CN114295893A - Needle electrode impedance testing device - Google Patents
Needle electrode impedance testing device Download PDFInfo
- Publication number
- CN114295893A CN114295893A CN202111589223.2A CN202111589223A CN114295893A CN 114295893 A CN114295893 A CN 114295893A CN 202111589223 A CN202111589223 A CN 202111589223A CN 114295893 A CN114295893 A CN 114295893A
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- Prior art keywords
- electrode
- needle
- container
- plate
- hole
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Links
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 239000011810 insulating material Substances 0.000 claims abstract description 8
- 239000002504 physiological saline solution Substances 0.000 claims abstract description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 5
- 239000000523 sample Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Images
Abstract
The invention discloses a pin electrode impedance testing device, wherein a pin electrode comprises a pin body, a conductive wire and a pin base, the pin base is provided with a socket, a first electrode and a second electrode are arranged in the socket, the first electrode is electrically connected with the conductive wire, the second electrode is electrically connected with the pin body, and the tester comprises a container, a cover and a measuring device; the container is made of transparent insulating materials and is used for containing the physiological saline, and the top of the container is provided with a container opening; the cover is made of insulating material and is arranged at the container opening; the cover comprises a lower bottom plate and an upper cover plate which is detachably covered on the lower bottom plate, a plurality of conical holes for placing the needle bases are formed in the lower bottom plate, and each conical hole comprises an upper orifice and a lower orifice with the caliber smaller than that of the upper orifice; the upper covering plate is provided with a through hole coaxial with the conical hole, and the diameter of the through hole is between the inner diameter and the outer diameter of the opening part of the socket; the measuring device is provided with a plug which can be matched with the needle seat. The device is used for rapidly measuring the conductivity of the needle electrode.
Description
Technical Field
The invention relates to the field of needle electrodes, in particular to a needle electrode impedance testing device.
Background
The concentric needle electrode is comprised of a conductive needle body (e.g., a stainless steel needle body) and a conductive wire (e.g., made of stainless steel, silver, or platinum) located in the lumen of the needle body. The needle body is connected with a needle seat, and a positive electrode and a negative electrode are integrated in the needle seat. The tip of the conductive wire is exposed and is flush with the front end of the needle body. The needle body and the conductive wire are respectively electrically connected with the electrode in the needle seat. The current signal of human muscle nerve is weak, so the needle electrode is required to have good conductivity, and no device capable of rapidly detecting the resistance of the needle electrode exists in the prior art.
Disclosure of Invention
According to one aspect of the present invention, a needle electrode impedance test device is provided for rapidly detecting the resistance of a needle electrode.
The needle electrode impedance testing device comprises a needle body, a conductive wire concentrically arranged in an inner cavity of the needle body and insulated from the needle body, and a needle base arranged at the tail end of the needle body, wherein the needle base is provided with a socket; the container is made of transparent insulating materials and is used for containing the physiological saline, and the top of the container is provided with a container opening; the cover is made of insulating material and is arranged at the container opening; the cover comprises a lower bottom plate and an upper cover plate which is detachably covered on the lower bottom plate, a plurality of conical holes for placing the needle bases are formed in the lower bottom plate, and each conical hole comprises an upper orifice and a lower orifice with the caliber smaller than that of the upper orifice; the upper covering plate is provided with a through hole coaxial with the conical hole, and the diameter of the through hole is between the inner diameter and the outer diameter of the opening part of the socket; the measuring device is provided with a plug which can be matched with the needle seat.
In some embodiments, the needle electrode is inserted into the tapered bore after inversion; the needle body extends into the container through the tapered hole, and the tail end of the needle body is immersed in the physiological saline; the needle seat is supported in the conical hole, and the upper covering plate covers the lower base plate and limits the needle seat in the conical hole.
In some embodiments, the inner wall of the conical hole is provided with an elastic rubber layer; when the needle seat is freely placed in the conical hole, the end part of the needle seat is higher than the upper orifice of the conical hole; when the upper covering plate and the lower bottom plate are arranged, the upper covering plate presses the needle seat to enable the rubber layer to be extruded and deformed.
In some embodiments, the measuring device further comprises an ohmmeter, the plug comprises an insulating body, a hole concentric with the insulating body is formed in the insulating body, a third electrode is arranged on the inner wall of the hole, a fourth electrode is arranged on the outer wall of the insulating body, the third electrode and the fourth electrode are respectively electrically connected with two poles of the ohmmeter, when the plug is inserted into the socket, the first electrode can be inserted into the hole and contacted with the third electrode, and the second motor can be contacted with the fourth electrode.
In some embodiments, the first electrode is a cylindrical electrode and the second electrode is a dome electrode.
In some embodiments, the container has a mouth with at least two rotatable latches at two opposite positions, each latch comprises a latch plate and a locking portion disposed at the inner side of the latch plate, and the locking portion hooks the edge of the upper cover plate to lock the lower base plate and the upper cover plate to the mouth of the container.
In some embodiments, the upper covering plate is provided with rotatable latches at two opposite positions, each latch comprises a latch plate and a clamping portion arranged on the inner side of the latch plate, and the clamping portion hooks the outer edge of the container opening to lock the lower bottom plate and the upper covering plate on the container opening
In some embodiments, the wall of the container has graduation marks.
The invention has the beneficial effects that:
(1) immersing the tip of the needle electrode in physiological saline, simulating the electric conduction state of the needle electrode when the needle electrode is inserted into a human body, and measuring the resistance between the two electrodes of the needle electrode;
(2) when the resistance is measured, the pin electrodes are distributed on the lower bottom plate of the cover and limited by the upper covering plate of the cover, the cover and the container are locked by the quickly-operated lock catch, and the plugs of the measuring device are inserted into the sockets of the pin base one by a detector, so that the detection efficiency is high;
(3) the electrodes of a conventional ohmmeter are modified to make them suitable for connection to the sockets of a pin electrode.
Drawings
Fig. 1 is a schematic structural view of a needle electrode according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a pin electrode impedance testing apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a needle electrode impedance testing apparatus according to another embodiment of the present invention.
Fig. 4 is a partial state view of the needle electrode impedance testing device according to another embodiment of the present invention, when the cover plate is not pressed against the needle holder.
Fig. 5 is a partial state view of the needle holder pressed by the upper cover plate of the needle electrode impedance testing apparatus according to another embodiment of the present invention.
Fig. 6 is a partial sectional view of a socket of a measuring device of a needle electrode impedance testing apparatus according to an embodiment of the present invention.
Description of the symbols:
the probe electrode comprises a probe electrode 1, a probe body 2, a conductive wire 3, a probe seat 4, a socket 5, a first electrode 6, a second electrode 7, a container 8, a cover 9, a measuring device 10, a container opening 11, a lower base plate 12, an upper covering plate 13, a taper hole 14, a through hole 17, a plug 18, a rubber layer 19, an ohmmeter 20, an insulating body 21, a hole 22, a third electrode 23, a fourth electrode 24, a latch 25, a latch plate 26 and a clamping part 27
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The needle electrode impedance testing device provided by the embodiment of the invention is used for detecting the concentric needle electrode 1. Referring to fig. 1, the needle electrode 1 includes a needle body 2, a conductive filament 3 concentrically disposed in an inner cavity of the needle body 2 and insulated from the needle body 2, and a needle holder 4 disposed at a tail end of the needle body 2, the needle holder 4 having a socket 5, a first electrode 6 concentrically disposed with the socket 5 and a second electrode 7 disposed at two sides of the first electrode 6 and not in contact with the first electrode 6 disposed in the socket 5, the first electrode 6 electrically connected to the conductive filament 3, and the second electrode 7 electrically connected to the needle body 2. The needle seat 4 has a large end and a small end and is approximately conical. The socket 5 is cylindrical, the first electrode 6 is a columnar electrode, and the second electrode 7 is a spring plate electrode. The needle electrode 1 is electrically connected with an external lead wire through the socket 5, the first electrode 6 and the second electrode 7 of the needle stand 4.
Referring to fig. 2, the tester includes a container 8, a cover 9, and a measuring device 10. The container 8 is made of a transparent insulating material to contain physiological saline, and the top of the container 8 has a container port 11. The normal saline is sodium chloride solution with the concentration of 0.85-0.9%. The lid 9 is made of an insulating material and covers the container mouth 11. The cover 9 includes a lower plate 12 and an upper cover plate 13 detachably covering the lower plate 12, and the lower plate 12 has a plurality of tapered holes 14 for receiving the wafers 4. Preferably, the tapered holes 14 are arranged in an array on the lower plate 12. The tapered hole 14 includes an upper orifice and a lower orifice having a smaller caliber than the upper orifice. The upper shroud plate 13 is provided with a through hole 17 coaxial with the tapered hole 14, and the diameter of the through hole 17 is between the inner diameter and the outer diameter of the mouth of the socket 5. The cap 9 is used to support the needle electrode 1, and specifically, the needle electrode 1 is inserted into the tapered hole 14 after being inverted, the needle body 2 is inserted into the container 8 through the tapered hole 14, the tip of the needle body 2 is immersed in the saline, and the socket 5 of the needle holder 4 faces upward. The hub 4 is supported within the tapered bore 14 and the upper cover 13 overlies the lower base plate 12 and confines the hub 4 within the tapered bore 14.
The measuring device 10 has a plug 18 which can be fitted with the needle hub 4. Because the diameter of the through hole 17 is between the inner diameter and the outer diameter of the mouth of the socket 5, the upper cover plate 13 can limit the needle seat 4, but does not shield the socket 5, so that the plug 18 of the measuring device 10 can be inserted into the socket 5.
In some embodiments, referring to fig. 4 and 5, the inner wall of the tapered hole 14 is provided with an elastic rubber layer 19; when the needle seat 4 is freely placed in the tapered hole 14, the end part of the needle seat 4 is higher than the upper orifice of the tapered hole 14; when the upper cover plate 13 is pressed on the lower base plate 12, the upper cover plate 13 presses the needle base 4 to press and deform the rubber layer 19. The rubber layer 19 is used as a buffer, so that the needle seat 4 can be kept to be compressed, and the needle seat 4 is prevented from being crushed.
In some embodiments, referring to fig. 6, the measuring apparatus 10 further includes an ohmmeter 20, the plug 18 includes an insulating body 21, a hole 22 is formed in the insulating body 21 and is concentric with the insulating body 21, a third electrode 23 is formed on an inner wall of the hole 22, a fourth electrode 24 is formed on an outer wall of the insulating body 21, the third electrode 23 and the fourth electrode 24 are electrically connected to two poles of the ohmmeter 20, respectively, when the plug 18 is inserted into the socket 5, the first electrode 6 can be inserted into the hole 22 and contact with the third electrode 23, and the second electrode 7 can contact with the fourth electrode 24. The measuring device 10 is selected as an ohmmeter 20 capable of accurately measuring in the order of hundreds of ohms. The current input of the ohmmeter 20 is modified in the form of a plug 18, depending on the characteristics of the socket 5, the first electrode 6 and the second electrode 7 of the pin electrode 1. The plug 18 is cylindrical and has an axial bore 22 in its interior, the bore 22 being adapted to receive the cylindrical first electrode 6. When the plug 18 is inserted into the socket 5, the first electrode 6 is electrically contacted with the third electrode 23, and the second electrode 7 is electrically contacted with the fourth electrode 24.
In some embodiments, referring to fig. 2, the rim of the mouth of the container 8 is provided with at least two rotatable locking catches 25, each locking catch 25 comprises a locking catch plate 26 and a locking portion 27 disposed on the inner side of the locking catch plate 26, and the locking portion 27 hooks the edge of the upper covering plate to lock the lower bottom plate 12 and the upper covering plate 13 to the mouth of the container 8. The present embodiment provides a snap 25 structure for quick locking of the container 8, the lower base plate 12 and the upper plate 13. The container 8 is made of plastic material, and the latch plate 26 is integrally formed with the container 8. The container 8, the lower plate 12 and the upper plate 13 can be connected by rotating the locking plate 26 to engage the engaging portion 27 with the edge of the upper plate 13.
In some embodiments, referring to fig. 3, at least two opposite positions of the upper covering plate 13 are provided with rotatable locking buckles 25, each locking buckle 25 comprises a locking plate 26 and a clamping portion 27 disposed at the inner side of the locking plate 26, and the clamping portion 27 hooks the outer edge of the container opening to lock the lower base plate 12 and the upper covering plate 13 to the opening of the container 8. The present embodiment provides a snap 25 structure for quick locking of the container 8, the lower base plate 12 and the upper plate 13. The upper covering plate 13 is made of plastic material, and the latch plate 26 and the upper covering plate 13 are integrally formed. The container 8, the lower base plate 12 and the upper plate 13 can be connected by rotating the locking plate 26 to engage the engaging portion 27 with the edge of the container 8.
In some embodiments, the wall of the container 8 has graduation marks. The scale lines are used to indicate the level of saline in the reservoir 8.
The invention has the beneficial effects that:
(1) immersing the tip of the needle electrode 1 in physiological saline, simulating the electric conduction state of the needle electrode 1 when inserted into a human body, and measuring the resistance between the two electric electrodes of the needle electrode 1;
(2) when measuring the resistance, the pin electrodes 1 are arranged on the lower bottom plate 12 of the cover 9 and limited by the upper covering plate 13 of the cover 9, the cover 9 and the container 8 are locked by the lock catch 25 which is fast in operation, and the plug 18 of the measuring device 10 is inserted into the socket 5 of the pin base 4 one by a tester, so that the detection efficiency is high;
(3) the electrodes of the conventional ohmmeter 20 are modified to be suitable for connection with the sockets 5 of the pin electrodes 1.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The needle electrode impedance testing device is characterized in that the tester comprises a container, a cover and a measuring device, wherein the container comprises a needle body, a conductive wire which is concentrically arranged in an inner cavity of the needle body and is insulated from the needle body, and a needle base which is arranged at the tail end of the needle body; the container is made of transparent insulating materials and is used for containing physiological saline, and the top of the container is provided with a container opening; the cover is made of an insulating material and is arranged at the container opening in a covering mode; the cover comprises a lower base plate and an upper cover plate which is detachably covered on the lower base plate, a plurality of conical holes for placing the needle bases are formed in the lower base plate, and each conical hole comprises an upper orifice and a lower orifice with the caliber smaller than that of the upper orifice; a through hole coaxial with the conical hole is formed in the upper covering plate, and the diameter of the through hole is between the inner diameter and the outer diameter of the opening of the socket; the measuring device is provided with a plug which can be matched with the needle seat.
2. The needle electrode impedance testing device of claim 1, wherein the needle electrode is inserted into the tapered bore after being inverted; the needle body penetrates through the tapered hole to extend into the container, and the tail end of the needle body is immersed in the physiological saline; the needle seat is supported in the tapered hole, and the upper covering plate covers the lower base plate and limits the needle seat in the tapered hole.
3. The needle electrode impedance testing device of claim 2, wherein the inner wall of the conical hole is provided with an elastic rubber layer; when the needle seat is freely placed in the conical hole, the end part of the needle seat is higher than the upper orifice of the conical hole; when the upper covering plate and the lower bottom plate are arranged, the upper covering plate presses the needle base to enable the rubber layer to be extruded and deformed.
4. The pin electrode impedance testing device of claim 1, wherein the measuring device further comprises an ohmmeter, the plug comprises an insulating body, a hole concentric with the insulating body is formed in the insulating body, a third electrode is arranged on the inner wall of the hole, a fourth electrode is arranged on the outer wall of the insulating body, the third electrode and the fourth electrode are respectively electrically connected with two poles of the ohmmeter, when the plug is inserted into the socket, the first electrode can be inserted into the hole and contacted with the third electrode, and the second motor can be contacted with the fourth electrode.
5. The needle electrode impedance testing device of claim 1, wherein the first electrode is a cylindrical electrode and the second electrode is a dome electrode.
6. The needle electrode impedance testing device according to claim 1, wherein the container has rotatable latches at two opposite positions on the outer edge of the mouth, the latches include latch plates and engaging portions disposed on the inner sides of the latch plates, and the engaging portions hook the edges of the upper cover plate to lock the lower base plate and the upper cover plate to the mouth of the container.
7. The needle electrode impedance testing device of claim 1, wherein the upper cover plate is provided at least at two opposite positions with rotatable latches, each latch comprises a latch plate and a clamping portion arranged at the inner side of the latch plate, and the clamping portion hooks the outer edge of the container opening to lock the lower base plate and the upper cover plate to the container opening.
8. The needle electrode impedance testing device of claim 1, wherein the wall of the container has graduation marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111589223.2A CN114295893B (en) | 2021-12-23 | 2021-12-23 | Needle electrode impedance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111589223.2A CN114295893B (en) | 2021-12-23 | 2021-12-23 | Needle electrode impedance testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114295893A true CN114295893A (en) | 2022-04-08 |
| CN114295893B CN114295893B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111589223.2A Active CN114295893B (en) | 2021-12-23 | 2021-12-23 | Needle electrode impedance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114295893B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002321752A (en) * | 2001-04-25 | 2002-11-05 | Yoshino Kogyosho Co Ltd | Container equipped with click type cap |
| CN103347613A (en) * | 2010-12-23 | 2013-10-09 | 埃佩多夫股份公司 | Reaction vessel having a cover |
| CN103754516A (en) * | 2014-01-13 | 2014-04-30 | 上海鸿研物流技术有限公司 | Container lid locking mechanism and container |
| CN206311698U (en) * | 2016-11-14 | 2017-07-07 | 上海海神医疗电子仪器有限公司 | Myoelectricity pin conductivity detection device |
| CN206313219U (en) * | 2016-12-19 | 2017-07-07 | 苏州乐普斯电子有限公司 | Disposable myoelectricity pin socket |
| CN206576864U (en) * | 2016-12-19 | 2017-10-24 | 苏州乐普斯电子有限公司 | A kind of myoelectricity pin |
| CN206714755U (en) * | 2016-11-25 | 2017-12-08 | 向卓林 | A kind of microneedle electrodes |
| CN107576898A (en) * | 2017-09-04 | 2018-01-12 | 南方电网科学研究院有限责任公司 | Measure the experimental provision of iknsulating liquid lightning impulse voltage endurance |
-
2021
- 2021-12-23 CN CN202111589223.2A patent/CN114295893B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002321752A (en) * | 2001-04-25 | 2002-11-05 | Yoshino Kogyosho Co Ltd | Container equipped with click type cap |
| CN103347613A (en) * | 2010-12-23 | 2013-10-09 | 埃佩多夫股份公司 | Reaction vessel having a cover |
| CN103754516A (en) * | 2014-01-13 | 2014-04-30 | 上海鸿研物流技术有限公司 | Container lid locking mechanism and container |
| CN206311698U (en) * | 2016-11-14 | 2017-07-07 | 上海海神医疗电子仪器有限公司 | Myoelectricity pin conductivity detection device |
| CN206714755U (en) * | 2016-11-25 | 2017-12-08 | 向卓林 | A kind of microneedle electrodes |
| CN206313219U (en) * | 2016-12-19 | 2017-07-07 | 苏州乐普斯电子有限公司 | Disposable myoelectricity pin socket |
| CN206576864U (en) * | 2016-12-19 | 2017-10-24 | 苏州乐普斯电子有限公司 | A kind of myoelectricity pin |
| CN107576898A (en) * | 2017-09-04 | 2018-01-12 | 南方电网科学研究院有限责任公司 | Measure the experimental provision of iknsulating liquid lightning impulse voltage endurance |
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| Publication number | Publication date |
|---|---|
| CN114295893B (en) | 2024-02-09 |
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