Universal electrical stimulation probe suite

Abstract

The universal type electrical stimulation probe suite comprises a stimulation probe module and a control module, the stimulation probe module comprises three metal stimulation probes, each metal stimulation probe wraps a probe surface insulating layer, a lining is fixed to the rear portion of each metal stimulation probe, and each lining is composed of a lining Luer connector, a lining holding portion and a lining matching face; the universal handle comprises a handle shell composed of a handle installation part and a handle holding part, an installation plate is fixed to the front end in the handle installation part, and connector fixing assemblies are fixed to the installation plate at intervals. Limiting plates are fixed at the inner rear end of the handle mounting part at intervals, limiting surfaces are arranged on the limiting plates, pins are fixed in the limiting surfaces, and metal elastic sheets are arranged in female ports at the head ends of the pins; the lining Luer connector is fixedly inserted into the connector fixing assembly, and at the moment, the tail of the corresponding metal stimulation probe penetrates through the connector fixing assembly and then enters the head end female opening of the corresponding contact pin, so that the metal elastic piece is extruded by the metal stimulation probe to be connected to form a passage.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical stimulation equipment, in particular to a universal electrical stimulation probe kit. Background Art

[0002] Disposable medical nerve stimulation probes, as an important medical device, play a vital role in surgery. With the continuous advancement of medical technology, this probe is increasingly used in neuroscience, neurosurgery, rehabilitation medicine and other fields. Disposable medical nerve stimulation probes are mainly used to electrically stimulate nerves during surgery to evaluate the functional status of nerves. By using this probe, doctors can understand the electrophysiological characteristics of nerves in real time during surgery, so as to better judge the integrity of nerves. This is crucial to the success of surgery, especially for those complex surgeries involving the nervous system.

[0003] However, different types and specifications of metal probes are generally required for different user groups and different surgical sites; the use of monopolar stimulation probes or bipolar stimulation probes is determined based on different clinical use needs, specific treatment needs and individual patient conditions. At present, the above replacement process of probes on the market generally takes a long time, and the exposure time of the damaged tissue of the surgeon is also prolonged, which will prolong the operation time and increase the risk of surgery. In addition, the general handles currently on the market will cause poor contact between the metal probe and the connecting shrapnel after the metal probe is replaced many times, resulting in insensitive electrical signal transmission, which may lead to misdiagnosis of the disease or damage to the patient's tissue, increasing the risk of doctor-patient conflicts. Utility Model Content

[0004] In view of the problems and shortcomings of the prior art, the utility model provides a universal electrical stimulation probe kit, which is used to realize free switching and free matching between metal stimulation probes of different shapes, and to realize flexible switching between monopolar stimulation and bipolar stimulation, thereby greatly reducing the intraoperative time, reducing the patient's wound exposure time, ensuring that frequent replacement of metal probes will not have any impact on the transmission of electrical signals, and improving the success rate of diagnosis or surgery.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides a universal electrical stimulation probe kit, which is characterized in that it includes a stimulation probe module, a pin module, a universal handle and a connecting cable, the stimulation probe module includes three metal stimulation probes, each of which is wrapped with an insulating layer on the probe surface, and a bushing is fixed on the rear of each metal stimulation probe and located on the outer layer of the insulating layer on the probe surface, each bushing is composed of a bushing Luer joint, a bushing gripping part and a bushing mating surface from the back to the front, each metal stimulation probe is provided with a protective cover, the pin module includes three pins, and each of the pins has a metal spring in the female port at the head end and a welding hole at the tail end;

[0007] The universal handle comprises a handle housing composed of a handle mounting part and a handle gripping part arranged at the front and rear, a mounting plate is fixed at the front end of the handle mounting part, a connector fixing assembly matched with the bushing Luer connector is fixed at intervals along the longitudinal direction on the mounting plate, and a limiting plate with a limited position surface is fixed at intervals along the longitudinal direction at the rear end of the handle mounting part, a fixed pin is placed in each of the limited positions, the central axis of each of the limited positions is in the same straight line with the central axis of the corresponding connector fixing assembly, and the tail end of each of the pins is welded to the corresponding electrode connecting wire at the head end of the connecting cable placed in the handle gripping part through a welding hole;

[0008] The sleeve Luer connector is plugged and fixed to the connector fixing assembly. At this time, the tail of the corresponding metal stimulation probe passes through the connector fixing assembly and enters the head end female port of the corresponding pin, so that the metal spring sheet is squeezed by the metal stimulation probe to form a passage.

[0009] The utility model has the advantages of simple structure, safety, reliability and high appearance quality.

[0010] In the utility model, the universal handle can be reused, thus saving the raw material cost of the manufacturer and the use cost of the users.

[0011] Compared with similar products on the market, the utility model can easily switch between monopolar stimulation and bipolar stimulation, and can quickly and easily switch between probes of different shapes. Frequent replacement of the stimulation probe module will not cause fatigue connection between the stimulation probe module and the universal handle, thereby causing the problem of reduced sensitivity or failure of electrical signal conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural explosion diagram of a universal electrical stimulation probe kit;

[0013] Figure 2 and Figure 3 It is a schematic diagram of the structure of a universal electrical stimulation probe kit;

[0014] Figure 4It is a cross-sectional schematic diagram of the handle upper shell and the handle lower shell structure;

[0015] Figure 5 It is a partial enlarged view of the handle upper shell and handle lower shell structure;

[0016] Figure 6 It is a cross-sectional schematic diagram of the stimulation probe module structure;

[0017] Figure 7 This is a partial enlarged view of the combination of the stimulation probe module and the lower shell of the handle;

[0018] Figure 8 It is a cross-sectional view of the assembly between the pin and the lower shell of the handle;

[0019] Fig. 9 It is a cross-sectional view of the combination of the tail of the metal stimulation probe and the female port of the pin head;

[0020] Fig.10 A schematic diagram of the combination of the connecting cable and the universal handle;

[0021] Fig.11 Schematic diagram of the electrode connection between the cable and the metal stimulation probe for monopolar stimulation;

[0022] Fig.12 Schematic diagram of the electrode connections between the cable and the metal stimulation probe for bipolar stimulation. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] like Figure 1-12 As shown, this embodiment provides a universal electrical stimulation probe kit, which includes a stimulation probe module 10, a universal handle 20, a connecting cable 30 and a pin module arranged from front to back. It is used to realize free switching and free matching between metal stimulation probes of different shapes, and to realize flexible switching between monopolar stimulation and bipolar stimulation, greatly reducing the intraoperative time, reducing the patient's wound exposure time, ensuring that frequent replacement of metal probes will not have any effect on electrical signal transmission, and improving the success rate of diagnosis or surgery.

[0025] The stimulation probe module 10 includes three metal stimulation probes 11, each of which is wrapped with a probe surface insulation layer 12, and a bushing 13 is fixed to the rear of each metal stimulation probe 11 and the outer layer of the probe surface insulation layer 12. Each bushing 13 is composed of a bushing Luer connector 131, a bushing gripping portion 132 and a bushing mating surface 133 from the back to the front. Each metal stimulation probe 11 is provided with a protective cover 14, and the protective cover 14 is interference fit with the bushing mating surface 133.

[0026] The universal handle 20 includes a handle shell, which includes a handle upper shell 21 and a handle lower shell 22 from top to bottom. A protrusion 211 is fixed to the bottom of the handle upper shell 21 along the bottom edge, and a concave mating surface 221 is provided to the top of the handle lower shell 22 along the top edge. An inverted triangular prism plastic part 212 is fixed to the bottom of the protrusion 211 along the bottom edge. The bottom tip of the inverted triangular prism plastic part 212 constitutes an ultrasonic welding line 213. Ultrasonic welding is performed along the ultrasonic welding line 213, and the inverted triangular prism plastic part 212 melts so that the protrusion 211 is welded to the concave mating surface 221, thereby welding the handle upper shell 21 and the handle lower shell 22 into one.

[0027] The front end of the universal handle 20 constitutes a handle mounting portion, and the rear end constitutes a handle gripping portion. A mounting plate 222 is fixed at the front end of the handle mounting portion of the handle lower shell 22. Connector fixing columns 223 that match the bushing Luer connectors 131 are fixed on the mounting plate 222 at intervals along the longitudinal direction. Each connector fixing column 223 is provided with a connector limiting fixing portion 224 that fixes the corresponding bushing Luer connector 131.

[0028] The pin module includes three pins 41 , each pin 41 has a hob pattern 411 on its surface, a metal spring 412 in the female port at the head end of each pin 41 , and a wedge-shaped surface and a welding hole 413 on the tail end.

[0029] Limiting plates 225 are fixed at intervals along the longitudinal direction inside the rear end of the handle mounting portion of the handle lower shell 22, and each limiting plate 225 is provided with a rubber-coated limiting surface, and a pin 41 is placed in each rubber-coated limiting surface. Each rubber-coated limiting surface is glued to the corresponding hob pattern 411 of the pin, and the central axis of each rubber-coated limiting surface is in the same straight line with the central axis of the corresponding joint limiting fixing portion 224, and the tail end of each pin 41 is welded to the corresponding electrode connecting line at the head end of the connecting cable 30 placed in the handle grip portion through a welding hole 413.

[0030] Positive and negative pole indication marks 214 are respectively provided at the top of the handle mounting portion of the handle upper shell 21 and directly above the joint fixing column 223. Specifically, the marks at the two side positions of the top of the handle mounting portion of the handle upper shell 21 are positive pole indication marks, and the mark at the middle position is the negative pole indication mark.

[0031] The tail ends of the pins 41 representing the positive pole located on both sides are welded to the red electrode connecting wire 31 at the head end of the connecting cable 30 through welding holes, and the red electrode connecting wire at the tail end of the connecting cable 30 is connected to the red socket 32. The tail end of the pin 41 representing the negative pole located in the middle is welded to the black electrode connecting wire 33 at the head end of the connecting cable 30 through welding holes, and the black electrode connecting wire at the tail end of the connecting cable is connected to the black socket 34.

[0032] A rectangular stopper 35 is provided on the electrode connection line at the head end of the connection cable 30, and a matching rib 228 is fixed at the tail end between the handle upper shell 21 and the handle lower shell 22 and located inside the handle grip portion, and the rectangular stopper 35 is fixed in the matching rib 228. The portion of the connection cable 30 placed outside the universal handle 20 is tied with a cable tie 36.

[0033] The operator holds the sleeve holding portion 132 of the sleeve 13 and inserts the sleeve Luer connector 131 of the sleeve 13 into the connector limiting fixing portion 224 to fix it. At this time, the tail portion 111 of the corresponding metal stimulation probe 11 passes through the connector limiting fixing portion 224 and enters the head end female port of the corresponding pin 41, and the metal spring sheet 412 of the pin 41 is squeezed and connected by the metal stimulation probe 11 to form a passage.

[0034] In this solution, the stimulation probe module 10 and the universal handle 20 are quickly connected and disassembled through the bushing Luer connector 131, and the protective sleeve 14 and the bushing 13 are connected through interference fit.

[0035] In this solution, the handle upper shell 21 is marked with positive and negative pole indication marks 214, which is intended to provide the operator with convenient, fast and eye-catching positive and negative pole determination marks.

[0036] In this solution, when the tail 111 of the metal stimulation probe 11 is inserted into the head end female port of the corresponding plug pin 41, the metal spring 412 of the plug pin 41 is deformed and squeezed by the metal stimulation probe 11 to form a connection passage. Due to the limited connection between the bushing Luer connector 131 and the connector limit fixing portion 224, the firmness between the stimulation probe module 10 and the universal handle 20 is guaranteed. Therefore, the metal spring 412 of the plug pin 41 only needs to meet the electrode connection with the tail 111 of the metal stimulation probe, and there is no need to consider the connection firmness between the elastic metal spring inside the plug pin and the metal stimulation probe. This practice greatly improves the service life of the universal handle.

[0037] In this solution, the combination of the rubber-coated limiting surface on the pin 41 and the handle lower shell 22 is an in-mold injection rubber-coated, and the surface of the pin 41 has a hob pattern 411, which further strengthens the firmness between the pin 41 and the handle lower shell 22.

[0038] In this solution, the rectangular stopper 35 at the tail of the connecting cable 30 is used to enhance the connection firmness between the connecting cable 30 and the universal handle 20 .

[0039] In this scheme, two electrodes are usually used during the electrical stimulation process, one as the positive electrode and the other as the negative electrode. The current flows from the positive electrode to the negative electrode and is conducted into the human body through the head 112 of the metal stimulation probe. The intensity and duration of the current can be adjusted as needed to adapt to different treatment needs. The monopolar metal stimulation probe usually has only one electrode, usually the negative electrode, and stimulates the nerves by the flow of current between the probe and the reference electrode. The current flows through the patient's tissues and organs to produce an electrical stimulation effect. This stimulation method usually requires a higher current intensity because the current needs to flow through a larger tissue area to reach the reference electrode. Therefore, the monopolar metal stimulation probe is usually suitable for larger nerves and muscle tissues. In contrast, the bipolar metal stimulation probe has two electrodes, which are usually a certain distance apart, and the current flows between the two electrodes. The advantage of this stimulation method is that the current only flows between the two electrodes and does not need to flow through other tissues and organs. Therefore, the bipolar metal stimulation probe can produce a more concentrated stimulation effect and is suitable for smaller nerves and muscle tissues. In addition, another advantage of the bipolar stimulation probe is that it can better control the diffusion range and direction of the current, thereby more accurately stimulating specific nerves or muscle tissues.

[0040] The monopolar stimulation and bipolar stimulation of the metal stimulation probe are achieved by pre-welding the connecting cable and the tail end of the pin. The design uses connecting cables of different colors (red and black) to distinguish them. The red tail end of the connecting cable is connected to the two positive poles of the metal stimulation probe, and the connection methods include but are not limited to manual soldering, laser spot welding or crimping and other connection methods. The black tail end of the connecting cable is connected to a negative pole of the metal stimulation probe, and the connection methods include but are not limited to manual soldering, laser spot welding or crimping and other connection methods.

[0041] This solution can realize switching between monopolar stimulation and bipolar stimulation. When monopolar stimulation is needed, a metal stimulation probe 11 is inserted into the middle position, that is, the sleeve Luer connector 131 on the metal stimulation probe 11 is inserted into the connector limit fixing portion 224 at the middle position, thereby realizing monopolar stimulation; when bipolar stimulation is needed, three metal stimulation probes 11 are respectively inserted into three corresponding positions, that is, the sleeve Luer connector 131 on each metal stimulation probe 11 is inserted into the connector limit fixing portion 224 at the corresponding position, thereby realizing bipolar stimulation.

[0042] This solution can realize switching between metal stimulation probes of different shapes. When the flat-head metal stimulation probe needs to be replaced with a spherical metal stimulation probe for stimulation, the flat-head metal stimulation probe is directly taken out, and then the spherical metal stimulation probe is inserted into the corresponding position, that is, the sleeve Luer connector on the spherical metal stimulation probe is inserted into the connector limit fixing part at the corresponding position.

[0043] In this scheme, the metal stimulation probe 11 is generally made of 06Cr19Ni10 austenitic stainless steel material that complies with the GB / T 4240-2019 standard. According to clinical use requirements, when dealing with different surgical areas and surgical populations, it is often necessary to select metal probes of different shapes. The metal stimulation probe can be divided into spherical metal probes, flat-head metal probes, pointed needle metal probes, curved hook metal probes, and tongue-shaped metal probes, etc. according to their shapes, and the processing technology is mechanical processing; there are many shapes of probes, and a spherical metal probe is used as an example in this scheme.

[0044] The probe surface insulating layer 12 is usually implemented by using a biocompatible PTFE or PU coating layer or directly using a biocompatible PTFE, PVDF or other fluoroplastic heat shrink tube for insulation.

[0045] The universal handle 20 and the bushing 13 are generally made of acrylonitrile-butadiene-styrene (ABS) resin or other polymer resin materials that meet the GB / T 12672-2009 standard, and the processing technology is mold processing. ABS resin has good impact resistance and heat resistance, which means that the handle made of it can remain stable in various environments and can withstand a certain degree of wear and impact. In this solution, the upper and lower shells are ergonomically designed, with a neat and simple appearance, and the universal handle is designed with positive and negative pole indicator symbols, which greatly saves the operator's time and energy when replacing the metal probe.

[0046] The protective cover 14 is generally made of polypropylene (PP) in accordance with GB / T 12020-2008, and the processing technology is mold processing. The protective cover PP material shows good stability to most chemical substances and is not easily corroded by chemicals. This allows the PP protective cover to maintain stable performance when in contact with chemicals such as disinfectants and detergents, which is particularly important in clinical use, ensuring that medical staff can hold the equipment stably and improve work efficiency and safety.

[0047] The connecting cable 30 is usually made of PVC material that meets the requirements of GB / T 3956-2008 "Conductors of Cables" and GB / T12706-2016 "Copper Core and Aluminum Core Plastic Insulated Power Cables with Rated Voltage of 35kV (Um=40.5kV) and Below". The processing technology is mold processing, and the tail of the connecting cable is equipped with a rectangular limit block to enhance the connection firmness between the connecting cable and the universal handle. The internal core wire of the connecting cable and the conductive terminal at the tail of the connecting cable are made of brass or phosphor copper, and the conductive terminal connector plug at the tail of the connecting cable meets the requirements of German DIN42802 standard.

[0048] The pin 41 is made of a material with a brass body and a gold-plated surface. The gold plating can form a thin metal layer on the surface to improve the efficiency of current conduction, which can reduce signal attenuation and energy loss and ensure the quality and stability of signal transmission. The pin may often be in a harsh working environment and may be exposed to moisture, chemicals and other factors that may cause corrosion. The gold plating on the surface of the pin can effectively resist oxidation, corrosion and rust, protect the pin from damage by the external environment, and extend its service life.

[0049] The metal stimulation probe 11, the probe surface insulation layer 12, the bushing 13 and the protective cover 14 constitute the stimulation probe module. The combination between the stimulation probe module and the lower shell of the handle is designed and fixed for the bushing Luer connector. The connection method of the bushing Luer connector has the following advantages: 1. Convenient and fast: The bushing Luer connector adopts a quick-insert design, which makes connection and disassembly very convenient and quick, reducing the operation time; 2. High reliability: The bushing Luer connector is made of metal material, has high strength and reliability, and can ensure long-term and stable use; 3. Low cost: Compared with other connection methods, the manufacturing cost of the bushing Luer connector is lower and the price is relatively cheap.

[0050] The tail end of the plug pin 41 has a pre-processed welding hole and a wedge-shaped surface. The connection between the tail end of the plug pin and the connecting cable is generally achieved by manual soldering or laser spot welding.

[0051] The universal handle is reusable. The stimulation probe module should be sterilized before use, generally using ethylene oxide or irradiation sterilization. It is for single use. The stimulation probe module and the universal handle can be disassembled and assembled as needed during use during surgery.

[0052] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A universal electrical stimulation probe kit, characterized in that: It includes a stimulation probe module, a pin module, a universal handle and a connecting cable. The stimulation probe module includes three metal stimulation probes, each of which is wrapped with an insulating layer on the probe surface. A bushing is fixed on the rear of each metal stimulation probe and located on the outer layer of the insulating layer on the probe surface. Each bushing is composed of a bushing Luer joint, a bushing gripping part and a bushing mating surface from the back to the front. Each metal stimulation probe is provided with a protective cover. The pin module includes three pins. The head end of each pin contains a metal spring in the female port and the tail end is provided with a welding hole. The universal handle comprises a handle housing composed of a handle mounting part and a handle gripping part arranged at the front and rear, a mounting plate is fixed at the front end of the handle mounting part, a connector fixing assembly matched with the bushing Luer connector is fixed at intervals along the longitudinal direction on the mounting plate, and a limiting plate with a limited position surface is fixed at intervals along the longitudinal direction at the rear end of the handle mounting part, a fixed pin is placed in each of the limited positions, the central axis of each of the limited positions is in the same straight line with the central axis of the corresponding connector fixing assembly, and the tail end of each of the pins is welded to the corresponding electrode connecting wire at the head end of the connecting cable placed in the handle gripping part through a welding hole; The sleeve Luer connector is plugged and fixed to the connector fixing assembly. At this time, the tail of the corresponding metal stimulation probe passes through the connector fixing assembly and enters the head end female port of the corresponding pin, so that the metal spring sheet is squeezed by the metal stimulation probe to form a passage.

2. The universal electrical stimulation probe kit according to claim 1, characterized in that: The mounting plate is fixed with joint fixing columns which match the bushing Luer joints one by one at intervals along the longitudinal direction, and each of the joint fixing columns is provided with a joint limiting fixing portion which fixes the corresponding bushing Luer joint, and the joint fixing columns and the joint limiting fixing portion constitute a joint fixing assembly.

3. The universal electrical stimulation probe kit according to claim 1, characterized in that: A rectangular limiting piece is provided on the electrode connecting line at the head end of the connecting cable, a matching rib is fixed at the tail end of the handle gripping part, and the rectangular limiting piece is fixed in the matching rib.

4. The universal electrical stimulation probe kit according to claim 1, characterized in that: Positive and negative pole indication marks are respectively provided on the top of the handle mounting portion and directly above the connector fixing assembly.

5. The universal electrical stimulation probe kit according to claim 4, characterized in that: The marks on both sides of the top of the handle mounting portion are positive pole indication marks, and the mark in the middle is a negative pole indication mark; The tail ends of the pins representing the positive poles on both sides are welded to the red electrode connecting wires at the head end of the connecting cable through welding holes, and the red electrode connecting wires at the tail end of the connecting cable are connected to a red socket. The tail ends of the pins representing the negative poles in the middle are welded to the black electrode connecting wires at the head end of the connecting cable through welding holes, and the black electrode connecting wires at the tail end of the connecting cable are connected to a black socket.

6. The universal electrical stimulation probe kit according to claim 1, characterized in that: The handle housing comprises a handle upper shell and a handle lower shell from top to bottom, a mounting plate is fixed at the front end of the handle mounting portion of the handle lower shell, and a limiting plate is fixed at intervals along the longitudinal direction at the rear end of the handle mounting portion of the handle lower shell.

7. The universal electrical stimulation probe kit according to claim 1, characterized in that: Each of the limiting surfaces is a rubber-coated limiting surface, and the surface of each of the plug pins has a hob cut pattern. A plug pin is placed in each of the rubber-coated limiting surfaces and is glued to the hob cut pattern of the plug pin.

8. The universal electrical stimulation probe kit according to claim 1, characterized in that: The portion of the connecting cable located outside the universal handle is bundled with a cable tie.

9. The universal electrical stimulation probe kit according to claim 1, characterized in that: The protective sleeve is interference fitted with the matching surface of the bushing.

10. The universal electrical stimulation probe kit according to claim 1, characterized in that: A wedge-shaped surface is provided at the tail end of each of the plug pins, and a welding hole is provided on each of the wedge-shaped surfaces.

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