Lead electrically connected to stimulator and stimulation system

Abstract

A lead electrically connected to a stimulator and a stimulation system. The lead electrically connected to the stimulator comprises an insulating body (1) and a connecting section (13) at least partially inserted into the stimulator (3). The connecting section (13) comprises a conductive ring (11) mounted on the insulating body (1) and at least one sealing part (2), and the sealing part (2) abuts against a sealing member (31) in the stimulator (3), such that the connecting section inserted into the stimulator (3) is sealed. The lead electrically connected to the stimulator further comprises an air-venting structure provided on the connecting section (13), and the air-venting structure is configured to reduce the insertion and extraction force when the connecting section (13) is inserted into the stimulator (3).

Description

Lead wire and stimulation system electrically connected with stimulator

[0001] This application claims priority to the Chinese patent application No. 202411230847.9, filed on September 3, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of medical devices, for example to a lead wire and a stimulation system electrically connected with a stimulator. BACKGROUND

[0003] In an electrical stimulation treatment system, a stimulator is a kind of medical device widely used in neural modulation, pain management, cardiac pacing and other treatments. In the use process, the accurate and smooth insertion and extraction of the lead wire is an important link to ensure the treatment effect and patient comfort.

[0004] In the related art, in order to prevent body fluids, air or other impurities from entering the inside of the stimulator, and to ensure the safety of the circuit and the patient, the lead wire is usually sealed and connected with the stimulator.

[0005] However, when the lead wire is inserted into the stimulator, the front end of the lead wire gradually enters the inside of the stimulator and increases the space occupied by the lead wire inside the stimulator. Due to the sealing, the gas in the space cannot be discharged, and the air will be compressed in the space, and the air pressure will increase. The increased air pressure will directly act on the lead wire to generate additional insertion and extraction resistance. Not only does this increase the difficulty of inserting and extracting the lead wire, but it can also cause damage to the sealing element or the lead wire due to excessive force, thereby affecting the sealing performance and service life of the stimulator. At the same time, the increased insertion and extraction resistance can also cause unnecessary pain or discomfort to the patient, especially during the treatment process when the lead wire needs to be frequently replaced or adjusted. SUMMARY

[0006] The present application provides a lead wire and a stimulation system electrically connected with a stimulator, which solves the problem that in the related art, the lead wire compresses air when inserted to generate additional insertion and extraction resistance, which increases the difficulty of inserting and extracting the lead wire, and can also damage the sealing element or the lead wire, affecting the sealing performance and service life of the stimulator. It can also solve the problem of unnecessary pain or discomfort to the patient during the treatment process when the lead wire needs to be frequently replaced or adjusted.

[0007] In a first aspect, the present application provides a lead wire electrically connected with a stimulator, comprising:

[0008] an insulating body;

[0009] A connecting section is provided at one end of the insulating body, and is at least partially inserted into the stimulator. The connecting section includes a conductive ring mounted on the insulating body, and at least one sealing portion mounted on the insulating body. The sealing portion abuts against a sealing member in the stimulator to seal the connecting section inserted into the stimulator.

[0010] A gas guiding structure is provided on the connecting section, and is configured to reduce the insertion force when the connecting section is inserted into the stimulator.

[0011] In some embodiments, the gas guiding structure is provided on the outer surface of the connecting section or through the insulating body.

[0012] In some embodiments, the gas guiding structure includes a plurality of gas guiding holes provided on the connecting section. The plurality of gas guiding holes are spaced apart along the axial direction of the connecting section, and are in communication with each other.

[0013] In some embodiments, the gas guiding structure includes a gas guiding channel provided in the connecting section. The gas guiding channel extends through the insulating body along the axial direction of the insulating body.

[0014] In some embodiments, the gas guiding structure includes a gas guiding channel provided in the connecting section and a gas guiding hole provided on the side wall of the connecting section. The gas guiding hole is provided close to the sealing portion and is in communication with the gas guiding channel. An air outlet is provided at the end of the connecting section away from the sealing portion and is in communication with the gas guiding channel.

[0015] In some embodiments, the gas guiding hole is spaced apart.

[0016] In some embodiments, the gas guiding structure includes a gas guiding groove provided on the outer side wall of the connecting section. The gas guiding groove extends along the axial direction of the insulating body.

[0017] In some embodiments, the gas guiding groove is spaced apart along the axial direction of the connecting section.

[0018] In some embodiments, the gas guiding groove includes a first gas guiding groove and a second gas guiding groove. The first gas guiding groove is provided on the outer side wall of the insulating body and is spaced apart. The second gas guiding groove is provided on the outer side wall of the conductive ring and is axially aligned with the first gas guiding groove. The first gas guiding groove is spaced apart from the second gas guiding groove.

[0019] In some embodiments, two sealing portions are spaced apart, and a locking ring is provided between the two sealing portions.

[0020] In a second aspect, the present application provides a stimulation system, comprising:

[0021] a stimulator having a plug-in hole with at least one sealing element in the plug-in hole;

[0022] and a wire electrically connected with the stimulator as described in the first aspect, the wire electrically connected with the stimulator passing through the plug-in hole and being at least partially inserted into the stimulator, a sealing part of the wire electrically connected with the stimulator abutting against the sealing element.

[0023] In some embodiments, the sealing element is arranged to space two apart. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a schematic diagram of a partial structure of a wire electrically connected with a stimulator according to an embodiment of the present application;

[0025] Fig. 2 is a schematic diagram of a gas guiding structure of a wire electrically connected with a stimulator according to an embodiment of the present application;

[0026] Fig. 3 is a schematic diagram of a stimulation system according to an embodiment of the present application;

[0027] Fig. 4 is a schematic diagram of a wire electrically connected with a stimulator according to an embodiment of the present application;

[0028] Fig. 5 is a schematic diagram of a wire electrically connected with a stimulator according to an embodiment of the present application, the wire not being completely inserted into the stimulator;

[0029] Fig. 6 is a schematic diagram of a wire electrically connected with a stimulator according to an embodiment of the present application, the wire not being completely inserted into the stimulator;

[0030] Fig. 7 is a schematic diagram of a gas guiding structure of a wire electrically connected with a stimulator according to an embodiment of the present application, the gas guiding structure being a gas guiding groove arranged to space two apart;

[0031] Fig. 8 is a schematic diagram of a gas guiding structure of a wire electrically connected with a stimulator according to an embodiment of the present application, the gas guiding structure being a gas guiding groove formed by a first gas guiding groove and a second gas guiding groove.

[0032] In the drawings: 1, insulating body; 11, conductive ring; 12, gas guiding hole; 13, connecting section; 14, gas guiding passage; 141, exhaust hole; 142, gas guiding opening; 15, gas guiding groove; 15a, first gas guiding groove; 15b, second gas guiding groove; 2, sealing part; 21, locking ring; 3, stimulator; 31, sealing element; 32, plug-in hole. DETAILED DESCRIPTION

[0033] The present application will be described below in conjunction with the drawings and embodiments. The embodiments described herein are used to explain the present application. For the purpose of description, only the parts related to the present application are shown in the drawings.

[0034] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the meaning of the above terms in this application can be understood as appropriate.

[0035] In this application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first feature and the second feature are in direct contact, or that the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or indicates that the first feature is lower in horizontal height than the second feature.

[0036] In the description of the embodiments, the terms "up", "down", "left", "right" and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. In addition, the terms "first", "second" are used to distinguish in description, and have no special meaning.

[0037] The embodiments of the application disclose a lead wire electrically connected with a stimulator and a stimulation system.

[0038] Embodiment one

[0039] Referring to FIGS. 1-3, the lead wire electrically connected with the stimulator (hereinafter referred to as "lead wire") comprises an insulating body 1 and a connecting segment 13 inserted at least partially into the stimulator 3. The connecting segment 13 is arranged at one end of the insulating body 1. The connecting segment 13 comprises a conductive ring 11 mounted on the insulating body 1, and at least one sealing portion 2 mounted on the insulating body 1. The sealing portion 2 abuts against a sealing member 31 (see FIG. 5) in the stimulator 3, so that the connecting segment 13 inserted into the stimulator 3 is sealed. The lead wire further comprises a gas guide structure arranged on the connecting segment 13, and the gas guide structure is arranged to reduce the insertion force when the connecting segment 13 is inserted into the stimulator 3.

[0040] Exemplarily, the insulation body 1 can be in the form of a sleeve, which is internally provided with a conductive core wire for transmitting electrical signals, and the conductive core wire is electrically connected with the conductive ring 11. The head end of the connecting segment 13 is inserted into the stimulator 3, and the tail end of the connecting segment 13 is provided with at least one sealing part 2. Between the head end and the tail end of the connecting segment 13, a plurality of conductive rings 11 are distributed at intervals. A slot structure is provided on the surface or inside of the connecting segment 13 to form an air guiding structure, so as to discharge the gas in the stimulator 3 while the connecting segment 13 is inserted into the stimulator 3. After the connecting segment 13 is inserted into the designated position, the sealing part 2 can abut against the sealing member 31 on the stimulator 3, so as to smoothly form a seal.

[0041] By providing the air guiding structure, when the insulation body 1 and the connecting segment 13 are inserted into the stimulator 3, the space in the stimulator 3 will be gradually occupied and the gas will be compressed. As the insulation body 1 and the connecting segment 13 gradually extend into the inside of the stimulator 3, the air guiding structure will be in communication with the space in the stimulator 3, and then the compressed gas can be discharged along the air guiding structure, so as to reduce the possibility of increasing the air pressure in the stimulator 3. When the connecting segment 13 is inserted into the designated position, the sealing part 2 can abut against the sealing member 31 on the stimulator 3, so as to form a seal. In this way, when the wire is inserted into the stimulator 3, the air guiding structure can discharge the gas in the space of the stimulator 3, so as to reduce the possibility of continuously increasing the air pressure in the stimulator 3, avoid generating additional insertion and extraction resistance, reduce the operation difficulty of inserting or extracting the wire, and reduce the force applied when the wire is inserted or extracted, so as to reduce the possibility of damaging the sealing member 31 of the stimulator 3 or damaging the wire, effectively prolong the service life of the stimulator 3, and ensure the good sealing performance of the stimulator 3. At the same time, the wire can be quickly replaced or adjusted in position during the treatment, so as to avoid unnecessary pain or discomfort for the patient.

[0042] Optionally, the air guiding structure is provided on the outer surface of the connecting segment 13 or penetrates the insulation body 1.

[0043] Exemplarily, the air guiding structure can be provided only on the outer surface of the connecting segment 13, which can be in the form of a strip-shaped slot structure or a plurality of hole structures distributed at intervals and in communication with each other. The air guiding structure can also penetrate the insulation body 1, which can penetrate along the axial direction of the insulation body 1 or penetrate along the radial direction of the insulation body 1. The air guiding structure can be designed according to the actual air guiding requirement, which can only discharge the gas in the stimulator 3 when the connecting segment 13 is inserted into the stimulator 3.

[0044] Optionally, the air guiding structure includes a plurality of air guiding holes 12 provided on the connecting segment 13, the air guiding holes 12 are distributed at intervals along the axial direction of the connecting segment 13, and the air guiding holes 12 are in communication with each other.

[0045] A plurality of air guiding holes 12 are formed through the outer side wall of the connecting section 13 as the air guiding structure, and the plurality of air guiding holes 12 are in communication with each other, so that when the connecting section 13 is inserted into the stimulator 3, when the first air guiding hole 12 enters the stimulator 3, the gas in the stimulator 3 can flow to other air guiding holes 12 through the air guiding hole 12 and be discharged from the stimulator 3. The size, shape and number of the air guiding holes 12 can be designed according to the actual depth of the connecting section 13 to be inserted. In this embodiment, the air guiding holes 12 are circular, and the plurality of air guiding holes 12 are distributed at intervals.

[0046] Optionally, two sealing portions 2 are arranged at intervals, and a locking ring 21 is arranged between the two sealing portions 2.

[0047] For example, after the connecting section 13 is inserted into the designated position, the sealing portion 2 is arranged at the position corresponding to the sealing member 31 on the stimulator 3, and two sealing portions 2 are arranged at intervals, so that the sealing portion 2 close to the connecting section 13 can be deeply inserted into the stimulator 3, and the other sealing portion 2 is at least partially located in the stimulator 3. The locking ring 21 is arranged between the two sealing portions 2, and the locking ring 21 can be tightly contacted with the locking screw screwed into the stimulator 3, so as to lock the lead wire on the stimulator 3.

[0048] The stimulation system comprises the stimulator 3 and the lead wire electrically connected with the stimulator in any of the above embodiments. The stimulator 3 has a plug-in hole 32 with at least one sealing member 31 in the plug-in hole 32; the lead wire passes through the plug-in hole 32 and is at least partially inserted into the stimulator 3, and the sealing portion 2 of the lead wire is in contact with the sealing member 31.

[0049] In use, when the lead wire is frequently replaced or adjusted in position, the air pressure in the stimulator 3 can be discharged through the air guiding structure of the lead wire, without continuously increasing the air pressure, so as to avoid additional plugging resistance, so that the plugging difficulty of the lead wire is small, and the possibility of damage to the sealing member 31 or the lead wire is reduced. Meanwhile, the sealing member 31 is arranged at least one, and in this embodiment, the sealing member 31 is arranged at intervals, and cooperates with the two sealing portions 2 of the lead wire, so as to ensure that the sealing performance of the stimulator 3 is good. This is beneficial to prolong the service life of the stimulator 3, and the lead wire can also be quickly replaced or adjusted in position, so as to avoid unnecessary pain or discomfort for the patient.

[0050] Embodiment Two

[0051] On the basis of the first embodiment, the difference between this embodiment and the first embodiment is that the air guiding structure is different.

[0052] Referring to FIGS. 4 and 5, optionally, the air guiding structure comprises an air guiding channel 14 formed in the middle of the connecting section 13, and the air guiding channel 14 penetrates the insulating body 1 along the axial direction of the insulating body 1.

[0053] Exemplarily, both ends of the insulation body 1 are open, and the gas guiding channel 14 is arranged in the middle of the insulation body 1, so that when the insulation body 1 is inserted into the stimulator 3, the gas can be discharged along the gas guiding channel 14, and the wire is an extension wire.

[0054] Embodiment three

[0055] Based on the embodiment one, the difference between the embodiment one and the embodiment two is the gas guiding structure.

[0056] Referring to FIG. 6, optionally, the gas guiding structure includes the gas guiding channel 14 arranged in the inside of the connecting segment 13 and the gas exhaust hole 141 arranged in the side wall of the connecting segment 13, the gas exhaust hole 141 is arranged close to the sealing part 2 and communicates with the gas guiding channel 14, and the end of the connecting segment 13 away from the sealing part 2 is provided with the gas guiding hole 142 communicating with the gas guiding channel 14.

[0057] Exemplarily, the gas guiding channel 14 is only arranged in the connecting segment 13, and does not need to pass through the whole insulation body 1, that is, the gas guiding channel 14 can extend along the axial direction of the insulation body 1, but the end of the insulation body 1 away from the connecting segment 13 is closed, and only one gas guiding hole 142 is arranged at the head end of the connecting segment 13, so that the gas in the stimulator 3 flows into the gas guiding channel 14, and the gas exhaust hole 141 is arranged on the side wall of the connecting segment 13, the gas exhaust hole 141 passes through the side wall of the connecting segment 13, so that the gas exhaust hole 141 communicates with the gas guiding channel 14, so that the gas in the gas guiding channel 14 can be discharged through the gas exhaust hole 141. The gas exhaust hole 141 can be arranged close to the sealing part 2, so that the gas exhaust hole 141 is away from the gas guiding hole 142. The gas exhaust hole 141 can be arranged on the insulation body 1, and the wire is a stimulation wire.

[0058] Optionally, the gas exhaust holes 141 are distributed in multiple.

[0059] Exemplarily, the gas exhaust holes 141 can be distributed in multiple around the circumference of the connecting segment 13, or can be distributed in multiple along the radial direction of the connecting segment 13, so as to increase the efficiency of discharging the gas. The number and distribution mode of the gas exhaust holes 141 can be designed according to the actual pressure change in the plugging process.

[0060] Embodiment four

[0061] Based on the embodiment one, the difference between the embodiment one and the embodiment two is the gas guiding structure.

[0062] Referring to FIG. 7 and FIG. 8, optionally, the gas guiding structure includes the gas guiding groove 15 arranged on the outside wall of the connecting segment 13, and the gas guiding groove 15 extends along the axial direction of the insulation body 1.

[0063] Exemplarily, the outer side wall of the connecting section 13 is recessed to form the gas guide groove 15, which can be in a complete strip shape or can be divided into several groove-shaped structures. When the insulating body 1 is inserted into the stimulator 3, the gas in the stimulator 3 can be discharged out of the stimulator 3 along the gas guide groove 15 when the gas guide groove 15 enters the interior of the stimulator 3 at the leading end. The gas guide groove 15 extends to the sealing portion 2 to ensure that the gas guide groove 15 can guide the gas in a large insertion and extraction range during the entire insertion and extraction process of the connecting section 13, and to reduce the increase in the gas pressure in the stimulator 3 as much as possible.

[0064] Optionally, the gas guide grooves 15 are distributed along the axial direction of the connecting section 13.

[0065] Exemplarily, a plurality of conductive rings 11 are sleeved on the outer side wall of the connecting section 13 as contacts, and the plurality of conductive rings 11 are distributed along the axial direction of the insulating body 1. In order to ensure the integrity of the conductive rings 11, the gas guide grooves 15 can not be formed on the conductive rings 11, but only on the outer side wall of the connecting section 13 to form a plurality of gas guide grooves 15 on the outer side wall of the connecting section 13. The plurality of gas guide grooves 15 can be arranged in a row along the axial direction of the insulating body 1 or can be distributed along the circumferential direction of the insulating body 1.

[0066] When the connecting section 13 is inserted into the stimulator 3, the gas in the stimulator 3 can be discharged out of the stimulator 3 through the gas guide groove 15 whenever one gas guide groove 15 is in communication with the space in the stimulator 3, thereby reducing the possibility of continuous increase in the gas pressure in the stimulator 3 and ensuring that the connecting section 13 can be smoothly inserted into the stimulator 3.

[0067] Optionally, the gas guide grooves 15 include first gas guide grooves 15a and second gas guide grooves 15b. The first gas guide grooves 15a are formed on the outer side wall of the insulating body 1 and are distributed in a spaced manner. The second gas guide grooves 15b are formed on the outer side wall of the conductive ring 11 and are axially aligned with the first gas guide grooves 15a. The first gas guide grooves 15a and the second gas guide grooves 15b are distributed in a spaced manner.

[0068] Exemplarily, the second gas guide grooves 15b are formed on the conductive ring 11 in a corresponding manner, and the first gas guide grooves 15a and the second gas guide grooves 15b are distributed in a spaced manner. The plurality of second gas guide grooves 15b and the plurality of first gas guide grooves 15a can be sequentially and correspondingly arranged in a head-to-tail manner to be axially aligned, so that the gas in the stimulator 3 can be smoothly discharged out of the stimulator 3 along the gas guide groove 15.

Claims

1. A lead electrically connected to a stimulator, comprising: an insulating body (1); a connecting section (13) provided at one end of the insulating body (1), the connecting section (13) being at least partially inserted into the stimulator (3), the connecting section (13) comprising an electrically conductive ring (11) mounted on the insulating body (1), and at least one sealing portion (2) mounted on the insulating body (1), the sealing portion (2) abutting against a sealing member (31) in the stimulator (3) to seal the connecting section (13) inserted into the stimulator (3); a gas guiding structure provided on the connecting section (13), the gas guiding structure being configured to reduce the insertion force of the connecting section (13) inserted into the stimulator (3).

2. The lead electrically coupled to a stimulator of claim 1, wherein, The gas guiding structure is provided on the outer surface of the connecting section (13) or through the insulating body (1).

3. The lead electrically coupled to a stimulator of claim 2, wherein, The gas guiding structure comprises a plurality of gas guiding holes (12) provided in the connecting section (13), the plurality of gas guiding holes (12) being spaced apart along the axial direction of the connecting section (13), and the plurality of gas guiding holes (12) being in communication with each other.

4. The lead electrically coupled to a stimulator of claim 2, wherein, The gas guiding structure comprises a gas guiding channel (14) provided in the connecting section (13), the gas guiding channel (14) extending through the insulating body (1) along the axial direction of the insulating body (1).

5. The lead electrically coupled to a stimulator of claim 2, wherein, The gas guiding structure comprises a gas guiding channel (14) provided in the connecting section (13) and a gas exhaust hole (141) provided in the side wall of the connecting section (13), the gas exhaust hole (141) being provided close to the sealing portion (2) and in communication with the gas guiding channel (14), and the end of the connecting section (13) away from the sealing portion (2) being provided with a gas guiding opening (142) in communication with the gas guiding channel (14).

6. The lead electrically coupled to a stimulator of claim 5, wherein, The gas exhaust holes (141) are spaced apart.

7. The lead electrically coupled to a stimulator of claim 1, wherein, The gas guiding structure comprises a gas guiding groove (15) provided in the outer side wall of the connecting section (13), the gas guiding groove (15) extending along the axial direction of the insulating body (1).

8. The lead electrically coupled to a stimulator of claim 7, wherein, The gas guiding grooves (15) are spaced apart along the axial direction of the connecting section (13).

9. The lead electrically coupled to a stimulator of claim 7, wherein, The gas guiding grooves (15) comprise first gas guiding grooves (15a) and second gas guiding grooves (15b), the first gas guiding grooves (15a) being provided in the outer side wall of the insulating body (1) and spaced apart, and the second gas guiding grooves (15b) being provided in the outer side wall of the electrically conductive ring (11) and axially aligned with the first gas guiding grooves (15a), the first gas guiding grooves (15a) and the second gas guiding grooves (15b) being spaced apart.

10. The lead electrically coupled to a stimulator of any one of claims 1-9, wherein, The sealing portions (2) are spaced apart by two, and a locking ring (21) is provided between the two sealing portions (2).

11. A stimulation system, comprising: a stimulator (3) having an insertion hole (32) with at least one sealing member (31) in the insertion hole (32); and a lead electrically connected to the stimulator, as claimed in any of claims 1 to 9, passing through the insertion hole (32) and at least partially inserted into the stimulator (3), the sealing portion (2) of the lead electrically connected to the stimulator being in abutment with the seal (31).

12. The stimulation system of claim 11, wherein, The seal (31) is arranged at a distance from the other.

Images