KR101049672B1 - The structure of needle for ultrasonic guided procedure - Google Patents

Abstract

PURPOSE: A structure of a needle for an ultrasonic guided procedure is provided to enable a user to accurately insert a needle into a site to be treated. CONSTITUTION: A structure of a needle for an ultrasonic guided procedure comprises a syringe needle hole, an ultrasonic wave reflection surface, an ultrasonic wave passing surface(103), and an ultrasonic wave reflection groove(101). The syringe needle hole(106) has a transverse section of a reverse tunnel type. In the ultrasonic wave reflection side, two inclination angles are adjacent towards a slanting surface(100a). The ultrasonic wave reflection groove is formed in a polygonal shape of a constant depth.

Description

The structure of needle for ultrasonic guided procedure

The present invention relates to a needle structure for ultrasound-guided interventional procedures, and more specifically, to an ultrasound-assisted tissue biopsy, aspiration of massy lesions, amniocentesis, nerve block, intramuscular nerve stimulation and excision, and proliferation treatment. The present invention relates to a needle structure for ultrasound-guided interventional procedures that can easily identify a real-time position of an injection needle.

Ultrasound is widely used in the medical field. It has been used for diagnostic purposes only, but it is inexpensive and allows real-time movement to be observed, and it can be used for mediation such as tissue biopsy, aspiration of mass lesions, amniotic fluid, nerve block, intramuscular nerve stimulation and dissection, and proliferation therapy. It is widely used for red procedures.

Ultrasound is thought to be the exclusive possession of radiologists, but recently, it is known to be very useful for the diagnosis and treatment of musculoskeletal disorders, and its use is rapidly expanding to replace expensive equipment such as MRI.

As described above, ultrasound is not merely used for diagnostic purposes at first, but is used as an auxiliary device for injection therapy, and as a result, the number of doctors using ultrasound is increasing rapidly.

This is because the ultrasound can confirm the real-time position of the needle, so it is possible to accurately insert the needle in the area to be treated.

However, the biggest problem during the ultrasound guided procedure is that it is difficult to identify the position of the needle, which may damage important normal tissues.

Almost all procedures under ultrasound guidance are performed at an inclination of more than 30 degrees. The probe, which is an ultrasonic inspection device, measures the amount of ultrasonic waves that are incident upon the object and reflected by the object.

Table 1 is a schematic diagram of the ultrasonic reflection according to the inclination angle of the general needle.

Note) A: Incident angle 0 degrees, B: Incidence angle 15 degrees, C: Incidence angle 30 degrees, D: Incidence angle 45 degrees

As shown in the schematic diagram of Table 1, when the incident angle is 0 degrees (A), all the ultrasonic waves are returned toward the probe and the reflection efficiency is 100%. At the incident angle of 15 degrees (B), 25 to 26 of the 30 virtual lines are returned. The reflection efficiency is 83.5% and 8 to 9 out of 30 are returned toward the probe at the incidence angle of 30 degrees (C), and the reflection efficiency is 30%. Is 0%.

As a result, it is possible to determine the position of the needle until the incidence angle is around 15 degrees, but the image of the needle becomes very faint from around 30 degrees, and the image of the needle is no longer visible around 45 degrees or more.

[Document 1] US 005967991 A 1999.10.19 [Document 2] US 006106473 A 2000.08.22 Document 3 US 006110483 A 2000.08.29 [Document 4] KR 10-0412011 B1 2003.12.09 As in the background art, since the interventional procedures performed under ultrasound guidance are often performed at an inclination of 30 degrees or more, the problem that it is not easy to determine the real-time position of the needle has been a big obstacle to medical development. . Various methods have been tried to solve this problem. A method of detecting movement caused by vibrating the needle as in Document 1, a method of coating a material well visible on the surface of the needle as shown in Documents 2 and 3, and an ultrasonic refraction by forming a groove in the needle surface as shown in Document 4 There is a prior art to change. First, the method of vibrating the needle to move the needle and tissue (US5967991) is expensive, because it requires a device to vibrate within the needle and a separate device to detect vibration. It is a kind of technique different from this invention. Second, the method of applying the ultrasonic contrast enhancement material to the surface of the needle (US06110483, US6106473) is a mechanism that causes ultrasonic reflection by coating a material containing microbubbles, which is different from the mechanism of the present invention. In this method, the thickness of the needle should be very thick when the coating is added to the needle, and if the coating is covered to the tip of the needle, the skin cannot be penetrated. If the needle tip protrudes to make it easier to penetrate the skin, there is a possibility that the coating may peel off due to friction with the surrounding tissue as it penetrates the skin or passes between tissues. If the coating remains in the body tissue, the size is so small that it is very difficult to remove surgically, there is a disadvantage that can cause serious complications such as foreign body reaction, infection, abscess, sepsis. Third, it is a technique to control the reflection angle of ultrasonic waves by treating the metal surface of the needle. This technique is very effective because it requires no additional materials or equipment, making it easy to manufacture and very cost-effective. Document 4 of the prior art for changing the direction of the reflection of the ultrasonic wave is a method of inducing the refraction of the ultrasonic wave by making a groove in the micro-body (needle) and the outer layer. The method of claim 7, wherein the plurality of grooves are different in size, and the needle tool is characterized in that it is irregularly formed on the outer layer. In claim 9, the plurality of grooves are different in size, on the surface of the micro-body A needle tool characterized by being formed irregularly ”is defined as“ uneven size of the groove ”, without mentioning the shape of the groove in Figs. Is shown in hemispherical shape.

 In the interventional procedure under ultrasound guidance, the most important thing for the ultrasound reflection is the shape of the groove in the long axis of the needle. The reflection efficiency changes depending on the shape of the groove. The hemispherical groove major axis cross section is the hemispherical deepest in the center, and the groove depth becomes shallower toward the edge of the groove. Therefore, the center and the edge of the groove have a different reflection efficiency, and the reflection efficiency decreases toward the edge.

In the present invention, in view of the problems of the prior art in the present invention, in particular to solve the technical problem of identifying the position of the needle by inducing the refraction of the ultrasonic wave by injecting a groove in the outer layer of the injection needle proposed in Document 4 First, the ultrasonic reflection efficiency for the groove formed in the outer layer of the injection needle will be described in detail by the schematic diagram according to the following Table 2.

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four
bracket
30
Degree

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45
Degree

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60
Degree

(Ultrasound reflection diagram for each inclination angle when hemispherical groove is formed in the needle needle length direction)

As shown in Table 2, the reflection efficiency is 63.6% (14/22) at the center portion A of the groove at the inclination angle of 30 degrees, but 31.6% (6/19) at the edge B of the groove.

The reflection efficiency of the groove center portion C at the inclination angle 45 degrees is 53.3% (8/15), but the reflection efficiency of the groove edge D is 40.0% (6/15).

At the inclination angle of 60 degrees, the reflection efficiency of the groove center portion E is 36.3% (4/11), and the reflection efficiency of the groove edge F is 3/15 (20.0%).

It should be noted that there is a region in which the ultrasonic waves cannot pass inside the groove. As shown in the schematic diagrams C, E, and F in Table 2, the shadowed area of the upper groove is hidden by the edge of the upper groove so that the ultrasonic waves cannot proceed to the bottom of the groove.

 The larger the inclination angle, the larger the shadow area. The most important thing to note when making grooves on the needle surface is the strength of the needle. The shadow area has the disadvantage of weakening the needle strength without affecting the ultrasonic reflection at all.

At an angle of incidence of the injection needle at a 45 degree tilt, about 50% of the bottom of the groove belongs to the shadow area, and at a 60 degree tilt, about 60% belongs to the shadow area. Therefore, at the incidence angle of 45 degrees, only about 50% of the groove bottom area (the thick black curve of C) is used, and at the incidence angle of 60 degrees, only 40% of the groove bottom area (the thick black curve of E) is used for ultrasonic reflection. Derivatives have a very weak disadvantage.

In addition, ultrasonic reflection in the needle uniaxial cross section should also be considered. Table 3 below is a schematic diagram of the ultrasonic reflection occurs in each uniaxial cross section of the needle and grooved needle.

As shown in the schematic diagram of Table 3, the transverse cross-sectional reflection efficiency in the longitudinal direction of the general needle (A) is 34.3% (11/32), and the needle (B) with a circular groove in the cross section is inconsistent in the ultrasonic reflection, so it is accurate. Although the numerical value cannot be calculated, the approximate reflection efficiency can be estimated to be about 50% (17/34), but the long longitudinal cross section and the horizontal transverse cross section are planar, and the reinforcement frame is formed in the longitudinal direction (C). Has 100% reflection efficiency and forms a reinforcing frame at the edge of the groove to maintain strength and prevent skin or muscle tissue from getting caught in the groove.

Therefore, it can be seen that the reflection efficiency of the needle should simultaneously consider the long-term cross-sectional reflection efficiency in the longitudinal direction and the transverse cross-sectional reflection efficiency in the longitudinal direction, and the following formula is established.

Two-dimensional reflection efficiency = reflection efficiency of longitudinal long axis cross section × longitudinal direction Transverse end Surface reflection efficiency

Two-dimensional reflection efficiency of the general needle according to the inclination angle according to the above formula is shown in Table 4.

Needle tilt angle Long axis cross section reflection efficiency Transverse section reflection efficiency 2D reflection efficiency 30 degrees 30% 34.3% 11.1% 45 degrees 0% 34.3% 0% 60 degrees 0% 34.3% 0%

In addition, the two-dimensional reflection efficiency of the needle with a hemispherical groove is shown in Table 5 below.

Needle tilt angle Long axis cross section reflection efficiency Transverse section reflection efficiency 2D reflection efficiency 30 degrees 63.6% 50% 31.8% 45 degrees 53.3% 50% 26.7% 60 degrees 36.3% 50% 18.2%

As shown in Table 5, even in the center of the hemispherical groove formed in the needle, the two-dimensional reflection efficiency is 31.8% at 30 degrees inclination, 26.65% at 45 degrees inclination, 18.2% at 60 degrees.

However, this is only an efficiency that is applied only in the center of the hemispherical groove, and the farther from the center of the groove, the lower the efficiency, and therefore, the efficiency of the entire hemispherical groove will be weaker.

In view of the above problems, in the present invention, there should be no shadow area formed at the upper end of the hemispherical groove, the reflection efficiency should be good in both the longitudinal and transverse cross-sections of the longitudinal direction, and the reflection efficiency is maintained even if the needle incline increases. It was determined that the ultrasonic reflection regulator is required. That is, the strength of the needle should not be reduced by making the ultrasonic reflection regulator on the surface of the needle, and the injection efficiency can be easily confirmed in real time during the ultrasound-induced interventional procedure by increasing the reflection efficiency of the long axis and the transverse cross section. It is an ultimate object of the present invention to provide a needle structure.

Accordingly, in the present invention, in the needle 100 of a predetermined standard, a needle hole 106 having a reverse tunnel type in cross section and a plane having a needle outer diameter in the longitudinal direction of the needle having the slope portion 100a formed therein, In the formed needle plane, two inclination angles integrally adjacent to the inclined surface 100a are connected to the ultrasonic reflection surface 104; 105 and the ultrasonic passing surface 103 of a predetermined inclination angle made by shaving the wall of the groove that obstructs the ultrasonic progression. The ultrasonic reflection groove 101 of the shape of the polygonal groove having a predetermined depth was introduced, and the needle structure for the ultrasound guided interventional procedure was introduced. In particular, when the ultrasonic reflection groove 101 had a maximum depth of 0.15 to 0.25 mm, the inclination angle was 30 degrees. Ultrasonic passing surface 103 and ultrasonic reflecting surface 104 and 105 having an inclination angle of 60 degrees and 45 degrees, or ultrasonic passing surface 107 and ultrasonic reflecting surface 108 having an inclination angle of 45 degrees and an ultrasonic passing surface having an inclination angle of 30 degrees. 107 and 6 Ultrasonic reflecting surface 108 made of 0 degree inclination angle, Ultrasonic passing surface 111 made of 10 degree inclination angle and Ultrasonic reflecting surface 112 made of 80 degree inclination angle, Ultrasonic passing surface 113 made of inclination angle 30 degrees and an isosceles groove Needle inclination during the ultrasound-guided interventional procedure with a needle according to the needle structure for the ultrasound-guided interventional procedure characterized in that it is provided by any means selected from the air enclosed groove 114 consisting of In between, it is an invention made to see well from any angle.

According to the present invention, the injection needle formed with the ultrasonic reflex groove according to the needle structure for the ultrasound-guided interventional procedure, tissue biopsy, aspiration of massy lesions, amniotic fluid, nerve block, intramuscular nerve stimulation and excision, proliferation treatment Since the real-time position of the injection needle can be confirmed during the procedure, it is easy to accurately insert the needle into the area to be treated, which is a useful invention without the risk of damaging normal tissues.

1 is a perspective view of only the injection needle portion in a first embodiment according to the present invention
2 is a cross-sectional view taken along line A-A ', and ii) is a line taken along line B-B', and iii) is taken along line C-C '.
Figure 3 is a partial enlarged side view of the ultrasonic reflection groove formed in the longitudinal side of the needle needle according to the present invention
4 is a second embodiment of the present invention, i) is a perspective view of only the needle portion, ii) is a longitudinal side cross-sectional view, and iii) a lateral cross section.
5 is a third embodiment of the present invention, i) is a perspective view of only the needle portion, ii) is a longitudinal side cross-sectional view, and iii) a lateral cross section.
6 is a partially enlarged side view of the ultrasonic reflection groove of various angles consisting of an ultrasonic passing surface and a supersonic reflection surface on the longitudinal side of the needle according to the present invention;
Ⅰ) is a partial enlarged side view of the 45 degree ultrasonic reflecting groove consisting of an ultrasonic passing surface and an ultrasonic reflecting surface with a 45 degree inclination angle
Ii) is a partially enlarged side view of a 60 degree ultrasonic reflecting groove consisting of an ultrasonic passing surface having a 30 degree inclination angle and an ultrasonic reflecting surface having a 60 degree inclination angle.
Ⅲ) is a partial enlarged side view of an 80 degree ultrasonic reflection groove consisting of an ultrasound pass surface consisting of a 10 degree inclination angle and an ultrasound reflecting surface consisting of an 80 degree inclination angle.
Ⅳ) is a partial enlarged side view of the ultrasonic reflection groove composed of an air enclosed type consisting of an air pass groove formed of an inclination groove and an ultrasound pass surface formed of an inclination angle of 30 degrees

In view of the above problems, the following is a detailed configuration means and one embodiment for the ultrasonic guided interventional procedure needle structure according to the present invention.

Ultrasonic reflection groove of the injection needle used in the ultrasound-guided interventional procedure according to the present invention, the ultrasonic passing surface made by cutting the wall of the side obstructing the ultrasonic wave so that no shadow area is generated, and the needle long axis direction It is composed of an ultrasonic reflecting surface made of a constant angle.

Ultrasonic reflection grooves made of a predetermined angle with respect to the longitudinal direction of the needle long axis according to an embodiment of the present invention is composed of five types, such as polygon (multiangle), 45 degrees, 60 degrees, 80 degrees, air-containing.

Hereinafter, with reference to the accompanying drawings in detail as follows.

1 is a perspective view of only the injection needle unit according to the first embodiment according to the present invention, FIG. 2 is a cross-sectional view of FIG. 1 iii) a cross-sectional view taken along the line A-A ', and ii) a cross-sectional view taken along the line B-B'. 3 is a cross-sectional view taken along line C-C ', and FIG. 3 is a partially enlarged side view of the ultrasonic reflection groove formed on the longitudinal side of the needle which is the main part according to the present invention.

Example 1 .

In the needle needle 100 of the predetermined standard, the needle hole 106 of the cross section is reverse tunnel type; Ultrasonic reflecting surfaces (104; 105) and the inclination angle of the needle needle outer diameter width in the longitudinal direction of the needle formed on the slope portion (100a), the two inclination angle toward the slope portion (100a) integrally adjacent The ultrasonic passing surface 103 of a predetermined inclination angle is connected to form an ultrasonic reflection groove 101 having a polygonal depth of a predetermined depth.

In the same structure as in Example 1, the maximum depth of the polygonal ultrasonic reflection groove 101 was 0.15 to 0.25 mm in the G23 to G24 standard needle having an outer diameter of 0.64 to 0.56 mm, and the ultrasonic passing surface ( An inclination angle of 103 is 30 degrees, and a needle 100 having an ultrasonic reflection groove 101 formed of ultrasonic reflection surfaces 104 and 105 each having an inclination angle of 60 degrees and 45 degrees is provided.

Effect of the following Table 6 is a schematic diagram for knowing the ultrasonic reflection efficiency that can easily confirm the real-time position of the injection needle during the ultrasound-guided interventional procedure by the injection needle formed with the ultrasound reflection groove 101 as in Example 1 Find out.

Each schematic diagram of Table 6 is based on the yield of the reflected beam returned to the probe with respect to the number of ultrasonic incident beams irradiated from the probe, which is an ultrasonic device to facilitate the real-time position of the needle during the ultrasound-guided interventional procedure It shows the reflection efficiency.

In Table 6, when the needle inclination angle is 30 degrees (i), 45 degrees (ii), and 60 degrees (iii), the number of reflected beams returned to the probe out of 30 ultrasonic incident beams is 30, respectively, The reflection efficiency is 100% each. Therefore, it is to facilitate the real-time location of the injection needle during the ultrasound-guided interventional procedure.

Side view of the enlarged partial excerpt of the ultrasonic reflection groove formed on the longitudinal side of the needle shown in Figure 3, the mechanical function to improve the reflection efficiency of the needle 100, the ultrasonic reflection groove 101 is formed as shown in Learn more in detail.

'Ⅰ' of Table 6 is the case of the needle inclination angle of 30 degrees, the ultrasonic wave A hit the ultrasonic passing surface 103 formed at the inclination angle of 30 degrees of the ultrasonic reflection groove 101 is refracted in the direction of 120 degrees ultrasonic wave formed at an inclination angle of 45 degrees It collides with the reflective surface 105 and the ultrasonic reflective surface 105 formed at an inclination angle of 60 degrees. The ultrasonic waves that hit the ultrasonic reflecting surface 105 formed at an inclination angle of 45 degrees are refracted in the 30 degree direction and proceed toward the probe, and the ultrasonic waves B which collide at the ultrasonic reflecting surfaces 104 formed with an inclination angle of 60 degrees are refracted in the 0 degree direction and are probed. Go back to

On the other hand, the ultrasonic wave C, which is incident from the probe and hits the ultrasonic reflecting surface 105 formed at 45 degrees, is refracted in the 330 degree direction to return toward the probe, and is incident on the ultrasonic reflecting surface 104 formed at the probe and formed at 60 degrees immediately. The impacted ultrasonic wave D is refracted in the direction of 300 degrees with respect to the direction of the ultrasonic wave and then refracted in the 0 degree direction after colliding with the ultrasonic passing surface 103 to return to the probe.

Therefore, the reflection efficiency by the ultrasonic passing surface 103 formed at the inclination angle of 30 degrees and the ultrasonic reflecting surfaces 105 and 104 formed at the inclination angle of 45 degrees and 60 degrees when the needle inclination angle is 30 degrees according to the present invention is the ultrasonic incidence. When the number of beams is 30, the number of reflected beams returned to the probe is 30, so it is calculated as 100%.

The ultrasonic passing surface 103 removes the portion covering the ultrasonic wave so that no shadow area is generated so that the ultrasonic wave can pass through the entire groove.

Next, 'ii' of Table 6 indicates the needle tilt angle of 45 degrees. The ultrasonic beam incident from the probe hits the ultrasonic passage surface 103 formed at 30 degrees, and the ultrasonic wave A is refracted in the direction of 150 degrees and is formed at the tilt angle of 45 degrees. After hitting the ultrasonic reflecting surface 105, it is refracted in the 30 degree direction and proceeds toward the probe.

On the other hand, the ultrasonic wave B hitting the ultrasonic reflection surface 105 formed at an inclination angle of 45 degrees among the ultrasonic beams incident from the probe immediately returns to the probe. The ultrasonic wave C hitting the ultrasonic reflection surface 104 formed at an inclination angle of 60 degrees among the ultrasonic beams incident from the probe is refracted in the direction of 330 degrees and proceeds toward the probe.

Therefore, the reflection efficiency when the needle inclination angle is 45 degrees according to the present invention is calculated to be 100% of the number of the reflected beams back to the probe when 30 ultrasonic incident beams.

Next, 'ⅲ' of Table 6 indicates a needle inclination angle of 60 degrees, and the beam incident from the probe does not hit the ultrasonic wave passing surface 103 formed at the inclination angle of 30 degrees. The ultrasonic wave A hitting the ultrasonic reflecting surface 105 formed at an inclination angle of 45 degrees is deflected toward the probe by 30 degrees with respect to the ultrasonic direction, and the ultrasonic waves hit the ultrasonic reflecting surface 104 formed at an oblique angle of 60 degrees after exiting the probe. B) immediately returns to the probe.

Therefore, the reflection efficiency at the needle inclination angle of 60 degrees according to the present invention is calculated as 100% because the number of reflected beams returned to the probe when the number of ultrasonic incident beams is 30 is 30.

On the other hand, the bottom of the ultrasonic reflection surface (104, 105) formed in the ultrasonic reflection groove 101 according to the present invention is a plane, the length of the groove is uniform, there is no inclination, and the ultrasonic waves collide because they make a vertical angle with respect to the incident ultrasonic beam As soon as it returns to the probe, the cross-sectional reflection efficiency in the longitudinal direction of the needle is 100%.

 Therefore, the two-dimensional reflection efficiency of the present invention is calculated as the following formula "two-dimensional reflection efficiency = reflection efficiency of the longitudinal long axis cross-section x transverse cross-sectional reflection efficiency in the longitudinal direction" is as shown in Table 7 below.

Needle tilt angle Longitudinal reflection efficiency Transverse section reflection efficiency 2D reflection efficiency 30 degrees 100% 100% 100% 45 degrees 100% 100% 100% 60 degrees 100% 100% 100%

As shown in Table 7, the two-dimensional reflection efficiency of the needle having the ultrasonic reflection groove 101 used in the ultrasound-guided interventional procedure according to the present invention is 100% at all of the inclination angles of 30 degrees, 45 degrees, and 60 degrees, respectively. .

This result is also confirmed in Tables 8 and 9 below, which are actual ultrasound images.

The ultrasound image photograph of the needle position according to various incidence angles of the general injection needle during the ultrasound guided procedure measured by the present inventors is shown in Table 8 below.

1-a: 24G needle 50 degree incident angle ultrasound 1-b: 24G needle 75 degree incident angle ultrasound

1-c: 21G needle 13 degree incident angle ultrasound 1-d: 21G needle 30 degree incident angle ultrasound

1-e: 21G needle 53 degree incident angle ultrasound 1-f: 21G needle 75 degree incident angle ultrasound

As shown in Table 8, the ultrasound image (1-a) of the general needle of the incidence angle of 24G 50 degrees is very difficult to distinguish the needle body is very faint like the arrow head.

In addition, the ultrasound image 1-b of a flat needle having an angle of incidence of 24G 75 degrees is very difficult to distinguish because the body of the needle is very faint like an arrow head.

The 21G needle 13-degree ultrasound image (1-c) clearly shows the needle.

The 30-degree ultrasound image of the 21G needle (1-d) has a blurred needle but the position can be confirmed.

The 53G needle 53-degree ultrasound image (1-e) shows a blurred, needleless, and blurred tip.

75-degree ultrasound image of the 21G needle (1-f) shows no needle

As such, the normal needle can be seen well from 0 to 20 degrees in ultrasound, but gradually fades with increasing increments above it, and the needle is very faint from around 30 degrees, and both needles 24G and 21G are well above 45 degrees. Invisible

On the other hand, the needle position ultrasound image photographs according to various angles of incidence of the injection needle is formed according to the present invention during the ultrasound guided procedure is shown in Table 9 below.

1-a: 24G needle 55 degree incident angle ultrasound 1-b: 24G needle 75 degree incident angle ultrasound

1-c: 21G needle 17 degree incident angle ultrasound 1-d: 21G needle 35 degree angle of incidence ultrasound

1-e: 21G needle 55 degree incident angle ultrasound 1-f: 21G scanning scale 75 degree incident angle ultrasound

As shown in the ultrasound image shown in Table 9, it can be seen that the position of the needle is clearly identified as compared to Table 8.

In addition to the present invention, the needle structure for producing the following effects in addition to the ultrasonic guided interventional procedure needle structure as described in Example 1 will be described through the accompanying drawings and the following examples.

4 is a perspective view of only the needle part, ii) is a longitudinal side cross-sectional view, and iii) is a lateral cross-sectional view.

Example 2 .

A needle hole 106 whose cross section is reverse tunnel type; Ultrasonic reflecting surfaces (104; 105) and the inclination angle of the needle needle outer diameter width in the longitudinal direction of the needle formed on the slope portion (100a), the two inclination angle toward the slope portion (100a) integrally adjacent The needle 100, in which the ultrasonic passing surface 103 of a predetermined inclination angle is connected to each other and has a polygonal ultrasonic reflecting groove 101 having a predetermined depth, has the same structure as in Example 1,

The openings at both sides of each of the ultrasonic reflection grooves 101 of the injection needle 100 are integrally formed with a reinforcement plate 102 having a predetermined thickness.

The needle 100 having the same structure as in Example 2 is applied to the needle having a relatively thicker thickness than 24G so that the skin or muscle tissue is not caught in the groove by the ultrasonic reflection groove 101 during the ultrasound-guided interventional procedure. At the same time, the needle strength was maintained.

5 is another perspective view of a third embodiment of the present invention, i) a perspective view of only the needle part, ii) a longitudinal side cross-sectional view, and iii) a lateral cross section.

Example  3.

A circular needle hole 106 is formed in an elliptical cross section; Ultrasonic waves having a polygonal shape having a predetermined depth are formed by connecting the ultrasonic reflection surfaces 104 and 105 in which two inclination angles are integrally adjacent to the short axis longitudinal upper surface of the needle having the slope portion 100a and the ultrasonic passing surface 103 having a predetermined inclination angle. Reflective groove 101 is formed with a needle 100 is formed.

As described above, the needle having an elliptical cross section is for preventing the strength of the needle from being broken due to the ultrasonic reflection groove 101.

Example  4.

6 shows an enlarged partial extract of another embodiment of the ultrasonic reflection groove 101 of the present invention

Iii) is an enlarged side view of the partial extraction of the ultrasonic reflecting groove consisting of the ultrasonic passing surface 107 and the ultrasonic reflecting surface 108 having an inclination angle of 45 degrees, and is suitable for the needle inclination angle of 30 degrees to 60 degrees,

Ii) is a partial enlarged side view of the ultrasonic reflection groove 110 composed of an ultrasonic passing surface 109 having an inclination angle of 30 degrees and an ultrasonic reflecting surface of an inclination angle of 60 degrees, and is suitable at a needle inclination angle of 45 degrees to 75 degrees,

Iii) is a partial enlarged side view of the ultrasonic reflecting groove 112 composed of an ultrasonic passing surface 111 having an inclination angle of 10 degrees and an ultrasonic reflecting surface of an inclination angle of 80 degrees. Real-time location identification effect of injection needle is excellent during the procedure.

On the other hand, Figure 6 is a schematic diagram of the injection needle consisting of a partial extraction enlarged side view of the ultrasonic reflection groove 101 consisting of an air passage groove 113 consisting of an ultrasonic pass surface 113 and an isosceles groove having a 30 degree inclination angle. It is disclosed in Table 10.

 As shown in the schematic diagram shown in Table 10, the needle formed with the air-enclosed groove 114 when the tissue is inserted into the tissue covers the inlet of the groove, but does not enter the inside of the groove, but only contains air.

Since ultrasonic waves do not pass through the air and reflect, the air in the grooves acts as a reflector, so the ultrasonic waves are directed to the probe regardless of the angle of the ultrasonic reflecting groove. I did it.

101: ultrasonic reflection groove
102: reinforcing plate
103; 107; 109; 111; 113: Ultrasonic Passing Surface
104; 105; 108; 110; 112: ultrasonic reflective surface
106: Injection needle hole
114: Air containment groove

Claims (4)

In the needle 100 of a predetermined standard, the needle hole hole 106 having a cross-section reverse tunnel type; and forming a plane of the needle outer diameter width in the longitudinal direction of the needle formed with the slope portion 100a, the needle formed In the plane, the two inclination angles toward the slope portion 100a are integrally adjacent to the ultrasonic reflection surfaces 104 and 105 and the ultrasonic passing surface 103 of a predetermined inclination angle made by shaving the wall of the groove hindering the ultrasonic progression is connected to a predetermined depth. Ultrasound-guided interventional procedure needle structure characterized in that the ultrasonic reflection groove 101 of the polygonal shape. According to claim 1, When the ultrasonic reflecting groove 101 has a maximum depth of 0.15 ~ 0.25 mm,
The inclination angle is an ultrasonic passing surface 103 of 30 degrees and an ultrasonic reflecting surface 104 or 105 of an inclination angle of 60 degrees or 45 degrees,
The ultrasonic passing surface 107 and the ultrasonic reflecting surface 108, each having an inclination angle of 45 degrees,
An ultrasonic passing surface 107 having an inclination angle of 30 degrees and an ultrasonic reflecting surface 108 having an inclination angle of 60 degrees,
Ultrasonic passing surface 111 made of an inclination angle of 10 degrees and ultrasonic reflecting surface 112 made of an inclination angle of 80 degrees,
Needle structure for ultrasound-guided interventional procedure characterized in that the inclination angle is provided by any one selected from the ultrasonic passage surface 113 and the trapezoid groove 114 consisting of an isosceles groove. delete delete

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