提出MEDiC框架,让手术机器人自动优化视野与组织张力。
MEDiC: Autonomous Surgical Robotic Assistance to Maximizing Exposure for Dissection and Cautery
- 用可微物理模型结合视觉反馈控制
- 在真实动物组织上实现稳定暴露与张力调节
- 适合微创手术自动化研究者参考
手术自动化有望提升患者治疗的一致性,并扩大资源匮乏地区对先进外科护理的可及性。共享自主模式下,机器人执行常规子任务,外科医生保留部分远程操控权,具有巨大应用潜力。本文聚焦于手术共享自主中一项关键技能:自动化机器人辅助以最大化组织暴露并施加张力用于解剖和电凝。确保持续清晰的术野对效率与患者安全至关重要,但因处理复杂可变形体积组织而极具挑战。为此,我们提出 extit{MEDiC}框架,集成可微物理模型与感知反馈,实现两大目标:1)通过视觉伺服控制最大化特定解剖区域的组织暴露并施加张力;2)基于可变形雅可比分析选择最优控制位置。我们在组织仿体上进行多次真实机器人实验进行定量评估,并在真实动物组织上通过共享自主模式展示其解剖能力。
原文摘要 · Abstract (English)
Surgical automation has the capability to improve the consistency of patient outcomes and broaden access to advanced surgical care in underprivileged communities. Shared autonomy, where the robot automates routine subtasks while the surgeon retains partial teleoperative control, offers great potential to make an impact. In this paper we focus on one important skill within surgical shared autonomy: Automating robotic assistance to maximize visual exposure and apply tissue tension for dissection and cautery. Ensuring consistent exposure to visualize the surgical site is crucial for both efficiency and patient safety. However, achieving this is highly challenging due to the complexities of manipulating deformable volumetric tissues that are prevalent in surgery.To address these challenges we propose \methodname, a framework for autonomous surgical robotic assistance to \methodfullname. We integrate a differentiable physics model with perceptual feedback to achieve our two key objectives: 1) Maximizing tissue exposure and applying tension for a specified dissection site through visual-servoing conrol and 2) Selecting optimal control positions for a dissection target based on deformable Jacobian analysis. We quantitatively assess our method through repeated real robot experiments on a tissue phantom, and showcase its capabilities through dissection experiments using shared autonomy on real animal tissue.
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