Gathering Needle Shear Properties

Purpose:

To Ensure the haptic accuracy of our needle insertion simulators we have begun an effort to gather shear-data from needles inserted into human tissue.

System Setup:

The system will measure the load between the needle, syringe and the depth of needle penetration.

The data will be available for downloading as it is gathered. We highly encourage critical feedback to assist us in creating the most useful data possible.

Thumbnail of data collection device

Status:

We are currently awaiting delivery of the two Entran load cells ELPS-T1 bi-directional (+- 10 lbs) andELFS-B0 compression only (+2 lbs). The ELPS-T1 will be used to measure the load between the needle and the syringe. The ELFS will measure the force exerted by a spring pressing against the outermost tissue. This force will be both translated into a depth of penetration and subtracted from the other load cell output.

Sponsorship:

This effort is generously sponsored by the Harmon Foundation.

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