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Rotary Atherectomy Device

A technology of grinding head and rod, applied in the field of medical devices, can solve problems such as interventional treatment of heart defects

Active Publication Date: 2014-10-01
BEIJING MED ZENITH MEDICAL SCI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention includes providing a kind of medical instrument, is used for solving the problem of interventional treatment of heart defect, is especially used for solving the problem of smaller diameter (wherein ASD diameter<10mm, PFO diameter≤4mm, VSD diameter mm≤3mm, PDA diameter≤ 3mm) congenital heart defect interventional therapy

Method used

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  • Rotary Atherectomy Device
  • Rotary Atherectomy Device
  • Rotary Atherectomy Device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0056] 1. Select a dense stainless steel tension spring with a wire thickness of 0.1mm and an inner diameter of 0.25mm, and cut the length to 40mm. The inner hole penetrates a superelastic nickel-titanium wire with a diameter of 0.2 mm, and cuts 40 mm. The two ends of the nickel-titanium wire and the spring are respectively welded together with a laser, the nickel-titanium wire endows the spring with a certain degree of elasticity, and at the same time prevents the spring from being stretched. Seeker head 101 is processed, such as figure 2 As shown, the number 201 is a spring, and the number 202 is a nickel-titanium wire as a core wire.

[0057] Select a nickel-titanium tube with an outer diameter of 1.0mm and a wall thickness of 0.1mm, and cut it into a triple helix shape by laser, and make a sawtooth shape on the side of the atherectomy rod at the same time. After heat treatment and finalization, it can be processed into a drum-shaped grinding head 400, such as Figure 4...

example 2

[0061] The introducer and delivery rod were prepared as in Example 1. Select a nickel-titanium tube with an outer diameter of 2.0 mm and a wall thickness of 0.1 mm, laser engrave the pattern of the grinding head, and heat-treat and shape the grinding head 500 into a hub shape, such as Figure 5 shown. The diameter of the grinding surface 511 in the middle is 3.0 mm, and the length is 3.0 mm; the diameter of the locking wheels 512 at both ends is 6.0 mm. The three parts are cured and bonded with UV glue. This rotary atherectomy device can be used for the treatment of ASD, VSD and PFO with small diameter. The rotary atherectomy device enters the heart through the catheter, and the atherectomy surface is placed in the defect. The two clamping wheels are respectively located on both sides of ASD, VSD and PFO. The rotary atherectomy device stimulates tissue proliferation and promotes ASD, VSD and PFO. PFOs heal themselves. The atherectomy rod 501 on the middle atherectomy surfa...

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Abstract

The invention discloses a rotary rubbing device, which comprises a rotary rubbing head and a transfer rod, wherein the rotary rubbing head is capable of rubbing tissues by means of rotating or push-pull movement, the transfer rod is capable of transferring rotating or push-pull movement to the rotary rubbing head, and a near end of the rotary rubbing head is connected with a far end of the transfer rod. The rotary rubbing device can be used for percutaneous puncture interventional therapy to promote self-healing of congenital heart defects with small diameters. The rotary rubbing device is used for rotatably rubbing a heart defect inner membrane, properly stimulating the tissues of the heart defect inner membrane with a trauma, and realizing cell growth and tissue regeneration and repair of injured portions to promote self-healing of the heart defects.

Description

technical field [0001] The invention relates to a medical device, in particular to an interventional treatment device for heart defect. The device can be used for percutaneous puncture interventional therapy to promote the self-healing of congenital heart defects with small diameters. The device is used to abrade the heart defect endometrium, causing moderate trauma stimulation to the heart defect endometrium tissue, cell growth in the damaged part, tissue regeneration and repair, and achieving the purpose of promoting the self-healing of the heart defect. Background technique [0002] Every year, more than 150,000 children with congenital heart disease are born in my country. Among them, atrial septal defect (ASD), ventricular septal defect (VSD) and patent ductus arteriosus (PDA) are the three most common congenital heart diseases, accounting for about 40% of congenital heart diseases. The atrial septal patent foramen ovale (PFO) is more common, accounting for about 25% ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/00
Inventor 侯传举孟坚可大年周庆亮李金山李芳
Owner BEIJING MED ZENITH MEDICAL SCI CORP LTD
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