Abstract: The present invention is to provide a paint roller with tubular frame processed through less contamination process, lower material cost, light weight but durable in use. The present invention is to provide a paint roller with tubular frame includes, at least, a tubular axle (1); a cylinder (4) at a distal end of said axle (1); and a handle (3) at a proximal end of said axle (1); characterized in that: being processed through roll mill to reel stretch said axle (1) to form bent portions (2), which further processed through stamping machine to lengthen, flatten and bend the bent portions (2), where a cross section of said bent portions (2) shown a width larger than a height shaped in an overall flattened configuration (A).

Abstract: A circular stapler facilitate performing end to end anastomosis; further an occasional prompt with sound effect warning timely firing the stapler bolts. A circular stapler includes a bolting machine (1) consists of a shaft (11), an actuator (12), and a stapler (13); a hand-held handle (2); an adjusting knob (3); and an anvil (4), a hollow anvil shaft (41); characterized in that: a conic trocar (5) disposed to a most distal end of said bolting machine (1), a cambered surface of said conic trocar (5) formed with, at least, three relieve-pressure grooves (53) equal distant distributed are extended from an apex (51) to a bottom (52); an audio prompt (6) disposed inside said bolting machine (1), said audio prompt (6) includes a printed circuit board (PCB) (61), a buzzer (62) electrically connected to the PCB (61) controlled by a switch, and a battery (64) supplies power to the PCB (61).