WO2003011195A2 - Ensemble permettant la mise en place d'une valve prothetique dans un conduit corporel - Google Patents
Ensemble permettant la mise en place d'une valve prothetique dans un conduit corporel Download PDFInfo
- Publication number
- WO2003011195A2 WO2003011195A2 PCT/FR2002/002745 FR0202745W WO03011195A2 WO 2003011195 A2 WO2003011195 A2 WO 2003011195A2 FR 0202745 W FR0202745 W FR 0202745W WO 03011195 A2 WO03011195 A2 WO 03011195A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- assembly
- tubular portion
- valve
- support
- deployment
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000004873 anchoring Methods 0.000 claims description 29
- 238000002513 implantation Methods 0.000 claims description 26
- 239000008280 blood Substances 0.000 claims description 9
- 210000004369 blood Anatomy 0.000 claims description 9
- 210000001765 aortic valve Anatomy 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 3
- 239000012781 shape memory material Substances 0.000 claims description 3
- 239000003364 biologic glue Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 239000003292 glue Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 14
- 210000000709 aorta Anatomy 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 210000003484 anatomy Anatomy 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 229920004934 Dacron® Polymers 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 210000003709 heart valve Anatomy 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 210000004115 mitral valve Anatomy 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003516 pericardium Anatomy 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000011477 surgical intervention Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
- A61F2/2418—Scaffolds therefor, e.g. support stents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
- A61F2/243—Deployment by mechanical expansion
- A61F2/2433—Deployment by mechanical expansion using balloon catheter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B17/0644—Surgical staples, i.e. penetrating the tissue penetrating the tissue, deformable to closed position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
- A61B2017/00557—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated inflatable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
- A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0073—Quadric-shaped
- A61F2230/0078—Quadric-shaped hyperboloidal
Definitions
- the present invention relates to an assembly allowing the installation of a prosthetic valve in a body conduit, in particular a heart valve and in particular an aortic valve.
- the installation of the stent thus allows the mounting of the valve in the body conduit, eliminating the need for an approach from the outside and therefore for direct surgical intervention.
- This technique has the essential drawbacks of inducing a risk of damage to the valve by the balloon used to achieve the expansion of the stent, and of limiting the expansion force which it is possible to impart to the stent.
- This limitation has repercussions on the anchoring of the stent, making it possible to move said assembly.
- This limitation also has repercussions on the sealing of the stent at the level of the valve ring, which is particularly affected when calcified zones give the valve ring an irregular shape and / or a certain rigidity.
- Expansion of a balloon can also lead to damage to the body duct, especially when it is a blood vessel.
- the body duct to be fitted may, at the implantation site, not have a perfectly circular cross section, in particular when the native valve is preserved and this valve, or the valve ring, includes calcified areas. Whatever the degree of expansion of the stent, the circular shape of this stent may then not be adapted to the specific anatomy of the implantation site. This may result in a leak in the implanted valve.
- the stent has a certain rigidity, which induces rigidity of the implantation catheter. This rigidity can make it difficult for this catheter to progress to the implantation site.
- Another disadvantage of the prior art is that it directly links the commissures of the valves to the stent. As a result, an expansion of the stent, and therefore of the valve, different from that provided may result in poor coaptation of the valves and therefore a faulty operation of the valve.
- the stent must therefore be subject to a predetermined expansion which prevents, or makes difficult, the adaptation of this stent to anatomical variability.
- the prior art also has the disadvantages, in the event of implantation of an aortic valve, of inducing a risk of blockage of the coronary ostia.
- the present invention aims to remedy these various drawbacks.
- the assembly which it relates to comprises, in a manner known per se, the prosthetic valve to be implanted and a support receiving this valve, the valve and the support being shaped so as to be able to adopt a position of radial contraction, which allows their insertion into the body duct to be fitted using insertion / deployment means, and a radial deployment position, in which the support is immobilized relative to the wall of the body duct to be fitted.
- the support comprises:
- At least one tubular portion of flexible material slightly stretchable in the circumferential direction, which has, in its deployed position, a dimension in the circumferential direction corresponding substantially to the dimension in the circumferential direction of the location of the bodily duct opposite which this tubular portion must be implanted; means for fixing this tubular portion to the wall of the body conduit, and
- a plurality of elongated reinforcing elements arranged on the circumference of said tubular portion and connected to this tubular portion independently of each other; the valve is at least partially connected to these elongated reinforcing elements, in particular at the commissures of its valves, and these elongated reinforcing elements jointly form, in the deployed position, a structure having a predetermined diameter which ensures adequate deployment of this valve.
- the support according to the invention is thus not formed by an expandable stent bearing against friction against the wall of the body duct to be fitted, but is formed (i) by at least one flexible tubular portion which is circumferentially weakly stretched, provided with means for attachment to the wall of the body conduit, and (ii) by a valve mounting structure, deployed by this or these tubular portions.
- the latter are the only object of active deployment, carried out in particular by means of one or more inflatable balloons, at the level of their zones provided with said fixing means; the valves of the valve are connected to said elongated reinforcing elements and are therefore placed on a portion of the support not having to be stressed by the deployment means, so that the risk of deterioration of these valves by these deployment means is eliminated.
- the deployment of the tubular portion (s) does not require as great a radial force as that necessary for the deployment of a stent, and the low stretchability of this or these tubular portion (s) beyond their deployment position eliminates the risks deterioration of the body duct resulting from the use of inflatable balloons.
- the flexible structure of the tubular portion (s) also allows them to perfectly adapt to the specific anatomy of the implantation site, particularly when the latter is not circular in cross section due to the presence of calcified areas. .
- the support overall has a significantly lower longitudinal rigidity than that of a stent, which notably facilitates the progression of the implantation catheter to the implantation site.
- commissures of the valves are not connected to an expandable zone, and the structure formed by said elongated reinforcing elements ensures adequate deployment of these valves.
- the valve can be made of biological tissue or of synthetic material such as for example a polymer. It may have a base ring allowing its tight connection, in particular by suturing, to said tubular portion or to one of said tubular portions. Said tubular portion, or a peripheral wall which the valve comprises, may have lateral openings so as to allow a natural flow of blood towards the coronary ostia, without risk of stagnation. Preferably, said one or more tubular portions have at least one inflatable peripheral chamber, which can be inflated so as to form a seal ensuring the seal between this tubular portion and the wall of the body conduit to be fitted.
- the proximal zone of the tubular portion, or of the proximal tubular portion in the case of a plurality of tubular portions, may have a frustoconical shape adapted to bear against the wall of the ventricle.
- the tubular portion (s) may consist of a biological or synthetic material, in particular a polymer or a tissue of fibers known under the name "dacron".
- Said fixing means are preferably constituted by anchoring clips having anchoring branches, these anchoring branches being inserted into the wall of the body conduit to be fitted at the end of deployment of this or these tubular portions.
- These staples can be plastically deformable; means may then be provided for deploying the anchoring branches of these staples in a non-radial manner, in particular obliquely or along a curved path, in order to reinforce the strength of the anchoring obtained.
- At least one of these staples can be made of a shape memory material such as the alloy of nickel and titanium known under the name "NITINOL".
- NITINOL the alloy of nickel and titanium known under the name "NITINOL”.
- Such a clip can then adopt, before implantation, an insertion configuration, in which its anchoring branches are oriented substantially radially with respect to the tubular portion so as to be able to be inserted into the wall of the conduit, and an anchoring configuration, in which these same anchoring branches orient in a non-radial manner and / or bend in order to anchor the staples in the wall of the body conduit to be fitted.
- the fixing means can also comprise a biological adhesive, which can be contained in ruptible vesicles placed on the radially external face of the tubular portion or portions. These vesicles rupture during their crushing between the tubular portion (s) and the wall of the body duct, and thus allow the adhesive to be released.
- Each elongate reinforcing element advantageously has a curved shape and is arranged with its convex side facing radially towards the inside of the support, so that this support has, at its median zone, a smaller diameter than that 'it has at its axial ends.
- This smaller diameter eliminates any risk of covering the coronary ostia.
- the support comprises:
- one end of said elongated frame elements is connected to one of these tubular portions while the other end of these elongated frame elements is connected to the other tubular portion.
- the support comprises a single tubular portion extending over the entire support, to the wall of which said elongated reinforcing elements are connected.
- the support comprises a single tubular portion, from which protrude, on an axial end of this tubular portion, said elongated reinforcing elements.
- This support can in particular allow the implantation of a mitral valve.
- Figure 1 is a side view with partial section, in the deployed state and before implantation, in the case of implantation of an aortic valve
- Figure 2 is a side view during positioning in an aorta and before deployment, while it is placed on an instrument for positioning and deployment
- Figure 3 is a partial view, on an enlarged scale, before anchoring to the aortic wall
- Figure 4 is a view similar to Figure 2, during deployment
- Figure 5 is a view similar to Figure 3 after anchoring to the aortic wall
- Figure 6 is a view similar to Figure 1 after implantation, said positioning and deployment instrument having been removed
- Figures 7 and 8 are views of said assembly similar to Figure 6 according to two alternative embodiments, said positioning and deployment instrument being shown schematically in Figure 8
- Figures 9A, 10A, 1 1 A, 1 2A, 1 3A and 14A are sectional views of a pallet that
- FIG. 1 in progress the implementation of this set;
- Figure 20 is a view of this instrument in section along the line XX-XX of Figure 1 9;
- FIGS. 21 and 22 are views in longitudinal section of three other embodiments of this same instrument, while it is placed in an aorta, FIG. 21 also showing said assembly during implantation, and
- FIG. 23 is a view of said assembly, in the case of the implantation of a mitral valve.
- Figure 1 shows an assembly 1 for the establishment of a prosthetic aortic valve in an aorta.
- This assembly 1 comprises a support 2 on which is mounted this prosthetic aortic valve 3.
- the support 2 comprises two tubular end portions 4 and a series of elongated reinforcing elements 5.
- the tubular portions 4 are made of a flexible material slightly stretchable in the circumferential direction of these tubular portions 4. They can in particular be made of polymer or in a fabric of fibers known by the name "dacron", or in biological tissue such as the pericardium.
- the diameter of these tubular portions 4 corresponds substantially to the diameter of the locations of the aorta opposite which these tubular portions 4 are intended to be implanted, that is to say, as shown in FIGS. 2 to 6, respectively l the native valve ring 101 and the wall 102 of the aorta extending beyond the coronary ostia 103.
- Each elongated frame member 5 is made of a relatively rigid material, in particular a metallic material. It has a curved elongated central portion 5a and two end pallets 5b, by which it is connected to the respective tubular portions 4. As shown in FIG. 1, these elements 5 are regularly distributed over the periphery of the tubular portions 4 and are arranged with their convex side facing radially towards the interior of the support 2. The latter thus has, at its median zone, a diameter smaller than that which it presents at its axial ends.
- Each pallet 5b is integrated into the corresponding tubular portion 4 and is fixed to the latter in particular by sutures. She comprises one or more through holes arranged radially, in particular two holes in the example shown, in which the lateral branches for anchoring a clip 6 are engaged.
- these lateral branches are located, before implantation, set back from the radially external orifices of these holes, so that the clip 6 does not protrude beyond the radially external face of the portion tubular 4 but protrudes radially inward from this tubular portion 4.
- These holes are adjusted to said lateral branches so that the clip 6 is retained in these holes by friction.
- These branches can however slide in these holes towards an anchoring position shown in FIGS. 5 and 6, when an inflatable balloon comes to bear against the middle branch of the clip 6.
- the valve 3 is not in itself part of the invention and is therefore not particularly detailed. It can be made of biological tissue or synthetic material, in particular a polymer, and has a base ring connected to the proximal tubular portion 4 in particular by suturing and valves whose commissures 3a are connected to the adjacent portions 5a of the elements 5.
- the connection of the base ring to the proximal portion 4 seals the valve 3 between this ring and this tubular portion, and the connection of the commissures 3a to the elements 5 allows the deployment of the valves when the deployment of the support 2 is realized.
- the instrument 10 for positioning and deploying the assembly 1 comprises, as shown in FIG. 2, a catheter 1 1 for the flow of blood during the implantation of the assembly 1, three balloons 1 2 , 1 3, 14 and a sheath 9 for holding the portions 4 and the elements 5 in a contraction position.
- the catheter 1 1 includes a distal opening 1 1 a flow of blood beyond the assembly 1 the time of implantation. It can possibly include a pump facilitating this flow.
- the proximal balloon 1 2 is frustoconical and is dimensioned to bear against the flared wall 104 of the ventricle when it is inflated. It therefore allows, following its coming into abutment against this wall 1 04, to precisely position the instrument 10 and the assembly 1 relative to the implantation site, notwithstanding the beating of the heart, and blocks the passage of blood so as to channel it inside the catheter 1 1.
- the balloon 13 extends opposite the base ring of the valve 3. It allows the deployment of the proximal portion 4 and of this base ring.
- the distal balloon 14 extends in turn opposite the portion
- the sheath 9 is sliding on the catheter 1 1 and allows, by its withdrawal, to release the assembly 1.
- the balloon 13 is inflated while the sheath 9 still covers the distal portion 4.
- the inflation of the balloon 1 3 is carried out until the portion 4 is pressed against the ring 101 and then press against the middle branches of the staples 6 in order to slide the staples 6 into the holes in the pallets 5b and thus insert the lateral branches of these staples 6 in this ring 101.
- the sheath 9 is moved back so as to release the distal portion 4, which is deployed and anchored by means of the balloon 14, in the same manner as above.
- the flexible structure of the portions 4 allows the latter to adapt to the specific anatomy of the implantation site, particularly when the native valve is preserved and / or when this valve or the ring 101 has calcified zones.
- the elements 5 make it possible to ensure adequate deployment of the valves whatever the shape of the tubular portions 4 after implantation, and the lateral spaces which these elements 5 delimit between themselves allow a large flow of blood to the coronary ostia 103.
- the staples 6 make it possible, by their number, to ensure perfect immobilization of the assembly 1 in the implantation site.
- FIG. 7 shows an assembly 1 in which the valve 3 has a peripheral wall 3b. This wall 3b is connected to the elements
- Figure 8 shows an assembly 1 in which the proximal area
- proximal tubular portion 4 has, or adopts by elastic deformation, a frustoconical shape adapted to bear against the wall
- the balloon 12 allows the deployment of this zone 4a.
- FIGS. 9A to 1 7 show different possible variants in the shapes of the pallets 5b and the staples 6.
- Figures 9A to 13C show clips 6 allowing anchoring by plastic deformation.
- the holes of a pallet 5b may not be oriented radially but obliquely (cf. FIG. 9A) so as to produce an oblique deployment of the anchoring branches of the clip 6 (cf. FIG. 9B), strengthening the strength of the anchor obtained;
- the middle branch of the clip 6 may have a non-rectilinear shape, either in a chevron (cf. FIG. 10A) or wavy (cf. FIG. 1 1 A), for, when the balloons 1 3, 14 are applied against it, orient the anchoring branches in oblique directions (cf. FIGS. 10B, 1 1 B); the lateral branches can be straight (see Figures 9A to 10B) or curved (see Figures 1 1 A, 1 1 B).
- At least one clip 6 can also be made of a shape memory material, in particular the alloy of nickel and titanium known under the name "NITINOL".
- the anchoring branches of this clip 6 can then be rectilinear before anchoring (cf. FIG. 1 2A) and can take a curved shape by shape memory (cf. FIG. 1 2B).
- the clip 6 can also be axially movable relative to the pallet 5b, while being guided relative to the latter, in order to deploy the said anchoring branches.
- This guidance can in particular be achieved by engagement of one or more pads 6a which it comprises in a "T" groove arranged in the pallet 5b (cf. FIGS. 13A to 13C); these anchoring branches can be pivoted and be moved by taking support against corresponding walls 1 5 of the pallet 5b (cf. FIGS. 1 3A, 1 3B), or be deformable (cf. FIGS. 14A, 14B).
- FIG. 1 5 and 16 show that the clips 6 may have two perpendicular middle branches and then include four anchoring branches promoting a perpendicular depression in the wall. These middle branches may include a plate 16 favoring the support of the balloons 1 3, 14 against them.
- Figure 17 shows that the staples 6 can have a harpoon shape. They can also be in the form of push pins.
- FIGS. 18 to 20 show that the balloon 14 can be replaced by deployable radial arms 21.
- the instrument 10 then has a catheter 1 1, a balloon 23 for deploying the elements 5 and an inner sheath 24 connected by its proximal end to the catheter 1 1 but capable of sliding relative to the latter outside this end.
- This sheath 24 has longitudinal slots which individualize the arms 21, and its sliding causes the deployment of these arms 21 by elastic deformation of this sheath 24.
- FIG. 21 shows that the balloon 12 can be replaced by a structure 25 with deployable radial arms 26 similar to those described with reference to FIGS. 1 8 to 20.
- FIG. 22 shows that the balloon 12 can be replaced by a structure 35 which can be deployed in the manner of an umbrella, this structure 35 comprising a series of "ribs" 36 for bearing against the wall 104.
- FIG. 23 shows an assembly 1, the support 2 of which comprises a single tubular portion 4, from which protrude, on an axial end of this tubular portion 4, elongated reinforcing elements 5.
- the latter are rectilinear and of limited length; they allow, in the same manner as above, the deployment of the valve 3.
- the invention provides an assembly allowing the installation of a prosthetic valve in a body conduit, in particular a heart valve and in particular an aortic valve, which has decisive advantages compared to homologous sets of the prior art.
- the elements 5 may have a rectilinear shape at rest and be constrained at their central part by an element clamping their expansion radially so as to give them a curvature towards the inside of the body duct; the balloon 13 can be replaced by deployable radial arms; other means of proximal positioning than the balloon 12, the arms 25 or the ribs 36 can be envisaged; the catheter 1 1 may include a check valve.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002334045A AU2002334045B2 (en) | 2001-07-31 | 2002-07-30 | Assembly for setting a valve prosthesis in a corporeal duct |
US10/484,865 US7682390B2 (en) | 2001-07-31 | 2002-07-30 | Assembly for setting a valve prosthesis in a corporeal duct |
DE60233503T DE60233503D1 (de) | 2001-07-31 | 2002-07-30 | Anordnung zum einsetzen einer ventilprothese in ein körpergefäss |
CA2456002A CA2456002C (fr) | 2001-07-31 | 2002-07-30 | Ensemble permettant la mise en place d'une valve prothetique dans un conduit corporel |
EP02791513A EP1411865B1 (fr) | 2001-07-31 | 2002-07-30 | Ensemble permettant la mise en place d'une valve prothetique dans un conduit corporel |
JP2003516429A JP4212474B2 (ja) | 2001-07-31 | 2002-07-30 | 体内管路の中に人工弁を設置するためのアセンブリ |
AT02791513T ATE440568T1 (de) | 2001-07-31 | 2002-07-30 | Anordnung zum einsetzen einer ventilprothese in ein kírpergefäss |
DK02791513T DK1411865T3 (da) | 2001-07-31 | 2002-07-30 | Indretning til indsætning af en ventilprotese i en legemskanal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0110281A FR2828091B1 (fr) | 2001-07-31 | 2001-07-31 | Ensemble permettant la mise en place d'une valve prothetique dans un conduit corporel |
FR01/10281 | 2001-07-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003011195A2 true WO2003011195A2 (fr) | 2003-02-13 |
WO2003011195A3 WO2003011195A3 (fr) | 2004-02-12 |
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PCT/FR2002/002745 WO2003011195A2 (fr) | 2001-07-31 | 2002-07-30 | Ensemble permettant la mise en place d'une valve prothetique dans un conduit corporel |
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US (1) | US7682390B2 (fr) |
EP (1) | EP1411865B1 (fr) |
JP (1) | JP4212474B2 (fr) |
AT (1) | ATE440568T1 (fr) |
AU (1) | AU2002334045B2 (fr) |
CA (1) | CA2456002C (fr) |
DE (1) | DE60233503D1 (fr) |
DK (1) | DK1411865T3 (fr) |
ES (1) | ES2335652T3 (fr) |
FR (1) | FR2828091B1 (fr) |
WO (1) | WO2003011195A2 (fr) |
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Publication number | Publication date |
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CA2456002C (fr) | 2010-07-20 |
DK1411865T3 (da) | 2010-01-04 |
JP2004535897A (ja) | 2004-12-02 |
AU2002334045B2 (en) | 2007-11-08 |
ES2335652T3 (es) | 2010-03-31 |
CA2456002A1 (fr) | 2003-02-13 |
FR2828091B1 (fr) | 2003-11-21 |
EP1411865A2 (fr) | 2004-04-28 |
WO2003011195A3 (fr) | 2004-02-12 |
US7682390B2 (en) | 2010-03-23 |
FR2828091A1 (fr) | 2003-02-07 |
US20050033398A1 (en) | 2005-02-10 |
ATE440568T1 (de) | 2009-09-15 |
DE60233503D1 (de) | 2009-10-08 |
JP4212474B2 (ja) | 2009-01-21 |
EP1411865B1 (fr) | 2009-08-26 |
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