CN219001464U - Detachable liquid medicine infusion device - Google Patents

Abstract

The utility model discloses a detachable liquid medicine infusion device which comprises a first shell and a second shell, wherein the first shell comprises an infusion assembly used for infusing liquid medicine into a patient and an execution assembly connected with the infusion assembly and used for driving the infusion assembly to infuse the liquid medicine, the second shell comprises a memory alloy driving assembly detachably connected with the execution assembly and a control assembly electrically connected with the memory alloy driving assembly and used for controlling the operation of the memory alloy driving assembly, and the first shell and the second shell are detachably assembled and connected. This scheme is realized comparatively expensive control assembly and memory alloy drive assembly's recycle in second casing and the second casing, greatly reduced patient's the cost of multiple use, and provide driving power through the mode that uses the memory alloy to be heated to warp, be favorable to the miniaturization of this device, portable uses, and the practicality is strong, is suitable for extensive popularization and application.

Description

Detachable liquid medicine infusion device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a detachable liquid medicine infusion device.

Background

In the treatment process of a patient, the liquid medicine is injected into the patient through the liquid medicine injection device, and the liquid medicine injection device can simulate the physiological insulin secretion mode to regulate the patient according to the characteristics of different time insulin physiological secretion, so that the insulin pump is a more humanized liquid medicine injection device which is more in line with the physiological insulin secretion mode.

The existing insulin pump is generally provided with a control part, a driving part, an executing part and an infusion part, the driving part is controlled by the control part to work so as to drive the executing part to work and further control the infusion part to infuse insulin into a patient, the infusion part is required to be disposed of in a proper treatment mode according to the relevant regulations of medical equipment after the infusion part finishes infusion operation, however, in order to ensure stable and reliable work in the use process, the insulin pump is designed in an integral structure, so that the insulin pump is troublesome to disassemble and assemble, the existing insulin pump is equivalent to a disposable product, the use cost of the patient is greatly increased, one insulin pump is at least forty-five thousand, more even more than one hundred thousand, the cost is mainly embodied on the control part and the executing part, the multiple use cost is high, the insulin pump is not accepted by type 2 diabetics and diabetics, the driving part in most insulin pumps adopts parts such as a motor, an encoder, a reduction box, a catheter and the like, the insulin pump is large in volume, the number of infused parts can be selected, the insulin pump is inconvenient to carry, the use is inconvenient, and the ambient light is hidden.

Disclosure of Invention

The utility model provides a detachable liquid medicine infusion device, which solves the technical problems that an insulin pump can only be discarded after being used by a patient, and has high price, large volume and inconvenient carrying and use after being used for a long time.

According to one aspect of the utility model, there is provided a detachable medical fluid infusion device comprising a first housing and a second housing, wherein the first housing comprises an infusion assembly for infusing medical fluid into a patient and an execution assembly connected with the infusion assembly for driving the infusion assembly to infuse medical fluid, the second housing comprises a memory alloy driving assembly detachably connected with the execution assembly for driving the execution assembly to work through the memory alloy being deformed by heat so as to drive the infusion assembly to infuse medical fluid, and a control assembly electrically connected with the memory alloy driving assembly for controlling the operation of the memory alloy driving assembly, and the first housing and the second housing are detachably assembled and connected.

As a further improvement of the above technical scheme:

further, the executing assembly comprises a mounting shell arranged in the first shell, a ratchet mechanism rotatably arranged on the mounting shell, a screw rod sleeve fixedly arranged in the ratchet mechanism, an executing screw rod arranged in the screw rod sleeve and fixedly connected with the infusion assembly, and a swinging piece rotatably arranged on the mounting shell and correspondingly arranged with the ratchet mechanism, wherein the screw rod sleeve is in threaded connection with the executing screw rod, and the swinging piece is detachably connected with the memory alloy driving assembly.

Further, the memory alloy driving assembly comprises guide posts respectively arranged at two opposite ends of the swinging member, a memory alloy wire which is rotatably sleeved on the guide posts and detachably connected with the swinging member and is used for being heated and contracted after being electrified, a first communicating piece which is connected with the first end of the memory alloy wire and is used for being electrically connected with the control assembly so that the first end of the memory alloy wire is heated and contracted to drive the swinging member to swing towards the first end of the memory alloy wire, and a second communicating piece which is connected with the second end of the memory alloy wire and is used for being electrically connected with the control assembly so that the second end of the memory alloy wire is heated and contracted to drive the swinging member to swing towards the second end of the memory alloy wire.

Further, the end part of the swinging piece, which faces the memory alloy driving assembly, is provided with an extrusion part which is arranged in a bending way and can be elastically deformed, the extrusion part is arranged between the two guide posts, and the extrusion part is bent to form an extrusion cavity which is used for accommodating the memory alloy wire and is contracted by heating the memory alloy wire so as to swing the extrusion part.

Further, the installation shell comprises a connecting column arranged along the height direction of the installation shell, the swinging piece is rotatably sleeved on the connecting column, and the swinging piece further comprises a pushing part which is arranged corresponding to the ratchet mechanism and used for pushing the ratchet mechanism to rotate step by step along with the swinging of the extrusion part.

Further, the end part of the installation shell, which is far away from the extrusion part, is provided with a plurality of limit posts which are distributed along the height direction of the installation shell, the limit posts are distributed at intervals along the length direction of the installation shell and form limit gaps, and the end part of the swinging piece, which is far away from the extrusion part, is provided with limit parts which are formed by extending along the length direction of the swinging piece and extend into the limit gaps and are used for being abutted with the limit posts in order to limit the swinging range of the swinging piece in the swinging process of the swinging piece.

Further, the control assembly comprises a control circuit board and a controller electrically connected with the control circuit board, and the control circuit board is respectively contacted with the first communicating piece and the second communicating piece.

Further, a sensor which is electrically connected with the controller and is used for transmitting a feedback signal to the controller after being abutted with the limiting part is arranged on the limiting column.

Further, the control assembly further comprises a transmission piece which is sleeved on the connecting column and is respectively contacted with the controller and the swinging piece and used for transmitting current.

Further, the left and right of the first shell and the second shell are detachably spliced; or the first shell and the second shell are detachably assembled and connected up and down.

The utility model has the following beneficial effects:

when the detachable liquid medicine infusion device of the utility model is needed to infuse liquid medicine such as insulin into a patient, the first shell and the second shell are assembled at first and are adhered to the infusion part of the patient, the control component is used for controlling the memory alloy driving component to work after being electrified, so that the memory alloy in the memory alloy driving component is heated and deformed to drive the execution component to work after being electrified, and then the infusion component is driven to infuse the liquid medicine into the patient, thereby realizing the liquid medicine infusion treatment of the patient, after the liquid medicine infusion is finished, the first shell and the second shell are disassembled, the first shell is discarded in a proper treatment mode, the second shell is recycled, the patient only needs to spend relatively less cost to purchase the new first shell to be assembled with the recycled second shell, the detachable liquid medicine infusion device is economical and environment-friendly, and is favorable for recycling resources, the used first shell is discarded in a proper treatment mode, the scheme realizes the recycling of the second shell, the more expensive control component and the memory alloy driving component in the second shell through the first shell and the second shell which are assembled and connected and the execution component and the memory alloy driving component which are detachably connected, greatly reduces the cost of multiple times of use of patients, provides driving power in a mode of using the memory alloy to deform under heat, is beneficial to the miniaturization of the device, is convenient to carry and use, has more selectable infusion positions, such as abdomen, limbs and the like, can reduce the possibility of complications caused by always infusing the same position, further reduces the production cost of the device, meets the requirements of type 1 diabetics, is convenient for popularization to type 2 diabetics and gestational diabetics, has strong practicability and is suitable for wide popularization and application.

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 view showing a structure of a detachable medical fluid infusion device according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view showing the structure of a detachable medical fluid infusion device according to a preferred embodiment of the present utility model;

FIG. 3 is a schematic view showing the structure of a detachable medical fluid infusion device according to a preferred embodiment of the present utility model;

FIG. 4 is an exploded view of the actuator assembly of the detachable medical fluid infusion device of the preferred embodiment of the present utility model;

fig. 5 is a partially exploded view of the actuator assembly of the detachable medical fluid infusion device according to the preferred embodiment of the present utility model.

Legend description:

1. a first housing; 2. a second housing; 3. an infusion assembly; 4. an execution component; 41. a mounting shell; 411. a connecting column; 412. a limit column; 413. a sensor; 42. a ratchet mechanism; 43. a screw rod sleeve; 44. executing a screw rod; 45. a swinging member; 451. an extrusion part; 452. a pushing part; 453. a limit part; 5. a memory alloy driving assembly; 51. a guide post; 52. a memory alloy wire; 53. a first communication member; 54. a second communication member; 6. a control assembly; 61. a control circuit board; 62. a controller; 63. and a transmission member.

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 view showing a structure of a detachable medical fluid infusion device according to a preferred embodiment of the present utility model; FIG. 2 is a schematic view showing the structure of a detachable medical fluid infusion device according to a preferred embodiment of the present utility model; FIG. 3 is a schematic view showing the structure of a detachable medical fluid infusion device according to a preferred embodiment of the present utility model; FIG. 4 is an exploded view of the actuator assembly of the detachable medical fluid infusion device of the preferred embodiment of the present utility model; fig. 5 is a partially exploded view of the actuator assembly of the detachable medical fluid infusion device according to the preferred embodiment of the present utility model.

As shown in fig. 1 to 3, the detachable drug solution infusion device of the present embodiment includes a first housing 1 and a second housing 2, the first housing 1 includes an infusion assembly 3 for infusing a drug solution into a patient and an execution assembly 4 connected with the infusion assembly 3 for driving the infusion assembly 3 to infuse the drug solution, the second housing 2 includes a memory alloy driving assembly 5 detachably connected with the execution assembly 4 for driving the execution assembly 4 to work through thermal deformation of a memory alloy so as to drive the infusion assembly 3 to infuse the drug solution, and a control assembly 6 electrically connected with the memory alloy driving assembly 5 for controlling the operation of the memory alloy driving assembly 5, and the first housing 1 and the second housing 2 are detachably assembled and connected. Specifically, when the detachable liquid medicine infusion device of the utility model needs to infuse liquid medicine such as insulin into a patient, the first shell 1 and the second shell 2 are assembled at first and are adhered to the infusion part of the patient, the memory alloy driving assembly 5 is controlled to work after being electrified through the control assembly 6, so that the memory alloy in the memory alloy driving assembly 5 is heated and deformed after being electrified to drive the execution assembly 4 to work, and the infusion assembly 3 is driven to infuse the liquid medicine into the patient, thereby realizing the liquid medicine infusion treatment of the patient, after the liquid medicine infusion is finished, the first shell 1 and the second shell 2 are disassembled, the first shell 1 is abandoned by adopting a proper treatment mode, the second shell 2 is recycled, the patient only needs to purchase a new first shell 1 with relatively less cost to be assembled with the recycled second shell 2, the detachable liquid medicine infusion device can be normally used, is economical and environment-friendly, and is favorable for recycling resources, the used first shell 1 is discarded by adopting a proper treatment mode, the scheme realizes the recycling of the second shell 2 and the more expensive control component 6 and the memory alloy driving component 5 in the second shell 2 through the assembled and connected first shell 1 and second shell 2 and the detachably connected execution component 4 and the memory alloy driving component 5, greatly reduces the cost of multiple times of use of patients, provides driving power by using the mode that the memory alloy is heated and deformed, does not need to use devices such as a motor, a speed reducer and the like compared with the prior driving component, is beneficial to the miniaturization of the device, is convenient to carry and use, has more selectable infusion parts such as abdomen, limbs and the like, can reduce the possibility of complications caused by always infusing the same part, simultaneously further reduces the production cost of the device, the requirements of type 1 diabetics are met, the Chinese medicinal composition is convenient to popularize for type 2 diabetics and gestational diabetics, has strong practicability, and is suitable for wide popularization and application.

As shown in fig. 4 to 5, in the present embodiment, the execution assembly 4 includes a mounting housing 41 disposed in the first housing 1, a ratchet mechanism 42 rotatably disposed on the mounting housing 41, a screw sleeve 43 fixedly disposed in the ratchet mechanism 42, an execution screw 44 disposed in the screw sleeve 43 and fixedly connected with the infusion assembly 3, and a swinging member 45 rotatably disposed on the mounting housing 41 and correspondingly disposed with the ratchet mechanism 42, the screw sleeve 43 and the execution screw 44 are in threaded connection, and the swinging member 45 is detachably connected with the memory alloy driving assembly 5. Specifically, the swing piece 45 is driven to swing by the memory alloy driving component 5 so as to drive the ratchet mechanism 42 to rotate step by step and further drive the screw rod sleeve 43 to rotate synchronously, and the execution screw rod 44 is fixedly connected with the infusion component 3, so that the execution screw rod 44 is fixed circumferentially and differently relative to the screw rod sleeve 43 to axially extend to push the infusion component 3 to infuse liquid medicine.

As shown in fig. 4 to 5, in this embodiment, the ratchet mechanism 42 includes a rotation shaft rotatably disposed on the mounting housing 41, a ratchet fixedly sleeved outside the rotation shaft, and a plurality of ratchet teeth sequentially arranged along the circumferential direction of the ratchet, and a connection cavity connected to the screw rod sleeve 43 is axially provided in the rotation shaft. Specifically, when the liquid medicine is required to be infused, the swinging piece 45 pushes the ratchet to drive the ratchet to rotate step by step, at this time, the ratchet drives the rotating shaft to rotate step by step, and then drives the screw rod sleeve 43 to rotate step by step, so that the extending pushing of the screw rod 44 is realized.

As shown in fig. 2 and 3, in the present embodiment, the memory alloy driving assembly 5 includes guide posts 51 respectively disposed at opposite ends of the swinging member 45, a memory alloy wire 52 rotatably sleeved on the guide posts 51 and detachably connected to the swinging member 45 for heat shrinkage after power-on, a first communication member 53 connected to the first end of the memory alloy wire 52 for electrically connecting to the control assembly 6 for heat shrinkage of the first end of the memory alloy wire 52 to drive the swinging member 45 to swing towards the first end of the memory alloy wire 52, and a second communication member 54 connected to the second end of the memory alloy wire 52 for electrically connecting to the control assembly 6 for heat shrinkage of the second end of the memory alloy wire 52 to drive the swinging member 45 to swing towards the second end of the memory alloy wire 52. Specifically, the control component 6 is communicated with the first communicating piece 53 and disconnected from the second communicating piece 54, so that the first end of the memory alloy wire 52 is electrified and heated to shrink, and the swinging piece 45 is driven to swing towards the first end of the memory alloy wire 52; the control assembly 6 is disconnected from the first communicating piece 53 and communicated with the second communicating piece 54, so that the second end of the memory alloy wire 52 is electrified and heated to shrink, and then the swinging piece 45 is driven to swing towards the second end of the memory alloy wire 52, so as to realize the reciprocating swinging of the swinging piece 45 in a secondary cycle. It should be understood that the specific material of the memory alloy wire 52 belongs to the technology known to those skilled in the art, and will not be described herein in detail, as long as the heat shrinkage after power-on can be achieved.

As shown in fig. 3, in the present embodiment, the end of the swinging member 45 facing the memory alloy driving assembly 5 is provided with a bending-arranged and elastically deformable extrusion part 451, the extrusion part 451 is arranged between the two guide posts 51, and the extrusion part 451 is bent to form an extrusion cavity for accommodating the memory alloy wire 52 and swinging the extrusion part 451 by heat shrinkage of the memory alloy wire 52. Specifically, when the first casing 1 and the second casing 2 are assembled, the memory alloy wire 52 is extruded into the extrusion cavity along the assembly direction, so that the extrusion part 451 is subjected to certain elastic deformation to be in extrusion connection with the memory alloy wire 52, and when the first casing 1 and the second casing 2 are disassembled, the memory alloy wire 52 is directly separated from the extrusion part 451 along the disassembly direction due to the reverse disassembly direction and the assembly direction, so that the disassembly of the execution assembly 4 and the memory alloy driving assembly 5 is realized, and the first casing 1 and the second casing 2 are convenient to disassemble and assemble. It should be understood that the elastic deformation direction of the extrusion part 451 is disposed at an angle to the swinging direction of the extrusion part 451, so as to avoid the elastic deformation of the extrusion part 451 and release of the memory alloy wire 52 when the memory alloy wire 52 is shrunk by heating.

As shown in fig. 4, in the present embodiment, the mounting housing 41 includes a connection post 411 disposed along a height direction of the mounting housing 41, the swinging member 45 is rotatably sleeved on the connection post 411, and the swinging member 45 further includes a pushing portion 452 disposed corresponding to the ratchet mechanism 42 for pushing the ratchet mechanism 42 to rotate stepwise along with the swinging of the pressing portion 451. Specifically, the memory alloy wire 52 repeatedly contracts when heated towards the first end of the memory alloy wire 52 or towards the second end of the memory alloy wire 52, so as to drive the extrusion part 451 to swing repeatedly, and further drive the swinging part 45 to swing repeatedly, so as to drive the pushing part 452 to push the ratchet mechanism 42 repeatedly, thereby realizing the step-by-step rotation of the ratchet mechanism 42.

As shown in fig. 4, in the present embodiment, the end of the mounting housing 41 away from the pressing portion 451 is provided with a plurality of limiting posts 412 disposed along the height direction of the mounting housing 41, the plurality of limiting posts 412 are disposed at intervals along the length direction of the mounting housing 41 and form a limiting gap, and the end of the swinging member 45 away from the pressing portion 451 is provided with a limiting portion 453 extending along the length direction of the swinging member 45 and extending into the limiting gap for abutting against the limiting posts 412 during the swinging of the swinging member 45 to limit the swinging range of the swinging member 45. Specifically, during the swinging process of the swinging member 45, the limiting portion 453 swings synchronously, and the limiting portion 453 stretches into the limiting gap to be limited by the abutting of the limiting post 412, so that the swinging range of the swinging member 45 can be limited correspondingly, the swinging range of the swinging member 45 is prevented from being too large, the pushing portion 452 is separated from the pushing area of the ratchet, and further the locking is possibly caused by interference of the ratchet, so that the movement stability and reliability of the swinging member 45 are ensured.

As shown in fig. 4, in this embodiment, a plurality of limiting protrusions extending along the width direction of the mounting housing 41 are disposed on the side wall of the mounting housing 41, and a plurality of limiting protrusions are disposed at intervals along the length direction of the mounting housing 41 to form a limiting groove, the swinging member 45 further includes a limiting hole disposed along the thickness direction of the swinging member 45 and corresponding to the limiting groove, and a limiting block disposed in the limiting hole, and the limiting end of the limiting block extends into the limiting groove to be abutted with the limiting protrusions during the swinging of the swinging member 45 to limit the swinging range of the swinging member 45. Specifically, during the swinging process of the swinging member 45, the limiting block swings synchronously, and the limiting end of the limiting block stretches into the limiting groove to be limited by the abutting of the limiting protrusion, so that the swinging range of the swinging member 45 can be limited correspondingly, and the situation that the pushing part 452 breaks away from the pushing area of the ratchet and possibly is blocked due to interference of the ratchet is avoided.

As shown in fig. 3, in the present embodiment, the control assembly 6 includes a control circuit board 61 and a controller 62 electrically connected to the control circuit board 61, and the control circuit board 61 is in contact with the first communication member 53 and the second communication member 54, respectively. Specifically, the controller 62 controls the control circuit board 61 to realize that when the first communicating member 53 is electrified with the control circuit board 61, the second communicating member 54 is disconnected with the control circuit board 61, so as to drive the swinging member 45 to swing towards the first end of the memory alloy wire 52; or when the second communicating member 54 is electrified with the control circuit board 61, the first communicating member 53 is disconnected with the control circuit board 61, so as to drive the swinging member 45 to swing towards the second end of the memory alloy wire 52. It should be understood that the specific structure of the control circuit board 61 is well known to those skilled in the art, and will not be repeated here. Alternatively, the controller 62 is a PLC controller 62. It should be understood that the specific structure of the PLC controller 62 is well known to those skilled in the art and will not be described in detail herein.

As shown in fig. 4, in the present embodiment, a sensor 413 electrically connected to the controller 62 and configured to transmit a feedback signal to the controller 62 after abutting against the limiting portion 453 is disposed on the limiting post 412. Specifically, when the control circuit board 61 is electrified to the first communicating member 53 and is disconnected from the second communicating member 54, so that the swinging member 45 swings towards the first end of the memory alloy wire 52, the limiting portion 453 swings towards the limiting post 412 located at the second end of the memory alloy wire 52, until the limiting portion 453 abuts against the limiting post 412, the sensor 413 transmits a feedback signal to the controller 62, which indicates that the swinging member 45 has swung into place, at this time, the controller 62 controls the control circuit board 61 to be disconnected from the first communicating member 53 and to be electrified to the second communicating member 54, so that the swinging member 45 swings towards the second end of the memory alloy wire 52, and accordingly, the limiting portion 453 swings towards the limiting post 412 located at the first end of the memory alloy wire 52, until the limiting portion 453 abuts against the limiting post 412, the sensor 413 transmits a feedback signal to the controller 62, which indicates that the swinging member 45 has swung into place; the sensor 413 limits the swing range of the swinging piece 45, and the swinging piece 45 is prevented from being blocked or damaged due to excessive swinging.

As shown in fig. 4, in this embodiment, the control assembly 6 further includes a transmission member 63 sleeved on the connection post 411 and respectively contacting the controller 62 and the swinging member 45 for transmitting current. Specifically, the current after the first communication member 53 or the second communication member 54 is electrified with the control circuit board 61 flows through the memory alloy wire 52, the swinging member 45 and the transmission member 63 in sequence and then flows into the controller 62, so that a complete current loop is formed, and the memory alloy wire 52 is ensured to be electrified and deformed by heat. Optionally, the transmission 63 is a compression spring.

In this embodiment, the first casing 1 and the second casing 2 are detachably assembled and connected up and down. Optionally, an end surface of the first housing 1 facing away from the second housing 2 is provided with an application plate for application to the body surface of the patient.

In another embodiment, the first shell 1 and the second shell 2 are detachably assembled and connected left and right. Optionally, an application plate for applying to the body surface of the patient is provided on the same end face of the first housing 1 and the second housing 2.

In this embodiment, the infusion assembly 3 includes a reservoir for storing medical fluid fixedly connected to the actuator screw 44 and an infusion member in communication with the reservoir for infusing medical fluid into a patient. Specifically, the lead screw 44 is executed to push the liquid medicine of the liquid storage part into the infusion part, and then the liquid medicine is infused into the patient through the infusion part, so that the liquid medicine infusion is realized. Optionally, the infusion part comprises a needle tube, a rubber tube and a needle tube control mechanism for driving the needle implantation and extraction of the needle tube, wherein the needle of the needle tube is preferably a stainless steel needle, so that bacterial infection possibly caused is reduced, the needle tube is connected with the liquid storage part through a hose, and the liquid storage part supplies liquid for the needle tube; the rubber tube cover is located the outside of needle tubing, and the needle tubing can take place relative motion with the rubber tube between, when needs infuse the patient, the syringe needle of needle tubing is stretched out outside the rubber tube to needle tubing control mechanism control needle tubing, after accomplishing the infusion, and the syringe needle on the needle tubing control mechanism control needle tubing is received in the rubber tube again, reduces the patient because of the syringe needle is stored the misery that produces in the body for a long time. Optionally, the base plate pastes to patient's health one side and is equipped with the piece of applying, has seted up the pinhole on the piece of applying and can supply the syringe needle on the needle tubing to pass and carry out the drug infusion to the patient, has replaced the use of long pipe through this kind of mode of applying, has avoided when using long pipe and user's health friction, long pipe possibly hang on other objects etc. and lead to the phenomenon emergence of patient's discomfort. Optionally, the needle tube control mechanism 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 the shell, the elastic assembly comprises a screw, a torsion spring is installed at one end of the mounting frame, the outside of the screw is sleeved with the 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 between the first sliding block and the second sliding block, and the stop block is in two use states, and the stop block is separated into two use states when the inclined surface stop block assembly is pulled outwards, the first sliding block and the second sliding block rotates and the second sliding block and the reset arm is rotationally and reset, and the second sliding block is driven to move on the sliding rail and the first sliding block and the sliding block; 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 the infusion is finished, 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 herringbone arm, the needle tube is finally retracted into the rubber tube, and when the next infusion is carried out, the operation of the button piece is carried out, the first slider is pushed to move so as to push the needle tube out.

In this embodiment, the liquid storage member includes a liquid storage housing and a piston disposed in the liquid storage housing, and a connecting groove fixedly connected to the actuating screw 44 is concavely disposed on an end surface of the piston facing the actuating screw 44. Specifically, the execution screw rod 44 is fixedly connected through the connecting groove, so that when the execution assembly 4 drives the execution screw rod 44 to extend and push, the liquid medicine in the liquid storage shell is led into the infusion part.

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. The utility model provides a detachable liquid medicine infusion device, a serial communication port, including first casing (1) and second casing (2), including being used for infusing the infusion subassembly (3) in the patient with the liquid medicine in first casing (1) and being connected with infusion subassembly (3) be used for driving the execution subassembly (4) of infusion subassembly (3) infusion liquid medicine, include in second casing (2) be used for through memory alloy thermal deformation with execution subassembly (4) detachable connection with execution subassembly (4) work and then drive memory alloy drive subassembly (5) and be used for controlling memory alloy drive subassembly (5) work with memory alloy drive subassembly (5) electricity connection, first casing (1) and second casing (2) detachable assemble and connect.

2. The detachable liquid medicine infusion device according to claim 1, wherein the execution assembly (4) comprises a mounting shell (41) arranged in the first shell (1), a ratchet mechanism (42) rotatably arranged on the mounting shell (41), a screw rod sleeve (43) fixedly arranged in the ratchet mechanism (42), an execution screw rod (44) arranged in the screw rod sleeve (43) and fixedly connected with the infusion assembly (3), and a swinging member (45) rotatably arranged on the mounting shell (41) and correspondingly arranged with the ratchet mechanism (42), the screw rod sleeve (43) is in threaded connection with the execution screw rod (44), and the swinging member (45) is detachably connected with the memory alloy driving assembly (5).

3. The detachable liquid medicine infusion device according to claim 2, wherein the memory alloy driving assembly (5) comprises guide posts (51) respectively arranged at two opposite ends of the swinging member (45), a memory alloy wire (52) rotatably sleeved on the guide posts (51) and detachably connected with the swinging member (45) and used for shrinking after being electrified, a first communicating piece (53) connected with the first end of the memory alloy wire (52) and used for electrically connecting with the control assembly (6) so as to shrink the first end of the memory alloy wire (52) by heating and further drive the swinging member (45) to swing towards the first end of the memory alloy wire (52), and a second communicating piece (54) connected with the second end of the memory alloy wire (52) and used for electrically connecting with the control assembly (6) so as to shrink the second end of the memory alloy wire (52) by heating and further drive the swinging member (45) to swing towards the second end of the memory alloy wire (52).

4. A detachable medical fluid infusion device according to claim 3, wherein the end of the swinging member (45) facing the memory alloy driving assembly (5) is provided with a bending-arranged and elastically deformable pressing part (451), the pressing part (451) is arranged between the two guide posts (51), and the pressing part (451) is bent to form a pressing cavity for accommodating the memory alloy wire (52) and swinging the pressing part (451) by heat shrinkage of the memory alloy wire (52).

5. The detachable medical fluid infusion device according to claim 4, wherein the mounting housing (41) includes a connection post (411) disposed along a height direction of the mounting housing (41), the swinging member (45) is rotatably fitted over the connection post (411), and the swinging member (45) further includes a pushing portion (452) disposed corresponding to the ratchet mechanism (42) for pushing the ratchet mechanism (42) to rotate stepwise with swinging of the pressing portion (451).

6. The detachable medical fluid infusion device according to claim 5, wherein the end portion of the installation housing (41) away from the pressing portion (451) is provided with a plurality of stopper posts (412) arranged along the height direction of the installation housing (41), the stopper posts (412) are arranged at intervals along the length direction of the installation housing (41) and form a stopper gap, and the end portion of the swinging member (45) away from the pressing portion (451) is provided with a stopper portion (453) extending along the length direction of the swinging member (45) and extending into the stopper gap for abutting against the stopper posts (412) during the swinging of the swinging member (45) to limit the swinging range of the swinging member (45).

7. The detachable medical fluid infusion device according to claim 6, wherein the control assembly (6) comprises a control circuit board (61) and a controller (62) electrically connected to the control circuit board (61), the control circuit board (61) being in contact with the first communication member (53) and the second communication member (54), respectively.

8. The detachable medical fluid infusion device according to claim 7, wherein the limit post (412) is provided with a sensor (413) electrically connected to the controller (62) and configured to transmit a feedback signal to the controller (62) after abutting against the limit portion (453).

9. The detachable medical fluid infusion device according to claim 7, wherein the control assembly (6) further comprises a transmission member (63) for transmitting electric current, which is sleeved on the connection post (411) and is in contact with the controller (62) and the swinging member (45), respectively.

10. The detachable medical fluid infusion device according to any one of claims 1-9, wherein the first housing (1) and the second housing (2) are detachably assembled and connected right and left; or alternatively

The first shell (1) and the second shell (2) are detachably assembled and connected up and down.

Images