CN2183777Y

CN2183777Y - Artificial respirator

Info

Publication number: CN2183777Y
Application number: CN 94225667
Authority: CN
Inventors: 徐承礼
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-21
Filing date: 1994-01-21
Publication date: 1994-11-30
Anticipated expiration: 2004-01-21

Abstract

The utility model relates to an artificial respirator. The utility model is in a rhombus shape, and has a three-layer wall, wherein, the bottom of the inner layer is the flat bottom which is provided with a bracket; the inner layer and the middle layer are circled into an air passage; an oxygen inlet and a bacterial filter are arranged at the lower part of the air passage, and a carbon dioxide outlet is arranged at the upper part of the air passage; a blood passage is arranged outside the inner layer arranged on the upper part; an arterial blood inlet and a blood current divider are arranged at the top end; a blood passage is arranged inside the middle layer arranged at the lower part, and a blood outlet and a blood pump are arranged on the bottom; the middle layer and the outer layer are circled into a water heating heat insulating layer, a hot water inlet is arranged at the lower part, and a hot water outlet is arranged at the upper part. The utility model has the advantages of reasonable design, simple structure and low manufacture cost. The utility model can replace part functions of a lung, and is ideal equipment for II type respiratory failure treatment.

Description

Artificial respirator

This utility model belongs to technical field of medical instruments, relates to a kind of artificial lung instrument that is used for the treatment of respiratory failure type (hypercapnia, hypoxemia).

At present, the treatment respiratory failure type is subjected to the constraint of traditional mechanical ventilation, generally all is the method that adopts mechanical ventilation.This conventional mechanical ventilation method, bigger to the influence of patient's cardio-pulmonary function, the infection rate height, therefore mortality rate is higher.Especially be not a kind of ideal treatment means to the chronic obstructive pulmonary disease patient, to post-traumatic acute respiratory failure, the probability that increases the weight of injury of lung is bigger.For overcoming above-mentioned drawback, once there was human low frequency positive airway pressure to cooperate the method for using the external discharge carbon dioxide of membrane type lung abroad, treatment chronic obstructive pulmonary disease respiratory failure type has been obtained success.But, membrane type lung technological requirement height, processing and manufacturing difficulty is big, and price is comparatively expensive, is not easy to apply universal.

Task of the present utility model provide a kind of simple in structure, make easily, production cost is low, the non-membrane artificial lungs instrument being convenient to promote the wider application, treats respiratory failure type effectively, to overcome the above-mentioned shortcoming of existing in prior technology.

The technical solution of the utility model is, its outward appearance assumes diamond in shape, and its wall is divided into three layers, snaps together just as each three funnel up and down, and the internal layer bottom is flat, and is provided with carriage; The zone that internal layer and middle level surround is a gas circuit, and oxygen intake and bacterial filter are arranged at the bottom, and the carbon dioxide outlet is arranged at top; The outside of its first half, internal layer is a bloody path, and there are arterial blood inlet and a funnel shaped blood shunt device in the top, the latter half, and the inboard in middle level is a bloody path, there are a blood outlet and a blood pump in the lower end; Middle level and skin surround the hot-water heating heat-insulation layer, and the hot water inlet is arranged at the bottom, and hot water outlet is arranged at top.

Fig. 1 is that master of the present utility model looks cutaway view.

Fig. 2 is a vertical view of the present utility model.

Below in conjunction with accompanying drawing this utility model is elaborated:

According to Fig. 1, shown in Figure 2, outward appearance of the present utility model assumes diamond in shape, and its wall can be divided into three layers, snaps together just as each three funnel up and down, and the bottom of internal layer 4 is flat, and is provided with carriage 3, with its holding on middle level 5; The zone that internal layer 4 and middle level 5 surround is as gas circuit, and the bottom is provided with an oxygen intake 12 and a bacterial filter 11, and for aseptic oxygen, top is provided with carbon dioxide outlet 7 to instrument, and row's carbon dioxide is shown in dotted arrow; In the first half, the outside of internal layer 4 is a bloody path, and there are 9 and funnel shaped blood shunt devices 8 of arterial blood inlet on the top, the latter half, and the inboard in middle level 5 is a bloody path, there are blood outlet 13 and blood pump 1 in the lower end.Arterial blood inlet 9 can be connected with arteries, is power with the arterial pressure, to the instrument blood supply, and under diverter 8 and the effect that heavily is, is distributed in the outside of internal layer 4 and the inboard in middle level 5, along domatic downward trickling, shown in the solid line arrow.The downward arterial blood of trickling, oxygen concentration is low, and the gas concentration lwevel height fully contacts with from bottom to top oxygen, and forms tangible difference of partial pressure, and vim and vigour exchange is fully carried out in the two phase counterdiffusion.The blood flow of high concentration oxygen, low concentration of carbon dioxide of finishing vim and vigour exchanges is to the blood outlet 13 of lower end, and blood outlet 13 can be connected with vein blood vessel, can carry to vein blood vessel by blood pump 1.Carbon dioxide that diffuses out in the vim and vigour exchange process and surplus oxygen are discharged from the carbon dioxide outlet 7 on top together, thereby finish a whole respiratory.During respiratory failure type, replace part lungs function in treatment, alleviate disease lung burden, for the treatment patient be full of the sufficient time.

During use, using method and preparation and artificial kidney broadly similar note in addition:

(1) is communicated with arteries when arterial blood inlet 9, after blood supply begins, makes blood be distributed in the bloody path surface appropriate rotation the about the lung instrument;

(2) according to the store up situation of blood in lung instrument bottom, adjust the rotating speed of blood pump 1, anti-hemostasis face exceeds oxygen intake 12;

(3) courage and uprightness monitoring that carries out with good conditionsi prevents hyperventilation, and alkalosis takes place;

(4) be to improve partial pressure of oxygen rapidly, can cooperate simultaneously with the low frequency ventilation, with reinforced effects.To acute respiratory failure type, can add a blood pump again at the arterial blood inlet, blood flow increasing also can respectively add a tee T at arterial blood inlet and blood outlet, and two lung instrument also connect, and work simultaneously, improve the vim and vigour exchange efficiency.

This utility model is reasonable in design, and is simple in structure, and vim and vigour are incorgruous, no barrier film barrier, and the vim and vigour exchange velocity is fast, and the efficient height is manufactured easyly, and cost is low, is convenient to promote the wider application.

Claims

A kind of artificial lung instrument is characterized in that its outward appearance assumes diamond in shape, and its wall is divided into three layers, snaps together just as each three funnel up and down, and internal layer (4) bottom is flat, and is provided with carriage (3); The zone that internal layer 4 and middle level (5) surround is a gas circuit, and oxygen intake (12) and bacterial filter (11) are arranged at the bottom, and carbon dioxide outlet (7) is arranged at top; Its first half, the outside of internal layer (4) is a bloody path, there are arterial blood inlet (9) and an infundibulate blood shunt device (8) in the top, the latter half, the inboard of middle level (5) is a bloody path, there are blood outlet (13) and blood pump (1) in the lower end; The zone that middle level (5) and outer (6) surround is the hot-water heating heat-insulation layer, and hot water inlet (2) is arranged at the bottom, and hot water outlet (10) is arranged at top.