uno colorline single-use trocar systems designed by hattenbach and nikolic
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Perfect handling in 20, 23 and 25 Gauge
- BIOFLEX TUBES: Ductile port tubes and precise trocars for excellent wound closure; gentle to tissue
- MEMBRANE LOCK PORTS: Closed system but still not unobstructed use for soft-tip instruments
- ANTI-SLIDE DESIGN: No "slipping out" during surgery due to textured surface of the material
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All trocars are available:
- One-step or two-step
- Inclusive three ports and infusion cannula
Self-Sealing Transconjuctival Incision for 20, 23, and 25 Gauge Pars-Plana Vitrectomy
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Professor Hattenbach's Screw-Cut Technique
Picture 1) Move the conjunctiva aside and the fixate the bulbous with a pair of conjunctiva forceps (G-18847) and mark 3.75 mm with a pair of calipers (G-19130).
Picture 2) At an angle of 10°, first pierce the eye to a depth of 0.3 mm parallel to the limbus in the direction of the posterior. Then slightly turn the trocar in its longitudinal axis in the direction of the limbus.
Picture 3) Now slowly guide the scleral tunnel in a curve-like movement toward the center of the vitreous. The final position when penetrating through the scleral should be toward the center of the eye, the preferred position for the instruments.
Picture 4) Fixate the trocar with a pair of trocar forceps (G-37430) and then remove the lance.
Picture 5) Pull the trocars with a pair of trocar forceps. Cover the ports on the other side with a finger and slightly press the incision with a blunt instrument (e.g. swab). Do not press too hard.
To test the impermeability of the scleratomy, increase the infusion pressure from 25 to 40 mmHg. BSS or gas can be injected over the last port using a 30 G needle.
Picture 2) At an angle of 10°, first pierce the eye to a depth of 0.3 mm parallel to the limbus in the direction of the posterior. Then slightly turn the trocar in its longitudinal axis in the direction of the limbus.
Picture 3) Now slowly guide the scleral tunnel in a curve-like movement toward the center of the vitreous. The final position when penetrating through the scleral should be toward the center of the eye, the preferred position for the instruments.
Picture 4) Fixate the trocar with a pair of trocar forceps (G-37430) and then remove the lance.
Picture 5) Pull the trocars with a pair of trocar forceps. Cover the ports on the other side with a finger and slightly press the incision with a blunt instrument (e.g. swab). Do not press too hard.
To test the impermeability of the scleratomy, increase the infusion pressure from 25 to 40 mmHg. BSS or gas can be injected over the last port using a 30 G needle.
product brochure (3067kB)