Artery constrictor

Abstract

The invention provides an artery constrictor which comprises an artery vessel clamp device and an artery constriction device, wherein the artery constriction device comprises a hand wheel, a bidirectional transmission micro-shift mechanism and vessel constriction blades, the bidirectional transmission micro-shift mechanism comprises a bidirectional screw and two brackets, the bidirectional screw comprises left-handed first threads and right-handed second threads, the vessel constriction blades are respectively fixed on the two brackets, the hand wheel is connected with the bidirectional screw, and the vessel clamp device is arranged between the two vessel constriction blades. The bidirectional screw of the bidirectional transmission micro-shift mechanism is rotated by the hand wheel in the artery constrictor, so that the two vessel constriction blades on a drive screw oppositely move, and artery narrow deformation and control on the variation of blood flow are realized. The screw transmission has a big transmission ratio, and accurate control is easy to realize. In particular, the artery constrictor is simple and convenient to operate, and series products are formed by change of the vessel clamp device.

Description

technical field [0001] The invention relates to an arterial constrictor, which is mainly suitable for measuring and controlling the blood flow of carotid arteries of animals, and belongs to the field of medical equipment. Background technique [0002] The common cause of carotid artery stenosis is atherosclerosis, that is, the formation of plaques on the carotid artery wall. When these plaques increase or rupture, it will cause carotid artery stenosis or embolism, which will reduce the distal perfusion pressure and cause hypoperfusion. Cerebral infarction. In order to study the response characteristics in the case of arterial stenosis, it is necessary to establish a stable and reliable arterial stenosis model in order to make a correct diagnosis and treatment of the degree of arterial stenosis. At present, there are many methods for preparing animal models of carotid artery stenosis: mainly carotid adventitia implantation of silicon rubber rings, balloon injury, electrical ...

AI Technical Summary

Problems solved by technology

According to the measurement method provided by this utility model, it can be seen that it develops a pliers clamped on the outer diameter of the artery and the caliber can be quantitatively changed, so that the inner wall of the artery has different shapes and different sizes of stenosis; the principle of the utility model is simple , but due to its structural characteristics, it is difficult to achieve precise control of the degree of arterial stenosis

Images