Package making – Interrelated or safety controls
Patent
1976-02-20
1977-08-09
McGehee, Travis S.
Package making
Interrelated or safety controls
53 21FW, 53 25, 53 29, 128348, 264320, B65B 5518
Patent
active
RE0293431
ABSTRACT:
A catheter for insertion into the human body and made of a thermoplastic tubing, is preformed to a desired shape by heating it above its free form temperature and allowing it to cool while held in that shape. To hold the catheter in position for such forming and/or for storage before use, a forming board having a catheter receiving groove of the desired shape is used. [The] In the form of the invention shown, the cross-sectional shape of this groove is wider at the bottom and narrower at the open top where it becomes a part of the board so as to hold the catheter in place during the forming and storage and to allow the catheter to be easily removed thereafter. This particular form of forming board is made by vacuum forming a sheet of thermosetting plastic or thermoplastic material over a solid, non-heat responsive, master representation of the exact longitudinal shape of the final preformed catheter. The cross-sectional shape of the master is the negative of the desired cross-section of the final forming board groove. When the catheter has been [so] preformed and lies in one of the forming board grooves, it and its forming board are packaged in a sealed plastic bag which is, like the catheter and the forming board, permeable to sterilizing gas. The resulting package is gas claved and stored in this sealed condition until ready for use. The catheter is removed from the sealed package and from the forming board immediately before insertion into the body. When it has served its purpose, it [is] can be removed from the body, cleaned, positioned back into [the] a forming board, preformed with heat when necessary, placed in another sealed film container, and resterilized for storage until it is again needed.
REFERENCES:
patent: 1573023 (1926-02-01), Wrighton
patent: 3022614 (1962-02-01), Dreyfus et al.
patent: 3043067 (1962-07-01), Rynkiewicz et al.
patent: 3612038 (1971-10-01), Halligan
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