CN217219010U

CN217219010U - Pre-attached analyte sensors

Info

Publication number: CN217219010U
Application number: CN202123145064.5U
Authority: CN
Inventors: 钱成
Original assignee: Diascience Medical Co Ltd
Current assignee: Diascience Medical Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-08-19
Anticipated expiration: 2031-12-14

Abstract

The utility model provides a pre-connection analyte sensor, attach the unit and connect to the sensor electrode on the unit in advance including the body surface, the body surface is attached the unit and is included casing and the last casing of coupling on the casing down, still includes the plunger down, the sensor electrode is followed the plunger and is installed on the upper surface of casing down. The utility model discloses can effectively simplify the assembly methods of sensor electrode, improve production efficiency.

Description

Pre-attached analyte sensors

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to connect analyte sensor in advance.

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.

In order to meet the requirements, technical personnel develop a continuous blood sugar monitoring system capable of being implanted into subcutaneous tissues to continuously monitor subcutaneous blood sugar, the system applies a body surface attachment unit to the surface of the skin of a host through an implanter, sensor electrodes attached to the body surface attachment unit are then punctured into the subcutaneous tissues, the sensor electrodes generate oxidation reaction between interstitial fluid of a patient and glucose in the body, an electric signal is formed during reaction, the electric signal is converted into a blood sugar reading through an electronic component, the blood sugar reading is transmitted to a wireless receiver every 1-5 minutes, and corresponding blood sugar data and a map are displayed on the wireless receiver and are formed for the patient and a doctor to refer.

In the existing pre-connected analyte sensor, a sensor electrode needs to be attached to an electrode seat in advance, then the electrode seat is attached to a body surface attachment unit in a buckling mode, a conductive contact electrically connected with the sensor electrode is configured on the electrode seat, and the electrode seat is electrically connected with an electronic component on the body surface attachment unit through the conductive contact. The existing connection mode of the sensor electrode and the conductive contact can be welding or the sensor electrode is arranged in the conductive contact in a penetrating mode, and the mode is complex in operation and low in assembly efficiency.

Disclosure of Invention

The utility model aims at providing a pre-connection analyte sensor can effectively simplify the assembly methods of sensor electrode, improves production efficiency.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows: a pre-attached analyte sensor includes a body surface attachment unit including a lower housing and an upper housing coupled to the lower housing, and a sensor electrode pre-attached to the body surface attachment unit, the sensor electrode being mounted on an upper surface of the lower housing following the plunger.

In the above-described aspect, the external portion of the sensor electrode is configured to protrude out of the plunger and be attached to the upper surface of the lower case, and the internal portion of the sensor electrode is configured to protrude out of the lower surface of the lower case.

In the technical scheme, the external part of the sensor electrode is stuck on the upper surface of the lower shell through the conductive foam.

In the above technical solution, a step is formed on an upper surface of the lower housing, a plunger hole penetrating through the lower housing is formed in the step, and the plunger is coupled to the plunger hole of the step.

In the technical scheme, a first gap is formed in the edge of the lower side of the plunger, two rubber sealing blocks are arranged in the first gap, and the outer part of the sensor electrode extends out of the plunger from the first gap and is clamped and fixed by the two rubber sealing blocks.

In the above solution, a second notch is formed on the step, and the second notch is configured to accommodate and press the two rubber sealing blocks when the plunger is coupled to the plunger hole.

In the above technical solution, a limiting protrusion is formed on the sensor electrode, and the limiting protrusion is configured to abut against an inner side surface of the first notch to prevent the sensor electrode from moving outward along a radial direction of the plunger.

In the above technical solution, a needle hole penetrating the plunger is formed in the plunger, a needle assembly is attached to the upper surface of the plunger, and a sharp part of the needle assembly extends out of the lower surface of the lower housing through the needle hole and is sleeved on the internal part of the sensor electrode.

In the above solution, the needle assembly includes a puncture needle and a hub attached to a blunt portion of the puncture needle, the hub being configured to overlap an upper surface of the plunger.

In the technical scheme, a rubber sealing ring is arranged between the hub and the plunger.

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

the utility model discloses a plunger carries out the centre gripping to the sensor electrode and installs on the upper surface of the lower casing of body surface attachement unit, has realized the quick installation of sensor electrode, has simplified the assembly method, has improved production efficiency.

Drawings

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

Fig. 2 is a schematic diagram of a pre-attached analyte sensor according to an embodiment of the present invention.

Fig. 3 is a schematic view of a plunger according to an embodiment of the present invention not mounted to the lower housing.

Fig. 4 is a schematic view of a plunger of an embodiment of the present invention mounted to a lower housing.

Fig. 5 is a schematic diagram of a sensor electrode according to an embodiment of the present invention not mounted to a plunger.

Fig. 6 is a schematic view of a sensor electrode of an embodiment of the present invention mounted to a plunger.

Fig. 7 is a schematic view of a needle assembly of an embodiment of the present invention mounted to a plunger.

Wherein: 100. a host; 200. a body surface attachment unit; 210. a sensor electrode; 211. an intracorporeal portion; 212. an extracorporeal portion; 213. a limiting bulge; 220. an upper housing; 230. a lower housing; 240. a plunger; 241. a first notch; 242. a rubber sealing block; 243. a pinhole; 250. conductive foam; 260. a step; 261. a plunger hole; 262. a second notch; 270. a needle assembly; 271. puncturing needle; 272. a hub; 300. an electronic component; 400. a receiver; 500. an implanter.

Detailed Description

The following description and examples illustrate some exemplary embodiments disclosed. Those skilled in the art will recognize that there may be many variations and modifications of the embodiments of the present invention.

Continuous blood Glucose Monitoring (CGM) system

FIG. 1 is a schematic illustration of a continuous blood glucose monitoring system attached to a host 100. A continuous blood glucose monitoring system comprising a body surface attachment unit 200 with sensor electrodes 210 is shown, the body surface attachment unit 200 being applied to the skin surface of a host 100 by an implanter 500. The body surface attachment unit 200 has the electronic part 300 mounted thereon, and the electronic part 300 is electrically connected to the sensor electrodes 210 for transmitting information on the glucose concentration monitored by the sensor electrodes 210 to the receiver 400, which may be a smartphone, a smart watch, a dedicated device, and the like in general. During use, the sensor electrodes 210 are positioned partially beneath the skin of the host 100, in contact with subcutaneous interstitial fluid.

Referring to fig. 2, the present invention provides a pre-attached analyte sensor, comprising a body surface attachment unit 200 and a sensor electrode 210 pre-attached to the body surface attachment unit 200, the body surface attachment unit 200 comprising a lower housing 230 and an upper housing 220 coupled to the lower housing 230. The upper casing 220 and the lower casing 230 may be fixed by, for example, a snap-fit connection, and a rubber sealing ring (not shown) is disposed at a joint of the upper casing 220 and the lower casing 230 to improve the sealing property between the upper casing 220 and the lower casing 230; sealant can be dispensed at the joint of the upper shell 220 and the lower shell 230, so as to further improve the sealing property between the upper shell 220 and the lower shell 230.

Referring to fig. 3, a plunger 240 is coupled to the lower case 230 of the body surface attachment unit 200, and the sensor electrodes 210 are mounted on the upper surface of the lower case 230 following the plunger 240. The sensor electrode 210 includes an in-vivo portion 211 and an in-vitro portion 212, wherein the in-vivo portion 211 indicates a portion implanted under the skin of the host 100 and in contact with subcutaneous tissue fluid, and the in-vitro portion 212 indicates a portion exposed to the skin surface of the host 100.

The external portion 212 of the sensor electrode 210 is configured to protrude out of the plunger 240 and to be attached on the upper surface of the lower case 230, and the internal portion 211 of the sensor electrode 210 is configured to protrude out of the lower surface of the lower case 230. Wherein, the external portion 212 of the sensor electrode 210 is adhered on the upper surface of the lower case 230 via the conductive foam 250.

In one embodiment, referring to fig. 4, a step 260 is formed on an upper surface of the lower case 230, a plunger hole 261 penetrating the lower case 230 is formed in the step 260, and the plunger 240 is coupled to the plunger hole 261 of the step 260. For example, the plunger 240 includes a narrow portion at the lower side, which is inserted into the plunger hole 261, and a wide portion at the upper side, which is overlapped on the upper surface of the step 260.

Referring to fig. 5 and 6, a first gap 241 is formed at the lower edge of the plunger 240, two rubber sealing blocks 242 are disposed in the first gap 241, the two rubber sealing blocks 242 extend outward along the radial direction of the plunger 240 from the outer side surface of the first gap 241, and the outer portion 212 of the sensor electrode 210 extends out of the plunger 240 from the first gap 241 and is clamped and fixed by the two rubber sealing blocks 242. In other embodiments, a rubber sealing block 242 may be disposed in the first notch 241, and then a cut extending to the lower surface of the rubber sealing block 242 may be cut in the rubber sealing block 242 along the vertical direction, so as to replace the two rubber sealing blocks 242.

With continued reference to fig. 3 and 4, a second notch 262 is formed on the step 260, when the plunger 240 is coupled to the plunger hole 261, a portion of the two rubber sealing blocks 242 extending out of the outer side surface of the first notch 241 is embedded in the second notch 262, and the two rubber sealing blocks 242 are in interference fit with the second notch 262 so that the two rubber sealing blocks 242 clamp the sensor electrode 210, and at the same time, the two rubber sealing blocks 242 also function to seal the second notch 262, which can prevent moisture from entering the body surface attachment unit 200 through the second notch 262.

With continued reference to fig. 5 and 6, a limiting protrusion 213 is formed on the sensor electrode 210, and the limiting protrusion 213 is configured to abut against an inner side surface of the first notch 241 to prevent the sensor electrode 210 from moving outward in the radial direction of the plunger 240. For example, when the extracorporeal portion 212 of the sensor electrode 210 is pulled outward in the radial direction of the plunger 240, the stopper projection 213 abuts on the inner side surface of the first notch 241, so that the sensor electrode 210 cannot be pulled, thereby positioning the sensor electrode 210 on the plunger 240.

Referring to fig. 7, a needle hole 243 is formed through the plunger 240 in the plunger 240, a needle assembly 270 is attached to the upper surface of the plunger 240, a sharp portion of the needle assembly 270 extends out of the lower surface of the lower housing 230 through the needle hole 243 and is sleeved on the in-vivo portion 211 of the sensor electrode 210, and when the implanter 500 is triggered, the needle assembly 270 guides the in-vivo portion 211 of the sensor electrode 210 into the subcutaneous space of the host 100 in response to the action of the implanter 500. Wherein the needle assembly 270 includes an introducer needle 271 and a hub 272 attached to the blunt portion of the introducer needle 271, the tip of the introducer needle 271 corresponding to the sharp portion of the needle assembly 270, the hub 272 configured to overlap the upper surface of the plunger 240.

A rubber seal is provided between the hub 272 and the plunger 240, and by providing the rubber seal, the sealing between the hub 272 and the plunger 240 can be improved, and water vapor is prevented from entering the body surface attachment unit 200 through the needle hole 243.

When the pre-connected analyte sensor of the present invention is assembled, the sensor electrode 210 is first clamped between the two rubber sealing blocks 242 of the first notch 241 of the plunger 240, and the limiting protrusion 213 on the sensor electrode 210 abuts against the inner side surface of the first notch 241; then the narrow part of the plunger 240 is plugged into the plunger hole 261 of the step 260, and the first gap 241 is aligned with the second gap 262 along the vertical direction in the process of installing the plunger 240, so that the parts of the two rubber sealing blocks 242, which extend out of the outer side surfaces of the first gap 241, are just embedded into the second gap 262 in an interference manner when the plunger 240 is installed in place; then the external part 212 of the sensor electrode 210 is bent properly and then adhered to the upper surface of the lower shell 230 by the conductive foam 250; finally, the puncture needle 271 of the needle assembly 270 is inserted into the needle hole 243 in the vertical direction, and the body portion 211 of the sensor electrode 210 is embedded in the puncture needle 271.

The utility model discloses an assembly method of sensor electrode compares in current with the sensor electrode welding on conductive contact or run through the assembly method in conductive contact and has apparent advantage, the utility model discloses an assembly of sensor electrode is simple and convenient more, is favorable to improving production efficiency.

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 is to cover all modifications and alternative constructions falling within the spirit and scope of the invention as expressed generally 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 also cover all modifications and alternatives falling within the true scope and spirit of the invention.

Claims

1. A pre-attached analyte sensor comprising a body surface attachment unit and a sensor electrode pre-attached to the body surface attachment unit, the body surface attachment unit comprising a lower housing and an upper housing coupled to the lower housing, characterized in that: and a plunger, the sensor electrode being mounted on the upper surface of the lower case following the plunger.

2. The pre-attached analyte sensor of claim 1, wherein: the external portion of the sensor electrode is configured to protrude out of the plunger and to be attached on the upper surface of the lower case, and the internal portion of the sensor electrode is configured to protrude out of the lower surface of the lower case.

3. The pre-attached analyte sensor of claim 2, wherein: the external part of the sensor electrode is pasted on the upper surface of the lower shell through conductive foam.

4. The pre-attached analyte sensor of claim 1, wherein: the lower case has a step formed on an upper surface thereof, the step having a plunger hole formed therein to penetrate the lower case, and the plunger is coupled to the plunger hole of the step.

5. The pre-attached analyte sensor of claim 4, wherein: the sensor electrode comprises a plunger, a sensor electrode and a sensor electrode, wherein a first gap is formed in the edge of the lower side of the plunger, two rubber sealing blocks are arranged in the first gap, and the outer part of the sensor electrode extends out of the plunger from the first gap and is clamped and fixed by the two rubber sealing blocks.

6. The pre-attached analyte sensor of claim 5, wherein: a second notch is formed in the step and is configured to receive and compress the two rubber sealing blocks when the plunger is coupled to the plunger bore.

7. The pre-attached analyte sensor of claim 5, wherein: the sensor electrode is formed with a stopper projection configured to abut on an inner side surface of the first notch to prevent the sensor electrode from moving radially outward of the plunger.

8. The pre-attached analyte sensor of claim 1, wherein: the plunger is internally provided with a needle hole penetrating through the plunger, the upper surface of the plunger is attached with a needle assembly, and the sharp part of the needle assembly extends out of the lower surface of the lower shell through the needle hole and is sleeved on the internal part of the sensor electrode.

9. The pre-attached analyte sensor of claim 8, wherein: the needle assembly includes a puncture needle and a hub attached to a blunt portion of the puncture needle, the hub configured to overlap an upper surface of a plunger.

10. The pre-attached analyte sensor of claim 9, wherein: and a rubber sealing ring is arranged between the hub and the plunger.