Assembly for a header, header, and implant comprising the header, and method for mounting a header

Abstract

An assembly for an electrode connection device of an implant has a continuous receiving unit for a plug, a first connecting element which is arranged in a front region of the receiving unit and has at least two flat lateral surfaces, and a second connecting element, which is arranged in a rear region of the receiving unit. The second connecting element includes at least two flat lateral surfaces. Furthermore, an electrode connection device, an implant, and a method for mounting an electrode connection device all utilize the assembly.

Claims

1. An assembly for an electrode connection device of an implant, the assembly comprising: a continuous receiving unit for receiving a plug in a first direction and having a first section with a first diameter, a second section with a second diameter and a third section with a third diameter, said first diameter being larger than said second diameter and said second diameter being larger than said third diameter; a first connector disposed in a front region of said continuous receiving unit between said first section and said second section, said first connector having at least two flat lateral surfaces; a second connector disposed in a rear region of said continuous receiving unit between said second section and said third section, said second connector having at least two flat lateral surfaces; and a plastic material directly surrounding and coming into contact with said first connector and said second connector and forming parts of said first section, said second section and said third section, said plastic material having a recess formed therein directly adjacent one of said at least two flat lateral surfaces of said first connector, and said recess running in a second direction being perpendicular to said first direction.

2. The assembly according to claim 1, wherein: said first connector having a connecting region being free of said plastic material; and/or said second connector having a connecting region being free of said plastic material.

3. The assembly according to claim 2, wherein: said plastic material having a first guide formed therein for a first conductor for connection to said connecting region of said first connector; and/or said plastic material having a second guide formed therein for a second conductor for connection to said connecting region of said second connector.

4. The assembly according to claim 3, wherein: said first guide is formed so as to adjoin said connecting region of said first connector; and/or said second guide is formed so as to adjoin said connecting region of said second connector.

5. The assembly according to claim 1, wherein said first connector and said second connector are disposed offset from one another.

6. The assembly according to claim 1, further comprising an antenna having a U-shaped form in an intermediate region, and is formed between said first connector and said second connector.

7. The assembly according to claim 1, further comprising a positioning unit formed at a rear end of said continuous receiving unit.

8. The assembly according to claim 1, further comprising: a further receiving unit for receiving a further plug; a third connector disposed in a front region of said further receiving unit; and a fourth connector disposed in a rear region of said further receiving unit.

9. An electrode connection device for an implant, comprising: an assembly, containing: a continuous receiving unit for receiving a plug in a first direction and having a first section with a first diameter, a second section with a second diameter and a third section with a third diameter, said first diameter being larger than said second diameter and said second diameter being larger than said third diameter; a first connector disposed in a front region of said continuous receiving unit between said first section and said second section, said first connector having at least two flat lateral surfaces; a second connector disposed in a rear region of said continuous receiving unit between said second section and said third section, said second connector having at least two flat lateral surfaces; and a plastic material directly surrounding and coming into contact with said first connector and said second connector and forming parts of said first section, said second section and said third section, said plastic material having a recess formed therein directly adjacent one of said at least two flat lateral surfaces of said first connector, and said recess running in a second direction being perpendicular to said first direction.

10. The electrode connection device for an implant according to claim 9, wherein said assembly is overmolded with a synthetic resin.

11. An implant, comprising: an electrode connection device having an assembly, said assembly containing: a continuous receiving unit for receiving a plug in a first direction and having a first section with a first diameter, a second section with a second diameter and a third section with a third diameter, said first diameter being larger than said second diameter and said second diameter being larger than said third diameter; a first connector disposed in a front region of said continuous receiving unit between said first section and said second section, said first connector having at least two flat lateral surfaces; a second connector disposed in a rear region of said continuous receiving unit between said second section and said third section, said second connector having at least two flat lateral surfaces: a plastic material directly surrounding and coming into contact with said first connector and said second connector and forming parts of said first section, said second section and said third section, said plastic material having a recess formed therein directly adjacent one of said at least two flat lateral surfaces of said first connector, and said recess running in a second direction being perpendicular to said first direction; and a synthetic resin surrounding said assembly and said plastic material.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

(1) FIG. 1 is a diagrammatic, perspective view of an embodiment of an assembly for an electrode connection device;

(2) FIG. 2A is a front, perspective view of the assembly according to FIG. 1;

(3) FIG. 2B is a rear, perspective view of the assembly according to FIG. 1;

(4) FIG. 3A is a front, perspective view of the assembly according to FIG. 1 with casting aids;

(5) FIG. 3B is a rear, perspective view of the assembly according to FIG. 1 with casting aids;

(6) FIG. 4 is a perspective view showing the assembly according to FIGS. 1 to 3 including an antenna and conductors;

(7) FIG. 5 is a perspective view showing the assembly according to FIGS. 1 to 4 arranged on a housing;

(8) FIG. 6 is a perspective view showing the assembly according to FIGS. 1 to 5 when completely casted (with casting aids); and

(9) FIG. 7 is a perspective view showing the assembly according to FIGS. 1 to 5 completely casted (without casting aids).

DETAILED DESCRIPTION OF THE INVENTION

(10) Hereafter, the same reference numerals are used for identical components.

(11) FIGS. 1 to 7 show the individual steps for mounting an electrode connection device (header) on an implant. The steps are described in more detail hereafter.

(12) Referring now to the figures of the drawings in detail and first, particularly to FIG. 1 thereof, there is shown an assembly 1 (also referred to as header core) comprising a first receiving unit 2 for an electrode plug and a second receiving unit 13 for a further electrode plug. The first receiving unit 2 has a front opening 6 through which the electrode plug can be inserted. The first receiving unit 2 comprises a first section 3, a second section 4 and a third section 5. The diameter of the first section 3 is larger than the diameter of the second section 4. The diameter of the second section 4, in turn, is larger than the diameter of the third section 5. In other words, the first receiving unit 2 becomes incrementally narrower from the front opening 6 to the end.

(13) A first connecting element 7 is formed between the first section 3 and the second section 4 (that is, in a front region of the first receiving unit 2). A second connecting element 8 is formed between the second section 4 and the third section 5 (in a rear region of the first receiving unit 2). Both the first connecting element 7 and the second connecting element 8 comprise at least two flat lateral surfaces. This allows easy gripping of the assembly 1 during assembly and enables automation of the assembly steps. In the shown embodiment, the first connecting element 7 and the second connecting element 8 have a substantially cuboid design. The second connecting element 8 comprises a chamfered edge 17, which serves material savings purposes and compliance to the flow direction of the epoxy resin. A recess 12a is formed in the plastic coating on a rear side of the first connecting element 7. A rear opening 12b is formed on a rear side of the second connecting element 8.

(14) The assembly is partially surrounded by a plastic material 11. In the shown embodiment, the assembly is partially overmolded with polysulfone. Recesses are formed in the plastic material 11 for a first contact surface 9 and a second contact surface 10. The first and second contact surfaces are designed as circular areas. Adjoining the first and second contact surfaces 9, 10, a respective guide 16 is formed. The guide 16 is used to receive a connecting element (such as a wiring strip). The guides at the contact surfaces prevent connecting elements of different contact surfaces from making contact with one another.

(15) The second receiving unit 13 is designed analogously to the first receiving unit 2. For the sake of clarity, the components of the second receiving unit (one opening, the three incrementally narrowing sections and the two connecting elements) are not denoted by reference numerals. The second receiving unit 13 likewise comprises two contact surfaces (third contact surface 14 and fourth contact surface 15) for connections. Adjoining the contact surfaces, guides are formed.

(16) A positioning unit 18b, which is designed as a pin having a tapered end, is formed at one end of the second receiving unit. When the assembly 1 is mounted on a housing 29 (see FIG. 4), the pointed end of the positioning unit 18b can be inserted in a receptacle of the housing so as to facilitate the arrangement of the assembly on the housing with precise fit. However, the assembly can also be implemented without the positioning unit 18b.

(17) On a bottom side of the assembly, positioning pins 18a are formed (see FIGS. 2A-2B). The positioning pins can be arranged in associated receptacles when the assembly is arranged on the housing of the implant. The shown embodiment shows two positioning pins; however, other quantities of positioning pins are likewise possible.

(18) The first receiving unit 2 and the second receiving unit 13 each comprise a spring sleeve and a receiving portion for a plug. The first receiving unit 2 and the second receiving unit 13 can be designed as IS-1 connectors.

(19) A spring element 20 is arranged in the first receiving unit 2 and attached there (FIG. 3A). The recess 12a in the plastic material is used to weld the spring element 20 that is arranged inside the first receiving unit 2 into the first connecting element 7 by resistance welding. A further spring element is arranged and attached analogously in the second receiving unit 13 (not shown). The openings of the assembly 1 are subsequently closed and sealed with potting aids 21, 22, 23 (FIG. 3B).

(20) FIG. 4 shows another assembly step. A wire band 24 is attached to the third contact surface 14 (such as welded). At the rear end, the wire band 24 includes a wire band connection 25, which can be connected to a pin contact of a feedthrough 30 (see FIG. 5) and placed onto the pin contact, for example. Further wire bands are connected to the other contact surfaces 9, 10, 15.

(21) An antenna 26 is attached to the assembly 1. The antenna 26 partially encloses the first section 3 of the first receiving unit 2 and is clipped thereto. In a region between the first connecting element 7 and the second connecting element 8, the antenna 26 comprises a U-shaped section 27. In this way, a gripping recess is formed, which can be used, for example, together with an automated gripper to hold and transport the assembly. At a rear end of the antenna, an antenna connection 28 is formed for connection to the feedthrough 30.

(22) The assembly including the wire bands and the antenna is subsequently arranged in a non-illustrated casting mold (such as a silicone mold). The wire band connections and the antenna connection 28 are placed onto assigned pins of the feedthrough 30 and connected to the pins (such as welded). The casting mold is closed and filled with a synthetic resin 31 (such as epoxy resin). In this way, the electrode connection device is molded (see FIG. 6).

(23) The casting aids 21, 22, 23 are removed and possibly excess resin on the outer surfaces is removed, such as by means of grinding and/or polishing. The implant comprising the electrode connection device is thus fully assembled (FIG. 7).

(24) The assembly/electrode connection device can have the following advantages:

(25) a) no penetration of resin and/or other particles into the first (and optionally second) receiving unit, so that no rework is required;

(26) b) insulating distances of the wire bands are predefined by the design of the assembly, so that the risk of an electrical short circuit is reduced or even precluded;

(27) c) the design enables automated production of the electrode connection device; and

(28) d) compared to the previously known production, manufacturing steps are eliminated, resulting in a shorter manufacturing time.

(29) The features disclosed in the description, the claims and the figures can be relevant for the implementation of embodiments either alone or in any random combination with one another.

(30) When reading the claim language, the following definitions apply. When the claim language recites A and/or B it means A alone, B alone or A and B. When the claim language recites at least one of A and B it means A alone, B alone or A and B. When the claim language recites at least one of A or B it means A alone, B alone or A and B.

(31) The following is a summary list of reference numerals and the corresponding structure used in the above description of the invention: 1 assembly 2 first receiving unit 3 first section of the first receiving unit 4 second section of the first receiving unit 5 third section of the first receiving unit 6 front opening 7 first connecting element 8 second connecting element 9 first contact surface 10 second contact surface 11 plastic material 12a recess 12b rear opening 13 second receiving unit 14 third contact surface 15 fourth contact surface 16 guide 17 chamfered edge 18a positioning pins 18b positioning unit 20 spring element 21 first casting aid 22 second casting aid 23 third casting aid 24 wire band 25 wire band connection 26 antenna 27 U-shaped section of the antenna 28 antenna connection 29 housing 30 feedthrough 31 resin