CN112773979A

CN112773979A - Quantitative injector

Info

Publication number: CN112773979A
Application number: CN202110166927.2A
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: 2021-05-11

Abstract

The invention provides a quantitative syringe, which belongs to the technical field of medical devices. Including housing assembly, injection push assembly and limit adjustment assembly. The protrusion is connected to one end of the casing, the communication pipe is connected to the other end of the casing, the connecting piece is communicated with the communication pipe, and the piston piece is arranged between the push rod and the between the casings, the rotating member is arranged on the outer side of the mounting casing, the rotating member is connected with the speed reduction member, and the adjusting bolt is connected between the casing and the connecting rod, The support plate is connected to the other end of the support rod, and the limit baffle is connected to one side of the support plate. The present invention is beneficial to accurately control the flow rate and rate of the liquid medicine injection, can reduce the adverse effect on the patient's physical condition caused by the over-speed injection of the medicine, and can also effectively control the content of the medicine extracted.

Description

Quantitative injector

Technical Field

The invention relates to the technical field of medical instruments, in particular 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.

Disclosure of Invention

In order to make up for the above deficiencies, the invention provides a quantitative injector, aiming at improving the problems that the flow rate of liquid medicine injection and the speed of liquid medicine injection are difficult to accurately control by manual operation within the limit range of the specified injection speed, the adverse effect on the body of a patient caused by too fast medicine injection is easy to occur, and the content of medicine extraction cannot be controlled when the existing injectors extract medicines.

The invention is realized by the following steps:

the invention provides a quantitative injector which comprises an outer shell component, an injection pushing component and a limiting and adjusting component.

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 protruding block is provided with a connecting hole, and the outer portion of the housing is provided with scale marks.

In an embodiment of the present invention, the connection member includes a first connection block, a second connection block, and a cavity, the first connection block is connected to the connection pipe, the second connection block is communicated with the first connection block, and the cavity is communicated with the second connection block.

In an embodiment of the present invention, the first connection block is connected to the communication pipe, and a protective sleeve is disposed outside the injection needle.

In one embodiment of the invention, the handle comprises a plate body and a limiting plate, the plate body is connected to one end of the push rod, and the limiting plate is connected between the plate body and the push rod.

In an embodiment of the present invention, the piston member includes a push plate, a rubber pad, and a sealing pad, the push plate is connected to one end of the push rod, the push plate is disposed inside the housing, the rubber pad is bonded to one side of the push plate, and the sealing pad is disposed between the push plate, the rubber pad, and the housing.

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 case, the first gear is connected to the rotating member, the second gear is engaged with the first gear, the third gear is fixedly connected to the second gear, the fourth gear is engaged with the third gear, the fifth gear is fixedly connected to the fourth gear, and the fifth gear is engaged with the rack.

In one embodiment of the present invention, the rotating member includes a connecting rod, a knob, and a graduated ring, one end of the connecting rod is connected to the first gear, the knob is rotatably connected to the other end of the connecting rod, the knob and the graduated ring are disposed outside the mounting shell, and the graduated ring is disposed outside the knob.

In one embodiment of the invention, the power supply is arranged inside the mounting shell, and the switch is arranged outside the mounting shell.

In an embodiment of the present invention, a sliding groove is formed outside the housing, the supporting rod is slidably connected to the housing through the sliding groove, a through hole is formed in the supporting plate, and the push rod is connected to the through hole.

The invention has the beneficial effects that: when the quantitative injector is used, after liquid medicine is extracted from the shell, when the medicine needs to be injected manually at a specified limiting rate, the rotating part drives the speed reducing part to rotate, the speed reducing part is meshed with the rack, the speed of the rotation of the rotating part is reduced through the speed reducing part, the movement of the rack is reduced, the push rod is driven to move, the liquid medicine is extruded through the piston part, the liquid medicine is slowly injected into a patient through the injection needle, the moving distances of the push rod can be the same through rotating the rotating part for one circle each time, the flow of the liquid medicine can be accurately controlled, when the injection is finished at a specified time, the micro motor is started, rotates to drive the speed reducing part to rotate, the uniform movement of the rack is realized, and the flow and the speed of the liquid medicine injection can be accurately controlled, 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 diagram of a quantitative injector according to an embodiment of the present invention;

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

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

FIG. 4 is a schematic structural diagram of a speed reducer according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a piston assembly according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a spacing 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

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the 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 and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered 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 defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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 limit adjusting 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, 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 in that, comprises

A housing assembly (100), the housing assembly (100) comprising a housing (110), a projection (120), a communication tube (130), a connecting piece (140) and an injection needle (150), the projection (120) ) is connected to one end of the casing (110), the communicating pipe (130) is connected to the other end of the casing (110), and the connecting piece (140) is communicated with the communicating pipe (130), the injection needle (150) communicates with the connecting piece (140);

An injection push assembly (200), the injection push assembly (200) includes a push rod (210), a rack (220), a handle (230), a piston member (240), a deceleration member (250), and a mounting shell (260) , a rotating member (270) and a micro motor (280), one end of the push rod (210) is arranged inside the casing (110), and the rack (220) is connected to the push rod (210) The handle (230) is fixed on one end of the push rod (210), the piston member (240) is connected to the other end of the push rod (210), and the piston member (240) is provided with Between the push rod (210) and the housing (110), the speed reduction member (250) is provided inside the housing (110), and the speed reduction member (250) is connected to the rack. (220) engagingly connected, the mounting shell (260) is connected with the projection (120), the mounting shell (260) is communicated with the housing (110), and the rotating member (270) is provided at the on the outer side of the installation shell (260), the rotating member (270) is connected with the reduction member (250), and the micro-motor (280) is arranged on the outer side of the installation shell (260), The output end of the micro-motor (280) is rotatably connected with the deceleration member (250);

A limit adjustment assembly (300), the limit adjustment assembly (300) includes a connecting rod (310), a support rod (320), an adjustment bolt (340), a support plate (350), and a limit stopper (360) , the connecting rod (310) is slidably connected with the casing (110), one end of the support rod (320) is connected with the connecting rod (310), and the adjusting bolt (340) is connected with the casing Between the body (110) and the connecting rod (310), the supporting plate (350) is connected to the other end of the supporting rod (320), and the limiting baffle (360) is connected to the supporting plate (350) side.

2 . The quantitative syringe according to claim 1 , wherein a connecting hole ( 122 ) is opened on the convex block ( 120 ), and a scale line ( 170 ) is provided on the outside of the housing ( 110 ). 3 . .

3 . The metering syringe according to claim 1 , wherein the connecting piece ( 140 ) comprises a first connecting block ( 141 ), a second connecting block ( 143 ) and a cavity ( 145 ), and the The first connection block (141) is connected with the communication pipe (130), the second connection block (143) is in communication with the first connection block (141), and the cavity (145) is connected with the second connection block (141). The connection block (143) communicates.

4. A metering syringe according to claim 3, characterized in that, the first connection block (141) is connected with the communication pipe (130), and a protective cover is provided on the outside of the injection needle (150). (160).

5. A metering syringe according to claim 1, wherein the handle (230) comprises a plate body (232) and a limit plate (234), and the plate body (232) is connected to the pusher At one end of the rod (210), the limiting plate (234) is connected between the plate body (232) and the push rod (210).

6 . The quantitative syringe according to claim 1 , wherein the piston member ( 240 ) comprises a push plate ( 242 ), a rubber gasket ( 244 ) and a sealing gasket ( 246 ), and the push plate ( 242 ) ) is connected to one end of the push rod (210), the push plate (242) is arranged inside the housing (110), and the rubber pad (244) is adhered to the edge of the push plate (242). On one side, the sealing gasket (246) is arranged between the push plate (242), the rubber gasket (244) and the casing (110).

7 . The metering syringe according to claim 1 , wherein the speed reduction member ( 250 ) comprises a first gear ( 251 ), a second gear ( 253 ), a third gear ( 255 ), and a fourth gear (257) and the fifth gear (259), the first gear (251), the second gear (253), the third gear (255), the fourth gear (257) and the first gear (257) A fifth gear (259) is arranged inside the mounting shell (260), the first gear (251) is connected with the rotating member (270), and the second gear (253) is connected with the first gear (253). 251) meshing connection, the third gear (255) is fixedly connected to the second gear (253), the fourth gear (257) is meshingly connected to the third gear (255), and the fifth gear (259) is fixedly connected with the fourth gear (257), and the fifth gear (259) is engaged with the rack (220).

8 . The metering syringe according to claim 7 , wherein the rotating member ( 270 ) comprises a connecting rod ( 272 ), a knob ( 274 ) and a scale ring ( 276 ), and the connecting rod ( 272 ) One end 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 scale ring (276) are arranged at the the outside of the mounting shell (260), the scale ring (276) is arranged outside the knob (274).

9 . The metering syringe according to claim 1 , wherein a power supply ( 290 ) is provided inside the mounting shell ( 260 ), and a switch ( 292 ) is provided outside the mounting shell ( 260 ). 10 .

10. The metering syringe according to claim 1, wherein a chute (330) is provided on the outside of the housing (110), and the support rod (320) passes through the chute (330) In sliding connection with the housing (110), a through hole (352) is formed on the support plate (350), and the push rod (210) is connected with the through hole (352).