Abstract
A miniaturized grasping tool was designed and fabricated for use in ophthalmic procedures. The grasping travel range was optimized to have a 2-4 mm jaw spacing in the open position which is a requirement for ophthalmic surgery. Design optimization approaches were utilized to design a grasper which can tolerate large displacements without fracture. The device was fabricated using the UV-LIGA technique using SU-8 photoresist as a molding template. After the device was fabricated it was integrated with a 20-gauge cylindrical package which guides the device's movement. The packaging tube is used to manipulate the device. In the device's natural position the jaws remain open. As the device is pulled through the tube, the tube's wall forces the jaws closed for a grasping motion. The pull-off force of the micrograpser during grasping motion was measured and the value is comparable value to that of a commercial micrograpser developed by Alcon Manufacturing Ltd. using traditional fabrication techniques. A microcutter was also developed by substituting the grasping jaws of the micrograsper with sharp blades. Ex vivo tests were further conducted in order to evaluate the performance of the miniaturized instruments for manipulating and cutting objects similar to those encountered during an ophthalmic procedure.
| Original language | English (US) |
|---|---|
| Article number | IMECE2004-61587 |
| Pages (from-to) | 159-164 |
| Number of pages | 6 |
| Journal | Advances in Bioengineering, BED |
| State | Published - Jan 1 2004 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Design and fabrication of a UV-LIGA compliant micrograsper for ophthalmic surgery. / Yang, Ming; Culkar, Kristin M.; Powell, Katherine; Frecker, Mary I.; Zahn, Jeffrey D.
In: Advances in Bioengineering, BED, 01.01.2004, p. 159-164.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Design and fabrication of a UV-LIGA compliant micrograsper for ophthalmic surgery
AU - Yang, Ming
AU - Culkar, Kristin M.
AU - Powell, Katherine
AU - Frecker, Mary I.
AU - Zahn, Jeffrey D.
PY - 2004/1/1
Y1 - 2004/1/1
N2 - A miniaturized grasping tool was designed and fabricated for use in ophthalmic procedures. The grasping travel range was optimized to have a 2-4 mm jaw spacing in the open position which is a requirement for ophthalmic surgery. Design optimization approaches were utilized to design a grasper which can tolerate large displacements without fracture. The device was fabricated using the UV-LIGA technique using SU-8 photoresist as a molding template. After the device was fabricated it was integrated with a 20-gauge cylindrical package which guides the device's movement. The packaging tube is used to manipulate the device. In the device's natural position the jaws remain open. As the device is pulled through the tube, the tube's wall forces the jaws closed for a grasping motion. The pull-off force of the micrograpser during grasping motion was measured and the value is comparable value to that of a commercial micrograpser developed by Alcon Manufacturing Ltd. using traditional fabrication techniques. A microcutter was also developed by substituting the grasping jaws of the micrograsper with sharp blades. Ex vivo tests were further conducted in order to evaluate the performance of the miniaturized instruments for manipulating and cutting objects similar to those encountered during an ophthalmic procedure.
AB - A miniaturized grasping tool was designed and fabricated for use in ophthalmic procedures. The grasping travel range was optimized to have a 2-4 mm jaw spacing in the open position which is a requirement for ophthalmic surgery. Design optimization approaches were utilized to design a grasper which can tolerate large displacements without fracture. The device was fabricated using the UV-LIGA technique using SU-8 photoresist as a molding template. After the device was fabricated it was integrated with a 20-gauge cylindrical package which guides the device's movement. The packaging tube is used to manipulate the device. In the device's natural position the jaws remain open. As the device is pulled through the tube, the tube's wall forces the jaws closed for a grasping motion. The pull-off force of the micrograpser during grasping motion was measured and the value is comparable value to that of a commercial micrograpser developed by Alcon Manufacturing Ltd. using traditional fabrication techniques. A microcutter was also developed by substituting the grasping jaws of the micrograsper with sharp blades. Ex vivo tests were further conducted in order to evaluate the performance of the miniaturized instruments for manipulating and cutting objects similar to those encountered during an ophthalmic procedure.
UR - http://www.scopus.com/inward/record.url?scp=20444490336&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=20444490336&partnerID=8YFLogxK
M3 - Conference article
SP - 159
EP - 164
JO - Advances in Bioengineering
JF - Advances in Bioengineering
SN - 0360-9960
M1 - IMECE2004-61587
ER -