Hysteroscope and sheath body structure

Abstract

The invention discloses a hysteroscope and a sheath body structure. The hysteroscope comprises the sheath body structure and a hysteroscope main body, wherein the sheath body structure comprises an outer sheath, an inner sheath, an inner sheath, an inner sheath and a sheath body; the inner sheath is arranged in the outer sheath, wherein a backflow gap is formed between the inner sheath and the outer sheath, and the far end of the inner sheath extends to the outer side of the far end of the outer sheath; and the far end of the outer sheath and the inner sheath are in transition through an arc-shaped transition structure, and a backflow hole is formed in the position, corresponding to the backflow gap, of the far end of the outer sheath. According to the invention, the far-end outer sheath and the far-end inner sheath of the sheath body structure of the hysteroscope are connected through the arc-shaped transition structure, so that the far end of the sheath body structure is provided with the arc-shaped transition structure, and damage to the uterine cavity in the process of stretching into the uterine cavity can be avoided.

Description

technical field [0001] The invention relates to the field of uterine cavity medicine, and further relates to a hysteroscope and a sheath structure. Background technique [0002] Hysteroscopy is a surgical instrument used in gynecology. For all uterine space-occupying lesions, endometrial biopsy, adhesion release, and mediastinal uterus, hysteroscopy can be used for direct surgical treatment. At present, the surgical instruments used with hysteroscopy include electric cutting knife instruments, cold knife instruments, and planer knife systems. [0003] In the mirror body structure with instrument channels of the existing hysteroscope, the conventional straight outer sheath has the following defects: first, the outer sheath has sharp edges, and a sharp cutting damage is formed on the uterine cavity during the process of entering and leaving the uterine cavity, resulting in Complications such as cervical atresia; second, there is often a gap between the traditional circular ou...

AI Technical Summary

Problems solved by technology

[0003] In the mirror body structure with instrument channels of the existing hysteroscope, the conventional straight outer sheath has the following defects: first, the outer sheath has sharp edges, and a sharp cutting damage is formed on the uterine cavity during the process of entering and leaving the uterine cavity, resulting in Complications such as cervical atresia; second, there is often a gap between the traditional circular outer sheath and the elliptical mirror body structure, which causes the perfusate flowing out of the instrument channel to form a short-circuit backflow through the above gap, and cannot effectively form an effective circulation in the uterine cavity

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