Assembly for connecting high-frequency jet needle and trocar

Abstract

The utility model relates to the field of breathing devices, and provides an assembly for connecting a high-frequency jet needle and a trocar, which comprises a needle cylinder, an air outlet port for mounting the trocar is arranged on the needle cylinder, a first piston is slidably arranged in the needle cylinder, a first through hole is arranged in the middle of the first piston, and a second through hole is arranged in the middle of the first piston. At least one first buffer spring is connected between the first piston and the inner wall of the needle cylinder, an inserting hole is formed in the tail of the needle cylinder, a high-frequency injection needle can be inserted into the inserting hole and the first penetrating hole, and a window is formed in the side wall of the needle cylinder and located at the front end of the first piston. The window is blocked by fingers, gas sequentially passes through the high-frequency injection needle, the needle cylinder and the trocar to enter the airway of the human body, when the air pressure is too large, the gas pushes the first piston to move backwards, discomfort of a patient caused by the too large air pressure is prevented, and the problem that when a high-frequency injection breathing machine conveys oxygen to the patient, the oxygen pressure is possibly too large is solved. Discomfort is easily caused to a patient, and treatment and rehabilitation of the patient are affected.

Description

Technical Field

[0001] The utility model relates to the field of breathing devices, in particular to a component for connecting a high-frequency jet needle and a trocar. Background Art

[0002] At present, the high-frequency jet ventilator is a respiratory device for artificial mechanical ventilation designed for patients who need respiratory support, respiratory therapy and emergency resuscitation based on the principle of high-frequency jet ventilation. It uses a high-pressure gas source to deliver the gas into the airway through a narrow-caliber catheter in a jet manner. Especially after the cricothyroid membrane puncture and catheterization is completed, a high-frequency jet ventilator is required to deliver gas through the airway in the throat. The high-frequency jet ventilator is connected to the cannula needle, and the cannula needle is inserted into the throat to connect to the airway in the throat. The high-frequency jet ventilator delivers oxygen to the patient. When the high-frequency jet ventilator delivers air to the patient, its air pressure is difficult to control. When the oxygen supply pressure is too high, it is easy to cause discomfort to the patient, and even affect the patient's treatment and rehabilitation, affecting the oxygen supply effect. Utility Model Content

[0003] Therefore, in view of the above problems, the utility model proposes a component for connecting a high-frequency jet needle and a cannula needle, which solves the technical problem that when a high-frequency jet ventilator delivers oxygen to a patient, the oxygen pressure may be too high, which may easily cause discomfort to the patient and affect the patient's treatment and rehabilitation.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A component connecting a high-frequency jet needle and a trocar, comprising a syringe, the syringe being provided with an outlet port for mounting the trocar, a first piston being slidably provided in the syringe, a first through-hole being provided in the middle of the first piston, at least one first buffer spring being connected between the first piston and the inner wall of the syringe, an insertion hole being provided at the rear end of the syringe, the high-frequency jet needle being able to be inserted into the insertion hole and the first through-hole, a window being provided on the side wall of the syringe, and the window being located at the front end of the first piston.

[0006] Further:

[0007] A second piston is slidably disposed in the syringe, the second piston is located at the front end of the first piston, a second buffer spring is connected between the first piston and the second piston, and a second through hole is disposed on the second piston, and the high-frequency jet needle can be inserted into the second through hole.

[0008] A vent hole is provided on the side wall of the syringe, and when the window is opened, the vent hole is located at the rear end of the first piston.

[0009] A vent hole is provided on the side wall of the syringe, and when the window is opened, the vent hole is located at the rear end of the first piston.

[0010] A cover body is detachably provided at the rear end of the syringe, and the insertion hole is arranged on the cover body.

[0011] A sealing ring is arranged on the jack.

[0012] A sealing cover is slidably provided on the syringe, and a driving device for driving the sealing cover to slide is provided on the syringe. The sealing cover can open and close the window.

[0013] The driving device is a small electric push rod.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] When the high-frequency jet ventilator supplies oxygen to the patient, the syringe of the present application is connected between the high-frequency jet needle and the cannula needle, the cannula needle is inserted into the throat to connect to the airway in the throat, the jet needle is inserted into the jack and the first perforation, and when supplying air, the finger blocks the window, and the gas enters the human airway through the high-frequency jet needle, the syringe and the cannula needle in turn. When the air pressure is too high, the gas will push the first piston to move backward, and the first buffer spring has a buffering effect, so that the air pressure of the gas entering the human airway can be stabilized at a certain value to prevent the patient from feeling uncomfortable due to excessive air pressure; when exhaling, the finger opens the window, the air pressure in the syringe returns to the atmospheric pressure value, and the first piston is reset due to the action of the first buffer spring; further, the second piston and the first piston are The two pistons have a double buffering effect and a better effect of buffering air pressure; further, when the pressure is very high, the first piston and the second piston will exceed the air vent, and the gas in the syringe will be released through the air vent, and the air vent has a good protective effect; further, the cover body has the functions of sealing and limiting, which is convenient for cleaning, disinfection, maintenance and replacement; further, a sealing ring is arranged on the cover body, and the rear end of the first piston is also a closed space, not only the first buffer spring exerts force on the first piston, but also the gas in the closed space at the rear end exerts force on the first piston, and the buffering effect is better; further, a driving device is arranged on the syringe to drive the sealing cover to open and close the window, instead of blocking the window with manual fingers, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of embodiment 1;

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure after the first piston moves;

[0018] Figure 3 is a schematic structural diagram of a syringe in Embodiment 1;

[0019] Figure 4 is a structural diagram of Embodiment 2;

[0020] Figure 5 is a schematic diagram of the structure of the second embodiment after the first piston moves;

[0021] Figure 6 is a schematic structural diagram of Embodiment 3;

[0022] Figure 7 is a schematic diagram of the structure of the third embodiment after the first piston moves;

[0023] Figure 8 is a schematic structural diagram of Embodiment 4;

[0024] Fig. 9 It is a schematic diagram of the structure of the fourth embodiment after the sealing cover is moved. DETAILED DESCRIPTION

[0025] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0026] Embodiment 1:

[0027] refer to Figures 1 to 3 Embodiment 1 provides a component for connecting a high-frequency jet needle and a trocar, including a syringe 1, a gas outlet port 11 for installing a trocar 3 is provided on the syringe 1, a first piston 12 is slidably provided in the syringe 1, a first through hole 120 is provided in the middle of the first piston 12, a first buffer spring 13 is connected between the first piston 12 and the inner wall of the syringe 1, a plug hole 14 is provided at the rear of the syringe 1, and the high-frequency jet needle 2 can be inserted into the plug hole 14 and the first through hole 120, a window 15 is provided on the side wall of the syringe 1, and the window 15 is located at the front end of the first piston 12. A cover body 16 is detachably provided at the rear end of the syringe 1, and the plug hole 14 is provided on the cover body 16.

[0028] The cover body 16 can also be integrally formed with the syringe 1 and configured as a non-detachable structure. The cover body 16 can be detachably connected via a buckle or other components, which is a well-known structure.

[0029] A sealing ring may be provided on the above-mentioned insertion hole 14, which is a well-known component and is provided according to specific circumstances.

[0030] The working method of the first embodiment is:

[0031] The high-frequency jet needle 2 of the high-frequency jet ventilator is inserted into the jack 14 and the first perforation 120, the cannula needle 3 is installed on the air outlet port 11 of the syringe 1, and the cannula needle 3 is inserted into the throat to connect to the airway of the throat. When supplying air, the finger blocks the window 15, and the gas enters the human airway through the high-frequency jet needle 2, the syringe 1 and the cannula needle 3 in turn. When the air pressure is too high, the gas will push the first piston 12 to move backward, and the first buffer spring 13 has a buffering effect. When exhaling, the finger opens the window 15, and the air pressure in the syringe 1 returns to the atmospheric pressure value. The first piston 12 is reset due to the action of the first buffer spring 13. Repeating this operation can supply oxygen to the patient, so that the air pressure of the gas entering the human airway can be stabilized at a certain value to prevent the patient from feeling uncomfortable due to excessive air pressure.

[0032] Embodiment 2:

[0033] refer to Figures 1 to 4 The main difference between the second embodiment and the first embodiment is that a second piston 17 is slidably provided in the syringe 1 of the second embodiment, the second piston 17 is located at the front end of the first piston 12, a second buffer spring 18 is connected between the first piston 12 and the second piston 17, and a second through hole is provided on the second piston 17, and the high-frequency jet needle 2 can be inserted into the second through hole.

[0034] The second through hole has the same structure as the first through hole 120 and is not shown in the figure.

[0035] The second piston 17 and the first piston 12 of the second embodiment have a double buffering effect and a better effect of buffering air pressure.

[0036] Embodiment three:

[0037] refer to Figures 1 to 6 The main difference between the third embodiment and the first embodiment is that a vent hole 10 is provided on the side wall of the syringe 1 of the third embodiment. When the window 15 is opened, the vent hole 10 is located at the rear end of the first piston 12.

[0038] When the pressure in the syringe 1 is very high and the movement of the first piston 12 is not sufficient to reduce the pressure of the gas, the first piston 12 will exceed the air vent 10, and the gas in the syringe 1 will be released through the air vent 10. The air vent 10 has a good protective effect.

[0039] The structure of the third embodiment can also be arranged on the second embodiment.

[0040] Embodiment 4:

[0041] refer to Figures 1 to 8 The main difference between the fourth embodiment and the first embodiment is that a sealing cover 19 is slidably provided on the syringe 1 of the fourth embodiment, and a driving device 4 for driving the sealing cover 19 to slide is provided on the syringe 1. The sealing cover 19 can open and close the window 15, and the driving device 4 is a small electric push rod.

[0042] The driving device 4 of the fourth embodiment drives the sealing cover 19 to open and close the window 15, replacing manual fingers to block the window 15, which saves manpower but has a high cost.

[0043] The structure of the driving device 4 of the fourth embodiment can also be used in the second and third embodiments, and can be configured according to specific circumstances.

[0044] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A component for connecting a high-frequency jet needle and a trocar, characterized in that: It comprises a syringe, which is provided with an air outlet port for installing a trocar, a first piston is slidably provided in the syringe, a first through hole is provided in the middle of the first piston, at least one first buffer spring is connected between the first piston and the inner wall of the syringe, a socket is provided at the tail of the syringe, a high-frequency jet needle can be inserted into the socket and the first through hole, and a window is provided on the side wall of the syringe, and the window is located at the front end of the first piston.

2. The assembly for connecting a high-frequency jet needle and a trocar according to claim 1, characterized in that: A second piston is slidably disposed in the syringe, the second piston is located at the front end of the first piston, a second buffer spring is connected between the first piston and the second piston, and a second through hole is disposed on the second piston, and the high-frequency jet needle can be inserted into the second through hole.

3. The assembly for connecting a high-frequency jet needle and a trocar according to claim 2, characterized in that: A vent hole is provided on the side wall of the syringe, and when the window is opened, the vent hole is located at the rear end of the first piston.

4. The assembly for connecting a high-frequency jet needle and a trocar according to claim 1, characterized in that: A vent hole is provided on the side wall of the syringe, and when the window is opened, the vent hole is located at the rear end of the first piston.

5. The assembly for connecting a high-frequency jet needle and a trocar according to claim 1, characterized in that: A cover body is detachably provided at the rear end of the syringe, and the insertion hole is arranged on the cover body.

6. The assembly for connecting a high-frequency jet needle and a trocar according to claim 1, characterized in that: A sealing ring is arranged on the jack.

7. An assembly for connecting a high-frequency jet needle and a trocar according to any one of claims 1 to 6, characterized in that: A sealing cover is slidably provided on the syringe, and a driving device for driving the sealing cover to slide is provided on the syringe, and the sealing cover can open and close the window.

8. The assembly for connecting a high-frequency jet needle and a trocar according to claim 7, characterized in that: The driving device is a small electric push rod.

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