WO2019029123A1 - 微调注射笔 - Google Patents

微调注射笔 Download PDF

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Publication number
WO2019029123A1
WO2019029123A1 PCT/CN2018/071357 CN2018071357W WO2019029123A1 WO 2019029123 A1 WO2019029123 A1 WO 2019029123A1 CN 2018071357 W CN2018071357 W CN 2018071357W WO 2019029123 A1 WO2019029123 A1 WO 2019029123A1
Authority
WO
WIPO (PCT)
Prior art keywords
ratchet
adjustment
injection
button
adjusting
Prior art date
Application number
PCT/CN2018/071357
Other languages
English (en)
French (fr)
Inventor
韩毅涛
潘俊锋
李国安
Original Assignee
甘肃成纪生物药业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710671909.3A external-priority patent/CN107308523A/zh
Priority claimed from CN201720979435.4U external-priority patent/CN208448332U/zh
Application filed by 甘肃成纪生物药业有限公司 filed Critical 甘肃成纪生物药业有限公司
Priority to RU2019132214A priority Critical patent/RU2721930C1/ru
Priority to EP18844414.5A priority patent/EP3603702A4/en
Publication of WO2019029123A1 publication Critical patent/WO2019029123A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
    • A61M5/31551—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe including axial movement of dose setting member
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/31556—Accuracy improving means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31583—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod
    • A61M5/31585—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod performed by axially moving actuator, e.g. an injection button
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/581—Means for facilitating use, e.g. by people with impaired vision by audible feedback
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback

Definitions

  • the invention relates to the technical field of medical instruments, in particular to a fine adjustment injection pen.
  • an injection pen that can be self-injected has emerged.
  • the medicine bottle can be filled into the injection pen, and the matching needle can be connected to achieve self-injection, and the entire injection process does not occur.
  • the glass crumb, the liquid does not transfer, and is not exposed to the air, so the safety of the medicine can be ensured and the convenience of the medicine can be improved.
  • first-aid and chronic diseases and diabetes can be applied to all kinds of first-aid and chronic diseases and diabetes, to help patients with cardiovascular and cerebrovascular diseases and hypoglycemia achieve self-injection, and secondly to apply for acute poisoning or first-aid medication, hemostasis and pain relief, and self-rescue of biological and chemical weapons.
  • the existing injection pen is inconvenient to adjust the dosage, and it is difficult to precisely control the dosage at the time of injection.
  • the object of the present invention is to provide a fine-tuning injection pen, which can effectively solve the problem of inaccurate adjustment of medication dosage.
  • the present invention provides the following technical solutions:
  • a fine-tuning injection pen that includes:
  • a differential screw transmission mechanism comprising: a push rod for pushing the cork stopper, a push rod nut threadedly coupled to the push rod, and a positioning rotary ratchet axially abutting the push rod nut, one end and the Positioning a rotating ratchet that can be coupled to the clutch, and a ratchet that controls the rotation of the adjusting rod, the ratchet cylinder being sleeved outside the adjusting rod;
  • a dose adjustment mechanism comprising a knob, a digital tube, an adjustment cylinder and a ratchet connecting ring, and an adjustment connecting sleeve, the ratchet connecting ring being sleeved outside the adjusting rod, the adjusting connecting sleeve being sleeved on the adjusting rod and
  • the ratchet connecting ring and the outside of the ratchet barrel, the ratchet teeth at both ends of the ratchet connecting ring are inclined in the same direction, and the two ends of the ratchet connecting ring are respectively connected to the adjusting rod and the ratchet by the ratchet a ratchet tube connected
  • the adjusting connecting barrel is externally connected to the adjusting cylinder by a thread
  • the digital tube is sleeved outside the adjusting connecting barrel, and a top end of the digital tube is snapped inside the knob
  • the outer wall of the digital tube is provided with a spiral line distributed in a spiral shape
  • the differential screw drive is disposed in the housing, the housing is provided with a window for displaying a scale on the digital tube, and a pen for mounting the cassette is disposed in the housing Core frame
  • An injection mechanism includes a button connector that has one end in contact with one end of the ratchet barrel, a button that pushes the button connector to move axially, and a button spring that abuts the button connector and the button at both ends, After the button is pressed, the button connector and the ratchet connecting ring perform axial movement, and the digital tube performs helical axial movement.
  • a return spring is provided in the housing for pushing the push rod nut downward, thereby driving the positioning rotary ratchet and the adjusting rod are separated from each other, and the bottom end of the return spring is abutted The upper end of the push rod nut.
  • the housing is further provided with positioning teeth, the positioning tooth sleeve is disposed outside the adjusting rod, and the adjusting rod is externally sleeved with an injection sound ratchet and an injection bouncing spring, and the injection sound ratchet passes The injection bounce spring is docked with the positioning teeth.
  • a pusher head is arranged between the push rod nut and the cassette stopper.
  • the adjusting rod is provided with an axially distributed groove outside, and the ratchet barrel is internally provided with a slider that cooperates with the groove.
  • the window is provided with a window cover.
  • the invention provides a fine adjustment injection pen, comprising: a differential screw transmission mechanism, comprising: a push rod for pushing a cork stopper, a push rod nut threadedly connected to the push rod, and an axial joint of the push rod nut Positioning a rotating ratchet, an adjusting rod connected at one end to the positioning rotating ratchet, and a ratchet barrel controlling the rotation of the adjusting rod, the ratchet tube is sleeved outside the adjusting rod; the dose adjusting mechanism includes a knob, a digital tube, and an adjustment The barrel and the ratchet connecting ring and the adjusting connecting barrel, the ratchet connecting ring is sleeved outside the adjusting rod, the adjusting connecting sleeve is sleeved on the adjusting rod and the ratchet connecting ring and the outside of the ratchet barrel, and the ratchet teeth at both ends of the ratchet connecting ring are inclined The directions are the same, the two ends
  • the body is provided with a pen holder for placing the bottle;
  • the injection mechanism comprises a button connector with one end contacting the one end of the ratchet barrel, a button for pushing the button connector to move axially, and two ends respectively abutting the button connector and Button spring of the button.
  • the pusher nut When the cartridge is loaded into the refill holder, the pusher nut is forced to slide upwards, and the positioning rotary ratchet also moves. After the cartridge is assembled, the ratchet teeth of the positioning ratchet and the end of the adjustment rod are positioned. Match.
  • the knob, the digital tube, the adjusting cylinder, the ratchet connecting ring, the ratchet cylinder and the button connecting member, and the button are simultaneously moved upward, wherein the adjusting cylinder performs the screw lead rotation movement, the adjusting cylinder and the adjusting barrel
  • the ratchet connecting ring is a ratchet assembly, and at the same time, due to the reaction force of the button spring, during the adjustment process, the contact between the ratchet connecting ring and the ratchet barrel will be “click” under the action of the ratchet, during adjustment.
  • the adjusted dose can be observed through the window. If the dose is too much, the dose can be adjusted by turning the knob.
  • the ratchet connection and adjustment during the callback The contact of the tube will also produce a "click" sound under the action of the ratchet. The sound can be used to remind the user of the sound.
  • the visual prompt of the window is combined to facilitate the adjustment of the dose.
  • the injection can be performed, and the button is pressed, and the button connector moves linearly along its axial direction, and simultaneously drives the ratchet cylinder, the ratchet connecting ring, the adjusting cylinder and the digital tube, the adjusting rod, and the positioning rotation.
  • the ratchet makes a spiral motion, which in turn drives the push rod to rotate.
  • the push rod moves axially, and then pushes the card stopper to achieve the purpose of injection.
  • the fine-tuning pen can be reused to prevent traditional disposable pen supplies from reducing medical waste.
  • the injection precision can be effectively improved by converting the spiral motion into a linear motion.
  • FIG. 1 is a cross-sectional structural view of a fine adjustment injection pen provided by a specific embodiment of the present invention
  • FIG. 2 is a schematic view showing an explosion structure of a fine adjustment injection pen according to an embodiment of the present invention
  • FIG. 3 is a cross-sectional view showing the structure of a fine adjustment injection pen according to an embodiment of the present invention.
  • 1 is a button
  • 2 is a knob
  • 3 is a housing
  • 4 is a window
  • 5 is a window cover
  • 6 is an adjustment connection cylinder
  • 7 is an adjustment cylinder
  • 8 is a ratchet cylinder
  • 9 is a ratchet connection ring
  • 10 is an injection sound Ratchet
  • 11 is the return spring
  • 12 is the refill connector barrel
  • 13 is the cap
  • 14 is the button spring
  • 15 is the digital tube
  • 16 is the button connector
  • 17 is the adjustment lever
  • 18 is the push rod
  • 19 is the injection bounce Spring
  • 20 is a positioning tooth
  • 21 is a positioning rotating ratchet
  • 22 is a push rod nut
  • 23 is a putter head
  • 24 is a pen holder.
  • the embodiment of the present invention provides a fine-tuning injection pen, which is rotated by a knob to drive the digital tube, the adjustment tube, the ratchet connection ring, the ratchet tube and the button connector.
  • the button moves upwards at the same time, wherein the adjusting cylinder performs the screw lead rotation movement, the adjusting cylinder and the ratchet connecting ring are the ratchet fitting, and at the same time, due to the reaction force of the button spring, the ratchet connecting ring and the ratchet barrel during the adjusting process The contact will be under the action of the ratchet, and the “click” sound will be heard.
  • the adjusted dose can be observed through the window.
  • the dose can be adjusted by the rotary knob, due to the ratchet connection. Both ends are provided with ratchet teeth, so in the callback, the contact between the ratchet connecting ring and the adjusting cylinder will also produce a "click" sound under the action of the ratchet, and the sound can be given to the user through the sound, in addition to the combination
  • the visual cues of the window facilitate the adjustment of the dose.
  • the fine-tuning pen can be reused to prevent traditional disposable pen supplies from reducing medical waste. Compared with the conventional direct push type pen, the injection precision can be effectively improved by converting the spiral motion into a linear motion.
  • FIG. 1 is a cross-sectional structural view of a fine adjustment injection pen according to an embodiment of the present invention
  • FIG. 2 is a fine adjustment injection pen provided by a specific embodiment of the present invention
  • FIG. 3 is a schematic cross-sectional view showing a structure of a fine adjustment injection pen according to an embodiment of the present invention.
  • a specific embodiment of the present invention provides a fine adjustment injection pen comprising: a differential screw transmission mechanism including a push rod 18 for pushing a cork stopper, a push rod nut 22 screwed to the push rod 18, a positioning rotating ratchet 21 axially butted with the push rod nut 22, an adjusting rod 17 at one end of which the positioning rotating ratchet 21 is disengageable, and a ratchet barrel 8 for controlling the rotation of the adjusting rod 17, the ratchet barrel 8 being sleeved in the adjustment
  • the rod 17 is external;
  • the dose adjusting mechanism comprises a knob 2, a digital tube 15, an adjusting cylinder 7 and a ratchet connecting ring 9 and an adjusting connecting barrel 6, and the ratchet connecting ring 9 is sleeved outside the adjusting rod 17, and the connecting tube 6 is adjusted.
  • the ratchet teeth at both ends of the ratchet connecting ring 9 are inclined in the same direction, and the two ends of the ratchet connecting ring 9 are respectively connected to the adjusting rod 17 and the ratchet by the ratchet teeth.
  • the toothed barrel 8 is connected, and the adjusting connecting barrel 6 is screwed to the outside of the adjusting cylinder 7.
  • the digital tube 15 is sleeved outside the adjusting connecting barrel 6, and the tail end of the digital tube 15 is screwed inside the knob 2, and the tail end of the digital tube 15 is sleeved.
  • the outer wall of the digital tube 15 is provided with a spiral a scale line of the cloth; a housing 3, a differential screw drive disposed in the housing 3, the housing 3 is provided with a window 4 for displaying a scale on the digital tube 15, and the housing 3 is provided with a cassette for placing the cassette
  • the injection mechanism comprises a button connector 16 having one end contacting the one end of the ratchet barrel 8, and a button 1 for pushing the button connector 16 to move axially, and the two ends respectively abut the button connector 16 and the button 1 Button spring 14.
  • the pusher nut 22 is forced to slide upward, and the positioning rotary ratchet 21 is also moved, after the cartridge is assembled.
  • the positioning rotary ratchet 21 and the ratchet of the end of the adjustment rod 17 are matched with each other.
  • the pen holder 24 can be connected to the casing 3 through the connecting barrel 12 of the pen holder 24, and the pen holder 13 is further sleeved outside the pen holder 24.
  • the knob 2 is rotated to drive the digital tube 15, the adjusting barrel 7, the ratchet connecting ring 9, the ratchet barrel 8 and the button connecting member 16 and the button 1 to move upward simultaneously, wherein the adjusting barrel 7 is threaded.
  • the guide rotary motion, the adjustment cylinder 7 and the ratchet coupling ring 9 are ratchet fitting, and at the same time, due to the reaction force of the button spring 14, the contact between the ratchet coupling ring 9 and the ratchet cylinder 8 is at the ratchet during the adjustment process. Under the action of the action, there will be a "beep" sound.
  • the adjusted dose can be observed through the window 4.
  • the dose can be adjusted by turning the knob 2, since both ends of the ratchet connecting ring 9 are There is a ratchet tooth, so when the callback is made, the contact between the ratchet connecting ring 9 and the adjusting cylinder 7 will also have a "click" sound under the action of the ratchet, and the sound can be given to the user by sound, and the window is combined with the window. 4 visual cues that facilitate dose adjustment.
  • the injection can be performed, and the button 1 is pressed, and the button connector 16 is linearly moved along the axial direction thereof, and the ratchet barrel 8, the ratchet connecting ring 9, the adjusting barrel 7 and the digital tube 15 are driven.
  • the adjusting rod 17 and the positioning rotating ratchet 21 perform a spiral motion, and then the push rod 18 is rotated. Under the action of the push rod nut 22, the push rod 18 moves axially, thereby pushing the card stopper, thereby achieving the purpose of injection. .
  • the fine-tuning injection pen provided by the above embodiments can be repeatedly used to avoid the traditional disposable injection pen consumables to reduce medical waste. It is also worth mentioning that, compared with the conventional direct push type pen, the injection precision can be effectively improved by converting the spiral motion into a linear motion.
  • the housing 3 is provided with a return spring 11 for pushing the push rod nut 22 downward, thereby driving the positioning rotary ratchet 21 and the adjusting rod 17 to be separated from each other, and the bottom end of the return spring 11 abuts against the push rod nut.
  • the upper end of 22 is provided with a return spring 11 for pushing the push rod nut 22 downward, thereby driving the positioning rotary ratchet 21 and the adjusting rod 17 to be separated from each other, and the bottom end of the return spring 11 abuts against the push rod nut. The upper end of 22.
  • the return spring 11 When the cartridge is installed, the return spring 11 is contracted under the squeeze of the pusher nut 22; after the cartridge is removed, the pusher nut 22, under the action of the return spring 11, pushes the pusher nut 22 downward. Since the pusher nut 22 and the positioning rotary ratchet 21 are connected to each other, the positioning rotary ratchet 21 and the adjustment lever 17 can be separated from each other.
  • the housing 3 is further provided with positioning teeth 20, the positioning teeth 20 are sleeved outside the adjusting rod 17, and the adjusting rod 17 is externally sleeved with the injection sound ratchet 10 and the injection bouncing spring 19, and the injection sound ratchet 10 passes.
  • the injection bounce spring 19 is butted against the positioning teeth 20.
  • the adjustment rod 17 and the injection acoustic ratchet 10 are linearly moved, and under the squeeze of the injection bounce spring 19, the injection acoustic ratchet 10 and the positioning tooth 20 are butted.
  • a pusher head 23 is provided between the push rod nut 22 and the cassette stopper.
  • a chamber can be arranged on the pusher head 23, and a clamp block is arranged at the end of the push rod 18, and the block is stuck in the chamber, so that when the push rod 18 rotates, the pusher head 23 is not driven to rotate, only the push rod The head 23 produces an axial movement.
  • the adjustment rod 17 is provided with a groove distributed in the axial direction outside, and the ratchet barrel 8 is internally provided with a slider which cooperates with the groove.
  • the movement of the ratchet cylinder 8 is facilitated by the groove, and the ratchet cylinder 8 is also facilitated to rotate the adjustment rod 17.
  • Two symmetrically disposed grooves may be disposed on the adjustment rod 17, and the inner ring of the injection acoustic ratchet 10 is also provided with a slider adapted to the groove to facilitate the synchronous rotation of the adjustment rod 17 and the injection acoustic ratchet 10. .
  • a window cover 5 is provided on the window 4.
  • the scale on the digital tube 15 can be protected by the window cover 5 to increase its service life, wherein the window cover 5 is preferably a transparent window cover 5.

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

一种微调注射笔，包括：差动螺旋传动机构，包括推杆（18）、推杆螺母（22）、定位旋转棘齿（21）、调节杆（17）、棘齿筒（8）；剂量调节机构，包括旋钮（2）、数码筒（15）、调节筒（7）、棘齿连接圈（9）以及调节连接筒（6）；壳体（3），差动螺旋传动机构设置在壳体（3）内，壳体（3）上设有视窗（4），壳体（3）内设有笔芯架（24）；注射机构，包括按键连接件（16）、按键（1）和按键弹簧（14）。在调节过程中，棘齿连接圈（9）和棘齿筒（8）的接触处在棘齿的作用下会出现"咔"响声，给用户以声音提醒。此外，结合视窗（4）的视觉提示，有利于剂量的调节。该微调注射笔还可以重复使用，通过将螺旋运动转化为直线运动，可提高一定的注射精度。

Description

微调注射笔
本申请要求于2017年08月08日提交中国专利局、申请号为201710671909.3、发明名称为“微调注射笔”和2017年08月08日提交中国专利局、申请号为201720979435.4、实用新型名称为“微调注射笔”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及医疗器械技术领域，特别是涉及一种微调注射笔。
背景技术
传统的药物注射通常需要专业医护人员采用一次性无菌注射器进行注射，其注射过程难免会产生玻璃碎屑、并造成药液浪费等问题。
为解决上述问题，应运而生了一种可以自我注射的注射笔，在实施注射时，只需将药瓶装入注射笔内，连接相配套的针头就可以实现自我注射，整个注射过程不会产生玻璃碎屑，药液不发生转移，不会暴露在空气中，因此可保证用药的安全性，提高用药的便捷性。
其可应用于各类急救和慢性疾病糖尿病等，帮助心脑血管病患者、低血糖患者实现自我注射，其次还可应用于急性中毒或者患者发病时的急救用药、止血止痛、生化武器的自救。但是现有的注射笔不便于调节用药量，而且在注射时难以精确控制用药量。
因此，如何提供一种微调注射笔，以便于剂量的调节以及提高其用药量精度，是本领域技术人员急需解决的技术问题。
发明内容
本发明的目的是提供一种微调注射笔，可以有效解决用药量调节不精确等问题。
为解决上述技术问题，本发明提供了如下技术方案：
一种微调注射笔，包括：
差动螺旋传动机构，其包括用于推动卡式瓶塞的推杆、与所述推杆螺纹连接的推杆螺母、和所述推杆螺母轴向对接的定位旋转棘齿、一端与所述定位旋转棘齿可离合连接的调节杆、以及控制所述调节杆旋转的棘齿筒，所述棘齿筒套设在所述调节杆外部；
剂量调节机构，其包括旋钮、数码筒、调节筒和棘齿连接圈以及调节连接筒，所述棘齿连接圈套设在所述调节杆外部，所述调节连接筒套设在所述调节杆和所述棘齿连接圈以及所述棘齿筒外部，所述棘齿连接圈两端的棘齿的倾斜方向相同，所述棘齿连接圈的两端通过棘齿分别与所述调节杆和所述棘齿筒连接，所述调节连接筒通过螺纹连接在所述调节筒外部，所述数码筒套接在所述调节连接筒外部，所述数码筒的顶端卡接在所述旋钮内部，所述数码筒外壁设有呈螺旋状分布的刻度线；
壳体，所述差动螺旋传动设置在所述壳体内，所述壳体上设有用于显示所述数码筒上的刻度的视窗，所述壳体内设有用于安装所述卡式瓶的笔芯架；
注射机构，其包括一端和所述棘齿筒的一端接触的按键连接件、推动所述按键连接件轴向移动的按键、两端分别抵紧所述按键连接件和所述按键的按键弹簧，在按压所述按键后，所述按键连接件和所述棘齿连接圈做轴向运动，所述数码筒做螺旋轴向运动。
优选地，所述壳体内设有用于推动所述推杆螺母向下移动、进而带动所述定位旋转棘齿和所述调节杆相互分离的复位弹簧，所述复位弹簧的底端端抵紧在所述推杆螺母的上端。
优选地，所述壳体内还设有定位齿，所述定位齿套设在所述调节杆外部，所述调节杆外部套设有注射声响棘齿和注射弹跳弹簧，所述注射声响棘齿通过注射弹跳弹簧和所述定位齿对接。
优选地，所述推杆螺母和所述卡式瓶塞之间设有推杆头。
优选地，所述调节杆外部设有沿轴向分布的沟槽，所述棘齿筒内部设 有和所述沟槽配合的滑块。
优选地，所述视窗上设有视窗盖。
与现有技术相比，上述技术方案具有以下优点：
本发明所提供的一种微调注射笔，包括：差动螺旋传动机构，其包括用于推动卡式瓶塞的推杆、与推杆螺纹连接的推杆螺母、和推杆螺母轴向对接的定位旋转棘齿、一端与定位旋转棘齿可离合连接的调节杆、以及控制调节杆旋转的棘齿筒，棘齿筒套设在调节杆外部；剂量调节机构，其包括旋钮、数码筒、调节筒和棘齿连接圈以及调节连接筒，棘齿连接圈套设在调节杆外部，调节连接筒套设在调节杆和棘齿连接圈以及棘齿筒外部，棘齿连接圈两端的棘齿的倾斜方向相同，棘齿连接圈的两端通过棘齿分别与调节杆和棘齿筒连接，调节连接筒通过螺纹连接在调节筒外部，数码筒套接在调节连接筒外部，数码筒的顶端卡接在旋钮内部，数码筒外壁设有呈螺旋状分布的刻度线；壳体，差动螺旋传动设置在壳体内，壳体上设有用于显示数码筒上的刻度的视窗，壳体内设有用于放置卡式瓶的笔芯架；注射机构，其包括一端和棘齿筒的一端接触的按键连接件、推动按键连接件轴向移动的按键、两端分别抵紧按键连接件和按键的按键弹簧。
将卡式瓶装入笔芯架中时，推杆螺母受力向上滑动，同时定位旋转棘齿也随之移动，在卡式瓶装配到位后，定位旋转棘齿与调节杆端部的棘齿相互吻合。注射前进行计量调节时，通过旋转旋钮，以带动数码筒、调节筒、棘齿连接圈、棘齿筒和按键连接件以及按键同时向上移动，其中调节筒做螺纹导程旋转运动，调节筒与棘齿连接圈是棘齿装配，同时由于按键弹簧的反作用力，因此在调节过程中，棘齿连接圈和棘齿筒的接触处在棘齿的作用下会出现“咔”响声，在调节时可通过视窗观察所调节的剂量，若调节剂量过多，可通过回转旋钮来进行剂量的回调，由于棘齿连接圈的两端均设有棘齿，因此在回调时，棘齿连接圈和调节筒的接触处在棘齿的作用下会也会出现“咔”响声，通过响声，可以给用户以声音提醒，此外结合视窗的视觉提示，有利于剂量的调节。
在调节至所需要的剂量后，即可进行注射，按压按键，按键连接件沿其轴线方向做直线运动，同时带动棘齿筒、棘齿连接圈、调节筒和数码筒、调节杆、定位旋转棘齿做螺旋运动，继而带动推杆旋转，在推杆螺母的作用下，推杆做轴向移动，进而推动卡式瓶塞，即可实现注射目的。该微调注射笔可以重复使用，避免传统一次性注射笔耗材减少医疗垃圾。此外相对于传统的直推式注射笔，通过将螺旋运动转化为直线运动，可有效提高注射精度。
附图说明
为了更清楚地说明本发明或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明一种具体实施方式所提供的一种微调注射笔的剖视结构示意图；
图2为本发明一种具体实施方式所提供的一种微调注射笔的爆炸结构示意图；
图3为本发明一种具体实施方式所提供的一种微调注射笔的剖视部分结构示意图。
附图标记如下：
1为按键，2为旋钮，3为壳体，4为视窗，5为视窗盖，6为调节连接筒，7为调节筒，8为棘齿筒，9为棘齿连接圈，10为注射声响棘齿，11为复位弹簧，12为笔芯架连接筒，13为笔帽，14为按键弹簧，15为数码筒，16为按键连接件，17为调节杆，18为推杆，19为注射弹跳弹簧，20为定位齿，21为定位旋转棘齿，22为推杆螺母，23为推杆头，24为笔芯架。
具体实施方式
正如背景技术部分所述，目前的注射笔在注射时不便于剂量的调节。
基于上述研究的基础上，本发明实施例提供了一种微调注射笔，注射前进行计量调节时，通过旋转旋钮，以带动数码筒、调节筒、棘齿连接圈、棘齿筒和按键连接件以及按键同时向上移动，其中调节筒做螺纹导程旋转运动，调节筒与棘齿连接圈是棘齿装配，同时由于按键弹簧的反作用力，因此在调节过程中，棘齿连接圈和棘齿筒的接触处在棘齿的作用下会出现“咔”响声，在调节时可通过视窗观察所调节的剂量，若调节剂量过多，可通过回转旋钮来进行剂量的回调，由于棘齿连接圈的两端均设有棘齿，因此在回调时，棘齿连接圈和调节筒的接触处在棘齿的作用下会也会出现“咔”响声，通过响声，可以给用户以声音提醒，此外结合视窗的视觉提示，有利于剂量的调节。此外该微调注射笔可以重复使用，避免传统一次性注射笔耗材减少医疗垃圾。相对于传统的直推式注射笔，通过将螺旋运动转化为直线运动，可有效提高注射精度。
为了使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。
在以下描述中阐述了具体细节以便于充分理解本发明。但是本发明能够以多种不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似推广。因此本发明不受下面公开的具体实施方式的限制。
请参考图1-图3，图1为本发明一种具体实施方式所提供的一种微调注射笔的剖视结构示意图；图2为本发明一种具体实施方式所提供的一种微调注射笔的爆炸结构示意图；图3为本发明一种具体实施方式所提供的一种微调注射笔的剖视部分结构示意图。
本发明的一种具体实施方式提供了一种微调注射笔，包括：差动螺旋传动机构，其包括用于推动卡式瓶塞的推杆18、与推杆18螺纹连接的推杆螺母22、和推杆螺母22轴向对接的定位旋转棘齿21、一端与定位旋转 棘齿21可离合连接的调节杆17、以及控制调节杆17旋转的棘齿筒8，棘齿筒8套设在调节杆17外部；剂量调节机构，其包括旋钮2、数码筒15、调节筒7和棘齿连接圈9以及调节连接筒6，棘齿连接圈9套设在调节杆17外部，调节连接筒6套设在调节杆17和棘齿连接圈9以及棘齿筒8外部，棘齿连接圈9两端的棘齿的倾斜方向相同，棘齿连接圈9的两端通过棘齿分别与调节杆17和棘齿筒8连接，调节连接筒6通过螺纹连接在调节筒7外部，数码筒15套接在调节连接筒6外部，数码筒15的尾端螺纹连接在旋钮2内部，数码筒15的尾端套接在调节筒7外部，数码筒15外壁设有呈螺旋状分布的刻度线；壳体3，差动螺旋传动设置在壳体3内，壳体3上设有用于显示数码筒15上的刻度的视窗4，壳体3内设有用于放置卡式瓶的笔芯架24；注射机构，其包括一端和棘齿筒8的一端接触的按键连接件16、推动按键连接件16轴向移动的按键1、两端分别抵紧按键连接件16和按键1的按键弹簧14。
应用本实施例提供的微调注射笔时，将卡式瓶装入笔芯架24中时，推杆螺母22受力向上滑动，同时定位旋转棘齿21也随之移动，在卡式瓶装配到位后，定位旋转棘齿21与调节杆17端部的棘齿相互吻合。其中笔芯架24可通过笔芯架24连接筒12连接在壳体3上，笔芯架24外还套设有笔帽13。
注射前进行计量调节时，通过旋转旋钮2，以带动数码筒15、调节筒7、棘齿连接圈9、棘齿筒8和按键连接件16以及按键1同时向上移动，其中调节筒7做螺纹导程旋转运动，调节筒7与棘齿连接圈9是棘齿装配，同时由于按键弹簧14的反作用力，因此在调节过程中，棘齿连接圈9和棘齿筒8的接触处在棘齿的作用下会出现“咔”响声，在调节时可通过视窗4观察所调节的剂量，若调节剂量过多，可通过回转旋钮2来进行剂量的回调，由于棘齿连接圈9的两端均设有棘齿，因此在回调时，棘齿连接圈9和调节筒7的接触处在棘齿的作用下会也会出现“咔”响声，通过响声，可以给用户以声音提醒，此外结合视窗4的视觉提示，有利于剂量的调节。
在调节至所需要的剂量后，即可进行注射，按压按键1，按键连接件16沿其轴线方向做直线运动，同时带动棘齿筒8、棘齿连接圈9、调节筒7和数码筒15、调节杆17、定位旋转棘齿21做螺旋运动，继而带动推杆18旋转，在推杆螺母22的作用下，推杆18做轴向移动，进而推动卡式瓶塞，即可实现注射目的。
此外上述实施例提供的微调注射笔，可以重复使用，避免传统一次性注射笔耗材减少医疗垃圾。还值得一提的是，相对于传统的直推式注射笔，通过将螺旋运动转化为直线运动，可有效提高注射精度。
进一步地，壳体3内设有用于推动推杆螺母22向下移动、进而带动定位旋转棘齿21和调节杆17相互分离的复位弹簧11，复位弹簧11的底端端抵紧在推杆螺母22的上端。
在安装卡式瓶时，复位弹簧11在推杆螺母22的挤压下进行收缩；在取出卡式瓶之后，推杆螺母22在复位弹簧11的作用下，会推动推杆螺母22向下移动，由于推杆螺母22和定位旋转棘齿21相互连接，因此可使得定位旋转棘齿21和调节杆17相互分离。
更进一步地，壳体3内还设有定位齿20，定位齿20套设在调节杆17外部，调节杆17外部套设有注射声响棘齿10和注射弹跳弹簧19，注射声响棘齿10通过注射弹跳弹簧19和定位齿20对接。
在装配卡式瓶的过程中，调节杆17和注射声响棘齿10做直线运动，在注射弹跳弹簧19的挤压下，注射声响棘齿10和定位齿20对接。
在注射过程中，由于定位齿20固定不动，通过注射声响棘齿10的转动，可产生“咔”响声，以便于给用户听觉上的注射提醒。
为了优化上述实施例提供的推杆18的使用效果，推杆螺母22和卡式瓶塞之间设有推杆头23。其中可在推杆头23上设置一腔室，推杆18末端设有卡块，卡块卡在腔室中，使得推杆18转动时，不会带动推杆头23转动，仅是推杆头23产生轴向的移动。
进一步地，调节杆17外部设有沿轴向分布的沟槽，棘齿筒8内部设有 和沟槽配合的滑块。通过沟槽便于棘齿筒8的移动，也便于棘齿筒8带动调节杆17转动。其中可在调节杆17上设置两条对称设置的沟槽，此外注射声响棘齿10内圈也设有和沟槽相互适应的滑块，以便于调节杆17和注射声响棘齿10进行同步转动。
更进一步地，视窗4上设有视窗盖5。通过视窗盖5可对数码筒15上的刻度进行保护，以提高其使用寿命，其中优选视窗盖5为透明的视窗盖5。
还需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (6)

  1. 一种微调注射笔，其特征在于，包括：
    差动螺旋传动机构，其包括用于推动卡式瓶塞的推杆、与所述推杆螺纹连接的推杆螺母、和所述推杆螺母轴向对接的定位旋转棘齿、一端与所述定位旋转棘齿可离合连接的调节杆、以及控制所述调节杆旋转的棘齿筒，所述棘齿筒套设在所述调节杆外部；
    剂量调节机构，其包括旋钮、数码筒、调节筒和棘齿连接圈以及调节连接筒，所述棘齿连接圈套设在所述调节杆外部，所述调节连接筒套设在所述调节杆和所述棘齿连接圈以及所述棘齿筒外部，所述棘齿连接圈两端的棘齿的倾斜方向相同，所述棘齿连接圈的两端通过棘齿分别与所述调节杆和所述棘齿筒连接，所述调节连接筒通过螺纹连接在所述调节筒外部，所述数码筒套接在所述调节连接筒外部，所述数码筒的顶端卡接在所述旋钮内部，所述数码筒外壁设有呈螺旋状分布的刻度线；
    壳体，所述差动螺旋传动设置在所述壳体内，所述壳体上设有用于显示所述数码筒上的刻度的视窗，所述壳体内设有用于安装所述卡式瓶的笔芯架；
    注射机构，其包括一端和所述棘齿筒的一端接触的按键连接件、推动所述按键连接件轴向移动的按键、两端分别抵紧所述按键连接件和所述按键的按键弹簧，在按压所述按键后，所述按键连接件和所述棘齿连接圈做轴向运动，所述数码筒做螺旋轴向运动。
  2. 根据权利要求1所述的微调注射笔，其特征在于，所述壳体内设有用于推动所述推杆螺母向下移动、进而带动所述定位旋转棘齿和所述调节杆相互分离的复位弹簧，所述复位弹簧的底端端抵紧在所述推杆螺母的上端。
  3. 根据权利要求2所述的微调注射笔，其特征在于，所述壳体内还设有定位齿，所述定位齿套设在所述调节杆外部，所述调节杆外部套设有注射声响棘齿和注射弹跳弹簧，所述注射声响棘齿通过注射弹跳弹簧和所述 定位齿对接。
  4. 根据权利要求3所述的微调注射笔，其特征在于，所述推杆螺母和所述卡式瓶塞之间设有推杆头。
  5. 根据权利要求4所述的微调注射笔，其特征在于，所述调节杆外部设有沿轴向分布的沟槽，所述棘齿筒内部设有和所述沟槽配合的滑块。
  6. 根据权利要求5所述的微调注射笔，其特征在于，所述视窗上设有视窗盖。
PCT/CN2018/071357 2017-08-08 2018-01-04 微调注射笔 WO2019029123A1 (zh)

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