1-14. (canceled)
15. Apparatus comprising a swallowable medical treatment device, which is configured to initially assume a contracted state having a volume of less than 4 cm3, which comprises:
a gastric anchor, which comprises a flexible sheet which initially is rolled to assume a contracted size, which is configured to, upon coming in contact with a liquid, unroll to assume an expanded size that is sufficient to prevent passage of the anchor through a round opening having a diameter of between 1 cm and 3 cm, and which is shaped so as to define a hole therethrough having a radius of at least 0.4 cm; and
a medical treatment component, which is coupled to the gastric anchor.
16. The apparatus according to claim 15, wherein the treatment component comprises a drug.
17. The apparatus according to claim 15, wherein the treatment component comprises an electrical stimulator.
18. (canceled)
19. The apparatus according to claim 15,
wherein the opening is a pylorus of a subject,
wherein the liquid is stomach contents of the subject,
wherein the gastric anchor is configured to, upon coming in contact with the stomach contents, unroll to assume the expanded size that is sufficient to prevent passage of the anchor through the pylorus, and
wherein the hole is sized to allow chyme to pass to the pylorus.
20-26. (canceled)
27. A method comprising:
receiving, by a subject, a swallowable treatment device in an initially contracted state, which includes (i) a gastric anchor, which includes a flexible sheet which initially is rolled to assume a contracted size, and which is shaped so as to define an hole therethrough having a radius of at least 0.4 cm, and (ii) a treatment component coupled to the gastric anchor; and
swallowing the treatment device by the subject, so that the anchor, upon coming in contact with stomach contents of the subject, unrolls sufficiently to prevent passage of the anchor through a pylorus of the subject, and to allow chyme to pass through the hole to the pylorus.
28. The method according to claim 27, wherein the treatment component includes a drug, and wherein receiving comprises receiving the treatment device including the gastric anchor and the drug.
29. The method according to claim 27, wherein the treatment component includes a gastric electrical stimulator, and wherein receiving comprises receiving the treatment device including the gastric anchor and the gastric electrical stimulator.
30. The method according to claim 29, wherein the gastric electrical stimulator is configured to apply electrical stimulation to the stomach, and to configure the stimulation to generate peristalsis.
31. The method according to claim 29, wherein the gastric electrical stimulator is configured to apply electrical stimulation at between 5 and 7 mA, and at a frequency of between 5 and 40 Hz.
32. The method according to claim 27, wherein the medical treatment device further includes one or more dissolvable elements, and wherein swallowing comprises swallowing the treatment device while the one or more dissolvable elements initially hold the sheet rolled.
33. The method according to claim 32, wherein the one or more dissolvable elements include one or more dissolvable rings, and wherein swallowing comprises swallowing the treatment device while the one or more dissolvable rings are initially placed around the rolled sheet.
34. The method according to claim 32, wherein the one or more dissolvable elements include a dissolvable glue, and wherein swallowing comprises swallowing the treatment device while the dissolvable glue binds an outermost edge of the sheet to a more inner portion of the sheet.
35. The method according to claim 32, wherein the one or more dissolvable elements are selected from the group consisting of: a dissolvable capsule, and a dissolvable coating, and wherein swallowing comprises swallowing the treatment device while the sheet is within the selected dissolvable element.
36. The apparatus according to claim 17, wherein the electrical stimulator is configured to apply electrical stimulation, and to configure the stimulation to generate peristalsis.
37. The apparatus according to claim 17, wherein the electrical stimulator is configured to apply electrical stimulation at between 5 and 7 mA, and at a frequency of between 5 and 40 Hz.
38. The apparatus according to claim 15, wherein the medical treatment device further comprises one or more dissolvable elements, which initially hold the sheet rolled.
39. The apparatus according to claim 38, wherein the one or more dissolvable elements comprise one or more dissolvable rings, which are initially placed around the rolled sheet.
40. The apparatus according to claim 38, wherein the one or more dissolvable elements comprise a dissolvable glue that initially binds an outermost edge of the sheet to a more inner portion of the sheet.
41. The apparatus according to claim 38, wherein the one or more dissolvable elements are selected from the group consisting of: a dissolvable capsule, and a dissolvable coating.
42. The apparatus according to claim 15, wherein the sheet, when unrolled, has a length of between 20 and 40 mm, and a width of between 10 and 30 mm.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A device including:
a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies,
wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device.