Glue sealing mold for artificial cochlea implant

Abstract

The utility model relates to a glue sealing mould for an artificial cochlea implant, which is used for packaging an artificial cochlea comprising a stimulator, a receiving coil and a stimulating electrode and comprises a fixed mould part, a movable mould part and a mould closing rod group, the fixed mold part comprises a fixed mold fixing plate, a fixed mold plate, a fixed mold insert, a movable insert and an electrode support, the movable mold part comprises a movable mold fixing plate, a movable mold plate, a movable mold core and an ejector rod, and the mold closing rod group comprises a cross rod, a push rod and a supporting rod. The movable insert can drive the receiving coil to move downwards by pressing the ejector rod downwards, so that the silica gel completely packages the surface of the receiving coil to obtain an implant. Compared with the prior art, the silica gel packaging process can be simplified, and the qualified rate of products can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a sealing glue mold for a cochlear implant body. Background Technique

[0002] A cochlear implant body is a medical device that can receive pulse signals and convert the pulse signals into electrical signals. The implant body includes a stimulator, a receiving coil, and silica gel. After the receiving coil receives the pulse signal, the processor converts the pulse signal into an electrical signal. After the stimulating electrode is electrified, a stimulating current is generated to stimulate the auditory nerve to generate hearing. To achieve the best stimulation effect, it is necessary to ensure that the receiving coil and the transmitting coil are relatively parallel, and the distance between the two coils is between 4 and 6 mm. Since the receiving coil needs to be completely encapsulated by silica gel, this will cause the receiving coil to be in a suspended state in the encapsulation mold and the position of the receiving coil cannot be guaranteed. Currently, most encapsulation molds first make the lower half of the silica gel in the mold, then put the receiving coil and the stimulator into the already made silica gel, and finally pour silica gel to encapsulate the upper half. Although this can complete the encapsulation, the two encapsulations will cause color stratification in the encapsulated implant body and there will be bubbles. Therefore, it is necessary to design a new type of sealing glue mold for a cochlear implant body to simplify the process of silica gel encapsulation and improve product quality. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the defects existing in the above-mentioned prior art and provide a sealing glue mold for a cochlear implant body to simplify the process of silica gel encapsulation and improve product quality.

[0004] The purpose of the utility model can be realized by the following technical solutions:

[0005] The utility model provides a sealing glue mold for a cochlear implant body, which is used for encapsulating a cochlear implant including a stimulator, a receiving coil, and a stimulating electrode. The sealing glue mold is characterized by comprising a fixed mold part, a movable mold part, and a mold closing rod group;

[0006] The fixed mold part includes a fixed mold fixing plate, a fixed mold plate, a fixed mold insert, a movable insert, and an electrode support. The fixed mold plate is fixed on the top of the fixed mold fixing plate, and a fixed mold core for placing the stimulator and the receiving coil is provided thereon. One end of the fixed mold insert is fixed on the fixed mold fixing plate, the other end passes through the fixed mold plate, and a protrusion adapted to the bottom groove of the stimulator is provided at the top. One end of the movable insert is connected to a telescopic spring fixed on the fixed mold fixing plate, and the other end passes through the fixed mold plate for supporting and positioning the receiving coil. One end of the electrode support is fixed on the fixed mold fixing plate, and a groove adapted to the stimulating electrode is provided at the other end;

[0007] The moving mold part includes a moving mold fixing plate, a moving template, a moving mold core and ejector rods. One end of the moving template is fixed to the bottom of the moving mold fixing plate, and the other end abuts against the fixed template. One end of the ejector rod is fixed to the moving mold fixing plate, and the other end passes through the moving template and the fixed template and abuts against the movable insert. The moving mold core is located in the middle of the moving template and is adapted to the fixed mold core.

[0008] The mold closing rod group includes a cross bar, a push rod and a support rod. One end of the support rod is fixed to the fixed mold fixing plate, and the other end is fixedly connected to the cross bar through a pin. One end of the push rod is fixed to the moving mold fixing plate, and the other end passes through a through hole on the cross bar. An external thread meshing with the internal thread on the hole wall of the through hole on the cross bar is provided on the side surface of the push rod.

[0009] Further, the fixed template is fixed to the top of the fixed mold fixing plate by bolts.

[0010] Further, one end of the push rod is fixed to the moving mold fixing plate through a thrust bearing and a bearing fixing flange.

[0011] Further, an external hexagon is provided at the top of one end of the push rod passing through the cross bar.

[0012] Further, guide posts are provided on the fixed template, and guide post holes matching the guide posts are provided on the moving template. The fixed template and the moving template are aligned and fixed through the cooperation of the guide posts and the guide post holes.

[0013] Further, a return spring is provided at one end of the guide post close to the fixed template.

[0014]

[0015] Further, a protrusion is provided at the edge of the fixed template, and a groove matching the protrusion at the edge of the fixed template is provided at the edge of the moving template. The fixed template and the moving template are aligned and fixed through the cooperation of the protrusion at the edge of the fixed template and the groove at the edge of the moving template.

[0016] Further, a pouring gate is provided at one end of the fixed mold core close to the receiving coil.

[0017] Further, the movable insert is movably connected to the fixed mold fixing plate through an insert fixing flange.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] ​The present utility model provides a sealing glue mold for a cochlear implant, which is used for encapsulating a cochlear implant including a stimulator, a receiving coil and a stimulating electrode, and comprises a fixed mold part, a movable mold part and a mold closing rod group; the fixed mold part includes a fixed mold fixing plate, a fixed mold plate, a fixed mold insert, a movable insert and an electrode support. One end of the fixed mold insert is fixed on the fixed mold fixing plate, the other end passes through the fixed mold plate and a protrusion adapted to the bottom groove of the stimulator is provided at the top; one end of the movable insert is connected to a telescopic spring fixed on the fixed mold fixing plate, and the other end passes through the fixed mold plate for supporting and positioning the receiving coil. The placement positions of the receiving coil and the stimulator can be quickly and accurately determined through the movable insert and the fixed mold insert; the movable mold part includes a movable mold fixing plate, a movable mold plate, a movable mold core and a ejector rod. One end of the movable mold plate is fixed at the bottom of the movable mold fixing plate, and the other end abuts against the fixed mold plate; one end of the ejector rod is fixed on the movable mold fixing plate, and the other end passes through the movable mold plate and the fixed mold plate and abuts against the movable insert; the mold closing rod group includes a cross bar, a push rod and a support rod. One end of the support rod is fixed on the fixed mold fixing plate, and the other end is connected and fixed to the cross bar through a pin; one end of the push rod is fixed on the movable mold fixing plate, and the other end passes through a through hole on the cross bar. External threads meshing with the internal threads on the hole wall of the through hole on the cross bar are provided on the side surface of the push rod; when using the above-mentioned mold, the movable insert can be driven by pressing down the ejector rod to drive the receiving coil to move downward, so that the surface of the receiving coil can be completely encapsulated with silicone to obtain an implant, and it is not necessary to perform two encapsulations, which can not only simplify the process of silicone encapsulation, but also avoid the generation of air bubbles or delamination in the implant and improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view of the present utility model;

[0021] Figure 2 is the side view of the present utility model;

[0022] Figure 3 is the structural schematic diagram of the fixed mold part and part of the mold closing rod group,

[0023] wherein, (3a) is the front view of the fixed mold part and part of the mold closing rod group, (3b) is the enlarged view of the local structure near the receiving coil, and (3c) is the enlarged view of the local structure near the stimulator;

[0024] Figure 4 is the pouring schematic diagram;

[0025] Figure 5 is the structural schematic diagram of the movable mold part and part of the mold closing rod group,

[0026] wherein, (5a) is the front view of the movable mold part and part of the mold closing rod group, (5b) is the top view of the movable mold part and part of the mold closing rod group, and (5c) is the front view of the movable mold part and part of the mold closing rod group;

[0027] Description of the reference numerals: 1. Pin; 2. Push rod; 3. Thrust bearing; 4. Bearing fixing flange; 5. Moving die fixing plate; 6. Moving die plate; 7. Stimulating electrode; 8. Electrode holder; 9. Fixed die plate; 10. Stimulator; 11. Fixed die insert; 12. Insert fixing flange; 13. Magnet substitute; 14. Telescopic spring; 15. Fixed die fixing plate; 16. Movable insert; 17. Receiving coil; 18. Ejector rod; 19. Moving die core; 20. Cross bar; 21. Support rod; 22. Guide pillar. Detailed implementation manners

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is normally placed. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0031] Embodiment:

[0032] This embodiment provides a sealing glue mold for a cochlear implant, which is used for encapsulating a cochlear implant including a stimulator 10, a receiving coil 17 and a stimulating electrode 7, and includes a fixed die part, a moving die part and a mold clamping rod group.

[0033] As Figure 1As shown, the fixed mold part includes a fixed mold fixing plate 15, a fixed mold plate 9, a fixed mold insert 11, a movable insert 16, and an electrode holder 8. The fixed mold plate 9 is fixed to the top of the fixed mold fixing plate 15 by bolts, and a fixed mold core for placing the stimulator 10 and the receiving coil 17 is provided thereon. As Figure 4 shown, a pouring gate is provided at one end of the fixed mold core close to the receiving coil 17. As Figure 3 shown in (3c) of Figure 3 , one end of the fixed mold insert 11 is fixed to the fixed mold fixing plate 15, the other end passes through the fixed mold plate 9, and a protrusion adapted to the bottom groove of the stimulator 10 is provided at the top. As

[0034] shown in (3b) of Figure 5 , one end of the movable insert 16 is connected to a telescopic spring 14 fixed to the fixed mold fixing plate 15, and is movably connected to the fixed mold fixing plate 15 through an insert fixing flange 12. The other end passes through the fixed mold plate 9 and is used to support and position the receiving coil 17. One end of the electrode holder 8 is fixed to the fixed mold fixing plate 15, and a groove adapted to the stimulating electrode 7 is provided at the other end.

[0035] The mold closing rod group includes a cross bar 20, a push rod 2, and a support rod 21. As Figure 2 shown, one end of the support rod 21 is fixed to the fixed mold fixing plate 15, and the other end is fixedly connected to the cross bar 20 through a pin 1. One end of the push rod 2 is fixed to the movable mold fixing plate 5 through a thrust bearing 3 and a bearing fixing flange 4, and the other end passes through a through hole on the cross bar 20, and an external hexagon is provided at the top. As Figure 5 shown in (5b) of Figure 5 . As shown in (5c) of

[0036] In a preferred embodiment, as Figure 3 shown in (3a) of

[0037] In another embodiment, a protrusion is provided at the edge of the fixed template, and a groove adapted to the protrusion at the edge of the fixed template 9 is provided at the edge of the movable template 6. The fixed template 9 and the movable template 6 are aligned and fixed through the cooperation of the protrusion at the edge of the fixed template 9 and the groove at the edge of the movable template 6.

[0038] When using the above-mentioned cochlear implant encapsulation mold, first, place the fixed mold core into the fixed template 9, fix the fixed template 9 to the fixed mold fixing plate 15 with bolts, and fix the support rod 21 to the fixed mold fixing plate 15 with bolts to complete the preliminary assembly. Then, place the receiving coil 17 and the stimulator 10 into the fixed mold core, and the two are quickly and accurately positioned through the movable insert 16 and the fixed mold insert respectively. At the same time, place the stimulating electrode 7 into the groove on the electrode holder 8. Secondly, weigh and mix the silicone and place it in a vacuum drying oven to remove the air bubbles in the silicone. After the air bubbles in the silicone are removed completely, pour it into the encapsulation mold from the pouring port. Assemble the movable mold part, fix the push rod 2 to the movable mold part and then pass it through the cross bar 20. Fix the cross bar 20 to the support column 21 with a pin 1. Put the sleeve of an electric wrench into the external hexagon of the push rod and rotate the push rod. The external thread of the push rod meshes with the internal thread of the cross bar and rotates, driving the movable mold part and the fixed mold part to close the mold up and down. During the mold closing process, the ejector rod 18 on the movable mold first contacts the movable insert 16, and the movable insert 16 drives the receiving coil 17 to move downward under the action of the ejector rod 18, so that the silicone completely encapsulates the surface of the receiving coil 17. After the mold closing is completed, place it in a vacuum drying oven and bake for 4 hours. After the drying is completed, open the mold with an electric wrench and take out the implant to complete the encapsulation.

[0039] On the one hand, the utility model can accurately position the receiving coil 17 and the stimulator 10, improve the manufacturing efficiency. On the other hand, it can close the mold at a uniform speed, does not require two encapsulations, simplifies the silicone encapsulation process, can avoid air bubbles or delamination in the implant, improves the product qualification rate, and can be quickly demolded.

[0040] The above is only the specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. An artificial cochlear implant encapsulation mold for encapsulating an artificial cochlear implant including a stimulator (10), a receiving coil (17), and a stimulating electrode (7), characterized in that, It includes a fixed mold part, a movable mold part and a mold closing rod group; The fixed mold part includes a fixed mold fixing plate (15), a fixed mold plate (9), a fixed mold insert (11), a movable insert (16) and an electrode holder (8). The fixed mold plate (9) is fixed on the top of the fixed mold fixing plate (15), and a fixed mold core for placing the stimulator (10) and the receiving coil (17) is provided thereon. One end of the fixed mold insert (11) is fixed on the fixed mold fixing plate (15), the other end passes through the fixed mold plate (9), and a protrusion adapted to the bottom groove of the stimulator (10) is provided at the top. One end of the movable insert (16) is connected to a telescopic spring (14) fixed on the fixed mold fixing plate (15), and the other end passes through the fixed mold plate (9) for supporting and positioning the receiving coil (17). One end of the electrode holder (8) is fixed on the fixed mold fixing plate (15), and a groove adapted to the stimulation electrode (7) is provided at the other end; The movable mold part includes a movable mold fixing plate (5), a movable mold plate (6), a movable mold core (19) and a ejector rod (18). One end of the movable mold plate (6) is fixed at the bottom of the movable mold fixing plate (5), and the other end abuts against the fixed mold plate (9). One end of the ejector rod (18) is fixed on the movable mold fixing plate (5), and the other end passes through the movable mold plate (6) and the fixed mold plate (9) and abuts against the movable insert (16). The movable mold core (19) is located in the middle of the movable mold plate (6) and is adapted to the fixed mold core; The mold closing rod group includes a cross bar (20), a push rod (2) and a support rod (21). One end of the support rod (21) is fixed on the fixed mold fixing plate (15), and the other end is fixedly connected to the cross bar (20) through a pin (1). One end of the push rod (2) is fixed on the movable mold fixing plate (5), and the other end passes through a through hole on the cross bar (20). External threads meshing with the inner threads of the hole wall of the through hole on the cross bar (20) are provided on the side surface of the push rod (2).

2. The cochlear implant encapsulation mold according to claim 1, wherein, The fixed mold plate (9) is fixed on the top of the fixed mold fixing plate (15) by bolts.

3. The silicone encapsulation mold for a cochlear implant according to claim 1, wherein One end of the push rod (2) is fixed on the movable mold fixing plate (5) through a thrust bearing (3) and a bearing fixing flange (4).

4. An artificial cochlear implant encapsulation mold according to claim 1, characterized in that An external hexagon is provided at the top of one end of the push rod (2) passing through the cross bar (20).

5. An artificial cochlear implant encapsulation mold according to claim 1, characterized in that, Guide posts (22) are provided on the fixed mold plate (9), and guide post holes matching the guide posts (22) are provided on the movable mold plate (6). The fixed mold plate (9) and the movable mold plate (6) are aligned and fixed through the cooperation of the guide posts (22) and the guide post holes.

6. The silicone rubber injection mold for cochlear implant according to claim 5, wherein A return spring is provided at one end of the guide post (22) close to the fixed mold plate (9).

7. An encapsulation mold for a cochlear implant according to claim 5, characterized in that, The guide posts (22) are arranged at the four corners of the fixed mold plate (9).

8. An encapsulation mold for a cochlear implant according to claim 1, characterized in that, The edge of the fixed template (9) is provided with a protrusion, and the edge of the movable template (6) is provided with a groove adapted to the protrusion on the edge of the fixed template (9). The fixed template (9) and the movable template (6) are aligned and fixed through the cooperation of the protrusion on the edge of the fixed template (9) and the groove on the edge of the movable template (6).

9. The silicone encapsulation mold for a cochlear implant according to claim 1, wherein One end of the fixed mold core close to the receiving coil (17) is provided with a pouring gate.

10. The silicone encapsulation mold for a cochlear implant according to claim 1, wherein The movable insert (16) is movably connected to the fixed mold fixing plate (15) through an insert fixing flange (12).

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