CN209864929U

CN209864929U - Medical nasal catheter

Info

Publication number: CN209864929U
Application number: CN201920375674.8U
Authority: CN
Inventors: 孟金海; 连顺生; 吴竞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2019-12-31
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to the technical field of medical equipment, concretely relates to medical nasal catheter, air current pipe, air inlet joint, nasal aspirator group, its characterized in that: the pressure protection device comprises a base, an airflow inlet, an airflow outlet, a lower airway, an upper airway and an actuating mechanism are arranged in the base, when the airflow flow in the pressure protection device is larger than a set value, the pressure protection device can prevent the airflow from flowing into the nasal cavity of a patient, and a large amount of oxygen can be effectively prevented from suddenly rushing into the respiratory tract of the patient to damage lung tissues and nasal mucosa of the patient.

Description

Medical nasal catheter

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to medical nasal catheter.

Background

In the existing clinical technology, the nasal catheter used for oxygen therapy of patients is a plastic tube, then a nasal suction tube is connected to the tail end of the oxygen therapy tube, the nasal suction tube is inserted into the nasal cavity, and then the oxygen therapy is carried out after the nasal suction tube is fixed. When the oxygen delivery cycle is finished, the nasal catheter is taken off first, then the oxygen switch is closed, but sometimes under the condition that the nasal catheter is not taken off due to the carelessness or misoperation of medical personnel, if the medical personnel twist the switch in the direction of increasing the oxygen amount by mistake at the moment, a large amount of oxygen is suddenly flushed into the respiratory tract to damage lung tissues and nasal mucosa.

SUMMERY OF THE UTILITY MODEL

In order to avoid the occurrence of the above phenomenon, the utility model aims to provide a medical nasal catheter to prevent medical personnel from causing a large amount of oxygen to rush into the respiratory tract of a patient suddenly and damage the lung tissue and nasal mucosa of the patient under the condition of misoperation.

In order to achieve the above purpose, the scheme of the utility model is as follows:

the utility model provides a medical nasal catheter, includes air current pipe, air inlet connector, snuffing pipe group, its characterized in that: the pressure protection device is connected in series on the airflow pipe and comprises a base, an airflow inlet, an airflow outlet, a lower air passage, an upper air passage and an actuating mechanism are arranged in the base, the actuating mechanism comprises a lower airflow hole, an upper airflow hole, a slide way, a piston and a linkage rod, the upper airflow hole is communicated with the upper airflow passage and the outer space of the base, the lower airflow hole is communicated with the lower airflow passage and an airflow outlet, the piston is arranged in the slide way and is connected with the slide way in a sliding way, a spring is arranged between the piston and the bottom of the slideway, two ends of the spring are respectively in contact connection with the piston and the bottom of the slideway, the linkage rod is fixedly connected with the piston, penetrates through the bottom of the slideway and is connected with the base in a sliding manner, one end of the linkage rod is provided with an upper plugging block, the other end of the linkage rod is provided with a lower plugging block, and when the airflow flow in the pressure protection device is smaller than a set value, the upper blocking block blocks the upper airflow hole.

The utility model discloses basic scheme's principle and beneficial effect lie in:

the air inlet connector is connected with an oxygen outlet of the medical oxygen tank, the oxygen outlet flow of the medical oxygen tank is adjusted, the nasal suction tube is inserted into the nasal cavity of the patient, and oxygen flows through the airflow tube and the pressure protection device and then enters the nasal cavity of the patient through the nasal suction tube set.

(II) when the oxygen flow that flows out by medical oxygen jar gas because the maloperation is suddenly when increasing in a large number, a large amount of oxygen flows and flows into in upper airway and the lower airway, because the air current aperture is less down, can't in time discharge a large amount of oxygen, lead to the pressure increase in upper airway and the lower airway, atmospheric pressure promotes the elasticity that the piston overcome the spring and slides to the lower sprue direction, and then with the motion of piston fixed connection gangbar to lower sprue direction, lead to the upper sprue to leave upper airflow hole and make upper airway and base exterior space intercommunication, oxygen flows out to the base via upper airflow hole, lower sprue and lower airflow hole laminating and block oxygen and lead to the gas outlet, prevent that a large amount of oxygen from rushing into patient's respiratory track and damaging lung tissue and nasal mucosa.

Further, as the optimization of basic scheme, the nasal suction tube group includes straw seat, suction cap and regulation seat, the straw seat is hollow L type pipeline, the suction cap is the tubular object of one end shutoff, is equipped with a plurality of gas pockets on the suction cap, the straw seat can be inserted in the suction cap by the suction cap open end, the air current pipe can be inserted in the straw seat, adjust the seat and be both ends open-ended pipeline, adjust the internal diameter of seat and be greater than or equal to the external diameter of straw seat, it has the slot hole to open on adjusting the seat wall, the width dimension of slot hole is less than the external diameter dimension of straw seat. The straw seat is inserted into the adjusting seat from the long hole to enable the horizontal part of the straw seat to be coaxial with the adjusting seat, then the airflow pipe is inserted into the pipe orifice of the horizontal part of the straw seat, the straw seat can move in the adjusting seat along the axis direction of the adjusting seat, and the distance between the straw seats can be adjusted to adapt to the nasal cavity distance of a patient.

Furthermore, the blocking end of the suction cap is a hemispherical surface. Can prevent the muscle tissue of the nasal cavity inner wall of the patient from being damaged.

Further, will adjust the seat and set up to the arc type that is close human nostril department upper lip, make and adjust the seat and more laminate patient's skin, improve patient's comfort level.

Furthermore, the elastic band is arranged on the airflow pipe, and the elastic band is sleeved on the hindbrain of the patient when in use, so that the nasal catheter is conveniently fixed on the head of the patient.

Further, as optimization of the basic scheme, the upper airflow hole is set to be a conical hole, and the upper blocking block is set to be a conical block matched with the upper airflow hole; the lower airflow hole is arranged to be a conical hole, and the lower blocking block is arranged to be a conical block matched with the lower airflow hole. The cooperation of bell mouth and toper piece has from the effect of centering and increase the contact surface for sealed effect is better.

Drawings

Fig. 1 is a schematic view of a medical nasal catheter of the present invention.

Fig. 2 is a schematic structural diagram of the pressure protection device.

FIG. 3 is a schematic view of the structure of a nasal cannula set.

Fig. 4 is a schematic perspective view of the adjusting seat.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the air flow pipe 1, the air inlet connector 2, the nasal suction pipe group 3, the adjusting seat 31, the long hole 311, the suction pipe seat 32, the suction cap 33, the air hole 331, the pressure protection device 4, the base 40, the air flow inlet 41, the lower air passage 42, the upper air passage 43, the linkage rod 441, the slide 442, the spring 443, the piston 444, the lower blocking piece 445, the lower air flow hole 446, the upper blocking piece 447, the upper air flow hole 448, the air flow outlet 45 and the elastic belt 5.

A medical nasal catheter, as shown in figure 1, comprises an airflow tube 1, an air inlet connector 2 and a nasal suction tube group 3, wherein the airflow tube 1 is a flexible plastic tube, the air outlet end of the airflow tube 1 is divided into a left airflow branch tube and a right airflow branch tube, an elastic band 5 is arranged between the left airflow branch tube and the right airflow branch tube, and the elastic band 5 is sleeved on the hindbrain of a patient when in use, so that the nasal catheter is conveniently fixed on the head of the patient; the air inlet connector 2 is connected with the air inlet end of the airflow pipe 1, and the air inlet connector 2 is connected with the outlet of the medical oxygen tank when the nasal catheter is used.

The medical nasal catheter also comprises a pressure protection device 4 connected in series on the air flow tube 1, as shown in fig. 2, the pressure protection device 4 comprises a base 40, an air flow inlet 41, an air flow outlet 45, a lower air passage 42, an upper air passage 43 and an actuating mechanism are arranged in the base 40, the actuating mechanism comprises a lower air flow hole 446, an upper air flow hole 448, a slide 442, a piston 444 and a linkage rod 441, the upper air flow hole 448 is set to be a tapered hole, the upper air flow hole 448 is communicated with the space outside the base 40 through the upper air passage 43, the lower air flow 446 is set to be a tapered hole, the lower air flow 446 is communicated with the lower air passage 42 and the air flow outlet 45 through the lower air flow hole 446, the piston 444 is arranged in the slide 442 and is connected with the slide 442 in a sliding manner, a spring 443 is arranged between the piston 444 and the bottom of the slide 442, two ends of the spring 443 are respectively connected with the bottoms of the piston, an upper blocking block 447 is arranged at one end of the linkage rod 441, the upper blocking block 447 is a conical block matched with the upper airflow hole 448, a lower blocking block 445 is arranged at the other end of the linkage rod 441, and the lower blocking block 445 is a conical block matched with the lower airflow hole 446.

When the flow rate of oxygen flowing into the airflow inlet 41 is greater than 7L/min, the elastic force of the spring 443 is set to be compressed by the piston 444, and when the flow rate of oxygen flowing into the airflow inlet 41 is less than 7L/min, the pressure of the air pressure in the upper air passage 43 on the piston 444 is smaller than the thrust of the spring 443 on the piston 444, and the elastic force of the spring 443 enables the upper blocking piece 447 to block the upper airflow hole 448; when the flow rate of the oxygen flowing into the airflow inlet 41 is larger than 7L/min, because the aperture of the lower airflow 446 is small, a large amount of oxygen cannot be discharged in time, the air pressure in the upper air passage 43 and the lower air passage 42 is increased, the pressure generated by the increased air pressure on the piston 444 is larger than the thrust of the spring 443 on the piston 444, the piston 444 slides towards the direction of the lower block 445, and the linkage rod 441 moves towards the lower blocking piece 445 to cause the upper blocking piece 447 to leave the upper airflow hole 448 to enable the upper airway 43 to be communicated with the space outside the base 40, and oxygen flows out of the base 40 through the upper airflow hole 448, so that the effect of preventing a large amount of oxygen from suddenly rushing into the respiratory tract of the patient to damage the lung tissue and nasal mucosa of the patient is achieved, in order to timely remove a large amount of oxygen flowing into the pressure protection device 4 and ensure that the flow rate of oxygen passing through the lower airflow hole 446 is less than 7L/min, the aperture of the upper airflow hole 448 is set to be 2 times that of the lower airflow hole 446.

In order to make the nasal suction tube set 3 better adapt to the nasal cavity distance of different patients, improve the comfort of the patients and improve the oxygen inhalation effect, as shown in fig. 3, the nasal suction tube set 3 comprises a suction tube base 32, a suction cap 33 and an adjusting base 31, the suction tube base 32 is a hollow L-shaped pipeline, the suction tube base 32 is made of rigid plastics, the suction cap 33 is a tubular object with one end being blocked, a plurality of air holes 331 are arranged on the suction cap 33, the suction cap 33 is inserted into the nasal cavity of the patient when the patients inhale oxygen, in order to prevent the suction cap 33 from damaging the muscular tissue on the inner wall of the nasal cavity of the patient, the suction cap 33 is made of elastic silica gel, the blocked end of the suction cap 33 is set to be a hemispherical surface, the suction tube base 32 can be inserted into the suction cap 33 from the open end of. The adjusting seat 31 is made of hard plastic with micro elasticity, the adjusting seat 31 is a pipeline with two open ends, the inner diameter of the adjusting seat 31 is larger than or equal to the outer diameter of the straw seat 32, so that the straw seat 32 can be placed in the adjusting seat 31, the wall of the adjusting seat 31 is provided with a long hole 311, the width dimension of the long hole 311 is smaller than the outer diameter dimension of the straw seat 32, when the straw seat 32 is inserted into the adjusting seat 31 from the long hole 311, because the adjusting seat 31 is made of hard plastic with micro elasticity, the straw seat 32 can be clamped by the long hole 311. The straw seat 32 is inserted into the adjusting seat 31 from the long hole 311 to make the horizontal part of the straw seat 32 coaxial with the adjusting seat 31, then the airflow pipe 1 is inserted into the pipe orifice of the horizontal part of the straw seat 32, the straw seat 32 can move in the adjusting seat 31 along the axial direction of the adjusting seat 31, and the distance between the straw seats 32 can be adjusted to adapt to the nasal cavity distance of the patient. As shown in fig. 4, in order to make the adjusting seat 31 fit the skin of the patient and improve the comfort of the patient, the adjusting seat 31 is set to be an arc shape close to the upper lip of the nose of the human body.

The utility model relates to a medical nasal catheter's working process is:

the elastic band 5 is sleeved on the head of a patient, the air inlet connector 2 is connected with an oxygen outlet of the medical oxygen tank, the oxygen outlet flow of the medical oxygen tank is adjusted, the distance between the suction tube seat 32 and the nasal cavity of the patient is adjusted, the suction cap 33 is inserted into the nasal cavity of the patient, oxygen flows into the nasal cavity of the patient through the nasal suction tube group 3 after flowing through the airflow tube 1 and the pressure protection device 4, when the oxygen flow in the airflow tube 1 is suddenly increased due to misoperation, the pressure protection device 4 blocks the oxygen from flowing into the nasal cavity of the patient, and a large amount of oxygen is prevented from rushing into the respiratory tract of the patient to damage lung tissues and nasal mucosa.

The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a medical nasal catheter, includes air current pipe, air inlet connector, snuffing pipe group, its characterized in that: the pressure protection device is connected in series on the airflow pipe and comprises a base, an airflow inlet, an airflow outlet, a lower air passage, an upper air passage and an actuating mechanism are arranged in the base, the actuating mechanism comprises a lower airflow hole, an upper airflow hole, a slide way, a piston and a linkage rod, the upper airflow hole is communicated with the upper airflow passage and the outer space of the base, the lower airflow hole is communicated with the lower airflow passage and an airflow outlet, the piston is arranged in the slide way and is connected with the slide way in a sliding way, a spring is arranged between the piston and the bottom of the slideway, two ends of the spring are respectively in contact connection with the piston and the bottom of the slideway, the linkage rod is fixedly connected with the piston, penetrates through the bottom of the slideway and is connected with the base in a sliding manner, one end of the linkage rod is provided with an upper plugging block, the other end of the linkage rod is provided with a lower plugging block, and when the airflow flow in the pressure protection device is smaller than a set value, the upper blocking block blocks the upper airflow hole.

2. The medical nasal catheter of claim 1, wherein: the nasal suction tube group comprises a suction tube seat, a suction cap and an adjusting seat, the suction tube seat is a hollow L-shaped pipeline, the suction cap is a tubular object with one end blocked, a plurality of air holes are formed in the suction cap, the suction tube seat can be inserted into the suction cap from the open end of the suction cap, the airflow tube can be inserted into the suction tube seat, the adjusting seat is a pipeline with two open ends, the inner diameter of the adjusting seat is larger than or equal to the outer diameter of the suction tube seat, a long hole is formed in the wall of the adjusting seat, and the width of the long hole is smaller than the outer diameter of the suction tube seat.

3. The medical nasal catheter of claim 2, wherein: the blocking end of the suction cap is a hemispherical surface.

4. The medical nasal catheter of claim 3, wherein: the adjusting seat is arc-shaped.

5. The medical nasal catheter of claim 4, wherein: an elastic belt is arranged on the airflow pipe.

6. The medical nasal catheter of claim 1, wherein: the upper airflow hole is set to be a conical hole, and the upper blocking block is set to be a conical block matched with the upper airflow hole; the lower airflow hole is arranged to be a conical hole, and the lower blocking block is arranged to be a conical block matched with the lower airflow hole.