Invention of a Nasolacrimal Stent Retrieval Hook.
10.3348/jkrs.1997.37.1.59
- Author:
Tae Hyung KIM
1
;
Yeong Kyun KIM
;
Sangsoo PARK
;
Ho Young SONG
Author Information
1. Department of Biomedical Engineering, Asan Medical Center, University of Ulsan College of Medicine.
- Publication Type:Original Article
- Keywords:
Lacrimal gland and duct, radiography;
Stents and prostheses
- MeSH:
Hand Strength;
Head;
Humans;
Inventions*;
Plastics;
Stainless Steel;
Stents*
- From:Journal of the Korean Radiological Society
1997;37(1):59-62
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the clinical usefulness of a nasolacrimal stent retrieval hook. MATERIALS AND METHODS:The retrieval hook consisted of two parts, a hook and pusher. The head of the hook part was made of 0.7 mm stainless steel wire and was question mark-spaped, while the body of this part was constructed by soldering together four stainless steel pipes ranging in thickness from 1.25 to 3.5 mm, serially. The pusher part was made of two plastic tubes and was designed in such a way that the hook grasped the stent tightly. The device was used to remove 46 stents in 40 patients, and tested for 1) average number of trials ; 2) success rate; and 3) average time of the procedure. RESULTS: The average number of trials, success rate, and average time taken to remove the stent was 4.7, 91%, and 1.8 minutes, respectively. CONCLUSION: In the removal of nasolacrimal stents, the retrieval hook was easy to use, useful and effective.
