CN213347327U

CN213347327U - Pressure-measuring pressure-controlled injection device

Info

Publication number: CN213347327U
Application number: CN202021739856.8U
Authority: CN
Inventors: 白泽明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-06-04
Anticipated expiration: 2030-08-19

Abstract

The utility model discloses a pressure measurement pressure control injection device, including the injection barrel, injection barrel one end is equipped with the syringe needle, the internal piston spare that is equipped with of injection barrel, the fixed piston rod section of thick bamboo that is equipped with in piston spare upper portion, piston rod section of thick bamboo top is equipped with presses the cap, the bottom is equipped with pressure sensor, voltage limiting valve and controller in the piston spare, be equipped with the battery in the piston rod section of thick bamboo, press the cap through threaded connection piston rod section of thick bamboo and intercommunication circuit, be equipped with pressure display on the press cap, the equal electric connection battery of pressure sensor, voltage limiting valve, controller and pressure display. The utility model overcomes prior art shortcoming, it is rational in infrastructure, automatic open the pressure limiting valve when pressure reaches limiting pressure, avoid the gasbag internal pressure too high, not only simple and convenient nimble but also safe and reliable in the use.

Description

Pressure-measuring pressure-controlled injection device

Technical Field

The utility model relates to a trachea cannula is with technical field, specifically indicate a pressure measurement voltage-controlled injection device.

Background

After the tracheal intubation is operated, the air sac in the tracheal intubation is required to be injected with air to seal an airway, so that the ventilation effect of the tracheal catheter is ensured. The pressure range of the tracheal intubation air bag is generally 20-30cm H2O, and excessive pressure can press local tracheal mucosa to cause ischemic necrosis of the mucosa, so that the trachea is deformed, and respiration is affected. The air leakage and the reverse flow of secretion are caused by too low pressure. A small amount of gas is injected into the air bag by a common injector clinically, the injected gas amount is about 2-5mL, but when the gas is heated or the tissue is edematous, the pressure in the air bag is increased, the actual pressure is unknown, and certain potential safety hazards exist.

Currently, a balloon manometer is used to measure the pressure of the balloon in clinic. The common air bag pressure measuring gauges have two types, one is a mechanical pointer type pressure gauge, and the other is an electronic pressure gauge. When in use, the pressure sensor is directly connected with an air bag inflation inlet to directly measure the pressure. But the use rate is not high generally. The currently adopted air bag pressure gauge is low in clinical utilization rate, and the first reason is high in price, and the second reason is that the air bag pressure gauge is always connected with an air bag inflation port in the use process, so that the air bag pressure gauge is inconvenient and hinders intraoperative management, and therefore improvement is urgently needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art shortcoming, provide a pressure-measuring pressure-controlled injection device, rational in infrastructure, the pressure limiting valve is opened automatically when pressure reaches limiting pressure, avoids gasbag internal pressure too high, not only simple and convenient nimble but also safe and reliable in the use.

In order to solve the technical problem, the utility model provides a technical scheme does: a pressure-measuring pressure-controlled injection device comprises an injection cylinder, wherein one end of the injection cylinder is provided with an injection needle, a piston piece is arranged in the injection cylinder, a piston rod cylinder is fixedly arranged at the upper part of the piston piece, the top of the piston rod cylinder is provided with a pressing cap, the bottom in the piston piece is provided with a pressure sensor, a pressure-limiting valve and a controller, one end in the pressure-limiting valve is provided with an electromagnetic control chamber, the other end is provided with a ventilation cavity, the ventilation cavity is internally provided with a ventilation channel penetrating through the upper wall and the lower wall of the piston piece, a ventilation piston is arranged in the ventilation cavity, one end of the ventilation piston is provided with a ventilation piston rod, the ventilation piston rod extends into the electromagnetic control chamber, a spring is connected between the other end of the ventilation piston and the inner wall of the ventilation cavity, a battery is arranged, the pressure sensor, the pressure limiting valve, the controller and the pressure display are all electrically connected with the battery.

Furthermore, the bottom of the piston piece is uniformly provided with a protruding piece, and the piston piece can play a role in buffering and protecting internal parts of the piston piece once the piston piece is pressed to the bottom.

Further, the initial position of the vent piston is on the vent path.

Furthermore, an L-shaped branch pipe is arranged on one side of the bottom of the injection cylinder, a vertical elastic hose is arranged on the injection cylinder along the cylinder wall, the lower end of the elastic hose is communicated with the L-shaped branch pipe, the upper end of the elastic hose is fixedly communicated with the upper portion of the injection cylinder, a plug bead is arranged in the elastic hose, a pipe plug is arranged at an opening at the upper end of the L-shaped branch pipe, and the air leakage condition of the air bag is determined by observing the movement condition of the plug bead.

Furthermore, the diameter of the plug bead is larger than the inner diameter of the elastic hose, the elastic hose is a silica gel hose, and the plug bead is a stainless steel ball.

Compared with the prior art, the utility model the advantage lie in: the utility model relates to an injector integrating gas collecting bag inflation, air bag pressure monitoring and air bag pressure control, wherein the front end of the injector consists of an injection tube with an inflation joint and a piston core rod matched with the injection tube, a pressure sensor, a pressure limiting valve and a controller are arranged in a piston piece, an air passage is designed, and when the pressure exceeds a limited pressure, gas is discharged through the air passage; the pressure display device and the plug bead are arranged, so that the change of the pressure inside the air bag can be observed conveniently, and even if the pressure display device fails, the pressure reduction can be noticed through the plug bead at the first time.

The device has small volume, convenient and flexible use, the whole device only needs 20ml syringes with the same size, the price is low, the device is easy to be generally put into clinical use, the overhigh pressure in the air bag is avoided, and the device is simple, convenient, flexible, safe and reliable in the use process.

Drawings

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

Fig. 2 is a schematic structural view of the interior of the piston member of the present invention.

As shown in the figure: 1. the injection device comprises an injection cylinder body, 2, an injection needle, 3, a piston piece, 4, a piston rod cylinder, 5, a pressing cap, 6, a pressure sensor, 7, a pressure limiting valve, 8, a controller, 9, an electromagnetic control chamber, 10, a ventilation cavity, 11, a ventilation piston, 12, a ventilation channel, 13, a spring, 14, a pressure display, 15, a bulge piece, 16, an L-shaped branch pipe, 17, an elastic hose, 18 and a plug bead.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being 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. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

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

The utility model discloses when the concrete implementation, a pressure measurement pressure control injection device, including injection barrel 1, injection barrel 1 one end is equipped with syringe needle 2, be equipped with piston spare 3 in the injection barrel 1, piston spare 3 upper portion is fixed and is equipped with a piston rod section of thick bamboo 4, piston rod section of thick bamboo 4 top is equipped with presses cap 5, the bottom is equipped with pressure sensor 6, pressure limiting valve 7 and controller 8 in the piston spare 3, one end is equipped with electromagnetic control room 9 in the pressure limiting valve 7, and the other end is equipped with ventilation cavity 10, be equipped with the air duct 12 that link up piston spare 3 upper and lower wall in the ventilation cavity 10, be equipped with ventilation piston 11 in the ventilation cavity 10, ventilation piston 11 one end is equipped with the ventilation piston rod, and the ventilation piston rod extends to in the electromagnetic control room 9, be connected with spring 13 between the other end of ventilation piston 11 and the ventilation cavity 10 inner wall, be equipped, the pressure cap 5 is connected with the piston rod cylinder 4 through threads and communicated with a circuit, the pressure display 14 is arranged on the pressure cap 5, the pressure sensor 6, the pressure limiting valve 7, the controller 8 and the pressure display 14 are all electrically connected with a battery, the bottom of the piston piece 3 is uniformly provided with a protruding piece 15, and the initial position of the ventilation piston 11 is arranged on the ventilation channel 12.

An L-shaped branch pipe 16 is arranged on one side of the bottom of the injection cylinder body 1, a vertical elastic hose 17 is arranged on the injection cylinder body 1 along the cylinder wall, the lower end of the elastic hose 17 is communicated with the L-shaped branch pipe 16, the upper end of the elastic hose 17 is fixedly communicated with the upper portion of the injection cylinder body 1, a plug bead 18 is arranged in the elastic hose 17, a pipe plug is arranged at an opening at the upper end of the L-shaped branch pipe 16, the diameter of the plug bead 18 is larger than the inner diameter of the elastic hose 17, the elastic hose 17 is a silica gel hose, and.

The utility model discloses a theory of operation: after the trachea cannula succeeds, firstly, the pressure of the injector is set, and the pressure of the pressure limiting valve is adjusted to be in a required pressure state through the controller; after the pressure is set, the injector is used for injecting gas into the cuff after the gas injection port of the trachea cannula is butted, the real-time pressure in the cuff can be observed, when the pressure exceeds the preset pressure, the pressure sensor transmits a signal to the pressure limiting valve, the pressure limiting valve is automatically opened to avoid continuously inflating the cuff, redundant gas is discharged through the vent channel, the pressure in the cuff is the set pressure, and the overhigh or overlow pressure in the cuff is avoided.

After the cuff is inflated, if the pressure in the cuff needs to be monitored, the injector is directly connected to the inflation port of the cuff of the trachea cannula. When the pressure in the cuff exceeds the set pressure, the same excess gas will be vented through the venting holes.

When the arranged elastic hose injects gas into the injector, the pipe plug is always in a closed state and is used for monitoring, the pipe plug is opened, and when the pressure in the cuff is reduced, the plug bead can be reduced, so that the pressure display is prevented from displaying faults or no electricity, and the pressure change condition is synchronously displayed.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. A pressure-measuring and pressure-controlling injection device comprises an injection cylinder body (1), and is characterized in that: an injection needle (2) is arranged at one end of the injection cylinder body (1), a piston piece (3) is arranged in the injection cylinder body (1), a piston rod cylinder (4) is fixedly arranged at the upper part of the piston piece (3), a pressing cap (5) is arranged at the top of the piston rod cylinder (4), a pressure sensor (6), a pressure limiting valve (7) and a controller (8) are arranged at the bottom in the piston piece (3), an electromagnetic control chamber (9) is arranged at one end in the pressure limiting valve (7), a ventilation cavity (10) is arranged at the other end of the piston rod cylinder, a ventilation channel (12) penetrating through the upper wall and the lower wall of the piston piece (3) is arranged in the ventilation cavity (10), a ventilation piston (11) is arranged in the ventilation cavity (10), a ventilation piston rod is arranged at one end of the ventilation piston (11) and extends into the electromagnetic control chamber (9), a spring (13) is connected between the other, the novel pressure-limiting valve is characterized in that a battery is arranged in the piston rod cylinder (4), the pressure cap (5) is connected with the piston rod cylinder (4) through threads and communicated with a circuit, a pressure display (14) is arranged on the pressure cap (5), and the pressure sensor (6), the pressure-limiting valve (7), the controller (8) and the pressure display (14) are electrically connected with the battery.

2. The pressure-measuring pressure-controlled injection device according to claim 1, characterized in that: the bottom of the piston piece (3) is uniformly provided with a convex piece (15).

3. The pressure-measuring pressure-controlled injection device according to claim 1, characterized in that: the initial position of the venting piston (11) is on the venting channel (12).

4. The pressure-measuring pressure-controlled injection device according to claim 1, characterized in that: the injection device is characterized in that an L-shaped branch pipe (16) is arranged on one side of the bottom of the injection cylinder body (1), a vertical elastic hose (17) is arranged on the upper edge of the injection cylinder body (1) along the cylinder wall, the lower end of the elastic hose (17) is communicated with the L-shaped branch pipe (16), the upper end of the elastic hose is fixedly communicated with the upper portion of the injection cylinder body (1), a plug bead (18) is arranged in the elastic hose (17), and a pipe plug is arranged at an opening at the upper end of the.

5. The pressure-measuring pressure-controlled injection device according to claim 4, wherein: the diameter of the plug bead (18) is larger than the inner diameter of the elastic hose (17), the elastic hose (17) is a silica gel hose, and the plug bead (18) is a stainless steel ball.