TW531406B - An intravascular photo-sonic sensor device - Google Patents

Abstract

A new intravascular photo-sonic sensor device is disclosed. The photo-sonic sensor device includes at least ultrasonic array sensors and a laser Doppler photo detector for detecting angiography and blood flow. The ultrasonic array sensors include a plurality of sensor units, a plurality of matching units, an absorptive unit, and a plurality of signal lines. The sensor units are used for receiving ultrasonic signal. In addition, the matching units are set on the sensor units. Furthermore, the absorptive unit is built in the sensor units and the signal lines locating in the absorptive unit are used for transmitting and detecting signals received by the sensor units received.

Description

531406 V. Description of the invention (l)-[Field of the invention] The present invention relates to an intrusive photoacoustic sensing device, especially a miniature photoacoustic sensing device suitable for cardiovascular applications in cardiac catheterization. [Background of the present invention] According to 'When performing cardiac catheter surgery such as coronary arterial hypertrophy, the physician must have physiological information such as the blood flow value in the golden canal. The traditional method is to use invasive (Intravascular Ultrasound can only scan the vascular wall tissue section and The inability to perform the above two functions simultaneously cannot obtain sufficient information in real time, even the catheter, causing the patient's pain and increasing the blood flow velocity of the tube using another Doppler blood floow meter. There is no cross-sectional image of the existing vascular tissue at the deeper part where the laser light cannot penetrate. In this regard, the inventor Mai Yin, this in order to solve the above-mentioned problems, "the invasive optical test is finally completed to the benefit of the world's hair, arterial vascular embolism, balloon dilation to obtain jk tube wall tissue cross-section images and to facilitate surgery Catheter ultrasound system (IVUS), its functional image or separate measurement of blood flow velocity, can enable physicians to frequently replace the failure rate of different functions during the operation. Pooler blood flow measurement system (Laser's method is to measure micro blood vessels on the surface of the body and tissues around the heart in vitro, and this method can not show the spirit of the invention. It is an urgent need to consider an acoustic sensing device. "

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[Outline of the invention]

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V. Description of the invention (2) The main purpose of the present invention is to provide an invasive photoacoustic sensing device, which can simultaneously acquire physiological information such as cross-sectional images of blood vessel wall tissues and intravascular blood flow values without the need for repeated replacements. Functional conduit. Another object of the present invention is to provide an intrusive photoacoustic sensing device, which can determine the position of a blood vessel embolism by a change in blood flow value, thereby indirectly reducing the amount of X-rays for positioning. In order to achieve the above-mentioned object, the present invention is inserted inside a blood vessel and cooperates with an external ultrasonic source and a laser light signal source. The present invention mainly includes a plurality of sensing units for transmitting and receiving ultrasonic signals; The matching unit is 'fixed on the periphery of the pole sensing early element' to match the impedance gap between the complex sensing unit and the human body; an absorption unit whose interior is hollow and fixed on the inner periphery of the complex sensing unit; The complex signal line group is a sensing signal generated by transmitting and receiving ultrasonic signals from the complex sensing unit. The complex signal line group is arranged in the absorption unit; and an optical signal sensing unit is located inside the absorption unit. The optical signal sensing device includes a plurality of optical fibers; wherein the laser light source is sent into a blood vessel through at least one optical fiber as an optical fiber for transmitting optical signals, and the other multiple optical fibers are used as optical fibers for receiving optical signals to receive light reflected by body fluids. The signal, ultrasonic sensing device and optical signal sensing device control the order of ultrasonic and optical signals and reception by a timing control method. Since the present invention has a novel structure, can provide industrial use, and does have an increasing effect, it applies for an invention patent in accordance with the law. 531406 V. Description of the invention (3) [Detailed description of the specific embodiment of Che Fujia] The preferred embodiment of the present invention is a cup χ / ^ ^ * Please ^ according to the three-dimensional exploded view shown in Figure 1, which Main V 2 plus 3, absorption unit "conduit 5, signal line 6 2 ί 7 fiber is better =: early: 1 2 materials / unlimited" in this embodiment with sound 3 =: f distribution unit 3 material unlimited, It is preferably-species ^ ^ M ^; 4 materials with acoustic impedance materials whose acoustic impedance value is low in the human body's acoustic attenuation coefficient. The second resistance is 'between' and has ultrasonic technology Gr, σ ,,,, and wood Use of Guangxi Ke company's deco as the composition of epoxy resin and iif: cut) and other polymer materials JJ = Shuyue Yue (Ep〇xy ms-25 absorption unit 4 Xi Congzhe, fc-emulsified aluminum and Mixture of powders such as tungsten oxide. There is no limit to the material of the early harvest 4. In this implementation, it is made up of Ξδ 尖尖 材 γ ^ powder " material. The package 2 is a characteristic. The material Λ of the package 7 has a low reduction coefficient and With biocompatible materials, the best κ ammonia vinegar material ^ absorption ΐ mid-peripheral supersonic ^ skin / test unit 1 is eight: and embedded in 4 rooms Eight mt and eight ultrasonic sensing units 701 are connected to the absorption unit 6 and shared with each ultrasonic sensing unit 1 Page 7 531406 5. Description of the invention (4) For transmitting each ultrasonic sensing unit 1 The signals from the receiving and receiving ultrasonic signals are transmitted to the external display device. Eight ultrasonic sensors Γ: Li Λ Do not glue eight matching units 3 with resin to form eight Γ 奂 energy modules' and change energy in the ultrasonic array Module Peripheral Group 1: Empty catheter 5 and encapsulated at the tip of catheter 5-transparent ΓίΓ, 俾 for emission and # 收 超 | 波 Signal to take a page to take a cross-section image of the cardiovascular wall tissue. t ί The impedance is quite different from the impedance of the ultrasonic sensing unit 1. In this way, the matching unit 3 is fixed to reduce the impedance of the ultrasonic sensing unit, and the external ultrasonic signal can be transmitted smoothly to the ultrasonic sensing unit. The number of 1 is unlimited in this book.] Eight ultrasonic sensing units 1 are used as an illustration. Absorption early 4 is an internal circular circle = wave 2 after transmitting and receiving ultrasonic signals = = vibration generated. After absorbing a single Hi to receive the ultrasonic signal, the unit 2 has a The optical signal sensing system is connected to the external laser light source as the trunk part. It is two optical two 21, the optical frontal tube; the optical signal sensing unit 2 is more focused / contained and then enters the blood chamber to reflect back. The 21 optical fibers of the light signal are received by the external display device of the body fluids in the blood vessel to display the flow rate of the eight light sources connected to the blood flow of ^ g N. Figure 3 shows the connection to the blood flow of the present invention. "Schematic diagram showing four ultrasonic sensors and single-sequence control method, ti as early as 1 timing of transmission and reception, 15 tables

Page 8 531406-Description of the invention (5) Shows that the optical fiber 21 transmits the optical fiber signal to the root fiber in the blood vessel and is received by the blood vessel 序, and t6 indicates the timing of the optical signal returned by each motion in the remaining eight. After it is sent out: the timing is about 20 microseconds, and every second ultrasonic sensing unit 1 touches 5 microseconds. The whole working cycle is about 15. Microseconds. Control each ultrasonic sensing unit 1 and the conducting fiber to stay 5 μs large Λ / cap and pre-tilt the vibration attenuation effect of the two-lead ultrasonic sensing unit 1 after triggering of each ultrasonic sensing unit 1, so that: V The first fiber 21 is not disturbed by the scattered noise generated by the oscillation. It can be seen from the above description that the present invention integrates the laser light source sensor of the ultrasonic array sub-measurement gamma cryppler system into one; blood estimation = to obtain the cross-sectional image of the blood vessel wall tissue and the blood vessel at the same time. And Γ and other physiological information, without the need to repeatedly exchange catheters with different functions. In addition, Benmemin can determine the vascular plate pods by indirectly reducing the amount of X-ray irradiation for positioning by changing the blood flow value. i 'In summary, the present invention, regardless of its purpose, means and efficacy, shows its characteristics that are quite different from the conventional technology. 1 A major breakthrough in the "cardiac catheter light sentence placement", sincerely urges the inspection committee members to make a clear observation and give it soon. Precise = profit, good for the society, really feel virtuous. It should be noted that each of the above embodiments is merely an example for the convenience of explanation. The two ranges claimed in the present invention should be $ as described in the patent scope, and not limited to the above.

Page 9 531406 Brief description of the drawings [Simplified description of the drawings] Figure 1 is an exploded perspective view of the present invention. Figure 2 is a schematic diagram of the present invention. Figure 3 is the timing control diagram of the transmission and reception of ultrasonic and optical signals according to the present invention. 0 [Illustration of the drawing number] Ultrasonic sensing unit 1 Optical fiber 21 Absorption unit 4 Signal line 6 Optical signal sensing unit 2 Matching unit 3 Conduit 5 Package 7

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Claims (1)

531406 6. Scope of patent application 1. An intrusive photoacoustic sensing device is inserted inside a blood vessel and cooperates with a laser light signal source. The photoacoustic sensing device mainly includes: a plurality of sensing units for transmitting and Receiving ultrasonic signals; the complex matching unit is fixedly arranged on the periphery of the complex sensing unit to match the impedance gap between the complex sensing unit and the human body; an absorption unit is fixedly arranged on the inner periphery of the complex sensing unit To absorb the scattered noise generated by the complex sensing unit, which is hollow inside; the complex signal line group is used to transmit the sensing signal generated by the complex sensing unit transmitting and receiving the ultrasonic signal, the complex number The signal line group is set up in the absorption unit; and an optical signal sensing device, in which the thunder optical fiber is used to send the optical fiber to connect with the optical signal and the optical signal is transmitted. The tube photoacoustic sensing system is sleeved on the package. No. sensing includes re-transmitting optical signals to the blood receiver, body sensing, loading and receiving patented optical signals, patented devices, and multiple-number sensing units. The number of optical fiber signal sources passes through the tube. The first range includes a measurement unit located inside the absorption unit. The optical signal uses at least one optical fiber as the transmitting optical signal and other plural optical fibers as the receiving optical signal. The ultrasonic sensing device timing control method controls the ultrasonic signal. The sound wave source and the photoacoustic sensing device described in the above item 0, wherein the number of optical fibers is three to eight. Item 1. The photoacoustic sensing device described above, the blood tube and a package body; the periphery of one end of the tube 'is installed at one end of the tube 531406 Six 'Applications for Special Purposes'-/ " '"' xifeng 4 · The photoacoustic sensing device described in item 3 of the patent scope of Shenyan, where the acoustic impedance of the right body is between the human body and the body. Once it is resistant to physiological saline, it has low acoustic attenuation coefficient and has biocompatible characteristics. ^ & The photoacoustic sensing device described in item 4 of the patent application, wherein the sealing system uses polyurethane (PU). ^ 6 The photoacoustic sensing device as described in item 4 of Shenjing's patent scope, wherein the head end of the furnace package is shaped like a cymbal to increase the light condensing effect of the emitted light signal. 7 · The photoacoustic sensing device according to item 1 of the Shenjing patent scope, wherein the plurality of matching units are sputtered or glued outside the plurality of sensing units. 8. As claimed, the photoacoustic sensing device described in item 1 of the patent scope, wherein the plurality of sensing units are piezoelectric talman materials. 9. The photoacoustic sensing device described in item 1 of the scope of the patent application, wherein the main components of the absorption unit include: polymer materials, resins, and metal powders. -10 · According to the photoacoustic sensing device described in item 丨 of the scope of patent application, i, the number of the plurality of sensing units is eight. 11 · According to the photoacoustic sensing device described in item i of the scope of patent application, the acoustic impedance of the complex matching unit is between the impedance of the human body and the unit, and has a characteristic of low ultrasonic attenuation coefficient. Sensing