JPH04847Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is a disposable device for inserting suppositories, especially for vaginal use, comprising an outer tube and a plunger slidably disposed within the outer tube. Regarding.

PRIOR ART A device of this type is described in British Patent No. 1333095. However, this device is not suitable for inserting relatively small amounts of suppositories, such as circular pellets. In addition, the known device has the following drawbacks: the plunger is not secured against natural retraction after inserting the suppository, which may cause the suppository to slide back into the cylindrical part of the device under unfavorable circumstances. If the device is then removed after use, it is removed together with the latter, for example from the vagina.

OBJECTS AND CONSTRUCTION OF THE INVENTION It is thus an object of the invention to improve the known device in order to eliminate the above-mentioned and other drawbacks. The device according to the invention is particularly intended and adapted for the insertion of relatively small amounts of suppositories, further ensuring reliable insertion. The instruments can be supplied to a particular patient as a prefabricated unit in the form of a ready-to-use sanitary pack and then stored in the sterile pack until actual use. After use, it can be disposed of without the need for cleaning for reuse.

The releasable engagement of the plunger in its starting position clearly ensures that the instrument is not inadvertently retracted and that the plunger is not prematurely ejected during normal transport and handling. The protrusion or position on the outer tube or plunger is also contemplated such that the plunger is retained after its forward movement to insert the suppository. According to a preferred embodiment, the protrusion or position of the plunger can be in the form of a protrusion, which covers the circumferential surface of the plunger. The protrusions of such shape are preferably located close to the front end of the plunger and furthermore, when the plunger is in its partially retracted position, they contact or engage the protrusion at the lower end of the outer tube. It is arranged so that

Preferred embodiments of the invention are described in the dependent claims of the utility model registration claims.

The present invention will be described in detail with respect to its aspects with reference to the following drawings.

FIG. 1 is a side view of the device according to the present invention.

FIG. 2 is another side view of the device according to the invention.

FIG. 3 is a longitudinal sectional view of the device according to FIG. 2;

4 is a longitudinal sectional view of the lower part of the device according to FIG. 3; FIG.

FIG. 5 is a longitudinal sectional view of the outer tube according to FIG. 1;

FIG. 6 is a side view of the plunger.

The outer tube 1 of the device is particularly suitable for inserting small amounts of suppositories and is tapered at one end, hereinafter referred to as the lower end (as shown in FIGS. 1 and 5). However, two lips are provided between which the suppository is inserted. The lips 3 each have an inwardly projecting portion 4 which is shaped, for example by molding, and whose shape corresponds to the circular shape of the suppository. The lip 3 also has a groove 8, which serves as a guide for the plunger 2 during telescopic movement within the outer tube 1.

Plunger 2 has a rectangular cross section. Near its lower end, it has two protrusions 6, 7, hereinafter referred to as flanges. Its lowermost end adjacent to the first flange 7 is rounded according to a portion 9 that fits into the groove 8 of the lip 3. The first flange 6 and the second flange 7 are annular, which surrounds the circumference of the plunger 2. The annular flanges 6, 7 are spaced apart in the direction of the centerline of the plunger, so that the flanges 6, 7
When the plunger 2 is in a partially retracted starting position with respect to the outer tube 1, it engages an inwardly projecting shoulder of the outer tube 1. The device is thus secured against involuntary retraction or premature ejection of the plunger 2 before use.

The outer tube 1 and the plunger 2 are preferably made of plastic, which allows the flange 6 to be pressurized behind the inwardly extending shoulder 5 when a certain pressure is applied to the plunger. Suitably flexible. As shown enlarged in FIG. 4, the inwardly extending shoulder 5 comprises a sloped wall of the outer tube 1, which has a smaller wall thickness in the upper part of the outer tube 1 and a larger wall thickness in the upper part of the outer tube 1. 1 between the lower ends. The end of the inclined wall presents a sharp edge-like rim 12, which constitutes the inner circumference (minimum inner diameter) of the outer tube 1. In the lower part of the plunger, the second flange 6 has a tapered shape corresponding to the conical shape of the inclined wall, which forms the upper part of the inwardly extending shoulder 5. Furthermore, flange 6
has a pointed upper part corresponding to the pointed rim 12 of the inwardly extending shoulder 5. Alternatively, the pointed rim 12 forms the lower part of the inwardly extending shoulder 5.

After the plunger 2 has moved outward to insert the suppository, the pointed upper part of the flange 6 engages the pointed lower part of the shoulder 5. The plunger 2 is held in the advanced position and the system is further prevented from inadvertently retracting the plunger after inserting the suppository. Such unconscious retraction of the plunger 2 has no effect on suppositories that are not inserted into the vagina. This is because it slides back to its initial position within the outer tube 1 and, following use of the device, is removed from the vagina when the device is retracted. The plunger is fixed in its advanced position, thus ensuring reliable insertion of the suppository.

Within its upper part there are at least two plungers.
It is provided with two protrusions 10 which serve as guides or bearings against the surface of the outer tube 1 when the plunger 2 moves outwardly within the outer tube 1. The plunger 2 is also equipped with a flange 11, which allows for manual manipulation of the device during insertion of the suppository. The device is supplied to the patient in a sanitary pack, and the suppository is placed between the lips 3 of the outer tube 1. The plunger 2 has flanges 6 and 7,
It is located in engagement with an inwardly extending shoulder 5 of the outer tube 1. The plunger 2 is thus fixed in its starting position, further ensuring that the suppository is not inadvertently injected from the device. This is because a constant force is required to press the second flange 6 on the inwardly extending shoulder 5.

During use, the device is inserted into the vagina and the plunger 2 is pressed forward. Since a constant force is required to press the second flange 6 on the inwardly extending shoulder 5, an impact energy is created during the movement of the second flange 6 on the inwardly extending shoulder 5, which causes the suppository to Effective discharge of the amount is ensured. This is because the suppository is placed deep enough in the vagina to ensure that the maximum area of action is reached.

In particular, the known device suffers from the following disadvantages. That is, it is difficult to confirm whether the suppository has actually been expelled while the device remains inside the vagina. This drawback is eliminated by the device according to the invention. That is, in the present invention, when the second flange 6 passes over the inwardly extending shoulder 5, a click is heard, so that the suppository is properly inserted into the patient.

Although the above description has been made regarding the use of the device according to the invention vaginally, the invention is also suitable for the insertion of rectal suppositories.

[Brief explanation of the drawing]

FIG. 1 is a side view of the device according to the present invention, FIG. 2 is another side view of the device according to the present invention, FIG. 3 is a longitudinal sectional view of the device according to FIG. 2, and FIG. FIG. 3 is a longitudinal sectional view of the lower part of the device, FIG. 5 is a longitudinal sectional view of the outer tube according to FIG. 1, and FIG. 6 is a side view of the plunger. 1... Outer tube, 2... Plunger, 3... Lips, 4... Projection, 5... Shoulder, 6, 7... Flange, 8... Groove, 9... Rounded part, 10... Projection , 11... flange, 12... rim.

Claims (1)

[Claims for Utility Model Registration] 1. A disposable device for inserting suppositories, especially for vaginal use, comprising an outer tube 1 and a plunger 10 slidably disposed within the outer tube, comprising: is provided with a first flange 7 and a second flange 6 in this order from the end of the plunger 10;
The two flanges are located at a predetermined distance from each other, and the outer tube 1 has at its lower end an inwardly extending shoulder 5 which allows the plunger 10 to pull the outer tube 1. Located between the second flange 6 and the first flange 7 at the lower end of the plunger when in the retracted start position, the plunger 2 is pressurized forward to insert a suppository. Sometimes, the second flange 6 is attached to the back of the inwardly extending shoulder 5.
The disposable device is engageable with the disposable device. 2 At the end of the outer tube, the outer tube has two lips 3
2. A device according to claim 1, wherein each lip has an inwardly projecting portion 4 for holding a suppository. 3 At the lower end of the plunger 2, the flanges 6 and 7
The device according to claim 1 or 2, which is assembled in the form of a ring surrounding the plunger 2. 4. At the lower end of said outer tube 1 a projecting shoulder 5 comprises an inclined wall section connecting parts of the outer tube 1 with different wall thicknesses, said inclined wall section surrounding the inner circumference of the outer tube 1. terminating in a sharp edge-shaped rim 12 and further tapered at its lower end by a second flange 6 corresponding to the conical shape of the inclined wall forming the upper part of the inwardly extending shoulder 5; Apparatus according to any one of claims 1 to 3, having a pointed upper part corresponding to the extended shoulder 5 or the lower pointed rim 12.