Negative-pressure sucker capable of automatically fitting chest outline

Abstract

The invention discloses a negative-pressure sucker capable of automatically fitting a chest outline. The negative-pressure sucker comprises a sealing skirt, a shape adjustment mechanism, a supporting seat, an observation window and a negative pressure source and connection mechanism. The sealing skirt is arranged at the lower end of the shape adjustment mechanism; the supporting seat is arranged at the upper end of the shape adjustment mechanism; the observation window is arranged on the supporting seat; the negative pressure source and connection mechanism is mounted on the supporting seat. When the negative-pressure sucker is in operation, the sealing skirt directly fits a funnel chest, the shape adjustment mechanism vertically retracts and deforms under the action of external atmospheric pressure to guarantee that the sucker is capable of well fitting chest outlines of different funnel chests, and reduction or sudden disappearance of attraction power of the sucker in use is avoided.

Description

technical field [0001] The invention relates to a medical device for treating pectus pectus excavatum, in particular to a negative pressure suction cup for sucking up the sternum in Nuss operation to facilitate the passage of pectus pectus excavatum bracket. Background technique [0002] Exctus excavatum refers to the deformity of the sternum, costal cartilage, and some ribs to the dorsal side to form a funnel shape. It is a congenital and often familial disease. Because of the inward depression of the sternal body (especially the root of the xiphoid process) and the corresponding 3rd to 6th costal cartilages on both sides of the funnel chest, the heart is compressed and displaced, and the movement of the lungs is also limited due to thoracic deformity, which seriously affects the patient. Cardiopulmonary function, so aggressive treatment is required. At present, 4‰ of children and adolescents under the age of 14 in China are patients with pectus pectus excavatum. The exis...

AI Technical Summary

Problems solved by technology

[0003] Since there are obvious differences in the contour of the chest cavity at the funnel chest of each patient with pectus excavatum, refer to Figure 1 to Figure 3 Therefore, when the negative pressure suction cup of the prior art is in contact with the thorax of the human body, it is difficult to completely match the edges, which may easily cause air leakage

Therefore, the negative pressure sucker of prior art can not satisfy the requirement of pectus excavatum treatment

In view of the fact that the negative pressure suction cup of the prior art is not closely attached to the human thorax, the adsorption capacity is reduced, and even the suction suddenly disappears during the operation, resulting in accidents; therefore, it is necessary to design a new negative pressure suction cup specially used for the treatment of pectus excavatum. Suction cup, this kind of negative pressure suction cup needs to be able to match the chest contour of different patients with pectus pectus excavatum, automatically adapt to changes in the chest contour of different patients, maintain a good fit with the human chest, continue to maintain negative pressure, and ensure safe operation

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