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Occluder and method of making the same

A production method and technology of occluder, which is applied in medical science, surgery, prosthesis, etc., can solve the problems of aggravating the difficulty and risk of surgery, large volume of occluder, and difficulty in adapting to blood vessels, so as to reduce the difficulty and volume of surgery Small, effect of reducing surgical risk

Active Publication Date: 2018-09-14
LIFETECH SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an occluder and its manufacturing method, so as to solve the problem that the occluder in the prior art is difficult to adapt to smaller blood vessels due to its large volume and high resistance in the delivery tube sheath. Defects such as aggravating the difficulty and risk of surgery

Method used

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  • Occluder and method of making the same
  • Occluder and method of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] First, if Figure 13 as well as Figure 14 As shown, on the mold rod 12, adopt two groups of grid lines to cross weave to form the network pipe 13, wherein the network pipe 13 includes the network pipe middle part 131 for forming the waist 3, and is used to form two disc structures (the first one) respectively. The network pipe end 132 of the disk-shaped structure 201 and the second disk-shaped structure 206).

[0101] It can be understood that the mold rod 12 in this embodiment has a shape that is thinner in the middle and thicker at the two ends, so cross-braiding grid lines on the mold rod 12 can form the network pipe end 132 with a larger diameter and the middle part of the network pipe with a smaller diameter. 131. In addition, because the surface of the middle part of the mold rod 12 is smooth, the diameter of the formed mesh pipe middle part 131 is consistent in the length direction.

[0102] Next, the mold stick 12 and the mesh pipe 13 sleeved on the mold sti...

Embodiment 2

[0115] The manufacturing method of the occluder provided by this embodiment is substantially the same as that of the first embodiment, except that the folds 11 are formed.

[0116] Such as Figure 21 As shown, in the present embodiment, the pleat forming die 15 is also used to make the middle part of the network tube form 131 into a pleat 11. The pleat forming die 15 also includes a fixed thick rod 151, a thin rod 152, and a movable thick rod 153; one end of the thin rod 152 is connected to the fixed One end of the thick rod 151 is fixedly connected to the disc surface, and the other end of the thin rod 152 is slidably passed through the movable thick rod 153 . The difference is that in this embodiment, the surface of the thin rod 152 in the pleat forming mold 15 is provided with several wavy or zigzag structures arranged in sequence along the axial direction, and the wavy or zigzag structures are arranged on the surface of the thin rod 152 in a ring shape.

[0117] When form...

Embodiment 3

[0121] The difference between the manufacturing method of the occluder provided in this embodiment and the first embodiment is that in this embodiment, the waist 3 with the folds 11 and the mesh frame 20 with the preset expanded shape are formed in one process step.

[0122] Specifically, in this embodiment, first, as Figure 23 On the mold bar, adopt the grid line cross braiding mode to form the network pipe 13 and heat setting, wherein, the network pipe 13 includes the network pipe middle part 131 for forming the waist 3, and is used to form two disc structures (the first disc structure) respectively. 201 and the network pipe end 132 of the second disk-shaped structure 206). The difference from the first embodiment is that in this embodiment, the mold stick is cylindrical with the same diameter, and the net tube 13 is formed by weaving on the mold stick 12, and the diameter of the middle part of the net tube and the end of the net tube are the same.

[0123] After that, if ...

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Abstract

The invention discloses a plugging device which comprises a first disc-shaped structure (201) with grids and a waist part (3) connected with the first disc-shaped structure (201). The first disc-shaped structure (201) comprises a first center area (202) corresponding to the cross section of the waist part (3) and a first edge area (203) surrounding the first center area (202); weaving lines (4) are woven in the grids of the first center area (202) in a penetrating mode. According to the plugging device, due to the fact that the density of the grid lines at least in the first center area is larger, the size of the contracted plugging device is decreased while the plugging performance can be guaranteed, delivering can be achieved through delivery pipe sheathes with the smaller inner diameter, and the plugging device can adapt to patients with the thinner blood vessels.

Description

technical field [0001] The present invention relates to a medical device and its manufacturing method, more specifically to an interventional treatment device and its manufacturing method which can be used to block defects in the heart or blood vessels. Background technique [0002] With the continuous development of interventional materials and devices and interventional cardiology, transcatheter interventional occluder minimally invasive treatment of atrial septal defect, ventricular septal defect, patent ductus arteriosus and patent foramen ovale and other congenital heart diseases has become an important method. Similarly, the use of interventional methods for intravascular occlusion is also a widely accepted treatment. [0003] Existing occluders are divided by structure, and mainly contain the following two types. Such as figure 1 As shown, the occluder includes a plug head 310 , a head 308 , a left disc 302 , a right disc 304 and a waist 306 . Wherein, the left dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/02A61B17/00
Inventor 刘香东张杰赵江浪
Owner LIFETECH SCI (SHENZHEN) CO LTD
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