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Powder sampling device

A sampling device and powder technology, applied in the sampling device and other directions, can solve the problem that the sample sampler cannot collect repeated sampling samples, etc.

Inactive Publication Date: 2009-09-09
NOVAST LABORATORIES (CHINA) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sample sampler of the '620 patent cannot collect resampling samples at each height location with a single sampling

Method used

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  • Powder sampling device
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Embodiment Construction

[0012] The present invention can be embodied in many different forms, as shown in the drawings, and will be described in detail herein. This disclosure should be considered as an illustration of the principles of the invention and not to limit the invention to the specific embodiment shown. Those skilled in the art can create other implementations based on the principles of the present invention.

[0013] The present invention provides a powder sampling device which has two basic parts which are capable of relative movement through rotational movement, linear movement or a combination of rotational and linear movement. In a preferred form of the invention, the device is convertible from a closed position in which all cavities are fully closed to a second position in which two or more powder samples can be collected at the same depth within the powder bed, Alternatively two or more samples may be collected at different depths within the powder bed, or two or more duplicate samp...

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Abstract

The invention provides a powder sampling device, which is provided with a rod piece and a component arranged on the rod piece, wherein the rod piece is provided with a first group of die cavities; the first group of the die cavities are provided with a first die cavity and a second die cavity; the first die cavity is positioned in the axial position generally same as that of the second die cavity; the first die cavity and the second die cavity are separated along the circumferential direction to make the first die cavity occupy the first radial position of the rod piece and the second die cavity occupy the second radial position of the rod piece; the first radial position is different from the second radial position; and the component is arranged on the rod piece, can move from the opening position to the closing position, and collects powder samples in the first die cavity and the second die cavity in the opening position and reserves the collected powder samples in the first die cavity and the second die cavity at the closing position.

Description

technical field [0001] The present invention relates to a tool for recovering, retaining and releasing samples of powdered material from a bed of powdered material. In particular, it concerns the sampling of powder mixtures, especially pharmaceutical powder mixtures. More specifically, the present invention relates to a sampling device or sampler in which triplets of powder samples can be taken at different depths within a powder bed with only one insertion and without changing the initial insertion of the device into the powder bed. Location. Background technique [0002] One of the common steps in the manufacture of solid pharmaceutical dosage forms is the mixing of active and inactive ingredients in a blender. These powder blends are usually sampled and tested to evaluate the uniformity of powder blending. FDA's draft guidance, titled "Powder Mixtures and Finished Dosage Units—Guidance for Industry on Sampling and Evaluation of Layered Processed Dosage Units," recommen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08G01N1/16
CPCG01N1/08
Inventor 陈义生张国华
Owner NOVAST LABORATORIES (CHINA) LTD