CN211935058U

CN211935058U - Medicament injector

Info

Publication number: CN211935058U
Application number: CN202020099724.7U
Authority: CN
Inventors: 桑会庆; 吴亚金; 张钧
Original assignee: Shanghai Umitai Medical Technology Co ltd
Current assignee: Shanghai Umitai Medical Technology Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-11-17
Anticipated expiration: 2030-01-16

Abstract

The utility model provides a medicament injector, which comprises a shell part, a propelling part, an injection part and a control part; the shell part comprises a shell body and an end cover, wherein an opening is formed in one end of the shell body, and the end cover is detachably arranged on the shell body; the propelling part comprises a propelling driver, a movable block and a movable support, the propelling driver is arranged in the shell body, the movable block is arranged at the driving tail end of the propelling driver, and the movable support is fixed with the movable block; the injection part comprises an injection driver, an injection piston rod, a medicament barrel and an injection needle, the medicament barrel is fixed on the movable support and extends out of the opening, the end cover is provided with a small hole, the injection needle can penetrate out of the small hole, the injection driver is positioned at the other end part of the shell body far away from the opening, one end of the injection piston rod is connected with the driving tail end of the injection driver, and the other end of the injection piston rod extends into the medicament barrel; the utility model discloses can realize that medicament injection, syringe needle are pricked and are pulled out full automation mechanized operation.

Description

Medicament injector

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to intelligent medicament (liquid medicine) syringe convenient to injection medicament.

Background

The conventional injection pen has the following problems in injecting medicine to a patient: firstly, patients adopt manual injection, the injection dosage of liquid medicine is not easy to be accurately controlled, and the phenomenon of more time and less time during liquid medicine injection occurs, so that the medical effect is influenced; secondly, because work and affairs are busy, patients often forget to inject within a specified time, and disease control is affected; thirdly, when the patient performs manual injection, the patient performs manual needle insertion, the needle insertion depth and the needle insertion speed are not easy to be accurately controlled, so that the pain and the experience of the patient in the injection process are uncomfortable; fourthly, when the patient injects and punctures the needle manually, the hand shaking can increase the wound surface; fifthly, during traditional mechanical injection, the patient increases the phobia and psychological pressure of the patient through the manual needle insertion and needle pulling of the patient; sixthly, the traditional injection can not store the historical injection record, and can not be used for doctors to judge the disease condition, thereby influencing the formulation of diagnosis and treatment schemes; seventhly, the intelligent degree of traditional injection is low, brings inconvenience for the actual injection, and eight, traditional injection pen overall dimension are big on the large side, and especially width, thickness are big on the large side, only are fit for adult one-hand to use, and the minor is because the hand is less, and is not very suitable the minor to use, the utility model discloses overall dimension is less relatively, is convenient for the minor to operate.

SUMMERY OF THE UTILITY MODEL

To the defect of prior art, the utility model provides a medicament syringe can realize that medicament (liquid medicine) injection, syringe needle are pricked to pull out the complete automation mechanized operation of needle, avoids the manual operation to bring harmful effects, and adult, minors all can use.

In order to achieve the above object, the present invention provides a medicament injector, comprising:

a housing portion;

a propelling part;

an injection part; and

a control section;

the shell part comprises a shell body and an end cover, wherein an opening is formed in one end of the shell body, and the end cover is detachably arranged on the shell body and can cover the opening;

the propelling part comprises a propelling driver, a movable block and a movable support, the propelling driver is arranged in the shell body and is positioned at the other end part of the shell body, which is far away from the opening, the movable block is arranged at the driving tail end of the propelling driver and can extend or retract towards the opening, and the movable support is positioned in the shell body and is fixed with the movable block;

the injection part comprises an injection driver, an injection piston rod, a medicament barrel and an injection needle, the medicament barrel is fixed on the movable support and extends out of the opening, the end cover is provided with a small hole, the injection needle is arranged at one end part of the medicament barrel and can penetrate out of the small hole, the injection driver is fixed on the movable support and is positioned at the other end part of the shell body, which is far away from the opening, one end of the injection piston rod is connected with the driving tail end of the injection driver, and the other end of the injection piston rod extends into the medicament barrel;

wherein, the control part is connected with the propelling driver and the injection driver in a control way.

The above technical scheme of the utility model, set up and impel the driver to carry out the release of syringe needle, set up the injection driver and carry out the injection of medicament, whole process automation goes on, easy operation has avoided the mechanical type to be the drawback of the difficult accurate control of the depth of pricking, injection dosage, injection speed.

According to the utility model discloses a another kind of concrete implementation way further includes the guide part, and the guide part includes short guide arm, long guide arm, and the movable support is provided with respectively with short guide arm, long guide arm sliding fit's lug, wherein, is parallel to each other between short guide arm, the long guide arm.

According to the utility model discloses a another kind of embodiment, the guide part further includes the short support of ears, the long support of ears, and short guide arm passes through the short support of ears to be fixed at the casing originally internally, and long guide arm passes through the long support of ears to be fixed at the casing originally internally.

According to the utility model discloses a another kind of embodiment, the guide part is still established the pretension spring on short guide arm, long guide arm including the cover, and the pretension spring can keep the free bearing to be in balanced gesture under being in the stress state to make the free bearing more stable.

According to the utility model discloses a another kind of embodiment, propulsion drive includes propulsion motor, first lead screw, articulated seat, and propulsion motor fixes on casing body, and articulated seat is fixed on casing body, and on the one end of first lead screw was connected to propulsion motor's output shaft, the other end rotation of first lead screw supported on articulated seat, wherein, the cooperation is connected between movable block and the first lead screw.

According to the utility model discloses a another kind of embodiment, impel the driver and further include the nut adaptor, the cooperation is connected between nut adaptor and the first lead screw, can dismantle the cooperation between movable block and the nut adaptor and be connected.

According to the utility model discloses a another kind of embodiment, the injection driver includes injection motor, second lead screw, nut spare, and injection motor fixed mounting is on the movable support, and the second lead screw setting is at the output of injection motor, nut spare set up on the second lead screw and with the second lead screw between the cooperation be connected, the one end of injection piston rod is connected on nut spare.

According to the utility model discloses a another kind of embodiment, the injection piston rod is equipped with one end open-ended slotted hole, and the slotted hole is equipped with the internal thread, be equipped with on the nut spare with this internal thread complex external screw thread, the injection piston rod is connected on the nut spare through this thread groove detachably, and the free end of second lead screw can pass the nut spare and stretch into in the thread groove.

According to the utility model discloses a another kind of embodiment, control portion includes the circuit board, for the battery of circuit board power supply, a plurality of function button, display screen, and the circuit board passes through the installing support to be fixed and keeps away from another tip of open-ended on casing body, and a plurality of function button are connected with the circuit board, are equipped with the through-hole on the casing body, and a plurality of function button wear out the through-hole and stretch out outside the casing body.

The display screen can display injection information, is positioned outside the shell and can display at least administration metering information, indication needle inserting depth, injection time, needle advancing and retreating speed, a use log and the like.

According to the utility model discloses a another kind of embodiment, casing part is further including being used for controlling the rotatory cap of injection dosage, and the circuit board is provided with rotary switch, is connected between rotatory cap and the rotary switch.

According to the utility model discloses a another kind of embodiment, the casing body is provided with the draw-in groove including two semi-casings of amalgamation of each other on the semi-casing, and rotatory cap is equipped with the connecting plate, and the connecting plate embedding is in the draw-in groove.

The utility model discloses possess following beneficial effect:

the utility model discloses a medicament syringe aims at the end cover service surface and hugs closely the position that will inject before the injection, shifts out forward or returns backward through propulsion part drive injection part, realizes that the syringe needle stretches out the aperture on the end cover and injects to pull out the needle process after the injection, have degree of automation height, easy operation's advantage, avoided the mechanical type to be the drawback of the difficult accurate control of the depth of pricking needle, injection dosage, injection speed.

Furthermore, the utility model discloses propulsion part, injection part adopt the structure of segmentation control, can carry out the control of the degree of depth of pricking, injection measurement under the single factor, and the precision of control is higher, and convenient to use person operates.

Furthermore, the utility model discloses structural connection stability between propulsion part, the injection part is good, avoids pricking and injection process syringe needle to produce unnecessary and rocks, reduces user's misery.

Furthermore, the utility model discloses a direction part can be fine carries out the transmission, and it has stronger wearability to prevent to protect the movable support, avoid appearing rocking after using for a long time, the pretension spring of further setting can keep the movable support to be in the balanced gesture of atress all the time, so that the motion process of movable support is more stable.

Furthermore, the utility model discloses set up a plurality of external function button, the person of facilitating the use's operation to dose, information such as time of dosing is direct to be shown on the display screen, has avoided the user to descend because of memory, the unexpected injection incident's that the eyesight is not good to lead to emergence, makes the operation syringe that the patient can be better, and storage injection information is convenient for patient's inquiry, use, in order greatly to guarantee the security of injection, convenient to use person uses more.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of the medicament injector of the present invention in a front view;

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

FIG. 3 is a schematic half-section view from the perspective of FIG. 1;

FIG. 4 is a schematic view of the internal structure of the syringe for injecting medication according to the present invention;

fig. 5 is an exploded view of the internal structure of the medicament injector of the present invention;

FIG. 6 is a schematic view of the structure of the propelling part of the syringe for injecting medication according to the present invention;

FIG. 7 is a schematic view of the injection part of the syringe for injecting medication according to the present invention;

FIG. 8 is a schematic view of the structure of the medicament cartridge of the medicament injector of the present invention;

fig. 9 is a schematic structural view of the display screen and the keys of the medicament injector of the present invention;

fig. 10 is a schematic structural view of a control portion of the medical injector of the present invention.

Detailed Description

A medicament injector, as shown in fig. 1-10, comprising a housing portion 100, a propulsion portion 200, a guiding portion 300, an injection portion 400, a control portion 500;

referring to fig. 1 and 2, the casing portion 100 is generally in the shape of a cylindrical pen, and includes a casing body 110 and an end cap 120, wherein the longitudinal section of the casing body 110 is preferably oval or flat, an opening 111 is provided at a lower end of the casing body 110, and the end cap 120 is detachably disposed on the casing body 110 and can cover the opening 111.

Specifically, the housing body 110 includes a housing half 112 and a housing half 113 which are assembled to each other, and after the propelling part 200, the guiding part 300, the injecting part 400 and the controlling part 500 are installed in one of the housing halves 112, the other housing half 113 is snapped to achieve connection.

Referring to fig. 5, a clamping ring 130 is provided at the lower opening 111 of the housing body 110 for clamping the two half-housings, and the end cap 120 is directly inserted into a pre-formed groove on the clamping ring 130 to connect the end cap 120 and the housing body 110.

The pushing part 200 is used for performing forward pushing out and backward retracting of the injection part 400, and referring to fig. 3 and 4, comprises a pushing driver 210, a movable block 220 and a movable support 230, wherein the pushing driver 210 is arranged in the housing body 110 and is positioned at the other end of the housing body 110 far away from the opening 111, the movable block 220 is arranged at the driving end of the pushing driver 210 and can extend or retract towards the opening 111, and the movable support 230 is positioned in the housing body 110 and is fixed with the movable block 220.

Referring to fig. 6, the propulsion driver 210 adopts a nut-screw manner, and includes a propulsion motor 211, a first screw 212, a hinge base 213, and a nut adapter 214, the propulsion motor 211 is fixed on the housing body 110, specifically, on the half housing 112, the hinge base 213 is fixed on the housing body 110, one end of the first screw 212 is connected to an output shaft of the propulsion motor 211, the other end of the first screw 212 is rotatably supported on the hinge base 213, the movable block 220 is rotatably disposed on the first screw 212, the nut adapter 214 is rotatably fixed on the movable block 220 in a threaded manner, and the rotation of the first screw 212 is converted into a linear motion of the nut adapter 214.

Wherein the nut connector 214 is fixed on the movable support 230 by the adapter shaft 215 and the L-shaped bracket 216.

The guide portion 300 is used for guiding the movable support 230 to make it smoothly move so as to push out or retract the injection portion 400 forward or backward as a whole, referring to fig. 4 and 5, the guide portion 300 includes a short guide rod 310, a long guide rod 320, a binaural short bracket 330, a binaural long bracket 340 and a pretension spring 350, the short guide rod 310 is fixed in the housing body 110 through the binaural short bracket 330, and the long guide rod 320 is fixed in the housing body 110 through the binaural long bracket 340.

The short guide rod 310 and the long guide rod 320 are parallel to each other, the movable support 230 is provided with a lifting lug 231 in sliding fit with the short guide rod 310 and the long guide rod 320 respectively, different lifting lugs 231 on the movable support 230 are sleeved on the short guide rod 310 and the long guide rod 320 respectively, and can slide along the guide direction of the short guide rod 310 and the long guide rod 320 under the action of the propelling driver 210.

Referring again to fig. 4, since the long guide bar 320 has a large length, two lifting lugs 231 are provided on the long guide bar 320 to support the stable movable mount 230.

Furthermore, the long guide rod 320 and the short guide rod 310 are also sleeved with a pre-tightening spring 350, and the pre-tightening spring 350 can keep the movable support 230 in a posture with balanced stress all the time, so that the movement process of the movable support 230 is more stable.

The injection part 400 is used for storing and injecting medicament (liquid medicine), referring to fig. 3 and 4, the injection part 400 comprises an injection driver 410, an injection piston rod 420, a medicament cartridge 430 and an injection needle 440, the medicament cartridge 430 is fixed on the movable support 230 and extends out of the opening 111, the end cap 120 is provided with a small hole 121, the injection needle 440 is arranged at one end of the medicament cartridge 430 and can penetrate out of the small hole 121, the injection driver 410 is fixed on the movable support 230 and is positioned at the other end of the housing body 110 far away from the opening 111, one end of the injection piston rod 420 is connected to the driving end of the injection driver 410, and the other end of the injection piston rod 420 extends into the medicament cartridge 430.

Referring to fig. 7, the injection driver 410 is also in the form of a nut screw, and includes an injection motor 411, a second screw 412, and a nut member 413, wherein the injection motor 411 is fixedly mounted on the movable support 230, the second screw 412 is disposed at an output end of the injection motor 411, the nut member 413 is disposed on the second screw 412 and is in fit connection with the second screw 412, and one end of the injection piston rod 420 is connected to the nut member 413.

The injection motor 411 and the propulsion motor 211 are abutted, and the first lead screw 212 and the second lead screw 412 are parallel to form a compact and staggered space structure, so that the space in the shell body 110 can be effectively utilized, and the miniaturization and the product design are facilitated.

Further, in order to simplify the structure and enable the injection piston rod 420 to have a movement stroke not smaller than that of the medicine cartridge 430, the injection piston rod 420 is provided with a slot (not shown) having an opening 111 at one end, the slot is provided with an internal thread, the nut piece 413 is provided with an external thread matching with the internal thread, the injection piston rod 420 is detachably connected to the nut piece 413 through the thread slot, and the free end of the second lead screw 412 can pass through the nut piece 413 and extend into the slot hole, and at this time, the slot hole can provide a sufficient installation space for the second lead screw 412, so as to save the whole structural space.

Referring to fig. 8, the utility model provides a cartridge 430 is fixed on movable support 230 through mount pad 450, and wherein threaded connection or buckle connection between cartridge 430 and the mount pad 450, when changing the medicament, pull out the back with end cover 120, take off cartridge 430, after packing into new medicament, install cartridge 430 to the mount pad again, can carry out reuse after with end cover 120 lock, and whole medicament change process is very convenient.

Wherein, the injection needle 440 of the present invention is also installed on the medicament cartridge 430 in a threaded manner.

The control part 500 is used for automatic injection control of medicament, see fig. 3, 4, 9, 10, and comprises a circuit board 510, a mounting bracket 520, a battery 530, a plurality of function keys 540, and a display screen 550;

the circuit board 510 may be an MCU microprocessor, and is fixed on the casing body 110 through a mounting bracket 520, specifically, the other end of the casing body 110 away from the opening 111, the battery 530 is also fixed through the mounting bracket 520 and is used for supplying power to the circuit board 510, and the display screen 550 is fixed outside the casing body 110 and is covered with a transparent window 560, which is connected with the circuit board 510 through a prefabricated circuit.

The display screen 550 can display injection information, which is located outside the housing and can display at least local administration dosage information, information indicating the depth of the needle insertion, the time of injection, the speed of needle insertion and retraction, a log of use, and the like.

The plurality of function keys 540 at least comprise a setting key 541 and an injection key 542, referring to fig. 9, the setting key 541 is used for selecting a setting program in the circuit board 510, and the setting program comprises performing first-level menu air exhaust, injection and medicine change, second-level menu needle inserting depth, injection time, needle advancing and retracting speed, consulting third-level menu injection log time and the like, specifically, the information can be displayed on the display screen 550, when a corresponding menu is selected through the setting key 541, a program implanted in the circuit board 510 is activated, corresponding instructions are sent, and the instructions are respectively transmitted to the propulsion motor 211 and the injection motor 411, and the coordinated motion control of the propulsion motor 211 and the injection motor 411 is respectively performed.

Among them, the propulsion motor 211 and the injection motor 411 are preferably servo motors having encoders.

Referring to fig. 3, 4 and 10, the housing part 100 of the present invention is further provided with a rotary cap 140 for controlling the dose of the injection, and the circuit board 510 is provided with a rotary switch (sensor), and the rotary cap 140 is connected to the rotary switch to adjust the dose of the injection more conveniently.

Specifically, referring to fig. 5, the

half shells

112 and 113 are provided with the locking slots 114, the rotating cap 140 is provided with the connecting plate 141, the connecting plate 141 is embedded in the locking slots 114, and the matching between the connecting plate 141 and the locking slots 114 not only plays a role of axial restraint and limitation, but also plays a role of free rotation of the rotating cap 140 along the circumference to set the dose to be administered.

Specifically, the center of the rotating cap 140 of the present invention is further provided with a mounting hole 142, and an injection key 542 is disposed in the mounting hole 142, so that the user can operate with one hand.

The utility model discloses an optimal operation process does:

setting the dose to be administered by rotating the cap 140, entering the ready-to-inject phase;

after confirming the information with the injection liquid medicine through the display screen 550, aligning the use surface of the end cover 120 to the part to be injected and tightly attaching the use surface to the part to be injected, and pressing the injection key 542;

then, the pushing motor 211 rotates forward to drive the movable support 230 to push forward to a set position, the pushing motor 211 stops rotating, and the injection needle 440 completes the needle inserting process;

then the injection motor 411 rotates forwards to drive the injection piston to advance forwards to inject the set dosage of the medicine, namely completing single injection;

at this time, the injection needle 440 and the movable support 230 can be returned by reversely rotating the propulsion motor 211;

the replacement of the medicine and the return of the injection motor 411 are selected according to the circumstances.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. Any person skilled in the art can make some modifications without departing from the scope of the invention, i.e. all equivalent modifications made according to the invention shall be covered by the scope of the invention.

Claims

1. A medicament injector, comprising:

a housing portion;

a propelling part;

an injection part; and

a control section;

the injection part comprises an injection driver, an injection piston rod, a medicament barrel and an injection needle, the medicament barrel is fixed on the movable support and extends out of the opening, the end cover is provided with a small hole, the injection needle is arranged at one end of the medicament barrel and can penetrate out of the small hole, the injection driver is fixed on the movable support and is positioned at the other end of the shell body, which is far away from the opening, one end of the injection piston rod is connected with the driving tail end of the injection driver, and the other end of the injection piston rod extends into the medicament barrel;

wherein the control part is in control connection with the propelling driver and the injection driver.

2. The medicament injector of claim 1, further comprising a guide portion, wherein the guide portion comprises a short guide rod and a long guide rod, the movable support is respectively provided with a lifting lug which is in sliding fit with the short guide rod and the long guide rod, and the short guide rod and the long guide rod are parallel to each other.

3. The medicament injector of claim 2, wherein said guide portion further comprises a short binaural frame, a long binaural frame, said short guide rod being secured within said housing body by said short binaural frame, and said long guide rod being secured within said housing body by said long binaural frame.

4. The medical injector of claim 2, wherein said guide portion further comprises a pre-tensioned spring disposed about said short guide rod and said long guide rod.

5. The medical injector according to claim 1, wherein the propulsion driver comprises a propulsion motor, a first lead screw, and a hinge base, the propulsion motor is fixed on the housing body, the hinge base is fixed on the housing body, one end of the first lead screw is connected to an output shaft of the propulsion motor, the other end of the first lead screw is rotatably supported on the hinge base, and the movable block is connected with the first lead screw in a matching manner.

6. The medical injector of claim 5, wherein said propulsion driver further comprises a nut adaptor, said nut adaptor being in mating connection with said first lead screw, said movable block being in detachable mating connection with said nut adaptor.

7. The drug injector of claim 1, wherein the injection driver comprises an injection motor fixedly mounted on the movable support, a second lead screw provided at an output end of the injection motor, and a nut member provided on the second lead screw and in mating connection with the second lead screw, one end of the injection piston rod being connected to the nut member.

8. The medicament injector of claim 1, wherein the control portion comprises a circuit board, a battery for supplying power to the circuit board, a plurality of function buttons, and a display screen, the circuit board is fixed on the other end of the housing body away from the opening through a mounting bracket, the plurality of function buttons are connected with the circuit board, the housing body is provided with a through hole, and the plurality of function buttons penetrate through the through hole and extend out of the housing body.

9. The medicament injector of claim 8, wherein the housing portion further comprises a rotary cap for controlling the injection of the administered dose, the circuit board being provided with a rotary switch, the rotary cap and the rotary switch being connected therebetween.

10. Medicament injector according to claim 9, characterized in that the housing body comprises two half-shells which are split into each other and are provided with a catch, and in that the swivel cap is provided with a connection plate which engages in the catch.