Self-unlocking obstetric forceps for department of gynaecology and obstetrics

Abstract

The invention relates to the technical field of medical apparatuses, and provides self-unlocking obstetric forceps for department of gynaecology and obstetrics. The self-unlocking obstetric forceps comprise a clamping transmission assembly and a traction protection assembly, wherein the clamping transmission assembly is formed by the connection of a connecting rod structure and a power shaft; thetraction protection assembly consists of an outer ratchet wheel, an inner ratchet wheel and a spring ratchet; the clamping transmission assembly is connected with a clamping assembly to complete the work of far end control; and the traction protection assembly is connected with a grasping and holding assembly to form a traction force upper limit protection. According to the self-unlocking obstetric forceps disclosed by the invention, a simple and stable structure is adopted, so that on one side, far end control of the clamping motion is realized, and on the other side, an unhooking protectionmechanism of which the upper limit of the traction force can be preset is formed through the traction protection assembly, and after the unhooking mechanism is triggered, the clamping assembly is recovered to an initial opening angle.

Description

Technical field [0001] The invention belongs to the technical field of medical devices, and particularly relates to a self-unlocking obstetrics and gynecology forceps. Background technique [0002] When women give birth naturally, there are various risks. Usually, in order to solve the problems of head dystocia, shorten the second stage of labor, and terminate pregnancy as soon as possible, and achieve the purpose of mother and child safety, it is necessary to use midwifery equipment to assist women in giving birth. At present, the commonly used midwifery equipment includes fetal head aspirator and midwifery forceps. When the fetal head aspirator is used, negative pressure is used to draw the fetus’s head to assist the fetus to deliver the vagina, but negative pressure can also easily cause fetal scalp tear, scalp contusion and Maternal cervical laceration and vulvovaginal laceration can cause death of the fetus in severe cases; midwifery forceps use two blades that match the sha...

AI Technical Summary

Problems solved by technology

[0003] At present, midwifery forceps used in clinical practice require high operating experience of midwives. Excessive clamping force of the blades will cause damage to the fetal head and female vagina. , and even lead to further dystocia; there is also the problem of improper tension control when clamping and pulling. If the pulling force is too small, it is difficult to pull the fetal head to expose, prolonging the pregnancy time of the parturient, and if the pulling force is too large, there is a risk of straining the fetal skin and the parturient’s vagina. In severe cases, it may even cause fetal death; on the other hand, the blades of traditional midwifery forceps are all made of metal. This hard material makes midwives face greater problems in grip control

[0004] The invention patent with the application number CN201810356493.0 proposes a high-performance flexible forceps, including a first forceps handle, a second forceps handle and blades, wherein the first forceps handle and the second forceps handle are hinged, and both ends are connected with belts. The blade of the buffer layer, and the blade and the second clamp are flexibly connected through the hinge shaft, and the flexible connection is through the silicone layer and the spring so that the blade can be opened outward when the force exceeds the preset size, so as to avoid excessive clamping; this Through the simple mechanical structure, the design effectively avoids the damage to the fetus caused by excessive clamping force, but it does not involve the control of the traction force after clamping.

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