CN114984374A - Syringe auxiliary device and injection system - Google Patents

Syringe auxiliary device and injection system Download PDF

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Publication number
CN114984374A
CN114984374A CN202210634895.9A CN202210634895A CN114984374A CN 114984374 A CN114984374 A CN 114984374A CN 202210634895 A CN202210634895 A CN 202210634895A CN 114984374 A CN114984374 A CN 114984374A
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CN
China
Prior art keywords
injection
ratchet
piece
driving
way
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Pending
Application number
CN202210634895.9A
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Chinese (zh)
Inventor
刘文菁
夏智慧
熊文有
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Suzhou Meichuang Medical Technology Co ltd
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Suzhou Meichuang Medical Technology Co ltd
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Priority to CN202210634895.9A priority Critical patent/CN114984374A/en
Publication of CN114984374A publication Critical patent/CN114984374A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • 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
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • 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
    • A61M5/31535—Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod

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

Abstract

The invention provides an injector auxiliary device and an injection system, wherein the injector auxiliary device comprises a shell, an injection piece, an intermediate piece and a pressure-receiving piece, the injection piece comprises a one-way driving force-receiving part and an injection part, the intermediate piece comprises a one-way driving part, and the one-way driving part is connected with the one-way driving force-receiving part; the pressure receiving piece comprises a handheld part, a pressure receiving driving part and an elastic part, the handheld part is rotatably arranged on the shell, the pressure receiving driving part is connected with the one-way driving part, one end of the elastic part is connected with the shell, and the other end of the elastic part is connected with the handheld part; wherein, receive handheld portion on the piece and have under the exogenic action, drive pressurized drive portion drives one-way drive portion and one-way drive forced part synchronous motion to drive the injection state of injecting the portion to the motion of first direction, behind the injection state, pressurized drive portion has under the drive of elastic force, drives one-way drive portion and one-way drive forced part disconnection, only drives the reset state of one-way drive portion to the motion of second direction.

Description

Syringe auxiliary device and injection system
Technical Field
The invention relates to the technical field of medical equipment, in particular to an injector auxiliary device and an injection system.
Background
The injector mainly comprises a needle tube, a needle head and a piston rod. When in use, the piston rod is moved to generate pressure change in the needle tube so as to draw or inject the liquid medicine. However, the syringes have different sizes, so that the syringes with different sizes have poor use experience. In order to solve the problem, injection guns are invented, which are similar to "handguns" and have better use experience, and the injection guns also adopt a mode of piston rod movement to realize injection and liquid extraction.
In the prior art, an injector auxiliary device is disclosed, which comprises a device body, a rotating arm, a gear, a rack and a return spring; the injection device is characterized in that an injector is connected above the rack, the rack is slidably mounted in the body and meshed with the gear, the rotating arm is connected with the gear, and when injection is performed, the gear is driven to rotate by pressing the rotating arm, so that the rack is driven to move, and the injector is driven to complete injection.
However, in the above-mentioned syringe auxiliary device, after a single injection is completed, the rotating arm drives the rack to return to the initial position when being rotated under the action of the return spring, and thus, multiple continuous injections cannot be realized.
Disclosure of Invention
Therefore, the present invention is to solve the technical problem that in the syringe auxiliary device in the prior art, after a single injection is completed, the rack is driven to return to the initial position when the rotating arm is rotated under the action of the return spring, so that multiple continuous injections cannot be realized.
To this end, the present invention provides a syringe accessory device comprising:
a housing;
the injection part is arranged in the shell and comprises a one-way driving stress part and an injection part, and the injection part is suitable for being connected with an injector;
the middleware is arranged in the shell and comprises a one-way driving part, and the one-way driving part is connected with the one-way driving stress part;
the compression piece comprises a handheld part, a compression driving part and an elastic part, the handheld part is rotatably arranged on the shell, the compression driving part is connected with the one-way driving part, one end of the elastic part is connected with the shell, and the other end of the elastic part is connected with the handheld part;
the handheld part on the pressed part drives the pressed driving part to drive the one-way driving part and the one-way driving stress part to synchronously move under the action of external force so as to drive the injection part to move towards a first direction in an injection state, and the elastic part has elastic force for driving the pressed driving part to move towards a near end in the injection state; after the injection state, the pressed driving part is driven by the elastic force to drive the one-way driving part to be disconnected with the one-way driving stress part, so that the one-way driving stress part is in an injection position in the injection state and drives the one-way driving part to move to a reset state in a second direction, and the first direction is opposite to the second direction.
Optionally, the unidirectional driving stressed portion includes a plurality of first ratchet working surfaces and first ratchet back surfaces which are connected to each other, the unidirectional driving portion includes a plurality of second ratchet working surfaces and second ratchet back surfaces which are connected to each other, an included angle between an extending direction from a tooth root to an tooth top on the second ratchet working surfaces and the first direction is smaller than or equal to 90 degrees, an included angle between an extending direction from a tooth root to an tooth top on the first ratchet working surfaces and the first direction is larger than or equal to 90 degrees, an included angle between an extending direction from a tooth root to an tooth top on the second ratchet back surfaces and the second direction is larger than 90 degrees, and an included angle between an extending direction from a tooth root to an tooth top on the first ratchet back surfaces and the second direction is smaller than 90 degrees;
under the injected state, the second ratchet working surface is abutted against the first ratchet working surface so as to drive the second ratchet working surface and the first ratchet working surface to synchronously move;
in the reset state, the second ratchet back surface slides on the first ratchet back surface so that the first ratchet back surface is still in the injection position in the injection state.
Optionally, the unidirectional driving force-bearing part and the unidirectional driving part are both ratchet bars or
The unidirectional driving stress part is a ratchet wheel, and the unidirectional driving part is a ratchet bar.
Optionally, the middle piece further comprises a reset portion, the reset portion slides on the back surface of the first ratchet along a second direction, and the reset portion has a first elastic force driving the one-way driving portion to move towards the direction close to the one-way driving force receiving portion.
Optionally, the injection component further comprises a limiting part, wherein the limiting part comprises a first limiting part, and the first limiting part is connected with a guide rail part on the injection component so as to limit the injection component.
Optionally, the injection device further comprises a resetting piece, the resetting piece is arranged on one side of the middle piece, and the resetting piece is in a disengagement state of driving the middle piece to be disengaged from the injection piece under the action of external force.
Optionally, the pushing component includes a pull-back portion, the pull-back portion penetrates through the side wall of the housing and extends to the outside of the housing, and in the disengaged state, the pull-back portion has a pull-back state in which the pushing component is driven to move in the second direction under the action of an external force.
Optionally, after the pull-back state, the reset portion has a second elastic force for driving the one-way driving portion to move toward the one-way driving force-receiving portion.
Optionally, the adjusting device further comprises an adjusting piece which can rotate around a rotation center relative to the shell, and the adjusting piece comprises at least one adjusting part;
the compression piece further comprises a limiting part, and before the reset state, the limiting part is suitable for being abutted to the adjusting part so as to limit the synchronous movement distance of the one-way driving part and the one-way driving stress part in the injection state.
Optionally, the adjusting member includes a first adjusting portion and a second adjusting portion, a first distance is from an outer wall of the first adjusting portion to the rotation center, a second distance is from an outer wall of the second adjusting portion to the rotation center, and the first distance is greater than the second distance.
An injection system comprises an injector and an injector auxiliary device, wherein the injector auxiliary device is the injector auxiliary device, and the injector is connected with the injection part.
The technical scheme provided by the invention has the following advantages:
the invention provides an injector auxiliary device which comprises a shell, an injection part, an intermediate part and a pressure-receiving part, wherein the injection part is arranged in the shell and comprises a one-way driving stress part and an injection part, and the injection part is suitable for being connected with an injector; the middleware is arranged in the shell and comprises a one-way driving part, and the one-way driving part is connected with the one-way driving stress part; the compression piece comprises a handheld part, a compression driving part and an elastic part, the handheld part is rotatably arranged on the shell, the compression driving part is connected with the one-way driving part, one end of the elastic part is connected with the shell, and the other end of the elastic part is connected with the handheld part; the handheld part on the pressed part drives the pressed driving part to drive the one-way driving part and the one-way driving stress part to synchronously move under the action of external force so as to drive the injection part to move towards a first direction in an injection state, and the elastic part has elastic force for driving the pressed driving part to move towards a near end in the injection state; after the injection state, the pressed driving part is driven by the elastic force to drive the one-way driving part to be disconnected with the one-way driving stress part, so that the one-way driving stress part is in an injection position in the injection state and drives the one-way driving part to move to a reset state in a second direction, and the first direction is opposite to the second direction.
The syringe auxiliary device of this structure, when injecting, hold the casing outside through hand, press the handheld portion on the pressure piece, handheld portion and casing rotate relatively, drive the motion of pressurized drive portion, thereby drive the one-way drive portion synchronous motion who is connected with pressurized drive portion, one-way drive portion drives the one-way drive atress portion synchronous motion rather than being connected, thereby drive the portion of injecting and remove along the first direction, in order to realize injecting the portion and being connected the syringe and inject. After injection is completed, the hand part loosens the hand-holding part, the hand-holding part moves to the initial position under the driving of the elastic force on the elastic part, so as to drive the one-way driving part to move to the second direction, wherein the second direction is opposite to the first direction, because the one-way driving part can only drive the one-way driving stress part to move in one direction along the first direction, the pressure-bearing driving part drives the one-way driving part to be disconnected with the one-way driving stress part, so that the one-way driving stress part is positioned at the injection position under the injection state, and only drives the one-way driving part to move to the second direction, then the hand-holding part is continuously pressed, the injection steps are continuously repeated, and thus multiple injections of a single injector can be realized, and the condition that after a single injection is completed, the rotating arm can drive the rack to return to the initial position under the action of the reset spring in the prior art is avoided, multiple continuous injections cannot be achieved.
2. The invention provides an auxiliary device of an injector, wherein a one-way driving stress part comprises a plurality of first ratchet working surfaces and first ratchet back surfaces which are connected and arranged, a one-way driving part comprises a plurality of second ratchet working surfaces and second ratchet back surfaces which are connected and arranged, an included angle between the extending direction from a tooth root to an tooth top on the second ratchet working surfaces and the first direction is smaller than or equal to 90 degrees, an included angle between the extending direction from the tooth root to the tooth top on the first ratchet working surfaces and the first direction is larger than or equal to 90 degrees, an included angle between the extending direction from the tooth root to the tooth top on the second ratchet back surfaces and the second direction is larger than 90 degrees, and an included angle between the extending direction from the tooth root to the tooth top on the first ratchet back surfaces and the second direction is smaller than 90 degrees; under the injected state, the second ratchet working surface is abutted against the first ratchet working surface so as to drive the second ratchet working surface and the first ratchet working surface to synchronously move; in the reset state, the second ratchet back surface slides on the first ratchet back surface so that the first ratchet back surface is still in the injection position in the injection state.
The injector auxiliary device with the structure is provided with a first ratchet working face, a first ratchet back face, a second ratchet working face and a second ratchet back face, wherein the included angle between the extending direction from the tooth root to the tooth top and the first direction on the second ratchet working face is smaller than or equal to 90 degrees, the included angle between the extending direction from the tooth root to the tooth top and the first direction on the first ratchet working face is larger than or equal to 90 degrees, the second ratchet working face can be abutted against the first ratchet working face in an injection state, so that the one-way driving part and the one-way driving stress part can be driven to synchronously move under the drive of the pressed driving part to realize injection,
the included angle between the extending direction from the tooth root to the tooth top on the back surface of the second ratchet and the second direction is larger than 90 degrees, and the included angle between the extending direction from the tooth root to the tooth top on the back surface of the first ratchet and the second direction is smaller than 90 degrees, so that in a reset state, when the one-way driving part is driven by the pressure-bearing driving part to move towards the second direction, the back surface of the second ratchet can slide on the back surface of the first ratchet without driving the back surface of the first ratchet to move, namely, the one-way driving part only drives the one-way driving part to move, and the one-way driving stress part is still at an injection position in an injection state.
3. The invention provides an injector auxiliary device, which further comprises a limiting piece, wherein the limiting piece comprises a first limiting part, and the first limiting part is connected with a guide rail part on an injection component so as to limit the injection component.
The syringe auxiliary device of this structure, through being equipped with the locating part, after the injection state, when the compression piece drives the intermediate member and removes to the second direction, in order to prevent that the in-process that the intermediate member removed to the second direction can drive the piece of injecting and remove, consequently with the first spacing portion on the locating part with inject the guide rail portion on the piece and be connected, and seted up the spout in the first spacing portion, spout and guide rail portion interference fit, thereby can prevent through frictional force that the piece is injected to the second direction removal under the drive of intermediate member to the thrust.
4. The injector auxiliary device further comprises a resetting piece, wherein the resetting piece is arranged on one side of the middle piece, and the resetting piece is in a disengagement state of driving the middle piece to be disengaged from the injection piece under the action of external force. The push injection part comprises a pull-back part, the pull-back part penetrates through the side wall of the shell and extends to the outer side of the shell, and the pull-back part is in a pull-back state of driving the push injection part to move towards the second direction under the action of external force in the separation state.
The syringe auxiliary device of this structure resets through being equipped with the piece that resets, the piece that resets is located middleware one side, after accomplishing a lot of injections, through pressing the piece that resets, the piece that resets drive middleware removes for the one-way drive portion on the middleware breaks away from the contact with the one-way drive atress portion on injecting the piece, pushes back the pull portion on injecting the piece through the pulling this moment, will push the piece and pull to the second direction, thereby will inject the piece and remove the position at place when injecting for the first time, prepare for subsequent injection.
5. The invention provides an auxiliary device of an injector, which further comprises an adjusting piece, wherein the adjusting piece can rotate around a rotation center relative to a shell, the adjusting piece comprises at least one adjusting part, the pressed piece further comprises a limiting part, and before the reset state, the limiting part is suitable for being abutted against the adjusting part so as to limit the synchronous movement distance of the one-way driving part and the one-way driving stressed part in the injection state.
The syringe auxiliary device of this structure, through being equipped with the regulating part, when injecting, through rotating the regulating part to adjust the outer wall of regulating part to the distance of spacing portion, in order to restrict in the injection state the synchronous movement distance of one-way drive portion and one-way drive atress portion, thereby can restrict the removal distance of injecting the portion on injecting the piece, thereby can adjust and inject pole single removal distance in the syringe that the portion is connected with injecting, in order to realize quantitative injection.
6. The invention provides an auxiliary device for a syringe, which comprises an adjusting piece and a second adjusting piece, wherein the outer wall of the first adjusting piece is a first distance from the outer wall of the first adjusting piece to the rotating center, the outer wall of the second adjusting piece is a second distance from the outer wall of the second adjusting piece to the rotating center, and the first distance is larger than the second distance.
The injector auxiliary device with the structure comprises a first adjusting part and a second adjusting part, wherein the first distance from the outer wall of the first adjusting part to the rotating center is larger than the second distance from the outer wall of the second adjusting part to the rotating center, namely when the outer wall of the first adjusting part is contacted with the outer wall of the limiting part, the injection part on the injection part can complete injection of a first dosage to the injector, when the outer wall of the second adjusting part is contacted with the outer wall of the limiting part, the injection part on the injection part can complete injection of a second dosage to the injector, and the first distance is larger than the second distance, so that the moving stroke of the injection part under the first distance is smaller than the moving stroke of the injection part under the second distance, therefore, the first injection dosage is smaller than the second injection dosage, and adjustment of single injection dosage can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a syringe accessory device provided in an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of a syringe assist device provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of the construction of the plunger, intermediate member and pressure receiving member of the syringe accessory device provided in an embodiment of the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 3 at circle A;
FIG. 5 is a schematic structural view of an intermediate member in the syringe accessory device provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a limiting member, a resetting member and an injecting member in the auxiliary device of the injector provided in the embodiment of the present invention;
FIG. 7 is a schematic view of a position-limiting element of the syringe accessory device according to an embodiment of the present invention;
FIG. 8 is a schematic view of the structures of an adjusting member and a pressure receiving member in the syringe accessory device provided in the embodiment of the present invention;
description of reference numerals:
1-a shell;
2-injection piece; 21-one-way driving force bearing part; 211-a first ratchet working surface; 212-first ratchet back; 22-a bolus section; 23-a rail portion; 24-a pull back portion;
3-middleware; 31-one-way driving part; 311-second ratchet working face; 312-a second ratchet back; 32-a reset portion; 33-a connecting portion;
4-a pressure piece; 41-a hand-held part; 42-a pressure driven part; 43-an elastic portion; 44-a limiting part;
5-a limiting part; 51-a first stop;
6-a reset piece;
7-an adjusting part; 71-a first adjustment; 72-second adjustment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
This embodiment provides a syringe auxiliary device, as shown in fig. 1 to 8, syringe auxiliary device includes casing 1, push injection piece 2, intermediate part 3, receive piece 4, locating part 5, reset piece 6 and regulating part 7, wherein, as shown in fig. 2, push injection piece 2 locates inside casing 1, push injection piece 2 is connected with receiving piece 4 through intermediate part 3, receive the rotatable connection of piece 4 on casing 1, intermediate part 3 one side is connected with reset piece 6, push injection piece 2's one end is connected with locating part 5, regulating part 7 is connected with casing 1 and is established in one side that receives piece 4.
As shown in fig. 2 and 3, the injection piece 2 includes the one-way driving stress part 21 and the injection part 22, the middleware 3 includes the one-way driving part 31, the one-way driving part 31 is connected with the one-way driving stress part 21, the pressed piece 4 includes the handheld part 41, the pressed driving part 42 and the elastic part 43, the handheld part 41 is rotatably installed on the housing 1, the pressed driving part 42 is connected with the one-way driving part 31, one end of the elastic part 43 is connected with the housing 1, and the other end of the elastic part 43 is connected with the handheld part 41.
The handheld portion 41 on the pressure receiving member 4 drives the pressure receiving driving portion 42 to drive the unidirectional driving portion 31 and the unidirectional driving force receiving portion 21 to move synchronously under the action of an external force, so as to drive the bolus injection portion 22 to move towards the first direction in the injection state, and the elastic portion 43 has an elastic force for driving the pressure receiving driving portion 42 to move towards the proximal end in the injection state; after the injection state, the pressed driving portion 42 drives the one-way driving portion 31 to disconnect from the one-way driving force receiving portion 21 under the driving of the elastic force, so that the one-way driving force receiving portion 21 is located at the injection position in the injection state, and drives the one-way driving portion 31 to move to the second direction, and the first direction is opposite to the second direction. As shown in fig. 2, the first direction is a negative direction of the X axis, and the second direction is a positive direction of the X axis.
When injecting, as shown in fig. 2 and fig. 3, hold the casing 1 outside through the hand, press the handheld portion 41 on the pressurized piece 4, handheld portion 41 carries out anticlockwise rotation around the O point, drive the motion of pressurized drive portion 42, thereby drive the one-way drive portion 31 synchronous motion who is connected with pressurized drive portion 42, one-way drive portion 31 drives the one-way drive atress portion 21 synchronous motion rather than being connected, thereby drive and inject portion 22 and remove along first direction, the negative direction of X axle removes promptly, in order to realize carrying out the single injection to being connected the syringe with injecting portion 22. After the single injection is completed, the hand releases the hand-holding part 41, the hand-holding part 41 rotates clockwise around the point O under the driving of the elastic force on the elastic part 43, so as to drive the one-way driving part 31 to move towards the second direction, i.e. the positive direction of the X axis. Because the unidirectional driving part 31 can only drive the unidirectional driving stress part 21 to move unidirectionally along the first direction, the pressure-bearing driving part 42 drives the unidirectional driving part 31 to be disconnected from the unidirectional driving stress part 21, so that the unidirectional driving stress part 21 is positioned at the injection position in the injection state, and only drives the unidirectional driving part 31 to move towards the second direction, then the handheld part 41 is continuously pressed, and the step of pressing the handheld part 41 to inject is continuously repeated, because the unidirectional driving stress part 21 is still positioned at the injection position in the injection state, the handheld part 41 is pressed again, so that the unidirectional driving stress part 21 can drive the unidirectional driving part 31 to continuously move, thereby realizing multiple injections of a single injector, and avoiding that the rack is driven to return to the initial position when the rotating arm rotates under the action of the reset spring after the single injection is finished in the prior art, multiple continuous injections cannot be achieved.
As shown in fig. 4 and 5, the unidirectional driving force receiving portion 21 includes a plurality of first ratchet working surfaces 211 and first ratchet back surfaces 212 which are connected to each other, the unidirectional driving portion 31 includes a plurality of second ratchet working surfaces 311 and second ratchet back surfaces 312 which are connected to each other, an included angle between an extending direction from a tooth root to a tooth top on the second ratchet working surfaces 311 and the first direction is less than or equal to 90 degrees, so that in an injection state, the second ratchet working surfaces 311 can abut against the first ratchet working surfaces 211, and the unidirectional driving portion 31 and the unidirectional driving force receiving portion 21 can be driven to synchronously move under the driving of the pressed driving portion 42, thereby realizing injection;
as shown in fig. 4 and 5, an angle between the extending direction from the tooth root to the tooth tip on the first ratchet tooth working surface 211 and the first direction is greater than or equal to 90 degrees, an angle between the extending direction from the tooth root to the tooth tip on the second ratchet tooth back surface 312 and the second direction is greater than 90 degrees, and an angle between the extending direction from the tooth root to the tooth tip on the first ratchet tooth back surface 212 and the second direction is less than 90 degrees;
when the unidirectional driving portion 31 is driven by the pressed driving portion 42 to move in the second direction in the reset state, the second ratchet back 312 can slide on the first ratchet back 212 without driving the first ratchet back 212 to move, that is, the unidirectional driving portion 31 only drives the unidirectional driving portion 31 to move, and the unidirectional driving force receiving portion 21 is still in the injection position in the injection state, and when the injection is performed for the second time, the unidirectional driving portion 31 can continuously drive the unidirectional driving force receiving portion 21 to further move in the first direction, so that multiple injections are realized. Wherein, the unidirectional driving force-bearing part 21 and the unidirectional driving part 31 are both ratchet bars.
In other alternative embodiments, the unidirectional driving force receiving portion 21 is a ratchet wheel, and the unidirectional driving portion 31 is a ratchet bar.
As shown in fig. 3, the intermediate member 3 further includes a reset portion 32, one end of the reset portion 32 abuts against the one-way driving portion 31, the other end abuts against the housing 1, the second ratchet back surface 312 slides on the first ratchet back surface 212 along the second direction, and the reset portion 32 has a first elastic force for driving the one-way driving portion 31 to move toward the one-way driving force receiving portion 21. When the one-way driving portion 31 is driven by the pressed driving portion 42 to move towards the second direction, the one-way driving portion 31 can always contact with the one-way driving force receiving portion 21, and after the one-way driving portion 31 stops moving, the one-way driving portion 31 can still drive the one-way driving force receiving portion 21 to move towards the first direction at any time, so that next injection is facilitated.
In other alternative embodiments, the reset portion 32 may be a spring, one end of the spring is connected to one side of the one-way driving portion 31 close to the handheld portion 41, the other side of the spring is connected to the housing 1, and the spring can drive the one-way driving portion 31 to move towards the one-way driving force receiving portion 21.
As shown in fig. 3, a connecting portion 33 is disposed between the one-way driving portion 31 and the reset portion 32, an arc-shaped opening is disposed on a side of the connecting portion 33 close to the pressure-driven portion 42, the pressure-driven portion 42 is engaged with the arc-shaped opening and slidably connected with a sidewall of the arc-shaped opening, and when the pressure-driven portion 42 is driven by the handheld portion 41 to rotate around the point O, the pressure-driven portion 42 is slidably connected with the sidewall of the arc-shaped opening, so that the pressure-driven portion 42 can drive the connecting portion 33 to move along the X-axis direction.
As shown in fig. 2, 6 and 7, the limiting member 5 includes a first limiting portion 51, and the first limiting portion 51 is connected to the guide rail portion 23 on the injection member 2 to limit the injection member 2. Through being equipped with locating part 5, after the injection state, when the compression piece 4 drives middleware 3 and removes to the second direction, in order to prevent that the in-process that middleware 3 removed to the second direction can drive the piece of annotating 2 and remove, consequently be connected first spacing portion 51 on the locating part 5 and the guide rail portion 23 on the piece of annotating 2, and seted up the spout on the first spacing portion 51, spout and guide rail portion 23 interference fit, thereby can prevent through frictional force that the piece of annotating 2 of thrust removes to the second direction under middleware 3's drive.
As shown in fig. 2 and 6, the resetting member 6 is disposed on one side of the middle member 3, and the resetting member 6 is in a disengaged state of driving the middle member 3 to disengage from the pushing member 2 under the action of an external force. As shown in fig. 2, the pull-back portion 24 is disposed through the sidewall of the housing 1 and extends to the outside of the housing 1, and in the disengaged state, the pull-back portion 24 has a pull-back state in which the push-injection portion 22 is driven to move in the second direction by an external force. After the pull-back state, the reset portion 32 has a second elastic force for driving the one-way driving portion 31 to move toward the one-way driving force receiving portion 21.
Through being equipped with piece 6 that resets, piece 6 that resets is located 3 one sides of middleware, after accomplishing multiple injection, through pressing piece 6 that resets along the negative direction of Y axle, 6 drive middleware 3 that resets remove, make one-way drive portion 31 on the middleware 3 and the one-way drive atress portion 21 on the piece 2 of injecting out of contact, through pulling back pull portion 24 on the piece 2 of injecting, to inject piece 2 to the second direction pulling this moment, thereby with the piece 2 of injecting remove to the position of place when injecting for the first time, release piece 6 that resets, one-way drive portion 31 contacts with one-way drive atress portion 21 under the effect of second elastic force this moment, prepare for subsequent continuous injection.
As shown in fig. 2 and 8, the adjusting member 7 is rotatable about a rotation center with respect to the housing 1, and the adjusting member 7 includes an adjusting portion; the pressure receiving member 4 further includes a limiting portion 44, and before the reset state, the limiting portion 44 is adapted to abut against the adjusting portion to limit the synchronous moving distance of the unidirectional driving portion 31 and the unidirectional driving force receiving portion 21 in the injection state.
Through being equipped with the regulating part, when injecting, through rotating regulating part 7 to the outer wall of regulating part is to spacing 44's distance, with the synchronous motion distance of unidirectional drive portion 31 and unidirectional drive atress portion 21 in the restriction injection state, thereby can restrict to push the moving distance of injection portion 22 on the injection piece 2, thereby can adjust and push the single moving distance of injection rod in the syringe that is connected with injection portion 22, in order to realize the ration injection.
Specifically, in the present embodiment, as shown in fig. 8, the adjusting member 7 includes a first adjusting portion 71 and a second adjusting portion 72, the outer wall of the first adjusting portion 71 is a first distance from the rotation center, the outer wall of the second adjusting portion 72 is a second distance from the rotation center, and the first distance is greater than the second distance.
Through being equipped with first regulating part 71 and second regulating part 72, the first distance of the outer wall of first regulating part 71 to rotation center is greater than the second distance of the outer wall of second regulating part 72 to rotation center, namely when the outer wall of first regulating part 71 and the outer wall contact of spacing portion 44, the injection of first dose can be accomplished to the syringe to bolus portion 22 on bolus piece 2, when the outer wall of second regulating part 72 and the outer wall contact of spacing portion 44, the injection of second dose can be accomplished to the syringe to bolus portion 22 on bolus piece 2, because first distance is greater than the second distance, consequently, the stroke that bolus portion 22 under the first distance removed is less than the stroke that bolus portion 22 under the second distance removed, consequently, first injection dose is less than the second injection dose, consequently, can realize the regulation to single injection dose.
In other alternative embodiments, the adjusting part 7 may include an adjusting portion, and when an injection is performed, the adjusting portion abuts against a side wall of the limiting portion 44, so as to limit a synchronous moving distance of the unidirectional driving portion 31 and the unidirectional driving force-receiving portion 21 in an injection state, and thus the moving distance of the bolus portion 22 on the bolus 2 can be limited, so as to control a single injection amount.
In other alternative embodiments, the adjusting member 7 may further include three or more adjusting portions.
The syringe auxiliary device of this embodiment, when injecting, as shown in fig. 2 and fig. 3, hold the casing 1 outside through the hand, press handheld portion 41 on the pressurized piece 4, handheld portion 41 rotates with casing 1 relatively, drive the motion of pressurized drive portion 42, thereby drive the one-way drive portion 31 synchronous motion of being connected with pressurized drive portion 42, one-way drive portion 31 drives the one-way drive forced portion 21 synchronous motion rather than being connected, thereby drive bolus portion 22 and remove along first direction, in order to realize injecting to being connected the syringe with bolus portion 22. After the injection is completed, the hand part releases the handheld part 41, the handheld part 41 moves to the initial position under the driving of the elastic force on the elastic part 43, and thus the one-way driving part 31 is driven to move to the second direction;
after accomplishing many injections, through pressing reset piece 6, reset piece 6 drive middleware 3 and remove, make one-way drive portion 31 on middleware 3 and the one-way drive atress portion 21 on the piece 2 of injecting of pushing away break away from the contact, this moment through pulling back pull portion 24 on the piece 2 of injecting of pushing away, will push away the piece 2 and pull to the second direction, thereby with the position that the piece 2 of injecting of pushing away moved to the first time and is located, release reset piece 6, this moment one-way drive portion 31 contacts with one-way drive atress portion 21 under the effect of second elastic force, prepare for subsequent injection.
When needs adjust injection dosage, rotate regulating part 7 to the outer wall of adjusting part is to the distance of spacing portion, with the synchronous motion distance of unidirectional drive portion 31 and unidirectional drive atress portion 21 in the restriction injection state, thereby can restrict to push and annotate 2 and go up the moving distance of injecting portion 22, thereby can adjust and inject a pole single moving distance in the syringe that portion 22 is connected with pushing, in order to realize the ration injection.
Example 2
The present embodiment provides an injection system including a syringe and a syringe accessory device, the syringe accessory device being the syringe accessory device in embodiment 1, the syringe being connected to the bolus section 22.
According to the injection system of the embodiment, due to the adoption of the injector auxiliary device provided by the embodiment, multiple times of quantitative injection can be carried out on the same injector during injection, the injection dose can be adjusted every time, and the injection efficiency can be improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims (11)

1. A syringe accessory device, comprising:
a housing (1);
the injection device comprises an injection piece (2), wherein the injection piece (2) is arranged in a shell (1), the injection piece (2) comprises a one-way driving stress part (21) and an injection part (22), and the injection part (22) is suitable for being connected with an injector;
the middle piece (3) is arranged in the shell (1), the middle piece (3) comprises a one-way driving part (31), and the one-way driving part (31) is connected with the one-way driving stress part (21);
the compression piece (4) comprises a handheld part (41), a compression driving part (42) and an elastic part (43), the handheld part (41) is rotatably mounted on the shell (1), the compression driving part (42) is connected with the one-way driving part (31), one end of the elastic part (43) is connected with the shell (1), and the other end of the elastic part (43) is connected with the handheld part (41);
the handheld part (41) on the compression piece (4) drives the compression driving part (42) to drive the one-way driving part (31) and the one-way driving stress part (21) to synchronously move under the action of external force so as to drive the injection part (22) to move towards a first direction in an injection state, and the elastic part (43) has elastic force for driving the compression driving part (42) to move towards a near end in the injection state; after the injection state, the pressure-bearing driving part (42) drives the one-way driving part (31) to be disconnected from the one-way driving force-bearing part (21) under the driving of the elastic force, so that the one-way driving force-bearing part (21) is in an injection position in the injection state, and drives the one-way driving part (31) to move to a second direction, and the first direction is opposite to the second direction.
2. Syringe assist device according to claim 1, wherein the one-way drive force-receiving portion (21) comprises a number of first ratchet tooth faces (211) and first ratchet tooth backs (212) arranged in connection, the one-way driving part (31) comprises a plurality of second ratchet working surfaces (311) and second ratchet back surfaces (312) which are connected, the included angle between the extending direction from the tooth root to the tooth top on the second ratchet working surface (311) and the first direction is less than or equal to 90 degrees, the included angle between the extending direction from the tooth root to the tooth top on the first ratchet working surface (211) and the first direction is more than or equal to 90 degrees, the extending direction from the tooth root to the tooth top on the back surface (312) of the second ratchet is more than 90 degrees of the included angle of the second direction, the included angle between the extending direction from the tooth root to the tooth top on the back surface (212) of the first ratchet and the second direction is less than 90 degrees;
under the injected state, the second ratchet working surface (311) is abutted against the first ratchet working surface (211) so as to drive the second ratchet working surface (311) to move synchronously with the first ratchet working surface (211);
in the reset state, the second ratchet back face (312) slides over the first ratchet back face (212) such that the first ratchet back face (212) is still in the injection position in the injection state.
3. The syringe accessory device of claim 2,
the unidirectional driving force-bearing part (21) and the unidirectional driving part (31) are both ratchet bars, or
The one-way driving stress part (21) is a ratchet wheel, and the one-way driving part (31) is a ratchet bar.
4. Syringe accessory device according to claim 2, characterized in that the intermediate piece (3) further comprises a reset portion (32) slipped over the first ratchet back (212) in a second direction on the second ratchet back (312), the reset portion (32) having a first elastic force driving the unidirectional drive portion (31) to move closer to the unidirectional drive force-receiving portion (21).
5. Syringe accessory device according to any one of claims 1 to 4, characterized in that it further comprises a stop (5), said stop (5) comprising a first stop portion (51), said first stop portion (51) being connected to a guide portion (23) on the plunger (2) to stop the plunger (2).
6. Syringe assist device according to claim 4, characterized in that it also comprises a resetting element (6), said resetting element (6) being arranged on one side of said intermediate element (3), said resetting element (6) having a disengagement condition in which it drives said intermediate element (3) out of contact with said thrust element (2) under the action of an external force.
7. The syringe accessory device according to claim 6, wherein the pushing member (2) comprises a pulling portion (24), the pulling portion (24) is disposed through a side wall of the housing (1) and extends to an outside of the housing (1), and in the disengaged state, the pulling portion (24) has a pulling state in which the pushing portion (22) is driven to move in the second direction by an external force.
8. The syringe accessory device of claim 7,
after the pull-back state, the reset part (32) has a second elastic force which drives the one-way driving part (31) to move towards the direction close to the one-way driving force-bearing part (21).
9. Syringe accessory device according to claim 2 or 8,
the adjusting device further comprises an adjusting piece (7), wherein the adjusting piece (7) can rotate around a rotation center relative to the shell (1), and the adjusting piece (7) comprises at least one adjusting part;
the compression piece (4) further comprises a limiting part (44), and before the reset state, the limiting part (44) is suitable for being abutted to the adjusting part so as to limit the synchronous moving distance of the one-way driving part (31) and the one-way driving stress part (21) in the injection state.
10. Syringe accessory device according to claim 9, characterized in that the adjustment member (7) comprises a first adjustment portion (71) and a second adjustment portion (72), the outer wall of the first adjustment portion (71) being at a first distance to the centre of rotation and the outer wall of the second adjustment portion (72) being at a second distance to the centre of rotation, the first distance being greater than the second distance.
11. An injection system, characterized by comprising a syringe and a syringe accessory device, the syringe accessory device being as claimed in any one of claims 1-10, the syringe being connected to the bolus (22).
CN202210634895.9A 2022-06-06 2022-06-06 Syringe auxiliary device and injection system Pending CN114984374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210634895.9A CN114984374A (en) 2022-06-06 2022-06-06 Syringe auxiliary device and injection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210634895.9A CN114984374A (en) 2022-06-06 2022-06-06 Syringe auxiliary device and injection system

Publications (1)

Publication Number Publication Date
CN114984374A true CN114984374A (en) 2022-09-02

Family

ID=83033531

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210634895.9A Pending CN114984374A (en) 2022-06-06 2022-06-06 Syringe auxiliary device and injection system

Country Status (1)

Country Link
CN (1) CN114984374A (en)

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