CN219846580U

CN219846580U - Sensor assembly, needle box and special painless applicator

Info

Publication number: CN219846580U
Application number: CN202223335934.XU
Authority: CN
Inventors: 毛建; 唐荣俊; 刘飞飞
Original assignee: Tangjian Medical Technology Suzhou Co ltd
Current assignee: Tangjian Medical Technology Suzhou Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-10-20
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a sensor assembly, which comprises a monitoring probe, a sensor waterproof soft rubber, a plastic base and a hard needle, wherein the monitoring probe is connected by a transverse connecting part and a vertical implanting part to form an L shape, the monitoring probe is not easy to break after being implanted into a human body, the monitoring probe is in side contact with conductive silica gel, the connection is firm, the shaking is not easy, and the data stability is good. The utility model also discloses a needle box which comprises the sensor component, can reliably store the sensor component and is convenient to use. The utility model also discloses a special painless applicator, which has few parts and simple structure; the assembly is simple, and all parts can be assembled without a hot melting process; false triggering can be prevented; the needle is assisted by one spiral spring, the whole needle assisting process is quicker, pain is reduced to the greatest extent, and painless needle assisting is realized.

Description

Sensor assembly, needle box and special painless applicator

Technical Field

The present utility model relates to a sensor assembly, a needle cartridge containing the sensor assembly, and a special painless applicator.

Background

Monitoring of blood glucose is important to diabetics and blood glucose levels are useful in assessing conditions of glucose metabolism disorders in diabetics. Currently, blood glucose detection can be divided into in vitro detection after blood sampling and real-time detection by an implantable blood glucose sensor. When blood glucose is controlled by the method of in vitro detection after blood sampling, blood must be sampled several times a day, which places a heavy burden on the spirit and flesh of the patient, on the other hand, blood glucose values at the time of measurement can only be provided due to the limited number of measurements, and fluctuation of blood glucose values in one day cannot be completely reflected. Meanwhile, due to the limitation of the measurement times, the change trend and direction of the blood sugar where the measured value is positioned are not clear, so that the dosage of insulin is adjusted according to the measured blood sugar value, and the possibility of occurrence of hypoglycemia is increased. The dynamic blood sugar detection can effectively solve the problems, the practical dynamic blood sugar monitoring system can not only give the blood sugar value in real time, but also display the change trend of the blood sugar, and can more accurately judge the change and trend of the blood sugar by combining with the daily life work and rest of a patient, so that the method for detecting the blood sugar in real time by using the implantable blood sugar sensor is more and more popular.

At present, the sensor assembly which is only implanted in subcutaneous tissue and can be used for clinical continuous blood sugar monitoring products is verified to a certain extent technically, therefore, the field needs to implant a small and soft flexible detection part of a biological sensor under the skin, a puncture tube penetrates into the skin at extremely high speed, pain is reduced to extremely low, a sensor electrode part is remained under the skin, continuous monitoring is realized, and the upper part of the sensor skin needs to be fixed with the skin.

Referring to fig. 1, currently, a monitoring probe 1 'of a sensor in a glucose monitoring device sold in the market is generally manufactured by adopting a screen printing mode and is in a strip-shaped plane structure, and when the monitoring probe is installed, the monitoring probe needs to be bent at a certain angle to form an implanted part b' implanted into a human body and a connecting part a 'connected with an electronic system, after the monitoring probe is worn, various coatings on the bent part A' -A 'are easily affected due to the bending formation of the bent part A' -A 'during the later installation, the bent part A' -A 'is easily broken in the implantation and wearing process, the connecting part a' is externally connected with the electronic system through a conductive contact which is in press connection with the connecting part a ', the conductive contact is flatly pressed on an electrode of the connecting part a', the implanted part is easily rocked in a body due to weak press connection, the data background noise is large, and the data stability is easily affected.

Moreover, blood glucose continuous monitoring products generally include a needle aid, a sensor and a transmitter, the transmitter is generally installed in the needle aid, and when the blood glucose continuous monitoring product is used, the needle aid and the sensor with the transmitter are required to be installed together by a user, the needle aid, the sensor and the transmitter are sold as a set of equipment, and the needle aid, the sensor and the transmitter are disposable products, so that the cost is high. The needle aid is used for implanting a flexible detection part of a sensor into the skin, the part structure of the needle aid in the prior art is complex, two springs are generally needed to realize the whole needle aid process, the pre-compression potential energy of one spring is used for delivering a needle, and the pre-compression potential energy of the other spring is used for withdrawing the needle; or the hard needle and the soft needle are sent into the body by manpower, the user presses the whole needle assisting device, the detection part of the sensor is implanted into the skin by means of larger manpower, and then the needle is withdrawn by the needle withdrawing mechanism in the needle assisting device. In the use process, the discomfort brought to the user due to too great or too small force of human factors often exists; the needle feeding and the needle withdrawing are completed through two mechanisms, the hard needle retention time in the needle assisting process is about 40-50 milliseconds, the hard needle retention time is long, and the hard needle can be painful during injection. And in the use process, if a user touches the start button of the needle aid device by mistake, the needle aid device can be directly started to work, so that the whole set of blood sugar continuous monitoring products are invalid.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a sensor assembly, wherein a monitoring probe is directly designed into an L shape, is not easy to break after being implanted into a human body, is in side contact with conductive silica gel, is firm in connection, is not easy to shake, and has good data stability.

It is another object of the present utility model to provide a needle cartridge containing the above sensor assembly that can reliably store the sensor assembly for convenient use.

Still another object of the present utility model is to provide a special painless applicator with few parts, simple structure, simple assembly, capable of preventing false triggering, and more stable and reliable whole needle assisting process; the needle is assisted by one spiral spring, the whole needle assisting process is quicker, pain is reduced to the greatest extent, and painless needle assisting is realized.

The technical scheme for achieving the purpose is as follows: a sensor assembly comprising a monitoring probe, a sensor waterproof flexible gel, a plastic base and a hard needle, wherein:

the monitoring probe is connected by a transverse connecting part and a vertical implanting part to form an L shape, three electrodes are arranged on the transverse connecting part and are respectively positioned on the front side surface and the rear side surface of the transverse connecting part;

Three conductive silica gel mounting holes are formed in the top end of the waterproof soft rubber of the sensor, the three conductive silica gel mounting holes are distributed in a triangular shape, and one conductive silica gel is arranged in each conductive silica gel mounting hole;

a strip-shaped monitoring probe penetration channel is inwards formed in the side wall of the waterproof soft rubber of the sensor, the monitoring probe penetration channel is positioned among the three conductive silica gel mounting holes, and the monitoring probe penetration channel is respectively communicated with the three conductive silica gel mounting holes;

the transverse connecting part of the monitoring probe is inserted into the penetrating channel of the monitoring probe, and three electrodes on the transverse connecting part are in interference fit contact with the side surfaces of the three conductive silica gel in a one-to-one correspondence manner;

the plastic base is provided with a waterproof soft rubber mounting groove and a hard needle jack which is communicated up and down;

the sensor waterproof soft rubber is arranged in the waterproof soft rubber mounting groove, and the vertical implantation part of the monitoring probe is inserted into the hard needle jack;

a notch groove which is vertically arranged is formed in the side wall of the hard needle, and the hard needle is inserted through the hard needle jack and sleeved outside the vertical implantation part of the monitoring probe;

the top of the hard needle is provided with a hard needle fixing table, and the hard needle fixing table is positioned above the hard needle jack.

In the sensor assembly, the joint of the needle tip of the hard needle and the groove walls at two sides of the notch groove is arc-shaped.

The other technical scheme for realizing the aim is as follows: a needle cartridge comprising a needle cartridge bottom housing, a needle cartridge top housing and the sensor assembly described above, wherein:

a pushing piece is vertically arranged on the inner wall of the needle box bottom shell; a hard needle accommodating groove is formed in the needle box bottom shell;

the needle box upper shell is arranged in the needle box bottom shell, and a sensor component mounting hole which penetrates up and down is formed in the needle box upper shell;

the sensor assembly is disposed in the sensor assembly mounting hole, and a lower portion of a hard needle of the sensor assembly is inserted into the hard needle receiving groove.

In the above needle box, the opening at the upper end of the bottom shell of the needle box is hot-pressed with a sealing aluminum foil.

The third technical scheme for achieving the purpose is as follows: a special painless applicator for pushing a sensor assembly in the needle cartridge and implanting a vertical implant of a monitoring probe of the sensor assembly into human skin, the special painless applicator comprising a needle aid and a transmitter assembly disposed within the needle aid, the needle aid comprising a housing, a spiral spring, a dial, a button, an unlocking push rod, a sliding rail and a transmitter housing, wherein:

The shell is formed by combining a shell A and a shell B into a hollow cavity structure with an opening at the lower end;

the inner wall surface of the shell A is provided with a spring installation round groove, a guide rail sliding groove and a push rod sliding groove, the axial direction of the spring installation round groove is mutually perpendicular to the axial direction of the shell A, and a fixed shaft is coaxially arranged in the spring installation round groove; the guide rail sliding groove consists of two vertical guide rail sliding grooves which are respectively arranged at the two radial sides of the spring installation circular groove; the push rod sliding grooves are vertically arranged, and the push rod sliding grooves are positioned between the spring installation round groove and one of the vertical guide rail sliding grooves;

the outer wall surface of the A shell is provided with a button mounting groove, and one side wall of the A shell is provided with a push rod sliding hole;

the scroll spring is arranged in the spring installation circular groove and sleeved on the fixed shaft; the rotary disc is rotatably sleeved on the fixed shaft, and the annular peripheral wall of the rotary disc is positioned between the scroll spring and the groove wall of the spring mounting circular groove; the inner end of the scroll spring is connected with the fixed shaft; the outer end of the scroll spring is connected with the annular peripheral wall of the turntable;

a turntable boss is arranged on the outer wall surface of the annular peripheral wall of the turntable, and a turntable limiting table is arranged at the bottom of the turntable;

The button is movably arranged in the button mounting groove of the A shell, and the rear end of the button penetrates through the groove bottom of the button mounting groove and extends into the A shell; a button boss is arranged on the inner side wall of the rear end of the button, and in an initial state, the turntable boss is abutted against the button boss;

the front end of the unlocking push rod is inserted into the push rod chute and slides along the push rod chute; one side of the unlocking push rod is inserted into the push rod sliding hole and slides along the push rod sliding hole, and in an initial state, the rear end of the button is abutted against the other side of the unlocking push rod;

the front side of the upper part of the sliding guide rail is provided with a rotary table limiting groove which is transversely arranged, two sides of the sliding guide rail are correspondingly inserted into the two vertical guide rail sliding grooves one by one and slide along the corresponding vertical guide rail sliding grooves, and the rotary table limiting table is inserted into the rotary table limiting groove;

the transmitter fixing shell is coaxially arranged in the shell;

the top end of the emitter fixing shell is connected with the bottom end of the sliding guide rail;

the transmitter assembly is disposed within the transmitter mounting housing;

hard needle mounting holes are formed in the bottom end of the sliding guide rail, and hard needle insertion holes which penetrate up and down are formed in the top end of the emitter fixing shell.

A special painless applicator as described above wherein the emitter assembly comprises an emitter housing and an emitter circuit board assembly disposed within the emitter housing, wherein:

the emitter shell is formed by connecting an upper shell and a lower shell; the bottom end face of the emitter shell is provided with emitter application glue; the lower shell of the emitter shell is provided with a sensor assembly installation position;

the emitter circuit board assembly comprises an emitter circuit board, a Mylar piece, a button cell, an anode nickel piece and a cathode nickel piece, wherein the Mylar piece is arranged at the bottom end of the emitter circuit board; the button battery is positioned at the bottom end of the Mylar film; the negative nickel plate is welded at a negative bonding pad of the transmitter circuit board; the positive electrode nickel plate is welded to a positive electrode bonding pad of the transmitter circuit board, and the positive electrode nickel plate and the negative electrode nickel plate are respectively connected with the button cell;

the upper shell of the emitter shell and the emitter circuit board are respectively provided with a hard needle fixing table perforation;

the transmitter application glue is provided with a sensor assembly perforation.

A special painless applicator as described above wherein upon interfacing the special painless applicator with a sensor assembly within the needle cartridge, the sensor assembly is inserted through a sensor assembly aperture in the emitter application gel into a sensor assembly mounting location on a lower housing portion of the emitter housing;

The hard needle fixing table sequentially penetrates through the hard needle fixing table perforation on the emitter circuit board, the hard needle fixing table perforation on the upper shell of the emitter shell and the hard needle jack at the top end of the emitter fixing shell, and then is clamped in the hard needle mounting hole at the bottom end of the sliding guide rail.

In the above-mentioned special painless applicator, when the special painless applicator is docked with the sensor assembly in the needle box, the push piece on the inner wall of the bottom shell of the needle box pushes one side of the unlocking push rod inserted into the push rod sliding hole to slide upwards, so that the whole unlocking push rod is driven to slide upwards.

A special painless applicator as described above wherein the lower portion of the housing is covered with a bottom cover.

The special painless applicator is characterized in that the bottom end of the inner wall surface of the shell is provided with the emitter fixing shell limiting table, and when the needle aid is used and pulled out, the emitter fixing shell limiting table clamps the emitter fixing shell.

A special painless applicator as described above wherein a downward pointing arrow is provided on a side wall of the housing, and the pointing arrow is provided adjacent to the push rod sliding hole; the upper end of the needle box bottom shell is provided with an indication groove, and the indication groove is arranged adjacent to the push piece.

By adopting the technical scheme of the sensor assembly, the needle box containing the sensor assembly and the special painless applicator, the monitoring probe is directly designed into an L shape in the sensor assembly, is not easy to break after being implanted into a human body, is in side contact with conductive silica gel, is firm in connection, is not easy to shake and has good data stability. The needle box can reliably store the sensor component, and is convenient to use. In the special painless applicator, the parts are few, the structure is simple, the assembly is simple, the false triggering can be prevented, and the whole needle assisting process is more stable and reliable; the needle is assisted by one spiral spring, the whole needle assisting process is quicker, pain is reduced to the greatest extent, and painless needle assisting is realized.

Drawings

FIG. 1 is a schematic diagram of a monitoring probe in a prior art glucose monitoring device;

FIG. 2 is a perspective view of a sensor assembly of the present utility model;

FIG. 3 is a schematic structural view of a monitoring probe of the sensor assembly of the present utility model;

FIG. 4 is a schematic view of the structure of the needle magazine of the present utility model;

FIG. 5 is an exploded view of the needle magazine of the present utility model;

FIG. 6 is a cross-sectional view of the needle magazine of the present utility model;

FIG. 7 is a top view of the needle magazine of the present utility model;

FIG. 8 is a front view of a dedicated painless applicator of the present utility model;

FIG. 9 is an exploded view of the dedicated painless applicator of the present utility model

FIG. 10 is an internal block diagram of a dedicated painless applicator of the present utility model;

FIG. 11 is a cross-sectional view of a dedicated painless applicator of the present utility model;

FIG. 12 is a schematic view of the installation of a spiral spring of the dedicated painless applicator of the present utility model;

FIG. 13 is a schematic view of the installation of the turntable of the dedicated painless applicator of the present utility model;

FIG. 14 is a schematic view of the installation of an unlocking push rod of the dedicated painless applicator of the present utility model;

FIG. 15 is a schematic illustration of the unlocking push rod and button limiting;

FIG. 16 is a schematic view of the installation of the sliding guide of the dedicated painless applicator of the present utility model;

FIG. 17 is a schematic view of the attachment process of the sliding guide rail, the transmitter housing and the transmitter assembly;

FIG. 18 is a schematic structural view of an emitter assembly;

FIG. 19 is a schematic diagram of a configuration of a transmitter circuit board assembly;

FIG. 20 is an exploded view of the transmitter circuit board assembly;

FIG. 21 is a schematic illustration of the interfacing of a dedicated painless applicator with a sensor assembly within a needle cartridge;

FIG. 22 is a cross-sectional view of FIG. 21;

FIG. 23 is a schematic diagram of the operation of the dedicated painless applicator of the present utility model;

FIG. 24 is a comparison of the operation of the turntable stop table of the turntable in the elongated turntable stop slot and the arcuate turntable stop slot (the rotation angle of the turntable is the same);

FIG. 25 is a comparison of the operation of the turntable stop table of the turntable in the elongated turntable stop slot and the arcuate turntable stop slot (the travel of the slide rail is the same);

fig. 26 is a schematic diagram of hard needle retention time detection.

Detailed Description

In order to enable those skilled in the art to better understand the technical scheme of the present utility model, the following detailed description is provided with reference to the accompanying drawings:

referring to fig. 2 and 3, a sensor assembly according to an embodiment of the present utility model includes a monitoring probe 201, a waterproof soft rubber 202, a plastic base 203, and a hard needle 204.

The monitoring probe 201 is connected by a transverse connecting part 211 and a vertical implanting part 212 to form an L shape, three electrodes 213 are arranged on the transverse connecting part 211, and the three electrodes 213 are respectively arranged on the front side surface and the rear side surface of the transverse connecting part 211; the top end of the junction of the lateral connection portion 211 and the vertical implant portion 212 has a boss 214 protruding upward. The three electrodes are a reference electrode, a working electrode and an auxiliary electrode respectively; of the three electrodes, two electrodes are respectively disposed on the front side of the lateral connection portion 211 of the monitoring probe 201, and the remaining one electrode is disposed on the rear side of the lateral connection portion 211 of the monitoring probe 201.

Three conductive silica gel mounting holes are formed in the top end of the sensor waterproof soft rubber 202, the three conductive silica gel mounting holes are distributed in a triangular shape, and each conductive silica gel mounting hole is internally provided with one conductive silica gel 205; a strip-shaped monitoring probe penetration channel is inwards formed in the side wall of the sensor waterproof flexible glue 202, the monitoring probe penetration channel is positioned among the three conductive silica gel mounting holes, and the monitoring probe penetration channel is respectively communicated with the three conductive silica gel mounting holes; the transverse connection portion 211 of the monitoring probe 201 is inserted into the monitoring probe penetration channel, and the three electrodes 213 on the transverse connection portion 211 are in interference fit contact with the side surfaces of the three conductive silica gels 205 in a one-to-one correspondence.

A waterproof soft rubber mounting groove and a hard needle jack which is communicated up and down are formed in the plastic base 203; the sensor waterproof soft rubber 202 is arranged in the waterproof soft rubber mounting groove, and the vertical implantation part 212 of the monitoring probe 201 is inserted into the hard needle jack; a notch groove 241 is formed in the side wall of the hard needle 204, and the hard needle 204 is inserted through the hard needle jack and sleeved outside the vertical implantation part 212 of the monitoring probe 201; a hard needle fixing stage 242 is provided at the tip of the hard needle 204, and the hard needle fixing stage 242 is located above the hard needle insertion hole. The connection 243 between the tip of the hard needle 204 and the two side walls of the notch 241 is arc-shaped, and the connection 243 between the tip of the traditional hard needle 204 and the two side walls of the notch 241 is directly sharp-angled.

In the assembly of the sensor assembly, the monitoring probe 201 is firstly taken and is filled with the sensor waterproof soft rubber 202, then three conductive silica gel 205 are filled in the sensor waterproof soft rubber 202, then the steel needle is sleeved outside the vertical implantation part 212 of the monitoring probe 201, and then the steel needle and the sensor waterproof soft rubber 202 are filled in the plastic base 203 together. After installation, it is necessary to check whether the parts are assembled in place.

Referring to fig. 4, 5, 6 and 7, a needle cartridge 300 includes a needle cartridge bottom housing 301, a needle cartridge top housing 302 and the sensor assembly 200 described above. A push piece 311 is vertically arranged on the inner wall of the needle box bottom shell 301; a hard needle accommodating groove is formed in the needle box bottom shell 301; the needle box upper shell 302 is arranged in the needle box bottom shell 301, and a sensor component mounting hole 321 which penetrates up and down is formed in the needle box upper shell 302;

the sensor assembly 200 is disposed within the sensor assembly mounting hole 321, and the lower portion of the hard needle 204 of the sensor assembly 200 is inserted into the hard needle receiving groove. The upper end opening of the needle box bottom case 301 is hot-pressed with a sealing aluminum foil 303. An indication groove 312 is provided at the upper end of the needle cartridge bottom case 301, and the indication groove 312 is provided adjacent to the push piece 311.

When the needle box is installed, the sensor assembly is firstly installed in the needle box bottom shell, then the needle box upper shell is installed in the needle box bottom shell, and whether the steel needle, the needle box upper shell and the like are assembled in place or not is checked. Taking the sealing aluminum foil 303, and hot-pressing the sealing aluminum foil to an opening at the upper end of the bottom shell of the needle box.

Referring to fig. 8 to 17, a special painless applicator is used to push the sensor assembly 200 in the needle cartridge 300 and implant the vertical implant 212 of the monitoring probe 201 of the sensor assembly 200 into the skin of a human body. The special painless applicator comprises a needle aid and a transmitter assembly 9 arranged in the needle aid, the needle aid comprising a housing 1, a spiral spring 2, a turntable 3, a button 4, an unlocking push rod 5, a sliding guide 6 and a transmitter fixing housing 7.

The shell 1 is formed by combining an A shell 11 and a B shell 12 into a hollow cavity structure with an opening at the lower end; the inner wall surface of the shell A11 is provided with a spring installation round groove 13, a guide rail chute and a push rod chute 15, the axial direction of the spring installation round groove 13 is mutually perpendicular to the axial direction of the shell 1, and a fixed shaft 16 is coaxially arranged in the spring installation round groove 13; the guide rail sliding groove consists of two vertical guide rail sliding grooves 14, and the two vertical guide rail sliding grooves 14 are respectively arranged at the two radial sides of the spring installation circular groove 13; the push rod runner 15 is vertically arranged, and the push rod runner 15 is located between the spring mounting circular groove 13 and one of the vertical guide rail runners 14.

The outer wall surface of the A shell 11 is provided with a button mounting groove, and one side wall of the A shell 11 is provided with a push rod sliding hole 17.

The scroll spring 2 is arranged in the spring installation circular groove 13 and sleeved on the fixed shaft 16; the rotary disk 3 is rotatably sleeved on the fixed shaft 16, and the annular peripheral wall of the rotary disk 3 is positioned between the scroll spring 2 and the groove wall of the spring mounting circular groove 13; the inner end of the scroll spring 2 is connected with a fixed shaft 16; the outer end of the scroll spring 2 is connected with the annular peripheral wall of the turntable 3; specifically, the fixed shaft 16 is cylindrical, a spring inner end bayonet 161 is formed on the wall surface of the fixed shaft 16 along the axial direction thereof, and a spring outer end bayonet 31 is formed on the annular peripheral wall of the turntable 3 along the axial direction thereof; the inner end of the scroll spring 2 is clamped in a spring inner end bayonet 161; the outer end of the spiral spring 2 is clamped in the outer end clamping opening 31 of the spring. The pre-pressing potential energy of the scroll spring 2 pushes the turntable 3 to rotate.

The disk bottom of the rotary disk 3 is provided with a shaft hole 32 and two rotating holes 33, the two rotating holes 33 are positioned on two radial sides of the shaft hole 32, and the shaft hole 32 of the disk bottom of the rotary disk is sleeved on the fixed shaft 16. During installation, two bosses of the rotary table rotary tool are clamped in the two rotary holes 33, so that the rotary table 3 can be rotated, and the spiral spring 2 can be rotated, so that the pre-pressing potential energy of the spiral spring 2 reaches proper strength, and needle feeding and needle withdrawing can be realized.

The outer wall surface of the annular peripheral wall of the turntable 3 is provided with a turntable boss, and the bottom of the turntable 3 is provided with a turntable limiting table 34.

The button 4 is movably arranged in a button mounting groove of the A shell 11, and the rear end of the button 4 penetrates through the groove bottom of the button mounting groove and extends into the A shell 11; the button boss 41 is provided on the inner side wall of the rear end of the button 4, and in the initial state, the turntable boss is abutted against the button boss 41.

Specifically, the button mounting groove is located on the front side of the spring mounting circular groove 13, and the groove bottom of the button mounting groove coincides with the groove bottom portion of the spring mounting circular groove 13. Two button perforations are formed in the bottom of the button mounting groove; the button 4 comprises a button body 43, a button short plug 44 and a button long plug 42, wherein the button short plug and the button long plug are respectively arranged at the rear end of the button body 43; the button short inserting posts 44 and the button long inserting posts 42 penetrate through the two button perforation holes in a one-to-one correspondence manner, and the button short inserting posts 43 penetrate through the corresponding button perforation holes and then are positioned in the fixed shaft 16; the button boss 41 is positioned on the inner side wall of the rear end of the button long plug 42; the tank bottom of the button mounting groove is provided with a button shrapnel 19 protruding forwards, the button body 43 is contacted with the button shrapnel 19, when the button 4 is pressed, the button long inserting column 42 drives the button boss 41 to move backwards, the turntable boss is separated from the button boss 41, and the turntable 3 can rotate under the action of the scroll spring 2.

The front end of the unlocking push rod 5 is inserted into the push rod chute 15 and slides along the push rod chute 15; one side of the unlocking push rod 5 is inserted into the push rod sliding hole 17 and slides along the push rod sliding hole 17, and in the initial state, the rear end of the push button 4 abuts against the other side of the unlocking push rod 5.

Specifically, the unlocking push rod 5 includes a push rod body 51, a push rod front insertion piece 52 provided at the front end of the push rod body 51, a push rod side insertion piece 53 provided at the lower portion of one side of the push rod body, and a button abutting table 54 provided at the upper portion of the other side of the push rod body; the push rod front insert 52 is inserted into the push rod chute 15 and slides along the push rod chute 15; the push rod side insert piece 53 is inserted into the push rod sliding hole 17 and slides along the push rod sliding hole 17, and in the initial state, the rear end of the long button insert post 42 of the button 4 is abutted against the front side of the button abutting table 54, and even if the user erroneously touches the button 4, the button cannot be pushed to move backward due to the abutting action of the button abutting table 54 for unlocking the push rod 5. When the needle box is used, the needle box bottom shell provided with the sensor is provided with the push plate, when the painless applicator is in butt joint with the sensor in the needle box bottom shell, the push plate pushes the push rod side inserting piece 53 to slide upwards along the push rod sliding hole 17, meanwhile, the push rod front inserting piece 52 moves upwards along the push rod sliding groove 15 to play a guiding role, the whole unlocking push rod 5 moves upwards, the rear end of the long push button inserting post 42 of the button 4 is separated from the button abutting table 54, the button 4 is unlocked, and the button 4 can be pressed backwards.

The front inserting piece 52 of the push rod is provided with an elastic piece 55, and the groove wall of the push rod chute 15 is provided with a corrugated strip 151 matched with the elastic piece 55.

The front side of the upper part of the sliding guide rail 6 is provided with a rotary table limiting groove 60 which is transversely arranged, two sides of the sliding guide rail are correspondingly inserted into the two vertical guide rail sliding grooves 14 one by one and slide along the corresponding vertical guide rail sliding grooves, and the rotary table limiting table 34 is inserted into the rotary table limiting groove 60; when the turntable 3 rotates, the turntable limiting table 34 in the turntable limiting groove 60 pushes the sliding guide rail 6 to move downwards and then upwards.

The transmitter fixing shell 7 is coaxially arranged in the shell 1; the top end of the transmitter fixing case 7 is connected to the bottom end of the slide rail 6.

Specifically, the sliding guide rail 6 includes a guide rail back plate 61, a guide rail bottom plate 62 and two guide bars 63, the guide rail back plate 61 and the guide rail bottom plate 62 are connected in an L shape, and the two guide bars 63 are connected to two sides of the guide rail back plate 61 in a one-to-one correspondence manner; the turntable limiting groove 60 is transversely formed in the upper part of the front side surface of the guide rail rear plate 61; the two guide bars 63 of the slide rail 6 are inserted in the two vertical rail grooves 14 in a one-to-one correspondence and slide along the corresponding vertical rail grooves.

The guide rail base plate 62 is provided with an emitter fixing shell slot 621, the top end of the emitter fixing shell 7 is provided with an emitter fixing shell inserting table 71, and the emitter fixing shell inserting table 71 is inserted into the emitter fixing shell slot 621.

The bottom end of the sliding guide rail 6, namely the guide rail bottom plate 62 is provided with a hard needle mounting hole 64, and the top end of the emitter fixing shell 7 is provided with a hard needle jack 72 which penetrates up and down; when the painless applicator is docked with the sensor assembly in the needle box bottom shell, the top end of the hard needle 204 on the sensor assembly passes through the hard needle insertion hole 72 and then is clamped in the hard needle mounting hole 64, and the sliding guide rail 6 drives the hard needle 204 to move up and down when moving up and down.

The emitter fixing shell 7 is of a groove-shaped structure with an opening at the lower end; a transmitter assembly 9 is disposed within the transmitter housing 7. The lower part of the housing 1 is covered with a bottom cover 10. The bottom of the inner wall surface of the shell 1 is provided with a transmitter fixing shell limiting table 18, and when the needle aid is used and pulled out, the transmitter fixing shell 7 is clamped by the transmitter fixing shell limiting table 18, left in the shell 1 and taken down together.

Referring to fig. 18, 19 and 20, the transmitter assembly 9 includes a transmitter housing 91 and a transmitter circuit board assembly 92 disposed within the transmitter housing 91, wherein: the emitter housing 91 is formed by connecting an upper housing and a lower housing; the emitter housing 91 is provided with an emitter application glue 93 on a bottom end face thereof; the lower shell of the emitter shell 91 is provided with a sensor assembly mounting position; the emitter circuit board assembly 92 includes an emitter circuit board 921, a mylar sheet 922, a button cell 923, a positive nickel sheet 924, and a negative nickel sheet 925, the mylar sheet 922 being disposed at a bottom end of the emitter circuit board 921; button cell 923 is located at the bottom end of mylar sheet 921; the negative nickel piece 925 is soldered at the negative pad of the emitter circuit board 921; the positive nickel piece 924 is welded to the positive electrode pad of the emitter circuit board 921, and the positive nickel piece 924 needs to be welded with the button cell 923 by a laser spot welder; the positive nickel piece 924 and the negative nickel piece 925 are respectively connected with a button cell 923, and the button cell 923 supplies power to the emitter circuit board 921. The upper case of the transmitter case 91 and the transmitter circuit board 921 are respectively provided with a hard needle fixing stand perforation 95; the emitter application glue 93 is provided with sensor assembly perforations 96. The emitter circuit board 921 has three electrode contact points 97 thereon.

In assembling the transmitter module 9, the transmitter circuit board module is assembled first, and then the transmitter circuit board module is mounted in the transmitter housing 91, and the upper and lower housings of the transmitter housing 91 are welded together by an ultrasonic welder. The completion of the welding requires checking the tightness of the ultrasonic welding, and then applying the adhesive 93 to the emitter.

The side wall of the shell 1 is provided with a downward indication arrow, and the indication arrow is arranged adjacent to the push rod sliding hole 17; the indication groove 312 on the bottom case of the needle box is positioned on the same side as the indication arrow on the side wall of the shell 1, and when the needle box is inserted, the direction can be judged according to the indication groove 312 and the indication arrow.

The painless applicator of the present utility model is assembled by first loading the button 4 into the a-housing 11. The spiral spring 2 is then installed in the a housing 11. The turntable 3 is then fitted into the a-housing 11. The rotary disk 3 drives the scroll spring 2 to rotate clockwise for 2 circles and then is clamped by inserting a rotary disk rotary tool into a rotary hole of the rotary disk and lifting the rotary disk appropriately. The unlocking push rod 5 is taken to be installed in the A shell 11 and pushed down to the bottom. The emitter fixing case 7 is then fitted into the bottom end of the slide rail 6. The transmitter assembly 9 is housed in the transmitter fixing case 7; check if all snaps are in place. The joined slide rail 6/emitter fixing housing 7 and emitter assembly 9 are then loaded into the applicator a housing 11 and checked for the components being in place. The B housing 12 is then snapped onto the a housing 11 and checked for all snaps in place. Finally, the bottom cover 10 is put on the lower part of the housing 1, and it is checked whether all the snaps are in place. The whole assembly process is simple, and all parts can be assembled without a hot melting process.

Referring to fig. 21, 22 and 23, in use, the painless applicator of the present utility model is assembled by removing the bottom cover 10, tearing the sealed aluminum foil 303 on the needle case bottom cover 301, mounting the needle case bottom cover 301 containing the sensor assembly 200 on the lower portion of the housing 1, pressing the housing 1 downward, and docking the painless applicator 100 with the sensor assembly 200 in the needle case bottom cover 301, wherein the sensor assembly 200 is inserted into the sensor assembly mounting position on the lower portion of the housing 91 after passing through the sensor assembly perforation 96 on the transmitter application glue 93; the hard needle fixing table 242 is sequentially inserted through the hard needle fixing table perforation 95 on the emitter circuit board 921, the hard needle fixing table perforation on the upper shell of the emitter shell 91, and the hard needle insertion hole 72 at the top end of the emitter fixing shell 7, and then is clamped in the hard needle mounting hole 64 at the bottom end of the sliding guide rail, meanwhile, the push piece 311 on the needle box bottom shell 301 pushes the push rod side insertion piece 53 to slide upwards along the push rod sliding hole 17, the whole unlocking push rod 5 moves upwards, the rear end of the push button long insertion post 42 of the push button 4 is separated from the push button abutting table 54, the push button 4 is unlocked, then the painless applicator abutting on the sensor assembly is pressed to a proper position of human skin, then the push button 4 is pressed inwards, the rotary table boss on the annular peripheral wall of the rotary table 3 is separated from the push button boss 41 at the rear end of the push button long insertion post 42, the limit of the rotary table 3 is released by the push button 4, the turntable 3 is driven to rotate by the pre-pressing potential energy of the spiral spring 2, the turntable limiting table 34 moves downwards along with the rotation of the turntable 4, the turntable limiting table 34 in the turntable limiting groove 60 pushes the sliding guide rail 6 to move downwards when moving downwards, the emitter fixing shell 7 and the hard needle 204 are driven to move downwards, the emitter assembly is driven to move downwards, the hard needle 204 drives the vertical implantation part 212 of the monitoring probe 201 to be pricked into skin together, when the spiral spring 2 drives the turntable 3 to push the sliding guide rail 6 to the bottommost end, at the moment, the hard needle 204 is completely pricked into muscle, the needle pricking process is completed, the vertical implantation part 212 of the monitoring probe 201 is implanted into skin, the turntable 3 continues to rotate, the turntable limiting table 34 drives the sliding guide rail 6 to move upwards, and the sliding guide rail 6 drives the hard needle 204 to be pulled upwards, so that the hard needle 204 is recovered; the needle aid of the painless applicator is then removed and the emitter and sensor are adhered to the skin by means of the emitter application glue 93 at the bottom end of the emitter assembly. The top ends of the three conductive silica gel 205 are in contact with three electrode contact points 97 on the transmitter circuit board 921 of the transmitter assembly 9, the button cell 26 supplies power for the transmitter circuit board 921, the monitoring probe 201 monitors blood sugar in a human body, and the monitored signals are sent to external electronic equipment through the transmitter assembly to realize blood sugar monitoring.

The painless applicator has simpler structure, adopts the sliding guide rail to replace a connecting rod to connect the rotary table and the emitter fixing shell, and the rotary table limiting table 34 on the rotary table is inserted into the long rotary table limiting groove 60 on the sliding guide rail, and the rotary table limiting table 34 is always positioned in the rotary table limiting groove 60 in the rotary table rotating process, so that the whole needle assisting process is more stable and reliable; the push rod locking button is unlocked, so that the user is prevented from touching the button by mistake, and the push rod locking button is safer and more practical.

Referring to fig. 24, the turntable limiting groove 60 may be elongated or may be configured to have an upwardly protruding arc shape. Fig. 12 a shows the movement trace of the turntable limiting table 34 on the turntable in the long turntable limiting groove 60 during the downward movement of the sliding guide rail 6, and B shows the movement trace of the turntable limiting table 34 on the turntable in the arc-shaped turntable limiting groove 60 during the downward movement of the sliding guide rail 6, and the arc-shaped turntable limiting groove 60 can realize a longer pushing stroke h2> h1 of the sliding guide rail under the condition that the rotation angles of the turntable are the same =.1 =.2.

Referring to fig. 25, a diagram shows a movement track of the turntable limiting table 34 on the turntable in the long turntable limiting groove 60 during the downward movement of the sliding guide rail 6, and B diagram shows a movement track of the turntable limiting table 34 on the turntable in the arc-shaped turntable limiting groove 60 during the downward movement of the sliding guide rail 6, when the sliding guide rail travel is the same h1=h3, the arc-shaped turntable limiting groove 60 can make the rotation angle of the turntable smaller, i.e. angle 3< <1, i.e. can complete the needle assisting process in a shorter time.

Referring to fig. 26, hard needle retention time test: industrial high-speed cameras with article model OSG030-790UMTZ were used to detect hard needle retention times for commercially available products and the painless applicator of the present utility model, the specific experimental method: the applicator 100 is in butt joint with a needle box, a sensor and a hard needle are arranged, the sensor and the hard needle are then arranged at the front end of the industrial high-speed camera 501, the camera of the industrial high-speed camera 501 and the movement area of the hard needle are in the same direction, so that the industrial high-speed camera 501 can shoot the movement process of the hard needle, and a light supplementing lamp 502 is arranged to irradiate the needle assisting device so as to provide sufficient illumination; during the shooting process, the buttons of the commercially available product and the painless applicator of the present utility model are pressed down, respectively, and the industrial high-speed camera records the movement process of the two. After shooting, analyzing the video image by software, starting from the outward movement of the needle point of the hard needle to the outlet of the needle aid, and then returning the needle point of the hard needle to the outlet of the needle aid, calculating the video image frame number between the two to obtain the video image frame number of the hard needle moving outside the needle aid, and obtaining the moving time of the hard needle outside the needle aid by using the average frame rate of the high-speed camera when the video image frame number of the hard needle moving outside the needle aid is/is tested, namely the stay time of the hard needle, for example: when commercial products are tested, the average frame rate of a high-speed camera is 2277fps (2277 frames per second), the average movement of the hard needle outside the needle aid is 110 frames, 110 frames/2277 fps=48.3 ms, and the average movement of the hard needle outside the needle aid is 48.3ms; when the painless applicator of the present utility model was tested, the high speed camera average frame rate 2696fps (2696 frames per second), the steel needle moved on average 12 frames outside the needle aid, 12 frames/2696 fps=4.45 ms, and the calculation showed that the steel needle moved on average 4.45ms outside the needle aid. Through multiple tests, the painless applicator of the utility model has the average hard needle retention time of 4.45 milliseconds, and the hard needle retention time of a commercial needle aid of 48.3 milliseconds, compared with the commercial product, the painless applicator of the utility model has the advantages of shorter hard needle retention time, shorter retention time, better use experience for users, weaker pain feeling when the hard needle is injected into a sensor, quicker whole needle aid process, furthest weakening pain feeling and realizing painless needle aid. And after the sensor fails, the transmitter and the sensor connected with the transmitter are removed.

In summary, the sensor component of the utility model has the advantages that the monitoring probe is directly designed into an L shape, the monitoring probe is not easy to break after being implanted into a human body, the monitoring probe is in side contact with the conductive silica gel, the connection is firm, the shaking is not easy, and the data stability is good. The needle box can reliably store the sensor assembly and is convenient to use. In the special painless applicator, the parts are few, the structure is simple, the assembly is simple, false triggering can be prevented, and the whole needle assisting process is more stable and reliable; the needle is assisted by one spiral spring, the whole needle assisting process is quicker, pain is reduced to the greatest extent, and painless needle assisting is realized.

It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the utility model, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the utility model as long as they fall within the true spirit of the utility model.

Claims

1. The utility model provides a sensor subassembly, its characterized in that includes monitoring probe, the waterproof soft rubber of sensor, plastic base and hard needle, wherein:

2. A sensor assembly according to claim 1, wherein the junction of the tip of the hard needle and the two side walls of the notch is arcuate.

3. A needle cartridge comprising a needle cartridge bottom housing, a needle cartridge top housing, and the sensor assembly of claim 1 or 2, wherein:

4. A needle magazine according to claim 3, wherein the upper end opening of the needle magazine bottom case is hot pressed with a sealing aluminum foil.

5. A special painless applicator for pushing a sensor assembly in a needle cartridge of claim 3 and implanting a vertical implant of a monitoring probe of the sensor assembly into human skin, the special painless applicator comprising a needle aid and a transmitter assembly disposed within the needle aid, wherein the needle aid comprises a housing, a spiral spring, a dial, a button, an unlocking push rod, a sliding rail, and a transmitter housing, wherein:

the transmitter fixing shell is coaxially arranged in the shell;

the transmitter assembly is disposed within the transmitter mounting housing;

6. The special painless applicator of claim 5, wherein the emitter assembly comprises an emitter housing and an emitter circuit board assembly disposed within the emitter housing, wherein:

7. The special painless applicator of claim 6 wherein upon interfacing the special painless applicator with a sensor assembly within the needle case, the sensor assembly is inserted through a sensor assembly aperture in the emitter application gel into a sensor assembly mounting location on a lower housing portion of the emitter housing;

8. The special painless applicator of claim 6, wherein when the special painless applicator is docked with the sensor assembly in the needle case, the push piece on the inner wall of the bottom case of the needle case pushes one side of the unlocking push rod inserted into the push rod sliding hole to slide upwards, and the whole unlocking push rod is driven to slide upwards.

9. The special painless applicator of claim 5, wherein the lower portion of the housing is covered with a bottom cover.

10. The special painless applicator of claim 5, wherein a bottom end of the inner wall surface of the housing is provided with a transmitter fixing case stopper which catches the transmitter fixing case when the needle aid is pulled out when the needle aid is used.

11. The special painless applicator of claim 5, wherein a downward pointing arrow is provided on a sidewall of the housing, and wherein the pointing arrow is provided adjacent to the push rod sliding aperture; the upper end of the needle box bottom shell is provided with an indication groove, and the indication groove is arranged adjacent to the push piece.

12. The special painless applicator of claim 5, wherein the turntable-defining slot has a strip shape or an upwardly convex arcuate shape.