CN216855393U - Gun type flushing aspirator - Google Patents

Abstract

The utility model discloses a gun type irrigation aspirator, which comprises a handheld body, a core tube, an insertion tube, a poking piece, a first elastic piece, a first sleeve, a second elastic piece and a second sleeve, wherein the core tube is arranged on the handheld body; the handheld body is internally provided with a front sealing channel, a front mounting channel, a rear sealing channel and a rear mounting channel which are sequentially arranged from front to back and are sequentially communicated; the handheld body is also internally provided with a front outward channel and a rear outward channel which are communicated with the rear sealing channel; one end of the insertion tube is connected to the handheld body and communicated with the front sealing channel; the front end part of the core tube is hermetically and slidably matched in the front sealed channel, and the rear end part of the core tube is hermetically and slidably matched in the rear sealed channel; a flow guide hole which is arranged along the axial direction of the core tube and communicated with the front sealing channel is arranged in the core tube; and the cylindrical pipe wall of the core pipe is provided with a butt joint hole communicated with the flow guide hole. The utility model has simple structure, can reduce the manufacturing cost and improve the use convenience.

Description

Gun type flushing aspirator

Technical Field

The utility model relates to a gun type irrigation aspirator.

Background

Currently, a flushing aspirator is a medical apparatus for flushing the abdominal cavity of a patient, and the flushing aspirator needs to have two functions of spraying a cleaning fluid into the abdominal cavity and sucking out the cleaning fluid in the abdominal cavity. However, the existing irrigation aspirator has the disadvantages of complex structure, high manufacturing cost and inconvenient use.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a gun type irrigation aspirator which has a simple structure, can reduce the manufacturing cost and improve the use convenience.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a gun type irrigation aspirator comprises a hand-held body, a core tube, an insertion tube, a stirring piece, a first elastic piece, a first sleeve, a second elastic piece and a second sleeve; wherein the content of the first and second substances,

the handheld body is internally provided with a front sealing channel, a front mounting channel, a rear sealing channel and a rear mounting channel which are sequentially arranged from front to back and are sequentially communicated;

the handheld body is also provided with a front outward channel and a rear outward channel which are communicated with the rear sealing channel;

one end of the insertion tube is connected to the handheld body and communicated with the front sealing channel;

the front end part of the core tube is hermetically and slidably matched in the front sealed channel, and the rear end part of the core tube is hermetically and slidably matched in the rear sealed channel;

a flow guide hole which is arranged along the axial direction of the core tube and communicated with the front sealing channel is arranged in the core tube;

the cylindrical pipe wall of the core pipe is provided with a butt joint hole communicated with the flow guide hole;

the core tube is provided with a front conduction position, a blocking position and a rear conduction position which are sequentially arranged from front to back in the process of sliding relative to the handheld body, the butt joint hole is aligned and communicated with the front external channel when the core tube slides to the front conduction position, the butt joint hole is aligned and communicated with the rear external channel when the core tube slides to the rear conduction position, and the butt joint hole is matched with the inner wall of the rear sealing channel and blocked by the inner wall of the rear sealing channel when the core tube slides to the blocking position;

the poking piece is connected with the core tube and is suitable for being poked to drive the core tube to slide among the front conducting position, the plugging position and the rear conducting position;

the core tube is provided with a first abutting part and a second abutting part;

the first resilient member and the first sleeve are mounted in the front mounting channel;

one end of the first elastic piece abuts against the handheld body, the other end of the first elastic piece abuts against one end of the first sleeve, the other end of the first sleeve abuts against the first abutting part, and the first elastic piece is suitable for driving the first sleeve to move backwards so as to drive the core pipe to move backwards to the blocking position;

the handheld body is also provided with a first limiting part which is abutted against the first sleeve to limit the first sleeve to continuously move backwards when the first sleeve moves backwards and drives the core pipe to move backwards to the plugging position;

the second resilient member and the second sleeve are both mounted in the rear mounting channel;

one end of the second elastic piece abuts against the handheld body, the other end of the second elastic piece abuts against one end of the second sleeve, the other end of the second sleeve abuts against the second abutting part, and the second elastic piece is suitable for driving the second sleeve to move forwards so as to drive the core tube to move forwards to the blocking position;

and a second limiting part which is abutted against the second sleeve to limit the second sleeve to move forwards continuously when the second sleeve moves forwards and drives the core tube to move forwards to the plugging position is further arranged in the handheld body.

Further, the gun type irrigation aspirator also comprises a negative pressure joint and an irrigation joint, wherein the negative pressure joint is suitable for being connected with a negative pressure source through a pipeline, and the irrigation joint is suitable for being connected with irrigation liquid through a pipeline; wherein the content of the first and second substances,

the flushing joint is connected to the handheld body and communicated with any one of the front outward channel and the rear outward channel;

the negative pressure fitting is connected to the hand-held body and communicates with the remaining one of the front outward passage and the rear outward passage.

Further provides a specific structure of the handheld body, wherein the handheld body comprises a main pipe part, a pipe head, a handheld part and an end cover; wherein the content of the first and second substances,

the pipe head is connected to the front end part of the main pipe part, the front sealing channel is arranged in the pipe head, and the front mounting channel, the rear sealing channel, the rear mounting channel, the front outward channel and the rear outward channel are all arranged in the main pipe part;

the hand holding part is connected to the main pipe part;

the end cap is connected to the rear end of the main pipe portion and adapted to cover the rear mounting channel;

the insertion tube is connected to the tip of the tip.

Further, the first sleeve is sleeved on the outer side of the core pipe;

the front end part of the first elastic part is abutted against the pipe head;

the rear end part of the first elastic part is abutted against the front end face of the first sleeve;

the first abutting part is suitable for abutting against the inner ring of the rear end face of the first sleeve;

the first limiting part is suitable for abutting against an outer ring of the rear end face of the first sleeve.

Further, the rear end part of the second elastic part is abutted against the end cover;

the front end part of the second elastic part is abutted against the rear end face of the second sleeve;

the second abutting part is suitable for abutting against the inner ring of the front end face of the second sleeve;

the second limiting part is suitable for abutting against an outer ring of the front end face of the second sleeve.

Further provides a concrete structure of the toggle piece, wherein the toggle piece comprises a rod part and a fork part;

one end part of the rod part is connected to the core pipe;

the fork part is connected on the other end of pole portion, the fork part is located the outside of handheld body and be equipped with the finger groove that supplies the finger to stretch into in the fork part.

Further, a waist-shaped groove is formed in the main pipe portion, and the rod portion penetrates through the waist-shaped groove and then is connected with the core pipe.

Further, a U-shaped groove is formed in the first sleeve, and the rod portion penetrates through the waist-shaped groove and the U-shaped groove in sequence and then is connected with the core pipe.

Further provides a concrete structure of the core tube, wherein a first ring groove, a second ring groove, a third ring groove and a fourth ring groove are arranged on the outer tube wall of the core tube; wherein the content of the first and second substances,

the first ring groove, the second ring groove, the third ring groove and the fourth ring groove are sequentially arranged from front to back, and the butt joint hole is positioned between the second ring groove and the third ring groove;

o-shaped rings suitable for being in sealing and abutting connection with the inner wall of the rear sealing channel are respectively arranged in the first annular groove, the second annular groove, the third annular groove and the fourth annular groove;

when the core tube is located at the front guide-through position, the front outward passage is located between the second ring groove and the third ring groove, and the rear outward passage is located between the third ring groove and the fourth ring groove;

when the core tube is located at the rear conduction position, the front outward channel is located between the first ring groove and the second ring groove, and the rear outward channel is located between the second ring groove and the third ring groove;

when the core pipe is located the shutoff position, preceding external passageway is in between first annular with the second annular, back external passageway is in between third annular with the fourth annular.

Further, the device also comprises a sealing ring; wherein the content of the first and second substances,

the sealing ring is arranged on the outer pipe wall of the front end part of the core pipe, and the sealing ring is in sealing butt joint with the front sealing channel.

After the technical scheme is adopted, the front external channel is connected with flushing fluid which can be normal saline, and the rear external channel is connected with a negative pressure source; when the toggle piece is toggled forwards, the core pipe moves forwards to the front guide position, and the first abutting part abuts against the first sleeve and drives the first sleeve to move forwards by overcoming the elasticity of the first elastic piece; at the moment, the butt joint hole is aligned and communicated with the front external channel, and flushing fluid sequentially flows through the front external channel, the butt joint hole, the flow guide hole, the front sealing channel and the insertion tube to flush the abdominal cavity of the human body. Then when the toggle piece is loosened, the first elastic piece drives the first sleeve to move backwards, the first sleeve props against the first abutting part and drives the core tube to move backwards to the blocking position, and at the moment, the first limiting part props against the first sleeve to limit the first sleeve to continue moving backwards, so that the core tube stays at the blocking position.

When the toggle piece is toggled backwards, the core pipe moves backwards to the rear conduction position, and the second abutting part abuts against the second sleeve and drives the second sleeve to move backwards by overcoming the elasticity of the second elastic piece; at the moment, the butt joint hole is aligned and communicated with the rear outward channel, and flushing liquid in the abdominal cavity flows through the insertion pipe, the front sealing channel, the flow guide hole, the butt joint hole and the rear outward channel in sequence under the action of the negative pressure source and is sucked away. Then when the toggle piece is released, the second elastic piece drives the second sleeve to move forwards, the second sleeve props against the second abutting part and drives the core tube to move forwards to the plugging position, and at the moment, the second limiting part props against the second sleeve to limit the second sleeve to move forwards continuously, so that the core tube stays at the plugging position. The stirring piece is stirred forwards and backwards to flush the abdominal cavity and suck away liquid in the abdominal cavity, so that the use is very convenient, the gun type structure is more convenient to hold and take, and the use is more smooth; and the core tube is matched with the handheld body to realize two functions of flushing the abdominal cavity and sucking away liquid in the abdominal cavity, so that the whole structure is simpler, the manufacturing cost is reduced, and the manufacturing and assembling processes are simplified.

Drawings

FIG. 1 is a schematic view of the external structure of a gun-type irrigation aspirator according to the present invention;

FIG. 2 is a schematic structural diagram of a handheld body according to the present invention;

FIG. 3 is a schematic view of the core tube of the present invention;

FIG. 4 is a schematic view of the core tube of the gun-type irrigation aspirator of the present invention in the sealing position;

FIG. 5 is a schematic view of the core tube of the gun-type irrigation aspirator of the present invention in a front venting position;

FIG. 6 is a schematic view of the core tube of the gun-type irrigation aspirator in the rear conducting position according to the present invention.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As shown in fig. 1 to 6, a gun-type irrigation aspirator comprises a hand-held body 1, a core tube 2, an insertion tube 3, a toggle piece 4, a first elastic piece 5, a first sleeve 6, a second elastic piece 7 and a second sleeve 8; wherein the content of the first and second substances,

the handheld body 1 is internally provided with a front sealing channel 9, a front mounting channel 10, a rear sealing channel 11 and a rear mounting channel 12 which are sequentially arranged from front to back and are sequentially communicated;

a front outward channel 13 and a rear outward channel 14 which are communicated with the rear sealing channel 11 are also arranged in the handheld body 1;

one end part of the insertion tube 3 is connected to the handheld body 1 and communicated with the front sealing channel 9, and the insertion tube 3 is suitable for extending into the abdominal cavity of a human body;

the front end part of the core tube 2 is hermetically and slidably matched in the front sealing channel 9, and the rear end part of the core tube 2 is hermetically and slidably matched in the rear sealing channel 11;

a flow guide hole 15 which is arranged along the axial direction of the core tube 2 and is communicated with the front sealing channel 9 is arranged in the core tube 2;

the cylindrical pipe wall of the core pipe 2 is provided with a butt joint hole 16 communicated with the diversion hole 15;

the core tube 2 has a front conducting position, a blocking position and a rear conducting position which are sequentially arranged from front to back in the process of sliding relative to the handheld body 1, when the core tube 2 slides to the front conducting position, the butt joint hole 16 is in alignment communication with the front outward channel 13, when the core tube 2 slides to the rear conducting position, the butt joint hole 16 is in alignment communication with the rear outward channel 14, and when the core tube 2 slides to the blocking position, the butt joint hole 16 is matched with the inner wall of the rear sealing channel 11 and blocked by the inner wall of the rear sealing channel 11;

the toggle piece 4 is connected with the core tube 2 and is suitable for being toggled to drive the core tube 2 to slide among the front conduction position, the blocking position and the rear conduction position;

a first abutting part 17 and a second abutting part 18 are arranged on the core tube 2;

the first elastic element 5 and the first sleeve 6 are mounted in the front mounting channel 10;

one end of the first elastic piece 5 abuts against the handheld body 1, the other end of the first elastic piece 5 abuts against one end of the first sleeve 6, the other end of the first sleeve 6 abuts against the first abutting part 17, and the first elastic piece 5 is suitable for driving the first sleeve 6 to move backwards so as to drive the core pipe 2 to move backwards to the blocking position;

the handheld body 1 is further provided with a first limiting part 19 which abuts against the first sleeve 6 to limit the first sleeve 6 to continuously move backwards when the first sleeve 6 moves backwards and drives the core tube 2 to move backwards to the plugging position;

the second elastic piece 7 and the second sleeve 8 are both mounted in the rear mounting channel 12;

one end of the second elastic part 7 abuts against the handheld body 1, the other end of the second elastic part 7 abuts against one end of the second sleeve 8, the other end of the second sleeve 8 abuts against the second abutting part 18, and the second elastic part 7 is suitable for driving the second sleeve 8 to move forward so as to drive the core pipe 2 to move forward to the blocking position;

the handheld body 1 is further provided with a second limiting part 20 which abuts against the second sleeve 8 to limit the second sleeve 8 to move forwards continuously when the second sleeve 8 moves forwards and drives the core tube 2 to move forwards to the plugging position.

In this embodiment, the gun-type irrigation aspirator may further comprise a negative pressure connector 21 adapted to be connected to a negative pressure source through a pipeline and an irrigation connector 22 adapted to be connected to an irrigation liquid through a pipeline; wherein the content of the first and second substances,

the flushing joint 22 is connected to the hand-held body 1 and is communicated with any one of the front outward passage 13 and the rear outward passage 14;

the negative pressure joint 21 is connected to the handheld body 1 and communicated with the remaining one of the front outward passage 13 and the rear outward passage 14; in this embodiment, the front outer channel 13 is connected to a flushing fluid, which may be physiological saline, and the rear outer channel 14 is connected to a negative pressure source; wherein the content of the first and second substances,

as shown in fig. 5, when the toggle member 4 is toggled forward, the core tube 2 moves forward to the front guiding position, and the first abutting portion 17 abuts against the first sleeve 6 and drives the first sleeve 6 to move forward against the elastic force of the first elastic member 5; at this time, the butt joint hole 16 is aligned and communicated with the front outward channel 13, and the flushing liquid flows through the front outward channel 13, the butt joint hole 16, the diversion hole 15, the front sealing channel 9 and the insertion tube 3 in sequence to flush the abdominal cavity of the human body. Then when the toggle element 4 is released, the first elastic element 5 drives the first sleeve 6 to move backwards, the first sleeve 6 abuts against the first abutting portion 17 and drives the core tube 2 to move backwards to the blocking position, and at this time, the first limiting portion 19 abuts against the first sleeve 6 to limit the first sleeve 6 to move backwards continuously, so that the core tube 2 stays at the blocking position.

As shown in fig. 6, when the toggle member 4 is toggled backwards, the core tube 2 moves backwards to the back conducting position, and the second abutting portion 18 abuts against the second sleeve 8 and drives the second sleeve 8 to move backwards against the elastic force of the second elastic member 7; at this time, the docking hole 16 is aligned and communicated with the rear outward passage 14, and flushing fluid in the abdominal cavity is sucked away after sequentially flowing through the insertion tube 3, the front sealing passage 9, the flow guide hole 15, the docking hole 16 and the rear outward passage 14 under the action of a negative pressure source. Then when the toggle member 4 is released, the second elastic member 7 drives the second sleeve 8 to move forward, the second sleeve 8 abuts against the second abutting portion 18 and drives the core tube 2 to move forward to the blocking position, and at this time, the second limiting portion 20 abuts against the second sleeve 8 to limit the second sleeve 8 to move forward, so that the core tube 2 stays at the blocking position. The stirring piece 4 is stirred forwards and backwards to flush the abdominal cavity and suck away liquid in the abdominal cavity, so that the use is very convenient, and the gun type structure is more convenient to hold and take and is more smooth to use; and the core tube 2 is matched with the handheld body 1 to realize two functions of flushing the abdominal cavity and sucking away liquid in the abdominal cavity, so that the whole structure is simpler, the manufacturing cost is reduced, and the manufacturing and assembling processes are simplified.

As shown in fig. 1 to 6, the hand-held body 1 includes, for example but not limited to, a main tube part 23, a tube head 24, a hand-held part 25, and an end cap 26; wherein the content of the first and second substances,

the pipe head 24 is connected to the front end part of the main pipe part 23, the front sealing passage 9 is arranged in the pipe head 24, and the front mounting passage 10, the rear sealing passage 11, the rear mounting passage 12, the front outward passage 13 and the rear outward passage 14 are all arranged in the main pipe part 23;

the hand holding portion 25 is connected to the main pipe portion 23;

the end cap 26 is attached to the rear end portion of the main tube portion 23 and adapted to cover the rear mounting channel 12;

the insertion tube 3 is connected to the tip of the ferrule 24; in this embodiment, the negative pressure connector 21 and the flushing connector 22 are also connected to the main pipe portion 23, respectively, the pipe head 24 is screwed to the front end portion of the main pipe portion 23, and the end cap 26 is screwed to the rear end portion of the main pipe portion 23.

As shown in fig. 2 to 6, the first sleeve 6 is sleeved on the outer side of the core tube 2;

the front end of the first elastic member 5 abuts against the ferrule 24;

the rear end part of the first elastic part 5 is abutted against the front end surface of the first sleeve 6;

the first abutment 17 is adapted to abut against an inner ring of the rear end face of the first sleeve 6;

the first stopper 19 is adapted to abut against an outer ring of the rear end surface of the first sleeve 6.

As shown in fig. 2 to 6, the rear end of the second elastic element 7 abuts against the end cap 26;

the front end part of the second elastic part 7 is abutted against the rear end surface of the second sleeve 8;

the second abutment 18 is adapted to abut against an inner ring of the front end face of the second sleeve 8;

the second limiting part 20 is suitable for abutting against the outer ring of the front end face of the second sleeve 8; in this embodiment, the first elastic member 5 and the second elastic member 7 may be springs, respectively, and the first elastic member 5 is sleeved outside the core tube 2. Specifically, the first abutting portion 17 and the second abutting portion 18 may be steps provided on the outer tube wall of the core tube 2, and the first stopper portion 19 and the second stopper portion 20 may be steps provided on the inner wall of the main tube portion 23.

As shown in fig. 1, 3 and 4, the toggle member 4 may include a rod portion 27 and a fork portion 28;

one end of the rod 27 is connected to the core tube 2;

the fork 28 is connected to the other end of the rod 27, the fork 28 is located outside the hand-held body 1, and a finger groove 29 for fingers to extend into is provided in the fork 28.

As shown in fig. 1 to 6, a waist-shaped groove 30 is formed on the main tube portion 23, a U-shaped groove 31 is formed on the first sleeve 6, and the rod portion 27 sequentially passes through the waist-shaped groove 30 and the U-shaped groove 31 and then is connected to the core tube 2; specifically, the length directions of the waist-shaped groove 30 and the U-shaped groove 31 are both arranged along the axial direction of the core tube 2.

As shown in fig. 3 to 6, the outer tube wall of the core tube 2 may be provided with a first ring groove 32, a second ring groove 33, a third ring groove 34 and a fourth ring groove 35; wherein the content of the first and second substances,

the first ring groove 32, the second ring groove 33, the third ring groove 34 and the fourth ring groove 35 are sequentially arranged from front to back, and the butt joint hole 16 is positioned between the second ring groove 33 and the third ring groove 34;

the first ring groove 32, the second ring groove 33, the third ring groove 34 and the fourth ring groove 35 are respectively provided with an O-shaped ring which is suitable for being in sealing and abutting joint with the inner wall of the rear sealing channel 11;

when the core tube 2 is located at the front communicating position, the front outward passage 13 is located between the second ring groove 33 and the third ring groove 34, and the rear outward passage 14 is located between the third ring groove 34 and the fourth ring groove 35;

when the core tube 2 is located at the rear conducting position, the front outward passage 13 is located between the first ring groove 32 and the second ring groove 33, and the rear outward passage 14 is located between the second ring groove 33 and the third ring groove 34;

when the core tube 2 is located at the blocking position, the front outward passage 13 is located between the first annular groove 32 and the second annular groove 33, and the rear outward passage 14 is located between the third annular groove 34 and the fourth annular groove 35.

As shown in fig. 3-6, the gun-type irrigation aspirator may further include a sealing ring 36; wherein the content of the first and second substances,

the seal ring 36 is mounted on the outer tube wall of the front end portion of the core tube 2, and the seal ring 36 is in sealing contact with the front seal passage 9 so that the front end portion of the core tube 2 is sealingly and slidably fitted in the front seal passage 9.

The working principle of the utility model is as follows:

the front external channel 13 is connected with a flushing liquid, the flushing liquid can be normal saline, and the rear external channel 14 is connected with a negative pressure source; when the toggle element 4 is toggled forwards, the core tube 2 moves forwards to the front guide position, and the first abutting part 17 abuts against the first sleeve 6 and drives the first sleeve 6 to move forwards by overcoming the elasticity of the first elastic element 5; at this time, the docking hole 16 is aligned and communicated with the front outward channel 13, and the flushing liquid flows through the front outward channel 13, the docking hole 16, the diversion hole 15, the front sealing channel 9 and the insertion tube 3 in sequence to flush the abdominal cavity of the human body. Then, when the toggle member 4 is released, the first elastic member 5 drives the first sleeve 6 to move backward, the first sleeve 6 abuts against the first abutting portion 17 and drives the core tube 2 to move backward to the plugging position, and at this time, the first limiting portion 19 abuts against the first sleeve 6 to limit the first sleeve 6 to move backward continuously, so that the core tube 2 stays at the plugging position.

When the toggle element 4 is toggled backwards, the core tube 2 moves backwards to the rear conduction position, and the second abutting part 18 abuts against the second sleeve 8 and drives the second sleeve 8 to move backwards by overcoming the elasticity of the second elastic element 7; at this time, the docking hole 16 is aligned and communicated with the rear outward passage 14, and flushing fluid in the abdominal cavity is sucked away after sequentially flowing through the insertion tube 3, the front sealing passage 9, the flow guide hole 15, the docking hole 16 and the rear outward passage 14 under the action of a negative pressure source. Then when the toggle member 4 is released, the second elastic member 7 drives the second sleeve 8 to move forward, the second sleeve 8 abuts against the second abutting portion 18 and drives the core tube 2 to move forward to the blocking position, and at this time, the second limiting portion 20 abuts against the second sleeve 8 to limit the second sleeve 8 to move forward, so that the core tube 2 stays at the blocking position. The stirring piece 4 is stirred forwards and backwards to flush the abdominal cavity and suck away liquid in the abdominal cavity, so that the use is very convenient, and the gun type structure is more convenient to hold and take and is more smooth to use; and the core tube 2 is matched with the handheld body 1 to realize two functions of flushing the abdominal cavity and sucking away liquid in the abdominal cavity, so that the whole structure is simpler, the manufacturing cost is reduced, and the manufacturing and assembling processes are simplified.

The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A gun type irrigation aspirator is characterized by comprising a handheld body (1), a core tube (2), an insertion tube (3), a poking piece (4), a first elastic piece (5), a first sleeve (6), a second elastic piece (7) and a second sleeve (8); wherein the content of the first and second substances,

the handheld body (1) is internally provided with a front sealing channel (9), a front mounting channel (10), a rear sealing channel (11) and a rear mounting channel (12) which are sequentially arranged from front to back and are sequentially communicated;

a front outward channel (13) and a rear outward channel (14) which are communicated with the rear sealing channel (11) are also arranged in the handheld body (1);

one end part of the insertion pipe (3) is connected to the handheld body (1) and communicated with the front sealing channel (9);

the front end part of the core tube (2) is hermetically and slidably matched in the front sealing channel (9), and the rear end part of the core tube (2) is hermetically and slidably matched in the rear sealing channel (11);

a flow guide hole (15) which is arranged along the axial direction of the core pipe (2) and communicated with the front sealing channel (9) is arranged in the core pipe (2);

the cylindrical pipe wall of the core pipe (2) is provided with a butt joint hole (16) communicated with the diversion hole (15);

the core tube (2) is provided with a front communication position, a blocking position and a rear communication position which are sequentially arranged from front to back in the process of sliding relative to the handheld body (1), when the core tube (2) slides to the front communication position, the butt joint hole (16) is communicated with the front outer channel (13) in an aligned mode, when the core tube (2) slides to the rear communication position, the butt joint hole (16) is communicated with the rear outer channel (14) in an aligned mode, and when the core tube (2) slides to the blocking position, the butt joint hole (16) is matched with the inner wall of the rear sealing channel (11) and blocked by the inner wall of the rear sealing channel (11);

the poking piece (4) is connected with the core pipe (2) and is suitable for being poked to drive the core pipe (2) to slide among the front conducting position, the plugging position and the rear conducting position;

a first abutting part (17) and a second abutting part (18) are arranged on the core tube (2);

the first elastic element (5) and the first sleeve (6) are mounted in the front mounting channel (10);

one end of the first elastic piece (5) abuts against the handheld body (1), the other end of the first elastic piece (5) abuts against one end of the first sleeve (6), the other end of the first sleeve (6) abuts against the first abutting part (17), and the first elastic piece (5) is suitable for driving the first sleeve (6) to move backwards so as to drive the core pipe (2) to move backwards to the blocking position;

the handheld body (1) is also provided with a first limiting part (19) which is abutted against the first sleeve (6) to limit the first sleeve (6) to continuously move backwards when the first sleeve (6) moves backwards and drives the core pipe (2) to move backwards to the plugging position;

the second elastic element (7) and the second sleeve (8) are both mounted in the rear mounting channel (12);

one end of the second elastic piece (7) abuts against the handheld body (1), the other end of the second elastic piece (7) abuts against one end of the second sleeve (8), the other end of the second sleeve (8) abuts against the second abutting part (18), and the second elastic piece (7) is suitable for driving the second sleeve (8) to move forwards so as to drive the core pipe (2) to move forwards to the blocking position;

and a second limiting part (20) which abuts against the second sleeve (8) to limit the second sleeve (8) to continuously move forwards when the second sleeve (8) moves forwards and drives the core pipe (2) to move forwards to the plugging position is further arranged in the handheld body (1).

2. The gun-type irrigation aspirator according to claim 1, further comprising a negative pressure connector (21) adapted to be connected to a negative pressure source through a pipeline and an irrigation connector (22) adapted to be connected to an irrigation liquid through a pipeline; wherein, the first and the second end of the pipe are connected with each other,

the flush joint (22) is connected to the hand-held body (1) and is communicated with any one of the front outward passage (13) and the rear outward passage (14);

the negative pressure connector (21) is connected to the handheld body (1) and is communicated with the remaining one of the front outward passage (13) and the rear outward passage (14).

3. Gun-type irrigation aspirator according to claim 1, characterized in that the hand-held body (1) comprises a main tube part (23), a tube head (24), a hand grip part (25) and an end cap (26); wherein the content of the first and second substances,

the pipe head (24) is connected to the front end part of the main pipe part (23), the front sealing channel (9) is arranged in the pipe head (24), and the front mounting channel (10), the rear sealing channel (11), the rear mounting channel (12), the front outward channel (13) and the rear outward channel (14) are arranged in the main pipe part (23);

the hand holding part (25) is connected to the main pipe part (23);

the end cap (26) being connected to a rear end portion of the main pipe portion (23) and adapted to cover the rear mounting channel (12);

the insertion tube (3) is connected to the tip of the ferrule (24).

4. The gun-type irrigation aspirator of claim 3,

the first sleeve (6) is sleeved on the outer side of the core pipe (2);

the front end part of the first elastic piece (5) is abutted against the pipe head (24);

the rear end part of the first elastic part (5) is abutted against the front end surface of the first sleeve (6);

the first abutment (17) is adapted to abut against an inner ring of a rear end face of the first sleeve (6);

the first limiting part (19) is suitable for abutting against the outer ring of the rear end face of the first sleeve (6).

5. The gun-type irrigation aspirator of claim 3,

the rear end part of the second elastic part (7) is abutted against the end cover (26);

the front end part of the second elastic part (7) is abutted against the rear end face of the second sleeve (8);

the second abutment (18) is adapted to abut against an inner ring of a front end face of the second sleeve (8);

the second limiting part (20) is suitable for abutting against the outer ring of the front end face of the second sleeve (8).

6. The gun-type irrigation aspirator of claim 3,

the shifting piece (4) comprises a rod part (27) and a fork part (28);

one end part of the rod part (27) is connected to the core pipe (2);

the fork part (28) is connected to the other end of the rod part (27), the fork part (28) is located on the outer side of the handheld body (1) and a finger groove (29) for fingers to extend into is arranged in the fork part (28).

7. The gun-type irrigation aspirator of claim 6,

the main pipe part (23) is provided with a waist-shaped groove (30), and the rod part (27) penetrates through the waist-shaped groove (30) and then is connected with the core pipe (2).

8. The gun-type irrigation aspirator of claim 7,

be equipped with U-shaped groove (31) on first sleeve (6), pole portion (27) pass in proper order waist type groove (30) with behind U-shaped groove (31) with core pipe (2) link to each other.

9. The gun-type irrigation aspirator according to claim 1, characterized in that the outer tube wall of the core tube (2) is provided with a first ring groove (32), a second ring groove (33), a third ring groove (34) and a fourth ring groove (35); wherein the content of the first and second substances,

the first ring groove (32), the second ring groove (33), the third ring groove (34) and the fourth ring groove (35) are sequentially arranged from front to back, and the butt joint hole (16) is positioned between the second ring groove (33) and the third ring groove (34);

o-shaped rings which are suitable for being in sealing butt joint with the inner wall of the rear sealing channel (11) are respectively arranged in the first ring groove (32), the second ring groove (33), the third ring groove (34) and the fourth ring groove (35);

when the core tube (2) is in the front venting position, the front pair of outward passages (13) is located between the second ring groove (33) and the third ring groove (34), and the rear pair of outward passages (14) is located between the third ring groove (34) and the fourth ring groove (35);

when the core tube (2) is located at the rear conduction position, the front outward passage (13) is located between the first ring groove (32) and the second ring groove (33), and the rear outward passage (14) is located between the second ring groove (33) and the third ring groove (34);

when core pipe (2) were located when the shutoff position, preceding outer passageway (13) were in first annular (32) with between second annular (33), back outer passageway (14) were in third annular (34) with between fourth annular (35).

10. The gun-type irrigation aspirator of claim 1,

also includes a seal ring (36); wherein the content of the first and second substances,

the sealing ring (36) is arranged on the outer pipe wall of the front end part of the core pipe (2), and the sealing ring (36) is in sealing contact with the front sealing channel (9).

Images