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Suspension systems. A complete airtight socket kit with liner, gel sock, inner socket and sleeve.
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WillowWood · Suspension systems · PR-091
WillowWood LimbLogic M mechanical elevated-vacuum pump
The WillowWood LimbLogic M is a mechanical elevated-vacuum pump that draws air out of the socket as you walk and cushions impact at the same time. It weighs 475 g and adds 91 mm to the build. Two versions exist: Light for users of 100 to 170 lb and Standard for 160 to 330 lb. Vacuum level and spring stiffness are adjustable, and the distal pyramid rotates.
- Weight
- 475 g
- Build height
- 91 mm (3.6 in)
- Product height
- 104 mm (4.1 in)
- User weight, Light
- 100-170 lb (45-77 kg)
WillowWood LimbLogic M key features
- Mechanical elevated-vacuum pump
- Weighs 475 g; build height 91 mm (3.6 in)
- Light version: 100-170 lb; Standard: 160-330 lb
- Adjustable vacuum setting and spring stiffness
- Rotatable distal pyramid, four-hole mount
- 24-month warranty and 30-day trial from fitting
Who the WillowWood LimbLogic M suits
For below-knee prosthesis users who want elevated vacuum suspension and some shock absorption in one part, at activity levels 2 to 4. Your prosthetist needs enough clearance below the socket and sets the vacuum and spring.
This kind of device is prescribed and fitted by a clinician. An enquiry starts that conversation. It is not a purchase.
Figures for comparing
- Weight
- 0.475 kg (1.0 lb)
- Max user weight
- 77 kg (170 lb). Light version 45-77 kg (100-170 lb); Standard version 73-150 kg (160-330 lb), 135 kg (300 lb) at activity level 4
The same units on every product, converted from the specifications below. Where a source gives two limits, the lower one is shown.
WillowWood LimbLogic M specifications
| Type | Mechanical elevated-vacuum pump with shock absorption |
|---|---|
| Weight | 475 g |
| Build height | 91 mm (3.6 in) |
| Product height | 104 mm (4.1 in) |
| User weight, Light | 100-170 lb (45-77 kg) |
| User weight, Standard | 160-330 lb (73-150 kg); 160-300 lb at activity level 4 |
| Activity level | 2-4 |
| Mount | Four-hole, rotatable distal pyramid |
| Warranty | 24 months from fitting |
| Trial | 30 days from fitting |
| Price | Quoted on request |
| Maker country | USA |
| Brand | WillowWood |
| Category | Components and consumables, Suspension systems |
| Catalog ID | PR-091 |
Compared with the source page on 5 October 2026. Details can change, so we confirm them in your quote. Open the source page.
WillowWood LimbLogic M: common questions
How much does the LimbLogic M weigh?
The pump weighs 475 g and has a build height of 91 mm, or 3.6 inches.
What is the user weight limit for LimbLogic M?
The Light version covers 100 to 170 lb. The Standard version covers 160 to 330 lb, or up to 300 lb at activity level 4.
Is LimbLogic M an electronic pump?
No. WillowWood describes it as a mechanical elevated vacuum system.
How to get a quote for the WillowWood LimbLogic M
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