SU140699A1 - Instrument for extracting the pituitary glands from whales - Google Patents

Description

To remove the pituitary glands from the heads of mammals, tools made in the form of forceps are usually used, one branch of which is in the shape of a spoon with pointed edges and the other in the shape of a bit.

Known instruments do not completely remove the pituitary from the whale's head through the large occipital foramen.

In the proposed tool, the chisel-shaped braish is equipped with a cutting edge concave along the arc, and a spring-loaded fork with a crank lever is located between the handles of the forceps, fitted at the end with a slider-reflector, fed by pressing the crank lever under the chisel-shaped branch and copying the surface of the skull base bone. This design allows the pituitary gland to be completely removed from the whale's head.

The drawing shows a General view of the proposed tool.

The tool for extracting the pituitary glands from the whale's head is a forceps, the upper branch (which has the form of a spoon with pointed edges), and the lower branch 2 is made in the form of a chisel with a concave but arch cutting edge 3. A spring-loaded fork is located between the handles 4 and 5 of the forceps. 6 with a crank arm 7. The plug is provided with a reflecting slider 8 at the end. On the handle 4 there is a ball-shaped support 9 for the hand.

Extraction of the pituitary gland from the whale's head using the proposed tool is performed as follows. After separation from the whale's body, the head on the side of the frontal bones is facing down. In this position, the brain falls down under the influence of its weight. The tool is inserted into the large occipital foramen so that the lower branch 2 faces the base of the skull. When you release the handle 5, the tool opens under the action

No. 140699-2 springs 10, and the lower branch 2 is pressed against the fibrous membrane of the skull base. Short movement forward until it stops in the bone cut fibrous membrane. To bring the lower branch 2 under the housings without disturbing the integrity of the latter, the reflecting slider 8 is pushed to the foremost position, for which the crank lever 7 is lowered. When this slider-reflector 8 is included in the resulting incision. The advancement of the tool 8–10 cm forward rejects the fibrous sheath together with the pituitary gland from the bones of the skull base. Without displacing the lower jaw 2, releasing the crank lever 7 (the slider-reflector 8 occupies the rearmost position), connect the upper / and lower 2 jaws, after which the instrument together with the pituitary and a part of the adjacent fibrous tissue are removed from the cavity of the medulla. channel.

The All-Union Scientific Research Institute of the Meat Industry notes the novelty and usefulness of the proposed tool.

Subject invention

A tool for extracting the pituitary glands from the whale's head, made in the form of tongs, one branch of which has the shape of a spoon with pointed edges and another form of chisel, characterized in that, in order to completely remove the pituitary gland from the whale's head through the large occipital opening, the chisel-shaped branch is equipped concave along the arc with a cutting edge, and between the handles of the tongs there is a spring-loaded fork with a crank lever, provided with a slider-reflector at the end, fed by pressing the crank lever under the chisel-shaped branch and copying we see the surface of the bone ooyuvapi skull.

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