CN203989361U - Liquid gas pressure formula cuff pressure calibration endotracheal tube - Google Patents
Liquid gas pressure formula cuff pressure calibration endotracheal tube Download PDFInfo
- Publication number
- CN203989361U CN203989361U CN201420364006.2U CN201420364006U CN203989361U CN 203989361 U CN203989361 U CN 203989361U CN 201420364006 U CN201420364006 U CN 201420364006U CN 203989361 U CN203989361 U CN 203989361U
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- pressure
- pipe
- calibration
- liquid
- cuff
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Abstract
The utility model discloses a kind of liquid gas pressure formula cuff pressure calibration endotracheal tube, comprise pressure air bag, charge valve, between pressure air bag and charge valve, be provided with pressure calibrating device, pressure calibrating device comprises pressure-measuring pipe, in pressure-measuring pipe, be longitudinally provided with pressure calibration pipe, pressure calibration pipe is provided with contractile liquid storage bubble near charge valve one side, and pressure calibration pipe is provided with air storage bag near pressure air bag one side, liquid storage bubble, pressure calibration pipe and air storage bag communicate, and the tube wall of pressure-measuring pipe is provided with pressure scale.This utility model has overcome the cuff controlled pressure of existing tracheal intubation and has only estimated artificially, easily cause intratracheal pressure excessive, cause the repressive ischemia of local tracheal mucosa and cilium, after tube drawing, can cause tunica mucosa tracheae necrosis to come off, even form local ulcer, after recovery from illness, can cause trachea annular cicatricial stricture, a kind of force value of controlling in cuff is provided, make the suitable liquid gas pressure formula cuff pressure calibration endotracheal tube of intratracheal pressure.
Description
Technical field
This utility model belongs to tracheal intubation field, is specifically related to a kind of liquid gas pressure formula cuff pressure calibration endotracheal tube.
Background technology
Tracheal intubation refers to inserts endotracheal tube the technology of trachea through glottis, this technology can attract and prevent that the emergencies such as mistake suction from providing best first aid condition for airway patency, ventilation oxygen-supplying, respiratory tract.At present, emergency trachea intubation technique has become cardio-pulmonary resuscitation and with the important measures in the anxious Cavity in Critical Patients rescue process of respiratory dysfunction, endotracheal intubation is important rescue technology conventional in rescue service, be in management of respiratory most widely used general, the most effectively, one of means efficiently, be the basic skill that medical worker must skillfully grasp, rescue patient life, reduction case fatality rate are played to vital effect.
When tracheal intubation is inserted trachea, be generally the front portion that a cuff is located at trachea, after insertion, in cuff, inflate, cuff expands and contacts with inner surface of trachea, thereby trachea is sealed by cuff, relies on endotracheal tube ventilation.But, because endotracheal mucosa is fragile, if while being subject to excessive pressure, easily cause the repressive ischemia of local tracheal mucosa and cilium.Therefore, need to control the pressure in cuff, avoid pressure excessive.Existing endotracheal tube comprises endotracheal tube, and the front portion of endotracheal tube is arranged with cuff, is also provided with the pressure air bag of impression cover intraluminal pressure, and pressure air bag is connected with conduit with cuff, and for transmitting the pressure in cuff, the rear end of pressure air bag is charge valve.Charge valve can be used syringe, in pressure air bag, inflates, and the pressure in cuff be inflated or be bled to strengthen or reduce to gas from entering cuff, to charge valve via pressure air bag, conduit by syringe.But generally, the pressure of tracheal tampon is estimated by artificial press pressure air bag, and there is error with practical situation in artificial estimation, therefore still cannot avoid the repressive ischemia of trachea local tracheal mucosa and cilium, causes trachea impaired.
Utility model content
The technical problems to be solved in the utility model is to estimate artificially for the cuff controlled pressure of existing tracheal intubation, easily causes intratracheal pressure excessive, causes the problem of local tracheal mucosa and the repressive ischemia of cilium; A kind of liquid gas pressure formula cuff pressure calibration endotracheal tube that shows cover intraluminal pressure value is provided.
In order to solve the problems of the technologies described above, this utility model provides following technical scheme: liquid gas pressure formula cuff pressure calibration endotracheal tube, comprise pressure air bag, charge valve, between pressure air bag and charge valve, be provided with pressure calibrating device, pressure calibrating device comprises pressure-measuring pipe, in pressure-measuring pipe, be longitudinally provided with pressure calibration pipe, pressure calibration pipe is provided with contractile liquid storage bubble near charge valve one side, in liquid storage bubble, is full of liquid; Pressure calibration pipe is provided with air storage bag near pressure air bag one side, and liquid storage bubble, pressure calibration pipe and air storage bag communicate, and the tube wall of pressure-measuring pipe or pressure calibration pipe is provided with pressure scale.
The liquid gas pressure formula cuff pressure calibration endotracheal tube that adopts technical solutions of the utility model, is provided with pressure calibrating device between pressure air bag and charge valve, and pressure calibrating device comprises pressure-measuring pipe; Pressure-measuring pipe is charge valve to the passage of pressure air bag discharge pressure.In pressure-measuring pipe, be longitudinally provided with pressure calibration pipe, pressure calibration pipe is provided with contractile liquid storage bubble near charge valve one side, in liquid storage bubble, is full of liquid, and pressure calibration pipe is provided with air storage bag near pressure air bag one side, and liquid storage bubble, pressure calibration pipe and air storage bag communicate; Liquid storage bubble is made with contractile material film, after experiencing pressure, liquid storage bubble shrinks, liquid in liquid storage bubble is discharged, after being subject to negative pressure, avoid excessive expansion, pressure calibration pipe is for demarcating the position of the liquid of discharging from liquid storage bubble, be similar to the hydrargyrum liquid level of thermometer, just thermometer is to experience temperature to make level change, air storage bag and pressure calibration pipe outer wall are not collapsible, air storage bag is experienced pressure and is changed promotion liquid level to air storage bag one side shifting, and the gas of pressure calibration pipe is pushed in air storage bag.The tube wall of pressure-measuring pipe is provided with pressure scale; The tube wall of pressure-measuring pipe or pressure calibration pipe is provided with pressure scale; Pressure scale is the scale on pressure calibration pipe for the vacuole that shows liquid storage bubble, and then shows the force value in cuff for endotracheal catheter.
Owing to pushing gas by charge valve in pressure-measuring pipe, air pressure gives liquid storage bubble pressure, liquid in liquid storage bubble is discharged, opposite side to pressure calibration pipe moves, and air storage bag and pressure calibration pipe outer wall are not collapsible, and the diameter of air storage bag volume and pressure calibration pipe is certain, according to Boyle's law under quantitative constant temperature, the volume of ideal gas and the pressure of gas are inversely proportional to, and under the identical state of temperature, the gas relational expression under A, B two states can be expressed as: P
av
a=P
bv
btherefore, under certain pressure, liquid storage steeps compressed volume and is divided by the cross section of pressure calibration pipe the distance that liquid level moves, the gas pressure being subject to according to the calibrating length liquid storage bubble of the liquid displacement in liquid storage bubble, can demarcate the gas pressure of charge valve input pressure air bag, then the gas pressure of nominal pressure air bag.Can control the force value in cuff according to the shift position of liquid, and then regulate endotracheal pressure, make the pressure in cuff suitable, thereby make the pressure of trachea impression suitable, exempt from cuff for endotracheal catheter internal pressure excessive.
Further, the bubble wall of described liquid storage bubble is plastic sheeting or silica gel thin film.Pressure calibration bore is thinner, because negative pressure and the effect of fluid molecule tension force make liquid in liquid storage bubble and pressure calibration pipe in steady statue.
Further, on described pressure-measuring pipe, from charge valve one side to pressure air bag one side, be provided with successively low-pressure area, Suitable Area and the higher-pressure region of being divided by graticule.Low pressure, the suitable and high pressure of showing directly perceived, during operation, only need to control liquid level in Suitable Area, the more convenient operation of the form of comparative observation scale.
Further again, the liquid capacity of depositing under described liquid storage bubble normal condition equates with the volume of pressure calibration pipe.The amount of liquid maximum of liquid storage bubble can be full of whole pressure calibration pipe, avoids unnecessary overflow to air storage bag.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Fig. 1 is the schematic diagram of this utility model liquid gas pressure formula cuff pressure calibration endotracheal tube embodiment.
The specific embodiment
As shown in Figure 1, liquid gas pressure formula cuff pressure calibration endotracheal tube, comprise pressure air bag 1, charge valve 2, between pressure air bag 1 and charge valve 2, be provided with pressure calibrating device, pressure calibrating device comprises pressure-measuring pipe 3, the interior pressure calibration pipe 4 that is longitudinally provided with of pressure-measuring pipe 3, pressure calibration pipe 4 is provided with contractile liquid storage bubble 5 near charge valve 2 one sides, in liquid storage bubble 5, is full of liquid; Pressure calibration pipe 4 is provided with air storage bag 6 near pressure air bag 1 one sides, and liquid storage bubble 5, pressure calibration pipe 4 and air storage bag 6 communicate, and pressure-measuring pipe 3 tube walls are provided with pressure scale; The bubble wall of described liquid storage bubble 5 is plastic sheeting; On described pressure-measuring pipe 3, from charge valve 2 one sides to pressure air bag 1 one sides, be provided with successively low-pressure area, Suitable Area and the higher-pressure region of being divided by graticule; Described liquid storage steeps the liquid capacity of depositing under 5 normal conditions and equates with the volume of pressure calibration pipe 4.
In specific implementation process, the bubble wall of liquid storage bubble 5 is made with plastic sheeting, scale graticule is: low-pressure area pressure is 0-25mmHg, Suitable Area pressure is 25-35mmHg, higher-pressure region pressure is for being greater than 35 mmHg, and charge valve 2 adopts syringe form, and the injection head of syringe is connected with pressure-measuring pipe 3, between pressure air bag 1 and cuff 7, by plastic catheter, be connected, cuff 7 is sheathed on the front portion of endotracheal tube 8; Liquid storage bubble 5 is located at pressure calibration pipe 4 near the end of charge valve 2 one sides, and air storage bag 6 is located at the below of pressure calibration pipe 4, and air storage bag 6 is connected with pressure calibration pipe 4 near a side of charge valve 2.During operation, endotracheal tube 8 and cuff 7 are put into trachea, then to the interior inflation of cuff 7, with charge valve 2 to the interior injecting gas of pressure-measuring pipe 3, gas is through pressure calibration pipe 4, pressure air bag 1, conduit is full of cuff, now, liquid storage bubble 5 is due to the gas pressure being subject in pressure-measuring pipe 3, liquid storage bubble 5 shrinks, liquid in liquid storage bubble 5 is discharged, in pressure calibration pipe 4 to pressure air bag 1 one side shiftings, gas in pressure calibration pipe 4 moves in air storage bag 6, maintain balance, if liquid level is when low-pressure area, with charge valve 2, in pressure-measuring pipe 3, inflate again, if liquid level is when higher-pressure region, gas in pressure-measuring pipe 3 is extracted out by charge valve 2, until liquid level is positioned at Suitable Area, now, pressure in cuff 7 is suitable, cuff 7 expands trachea is supported to sealing, utilize endotracheal tube 8 ventilations.
Before concrete operations, needing calibrated scale graticule is the force value of experiencing in actual cuff 7, and the method for demarcation is:
Under the room temperature of 20-25 degree, directly the pressure measuring unit of use standard is connected with pressure calibration pipe 4, make that the pressure of normal pressure determinator is shown as 0, the position on pressure calibration pipe 4 of 25mmHg, 35 mmHg tense marker liquid levels, can show the pressure range that will demarcate.
Certainly, if the pressure graticule of low-pressure area, Suitable Area and higher-pressure region becomes other pressure show values, the bubble wall of liquid storage bubble 5 adopts silica gel thin film, and the tube wall of pressure calibration pipe 4 is provided with pressure scale, all within protection domain.
For a person skilled in the art; do not departing under the prerequisite of this utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that this utility model is implemented.
Claims (4)
1. liquid gas pressure formula cuff pressure calibration endotracheal tube, comprise pressure air bag, charge valve, it is characterized in that: between pressure air bag and charge valve, be provided with pressure calibrating device, pressure calibrating device comprises pressure-measuring pipe, in pressure-measuring pipe, be longitudinally provided with pressure calibration pipe, pressure calibration pipe is provided with contractile liquid storage bubble near charge valve one side, in liquid storage bubble, is full of liquid; Pressure calibration pipe is provided with air storage bag near pressure air bag one side, and liquid storage bubble, pressure calibration pipe and air storage bag communicate, and the tube wall of pressure-measuring pipe or pressure calibration pipe is provided with pressure scale.
2. liquid gas pressure formula cuff pressure calibration endotracheal tube as claimed in claim 1, is characterized in that: the bubble wall of described liquid storage bubble is plastic sheeting or silica gel thin film.
3. liquid gas pressure formula cuff pressure calibration endotracheal tube as claimed in claim 2, is characterized in that: on described pressure-measuring pipe, from charge valve one side to pressure air bag one side, be provided with successively low-pressure area, Suitable Area and the higher-pressure region of being divided by graticule.
4. liquid gas pressure formula cuff pressure calibration endotracheal tube as claimed in claim 2, is characterized in that: the liquid capacity of depositing under described liquid storage bubble normal condition equates with the volume of pressure calibration pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364006.2U CN203989361U (en) | 2014-07-03 | 2014-07-03 | Liquid gas pressure formula cuff pressure calibration endotracheal tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364006.2U CN203989361U (en) | 2014-07-03 | 2014-07-03 | Liquid gas pressure formula cuff pressure calibration endotracheal tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203989361U true CN203989361U (en) | 2014-12-10 |
Family
ID=52029442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364006.2U Expired - Fee Related CN203989361U (en) | 2014-07-03 | 2014-07-03 | Liquid gas pressure formula cuff pressure calibration endotracheal tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203989361U (en) |
-
2014
- 2014-07-03 CN CN201420364006.2U patent/CN203989361U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150703 |
|
| EXPY | Termination of patent right or utility model |