CN117298377A - Medicine storage component, medicine liquid infusion device and medicine liquid infusion system - Google Patents

Medicine storage component, medicine liquid infusion device and medicine liquid infusion system Download PDF

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Publication number
CN117298377A
CN117298377A CN202210711697.8A CN202210711697A CN117298377A CN 117298377 A CN117298377 A CN 117298377A CN 202210711697 A CN202210711697 A CN 202210711697A CN 117298377 A CN117298377 A CN 117298377A
Authority
CN
China
Prior art keywords
cavity
plug
bottle
opening
infusion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210711697.8A
Other languages
Chinese (zh)
Inventor
闫柯峥
胡贤龙
陶言聪
陈想
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan United Imaging Zhirong Medical Technology Co Ltd
Original Assignee
Wuhan United Imaging Zhirong Medical Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan United Imaging Zhirong Medical Technology Co Ltd filed Critical Wuhan United Imaging Zhirong Medical Technology Co Ltd
Priority to CN202210711697.8A priority Critical patent/CN117298377A/en
Publication of CN117298377A publication Critical patent/CN117298377A/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/31556—Accuracy improving means
    • A61M5/31558—Accuracy improving means using scaling up or down transmissions, e.g. gearbox
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2026—Semi-automatic, e.g. user activated piston is assisted by additional source of energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/206—With automatic needle insertion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3118—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula
    • A61M2005/312—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula comprising sealing means, e.g. severable caps, to be removed prior to injection by, e.g. tearing or twisting

Abstract

The invention relates to a medicine storage component, a medicine liquid infusion device and a medicine liquid infusion system, and relates to the technical field of medicine liquid injection. The medicine storage component comprises a medicine storage bottle, a pushing plug, a driving part and a blocking part; the medicine storage bottle comprises a bottle cavity and an opening communicated with the bottle cavity; the pushing plug is arranged in the bottle cavity to divide the bottle cavity into a first cavity and a second cavity communicated with the opening; the second cavity is used for storing the liquid medicine; the driving part is accommodated in the first cavity; the plugging part is arranged at the opening of the medicine storage bottle; the blocking portion has an open state in which the second chamber is capable of communicating with the outside, and the push plug is configured to move toward the opening of the drug storage bottle in the axial direction of the bottle chamber in response to a pressure difference of the driving portion and the drug solution acting on the push plug. The medicine storage component provided by the invention utilizes the pressure difference of the pushing plug along the axial two sides of the bottle cavity to drive the pushing plug to move so as to squeeze the medicine liquid to continuously flow out, thereby reducing the whole volume, the weight and the manufacturing cost.

Description

Medicine storage component, medicine liquid infusion device and medicine liquid infusion system
Technical Field
The invention relates to the technical field of liquid medicine injection, in particular to a medicine storage component, a liquid medicine infusion device and a liquid medicine infusion system.
Background
At present, when continuous transfusion is performed, liquid medicine is injected in a pushing mode mainly through a motor driving mode, and the motion mode of a motor is controlled through electric signal transmission so as to meet the requirement of micro or quantitative injection.
However, taking into account patient's condition requirements, it may be the case that the drug injection is carried around. At this time, the above-mentioned method exposes the drawbacks: for example, because the motor drives the necessary structure to cause the whole weight to be heavy, can produce the sense of oppression when wearing or carrying for a long time; if a small-sized motor is used for weight reduction, durability is low and frequent maintenance is required.
Disclosure of Invention
Based on this, it is necessary to provide a drug storage component which is small in size, light in weight, low in cost, capable of meeting continuous injection and high in durability, aiming at the technical problem that the drug bottle cannot be light in weight and continuous injection during continuous transfusion in the prior art.
A medicine storage component, which comprises a medicine storage bottle, a pushing plug, a driving part and a plugging part; the medicine storage bottle comprises a bottle cavity and an opening communicated with the bottle cavity; the pushing plug is arranged in the bottle cavity to divide the bottle cavity into a first cavity and a second cavity communicated with the opening; the second cavity is used for storing liquid medicine; the driving part is accommodated in the first cavity, and the plugging part is arranged at the opening of the medicine storage bottle; wherein the blocking portion has an open state in which the second chamber is capable of communicating with the outside, and the push plug is configured to move toward the opening of the drug storage bottle in the axial direction of the bottle chamber in response to a pressure difference between the driving portion and the drug solution acting on the push plug.
When the plugging part is in an open state, the second cavity is communicated with the external environment, so that the pressure environment in the second cavity is damaged, and the liquid medicine in the second cavity flows out from the opening. Moreover, because the liquid medicine in the second cavity is gradually reduced, the stress balance between the second cavity and the first cavity is promoted to break, the pressure of the liquid medicine acting on the pushing plug is smaller than the pressure of the driving part acting on the pushing plug, and the pushing plug moves towards the opening side along the axial direction of the bottle cavity under the action of the pressure difference so as to squeeze the liquid medicine in the second cavity, so that the liquid medicine continuously flows out of the opening. That is, the medicine storage component provided by the invention utilizes the plugging part to promote the second cavity to be communicated with the outside in an open state, and then utilizes the pressure difference of the pushing plug along the axial two sides of the bottle cavity to promote the pushing plug to move towards the opening, so that the medicine liquid in the second cavity continuously flows out, and the structure, the installation space and the subsequent maintenance operation which are necessary when a motor or screw drive are not needed are not considered, thereby reducing the whole volume, the weight and the manufacturing cost and improving the durability.
In one embodiment, the medicine storage assembly further comprises an elastic piece arranged in the first cavity, one end of the elastic piece is connected to one end cavity wall of the first cavity, which is away from the opening, and the other end of the elastic piece is connected to the pushing plug; the elastic member is used for providing elastic force for enabling the pushing plug to have a moving trend towards the opening.
In one embodiment, the driving part comprises compressed gas filled in the first cavity; the blocking portion has a closed state in which the pressure of the compressed gas acting on the push plug is equal to the pressure of the liquid medicine acting on the push plug so as to keep the push plug stationary.
In one embodiment, the first chamber is filled with a chemical; the driving part comprises gas generated by chemical reaction of the chemical substances under preset conditions in an opening state, and the pressure of the gas acting on the pushing plug is larger than the pressure of the liquid medicine acting on the pushing plug so as to push the pushing plug to move towards the opening.
In one embodiment, an opening is arranged at one end of the medicine storage bottle opposite to the opening; the medicine storage component further comprises a tail plug which is detachably arranged at the opening of the medicine storage bottle; the blocking part comprises a blocking plug which is arranged at the opening of the medicine storage bottle; in the open state, the occlusion plug is configured to be pierced by an infusion needle.
In one embodiment, the drug storage assembly further comprises a distance sensor having a transmitting end and a receiving end; the transmitting end is arranged on one of the tail plug and the pushing plug, and the receiving end is arranged on the other one of the tail plug and the pushing plug.
In one embodiment, the drug storage vial comprises: a body portion, the bottle cavity being provided in the body portion; the neck is provided with a liquid outlet channel which is communicated with the second cavity and the opening; the radial dimension of the neck is smaller than the radial dimension of the bottle cavity.
The invention also provides a liquid medicine infusion device, which comprises the medicine storage component and the needle head component positioned on one side of the plugging part away from the pushing plug, wherein the needle head component comprises an infusion needle, the liquid inlet end of the infusion needle can pierce the plugging part and is communicated with the second cavity, so that the pushing plug generates pressure difference along the two axial sides of the bottle cavity, and the pushing plug can move towards the opening under the action of the pressure difference so as to output liquid medicine from the liquid outlet end of the infusion needle.
In one embodiment, the needle assembly further comprises a hub and a driver mounted to the hub; the needle seat is provided with an assembly hole for penetrating the infusion needle; the driver is configured to drive the infusion needle relative to the hub in an axial direction of the infusion needle to place the infusion channel in fluid communication with or blocked from the second cavity.
In one embodiment, the number of the driving parts is two, and the two driving parts are respectively arranged at two sides of the needle seat along the axial direction of the infusion needle; the two driving parts can extend or retract along the axial direction of the infusion needle, one driving part is used for driving the infusion needle to extend into the second cavity, and the other driving part is used for driving the infusion needle to withdraw from the second cavity.
In one embodiment, the infusion needle is configured with a notch, and the notch is in communication with the infusion channel of the infusion needle and serves as the fluid inlet end of the infusion channel.
The invention also provides a liquid medicine infusion system which comprises the liquid medicine infusion device and the control module, wherein the control module is electrically connected with the liquid medicine infusion device.
Drawings
FIG. 1 is a first schematic illustration of a drug storage assembly according to an embodiment of the present invention;
FIG. 2 is a second schematic view of a drug storage assembly according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a needle assembly of a medical fluid infusion device according to an embodiment of the present invention;
FIG. 4 is a partial schematic view of a needle assembly of a medical fluid infusion device according to an embodiment of the present invention;
fig. 5 is a schematic view of a medical fluid infusion device according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of A-A of FIG. 5;
FIG. 7 is a partial cross-sectional view showing an infusion needle exiting the second chamber in a medical fluid infusion device according to an embodiment of the present invention;
FIG. 8 is a partial cross-sectional view showing an infusion needle in an initial state in the medical fluid infusion device according to the embodiment of the present invention;
fig. 9 is a schematic diagram of a medical fluid infusion system according to an embodiment of the present invention.
Reference numerals: 10-a medicine storage bottle; 11-pushing the plug; 12-plugging part; 13-a driving part; 14-tail plugs; 15-a distance sensor; 100-a drug storage component; 101-a bottle cavity; 102-opening; 103-open; 104-neck; 121-blocking; 131-an elastic member; 132-compressing the gas; 151-transmitting end; 152—a receiving end; 20-an infusion needle; 21-a needle stand; 22-a driving member; 200-a needle assembly; 201-notch; 202-an infusion channel; 210-fitting holes; 221-a first driving member; 222-a second driver; 1000-a liquid medicine infusion device; 1011-a first cavity; 1012-a second cavity; 2000-a control module; 3000-power supply.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
In order to continuously use the conventional hormone (e.g., insulin), anesthetic (for pain relief), anticancer agent, antibiotic or heparin, the most common method is to push the medicinal solution to the subcutaneous, vascular, muscular, etc. human body parts by means of an electric pump; meanwhile, the injection dosage can be finely controlled according to the state of a patient through a circuit or a computer, so that the micro-injection or quantitative injection is satisfied. However, taking into account patient's condition requirements, it may be the case that the drug injection is carried around. At this time, the above-mentioned method exposes the drawbacks: for example, because the motor drives the necessary structure to cause the whole weight to be heavy, can produce the sense of oppression when wearing or carrying for a long time; if a small-sized motor is used for weight reduction, durability is low and frequent maintenance is required.
In view of the above problems, an embodiment of the present invention provides a drug storage assembly, which can achieve light weight, small volume, low cost and good durability during continuous infusion. The drug storage assembly is described in detail below.
FIG. 1 is a first schematic illustration of a drug storage assembly according to an embodiment of the present invention; fig. 2 is a second schematic view of a drug storage assembly according to an embodiment of the present invention. Referring to fig. 1 and 2, a drug storage assembly 100 provided in this embodiment includes a drug storage bottle 10, a pushing plug 11, a driving portion 13 and a blocking portion 12. Wherein the medicine storage bottle 10 includes a bottle cavity 101 and an opening 102 communicating with the bottle cavity 101, a push plug 11 is provided in the bottle cavity 101 to partition the bottle cavity 101 into a first cavity 1011 and a second cavity 1012 communicating with the opening 102, and the second cavity 1012 is used for storing a medicine liquid. The driving part 13 is accommodated in the first cavity 1011; the closure 12 is disposed at the opening 102 of the drug storage vial 10. Wherein the blocking portion 12 has an open state, and in the open state, the second cavity 1012 is capable of communicating with the outside, and the push plug 11 is configured to move toward the opening 102 of the drug storage bottle 10 in the axial direction of the bottle cavity 101 in response to a pressure difference of the driving portion 13 and the drug solution acting on the push plug 11.
Specifically, when the second cavity 1012 stores the liquid medicine and the blocking portion 12 is blocked at the opening 102 of the medicine storage bottle 10, the pressure of the liquid medicine acting on the push plug 11 and the pressure of the driving portion 13 acting on the push plug 11 are in a stress balance state, and the push plug 11 is stationary in the bottle cavity 101. When the blocking portion 12 is pierced by the infusion needle 20 or other needle for infusion of a medical fluid so that the blocking portion 12 is in an open state, the second cavity 1012 communicates with the external environment, so that the pressure environment inside the second cavity 1012 is destroyed, and the medical fluid in the second cavity 1012 flows out of the opening 102. Meanwhile, because the pressure of the liquid medicine in the second cavity 1012 is gradually reduced, the pressure of the liquid medicine acting on the pushing plug 11 is smaller than the pressure of the driving part 13 acting on the pushing plug 11, the pushing plug 11 can gradually move towards the opening 102 side along the axial direction of the bottle cavity 101 under the action of the pressure difference, so that the liquid medicine in the second cavity 1012 is extruded, and continuously flows out of the opening 102.
That is, the drug storage assembly 100 provided in this embodiment utilizes the blocking portion 12 to enable the second cavity 1012 to be communicated with the external environment in the open state, so as to break the stress balance state of the push plug 11 along the two sides of the axial direction of the bottle cavity 101, and then utilizes the pressure difference of the push plug 11 along the two sides of the axial direction of the bottle cavity 101 to enable the push plug 11 to move towards the opening 102, so that the drug solution in the second cavity 1012 continuously flows out. In the whole transfusion process, a motor or screw transmission is not needed to be considered, and the necessary structure, installation space and subsequent maintenance operation are not needed to be considered, so that the whole volume, weight and manufacturing cost are reduced, and the durability is improved.
The push plug 11 is slidably sealed with the wall of the bottle cavity 101, and ensures that the first cavity 1011 and the second cavity 1012 are not communicated with each other while satisfying the axial movement of the push plug 11 along the drug storage bottle 10. Thus, the liquid medicine in the second cavity 1012 does not penetrate into the first cavity 1011.
It should be further noted that the pressure in the second cavity 1012 is greater than the pressure of the external environment, so that the medical fluid in the second cavity 1012 can flow out from the opening 102 when the plugging portion 12 is in the open state, so that the pressure in the second cavity 1012 is gradually reduced.
With continued reference to fig. 2, in some embodiments, the driving portion 13 includes an elastic member 131 disposed in the first cavity 1011, and one end of the elastic member 131 is connected to an end wall of the first cavity 1011 facing away from the opening 102, the other end of the elastic member 131 is connected to the pushing plug 11, and the elastic member 131 is configured to provide an elastic force for making the pushing plug 11 have a moving tendency toward the opening 102. Specifically, the elastic member 131 is provided to drive the pushing plug 11 to move by using elastic potential energy of the elastic member 131, so as to continuously output the liquid medicine. When the elastic member 131 is mounted in the first cavity 1011 and the second cavity 1012 stores the liquid medicine, the elastic member 131 is in a compressed state, and the elastic force generated by the elastic member 131 and the pressure of the liquid medicine are in an equilibrium state. Only when the blocking portion 12 is communicated with the external environment to promote the output of the liquid medicine in the second cavity 1012, the balance state is broken, and the elastic member 131 is gradually released to convert the elastic potential energy into the kinetic potential energy for pushing the pushing plug 11 to move.
With continued reference to fig. 2, as a preferred embodiment, the elastic member 131 is a compression spring. Two ends of the compression spring are respectively abutted against the end face of the pushing plug 11 and the cavity wall of the first cavity 1011; alternatively, hanging rings are arranged on the end face of the pushing plug 11 and the cavity wall of the first cavity 1011, and two ends of the compression spring are respectively hung on the hanging rings on the same side.
With continued reference to fig. 1, in other embodiments, the driving portion 13 includes a compressed gas 132 filled in the first cavity 1011. The blocking portion 12 has a closed state, and in the closed state, the pressure of the compressed gas 132 acting on the push plug 11 is equal to the pressure of the medical fluid acting on the push plug 11, so that the push plug 11 is kept stationary. When the cross-sectional area of the push plug 11 is constant, the pressure varies with the pressure. Specifically, the pressure of the compressed gas 132 and the pressure difference between the compressed gas 132 and the pressure in the second cavity 1012 are used to push the push plug 11. Wherein, when the compressed gas 132 is filled into the first cavity 1011, the volume of the compressed gas 132 should be ensured to be at a preset volume, so as to ensure that the compressed gas 132 in the first cavity 1011 has sufficient pressure to continuously push the push plug 11 to move when the pressure in the second cavity 1012 is reduced. The preset volume of the compressed gas 132 is related to the amount of the liquid medicine in the second cavity 1012, which can be obtained by performing a limited number of experiments according to the actual amount of the liquid medicine, and thus will not be described again. Further, because the sliding seal of the pushing plug 11 relative to the wall of the bottle cavity 101 does not interfere with the liquid medicine, the pollution of the liquid medicine caused by the compressed gas 132 is reduced, and the protection of the liquid medicine is improved. In a preferred embodiment, carbon dioxide is used as the compressed gas 132.
In yet other embodiments, the first cavity 1011 is filled with a chemical; the driving part 13 includes a gas generated by a chemical reaction of a chemical substance under a preset condition in an opened state, and a pressure of the gas acting on the push plug 11 is greater than a pressure of a chemical liquid acting on the push plug 11 to push the push plug 11 to move toward the opening 102. That is, in the present embodiment, the gas is generated after the chemical reaction by the chemical substance, and as the amount of the gas increases and expands, it acts as a motive force for pushing the push plug 11 to move. Of course, the pushing here still needs to occur when the closure portion 12 is in the open state; when the closure portion 12 is in the closed state, the push plug 11 is in the rest state, and the pressure in the first chamber 1011 is balanced with the pressure in the second chamber 1012. Among them, the chemical substance needs to be set with a preset mass in consideration that the mass of the reactant and the amount of the product are related in the chemical reaction. When it is desired to have sufficient gas generation to push the push plug 11 in motion, a certain mass of reactant (i.e., the chemical described above) is required.
For example, the first chamber 1011 is filled with a certain amount of baking soda. When the pushing plug 11 needs to be pushed, a certain mass of acetic acid is flushed into the first cavity 1011, and the acetic acid and sodium bicarbonate can react to generate carbon dioxide. In this embodiment, the end of the first cavity 1011 facing away from the second cavity 1012 is connected to a delivery tube for feeding acetic acid. When the conveying pipe is not needed to be used, the conveying pipe is in a closed state; when the acetic acid is needed to be used, the conveying pipe is opened so as to be convenient for introducing acetic acid. For another example, a certain mass of metal aluminum may be disposed in the first cavity 1011, and sodium hydroxide and water may be introduced through a delivery pipe during use to generate hydrogen. At this time, the glass tube is used as the conveying tube.
With continued reference to fig. 1 and 2, in some embodiments, the drug storage bottle 10 is provided with an opening 103 on a side opposite the opening 102. The drug storage assembly 100 further includes a tail plug 14, the tail plug 14 being removably disposed at the opening 103 of the drug storage bottle 10. The blocking part 12 comprises a blocking plug 121, and the blocking plug 121 is plugged at the opening 102 of the medicine storage bottle 10. In the open state, the occlusion plug 121 is configured to be pierced by the infusion needle 20. Specifically, the opening 103 is provided to facilitate filling of the medicine liquid, the pushing plug 11, and the elastic member 131, the compressed gas 132, or the chemical substance for assisting in pushing the pushing plug 11 into the cavity 101 of the medicine storage bottle 10. After the above structures or substances are sequentially installed in place, the opening 103 is closed by the tail plug 14. Such an arrangement not only protects the structure or substance but also ensures that the first cavity 1011 and the second cavity 1012 remain balanced in the initial state. Wherein it is necessary to ensure that the closure 12 is in a closed state when the above-described structure and substance are being filled.
Further, the sealing plug 121 adopts a rubber plug or a silica gel plug, has soft texture and high friction, ensures the sealing connection between the sealing plug 121 and the opening 102, and is convenient for the infusion needle 20 to pierce.
With continued reference to fig. 1 and 2, in some embodiments, the drug storage assembly 100 further includes a distance sensor 15, where the distance sensor 15 has a transmitting end 151 and a receiving end 152, and the transmitting end 151 is disposed at an end surface of the tail plug 14 facing the push plug 11, and the receiving end 152 is disposed at an end surface of the push plug 11 facing the tail plug 14. Specifically, the moving distance of the push plug 11 can be detected by the distance sensor 15 so as to record the injection dose. In other embodiments, the transmitting end 151 of the distance sensor 15 is disposed at an end face of the push plug 11 facing the tail plug 14, and the receiving end 152 thereof is disposed at an end face of the tail plug 14 facing the push plug 11.
With continued reference to fig. 1 and 2, in a preferred embodiment, the medicine storage bottle 10 includes a main body and a neck 104 connected to the main body, the bottle cavity 101 is disposed in the main body, the opening 102 is disposed at an end of the neck 104 away from the main body, the neck 104 is provided with a liquid outlet channel communicating the second cavity 1012 and the opening 102, and a radial dimension of the neck 104 is smaller than a radial dimension of the bottle cavity 101. Specifically, the neck 104 is configured to form a tapered structure on the drug storage bottle 10, so as to increase the flow rate of the liquid medicine through the liquid outlet channel through radial variation of the tapered structure relative to the main body. The liquid outlet channel comprises the tapered section and the horizontal section, the diameter of the horizontal section is the same as the minimum diameter of the tapered section, and the horizontal section is arranged so as to stabilize the liquid medicine flow rate.
Fig. 5 is a schematic view of a medical fluid infusion device according to an embodiment of the present invention; fig. 6 is a cross-sectional view of A-A in fig. 5. Referring to fig. 5 and 6, a further embodiment of the present invention provides a drug infusion device 1000, which includes the drug storage assembly 100 and the needle assembly 200 disposed on a side of the plugging portion 12 away from the pushing plug 11, wherein the needle assembly 200 includes an infusion needle 20, and a liquid inlet end of the infusion needle 20 can pierce the plugging portion 12 and communicate with the second cavity 1012, so that a pressure difference is generated along two axial sides of the bottle cavity 101 by the pushing plug 11, and the pushing plug 11 can move towards the opening 102 under the action of the pressure difference, so as to output the drug from a liquid outlet end of the infusion needle 20. In particular, the needle assembly 200 is configured to facilitate communication of the second cavity 1012 with the external environment for infusion of the medical fluid. Moreover, because of the plugging plug 121 on the medicine storage bottle 10, the needle assembly 200 is convenient for the infusion needle 20 to penetrate, so that the second cavity 1012 is communicated with the external environment through the infusion needle 20 to break the pressure balance of the second cavity 1012, and the infusion of the medicine liquid is realized. The specific structure of needle assembly 200 is described in detail below.
FIG. 3 is a cross-sectional view of a needle assembly of a medical fluid infusion device according to an embodiment of the present invention; fig. 4 is a partial schematic view of a needle assembly of a medical fluid infusion device according to an embodiment of the present invention. Referring to fig. 3-6, in some embodiments, the needle assembly 200 further includes a hub 21 and a driver 22 mounted to the hub 21. Wherein the needle holder 21 has an assembly hole 210 for passing through the infusion needle 20, the driving member 22 is configured to drive the infusion needle 20 to move relative to the needle holder 21 in the axial direction of the infusion needle 20 so as to communicate or block the infusion channel 202 with the second cavity 1012. In particular, the provision of the hub 21 not only facilitates the installation of the infusion needle 20, but also facilitates the assembly of the needle assembly 200 with respect to the drug storage assembly 100. The driver 22 is provided for driving the infusion needle 20 to move axially with respect to the needle holder 21 in a direction that is sufficient to pierce the seal 121 such that the infusion channel 202 is in fluid communication with the second cavity 1012, or to withdraw the seal 121 such that the infusion channel 202 is blocked (i.e., not in communication) with the second cavity 1012.
That is, in the present embodiment, the movement of the infusion needle 20 relative to the occlusion 121 is accomplished with the drive member 22, which drive member 22 is controllable by the controller to satisfy the electric drive control. Further, the driving member 22 is driven by piezoelectric ceramics. Among them, piezoelectric ceramics are a class of electronic ceramic materials having piezoelectric properties, which can be adapted to stretch and contract according to applied forward and reverse electric fields. Thus, the driving of the infusion needle 20 is achieved by the extension and contraction of the piezoelectric ceramic; for example, when the infusion channel 202 of the infusion needle 20 is required to communicate with the second cavity 1012, the piezoelectric ceramic stretches to drive the infusion needle 20 to move toward the second cavity 1012 side; when it is desired to block the infusion channel 202 of the infusion needle 20 from the second cavity 1012, the piezoelectric ceramic contracts to drive the infusion needle 20 to move toward the side facing away from the second cavity 1012. Still further, the needle holder 21 is configured with an assembly hole 210 penetrating in its own axial direction for penetrating the infusion needle 20. The needle seat 21 may be made of rubber or silica gel, so that the infusion needle 20 can move relative to the needle seat 21, and sealing between the hole wall of the assembly hole 210 and the outer side wall of the infusion needle 20 can be ensured.
In other embodiments, the driver 22 employs springs supported by memory wires; alternatively, the driving member 22 may be a micro cylinder.
It should be noted that, no matter how the infusion needle 20 moves, one end of the infusion needle 20 is always located in the external environment, that is, one port of the infusion channel 202 needs to be in communication with the external environment.
As a preferred embodiment, as shown in fig. 3, 6, 7 and 8, the number of driving members 22 is two, and the two driving members 22 are respectively disposed at two sides of the needle seat 21 along the axial direction of the infusion needle 20; both driving members 22 are capable of extending or retracting in the axial direction of the infusion needle 20; and, when one of the driving members 22 is used to drive the infusion needle 20 into the second cavity 1012, the other driving member 22 is used to drive the infusion needle 20 out of the second cavity 1012. Specifically, by providing two driving members 22, the driving stability of the infusion needle 20 is improved. Two driving members 22 are exemplified as the first driving member 221 and the second driving member 222, respectively.
With continued reference to fig. 6-8, the first driving member 221 and the second driving member 222 are respectively disposed at two sides of the needle seat 21 along the axial direction thereof, and are both connected to the infusion needle 20, a gap exists between the first driving member 221 and the blocking plug 121, and a side of the second driving member 222 facing away from the needle seat 21 is connected to a fixing structure. The tail of the infusion needle 20 is inserted into the stopper 121 to accommodate the installation of the needle assembly 200 relative to the drug storage assembly 100, as shown in fig. 8, which is the initial state of the infusion needle 20. As shown in fig. 6, when the infusion channel 202 of the infusion needle 20 is required to be communicated with the second cavity 1012, the second driving member 222 is controlled to be extended, and the second driving member 222 is extended leftwards due to the gap between the first driving member 221 and the plugging plug 121 so as to drive the infusion needle 20 to move leftwards; as shown in fig. 7, when the infusion channel 202 of the infusion needle 20 is required to be blocked from the second cavity 1012, the second driving member 222 is controlled to be contracted, and the first driving member 221 is controlled to be extended, and since the second driving member 222 is contracted, a space is provided on the right side of the first driving member 221, and the first driving member 221 is extended rightward to drive the infusion needle 20 to move rightward.
When the infusion needle 20 is in the initial state, there may be no gap between the first driving member 221 and the stopper 121, and when there is no gap between the first driving member 221 and the stopper, if the infusion channel 202 of the infusion needle 20 needs to be communicated with the second cavity 1012, the first driving member 221 is controlled to be contracted, and the second driving member 222 is controlled to be expanded, and since the first driving member 221 is contracted, a space is provided on the left side of the second driving member 222, and the second driving member 222 is expanded to the left side to drive the infusion needle 20 to move left.
With continued reference to fig. 3, 4, 6, 7 and 8, in actual use, the infusion needle 20 is configured with a notch 201, and the notch 201 communicates with the infusion channel 202 of the infusion needle 20 and serves as the fluid inlet end of the infusion channel 202. Specifically, the notch 201 is disposed on a side wall of the infusion needle 20 near one end of the second cavity 1012 and communicates with the infusion channel 202. When the medical fluid infusion device 1000 is not in use, the notch 201 on the infusion needle 20 is positioned inside the sealing plug 121; when in use, the infusion needle 20 is moved to the notch 201 to communicate with the second cavity 1012. Wherein the end of the infusion needle 20 facing away from the second cavity 1012 can be used to attach an infusion tube during actual use.
Fig. 9 is a schematic diagram of a medical fluid infusion system according to an embodiment of the present invention. Referring to fig. 9, a medical fluid infusion system is provided according to still another embodiment of the present invention, which includes the medical fluid infusion device 1000 described above, and further includes a control module 2000 and a power supply 3000, wherein the power supply 3000 is electrically connected to the control module 2000, and the distance sensor 15 and the two driving members 22 in the medical fluid infusion device 1000 are electrically connected to the control module 2000. The power supply 3000 is used for supplying power to the whole system, and the control module 2000 can control the driving member 22 to act according to the distance signal transmitted by the distance sensor 15. Specifically, when the distance sensor 15 detects that the push plug 11 moves to the target position, it represents the target dosage of the liquid medicine output in the second cavity 1012. At this time, the control module 2000 receives the distance information transmitted by the distance sensor 15, and sends an instruction to the driving member 22 after processing and analysis, so that the first driving member 221 is extended and the second driving member 222 is contracted, thereby moving the infusion needle 20 towards the side away from the second cavity 1012, so as to cut off the communication between the infusion channel 202 and the second cavity 1012, and stop the injection.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (11)

1. A drug storage assembly, characterized in that the drug storage assembly (100) comprises:
a drug storage bottle (10) comprising a bottle cavity (101) and an opening (102) communicating with the bottle cavity (101);
a push plug (11) provided in the bottle chamber (101) to divide the bottle chamber (101) into a first chamber (1011) and a second chamber (1012) communicating with the opening (102); the second cavity (1012) is used for storing liquid medicine;
a driving part (13) accommodated in the first cavity (1011); and
a blocking part (12) arranged at an opening (102) of the medicine storage bottle (10);
wherein the blocking portion (12) has an open state in which the second cavity (1012) is capable of communicating with the outside, and the push plug (11) is configured to move toward the opening (102) of the medicine storage bottle (10) in the axial direction of the bottle cavity (101) in response to a pressure difference between the driving portion (13) and the medicine liquid acting on the push plug (11).
2. The drug storage assembly according to claim 1, wherein the driving part (13) comprises an elastic member (131) arranged in the first cavity (1011), and one end of the elastic member (131) is connected to a cavity wall at one end of the first cavity (1011) facing away from the opening (102), and the other end of the elastic member (131) is connected to the push plug (11);
the elastic member (131) is for providing an elastic force that causes the push plug (11) to have a tendency to move toward the opening (102).
3. A drug storage assembly according to claim 1, wherein the drive portion (13) comprises a compressed gas (132) filled in the first cavity (1011); the blocking part (12) has a closed state in which the pressure of the compressed gas (132) acting on the push plug (11) is equal to the pressure of the medical fluid acting on the push plug (11) to keep the push plug (11) stationary; or alternatively;
the first cavity (1011) is filled with a chemical substance, and the driving part (13) comprises a gas generated by chemical reaction of the chemical substance under a preset condition in an opening state, and the pressure of the gas acting on the pushing plug (11) is larger than the pressure of the liquid medicine acting on the pushing plug (11) so as to push the pushing plug (11) to move towards the opening (102).
4. A drug storage assembly according to claim 2 or 3, characterized in that the end of the drug storage bottle (10) opposite to the opening (102) is provided with an opening (103);
the medicine storage assembly (100) further comprises a tail plug (14), and the tail plug (14) is detachably arranged at the opening (103) of the medicine storage bottle (10);
the blocking part (12) comprises a blocking plug (121), and the blocking plug (121) is plugged at an opening (102) of the medicine storage bottle (10); in the open state, the occlusion plug (121) is configured to be pierced by an infusion needle (20).
5. The drug storage assembly of claim 4, wherein the drug storage assembly (100) further comprises a distance sensor (15), the distance sensor (15) having a transmitting end (151) and a receiving end (152);
the transmitting end (151) is arranged at one of the tail plug (14) and the pushing plug (11), and the receiving end (152) is arranged at the other of the tail plug (14) and the pushing plug (11).
6. The drug storage assembly of claim 1, wherein the drug storage bottle (10) comprises:
a main body portion to which the bottle chamber (101) is provided; and
a neck (104), one end of which is connected with the main body part, the opening (102) is arranged at one end of the neck (104) far away from the main body part, and the neck (104) is provided with a liquid outlet channel which is communicated with the second cavity (1012) and the opening (102);
the radial dimension of the neck (104) is smaller than the radial dimension of the bottle cavity (101).
7. A medical fluid infusion device, characterized in that the medical fluid infusion device (1000) comprises:
the drug storage assembly (100) of any one of claim 1 to 6,
a needle assembly (200) located on a side of the closure portion (12) facing away from the push plug (11); the needle head assembly (200) comprises an infusion needle (20), a liquid inlet end of the infusion needle (20) can penetrate through the blocking part (12) and is communicated with the second cavity (1012), so that the pushing plug (11) generates pressure differences along the two axial sides of the bottle cavity (101), and the pushing plug (11) can move towards the opening (102) under the action of the pressure differences so as to output liquid medicine from a liquid outlet end of the infusion needle (20).
8. The medical fluid infusion device of claim 7, wherein the needle assembly (200) further comprises a hub (21) and a driver (22) mounted to the hub (21);
the needle seat (21) is provided with an assembly hole (210) for penetrating the infusion needle (20); the driver (22) is configured to drive the infusion needle (20) relative to the needle hub (21) along an axial direction of the infusion needle (20) to place the fluid inlet end of the infusion needle (20) in fluid communication with or blocked from the second cavity (1012).
9. The liquid medicine infusion device according to claim 8, wherein the number of the driving members (22) is two, and the two driving members (22) are respectively arranged at both sides of the needle seat (21) along the axial direction of the infusion needle (20);
both driving parts (22) can extend or retract along the axial direction of the infusion needle (20), one driving part (22) is used for driving the infusion needle (20) to extend into the second cavity (1012), and the other driving part (22) is used for driving the infusion needle (20) to withdraw from the second cavity (1012).
10. The medical fluid infusion device according to claim 7, wherein the infusion needle (20) is configured with a notch (201), and the notch (201) communicates with an infusion channel (202) of the infusion needle (20) and serves as a fluid inlet end of the infusion channel (202).
11. A medical fluid infusion system, the medical fluid infusion system comprising:
the medical fluid infusion device of claim 7,
the control module (2000) is electrically connected with the liquid medicine infusion device (1000).
CN202210711697.8A 2022-06-22 2022-06-22 Medicine storage component, medicine liquid infusion device and medicine liquid infusion system Pending CN117298377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210711697.8A CN117298377A (en) 2022-06-22 2022-06-22 Medicine storage component, medicine liquid infusion device and medicine liquid infusion system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210711697.8A CN117298377A (en) 2022-06-22 2022-06-22 Medicine storage component, medicine liquid infusion device and medicine liquid infusion system

Publications (1)

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CN117298377A true CN117298377A (en) 2023-12-29

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CN202210711697.8A Pending CN117298377A (en) 2022-06-22 2022-06-22 Medicine storage component, medicine liquid infusion device and medicine liquid infusion system

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Country Link
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