Pulse generator of implantable electrical nerve stimulation system

Abstract

The utility model relates to the technical field of implantable electrical nerve stimulation systems, in particular to a pulse generator of an implantable electrical nerve stimulation system, which comprises a fixing seat, a first fixing hole is arranged at the top end of the fixing seat, and a screw is spirally connected in the first fixing hole. Through the arrangement of the fixing seat, the first fixing hole, the screw, the fixing shell, the first limiting groove, the first limiting groove, the second limiting block, the second fixing hole, the pulse generator, the clamp, the third fixing hole, the second limiting groove and other components, the fixing seat can be installed on the human body through the screw and the first fixing hole; then the pulse generator is clamped into the first limiting groove, the pulse generator continues to be pressed, the first limiting block and the second limiting block are both clamped into the pulse generator under the action of the second limiting groove, at the moment, the second fixing hole and the third fixing hole completely coincide, and then the clamp is placed into the second fixing hole and the third fixing hole.

Description

Technical Field

[0001] The utility model relates to the technical field of implantable neural electrical stimulation systems, in particular to a pulse generator of an implantable neural electrical stimulation system. Background Art

[0002] With the development of interventional medical surgery and neuroelectronic science and technology, implantable neurostimulation systems have been widely used in clinical practice. The existing deep brain nerve electrical stimulation system mainly includes a pulse generator for providing pulse signals (also called implantable pulse generator, IPG), stimulation electrodes (Lead), in-body extended conductive wires (Extension), in-body programming equipment (Programmer & Remote) and related surgical tools (Surgical tool). In the electrical stimulation system, the pulse generator is implanted in the human body as the signal source of the entire system. The circuit parts such as the signal generating module of the pulse generator are encapsulated in a shell. The shell transmits the electrical signal to the connecting cavity encapsulated outside the shell through feedthrough. The connecting cavity transmits the signal to the electrode through connection with the in-body extended wire, thereby stimulating the target point. The pulse transmitter is generally fixed on the chest or under the armpit.

[0003] When an existing pulse generator fails or is damaged, it needs to be completely removed from the chest ribs. Reinstallation requires re-drilling the hole, which will cause secondary damage to the patient. The existing pulse generator lacks a protective device between the human skin and the pulse generator, which poses a risk of skin abrasion. Therefore, to address the above problems, a pulse generator for an implantable neural electrical stimulation system is proposed. Utility Model Content

[0004] The purpose of the present invention is to provide a pulse generator for an implantable neural electrical stimulation system to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pulse generator of an implantable neural electrical stimulation system includes a fixing seat, a first fixing hole is provided at the top of the fixing seat, a screw is spirally connected to the inside of the first fixing hole, a fixing shell is fixedly connected to the top of the fixing shell, a first limiting groove is provided at the top of the fixing shell, a pulse generator is slidably connected to the inside of the first limiting groove, a second limiting groove is provided at the bottom end of the pulse generator, a first limiting block located on the inner side of the second limiting groove is fixedly connected to the inside of the first limiting groove, a second limiting block is fixedly connected to the end of the first limiting block away from the fixing shell, a second fixing hole is provided at the top of the second limiting block, a third fixing hole is provided at the top of the pulse generator and is located above the second limiting groove, a clip is engaged with the inner side of the third fixing hole and the second fixing hole.

[0007] Preferably, a rubber layer is fixedly connected to the outer side of the fixed shell, and a protective shell is snap-connected to the outer side of the rubber layer.

[0008] Preferably, there are four first fixing holes, which are symmetrically arranged on the surface of the fixing base.

[0009] Preferably, the inner diameter of the protective shell is one millimeter smaller than the outer diameter of the rubber layer, and the protective shell and the rubber layer have the same shape.

[0010] Preferably, the second limiting groove is opened into a T-shape from bottom to top, and the shape is consistent with the shape of the first limiting block and the second limiting block combined.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. In the utility model, by providing the fixing seat, the first fixing hole, the screw, the fixing shell, the first limiting groove, the second limiting block, the second fixing hole, the pulse generator, the clip, the third fixing hole and the second limiting groove and other components, the fixing seat can be installed on the human body through the provided screws and the first fixing hole, and then the pulse generator is engaged in the first limiting groove, and the pulse generator is continuously pressed. Under the action of the second limiting groove, the first limiting block and the second limiting block are all engaged. At this time, the second fixing hole and the third fixing hole completely overlap, and then the clip is put into the second fixing hole and the third fixing hole, and then the clip is pressed to expand the clip to fix the pulse generator in the fixing seat. When replacement is required, there is no need to disassemble the entire device. The pulse generator can be taken out by simply pulling it upward and removing the clip. This solves the problem that when the existing pulse generator fails and is damaged, the pulse generator needs to be removed from the chest ribs as a whole, and reinstallation requires re-drilling the hole, which will cause secondary damage to the patient.

[0013] 2. In the present invention, the protective shell is put on the surface of the rubber layer by providing components such as a fixed shell, a fixed seat, a rubber layer and a protective shell. Since the rubber layer is flexible, its diameter is slightly larger than that of the protective shell, which makes the protective shell and the fixed shell fixed tighter. The protective shell can play a protective role between the pulse generator and the skin. The protective shell is made of soft medical silicone material, thereby solving the problem that the existing pulse generator lacks a protective device between the human skin and the pulse generator, and there is a risk of abrasion of the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the detailed structure of the utility model from a top view;

[0017] Figure 4 This is a side structural diagram of the pulse generator of the utility model;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the pulse generator of the utility model from above.

[0019] In the figure: 1. fixing seat; 2. first fixing hole; 3. screw; 4. fixing shell; 5. rubber layer; 6. first limiting groove; 7. first limiting block; 8. second limiting block; 9. second fixing hole; 10. pulse generator; 11. clip; 12. third fixing hole; 13. second limiting groove; 14. protective shell. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] In addition, it should be noted that the use of "first", "second" and the like words to limit parts, only for the corresponding parts for easy to distinguish, such as no other declaration, the above words have no special meaning, therefore can not be understood as the limit of the scope of protection of the present application.

[0023] Please refer to Figure 1-5 The utility model provides a technical scheme:

[0024] A kind of pulse generator of implantable nerve electric stimulation system, including fixed seat 1, the top of fixed seat 1 is equipped with first fixed hole 2, screw 3 is spirally connected in the inside of first fixed hole 2, the top of fixed seat 1 is fixedly connected with fixed shell 4, the top of fixed shell 4 is equipped with first limiting slot 6, pulse generator 10 is slidably connected in the inside of first limiting slot 6, the bottom of pulse generator 10 is equipped with second limiting slot 13, first limiting block 7 in the inside of second limiting slot 13 is fixedly connected in the inside of first limiting slot 6, second limiting block 8 is fixedly connected to the end of first limiting block 7 away from fixed shell 4, second fixed hole 9 is equipped at the top of second limiting block 8, third fixed hole 12 is equipped at the top of pulse generator 10, above second limiting slot 13, third fixed hole 12 and the inside of second fixed hole 9 are clampedly connected with clip 11.

[0025] The outside of fixed shell 4 is fixedly connected with rubber layer 5, the outside of rubber layer 5 is clampedly connected with protective shell 14, the number of first fixed hole 2 is four, and symmetrically arranged on the surface of fixed seat 1, the inside diameter of protective shell 14 is less than the outside diameter of rubber layer 5 by one millimeter, and the shape of protective shell 14 and rubber layer 5 is consistent, second limiting slot 13 is opened as a T shape from bottom to top, and the shape is consistent with the shape of first limiting block 7 and second limiting block 8 combined.

[0026] Workflow: When the pulse generator of the implantable neuro-electric stimulation system needs to be used, the fixing seat 1 can be installed on the human body through the set screw 3 and the first fixing hole 2, then the pulse generator 10 is clamped into the first limiting groove 6, and the first limiting block 7 and the second limiting block 8 are clamped in under the action of the second limiting groove 13, at this time, the second fixing hole 9 and the third fixing hole 12 are completely overlapped, then the clip 11 is put into the second fixing hole 9 and the third fixing hole 12, then the clip 11 is pressed, the clip 11 is expanded to fix the pulse generator 10 in the fixing seat 1, when it needs to be replaced, the pulse generator 10 can be taken out only by pulling out and taking off the clip 11 upwards without overall disassembly, after the fixing seat 1 and the pulse generator 10 are installed, the protective shell 14 is clamped on the outside of the rubber layer 5, then the skin can be sutured, since the rubber layer 5 is flexible, the diameter is a little larger than that of the protective shell 14, so that the protective shell 14 and the fixing shell 4 are fixed more tightly, the protective shell 14 can play a protective role between the pulse generator 10 and the skin, the protective shell 14 is made of soft medical silica gel material, which can effectively reduce the abrasion of the skin.

[0027] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pulse generator for an implantable neural electrical stimulation system, comprising a fixing seat (1), characterized in that: The top of the fixing seat (1) is provided with a first fixing hole (2), the interior of the first fixing hole (2) is spirally connected with a screw (3), the top of the fixing seat (1) is fixedly connected with a fixing shell (4), the top of the fixing shell (4) is provided with a first limiting groove (6), the interior of the first limiting groove (6) is slidably connected with a pulse generator (10), the bottom of the pulse generator (10) is provided with a second limiting groove (13), the interior of the first limiting groove (6) is fixedly connected with a first limiting block (7) located inside the second limiting groove (13), the end of the first limiting block (7) away from the fixing shell (4) is fixedly connected with a second limiting block (8), the top of the second limiting block (8) is provided with a second fixing hole (9), the top of the pulse generator (10) is provided with a third fixing hole (12) located above the second limiting groove (13), the inner sides of the third fixing hole (12) and the second fixing hole (9) are engaged with a clip (11).

2. The pulse generator of the implantable neural electrical stimulation system according to claim 1, characterized in that: The outer side of the fixed shell (4) is fixedly connected to a rubber layer (5), and the outer side of the rubber layer (5) is snap-connected to a protective shell (14).

3. The pulse generator of the implantable neural electrical stimulation system according to claim 2, characterized in that: There are four first fixing holes (2) in number, and they are symmetrically arranged on the surface of the fixing seat (1).

4. The pulse generator of the implantable neural electrical stimulation system according to claim 2, characterized in that: The inner diameter of the protective shell (14) is one millimeter smaller than the outer diameter of the rubber layer (5), and the protective shell (14) and the rubber layer (5) have the same shape.

5. The pulse generator of the implantable neural electrical stimulation system according to claim 1, characterized in that: The second limiting groove (13) is opened into a T-shape from bottom to top, and its shape is consistent with the shape of the first limiting block (7) and the second limiting block (8) combined.

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