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Plugging device

A technology of blocking device and sealing part, which is applied in the fields of medical science, surgery, ligation, etc., can solve problems such as affecting the blocking performance and adversely affecting the stability of the left atrial appendage occluder.

Active Publication Date: 2021-05-25
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, medical research has found that the left atrial appendage can vibrate up and down with the beating of the heart, and the blood in the left atrial appendage also sloshes in the left atrial appendage, which is not conducive to the fixation of the left atrial appendage occluder in the left atrial appendage. Stability, which in turn affects the plugging performance

Method used

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Experimental program
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Embodiment approach 1

[0042] Such as figure 1 As shown, the occlusion device 100 of this embodiment includes a fixing part 10 and a sealing part 20 connected to the fixing part 10 . The sealing part 20 and the fixing part 10 are arranged at intervals along the axial direction of the occluding device 100 . The sealing part 20 is located at the proximal end of the occluding device 100 , and the fixing part 10 is located at the distal end of the occluding device 100 . The occlusion device 100 has a compressed state contained within the sheath for ease of delivery, and protrudes from the distal end of the sheath and self-expands and deploys as figure 1 The expanded state shown. The shape and figure 1 exactly the same or roughly the same. In other implementations, for example, when used for atrial septal defect occlusion, the sealing part 20 and the fixing part 10 can abut against each other after being released, and the middle part is connected by a connecting piece 30, so as to fix the occluding d...

Embodiment approach 2

[0057] to combine figure 1 , image 3 and Figure 4 As shown, the overall structure of the occlusion device 100 of this embodiment is basically the same as that of the first embodiment, and also includes a fixed part 10 and a sealing part 20 connected to each other, and a drug supply part 40 is formed on the support rod 12 of the fixed part 10 . The difference from the first embodiment is that at least part of the surface of the support rod 12 in this embodiment is connected with a plurality of protrusions 123, and after the product is formed, the gap between two adjacent protrusions 123 is covered with at least For the drug 50 that promotes platelet aggregation, the protrusion 123 is covered with a first film in a compressed state, and the portion of the support rod 12 provided with the protrusion 123 constitutes the drug supply member 40 . Wherein, the function of the first thin film in this embodiment is the same as that in the first embodiment, and the material may be t...

Embodiment approach 3

[0061] In addition to using the drug supply part 40 as a part of the fixing part 10 in the first and second embodiments above, the drug supply part 40 may also be provided at other positions of the occlusion device 100 in the cavity of the left atrial appendage. to combine figure 1 and Figure 5 As shown, the overall structure of the occlusion device 100 of this embodiment is basically the same as that of Embodiment 1, the difference is that the drug supply part 40 of this embodiment is arranged between the fixing part 10 and the sealing part 20, and the drug supply part 40 includes The first housing 41, the first housing 41 is a hollow tubular structure with openings at both ends, the inside of the first housing 41 forms a drug storage cavity, and the drug storage cavity is provided with at least medicine for promoting platelet aggregation, the first shell The side wall of the body 41 is provided with a plurality of release holes 411 and at least one injection hole (not show...

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Abstract

The present invention discloses a plugging device which comprises a sealing part relatively located at the near end, a fixing part connected with the sealing part and relatively located at the far end and a medicine supply part, the medicine supply part is at least arranged in the middle or at the far end of the plugging device, and the medicine supply part is at least provided with a first kind of medicine used for promoting platelet aggregation in blood. When the first type of medicine is released into the cavity of the in-vivo tissue from the medicine supply part, platelets in blood in the cavity are promoted to be gathered at least at the position where the fixing part makes contact with the cavity wall of the cavity. The medicine supply part is arranged in the middle or at the far end of the plugging device, and after the plugging device is implanted into a cavity of in-vivo tissue, the first medicine used for promoting platelet aggregation in the medicine supply part is released into a cavity of a left auricle; the platelets in blood in the cavity are gathered at the contact position of the fixing part and the cavity wall of the left auricle, and the fixing part and the cavity wall of the left auricle are fixedly connected together, so that the stability of the plugging device is improved.

Description

technical field [0001] The invention belongs to the technical field of interventional medical devices, and in particular relates to a blocking device. Background technique [0002] The most important complication of atrial fibrillation is stroke, and the annual death rate due to atrial fibrillation is about 1.9-18.2%. Studies have shown that about 20% of strokes are caused by atrial fibrillation, and thrombus is easy to form near the left atrium. After the thrombus flows into the cerebral blood vessels, embolism occurs, leading to stroke, and the left atrial appendage is the main place for these thrombus formation. It has been reported in the literature that effective occlusion of the left atrial appendage can effectively prevent the formation of thrombus near the left atrium. As a special long-term implantable medical device for left atrial appendage occlusion, the left atrial appendage occluder needs to have excellent occlusion and sealing performance. [0003] As a spec...

Claims

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Application Information

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IPC IPC(8): A61B17/12
CPCA61B17/12122Y02A50/30
Inventor 李安宁朱万诚刘建勇葛洋
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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