CA2027441C - Device implanted in a vessel, with lateral legs provided with antagonistically oriented teeth - Google Patents
Device implanted in a vessel, with lateral legs provided with antagonistically oriented teethInfo
- Publication number
- CA2027441C CA2027441C CA002027441A CA2027441A CA2027441C CA 2027441 C CA2027441 C CA 2027441C CA 002027441 A CA002027441 A CA 002027441A CA 2027441 A CA2027441 A CA 2027441A CA 2027441 C CA2027441 C CA 2027441C
- Authority
- CA
- Canada
- Prior art keywords
- leg
- tooth
- teeth
- vessel
- legs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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
- A61F2/01—Filters implantable into blood vessels
- A61F2/0105—Open ended, i.e. legs gathered only at one side
-
- 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
- A61F2/01—Filters implantable into blood vessels
- A61F2002/016—Filters implantable into blood vessels made from wire-like elements
-
- 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
- A61F2/01—Filters implantable into blood vessels
- A61F2002/018—Filters implantable into blood vessels made from tubes or sheets of material, e.g. by etching or laser-cutting
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/848—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents having means for fixation to the vessel wall, e.g. barbs
- A61F2002/8483—Barbs
-
- 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
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/005—Rosette-shaped, e.g. star-shaped
-
- 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
- A61F2230/0067—Three-dimensional shapes conical
-
- 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
- A61F2230/008—Quadric-shaped paraboloidal
Abstract
This invention relate, to a device adapted to be implanted in a vessel, for example a filter for retaining blood clots in a vein, which comprises lateral legs abutting on the wall of the vessel.
According to the invention, each leg, whose end is not sharp, is provided with at least two teeth with antagonistic inclination. They are preferably placed towards the rounded end of the leg and have divergent directions. The tooth is for example obtained by cutting out and pushing a median part of the leg, and possibly by subsequent bending thereof. The angle made by the end part of the tooth with respect to the plane of the leg is included between 0 and 30°;
the tip of the tooth is at a distance of between 0.8 and 2 mm from the leg.
According to the invention, each leg, whose end is not sharp, is provided with at least two teeth with antagonistic inclination. They are preferably placed towards the rounded end of the leg and have divergent directions. The tooth is for example obtained by cutting out and pushing a median part of the leg, and possibly by subsequent bending thereof. The angle made by the end part of the tooth with respect to the plane of the leg is included between 0 and 30°;
the tip of the tooth is at a distance of between 0.8 and 2 mm from the leg.
Description
20274~1 FIELD OF THE INVENTION
The present invention relates to devices adapted to be implanted definitively in a vessel and which comprise lateral legs abutting on the inner wall of said vessel; it concerns in particular filters introduced by the endovenous route to prevent the migration of blood clots. More precisely, the present invention concerns the hooking means with which the legs are provided and which ensure anchoring of the device in the wall of the vessel.
BACKGROUND OF THE INVENTION
In the known devices, the hooking means present various shapes, which are a function of the configuration of the legs. In US.A.3 952 747, they are constituted by the sharp end of each leg which is bent to form a hook. In US.A.3 334 629, it is question of a plurality of small teeth projecting from the outer surface of the free end of each leg.
The purpose of these hooking means is to maintain the device at the place where it was implanted in the vessel, avoiding any displacement and any migration of the device, and also avoiding perforation of or injury to the wall of the vessel.
According to Applicant, this purpose is only imperfectly attained in the prior art devices. He has observed that, being designed to oppose any dis-placement of the device in the direction of blood flow within the vessel, the hooking means mentioned above are not really in a position to ensure definitive and absolute anchoring. In fact, the wall of the vessel is not a rigid element; it is subjected to fluctuating movements during passage of the flow, in particular of the blood flow in a vein. These fluctuating movements act on the legs of the device -2- ~027441 and may cause unhooking of all or parl: of these legs of which the hooks or teeth all have the same orienta-tion, with, correlatively, a displacerent of the whole device or a relative displacement of one or more legs with respect to the others and therefore a poor positioning of the device with respect to the vessel. These fluctuating movements may, in combina-tion with the driving force of the flux, also cause perforation of the wall when the hooking means are too sharp.
SUMMARY OF THE INVENTION
The purpose set forth hereinabove is perfectly attained by the device of the invention, adapted to be implanted definitively in a vessel, for example a filter for retaining blood clots, and which comprises lateral legs provided with hooking means. According to the invention, the end of the leg is not sharp and the hooking means consist of at least two teeth oriented antagonistically, in the general direction of the leg.
The term "tooth" must here be taken in a general sense, as being a rod projecting from the surface of the leg, of which one end is fast with the leg and the other end is pointed.
Each leg comprises two teeth which are inclined with respect to the surface of the leg, one in the direction of flow of the blood and the other in the opposite direction. Thanks to this particu-lar arrangement, the fluctuating movements of the wall cause the two teeth to hook in the wall. Once such hooking is effected, it opposes any movementof the leg in one direction and in the other; the anchoring obtained is really definitive and absolute.
As the end of the legs is not sharp, there is no risk of direct penetration of the legs in the wall.
1~ -3- 2027441 When that part of the leg which abuts on the wall of the vessel is of reduced length, from one to some centimetres, it is necessary that the two teeth be near each other; however, in that case, in order to obtain the desired effect, it is desirable that their directions be divergent. In the contrary case, the space between the pointed ends would be too small for the wall of the vessel to be able to be introduced therein during opening of the device and application of the legs on the wall.
In order to avoid the risks of perforations of the wall, whilst ensuring efficient anchoring, it is preferable if the structure of the tooth with respect to the leg be such that at least the free end of the tooth has an inclination with respect to the leg of, at the most, 30, the tip of the tooth being at a distance of between 0.8 and 2 mm from the leg. In this way, the tooth can penetrate in the wall only by a reduced thickness.
This may be obtained with a rectilinear tooth;
however, in order to limit the length of the tooth, it iS advantageous if the tooth is curved or bent, its end fast with the leg havin~ an inclination greater than 30.
In the preferred embodiment, each leg of the device being a flat metal rod, the teeth are obtained by cut-out and pushing in the median part close to the free end of the rod.
Each leg is preferably provided with two teeth having the form o' two triangles of which the parallel bases, fast with the leg, are spaced apart by a dis-tance of between 2 and 10 mm.
- 3a -An aspect of this invention is as follows:
A filter device adapted to be implanted into a vessel or lumen of the body, comprising a head and a plurality of legs extending from the head, free ends of said legs being rounded, and hooking means provided on each of the legs, said hooking means including at least two teeth oriented antagonistically in a longitudinal direction of the leg.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be more readily understood on reading the following description of an embodiment ~-.
of a medical filter for retaining blood clots, of which each lateral leg is provided with two antagonis-tically oriented teeth, with reference to the accompa-nying drawings, in which:
Figure 1 is a side view of a filter.
Figure 2 is a plan view of the end of a leg.
Figure 3 is a view in longitudinal section of the end of a leg hooked on a vein wall.
DETAILED DESCRIPTION OF THE DRAWINGS
Referring now to the drawings the filter 1 shown in Figure 1 is placed inside a vein 2 in which the blood flows in the dire~tion of arrow F. Filter 1 is generally conical in shape, with lateral legs 3 which are joined to form the ogival head 4 of the filter. The free ends 5 of each lateral leg 3 present a rounded end 9 and comprise two teeth 6, 7.
The filter is made, in conventional manner, of a material which presents a certa~n elasticity, with the result that the legs 3 may be brought substan-tially against one another in a sheath for introduc-tion, of the catheter type, and that they open out inside the vein 2 when the filter is pushed out of the sheath. The elastic deformation of the legs 3 with respect to the ogival head 4 is such that, the filter 1 being implanted, the free end 5 of each lateral leg 3 abuts on the inner wall 8 of the vein 2.
According to the preferred embodiment, the filter 1 is a metal piece with six flat rods acting as legs 3. Each leg 3 has a width of the order of 2 mm.
Figure 2 shows the free end 5 of a leg 3, with its rounded end 9. To produce teeth 6, 7, two cut-outs are made along solid lines 10, 11. Cut-out 11 corres-ponding to tooth 7, located in the immediate vicinity of the end 9, is formed by two rectilinear cuts 12, 2Q2744~
13 intersecting at a point 14 lying on the axis of symmetry D of leg 3. Point 14 is located towards the rounded end 9. An examination of Figure 2 will show that tooth 7 is obtained by pushing the triangular part defined by cuts 12, 13, outwardly of leg 3.
The broken line 15 constitutes the axis of fold and therefore the base of tooth 7, rendering the latter fast with leg 3.
Cuts 16, 17 corresponding to the second cut-out 10 are effected in the saile manner as hereinabove, except that the point of con-v-ergence 18 of the two cuts 16, 17 faces the ogival head 4.
In a precise example, the free end 5 of the leg 3 having a width L of 2 mm, the bases 15 and 19 of the two teeth have a length 1 of 1 mm; they are parallel to and spaced apart from each other by a distance e of 2.5 mm. The 'neight h of the triangle corresponding to the theoretical height of the tooth is 1.8 mm.
Each tooth 6, 7 is bent, as shown in Figure 3, along an axis of bend 20 which separates, on the one hand, the triangular end part 21 of the tooth and, on the other hand, that part 22 joining the leg 3, forming an isosceles trapezium of which the large base is the first line 19 along which the part inside the two cuts 16, 17 was pushed.
The angle -~ formed between the triangular end part 21 of the tooth and the direction D' of the plane of the leg 3 is preferably included between o and 30; in the example mentioned above, it is 15.
The angle ~ formed between the trapezoidal part 22 of the tooth and the direction D' of the plane of the leg 3 is preferably included between 45 and 90; in the example mentioned above, it is 60.
The tip 25 of tooth 6 is distant by a height _ from the leg 3, which is preferably included between o.~ and 2 mm. In the example mentioned above, it is 1 mm.
When the filter is placed in the vein 2, the legs 3 open out and their ends 5 are applied on the inner face 23 of the wall 8. Under the driving force of the blood flow, the filter 1 tends to move in the direction of arrow F, which causes the tooth 6 facing the ogival head 4 to penetrate in the vein wall 8. l~loreover, the fluctuating movements of the wall 8 promote progressive penetration of the tooth 7 facing the rounded end 9. The surface 24 of the free end 5 of the leg 3 forms a large bearing surface which prevents any penetration of the 'eg 3 itself in the wall 8.
In this way, after the teeth 6, 7 of all the legs 3 have penetrated in the wall 8 of the vein 2, the filter 1 is definitively hooked without any possibility of subsequent migration and without risk of injuring the vein 2.
The invention is not limited to the embodiment which has been described by non-limiting example, although this is the preferred embodiment, but it covers all the variants thereof. In particul.lr the total number of teeth on each leg is not necesarily two; what is important is that there are at least two antagonistically oriented teeth. Furthermore, the man skilled in the art can determine, as a function of the type of device, filtering, blocking or spacing apart, as a function of its dimensions and the consti-tuent materials, the configuration and arrangement of the antagonistically oriented teeth. It will be understood that a result similar to the bend along ~ 7 ~ 2 0 2 7 4~ 1 line 20 may be obtained by curving the tooth along an arc of circle, so that the outermost part of the tooth makes with the direction of the plane of the leg an angle C~<. Similarly, the term leg is not exclusive of the legs serving for filtration or spacing apart; it is known that it may also be question of appendices which constitute, to some extent, the free ends which abut on the wall of the vessel, in the sense given in the present specification.
The present invention relates to devices adapted to be implanted definitively in a vessel and which comprise lateral legs abutting on the inner wall of said vessel; it concerns in particular filters introduced by the endovenous route to prevent the migration of blood clots. More precisely, the present invention concerns the hooking means with which the legs are provided and which ensure anchoring of the device in the wall of the vessel.
BACKGROUND OF THE INVENTION
In the known devices, the hooking means present various shapes, which are a function of the configuration of the legs. In US.A.3 952 747, they are constituted by the sharp end of each leg which is bent to form a hook. In US.A.3 334 629, it is question of a plurality of small teeth projecting from the outer surface of the free end of each leg.
The purpose of these hooking means is to maintain the device at the place where it was implanted in the vessel, avoiding any displacement and any migration of the device, and also avoiding perforation of or injury to the wall of the vessel.
According to Applicant, this purpose is only imperfectly attained in the prior art devices. He has observed that, being designed to oppose any dis-placement of the device in the direction of blood flow within the vessel, the hooking means mentioned above are not really in a position to ensure definitive and absolute anchoring. In fact, the wall of the vessel is not a rigid element; it is subjected to fluctuating movements during passage of the flow, in particular of the blood flow in a vein. These fluctuating movements act on the legs of the device -2- ~027441 and may cause unhooking of all or parl: of these legs of which the hooks or teeth all have the same orienta-tion, with, correlatively, a displacerent of the whole device or a relative displacement of one or more legs with respect to the others and therefore a poor positioning of the device with respect to the vessel. These fluctuating movements may, in combina-tion with the driving force of the flux, also cause perforation of the wall when the hooking means are too sharp.
SUMMARY OF THE INVENTION
The purpose set forth hereinabove is perfectly attained by the device of the invention, adapted to be implanted definitively in a vessel, for example a filter for retaining blood clots, and which comprises lateral legs provided with hooking means. According to the invention, the end of the leg is not sharp and the hooking means consist of at least two teeth oriented antagonistically, in the general direction of the leg.
The term "tooth" must here be taken in a general sense, as being a rod projecting from the surface of the leg, of which one end is fast with the leg and the other end is pointed.
Each leg comprises two teeth which are inclined with respect to the surface of the leg, one in the direction of flow of the blood and the other in the opposite direction. Thanks to this particu-lar arrangement, the fluctuating movements of the wall cause the two teeth to hook in the wall. Once such hooking is effected, it opposes any movementof the leg in one direction and in the other; the anchoring obtained is really definitive and absolute.
As the end of the legs is not sharp, there is no risk of direct penetration of the legs in the wall.
1~ -3- 2027441 When that part of the leg which abuts on the wall of the vessel is of reduced length, from one to some centimetres, it is necessary that the two teeth be near each other; however, in that case, in order to obtain the desired effect, it is desirable that their directions be divergent. In the contrary case, the space between the pointed ends would be too small for the wall of the vessel to be able to be introduced therein during opening of the device and application of the legs on the wall.
In order to avoid the risks of perforations of the wall, whilst ensuring efficient anchoring, it is preferable if the structure of the tooth with respect to the leg be such that at least the free end of the tooth has an inclination with respect to the leg of, at the most, 30, the tip of the tooth being at a distance of between 0.8 and 2 mm from the leg. In this way, the tooth can penetrate in the wall only by a reduced thickness.
This may be obtained with a rectilinear tooth;
however, in order to limit the length of the tooth, it iS advantageous if the tooth is curved or bent, its end fast with the leg havin~ an inclination greater than 30.
In the preferred embodiment, each leg of the device being a flat metal rod, the teeth are obtained by cut-out and pushing in the median part close to the free end of the rod.
Each leg is preferably provided with two teeth having the form o' two triangles of which the parallel bases, fast with the leg, are spaced apart by a dis-tance of between 2 and 10 mm.
- 3a -An aspect of this invention is as follows:
A filter device adapted to be implanted into a vessel or lumen of the body, comprising a head and a plurality of legs extending from the head, free ends of said legs being rounded, and hooking means provided on each of the legs, said hooking means including at least two teeth oriented antagonistically in a longitudinal direction of the leg.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be more readily understood on reading the following description of an embodiment ~-.
of a medical filter for retaining blood clots, of which each lateral leg is provided with two antagonis-tically oriented teeth, with reference to the accompa-nying drawings, in which:
Figure 1 is a side view of a filter.
Figure 2 is a plan view of the end of a leg.
Figure 3 is a view in longitudinal section of the end of a leg hooked on a vein wall.
DETAILED DESCRIPTION OF THE DRAWINGS
Referring now to the drawings the filter 1 shown in Figure 1 is placed inside a vein 2 in which the blood flows in the dire~tion of arrow F. Filter 1 is generally conical in shape, with lateral legs 3 which are joined to form the ogival head 4 of the filter. The free ends 5 of each lateral leg 3 present a rounded end 9 and comprise two teeth 6, 7.
The filter is made, in conventional manner, of a material which presents a certa~n elasticity, with the result that the legs 3 may be brought substan-tially against one another in a sheath for introduc-tion, of the catheter type, and that they open out inside the vein 2 when the filter is pushed out of the sheath. The elastic deformation of the legs 3 with respect to the ogival head 4 is such that, the filter 1 being implanted, the free end 5 of each lateral leg 3 abuts on the inner wall 8 of the vein 2.
According to the preferred embodiment, the filter 1 is a metal piece with six flat rods acting as legs 3. Each leg 3 has a width of the order of 2 mm.
Figure 2 shows the free end 5 of a leg 3, with its rounded end 9. To produce teeth 6, 7, two cut-outs are made along solid lines 10, 11. Cut-out 11 corres-ponding to tooth 7, located in the immediate vicinity of the end 9, is formed by two rectilinear cuts 12, 2Q2744~
13 intersecting at a point 14 lying on the axis of symmetry D of leg 3. Point 14 is located towards the rounded end 9. An examination of Figure 2 will show that tooth 7 is obtained by pushing the triangular part defined by cuts 12, 13, outwardly of leg 3.
The broken line 15 constitutes the axis of fold and therefore the base of tooth 7, rendering the latter fast with leg 3.
Cuts 16, 17 corresponding to the second cut-out 10 are effected in the saile manner as hereinabove, except that the point of con-v-ergence 18 of the two cuts 16, 17 faces the ogival head 4.
In a precise example, the free end 5 of the leg 3 having a width L of 2 mm, the bases 15 and 19 of the two teeth have a length 1 of 1 mm; they are parallel to and spaced apart from each other by a distance e of 2.5 mm. The 'neight h of the triangle corresponding to the theoretical height of the tooth is 1.8 mm.
Each tooth 6, 7 is bent, as shown in Figure 3, along an axis of bend 20 which separates, on the one hand, the triangular end part 21 of the tooth and, on the other hand, that part 22 joining the leg 3, forming an isosceles trapezium of which the large base is the first line 19 along which the part inside the two cuts 16, 17 was pushed.
The angle -~ formed between the triangular end part 21 of the tooth and the direction D' of the plane of the leg 3 is preferably included between o and 30; in the example mentioned above, it is 15.
The angle ~ formed between the trapezoidal part 22 of the tooth and the direction D' of the plane of the leg 3 is preferably included between 45 and 90; in the example mentioned above, it is 60.
The tip 25 of tooth 6 is distant by a height _ from the leg 3, which is preferably included between o.~ and 2 mm. In the example mentioned above, it is 1 mm.
When the filter is placed in the vein 2, the legs 3 open out and their ends 5 are applied on the inner face 23 of the wall 8. Under the driving force of the blood flow, the filter 1 tends to move in the direction of arrow F, which causes the tooth 6 facing the ogival head 4 to penetrate in the vein wall 8. l~loreover, the fluctuating movements of the wall 8 promote progressive penetration of the tooth 7 facing the rounded end 9. The surface 24 of the free end 5 of the leg 3 forms a large bearing surface which prevents any penetration of the 'eg 3 itself in the wall 8.
In this way, after the teeth 6, 7 of all the legs 3 have penetrated in the wall 8 of the vein 2, the filter 1 is definitively hooked without any possibility of subsequent migration and without risk of injuring the vein 2.
The invention is not limited to the embodiment which has been described by non-limiting example, although this is the preferred embodiment, but it covers all the variants thereof. In particul.lr the total number of teeth on each leg is not necesarily two; what is important is that there are at least two antagonistically oriented teeth. Furthermore, the man skilled in the art can determine, as a function of the type of device, filtering, blocking or spacing apart, as a function of its dimensions and the consti-tuent materials, the configuration and arrangement of the antagonistically oriented teeth. It will be understood that a result similar to the bend along ~ 7 ~ 2 0 2 7 4~ 1 line 20 may be obtained by curving the tooth along an arc of circle, so that the outermost part of the tooth makes with the direction of the plane of the leg an angle C~<. Similarly, the term leg is not exclusive of the legs serving for filtration or spacing apart; it is known that it may also be question of appendices which constitute, to some extent, the free ends which abut on the wall of the vessel, in the sense given in the present specification.
Claims (7)
1. A filter device adapted to be implanted into a vessel or lumen of the body, comprising a head and a plurality of legs extending from the head, free ends of said legs being rounded, and hooking means provided on each of the legs, said hooking means including at least two teeth oriented antagonistically in a longitudinal direction of the leg.
2. The device of Claim 1 wherein the two teeth of the hooking means are in the vicinity of each other and have divergent directions.
3. The device of Claim 1 or Claim 2, wherein a free end of each said tooth of the hooking means presents a inclination with respect to the leg of at the most 30°
and a tip of the free end of the tooth is at a distance of between 0.8 and 2 mm from the leg.
and a tip of the free end of the tooth is at a distance of between 0.8 and 2 mm from the leg.
4. The device of Claim 3, wherein the tooth is of a curved or bent portion fast with the leg presenting an inclination greater than 30°.
5. The device of Claim 4, wherein the inclination of the bend portion of the tooth fast with the leg is between 45° and 20.
6. The device of Claim 1, wherein each leg being a flat metal rod, the teeth of the hooking means are obtained by cutting out from the leg and pushing in the median part.
7. The device of Claim 1, wherein each leg is provided with two teeth shaped as two triangles whose parallel bases, fast with the leg, are spaced apart by a distance of between 2 and 10 mm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9004552A FR2660189B1 (en) | 1990-03-28 | 1990-03-28 | DEVICE INTENDED TO BE IMPLANTED IN A VESSEL WITH SIDE LEGS WITH ANTAGONIST TEETH. |
FR9004552 | 1990-03-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2027441A1 CA2027441A1 (en) | 1991-09-29 |
CA2027441C true CA2027441C (en) | 1996-07-02 |
Family
ID=9395589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002027441A Expired - Lifetime CA2027441C (en) | 1990-03-28 | 1990-10-12 | Device implanted in a vessel, with lateral legs provided with antagonistically oriented teeth |
Country Status (8)
Country | Link |
---|---|
US (1) | US5108418A (en) |
EP (1) | EP0448891B1 (en) |
JP (1) | JPH04129549A (en) |
AT (1) | ATE119013T1 (en) |
CA (1) | CA2027441C (en) |
DE (1) | DE69017427T2 (en) |
ES (1) | ES2071795T3 (en) |
FR (1) | FR2660189B1 (en) |
Families Citing this family (156)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5626605A (en) * | 1991-12-30 | 1997-05-06 | Scimed Life Systems, Inc. | Thrombosis filter |
FR2689388B1 (en) * | 1992-04-07 | 1999-07-16 | Celsa Lg | PERFECTIONALLY RESORBABLE BLOOD FILTER. |
FR2696092B1 (en) * | 1992-09-28 | 1994-12-30 | Lefebvre Jean Marie | Kit for medical use composed of a filter and its device for placement in the vessel. |
WO1995009567A1 (en) * | 1993-10-01 | 1995-04-13 | Boston Scientific Corporation | Improved vena cava filter |
DE4339265A1 (en) * | 1993-11-18 | 1995-05-24 | Angiomed Ag | Vena cava filter |
FR2714814B1 (en) * | 1994-01-10 | 1996-03-29 | Bentex Trading Sa | Device intended to be placed in a vessel with flattened fixing lugs. |
US5634942A (en) * | 1994-04-21 | 1997-06-03 | B. Braun Celsa | Assembly comprising a blood filter for temporary or definitive use and a device for implanting it |
US5853420A (en) * | 1994-04-21 | 1998-12-29 | B. Braun Celsa | Assembly comprising a blood filter for temporary or definitive use and device for implanting it, corresponding filter and method of implanting such a filter |
US6123715A (en) | 1994-07-08 | 2000-09-26 | Amplatz; Curtis | Method of forming medical devices; intravascular occlusion devices |
DE69529338T3 (en) | 1994-07-08 | 2007-05-31 | Ev3 Inc., Plymouth | Intravascular filter device |
US5601595A (en) * | 1994-10-25 | 1997-02-11 | Scimed Life Systems, Inc. | Remobable thrombus filter |
US5709704A (en) * | 1994-11-30 | 1998-01-20 | Boston Scientific Corporation | Blood clot filtering |
US6214025B1 (en) | 1994-11-30 | 2001-04-10 | Boston Scientific Corporation | Self-centering, self-expanding and retrievable vena cava filter |
US6013093A (en) * | 1995-11-28 | 2000-01-11 | Boston Scientific Corporation | Blood clot filtering |
CA2171896C (en) * | 1995-03-17 | 2007-05-15 | Scott C. Anderson | Multi-anchor stent |
DE19509464C1 (en) * | 1995-03-20 | 1996-06-27 | Horst J Dr Med Jaeger | Implant for artery or vein, with anchor piece fixed to wall of vessel |
ES2206549T3 (en) * | 1995-04-14 | 2004-05-16 | B. Braun Medical Sas | INSTRUMENTAL MEDICAL DEVICE SUCH AS SANGUINEO FILTER. |
US6168622B1 (en) | 1996-01-24 | 2001-01-02 | Microvena Corporation | Method and apparatus for occluding aneurysms |
AR001162A1 (en) * | 1996-03-06 | 1997-09-24 | Parodi Juan C | Non-migratory positioning endovascular expander |
US6447530B1 (en) | 1996-11-27 | 2002-09-10 | Scimed Life Systems, Inc. | Atraumatic anchoring and disengagement mechanism for permanent implant device |
US5868141A (en) * | 1997-05-14 | 1999-02-09 | Ellias; Yakub A. | Endoscopic stomach insert for treating obesity and method for use |
US6361545B1 (en) | 1997-09-26 | 2002-03-26 | Cardeon Corporation | Perfusion filter catheter |
US6443972B1 (en) | 1997-11-19 | 2002-09-03 | Cordis Europa N.V. | Vascular filter |
US6254563B1 (en) | 1997-12-15 | 2001-07-03 | Cardeon Corporation | Perfusion shunt apparatus and method |
DE69818302D1 (en) * | 1997-12-15 | 2003-10-23 | Cardeon Corp | Perfusionsverbindungsvorrichtung |
CA2294484C (en) * | 1998-04-23 | 2004-03-30 | Scimed Life Systems, Inc. | Atraumatic medical retrieval device |
US5984947A (en) * | 1998-05-04 | 1999-11-16 | Scimed Life Systems, Inc. | Removable thrombus filter |
US6508777B1 (en) | 1998-05-08 | 2003-01-21 | Cardeon Corporation | Circulatory support system and method of use for isolated segmental perfusion |
US6241746B1 (en) | 1998-06-29 | 2001-06-05 | Cordis Corporation | Vascular filter convertible to a stent and method |
US6726651B1 (en) | 1999-08-04 | 2004-04-27 | Cardeon Corporation | Method and apparatus for differentially perfusing a patient during cardiopulmonary bypass |
US6007558A (en) | 1998-09-25 | 1999-12-28 | Nitinol Medical Technologies, Inc. | Removable embolus blood clot filter |
US7314477B1 (en) * | 1998-09-25 | 2008-01-01 | C.R. Bard Inc. | Removable embolus blood clot filter and filter delivery unit |
US7044134B2 (en) * | 1999-11-08 | 2006-05-16 | Ev3 Sunnyvale, Inc | Method of implanting a device in the left atrial appendage |
US7128073B1 (en) * | 1998-11-06 | 2006-10-31 | Ev3 Endovascular, Inc. | Method and device for left atrial appendage occlusion |
US6231581B1 (en) * | 1998-12-16 | 2001-05-15 | Boston Scientific Corporation | Implantable device anchors |
US6210363B1 (en) | 1999-02-23 | 2001-04-03 | Cardeon Corporation | Methods and devices for occluding a vessel and performing differential perfusion |
US6231589B1 (en) | 1999-03-22 | 2001-05-15 | Microvena Corporation | Body vessel filter |
US6267776B1 (en) * | 1999-05-03 | 2001-07-31 | O'connell Paul T. | Vena cava filter and method for treating pulmonary embolism |
US6273901B1 (en) | 1999-08-10 | 2001-08-14 | Scimed Life Systems, Inc. | Thrombosis filter having a surface treatment |
US6939361B1 (en) | 1999-09-22 | 2005-09-06 | Nmt Medical, Inc. | Guidewire for a free standing intervascular device having an integral stop mechanism |
US6375670B1 (en) * | 1999-10-07 | 2002-04-23 | Prodesco, Inc. | Intraluminal filter |
US6364895B1 (en) * | 1999-10-07 | 2002-04-02 | Prodesco, Inc. | Intraluminal filter |
US6994092B2 (en) * | 1999-11-08 | 2006-02-07 | Ev3 Sunnyvale, Inc. | Device for containing embolic material in the LAA having a plurality of tissue retention structures |
FR2801493B1 (en) | 1999-11-26 | 2003-10-03 | Braun Celsa Sa | METHOD FOR MANUFACTURING A MONOBLOCK BLOOD FILTER |
US6540767B1 (en) * | 2000-02-08 | 2003-04-01 | Scimed Life Systems, Inc. | Recoilable thrombosis filtering device and method |
US6517573B1 (en) * | 2000-04-11 | 2003-02-11 | Endovascular Technologies, Inc. | Hook for attaching to a corporeal lumen and method of manufacturing |
US6468290B1 (en) | 2000-06-05 | 2002-10-22 | Scimed Life Systems, Inc. | Two-planar vena cava filter with self-centering capabilities |
DE60124285T3 (en) | 2000-09-29 | 2011-03-17 | Cordis Corp., Miami Lakes | COATED MEDICAL EQUIPMENT |
DE60234020D1 (en) * | 2001-04-16 | 2009-11-26 | Gary A Strobel | NEW ENDOPHYTIC MUSHROOMS AND ITS USE |
US6623451B2 (en) | 2001-05-01 | 2003-09-23 | Scimed Life Systems, Inc. | Folding spring for a catheter balloon |
US6425882B1 (en) * | 2001-05-01 | 2002-07-30 | Interventional Technologies Inc. | Folding spring for a catheter balloon |
US9204956B2 (en) | 2002-02-20 | 2015-12-08 | C. R. Bard, Inc. | IVC filter with translating hooks |
US20030204168A1 (en) * | 2002-04-30 | 2003-10-30 | Gjalt Bosma | Coated vascular devices |
WO2004024032A1 (en) * | 2002-09-12 | 2004-03-25 | Cook Incorporated | Retrievable filter |
US20040087999A1 (en) * | 2002-10-31 | 2004-05-06 | Gjalt Bosma | Vascular filter with improved anchor or other position retention |
US6989021B2 (en) * | 2002-10-31 | 2006-01-24 | Cordis Corporation | Retrievable medical filter |
US20050080449A1 (en) * | 2002-10-31 | 2005-04-14 | Mulder Rudolf T. | Safety cartridge for retrievable medical filter |
US8361103B2 (en) * | 2003-02-07 | 2013-01-29 | Karla Weaver | Low profile IVC filter |
US7763045B2 (en) * | 2003-02-11 | 2010-07-27 | Cook Incorporated | Removable vena cava filter |
US7534251B2 (en) * | 2003-02-11 | 2009-05-19 | Boston Scientific Scimed, Inc. | Retrievable IVC filter |
US20040186510A1 (en) * | 2003-03-18 | 2004-09-23 | Scimed Life Systems, Inc. | Embolic protection ivc filter |
US7597704B2 (en) * | 2003-04-28 | 2009-10-06 | Atritech, Inc. | Left atrial appendage occlusion device with active expansion |
EP1648340B1 (en) | 2003-05-19 | 2010-03-03 | SeptRx, Inc. | Tissue distention device and related methods for therapeutic intervention |
US7896898B2 (en) * | 2003-07-30 | 2011-03-01 | Boston Scientific Scimed, Inc. | Self-centering blood clot filter |
US7735493B2 (en) | 2003-08-15 | 2010-06-15 | Atritech, Inc. | System and method for delivering a left atrial appendage containment device |
US20050055045A1 (en) * | 2003-09-10 | 2005-03-10 | Scimed Life Systems, Inc. | Composite medical devices |
US6994718B2 (en) * | 2003-10-29 | 2006-02-07 | Medtronic Vascular, Inc. | Distal protection device for filtering and occlusion |
US7056286B2 (en) * | 2003-11-12 | 2006-06-06 | Adrian Ravenscroft | Medical device anchor and delivery system |
US7105064B2 (en) * | 2003-11-20 | 2006-09-12 | International Flavors & Fragrances Inc. | Particulate fragrance deposition on surfaces and malodour elimination from surfaces |
US7716801B2 (en) * | 2003-11-24 | 2010-05-18 | Medtronic Vascular, Inc. | Low-profile distal protection device |
US8162972B2 (en) | 2004-01-22 | 2012-04-24 | Rex Medical, Lp | Vein filter |
US9510929B2 (en) | 2004-01-22 | 2016-12-06 | Argon Medical Devices, Inc. | Vein filter |
US7976562B2 (en) | 2004-01-22 | 2011-07-12 | Rex Medical, L.P. | Method of removing a vein filter |
US8500774B2 (en) | 2004-01-22 | 2013-08-06 | Rex Medical, L.P. | Vein filter |
US7704266B2 (en) * | 2004-01-22 | 2010-04-27 | Rex Medical, L.P. | Vein filter |
US20060106447A1 (en) * | 2004-01-26 | 2006-05-18 | Nmt Medical, Inc. | Adjustable stiffness medical system |
US8308750B2 (en) * | 2004-03-10 | 2012-11-13 | Boston Scientific Scimed, Inc. | Removable intravascular devices and methods of making and using the same |
JP4898988B2 (en) * | 2004-04-16 | 2012-03-21 | クック メディカル テクノロジーズ エルエルシー | Retrievable vena cava filter with primary struts to enhance retrieval and delivery performance |
ATE447903T1 (en) * | 2004-04-16 | 2009-11-15 | Cook Inc | REMOVABLE VENA CAVA FILTER WITH FOLDED INWARD-FACING ANCHORING HOOK |
EP1737385B1 (en) * | 2004-04-16 | 2010-12-15 | Cook Incorporated | Removable vena cava filter with anchoring feature for reduced trauma |
JP4918636B2 (en) * | 2004-04-16 | 2012-04-18 | クック メディカル テクノロジーズ エルエルシー | Retrievable vena cava filter with minimal damage in a folded configuration |
US7625390B2 (en) | 2004-04-16 | 2009-12-01 | Cook Incorporated | Removable vena cava filter |
US8801746B1 (en) | 2004-05-04 | 2014-08-12 | Covidien Lp | System and method for delivering a left atrial appendage containment device |
US20050283166A1 (en) * | 2004-06-17 | 2005-12-22 | Secant Medical, Llc | Expandible snare |
US20060015137A1 (en) * | 2004-07-19 | 2006-01-19 | Wasdyke Joel M | Retrievable intravascular filter with bendable anchoring members |
US20060030921A1 (en) * | 2004-08-03 | 2006-02-09 | Medtronic Vascular, Inc. | Intravascular securement device |
US7704267B2 (en) | 2004-08-04 | 2010-04-27 | C. R. Bard, Inc. | Non-entangling vena cava filter |
US7794472B2 (en) * | 2004-08-11 | 2010-09-14 | Boston Scientific Scimed, Inc. | Single wire intravascular filter |
US20060041271A1 (en) | 2004-08-20 | 2006-02-23 | Gjalt Bosma | Vascular filter with sleeve |
US7927346B2 (en) * | 2004-09-10 | 2011-04-19 | Stryker Corporation | Diversion device to increase cerebral blood flow |
CA2844155A1 (en) * | 2004-09-27 | 2006-04-06 | Rex Medical, L.P. | Vein filter |
AU2005289628B2 (en) * | 2004-09-27 | 2010-12-16 | Cook, Inc. | Removable vena cava filter comprising struts having axial beds |
WO2006042114A1 (en) | 2004-10-06 | 2006-04-20 | Cook, Inc. | Emboli capturing device having a coil and method for capturing emboli |
US7959645B2 (en) * | 2004-11-03 | 2011-06-14 | Boston Scientific Scimed, Inc. | Retrievable vena cava filter |
US7794473B2 (en) * | 2004-11-12 | 2010-09-14 | C.R. Bard, Inc. | Filter delivery system |
US8267954B2 (en) * | 2005-02-04 | 2012-09-18 | C. R. Bard, Inc. | Vascular filter with sensing capability |
US8945169B2 (en) | 2005-03-15 | 2015-02-03 | Cook Medical Technologies Llc | Embolic protection device |
US8221446B2 (en) * | 2005-03-15 | 2012-07-17 | Cook Medical Technologies | Embolic protection device |
US20070032816A1 (en) * | 2005-04-04 | 2007-02-08 | B.Braun Medical | Removable Filter Head |
US8574259B2 (en) * | 2005-05-10 | 2013-11-05 | Lifescreen Sciences Llc | Intravascular filter with drug reservoir |
CA2607580C (en) | 2005-05-12 | 2016-12-20 | C.R. Bard Inc. | Removable embolus blood clot filter |
US7850708B2 (en) | 2005-06-20 | 2010-12-14 | Cook Incorporated | Embolic protection device having a reticulated body with staggered struts |
US8109962B2 (en) | 2005-06-20 | 2012-02-07 | Cook Medical Technologies Llc | Retrievable device having a reticulation portion with staggered struts |
US7771452B2 (en) | 2005-07-12 | 2010-08-10 | Cook Incorporated | Embolic protection device with a filter bag that disengages from a basket |
US7766934B2 (en) | 2005-07-12 | 2010-08-03 | Cook Incorporated | Embolic protection device with an integral basket and bag |
EP1904217B1 (en) * | 2005-07-19 | 2013-03-27 | SeptRx, Inc. | Embolic filtering method and apparatus |
US8187298B2 (en) | 2005-08-04 | 2012-05-29 | Cook Medical Technologies Llc | Embolic protection device having inflatable frame |
CA2616818C (en) | 2005-08-09 | 2014-08-05 | C.R. Bard, Inc. | Embolus blood clot filter and delivery system |
US8377092B2 (en) | 2005-09-16 | 2013-02-19 | Cook Medical Technologies Llc | Embolic protection device |
US7972359B2 (en) * | 2005-09-16 | 2011-07-05 | Atritech, Inc. | Intracardiac cage and method of delivering same |
US8632562B2 (en) | 2005-10-03 | 2014-01-21 | Cook Medical Technologies Llc | Embolic protection device |
US8182508B2 (en) | 2005-10-04 | 2012-05-22 | Cook Medical Technologies Llc | Embolic protection device |
US8252017B2 (en) | 2005-10-18 | 2012-08-28 | Cook Medical Technologies Llc | Invertible filter for embolic protection |
US8216269B2 (en) | 2005-11-02 | 2012-07-10 | Cook Medical Technologies Llc | Embolic protection device having reduced profile |
US8152831B2 (en) | 2005-11-17 | 2012-04-10 | Cook Medical Technologies Llc | Foam embolic protection device |
CA2630217C (en) | 2005-11-18 | 2016-10-11 | C.R. Bard, Inc. | Vena cava filter with filament |
US20070135826A1 (en) | 2005-12-01 | 2007-06-14 | Steve Zaver | Method and apparatus for delivering an implant without bias to a left atrial appendage |
US9730781B2 (en) | 2005-12-30 | 2017-08-15 | C. R. Bard, Inc. | Embolus blood clot filter removal system and method |
EP1965728A2 (en) | 2005-12-30 | 2008-09-10 | C.R. Bard, Inc. | Embolus blood clot filter with floating filter basket |
EP1965729A2 (en) * | 2005-12-30 | 2008-09-10 | C.R. Bard, Inc. | Removable blood clot filter with edge for cutting through the endothelium |
US8734479B2 (en) * | 2005-12-30 | 2014-05-27 | C.R. Bard, Inc. | Embolus blood clot filter delivery system |
EP1965727A2 (en) * | 2005-12-30 | 2008-09-10 | C.R.Bard, Inc. | Embolus blood clot filter with post delivery actuation |
US9107733B2 (en) * | 2006-01-13 | 2015-08-18 | W. L. Gore & Associates, Inc. | Removable blood conduit filter |
US20070191878A1 (en) * | 2006-01-20 | 2007-08-16 | Segner Garland L | Body vessel filter |
WO2007133366A2 (en) * | 2006-05-02 | 2007-11-22 | C. R. Bard, Inc. | Vena cava filter formed from a sheet |
US9326842B2 (en) | 2006-06-05 | 2016-05-03 | C. R . Bard, Inc. | Embolus blood clot filter utilizable with a single delivery system or a single retrieval system in one of a femoral or jugular access |
US10076401B2 (en) | 2006-08-29 | 2018-09-18 | Argon Medical Devices, Inc. | Vein filter |
US20080071307A1 (en) | 2006-09-19 | 2008-03-20 | Cook Incorporated | Apparatus and methods for in situ embolic protection |
US8961557B2 (en) | 2007-01-31 | 2015-02-24 | Stanley Batiste | Intravenous filter with fluid or medication infusion capability |
US20150335415A1 (en) | 2007-01-31 | 2015-11-26 | Stanley Batiste | Intravenous filter with guidewire and catheter access guide |
US9901434B2 (en) | 2007-02-27 | 2018-02-27 | Cook Medical Technologies Llc | Embolic protection device including a Z-stent waist band |
US8795351B2 (en) | 2007-04-13 | 2014-08-05 | C.R. Bard, Inc. | Migration resistant embolic filter |
US20080294189A1 (en) * | 2007-05-23 | 2008-11-27 | Moll Fransiscus L | Vein filter |
US20090005803A1 (en) * | 2007-06-27 | 2009-01-01 | Stanley Batiste | Removable vascular filter and method of filter use |
US8252018B2 (en) | 2007-09-14 | 2012-08-28 | Cook Medical Technologies Llc | Helical embolic protection device |
US9138307B2 (en) | 2007-09-14 | 2015-09-22 | Cook Medical Technologies Llc | Expandable device for treatment of a stricture in a body vessel |
US8419748B2 (en) | 2007-09-14 | 2013-04-16 | Cook Medical Technologies Llc | Helical thrombus removal device |
US8246672B2 (en) * | 2007-12-27 | 2012-08-21 | Cook Medical Technologies Llc | Endovascular graft with separately positionable and removable frame units |
WO2010025379A1 (en) * | 2008-08-29 | 2010-03-04 | Cook Incorporated | Vena cava filter having plurality of hooks |
US8246648B2 (en) * | 2008-11-10 | 2012-08-21 | Cook Medical Technologies Llc | Removable vena cava filter with improved leg |
US8388644B2 (en) | 2008-12-29 | 2013-03-05 | Cook Medical Technologies Llc | Embolic protection device and method of use |
US10357640B2 (en) | 2009-05-15 | 2019-07-23 | Intersect Ent, Inc. | Expandable devices and methods for treating a nasal or sinus condition |
EP3505136A1 (en) | 2009-07-29 | 2019-07-03 | C.R. Bard Inc. | Tubular filter |
EP2496189A4 (en) | 2009-11-04 | 2016-05-11 | Nitinol Devices And Components Inc | Alternating circumferential bridge stent design and methods for use thereof |
US9649211B2 (en) | 2009-11-04 | 2017-05-16 | Confluent Medical Technologies, Inc. | Alternating circumferential bridge stent design and methods for use thereof |
US10022212B2 (en) | 2011-01-13 | 2018-07-17 | Cook Medical Technologies Llc | Temporary venous filter with anti-coagulant delivery method |
US11458007B2 (en) * | 2012-08-10 | 2022-10-04 | W. L. Gore & Associates, Inc. | Devices and methods for limiting a depth of penetration for an anchor within an anatomy |
US10406332B2 (en) | 2013-03-14 | 2019-09-10 | Intersect Ent, Inc. | Systems, devices, and method for treating a sinus condition |
US9597206B2 (en) * | 2013-03-15 | 2017-03-21 | Boston Scientific Scimed, Inc. | Anti-migratory stent coating |
CN106308974B (en) * | 2015-06-30 | 2018-08-03 | 先健科技(深圳)有限公司 | Filter |
AU2018200129A1 (en) * | 2017-02-21 | 2018-09-06 | Coherex Medical, Inc. | Medical device for modification of left atrial appendage and related systems and methods |
CN110831520B (en) | 2017-04-27 | 2022-11-15 | 波士顿科学国际有限公司 | Occlusive medical devices with fabric retention barbs |
CN112714632A (en) | 2018-08-21 | 2021-04-27 | 波士顿科学医学有限公司 | Barbed protruding member for cardiovascular devices |
EP3998962A1 (en) | 2019-07-17 | 2022-05-25 | Boston Scientific Scimed, Inc. | Left atrial appendage implant with continuous covering |
EP3986284A1 (en) | 2019-08-30 | 2022-04-27 | Boston Scientific Scimed, Inc. | Left atrial appendage implant with sealing disk |
US11903589B2 (en) | 2020-03-24 | 2024-02-20 | Boston Scientific Scimed, Inc. | Medical system for treating a left atrial appendage |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2281448A (en) * | 1941-09-17 | 1942-04-28 | Scully Signal Co | Device for partially obstructing pipes |
US3540431A (en) * | 1968-04-04 | 1970-11-17 | Kazi Mobin Uddin | Collapsible filter for fluid flowing in closed passageway |
US3815578A (en) * | 1973-05-11 | 1974-06-11 | Investors In Ventures Inc | Method of inserting an implant into a portion of a tubular organ whose mucous lining has been partially removed |
US3952747A (en) * | 1974-03-28 | 1976-04-27 | Kimmell Jr Garman O | Filter and filter insertion instrument |
FR2570288B1 (en) * | 1984-09-14 | 1988-11-25 | Celsa Composants Electr Sa | FILTER, PARTICULARLY FOR THE RETENTION OF BLOOD CLOTS, ITS MANUFACTURING METHOD AND DEVICES FOR ITS PLACEMENT |
FR2573646B1 (en) * | 1984-11-29 | 1988-11-25 | Celsa Composants Electr Sa | PERFECTED FILTER, PARTICULARLY FOR THE RETENTION OF BLOOD CLOTS |
DE3719705A1 (en) * | 1986-06-13 | 1987-12-17 | Olympus Optical Co | DEVICE FOR HYPERTHERMAL HEATING THE BODY |
FR2608418B1 (en) * | 1986-12-18 | 1992-07-31 | Pieronne Alain | DEVICE FOR PROVIDING THE OBSTRUCTION OF A NATURAL CHANNEL SUCH AS AN ARTERY IN PARTICULAR IN A PREDETERMINED AREA |
US4817600A (en) * | 1987-05-22 | 1989-04-04 | Medi-Tech, Inc. | Implantable filter |
FR2632848A1 (en) * | 1988-06-21 | 1989-12-22 | Lefebvre Jean Marie | FILTER FOR MEDICAL USE |
-
1990
- 1990-03-28 FR FR9004552A patent/FR2660189B1/en not_active Expired - Lifetime
- 1990-10-02 ES ES90402717T patent/ES2071795T3/en not_active Expired - Lifetime
- 1990-10-02 EP EP90402717A patent/EP0448891B1/en not_active Expired - Lifetime
- 1990-10-02 AT AT90402717T patent/ATE119013T1/en not_active IP Right Cessation
- 1990-10-02 DE DE69017427T patent/DE69017427T2/en not_active Expired - Lifetime
- 1990-10-10 US US07/595,191 patent/US5108418A/en not_active Expired - Lifetime
- 1990-10-12 CA CA002027441A patent/CA2027441C/en not_active Expired - Lifetime
- 1990-12-11 JP JP2415723A patent/JPH04129549A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69017427D1 (en) | 1995-04-06 |
EP0448891B1 (en) | 1995-03-01 |
FR2660189B1 (en) | 1992-07-31 |
ATE119013T1 (en) | 1995-03-15 |
JPH04129549A (en) | 1992-04-30 |
EP0448891A1 (en) | 1991-10-02 |
US5108418A (en) | 1992-04-28 |
FR2660189A1 (en) | 1991-10-04 |
CA2027441A1 (en) | 1991-09-29 |
ES2071795T3 (en) | 1995-07-01 |
DE69017427T2 (en) | 1995-10-26 |
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EEER | Examination request | ||
MKEX | Expiry |