CN216725344U

CN216725344U - Novel negative pressure anti-backflow suction device

Info

Publication number: CN216725344U
Application number: CN202120542110.6U
Authority: CN
Inventors: 潘芳芳
Original assignee: Affiliated Hospital of Jiangsu University
Current assignee: Affiliated Hospital of Jiangsu University
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2022-06-14
Anticipated expiration: 2031-03-16

Abstract

The utility model relates to a novel anti suction of backflowing of negative pressure device, including the negative pressure jar, the air duct, attract pipe and the check valve of setting on attracting the pipe, the check valve includes outer body and the sliding seat of setting in outer body, outer body both ends are equipped with the connection mouth of pipe, be equipped with the seal receptacle in the outer body, the opening has been seted up at the seal receptacle center, opening one end is equipped with the seal groove, the other end is equipped with the positioning seat, be equipped with the inlet on the positioning seat lateral wall, positioning seat one end sets up the sliding seat, sliding seat one end is embedded into in the connection mouth of pipe, the other end is equipped with the closing plate, the closing plate supports the opening one end at the positioning seat, the closing plate center is equipped with the locating lever, the locating lever passes the opening and is equipped with the sealing plug, be equipped with the liquid outlet on the sliding seat lateral wall. The double-layer sealing is adopted, so that the backflow phenomenon of a small amount of liquid is further prevented, the backflow resisting effect is good, and the infection to the body cavity of a patient caused by the backflow of the liquid is effectively avoided.

Description

Novel negative pressure anti-backflow suction device

Technical Field

The utility model belongs to the technical field of medical auxiliary appliances, concretely relates to novel anti suction that backflows of negative pressure device.

Background

In clinical operation, the incision of a patient is bleedingly bleeding, a flushing fluid needs to be adopted for flushing, and a suction apparatus is needed for sucking redundant flushing fluid and blood after flushing. The negative pressure suction device is mainly used for medical drainage, sputum excretion, waste blood and secretion and the like, and utilizes the vacuum working principle to generate negative pressure in the cavity so as to guide out liquid in the cavity and achieve the purposes of pollution discharge and purification. The existing aspirator has the phenomenon of backflow of a small amount of liquid due to the siphon principle, so that the liquid sucked out of the pipeline flows back to the body cavity of a patient, secondary pollution is easily caused, and the operation risk of the patient is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, a novel anti suction that backflows of negative pressure device is disclosed, solved among the prior art aspirator pipeline and appear backflowing easily and lead to the problem of pollution.

The specific technical scheme is as follows:

a novel negative pressure anti-backflow suction device comprises a negative pressure tank, an air guide pipe, a suction pipe and a check valve arranged on the suction pipe, wherein the negative pressure tank is respectively connected with the air guide pipe and the suction pipe, the air guide pipe is connected with a negative pressure source, and one end of the suction pipe is connected with a suction apparatus pipe head; the check valve is positioned at one end of the suction tube close to the tube head of the suction device, the check valve comprises an outer tube body and a movable seat arranged in the outer tube body, two ends of the outer tube body are provided with connecting tube ports butted with the suction tube, a sealing seat is arranged in the outer tube body, the center of the sealing seat is provided with a through hole, one end of the through hole is provided with a sealing groove, the other end of the through hole is provided with a positioning seat, one end of the positioning seat is an opening, the side wall of the positioning seat is provided with a plurality of liquid inlets, one end of the opening of the positioning seat is provided with the movable seat, the movable seat is in a circular ring structure, one end of the movable seat, far away from the positioning seat, is embedded into the connecting tube port, one end of the movable seat, close to the positioning seat, is provided with a sealing plate, the sealing plate is abutted against one end of the opening of the positioning seat, the center of the sealing plate is provided with a positioning rod in a penetrating way, one end of the positioning rod penetrates through hole and is provided with a sealing plug matched with the size of the sealing groove, a plurality of positioning blocks are uniformly distributed on the side wall of the other end of each positioning rod, the other ends of the positioning blocks are fixedly connected with the inner wall of the movable seat, and a plurality of liquid outlets are formed in the side wall of the movable seat, which is close to one end of the sealing plate.

Furthermore, the outer walls of the liquid inlets 534 at the ends close to the movable seat 52 are all provided with liquid blocking sheets.

Furthermore, a movable sleeve is arranged on one side, close to the positioning seat, of the sealing plate, and the movable sleeve is sleeved at one end of the positioning seat.

Furthermore, the diameter of the movable seat is matched with the inner diameter of the connecting pipe.

Furthermore, a sealing ring is arranged on the inner wall of one end, close to the movable seat, of the outer tube body, and the sealing ring is located on the outer side of the movable seat.

Furthermore, when the sealing plug is matched with the sealing groove for sealing, the sealing plate is pressed against the sealing ring at one end of the outer pipe body.

The beneficial effects of the utility model are embodied in:

the utility model discloses when stopping the return valve when liquid reflux in the pipeline, promote the sealing plug and cooperate with the seal groove and seal, pass through the promotion closing plate after the opening simultaneously a small amount of liquid for the closing plate seals with the cooperation of outer body one end inner wall, adopts double-deck sealed, has further prevented that the backward flow phenomenon from appearing in a small amount of liquid, and anti backflow is effectual, has effectively avoided causing the infection to patient's coelomic because of the liquid reflux.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the check valve of the present invention.

Fig. 3 is a front sectional view of the middle movable sleeve of the present invention.

The suction apparatus comprises a suction apparatus pipe head 1, a suction pipe 2, a negative pressure tank 3, an air duct 4, a check valve 5, an outer pipe body 51, a connecting pipe orifice 511, a movable seat 52, a sealing plate 521, a movable sleeve 5211, a positioning rod 522, a positioning block 523, a liquid outlet 524, a sealing plug 525, a sealing seat 53, a sealing groove 531, a through hole 532, a positioning seat 533, a liquid inlet 534, a liquid blocking sheet 535 and a sealing ring 54.

Detailed Description

For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection is all can.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

As shown in fig. 1-3, a novel negative pressure anti-backflow suction device comprises a negative pressure tank 3, an air duct 4, a suction tube 2 and a check valve 5 arranged on the suction tube 2, wherein the negative pressure tank is respectively connected with the air duct 4 and the suction tube 2, the air duct is connected with a negative pressure source, and one end of the suction tube 2 is connected with a suction apparatus tube head 1; the check valve 5 is positioned at one end of the suction tube 2 close to the head 1 of the suction device, the check valve 5 comprises an outer tube body 51 and a movable seat 52 arranged in the outer tube body 51, two ends of the outer tube body 51 are provided with connecting tube ports 511 butted with the suction tube 2, the outer tube body 51 is provided with a sealing seat 53, the center of the sealing seat 53 is provided with a through hole 532, one end of the through hole 532 is provided with a sealing groove 531, the other end is provided with a positioning seat 533, one end of the positioning seat 533 is an opening, the side wall of the positioning seat 533 is provided with a plurality of liquid inlet ports 534, one end of the opening of the positioning seat 533 is provided with the movable seat 52, the movable seat 52 is in a circular ring structure, one end of the movable seat 52 far away from the positioning seat 533 is embedded into the connecting tube port 511, one end of the movable seat 52 close to the positioning seat 533 is provided with a sealing plate 521, the sealing plate 521 abuts against one end of the opening of the positioning seat 533, and a positioning rod 522 penetrates through the center of the sealing plate 521, one end of the positioning rod 522 penetrates through the through hole 532 and is provided with a sealing plug 525 matched with the sealing groove 531 in size, a plurality of positioning blocks 523 are uniformly distributed on the side wall of the other end of the positioning rod 522, the other ends of the positioning blocks 523 are fixedly connected with the inner wall of the movable seat 52, and a plurality of liquid outlets 524 are formed in the side wall of the movable seat 52 close to one end of the sealing plate 521.

Furthermore, the outer walls of the liquid inlets 534 near the movable base 52 are all provided with liquid blocking sheets 535.

Further, a movable sleeve is arranged on one side of the sealing plate close to the positioning seat, the movable sleeve is sleeved at one end of the positioning seat, and one end of the movable sleeve extends to the liquid blocking piece 535.

Further, the diameter of the movable seat 52 is matched with the inner diameter of the connecting pipe.

Furthermore, a sealing ring 54 is arranged on the inner wall of one end of the outer tube body close to the movable seat, and the sealing ring 54 is located on the outer side of the movable seat.

Further, when the sealing plug 525 is engaged with the sealing groove 531 for sealing, the sealing plate 521 is pressed against the sealing ring 54 at one end of the outer body 51.

The working principle is as follows: when the check valve 5 is used, the sealing plug 525 is enabled to be arranged at the rear end by the suction force of the suction apparatus, the sealing plate 521 is enabled to be abutted against the positioning seat 533, the movable sleeve is sleeved outside one end of the positioning seat, and therefore liquid flows into the outer pipe body 51 through the movable seat 52 and the liquid outlet 524, and flows into the suction pipe 2 through the liquid inlet 534 and the through hole 532; when no longer the aspirator no longer attracts, when liquid backward flow in the aspirator pipeline, liquid promotes sealing plug 525 and removes and cooperatees with seal groove 531 and seals, and a small amount of liquid passes and avoids flowing out from the inlet under the effect of keeping off liquid piece 535 behind the opening 532 simultaneously to promote sealing plate 521, prevent liquid from flowing out from the gap under the effect of movable sleeve 5211, make sealing plate 521 and the cooperation of the sealing washer 54 on the one end inner wall of outer body 51 sealed at last.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention 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 invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A novel negative pressure anti-backflow suction device comprises a negative pressure tank, an air guide pipe, a suction pipe and a check valve arranged on the suction pipe, wherein the negative pressure tank is respectively connected with the air guide pipe and the suction pipe, the air guide pipe is connected with a negative pressure source, and one end of the suction pipe is connected with a suction apparatus pipe head; the device is characterized in that the check valve is positioned at one end, close to a pipe head of the suction apparatus, of the suction pipe, the check valve comprises an outer pipe body and a movable seat arranged in the outer pipe body, two ends of the outer pipe body are provided with connecting pipe orifices butted with the suction pipe, a sealing seat is arranged in the outer pipe body, a through hole is formed in the center of the sealing seat, one end of the through hole is provided with a sealing groove, the other end of the through hole is provided with a positioning seat, one end of the positioning seat is an opening, the side wall of the positioning seat is provided with a plurality of liquid inlets, one end of the opening of the positioning seat is provided with the movable seat, the movable seat is in a circular ring structure, one end, far away from the positioning seat, of the movable seat is embedded into the connecting pipe orifices, one end, close to the positioning seat, of the movable seat is provided with a sealing plate, the sealing plate is abutted against one end of the opening of the positioning seat, a positioning rod penetrates through the through hole and is provided with a sealing plug matched with the size of the sealing groove, a plurality of positioning blocks are uniformly distributed on the side wall of the other end of each positioning rod, the other ends of the positioning blocks are fixedly connected with the inner wall of the movable seat, and a plurality of liquid outlets are formed in the side wall of the movable seat, which is close to one end of the sealing plate.

2. The novel negative-pressure anti-backflow suction device as claimed in claim 1, wherein the outer wall of the liquid inlet close to one end of the movable seat is provided with a liquid baffle.

3. The negative pressure suction device of claim 2, wherein a movable sleeve is provided on the side of the sealing plate close to the positioning seat, and the movable sleeve is provided at one end of the positioning seat.

4. The novel negative-pressure anti-backflow suction device as claimed in claim 1, wherein the diameter of the movable seat is matched with the inner diameter of the connecting pipe.

5. The novel negative-pressure anti-backflow suction device as claimed in claim 1, wherein a sealing ring is arranged on an inner wall of one end of the outer tube body close to the movable seat, and the sealing ring is positioned outside the movable seat.

6. The suction device as claimed in claim 5, wherein the sealing plate is pressed against the sealing ring at one end of the outer tube when the sealing plug is engaged with the sealing groove for sealing.