CN107335135B

CN107335135B - Electrode socket sleeve and electrode socket assembly

Info

Publication number: CN107335135B
Application number: CN201710676167.3A
Authority: CN
Inventors: 许扶; 柏鉴玲
Original assignee: Beijing Pins Medical Co Ltd
Current assignee: Beijing Pins Medical Co Ltd
Priority date: 2017-08-09
Filing date: 2017-08-09
Publication date: 2021-02-09
Anticipated expiration: 2037-08-09
Also published as: CN107335135A

Abstract

The invention discloses an electrode socket sleeve and an electrode socket assembly. The electrode socket sleeve includes first and second connection parts connected to each other. The first connecting portion is provided with a first cavity for inserting an electrode lead. The second connecting part is provided with a second cavity for inserting an extension lead. The first cavity is communicated with the second cavity. At least one annular bulge structure is arranged on the inner wall of the first cavity. The annular projection structure may prevent liquid from entering the second cavity from the first cavity. The annular projection structure thus prevents damage to the components inside the electrode socket sleeve due to liquid penetration, and reduces the probability of failure of the electrode.

Description

Electrode socket sleeve and electrode socket assembly

Technical Field

The invention relates to the field of medical equipment, in particular to an electrode socket sleeve and an electrode socket assembly.

Background

Conventional implantable neurostimulation electrodes typically include a pulse generator, an electrode lead. It is sometimes necessary to introduce an extension wire between the pulse generator and the electrode wire. The extension lead can solve the problem that the electrode lead is not connected with the pulse generator directly for enough length. The extension wire also solves the problem of the mismatch of the interface between the electrode lead end and the pulse generator top cover. The extension lead typically includes a socket end for insertion of the electrode lead and interfacing with the extension lead. A sleeve is usually provided outside the socket end to protect and connect the electrode lead and the extension lead. To facilitate insertion of the electrode lead into the sleeve, the electrode lead and the sleeve often employ a clearance fit. However, when the electrode is implanted in tissue, there is often a risk of liquid leaking through the sleeve to the socket end, which is prone to failure.

Disclosure of Invention

In view of the above, it is desirable to provide a lead socket sleeve and an electrode socket assembly that address the problem of the socket end being susceptible to liquid penetration when the electrode lead and extension lead are implanted in tissue.

The utility model provides an electrode socket sleeve, includes interconnect's first connecting portion and second connecting portion, first connecting portion are provided with the first appearance chamber that is used for inserting the electrode wire, the second connecting portion are provided with the second that is used for inserting the extension wire and hold the chamber, first appearance chamber with the second holds the chamber intercommunication, first appearance intracavity wall is provided with at least one cyclic annular protruding structure.

In one embodiment, the diameter of the first connecting part is smaller than that of the second connecting part, and the first connecting part and the second connecting part are connected through a reducing structure.

In one embodiment, a first limiting structure is arranged on the outer peripheral side of the first connecting part and close to the reducing structure.

In one embodiment, the first limiting structure comprises at least one first annular flange disposed on the surface of the first connecting portion.

In one embodiment, a second limiting structure is arranged at one end, away from the reducing structure, of the outer peripheral side of the second connecting part.

In one embodiment, the second limiting structure comprises at least two second annular flanges arranged at intervals.

The utility model provides an electrode socket subassembly, is including extending the wire, extend the wire including the socket end, extension section and the plug end of electricity connection in proper order, still include wire socket sleeve, the second holds the chamber and is used for accomodating the socket end.

In one embodiment, the socket end is provided with a lead accommodating cavity for inserting the electrode lead, the inner wall of the lead accommodating cavity is provided with a plurality of connecting pieces arranged at intervals, the socket end further comprises at least one electrode fixing part for fixing the electrode lead, and the electrode fixing part is arranged in the lead accommodating cavity and arranged at intervals with the connecting pieces.

In one embodiment, the electrode fixing portion is a blind threaded hole formed in the socket end.

In one embodiment, a plurality of annular sealing bulges are arranged on the inner wall of the lead accommodating cavity, and the annular sealing bulges and the connecting pieces are alternately arranged at intervals.

The invention provides an electrode socket sleeve, which comprises a first connecting part and a second connecting part which are connected with each other. The first connecting portion is provided with a first cavity for inserting an electrode lead. The second connecting part is provided with a second cavity for inserting an extension lead. The first cavity is communicated with the second cavity. At least one annular bulge structure is arranged on the inner wall of the first cavity. When the electrode lead is inserted into the first cavity, the annular bulge structure can extrude the peripheral surface of the electrode lead, so that the annular bulge structure is in close contact with the electrode lead, and the first cavity is sealed with the second cavity. Thus, the annular protrusion structure may prevent liquid from entering the second volume from the first volume. The annular bulge structure can prevent elements inside the electrode socket sleeve from being damaged due to liquid permeation, and the probability of electrode failure is reduced.

Drawings

FIG. 1 is a block diagram of a wire receptacle sleeve according to an embodiment of the present invention;

FIG. 2 is a block diagram of an electrode socket assembly according to an embodiment of the present invention;

fig. 3 is a partial cross-sectional view of an extension wire in an electrode socket assembly according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a wire receptacle sleeve and receptacle end mating according to an embodiment of the present invention.

Description of the main elements

The electrode socket comprises an electrode socket sleeve 10, a first connecting part 110, a first containing cavity 111, a first limiting structure 112, a first annular flange 113, an annular convex structure 114, a second connecting part 120, a second containing cavity 121, a second limiting structure 122, a second annular flange 123, a diameter-changing structure 130, an electrode socket assembly 20, an extension lead 200, a socket end 210, a lead containing cavity 211, a connecting part 212, an electrode fixing part 213, a threaded blind hole 214, an annular sealing bulge 215, a screw 216, an elastic element 217, an extension section 220, a protection tube 221, a protection sleeve 222, a plug end 230, an input contact 231 and an isolating ring 232.

Detailed Description

In order to make the objects, technical solutions and technical effects of the present invention more apparent, specific embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, an embodiment of the invention provides an electrode socket sleeve 10. The electrode socket sleeve 10 includes a first connection part 110 and a second connection part 120 connected to each other. The first connection portion 110 is provided with a first receiving cavity 111 for inserting an electrode lead. The second connecting portion 120 is provided with a second receiving cavity 121 for inserting the extension wire 200. The first receiving chamber 111 and the second receiving chamber 121 are communicated. At least one annular convex structure 114 is arranged on the inner wall of the first cavity 111. The annular protrusion structure 114 may be plural. The first cavity 111 and the second cavity 121 may be cylindrical cavities, or cavities with cross sections in shapes of an ellipse, a closed arc, and the like. The electrode receptacle sleeve 10 may be made of a material with good biocompatibility. Preferably, the electrode socket sleeve 10 may be made of silicon rubber.

It will be understood that the axis of the annular projection 114 is not equal to 90 ° with respect to the axis of the first cavity 111. Preferably, the axis of the annular protrusion 114 may coincide with or be parallel to the axis of the first cavity 111. After the electrode lead is inserted into the first cavity 111, the annular protrusion 114 may be attached to the entire circumference of the electrode lead. The annular protrusion structure 114 may have a certain width to enhance sealing performance. The annular protrusion 114 may also be a sealing structure formed by two sealing rings arranged at intervals.

The annular protrusion structure 114 may seal a contact portion of an electrode lead and the first cavity 111 after the electrode lead is inserted into the first cavity 111. The annular protrusion 114 can prevent liquid from penetrating from the periphery of the electrode lead to the inside of the electrode socket sleeve through the first cavity 111 after the electrode is implanted into a human body. The annular projection 114 thus prevents damage to the internal structure of the electrode socket sleeve 10 due to liquid penetration. The annular protrusion structure 114 may reduce the probability of failure of the implantable neurostimulation electrode.

In one embodiment, the diameter of the first connection portion 110 is smaller than the diameter of the second connection portion 120. The first connection portion 110 and the second connection portion 120 are connected by a diameter-variable structure 130. In the process of implanting the electrode into the human body, the diameter-variable structure 130 may reduce the resistance of the electrode socket sleeve 10 to move in the human body and may reduce the damage to the human tissue.

In one embodiment, a first limiting structure 112 is disposed on an outer peripheral side of the first connecting portion 110 near the reducing structure 130. The first position-limiting structure 112 is used for binding the surgical cable and preventing the surgical cable from falling off. By binding the operation wire to the first position-limiting structure 112, the electrode lead inserted into the first cavity 111 can be tightened to prevent the liquid from penetrating into the second cavity 121 through the first cavity 111. The electrode lead is bound to the first stopper structure 112 by a surgical thread, and the relative position of the electrode lead and the first connection portion 110 may also be fixed.

In one embodiment, the first limiting structure 112 includes at least one first annular flange 113 disposed on a surface of the first connecting portion 110. The first limiting structure 112 is disposed around the first connecting portion 110. The first annular flange 113 may form a groove with the reducing structure 130. The operation line can be embedded into the groove and is not easy to slide. It is understood that the distance between the first annular flange 113 and the reducing structure 130 is suitable for facilitating winding of a surgical thread. The first annular flange 113 may be a separate component or may be integrally formed with the first connecting portion 110. In one embodiment, the first annular flange 113 may be two protruding structures disposed at two ends of a diameter of the first connecting portion 110. The position of the surgical thread can be defined by two of the raised structures, while material can be saved. In one embodiment, the first annular flange 113 may be provided in plurality. The plurality of first spaced-apart annular flanges 113 may increase the number of turns and area of surgical cable windings. Thereby enhancing the close fit of the electrode socket sleeve 10 and the electrode lead.

In one embodiment, a second limiting structure 122 is disposed at one end of the outer peripheral side of the second connecting portion 120 away from the reducing structure 130. The second limiting structure 122 is bound with a surgical cable, so that the surgical cable can be fixedly inserted into the socket end 210 of the second cavity 121, and the sealing performance is enhanced. It will be appreciated that the second stop structure 122 may be similar in structure to the first stop structure 112. The second limiting structure 122 may be far from the diameter changing structure 130. Tying a surgical wire at the second stop structure 122 remote from the reducing structure 130 may reduce radial displacement of the electrode receptacle sleeve 10, enhancing stability between components. It is understood that the number of the second limiting structures 122 may be multiple. When the second limiting structure 122 is multiple, the multiple second limiting structures 122 can be arranged at intervals to increase the number of turns and the area of the wound surgical cable. Thereby enhancing the close fit of the electrode socket sleeve 10 and the extension wire (200) inserted into the electrode socket sleeve 10.

In one embodiment, the second limiting structure 122 includes at least two second annular flanges 123 spaced apart from each other. A groove may also be provided between the two spaced apart second annular flanges 123. The groove serves to further limit the position of the surgical thread.

Referring to fig. 2, an embodiment of the invention further provides an electrode socket assembly 20. The electrode socket assembly 20 includes an extension wire 200 and the electrode socket sleeve 10. The extension wire 200 includes a socket end 210, an extension 220, and a plug end 230 electrically connected in sequence. The second cavity 121 is adapted to receive the socket end 210.

Referring to fig. 3, in one embodiment, the socket end 210 is provided with a wire accommodating cavity 211 for inserting the electrode wire, and a plurality of connecting pieces 212 are arranged at intervals on an inner wall of the wire accommodating cavity 211. The connecting members 212 may be sequentially spaced apart. The socket end 210 may serve as a joint switching member to accommodate the joint of the electrode lead. The extension range of the electrode lead can be flexibly adjusted by the extension lead 200, and the electrode lead is convenient to disassemble and store. A plurality of signal contacts may be disposed on the electrode leads. After the electrode wires are inserted into the wire receiving cavities 211, the connecting members 212 may be disposed in one-to-one correspondence with the signal contacts. The connector 212 may transmit signals to the signal contacts. Different ones of the connectors 212 may be connected to different ones of the signal contacts on the electrode leads. The connection member 212 may be made of a conductive material.

The plug end 230 may be used for connection with a pulse generator. The plug end 230 may be provided with a plurality of spaced apart input contacts 231. An isolation ring 232 may be disposed between adjacent input contacts 231. The isolation ring 232 is made of an insulating material. The plurality of input contacts 231 may be connected in a one-to-one correspondence with a plurality of signal output bits in the pulse generator. The extension part 220 may be provided therein with a plurality of channels for transmitting signals, which are connected to the input contacts 231 in a one-to-one correspondence. The channels may pass signals from the input contacts 231 to the connectors 212 in a one-to-one correspondence. The length of the extension segment 220 may be adjusted according to the location and manner of use of the electrode receptacle assembly 20.

In one embodiment, the extension 220 includes a protective tube 221 and a protective sheath 222. Connecting wires may be disposed in the protective tube 221, and the connecting wires may connect the input contacts 231 with the connectors 212 in a one-to-one correspondence. The end of the electrode lead remote from the signal contact may be provided with a stimulation end. The stimulation tip may be provided with a stimulation contact. The stimulation contacts are connected with the signal contacts in a one-to-one correspondence mode. The stimulation end can send out stimulation signals to the human body part.

In one embodiment, the socket end 210 further includes at least one electrode fixing part 213 for fixing an electrode lead. The electrode fixing part 213 is disposed in the lead receiving cavity 211. The electrode fixing portion 213 is spaced apart from the connecting member 212. The electrode fixing part 213 may fix the electrode lead to the lead receiving chamber 211 by compressing and clamping the electrode lead. The electrode fixing portion 213 may be made of an elastic material. The electrode fixing part 213 may be integrally formed with the lead receiving cavity 211.

In one embodiment, the electrode fixing portion 213 is a blind threaded hole 214 opened at the socket end 210. The bottom of the blind threaded hole 214 may be a flexible material. The screw 216 can press the electrode lead inserted into the lead receiving cavity 211 through the threaded blind hole 214. The threaded blind hole 214 may be fixed with respect to the wire receiving cavity 211. The screw 216 is not directly contacted with the electrode lead wire to prevent the electrode lead wire from being damaged. The flexible material may be a conductive material. A signal may be transmitted to the electrode lead through the electrode fixing part 213.

In one embodiment, a plurality of annular sealing protrusions 215 are disposed on an inner wall of the wire receiving cavity 211. The plurality of annular sealing protrusions 215 are alternately disposed with the plurality of connection members 212. The annular sealing protrusion 215 is used to seal a gap between the circumferential surface of the electrode lead inserted into the lead receiving cavity 211 and the inner wall of the first receiving cavity 111. The annular sealing protrusion 215 may be a structure integrally formed with the wire receiving cavity 211. The diameter of the annular protrusion structure 114 may be slightly smaller than the diameter of the electrode lead. The structure of the annular sealing protrusion 215 may have elasticity to facilitate the electrode lead to enter the lead receiving cavity 211. The plurality of annular sealing protrusions 215 may enhance sealing performance inside the wire receiving chamber 211. Each of the connectors 212 may be individually protected. When one of the connectors 212 contacts the liquid, the other connectors 212 are not affected. Therefore, the plurality of annular seal projections 215 can improve the reliability of the entire electrode.

In one embodiment, the connector 212 includes an elastic member 217 for pressing the electrode lead and transmitting a signal. The connector 212 may transmit a signal to the elastic element 217. The elastic member 217 may be provided at an end of the connection member 212. The elastic member 217 may be integrally formed with the connection member 212 or may be a separately assembled component. After the electrode lead is inserted into the lead accommodating cavity 211, the elastic element 217 is compressed, and meanwhile, the elastic element 217 also compresses the corresponding contact on the electrode lead. The elastic member 217 can prevent a malfunction such as a contact failure. The stability of the electrode in use is improved.

Referring to fig. 4, after the electrode lead is inserted into the socket end 210, the electrode socket sleeve 10 may be fitted outside the socket end 210. The electrode socket sleeve 10 may be used to protect the socket end 210 and may be used to fix the electrode lead. The diameter of the first receiving cavity 111 may be slightly larger than that of the electrode lead, so that the electrode lead can be inserted into the first receiving cavity 111. The electrode lead may enter the socket end 210 through the first receiving cavity 111. The diameter of the second cavity 121 may be slightly larger than the diameter of the socket end 210, subject to the socket end 210 being capable of being inserted into the second cavity 121. The annular protrusion structure 114 may be a part disposed on an inner wall of the first cavity 111, or may be a structure integrally formed with the first cavity 111. The annular protrusion structure 114 may be made of an elastic material. In one embodiment, the annular protrusion 114 may be a structure integrally formed with the first cavity 111. The diameter of the annular protrusion structure 114 may be slightly smaller than the diameter of the electrode lead. The annular protrusion structure 114 may have elasticity to facilitate the electrode lead to enter the first cavity 111. After the electrode lead enters the first cavity 111, the annular protrusion structure 114 may be tightly pressed on the surface of the electrode lead, so as to enhance the sealing performance between the electrode lead and the inner wall of the first cavity 111.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electrode socket assembly comprises an extension lead (200), wherein the extension lead (200) comprises a socket end (210), an extension section (220) and a plug end (230) which are electrically connected in sequence, and is characterized by further comprising an electrode socket sleeve (10), the electrode socket sleeve comprises a first connecting part (110) and a second connecting part (120) which are connected with each other, the first connecting part (110) is provided with a first containing cavity (111) for inserting an electrode lead, the second connecting part (120) is provided with a second containing cavity (121) for inserting the extension lead (200), the first containing cavity (111) is communicated with the second containing cavity (121), and the inner wall of the first containing cavity (111) is provided with at least one annular bulge structure (114);

the second containing cavity (121) is used for containing the socket end (210), the socket end (210) is provided with a wire containing cavity (211) for inserting the electrode wire, the inner wall of the wire containing cavity (211) is provided with a plurality of connecting pieces (212) arranged at intervals, the inner wall of the wire containing cavity (211) is provided with a plurality of annular sealing bulges (215), and the annular sealing bulges (215) and the connecting pieces (212) arranged at intervals are alternately arranged at intervals.

2. The electrode socket assembly of claim 1, wherein the socket end (210) further comprises at least one electrode fixing part (213) for fixing an electrode wire, the electrode fixing part (213) being disposed in the wire receiving chamber (211) and spaced apart from the connecting member (212).

3. The electrode socket assembly of claim 2, wherein the electrode fixing portion (213) is a threaded blind hole (214) opened at the socket end (210).

4. The electrode socket assembly of claim 1, wherein the first connection part (110) has a diameter smaller than that of the second connection part (120), and the first connection part (110) and the second connection part (120) are connected by a diameter-variable structure (130).

5. The electrode socket assembly of claim 4, wherein a first stopper structure (112) is provided at a position of an outer circumferential side of the first connection portion (110) adjacent to the diameter-varying structure (130).

6. The electrode socket assembly of claim 5, wherein the first retaining structure (112) comprises at least one first annular flange (113) disposed on a surface of the first connection portion (110).

7. The electrode socket assembly according to claim 6, wherein the first annular flange (113) is integrally formed with the first connection portion (110).

8. The electrode socket assembly of claim 4 or 5, wherein a second limiting structure (122) is provided at an end of the outer circumferential side of the second connecting portion (120) away from the diameter-varying structure (130).

9. The electrode socket assembly of claim 8, wherein the second retaining structure (122) comprises at least two spaced apart second annular flanges (123).

10. The electrode socket assembly of claim 9, wherein a groove is disposed between the at least two spaced apart second annular flanges (123).