scholarly journals Improving tactile sensation in laparoscopic surgery by overcoming size restrictions

2015 ◽  
Vol 1 (1) ◽  
pp. 135-139
Author(s):  
C. Wiederer ◽  
M. Fröhlich ◽  
M.W. Strohmayr
Keyword(s):  
Laparoscopic Surgery ◽  
Liver Surgery ◽  
Open Surgery ◽  
Abdominal Cavity ◽  
Tactile Sensation ◽  
Hepatic Tumors ◽  
Laparoscopic Liver Surgery ◽  
Manual Palpation ◽  
Sense Of Touch ◽  
Human Sense

Abstract Hepatic tumors appear as stiff inclusions within the surrounding soft, healthy tissue. In open surgery they are searched for by manual palpation with the gloved fingertip. However, to exploit the benefits of MIS it is mandatory to implement a substitution for the human sense of touch. Therefore, a tactile instrument has been developed with the aim of enlarging the sensing area at the tool tip once it enters the abdominal cavity through the trocar. The provision of a large sensitive surface enables the detection of nearly all sizes of tumors and decreases the time needed for the performance of this task. A prototype was manufactured by laser sintering in PA serving as a carrier for an existing flexible silicone sensor. Automated as well as manual subject palpation tests have shown that a prototypical instrument with a laterally opening lid would be a suitable device for tumor detection in laparoscopic liver surgery.

Haptic Rendering for Laparoscopic Surgery Simulation & Related Studies

2008 ◽  
pp. 636-645 ◽  
Author(s):  
Ryan McColl ◽  
Ian Brown ◽  
Cory Seligman ◽  
Fabian Lim ◽  
Amer Alsaraira
Keyword(s):  
Laparoscopic Surgery ◽  
Visual Feedback ◽  
Haptic Feedback ◽  
Sensory System ◽  
Vital Role ◽  
Tissue Manipulation ◽  
Anatomical Objects ◽  
Surgery Simulator ◽  
Sense Of Touch ◽  
Human Sense

This project concerns the application of haptic feedback to a virtual reality laparoscopic surgery simulator. It investigates the hardware required to display haptic forces, and the software required to generate realistic and stable haptic properties. A number of surgery-based studies are undertaken using the developed haptic device. The human sense of touch, or haptic sensory system, is investigated in the context of laparoscopic surgery, where the long laparoscopic instruments reduce haptic sensation. Nonetheless, the sense of touch plays a vital role in navigation, palpation, cutting, tissue manipulation, and pathology detection in surgery. The overall haptic effect has been decomposed into a finite number of haptic attributes. The haptic attributes of mass, friction, stiction, elasticity, and viscosity are individually modeled, validated, and applied to virtual anatomical objects in visual simulations. There are times in surgery when the view from the camera cannot be depended upon. When visual feedback is impeded, haptic feedback must be relied upon more by the surgeon. A realistic simulator should include some sort of visual impedance. Results from a simple tissue holding task suggested the inclusion of haptic feedback in a simulator aids the user when visual feedback is impeded.

scholarly journals LAPAROSCOPIC LIVER RESECTION VIA LAPAROSCOPY: EXPERIENCE IN OUR CENTRE

2021 ◽  
Vol 108 (Supplement_3) ◽  
Author(s):  
P del Val Ruiz ◽  
S Sanz Navarro ◽  
B Carrasco Aguilera ◽  
C García Bernardo ◽  
A Miyar de Leon ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Liver Surgery ◽  
Open Surgery ◽  
Cancer Metastasis ◽  
Initial Experience ◽  
Specific Training ◽  
Laparoscopic Liver Surgery ◽  
Conversion To Open Surgery ◽  
Colon Cancer Metastasis ◽  
The Mean

Abstract INTRODUCTION Laparoscopic liver surgery has undergone a great evolution in recent years, allowing increasingly complex resections without increasing complications and with evident postoperative benefits. Our purpose is to analyze our initial experience in this type of resection. MATERIAL AND METHODS We performed a retrospective observational study analyzing 41 patients who underwent liver resections by laparoscopy in our centre from March 2019 to January 2020. RESULTS The mean age of the patients was 64.5 years (SD 11) with a mean BMI of 27.56 (from 4.59). The most common surgical indication was colon cancer metastasis (41.4%), followed by hepatocarcinoma (36.6%) and usually single lesions (75.6%). The procedure passed without complications except in the case of 5 patients who required conversion to open surgery (12.5%) and 3 patients (7.5%) who required intraoperative transfusion. During the postoperative period 4 patients (9.8%) presented complications and all of them were classified as Clavien-Dindo II. We only reported 1 death (2.4%) in > 90 days, which was not related to the reason for surgery. No reinterventions were necessary during admission and there were no readmissions in the first 30 days after discharge, CONCLUSIONS Laparoscopic liver surgery is technically demanding and requires previous experience in open surgery, as well as specific training, which makes a regulated implementation of the technique necessary.

scholarly journals Laparoscopic surgery produced less surgical smoke and contamination comparing with open surgery: the pilot study in fresh cadaveric experiment in COVID-19 pandemic

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Voraboot Taweerutchana ◽  
Tharathorn Suwatthanarak ◽  
Asada Methasate ◽  
Thawatchai Akaraviputh ◽  
Jirawat Swangsri ◽  
...  
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
Laparoscopic Surgery ◽  
Laparoscopic Appendectomy ◽  
Open Surgery ◽  
Open Cholecystectomy ◽  
Abdominal Cavity ◽  
Particle Sizes ◽  
Open Approach ◽  
Surgical Smoke ◽  
Surgical Field

Abstract Background The SARS-CoV2 virus has been identified in abdominal cavity of the COVID-19 patients. Therefore, the potential viral transmission from any surgical created smoke in these patients is of concern especially in laparoscopic surgery. This study aimed to compare the amount of surgical smoke and surgical field contamination between laparoscopic and open surgery in fresh cadavers. Methods Cholecystectomy in 12 cadavers was performed and they were divided into 4 groups: laparoscopic approach with or without smoke evacuator, and open approach with or without smoke evacuator. The increased particle counts in surgical smoke of each group were analyzed. In the model of appendectomy, surgical field contamination under ultraviolet light and visual contamination scale between laparoscopic and open approach were compared. Results Open cholecystectomy significantly produced a greater amount of overall particle sizes, particle sizes < 5 μm and particle sizes ≥ 5 μm than laparoscopic cholecystectomy (10,307 × 103 vs 3738 × 103, 10,226 × 103 vs 3685 × 103 and 81 × 103 vs 53 × 103 count/m3, respectively at p < 0.05). The use of smoke evacuator led to decrease in the amount of overall particle sizes of 58% and 32.4% in the open and laparoscopic chelecystectomy respectively. Median (interquatile range) visual contamination scale of surgical field in open appendectomy [3.50 (2.33, 4.67)] was significantly greater than laparoscopic appendectomy [1.50 (0.67, 2.33)] at p < 0.001. Conclusions Laparoscopic cholecystectomy yielded less smoke-related particles than open cholecystectomy. The use of smoke evacuator, abeit non-significantly, reduced the particles in both open and laparoscopic cholecystectomy. Laparoscopic appendectomy had a lower degree of surgical field contamination than the open approach.

Is Single-Incision Laparoscopic Liver Surgery Safe and Efficient for the Treatment of Malignant Hepatic Tumors? A Systematic Review

2019 ◽  
Vol 51 (2) ◽  
pp. 425-432 ◽  
Author(s):  
Nikolaos Machairas ◽  
Dimitrios Papaconstantinou ◽  
Apostolos Gaitanidis ◽  
Natasha Hasemaki ◽  
Anna Paspala ◽  
...  
Keyword(s):  
Systematic Review ◽  
Liver Surgery ◽  
Single Incision ◽  
Hepatic Tumors ◽  
Laparoscopic Liver Surgery

scholarly journals Two cases of giant peritoneal inclusion cysts requiring treatment after total laparoscopic hysterectomy

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Katsumi Kozasa ◽  
Yuki Takemoto ◽  
Takeshi Goto ◽  
Mariya Kobayashi ◽  
Hitomi Sakaguchi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Abdominal Pain ◽  
Laparoscopic Surgery ◽  
Open Surgery ◽  
Abdominal Cavity ◽  
Laparoscopic Hysterectomy ◽  
Total Laparoscopic Hysterectomy ◽  
Strong Adhesion

Abstract Peritoneal inclusion cysts (PICs) often develop in post-operative patients. Since the incidence of adhesions is lower with laparoscopic surgery than with open surgery, PICs are less likely to occur in the former. Although post-operative adhesions or PICs rarely develop after laparoscopic surgery (such as total laparoscopic hysterectomy: TLH), we encountered two cases of giant PICs with abdominal pain after TLH. In Case 1, strong adhesion was already present when TLH was performed. Therefore, this case may have been predisposed to the development of adhesions in the abdominal cavity. However, no adhesions were observed during TLH in case 2, and there were no risk factors, such as pre-operative adhesions and endometriosis. Therefore, adhesions and PICs may develop even after TLH, and approaches need to be considered for their prevention.

The value of laparoscopic liver surgery for solid benign hepatic tumors

2007 ◽  
Vol 22 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Roberto Troisi ◽  
Roberto Montalti ◽  
Peter Smeets ◽  
Jacques Van Huysse ◽  
Hans Van Vlierberghe ◽  
...  
Keyword(s):  
Liver Surgery ◽  
Hepatic Tumors ◽  
Laparoscopic Liver Surgery

FACTORS INFLUENCING THE OPERATION TECHNIQUE OF PEFORATED DUODENAL ULCER REPAIR BY SINGLEPORT LAPAROSCOPIC SURGERY

2016 ◽  
pp. 99-105
Author(s):  
Huu Tri Nguyen ◽  
Loc Le ◽  
Doàn Van Phu Nguyen ◽  
Nhu Thanh Dang ◽  
Thanh Phuc Nguyen
Keyword(s):  
Duodenal Ulcer ◽  
Laparoscopic Surgery ◽  
Correlation Coefficient ◽  
Open Surgery ◽  
Operative Time ◽  
Single Port ◽  
Time Correlation ◽  
Patch Repair ◽  
Perforated Duodenal Ulcer ◽  
Conversion To Open Surgery

Background: Single-port laparoscopic surgery (SPLS) is increasingly used in surgery and in the treatment of perforated duodenal ulcer. The aim of this study was to evaluate technical factors for perforated duodenal ulcer repair by SPLS. Methods: A prospective study on 42 consecutive patients diagnosed with perforated duodenal ulcer and treated with SPLS at Hue university of medicine and pharmacy hospital and Hue central hospital from January 2012 to February 2015. Results: The mean age was 48.1 ± 14.2 (17 - 79) years. 40 patients were treated with suture of the perforation by pure SPLS. There was one case (2.4%) in which one additional trocar was required. Conversion to open surgery was necessary in one patient (2.4%) in which the perforation was situated on the posterior duodenal wall. Two patients (4.8%) with history of abdominal surgery were successfully treated by pure SPLS. The size of perforation was correlated with suturing time (correlation coefficient r = 0.459) and operative time (correlation coefficient r = 0.528). Considering suture type, X stitches were used in 95.5% cases, simple stitches were used in one case (2.4%) while Graham patch repair technique was utilized in one case (2.4%) with large perforation. Most cases (95.1%) required only simple suture without omental patch. Peritoneal drainage was spared in most cases (90.2%). Conclusions: SPLS is a safe method for the treatment of perforated duodenal ulcer. Posterior duodenal location is the main cause of conversion to open surgery. Factor related to operative time is perforation size. Key words: perforated duodenal ulcer, single port laparoscopic repair, single port laparoscopy

scholarly journals Design and Calibration of a Force/Tactile Sensor for Dexterous Manipulation

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 966 ◽  
Author(s):  
Marco Costanzo ◽  
Giuseppe De Maria ◽  
Ciro Natale ◽  
Salvatore Pirozzi
Keyword(s):  
Experimental Validation ◽  
Sensory System ◽  
Tactile Sensor ◽  
Contact Forces ◽  
Dexterous Manipulation ◽  
Soft Contact ◽  
Grasping Force ◽  
Sense Of Touch ◽  
Human Sense ◽  
Robotic Applications

This paper presents the design and calibration of a new force/tactile sensor for robotic applications. The sensor is suitably designed to provide the robotic grasping device with a sensory system mimicking the human sense of touch, namely, a device sensitive to contact forces, object slip and object geometry. This type of perception information is of paramount importance not only in dexterous manipulation but even in simple grasping tasks, especially when objects are fragile, such that only a minimum amount of grasping force can be applied to hold the object without damaging it. Moreover, sensing only forces and not moments can be very limiting to securely grasp an object when it is grasped far from its center of gravity. Therefore, the perception of torsional moments is a key requirement of the designed sensor. Furthermore, the sensor is also the mechanical interface between the gripper and the manipulated object, therefore its design should consider also the requirements for a correct holding of the object. The most relevant of such requirements is the necessity to hold a torsional moment, therefore a soft distributed contact is necessary. The presence of a soft contact poses a number of challenges in the calibration of the sensor, and that is another contribution of this work. Experimental validation is provided in real grasping tasks with two sensors mounted on an industrial gripper.

scholarly journals Operative Time, Age, and Serum Albumin Predict Surgical Morbidity After Laparoscopic Liver Surgery

2021 ◽  
pp. 155335062199122
Author(s):  
Daniel Heise ◽  
Jan Bednarsch ◽  
Andreas Kroh ◽  
Sandra Schipper ◽  
Roman Eickhoff ◽  
...  
Keyword(s):  
Liver Resection ◽  
Liver Surgery ◽  
Postoperative Morbidity ◽  
Operative Time ◽  
Multivariable Analysis ◽  
Operation Time ◽  
Laparoscopic Liver Surgery ◽  
Surgical Morbidity ◽  
Perioperative Morbidity ◽  
Preoperative Albumin

Background. Laparoscopic liver resection (LLR) has emerged as a considerable alternative to conventional liver surgery. However, the increasing complexity of liver resection raises the incidence of postoperative complications. The aim of this study was to identify risk factors for postoperative morbidity in a monocentric cohort of patients undergoing LLR. Methods. All consecutive patients who underwent LLR between 2015 and 2019 at our institution were analyzed for associations between complications with demographics and clinical and operative characteristics by multivariable logistic regression analyses. Results. Our cohort comprised 156 patients who underwent LLR with a mean age of 60.0 ± 14.4 years. General complications and major perioperative morbidity were observed in 19.9% and 9.6% of the patients, respectively. Multivariable analysis identified age>65 years (HR = 2.56; P = .028) and operation time>180 minutes (HR = 4.44; P = .001) as significant predictors of general complications (Clavien ≥1), while albumin<4.3 g/dl (HR = 3.66; P = .033) and also operative time (HR = 23.72; P = .003) were identified as predictors of major postoperative morbidity (Clavien ≥3). Conclusion. Surgical morbidity is based on patient- (age and preoperative albumin) and procedure-related (operative time) characteristics. Careful patient selection is key to improve postoperative outcomes after LLR.

Sign in / Sign up

Export Citation Format

Share Document