CN209751802U

CN209751802U - negative pressure self-resetting flushing suction apparatus

Info

Publication number: CN209751802U
Application number: CN201920221267.1U
Authority: CN
Inventors: 毛诚晨; 刘羊扣
Original assignee: JIANGSU CELTICS MEDITECH Co Ltd
Current assignee: JIANGSU CELTICS MEDITECH Co Ltd
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2019-12-10
Anticipated expiration: 2029-02-21

Abstract

The utility model relates to a negative pressure self-resetting flushing suction apparatus, which comprises a shell, an end cover, a push rod component and a piston component, wherein the piston component is arranged in the shell and can move back and forth along the axial direction of the shell; the push rod assembly is connected on the piston assembly, the end cover is installed on the shell, and the end cover is sleeved on the push rod assembly simultaneously. The negative pressure self-resetting flushing aspirator realizes the automatic resetting function in the suction process by utilizing the negative pressure principle, so that an assistant doctor can operate by one hand, and the labor intensity of the doctor is reduced.

Description

Negative pressure self-resetting flushing suction apparatus

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a negative pressure self-resetting flushing aspirator.

Background

In modern laparoscopic surgery, the negative pressure self-resetting flushing aspirator plays an important role, and the simple function of the negative pressure self-resetting flushing aspirator has 3 functions: clean surgical field, look for bleeding spots and blunt dissection. Among other things, cleaning the surgical field requires the removal of some of the body fluids from the body, which is often done by an assisting physician due to the complexity of the surgical procedure.

because the traditional negative pressure self-resetting flushing suction apparatus has a complex structure, is inconvenient to operate and has no automatic suction function, the labor intensity of an assistant doctor during operation is high (the operation needs to be finished in a short time).

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, the negative pressure that provides washes the aspirator from restoring to the throne, utilizes the negative pressure principle to realize attracting process automatic re-setting's function, makes supplementary doctor one hand just can operate, alleviates doctor's intensity of labour.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a negative pressure self-resetting flushing aspirator comprises a shell, an end cover, a push rod assembly and a piston assembly, wherein the piston assembly is arranged in the shell and can move back and forth along the axial direction of the shell; the push rod assembly is connected on the piston assembly, the end cover is installed on the shell, and the end cover is sleeved on the push rod assembly simultaneously.

When the push rod assembly pushes the piston assembly to move forwards in the shell, certain negative pressure is formed in a space between the end cover and the piston assembly; when the pushing force of the push rod assembly is removed, the piston assembly automatically and slowly returns under the negative pressure suction force, and excessive pulling force does not need to be applied by hands; the doctor only needs the return of supplementary push rod subassembly to accomplish the suction operation when the operation, labour saving and time saving.

As the utility model discloses further modified, piston assembly includes first sealing ring, second sealing ring, back fender ring sum middle fender ring, first sealing ring, middle fender ring sum back fender ring are fixed on push rod assembly in proper order. The double-sealing ring structure prevents liquid leakage.

As a further improvement of the present invention, the front portion of the first sealing ring is a convex arc surface, and the rear end of the first sealing ring is provided with a threaded hole; the outer cylindrical surface of the first sealing ring is provided with a plurality of isolating ring grooves. The convex arc surface is in direct contact with liquid, and the threaded hole is matched with the threaded cylinder at the front end of the push rod.

as a further improvement of the present invention, the second sealing ring is a hollow structure, and a plurality of isolating ring grooves are formed on the outer cylindrical surface of the second sealing ring. The isolating ring groove can effectively reduce the friction resistance between the piston assembly and the shell.

As the utility model discloses further modified, the back keeps off the ring and is double-deck hollow structure, and the internal diameter that keeps off the ring after is less than the external diameter of push rod.

As a further improvement of the utility model, the push rod component comprises a push rod and a hand ring arranged at the rear end of the push rod; the front part of the push rod is a stepped rod, wherein the front end of the stepped rod is a threaded cylinder.

As a further improvement of the utility model, the front end of the shell is a columnar outlet, and the rear end of the shell is symmetrically provided with a bracelet; the rear end of the shell is provided with an annular groove.

As a further improvement of the utility model, an annular clamping protrusion is arranged in the end cover. The annular clamping bulge is clamped in the annular groove.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

The negative pressure principle is utilized to realize the automatic resetting function in the suction process, so that the auxiliary doctor can operate with one hand, and the labor intensity of the doctor is reduced. When the push rod assembly pushes the piston assembly to move forwards in the shell, certain negative pressure is formed in a space between the end cover and the piston assembly; when the pushing force of the push rod assembly is removed, the piston assembly automatically and slowly returns under the negative pressure suction force, and excessive pulling force does not need to be applied by hands; the doctor only needs the return of supplementary push rod subassembly to accomplish the suction operation when the operation, labour saving and time saving.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1 is a schematic view of the assembled state of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the end cap structure of the present invention;

FIG. 4 is a schematic structural view of a housing part of the present invention;

FIG. 5 is a schematic view of the structure of the push rod of the present invention;

Fig. 6 is a schematic view of a first seal ring structure of the present invention;

Fig. 7 is a schematic view of the structure of the rear baffle ring of the present invention.

in the figure: 1. a housing; 2. an end cap; 3. a push rod assembly; 4. a rear baffle ring; 5. a second seal ring; 6. a middle baffle ring; 7. a first seal ring; 8. a columnar outlet; 9. a bracelet; 10. a push rod; 11. a bracelet; 12. an annular engaging projection; 13. an annular groove; 14. a threaded cylinder; 15. a stepped rod; 16. a threaded hole; 17. a convex arc surface; 18. a baffle plate; 19. a baffle plate; 20. connecting blocks; 21. and an isolation ring groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The negative pressure self-resetting irrigation aspirator shown in figures 1 to 7 comprises a shell 1, an end cover 2, a push rod assembly 3 and a piston assembly, wherein the piston assembly is arranged in the shell 1, and the piston assembly can move back and forth along the axial direction of the shell 1; push rod assembly 3 is connected on piston assembly, and end cover 2 installs on casing 1, and end cover 2 suit is on push rod assembly 3 simultaneously. The end cap 2 has guiding and sealing functions and provides conditions for the formation of negative pressure.

And a rubber sealing element is arranged in a hole of the end cover 2 matched with the push rod 10.

When the push rod assembly 3 pushes the piston assembly to move forwards in the shell, certain negative pressure is formed in a space between the end cover 2 and the piston assembly; when the pushing force of the push rod assembly 3 is removed, the piston assembly automatically and slowly returns under the negative pressure suction force, and excessive pulling force does not need to be applied by hands; the doctor only needs supplementary push rod subassembly 3 return can accomplish the suction operation when the operation, and is labour saving and time saving.

The piston assembly comprises a first sealing ring 7, a second sealing ring 5, a rear retaining ring 4 and a middle retaining ring 6, wherein the first sealing ring 7, the middle retaining ring 6, the second sealing ring 5 and the rear retaining ring 4 are sequentially fixed on a push rod 10 of the push rod assembly 3. The first sealing ring 7 and the second sealing ring 5 form a double sealing ring structure to prevent liquid leakage.

The front part of the first sealing ring 7 is a convex cambered surface 17, and the rear end of the first sealing ring 7 is provided with a threaded hole 16; the outer cylindrical surface of the first sealing ring 7 is provided with a plurality of isolating ring grooves 21. The convex arc surface 17 is in direct contact with the liquid, and the threaded hole 16 is matched with the threaded cylinder 14 at the front end of the push rod 10.

The second sealing ring 5 is a hollow structure, and a plurality of isolating ring grooves 21 are formed on the outer cylindrical surface of the second sealing ring. The isolating ring groove 21 can effectively reduce the contact area of the first sealing ring 7 and the second sealing ring 5 of the piston assembly with the inner wall of the shell 1, and reduce the friction resistance.

Keep off ring 4 after for double-deck hollow structure, including baffle 18, baffle 19 and the connecting block 20 that is located between baffle 18 and the baffle 19, connecting block 20 is the elastomer, generally chooses for use rubber materials, makes after keep off ring 4 have certain elasticity, makes after keep off ring 4's whole thickness produce certain change under certain pressure, improves this suction apparatus that washes and uses the ride comfort.

the inner diameter of the backstop ring 4 is smaller than the outer diameter of the push rod 10.

the push rod assembly 3 comprises a push rod 10 and a bracelet 11 arranged at the rear end of the push rod; the front part of the push rod 10 is a stepped rod 15, wherein the front end of the stepped rod 15 is a threaded cylinder 14.

The front end of the shell 1 is a columnar outlet 8, and the rear end of the shell 1 is symmetrically provided with bracelets 9; the rear end of the housing 1 is provided with an annular groove 13.

An annular clamping bulge 12 is arranged in the end cover 2. The annular engaging projection 12 is engaged in the annular groove 13.

The shell 1 is made of transparent medical polymer material.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a negative pressure is from restoring to throne and is washed aspirator which characterized in that: the piston assembly is arranged in the shell and can move back and forth along the axis direction of the shell; the push rod assembly is connected to the piston assembly, the end cover is installed on the shell, and the end cover is sleeved on the push rod assembly.

2. The negative pressure self-resetting irrigation aspirator of claim 1, wherein: piston assembly includes first sealing ring, second sealing ring, back fender ring and intermediate fender ring, first sealing ring, intermediate fender ring, second sealing ring and back fender ring are fixed on push rod assembly in proper order.

3. The negative pressure self-resetting irrigation aspirator of claim 2, wherein: the front part of the first sealing ring is a convex cambered surface, and the rear end of the first sealing ring is provided with a threaded hole; the outer cylindrical surface of the first sealing ring is provided with a plurality of isolating ring grooves.

4. The negative pressure self-resetting irrigation aspirator of claim 2, wherein: the second sealing ring is of a hollow structure, and a plurality of isolating ring grooves are formed in the outer cylindrical surface of the second sealing ring.

5. The negative pressure self-resetting irrigation aspirator of claim 2, wherein: the rear baffle ring is of a double-layer hollow structure.

6. The negative pressure self-resetting irrigation aspirator of claim 1, wherein: the push rod assembly comprises a push rod and a bracelet arranged at the rear end of the push rod; the front part of the push rod is a stepped rod, wherein the front end of the stepped rod is a threaded cylinder.

7. The negative pressure self-resetting irrigation aspirator of claim 1, wherein: the front end of the shell is a columnar outlet, and the back part of the shell is symmetrically provided with a bracelet; the rear end of the shell is provided with an annular groove.

8. The negative pressure self-resetting irrigation aspirator of claim 1, wherein: an annular clamping bulge is arranged in the end cover.