KR102139295B1 - Wireless nerve block needle set - Google Patents

Abstract

Regarding a set of wireless nerve block needles, an electronic circuit that generates a current that is a target of a nerve block based on a signal wirelessly received from a remote controller, a stylus cap with a built-in battery, and a shear on one side of the stylus cap The combined and conductive stylus, the cannula-shaped cannula hub which can be equipped with a stylus cap at the entrance after the stylus has passed, and a structure in communication with the inner passage of the cannula hub, with the shear coupled to the outlet of the cannula hub It includes a hollow needle-shaped cannula, and electric current is applied to the target nerve from the rear end of the stylus exposed on the rear end side of the cannula, so that an electrical procedure for the target nerve can be performed in a short time at an accurate nerve position. have.

Description

Wireless nerve block needle set {Wireless nerve block needle set}

It relates to a set of neural block needles used in neural block therapy, and more particularly, to a set of neural block needles for applying a current to a target nerve.

Nerve block therapy is a therapy that blocks nerves that cause pain and injects drugs into the target nerve or physically heats, cools, or compresses, blocking the nerves. Examples of neuroblock therapy include a therapy in which an operator locally administers an anesthetic agent to a target nerve to be treated, a radiofrequency heat coagulation therapy that solidifies a target nerve using a high frequency current, a frozen block therapy that freezes a target nerve, and a block needle. And puncture compression therapy. Among these neural block therapies, high-frequency thermal coagulation therapy is a method of generating heat in the tissues of the target nerve by coagulating high-frequency current through the end of the needle to the target nerve, thereby coagulating the target nerve. Not only can the pain be minimized, but serious side effects rarely occur, which has attracted attention recently.

In order to increase the patient's satisfaction with the procedure and to increase the success rate of the treatment, the high-frequency thermal coagulation therapy needs to accurately and quickly locate the target nerve. According to the conventional high-frequency thermal coagulation therapy, the current generator for generating the current applied to the target nerve and the needle set for applying the current to the target nerve are connected by wires. Due to the interference, it is difficult to precisely operate the needle set, and there is a problem in that it takes a long time to complete the procedure because the procedure needs to be performed while continuously controlling the wire.

By allowing precise adjustment of the posterior position of the cannula without interference of the electric wires connecting the current generator and the needle set, electric surgery on the target nerve is possible within a short time at the correct nerve location, and patient satisfaction and procedure of the target nerve The aim is to provide a set of wireless neural block needles that can significantly improve the success rate. It is not limited to the technical problems as described above, and another technical problem may be derived from the following description.

The wireless nerve block needle set according to the present invention includes an electronic circuit that generates a current for applying to a target nerve that is a target of a nerve block based on a signal wirelessly received from a remote controller; A battery that supplies power to the electronic circuit; A stylet cap in which the electronic circuit and the battery are built; A stylus in which a front end is coupled to one side of the stylus cap with a conductive needle and a rear end is inserted into the human body to apply a current generated by the electronic circuit to the target nerve; A cannular hub having a cylindrical tube shape through which the stylet cap can be mounted at the entrance after the stylet passes through the internal passage in the direction of the entrance to the exit; And a cannula formed in the shape of a hollow needle having an inner diameter through which the stylus can pass and communicating with the inner passage of the cannula hub, the front end being coupled to the outlet of the cannula hub.

The stylus is placed inside the cannula, the cannula is inserted into the human body, and the stylus cap is mounted at the entrance of the cannula hub so that the rear end of the stylus is exposed from the rear end of the cannula. In the current is applied to the target nerve from the rear end of the stylet exposed on the rear end side of the cannula.

The electronic circuit generates a current having a frequency indicated by the frequency information included in the signal wirelessly received from the remote controller, and the target nerve reacts or the target by the current applied to the target nerve according to the frequency of the current The tissue of the nerve may heat coagulate.

The electronic circuit includes a receiver for wirelessly receiving a signal including frequency information of the current from the remote controller; A control unit extracting frequency information of the current from the signal received by the reception unit; And a pulse converter generating a current having a frequency indicated by the frequency information extracted by the control unit under the control of the control unit.

The signal further includes voltage magnitude information of the current, and the controller extracts voltage magnitude information and frequency information of the current from the signal received by the receiver, and the wireless neural block needle set is controlled by the controller. The pulse converter further includes at least one digital variable resistor that outputs a current having a voltage level indicated by the extracted voltage magnitude information by adjusting the voltage magnitude of the current output from the battery by changing the resistance value according to A pulse current having a frequency indicated by the extracted frequency information may be generated by modulating a current output from the at least one digital variable resistor according to the frequency information extracted by the control unit.

The wireless neural block needle set further includes a voltage detector that detects a voltage of a current flowing through the pulse converter, and the controller monitors the voltage magnitude detected by the voltage detector while monitoring the voltage magnitude detected by the voltage detector. The resistance value of the at least one digital variable resistor may be adjusted to converge to the voltage magnitude indicated by the voltage magnitude information of the extracted current.

The signal further includes current magnitude information of the current, and the controller extracts voltage magnitude information, current magnitude information, and frequency information of the current from the signal received by the receiver, and the at least one digital variable resistor Outputs a current having a voltage magnitude and a current magnitude indicated by the extracted voltage magnitude information and current magnitude information by adjusting the voltage magnitude and current magnitude of the current output from the battery by changing the resistance value under the control of the controller. Can.

The at least one digital variable resistor is a first digital variable resistor connected to the pulse converter, the current output from the battery flows in the input terminal; And an input terminal connected to an input terminal of the first digital variable resistance and an output terminal connected to a ground of the electronic circuit, wherein the first digital variable resistance and the second digital variable resistance are the By adjusting the voltage magnitude and current magnitude of the current output from the battery by changing the resistance value under the control of the control unit, the first digital variable resistance is used to determine the voltage magnitude and current magnitude indicated by the extracted voltage magnitude information and current magnitude information. It can output the current it has to the pulse converter.

The wireless neural block needle set is connected in parallel between the input terminal and the output terminal of the first digital variable resistor to detect a voltage level of a current flowing in the pulse converter; And a current detector connected between the first digital variable resistance and the pulse converter to detect the current magnitude of the current flowing through the pulse converter, wherein the control unit includes the voltage magnitude and the current detected by the voltage detector. While monitoring the current magnitude detected by the detector, the voltage magnitude detected by the voltage detector and the current magnitude detected by the current detector correspond to the voltage magnitude and current magnitude indicated by the voltage magnitude information and the current magnitude information of the extracted current. The resistance value of the first digital variable resistance and the resistance value of the second digital variable resistance can be adjusted to converge.

The signal further includes duration information of the current, and the controller extracts voltage size information, current size information, frequency information, and duration information of the current from the signal received by the receiver, and the wireless The type neural block needle set further includes a transistor that allows or blocks the current output from the battery to flow into the at least one digital variable resistor based on the duration indicated by the extracted duration information under the control of the controller. Can.

After the stylus cap and stylus are removed from the cannula hub and the cannula by an operator recognizing the reaction of the target nerve, a syringe is inserted into the cannula hub, and the syringe is inserted into the target nerve through the syringe. Drugs can be injected.

The stylus cap is formed in a spherical shape having a cone-shaped protrusion on one side, and the wireless nerve block needle set is installed to expose a switch operation portion to an opening formed on the cone-shaped protrusion of the stylus cap, and is electronically installed from the battery. A switch for turning on/off the power supply to the circuit may be further included.

Based on the signal received wirelessly from the remote controller, the electronic circuit that generates the current that is the target of the nerve block, the stylus cap with built-in battery, and the shear are combined on one side of the stylus cap, and the conductive stylus and stylus pass through After the stylus cap can be mounted on the entrance, a cylindrical cannula hub and a hollow needle-shaped cannula whose front end is coupled to the outlet of the cannula hub in a structure that communicates with the inner passage of the cannula hub. By using a set of neural block needles, electric current is applied to the target nerve from the rear end of the stylus exposed on the rear end side of the cannula, so that the electrical procedure for the target nerve can be performed in a short time at the correct nerve position.

Conventionally, as the current generator that generates the current applied to the target nerve and the needle set for applying the current to the target nerve are connected by wires, the precision of the needle set is caused by the interference between the current generator and the wire connecting the needle set. Not only was it difficult to manipulate, but the procedure had to be controlled while continuously controlling the front, so there was a problem that it took a long time to complete the procedure. The wireless nerve block needle set according to the present invention is conventional as the operator operates the needle set with one hand and the remote controller with the other hand as the part generating the current and the needle set are miniaturized and integrated. Since the position of the posterior end of the cannula can be precisely adjusted without wire interference, electric surgery on the target nerve can be performed within a short time at the correct nerve position, thereby significantly improving patient satisfaction and the success rate of the target nerve.

The electronic circuit generates a current having a frequency indicated by the frequency information included in the signal wirelessly received from the remote controller, and the target nerve reacts or the tissue of the target nerve is opened by the current applied to the target nerve according to the frequency of the current. A multi-purpose wireless neuron block needle set that enables drug treatment to be performed within a short period of time in addition to thermal coagulation for the target nerve while manipulating the needle set with one hand and the remote control with the other hand as it can be coagulated. Can be provided. It is not limited to the above-described effects, and other effects may be derived from the following description.

1-2 is a view showing a wireless neural block needle set 1 and a remote controller 2 according to an embodiment of the present invention.
FIG. 3 is a view illustrating a state in which the wireless nerve block needle set 1 shown in FIG. 1 is separated.
4 is a configuration diagram of the electronic circuit 11 of the wireless nerve block needle set 1 shown in FIG. 1.
5-6 is a diagram illustrating procedures of the wireless neural block needle set 1 shown in FIGS. 1-4.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiment of the present invention described below enables precise adjustment of the posterior position of the cannula without interference of the electric wires connecting the current generator and the needle set, thereby enabling the electrical procedure for the target nerve to be performed at the correct nerve location within a short time. It relates to a set of wireless neural block needles that can significantly improve the patient's surgical satisfaction and the target nerve's success rate. Hereinafter, such a wireless nerve block needle set may be simply referred to as a "needle set", and the target nerve to be operated by the operator will be referred to as a "target nerve" briefly.

1-2 is a diagram illustrating a wireless neural block needle set 1 and a remote controller 2 according to an embodiment of the present invention, and FIG. 3 is a wireless neural block needle set 1 shown in FIG. 1 ), and FIG. 4 is a configuration diagram of the electronic circuit 11 of the wireless nerve block needle set 1 shown in FIG. 1. 1-4, the wireless neural block needle set 1 according to the present embodiment includes an electronic circuit 11, a battery 12, a battery connector 13, a switch 14, and a stylus cap 15 , Stylus 16, cannula hub 17, and cannula 18. In FIG. 1, a needle set 1 in a state in which a stylus cap 15 is mounted at an entrance of a cannula hub 17 is shown, and in FIG. 2, a gap between the cannula hub 17 and the stylus cap 15 is opened. The needle set 1 in the state is shown. In FIG. 3(a), a stylus cap 15 and a stylus 16 are shown, and in FIG. 3(b), a cannula hub 17 and a cannula 18 are shown.

The electronic circuit 11 is built in the stylus cap 15, and generates a current for applying to a target nerve corresponding to a target of a neural block based on a signal wirelessly received from the remote controller 2. According to this embodiment, the signal received wirelessly from the remote controller 2 includes voltage magnitude information, current magnitude information, frequency information, and duration information of a current to be applied to the target nerve. The electronic circuit 11 generates a current having a frequency indicated by frequency information included in a signal received wirelessly from the remote controller 2, a voltage level indicated by voltage size information, and a current size indicated by current size information, and The generated current is output to the stylet 16 according to the duration indicated by the duration information.

The battery 12 is embedded in the stylus cap 15 together with the electronic circuit 11 and supplies power to the electronic circuit 11. As described below, the stylus cap 15 is sized to be held in the palm of the operator so that the operator can precisely adjust the rear end position of the cannula 18. In addition to the battery 12, an electronic circuit 11 is embedded in the small stylus cap 15, so the size of the battery 12 should be very small. A lithium ion micro battery may be used as the battery 12. The power supplied from the battery 12 to the electronic circuit 11 is used for driving the electronic circuit 11 and generating a current for applying to the target nerve. The battery 12 is connected in parallel to the switch 14 and the battery connector 13. The battery connector 13 may be connected to a separate charger (not shown) in a state where the electrical connection between the battery 12 and the electronic circuit 11 is broken by the operator's switch operation. At this time, the battery 12 may be charged using the power supplied through the charger.

The stylus cap 15 is formed in a spherical shape having a conical shaped protrusion on one side, in which an electronic circuit 11 and a battery 12 are embedded. The stylet cap 15 may be made of an insulating high-strength synthetic resin material. At the end of the cylindrical protruding portion of the stylus cap 15, a front end of the stylus 16 is fitted and a hole having a size that can be fixed is formed. The stylus cap 15 is a spherical shape of a size that can be held in one hand of the operator so that the operator can easily operate the stylus 16 using only one hand. have. Accordingly, even when the operator is wearing surgical gloves made of slippery material such as silicone, the operator can finely adjust the rear end position of the stylus 16 while holding the stylus cap 15 in one hand.

A rectangular opening is formed in the cylindrical protrusion of the stylus cap 15, and the switch 14 for turning on/off the power supply from the battery 12 to the electronic circuit 11 is exposed so that the switch operation portion is exposed. It is installed in the opening. The operation part of the switch 14 is exposed to the outside of the stylus cap 15, and the wiring part is installed in the opening of the stylus cap 15 to be located therein. 4, the switch 14 is connected between the battery 12 and the electronic circuit 11 to turn on and off the power supply from the battery 12 to the electronic circuit 11 according to the operator's operation. The operator can operate the switch 14 with the thumb while holding the stylus cap 15 with one hand and simultaneously operate the remote controller 2 with the other hand. For example, in the case where the operator is right-handed, the operator turns off the switch 14 with the right hand and operates the remote controller 2 with the left hand, thereby various kinds of currents to be applied to the target nerve from the rear end of the stylus 16. Information can be entered. Thereafter, the operator can apply the desired current to the target nerve desired by the operator by turning on the switch 14 while adjusting the rear end position of the stylus 16 with the right hand.

The stylus 16 is a conductive needle, the proximal end of which is coupled to one side of the stylus cap 15, and the distal end thereof is inserted into the human body to target the current generated by the electronic circuit 11 Apply to nerves. The front end of the stylus 16 is fitted and fixed to the end hole of the cylindrical protrusion of the stylus cap 15, and is electrically connected to the electronic circuit 11 inside the stylus cap 15. As described above, the stylus 16 is a conductive needle for applying the current generated by the electronic circuit 11 to the target nerve. The rear end of the stylus 16 is a region that comes into contact with the target nerve, and if sharply formed like a normal injection needle, the tissue of the target nerve may be damaged. In order to prevent tissue damage to the target nerve, the rear end of the stylet 16 is bluntly formed, unlike a general needle. The stylet 16 is preferably made of a conductive high-strength metal material, for example, brass. The surface of the stylus 16 is coated with an insulating material, except for the rear end of the stylus 16, so that the current flowing through the stylus 16 flows accurately only to the target nerve side.

The cannula hub 17 is formed in the shape of a cylindrical tube having a size to which the stylus cap 15 can be mounted at its mouth after the stylus 16 passes through its inner passageway from the inlet to the outlet. The outlet of the cannula hub 17 is formed in a size that can be fixed by fitting the front end of the cannula 18, and the inlet of the cannula hub 17 is a size in which the stylus cap 15 can be mounted. It is formed of. According to the present embodiment, the spout of the syringe may be mounted in addition to the stylus cap 15 at the entrance of the cannula hub 17. The inner passage of the cannula hub 17 is formed in a shape that gradually decreases from the front end to the rear end so that the drug discharged from the needle of the syringe mounted on the front end can be smoothly delivered to the front end of the cannula 18. Can be. With the spout of the syringe mounted on the front end of the cannula hub 17, the needle of the syringe may be located in the inner passage of the cannula hub 17 depending on its length or may be located at the front end portion of the cannula 18. It might be.

When the operator wishes to apply electrical stimulation to the target nerve, the wireless nerve block needle set of the present embodiment is used while the stylus cap 15 is mounted on the entrance of the cannula hub 17, and the drug is injected into the target nerve. When intending to use the wireless neural block needle set of this embodiment with the spout of the syringe mounted at the entrance of the cannula hub 17. Since the nerves of the human body are very thin as hair, precise positioning of the cannula 18 with respect to the rear end of the cannula 18 is required so that the rear end of the cannula 18 accurately reaches the target nerve to be treated. The surface of the cannula hub 17 is concave to allow the operator to precisely adjust the rear end position of the cannula 18. The operator presses the tip of the thumb and index finger on the concave surface of the cannula hub 17 while the stylus cap 15 is wrapped with the palm, thereby using the sensation of the thumb and index finger to position the rear end of the cannula 18. It can be precisely adjusted.

The cannula 18 is formed in the shape of a hollow needle having an inner diameter through which the stylus 16 can pass, and has a structure in communication with the inner passage of the cannula hub 17, the front end of which is the outlet of the cannula hub 17 Is coupled to. The front end of the cannula 18 is fitted and fixed to the outlet of the cannula hub 17. The outlet of the cannula hub (17) has a sufficient depth to the point leading to its internal passage so that the front end of the cannula (18) is fitted to the outlet of the cannula hub (17). The stylet 16 is preferably made of a corrosion-resistant high-strength metal material, for example, stainless steel. The cannula (18) is a length at which the rear end of the stylus (16), approximately 1 to 5 mm, is exposed from the rear end of the cannula (18) while the stylus cap (15) is mounted at the entrance of the cannula hub (17). It is made of. Unlike the rear end of the stylus 16, the rear end of the cannula 18 is sharply formed and serves to penetrate the human skin tissue. When the skin is perforated, the wireless nerve block needle set according to the present embodiment has a slight stylus cap 15 from the entrance of the cannula hub 17 so that the rear end of the stylus 16 is hidden in the cannula 18. Used in a spaced state. If the entire surface of the cannula 18 is coated with an insulating material, the coating of the insulating material on the stylus 16 may be omitted.

4, the electronic circuit 11 includes a receiver 111, a controller 112, a fixed resistor 113, a transistor 114, two digital variable resistors 115, 116, a voltage detector 117, It is composed of a current detector 118 and a pulse converter 119. The higher the temperature of the tissue of the target nerve by the high-frequency current, the smoother the solidification of the tissue of the target nerve. If the temperature of the tissue of the target nerve is too high, it can cause nerve destruction and patient pain. The maximum voltage that can be applied to the tissues of the target nerve is known to be 45V as long as it does not cause nerve destruction and patient pain. In order to thermally solidify the tissue of the target nerve according to the continuity of the current applied to the target nerve and the type of the target nerve, it is preferable that the voltage of the current applied to the target nerve is distributed within a range of 15 to 45V. When the voltage of the battery 12 is not sufficient for tissue thermal coagulation of the target nerve, the electronic circuit 11 further adds a boosting circuit that increases the voltage of the battery 12 between the switch 14 and the fixed resistor 113. It can contain.

The receiver 111 wirelessly receives a signal including voltage magnitude information, current magnitude information, frequency information, and duration information of current for applying to the target nerve from the remote controller 2. For example, the receiver 111 may receive such a signal from the remote controller 2 through a low-power wireless network such as Bluetooth, Zigbee, and the like. The operator operates the knob, button, or the like of the remote controller 2 as shown in FIGS. 1 and 2, current magnitude information, voltage magnitude information, frequency information, and current of the current to be applied to the target nerve to the remote controller 2 Duration information can be entered. The current magnitude information and the voltage magnitude information may indicate one current magnitude and voltage magnitude as an RMS (Root Mean Square) value or amplitude of AC, or may indicate a plurality of current magnitudes and voltage magnitudes. The frequency information is distributed over a wide range from several Hz to several hundred KHz. The duration information may indicate a continuous mode without a specific duration, or may indicate one or more durations.

The controller 112 extracts voltage magnitude information, current magnitude information, frequency information, and duration information of current for application to the target nerve from the signal received by the receiver 111. The control unit 112 controls the switching of the transistor 114 according to the extracted duration information. In addition, the control unit 112 controls the resistance value of the first digital variable resistor 115 and the resistance value of the second digital variable resistor 116 according to the current magnitude information and voltage magnitude information of the extracted current. In addition, the control unit 112 controls modulation of the pulse converter 119 according to the frequency information of the extracted current.

One of the two terminals of the switch 14 is connected to the positive electrode of the battery 12 and the other is connected to the input terminal of the fixed resistor 113. The negative electrode of the battery 12 is connected to the ground of the electronic circuit 11. Stylus in a state in which the ground of the electronic circuit 11 is electrically connected to the human body by using a wire or the like extending from the ground of the electronic circuit 11 so that the current generated by the electronic circuit 11 can flow in the human body. Let (16) penetrate the human body. The base terminal of the transistor 114 is connected to the control unit 112, and the collector terminal is connected to the output terminal of the fixed resistor 113. The three terminals of the first digital variable resistor 115 and the second digital variable resistor 116 are divided into input terminals, output terminals, and control terminals. The input terminal of the first digital variable resistor 115 and the input terminal of the second digital variable resistor 116 are connected to each other and connected to the emitter terminal of the transistor 114. The current output from the emitter terminal of the transistor 114, that is, the current output from the battery 12 is branched and flows into the input terminals of the first digital variable resistor 115 and the second digital variable resistor 116.

The transistor 114 has its base terminal connected to the control unit 112 so that the current output from the battery 12 is removed based on the duration indicated by the duration information extracted by the control unit 112 under the control of the control unit 112. Allow or block the flow into the 1 digital variable resistor 115 and the 2nd digital variable resistor 116. When a signal having a voltage equal to or higher than a threshold voltage corresponding to switching on is input from the controller 112 to the base terminal of the transistor 114, the current output from the battery 12 is the first digital variable resistor 115 and the second digital. When it is allowed to flow into the variable resistor 116 and no signal is input from the control unit 112 to the base terminal or a signal having a voltage below the threshold voltage is input, the current output from the battery 12 is first The digital variable resistor 115 and the second digital variable resistor 116 are prevented from flowing into the digital variable resistor 115.

For example, if the duration information of the current indicates a continuous mode in which the current continuously flows, the transistor 114 may output the current output from the battery 12 from the time the switch 14 is turned on by the operator to the off. The digital variable resistor 115 and the second digital variable resistor 116 are allowed to flow therein. When the duration information of the current represents a single duration of 60 seconds, the transistor 114 outputs the first digital variable resistance 115 and the current output from the battery 12 for 60 seconds from the time the switch 14 is turned on by the operator. 2 Let it flow into the digital variable resistor (116). When the duration information of the current shows a repetition of a 20 ms duration for a 50 KHz frequency and a 480 ms duration for a 2 Hz frequency, the transistor 114 is output from the battery 12 until the switch 14 is turned on by the operator until it is turned off. The current flows into the first digital variable resistor 115 and the second digital variable resistor 116.

The output terminal of the first digital variable resistor 115 is connected to the pulse converter 119, and the output terminal of the second digital variable resistor 116 is connected to the ground of the electronic circuit 11. The control terminal of the first digital variable resistor 115 and the control terminal of the second digital variable resistor 116 are connected to the control unit 112. The two detection terminals of the voltage detector 117 are connected in parallel between the input terminal and the output terminal of the first digital variable resistor 115, and the output terminal is connected to the control unit 112. Two detection terminals of the current detector 118 are connected in series between the first digital variable resistor 115 and the pulse converter 119, and the output terminal is connected to the control unit 112. The output voltage of the battery 12 is adjusted according to the ratio of the total resistance value of the first digital variable resistor 115 and the second digital variable resistor 116 to the resistance value of the fixed resistor 113 and the pulse converter 119 Can be entered as The output current of the battery 12 may be adjusted according to a ratio of resistance values between the first digital variable resistor 115 and the second digital variable resistor 116 and input to the pulse converter 119.

The first digital variable resistor 115 and the second digital variable resistor 116 are output from the battery 12 by changing the resistance value under the control of the control unit 112 by connecting their respective control terminals to the control unit 112. The first digital variable resistor 115 outputs a current having a voltage magnitude and a current magnitude indicated by the voltage magnitude information and the current magnitude information extracted by the controller 112 by adjusting the voltage magnitude and the current magnitude of the current. In order to further reduce the electronic circuit 11, the electronic circuit 11 may adjust only the voltage level of the current output from the battery 12. In this case, the second digital variable resistor 116 may be omitted from the electronic circuit 11 shown in FIG. 4. The main factors that determine the temperature of the target nerve tissue due to the high-frequency current include the voltage, current, frequency of the high-frequency current applied to the target nerve, and heat conduction to the surrounding tissue and heat loss through thermal circulation. Among these factors, the voltage and frequency of the high frequency current applied to the target nerve have the greatest influence on the temperature rise of the tissue of the target nerve.

The voltage detector 117 is connected to the two detection terminals in parallel between the input terminal and the output terminal of the first digital variable resistor 115 to the voltage across the first digital variable resistor 115, that is, the pulse converter 119 The voltage of the flowing current is detected. In consideration of almost no resistance of each of the current detector 118 and the pulse converter 119, the voltage across the first digital variable resistor 115 becomes a voltage output to the stylus 16. The current detector 118 is connected to the two detection terminals in series between the first digital variable resistor 115 and the pulse converter 119 to detect the current magnitude of the current flowing in the pulse converter 119.

The controller 112 monitors the current magnitude detected by the current detector 118 and the voltage magnitude detected by the voltage detector 117 while the current magnitude and voltage detector 117 detected by the current detector 118 are monitored. The resistance value of the first digital variable resistor 115 and the second so that the detected voltage magnitude converges to the current magnitude and voltage magnitude indicated by the current magnitude information and the voltage magnitude information of the current extracted from the signal received by the receiver 111. The resistance value of the digital variable resistor 116 is adjusted. For example, the control unit 112 may converge the first digital variable resistor 115 so that the voltage magnitude detected by the voltage detector 117 converges to the voltage magnitude indicated by the voltage magnitude information extracted from the signal received by the receiver 111. ), starting from the resistance intermediate value of the second digital variable resistor 116 and increasing the resistance value of the first digital variable resistor 115 and the resistance value of the second digital variable resistor 116 equally. In a decreasing manner, the resistance value of the first digital variable resistor 115 and the resistance value of the second digital variable resistor 116 are adjusted.

Subsequently, the control unit 112 is operated by the voltage detector 117 in a state where the voltage level detected by the current detector 118 converges to the voltage level indicated by the voltage level information extracted from the signal received by the receiver 111. The resistance value of the first digital variable resistor 115 and the resistance value of the second digital variable resistor 116 so that the detected current magnitude converges to the current magnitude indicated by the current magnitude information extracted from the signal received by the receiver 111. The resistance values of the first digital variable resistor 115 and the resistance values of the second digital variable resistor 116 are adjusted in such a way that they decrease while increasing opposite to each other. For example, the control unit 112 may decrease the resistance value of the second digital variable resistance 116 while increasing the resistance value of the first digital variable resistance 115, and the resistance of the first digital variable resistance 115 The resistance value of the second digital variable resistor 116 may be increased while decreasing the value. Here, convergence to the voltage magnitude or current magnitude means that the voltage magnitude or current magnitude is matched or approximated.

The pulse converter 119 modulates the current output from the first digital variable resistor 115 under the control of the control unit 112 to generate a current having a frequency indicated by the frequency information extracted by the control unit 112 to generate the style. Output to the lot 16. Since the current output from the battery 12 is direct current, the current output from the first digital variable resistor 115 also becomes direct current. The pulse converter 119 modulates the direct current output from the first digital variable resistor 115 to generate a current having a frequency indicated by the frequency information extracted by the control unit 112 and outputs it to the stylus 16. The current generated by the pulse converter 119 may be a sinusoidal pulse current or a square wave pulse current. In the neural block procedure using high-frequency current, it is known that when the high-frequency current is a sinusoidal pulse current known as a general alternating current type, the frictional heat generated by the high-frequency current flowing through the nerve tissue is high, thereby effectively raising the temperature of the nerve tissue. .

As described above, the electronic circuit 11 according to the present embodiment uses the very simple structure of the electronic circuit to apply voltage magnitude information, current magnitude information, frequency information of current to be applied to the target nerve from the remote control unit 112, And a signal including duration information wirelessly, a voltage magnitude indicated by voltage magnitude information included in a signal wirelessly received from the remote control unit 112, a current magnitude indicated by current magnitude information, and a frequency indicated by frequency information. It is possible to generate the current to have and apply the generated current to the target nerve through the rear end of the stylus 16 based on the duration information. That is, as the electronic circuit 11 according to the present embodiment can be miniaturized to the extent that it can be embedded in the stylus cap 15, the target nerve reacts by the current applied to the target nerve according to the frequency of the current applied to the target nerve. Or, it is possible to implement a wireless neural block needle set 1 capable of thermally coagulating the tissue of the target nerve.

FIG. 5 is a diagram showing an example of the procedure of the wireless nerve block needle set 1 shown in FIGS. 1-4. In the following, it is assumed that the operator is right-handed, and an example of the procedure of the wireless nerve block needle set 1 will be described. If the operator is left-handed, the right and left hands in the description below are interchanged. The operator adjusts the rear end position of the stylus 16 while holding the stylus cap 15 with the right hand, and then positions the rear end of the stylus 16 in the center of the entrance of the cannula hub 17, and then the cannula hub ( 17) Push the stylus (16) into the cannula hub (17) until the stylus cap (15) is mounted. Subsequently, the operator wraps the stylus cap 15 with the palm of the right hand, squeezes the tip of the thumb and index finger to the surface of the cannula hub 17, and places the thumb and index finger straight into the cannula 18, the upper layer of the target nerve. Poke into the skin tissue corresponding to.

When the operator straightens the thumb and index finger, the stylus cap 15 is slightly spaced from the entrance of the cannula hub 17 so that the rear end of the stylus 16 is hidden inside the cannula 18, and the operator thumb When the and the index finger are slightly bent, the stylus cap 15 is closely mounted to the entrance of the cannula hub 17, so that the rear end of the stylus 16 is exposed from the rear end of the cannula 18. According to this embodiment, the operator wraps the stylus cap 15 with the palm of the right hand, and a structure capable of squeezing the tip of the thumb and index finger on the surface of the cannula hub 17 and the style at the entrance of the cannula hub 17 With the structure in which the rear end of the stylus 16 is exposed from the rear end of the cannula 18 in a state where the rot cap 15 is mounted, the rear end of the stylus 16 is easily moved only by an operation in which the operator lifts and bends the thumb and index finger. It can be hidden or exposed inside the cannula 18. As a result, the rear end of the stylus 16 during perforation of the skin and the rear end of the stylus 16 for preventing nerve damage caused by the rear end of the cannula 18 can be easily switched, so that the convenience and accuracy of the procedure can be easily switched. Not only can it be greatly improved, but also can be instantaneously switched from the rear end of the stylus 16 to the hidden state, so that it is possible to temporarily stop the current input to the target nerve in case of emergency.

Subsequently, when the operator determines that the cannula 18 penetrates the skin tissue, the thumb and index finger are slightly bent to close the stylus cap 15 at the entrance of the cannula hub 17 to close the stylus 16 at the rear end. The rear end of the cannula 18, that is, the rear end of the stylus 16, will reach the target nerve or near it while precisely adjusting the rear end position of the cannula 18 while exposed to the rear end side of the cannula 18. Until the cannula (18) is inserted deeper into the human body. Subsequently, when it is determined that the rear end of the stylus 16 has reached or near the target nerve, the operator operates the remote controller 2 to determine whether the rear end of the stylus 16 has accurately reached the target nerve. Input voltage size information, current size information, frequency information, and duration information to the remote controller 2 and press a button instructing the transmission of current information.

At this time, when the user turns on the switch 14 using the thumb, the receiver 111 of the electronic circuit 11 receives the voltage magnitude information, current magnitude information, frequency information, and duration information input by the user, A current corresponding to this information is output from the rear end of the stylet 16 and flows into the nerve tissue. For example, when the operator inputs the voltage size information of 2V, the current size information of 0.2mA, the frequency information of 50Hz, and the duration information of the continuous mode to the remote controller 2, the rear end of the stylus 16 is in pain. When located within 1 cm of the target nerve, the trigger point, the tissue of the target nerve responds to the patient's sense of abnormality. The operator observes the patient's abnormal sensation while gradually lowering the voltage to 0.5V through the operation of the remote controller 2. When the patient feels abnormal at 0.5V, the rear end of the stylus 16 can be considered to be accurately positioned within a radius of 3mm from the target nerve.

The coagulation of the motor nerve should be avoided in the treatment of pain using high-frequency thermal coagulation, so it should be confirmed that the motor is not near the target nerve corresponding to the sensory nerve. To confirm this, the operator inputs 2V voltage magnitude information, 0.2mA current magnitude information, 2Hz frequency, and continuous mode duration information to the remote controller 2 and corresponds to this information from the rear end of the stylus 16. While outputting the current to be output, watch the reaction of the tissue where the rear end of the stylus 16 is located. If the electrical stimulation of 2V does not cause muscle contraction of the tissue where the rear end of the stylus 16 is located, it can be seen that the motor nerve does not exist within a radius of 3 mm from the rear end of the stylus 16.

Subsequently, the operator inputs voltage information of 20V, current size information of 0.3mA, frequency information of 50KHz and 2Hz, and duration information of repeating 20ms and 480ms to the remote controller 2 in order to thermally coagulate the target nerve, and the stylet ( The current corresponding to this information is output from the rear end of 16). Accordingly, after a current of 50KHz is applied to the target nerve for 20ms, a current of 2Hz is applied for 480ms, and a current of 50KHz is applied for 20ms, and then a current of 2Hz is applied for 480ms. The application of this current is repeated until switch 14 is turned off. The operator can turn off the switch 14 when confirming the thermal coagulation of the target nerve through the imaging equipment. Even if the tissue temperature of the target nerve is increased by a current of 50 KHz for 20 ms, nerve destruction and patient pain can be blocked by heat conduction and heat circulation for 480 ms.

Conventionally, as the current generator that generates the current applied to the target nerve and the needle set for applying the current to the target nerve are connected by wires, the precision of the needle set is caused by the interference between the current generator and the wire connecting the needle set. Not only was it difficult to manipulate, but the procedure had to be controlled while continuously controlling the front, so there was a problem that it took a long time to complete the procedure. As described above, according to the present embodiment, the cannula 18 is inserted into the human body while the stylus 16 is accommodated inside the cannula 18, and the rear end of the stylus 16 is the cannula 18 Current is applied to the target nerve from the rear end of the stylus 16 exposed on the rear end side of the cannula 18 while the stylus cap 15 is mounted at the entrance of the cannula hub 17 so as to be exposed from the rear end of the cannula 18 Can.

The wireless nerve block needle set 1 according to the present embodiment is operated by the operator operating the needle set 1 with one hand and the other hand as the part generating the electric current and the needle set are miniaturized into an integral set. Since it is possible to precisely adjust the rear end position of the cannula 18 without wire interference as in the prior art while operating the remote controller 2, the rear end of the cannula 18 can be quickly and accurately located in the target nerve. As described above, the sharp rear end of the cannula 18 is used to perforate the skin of the human body, and the rear end of the stylus 16 is exposed to only about 1 to 5 mm required for the emission of high-frequency currents, thereby styling the target nerve 16 ) When the rear end of the cannula 18 is accurately positioned, the rear end of the cannula 18 is also accurately positioned in the target nerve. As a result, the thermal coagulation procedure for the target nerve can be performed within a short time in an accurate nerve position, thereby significantly improving the patient's procedure satisfaction and the success rate of the target nerve procedure.

6 is a view showing another example of the procedure of the wireless nerve block needle set 1 shown in FIGS. 1-4. As described above, when the target nerve shows a reaction such as a patient's abnormal sensation when an electrical stimulus is applied while gradually lowering the voltage to 5 to 0.5 V to the target nerve, the stylus 16 corresponding to the point of occurrence of the electrical stimulation 16 The rear end of the can be considered to be accurately located within a radius of 3 mm from the target nerve. As described above, a drug for anesthesia or treatment may be accurately injected into the target nerve using the wireless nerve block needle set 1 located in the target nerve. As shown in Figure 6, the cannula hub after the removal of the stylus cap 15 and the stylus 16 from the cannula hub 17 and the cannula 18 by a practitioner who has recognized the response of the target nerve cannula hub ( The syringe 3 is inserted in 17). In that state, the drug may be injected into the target nerve through the syringe 3. In this way, in addition to the thermal coagulation procedure for the target nerve, a multi-purpose wireless neuron block needle set capable of performing a drug procedure in an accurate nerve location within a short time can be provided.

In the above, the present invention has been mainly focused on the various embodiments. Those skilled in the art to which the present invention pertains will appreciate that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in terms of explanation, not limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent range should be interpreted as being included in the present invention.

1 ... wireless nerve block needle set
11 ... electronic circuit
111 ... Receiver 112 ... Control
113 ... fixed resistor 114 ... transistor
115, 116 ... digital variable resistance 117 ... voltage detector
118 ... Current detector 119 ... Pulse converter
12 ... battery
13 ... Battery connector
14 ... switch
15 ... stylt cap
16 ... stylet
17 ... cannula hub
18 ... cannula
2 ... remote control
3 ... syringe

Claims (11)

An electronic circuit that generates a current for applying to a target nerve that is a target of a nerve block based on a signal wirelessly received from a remote controller;
A battery that supplies power to the electronic circuit;
A stylet cap in which the electronic circuit and the battery are built;
A stylus in which a front end is coupled to one side of the stylus cap with a conductive needle and a rear end is inserted into the human body to apply current generated by the electronic circuit to the target nerve;
A cannular hub having a cylindrical tube shape through which the stylet cap can be mounted at the entrance after the stylet passes through the internal passage in the direction of the entrance to the exit; And
The stylus is formed in a hollow needle shape having an inner diameter through which the stylus communicates with the inner passage of the cannula hub, and includes a cannula whose front end is coupled to the outlet of the cannula hub,
The stylus is placed inside the cannula, the cannula is inserted into the human body, and the stylus cap is mounted at the entrance of the cannula hub so that the rear end of the stylus is exposed from the rear end of the cannula. In, the current is applied to the target nerve from the rear end of the stylet exposed on the rear end side of the cannula,
The electronic circuit generates a current having a frequency indicated by the frequency information included in the signal wirelessly received from the remote controller,
Depending on the frequency of the current, the target nerve reacts or the tissue of the target nerve is thermally coagulated by the current applied to the target nerve,
The electronic circuit
A receiver for wirelessly receiving a signal including frequency information of the current from the remote controller;
A control unit extracting frequency information of the current from the signal received by the reception unit; And
And a pulse converter generating a current having a frequency indicated by the frequency information extracted by the control unit under the control of the control unit.
The signal further includes voltage magnitude information of the current,
The control unit extracts voltage magnitude information and frequency information of the current from the signal received by the receiving unit,
Further comprising at least one digital variable resistance for outputting a current having a voltage magnitude indicated by the extracted voltage magnitude information by adjusting the voltage magnitude of the current output from the battery by changing the resistance value under the control of the control unit,
The pulse converter modulates a current output from the at least one digital variable resistor according to the frequency information extracted by the controller to generate a pulse current having a frequency indicated by the extracted frequency information,
The signal further includes current magnitude information of the current,
The controller extracts voltage magnitude information, current magnitude information, and frequency information of the current from the signal received by the receiver,
The at least one digital variable resistance is the voltage magnitude and current indicated by the extracted voltage magnitude information and current magnitude information by adjusting the voltage magnitude and current magnitude of the current output from the battery by changing the resistance value under the control of the control unit. Output a current with a magnitude,
The at least one digital variable resistance is
A first digital variable resistor connected to the pulse converter through which current output from the battery flows into an input terminal; And
The input terminal is connected to the input terminal of the first digital variable resistor and the output terminal includes a second digital variable resistor connected to the ground of the electronic circuit,
The first digital variable resistance and the second digital variable resistance are obtained by adjusting the voltage magnitude and current magnitude of the current output from the battery by changing the resistance value under the control of the controller. A wireless neural block needle set comprising outputting a current having a voltage magnitude and a current magnitude indicated by voltage magnitude information and current magnitude information to the pulse converter. delete delete delete According to claim 1,
Further comprising a voltage detector for detecting the voltage of the current flowing into the pulse converter,
The control unit monitors the voltage magnitude detected by the voltage detector and sets the resistance value of the at least one digital variable resistance so that the voltage magnitude detected by the voltage detector converges to the voltage magnitude indicated by the voltage magnitude information of the extracted current. Wireless nerve block needle set characterized by adjusting. delete delete According to claim 1,
A voltage detector connected in parallel between the input terminal and the output terminal of the first digital variable resistor to detect a voltage level of a current flowing in the pulse converter; And
Further comprising a current detector connected between the first digital variable resistance and the pulse converter to detect the current magnitude of the current flowing in the pulse converter,
The control unit monitors the magnitude of the voltage detected by the voltage detector and the magnitude of the current detected by the current detector while monitoring the magnitude of the voltage detected by the voltage detector and the magnitude of the current detected by the current detector. A wireless neural block needle set characterized by adjusting the resistance value of the first digital variable resistance and the resistance value of the second digital variable resistance to converge to the voltage size and current size indicated by the voltage size information and the current size information. According to claim 1,
The signal further includes duration information of the current,
The controller extracts voltage magnitude information, current magnitude information, frequency information, and duration information of the current from the signal received by the receiver,
And a transistor configured to allow or block the current output from the battery to flow into the at least one digital variable resistor based on the duration indicated by the extracted duration information under the control of the control unit. Neural block needle set. According to claim 1,
After the stylus cap and stylus are removed from the cannula hub and the cannula by an operator recognizing the reaction of the target nerve, a syringe is inserted into the cannula hub, and the syringe is inserted into the target nerve through the syringe. Wireless nerve block needle set characterized in that the drug is injected. According to claim 1,
The stylus cap is formed in a spherical shape having a cone-shaped protrusion on one side,
Wireless neural block needle set, characterized in that it further comprises a switch for turning on and off the power supply from the battery to the electronic circuit is installed so that the switch operation portion is exposed to the opening formed in the cone-shaped protrusion of the stylus cap.

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