WO2023051484A1

WO2023051484A1 - Connection device and electrical neurostimulation system

Info

Publication number: WO2023051484A1
Application number: PCT/CN2022/121532
Authority: WO
Inventors: 徐周东; 吴国良; 章海涛
Original assignee: 苏州景昱医疗器械有限公司
Priority date: 2021-09-30
Filing date: 2022-09-27
Publication date: 2023-04-06
Also published as: CN113809593B; CN113809593A

Abstract

Provided in the embodiments of the present application are a connection device and an electrical neurostimulation system. The connection device comprises: a channel assembly and a connection assembly, the connection assembly being connected to the channel assembly, wherein the connection assembly comprises a connector and a top fastener, the top fastener passing through a first fixing hole and being used for abutting an insert which is inserted into a connecting channel; and a protective sleeve, wherein the protective sleeve is wrapped around the outside of the channel assembly and the connection assembly, and a first pressing portion of the top fastener is pressed against a first pressing surface so as to close a second fixing hole. Thus, the connection assembly is connected to the channel assembly for the insert to penetrate therethrough; the top fastener passes through the second fixing hole and the first fixing hole and is used to close the second fixing hole, and the top fastener abuts against the insert so as to fix the insert; the process of assembling the top fastener is simplified; and a sealing surface is added by means of cooperation of the first pressing portion and the first pressing surface, such that a leakage point is reduced by means of omitting a sealing block and a mounting hole, which are in the prior art, thereby improving the waterproof performance of the connection device.

Description

Connecting Devices and Electrical Nerve Stimulation Systems

This application claims the priority of the Chinese patent with application number 202111165391.9 filed on September 30, 2021, which is incorporated by reference in its entirety.

technical field

The present application relates to the technical field of waterproofing of electrical nerve stimulation systems, in particular to connection devices and electrical nerve stimulation systems.

Background technique

The electrical nerve stimulation system includes a stimulator, an extension wire and a stimulating electrode, the stimulator is connected to one end of the extension wire, the insertion part of the electrode wire of the stimulation electrode is inserted into the connecting channel of the connecting device of the extension wire, and the other end of the extension wire is connected to the stimulator .

In actual application, especially in the process of product soaking test, it is unavoidable for liquid to leak inside the connecting device, and the bonding force between the silica gel and the metal ring is weak, and it is easy to generate gaps, and the liquid will enter through the gaps through capillary action The electrical connection, causing leakage at this place affects the stability of the electrical connection.

The Chinese patent with the publication number CN111529936A discloses a nerve electrical stimulation system. The extension wire of the nerve electrical stimulation system has a channel, and the electrode wire is inserted into the channel and docked with the extension wire. The fixing assembly includes a fixing block at least partially embedded in the channel and a fixing piece that can be locked into the fixing block. The fixing piece is at least partially inserted into the receiving hole through the fixing hole. After the fixing piece is inserted into the fixing block, it contacts with the fixing block Clamp the electrode lead to fix the electrode lead in the channel. The fixing block is also provided with an installation hole communicating with the receiving hole.

The fixing method of the extension wire and the electrode wire disclosed in paragraph 0032 of the specification of CN111529936A is: firstly take out the PIN needles respectively located in the fixing hole and the installation hole, and cut a word on the silicone above the location of the fixing hole and the installation hole Insert the T-like fixing piece upside down and enter the fixing block from the mounting hole, use a screwdriver or wrench to reach into the first groove and turn the fixing piece, the thread on the outer circumference of the locking part matches the thread in the fixing hole, The fixing part enters and locks into the fixing block, at this time, the locking part enters and fixes the hole, the protruding part enters the receiving cavity through the mounting hole and the receiving hole, and finally the sealing block is inserted into the mounting hole to seal the mounting hole. Then insert the electrode wire into the channel of the connector, pass through the receiving hole and reach the desired position, so that the electrode wire is electrically connected to the extension wire, and use a screwdriver or a wrench to rotate the locking part downward through the slot. The wrench or screwdriver acts on the locking part and extends into the second groove. The thread on the outer circumference of the locking part cooperates with the thread in the fixing hole, so that the protruding part is inserted into the receiving hole and contacts the extension wire. Continue to rotate the locking part downwards until the protruding part compresses the extension lead in the passage, and relatively fixes the electrode lead and the extension lead.

The problem with the fixing method of the extension lead and the electrode lead in CN111529936A is that the assembly method is cumbersome, and there is a risk of leakage at the threaded connection between the fixing piece and the fixing block and the connection between the sealing block and the mounting hole.

Contents of the invention

The purpose of this application is to provide a connection device and a nerve electrical stimulation system, specifically to strengthen the sealing of the connection between the parts of the connection device, simplify the assembly process, and effectively solve the problem of liquid leakage in the prior art, which affects the stability of the electrical connection sex issue.

The purpose of this application adopts following technical scheme to realize:

In a first aspect, the present application provides a connection device, the connection device has a connection channel into which an insert is inserted, and the connection device includes: a channel assembly, the channel assembly has a first accommodating hole; a connection assembly, the The connection assembly is connected with the channel assembly, the connection assembly includes a connector and a top fastener, the connector has a second accommodating hole and a first fixing hole, the second accommodating hole and the first accommodating hole The hole communicates with and constitutes a part of the connecting channel, the first fixing hole communicates with the second accommodating hole, and the top fastener passes through the first fixing hole and is used to abut against and insert into the connecting channel. Insert, the top fastener is provided with a first pressing part; a protective sleeve, the protective sleeve is wrapped outside the channel assembly and the connecting assembly, and the protective sleeve is provided with the first fixing hole The position corresponding to the second fixing hole, the second fixing hole has a first pressing surface, when the top fastener passes through the first fixing hole and the second fixing hole, the top fastener The first pressing part is pressed against the first pressing surface to close the second fixing hole. The beneficial effect of this technical solution is that the connecting component is connected with the channel component for the passage of the insert; the top fastener passes through the second fixing hole and the first fixing hole, and is used to close the second fixing hole, and at the same time press against the insert to The insert is fixed, and compared with the prior art, the assembly process of the top fastener is simplified, and through the cooperation of the first pressing part and the first pressing surface, a sealing surface is added, and by omitting the prior art Sealing blocks and mounting holes reduce one leak point and improve the waterproof performance of the connection device. The protective sleeve is used to isolate the liquid from the channel component and the connection component; the entire connection device can prevent the liquid in the external environment from penetrating into the connection device, and protect the safety and stability of the electrical connection of the internal insert.

In some optional embodiments, the first pressing part is an annular structure arranged on the outer periphery of the top fastener, and the first pressing surface is an annular structure arranged in the second fixing hole. The top of the steps.

In some optional embodiments, when the top fastener passes through the first fixing hole and the second fixing hole, the top fastener forms a threaded connection with the first fixing hole.

In some optional embodiments, the protective cover is made of soft rubber, and the connector also has an abutting portion extending axially along the first fixing hole, and the top fastener passes through the When the first fixing hole and the second fixing hole are connected, a part of the inner side wall of the second fixing hole is compressed and located between the top fastener and the abutting portion.

In some optional embodiments, the connection assembly further includes a top water seal and a water seal ring, the water seal ring is sleeved on the outer periphery of the top water seal, and the top water seal and the water seal ring accommodate In the second fixing hole, the water sealing ring is in sealing contact with the inner wall of the second fixing hole to close the second fixing hole.

In some optional embodiments, the connection device has a connection channel into which the insert is inserted, and the connection device includes: a channel component, the channel component has a first accommodating hole; a connection component, the connection component and The channel assembly is connected, the connection assembly includes a connector and a top fastener, the connector has a second accommodating hole and a first fixing hole, the second accommodating hole communicates with the first accommodating hole and Constituting a part of the connecting channel, the first fixing hole communicates with the second accommodating hole, the first fixing hole has a third pressing surface, and the top fastener passes through the first fixing hole And it is used to abut against the insert inserted into the connecting channel, the top fastener is provided with a first pressing part, and the top fastener is installed on the first

In some optional embodiments, the connecting assembly further includes a first sealing ring, a first annular groove facing the first pressing surface is provided on the first pressing part, and the first sealing At least a part of the ring is accommodated in the first annular groove of the first pressing part, the first pressing surface is the annular top surface of the second fixing hole, and the first sealing ring is arranged on Between the first pressing part and the first pressing surface.

In some optional embodiments, the connecting device further includes a protective sleeve, the protective sleeve is wrapped around the channel assembly and the connecting assembly, and the protective sleeve is provided with holes corresponding to the positions of the first fixing holes. the second fixing hole.

In some optional embodiments, the channel assembly includes a plurality of channel connectors and a plurality of insulators, the inner holes of the channel connectors and the inner holes of the insulators form the first accommodating hole, the The channel connectors and insulating members are arranged alternately, and a second sealing ring is provided at the connection between the channel connectors and adjacent insulating members. In some optional embodiments, the two ends of the channel connector are respectively provided with a first annular outer shoulder and the first annular inner shoulder, and the two ends of the insulating member are respectively provided with a second annular outer shoulder. and the second annular inner shoulder, the first annular outer shoulder is connected to the second annular inner shoulder, and a second seal is provided between the connecting surface of the first annular outer shoulder and the second annular inner shoulder The first annular inner shoulder is connected to the second annular outer shoulder, and a second sealing ring is arranged between the connecting surfaces of the first annular inner shoulder and the second annular outer shoulder.

In some optional embodiments, the two ends of the connector respectively have a third annular outer shoulder and a third annular inner shoulder, and the two ends of the connector are respectively connected to an insulator, and the third annular The outer shoulder is connected to the second annular inner shoulder of an insulator, and a second sealing ring is arranged between the connecting surface of the third annular outer shoulder and the second annular inner shoulder, and the third annular inner shoulder The platform is connected with the second annular outer shoulder of an insulator, and a second sealing ring is arranged between the connecting surface of the third annular inner shoulder and the second annular outer shoulder.

In some optional embodiments, the connection device further includes an outer sleeve, the outer sleeve is tightly sleeved outside the channel assembly and the connection assembly, the protective sleeve is made of silica gel, and the protective sleeve is wrapped around the Out of the casing described above.

In the second aspect, the present application provides a nerve electrical stimulation system, the nerve electrical stimulation system includes a stimulator, an extension wire and a stimulation electrode, the extension wire includes a connection device, and the connection device is any one of the above-mentioned The connection device; the stimulator is connected to one end of the extension wire, the stimulation electrode is inserted into the connection channel of the connection device as an insert, and the other end of the extension wire is connected to the stimulation electrode through the connection device; or,

The electrical nerve stimulation system includes a stimulator, an extension wire and a stimulating electrode, the connection device is the connection device described in any one of the above, the stimulator is connected to one end of the extension wire, and the electrode wire of the stimulation electrode is a connection insert, the insert is inserted into the connection channel of the connection device, and the other end of the extension wire is connected to the stimulating electrode through the connection device; or,

The electrical nerve stimulation system includes a stimulator, an extension lead and a stimulating electrode, the connection device is the connection device described in any one of the above, the stimulator is connected to one end of the extension lead, and the other end of the extension lead is The connecting insert, the electrode lead of the stimulating electrode is connected to the connecting device, the inserting part is inserted into the connecting channel of the connecting device, and the extension wire is connected to the stimulating electrode through the connecting device.

Description of drawings

The application will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of the cooperation between the connecting device and the insert in Example 1 of the present application;

Fig. 2 is a schematic cross-sectional view of the connection device of Embodiment 1 of the present application;

Fig. 3 is an exploded schematic diagram of a partial structure of a connecting device according to Embodiment 1 of the present application;

Fig. 4 is a partial cross-sectional schematic view of the connection assembly and the passage assembly of Embodiment 1 of the present application;

Fig. 5 is a schematic cross-sectional view of the outer sleeve of Example 1 of the present application;

Fig. 6 is a partial cross-sectional schematic diagram of the channel assembly of Embodiment 1 of the present application;

Fig. 7 is a schematic partial cross-sectional view of the connecting device according to Embodiment 1 of the present application;

Fig. 8 is an exploded schematic view of the connection assembly of Embodiment 2 of the present application;

Fig. 9 is an exploded cross-sectional schematic view of the connection assembly of Embodiment 2 of the present application;

Fig. 10 is an exploded schematic view of the connection assembly of Embodiment 3 of the present application;

Fig. 11 is an exploded cross-sectional schematic diagram of the connection assembly of Embodiment 3 of the present application;

Fig. 12 is a schematic structural diagram of a nerve electrical stimulation system according to an embodiment of the present application;

Fig. 13 is a schematic structural diagram of a nerve electrical stimulation system according to another embodiment of the present application;

Fig. 14 is a schematic structural diagram of an insert in an embodiment of the present application.

Among them: 100. Connection device; 1. Connection assembly; 11. Top water seal; 12. Water seal ring; 13. Top fastener; 14. Second fixing hole; 15. Protective sleeve; 16. Connector; 17. The first fixing hole; 18. The second accommodation hole; 19. The first pressing part; 20. The first pressing surface; 21. The abutting part; 22. The third annular outer shoulder; 23. The second sealing ring ; 24, the third annular inner shoulder; 25, the installation hole; 26, the flexible pipe; 27, the outer sleeve; 3, the passage assembly; 31, the first accommodation hole; , the first annular inner shoulder; 35, the second annular inner shoulder; 36, the second annular outer shoulder; 37, the first annular outer shoulder; 41, the first annular groove; 42, the first sealing ring; 43. The third pressing surface; 44. The second pressing surface; 45. The third sealing ring; 46. The second pressing part; 47. The end fastener; 48. The second annular groove; 51. Stimulation 52, extension lead; 53, stimulation electrode; 54, electrode lead; 55, insert.

Detailed ways

Below, the present application will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, on the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form a new embodiment. .

Example 1

1-5 and FIG. 7, the embodiment of the present application provides a connection device 100, the connection device 100 has a connection channel for insertion of an insert 55, such as the insertion of a stimulating electrode of a nerve electrical stimulation system. 55 , the connection device 100 includes: a channel assembly 3 , a connection assembly 1 and a protective cover 15 .

The channel assembly 3 has a first accommodating hole 31 , for example, the first accommodating hole 31 is an inner hole of the channel assembly 3 and extends along the length direction of the channel assembly 3 .

The connection assembly 1 is connected with the channel assembly 3, the connection assembly 1 includes a connector 16 and a top fastener 13, the connector 16 has a second accommodating hole 18 and a first fixing hole 17, the second The accommodating hole 18 communicates with the first accommodating hole 31 and constitutes a part of the connecting passage, the first fixing hole 17 communicates with the second accommodating hole 18, and the top fastener 13 passes through the first accommodating hole 18. A fixing hole 17 is used to abut against the inserting piece 55 inserted into the connecting channel, so as to fix the inserting piece 55 in the connecting channel, and the top fastener 13 is provided with a first pressing portion 19 .

The protective sheath 15 is wrapped around the channel assembly 3 and the connection assembly 1, and the second fixing hole 14 corresponding to the position of the first fixing hole 17 is provided on the protective sheath 15, and the second fixing hole 14 has The first pressing surface 20, when the top fastener 13 passes through the first fixing hole 17 and the second fixing hole 14, the first pressing part 19 of the top fastener 13 is pressed against the The first pressing surface 20 is used to close the second fixing hole 14 .

In this technical solution, the connection assembly 1 is connected with the channel assembly 3 for the passage of the insert 55; the top fastener 13 passes through the second fixing hole 14 and the first fixing hole 17, and is used to close the second fixing hole 14 while pressing against The insert 55 is used to fix the insert 55. Compared with the prior art, the assembly process of the top fastener 13 is simplified, and a sealing surface is added through the cooperation of the first pressing part 19 and the first pressing surface 20 , by omitting the sealing block and the installation hole in the prior art, one leakage point is reduced, and the waterproof performance of the connecting device 100 is improved. The protective cover 15 is used to isolate the liquid from the channel assembly 3 and the connection assembly 1; the entire connection device 100 can prevent the liquid in the external environment from penetrating into the connection device 100, and protect the safety and stability of the electrical connection of the internal insert 55. The solution can be applied to the field of implantable medical devices.

Referring to Fig. 1 and Fig. 7, in a specific embodiment, the first pressing part 19 is an annular structure arranged on the outer periphery of the top fastener 13, and the first pressing surface 20 is arranged on the first The top surface of the annular inner step in the two fixing holes 14. In this technical solution, the contact area between the first pressing part 19 and the first pressing surface 20 is large, and the waterproof effect is good.

1-4, in a specific embodiment, when the top fastener 13 passes through the first fixing hole 17 and the second fixing hole 14, the top fastener 13 and the first fixing hole 17 form a threaded connection. In this technical solution, the top fastener 13 directly forms a threaded connection with the first fixing hole 17 while passing through the first fixing hole 17 and the second fixing hole 14, which is easy to operate, fast in connection, and has good sealing and waterproof effects.

Referring to FIGS. 1-4 and 7 , in a specific embodiment, the protective cover 15 is made of soft rubber, such as silicone, and the connector 16 also has an abutment extending along the axial direction of the first fixing hole 17 . part 21, when the top fastener 13 passes through the first fixing hole 17 and the second fixing hole 14, a part of the inner side wall of the second fixing hole 14 is squeezed and is located on the top fastener 13 and the abutting portion 21. In this technical solution, a part of the inner sidewall of the second fixing hole 14 is pressed by the top fastener 13 and the abutment portion 21 and is located between the top fastener 13 and the abutment portion 21, so that the top fastener 13 After installation, a part of the inner wall of the second fixing hole 14 can be pressed against the abutting portion 21, which has a good effect on reducing the gap and preventing leakage.

Referring to Fig. 3, in a specific embodiment, the connection assembly 1 further includes a top water seal 11 and a water seal ring 12, the water seal ring 12 is sleeved on the outer periphery of the top water seal 11, and the top water seal 11 and the water sealing ring 12 are accommodated in the second fixing hole 14 , and the water sealing ring 12 is in sealing contact with the inner wall of the second fixing hole 14 to close the second fixing hole 14 . In this technical solution, the top water seal 11 and the water seal ring 12 cooperate to prevent external liquid from penetrating into the second fixing hole 14, further improving the anti-leakage effect.

Example 2

Referring to FIGS. 1-4 and 8 , in this embodiment, the connecting device 100 has a connecting channel for inserting the insert 55 , and the connecting device 100 includes a channel component 3 and a connecting component 1 , and may also include a protective cover 15 .

The channel assembly 3 has a first accommodating hole 31 , and the channel assembly 3 may be the same as the channel assembly 3 in Embodiment 1, which will not be repeated here.

The connection assembly 1 is connected to the channel assembly 3, the connection assembly 1 includes a connector 16 and a top fastener 13, the connector 16 has a second accommodating hole 18 and a first fixing hole 17, the The second accommodating hole 18 communicates with the first accommodating hole 31 and constitutes a part of the connecting passage, the first fixing hole 17 communicates with the second accommodating hole 18, and the first fixing hole 17 has a third The pressing surface 43, the top fastener 13 passes through the first fixing hole 17 and is used to abut against the insert 55 inserted into the connecting channel, the top fastener 13 is provided with a first pressing part 19. When the top fastener 13 is installed at the first fixing hole 17, the first pressing part 19 is pressed against the third pressing surface 43 to close the first fixing hole 17 .

In this technical solution, the channel assembly 3 and the connection assembly 1 form a peripheral seal, and the top fastener 13 presses against the insert 55 so that the insert 55 is fixed. Compared with the prior art, the assembly process of the top fastener 13 is simplified, And through the cooperation of the first pressing part 19 and the third pressing surface 43, a sealing surface is added, and by omitting the sealing block and the installation hole in the prior art, a leakage point is reduced, and the waterproof performance of the connecting device 100 is improved .

Referring to FIG. 8 , in a specific embodiment, the connection assembly 1 further includes a first sealing ring 42 , and the first pressing portion 19 is provided with a first annular groove 41 facing the first pressing surface 20 , at least a part of the first sealing ring 42 is accommodated in the first annular groove 41 of the first pressing part 19, and the first pressing surface 20 is an annular shape of the second fixing hole 14 On the top surface, the first sealing ring 42 is disposed between the first pressing portion 19 and the first pressing surface 20 . In this technical solution, the first sealing ring 42 is arranged between the first pressing part 19 and the first pressing surface 20, and is used to seal the gap between the first pressing part 19 and the first pressing surface 20, preventing from The liquid infiltrated from the circumference of the first pressing part 19 enters the connecting channel, thereby improving the sealing effect.

Referring to FIG. 3 , in a specific embodiment, the connection device 100 further includes a protective cover 15, which is wrapped around the channel assembly 3 and the connection assembly 1, and the protective cover 15 is provided with the The position of the first fixing hole 17 corresponds to the position of the second fixing hole 14 . In this technical solution, the protective sheath 15 is wrapped outside the channel component 3 and the connecting component 1 , which is beneficial to sealing the gap in the connection between the channel component 3 and the connecting component 1 , and further enhances the sealing performance of the connecting device 100 .

4 and 6, in a specific embodiment, the channel assembly 3 includes a plurality of channel connectors 33 and a plurality of insulators 32, the inner holes of the channel connectors 33 and the inner holes of the insulators 32 form the The first accommodating hole 31 is described, the channel connectors 33 and insulating members 32 are arranged alternately, and the second sealing ring 23 is provided at the connection between the channel connectors 33 and adjacent insulating members 32 . In this technical solution, a plurality of channel connectors 33 and insulators 32 are alternately connected to meet the effectiveness of the electrical connection between the insert 55 in the first accommodating hole 31 and the outer peripheral wire of the channel connector 33, while the channel connectors 33 and the corresponding The second sealing ring 23 at the junction of the adjacent insulating parts 32 is used to seal the gap between the channel connecting part 33 and the insulating part 32, so as to improve the sealing effect.

Referring to FIG. 6 , in a specific embodiment, the two ends of the channel connector 33 are respectively provided with a first annular outer shoulder 37 and a first annular inner shoulder 34 , and the two ends of the insulating member 32 are respectively provided with a second annular shoulder. Two annular outer shoulders 36 and a second annular inner shoulder 35, the first annular outer shoulder 37 is connected with the second annular inner shoulder 35, the first annular outer shoulder 37 is connected with the second annular inner shoulder 35 is provided with a second seal ring 23, the first annular inner shoulder 34 is connected to the second annular outer shoulder 36, the first annular inner shoulder 34 is connected to the second annular outer shoulder 36 A second sealing ring 23 is arranged between the connecting surfaces. In this technical solution, the first annular outer shoulder 37 is connected to the second annular inner shoulder 35 and a part of overlapping area is provided between them, the first annular inner shoulder 34 is connected to the second annular outer shoulder 36 and both There is a part of overlapping area between them, and the overlapping area is conducive to the sealing between the channel connector 33 and the insulating member 32, and at the same time, a second sealing ring is arranged on the connecting surface of the first annular outer shoulder 37 and the second annular inner shoulder 35 23, and the second sealing ring 23 is arranged on the connecting surface of the first annular inner shoulder 34 and the second annular outer shoulder 36 to further strengthen the sealing between the connecting part and the insulating part 32.

Referring to Fig. 4 and Fig. 7, in a specific embodiment, the two ends of the connector 16 respectively have a third annular outer shoulder 22 and a third annular inner shoulder 24, and the two ends of the connector 16 are respectively connected to a Insulator 32, the third annular outer shoulder 22 is connected to the second annular inner shoulder 35 of an insulating member 32, between the connecting surface of the third annular outer shoulder 22 and the second annular inner shoulder 35 A second sealing ring 23 is provided, the third annular inner shoulder 24 is connected with the second annular outer shoulder 36 of an insulator 32 , the third annular inner shoulder 24 is connected with the second annular outer shoulder 36 A second sealing ring 23 is arranged between the connecting surfaces. The beneficial effect of this technical solution is that the third annular outer shoulder 22 and the second annular inner shoulder 35 are connected and a part of overlapping area is provided between them, the third annular inner shoulder 24 and the second annular outer shoulder 36 The two are connected with a part of overlapping area, which is conducive to the sealing between the connector 16 and the insulator 32. At the same time, the third annular outer shoulder 22 and the second annular inner shoulder 35 are provided on the connecting surface. Two sealing rings 23 , and the second sealing ring 23 disposed on the connecting surface of the third annular inner shoulder 24 and the second annular outer shoulder 36 further strengthen the sealing between the connector 16 and the insulating member 32 .

Referring to FIG. 5, in a specific embodiment, the connecting device 100 also includes an outer sleeve 27, which is tightly sleeved outside the channel assembly 3 and the connecting assembly 1, and the protective sleeve 15 is made of silica gel. The protective sheath 15 is wrapped outside the outer sleeve 27 . In this technical solution, on the one hand, the use of the outer sleeve 27 can shrink the channel assembly 3 and the connection assembly 1 together, so that the connection and fit of each part can be more tightly matched; on the other hand, it can play a sealing role to prevent external liquid from penetrating into the connection Inside the device 100 .

It should be noted that the structures of the channel assembly 3 , the connector 16 and the outer sleeve 27 described in this embodiment can also be applied in the first embodiment.

Example 3

Referring to FIG. 10 and FIG. 11 , in this embodiment, the present application also provides a connection assembly 1 for passing an insert 55 , including a connector 16 , a hose 26 and an end fastener 47 .

It should be noted that, as shown in FIG. 8 and FIG. 9, the connection assembly 1 of this embodiment can be applied in the connection device 100 of Embodiment 1 and Embodiment 2. In other words, the connection assembly 1 of this embodiment can be used with the connection device 100 of the embodiment The channel assembly 3 and the protective cover 15 in Embodiment 1 and Embodiment 2 are combined to form a connection device 100 .

Connector 16 has opposite first end and second end, and described connector 16 has the second accommodating hole 18 near the first end and the installation hole 25 near the second end, and described second accommodating hole 18 and installation The hole 25 communicates with the second receiving hole 18 for the insertion piece 55 to pass through.

The inner bore of the hose 26 is used for the passage of the insert 55 .

The end fastener 47 has a through hole for the hose 26 to pass through. When the end fastener 47 is installed at the installation hole 25 of the connector 16, a part of the hose 26 is located at the end. Between the inner wall of the through hole of the fastener 47 and the outer wall of the insert 55 .

In this technical solution, the hose 26 is used to wrap the insert 55. On the one hand, it can fix the insert 55, and the first fixing hole 17 and the top fastener 13 of the connector 16 in Embodiment 1 and Embodiment 2 can be omitted. The second fixing hole 14 of the protective cover 15 reduces a possible leakage point. On the other hand, through the cooperation of the end fastener 47 and the hose 26, the mounting hole 25 near the second end of the connector 16 is formed. Effective sealing to enhance the tightness between the hose 26 and the connector 16. The entire connection assembly 1 is used to prevent the liquid in the external environment from penetrating into the inside of the connection device 100. At the same time, there is no fixed structure with openings on the connector 16. The risk of liquid leakage is reduced, thereby protecting the safety and stability of the electrical connection of the inner insert 55 . Furthermore, the assembly process of the connection assembly 1 is simplified.

Continuing to refer to FIG. 11 , in a specific embodiment, in the connection assembly 1 , in the direction from the first end of the connector 16 toward the second end, the outer diameter of the hose 26 gradually decreases. In this technical solution, the outer diameter of the hose 26 gradually becomes smaller. On the one hand, when the end fastener 47 is installed, the compression force of the end fastener 47 on the hose 26 becomes larger and larger, which can effectively block the external liquid. The hose 26 flows into the second end close to the connector 16, and then enters the interior of the connector 16. On the other hand, the end of the hose 26 with a smaller outer diameter is easy to insert into the end fastener 47, which is convenient for installation.

Continuing to refer to FIG. 11 , in a specific embodiment, in the direction from the first end of the connector 16 toward the second end, the inner diameter of the through hole of the end fastener 47 gradually becomes smaller. In this technical solution, the through hole of the end fastener 47 matches the outer diameter of the hose 26. When the end fastener 47 is installed, the end fastener 47 is in contact with the hose 26 for sealing and fastening. Some of them are in ring-shaped surface contact, with high pressing force and good sealing effect.

Continue referring to FIG. 9 and FIG. 11 , in a specific embodiment, the end fastener 47 is provided with a second pressing portion 46 , the mounting hole 25 has a second pressing surface 44 , and the end fastening When the fastener 47 is installed at the installation hole 25 of the connector 16 , the second pressing portion 46 is pressed against the second pressing surface 44 to close the installation hole 25 . In this technical solution, the second pressing part 46 cooperates with the second pressing surface 44, and a sealing surface is added at the second end of the connector 16 to improve the sealing effect of the connector 16.

Continuing to refer to FIG. 9 and FIG. 11 , in a specific embodiment, the connection assembly 1 may further include a third sealing ring 45 , and the second pressing portion 46 is provided with a first seal facing the second pressing surface 44 . Two annular grooves 48, at least a part of the third sealing ring 45 is accommodated in the second annular groove 48 of the second pressing part 46, the second pressing surface 44 is the installation hole 25 When the end fastener 47 is installed in the installation hole 25 of the connector 16, the third sealing ring 45 is located on the second pressing part 46 and the second pressing surface 44 to close the mounting hole 25. In this technical solution, the third sealing ring 45 is arranged between the second pressing part 46 and the second pressing surface 44, and is used to seal the gap between the second pressing part 46 and the second pressing surface 44, preventing from The circumference of the second pressing portion 46 is infiltrated with liquid.

The present application also provides a nerve electrical stimulation system. The nerve electrical stimulation system includes a stimulator 51, an extension wire 52 and a stimulation electrode 53. The extension wire 52 includes a connection device 100, and the connection device 100 is any one of the above-mentioned The connecting device 100 described in Item 1; the stimulator 51 is connected to one end of the extension lead 52, the stimulating electrode 53 is inserted into the connection channel of the connecting device 100 as an insert 55, and the other end of the extension lead 52 passes through The connecting device 100 is connected to the stimulating electrodes 53 . This technical solution prevents external liquid from penetrating into the connection device 100 and ensures the reliability of the working environment of the nerve stimulation system.

As an alternative embodiment, referring to Fig. 12 and Fig. 14, the electrical nerve stimulation system includes a stimulator 51, an extension lead 52 and a stimulating electrode 53, and the connection device 100 is the connection device 100 described in any one of the above, The stimulator 51 is connected to one end of the extension lead 52, the electrode lead 54 of the stimulating electrode 53 is connected to the insert 55, and the insert 55 is inserted into the connection channel of the connection device 100, and the other end of the extension lead 52 One end is connected to the stimulating electrode 53 through the connecting device 100 .

As another alternative embodiment, referring to Fig. 13 and Fig. 14, the electrical nerve stimulation system includes a stimulator 51, an extension wire 52 and a stimulating electrode 53, and the connection device 100 is the connection device 100 described in any one of the above , the stimulator 51 is connected to one end of the extension lead 52, the other end of the extension lead 52 is connected to the insertion piece 55, the electrode lead 54 of the stimulation electrode 53 is connected to the connection device 100, and the insertion piece 55 is inserted into The connection channel of the connection device 100 , the extension wire 52 is connected to the stimulation electrode 53 through the connection device 100 .

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations to the present invention. Under the circumstances, the above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the invention, and all these changes should fall within the protection scope of the claims of the present invention.

Claims

A connection device, the connection device has a connection channel for insertion of an insert, wherein the connection device comprises:

a channel assembly, the channel assembly has a first receiving hole;

A connection assembly, the connection assembly is connected to the channel assembly, the connection assembly includes a connector and a top fastener, the connector has a second accommodation hole and a first fixing hole, and the second accommodation hole communicate with the first receiving hole and constitute a part of the connecting channel, the first fixing hole communicates with the second receiving hole, the top fastener passes through the first fixing hole and is used for abutting insertion The insert of the connecting channel, the top fastener is provided with a first pressing part;

A protective cover, the protective cover wraps the channel assembly and the connection assembly, and the second fixing hole corresponding to the position of the first fixing hole is arranged on the protective cover, and the second fixing hole has a first A pressing surface, when the top fastener passes through the first fixing hole and the second fixing hole, the first pressing part of the top fastener presses against the first pressing surface to close the second fixing hole.
The connecting device according to claim 1, wherein the first pressing portion is an annular structure arranged on the outer periphery of the top fastener, and the first pressing surface is arranged in the second fixing hole The top surface of the circular inner step.
The connecting device according to claim 1, wherein when the top fastener passes through the first fixing hole and the second fixing hole, the top fastener forms a threaded connection with the first fixing hole.
The connection device according to claim 3, wherein the protective cover is made of soft rubber, and the connector also has an abutting portion extending axially along the first fixing hole, and the top fastener passes through When passing through the first fixing hole and the second fixing hole, a part of the inner side wall of the second fixing hole is squeezed and located between the top fastener and the abutting portion.
The connection device according to claim 1, wherein the connection assembly further comprises a top water seal and a water seal ring, the water seal ring is sleeved on the outer periphery of the top water seal, and the top water seal and water seal A ring is accommodated in the second fixing hole, and the water sealing ring is in sealing contact with the inner wall of the second fixing hole to close the second fixing hole.
A connection device, the connection device has a connection channel for insertion of an insert, wherein the connection device comprises:

a channel assembly, the channel assembly has a first receiving hole;

A connection assembly, the connection assembly is connected to the channel assembly, the connection assembly includes a connector and a top fastener, the connector has a second accommodation hole and a first fixing hole, and the second accommodation hole It communicates with the first accommodation hole and constitutes a part of the connecting passage, the first fixing hole communicates with the second accommodation hole, the first fixing hole has a third pressing surface, and the top fastener An insert that passes through the first fixing hole and is used to abut against and insert into the connecting channel, the top fastener is provided with a first pressing part, and the top fastener is installed in the first fixing hole When in position, the first pressing portion presses against the third pressing surface to close the first fixing hole.
The connecting device according to claim 6, wherein the connecting assembly further comprises a first sealing ring, and the first pressing part is provided with a first annular groove facing the first pressing surface, the At least a part of the first sealing ring is accommodated in the first annular groove of the first pressing part, the first pressing surface is the annular top surface of the second fixing hole, the first sealing The ring is arranged between the first pressing part and the first pressing surface.
The connecting device according to claim 6, wherein, the connecting device further comprises a protective cover, the protective cover wraps the channel component and the connecting component, and the protective cover is provided with the first fixing hole The position corresponds to the second fixing hole.
The connecting device according to claim 1 or 6, wherein the channel assembly comprises a plurality of channel connectors and a plurality of insulators, the inner holes of the channel connectors and the inner holes of the insulators form the first cavity Holes are placed, the channel connectors and insulating members are arranged alternately, and a second sealing ring is provided at the connection between the channel connectors and adjacent insulating members.
The connecting device according to claim 9, wherein, the two ends of the channel connecting member are respectively provided with a first annular outer shoulder and the first annular inner shoulder, and the two ends of the insulating member are respectively provided with a second annular An outer shoulder and a second annular inner shoulder, the first annular outer shoulder is connected to the second annular inner shoulder, and a connecting surface between the first annular outer shoulder and the second annular inner shoulder is provided For the second sealing ring, the first annular inner shoulder is connected to the second annular outer shoulder, and a second sealing ring is arranged between the connection surfaces of the first annular inner shoulder and the second annular outer shoulder.
The connecting device according to claim 10, wherein, the two ends of the connector respectively have a third annular outer shoulder and a third annular inner shoulder, and the two ends of the connector are respectively connected with an insulating member, the The third annular outer shoulder is connected to the second annular inner shoulder of an insulator, and a second sealing ring is arranged between the connecting surface of the third annular outer shoulder and the second annular inner shoulder, and the third The annular inner shoulder is connected to the second annular outer shoulder of an insulator, and a second sealing ring is arranged between the connecting surface of the third annular inner shoulder and the second annular outer shoulder.
The connection device according to claim 1 or 6, wherein the connection device further comprises an outer sleeve, the outer sleeve is tightly sleeved outside the channel assembly and the connection assembly, the protective sleeve is made of silicone material, and the A protective sheath is wrapped around the outer casing.
A nerve electrical stimulation system, wherein the nerve electrical stimulation system includes a stimulator, an extension wire and a stimulation electrode, the extension wire includes a connection device, and the connection device is the connection device described in any one of claims 1 to 12 device;

The stimulator is connected to one end of the extension wire, the stimulation electrode is inserted into the connection channel of the connection device as an insert, and the other end of the extension wire is connected to the stimulation electrode through the connection device; or,

The electrical nerve stimulation system includes a stimulator, an extension lead and a stimulating electrode, the connection device is the connection device according to any one of claims 1 to 12, the stimulator is connected to one end of the extension lead, and the stimulation The electrode wire of the electrode is connected to the insert, the insert is inserted into the connection channel of the connection device, and the other end of the extension wire is connected to the stimulating electrode through the connection device; or,

The electrical nerve stimulation system includes a stimulator, an extension lead and a stimulating electrode, the connection device is the connection device according to any one of claims 1 to 12, the stimulator is connected to one end of the extension lead, and the extension The other end of the wire is connected to the insertion piece, the electrode wire of the stimulating electrode is connected to the connection device, the insertion piece is inserted into the connection channel of the connection device, and the extension wire is connected to the stimulation electrode through the connection device.