CN2492250Y

CN2492250Y - Safety esophageal support

Info

Publication number: CN2492250Y
Application number: CN 01244901
Authority: CN
Inventors: 仇学明
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-17
Filing date: 2001-07-17
Publication date: 2002-05-22
Anticipated expiration: 2011-07-17

Abstract

The utility model discloses a safe esophagus bracket, which relates to a non-thorn shaped structure that leads a bracket located in an esophagus outside of an esophagus bracket (1) that is completely coated, the non-thorn shape shaped structure is a pin (2), or net-shaped metallic ring (3) or net-shaped metallic sheet (4) or pin with net-shaped metallic ring or with net-shaped metallic sheet. The pin or net-shaped non-film metallic ring or metallic sheet stimulates the die sticking of the esophagus, which causes the granulation proliferate and grow into the pin or net-shaped metallic ring or the net hole of the metallic sheet to fixing the bracket to prevent displacement, the bracket has no agnail, and can not lead the esophagus further become narrow or perforate, which results in massive haemorrhage, and can be taken out conveniently, when the bracket is weighted upwards, the pin on the outside break open automatically, after the bracket is taken out, the net-shaped metallic ring or sheet that is separated with the bracket is left in the esophagus, which ensures the safety of the life.

Description

The safety Esophageal Stent

Technical field

This utility model belongs to medical apparatus and instruments, is specifically related to the structure of safety Esophageal Stent.

Background technology

Treat various esophagostenosiss or esophageal fistula clinically and adopt the coated esophagus support more, at present, coated esophagus support both domestic and external mainly contains two kinds, i.e. rustless steel Z type Esophageal Stent and Nitinol network, and these two kinds of supports all have significant disadvantages, rustless steel Z type Esophageal Stent outside band prevents the agnail that support moves down, agnail may puncture blood vessel, causes massive hemorrhage, threat to life, film is not with at Nitinol Esophageal Stent two ends, causes restenosis, perforation of esophagus and massive hemorrhage easily.

Technology contents

This utility model designs a kind of safety Esophageal Stent, in esophagus, prevents the support displacement by non-thorn-like structure locating support on the support, avoids the generation of restenosis, perforation or massive hemorrhage phenomenon, ensures life security.

Technical solution of the present utility model is: making support localized non-thorn-like structure in esophagus, non-thorn-like structure at the complete Esophageal Stent outside band of overlay film is that safety pin or net metal ring or net metal fragment or safety pin add netted becket or expanded metal sheet.

The safety pin in this utility model support outside or overlap netted no film becket, stimulate mucous membrane of esophagus, granulation hyperplasia is grown into prevent displacement with fixed support in the mesh of safety pin or net metal ring, because this support does not have agnail, so can not cause that esophagus restenosis or perforation cause massive hemorrhage after placing, all can take out support easily after two placements, when support makes progress when stressed, the safety pin in the outside can be opened automatically, and support can take out, net metal ring or expanded metal sheet are stayed in the esophagus, less because of the net metal ring, it is little to stay the complication that causes in the esophagus, particularly expanded metal sheet, because of there not being radially expanding, do not cause discomfort.

Description of drawings

Fig. 1 is the structural representation of this utility model band safety pin

Fig. 2 is the sketch map of this utility model band safety pin, net metal ring

Fig. 3 is this utility model band safety pin, the sketch map of expanded metal sheet

Among the figure: 1 support, 2 safety pins, 3 net metal rings, 4 expanded metal sheet

The specific embodiment

Be woven into the biomembrane of covering on the support 1 of skeleton by stainless steel silk or nitinol alloy wire, its side band makes support localized non-thorn-like structure in esophagus, and non-thorn-like structure is safety pin 2 or net metal ring 3 or expanded metal sheet 3.

As shown in Figure 1, safety pin type support 1 outside band 2-4 piece safety pin 2, the safety pin tip is not gone in the support; As shown in Figure 2, the safety pin metal is ring-like, and than the big 2-4mm of stent diameter, length is the netted no film becket 3 of 5-15mm at support 1 overcoat one diameter, and becket 3 usefulness safety pins 2 pin, and safety pin is opened, and support 1 is promptly separable with becket 3; As shown in Figure 3, the safety pin netting type replaces net metal ring 3 by expanded metal sheet 4.

The body cavities overlay film frame, the same support outside can be with and be made the localized non-thorn-like structure of support.

Claims

1, safety Esophageal Stent is characterized in that: band makes support be positioned at Endo-esophageal non-thorn-like structure in Esophageal Stent (1) outside of complete overlay film.

2, safety Esophageal Stent according to claim 1 is characterized in that: connect safety pin (2) in support (1) outside.

3, safety Esophageal Stent according to claim 1 is characterized in that: at support (1) outside cover no film net metal ring (3).

4, safety Esophageal Stent according to claim 1 is characterized in that: in support (1) outside cover no film expanded metal sheet (4).

5, safety Esophageal Stent according to claim 1 is characterized in that: connect safety pin (2) in support (1) outside, overlap no film net metal ring (3), becket (3) is pinned by safety pin (2).

6, safety Esophageal Stent according to claim 1 is characterized in that: connect safety pin (2) in support (1) outside, overlap no film expanded metal sheet (4), sheet metal (4) is pinned by safety pin (2).