Broome Rodent Restrainers


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Broome Rodent Restrainer is one of the most convenient types of restrainer when the ease of the experiment is in question; the experimenter can use both his/her hand when injecting the caudal vein. Our Broome restrainer is made up of the finest quality acrylic and comes in a variety of sizes. Choosing the right size of the restraint is vital; if the restraint is too large the animal can easily turn around, and if the restraint is too small the animal might not be able to breathe properly.

Broome rodent restrainer is a cylindrical device that is closed on one end. An open groove extends from the opening to the center of the endplate for the adjustment of the nosepiece. On the adjacent side of the open groove, a slit that runs the entire length of the tube aids to get access to the rodent’s tail.

First, the nosepiece should be removed from the body of the Broome-style restrainer by loosening the screw. Position the restrainer so that the slit that runs the entire length of the tube is facing up. Hold the subject by the base of the tail and gently introduce the subject into the restraint device.

Note: Hind limbs should be introduced first. Furthermore, it is always beneficial to place the animal on a smooth surface to expedite its placement into the Broome-style restrainer.

Once the subject is introduced securely, the nosepiece is placed in the groove and tightened so that the open end is sealed. Ideally, the nose of the subject should be projected at the center of the nosepiece. Caution: To avoid suffocation caused to the subject, the nosepiece should not be over-tightened.

Our Broome style restrainer is exceptionally advantageous:

  • Minimum handling is required; once the subject is secured, the experimenter can simply immerse the tail in warm water for vasodilation.
  • Minimum stress evoked in subjects; the Broome style handler calms the animals as they will not try hard to escape as an escape is blocked.
  • The cylindrical design impedes the movement of the rodents once they are safely secured within the restrainer.
  • Equally favorable for injection delivery and blood sampling techniques.


15 to 30g 4.8cm x 9.0cm
30 to 70g 1.5″ diam. x 5.5″ long.
125g to 250g 2″ diam. x 8″ long
250g to 500g 2.5″ diam. x 8.5″
500g to 800g 3.5″ diam. x 9″ long


Proper handling and management of experimental animals is an important aspect of various research procedures. Minimal handling, such as cage changing and other noninvasive procedures have been found to cause physiological manifestations of stress in rodents, including elevated heart rate and blood pressure levels (“Rodent Handling and Restraint Techniques,” 2017). Given that prolonged effects of stress can influence research outcomes, it is imperative that researchers are equipped with the right knowledge, training, and tools for proper animal handling and restraint methods.

The Broome restrainer is one of many types of restraint devices that provide a tightly enclosed fit around the rodent, designed to give access to the tail for intravenous injections. The Broome handler is a cylindrical device that is closed on one end, with an open groove extending from the open end to the center of the end plate for the adjustment of the nosepiece. A slit runs the entire length of the tube, serving to accommodate the rodent’s tail. Injecting the rodent through the caudal vein usually requires more than one pair of hands to hold the animal down and to secure the area for injection, but the Broome restrainer successfully addresses this commonly-faced difficulty through its novel design. The restraint devices such as the Broome handler are useful for injections and blood sample collection.