Ball bead supporting bridging sample anti-blocking drainage device for vacuum sealing drainage

Abstract

The invention discloses a ball support bridging sample anti-blocking drainage device for vacuum sealing drainage. The ball support bridging sample anti-blocking drainage device comprises an upper support layer and a lower drainage layer, ball supports and drainage holes which are uniformly distributed are formed in the surface of the upper supporting layer, and the drainage holes are through holes and are staggered with the ball supports; the surface of the lower drainage layer is provided with drainage through holes which are uniformly distributed, and the drainage through holes correspond to the drainage holes. By the adoption of the porous multi-support double-layer design, under the effective negative pressure condition, structural collapse is avoided, drainage is smooth, blockage is avoided, the PVA material hardly becomes dry and hard, rebound resilience and permeability are greatly improved, sealing and flushing are easy, drainage is easy, and the treatment effect and efficiency are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of negative pressure sealing and drainage, in particular to a ball-supported bridge-like anti-blocking drainage device used for negative pressure sealing and drainage. Background technique [0002] In 1994, Professor Qiu Huade applied Vacuum Sealing Drainage (VSD for short) to general surgery for the first time, creating a precedent for the application of negative pressure sealing drainage technology in general surgery in China. [0003] Existing VSD technology, its basic configuration includes medical hydrophilic foam material or medical hydrophobic foam material (hereinafter collectively referred to as porous foam material for the above medical materials), sealing film, drainage pipeline, collection container and negative pressure source (including medical suction machine, hospital center negative pressure device or negative pressure drainage bottle, etc.). By applying continuous or intermittent negative ...

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Problems solved by technology

[0009] However, there are also relatively large defects in clinical application at present, mainly manifested as: hydrophilic porous foam materials are easy to dry and harden due to dehydration after 2-4 days of clinical application, resulting in a decrease in the resilience of the material and effective drainage of the cavity Reduced significantly, permeability decreased, gradually blocked, and under the action of pus, tissue fluid, exudate, blood and other organic colloids, foam material pores often adhered, and the elasticity decreased and could not rebound... All of the above weakened the impact of the VSD device on Effectiveness and efficiency of wound repair therapy

[0010] In the prior art, someone proposed a structure in which the upper straight columnar support column group and the perforated panel constitute a multi-cavity groove network, but because the straight columnar column is too slender in this structure, there is a problem that the straight columnar support column group is stressed. It is easy to be skewed and misplaced and inserted into the drainage hole to cause blockage; some people have proposed a three-layer honeycomb multi-cavity anti-blocking and anti-collapse wound drainage device, but this three-layer structure has too much space, which will easily lead to poor negative pressure conduction and dead volume. Difficulty in suctioning when there is a lot, medium or small amount of exudate

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