A Locomotion Driving of the Capsule Robot in Intestinal Tract

2014 ◽  
pp. 438-445
Author(s):  
Zhou Hongfu
Keyword(s):  
Intestinal Tract ◽  
Capsule Robot

Design of a Legged and Clamper-Based Capsule Robot with Active Locomotion Function

2020 ◽  
Author(s):  
Fan Zhang ◽  
Dongxu Ye ◽  
Shuang Song
Keyword(s):  
Large Intestine ◽  
Kinematic Analysis ◽  
Intestinal Tract ◽  
Intestinal Wall ◽  
Structure Design ◽  
Experimental Results ◽  
Force Analysis ◽  
Capsule Robot ◽  
Transparent Tube ◽  
Active Locomotion

Abstract This paper presents a legged and clamper-based capsule robot with active locomotion function. The capsule robot (CR) utilizes the extension and contraction of the anchoring legs to expand the collapsed intestinal wall, crawl in the intestinal tract, and stand in large spaces such as the stomach and large intestine organs. The mechanical structure design, kinematic analysis, principle of locomotion and force analysis of the CR are presented. The design concept and locomotion principles of the proposed CR are verified by a prototype with the diameter of 13 mm and length of 39 mm. Three experiments were conducted to test the locomotion performance of the proposed CR. In the experiments, the prototype successfully expands the collapsed phantom intestine, stands on the plane and moves forward in transparent tube at a promising speed. Experimental results indicate that the CR has good locomotion capabilities.

Design, analysis, and testing of a motor-driven capsule robot based on a sliding clamper

Robotica ◽  
2015 ◽  
Vol 35 (3) ◽  
pp. 521-536 ◽  
Author(s):  
Jinyang Gao ◽  
Guozheng Yan ◽  
Su He ◽  
Fei Xu ◽  
Zhiwu Wang
Keyword(s):  
Intestinal Tract ◽  
Power Transmission ◽  
Ex Vivo ◽  
Near Field ◽  
Three Dimensional ◽  
Time Frame ◽  
Linear Motion ◽  
Wireless Power ◽  
Capsule Robot ◽  
Standard Colonoscopy

SUMMARYWe propose a motor-driven capsule robot based on a sliding clamper (MCRSC), a device to explore the partially collapsed and winding intestinal tract. The MCRSC is powered by wireless power transmission based on near-field inductive coupling. It comprises a novel locomotion unit, a camera, and a three-dimensional receiving coil, all installed at both ends of the locomotion unit. The novel locomotion unit comprises a linear motion mechanism and a sliding clamper. The former adopts a pair of lead-screw and nut to obtain linear motion, whereas the latter anchors the MCRSC to a specific point of the intestinal tract by expanding its arc-shaped legs. The MCRSC is capable of two-way locomotion, which is activated by alternately executing linear motion and anchoring action. Ex vivo experiments have shown that the MCRSC is able to inspect the colon within a time frame of standard colonoscopy.

Electron Microscopic Detection and Characterization of Nonhuman Primate Enteric Viruses

1982 ◽  
Vol 40 ◽  
pp. 306-307
Author(s):  
G. C. Smith ◽  
R. L. Heberling ◽  
S. S. Kalter
Keyword(s):  
Electron Microscopy ◽  
Animal Model ◽  
Nonhuman Primate ◽  
Clinical Condition ◽  
Intestinal Tract ◽  
Enteric Viruses ◽  
Electron Microscopic ◽  
Microscopic Detection

A number of viral agents are recognized as and suspected of causing the clinical condition “gastroenteritis.” In our attempts to establish an animal model for studies of this entity, we have been examining the nonhuman primate to ascertain what viruses may be found in the intestinal tract of “normal” animals as well as animals with diarrhea. Several virus types including coronavirus, adenovirus, herpesvirus, and picornavirus (Table I) were detected in our colony; however, rotavirus, astrovirus, and calicivirus have not yet been observed. Fecal specimens were prepared for electron microscopy by procedures reported previously.

Activation of isolated heterophils from chicks stimulated in vivo with salmonella enteritidis-immune lymphokines

1996 ◽  
Vol 54 ◽  
pp. 760-761
Author(s):  
R. B. Moyes ◽  
R. E. Droleskey ◽  
M. H. Kogut ◽  
J. R. DeLoach
Keyword(s):  
Lamina Propria ◽  
Intestinal Mucosa ◽  
Salmonella Enteritidis ◽  
Intestinal Tract ◽  
Polymorphonuclear Cells ◽  
Subclinical Infection ◽  
Egg Products ◽  
Immune Lymphokines ◽  
Organ Invasion

Salmonella enteritidis (SE) is of great concern to the poultry industry due to the organism's ability to penetrate the intestinal mucosa of the laying hen and subsequently colonize the ovaries and yolk membrane. The resultant subclinical infection can lead to SE infection of raw eggs and egg products. Interference with the ability of the organism to invade has been linked to the activation and recruitment of inflammatory polymorphonuclear cells, heterophils, to the lamina propria of the intestinal tract.Recently it has been established that heterophil activation and increased resistance to SE organ invasion can be accomplished by the administration of SE-immune lymphokines (SE-ILK) obtained from supernatants of concanavalin-A stimulated SE immune T lymphocytes from SE hyperimmunized hens. Invasion of SE into the lamina propria provides a secondary signal for directing activated heterophils to the site of SE invasion.

Leiomyosarcoma of the Intestinal Tract

1957 ◽  
Vol 32 (6) ◽  
pp. 1162-1171 ◽  
Author(s):  
Calvin L. Rumbaugh ◽  
Henry A. Teloh
Keyword(s):  
Intestinal Tract
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