JPH0415231Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a vaginal opening dilation device used for obstetrics and gynecology examinations. This invention relates to a disposable vaginal opening dilator.

(Prior art) Generally, vaginal orifice expansion devices used for obstetrics and gynecological examinations are made of chrome-plated metal, and a threaded rod is interposed between the handles of the upper and lower lip pieces, and the device is inserted into the vaginal orifice after insertion. ,
The lower lip piece was held at an arbitrary opening position by operating a nut screwed onto the threaded rod to maintain the movement of the handle of the upper lip piece. The device had a structure in which the nut was returned to the top and the lower lip piece was closed when it was extracted after the medical examination.

(Problems to be solved by the invention) The conventional vaginal opening dilation device described above has the advantage of being made of metal and being durable, but it requires the effort and effort of sterilizing and disinfecting it for each medical examination. It takes a long time, it is necessary to have a large number of them on hand at all times in order to treat patients, and the unit cost is expensive, which increases the cost of medical equipment equipment. There are problems such as the number of times it can be used is limited because it peels off and corrosion occurs in this part, it feels heavy, and it is troublesome to hold and close the upper and lower lip pieces by operating nuts. It was hot. Therefore, this idea is
In order to eliminate the drawbacks of the conventional method, it can be mass-produced and provided at low cost, and the opening of the upper and lower lip pieces can be automatically maintained in conjunction with the operation of grasping the handle.
Another object of the present invention is to provide an inexpensive disposable vaginal orifice expansion device made of a synthetic resin molded body that can close the upper and lower lip pieces with a single touch.

(Means for Solving the Problems) In order to achieve the above object, the configuration of the present invention will be explained using FIGS. 1 to 5 corresponding to the embodiment. Lower lip piece A with
and an upper lip piece B that integrally has a handle 2,
Holding the upper and lower lip pieces A and B at any opening position at the opening/closing fulcrum 3 connecting the pair of upper and lower lip pieces A and B;
It is a synthetic resin molded body provided with holding and opening means C for closing the lower lip piece A.

(Operation) The present invention uses the above-mentioned means to provide a pair of
From the state shown in Figure 1 with lower lip pieces A and B closed, handle 1,
2, open and close the upper and lower lip pieces A and B at the fulcrum 3.
1. An arbitrary open state is maintained in conjunction with the opening operation centering on the lips, and the upper and lower lip pieces A and B are returned to the original open state by the action of releasing the holding of the open position. By discarding it after each use, it is possible to improve the efficiency of the examination.

(Example) An example of the present invention will be described below with reference to the drawings. A is an upper lip piece that integrally has a handle 1, B is a lower lip piece that integrally has a handle 2, and both are made of synthetic resin molded bodies. has been done. The pair of upper and lower lip pieces A and B are opened and closed around a fulcrum 3 that connects both ends of the base of the lower lip piece B to the upper lip piece A.

A receiving portion 4 having an internal gear 5 is provided on one side of the connecting fulcrum 3 of the upper lip piece A. A small shaft 7 having an external gear 6 that meshes with the internal gear 5 is loosely fitted in the receiving portion. The head of the small shaft 7 protrudes from the surface of the receiving portion. The fulcrum 3 on the other side connects the upper lip piece A and the lower lip piece B with a headed pin 8.

Next, the opening motion of the upper and lower lip pieces A and B during a medical examination will be explained. By grasping the handles 1 and 2 and pressing the handle 1 of the upper lip piece A toward the handle 2 of the lower lip piece, the internal gear 5 provided in the receiving part 4 of the upper lip piece A is rotated clockwise in FIG. The external gear 6 of the small shaft 7, which is integrally provided on the lower lip piece B that engages with the internal gear, rotates counterclockwise, and the upper and lower lip pieces A and B follow the chain line in FIG. The opening is centered around the fulcrum 3 as shown in . This open state can be maintained at any position by releasing the pressure on the handle 2, which engages the inner and outer gears 5 and 6.
Lower lip pieces A and B never close.

The closing operation of the upper and lower lip pieces A and B after the end of the examination is performed by pressing the head of the small shaft 7 and disengaging the external gear 6 and internal gear 5. By pressing, the lower lip piece B is plastically deformed as shown by the chain line in FIG. 4, and this can be done easily. After the external gear 6 and internal gear 5 are separated, this can be done by lightly pulling the handle 1 of the upper lip piece A toward you.

In this embodiment, a structure is described in which the opening position holding and opening means are provided on one side of the opening/closing fulcrum 3 of the upper and lower lip pieces A and B, but the holding and opening means may be provided on both sides.

Further, although the case where the internal gear 5 and the external gear 6 are provided all around the circumference has been described, they may be provided within the maximum opening range of the lower lip pieces A and B as appropriate.

Furthermore, although internal and external gears have been described as the means for holding and opening the opening positions of the upper and lower lip pieces, the internal gear 5 may be replaced by an internal ratchet wheel 9 as shown in FIG. The structure may be such that instead of the external gear 6 of the small shaft 7, one pawl 10 that engages with the internal ratchet wheel is provided. In this case, only the upper lip piece will open and close.

By providing the external gear 6 and pawl 10 as close to the small shaft 7 as possible, the meshing and disengaging operations with the internal gear 5 and internal ratchet wheel 9 can be performed smoothly.

(Effects of the invention) As mentioned above, the invention is made of a synthetic resin molded body.
The lower lip piece is configured to open and close with a single touch, and its structure is simpler than conventional metal ones. It can be mass-produced by plastic molding, is lightweight in use, and can be sterilized like a disposable injection device.
Since the product is sterilized and packed into individual bags, it is easy to handle and can be provided at a low price.
It has the effect of being a disposable vaginal opening dilation device.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a front view, FIG. 3 is an enlarged side view of the main part, and FIG. 4 is a partially cutaway front view. FIG. 5 shows an explanatory diagram of the main parts of another embodiment. A... upper lip piece, B... lower lip piece, C... is retained,
means of opening.

Claims (1)

[Scope of utility model registration request] A lower lip piece A that integrally has a handle 1 and an upper lip piece B that integrally has a handle 2 are connected at the base of the vaginal opening dilator, and the upper and lower lips A, B are attached to both ends of the base of the upper lip piece A. On one side of the connection fulcrum 3 on both sides, which controls the opening and closing of the
A receiving part 4 having an internal gear 5 is provided, and has an external gear 6 meshing with the internal gear in the receiving part, and a small shaft 7 whose head protrudes from the surface of the receiving part 4 is accommodated. A vaginal orifice dilator formed by connecting side connection fulcrums 3 with headed pins 8.