CN219166416U - Continuous blood sugar monitoring device - Google Patents

Abstract

The utility model discloses a continuous blood sugar monitoring device which comprises a shell, a needle assisting component and a skin fixing seat, wherein one end of the shell is provided with an opening, the continuous blood sugar monitoring device also comprises a trigger cover arranged at one end of the needle assisting component, the trigger cover is provided with a propping part used for being contacted with skin, the needle assisting component can synchronously move towards the opening with the trigger cover and moves relative to the trigger cover when the propping part is stopped, so that the needle assisting component can move relative to the trigger cover, the skin fixing seat is fixed on the needle assisting component, and one end of the skin fixing seat and the lower end of the needle assisting component are positioned at the same end face. The trigger shield can prevent false triggering of the needle assisting component, and after false triggering, the needle assisting component is reset through simple operation, so that the next implantation operation is not affected. Therefore, after the monitoring device is triggered by mistake, a retrieval measure is provided, and the user is given more opportunities for trial and error, so that the problem that the whole product is scrapped due to one-time misoperation is avoided, the use cost is reduced, and the use experience is improved.

Description

Continuous blood sugar monitoring device

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a continuous blood glucose monitoring device.

Background

A biosensor is an instrument that is sensitive to bioactive substances and converts the perceived concentration of bioactive substances into an electrical signal for detection. Among them, glucose sensors are a more common type of biological sensor. CGM (continuous blood glucose monitoring) is a technical means for continuously monitoring the glucose concentration of interstitial fluid in subcutaneous tissue by means of a glucose sensor, thereby indirectly reflecting the blood glucose level.

When the CGM product is used, a user needs to place the shell of the CGM product on skin, then press the trigger button, at the moment, the puncture needle and the sensor pin inside the shell move towards the skin and puncture the skin of a human body, and the biological enzyme on the sensor and subcutaneous tissue liquid generate electrochemical reaction, are converted into electric signals and are provided for the user through being converted into blood glucose values.

In order to ensure the cleaning of the puncture needle and the sensor, the CGM product is usually a disposable product, namely, after the user presses a trigger button to enable the puncture needle and the sensor to move to complete the implantation action, the product cannot be reused. And because the trigger button generally sets up at the casing surface, in CGM product transportation or when the user takes, holds the casing, the condition that extremely appears touching the trigger button by mistake easily leads to pjncture needle and sensor to accomplish the implantation motion in advance when the user does not press the casing on skin, and then leads to this product to scrap, this not only leads to the use experience of current monitoring devices applicator not good enough, has increased user's use cost moreover.

Therefore, generally, CGM products are provided with safety locks to prevent false triggering before use by users. Thus, the sensor is required to be released before being implanted. However, during the period from when the user touches the safety lock to before the actual implantation, there is still a risk of the monitoring device being triggered by mistake, since the user's hand is always holding the monitoring device and there is some fear in the user's mind before implantation.

In addition, once the monitoring device is triggered by mistake, the internal puncture needle rapidly completes the implantation and needle withdrawal actions, and the actions are irreversible, so that the puncture needle cannot be reset to be used again, the monitoring device is directly scrapped, and the sensor is not implanted under the skin of a patient at the moment, so that the monitoring device is wasted, and the use cost is greatly increased.

Disclosure of Invention

The present utility model provides a continuous blood glucose monitoring device to solve at least one of the above technical problems.

The technical scheme adopted by the utility model is as follows:

a continuous blood glucose monitoring device comprising a housing, a needle assist assembly disposed within the housing, and a skin anchor seat, one end of the housing having an opening, the monitoring device further comprising a trigger cap disposed at one end of the needle assist assembly, the trigger cap having a butt portion for contacting the skin, the needle assist assembly being movable synchronously with the trigger cap toward the opening and relative to the trigger cap when the butt portion is stopped so that the needle assist assembly is movable relative to the trigger cap to have a first proximal position and a first distal position; the skin fixing seat is fixed on one end of the needle assisting component facing the opening, and one end of the skin fixing seat and the lower end of the needle assisting component are positioned on the same end face.

The trigger cover is arranged inside the shell, the shell is provided with a limiting part, the trigger cover is provided with a stop part, and the stop part is in butt joint with the limiting part.

One end of the trigger cover and one end of the shell are positioned on the same end face.

The trigger cover is provided with a first clamping structure, the needle assisting assembly is provided with a second clamping structure, and the first clamping structure is matched with the second clamping structure in a clamping way.

One of the outer wall of the trigger cover and the inner wall of the shell is provided with a guide rib position, the other one of the outer wall of the trigger cover and the inner wall of the shell is provided with a guide groove matched with the guide rib position, and the guide groove and the guide rib position extend towards the opening.

The needle assist assembly comprises a pushing member and a puncturing member, the puncturing member is capable of moving relative to the pushing member to have a second proximal end position and a second distal end position, the pushing member is provided with a limiting structure for limiting the puncturing member to the second proximal end position, the trigger cover is provided with an unlocking structure, and when the needle assist assembly moves to the first proximal end position, the unlocking structure can release the limiting of the limiting structure so that the puncturing member moves to the second distal end position.

The pushing piece is provided with a guide part, a guide channel is arranged in the guide part, the puncture piece is arranged in the guide channel, the limiting structure comprises a abutting wing arranged on the guide part, the abutting wing is provided with a stop protrusion protruding towards the inside of the guide channel, and the stop protrusion is limited with the puncture piece stop to limit the movement of the puncture piece to the distal end position.

The puncture piece is provided with a matching plane, and the stop protrusion is in abutting matching with the matching plane.

The unlocking structure comprises an unlocking convex rib arranged on the trigger cover, and the unlocking convex rib can prop against the abutting wing to enable the stop protrusion to move and separate from the puncture piece.

The trigger cover is provided with a slide way, the abutting wing is positioned in the slide way and moves along the slide way, and the unlocking convex rib is positioned at one end of the slide way.

The abutting wings extend obliquely towards the outer side of the guide channel to form a fixed end and a free end, the stop protrusions are arranged at the free end, and the unlocking structure can abut against the free end.

One of the inner wall of the guide channel and the outer wall of the puncture member is provided with a guide sliding strip, and the other one of the guide channel and the outer wall of the puncture member is provided with a guide sliding groove matched with the guide sliding strip.

The puncture part comprises a needle body and a needle seat, the monitoring device further comprises a tension spring, one end of the tension spring is connected with the needle seat, and the other end of the tension spring is connected with the pushing part.

The monitoring device further comprises a trigger piece, the trigger piece is provided with a connecting end and an operating end, the connecting end is hinged with the shell, the trigger piece is further provided with a pushing part, and the pushing part can push the auxiliary needle assembly to enable the auxiliary needle assembly to move towards the opening.

The needle assisting assembly comprises a pushing part and a transmission part arranged in the shell, the transmission part is fixedly connected with the pushing part, the pushing part is provided with a positioning column, the transmission part is provided with a positioning slide way, the positioning column is arranged in the positioning slide way, and when the operation end rotates around the connection end, the positioning column can slide in the positioning slide way.

The skin fixing seat comprises a base, a sensor and a sensor electronic unit, wherein the sensor is fixed on the base, and the sensor electronic unit is detachably connected with the base.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. according to the utility model, the trigger cover is arranged at one end of the auxiliary needle assembly, the trigger cover can be used as an anti-false touch part of the monitoring device, so that the anti-false touch of the auxiliary needle assembly is realized, and the auxiliary needle assembly can be reset through simple operation after false touch, so that the next implantation operation is not influenced. Because the trigger cover is connected with the needle assisting component, when the user does not cling the propping part of the trigger cover to the skin, the trigger cover is not blocked, so the needle assisting component and the trigger cover can move towards the opening together, and the needle withdrawing action of the puncture part in the needle assisting component is not triggered although the implantation action is completed, so the rejection of the monitoring device is not caused, and the user can push the needle assisting component and the trigger cover back to reset and the next use of the monitoring device is not influenced. Only when the user clings the propping part of the trigger cover to the skin, so that the trigger cover cannot move together with the needle assisting component, and the needle assisting component independently moves to the first proximal end position, the trigger cover can trigger the needle withdrawing movement of the puncture part, and complete implantation and needle withdrawing actions are completed. Through the design, a retrieval measure is provided after the monitoring device is triggered by mistake, and a user is given more opportunities for trial and error before the monitoring device is triggered by the correct operation method, so that the problem that the whole product is scrapped due to one-time misoperation is avoided, the use cost is reduced, and the use experience is improved.

2. As a preferred embodiment of the utility model, the trigger cover is arranged in the shell, the shell is provided with a limiting part, and the trigger cover is provided with a stop part which is in abutting contact with the limiting part. After the limit part is matched with the stop part, the limit part is used for limiting the trigger cover, when a user mistakenly triggers, the trigger cover moves towards the opening along with the auxiliary needle assembly, at the moment, a part of the trigger cover extends out of the opening, the user can intuitively see the position of the trigger cover, and the state of the trigger cover and the auxiliary needle assembly is known, so that the trigger cover and the auxiliary needle assembly can be pushed back and reset directly by pushing the trigger cover from bottom to top. After the trigger cover is reset, the stop part is matched with the stop part, and the trigger cover cannot move upwards at the moment, so that a user is given a prompt of resetting in place through force feedback.

3. As a preferred embodiment of the utility model, one of the outer wall of the trigger cap and the inner wall of the housing is provided with a guide rib position, and the other is provided with a guide groove which is matched with the guide rib position, and the guide groove and the guide rib position extend towards the opening. The guide rib position and the guide groove are matched to form the movement limit of the trigger cover, so that the trigger cover can only move along the axial direction of the shell, and can not rotate, and the movement reliability of the trigger cover is improved.

4. As a preferred embodiment of the utility model, the needle assembly comprises a pusher and a penetrating member, the penetrating member being movable relative to the pusher to have a second proximal position and a second distal position, the pusher being provided with a limiting structure for limiting the penetrating member to the second proximal position, the trigger cap being provided with an unlocking structure which is capable of releasing the limiting structure when the needle assembly is moved to the first proximal position, so as to move the penetrating member to the second distal position. The limiting structure limits the puncture member to enable the puncture member to move synchronously with the pushing member, when implantation is completed, the puncture member is located at the first proximal end position, and the puncture member is triggered by the unlocking structure, so that the limitation of the limiting structure is relieved, and the puncture member can move relative to the pushing member. At this time, the pushing member still stays at the first proximal end position, and the puncture member alone retracts to the second distal end position, so that the needle withdrawing operation is completed. The unlocking structure is located at the first proximal end position and located on the movement path of the puncture member, so that when the pushing member carries the puncture member to move to the first proximal end position together, the unlocking structure can automatically trigger and unlock the puncture member, the needle withdrawing operation is not needed to be additionally carried out by a user, the continuous operation of the implantation and needle withdrawing steps is automatically completed in one step, the operation steps of the user are simplified, the operation difficulty is reduced, and the use experience is greatly improved.

5. As a preferred embodiment of the utility model, the monitoring device further comprises a trigger member having a connecting end and an operating end, the connecting end being hinged to the housing, the trigger member further having a push top portion capable of pushing the push member to move the push member and the puncture assembly towards the opening. The connecting end of the trigger piece is hinged with the shell, so that the trigger piece can rotate relative to the shell to realize the switching between the initial position and the auxiliary needle position, namely, the trigger piece can realize the triggering of the monitoring device through rotation. Compared with the mode of pressing the button, the operation hand feeling is improved by means of the hinged shaft for transmission, and the distance between the operation end and the connection end is long, so that the length of the force arm is long, and the user can operate the trigger piece more easily and more easily. The trigger piece is hinged with the shell, so that the trigger piece can obtain more remarkable visual effect, and a user can consciously avoid fingers from the trigger piece when holding the shell, thereby reducing the probability of false triggering caused by false triggering of the trigger piece when holding the monitoring device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is an exploded view of the structure of a monitoring device according to one embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the monitoring device of FIG. 1;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a schematic view of a trigger according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of the housing according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a driving member according to an embodiment of the present utility model;

FIG. 7 is a schematic view of another side of the driving member of FIG. 6;

FIG. 8 is a schematic structural view of a pushing member according to an embodiment of the present utility model;

FIG. 9 is a schematic view of a trigger shield according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a skin fixing base according to an embodiment of the present utility model;

FIG. 11 is a schematic view of the base of FIG. 10;

FIG. 12 is a schematic diagram of the sensor electronics unit of FIG. 10;

FIG. 13 is a cross-sectional view of a piercing member according to an embodiment of the utility model;

FIG. 14 is a schematic view of the needle of FIG. 13;

fig. 15 is a schematic view of the structure of the hub of fig. 13.

Wherein:

1, a shell; 11, passing through the mouth; 12 guide protrusions; 13 a hinging seat; 14 limit parts;

2, a needle assisting component; 21 a transmission member; 211 positioning a slideway; 212 positioning ribs; 213 limit ribs; 214 avoid the gap; 215 guide grooves; 216 initial end; 217 trigger; 218 a first clamping portion; 22 pushing members; 221 guide portions; 2211 guide the passage; 2212 abuts against the wing; 2213 stop the bump; 2214 reinforcing ribs; 2215 guide the slide bar; 222 a second clamping portion; 223 second clamping structure; 2231 guide surface; 23 punctures; a 231 needle body; 232 needle stand; 2321 mating planes; 2322 guiding chute;

3, triggering a piece; 31 pushing the top; 311 positioning columns; 32 connection ends; 321 an articulated arm; 322 hinge shaft; 33 an operating end;

4, triggering a hood; 41 against the top; 42 slides; 43 unlocking the ribs; 44 a first clamping structure; 45 guide grooves; 46 stops;

5 skin fixing seat; a 51 base; 511 mounting locations; 512 first clamping rib positions; 52 sensors; 53 sensor electronics; 531 second clamping rib positions; 532 positioning structure;

and 6, a tension spring.

Detailed Description

In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

In addition, in the description of the present utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, the descriptions of the terms "implementation," "embodiment," "one embodiment," "example," or "particular example" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 15, a continuous blood glucose monitoring device comprises a housing 1, a needle assisting component 2 arranged in the housing 1, and a skin fixing seat 5, wherein one end of the housing 1 is provided with an opening, the monitoring device further comprises a trigger cover 4 arranged at one end of the needle assisting component 2, the trigger cover 4 is provided with a propping part 41 for contacting with skin, the needle assisting component 2 can synchronously move towards the opening with the trigger cover 4, and can move relative to the trigger cover 4 when the propping part 41 is stopped, so that the needle assisting component 2 can move relative to the trigger cover 4 to have a first proximal end position and a first distal end position, the skin fixing seat 5 is fixed on one end of the needle assisting component 2 towards the opening, and one end of the skin fixing seat 5 and the lower end of the needle assisting component 2 are positioned on the same end face.

It will be appreciated that the first distal position is the initial position of the needle assist assembly 2, and in use, the opening of the housing 1 is brought into close proximity with the patient's skin, and after the trigger is triggered by the user, the needle assist assembly 2 performs an implantation action, i.e. moves towards the opening to a position where the penetrating needle penetrates the patient's skin, whereupon the needle assist assembly 2 reaches the first proximal position.

According to the utility model, the trigger cover 4 is arranged at one end of the auxiliary needle assembly 2, the trigger cover 4 can be used as an anti-false touch component of the monitoring device, so that the anti-false touch of the auxiliary needle assembly 2 is realized, and after false touch, the auxiliary needle assembly 2 can be reset through simple operation without influencing the next implantation operation.

When the user does not press the abutting portion of the trigger cover 4 against the skin, it means that the user does not operate the monitoring device according to the correct use method, and at this time, it is understood that the false triggering operation is performed. Because trigger cover 4 is connected with helping needle subassembly 2, when trigger cover 4 does not receive the backstop, helping needle subassembly 2 can together be towards the opening motion with trigger cover 4, and even accomplished the action of implanting this moment, but can not trigger helping needle subassembly 2 inside puncture piece 23's needle action of moving back, consequently can not lead to monitoring devices's disability, user's accessible is helping needle subassembly 2 and trigger cover 4 to push back to reset to can not cause the influence to monitoring devices's next use.

When the user applies the opening to the skin surface, the abutment portion 41 of the trigger cap 4 contacts the skin and is stopped by the skin, which indicates that the user is using the device in a correct manner, and after the monitoring device is triggered, the trigger cap 4 cannot move along with the needle assist assembly 2, the needle assist assembly 2 alone moves to the first proximal position, and the trigger cap 4 can trigger the needle retracting movement of the puncture element 23, so that the complete implantation and needle retracting actions are completed.

Through the design, a retrieval measure is provided after the monitoring device is triggered by mistake, and a user is given more opportunities for trial and error before the monitoring device is triggered by the correct operation method, so that the problem that the whole product is scrapped due to one-time misoperation is avoided, the use cost is reduced, and the use experience is improved.

As shown in fig. 2, one end of the skin fixing seat 5 and the lower end of the needle assisting assembly 2 are located on the same end face, so that when the user correctly triggers the monitoring device and the needle assisting assembly 2 moves to the first proximal end position, the skin fixing seat 5 is simultaneously contacted with skin, and an adhesive layer is arranged on one side of the skin fixing seat 5 facing the skin, so that the skin fixing seat 5 is adhered on the skin surface under the action of adhesive force and separated from the needle assisting assembly 2.

As a preferred embodiment of the present utility model, as shown in fig. 2 and 3, the trigger cover 4 is disposed inside the housing 1, the housing is provided with the stopper 14, and the trigger cover 4 is provided with the stopper 46, and the stopper 46 abuts against the stopper 14.

As shown in fig. 2, after the limiting portion 14 is matched with the stop portion 46, limiting of the trigger cover 4 is formed, when a user triggers by mistake, the trigger cover 4 moves towards the opening along with the needle assisting component 2, at this time, a part of the area of the trigger cover 4 stretches out of the opening, at this time, the user can intuitively see the position of the trigger cover 4, know the states of the trigger cover 4 and the needle assisting component 2, and can push the trigger cover 4 and the needle assisting component 2 back and reset by directly pushing the trigger cover 4 from bottom to top. After the trigger cover 4 is reset, the stop part 46 is in stop fit with the limiting part 14, at this time, the trigger cover 4 cannot move upwards continuously, and accordingly a user is given a return-to-place prompt through force feedback.

Preferably, as shown in fig. 3, the casing 1 is turned outwards at the opening to form a limit groove, the groove wall of the limit groove forms a limit part 14, the bottom end of the trigger cover 4 is also turned outwards to form a turned-out edge, the turned-out edge is positioned in the limit groove, the upper end surface of the turned-out edge forms a stop part 46, and the lower end surface forms a supporting part 41. Meanwhile, the flanging structure also increases the contact area between the propping part 41 and the skin, improves the touch feeling of a user and improves the comfort of use.

Further, as shown in fig. 2 and 3, one end of the trigger cover 4 is located on the same end face as one end of the housing 1.

In the initial state, the shell 1 encloses the trigger cover 4, so that the hidden design of the trigger cover 4 is realized, the appearance of the monitoring device is more simplified, and when the trigger cover 4 stretches out from the opening due to misoperation of a user, the user can obviously see the state of the trigger cover 4.

In the preferred embodiment, as shown in fig. 8 and 9, the trigger cover 4 has a first clamping structure 44, and the auxiliary needle assembly 2 has a second clamping structure 223, and the first clamping structure 44 and the second clamping structure 223 are in clamping fit.

Specifically, as shown in fig. 8 and 9, the first clamping structure 44 is a clamping protrusion disposed on the trigger cover 4, the second clamping structure 223 is a clamping groove disposed on the needle assisting component 2, the clamping protrusion is disposed in the clamping groove, and a guiding surface 2231 is disposed on a groove wall of an upper side of the clamping groove, so that the clamping protrusion can slide out of the clamping groove along the guiding surface 2231 above the clamping groove when the trigger cover 4 is stopped, and the trigger cover 4 and the needle assisting component 2 are disconnected.

Of course, the first clamping structure 44 may be a clamping groove, and the second clamping structure 223 is correspondingly a clamping protrusion, and a guiding surface is disposed on a groove wall of the lower side of the clamping groove, so that the second clamping structure 223 is separated from the clamping groove from the lower side. Alternatively, the first clamping structure 44 and the second clamping structure 223 are both clamping protrusions, and the opposite sides of the two are provided with guiding surfaces, which are not limited herein.

As a preferred embodiment of the present utility model, as shown in fig. 9, one of the outer wall of the trigger cap 4 and the inner wall of the housing 1 is provided with a guide rib position, and the other is provided with a guide groove 45 engaged with the guide rib position, the guide groove 45 and the guide rib position extending toward the opening.

The guide rib position and the guide groove 45 cooperate to form the movement limit of the trigger cover 4, so that the trigger cover 4 can only move along the axial direction of the shell 1 and cannot rotate, and the movement reliability of the trigger cover 4 is improved.

As shown in fig. 9, in one embodiment, the guide rib is disposed on the inner wall of the casing 1, the guide groove 45 is disposed on the outer wall of the trigger cover 4, and of course, the guide rib may be disposed on the outer wall of the trigger cover 4, and the guide rib is disposed on the inner wall of the casing 1. Further, the limit of the movement amount of the trigger cover 4 can be realized by setting the length of the guide groove 45.

In a preferred embodiment, as shown in fig. 2, the needle assembly 2 comprises a pusher 22 and a piercing member 23, the piercing member 23 being movable relative to the pusher 22 to have a second proximal position and a second distal position, the pusher 22 being provided with a limiting structure for limiting the piercing member 23 to the second proximal position, the trigger cap 4 being provided with an unlocking structure which is capable of releasing the limit of the limiting structure when the needle assembly 2 is moved to the first proximal position, so as to move the piercing member 23 to the second distal position.

When the user triggers the implantation operation, the pushing member 22 and the puncturing member 23 move synchronously, and together move from the first distal position to the first proximal position, at which time the puncturing member 23 punctures the skin of the patient, and the sensor stylus inside the skin fixing seat 5 is implanted subcutaneously in the patient. The limiting structure limits the puncture member 23 so that the puncture member 23 and the pushing member 22 can synchronously move, and when implantation is completed, the puncture member 23 is positioned at the first proximal end position, and the puncture member 23 is triggered by the unlocking structure, so that the limitation of the limiting structure is relieved, and the puncture member 23 can move relative to the pushing member 22. At this point, the pusher 22 remains in the first proximal position and the penetrating member 23 alone retracts to the second distal position, completing the needle retraction operation.

The unlocking structure is located at the first proximal end position and located on the movement path of the puncture member 23, so that when the pushing member 22 carries the puncture member 23 to move to the first proximal end position together, the unlocking structure can automatically trigger and unlock the puncture member 23, the needle withdrawing operation is not needed to be additionally carried out by a user, the continuous operation of the implantation and needle withdrawing steps is automatically completed in one step, the operation steps of the user are simplified, the operation difficulty is reduced, and the use experience is greatly improved.

Further, as shown in fig. 2 and 13 to 15, the puncture member 23 includes a needle body 231 and a needle holder 232, and the monitoring device further includes a tension spring 6, one end of the tension spring 6 is connected to the needle holder 232, and the other end is connected to the needle assist assembly 2. The tension spring 6 provides the power required by the needle withdrawing movement for the puncture member 23, and when the unlocking structure unlocks the limiting structure, the puncture member 23 moves to the second distal end position under the pulling of the tension spring 6, so that the needle withdrawing is completed.

In a preferred embodiment, as shown in fig. 8, the pushing member 22 has a guiding portion 221, a guiding channel 2211 is formed in the guiding portion 221, the puncture member 23 is disposed in the guiding channel 2211, the limiting structure includes an abutting wing 2212 disposed in the guiding portion 221, the abutting wing 2212 has a stop protrusion 2213 protruding toward the inside of the guiding channel 2211, and the stop protrusion 2213 is stopped by the puncture member 23 to limit the movement of the puncture member 23 toward the second distal end position.

As shown in fig. 8, the guide part 221 is provided with an abutting wing 2212 extending outside the guide channel 2211, the abutting wing 2212 is internally provided with a stop protrusion 2213, and the stop protrusion 2213 is stopped by the puncture element 23 to form a limit stop for the puncture element 23.

As shown in fig. 8, the abutment wings 2212 extend obliquely toward the outside of the guide channel 2211 to have a fixed end and a free end, the stop projection 2213 is disposed at the free end, and the unlocking structure can abut against the free end, so that the abutment wings 2212 switch the limiting state of the puncture member 23 in a deformation manner.

In addition, as shown in fig. 8, the abutting wings 2212 are further provided with reinforcing ribs 2214 to improve the strength of the abutting wings 2212 and prevent the abutting wings 2212 from being broken due to large deformation when being pressed.

Further, as shown in fig. 15, the puncture element 23 has an engagement plane 2321, and the stop projection 2213 is in abutting engagement with the engagement plane 2321.

The stop protrusion 2213 is stopped by the matching plane 2321, so that the contact area of the stop protrusion 2213 and the matching plane 2321 is increased, the stop of the stop protrusion 2213 on the puncture member 23 is more stable and stable, the stability is improved, and the puncture member 23 is prevented from being triggered by mistake.

Preferably, as shown in fig. 13 and 15, the puncture member 23 includes a needle body 231 and a needle holder 232, the needle holder 232 serves as a carrier for the needle body 231, and a mating plane 2321 is provided to the needle holder 232.

Further, as shown in fig. 8 and 15, one of the inner wall of the guide channel 2211 and the outer wall of the puncture member 23 is provided with a guide slide 2215, and the other is provided with a guide chute 2322 matched with the guide slide 2215, and the guide chute 2322 and the guide chute cooperate to form a limit for the puncture member 23, so that the puncture member 23 can move axially along the housing 1. And prevents the lancet 23 from deflecting itself during withdrawal of the needle.

As shown in fig. 9, the unlocking structure includes an unlocking rib 43 provided on the trigger housing 4, the unlocking rib 43 being able to abut against the abutment wings 2212 to move the stop projection 2213 and disengage from the piercing member 23.

When the pushing member 22 and the puncturing member 23 move together to the first proximal position, the unlocking rib 43 presses the abutment wings 2212, so that the abutment wings 2212 deform and open to the outside of the guide channel 2211, and the stop protrusions 2213 on the inner side of the abutment wings synchronously open to the outside, so that the stop of the puncturing member 23 is lost, and at the moment, the puncturing member 23 can move upwards under the action of the tension spring 6 to complete needle withdrawal.

Further, as shown in fig. 9, the trigger cover 4 is provided with a slide 42, the abutment wings 2212 are located in the slide 42 and move along the slide 42, and the unlocking rib 43 is located at one end of the slide 42.

The slide 42 and the butt wing 2212 cooperate to further play the motion guiding effect to the propelling movement piece 22, and the unblock bead 43 is located the one end of slide 42 simultaneously, can ensure that the unblock structure is effectively triggered butt wing 2212, reduces the probability that leads to unblock structure inefficacy because of assembly error, improves two cooperation reliability.

Preferably, as shown in fig. 8 and 9, the two abutting wings 2212 are symmetrically disposed at two sides of the guiding channel 2211, and the two sliding ways 42 are correspondingly disposed at two sides of the guiding portion 221, so that the two abutting wings 2212 are located in the sliding way 42 and move along the sliding way 42.

In a preferred embodiment, as shown in fig. 1 and 2, the monitoring device further comprises a trigger 3, the trigger 3 has a connection end 32 and an operation end 33, the connection end 32 is hinged with the housing 1, the trigger 3 further has a push top 31, and the push top 31 can push the needle-aid assembly 2 to move the needle-aid assembly 2 towards the opening.

The connecting end 32 of the trigger piece 3 is hinged with the shell 1, so that the trigger piece 3 can rotate relative to the shell 1 to realize the switching between an initial position and a needle assisting position, namely, the trigger piece 3 can realize the triggering of the monitoring device through rotation. Compared with the mode of pressing the button, the operation hand feeling is improved by means of the hinged shaft for transmission, and the distance between the operation end 33 and the connection end 32 is longer, so that the length of the arm of force is longer, and the user can operate the trigger piece 3 more easily and more easily.

In addition, trigger piece 3 is articulated with shell 1 to be connected, can make trigger piece 3 obtain more showing visual effect, and the user can consciously dodge the finger when holding shell 1 trigger piece 3 to the probability that the mistake when holding monitoring devices triggers piece 3 and leads to the mistake to trigger reduces.

Moreover, at trigger piece 3 pivoted in-process, user and medical personnel can see trigger piece 3's state in real time to learn the implantation state of inside helping needle subassembly 2, be convenient for carry out accurate accuse to implantation process, improve and use experience.

As shown in fig. 4 and 5, in a specific embodiment, the connection end 32 of the trigger member 3 is provided with an articulated arm 321, the housing 1 is provided with an articulated seat 13, the side wall of the articulated arm 321 protrudes to form an articulated shaft 322, and the articulated shaft 322 extends into a hole of the articulated seat 13 to complete articulation. Of course, the hinge shaft may be fixed to the hinge seat 13, and the hinge arm 321 is correspondingly provided with a hole for the hinge shaft to pass through. For another example, the hinge arm 321 and the hinge seat 13 are provided with openings, the hinge shaft is of an independent structure, and the hinge shaft passes through the openings of the hinge arm 321 and the hinge seat 13 to realize hinge fit.

It should be noted that, the manner in which the trigger 3 triggers the needle assist assembly 2 is not particularly limited in the present utility model, in one embodiment, the housing is provided with a stop structure for limiting the needle assist assembly 2 to limit the needle assist assembly 2 at the first distal position, and when the trigger 3 is operated by the user, the trigger 3 pushes the needle assist assembly 2 to disengage from the stop structure, so as to automatically move toward the first proximal position to complete the implantation. For example, a spring or the like may be provided within the housing to provide a pushing force for the needle assembly 2 to move towards the first proximal position.

In another embodiment, the needle assisting component 2 is a manually implanted structure, that is, when the user operates the trigger component 3, the trigger component 3 needs to be pressed all the time, so that the trigger component 3 continuously forms pushing force on the needle assisting component 2, and further the needle assisting component 2 is continuously pushed to move to the first proximal end position, the implantation process needs to be performed by the user to press the trigger component 3 all the time, and the pushing force of the trigger component 3 on the needle assisting component 2 and the movement speed of the needle assisting component 2 are completely controlled by the user.

Specifically, as shown in fig. 5, the top wall of the housing 1 is provided with a through opening 11, and the push part 31 extends into the housing 1 from the through opening 11 to cooperate with the needle assisting component 2, and when the trigger piece 3 is in the needle assisting position, the trigger piece 3 covers the through opening 11.

Preferably, the angle between the initial position of the trigger 3 and the implantation position is 30-60 °.

The rotation motion of the trigger piece 3 is converted into the pushing force of the auxiliary needle assembly 2 along the axial direction of the shell 1, the trigger piece 3 only needs to rotate by a small angle, the auxiliary needle assembly 2 can complete implantation action, meanwhile, a user can operate more conveniently, and the trigger piece 3 can be pressed by only one-hand operation.

Further, as shown in fig. 1 and 6, the needle assisting assembly 2 includes a pushing member 22 and a driving member 21 disposed in the housing 1, the driving member 21 is fixedly connected with the pushing member 22, the pushing portion 31 has a positioning column 311, the driving member 21 is provided with a positioning slide 211, the positioning column 311 is disposed in the positioning slide 211, and when the operating end 33 rotates around the connecting end 32, the positioning column 311 can slide in the positioning slide 211.

The positioning slide way 211 can limit the positioning column 311, the movement of the positioning column 311 is limited in the positioning slide way 211, when the trigger piece 3 rotates around the hinge shaft, the positioning column 311 not only forms pushing force towards the opening to the auxiliary needle assembly 2, so that the auxiliary needle assembly 2 moves, but also transversely slides along the positioning slide way 211, the movement of the trigger piece 3 is more reliable, the trigger piece 3 can move along a preset path, and the operation hand feeling of a user is more stable.

Further, as shown in fig. 6, the positioning slide 211 extends transversely to have an initial end 216 and a trigger end 217, and a limiting rib 213 is further disposed in the positioning slide 211, where the limiting rib 213 can be in stop fit with the positioning post 311 to limit the positioning post 311 to the initial end 216.

The positioning column 311 is limited at the initial end 216 by the limiting rib 213 and is matched with the positioning column 311 in a stop mode, so that a user cannot easily trigger the trigger piece 3 to rotate when pressing the trigger piece 3, and a large force needs to be applied to enable the positioning column 311 to pass over the limiting rib 213 so as to slide in the positioning slide rail 211, the operation difficulty of the trigger piece 3 is properly increased, and the false touch preventing effect of the trigger piece 3 is further improved.

Preferably, as shown in fig. 4 and 6, the positioning column 311 has a cylindrical structure, and the surface of the limiting rib 213 is also provided with a transitional cambered surface, so that the positioning column 311 is smoother when passing over the limiting rib 213, the jamming feeling of the positioning column 311 during movement is reduced, and the operation hand feeling is improved.

Taking fig. 2 and 6 as an example, the left end of the positioning slide 211 is the initial end 216, the right end is the trigger end 217, when the operating end 33 of the trigger 3 rotates downward, the end of the pushing portion 31, that is, the positioning post 311 slides to the right under the limitation of the positioning slide 211, and when the trigger 3 rotates to the needle-assisting position, the positioning post 311 moves to the trigger end 217.

In this embodiment, the assembly manner of the transmission member 21 and the pushing member 22 is not specifically limited, and in a preferred embodiment, as shown in fig. 7 and 8, the transmission member 21 has a first clamping portion 218, and the pushing member 22 has a second clamping portion 222 that is matched with the first clamping portion 218, so that the transmission member 21 and the pushing member 22 are clamped and fixed. Of course, the transmission part 21 and the pushing member 22 may be fixedly connected by other means, such as magnetic fixation, screw connection, etc.

In another embodiment, the transmission member 21 and the pushing member 22 are integrally formed, so as to simplify the structure of the needle assisting assembly 2, omit the assembling step, and improve the assembling efficiency.

Further, as shown in fig. 6, a positioning rib 212 is disposed at the top end of the transmission member 21, the positioning rib 212 cooperates with the surface of the pushing member 22 to form a positioning slide 211, and the positioning rib 212 is provided with a avoiding notch 214, so that the positioning post 311 can enter the positioning slide 211 from the avoiding notch 214.

Specifically, as shown in fig. 7 and 8, the pushing member 22 is provided with at least two channels, and the channel wall of each channel is provided with a second clamping portion 222, and the driving member 21 is provided with a first clamping portion 218 corresponding to the second clamping portion 222, so that the driving member 21 and the pushing member 22 form a clamping connection at a plurality of positions, the connection strength is improved, the coaxiality of the driving member 21 and the pushing member is ensured, and the inclination is avoided.

Preferably, as shown in fig. 5 and 6, one of the outer wall of the transmission member 21 and the inner wall of the housing 1 is provided with a guide groove 215 extending toward the opening, and the other is provided with a guide projection 12 engaged with the guide groove 215.

The guide groove 215 cooperates with the guide protrusion 12 to limit the movement of the driving member 21 and the pushing member 22, so that the driving member and the pushing member can only move along the axial direction of the housing 1, and the movement reliability of the needle assisting assembly 2 is improved.

Preferably, as shown in fig. 6, the guide grooves 215 are provided in plurality and uniformly spaced along the circumferential direction of the transmission member 21, and the guide protrusions 12 are provided in one-to-one correspondence with the guide grooves 215.

As shown in fig. 1 and 10, the skin fixing base 5 includes a base 51, a sensor 52, and a sensor electronic unit 53, the sensor 52 is fixed to the base 51, and the sensor electronic unit 53 is detachably connected to the base 51.

As shown in fig. 10, the stylus of the sensor 52 protrudes outside the skin anchor 5, the puncture member 23 penetrates the skin anchor 5, and the stylus of the sensor 52 is accommodated inside the puncture member 23.

One side of the skin anchor 5 is provided with an adhesive sheet which is capable of adhering to the skin surface of a patient when it is in contact with the patient's skin, so that after implantation is completed, the stylus of the internal sensor 52 extends under the skin of the patient, and the skin anchor 5 is fixed to the skin surface of the patient.

In use of the monitoring device of the present utility model, when the user triggers an implantation procedure, the needle assembly 2 and the skin anchor 5 move synchronously together from the first distal position to the first proximal position, whereupon the piercing member 23 pierces the patient's skin and the sensor 52 is implanted subcutaneously in the patient with the stylus.

When implantation is completed, the unlocking structure releases the limit of the limit structure, so that the puncture member 23 alone retracts to the second distal end position, and needle withdrawing operation is completed. Finally, the user removes the housing assembly, leaving the skin anchor 5 on the patient's skin surface.

It should be noted that, the assembly mode of the sensor electronic unit 53 and the base 51 is not particularly limited, and may be one of the following embodiments:

Example 1: in this embodiment, the sensor electronic unit 53 and the base 51 are detachably connected before leaving the factory, so that the sensor electronic unit 53 and the sensor 52 can be mounted to the base 51 step by step, and thus step sterilization can be achieved, for example, the sensor 52 is fixed to the base 51, after the sensor 52 is subjected to radiation sterilization, the sensor electronic unit 53 is mounted to the base 51, and then gas sterilization is performed, so that damage to the sensor 52 and the sensor electronic unit 53 caused by cross sterilization to different degrees is avoided.

When the monitoring device leaves the factory, the sensor electronic unit 53 and the base 51 are fixed, and after the implantation of the user is finished, the sensor electronic unit 53 is not required to be manually installed, so that operation steps of the user are saved, and the use experience is improved.

Example 2: in this embodiment, the sensor electronic unit 53 and the base 51 are detachable from the factory, so when the skin fixing base 53 is fixed on the needle assisting component 2, the sensor electronic unit 53 is not included thereon, and after implantation by a user, the sensor electronic unit 53 needs to be manually mounted on the base 51, and the skin fixing base 5 can realize the blood glucose monitoring function.

Further, as shown in fig. 11 and 12, the base 51 is provided with a first clamping rib 512 along its circumferential direction, the sensor electronic unit 53 is correspondingly provided with a second clamping rib 531, the base 51 has an installation position 511 for installing the sensor 52, and the sensor electronic unit 53 has a positioning structure 532 adapted to the shape of the installation position 511.

The mode of clamping and fixing is adopted, so that the assembly is simpler and more convenient, and the assembly and the disassembly are convenient. Of course, the base 51 and the sensor electronic unit 53 may be fixed by other means, such as screw fixation, magnetic fixation, etc., which are not particularly limited herein.

By providing the positioning structure 532 corresponding to the shape of the mounting position 511 on the sensor electronic unit 53, the mounting of the sensor electronic unit 53 is performed. Specifically, as shown in fig. 11 and 12, the mounting position 511 has a positioning ring protruding upward, and the sensor electronic unit 53 is correspondingly provided with a positioning groove to form a positioning structure 532, so that the positioning difficulty of the sensor electronic unit 53 is reduced, and the assembly efficiency is further improved.

The utility model can be realized by adopting or referring to the prior art at the places which are not described in the utility model.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (16)

1. A continuous blood sugar monitoring device comprises a shell, a needle assisting component arranged in the shell and a skin fixing seat, wherein one end of the shell is provided with an opening,

the monitoring device further comprises a trigger cap disposed at one end of the needle assist assembly, the trigger cap having an abutment portion for contacting the skin, the needle assist assembly being movable synchronously with the trigger cap toward the opening and relative to the trigger cap when the abutment portion is stopped so that the needle assist assembly is movable relative to the trigger cap to have a first proximal position and a first distal position; the skin fixing seat is fixed on one end of the needle assisting component facing the opening, and one end of the skin fixing seat and the lower end of the needle assisting component are positioned on the same end face.

2. The continuous blood glucose monitoring device of claim 1, wherein the device comprises a plurality of sensors,

the trigger cover is arranged inside the shell, the shell is provided with a limiting part, the trigger cover is provided with a stop part, and the stop part is in butt joint with the limiting part.

3. The continuous blood glucose monitoring device of claim 2, wherein,

one end of the trigger cover and one end of the shell are positioned on the same end face.

4. The continuous blood glucose monitoring device of claim 1, wherein the device comprises a plurality of sensors,

the trigger cover is provided with a first clamping structure, the needle assisting assembly is provided with a second clamping structure, and the first clamping structure is matched with the second clamping structure in a clamping way.

5. The continuous blood glucose monitoring device of claim 1, wherein the device comprises a plurality of sensors,

one of the outer wall of the trigger cover and the inner wall of the shell is provided with a guide rib position, the other one of the outer wall of the trigger cover and the inner wall of the shell is provided with a guide groove matched with the guide rib position, and the guide groove and the guide rib position extend towards the opening.

6. The continuous blood glucose monitoring device of claim 1, wherein the device comprises a plurality of sensors,

the needle assist assembly comprises a pushing member and a puncturing member, the puncturing member is capable of moving relative to the pushing member to have a second proximal end position and a second distal end position, the pushing member is provided with a limiting structure for limiting the puncturing member to the second proximal end position, the trigger cover is provided with an unlocking structure, and when the needle assist assembly moves to the first proximal end position, the unlocking structure can release the limiting of the limiting structure so that the puncturing member moves to the second distal end position.

7. The continuous blood glucose monitoring device of claim 6, wherein,

the pushing piece is provided with a guide part, a guide channel is arranged in the guide part, the puncture piece is arranged in the guide channel, the limiting structure comprises a abutting wing arranged on the guide part, the abutting wing is provided with a stop protrusion protruding towards the inside of the guide channel, and the stop protrusion is limited with the puncture piece stop to limit the movement of the puncture piece to the distal end position.

8. The continuous blood glucose monitoring device of claim 7,

the puncture piece is provided with a matching plane, and the stop protrusion is in abutting matching with the matching plane.

9. The continuous blood glucose monitoring device of claim 7,

the unlocking structure comprises an unlocking convex rib arranged on the trigger cover, and the unlocking convex rib can prop against the abutting wing to enable the stop protrusion to move and separate from the puncture piece.

10. The continuous blood glucose monitoring device of claim 9, wherein the device comprises a plurality of sensors,

the trigger cover is provided with a slide way, the abutting wing is positioned in the slide way and moves along the slide way, and the unlocking convex rib is positioned at one end of the slide way.

11. The continuous blood glucose monitoring device of claim 7,

the abutting wings extend obliquely towards the outer side of the guide channel to form a fixed end and a free end, the stop protrusions are arranged at the free end, and the unlocking structure can abut against the free end.

12. The continuous blood glucose monitoring device of claim 7,

one of the inner wall of the guide channel and the outer wall of the puncture member is provided with a guide sliding strip, and the other one of the guide channel and the outer wall of the puncture member is provided with a guide sliding groove matched with the guide sliding strip.

13. The continuous blood glucose monitoring device of claim 6, wherein,

the puncture part comprises a needle body and a needle seat, the monitoring device further comprises a tension spring, one end of the tension spring is connected with the needle seat, and the other end of the tension spring is connected with the pushing part.

14. The continuous blood glucose monitoring device of claim 1, wherein the device comprises a plurality of sensors,

the monitoring device further comprises a trigger piece, the trigger piece is provided with a connecting end and an operating end, the connecting end is hinged with the shell, the trigger piece is further provided with a pushing part, and the pushing part can push the auxiliary needle assembly to enable the auxiliary needle assembly to move towards the opening.

15. The continuous blood glucose monitoring device of claim 14, wherein the device comprises a plurality of sensors,

the needle assisting assembly comprises a pushing part and a transmission part arranged in the shell, the transmission part is fixedly connected with the pushing part, the pushing part is provided with a positioning column, the transmission part is provided with a positioning slide way, the positioning column is arranged in the positioning slide way, and when the operation end rotates around the connection end, the positioning column can slide in the positioning slide way.

16. The continuous blood glucose monitoring device of claim 1, wherein the device comprises a plurality of sensors,

the skin fixing seat comprises a base, a sensor and a sensor electronic unit, wherein the sensor is fixed on the base, and the sensor electronic unit is detachably connected with the base.

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