Infiltration cannulas and fat injection guns work at different stages of liposuction and fat-transfer procedures. An infiltration cannula delivers fluid into the subcutaneous tissue before aspiration, while a fat injection gun helps control graft delivery during reinjection. For instrument selection, clinicians should look beyond diameter alone. Working length, port pattern, shaft shape, Luer Lock compatibility, syringe size, tissue plane, and the material being injected all matter. A well-matched setup makes the workflow more predictable and avoids unnecessary adapters or incompatible components.
Where These Instruments Fit in the Procedure
In a liposuction or fat-grafting workflow, infiltration and injection serve different functions at different stages.
|
Stage |
Instrument |
Primary consideration |
|
Tumescent infiltration |
Infiltration cannula |
Fluid distribution, access, port pattern |
|
Fat aspiration/harvesting |
Liposuction or harvesting cannula |
Diameter, openings, tissue handling |
|
Fat processing |
Syringes, filters, transfer adapters |
Graft consistency and component compatibility |
|
Fat placement |
Injection cannula / fat injection gun |
Controlled delivery and recipient-site access |
Tumescent infiltration involves delivering a dilute wetting solution into subcutaneous tissue, commonly containing local anesthetic and epinephrine. Published clinical literature describes it as a core part of modern liposuction technique, with fluid infiltration contributing to anesthesia and vasoconstriction within the treatment area.
For clinicians assembling a complete setup, Artman's plastic surgery instruments include infiltration, liposuction and fat-transfer tools for different stages of the procedure.
Clinical Tip
Select the infiltration and injection components as parts of one workflow, not as isolated instruments.
What Does an Infiltration Cannula Do?
An infiltration cannula is a hollow instrument used to deliver fluid into a targeted tissue plane. In liposuction, it is commonly associated with the tumescent anesthesia technique.
The distal openings allow solution to leave the cannula within the tissue. Designs vary considerably, including:
- single-port configurations
- multiple lateral ports
- circular or Mercedes patterns
- spiral port arrangements
- straight shafts
- curved shafts
The appropriate configuration depends on the area being treated, required reach and the surgeon's technique.
In liposuction, infiltration cannulas are commonly used during tumescent anesthesia, where fluid is delivered into subcutaneous tissue before aspiration.
Artman's Luer Lock cannula collection includes different diameters, lengths and port patterns rather than one standardized design.
Choosing an Infiltration Cannula for Liposuction
An infiltration cannula for liposuction should be evaluated by four main variables.
1. Working Length
Length determines how far the surgeon can reach from the access site.
A shorter instrument may suit a limited treatment area, while longer cannulas provide access across a broader subcutaneous region. Length should match anatomy and the planned tissue plane rather than simply choosing the longest available option.
For smaller access requirements, Artman's 1 mm × 7 cm infiltration cannula provides one example of a short configuration.
2. Diameter
Diameter affects handling and fluid passage, but it should not be considered separately from length and port design.
Artman's single-port Luer Lock infiltration cannula is available in several combinations, including 1 mm, 2 mm and 3 mm diameters with different working lengths.
3. Number and Arrangement of Ports
Ports determine where fluid exits the shaft.
A single-port cannula concentrates delivery through one opening. Multi-port designs distribute solution through several openings positioned around or along the distal shaft.
Examples include the 2 mm × 15 cm 8-port infiltration cannula and a 3 mm × 20 cm spiral 3-port cannula.
A published clinical study of an infiltration system also describes the practical use of a Luer Lock-connected cannula for delivering tumescent solution during liposuction.
4. Straight or Curved Shaft
A straight cannula provides a direct path from the access point. Curved configurations can provide a different approach when body contour or access direction makes a straight path less convenient.
For practices that need multiple shapes, Artman's curved Luer Lock infiltration cannula set provides four curved options within one set.
Selection Tip
Match length, curve and port pattern to the treatment area before comparing cannulas by diameter.
Why Luer Lock Connections Matter
A Luer Lock cannula uses a secure threaded connection between compatible components. In an infiltration setup, this may connect the cannula to a syringe, transfer adapter or another fluid-delivery component.
The practical benefit is connection security. Components still need to be checked for proper fit before use.
Surgeons who regularly switch between configurations may prefer an infiltration cannula set with transfer adapter. Artman also offers a five-piece Luer Lock cannula set with a 2 mm transfer adapter, which combines single-port, multi-port, spiral and circular configurations.
For a wider range of configurations, the 7-piece Luer Lock infiltration set includes different lengths, diameters and port arrangements.
Compatibility Check
Confirm the cannula, syringe, tubing and transfer adapter connection before the procedure. “Luer Lock” alone does not confirm that every component in a system is interchangeable.
What Is a Fat Injection Gun?
A fat injection gun is used later in the fat-transfer workflow. Instead of infiltrating solution into a donor site, it assists with controlled delivery of prepared fat into a recipient area.
The device holds a compatible syringe and mechanically advances the syringe plunger. This can give the surgeon a repeatable hand-operated method of advancing the graft.
Artman's Fat Injection Gun is designed for 10 mL, 20 mL and 50 mL syringe attachments and uses a click-action mechanism.
Do not assume that every micro fat injection gun delivers the same quantity with each trigger movement. Dose increments, syringe compatibility and operating method should be verified for the specific device before clinical use.
Fat Injection Gun vs Manual Syringe Injection
Both approaches can form part of fat grafting. The choice depends on the volume, graft consistency, recipient area and surgeon's technique.
|
Manual syringe |
Fat injection gun |
|
Direct plunger control |
Trigger-assisted plunger advancement |
|
Minimal additional equipment |
Requires compatible syringe/device |
|
Useful across many grafting techniques |
Can support repeated controlled delivery |
|
Force is applied directly by hand |
Mechanical action changes the hand interface |
The injection device does not determine graft quality by itself. Harvesting technique, processing and injection strategy all affect the transplanted tissue.
Research on structural fat grafting describes controlled placement of small parcels through recipient-site passes, while nanofat and microfat techniques use differently processed grafts and delivery dimensions.
Device Note
A fat syringe injection gun should match the graft and syringe being used. Do not respond to unexpected injection resistance simply by applying more force.
Build the Setup Around Compatibility
A practical fat-transfer system can be viewed as:
Infiltration → Harvesting → Processing → Transfer → Injection
Each connection should make sense before the case begins.
For example, a surgeon may pair a suitable infiltration cannula with a Luer Lock system, use compatible transfer components during graft processing, and then select an injection cannula or gun according to the prepared graft.
Clinics that require several infiltration options can compare complete cannula kits instead of purchasing each configuration separately.
This also creates a more useful purchasing checklist:
Cannula: diameter, working length, shaft shape, port pattern
Connection: Luer Lock or required adapter
Injection device: compatible syringe size and mechanism
Reprocessing: cleaning access, material and manufacturer instructions
Cleaning Reusable Infiltration Cannulas
Reusable cannulas require internal as well as external cleaning.
A shaft may look clean while residue remains inside the lumen or around the ports. Cleaning should therefore begin promptly and follow the instrument manufacturer's validated reprocessing instructions.
Artman's 0.9 mm cannula cleaning brush is designed to access narrow cannula lumens. The broader Instrument Care Guide covers cleaning, inspection, drying and sterilization practices for reusable surgical instruments.
Care Tip
A clean outer surface does not confirm a clean lumen. Inspect the ports and internal channel before sterilization.
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FAQs
What is an infiltration cannula used for in liposuction?
It is used to deliver wetting or tumescent solution into subcutaneous tissue before fat aspiration. The specific solution and anesthesia protocol are determined by the treating surgeon.
Is a multi-port infiltration cannula better than a single-port cannula?
Not universally. Port number and arrangement change how fluid exits the instrument. Selection depends on the treatment area, technique and desired distribution pattern.
What is the advantage of a Luer Lock infiltration cannula?
A compatible Luer Lock connection provides a threaded interface between the cannula and syringe, adapter or fluid-delivery component.
Should I choose a straight or curved infiltration cannula?
Choose according to access and anatomy. Straight cannulas provide a direct approach, while curved designs can be useful when the desired path follows a contour or requires a different angle.
What does a fat injection gun do?
It holds a compatible syringe and uses a mechanical mechanism to advance the plunger during fat placement. Its purpose is controlled graft delivery, not fat harvesting or infiltration.
Can the same instrument be used for infiltration and fat injection?
These stages have different requirements. Cannula dimensions, ports, connections and the material passing through the instrument should all be considered before deciding what belongs in each part of the workflow.
Select Instruments as a System
Infiltration and fat injection sit at different ends of the liposuction and fat-grafting workflow. Good instrument selection begins with the procedure, tissue plane and material being delivered, followed by diameter, length, port configuration and connection type.
Explore Artman's plastic surgery instruments, Luer Lock cannulas and cannula kits to compare configurations for infiltration, liposuction and fat-transfer workflows.
