阅读说明：本技术 颅内深部电极 (Intracranical deep electrode ) 是由 管西军 莫晓龙 于 2019-07-17 设计创作，主要内容包括：本发明涉及医疗器械技术领域,特别是涉及一种颅内深部电极,包括柔性导线、电极触点、插头及屏蔽套管,所述柔性导线的一端与所述电极触点连接,另一端与所述插头连接,所述屏蔽套管能够套设于所述柔性导线,且所述柔性导线位于所述屏蔽套管外的部分的长度与所述屏蔽套管的长度之和能够改变。当屏蔽套管套设于柔性导线时,柔性导线位于磁共振设备的射频磁场内的长度等效为屏蔽套管的长度与位于屏蔽套管外的柔性导线的长度之和。这样,用户能够根据实际需要改变屏蔽套管的长度及/或柔性导线位于屏蔽套管外的长度,以使得屏蔽套管的长度与位于屏蔽套管外的柔性导线的长度之和偏离柔性导线的共振长度,从而降低柔性导线端部发热的风险。(The present invention relates to the field of medical instrument technology, more particularly to a kind of Intracranical deep electrode, including flexible wire, electrode contacts, plug and shielded tube, one end of the flexible wire is connect with the electrode contacts, the other end is connect with the plug, the shielded tube can be sheathed on the flexible wire, and the flexible wire is located at the sum of the length of the part outside the shielded tube and the length of the shielded tube and can change.When shielded tube is sheathed on flexible wire, flexible wire is located at the length in the RF magnetic field of magnetic resonance equipment and is equivalent to the length of shielded tube and the sum of the length of flexible wire being located at outside shielded tube.In this way, user can change the length of shielded tube according to actual needs and/or flexible wire is located at length outside shielded tube, so that the length of shielded tube deviates the resonant length of flexible wire with the sum of the length of flexible wire being located at outside shielded tube, to reduce the risk of flexible wire end-heating.)

1. a kind of Intracranical deep electrode, which is characterized in that described soft including flexible wire, electrode contacts, plug and shielded tube One end of property conducting wire is connect with the electrode contacts, and the other end is connect with the plug, and the shielded tube can be sheathed on institute State flexible wire, and the flexible wire be located at the part outside the shielded tube length and the shielded tube length it With can change.

2. Intracranical deep electrode as shown in claim 1, which is characterized in that the length of the shielded tube is less than the flexibility The length of conducting wire, and the flexible wire can be folded in the shielded tube.

3. the Intracranical deep electrode as shown in claims 1 or 2, which is characterized in that the shielded tube can be relatively described soft Property conducting wire along the flexible wire axial movement, to change the length that the shielded tube is arranged with the part of the flexible wire Degree.

4. Intracranical deep electrode as shown in claim 1, which is characterized in that the plug include shell and be located at the shell Interior stitch, the flexible wire, the stitch and the electrode contacts are equipped with multiple, and each flexible wire connection is every One stitch and each electrode contacts.

5. Intracranical deep electrode as shown in claim 1, which is characterized in that the material of the flexible wire and the electrode contacts Material is non-magnetic material.

6. Intracranical deep electrode as shown in claim 1, which is characterized in that the Intracranical deep electrode further includes non-elastic cover Pipe, the non-resilient casing can be sheathed on the flexible wire, and one end of the non-resilient casing can be with the plug Connection, the other end can be connect with the fixture nut for being fixed on head, and the flexible wire is located in the non-resilient casing Part length be greater than the non-resilient casing length.

7. the Intracranical deep electrode as shown in claim 6, which is characterized in that the material of the non-resilient casing is transparent material Material.

8. the Intracranical deep electrode as shown in claim 6, which is characterized in that one end of the non-resilient casing is sheathed on described Plug, the other end are sheathed on the fixture nut.

9. the Intracranical deep electrode as shown in claim 6, which is characterized in that the material of the non-resilient casing is non magnetic material Material.

10. Intracranical deep electrode as shown in claim 1, which is characterized in that the Intracranical deep electrode further includes interconnecting piece, One end of the interconnecting piece is connect with the electrode contacts, and the other end is connect with the plug, and the connecting portion is in described Length between electrode contacts and the plug is less than the flexible wire between the electrode contacts and the plug Length.

11. Intracranical deep electrode shown in claim 10, which is characterized in that the material of the interconnecting piece is tensile materials.

12. Intracranical deep electrode as shown in claim 1, which is characterized in that the Intracranical deep electrode further includes being sheathed on One end of the flexible insulation pipe of the flexible wire, the flexible insulation pipe is connect with the electrode contacts, the other end with it is described Plug connection, the Intracranical deep electrode further includes rigid supporting rod, and the rigid supporting rod is arranged in the flexible insulation pipe, And the rigid supporting rod is located at one end that the flexible insulation pipe is connected with the electrode contacts.

13. the Intracranical deep electrode as shown in claim 12, which is characterized in that the material of the rigid supporting rod is shape note Recall material.

14. the Intracranical deep electrode as shown in claim 12, which is characterized in that the Intracranical deep electrode further includes end electricity Pole, the tip electrodes are connect with the rigid supporting rod, and are electrically connected by the flexible wire with the plug.

15. Intracranical deep electrode as shown in claim 1, which is characterized in that the electrode contacts are cyclic structure.

Technical field

The present invention relates to the field of medical instrument technology, more particularly to a kind of Intracranical deep electrode.

Background technique

Before intractable epilepsy patient performs the operation, need to carry out encephalic eeg monitoring by Intracranical deep electrode, with Determine the position of Epileptic focus.Intracranical deep electrode generally comprises electrode contacts and plug, and electrode contacts are electrically connected with plug, encephalic One end that depth electrode is equipped with electrode contacts can then be connected by the encephalic of operation implantation patient, plug with electroencephalograph It connects, so that the collected electricity physiological signal of electrode contacts can be transmitted in electroencephalograph.

Electrode contacts are connect with plug by flexible wire, and flexible wire is generally slim-lined construction, in magnetic resonance imaging Can absorb the RF magnetic field energy of the generation of magnetic resonance equipment in the process, and generate energy deposition in end, so as to cause with it is soft Property conducting wire connection electrode contacts fever.In this way may injured patient brain tissue, or even jeopardize the life security of patient.And And the length of flexible wire, closer to resonant length, the calorific value of the end of flexible wire is bigger.However, flexible wire is used for Resonant length when different magnetic resonance equipments is different, so that flexible wire is difficult to take into account different magnetic resonance equipments.

Summary of the invention

The purpose of the present invention is to provide a kind of Intracranical deep electrodes, it is intended to solve the electrode contacts of Intracranical deep electrode by Energy stacking is led to the problem of in flexible wire and is generated heat.

To solve the above problems, the present invention provides a kind of Intracranical deep electrode, including flexible wire, electrode contacts, plug And shielded tube, one end of the flexible wire are connect with the electrode contacts, the other end is connect with the plug, the shielding Casing can be sheathed on the flexible wire, and the flexible wire be located at the length of the part outside the shielded tube with it is described The sum of length of shielded tube can change.

Optionally, the length of the shielded tube is less than the length of the flexible wire, and the flexible wire can be rolled over It is laminated in the shielded tube.

Optionally, the shielded tube can the relatively described flexible wire along the flexible wire axial movement, to change Become the length that the shielded tube is arranged with the part of the flexible wire.

Optionally, the plug includes shell and the stitch being located in the shell, the flexible wire, the stitch and The electrode contacts are equipped with multiple, each flexible wire each stitch of connection and each electrode contacts.

Optionally, the material of the flexible wire and the electrode contacts is non-magnetic material.

Optionally, the Intracranical deep electrode further includes non-resilient casing, and the non-resilient casing can be sheathed on described Flexible wire, and one end of the non-resilient casing can be connect with the plug, the other end can be fixed on consolidating for head Determine nut connection, and the flexible wire is located at the length of the part in the non-resilient casing greater than the non-resilient casing Length.

Optionally, the material of the non-resilient casing is transparent material.

Optionally, one end of the non-resilient casing is sheathed on the plug, and the other end is sheathed on the fixture nut.

Optionally, the material of the non-resilient casing is non-magnetic material.

Optionally, the Intracranical deep electrode further includes interconnecting piece, and one end of the interconnecting piece and the electrode contacts connect It connects, the other end is connect with the plug, and length of the connecting portion between the electrode contacts and the plug is less than Length of the flexible wire between the electrode contacts and the plug.

Optionally, the material of the interconnecting piece is tensile materials.

Optionally, the Intracranical deep electrode further includes the flexible insulation pipe for being sheathed on the flexible wire, the flexibility One end of insulation tube is connect with the electrode contacts, and the other end is connect with the plug, and the Intracranical deep electrode further includes rigid Property support rod, the rigid supporting rod is arranged in the flexible insulation pipe, and the rigid supporting rod is located at the flexible insulation Pipe is connected with one end of the electrode contacts.

Optionally, the material of the rigid supporting rod is shape-memory material.

Optionally, the Intracranical deep electrode further includes tip electrodes, and the tip electrodes and the rigid supporting rod connect It connects, and is electrically connected by the flexible wire with the plug.

Optionally, the electrode contacts are cyclic structure.

Implement the embodiment of the present invention, will have the following beneficial effects:

Above-mentioned Intracranical deep electrode, by the way that shielded tube is arranged, shielded tube can shield penetrating for magnetic resonance equipment generation Frequency electromagnetic waves.When shielded tube is sheathed on flexible wire, flexible wire is located at the length in the RF magnetic field of magnetic resonance equipment It is equivalent to the length of shielded tube and the sum of the length of flexible wire being located at outside shielded tube.In this way, user can be according to reality Border needs to change the length of shielded tube and/or flexible wire is located at length outside shielded tube, so that the length of shielded tube Degree deviates the resonant length of flexible wire with the sum of the length of flexible wire being located at outside shielded tube, to reduce flexible wire The risk of end-heating.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Wherein:

Fig. 1 is the schematic diagram of the part-structure of the Intracranical deep electrode of one embodiment of the invention；

Fig. 2 is the schematic diagram that Intracranical deep electrode is implanted into the original state of flexible wire when in patient's head in Fig. 1；

Fig. 3 is the relational graph of the degree of heat of the flexible wire of Intracranical deep electrode and flexible wire length in Fig. 2；

Fig. 4 is the schematic diagram that Intracranical deep electrode adjusts after flexible wire length in Fig. 2；

Fig. 5 is the relational graph of the degree of heat of the flexible wire of Intracranical deep electrode and flexible wire length in Fig. 4；

Fig. 6 is that the Intracranical deep electrode of another length is implanted into the signal of the original state of flexible wire when in patient's head Figure；

Fig. 7 is the relational graph of the degree of heat of the flexible wire of Intracranical deep electrode and flexible wire length in Fig. 6；

Fig. 8 is another schematic diagram that Intracranical deep electrode adjusts after flexible wire length in Fig. 6；

Fig. 9 is the relational graph of the degree of heat of the flexible wire of Intracranical deep electrode and flexible wire length in Fig. 8；

Figure 10 is that Intracranical deep electrode is implanted into the schematic diagram in patient's head in Fig. 1；

Figure 11 is the schematic diagram of the part-structure of Intracranical deep electrode in Fig. 1.

Appended drawing reference is as follows in specification:

100, Intracranical deep electrode；

10, flexible wire；

20, electrode contacts；

30, plug；

40, shielded tube；

50, rigid supporting rod；

60, tip electrodes；

70, non-resilient casing；

80, flexible insulation pipe；

200, fixture nut.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

One embodiment of the invention provides a kind of Intracranical deep electrode 100, raw for detecting the electricity of deep-brain of patient Reason activity.As shown in Figure 1, Intracranical deep electrode 100 includes flexible wire 10, electrode contacts 20 and plug 30.Flexible wire 10 One end connect with electrode contacts 20, the other end is connect with plug 30.

In the present embodiment, plug 30 includes shell and the stitch in shell, flexible wire 10, stitch and electrode touching Point 20 is equipped with multiple, and each flexible wire 10 connects each stitch and each electrode contacts 20.In plug 30 between each stitch Independently of each other, integrated level is high, convenient for connecting with electroencephalograph.

As shown in Fig. 2, one end that Intracranical deep electrode 100 is equipped with electrode contacts 20 can be implanted into the head of patient, with Electrode contacts 20 are enabled to acquire the electricity physiological signal of the deep-brain of patient.Since flexible wire 10 is slim-lined construction, Flexible wire 10 can absorb the RF magnetic field energy of magnetic resonance equipment generation, and generate energy in the end of flexible wire 10 and sink Product is generated heat so as to cause the electrode contacts 20 connecting with flexible wire 10.As shown in figure 3, the flexibility of Intracranical deep electrode 100 is led The degree of heat of line 10 changes with the length of flexible wire 10 and is changed, and has a peak value, flexible wire corresponding with the peak value 10 length is the resonant length of flexible wire 10.For purposes of illustration only, the resonant length of flexible wire 10 is named as L.By For Fig. 3 it is found that the length deviation resonance length L of flexible wire 10 is remoter, the degree of heat of flexible wire 10 is lower.

As shown in figure 4, in order to reduce the degree of heat of flexible wire 10, the Intracranical deep electrode 100 of the present embodiment is also wrapped Shielded tube 40 is included, shielded tube 40 can be sheathed on flexible wire 10, to shield the electromagnetic wave in magnetic resonance radio frequency magnetic field.Pass through Select material appropriate, it is also possible that shielded tube 40 can effectively shield magnetic resonance radio frequency magnetic field frequency range (30MHz~ Electromagnetic wave 300MHz).Moreover, the length of shielded tube 40 is less than the length of flexible wire 10, the part knot of flexible wire 10 Structure is folded in shielded tube 40.By the way that shielded tube 40 is arranged, shielded tube 40 can shield penetrating for magnetic resonance equipment generation Frequency electromagnetic waves, so that the length that flexible wire 10 is located in the RF magnetic field of magnetic resonance equipment is equivalent to the length of shielded tube 40 With the sum of the length for the flexible wire 10 being located at outside shielded tube 40.For ease of description, the actual (tube) length of flexible wire 10 is dragged out a miserable existence The equivalent length of entitled L1, flexible wire 10 are named as L2.At this point, as shown in figure 5, the equivalent length L2 of flexible wire 10 is less than The physical length L1 of flexible wire 10, and L2 deviates the resonant length L of flexible wire 10 with respect to L1.In this way, flexible wire 10 The degree of heat of end reduces, and can be improved the security performance of Intracranical deep electrode 100.Shielded tube 40 is sheathed in order to prevent Mobile relative to flexible wire 10 when flexible wire 10, shielded tube 40 can also be tightened by band or clip etc. in flexible wire On 10.It is of course also possible to prevent shielded tube 40 from can arbitrarily move by the internal diameter for controlling shielded tube 40.

It is to be appreciated that shielded tube 40 can use the forms such as woven network tube or coat of metal hose, facilitating will be shielded Casing 40 is sheathed on flexible wire 10, and flexible wire 10 is arranged with after shielded tube 40 still with flexibility, is easy to use.

As shown in FIG. 6 and 7, in another embodiment, the physical length of flexible wire 10 is greater than being total to for flexible wire 10 Shake length L.At this point, shielded tube 40 is sheathed on flexible wire 10, so that soft in order to reduce the degree of heat of flexible wire 10 Property conducting wire 10 equivalent length be greater than flexible wire 10 physical length L.For ease of description, by the physical length of flexible wire 10 It is named as L3, the equivalent length of flexible wire 10 is named as L4.As shown in figure 8, shielded tube 40 being capable of relative flexibility conducting wire 10 Along the axial movement of flexible wire 10, to change the length that shielded tube 40 is arranged with the part of flexible wire 10.At this point, as schemed Shown in 9, the equivalent length L4 of flexible wire 10 is greater than the physical length L3 of flexible wire 10, and L4 deviates flexible wire with respect to L3 10 resonant length L.In this way, the degree of heat of the end of flexible wire 10 reduces, the peace of Intracranical deep electrode 100 can be improved Full performance.

It is to be appreciated that the resonant length L of flexible wire 10 and the relating to parameters of magnetic resonance equipment, identical flexible wire The 10 resonant length L in different magnetic resonance equipments is different, and user can change flexible wire 10 according to actual needs and be located at The length of part in shielded tube 40, so that the physical length of the equivalent length relative flexibility conducting wire 10 of flexible wire 10 Deviate the resonant length L of flexible wire 10, to reduce the risk of 10 end-heating of flexible wire.Moreover, user can also basis Actual needs selects the shielded tube 40 of different length, with change the length of shielded tube 40 with it is soft outside shielded tube 40 The sum of the length of property conducting wire 10.

It is noted that in the present embodiment, the material of flexible wire 10, electrode contacts 20 and stitch is non magnetic Material, such as nonmagnetic material, conductive polymer material, carbon nanotube or grapheme material etc..Using non-magnetic material The magnetic field environment that can be avoided flexible wire 10, electrode contacts 20 and stitch interference magnetic resonance equipment, so that magnetic resonance be avoided to set It is standby to generate artifact.

In addition, in the present embodiment, as shown in Figure 10, Intracranical deep electrode 100 further includes non-resilient casing 70, non-resilient Casing 70 can be sheathed on flexible wire 10, and one end of non-resilient casing 70 can be connect with plug 30, and the other end can be with The fixture nut 200 for being fixed on head connects.In this way, when Intracranical deep electrode 100 is by drag force, 200 energy of fixture nut Hinder non-resilient casing 70 mobile, enough so as to prevent Intracranical deep electrode 100 to be pulled out.

Further, the length of the flexible wire 10 in non-resilient casing 70 is greater than the length of non-resilient casing 70, encephalic When depth electrode 100 is by drag force, drag force is born by non-resilient casing 70, and the flexible wire 10 in non-resilient casing 70 begins Relaxed state is kept eventually, is not subject to drag force and is damaged.

Further, the material of non-resilient casing 70 is transparent material, facilitates user to observe soft in non-resilient casing 70 The state of property conducting wire 10.Moreover, non-resilient casing 70 can also use non-magnetic material, it is being transmitted across to avoid electricity physiological signal By the interference of radio frequency electromagnetic in journey.

Further, one end of non-resilient casing 70 is sheathed on plug 30, and the other end is sheathed on fixture nut 200, moreover, Non-resilient casing 70 can be by clip banding on plug 30 and fixture nut 200.In this way, non-resilient casing 70 is only having It needs Shi Caiyu plug 30 and fixture nut 200 to connect, and can be replaced when the damage of non-resilient casing 70.

It is noted that the Intracranical deep electrode 100 of the present embodiment further includes interconnecting piece (not shown), interconnecting piece One end connect with electrode contacts 20, the other end is connect with plug 30, and connecting portion is between electrode contacts 20 and plug 30 Length be less than length of the flexible wire 10 between electrode contacts 20 and plug 30.When Intracranical deep electrode 100 is drawn When drag, it is located at electrode contacts 20 since length of the connecting portion between electrode contacts 20 and plug 30 is less than flexible wire 10 With the length between plug 30, which is born by interconnecting piece, and the tensile strength of Intracranical deep electrode 100 can be enhanced, keep away Exempt from Intracranical deep electrode 100 surprisingly to be broken in the detection process.In the present embodiment, the material of interconnecting piece is tensile materials, Such as glass fibre, materials are convenient, and will not influence the RF magnetic field of magnetic resonance equipment.Certainly, in other embodiments, even Socket part can also use the biggish material of other tensile strength.

In addition, Intracranical deep electrode 100 further includes the flexible insulation pipe 80 for being sheathed on flexible wire 10, flexible insulation pipe 80 One end connect with electrode contacts 20, the other end and cage connection.It is to be appreciated that flexible insulation pipe 80 leads more flexibilities Line 10 is integrated into pencil, so that the arrangement of flexible wire 10 is more regular.Flexible wire 10 can also be avoided exposed, improve cranium The security performance and service life of interior depth electrode 100, and make data transmission stability preferable.Moreover, the electricity of the present embodiment Pole contact 20 is cyclic structure, and electrode contacts 20 are sheathed on flexible insulation pipe 80, can increase the depth of electrode contacts 20 Yu patient The contact area of portion's brain tissue.

As shown in figure 11, Intracranical deep electrode 100 further includes the rigid supporting rod 50 with certain rigidity, rigid supporting rod 50 are arranged in flexible insulation pipe 80, so that flexible insulation pipe 80 is of a straight line type, are connected with electrode touching convenient for Intracranical deep electrode 100 One end of point 20 is inserted into the head of patient.Moreover, the material of the rigid supporting rod 50 of the present embodiment is shape-memory material, Such as shape memory alloy material or shape memory ceramics material.In this way, rigid supporting rod 50 can be extensive after being bent by external force Multiple original shape causes Intracranical deep electrode 100 whole after avoiding Intracranical deep electrode 100 from bending due to rigid supporting rod 50 It scraps.

Further, Intracranical deep electrode 100 further includes tip electrodes 60, and tip electrodes 60 and rigid supporting rod 50 connect It connects, and is electrically connected by flexible wire 10 with the stitch of plug 30, tip electrodes 60 can acquire the deep-brain of patient Electricity physiological signal.Moreover, may be provided for the electromagnetic induction element of the position of mark tip electrodes 60 in tip electrodes 60, The location information of tip electrodes 60 is fed back to external equipment.

The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.