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Screwing device for fixing deep electrode

A technology of deep electrode and screwdriver, applied in the field of medical devices, can solve the problems of influence, safety and poor stability of deep electrode implantation operation

Pending Publication Date: 2021-09-14
北京华科恒生医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The rotation and movement of the deep electrode along the length direction will have adverse effects on the safety and stability of the deep electrode implantation operation

Method used

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  • Screwing device for fixing deep electrode
  • Screwing device for fixing deep electrode
  • Screwing device for fixing deep electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment discloses a tightener for fixing deep electrodes. refer to Figure 1-3 , including a guide screw 1 and a tightening block 2; the guide screw 1 is a screw provided with a round hole passing through its two ends, the screw rod of the guide screw 1 includes a polished rod part and a threaded part, and the upper end of the guide screw 1 extends from the bottom along its length direction. The top is provided with an external thread section 11 and four claws 12 in turn. The external thread section 11 is arranged on the nut part of the guide screw 1. The claw 4 is integrally formed with the guide screw 1. The claws 12 are arranged along the radial direction of the guide screw 1. The pressure action can produce bending deformation. In another embodiment, the guide screw 1 is a round tube structure, the outer diameters of the two ends of the round tube are different, and the outer sides of the two ends of the round tube are provided with external threads, and the...

Embodiment 2

[0044] refer to Figure 1-4 , Embodiment 2 discloses a tightener for fixing deep electrodes. On the basis of Embodiment 1, an annular groove 14 is provided between the orifice 131 of the first through hole 13 and the claw 12, and the tightener also includes a set In the elastic tube 3 between the annular groove 14 and the tightening block 2, the claw 12 also has a second contact surface 122 in contact with the outer wall of the elastic tube 3; the inside of the elastic tube 3 has a third through hole arranged along its length direction 31, the first through hole 13, the second through hole 23 and the third through hole 31 are arranged coaxially.

[0045] It should be noted that the elastic tube 3 can be as Figure 4 The cylindrical shape shown may also be a regular column such as a square column, a rhombus column, and a polygonal column, and the change of the above shape will not affect the implementation of this embodiment.

[0046] By adopting the above technical solution,...

Embodiment 3

[0048] Embodiment 3 discloses a screwdriver for fixing deep electrodes. On the basis of Embodiment 2, an anti-slip coating (not shown in the figure) is provided on the second contact surface 122 . The non-slip coating is made of elastic rubber or other non-slip materials such as polyurethane.

[0049] By adopting the above technical solution, the elastic tube 3 is squeezed by the inward contraction of the claws 12, and the anti-slip coating increases the friction between the claws 12 and the elastic tube 3, preventing the fixed deep electrode from being subjected to longitudinal pulling force move along the length direction.

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Abstract

The invention relates to a screwing device for fixing a deep electrode. The screwing device comprises a guide screw and a screwing block; the upper end of the guide screw is sequentially provided with an external thread section and a plurality of clamping jaws from bottom to top in the length direction of the guide screw; the lower end of the screwing block is provided with an abutting hole along the central axis of the screwing block; the opening side of the abutting hole is provided with an internal thread section matched with the external thread section, and the guide screw and the screwing block are in threaded connection through the internal thread section and the external thread section; a first through hole penetrating through the guide screw is formed along the central axis of the guide screw; the multiple clamping jaws are distributed around an orifice of the first through hole; the abutting hole is provided with an inner abutting face; the clamping jaws are provided with outer abutting faces making contact with the inner abutting face; the clamping jaws have the trend of moving close to the central axis; a second through hole penetrating through the screwing block is formed along the central axis of the screwing block; and the first through hole and the second through hole are coaxially arranged. In the screwing process of the screwing block, the clamping jaws shrink in the radial direction to fix the deep electrode, and the deep electrode is prevented from rotating and moving in the length direction.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a tightener for fixing deep electrodes. Background technique [0002] At present, implantable deep electrodes can directly record the electrical signals of brain neurons, which more truly reflects the location of the epileptogenic focus, so it is widely used in the field of epilepsy treatment. The deep electrodes are implanted into the brain through guide screws fixed on the skull. In order to obtain stable EEG signals, the deep electrodes need to be fixed to ensure that the implanted position of the deep electrodes in the brain does not change. [0003] In the related art, the deep electrode is fixed by extruding the silicone tube through the relative movement between the tail of the guide screw and the tightening block, and the deformation of the silicone tube in a limited space is used to clamp the deep electrode. Although this technology can fix the deep el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/386A61B5/293
CPCA61B5/386A61B5/293
Inventor 陈晗青安小广李凯旺
Owner 北京华科恒生医疗科技有限公司
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