|Year : 2018 | Volume
| Issue : 2 | Page : 110-114
Novel robotic systems and future directions
Ki Don Chang1, Ali Abdel Raheem2, Koon Ho Rha3
1 Department of Urology, Yonsei University Wonju College of Medicine, Wonju, Korea
2 Department of Urology, Tanta University Medical School, Tanta, Egypt
3 Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
|Date of Web Publication||2-Apr-2018|
Ki Don Chang
Department of Urology, Yonsei University Wonju College of Medicine, Wonju
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Robot-assistance is increasingly used in surgical practice. We performed a nonsystematic literature review using PubMed/MEDLINE and Google for robotic surgical systems and compiled information on their current status. We also used this information to predict future about the direction of robotic systems based on various robotic systems currently being developed. Currently, various modifications are being made in the consoles, robotic arms, cameras, handles and instruments, and other specific functions (haptic feedback and eye tracking) that make up the robotic surgery system. In addition, research for automated surgery is actively being carried out. The development of future robots will be directed to decrease the number of incisions and improve precision. With the advent of artificial intelligence, a more practical form of robotic surgery system can be introduced and will ultimately lead to the development of automated robotic surgery system.
|How to cite this article:|
Chang KD, Raheem AA, Rha KH. Novel robotic systems and future directions. Indian J Urol 2018;34:110-4
| Introduction|| |
Since the introduction of the da Vinci ™ surgical system (Intuitive Surgical Inc., Mountain View, CA, USA), more sophisticated surgery has been achieved with improved three-dimensional (3D) visual acuity, 7 degrees of freedom, breakthrough accuracy, and accessibility to surgery. Robot-assisted laparoscopic radical prostatectomy was pioneered in 2001. After the approval of the US Food and Drug Administration (FDA), four generations of the da Vinci system have been introduced over the past 17 years.,,, In 2016, da Vinci installations increased by more than 25%, mainly in urology and gynecology. Several manufacturers are developing alternate robotic systems [Figure 1]. However, due to issues related to patents, clinical deployments are limited ,, Nevertheless, the era of robotic surgery is expected to rapidly evolve as new technologies become available soon. The aim of the present study is to provide a comprehensive overview of the current state of robotic surgery and to predict the future of the surgical robot system based on the current status.
|Figure 1: Revo-i: It consists of a surgeon control console, a four-arm robotic operation cart, a high-definition vision cart, and reusable endoscopic instruments|
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| Methodology|| |
A comprehensive literature review was performed using the PubMed electronic search engine. The following search terms were used: “da Vinci” (n = 4308), “robotic surgical system” (n = 2051), and “new robotic surgical device” (n = 760). The references of related papers were used, and the articles and information were searched by Google search engine (www.google.com).
da Vinci surgical system
According to ISRG's stock report, Intuitive Surgical has maintained its market leader position for over 17 years. Historically, an updated model is launched approximately every 6 years [Figure 2]. Of the 3919 da Vinci systems installed worldwide at the end of 2016, 63% were in the US, 15% in Europe, 18% were in Asia, and 4% were in the rest of the world [Figure 3].
Future of da Vinci
According to the Intuitive Surgical Investor Presentation in 2017, they have focused on three aims for technical advances; first, “enhanced imaging” which can help surgeons and staff overcome the limitations of the human eye [Figure 4]a; second, “intelligent systems” which can provide to surgeons a real-time feedback [Figure 4]b; and third, “less invasive approaches to the body” [Figure 4]c and [Figure 4]d. They are expected to launch da Vinci X surgical system which is optimized for focused-quadrant surgery for procedures and can incorporate da Vinci Xi endoscope technology, instruments, and accessories in 2017 [Figure 5]. The expected launch of the da Vinci SP will also ignite a new product update cycle [Figure 4]d.
|Figure 4: (a) Enhanced imaging which can help surgeons and staff overcome the limitations of the human eye. (b) Intelligent systems which can provide to surgeons a real-time feedback. (c) Less invasive approaches to the body: da Vinci SP surgical system. (d) Less invasive approaches to the body: Flexible catheter-based system|
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|Figure 5: Da Vinci X surgical system: This system is optimized for focused-quadrant surgery for procedures|
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New surgical system on the Horizon
The Revo-i (Meere Company Inc., Yongin, Republic of Korea) consists of a surgeon control console, a four-arm robotic operation cart, a high-definition vision cart, and reusable endoscopic instruments [Figure 1]. The basic configuration and development of this model is designed to be similar to da Vinci systems. A preclinical study with porcine model was completed in 2016. Moreover, the clinical trial in treating patients with radical cholecystectomy or prostatectomy was performed using this surgical system in 2017. The manufacturers obtained a commercialized approval of Korean FDA in August 2017 and new model of Revo-i ® surgical system is expected to be launched.
The multiport surgical robotic ALF-X system (SORAR SpA, Milan, Italy) was initially introduced for gynecological surgery and was recently assessed in a preclinical animal study of robot-assisted partial nephrectomy , Fanfani et al. reported that they performed 80 cases of hysterectomy with ALF-X system for benign and malignant disease, from October 2013 to May 2014. They also reported that they performed partial nephrectomy with ALF-X system on pig models. Unlike the da Vinci system, each arm of this device can be positioned independently from the others on the surgical field. The system's unique features also include haptic feedback and an eye-tracking system. Haptic feedback is achieved by counter movements of the laparoscopic handle at the console according to force and direction applied at the tip of the instrument. The eye-tracking system controls camera movements; for example, the image is zoomed in when the surgeon's head approaches the screen.
Micro Hand S
This device consists of a surgeon console and a slave cart which is similar to the da Vinci surgical robot. The first clinical trials were reported in 2014 including one patient with gastric perforation and two patients with acute appendicitis.
Upcoming robotic systems: ongoing projects
The Medrobotics ® (Raynham, MA, USA) received the US FDA clearance for the Flex robotic system in July 2015. The Flex robotic system provides surgeons with single-site access visualization of hard-to-reach anatomical locations. Remacle et al. reported the first surgical application of the Medrobotics Flex system on humans, by performing three procedures of transoral robotic surgery. Titan Medical (Toronto, ON, Canada), a public company, has developed the Single Port Orifice Robotic Technology (SPORT ™ Surgical system). The system utilizes a 25 mm single-access port that contains two articulating instruments and a 3D high-definition camera. The Versius system (Cambridge Medical Robotics) has arms that are small and light enough to be moved around an operating table as a surgeon pleases. The arm, built like a human arm, has three joints, corresponding to the shoulder, the elbow and the wrist.
| Discussion|| |
The da Vinci robotic surgical system developed by Intuitive Surgery for the past 17 years has dominated the robotic surgery market. The surgeons saw the image through the lens of the camera, and the operation was carried out according to the control performed at the console. The competing robot that has been developed does not seem to deviate much from the concept of the basic da Vinci robotic surgical system. However, they are continuing their efforts to evolve into a better surgical robot system than existing ones. For example, the da Vinci system provides excellent 3D visualization of the surgical site and improved dexterity, but it lacks haptic force feedback and subsurface tissue visualization. Laparoscopic or robotic surgery has the disadvantage of not having haptic sense, but this is overcome by the surgeon's experience, by looking at the tissue, whether it is hard or soft. Engineers are trying to introduce haptic technology into robot systems, but the technology is limited at this time. These limitations make the introduction more difficult., There are also many reports of image guidance using navigation technologies and applying to neurosurgery or spinal surgery., However, it is not yet applied to clinical urologic robot surgery. In the closed console of da Vinci system, surgeon's situational awareness can be compromised. To overcome this disadvantage, there are some trials for using 3D glasses or 3D high-definition monitor ,, Rassweiler etal. in the “Future of robotic surgery in urology” presented their prediction of the specific development and evolution of technology based on the current technology advances and patent status. For example, the first automobile has vastly evolved to the high tech ones we drive now a day. Furthermore, autonomous cars have recently been advertised and there is promise of an intelligent automobile that drives itself. As such, the robotic surgery system is expected to ultimately follow the automobile model and will evolve onto the automated surgery system. Technically speaking, automated surgery is no more difficult than automatic driving. Because there are no sudden emergency situations such as protruding vehicle or person during driving, once artificial intelligence (AI) acquires the anatomical understanding and the surgical technique, technically automated surgery can be performed. In addition, in more recent years, attempts to learn internal organs through deep learning have been published in various studies, and there are reports that it is possible to learn in the initial stage. Furthermore, if videos of surgical procedures are taught, surgical techniques can be taught to AI, and related studies are underway. An automated surgical robot known as the Smart Tissue Autonomous Robot has proven to be capable of performing some surgical procedures on pigs, such as sewing tissue., The machine operates on its own but is currently being used under designer's supervision. It is designed to perform work within a predictable range, rather than full-scale operations on its own, and is nearing availability for human testing. This machine showed to cut three pig's tissues (skin, fat, and muscle) which are attached markers along the markers automatically in 2017. They showed accurate resection lenses and could suggest that this could be beneficial in tumor resection. Currently, studies are underway to analyze surgeons' performance using a tool of “dVLogger” and to predict efficiency., Based on this, robots can facilitate the performance of surgeons and potentially result in less inadvertent complications and improved outcomes. In addition, the robots that have learned the videos of surgery performed by expert surgeons can also play a role of navigator. It can be used as a guide to the novice surgeon during surgery. However, not only technical barriers but also other barriers such as ethical dilemmas will become issues. Even if AI is technically feasible for surgery, safety must be ensured should any unexpected or inadvertent problem arise. Since it is not possible to conduct experiments on humans without extra cautionary measures, priority will be given to application to animals. However, the question of whether the patient will accept it is another matter. We are on the verge of preparing a second-generation robotic surgery system. This will be the time when not only technical issues but also social issues need to be coordinated and addressed. Obviously, the robotic surgery system will continue to evolve and the surgeon will have to continue to adapt.
| Conclusions|| |
In the near future, robots will be developed in a way that the number of incisions is less with high precision. A more efficient system will be introduced with greater applicability with more diverse devices while ensuring patient safety. With the advent of AI between the robotic system and the surgeon, a more efficiently functional form of robotic surgery system could be introduced and ultimately the development type will go to an automated robot surgery system.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5]
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