4 results about "Bolster" patented technology

A gastrostomy device includes a tubular portion and an internal bolster having a radial wing secured to the tubular portion. The internal bolster is flexible and permits elastic deformation between a first orientation with the wing wrapped into a generally cylindrical configuration and a second orientation with the wing unfuried. A constraining member encases the internal bolster to retain the internal bolster in the first orientation and to cover at least a major portion of the wrapped wing. Removal of the casing permits the internal bolster to move from the first orientation to the second orientation. The internal bolster may be deployed by a ripcord, freeing the internal bolster into the patient' stomach and deploying the internal bolster to the second orientation. Alternatively, the internal bolster may be deployed by the constraining member being dissolved by the patient's bodily fluids located inside the patient's stomach.

The invention relates to a device for thermal treatment after welding of a partition board of a steam turbine, the partition board comprises an inner ring, a static blade and an outer ring, special devices comprise a bolster, filler blocks, a pressure plate and screws of the pressure plate, wherein the bolster is arranged below the partition board, n screw holes are formed in the positions of the inner side of the inner ring of the partition board and the outer side of the outer ring along the circumferential direction, wherein n is a natural number; the filler blocks are arranged on the bolster and comprise the outer ring filler block and the inner ring filler block, and the outer ring filler block and the inner ring filler block are respectively positioned below the outer ring and below the inner ring of the partition board. The device can achieve the purposes of eliminating the welding stress of the partition board while fully ensuring the size of the partition board, avoid ultra-poor products, lead the primary qualified rate to be 100% and bring great economic benefits for enterprises.

The invention relates to a guide sleeve removing device in a die, which comprises guide pillars (1) fixed in a punch fixing plate (6) and a punch bolster (7), a stripper pad (5) and a stripper plate (4), and guide sleeves (3) fixed in annular holes (2), wherein the upper parts of the guide pillars (1) are provided with the stripper pad (5) and the stripper plate (4) in turn; the positions on the stripper pad (5) and the stripper plate (4) corresponding to the guide pillars (1) are provided with the annular holes (2); and at least one through hole (8) is formed in the stripper pad (5) to communicate the outer space of the die with a space formed by the guide pillars (1), the inner wall of the stripper pad (5), the upper surface of the punch fixing plate (6) and the bottoms of the guide sleeves (3). The guide sleeve removing device has the advantages that the defect that the guide sleeve which falls into a fixed die plate can be taken out only by disassembling the die plate again conventionally is overcome by the guide sleeve removing device in the die; and the guide sleeves are taken out by simply and conveniently blowing air into the through hole by using a high-pressure air source.