CN108543125B

CN108543125B - Negative pressure switch of sputum suction tube

Info

Publication number: CN108543125B
Application number: CN201810585517.XA
Authority: CN
Inventors: 刘凯; 曾小坚
Original assignee: Shaoxing Undis Medical Technology Co ltd
Current assignee: Shaoxing Undis Medical Technology Co ltd
Priority date: 2018-06-08
Filing date: 2018-06-08
Publication date: 2024-03-15
Anticipated expiration: 2038-06-08
Also published as: CN108543125A

Abstract

The invention relates to the field of medical equipment, in particular to a negative pressure switch of a sputum suction tube, which comprises a button and a sealing valve for blocking a passage of a switch seat, wherein a pressing rod is arranged below the button, the sealing valve is driven to move up and down by the pressing rod, a limiting piece is arranged at the upper end of the pressing rod in a penetrating manner, the limiting piece is arranged in the switch seat in a manner of being capable of translating up and down and not rotating horizontally, the extending end of the limiting piece is arranged in a spiral guide rail at the inner side of the button, when the limiting piece is positioned at the highest point of the spiral guide rail, the button is positioned at the lowest point, the switch seat is in a locking state, and when the limiting piece is positioned at the lowest point of the spiral guide rail, the button is positioned at the highest point, and the switch seat is in an unlocking state. After the scheme is adopted, the switch is in an unlocking state and a locking state, the difference is obvious, and accidental conduction or damage to the switch caused by misoperation is avoided.

Description

Negative pressure switch of sputum suction tube

Technical Field

The invention relates to the field of medical appliances, in particular to a negative pressure switch of a sputum suction tube.

Background

When a patient cannot breathe spontaneously, the patient needs to carry out manual air transmission on the patient upper breathing machine, in this case, the patient cannot remove sputum in the throat through contraction of the muscle of the patient, in order to prevent the patient from choking with the sputum, the sputum needs to be manually discharged by using a sputum aspirator, the sputum aspirator generally adopts a catheter which is deep into the throat to generate negative pressure, the sputum is sucked by the negative pressure, in consideration of use safety, a switch is required to control on and off of a pipeline, the pressing controller disclosed in the patent No. CN102652842A is required, and because the locking state and the unlocking state of the switch are consistent from the appearance, the user cannot easily identify whether the catheter is operable or not, so that unnecessary misoperation is possibly caused under an emergency state, and the inventor further researches the sputum aspirator, namely the negative pressure switch for the suction tube is developed.

Disclosure of Invention

The invention aims to provide a negative pressure switch of a sputum suction tube, which has the advantages of obvious distinction between unlocking and locking states of the switch, and avoiding accidental conduction or damage to the switch caused by misoperation.

In order to achieve the above object, the technical scheme of the present invention is as follows:

the utility model provides a sputum suction tube negative pressure switch, includes the button and is used for blocking the sealing valve of switch seat passageway, the button below is provided with the depression bar, the sealing valve passes through the depression bar and drives up-and-down motion, the locating part is worn to be equipped with in the depression bar upper end, the locating part is in the switch seat with the mode setting that can translate from top to bottom and can not horizontal rotation, the extension end setting of locating part is in the inboard helical guideway of button, and when the locating part was located helical guideway's highest point, the button was located lowest, and the switch seat is in the pinning state, and when the locating part was located helical guideway's lowest point, the button was located highest, and the switch seat was in the unblock state.

Further, the inner side of the button is provided with guide rail seats, two spiral guide rails are symmetrically arranged on the guide rail seats, and arc grooves are formed in the starting point and the end point of each spiral guide rail.

Further, a limiting protrusion is arranged between the arc-shaped groove and the spiral guide rail.

Further, a compression spring is arranged between the lower part of the sealing valve and the bottom of the switch seat, and the compression spring drives the compression rod through the sealing valve to enable the button to have upward elastic force.

Further, a sealing ring is arranged between the guide rail seat and the compression bar.

Further, a soft adhesive layer is arranged on the button.

Further, the switch seat is connected with a switch joint, and an exhaust groove is reserved between the switch joint and the sealing valve.

Further, the rotation angle of the spiral guide rail is 180 °.

After the scheme is adopted, compared with the prior art, the invention has the following advantages:

according to the position of the button, whether the switch is in an operable state or not can be clearly distinguished, so that misoperation can be effectively avoided, and accidental conduction or damage of the switch is prevented; the locking state is safe, can not unlock by mistake, and compact structure is firm, and external force is not fragile inside the switch.

Drawings

FIG. 1 is a schematic illustration of a switch in a locked state;

FIG. 2 is a schematic illustration of the switch in an unlocked non-conductive state;

FIG. 3 is a schematic illustration of the switch in an unlocked and conducting state;

FIG. 4 is a schematic view of a guide rail mount;

description of the reference numerals

Button 1, sealing valve 2, compression bar 3, limiting piece 4, guide rail seat 5, spiral guide rail 6,

an arc-shaped groove 61, a limiting protrusion 62, a compression spring 7, a sealing ring 8, a soft adhesive layer 9,

a switch joint 10, an exhaust groove 11 and a switch seat 12.

Description of the embodiments

The invention will be further described with reference to the drawings and the specific examples.

As shown in the figure, the negative pressure switch of the sputum suction tube comprises a switch seat 12, wherein the switch seat 12 can be connected with a switch joint 10 for connecting a conduit, the on-off is controlled through a transverse pipeline inside the switch seat 12, and the on-off is realized through the up-and-down movement of a sealing valve 2 in the switch seat 12, so that the sealing valve 2 and a pressure rod 3 are arranged together in a linkage way, the pressure rod 3 and the sealing valve 2 can be made into an integrated structure, and the up-and-down movement of the sealing valve 2 is realized by arranging a button 1 above the pressure rod 3 and arranging a compression spring 7 below the sealing valve 2: pressing the push button 1 presses the compression spring 7 down in a compressed state, and releasing the push button 1 compresses the spring 7 to push the sealing valve 2 to shut off the passage, the principle of which is disclosed in CN102652842 a.

The key point of the scheme is that a limiting piece 4 (a pressure bar pin) is transversely arranged on a pressure bar 3, two ends of the limiting piece 4 penetrate through a switch seat 12 and are arranged in two spiral guide rails 6 of a guide rail seat 5 at the inner side of a button 1, the spiral guide rails 6 are symmetrically arranged on the guide rail seat 5, the button 1 is rotated anticlockwise, the guide rail seat 5 rotates along with the limit piece 4, the limiting piece 4 is limited by the switch seat 12 and cannot rotate, the limiting piece can only relatively spirally descend in the spiral guide rail 6, the guide rail seat 5 drives the button 1 to rotationally ascend, in the embodiment, the rotating angle of the spiral guide rail 6 is 180 degrees because the shape of the button 1 is not round, so that after the limiting piece 4 relatively rotates 180 degrees from the high point of the guide rail seat 5 to the low point, the button 1 can still synchronously rotate 180 degrees to be matched with the switch seat 12 (from fig. 1 to fig. 2), at the moment, the button 1 is separated from the switch seat 12, a space for pressing down is reserved for the button 1, the guide rail seat 5 can only relatively descend the pressure bar 3 relatively spirally, the guide rail seat 5 can not rotate relatively, and the pressure bar 1 can be regarded as a sealing valve 2 is closed, and a pipeline is closed, and the sealing valve is closed, and the pipeline is opened, and the pipeline is closed, and the pipeline is opened. When the button 1 rotates, the button 1 is attached to the switch seat 12 again, i.e. the button 1 cannot be pressed, so that a user can determine whether the switch is in an unlocked state according to the state of the button 1.

In order to prevent the stopper 4 from falling off the arc-shaped groove 61 when the push button 1 is pushed and in the locked state, the stopper 4 is not easily separated from the arc-shaped groove 61 by providing the stopper protrusion 62 at both the start point and the end point of the spiral guide rail 6.

In order to ensure the tightness of the whole switch, a sealing ring 8 is arranged between the guide rail seat 5 and the compression bar 3 to prevent air leakage from the guide rail seat.

The soft adhesive layer 9 is arranged on the button 1, so that the button is more comfortable to press.

An exhaust groove 11 is reserved between the switch joint 10 and the sealing valve 2, so that vacuum effect is prevented from being caused when the switch joint is pressed, and an opening of the exhaust groove 11 corresponds to an inner pipeline of the switch joint 10.

The foregoing is only specific embodiments of the present invention, and words such as "upper, lower, left, right, middle" and the like "related to the present invention are merely used by way of reference, not to be construed as limiting, and any insubstantial modifications made by the present invention shall fall within the scope of the invention.

Claims

1. The utility model provides a sputum suction pipe negative pressure switch which characterized in that: the switch seat comprises a button and a sealing valve for blocking a switch seat passage, wherein a pressing rod is arranged below the button, the sealing valve drives the sealing valve to move up and down through the pressing rod, a limiting piece is arranged at the upper end of the pressing rod in a penetrating manner, the limiting piece is arranged in the switch seat in a manner of being capable of translating up and down and not horizontally rotating, the extending end of the limiting piece is arranged in a spiral guide rail on the inner side of the button, guide rail seats are arranged on the inner side of the button, two spiral guide rails are symmetrically arranged on the guide rail seats, arc-shaped grooves are formed in the starting point and the end point of the spiral guide rail; a compression spring is further arranged between the lower part of the sealing valve and the bottom of the switch seat, and the compression spring drives the compression rod through the sealing valve to enable the button to have upward elastic force.

2. The sputum aspirator negative pressure switch of claim 1, wherein: and a limiting protrusion is arranged between the arc-shaped groove and the spiral guide rail.

3. The sputum aspirator negative pressure switch of claim 1, wherein: and a sealing ring is arranged between the guide rail seat and the compression bar.

4. The sputum aspirator negative pressure switch of claim 1, wherein: the button is provided with a soft adhesive layer.

5. The sputum aspirator negative pressure switch of claim 1, wherein: the switch seat is connected with the switch joint, and an exhaust groove is reserved between the switch joint and the sealing valve.

6. The sputum aspirator negative pressure switch of claim 1, wherein: the rotation angle of the spiral guide rail is 180 degrees.