Syringe barrel with roughened surface
First Claim
1. A syringe barrel, comprising a flange having a front surface and a rear surface, wherein at least one of the front surface and the rear surface of the flange is roughened.
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Accused Products
Abstract
Since this syringe has projections provided on the rear surface of a flange of a syringe barrel, when it is inserted in an insertion groove of a cylinder holder, the tips of projections are compressed and the flange is fixed. Consequently, even when a solution having high viscosity is injected at higher pressure, breakage does not occur easily. Further, pressure-receiving area may also be increased by providing a guide defining mounting direction of a syringe, alternatively, a positioning mechanism may be provided so as to obtain mounting at a correct position, or the surface of a flange may be roughened.
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Citations
9 Claims
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1. A syringe barrel, comprising a flange having a front surface and a rear surface,
wherein at least one of the front surface and the rear surface of the flange is roughened.
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5. A cylinder holder comprising a flange insertion groove having at least one surface for holding a syringe barrel that comprises a flange having a front surface and a rear surface;
- at least one of the surfaces of the flange insertion groove being roughened, said roughened surface adapted to be contacted with the front surface or the rear surface of the flange.
- View Dependent Claims (6)
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7. A syringe piston, comprising a syringe piston rod having a rear end surface that is roughened.
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8. A piston holder, comprising a roughened press surface adapted to contact the rear end surface of a syringe piston rod.
Specification