HomeE-mailрусская версия
Self-fastening surgical thread

September 14, 2002
In endoscopic surgery, it is not easy to properly suture through a small hole.

Modern medicine aims at maximally localized operative treatment, if such treatment is necessary at all. In endoscopic surgery, operations are performed through small holes. Under such conditions, it is very difficult to suture because knots may appear either too tight or too loose. What kind of threads would surgeons like to have? Ideally, threads must be able to fasten themselves.

The threads invented at the Massachusetts Institute of Technology are just tailored for this job. They are made from a shape-memory thermoplast. The resource providing necessary heating for regaining the shape is the human body's heat. The threads are stretched in advance and after suturing they contract thereby fastening the edges. The thread material dissolves in the body with time.

The physical effect of shape memory and the available resource of the human body's heat is employed here.


Information source: http://lenta.ru/health/2002/04/29/shvi .
 

The second TRIZ formula / Seminar of TRIZ practitioners (TRIZ Colloquium #2) / Seminar of TRIZ practitioners (TRIZ Colloquium #1) / Evolution of Soil Cultivation Methods / Nari, nari, genari... / TRIZ in a Bi-system with Lean Sigma / Using “Value-Engineering Analysis + TRIZ” method for improoving the stripping grain-harvesting machine / Disaster in the Gulf of Mexico (Continuation) / Disaster in the Gulf of Mexico / TRIZ in the World of Science Where Does It Fit? / Аlgorithm of work on production inventive projects / History of Gallic Reaper / Emotional Toyota / Stretch jogging shoes / Transfer to the microlevel as one of the main display evolution trends  / Transformation of structurally similar elements of technical system / “Bronze Horseman” / TRIZ-Principles for Art-Composition / Man and Technical System (part II) / Motor boat-fisher
Evolution / Ideas / Old and new tales / Solved problems / Tools and methods
Algorithm of problem solving / Altshuller's principles / Contradiction / Evolution tree / Ideal final result / Physical effects / Resources / ...
Automobile / Display / Medicine / Pleasant trifles / Safety / Special property materials / Usability / ...
TRIZ survey seminar / Forecasting as a business management method / Patent circumventing technology

Copyright © 2002-2019 «Generator»
Authors: Nikolay Shpakovsky, Elena Novitskaya