Subretinal Delivery
MedOne’s Subretinal products offer a wide selection of options to customize your delivery techniques. Our PolyTip® Cannulas with 38-gauge (0.12mm) diameter tips are available in 23, 25, and 27 gauge with either a 2mm or 5 mm tip length. These are also available in an extendable version for easier passage thru valved entry cannulas. New to our subretinal products is the PolyVent™ line that combine the above features with our popular DualBore SideFlō® cannulas, providing the additional feature of pressure release in the eye during the subretinal injection.
Additionally, our unique MicroTip Cannula features an even smaller gauge tip for precise delivery into this delicate space. All of these cannulas coupled with either the MicroDose™ Injection Kit or MicroDose™ SF Injection Kit, allow use of your pneumatic air source to deliver a surgeon-controlled, safer subretinal microinjection.
MedOne endeavors to remain at the forefront of subretinal injection delivery devices. Our engineers stand ready to work with you in evaluating your specific subretinal delivery needs and developing unique solutions, prototyping, and if viable, manufacturing and marketing these products. Give us a call to discuss your ideas.
MicroDose™
MicroDose™ Injection Kit
The MicroDose™ Injection Kit can be connected to the Viscous Fluid Injection (VFI) module of the vitrectomy system. This allows full surgeon control of the subretinal injection via console foot pedal, enabling a high level of precision and control during the injection. Secure luer lock connection to any of our subretinal cannulas. One mL fluid capacity. Included tubing set can connect to Constellation®, Stellaris® and EVA® vitrectomy systems.
3275
MicroDose™ Injection Kit
MicroDose™ SF Injection Kit
The MicroDose™ SF Injection Kit offers several critical features not available on our 3275 MicroDose™. These include a silicone-free syringe to eliminate the risk of silicone droplets being introduced into the eye and a unique stopper designed to reduce dead-space to approximately 1.0 micro-liters. White print gradient marks offer enhanced readability. The syringe comes with a removable plunger rod, allowing manual filling of the syringe followed by pneumatic injection. Includes syringe cap for safe handling between loading and use.
3315
MicroDose™ SF Injection Kit
Subretinal PolyTip® Cannulas
The 38g PolyTip® Cannulas utilize an extremely thin-walled, semi-flexible tip which allows maximum flow rate in a small diameter cannula. They are rigid enough to penetrate the retina, eliminating the need to create a separate retinotomy. These products are ideal for subretinal injection. The luer lock hub allows a quick secure connection to our MicroDose™ Injection Kit, syringe, extension tube or infusion line. The 2mm green tip allows easy passage through valved entry cannulas and better visibility. The shorter tip is rigid enough to penetrate the retina, while the 5mm is more flexible.
• 3233
PolyTip® Cannula 23g/38g
23g x 28mm cannula with 38g (0.12mm) x 5mm tip
• 3254
PolyTip® Cannula 23g/38g (2mm)
23g x 28mm cannula with 38g (0.12mm) x 2mm green tip
• 3219
PolyTip® Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) x 5mm tip
• 3255
PolyTip® Cannula 25g/38g (2mm)
25g x 28mm cannula with 38g (0.12mm) x 2mm green tip
• 3259
PolyTip® Cannula 27g/38g
27g x 32mm cannula with 38g (0.12mm) x 5mm tip
• 3256
PolyTip® Cannula 27g/38g (2mm)
27g x 32mm cannula with 38g (0.12mm) x 2mm green tip
• 3233
PolyTip® Cannula 23g/38g
23g x 28mm cannula with 38g (0.12mm) x 5mm tip
• 3254
PolyTip® Cannula 23g/38g (2mm)
23g x 28mm cannula with 38g (0.12mm) x 2mm green tip
• 3219
PolyTip® Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) x 5mm tip
• 3255
PolyTip® Cannula 25g/38g (2mm)
25g x 28mm cannula with 38g (0.12mm) x 2mm green tip
• 3259
PolyTip® Cannula 27g/38g
27g x 32mm cannula with 38g (0.12mm) x 5mm tip
• 3256
PolyTip® Cannula 27g/38g (2mm)
27g x 32mm cannula with 38g (0.12mm) x 2mm green tip
Extendable PolyTip® Cannulas
The Extendable PolyTip® Cannulas feature a 38g tip that can be fully retracted for easy passage through a valved entry cannula, and then extended up to 5mm in length. Shorter tubing reduces loss of injection fluid. Priming volume is approximately 0.1mL.
• 3248
• 3247
23g x 28mm cannula with 38g (0.12mm) tip
Extendable PolyTip® Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) tip
• 3248
Extendable PolyTip® Cannula 23g/38g
23g x 28mm cannula with 38g (0.12mm) tip
• 3247
Extendable PolyTip® Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) tip
PolyVent™ Cannulas
The 38g PolyVent™ cannulas utilize the same features as our popular Subretinal PolyTip® Cannulas, however they incorporate the additional patented features of our DualBore SideFlō® cannulas, providing egress vents that allow for pressure release in the eye during the injection. This should minimize pressure on the bleb being created in the subretinal space. Additionally, the green 5mm tip provides better visualization. All of our subretinal products are flow tested during manufacturing to ensure reliable performance.
• 3306
PolyVent™ Cannula 23g/38g
23g x 28mm cannula with 38g (0.12mm) x 5mm green tip
• 3305
PolyVent™ Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) x 5mm green tip
• 3306
PolyVent™ Cannula 23g/38g
23g x 28mm cannula with 38g (0.12mm) x 5mm green tip
• 3305
PolyVent™ Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) x 5mm green tip
Extendable PolyVent™ Cannulas
The Extendable PolyVent™ Cannulas feature a green, 38g tip that can be fully retracted for easy passage through a valved entry cannula, and then extended up to 5mm in length. Small bore infusion tubing significantly reduces “dead space” to just 0.1ml, decreasing waste of injectable by 50 % versus comparable subretinal devices.
• 3308
23g x 32mm cannula with 38g (0.12mm) x 5mm, extendable green tip
• 3307
Extendable PolyVent™ Cannula 25g/38g
25g x 32mm cannula with 38g (0.12mm) x 5mm, extendable green tip
• 3308
Extendable PolyVent™ Cannula 23g/38g
23g x 32mm cannula with 38g (0.12mm) x 5mm, extendable green tip
• 3307
Extendable PolyVent™ Cannula 25g/38g
25g x 32mm cannula with 38g (0.12mm) x 5mm, extendable green tip
MicroTip Beveled Cannula
The MicroTip Beveled Cannula has a 40g (0.10mm diameter) all-metal, beveled tip which allows easy penetration through the retina for subretinal injection. Slight curve at tip allows better visibility and easier approach angle for entry into the subretinal space. Compatible with 25g entry cannulas.
• 3261
MicroTip Beveled Cannula 25g/40g
25g x 28mm with 40g (0.10mm) x 5mm tip
(Hub Color Coding Does Not Apply to this Product)
• 3261
MicroTip Beveled Cannula 25g/40g
25g x 28mm with 40g (0.10mm) x 5mm tip
(Hub Color Coding Does Not Apply to this Product)
Short Extension Tube
• 3223
Extension Tube [Hammer] 5cm (2in)
Silicone tubing with male and female luer lock connections. For precise, controlled microinjections. The short, small- bore tubing has a 0.1mL priming volume for minimal fluid loss and precise delivery.
• 3223
Extension Tube [Hammer] 5cm (2in)
Silicone tubing with male and female luer lock connections. For precise, controlled microinjections. The short, small- bore tubing has a 0.1mL priming volume for minimal fluid loss and precise delivery.
- Updated on:
- 14 November 2025