JPH0459903B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for producing a body coupling element, more particularly a bag (or pouch) for receiving excreta.
The present invention relates to a method for manufacturing by injection molding a body side coupling element having an arched slot for use in an ostomy coupling which is removably connected to a pad attached to the wearer's body. Such bags are often referred to as "ostomy bags."

PROBLEMS SOLVED BY THE PRIOR ART AND THE INVENTION It is an object of the present invention to provide a body side coupling for an ostomy that consists of a minimum number of parts, is simple and economical to manufacture, and provides a secure and leak-free installation. An object of the present invention is to provide a method for manufacturing a coupling element. A two-part design for a colostomy coupling that is better than conventional colostomy couplings is disclosed in US Patent No. 4460363 by PL Steer et al. [Name: Ostomy BAG, patented on July 17, 1984]
has been disclosed. British Patent No. 2,121,902 discloses another design for a colostomy coupling which is preferred from the standpoint of flexibility and reduced thickness. A reduction in overall thickness is desired so that the device is less noticeable when worn under lightweight or athletic clothing. It would also be desirable to be able to separate the ostomy coupling with relatively low release forces without adversely affecting the leak-tight properties.

Structure and Effects of the Invention The colostomy coupling according to the present invention has two
Consists of two interlocking coupling elements,
One coupling element is a bag-side coupling element having a radially inwardly extending deformable peripheral seal and an outer rim, and the other coupling element has an annular flange with a central opening for the stoma; a cylindrical wall surrounding the opening; an arched wall that is arranged in a series around the cylindrical wall at regular intervals radially outward from the cylindrical wall and has an inwardly projecting flange; and a colostomy coupling element which is an integrally molded body side coupling element comprising an arched slot provided radially inwardly adjacent each arched wall of an annular flange, the bag side coupling element being an integrally molded body side coupling element. a peripheral seal cooperating with the outer wall surface of the cylindrical wall of the body coupling element, and an inwardly projecting flange of the arched wall of the body coupling element being positioned to overlap the outer rim of the bladder coupling element. and each of the arcuate walls of the bodyside coupling element has substantially the same dimensions as the arcuate slot and is concentric.

The body coupling element is integrally molded. As mentioned above, each of the arcuate walls has the same dimensions and is concentric with the arcuate slot provided through the annular flange. These arcuate slots are provided in such a way that the lateral coupling element can be made in a single injection molding operation, despite the fact that the lateral coupling element has a reentrant structure when viewed in radial section. It is being

The two coupling elements are both made of a soft, slightly elastic plastic, and the degree of radial overlap of the coupling elements is chosen such that they can be separated by hand. There is no need for relative rotation of the two coupling elements.

The advantage of the colostomy coupling according to the invention is that by selecting different arch lengths of the arched walls, there is no influence on the quality of the colostomy coupling in terms of liquid sealing ability; The ability to change the detachment force required for separation as appropriate. Thus, this basic design is versatile in that the colostomy coupling can be designed to suit any desired withdrawal force.

The present invention includes an annular flange having a small hole opening at the center, a cylindrical wall surrounding the small hole opening, and a cylindrical wall surrounding the cylindrical wall at regular intervals radially outward from the cylindrical wall. An integral molded product consisting of arch-shaped walls arranged in a series and having inwardly protruding flanges, and arch-shaped slots provided in adjacent locations radially inward of each arch-shaped wall of the annular flange. each of said annular flange, said cylindrical wall and said arched slot; While forming the inwardly projecting flange by inserting an axially extending mold for the inwardly projecting flange of the arched wall into an arched slot of a mold having a shape corresponding to the wall and the arched slot; , manufacturing a body side coupling element, characterized in that the body side coupling element is integrally injection molded from a synthetic plastic material, and then the molded body side coupling element is taken out from the mold in the axial direction from the mold for the inward projection flange. It provides law.

Hereinafter, the present invention will be described in more detail based on the accompanying drawings.

FIG. 1 shows an example of a detached state of the bag-side coupling element and the body-side coupling element in an axial cross section.

FIG. 2 shows the connected state of both coupling elements.

The illustrated ostomy coupling element of the present invention includes two interlocking coupling elements, a bag-side coupling element 10 and a body-side coupling element 12. As shown in Figure 1,
The bag-side coupling element 10 includes a radially inwardly extending deformable peripheral seal 14 and an outer rim 37.
has. Line 15 is the common axis of both coupling elements 10, 12 around stoma opening 18. The deformable peripheral seal 14 cooperates with the outer wall surface of the cylindrical wall 16 of the bodyside coupling element 12 . Such peripheral seal 14 and its function are described in more detail in British Patent No. 1568860. As can be seen, the bag-side coupling element 10 includes a filter housing 22 that includes a filter medium 24.
can also contain a cover or lid 26
It may have. A more detailed description of these filter housings 22 etc. can be found in British Patent Application No. 8531257. Note that the filter housing 22 is not an essential component in the present invention and can be omitted if necessary.

The body coupling element 12 has an annular flange 30
The lower surface 32 of the annular flange 30 is adapted for attachment in any suitable manner to a pad of medical or surgical adhesive (not shown).
The cylindrical wall body 16 and the annular flange 30, which constitute a chute for guiding excrement into the interior of the bag (or pouch), are integrally molded. As shown in FIG. 2, when both coupling elements 10, 12 are assembled in a connected state, the cylindrical wall 16 allows the fecal waste discharged by the wearer to be guided into the interior of the bag by the chute. This prevents access to or the possibility of accumulation between the ends of the side coupling elements 10.

Further, the arch-shaped walls 34, which form part of the body-side coupling element 12 and are arranged in a series to constitute an interrupted peripheral wall, are also integrally molded. Each of the arched walls 34 has an inwardly projecting flange 36 . As shown, the inner protrusion flange 3
6 tapers towards its radially inner end, and this construction is employed to render the inwardly projecting flange 36 flexible and deformable. When assembling the two coupling elements 10, 12, both coupling elements 10, 12 are moved axially towards each other and then the outer rim 37 of the bag-side coupling element 10 is pressed against the inner projecting flange 36. . Once the two coupling elements 10, 12 are thus in the relative position shown in FIG. 2, the inner projecting flange 36 springs outwards due to its inherent elasticity.

As can be seen from the drawings, the presence of the inwardly projecting flange 36 leads to a reentrant configuration that prevents the body coupling element 12 from being molded as a single piece. In the region of each arched wall 34, the annular flange 30 has an arcuate slot 38, the purpose of which is to insert the inner protruding flange 3
In order to properly define the shape of the flange 6, it is possible to insert a suitable mold for the inwardly protruding flange 36. an annular flange 30, a cylindrical wall 16 and an arcuate slot 38 of the mold having a shape corresponding to the arcuate slot 38;
While inserting a suitable mold for the inwardly protruding flange 36 to form the inwardly protruding flange 36,
After integral injection molding of the body coupling element 12 from a synthetic plastic material, the molded body coupling element 12 is removed from the mold in the axial direction from the mold for the inward projecting flange 36. The provision of the arcuate slot 38 in this manner allows the carcass coupling element 12 to be manufactured in a single injection molding operation, thereby increasing manufacturing efficiency, and the arcuate slot 38 portion The elimination of synthetic plastic materials results in cost savings.

In one embodiment of the invention, eight arched walls 34 may be provided, with each arch angle at a 45 degree angle to the axis, with neighbors spaced apart at similar angles. ing. In other embodiments, six arched walls 34 may be provided, in which case the arch angle is at a 30 degree angle to the axis.

The breakaway force required to separate the two coupling elements 10, 12 can be adjusted by adjusting the inward overlap of the inwardly projecting flange 36 relative to the outer rim 37; Another method is to vary the degree of arching of the arched wall 34. The engagement of the peripheral seal 14 and the cylindrical wall 16 allows various modifications to be made without affecting the fluid sealing capabilities of the ostomy coupling.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the state when the two coupling elements of an example of the coupling for colostomy of the present invention are separated, and FIG.
10, 12: coupling element, 14: peripheral seal, 16: cylindrical wall, 18: small hole opening, 3
0: Annular flange, 34: Arch-shaped wall, 36:
Inner projection flange, 37: outer rim, 38: arched slot.

Claims (1)

[Claims] 1. An annular flange with a small hole opening in the center, a cylindrical wall surrounding the small hole opening, and a series of flange surrounding the cylindrical wall at regular intervals radially outward from the cylindrical wall. An integrally molded product consisting of an arch-shaped wall body having an inwardly protruding flange, and an arch-shaped slot provided in a radially inwardly adjacent location of each arch-shaped wall body of an annular flange. each of said annular flange, cylindrical wall, arcuate wall and The synthetic plastic is inserted into the arched slot of the mold having a shape corresponding to the arched slot to form an axially extending mold for the inwardly projecting flange of the arched wall. A method for producing a body side coupling element, which comprises integrally injection molding the body side coupling element from a material, and then taking out the molded body side coupling element from the mold in the axial direction from the mold for the inward projection flange.