CN111012290A - Conformal capsule antenna structure, preparation method and wireless capsule endoscope system - Google Patents
Conformal capsule antenna structure, preparation method and wireless capsule endoscope system Download PDFInfo
- Publication number
- CN111012290A CN111012290A CN201911326590.6A CN201911326590A CN111012290A CN 111012290 A CN111012290 A CN 111012290A CN 201911326590 A CN201911326590 A CN 201911326590A CN 111012290 A CN111012290 A CN 111012290A
- Authority
- CN
- China
- Prior art keywords
- capsule
- antenna
- flexible top
- top shell
- conformal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002775 capsule Substances 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 241000237983 Trochidae Species 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims description 88
- 229910052751 metal Inorganic materials 0.000 claims description 87
- 239000002243 precursor Substances 0.000 claims description 53
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 30
- 239000010949 copper Substances 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 25
- 229910052802 copper Inorganic materials 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 16
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 16
- 229910052737 gold Inorganic materials 0.000 claims description 16
- 239000010931 gold Substances 0.000 claims description 16
- 229910052763 palladium Inorganic materials 0.000 claims description 15
- 229910052709 silver Inorganic materials 0.000 claims description 14
- 239000004332 silver Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000004642 Polyimide Substances 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 5
- 238000009713 electroplating Methods 0.000 claims description 5
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 5
- 229920000515 polycarbonate Polymers 0.000 claims description 5
- 239000004417 polycarbonate Substances 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 238000004528 spin coating Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 238000010329 laser etching Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 16
- 239000010408 film Substances 0.000 description 15
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 12
- 238000007747 plating Methods 0.000 description 12
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 8
- 239000005750 Copper hydroxide Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 229910001956 copper hydroxide Inorganic materials 0.000 description 8
- 229910001961 silver nitrate Inorganic materials 0.000 description 8
- KZJPVUDYAMEDRM-UHFFFAOYSA-M silver;2,2,2-trifluoroacetate Chemical compound [Ag+].[O-]C(=O)C(F)(F)F KZJPVUDYAMEDRM-UHFFFAOYSA-M 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 210000001035 gastrointestinal tract Anatomy 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000008855 peristalsis Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- FNTWMMUUWMKLRW-UHFFFAOYSA-K [N+](=O)(O)[O-].[Cu](O)(O)O Chemical compound [N+](=O)(O)[O-].[Cu](O)(O)O FNTWMMUUWMKLRW-UHFFFAOYSA-K 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/041—Capsule endoscopes for imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
- A61B1/00016—Operational features of endoscopes characterised by signal transmission using wireless means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
- C23C14/205—Metallic material, boron or silicon on organic substrates by cathodic sputtering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5873—Removal of material
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Surgery (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Radiology & Medical Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biophysics (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Details Of Aerials (AREA)
Abstract
The invention provides a conformal capsule antenna structure, a wireless capsule endoscope system with the conformal capsule antenna structure and a preparation method of the conformal capsule antenna structure. Through with helical antenna integration in the flexible top shell of capsule, not only possess the omnidirectional radiation ability of broadband, can also make full use of capsule inner space, reduce the occupation space of antenna, provide more overall arrangement spaces for other parts and components and parts in the capsule. The spiral antenna is directly prepared in the flexible top shell of the capsule by utilizing the stability of the non-contact processing of laser, so that the perfect conformity of the spiral antenna and the flexible top shell can be realized, the structure is stable, and the falling-off can be avoided. In addition, the arrangement mode of the invention can also ensure that the helical antenna is not easily influenced by other devices and has more stable performance.
Description
Technical Field
The invention belongs to the technical field of medical detection equipment, relates to a capsule endoscope for wireless communication inside and outside a human body, and particularly relates to a conformal capsule antenna structure and a preparation method thereof, and further relates to application of the conformal capsule antenna structure in a wireless capsule endoscope.
Background
The wireless capsule endoscope system is a comprehensive system integrating multiple subjects such as photoelectric information communication, image processing, biomedicine and the like, and has the characteristics of convenience, no wound, no pain and the like, and has important research significance and application value in the field of disease diagnosis and treatment. The wireless communication antenna for image data transmission is an important component of a wireless capsule endoscope system, can transmit monitored human body internal data to the body surface or the outside of the body in real time, embodies huge application value and research significance in the field of health and medical treatment, and directly influences the quality of human body internal information transmission.
Since the volume of the wireless capsule endoscope system is limited by the special application environment of the human body, and the orientation of the wireless capsule endoscope system is changed frequently when the wireless capsule endoscope system moves in the human body, the capsule endoscope is required to be as small as possible, and various devices in the capsule endoscope are required to be miniaturized as much as possible. Meanwhile, in the process of diagnosing the disease condition, high-quality and high-resolution image information needs to be transmitted in real time, which requires that the wireless communication antenna has higher transmission speed and larger bandwidth. However, the endoscope systems of the prior art do not satisfy the above requirements.
Disclosure of Invention
In view of the above, it is an urgent technical problem to provide a conformal capsule antenna with small size, high transmission speed and large bandwidth, a method for manufacturing the same, and an application of the conformal capsule antenna in a wireless capsule endoscope.
In view of the above problems, the present invention provides a conformal capsule antenna structure, which includes a flexible top shell, a spiral antenna and a feeding electrode, wherein the spiral antenna is a continuous spiral structure and has a start end and a tail end, the spiral antenna is conformal and fixed on the inner wall of the flexible top shell, one end of the feeding electrode is connected or attached to the start end or the tail end of the spiral antenna, and the other end is connected to a control circuit.
According to one embodiment of the present invention, the helical antenna has a width of 0.5mm to 3mm, a pitch of 0.5mm to 20mm, and a thickness of 2 to 100 μm.
According to one embodiment of the present invention, the flexible top case is made of polyimide or polycarbonate; and/or the flexible top shell is hemispherical, and the radius is 2-7 mm.
According to one embodiment of the present invention, the helical antenna includes a metal layer and a plating layer on a surface of the metal layer. Furthermore, the material of the metal layer is copper, gold, palladium or silver, and/or the material of the electroplated layer is copper, gold, silver or palladium.
The invention also provides a wireless capsule endoscope system, which comprises a capsule body and end bodies positioned at two ends of the capsule body and fixedly connected with the capsule body, wherein at least one end body is the conformal capsule antenna structure.
The invention also provides a preparation method of the conformal capsule antenna structure, which comprises the following steps: providing a flexible top shell, and forming a required spiral pattern on the inner surface of the flexible top shell, wherein the spiral pattern is made of conductive metal such as gold, copper, silver or palladium; electroplating the spiral pattern by taking the spiral pattern as a template to form a spiral antenna, wherein the spiral antenna is provided with a starting end and a tail end; and forming a feeding electrode at a start end or a tail end of the helical antenna.
Further, according to an embodiment of the present invention, the desired spiral pattern is formed by: depositing a metal layer on the inner surface of the flexible top shell; and carrying out laser etching on the metal layer to form a required spiral pattern. The deposition of the metal layer is formed by adopting a magnetron sputtering mode.
Further, according to another embodiment of the present invention, the desired spiral pattern is formed by: providing a precursor solution of a conductive metal, wherein the solute of the precursor solution is selected from one or more of palladium chloride, silver nitrate, silver trifluoroacetate, copper hydroxide, copper trihydroxy isonitrate and chloroauric acid; coating the precursor solution of the conductive metal on the inner surface of the flexible top shell; the flexible top shell covered with the precursor solution of the conductive metal is heated, and a layer of precursor film of the conductive metal is formed on the inner surface of the flexible top shell; and forming a required spiral pattern on the surface of the precursor film of the conductive metal in a laser direct writing mode.
According to one embodiment of the present invention, the precursor solution of the conductive metal is formed on the inner surface of the flexible top case by a spin coating method or a pulling method; and/or the spin coating speed is 100 to 3000rpm, or the pulling speed is 0.05 to 5 mm/s.
According to one embodiment of the present invention, a washing step is further included to remove excess precursor of the conductive metal before or after forming the feeding electrode.
In the invention, the spiral antenna is integrated in the flexible top shell of the capsule, so that the capsule has broadband omnidirectional radiation capability, the internal space of the capsule can be fully utilized, the occupied space of the antenna is reduced, and more layout space is provided for other components and parts in the capsule. The spiral antenna is directly prepared in the flexible top shell of the capsule by utilizing the stability of the non-contact processing of laser, so that the perfect conformity of the spiral antenna and the flexible top shell can be realized, the structure is stable, and the falling-off can be avoided. In addition, the arrangement mode of the invention can also ensure that the helical antenna is not easily influenced by other devices and has more stable performance. Finally, the helical antenna of the conformal capsule antenna structure prepared by the preparation method is large in thickness, stronger in signal transmission with the outside and free of signal interruption, so that the diagnostic continuity is facilitated.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a wireless capsule endoscope system of the present invention.
Fig. 2 is a schematic structural diagram of a conformal capsule antenna structure according to the present invention.
Fig. 3 is a schematic diagram of a method for manufacturing a conformal capsule antenna structure according to a first embodiment of the invention.
Fig. 4 is a schematic diagram of a method for manufacturing a conformal capsule antenna structure according to a second embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention will be described in detail with reference to the following embodiments. It is to be understood that the following examples are illustrative of the invention only and are not limiting thereof.
Fig. 1 is a schematic diagram of a wireless capsule endoscopic system 100 of the present invention. As shown, the wireless capsule endoscope system 100 includes a capsule body 110 and end bodies (not labeled) disposed at two ends of the capsule body 110 and fixedly connected to the capsule body 110, wherein at least one of the end bodies is a conformal capsule antenna structure 120, and the two end bodies are fixedly connected together by screwing, clamping, and the like. The capsule body 110 also includes a light source, an imaging device, a sensor, a battery, a transceiver module, and the like, which are not shown in fig. 1 for convenience of description.
Fig. 2 is a schematic structural diagram of a conformal capsule antenna structure 120 of the present invention. As shown, the conformal capsule antenna structure 120 includes a flexible top shell 122, a helical antenna 124, and a feed electrode (not shown). As shown in the figure, the spiral antenna 124 is a continuous spiral structure having a start end 1242 and a tail end 1244, the width d of the spiral antenna 124 is 0.5mm to 3mm, the spiral pitch L is 0.5mm to 20mm, and the thickness is 2 μm to 100 μm. The helical antenna 124 is conformally fixed to the inner wall of the flexible top case 122, one end of the feeding electrode is connected or attached to the beginning end 1242 or the end 1244 of the helical antenna 124, and the other end is connected to a control circuit (not shown).
The flexible top shell 122 is a curved thin substrate made of a flexible material, such as polyimide, polycarbonate, etc., and in one embodiment, the flexible top shell 122 has a hemispherical shape with a radius of 2-7 mm. In one embodiment, the beginning 1242 of the helical antenna 124 is located at the center of the flexible top shell 122. In the present application, the material of the spiral antenna 124 is a high-conductivity conductive metal material, such as copper, gold, silver, or palladium.
Such an arrangement significantly reduces the space occupied by the antenna inside the capsule body 110 as compared to an embedded antenna, resulting in a larger interior space inside the capsule body 110 for placement of other elements.
The present invention also provides a method of making the conformal capsule antenna structure 120 shown in fig. 2. FIG. 3 is a schematic diagram of a first embodiment of the present invention. The preparation method comprises the following steps:
first, a flexible top case 122 is provided, the flexible top case 122 is a curved thin substrate made of a flexible material, such as polyimide, polycarbonate, etc., in this embodiment, the flexible top case 122 has a hemispherical shape with a radius of 2-7 mm. The flexible top shell 122 is an already formed capsule shell.
Next, a metal layer 123 is deposited on the inner surface of the flexible top shell 122. The deposition of the metal layer 123 is realized by magnetron sputtering. In this embodiment, the magnetron sputtering apparatus employs an ATTO3-SS vacuum magnetron sputtering coating machine from beijing pato vacuum technology ltd, and the set working conditions are as follows: vacuum 8X 10-5～1×10-4Pa, current 0.5-5A, time 30 s-10 min. The target material for sputtering is a solid target materialSuch as copper target, gold target, silver target, palladium target, etc. The deposited metal layer 123 has a thickness of 10nm to 1 μm and is made of a metal such as copper, gold, silver, or palladium.
Next, the metal layer 123 is laser etched to form a desired spiral pattern 125. The laser etching is realized by a three-axis displacement platform and a scanning galvanometer, specifically, a laser focusing point is controlled by the three-axis displacement platform, the laser focusing point is focused on the metal layer 123 on the inner wall of the flexible top shell 122 in real time, the required spiral pattern 125 is rapidly scanned by matching with the scanning galvanometer, and the spiral pattern 125 has a start end 1252 positioned in the center and a tail end (not shown) positioned at the end point of the spiral.
Then, the spiral pattern 125 is used as a template, and plating is performed on the spiral pattern 125 to form the spiral antenna 124, whereby the spiral antenna 124 also has a start end 1242 and a tail end 1244. The electroplating solution is commercially available, and for example, a Japanese PROMEX gold plating solution or a copper electroplating solution produced by Shanghai hydroxyl chemical engineering science and technology company is adopted; the plating is performed by using a DC power supply, such as a Leda LP220DE type DC power supply, and the current density of the plating is 0.01-50A/cm2。
Therefore, the material of the spiral antenna 124 is copper, gold, silver, palladium or other conductive metal, the thickness of the spiral antenna 124 is 2 to 100 μm, the width of the spiral antenna 124 is 0.5mm, and the spiral pitch is 1 mm. Specifically, the helical antenna 124 includes two layers: the metal layer is positioned on the lower layer and the electroplated layer is positioned on the surface of the metal layer, and the metal layer and the electroplated layer are made of copper, silver, palladium or gold, and the metal layer and the electroplated layer are the same or different.
The spiral antenna 124 is formed on the basis of the original spiral pattern 125, and the thickness of the spiral antenna 124 is increased by electroplating, so that signals are stronger when signals are transmitted with the outside, signal interruption is avoided, and diagnosis is influenced. Compared with the prior art, the thickness of the conformal helical antenna 124 obtained by the preparation method is larger, but the method in the prior art cannot achieve the thickness of the antenna, and therefore, in terms of signal transmission, the signals transmitted by the helical antenna 124 prepared by the method are stronger, and the continuity of diagnosis is more facilitated.
Finally, a feeding electrode (not shown) is formed on the beginning 1242 or the end 1244 of the spiral antenna 124. The feed electrode is also connected to the control circuit, for example by wire bonding.
FIG. 4 is a schematic diagram of a second embodiment of the present invention, the method comprising the steps of:
first, a flexible top case 122 is provided, the flexible top case 122 is a curved thin substrate made of a flexible material, such as polyimide, polycarbonate, etc., in this embodiment, the flexible top case 122 has a hemispherical shape with a radius of 2-7 mm. The flexible top shell 122 is a molded capsule shell.
Secondly, providing a precursor solution of the conductive metal, wherein the solute of the precursor solution of the conductive metal is selected from palladium chloride, silver nitrate, silver trifluoroacetate, copper hydroxide and copper (Cu) trihydroxy isonitrate2(NO3)(OH)3) And chloroauric acid. For example, in one embodiment, the solute of the precursor solution of the conductive metal is palladium chloride. The conductive metal precursor solution has a solute such as palladium chloride in a mass fraction of 1 to 50 wt%. The precursor solution of the conductive metal is commercially available or prepared, and for example, CN103373740A describes a precursor Cu of copper metal2(NO3)(OH)3The preparation method of (1). As will be appreciated by those skilled in the art, the solute of the precursor solution of the conductive metal is substantially a compound of the conductive metal.
Again, the precursor solution of the conductive metal is coated on the inner surface of the flexible top case 122. In one embodiment, the coating is performed by spin coating at a speed of 100-3000 rpm.
Then, the flexible top case 122 covered with the precursor solution of the conductive metal is baked to form a precursor film 126 of the conductive metal on the inner surface of the flexible top case 122, wherein the precursor film is made of a compound of the conductive metal, such as palladium chloride, silver nitrate, silver trifluoroacetate, copper hydroxide, copper trihydroxy isonitrate, or chloroauric acid. In one embodiment, the precursor film is palladium chloride. A hot baking apparatus such as a model GZ008 electric oven. The baking temperature is 50-150 ℃, and the baking time is 30 seconds-5 minutes. In the process of baking, only the solvent is volatilized, and no chemical change occurs. In this example, the plate was baked at 120 ℃ for 2 minutes.
Next, a desired spiral pattern 125 is formed on the surface of the precursor thin film 126 of the conductive metal by laser direct writing. The laser direct writing adopts equipment such as German DL300U type laser processing equipment which is mainly provided with an AWAVE-355-15W type ultraviolet laser, a Hurryscan III355 digital scanning galvanometer, a Linos355F100 type telecentric focusing lens, a three-dimensional displacement platform and the like. The output wavelength of the ultraviolet laser is 355 nm. The controllable laser power is 0-15W, and the scanning speed is 10-1000 mm/s. In the present embodiment, the laser focus point is controlled by the three-axis displacement platform to focus on the inner surface of the flexible top shell 122 in real time, and the scanning galvanometer is used to scan the desired spiral pattern 125 quickly. The action principle of laser direct writing is as follows: the laser scans the surface of the precursor film 126 of the conductive metal according to a computer-defined pattern. The computer is used to control the laser beam to write preset pattern on the surface of the target base material directly according to the designed path without mask, the operation is flexible, and the high energy of the laser is utilized. In one embodiment, the material of the precursor film 126 of the conductive metal is palladium chloride, the palladium chloride at the position scanned by the laser is reduced to palladium metal under the high energy of the laser, and the position not scanned by the laser still exists in the form of palladium chloride. In another embodiment, the material of the precursor film 126 of the conductive metal is silver nitrate, the silver nitrate at the position scanned by the laser is reduced to silver metal under the high energy of the laser, and the position not scanned by the laser still exists in the form of silver nitrate. In yet another embodiment, the material of the precursor film 126 of the conductive metal is silver trifluoroacetate, the silver trifluoroacetate at the position scanned by the laser is reduced to silver metal under the high energy of the laser, and the position not scanned by the laser still exists in the form of silver trifluoroacetate. In yet another embodiment, the material of the precursor film 126 of the conductive metal is copper hydroxide, the copper hydroxide at the position scanned by the laser is reduced to copper metal under the high energy of the laser, and the position not scanned by the laser still exists in the form of copper hydroxide. In another embodiment, the material of the precursor film 126 of the conductive metal is trihydroxy copper nitrate, the copper trihydroxy nitrate at the position scanned by the laser is reduced to copper metal under the high energy of the laser, and the position not scanned by the laser still exists in the form of the copper trihydroxy nitrate. In yet another embodiment, the material of the precursor film 126 of the conductive metal is chloroauric acid, the chloroauric acid at the position scanned by the laser is reduced to gold under the high energy of the laser, and the position not scanned by the laser still exists in the form of chloroauric acid. Thus, the precursor film 126 of the conductive metal, after being laser-written, includes two parts: metal regions 1262 that make up the spiral pattern 125, and a precursor 1264 of the remaining conductive metal outside the pattern. The spiral pattern 125 has a start 1252 at the center and a tail (not shown) at the end of the spiral, whereby the spiral pattern 125 itself constitutes a metal layer of gold, silver, copper or palladium.
Then, the spiral pattern 125 is used as a template, and a plating layer is formed on the spiral pattern 125 by plating to form the spiral antenna 124, whereby the spiral antenna 124 also has a leading end 1242 and a trailing end 1244. The spiral antenna 124 has a thickness of 20 μm, a width of 1mm, and a spiral pitch of 2 mm. In this embodiment, the helical antenna 124 includes two layers: the metal layer is positioned on the lower layer and the electroplated layer is positioned on the metal layer and made of copper, silver, palladium or gold. The material of the electroplated layer and the material of the metal layer can be the same or different. Preferably, the material of the plating layer is the same as that of the metal layer. The plating step is the same as the preparation method of the first embodiment described above.
Finally, a feeding electrode (not shown) is formed on the beginning 1242 or the end 1244 of the spiral antenna 124. The feed electrode is also connected to the control circuit, for example by wire bonding.
Optionally, the flexible top shell is washed either before or after forming the feeding electrode to remove excess precursors of conductive metals, such as palladium chloride, silver nitrate, silver trifluoroacetate, copper hydroxide, copper trihydroxy isonitrate, or chloroauric acid. For example, when the precursor of the conductive metal is palladium chloride, the washing solution is one or more of water, ethanol and acetone.
The method of the third embodiment of the present invention includes the following steps. The illustration may refer to fig. 4 of the second embodiment.
First, as described in the second embodiment, a flexible top shell 122 is provided, the flexible top shell 122 being an already molded capsule shell.
Next, as described in the second embodiment, a precursor solution of the conductive metal is provided.
Again, the interior surface of the flexible top shell 122 is coated with the precursor solution of the conductive metal. In this embodiment, a pulling method is adopted, the flexible top shell 122 is immersed in the precursor solution of the conductive metal, and then pulled out from the solution, wherein the pulling speed is 0.05-5 mm/s. Thus, the precursor solution of the conductive metal is adhered to both the inner and outer surfaces of the flexible top case 122.
Next, the flexible top case 122 covered with the precursor solution of the conductive metal is thermally baked, so that the precursor solution of the conductive metal forms precursor films 126 of the conductive metal on the inner and outer surfaces of the flexible top case 122. In this example, the sheet was baked at 100 ℃ for 30 seconds. The heat drying principle is the same as above.
Then, a desired spiral pattern 125 is formed on the surface of the precursor thin film 126 of the conductive metal by means of laser direct writing. The laser direct writing step is the same as the second embodiment.
Next, the spiral pattern 125 is used as a template, and plating is performed on the spiral pattern 125 to form the spiral antenna 124, whereby the spiral antenna 124 also has a start end 1242 and a tail end 1244. The thickness of the spiral antenna 124 is 90 μm. The plating step is the same as the preparation method of the first embodiment described above. In this embodiment, the helical antenna 124 includes two layers: the metal layer is made of gold, silver, copper or palladium, and the electroplated layer is made of copper, silver, palladium or gold. The material of the electroplated layer and the material of the metal layer can be the same or different. Preferably, the material of the plating layer is the same as that of the metal layer.
Finally, a feeding electrode (not shown) is formed on the beginning 1242 or the end 1244 of the spiral antenna 124. The feed electrode is also connected to the control circuit, for example by wire bonding.
In the czochralski method, a washing step is performed to remove excess precursors of conductive metals such as palladium chloride, silver nitrate, silver trifluoroacetate, copper hydroxide, copper trihydroxy isonitrate, or chloroauric acid before or after forming the feeding electrode.
In the second and third embodiments, the precursor solution of the conductive metal is dried to remove moisture, so as to obtain a precursor film of the conductive metal, and then the metal compound in the precursor of the conductive metal is reduced to the conductive metal by using the high energy of the laser. Therefore, it is understood by those skilled in the art that any metal compound capable of being reduced to a conductive metal by a laser with high energy can be used as the precursor of the present application, and is not limited to the kind of the precursor listed in the present application.
By the above method of the present invention, a helical antenna 124 is formed on the inner surface of the flexible top shell 122 of the capsule endoscope 100, and a feeding electrode is formed at the beginning or the end of the helical antenna, thereby obtaining the conformal capsule antenna structure 120 of the present invention. The conformal capsule antenna structure 120 is matched with the capsule body 110 to form a shell of the endoscope capsule 100, and required electronic components are arranged in the capsule body 110, so that the endoscope capsule provided by the invention is obtained.
In the invention, the spiral antenna 124 is integrated in the flexible top shell 122 of the capsule, so that the capsule has broadband omnidirectional radiation capability, the internal space of the capsule can be fully utilized, the occupied space of the antenna is reduced, and more layout space is provided for other components and parts in the capsule. By utilizing the stability of the non-contact processing of the laser, the spiral antenna 124 is directly prepared inside the flexible top shell 122 of the capsule, so that the perfect conformity of the spiral antenna 124 and the flexible top shell 122 can be realized, the structure is stable, and the falling-off is avoided. In addition, the arrangement of the present invention can make the helical antenna 124 not easily affected by other devices, and the performance is more stable. Finally, the helical antenna 124 of the conformal capsule antenna structure 120 prepared by the preparation method of the present application has a larger thickness, so that a signal is stronger when the signal is transmitted with the outside, and signal interruption is not caused, thereby being more beneficial to the continuity of diagnosis.
In use, since the wireless capsule endoscope is a capsule-shaped endoscope, which is a wireless implant device, enters a human body through oral administration, moves in the digestive tract by virtue of the peristalsis of the digestive tract to spy on the health condition of the digestive tract, and can transmit related information in real time. When being discharged, the medicine is discharged out of the body through the human excretory system along with the peristalsis of the digestive tract. The wireless capsule endoscope has the advantages of convenient examination, no wound, no lead, no pain, no cross infection, no influence on the normal work of patients and the like.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. The utility model provides a conformal capsule antenna structure, its characterized in that includes flexible top shell, helical antenna and feed electrode, and this helical antenna is continuous heliciform structure, has top and tail end, and this helical antenna is conformal and be fixed in this flexible top shell inner wall, and this feed electrode's one end is connected or attached at this helical antenna's top or tail end, and other end connection control circuit.
2. The conformal capsule antenna structure of claim 1, wherein: the width of the spiral antenna is 0.5 mm-3 mm, the spiral distance is 0.5 mm-20 mm, and the thickness is 2-100 mu m.
3. The conformal capsule antenna structure of claim 1, wherein: the flexible top shell is made of polyimide or polycarbonate; and/or the flexible top shell is hemispherical, and the radius is 2-7 mm.
4. The conformal capsule antenna structure of claim 1, wherein: the spiral antenna comprises a metal layer positioned at the lower layer and an electroplated layer positioned on the surface of the metal layer.
5. The conformal capsule antenna structure of claim 4, wherein: the material of the metal layer is copper, gold, palladium or silver, and/or the material of the electroplated layer is copper, gold, silver or palladium.
6. A wireless capsule endoscopic system, characterized by: the conformal capsule antenna structure comprises a capsule body and end bodies which are positioned at two ends of the capsule body and fixedly connected with the capsule body, wherein at least one end body is the conformal capsule antenna structure according to any one of claims 1-5.
7. A method of making a conformal capsule antenna structure according to any one of claims 1-5, comprising the steps of:
providing a flexible top shell, and forming a required spiral pattern on the inner surface of the flexible top shell, wherein the spiral pattern is made of conductive metal;
electroplating the spiral pattern by taking the spiral pattern as a template to form a spiral antenna, wherein the spiral antenna is provided with a starting end and a tail end; and
a feeding electrode is formed at the beginning or the end of the helical antenna.
8. The method of claim 7, wherein: the desired spiral pattern is formed by the following method: depositing a metal layer on the inner surface of the flexible top shell; and carrying out laser etching on the metal layer to form a required spiral pattern.
9. The method of claim 8, wherein: the deposition of the metal layer is formed by adopting a magnetron sputtering mode.
10. The method of claim 7, wherein: the desired spiral pattern is formed by the following method:
providing a precursor solution of a conductive metal;
coating the precursor solution of the conductive metal on the inner surface of the flexible top shell;
the flexible top shell covered with the precursor solution of the conductive metal is heated, and a layer of precursor film of the conductive metal is formed on the inner surface of the flexible top shell; and
and forming a required spiral pattern on the surface of the precursor film of the conductive metal in a laser direct writing mode.
11. The method of manufacturing according to claim 10, wherein: the precursor solution is formed on the inner surface of the flexible top shell by a spin coating method or a pulling method; the spin coating speed is 100-3000 rpm, and the pulling speed is 0.05-5 mm/s; and/or the heat drying temperature is 50-150 ℃ and the time is 30 seconds-5 minutes.
12. The method of manufacturing according to claim 10, wherein: a washing step is also included to remove precursors of the conductive metal, either before or after forming the feed electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326590.6A CN111012290A (en) | 2019-12-20 | 2019-12-20 | Conformal capsule antenna structure, preparation method and wireless capsule endoscope system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326590.6A CN111012290A (en) | 2019-12-20 | 2019-12-20 | Conformal capsule antenna structure, preparation method and wireless capsule endoscope system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111012290A true CN111012290A (en) | 2020-04-17 |
Family
ID=70211230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911326590.6A Pending CN111012290A (en) | 2019-12-20 | 2019-12-20 | Conformal capsule antenna structure, preparation method and wireless capsule endoscope system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111012290A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571884A (en) * | 2021-07-22 | 2021-10-29 | 河北工业大学 | Helical antenna applied to implantable wireless capsule system |
| CN114865287A (en) * | 2022-04-22 | 2022-08-05 | 武汉工程大学 | Spiral composite antenna for UHF communication |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6453591A (en) * | 1987-08-25 | 1989-03-01 | Sumitomo Electric Industries | Manufacture of flexible circuit board |
| KR20070095113A (en) * | 2006-03-20 | 2007-09-28 | 재단법인서울대학교산학협력재단 | Small antenna for wideband and capsule endoscope using the same |
| CN101892461A (en) * | 2010-06-30 | 2010-11-24 | 中国科学院上海光学精密机械研究所 | Laser direct writing film and method for laser direct writing micro-nano graph |
| CN103173724A (en) * | 2011-12-26 | 2013-06-26 | 深圳光启高等理工研究院 | Microstructure processing method |
| CN103682571A (en) * | 2014-01-02 | 2014-03-26 | 沈阳尚贤医疗***有限公司 | Laser engraving antenna for capsule endoscope body |
| CN204927490U (en) * | 2015-07-21 | 2015-12-30 | 杭州华冲科技有限公司 | Last tower antenna of capsule type endoscope |
| CN105789031A (en) * | 2016-03-11 | 2016-07-20 | 中国建筑材料科学研究总院 | Mask for laser direct writing and etching method of mask |
| CN108448233A (en) * | 2018-04-17 | 2018-08-24 | 华南理工大学 | A kind of multipolarization conformal antenna for capsule endoscope |
| CN108441843A (en) * | 2018-03-13 | 2018-08-24 | 北京科技大学 | Preparation method is plated in the laser direct-writing preform photocatalysis of material surface metal pattern |
| CN108736126A (en) * | 2018-05-07 | 2018-11-02 | 南京信息工程大学 | Flexible conformal double frequency-band capsule antenna |
| CN108832283A (en) * | 2018-06-15 | 2018-11-16 | 南京邮电大学 | Novel flexible double frequency annular capsule antenna |
| CN208659309U (en) * | 2018-02-27 | 2019-03-29 | 重庆金山医疗器械有限公司 | Wireless capsule endoscope |
| US20190214742A1 (en) * | 2018-01-10 | 2019-07-11 | Taiwan Green Point Enterprises Co., Ltd. | Method of making a conformal array antenna and conformal array antenna made from the same |
| CN110534434A (en) * | 2019-07-15 | 2019-12-03 | 华南理工大学 | A kind of method that solwution method prepares metal oxide TFD |
-
2019
- 2019-12-20 CN CN201911326590.6A patent/CN111012290A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6453591A (en) * | 1987-08-25 | 1989-03-01 | Sumitomo Electric Industries | Manufacture of flexible circuit board |
| KR20070095113A (en) * | 2006-03-20 | 2007-09-28 | 재단법인서울대학교산학협력재단 | Small antenna for wideband and capsule endoscope using the same |
| CN101892461A (en) * | 2010-06-30 | 2010-11-24 | 中国科学院上海光学精密机械研究所 | Laser direct writing film and method for laser direct writing micro-nano graph |
| CN103173724A (en) * | 2011-12-26 | 2013-06-26 | 深圳光启高等理工研究院 | Microstructure processing method |
| CN103682571A (en) * | 2014-01-02 | 2014-03-26 | 沈阳尚贤医疗***有限公司 | Laser engraving antenna for capsule endoscope body |
| CN204927490U (en) * | 2015-07-21 | 2015-12-30 | 杭州华冲科技有限公司 | Last tower antenna of capsule type endoscope |
| CN105789031A (en) * | 2016-03-11 | 2016-07-20 | 中国建筑材料科学研究总院 | Mask for laser direct writing and etching method of mask |
| US20190214742A1 (en) * | 2018-01-10 | 2019-07-11 | Taiwan Green Point Enterprises Co., Ltd. | Method of making a conformal array antenna and conformal array antenna made from the same |
| CN208659309U (en) * | 2018-02-27 | 2019-03-29 | 重庆金山医疗器械有限公司 | Wireless capsule endoscope |
| CN108441843A (en) * | 2018-03-13 | 2018-08-24 | 北京科技大学 | Preparation method is plated in the laser direct-writing preform photocatalysis of material surface metal pattern |
| CN108448233A (en) * | 2018-04-17 | 2018-08-24 | 华南理工大学 | A kind of multipolarization conformal antenna for capsule endoscope |
| CN108736126A (en) * | 2018-05-07 | 2018-11-02 | 南京信息工程大学 | Flexible conformal double frequency-band capsule antenna |
| CN108832283A (en) * | 2018-06-15 | 2018-11-16 | 南京邮电大学 | Novel flexible double frequency annular capsule antenna |
| CN110534434A (en) * | 2019-07-15 | 2019-12-03 | 华南理工大学 | A kind of method that solwution method prepares metal oxide TFD |
Non-Patent Citations (4)
| Title |
|---|
| MIAH MD SUZAN ET AL.: "An Ultrawideband Conformal Loop Antenna for Ingestible Capsule Endoscope System", 《2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)》 * |
| SUNG YUN JUN ETAL.: "3-D Printing of Conformal Antennas for Diversity Wrist Worn Applications", 《IEEE TRANSACTIONS ON COMPONENTS, PACKAGING AND MANUFACTURING TECHNOLOGY》 * |
| YUTA MORIMOTO ET AL.: "Design of Ultra Wide-Band Low-Band Implant Antennas for Capsule Endoscope Application", 《2013 7TH INTERNATIONAL SYMPOSIUM ON MEDICAL INFORMATION AND COMMUNICATION TECHNOLOGY (ISMICT)》 * |
| 陈岁元等: "《材料的激光制备与处理技术》", 冶金工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571884A (en) * | 2021-07-22 | 2021-10-29 | 河北工业大学 | Helical antenna applied to implantable wireless capsule system |
| CN113571884B (en) * | 2021-07-22 | 2024-01-12 | 河北工业大学 | Spiral antenna applied to implanted wireless capsule system |
| CN114865287A (en) * | 2022-04-22 | 2022-08-05 | 武汉工程大学 | Spiral composite antenna for UHF communication |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111012290A (en) | Conformal capsule antenna structure, preparation method and wireless capsule endoscope system | |
| US8721540B2 (en) | Ingestible circuitry | |
| JPH04109927A (en) | Electronic endoscope apparatus | |
| JP2005192821A (en) | Capsule type medical apparatus | |
| JP2004533879A (en) | In-vivo sensing device with a circuit board having a hard section and a soft section | |
| EP2116177B1 (en) | Capsule type medical device | |
| US10874824B2 (en) | High-volume manufacturing of catheters comprising electrodes having low impedance at low frequency | |
| CN112641448B (en) | Flexible magnetic compatible implanted electroencephalogram electrode array and preparation method thereof | |
| CN108832285A (en) | A kind of four layers of bifilar helical broadband capsule antenna of planarization | |
| US20140257052A1 (en) | Monolithically integrated implantable flexible antenna for electrocorticography and related biotelemetry devices | |
| CN111348616A (en) | Implantable neural electrode and preparation method thereof | |
| CN111568346A (en) | Capsule endoscope based on optical ultrasonic bimodal imaging | |
| JP5165023B2 (en) | Endoscope | |
| CN111714119B (en) | Non-invasive shapeable bimodal brain-computer interface | |
| CN110061350B (en) | Wideband circularly polarized annular antenna of ingestion type capsule endoscope based on graphene | |
| CN112057027A (en) | Capsule endoscope and antenna preparation method thereof | |
| CN116172583A (en) | Flexible electrode for collecting dual-mode signals and preparation method and application thereof | |
| CN215605576U (en) | Supplementary multi-functional oral cavity endoscope of intelligence | |
| EP4381914A1 (en) | Device and system for exchanging energy and/or data, in particular for localisation purposes, with at least one implant and/or at least one organ in a human or animal body and/or an apparatus external to the body via piezoelectric and/or capacitive transducers | |
| JP2005006769A (en) | Encapsulated endoscope | |
| US20220181165A1 (en) | Fabrication Method of Flexible Cyclo-Olefin Polymer (COP) Substrate for IC Packaging of Communication Devices and Biocompatible Sensors Devices | |
| Kiourti et al. | Wearable Antennas and Electronics | |
| JP4562998B2 (en) | Capsule endoscope | |
| CN109330590A (en) | Epidermal electrode for epidermal signal acquisition and application thereof | |
| CN117731295B (en) | Self-adsorption nanofiber epidermis electrode and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200417 |
|
| RJ01 | Rejection of invention patent application after publication |