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Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular s

Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular site and a penetrator is advanced from the catheter so as to penetrate outwardly through the wall of the blood vessel in the direction of the target site. Thereafter, a delivery catheter is passed through a lumen of the penetrator to the target site. A desired substance or apparatus is then delivered to or obtained from the target site. In some applications, the penetrator may be retracted into the vessel wall penetrating catheter and the vessel wall penetrating catheter may be removed, leaving the delivery catheter in place for chronic or continuous delivery of substance(s) to and/or obtaining of information or samples from the target site. Alternatively, a delivery catheter having an occlusion member or balloon may be advanced into a vein or venule and the occlusion member or balloon may be used to occlude the lumen of the vein or venule during and after injection of a substance through the catheter, such that the substance will not be carried away by normal venous blood flow and will remain in the vein or venule for a sufficient period of time to have its intended effect (e.g. to enter adjacent tissues through capillary beds drained by that vein or venule).

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Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular s

Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular site and a penetrator is advanced from the catheter so as to penetrate outwardly through the wall of the blood vessel in the direction of the target site. Thereafter, a delivery catheter is passed through a lumen of the penetrator to the target site. A desired substance or apparatus is then delivered to or obtained from the target site. In some applications, the penetrator may be retracted into the vessel wall penetrating catheter and the vessel wall penetrating catheter may be removed, leaving the delivery catheter in place for chronic or continuous delivery of substance(s) to and/or obtaining of information or samples from the target site. Alternatively, a delivery catheter having an occlusion member or balloon may be advanced into a vein or venule and the occlusion member or balloon may be used to occlude the lumen of the vein or venule during and after injection of a substance through the catheter, such that the substance will not be carried away by normal venous blood flow and will remain in the vein or venule for a sufficient period of time to have its intended effect (e.g. to enter adjacent tissues through capillary beds drained by that vein or venule). o as to define the contribution of the different sensory-motor regulation loops, towards maintaining balance in dynamic conditions. 2. A device for analysis as claimed in claim 1, wherein the means for support of the stand of the mobile platform consist of two arches having a circular section, disposed laterally beneath the stand. 3. A device for analysis as claimed in claim 1, wherein the unit for acquisition and processing (9) is programmed in order to acquire the signals emitted by the sensors (4) of the static platform (1), with a frequency of 40 Hz or more. 4. A device for analysis as claimed in claim 1, wherein the unit for acquisition and processing (9) is programmed to proceed with objective frequential analyses of the oscillations, in three frequency bands, i.e. a band of 0 to 0.5 Hz, a band of 0.5 Hz to 2 Hz, and a band of 2 Hz to 20 Hz. 5. A device for analysis of the posture of a person in orthostatic and/or dynamic conditions, comprising: a static force platform having a plurality of sensors, said plural sensors emitting signals which are representative of a position and absolute value of forces exerted on the static platform by a person in a position of orthostatic balance; a mobile platform, which is placed on the static platform, and consists of a stand which is secured to a support having a cylindrical lower support surface, an area of contact of the cylindrical support surface with the static platform including a generatrix of the lower cylindrical support surface, said generatrix forming a pivot of the mobile platform; a seat with an anatomical shape, said seat and said mobile platform having means for relative positioning or centering and maintenance of the sear on the mobile platform; and a unit for acquisition and processing of the signals emitted by the sensors, said unit being programmed in order to acquire said signals with a pre-determined frequency, and to proceed with an analysis of the problems with balance and posture of the person, according to frontal and saoirrai balance pianos. 6. A device for analysis as claimed in claim 5, wherein the means for relative positioning of the seat (10) and of the platform (5) comprise a central aperture which is provided in the stand (6) of the said mobile platform, and a centring rod (11) which is secured beneath the said seat, and has a cross-section suitable for being accommodated in the aperture of the said stand. crohooks and complementary microloops. 5. The apparatus for treating plantar fiasciitis according to claim 1, wherein the adjustable fastener is connected to the tension strap at an end portion. 6. The plantar fascia tension device according to claim 1, further comprising the second adjustable fastener fixedly connected to the heelward portion of the slipper. 7. An method for treating plantar fasciitis comprising: providing a slipper having a substantially planar sole portion and a foot retaining portion, the foot retaining portion having an open ankle portion, an enclosed toe portion and a heel portion, the sole portion having a toe end and a heel end; providing a tension strap fixedly connected to the toe end, the tension strap sized and configured to circumscribe the slipper horizontally between the toe portion and the heel portion; providing an adjustable fastener fixedly connected to the tension strap; placing a foot in the slipper at the open ankle portion; circumscribing the slipper with the tension strap between the toe portion and the heel portion to place at least one toe in a dorsiflexed position; and securing the adjustable fastener to maintain the at least one toe in the dorsiflexed position. 8. The method for treating plantar fasciitis according to claim 7, wherein placing the foot is performed at a period of reduced activity for the foot. gh molecular weight polyolefin having a node and fibril structure comprising nodes interconnected by fibrils. 2. The balloon of claim 1, wherein the ultrahigh molecular weight polyolefin has a molecular weight of about 2 million to about 10 million gm/mole. 3. The balloon of claim 1 wherein the ultrahigh molecular weight polyolefin comprises an ultrahigh molecular weight polyethylene. 4. The balloon of claim 1 wherein the balloon comprises a microporous ultrahigh molecular weight polyolefin having a porosity of about 20% to about 90%. 5. The balloon of claim 1, wherein the balloon is inflatable from a noninflated state, and the ultrahigh molecular weight polyolefin exhibits volumetric compressibility in the uninflated state. 6. The balloon of claim 1 wherein the balloon in a noninflated state comprises ultrahigh molecular weight polyolefin in a compressed configuration having a reduced porosity relative to the ultrahigh molecular weight polyolefin in a noncompressed configuration. 7. The balloon of claim 6, wherein the ultrahigh molecular weight polyolefin in the compressed configuration has a porosity of about 20% to about 60%. 8. The balloon of claim 6, wherein the balloon expands compliantly at pressures below about 6 atm and substantially less compliantly at pressures above about 6 atm. 9. The balloon of claim 8, wherein the balloon has an outer diameter which expands by about 70% to about 450% of the uninflated diameter at pressures below about 6 atm. 10. The balloon of claim 1, wherein the ultra high molecular weight polyolefin having a node and fibril microstructure is prepared from aggregated polyolefin particles, the aggregate having a diameter of about 100 μm to about 700 μm. 11. The balloon of claim 10, wherein the aggregate comprises ultra high molecular weight polyolefin primary particles having a particle size of about 0.1 μm to about 40 μm. 12. A balloon catheter having an elongated shaft having a proximal end, a distal end and at least one lumen, and a balloon on a distal shaft section having an interior in fluid communication with the shaft lumen, the balloon comprising the balloon of claim 1. he catheter assembly of claim 5 further comprising a bifurcated stent, the bifurcated stent having a first arm region, a second arm region and a common region, the first arm region being disposed about a distal portion of the first balloon, the second arm region being disposed about a distal portion of the second balloon, the common region being disposed about the at least a portion of the first balloon and the at least a portion of the second balloon which are substantially parallel, at least a portion of the common region having a substantially circular cross-sectional profile. 7. The catheter assembly of claim 5 wherein the first balloon and the second balloon are each folded in a predetermined manner so as to provide the circular cross-section of the at least a portion of the distal end of the assembly. 8. The catheter assembly of claim 7 wherein the first balloon has at least two balloon folds and the second balloon has at least two balloon folds. 9. The catheter assembly of claim 7 wherein at least a portion of each of the at least two balloon folds of the first balloon at least partially overlap at least a portion of each of the at least two balloon folds of the second balloon. 10. The catheter assembly of claim 8 wherein each of the at least two balloon folds of the first balloon are folded in an undulating configuration. 11. The catheter assembly of claim 7 wherein the first balloon has at least three folds and the second balloon has at least two folds. 12. The catheter assembly of claim 6 wherein the first arm region and the second arm region each have a substantially D-shaped profile. 13. The catheter assembly of claim 12 where in the first arm region has a first curved portion and a first flat portion and the second arm region has a second curved portion and a second flat portion, the first flat portion being positioned immediately adjacent to the second flat portion. 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