Catheter Design and Material Considerations for Sensors

时间： 2023-05-16 来源：Amphenol Sensors Blogs

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Catheters are indispensable tools in modern medicine, providing a means for diagnosis and treatment of a wide range of conditions.

However, with the ever-present need for more precise and accurate measurements of physiological parameters, SENSORS are increasingly being integrated into catheters.

Adding sensor technology into a catheter is no different than any other piece of medical equipment – it's not simply a plug-and-play process. Rather, catheter design and material considerations for sensors require careful planning and consideration of a variety of key variables that can impact performance and accuracy.

DESIGN CONSIDERATION FOR SENSORS IN CATHETERS

As with any type of catheter – be it one of the different types of Foley catheters or an intracranial catheter – there are some design principles that should always be considered:

Torque: The catheter should be able to withstand the torque generated by guide wire insertion with a guided path through arteries, as well as twisting of the catheter tubing.

Adhesion: The material used for the catheter should resist adhesion to tissue so that it does not cause any discomfort or damage.

Flexibility: The catheter tube should be flexible enough to allow for movement without compromising catheter integrity.

Strength: The material used for the catheter should be strong enough to withstand repeated insertion and removal from the body without any deformation or damage.

Infection prevention: The catheter should be designed with infection prevention in mind, using materials that resist bacteria and other microorganisms.

Kink resistance: The catheter shouldn't get damaged permanently by sharp bends.

But when a sensor enters the equation, there are other issues to consider for the design. Let's take a deeper look at what every catheter manufacturer should be mindful of:

Size

Real estate

Environment

Housing

Lead length

Supply voltage

Calibration accessibility

1. SIZE

This is one of the most basic considerations for every different catheter type.

Put simply, the sensor technology for a catheter needs to be able to fit safely and comfortably within the devices without compromising its integrity or effectiveness. In addition, sensor components must also be compatible with the size of other parts of the device such as tubing, connectors, valves, etc.

2. REAL ESTATE

While you should consider the size of the sensor, there must also be enough space inside the catheter to incorporate it into its design without compromising other features and functionality.

In a catheter, space comes at a premium. The available real estate for a sensor – as well as any other components – must be carefully managed throughout the design and catheter manufacturing process, as there may not be much of it, particularly in miniature devices.

3. ENVIRONMENT

When inserted into the body, catheters face a variety of environmental factors (pressure, temperature, chemical) that directly impact how the device and its components function. For sensors, this means that their materials and design must be resilient to these external – and sometimes, extreme – conditions.

Your design should also consider how the sensor will interact with other components in the device. For example, if the temperature of one component changes due to environmental pressures, it can affect the effectiveness of a neighboring component.

4. LEAD LENGTH

Lead length is the distance from the device body or connector up to where it interfaces with the signal conditioning circuit board. The lead length needs to be long enough for signal capture but short enough so as not to interfere with the movement of other components or parts of the device.

Remember: in general, longer lead lengths can result in higher electrical noise, signal attenuation, and degradation of the signal-to-noise ratio. On the other hand, shorter lead lengths can provide better signal quality and reduce noise interference. However, shorter lead lengths can also result in a higher risk of mechanical damage.

5. SENSOR HOUSING

This consideration applies largely to pressure sensors.

Designed to protect the monitoring device, a sensor's housing provides a durable and reliable barrier to the environment. It also acts as a buffer against environmental factors and vibration.

Inside a catheter, a pressure sensor's housing does even more.

In addition to providing protection from physical elements, it also acts as a shield against electromagnetic interference (EMI) signals passing through the device.

This interference can cause inaccurate readings or incorrect measurements, and thus reduce the accuracy of output from the pressure sensor. In extreme cases, it can even cause malfunctioning of the sensor itself. EMI signals can also disrupt communication between other components in the device.

6. SUPPLY VOLTAGE

Another pressure sensor-centric consideration, a consistent supply voltage is critical for the monitoring devices.

Pressure sensors work by converting the pressure signal into an electrical signal, which is then processed to obtain the pressure measurement. The accuracy of this conversion process is highly dependent on the supply voltage, which must be stable and consistent over time. Fluctuations in the supply voltage can cause errors in the pressure readings obtained from the sensor.

In other words, a sudden spike or decrease in a pressure sensor's supply voltage directly impacts the accuracy and reliability of its readings.

7. CALIBRATION ACCESSBILITY

Be it a MEMS pressure sensor or a medical temperature sensor, a catheter's sensor comes as uncalibrated. To that end, it's on a catheter's manufacturer to fine-tune and test the sensor so that it's able to work properly.

In order to do that, you need to have access to the sensor directly, which means the catheter needs to have a channel or opening so that the user can adjust, test, and calibrate it with ease.

Depending on the type of sensor being used, this approach may necessitate a different opening for each one. Furthermore, access points need to be sealed properly once calibration is complete as any unintentional breach could render the device useless.

MATERIAL CONSIDERATIONS FOR CATHETERS & THEIR COMPONENTS

While there are many material types used in catheters, there is one consideration that cuts across them all: biocompatibility.

Put simply, it’s the material’s property of being compatible with insertion into the body. This is particularly important for catheter manufacturing as the device – and its components – needs to be able to work in its environment without causing any kind of harm or irritation to the patient.

In addition, the materials used for a catheter's components must also be resistant to various environmental factors, such as temperature and pressure, without compromising the sensors' ability to take accurate readings for the same metrics.

Manufacturers must not only consider the compatibility of their materials but also how they interact with one another — especially if they come from different suppliers. This means testing each component individually as well as collectively so that you know what will work best for your design and use case.

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本文由上山打老虎转载自Amphenol Sensors Blogs，原文标题为:CATHETER DESIGN AND MATERIAL CONSIDERATIONS FOR SENSORS，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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目录- Company Introduction Optoelectronics Discrete Components Optoelectronics Standard Assemblies Optoelectronics hybrid Components Surface Mount and Chip Carrier OEM Pressure Sensors High-Reliability JAN Isolators/ COTS Fiber Optics VLEDs Steering Torque and Position Sensors Level Sensing Products Pressure Transducers and Transmitters Flush Mounting & Abrasive Media Submersible Transducers and Transmitters Flowmeters Temperature Instrumentation Calibration Services

型号- OP604ESA-B1,OP604ESA-B2,OP803TX,PB-AIVAC-0001-C-G,OP224,OPB930W51Z,OMH3019,3C91CTX,OPB700ALZ,P170SP1,OMH3131,OP223TX,OPB871P51TX,P270,OPB970N51,OPR5011,OMH304,2N2222AUBTXV,43LF,HCC242,SX-4431,OPB847TXV,OPB872N51TX,SX-4432,OP803SL,OPB872T55TX,HCC240,SX-4433,GPB-AIVAC-005-D-G,P160KNPD,OPI1264B,OPI1264A,OPI1264C,OPF372A,OMH307,OPB871P51TXV,OP235TX,OPB870N51TXV,2N2222AUATXV,A,OPB971N51,B,OPV332,C,D,SX-4300,E,PB-AIVAC-0001-B-G,4N49UTX,SX-4428,SX-4429,OPB870P11TX,OPB390L11Z,OPB811W55Z,5711,OPI150,OPB810W51Z,5713,OPB983T51Z,OP224TX,OPB870L11TXV,OPR5910T,OP535B,OPB848TX,P170SPD,PB-AIVAC-001-A-G,OPB815WZ,PSXX-2,OPB872L55TXV,SX-4413,OPF2412,SX-4414,PSXX-1,SX-4417,OPB871T51TXV,OP236TX,2N5794UTXV,OPB870N11,OPB872T11TXV,OPL550,OPI1268,OMH3150B,OPI1266,OPB350W062Z,SX-4487,PB-AIVAC-0001-A-G,OPB930W55Z,OPB848TXV,OPB885Z,OMH3040S,OPB870T11TXV,OPB704WZ,OPB871N55TXV,PB-AIVAC-005-E-G,OPR5011T,5611,5613,OMH3040B,OPB847TX,SX-4475,SX-4476,SX-4473,OP505A,SX-4474,SX-4479,OPB872T11TX,OPB100-SZ,PB-AIVAC-001-B-G,OP805SL,OMH3075S,OP132,OPB365T55,3C92CTX,OPB872T55TXV,OPB990T51Z,OPB701ALZ,OPB730F,OPB350,OPB810L51,OMH3075B,OPB872L55TX,OP804TX,OPB200,2N6989UTX,SX-440,OPB870P55TX,2N5794U,OPB871L51TXV,P170N2,OPB822SD,OVS5MGBCR4,OPB961N51,OMH3150,EN12-HS,OP604ESA-C2,OP604ESA-C3,PSXXM,PSXXL,EN16-H,PB-AIVAC-001-C-G,OP232,4N48UTX,OP233,EN16-V,OPF370A,5401,PB-AIVAC-002-A-G,OMH3020,5403,OP805TX,4N23(A)(U),OPB821TXV,OPB872P51TX,OPB980L55Z,OP804TXV,OP224S,OPB825,OPB704,OPI110C,OPB982P51Z,OP181,OPB870P55TXV,OPB832W55Z,OPB871T55TX,OPB711,OP603TX,OP265FAB,5311,2N2222AUB,2N2222AUA,OP604TXV,OPB870N11TX,3371,OPB990P51Z,7601,7603,OPI150TX,OPB870T51TXV,OP234W,OP603TXV,OPB804,OVSRRGBCC3TM,OPB829DZ,OPB961T51,OPB992T51Z,OVQ12S30W7,P120PK,OPB872N55TX,P170NP1,OP550A,OPB821TX,EN11-HSM,OPB720B-30VZ,OPR2100HST,OP602TX,OMH090S,OPB818,OPB829CZ,EN11-HSB,P140KH,OPB700TX,OMH090B,HCC242TXV,OPB821S5Z,OPV310Y,OPB745,6671,6673,5101,OPB620,5103,P160KN/KN2,HCT7000MTXV,OPB625,SX-4404,PS45G,OPB627,OPB890P51Z,OPB733TR,OH090U,GPB-AIVAC-002-D-G,OPB831W55Z,OPB983P51Z,OPB970N11,4N24(A)(U),OPB870N55TX,OPB871P55TXV,HCC240TXV,OPB910W55Z,OPL530,OPV314,OPB100Z,OPB872P55TXV,3N261TX,OPB870P51TX,EN11-VSM,OPB755TZ,OPI120TXV,OPB871L51TX,OPR5925,OPB390P11Z,OPB870P11TXV,2N5794UTX,OPB610,OP604TX,OP803TXV,OPB730,4N22(A)(U),2N4854UTX,OPI123,2N6989UTXV,OPI125,OPR5915,OPI126,OPI127,OPR5910,OPR5911,OPV314Y,OPR5913,OPI120,OP906,OPB820S10,4N24UTXV,3N262TX,2N6987URXV,OPB870T55TX,OPB608B,OPB980T55Z,OPB608A,OPB608V,OPB870L11TX,OPB871T51TX,2N2222AUATX,2N4854UTXV,PB-AIVAC-0004-E-G,6121,6124,6126,OPB911W55Z,OPB706A,OPB872N55TXV,PB-AIVAC-003-D-G,4N47UTXV,OPB870L51TXV,OPB870N11TXV,OPB718Z,OPB872T51TXV,OP223TXV,4N22U,OP593A,OPB830W55Z,OPB815L,OPB871L55TXV,6373,22,23,P090S,7221,25,7223,4N22UTX,3N263TX,P090L,OPB870N51TX,6371,OVSARGB4R8,OPB390T51Z,OPB680-20,OPB872P51TXV,4N47U,7216,6127,OPL800TX,OP166A,2N2222AUBTX,PB-AIVAC-0004-D-G,OPB903W55Z,6143,OPB871N51TXV,OP913WSL,OPB840W11Z,PB-AIVAC-003-E-G,OPB716Z,OPB872P55TX,OPB732WZ,4N48U,OP235TXV,OP240B,OP240A,4N24U,6138,3C92CTXV,6153,44,6273,9301,7483,45,OP245A,7486,3C91CTXV,9303,GPB-AIVAC-010-D-G,OP232W,P09XS,OPB870T11TX,OPB891T51Z,7481,P09XN,4N23UTXV,OPB870L55TX,4N49U,OVS5MBBCR4,OP245B,OPR5500,OPB912W55Z,OPI120TX,PB-AIVAC-0004-C-G,6163,OPB460N11,OPB840L11,2N2907AUBTX,2N5796UTX,P170NPD,4N48UTXV,OP805TXV,OP233W,OPB880P51Z,OPR2100,OMH3019S,OPR2101,62,OPB830W11Z,2N4854U,64,66,67,68,7386,OPB390T55Z,OP133W,OPB350W125Z,OP266W,OPB828D,OPR2100HS,OMH3019B,6173,7383,OPB870N55TXV,OPB816Z,HCT802TXV,OPB871L55TX,OPB870T55TXV,72,OPF482,OPB872L51TXV,6186,7274,78,7276,OPB380P55Z,OPB933W51Z,PB-AIVAC-0004-B-G,OPB840W55Z,OP602TXV,OPR2100T,OPB871T55TXV,OPB871N51TX,82,83,84,OPB100-EZ,OPB870T51TX,7286,OHB3040,7288,SX-4289,4N47UTX,4N24UTX,3N243TX,OPB913W55Z,OPI150TXV,2N5796U,OP224ESA-B2,OPB973N51,OP224ESA-B1,OP980,7284,OP224ESA-B3,OMH3020S,EN12-VS,OPB991L51Z,4N49UTXV,PB-AIVAC-005-C-G,OPB720B-12Z,93,8146,OHB3040B,OPB871P55TX,OMH3020B,PB-AIVAC-0004-A-G,8148,OPB880T51Z,PB-AIVAC-001-D-G,4N22UTXV,OP224ESA-C1,OP802WSL,OPB872T51TX,OP224ESA-C3,OP224ESA-C2,PB-AIVAC-010-A-G,OPB800W51Z,2N2907AUBTXV,OHB3040S,PB-AIVAC-002-B-G,OPB990T55Z,OPB710F,OP800A,OPB940W51Z,HCT802TX,8156,OPR5200,8154,OPL800TXV,SX-4388,P110KV/KVI,OP506B,OP506A,HCC240TX,3N244TX,8152,4N48(A)(U),P08XS,OPB943W51Z,8151,OVSRRGBCC3,P08XN,OPB700TXV,2N2907AUATXV,2N5796UTXV,OP291A,GPB-AIVAC-010-E-G,OPB800L55,PB-AIVAC-005-B-G,OPB871N51,SX-4491,OPB840W51Z,OPB811L55,4N49(A)(U),PS60G,P170S,OPR2800V,OPB870L51TX,PB-AIVAC-001-E-G,OPR2800T,2N2907AUATX,P170N,OP950,PS100-2,OMH3150S,PS100-1,OP604S,PB-AIVAC-003-A-G,P170S2,P09X5N,PB-AIVAC-002-C-G,OPB901W55Z,OP580DA,OPB842W51Z,2N6987UTX,OPB990L51Z,PB-AIVAC-0001-E-G,3N245TX,OPB857Z,P160KNP,OPB822S,2N2907AUA,PB-AIVAC-005-A-G,2N6987U,OP236TXV,OPB870P51TXV,2N2907AUB,OP140A,P230,OPB870L55TXV,OPB941W51Z,4N47(A)(U),OVS5MRBCR4,P261P,PB-AIVAC-010-C-G,P140KH1,PB-AIVAC-003-B-G,OP298A,OPI125TXV,OPB350L062,OPB872N51TXV,OPB871N55TX,OP225TXV,OPF522,P260T,OPB872L51TX,PB-AIVAC-0001-D-G,OPB900W55Z,P260S,P260P,89/90,OPB350W250Z

2022/1/6 - TT ELECTRONICS - 选型指南代理服务技术支持采购服务

Keeping Cool with Data Center Temperature Sensors

Data center temperature sensors are the eyes and ears of your climate control system. These tiny devices provide real-time data on temperature and some insight into potential humidity levels throughout your facility. They come in various forms, each suited to different applications.

2024-10-31 - 应用方案代理服务技术支持采购服务

Amphenol Sensors（安费诺）建筑及工业应用传感器选型指南

目录- Chip Cap 2完全校准的温湿度传感器 Telaire Ventostat®T8700壁挂式温湿度变送器 Telaire Ventostat®T8031 CO2小型风管式C02传感器 Telaire®T8041/T8042 分管式C02传感器 Telaire T8100-R系列挂壁式C02和温度变送器（带继电器） Telaire®7000室内空气品质监测器 Telaire VaporstatTM 9002红外露点变送器 Telaire®配件 Telaire HumiTrac™温湿度变送器 T9602湿度与温度传感器 AAS-53系列水管型温度变送器 ADT/AOT/AIT温湿度变送器使用说明书

型号- P40250128,CC2D265,P40250129,P40250126,P40250127,P40250125,P40250122,P40250123,DC95F302W,P40250120,P40250121,T8031,CC2D255,EHR-4,T8100-D-R,P40250139,K53,T8700,CC2A23,PT1000A,AIT,PT1000B,CC2A25,P40250133,P40250131,T2075NG,P40250130,T804K0-10V,T1508,T8200-D-5P,T8042-5VI0-5V,T9602-5-A-1,NI1000,9002,T9602-3-A-1,T5100,P40250149,CC2A35,T8700-E-D,P40250147,0-5000PPM,P40250144,PT100A,T7001I,P40250145,PT100B,P40250142,P40250143,T8100,S4B-EH,CC2A33,P40250141,CC2D235,CC2D355,T7001,PT1000,T2072,T7001D,CC2D25,T9602-3-A,T8042I0-10V,CC2D23,P40250156,T8041,T8100-R,P40250151,T8042,P40250150,T9602-3-D,NTC10K,CC2025,7000,T9602-3-D-1,CC2D35,T9602,CC2D33,ADT,NTC15K,T8200,CC2D335,CHIPCAP 2,NTC10K-II,T2090,T1551,T1552,MPNT3D03750M4,NTC20K,T2007,T8700-D,T8700-E,T8100,T2080,T8100-EC,P40250109,PA0250118,T8100-E-D-GN-5P-R,PA0250115,T1505,P40254275,P40254276,P40254277,P40250189,P40250186,P40250184,P40250185,T8300,P40250182,P40250183,P40250181,AAS-53,8000,PT100,T7001SK,P40250119,NTC10K-A,AOT,P40250117,T9602-5-A,P40250113,P40250114,P40250111,P40250112,DC95F103W,T2076NG,P40250110,P40250193,T9602-5-D,T8001,P40250191,7001D,P40250192,T8002,T9602-5-D-1,MPNV12R30M 16004616,B4B-EH-A,P40250190,T8041-5VI0-5V,RS485,NTC10K-III

AMPHENOL SENSORS - 选型指南代理服务技术支持采购服务

Amphenol Sensors(安费诺) 汽车传感器选型指南

目录- 汽车传感器解决方案介绍车厢空气质量系列传感器排放处理系列传感器新能源汽车传感器应用测量汽车应用中最为关键的参数

型号- SM-UART-01L,PT200,T6703,TPMS,DPS,G-CAP2,SM-UART-01D,A2103,NPI-19,T6713,A-2102,EGR,A-2103,NPP-301,GE-1935,A-2121,ZTP,DPF,SM-UART-01L+,SM-PWM-01C,NPX1

AMPHENOL SENSORS - 选型指南代理服务技术支持采购服务

热敏电阻元器件、光电感应器、压力传感器、粉尘传感器；尿素传感器、印刷电路电阻、电位器和位置传感器 ISO 9001:2015 Certificate of Registration (thermistor sensors,optoelectronic sensors,pressure sensors and dust sensors;urea sensors,printed circuit resistors,potentiometers and position sensors ISO 9001:2015 Certificate of Registration) (FM 612112)

描述- Amphenol (Changzhou) Connector Systems Co., Ltd. 获得 ISO 9001:2015 质量管理体系认证，证书编号 FM 612112。该体系覆盖热敏电阻元器件、光电感应器、压力传感器、粉尘传感器设计制造；尿素传感器（包括超声液位、浓度及温度感应）、印刷电路电阻、电位器和位置传感器的制造；以及温度验证设备维护服务等业务。证书有效期至 2027 年 6 月 11 日。

2024-06-12 - AMPHENOL SENSORS - 测试报告代理服务技术支持采购服务

Amphenol Sensors(安费诺) 医疗传感器选型指南

目录- NPA贴片式压力传感器系列 NTC AB6 型 "SC/MC"系列专为医疗设汁 MA100系列 ZTP-148SR系列 ZTP-101T系列 NPC-100系列一次性医疗压力传感器 NPC-1210系列 NPG-1220系列中压传感器 NPI-12卫生型压力传感器、不锈钢介质隔离压力传感器 NPI-15系列电流激励高压、介质隔离压力传感器 NPI-15VC系列电压激励、高压、介质隔离压力传感器 NPI-19系列电流激励、中压、介质隔离压力传感器 NPI-19系列电压激励、中压、介质隔离压力传感器 NPP-301系列贴片封装压力传感器

型号- NPP-301B-700AT,NPC-1001000,NPI-12-101G,MC65F103C,NPP-301A-100AT,NPI-19X-YYYZZ,NPI-15X-YYYZZ,NPI-19J-XXX,B35,ZTP-148SR,NPI-19A-XXX,MC65F103A,NPP-301A-200A,MC65F103B,AB6,NPA-300,NPI-19H-XXX,NPA-700,AB6E8,B43,NPP-301B-200A,NPI-12,NPI-19X-XXXXV,NPI-15,SC30F103W,NPP系列,NPP-301B-200AT,SC30F103V,MA100BF103C,NPI-19,SC30F103A,SC,MA100BF103B,MA100BF103A,NPI-15B-XXX,MA100GG232C,NPI-15C-C00903,NNP301B,NNP301A,MA100GG103CN,NPP-301B-700A,BR16,BR14,BR11,NPC-1210XXXX-YZ,ZTP-101T,NPC-100T,MA100GG103BN,MA100,NPP-301A-100A,NPC-100,NPI-19A-C01864,BR23,P20,P25,AB6B4,MC65F232A,MC,AB6B2,MC系列,NPI-19A-002GV,MA100GG103AN,AB6A8-BR16KA103N,NPI-15VC,NPP-301A-200AT,P30,BR32,NPA-100,NPC-1220XXXX-YZ,NPA-500,SC50F103W,NPP-301B-100A,NPA,NPP-301B-100AT,MC65F502B,NPI-15A-XXX,B05,B07,SC30Y103W,NPI-15J-XXX,NPP,NPP-301A-700A,BR42,NPP-301,MA100GG103B,NPI-19B-XXX,NPI-12-101GH,MA100GG103A,MC65G503B,MA100GG103C,NPC-1220,NPP-301A-700AT,B10,NPI-15H-XXX,B14,NPI-15XXXXXX,NTC AB6,BR55,NPC-1210,SC系列

2018年7月 - AMPHENOL SENSORS - 选型指南代理服务技术支持采购服务