Plunger for syringe
First Claim
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1. A plunger for a syringe including a piston which is slidably inserted into a barrel and a rod connected to said piston, comprising:
- a female thread formed at the center of said piston; and
a male thread which is screw-engaged into the female thread of the piston;
wherein the axial length T of the crest of the female thread and the root of the male thread which engages with the female thread is greater than the axial length t of the root of the female thread and the crest of the male thread.
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Accused Products
Abstract
In a plunger for a syringe including a laminated piston which is provided with a shaft with a female thread and which is slidably inserted into a barrel and a rod having a male thread which can be screw-engaged in the threaded hole of the laminated piston, the axial length T of the crest of the female thread and the root of the male thread which engages with the female thread is greater than the axial length t of the root of the female thread and the crest of the male thread.
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Citations
6 Claims
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1. A plunger for a syringe including a piston which is slidably inserted into a barrel and a rod connected to said piston, comprising:
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a female thread formed at the center of said piston; and a male thread which is screw-engaged into the female thread of the piston; wherein the axial length T of the crest of the female thread and the root of the male thread which engages with the female thread is greater than the axial length t of the root of the female thread and the crest of the male thread. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification