CN202143640U - Left atrial appendage occluder - Google Patents
Left atrial appendage occluder Download PDFInfo
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- CN202143640U CN202143640U CN201120182834.0U CN201120182834U CN202143640U CN 202143640 U CN202143640 U CN 202143640U CN 201120182834 U CN201120182834 U CN 201120182834U CN 202143640 U CN202143640 U CN 202143640U
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- atrial appendage
- left atrial
- occlusion device
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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
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
- A61B17/12172—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure having a pre-set deployed three-dimensional shape
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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
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12122—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder within the heart
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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
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
- A61B17/12177—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
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Abstract
The utility model relates to a left atrial appendage occluder which comprises an elastic closing disc, and a fixing frame connected with the closing disc and positioned on one side of the closing disc, wherein the fixing frame comprises a central end part connected with the closing disc and a plurality of mutually-connected and curved support rods; and at least an anchor thorn facing towards the closing disc is arranged nearby the rear end of at least one support rod. The left atrial appendage occluder provided by the utility model has a steady structure, achieves good positioning and sealing effects on a cavity wall of a left atrial appendage, is easy to repeatedly positione, and can be recovered before being separated from a conveyer; and when an operation is conducted, a positioning area can be selected according to the practical shape and the practical size of the left atrial appendage of a patient, thereby reducing risks of the operation.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to the stopper that a kind of method that gets involved through the microcatheter technology utilization is sent to the selected position of human body, to be used to prevent to cause owing to atrial fibrillation the disease of left auricle generation thrombosis so that apoplexy.
Background technology
Treating disease through the method for microcatheter technology utilization intervention is to utilize increasing Therapeutic Method at present, and the conduit interventional therapy method is placed various materials, apparatus and medicine heart, the artery and vein vascular to human body.
Such as place the defect of stopper (like atrial septal defect (ASD) stopper, ventricular septal defect (VSD) stopper, patent ductus arteriosus (PDA) stopper, patent foramen ovale (PFO) stopper etc.) through the conduit interventional method to heart; Shutoff is damaged, with the treatment congenital heart disease.This is a kind of apparatus of using comparative maturity, through being threaded between apparatus and the pusher, is transported to predetermined position by pusher, frees screw thread then to break off being connected of apparatus and pusher.For this apparatus, it is threaded and can realizes that apparatus and the reliable and secure of pusher are connected, and can realize controllable release simultaneously; If promptly the size Selection of apparatus is improper; Or apparatus launches when bad, can be once more in the apparatus income delivery conduit, and the suitable apparatus that renews; Reappose last reliable release.
For another example, place stopper in left auricle through 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 gets into the blood flow of left auricle, can eliminate owing to atrial fibrillation causes the thrombosed risk of left auricle, prevention of stroke.At present such apparatus all is to be connected with carrier through screw thread usually, and apparatus itself divides from structure and is roughly two classes greatly, and stopper formula left atrial appendage occlusion device is as depicted in figs. 1 and 2, fill in disc type left atrial appendage occlusion device such as Fig. 3.In Fig. 1-3,1 is left atrium (LA), and 2 is left auricle (LAA); 3 is left auricle chamber wall; 4 is stopper formula left atrial appendage occlusion device choked flow film, and 5 is stopper formula left atrial appendage occlusion device body, and 6 is the pit shape gap that forms between stopper formula left atrial appendage occlusion device and the left auricle; 7 are plug disc type left atrial appendage occlusion device body, the 8 choked flow films for plug disc type left atrial appendage occlusion device.Stopper formula left atrial appendage occlusion device is a spherical cylindric or cone shape stopper of making product a band choked flow film; Stopper has certain elasticity; Can in left auricle, be out of shape; In the hope of adapting to the shape of left auricle cavity, reach the purpose of filling left auricle, and the choked flow film on the stopper can blocking blood flow.Plug disc type left atrial appendage occlusion device is the complex of cylindrical plug and plate-shape part, on dish, is sewed with the choked flow thin film simultaneously; In the left auricle cavity that cylindrical plug partly is placed, with fixing whole apparatus; Plate-shape partly covers the oral area of left auricle, is used for occlude blood and flows into left auricle.
In the time of in place the heart of these apparatuses to human body, artery and vein vascular, left auricle through 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 predetermined position simultaneously 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 of which end arrives predetermined position, and the other end is stayed external, utilizes conduit and pusher that apparatus is sent to predetermined position then.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 pusher to pass through passage that conduit sets up the end of apparatus guiding catheter, when apparatus when the end of conduit all exposes, apparatus will break off with pusher, to realize the release of apparatus.
Present left atrial appendage occlusion utensil has numerous limitation.
1, the limitation of stopper formula left atrial appendage occlusion device is following:
(a) when this apparatus is filled in left auricle; Because left auricle oral area shape is very irregular, and the deformability of this apparatus is limited, form a lot of little pit shape gaps 6 (as shown in Figure 2) between the oral area outer rim of its overlay film part and left auricle; Be equivalent to form a lot of synthetical left auricle; Because shutoff left auricle oral area is difficult to eliminate owing to atrial fibrillation causes left auricle portion forming thrombosis fully, the thrombus source property of " artificial left auricle " apparatus can make the thrombotic probability of left auricle increase on the contrary.
(b) anatomical structure of everyone left auricle is different, have elliptoid, peanut shape or the like, multi-cavity is also arranged, the anatomical structure that stopper formula left atrial appendage occlusion device can not adapt to all left auricle fully can't realize held stationary.
(c) degree of depth of everyone left auricle is different, and the length of the left atrial appendage occlusion device of stopper formula can't adapt to the left auricle of the various degree of depth fully.
2, plug disc type left atrial appendage occlusion general ability is as follows sex-limited:
(a) plug disc type left atrial appendage occlusion device is a compound integral, and wherein plug portion and disc part can not be out of shape fully independently, after stopper is filled in left auricle; Its shape need be complied with the internal structure of left auricle; When disc partly is buckled in the oral area of left auricle, can receive the tractive of plug portion like this, make the disc part can not fully be fitted in the oral area of left auricle; So blocking blood flow is difficult to the plugging effect that reaches best fully.
(b) because the difference of the anatomical structure shape of everyone left auricle; Need in the inner chamber of left auricle, find best fixed position; So need plug portion can on different depth, realize best fixing; But because the length adjustment of plug portion and disc part is limited, so all be difficult to realize optimal fixation and bloodstream blocking for most of left auricle.
3 moreover, the part that most of left atrial appendage occlusion device is filled in left auricle be the sealing structure, be difficult to adapt to different left auricle cavity shapes.
4, in addition; Need on stopper, increase anchor thorn structure with fixing left atrial appendage occlusion device; But the anchor of existing product thorn unreasonable structure; Anchor thorn like some left atrial appendage occlusion device is that several filaments are assemblied on the stopper through suture, and is difficult to thrust in the left auricle wall under the situation that this anchor thorn pushes in the left auricle cavity, can't realize held stationary; Though the anchor of other left atrial appendage occlusion device thorn has enough puncture forces, hinders the recovery of stopper, can not realize resetting.
The utility model content
But this utility model technical problem to be solved be to provide a kind of occlude blood flow into the left auricle effect good, at the left atrial appendage occlusion device of left auricle cavity held stationary and resetting; Can not reach best plugging effect to solve left atrial appendage occlusion device of the prior art; Fixing unstable at the left auricle cavity, and can not realize problem such as resetting.
The technical scheme that technical problem adopted that solves this utility model is: a kind of left atrial appendage occlusion device; It comprises the rubber-like closed disk; Said left atrial appendage occlusion device also comprises the elastic mounts that is connected and is positioned at said closed disk one side with said closed disk; Said fixed mount comprises an end, center that is connected with said closed disk and a plurality of interconnective and crooked support bar, and at least one anchor thorn wherein is set near the end of at least one support bar, and said anchor thorn is towards said closed disk.
As the further improvement of this utility model, the end, center of said fixed mount further comprises flexible connecting structure, and said fixed mount is connected with said closed disk through said flexible connecting structure.
As the further improvement of this utility model, said flexible connecting structure is a kind of structure among the flexible joint of rubber-like helical form, multi-thread shape flexible piece, the spring.
As the further improvement of this utility model, said closed disk is that two ends are fixed netted, and on said closed disk, being provided with material is the choked flow film of PET or PTFE material.
As the further improvement of this utility model, the length of the anchor thorn on the said support bar is the 1-2 millimeter, and the root of said anchor thorn is located on the support bar, and outwards open automatically at the tip of said anchor thorn, and said anchor thorn just is compressed and is recovered on the support bar.
As the further improvement of this utility model, the end of said support bar is provided with bulb.
As the further improvement of this utility model, be provided with the bending section of U-shaped between the end of said support bar and the anchor thorn.
As the further improvement of this utility model, an end of said closed disk is equipped with the threaded connector that is connected with carrier, and the other end of said closed disk is received on the said fixed mount.
As the further improvement of this utility model, said closed disk and said fixed mount are processed by Nitinol.
Further improvement as this utility model; Support bar on the said fixed mount is radial symmetric arrays; Send from end, said center and along inclined shaft direction flare up umbrella, make a segment base on the support bar originally be parallel to the axis of said fixed mount through bending then.
Compared with prior art, this utility model possesses following advantage:
1, this left atrial appendage occlusion device Stability Analysis of Structures adapts to the multiple structure and the multiple size of left auricle cavity to greatest extent.
2, guarantee location more stable on the wall of left auricle chamber and, take into account the location and seal two balances between the crucial effect in the tighter sealing of left auricle mouth.
3, the easy resetting of this left atrial appendage occlusion device, also recyclable before breaking away from carrier; During operation technique, form and the selected positioning area of size that can be actual according to patient's left auricle needn't be selected inappropriate positioning area because of the limitation of apparatus, reduce the risk of operation.
4, operating procedure is simply smooth and easy, reduces the number of times of doctor's resetting to greatest extent, reduces the damage to patient.
5, this left atrial appendage occlusion device can mate less sheath pipe, reduces the damage of sheath pipe to the patient's blood vessel wall.
Description of drawings
To combine accompanying drawing and embodiment that this utility model is described further below, in the accompanying drawing:
Fig. 1 is the position view of stopper formula left atrial appendage occlusion device in heart and left auricle anatomical structure.
Fig. 2 is for to see the position view of stopper formula left atrial appendage occlusion device left auricle from left auricle mouth direction.
Fig. 3 is the position view of plug disc type left atrial appendage occlusion device in heart and left auricle anatomical structure.
Fig. 4 is the position view of this utility model left atrial appendage occlusion device in heart and left auricle anatomical structure, and wherein fixed mount is fixed on the darker position of left auricle.
Fig. 5 is the position view of this utility model left atrial appendage occlusion device in heart and left auricle anatomical structure, and wherein fixed mount is fixed on the more shallow position of left auricle.
Fig. 6 is the front view of first embodiment of this utility model left atrial appendage occlusion device.
Fig. 7 is the vertical view of first embodiment of this utility model left atrial appendage occlusion device.
Fig. 8 is the axonometric chart of first embodiment of this utility model left atrial appendage occlusion device.
Fig. 9 is the front view of second embodiment of this utility model left atrial appendage occlusion device.
Figure 10 is the axonometric chart of second embodiment of this utility model left atrial appendage occlusion device.
Figure 11 is the partial enlarged drawing of Figure 10.
Figure 12 is the front view of the 3rd embodiment of this utility model left atrial appendage occlusion device.
Figure 13 is the axonometric chart of the 3rd embodiment of this utility model left atrial appendage occlusion device.
Figure 14 is the partial enlarged drawing of Figure 13.
Figure 15 is the terminal enlarged drawing of support bar on the fixed mount among Figure 13.
Figure 16 is the front view of the 4th embodiment of this utility model left atrial appendage occlusion device.
Figure 17 is the axonometric chart of the 4th embodiment of this utility model left atrial appendage occlusion device.
Figure 18 is the partial enlarged drawing of Figure 17.
The terminal direction of motion sketch map of support bar when Figure 19 advances the sheath pipe and goes out the sheath pipe for the fixed mount of the 4th embodiment of this utility model left atrial appendage occlusion device.
Figure 20 has just advanced the sheath pipe for the fixed mount of the 4th embodiment of this utility model left atrial appendage occlusion device or has gone out the view of sheath pipe.
Figure 21 has advanced the sheath pipe for most of support bar of the fixed mount of the 4th embodiment of this utility model left atrial appendage occlusion device or has gone out the view of sheath pipe.
Figure 22 is the terminal view of preparing the sheath pipe or going out the sheath pipe of the support bar of the fixed mount of the 4th embodiment of this utility model left atrial appendage occlusion device.
Figure 23 is the view of support bar end in the sheath pipe of the 4th embodiment of this utility model left atrial appendage occlusion device.
Figure 24 has just advanced the sheath pipe for the fixed mount of the 5th embodiment of this utility model left atrial appendage occlusion device or has gone out the view of sheath pipe.
The fraction that Figure 25 has advanced sheath pipe or support bar for most of support bar of the fixed mount of the 5th embodiment of this utility model left atrial appendage occlusion device will go out the view of sheath pipe.
Figure 26 prepares sheath pipe into near the U-shaped bending section the support bar end of the fixed mount of the 5th embodiment of this utility model left atrial appendage occlusion device or has gone out the view of sheath pipe.
The specific embodiment
For the purpose, technical scheme and the advantage that make this utility model is clearer,, this utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation this utility model, and be not used in qualification this utility model.
To combine accompanying drawing and a plurality of specific embodiment that this utility model is explained further details below.
First embodiment:
Like Fig. 6, Fig. 7 and shown in Figure 8, the left atrial appendage occlusion device 100 of this utility model first embodiment comprises closed disk 11 and the fixed mount 111 that is connected with this closed disk 11.Wherein, this fixed mount 111 comprises a plurality of support bars that are connected 121, and fixed mount 111 is to cut out a plurality of support bars 121 with a NiTi pipe to strut with mould then, utilizes heat treated mode to be shaped into shape as shown in Figure 6.These closed disk 11 usefulness titanium-nickel wires are made into mesh grid 10 through the mode of braiding; It is discoid to utilize heat treated mode to do, and fixes with sleeve pipe at two ends, and the threaded connector 15 that is connected with carrier is loaded onto in welding at one end the sleeve pipe then; The other end of closed disk 11 is a stiff end; This stiff end telescopic joint to the joint 16 of fixed mount 111 sewed on choked flow film (PTFE or PET film) in closed disk 11 inside with medical suture, and these closed disk 11 vertical views are with reference to Fig. 7.Though first embodiment adopts nine support bars 12, require to select other number according to mechanical property and dimensions, like the six roots of sensation, eight, 12, and ten six roots of sensation etc.These nine support bars 121 are radial symmetric arrays, along inclined shaft direction flare up umbrella, make the end 141 of support bar 121 be basically parallel to the axis of fixed mount 111 through the U-shaped bending from the center then.Each root support bar 121 is divided into two branches near its bending section, two branches of adjacent two support bars 121 link into an integrated entity through the U-shaped bending again, finally are pooled on the joint 16 of fixed mount 111.This joint 16 is at a uncut end of NiTi pipe, and is positioned at the center of fixed mount 111, to constitute the end, center that is connected with this closed disk 11.When cutting; Anchor thorn 131 near the end 141 of support bar 121 also will be cut out, and utilizes corresponding mould to make the shape of this anchor thorn 131, these anchor thorn 131 ends 141 towards support bar 121; The root of anchor thorn 131 is on support bar 121; Outwards open automatically at the tip of this anchor thorn 131, compress this anchor thorn 131 after, this anchor thorn 131 is recovered on this support bar 121.The length of anchor thorn 131 is suitable, has both guaranteed enough fixed effects, again not because of the excessive risk that increases of the degree of depth of thrusting left auricle, such as the anchor thorn of 1-2 millimeters long.Weld the joint 16 of the stiff end of closed disk 11 and fixed mount 111 at last.This closed disk 11 has good flexible; And support bar 121 has the certain deformation ability; Can play to a certain degree adjusting closed disk 11 and the relative position of fixed mount 111 and the effect of relative distance, like this, the anchor thorn 131 on the support bar 121 is towards closed disk 11; Anchor thorn 131 just can be fixed on the different depth position of left auricle, guarantees the sealing of 11 pairs of left auricle oral areas of closed disk simultaneously.
Second embodiment:
Like Fig. 9, Figure 10 and shown in Figure 11, the left atrial appendage occlusion device 200 of this utility model second embodiment comprises closed disk 11 and the fixed mount 112 that is connected with this closed disk 11.These closed disk 11 usefulness titanium-nickel wires are weaved into netted through the mode of braiding; It is discoid to utilize heat treated mode to do; Fix with sleeve pipe at two ends, the threaded connector 15 that is connected with carrier is loaded onto in welding on the sleeve pipe at one end, sews on choked flow film (PTFE or PET film) in these closed disk 11 inside with medical suture then; The other end of this closed disk 11 is a stiff end; The telescopic joint end, center to fixed mount 112 of this stiff end, this end, center comprises flexible joint 17, the vertical view of this closed disk 11 shown in Figure 7 as among first embodiment.Utilize heat treated mode to become the support bar 122 of fixed mount 112 surely with the NiTi pipe then through cutting; Anchor thorn 132 when cutting on the fixed mount 112 also will be cut out, and utilizes corresponding mould to make the shape of anchor thorn 132, anchor thorn 132 ends 142 towards support bar 122; When cutting NiTi pipe, also will cut out flexible joint 17, this flexible joint 17 comprises a rubber-like helicoidal structure, this helical structure between the support bar 122 of the stiff end sleeve pipe of closed disk 11 and fixed mount 112, it is local amplify afterwards shown in figure 11.Couple together the mode of flexible joint 17 usefulness of the stiff end sleeve pipe of closed disk 11 and fixed mount 112 welding at last.Flexible joint 17 has better deformability; Can regulate the relative position and the relative distance of closed disk 11 and fixed mount 112 in a wider context; Like this; The anchor thorn 132 of support bar 122 is towards closed disk 11, and anchor thorn 132 can be fixed on the different depth position of left auricle more reliably, guarantees the sealing of 11 pairs of left auricle oral areas of closed disk simultaneously.
The 3rd embodiment:
To shown in Figure 15, the left atrial appendage occlusion device 300 of this utility model the 3rd embodiment comprises closed disk 11 and the fixed mount 113 that is connected with this closed disk 11 like Figure 12.Closed disk 11 usefulness titanium-nickel wires are weaved into netted through the mode of braiding; It is discoid to utilize heat treated mode to do; Fix with sleeve pipe at two ends, the threaded connector 15 that is connected with carrier is loaded onto in welding on the sleeve pipe at one end, sews on choked flow film (PTFE or PET film) in these closed disk 11 inside with medical suture then; The other end of this closed disk 11 is a stiff end; The sleeve pipe of this stiff end also is connected with the end, center of this fixed mount 113, and this end, center comprises that connects a spring 18, the vertical view of this closed disk 11 shown in Figure 7 as among first embodiment.Utilize heat treated mode to become the support bar 123 of fixed mount 113 surely with the NiTi pipe then through cutting, utilize hot melting mode to make bulb 19 to the end of support bar 123, shown in figure 15, this can reduce the damage of stopper to left auricle; Anchor thorn 133 when cutting on this fixed mount 113 also will be cut out, and utilizes corresponding mould to make the shape of anchor thorn 133, anchor thorn 133 ends 143 towards support bar 123; During cutting NiTi pipe, the other end away from bulb 19 of fixed mount 113 keeps very short one section NiTi pipe, prevents that support bar 123 is separated from each other at this end.Connection spring 18 utilizes single or many titanium-nickel wires form helicoidal structure through heat treated mode, and its local back of amplifying is shown in figure 14.Couple together with fixed mount 113 closed disk 11 through being connected spring 18 at last, connect the stiff end sleeve pipe welding of an end and the closed disk 11 of spring 18, the end welding of the other end of connection spring 18 and the reservation NiTi pipe of fixed mount 113.Connect spring 18 and have more intense deformability; The relative position and the relative distance of adjusted closed disk 11 and fixed mount 113 to a great extent; Like this; The anchor thorn 133 of support bar 123 is towards closed disk 11, and anchor thorn 133 can be fixed on the different depth position of left auricle more reliably, guarantees the sealing of 11 pairs of left auricle oral areas of closed disk simultaneously.
The 4th embodiment:
To shown in Figure 180, the left atrial appendage occlusion device 400 of this utility model the 4th embodiment comprises closed disk 11 and the fixed mount 114 that is connected with closed disk 11 like Figure 16.These closed disk 11 usefulness titanium-nickel wires are weaved into netted through the mode of braiding; It is discoid to utilize heat treated mode to do; Fix with sleeve pipe at two ends, the threaded connector 15 that is connected with carrier is loaded onto in welding on the sleeve pipe at one end, sews on choked flow film (PTFE or PET film) in these closed disk 11 inside with medical suture then; The other end of this closed disk 11 is a stiff end; The sleeve pipe of this stiff end also is connected with the end, center of this fixed mount 113, and this end, center comprises a multi-thread shape flexible piece 20, the vertical view of this closed disk 11 shown in Figure 7 as among first embodiment.Utilize heat treated mode to become the support bar 124 of fixed mount 114 surely with the NiTi pipe then through cutting; Utilize hot melting mode to make bulb 194 to the end of support bar 124, shown in figure 16, this can reduce the damage of stopper to left auricle; Anchor thorn 134 when cutting on the fixed mount 114 also will be cut out, and utilizes corresponding mould to make the shape of anchor thorn 134, anchor thorn 134 ends 144 towards support bar 124; During cutting NiTi pipe, the other end away from bulb 194 of this fixed mount 114 keeps very short one section NiTi pipe, prevents that support bar 124 is separated from each other at this end.Multi-thread shape flexible piece 20 utilizes four titanium-nickel wires, and (number that is appreciated that titanium-nickel wire can be less than or more than four; Also can use other tinsel, like stainless steel silk; Every titanium-nickel wire also can change many compound NiTi ropes into) bend to drum type rib structure as shown in Figure 18 through heat treated mode, because having super-elasticity, titanium-nickel wire can the go-and-retum distance of multi-thread shape flexible piece 20 be drawn back.Certainly; Multi-thread shape flexible piece 20 also can adopt has other identical known linear enclosed construction of function; As long as it is fixing that every elastic yarn is all gathered at the two ends of this structure respectively symmetrically, and the two ends of this structure possess following characteristics simultaneously: can be mobile relatively in the scope that elastic yarn allows, under naturalness, keep short spacing; More stable support force is provided, under tension, also can prolongs spacing.An end of multi-thread shape flexible piece 20 and the welding of the stiff end sleeve pipe of closed disk 11, the end welding of the reservation NiTi pipe of the other end of multi-thread shape flexible piece 20 and fixed mount 114 couple together closed disk 11 and fixed mount 114 through multi-thread shape flexible piece 20 at last.Multi-thread shape flexible piece 20 has more intense deformability; The relative position and the relative distance of adjusted closed disk 11 and fixed mount 114 to a great extent; Like this, the anchor of support bar 124 thorn 134 is towards closed disk 11, and anchor thorn 134 can be fixed on the different depth position of left auricle more reliably; Guarantee the sealing of 11 pairs of left auricle oral areas of closed disk simultaneously, like Fig. 4 and shown in Figure 5.The position view of the left atrial appendage occlusion device of other embodiment in this utility model in heart and left auricle anatomical structure is similar to Fig. 4 and Fig. 5.
Extremely shown in Figure 23 like Figure 19; The entering sheath pipe 22 of this fixed mount 114 and have following characteristics: under the effect of the connecting rod 21 of carrier from 22 li processes of coming out of sheath pipe; When the fixed mount that is in deployed condition 114 will be taken in the sheath pipe 22; To moving, it gets into different phase such as Figure 20, Figure 21, Figure 22, and shown in Figure 23 of sheath pipe 22 to the end of support bar 124 along the A shown in Figure 19, and the terminal bulb 194 of each support bar 124 can be done a upset with anchor thorn 134; When the fixed mount 114 in being in sheath pipe 22 will be pushed out sheath pipe 22; The end of support bar 124 along the B shown in Figure 19 to moving; Opposite with each stage that gets into sheath pipe 22; Its from 22 li different phases of coming out of sheath pipe can by as Figure 23, Figure 22, Figure 21, and the order of Figure 20 carry out successively, the terminal bulb 194 of each support bar 124 also can be done with anchor thorn 134 and advance an opposite upset of sheath pipe.Such design; Both can make the anchor thorn 134 that thrusts the left auricle wall help preventing that towards the left auricle oral area fixed mount 114 from coming off; When need reclaiming this left atrial appendage occlusion device 400, anchor thorn 134 also can reverse directions and can not damage left auricle and can successfully get in the sheath pipe 22.Therefore; The left atrial appendage occlusion device 400 of present embodiment can guarantee the good resetting property of fixed mount 114 in left auricle; Promptly guarantee the good resetting property of whole left atrial appendage occlusion device; Reduce the damage of apparatus simultaneously, also make this apparatus be applicable to that littler sheath pipe is to make things convenient for operation technique left auricle.
The 5th embodiment:
Extremely shown in Figure 26 like Figure 24; Be the basis with the 3rd embodiment or the 4th embodiment; The difference of the 5th embodiment and above-mentioned the 3rd embodiment or the 4th embodiment is fixed mount; The fixed mount 115 of the 5th embodiment is roughly similar with the fixed mount of the 3rd embodiment or the 4th embodiment, and its difference is: increase a U-shaped bending section 235 on each support bar 125 of the fixed mount 115 of the 5th embodiment, this U-shaped bending section 235 stings between 135 at support bar 125 terminal bulb 195 and anchors.A part of fixed mount 115 of present embodiment shrinks and gets into sheath pipe 22, and the state that the end of support bar 125 remains on outside the sheath pipe 22 is shown in figure 24.At this moment, anchor thorn 135 points to the closed disk 11 (shunk into sheath pipe 22 within) and the tendency axle outside slightly basically, the center curvatures of U-shaped bending section 235 near the beginning anchor thorn 135 towards fixed mount 115, and bead 195 is fixed on the end of U-shaped bending section 235.The end of support bar 125 is harder; There is disadvantageous stimulation contact site to left auricle; Therefore on support bar 125, increase U-shaped bending section 235, the end of support bar 125 and left auricle are disengaged, reduce in left auricle open stopper to a greater degree the damage of left auricle.When making fixed mount 115, utilize the shaping mould of fixed mount 115, through heat treated mode, directly be processed into a U-shaped bending section 235 with one section on the support bar 125.
The fixed mount 115 turnover sheath pipes 22 of present embodiment are like Figure 24, Figure 25, Figure 26 and Figure 22, shown in Figure 23; Have following characteristics: under the effect of the connecting rod 21 of carrier; When the fixed mount that is in deployed condition 115 will be taken in the sheath pipe 22; The end of support bar 125 can be along the C shown in Figure 24 to moving; Its different phase of advancing sheath pipe 22 is docile and obedient preface such as Figure 24, Figure 25, Figure 26, Figure 22, and shown in Figure 23, and the terminal bulb 195 of each support bar 125 all can overturn with anchor thorn 135, and the upset amplitude of terminal bulb 195 is greater than the upset amplitude of anchor thorn 135; When the fixed mount 115 in being in sheath pipe 22 will be pushed out sheath pipe 22; The end of support bar 125 can along along the D shown in Figure 24 to moving; Opposite with each stage of advancing sheath pipe 22; Its go out sheath pipe 22 different phase can by as Figure 23, Figure 22, Figure 26, Figure 25, and the order of Figure 24 carry out, the terminal bulb 195 of each support bar 125 and anchor thorn 135 also can be done the upset opposite with advancing sheath pipe 22, the upset amplitude of terminal bulb 195 is greater than the upset amplitude of anchor thorn 135.Such design makes present embodiment have more advantages; Anchor thorn 135 on the support bar 125 of this fixed mount 115 has structure identical with previous embodiment and technique effect, and near support bar 125 terminal U-shaped bending sections 235 can be avoided support bar damage left auricle better.
The state that near the support bar 125 of the fixed mount 115 of the 5th embodiment is terminal U-shaped bending sections 235 are straightened is with shown in Figure 22 identical, and support bar 125 terminal complete states in sheath pipe 22 are with shown in Figure 23 identical.
In sum, this left atrial appendage occlusion device comprise have certain elasticity and in the fixed mount that the closed disk of thin film is housed and comprises a plurality of support bars directly be formed by connecting; Perhaps comprise have certain elasticity and in be equipped with thin film closed disk and through flexible connecting structure and fixed mount that have a plurality of support bars that be connected with this closed disk, integrally-built stability is better; The anchor thorn that has on this support bar can be done 180 ° of upsets with support bar; Can strengthen the bed knife of anchor thorn, reduce the damage to left auricle when the recovery stopper of anchor thorn, also help the resetting of apparatus; The left auricle that can adapt to multiple structure is realized stable position; The end of support bar can be realized 180 ° or 360 ° of upsets; The terminal bulb of support bar guarantees the smooth location of fixed mount and prevents that the end of support bar from puncturing left auricle; Near the support bar end U-shaped bending section further reduces the damage of stopper to left auricle; But the flexible connecting structure helical structure also can be multi-thread shape structure, guarantees seal disc and the relative position of fixed mount and effective adjusting of relative distance, can adapt to the location requirement of the different depth of multiple structure left auricle.
Therefore, the utlity model has following advantage:
1, this left atrial appendage occlusion device Stability Analysis of Structures adapts to the multiple structure and the multiple size of left auricle cavity to greatest extent.
2, guarantee location more stable on the wall of left auricle chamber and, take into account the location and seal two balances between the crucial effect in the tighter sealing of left auricle mouth.
3, the easy resetting of this left atrial appendage occlusion device, also recyclable before breaking away from carrier; During operation technique, form and the selected positioning area of size that can be actual according to patient's left auricle needn't be selected inappropriate positioning area because of the limitation of apparatus, reduce the risk of operation.
4, operating procedure is simply smooth and easy, reduces the number of times of doctor's resetting to greatest extent, reduces the damage to patient.
5, this left atrial appendage occlusion device can mate less sheath pipe, reduces the damage of sheath pipe to the patient's blood vessel wall.
The above is merely the preferred embodiment of this utility model; Not in order to restriction this utility model; Any modification of being done within all spirit and principles at this utility model, be equal to replacement and improvement etc., all should be included within the protection domain of this utility model.
Claims (10)
1. left atrial appendage occlusion device; It comprises the rubber-like closed disk; It is characterized in that: said left atrial appendage occlusion device also comprises the elastic mounts that is connected and is positioned at said closed disk one side with said closed disk; Said fixed mount comprises an end, center that is connected with said closed disk and a plurality of interconnective and crooked support bar, and at least one anchor thorn wherein is set near the end of at least one support bar, and said anchor thorn is towards said closed disk.
2. left atrial appendage occlusion device as claimed in claim 1 is characterized in that: the end, center of said fixed mount further comprises flexible connecting structure, and said fixed mount is connected with said closed disk through said flexible connecting structure.
3. left atrial appendage occlusion device as claimed in claim 2 is characterized in that: said flexible connecting structure is a kind of structure among the flexible joint of rubber-like helical form, multi-thread shape flexible piece, the spring.
4. left atrial appendage occlusion device as claimed in claim 1 is characterized in that: said closed disk is that two ends are fixed netted, and on said closed disk, being provided with material is the choked flow film of PET or PTFE material.
5. left atrial appendage occlusion device as claimed in claim 1; It is characterized in that: the length of the anchor thorn on the said support bar is the 1-2 millimeter; The root of said anchor thorn is located on the support bar, and outwards open automatically at the tip of said anchor thorn, and said anchor thorn just is compressed and is recovered on the support bar.
6. left atrial appendage occlusion device as claimed in claim 1 is characterized in that: the end of said support bar is provided with bulb.
7. left atrial appendage occlusion device as claimed in claim 1 is characterized in that: the bending section that is provided with U-shaped between the end of said support bar and the anchor thorn.
8. left atrial appendage occlusion device as claimed in claim 1 is characterized in that: an end of said closed disk is equipped with the threaded connector that is connected with carrier, and the other end of said closed disk is received on the said fixed mount.
9. left atrial appendage occlusion device as claimed in claim 1 is characterized in that: said closed disk and said fixed mount are processed by Nitinol.
10. left atrial appendage occlusion device as claimed in claim 1; It is characterized in that: the support bar on the said fixed mount is radial symmetric arrays; Send from end, said center and along inclined shaft direction flare up umbrella, make a segment base on the support bar originally be parallel to the axis of said fixed mount through bending then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120182834.0U CN202143640U (en) | 2011-06-01 | 2011-06-01 | Left atrial appendage occluder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120182834.0U CN202143640U (en) | 2011-06-01 | 2011-06-01 | Left atrial appendage occluder |
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| Publication Number | Publication Date |
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| CN202143640U true CN202143640U (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120182834.0U Expired - Lifetime CN202143640U (en) | 2011-06-01 | 2011-06-01 | Left atrial appendage occluder |
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| CN (1) | CN202143640U (en) |
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