Head assembly fixation bracket, head assembly, and implantable medical device

Abstract

The utility model discloses head assembly fixing support, head assembly and implantable medical device belong to implantable medical device technical field, and fixing support includes the first surface and second surface of parallel arrangement, and the first surface and second surface are provided with first installation gap and second installation gap, and the first installation gap is in the top end surface and one side end surface opening of fixing support, and the second installation gap is in the other side end surface opening of fixing support, the leg, sets up in the bottom both sides of first surface and second surface, and the plane of leg department is perpendicular with the plane of first surface and second surface, the fixed block is installed on the leg department. Head assembly includes fixing support, antenna and electrode, and antenna and electrode are installed on fixing support. The utility model discloses fixing support provided with antenna and electrode can be fixed preassembly, prevent the problem of component position deviation. Again through fixing support installation to main part carries out the glue pouring treatment after, easy operation, need not repeated pouring.

Description

Technical Field

[0001] This utility model relates to the field of implantable medical device technology, and in particular to a head component fixation bracket, a head component, and an implantable medical device. Background Technology

[0002] In the field of modern medicine, implantable medical devices (ICMs), as sophisticated devices that can be implanted inside the human body to monitor physiological parameters or perform therapeutic interventions, play an irreplaceable role in the diagnosis and treatment of various diseases, including cardiovascular and neurological disorders. Implantable medical devices typically consist of two core parts: the main body and the head. The head, as the key structure that directly contacts human tissue and transmits electrical signals, contains important functional components such as electrodes and antennas. The main body houses core components such as integrated circuits and batteries, providing power support and data processing capabilities for the device's operation.

[0003] The structural stability and functional reliability of the head directly affect the overall performance of implantable medical devices. Currently, the industry generally adopts the following molding process for the head: first, the head shell is made separately by machining or molding, then the electrodes, antennas and other components are assembled one by one into the preset installation positions inside the shell, and finally the assembled head shell is connected and fixed to the main body.

[0004] In the aforementioned traditional manufacturing methods, components such as electrodes and antennas lack dedicated positioning and fixing structures within the head shell, relying solely on the space within the shell for positioning. This can easily lead to component displacement, resulting in unstable electrical signal transmission and affecting the monitoring or therapeutic effects of the device. Furthermore, the connection points between the head shell and the main body, as well as the gaps between components within the shell, can become potential channels for bodily fluid intrusion. Long-term implantation can easily cause component corrosion or functional failure, reducing the device's lifespan and safety. In addition, the lack of a unified assembly standard results in poor consistency in the installation of various components, which is detrimental to ensuring the stability of product quality. Utility Model Content

[0005] This invention aims to solve the problems of component position displacement, complex preparation methods, and poor installation consistency in existing methods for preparing implantable medical device heads, and provides a head component fixation bracket, a head component, and an implantable medical device.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] First, this utility model provides a head assembly fixing bracket, including: a first surface and a second surface arranged in parallel, with a first installation gap and a second installation gap provided between the first surface and the second surface, the first installation gap opening at the top surface and one side end surface of the fixing bracket, and the second installation gap opening at the other side end surface of the fixing bracket; legs, disposed on the bottom sides of the first surface and the second surface, the plane of the legs being perpendicular to the plane of the first surface and the second surface; and fixing blocks, installed on the legs.

[0008] Secondly, this utility model also provides a head assembly, including the fixed bracket; an antenna, inserted into the first mounting gap and arranged around the second surface and the top surface of the fixed bracket; and an electrode, inserted into the second mounting gap and fitted to the first surface.

[0009] In one embodiment, a protrusion is provided on the second surface, and the protrusion holds the antenna in place.

[0010] In one embodiment, the antenna includes a plurality of sequentially connected bent segments, wherein the plane of the second bent segment is perpendicular to the plane of the first bent segment, the plane of the third bent segment is parallel to the plane of the first bent segment, the first bent segment is inserted into the first mounting gap, the second bent segment is abutted against one end face of the fixed bracket, and the third bent segment is snapped onto the protrusion.

[0011] In one embodiment, the antenna further includes a fourth bend segment and a fifth bend segment sequentially connected to the third bend segment, the fourth bend segment being abutted against the top surface of the fixed bracket, and the fifth bend segment being abutted against the other end surface of the fixed bracket.

[0012] In one embodiment, the electrode includes a contact end and a connection end, the contact end being in contact with the first surface and the connection end being placed within the second mounting gap.

[0013] In one embodiment, a mounting hole is provided on the connecting end, and a fixing bolt is provided in the second mounting gap, with the mounting hole fitted onto the fixing bolt.

[0014] Finally, this utility model also provides an implantable medical device, including the head component described in any of the above claims, and further including: a housing with an internal circuit structure; and a battery installed at one end of the housing.

[0015] An end cap is installed at the other end of the housing, and the head assembly is installed on the end cap; the end cap includes two ears disposed opposite each other, and the legs of the fixing bracket are connected to the ears; a feedthrough assembly is installed on the end cap, and the head assembly is electrically connected to the circuit structure through the feedthrough assembly.

[0016] In one embodiment, the feedthrough assembly is integrally formed with the end cap and includes a first conductor and a second conductor, wherein the first conductor is connected to the antenna and the second conductor is connected to the electrode.

[0017] This invention uses a fixed bracket to securely pre-assemble the antenna and electrodes, preventing component misalignment. After installation onto the main body via the fixed bracket, glue is applied, simplifying the process and eliminating the need for repeated pouring.

[0018] To make the above-mentioned features and advantages of the utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the implantable medical device in this utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of the implantable medical device inside the head of this utility model.

[0021] Figure 3 This is a partial enlarged view of part A of the implantable medical device in this utility model.

[0022] Figure 4 This is a three-dimensional structural diagram of the head assembly from the first perspective of this utility model.

[0023] Figure 5 This is an exploded view of the head assembly in this utility model.

[0024] Figure 6 This is a three-dimensional structural diagram of the head assembly from a second perspective in this utility model.

[0025] Figure 7 This is an exploded view of the head assembly in this utility model from a second perspective.

[0026] Figure label:

[0027] 1-Implantable medical device; 11-Main body; 12-Head; 13-End cap;

[0028] 111-Battery; 112-Housing; 121-Head assembly; 1211-Antenna; 12111-First bending section; 12112-Second bending section; 12113-Third bending section; 12114-Fourth bending section; 12115-Fifth bending section; 1212-Electrode; 12121-Contact end; 12122-Connection end; 12123-Electrode gap; 12124-Mounting hole; 1213-Fixing bracket; 12131-First surface; 12132-Second surface; 12133-First mounting gap; 12134-Second mounting gap; 12135-Protrusion; 12136-Fixing bolt; 12137-Legs; 12138-Fixing block; Detailed Implementation

[0029] To make the objectives and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] like Figure 1 As shown, this utility model provides an implantable medical device 1, including a main body 11 and a head 12. The head 12 is connected to the end of the main body 11 via an end cap 13. The main body 11 includes a battery 111 and a housing 112. The battery 111 is mounted at one end of the housing 112, and the head 12 is mounted at the other end of the housing 112 via the end cap 13. A circuit (not shown) is installed inside the housing 112, and the electrical components inside the battery 111 and the head 12 are electrically connected to the circuit. In this embodiment, the housing 112 is formed by welding two half-housing halves together, and the housing 112 is made of titanium.

[0031] like Figure 2 The head assembly 121 is disposed within the head 12, and the head assembly 121 is connected to the housing 112 via the end cap 13. Figure 3The end cap 13 has ears 131 on both sides, each ear 131 being a roughly hollow rectangular ring structure. These ears serve to mount the head assembly 121 and enhance the fixation effect after the head 121 is cast. A feedthrough assembly, including a first wire 132 and a second wire 133, is also installed in the middle of the end cap 13. The first wire 132 connects the antenna 1211 in the head assembly 121 to the circuitry within the housing 112, and the second wire 133 connects the electrode 1212 in the head assembly 121 to the circuitry within the housing 112. In this embodiment, the feedthrough assembly is integrally formed with the end cap 13 to seal the housing 112 and prevent liquid from penetrating into it.

[0032] like Figure 4 As shown, the head assembly 121 includes, in addition to the antenna 1211 and the electrode 1212, a fixing bracket 1213. The antenna 1211 and the electrode 1212 are both inserted into the fixing bracket 1213, which is mounted on the ear portion 131. The fixing bracket 1213 includes a first surface 12131 and a second surface 12132, with the first surface 12131 and the second surface 12132 arranged parallel to each other. Figure 4 and Figure 5 These are view diagrams of the first surface 12131, respectively. Figure 6 and Figure 7 These are perspective views of the second surface 12132. The electrode 1212 is mounted on the first surface 12131, and the antenna 1211 is arranged around the second surface 12132 and the top surface of the fixing bracket 1213. A first mounting gap 12133 and a second mounting gap 12134 are provided between the first surface 12131 and the second surface 12132. The first mounting gap 12133 is open at the top surface and one side surface of the fixing bracket 1213, and the antenna 1211 is inserted into the first mounting gap 12133 from top to bottom; in addition, a protrusion 12135 is also provided on the second surface 12132 of the fixing bracket 1213 (see...). Figure 7 When the antenna 1211 is arranged around the second surface 12132, the protrusion 12135 fixes the antenna 1211, preventing the antenna 1211 from moving up and down. Figure 7As shown, the second mounting gap 12134 opens at the other end face of the fixing bracket 1213, and the electrode 1212 is inserted into the second mounting gap 12134 from the side end. A fixing bolt 12136 is also provided in the second mounting gap 12134. When the electrode 1212 is inserted into the second mounting gap 12134, the electrode 1212 is fixedly connected to the fixing bolt 12136 to prevent the electrode 1212 from shifting during use.

[0033] The lower end of the fixed bracket 1213 is provided with two legs 12137. The plane of the legs 12137 is perpendicular to the first surface 12131 and the second surface 12132. The legs 12137 are provided with fixing blocks 12138. When the fixed bracket 1213 is installed to the end cover 13, the fixing blocks 12138 are placed in the hollow annular structure of the ear 131.

[0034] like Figure 5 As shown, the electrode 1212 has a "U" snap-fit ​​structure, including a contact end 12121 and a connecting end 12122, and an electrode gap 12123 formed between the contact end 12121 and the connecting end 12122. When the electrode 1212 is installed, the contact end 12121 is placed on the first surface 12131, and the connecting end 12122 is placed in the second mounting gap 12134 of the fixing bracket 1213 and connected to the second wire 133. Figure 7 As shown, the connecting end 12122 has a mounting hole 12124. When the connecting end 12122 is placed within the second mounting gap 12134, the mounting hole 12124 is fitted onto the fixing bolt 12136 to fix the electrode 1212 onto the fixing bracket 1213. Figure 1 After the electrode 1212 is installed and the head 12 is injection molded, the outer surface of the contact end 12121 is exposed to the outer surface of the head 12, enabling it to contact human tissue, thereby achieving accurate acquisition of physiological signals and effective transmission of treatment signals.

[0035] like Figure 5As shown, the antenna 1211 has a multi-segment bent structure, including: a first bent segment 12111 located on the Z-axis plane parallel to the first surface 12131, and the first bent segment 12111 has a substantially "7" - shaped structure; a second bent segment 12112 perpendicularly connected to the first bent segment 12111, and the second bent segment 12112 is located on the Y-axis plane; a third bent segment 12113 parallel to the first bent segment 12111 and connected to the other end of the second bent segment 12112, and the third bent segment 12113 has a substantially "匚" - shaped structure, and the lower end of the third bent segment 12113 is connected to the second bent segment 12112; a fourth bent segment 12114 connected to the lower end of the third bent segment 12113, and the fourth bent segment 12114 is perpendicularly connected to the third bent segment 12113 on the X-axis plane and has a substantially "L" - shaped structure; and a fifth bent segment 12115 perpendicularly connected to the end of the fourth bent segment 12114, and the plane where the fifth bent segment 12115 is located is parallel to the plane where the second bent segment 12112 is located, and both are in the Z-axis plane. Please combine with Figure 6 , when the antenna 1211 is installed on the fixed bracket 1213, the first bent segment 12111 is inserted into the first installation gap 12133 and connected to the first wire 132, the second bent segment 12112 is in contact with one side end face of the fixed bracket 12213, the third bent segment 12113 is in contact with the second surface 12132, and the convex block 12135 is clamped between the upper and lower ends of the third bent segment 12113, the fourth bent segment 12114 is placed at the top of the fixed bracket 12!3, and the fifth bent segment 12115 is in contact with the other side end face of the fixed bracket 1213.

[0036] Through the structural design and cooperation of the fixed bracket 1213, the antenna 1211, and the electrode 1212, the antenna 1211 can be stably installed on the fixed bracket 1213.

[0037] In the fabrication of the implantable medical device 1 provided by this utility model, the main body 11 is first fabricated, the circuitry is placed inside the housing 112, the battery 111 is installed at one end of the housing 112, and the end cap 13 is installed at the other end. Then, the head assembly 121 is assembled, the antenna 1211 is installed into the first mounting gap 12133, and the electrode 1212 is installed into the second mounting gap 12134. Next, the assembled head assembly 121 is installed onto the end cap 13, the fixing block 12138 is snapped onto the ear 131, and the first wire 132 is connected to the antenna 1211, and the second wire 133 is connected to the electrode 1212. Finally, the head 12 is potted with adhesive. A silicone sleeve can be used to connect the head assembly 121 and the housing 112 to form a sealed cavity. Adhesive is potted into the sealed cavity using an adhesive potting device, and the silicone sleeve is removed after the adhesive has cured.

[0038] In summary, this utility model provides a fixed pre-assembly for the antenna 1211 and the electrode 1212 via the fixed bracket 1213, preventing component misalignment. After installation onto the main body 11 via the fixed bracket 1213, glue is applied, simplifying the process and eliminating the need for repeated pouring.

[0039] Although the present invention has been described and illustrated in detail with reference to preferred embodiments, the present invention is not limited to the disclosed examples, and those skilled in the art can derive other variations therefrom without departing from the protection scope of the present invention.

Claims

1. A head assembly fixing bracket, characterized in that, include: A first surface and a second surface are arranged in parallel, with a first installation gap and a second installation gap between the first surface and the second surface. The first installation gap opens at the top surface and one side surface of the fixed bracket, and the second installation gap opens at the other side surface of the fixed bracket. The legs are located on the bottom sides of the first surface and the second surface, and the plane containing the legs is perpendicular to the plane containing the first surface and the second surface. A fixing block is installed on the leg.

2. A head assembly, characterized in that, Including the fixing bracket as described in claim 1, it further includes: The antenna is inserted into the first mounting gap and is arranged around the second surface and the top surface of the fixed bracket; The electrode is inserted into the second mounting gap and fitted to the first surface.

3. The head assembly according to claim 2, characterized in that, The second surface is provided with a protrusion, which holds the antenna in place.

4. The head assembly according to claim 3, characterized in that, The antenna includes multiple sequentially connected bent segments, wherein the plane of the second bent segment is perpendicular to the plane of the first bent segment, the plane of the third bent segment is parallel to the plane of the first bent segment, the first bent segment is inserted into the first mounting gap, the second bent segment is abutted against one end face of the fixed bracket, and the third bent segment is snapped onto the protrusion.

5. The head assembly according to claim 4, characterized in that, The antenna further includes a fourth bend segment and a fifth bend segment sequentially connected to the third bend segment. The fourth bend segment is in contact with the top surface of the fixed bracket, and the fifth bend segment is in contact with the other end surface of the fixed bracket.

6. The head assembly according to claim 2, characterized in that, The electrode includes a contact end and a connection end. The contact end is in contact with the first surface, and the connection end is placed within the second mounting gap.

7. The head assembly according to claim 6, characterized in that, An installation hole is provided on the connecting end, and a fixing bolt is provided in the second installation gap, with the installation hole fitted onto the fixing bolt.

8. An implantable medical device, characterized in that, Including the head assembly as described in any one of claims 2 to 7, further comprising: The casing contains an internal circuit structure; The battery is installed at one end of the housing; An end cap is mounted on the other end of the housing, and the head assembly is mounted on the end cap; The end cap includes two ears arranged opposite each other, and the legs of the fixing bracket are connected to the ears; a feedthrough assembly is installed on the end cap, and the head assembly is electrically connected to the circuit structure through the feedthrough assembly.

9. The implantable medical device according to claim 8, characterized in that, The feedthrough assembly is integrally formed with the end cap and includes a first wire and a second wire. The first wire is connected to the antenna, and the second wire is connected to the electrode.

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