CN2525962Y - Blocking apparatus for heart space defect - Google Patents

Blocking apparatus for heart space defect Download PDF

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Publication number
CN2525962Y
CN2525962Y CN 02215364 CN02215364U CN2525962Y CN 2525962 Y CN2525962 Y CN 2525962Y CN 02215364 CN02215364 CN 02215364 CN 02215364 U CN02215364 U CN 02215364U CN 2525962 Y CN2525962 Y CN 2525962Y
Authority
CN
China
Prior art keywords
top plug
conduit
net frame
plug conduit
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 02215364
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Chinese (zh)
Inventor
王永武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tongji University
Original Assignee
Tongji University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tongji University filed Critical Tongji University
Priority to CN 02215364 priority Critical patent/CN2525962Y/en
Application granted granted Critical
Publication of CN2525962Y publication Critical patent/CN2525962Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a blocking apparatus for heart space defect, comprising an expansion conduit, a top plug conduit sleeved in the expansion conduit, a guide steel wire penetrating through the top plug conduit and a net frame installed at the front end of the top plug conduit, wherein, the net frame is a double dish-shaped self expandable net frame weaving by nitinol memory alloy steel wires. The net frame is internally provided with an elastic foam sheet having the function of a valve. The central section of the elastic foam sheet is threaded at a relatively thin part of the top plug conduit, and a relatively thick part of the top plug conduit can fix or push the net frame. After self expansion, the net frame forms a double dish-shaped elastic structure which can be firmly fixed in the spot of heart space defect. The blocking apparatus disclosed in the utility model cures atrioventricular space defect with a method of intervention. And the blocking apparatus for heart space defect has the advantages of safe and simple operation, reliable curative effect and lower cost than operation.

Description

The heart septal defect sealer
Technical field
This utility model relates to medical apparatus and instruments, relates to for the congenital heart disease intervention closed treating device of atrial septal defect (ASD), ventricular septal defect (VSD) for example, particularly a kind of heart septal defect sealer.
Background technology
Atrial septal defect (ASD), ventricular septal defect (VSD) are higher in the congenital heart disease sickness rate, need open and carry out repairing operation under the breast extracorporeal circulation, and it has a big risk, and recover slow, and expense is higher.At present for the treatment of atrial septal defect (ASD), ventricular septal defect (VSD), open chest surgery treatment under the main both at home and abroad still extracorporeal circulation, the stifled device that closes of intervention that atrial septal defect (ASD) has abroad been arranged, the stifled atrial septal defect (ASD) of closing of main application mushroom-shaped closing stopper (Amplatzer), but it uses limitation, generally is only applicable to oval foramen type atrial septal defect, and complicated operation, still in clinical trial, for Chinese patient, it costs an arm and a leg.
Summary of the invention
The purpose of this utility model provides a kind of improved heart septal defect sealer, and it can non-ly be opened breast and block up and close, and open chest surgery, the risk that has solved prior art is big, expense is than problems such as height.
The technical solution of the utility model is as follows:
A kind of heart septal defect sealer, it comprises a dilating catheter, one in dilating catheter the top plug conduit of suit, one through the guide wire that pushes up in the plug conduit, and the network that is installed in top plug catheter proximal end, described network is the double-disc shape self-inflated network that is compiled into by the Ultimum Ti steel wire, be lined with the flexible foam sheet of tool valve effect in the network, its cross section central authorities place the thin position of top plug conduit, and network is fixed or pushed in the thicker part position of top plug conduit.
This utility model utilizes the Ultimum Ti steel wire to be compiled into the double-disc shape self-expandable stent, the foam plastics valve that liner is made by polyvinyl formal, discharge after utilizing support to be transported to defect, support can expand voluntarily and form the double-disc shape structure, the conversion temperature of support is 33 ℃, surpass 33 ℃ and can reach good swelling state, its expansion back becomes the elastic support of double-disc shape to fixedly secure in damaged.The elastic reaction of medical plastic valve is convenient to withdrawing from of carrier, has simplified to block up and has closed device, and its operation is more simple.Support inner foam sample network structure easily makes platelet, cellulose and blood coagulation substance be detained, and forms thrombosis, and netted spline structure is easy to formation, growth, the covering of angiogenesis endotheliocyte, reaches the purpose of closed permanent.Adopt heart septal defect sealer of the present utility model, its risk is little, and curative effect is reliable, expense is starkly lower than operation.
Major advantage of the present utility model is as follows:
1. easy and simple to handle.Utilize this device can be discharged into damaged stifled the closing of between-line spacing automatically, can be without balloon expandable from the swollen double-disc shape structure that becomes, it is simple to operate, has shortened operating time effectively, has avoided the stopper displacement or comes off.
2. applied widely.This stifled preceding diameter 2~3mm of device expansion that closes, little to blood vessel injury, expansion back internal diameter can reach 20~40mm, can be fit to the damaged of different sizes.
3. endothelialization is fast.Memory alloy stent after the release can fixedly secure in damaged, support inner foam sample network structure easily makes platelet, cellulose and blood coagulation substance be detained, form thrombosis, and metallic struts can produce a kind of " embedding " effect to corresponding lumen wall, is easy to formation, growth, the covering of angiogenesis endotheliocyte.
4. cost is low.Because each prong material and conveyer device are domestic material, produce by domestic manufacturer, therefore reduced cost effectively, this device price only is 6000~7000 yuan, and abroad stifledly closes the device price and be about 30000~50000 yuan, this device is easy to popularization.
Description of drawings
Fig. 1 is the structural representation of a kind of heart septal defect sealer of the present utility model.
User mode figure when Fig. 2 is dish face of Fig. 1 sealer release.
Fig. 3 is the user mode figure after Fig. 1 sealer discharges two dish-shaped self-expandable stents.
Fig. 4 is the structural representation that Fig. 1 sealer has two dish-shaped networks of foamed sheet.
The specific embodiment
Referring to Fig. 1 to Fig. 4, a kind of heart septal defect sealer of the present utility model comprises a dilating catheter 2, one in dilating catheter 2 guide wire 3 of plug conduit 5, in top in the top plug conduit 5 of suit, and the network that is installed in top plug conduit 2 front ends.
Network is a kind of double-disc shape self-inflated network 1 that is compiled into by the Ultimum Ti steel wire, has good plasticity when temperature is 4 ℃, when temperature inversion is 33 ℃ or when above, network 1 expands at once and reverts to original state.Be lined with the flexible foam sheet 4 of tool valve effect in the network 1, this plastic sheet 4 is medical foam plastic sheets, has good compression, and high resilience and foam are even, and its cross section central authorities can be by the top plug conduit 5 of different-diameter.
The carefully position 51 of top plug conduit 5 is set in foamed sheet 4 central authorities in the network 1, and effect fixing or propelling movement network 1 is played in the thicker part position 52 of top plug conduit 5.Top plug conduit 5 passes the centre of dilating catheter 2 and flexibly connects with it.Guide wire 3 is in dilating catheter 2 and pass the centre of top plug conduit 5.When this sealer arrived heart septal defect central authorities, the afterbody of fixing top plug conduit 5 gently moved dilating catheter 2 backward.
After network 1 is transported to the heart septal defect position by bracket conveyer, form two dish-shaped elastic constructions through discharging to expand automatically, can be securely fixed in the two ends of heart septal defect, not be subjected to the impact of blood flow and be shifted, thereby obtain the good stifled effect of closing.Network 1 expands voluntarily and expands the back internal diameter and reach 20~40mm, is fit to the atrial septal defect and the ventricular septal defects of different sizes.
Double-disc shape self-inflated network 1 liner can play the valve effect that stops blood flow with the compression or the expansion of support with medical foam plastic sheet 4.The netted spline structure of foamed sheet 4 easily makes thrombosthenin and blood coagulation sample material be detained, and forms thrombosis and is easy to formation, growth, the covering of vascular endothelial cell, reaches the effect of closed permanent.The end band film leakproof blood device of dilating catheter 2.
When using this utility model, through skin puncture femoral vein, insert band film dilating catheter, send into the stomidium right heart catheter and enter left atrium through postcava, right atrium, atrial septal defect, insert the fiber guide wire after the pressure measurement in the right heart catheter, to left superior pul monary vein, x-ray fluoroscopy lower edge guide wire send into different-diameter foley's tube, send into the heart septal defect place, full sacculus is to measure damaged diameter.Extract the full liquid of sacculus out, withdraw from foley's tube, select the heart septal defect sealer of the present utility model of appropriate size, send into the heart septal defect place along guide wire, fixing top plug conduit, slowly withdraw from dilating catheter, make left room face discharge a dish face, then with whole sealer to the right the room face withdraw from, make a dish face having discharged left atrium face near septal defect, continue aforesaid operations, make another dish face be released into the right atrium face, this moment, the support of two dishes was securely fixed in damaged left atrium face, through damaged stifled the closing fully of Doppler's heart ultrasonic examination confirmation, fixing dilating catheter then, guiding top plug conduit retreats in the dilating catheter together with guide wire and retreats to external.Double-disc shape self-inflated network and foamed sheet are stayed the heart septal defect place, to realize stifled closing.
Sealer of the present utility model is easy and simple to handle, safety, reliable, and curative effect is sure, is fit to most of hospitals and uses.

Claims (1)

1. heart septal defect sealer, it comprises a dilating catheter, one in dilating catheter the top plug conduit of suit, one through the guide wire that pushes up in the plug conduit, and the network that is installed in top plug catheter proximal end, it is characterized in that, described network is the double-disc shape self-inflated network that is compiled into by the Ultimum Ti steel wire, be lined with the flexible foam sheet of tool valve effect in the network, its cross section central authorities place the thin position of top plug conduit, and network is fixed or pushed in the thicker part position of top plug conduit.
CN 02215364 2002-01-25 2002-01-25 Blocking apparatus for heart space defect Expired - Fee Related CN2525962Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02215364 CN2525962Y (en) 2002-01-25 2002-01-25 Blocking apparatus for heart space defect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02215364 CN2525962Y (en) 2002-01-25 2002-01-25 Blocking apparatus for heart space defect

Publications (1)

Publication Number Publication Date
CN2525962Y true CN2525962Y (en) 2002-12-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02215364 Expired - Fee Related CN2525962Y (en) 2002-01-25 2002-01-25 Blocking apparatus for heart space defect

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Country Link
CN (1) CN2525962Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101049269B (en) * 2006-04-03 2010-12-29 孟坚 Medical use obstruction appliance
CN104039245A (en) * 2011-08-19 2014-09-10 因赛普特斯医学有限责任公司 Expandable occlusion device and methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101049269B (en) * 2006-04-03 2010-12-29 孟坚 Medical use obstruction appliance
CN104039245A (en) * 2011-08-19 2014-09-10 因赛普特斯医学有限责任公司 Expandable occlusion device and methods

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20021218