CN203953729U - A kind of patent ductus arteriosus stopper - Google Patents
A kind of patent ductus arteriosus stopper Download PDFInfo
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- CN203953729U CN203953729U CN201420272979.3U CN201420272979U CN203953729U CN 203953729 U CN203953729 U CN 203953729U CN 201420272979 U CN201420272979 U CN 201420272979U CN 203953729 U CN203953729 U CN 203953729U
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Abstract
A patent ductus arteriosus stopper, along axis direction, knitted body is felt concerned about system and is felt concerned about right dish, the first necking down, the first cylinder, the second necking down, the second cylinder and the left dish that system is followed successively by coaxial setting left from the right side; Two cylinders are the cylindric of the hollow of diameter between 4 millimeters to 20 millimeters, and the diameter of two necking downs is significantly less than the diameter of two cylinders, and the thickness of two necking downs is all and is less than or equal to 1 millimeter; Right dish be outer edge than the circle of large 1 millimeter of the first cylindrical shell, left dish be outer edge than the circle of large 3.5 millimeters of the second cylinder, closing in place of knitted body lays respectively at the centre of two dishes, and a threaded column is fixed in closing in place on right dish; The thin film of two expansion is set in the second cylinder interior cavity.In this stopper, necking section and cylindrical portions diameter have obvious difference, can realize micro-deformation in the longitudinal direction, and what make that stopper can be firm is fixed in ductus arteriosus, forms the power of a riveted joint.
Description
Technical field
This utility model relates to for patent ductus arteriosus patient carries out the stopper field of using in shutoff operation, especially a kind of patent ductus arteriosus stopper that is applicable to long tube type PDA.
Background technology
Patent ductus arteriosus is one of In Congenital Heart Disease common type, accounts for 15% of congenital heart disease morbidity sum.The passive opening of period of fetus ductus arteriosus is sanguimotor important channel, after birth, about 15 hours both generating function close, 80% closes in raw latter 3 months anatomical.By 1 year, should close completely anatomically.If continuous openness, and produce pathology, physiological change, claims patent ductus arteriosus..
Divide by type, comprise cast: catheter length is many in 1cm left and right, diameter thickness is not etc.; Funnel type: length is similar to cast, but its nearly aorta end is thick, to pulmonary artery end, narrows down gradually; Window type: pulmonary artery and aorta are close to, is a duct between the two, and diameter is often larger.
Having 10% patient to need operative treatment, adopt interventional therapy to select turn, mushroom cap etc. to close ductus arteriosus, shown in accompanying drawing 8 is exactly wherein a kind of structure chart of mushroom cap stopper.
Wherein, mushroom cap has cylindrical shell and a plug of a taper, and above-mentioned mushroom cap is by patent ductus arteriosus section is strutted, and utilizes adding of the ductus arteriosus power of holding to realize fixing.
There is the potential safety hazard coming off in the stopper of said structure.
Utility model content
In order to solve the deficiencies in the prior art, this utility model provides a kind of patent ductus arteriosus stopper, for the shutoff at patent ductus arteriosus place, it is tightr to fit in that especially a kind of length can regulate voluntarily, to be applicable to long tube type patent ductus arteriosus disease stopper and ductus arteriosus joint place.
This utility model solves the technical scheme that its technical problem adopts:
A patent ductus arteriosus stopper, comprises knitted body and thin film, and described knitted body is one-time formed through braiding and setting process with thin tinsel, and described thin film is medical macromolecule membrane, it is characterized in that,
Along axis direction, described knitted body is felt concerned about system and is felt concerned about right dish, the first necking down, the first cylinder, the second necking down, the second cylinder and the left dish that system is followed successively by coaxial setting left from the right side; And above-mentioned seamlessly transitting between adjacent part between two and continued presence;
Described the first cylinder and the second cylinder are the cylindric of the hollow of diameter between 4 millimeters to 20 millimeters, and the diameter of two cylinders is identical, on thickness direction, the thickness of described the first cylinder is between 2 millimeters to 4 millimeters, and the thickness of described the second cylinder is between 3 millimeters to 5 millimeters;
The diameter of described the first necking down and the second necking down is significantly less than the diameter of the first cylinder and the second cylinder, and on thickness direction, the thickness of two necking downs is all and is less than or equal to 1 millimeter;
Described right dish be outer edge than the circle of large 1 millimeter of the first cylinder, described left dish be outer edge than the circle of large 3.5 millimeters of the second cylinder,
Closing in place of described knitted body lays respectively at the centre of described right dish, left dish, and closing in place on right dish is fixed one by the mode of extrusion modling or welding fabrication and had externally threaded threaded column;
The thin film of two expansion is at least set in described the second cylinder interior cavity, and the surrounding of each thin film and knitted body are sewed up and are connected to form one.
Further, described thin film is high-molecular polyvinyl alcohol thin film or macromolecule silica gel thin film conventional in medical treatment.
Further, described thin film should launch fully, flatten, and does not allow to occur the phenomenon of stack, fold.
Further, closing on described right dish is what cave inward, and described threaded column is trapped in the inside of whole stopper in being, described threaded column is the alloy body identical with knitted body material, with guarantee outer surface be one level and smooth, reduce thrombotic probability.
Further, the tinsel that described knitted body is used has the alloy threadlet of memory function for nitinol or other.
Further, the diameter of described the first necking down and the second necking down is less than or equal to 1 millimeter.
The beneficial effects of the utility model are:
Rational in infrastructure, necking section and cylindrical portions diameter have obvious difference, can realize micro-deformation in the longitudinal direction, and what make that stopper can be firm is fixed in ductus arteriosus, forms the power of a riveted joint.For long tube type patent ductus arteriosus, elongation that can be suitable in length, has the wider scope of application simultaneously, meets in operation due to the poor problem of the improper plugging effect bringing of stopper length.
Accompanying drawing explanation
Fig. 1 is the entity profile of the skeleton of utility model stopper.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is Fig. 1 half sectional view.
Fig. 4 is the schematic diagram of knitted body.
Fig. 5 is the expanded view of knitted body.
Fig. 6 is the schematic diagram of patent ductus arteriosus disease.
Fig. 7 is the shutoff situation schematic diagram of this stopper in operation.
Fig. 8 is the schematic diagram of traditional stopper.
In figure: 1 stopper, 11 right dishes, 12 first necking downs, 13 first cylinders, 14 second necking downs, 15 second cylinders, 16 left dishes, 2 ductus arteriosuss, 31 the first film sheets, 32 second diaphragms, 4 sew up, and 5 close up, 51 threaded column.
The specific embodiment
As shown in Figures 1 to 7, this utility model relates to a kind of patent ductus arteriosus stopper, and this stopper is comprised of filament, impermeable thin film and retaining element.
For existing defect, protection main body of the present utility model is as follows:
What develop is a kind of medical element that carries out shutoff for patent ductus arteriosus section.This element makes shutoff process be full of flexibility by the damage of minimum level and the interventional method of minimum level, the physiological structure of analysing that more meets valve on this component structure, and wound is down to bottom line, and make the position, accurate arrival closure part that this element can be complete, implement shutoff.
Its basic principle is, stopper 1 is compressed and imported to and needed the ductus arteriosus of shutoff 2 patent sections by conduit, then stopper is derived in conduit, because stopper has shape memory function, can restore to the original state, be just in time stuck in ductus arteriosus, finally conduit and seal wire are extracted out, and this stopper can regulate according to the suitable font of the length of ductus arteriosus 2, complete fixing, as shown in Figure 7.
The stopper that this utility model provides is simultaneously a kind of stopper that is specifically designed to treatment patent ductus arteriosus disease, is applicable to guide by conduit the stopper of controlling operation.
The main body of this stopper mainly with thin tinsel through weaving molding, by 72 one metal wire braidings, formed, it is a knitted body, the structural style (as Fig. 4) that can adopt two ends to close up, also the pattern that can select one end to close up, and the integral body forming by special setting process.Here, above-mentioned tinsel, preferentially selects, and for example nitinol or other are made the alloy material with memory function, have both had certain flexibility, can remove under the situation of external force again, automatically return to original state.For meeting the requirement of being with operation, should there is sufficient flexibility.The alloy using due to this stopper has memory function, stopper in importing process in compression state, and import smoothly, after reaching precalculated position, discharge, after release, can be returned to timely predetermined shape.
In feeling concerned about system, aorta is to feel concerned about a part for system with a left side, pulmonary artery is the part that system is felt concerned about on the right side, and this stopper (PDA) is by the aorta medical element that stopped pipe does not carry out shutoff, so according to the direction definition of feeling concerned about system, along axis direction, described knitted body is felt concerned about system (pulmonary artery one side) and is felt concerned about right dish 11, the first necking down 12, the first cylinder 13, the second necking down 14, the second cylinder 15 and the left dish 16 that system (aorta one side) is followed successively by coaxial setting left from the right side, as shown in Figure 1; And above-mentioned seamlessly transitting between adjacent part between two and continued presence, according to shaper and setting process, has micro-fillet in turning point between two.Above-mentioned various piece forms by a setting process, and what in structure, be braiding is netted, and does not have discontinuous or sharp-pointed or uneven shape, should be and seamlessly transits.
The first cylinder 13 and the second cylinder 15 are the cylindric of the hollow of diameter between 4 millimeters to 20 millimeters (D), and the diameter of two cylinders is identical, on thickness direction, the thickness of the first cylinder 13 is between 2 millimeters to 4 millimeters, that best is 3 millimeters (L), the thickness of the second cylinder 15 is between 3 millimeters to 5 millimeters, and that best is 4 millimeters (M).Above-mentioned size aspect, can be made into a series, the size of occlusion catheter is selected as required, in strength character, should guarantee the shape that remains unchanged for a long period of time, described herein referring to for a long time take that year at age of people is unit, and for example patient is 3 years old, and product at least will meet the projected life of 60 years.Then use and there is impermeable sheet film and block, each and every one size of concrete preparation two and the second cylinder section amass suitable circular diaphragm, be labeled as the first film sheet 31 and the second diaphragm 32, this diaphragm adopts macromolecular material to be made, for example, conventional high-molecular polyvinyl alcohol thin film or macromolecule silica gel thin film material in medical treatment.This diaphragm is embedded in the interlayer in circular-arc district, and launch fully, flatten, do not allow to occur the phenomenon of stack, fold, then use sewing process that the surrounding of thin film and circular-arc district are sewed up to 4, form a partition-type structures, this sewing process should guarantee that the node of suture is as much as possible little, level and smooth.
The diameter of described the first necking down 12 and the second necking down 14 is significantly less than the diameter of the first cylinder and the second cylinder, the size of its diameter relies on setting process to realize, can realize good plugging effect, there is again good telescopicing performance, for example diameter is 0.9 millimeter, and on thickness direction, the thickness of two necking downs is all 1 millimeter (N).Between above-mentioned necking down and cylinder, binding site, by applying external force, can, so that it produces certain deformation on axis direction, both have certain self-tuning performance.
Described right dish 11 is for outer edge is than the circle of large 1 millimeter of (S) ring-type outer of the first cylinder, and described left dish 16 is for outer edge is than the circle of large 3.5 millimeters of (X) ring-type outers of the second cylinder.
Closing in 5 places of described knitted body lay respectively at the centre of a described left side, left dish, and closing in place on right dish is fixed one by the mode of extrusion modling or welding fabrication and had externally threaded threaded column 51; And the closing on right dish is what cave inward, threaded column 51 is trapped in the inside of whole stopper in being, there is a screwed hole, for being threaded with seal wire, described threaded column is the alloy body identical with knitted body material, more level and smooth in appearance, with guarantee outer surface be one level and smooth, reduce thrombotic probability.
By above-mentioned mode, form a stopper.
This stopper, knitted body forms one can have certain elastic skeleton in the axial direction, and thin film is the barrier film of occlude blood.Can realize postoperative self-regulating function, plugging effect is better obviously simultaneously.
In using the process of metal wire knitted knitted body, different according to the selection schemer of technique, conventionally can form the pattern closing up in one end, the pattern that also can adopt two ends to close up, pattern as shown in Figure 4.In theory, the processing technology of two closing-in structures is more simple than single bottling technique.The knitted body of these two kinds of versions is all within protection domain of the present utility model.
Embodiment recited above is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of this utility model design spirit; relevant technical staff in the field, to various distortion of the present utility model and improvement, all should expand in protection domain as determined in this utility model claims.
Claims (5)
1. a patent ductus arteriosus stopper, comprises knitted body and thin film, and described knitted body is one-time formed through braiding and setting process with thin tinsel, and described thin film is medical macromolecule membrane, it is characterized in that,
Along axis direction, described knitted body is felt concerned about system and is felt concerned about right dish, the first necking down, the first cylinder, the second necking down, the second cylinder and the left dish that system is followed successively by coaxial setting left from the right side; And above-mentioned seamlessly transitting between adjacent part between two and continued presence;
Described the first cylinder and the second cylinder are the cylindric of the hollow of diameter between 4 millimeters to 20 millimeters, and the diameter of two cylinders is identical, on thickness direction, the thickness of described the first cylinder is between 2 millimeters to 4 millimeters, and the thickness of described the second cylinder is between 3 millimeters to 5 millimeters;
The diameter of described the first necking down and the second necking down is significantly less than the diameter of the first cylinder and the second cylinder, and on thickness direction, the thickness of two necking downs is all and is less than or equal to 1 millimeter;
Described right dish be outer edge than the circle of large 1 millimeter of the first cylinder, described left dish be outer edge than the circle of large 3.5 millimeters of the second cylinder,
Closing in place of described knitted body lays respectively at the centre of described left dish, right dish, and closing in place on right dish is fixed a threaded threaded column of tool by the mode of extrusion modling or welding fabrication;
The thin film of two expansion is at least set in described the second cylinder interior cavity, and the surrounding of each thin film and knitted body are sewed up and are connected to form one.
2. a kind of patent ductus arteriosus stopper according to claim 1, is characterized in that, described thin film is high-molecular polyvinyl alcohol thin film or macromolecule silica gel thin film conventional in medical treatment.
3. a kind of patent ductus arteriosus stopper according to claim 1, it is characterized in that, closing on described right dish is what cave inward, and described threaded column is trapped in the inside of whole stopper in being, described threaded column is the alloy body identical with knitted body material.
4. a kind of patent ductus arteriosus stopper according to claim 1, is characterized in that, the tinsel that described knitted body is used has the alloy threadlet of memory function for nitinol or other.
5. a kind of patent ductus arteriosus stopper according to claim 1, is characterized in that, the diameter of described the first necking down and the second necking down is less than or equal to 1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272979.3U CN203953729U (en) | 2014-05-26 | 2014-05-26 | A kind of patent ductus arteriosus stopper |
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| CN201420272979.3U CN203953729U (en) | 2014-05-26 | 2014-05-26 | A kind of patent ductus arteriosus stopper |
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| CN203953729U true CN203953729U (en) | 2014-11-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000630A (en) * | 2014-05-26 | 2014-08-27 | 山东省立医院 | Patent ductus arteriosus plugging device |
| US20200337685A1 (en) * | 2015-07-13 | 2020-10-29 | Marvel Medical Technologies LLC | Method and device for left atrial appendage closure |
| CN112401948A (en) * | 2020-11-24 | 2021-02-26 | 李建朝 | Semi-spherical structure plugging device for extracardiac operation |
-
2014
- 2014-05-26 CN CN201420272979.3U patent/CN203953729U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000630A (en) * | 2014-05-26 | 2014-08-27 | 山东省立医院 | Patent ductus arteriosus plugging device |
| CN104000630B (en) * | 2014-05-26 | 2016-11-23 | 山东省立医院 | A kind of patent ductus arteriosus stopper |
| US20200337685A1 (en) * | 2015-07-13 | 2020-10-29 | Marvel Medical Technologies LLC | Method and device for left atrial appendage closure |
| US11779319B2 (en) * | 2015-07-13 | 2023-10-10 | Marvel Medical Technologies LLC | Method and device for left atrial appendage closure |
| CN112401948A (en) * | 2020-11-24 | 2021-02-26 | 李建朝 | Semi-spherical structure plugging device for extracardiac operation |
| CN112401948B (en) * | 2020-11-24 | 2023-09-05 | 李建朝 | Hemispherical structure plugging device for extracardiac operation |
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