CN113521478A

CN113521478A - Pressure stabilizing device of anesthetic vaporizer

Info

Publication number: CN113521478A
Application number: CN202110861684.4A
Authority: CN
Inventors: 胡红萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-10-22

Abstract

The invention relates to the technical field of medical equipment and discloses a pressure stabilizing device of an anesthetic vaporizer, which comprises a liquid cavity and an evaporation cavity, wherein the top of the liquid cavity is communicated with a buffer cavity and an air pumping cavity, an air wheel is arranged in the buffer cavity and communicated with an air inlet, and the air inlet is divided into two paths. This anesthesia evaporimeter pressure stabilizer, the ratio proportion of fresh gas and carrier gas is decided uniquely by the stroke of suction jar, do not change along with pressure variation, when not considering saturated vapor pressure's change, the ratio proportion of anesthesia keeps invariable, do benefit to doctor's operation more, the unexpected probability also reduces by a wide margin when using simultaneously, secondly, when extraction evaporation chamber steam, concentrate the extraction through relatively independent branch cavity, can reduce the pressure of local position, the evaporation rate of acceleration local position, and then increase holistic evaporation rate, and air current stirring liquid and stirring thick liquid wind are respectively to the stirring of liquid surface and the evaporation of liquid also accelerates.

Description

Pressure stabilizing device of anesthetic vaporizer

Technical Field

The invention relates to the technical field of medical equipment, in particular to a pressure stabilizing device of an anesthetic vaporizer.

Background

Referring to fig. 5, one part of gas introduced into the anesthetic vaporizer during operation is two, one part of gas enters the vaporizer as a carrier gas flow and carries away saturated anesthetic vapor to an outlet, the other part of gas directly reaches the outlet from a bypass as a dilution flow, the two parts of gas are mixed at the outlet of the vaporizer to obtain an anesthetic gas flow with a target concentration, and the quality (i.e., the accurate value of the concentration) of the anesthetic gas flow is determined by the stability of the saturated vapor pressure of the vaporizing chamber and the matching accuracy of the carrier gas flow and the dilution flow.

The respiratory effect that anesthesia machine took place in the use and the fast ripe oxygenation in the operation can make evaporimeter delivery outlet low reaches pressure take place intermittent type and change, because the volume in bypass space and evaporimeter space is different, the pressure change is different to the influence degree that the air current flows in bypass and the evaporimeter, changes the ratio of carrier gas flow and dilution flow, and then influences the output concentration of anesthetic gas, makes the concentration of anesthetic gas output change thereupon, improved the degree of difficulty of mastering of anesthesiologist to the anesthesia effect, take place the phenomenon that anesthesia is not enough or the anesthesia is too dark easily.

Secondly, because the proportion is designed according to the concentration of the saturated vapor pressure at a specific temperature and a specific pressure, when the anesthetic dosage is too large, namely the flow rate is too fast, the saturated vapor pressure is pumped away when the evaporation is not reached in time, and the proportion concentration of the evaporator is low.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the pressure stabilizing device of the anesthetic vaporizer, which has the advantages of high adjusting precision, high vaporizing speed and the like and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides an anesthesia evaporimeter voltage regulator device, includes sap cavity and evaporation chamber, the top intercommunication in sap cavity has cushion chamber and chamber of bleeding, be equipped with the gas turbine in the cushion chamber, the gas turbine intercommunication has the air inlet, the air inlet divide into two the tunnel, communicate with the gas turbine all the way, another way and cushion chamber intercommunication, the pivot of gas turbine is connected with the eccentric disc, chamber and evaporation chamber intercommunication of bleeding, the chamber intercommunication of bleeding has the suction jar, the piston of suction jar passes through connecting rod and eccentric disc swing joint, the suction jar is connected with the adjustment piece, the adjustable single motion stroke of suction jar of adjustment piece, suction jar and gas turbine all communicate there is the hybrid chamber, the cushion chamber passes through intercommunication valve and evaporation chamber intercommunication.

Preferably, the evaporation cavity is provided with a partition, airflow stirring liquid and stirring paddle, the stirring paddle is immersed in the anesthetic liquid, the partition is arranged at the top of the evaporation cavity to divide the space in the evaporation cavity into relatively independent sub-cavities, and the airflow stirring liquid shifts the airflow upwards when rotating.

Preferably, the spacer is connected to the rotation shaft through a damping sleeve.

Preferably, the suction cylinder includes a cylinder body, one end of the cylinder body is provided with an air exhaust piston, a bendable elastic rod is arranged between the air exhaust piston and the connecting rod, the other end of the cylinder body is provided with a limit piston, the limit piston is connected with an adjusting piece, the adjusting piece is in threaded connection with the outer wall of the air exhaust cavity, and the limit piston is provided with a one-way valve.

Preferably, the inner cavity of the mixing cavity is in a circular truncated cone shape, the suction cylinder is communicated with one end with the larger diameter of the mixing cavity, the air wheel is communicated with the side face of the mixing cavity, and the air inlet direction of the air wheel is tangent to the inner wall of the mixing cavity.

The invention has the following beneficial effects:

1. according to the pressure stabilizing device of the anesthetic evaporator, the ratio of fresh gas to carrier gas is uniquely determined by the stroke of the suction cylinder and does not change along with pressure change, when the change of saturated vapor pressure is not considered, the ratio of anesthesia is kept constant, the operation of a doctor is facilitated, and meanwhile, the probability of accidents in use is greatly reduced.

2. This anesthesia evaporimeter pressure stabilizer when extracting evaporation chamber steam, concentrates the extraction through relatively independent branch cavity, can reduce the pressure of local position, accelerates the evaporation rate of local position, and then increases holistic evaporation rate, and secondly, the gaseous evaporation also accelerates with higher speed is not stirred with stirring liquid and the stirring of liquid to the liquid surface to air current stirring liquid, guarantees that evaporation rate satisfies the needs of getting gas.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of a separator in the present invention;

FIG. 3 is a schematic view of the construction of the suction cylinder of the present invention;

FIG. 4 is a schematic structural view of a mixing chamber according to the present invention;

fig. 5 is a schematic structural view of a conventional evaporator.

In the figure: 1. a liquid chamber; 2. an evaporation chamber; 3. a separator; 4. stirring the liquid by airflow; 5. stirring the slurry; 6. an air inlet; 7. a gas turbine; 8. an eccentric disc; 9. a connecting rod; 10. a suction cylinder; 101. a cylinder body; 102. a limit piston; 103. a one-way valve; 104. an air extraction piston; 11. a mixing chamber; 12. a buffer chamber; 13. an air pumping cavity; 14. a communication valve; 15. an adjustment member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an anesthetic vaporizer pressure stabilizing device comprises a liquid chamber 1 and an evaporation chamber 2, the liquid chamber 1 contains anesthetic, anesthetic vapor is in the evaporation chamber 2, the top of the liquid chamber 1 is communicated with a buffer chamber 12 and an air pumping chamber 13, an air wheel 7 is in the buffer chamber 12, the air wheel 7 is communicated with an air inlet 6, the air inlet 6 is divided into two paths, one path is communicated with the air wheel 7, the other path is communicated with the buffer chamber 12, the air flowing in from the air inlet 6 drives the air wheel 7 to rotate, a rotating shaft of the air wheel 7 is connected with an eccentric disc 8, the air pumping chamber 13 is communicated with the evaporation chamber 2, the air pumping chamber 13 is communicated with a suction cylinder 10, a piston of the suction cylinder 10 is movably connected with the eccentric disc 8 through a connecting rod 9, the eccentric disc 8 rotates to drive the connecting rod 9 to move, thereby realizing the drawing of the suction cylinder 10, the suction cylinder 10 is connected with an adjusting piece 15, the adjusting piece 15 can adjust the single movement stroke of the suction cylinder 10, the number of the rotation of the air wheel 7 is positively correlated with the flow rate, the gas wheel 7 drives the suction cylinder 10 to move for a stroke every turn, the suction cylinder 10 and the gas wheel 7 are both communicated with a mixing cavity 11, gas in the gas wheel 7 and the suction cylinder 10 is collected in the mixing cavity 11, the final proportioning proportion is only related to the stroke of the suction cylinder 10, proportioning precision is guaranteed, the buffer cavity 12 is communicated with the evaporation cavity 2 through a communication valve 14, and gas in the buffer cavity 12 supplements the pressure in the evaporation cavity 2, so that the stability of the pressure in the evaporation cavity 2 is guaranteed.

Wherein, evaporation chamber 2 is equipped with separator 3, air current stirring liquid 4 and stirring thick liquid 5, stirring thick liquid 5 submerges in the anesthetic liquid, separator 3 locates evaporation chamber 2's top and will evaporate 2 inner spaces of chamber and divide into relatively independent branch cavity air current stirring liquid 4 and locate between separator 3 and the liquid level, air current stirring liquid 4 stirs the air current upwards when rotatory, the evaporation of anesthetic liquid is accelerated to stirring and air current, separator 3, the equal low-speed rotation of air current stirring liquid 4 and stirring thick liquid 5, the relative pressure that appointed steam relatively speaking can reduce here is extracted from dividing the cavity to the exhaust chamber 13, evaporation with higher speed.

Referring to fig. 2, the partition 3 is connected to the rotating shaft through the damping sleeve, and the partition 3, the airflow stirring liquid 4 and the stirring paddle 5 are connected to the same motor shaft, because the partition 3 slides and has a larger resistance surface, its rotating speed is much lower than that of the rotating shaft.

Referring to fig. 3, a suction cylinder 10 includes a cylinder body 101, an air extracting piston 104 is disposed at one end of the cylinder body 101, a flexible elastic rod is disposed between the air extracting piston 104 and the connecting rod 9, a limit piston 102 is disposed at the other end of the cylinder body 101, the limit piston 102 is connected to an adjusting member 15, the limit piston 102 is connected to the adjusting member 15 through a bearing or directly, the adjusting member 15 is connected to an outer wall of the air extracting cavity 13 through a thread, the position of the limit piston 102 is determined through the adjusting member 15, so as to limit a stroke of the air extracting piston 104, determine a gas amount extracted in a single stroke, determine a mixture ratio, and a check valve 103 is disposed on the limit piston 102.

Referring to fig. 4, the inner cavity of the mixing chamber 11 is in a truncated cone shape, the suction cylinder 10 is communicated with the end of the mixing chamber 11 with a larger diameter, the gas turbine 7 is communicated with the side surface of the mixing chamber 11, the air inlet direction of the gas turbine 7 is tangential to the inner wall of the mixing chamber 11, the gas flow of the gas turbine 7 is changed into rotational flow after entering, the residence time of the gas turbine 7 in the mixing chamber 11 is prolonged by the rotational flow due to the fact that the gas turbine 7 is continuous and the suction cylinder 10 is in a gap, and meanwhile, the rotational flow is beneficial to mixing.

Principle of operation

The gas enters from the gas inlet 6, one part of the gas enters the gas wheel 7, the other part of the gas enters the buffer cavity 12, a pressure reducing valve is arranged between the gas inlet 6 and the buffer cavity 12, the air pressure in the buffer cavity 12 is kept constant, the gas wheel 7 is driven to rotate by the gas flow in the gas wheel 7, then the eccentric disc 8 is driven to rotate, the eccentric disc 8 drives the suction cylinder 10 to make a complete piston stroke through the connecting rod 9, the suction cylinder 10 extracts the anesthetic steam in the evaporation cavity 2 through the gas extraction cavity 13, during the compression stroke, the steam is pressed into the mixing cavity 11 to be mixed with the gas flowing in the gas wheel 7, the pressure in the evaporation cavity 2 is reduced, the gas can be automatically supplemented through the relatively stable buffer cavity 12, and the evaporation of the anesthetic in the evaporation cavity can be accelerated by the rotation of the partition 3, the gas flow stirring liquid 4 and the stirring paddle 5.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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.

Claims

1. The utility model provides an anesthesia evaporimeter voltage regulator device, includes sap cavity (1) and evaporation chamber (2), its characterized in that: the top of the liquid cavity (1) is communicated with a buffer cavity (12) and an air pumping cavity (13), an air wheel (7) is arranged in the buffer cavity (12), the air wheel (7) is communicated with an air inlet (6), the air inlet (6) is divided into two paths, one path is communicated with the air wheel (7), the other path is communicated with the buffer cavity (12), the rotating shaft of the air wheel (7) is connected with an eccentric disc (8), the air pumping cavity (13) is communicated with the evaporation cavity (2), the air pumping cavity (13) is communicated with a suction cylinder (10), a piston of the suction cylinder (10) is movably connected with the eccentric disc (8) through a connecting rod (9), the suction cylinder (10) is connected with an adjusting piece (15), the adjusting piece (15) can adjust the single movement stroke of the suction cylinder (10), the suction cylinder (10) and the gas wheel (7) are both communicated with a mixing cavity (11), the buffer cavity (12) is communicated with the evaporation cavity (2) through a communication valve (14).

2. The anesthetic vaporizer pressure stabilizing device according to claim 1, wherein: the novel anesthesia liquid-vapor extractor is characterized in that the evaporation cavity (2) is provided with a partition (3), airflow stirring liquid (4) and stirring slurry (5), the stirring slurry (5) is immersed in anesthesia liquid, the partition (3) is arranged at the top of the evaporation cavity (2) to divide the space in the evaporation cavity (2) into relatively independent sub-cavities, and the airflow stirring liquid (4) is stirred upwards when rotating.

3. The anesthetic vaporizer pressure stabilizing device according to claim 1, wherein: the separator (3) is connected with the rotating shaft through a damping sleeve.

4. The anesthetic vaporizer pressure stabilizing device according to claim 1, wherein: the suction cylinder (10) comprises a cylinder body (101), an air suction piston (104) is arranged at one end of the cylinder body (101), a bendable elastic rod is arranged between the air suction piston (104) and the connecting rod (9), a limiting piston (102) is arranged at the other end of the cylinder body (101), the limiting piston (102) is connected with an adjusting piece (15), the adjusting piece (15) is in threaded connection with the outer wall of the air suction cavity (13), and a one-way valve (103) is arranged on the limiting piston (102).

5. The anesthetic vaporizer pressure stabilizing device according to claim 1, wherein: the inner cavity of the mixing cavity (11) is in a circular truncated cone shape, the suction cylinder (10) is communicated with one end of the mixing cavity (11) with a larger diameter, the air wheel (7) is communicated with the side surface of the mixing cavity (11), and the air inlet direction of the air wheel (7) is tangent to the inner wall of the mixing cavity (11).