JPH10505269A - 超小型圧力センサ及びそれを用いるガイドワイヤ及び方法 - Google Patents
超小型圧力センサ及びそれを用いるガイドワイヤ及び方法Info
- Publication number
- JPH10505269A JPH10505269A JP8509487A JP50948796A JPH10505269A JP H10505269 A JPH10505269 A JP H10505269A JP 8509487 A JP8509487 A JP 8509487A JP 50948796 A JP50948796 A JP 50948796A JP H10505269 A JPH10505269 A JP H10505269A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- guidewire
- housing
- distal end
- diaphragm
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 27
- 239000000463 material Substances 0.000 claims abstract description 44
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- 239000004065 semiconductor Substances 0.000 claims abstract description 20
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 230000013011 mating Effects 0.000 claims abstract description 3
- 208000031481 Pathologic Constriction Diseases 0.000 claims description 53
- 230000036262 stenosis Effects 0.000 claims description 53
- 208000037804 stenosis Diseases 0.000 claims description 53
- 238000009530 blood pressure measurement Methods 0.000 claims description 28
- 238000009792 diffusion process Methods 0.000 claims description 23
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 21
- 239000008280 blood Substances 0.000 claims description 15
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- 238000002399 angioplasty Methods 0.000 claims description 13
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- 230000036772 blood pressure Effects 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 8
- 206010057469 Vascular stenosis Diseases 0.000 claims description 7
- 230000002792 vascular Effects 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
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- 239000012535 impurity Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 206010060965 Arterial stenosis Diseases 0.000 claims description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052753 mercury Inorganic materials 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 description 14
- 239000010935 stainless steel Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
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- 210000004351 coronary vessel Anatomy 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910001260 Pt alloy Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
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- 239000010703 silicon Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000033115 angiogenesis Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 201000000057 Coronary Stenosis Diseases 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
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- 229910052796 boron Inorganic materials 0.000 description 1
- 230000035602 clotting Effects 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000012937 correction Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- ZONODCCBXBRQEZ-UHFFFAOYSA-N platinum tungsten Chemical compound [W].[Pt] ZONODCCBXBRQEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/141—Monolithic housings, e.g. molded or one-piece housings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6851—Guide wires
-
- 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
- A61M25/09—Guide wires
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0061—Electrical connection means
- G01L19/0084—Electrical connection means to the outside of the housing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/147—Details about the mounting of the sensor to support or covering means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/149—Housings of immersion sensor, e.g. where the sensor is immersed in the measuring medium or for in vivo measurements, e.g. by using catheter tips
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
- G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
- G01L9/0052—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of piezoresistive elements
- G01L9/0054—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of piezoresistive elements integral with a semiconducting diaphragm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/06—Measuring blood flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- 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
- A61M2025/0001—Catheters; Hollow probes for pressure measurement
- A61M2025/0002—Catheters; Hollow probes for pressure measurement with a pressure sensor at the distal end
-
- 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
- A61M25/09—Guide wires
- A61M2025/09008—Guide wires having a balloon
-
- 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
- A61M25/09—Guide wires
- A61M2025/09058—Basic structures of guide wires
- A61M2025/09083—Basic structures of guide wires having a coil around a core
-
- 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
- A61M25/10—Balloon catheters
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Cardiology (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Optics & Photonics (AREA)
- Vascular Medicine (AREA)
- Physiology (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring Fluid Pressure (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.脈管中の液体の圧力を測定するための圧力検出能力を有するガイドワイヤで あって、近位端及び遠位端を有しかつ0.457ミリメートル(0.018イン チ)以下の外径を有する可撓性の細長い部材を備え、前記可撓性の細長い部材の 前記遠位端は前記脈管中の液体に配置されるようになっており、前記可撓性の細 長い部材によって支持されかつ前記可撓性の細長い部材の直径と実質的に等しい 直径を有しかつスペースを有するハウジングを備え、前記ハウジングの前記スペ ースに取付けられ、ウェルをもった半導体材料のクリスタルを有しかつ2ミクロ ンから5ミクロンの範囲にわたる厚さを有するダイヤフラムを形成する圧力セン サを備え、前記ダイヤフラムはそれが前記脈管中の液体の圧力変化に高感度な方 法で前記ハウジングに配置され、前記ダイヤフラムは形状が矩形でありかつ前記 ウェルを取り囲むリムによって縁取られかつ半導体材料のクリスタルで形成され 、前記クリスタルに結合されかつ前記半導体材料のクリスタルの前記リムを補強 するのに役立つ絶縁材料で形成された支持プレートを備え、前記支持プレートは 前記ダイヤフラムの下に位置しかつ前記ダイヤフラムと実質的に合っているキャ ビティを有し、前記キャビティは圧力の基準を与えるのに役立ち、前記半導体材 料のクリスタルは不純物で形成された少なくとも1つの拡散領域を有し、前記拡 散領域はたわみを生じる前記ダイヤフラムの部分の上に位置し、それによって、 前記ダイヤフラムへの圧力の付加のとき、抵抗率の変化が前記拡散領域に生じ、 前記半導体材料のクリスタルによって支持されかつ前記少なくとも1つの拡散領 域に接続された導電手段と、前記少なくとも1つの拡散領域に電気エネルギーを 供給するための、前記導体手段に接続された電源と、前記脈管中の液体によって 前記ダイヤフラムに加えられる圧力を確かめるために、前記少なくとも1つの拡 散領域の抵抗率の変化を測定するための手段とを備えることを特徴とするガイド ワイヤ。 2.圧力が前記圧力センサによって検出されている間、前記圧力センサの温度変 化を補償するための、リード線に接続された手段を更に備えることを特徴とする 請求の範囲第1項に記載のガイドワイヤ。 3.前記拡散領域は第1及び第2の拡散部分を有し、前記第1及び第2の拡散部 分は前記ダイヤフラムの間隔を隔てた部分の上に位置しかつ両端を有する第1及 び第2の抵抗体素子として役立つことを特徴とする請求の範囲第1項に記載のガ イドワイヤ。 4.前記半導体材料のクリスタルは第1及び第2の側面を有し、前記ウェルはそ れが前記一方の側面を貫通するように形成され、前記半導体材料のクリスタルの 反対側に通じて前記半導体材料のクリスタルに形成されたトラフを有し、前記導 体手段は前記トラフに固着されたリード線と、前記トラフのリード線と前記第1 及び第2の拡散部分との間の電気接続を確立するための、前記トラフに設けられ た手段とを有することを特徴とする請求の範囲第3項に記載のガイドワイヤ。 5.前記リード線は前記トラフに固着された第1及び第2及び第3のリード線で あり、前記第1リード線は前記第1抵抗体素子の一端に固着され、前記第2リー ド線は前記第2抵抗体素子の一端に固着され、前記第3リード線はコモンリード 線として役立つように前記第1及び第2の抵抗体素子の他端に接続されることを 特徴とする請求の範囲第4項に記載のガイドワイヤ。 6.前記抵抗体素子は2.5キロオームから4.5キロオームの範囲にわたる公 称抵抗を有し、前記第1及び第2の拡散領域は、1ミリアンペア駆動で、公称1 00ミリボルトの出力を生じ、40kPa(水銀柱の300mm)の圧力変化を もたらすことを特徴とする請求の範囲第3項に記載のガイドワイヤ。 7.前記圧力センサを前記ハウジングに固着するための、前記ハウジングによっ て支持された粘着性手段を更に有することを特徴とする請求の範囲第1項に記載 のガイドワイヤ。 8.同時の圧力及び速度の測定を可能にするように、前記ガイドワイヤのエネル ギーに取付けられた速度センサを更に有することを特徴とする請求の範囲第1項 に記載のガイドワイヤ。 9.異なる材料で形成されかつ近位端及び遠位端を有する第1及び第2のコイル ばねを備え、前記第1コイルばねの近位端は前記可撓性の細長い部材の遠位端に 固着され、前記第1コイルばねと前記第2コイルばねとの間に配置された近 位端及び遠位端を有する中間ハウジングを備え、前記中間ハウジングの近位端は 前記第1コイルばねの遠位端に固着され、前記中間ハウジングの遠位端は前記第 2コイルばねの近位端に固着され、前記第2コイルばねの遠位端に取付けられた チップハウジングを備えることを特徴とする請求の範囲第1項に記載のガイドワ イヤ。 10.前記第1に指定したハウジングは前記中間ハウジングであり、前記圧力セン サは前記中間ハウジングに取付けられることを特徴とする請求の範囲第9項に記 載のガイドワイヤ。 11.前記第1に指定したハウジングは前記チップハウジングであり、前記圧力セ ンサは前記チップハウジングに取付けられることを特徴とする請求の範囲第9項 に記載のガイドワイヤ。 12.前記脈管は狭窄症をもった動脈脈管であり、前記ガイドワイヤを狭窄症の中 へ進めた後、動脈脈管の狭窄症の近位端及び遠位端で同時の圧力測定を可能にす るように、圧力センサが前記中間ハウジング及び前記チップハウジングの各々に 取付けられることを特徴とする請求の範囲第9項に記載のガイドワイヤ。 13.前記ガイドワイヤの遠位端に取付けられたバルーンを更に有することを特徴 とする請求の範囲第1項に記載のガイドワイヤ。 14.前記圧力センサを前記ハウジング内に包囲しかつ前記ダイヤフラムの上に位 置した半導体のクリスタルのウェルと連通しているピンホール開口部を有する手 段を更に備えることを特徴とする請求の範囲第1項に記載のガイドワイヤ。 15.前記覆い手段の下に位置し、前記ガイドワイヤの遠位端が出合う前記脈管中 の液体の圧力の前記ピンホールからの流通を確立するのに役立つ粘性流体を更に 有することを特徴とする請求の範囲第14項に記載のガイドワイヤ。 16.狭窄症を有する脈管中の血液の圧力を測定するための圧力検出能力を有する ガイドワイヤであって、近位端及び遠位端を有する可撓性の細長い要素と、前記 可撓性の細長い部材の遠位端に取付けられ、狭窄症の長さより大きい距離間隔を 隔てた第1及び第2のハウジングと、圧力センサを脈管の狭窄症の両側に配置し て、前記ガイドワイヤの遠位端を脈管内に配置したとき、狭窄症の近位及び遠位 で同時の圧力測定を可能にするために、前記ハウジングの各々に取付 けられた圧力センサと、を備えることを特徴とするガイドワイヤ。 17.第1及び第2のコイルを更に備え、前記第2コイルは前記第1コイルと異な る材料で形成され、前記第1ハウジングは前記第1コイルと前記第2コイルとの 間に取付けられ、前記第2ハウジングは前記第2コイルの遠位方向に取付けられ ることを特徴とする請求の範囲第16項に記載のガイドワイヤ。 18.血液を通す脈管の狭窄症の近位及び遠位の圧力を測定するための圧力検出能 力を有するガイドワイヤであって、近位端及び遠位端を有する可撓性の細長い部 材と、前記遠位端に固着された膨張可能なバルーンと、前記バルーンを膨張収縮 させるための、前記可撓性の細長い部材によって支持された手段とを備え、前記 バルーンは遠位端を有し、ハウジングと、前記ハウジングを前記バルーンの遠位 で前記可撓性の細長い部材の遠位端に固着する手段とを備え、前記ハウジングは スペースを有し、前記ハウジングに配置され、前記バルーンから前記可撓性の細 長い部材の近位端まで延びたリード線を有する圧力センサを備え、それによって 、前記バルーンが前記脈管の狭窄症の中に配置されたとき、狭窄症の遠位で血液 の圧力を測定することができることを特徴とするガイドワイヤ。 19.血液を通す脈管の狭窄症の近位及び遠位で圧力を測定するための装置であっ て、0.457ミリメートル(0.018インチ)以下の直径を有しかつ遠位端 を有する可撓性の細長い部材と、前記可撓性の細長い部材の遠位端に固着され、 スペースを有するハウジングと、前記ハウジングに取付けられた圧力センサと、 前記圧力センサに接続されかつ前記可撓性の細長い部材を貫通したリード線とを 備え、前記圧力センサは脈管の血液の圧力と連通して位置決めされ、脈管の血液 の圧力によってたわむようになっている移動可能なダイヤフラムを有し、前記ダ イヤフラムによって支持された第1及び第2の抵抗素子と、前記抵抗素子に接続 されかつ前記可撓性の細長い部材の近位端まで延びるリード線と、電流を前記抵 抗素子に供給するための手段と、前記圧力センサによって測定される圧力を確か めるために、前記ダイヤフラムをたわませるとき、電圧の変化を測定するための 手段とを備えることを特徴とする装置。 20.遠位端を有し、0.457ミリメートル(0.018インチ)以下の直径を 有し、前記遠位端によって支持された圧力検出能力を有するガイドワイヤの使 用によって、血液を通す脈管の狭窄症の近位及び遠位で圧力測定を行う方法であ って、前記ガイドワイヤをガイドワイヤの遠位端が狭窄症の近位にあるように脈 管の中へ進め、、ガイドワイヤの遠位端によって測定される狭窄症の近位の脈管 の血液の圧力を記録し、前記ガイドワイヤを狭窄症の中を進め、狭窄症の遠位の 脈管の血液の他の圧力測定を行い、血管形成処置が狭窄症に適当であるかどうか の決定を行うことを特徴とする方法。 21.狭窄症の近位の血液の圧力と、狭窄症の遠位の血液の圧力とを同時に測定す る段階を更に含むことを特徴とする請求の範囲第20項に記載の方法。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30044594A | 1994-09-02 | 1994-09-02 | |
| US08/300,445 | 1994-09-02 | ||
| PCT/US1995/009898 WO1996007351A1 (en) | 1994-09-02 | 1995-08-04 | Ultra miniature pressure sensor and guidewire using the same and method |
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| Publication Number | Publication Date |
|---|---|
| JPH10505269A true JPH10505269A (ja) | 1998-05-26 |
| JP3619845B2 JP3619845B2 (ja) | 2005-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50948796A Expired - Lifetime JP3619845B2 (ja) | 1994-09-02 | 1995-08-04 | 超小型圧力センサを用いるガイドワイヤ |
Country Status (7)
| Country | Link |
|---|---|
| US (9) | US5715827A (ja) |
| EP (2) | EP0778746B1 (ja) |
| JP (1) | JP3619845B2 (ja) |
| AU (1) | AU3212895A (ja) |
| CA (1) | CA2198909A1 (ja) |
| DE (1) | DE69534748T2 (ja) |
| WO (1) | WO1996007351A1 (ja) |
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| JP2000504249A (ja) * | 1996-01-30 | 2000-04-11 | ラディ・メディカル・システムズ・アクチェボラーグ | 流量、圧力及び温度の複合センサ |
| JP2001517993A (ja) * | 1997-03-25 | 2001-10-09 | ラディ・メディカル・システムズ・アクチェボラーグ | 圧力測定装置 |
| JP2002537885A (ja) * | 1999-03-03 | 2002-11-12 | エンドソニックス・コーポレーション | 一つ又はそれ以上の電気接点を持つ細長い可撓性部材 |
| JP2001286447A (ja) * | 2000-03-21 | 2001-10-16 | Radi Medical Systems Ab | 共振型圧力トランスジューサ・システム |
| US8277386B2 (en) | 2004-09-27 | 2012-10-02 | Volcano Corporation | Combination sensor guidewire and methods of use |
| US8231537B2 (en) | 2004-09-27 | 2012-07-31 | Volcano Corporation | Combination sensor guidewire and methods of use |
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| JP2020513259A (ja) * | 2016-11-28 | 2020-05-14 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 小型センサに対する電気接続 |
| JP2021505214A (ja) * | 2017-12-07 | 2021-02-18 | 上海英諾偉医療器械有限公司 | 圧力ガイドワイヤ |
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Also Published As
| Publication number | Publication date |
|---|---|
| US7967762B2 (en) | 2011-06-28 |
| AU3212895A (en) | 1996-03-27 |
| US8419648B2 (en) | 2013-04-16 |
| EP0778746A1 (en) | 1997-06-18 |
| US20060094982A1 (en) | 2006-05-04 |
| DE69534748D1 (de) | 2006-04-06 |
| US20070135718A1 (en) | 2007-06-14 |
| US20070149885A1 (en) | 2007-06-28 |
| CA2198909A1 (en) | 1996-03-14 |
| US7097620B2 (en) | 2006-08-29 |
| US6767327B1 (en) | 2004-07-27 |
| WO1996007351A1 (en) | 1996-03-14 |
| US20110251497A1 (en) | 2011-10-13 |
| EP0778746A4 (en) | 1997-11-05 |
| US20030018273A1 (en) | 2003-01-23 |
| US8419647B2 (en) | 2013-04-16 |
| US6106476A (en) | 2000-08-22 |
| US20030040674A1 (en) | 2003-02-27 |
| JP3619845B2 (ja) | 2005-02-16 |
| DE69534748T2 (de) | 2006-11-02 |
| EP0778746B1 (en) | 2006-01-11 |
| EP1658808A1 (en) | 2006-05-24 |
| US5715827A (en) | 1998-02-10 |
| US6976965B2 (en) | 2005-12-20 |
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