A.S.F. Universal

The ‘B-HEX Pupil Expander’ (6.50 mm diameter, 0.075 mm thick), ‘B-HEX Pupil Expander 2.0’ (6.75 mm diameter, 0.125 mm thick), & ‘B-OCTA 8.00 Pupil Expander’ (8.00 mm diameter, 0.125 mm thick), are US FDA Regd. & patented productsfrom Med Invent Devices Pvt. Ltd. These are sterile single use flexible plastic devices with notches and flanges disposed in a single plane. Alternate flanges are tucked under the iris to engage the notches to the pupil margin and provide an expanded pupil.

The pupil expansion device is made of a soft polyurethane material that is gentle on intraocular tissue. After injecting viscoelastic into the anterior chamber, the inserter is introduced through the primary incision. It is positioned centrally over the lens and pupil expansion device is introduced

The B-OCTA 8.00 Pupil Expander (a version of the B-HEX device) is a sterile, single-use, flexible surgical device used in ophthalmology to mechanically dilate the pupil during procedures like cataract surgery and vitrectomy, especially when the pupil is small or non-dilating.

Key Features and Specifications:

• Expanded Pupil Size: The B-OCTA 8.00 is designed to provide an extra-large (XL) expanded pupil, wider than the standard B-HEX which provides a 5.5 mm expanded pupil. The "8.00" in its name likely refers to its ability to achieve a larger expansion for a wider surgical view.
• Design: It features a unique, uniplanar (single plane), flexible design with notches and flanges that are tucked under the iris margin to hold the pupil open in an expanded hexagonal shape. The B-OCTA has more pairs of notches than the original B-HEX to allow for better dilation.
• Material: Made of a flexible plastic material, typically Polyimide or PMMA.
• Profile: It has a very thin profile (around 75 to 125 microns or 0.075 - 0.125 mm), which allows it to be inserted through small incisions (1 mm or larger) and minimizes obstruction of surgical instruments.
• Insertion/Removal: It is typically preloaded in a transparent carrier and inserted/removed using a specific 23-gauge micro-forceps or a manipulator, rather than an injector.
• Usage: It is particularly useful for cases involving non-dilating pupils, intraoperative floppy iris syndrome (IFIS), manual small incision cataract surgery (MSICS), phacoemulsification (PHACO), and combined phacovitrectomy procedures.
• Sterility/Reuse: It is a sterile, single-use disposable device. Re-use or re-sterilization is not recommended as it can alter the material properties and performance

The b-hex® pupil expander 2.0 is a newer version of a surgical device used to mechanically expand a small pupil during eye surgery, such as cataract or vitreoretinal surgery. It is designed to be stronger and more rigid than the original b-hex, making it suitable for patients with rigid pupils, while the original version is better for flexible pupils. The b-hex 2.0 is inserted and removed with micro-forceps through a small incision, providing a controlled expansion without needing an injector. 

Key features of b-hex® 2.0

• Increased strength: Designed to be "big and strong," making it better for eyes with rigid pupils.
• Ease of use: The insertion and removal techniques are the same as the original b-hex, using micro-forceps through a small incision.
• Controlled expansion: Allows the surgeon to manually expand the pupil by engaging the device's notches with forceps, offering more control than injector-based devices.
• Flexibility: Despite its strength, it is still flexible and gentle on the iris, allowing for a round pupil to be left after removal.
• Low profile: Its thin profile allows for unhindered instrument movement during surgery.