KR102579846B1 - Medical device - Google Patents

Abstract

The present invention relates to a medical device, comprising: a handle; An internal conductive pipe portion provided in the shape of a long tube inside the handle portion and having an electrical connection portion on one side thereof; A tubular needle portion coupled to the other side of the handle portion and coupled to communicate with the internal conductive pipe portion; and an electrode member having elasticity and being detachably inserted into the internal space formed by the internal conductive tube part and the tubular needle part in communication with each other. A medical device comprising: a tubular needle portion extending from a portion coupled to the handle portion, a first curved portion bent clockwise in the middle portion, and a first bent portion spaced apart from the first bend portion bent counterclockwise. It is extended to have two bent portions, and the electrode member has a total length longer than the length of the internal space, has at least two bent portions in the middle portion, and has a cut portion at the other end thereof. Do it as

Description

Medical device {Medical device}

The present invention relates to a medical device, and more specifically, to a medical device that can treat a desired area by accurately blocking the target nerve while minimizing damage to surrounding areas using electric heat.

Nerve block surgery is widely used in the medical community for muscle pain caused by excessive muscle tension or pain diseases caused by nerve abnormalities. However, in most cases, non-invasive nerve block surgery, rather than open surgery, does not completely cut the nerve, so there is a problem that the desired therapeutic effect is not achieved.

In the medical device of the prior art, a needle-shaped electrosurgical device electrode is inserted into the patient's biological tissue, reaches adjacent to the target nerve, and then high-frequency current is applied to the electrode to generate high heat in the electrode, thereby solving the problem. An attempt was made to block the nerve by coagulating it. However, unlike completely cutting the nerve, the method of coagulating the nerve was inevitably incomplete, and there was a fundamental limitation in that the nerve could easily be regenerated over time. Existing equipment to coagulate nerves uses high-frequency heat generated at the end of a needle-shaped electrode, but the heat energy decreases rapidly even if it is only 1 mm away from the heat-generating electrode, so even if heated as close to the nerve as possible, only a part of the nerve can be coagulated. It was just there. Not only does it fail to completely coagulate thick nerves due to distance issues, but even if the distance is only a small distance, nerve blocking fails. In addition, due to limitations in the structure in which heat is applied isotropically, heat is applied not only to the target nerve but also to surrounding tissues, causing unnecessary damage. As a result, tissue recovery is slow and inflammation is likely to occur in the damaged tissue. Ultimately, there was a problem that these conventional devices failed to completely block nerves, not only failing to achieve the desired treatment effect but also causing many side effects.

Patent Registration Publication No. 1757131

The present invention is intended to solve the above problems, and its purpose is to provide a medical device that can completely cut and block the target nerve to be blocked while minimizing damage to surrounding tissues.

The medical device of the present invention includes a handle that can be held by hand; An internal conductive pipe portion provided in the shape of a long tube inside the handle portion and having an electrical connection portion on one side thereof; A tubular needle portion coupled to the other side of the handle portion and coupled to communicate with the internal conductive pipe portion; and an electrode member having elasticity and being detachably inserted into the internal space formed by the internal conductive tube part and the tubular needle part in communication with each other. A medical device comprising: a tubular needle portion extending from a portion coupled to the handle portion, a first curved portion bent clockwise in the middle portion, and a first bent portion spaced apart from the first bend portion bent counterclockwise. It is extended to have two bent portions, and the electrode member has a total length longer than the length of the internal space, has at least two bent portions in the middle portion, and has a cut portion at the other end thereof. Do it as

Meanwhile, the electrode member, in a state before being inserted into the internal space, has a first elastic bending portion and a second elastic bending portion at positions corresponding to the first bending portion and the second bending portion of the tubular needle, respectively, and It is preferable that the third elastic bend part is bent at a part spaced apart from the second elastic bend part, and the cut part extends to an end spaced apart from the third elastic bend part.

The tubular needle portion has a first needle portion extending horizontally from a portion coupled to the handle to a first point spaced a first distance apart, and has a first bent portion bent clockwise at the first point, , a second needle portion extending from the first bent portion to a second point spaced a second distance apart, the second bent portion bent counterclockwise at the second point, and a third needle portion extending from the second bent portion. It is provided with a third needle portion extending to an end spaced apart from each other, and the electrode member, in a state before being inserted into the internal space, extends from the middle portion to the other side and is bent clockwise at the first electrode point. It has a bent portion, and has a second electrode portion extending to a second electrode point spaced apart by the second distance, and has a second elastic bent portion bent counterclockwise at the second electrode point, and It is preferable that the third elastic bend part is bent clockwise at the third electrode part spaced a third distance from the elastic bend part, and the cut part extends to an end spaced a fourth distance away from the third elastic bend part. .

Additionally, in the electrode member, the third elastic bending portion preferably includes a 3-1 elastic bending portion bent clockwise, and a 3-2 elastic bending portion extending from the elastic bending portion and bent clockwise again.

Additionally, in the tubular needle part, it is preferable that the bent angle of the first bent portion is within 15 degrees to 35 degrees, and the bent angle of the second bent portion is preferably within 15 degrees to 35 degrees.

And, in the electrode member, the bent angle of the first elastic bent portion is within 75 degrees to 115 degrees, the bent angle of the second elastic bent portion is within 65 degrees to 115 degrees, and the 3-1 elastic bent portion The bent angle is preferably within 25 degrees to 95 degrees, and the bent angle of the 3-2 elastic bend part is preferably within 75 degrees to 115 degrees.

In the electrode member, it is preferable that a cut portion exposure display portion displayed with a length equal to the length of the cut portion is provided on one end opposite to the other end where the cut portion is provided.

In the electrode member, one end opposite to the other end where the cut portion is provided is preferably a rotation display unit bent counterclockwise and extended.

In addition, the tubular needle part is preferably provided with a heat-resistant insulating coating on the outer surface of the remaining portion excluding the needle exposed portion at the other end.

According to the medical device of the present invention, by providing an elastic electrode member including a cutting portion that cuts the nerve while rotating, it is possible to achieve the effect of reliably blocking the target nerve.

1 is a schematic perspective view of a medical device of one embodiment according to the present invention;
Figure 2 is a detailed view showing only the tubular needle portion of the medical device of Figure 1;
Figure 3 is a longitudinal schematic cross-sectional view of the medical device of Figure 1;
Figure 4 is a diagram showing only the electrode member of the medical device of Figure 1;
Figure 5 is a detailed view showing only the left end of the electrode member of Figure 4;
FIG. 6 is a diagram showing a state in which the electrode member is moved to one side in the medical device of FIG. 1.
Figure 7 is a diagram showing a modified example of the electrode member 40a.

Hereinafter, preferred embodiments will be described in detail with reference to the attached drawings.

The medical device 1 is a medical device used for a procedure to block a nerve when pain occurs in the human body and the pain can be treated by blocking a nerve related to the pain.

In particular, the medical device 1 of this embodiment is effective in nerve block surgery to obtain the desired treatment effect by blocking the nerve that causes symptoms of muscle pain or nerve abnormalities.

The medical device 1 includes a handle portion 10, an internal conductive tube portion, a tubular needle portion 30, and an electrode member 40.

The handle portion 10 is a member that the operator can hold with his or her hand. The handle portion 10 has a cylindrical shape. The material has insulating properties.

The internal conductive tube portion is a long tubular member provided inside the handle portion 10. An electrical connection part 22 is provided on one side of the internal conductive pipe (right side in Figure 1). A high-frequency current with weak energy or a high-frequency current with strong energy is supplied to the electrical connection unit 22 from a separately provided external control unit.

The other side of the internal conductive pipe portion extends further to the other side of the handle portion (10). One side of the tubular needle portion 30 is coupled to the other side of the internal conductive pipe portion.

An electrode member 40 penetrates the interior of the internal conductor portion. The high-frequency current supplied to the electrical connection part 22 is supplied to the electrode member 40 located inside the internal conductor part. When the entire internal conductor part is made of a conductive member and the electrode member 40 is located in the internal conductor part, current is supplied to the electrode member 40 through the point where the electrode member 40 and the internal conductor part contact. Meanwhile, in other embodiments, various configurations may be adopted for supplying the current supplied to the electrical connection portion 22 to the electrode member.

The tubular needle portion 30 is coupled to the other side (left side in FIG. 1) of the handle portion 10. The tubular needle portion 30 is coupled to communicate with the internal conductive pipe portion. The tubular needle portion 30 and the internal conductive pipe portion are connected to communicate with each other. Each internal space is connected and communicated with each other, and the connected spaces form an internal space. The tubular needle portion 30 has a shape similar to a regular injection needle, and has a sharp tip at an angle, making it suitable for insertion into the human body of the recipient.

The tubular needle portion 30 extends from a portion coupled to the handle portion 10. The tubular needle portion 30 has a first bent portion 32 gently bent clockwise in its middle portion, and a second bent portion 34 gently bent counterclockwise in a portion spaced apart from the first bent portion 32. Equipped with

That is, referring to FIGS. 1 and 2, the tubular needle portion 30 has a slightly bent portion twice. The first and second bent portions 32 and 34 are not bent at a sharp angle, but are bent gently to maintain the cross section of the internal space.

In the case of this embodiment, referring to FIGS. 2 and 3, the tubular needle portion 30 has a first horizontally extending from a portion coupled to the handle portion 10 to a first point spaced a first distance Ll. It has a needle portion (31), a first bent portion (32) bent clockwise at the first point, and a second bending portion (32) extending from the first bent portion (32) to a second point spaced apart by a second distance (L2). A third needle portion (35) having a needle portion (33), having a second bent portion (34) bent counterclockwise at a second point, and extending to an end spaced a third distance away from the second bent portion (34). ) is provided.

At this time, in the tubular needle portion 30, the bent angle θ1 of the first bent portion 32 and the bent angle θ2 of the second bent portion 34 are approximately equal to each other and are about 25 degrees. In another embodiment, it is preferable that the bent angles θ1 and θ2 of the first and second bent portions 32 and 34 are within 15 degrees to 35 degrees. If it is within this range, it is possible to maintain directionality when the operator pierces and inserts the tubular needle into human tissue. In addition, due to the presence of the bent portion, if the operator rotates the handle portion 10 while the cut portion 48 of the electrode member 40 is exposed to the other end of the tubular needle portion 30, the electrode member may not spin. Instead, the cutting part 48 rotates along the handle part 10. At this time, the direction of the cut portion 48 is indicated by the cut portion direction display unit 49. When the cutting unit 48 rotates in this way, the target nerve is cut.

In addition, referring to FIG. 2, the tubular needle portion 30 is provided with a heat-resistant insulating coating portion 38 on the outer surface of the remaining portion excluding the needle exposed portion 37 at the other (left) end. When the tubular needle portion 30 is inserted into the printed tissue, electricity is transmitted only to the needle exposed portion 37 due to the presence of the heat-resistant insulating coating portion 38.

The heat-resistant insulating coating portion 38 is formed by being glued and fixed to the outer surface of the tubular needle, and is preferably made of an insulating material that is harmless to the human body and has heat resistance. Insulating materials include materials that are harmless to the human body and are used in this field, such as synthetic resin, urethane, and Teflon.

The electrode member 40 is made of a material with conductivity and elasticity. The overall length of the electrode member 40 is longer than the length of the internal space, that is, the internal space formed by the internal conductive tube part and the tubular needle part 30 that communicate with each other. The electrode member 40 is provided with at least two bent portions in its middle portion. Additionally, a cut portion 48 is provided at the other end.

Referring to FIG. 4, the electrode member 40 can be separably inserted into the internal space formed by the internal conductive tube part and the tubular needle part 30 that are in communication with each other. After the electrode member 40 is inserted into the internal space, it can be moved in the longitudinal direction within the internal space as needed.

1 to 3, the cut portion 48 formed by bending the other end of the electrode member 40 is shown exposed to the outside of the other end of the tubular needle portion 30, and in Figure 6, the electrode member ( 40 is shown moving in one direction indicated by an arrow so that the cut portion 48 enters the needle exposed portion 37.

Meanwhile, in the case of this embodiment, the electrode member 40 is bent as shown in FIG. 4 before being inserted into the internal space. The electrode member 40 is provided with a first elastic bending portion 42 and a second elastic bending portion 44 at respective positions corresponding to the first bending portion 32 and the second bending portion 34 of the tubular needle portion 30. I'm doing it. Alternatively, the electrode member 40 has a third elastic bent portion 46 bent at a portion slightly spaced apart from the second elastic bent portion 44, and extends in an almost straight line to an end spaced apart from the third elastic bent portion 46. It is provided with a cutting portion (48).

The bent shape of the other side of the electrode member 40 corresponds to the bent shape of the tubular needle portion 30. That is, the electrode member 40, in a state before being inserted into the internal space, has a first elastic bending portion 42 extending from the middle portion to the other side and bent clockwise at the first electrode point, and has a second distance L2 ) and a second electrode portion (43) extending to a second electrode point spaced apart by a distance of A third elastic bent portion 46 is bent clockwise at the third electrode portion spaced a third distance L3 from the third electrode portion, and a cut portion 48 extends from the third elastic bend portion 46 to an end spaced a fourth distance away. is provided. The fourth distance is the length of the cut portion.

Meanwhile, in this embodiment, a cut portion exposure amount display portion 47 is provided at almost the end of one side of the electrode member 40. The cut portion exposure amount display portion 47 is a portion marked with a length equal to the length of the cut portion exposure amount display portion 47 on one end opposite to the other end where the cut portion 48 is provided. After the tubular needle portion 30 is inserted into human tissue, the operator cannot see it with the naked eye, so the configuration of the cut portion exposure amount display portion 47 is useful.

Referring to FIG. 6, the cutting portion exposure amount display unit 47 is displayed when the operator pushes the electrode member 40 toward the nerve tissue after the tubular needle unit 30 is inserted into the human tissue and successfully explores the target nerve. , It is possible to determine whether the cut portion 48 protrudes by a fourth distance from the needle exposed portion 37 of the tubular needle portion 30 and forms approximately a right angle with the needle exposed portion 37. In addition, to describe the present embodiment in more detail, the third elastic bending portion 46 includes a 3-1 elastic bending portion 46-1 bent clockwise, and a portion 46-1 extending in a straight line to some extent therefrom. 3), and a third-2 elastic bending portion 46-2 bent clockwise again at its end.

At this time, referring to FIG. 5, the bent angle (θ3) of the first elastic bent portion 42 is approximately 90 degrees, the bent angle (θ4) of the second elastic bent portion 44 is approximately 80 degrees, and the 3-1 elastic bending portion 42 is approximately 90 degrees. The bent angle θ5 of the bent portion 46-1 is approximately 35 degrees, and the bent angle θ6 of the 3-2 elastic bent portion 46-2 is approximately 90 degrees, and the best results can be obtained at these angles. there was.

The best result is that the electrode member 40 receives an appropriate frictional force inside the tubular needle unit, so that it does not easily come out, and appropriate axial movement is achieved, especially when the operator rotates the handle to cut the nerve. , the electrode member 40 rotates together with the handle, and if it is unexpectedly caught on a bone or the like on the cut portion 48 and cannot rotate, a state is maintained in which the cut portion 48 does not rotate even though the handle portion 10 rotates. it means. In this way, when the cutting part 48 receives strong resistance, rotational force is no longer applied and the cutting part 48 rotates, thereby preventing accidents in which the cut part is bent or fractured within human tissue.

Meanwhile, the cutting part direction display part 49 is provided so that the operator can know that the handle part 10 rotates but the cutting part 48 does not rotate. Since the bent direction of the cut portion 49 is the same as that of the cut portion 48, it functions to inform the operator of the direction of the cut portion 48, which is located within the tissue and is not visible. The cut direction indicator unit 49 rotates together with the handle unit 10 when the operator rotates it, but in a state where the cut unit 48 is caught on the back and does not rotate, it does not rotate with the handle unit 10 and remains stationary. By showing this, it allows the operator to know that the cut portion 48 inside the human body is caught in a bone or the like and cannot be rotated.

Meanwhile, in another embodiment, the bent angle θ3 of the first elastic bending portion 42 is within 75 degrees to 115 degrees, and the bent angle θ4 of the second elastic bending portion 44 is within 65 degrees to 115 degrees, The bent angle (θ5) of the 3-1 elastic bending portion (46-1) is within 95 degrees from 25 degrees, and the bending angle (θ6) of the 3-2 elastic bending portion (46-2) is within 75 degrees to 115 degrees. desirable.

The angle of this embodiment raised above was able to obtain the best effect, and a certain degree of effect could be obtained within the above-mentioned range. This best angle value or allowable angle value was obtained after countless trial and error attempts and various combinations of angles were attempted.

Meanwhile, Figure 7 shows a modified example of the electrode member 40a. Compared to the electrode member 40 of the previous embodiment, the third elastic bending portion 46a provided on the other side of the electrode member 40a of the present embodiment is somewhat different in that it is bent more gently into a semicircle. The effect that can be obtained from the electrode member 40a of this shape is that the torsional force applied to the cut portion 48 during the cutting action is distributed more widely across the third elastic bending portion 46 while increasing the friction force. Other effects are almost similar to the previous embodiment. Accordingly, most of the explanations that can be obtained from the electrode member 40 of the previous embodiment are applied as is or with appropriate modifications.

Hereinafter, a surgical method using the medical device 1 of this embodiment will be described.

The electrode member 40 is inserted into the inner conductive tube portion and the tubular needle portion 30. The electrode member 40 has a shape that is bent several times, but because it is made of an elastic material, it can be elastically deformed and inserted into the internal space. In addition to the medical device (1), prepare a separate nerve search and high-frequency heat generation control device (not shown). The control device is connected to the electrical connection 22 of the medical device 1 with a wire. At this time, the electrical connection part 22 is made to allow rotation of the handle part 10.

The control device is capable of supplying a weak energy nerve search current and a strong high frequency current to the needle exposure portion 37 and the electrode member 40 through the electrical connection part 22, and a weak energy nerve search current during the procedure. Current and high-frequency current with strong energy can be selected and supplied as needed.

Meanwhile, the control device can use a variety of devices with the function of using electrical signals and high-frequency heat. As an example, the appropriate weak energy current supplied to probe a nerve is an intensity of 0-3 volts, a frequency of 50-75Hz, and a holding time of 0.5-1 ms (millisecond). In addition, the high-frequency current of strong energy supplied by the control device to cut the nerve is appropriate at a power of about 130W at a frequency of 4MHz.

Before opening the sterilized and sealed medical device (1) and inserting the tubular needle portion (30) into the patient, an electric wire is connected to the electrical connection portion (22). Current is applied to the tubular needle unit 30 through a wire. At this time, the patient is asked to hold another electrode connected to the control device in his/her hand. With this configuration, the control device, the tubular needle unit 30, the electrode member 40, and the human body form one electric circuit, allowing current to flow through the human body.

A nerve search current is applied to the internal conductor unit and the tubular needle unit 30 through the electrical connection unit 22 that is electrically connected to the control device. The tubular needle unit 30 is provided with a heat-resistant insulating coating unit 38, so that the nerve search current flows into the human body only through the needle exposure unit 37 located at the other end of the tubular needle unit 30.

When preparations before the procedure are completed, the operator holds the handle part 10 and inserts the slightly curved tubular needle part 30 in the shape of an injection needle through the skin or mucous membrane of the person being treated. At this time, the cut portion 48 of the electrode member 40 is not exposed at the end of the tubular needle portion 30. That is, the cut portion 48 of the electrode member 40 is located inside the other end of the tubular needle portion 30 and is not exposed (state shown in FIG. 6).

Meanwhile, by using the cut portion exposure display unit 47, it is possible to confirm that the other end of the electrode member 40 is not exposed to the other end of the tubular needle unit 30 even after being inserted into the human body of the person being treated. do. All procedures are performed without making any incisions on the recipient.

The operator applies a nerve search current to cause the tubular needle unit 30 to reach the target nerve of the subject. Since this process is performed inside the human body of the person receiving the treatment, the operator cannot do it with the eyes. However, when the exposed needle part 37 of the tubular needle part 30 contacts the target nerve, the nerve applied to the handle part 10 is applied. By confirming that the search current electrically stimulates the nerve, which causes the muscles connected to the nerve to contract, or by confirming that other nerve stimulation phenomenon occurs, the operator can confirm that the needle exposure portion 37 has contacted the target nerve. becomes recognizable.

Afterwards, the operator holds one end of the electrode member 40 using a tool capable of strong gripping and inserts it further into the internal conductive pipe portion, so that the cut portion 48 of the other end portion is the other end of the tubular needle portion 30. Ensure that it is exposed to the outside. At this time, the electrode member 40 must be pushed in to an exact length so that the cut portion 48 is exposed at a right angle to the third needle portion 35, as shown in FIG. 2. For the exact length that needs to be pushed in, there is no mistake if you look at the cut portion exposure display section (47) and push it in.

That is, when the other end of the tubular needle portion 30 contacts the target nerve, the electrode member 40 is pushed further so that the cut portion 48 is in a state as shown in FIG. 2.

Next, the control device is operated so that a strong high-frequency current is applied to the electrode member 40. High-frequency current is supplied through the electrical connection (22).

Next, the operator rotates the handle portion 10 around the longitudinal axis of the handle portion 10. At this time, the cutting part 48 rotates together with the rotation of the handle part 10 to cut the target nerve. At this time, high-frequency heat sufficient to cut the nerve is generated in the cutting portion 48, thereby assisting the cutting movement. The cutting part 48 acts like a knife to cut the target nerve.

At this time, the electrode member 40 is not fixed to the tubular needle 30, but the first to third elastic bends are formed, and the direction in which the bends are formed is completely consistent with the direction in which the tubular needle 30 is bent. Therefore, the electrode member 40 moves together with the tubular needle portion 30 as if it were coupled. Therefore, when the handle portion 10 rotates, the electrode member 40 rotates and the cutting portion 48 may also rotate. In this case, the direction of the cut direction indicator 49 matches the direction of the needle direction indicator 11.

In addition, since the electrode member 40 is not completely fixed to the tubular needle unit 30, in some cases, when a bone, etc., is caught in the cutting unit 48 to be rotated and strong resistance is received, the electrode member 40 is not completely fixed to the tubular needle unit 30. As the coupling with (30) is separated, it spins and the cut portion (48) does not rotate even if the handle portion (10) rotates, thereby preventing accidents in which the cut portion is bent or fractured due to excessive rotational force.

When this situation occurs, the direction of the cutting direction indicator 49 does not match the rotating needle direction indicator 11 and is misaligned. When this phenomenon occurs, the operator receives strong resistance from the cutting part 48 while using the electrode member 40. ) can be confirmed to be not rotating. Through this mechanism, the operator can see that the cut portion 48 is caught in a bone inside the human body and cannot rotate, and it is possible to appropriately deal with this problem.

A qualified doctor with specialized knowledge of the structure of the internal nerves and muscles of the human body can perform this procedure without error through a nerve cutting process that is adjusted to the exact location and direction using location and direction information from accurate nerve exploration. It is possible to perform.

According to the medical device (1) of the embodiment according to the present invention, the elastic electrode member is located inside during the process of finding the target nerve, and after finding it, it is moved by a precise amount with a simple operation so that the cut portion is exposed. It is possible to cut the target nerve by rotating only in the direction in which it exists, so it is possible to completely cut only the target nerve. In addition, the effect of virtually no damage occurring to surrounding tissues other than the target nerve can be achieved.

It is possible to completely sever the target nerve through a procedure using the medical device 1 of the present invention. If the target nerve is a motor nerve, the muscles connected to the target nerve are relaxed, thereby treating muscle pain, and the effect is to reduce the size of the muscle by causing atrophy. If the target nerve is a sensory nerve, it paralyzes the sensory nerve, thereby treating nerve pain. It can treat pain, and if the target nerve is the autonomic nerve, the action of the autonomic nerve can be suppressed.

Meanwhile, existing nerve search needles in the related field are all formed in a straight line, so when searching for a nerve, it is possible to know through a signal that it is adjacent to the nerve, but it is not possible to know in which direction of the needle the nerve is located. However, the shape of the tubular needle portion 30 of the medical device 1 of the present invention with two bent portions has the effect of informing the direction in which the nerve is located.

To explain in more detail, first, as with existing nerve search needles, when the needle approaches a motor nerve, the distance approached can be determined by watching the muscle contract. Once you get as close as possible, if you hold the handle and rotate the needle, the tip of the needle will not simply rotate around the axis, but will rotate while generating pressure on one side (see arrow shown in Figure 6). And the direction in which the pressure is strong moves along the direction of rotation. At this time, when pressure is applied in the direction where the target nerve is located, the distance between the needle and the nerve becomes closer and a signal is generated that the side of the needle is pressing on the nerve, causing the muscle to contract more strongly. In contrast, pressure is applied in the opposite direction. When you receive it, the pressure on the nerve actually decreases, so you can see that muscle contraction weakens as the distance between the needle and the nerve increases. The direction in which pressure is applied when the needle rotates can be confirmed through the needle direction indicator (11). Even if the needle is inserted into the tissue and cannot be seen, you can check in which direction the needle is currently applying pressure by looking at the needle direction indicator (11). Based on this information, a special effect can be obtained in that it is possible to determine on which side the nerve is located relative to the needle. Directional information regarding the location of the identified nerve is essential for performing an accurate nerve block procedure.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

1: Medical device 10: Handle part
22: Electrical connection part 30: Tubular needle part
37: Needle exposed portion 38: Heat-resistant insulating coating portion
40: electrode member 47: cut portion exposure display portion
48: Cut part 49: Cut part direction indicator part

Claims (9)

delete A handle that can be held by hand;
An internal conductive pipe portion provided in the shape of a long tube inside the handle portion and having an electrical connection portion on one side thereof;
A tubular needle portion coupled to the other side of the handle portion and coupled to communicate with the internal conductive pipe portion; and
an electrode member having elasticity and being detachably inserted into an internal space formed by the mutually communicating inner conductive tube portion and the tubular needle portion; A medical device comprising:
The tubular needle portion extends from the portion coupled to the handle portion, and is formed to include a first bent portion bent clockwise in the middle portion and a second bent portion bent counterclockwise in a portion spaced apart from the first bent portion. become,
The electrode member has a total length longer than the length of the internal space, has at least two bent parts in the middle, and has a cut part at the other end,
The electrode member, in a state before being inserted into the internal space, has a first elastic bend and a second elastic bend at positions corresponding to the first and second bends of the tubular needle, respectively, and the second elastic bend. A medical device comprising a third elastic bending portion bent at a portion spaced apart from the bending portion, and the cutting portion extending to an end spaced apart from the third elastic bending portion. According to paragraph 2,
The tubular needle portion has a first needle portion extending horizontally from a portion coupled to the handle to a first point spaced a first distance apart, and has a first bent portion bent clockwise at the first point, , a second needle portion extending from the first bent portion to a second point spaced a second distance apart, the second bent portion bent counterclockwise at the second point, and a third needle portion extending from the second bent portion. It has a third needle portion extending to the ends spaced apart from each other by a distance,
The electrode member, in a state before being inserted into the internal space, includes the first elastic bending portion extending from the middle portion to the other side and bent clockwise at the first electrode point, and second electrodes spaced apart by the second distance. a second electrode portion extending to a point, the second elastic bending portion being bent counterclockwise at the second electrode point, and a third electrode portion being spaced the third distance from the second elastic bending portion. A medical device comprising: a third elastic bending portion bent in a direction; and a cutting portion extending from the third elastic bending portion to an end spaced a fourth distance away from the third elastic bending portion. According to paragraph 3,
In the electrode member, the third elastic bending portion includes a 3-1 elastic bending portion bent clockwise, and a 3-2 elastic bending portion extending from the elastic bending portion and bent clockwise again. . According to paragraph 2,
In the tubular needle unit, a bent angle of the first bent portion is within 15 degrees to 35 degrees, and a bent angle of the second bent portion is within 15 degrees to 35 degrees. According to paragraph 4,
In the electrode member, the bending angle of the first elastic bend is within 75 degrees to 115 degrees,
The bent angle of the second elastic bend is within 65 degrees to 115 degrees, the bent angle of the 3-1 elastic bend is within 25 degrees to 95 degrees, and the bend angle of the 3-2 elastic bend is within 75 degrees. A medical device characterized in that it is within 115 degrees. According to paragraph 2,
A medical device, wherein, in the electrode member, a cut portion exposure amount display portion displayed with a length equal to the length of the cut portion is provided on one end portion opposite to the other end where the cut portion is provided. According to paragraph 2,
In the electrode member, one end opposite to the other end where the cut portion is provided is a rotation display unit bent counterclockwise and extended. According to paragraph 2,
A medical device characterized in that the tubular needle part is provided with a heat-resistant insulating coating on the outer surface of the remaining portion excluding the needle exposed portion at the other end.

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