Ballantine Clamp – Who do you call when you need to clamp and sever a tough ligament from both sides of the uterus? Anyone with a Heaney-Ballentine clamp, of course. This tool falls under the category of heavy clamps, as it has a rigid shaft and vertical serrations that can crush parametrial and paracervical tissue during hysterectomies, for instance.– Who do you call when you need to clamp and sever a tough ligament from both sides of the uterus? Anyone with a Heaney-Ballentine clamp, of course. This tool falls under the category of heavy clamps, as it has a rigid shaft and vertical serrations that can crush parametrial and paracervical tissue during hysterectomies, for instance.