CN210812977U - Speed-adjustable negative pressure circulation injection type flusher - Google Patents

Abstract

The application discloses a speed-adjustable negative pressure circulating injection type flusher, which comprises a shell; a reciprocating injection device is mounted inside the housing, the reciprocating injection device comprising: the plunger comprises a cross rod, a plug is fixed at the front end of the cross rod, and a waist-shaped ring is sleeved at the rear end of the cross rod; the injection cavity is provided with a first channel, a second channel and a third channel which are communicated with each other; the plug connector comprises a fixing plate, the fixing plate is fixedly connected with the shell, the fixing plate is provided with a first through hole and a second through hole, the first insertion tube is fixed in the first through hole, the second insertion tube is fixed in the second through hole, one end of the second insertion tube is inserted into the first channel, and the liquid pumping check valve is installed in the second channel; the liquid outlet one-way valve is arranged in the first channel; the plug is positioned in the third channel and used for reciprocating in the third channel, so that the liquid pumping one-way valve is opened and closed, the liquid outlet one-way valve is closed and opened, and flushing liquid enters the second channel and is discharged from the first channel. Convenient use and high reliability.

Description

Speed-adjustable negative pressure circulation injection type flusher

Technical Field

The application relates to the technical field of medical equipment, in particular to a speed-adjustable negative pressure circulating injection type flusher.

Background

In recent years, the proportion of wound surgery and orthopedic surgery is continuously increased, wound surface flushing and infection prevention in the treatment process are very important, therefore, wound cleaning equipment is continuously researched and developed at home and abroad, flushers are widely used at home, and the existing flushers are poor in use convenience and reliability and do not have the speed regulation function. Therefore, a speed-adjustable negative pressure circulation injection type flusher with convenient use and high reliability is needed.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

According to one aspect of the present application, there is provided an adjustable speed negative pressure cycling injection syringe, comprising: a housing; a reciprocating injection device installed inside the housing for reciprocally drawing and injecting a washing liquid; the reciprocating injection device comprises: a plunger comprising a cross-bar, a plug and a kidney ring integrally formed; an injection cavity having a first channel, a second channel and a third channel in communication with each other; the plug connector comprises a fixing plate, the fixing plate is fixedly connected with the shell, the fixing plate is provided with a first through hole and a second through hole, a first insertion pipe is fixed in the first through hole, a second insertion pipe is fixed in the second through hole, and one end of the second insertion pipe is inserted into the first channel and communicated with the first channel; a liquid-extracting check valve installed inside the second passage; the liquid outlet one-way valve is arranged inside the first channel; the plug is positioned in the third channel and used for reciprocating in the third channel so as to open and close the liquid pumping one-way valve and close and open the liquid outlet one-way valve, and then flushing liquid enters the second channel and is discharged from the first channel; a liquid extracting pipe is connected to the end part of the second channel, the second channel and the liquid extracting pipe form a liquid extracting channel, and the liquid extracting pipe is connected with a flushing liquid bag; one end of the first intubation is connected with a liquid return pipe, the first intubation and the liquid return pipe form a liquid return channel, and the liquid return pipe is connected with a negative pressure suction apparatus; a drive device mounted inside the housing and connected to the reciprocating injection device, the drive device comprising: a drive bevel gear; the driven gear is meshed with the driving bevel gear, a central hole is formed in the middle of the driven gear, and the central hole is connected with the shell through a shaft; the top surface of the driven gear is provided with an eccentric ring, and the eccentric ring is connected with the waist-shaped ring in a sliding manner; an electrical device located inside the housing and connected to the drive device, the electrical device comprising: a direct current motor; the gear switch is connected with the direct current motor; and a battery box connected with the gear switch; a first battery pack and a second battery pack which are connected in series are arranged in the battery box;

the first speed regulating circuit and/or the second speed regulating circuit;

the first speed regulating loop is characterized in that the gear switch is connected with the first battery pack and the second battery pack through a first line, the second battery pack is connected with the direct current motor through a second line, and the direct current motor is connected with the gear switch through a third line and used for regulating the rotating speed; the second speed regulation loop is characterized in that the gear switch is connected with the second battery pack through a fourth line, the second battery pack is connected with the direct current motor through the second line, and the direct current motor is connected with the gear switch through a third line and used for reducing the rotating speed.

Optionally, the tail part of the liquid outlet one-way valve is in a first inverted cone shape or waist drum shape or spherical shape; the tail part of the liquid pumping one-way valve is in a second inverted cone shape or waist drum shape or spherical shape.

Optionally, the liquid outlet one-way valve is umbrella-shaped; the liquid-pumping one-way valve is umbrella-shaped.

Optionally, the rotor of the dc motor is fixedly connected to the driving bevel gear.

Optionally, the first channel is disposed coaxially with the second cannula.

Optionally, further comprising an injection pipe, the injection pipe comprising: the cover is connected with the shell and provided with a cavity and a third through hole, and the cavity is communicated with the other end of the first cannula; the first end of the thick pipe and the third through hole are integrally formed or separately formed; and a thin tube located inside the thick tube; the first end of the thin tube is communicated with the other end of the second intubation tube to form a liquid outlet channel, and the second end of the thin tube is close to the affected part and used for spraying the flushing liquid; the thick tube, the cavity and the other end of the first insertion tube form a liquid return channel, and the second end of the thick tube is close to the affected part and used for recycling the used flushing liquid.

The speed-adjustable negative pressure circulation injection type flusher comprises a reciprocating injection and extraction device, wherein the reciprocating injection and extraction device is arranged inside a shell and is used for extracting flushing liquid in a reciprocating mode, the reciprocating injection device comprises a plunger, an injection cavity, a plug connector, a liquid extraction one-way valve and a liquid extraction one-way valve, the plunger comprises a cross rod, a plug is fixed at the front end of the cross rod, a waist-shaped ring is sleeved at the rear end of the cross rod, the injection cavity is provided with a first channel, a second channel and a third channel which are communicated with each other, the plug connector comprises a fixing plate, the fixing plate is fixedly connected with the shell, the fixing plate is provided with a first through hole and a second through hole, the first insertion tube is fixed at the first through hole, the second insertion tube is fixed at the second through hole, one end of the second insertion tube is inserted into and communicated with the first channel, the liquid extraction one-way valve is arranged inside the, the speed-adjustable negative pressure circulation injection flusher is used for reciprocating in the third channel, so that the liquid pumping one-way valve is opened and closed, the liquid outlet one-way valve is closed and opened, flushing liquid enters the second channel and is discharged from the first channel, and the speed-adjustable negative pressure circulation injection flusher is convenient to use and high in reliability.

Furthermore, a first battery pack and a second battery pack which are connected in series are arranged in the battery box, the first speed regulating loop is formed in the way that a gear switch is connected with the first battery pack and the second battery pack through a first circuit, the second battery pack is connected with a direct current motor through a second circuit, and the direct current motor is connected with the gear switch through a third circuit and used for increasing the rotating speed; the second speed regulation loop is characterized in that the gear switch is connected with the second battery pack through a fourth circuit, the second battery pack is connected with the direct current motor through a second circuit, and the direct current motor is connected with the gear switch through a third circuit and used for reducing the rotating speed and realizing speed regulation.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic perspective view of an adjustable speed negative pressure cyclical injection syringe flusher according to one embodiment of the present application;

FIG. 2 is a cross-sectional top view A-A of the adjustable speed negative pressure recirculating syringe apparatus of FIG. 1;

FIG. 3 is a cross-sectional view of the ejector tube of the adjustable speed negative pressure recirculating syringe apparatus of FIG. 1;

FIG. 4 is a schematic block diagram of the irrigant bag of the adjustable speed negative pressure cycling injector device of FIG. 1;

FIG. 5 is a schematic block diagram of the negative pressure aspirator of the adjustable speed negative pressure circulation syringe apparatus shown in FIG. 1;

FIG. 6 is a schematic block diagram of the speed regulating structure of the speed adjustable negative pressure cycling injection flusher device shown in FIG. 1.

The labels in the figure are:

1-a housing; 2-a direct current motor; 3-driving the bevel gear; 4-a driven gear; 41-eccentric ring; 5-a plunger; 501-a cross bar; 502-plug; 503-waist ring; 6-liquid return pipe; 7-a plug connector; 701-a first cannula; 702-a second cannula; 703-a fixing plate; 704-the other end of the second cannula; 705-the other end of the first cannula; 8-an injection cavity; 801-a first channel; 802-second channel; 803-a third channel; 9-a liquid extracting pipe; 10-axis; 11-liquid outlet one-way valve; 1101-a first inverse taper shape; 12-a liquid extraction one-way valve; 1201-second inverse taper shape; 13-position switch; 14-a jet pipe; 141-a cavity; 142-a lid; 143-third via; 144-thick tube; 145-a first end of a wide tube; 146-tubule; 147-a first end of a tubule; 148-a second end of the tubule; 149-second end of the wide tube; 15-washing liquid bag; 16-a negative pressure aspirator; 17-a first battery; 18-a second battery pack; 19-a first line; 20-a second line; 21-third line.

Detailed Description

FIG. 1 is a schematic perspective view of an adjustable speed negative pressure cyclical syringe flusher according to one embodiment of the present application, and FIG. 2 is a cross-sectional top view A-A of the adjustable speed negative pressure cyclical syringe device of FIG. 1. The adjustable speed negative pressure cyclic injection irrigator may generally comprise a housing 1, a drive means, a reciprocating injection means and an electrical means. The reciprocating injection device is arranged in the shell 1 and used for extracting and injecting flushing liquid in a reciprocating mode and then injecting the flushing liquid, the driving device and the reciprocating injection device are arranged in the shell 1 in a relative mode, the driving device drives the reciprocating injection device to extract the flushing liquid, and the injection electric device provides power and control for the driving device. The device is powered and controlled by an electric device, the reciprocating injection device is driven by a driving device to realize the extraction and injection of the flushing liquid, and the device has the characteristics of compact structure, simple and accurate transmission, stable flow and pressure, convenient use and high reliability.

Referring to fig. 1 and 2, in one embodiment, a reciprocating injection device may generally comprise a plunger 5, an injection cavity 8, a socket 7, an aspiration one-way valve 12 and a discharge one-way valve 11. Wherein the plunger 5 is composed of a cross-bar 501, a plug 502 and a kidney ring 503. Specifically, the front end of the crossbar 501 is connected with the plug 502 in a clamping manner, and the rear end of the crossbar 501 is connected with the waist-shaped ring 503 in a sleeving manner, or the front end and the rear end of the crossbar 501 can be integrally formed. The cross bar 501, plug 502 and kidney ring 503 are arranged in an axis. Optionally, the cross bar 501, the plug 502 and the kidney ring 503 are made of plastic or nylon to prevent rusting, and at least one groove is formed in the plug 502, and a sealing ring (not labeled in the figure) is sleeved on the groove. The injection cavity 8 has a first channel 801, a second channel 802 and a third channel 803 which communicate with each other, and further, the injection cavity 8 is "U" shaped. The plug 7 is composed of a fixing plate 703, a first insertion tube 701, and a second insertion tube 702. The first cannula 701 and the second cannula 702 are integrated or split, the fixing plate 703 is connected with the housing 1 through threads or clamping, a first through hole and a second through hole are formed in the fixing plate 703, the first cannula 701 is bonded and fixed to the first through hole, the second cannula 702 is bonded and fixed to the second through hole, one end of the second cannula 702 is inserted into the first channel 801, and the first cannula 701 and the second cannula are hermetically sleeved, bonded and communicated to avoid outflow of flushing liquid. The liquid-drawing one-way valve 12 is clamped inside the second channel 802, and the liquid-outlet one-way valve 11 is clamped inside the first channel 801. Specifically, the plug 502 is located inside the third channel 803, and reciprocates inside the third channel 803, so that the liquid pumping check valve 12 is opened and closed, the liquid outlet check valve 11 is closed and opened, and then the flushing liquid enters the second channel 802 and is discharged from the first channel 801, and the first channel 801 and the second cannula 702 are coaxially arranged, so that the flushing liquid can flow conveniently. The operation is convenient, the structure is simple, and the structure is optimized reasonably. Optionally, the housing 1 is "7" shaped for ease of handling, the plug 502 is tapered, and the cross-section of the crossbar 501 is circular.

Referring to fig. 1, in the above embodiment, optionally, an extractor tube 9 is connected to the end of the second channel 802 by glue, the second channel 802 and the extractor tube 9 form an extractor channel for extracting the washing liquid, and the extractor tube 9 is a hose. A liquid return pipe 6 is connected to one end of the first insertion pipe 701 in a sealing manner through glue, the first insertion pipe 701 and the liquid return pipe 6 form a liquid return channel, and used flushing liquid is recovered, and the liquid return pipe 6 is a hose.

FIG. 4 is a schematic block diagram of the irrigant bag of the adjustable speed negative pressure cycling injector device of FIG. 1; FIG. 5 is a schematic block diagram of the negative pressure aspirator of the adjustable speed negative pressure circulation syringe apparatus shown in FIG. 1. In the above embodiment, the aspiration tube 9 is optionally connected to the irrigation fluid bag 15 through a needle for delivering irrigation fluid. The liquid return pipe 6 is connected with a negative pressure suction apparatus 16, the pressure suction apparatus 16 is connected with a vessel, the pressure suction apparatus 16 provides negative pressure and is used for withdrawing used flushing liquid and putting the used flushing liquid into the vessel, the structure is reasonable, the flushing liquid bag 15 can be replaced conveniently, and the used flushing liquid can be cleaned conveniently.

Referring to fig. 2, in the above embodiment, optionally, the tail of the liquid outlet check valve 11 may also be in a shape of a waist drum or a sphere, and the tail of the liquid pumping check valve 12 may also be in a shape of a waist drum or a sphere, where the second inverse cone 1201 is the shape of the tail of the liquid pumping check valve 12. The liquid outlet one-way valve 11 is umbrella-shaped; the liquid-extracting one-way valve 12 is umbrella-shaped. The liquid outlet one-way valve 11 and the liquid pumping one-way valve 12 have good opening and closing effects.

Referring to fig. 1, in the above embodiment, the driving means may alternatively generally include a driving bevel gear 3 and a driven gear 4. The driven gear 4 and the driving bevel gear 3 are meshed with each other, a central hole is formed in the middle of the driven gear 4 and connected with the shell 1 through a shaft 10, and the driven gear 4 and the driving bevel gear 3 are both conventional. The top surface of the driven gear 4 is provided with an eccentric ring 41, and the eccentric ring 41 is connected with the kidney-shaped ring 503 in a sliding way.

Referring to fig. 1, in the above embodiment, optionally, the electrical device may generally include a dc motor 2, a position switch 13 and a battery box (not labeled). The direct current motor 2, the gear switch 13 and the direct current motor 2 are electrically connected through a circuit, and the battery box and the gear switch 13 are electrically connected through a circuit to achieve power supply. The rotor of the direct current motor 2 is tightly matched and fixedly connected with the driving bevel gear 3 so as to control the driving bevel gear 3 to rotate.

FIG. 3 is a cross-sectional view of the ejector tube of the adjustable speed negative pressure recirculating syringe apparatus of FIG. 1. In one embodiment, the injection pipe 14 is further included, and the injection pipe 14 is in a first pattern or a second pattern: wherein the first pattern includes: a cap 142, a wide tube 144, and a narrow tube 146. The cover 142 is connected with the housing 1 through a screw thread or a snap connection, so that the cover is convenient to disassemble and assemble, the cover 142 is provided with a cavity 141 and a third through hole 143, and the cavity 141 is communicated with the other end 705 of the first cannula 701. Optionally, the cover 142 is made of plastic or nylon, and is shaped to fit the housing 1. The first end 145 of the wide tube 144 may be integrally formed with or separately formed from the third through hole 143, and may be sealed, and the narrow tube 146 may be positioned inside the wide tube 144. Specifically, the first end 147 of the thin tube 146 is in adhesive communication with the other end 704 of the second cannula 702 to form a liquid outlet channel, and the second end 148 of the thin tube 146 is close to the affected part for spraying the washing liquid to wash the affected part. The wide tube 144 forms a fluid return path with the lumen 141 and the other end 705 of the first cannula 701, and the second end 149 of the wide tube 144 is adjacent to the affected area for recovering the used irrigant. The affected part cleaning device is convenient and fast to clean, simple in structure and easy to operate. The second pattern includes: a first tube (not shown) and a second tube (not shown), the first tube is communicated with the other end 705 of the first cannula 701 for recycling the used washing liquid. A second tube is coupled to the other end 704 of the second cannula 702 for delivering irrigation fluid. The operation is convenient, the structure is reasonable, and the replacement is convenient and the like.

FIG. 6 is a schematic block diagram of the speed regulating structure of the speed adjustable negative pressure cycling injection flusher device shown in FIG. 1. In one embodiment, the speed regulation structure comprises a first speed regulation circuit and/or a second speed regulation circuit, comprising a first line 19, a second line 20, a third line 21 and a fourth line 22. The first speed regulation loop is that the gear switch 13 is connected with the first battery pack 17 and the second battery pack 18 through a first line 19, the second battery pack 18 is connected with the direct current motor 2 through a second line 20, and the direct current motor 2 is connected with the gear switch 13 through a third line 21 and used for increasing the rotating speed. The second speed regulating loop is that the gear switch 13 is connected with the second battery pack 18 through a fourth line 22, the second battery pack 18 is connected with the direct current motor 2 through the second line 20, and the direct current motor 2 is connected with the gear switch 13 through a third line 21 and used for reducing the rotating speed. The speed regulation is realized, and the connection modes are all the existing connection modes. The first battery pack 17 and the second battery pack 18 are each four batteries and are connected in series.

Specifically, the method comprises the following steps: the reciprocating injection device comprises: plunger 5, injection cavity 8, plug connector 7, play liquid check valve 11 and draw liquid check valve 12. The injection cavity 8 is a three-way special-shaped transparent plastic part, the plug connector 7 is a two-position four-way transparent plastic part, and the two-position four-way is in a round pipe shape. The first cannula 701 is arranged in the first channel 801 at the front end of the injection cavity 8 and communicated to form a liquid passing channel, and the second cannula 702 of the plug-in unit 7 is connected with the liquid return pipe 6 to form a liquid return channel. The second channel 802 at the rear end of the injection cavity 8 is connected with the liquid extracting tube 9 to form a liquid extracting channel. The plug 502 of the plunger 5 can be linearly drawn back and forth in the third channel 803 of the injection chamber 8. The liquid outlet one-way valve 11 is umbrella-shaped, the tail part of the liquid outlet one-way valve is provided with an inverted cone shape 1101 as a limiting structure, and the liquid outlet one-way valve 11 is arranged in a first channel 801 at the front end of the injection cavity 8. The liquid-pumping one-way valve 12 is umbrella-shaped, the tail part of the liquid-pumping one-way valve is provided with an inverted cone shape 1201 as a limiting structure, and the liquid-pumping one-way valve 12 is arranged in a second passage 802 at the rear end of the injection cavity 8.

Preferably, the liquid outlet one-way valve 11 and the liquid pumping one-way valve 12 are both made of elastic rubber or soft plastic.

Preferably, the drive means comprises a drive bevel gear 3 and a driven gear 4. The driving bevel gear 3 and the driven wheel 4 are meshed with each other, the top surface of the driven gear 4 is provided with an eccentric ring 41, the eccentric ring 41 is sleeved with a kidney-shaped ring 503 at one end of the plunger 5, the eccentric ring 41 is in sliding connection with the kidney-shaped ring 503, the driven gear 4 is provided with a central hole, and the central hole is connected with a shaft hole at the corresponding part of the shell 1 through a shaft 10.

Preferably, the electrical device comprises a direct current motor 2, a range switch 13 and a battery box. DC motor 2 is connected with the battery case through gear switch 13, and the battery case provides DC power supply for DC motor 2, and gear switch 13 control DC motor 2 opens and stops and the rotational speed switches, DC motor 2's rotor and drive bevel gear 3 fixed connection.

Preferably, the front end of the housing 1 is provided with a spraying pipe, the spraying pipe is connected with the first insertion pipe 701 and the second insertion pipe 702 of the plug-in unit 7, and the spraying pipe comprises a scattering spraying pipe and a direct spraying pipe which are connected and acts on an affected part.

The electric appliance device provides power and control, the driving device drives the reciprocating injection device to realize the extraction and injection of the flushing liquid, and the device has the characteristics of compact structure, simple and accurate transmission, stable flow and pressure, convenience in use and high reliability.

When in specific use:

the gear switch 13 is turned on, the direct current motor 2 is powered on to operate, the shaft of the direct current motor 2 drives the bevel gear 3 to rotate, the bevel gear 3 is driven to drive the driven gear 4 to rotate, the driven gear 4 converts the rotary motion into the linear reciprocating motion of the plunger 5 through the eccentric ring 41 and the kidney-shaped ring 503 mechanism of the plunger 5, when the plunger 5 moves towards the direction close to the direct current motor 2, the increased pressure in the injection cavity 8 is reduced, the liquid pumping one-way valve 12 is opened under the liquid pressure, the liquid outlet one-way valve 11 is closed under the atmospheric pressure and the self elastic pressure, and the liquid flows into the injection cavity 8 through the liquid pumping one-way valve 12 to be stored.

When the plunger 5 moves in the direction away from the direct current motor 2, the plunger 5 pushes the stored liquid in the injection cavity 8 at the moment, the stored liquid applies pressure to the liquid pumping one-way valve 12 to close the liquid pumping one-way valve, the liquid outlet one-way valve 11 is opened under the pushing pressure of the stored liquid, so that the stored liquid is injected out from the liquid channel, and then liquid flow is formed through the injection pipe, so that certain pressure, certain flow speed and certain flow rate are achieved, the plunger 5 runs alternately, the flushing liquid is continuously pumped into the injection cavity 8 and then is injected out from the injection cavity 8, and the rapid circulating type flushing is achieved.

More specifically:

1. the liquid outlet one-way valve 11 and the liquid pumping one-way valve 12 are umbrella-shaped, the structural design is ingenious, and the action is stable and reliable.

2. The liquid outlet one-way valve 11 and the liquid pumping one-way valve 12 are both made of elastic rubber or soft plastic.

3. The injection cavity 8 and the plug connector 7 are both in transparent design, the internal condition is clear and visible, and observation and detection are convenient.

4. The liquid outlet one-way valve 11 and the liquid pumping one-way valve 12 are umbrella-shaped, and the tail part of the valve is provided with an inverted cone shape as a limiting structure, so that the one-way valve is ensured to be fixed and sealed, the resetting is reliable, and the stability and reliability of the liquid outlet amount are ensured.

5. The plug 502 in the third channel 803 of the injection cavity 8 has a guiding function, so that the movement track of the plug 502 is stable, and the matching mechanism of the kidney-shaped ring 503 and the eccentric ring 41 is simple, flexible, stable and reliable.

6. The eccentric ring 41 structure is designed into a hollow ring shape, so that the mass is reduced, the inertia interference is reduced, the motion is stable and efficient, the material is saved, and the cost is reduced on the premise of ensuring the strength and the function.

8. The direct current motor 2 adopts high rotating speed, and the injection device adopts stable and reliable short stroke design, thereby forming an optimized liquid-less high-frequency liquid-pumping, liquid-storing and injection circulating mechanism, realizing high flow and high speed, large pressure and long jet distance, and further achieving good flushing effect.

9. The electric control device consists of a battery pack, a gear switch 13, a direct current motor 2 and wires, wherein the battery pack provides a power supply, the gear switch 13 controls high-low gear conversion and start-stop, and when a half battery pack is switched on, the direct current motor 2 runs at a low speed and a low gear to provide low flow, low flow speed, low pressure and near-shooting distance; when high-grade is connected, the motor has high rotating speed and runs in high grade, and high flow, high flow speed, high pressure and long shooting distance are provided; and stopping running when the gear is in the middle position.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. 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. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (6)

1. A speed-adjustable negative pressure circulation injection type flusher is characterized by comprising:

a housing (1);

a reciprocating injection device installed inside the housing (1) for reciprocally drawing and injecting a washing liquid;

the reciprocating injection device comprises:

a plunger (5) comprising a cross-bar (501), a plug (502) and a kidney ring (503) which are integrally formed;

an injection cavity (8) having a first channel (801), a second channel (802) and a third channel (803) communicating with each other;

the plug connector (7) comprises a fixing plate (703), the fixing plate (703) is fixedly connected with the shell (1), the fixing plate (703) is provided with a first through hole and a second through hole, a first insertion pipe (701) is fixed to the first through hole, a second insertion pipe (702) is fixed to the second through hole, and one end of the second insertion pipe (702) is inserted into the first channel (801) and communicated with the first channel;

an extraction check valve (12) mounted inside the second channel (802);

a liquid outlet one-way valve (11) arranged inside the first channel (801);

wherein the plug (502) is positioned inside the third channel (803) and used for reciprocating inside the third channel (803) so that the liquid pumping one-way valve (12) is opened and closed, the liquid outlet one-way valve (11) is closed and opened, and the flushing liquid enters the second channel (802) and is discharged from the first channel (801);

a liquid extracting pipe (9) is connected to the end part of the second channel (802), the second channel (802) and the liquid extracting pipe (9) form a liquid extracting channel, and the liquid extracting pipe (9) is connected with a flushing liquid bag (15);

a liquid return pipe (6) is connected to one end of the first insertion pipe (701), the first insertion pipe (701) and the liquid return pipe (6) form a liquid return channel, and the liquid return pipe (6) is connected with a negative pressure suction apparatus (16);

a drive means mounted inside the housing (1) and connected to the reciprocating injection means, the drive means comprising:

a drive bevel gear (3); and

the driven gear (4) is meshed with the driving bevel gear (3), a central hole is formed in the middle of the driven gear (4), and the central hole is connected with the shell (1) through a shaft (10);

the top surface of the driven gear (4) is provided with an eccentric ring (41), and the eccentric ring (41) is connected with the waist-shaped ring (503) in a sliding manner;

an electrical device located inside the housing (1) and connected to the drive means, the electrical device comprising:

a direct current motor (2);

a selector switch (13) connected to the DC motor (2); and

a battery case connected to the inhibitor switch (13), and having a first battery pack (17) and a second battery pack (18) connected in series mounted therein;

the first speed regulating circuit and/or the second speed regulating circuit;

the first speed regulating circuit is characterized in that the gear switch (13) is connected with the first battery pack (17) and the second battery pack (18) through a first line (19), the second battery pack (18) is connected with the direct current motor (2) through a second line (20), and the direct current motor (2) is connected with the gear switch (13) through a third line (21) and used for regulating the rotating speed;

the second speed regulating loop is characterized in that the gear switch (13) is connected with the second battery pack (18) through a fourth line (22), the second battery pack (18) is connected with the direct current motor (2) through a second line (20), and the direct current motor (2) is connected with the gear switch (13) through a third line (21) and used for reducing the rotating speed.

2. The adjustable speed negative pressure cyclic injection irrigator of claim 1, wherein:

the tail part of the liquid outlet one-way valve (11) is in a first inverted cone shape (1101), or is in a waist drum shape or a spherical shape;

the tail part of the liquid pumping one-way valve (12) is in a second inverted cone shape (1201) or a waist drum shape or a spherical shape.

3. The adjustable speed negative pressure cyclic injection irrigator of claim 2, wherein:

the liquid outlet one-way valve (11) is umbrella-shaped; the liquid-pumping one-way valve (12) is umbrella-shaped.

4. The adjustable speed negative pressure cyclic injection irrigator of claim 1, wherein:

and the rotor of the direct current motor (2) is fixedly connected with the driving bevel gear (3).

5. The adjustable speed negative pressure cyclic injection irrigator of claim 1, wherein:

the first channel (801) is arranged coaxially with the second cannula (702).

6. The adjustable speed negative pressure cyclical injection syringe of any one of claims 1 to 5, further comprising an injection tube (14), the injection tube (14) comprising:

a cover (142) connected to the housing (1) and having a cavity (141) and a third through hole (143), the cavity (141) communicating with the other end (705) of the first cannula (701);

a thick tube (144), a first end (145) of the thick tube (144) and the third through hole (143) being integrally or separately configured; and

a thin tube (146) located inside the thick tube (144);

wherein, the first end (147) of the tubule (146) is communicated with the other end (704) of the second cannula (702) to form a liquid outlet channel, and the second end (148) of the tubule (146) is close to the affected part for spraying the flushing liquid;

the thick tube (144) forms a liquid return channel with the cavity (141) and the other end (705) of the first cannula (701), and the second end (149) of the thick tube (144) is close to the affected part for recovering the used flushing liquid.

Images