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EP1499234A1 - Ancre pour capteur implante dans une lumiere anatomique - Google Patents

Ancre pour capteur implante dans une lumiere anatomique

Info

Publication number
EP1499234A1
EP1499234A1 EP02727830A EP02727830A EP1499234A1 EP 1499234 A1 EP1499234 A1 EP 1499234A1 EP 02727830 A EP02727830 A EP 02727830A EP 02727830 A EP02727830 A EP 02727830A EP 1499234 A1 EP1499234 A1 EP 1499234A1
Authority
EP
European Patent Office
Prior art keywords
sensor
anchor
lumen
support
sensor support
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.)
Withdrawn
Application number
EP02727830A
Other languages
German (de)
English (en)
Inventor
Jacob Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microsense Ltd
Original Assignee
Microsense Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Microsense Ltd filed Critical Microsense Ltd
Priority claimed from PCT/IB2002/001476 external-priority patent/WO2003092492A1/fr
Publication of EP1499234A1 publication Critical patent/EP1499234A1/fr
Withdrawn legal-status Critical Current

Links

Definitions

  • the present invention relates generally to an anchor and method for attaching a sensor in a bodily lumen, more specifically, the anchor provides for fixation of the sensor at the center of a bodily lumen, such as a coronary artery or other vessels, for taking more accurate measurements within the lumen and generally where the position at the center of the lumen is more desirable.
  • a bodily lumen such as a coronary artery or other vessels
  • the circulatory system is a complex network of arteries and veins that connects the heart to every area of the body. Physicians have been able to utilize long flexible catheters to deliver specialized tools and medicine to diagnose and treat heart disease.
  • the entrance to the arterial system is typically through a needle puncture made in the femoral artery.
  • the brachial and radial arteries can also be utilized.
  • U.S. Patent No. 4,485,813 describes a sensor that may be permanently implanted in a specific location within the human body in an implantable medical device such as a pacemaker. This sensor is used to monitor certain physical and/or physiological parameters of the subject in which it has been implanted. This sensor can be maintained in the subject for extended periods of time to continuously monitor information about the subject using the pacemaker.
  • Sensors used to monitor parameters within lumens may be highly sensitive to mechanical pressure. As a result there is a great risk of the sensor being damaged during insertion and or positioning. Damage to the sensor could result in poor performance or non- operability of the sensor. For example, should some parts of a sensor break during insertion, the sensor would be rendered inoperable. Due to the risks associated with the procedures for the insertion of sensors, there would be great costs and risks involved should a sensor be damaged or destroyed during insertion.
  • Physiological conditions and biochemical parameters within a lumen can differ when measured at different distances from the walls of the lumen, as fluid flow at the wall of a bodily lumen may not accurately represent fluid flow through the bodily lumen overall. Additionally, disposing a sensor adjacent to the wall of a lumen may cause the sensor to be covered with tissue from the lumen wall, thereby causing a negative effect on the functionality of the sensor if its exposure to the fluid is vital to its operation.
  • an anchor is delivered with a sensor through a catheter and inserted in a bodily lumen.
  • the sensor is positioned about in the center of the lumen with minimal disturbance to blood flow in the lumen.
  • the anchor may be made of a super-elastic wire-like material and may have support legs with protrusions or hooks or the like. When the anchor is deployed from the catheter legs of the anchor expand or spring outwardly with these protrusions to attach the lumen wall.
  • the sensor is then fixated at the center of the lumen with minimal invasive sensor deployment and minimal disturbance to flow.
  • the sensor may monitor various properties concerning the blood vessel, the fluid and the flow in it, to allow physicians to assess the condition of a patient.
  • multiple sensors may be deployed on the same anchor allowing for positioning of sensors at a prescribed distance from each other.
  • the sensor may be mounted using a single support leg.
  • the support leg may have one or many protrusions that allow the support leg to be mounted to the lumen wall.
  • Figure 1 A is a drawing of a first fixation device for a sensor according to a preferred embodiment of the present invention
  • Figure 1 B is an illustration of a method for fixation of the sensor of Fig. 1 A within a lumen according to a preferred embodiment of the present invention
  • Figure 2 A and 2B show illustrations of a second fixation device for a sensor before expansion and after expansion, respectively, according to a preferred embodiment of the present invention.
  • Figure 3 A and 3B show illustrations of a third fixation device for a sensor before expansion and after expansion, respectively, according to a preferred embodiment of the present invention.
  • Figure 4 illustrates a second method for fixation of a sensor within a lumen using the third fixation device shown in Figs. 3 A and 3B, according to a preferred embodiment of the present invention.
  • Figure 5 shows an illustration of a mask for etching of a flat design of the fixation device of Figs. 3 A and 3B, according to a preferred embodiment of the present invention.
  • Figure 6 shows an illustration of a mask for etching of a flat design of the fixation device of Figs. 2A and 2B, according to a preferred embodiment of the present invention.
  • Figure 7 shows a fourth fixation device for a sensor before expansion, according to a preferred embodiment of the present invention.
  • FIG. 8 shows an illustration of a mask for etching of a flat design of the fixation device of Fig. 7, according to a preferred embodiment of the present invention.
  • FIGs. 9A and 9B show an enlarged side view of a cross section of the sensor support from Fig. 3 A along the line formed between points a' and a' according to two different embodiments of the present invention.
  • Figure 10A shows an exemplary anchor for a sensor to be positioned at the center of a bodily lumen.
  • Figure 10B shows a catheter for delivering the anchor to a bodily lumen.
  • Figure 10C shows an anchor attached to a bodily lumen, with the sensor positioned at the center of the bodily lumen.
  • Figure 10D shows another exemplary anchor for a sensor to be positioned at the center of a bodily lumen.
  • Figure 10E shows exemplary support legs of the anchor shown in Figure 10D.
  • Described herein is a method and device for fixation of a sensor in a bodily lumen.
  • remotely interrogated sensors may be fixed within bodily lumens.
  • Such sensors may be used to record and/or monitor parameters such as, for example, physiological parameters, e.g., pressure and velocity of flow, and biochemical parameters, e.g., level of gases and biochemical substances in the fluid contained in the lumen.
  • the present invention allows for a sensor device, which may be implanted, either temporarily or permanently, in a lumen and interrogated from an exterior position, for example, the surface of the body, at any time without any intervention or physical intrusion.
  • the present invention provides a method and device for the fixation of such sensors in specific desired locations and/or preferred positions in the lumen.
  • Such fixation of the sensors may be achieved at the time of any required surgical or minimally invasive intervention or independently by catheterization.
  • the sensor may be connected to the repair device, e.g., the stitches of a bypass, an aneurismal repair device, a stent, etc., or mounted on its own dedicated fixation device.
  • a sensor may be fixed inside a lumen by any number of means, including directly attaching the sensor in place, for example, by including holes in the sensor, e.g., around its periphery, and attaching the sensor to the stitches of a bypass during surgery, or through the use of a surgical adhesive.
  • a sensor may also be positioned inside a lumen using a carrier or support (of any shape and size) which may be part of, or coupled to a repair device, e.g., a stent or aneurismal correction device which holds the sensor in place adjacent to or near the repair device.
  • a sensor may be positioned inside a lumen using a dedicated device, e.g., an anchoring ring, which is held within a lumen and fixed in place, for example, by expansion with a catheter balloon.
  • the anchoring ring does not necessarily have to be circular in shape, but may instead be oval or any other shape best suited for the location where placed.
  • the anchoring ring may have a separate carrier or support to hold the sensor.
  • the carrier or support may be any shape or size, including, for example, circular, square, rectangular, diamond shaped, linear with or without a bent or curved end, etc, and it may be constructed as only a border or as a solid piece of material.
  • Multiple sensors may be attached to a carrier or carriers, for example, two sensors with one placed on each side of a stent, or two sensors attached at both connections of a bypass section, e.g., one sensor at the entrance to an aneurismal sleeve and one at the outside of the sleeve to monitor for a possible leak around the sleeve.
  • a sensor may have multiple repair devices or dedicated devices supporting it within a lumen, either with or without a carrier, for example, a sensor supported between two anchoring rings.
  • a sensor may be supported by or connected to a carrier, for example, by providing a groove-like depression(s) or notch-like depression(s) in the sensor into which a portion(s) of the carrier may be inserted, or the sensor may be configured such that a portion(s) of the sensor, for example, a lip-like extension(s) or protrusion(s), may extend beyond the dimensions of the carrier to be supported thereby. Additionally, the sensor may be attached to the carrier, for example, by welding and/or bonding by an adhesive or any combinations of the above.
  • a sensor After a sensor is fixed within a lumen, for example, during an intervention procedure such as aneurismal device implantation, PTCA, coronary bypass surgery, etc., it may thereafter be monitored periodically to track any of a variety of parameters or to assess the effectiveness of the procedure that was performed. For example, the sensor may be monitored periodically to assess the long term progress or deterioration of the corrective effect, and the progress of relevant symptoms of a disease.
  • Multiple sensors may be implanted and may be momtored individually or simultaneously to derive gradients along a lumen and across a repair device or section. Such sensors may be fixed in any number of positions within a lumen, for example, on both sides of a lesion treated by PTCA with or without a stent, on both sides of a bypass section, and before, after and around an aneurismal repair device.
  • the device also provides for a device and method for the protection of sensors during insertion.
  • sensors may be coated with a protective layer which is soluble in an aqueous solution, and which disappears immediately or soon after deployment of the sensor in the body.
  • the material used for, thickness of, and hardness of the coating may vary, for example, depending on the location of the sensor, the type of sensor, protection level sought, and rate of dissolution desired.
  • the fixation device may be constructed by first creating a flat version of the desired pattern for the fixation device, for example, from a piece of thin stainless steel sheet metal or some other material, e.g., any metal, non-metallic or bioabsorbable material.
  • the flat pattern can be produced through any suitable technique, such as etching the design into the sheet metal, by cutting with a very fine laser, or by any other technique.
  • the material is deformed so as to cause its edges to meet.
  • the flat metal is rolled until the edges meet.
  • the portion which holds the sensor may be located along the circumference of the fixation device, may extend perpendicular to the cross-section of the ring formed or may extend in some other manner from the ring formed by the fixation device.
  • the locations where edges meet are joined together, such as by spot welding.
  • the fixation device is polished, either mechanically or electrochemically.
  • FIG. 1A and IB illustrate a first fixation device for a sensor and a first method for fixation of a sensor within a lumen, respectively, according to a preferred embodiment of the present invention.
  • FIG. 1A there is shown a sensor 1 having two holes 3 in its periphery for attachment to sutures within a lumen.
  • Fig. IB there is shown a coronary artery 5 starting at the Aorta 7 and having an occlusion 9.
  • a bypass 11 is connected between the Aorta at point 13 and at point 15 beyond the occlusion 9.
  • Sensor 1 is placed either at the proximal ostium 17 or at the proximal part of the bypass 19.
  • sensor 1 may be placed at the distal ostium 21, at the distal part before the distal ostium 23, or at the distal part after the distal ostium 25. Any number of sensors may be used, and they may be placed in any combination of the above positions or any other position desired.
  • the sensor 1 is fixed in place using the two holes 3 for attachment to the sutures.
  • the sensor 1 may be fixed in place using surgical adhesive or a surgical staple(s).
  • FIG. 2 A and 2B there are shown a second fixation device for a sensor before expansion and after expansion, respectively, according to a preferred embodiment of the present invention.
  • FIG. 2A there is shown a stent 30 in a non-expanded state with a first sensor support 32 and a second sensor support 34.
  • the stent 30 may include more than two sensor supports.
  • a third sensor support may be located opposite the first sensor support 32.
  • the stent 30 from Fig. 2A is shown in its expanded state. Expansion may be accomplished, for example, by balloon catheterization or some other procedure.
  • the stent 30 is positioned as it normally is during any medical procedure in which a stent is used.
  • a sensor Prior to expansion, and either prior to or after insertion of the stent 30 into the lumen, a sensor is placed in, placed on or attached to the first sensor support 32 and/or the second sensor support 34. The stent 30 is then either expanded, or inserted into the lumen and then expanded. The same procedure may be used to fix any number of sensors within a lumen, with the additional step of placing each sensor either in or on, or attaching each sensor to its corresponding sensor support. [0041 ] Referring now to Figures 3 A and 3B, there are shown a third fixation device for a sensor before expansion and after expansion, respectively, according to a preferred embodiment of the present invention.
  • FIG. 3 A there is shown a fixation device 40 in the form of an anchoring ring 42, in a non-expanded state coupled to a sensor support 44.
  • the fixation device 40 may be formed of any malleable material, which does not revert automatically to its original shape after being expanded.
  • the anchoring ring 42 is made up of a plurality of elliptical sections 46 connected one to the other at the middle of each of their long portions 48 to form a ring.
  • the sensor support 44 is connected to one of the elliptical sections 46 at a short portion 49, and perpendicular to a cross-section of the anchoring ring 42 forming a circular plane.
  • the sensor support 44 is formed in the shape of a diamond, but can be any shape desired.
  • the anchoring ring 42 may be made of a single sinusoidal ring, with one or more sensor supports attached to the peaks, since it does not serve, any support function for the lumen.
  • Figure 3B shows the fixation device 40 of Fig. 3 A in an expanded state.
  • the fixation device 40 is positioned within the lumen, for example, during an intervention procedure, and expanded, for example, by balloon catheterization or some other procedure.
  • the sensor Prior to expansion, and either prior to or after insertion of the fixation device 40 into the lumen, the sensor is placed in, placed on or attached to the sensor support 42.
  • the fixation device 40 is then either expanded, or inserted into the lumen and then expanded.
  • the same procedure may be used to fix multiple sensors within a lumen, with the additional step of placing each sensor either in or on, or attaching each sensor to a corresponding sensor support.
  • FIG 4 illustrates a second method for fixation of a sensor within a lumen using the third fixation device shown in Figs. 3A and 3B, according to a preferred embodiment of the present invention.
  • a coronary artery 5 starting at the Aorta 7 and having an occlusion 9 is fitted with a bypass 11, which is connected between the Aorta at point 13 and at point 15 beyond the occlusion 9.
  • Sensor 50 which is carried by the sensor support 44 coupled to the anchoring ring 42 of Figs.
  • 3 A and 3B is placed either at the proximal part of the bypass 19, at the distal ostium 21, at the distal part before the distal ostium 23, or at the distal part after the distal ostium 25.
  • Any number of sensors may be used, and they may be placed in any combination of the above positions or any other position desired in which an anchoring ring can be used.
  • the sensor 50 is fixed in place by expansion using balloon catheterization.
  • FIG. 5 there is shown an illustration of a mask for etching of a flat design of the fixation device of Figures. 3A and 3B, according to a preferred embodiment of the present invention.
  • a mask 52 is created for etching a flat design of a fixation device.
  • the flat design is then etched onto a piece of thin sheet metal or some other malleable material.
  • the flat design is next cut from the sheet metal using, for example, a fine laser.
  • the cut flat design is then polished and bent into a circular (or other) shape.
  • Points 54 and 56 show the locations where the flat design is coupled, for example, by welding after it is bent. The welding creates an anchoring ring.
  • Sensor support 58 is positioned approximately at the midpoint of the mask 52, but may alternatively be located at any other position. Additionally, there may be multiple sensor supports, for example, located at both sides of the fixation device design.
  • FIG. 6 there is shown an illustration of a mask for etching of a flat design of the fixation device of Figures. 2A and 2B, according to a preferred embodiment of the present invention.
  • a mask 60 is created for etching a flat design of a stent.
  • the flat design is then etched onto a piece of thin sheet metal or some other malleable material.
  • the flat design is next cut from the sheet metal using, for example, a fine laser.
  • the cut flat design is then polished and bent into a circular (or other) shape and coupled, for example, by welding after it is bent.
  • Sensor support 62 is positioned approximately at the midpoint of the mask 60, but may alternatively be located at any other position. Additionally, there may be multiple sensor supports, for example, located at both sides of the stent design.
  • the fixation device 70 in the form of a dual anchoring ring comprises a first ring 72 and a second ring 74, in a non-expanded state, with a sensor support 76 positioned between the two rings 72, 74.
  • the fixation device 70 may be formed of any malleable material, which does not revert automatically to its original shape after being expanded.
  • the fixation device 70 is made up of a plurality of sections 78 connected one to the other to form two anchoring rings 72, 74.
  • a sensor support 76 is connected to one of the sections 78 of each anchoring ring 72, 74 perpendicular to a cross- section of each of the rings 72, 74 forming a circular plane, and is positioned between the two rings 72, 74.
  • the sensor support is formed in the shape of a diamond, but can be any shape desired. Additionally, there may be multiple sensor supports attached to the fixation device 70. Alternatively, the fixation device 70 may be made of two single sinusoidal rings, with one or more sensor supports attached to the peaks, since it does not serve any support function for the lumen.
  • the fixation device 70 may alternatively be made of two stents, one on each side of a sensor support, or having multiple sensor supports attached thereto.
  • FIG 8 there is shown an illustration of a mask for etching of a flat design of the fixation device of Fig. 7, according to a preferred embodiment of the present invention.
  • a mask 80 is created for etching a flat design of the fixation device.
  • the flat design is then etched onto a piece of thin sheet metal or some other malleable material.
  • the flat design is next cut from the sheet metal using, for example, a fine laser.
  • the cut flat design is then polished and bent into a circular (or other) shape.
  • Points 82 and 83, and points 84 and 85 show the respective locations where the flat design is coupled, for example, by welding after it is bent.
  • the welding creates two anchoring rings.
  • Sensor support 87 is positioned approximately at the midpoint of the mask 80, but may alternatively be located at any other position. Additionally, there may be multiple sensor supports, for example, located at both sides of the fixation device design.
  • FIG. 9A there is shown an enlarged side view of a cross section of the sensor support from Figure 3 A along the line formed between points a' and a'.
  • a groove 90 is formed in two portions of the periphery of sensor 92, for example, by cutting with a wire saw, by etching, by laser cutting, etc., and the sensor 92 is then inserted into the sensor support 44 such that two portions of the sensor support 44 are positioned within the groove 90 providing support for the sensor 92.
  • two notches may be formed in the periphery of the sensor 92 in which the two portions of the sensor support 44 may be positioned.
  • sensor 94 is formed with a lip 96 around its upper edge
  • Sensor 94 may instead be formed with one or more protrusions along its upper edge 98.
  • the lip or protrusion(s) may be located on the bottom or at any other position on the sensor.
  • the sensor 94 is coupled to the sensor support 44, for example, by bonding by an adhesive, welding, soldering, etc., the lip 96 or prot sion(s) to an edge or portion 99 of the sensor support.
  • the sensor 94 may be placed on the sensor support 44 and supported by the lip 96 or by the protrusion(s).
  • a coating may be placed on the sensors to protect them from damage and/or destruction during deployment.
  • the coating may be made from a material that is soluble in an aqueous solution, and may dissolve immediately or soon after deployment of the sensor.
  • the material used, the thickness of the coating and the hardness of the coating will depend to a large extent on the location of the sensor, the type of sensor, and a variety of other factors including the physiology involved, the parameters being measured, and the desired speed of deployment.
  • a first example of a coating is a composition comprising solidified sugar syrup made of approximately equal amounts of glucose and sucrose.
  • the proportions of glucose and sucrose may be varied, however, depending on the application.
  • a second example of a coating is a composition comprising Hydroxy Propyl
  • Methyl Cellulose, Hydroxy Propyl Cellulose and Colloidal Silicone Dioxide all finely ground and mixed in water, which is used for coating pills and is commercially available as Opadry-Oy- 34817 from Colorcon Ltd., Italy.
  • a sensor may be coated by any available method for coating objects including, for example, spraying the coating on the sensor, dipping the sensor in a liquid bath, pouring or dripping the coating onto the sensor, painting the coating onto the sensor, etc. Additionally, the coating may cover only the membrane of the sensor or it may cover a larger portion of the sensor or the entire sensor.
  • an anchor 100 for a sensor 101 is to be positioned at the center of a lumen 102.
  • the anchor in this embodiment that positions the sensor in the center of the lumen has the following advantages over anchors that do not position the sensor in the center of the lumen.
  • the anchors can be made of various sizes and diameters to accommodate the dimensions of the lumen that the sensor is to be inserted and ultimately implanted.
  • the anchor may have a sensor support with a diameter, for example but not limited to, less than 5 mm for small blood vessels.
  • the anchor may also be made of a thickness to minimize the impedance of blood flow in the vessel.
  • the anchor may have a sensor support with a diameter, for example but not limited to, about 9mm. This larger size sensor support may be used where the sensor is subjected to mechanical forces, such as those close to the skin surface. In this case, the anchor provides maximum stability with the larger anchor structure.
  • FIG 10 A shows an exemplary anchor 100.
  • the anchor 100 may be made of a super elastic material, such as Nickel Titanium, or the like.
  • the super elastic material is strong enough to resists elongation, but resilient to the extent of having spring-like memory when deformed.
  • a sensor frame 103 is provided to hold the sensor 101 in place when the anchor 100 is positioned inside the lumen 102.
  • the sensor frame 103 may be disposed perpendicular to the length of the lumen 102, as shown in 103a, or parallel to the length of the lumen 102, as shown in 103b, though is not limited to those positions.
  • the anchor 100 has a plurality of support legs 104.
  • the support legs 104 are attached to the sensor frame 103 at a first end 1041, and have protrusions 105 at a second end 1042, where the protrusions 105 may be attached to the second end 1042, or an extension of the supports legs 104 themselves.
  • the protrusions 105 may be in the shape of a hook, or the hke.
  • the protrusion 105 may be, but is not limited to, a structure including a serrated edge, a beveled edge, an adhesive, a magnetic clamp, a mechanical clamp, a suction cup, or any combinations of these structures.
  • the protrusions 105 may be made sharp enough to dig into the tissue however do so with minimum trauma.
  • the sensor frame 103 is disposed at approximately the center of the anchor 100, along its length, although not limited to such a position.
  • Figure 10B shows the anchor 100 of figure 10A disposed within a catheter 106.
  • the catheter 106 can position the anchor 100 within the lumen 102 with minimal disturbance to flow.
  • the anchor 100 is constrained within the catheter 106 such that the sensor 101 disposed within the sensor frame 103 is not substantially deformed from the center of the anchor 100.
  • the support legs 104 of the anchor 100 are deformed to fit into the catheter 106.
  • the anchor 100 is removed from the catheter 106 such that the support legs 104, defo ⁇ ned when disposed in the catheter 106, will return to their non-deformed condition, as shown in Figure IOC.
  • the protrusions 105 at the second end 1042 of the support legs 104 then attach to the walls of the lumen 102, leaving the sensor 101 positioned at the center of the lumen 102.
  • the center of a lumen 102 is approximately along the length of the lumen 102 in the A direction, equidistant from the walls of the lumen 102.
  • the positioning of the sensor 101 at the center of the lumen 102 prevents tissue from the walls of the lumen 102 from covering any part of the sensor 101 that might prevent accurate measurement. It is well known in the art that blood cells concentrate in the center of a lumen. Furthermore, it is well known in the art that the fastest blood flow in a lumen is at its center. Therefore, physiological conditions and biological parameters measured by the sensor 101 at the center of the lumen 102 represent a more accurate measurement of the overall conditions and parameters of the lumen 102.
  • FIG 10D shows another exemplary anchor 110.
  • the anchor 110 is made of a super-elastic material, such as NiTi, or the like.
  • a sensor frame 103 is provided to hold the sensor 101 in place when it is positioned inside the lumen 102.
  • the sensor frame 103 may be disposed substantially perpendicular to the length of the lumen 102, or substantially parallel to the length of the lumen 102.
  • the anchor 110 has a plurality of first support legs 111 and a plurality of second support legs 114.
  • the first support legs 111 have a first end 112 and a second end 113.
  • the second support legs 114 have a proximal end 115 and a distal end 116.
  • the first support legs 111 are attached to the sensor frame 103 at the first end 112, and have ⁇ rotrusions 105 at the second end 113, where the protrusions 105 may be attached to the second end 113, or an extension of the first support legs 112 themselves, such that the protrusions 105 and first support legs 111 may be integral or made of one piece.
  • the second support legs 114 are attached to the sensor frame 103 at the proximal end 115, and have protrusions 105 at the distal end 116, where the protrusions 105 may be attached to the distal end 114, or an extension of the second support legs 114 themselves, such that the protrusions 105 and the second support legs 114 may be integral or made of one piece.
  • the protrusions 105 may be in the shape of a hook, or the like.
  • the sensor frame 103 is disposed at approximately the center of the anchor 110, along its length.
  • the anchor 110 is disposed in a catheter 106 and then deployed inside the lumen 102.
  • the protrusions 105 attach to the wall of the lumen 102 when removed from the catheter 106, thereby securing the sensor 101 in the center of the lumen 102.
  • a first angle 117, from the length of at least one first support leg to the central axis 119 in the B direction, and a second angle, 118, from the length of at least one second support leg to the central axis 119 in the B direction are measured.
  • the absolute value of the first angle 117 of at least one first support leg 112 will be approximately between 0 degrees and 90 degrees and the absolute value of the second angle 118 of at least one second support leg 114 will be approximately between 90 degrees and 180 degrees.
  • the absolute value of the second angle may no longer be approximately between 90 degrees and 180 degrees, depending upon the shape of the contour. Having support legs at a plurality of angles with respect to the central axis 119 provides better stability for the sensor 101.

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  • Media Introduction/Drainage Providing Device (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

La présente invention concerne un dispositif et un procédé permettant de mettre en place de façon centrale un capteur (101) dans une lumière anatomique (102). Un support de capteur (103) est couplé à une ancre (100, 110) qui est introduite dans une lumière anatomique (102). Cette ancre (100, 110) est ensuite fixée à l'intérieur de la lumière anatomique (102), dans un mode de réalisation de l'invention, par fixation des pieds du support (104, 111, 112, 114) de cette ancre (100, 110) à la lumière anatomique (102). Les pieds du support (104, 111, 112, 114) de cette ancre (100, 110) possèdent des excroissances (105) destinées à être fixées aux parois de la lumière anatomique (102). Le capteur (101) est mis en place au centre de la lumière (102) de façon à mesurer plus précisément les propriétés physiologiques et les paramètres biochimiques de cette lumière (102). Cette ancre (100, 110) peut être introduite pendant une procédure d'intervention ou pendant une procédure d'introduction spéciale. Ce capteur (101) peut être interrogé à distance à l'extérieur de la lumière anatomique (102) de manière périodique ou continue. Par ailleurs, ce capteur (101) peut être fourni avec un revêtement de protection de façon à le protéger d'une détérioration pendant son introduction.
EP02727830A 2002-05-02 2002-05-02 Ancre pour capteur implante dans une lumiere anatomique Withdrawn EP1499234A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2002/001476 WO2003092492A1 (fr) 1998-01-08 2002-05-02 Ancre pour capteur implante dans une lumiere anatomique

Publications (1)

Publication Number Publication Date
EP1499234A1 true EP1499234A1 (fr) 2005-01-26

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EP02727830A Withdrawn EP1499234A1 (fr) 2002-05-02 2002-05-02 Ancre pour capteur implante dans une lumiere anatomique

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EP (1) EP1499234A1 (fr)
JP (1) JP2005519715A (fr)
AU (1) AU2002258023A1 (fr)
CA (1) CA2471652A1 (fr)
IL (1) IL162802A0 (fr)

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JP7104938B2 (ja) * 2018-05-10 2022-07-22 株式会社テクノプロ プローブ刺入デバイスの作成方法、プローブ刺入デバイスの挿入方法、及び電気信号取得方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03092492A1 *

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CA2471652A1 (fr) 2003-11-13
AU2002258023A1 (en) 2003-11-17
JP2005519715A (ja) 2005-07-07
IL162802A0 (en) 2005-11-20

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