CN219001466U - Electromagnetic drive assembly and insulin pump - Google Patents

Abstract

The utility model discloses an electromagnetic driving assembly, which realizes the work of an electromagnetic driving insulin pump through an electromagnet, a power supply piece, a magnetic attraction piece and an execution piece, compared with the prior art, the electromagnetic driving assembly does not need driving devices such as a motor, a speed reducer and the like, reduces the manufacturing cost, has small noise, small volume and convenient use and carrying compared with the driving of the motor because the execution piece works in an electromagnetic driving way, and is convenient for popularization to diabetics and gestational diabetics; the electromagnetic drive makes the power output more stable, direct and reliable, is favorable for accurately controlling the insulin injection amount of a patient, ensures the physical health of the patient, and has the advantages of high energy conversion efficiency of electricity generation magnetism relative to that of electricity generation, low power consumption, long service time under the condition of the same electric power and convenient long-time use of the patient. In addition, the utility model also discloses an insulin pump comprising the electromagnetic driving assembly.

Description

Electromagnetic drive assembly and insulin pump

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an electromagnetic driving assembly. In addition, the utility model also relates to an insulin pump comprising the electromagnetic driving assembly.

Background

The insulin pump can simulate the physiological insulin secretion mode so as to regulate the patient according to the characteristics of physiological insulin secretion at different times, so that the insulin pump is more humanized and more accords with the treatment of the physiological insulin secretion mode.

However, the driving part of the existing insulin pump is usually composed of a motor, an encoder, a reduction gearbox, a catheter and the like, so that the insulin pump is large in size, few in injection parts can be selected, inconvenient to carry and poor in concealment due to the large size and the long catheter, and is easy to suffer from surrounding abnormal eyes, meanwhile, noise is often brought in the working process of the motor, and discomfort of a patient can be influenced after long-time use; therefore, the driving part in the existing insulin pump can sometimes be driven by adopting a memory alloy, the temperature of the memory alloy is changed through electric heating to control the deformation of the memory alloy so as to realize driving, but the loss of converting electric energy into heat energy is large, in order to avoid the deformation of the memory alloy at normal temperature, the memory alloy with higher deformation temperature is often required to be selected, so that the driving mode has large power consumption and high use cost; meanwhile, due to the fact that insulin is formed, the manufacturing cost is high, the price is high, the insulin is difficult to accept by common people, due to the fact that the price is high, people who use insulin are mainly concentrated on people with type 1 diabetes, and type 2 diabetes and gestational diabetes basically refuses to use insulin.

Disclosure of Invention

The utility model provides an electromagnetic driving assembly and an insulin pump, which are used for solving the technical problems of noise or high power consumption existing in the prior insulin pump when a driving part works.

According to one aspect of the present utility model, there is provided an electromagnetic drive assembly for use in an insulin pump to drive an injection assembly to inject a medical fluid, comprising: an electromagnet comprising two magnetic poles which are distributed at intervals and are opposite in direction; the power supply piece is electrically connected with the electromagnet and is used for changing magnetism and direction of the two magnetic poles according to preset frequency; the magnetic attraction piece is oppositely arranged with the electromagnet and comprises a magnetic attraction part which is positioned in an extension area between the two magnetic poles and keeps a preset distance with the electromagnet, and the magnetic attraction part is used for reciprocating swing along with the change of the direction of the two magnetic poles; and the execution piece is connected with the magnetic attraction piece and is used for driving an injection assembly in the insulin pump to inject the liquid medicine along with the swing of the magnetic attraction part.

As a further improvement of the above technical scheme:

further, the executing piece comprises a supporting shell connected with the magnetic attraction piece, a ratchet mechanism which is rotatably arranged on the supporting shell and used for circumferentially rotating along with the reciprocating swing of the magnetic attraction part, and a screw rod mechanism which is arranged in the ratchet mechanism and used for pushing the injection assembly to inject the liquid medicine along with the circumferential rotation of the ratchet mechanism.

Further, the screw rod mechanism comprises a connecting screw rod for connecting the injection assembly and a screw rod sleeve which is arranged in the ratchet mechanism and sleeved outside the connecting screw rod, and the connecting screw rod is in threaded connection with the screw rod sleeve.

Further, the ratchet mechanism comprises a rotating shaft which is rotatably arranged on the support shell and fixedly sleeved outside the screw rod sleeve, a ratchet wheel fixedly sleeved outside the rotating shaft and a plurality of ratchets which are sequentially arranged along the circumferential direction of the ratchet wheel.

Further, the support shell comprises a connecting column which is arranged along the height direction of the support shell, the magnetic attraction piece is rotatably sleeved on the connecting column, and the magnetic attraction piece comprises a pushing part which is arranged corresponding to the ratchet wheel and is used for pushing the ratchet wheel to move in a stepping mode along the tangential direction of the ratchet wheel along with the reciprocating swing of the magnetic attraction part, so that the ratchet wheel is driven to rotate in a stepping mode.

Further, be equipped with on the lateral wall of supporting the casing and extend the spacing arch that forms along the width direction of supporting the casing, a plurality of spacing archs are laid along the length direction interval of supporting the casing and are enclosed and form the spacing groove, and the magnetism is inhaled a still including along the magnetism and inhale the thickness direction of a and correspond spacing hole of laying and lay in spacing downthehole stopper with the spacing groove, the spacing end of stopper stretch into the spacing inslot and be used for inhaling a swing scope with spacing protruding butt in order to restrict magnetism at magnetism in the swing of a in-process.

Further, the end part of the support shell, which is far away from the magnetic attraction part, is provided with a limit post which is arranged along the height direction of the support shell, a plurality of limit posts are arranged at intervals along the length direction of the support shell to form a limit gap, and the end part of the magnetic attraction part, which is far away from the magnetic attraction part, is provided with a limit part which extends along the length direction of the magnetic attraction part to form and stretches into the limit gap and is used for being abutted with the limit post to limit the swing range of the magnetic attraction part in the swing process of the magnetic attraction part.

Further, a plurality of ratchet wheels are arranged along the axial direction of the rotating shaft, and the pushing parts are arranged in one-to-one correspondence with the ratchet wheels.

Further, the magnetic attraction piece further comprises an elastic piece sleeved on the connecting column and used for propping the magnetic attraction piece.

According to another aspect of the present utility model there is also provided an insulin pump comprising the electromagnetic drive assembly described above.

The utility model has the following beneficial effects:

according to the electromagnetic driving assembly, the power supply piece transmits current to the electromagnet so that the electromagnet generates two magnetic poles which are magnetic and have opposite directions, and then the repulsive magnetic attraction piece is attracted, so that the magnetic attraction part of the magnetic attraction piece swings towards the direction close to one magnetic pole under the action of magnetic force; the scheme realizes the electromagnetic driving insulin pump work through the electromagnet, the power supply piece, the magnetic attraction piece and the execution piece, compared with the prior art, the electromagnetic driving insulin pump work has the advantages that a motor, a speed reducer and other driving devices are not needed, the manufacturing cost is reduced, the execution piece works through the electromagnetic driving, the electromagnetic driving noise is small compared with the motor driving, the volume is small, the use and the carrying are convenient, and the electromagnetic driving insulin pump is convenient to popularize for diabetics and gestational diabetics; the electromagnetic drive makes the power output more stable, direct and reliable, is favorable for accurately controlling the insulin injection amount of a patient, ensures the physical health of the patient, and has the advantages of high energy conversion efficiency of electricity generation magnetism relative to that of electricity generation, low power consumption, long service time under the condition of the same electric power and convenient long-time use of the patient.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic structural view of an electromagnetic drive assembly of a preferred embodiment of the present utility model;

FIG. 2 is a schematic structural view of an electromagnetic drive assembly of a preferred embodiment of the present utility model;

FIG. 3 is an exploded view of the electromagnetic drive assembly of FIG. 2;

FIG. 4 is an exploded view of the electromagnetic drive assembly of FIG. 2;

fig. 5 is an exploded view of a portion of the structure of the electromagnetic drive assembly of fig. 2.

Legend description:

1. an electromagnet; 11. a magnetic pole; 2. a power supply member; 3. a magnetic attraction piece; 31. a magnetic attraction part; 32. a pushing part; 33. a limiting hole; 34. a limiting block; 35. a limit part; 36. an elastic member; 4. an actuator; 41. a support housing; 411. a connecting column; 412. a limit protrusion; 413. a limit column; 42. a ratchet mechanism; 421. a rotating shaft; 422. a ratchet wheel; 43. a screw rod mechanism; 431. connecting a screw rod; 432. a screw sleeve.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.

FIG. 1 is a schematic structural view of an electromagnetic drive assembly of a preferred embodiment of the present utility model; FIG. 2 is a schematic structural view of an electromagnetic drive assembly of a preferred embodiment of the present utility model; FIG. 3 is an exploded view of the electromagnetic drive assembly of FIG. 2; FIG. 4 is an exploded view of the electromagnetic drive assembly of FIG. 2; fig. 5 is an exploded view of a portion of the structure of the electromagnetic drive assembly of fig. 2.

As shown in fig. 1 and 2, the electromagnetic driving assembly of the present embodiment is used in an insulin pump to drive an injection assembly to inject a medical fluid, and includes: the electromagnet 1 comprises two magnetic poles 11 which are distributed at intervals and are opposite in direction, and the two magnetic poles 11 are oppositely distributed; the power supply piece 2 is electrically connected with the electromagnet 1 and is used for changing magnetism and direction of the two magnetic poles 11 according to preset frequency; the magnetic attraction piece 3 is arranged opposite to the electromagnet 1, the magnetic attraction piece 3 comprises a magnetic attraction part 31 which is positioned in an extension area between the two magnetic poles 11 and keeps a preset distance from the electromagnet 1, and the magnetic attraction part 31 is used for reciprocating swing along with the change of the direction of the two magnetic poles 11; and an actuator 4 connected to the magnetic attraction member 3 for driving the injection assembly in the insulin pump to inject the liquid medicine in response to the swing of the magnetic attraction portion 31. Specifically, the electromagnetic driving assembly of the utility model transmits current to the electromagnet 1 through the power supply piece 2, so that the electromagnet 1 generates two magnetic poles 11 with magnetism and opposite directions, and then one repulsive magnetic attraction piece 3 is attracted, so that the magnetic attraction part 31 of the magnetic attraction piece 3 swings towards the direction close to one of the magnetic poles 11 under the action of magnetic force, at the moment, the power supply piece 2 changes the directions of the two magnetic poles 11 by changing the positive pole and the negative pole of current output, so that the magnetic attraction part 31 of the magnetic attraction piece 3 swings towards the direction close to the other magnetic pole 11 under the action of magnetic force, based on the working principle, the power supply piece 2 changes the directions of the two magnetic poles 11 according to the preset frequency, so that the magnetic attraction part 31 of the magnetic attraction piece 3 swings back and forth along with the change of the directions of the two magnetic poles 11 in an extending area between the two magnetic poles 11, and then drives the actuator 4 to work, and the injection assembly in the insulin pump is driven to inject liquid medicine, meanwhile, as the magnetic attraction part 31 and the electromagnet 1 keep a preset distance, the magnetic attraction part 31 of the magnetic attraction piece 3 does not suffer from the obstruction and interference of the magnetic poles 11 in the swinging process, the swinging range is large, so that the structure covered by the swinging part is reduced, so that the structure is convenient to drive the swinging part is easy, and the swing part is not influenced by the gravity of the electromagnetic assembly or the self-weight is not influenced by the design or the driving assembly; the scheme realizes the electromagnetic driving insulin pump work through the electromagnet 1, the power supply part 2, the magnetic attraction part 3 and the execution part 4, compared with the prior art, a motor, a speed reducer and other driving devices are not needed, the manufacturing cost is reduced, the execution part 4 works through electromagnetic driving, and compared with the motor driving, the electromagnetic driving insulin pump has small noise, small volume, convenient use and carrying and convenient popularization to diabetics and gestational diabetics; the electromagnetic drive makes the power output more stable, direct and reliable, is favorable for accurately controlling the insulin injection amount of a patient, ensures the physical health of the patient, and has the advantages of high energy conversion efficiency of electricity generation magnetism relative to that of electricity generation, low power consumption, long service time under the condition of the same electric power and convenient long-time use of the patient. Alternatively, the magnetic attraction portion 31 is made of ferromagnetic material. Alternatively, the magnetic attraction portion 31 is an electromagnet. It should be understood that the preset frequency determines the frequency of the reciprocating swing of the magnetic attraction portion 31, and thus determines the injection speed of the liquid medicine, so as to be adaptively adjusted according to the use requirement of the patient. Optionally, the preset frequency is 5 ms/time, that is, the current flow direction of the power supply piece 2 is changed every 5 ms, so as to change the directions of the two magnetic poles 11 of the electromagnet 1, thereby realizing rapid injection of the liquid medicine. Optionally, the electromagnet 1 is arranged in a U-shape, and two magnetic poles 11 are respectively arranged at two ends of the opening end of the electromagnet 1. It should be understood that the preset distance can be adaptively adjusted according to the production requirement of the product, and the swing of the magnetic attraction part 31 can be realized. It will be appreciated that the greater the current supplied by the power supply 2, the greater the magnetic force of the two poles 11 on the electromagnet 1, and the greater the swing speed of the magnetic attraction portion 31. It will be appreciated that when the electromagnet 1 is in a rest state, the north-pointing pole 11 is called north pole, the south-pointing pole 11 is called south pole, and the power supply 2 changes the pointing direction of the pole 11, i.e. changes north pole to south pole and south pole to north pole. It should be appreciated that when the power supply member 2 supplies current to the electromagnet 1, the electromagnet 1 has magnetism and generates magnetic force attracting and repelling the magnetic attraction portion 31, thereby driving the actuator 4 to operate; when the power supply member 2 does not supply current to the electromagnet 1, the electromagnet 1 stops operating, and accordingly, the actuator 4 also fails to operate. It should be understood that the extension area between the two poles 11 refers to the area where the middle area of the two poles 11 extends toward the actuator 4.

As shown in fig. 2 to 5, in the present embodiment, the actuator 4 includes a support housing 41 connected to the magnetic attraction member 3, a ratchet mechanism 42 rotatably disposed on the support housing 41 for circumferential rotation with the reciprocating swing of the magnetic attraction member 31, and a screw mechanism 43 disposed in the ratchet mechanism 42 for pushing the injection assembly to inject the liquid medicine with the circumferential rotation of the ratchet mechanism 42. Specifically, the support housing 41 stably supports the ratchet mechanism 42, so that stability in the rotation process of the ratchet mechanism 42 is ensured, and the ratchet mechanism 42 circumferentially rotates along with the reciprocating swing of the magnetic attraction part 31 to drive the screw rod mechanism 43 to push the injection assembly to inject the liquid medicine.

As shown in fig. 5, in the present embodiment, the screw mechanism 43 includes a connection screw 431 for connecting the injection assembly, and a screw sleeve 432 disposed inside the ratchet mechanism 42 and sleeved outside the connection screw 431, and the connection screw 431 is screwed with the screw sleeve 432. Specifically, the ratchet mechanism 42 drives the screw rod sleeve 432 to rotate synchronously, and the screw rod sleeve 432 drives the connecting screw rod 431 to move along the axial direction of the screw rod sleeve 432 through a threaded structure so as to push the injection assembly to inject the liquid medicine. It should be appreciated that when ratchet mechanism 42 rotates screw sleeve 432, connecting screw 431 is connected to the injection assembly, and connecting screw 431 is only axially movable to complete the injection operation of the injection assembly and cannot rotate with rotation of screw sleeve 432, i.e., connecting screw 431 is circumferentially fixed relative to screw sleeve 432.

As shown in fig. 4 to 5, in the present embodiment, the ratchet mechanism 42 includes a rotation shaft 421 rotatably disposed on the support housing 41 and fixedly sleeved outside the screw sleeve 432, a ratchet 422 fixedly sleeved outside the rotation shaft 421, and a plurality of ratchet teeth sequentially disposed along the circumferential direction of the ratchet 422. Specifically, the ratchet teeth are pushed to drive the ratchet wheel 422 to rotate forward, so as to drive the rotation shaft 421 to rotate, and further drive the screw rod sleeve 432 to rotate, thereby realizing the axial movement of the connecting screw rod 431.

As shown in fig. 4, in the present embodiment, the supporting housing 41 includes a connecting post 411 disposed along a height direction of the supporting housing 41, the magnetic attraction member 3 is rotatably sleeved on the connecting post 411, and the magnetic attraction member 3 further includes a pushing portion 32 disposed corresponding to the ratchet wheel 422 for pushing the ratchet wheel to perform stepwise translation along a tangential direction of the ratchet wheel 422 along with the reciprocating swing of the magnetic attraction member 31, so as to drive the ratchet wheel 422 to perform stepwise rotation. Specifically, the magnetic attraction part 31 swings reciprocally along with the change of the directions of the two magnetic poles 11 of the electromagnet 1, so as to drive the magnetic attraction part 3 to swing reciprocally, and further the pushing part 32 pushes the ratchet to translate stepwise along the tangential direction of the ratchet 422, so that the ratchet 422 is driven to rotate stepwise forward, and meanwhile the pushing part 32 pushes the ratchet to prevent the ratchet 422 from rotating reversely.

As shown in fig. 4, in this embodiment, a limiting protrusion 412 extending along a width direction of the supporting housing 41 is disposed on a side wall of the supporting housing 41, and a plurality of limiting protrusions 412 are disposed at intervals along a length direction of the supporting housing 41 to form a limiting groove, the magnetic attraction element 3 further includes a limiting hole 33 disposed along a thickness direction of the magnetic attraction element 3 and corresponding to the limiting groove, and a limiting block 34 disposed in the limiting hole 33, wherein a limiting end of the limiting block 34 extends into the limiting groove to be abutted against the limiting protrusion 412 during the swinging process of the magnetic attraction element 3 so as to limit a swinging range of the magnetic attraction element 3. Specifically, during the swinging process of the magnetic attraction piece 3, the limiting block 34 swings synchronously, and the limiting end of the limiting block 34 stretches into the limiting groove to be limited by the abutting of the limiting protrusion 412, so that the swinging range of the magnetic attraction piece 3 is limited correspondingly, the situation that the abutting part 32 breaks away from the abutting area of the pawl due to overlarge swinging range of the magnetic attraction piece 3 is avoided, and further the blocking part is possibly blocked by interference of the pawl, so that the movement stability and reliability of the magnetic attraction piece 3 are ensured. Optionally, the limiting groove is disposed along the length direction of the support housing 41, and the length direction of the support housing 41 is the same as the swing direction of the magnetic attraction portion 31, so that the limiting block 34 is slidably disposed in the limiting groove along the swing direction, and the swing range of the magnetic attraction member 3 is properly increased by sliding the limiting block 34 in the limiting groove, so that the small pushing stroke of the pushing portion 32 caused by too small swing range of the magnetic attraction member 3 is avoided, and the rotation speed of the ratchet 422 is too slow, thereby affecting the injection speed of the injection assembly.

As shown in fig. 4, in this embodiment, the end of the support housing 41 away from the magnetic attraction portion 31 is provided with a limiting post 413 disposed along the height direction of the support housing 41, and a plurality of limiting posts 413 are disposed at intervals along the length direction of the support housing 41 to form a limiting gap, and the end of the magnetic attraction member 3 away from the magnetic attraction portion 31 is provided with a limiting portion 35 extending along the length direction of the magnetic attraction member 3 and extending into the limiting gap for abutting against the limiting post 413 during the swing of the magnetic attraction member 3 to limit the swing range of the magnetic attraction member 3. Specifically, in the swinging process of the magnetic attraction piece 3, the limiting part 35 swings synchronously, and the limiting part 35 stretches into the limiting gap to be limited by the abutting joint of the limiting column 413, so that the swinging range of the magnetic attraction piece 3 is limited correspondingly, the situation that the swinging range of the magnetic attraction piece 3 is too large to enable the abutting part 32 to be separated from the abutting area of the pawl is avoided, and further the magnetic attraction piece 3 is blocked by interference of the pawl, so that the movement stability and reliability of the magnetic attraction piece 3 are ensured.

As shown in fig. 4 and 5, in the present embodiment, a plurality of ratchet wheels 422 are arranged along the axial direction of the rotation shaft 421, and the pushing portions 32 are arranged in one-to-one correspondence with the ratchet wheels 422. Specifically, the two pushing parts 32 are respectively arranged on two opposite sides of the magnetic part 31 on the magnetic part 3, and in the process of reciprocating swing of the magnetic part 31, the two pushing parts 32 sequentially and reciprocally push the pawls on the two ratchet wheels 422, so that the rotation speed of the ratchet wheels 422 is greatly improved. It should be understood that when the magnetic attraction portion 31 moves in a direction approaching one of the magnetic poles 11, the pushing portion 32 approaching the magnetic pole 11 pushes the pawl on the corresponding ratchet wheel 422, so as to rotate the ratchet wheel 422; when the magnetic part 31 moves towards the direction close to the other magnetic pole 11, the pushing part 32 close to the other magnetic pole 11 pushes the corresponding pawl on the ratchet wheel 422, so that the ratchet wheel 422 rotates, and as the two ratchet wheels 422 realize synchronous rotation through the rotating shaft 421, namely one ratchet wheel 422 rotates, the other ratchet wheel 422 correspondingly rotates synchronously, the magnetic part 31 swings back and forth once, the ratchet wheel 422 rotates twice, and the rotating speed of the ratchet wheel 422 is greatly improved.

As shown in fig. 2 to 4, in this embodiment, the magnetic attraction member 3 further includes an elastic member 36 sleeved on the connecting post 411 for pressing the magnetic attraction member 3. Specifically, the elastic member 36 presses the swinging member, so that the pressing portion 32 on the swinging member can be always at the same level as a pawl on the ratchet 422, and thus can always press a pawl to move along the tangential direction of the ratchet 422, so as to realize rotation of the ratchet 422. Alternatively, the elastic member 36 is a compression spring.

The insulin pump of this embodiment includes the above-described electromagnetic drive assembly. Specifically, the insulin pump is through adopting foretell electromagnetic drive subassembly, need not to reuse drive arrangement such as motor, reduction gear, low in manufacturing cost, simultaneously reduced the volume greatly, the noise has been reduced, the patient of being convenient for carries and uses, electromagnetic drive makes power take off more stable, directly, reliably, be favorable to accurate control to patient's insulin injection amount, guarantee patient's health, the energy conversion efficiency of electricity generation magnetism is high for the energy conversion efficiency of electricity heat simultaneously, the low power consumption, the live time is long under the circumstances of same electric power, the patient of being convenient for uses for a long time.

In this embodiment, the insulin pump still includes the shell, be equipped with the cavity in the shell so that hold and install each spare part, be equipped with injection subassembly in the shell, injection subassembly includes stock solution subassembly and needle tubing assembly, the stock solution subassembly is used for storing and providing the liquid medicine for patient's injection, electromagnetic drive subassembly is connected to the one end of stock solution subassembly, the needle tubing assembly is connected to the other end of stock solution subassembly, electromagnetic drive subassembly can carry the liquid medicine in the stock solution subassembly to the needle tubing assembly in and carry out the treatment through the final injection of needle tubing assembly into the patient of liquid medicine, be equipped with in the shell and control mainboard subassembly and be used for controlling closing and concrete operation process of electromagnetic drive subassembly, still can be equipped with the energy subassembly that provides the energy for control mainboard subassembly in the shell.

In this embodiment, the shell includes protecgulum and hou gai, and protecgulum and hou gai can constitute a cavity that holds and install spare part jointly, and the junction of protecgulum and hou gai can set up waterproof rubber ring in order to play good water-proof effects. Optionally, the liquid storage assembly comprises a liquid storage cylinder for containing liquid medicine and a piston (not shown) which is cooperatively arranged in the liquid storage cylinder, and the piston can push the liquid medicine in the liquid storage cylinder out of the needle tube assembly when the liquid storage cylinder moves.

In the embodiment, the needle tube assembly comprises a needle tube, a rubber tube and a needle tube control device for driving the needle head in the needle tube assembly to be implanted and pulled out, wherein the needle head of the needle tube is preferably a stainless steel needle head, bacterial infection possibly caused is reduced, the needle tube is connected with the liquid storage assembly through a hose, and liquid is supplied to the needle tube by the liquid storage assembly; the rubber tube is sleeved on the outer side of the needle tube, the needle tube can move relative to the rubber tube, when a patient needs to be injected, the needle head of the needle tube is controlled by the needle tube control device to extend out of the rubber tube, after the injection is finished, the needle head on the needle tube is controlled by the needle tube control device to be retracted into the rubber tube again, and pain of the patient caused by the fact that the needle head exists in the body for a long time is reduced; the back cover is provided with the application piece on one side of the shell which is attached to the body of a patient, the needle hole is formed in the application piece and can be used for enabling the needle head on the needle tube to penetrate through to inject medicine into the patient, the application mode of the back cover replaces the use of the long catheter, and the phenomenon that the long catheter rubs with the body of a user when the long catheter is used, the long catheter is possibly hung on other objects and the like to cause discomfort of the user is avoided.

In the embodiment, the needle tube control device comprises a mounting frame, a sliding block assembly, an inclined surface stop block assembly and an elastic assembly, wherein the mounting frame is arranged in a shell, the elastic assembly comprises a screw, one end of the mounting frame is provided with the screw, the outside of the screw is sleeved with a torsion spring, the outside of the screw is rotationally connected with a herringbone arm, two arms of the herringbone arm are rotationally connected, the rotation of the torsion spring can drive the herringbone arm to extend or retract, the herringbone arm comprises a first connecting rod rotationally connected with the outside of the screw, a second connecting rod rotationally connected with the first connecting rod, the outer end of the second connecting rod is rotationally connected with a sliding part on the sliding block assembly, the sliding assembly comprises a first sliding block, a second sliding block and a sliding rail, the outer end of the second connecting rod is rotationally connected with the first sliding block, the second connecting rod can drive the first sliding block to slide on the sliding rail of the sliding block assembly, the inclined surface stop block assembly penetrates through the inclined surface stop block assembly, one end of the inclined surface stop block assembly, which is positioned in the shell is connected with a stop block, and the stop block is positioned between the first sliding block and the second sliding block, and the stop block is in two use states at the moment, when the inclined surface stop block assembly is pulled outwards, the stop block is rotationally separated from the first sliding block and the second sliding block, and the reset arm is rotationally driven to move on the sliding rail; when the inclined surface stop block assembly is pressed down, the stop block pushes the first sliding block to reset, so that the contact position of the stop block and the first sliding block is in inclined surface fit, the first sliding block is convenient to reset, when the stop block pushes the first sliding block to reset completely, the stop block is positioned between the first sliding block and the second sliding block to separate the first sliding block from the second sliding block, at the moment, the torsion spring is twisted, and the torsion spring has a tendency of restoring to push the first sliding block to move, so that the first sliding block is pushed for the next time; the first sliding block is provided with a first conduction groove, the second sliding block is provided with a second conduction groove, the second conduction groove is used for accommodating a rubber tube, the second sliding block is provided with an adaptation cavity, the rubber tube is provided with a positioning part protruding out of the rubber tube, the positioning part is adapted to the adaptation cavity, and the needle tube penetrates into the rubber tube through the positioning part. Preferably, after injection is completed, the rubber tube is reserved in a reserved tube on the skin of a patient, the needle tube is retracted into the shell, so that the problem of complications caused by the needle remaining in the patient is avoided, specifically, a blocking hole is formed in one end of the second slider, which is far away from the first slider, a spring thimble is correspondingly arranged on the front cover, after the second slider slides to a certain position, the spring thimble pops up and is inserted into the blocking hole, the second slider is fixed, so that the rubber tube cannot be driven to retract, the first slider is reset and retracted under the contraction action of the lambdoidal arm, the needle tube is finally retracted into the rubber tube, and when the next injection is performed, the operation of the button piece is performed, the first slider is pushed to move so as to push the needle tube out.

In the embodiment, the control main board assembly is arranged in the shell in a detachable connection mode, and the detachable connection mode is preferably screw connection, so that after the device is used, the most expensive control main board assembly can be detached for reuse, compared with the prior art, the repeated use mode of the device greatly reduces the use cost of the device, reduces the medical expense of a patient, improves the universality of an insulin pump, and the control main board assembly can be connected with an APP through Bluetooth or a wireless network, is convenient for the patient to operate and control the device through the operation of the APP, and can also be controlled through a control panel on the shell; components which can be communicated with the control main board assembly, the energy assembly and the electromagnetic driving assembly, such as a flexible circuit board, can be arranged in the shell, so that the normal operation of the circuit system of the device is ensured; when detecting that the patient needs to inject insulin, control inclined plane dog subassembly removes the restriction to first slider, and needle tubing subassembly inserts under the patient skin, then starts electromagnetic drive subassembly and provide power for the execution subassembly for liquid medicine in the stock solution subassembly is through needle tubing subassembly injection patient's health, after the injection is accomplished, and inclined plane dog subassembly promotes first slider and resets, and first slider drives the needle tubing and extracts from the patient, and the planting needle of the next time of being convenient for uses. Optionally, the energy component can be an energy supply part such as a button battery which is convenient for miniaturization, so that the design key point of the utility model is more attached, the whole miniaturization design of the utility model is convenient, and meanwhile, the energy component can also be an external power supply, so that the space occupied by the energy component is saved. It is worth mentioning that, the position cover that is close to the rubber tube tip is equipped with sealed colloid, and sealed colloid is located the junction of rubber tube and subsides application piece, and sealed colloid's setting can prevent that liquid from flowing into the casing, plays good water-proof effects.

In this embodiment, the insulin pump further includes a driving reset mechanism, where the driving reset mechanism includes a charging member detachably connected to the energy source assembly to supplement energy source to the energy source assembly and a reset member detachably connected to the executing member 4 to enable the connection screw 431 to extend to push and retract to reset. Specifically, the energy source assembly provides working electric energy to the control main board assembly 50, so that the control main board assembly 50 controls the executive component 4 to work, and then the connecting screw rod 431 of the executive component 4 extends out to push the piston in the injection assembly to inject the liquid medicine into a patient, after the injection of the liquid medicine is completed, the connecting screw rod 431 is separated from the piston, at this time, the injection assembly is disposed in a proper mode, the energy source assembly 60 is connected with a charging member in the driving reset mechanism to store enough electric energy, and meanwhile, the executive component 4 is connected with a reset member in the driving reset mechanism to enable the connecting screw rod 431 to extend out to push and then shrink to reset, so that the energy source assembly, the control main board assembly and the executive component 4 can be assembled with a new piston in an initial state, and then the injection for the patient can be injected again, so that the repeated use of the insulin pump can be realized only by disposing the necessary liquid storage cylinder and the needle tube assembly under the condition of meeting the relevant regulations of medical equipment, and the use cost of the patient can be reduced to the greatest extent.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An electromagnetic drive assembly for use in an insulin pump to drive an injection assembly to inject a medical fluid, comprising:

an electromagnet (1) comprising two magnetic poles (11) arranged at intervals and pointing oppositely;

the power supply piece (2) is electrically connected with the electromagnet (1) and is used for changing magnetism and direction of the two magnetic poles (11) according to preset frequency;

the magnetic attraction piece (3) is oppositely arranged with the electromagnet (1), the magnetic attraction piece (3) comprises a magnetic attraction part (31) which is positioned in an extension area between the two magnetic poles (11) and keeps a preset distance with the electromagnet (1), and the magnetic attraction part (31) is used for reciprocating swing along with the change of the direction of the two magnetic poles (11);

and the executing piece (4) is connected with the magnetic attraction piece (3) and is used for driving an injection assembly in the insulin pump to inject the liquid medicine along with the swing of the magnetic attraction part (31).

2. The electromagnetic drive assembly according to claim 1, wherein the actuator (4) comprises a support housing (41) connected to the magnetic attraction member (3), a ratchet mechanism (42) rotatably arranged on the support housing (41) for circumferential rotation with the reciprocating swing of the magnetic attraction portion (31), and a screw mechanism (43) arranged in the ratchet mechanism (42) for pushing the injection assembly to inject the liquid medicine with the circumferential rotation of the ratchet mechanism (42).

3. The electromagnetic drive assembly according to claim 2, wherein the screw mechanism (43) comprises a connecting screw (431) for connecting the injection assembly and a screw sleeve (432) arranged in the ratchet mechanism (42) and sleeved outside the connecting screw (431), and the connecting screw (431) is in threaded connection with the screw sleeve (432).

4. An electromagnetic drive assembly according to claim 3, wherein the ratchet mechanism (42) comprises a rotation shaft (421) rotatably disposed on the support housing (41) and fixedly sleeved outside the screw sleeve (432), a ratchet (422) fixedly sleeved outside the rotation shaft (421), and a plurality of ratchet teeth sequentially arranged along the circumferential direction of the ratchet (422).

5. The electromagnetic drive assembly according to claim 4, wherein the supporting housing (41) comprises a connecting column (411) arranged along the height direction of the supporting housing (41), the magnetic attraction piece (3) is rotatably sleeved on the connecting column (411), and the magnetic attraction piece (3) comprises an abutting part (32) which is arranged corresponding to the ratchet wheel (422) and is used for abutting against the ratchet wheel to translate stepwise along the tangential direction of the ratchet wheel (422) along with the reciprocating swing of the magnetic attraction part (31) so as to drive the ratchet wheel (422) to rotate stepwise.

6. The electromagnetic driving assembly according to claim 5, wherein a limiting protrusion (412) formed by extending along the width direction of the supporting shell (41) is arranged on the side wall of the supporting shell (41), the limiting protrusions (412) are distributed at intervals along the length direction of the supporting shell (41) to form limiting grooves, the magnetic attraction piece (3) further comprises limiting holes (33) which are formed along the thickness direction of the magnetic attraction piece (3) and are distributed corresponding to the limiting grooves, and limiting blocks (34) which are distributed in the limiting holes (33), and the limiting ends of the limiting blocks (34) extend into the limiting grooves and are used for being abutted with the limiting protrusions (412) in the swinging process of the magnetic attraction piece (3) to limit the swinging range of the magnetic attraction piece (3).

7. The electromagnetic driving assembly according to claim 5, wherein the end portion of the supporting shell (41) away from the magnetic attraction portion (31) is provided with a limiting column (413) distributed along the height direction of the supporting shell (41), the plurality of limiting columns (413) are distributed at intervals along the length direction of the supporting shell (41) to form a limiting gap, the end portion of the magnetic attraction portion (3) away from the magnetic attraction portion (31) is provided with a limiting portion (35) which is formed by extending along the length direction of the magnetic attraction portion (3) and extends into the limiting gap and is used for being abutted with the limiting column (413) in the swinging process of the magnetic attraction portion (3) to limit the swinging range of the magnetic attraction portion (3).

8. The electromagnetic drive assembly according to claim 5, wherein the ratchet wheel (422) is arranged in plurality along the axial direction of the rotation shaft (421), and the pushing portions (32) are arranged in one-to-one correspondence with the ratchet wheel (422).

9. The electromagnetic drive assembly according to claim 5, wherein the magnetic attraction member (3) further comprises an elastic member (36) sleeved on the connecting post (411) for pressing the magnetic attraction member (3).

10. An insulin pump comprising an electromagnetic drive assembly according to any one of claims 1-9.

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