Chemical apparatus and process disinfecting – deodorizing – preser – Elements or adjuncts
Patent
1988-10-17
1990-11-20
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Elements or adjuncts
422295, 422296, 220358, 220361, 220366, 220378, A61L 226, A61L 206, A91B 1902
Patent
active
049717740
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a sterilizing container for surgical instruments or the like comprising a bottom part and a lid sealingly positionable thereon, with a seal made of an elastically deformable material extending around the lid along the outer circumference thereof and being fixed to the lid by means of a profiled strip.
Sterilizing containers of this kind are, for example, known from German Patent No. 3 407 112.
The profiled strip used to hold the seal in the known design is a metal section which is riveted to the lid. Aside from the expenditure involved in making the rivet joint, for which purpose bores must be made in the lid, the riveted joint also causes a change in the lid surface as the rivets normally protrude beyond the lid surface.
In other known lid seals, the lid is deformed in such a manner as to form a groove for accommodation of a band-shaped seal on the inside. This type of manufacture, too, is elaborate and results in a change in the lid surface.
The object of the invention is to so improve a sterilizing container of the generic kind that it is possible to fix a soft seal on the inside in a simple manner without changes having to be made to the lid for this purpose.
This object is accomplished in a sterilizing container of the kind described at the beginning, in accordance with the invention, by the profiled strip consisting of a plastic material with a hard rating and being adhesively bonded to the inside of the lid.
Such a profiled plastic strip may be attached to the lid simply by adhesive bonding or cold vulcanization without the lid having to be worked in a special manner.
In a preferred embodiment of the invention, provision is made for the profiled strip to form between itself and a downwardly drawn rim of the lid an insertion groove for the seal in which the seal is held by frictional or positive connection. Hence the seal is not held by the profiled strip alone, but rather the rim of the lid is simultaneously used as part of a holder for the seal.
In this case, it is particularly advantageous for the insertion groove to be undercut in order to secure the seal. This then ensures safe fixing of the seal, yet the seal can be easily inserted and exchanged.
Insertion may be facilitated by the profiled strip according to a further preferred embodiment of the invention slanting downwardly towards the insertion groove.
It is particularly expedient for the seal to be of circular cross-section and for the profiled strip to be of arcuate cross-section towards the insertion groove.
In a further preferred embodiment, provision may be made for the profiled strip itself to comprise an area of plastic material with a soft rating which forms the seal. A seal in the form of a separate part is then not used, but instead the profiled strip itself forms the seal with its soft rated area.
In a first preferred embodiment, provision is made for the area with a soft rating to be injected onto or adhesively bonded to the profiled strip area of plastic material with a hard rating.
In accordance with another embodiment, however, provision may also be made for the soft rated area and the hard rated area of the profiled strip to be of integral design, more particularly, the hardness may decrease continuously from the hard rated to the soft rated area.
A particularly well suited material for the profiled strip is silicon rubber. The seal or the soft rated area of the profiled strip may preferably consist of a plastic foam, in particular, of porous silicon rubber.
The plastic material with a hard rating may have Shore hardnesses of between 70 and 90, whereas Shore hardnesses of between 10 and 30 are expedient for the seal or the soft rated area of the profiled strip.
Particularly good fixing of the profiled strip on the lid is obtained by the profiled strip having a plane bonding surface which rests against the lid.
It is, furthermore, advantageous for the profiled strip to slant downwardly on its side remote from the seal, thereby forming an acute angle between the downwardly slanting side and the bonding
REFERENCES:
patent: 4512498 (1985-04-01), Leibinger
patent: 4551311 (1985-11-01), Lorenz
Schwanke Wolfgang
Taschner Wolfgang
Aesculap AG
Kummert Lynn M.
Warden Robert J.
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