Patent Number: 
Section: claims

1. A compression member for insertion into a pig for transporting a container of biohazardous materials, the compression member comprising:a flange maintained in spaced relation with an annulus by pillars; andspaced apart pivotable grip components supported by the annulus and extending downwards from the annulus between respective ones of the pillars towards, but not into contact with, the flange,the pivotable grip components biased to a substantially vertical orientation between the pillars and resiliently compressible inwardly by the pig against the bias against the container thereby to grip the container while both the container is received within the compression member and the compression member is received within the pig. 2. The compression member of claim 1, further comprising a ramp on an outward-facing surface of each of the grip components for engagement by the pig to progressively urge the pivotable grip components against the container as the compression member and the container are urged further into the pig. 3. The compression member of claim 1, further comprising a buttress at the interface between each pillar and the flange. 4. The compression member of claim 1, wherein the flange comprises a sloped edge about its periphery for snap retention within a complementary annulus of the pig. 5. The compression member of claim 1, wherein the flange, annulus, pillars and grip components are formed as a unitary structure. 6. The compression member of claim 1, wherein the compression member is formed of a thermoplastic material.