Implant and antenna packaging structure with implant feature structure

Abstract

The utility model provides an implant and an antenna packaging structure with an implant feature structure. The antenna packaging structure is used for packaging an antenna; the antenna packaging structure has a partial feature structure of an implant and can be connected with an implant body to obtain a complete structure of the implant. According to the utility model, the antenna is separated from other devices, and the antenna is packaged independently, so that the size is reduced. The implant is more compact in structure and better in sealing performance, additional accessories are not needed, the overall structure or function of the implant is not changed, the function of wireless information transmission with an external reader-writer can be added for the implant, and the application scene of the implant is expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to an implant and an antenna packaging structure with implant feature structure. BACKGROUND

[0002] At present, the implant with wireless signal transmission function generally integrates the antenna and other devices such as chip together for packaging, which leads to large volume and limits the area that can be placed on the implant, so that the implant can only be connected with the accessory.

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

[0004] Because the signal processing device 940 encapsulates the antenna 945, electronic components 943, and battery 942 together, the signal processing device 940 is relatively large, which greatly limits its placement on the tibial support assembly 920. For example, it cannot affect the integration of the implant with the bone tissue, and it is also necessary to consider various factors such as the mechanical properties of the implant itself, the implantation space at the tibia, intraoperative procedures, postoperative recovery, and long-term use. For example, originally, only the implantation depth of the distal end of the tibial support 930 needed to be considered, and a pre-drilled hole of the corresponding depth was made in the tibia 900. However, due to the inclusion of the relatively large signal processing device 940, although its sleeve 941 could be made cylindrical to be inserted into the pre-drilled hole to assist in fixing the tibial support assembly 920, the antenna 945 required a certain length to meet its signal transmission and reception performance requirements. The length of the signal processing device 940 was difficult to reduce, necessitating an increase in the depth of the pre-drilled hole in the tibia 900 to form an extension 910 for housing this additional accessory. This not only increased the complexity of the implantation surgery but could also lead to a longer postoperative recovery period for the patient. This layout also limited the directional setting of the antenna 945, preventing the provision of an optimal angle and affecting signal transmission performance. Furthermore, it was difficult to increase the number of antennas 945, otherwise the overall structure would be even larger. Having only a single antenna 945 resulted in lower anti-interference and fault tolerance capabilities for the signal processing device 940. If the antenna 945 malfunctioned or its performance deteriorated, it would significantly impact the normal operation of the signal processing device 940. Utility Model Content

[0005] The purpose of this invention is to provide an implant and an antenna packaging structure with implant-specific features, which separates the antenna from other devices and packages the antenna separately to reduce its size; the antenna packaging structure has some of the implant-specific features and is assembled with the implant body to realize the corresponding functions of the implant.

[0006] To achieve the above objectives, one technical solution of this utility model is to provide an antenna packaging structure with implant feature structures, wherein the antenna packaging structure is used to package an antenna; the antenna packaging structure has some feature structures of the implant; and the antenna packaging structure is connected to the implant body to obtain the complete structure of the implant.

[0007] Optionally, the antenna packaging structure includes a first package and a second package connected to each other;

[0008] The first package has a first surface, and the second package has a second surface opposite to the first surface; the first surface of the first package is provided with a groove space for placing the antenna body; the middle part of the second surface is opposite to the opening of the groove space and is used to cover the opening.

[0009] Optionally, the rest of the second surface except the intermediate part is in close contact with the rest of the first surface except the groove space.

[0010] Among the rest of the first surface and the rest of the second surface, one is provided with a mating groove, and the other is provided with a mating flange which can be embedded into the mating groove and in close contact with the mating groove.

[0011] Optionally, 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, and the outer side wall of the mating groove and the outer side wall of the mating flange are matching bevels.

[0012] Optionally, the interface end of the antenna body is connected with one end of an antenna cable, the antenna cable passes through the channel of the first encapsulating body and the second encapsulating body which are matched and arranged on the same side, and the other end of the antenna cable is connected with other devices outside the antenna encapsulating structure.

[0013] Optionally, the first guide groove arranged on the first surface is buckled with the second guide groove arranged on the second surface to form the channel, and the inner wall of the channel is in close contact with the antenna cable.

[0014] Optionally, the first encapsulating body and the second encapsulating body are respectively made of a polymer.

[0015] Optionally, the polymer comprises ultra-high molecular weight polyethylene or polyether ether ketone.

[0016] Optionally, the first encapsulating body and the second encapsulating body are connected by heat pressing, bonding or ultrasonic welding to realize airtight connection between the surfaces in close contact on the first encapsulating body and the second encapsulating body.

[0017] Optionally, the antenna encapsulating structure and the implant body are connected through corresponding connecting structures, and the corresponding connecting structures comprise a pin body and a pin hole for corresponding insertion of the pin body, or a flange and a groove for corresponding insertion of the flange, or a connecting part with external threads and a connecting hole with internal threads.

[0018] Another technical scheme of the utility model provides an implant, which comprises an implant body and an antenna encapsulating structure as any one of the above, the antenna encapsulating structure is one or more, the encapsulating structure has part of the characteristics of the implant, and the antenna encapsulating structure and the implant body are connected to obtain the complete structure of the implant.

[0019] Optionally, when the implant is arranged with multiple antennas through multiple antenna encapsulating structures, the multiple antennas satisfy any one of the following conditions:

[0020] the multiple antennas have the same directivity, or at least one antenna has different directivity from the other antennas;

[0021] the multiple antennas have the same frequency, or at least one antenna has different frequency from the other antennas;

[0022] the multiple antennas have the same function, or at least one antenna has different function from the other antennas;

[0023] the multiple antennas are connected to the same device, or at least one antenna is connected to a different device from the other antennas;

[0024] the multiple antennas have the same information transmission mode, or at least one antenna has different information transmission mode from the other antennas; the information transmission mode includes receiving wireless signals, or transmitting wireless signals, or both receiving and transmitting wireless signals;

[0025] the multiple antennas work simultaneously, or at least one antenna does not work simultaneously with the other antennas.

[0026] Optionally, the antenna packaging structure is arranged in a low stress area of the implant.

[0027] Optionally, the implant is provided with other devices connected to the antenna main body in the antenna 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 the sensor, the signal processing chip, and the capacitor.

[0028] Optionally, the other devices are arranged in a low stress area of the implant.

[0029] Optionally, 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 antenna packaging structure.

[0030] Optionally, the implant includes any of the following: femoral stem, acetabular cup, intervertebral 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, suture anchor, suture fixation plate, interspinous implant, temporomandibular joint, filler, femoral head necrosis reconstruction rod.

[0031] Compared with the prior art, the implant and the antenna packaging structure with implant features of the present application have at least the following technical effects:

[0032] The prior art is mainly based on kinematics, mechanics and anatomy, without considering the application scene of the antenna and the chip, and is also limited by the packaging technology, so that the antenna and other devices can only be integrated and packaged, so that the volume of the whole packaging structure is large, the installation position is limited, and the implant can only be connected as an accessory, otherwise the structure or function of the implant itself will be affected.

[0033] The antenna and other devices are separated in the utility model, the antenna is packaged alone, the volume of the packaging structure is greatly reduced, the antenna is assembled on the implant body, becomes a part of the implant, the original shape of the implant is not changed, the function is not affected, and the implant is provided with the function of wireless information transmission with the external reader. If the space allows, other circuit elements such as sensors can be placed nearby. Therefore, the implant structure is more compact, no extra bone cutting is needed, more bone mass can be reserved, the operation is simpler, and recovery is more beneficial; the antenna packaging structure is part of the implant, so no additional accessory needs to be installed before the operation.

[0034] If the packaging structure is made into one body, the inlay injection molding process needs to be used, but the process has a higher temperature, which may damage 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 and connection technology of the two packaging bodies, so that the invasion of tissue fluid into the two packaging bodies is effectively prevented.

[0035] For polyethylene or PEEK materials that can be used in the implant industry, how to realize reliable sealing effect when used for antenna packaging is a technical difficulty. The utility model sets up a docking structure (the docking groove and the docking flange can be further set as corresponding trapezoidal structures) that is matched and closely contacted for the two packaging bodies of the antenna, so as to improve the airtight performance between the packaging bodies.

[0036] In the preferred example of the utility model, the low melting point of polyethylene material and the like is used, and the two packaging bodies can be closely combined and airtightly connected through the hot-pressing method at a lower temperature, so as to improve the airtight performance.

[0037] In the preferred example of the utility model, the strong plasticity of the polymer is used, and the appearance form of the antenna packaging structure and the connecting structure can be flexibly set according to the requirements of the implant feature structure, the form of the installation position on the implant body and the connection requirements, so that the antenna packaging structure fills the installation position after being assembled to the implant body, and the complete structure of the implant is obtained.

[0038] In the preferred example of the utility model, the antenna packaging structure, sensors and other devices are arranged on the low-stress area of the implant which does not need to bear load or bears less load, and the stress of the relevant parts is small during long-term use, and the structural stability and function of the implant are not adversely affected.

[0039] The prior art antenna and other device integrated packaging volume is large, and only single antenna design can be made, which limits the number and function of the antenna. Since the antenna is packaged separately and the volume is small, the utility model can be used for distributed multi-antenna design on the implant; for example, through redundancy design, it is ensured that if one of the antennas does not work during long-term implantation, 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, which expands the application scenarios of the implant with monitoring demand and wireless signal transmission demand. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a schematic view of the prior art antenna and other device integrated for use as an implant accessory.

[0041] Figure 2 is Figure 1 is a structural schematic view of the prior art antenna and other device integrated.

[0042] Figure 3 is a schematic view of the tibial tray of the prior art.

[0043] Figure 4 is a schematic view of the femoral condyle of the prior art.

[0044] Figure 5 is a schematic view of an embodiment structure of the tibial tray and its antenna of the utility model.

[0045] Figure 6 is a schematic view of another embodiment structure of the tibial tray and its antenna of the utility model.

[0046] Figure 7 is a schematic view of a connection structure of the tibial tray body and the antenna of the utility model.

[0047] Figure 8 is a schematic view of another connection structure of the tibial tray body and the antenna of the utility model.

[0048] Figure 9 is a schematic view of an embodiment structure of the femoral condyle and its antenna of the utility model.

[0049] Figure 10 is a schematic view of a connection structure of the femoral condyle body and the antenna of the utility model. DETAILED DESCRIPTION

[0050] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0051] The present invention provides an antenna packaging structure that encapsulates the antenna separately, giving the packaging structure some of the features of the implant. This allows the antenna to be connected to the implant body without altering the original shape of the implant or affecting its original function.

[0052] Compared to other applications, implants, especially joint implants, require very careful material selection due to the need for implantation in the human body (due to biosafety considerations). Furthermore, the antenna encapsulation structure's shape must be tailored to the implant's structural characteristics. The material of this encapsulation structure should possess good shaping capabilities to accommodate various implants and meet their diverse requirements. The material must also not negatively impact signal shielding or attenuation. To meet these requirements, this invention utilizes a polymer-based encapsulation structure to encapsulate the antenna, such as ultra-high molecular weight polyethylene (UHMWPE) or polyetheretherketone (PEEK).

[0053] The packaging structure of this utility model includes two packaging bodies. The first packaging body has a first surface, and the second packaging body has a second surface opposite to the first surface. A groove space for placing the antenna body is formed on the first surface of the first packaging body. When the two packaging bodies are docked, the middle part of the second surface of the second packaging body is opposite to the opening of the groove space and closes the opening. The remaining part of the second surface matches and tightly fits the remaining area of ​​the first surface except for the groove space, thereby encapsulating the antenna body in the sealed space between the two packaging bodies.

[0054] For example, a mating groove can be formed on the first surface of the first package to surround the periphery of the recessed space, and a matching mating flange can be formed on the second surface of the second package (or the positions of the mating groove and the mating flange can be interchanged). The corresponding mating flange is embedded into the mating groove and the two are tightly joined to improve the sealing performance.

[0055] The mating flange and mating groove can be designed as matching trapezoidal structures, i.e., the mating groove is a trapezoidal groove, and the mating flange is a trapezoidal flange. The inner sidewalls of the mating groove and the mating flange form a pair of corresponding inclined surfaces, and the outer sidewalls of the mating groove and the mating flange form another pair of corresponding inclined surfaces (the inner side is the side closer to the groove space, and the outer side is the side farther from the groove space). In different examples, the opening of the trapezoid can be larger or smaller than the base of the trapezoid. This results in a stronger connection and better sealing at the joint between the mating flange and the mating groove.

[0056] The interface end of the antenna main body is connected with one end of the antenna cable, the antenna cable passes through the channel arranged on the same side of the first encapsulating body and the second encapsulating body, and the other end of the antenna cable can be connected with other devices outside the encapsulating structure.

[0057] The first encapsulating body and the second encapsulating body are both made of the polymer, so that the first encapsulating body and the second encapsulating body can be heated and pressed after being connected, firm combination is formed between the surfaces of the two encapsulating bodies, and meanwhile, the overall structure of the first encapsulating body and the second encapsulating body will not be deformed. The antenna main body is arranged in the recessed space of the first encapsulating body, and the opening of the recessed space is shielded by the surface of the middle part of the second encapsulating body, so that the antenna main body will not touch the contact surface between the two encapsulating bodies, and the antenna main body will not be affected when the firm combination is implemented. Meanwhile, the first guide groove and the second guide groove constituting the antenna cable placing channel can be firmly combined by the heating and pressing mode, and the inner wall of the combined channel can be tightly pressed on the surface of the antenna cable, so that the sealing of the channel can be realized without additionally arranging a sealing component.

[0058] Therefore, the first encapsulating body and the second encapsulating body are firmly combined and have good sealing performance, and after being implanted into the human body together with the implant body, the encapsulating structure can effectively prevent the invasion of tissue fluid and the like from the outside into the sealed space in which the antenna main body is arranged. It should be noted that the heating and pressing mode is used to connect the two encapsulating bodies as a preferred example, but is not used to limit the connection mode between the two encapsulating bodies, for example, in other examples, the contact surface between the first encapsulating body and the second encapsulating body can be firmly combined and sealed by means of implantable glue bonding, ultrasonic welding or the like.

[0059] The implant comprises an implant body and an antenna packaging structure connected to each other, and the packaging structure has one or more; the implant body is reserved or formed by subsequent processing to have one or more mounting positions for connecting the packaging structure during manufacturing, for example, forming a certain gap or partition on the basis of the original structure of the implant, or omitting a certain component to form a mounting position, and a connecting structure for connecting the packaging structure can be arranged at the mounting position; since the antenna packaging structure is made of polymer and has strong plasticity, the corresponding appearance shape can be made according to the actual needs of the mounting position; after the antenna packaging structure is connected to the mounting position, the gap, partition or omitted component on the implant body can be filled, so that the antenna packaging structure has part of the feature structure of the implant, and the final shape and function of the implant will not be changed due to the setting of the antenna.

[0060] For example, the mounting position for arranging the antenna packaging structure is designed at a position of the original structure of the implant which does not need to bear load or bears less load, so that the stress of the related position is small during long-term use, and the structural stability and function of the implant will not be adversely affected. For example, through theoretical calculation or finite element analysis, a region of the implant which does not bear load or bears little load is selected as the mounting position.

[0061] In the step of selecting the specific region, the steps include:

[0062] a. According to the stress condition of the implant (referring to the test standard or clinical research literature), the loading condition and the constraint boundary condition of the implant are determined (simulating the force or load applied to the implant);

[0063] b. According to the complexity of the calculation model (such as considering factors such as geometric shape, boundary condition, material property, etc.), a theoretical calculation or finite element analysis method is selected;

[0064] c. The low-stress region of the implant is selected;

[0065] d. The reserved space of the corresponding mounting position is designed in the low-stress region (such as forming a gap, partition or omitting a certain component in one or more low-stress regions on the implant model), and the calculation analysis is performed again to determine whether the implant has a risk of damage when the reserved space is provided; if there is no risk of damage, the corresponding reserved space can be used as the mounting position and formed on the actual manufactured implant body; otherwise, the reserved space is adjusted to other positions, the shape of the reserved space is changed, etc.

[0066] The low stress area which does not need to bear load or bears less load can be screened on the implant through similar theoretical calculation or finite element analysis and steps thereof, and some recesses or holes or accommodation spaces are arranged on the implant body for placing other devices connected with the antenna body through the antenna cable. For example, the accommodation space for placing other devices can be arranged near the mounting position for connecting the antenna packaging structure to reduce interference and reduce signal loss in the transmission medium.

[0067] The antenna packaging structure of the utility model can be combined with the implant body through any suitable connecting mode of implantation. For example, the antenna packaging structure can be bonded to the implant body; or, corresponding matching connecting structures can be formed on the implant body and the packaging structure. The utility model does not limit the form and number of the connecting structures. For example, pin hole connection, pin slot connection, threaded connection and other connecting structures can be realized, and the utility model is not limited to this.

[0068] Since the packaging structure is made of polymer, various required connecting structures can be made on the surface of the packaging structure connected with the implant body. The material of the implant body assembled with the packaging structure is different from that of the packaging structure, for example, metal (but this is not a limitation on the material thereof); the part of the implant body for connecting the antenna packaging structure can be machined in various ways or the corresponding position is reserved when the implant body is manufactured to set the connecting structure.

[0069] For example, a protruding pin body is arranged on the antenna packaging structure, and a pin hole for corresponding insertion of the pin body is formed on the corresponding position of the implant body; for another example, a flange is arranged on the antenna packaging structure, and a groove for corresponding insertion of the flange is formed on the corresponding position of the implant body; for another example, a connecting part with external threads is arranged on the antenna packaging structure, and a connecting hole with internal threads is formed on the corresponding position of the implant body. In these examples, the protruding connecting structure is arranged on the antenna packaging structure, and the recessed connecting structure is arranged on the implant body. Thus, the implant body is less changed on the original structure of the implant, the structure of the implant body can be relatively complete, the mechanical properties are not obviously affected, and the processing technology of the implant body is relatively simplified, and the processing cost and difficulty are reduced. However, this is not a limitation on the design of the corresponding connecting structures between the antenna packaging structure and the implant body. The positions of the connecting structures can be interchanged in other examples, or other types of connecting structures can be used.

[0070] 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.

[0071] Taking a joint implant as an example, Figure 3 、 Figures 5 to 8 As shown in a tibial tray in a knee joint implant, Figure 3 is a primitive structure 41' of a tibial tray in the prior art, Figures 5 to 8 is a different embodiment structure of the tibial tray 41 described in the utility model. The tibial tray 41 of the utility model comprises a tibial tray body 42 connected with an antenna packaging structure 101. The tibial tray body 42 has one or more mounting positions that can be used to connect the packaging structure 101, corresponding to a low stress area on the tibial tray.

[0072] 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; that is, one or more parts of the side wall of the bearing platform belong to the antenna packaging structure 101, and the remaining parts of the side wall belong to the tibial tray body 42, and the parts of the packaging structure 101 and the tibial tray body 42 adjacent thereto combine to form a complete side wall.

[0073] Compared with the side walls 101' on the primitive structure 41' of the tibial tray shown in Figure 3 , in the utility model, Figure 5 two longer intervals are formed in advance on the side walls on both sides of the bearing platform as mounting positions, and the antenna packaging structure 101 has a matching appearance shape that can be embedded into the two intervals to fill the mounting positions, so that complete side walls are formed on both sides. In the utility model, Figure 6 , small notches of different sizes and numbers are respectively left on the side walls on both sides of the bearing platform as mounting positions, and the antenna packaging structure 101 has a matching appearance shape that can be embedded into each notch to fill the mounting positions, so that complete side walls are formed on both sides.

[0074] In order to connect the tibial tray body 42 and the antenna packaging structure 101,Figure 7 In the example, a plurality of pins 103 are formed in the antenna encapsulation structure 101, and a plurality of corresponding pin holes 44 are provided on the edge of the mating surface 43 of the tibial support body 42 for the corresponding pins 103 to be inserted to fix the antenna encapsulation structure 101 to the tibial support body 42. Figure 8 In the example, a flange 104 with a height of h is formed in the antenna encapsulation structure 101 (in the example not shown, it can be divided into several flange segments with intervals), and a groove 45 with a depth of h is correspondingly opened on the edge of the mating surface 43 of the tibia support body 42, so that the flange 104 can be inserted into it to fix the antenna encapsulation structure 101 to the tibia support body 42. Figure 7 , Figure 8 The connection structure is Figure 5 Taking the relatively long package structure 101 as an example, it can be understood that... Figure 6 The shorter package structures 101 can also be configured similarly. Figure 7 , Figure 8 The connection structure is used to connect to the tibial support body 42. If necessary, the connection can be further strengthened by applying an implantable adhesive between the various contact surfaces of the tibial support body 42 and the encapsulation structure 101.

[0075] By combining the antenna encapsulation structure 101 with the tibial support body 42, the appearance and function of the tibial support 41 as an implant remain unchanged. Furthermore, it can achieve wireless signal transmission with an external reader via a separately encapsulated antenna. In this example, the encapsulation structure 101 not only ensures aesthetic harmony but also forms a complete sidewall with other parts of the support platform edge, effectively sealing off wear particles generated on the mating surface 43. That is, after the tibial pad is inserted into the tibial support 41, micro-movements occur at the mating surface 43, leading to the generation of wear particles. The surrounding sidewall confines these particles between the tibial pad and the tibial support 41, preventing them from scattering into the joint capsule.

[0076] Figure 4 , Figure 9 , Figure 10 It is the femoral condyle in knee implants, among which, Figure 4 It is a primitive structure of the femoral condyle in the existing technology 51', Figure 9 , Figure 10 This is an embodiment of the femoral condyle 51 described in this utility model. The femoral condyle 51 of this utility model includes a connected femoral condyle body 52 and an antenna encapsulation structure 102. During surgery, when the femoral condyle 51 is implanted into the distal femur, the positioning of the medial and lateral sides of the femoral condyle 51 is achieved through positioning posts. In this example, the positioning post 102' on the original femoral condyle structure 51' is omitted from the femoral condyle body 52 (see...). Figure 4The antenna packaging structure 102 is provided in the form of a 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, the function is not affected, and wireless signal transmission with an external reader can also be realized through a separately packaged antenna.

[0077] Figure 10 In the example, the antenna packaging structure 102 is provided with a connecting portion 105 with external threads, and a connecting hole 46 with internal threads is formed at a corresponding position on the femoral condyle body 52, so that the antenna packaging structure 102 can be screwed onto the femoral condyle body 52 to realize stable connection of the two. It is not shown in the figure, but it can be understood that in other examples, for example, the connecting portion 105 with external threads can be replaced by a pin portion, and the connecting hole 46 with internal threads can be replaced by a pin hole for inserting the pin portion, to fix the antenna packaging structure 101 to the tibial tray body 42.

[0078] 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 as to arrange multiple antennas. For example, on the tibial tray body 42 of the above-mentioned 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 also be arranged on the same side, as shown in Figure 6 ; and for example, Figure 9 The femoral condyle body 52 of the example is connected with two packaging structures 102 as positioning columns.

[0079] When multiple antennas are configured for an implant, the appearance of each antenna packaging structure can be the same or different, and the connecting 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.

[0080] For example, the directivity of the antenna can be the same or different; when the antenna points in different directions, the external reader can make the antenna work in different directions. The frequency of the antenna can be the same or different; if a certain frequency cannot work, the antenna can be switched to another frequency to transmit signals; or, due to the different positions of the antenna packaging structure 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.

[0081] 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, 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 externally 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.

[0082] As an example but not limitation, the antenna main body in the packaging structure described in the utility model is connected to other devices such as sensors, signal processing chips, or circuit assemblies containing sensors, signal processing chips, memories, capacitors, power management chips, etc. through antenna cables. These devices can be packaged separately or together, and the separately packaged devices can be placed in the same part of the implant or 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 that has little load. 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.

[0083] The sensor can measure various physical states such as stress / strain, pressure, temperature, motion state (speed, displacement, etc.), and can also measure various chemical states such as PH value, bacterial type 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 cause implant failure; the data collection operation of the sensor can be enabled after the operation, or can be enabled during the implantation operation; intraoperative monitoring, for example, some parameters involved in the installation of the implant are monitored by the sensor, and the installation parameters are used to analyze whether the implant installation is in place, so that the medical staff can adjust during the operation to improve the success rate of implantation.

[0084] For example, the pressure 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 inner and outer sides of the implant, etc. The sensor is started during the operation to perform related monitoring, and problems such as uneven pressure distribution and poor fit can be discovered in time, and can be adjusted and solved as soon as possible 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 part of the bone interface for monitoring.

[0085] 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, for example, encode, modulate, and amplify the information to be transmitted, and then transmit it to the antenna main body through the antenna cable and transmit it externally, amplify, filter, demodulate, and decode the information received by the antenna main body through the antenna cable to recover the data sent by the external reader / writer. The memory can store various data during the operation of the sensor and / or the 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 power to ensure that the device that needs power can obtain appropriate power supply. The battery and other energy storage elements can be provided on the implant for power supply, or elements suitable for wired or wireless charging can be provided for power supply.

[0086] In summary, the packaging structure of the antenna provided by the utility model can reduce the volume and make it have part of the structural characteristics of the implant, and after being assembled to the implant body, it forms a complete implant; through the cooperation of the material and the combination mode of the packaging body, the packaging structure has good sealing performance, and the appearance form of the packaging structure can be flexibly changed according to the characteristic structure requirement of the implant, the connection structure requirement of the implant body, etc.

[0087] Although the contents of the present application have been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as limiting the present application. After reading the above contents, various modifications and substitutions of the present application will be apparent to those skilled in the art. Therefore, the protection scope of the present application should be defined by the appended claims.

Claims

1. An antenna package structure with implant feature, characterized in that, the antenna package structure is used for packaging an antenna; the antenna package structure has part of the feature of an implant; the antenna package structure, when connected with an implant body, has the complete structure of an implant; the antenna package structure comprises a first package body and a second package body connected with each other; the first package body has a first surface, and the second package body has a second surface opposite to the first surface; the first surface of the first package body is provided with a recess space for placing an antenna body; the middle part of the second surface is opposite to the opening of the recess space, and is used for shielding the opening.

2. The antenna package structure according to claim 1, characterized in that, the rest part of the second surface, except the middle part, is in close contact with the rest area of the first surface, except the recess space; one of the rest area of the first surface and the rest part of the second surface is provided with a mating groove, and the other is provided with a mating flange, which can be embedded into the mating groove and is in close contact with the mating groove; the mating groove is a trapezoidal groove, and 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.

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

4. The antenna package structure according to any one of claims 1 to 3, wherein, the first package body and the second package body are respectively made of a polymer; the polymer comprises ultra-high molecular weight polyethylene or polyether ether ketone; the first package body and the second package body are connected by heat pressing, bonding or ultrasonic welding, so as to realize airtight connection between the surfaces in close contact on the first package body and the second package body.

5. The antenna package structure according to claim 1, characterized in that, the antenna package structure is connected with an implant body through corresponding connection structures; the corresponding connection structures comprise: a pin body and a pin hole for corresponding insertion of the pin body; or a flange and a groove for corresponding insertion of the flange; or a connection part with external threads and a connection hole with internal threads.

6. An implant, characterized in that, the implant comprises an implant body and one or more antenna package structures according to any one of claims 1-5; the antenna package structure has part of the feature of the implant; the antenna package structure, when connected with the implant body, has the complete structure of the implant.

7. The implant according to claim 6, characterized in that, when the implant is arranged with multiple antennas through multiple antenna package structures, the multiple antennas satisfy any one of the following conditions: The multiple antennas have the same directivity, or at least one antenna has different directivity from the others; The multiple antennas have the same frequency, or at least one antenna has different frequency from the others; The multiple antennas have the same function, or at least one antenna has different function from the others; The multiple antennas are connected to the same device, or at least one antenna is connected to a different device from the others; The multiple antennas have the same information transmission mode, or at least one antenna has different information transmission mode from the others; the information transmission mode includes receiving wireless signal, or transmitting wireless signal, or both receiving and transmitting wireless signal; The multiple antennas work simultaneously, or at least one antenna does not work simultaneously with the others.

8. The implant of claim 6, wherein The implant is provided with other devices connected to the antenna body in the antenna package structure through antenna cable, including sensors, or signal processing chips, or capacitors, or circuit assemblies including at least one of the sensors, signal processing chips, and capacitors; The antenna package structure and the other devices are arranged in the low stress area of the implant.

9. The implant of any one of claims 6-8, wherein The implant is any kind of implant with monitoring needs, and can perform wireless signal transmission with the reader / writer through the antenna in the antenna package structure; The implant includes any one of the following: femoral stem, acetabular cup, intervertebral 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 joint, mandibular joint, wrist joint, artificial tooth root, metal bone nail / bone plate, metal intramedullary nail / needle, suture anchor, suture fixation plate, interspinous implant, temporomandibular joint, filler, femoral head necrosis reconstruction rod.

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