CN200945159Y - Positive Pressure Chamber Detector - Google Patents

Abstract

A positive pressure cavity detector is composed of a needle tube body, a monitor, a connecting tube and a pressure control bottle which are sequentially nested and connected. The monitor includes a monitor inlet hole, a monitor outlet hole, a monitor discharge hole, a monitor indicator valve, a monitor indicator valve spring, a spring tension adjustment knob, a monitor discharge hole, a warning line, a red monitor indicator valve and an indicator The valve spring is connected, the outlet hole of the monitor is connected with the proximal end of the needle body, the inlet hole of the monitor is connected with the connecting pipe, and the lumen containing the red monitor indicator valve and the low elastic spring of the indicator valve is perpendicular to the inlet hole of the monitor and the outlet of the monitor. For the pipeline between the holes, the warning line is engraved on the lumen wall of the elastic spring, the monitor discharge hole is located at the end of the lumen wall of the elastic spring, and the monitor discharge hole communicates obliquely with the middle and lower section of the lumen where the indicator valve spring is located. The probe of the utility model is used for the detection of airways, blood vessels and chambers of a medical human body, which can improve the detection success rate, reduce the detection damage of the probe or the distal end of the extended catheter to the tube wall, and reduce the use of contrast agents.

Description

Positive Pressure Chamber Detector

technical field

The utility model relates to a detector in the technical field of medical instruments, in particular to a positive pressure cavity detector.

technical background

When it is difficult to open the airway under surgical anesthesia and salvage, cricothyroid membrane retrograde guidance for endotracheal intubation is an important technique for difficult endotracheal intubation.

After searching the existing technologies, it was found that in "Difficult Endotracheal Intubation Techniques" edited by Xue Fushan published by Science and Technology Literature Press in May 2002, Chapter Two, Section Seven "Retrograde Guidance Endotracheal Intubation Techniques", mentioned the use of lumbar The epidural puncture needle (blunt tip, needle opening sideways, needle body straight) is used to guide the epidural anesthesia catheter or guide wire retrogradely into the pharynx after puncturing the cricothyroid membrane. However, it is usually difficult for the retrograde guiding catheter or steel wire to enter the oropharyngeal cavity retrogradely from the cricothyroid membrane puncture point through the glottis (it will be more difficult when the glottis is closed when the patient does not breathe spontaneously) in the cricothyroid membrane retrograde guided tracheal intubation technique. Repeated blind probing of the glottis caused soft tissue damage, delaying endotracheal intubation and rescue. The clinical application of cricothyroid retrograde-guided endotracheal intubation is less.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art and provide a positive pressure cavity detector, which can detect with low damage and pass through the glottis and guide the guide wire in the lumen into the oropharyngeal cavity, which is reliable and accurate in operation. It is highly reliable and easy to operate, greatly improving the success rate of cricothyroid retrograde tracheal intubation and shortening the time of retrograde tracheal intubation.

The utility model is realized through the following technical solutions. The utility model is composed of a needle tube body, a monitor, a connecting tube and a pressure control bottle which are sequentially nested and connected. The monitor includes a monitor inlet hole, a monitor outlet hole, and a monitor discharge hole. Hole, monitor indicator valve, monitor indicator valve spring, monitor discharge hole, warning line, spring elastic adjustment knob, red monitor indicator valve is connected to the indicator valve spring, monitor outlet hole is connected to the proximal end of the needle body, The inlet hole of the monitor is connected with the connecting pipe, and the lumen containing the red monitor indicator valve and the low elastic spring of the indicator valve is perpendicular to the pipeline between the monitor inlet hole and the monitor outlet hole, and the warning line is engraved on the lumen wall of the elastic spring to monitor The discharge hole of the device is located at the end of the lumen wall of the elastic spring, the discharge hole of the monitor communicates obliquely with the middle and lower part of the lumen where the indicating valve spring is located, and the spring force adjustment knob is located at the end of the lumen of the elastic spring, which can be screwed into the lumen.

The pressure control bottle includes: a pressure control bottle body, a pressure control bottle outlet pipe, a pressure control bottle inlet pipe, a pressure control bottle inlet pipe flow adjustment switch, a pressure control bottle discharge pipe pressure ball, a pressure control bottle inlet pipe flow adjustment The switch is located on the inlet tube of the pressure control bottle, the outlet tube of the pressure control bottle, the inlet tube of the pressure control bottle is located on both sides of the bottle body of the pressure control bottle, the pressure ball is placed in the discharge tube of the pressure control bottle, and the pressure ball is placed in the discharge tube of the pressure control bottle. The discharge pipe is located at the top of the pressure control bottle body.

The discharge tube of the pressure control bottle and the pressure ball of the pressure control bottle discharge tube are placed vertically, the discharge tube of the pressure control bottle is in the shape of an inverted cone with a large top and a small bottom, and the size and weight ratio of the pressure ball are set values.

The distal end of the needle body is a blunt needle head, and an extended needle body is used instead of the needle body to detect the long-distance lumen.

The tail of the needle body is nestedly connected to the outlet hole of the monitor, and the inlet hole of the monitor is nestedly connected to the pressure control bottle including the outlet pipe of the pressure control bottle through a connecting pipe.

The utility model has the following advantages: 1. Low damage detection. The blunt cavity probe needle with a relatively large diameter should not damage the tube wall, and a certain flow of gas is continuously ejected from the needle core to form an air cushion on the soft tissue of the airway wall and the front end of the probe when advancing slowly, so it is not suitable to damage the tube wall. When the blunt cavity probe touches the cavity wall, the ejected airflow is blocked, and the indicator label is pressed to the stage to warn and stop the probe from moving forward to prevent further damage. 2. The positive pressure airflow at the front end of the probe can blow away the soft tissue and attachments on the tube wall, and may even blow open the glottis and oropharyngeal cavity, so that the probe can enter. 3. The airflow blown out by positive pressure at the front of the probe can be pure oxygen, which can continuously provide the oxygen needed by the patient during the detection operation. 4. The probe can be bent to a certain extent, which conforms to the characteristics of the airway near the glottis and reduces airway damage. 5. Easy to operate and low price.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model

Fig. 2 is a schematic cross-sectional view of the structure of the needle body and the monitor of the utility model,

Figure 3 is a schematic cross-sectional view of the structure of the utility model pressure control bottle

In the figure, the needle body 1, the extension needle body 2, the monitor 3, the connecting pipe 4, the pressure control bottle 5, the monitor inlet hole 6, the monitor outlet hole 7, the monitor outlet hole 8, the monitor indicator valve 9, the monitor Indicator valve spring 10, monitor discharge hole 11, pressure control bottle outlet pipe 12, pressure control bottle inlet pipe 13, pressure control bottle inlet pipe flow adjustment switch 14, pressure control bottle discharge pipe 15, pressure control bottle discharge Pipe pressure ball 16, monitor warning line 17, spring elastic force adjustment knob 18.

Detailed ways

As shown in Fig. 1, the utility model is made up of needle tube body 1, monitor 3, connecting pipe 4 and pressure control bottle 5 connected successively. The tail of the needle body 1 is nested connected with the monitor 3, and the monitor 3 is nested connected with the pressure control bottle 5 through the connecting tube 4. According to the structural characteristics of different tissue cavities, the extended needle body 2 of different lengths and curvatures can be selected to replace the needle body 1 to detect the long-distance lumen.

As shown in Figures 2 and 3, Figure 2 is a cross-sectional view of the structure of the needle body 1 and the monitor 3. The distal end of the needle body 1 is a blunt needle head, and the extended needle body 2 of different lengths and curvatures can be selected according to needs.

The monitor 3 includes a monitor inlet hole 6, a monitor outlet hole 7, a monitor outlet hole 8, a monitor indicator valve 9, a monitor indicator valve spring 10, a monitor discharge hole 11, a warning line 17, and a spring force adjustment knob 18. The red monitor indicator valve 9 is connected with the indicator valve spring 10 . The monitor outlet hole 7 is connected to the proximal end of the needle tube body 1 , and the monitor inlet hole 6 is connected to the connecting tube 4 . The lumen containing the red monitor indicator valve 9 and the indicator valve low elastic spring 10 is perpendicular to the pipeline between the monitor inlet hole 6 and the monitor outlet hole 7 . The warning line 17 is engraved on the lumen wall of the elastic spring 10 . The monitor discharge hole 11 is located at the end of the lumen wall of the elastic spring 10, so that the lumen of the elastic spring 10 communicates with the atmosphere. The discharge hole 8 of the monitor communicates obliquely with the middle and lower part of the lumen where the indicating valve spring 10 is located. The spring force adjustment knob 18 is located at the end of the lumen of the elastic spring and can be screwed into the lumen.

A certain pressure gas flows from the connecting pipe 4 through the monitor inlet hole 6, the monitor outlet hole 7 and the needle body 1, and is discharged from the distal end of the needle body 1. When the exhaust at the distal end of the needle body 1 is obstructed, the fluid pressure in the pipeline rises to a certain value, the indicator valve 9 lifts, the low elastic spring 10 is compressed, and the fluid is discharged from the monitor discharge hole 8 to reduce the fluid pressure in the pipeline. At this time, the indicator valve 9 is raised to the warning line 17 to prompt the distal end of the needle tube body to touch the cavity wall. On the contrary, when the distal end of the needle tube body is in the cavity, there is no resistance to the exhaust, and the indicating valve 9 will not rise to the warning line 17 . The monitor bleed hole 11 ensures the sensitivity of the movement of the indicator valve 9 and the low spring 10 .

After the spring force adjustment knob 18 is rotated, the spring 10 can be compressed to the monitor indicating valve 9, thereby increasing the elastic resistance. Reduce monitoring sensitivity.

If the detection cavity is full of liquid, the flow in the probe system is a positive pressure liquid, and a liquid collection pipe can be connected to the discharge hole 8 of the monitor 3, the discharge hole 11 of the monitor and the discharge pipe 15 of the pressure control bottle to recover the liquid.

As shown in Figure 3, it is a structural sectional view of the pressure control bottle 5

Pressure control bottle 5 comprises pressure control bottle 5 bottle bodies, pressure control bottle outlet pipe 12, pressure control bottle inlet pipe 13, pressure control bottle inlet pipe flow regulating switch 14 and pressure control bottle discharge pipe pressure ball 16. Pressure control bottle inlet pipe flow adjustment switch 14 is located on pressure control bottle inlet pipe 13, pressure control bottle outlet pipe 12, pressure control bottle inlet pipe 13 is located on both sides of pressure control bottle 5 bottle body, pressure control bottle discharge pipe pressure ball 16 Placed in the pressure control bottle discharge pipe 15, the pressure control bottle discharge pipe 15 is located at the top of the pressure control bottle 5 bottles.

Pressure control bottle discharge pipe 15 and pressure control bottle discharge pipe pressure ball 16 are placed vertically. The discharge pipe 15 of the pressure control bottle is an upside-down conical shape, and the size and weight ratio of the pressure ball 16 are set values, which are used to set the pressure of the pressure control bottle 5 at an appropriate value. When the inlet pipe 13 of the pressure control bottle connected with the high-pressure gas source has a large air intake, and when the air pressure in the pressure control bottle 5 is greater than an appropriate value, the pressure ball 16 will be lifted up to remove part of the gas, and the pressure will be reduced to ensure that the pressure control bottle 5 The pressure is not greater than a certain value. The pressure control bottle inlet pipe flow regulating switch 14 is used to control the intake air volume, so that the pressure of the pressure control bottle 5 reaches the required set value.

When the utility model is used, before the cricothyroid membrane retrogradely guides the tracheal intubation, the positive pressure cavity detection needle system is connected, the high-pressure oxygen is connected, and the gas flow rate and pressure sensitivity of the detection needle are adjusted. Then, the thicker cricothyroid membrane puncture needle is vertically penetrated in the middle of the cricothyroid membrane, and after entering the tracheal cavity, the end of the needle is pressed down toward the chest, so that the cricothyroid membrane puncture needle points along the midline of the neck to the direction of the glottis. Then, the prepared needle body 1 is inserted into the cricothyroid puncture needle and slowly pushed toward the glottis, and the front end of the needle body 1 can reach near the glottis after entering the airway 1-2 cm. When the glottis and airway intima are touched, the indicator valve 9 of the monitor will move to the warning line 11 of the monitor 3. At this time, the needle body 1 can be withdrawn slightly and the direction of needle insertion can be adjusted to move forward, taking advantage of the good directionality of the straight needle body 1 Try repeatedly near the glottis. When the needle tube body 1 can enter the airway without obvious resistance and reaches more than 3 cm and the monitor indicator valve 9 does not move to the monitor warning line 11, it indicates that the front end of the needle tube body 1 has entered the open oropharyngeal cavity through the glottis. Separate the end of the needle body 1 from the outlet hole 7 of the monitor, insert a "J"-shaped guide wire through the lumen of the needle body 1, and directly enter the oropharyngeal cavity and reversely pull the endotracheal tube inserted from the oral or nasal cavity through the oropharyngeal cavity. Door access to the trachea enables retrograde cricothyroid-guided tracheal intubation. Generally, when exhaling, the opening of the glottis is larger, and the needle tube body 1 is easier to pass through.

The probe of the utility model is used for the detection of airways, blood vessels and chambers of a medical human body, which can improve the detection success rate, reduce the detection damage of the probe or the distal end of the extended catheter to the tube wall, and reduce the use of contrast agents.

Claims (5)

1. A positive pressure cavity detector is composed of a needle body (1), a monitor (3), a connecting tube (4) and a pressure control bottle (5) nested and connected in sequence, and is characterized in that: the monitoring The device (3) includes a monitor inlet hole (6), a monitor outlet hole (7), a monitor discharge hole (8), a monitor indicator valve (9), a monitor indicator valve spring (10), a monitor discharge The hole (11), the warning line (17), the red monitor indicator valve (9) is connected with the indicator valve spring (10), the spring force adjustment knob (18) is located at the lumen end of the elastic spring (10), and the monitor exits the hole (7) is connected with the proximal end of the needle body (1), the monitor inlet hole (6) is connected with the connecting tube (4), and accommodates the lumen of the red monitor indicator valve (9) and the indicator valve low elastic spring (10) Vertical to the pipeline between the monitor inlet hole (6) and the monitor outlet hole (7), the warning line (17) is engraved on the lumen wall of the elastic spring (10), and the monitor discharge hole (11) is located at the elastic spring (10). ) at the end of the lumen wall, the monitor discharge hole (8) communicates obliquely with the middle and lower section of the lumen where the indicator valve spring (10) is located. 2. The positive pressure cavity detector according to claim 1, characterized in that, the pressure control bottle (5) comprises: a pressure control bottle (5) bottle body, a pressure control bottle outlet pipe (12), a pressure control bottle Bottle inlet pipe (13), pressure control bottle inlet pipe flow adjustment switch (14) and pressure control bottle discharge pipe pressure ball (16), pressure control bottle inlet pipe flow adjustment switch (14) is located at pressure control bottle inlet pipe (13 ), the outlet pipe (12) of the pressure control bottle, the inlet pipe (13) of the pressure control bottle (13) are located on both sides of the bottle body of the pressure control bottle (5), and the pressure ball (16) of the discharge pipe of the pressure control bottle is placed on the discharge pipe of the pressure control bottle In the pipe (15), the pressure control bottle discharge pipe (15) is positioned at the top of the pressure control bottle (5) bottle body. 3. The positive pressure chamber detector according to claim 2, characterized in that, the pressure control bottle discharge pipe (15) and the pressure control bottle discharge pipe pressure ball (16) are placed vertically, and the pressure control bottle discharges Outlet pipe (15) is upside down conical upside down, and pressure ball (16) size and weight ratio are setting value. 4. The positive pressure cavity detector according to claim 1, characterized in that, the distal end of the needle body (1) is a blunt needle head, and the needle body (2) is replaced by an extended needle body (2) as required ( 1) Detection of distant lumens. 5. The positive pressure chamber detector according to claim 1 or 4, characterized in that, the needle tube body (1), its tail and the monitor outlet hole (7) are nestedly connected, and the monitor inlet hole (6 ) is nestedly connected with the pressure control bottle including the pressure control bottle outlet pipe (12) through the connecting pipe (4).

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