Research Article
Engineering Micromechanical Systems for the Next Generation Wireless Capsule Endoscopy
Table 1
Comparison of WCE systems with increased functionality for the purpose of delivering therapy to the GI tract.
| | WCE | References | Status | Volume | Power | Motion | Vision | Therapy | Actuator |
| | Park (2007) | [13] | Prototype | 3.7 cm3 | Te | A | — | — | Motor | | Glass | [14] | Prototype | 2.2 cm3 | B | N, Sp | Camera | — | SMA wire/motor | | Menciassi | [15] | Prototype | 2.9 cm3 | Te | N, Sp | Camera | — | SMA wire | | Valdastri | [16] | Prototype | 3.0 cm3 | Te/B | A | Camera | — | Motor | |
Tognarelli | [17] | Prototype | 2.9 cm3 | B | N, Sp | CMOS | — | SMA flat/motor | | Enterion | [18] | Commercial | 2.9 cm3 | M | N | — | L, P, S | Spring | | InteliSite | [20] | Commercial | 2.6 cm3 | M | N | — | L | SMA wire | | IntelliCap | [21] | Commercial | 2.1 cm3 | B | N | — | L | Microfluidic | | Lambert | [22] | Prototype | 3.5 cm3 | B | N | — | L | Spring | | Karargyris | [23] | Prototype | 3.0 cm3 | B | N | — | — | Spring | | Bourbakis | [24] | Concept | 3.0 cm3 | B | N | Camera | — | Spring | | Park (2008) | [26] | Prototype | 1.9 cm3 | B | N | Camera | Biopsy | Spring | | Kong | [27] | Prototype | 1.6 cm3 | B | N | — | Biopsy | Spring | | Peirs | [28] | Prototype | 3.2 cm3 | Te | N | — | Biopsy | Hydraulic | | Gorini | [29] | Prototype | 2.0 cm3 | B | A | — | — | SMA wire | | Kim | [30] | Prototype | 3.8 cm3 | B | A | Camera | — | SMA spring |
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—: data unavailable, A: active locomotion, B: battery, L: liquid medication, M: magnetism, N: natural peristalsis, P: powder medication, S: solids medication, Sp: static position, and Te: tethered.
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