CN101450013A - Blocking device of heart atrial, ventricular septal defect and patent oval foramen - Google Patents
Blocking device of heart atrial, ventricular septal defect and patent oval foramen Download PDFInfo
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- CN101450013A CN101450013A CN 200710195411 CN200710195411A CN101450013A CN 101450013 A CN101450013 A CN 101450013A CN 200710195411 CN200710195411 CN 200710195411 CN 200710195411 A CN200710195411 A CN 200710195411A CN 101450013 A CN101450013 A CN 101450013A
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- shroud
- hub disk
- blocking device
- septal defect
- ventricular septal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00592—Elastic or resilient implements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00606—Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
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Abstract
The invention discloses a choking device of atrium and ventricular septal defects and patent foramen ovale, which is safe and convenient for operation release, comprising a front tray 1 and a rear tray 2 which are approximate mushroom-shaped and composed of a plurality of metal wires, the front tray 1 and the rear tray 2 can hold the opening of atrium and ventricular septal defects and patent foramen ovale, especially, the metal wire extended by the front tray 1 and the metal wire extended by the rear tray 2 are all fixed by a rear chucking appliance on the outer surface of the rear tray 2, the rear chucking appliance 3 has screw threads connected with a conveyor, the structure of the invention is reasonable, especially a lumbar part formed by being braided with the front tray and the rear tray together recorded in the existing technology is not provided between the front tray and the rear tray, and the front tray and the rear tray are all composed of separate a set of metal wires, so the interactive pull force of the existing technology is not provided between the front tray and the rear tray. Accordingly, after the front tray is released from the tube of the conveyor, the maximum size state can be reached rapidly.
Description
Technical field:
The present invention relates to a kind of medical apparatus and instruments, specifically relate to a kind of blocking device of heart room, ventricular septal defect and patent foramen ovale in the interventional therapy.
Background technology:
The cardiopulmonary organ of human body ratio per capita has groups of people's cardiopulmonary organ to have geneogenous defective, for example atrial septal defect (ASD), ventricular septal defect (VSD) and patent foramen ovale (PFO) or be exactly common disease, the past, sutural treatment was carried out in this operation of need beginning to speak.Along with the maturation and the development of interventional therapy method, existing generally was to utilize the tubulose conveyer device that the blocking device of one nitinol alloy wire braiding is sent into the atrioventricular septal defect place in recent years, damaged place was blocked, through forming thrombosis after a while and forming the cell cortex.Developing comparatively sophisticated in the prior art is the blocking device of the designed production of AGA Medical Corp. of the U.S., concrete visible CN1106828 or CN1269707.Disclosed blocking device has solved the interventional therapy problem of atrioventricular septal defect really in the above-mentioned patent documentation; but openly also there are some defectives in it with claimed product; blocking device as shown in Figure 1; the structure of its relaxed state is shown in the A8 state of Fig. 1; include shroud; hub disk and waist; and front and back dishes and waist are the tinsel continuous weaving and are fixed by the stationary fixture of end, front and back; to be exactly an one metal wire extend to intermediary waist by the end anchor clamps beginning through shroud to essence extends to hub disk again and terminate in another anchor clamps; that is to say that all tinsels are isometric, have only isometricly could guarantee in the tubulose conveyer device, to take in and discharge.Above-mentioned tinsel is that Ultimum Ti is made, the described relaxed state that obtains through heat treatment, be the sketch map that product is inserted the process of release in the above-mentioned patent documentation in human body as shown in Figure 1, at first be that blocking device is put into a tubulose carrier, when the release end of carrier arrives the atrioventricular septal defect position, discharge blocking device, A1~A8 among Fig. 1 is the substep signal of dispose procedure, the A1 step is that shroud disengages, the wiry of one that this moment, shroud was subjected to waist pins down, and the radius of shroud does not reach the maximum radius of no stress; The A2 step is that waist disengages, and this moment, the radius of shroud did not reach maximum radius yet; The A3 step is that hub disk disengages the part, the radius of shroud and aforementioned A1, the radius of A2 is suitable, in dispose procedure, pulling release and blocking device before and after the doctor wants constantly, whether the maximum radius of souning out shroud and/or waist is greater than the notch size of defect, as shown in Figure 1, in fact only when A7~A8 step, the size of shroud and/or waist is just launched, and its reason of launching too late is after shroud discharges, and the tinsel of the shroud still waist of restrained state is held, in like manner, shroud and waist also can suffer restraints state hub disk pulling force and can not launch fully, have only hub disk to be released, shroud and waist could launch fully.This can cause the erroneous judgement of doctor when settling blocking device, think that the size of blocking device is not inconsistent, the blocking device that from human body, takes out carrier and do not discharge, replacing the blocking device of new different size inserts again, the repeatable operation of this operation has increased the risk of operation, and the blocking device of existing technology is because the imperfection of structural design, cause the blocking device size to launch too late, therefore the size of blocking device may with patient's damaged opening size mismate, the one, cause operation repeatedly, the 2nd, the size mismate can produce the possibility that gets loose of blocking device, the 3rd, incomplete unfolded blocking device is also bigger in the size of axial direction, and axially pulling easily damages cardia repeatedly.Existing in addition blocking device all is to be formed by very thin Ultimum Ti silk one braiding, wherein shroud mainly plays plugging action, hub disk mainly plays clamping action, because the forward and backward dish of above-mentioned blocking device and waist are equipped with mylar and play plugging action, the clamping action power of fine wire is less, less stable and production cost are higher, and how avoiding above-mentioned defective and improving atrial septal defect is a problem that urgency is to be solved.
Summary of the invention:
Goal of the invention of the present invention be disclose a kind of safer, the blocking device of be convenient to perform the operation the heart room, ventricular septal defect and the patent foramen ovale that discharge.
Realize that technical solution of the present invention is as follows: constitute approximate mushroom shroud 1 and hub disk 2 by many one metal wires, but shroud 1 and hub disk clamping rooms 2, ventricular septal defect and patent foramen ovale opening, particularly the tinsel of the tinsel of the extension of shroud 1 and hub disk 2 is fixing by the rear jig 3 of hub disk 2 outer surfaces, and rear jig 3 has the screw thread that is connected with carrier 6.
The inner of described hub disk 2 is provided with interior anchor clamps 4 that grip the hub disk other end wiry.
The outer surface of described shroud 1 is provided with a front jig 5, and its other wire ends with shroud 1 grips.
The outer surface of described shroud 1 is provided with a front jig 5, its with shroud 1 one in addition another wire ends of wire ends and hub disk 2 grip simultaneously; The length wiry of hub disk 2 is less than or equal to shroud 1 length wiry, the rapid deployment the when shroud 1 of being convenient to blocking device discharges.
The radical wiry of the forward and backward dish 1,2 of described formation can be 2~160, is preferably 8~72, and forward and backward dish 1,2 extension that is woven to netted, front and back dish 1,2 is that non-netted or direct extension intersects and passes; Or forward and backward dish 1,2 and corresponding extension are netted.
The radius of described shroud 1 can more than or equal to or less than hub disk 2, and the periphery of forward and backward dish 1,2 all has a transition bending segment in opposite directions; Shroud 1 or/and hub disk 2 or/and cross one another extension can be provided with mylar or polyester cotton.
The position wiry of described front and back dish 1,2 is oppositely arranged, or the setting of staggering mutually of the position wiry of front and back dish 1,2.
Can be provided with a porous film in the inner space of described shroud 1.
Be provided with the polyester cotton in the intersection region of described front and back dish 1,2.
The part of the length difference wiry of described front and back dish 1,2 is located at front portion wiry, as bending or have certain around.
The technical scheme that the present invention provides can make very advantages of simple of product structure, what do not have the prior art record between the dish of especially described front and back weaves the waist that forms with front and back dish one, and front and back of the present invention dish all is that one group of independent tinsel constitutes, so there is not the interactional pulling force of prior art between the dish of front and back.Therefore after shroud discharges from the pipe of carrier, can reach relaxed state (full-size state) completely rapidly, the operation doctor easily spurs blocking device then can find out unfolded shroud whether greater than the size of the damaged opening that exists, the changeover portion self of dish becomes the structure of diameter (changeover portion of all many one metal wires forms a spatial reducing cone) exactly simultaneously, but it is the size of the damaged opening of self adaptation just, and many one metal wires of above-mentioned front and back dishes be not be woven to mutually netted, mutual resistance in the time of can not producing distortion each other, particularly after the space of the approximate date core shaped of changeover portion intermediate formation is built-in with the polyester cotton, produce certain volumetric expansion after the cotton meeting of polyester absorbs certain liquid in human body, naturally the tinsel of extruding changeover portion outwards is expanded to the wall of damaged opening and contacts, and that is to say that transition region of the present invention has the radius adaptive adjustment capability of certain degree.Above-mentioned characteristics of the present invention have not only solved the defective that prior art exists, improve the success rate of doctor's placement blocking device greatly, reduced doctor's erroneous judgement, alleviated patient's treatment risk, and blockage effect can further improve the use amount wiry of minimizing blocking device.
Description of drawings:
Fig. 1 is the release sketch map of the blocking device of prior art.
Fig. 2 is a first embodiment of the present invention structural representation.
Fig. 3 is a second embodiment of the present invention overall structure sketch map.
Fig. 4 is the shroud structural representation after the decomposition of Fig. 3.
Fig. 5 is the hub disk structural representation after the decomposition of Fig. 3.
Fig. 6 is a third embodiment of the present invention overall structure sketch map.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the shroud structural representation after the decomposition of Fig. 6.
Fig. 9 is the left view of Fig. 8.
Figure 10 is the shroud structural representation of Fig. 6 after decomposing.
Figure 11 is the left view of Figure 10.
Figure 12 is a fourth embodiment of the present invention overall structure sketch map.
Figure 13 is a fifth embodiment of the present invention overall structure sketch map.
Figure 14 is the stereoscopic-state sketch map of Figure 13.
Figure 15 is the six or four an embodiment overall structure sketch map of the present invention.
Figure 16 is the left view of Figure 15.
Figure 17 is the stereoscopic-state sketch map of Figure 15.
Figure 18 is the release sketch map with three anchor clamps blocking devices of the present invention.
Figure 19 is the release sketch map with two anchor clamps blocking devices of the present invention.
The specific embodiment:
See also Fig. 1~Figure 19, specific embodiments of the invention are as follows: see also Fig. 2, constitute approximate mushroom shroud 1 and hub disk 2 by many one metal wires, but shroud 1 and hub disk clamping rooms 2, ventricular septal defect and patent foramen ovale opening, particularly the tinsel of the tinsel of the extension of shroud 1 and hub disk 2 is fixing by the rear jig 3 of hub disk 2 outer surfaces, and rear jig 3 has the screw thread that is connected with carrier 6; Tinsel is the Ultimum Ti silk, rear jig 3 is a cylinder, one end has on female thread or the cylinder tapping thread is arranged, can be spirally connected with the seal wire in the carrier 6 by screw thread, shroud 1 becomes an approximate netted dish type of mushroom bilayer by one group many alloy silk interlacings, form alloy silk after the netted plate-like all from the central axial direction bending of the periphery of disk to this disk, bending back alloy silk is interlacing no longer, and each extends to central axial direction with the straightway form, each alloy silk all has a changeover portion 7, bending segment 8 and extension 9, wherein changeover portion 7 forms umbrella or plate-like with bending segment 8, the extension 9 of the alloy silk of the extension of shroud 1 meets at gradually and forms a spatial reducing bullet together, extension 9 is as the gradually little handle of a radius, the outer surface of shroud 1 is smooth netted plane, this plane can make it be convenient to human endothelial cells after inserting human body and climb the whole outer surface that is overlying on shroud 1, reaches best barrier effect; 2 of hub disks are organized many alloy silk interlacings by another and are become an approximate mushroom netted dish type, its alloy silk is a central point with the dish type center of circle, each extends to central axial direction with the straightway form, each tinsel all have a changeover portion 7 ', bending segment 8 ' and extension 9 ', wherein changeover portion 7 ' with bending segment 8 ' formation umbrella or plate-like, extension 9 ' also form a spatial reducing bullet; Every alloy silk of shroud 1 reducing bullet is all from passing between two of the hub disk 2 reducing bullets adjacent alloy silks and intersecting fixing with back stationary fixture 3 with the alloy silk with hub disk 2, shroud 1 has formed independent structures separately with hub disk 2, it can be considered has two umbrella-shaped structures to be oppositely arranged, these two extensions 9 independently, 9 ' mutually intersections are passed the space 10 that forms an approximate Semen Jujubae shape, be built-in with the polyester cotton in this space 13, extension 9 in actual the use, 9 ' essence is to be positioned in the middle of the opening of heart defect, after absorbing the body fluid (as blood) of human body, the polyester cotton in the space 10 of approximate Semen Jujubae shape has the expansion of suitable degree, what expansion produced can promote above-mentioned extension 9 to power all around, 9 ' the alloy silk outwards expand, and then with damaged opening complete closed, and it is surperficial to the opening chucking power with the bending of periphery in opposite directions at hub disk 2 edges to strengthen shroud 1, makes shroud 1 adherent fully with the inner surface and the opening of hub disk 2.Because each root alloy silk is independently (a non-metal knitted state), when outwards expanding, do not produce each other restriction and obstruction each other, the resistance at edge that depends on the shape of cotton outside thrust that produces of polyester and damaged opening as the abducent size of each alloy silk of changeover portion, the alloy silk of final changeover portion forms irregular date core shaped 10 according to irregular the adapting of damaged opening, the blocking device that the blocking action of damaged opening more is better than prior art, and each alloy silk of extension is the raw silk rings state, its alloy silk when compressive state can be drawn as near linear state, and each alloy silk does not form the intersection grid of reticulate body each other; Because each constitutes (shroud 1 and the cylinder part 2 of prior art is that a combination spun gold one braiding constitutes) by an independent combination spun gold respectively for above-mentioned shroud 1 and hub disk 2, so the release of each absolute construction or recovery are not influenced by involving of another absolute construction all, the release or the recovery that are shroud 1 are not influenced by the tractive of hub disk 2, equally, the release of hub disk 2 or recovery are not influenced by the tractive of shroud 1 yet, shroud 1 is once disengaging the maximum gauge state that just can reach substantially (shown in the B1 among Figure 18 and Figure 19~B2 step), and hub disk 2 is too once disengaging the maximum gauge state that just reaches substantially, this with the prior art product to disengage step different fully, A1~A8 among Fig. 1 is the substep signal of the dispose procedure of prior art, A1~A4 step is disengaging of shroud 1, this moment, shroud 1 was subjected to pining down of coupled hub disk 2, the radius of shroud 1 can not be launched fully, the A6 step is that hub disk 2 partly disengages, but the radius of shroud 1 still can not launch fully, after must hub disk 2 being disengaged fully to the A8 step, shroud 1 just can reach default maximum gauge state.And of the present invention disengaging as long as the plate edge of shroud 1 disengages from carrier 6, just can reach maximum gauge state (as shown in figure 18) substantially, B1~B2 among Figure 18 is disengaging of shroud 1, shroud 1 is not subjected to the influence of hub disk 2 when disengaging, its radius launches rapidly, shroud 1 does not just launch (prior art palpus hub disk 2 disengages fully) fully when hub disk 2 also pushes out from carrier 6 fully, whether the doctor was very easy to judge this obturator and was suitable for this moment, save patient's ray open-assembly time and operating time, the treatment safety improves greatly.
See also Fig. 3~Fig. 5, the inner of described hub disk 2 is provided with interior anchor clamps 4 that grip the hub disk other end wiry; One end of many alloy silks of hub disk 2 and rear jig 3 are fixing, the other end is then fixed with interior anchor clamps 4, interior anchor clamps 4 place in the disk body of shroud 1, interior anchor clamps 4 form a visible dots (being the shaft core position place of obturator), it can this point be to judge whether shroud 1 is suitable for that the visible dots that wherein interior anchor clamps 4 form makes the doctor, when the end points of both interior anchor clamps 4 arrives damaged opening part, this moment, shroud 1 launched (the B2 step among Figure 18) substantially fully, the doctor only needs pulling gently according to this visible dots, and just whether shroud 1 is suitable as can be known, swift and convenient to operate, safety.
See also Figure 12 (be its structure of clear expression, the grid lines among Figure 12 does not show), the outer surface of described shroud 1 is provided with a front jig 5, and its other wire ends with shroud 1 grips; After fixing, one end of one group many alloy silks of formation shroud 1 and front jig 5 be woven into an approximate mushroom netted dish type, its other end is fixing with the rear jig 3 of hub disk 2 again, current, after hub disk launches, the interior anchor clamps 4 of hub disk 2 can support the bottom face to front jig 5 after expansion, formation is shored shroud 1, before making, hub disk has stronger chucking power, anchor clamps 4 in also keeping simultaneously, rear jig 3 and front jig 5 are in same axis (proper alignment) all the time, and can make hub disk 2 and shroud 1 certain inclination can be arranged with respect to axis, make the blocking device axis consistent with the axis of body lumen, has self-regulating function, and make shroud 1 and hub disk 2 and the tight clamping of opening, better paste at opening, bad sealing produces displacement when preventing may not to be in same axis because of hub disk 2 and shroud 1, and is formed with two visible dots and makes doctor's more convenient operation fast reach safety.
See also Fig. 6~Figure 11, the outer surface of described shroud 1 is provided with a front jig 5, its with shroud 1 one in addition another wire ends of wire ends and hub disk 2 grip simultaneously; The length wiry of hub disk 2 is less than or equal to shroud 1 length wiry, the rapid deployment the when shroud 1 of being convenient to blocking device discharges; Before strengthening, the chucking power of hub disk, every alloy silk of each reducing bullet of shroud 1 and hub disk 2 intersect mutually pass after, one end of one end of shroud 1 and hub disk 2 alloy silks is with fixing by rear jig 3, one end of the other end of hub disk 2 alloy silks and shroud 1 alloy silk is again with fixing by front jig 5, make shroud 1 and hub disk 2 still be independent structures separately, and the length of the alloy silk of hub disk 2 can be less than the length of shroud 1 alloy silk, form not isometrical before, hub disk, rapid deployment when the shroud 1 of being convenient to blocking device discharges, or the length of the alloy silk of shroud 1 and hub disk 2 can equate, form isometrical before, hub disk, the rapid deployment the when shroud 1 of also being convenient to blocking device discharges.
The radical wiry of the forward and backward dish 1,2 of described formation can be 2~160, is preferably 8~72, and forward and backward dish 1,2 extension that is woven to netted, forward and backward dish 1,2 is that non-netted or direct extension intersects and passes; Or forward and backward dish 1,2 and corresponding extension are netted; The extension 9,9 of forward and backward dish ' can be curve extension or pass for straight-line extension intersects, the forward and backward dish of this structure can be packed in the very little carrier 6 of caliber, or the extension 9,9 of forward and backward dish 1,2 ' be netted, form Box junction, but it is big that the caliber of carrier 6 then needs, and it is best constitute forward and backward dish 1,2 radicals wiry being 8~72.
See also Figure 13~Figure 17, shroud 1 is the filament structure, it constitutes a framework by many alloy silk monomers, an i.e. end of one group many alloy silks gathering converges and is fixing by front jig 5, each alloy silk all with front jig 5 be the center of circle press the circumference in equal parts spacing uniform and to one section of axial vertical direction curve extension after, continue the kink of curve to circumferencial direction, shroud 1 each root alloy silk encompasses after the petal framework and all extends to centre-point curve again, a plurality of petal folded mutually approximate umbrella faces of forming, and the extension 9 of each alloy silk meets at gradually, and to form a spatial reducing bullet together fixing to rear jig 3, the cross section is similar to a shark dorsal fin (shown in Figure 13), 2 of back shrouds are organized many alloy silk monomers by another and are constituted, its shape is identical with shroud 1, before, the formed reducing bullet of hub disk directly extends intersection mutually and passes, the rear jig 3 that is shroud 1 reducing bullet extension, 9 end line portions and hub disk 2 is fixing, and hub disk 2 reducing bullet extension 9 ' end line portions are then with fixing by the front jig 5 of shroud 1; Or shroud 1 each root alloy silk forms a petal framework, a plurality of petal folded mutually approximate umbrella faces (shown in Figure 15) of forming, back shroud 2 also is all petal framework, and back shroud 2 reducing bullet extension 9 ' end line portions are then fixing with interior anchor clamps 4, and its effect is described identical with Figure 12; The surface of above-mentioned shroud 1 and back shroud 2 is provided with mylar (as poly fluoride film PTFE etc.), before mylar and the formation, the framework of hub disk is made and is one, and it is preceding, be filled with polyester cotton or dacron in the space between the hub disk reducing bullet, to strengthen radial support power and plugging action, the shroud 1 of filament structure and back shroud 2 greatly reduce use amount wiry, the length of single metal wire greatly shortens, disengaging of shroud 1 is more quick, and before the filament structure, nerve after the expansion of hub disk, trafficability characteristic and propelling movement property are better, can obtain satisfied adherent and locating effect.
The radius of described shroud 1 can more than or equal to or less than hub disk 2, and the periphery of forward and backward dish 1,2 all has a transition bending segment in opposite directions; Shroud 1 or/and hub disk 2 or/and cross one another extension can be provided with mylar or polyester cotton; The above-mentioned shroud 1 and the radius of hub disk 2 can be different, and when being used for ASD, the diameter of shroud 1 should be greater than the diameter of hub disk 2, when being used for VSD, the diameter of shroud 1 should be more than or equal to the diameter of hub disk 2, and when being used for PF0, then the diameter of shroud 1 should be less than or equal to the diameter of hub disk 2; Before and after dish 1,2 edge one bending is all arranged in opposite directions, the one side of blood stream pressure is used the bigger dish of radius in actual the use, above-mentioned edge be bent with the clamping that is beneficial to defect periphery heart wall in opposite directions; For reaching further blockage effect, when using, essence also is provided with the cotton thin film of polyurethane or PTFE or terylene or silica gel in the flat space of round shape of pro-hub disk 1,2, running into the polyester cotton stream velocity as blood flow slows down and forms thrombosis, accumulation and form epithelium gradually at film surface, the opening at heart defect position blocks the most at last, generally also can be provided with the cotton thin film of a polyester in shroud 1 and the hub disk 2, also can produce blocking action, and also can above-mentioned material be set to strengthen blocking action at shroud 1 and hub disk 2 cross one another extensions.
The position wiry of described front and back dish 1,2 is oppositely arranged, or the setting of staggering mutually of the position wiry of front and back dish 1,2; Generally speaking, each alloy silk of front and back dish 1,2 is corresponding, the alloy silk of dish 1,2 is mutually at same position promptly, certainly each alloy silk of front and back dish can stagger mutually in another case, in such cases, the bending part in opposite directions of front and back dish 1,2 can make wall have small interruption to rise and fall to the pressure position difference of defect periphery heart wall, can increase wall and the frictional force between the bending part in opposite directions, make blocking device be difficult for producing radial displacement.
Can be provided with a porous film in the inner space of described shroud 1; Porous film is in the flat space of dish 1,2 before and after the cotton thin film of polyester can place, it is that the edge and the tinsel of thin film fixed, be that multiple spot is fixed, coil 1,2 be connected and improve blockage effect for further improving the cotton thin film of polyester and front and back, described thin film can be made outer surface in the extension, this is similar to existing two umbrella covers, thin film is not only fixedlyed connected with tinsel at periphery like this, the intermediary multiple spot in surface also can be connected with the tinsel of extension, has improved the reliability of guaranteeing to cover damaged opening when thin film launches in human body greatly.
Be provided with the polyester cotton in the intersection region of described front and back dish 1,2; The intersection region of forward and backward dish is meant that independently extension 9,9 ' intersection is passed the space 10 of a formed approximate Semen Jujubae shape to two on cancellated forward and backward dish mutually, and filling polyester cotton can be improved blocking action in this above-mentioned space.
The part of the length difference wiry of described front and back dish 1,2 is located at front portion wiry, as bending or have certain around; Dish 1,2 extension 9,9 before and after the part of length difference wiry is meant ' leading section (promptly with fixed anterior one section wiry of anchor clamps institute), but its every one metal wire kink of curve forms a bit of approximate waveform or carries out spiral surrounding, dish 1,2 tinsel has a length difference before and after making, so that the disengaging fast of shroud 1.
For increasing above-mentioned clamping action, the tinsel radical of hub disk 2 can be less than the tinsel radical of shroud 1, but the wire diameter of hub disk 2 should be slightly larger than shroud 1 diameter wiry simultaneously, can increase the elasticity of hub disk 2 and the chucking power of blocking device like this.
Above-mentioned front and back dish 1,2 can be respectively the combination of network structure and filament structure, and promptly shroud 1 is a network structure, and hub disk 2 then is the filament structure, or shroud 1 is the filament structure, and 2 of hub disks are network structure.
Technical solutions according to the invention owing to than the disclosed blocking device of prior art, do not have in a word Netted waist with front and back dishes integrated woven is arranged, and discharge then can be complete for shroud one when discharging in human body Launch, a doctor slightly pulling then can accurately judge the shroud diameter greater than the diameter of damaged opening, just can with Whole blocking device discharges, and has greatly improved the success rate that operation is placed, and not reducing because size is inconsistent needs Take out and change the again anti-probability of putting of blocking device, reduced patient's misery and improved the success of performing the operation Rate. Reduce simultaneously the use amount wiry of blocking device, safer to human body, because wire is got over Micro voltage more many (principles of similar electrochemical cell) in the human body that produces at most, this also is the present invention A big advantage. The present invention has great technological progress than prior art in a word, will control intervention Treat and produce great impact.
Claims (10)
1. the blocking device of a heart room, ventricular septal defect and patent foramen ovale, constitute approximate mushroom shroud (1) and hub disk (2) by many one metal wires, shroud (1) and hub disk (2) but clamping room, ventricular septal defect and patent foramen ovale opening, the tinsel that it is characterized in that the tinsel of extension of shroud (1) and hub disk (2) is fixing by the rear jig (3) of hub disk (2) outer surface, and rear jig (3) has the screw thread that is connected with carrier (6).
2. the blocking device of heart according to claim 1 room, ventricular septal defect and patent foramen ovale, the inner that it is characterized in that described hub disk (2) are provided with interior anchor clamps (4) that grip the hub disk other end wiry.
3. the blocking device of heart atrioventricular septal defect according to claim 2 and patent foramen ovale is characterized in that the outer surface of described shroud (1) is provided with a front jig (5), and its other wire ends with shroud (1) grips.
4. the blocking device of heart according to claim 1 room, ventricular septal defect and patent foramen ovale, the outer surface that it is characterized in that described shroud (1) is provided with a front jig (5), its with shroud (1) one in addition another wire ends of wire ends and hub disk (2) grip simultaneously; The length wiry of hub disk (2) is less than or equal to shroud (1) length wiry, the rapid deployment the when shroud (1) of being convenient to blocking device discharges.
5. according to the blocking device of claim 1 or described heart rooms 2 or 3 or 4, ventricular septal defect and patent foramen ovale, the radical wiry that it is characterized in that the forward and backward dish of described formation (2) can be 2~160, be preferably 8~72, and forward and backward dish (1, the 2) extension that is woven to netted, forward and backward dish (1,2) is non-netted or pass for directly extending to intersect; Or forward and backward dish (1,2) and corresponding extension are netted.
6. the blocking device of heart according to claim 5 room, ventricular septal defect and patent foramen ovale, it is characterized in that described shroud (1) radius can more than or equal to or less than hub disk (2), and the periphery of forward and backward dish (1,2) all has a transition bending segment in opposite directions; Shroud (1) or/and hub disk (2) or/and cross one another extension can be provided with mylar or polyester cotton.
7. the blocking device of heart according to claim 6 room, ventricular septal defect and patent foramen ovale is characterized in that the position wiry of described front and back dishes (1,2) is oppositely arranged, or the setting of staggering mutually of the position wiry of front and back dishes (1,2).
8. the blocking device of heart according to claim 7 room, ventricular septal defect and patent foramen ovale is characterized in that can being provided with a porous film in the inner space of described shroud (1).
9. the blocking device of heart according to claim 8 room, ventricular septal defect and patent foramen ovale is characterized in that being provided with polyester cotton or film in the intersection region of described front and back dishes (1,2).
10. the blocking device of heart according to claim 4 room, ventricular septal defect and patent foramen ovale is characterized in that the part of the length difference wiry of described front and back dishes (1,2) is located at front portion wiry, as bending or have certain around.
Priority Applications (1)
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CN 200710195411 CN101450013B (en) | 2007-11-28 | 2007-11-28 | Blocking device of heart atrial, ventricular septal defect and patent oval foramen |
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CN 200710195411 CN101450013B (en) | 2007-11-28 | 2007-11-28 | Blocking device of heart atrial, ventricular septal defect and patent oval foramen |
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CN101450013A true CN101450013A (en) | 2009-06-10 |
CN101450013B CN101450013B (en) | 2011-03-23 |
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CN 200710195411 Expired - Fee Related CN101450013B (en) | 2007-11-28 | 2007-11-28 | Blocking device of heart atrial, ventricular septal defect and patent oval foramen |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103200879A (en) * | 2010-09-29 | 2013-07-10 | 泰尔茂株式会社 | Medical device |
CN106821427A (en) * | 2017-03-17 | 2017-06-13 | 广州新诚生物科技有限公司 | A kind of Novel room is every defect plugging device |
CN114027914A (en) * | 2021-08-24 | 2022-02-11 | 上海形状记忆合金材料有限公司 | Woven single-rivet degradable implantation instrument |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5944738A (en) * | 1998-02-06 | 1999-08-31 | Aga Medical Corporation | Percutaneous catheter directed constricting occlusion device |
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2007
- 2007-11-28 CN CN 200710195411 patent/CN101450013B/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103200879A (en) * | 2010-09-29 | 2013-07-10 | 泰尔茂株式会社 | Medical device |
CN103200879B (en) * | 2010-09-29 | 2016-05-04 | 泰尔茂株式会社 | Medical instrument |
CN106821427A (en) * | 2017-03-17 | 2017-06-13 | 广州新诚生物科技有限公司 | A kind of Novel room is every defect plugging device |
WO2018166377A1 (en) * | 2017-03-17 | 2018-09-20 | 广州新诚生物科技有限公司 | New occluding device for septal defect |
CN106821427B (en) * | 2017-03-17 | 2019-09-20 | 广州新诚生物科技有限公司 | A kind of Novel room is every defect plugging device |
CN114027914A (en) * | 2021-08-24 | 2022-02-11 | 上海形状记忆合金材料有限公司 | Woven single-rivet degradable implantation instrument |
CN114027914B (en) * | 2021-08-24 | 2024-04-12 | 上海形状记忆合金材料有限公司 | Braided single-rivet degradable implantation instrument |
Also Published As
Publication number | Publication date |
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CN101450013B (en) | 2011-03-23 |
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