CN214762655U

CN214762655U - Quantitative injector

Info

Publication number: CN214762655U
Application number: CN202120325357.2U
Authority: CN
Inventors: 陈亚坤; 刘磊
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-11-19
Anticipated expiration: 2031-02-04

Abstract

The utility model provides a quantitative injector, belonging to the technical field of medical instruments. Including shell subassembly, injection propelling movement subassembly and spacing adjusting part. The lug is connected the one end of casing, communicating pipe is connected the other end of casing, the connecting piece with communicating pipe intercommunication, the piston spare sets up the push rod with between the casing, the rotating member sets up outside one side of installation shell, the rotating member with the reduction gear is connected, adjusting bolt connects the casing with between the connecting rod, the backup pad with the other end of bracing piece is connected, limit baffle connects one side of backup pad. The utility model discloses be favorable to the flow and the speed of accurate control liquid medicine injection, reducible adverse effect because of the too fast injection of medicine causes patient's health, simultaneously also can effectually control the content of medicine extraction.

Description

Quantitative injector

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to a quantitative injector.

Background

The prior syringes are mostly manual syringes, the injection speed needs to be controlled by medical staff, but the syringes used under certain special conditions have high control requirements on the medicine flow and the speed, the control is very difficult by a mode of manually controlling the medicine flow, the flow is often unstable and has high fluctuation, and patients are easy to generate adverse reactions, for example, a frequently used 1ml syringe has a specified injection speed limiting range, the flow for injecting the medicine liquid and the speed for injecting the medicine liquid are difficult to accurately control by manual operation, the slow injection of the medicine liquid is difficult to realize, the adverse effects on the bodies of the patients caused by the too fast medicine injection are frequently generated clinically, meanwhile, the content of the medicine extracted by the prior syringes cannot be controlled when the medicine is extracted, and how to invent a quantitative syringe to improve the problems, becomes a problem that needs to be solved currently.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a quantitative injector aims at improving in the specified speed limiting range of pushing, and the flow that manual operation hardly accurate control liquid medicine was injected and the speed of liquid medicine injection take place easily because of the medicine injects the speed and causes bad influence to patient's health too fast, simultaneously because of some syringes current, can not carry out the problem controlled to the content of medicine extraction.

The utility model discloses a realize like this:

the utility model provides a quantitative injector includes shell subassembly, injection propelling movement subassembly and spacing adjusting part.

The shell subassembly includes casing, lug, communicating pipe, connecting piece and syringe needle, the lug is connected the one end of casing, communicating pipe is connected the other end of casing, the connecting piece with communicating pipe intercommunication, the syringe needle with the connecting piece intercommunication.

The injection pushing component comprises a push rod, a rack, a handle, a piston piece, a speed reducing piece, a mounting shell, a rotating piece and a micro motor, one end of the push rod is arranged in the shell, the rack is connected to one side of the push rod, the handle is fixed at one end of the push rod, the piston piece is connected at the other end of the push rod, the piston part is arranged between the push rod and the shell, the speed reducer is arranged inside the shell, the speed reducer is meshed with the rack, the mounting shell is connected with the lug, the mounting shell is communicated with the shell, the rotating member is arranged on one side of the outer part of the mounting shell and is connected with the speed reducing member, the micro motor is arranged on the other side of the outer portion of the mounting shell, and the output end of the micro motor is connected with the speed reducer in a rotating mode.

The limiting adjusting assembly comprises a connecting rod, a supporting rod, an adjusting bolt, a supporting plate and a limiting baffle, the connecting rod is connected with the shell in a sliding mode, one end of the supporting rod is connected with the connecting rod, the adjusting bolt is connected between the shell and the connecting rod, the supporting plate is connected with the other end of the supporting rod, and the limiting baffle is connected to one side of the supporting plate.

In an embodiment of the present invention, the connecting hole is formed on the protruding block, and the scale mark is disposed outside the casing.

The utility model discloses an in one embodiment, the connecting piece includes first connecting block, second connecting block and cavity, first connecting block with communicating pipe connects, the second connecting block with first connecting block intercommunication, the cavity with second connecting block intercommunication.

In an embodiment of the present invention, the first connecting block is connected to the communicating pipe, and the outside of the syringe needle is provided with a protective cover.

The utility model discloses an in one embodiment, the handle includes plate body and limiting plate, the plate body is connected the one end of push rod, the limiting plate is connected the plate body with between the push rod.

The utility model discloses an in one embodiment, the piston spare includes push pedal, rubber pad and sealed pad, the push pedal is connected the one end of push rod, the push pedal sets up the inside of casing, the rubber pad bonds one side of push pedal, sealed pad sets up the push pedal the rubber pad and between the casing.

In an embodiment of the present invention, the speed reducer includes a first gear, a second gear, a third gear, a fourth gear and a fifth gear, the first gear, the second gear, the third gear, the fourth gear and the fifth gear are disposed inside the mounting shell, the first gear is connected to the rotating member, the second gear is connected to the first gear in a meshed manner, the third gear is fixedly connected to the second gear, the fourth gear is connected to the third gear in a meshed manner, the fifth gear is fixedly connected to the fourth gear, and the fifth gear is connected to the rack in a meshed manner.

The utility model discloses an in one embodiment, the rotating member includes connecting rod, knob and scale ring, the one end of connecting rod with first gear connection, the knob with the other end of connecting rod is rotated and is connected, the knob with the scale ring sets up the outside of installation shell, the scale ring sets up the outside of knob.

In an embodiment of the present invention, the inside of the installation shell is provided with a power supply, and the outside of the installation shell is provided with a switch.

The utility model discloses an in one embodiment, the spout has been seted up to the outside of casing, the bracing piece passes through the spout with casing sliding connection, the through-hole has been seted up in the backup pad, the push rod with the through-hole is connected.

The utility model has the advantages that: the utility model discloses a quantitative injector that obtains through above-mentioned design, during the use, after the extraction liquid medicine in the casing, when needs manual injection medicine under the rate of regulation, drive the gear reduction through the rotating member and rotate, the gear reduction is connected with the rack toothing, rotate the rotation of rotating member through the gear reduction, realize decelerating the removal of rack, thereby drive the push rod and remove, thereby extrude the liquid medicine through the piston spare, at last slowly inject the liquid medicine into the patient through the syringe needle, can realize that the distance that the push rod removed is the same through rotating the rotating member round at every turn, thereby the flow of control liquid medicine that can be accurate, when needs finish at the specified time injection, start micro motor, micro motor rotates and drives the gear reduction and rotates, thereby realize the uniform motion of rack, thereby the flow and the rate of control liquid medicine injection that can be accurate, can inject the position of push pedal through setting up limit baffle, thereby be favorable to controlling the content of extracting in the casing, through adjusting the position of connecting rod on the casing, thereby be favorable to adjusting limit baffle's position, thereby can regulate and control the liquid medicine content of extracting in the casing, adjusting bolt can fix limit baffle's position, flow and the rate that can effectual accurate control liquid medicine injection, because can carry out slow injection to the liquid medicine, reducible because of the too fast injection of medicine causes bad influence to patient's health, the content of medicine extraction also can be controlled simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a quantitative injector according to an embodiment of the present invention;

fig. 2 is a schematic view of a first perspective structure of the housing assembly according to an embodiment of the present invention;

fig. 3 is a second perspective structural schematic view of the housing assembly according to the embodiment of the present invention;

fig. 4 is a schematic structural view of a speed reducer provided by an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a piston member according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a limiting adjustment assembly according to an embodiment of the present invention;

fig. 7 is a schematic view of a structure of an injection needle according to an embodiment of the present invention.

In the figure: 100-a housing assembly; 110-a housing; 120-a bump; 122-connecting hole; 130-a communicating tube; 140-a connector; 141-first connection block; 143-a second connecting block; 145-a cavity; 150-syringe needle; 160-protective sleeve; 170-graduation mark; 200-an injection pushing assembly; 210-a push rod; 220-a rack; 230-a handle; 232-plate body; 234-limiting plate; 240-a piston member; 242-a push plate; 244-rubber pad; 246-a seal pad; 250-a reduction; 251-a first gear; 253-a second gear; 255-third gear; 257 — fourth gear; 259-fifth gear; 260-mounting a housing; 270-a rotating member; 272-connecting rod; 274-a knob; 276-a graduated ring; 280-a micro motor; 290-a power supply; 292-a switch; 300-limit adjusting assembly; 310-a connecting rod; 320-a support bar; 330-a chute; 340-adjusting bolts; 350-a support plate; 352-a through hole; 360-limit baffle.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-7, the present invention provides a quantitative injector comprising a housing assembly 100, an injection pushing assembly 200 and a limiting adjustment assembly 300.

Referring to fig. 1 to 7, the housing assembly 100 includes a housing 110, a protrusion 120, a connection tube 130, a connection member 140, and an injection needle 150, wherein the protrusion 120 is connected to one end of the housing 110, the protrusion 120 is formed with a connection hole 122, and the housing 110 is provided with scale marks 170 on the outside thereof. The content of the liquid medicine in the housing 110 is conveniently observed by providing the scale marks 170, the communication pipe 130 is connected to the other end of the housing 110, the connection member 140 is communicated with the communication pipe 130, and the injection needle 150 is communicated with the connection member 140. The connection member 140 includes a first connection block 141, a second connection block 143, and a cavity 145, the first connection block 141 being connected to the communication pipe 130, the second connection block 143 being communicated with the first connection block 141, the cavity 145 being communicated with the second connection block 143. The first connecting block 141 is connected with the communicating tube 130 by screw threads, a protective sleeve 160 is arranged outside the injection needle 150, and the protective sleeve 160 is connected with the second connecting block 143 by screw threads.

Referring to fig. 1 to 7, the injection pushing assembly 200 includes a push rod 210, a rack 220, a handle 230, a piston 240, a speed reducer 250, a mounting shell 260, a rotating member 270, and a micro motor 280, wherein one end of the push rod 210 is disposed inside the housing 110, the rack 220 is connected to one side of the push rod 210, the handle 230 is fixed to one end of the push rod 210, the handle 230 includes a plate 232 and a limiting plate 234, the plate 232 is connected to one end of the push rod 210, and the limiting plate 234 is connected between the plate 232 and the push rod 210. The piston member 240 is coupled to the other end of the push rod 210, the piston member 240 is disposed between the push rod 210 and the housing 110, the piston member 240 includes a push plate 242, a rubber pad 244, and a sealing pad 246, the push plate 242 is coupled to one end of the push rod 210, the push plate 242 is disposed inside the housing 110, the rubber pad 244 is bonded to one side of the push plate 242, and the sealing pad 246 is disposed between the push plate 242, the rubber pad 244, and the housing 110. The sealing gasket 246 and the rubber pad 244 can increase the sealing performance between the push plate 242 and the housing 110 and can prevent the liquid medicine from leaking, the speed reducer 250 is arranged inside the housing 110, the speed reducer 250 is engaged with the rack 220, the speed reducer 250 comprises a first gear 251, a second gear 253, a third gear 255, a fourth gear 257 and a fifth gear 259, the first gear 251, the second gear 253, the third gear 255, the fourth gear 257 and the fifth gear 259 are arranged inside the mounting shell 260, the first gear 251 is connected with the rotating member 270, the second gear 253 is engaged with the first gear 251, the third gear 255 is fixedly connected with the second gear 253, the fourth gear 257 is engaged with the third gear 255, the fifth gear 259 is fixedly connected with the fourth gear 257, and the fifth gear 259 is engaged with the rack 220. The mounting shell 260 is connected with the projection 120, the mounting shell 260 is communicated with the housing 110, the rotating member 270 is arranged on one side of the outside of the mounting shell 260, the rotating member 270 is connected with the speed reducer 250, the rotating member 270 comprises a connecting rod 272, a knob 274 and a graduated ring 276, one end of the connecting rod 272 is connected with the first gear 251, the knob 274 is rotatably connected with the other end of the connecting rod 272, the knob 274 and the graduated ring 276 are arranged on the outside of the mounting shell 260, and the graduated ring 276 is arranged on the outside of the knob 274. The graduated ring 276 is provided to facilitate the understanding of the rotating range and the number of turns when the knob 274 is manually rotated, so as to facilitate the calculation of the moving distance of the push rod 210, the micro motor 280 is provided at the other side of the outside of the mounting case 260, the output end of the micro motor 280 is rotatably connected with the speed reducer 250, the power supply 290 is provided inside the mounting case 260, and the switch 292 is provided outside the mounting case 260. The rotary knob 274 is rotated to drive the connecting rod 272 and the speed reducer 250 to rotate, the speed reducer 250 is meshed with the rack 220 and is connected with the rack 274, the speed reducer 250 decelerates the rotation of the rotary knob 274, the rack 220 is decelerated in moving, the push rod 210 is driven to move, the liquid medicine is extruded through the push plate 242, and finally the liquid medicine is slowly injected into a patient body through the injection needle 150.

Referring to fig. 1 to 7, the limit adjusting assembly 300 includes a connecting rod 310, a supporting rod 320, an adjusting bolt 340, a supporting plate 350, and a limit baffle 360, wherein the connecting rod 310 is slidably connected to the housing 110, one end of the supporting rod 320 is connected to the connecting rod 310, a sliding groove 330 is formed outside the housing 110, and the supporting rod 320 is slidably connected to the housing 110 through the sliding groove 330. The adjusting bolt 340 is connected between the housing 110 and the connecting rod 310, the supporting plate 350 is connected with the other end of the supporting rod 320, the limiting baffle 360 is connected to one side of the supporting plate 350, the supporting plate 350 is provided with a through hole 352, and the push rod 210 is connected with the through hole 352. Can prescribe a limit to the position of push pedal 242 through setting up limit baffle 360 to be favorable to controlling the content of extracting in casing 110, through adjusting the position of connecting rod 310 on casing 110, thereby be favorable to adjusting limit baffle 360's position, thereby can regulate and control the liquid medicine content of extracting in casing 110, adjusting bolt 340 can fix limit baffle 360's position.

The working principle of the quantitative injector is as follows: when the injection device is used, after liquid medicine is extracted from the shell 110, when the medicine needs to be injected manually at a specified limiting rate, the knob 274 is rotated to drive the connecting rod 272 and the speed reducer 250 to rotate, the speed reducer 250 is meshed with the rack 220, the rotation of the knob 274 is reduced through the speed reducer 250 to reduce the speed of the movement of the rack 220, so that the push rod 210 is driven to move, the liquid medicine is extruded through the push plate 242, finally the liquid medicine is slowly injected into a patient through the injection needle 150, the same moving distance of the push rod 210 can be realized by rotating the knob 274 for one circle each time, so that the flow rate of the liquid medicine can be accurately controlled, when the injection is finished at the specified time, the power supply 290 is electrically connected with the micro motor 280, the micro motor 280 rotates to drive the speed reducer 250 to rotate, so that the uniform movement of the rack 220 is realized, and the flow rate and the speed of the liquid medicine injection can be accurately controlled, when the injection rate of the liquid medicine is slow, the shell 110 can be suspended by connecting the connecting hole 122 with an external connecting rope, automatic injection of the injector can be realized, the occupation of time of medical care personnel can be reduced, the content of the liquid medicine in the shell 110 can be observed conveniently by setting the scale mark 170, the sealing gasket 246 and the rubber gasket 244 can increase the sealing performance between the push plate 242 and the shell 110, the leakage of the liquid medicine can be prevented, the position of the push plate 242 can be limited by arranging the limit baffle 360, the content extracted into the shell 110 can be controlled conveniently, the position of the limit baffle 360 can be adjusted conveniently by adjusting the position of the connecting rod 310 on the shell 110, the content of the liquid medicine extracted into the shell 110 can be adjusted and controlled, the adjusting bolt 340 can fix the position of the limit baffle 360, and the limitation range of the injection rate in a specified range is improved, the flow of liquid medicine injection and the speed of liquid medicine injection are difficult to accurately control through manual operation, adverse effects on the body of a patient caused by too fast medicine injection are easy to occur, and meanwhile, the problem that the content of medicine extraction cannot be controlled due to the fact that existing injectors extract medicines is solved.

It should be noted that the specific model specifications of the micro motor 280 and the power supply 290 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art, so detailed description is omitted.

The power supply and the principle of the micro-motor 280 and the power supply 290 will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quantitative syringe is characterized by comprising

The injection syringe comprises a shell assembly (100), wherein the shell assembly (100) comprises a shell (110), a convex block (120), a communication pipe (130), a connecting piece (140) and an injection needle (150), the convex block (120) is connected to one end of the shell (110), the communication pipe (130) is connected to the other end of the shell (110), the connecting piece (140) is communicated with the communication pipe (130), and the injection needle (150) is communicated with the connecting piece (140);

an injection pushing assembly (200), the injection pushing assembly (200) includes a push rod (210), a rack (220), a handle (230), a piston (240), a speed reducer (250), an installation shell (260), a rotating member (270) and a micro motor (280), one end of the push rod (210) is disposed inside the housing (110), the rack (220) is connected to one side of the push rod (210), the handle (230) is fixed to one end of the push rod (210), the piston (240) is connected to the other end of the push rod (210), the piston (240) is disposed between the push rod (210) and the housing (110), the speed reducer (250) is disposed inside the housing (110), the speed reducer (250) is engaged with the rack (220), and the installation shell (260) is connected with the projection (120), the mounting shell (260) is communicated with the shell (110), the rotating piece (270) is arranged on one side of the outer portion of the mounting shell (260), the rotating piece (270) is connected with the speed reducer (250), the micro motor (280) is arranged on the other side of the outer portion of the mounting shell (260), and the output end of the micro motor (280) is rotatably connected with the speed reducer (250);

spacing adjusting part (300), spacing adjusting part (300) includes connecting rod (310), bracing piece (320), adjusting bolt (340), backup pad (350) and limit baffle (360), connecting rod (310) with casing (110) sliding connection, the one end of bracing piece (320) with connecting rod (310) are connected, adjusting bolt (340) are connected casing (110) with between connecting rod (310), backup pad (350) with the other end of bracing piece (320) is connected, limit baffle (360) are connected one side of backup pad (350).

2. The dosing syringe according to claim 1, characterized in that the projection (120) is provided with a connecting hole (122), and the housing (110) is provided with scale marks (170) on the outside.

3. A dosing syringe according to claim 1, characterized in that the connection member (140) comprises a first connection block (141), a second connection block (143) and a chamber (145), the first connection block (141) being connected to the communicating tube (130), the second connection block (143) being in communication with the first connection block (141), the chamber (145) being in communication with the second connection block (143).

4. A dosing syringe according to claim 3, characterized in that said first connecting block (141) is connected to said communicating tube (130) and that said injection needle (150) is externally provided with a shield (160).

5. The dosing injector of claim 1, wherein the handle (230) comprises a plate (232) and a stop plate (234), the plate (232) being connected to an end of the plunger (210), the stop plate (234) being connected between the plate (232) and the plunger (210).

6. A dosing injector according to claim 1, characterized in that the piston member (240) comprises a push plate (242), a rubber pad (244) and a sealing pad (246), the push plate (242) is connected to one end of the push rod (210), the push plate (242) is arranged inside the housing (110), the rubber pad (244) is bonded to one side of the push plate (242), and the sealing pad (246) is arranged between the push plate (242), the rubber pad (244) and the housing (110).

7. A dosing syringe according to claim 1, characterized in that the reduction member (250) comprises a first gear wheel (251), a second gear wheel (253), a third gear wheel (255), a fourth gear wheel (257) and a fifth gear wheel (259), the first gear wheel (251), the second gear wheel (253), the third gear wheel (255), the fourth gear wheel (257) and the fifth gear wheel (259) being arranged inside the mounting housing (260), the first gear wheel (251) being connected to the rotational member (270), the second gear wheel (253) being in meshing connection with the first gear wheel (251), the third gear wheel (255) being fixedly connected to the second gear wheel (253), the fourth gear wheel (257) being in meshing connection with the third gear wheel (255), the fifth gear wheel (259) being fixedly connected to the fourth gear wheel (257), the fifth gear (259) is meshed with the rack (220).

8. A dosing injector according to claim 7, characterized in that the rotary member (270) comprises a rod (272), a knob (274) and a scale ring (276), one end of the rod (272) being connected to the first gear wheel (251), the knob (274) being rotatably connected to the other end of the rod (272), the knob (274) and the scale ring (276) being arranged outside the mounting housing (260), the scale ring (276) being arranged outside the knob (274).

9. A dosing injector according to claim 1, characterized in that the mounting housing (260) is provided with a power supply (290) inside and a switch (292) outside the mounting housing (260).

10. The quantitative injector as claimed in claim 1, wherein a sliding groove (330) is formed on an exterior of the housing (110), the supporting rod (320) is slidably connected to the housing (110) through the sliding groove (330), a through hole (352) is formed on the supporting plate (350), and the push rod (210) is connected to the through hole (352).