Implant, implant antenna and packaging structure thereof

Abstract

The utility model provides an implant, an implant antenna and a packaging structure thereof. The packaging structure comprises a first packaging body and a second packaging body which are connected with each other. The first packaging body is provided with a first surface, and the second packaging body is provided with a second surface opposite to the first surface; the first surface of the first packaging body is provided with a groove space for placing the antenna main body, and is provided with a butt joint groove surrounding the periphery of the groove space; the second surface of the second packaging body is provided with a butt joint flange, and the butt joint flange is matched with the butt joint groove and embedded into the butt joint groove. The middle area, surrounded by the butt joint flange, of the second surface is provided with a first part, and the first part is opposite to the opening of the groove space and used for shielding the opening. According to the utility model, the antenna is separated from other devices, and the antenna is independently packaged, so that the size is reduced, and tight combination and closed connection between the two packaging bodies are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to an implant, an implant antenna and a packaging structure thereof. BACKGROUND

[0002] At present, the implant with wireless signal transmission function generally integrates the antenna and other devices together for packaging, which leads to the large volume of the whole packaging structure, limits the area that can be placed on the implant, and further limits the number of antennas that can be arranged.

[0003] As shown in Figure 1 , Figure 2 An existing implant 920 is taken as an example of a tibial tray 920 implanted into a tibia 900. The tibial tray assembly 920 is connected by a tibial tray 930 and an accessory serving as a signal processing device 940. The signal processing device 940 is provided with an electronic component 943 and a battery 942 for supplying power to the electronic component 943. The electronic component 943 is provided with, for example, a sensor for monitoring the motion state of the tibia, a processor for processing monitoring data and / or transceiving information, a memory for storing various data signals, and various auxiliary circuits. The electronic component 943 is connected with an antenna 945 for transceiving wireless signals, for example, transmitting monitoring data to an external device through the antenna 945, and receiving control instructions transmitted by the external device. The battery 942, the electronic component 943, and the antenna 945 are placed in a sleeve 941 for protection. The distal end of the sleeve 941 surrounds the part of the antenna 945, which is an antenna cover 944. The proximal end of the sleeve 941 is provided with a joint hole 946 for installing a fixing screw, which is used for fixedly connecting the signal processing device 940 with the tibial tray 930.

[0004] Since the signal processing device 940 encapsulates the antenna 945, the electronic component 943 and the battery 942 together, the volume of the signal processing device 940 is large, which limits the setting position of the signal processing device 940 on the tibial tray assembly 920, for example, cannot affect the combination of the implant and the bone tissue, and needs to consider various conditions such as the mechanical properties of the implant itself, the implant space at the tibia, the operation during the operation, the recovery after the operation, the long-term use and the like. For example, only the implant depth of the distal end of the tibial tray 930 needs to be considered, and a pre-holed hole with a corresponding depth is formed on the tibia 900; but since the signal processing device 940 with a large volume is arranged, although the sleeve 941 outside the signal processing device 940 can be made into a columnar shape to be inserted into the pre-holed hole to assist in fixing the tibial tray assembly 920, the antenna 945 needs a certain length to meet the signal receiving and transmitting performance requirements, the length of the signal processing device 940 is difficult to reduce, and the pre-holed hole of the tibia 900 needs to be increased in depth to form an extension section 910 for placing the signal processing device 940, which is an additional accessory, which not only increases the complexity of the implant operation, but also may cause the patient to have a longer recovery period after the operation. The layout also limits the directional setting of the antenna 945, and cannot provide the best angle to affect the signal transmission effect; and it is difficult to increase the number of antennas 945, otherwise the volume of the whole structure is larger; and only a single antenna 945, the anti-interference ability and fault tolerance of the signal processing device 940 are low, and if the antenna 945 fails or the performance decreases, the normal operation of the signal processing device 940 will be greatly affected. Practical new type content

[0005] The utility model discloses a kind of implants, implant antenna and its encapsulation structure, separate antenna and other devices, to reduce volume, with individually encapsulated antenna.

[0006] To achieve the above object, one technical scheme of the utility model provides an encapsulation structure of antenna;The encapsulation structure includes connected first encapsulation body and second encapsulation body;

[0007] The first encapsulation body has first surface, and the second encapsulation body has second surface opposite to the first surface;

[0008] The first surface of the first encapsulation body is provided with recessed space for placing antenna main body, and is provided with docking groove around the periphery of the recessed space;

[0009] The second surface of the second encapsulation body is provided with docking flange, and is matched with the docking groove and embedded in the docking groove;The intermediate region of the second surface surrounded by the docking flange has first part, and the first part is opposite to the opening of the recessed space, for shielding the opening.

[0010] Optionally, the first surface of the first encapsulating body is provided with a surrounding wall, which surrounds the recessed space; and the abutting groove surrounds the surrounding wall.

[0011] Optionally, the recessed space, the side surface of the surrounding wall, and the first part of the intermediate region cooperatively form a closed space, in which the antenna body is enclosed.

[0012] Optionally, the intermediate region of the second surface of the second encapsulating body has a second part located outside the first part, which is opposite to and in close contact with the limiting surface of the surrounding wall.

[0013] Optionally, the first surface of the first encapsulating body further comprises a peripheral region between the abutting groove and the outer boundary of the first encapsulating body; and the second surface of the second encapsulating body further comprises an edge region outside the abutting flange, wherein the peripheral region is opposite to and in close contact with the edge region.

[0014] Optionally, the abutting flange is in close contact with the abutting groove when the abutting flange is embedded in the abutting groove.

[0015] Optionally, the abutting groove is a trapezoidal groove.

[0016] Optionally, the abutting flange is a trapezoidal flange matching the abutting groove.

[0017] Optionally, the inner side wall of the abutting groove and the inner side wall of the abutting flange are matching bevels.

[0018] Optionally, the outer side wall of the abutting groove and the outer side wall of the abutting flange are matching bevels.

[0019] Optionally, the interface end of the antenna body is connected to one end of an antenna cable, the antenna cable passes through the channel formed by the first encapsulating body and the second encapsulating body arranged on the same side, and the other end of the antenna cable is connected to other devices outside the encapsulating structure.

[0020] Optionally, the first guiding groove provided on the first surface is buckled with the second guiding groove provided on the second surface, thereby forming the channel; and the inner wall of the channel is in close contact with the antenna cable.

[0021] Optionally, the first encapsulating body and the second encapsulating body are respectively made of a polymer.

[0022] Optionally, the polymer comprises ultra-high molecular weight polyethylene or polyether ether ketone.

[0023] Optionally, the first encapsulating body and the second encapsulating body are connected by heat pressing, bonding, or ultrasonic welding, so as to form airtight connection between the surfaces in close contact on the first encapsulating body and the second encapsulating body.

[0024] The utility model discloses another technical scheme provides an implant antenna, the packaging structure of any one antenna above is as implant antenna, to connect with implant body.

[0025] The utility model discloses still another technical scheme provides an implant, including the implant body of connection and the packaging structure of any one antenna above, the packaging structure has one or more, and the packaging structure constitutes the partial feature structure of implant.

[0026] Optionally, the implant is provided with other devices connected with the antenna main body in the packaging structure through antenna cable, including sensor, or signal processing chip, or capacitor, or circuit assembly including at least one of sensor, signal processing chip and capacitor.

[0027] Optionally, the implant is any kind of implant with monitoring requirement, and can carry out wireless signal transmission with the reader -writer through the antenna in the packaging structure.

[0028] Optionally, the implant includes any one of the following: femoral stem, acetabular cup, interbody fusion cage, femoral condyle, tibial plateau, patella, artificial cone, artificial intervertebral disc, nail rod system, ankle joint, shoulder joint, elbow joint, finger joint, toe joint, intervertebral small joint, mandibular joint, wrist joint, artificial tooth root, metal bone nail / bone plate, metal intramedullary nail / needle, wire anchor, wire fixation plate, interspinous implant, temporomandibular joint, filler, femoral head necrosis reconstruction rod.

[0029] Compared with the prior art, the implant, implant antenna and packaging structure thereof of the utility model have at least the following technical effects:

[0030] The prior art integrates and packages the antenna with other devices, which is large in size, limits the position where it can be installed, and can only be connected with the implant as an accessory, otherwise the structure or function of the implant itself will be affected. The utility model separates the antenna from other devices and individually packages the antenna, which greatly reduces the size of the packaging structure, facilitates the assembly of the packaging structure on the implant body, and becomes a part of the feature structure of the implant, without changing the original shape of the implant and affecting the function implementation. The utility model further increases the function of the implant, that is, wireless information transmission with the external reader -writer.

[0031] If the packaging structure is made into one body, it needs to be realized through the process of inlaid injection molding, but the process has a higher temperature, which may cause damage to the antenna to be packaged. Therefore, the utility model sets up two relatively packaging bodies, facilitates the installation and packaging of the antenna, and realizes the close combination and airtight connection of the two packaging bodies under the cooperation of the material selection, structure design and connection technology of the two packaging bodies, effectively preventing the invasion of tissue fluid between the two packaging bodies.

[0032] For polyethylene or PEEK material that can be used in the implant industry, how to achieve reliable sealing effect when used for antenna packaging is a technical difficulty. The utility model discloses the docking structure of mutual matching and close contact is arranged to the two packaging bodies of antenna ( can further be set as corresponding trapezoidal structure to docking groove and docking flange), and the close contact surface is arranged respectively on the inside and the outside of docking structure, forms the labyrinth of multiple sealing sections, improves the airtight performance between packaging body.

[0033] In the preferred example of the utility model, by the low melting point characteristics of polyethylene material and the like, at lower temperature, through the mode of heating and hot pressing, two packaging bodies can be tightly combined and airtightly connected, and the airtight performance is improved.

[0034] The prior art antenna and other device integrated packaging have a large volume, can only be designed as a single antenna, and limit the number and function of the antenna. Since the antenna is separately packaged and has a small volume, the utility model can be used for distributed multi-antenna design on the implant; for example, through redundancy design, if one of the antennas does not work, there is still a normally working antenna; for example, a larger reading range can be provided for the reader, and the dead angle area is reduced; for example, different data can be transmitted by multiple antennas, and the application scenarios of the implant with monitoring demand and wireless signal transmission demand are expanded. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic view of the prior art antenna and other device integrated packaging as an implant accessory.

[0036] Figure 2 is Figure 1 is a structural schematic view of the prior art antenna and other device integrated packaging.

[0037] Figure 3 is an exploded schematic view of the packaging structure of the implant antenna of the utility model.

[0038] Figure 4 is a side cross-sectional schematic view of the packaging structure of the implant antenna of the utility model.

[0039] Figure 5 is a schematic view of an embodiment structure of the implant and the antenna thereof of the utility model.

[0040] Figure 6 is a schematic view of another embodiment structure of the implant and the antenna thereof of the utility model.

[0041] Figure 7 is a schematic view of still another embodiment structure of the implant and the antenna thereof of the utility model. DETAILED DESCRIPTION

[0042] The utility model discloses a specific embodiment in connection with the drawings.

[0043] The antenna of the utility model is encapsulated separately, can be connected to the implant body and constitutes part of the feature structure of the implant, does not need to change the original shape of the implant, and does not affect the original function realization of the implant.

[0044] Therefore, an encapsulation structure of an antenna is provided, as shown in Figure 3 、 Figure 4 The first encapsulation body 21 is internally formed with a recess space 24 for placing the antenna body 11. The antenna body 11 of the example has a serpentine layout, but this is not a limitation on the arrangement of the antenna body 11.

[0045] The surface of the first encapsulation body 21 opposite to the second encapsulation body 31 is formed with a surrounding barrier 25 at the periphery of the recess space 24; the surrounding barrier 25 is externally surrounded by a circle of abutment grooves 23. The second encapsulation body 31 is provided with a circle of abutment flanges 33, which are matched with the abutment grooves 23 and can be embedded into the abutment grooves 23 when the two encapsulation bodies are abutted. The abutment flanges 33 divide the surface of the second encapsulation body 31 opposite to the first encapsulation body 21 into a middle region 34 surrounded by the abutment flanges 33 and an edge region 35 located outside the abutment flanges 33.

[0046] When the two encapsulation bodies are abutted, the middle region 34 of the second encapsulation body 31 further comprises two parts inside and outside, the second part 34-2 outside is in close contact with the limiting surface 26 of the surrounding barrier 25, and the first part 34-1 inside is opposite to the opening of the recess space 24 and shields the opening, that is, a closed space enclosing the antenna body 11 is formed by cooperation of the recess space 24, the side surface of the surrounding barrier 25 and the first part 34-1 inside of the middle region 34.

[0047] For example, the abutment grooves 23 are not adjacent to the outer boundary of the first encapsulation body 21, but a peripheral region 27 is further formed between the abutment grooves 23 and the outer boundary of the first encapsulation body 21, the peripheral region 27 is opposite to the edge region 35 of the second encapsulation body 31, and the two are in close contact when the two encapsulation bodies are abutted.

[0048] When the first encapsulation body 21 is abutted with the second encapsulation body 31, the opposite surfaces of the peripheral region 27 and the edge region 35 are in close contact, the abutment grooves 23 and the abutment flanges 33 are in close contact, and the limiting surface 26 and the surface of the middle region 34 outside are in close contact, so that from the outer boundary to the closed space in the middle, a plurality of sealing sections in a meandering and tortuous manner are formed by the assembly surfaces of these parts, and the sealing performance of the closed space is improved.

[0049] For example, the inner side wall (the side close to the recess space 24) and the outer side wall (the side away from the recess space 24) of the docking groove 23 are respectively provided as inclined surfaces, so that the docking groove 23 is a trapezoidal groove. In the example shown, the opening width of the docking groove 23 is greater than the groove bottom width, but in other examples not shown, the opening width of the docking groove 23 can be less than the groove bottom width. The docking flange 33 is a trapezoidal flange matching the docking groove 23, and the inner side wall and the outer side wall of the docking flange 33 are inclined surfaces matching the inner side wall and the outer side wall of the docking groove 23. Thus, when the docking flange 33 is inserted into the docking groove 23, the connection of the two is more secure, and the sealing effect is better.

[0050] The antenna body 11 has an interface end connected to one end of the antenna cable 12, and the antenna cable 12 passes through the passages provided on the same side of the first encapsulating body 21 and the second encapsulating body 31, so that the other end of the antenna cable 12 is connected to other devices outside the encapsulating structure. The passage includes a first guide groove 22 provided on the surface of the first encapsulating body 21 opposite the second encapsulating body 31, and a second guide groove 32 provided on the surface of the second encapsulating body 31 opposite the first encapsulating body 21.

[0051] The first guide groove 22 is connected to the recess space 24 through the outer boundary of the first encapsulating body 21, the peripheral area 27, the docking groove 23, and the barrier 25, and carries the antenna cable 12 placed therein. The second guide groove 32 is connected to the first part 34-1 of the middle area 34 close to the inside through the outer boundary of the second encapsulating body 31, the edge area 35, the docking flange 33, and the second part 34-2 of the middle area 34 close to the outside. Therefore, when the first encapsulating body 21 and the second encapsulating body 31 are docked, the first guide groove 22 and the second guide groove 32 can be engaged to form a complete passage. For example, the caliber of the passage can be set according to the outer diameter of the antenna cable 12, so that the inner wall of the passage can closely fit the antenna cable 12.

[0052] The antenna encapsulating structure described above needs to be assembled to the implant body and placed in the human body, and compared with other application scenarios, the implant, especially the joint implant, is very cautious in the application of materials (based on the consideration of biological safety), and at the same time, the appearance shape of the encapsulating structure needs to be constructed according to the characteristic structure of the implant. The material of the encapsulating structure should have good plasticity to be applied to various implants and meet the different characteristic requirements of various implants. The material of the encapsulating structure should not have negative effects such as signal shielding or attenuation on the antenna. Therefore, to meet the above requirements, the first encapsulating body 21 and the second encapsulating body 31 of the utility model are made of polymers, such as ultra-high molecular weight polyethylene (UHMWPE) or polyether ether ketone (PEEK).

[0053] In one aspect, the design of the assembly surfaces of each section between the first encapsulating body 21 and the second encapsulating body 31 in structure, layout, etc. is such that when the two encapsulating bodies are butted against each other, the corresponding assembly surfaces (the opposite surfaces of the peripheral region 27 and the edge region 35, the butting groove 23 and the butting flange 33, the limiting surface 26 and the surface of the outer part of the intermediate region 34) can be tightly fitted. In another aspect, since the first encapsulating body 21 and the second encapsulating body 31 are made of polymer, after the two encapsulating bodies are butted against each other, the first encapsulating body 21 and the second encapsulating body 31 can be heated and pressed, so that firm combination is formed between the assembly surfaces, without causing deformation of the overall structure of the first encapsulating body 21 and the second encapsulating body 31. The antenna main body 11 is placed in the groove space 24 of the first encapsulating body 21, and the opening of the groove space 24 is shielded by the part of the surface of the intermediate region 34 of the second encapsulating body 31, so the antenna main body 11 does not contact the assembly surfaces of the two encapsulating bodies, and the heating and pressing combination of the assembly surfaces will not affect the antenna main body 11.

[0054] Meanwhile, through the heating and pressing method, the first guide groove 22 and the second guide groove 32, which constitute the placement channel of the antenna cable 12, of the two encapsulating bodies can be firmly combined, and the inner wall of the combined channel can be tightly pressed against the surface of the antenna cable 12, so that the sealing of the channel can be achieved without additional sealing components.

[0055] Thus, the first encapsulating body 21 and the second encapsulating body 31 are firmly combined, and the encapsulating structure has good sealing performance, so that after being implanted into the human body together with the implant body, the encapsulating structure can effectively prevent the invasion of tissue fluid, etc. from the outside into the sealed space where the antenna main body 11 is placed.

[0056] It should be noted that the heating and pressing method for connecting the two encapsulating bodies is a preferred example, but it is not limited to the connection method between the two encapsulating bodies. For example, in other examples, the assembly surfaces of the first encapsulating body 21 and the second encapsulating body 31 can be firmly combined and sealed by means of implantable glue bonding or ultrasonic welding.

[0057] The encapsulating structure of the antenna can be combined with the implant body by any suitable connection method under implantation conditions. For example, the encapsulating structure of the antenna can be bonded to the implant body; or matching connection structures can be formed on the implant body and the encapsulating structure, and the form and number of the connection structures are not limited by the present application. The encapsulating structure is made of polymer, and thus the required connection structure can be formed on the surface where the encapsulating structure is connected to the implant body.

[0058] The implant can be any kind of implant with wireless signal transmission requirement, for example, any one of the following, and is not limited to: femoral stem, acetabular cup, intervertebral fusion cage, artificial cone, artificial intervertebral disc, nail rod system, femoral condyle, tibial plateau, patella, spinal prosthesis, ankle joint, shoulder joint, elbow joint, finger joint, toe joint, intervertebral small joint, mandibular joint, wrist joint, artificial tooth root, metal bone nail / bone plate, metal intramedullary nail / needle, wire anchor, wire fixation plate, interspinous implant, temporomandibular joint, filler, femoral head necrosis reconstruction rod, and other various implants with monitoring requirements during implant surgery or postoperative.

[0059] Taking a joint implant as an example, Figure 5 、 Figure 6 is a tibial tray 41 in a knee joint implant, which comprises a tibial tray body 42 connected with an antenna packaging structure 101. The tibial tray body 42 is preformed or formed by subsequent processing to form one or more regions that can be used to connect the packaging structure 101.

[0060] In this example, the tibial tray body 42 comprises a bearing platform and a fixing column at the bottom thereof; the proximal end surface of the bearing platform serves as a mating surface 43 of the tibial tray 41 with a tibial pad (not shown); the edge of the bearing platform is formed with a raised side wall around the periphery of the mating surface 43, and the antenna packaging structure 101 arranged on the tibial tray body 42 can be arranged within the range of the side wall (the packaging structure 101 can be arranged in sections); that is, one or more parts of the side wall of the bearing platform belong to the packaging structure 101 of the antenna, and the remaining parts of the side wall belong to the tibial tray body 42, and the packaging structure 101 and the part of the tibial tray body 42 adjacent thereto combine to form a complete side wall.

[0061] In this way, through the combination of the packaging structure 101 of the antenna and the tibial tray body 42, the appearance shape of the tibial tray 41 as an implant does not need to be changed, and the function is not affected, and wireless signal transmission with an external reader can also be realized through a separately packaged antenna. The packaging structure 101 of the example not only can take into account the function of appearance coordination, but also can form a complete side wall with other parts of the edge of the bearing platform to enclose the wear particles generated on the mating surface 43. That is, after the tibial pad is installed in the tibial tray 41, micro-motion will occur at the mating surface 43, and the micro-motion will cause the generation of wear particles, and the peripheral side wall can confine the wear particles between the tibial pad and the tibial tray 41, and the wear particles will not scatter into the joint capsule.

[0062] As Figure 7As shown, the femoral condyle 51 in the knee joint implant is taken as an example, which comprises a femoral condyle body 52 connected with an antenna packaging structure 102. When the femoral condyle 51 is implanted into the distal end of the femur in surgery, the positioning of the medial and lateral sides of the femoral condyle 51 is realized by the positioning column. In this example, the antenna packaging structure 102 is arranged in the form of the positioning column, which is combined with the femoral condyle body 52, and when implanted into the femur, the positioning function of the femoral condyle 51 can still be realized through the antenna packaging structure 102. Therefore, the appearance shape of the femoral condyle 51 as an implant does not need to be changed, and the function is not affected, and wireless signal transmission with the external reader can also be realized through the separately packaged antenna.

[0063] The implant of the utility model can also adopt a distributed multi-antenna design, and multiple antenna packaging structures are arranged at different positions of the implant, so that multiple antennas are arranged.

[0064] For example, on the tibial tray body 42 of the above example, the side walls on both sides of the mating surface 43 can be respectively provided with an antenna packaging structure 101, as shown in Figure 5 ; or, one or more antenna packaging structures 101 can be arranged on the same side, as shown in Figure 6 . For another example, Figure 7 The femoral condyle body 52 of the example is connected with two antenna packaging structures 102 as positioning columns.

[0065] When multiple antennas are configured for an implant, the appearance of the packaging structure of each antenna can be the same or different, and the connection structure can be the same or different, which can be determined according to the position of the implant where each packaging structure is arranged. Each antenna itself can also have the same or different design.

[0066] For example, the directivity of the antenna can be the same or different; when the antenna points in different directions, the external reader can work when it is in different directions. The frequency of the antenna can be the same or different; when the frequencies of the antennas are different, if a certain frequency cannot work, the antenna with another frequency can be switched to work for signal transmission; or, due to the different positions of the antenna packaging structures on the implant, the situation after being implanted into the human body is different, and different frequencies are configured, for example, on the same implant, some antenna packaging structures are located subcutaneously, and high frequencies with slightly poor penetration ability can be used; some antenna packaging structures are located inside the bone tissue, and high frequencies with strong penetration ability are required.

[0067] Or, the functions of the antennas can be the same or different. For example, some antennas are used as receiving antennas, and some antennas are used as transmitting antennas; or each antenna can transmit and receive information. For example, when arranged as a redundant structure, the antennas can be connected to the same or different elements; when the antennas are connected to the same elements, the antennas serve as backups for each other; when the antennas are connected to different elements, each combination of the antennas and elements can be used independently, so that the antennas and elements have corresponding backups. For example, different antennas are used to transmit the same or different information; for example, the elements connected by the antennas transmit different information (for example, different monitoring data obtained from different sensors is transmitted externally), or the elements connected by the antennas are the same but different information is transmitted through different antennas (for example, different antennas obtain different information from external readers and write, but transmit the information to the same signal processing chip for processing; or, the signal processing chip obtains different monitoring data from different sensors for transmission preparation, and then transmits the data to the outside through different antennas). For example, the antennas can work simultaneously or at different times; when the antennas work at different times, the antennas can work at different times to avoid signal interference; or the antennas are configured in a manner that different antennas work as main antennas and standby antennas, until the main antennas fail or reach a set time, and then the main antennas work as standby antennas and the standby antennas work as main antennas; or the antennas only work when the elements connected to the antennas need to transmit and receive data, and the antennas are in standby mode at other times.

[0068] As an example but not limitation, the antenna main body 11 in the packaging structure described in the utility model, other devices connected by the antenna cable 12, for example, are sensors, or signal processing chips, or circuit assemblies containing sensors, signal processing chips, memories, capacitors, power management chips, etc. at the same time. These devices can be packaged separately or together, and the separately packaged devices can be placed in the same part of the implant or placed in different parts. The recesses or holes that can be pre-processed on the implant body are used to place these devices. These devices can be arranged according to the load on the implant, for example, the recesses or holes in which the devices are placed are opened in the part of the implant body where the load is small. Alternatively, these devices can be packaged in a similar structure to the antenna packaging structure and connected to the implant body. For example, the positions of these devices are determined according to their functions, such as sensors that can be arranged separately near the target object to be monitored to facilitate accurate and timely acquisition of monitoring data.

[0069] The sensor can measure various physical states such as stress / strain, pressure, temperature, motion state (speed, displacement, etc.), and various chemical states such as pH value, type of bacteria when the implant is infected, etc. The data collected by the sensor can give a warning prompt for whether there is an infection or loosening that may lead to implant failure. The data collection operation of the sensor can be enabled after the operation or during the implantation operation. Intraoperative monitoring, for example, some parameters involved in the installation of the implant are monitored by the sensor. The installation parameters are used to analyze whether the implant is installed in place so that the medical staff can adjust during the operation to improve the success rate of implantation.

[0070] Taking a pressure sensor as an example, the detection result of the sensor can analyze the pressure distribution between the bone interface (such as the cut surface of the implanted site) and the surface of the implant in contact with it, so as to judge the fit of the implant and the bone interface, the stress distribution of the inside and outside of the implant, etc. The sensor is started during the operation to perform related monitoring. For uneven pressure distribution, poor fit, etc., it can be discovered in time, and the fastest adjustment and solution can be made during the operation; these sensors can also be used after the operation (short-term and / or long-term) to discover signs of implant loosening as soon as possible and give a warning. Therefore, in some examples, the sensor is installed on the implant as close as possible to the bone interface for monitoring.

[0071] The signal processing chip and its auxiliary elements, etc. can process the data collected by the sensor, and can also process the data transmitted between the antenna and the external reader / writer, such as encoding, modulating, amplifying the information to be transmitted, transmitting it to the antenna main body 11 through the antenna cable 12 and transmitting it externally, amplifying, filtering, demodulating, decoding, etc. The information of the chip received by the antenna main body 11 is processed to recover the data sent by the external reader / writer. The memory can store various data in the working process of the sensor and / or signal processing chip, which can be temporary storage or long-term storage. The capacitor is used for impedance matching, filtering, signal coupling and isolation, etc. to improve the signal transmission characteristics. The power management chip is responsible for adjusting and distributing the power supply to ensure that the device that needs it can obtain appropriate power supply. Energy storage elements such as batteries can be provided on the implant for power supply, or elements suitable for wired or wireless charging can be provided for power supply.

[0072] In summary, the utility model provides a kind of packaging structure to antenna individual packaging, can reduce volume, to be assembled to implant body as a kind of implant antenna, constitute a complete implant;Through the material selection of packaging body, and in the assembly surface structure of packaging body and its combination mode cooperation, make packaging structure have good sealing performance, and can be according to the characteristic structure requirement of implant, the connection condition etc.

[0073] Although the content of the utility model has been introduced in detail by the above preferred embodiment, it should be recognized that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and alternatives of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. An encapsulation structure of an antenna, characterized in that, the encapsulation structure comprises a first encapsulation body and a second encapsulation body connected together; the first encapsulation body has a first surface, and the second encapsulation body has a second surface opposite to the first surface; the first surface of the first encapsulation body is provided with a recessed space for placing an antenna main body, and is provided with a mating groove around the periphery of the recessed space; the second surface of the second encapsulation body is provided with a mating flange, which is matched with the mating groove and embedded in the mating groove; the intermediate area of the second surface surrounded by the mating flange has a first part opposite to the opening of the recessed space, which is used to shield the opening.

2. The encapsulation structure according to claim 1, characterized in that, the first surface of the first encapsulation body is formed with a barrier, which surrounds the recessed space; the mating groove surrounds the barrier; the intermediate area of the second surface of the second encapsulation body has a second part located at the periphery of the first part, which is opposite to and in close contact with the limiting surface of the barrier; the recessed space, the side surface of the barrier and the first part of the intermediate area cooperate to form a closed space, in which the antenna main body is enclosed.

3. The encapsulation structure according to claim 1, characterized in that, the first surface of the first encapsulation body further comprises a peripheral area between the mating groove and the outer boundary of the first encapsulation body; the second surface of the second encapsulation body further comprises an edge area outside the mating flange; the peripheral area is opposite to and in close contact with the edge area.

4. The encapsulation structure according to claim 1, characterized in that, the mating flange is in close contact with the mating groove when it is embedded in the mating groove; the mating groove is a trapezoidal groove; the mating flange is a trapezoidal flange matched with the mating groove; the inner side wall of the mating groove and the inner side wall of the mating flange are matching bevels; the outer side wall of the mating groove and the outer side wall of the mating flange are matching bevels.

5. The encapsulation structure according to claim 1, characterized in that, an interface end of the antenna main body is connected with one end of an antenna cable, the antenna cable passes through a channel cooperatively arranged on the same side of the first encapsulation body and the second encapsulation body, and the other end of the antenna cable is connected with other devices outside the encapsulation structure; a first guide groove arranged on the first surface is buckled with a second guide groove arranged on the second surface, so as to form the channel; the inner wall of the channel is in close contact with the antenna cable.

6. The encapsulation structure according to any one of claims 1-5, characterized in that, the first encapsulation body and the second encapsulation body are respectively made of a polymer; the polymer comprises ultra-high molecular weight polyethylene or polyether ether ketone.

7. The encapsulation structure according to claim 6, characterized in that, the first encapsulation body and the second encapsulation body are connected by heat pressing, bonding or ultrasonic welding, so as to form airtight connection between the surfaces in close contact on the first encapsulation body and the second encapsulation body.

8. An implant antenna, characterized in that, The packaging structure of the antenna according to any one of claims 1-7, as an implant antenna, is connected with an implant body.

9. An implant, characterized in that, The packaging structure of the antenna according to any one of claims 1-7, as an implant antenna, is connected with an implant body.

10. The implant according to claim 9, wherein, The implant is provided with other devices connected with the antenna body in the packaging structure through an antenna cable, including a sensor, or a signal processing chip, or a capacitor, or a circuit assembly including at least one of a sensor, a signal processing chip, and a capacitor; The implant is any kind of implant with monitoring needs, and can perform wireless signal transmission with a reader / writer through the antenna in the packaging structure; The implant includes any one of the following: a femoral stem, an acetabular cup, an intervertebral fusion cage, a femoral condyle, a tibial plateau, a patella, an artificial cone, an artificial intervertebral disc, a nail-rod system, an ankle joint, a shoulder joint, an elbow joint, a finger joint, a toe joint, an intervertebral small joint, a mandibular joint, a wrist joint, an artificial tooth root, a metal bone nail / bone plate, a metal intramedullary nail / needle, a suture anchor, a suture fixation plate, an interspinous implant, a temporomandibular joint, a filler, and a femoral head necrosis reconstruction rod.

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