Incorporating new dynamic structures in ultrasonic surgical devices enabled by 3D printing titanium.

通过 3D 打印钛将新的动态结构融入超声波手术设备中。

• 批准号: 2812613
• 金额: --
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2812613
• 关键词: Incorporating; new; dynamic; structures; ultrasonic

A research effort is underway to integrate miniaturised ultrasonic surgical devices with surgical robots for minimally invasive surgeries. Current ultrasonic devices consist of a transducer, waveguide and surgical tip and incorporate long waveguides for minimally invasive surgeries. This means that the surgical tip can only be delivered along a straight path and the devices cannot be integrated with flexible robots. However, a very small ultrasonic device contains only a small volume of the excitation material, which is piezoelectric. This limits the achievable vibrational amplitude and so it is necessary to explore new dynamic structures that can enhance the vibrational motion of the surgical tip in a small sized device.Currently, the incorporation of internal structures in the transducers and waveguides of ultrasonic surgical devices is limited by the capabilities of subtractive manufacturing technologies. Internal features that can enhance the dynamic response are a potential enabler for miniaturising ultrasonic surgical devices, because miniaturisation requires the excitation of a displacement amplitude at the surgical tip that is consistent with much larger devices, but with a much smaller volume of piezoelectric material. This study will therefore investigate the use of 3D printing technologies for the manufacture of the titanium alloy (Ti-6Al4V) parts of the transducer and surgical tip. The study will consider potential internal dynamic structures that can only be manufactured using 3D printing technologies and will investigate a range of internal void patterns and reticulated structures to deliver enhanced vibrational performance.

目前正在进行一项研究，将微型超声手术设备与手术机器人结合起来进行微创手术。目前的超声设备由换能器、波导和手术尖端组成，并结合了用于微创手术的长波导。这意味着手术尖端只能沿着直线路径输送，并且设备不能与柔性机器人集成。然而，非常小的超声波装置仅包含小体积的激励材料，该激励材料是压电的。这限制了可实现的振动幅度，因此有必要探索新的动态结构，可以增强小尺寸器械中手术尖端的振动运动。目前，在超声手术器械的换能器和波导中引入内部结构受到减材制造技术能力的限制。可以增强动态响应的内部特征是超声外科器械振动的潜在推动因素，因为振动需要在外科尖端处激励位移幅度，这与大得多的器械一致，但压电材料的体积小得多。因此，本研究将研究使用3D打印技术制造探头和手术头端的钛合金（Ti-6Al 4V）部件。该研究将考虑只能使用3D打印技术制造的潜在内部动态结构，并将研究一系列内部空隙模式和网状结构，以提供增强的振动性能。