CN113331831A

CN113331831A - Sensor for continuous blood glucose monitoring

Info

Publication number: CN113331831A
Application number: CN202110434021.4A
Authority: CN
Inventors: 古智键
Original assignee: Individual
Current assignee: Shenzhen Aoji Health Technology Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-09-03
Anticipated expiration: 2041-04-22
Also published as: CN113331831B

Abstract

The invention relates to the technical field of medical equipment and discloses a sensor for continuous blood glucose monitoring, which comprises a protective shell, a substrate and a biosensor, wherein the substrate is deformable, the protective shell is fixed with limbs through a fixing belt, a flip cover is embedded in the middle of the protective shell, and a function board is arranged in the middle of the flip cover. This last sensor for blood sugar monitoring, when receiving external force, the slider realizes the motion and adjusts, make socket and biosensor's position remain unchanged, and then guarantee that biosensor does not receive external force to influence, avoid the injury that biosensor removed the production, meanwhile, when not atress, the protective housing, base plate and biosensor become a whole, tie near biosensor's muscle, secondly, when daily use, the fixed band is in comparatively lax state, give the better impression of wearing of person of wearing, and when suffering great effort suddenly, trigger the fixed band and tighten up, guarantee sufficient constraint power.

Description

Sensor for continuous blood glucose monitoring

Technical Field

The invention relates to the technical field of medical equipment, in particular to a sensor for continuous blood glucose monitoring.

Background

Many clinical medical experiments have confirmed that patients with type 1 and type 2 diabetes mellitus have an increased risk of chronic complications when their blood Glucose levels are elevated, and therefore, Continuous Monitoring of the blood Glucose levels of patients is required, in which a biosensor having electrodes and an enzyme that reacts with Glucose is left subcutaneously to continuously measure the concentration of Glucose contained in interstitial fluid under the skin in Continuous blood Glucose measurement (CGM: Continuous Glucose Monitoring).

The biosensor left under the skin is fixedly connected with the external shell. Therefore, when the contact pad is affected by an external force, there is a risk of damaging surrounding tissues, and then, the position under the skin and outside the skin is displaced by the movement of muscles, which may impair a good contact state between the contact pad and the terminal.

Secondly, the diabetic is usually not absolutely bedridden, so the patient has a great range of motion, the sensor shell and the body are well fixed, generally speaking, the connection force of the colloid adhered to the skin is small, the colloid is easy to fall off, and the binding of the colloid and the body can influence the blood circulation at the binding part, so that the discomfort is generated, and therefore, the fixing mode needs to be improved.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the technical scheme of the sensor for continuously monitoring the blood sugar, which has the advantages of isolating the influence of external force, better protection effect, self-adjustment of binding force, realization of comfort, reliability, perfect unification and the like, and solves the problems provided by the background technology.

The invention provides the following technical scheme: a sensor for continuous blood glucose monitoring comprises a protective shell, a substrate and a biosensor, wherein the substrate is deformable, the protective shell is fixed with limbs through a fixing band, a flip cover is embedded in the middle of the protective shell, a function board is arranged in the middle of the flip cover, a measuring machine and a data machine are fixedly connected to the top of the function board, a sliding rail is arranged at the bottom of the function board, a sliding block is movably connected to the sliding rail, a driving device capable of moving quantitatively is arranged on the sliding block, a socket is arranged at the bottom of the function board, the substrate is adhered to skin through an adhesive tape, one end of the biosensor is located under the skin, the other end of the biosensor penetrates through the substrate and is connected with the socket through a lead, the socket is electrically connected with a data machine, an excitation coil is arranged on the substrate, a receiving coil corresponding to the excitation coil is arranged at the bottom of the function board, and a driver in the sliding block drives the socket to move according to current change, the relative position of the exciting coil and the receiving coil is kept unchanged, and a pressing sleeve for sleeving the biosensor is arranged on the substrate.

Preferably, the fixing strap is connected with a tensioning piece, the tensioning piece comprises a tensioning strap fixedly connected with two ends of the fixing strap, the tensioning strap bypasses a guide wheel and is fixedly connected with a movable column, the movable column penetrates through a protective shell and is movably connected with the protective shell, a pre-tightening spring is arranged between the movable column and the protective shell, the tensioning strap is tensioned when the pre-tightening force is released, one opposite side of the two movable columns is respectively connected with a bendable locking piece A and a locking piece B, the inner wall of the protective shell is provided with a wedge, a trigger electromagnet is arranged on the locking piece A or the locking piece B, the trigger electromagnet is attracted to enable the locking piece A and the locking piece B to be separated from each other when the wedge is powered on when the relative displacement of the excitation coil and the receiving coil is greater than a threshold value.

Preferably, the slide rail is i-shaped, the slide block comprises a moving block, connecting plates are arranged on two sides of the moving block and are respectively movably connected with two sides of the slide rail, a graphite plate electrically connected with the socket is arranged on the connecting plates, an electrode plate electrically connected with the modem is arranged on the slide rail, a driving electromagnet is arranged at the bottom of the moving block, a friction plate is arranged between the moving block and the bottom of the slide rail and is made of a magnetic material, the driving electromagnet is electrified when the current of the receiving coil changes, the friction plate is separated from the slide rail when the electrified suction force of the driving electromagnet is enough, a pressure column is arranged at the bottom of the function plate, the function plate can move downwards in a pressing mode and has two fixed positions, and the pressure column of the function plate presses the pressure sleeve when the function plate is at the lowest position.

Preferably, the number of the driving electromagnets is two, the driving electromagnets are respectively located on two sides of the limbs, magnetic separation sheets are arranged between the two driving electromagnets, magnetic sheets are arranged on the slide rail at intervals, and the driving electromagnets on the two sides are respectively electrified to generate magnetic force action with the magnetic sheets.

Preferably, the substrate is provided with a gap for the biosensor to pass through, the bottom of the pressing sleeve is provided with a groove body capable of accommodating the biosensor, the width of the groove body is gradually narrowed from bottom to top, and the outer side wall of the upper part of the pressing sleeve is provided with a thread groove.

Preferably, an air bag is embedded in the groove body of the pressing sleeve.

The invention has the following beneficial effects:

1. this last sensor for blood sugar monitoring, when receiving external force, the slider realizes the motion regulation, make socket and biosensor's position remain unchanged, protective housing protection base plate and biosensor directly suffer external force promptly, the effort that the protective housing received can not transmit on biosensor under the effect of slider unloading simultaneously, and then guarantee that biosensor does not receive the external force influence, avoid the injury that biosensor removed the production, meanwhile, when not bearing the force, the protective housing, base plate and biosensor become a whole, bind near biosensor's muscle, and then guarantee the good contact of link.

2. This last sensor for blood sugar monitoring, when daily use, the fixed band is in comparatively lax state, gives the better impression of wearing of person of wearing, because the removal that lax brought is absorbed by the removal of slider, can guarantee security and reliability, and when suffering great effort suddenly, triggers the fixed band and tightens up, guarantees sufficient constraint power, realizes wearing the perfect unity of comfortable and reliability.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic structural view of a slider according to the present invention;

FIG. 4 is a schematic view of the use of the press sleeve, substrate and biosensor of the present invention;

FIG. 5 is a side schematic view of a press sleeve of the present invention;

FIG. 6 is a schematic top view of a substrate according to the present invention.

In the figure: 1. a protective shell; 2. a substrate; 3. fixing belts; 4. a cover is turned; 5. a function board; 6. a slider; 61. a moving block; 62. a connecting plate; 63. a graphite plate; 64. an electrode plate; 65. a friction plate; 66. driving an electromagnet; 67. a magnetic shield sheet; 7. a slide rail; 8. a socket; 9. a biosensor; 10. pressing the sleeve; 11. a field coil; 12. a receiving coil; 13. a tension member; 131. tensioning the belt; 132. a guide wheel; 133. Moving the column; 134. pre-tightening the spring; 135. a locking piece A; 136. a locking member B; 137. triggering the electromagnet; 138. a wedge iron; 14. and (5) pressing the column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a sensor for continuous blood glucose monitoring comprises a protective shell 1, a substrate 2 and a biosensor 9, wherein the substrate 2 is deformable to ensure close contact with skin, the protective shell 1 is fixed with limbs through a fixing band 3, a flip 4 is embedded in the middle of the protective shell 1, specifically, one end of the flip 4 is hinged with the protective shell 1, the other end of the flip is fixed with the protective shell 1 through a buckle, a function board 5 is arranged in the middle of the flip 4, a measuring machine and a data machine are fixedly connected with the top of the function board 5, the measuring machine and the data machine transmit data with the biosensor 9, and analyze data of the substrate 2 to obtain a blood glucose value, a sliding rail 7 is arranged at the bottom of the function board 5, the sliding rail 7 is movably connected with a sliding block 6, a driving device capable of moving quantitatively is arranged on the sliding block 6, and the position of the connecting position is kept consistent with that of the, the biosensor 9 is ensured to be in an unstressed state, the socket 8 is arranged at the bottom of the function board 5, the base board 2 is adhered to the skin through an adhesive tape, one end of the biosensor 9 is positioned under the skin, the other end of the biosensor 9 penetrates through the base board 2 and is connected with the socket 8 through a lead, the socket 8 is electrically connected with a data machine, the interference of the lead when the biosensor 9 is implanted under the skin can be reduced through the row-inserting connection, the excitation coil 11 is arranged on the base board 2, the receiving coil 12 corresponding to the excitation coil 11 is arranged at the bottom of the function board 5, the relative position change of the excitation coil 11 and the receiving coil 12 brings the current change, the driver in the slide block 6 drives the socket 8 to move according to the current change, the relative position of the excitation coil 11 and the receiving coil 12 is kept unchanged, then the relative position of the socket 8 and the biosensor 9 is kept unchanged, and the interference of an external force to the biosensor 9 is reduced, the substrate 2 is provided with a pressing sleeve 10 for sheathing the biosensor 9, and the pressing sleeve 10 further protects the biosensor 9 from external force.

Referring to fig. 2, wherein the fixing strap 3 is connected to a tightening member 13, the tightening member 13 includes a tightening strap 131 fixedly connected to both ends of the fixing strap 3, the tightening strap 131 is fixedly connected to the moving post 133 by bypassing the guide wheel 132, the moving post 133 penetrates the protective shell 1 and is movably connected to the protective shell 1, a pre-tightening spring 134 is disposed between the moving post 133 and the protective shell 1, and the tightening strap 131 is tightened when the pre-tightening force is released, one side of the two moving posts 133 opposite to each other is respectively connected to a flexible locking member a135 and a locking member B136, the locking member a135 and the locking member B136 can be engaged with each other to limit the release of the pre-tightening force, a wedge 138 is disposed on the inner wall of the protective shell 1, a trigger electromagnet 137 is disposed on the locking member a135 or the locking member B136, when the wedge 138 is powered on, the trigger electromagnet 137 is attracted to separate the locking member a135 and the locking member B136 from each other, the pre-tightening force is released to move outward, make taut belt 131 taut, and then make fixed band 3 tighten with limbs, ensure fixedly, and then avoid the continuation motion of protective housing 1, wedge 138 is circular telegram when excitation coil 11 and receiving coil 12's relative displacement is greater than the threshold, and slider 6's adjustment effect can't restrict relative movement back promptly, triggers protective housing 1 and tightens, and then avoids the further removal of base plate 2.

Referring to fig. 3, wherein the slide rail 7 is i-shaped, the slide block 6 includes a moving block 61, two sides of the moving block 61 are respectively provided with a connecting plate 62, the connecting plate 62 is provided with a graphite plate 63 electrically connected to the socket 8, the slide rail 7 is provided with an electrode plate 64 electrically connected to the modem, the graphite plate 63 slides on the electrode plate 64, graphite reduces sliding friction force and can maintain normal transmission of electric power, the bottom of the moving block 61 is provided with a driving electromagnet 66, a friction plate 65 is arranged between the moving block 61 and the bottom of the slide rail 7, the bottom of the friction plate 65 is provided with a pressing spring, under natural conditions, the spring presses the friction plate 65 on the bottom of the slide rail 7 to further limit sliding of the slide block 6, the friction plate 65 is made of magnetic material, the driving electromagnet 66 is energized when the current of the receiving coil 12 changes, and the attraction force after the driving electromagnet 66 is energized is sufficient, make slider 6 can freely slide, maintain fixedly when protective housing 1 does not move under the external force, the bottom of function board 5 is equipped with compression leg 14, function board 5 presses and can move down and have two fixed positions, and compression leg 14 compresses tightly pressure cover 10 when function board 5 is the extreme low position, and base plate 2 forms a whole through socket 8 and protective housing 1 this moment, and the pressure to the muscle suppresses the muscle motion, and then guarantees the reliability that biosensor 9 connects.

Referring to fig. 3, the number of the driving electromagnets 66 is two, and the driving electromagnets 66 are respectively located at two sides of the limb direction, a magnetic separation sheet 67 is disposed between the two driving electromagnets 66, magnetic sheets are disposed on the slide rail 7 at intervals, the driving electromagnets 66 at two sides are respectively powered on and generate magnetic force with the magnetic sheets, so as to drive the slide block 6 to respectively move in two directions, the magnetic force is equal to or slightly greater than the friction force of the slide block 6, and the position of the slide block 6 and the relative position of the biosensor 9 are kept unchanged.

Referring to fig. 4-6, a gap for passing the biosensor 9 is formed in the substrate 2, a groove for accommodating the biosensor 9 is formed in the bottom of the pressing sleeve 10, and the width of the groove gradually narrows from bottom to top, so that the biosensor 9 can be conveniently placed into the pressing sleeve 10, the pressing sleeve 10 can clamp the biosensor 9, the stability of the biosensor 9 is maintained, a thread groove is formed in the outer side wall of the upper portion of the pressing sleeve 10, and the lead is connected with the socket 8 after being wound around the pressing sleeve 10 for several turns, thereby preventing the lead from generating force on the biosensor 9.

Wherein, the inside of the groove body of the pressing sleeve 10 is embedded with an air bag, after the biosensor 9 is placed, the biosensor 9 is firstly fixed by hands, and then the air is refilled to clamp the biosensor 9, so that the disturbance to the biosensor 9 when the pressing sleeve 10 is sleeved into the biosensor 9 is reduced.

The working principle and the working process of the invention are as follows:

firstly, implanting one side of a biosensor 9 with electrodes and enzyme under skin, firstly, preliminarily fixing the biosensor 9 by using an adhesive tape, aligning a gap of a substrate 2 and a groove body of a pressing sleeve 10 with the biosensor 9, pressing the skin near the biosensor 9 integrally after being sleeved, fixing the substrate 2 by using the adhesive tape, binding a protective shell 1, arranging cross lines for alignment on the surface of the substrate 2, arranging marking lines corresponding to the cross on the protective shell 1, aligning the lines with the lines, preliminarily binding the protective shell 1, opening a flip cover 4, winding lead wires around the pressing sleeve 10, inserting the lead wires into a socket 8, clamping the flip cover 4, pressing a function board 5, pressing the pressing sleeve 10 by the socket 8, wherein the socket 8 is made of an elastic material, when limbs move greatly or the protective shell 1 is subjected to external force, the protective shell 1 moves relative to the limbs, the positions of an excitation coil 11 and a receiving coil 12 are changed, triggering a driving mechanism in a sliding block 6 to start, make slider 6 reverse motion after actuating mechanism starts, maintain slider 6 and base plate 2's position relatively unchangeable, and then guarantee that biosensor 9 receives external force less, and when receiving great range removal, be about to exceed slider 6 adjustment upper limit, trigger the popping out of removal post 133 in the tensioning piece 13, make fixed band 3 tighten up, strengthen the fixed power of protective housing 1 and limbs, guarantee that the position of protective housing 1 does not change.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a last sensor for blood glucose monitoring, includes protective housing (1), base plate (2) and biosensor (9), its characterized in that: the base plate (2) is deformable, the protective shell (1) is fixed with limbs through a fixing band (3), a turnover cover (4) is embedded in the middle of the protective shell (1), a function board (5) is arranged in the middle of the turnover cover (4), a measuring machine and a data machine are fixedly connected to the top of the function board (5), a sliding rail (7) is arranged at the bottom of the function board (5), a sliding block (6) is movably connected to the sliding rail (7), a driving device capable of moving quantitatively is arranged on the sliding block (6), a socket (8) is arranged at the bottom of the function board (5), the base plate (2) is adhered to the skin through an adhesive tape, one end of the biosensor (9) is located under the skin, the other end of the biosensor passes through the base plate (2) and is connected with the socket (8) through a lead, the socket (8) is electrically connected with the data machine, a magnet exciting coil (11) is arranged on the base plate (2), the bottom of function board (5) is equipped with receiving coil (12) that correspond with excitation coil (11), the driver in slider (6) moves according to current variation drive socket (8), makes excitation coil (11) and receiving coil (12) relative position maintain unchangeable, be equipped with on base plate (2) and entangle pressure cover (10) of biosensor (9).

2. The sensor for continuous blood glucose monitoring according to claim 1, wherein: the fixing band (3) is connected with a tensioning piece (13), the tensioning piece (13) comprises a tensioning belt (131) fixedly connected with two ends of the fixing band (3), the tensioning belt (131) bypasses a guide wheel (132) and is fixedly connected with a movable column (133), the movable column (133) penetrates through a protective shell (1) and is movably connected with the protective shell (1), a pre-tightening spring (134) with pre-tightening is arranged between the movable column (133) and the protective shell (1), the tensioning belt (131) is tensioned when the pre-tightening force is released, one sides opposite to the two movable columns (133) are respectively connected with a bendable locking piece A (135) and a locking piece B (136), a wedge iron (138) is arranged on the inner wall of the protective shell (1), a triggering electromagnet (137) is arranged on the locking piece A (135) or the locking piece B (136), and the wedge iron (138) attracts the triggering electromagnet (137) to separate the locking piece A (135) and the locking piece B (136) from each other when being electrified, the wedge (138) is energized when the relative displacement of the excitation coil (11) and the receiving coil (12) is greater than a threshold value.

3. The sensor for continuous blood glucose monitoring according to claim 1, wherein: the sliding rail (7) is I-shaped, the sliding block (6) comprises a moving block (61), connecting plates (62) are arranged on two sides of the moving block (61) and are respectively movably connected with two sides of the sliding rail (7), graphite plates (63) electrically connected with the sockets (8) are arranged on the connecting plates (62), electrode plates (64) electrically connected with the data machine are arranged on the sliding rail (7), a driving electromagnet (66) is arranged at the bottom of the moving block (61), a friction plate (65) is arranged between the moving block (61) and the bottom of the sliding rail (7), the friction plate (65) is made of magnetic materials, the driving electromagnet (66) is electrified when the current of the receiving coil (12) changes, the friction plate (65) is separated from the sliding rail (7) when the attraction force after the driving electromagnet (66) is electrified is enough, and a pressing column (14) is arranged at the bottom of the functional plate (5), the function board (5) can move downwards and is provided with two fixed positions, and the pressing column (14) presses the pressing sleeve (10) when the function board (5) is at the lowest position.

4. The sensor for continuous blood glucose monitoring according to claim 3, wherein: the quantity of driving electromagnet (66) is two sets of, and is located the both sides for the limbs direction respectively, two be equipped with between driving electromagnet (66) and separate magnetic sheet (67), the interval is equipped with the magnetic sheet on slide rail (7), driving electromagnet (66) of both sides are circular telegram respectively and produce the magnetic force effect between the magnetic sheet.

5. The sensor for continuous blood glucose monitoring according to claim 1, wherein: the base plate (2) is provided with a gap for the biosensor (9) to pass through, the bottom of the pressing sleeve (10) is provided with a groove body capable of accommodating the biosensor (9), the width of the groove body is gradually narrowed from bottom to top, and the outer side wall of the upper portion of the pressing sleeve (10) is provided with a thread groove.

6. The sensor for continuous blood glucose monitoring according to claim 1, wherein: an air bag is embedded in the groove body of the pressing sleeve (10).