CN2286619Y

CN2286619Y - Vacuum extractor for fetal head

Info

Publication number: CN2286619Y
Application number: CN 97205936
Authority: CN
Inventors: 徐正平; 于桂花; 刘学玲; 鲁春芝
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-29
Filing date: 1997-01-29
Publication date: 1998-07-29
Anticipated expiration: 2007-01-29

Abstract

The utility model relates to a vacuum extractor for fetal head, which belongs to medical equipment and can be applied to operation to assist delivery for obstetrics. The utility model is composed of a cylindrical cylinder [4] with a piston with an O-shaped sealing ring arranged in a handle, a one-way valve on the front end of the cylinder, which is connected with the rear end through a rubber washer [7], a coupling flange [6], wherein, the front end of which is a trumpet-shaped suction cup [1], an exhaust valve [3] on the front side of the cylinder and a release valve [2] on the periphery of the coupling flange. The utility model has the advantages of reasonable design, compact structure, convenient operation, capability of continuously pressurizing, capability of quickly depressurizing, wide purposes and safety.

Description

Vacuum extractor

This utility model belongs to medical apparatus and instruments, is applicable to obstetrics' operation to assist delivery especially.

The apparatus that the practise midwifery of natus all need produce negative pressure is in to attract, commonly used in the past have a 1. empty tube of cone-shaped metal, and an end is big, and an end is little, hold greatly to adhering to the fetal head end, it has two short handles and a quoit, is used for tractive, and a side of short handle is that hollow pipe communicates with suction pump and air ejector, 2. oblate metal cap, middle part broad general goal is porose to connect the logical pump bowl of rubber tube, but when all needing two people operation or negative pressure not enough, the excessive scalp easy damaged of easy slippage of suction pump or negative pressure.

What but the purpose of this utility model provided a kind of one man operation conveniently can be used for practise midwifery, also can be used for the suction pump that skin ulcer cup is clearly used.

A kind of vacuum extractor, it is characterized in that having a cylinder body cylindraceous [4], the piston [5] that the band O RunddichtringO of handle connection is arranged in the cylinder body, cylinder body front end side has air bleeding valve [3], the cylinder body front end connects the rear end by rubber washer [7] check valve, front end is the tie-plate [6] of horn-like sucker [1], and all sides of dish have gas bleeder valve [2].

When this device uses, the sucker limit of silica gel system is coated with lubricating oil, with the left hand food, the middle finger palmar struts posterior vaginal wall, and the right hand is held sucker elder generation transvaginal rear wall and sent into, make its trailing edge arrive at the fetus postparietal, in the left hand, palmar surface of index finger is outwards pushed the vagina right side wall aside then, makes the opening lateral margin slip into intravaginal, then finger is upwards mentioned anterior vaginal wall, and sucker is slipped into.With in the right hand, forefinger draws back the vagina left side wall at last, makes whole sucker slip into intravaginal and the fetus top is close to.Be adjusted into the occipitoanterior position by rotation, the pulling piston makes to produce negative pressure in the sucker, and fetal head is inhaled.Contract to cooperate with battle array and be used for practise midwifery.Be used for cup or clear skin ulcer, inhale pus, directly sucker is placed on the use face to get final product.Negative pressure is not enough, promotes piston forward once more, and one-way control valve is closed, the intrinsic pressure isolation of sucker, the air bleeding valve that is contained in the cylinder body outside begins aerofluxus, thereby makes piston be convenient to move back and forth, produce negative pressure,, can turn on and take off sucker after relief valve makes the interior inflation of sucker for taking off sucker and handling special circumstances.

The utility model has the advantages that reasonable in design, compact conformation, easy to operate, supercharging continuously, blood pressure lowering fast, of many uses, safe and reliable.

Accompanying drawing is the vacuum extractor structural representation, 1-sucker wherein, 2-relief valve, 3-air bleeding valve, 4-cylinder body, 5-piston, 6-tie-plate, 7-rubber blanket

During enforcement with making cylinder body after the steel pipe saw section.The tie-plate that is processed into horn-like sucker with silica gel or rubber and plastic injection moulding is added a cover in front end flange rear end, punching is equipped with gas bleeder valve on the connection web again, also the available metal tube is made tie-plate, is fixedly connected at front end with sucker behind the one-way control valve sheet that is equipped with gas bleeder valve and rear end on the dish.Connect cylinder body in the back at interval with rubber seal between the dish cylinder body, cylinder body is built-in with the piston of O type circle, handle can be spirally connected can add a cover after piston is inserted so again and connect with handle with bar, and difficult drop-off beats on the corresponding site of cylinder body and sucker that screw is equipped with screw and check valve sheet gets final product.

Claims

A kind of vacuum extractor, it is characterized in that the cylinder body cylindraceous [4] that the piston [5] of handle grip O RunddichtringO is housed by interior, the cylinder body front side edge has air bleeding valve [3], the cylinder body front end is by rubber washer [7], connect the rear end check valve is arranged, front end is the tie-plate [6] of horn-like sucker [1], and all sides of tie-plate have gas bleeder valve [2] to constitute.