Joining and Assembly of Medical Materials and Devices

Joining and Assembly of Medical Materials and Devices

1st Edition - May 31, 2013

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  • Editors: Y N Zhou, M D Breyen
  • eBook ISBN: 9780857096425
  • Hardcover ISBN: 9781845695774

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Description

As medical devices become more intricate, with an increasing number of components made from a wide range of materials, it is important that they meet stringent requirements to ensure that they are safe to be implanted and will not be rejected by the human body. Joining and assembly of medical materials and devices provides a comprehensive overview of joining techniques for a range of medical materials and applications.Part one provides an introduction to medical devices and joining methods with further specific chapters on microwelding methods in medical components and the effects of sterilization on medical materials and welded devices. Part two focuses on medical metals and includes chapters on the joining of shape memory alloys, platinum (Pt) alloys and stainless steel wires for implantable medical devices and evaluating the corrosion performance of metal medical device welds. Part three moves on to highlight the joining and assembly of medical plastics and discusses techniques including ultrasonic welding, transmission laser welding and radio frequency (RF)/dielectric welding. Finally, part four discusses the joining and assembly of biomaterial and tissue implants including metal-ceramic joining techniques for orthopaedic applications and tissue adhesives and sealants for surgical applications.Joining and assembly of medical materials and devices is a technical guide for engineers and researchers within the medical industry, professionals requiring an understanding of joining and assembly techniques in a medical setting, and academics interested in this field.

Key Features

  • Introduces joining methods in medical applications including microwelding and considers the effects of sterilization on the resulting joints and devices
  • Considers the joining, assembly and corrosion performance of medical metals including shape memory alloys, platinum alloys and stainless steel wires
  • Considers the joining and assembly of medical plastics including multiple welding methods, bonding strategies and adhesives

Readership

Engineers in the medical device manufacturing field

Table of Contents

  • Contributor contact details

    Woodhead Publishing Series in Biomaterials

    Part I: Fundamentals of joining and assembly in medical materials and devices

    Chapter 1: Introduction to medical materials and devices

    Abstract:

    1.1 Introduction

    1.2 The anatomy of interaction

    1.3 Materials for drug delivery

    1.4 The metrology of biocompatibility

    1.5 Conclusion

    1.6 Future trends

    Chapter 2: Introduction to joining methods in medical applications

    Abstract:

    2.1 Introduction

    2.2 Welding processes

    2.3 Adhesive bonding

    2.4 Examples of applications

    Chapter 3: Microwelding methods in medical components and devices

    Abstract:

    3.1 Introduction

    3.2 Materials challenges

    3.3 Medical components and devices

    3.4 Joint design and process selection

    3.5 Testing and verification

    3.6 Conclusion and future trends

    Chapter 4: The effects of sterilization on medical materials and welded devices

    Abstract:

    4.1 Introduction to sterilization

    4.2 Sterilization methods

    4.3 The effects of sterilizing on different materials

    4.4 The effects of sterilizing on welded joints

    4.5 Selecting a suitable sterilization method

    4.6 Conclusions

    Part II: Joining and assembly of medical metals

    Chapter 5: Micro-welding of shape-memory alloys

    Abstract:

    5.1 Introduction

    5.2 Fundamentals of Nitinol shape-memory alloys

    5.3 Micro-welding of NiTi

    5.4 Future trends

    5.5 Conclusion

    Chapter 6: Joining of platinum (Pt) alloy wires to stainless steel wires for electronic medical devices

    Abstract:

    6.1 Introduction

    6.2 Material properties

    6.3 Material challenges in joining

    6.4 The crossed-wire joint

    6.5 Joining processes

    6.6 Future trends

    6.7 Conclusions

    Chapter 7: Evaluating the corrosion performance of metal medical device welds

    Abstract:

    7.1 Introduction

    7.2 Measurements of corrosion

    7.3 Direct measurements of corrosion current

    7.4 Considerations when gathering corrosion data

    7.5 Test sample preparation

    7.6 Instrumentation and equipment

    7.7 Interpretation of data

    7.8 Mitigations for weld corrosion

    7.9 Future trends

    7.10 Sources of further information

    Chapter 8: Laser hermetic welding of implantable medical devices

    Abstract:

    8.1 Introduction

    8.2 Hermetic-sealing techniques

    8.3 Laser conduction welding

    8.4 Focused laser beams

    8.5 Laser welding parameters

    8.6 Requirements for laser hermetic welds

    8.7 Conclusion and future trends

    Chapter 9: Validating hermeticity in welded metallic implantable medical devices

    Abstract:

    9.1 Introduction

    9.2 The physics of leak rates

    9.3 Measurement of leak rates – testing and verification

    9.4 Determining leak rate based on helium content

    Part III: Joining and assembly of medical plastics

    Chapter 10: Overview of welding methods for medical plastics

    Abstract:

    10.1 Introduction

    10.2 Fundamental processes of plastics welding

    10.3 Medical plastics and weldability

    10.4 Part and Joint Design

    10.5 Processes with external heating

    10.6 Processes with internal heating

    10.7 Processes with implant welding

    10.8 Potential impacts from other manufacturing processes

    10.9 Special applications for welding of medical plastics

    Chapter 11: Ultrasonic welding of medical plastics

    Abstract:

    11.1 Introduction

    11.2 Ultrasonic-welding processes fundamentals

    11.3 Ultrasonic-welding process parameters and control

    11.4 Weldability

    11.5 Horn design

    11.6 Part and joint design

    11.7 Process optimization

    11.8 Other specific applications

    11.9 Troubleshooting

    11.10 Advantages and limitations

    Chapter 12: Radio frequency (RF)/dielectric welding of medical plastics

    Abstract:

    12.1 Introduction

    12.2 Dielectric heating fundamentals

    12.3 Dielectric welding/sealing process description and process parameters

    12.4 Key factors affecting the sealing process and seal quality

    12.5 Weldability

    12.6 Testing approaches for seals and the dielectric sealing process

    12.7 RF welding process advantages, limitations and future trends

    Chapter 13: Transmission laser welding strategies for medical plastics

    Abstract:

    13.1 Introduction

    13.2 Advantages and limitations of laser welding

    13.3 Process description

    13.4 Main welding parameters and effects

    13.5 Forms of equipment

    13.6 Weldable materials

    13.7 Joint designs

    13.8 Monitoring and quality control

    13.9 Applications

    Chapter 14: Bonding strategies and adhesives for joining medical device components

    Abstract:

    14.1 Introduction

    14.2 Designing a joint with adhesive

    14.3 Mechanisms of adhesion

    14.4 Adhesion promotion

    14.5 Types of adhesives used in medical devices

    14.6 Conclusion

    Part IV: Joining and assembly of biomaterial and tissue implants

    Chapter 15: Advanced metal–ceramic joining techniques for orthopaedic applications

    Abstract:

    15.1 Introduction

    15.2 The challenges of joining metals to ceramics

    15.3 Mechanical joining techniques

    15.4 Direct and indirect bonded joining techniques

    15.5 Active brazing joining techniques

    15.6 Future trends

    Chapter 16: Tissue adhesives and sealants for surgical applications

    Abstract:

    16.1 Introduction

    16.2 Principles of tissue adhesives and sealants

    16.3 Definitions and general considerations

    16.4 Mechanisms of bonding

    16.5 Application methods

    16.6 Synthetic bioresorbable sealants

    16.7 Commercial resorbable synthetic sealants and adhesives

    16.8 Commercial resorbable bio-derived sealants and adhesives

    16.9 Commercial biostable bio-derived sealants and adhesives

    16.10 Commercial biostable synthetic sealants and adhesives

    16.11 Conclusion

    Chapter 17: Antibacterial adhesives for bone and tooth repair

    Abstract:

    17.1 Introduction to tooth repair

    17.2 Introduction to bone repair

    17.3 Future trends

    17.4 Acknowledgment

    Chapter 18: Testing bond strength: the case of dental biomaterials

    Abstract:

    18.1 Introduction

    18.2 Rationale for bond strength testing

    18.3 Classification of dental adhesive testing techniques

    18.4 Behavioural adhesive tests

    18.5 Structural adhesive tests

    18.6 Future trends

    18.7 Conclusion

    Index

Product details

  • No. of pages: 574
  • Language: English
  • Copyright: © Woodhead Publishing 2013
  • Published: May 31, 2013
  • Imprint: Woodhead Publishing
  • eBook ISBN: 9780857096425
  • Hardcover ISBN: 9781845695774

About the Editors

Y N Zhou

Y. (Norman) Zhou is the Canadian Research Council (CRC) Chair in Microjoining and Professor of mechanical and mechatronics engineering at the University of Waterloo, Canada. His research on microwelding and joining is advancing the frontiers of knowledge in this field and making significant contributions to the increased miniaturization of micro-devices and micro-systems.

Affiliations and Expertise

University of Waterloo, Canada

M D Breyen

Mark Breyen is the Director, Core Technologies at Medtronic Inc., USA.

Affiliations and Expertise

Medtronic Inc, USA

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