Electrode connection device

Abstract

The present invention relates to the technical field of medical devices, and in particular to an electrode connection device. The electrode connection device comprises a connection end and a plug end, the connection end comprises an upper shell and a lower shell, a slidable lower slider and an upper slider are provided between the upper shell and the lower shell, a printed circuit board assembly that can move up and down is provided inside the lower slider and the upper slider, the printed circuit board assembly comprises a PCB board and a clamping spring welded on the PCB board that can clamp the electrode, and the plug end comprises a cable connected to the printed circuit board assembly and a plug connected to the cable. The electrode connection device has a simple structure, which is convenient for medical staff to put the electrode into the card slot, and there will be no problem of electrode short circuit or poor contact. At the same time, the structure is also convenient for electrode removal, and there will be no damage or breakage of the electrode.

Description

Technical Field

[0001] The present invention relates to a medical device, and in particular to an electrode connecting device. Background Art

[0002] Spinal cord stimulation (SCS), commonly known as an analgesic pacemaker, is a neuromodulation method that involves inserting a stimulating electrode into the epidural space of the spinal canal to stimulate the sensory neurons in the posterior horns of the spinal cord and the posterior column conduction bundles through electric current, thereby blocking the conduction of pain signals to achieve the purpose of treating pain. SCS has long been approved by the US FDA as a method for treating chronic pain in the trunk and limbs. SCS has been developed for nearly 40 years, and its feasibility and high selectivity for the treatment of chronic pain have been well clinically proven.

[0003] During SCS surgery, after the electrodes are placed, test stimulation is required to determine whether the electrode position has reached the target point. The electrode is connected to the test stimulator through the electrode test cable for test stimulation. After the test stimulation is completed, the electrode will be connected to the extension wire. After suturing, one end of the extension wire will be placed outside the body. At this time, the electrode test cable is also required to be connected to the extension wire, and the connection end is attached to the skin surface with medical tape. In addition, after the SCS surgery, in order to verify the therapeutic effect, the electrode test cable also needs to be connected to the test stimulator for a period of time for evaluation testing.

[0004] When the existing spinal cord stimulation electrodes are tested for stimulation during surgery, the connection devices connecting the electrodes and the test stimulator are basically of a switch box design. As described in the authorization announcement No. CN207217919U, the electrode is first placed in the card slot, and then the upper cover is closed to press the electrode into the spring. However, in the process of placing the electrode into the card slot, blood may be stuck on the hands of the medical staff, which will contaminate the electrode and may also cause the electrode to short-circuit or have poor contact. After the diagnostic test is completed, when the electrode is taken out, the electrode in the card slot may be damaged or broken due to uneven force. Summary of the invention

[0005] The present invention aims to solve the above-mentioned defects and provides an electrode connecting device.

[0006] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve its technical problems is: this electrode connecting device includes a connecting end and a plug end, the connecting end includes an upper shell and a lower shell, a slidable lower slider and an upper slider are provided between the upper shell and the lower shell, a printed circuit board assembly that can move up and down is provided inside the lower slider and the upper slider, the printed circuit board assembly includes a PCB board and a retaining spring welded on the PCB board that can clamp the electrode, and the plug end includes a cable connected to the printed circuit board assembly and a plug connected to the cable.

[0007] According to another embodiment of the present invention, the PCB board is further provided with a core wire hole for welding the inner core wire of the cable and a spring retaining hole, and at least 4 bosses are provided on both sides of the PCB board.

[0008] According to another embodiment of the present invention, the upper shell further includes a retaining ring groove for accommodating the retaining ring, at least one through hole for accommodating an electrode, at least 2 push-button holes, and at least 4 limit grooves for limiting the boss.

[0009] According to another embodiment of the present invention, the clamping spring further comprises a pin inserted into and welded to a clamping spring hole of a PCB board and a U-shaped electrode groove that can clamp the electrode.

[0010] According to another embodiment of the present invention, the upper ends of the lower slider and the upper slider are further provided with a push key installed in the push key hole, and the push key can slide left and right in the push key hole;

[0011] At least four guide grooves are provided on the sides of the lower slider and the upper slider;

[0012] At least four hemispheres and elastic members are arranged on the bottom surfaces of the lower slider and the upper slider.

[0013] According to another embodiment of the present invention, the guide groove is further in a zigzag structure, including a lower portion, an upper portion and an inclined portion connecting the lower portion and the upper portion.

[0014] According to another embodiment of the present invention, the elastic member is further comprised of a cantilever beam structure having elasticity.

[0015] According to another embodiment of the present invention, the lower shell is further provided with at least four slide grooves for the hemisphere to slide, and is also provided with a front stopper and a rear stopper for blocking the elastic member.

[0016] The beneficial effects of the present invention are as follows: the electrode connection device has a simple structure, which makes it convenient for medical staff to put the electrode into the card slot without causing problems such as electrode short circuit or poor contact. At the same time, the structure also makes it convenient to remove the electrode without causing electrode damage or breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of the lower slider of the electrode connection device of the present invention in the initial state and the upper slider in the working state;

[0019] Figure 2 It is a structural exploded diagram of the electrode connection device of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the main view of the upper shell;

[0021] Figure 4 It is a structural schematic diagram of the right view of the upper shell;

[0022] Figure 5 Schematic diagram of the upper and lower slider structures Figure 1 ;

[0023] Figure 6 Schematic diagram of the upper and lower slider structures Figure 2 ;

[0024] Figure 7 is a schematic diagram of the structure of a printed circuit board assembly;

[0025] Figure 8 It is a schematic diagram of the PCB board structure;

[0026] Fig. 9 It is a schematic diagram of the retaining spring structure;

[0027] Fig.10 Schematic diagram of the lower shell structure;

[0028] Fig.11 The schematic diagram of the structure of the embodiment shows that the electrodes are installed and the upper shell is hidden.

[0029] Wherein: electrode connection device 1, connection end 10, upper shell 11, limit groove 111, retaining spring groove 112, push button hole 113, through hole 114, column hole 115, cable upper groove 116, lower slider 12, guide groove 121, lower part 1211, inclined part 1212, upper part 1213, hemisphere 122, elastic member 123, push button 124, printed circuit board assembly 13, PCB board 131, retaining spring hole 1311, core wire hole 1312, boss 1313, retaining spring 132, pin 1321, electrode groove 1322, lower shell 14, slide groove 141, rear stopper 142, front stopper 143, column 144, cable lower groove 145, upper slider 15, plug end 20, cable 21, core wire 211, plug 22, protective tube 23, electrode 2, electrode ring 21. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 , 2As shown in FIG. 11, the structure of the electrode connecting device includes a connecting end 10 and a plug end 20, the connecting end 10 includes an upper shell 11 and a lower shell 14, and a slidable lower slider 12 and an upper slider 15 are provided on both sides between the upper shell 11 and the lower shell 14, and a printed circuit board assembly 13 that can move up and down is provided inside the lower slider 12 and the upper slider 15, the printed circuit board assembly 13 includes a PCB board 131 and a retaining spring 132 welded on the PCB board 131 and capable of clamping the electrode 2, and the plug end 20 includes a cable 21 connected to the printed circuit board assembly 13 and a plug 22 connected to the cable 21.

[0032] like Figure 7 , 8 As shown, the PCB board 131 is provided with a core wire hole 1312 for welding the inner core wire 211 of the cable 21 and a spring hole 1311 , and at least four bosses 1313 are provided on both sides of the PCB board 131 .

[0033] like Figure 3 , 4 As shown, the upper shell 11 is provided with a retaining ring groove 112 for accommodating the retaining ring 132, at least one through hole 114 for accommodating the electrode 2, at least two push-button holes 113, and at least four limiting grooves 111 for limiting the boss 1313.

[0034] like Fig. 9 As shown, the clamping spring 132 is composed of a pin 1321 inserted into and welded to the clamping spring hole 1311 of the PCB board 131 and a U-shaped electrode groove 1322 that can clamp the electrode 2.

[0035] like Figure 5 , 6 As shown, the upper ends of the lower slider 12 and the upper slider 15 are provided with a push button 124 installed in the push button hole 113, and the push button 124 can slide left and right in the push button hole 113;

[0036] like Figure 5 , 6 As shown, at least four guide grooves 121 are provided on the sides of the lower slider 12 and the upper slider 15;

[0037] like Figure 5 , 6 As shown, at least four hemispheres 122 and elastic members 123 are provided on the bottom surfaces of the lower slider 12 and the upper slider 15 .

[0038] like Figure 5 , 6 As shown, the guide groove 121 is a zigzag structure, including a lower portion 1211 , an upper portion 1213 , and an inclined portion 1212 connecting the lower portion 1211 and the upper portion 1213 .

[0039] like Figure 6As shown, the elastic member 123 is a cantilever beam structure with elasticity.

[0040] like Fig.10 As shown, the lower shell 14 is provided with at least four slide grooves 141 for the hemisphere 122 to slide, and is also provided with a front stopper 143 and a rear stopper 142 for blocking the elastic member 123 . Example

[0041] See also Figure 1 and Fig.11 , the lower slider 12 is in the initial state, the push button 124 of the lower slider 12 is at the left end of the push button hole 113 of the upper shell 11, and the elastic member 123 of the lower slider 12 is at the rear of the front stopper 143 of the lower shell 14. When there is no force acting on the lower slider 12, the elastic member 123 cannot pass the front stopper 143 due to the obstruction of the front stopper 143. At this time, the printed circuit board assembly 13 is at the lower part of the guide groove 121 of the lower slider 12, and the retaining spring 132 is not in contact with the electrode 2.

[0042] When a force is applied to the push button 124 of the upper slider 15, the elastic member passes over the front stopper 143 and the rear stopper 142, and the upper slider 15 changes from the initial state to the working state. At this time, the printed circuit board assembly 13 moves from the lower part of the guide groove 121 to the upper part. Due to the limitation of the limit groove 111 of the upper shell 11, the printed circuit board assembly 13 can only move up and down. At this time, the retaining spring 132 contacts the electrode 2. Since the elastic member 123 passes over the rear stopper 142, if no force is applied to the push button 124, the elastic member 123 cannot pass over the rear stopper 143, so the upper slider 15 is always in the working state.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electrode connection device, comprising a connection end (10) and a plug end (20), characterized in that: The connection end (10) comprises an upper shell (11) and a lower shell (14); a slidable lower slider (12) and an upper slider (15) are provided between the upper shell (11) and the lower shell (14); a printed circuit board assembly (13) that can move up and down is provided inside the lower slider (12) and the upper slider (15); the printed circuit board assembly (13) comprises a PCB board (131) and a clamping spring (132) welded on the PCB board (131) and capable of clamping the electrode (2); the plug end (20) comprises a cable (21) connected to the printed circuit board assembly (13) and a plug (22) connected to the cable (21); the upper shell (11) is provided with a clamping spring groove (112) for accommodating the clamping spring (132), at least one through hole (114) capable of accommodating the electrode (2), and a plurality of through holes (114) for accommodating the electrode (2). A limit groove (111) is provided with at least two push key holes (113) and at least four limiting bosses (1313); the upper ends of the lower slider (12) and the upper slider (15) are provided with push keys (124) installed in the push key holes (113); the push keys (124) can slide left and right in the push key holes (113); the side surfaces of the lower slider (12) and the upper slider (15) are provided with at least four guide grooves (121); the bottom surfaces of the lower slider (12) and the upper slider (15) are provided with at least four hemispheres (122) and elastic members (123); the lower shell (14) is provided with at least four slide grooves (141) for the hemispheres (122) to slide; and a front stopper (143) and a rear stopper (142) for blocking the elastic member (123) are also provided.

2. The electrode connection device according to claim 1, characterized in that: The PCB board (131) is provided with a core wire hole (1312) for welding the inner core wire (211) of the cable (21), and is also provided with a spring retaining hole (1311). At least four bosses (1313) are provided on both sides of the PCB board (131).

3. The electrode connection device according to claim 1, characterized in that: The clamping spring (132) is composed of a pin (1321) inserted into and welded to a clamping spring hole (1311) of a PCB board (131), and a U-shaped electrode groove (1322) capable of clamping the electrode (2).

4. The electrode connection device according to claim 1, characterized in that: The guide groove (121) is a zigzag structure, comprising a lower portion (1211), an upper portion (1213), and an inclined portion (1212) connecting the lower portion (1211) and the upper portion (1213).

5. The electrode connection device according to claim 1, characterized in that: The elastic member (123) is a cantilever beam structure having elasticity.

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