Unidirectional flap

A valve and one-way technology, applied in the field of medical devices, can solve problems such as limited gap width, many horn nodes, and damage to the inner wall of the bronchi, and achieve improved support and stability, reduced horn nodes, and reduced occurrence probability Effect

Active Publication Date: 2014-04-30
SHENZHEN LIFETECH RESPIRATION SCI CO LTD
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (2) The duckbill bronchial valve has an open structure at both ends, which is not conducive to loading the controllable connection part and recovery part at the end of the device, so the release process is uncontrollable, the frame jumps forward, and it cannot be accurately positioned in the emphysema area ;If the release position is wrong, the device cannot be retracted into the sheath and released again
[0009] (3) The treatment effect is not good, and there are still symptoms of airflow obstruction such as pneumothorax and secretion accumulation, which may be because the opening of the duckbill valve 105 is located in the middle of the valve support 103, and the opening of the duckbill valve 105 is far away from the inner wall of the bronchus The mucociliary of the bronchi cannot be discharged naturally through the movement of the mucociliary of the bronchi;
[0010] (4) The slit width of the duckbill valve 105 opening is limited, which can easily lead to accumulation of secretions, and the secretion can only be discharged from the slit by coughing
[0015] (2) Since the anchor rod 205 is too long, it will damage the inner wall of the bronchi, increasing the risk of complications such as bronchitis;
[0016] (3) The umbrella-shaped bronchial valve is an open structure at both ends, and its release process is uncontrollable, and the frame 202 may jump forward, which cannot be accurately positioned in the emphysema area; in addition, if the release position is found to be wrong, the device will also Cannot be retracted into the sheath for re-release;
[0017] (4) The struts 204 and anchors 205 of the umbrella-shaped bronchial valve are connected together by welding. Both the struts 204 and the anchors 205 are elastic and their ends extend independently of each other, so the struts 204 and the anchors 205 The ends are easily bent and deformed;
[0018] (5) When the umbrella-shaped bronchial valve is placed in the bronchi, once the strut 204 and

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Unidirectional flap
  • Unidirectional flap
  • Unidirectional flap

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0057] Example 1

[0058] Such as image 3 As shown, the bronchial valve of Embodiment 1 of the present invention includes a frame 302 and an insulating film 304. The frame 302 includes a distal end 306 away from the human oral cavity, a proximal end 307 close to the human oral cavity, and a middle part connecting the proximal end 307 and the distal end 306, The middle part is composed of a plurality of longitudinal beams 301 parallel to the central axis. Both ends of each longitudinal beam 301 are bent at a certain angle and then extend to the proximal and distal ends to form a closed lantern frame 302; the longitudinal beams 301 are close to The inner surface and the outer surface of the distal end 306 are provided with groove-like membrane covering sites 303 (hereinafter referred to as the membrane covering groove); the part between the membrane covering groove 303 and the distal end 306 is covered with the insulating membrane 304. The edge 305 of the insulating film 304 exten...

Example Embodiment

[0071] Example 2

[0072] Such as Picture 8 As shown, in this embodiment, in order to enhance the adhesion of the insulating film to the frame 302, a grid 801 is set at the connection between the frame 302 and the distal end 306. When the instrument is received in the delivery system, the insulating film can be accommodated in the grid, thereby Avoiding the friction between the insulating film and the conveying system also enhances the adhesion of the insulating film on the surface of the device.

[0073] In addition, in order to strengthen the firmness of the device at the target site in the bronchus, a protruding point was added to the hole-shaped membrane site (hereinafter referred to as the membrane hole) of the longitudinal beam 301 to increase the friction between the longitudinal beam and the bronchus. This prevents the device from shifting in the bronchus. The process of making bumps is as follows: insert a nickel-titanium rod on the film hole 303, and after welding with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Wall thicknessaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a unidirectional flap. The unidirectional flap comprises a framework and an isolation membrane, wherein the framework comprises a far end, a near end and at least three vertical beams which are arranged between the near end and the far end; membrane-coating loca are arranged on the surfaces of the vertical beams; convex points are arranged on the membrane-coating loca and used for increasing friction force between the unidirectional flap and a bronchial tube; at least one isolation membrane penetrates through the membrane-coating loca to be covered on the surface of the far end; a mesh is arranged at the far end; and the near end is a closed structure which is composed of 2-3 sealed, mutually-separated and flap-shaped structures. According to the unidirectional flap, due to the adoption of the closed framework structure, support force and stability of the framework are improved; and quoin points, contacted with the inner wall of the bronchial tube, of the framework are reduced; damage rate of the inner wall of the bronchial tube caused due to machines is reduced; and occurrence probability of bronchitis is reduced.

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to an implantable medical device, in particular to a one-way valve implanted into the lung by intervention for treating lung diseases. Background technique [0002] Chronic obstructive pulmonary disease, such as emphysema, is a common lung disease. Traditionally, medical treatment of emphysema includes oxygen inhalation, prevention of lung infection, bronchial spasm relief, etc., but the curative effect is extremely limited; surgical treatment is mostly based on lung volume reduction surgery, but there are many limitations, such as Strict surgical indications, many complications, anesthesia and anesthesia-related complications, difficult to predict preoperative curative effect, postoperative unsatisfactory results caused by too much or too little resection, high surgical cost And greater mental and physical pain, in addition, some patients often cannot tolerate surgery because of their...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61F2/04A61B17/12
Inventor 林伟林李安宁
Owner SHENZHEN LIFETECH RESPIRATION SCI CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products