DK130624C

• Main Author: WEILAND W
• Format: Patent
• Language: English
• Published: 25.08.1975
• Edition: 2
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; BORING; CHEMISTRY; HUMAN NECESSITIES; HYGIENE; MACHINE TOOLS; MEDICAL OR VETERINARY SCIENCE; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; TRANSPORTING; TURNING; VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS

An obstetric device for aiding the birth process of cattle and the like is disclosed. The device consists of an elongated rod having an end adapted to abut an animal giving birth. The rod is provided with projections spaced longitudinally thereof and two sleeves are slidably mounted on the rod. Each sleeve has a circumferential slot which accommodates a disc, the discs circumferentially surrounding the rod with clearance. A spring in each of the slots biases the discs in such a manner that they partially project into the spaces between the projections on the rod and also partially project outwardly beyond the sleeves. The slots and discs are inclined to the elongation of the rod in such a fashion that the sleeves are able to move in a direction away from the end of the rod which abuts the animal giving birth but are prevented from moving in the opposite direction. Each sleeve is provided with a hook, the hooks on the two sleeves being located on diametrically opposite sides of the rod. A pivotable control lever for effecting movement of the sleeves is so positiond that it overlies the outwardly projecting portions of the discs. In operation, a cable is secured to each hook and the other end of the cable if connected to a leg of the animal being born. Alternate pivoting of the control lever in a sense towards and away from the rod causes alternate movements of the sleeves so that a controlled tension is exerted on the animal being born. In the event of an emergency, the control lever is pivoted as far as possible towards the rod so that it abuts the outwardly projecting portions of the discs. This causes the discs to become disengaged from the projections on the rod so that the sleeves are free to move in a direction towards the end of the rod which abuts the animal giving birth whereby the tension on the animal being born may be quickly released.