CN105107091A - Sealing plug and implantable medical device using same - Google Patents
Sealing plug and implantable medical device using same Download PDFInfo
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- CN105107091A CN105107091A CN201510517135.XA CN201510517135A CN105107091A CN 105107091 A CN105107091 A CN 105107091A CN 201510517135 A CN201510517135 A CN 201510517135A CN 105107091 A CN105107091 A CN 105107091A
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Abstract
The invention relates to a sealing plug. The sealing plug which is applied to an implantable medical device comprises a plug body which is made of an insulating elastic material. A groove is arranged at the top of the plug body. A hole is arranged in the bottom of the plug body. A slit which communicates the groove and the hole is arranged in the plug body. Through the slit, a screwdriver passes through the plug body. A screw is partially accommodated in the hole. The hole comprises a first hole and a second hole, wherein the first hole and the second hole are orderly arranged from the inside out and are communicated. The diameter of the first hole is smaller than the diameter of the second hole. The invention further relates to the implantable medical device using the sealing plug.
Description
Technical field
The invention belongs to mini-medical instrument field, particularly the implantable medical device of a kind of sealing-plug and employing sealing plug.
Background technology
At present, implantable medical device, is widely used in disease such as treatment nervous system, cardiac system etc.Implantable medical device comprises lesions located in deep brain, implanted cortex stimulates, implanted spinal cord stimulation trial, implanted Sacral nerve electrical stimulation, the electricity irritation of implanted vagus nerve, implantable cardiac electric stimulation (being commonly called as cardiac pacemaker), implanted drug infusion system etc.
After these implantable medical device implant into body, need to safely and steadily run, this just needs the sealing ensureing each connecting portion, prevents body fluid from infiltrating and impacts circuit transmission.When implantable medical device uses, usually first one end of stimulating electrode or extension lead is inserted the connecting portion of pulse generator, then adopt holding screw by the stimulating electrode of this insertion connecting portion or extension lead locking.Therefore, ensure that the sealing of link is very crucial.Existing way places sealing-plug above screw, during locking screwdriver through sealing-plug to screw and rotary screw locking, then screwdriver extract and sealing-plug close.
Publication number is that the Chinese patent application of CN103893911A discloses a kind of sealing-plug.But sealing plug bottom groove is suitable with tip of screw size, makes tip of screw withstand on the bottom surface of sealing plug bottom groove completely during use.Therefore, when screwdriver inserts from otch, a larger squeezing action power can be formed to part sealing-plug cock body between screwdriver and tip of screw, thus cause this part sealing-plug cock body to be extruded damage, be difficult to resile.
Summary of the invention
In view of this, necessary providing during a kind of use can not cause cock body be extruded the sealing-plug of damage and adopt the implantable medical device of sealing plug.
A kind of sealing-plug, it is for implantable medical device and comprise: a cock body adopting insulating elastic material to prepare, the top of described cock body has a groove, and the bottom of described cock body has a hole, and described cock body inside has a gap be communicated with hole by this groove; Described gap is used for making a screwdriver through this cock body, and described hole is used for partial receipt one screw; Wherein, described hole comprises one and sets gradually from inside to outside and the first hole be interconnected and the second hole, and the diameter of described first hole is less than the diameter in described second hole.
Further, when the space of described first hole formation can hold the insertion of this screwdriver, the deflection that the cock body near described gap is downward.
Further, the aperture of described first hole is greater than the diameter of described screwdriver knife bar and is less than the internal diameter of described screw; The aperture of described second hole is greater than the external diameter of described screw.
Further, described hole also comprise one be arranged at be communicated with outside described second hole and with this second hole the 3rd hole, the aperture of described 3rd hole is less than the external diameter of described screw and is more than or equal to the internal diameter of described screw.
Further, described groove has two concave curvatures, and the length direction of described gap through described bottom portion of groove center and along described groove extends, and described gap at least extends to another relative side from a side of described groove.
Further, described sealing-plug is Split type structure, and described cock body comprises the sleeve that a base, is arranged at the core on this base and is sheathed on this core.
Further, described base and described core are round table-like; The height of described base is less than the height of described core and diameter is greater than the diameter of described core; Described base and described core are coaxially arranged and one-body molded; Described sleeve is a hollow circuit cylinder; The interior diameter through being equal to or less than described core of described sleeve; The external diameter of described sleeve equals the diameter of described base.
Further, described insulating elastic material is silicone rubber.
A kind of sealing-plug, it is for implantable medical device and comprise: a cock body, and described cock body has a top and a bottom relative with this top, described cock body inside have one to extend to from the top of described cock body bottom gap; Described gap can make screwdriver pass described cock body and restore to the original state after screwdriver is extracted; The bottom of described cock body has a hole, and wherein, described hole comprises one and sets gradually from inside to outside and the first hole be interconnected and the second hole, and the diameter of described first hole is less than the diameter in described second hole.
A kind of implantable medical device, it comprises: adapter, electrode cable, screw and sealing-plug; Wherein, described sealing-plug is any one in above-mentioned sealing-plug.
Compared with prior art, the hole of sealing-plug of the present invention comprises the first hole set gradually from inside to outside and second hole, and the diameter of described first hole is less than the diameter in described second hole, therefore.When can prevent screwdriver from inserting, the cock body of the portion deforms near described gap to be clipped in the middle of driver bit and screw and and to cause the damage of the cock body of this distortion.
Accompanying drawing explanation
The structural representation of the implanted lesions located in deep brain device that Fig. 1 provides for the embodiment of the present invention.
The structural representation of the coupling assembling of the pulse generator of the implanted lesions located in deep brain device that Fig. 2 provides for the embodiment of the present invention.
The structural representation of the header connector of the pulse generator of the implanted lesions located in deep brain device that Fig. 3 provides for the embodiment of the present invention.
The top structure schematic diagram of the sealing-plug that Fig. 4 provides for one embodiment of the invention.
The polycrystalline substance schematic diagram of the sealing-plug that Fig. 5 provides for one embodiment of the invention.
Fig. 6 is the profile of the sealing-plug VI-VI along the line of Fig. 4-5.
Structural representation before the sealing-plug assembling that Fig. 7 provides for another embodiment of the present invention.
Structural representation after the sealing-plug assembling that Fig. 8 provides for another embodiment of the present invention.
Fig. 9 is the schematic diagram of sealing-plug practical function provided by the invention.
Main element symbol description
Implanted lesions located in deep brain device | 10 |
Pulse generator | 11 |
Coupling assembling | 110 |
Adapter | 111 |
Screw | 112 |
Interior hexagonal pit | 1120 |
Sealing-plug | 113 |
Cock body | 1130 |
Base | 1130a |
Core | 1130b |
Sleeve | 1130c |
Groove | 1131 |
Gap | 1132 |
Hole | 1133 |
First hole | 1133a |
Second hole | 1133b |
3rd hole | 1133c |
Fluid sealant | 114 |
Plug wire hole | 115 |
Fixing hole | 116 |
First perforate | 1161 |
Second perforate | 1162 |
3rd perforate | 1163 |
Contiguous block | 117 |
Stimulating electrode | 12 |
Extension lead | 13 |
Vitro program controlled instrument | 14 |
Electrode cable | 15 |
Screwdriver | 20 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the specific embodiments, to the implantable medical device of sealing-plug provided by the invention and employing sealing plug.
Be appreciated that implantable medical device provided by the invention can be cardiac pacemaker, defibrillator, lesions located in deep brain device, spinal stimulator, vagus nerve stimulator, the intestines and stomach stimulator, muscle stimulator, peripheral nerve stimulation device or other similar stimulators.The embodiment of the present invention is only described for implanted lesions located in deep brain device.
Refer to Fig. 1, the embodiment of the present invention provides a kind of implanted lesions located in deep brain device 10, it comprises: one implants subcutaneous pulse generator 11, the stimulating electrode 12 of the one dark brain position of implantation, one extension lead 13 connecting this stimulating electrode 12 and pulse generator 11, and one for the vitro program controlled instrument 14 of this pulse generator 11 program control.
Described pulse generator 11 produces specific electric stimulation pulse signal, and carries out stimulation regulation and control by described extension lead 13 and stimulating electrode 12 conducting to stimulation location.Described vitro program controlled instrument 14 can with the wireless connections of described pulse generator 11, and change its electric pulse stimulation parameter.
One end of described stimulating electrode 12 has multiple contact, and after stimulating electrode 12 is implanted target position, has at least a contact to contact closely with stimulation target spot, so that suitable electricity irritation is conducted to target spot, treat the disease of neural class.Be appreciated that described stimulating electrode 12 contact can for one or more, corresponding position is stimulated, to ensure effect of stimulation.Be appreciated that the number of described stimulating electrode 12 is not limited to one, can select as required.The other end of described stimulating electrode 12 has the connecting ring that multiple and above-mentioned multiple contacts one_to_one corresponding is arranged.Described connecting ring is used for multiple contact to be electrically connected with the internal circuit of described pulse generator 11 respectively.In one embodiment, described stimulating electrode 12 has four contacts and four connecting rings.
Be appreciated that described extension lead 13 is a selectable unit, described stimulating electrode 12 can be directly connected on this pulse generator 11.Only have when the distance after described stimulating electrode 12 implants with this pulse generator 11 is larger, just need to be connected by extension lead 13.The two ends of described extension lead 13 respectively with there is multiple connecting ring.The connecting ring of described extension lead 13 is respectively used to be electrically connected with the internal circuit of described stimulating electrode 12 and described pulse generator 11.The connecting ring quantity of the every one end of described extension lead 13 is identical with the connecting ring quantity of described stimulating electrode 12.
Described pulse generator 11 inside comprises: a microprocessor module, a power module and a wireless communication module.Be electrically connected between described microprocessor module, power module and wireless communication module.Described microprocessor module has the program editted, and can produce the electric stimulation pulse signal of different frequency, different pulse width, different amplitude.The stimulus waveform of this electric stimulation pulse signal is including but not limited to square wave, sine wave, exponential wave, triangular wave.In addition, described wireless communication module and described vitro program controlled instrument 14 wireless connections, thus the program of described microprocessor module can be selected by described vitro program controlled instrument 14, regulate program parameter, thus change the electric stimulation pulse signal exported.
Please with further reference to Fig. 2, described pulse generator 11 has a coupling assembling 110.Described coupling assembling 110 is for being connected the internal circuit of described pulse generator 11 with an electrode cable 15.In the present invention, described stimulating electrode 12 and described extension lead 13 are referred to as electrode cable 15.Described coupling assembling 110 comprises adapter 111, screw 112, sealing-plug 113 and fluid sealant 114.
Described adapter 111 can be arranged at the optional position of described pulse generator 11 housing.In one embodiment, described adapter 111 is the top cover of described pulse generator 11.Please with further reference to Fig. 3, described adapter 111 has at least one plug wire hole 115, at least one fixing hole 116 and at least one contiguous block 117.The quantity of described plug wire hole 115 is identical with the quantity of described stimulating electrode 12.Each plug wire hole 115 at least one fixing hole 116 corresponding, and be communicated with corresponding fixing hole 116.Described fixing hole 116 and described contiguous block 117 one_to_one corresponding are arranged, and described contiguous block 117 is exposed by corresponding fixing hole 116.The quantity of described fixing hole 116 is identical with the quantity of the connecting ring of described stimulating electrode 12.After described plug wire hole 115 is inserted in one end of described electrode cable 15, the connecting ring of described electrode cable 15 is electrically connected with contiguous block 117 one_to_one corresponding of described adapter 111.
Described fixing hole 116 is a stepped hole, and it comprises one first perforate 1161, one second perforate 1162 and one the 3rd perforate 1163.Described first perforate 1161, second perforate 1162 and the 3rd perforate 1163 are interconnected.In one embodiment, described first perforate 1161, second perforate 1162 and the 3rd perforate 1163 are three round holes of coaxial setting.The aperture of described first perforate 1161 is greater than the aperture of described second perforate 1162.The aperture of described second perforate 1162 is greater than the aperture of described 3rd perforate 1163.Described 3rd perforate 1163 is for partial receipt and fixing described screw 112.The aperture of described 3rd perforate 1163 slightly larger than the external diameter of described screw 112, thus makes this screw 112 pass.Described second perforate 1162 is for partial receipt and fixing described sealing-plug 113.The aperture of described second perforate 1162 is slightly less than the external diameter of described sealing-plug 113, thus makes described second perforate 1162 and described sealing-plug 113 interference fits.Described first perforate 1161 is for partial receipt and fixing described fluid sealant 114.
Refer to Fig. 4, described sealing-plug 113 comprises a cock body 1130.Described cock body 1130 adopts insulating elastic material to prepare.The shape of described cock body 1130 identical with described second perforate 1162 shape and with described second perforate 1162 interference fits.In one embodiment, described cock body 1130 is cylindrical silicon rubber.The present invention defines the top that side that screwdriver 20 when described cock body 1130 uses inserts is described cock body 1130, and the opposite side relative with this top is the bottom of described cock body 1130.The top of described cock body 1130 has a groove 1131.Described cock body 1130 inside has a gap 1132.The side of described groove 1131 is inclined-plane, thus the screwdriver 20 putting into this groove 1131 can be guided to gap 1132 place bottom described groove 1131.Described gap 1132 can make screwdriver 20 through this cock body 1130 and restore to the original state after screwdriver 20 is extracted.
In one embodiment, the opening of described groove 1131 is wicker leaf shape and has two concave curvatures.The length direction of described gap 1132 through described groove 1131 bottom centre position and along described groove 1131 extends.The width in described gap 1132 needs according to screwdriver 20 knife bar diameter design, described cock body 1130 can not be torn when guaranteeing that screwdriver 20 passes.In one embodiment, described gap 1132 at least extends to another relative side from a side of described groove 1131.In another embodiment, the two ends in described gap 1132 extend on the cock body 1130 outside described groove 1131 respectively.Be appreciated that when screwdriver 20 cutter head can strut described gap 1132 along the guiding of described groove 1131 gradually when entering to both sides, thus the cock body 1130 preventing cutter head from withstanding near described gap 1132 stretch, and causes permanent deformation or tears downwards.The elastic deformation separately caused to both sides due to the cock body 1130 near described gap 1132 is less, can not damage the shape in described gap 1132, and after screwdriver 20 is extracted, described gap 1132 can restore to the original state rapidly.
Refer to Fig. 5-6, the bottom of described cock body 1130 has a hole 1133.Described groove 1131 is communicated with hole 1133 by described gap 1132.Described hole 1133 comprises one first hole 1133a, one second hole 1133b and the 3rd hole 1133c.Described first hole 1133a, the second hole 1133b and the 3rd hole 1133c set gradually from inside to outside and are interconnected.Preferably, described first hole 1133a, the second hole 1133b and the coaxial setting of the 3rd hole 1133c.The aperture of described first hole 1133a slightly larger than the diameter of described screwdriver 20 knife bar, thus makes described first hole 1133a can hold the insertion of screwdriver 20 smoothly.The aperture of described first hole 1133a much smaller than the internal diameter of described screw 112, thus makes described screw 112 can not insert in described first hole 1133a.Further, when the space that described first hole 1133a is formed can hold the insertion of screwdriver 20 cutter head, the deflection that the cock body 1130 near described gap 1132 is downward, thus make cock body 1130 of this distortion downwards can not touch hard screw 112 end.Be appreciated that if the cock body of portion deforms 1130 to be clipped in the middle of screwdriver 20 cutter head and screw 112 and to be subject to certain extruding force effect, then can cause the damage of the cock body 1130 of this distortion.Part screw 112 slightly larger than the external diameter of described screw 112, thus can be accommodated in the aperture of described second hole 1133b.The aperture of described 3rd hole 1133c will be slightly less than the external diameter of described screw 112 and be more than or equal to the interior warp of described screw 112, thus described screw 112 can be clamped.When being appreciated that described screw 112 screws out counterclockwise, upwards can easier insert in described second hole 1133b.Described screw 112 can clamp by the sidewall of described 3rd hole 1133c, makes described screw 112 keep vertical state.Further, the sidewall of described 3rd hole 1133c, in the very thin thickness of described 3rd hole 1133c depth direction, is generally 0.2 millimeter ~ 0.4 millimeter.The very thin and aperture of described second hole 1133b of sidewall thickness due to described 3rd hole 1133c is slightly larger than the external diameter of described screw 112, therefore, when described screw 112 screws out counterclockwise, both can not be painstaking from the sidewall of described 3rd hole 1133c, also can not be painstaking from the sidewall of described second hole 1133b, thus when can prevent described screw 112 from screwing out counterclockwise, described sealing-plug 113 jack-up is come.Be appreciated that the degree of depth of described second hole 1133b and the 3rd hole 1133c selects have relevant to the length of described screw 112.In one embodiment, the length of described screw 112 is 2.0 millimeters, and the described second hole 1133b degree of depth is 0.4 millimeter, and the degree of depth of described 3rd hole 1133c is 0.3 millimeter.
Refer to Fig. 7-8, in another embodiment, described sealing-plug 113 also can make Split type structure.Particularly, described cock body 1130 comprises the sleeve 1130c that a base 1130a, is arranged at the core 1130b on this base 1130a and is sheathed on this core 1130b.Described sealing-plug 113 entirety is one cylindrical.Described base 1130a and described core 1130b is round table-like.The height of described base 1130a is much smaller than the height of described core 1130b and diameter is greater than the diameter of described core 1130b.Described base 1130a and described core 1130b is coaxially arranged and one-body molded.Described sleeve 1130c is a hollow circuit cylinder.The interior diameter through being equal to or slightly less than described core 1130b of described sleeve 1130c.The external diameter of described sleeve 1130c equals the diameter of described base 1130a.Described base 1130a and described core 1130b adopts silicone rubber to prepare.Described sleeve 1130c can adopt silicone rubber to prepare, also can the hardness such as metal or resin larger material preparation.The top of described core 1130b has a groove 1131.Described core 1130b inside has this gap 1132 and described core 1130b is divided into symmetrical two halves by described gap 1132.The problem that this Split type structure can avoid middle gap 1132 to cut partially and easily tear.
Refer to Fig. 9, comprise the following steps when described coupling assembling 110 is connected and fixed: one end screw 112 with interior hexagonal pit 1120 to be inserted bottom described sealing-plug 113 in second hole 1133b and clamped by described 3rd hole 1133c; Sealing-plug 113 is put into together with screw 112 fixing hole 116 of described adapter 111; Screwdriver 20 to be inserted in this screw 112 in hexagonal pit 1120 from gap 1132 through sealing-plug 113; This screw 112 is rotated after fixing and extract screwdriver 20; Fluid sealant 114 is adopted to be sealed in described sealing-plug 113 top and fixing hole 116.
The adapter that sealing-plug 113 of the present invention can be coordinated to use is appreciated that described adapter 111 is not limited to the connector construction of above-mentioned pulse generator 11, as long as all can realize the present invention.Such as, for connecting the adapter of stimulating electrode 12 and extension lead 13.Therefore, as long as the implantable medical device including the coupling assembling adopting sealing-plug of the present invention is all within scope.
In addition, those skilled in the art can also do other changes in spirit of the present invention, and these changes done according to the present invention's spirit all should be included in the present invention's scope required for protection.
Claims (10)
1. a sealing-plug, it is for implantable medical device and comprise: a cock body adopting insulating elastic material to prepare, the top of described cock body has a groove, and the bottom of described cock body has a hole, and described cock body inside has a gap be communicated with hole by this groove; Described gap is used for making a screwdriver through this cock body, and described hole is used for partial receipt one screw; It is characterized in that, described hole comprises one and sets gradually from inside to outside and the first hole be interconnected and the second hole, and the diameter of described first hole is less than the diameter in described second hole.
2. sealing-plug as claimed in claim 1, is characterized in that, when the space of described first hole formation can hold the insertion of this screwdriver, and the deflection that the cock body near described gap is downward.
3. sealing-plug as claimed in claim 1, is characterized in that, the aperture of described first hole is greater than the diameter of described screwdriver knife bar and is less than the internal diameter of described screw; The aperture of described second hole is greater than the external diameter of described screw.
4. sealing-plug as claimed in claim 3, it is characterized in that, described hole also comprises one and is arranged at the 3rd hole be communicated with outside described second hole and with this second hole, and the aperture of described 3rd hole is less than the external diameter of described screw and is more than or equal to the internal diameter of described screw.
5. sealing-plug as claimed in claim 1, it is characterized in that, described groove has two concave curvatures, and the length direction of described gap through described bottom portion of groove center and along described groove extends, and described gap at least extends to another relative side from a side of described groove.
6. sealing-plug as claimed in claim 1, it is characterized in that, described sealing-plug is Split type structure, and described cock body comprises the sleeve that a base, is arranged at the core on this base and is sheathed on this core.
7. sealing-plug as claimed in claim 6, it is characterized in that, described base and described core are round table-like; The height of described base is less than the height of described core and diameter is greater than the diameter of described core; Described base and described core are coaxially arranged and one-body molded; Described sleeve is a hollow circuit cylinder; The interior diameter through being equal to or less than described core of described sleeve; The external diameter of described sleeve equals the diameter of described base.
8. sealing-plug as claimed in claim 1, it is characterized in that, described insulating elastic material is silicone rubber.
9. a sealing-plug, it is for implantable medical device and comprise: a cock body, and described cock body has a top and a bottom relative with this top, and described cock body inside has one to extend to bottom gap from the top of described cock body; Described gap can make screwdriver pass described cock body and restore to the original state after screwdriver is extracted; The bottom of described cock body has a hole, it is characterized in that, described hole comprises one and sets gradually from inside to outside and the first hole be interconnected and the second hole, and the diameter of described first hole is less than the diameter in described second hole.
10. an implantable medical device, it comprises: adapter, electrode cable, screw and sealing-plug; It is characterized in that, described sealing-plug is any one in the sealing-plug as described in claim 1 to 9.
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CN201510517135.XA CN105107091B (en) | 2015-08-21 | 2015-08-21 | Sealing-plug and the implantable medical device using the sealing-plug |
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CN201510517135.XA CN105107091B (en) | 2015-08-21 | 2015-08-21 | Sealing-plug and the implantable medical device using the sealing-plug |
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CN105771090A (en) * | 2016-05-11 | 2016-07-20 | 常州瑞神安医疗器械有限公司 | Sealing structure for implantable-type medical instrument, and pulse generator |
CN107596563A (en) * | 2017-10-13 | 2018-01-19 | 乐普医学电子仪器股份有限公司 | Implanted cardiac pacemaker connector sealing structure |
CN110732086A (en) * | 2018-07-20 | 2020-01-31 | 苏州景昱医疗器械有限公司 | connection structure and pulse generator with same |
CN110816233A (en) * | 2018-08-09 | 2020-02-21 | 英纳法天窗系统集团有限公司 | Open roof construction for a vehicle and method of attaching a panel |
CN110947097A (en) * | 2019-11-29 | 2020-04-03 | 常州瑞神安医疗器械有限公司 | Self-sealing plug structure for implantable medical device and implantable medical device |
WO2023051484A1 (en) * | 2021-09-30 | 2023-04-06 | 苏州景昱医疗器械有限公司 | Connection device and electrical neurostimulation system |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN105771090A (en) * | 2016-05-11 | 2016-07-20 | 常州瑞神安医疗器械有限公司 | Sealing structure for implantable-type medical instrument, and pulse generator |
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CN107596563A (en) * | 2017-10-13 | 2018-01-19 | 乐普医学电子仪器股份有限公司 | Implanted cardiac pacemaker connector sealing structure |
CN110732086A (en) * | 2018-07-20 | 2020-01-31 | 苏州景昱医疗器械有限公司 | connection structure and pulse generator with same |
CN110816233A (en) * | 2018-08-09 | 2020-02-21 | 英纳法天窗系统集团有限公司 | Open roof construction for a vehicle and method of attaching a panel |
CN110816233B (en) * | 2018-08-09 | 2023-08-08 | 英纳法天窗系统集团有限公司 | Open roof construction for a vehicle and method of attaching a panel |
CN110947097A (en) * | 2019-11-29 | 2020-04-03 | 常州瑞神安医疗器械有限公司 | Self-sealing plug structure for implantable medical device and implantable medical device |
CN110947097B (en) * | 2019-11-29 | 2023-06-20 | 常州瑞神安医疗器械有限公司 | Self-sealing plug structure for implantable medical device and implantable medical device |
WO2023051484A1 (en) * | 2021-09-30 | 2023-04-06 | 苏州景昱医疗器械有限公司 | Connection device and electrical neurostimulation system |
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