WO2024011694A1 - 可抛式胰岛素泵 - Google Patents

可抛式胰岛素泵 Download PDF

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Publication number
WO2024011694A1
WO2024011694A1 PCT/CN2022/111045 CN2022111045W WO2024011694A1 WO 2024011694 A1 WO2024011694 A1 WO 2024011694A1 CN 2022111045 W CN2022111045 W CN 2022111045W WO 2024011694 A1 WO2024011694 A1 WO 2024011694A1
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WIPO (PCT)
Prior art keywords
push
screw
assembly
housing
component
Prior art date
Application number
PCT/CN2022/111045
Other languages
English (en)
French (fr)
Inventor
刘祥华
谭益民
刘师宏
章静
杨超
郑湘明
陈一
刘超
Original Assignee
湖南千山医疗器械有限公司
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Publication date
Application filed by 湖南千山医疗器械有限公司 filed Critical 湖南千山医疗器械有限公司
Publication of WO2024011694A1 publication Critical patent/WO2024011694A1/zh

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    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • A61M2005/14252—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type with needle insertion 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring

Definitions

  • the present invention relates to the technical field of medical equipment, and in particular, to a disposable insulin pump.
  • Insulin pumps simulate physiological insulin secretion patterns to mediate patients according to the characteristics of physiological insulin secretion at different times. Therefore, using insulin pumps to treat diabetic patients is a more humane treatment method that is more in line with physiological insulin secretion patterns.
  • Existing insulin pumps usually have a control part, a driving part, a pushing part and an injection part.
  • the control part controls the driving part to provide driving force for the pushing part, and then controls the injection part to inject insulin into the patient's body.
  • Relevant regulations stipulate that after the injection part completes the injection operation, the injection part needs to be disposed of in a suitable manner.
  • the insulin pump is designed with an integral structure, which makes it troublesome to disassemble and assemble the insulin pump.
  • the injection part usually has a liquid storage tube for storing medical liquid and a piston arranged in the liquid storage pipe, the execution part uses a stepwise rotatable screw rod to push the piston to move to realize the liquid injection.
  • the existing insulin pump is equivalent to a disposable product and can only be discarded after use.
  • An insulin pump costs at least 40,000 to 50,000 yuan. , even hundreds of thousands, and its cost is mainly reflected in the control part, driving part and execution part. It is expensive to use multiple times, which greatly increases the cost of use for patients. It is expensive to use for a long time and is not used by patients with type 2 diabetes.
  • the invention provides a disposable insulin pump to solve the technical problems that the insulin pump can only be discarded after use by the patient, is expensive to use multiple times, and has large volume or high power consumption.
  • a disposable insulin pump which includes an injection component for injecting medicinal liquid into a patient's body, a push screw fixedly connected to the injection component, and a drive screw detachably connected to the push screw.
  • the push component, the electromagnetic drive component and the control component are of an integral structure.
  • the disposable insulin pump includes a first housing and a second housing that is detachably and assembledly connected to the first housing along the axial direction of the push screw.
  • the injection component is arranged in the first housing, and the push component and electromagnetic drive The components and control components are arranged in the second housing.
  • the pushing component includes a mounting shell, a ratchet mechanism rotatably arranged on the mounting shell, a screw sleeve slidably arranged in the ratchet mechanism along the axial direction and sleeved on the outside of the pushing screw rod, and a screw sleeve fixedly arranged on the mounting shell.
  • the locking mechanism on the ratchet mechanism is used to fix or loosen the screw sleeve
  • the swinging piece is rotatably arranged on the installation shell and arranged correspondingly with the ratchet mechanism.
  • the swinging piece is arranged correspondingly with the electromagnetic drive assembly, and the screw sleeve and Push the screw thread to connect.
  • the electromagnetic driving assembly includes an electromagnet arranged corresponding to the swinging member for electromagnetically driving the swinging member to swing, and a power supply member electrically connected to the electromagnet and the control assembly respectively.
  • the electromagnet includes two magnetic poles spaced apart and pointing in opposite directions. The component is used to change the magnetism and direction of the two magnetic poles at a preset frequency to drive the swinging component to reciprocate in the extended area between the two magnetic poles.
  • the installation housing includes a connecting post arranged along the height direction of the installation housing.
  • the swinging member is rotatably mounted on the connecting post.
  • the swinging member includes an extension area arranged between the two magnetic poles and maintains a predetermined position with the electromagnet.
  • the end of the installation housing away from the magnetic part is provided with a plurality of limiting posts arranged along the height direction of the installation housing.
  • the plurality of limiting posts are spaced apart along the length direction of the installation housing and form a limiting gap.
  • the end of the swinging member away from the magnetic attraction portion is provided with a pin extending along the length direction of the swinging member and extending into the limiting gap for abutting with the limiting post during the swinging process of the swinging member to limit the swing range of the swinging member. Limiting part.
  • the ratchet mechanism includes a rotating shaft rotatably arranged on the installation housing, a ratchet wheel fixedly sleeved on the outside of the rotating shaft, and a plurality of ratchet teeth arranged sequentially along the circumferential direction of the ratchet wheel.
  • the rotating shaft is provided with an axial opening.
  • the sliding cavity is slidingly connected to the screw sleeve.
  • the locking mechanism includes a locking screw that penetrates the rotating shaft in the radial direction of the rotating shaft and is used to extend into the sliding cavity to press against the fixed screw sleeve.
  • the locking screw is threadedly connected to the rotating shaft.
  • the outer wall of the screw sleeve is provided with a fixing groove along the radial direction for plug-fitting with the locking screw.
  • the pushing component includes a mounting shell, a ratchet mechanism rotatably arranged on the mounting shell, a screw sleeve fixedly arranged in the ratchet mechanism and sleeved on the outside of the pushing screw rod, and a screw sleeve rotatably arranged on the mounting shell.
  • the swinging member is arranged correspondingly to the ratchet mechanism, and the swinging member is arranged correspondingly to the electromagnetic drive assembly.
  • the screw sleeve includes a threaded driving part that is threadedly connected to the pushing screw for driving the axial movement of the screw through a threaded structure and a pushing part. The sliding part of the screw sliding connection is used to push the screw to slide out of the screw sleeve.
  • the control component when it is necessary to inject medicinal liquid into the patient's body, the control component is first used to control the operation of the electromagnetic drive component, and the push component is driven by the electromagnetic drive, and then the push screw is extended to push the injection component.
  • the patient's medical liquid injection treatment can be achieved.
  • the pushing screw and the pushing assembly are separated.
  • the control assembly, electromagnetic driving assembly and pushing assembly and other more expensive components can be integrated together. And remove it, the patient only needs to spend a small cost to purchase the push screw and injection assembly and assemble them for normal use. It is economical and environmentally friendly, and is conducive to the recycling of resources.
  • the used push screw and injection assembly should be disposed of in an appropriate way.
  • this solution realizes the reuse of control components, electromagnetic drive components and push components by detachably connecting the push screw and push components, and provides driving power by using electromagnetic drive.
  • driving devices such as motors and reducers, which is conducive to the miniaturization of the device and is easy to use and carry.
  • the electromagnetic drive makes the power output more stable, direct and reliable, which is conducive to precise control of the amount of insulin injected into the patient, ensuring The patient is healthy.
  • the energy conversion efficiency of electromagnetic generation is higher than that of electric heating, and the power consumption is low. It can be used for a long time with the same power, making it convenient for patients to use it for a long time.
  • Figure 1 is a schematic structural diagram of a disposable insulin pump according to a preferred embodiment of the present invention.
  • Figure 2 is a schematic structural diagram of a disposable insulin pump according to a preferred embodiment of the present invention.
  • Figure 3 is an exploded schematic diagram of a disposable insulin pump according to a preferred embodiment of the present invention.
  • Figure 4 is an exploded schematic diagram of some components of the disposable insulin pump according to the preferred embodiment of the present invention.
  • Figure 5 is an exploded schematic diagram of some components of the disposable insulin pump according to the preferred embodiment of the present invention.
  • Figure 6 is an exploded schematic diagram of a disposable insulin pump according to a preferred embodiment of the present invention.
  • Figure 1 is a schematic structural diagram of a disposable insulin pump according to a preferred embodiment of the present invention
  • Figure 2 is a schematic structural diagram of a disposable insulin pump according to a preferred embodiment of the present invention
  • Figure 3 is a schematic structural diagram of a disposable insulin pump according to a preferred embodiment of the present invention.
  • Figure 4 is an exploded schematic view of some components of the disposable insulin pump according to the preferred embodiment of the present invention
  • Figure 5 is an exploded schematic view of some components of the disposable insulin pump according to the preferred embodiment of the present invention
  • Figure 6 is an exploded schematic view of some components of the disposable insulin pump according to the preferred embodiment of the present invention
  • the disposable insulin pump of this embodiment includes an injection component 1 for injecting medicinal liquid into the patient's body, a push screw 2 fixedly connected to the injection component 1, and a push screw 2
  • the detachably connected push component 3 is used to drive the push screw 2 to move axially to push the injection component 1 to inject medicinal liquid into the patient's body.
  • the push component 3 is arranged corresponding to the push component 3 and is used to drive the push component 3 through electromagnetic driving to work.
  • the electromagnetic drive component 4 that drives the push screw 2 to extend axially and the control component 5 that is electrically connected to the electromagnetic drive component 4 for controlling the work of the electromagnetic drive component 4 are driven.
  • the push component 3, the electromagnetic drive component 4 and the control component 5 are integrated. formula structure.
  • the control component 5 is first used to control the operation of the electromagnetic drive component 4, so as to drive the push component 3 to work through electromagnetic drive, and then push the screw rod. 2 Extend the pushing injection component 1 to inject the medical liquid into the patient's body, thereby realizing the medical liquid injection treatment of the patient. After the medical liquid injection is completed, separate the pushing screw 2 and the pushing component 3, and control the component 5 and the electromagnetic drive The more expensive components such as component 4 and push component 3 can be removed together. The patient only needs to spend a small cost to purchase the push screw 2 and injection component 1 and assemble them for normal use. It is economical, environmentally friendly, and conducive to the recycling of resources.
  • the disposable insulin pump includes a first housing 6 and a second housing 7 that is detachably and assembledly connected to the first housing 6 along the axial direction of the pushing screw 2.
  • the injection assembly 1 is arranged in the first housing 6, and the pushing component 3, the electromagnetic driving component 4 and the control component 5 are arranged in the second housing 7.
  • the pushing screw rod 2 and the pushing assembly 3 are detachably connected.
  • the patient can be After the injection is completed, the first housing 6 and the second housing 7 are disassembled along the axial direction of the pushing screw 2 to realize recycling of the second housing 7 .
  • a waterproof rubber ring is arranged between the first housing 6 and the second housing 7 .
  • an application plate for application on the patient's body surface is arranged on the outer end surface of the first housing 6 and/or the second housing 7 .
  • the pushing component 3 includes a mounting housing 31, a ratchet mechanism 32 rotatably arranged on the mounting housing 31, and a ratchet mechanism 32 slidably arranged along the axial direction.
  • the screw sleeve 33 is sleeved on the outside of the push screw 2
  • the locking mechanism 34 is fixedly arranged on the ratchet mechanism 32 for fixing or loosening the screw sleeve 33
  • the screw sleeve 33 is rotatably arranged on the installation housing 31.
  • the swinging member 35 is arranged correspondingly to the ratchet mechanism 32 .
  • the swinging member 35 is arranged correspondingly to the electromagnetic drive assembly 4 .
  • the screw sleeve 33 is threadedly connected to the push screw 2 .
  • the locking mechanism 34 fixes the screw sleeve 33 so that the ratchet mechanism 32 and the screw sleeve 33 are fixedly connected through the locking mechanism 34, and the electromagnetic driving assembly 4 drives the swinging member 35 to swing in an electromagnetic driving manner to drive the ratchet.
  • the mechanism 32 rotates step by step, thereby driving the screw sleeve 33 to rotate synchronously. Since the push screw 2 is fixedly connected to the injection assembly 1, the push screw 2 is circumferentially fixed relative to the screw sleeve 33 and extends axially for push.
  • the injection component 1 injects the medical solution into the patient's body.
  • the locking mechanism 34 loosens the screw sleeve 33, and the screw sleeve 33 can slide out of the ratchet mechanism 32 along the axial direction to remove the pushing assembly 3.
  • the electromagnetic driving assembly 4 includes an electromagnet 41 arranged corresponding to the swinging member 35 for electromagnetically driving the swinging member 35 to swing, and a power supply member electrically connected to the electromagnet 41 and the control assembly 5 respectively. 42.
  • the electromagnet 41 includes two magnetic poles arranged at intervals and pointing in opposite directions.
  • the power supply member 42 is used to change the magnetism and direction of the two magnetic poles at a preset frequency to drive the swing member 35 to reciprocate in the extended area between the two magnetic poles.
  • the electromagnet 41 Specifically, current is transmitted to the electromagnet 41 through the power supply 42, so that the electromagnet 41 generates two magnetic poles that are magnetic and point in opposite directions, thereby attracting and repelling the swinging member 35, so that the swinging member 35 moves closer under the action of the magnetic force.
  • the direction of one of the magnetic poles swings.
  • the power supply component 42 changes the direction of the two magnetic poles by changing the positive and negative poles of the current output, so that the swinging component 35 swings in the direction closer to the other magnetic pole under the action of the magnetic force.
  • the working principle is that the power supply part 42 changes the direction of the two magnetic poles according to a preset frequency, so that the swinging part 35 swings back and forth in the extended area between the two magnetic poles as the direction of the two magnetic poles changes, thereby driving the push screw 2 to extend and push.
  • the use of electromagnetic drive makes the power output more stable, direct, and reliable, which is conducive to accurately controlling the amount of insulin injection to the patient and ensuring the patient's health.
  • the energy conversion efficiency of electromagnetic Electric heating has high energy conversion efficiency and low power consumption. It can be used for a long time with the same power, making it easy for patients to use it for a long time.
  • the preset frequency determines the frequency of the reciprocating swing of the swing member 35, and thus determines the injection speed of the medical solution, which can be adaptively adjusted according to the patient's needs.
  • the preset frequency is 5 milliseconds/time, that is, the current flow direction of the power supply component 42 is changed every 5 milliseconds to change the direction of the two magnetic poles of the electromagnet 41, thereby achieving rapid injection of the medical solution.
  • the shape of the electromagnet 41 is arranged in a "U" shape, and the two magnetic poles are respectively arranged at both ends of the open end of the electromagnet 41 .
  • the electromagnet 41 when the electromagnet 41 is in a stationary state, the magnetic pole pointing north is called the north pole, and the magnetic pole pointing south is called the south pole.
  • the power supply 42 changes the direction of the magnetic poles, which means changing the north pole to the south pole and the south pole to the north pole. .
  • the electromagnet 41 when the power supply member 42 provides current to the electromagnet 41, the electromagnet 41 has magnetism and generates magnetic force that attracts and repels the swing member 35, thereby driving the push screw 2 to extend and push; when the power supply member 42 does not move toward When the electromagnet 41 provides current, the electromagnet 41 stops working, and accordingly, the pushing screw 2 cannot work either.
  • the ratchet mechanism 32 includes a rotating shaft 321 rotatably arranged on the mounting housing 31 , a ratchet wheel 322 fixedly sleeved outside the rotating shaft 321 , and a circumference along the circumference of the ratchet wheel 322 .
  • the rotating shaft 321 Toward the plurality of ratchet teeth arranged in sequence, the rotating shaft 321 has a sliding cavity slidably connected with the screw sleeve 33 along the axial direction.
  • the screw sleeve 33 is inserted into the rotating shaft 321, the locking mechanism 34 locks the screw sleeve 33, and the swinging member 35 pushes against the ratchet to drive the ratchet 322 to rotate step by step.
  • the ratchet 322 drives the rotating shaft 321 to rotate step by step, and then drives the screw sleeve 33 to rotate step by step, thereby achieving the extension and pushing of the screw rod 2 .
  • the locking mechanism 34 includes a locking screw that penetrates the rotating shaft 321 in the radial direction of the rotating shaft 321 and is used to extend into the sliding cavity to press against the fixed screw sleeve 33 .
  • the tightening screw is threadedly connected to the rotating shaft 321.
  • the locking screw rotates relative to the rotating shaft 321 to extend into the sliding cavity along the radial direction of the rotating shaft 321 and press the fixed screw sleeve 33.
  • the rotating shaft 321 can drive the screw sleeve 33 to rotate synchronously, or along the rotational direction.
  • the radial direction of the shaft 321 extends out of the rotating shaft 321 to loosen the screw sleeve 33, and the screw sleeve 33 can slide out of the rotating shaft 321.
  • the outer wall of the screw sleeve 33 is provided with a fixing groove 331 in the radial direction that is plug-fitted with the locking screw.
  • the locking screw rotates relative to the rotating shaft 321 to extend into the sliding cavity along the radial direction of the rotating shaft 321 and be inserted into the fixing groove 331.
  • the rotating shaft 321 can drive the screw sleeve 33 to rotate synchronously.
  • the installation housing 31 includes a connecting column 311 arranged along the height direction of the installation housing 31.
  • the swinging member 35 is rotatably sleeved on the connecting column 311.
  • the swinging member 35 includes a connecting column 311 arranged along the height direction of the mounting housing 31.
  • the extending area between the two magnetic poles and maintaining a preset distance from the electromagnet 41 is a magnetic suction portion 351 for reciprocating swings as the magnetic properties of the two magnetic poles change, and a magnetic suction portion 351 for reciprocating swings to push the ratchet mechanism 32 Step-by-step rotating push portion 352.
  • the electromagnet 41 drives the magnetic part 351 to swing repeatedly, so as to drive the pushing part 352 to swing repeatedly, and then pushes the ratchet mechanism 32 to realize the stepwise rotation of the ratchet mechanism 32, thereby driving the push screw 2 along the axial direction. Extend and push the injection component 1 to complete the injection operation.
  • the magnetic attraction part 351 is made of ferromagnetic material.
  • the magnetic attraction part 351 is an electromagnet.
  • the magnetic attraction portion 351 maintains a preset distance from the electromagnet 41, the magnetic attraction portion 351 of the swing member 35 will not be hindered and interfered by the magnetic pole during the swing process, and the swing range is large, so that the structure covered by the swing portion In order to facilitate streamlined and lightweight design, the self-gravity of the swing part can be ignored for the driving power of the driving part, so that as the posture of the insulin pump is different or the posture changes, the impact on the driving part is small. . It should be understood that the greater the current provided by the power supply component 42, the greater the magnetic force of the two magnetic poles on the electromagnet 41, and the faster the swing speed of the magnetic attraction portion 351 is. It should be understood that the extended area between the two magnetic poles refers to the area where the middle area of the two magnetic poles extends toward the pushing assembly 3 .
  • the end of the mounting housing 31 away from the magnetic part 351 is provided with a plurality of limiting posts 312 arranged along the height direction of the mounting housing 31 .
  • the plurality of limiting posts 312 are arranged along the mounting direction.
  • the housing 31 is spaced apart in the length direction to form a limiting gap.
  • the end of the swinging member 35 away from the magnetic attraction portion 351 is provided with an end extending along the length direction of the swinging member 35 and extending into the limiting gap.
  • the limiting portion 353 contacts the limiting column 312 during the swing process of the swing member 35 to limit the swing range of the swing member 35 . Specifically, during the swing of the swing member 35, the limiting portion 353 swings synchronously.
  • the limiting portion 353 extends into the limiting gap and is abutted and limited by the limiting column 312, it can only swing within the limiting gap.
  • the swing range of the swing member 35 is correspondingly limited, so as to avoid the swing range of the swing member 35 being too large and causing the push portion 352 to break away from the push area of the ratchet teeth, which may then be hindered and interfered by the ratchet teeth and become stuck. This ensures that the swing member 35 The movement is stable and reliable.
  • the side wall of the mounting housing 31 is provided with a plurality of limiting protrusions extending along the width direction of the mounting housing 31 .
  • the plurality of limiting protrusions extend along the width direction of the mounting housing 31 .
  • the swing member 35 is spaced apart in the length direction and forms limit grooves.
  • the swing member 35 also includes limit holes opened along the thickness direction of the swing member 35 and arranged corresponding to the limit grooves and limit blocks arranged in the limit holes.
  • the limit blocks The limiting end extends into the limiting groove and is used to abut the limiting protrusion during the swinging process of the swinging member 35 to limit the swinging range of the swinging member 35 .
  • the limiting block swings synchronously. Since the limiting end of the limiting block extends into the limiting groove and is abutted and limited by the limiting protrusion, it can only move in the limiting groove. Swing, so that the swing range of the swing member 35 is correspondingly limited, to prevent the swing range of the swing member 35 from being too large and causing the push portion 352 to break away from the push area of the ratchet teeth, which may be hindered and interfered by the ratchet teeth and stuck, ensuring that the magnetic The movement of suction parts is stable and reliable.
  • the limiting groove is arranged along the length direction of the installation housing 31, and the length direction of the mounting housing 31 is the same as the swing direction of the magnetic suction part 351, so that the limiting block is slidably arranged in the limiting groove along the swing direction.
  • the limit block slides in the limit groove to appropriately increase the swing range of the swing member 35 to prevent the swing range of the swing member 35 from being too small and causing the push stroke of the push portion 352 to be too small, so that the ratchet 322
  • the rotation speed is too slow, which in turn affects the injection speed of the injection assembly 1.
  • the preset spacing can be adaptively adjusted according to the use requirements of the product, as long as the swing of the magnetic part 351 can be realized.
  • the pushing component 3 includes a mounting shell 31 , a ratchet mechanism 32 rotatably arranged on the mounting shell 31 , fixedly arranged in the ratchet mechanism 32 and sleeved on the pushing screw 2
  • the outer screw sleeve 33 and the swinging member 35 are rotatably arranged on the installation shell 31 and arranged correspondingly with the ratchet mechanism 32.
  • the swinging member 35 is arranged correspondingly with the electromagnetic drive assembly 4.
  • the screw sleeve 33 includes the push screw 2
  • the threaded drive part is threaded for driving the push screw 2 to move axially through the thread structure
  • the sliding part is slidably connected to the push screw 2 for pushing the screw 2 to slide out of the screw sleeve 33 .
  • the electromagnetic driving assembly 4 drives the swinging member 35 to swing in an electromagnetic driving manner to drive the ratchet mechanism 32 to rotate step by step, thereby driving the screw sleeve 33 to rotate synchronously.
  • the push screw 2 Since the pushing screw 2 is fixedly connected to the injection assembly 1, Therefore, the push screw 2 is circumferentially fixed relative to the screw sleeve 33, and the thread drive part drives the screw 2 to move axially through the thread structure to realize the injection of the medicinal solution of the injection assembly 1 until the push screw 2 moves axially to At this time, the corresponding injection of the medicinal liquid is completed.
  • the push screw 2 can slide out of the screw sleeve 33, thereby realizing the removal of the push component 3, the electromagnetic drive component 4 and the control component 5.
  • the injection assembly 1 includes a liquid storage part fixedly connected to the push screw 2 for storing medical solution, and an injection part communicated with the liquid storage part for injecting the medical solution into the patient's body.
  • the screw rod 2 is pushed to push the medicinal liquid in the liquid storage part into the injection part, and then the medicinal liquid is injected into the patient's body through the injection part, thereby realizing the medicinal liquid injection.
  • the injection part includes a needle tube, a rubber tube, and a needle tube control mechanism that drives the needle insertion and withdrawal of the needle tube.
  • the needle of the needle tube is preferably a stainless steel needle to reduce possible bacterial infections.
  • the needle tube is connected to the liquid storage part through a hose, and is The liquid storage part supplies liquid to the needle tube; the rubber tube is sleeved on the outside of the needle tube, and the needle tube can move relative to the rubber tube.
  • the needle tube control mechanism controls the needle of the needle tube to extend out of the rubber tube.
  • the needle control mechanism controls the needle on the needle tube to be retracted into the rubber tube, reducing the patient's pain caused by the long-term presence of the needle in the body.
  • the base plate is provided with an application piece on the side of the patient's body, and a needle hole is provided on the application piece for the needle on the needle tube to pass through to inject medicine into the patient.
  • the needle tube control mechanism includes a mounting frame, a slider assembly, a slope stop assembly and an elastic assembly.
  • the mounting frame is installed inside the housing.
  • the elastic assembly includes screws. The screws are installed at one end of the mounting frame.
  • a torsion spring is installed on the outside of the screws.
  • the outside of the herringbone arm is rotatably connected to the herringbone arm.
  • the two arms of the herringbone arm are rotatably connected. The rotation of the torsion spring can drive the herringbone arm to extend or contract.
  • the herringbone arm includes a first connecting rod that is rotatably connected to the outside of the screw, and a first connecting rod that is rotatably connected to the outside of the screw.
  • the connecting rod is rotatably connected to a second connecting rod.
  • the outer end of the second connecting rod is rotatably connected to the sliding part on the slider assembly.
  • the sliding assembly includes a first slider, a second slider and a slide rail.
  • the outer end of the second connecting rod is rotatably connected to the sliding part.
  • the end of the connecting rod is rotatably connected to the first slide block, and the second connecting rod can drive the first slide block to slide on the slide rail of the slide block assembly.
  • the stopper is divided into two usage states. One is when the slope stopper assembly is pulled outward, the stopper moves from the first slider to the second slider. The two slide blocks are separated. At this time, the torsion spring rotates and resets, and during the reset process, the herringbone arm is driven to extend to push the first slide block and the second slide block to move on the slide rail; the other is when the slope blocker When the block assembly is pressed, the stopper pushes the first slider to reset, so that the contact position between the stopper and the first slider is an inclined surface, which facilitates the reset of the first slider. When the stopper pushes the first slider to fully reset, , the stopper is located between the first slider and the second slider to separate them.
  • the first slide block is provided with a first conductive groove
  • the second slide block is provided with a second conductive groove
  • the second conductive groove is used to accommodate the hose
  • the second slide block is provided with an adapter cavity
  • the hose is provided with a positioning part protruding from the hose, the positioning part is adapted to the adapting cavity, and the needle tube penetrates into the hose through the positioning part.
  • the rubber tube remains in the reserved tube on the patient's skin, and the needle tube is retracted into the housing to avoid complications caused by the needle remaining in the patient's body.
  • the second slider is away from the first slider.
  • the spring thimble pops out and is inserted into the blocking hole to fix the second slider so that the hose will not be
  • the first slider is driven to retract, and the first slider is reset and retracted under the contraction of the herringbone arm.
  • the needle tube is finally retracted into the rubber tube.
  • the first slider is pushed to move the needle through the operation of the button. Just push the tube out.
  • the liquid storage part includes a liquid storage housing and a piston arranged in the liquid storage housing.
  • the end surface of the piston facing the pushing screw rod 2 is recessed with a connecting groove fixedly connected to the pushing screw rod 2 .
  • the pushing screw 2 is fixedly connected through the connecting groove, so that the pushing assembly 3 drives the pushing screw 2 to extend and push, so as to introduce the medicinal liquid in the liquid storage housing into the injection piece.
  • the first end of the push screw 2 is provided with a first external thread that is threadedly connected to the push assembly 3, and the second end of the push screw 2 is provided with a second external thread, the first external thread and the second external thread.
  • the direction of rotation is opposite, and the inner wall of the connecting groove is provided with an internal thread threadedly connected to the second external thread.

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Abstract

一种可抛式胰岛素泵，包括用于向患者体内注射药液的注射组件（1）、与注射组件（1）固定连接的推动丝杆（2）、与推动丝杆（2）可拆卸连接的用于带动推动丝杆（2）轴向移动以推动注射组件（1）向患者体内注射药液的推动组件（3）、与推动组件（3）对应布设的用于通过电磁驱动的方式驱动推动组件（3）工作以带动推动丝杆（2）轴向伸出的电磁驱动组件（4）以及与电磁驱动组件（4）电连接的用于控制电磁驱动组件（4）工作的控制组件（5），推动组件（3）、电磁驱动组件（4）和控制组件（5）为整体式结构。本方案实现对控制组件（5）、电磁驱动组件（4）和推动组件（3）的再次利用，且通过使用电磁驱动的方式提供驱动动力，有利于本装置的小型化，便于使用和携带，同时电生磁的能量转化效率相对于电生热的能量转换效率高，功耗低。

Description

可抛式胰岛素泵 技术领域
本发明涉及医疗设备技术领域，特别地，涉及一种可抛式胰岛素泵。
背景技术
胰岛素泵通过模拟生理的胰岛素分泌模式，以根据不同时间胰岛素生理分泌的特点对患者给予调解，因此，采用胰岛素泵对糖尿病患者进行治疗，是更人性化，更符合生理胰岛素分泌模式的治疗方式。
现有的胰岛素泵，通常具有控制部分、驱动部分、推动部分和注射部分，通过控制部分控制驱动部分工作，以为推动部分提供推动动力，进而控制注射部分向患者体内注射胰岛素，而根据医疗设备的相关规定，在注射部分完成注射作业后，注射部分需要采用合适的处理方式弃置，然而，为了使用过程中的工作稳定和可靠，胰岛素泵采用整体式构造进行设计，这样就导致胰岛素泵拆装麻烦，且由于注射部分通常具有储存药液的储液管以及设置于储液管内的活塞，执行部分采用可步进式转动的丝杆推动活塞移动以实现药液注射，丝杆在注射药液的过程中伸出，但在药液注射完成后收缩复位麻烦，由于以上原因，使得现有的胰岛素泵相当于一次性用品，在使用后就只能弃置，一台胰岛素泵至少也需要四五万，多的甚至上十万，而其成本主要体现在控制部分、驱动部分和执行部分上，多次使用价格昂贵，大大增加了患者的使用成本，长时间使用价格昂贵，不被2型糖尿病患者与妊娠糖尿病患者接受，且多数胰岛素泵中的驱动部分采用电机、编码器、减速箱、导管等部件，导致胰岛素泵体积大，能够选择注射的部位较少，携带不便、隐蔽性差，容易遭到周围异样的目光；若现有的胰岛素泵中的驱动部分采用记忆合金驱动，通过电加热改变记忆合金的温度以控制记忆合金变形进而实现驱动，但电能转化为热能的损耗大，且为了避免常温下记忆合金变形，往往需要选择变形温度较高的记忆合金，导致该驱动方式功耗大，使用成本高。
发明内容
本发明提供了一种可抛式胰岛素泵，以解决胰岛素泵在患者使用后就只能弃置，多次使用价格昂贵，且存在体积大或者功耗大的技术问题。
根据本发明的一个方面，提供一种可抛式胰岛素泵，包括用于向患者体内注射药液的注射组件、与注射组件固定连接的推动丝杆、与推动丝杆可拆卸连接的用于带动推动丝杆轴向移动以推动注射组件向患者体内注射药液的推动组件、与推动组件对应布设的用于通过电磁驱动的方式驱动推动组件工作以带动推动丝杆轴向伸出的电磁驱动组件以及与电磁驱动组件电连接的用于控制电磁驱动组件工作的控制组件，推动组件、电磁驱动组件和控制组件为整 体式结构。
作为上述技术方案的进一步改进：
进一步地，可抛式胰岛素泵包括第一壳体以及沿推动丝杆的轴向与第一壳体可拆卸拼装连接的第二壳体，注射组件布设于第一壳体内，推动组件、电磁驱动组件和控制组件布设于第二壳体内。
进一步地，推动组件包括安装壳体、可转动地布设于安装壳体上的棘轮机构、沿轴向可滑动地布设于棘轮机构内并套设于推动丝杆外的丝杆套、固定布设于棘轮机构上的用于固定或者松开丝杆套的锁紧机构以及可转动地布设于安装壳体上并与棘轮机构对应布设的摆动件，摆动件与电磁驱动组件对应布设，丝杆套和推动丝杆螺纹连接。
进一步地，电磁驱动组件包括与摆动件对应布设的用于电磁驱动摆动件摆动的电磁体以及分别与电磁体和控制组件电连接的供电件，电磁体包括间隔布设且指向相反的两磁极，供电件用于按预设频率改变两磁极的磁性和指向以带动摆动件在两磁极之间的延伸区域往复摆动。
进一步地，安装壳体包括沿安装壳体的高度方向布设的连接柱，摆动件可转动地套设于连接柱上，摆动件包括布设于两磁极之间的延伸区域且与电磁体保持预设间距的用于随两磁极磁性的改变而往复摆动的磁吸部以及用于随磁吸部的往复摆动而抵推棘轮机构步进式转动的抵推部。
进一步地，安装壳体远离磁吸部的端部设有沿安装壳体的高度方向布设的多个限位柱，多个限位柱沿安装壳体的长度方向间隔布设并形成限位间隙，摆动件上远离磁吸部的端部设有沿摆动件的长度方向延伸形成并伸入限位间隙内的用于在摆动件摆动过程中与限位柱抵接以限制摆动件的摆动范围的限位部。
进一步地，棘轮机构包括可转动地布设于安装壳体上的转动轴、固定套设于转动轴外的棘轮以及沿棘轮的周向依次排布的多个棘齿，转动轴沿轴向开设有与丝杆套滑动连接的滑动腔。
进一步地，锁紧机构包括沿转动轴径向穿设于转动轴的用于伸入滑动腔内以抵压固定丝杆套的锁紧螺杆，锁紧螺杆与转动轴螺纹连接。
进一步地，丝杆套的外壁上沿径向开设有与锁紧螺杆插接配合的固定槽。
进一步地，推动组件包括安装壳体、可转动地布设于安装壳体上的棘轮机构、固定布设于棘轮机构内并套设于推动丝杆外的丝杆套以及可转动地布设于安装壳体上并与棘轮机构对应布设的摆动件，摆动件与电磁驱动组件对应布设，丝杆套包括与推动丝杆螺纹连接的用于通过螺纹结构驱动推动丝杆轴向移动的螺纹驱动部以及与推动丝杆滑动连接的用于推动丝杆滑出丝杆套外的滑动部。
本发明具有以下有益效果：
本发明的可抛式胰岛素泵，需要向患者体内注射药液时，首先通过控制组件控制电磁驱 动组件工作，以通过电磁驱动的方式驱动推动组件工作，进而使推动丝杆伸出抵推注射组件以向患者体内注射药液，从而实现对患者的药液注射治疗，在药液注射完成后，将推动丝杆和推动组件分开，控制组件、电磁驱动组件和推动组件等比较昂贵的部件可一并卸下，患者仅需要花费很少的成本购买推动丝杆和注射组件进行组装即可正常使用，经济环保，有利于资源的回收利用，使用过后的推动丝杆和注射组件采用合适的处理方式抛弃，本方案通过推动丝杆和推动组件可拆卸的连接，实现对控制组件、电磁驱动组件和推动组件的再次利用，且通过使用电磁驱动的方式提供驱动动力，相对于现有的驱动部件，不再需要使用电机、减速器等驱动装置，有利于本装置的小型化，便于使用和携带，且电磁驱动使得动力输出更加稳定、直接、可靠，有利于精确控制对患者的胰岛素注入量，保证患者的身体健康，同时电生磁的能量转化效率相对于电生热的能量转换效率高，功耗低，在同样电力的情况下使用时间长，便于患者长时间使用。
除了上面所描述的目的、特征和优点之外，本发明还有其它的目的、特征和优点。下面将参照图，对本发明作进一步详细的说明。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是本发明优选实施例的可抛式胰岛素泵的结构示意图；
图2是本发明优选实施例的可抛式胰岛素泵的结构示意图；
图3是本发明优选实施例的可抛式胰岛素泵的分解示意图；
图4是本发明优选实施例的可抛式胰岛素泵中部分组件的分解示意图；
图5是本发明优选实施例的可抛式胰岛素泵中部分组件的分解示意图；
图6是本发明优选实施例的可抛式胰岛素泵的分解示意图。
图例说明：
1、注射组件；2、推动丝杆；3、推动组件；31、安装壳体；311、连接柱；312、限位柱；32、棘轮机构；321、转动轴；322、棘轮；33、丝杆套；331、固定槽；34、锁紧机构；35、摆动件；351、磁吸部；352、抵推部；353、限位部；4、电磁驱动组件；41、电磁体；42、供电件；5、控制组件；6、第一壳体；7、第二壳体。
具体实施方式
以下结合附图对本发明的实施例进行详细说明，但是本发明可以由下述所限定和覆盖的多种不同方式实施。
图1是本发明优选实施例的可抛式胰岛素泵的结构示意图；图2是本发明优选实施例的 可抛式胰岛素泵的结构示意图；图3是本发明优选实施例的可抛式胰岛素泵的分解示意图；图4是本发明优选实施例的可抛式胰岛素泵中部分组件的分解示意图；图5是本发明优选实施例的可抛式胰岛素泵中部分组件的分解示意图；图6是本发明优选实施例的可抛式胰岛素泵的分解示意图。
如图1-图3所示，本实施例的可抛式胰岛素泵，包括用于向患者体内注射药液的注射组件1、与注射组件1固定连接的推动丝杆2、与推动丝杆2可拆卸连接的用于带动推动丝杆2轴向移动以推动注射组件1向患者体内注射药液的推动组件3、与推动组件3对应布设的用于通过电磁驱动的方式驱动推动组件3工作以带动推动丝杆2轴向伸出的电磁驱动组件4以及与电磁驱动组件4电连接的用于控制电磁驱动组件4工作的控制组件5，推动组件3、电磁驱动组件4和控制组件5为整体式结构。具体地，本发明的可抛式胰岛素泵，需要向患者体内注射药液时，首先通过控制组件5控制电磁驱动组件4工作，以通过电磁驱动的方式驱动推动组件3工作，进而使推动丝杆2伸出抵推注射组件1以向患者体内注射药液，从而实现对患者的药液注射治疗，在药液注射完成后，将推动丝杆2和推动组件3分开，控制组件5、电磁驱动组件4和推动组件3等比较昂贵的部件可一并卸下，患者仅需要花费很少的成本购买推动丝杆2和注射组件1进行组装即可正常使用，经济环保，有利于资源的回收利用，使用过后的推动丝杆2和注射组件1采用合适的处理方式抛弃，本方案通过推动丝杆2和推动组件3可拆卸的连接，实现对控制组件5、电磁驱动组件4和推动组件3的再次利用，且通过使用电磁驱动的方式提供驱动动力，相对于现有的驱动部件，不再需要使用电机、减速器等驱动装置，有利于本装置的小型化，便于使用和携带，且电磁驱动使得动力输出更加稳定、直接、可靠，有利于精确控制对患者的胰岛素注入量，保证患者的身体健康，同时电生磁的能量转化效率相对于电生热的能量转换效率高，功耗低，在同样电力的情况下使用时间长，便于患者长时间使用。
如图1所示，本实施例中，可抛式胰岛素泵包括第一壳体6以及沿推动丝杆2的轴向与第一壳体6可拆卸拼装连接的第二壳体7，注射组件1布设于第一壳体6内，推动组件3、电磁驱动组件4和控制组件5布设于第二壳体7内。具体地，通过将第二壳体7沿推动丝杆2的轴向拼装于第一壳体6上，以使推动丝杆2与推动组件3可拆卸连接，在拼装完成后，即可向患者体内注射药液，在注射完成后，沿推动丝杆2的轴向拆分第一壳体6和第二壳体7，实现对第二壳体7的回收利用。可选地，第一壳体6和第二壳体7之间布设有防水胶圈。可选地，第一壳体6和/或第二壳体7的外端面布设有用于贴敷于患者体表的贴敷板。
如图4-图5所示，本实施例中，推动组件3包括安装壳体31、可转动地布设于安装壳体31上的棘轮机构32、沿轴向可滑动地布设于棘轮机构32内并套设于推动丝杆2外的丝杆套33、固定布设于棘轮机构32上的用于固定或者松开丝杆套33的锁紧机构34以及可转动地布设于安装壳体31上并与棘轮机构32对应布设的摆动件35，摆动件35与电磁驱动组件4对应布设，丝杆套33和推动丝杆2螺纹连接。具体地，锁紧机构34固定丝杆套33，以使棘轮机构32和丝杆套33通过锁紧机构34固定连接，通过电磁驱动组件4以电磁驱动的方式驱动摆动件35摆动，以带动棘轮机构32步进式转动，进而带动丝杆套33同步转动，由于推动丝杆2与注射组件1固定连接，因此，推动丝杆2相对于丝杆套33周向固定不同而轴向伸出推动注射组件1向患者体内注射药液，在药液注射完成后，锁紧机构34松开丝杆套33，丝杆套 33可沿轴向滑出棘轮机构32外，实现卸下推动组件3、电磁驱动组件4和控制组件5。
如图3所示，本实施例中，电磁驱动组件4包括与摆动件35对应布设的用于电磁驱动摆动件35摆动的电磁体41以及分别与电磁体41和控制组件5电连接的供电件42，电磁体41包括间隔布设且指向相反的两磁极，供电件42用于按预设频率改变两磁极的磁性和指向以带动摆动件35在两磁极之间的延伸区域往复摆动。具体地，通过供电件42向电磁体41传输电流，以使电磁体41产生具备磁性且指向相反的两磁极，进而一吸引一排斥摆动件35，以使摆动件35在磁力的作用下朝靠近其中一磁极的方向摆动，此时，供电件42通过改变电流输出的正负极，进而改变两磁极的指向，从而使摆动件35在磁力的作用下朝靠近另一磁极的方向摆动，基于上述工作原理，供电件42按预设频率改变两磁极的指向，以使摆动件35随两磁极指向的改变而在两磁极之间的延伸区域往复摆动，进而带动推动丝杆2伸出抵推，从而驱动注射组件1注射药液，通过采用电磁驱动使得动力输出更加稳定、直接、可靠，有利于精确控制对患者的胰岛素注入量，保证患者的身体健康，同时电生磁的能量转化效率相对于电生热的能量转换效率高，功耗低，在同样电力的情况下使用时间长，便于患者长时间使用。应当理解的是，预设频率决定了摆动件35往复摆动的频率，进而决定了药液的注射速度，即可根据患者的使用需求自适应调节。可选地，预设频率为5毫秒/次，即每经过5毫秒改变一次供电件42的电流流向，以改变电磁体41两磁极的指向，进而实现快速注射药液。可选地，电磁体41的形状呈“U”形布设，两磁极分别布设于电磁体41开口端的两端部。应当理解的是，当电磁体41静止状态时，指向北方的磁极叫做北极，指向南方的磁极叫做南极，而供电件42改变磁极的指向，指的是将北极变为南极，将南极变为北极。应当理解的是，当供电件42向电磁体41提供电流时，电磁体41具备磁性并产生吸引和排斥摆动件35的磁力，进而驱使推动丝杆2伸出抵推；当供电件42不向电磁体41提供电流时，电磁体41停止工作，相应地，推动丝杆2也无法工作。
如图4和图5所示，本实施例中，棘轮机构32包括可转动地布设于安装壳体31上的转动轴321、固定套设于转动轴321外的棘轮322以及沿棘轮322的周向依次排布的多个棘齿，转动轴321沿轴向开设有与丝杆套33滑动连接的滑动腔。具体地，当需要向患者体内注射药液时，丝杆套33插入转动轴321内，锁紧机构34锁紧丝杆套33，通过摆动件35抵推棘齿以带动棘轮322步进式转动，此时，棘轮322带动转动轴321步进式转动，进而带动丝杆套33步进式转动，从而实现推动丝杆2的伸出抵推。
如图3所示，本实施例中，锁紧机构34包括沿转动轴321径向穿设于转动轴321的用于伸入滑动腔内以抵压固定丝杆套33的锁紧螺杆，锁紧螺杆与转动轴321螺纹连接。具体地，锁紧螺杆相对于转动轴321转动，以沿转动轴321的径向伸入滑动腔内而抵压固定丝杆套33，转动轴321可带动丝杆套33同步转动，或者沿转动轴321的径向伸出转动轴321外而松开丝杆套33，丝杆套33可滑出转动轴321外。
如图3所示，本实施例中，丝杆套33的外壁上沿径向开设有与锁紧螺杆插接配合的固定槽331。具体地，锁紧螺杆相对于转动轴321转动，以沿转动轴321的径向伸入滑动腔并插入固定槽331内，转动轴321可带动丝杆套33同步转动。
如图4所示，本实施例中，安装壳体31包括沿安装壳体31的高度方向布设的连接柱311， 摆动件35可转动地套设于连接柱311上，摆动件35包括布设于两磁极之间的延伸区域且与电磁体41保持预设间距的用于随两磁极磁性的改变而往复摆动的磁吸部351以及用于随磁吸部351的往复摆动而抵推棘轮机构32步进式转动的抵推部352。具体地，通过电磁体41带动磁吸部351反复摆动，以带动抵推部352反复摆动，进而抵推棘轮机构32，实现棘轮机构32的步进式转动，从而带动推动丝杆2沿轴向伸出推动注射组件1，完成注射作业。可选地，磁吸部351采用铁磁性材料制成。可选地，磁吸部351为电磁铁。应当理解的是，由于磁吸部351与电磁体41保持预设间距，摆动件35的磁吸部351摆动过程中不会受到磁极的阻碍和干涉，摆动范围大，以使摆动部分涵盖的结构少，以便于进行精简以及轻量化设计，其摆动部分的自身重力对于驱动件的驱动动力可以忽略不记，使得随着胰岛素泵使用时的姿态的不同、或者姿态改变，对于驱动件的影响小。应当理解的是，供电件42提供的电流越大，电磁体41上两磁极的磁力越大，磁吸部351的摆动速度越快。应当理解的是，两磁极之间的延伸区域指的是，两磁极的中间区域朝推动组件3延伸的区域。
如图4所示，本实施例中，安装壳体31远离磁吸部351的端部设有沿安装壳体31的高度方向布设的多个限位柱312，多个限位柱312沿安装壳体31的长度方向间隔布设并形成限位间隙，摆动件35上远离磁吸部351的端部设有沿摆动件35的长度方向延伸形成并伸入限位间隙内的用于在摆动件35摆动过程中与限位柱312抵接以限制摆动件35的摆动范围的限位部353。具体地，摆动件35摆动过程中，限位部353同步摆动，由于限位部353伸入限位间隙内而受到限位柱312的抵接限位，而只能在限位间隙内摆动，使得摆动件35的摆动范围相应受到限制，避免摆动件35的摆动范围过大而使得抵推部352脱离棘齿的抵推区域，进而可能受到棘齿的阻碍干涉而卡死，保证摆动件35运动的稳定可靠。
如图4所示，本实施例中，安装壳体31的侧壁上设有沿安装壳体31的宽度方向延伸形成的多个限位凸起，多个限位凸起沿安装壳体31的长度方向间隔布设并形成限位槽，摆动件35还包括沿摆动件35的厚度方向开设并与限位槽对应布设的限位孔以及布设于限位孔内的限位块，限位块的限位端伸入限位槽内用于在摆动件35摆动过程中与限位凸起抵接以限制摆动件35的摆动范围。具体地，摆动件35摆动过程中，限位块同步摆动，由于限位块的限位端伸入限位槽内而受到限位凸起的抵接限位，而只能在限位槽内摆动，使得摆动件35的摆动范围相应受到限制，避免摆动件35的摆动范围过大而使得抵推部352脱离棘齿的抵推区域，进而可能受到棘齿的阻碍干涉而卡死，保证磁吸件运动的稳定可靠。可选地，限位槽沿安装壳体31的长度方向布设，安装壳体31的长度方向与磁吸部351的摆动方向相同，以使限位块沿摆动方向可滑动地布设于限位槽内，通过限位块在限位槽内滑动，以适当的增加摆动件35的摆动范围，避免摆动件35的摆动范围过小而使得抵推部352的抵推行程过小，以使棘轮322的转动速度过慢，进而影响注射组件1的注射速度。应当理解的是，预设间距可根据产品的使用需求自适应调节，能实现磁吸部351的摆动即可。
如图6所示，本实施例中，推动组件3包括安装壳体31、可转动地布设于安装壳体31上的棘轮机构32、固定布设于棘轮机构32内并套设于推动丝杆2外的丝杆套33以及可转动地布设于安装壳体31上并与棘轮机构32对应布设的摆动件35，摆动件35与电磁驱动组件4对应布设，丝杆套33包括与推动丝杆2螺纹连接的用于通过螺纹结构驱动推动丝杆2轴向移动的螺纹驱动部以及与推动丝杆2滑动连接的用于推动丝杆2滑出丝杆套33外的滑动部。具体 地，通过电磁驱动组件4以电磁驱动的方式驱动摆动件35摆动，以带动棘轮机构32步进式转动，进而带动丝杆套33同步转动，由于推动丝杆2与注射组件1固定连接，因此，推动丝杆2相对于丝杆套33周向固定不同，螺纹驱动部通过螺纹结构驱动推动丝杆2轴向移动，实现注射组件1的药液注射，直至推动丝杆2轴向移动至滑动部，此时药液相应注射完毕，通过滑动部使得推动丝杆2可滑出丝杆套33外，实现卸下推动组件3、电磁驱动组件4和控制组件5。
本实施例中，注射组件1包括与推动丝杆2固定连接的用于储存药液的储液件以及与储液件连通的用于将药液注入患者体内的注射件。具体地，推动丝杆2将储液件的药液推送至注射件内，再通过注射件将药液注射至患者体内，实现药液注射。可选地，注射件包括针管、胶管以及驱动针管的针头植入与拔出的针管控制机构，针管的针头优选为不锈钢针头，减少可能导致的细菌感染，针管通过软管连接储液件，由储液件为针管供液；胶管套设于针管的外侧，针管能够与胶管之间发生相对运动，在需要对患者进行注射时，针管控制机构控制针管的针头伸出胶管之外，完成注射后，针管控制机构控制针管上的针头重新收入胶管之内，减少患者因针头长期存于体内产生的痛苦。可选地，底板贴向患者身体一侧设有贴敷片，贴敷片上开设有针孔可供针管上的针头穿过对患者实施药物注射，通过该种贴敷的方式取代了长导管的使用，避免了使用长导管时导管与用户身体摩擦、长导管可能挂在其他物体上等导致患者发生不适的现象发生。可选地，针管控制机构包括安装架、滑块组件、斜面挡块组件和弹性组件，安装架设于外壳之内，弹性组件包括螺钉，安装架的一端安装有螺钉，螺钉外侧套装扭簧，螺钉的外侧转动连接有人字臂，人字臂的两臂之间转动连接，扭簧的转动可驱动人字臂伸展或收缩，人字臂包括转动连接在螺钉外侧的第一连杆、与第一连杆转动连接的第二连杆，第二连杆的外端与滑块组件上的滑动部转动连接，滑动组件包括第一滑块、第二滑块以及滑轨，第二连杆的外端与第一滑块转动相连，第二连杆可驱动第一滑块在滑块组件的滑轨上进行滑动，外壳中穿过有斜面挡块组件，斜面挡块组件位于外壳内部的一端连有挡块，挡块位于第一滑块与第二滑块之间，挡块分为两种使用状态，一种是当斜面挡块组件向外拉动时，挡块从第一滑块与第二滑块之间抽离，此时扭簧转动复位且其复位的过程中驱动人字臂伸展从而推动第一滑块、第二滑块在滑轨上进行移动；另一种是当斜面挡块组件按下时，挡块推动第一滑块复位，可使得挡块与第一滑块接触的位置为斜面配合，便于第一滑块的复位，当挡块推动第一滑块完全复位时，挡块位于第一滑块与第二滑块之间将两者分隔开，此时扭簧被扭转，且扭簧有着复位推动第一滑块运动的趋势，为下一次推动第一滑块蓄力；第一滑块上设有第一导通槽，第二滑块上设有第二导通槽，第二导通槽用于容纳胶管，第二滑块上设有适配腔，胶管上设有突出于胶管的定位部，定位部适配于适配腔内，针管通过该定位部穿入胶管内。优选地，在注射完成后，胶管留存于患者皮肤上的预留管内，而针管收回到外壳内，以避免针头留在患者体内导致的并发症问题，具体地，第二滑块远离第一滑块的一端开设有阻挡孔，前盖上对应设有一弹簧顶针，第二滑块滑动至一定位置后，弹簧顶针弹出并插入阻挡孔内，将第二滑块固定住，从而使得胶管不会被带动缩回，而第一滑块在人字臂的收缩作用下复位缩回，针管最终收回至胶管内，在进行下次注射时，通过按钮件的操作，再推动第一滑块运动将针头管推出即可。
本实施例中，储液件包括储液壳体以及布设于储液壳体内的活塞，活塞朝向推动丝杆2的端面凹设有与推动丝杆2固定连接的连接槽。具体地，通过连接槽固定连接推动丝杆2，以 在推动组件3带动推动丝杆2伸出抵推，以将储液壳体内的药液导入注射件内。可选地，推动丝杆2的第一端设有与推动组件3螺纹连接的第一外螺纹，推动丝杆2的第二端设有第二外螺纹，第一外螺纹和第二外螺纹的旋向相反，连接槽的内壁设有与第二外螺纹螺纹连接的内螺纹。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种可抛式胰岛素泵，其特征在于，包括用于向患者体内注射药液的注射组件(1)、与注射组件(1)固定连接的推动丝杆(2)、与推动丝杆(2)可拆卸连接的用于带动推动丝杆(2)轴向移动以推动注射组件(1)向患者体内注射药液的推动组件(3)、与推动组件(3)对应布设的用于通过电磁驱动的方式驱动推动组件(3)工作以带动推动丝杆(2)轴向伸出的电磁驱动组件(4)以及与电磁驱动组件(4)电连接的用于控制电磁驱动组件(4)工作的控制组件(5)，推动组件(3)、电磁驱动组件(4)和控制组件(5)为整体式结构。
  2. 根据权利要求1所述的可抛式胰岛素泵，其特征在于，可抛式胰岛素泵包括第一壳体(6)以及沿推动丝杆(2)的轴向与第一壳体(6)可拆卸拼装连接的第二壳体(7)，注射组件(1)布设于第一壳体(6)内，推动组件(3)、电磁驱动组件(4)和控制组件(5)布设于第二壳体(7)内。
  3. 根据权利要求1所述的可抛式胰岛素泵，其特征在于，推动组件(3)包括安装壳体(31)、可转动地布设于安装壳体(31)上的棘轮机构(32)、沿轴向可滑动地布设于棘轮机构(32)内并套设于推动丝杆(2)外的丝杆套(33)、固定布设于棘轮机构(32)上的用于固定或者松开丝杆套(33)的锁紧机构(34)以及可转动地布设于安装壳体(31)上并与棘轮机构(32)对应布设的摆动件(35)，摆动件(35)与电磁驱动组件(4)对应布设，丝杆套(33)和推动丝杆(2)螺纹连接。
  4. 根据权利要求3所述的可抛式胰岛素泵，其特征在于，电磁驱动组件(4)包括与摆动件(35)对应布设的用于电磁驱动摆动件(35)摆动的电磁体(41)以及分别与电磁体(41)和控制组件(5)电连接的供电件(42)，电磁体(41)包括间隔布设且指向相反的两磁极，供电件(42)用于按预设频率改变两磁极的磁性和指向以带动摆动件(35)在两磁极之间的延伸区域往复摆动。
  5. 根据权利要求4所述的可抛式胰岛素泵，其特征在于，安装壳体(31)包括沿安装壳体(31)的高度方向布设的连接柱(311)，摆动件(35)可转动地套设于连接柱(311)上，摆动件(35)包括布设于两磁极之间的延伸区域且与电磁体(41)保持预设间距的用于随两磁极磁性的改变而往复摆动的磁吸部(351)以及用于随磁吸部(351)的往复摆动而抵推棘轮机构(32)步进式转动的抵推部(352)。
  6. 根据权利要求5所述的可抛式胰岛素泵，其特征在于，安装壳体(31)远离磁吸部(351)的端部设有沿安装壳体(31)的高度方向布设的多个限位柱(312)，多个限位柱(312)沿安装壳体(31)的长度方向间隔布设并形成限位间隙，摆动件(35)上远离磁吸部(351)的端部设有沿摆动件(35)的长度方向延伸形成并伸入限位间隙内的用于在摆动件(35)摆动过程中与限位柱(312)抵接以限制摆动件(35)的摆动范围的限位部(353)。
  7. 根据权利要求3所述的可抛式胰岛素泵，其特征在于，棘轮机构(32)包括可转动地布设于安装壳体(31)上的转动轴(321)、固定套设于转动轴(321)外的棘轮(322)以及沿棘轮(322)的周向依次排布的多个棘齿，转动轴(321)沿轴向开设有与丝杆套(33)滑动连接的滑动腔。
  8. 根据权利要求7所述的可抛式胰岛素泵，其特征在于，锁紧机构(34)包括沿转动轴(321)径向穿设于转动轴(321)的用于伸入滑动腔内以抵压固定丝杆套(33)的锁紧螺杆，锁紧螺杆与转动轴(321)螺纹连接。
  9. 根据权利要求8所述的可抛式胰岛素泵，其特征在于，丝杆套(33)的外壁上沿径向开设有与锁紧螺杆插接配合的固定槽(331)。
  10. 根据权利要求1所述的可抛式胰岛素泵，其特征在于，推动组件(3)包括安装壳体(31)、可转动地布设于安装壳体(31)上的棘轮机构(32)、固定布设于棘轮机构(32)内并套设于推动丝杆(2)外的丝杆套(33)以及可转动地布设于安装壳体(31)上并与棘轮机构(32)对应布设的摆动件(35)，摆动件(35)与电磁驱动组件(4)对应布设，丝杆套(33)包括与推动丝杆(2)螺纹连接的用于通过螺纹结构驱动推动丝杆(2)轴向移动的螺纹驱动部以及与推动丝杆(2)滑动连接的用于推动丝杆(2)滑出丝杆套(33)外的滑动部。
PCT/CN2022/111045 2022-07-14 2022-08-09 可抛式胰岛素泵 WO2024011694A1 (zh)

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