Digestive tract stent of soft section and hard section structure

Abstract

The invention provides a digestive tract stent of a soft section and hard section structure. The digestive tract stent comprises a tubular support body and two heads. The wall of the support body and the walls of the two heads are all mesh bands. The two ends of the support body are connected with the two heads respectively. The support body is formed by connecting a plurality of soft supporting units and a plurality of hard supporting units in an alternate mode. Each head is composed of soft supporting units and hard supporting units. The outermost end of the each head is the soft supporting unit. According to the digestive tract stent, the soft supporting units can reduce the supporting force of the ends, the hard supporting units correspond to the stenosis or obstruction diseased part needing expanding treatment, in this way, the hard supporting units have large supporting force, the supporting effect is good, and restenosis can be reduced; due to the structure that the soft sections and the hard sections are connected in an alternate mode, the compliance of the support can be improved, the digestive tract stent can be better adaptive to curving and peristalsis of the digestive tract, untoward effects such as movement and stimulus are reduced, recycling of the digestive tract is convenient, and the clinical effect is better.

Description

technical field [0001] The invention relates to a medical bracket, specifically a digestive tract bracket with soft and hard segment structures. Background technique [0002] At present, the stents of the digestive tract are mainly grid-like stents, but the same radial support force is sometimes not suitable for different patients, resulting in clinical problems: for example, the support force of the two ends of the stent is greater than that of other parts of the stent, and the ends will The supported digestive tract bears a lot of force, and the edge of the end produces strong friction and irritation to the digestive tract, so the edge of the stent causes redness, inflammation, pain, and even perforation to the digestive tract, and the support force at the end is large and it is not easy to recover and remove; Insufficient support of the stent can cause the stent to shift or even fall into the stomach, restenosis, difficult recovery, and even lead to secondary surgery in ...

AI Technical Summary

Problems solved by technology

[0002] At present, the stents of the digestive tract are mainly grid-like stents, but the same radial support force is sometimes not suitable for different patients, resulting in clinical problems: for example, the support force of the two ends of the stent is greater than that of other parts of the stent, and the ends will The supported digestive tract bears a lot of force, and the edge of the end produces strong friction and irritation to the digestive tract, so the edge of the stent causes redness, inflammation, pain, and even perforation to the digestive tract, and the support force at the end is large and it is not easy to recover and remove; Insufficient support of the stent can cause the stent to shift or even fall into the stomach, restenosis, difficult recovery, and even lead to secondary surgery in severe cases

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