FR2789292A1 - Gynaecological instrument for introduction of catheter into uterine canal has rigid tube with flexible distal catheter and transparent contact tube - Google Patents

Abstract

The catheter introduction instrument has a rigid tube (2) with a flexible distal catheter (1) extending from it. A contact tube (5) has a distal stop (7) to engage on the external wall of the uterus of the patient. The rigid tube is movable with respect to the contact tube, which can be transparent.

Description

GYNECOLOGICAL INSTRUMENT FOR INTRODUCTION

  OF A CATHETER IN THE UTERINE CAVITY

  The invention relates to the field of gynecology, and more particularly to the field of instruments for the insertion of a catheter into the uterine cavity. Such devices are used for functional exploration, for injection or sampling for medical use. An example of a catheter is

  described in European patent EP0538786.

  The purpose of the present invention is to provide a device that is less traumatic and easier to

  introduce only the prior art catheter.

  To this end, the invention relates in its most general sense to a gynecological instrument for the introduction of a catheter into the uterine cavity, characterized in that it comprises a rigid tube, extended by a flexible distal catheter, and an element tubular support having a distal stop for support on the external wall of the patient's uterus, the rigid tube

  being movable relative to the tubular support element.

  Advantageously, the tubular support element

is rigid.

  Preferably, the tubular support element is transparent. According to an advantageous embodiment, the flexible tube can be extended by a projection in

  olive shape at its distal end.

  Likewise, the distal end may be preformed

in the shape of a curve.

  According to an alternative embodiment, the catheter

  flexible is molded into the rigid tube.

  The invention will be better understood on reading

  the following description, referring to the attached drawings

  or: - Figure 1 shows a sectional view of an embodiment of the invention; Figure 2 shows a sectional view of a

  exemplary embodiment according to the invention in use.

  The attached figures show an example

  non-limiting of an instrument according to the invention.

  It consists of a flexible catheter (1)

  extended at its proximal end by a rigid tube (2).

  This rigid tube (2) is mounted on a connector (3).

  The distal end (4) of the flexible catheter has a semispherical shape. Advantageously, it is extended by an olive-shaped outgrowth and it can be

  also preformed in the shape of a curve.

  The rigid tube (2) is slidably mounted on a support element (5) having a tubular section (6) extended at its distal end by a stop (7) of disc shape. The proximal end of the support element (5) also has an annular stop (8) pierced by a central orifice allowing the

  sliding with gentle friction of the tube (2).

  The support element (5) is made of a rigid or semi-rigid transparent material so as to allow control of the penetration level of the tube (2)

  advantageously bearing markers on its surface.

  The use of the instrument is as follows.

  The assembly formed by the support element (5) and the tube (2) is rigid. The two elements slide with a gentle friction. The flexible catheter (1) can enter the cavity without bending. When pressure is applied to the connector (3), the tube (2) moves relative to the support element (5) and the catheter enters the cavity, where it is guided by the cavity itself, whatever its conformation, by following the sinuosities of

the organ.

  The support element (5) has a length of a few centimeters. It allows the practitioner to position the instrument correctly by penetrating the end of the flexible catheter into the uterine cavity, then to exert a controlled pressure on the connector while maintaining the support element (5) according to the optimal orientation. The efforts are thus well controlled, and

  using the instrument is less traumatic.

  The introduction of the catheter is thus facilitated because the instrument prevents the flexible catheter from bending at the time of introduction. The invention is described in the foregoing by way of nonlimiting example. It is obvious that those skilled in the art will be able to produce different variants

  without departing from the scope of the invention.

Claims (5)

  1 - Gynecological instrument for the introduction of a catheter into the uterine cavity characterized in that it comprises a rigid tube (2), extended by a flexible distal catheter (1), and a tubular support element (5) having a distal stop (7) for pressing on the external wall of the patient's uterus, the rigid tube (2) being movable relative to the element tubular support.   2 - Gynecological instrument for the introduction of a catheter (1) into the uterine cavity according to claim 1 characterized in that the element tubular support (5) is rigid.   3 - Gynecological instrument for the introduction of a catheter (1) into the uterine cavity according to claim 1 characterized in that the element   tubular support (5) is transparent.   4 - Gynecological instrument for the introduction of a catheter (1) into the uterine cavity according to claim 1 characterized in that the flexible tube is extended by an olive-shaped protuberance whose distal end is of non-traumatic form ,   it can also be preformed in the form of a curve.   5 - Gynecological instrument for the introduction of a catheter (1) into the uterine cavity according to claim 1 characterized in that the catheter   (1) flexible is molded into the rigid tube (2).