CN104474623B - Suction-type anaesthetic vaporizer defecator - Google Patents

Abstract

The invention relates to an inhalation anesthesia evaporative filtering device. The inhalation anesthetic evaporative filtering device with a constant temperature heating function can ensure the stability of the inhaled anesthetic evaporation concentration under different ambient temperatures. The inhalation anesthesia evaporation filtering device includes: a filter housing, a ventilator connection end arranged on one side of the housing, and a subject inhalation end arranged on the other side of the housing. The filter device also includes: a drug storage container communicated with the filter housing, the drug storage container is provided with an evaporating component and a temperature control component, and the temperature control component can heat the anesthetic drug in the drug storage container through the evaporating component, The anesthetic drug in the drug storage container flows into the filter housing after being heated and evaporated.

Description

Inhalation anesthesia evaporative filtration device

technical field

The invention relates to a filter device, in particular to an inhalation type anesthesia evaporation filter device used in clinical medicine.

Background technique

At present, the anesthesia machines equipped in my country's medical treatment are standard clinical routine equipment. The main problems are single function, bulky size, heavy weight, and extremely inconvenient packaging, transportation and assembly. Complex, bulky, inconvenient for installation and transportation. Usually, most of the wounded are multiple injuries and compound injuries. The injuries are complicated and serious, and the trauma range is large. There are many parts that need surgical treatment, and general anesthesia is often required. The effect of general anesthesia is accurate, perfect and rapid, and it can be used as the first choice for surgical anesthesia, but general anesthesia requires high equipment conditions, especially inhalation general anesthesia. There are some disadvantages in the use of total intravenous anesthesia for severe trauma patients: because intravenous general anesthesia mainly adopts compound administration method, the interaction between drugs can cause changes in pharmacokinetics and pharmacodynamics, which makes it more difficult to predict the anesthesia effect , the controllability is poor; when total intravenous anesthesia is shallow, intraoperative awareness is prone to occur; the elimination of intravenous general anesthesia depends on the patient's liver, kidney function and internal environment status, if the patient's liver and kidney function is insufficient, postoperative Complications such as delayed recovery; during intravenous general anesthesia, there is a dose-related inhibition of respiration and circulation, which can easily lead to severe circulation inhibition. Compared with total intravenous anesthesia, patients with inhaled general anesthesia can selectively suppress consciousness while maintaining spontaneous breathing, and wake up more quickly and predictably after surgery, with shorter extubation time and shorter postoperative mechanical ventilation time , the patient left the hospital early.

In order to maximize the medical effect and function, and place more medical equipment in a limited space to save space, we envisage designing the anesthesia machine as small as possible for easy movement, so that it can be used in emergency special cases quick movement and portability. The anesthesia machine commonly used at present does not have an anesthesia waste gas treatment system, and the inhaled anesthetic is discharged into the operating room through the exhaust gas pipe of the anesthesia machine, which will cause air pollution to the operating room which is not spacious during wartime. The portable inhalation anesthesia device is an effective medical device adapted to such a special environment, and its use of closed-loop anesthesia or activated carbon fiber adsorption technology can reduce the air pollution of anesthesia.

At present, a large number of studies at home and abroad have proved the feasibility and effectiveness of using a micro-infusion pump to infuse inhalation anesthetics into the breathing circuit for inhalation anesthesia. The infusion devices using volatile anesthetic drugs currently reported in China include: a long rubber tube with a diameter of about 2mm connected to the threaded tube of the ventilator, a metal three-way switch, and a micro-injection device equipped with a sevoflurane or isoflurane syringe. Pump. Although this method is simple and easy to implement, the main problem is that the volatile concentration of inhaled anesthetics is unstable and the problem of environmental pollution in the operating room caused by inhaled anesthetics has not been solved.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides an inhalation anesthesia evaporation filtering device with a constant temperature heating function, which can ensure the stability of the evaporation concentration of inhalation anesthetics under different ambient temperatures.

In order to solve the above problems, this inhalation anesthesia evaporation filtering device includes: a filter housing, a ventilator connection end arranged on one side of the housing, and a subject inhalation end arranged on the other side of the housing, the housing The inner cavity of the inner cavity is provided with a filtering device, and also includes: a drug storage container communicated with the filter housing, and an evaporation component and a temperature control component are arranged in the drug storage container, and the temperature control component can control the temperature of the drug storage container through the evaporation component. The anesthetic is heated, and the anesthetic in the drug storage container flows into the filter housing after being heated and evaporated.

Preferably, the temperature control component includes: a controller, a temperature sensor and a heating resistor, the temperature sensor and the heating resistor are respectively fixed on the evaporation component, and the controller controls the heating value of the heating resistor according to the temperature value transmitted by the temperature sensor , so as to control the evaporation rate of the evaporation component.

Preferably, the evaporation component is an evaporation rod made of porous ceramics, cotton or PTC thermistor ceramics; the filter device is made of activated carbon fibers.

Preferably, a bacterial filter layer is provided on the filter device, and the bacterial filter layer faces the connecting end of the ventilator.

Preferably, the medicine storage container is fixed at the bottom of the filter housing; the medicine outlet of the medicine storage container is arranged between the filter device and the inhalation end of the subject.

Preferably, the medicine storage container is detachably connected to the bottom of the filter housing through a hose, buckle or thread; the medicine outlet of the medicine storage container is arranged between the filter device and the inhalation end of the subject.

Preferably, a partition is provided in the drug storage container, and the partition separates the anesthetic from the temperature control component, and the evaporation component penetrates both sides of the partition.

Preferably, the inhalation end of the subject is provided with a gas sampling port for connecting with a gas sampling device.

The beneficial effects of the present invention are: the portable inhalation anesthesia evaporation filtering device has the characteristics of portability, simplicity and reliability. Compared with existing foreign products, this product has added a temperature control device, which can adapt to various temperature changes and has wider adaptability; its anesthetic gas concentration is well controllable, and the anesthesia effect is controllable; the design structure is divided into One-piece and split-type, available for different conditions; the cost is lower than that of domestic and foreign products.

Description of drawings

Fig. 1 is a schematic structural diagram of an inhalation anesthesia evaporation filter device, wherein the filter housing is detachably connected to the drug storage container;

Fig. 2 is another structural schematic diagram of an inhalation anesthesia evaporation filtering device, wherein the filter housing and the drug storage container adopt an integrated structure.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 , an inhalation anesthesia evaporative filtration device includes: a filter housing 1 , the outer shape of which is preferably circular or oval. The ventilator connecting end 11 provided on one side of the housing is used for connecting with the ventilator. And the subject inhalation end 12 arranged on the other side of the housing is connected to the user's mouth through a catheter. The inner cavity of the housing is provided with a filter device 13, which can be made of activated carbon fibers. The use of activated carbon fibers can allow air to pass freely, but because it can absorb anesthetics, it has a one-way effect on anesthetics, which can prevent anesthetics from entering the atmosphere from the exhalation end, thereby avoiding air pollution. This improvement just makes up for it. Defects of current domestic related devices. The filter device is also connected to the drug storage container 2 of the filter housing 1. The drug storage container is provided with an evaporating component 21 and a temperature control component 22. The temperature control component controls the evaporating component 21 to generate heat through a heating device, so that the storage The anesthetic in the drug container 2 is heated, and the anesthetic in the drug storage container 2 flows into the filter housing 1 after being heated and evaporated.

Preferably, the temperature control component 22 includes: a controller 23, a temperature sensor 24, a heating resistor 25 and a power drive circuit 26, the temperature sensor 24 and the heating resistor 25 are respectively fixed on the evaporation component 21, and the controller signal output terminal The power control circuit is electrically connected to the heating resistor, and the temperature sensor is electrically connected to the signal input terminal of the controller. The controller controls the heating value of the heating resistor 25 according to the temperature value transmitted by the temperature sensor, thereby controlling the evaporation rate of the evaporation component 21 .

The evaporating part 21 is an evaporating rod, which can be made of porous ceramics, cotton or PTC thermistor ceramics, and has the advantages of constant temperature heating, long natural life, energy saving, and good safety performance. In addition, a bacterial filter layer 14 is provided on the filter device 13 . The bacterial filter layer faces the ventilator connection end 11 , that is, is located between the filter device and the ventilator connection end, and is used to form a first filter layer for filtering bacteria.

The drug storage container 2 and the bottom of the filter housing 1 can be connected in a detachable manner, for example, through a flexible hose or buckle or screw connection. The medicine outlet of the medicine storage container 2 is arranged between the filter device 13 and the inhalation end 12 of the subject. In this way, the medicine storage container is convenient to replace and can be reused.

As shown in Figure 2, the drug storage container 2 can also be directly fixed on the bottom of the filter housing 1, and the drug outlet of the drug storage container 2 is arranged between the filter device 13 and the inhalation end 12 of the subject , the structure is simple and reliable, the volatilization rate of the drug is fast, and it is easy to carry, especially suitable for application in field hospitals.

As shown in Figure 1, the drug storage container 2 is provided with an interlayer 27, which separates the anesthetic drug from the temperature control part 22 to prevent the anesthetic drug from contacting the heating part, and the evaporation part 21 runs through the Compartment sides.

In addition, the subject's inhalation port 12 is provided with a gas sampling port 1a, which is used to connect with a gas sampling device, so that the gas concentration can be monitored at any time.

The portable inhalation anesthesia evaporation filtering device has the characteristics of portability, simplicity and reliability. Compared with the existing foreign products, this product adds a temperature control device, which can adapt to various temperature changes and has wider adaptability; the anesthetic gas concentration is well controllable, and the anesthesia effect is controllable; the design structure is integrated Type and split type, which can be selected under different conditions; the cost is lower than that of domestic and foreign products.

The device is supplemented with intravenous anesthetics or peripheral nerve block technology, which can meet the surgical anesthesia needs of various field trauma surgery patients. Moreover, it is easy to use and has perfect functions, and can also be used for sedation of patients in primary hospitals or ICUs.

It should be noted that the specific embodiment is only an explanation and description of the technical solution of the present invention, and should not be interpreted as a limitation on the technical solution of the present invention. Any use of the technical solution of the present invention with only partial changes shall still fall within within the protection scope of the present invention.

Claims (5)

1. a kind of suction-type anaesthetic vaporizer defecator, including：Filter housings (1), the respirator company for being arranged on housing side Connect end (11), be arranged on the experimenter suction side (12) of housing opposite side, the inner chamber of the housing is provided with defecator (13), which is special Levy is also to include：The drug reservoir (2) connected with filter housings (1), be provided with the drug reservoir evaporation component (21) and Temperature control unit (22), the temperature control unit can enter to the anesthetics in drug reservoir (2) via evaporation component (21) Row heating, the anesthetics in drug reservoir (2) are heated and are flowed into after evaporating in filter housings (1)；

The temperature control unit (22) includes：Controller (23), temperature sensor (24) and adding thermal resistance (25), temperature sensing Device (24) and adding thermal resistance (25) are installed in the evaporation component (21) upper end respectively, and controller is transmitted according to temperature sensor Temperature value, control adding thermal resistance (25) caloric value, so as to control the evaporation rate of evaporation component (21)；

The evaporation component (21) to evaporate rod, be made up of porous ceramicss, linen-cotton or PTC thermistor ceramics by the evaporation rod；Institute State defecator (13) to be made up of NACF；

Interlayer (27) is provided with the drug reservoir (2), anesthetics are separated by the interlayer with temperature control unit (22), described Evaporation component (21) is through the interlayer both sides.

2. suction-type anaesthetic vaporizer defecator according to claim 1, it is characterised in that：On the defecator (13) Bacteriological filter layer (14) is provided with, the bacteriological filter layer (14) is towards the respirator connection end (11).

3. suction-type anaesthetic vaporizer defecator according to claim 2, it is characterised in that：The drug reservoir (2) is solid It is located at the bottom of filter housings (1)；The medicine outlet of drug reservoir (2) is arranged on the defecator (13) and is sucked with experimenter Between end (12).

4. suction-type anaesthetic vaporizer defecator according to claim 3, it is characterised in that：The drug reservoir (2) is led to Cross the detachable connection of flexible pipe, buckle or screw thread and filter housings (1) bottom；The medicine outlet of drug reservoir (2) is arranged on Between the defecator (13) and experimenter suction side (12).

5. suction-type anaesthetic vaporizer defecator according to claim 4, it is characterised in that：The experimenter suction side (12) gas sampling mouth (1a) is provided with, for being connected with gas sampling device.