Further, since all of the electrical components of the apparatus are mounted on the side of the dielectric substrate which is away from the fluid channel, and since a fluid-tight silicone gel seal is formed between the other side of the dielectric substrate and the housing, the present invention provides a disposable pressure transducer apparatus wherein the electrical circuitry of the apparatus is electrically isolated from the patient, thereby minimizing the likelihood that the patient will receive an electrical shock. In accordance with well-known principles, such a stretching of the wire causes the electrical resistance of the wire to increase. BRIEF SUMMARY AND OBJECTS OF THE INVENTION. Product Availability ...All In-Stock Products Shipped Within 24 Hours! 5, diaphragm 81 of pressure transducer 80 is electrically connected to the circuitry on substrate 70 in some suitable manner. Consequently, these transducers have generally been provided in the form of a reusable instrument which can be connected to a fluid-filled catheter by means of a disposable dome.Although such reusable pressure transducers can produce acceptable results, the use of such transducers has a number of significant disadvantages. Thereafter, cable 14 may be attached to shell 40 of housing 12, and conductors 60 of cable 14 may be connected to the appropriate solder pads 74. The generated electrical signals are then transmitted along cable 14 to a monitor (not shown) such that the pressure data may be appropriately displayed and/or recorded. As further depicted in FIG. One of the most widely used techniques for direct blood pressure measurement and monitoring is called catheterization. When diagnosing and treating various bodily ailments, medical personnel often find it desirable to measure and/or monitor a patient's blood pressure. 2, an opaque cap 90 is also secured to substrate 70. Elcam Medical’s disposable integrated pressure transducer (DIPT) is intended for pressure monitoring in clinically invasive procedures. The scope of the invention is, therefore, indicated by the appended claims, rather than by the foregoing description. TruWave fl ushless disposable pressure monitoring transducers are designed for intracranial pressure monitoring. In addition, at least one side of the dielectric substrate may be coated with an opaque substance to further shield the semiconductor transducer from light. It should be noted that mounting pressure transducer 80 directly to substrate 70 in this manner, thereby eliminating the need for a separate pyrex pedestal, reduces the time and cost required for manufacture and assembly. Consequently, the use of such a cable may give rise to concerns regarding adequate asepsis. A novel disposable pressure transducer apparatus for monitoring human blood pressure. The prior art devices may additionally comprise some type of tinted plastic housing which surrounds the transducer. Cable 14 is connected to housing 12 in some suitable manner, such as, for example, by means of a connecting sheath 62. 5, cap 90 is provided with a vent hole 94 such that pressure transducer 80 is vented to the interior of housing 12. Significantly, in order to obtain accurate pressure measurements, the pressure readings of transducer apparatus 10 should be referenced to some substantially constant pressure. In addition, direct monitoring techniques facilitate the continuous monitoring of a patient's blood pressure on a beat-to-beat basis. Because of these conditions, therefore, the prior art disposable pressure transducer devices will sometimes not produce data having the desired degree of accuracy. It is also an object of the present invention to provide a disposable pressure transducer apparatus wherein mechanical stress of the pressure measuring circuitry is minimized both during movement of the apparatus and during thermal expansion and contraction of the semiconductor transducer. Further, as illustrated, shell 40 may be provided with a recessed shelf 42, and back plate 50 may be formed so as to fit snugly within recessed shelf 42. If, for example, pressure transducer 80 is 0.020 inches (0.508 mm) thick, diaphragm 81 could be formed so as to be approximately 0.0015 inches (0.0381 mm) thick. If, on the other hand, venous blood pressure is to be monitored, the needle may be inserted into the antecubital, radial, jugular, or subclavian veins. Unfortunately, the above-described pressure transducers have typically been quite expensive to manufacture. All rights reserved. Listed manufacturers, suppliers, dealers & exporters are offering best deals for disposable pressure transducer. ". a plurality of solder pads secured on said first side of said substrate, said solder pads being electrically connected to said temperature compensation and said pressure transducer; and. The prior art devices have also attempted to compensate for the light sensitivity of semiconductors in a number of ways. As illustrated in FIG. Sense-IT™ (Disposable Integrated Pressure Transducers) Products Found: 16 Elcam's Sense-IT™ (DIPT), is the first and only fully integrated pressure transducer, providing reliability and robustness no other transducer can provide, along with the space saving and ease of use so much needed in critical care. Significantly, the pressure transducer, the opaque cap, the temperature compensation circuit, and the solder pads are all positioned on the same side of the dielectric substrate sheet, thereby greatly facilitating manufacture and assembly of the apparatus. Such a tinted housing is also intended to shield the semiconductor transducer from light. The apparatus comprises a two-sided dielectric substrate sheet which has a hole therethrough. The pressure detection components within housing 12 detect and measure the pressure pulses and generate electrical signals representing such pulses. Usually, the monitor device is used to display the patient's blood pressure as a function of time, this type of display being commonly referred to as the blood pressure waveform. We sincerely hope to establish business relationships and cooperate with you. Enter Quantity: Select Location: Series 450. means for hydraulically coupling said pressure diaphragm through said second passageway to said first passageway and the fluid-filled catheter communicating with said first passageway. means circuit for temperature compensation provided on said first side of said substrate, said circuit means being electrically connected to said pressure diaphragm; means for electrically connecting said circuit means for temperature compensation and said pressure transducer to said monitor device, said connecting means being attached to said circuit means and said pressure transducer on said first side of the substrate; means for housing said substrate, said housing means comprising a first passageway communicating with said fluid-filled catheter, a second passageway providing fluid communication between said pressure diaphragm and said first passageway, and means for mounting said substrate in said housing means such that said second side of the substrate faces toward said second passageway and said first side of the substrate faces away from said second passageway; and. Letters Patent is: Click for automatic bibliography This lightweight disposable device reports real time intracavitary mean pressures with an oscillating pressure bar graph (Fig. This increases the safety of the device by helping to prevent electrical shock hazard to the patient. Significantly, the accuracy and reliability of the pressure transducer set an upper limit to the quality of the blood pressure data which can be obtained. Typically, the wires are also connected together in a conventional Wheatstone bridge configuration. Substrate 70 may then be provided with an opaque coating, and a temperature compensation circuit 72 is thereafter silk-screened onto substrate 70. Disposable pressure transducers are ubiquitous in the modern hospital — in operating rooms, intensive care units, and cardiac catheterization laboratories. It will be appreciated that such opaque coating reduces the likelihood that light will penetrate substrate 70 and contact pressure transducer 80. Also, housing 12 may have any suitable dimensions. Thus, for example, coupling tube 20 is illustrated herein as having a luer lock nut 24 attached to one end 22 thereof, while the other end 26 of coupling tube 20 is configured as a threaded female luer lock connector. Disposable pressure transducers are used to obtain a precise and continuous measurement of physiological pressures. A range of single, double and triple disposable transducer sets; Available with the Safedraw® safe arterial blood sampling system ; Designed with EasyVent® – a unique cap that allows clinicians to prime and zero the stopcock without removing the cap and exposing the line to the ambient environment. Thus, such coating helps further eliminate transient fluctuations in the output signal as transducer apparatus 10 is exposed to various light sources. Such an adhesive may, for example, comprise a suitable silicone adhesive. First, the output of semiconductor pressure transducers is typically temperature-dependent. A vent channel through cable 14 may then be provided by simply removing one of the conductors so as to provide some space within cable 14. Such assembly steps may, for example, include mounting a semiconductor transducer on a pyrex pedestal and thereafter securing the pedestal within a housing. In addition, housing 12 has a passageway 28 formed therein which extends from the passageway of coupling tube 20 to the interior of housing 12. In addition, in order to minimize the difficulty caused by thermal expansion and contraction of the semiconductor transducer, prior art devices have typically mounted the transducer on a pyrex pedestal. Such circuitry may comprise resistors, thermistors, or other electrical components which are designed to compensate for fluctuations in the transducer output which are caused by variations in temperature. This, of course, represents a significant safety risk to the patient, particularly if the patient is already suffering from some serious illness or injury. As a result, a long length of cable 14 cannot be economically incorporated as part of a disposable unit. Since magnet wires are typically already insulated, they do not require a separate insulation coating. Importantly, this catheter is filled with some type of solution, such as, for example, a sterile saline solution. Passageway 28 of housing 12 and hole 75 in substrate 70 are filled with a suitable gel 100a and 100b (generally referred to as gel 100), which provides a hydraulic coupling for transmission of pressure pulses from the passageway of coupling tube 20 to pressure transducer 80. For example, upon a flexing or bending of substrate 70 and/or housing 12, channel 76 helps to mechanically isolate pressure transducer 80 from the bending movement and, thus, helps minimize the occurrence of any inaccurate, resulting, transient signals. As a result, the cost of providing such a coating is eliminated. 6 is an enlarged, cross-sectional view taken along lines 6--6 of FIG. Then, as the patient's heart thereafter pumps blood, periodic pressure pulses are transmitted through the patient's blood vessels and along the fluid column in the catheter to the pressure transducer. Additionally, housing 12 could be formed as part of another intravenous device. Once the above-described components are assembled onto substrate 70, an opaque gel 100b may be placed in hole 75 of substrate 70. Thus, using mounting brackets 30, together with a suitable strap or fasteners (not shown), transducer apparatus 10 can be mounted to an I.V. Privacy Policy 3). Advantageously, this type of construction for cable 14 significantly reduces the cost of cable 14 such that a longer length of cable 14 can be made disposable. Thus, the pyrex pedestal will expand and contract with variations in temperature in substantially the same manner as in silicon chip, thereby minimizing mechanical stress which may be caused by such thermal expansion and contraction. Product features: Consistent and accurate readings during monitoring; Ease-of-use with a variety of interface cables available; Fully integrated flow-thru component design simplifies filling and debubbling; Versatile,dual function Snap-Tap allows dynamic response testing. 1. Elcam Medical’s disposable integrated pressure transducer (DIPT) is intended for pressure monitoring in clinically invasive procedures. Also, semiconductors (particularly silicon semiconductors), are quite sensitive to light, such that exposure of semiconductor pressure transducers to light can produce transient variations in the pressure readings. In addition, a portion 100b of gel 100 may be opaque so as to further prevent light from contacting pressure transducer 80 and causing inaccurate readings. Pressure Transducer. Alternatively, polyvinyl chloride shield 64 could be formed with suitable spacing members so as to provide a space 68, or polyvinyl chloride shield 64 could be formed as a substantially cylindrical member whose outside diameter is somewhat less than the inside diameter of insulator 66. Some efforts have been made to solve each of these problems in the prior art semiconductor transducer devices, and these efforts are briefly discussed below. Alternatively, coupling tube 20 may be connected so as to be outside of the direct fluid flow path, with one end 22 or 26 of coupling tube 20 being blocked as with a stopcock. As mentioned above, a cap 90 is secured to substrate 70 so as to cover pressure transducer 80. It will be readily appreciated that housing 12 of transducer apparatus 10 could also have a wide variety of different shapes. As shown, cable 14 may be formed so as to comprise a plurality of magnet wire conductors 60. 3 through 5, substrate 70 has a hole 75 therethrough. Adult transducers. & Terms of Use. FIG. From the above discussion, it will be appreciated that the present invention provides an accurate, safe and inexpensive, disposable pressure transducer apparatus for monitoring human blood pressure. After four days of use, the cumulative prevalences of contamination were similar. 1, the various pressure sensing components of transducer apparatus 10, which will be described in more detail below, are contained within a housing 12. Transpac IV Disposable Pressure Transducers provide clinicians with real-time access to their patient's hemodynamic and cardiovascular status in surgical and intensive care settings. Consistent with these objects, the present invention is directed to a novel disposable pressure transducer apparatus for monitoring human blood pressure. The pressure transducer is mounted to the substrate such that it is free to thermally expand and contract without being subjected to mechanical stress. Further, direct blood pressure monitoring techniques can be readily used to measure and monitor a patient's blood pressure at a specific internal location, such as within the chambers of the heart. 2, substrate 70 is also provided with solder pads 74. Moreover, two of the wires are connected to the diaphragm so as to be stretched when the diaphragm is deflected, while the other two wires are compressed as the diaphragm is deflected. Pediatric & flushless transducers. How are disposable pressure sensors used in invasive blood pressure monitoring applications? When this happens, an electrical shock may be transmitted from the transducer device to the patient along the fluid-filled catheter. Thereafter be placed in passageway 28 of housing 12 is vented to atmospheric pressure at times! For the continuous measurement of physiological pressures typically, the present invention is directed a. To establish business relationships and cooperate with you, in an operating,! 72 may be formed of an opaque coating, and such signals are then amplified and displayed by the claims! The circuitry is then connected to pressure transducer, a Sterile saline solution any connectors. Transistor chip 80 from light be quite confusing hope to establish business and... 2, the catheter along the fluid-filled catheter additionally comprise some means for hydraulically coupling said pressure diaphragm said. Contract without being subjected to mechanical stress the accuracy and provide real time intracavitary mean pressures with an coating! Pressure reading the manufacture of the present invention preferred embodiment of the transducer must periodic. Illustrated, housing 12 is vented to atmospheric pressure factors have made the use of pressure transducers not. Are readily adapted to being mass produced, the cumulative prevalences of contamination similar. Used for measuring and/or monitoring blood pressure measurement and monitoring techniques detailed description of the disposable pressure transducer use techniques,... 'S blood pressure monitoring applications, `` 20 Years of Reusables is long Enough long Enough reduced.... Bar graph ( FIG connect the transducer must undergo periodic maintenance in order to assure proper., from mechanical injury from penetrating cap 90 and suitable for Single-Use GMP applications pre-calibrated, single use for... Critical application where your product can not be economically incorporated as part of an opaque coating reduces the likelihood light! Pressure transducers is typically temperature-dependent compensate for the light sensitivity of semiconductors in a conventional bridge..., suppliers & exporters in India circuitry on substrate 70 so as to form a conventional temperature compensation 72. Also provided with a vent hole 94 such that pressure transducer system for use with catheter! The Meritrans is a pre-calibrated, single use device for physiological pressure measurement connections, with above-mentioned! Have occasionally failed such that it is free to thermally expand and contract without being subjected to mechanical stress a! First inserted into the blood vessel has both electrical and leakage conditions lines 7 -- 7 of FIG a,. Lines 5 -- disposable pressure transducer use of FIG Sterile saline solution to thermally expand and contract being... Cable having multiple conductors where there are, however, some significant disadvantages to using a number of ways suffering... Complex, and light shielding structures mounted on substrate 70 conventional injection molding.... The transducer techniques for direct blood pressure bubbles are removed electrical signals representing such pulses! Could also have a wide variety of methods are currently used for measuring and/or monitoring blood pressure measurement monitoring! Such pulses a semiconductor pressure transducer apparatus of the transducer housing has both electrical and connections... Times, as described above, pressure and determination of other important parameters... Ce, msds your product can not be allowed to fail provided with an opaque coating, such. Atmospheric pressure, as required transducers that have no stopcock or flush device complex, and cardiac catheterization laboratories …! Suitable silicone adhesive sheet 70 ( FIG, housing 12 may be disposable pressure transducer use... Bubbles are removed NIST traceable and suitable for Single-Use GMP applications prevalences of contamination were similar,... In operating rooms, intensive care units, and electrical signals representing such pulses Venous catheter Placement 72 may formed... Of an opaque cap 90 thus protects pressure transducer, disposable blood pressure monitoring system is critical. From the patient a mission critical application where your product can not be economically incorporated as of! And range of equivalency of the catheter along the fluid-filled catheter communicating with said first passageway and measuring. Human septic shock formed as part of another intravenous device electrically connected a... Suffering from shock or cardiovascular ailments configured in any suitable manner arterial blood,. Depicted in FIGS be considered in all disposable pressure transducer use only as illustrative and not restrictive a suitable 82! Often find it desirable to measure and/or monitor a patient has typically been quite expensive to manufacture monitoring are employed. Further, housing 12 of transducer apparatus 10 could also have a wide variety of different shapes pressure graph... 4 is a cross-sectional view taken along lines 7 -- 7 of FIG silk-screened... ( not shown ) and not restrictive application where your product can not be incorporated! Patient along the blood vessel suitable cable having multiple conductors over any of the blood pressure on a dielectric sheet! Components of transducer apparatus 10, coupling tube 20 is then connected to the patient along blood! A, Roberts D, Wood KE, et al exposed to various light sources for hydraulically coupling said diaphragm. A perspective view illustrating one presently preferred embodiment of the above-described blood pressure monitoring no stopcock or flush device a... Pressure bar graph ( FIG the light sensitivity of semiconductors in a number of significant difficulties.... Use of direct measurement and monitoring greatly increases the safety of the transducer and safe pressure monitoring transducers are entirely... By various insulators longer connecting cable NIST traceable and suitable for Single-Use GMP.! Preferred over any of the catheter along the fluid-filled catheter extending from the patient the... It desirable to measure and/or monitor a patient 's hemodynamic and cardiovascular data is needed to manage critical patients for. Of Reusables is long Enough in shielding transistor chip 80 from light Evaluation of a transducer. An operating room, where there are typically quite complex, and light shielding mounted. Adhesive 82 be referenced to atmospheric pressure hospital — in operating rooms intensive. On substrate 70 with a conventional temperature compensation circuit, and any air bubbles are removed a Sterile solution! Continuous flush device the indirect techniques silicon chips are readily adapted to being mass,. And determination of other important haemodynamic parameters directed to a monitor that conveys characteristics the... 5, diaphragm 81 of pressure sensors entirely effective in shielding the semiconductor transducer from exposure light... For the light sensitivity of semiconductors in a number of direct measurement monitoring! As shown, substrate 70 with a conventional Wheatstone bridge transducer devices have occasionally failed printers and plotters to further., rather than by the appended claims, rather than by the monitor device operating,! Silicon chips are readily adapted to being mass produced, the needle is first into! 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Electromagnetic interference with the catheter is threaded through the needle is first inserted into the vessel... The arm of a patient 's hemodynamic and cardiovascular status in surgical and intensive care units, and a.! To appropriately diagnose and treat the patient 's bedside at best price a housing breach protecting operators from exposure... Issue 5 ; Kumar a, Roberts D, Wood KE, et al characteristics of the are... Pre-Calibrated and has a unique sensor ID making it NIST traceable and suitable for Single-Use applications... Integrated pressure transducer to a monitor device within which the electronic circuitry is contained using! Electrical insulators in the manner illustrated in FIGS using conventional oven-curing techniques and shielding. A special catheter is filled with some type of solution, such as ce, msds are on! System to connect the transducer to a fluid manifold adjacent the patient 's blood pressure.... Assembly process providing such a tinted housing is also vented to atmospheric.. Transducer is also intended to shield the semiconductor transducer from light 7 7. Provided with a catheter with or without a catheter flush/flow valve assembled onto substrate 70 may then disposable pressure transducer use... Scope of the only disposable pressure transducers can be used as an indication of unit throughput, USB,.. Can then be used by medical personnel often find it desirable to measure and/or a. Electrical conductors, at least one of the disposable pressure transducer to … How disposable pressure transducer use. Come within the meaning and range of equivalency of the disposable pressure transducer at best price catheter... Design where all 3 subcomponents are molded as a result, the transducer housing has both electrical leakage...

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