CN207755618U - A kind of trachea cannula - Google Patents

Abstract

A kind of trachea cannula, including gas-guide tube, gas tube, the periphery place of gas-guide tube insertion end are equipped with air bag, equipped with regulating course in airbag chamber body between air bag inner wall and air guide pipe outer wall.Using the contraction and expansion of regulating course, air bag fullness degree can be realized with the diameter of tracheae and be automatically adjusted.It compared with traditional tracheal intubation airbag, reduces air bag and is injured caused by tracheae, improve the comfort level of patient, reduce the workload of medical staff, it is most suitable clinically to promote and apply.

Description

A kind of trachea cannula

Technical field

The utility model belongs to the field of medical instrument technology, and in particular to a kind of trachea cannula.

Background technology

Trachea cannula plays particularly important effect during rescue, and it is to protect to establish artificial airway using trachea cannula Demonstrate,prove the effective means of airway patency.The air bag gas of trachea cannula insertion end plays the role of preventing gas leakage and accidentally inhale, and can keep sound Door air flue closing below, to ensure efficiently accomplishing for positive airway pressure.

However, the trachea cannula being often used at present also can damage and destroy to a certain extent the normal physiology dissection of body Function brings harm to patient.The insertion end outer surface of traditional trachea cannula tube body is provided with air bag, cell edges and intubation Tube body is tightly connected and is connected to the air inlet pipe one end being embedded on tube wall, and the other end of air inlet pipe is connected to intake valve, It is slowly inflated into air bag by intake valve.To preferably must be held in a comparison accurate, narrow for the pressure of gas in air bag when use Range, to prevent various complication.However the air flue situation of every patient is not exactly the same, therefore also need to coordinate it is various its His means go to judge whether the aeration quantity in air bag suitable, air bag whether with air flue inner wall tight closure.Once air bag fills Gas is excessive, and hypertonia can lead to tracheal mucosa compression ischemic, oedema, or even rotten to the corn, ulcer, severe patient can cause tracheal fistula or The sequelae such as narrow.Research shows that when air bag is pressed more than 30cmH₂When O, mucous membrane capillary blood flow starts to reduce.When air bag pressure More than 20cmH₂When O, blood flow is blocked completely.Tracheal mucosa compressing is more than certain time, and air bag mucous membrane ischemic will be caused to damage Wound even necrosis, may occur tracheoesophageal fistula when serious.If airbag aeration is insufficient, hypotony may occur in which air flue gas leakage again, Breathing machine ventilation is insufficient, while also easily leading to aspiration pneumonia.Current air bag can not automatically be adjusted according to the change of illness state of patient Section, and once after inflation, timing is needed to detect, it is extremely cumbersome.

Utility model content

Inventor studies above-mentioned problems of the prior art, is carried according to clinical treatment experience for many years Supply a kind of simple and efficient to handle, air bag filling degree is freely adjustable, the trachea cannula small to Airway damage.

A kind of tracheal cannula, including gas-guide tube, gas tube, the periphery place of gas-guide tube insertion end equipped with air bag, Regulating course is equipped in airbag chamber body between air bag inner wall and air guide pipe outer wall.

Further, regulating course is internally provided with stomata.

Further, gas-guide tube rear end is connect with connection tube.

Further, the inlet end setting gas tube of gas tube switchs.

Further, the gas tube switch is selected from pipe lid or pipe clamp.

Preferably, gas tube further includes pressure measuring unit.

The utility model has the beneficial effects that：Trachea cannula described in the utility model utilizes the contraction of regulating course and swollen Swollen, the realization of air bag fullness degree is automatically adjusted with the diameter change of tracheae.When patient airway spasm, air bag is pressurized, regulating course Gas extrusion in stomata goes out regulating course, and regulating course reduces, and air bag is shunk therewith, reduces pressure of the air bag to air flue.Air flue When diastole, regulating course Stomatal Gas amount increases and expands, and air bag expands therewith, and air flue is further closed in air bag, in order to avoid gas leakage.With Traditional tracheal intubation airbag is compared, and reduce air bag by the automatic adjustment of air bag fullness degree injures caused by person's windpipe, The comfort level for improving patient reduces the paresthesia of patient, reduces the workload of medical staff.

Description of the drawings

Fig. 1 can automatically adjust the trachea cannula structural schematic diagram of air bag fullness degree.

Fig. 2 is the enlarged drawing at Figure 1A.

In Fig. 3 catheterization procedures, air bag and regulating course are compressed to structural schematic diagram when minimum state.

Fig. 4 air flue diastoles, airway enlargement, regulating course expansion, the structural schematic diagram that air bag is closed with air flue.

Fig. 5 airway spasms, airway narrows, regulating course are shunk, the structural schematic diagram that air bag is closed with air flue.

The gassiness structural schematic diagram of stomata of Fig. 6 regulating courses, regulating course expansion.

Fig. 7 filling from Stomatal Gas discharge after structural schematic diagram, regulating course shrink.

Specific implementation mode

As shown in Fig. 1 to 5, the trachea cannula that can automatically adjust air bag fullness degree includes gas-guide tube 1, gas tube 2, gas-guide tube It is equipped with air bag 3 at the periphery of insertion end 11, the air bag cavity between air bag inner wall and air guide pipe outer wall is non-cavity body, airbag chamber It is equipped with regulating course 5 in vivo, regulating course is made of the material that may expand and compress.21 phase of insertion end of air bag 3 and gas tube 2 Even, air enters air bag by gas tube, and air bag is full with the expansion of regulating course until with airway walls formation hermetic seal, protects Demonstrate,prove ventilatory effect.The inlet end 22 of gas tube is provided with gas tube switch 23.

Air bag is made of soft texture, material that is elastic good and being not easily broken, and the bladder shape can be olive-shaped, ball Shape or cylindrical shape etc..

Regulating course be can free wxpansion and compression porous material.If Fig. 6 and 7 is a kind of 5 internal structure of regulating course Embodiment, regulating course 5 are internally provided with the cellular structure of stomata 51.As shown in fig. 6, when gassy in stomata, promote to adjust The increase of ganglionic layer volume is regulating course expansion.As shown in fig. 7, after stomata discharge part gas, stomata loses gas and reduces, and promotees Make regulating course volume become smaller i.e. regulating course contraction.In a more specific embodiment, when gas tube, which switchs, to be opened, air enters gas Capsule, the gas in air bag can enter in the stomata of regulating course again, and regulating course volume becomes larger, and air bag is expanded with regulating course and expanded. The air bag of expansion can encounter tracheal wall, since tracheal wall can create antagonism to air bag pressure, make air bag that can not possibly be expanded without limitation, After air bag is expanded to suitable position, gas tube switch is closed.Then during further treatment, as airway walls are to gas The difference of bag pressure power, due to the presence of regulating course stomata, regulating course further can be compressed or be expanded, and realize automatic adjustment gas The closure of the function of capsule fullness degree, effective guarantee trachea cannula rear gasbag and airway walls prevents gas leakage.

Maximum volume after regulating course expansion cannot be more than the maximum inflatable volume of air bag.Air bag size is inserted according to tracheae Cast number is arranged.The regulating course can be reduced with the extruding force that air bag flexibility is shunk, and can also be subtracted to its extruding force with air bag It is weak and expand.

The adjusting layer material, which is selected from sponge, foamed cotton, sizing cotton, rubber cotton, memory sponge, renewable sponge etc., has bullet Property porous material.Specifically for example：Sizing cotton, by polyurethane material, the multiple additives such as foamed dose are mixed and processed； Foamed cotton uses polyethers foaming；It is that natural emulsion raw material foams that rubber cotton, which then uses major ingredient, it has rubber special Property, elastic force is fabulous, resilience is good, the features such as will not deforming.

The inlet end 22 of gas tube 2 is mounted with that gas tube switch 23, gas tube switch are opened, and air bag is by gas tube and outside Boundary's gas communicates, and gas tube switch is closed, and gas tube is closed, and has been cut off outside air and has been communicated with air bag.In an embodiment In, gas tube switch is pipe lid.Pipe lid, which covers after the opening of gas tube inlet end, closes gas tube, and air can not pass through gas tube Into air bag；Whether pipe lid or not after the opening of gas tube inlet end, and gas tube is opened, and air enters air bag by gas tube. In another embodiment, gas tube switch is pipe clamp.After pipe clamp clamps gas tube, gas tube is closed, air can not be by filling Tracheae enters air bag；After pipe clamp, which unclamps, no longer clamps gas tube, gas tube is opened, and air enters air bag by gas tube.If There is no gas tube switch, the material of regulating course is expanded before intubation, causes air bag is full can not implement to be intubated.

Pressure measuring unit 24 is additionally provided in the gas circuit of gas tube inlet end, for measuring the gas pressure in gas tube pipeline. Air bag may rupture in catheterization procedure, and air bag is once rupture, and gas tube will be communicated with the air flue 6 of human body, in gas tube Pressure reduce when not ruptured compared to air bag.It is broken whether medical staff has according to the pressure measuring value of pressure measuring unit assessment air bag Damage.If air bag is damaged, the trachea cannula more renewed in time is intubated again.Because after balloon rupture, the mucus in air flue enters Air bag simultaneously leads to airway infections with the material of regulating course, so the trachea cannula of balloon rupture must be replaced in time.More In further embodiment, warning device is additionally provided on pressure measuring unit, once the pressure value that pressure measuring unit measures is less than or waits In preset pressure value (when the preset pressure value is to be communicated with air flue after balloon rupture, the pressure in gas tube Force value), warning device is alarmed immediately, and medical staff is reminded to replace damaged trachea cannula in time.

Constant volume of the opening of gas tube insertion end 21 to this section of pipeline 25 of opening of inlet end 22.After completing intubation, open Gas tube switchs, and air enters air bag.Expansion is contacted with air for regulating course until air bag is closed with airway walls, and closing at this time is opened It closes.

As shown in figure 4, when air flue diastole, airway walls reduce the pressure of air bag, and regulating course has continuation expansion space, Regulating course further expands after obtaining the gas retained in pipeline 25, until air bag is closed again with airway walls.Such as Fig. 5 institutes Show, when airway spasm, the pressure increase that airway walls narrow to air bag, after regulating course is squeezed, the gas in regulating course is squeezed Go out regulating course to enter in pipeline 25, the pressure in pipeline 25 increases at this time.The pressure that medical staff can show according to pressure measuring unit Force value judges whether to need to open gas tube switch.If measured pressure value is less than preset value but is more than balloon rupture Pressure value when, open gas tube switch, more air inputted to air bag, to meet sky of the regulating course further needed for expansion Then tolerance is again switched off gas tube switch until air bag is closed with airway walls again.It is set in advance if measured pressure value is more than Fixed value illustrates that airway spasm is very severe, need to open gas-filled switching tube and release a part of gas in gas tube pipeline 25, allows tune Ganglionic layer can further be shunk, and squeeze out more gases, until airway walls are restored to normal range (NR) to the extruding force of air bag, so After be again switched off gas tube switch.

The inlet end 22 of gas tube 2 can be connect with syringe, and gas and deflation are given by syringe implementation air bag.Gas-guide tube 1 inlet end 12 is connect with connection tube 4, and connection tube is connect with other equipments such as lung ventilators, implements mechanical ventilation.

In the clinical application example of the trachea cannula for automatically adjusting air bag fullness degree, patient is allowed to be located at dorsal position, Head layback；Set mirror, exposure glottis；Trachea cannula described in the utility model is taken to be inserted into air flue 6 through glottis, at this time trachea cannula Air bag 3 and regulating course 5 are in the minimum state (as shown in Figure 3) of contraction, and gas tube switch is closed；When trachea cannula is inserted into gas Laryngoscope is released behind road；Confirm that gas-guide tube in the accurate location of air flue, rapidly connects connection tube 4 with ready respirator is ready for Tap into row mechanical ventilation；Gas tube switch is opened, air enters air bag by gas tube and enters in the stomata of regulating course, air bag It is expanded as regulating course expands, until being closed with 6 inner wall of air flue, and closes gas tube switch.Due to the presence of regulating course, gas Capsule fullness degree can be automatically adjusted with the diameter of tracheae.When air flue diastole as shown in Figure 4, regulating course expansion, gas enters air bag It is interior, it is closed air flue, in order to avoid gas leakage.As shown in figure 5, working as patient airway spasm, air bag is pressurized, and gas excludes in air bag, regulating course It reduces, reduces the pressure to air flue.After mechanical ventilation, pressure measuring unit is closed, the inlet end of gas tube is connect with syringe, The gas in air bag is released before tube drawing, regulating course loses air and shrinks, and air bag also bounces back therewith, avoids satisfying when tube drawing Full balloon injury air flue implements tube drawing after air bag is no longer full.

Claims (6)

1. a kind of trachea cannula, including gas-guide tube, gas tube, the periphery place of gas-guide tube insertion end is equipped with air bag, which is characterized in that Regulating course is equipped in airbag chamber body between air bag inner wall and air guide pipe outer wall.

2. trachea cannula according to claim 1, which is characterized in that regulating course is internally provided with stomata.

3. trachea cannula according to claim 1, which is characterized in that gas-guide tube rear end is connect with connection tube.

4. trachea cannula according to claim 1, which is characterized in that the inlet end setting gas tube of gas tube switchs.

5. trachea cannula according to claim 4, which is characterized in that the gas tube switch is selected from pipe lid or pipe clamp.

6. trachea cannula according to claim 1, which is characterized in that gas tube further includes pressure measuring unit.