Why pressure continuity matters in pneumatic compression therapy

Pneumatic compression therapy is often described in terms of pressure levels, cycle times, and the number of chambers in a garment.

But the way those chambers are designed and positioned matters too.

In a multichamber pneumatic compression garment, each chamber applies pressure to a specific section of the treated area. As the chambers inflate in sequence, the pressure wave progresses from the distal part of the limb toward the body.

If the pressure zones are separated, small transitional areas may receive less consistent compression.

Lympha Press® garments use patented overlapping chamber technology designed to maintain pressure coverage throughout the sequence and create a smoother, more continuous compression wave.

What are chambers in pneumatic compression therapy?

A pneumatic compression system consists of a console, connecting hoses, and an inflatable garment worn over the area being treated.

Inside the garment are individual air chambers.

The console fills these chambers according to a programmed sequence. In sequential treatment, inflation normally begins at the part of the limb furthest from the torso and progresses proximally toward the body.

After the sequence is completed, the garment deflates. A brief pause allows the tissues and lymphatic vessels to refill before the next cycle begins.

This repeated compression-and-release pattern provides dynamic compression rather than the continuous static pressure produced by a bandage or compression stocking.

What are overlapping chambers?

In a conventional segmented garment, adjacent air chambers may meet at their edges or remain physically separated.

In an overlapping design, part of one chamber extends beneath the next chamber.

In the Lympha Press® design described in the original article, adjacent chambers overlap by approximately 30%.

This overlap is intended to maintain pressure coverage between neighbouring treatment zones as the chambers inflate. Instead of creating a sequence of isolated compression areas, the garment produces a more continuous progression of pressure across the treated limb or body region.

The concept is similar to the overlapping layers used in compression bandaging, where each new layer covers part of the previous layer.

Why pressure continuity matters

Sequential compression should create a controlled, directional wave.

When pressure passes from one chamber to the next, transitional gaps may interrupt that wave. Overlapping chambers are designed to reduce these gaps and maintain smoother pressure coverage throughout the treated area.

This can help provide:

• More continuous compression between adjacent chambers

• A smoother transition from one pressure zone to the next

• Directional distal-to-proximal pressure progression

• More uniform coverage of the treated area

• A comfortable, flowing massage sensation

• Reduced potential for isolated areas between chambers

The importance of overlap was recognized during the early development of multichamber pneumatic compression. An early Lympha Press publication described the use of overlapping cells to avoid spaces between the chambers and provide smoother outflow.

The design principle continues to be used across current Lympha Press® garments.

How the pressure wave moves

During sequential therapy, the chamber closest to the hand or foot normally inflates first.

The following chamber then inflates, followed by the next, creating a progressive pressure wave toward the torso. Because adjacent chambers overlap, pressure coverage is maintained as the sequence moves from one section to another.

This directional progression is designed to support the movement of accumulated fluid away from the distal limb and toward areas where the lymphatic and venous systems may process it more effectively.

Once the complete sequence has been applied, the garment releases its pressure. The cycle then begins again according to the prescribed treatment time and settings.

A near-infrared fluorescence imaging study examining pneumatic compression documented lymph movement during treatment with a device whose chambers overlapped in a manner similar to compression bandaging and inflated sequentially from distal to proximal.

The study did not establish that overlap alone determines clinical effectiveness. It did, however, demonstrate that lymphatic movement can be visualized during and after pneumatic compression therapy.

Why chamber count can also matter

The number of chambers determines how many individual treatment zones are available within a garment.

More chambers can allow the compression sequence to progress through smaller sections of the treated area. Some Lympha Press® garments feature up to 24 overlapping chambers.

Examples include garments designed to treat:

• One or both legs

• The lower body and abdomen

• The arm and shoulder

• The chest, back, and upper torso

• Larger or differently shaped body areas

However, chamber count should not be evaluated in isolation.

A garment with more chambers is not automatically appropriate for every patient. Treatment also depends on:

• Chamber arrangement

• Chamber overlap

• Garment coverage

• Correct garment sizing

• Pressure calibration

• Inflation and deflation sequence

• Treatment mode

• The body area being treated

• The patient’s clinical needs and tolerance

Compression therapy is a complete system. The console, garment, pressure settings, fit, chamber configuration, and prescribed treatment protocol must work together.

Different garments for different treatment areas

Lymphedema, lipedema, chronic edema, and venous disorders do not always affect only one part of a limb.

Swelling may involve the foot, ankle, hand, hip, abdomen, chest, back, shoulder, genital area, or other regions near the trunk. Treating only the visible distal swelling may therefore be insufficient for some patients.

Lympha Press® garments use different chamber configurations to provide coverage for different anatomical areas.

Selected designs include:

• Four- or eight-chamber leg garments

• Twelve-chamber arm and leg garments

• Lympha Pants® with 24 overlapping chambers

• Lympha Jacket™ with 24 overlapping chambers

• Lower-body and trunk garments

• Garments for larger patients or limited mobility

• Adjustable and custom-sized options

Garment selection should be based on the location and extent of swelling, patient mobility, body measurements, clinical goals, and professional assessment.

Overlapping technology in lymphedema management

Lymphedema develops when the lymphatic system cannot adequately transport lymphatic fluid from the tissues.

Intermittent pneumatic compression may be included as part of an individualized lymphedema-management program. Sequential pressure can support lymphatic and venous return while helping patients manage treatment at home.

Pneumatic compression does not replace every other component of care.

Depending on the patient, treatment may also include:

• Skin care

• Exercise and movement

• Manual lymphatic drainage

• Compression bandaging

• Daytime or nighttime compression garments

• Weight and mobility management

• Professional monitoring

The device, garment, pressure, frequency, and treatment duration should be selected according to the patient’s condition and the recommendations of a qualified healthcare professional.

Overlapping technology in lipedema management

Lipedema is a chronic adipose and connective tissue disorder commonly associated with pain, tenderness, heaviness, easy bruising, and disproportionate tissue accumulation.

Some people with lipedema also experience fluid accumulation or develop secondary lymphatic impairment.

Pneumatic compression cannot remove lipedema tissue. However, it may form part of a conservative symptom-management plan for selected patients, particularly when swelling, heaviness, or secondary edema is present.

A garment must be comfortable, correctly fitted, and appropriate for the areas affected.

Overlapping technology and venous insufficiency

The venous and lymphatic systems work closely together.

When venous return is impaired, increased pressure in the veins may contribute to fluid accumulation in the tissues. Persistent venous edema can also increase the load placed on the lymphatic system.

Sequential pneumatic compression creates external pressure that progresses toward the body. This action is intended to support venous return while also assisting the movement of accumulated interstitial fluid.

For patients with chronic venous insufficiency, wounds, arterial disease, heart conditions, infection, or other medical concerns, pneumatic compression must only be used after an appropriate clinical assessment.

Compression therapy is about more than pressure

Two devices may display the same pressure setting while applying compression differently.

The experience and distribution of pressure may be affected by:

• Chamber geometry

• Chamber overlap

• The number of chambers

• Inflation speed

• Inflation sequence

• Hold time

• Deflation time

• Pause duration

• Garment material

• Garment fit

• Body position

This is why a pneumatic compression system should not be assessed only by its maximum pressure or number of chambers.

The complete design determines how therapy is delivered.

Frequently asked questions

What are overlapping chambers in compression therapy?

Overlapping chambers are inflatable air cells arranged so that part of one chamber extends beneath the neighbouring chamber. This design helps maintain pressure coverage between adjacent areas during sequential inflation.

Why are overlapping chambers important?

They are designed to reduce gaps between pressure zones and create a smoother, more continuous compression sequence.

How much do Lympha Press® chambers overlap?

The original approved article described adjacent Lympha Press® chambers as overlapping by approximately 30%.

How many chambers can Lympha Press® garments have?

The number depends on the product and body area being treated. Garments may contain four, eight, twelve, sixteen, twenty-four, or other configurations. Some Lympha Press® garments feature up to 24 overlapping chambers.

Does a higher number of chambers always mean better therapy?

No. Chamber count is only one consideration. Overlap, fit, pressure control, garment coverage, treatment sequence, and individual clinical needs are also important.

Do overlapping chambers increase the pressure?

Overlap does not necessarily mean that the console pressure setting should be increased. Pressure must be prescribed or selected according to the device instructions and the patient’s clinical needs.

Can overlapping chamber therapy be used for lipedema?

Pneumatic compression may be included in the conservative management of selected people with lipedema, especially when swelling or secondary lymphatic involvement is present. It does not remove lipedema tissue.

Can the technology treat the torso?

Selected Lympha Press® garments provide treatment coverage for areas including the abdomen, hips, chest, shoulders, back, and trunk. Garment selection depends on the location of the condition and professional assessment.

Is pneumatic compression a replacement for compression garments or manual therapy?

Not necessarily. It is generally used as one component of a broader and individualized management plan.

Final thought

Not all pneumatic compression is the same.

Pressure level is important, but so are the chambers delivering it.

Their number, position, overlap, sequence, and anatomical coverage all influence how compression moves across the treated area.

Lympha Press® patented overlapping chamber technology was developed to maintain pressure continuity and create a smooth, directional compression sequence—without leaving unnecessary gaps between adjacent treatment zones.

Because effective compression is not only about how much pressure is applied.

It is also about how that pressure moves.