abstract
The utility model provides a sensor, which at least comprises a sensor base and an electrode assembly arranged on the sensor base, wherein the electrode assembly comprises a sensor electrode and an electrode base; the electrode holder comprises an upper shell and a lower shell, and the upper shell and the lower shell are assembled in a freely detachable mode; a first conductive part is attached to the lower surface of the upper shell, and a second conductive part is attached to the upper surface of the lower shell; one end of the first conductive part is electrically connected to a first electrode of the sensor electrode, and the other end of the first conductive part is provided with a first signal output terminal; one end of the second conductive part is electrically connected to the second electrode of the sensor electrode, and the other end of the second conductive part is provided with a second signal output terminal; the first signal output terminal and the second signal output terminal together constitute a signal output section configured to output a signal of the sensor electrode. The utility model can solve the problems of unreliable electrical connection and easy falling of the electrode of the existing sensor.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a sensor suitable for a continuous blood glucose 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 utility model aims to provide a sensor to solve the problems that the electrode of the existing sensor is unreliable in electrical connection and easy to fall off.
In order to achieve the purpose of the utility model, 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 a sensor electrode and an electrode holder;
the electrode holder comprises an upper shell and a lower shell;
a first conductive part is attached to the lower surface of the upper shell, and a second conductive part is attached to the upper surface of the lower shell;
one end of the first conductive part is electrically connected to a first electrode of the sensor electrode, and the other end of the first conductive part is provided with a first signal output terminal;
one end of the second conductive part is electrically connected to the second electrode of the sensor electrode, and the other end of the second conductive part is provided with a second signal output terminal;
the first signal output terminal and the second signal output terminal together constitute a signal output section configured to output a signal of the sensor electrode.
In the above aspect, the electrode assembly is detachably disposed on the sensor base.
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 scheme, the upper shell is buckled on the lower shell.
In the above technical solution, the first conductive part and the second conductive part are flexible conductive sheets.
In the technical scheme, the flexible conducting strip is made of conducting foam, and the sensor electrode is arranged in the conducting foam in a penetrating mode.
In the above technical scheme, the upper shell is provided with a first through hole for the first signal output terminal to extend out and a second through hole for the second signal output terminal to extend out.
In the above technical solution, the first signal output terminal and the second signal output terminal are conductive rubber contacts.
In the above technical solution, a seal ring is disposed on an upper surface of the upper housing, and the signal output portion is defined in the seal ring.
The utility model also provides another sensor, which at least comprises a sensor base and an electrode assembly arranged on the sensor base, wherein the electrode assembly comprises a sensor electrode and an electrode base;
the electrode holder comprises an upper shell and a lower shell, and the upper shell and the lower shell are assembled in a freely detachable mode;
a first conductive part is attached to the lower surface of the upper shell, and a second conductive part is attached to the upper surface of the lower shell;
one end of the first conductive part is electrically connected to a first electrode of the sensor electrode, and the other end of the first conductive part is provided with a first signal output terminal;
one end of the second conductive part is electrically connected to the second electrode of the sensor electrode, and the other end of the second conductive part is provided with a second signal output terminal;
the first signal output terminal and the second signal output terminal together constitute a signal output section configured to output a signal of the sensor electrode;
and the middle point of a connecting line of the central point of the first signal output terminal and the central point of the second signal output terminal is positioned on the extending path of the sensor electrode.
The present invention also provides another sensor, at least including a sensor base and an electrode assembly disposed on the sensor base, wherein: the electrode assembly comprises a sensor electrode and an electrode holder;
the electrode holder comprises an upper shell and a lower shell, and the upper shell and the lower shell are assembled in a freely detachable mode;
a first conductive part is attached to the lower surface of the upper shell, and a second conductive part is attached to the upper surface of the lower shell;
one end of the first conductive part is electrically connected to a first electrode of the sensor electrode, and the other end of the first conductive part is provided with a first signal output terminal;
one end of the second conductive part is electrically connected to the second electrode of the sensor electrode, and the other end of the second conductive part is provided with a second signal output terminal;
the first signal output terminal and the second signal output terminal together constitute a signal output section configured to output a signal of the sensor electrode;
the center point of the first signal output terminal and the center point of the second signal output terminal are both located on the extending path of the sensor electrode.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the two electrodes of the sensor electrode are respectively pre-connected to the two conductive parts, and the two conductive parts are respectively electrically connected to the two signal output terminals of the signal output part to output the signals of the sensor electrode, so that the mounting firmness of the sensor electrode is improved while the signal transmission of the sensor electrode is realized, and the sensor electrode is prevented from falling off;
2. the utility model can reduce the bending processing of the sensor electrode by limiting the layout mode of the signal output terminal, thereby preventing the sensor electrode from being damaged and affecting the reliability.
Drawings
FIG. 1 is a schematic diagram of a continuous blood glucose monitoring system of the present invention.
Fig. 2 is a schematic view of a sensor and transmitter assembly of the present invention.
Fig. 3 is a cross-sectional view of the sensor of the present invention assembled with a transmitter.
Fig. 4 is a cross-sectional view of a sensor of the present invention.
Fig. 5 is a top view of a sensor of the present invention.
Figure 6 is a cross-sectional view of an electrode holder of the utility model.
Figure 7 is an exploded view of the electrode holder of the present invention.
Fig. 8 is an exploded view of the transmitter 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. a signal output section; 265. a seal ring; 300. a receiver; 400. a transmitter; 410. a transmitter housing; 420. an integrated circuit module; 430. a data 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. Accordingly, the description of a certain exemplary embodiment should not be taken as limiting the scope of the utility model.
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 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 herein that the electrode holder 260 includes an upper shell 261 and a lower shell 262, the upper shell 261 is coupled with the lower shell 262, and the second end 212 of the sensor electrode 210 is clamped between the upper shell 261 and the lower shell 262. Specifically, a first conductive part is attached on the lower surface of the upper case 261, and a second conductive part is attached on the upper surface of the lower case 262; one end of the first conductive part is electrically connected to the first electrode of the sensor electrode 210, and the other end is configured with a first signal output terminal; one end of the second conductive part is electrically connected to the second electrode of the sensor electrode 210, and the other end is provided with a second signal output terminal; the first signal output terminal and the second signal output terminal together constitute a signal output portion 264, the signal output portion 264 is configured to output the signal of the sensor electrode 210 to the transmitter 400, and correspondingly, a first through hole through which the first signal output terminal extends and a second through hole through which the second signal output terminal extends are opened on the upper case 261. In one embodiment, the first conductive part and the second conductive part are flexible conductive sheets 263, and the first electrode and the second electrode correspond to the working electrode and the reference electrode of the sensor electrode 210, respectively, so that in this embodiment, the two flexible conductive sheets 263 are electrically connected to the working electrode and the reference electrode of the sensor electrode 210, respectively. For the electrical connection manner of the flexible conductive sheets 263 and the working electrode and the reference electrode of the sensor electrode 210, in an embodiment, the sensor electrode 210 is inserted into the two flexible conductive sheets 263, in this embodiment, the flexible conductive sheets 263 and the sensor electrode 210 have better electrical contact, and at this time, the flexible conductive sheets 263 are made of conductive foam. 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 signal output terminals of the signal output unit 264 is measured.
In another embodiment, the sensor electrodes 210 are respectively welded to two flexible conductive sheets 263, in this embodiment, the electrical contact between the flexible conductive sheets 263 and the sensor electrodes 210 is weaker than that in the previous embodiment, but the connection between the flexible conductive sheets 263 and the sensor electrodes 210 is firm, and in this case, the flexible conductive sheets 263 are made of conductive metal sheets.
With continued reference to fig. 6 and 7, in one embodiment, a sealing ring 265 is further disposed on the upper shell 261 of the electrode holder 260, and the signal output portion 264 is defined in the sealing ring 265, so that when the transmitter 400 is assembled to the sensor base 220 of the sensor 200, a sealed cavity is formed between the upper shell 261 of the electrode holder 260, the sealing ring 265 and the lower surface of the transmitter 400, and the sealing ring serves to waterproof the signal output portion 264.
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 base 220, the two data receiving terminals 430 are electrically connected to the two signal output terminals of the signal output portion 264, respectively, to form a data transmission path.
In one embodiment, a midpoint of a line connecting a center point of the first signal output terminal and a center point of the second signal output terminal is located on the extending path of the sensor electrode 210. It should be understood that the midpoint being referred to herein as being located on the extending path of the sensor electrode 210 does not only mean that the sensor electrode 210 passes through the midpoint, but actually, it means that the straight line on which the second end portion 212 of the sensor electrode 210 is located is perpendicular to the line connecting the center point of the first signal output terminal and the center point of the second signal output terminal.
In another embodiment, the center point of the first signal output terminal and the center point of the second signal output terminal are both located on the extending path of the sensor electrode 210, which means that the line connecting the center point of the first signal output terminal and the center point of the second signal output terminal and the straight line of the second end 212 of the sensor electrode 210 are in the same plane.
In the above two embodiments, the bending process of the sensor electrode 210 can be reduced by limiting the layout of the signal output terminals, and thus the sensor electrode 210 can be prevented from being damaged and the reliability thereof can be prevented from being affected.
The foregoing description, in such full, clear, concise and exact terms, provides the best mode contemplated of carrying out the present 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 utility model is, however, susceptible to modifications and alternative constructions from that described above which are fully equivalent. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed. Rather, the utility model is to cover all modifications and alternative constructions falling within the spirit and scope of the utility model as generally expressed by the following claims, which particularly point out and distinctly define the subject matter of the utility model. While the utility model 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 utility model to the particular embodiments and examples described herein, but rather as covering all modifications and alternatives falling within the true scope and spirit of the utility model.
Claims (12)
1. A sensor comprising at least a sensor base and an electrode assembly disposed on the sensor base, wherein: the electrode assembly comprises a sensor electrode and an electrode holder;
the electrode holder comprises an upper shell and a lower shell;
a first conductive part is attached to the lower surface of the upper shell, and a second conductive part is attached to the upper surface of the lower shell;
one end of the first conductive part is electrically connected to a first electrode of the sensor electrode, and the other end of the first conductive part is provided with a first signal output terminal;
one end of the second conductive part is electrically connected to the second electrode of the sensor electrode, and the other end of the second conductive part is provided with a second signal output terminal;
the first signal output terminal and the second signal output terminal together constitute a signal output section configured to output a signal of the sensor electrode.
2. The sensor of claim 1, wherein: the electrode assembly is detachably disposed on the sensor base.
3. The sensor of claim 2, 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.
4. A sensor according to claim 3, wherein: the electrode assembly is fastened to the bottom surface of the electrode mounting groove.
5. The sensor of claim 1, wherein: the upper shell is buckled on the lower shell.
6. The sensor of claim 1, wherein: the first conductive part and the second conductive part are flexible conductive sheets.
7. The sensor of claim 6, wherein: the flexible conducting strip is made of conductive foam, and the sensor electrode is arranged in the conductive foam in a penetrating mode.
8. The sensor of claim 1, wherein: and the upper shell is provided with a first through hole for the first signal output terminal to extend out and a second through hole for the second signal output terminal to extend out.
9. The sensor of claim 1, wherein: the first signal output terminal and the second signal output terminal are conductive rubber contacts.
10. The sensor of claim 1, wherein: the upper surface of the upper housing is provided with a seal ring in which the signal output portion is defined.
11. A sensor comprising at least a sensor base and an electrode assembly disposed on the sensor base, wherein: the electrode assembly comprises a sensor electrode and an electrode holder;
the electrode holder comprises an upper shell and a lower shell, and the upper shell and the lower shell are assembled in a freely detachable mode;
a first conductive part is attached to the lower surface of the upper shell, and a second conductive part is attached to the upper surface of the lower shell;
one end of the first conductive part is electrically connected to a first electrode of the sensor electrode, and the other end of the first conductive part is provided with a first signal output terminal;
one end of the second conductive part is electrically connected to the second electrode of the sensor electrode, and the other end of the second conductive part is provided with a second signal output terminal;
the first signal output terminal and the second signal output terminal together constitute a signal output section configured to output a signal of the sensor electrode;
and the middle point of a connecting line of the central point of the first signal output terminal and the central point of the second signal output terminal is positioned on the extending path of the sensor electrode.
12. A sensor comprising at least a sensor base and an electrode assembly disposed on the sensor base, wherein: the electrode assembly comprises a sensor electrode and an electrode holder;
the electrode holder comprises an upper shell and a lower shell, and the upper shell and the lower shell are assembled in a freely detachable mode;
a first conductive part is attached to the lower surface of the upper shell, and a second conductive part is attached to the upper surface of the lower shell;
one end of the first conductive part is electrically connected to a first electrode of the sensor electrode, and the other end of the first conductive part is provided with a first signal output terminal;
one end of the second conductive part is electrically connected to the second electrode of the sensor electrode, and the other end of the second conductive part is provided with a second signal output terminal;
the first signal output terminal and the second signal output terminal together constitute a signal output section configured to output a signal of the sensor electrode;
the center point of the first signal output terminal and the center point of the second signal output terminal are both located on the extending path of the sensor electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122336766.5U CN216167443U (en) | 2021-09-26 | 2021-09-26 | Sensor with a sensor element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122336766.5U CN216167443U (en) | 2021-09-26 | 2021-09-26 | Sensor with a sensor element |
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| CN216167443U true CN216167443U (en) | 2022-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114831634A (en) * | 2022-06-28 | 2022-08-02 | 苏州百孝医疗科技有限公司 | Continuous analyte monitoring system |
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2021
- 2021-09-26 CN CN202122336766.5U patent/CN216167443U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114831634A (en) * | 2022-06-28 | 2022-08-02 | 苏州百孝医疗科技有限公司 | Continuous analyte monitoring system |
| CN114831634B (en) * | 2022-06-28 | 2022-10-14 | 苏州百孝医疗科技有限公司 | Continuous analyte monitoring system |
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