FIELD: treatment of burns. SUBSTANCE: either a thin or flat skin flap can be perforated by turning hold-down die towards hold-down plate without deforming and damaging the members of structure due to pretensioning of wedge-like plates by screws and due to provision of flexible gaskets. EFFECT: improved design. 3 dwg
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|---|---|---|---|
| PERFORATOR | 1990 |
|
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