Bayonet Tumescent Infiltration Cannula – Threaded Fitting

The Bayonet Tumescent Infiltration Cannula with Threaded Fitting is a blunt-tip cannula with a stepped offset shaft, used to deliver tumescent or wetting solution before liposuction. Instead of a Luer hub, the shaft ends in a machined screw thread that seats directly into a threaded handle or tubing connector, giving a rigid, wobble-free joint behind the bayonet offset. See the full Tumescent Bayonet Infiltration Cannulas range for other fittings.

Buyers also search for this instrument as a screw-fit bayonet cannula, a threaded hub infiltrator, or an offset wetting solution cannula.

Screw-Thread Bayonet Cannula for Handle-Based Infiltration Systems

A threaded fitting turns the cannula and the handle into a single rigid unit. There is no rotational play at the joint, so the direction the surgeon points the handle is exactly the direction the tip travels. On a bayonet shaft that matters more than usual, because an offset only works predictably if the joint behind it does not rotate.

What the Bayonet Shape Does

A bayonet cannula has a stepped offset bend in the shaft between the hub and the working section. The offset moves the hub, the handle and the surgeon's hand sideways, out of the straight line running back from the entry site. That single change in geometry solves two problems at once.

First, sight lines. With a straight cannula the hand sits directly behind the entry point and blocks the view of the skin being filled. With the offset, the hand is out of that line and the surgeon can watch the entry site and the tissue turgor while infiltrating.

Second, angle of approach. The offset lets the working section be held closer to parallel with the skin while the hub stays clear of the body surface. The cannula stays in the subcutaneous plane instead of angling down into deeper tissue, which is exactly what an infiltration pass needs. The same clearance helps when working under a retracted flap or in a confined area where a straight hub would foul the surrounding tissue.

The distal tip is closed and rounded. It separates the subcutaneous plane by blunt dissection as the cannula advances, pushing vessels and nerves aside rather than dividing them, and side holes along the working section release the solution along the length of the pass rather than at one point.

Key Features

• ✔ Machined screw thread seats rigidly into threaded handles and connectors
• ✔ No rotational play behind the offset, so the bayonet stays oriented
• ✔ Stepped bayonet offset keeps the hand clear of the entry site sight line
• ✔ Working section can be held closer to parallel with the skin surface
• ✔ Closed blunt tip separates the plane without cutting vessels or nerves
• ✔ Side holes along the working section spread solution along the pass
• ✔ One-piece German stainless steel shaft, fully reusable
• ✔ Custom diameters, lengths and hole patterns available on request

Specifications

Clinical Applications

• Tumescent infiltration before body liposuction of the abdomen, flanks, back and thighs
• Wetting solution delivery before power-assisted and syringe liposuction
• Arm, neck and submental infiltration with the shorter, smaller-diameter sizes
• Infiltration under a retracted flap or in confined areas where a straight hub would foul

Material and Sterilization

The cannula is made from German stainless steel with a passivated surface that resists corrosion and pitting through repeated cleaning cycles. It is reusable and can be steam autoclaved at 134°C. Flush the lumen and every side hole with clean water immediately after use and dry fully before autoclaving. On a bayonet cannula, pay attention to the offset bend during cleaning: any bend in a lumen is where residue settles first, so flush from both ends until the water runs clear.

How to Choose

Order the threaded fitting if you already own handles that take a screw-in cannula, and send us your handle specification before ordering in quantity. Diameter sets the flow rate and length sets the reach. For large body areas such as the abdomen, flanks and thighs, the 2.5mm to 4.0mm diameters in 25cm to 35cm are the usual working range, because they fill a large area in fewer passes. The 1.8mm to 2.5mm range in 15cm to 25cm suits arms, the neck and smaller regions. The 1.0mm to 1.5mm diameters in 5cm to 12cm are for facial and submental infiltration, where thin tissue needs a small-diameter cannula. Match the fitting to the syringe, pump or handpiece already in your theater.

Why Buy Direct From the Manufacturer

Manufactured by Healermed Instruments, a surgical instruments manufacturer and exporter based in Sialkot, Pakistan. Factory-direct pricing removes the importer and distributor layer. Production runs under an ISO 13485 and FDA CGMP quality system, with ISO 9001 and CE Mark certification. OEM manufacturing and custom branding are available for distributor and brand-owner orders.

Related Instruments

Other fittings in the same cannula range:

• Tumescent Bayonet Infiltration Cannula – Luer Lock
• Tumescent Bayonet Infiltration Cannula – Fixed Power Handle
• Tumescent Bayonet Infiltration Cannula – Grooved Power Handle
• Tumescent Bayonet Infiltration Cannulas – All Fittings

Frequently Asked Questions

What is a threaded fitting bayonet cannula used for?

It is used to deliver tumescent or wetting solution into subcutaneous tissue when the cannula screws into a threaded reusable handle rather than attaching to a syringe. The screw thread creates a rigid joint with no rotational play, which keeps the bayonet offset pointing where the surgeon set it.

What is the difference between a bayonet cannula and a straight cannula?

A bayonet cannula has a stepped offset in the shaft; a straight cannula does not. The offset moves the hub and the surgeon's hand out of the line of sight to the entry site, and lets the working section stay closer to parallel with the skin. A straight cannula is simpler to clean and store, but the hand blocks the view.

Is this cannula autoclavable?

Yes. The instrument is fully reusable and can be steam autoclaved at 134°C. Flush the lumen and every side hole with clean water immediately after use, remove all residue before sterilization, and dry completely. Flush from both ends so nothing is left sitting in the offset bend, where residue collects first.

What is the minimum order quantity for bulk orders?

The minimum order quantity is agreed per order rather than set at a fixed number. Send us the sizes, fittings and quantities you need through the wholesale request page and we will confirm the minimum for that specification. This lets a small distributor start with a trial order and a larger importer scale up on the same terms.

Do you provide samples?

Yes. Samples are available on request and the buyer covers the shipping charges. Send us your handle specification along with the diameter and length you want to evaluate. Testing a sample first is the safest way to confirm the thread seats correctly in your handle.

Can I order a custom size?

Yes. Custom diameters, working lengths, and hole patterns are available on request in addition to the standard size grid. Send your specification through the wholesale request page and our production team will confirm what can be produced. Custom branding is also available for distributor and OEM orders.