CN102908174A - Medical instrument for interventional therapy - Google Patents
Medical instrument for interventional therapy Download PDFInfo
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- CN102908174A CN102908174A CN2012103898239A CN201210389823A CN102908174A CN 102908174 A CN102908174 A CN 102908174A CN 2012103898239 A CN2012103898239 A CN 2012103898239A CN 201210389823 A CN201210389823 A CN 201210389823A CN 102908174 A CN102908174 A CN 102908174A
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Abstract
The invention relates to a medical instrument for interventional therapy. The medical instrument comprises at least one fabric body and a fixing and connecting device, wherein each fabric body is composed of a plurality of knitting yarns, and a part of the knitting yarns is provided with knitting yarn fixing ends; and the fixing and connecting device comprises an inner sleeve and an outer sleeve, the inner sleeve is fixed in the outer sleeve, the knitting yarn fixing ends are fixed between the inner sleeve and the outer sleeve, the inner sleeve is completely hollow and two ends of the inner sleeve are open. The medical instrument solves the problems that an existing fixing and connecting device for the fabric body planted into the medical instrument protrudes outwards or protrudes much and the like, so that the outer surface near the fixing and connecting device is flatter, and safe, convenient and controllable threaded connection manner is reserved.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, relate in particular to the medical apparatus and instruments that a kind of method that gets involved by the microcatheter technology utilization is sent to the selected position of human body.
Background technology
Carrying out disease treatment by the method for microcatheter technology utilization intervention is to utilize at present increasing Therapeutic Method, and the Catheter Interventional Therapy method is placed various materials, apparatus and medicine to heart, the artery and vein vascular of human body.
Such as placing stopper (such as atrial septal defect (ASD) stopper, ventricular septal defect (VSD) stopper, patent ductus arteriosus (PDA) stopper, patent foramen ovale (PFO) stopper etc.) to the defect of heart by the conduit interventional method, shutoff is damaged, with the treatment congenital heart disease.This is a kind of many insertion type medical apparatus and instruments of using, and generally is by being threaded between apparatus and the pusher, is transported to position in the predetermined human body by pusher, then frees screw thread and is connected connection with pusher to disconnect apparatus.For this apparatus, it is threaded and can realizes that apparatus is connected reliable and secure connection with pusher, simultaneously can realize controllable release, if namely the size Selection of apparatus is improper, or apparatus launches when bad, can be again in the apparatus income delivery conduit, and the suitable apparatus that renews, reappose last reliable release.
For another example, place stopper in left auricle by the conduit interventional method, prevention forms thrombosis owing to atrial fibrillation causes left auricle, and this thrombosis goes upward to the apoplexy that brain causes; Or prevent this XUESHUANTONG to cross other positions of human body blood circulation arrival health, the systemic thromboembolism that causes.Put stopper in left auricle, the shutoff left auricle, blocking-up enters the blood flow of left auricle, can eliminate owing to atrial fibrillation causes the thrombosed risk of left auricle, prevention of stroke.Such apparatus all is to be connected with pusher by screw thread usually at present.
In the time of in place the heart of these apparatuses to human body, artery and vein vascular, left auricle by the conduit interventional method, because heart, the artery and vein vascular of human body, especially the anatomical structure of left auricle is complicated, require apparatus accurately to arrive predetermined position, anatomical structure, the mechanics that will well adapt to simultaneously predetermined position require and the hemodynamics requirement, and a well design must be arranged the structure of apparatus.Only human body is being produced under the prerequisite of Wicresoft's wound, at first in the skin place puncture near blood vessel, seal wire is from the puncture orifice intravasation, conduit is under the guiding of seal wire, the one end arrives predetermined position, and the other end is stayed external, then utilizes conduit and pusher that apparatus is sent to predetermined position.When carrying out this type of operation, require the conduit of very little flexibility, conduit and seal wire will be designed to that good development is arranged under X-ray simultaneously.In case conduit has arrived predetermined position, removes seal wire, utilize passage that pusher sets up by conduit the end of apparatus guiding catheter, when apparatus all exposed from the end of conduit, apparatus will disconnect with pusher, to realize the release of apparatus.
At present, no matter be the stopper that is placed on the heart defect, still be placed on the stopper in the left auricle, it is connected most of the employing and is threaded with pusher, this is threaded is a threaded primary nut to be installed in the one or both ends of stopper, and this primary nut is normally given prominence to outside stopper net dish (or body).And, because existing stopper all is to be formed by a lot of root fine wire braidings usually, need parts of concentrating fixing many one metal wires at knitted body, be fixed in the small sleeve so must shrink the end of these one metal wires first, then be fixed on screwed primary nut again outside the small sleeve, as depicted in figs. 1 and 2, knitted body comprises at least one fixing and connecting device.
Similarly, vascular plug, intravascular stent and thrombus filter also can be formed by many one metal wire braidings, also may need to concentrate and fix these braided wires, and its knitted body also comprises so fixing and connecting device.At this moment, these medical apparatus and instruments run into same problem, and it is fixing and connecting device is oversize, protrude from easily the cardiovascular organization surface and be unfavorable for that endothelium is climbed and cover and produces higher thrombus source, perhaps with the cardiovascular organization friction greatly and cause inflammation and damage.
The limitation that screw connection on the implantation instrument of the prior art exists:
1, the structure of the screw connection of the implant (such as stopper) of insertion type medical apparatus and instruments commonly used in the prior art, as shown in Figure 1.First the end of a lot of one metal wires of knitting disc 5 is drawn in the inside that is fixed on again sleeve 3, and then the extension 6 of nut 1 is enclosed within on the outer wall of sleeve 3, then the extension 6 of nut 1 is welded with sleeve 3.As shown in Figure 2, the end of pusher 31 must have the external screw thread 32 and nut 1 interlock of sufficient length, and it is safe and reliable that guarantee is threaded.But, as shown in Figure 3, according to theory of mechanics and existing process technology, the end of the external screw thread 32 of pusher 31 has at least one section (generally to need the incomplete afterbody 33 of 0.5 ~ 1mm) thread, the incomplete afterbody 33 of thread can not be fully and nut 1 interlock, weakened due bonding strength.Because the end of pusher 31 is subject to the stopping of boundling weld part 2 of knitting disc 5, afterbody 33 can not reach the outside of nut 1, but afterbody 33 has occupied a segment length of nut 1 and has reduced the fastness that is threaded, so require nut 1 suitably to increase length, nut 1 has larger part and gives prominence to outside stopper knitting disc 5 outstanding 2 ~ 5 millimeters of general nut 1 needs like this.Behind the predetermined position in being implanted to heart, this giving prominence to can not change, and at this outstanding position larger thrombosis rate arranged.Stopper on the left auricle, because in the atrial fibrillation patient's that the left atrial appendage occlusion device is placed to the left auricle, according to dissection and the physiological structure of human body, near the blood flow patient's left auricle of atrial fibrillation is slower, very easily forms thrombosis.Climb at the endothelium at this outstanding position simultaneously and cover slowlyer, strengthen because the metal parts long term exposure in tissue or blood, can cause being discharged into the risk of the harmful metal ion in the blood.Another unfavorable factor that affects the safety of apparatus is, this outstanding position can larger degree affects the type of flow of the original blood of human body, can touch simultaneously the tissue around having influence on and causes damage.
2, after implanting such medical apparatus and instruments, patient may need to implement other intervene operation again, at this moment, when the apparatus of using (such as seal wire etc.) can be through implantation instrument next door since have outstanding, can hook or yoke arrive normally the carrying out of impact operation.
3, when making such medical apparatus and instruments, need to be through twice fixing operation, at first the tinsel of sleeve 3 and knitting disc 5 is fixed, then fixing sleeve 4 and nut 1, the making flow process is more, and parts are also more, can increase like this time of making, can increase the making cumulative errors simultaneously, be unfavorable for ensuring the quality of products, improve the realization difficulty.
4, fixing for sleeve 3 and braided wires stiff end usually use argon arc welding, but the energy size that argon arc welding is applied on the parts is uncontrollable; often can cause the braided wires stiff end to be blown; processing quality is unstable, and the radiation of simultaneously argon arc welding is larger, and is larger to the personnel's of operation harm.
5, the structure of the nut 1 of prior art employing is complicated, and difficulty of processing is larger.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of medical apparatus and instruments with fixing and connecting device for interventional therapy, with the fixing and connecting device of the knitted body that the solves implanted medical device of the prior art problems such as outwards outstanding or its outstanding degree is larger, thereby so that near its outer surface fixing and that connecting device is is more smooth, keep simultaneously the safe and simple controlled of thread connecting mode.
Solving the technical scheme that technical problem of the present invention adopts is: a kind of medical apparatus and instruments for interventional therapy is provided, comprise at least one knitted body, described at least one knitted body is made of many braided wires, at least a portion braided wires among the described many braided wires has the braided wires stiff end, it is characterized in that, also comprise a fixing and connecting device, the described fixing connecting device that reaches comprises an inner sleeve and a trocar sheath, described inner sleeve is fixed in the inside of described trocar sheath, described braided wires stiff end is fixed between the inner peripheral surface of the outer circumference surface of described inner sleeve and described trocar sheath, described inner sleeve is complete hollow, and the two ends of described inner sleeve all are open.
As the further improvement of medical apparatus and instruments of the present invention, the length of described inner sleeve equates (both only differ 10%) substantially with the length of trocar sheath.
As the further improvement of medical apparatus and instruments of the present invention, the internal diameter of described trocar sheath and the external diameter of described inner sleeve poor equals the twice (both only differ 10%) of the cross section maximum gauge of described braided wires substantially.
As the further improvement of medical apparatus and instruments of the present invention, described inner sleeve has female thread.
As the further improvement of medical apparatus and instruments of the present invention, the length of described inner sleeve is 1 ~ 2 millimeter, and described female thread runs through whole inner sleeve.
As the further improvement of medical apparatus and instruments of the present invention, described braided wires stiff end is evenly distributed on the outer circumference surface of described inner sleeve.
As the further improvement of medical apparatus and instruments of the present invention, in the outer face of described inner sleeve and described trocar sheath, the whole weld part that forms annular between described braided wires stiff end and described inner sleeve and the trocar sheath.
As the further improvement of medical apparatus and instruments of the present invention, the step of the annular of described weld part between described trocar sheath and described inner sleeve forms, and the height of described step is 0.2 ~ 0.8 millimeter, and described weld part forms by laser weld.
As the further improvement of medical apparatus and instruments of the present invention, the described fixing inside that connecting device is positioned at described at least one knitted body that reaches.
As the further improvement of medical apparatus and instruments of the present invention, the described fixing connecting device that reaches links to each other with an outer face of one of them knitted body, and described outer face is smooth.
Compared with prior art, the present invention possesses following advantage: 1, knitted body remains the approximate burnishing surface of outer surface or little outstanding behind implant into body, the climbing of endothelium of accelerating the apparatus surface covered, at utmost reduce the thrombosis rate, reduce the release of harmful metal ion in the blood, farthest reduce medical apparatus and instruments to the impact that blood of human body flows, the medical apparatus and instruments of avoiding simultaneously implanting hinders the operation of subsequent instrument.2, product structure and making process simplification reduce fabrication error, are conducive to improve product percent of pass.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the sketch map of interatrial septum of the prior art stopper.
Fig. 2 is the sketch map that the interatrial septum stopper among Fig. 1 is connected with pusher.
Fig. 3 is the enlarged diagram of the end of pusher.
Fig. 4 is the side partial schematic diagram of the first embodiment of medical apparatus and instruments of the present invention, and it comprises at least one knitted body and at least one fixing and connecting device.
Fig. 5 is the sketch map that fixing and connecting device among Fig. 4 and pusher are connected.
Fig. 6 is the side schematic view of the second embodiment of medical apparatus and instruments of the present invention, and this medical apparatus and instruments is the interatrial septum stopper with fixing and connecting device of an introversion.
Fig. 7 is the enlarged drawing of the fixing and connecting device among Fig. 6.
Fig. 8 is the side schematic view of the 3rd embodiment of medical apparatus and instruments of the present invention, and this medical apparatus and instruments is the left atrial appendage occlusion device with fixing and connecting device of an introversion.
Fig. 9 is the enlarged drawing of the fixing and connecting device among Fig. 8.
Figure 10 is the axonometric chart of the left atrial appendage occlusion device among Fig. 8.
Figure 11 is the another embodiment of the fixing and connecting device of medical apparatus and instruments of the present invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The invention provides a kind of medical apparatus and instruments for interventional therapy, it comprises at least one knitted body, described at least one knitted body is made of many braided wires, at least a portion braided wires among the described many braided wires has the braided wires stiff end, this medical apparatus and instruments also comprises a fixing and connecting device, the described fixing connecting device that reaches comprises an inner sleeve and a trocar sheath, described inner sleeve is fixed in the inside of described trocar sheath, described braided wires stiff end is fixed between the inner peripheral surface of the outer circumference surface of described inner sleeve and described trocar sheath, described inner sleeve is complete hollow, and the two ends of described inner sleeve all are open.
Below illustrate the aspects such as medical apparatus and instruments concrete structure of the present invention and making by a plurality of embodiment.
Embodiment 1:
As shown in Figure 4, the medical apparatus and instruments of present embodiment comprises at least one knitted body 5 and at least one the fixing and connecting device that links to each other with knitted body 5, and knitted body 5 is made of many braided wires, usually weaves with tinsel, nitinol alloy wire for example is so that knitted body 5 has good elasticity.The end of many braided wires, namely the braided wires stiff end 7 among Fig. 4 can compile and be fixed on this fixing reaching on the connecting device.In the prior art, the medical apparatus and instruments that has this type of architectural feature comprises vascular plug, patent ductus arteriosus (PDA) stopper, atrial septal defect (ASD) stopper, patent foramen ovale (PFO) stopper, left auricle (LAA) stopper, thrombus filter and intravascular stent etc.The remainder of this medical apparatus and instruments only links to each other with knitted body 5 and is not connected with this fixing connecting device that reaches, and Gu Tuzhong does not show the remainder of medical apparatus and instruments.For example, the knitted body 5 general near cylindrical of vascular plug, the knitted body 5 of PDA stopper can be bell, the knitted body 5 of ASD stopper is dual disc, the PFO stopper can be made of a knitting disc and some spoke support bars, and the LAA stopper can be made of a knitting disc and an anchor section.This class medical apparatus and instruments all passes through fixing and connecting device and the pusher 31 foundation connection status as shown in Figure 5 on the knitted body 5, is positioned to separate with pusher 31 after the tissue again.
Should be fixing and connecting device comprise that short nut 11(also can be described as: inner sleeve) and short sleeve 12(also can be described as: trocar sheath), the internal diameter of short sleeve 12 is slightly larger than the external diameter of short nut 11, both differences also should be slightly larger than the twice (braided wires generally has same diameter) of the maximum gauge of braided wires, short nut 11 is nested in the inside of short sleeve 12, and this braided wires stiff end 7 is fixed in the slit between short nut 11 and the short sleeve 12.This weak point nut 11 has female thread, and its two ends are to open fully and do not stopped that the pusher 31 that is provided with endways external screw thread 32 can pass whole short nut 11, and the afterbody 32 of pusher reaches the outside of short nut 11, as shown in Figure 5.
In the prior art, as shown in Figure 2, the screw thread of nut 1 does not run through whole length (because existence of nut extension 6), and the inner of its screw thread is clogging by sleeve 3 and boundling weld part 2, the outer end of only having nut 1 is open, pusher 31 can't pass whole nut 1, and the thread line of the afterbody 33 of pusher 31 is imperfect, as shown in Figure 3, so afterbody 33 can not the tight interlock with the female thread of nut 1, therefore, the main interlude (thread at this place has complete profile) of the external screw thread 32 of pusher 31 that relies on comes interlock nut 1, the threaded inner end of nut 1 has one section " dead length " can not be used for firmly connecting this pusher 31, this compensates " the dead length " of its screw thread with regard to the effective length that requires to increase nut 1, and nut extension 6 also can further increase the total length of nut 1, and nut 1 just can't guarantee firm the connection with the total length of nut extension 6 less than 2 millimeters, and its actual total length is about 3 ~ 5 millimeters.
In the present embodiment, as shown in Figure 5, because the female thread of short nut 11 can run through its whole length (not having nut extension 6), and pusher can pass whole short nut 11, the screw initial thread end of pusher can be exposed at outside the short nut 11, only the interlude of the screw thread by pusher comes the short nut 11 of interlock, has avoided above-mentioned " dead length " so that the length of whole short nut 11 can both be effectively fixing pusher.Therefore, the length of the short nut 11 of present embodiment may be as little to 1 ~ 2 millimeter, and the length of short sleeve 12 equates substantially preferably that with the length of short nut 11 length of short sleeve 12 also can be as short as 1 ~ 2 millimeter.
After the knitted body 5 that precasts this medical apparatus and instruments, can make by the following method the fixing and connecting device of present embodiment.
The first step is assembling, and many braided wires stiff end 7 Uniform Dispersions that needs are fixed together overlay on the lateral wall of short nut 11, then these braided wires stiff ends 7 is penetrated among the short sleeve 12 together with short nut 11; Perhaps, first many braided wires stiff ends 7 are passed short sleeve 12, will lack again the centre that nut 11 is embedded in short sleeve 12 and these braided wires stiff ends 7, and allow braided wires stiff end 7 be dispersed in the periphery of short nut 11.And, make the outer face of short nut 11 basically parallel with the outer face of short sleeve 12, braided wires stiff end 7 slightly protrudes from the outer face of short nut 11 and short sleeve 12.
Next step is welding, with laser beam with the fusing of at least a portion material of braided wires stiff end 7 and be filled in the slit between short nut 11 and the short sleeve 12, at least one circle of laser beam continuous welding, near the outer face of short nut 11 and short sleeve 12, form the more smooth integral solder section 13 of an annular, so that braided wires stiff end 7, short nut 11 and short sleeve 12 are welded together by the integral solder section 13 between them.
Utilize at last known technology, knitted body 5 is put into corresponding mould, form the shape that needs by heat treated mode.In the prior art, generally be a lot of root braided wires stiff ends 7 to be gathered penetrate among the sleeve 3, use argon arc welding, again sleeve 3 is inserted among the nut 1 again welding.By improvement of the present invention, save once assembling and once welding, not only simplify production procedure and raise the efficiency, also help and reduce fabrication error raising product percent of pass.And the used nut 1 of prior art is longer, and the processing of its screw thread and nut extension 6 is more complicated all, and comparatively speaking, the structure of the short nut 11 that medical apparatus and instruments of the present invention adopts is comparatively simple.
Fixing and the connecting device of the medical apparatus and instruments that present embodiment is produced (stopper), length outstanding outside the stopper knitting disc will significantly reduce, its total length usually only have prior art screw connection length 1/3rd, used amount of metal also reduces to below 1/3rd.After such stopper is implanted to human vas or heart, endotheliocyte is also climbed easily and is layed onto described fixing reaching on the connecting device, can reduce significantly the incidence rate of thrombosis, effectively reduce simultaneously this connecting device to the impact of human bloodstream, effectively reduce the release of harmful metal ion in the blood.
Embodiment 2:
As shown in Figure 6 and Figure 7, the fixing and connecting device of dual disc stopper also is fixed together by short nut 11, short sleeve 12 and integral solder section 13 between the two and consists of.The main distinction of itself and embodiment 1 is: fixing and connecting device is in the inside of knitted body 5, and integral solder section 13 comprises the small stair 41 of an annular, and the preferred heights of small stair 41 is 0.2 ~ 0.8mm.That describes among the manufacture method of present embodiment and the embodiment 1 is similar, just when knitted body 5 is still two ends loose mesh grid tubulose attitude, just make first described fixing and connecting device, the outer face of short nut 11 protrudes from slightly the outer face of short sleeve 12 and forms small stair 41, braided wires stiff end 7 is exposed on the sidewall that part outside the short sleeve 12 then relies on short nut 11 (just also on small stair 41), after finishing integral solder section 13, then knitted body 5 is turned over, so that just fixing the and connecting device of one-step forming is enclosed within the knitted body 5, utilize at last known technology, the braided wires of the other end of knitted body 5 is also fixing, knitted body 5 is put into corresponding mould, form the double plate shape that needs by heat treated mode, as shown in Figure 6.Small stair 41 is so that braided wires stiff end 7 is exposed under the irradiation of laser beam more fully, and laser beam can melt the expose portion of braided wires stiff end 7 more quickly and evenly, and the integral solder section 13 that processes like this is more regular also more firm.In order to form small stair 41, the length of short sleeve 12 is slightly less than the length of short nut 11, but need not reduce the length of short nut 11, also can not affect the intensity that is threaded.Certainly, only also can make needs at the fixing knitted body 5 of braided wires of one end, can strut the mesh of an end of the fixed point free of knitted body 5 this moment, obtain enough working places, so that join and weld described fixing and connecting device in the tipping of the internal direct of knitted body 5, need first braided wires stiff end 7 is folded to the inside of knitted body 5 in when assembling, having finished after the making of introversive fixing and connecting device again, heat treatment shaping becomes the dual disc stopper.
Employing is similar to the method among the embodiment 2, can make the left atrial appendage occlusion device such as Fig. 8, Fig. 9 and embodiment 3 shown in Figure 10.Be easier to form thrombosis near left auricle, and thrombosis herein has very large direct harm, therefore, the thrombus source that reduces the left atrial appendage occlusion device has larger necessity.
Fixing and the connecting device of describing among this embodiment 3, also be enclosed in the inside of the knitted body 5 of left atrial appendage occlusion device fully, this fixing connecting device that reaches links to each other with an outer face of knitted body, preferably, the outer face of knitted body 5 is smooth, has met well the requirement of clinical use.In the prior art, many braided wires stiff ends 7 are concentrated the centers that are fixed on knitted body 5, even will such connecting device be turned to the inside of knitted body 5, also are difficult to the crowded braided wires pressing with the center of knitted body 5 lateral surface.On the contrary, the braided wires stiff end 7 of present embodiment 3 can not concentrate on a central point, but the periphery of homodisperse short thread 11, this has just reduced the mutual obstruction between the braided wires, therefore near easier all braided wires that will bend short thread 11 flatten, and have realized the planarization of the outer face of knitted body 5.Behind the left atrial appendage occlusion apparatus implant into body of present embodiment 3, introversive fixing and connecting device has been avoided evagination, realized well smooth outer face, accelerating endotheliocyte covers climbing of apparatus surface, at utmost reduce the thrombosis rate, reduce the release of harmful metal ion in the blood, farthest reduce apparatus to the impact of left atrium blood flow, the apparatus after avoiding simultaneously implanting hinders follow-up instrumentation again.
In above a plurality of embodiment, short nut 11 can replace to threadless inner sleeve 24 as shown in figure 11, realizes threadless fixing and connecting device at knitted body 5.Connecting rod 21 with an auxiliary rod 22 and a far-end band bulb 23 inserts inner sleeve 24, forms departing connection.The diameter of bulb 23 is less than the internal diameter of inner sleeve 24, and the diameter sum of the diameter of auxiliary rod 22 and bulb 23 is greater than the internal diameter of inner sleeve 24.Before connecting rod 21 and knitted body 5 connected, the bulb 23 with connecting rod 21 far-ends passed inner sleeve 24 first, inserts auxiliary rod 22 again, and then connecting rod 21 is joined together with knitted body 5.At this moment, connecting rod 21 and auxiliary rod 22 are inserted among the inner sleeve 24 simultaneously, and then connecting rod 21 can not be freed to near-end.If extract auxiliary rod 22 out inner sleeve 24, then connecting rod 21 can freely be freed.
The advantage of medical apparatus and instruments of the present invention is: 1, outside the knitted body of implantation instrument the side without outstanding or reduce to give prominence to, preferably, realize that knitted body remains the approximate burnishing surface of outer surface or little outstanding behind implant into body, the climbing of endothelium of accelerating medical apparatus surface covered, at utmost reduce the thrombosis rate, reduce the release of harmful metal ion in the blood, farthest reduce medical apparatus and instruments to the impact that blood of human body flows, the medical apparatus and instruments of avoiding simultaneously implanting hinders the operation of subsequent instrument.2, product structure and making process simplification reduce fabrication error, are conducive to improve product percent of pass.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. medical apparatus and instruments that is used for interventional therapy, comprise at least one knitted body, described at least one knitted body is made of many braided wires, at least a portion braided wires among the described many braided wires has the braided wires stiff end, it is characterized in that, also comprise a fixing and connecting device, the described fixing connecting device that reaches comprises an inner sleeve and a trocar sheath, described inner sleeve is fixed in the inside of described trocar sheath, described braided wires stiff end is fixed between the inner peripheral surface of the outer circumference surface of described inner sleeve and described trocar sheath, described inner sleeve is complete hollow, and the two ends of described inner sleeve all are open.
2. the medical apparatus and instruments for interventional therapy as claimed in claim 1, it is characterized in that: the length of described inner sleeve equates substantially with the length of trocar sheath.
3. the medical apparatus and instruments for interventional therapy as claimed in claim 1 is characterized in that: the internal diameter of described trocar sheath and the external diameter of described inner sleeve poor equals the twice of the cross section maximum gauge of described braided wires substantially.
4. the medical apparatus and instruments for interventional therapy as claimed in claim 1, it is characterized in that: described inner sleeve has female thread.
5. the medical apparatus and instruments for interventional therapy as claimed in claim 4, it is characterized in that: the length of described inner sleeve is 1 ~ 2 millimeter, and described female thread runs through whole inner sleeve.
6. the medical apparatus and instruments for interventional therapy as claimed in claim 1, it is characterized in that: described braided wires stiff end is evenly distributed on the outer circumference surface of described inner sleeve.
7. the medical apparatus and instruments for interventional therapy as claimed in claim 1 is characterized in that: in the outer face of described inner sleeve and described trocar sheath, and the whole weld part that forms annular between described braided wires stiff end and described inner sleeve and the trocar sheath.
8. the medical apparatus and instruments for interventional therapy as claimed in claim 7, it is characterized in that: the step of the annular of described weld part between described trocar sheath and described inner sleeve forms, the height of described step is 0.2 ~ 0.8 millimeter, and described weld part forms by laser weld.
9. the medical apparatus and instruments for interventional therapy as claimed in claim 1 is characterized in that: the described fixing inside that connecting device is positioned at described at least one knitted body that reaches.
10. the medical apparatus and instruments for interventional therapy as claimed in claim 1 is characterized in that: described fixing and connecting device links to each other with an outer face of one of them knitted body, and described outer face is smooth.
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| CN201210389823.9A CN102908174B (en) | 2012-10-15 | 2012-10-15 | Medical instrument for interventional therapy |
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| CN201210389823.9A CN102908174B (en) | 2012-10-15 | 2012-10-15 | Medical instrument for interventional therapy |
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| CN106175867A (en) * | 2016-08-30 | 2016-12-07 | 上海心玮医疗科技有限公司 | A kind of occluder for left auricle and preparation method thereof |
| CN107106153A (en) * | 2014-12-31 | 2017-08-29 | 先健科技(深圳)有限公司 | Occluder for left auricle |
| CN107440761A (en) * | 2017-07-20 | 2017-12-08 | 上海心玮医疗科技有限公司 | A kind of plugging device with embedded steel bushing |
| WO2018219151A1 (en) * | 2017-06-02 | 2018-12-06 | 上海微创医疗器械（集团）有限公司 | Medical apparatus |
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| CN110680415A (en) * | 2019-09-20 | 2020-01-14 | 珠海崇健医疗科技有限公司 | Coated plugging device |
| US10813647B2 (en) | 2016-06-15 | 2020-10-27 | Lifetech Scientific (Shenzhen) Co., Ltd | Left atrial appendage occluder |
| US10993803B2 (en) | 2011-04-01 | 2021-05-04 | W. L. Gore & Associates, Inc. | Elastomeric leaflet for prosthetic heart valves |
| US11129622B2 (en) | 2015-05-14 | 2021-09-28 | W. L. Gore & Associates, Inc. | Devices and methods for occlusion of an atrial appendage |
| US11173023B2 (en) | 2017-10-16 | 2021-11-16 | W. L. Gore & Associates, Inc. | Medical devices and anchors therefor |
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| CN116763384A (en) * | 2023-05-23 | 2023-09-19 | 上海玮启医疗器械有限公司 | Left auricle occluder with anticoagulation coating and preparation method thereof |
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| US11457925B2 (en) | 2011-09-16 | 2022-10-04 | W. L. Gore & Associates, Inc. | Occlusive devices |
| US11911258B2 (en) | 2013-06-26 | 2024-02-27 | W. L. Gore & Associates, Inc. | Space filling devices |
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| EP3241498B1 (en) | 2014-12-31 | 2019-09-18 | Lifetech Scientific (Shenzhen) Co., Ltd. | Left atrial appendage occluder |
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| CN107106153A (en) * | 2014-12-31 | 2017-08-29 | 先健科技(深圳)有限公司 | Occluder for left auricle |
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| US11129622B2 (en) | 2015-05-14 | 2021-09-28 | W. L. Gore & Associates, Inc. | Devices and methods for occlusion of an atrial appendage |
| US11826052B2 (en) | 2015-05-14 | 2023-11-28 | W. L. Gore & Associates, Inc. | Devices and methods for occlusion of an atrial appendage |
| US10813647B2 (en) | 2016-06-15 | 2020-10-27 | Lifetech Scientific (Shenzhen) Co., Ltd | Left atrial appendage occluder |
| CN106175867A (en) * | 2016-08-30 | 2016-12-07 | 上海心玮医疗科技有限公司 | A kind of occluder for left auricle and preparation method thereof |
| US11812968B2 (en) | 2017-05-10 | 2023-11-14 | Lifetech Scientific (Shenzhen) Co. Ltd. | Left atrial appendage occluder |
| WO2018219151A1 (en) * | 2017-06-02 | 2018-12-06 | 上海微创医疗器械（集团）有限公司 | Medical apparatus |
| CN107440761A (en) * | 2017-07-20 | 2017-12-08 | 上海心玮医疗科技有限公司 | A kind of plugging device with embedded steel bushing |
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