CN103251432B - Antislip occluder for interatrial and ventricular septal defects - Google Patents

Antislip occluder for interatrial and ventricular septal defects Download PDF

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Publication number
CN103251432B
CN103251432B CN201210032768.8A CN201210032768A CN103251432B CN 103251432 B CN103251432 B CN 103251432B CN 201210032768 A CN201210032768 A CN 201210032768A CN 103251432 B CN103251432 B CN 103251432B
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China
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disk
disc
occluder
elastic network
stopper
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Expired - Fee Related
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CN201210032768.8A
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Chinese (zh)
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CN103251432A (en
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赵菁
阚全程
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First Affiliated Hospital of Zhengzhou University
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First Affiliated Hospital of Zhengzhou University
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Abstract

An antislip occluder for interatrial and ventricular septal defects comprises an elastic net and sealing membranes. Nickel-titanium alloy wires are woven, are molded and then are subjected to heat treatment to form the elastic net, the elastic net comprises a middle cylindrical concave waist, a hollow left disc and a hollow right disc, the left disc and the right disc are respectively connected with the left end and the right end of the concave waist, a sealing head capable of fixedly tucking heads of the alloy wires is welded in the outer center of the left side of the left disc, a connector capable of fixedly tucking the heads of the alloy wires is welded in the outer center of the right side of the right disc, a threaded hole is arranged in the middle of the connector, the two polyester sealing membranes are respectively adhered on the inner wall of the inner right side of the left disc and the inner wall of the inner left side of the right disc, and two annular bosses are coaxially arranged on an annular plane of the right side of the left disc. The antislip occluder has the advantages that the occluder can be effectively stopped from slipping on a septal wall after surgery on the basis that internal elastic stress on the occluder is not increased, and secondary blood leakage at the septal wall due to slipping of the occluder after the surgery can be prevented.

Description

The anti-skidding stopper of atrial ventricle's septal defect
Technical field
The present invention relates to a kind of medical occluder, particularly the anti-skidding stopper of a kind of atrial ventricle septal defect, it is mainly used in the defect of repairing congenital atrium, ventricular septum in intervene operation.
Background technology
Congenital heart disease atrial septal defect and ventricular septal defect are all common congenital heart disease, are large killers of the healthy particularly children's health of harm humans, this disease in China's year morbidity amount more than 100,000 people.The feature of its pathological changes of heart atrial septal defect is that spacer film between left atrium fails normally closed, and blood flows between left atrium and right atrium; The feature of its pathological changes of ventricular septal defect is that normally closed is failed at interval between left and right ventricles, and blood is flowed between left ventricle and right ventricle.Because the pressure of left atrium is higher than right atrium, so the part blood of left atrium flows to right atrium through atrial septal defect punishment.Due to the leakage of blood, the burden causing the right side to feel concerned about system increases, and causes right ventricular hypertrophy, pulmonary hypertension, arrhythmia and heart failure.Just need when heart septal defect causes blood leakage more to repair septal defect place.Therapist two kinds of diseases all adopted operating method in the past, and the method wound is large, patient is painful, the convalescence after Miles operation is long.In recent years, along with the development of interventional cardiac procedures, Minimally Interventional Therapy atrium, interventricular septal defect have become main development direction.
Existing multiple heart is used to treat congenital cardiac septal defect every defect stopper at present, the main part of stopper is one mostly to be had memory preset profiles and can be shrunk to the metallic elastic net of strip, the diaphragm seal that one deck intercepts blood flow is provided with in elastic network(s), return after stopper is opened and can recover its preset profiles, becoming a centre is cylindrical eel-like figure, and respectively there is the I-shaped structure of a disk at eel-like figure two ends.The advantage of Occluder heart septal defect is utilized to be that otch is little, only in femoral artery, the puncture of femoral vein place, under the supervision of X-ray and color ultrasound, stopper is implanted the defect of ventricle or atrial septum through conduit, slowly open stopper after determining defect, the eel-like figure of stopper is placed on original defect place, the spaced walls of defect is clamped by left and right two disks of stopper, defect is closed, reaches the object of clinical cure.But because the problem of stopper self structure and the preoperative side seal that selects block up type number inappropriate problem, Post operation often there will be the situation that stopper slide displacement regenerates blood leakage.Analyze its reason and be roughly two aspects, one is that the elastic clamping power of stopper self is not enough, fails self to be clamped in firmly in the spaced walls of defect, when heart constantly shrink and extensional motion time, stopper is extruded generation slide displacement; Two is problems of stopper structure, and the card being responsible for two disks of clamping defect spaced walls is too level and smooth, easily produces slide displacement.But, we know if the clamping force of two disks is too large on stopper, inherently affect the blood circulation of spaced walls local, this place is organized downright bad because of ischemia, therefore in the structure of stopper, only carry out improving the only way being only and overcoming its easy generation and slide.
Summary of the invention
The object of the invention is to the defect and the deficiency that make up prior art, there is provided a kind of atrial ventricle septal defect anti-skidding stopper, it can be clamped in the spaced walls of heart defect firmly by less clamping force, not easily produces leakage, and has good bio-compatibility.
For achieving the above object, the technical solution used in the present invention is as follows: the anti-skidding stopper of a kind of atrial ventricle septal defect, comprise elastic network(s), diaphragm seal, end socket, joint, wherein elastic network(s) forms through the compressing and heat treatment of mould with after nitinol alloy wire braiding, the B alloy wire forming elastic network(s) is interlaced, elastic network(s) comprises the left disk of hollow shape and right disk that a recessed waist of cylindrical shape in the middle part of it and two ends, recessed waist left and right respectively connected, the diameter of left disk and right disk is greater than the diameter 5 ~ 20 millimeters of recessed waist, its profile of whole elastic network(s) is I shape, the silk head forming several B alloy wires of elastic network(s) collects in the center of left disk left surface and right disk right flank respectively, left disk left hand external center is welded with one and draws the silk head of B alloy wire in fixing end socket, right disk right hand external center is welded with one and draws the silk head of B alloy wire in fixing joint, one is had for the screw of the seal wire that spins in the middle part of joint, above-mentioned end socket and joint are made by Nitinol, one deck polyester sealant film is respectively bonded with on left disk inner right side inwall He on right disk inside left inwall, coaxially in the right circular plane of left disk be provided with twice annular boss, the spacing of twice annular boss is 4 ~ 7 millimeters, the cross section of annular boss is circular arc, triangle, trapezoidal.
This stopper has good shape memory function, and when axial tractive end socket and joint, stopper can be deformed into strip, can restore to the original state immediately after external force is removed.
The present invention compared with prior art beneficial effect is: plugging effect is good, on the basis not increasing stopper inner elastomeric stress, twice annular boss effectively can stop that stopper is postoperative to slide in spaced walls, can avoid postoperatively again producing spaced walls place blood leakage because stopper slides.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is right view of the present invention shown in Fig. 1.
Fig. 3 is longitudinal sectional drawing of the present invention shown in Fig. 1.
In figure, 1. elastic network(s), 2. recessed waist, 3. left disk, 4. right disk, 5. end socket, 6. joint, 7. annular boss, 8. screw, 9. diaphragm seal.
Detailed description of the invention
In figure, the anti-skidding stopper of a kind of atrial ventricle's septal defect, comprise elastic network(s) 1, diaphragm seal 9, end socket 5, joint 6, wherein elastic network(s) 1 is that through mould, compressing and heat treatment forms with after the braiding of 50 ~ 100 nitinol alloy wires, the B alloy wire forming elastic network(s) 1 is interlaced, elastic network(s) 1 comprises the left disk of hollow shape 3 and right disk 4 that a recessed waist of cylindrical shape 2 in the middle part of it and recessed waist about 2 two ends respectively connected, the diameter of left disk 3 and right disk 4 is greater than the diameter 5 ~ 20 millimeters of recessed waist 2, whole its profile of elastic network(s) 1 is I shape, the silk head forming several B alloy wires of elastic network(s) 1 collects in the center of left disk 3 left surface and right disk 4 right flank respectively, left disk 3 left hand external center is welded with one and draws the silk head of B alloy wire in fixing end socket 5, right disk 4 right hand external center is welded with one and draws the silk head of B alloy wire in fixing joint 6, one is had for the screw 8 of the seal wire that spins in the middle part of joint 6, above-mentioned end socket 5 is made by Nitinol with joint 6, one deck polyester sealant film 9 is respectively bonded with on left disk 3 inner right side inwall He on right disk 4 inside left inwall, coaxially in the right circular plane of left disk 3 be provided with twice annular boss 7, the spacing of twice annular boss 7 is 4 ~ 7 millimeters, the cross section of annular boss 7 can make circular arc, triangle, trapezoidal.This stopper has good shape memory function, and when axial tractive end socket 5 and joint 6, stopper can be deformed into strip, can restore to the original state immediately after external force is removed.

Claims (3)

1. the anti-skidding stopper of atrial ventricle's septal defect, it comprises elastic network(s), diaphragm seal, end socket, joint, elastic network(s) forms through the compressing and heat treatment of mould with after nitinol alloy wire braiding, elastic network(s) comprises the left disk of hollow shape and right disk that a recessed waist of cylindrical shape in the middle part of it and two ends, recessed waist left and right respectively connected, it is characterized in that: the diameter of left disk and right disk is greater than the diameter 5 ~ 20 millimeters of recessed waist, its profile of whole elastic network(s) is I shape, the silk head forming several B alloy wires of elastic network(s) collects in the center of left disk left surface and right disk right flank respectively, left disk left hand external center is welded with one and draws the silk head of B alloy wire in fixing end socket, right disk right hand external center is welded with one and draws the silk head of B alloy wire in fixing joint, one is had for the screw of the seal wire that spins in the middle part of joint, one deck polyester sealant film is respectively bonded with on left disk inner right side inwall He on right disk inside left inwall, coaxially in the right circular plane of left disk be provided with twice annular boss.
2. the anti-skidding stopper of atrial ventricle according to claim 1 septal defect, is characterized in that: the cross section of described annular boss is circular arc, triangle, trapezoidal.
3. the anti-skidding stopper of atrial ventricle according to claim 1 and 2 septal defect, is characterized in that: the spacing of described twice annular boss is 4 ~ 7 millimeters.
CN201210032768.8A 2012-02-15 2012-02-15 Antislip occluder for interatrial and ventricular septal defects Expired - Fee Related CN103251432B (en)

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CN201210032768.8A CN103251432B (en) 2012-02-15 2012-02-15 Antislip occluder for interatrial and ventricular septal defects

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Application Number Priority Date Filing Date Title
CN201210032768.8A CN103251432B (en) 2012-02-15 2012-02-15 Antislip occluder for interatrial and ventricular septal defects

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CN103251432B true CN103251432B (en) 2015-07-01

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108143444B (en) * 2016-12-02 2020-05-22 潘湘斌 Ventricular septal defect plugging device
CN106510777A (en) * 2016-12-09 2017-03-22 上海形状记忆合金材料有限公司 Atrial shunt
CN109925096A (en) * 2019-04-29 2019-06-25 上海方维医疗科技有限公司 For reducing the device of annulus of mitral valve opening area
CN110680415A (en) * 2019-09-20 2020-01-14 珠海崇健医疗科技有限公司 Coated plugging device
CN111728651A (en) * 2020-07-02 2020-10-02 南昌大学第二附属医院 Plugging device for perforation of indoor space and using method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4836204A (en) * 1987-07-06 1989-06-06 Landymore Roderick W Method for effecting closure of a perforation in the septum of the heart
US5192301A (en) * 1989-01-17 1993-03-09 Nippon Zeon Co., Ltd. Closing plug of a defect for medical use and a closing plug device utilizing it
CN101234041A (en) * 2008-01-31 2008-08-06 上海交通大学 Atrial septal defect plugging device knitted by degradable material
CN201414854Y (en) * 2009-06-30 2010-03-03 赵菁 Easy-reclaimed changeable stress ventricular septal defect occluder
CN101773418A (en) * 2009-01-12 2010-07-14 赵菁 Cardiac ventricular septal defect closer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4836204A (en) * 1987-07-06 1989-06-06 Landymore Roderick W Method for effecting closure of a perforation in the septum of the heart
US5192301A (en) * 1989-01-17 1993-03-09 Nippon Zeon Co., Ltd. Closing plug of a defect for medical use and a closing plug device utilizing it
CN101234041A (en) * 2008-01-31 2008-08-06 上海交通大学 Atrial septal defect plugging device knitted by degradable material
CN101773418A (en) * 2009-01-12 2010-07-14 赵菁 Cardiac ventricular septal defect closer
CN201414854Y (en) * 2009-06-30 2010-03-03 赵菁 Easy-reclaimed changeable stress ventricular septal defect occluder

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