Tools and methods for vaginal access

A stepped dilator and cannula system with controlled dilation and a trocar needle mechanism address the challenges of laparoscopic access to the intraperitoneal space, ensuring safer, less invasive procedures with reduced trauma and complication risks.

JP7863361B2Active Publication Date: 2026-05-21MOMENTIS SURGICAL LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
MOMENTIS SURGICAL LTD
Filing Date
2024-11-26
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing methods for laparoscopic access to the intraperitoneal space, such as pelvicoscopy, face challenges in minimizing invasiveness and reducing trauma to the patient, particularly in accessing the rectouterine pouch, with risks of complications like rectal injury during incision and dilation.

Method used

A stepped dilator and cannula system is designed for transvaginal access, featuring tapered regions and separation zones to control dilation, allowing precise control of incision depth and minimizing tissue trauma, accompanied by a trocar needle system with a blunt tip and spring mechanism to prevent excessive penetration.

Benefits of technology

The system provides safer, less invasive access to the intraperitoneal space with reduced risk of complications, enabling efficient insertion of surgical tools and robotic arms while maintaining minimal scarring and patient trauma.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a dilator with stages, the dilator being used with a trocar kit for providing an abdominal cavity access through a recess of the body.SOLUTION: A trocar component is configured to provide access into an abdominal cavity through an intestinum rectum uterus cave, to a surgical tool, and in arbitrary selection, includes one or more surgical robot members. The surgical tool has a diameter of 5 mm or more in arbitrary selection. A cannula part has a lumen sized to provide simultaneous transvaginal access into the abdominal cavity through the intestinum rectum uterus cave to the multiple surgical tools, and has a discission which sized to receive a distal opening of the cannula, and uses in arbitrary selection, one or two dilators. The dilator is formed sized to form a long circular shaped opening, and the long circular shaped opening is configured so that, a width of a large diameter is at least twice of a width of a short diameter.SELECTED DRAWING: Figure 2A
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