阅读说明：本技术 一种医用氧气湿化瓶 (medical oxygen humidification bottle ) 是由 盖彦龙 吕忠华 于 2019-07-02 设计创作，主要内容包括：本发明提供一种医用氧气湿化瓶,包括,瓶体,所述瓶体内部含有湿化液,瓶体,所述瓶体内部含有湿化液,用于对氧气进行湿化；湿化板,位于所述瓶体的底部,用于使氧气充分接触湿化液；在所述瓶体的上侧设置有通入氧气的氧气进口；在所述瓶体的竖向中心位置设置一推进机构和与推进机构连接的检测单元,在检测单元上设置有通入氧气并与所述氧气进口连通的输气管,所述推进机构根据检测单元的预设控制值驱动检测单元及输气管上下移动,改变在医用氧气湿化瓶内的位置,以及与湿化板的距离。本发明推进机构根据检测单元的预设控制值驱动检测单元及输气管上下移动,改变在医用氧气湿化瓶内的位置,以及与湿化板的距离,以便产生湿化程度不同的效果。(The invention provides medical oxygen humidification bottles, which comprise a bottle body, a humidification plate, an oxygen inlet, a propelling mechanism and a detection unit, wherein the bottle body contains humidification liquid for humidifying oxygen, the humidification plate is positioned at the bottom of the bottle body and is used for enabling the oxygen to fully contact the humidification liquid, the upper side of the bottle body is provided with the oxygen inlet for introducing the oxygen, the vertical center of the bottle body is provided with the propelling mechanism and the detection unit connected with the propelling mechanism, the detection unit is provided with an air conveying pipe for introducing the oxygen and communicated with the oxygen inlet, and the propelling mechanism drives the detection unit and the air conveying pipe to move up and down according to a preset control value of the detection unit, so that the position in the medical oxygen humidification bottle and the distance between the medical humidification bottle and the humidification plate are changed.)

1, medical oxygen humidification bottle, its characterized in that includes:

the humidifying device comprises a bottle body, a humidifying device and a control device, wherein the bottle body contains humidifying liquid for humidifying oxygen;

the humidifying plate is positioned at the bottom of the bottle body and is used for enabling oxygen to fully contact humidifying liquid;

a bottle cap is arranged on the upper side of the bottle body, and an oxygen inlet for introducing oxygen and an oxygen outlet after humidification are arranged on two sides of the bottle body or on the bottle cap;

propelling mechanism and detecting unit connected with the propelling mechanism are arranged at the vertical center of the bottle body, the detecting unit is provided with a gas pipe which is used for introducing oxygen and communicated with the oxygen inlet, the propelling mechanism drives the detecting unit and the gas pipe to move up and down, and the position of the gas pipe in the medical oxygen humidification bottle and the distance between the gas pipe and the humidification plate are changed;

the propelling mechanism comprises a propelling cylinder, an upper clamping plate, a lower clamping plate, a propelling slideway and an -th roller, the tail end of the gas pipe is connected with the steel wire, and the propelling cylinder pushes the steel wire to move so as to drive the gas pipe to move;

the air delivery pipe comprises a closed chamber, wherein a cavity is arranged in the closed chamber and is used for containing the air delivery pipe and a circuit board for detecting and processing the air delivery pipe, the middle part of the closed chamber is provided with air delivery pipe containing bodies, the inner parts of the air delivery pipe containing bodies are also cavities, a connector is arranged in the air delivery pipe containing bodies, steel wires and the air delivery pipe are connected to , the rear end of each air delivery pipe containing body is provided with a closed steel wire sleeve, the steel wires are arranged in the steel wire sleeve, the outer side of the front end of the closed chamber is provided with a position sensor, the position sensor is used for detecting the position of the surface layer of the humidifying plate by emitting pulse waves and receiving the pulse waves, and is connected with a main control circuit board through a lead;

the sealed chamber around set up two gasbags about to upper and lower both sides all set up the gasbag the tip of gasbag be provided with inflation inlet and inflation inlet down respectively, upper and lower inflation inlet is connected with air guide cavity, is connected with the air duct in the side of air guide cavity, to the gasbag air feed, set up the oxygen access opening that the oxygen suppliment gas lets in on the air guide cavity, it passes through the tube coupling with the oxygen import to with oxygen in through steel wire sleeve input air guide.

2. The medical oxygen humidification bottle as claimed in claim 1, wherein the propulsion cylinder is disposed on a support plate, a cylinder support frame is disposed on the support plate, and an upper clamp plate and a lower clamp plate are disposed at the end of the propulsion cylinder, and clamp a wire connected to the end of a piston rod of the propulsion cylinder.

3. The medical oxygen humidification bottle as claimed in claim 2, wherein a propelling slide is disposed behind the upper and lower clamping plates to ensure the steel wire to advance along a predetermined track, and sets of rollers are disposed at two ends of the propelling slide respectively, and the steel wire enters the telescopic tube through the wire feeding slide.

4. The medical oxygen humidification bottle as claimed in claim 3, wherein a steel wire and a conveying channel of the gas pipe are arranged in the horizontal middle positions of the gas pipe accommodating body, the connector and the closed chamber, openings are arranged in the horizontal middle positions of the three parts for the steel wire or the gas pipe to pass through, an positioning seat is further connected between the front ends of the gas pipe accommodating body and the closed chamber, and the middle part of the positioning seat is a through hole for positioning the gas pipe.

5. The medical oxygen humidification bottle as claimed in claim 3, wherein the air guide tube is connected with the air pump through the inside of the telescopic tube from the air guide cavity, a flowmeter is arranged on the air guide tube connected with the air pump, the steel wire extends out from the connector and is connected to the tail end of the piston rod of the propulsion cylinder through the closed chamber, the air guide cavity and the inside of the telescopic tube, wires are connected to the circuit board, and the wires pass through the wire guide tube in the closed chamber, pass through the air guide cavity and the inside of the telescopic tube and are connected to the control unit.

6. The medical oxygen humidification bottle as claimed in claim 3, wherein the telescopic tube comprises an inner tube, a middle tube and an outer tube, the end of the inner tube is connected with the air guide cavity, the end of the outer tube is connected with the push tube oil cylinder, the middle part of the inner tube is a through hole, and an th th boss is arranged at the connecting end of the inner tube and the air guide cavity;

the outer tube is provided with a second convex shoulder in the middle of the inner cavity, the second convex shoulder is divided into a front cavity and a rear cavity, a second spring is arranged on the front side of the inner cavity of the outer tube, and the front end and the rear end of the second spring abut against two ends of the inner side of the front side of the inner cavity of the outer tube; and the foremost end of the outer pipe is provided with a disc boss which is used for being connected with a push pipe oil cylinder.

7. The medical oxygen humidification bottle as claimed in claim 6, wherein a th tension sensor is connected to an end of the th spring, a second tension sensor is connected to an end of the second spring, and the two tension sensors respectively detect tension of the springs to determine the expansion and contraction length of the telescopic tube.

8. The medical oxygen humidification bottle as claimed in claim 7, wherein the distance d between the air pipe and the surface layer of the humidification plate is detected by the position sensor, and if the distance d is detected>d₁Then, it means that the gas delivery point is far from the surface layer of the humidifying plate and oxygen can not be humidified sufficiently, wherein d₁The preset distance is 40-45 mm;

set distance d₂If the distance between the position sensor and the surface layer of the humidifying plate is d₁<d<d₂Then only the inner tube is elongated, if d>d₂Then, after the inner tube is stretched to the limit, the middle tube is stretched.

9. The medical oxygen humidification bottle as claimed in claim 8, wherein the telescopic tube has a telescopic length satisfying the following formula (1)

Δ l obtained in the formula_iThe telescopic length of the telescopic pipe is the telescopic length of the telescopic pipe, and the moving displacement of the pipe pushing oil cylinder is also the telescopic length of the telescopic pipe;

in the formula, F_iIndicating every moments of the th springMeasured by said th tension sensor, f₁Representing the spring constant of the th spring F_jRepresenting the elastic force of the second spring at each time instant , the magnitude of which is measured by said second tension sensor, f₂Representing the spring constant of the second spring;

10. The medical oxygen humidification bottle of claim 1 wherein the humidification fluid is distilled water.

Technical Field

The invention relates to the technical field of artificial oxygen therapy, in particular to medical oxygen humidification bottles.

Background

In order to achieve the purpose of oxygen humidification, medical oxygen humidification bottles are needed to be added between an oxygen supply center and a nasal oxygen tube (or an oxygen supply mask) so that the continuously dry oxygen can be humidified after passing through humidification liquid in the medical oxygen humidification bottles and then enters the patient body through the nasal oxygen tube (or the oxygen supply mask).

The existing medical oxygen humidification bottle has the following defects:

(1) when the humidifying liquid is reduced to , the humidifying effect is greatly reduced, and a new medical oxygen humidifying bottle needs to be replaced, so that the resource utilization is insufficient, and the resource waste is easily caused;

(2) the air inlet pipe is often directly connected with the oxygen cylinder and the humidifying liquid, and the suck-back phenomenon is easy to occur due to improper operation, so that the adverse effect is caused on the air inlet valve and the oxygen cylinder.

In particular, the oxygen output condition of the medical oxygen humidification bottle in the prior art cannot be properly adjusted.

Disclosure of Invention

The invention aims to provide medical oxygen humidification bottles to solve the problem that the oxygen output cannot be adjusted.

In order to achieve the above object, the present invention provides medical oxygen humidification bottle, comprising:

the method comprises the following steps:

the humidifying device comprises a bottle body, a humidifying device and a control device, wherein the bottle body contains humidifying liquid for humidifying oxygen;

the humidifying plate is positioned at the bottom of the bottle body and is used for enabling oxygen to fully contact humidifying liquid;

an oxygen inlet for introducing oxygen and a humidified oxygen outlet are formed in the upper side of the bottle body;

pushing mechanism and detecting unit connected with the pushing mechanism are arranged at the vertical center of the bottle body, the detecting unit is provided with a gas pipe which is used for introducing oxygen and communicated with the oxygen inlet, the pushing mechanism drives the detecting unit and the gas pipe to move up and down, and the position of the gas pipe in the medical oxygen humidifying bottle and the distance between the gas pipe and the humidifying plate are changed;

the propelling mechanism comprises a propelling cylinder, an upper clamping plate, a lower clamping plate, a propelling slideway and an -th roller, the tail end of the gas transmission pipe is connected with the steel wire, and the propelling cylinder pushes the steel wire to move so as to drive the gas transmission pipe to move;

the air delivery pipe comprises a closed chamber, wherein a cavity is arranged in the closed chamber and is used for accommodating an air delivery pipe and a circuit board for detecting and processing data of the air delivery pipe, the middle part of the closed chamber is provided with air delivery pipe accommodating bodies, the insides of the air delivery pipe accommodating bodies are also cavities, a connector is arranged in the air delivery pipe accommodating bodies and connects a steel wire with the air delivery pipe at , the rear end of each air delivery pipe accommodating body is provided with a closed steel wire sleeve in which the steel wire is arranged, the outer side of the front end of the closed chamber is provided with a position sensor which detects the position of the surface layer of the humidifying plate by emitting pulse waves and receiving the pulse waves, and the position sensor is connected with a main control circuit board which is connected with a control unit through a lead;

the sealed chamber around set up two gasbags about to upper and lower both sides all set up the gasbag the tip of gasbag be provided with inflation inlet and lower inflation inlet respectively, upper and lower inflation inlet is connected with air guide cavity, is connected with the air duct in the side of air guide cavity, to the gasbag air feed, open the oxygen access mouth that is equipped with the oxygen suppliment gas and lets in on the air guide cavity, it passes through the tube coupling with the oxygen import to with oxygen in steel wire sleeve input air guide.

, the propulsion cylinder is arranged on a support plate, a cylinder support frame is arranged on the support plate, and the tail end of the propulsion cylinder is provided with an upper clamping plate and a lower clamping plate which clamp a steel wire connected to the end part of a piston rod of the propulsion cylinder.

, the rear sides of the upper and lower clamping plates are provided with pushing slideways to ensure the steel wire to move forward along the preset track, both ends of the pushing slideways are respectively provided with groups of rollers, and the steel wire enters the telescopic pipe through the wire feeding slideways.

step by step the horizontal intermediate position that the gas-supply pipe held the body, connector and sealed chamber is provided with the transfer passage of steel wire and gas-supply pipe, all is provided with the opening in three's horizontal intermediate position department for pass with steel wire or gas-supply pipe, still be connected with location seat between the front end that the gas-supply pipe held the body and sealed chamber, the intermediate part of location seat is the perforating hole, is used for the location the gas-supply pipe.

, the air duct is connected with the air pump through the inside of the telescopic tube from the air guide cavity, the air duct connected with the air pump is provided with a flowmeter, the steel wire extends out from the connector and is connected to the tail end of the piston rod of the propulsion cylinder through the inside of the sealed chamber, the air guide cavity and the telescopic tube, the circuit board is connected with a lead, and the lead passes through the lead pipe in the sealed chamber, the air guide cavity and the inside of the telescopic tube and is connected to the control unit.

, the extension tube comprises an inner tube, a middle tube and an outer tube, wherein the end part of the inner tube is connected with an air guide cavity, the end part of the outer tube is connected with a tube pushing oil cylinder, the middle part of the inner tube is a through hole, and a th th boss is arranged at the connecting end of the inner tube and the air guide cavity;

the outer tube is provided with a second convex shoulder in the middle of the inner cavity, the second convex shoulder is divided into a front cavity and a rear cavity, a second spring is arranged on the front side of the inner cavity of the outer tube, and the front end and the rear end of the second spring abut against the two ends of the inner side of the front side of the inner cavity of the outer tube; and the foremost end of the outer pipe is provided with a disc boss which is used for being connected with a push pipe oil cylinder.

, a th tension sensor is connected to the end of the th spring, a second tension sensor is connected to the end of the second spring, and the two tension sensors respectively detect the tension of the springs to determine the extension and contraction length of the telescopic tube.

, detecting the distance d between the air pipe and the surface layer of the humidifying plate by a position sensor, if the distance d is more than d₁It means that the gas delivery point is far away from the surface layer of the humidifying plate, and oxygen can not be humidified sufficiently, which means thatIn d₁The preset distance is 40-45 mm;

set distance d₂If the distance between the position sensor and the surface layer of the humidifying plate is d₁＜d＜d₂Then only the inner tube is elongated if d > d₂Then, after the inner tube is stretched to the limit, the middle tube is stretched.

, the telescopic length of the telescopic tube satisfies the following formula (1)

Δ l obtained in the formula_iThe telescopic length of the telescopic pipe is the telescopic length of the telescopic pipe, and the moving displacement of the pipe pushing oil cylinder is also the telescopic length of the telescopic pipe;

in the formula, F_iRepresenting the elastic force of spring at each time , measured by the tension sensor, f₁Representing the spring constant of the th spring F_jRepresenting the elastic force of the second spring at each time instant , the magnitude of which is measured by said second tension sensor, f₂Representing the elastic coefficient of the second spring;

to round the symbol, at d₁＜d＜d₂Has a value of zero, where d > d₂When it is used, its value is 1.

, the wetting liquid is distilled water.

Compared with the prior art, the medical oxygen humidification bottle has the beneficial effects that the propelling mechanism and the detection unit connected with the propelling mechanism are arranged at the vertical central position of the bottle body, the detection unit is provided with the gas transmission pipe which is introduced with oxygen and communicated with the oxygen inlet, the propelling mechanism drives the detection unit and the gas transmission pipe to move up and down according to the preset control value of the detection unit, the position in the medical oxygen humidification bottle and the distance between the medical oxygen humidification bottle and the humidification plate are changed, and the effects of different humidification degrees and different oxygen output amounts are generated.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view of a th embodiment of a medical oxygen humidification bottle

FIG. 2 is a second schematic diagram of a medical oxygen humidification bottle according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a propulsion mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a detecting unit according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a telescopic tube according to an embodiment of the present invention.

Detailed Description

Preferred embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the invention, and do not limit the scope of the invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In addition, it should be noted that in the description of the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" shall be used , for example, they may be fixedly connected, detachably connected, or physically connected, mechanically connected, electrically connected, directly connected or indirectly connected through an intermediate medium, or connected between two elements.

Please refer to fig. 1 and 2, which are schematic structural diagrams and a second structural diagram of a medical oxygen humidification bottle according to an embodiment of the present invention, including a bottle body 100 loaded with a humidification liquid, an oxygen inlet 104 for introducing oxygen and an oxygen outlet 103 for humidifying oxygen are disposed on an upper side of the bottle body 100, a bottle cap 102 is disposed above the bottle body 100, the oxygen inlet and the oxygen outlet may be disposed on two sides of the bottle body or disposed on the bottle cap 102, a humidifying plate is disposed at a bottom inside the bottle body 100, the humidifying plate 101 is disposed at the bottom of the bottle body 100, fine and dense pores are uniformly distributed on the humidifying plate 101, the pores are communicated with each other to enable oxygen to fully contact the humidification liquid and enhance the humidification effect of oxygen, in this embodiment, an adjusting valve is disposed on both the oxygen inlet 104 and the oxygen outlet 103, and the oxygen inlet and the oxygen outlet can be externally connected with an oxygen transportation device and an oxygen utilization device, in order to adjust the position of the oxygen humidification bottle, in this embodiment, a propulsion unit 105 and a detection unit 106 connected with the detection unit 106, which is disposed on the detection unit 106, and controls the propulsion unit and the propulsion unit 52, and the detection unit to generate different oxygen transport driving values according to the detection of the humidification liquid.

Referring to fig. 2, a schematic structural diagram of a propulsion mechanism according to an embodiment of the present invention is shown, in the embodiment of the present invention, the propulsion mechanism includes a propulsion cylinder 32, an upper clamp plate 33, a lower clamp plate 33, a propulsion slide 35, and a -th roller 34, in the embodiment of the present invention, a distal end of a gas pipe 52 is connected to a steel wire 4, the propulsion cylinder 32 pushes the steel wire 4 to move, and further drives the gas pipe to move, the propulsion cylinder 32 is disposed on a support plate 3, a cylinder support frame 31 is disposed on the support plate 3, the upper clamp plate 33 and the lower clamp plate 33 are disposed at a distal end of the propulsion cylinder 32, and clamp the steel wire 4 connected to a rod end of the propulsion cylinder 32, in the embodiment, the steel wire 4 has a hardness of , and can be driven by the propulsion cylinder 32 to move forward, the propulsion slide 35 is disposed at a rear side of the upper clamp plate 33 to ensure that the steel wire 4 moves forward along a preset track, and two ends of the propulsion slide 35 are respectively disposed with a group of a of a group of , and the steel wire is slid into a telescopic cylinder 40 of the telescopic pipe connected to the.

Referring to fig. 2, which is a schematic structural diagram of a detection unit according to an embodiment of the present invention, the detection unit includes a control portion 1, which processes position information of each element by collecting position information of an air pipe, and transmits a control instruction to the air pipe and a pushing mechanism respectively to control movement of the air pipe and the pushing mechanism.

Specifically, the air delivery pipe comprises a closed chamber 54, a cavity is arranged in the closed chamber 54 and used for containing the air delivery pipe 52 and the circuit board 13 for processing data for detecting the air delivery pipe 52, air delivery pipe containing bodies 55 are arranged in the middle of the closed chamber 54, the air delivery pipe containing bodies 55 are also hollow, a connecting head 53 is arranged in each hollow, and enables the steel wire 4 and the air delivery pipe 52 to be , in the invention, the length of the air delivery pipe is between 5 cm and 8cm, in the embodiment, the steel wire 4 is connected with the air delivery pipe 52 in a welding mode or a plugging mode and the like.

Specifically, a steel wire 4 and a conveying channel of the air delivery pipe 55 are arranged in the horizontal middle positions of the air delivery pipe accommodating body 55, the connecting head 53 and the closed chamber 54, openings are formed in the horizontal middle positions of the three parts, the steel wire or the air delivery pipe penetrates through the openings, an positioning seat 56 is further connected between the air delivery pipe accommodating body 55 and the front end of the closed chamber 54, the middle part of the positioning seat 56 is a through hole and is used for positioning the air delivery pipe 52, the positioning seat is structurally arranged in the moving area of the air delivery pipe 52 and ensures that the air delivery pipe cannot bend or fall downwards, the left and right positions of the air delivery pipe 52 can be accurately positioned, the accuracy of air delivery is ensured, a closed steel wire sleeve 64 is arranged at the rear end of the air delivery pipe accommodating body 55, the steel wire 4 is installed in the sleeve 64 to avoid bending or blocking of the steel wire, a position sensor 14 is arranged on the outer side of the front end of the closed chamber 54 and is used for detecting the position of the surface layer 90 of the humidifying plate by transmitting a pulse wave and receiving the pulse wave, the position sensor 14 is connected with a circuit board 13, the circuit board 13 is connected with the control unit 1 through a lead wire, and the cavity.

In order to ensure that the cavity in the inner cavity of the closed chamber 54 is larger at the upper part than at the lower part of the gas pipe accommodating body 55, the invention can ensure that the circuit board 13 has enough accommodating space and the balance of the closed chamber 54.

In the invention, the closed chamber 54, the gas pipe accommodating body 55 and the connecting head are made of plastic or metal, in order to ensure that the detection unit can work in a liquid environment, the upper and lower gas bags 6 are arranged around the closed chamber 14, the gas bags 6 are arranged on the upper and lower sides, the closed chamber 14 can be stably arranged at the middle position, the gas pipe is accurately positioned, the end parts of the gas bags 6 are respectively provided with an upper inflation inlet 61 and a lower inflation inlet 62, the upper inflation inlet and the lower inflation inlet are connected with an gas guide chamber 23, a gas guide pipe 22 is connected on the side of the gas guide chamber 23 to supply gas to the gas bags 6, meanwhile, an oxygen introducing inlet 1041 is arranged on the gas guide chamber 23 and is connected with an oxygen inlet 104 through a pipeline, and oxygen is input into the gas pipe 52 through a steel wire sleeve 64.

Referring to fig. 2, in the present invention, the air guide tube is connected to the air pump 21 through the interior of the telescopic tube from the air guide cavity 23, the air guide tube connected to the air pump is provided with a flowmeter 24, the steel wire 4 extends from the connector 53 and passes through the sealed chamber 54, the air guide cavity 23 and the interior of the telescopic tube to be connected to the end of the piston rod of the air cylinder 32, the circuit board 13 is connected to a lead 12, and the lead passes through the air guide cavity 23 and the interior of the telescopic tube from the circuit board through the lead tube 63 in the sealed chamber 54 to be connected to the control unit 1.

Referring to fig. 3, in the present invention, the air guide cavity 23 includes telescopic tube connection end 234, sealed chamber connection end 233, central hole is provided in the middle of the air guide cavity 23, inside which the steel wire 4 and the conducting wire 12 are arranged, an upper air guide hole 231 and a lower air guide hole 232 are respectively provided on both sides of the central hole of the sealed chamber connection end 233, and are respectively connected with the upper inflation inlet 61 and the lower inflation inlet 62, and the air guide tubes 22 are respectively connected to the telescopic tube connection end 234, the air guide cavity 23 is provided to integrate the steel wire, the air guide tubes and the conducting wire on the same component, so as to save space and avoid occupying too much space after entering the sealed chamber 54.

As shown in the figure 4, the telescopic tube comprises an inner tube 43, a middle tube 42 and an outer tube 41, wherein the end part of the inner tube 41 is connected with an air guide cavity 23, the end part of the outer tube 41 is connected with an tube pushing cylinder 40, the middle part of the inner tube 43 is a through hole 431, a 0 th boss 432 is arranged at the connecting end of the air guide cavity 23, the middle tube 42 is provided with circles of a second convex shoulder 423 at the middle part inside, the second convex shoulder 423 divides the inner cavity of the middle tube 42 into a front part and a rear part, circles of a second spring 422 are arranged in the front inner cavity 421, two ends of the second spring 422 abut against two ends inside the front inner cavity 421, the end part of the front inner cavity 421 is an convex flange 425, the end part of the rear inner cavity 424 is connected with the second convex boss 432, the end part of the rear inner cavity 424 is also provided with a second convex boss 426, the inner side wall 426 of the outer tube is connected with the inner side wall of the outer tube 41, the second convex shoulder 414 is arranged in the middle part of the inner cavity 414, the front end of the outer tube is abutted against two ends of the front and two front convex shoulder 413 of the front spring cylinder 412 is connected with the front end of the front spring cylinder 412.

The telescopic pipe is arranged in the invention, the supporting distance of the steel wire is increased in the aspect of , the steel wire is prevented from being bent or broken, and in addition, hair is formed, so that a supporting channel is provided for the guide wire, the air pipe and the steel wire.

The telescopic pipe is controlled by a control unit 1, the end part of a th spring 422 is connected with a tension sensor 429, the end part of a second spring 412 is connected with a second tension sensor 419, the two tension sensors respectively detect the tension of the springs and further determine the telescopic length of the telescopic pipe, the two tension sensors wirelessly transmit detected information into the control unit 1, in the invention, the th spring 422 and the second spring 412 have different elastic coefficients, when the telescopic pipe is subjected to tension, the th spring 422 firstly stretches to drive an inner pipe 43 to extend outwards, and after the telescopic pipe reaches a limit position, the second spring 412 stretches to drive a middle pipe 42 to extend outwards.

The position sensor 14 detects the position of the surface layer of the humidifying plate by sending pulse waves and transmits acquired information to a detection control module, in the invention, the detection control module is arranged in a circuit board 13, the detection control module comprises a data acquisition module, the data acquisition module comprises an coupling protection circuit, a filter circuit, a amplification gain circuit and a sampling storage circuit, the modules are sequentially connected, the coupling protection circuit is used for inhibiting electric interference, a signal passes through the coupling protection circuit, then a required data waveform is obtained through the filter circuit, the required data waveform is restored to an original waveform after being amplified through the amplification gain module, and an acquired current signal is transmitted to the sampling storage circuit for storage after being processed.

In the invention, the data acquisition module is connected with the data processing module, and the data processing module controls the data acquisition module to sample according to the following algorithm:

random sampling is adopted, and for signal waveforms, n sampling points at preset time are selected in each period within every continuous K periods, and every interval time T₀ times, and M times of continuous sampling, in order to ensure the referential performance and accuracy of the sampled data, the time interval delta t of n sampling points selected in each period is calculated according to the following formula (1),

where Δ T represents the time interval of the sample points, a is a correction factor whose magnitude is determined by the number of sample points, between 10 and 15, ω represents the angular frequency of the signal as determined by the performance of the position sensor, β is the initial phase angle, T represents the time of the signal period, and λ represents the peak of the signal waveform.

Sampling by the formula (1), wherein the sampling is denser and the referential property of the sampled data is stronger when the signal amplitude is larger; the sampling samples the signal data according to the preset condition, so that the subsequent signal processing data volume is reduced, and the complex operation of data processing is reduced.

The algorithm for calculating the distance between the breaker and the surface layer of the humidifying plate by the data processing module is as follows:

wherein d represents the distance of the position sensor from the surface layer of the wetting plate after each sampling, n represents n sampling points selected in each periods, and d_iThe distance of the position sensor from the surface of the wetted plate obtained at each sampling point at a time is indicated.

The obtained distance information is transmitted to a control unit 1 through a lead 12, the core of the control unit 1 is an PLC (programmable logic controller), the PLC determines the actions of other elements according to the current distance d, and if the distance d is less than d₀The PLC controller controls said propulsion cylinder 32 to perform a piercing action, i.e. to perform a cutting action, and the propulsion cylinder 32 is cut off at a reduced speed, wherein d₀A predetermined distance, in this embodiment 4.5-5 mm.

In the invention, the output ends of the detection control module, the th tension sensor 429 and the second tension sensor 419 are respectively connected with the control unit, and the output end of the control unit is respectively connected with the propulsion cylinder relay, the air pump relay and the push pipe cylinder relay, which respectively control the connected propulsion cylinder, the air pump and the push pipe cylinder, the start-stop action of the controller, and the acceleration and deceleration of the propulsion cylinder and the push pipe cylinder.

The distance d between the air delivery pipe and the surface layer of the humidifying plate is detected by a position sensor, and if the distance d is more than d₁Then, it means that the gas delivery point is far from the surface layer of the humidifying plate and oxygen can not be humidified sufficiently, wherein d₁The predetermined distance is 40-45mm in this embodiment. Because the invention has two stagesTelescopic, in order to ensure the telescopic pipe to be gradually telescopic, a distance d is set₂If the distance between the position sensor and the surface layer of the humidifying plate is d₁＜d＜d₂Then only the inner tube is elongated if d > d₂Then, after the inner tube is stretched to the limit, the middle tube is stretched.

In the present invention, the telescopic length of the telescopic tube satisfies the following formula (3)

Δ l obtained in the formula_iThe telescopic length of the telescopic pipe is the telescopic length of the telescopic pipe, and the moving displacement of the pipe pushing oil cylinder is also the telescopic length of the telescopic pipe;

in the formula, F_iRepresenting the elastic force of the th spring 422 at each time , measured by the th tension sensor 429, f₁Representing the spring constant of the -th spring 422, F_jRepresenting the elastic force of the second spring 412 at each time , the magnitude of which is measured by said second tension sensor 419, f₂Represents the spring constant of the second spring 412;

to round the symbol, at d₁＜d＜d₂Has a value of zero, where d > d₂When it is used, its value is 1.

After the displacement of the push pipe cylinder 40 is determined, the control unit controls the push pipe cylinder relay to act according to the displacement change. Therefore, the telescopic pipe and the corresponding detection and control elements thereof can meet the real-time change of displacement, facilitate the real-time monitoring and control of the motion of the telescopic pipe and prevent the telescopic pipe from causing unnecessary damage to veins.

In the invention, the stroke of the propulsion cylinder 32 is far larger than that of the pipe pushing cylinder 40, after the gas pipe enters the vein, the propulsion cylinder 32 acts immediately without interfering with the pipe pushing cylinder 40, the propulsion cylinder 32 sends the wire at a constant speed, and if the distance d is less than d₀The cylinder 32 is driven to move in a deceleration way, and after the surface layer of the humidifying plate is punctured, the air pipe 52 just stops moving to avoidAvoid the injury to the chest cavity and the heart.

air bag position sensors 6 are respectively connected on the outer surface of the air bag 6 and send detection information to the detection control module in the circuit board 13 by detecting the distance between the air bag 6 and the side wall of the bottle body, in the invention, after the control unit 1 receives the detection information sent by the detection control module, the inflation quantity in the air bag 6 is determined according to the distance between the air bag 6 and the side wall of the vein.

small gaps are reserved between the air bag and the side wall of the bottle body after the air bag is inflated for the first time so as to allow humidified oxygen to pass through, moreover, in the invention, the distance between the air bag and the vein wall is detected in real time, if the air bag is attached to in an over-tight mode, the air bag is deflated through the valve arranged on the air guide tube, and the humidified oxygen cannot be exhausted.

Specifically, the wetting liquid 8 is distilled water or other liquid which does not chemically react with oxygen.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.