US 12,226,081 B2
Capsule endoscope
Fanhua Ming, Wuhan (CN); Bo Feng, Wuhan (CN); Rong Wang, Wuhan (CN); Yun Chen, Wuhan (CN); Xinhong Wang, San Diego, CA (US); Xiaodong Duan, Pleasanton, CA (US); and Guohua Xiao, Plano, CA (US)
Assigned to ANKON TECHNOLOGIES CO., LTD., Wuhan (CN); and ANX IIP HOLDING PTE. LTD., Singapore (SG)
Appl. No. 17/256,634
Filed by ANKON TECHNOLOGIES CO., LTD, Wuhan (CN); and ANX IP HOLDING PTE. LTD., Singapore (SG)
PCT Filed Sep. 18, 2018, PCT No. PCT/CN2018/106205
§ 371(c)(1), (2) Date Dec. 28, 2020,
PCT Pub. No. WO2020/000687, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 201810685479.5 (CN), filed on Jun. 28, 2018.
Prior Publication US 2021/0259531 A1, Aug. 26, 2021
Int. Cl. A61B 1/04 (2006.01); A61B 1/00 (2006.01)
CPC A61B 1/041 (2013.01) [A61B 1/00016 (2013.01); A61B 2562/162 (2013.01); A61B 2562/164 (2013.01); A61B 2562/166 (2013.01); A61B 2562/227 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A capsule endoscope, comprising:
an enclosure;
an imaging unit, a data processing unit and an antenna unit that are arranged in the enclosure;
wherein the enclosure comprises a cylindrical middle enclosure and two hemispherical covers connected to both ends of the middle enclosure, and the antenna unit is arranged close to the inner surface of the middle enclosure,
wherein a length of the antenna unit matches a size of the capsule endoscope;
the length of the antenna unit (L) is determined by

OG Complex Work Unit Math
wherein, c is a speed of light, and f is an operating frequency of the antenna unit;
the antenna unit comprises a flexible substrate and an antenna disposed on the flexible substrate, and the antenna surrounds and extends spirally along the axis of the middle enclosure;
the flexible substrate comprises a first end portion and a second end portion disposed opposite to each other,
the first end portion and the second end portion are rectangular;
a length of the first end portion is equal to half of a circumference of the middle enclosure, and
a length of the second end portion is also equal to half of the circumference of the middle enclosure;
when the antenna unit is in a wound state, the first end portion only occupies a space at one side of a first junction zone S1 and the second end portion only occupies the space at one side of a second junction zone S2, and the space occupied by the first end portion and the second end portion are on opposite sides, configured to improve stability of the antenna unit fixed to the inner surface of the middle enclosure, and make internal structure of the capsule endoscope more compact to avoid increasing the diameter of the capsule endoscope.