All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(791 products available)
There are several types of ophthalmic cannulas. A systemic breakdown of the kinds of the instrument highlights their uses and core features.
The ophthalmic paracentesis cannula is made for anterior chamber aspiration. In most cases, the device comes with a bevel-ended tip that enables it to penetrate tissues effortlessly. The cannula typically has a smaller gauge; therefore, it causes minimum harm to eye tissues. Paracentesis cannulas are primarily meant to regulate intraocular fluid. Surgeons use them to remove excess fluid before cataract surgery. On that note, most eye clinics include these cannulas when restocking anesthetic syringes, considering they are an important surgical tool.
The principal use of an ophthalmic viscoelastic device cannula is to deliver viscoelastic substances. Some of these substances include sodium hyaluronate or hyaluronic acid. Surgeons use the viscous solution for several purposes, such as maintaining eye shape during surgery. The viscoelastic also lessens friction between ocular tissues and surgical instruments. The viscoelastic material is highly effective at regulating intraocular pressure. This comes in handy in complicated eye operations like cataract and vitrectomy procedures. The cannulae have varied gauge sizes to suit different applications and viscosities.
An irrigation cannula used during ophthalmic surgeries has dual functions: irrigation and aspiration. These cannulas come with two lumens. Surgeons mainly use one lumen to deliver fluids, while the other is used to aspirate debris or excess fluid. The cannulas are primarily employed in cataract and intraocular lens surgeries for irrigation with balanced salt solution. Balanced salt solution is a fluid used to clean the eye and maintain intraocular health throughout surgery. They are vital for ensuring ocular health throughout surgery.
An scleral spur cannula is mainly used for precise procedures like intraocular implant positioning or scleral sutures. It does this by providing a stable reference point. Also, the beveled sharp tip assures precision when contacting sensitive intraocular structures. The cannulas are produced in a variety of lengths and gauges to accommodate different surgical needs. Surgeons prefer them for their accuracy and minimal ocular tissue disruption, particularly for complex surgeries. They typically stock them with other vital surgical instruments in their operating rooms.
Cannulas are made of diverse materials, each with unique properties. The materials affect the performance and longevity of ophthalmic surgical tools.
Stainless steel is a commonly used material in ophthalmic cannulas. It is renowned for its toughness and corrosion resistance. This makes it ideal for use in surgical instruments exposed to bodily fluids. In an attempt to enhance their functionalities, stainless steel cannulas are also sharpened to ensure easy penetration during procedures. The durability guarantees that the cannulas maintain their shape and effectiveness over extended usage periods.
Plastic ophthalmic cannulas are affordable and lightweight; thus, they are suitable for short-term use. Generally, these cannulas are made from polycarbonate or polyethylene. The materials are non-toxic and resistant to a wide variety of chemicals. This guarantees that they are compatible with different tissues in the eye. Plastics tend to be less durable than stainless steel. They are much useful in low-cost settings or emergency departments. Generally, the cannulas will be used as secondary or backup options.
Surgeons will use titanium cannulas in high-precision operations. This is due to titanium's exceptional strength, lightweight, and biocompatibility. These materials are particularly useful for patients who may have adverse reactions to other metals. In addition, titanium cannulas have great resistance to corrosion. The point ensures that they remain effective in high-saline environments, such as the eye. On that note, they are very effective for intraocular surgeries and renowned for their long service life.
Instruments with diamond-coated edges are ideal for demanding applications. During cataract surgery, the diamond tip ensures longevity and precision. The point reduces the necessity for recurring sharpening. It is, therefore, ideal for high-volume surgical centers that also want to maintain excellent standards of quality. The diamond coating is also very tough. It enables it to live longer than standard stainless steel in high-stress situations.
Ophthalmic cannulas are useful in a range of eye conditions. Their adaptability makes them a key component in operating rooms across several healthcare settings.
Surgeons widely use ocular cannulas in cataract surgery to treat this common vision impairment condition. During phacoemulsification, the ophthalmic viscoelastic cannula is primarily responsible for delivering viscoelastic substances to maintain eye form. The pericapsular infusion instrument also keeps the anterior chamber stable when removing the cataract lens. This reduces intraocular pressure. Therefore, cataract surgery cannot be completed without cannulas for most patients with age-related cataracts.
In retinal detachment cases, surgeons frequently employ a scleral funnel and other specialized cannulas. They use them to inject gases or silicone oil to repair the retina properly. These materials are essential in reattaching the retina and promoting healing. They also help stabilize the eyeball during the complex surgery. The cannulas used here must be extremely precise to avoid harming other ocular tissues. This ensures that they are suitable for this procedure.
During surgeries like IOL implantation, which is prevalent in refractive surgeries, surgeons rely on cannulas to place intraocular lenses precisely. The IOL implant requires an ophthalmic viscoelastic device (OVD) cannula. It delivers a cohesive viscoelastic solution to lubricate the lens and cushion it against damage while implanting it.
In the anterior chamber maintenance, paracentesis cannulas handle fluid extraction and tissue hydration. It briefly removes fluid from the anterior chamber during anterior chamber maintenance. Then, it injects a balanced salt solution to keep proper eye pressure throughout surgery. Therefore, they are crucial to eye surgery.
Corneal cross-linking strengthens the cornea in keratoconus patients. Surgeons employ cannulas to distribute riboflavin solution throughout the corneal tissue uniformly. This UV treatment-induced process improves corneal structure and stability. For effective distribution, the cannula must be precise to avoid damaging the fragile corneal tissues.
Purchasing suitable ophthalmic viscoelastic cannulas for clients requires knowledge of their application and compatibility with diverse surgical treatments to guarantee good outcomes. Below are some of the considerations when choosing the cannulas.
It's critical to consider each operation's demands. For example, cataract surgery necessitates ophthalmic paracentesis and viscoelastic cannulas. They are in charge of fluid management and viscoelastic delivery. On the other hand, retinal procedures will need scleral sponges or other specialized cannulas. To execute a successful surgery, hospitals must have viscoelastic syringes of differing gauges and lengths to accommodate specific surgery tasks and client tastes.
Cannulae for ophthalmic applications are often made of stainless steel, titanium, or high-quality plastic. Each material has unique qualities. For instance, titanium and stainless steel cannulas are incredibly robust and corrosion-resistant. They are ideal for critical surgeries. Conversely, plastic cannulas are lightweight and inexpensive, although they are less resilient. They are often used in emergency circumstances. Healthy eyes necessitate durable and corrosion-resistant instrumentation.
Since most ophthalmic operations are carried out in hospitals, clients will want cannulas that can be tailored to fit particular procedure needs. Customization options, such as length, gauge, and tip design, considerably improve the tool's efficacy for certain treatments. In addition, customers will benefit from understanding how well these cannulas can withstand sterilization processes. This is because they will be reused. Autoclaving, ethylene oxide, or gamma radiation are some commonly-used sterilization techniques.
Business owners should analyze the tip design of each cannula model since it influences their usefulness. For example, paracentesis cannulas have beveled tips. They enable access to the anterior chamber with the least amount of harm. The gauge size also matters. It affects the flow rate and precision during surgical procedures. Smaller gauges are appropriate for delicate tasks, such as injecting viscoelastic. On the other hand, larger gauges are ideal for fluid extraction.
A. Ophthalmic cannulas are often made of stainless steel and high-quality plastics, such as polycarbonate. Stainless steel cannulas are tough, corrosion-proof, and ideal for long-term use. Conversely, plastic cannulas are lightweight, inexpensive, and suitable for short-term or one-time usage. However, they are less resilient. In ophthalmic treatments, titanium alloys, and diamond-coated cannulas are also employed. They offer superior strength and effectiveness.
A.Cannulas are often disposable. However, there are reusable ones that exist. Disposable cannulas are found in emergency or outpatient settings, where they provide one-time use. These reduce infection risk and need tedious instrument sterilization. Conversely, reusable cannulas are applicable. In settings where hospital staff can easily sterilize them using autoclaving or chemical sterilization. Nevertheless, reusables will frequently be retractable to increase their lifespan. Hospitals should choose the type based on their operational demands and infection control protocols, in addition to their environmental practices.
A. One must evaluate the unique needs of the therapy while choosing the cannula. For example, during cataract surgery, the surgeon needs a paracentesis cannula to access the anterior chamber and an OVD cannula to inject viscoelastic. Conversely, retinal surgery requires specialized scleral cannulas. The versatility of gauge size and tip designs ensures that hospitals have the proper cannula for various operations. They will also be required to collaborate with their clients to understand their specific needs and procedure.
A. Ophthalmic viscoelastics have several uses in cataract surgery. They safeguard the delicate ocular tissues during the treatment. Surgeons frequently use them to maintain eye shape after removing the cataract. This also keeps the anterior chamber steady. In addition, viscoelastics aid in the smooth movement of surgical instruments across intraocular tissues, lowering friction and harm. Furthermore, they act as a barrier that shields the corneal endothelium from injury during fluid exchange. This guarantees healthy recovery with minimal postoperative problems.
