WO2004050156A1 - Catheter - Google Patents
Catheter Download PDFInfo
- Publication number
- WO2004050156A1 WO2004050156A1 PCT/IB2003/005359 IB0305359W WO2004050156A1 WO 2004050156 A1 WO2004050156 A1 WO 2004050156A1 IB 0305359 W IB0305359 W IB 0305359W WO 2004050156 A1 WO2004050156 A1 WO 2004050156A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- basic element
- catheter
- guide wire
- catheter arrangement
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/062—Measuring instruments not otherwise provided for penetration depth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M2025/0004—Catheters; Hollow probes having two or more concentrically arranged tubes for forming a concentric catheter system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M2025/0166—Sensors, electrodes or the like for guiding the catheter to a target zone, e.g. image guided or magnetically guided
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
- A61M2025/0681—Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
Definitions
- the invention relates to a catheter arrangement comprising at least two basic elements.
- Catheters which are used in medical technology for diagnostic or surgical processes, have at least two basic elements: a catheter sleeve and an instrument catheter, which is moved within the catheter sleeve after placing it in the catheter sleeve, so that the instrument which the instrument catheter typically has on its tip is pushed into the desired place inside the patient and is then located is outside the catheter sleeve.
- a catheter as is used, for example, in intercoronary arterial operation, mainly comprises three basic elements, namely a catheter sleeve, which has a relatively large diameter (about 2-3 mm), a guide wire with a relatively small diameter (about 0.25 mm) and an internal catheter, which can be moved inside the catheter sleeve over the guide wire.
- Catheter arrangements with two or three basic elements are also known in other applications, such as for minimum invasive interventions or in endoscopic examinations. The size ratios differ from those for intercoronary arterial applications, according to the application.
- the catheter sleeve In an intercoronary arterial operation, the catheter sleeve is introduced in an artery in the groin or the shoulder of the patient and is pushed up to the heart as far as the ostium. The catheter sleeve cannot be pushed any further in this application due to its large diameter.
- the guide wire typically with an elastic head, is moved further into the coronary arteries, till the guide wire tip has been moved ahead behind the arterial region to be treated (for example an arterial constriction).
- the positioning is done with the help of X-ray fluoroscopy sequences with a contrast medium, to make the coronary artery free and the anomaly to be treated (for example a constriction) appear in the fluoroscopy images., Besides the contrast medium injection also X-rays for positioning are made. Both are burdensome to the patient.
- an internal catheter is moved over the guide wire. It typically bears an instrument on its tip, about an inflatable balloon, by means of which the coronary artery constriction can be expanded.
- the internal catheter is pulled out again and a second internal catheter is introduced, which has what is called a stent, which is a thin wire mesh, used for stabilizing the expanded portion of the arterial area.
- the stent must then come to be at the same location, at which also the artery was expanded. This is again done typically with the help of fluoroscopy recorded images.
- a catheter arrangement which comprises at least a first basic element and a second basic element, which is movably arranged over at least a part of its length within the first basic element, and which catheter arrangement has a sensor unit provided for generating at least a sensor value which is assigned to a measurable property of the catheter arrangement, for determining a position and/or a position shift of the first basic element and the second basic element to each other.
- the advantage of the invention as claimed in Claim 1 is that it renders possible the determination of the position or the mutual position shift of two basic elements, say, the position of the inner catheter relative to the guide wire or to the catheter sleeve. A position reached once can thus be easily reached again without needing the burdensome X-rays. This takes place by comparing two position shifts or positions. If the first instrument (for example the balloon) has been placed, then either the shift is measured or the position at the location of use of the instrument is measured when the instrument catheter is pulled out. If a second instrument catheter, with its instrument (for example the stent) is pushed in again, the same position shift can be made in another direction or the shifting is done till the same position is measured again. The sensor unit used for measuring then measures a measurable property.
- the measurable property can be regular markings, which can be measured electromagnetically, mechanically or optically, magnetically recorded information or only the property of the guide wire, having a certain resistance in a power circuit from one end up to the position of the sensor, which resistance can be assigned to a position.
- it allows to determine a position by means of a sensor value or to determine a position shift by means of two or more sensor values (this includes a continuous reading of the sensor values).
- Claim 2 shows a particularly advantageous embodiment. Using a sensor, which is located on one of the basic elements, a measurable property shown by another basic element can be measured and the sensor values can be converted into a position value or a position shift value.
- a special embodiment of the measurable property is a structuring.
- a structuring can be a mechanical, electromagnetic or optical property.
- Another advantageous embodiment of the invention is provided if the structure of the structured basic elements can be measured without touching them, because contact always entails wear and tear and mechanical resistance, which can be avoided by contactless measuring.
- Another advantageous embodiment of the invention is provided if the structuring of the structured basic elements varies in the longitudinal direction, as described in claim 5. This, for example, indicates having a uniform structure, which allows a position shift determination by simple counting off of the measured rings.
- the invention can have a particularly advantageous embodiment if there are two sensors, which measure the regular structuring. Because if the distance between the two sensors is smaller than the width of the structuring; the direction of movement can be determined and multiple pulling forward or backward in the positioning operation can be taken into account.
- the regular structurings are structurings of the electromagnetic properties, as described in claim 6, then it is mostly easy to realize the sensor, for example, as a simple contact or as a capacitance measuring sensor. If the electromagnetic property is the connectivity, the structuring can also be realized easily, say, by simple insulation.
- the sensor unit has a sensor evaluation unit, which can convert the sensor values of the first sensor into position values or into position shift values.
- a typical embodiment of the catheter arrangement has a basic element that is elongated and hollow, so that it is easy to achieve a shift capability for a second basic element in the first basic element.
- the invention further relates to a method for determining the position and/or a position shift of a first basic element and a second basic element of a catheter arrangement, in which method the second basic element is arranged so that it can be moved over at least a portion of its length in the first basic element, in which a sensor unit generates at least a sensor value which is assigned to a measurable property of the catheter arrangement.
- Fig. 1 schematically shows a catheter arrangement comprising the three basic elements that can be moved into each other.
- Figure 2 schematically shows a structuring of the guide wire, where the guide wire is also linked to a supply unit,
- Figure 3 shows the inner catheter, which can be shifted in longitudinal direction relative to the guide wire and has two sensors in contact with the guide wire which are connected to a sensor evaluation unit
- Figure 4 shows an inner catheter and a structured guide wire, where the inner catheter has two sensors which measure the structuring of the guide wire without contact
- Figure 5 shows a side detail of a structured guide wire, that has three structural elements and two ring electrodes that are arranged on the inner catheter, which is not drawn, and Figure 6 shows a cross-section through the structured guide wire and a ring electrode with three contact points.
- a catheter arrangement comprising the basic elements, catheter sleeve, inner catheter and guide wire, is used for intercoronary arterial applications in the blood - filled arteries of a patient. It will be depicted below, how such a catheter arrangement can be arranged to make it possible to determine a position value or a position shift value, resulting in less burden on the patient, if a position has to be reached more than once.
- the catheter arrangement need not, however, be restricted to three basic elements, because the invented embodiment also functions with two or more than three basic elements.
- Fig. 1 schematically shows the three basic elements of a catheter arrangement for intercoronary arterial applications.
- the catheter sleeve 1 is the outermost of the three basic elements.
- the guide wire 3 is the innermost of the three basi elements.
- the three basic elements often have different lengths (e.g. the guide wire 3 is typically designed longer than the catheter sleeve 1).
- the three basic elements are arranged to be capable of moving essentially independently of each other.
- Fig. 2 schematically shows a structuring of the guide wire 3.
- Structurings 3' are provided on the guide wire 3 or incorporated with it.
- Another embodiment is the measurable property of the Ohmic resistance between a fixed contact point and the point defined by a shiftable contact.
- the guide wire 3 is connected to a supply unit 4, which makes it possible to maintain the guide wire 3 continuously at a voltage potential or to supply it with energy (e.g. in the form of current) or light.
- Fig. 3 shows the structured guide wire 3 with the inner catheter 2 (cut away for clarity).
- sensors 5 On the inner catheter 2 in this embodiment, there are sensors 5 which measure the structuring 3' of the guide wire 3 by contacting and thereby make it possible to determine the mutual position shift of inner catheter 2 and guide wire 3.
- Fig. 3 further shows a sensor evaluation unit 6, which records the sensor values of the sensors 5 and on the basis of these sensor values, and possible other fixed parameters, determines the position and/or position shift of the two basic elements with respect to each other.
- the sensors 5 are contacted by means of supply wires 8.
- supply wires 8 In the sensor evaluation unit 6 also voltage sources, if required, and similar supply sources should be integrated in such a manner that no additional supply unit 4 is needed.
- the guide wire 3 is arranged such that it transmits light on the structures 3', the structures can be measured by means of an optically sensitive sensor, such as a photo diode for example.
- the guide wire 3 itself can radiate in that it is made from a lucent material or a material that can be excited to luminescence.
- the guide wire may also be a light conductor, however, where light is coupled out at the structures 3'.
- the guide wire 3 comprises an optically transparent material, to which a phosphorescent material has been added, the guide wire can be excited to luminescence by prior exposure to light.
- a structuring can be realized by optically opaque covers.
- the output signal of the photo diode would increase each time it begins to travel over a lighting structure. The output signal will then drop again as the photo diode is slid over an optically opaque cover.
- the guide wire 3 is obtained if the guide wire consists of a material whose electrical conductivity is considerably higher than that of blood (this becomes necessary, because the catheter is at least partly filled with blood in intercoronary arterial applications).
- the guide wire can be made of metal or some other conductive material or mixture of materials, such as a conductive plastic or a plastic metal mixture.
- the guide wire is given an insulating coating, which is removed or not deposited respectively at places for realizing the structures 3'.
- the inner catheter 2 has at least a (ring-shaped) electrode, which is contacted by means of a flexible supply wire 8.
- the supply wire 8 is incorporated in the inner catheter 2, which can be realized, for example, during the manufacturing process of the inner catheter 2 by extrusion, or it is just glued onto it.
- the supply wire 8 can be contacted at the other end of the inner catheter 2 (therefore typically outside the patient). It is linked to the sensor evaluation unit 6 in the embodiment depicted here.
- the electrode is designed in such a manner that it slides over the guide wire when the inner catheter is moved forward and backward and comes into contact with the non- insulated tips. This can be realized, for example, by means of resilient contacts or through brush contacts. The contacting need not take place on the entire periphery.
- the structurings 3' with a width D3 are arranged on the guide wire 3. These structurings 3' are points without insulation of the conductive material from which the guide wire is manufactured.
- Fig. 5 shows a side view of the structured guide wire 3 with two ring electrodes 5. The inner catheter 2, on which the ring electrodes 5 are provided and the supply wires 8 of the electrodes are not shown here for the sake of simplicity.
- Fig. 6 shows a cross section through the guide wire with a ring electrode and the contact points 5' arranged on it.
- the two ring electrodes 5 have three contact points 5' each made of resiliently arranged warpings of electrode material, arranged on the periphery of the ring electrodes 5.
- the respective double arrows show an elasticity of the contact points 5' in the radial direction, such that the contact points follow the changing radii of the guide wire at the insulated (radius Rl) and the non-insulated points (shown by the dashed periphery of the guide wire 3 in Fig. 6; at these points the guide wire 3 has the smaller radius R2), without losing contact to the surface of the guide wire.
- the contact points 5' are mutually offset by 120°, so that contact to the guide wire 3 is always ensured.
- Contact points 5' which can adapt to a changing diameter, can also be made as brush contacts.
- the two ring electrodes 5 are arranged at a center-to-center distance D2 on the inner catheter 2, not shown, and contacted by means of supply wires.
- the length of the insulated points on the guide wire 3 is DI.
- DI and D3 are selected in the version described here, so that they are always larger than the center-to-center distance D2 between the ring electrodes. The result of this is that there is always a position on an insulated or on a non-insulated structure where both electrodes 5 either have contact with the guide wire 3 or no contact.
- both ring electrodes 5 have no contact to one of the structurings 3' and therefore a high resistance is measured on both ring electrodes. If the inner catheter 2 is moved on the guide wire 3 in the direction of the arrow V, then the electrode arranged forward seen in shift direction V first comes into contact with the non-insulated structuring and then the electrode arranged at the back seen in shift direction V comes into contact so that a low resistance to the guide wire 3 is measured in the dashed shifting position of the ring electrodes for both electrodes. If the move continues in the direction of shift V, then the electrode arranged in front loses contact first and then the electrode arranged at the back in the direction of shift loses contact.
- the sensor evaluation unit 6 then simply counts the structurings 3' traveled past and a value corresponding to it (e.g. the actual shift distance which can be computed by means of the fixed given values of D3 and DI) can be displayed to the user of the catheter arrangement, for example, on a display on the sensor evaluation unit 6.
- a value corresponding to it e.g. the actual shift distance which can be computed by means of the fixed given values of D3 and DI
- the special arrangement of the ring electrodes and structurings in this version makes it possible for the sensor evaluation unit 6 to recognize whether the direction of shift is changed during the shift. If, for example, the direction of shift is changed when both electrodes have no contact, then the next contact is measured on the electrode being at the back in the former direction of shift, which can be recognized by the sensor evaluation unit 6.
- the electrode being at the back in the former direction of shift loses contact first, if the direction of shift is changed, while both electrodes have contact. If the direction of shift is changed while only one electrode has contact, this also leads to a recognizable deviation from the behavior as has been described for a constant direction of shift.
- the precision of positioning achieved depends on the selected distances DI, D2 and D3. For intercoronary arterial applications, a position determination of about one millimeter is sufficient and DI could be one millimeter, D3 half a millimeter and D2 one third millimeter. According to the requirements and technical boundary conditions, other values could also be selected.
- the determination of the position or position shift can become more accurate by assessment of the sensor value (both electrodes have contact, only one electrode has contact, both electrodes have no contact) than by just counting the structures passed. If DI and D3 are known, then the shift distance during counting can be indicated in units of DI + D3. If the contact signals are evaluated, then on loss of contact for both electrodes, an intermediate value of about (Dl+D3)/2, can be added to the shift path. The inaccuracy of this information depends on the distance values selected. If it is required that the inner catheter 2 is to be moved without changing the direction of shift, then an embodiment with only one electrode 5 is of advantage, because then only the number of structured points 3' needs to be counted to achieve the determination of a position shift.
- Such a version is simpler and more cost-effective to make from the point of view of manufacturing technology. If the direction of shift changes, this can be communicated to the sensor evaluation unit 6, for example, manually, by pushing a button. Subsequently, the change in the shift distance is counted in the other direction on the basis of the counted structurings 3'.
- the ring electrodes 5 are embodied without the contacting points 5'. Without a direct or conductive contact between ring electrodes 5 and structurings 3' the structurings passed can be measured capacitively.
- the voltage supply is not DC voltage but provided by a high-frequency source.
- embodiments with inductive measurement can be made, where the ring electrodes 5 are replaced by coils, which have two supplies each. Accordingly, the structurings 3' are to be executed as coils on the guide wire 3.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/536,062 US20060173381A1 (en) | 2002-11-30 | 2003-11-24 | Catheter |
AU2003283626A AU2003283626A1 (en) | 2002-11-30 | 2003-11-24 | Catheter |
JP2004556623A JP2006507884A (en) | 2002-11-30 | 2003-11-24 | catheter |
EP03775607A EP1572278A1 (en) | 2002-11-30 | 2003-11-24 | Catheter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10256007.2 | 2002-11-30 | ||
DE10256007A DE10256007A1 (en) | 2002-11-30 | 2002-11-30 | A catheter assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004050156A1 true WO2004050156A1 (en) | 2004-06-17 |
WO2004050156A8 WO2004050156A8 (en) | 2005-07-14 |
Family
ID=32308879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2003/005359 WO2004050156A1 (en) | 2002-11-30 | 2003-11-24 | Catheter |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060173381A1 (en) |
EP (1) | EP1572278A1 (en) |
JP (1) | JP2006507884A (en) |
CN (1) | CN1717262A (en) |
AU (1) | AU2003283626A1 (en) |
DE (1) | DE10256007A1 (en) |
WO (1) | WO2004050156A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006032583A1 (en) * | 2006-07-13 | 2008-01-17 | Biotronik Crm Patent Ag | introducer |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110260945A1 (en) * | 2007-08-03 | 2011-10-27 | Fumio Karasawa | Coating Composition and Article Using the Same |
US20090112215A1 (en) * | 2007-10-29 | 2009-04-30 | Sherman Jason T | Opto-electric indicators for orthopaedic instruments |
US8532734B2 (en) | 2008-04-18 | 2013-09-10 | Regents Of The University Of Minnesota | Method and apparatus for mapping a structure |
US8839798B2 (en) | 2008-04-18 | 2014-09-23 | Medtronic, Inc. | System and method for determining sheath location |
US8663120B2 (en) | 2008-04-18 | 2014-03-04 | Regents Of The University Of Minnesota | Method and apparatus for mapping a structure |
US8494608B2 (en) | 2008-04-18 | 2013-07-23 | Medtronic, Inc. | Method and apparatus for mapping a structure |
US8457371B2 (en) | 2008-04-18 | 2013-06-04 | Regents Of The University Of Minnesota | Method and apparatus for mapping a structure |
US8175681B2 (en) | 2008-12-16 | 2012-05-08 | Medtronic Navigation Inc. | Combination of electromagnetic and electropotential localization |
US8494613B2 (en) | 2009-08-31 | 2013-07-23 | Medtronic, Inc. | Combination localization system |
US8494614B2 (en) | 2009-08-31 | 2013-07-23 | Regents Of The University Of Minnesota | Combination localization system |
US8355774B2 (en) | 2009-10-30 | 2013-01-15 | Medtronic, Inc. | System and method to evaluate electrode position and spacing |
CN102802492B (en) | 2010-03-16 | 2015-02-11 | 泰尔茂株式会社 | Guide wire and catheter assembly |
EP2825089A1 (en) * | 2012-03-15 | 2015-01-21 | Flip Technologies Limited | A balloon catheter and a system and a method for determining the distance of a site in a human or animal body from a datum location |
US10085808B2 (en) * | 2015-12-31 | 2018-10-02 | Biosense Webster (Israel) Ltd. | Adjustable tracking sensor suitable for different rigid tools |
DE102017004548A1 (en) | 2016-12-23 | 2018-06-28 | Xenios Ag | Cannula with a wire running along the cannula |
CN108325047B (en) * | 2018-03-26 | 2020-09-08 | 青岛市中心医院 | External guide cardiac catheter device |
CN112603537A (en) * | 2020-12-10 | 2021-04-06 | 昆山雷盛医疗科技有限公司 | Interventional instrument interventional depth detection system and movement detection device |
US20220249173A1 (en) * | 2021-02-09 | 2022-08-11 | Channel Medsystems, Inc. | Cryogenic treatment device encoder |
WO2023173108A1 (en) * | 2022-03-11 | 2023-09-14 | Frond Medical Inc. | Devices and methods for endoluminal position detection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4118773A1 (en) * | 1990-06-08 | 1991-12-12 | Sony Magnescale Inc | Position detector for magnetised scale or similar - has sensor contg. several magnetic sensor elements, each with magnetic resistance elements in series |
GB2314158A (en) * | 1996-06-11 | 1997-12-17 | Roke Manor Research | Catheter tracking system and method |
US5955882A (en) * | 1993-11-17 | 1999-09-21 | Amo Gmbh | Magnetic position measuring device using a plurality of sensors and a scale |
GB2355797A (en) * | 1999-10-26 | 2001-05-02 | Anthony James Ivor Scriven | A guidewire having measurement markings |
EP1181895A2 (en) * | 2000-08-14 | 2002-02-27 | Vnus Medical Technologies, Inc. | Method and apparatus for positioning a catheter relative to an anatomical junction |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5059183A (en) * | 1989-09-01 | 1991-10-22 | Neal Semrad | Stop guide wire and double ended obturator-catheter-sheath system and method of use of same |
US7033325B1 (en) * | 1989-12-19 | 2006-04-25 | Scimed Life Systems, Inc. | Guidewire with multiple radiopaque marker sections |
US5570701A (en) * | 1992-08-12 | 1996-11-05 | Scimed Life Systems, Inc. | Shaft movement control apparatus and method |
US5375596A (en) * | 1992-09-29 | 1994-12-27 | Hdc Corporation | Method and apparatus for determining the position of catheters, tubes, placement guidewires and implantable ports within biological tissue |
US6398782B1 (en) * | 1992-10-13 | 2002-06-04 | Edwards Lifesciences Corporation | Bipolar vascular sealing apparatus and methods |
EP0723786A1 (en) * | 1995-01-30 | 1996-07-31 | Cardiovascular Concepts, Inc. | Lesion measurement catheter and method |
US6428512B1 (en) * | 2000-10-10 | 2002-08-06 | Advanced Cardiovascular Systems, Inc. | Guidewire with improved lesion measurement |
-
2002
- 2002-11-30 DE DE10256007A patent/DE10256007A1/en not_active Withdrawn
-
2003
- 2003-11-24 CN CNA2003801045141A patent/CN1717262A/en active Pending
- 2003-11-24 WO PCT/IB2003/005359 patent/WO2004050156A1/en not_active Application Discontinuation
- 2003-11-24 AU AU2003283626A patent/AU2003283626A1/en not_active Abandoned
- 2003-11-24 US US10/536,062 patent/US20060173381A1/en not_active Abandoned
- 2003-11-24 EP EP03775607A patent/EP1572278A1/en not_active Withdrawn
- 2003-11-24 JP JP2004556623A patent/JP2006507884A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4118773A1 (en) * | 1990-06-08 | 1991-12-12 | Sony Magnescale Inc | Position detector for magnetised scale or similar - has sensor contg. several magnetic sensor elements, each with magnetic resistance elements in series |
US5955882A (en) * | 1993-11-17 | 1999-09-21 | Amo Gmbh | Magnetic position measuring device using a plurality of sensors and a scale |
GB2314158A (en) * | 1996-06-11 | 1997-12-17 | Roke Manor Research | Catheter tracking system and method |
GB2355797A (en) * | 1999-10-26 | 2001-05-02 | Anthony James Ivor Scriven | A guidewire having measurement markings |
EP1181895A2 (en) * | 2000-08-14 | 2002-02-27 | Vnus Medical Technologies, Inc. | Method and apparatus for positioning a catheter relative to an anatomical junction |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006032583A1 (en) * | 2006-07-13 | 2008-01-17 | Biotronik Crm Patent Ag | introducer |
US7787963B2 (en) | 2006-07-13 | 2010-08-31 | Biotronik Crm Patent Ag | Device for insertion of electrode lines or other medical instruments into a body |
Also Published As
Publication number | Publication date |
---|---|
CN1717262A (en) | 2006-01-04 |
EP1572278A1 (en) | 2005-09-14 |
DE10256007A1 (en) | 2004-06-09 |
AU2003283626A1 (en) | 2004-06-23 |
US20060173381A1 (en) | 2006-08-03 |
JP2006507884A (en) | 2006-03-09 |
WO2004050156A8 (en) | 2005-07-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060173381A1 (en) | Catheter | |
US20170027453A1 (en) | Method for detection of blood pressure using pressure sensing guide wire | |
US10869633B2 (en) | Pressure-sensing guide wire with sliding pressure sensor | |
US8282599B2 (en) | Therapeutic catheter with displacement sensing transducer | |
JP5117045B2 (en) | System and method for selectively supplying energy to a catheter electrode | |
CN105813553B (en) | Devices, systems, and methods for assessing intravascular pressure | |
US20040176683A1 (en) | Method and apparatus for tracking insertion depth | |
US11006840B2 (en) | Device, system, and method for assessing intravascular pressure | |
US20160022154A1 (en) | System including guidewire for detecting fluid pressure | |
JP6920419B2 (en) | Monitoring system and oxygen measurement system | |
JP2016150255A (en) | Angioplasty guidewire | |
CN107223034A (en) | Sensing is contacted using the tissue of Medical Devices | |
WO1993007926A1 (en) | Linear eversion catheter system with extension control | |
CN103945757A (en) | Systems and methods for a wireless vascular pressure measurement device | |
WO2014105594A1 (en) | Capacitive intravascular pressure-sensing devices and associated systems and methods | |
US20050148903A1 (en) | Catheter | |
JP2007504879A (en) | Tracking of catheter tip for interventional procedures monitored by magnetic resonance imaging | |
JPWO2007007560A1 (en) | catheter | |
US9383421B2 (en) | Intra-body medical devices for use in MRI environments | |
WO2023172652A1 (en) | Medical sensing devices and systems | |
WO2023177889A1 (en) | Fiber optic medical systems and devices with atraumatic tip | |
US20130274619A1 (en) | Systems and methods for a low-profile vascular pressure measurement device | |
WO2014168737A1 (en) | Low-profile vascular pressure measurement device | |
WO2022238274A1 (en) | Automatic measurement of body lumen length between bookmarked intraluminal data based on coregistration of intraluminal data to extraluminal image | |
JP2000300508A (en) | Measuring device for endoscope |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003775607 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2006173381 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10536062 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004556623 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038A45141 Country of ref document: CN |
|
CFP | Corrected version of a pamphlet front page | ||
CR1 | Correction of entry in section i |
Free format text: IN PCT GAZETTE 25/2004 UNDER (71) REPLACE THE EXISTING TEXT BY "(FOR ALL DESIGNATED STATES EXCEPT DE AND US): KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL/NL]; GROENEWOUDSEWEG 1, NL-5621 BA EINDHOVEN (NL)" |
|
WWP | Wipo information: published in national office |
Ref document number: 2003775607 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10536062 Country of ref document: US |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2003775607 Country of ref document: EP |