TW202337510A - Needle guidance device - Google Patents

Abstract

A needle guidance device is disposed on an ultrasound probe and configured to fix a needle. The needle guidance device includes a probe connecting structure, a first track, a first slide module, a second slide module, a second track, and a fixture. The probe terminal structure is disposed on the ultrasound probe. The first track is connected to the probe terminal structure. The first slide module is disposed on the first track. The first slide module is connected to the second slide module. The second track is passed through the second slide module. The fixture is disposed on the second track and configured to fix the needle. By the needle guidance device, the needle can be aligned with the vertical plane of the ultrasound probe.

Description

needle guide device

A needle guide device, especially a needle guide device used in ultrasound-guided surgery.

Freehand ultrasound-guided surgery is a commonly used procedure and is often used in tissue biopsies (Biopsy), such as breast tissue biopsies. During implementation, the operator needs to operate the ultrasound probe with one hand and operate the probe to penetrate the breast with the other hand, which requires the operator's hand-eye coordination ability. At the same time, ultrasonic detection is a two-dimensional detection. The operator needs to try to ensure that the probe coincides with the vertical plane of detection in order to accurately grasp the position of the probe, which greatly increases the difficulty of operation. At present, there are several technical means to try to solve the above problems, such as: 1. Side-attached guide device: Such as Civco - Ultrasound Needle Guides product line. This type uses plastic parts as the main body and is attached to the ultrasonic probe with fasteners. By matching the needle size tubular part, the needle remains coplanar with the ultrasonic scanning plane during the puncture process. However, its disadvantages are that it is difficult to observe the needle insertion point into the skin at the moment the needle is inserted, and the angle cannot be changed after it is set. For soft tissue parts (such as breasts), the range of movement is too low. 2. Linkage mechanism: such as Jackrit Suthakorn, Narucha Tanaiutchawoot, Cholatip Wiratkapan & Songpol Ongwattanakul(2018), Breast biopsy navigation system with an assisted needle holder tool and 2D graphical user interface, European Journal of Radiology Open Volume 5, 2018, Pages 93-101, (doi: 10.1016/j.ejro.2018.07.001), two connecting rods and buckles are used to keep the needle coplanar with the ultrasonic scanning plane during the puncture process. However, its disadvantages are that there is no rotation angle constraint, the position of the rod may block the line of sight, the stability of the plastic fastener is unknown, and plane deviation may occur. 3. Laser marking assistance: For example, Eric Chiwei Shiao & Po-Ling Kuo (2019), Two-Dimensional Laser-Align Device for Ultrasound-Guided Injection, J. Clin. Med., Volume 8, Issue 7 (July 2019) ( doi: 10.3390/jcm8071048), a planar laser device is installed on the ultrasonic probe to project a laser line segment coplanar with the ultrasonic scanning plane on the outside, allowing the user to align the needle plane. However, the disadvantage is that there is no actual physical constraint and effort is required to align the laser line segments with the needle. For parts with high mobility, an insufficiently flat surface can distort the laser line. 4. Optical positioning system, magnetic positioning system: such as Brainlab - Ultrasound Navigation product line, a more advanced and high-tech product line, uses optical spatial positioning or magnetic field spatial positioning to obtain the absolute position of the needle in space. Intraoperative imaging coupled with three views allows physicians to accurately grasp the spatial relationship between the surgical needle and the target. However, its disadvantage is that it is very expensive, requires a full set of integrated advanced instruments, and requires a lot of pre-production work. Typically used in cranial neurosurgery, not a good choice for breast surgical sections that require a large number of rapid sections. To sum up, there is no good and low-cost solution at present, so how to solve the above problems is worthy of consideration by those with ordinary knowledge in this field.

The purpose of the present invention is to provide a needle guide device that can allow the needle to coincide with the detection vertical plane of the ultrasonic probe, accurately grasp the position of the needle, significantly reduce the operator's hand-eye coordination requirements, and is simple to use and cost-effective. Lower advantages. The specific technical means are as follows: A needle guide device is provided on an ultrasonic probe and is suitable for fixing a needle. The needle guide device includes a probe end structure, a first slide rail, a first sliding module, and a second sliding module. module, a second slide rail and a clamp. One end of the first slide rail is disposed on the probe end structure. The first sliding module is sleeved on the first slide rail. The first sliding module includes a first base. The first base includes a plurality of first joining magnets, a plurality of first positioning holes and a plurality of first positioning holes. A certain positioning structure. The second sliding module is connected to the first sliding module. The second sliding module includes a second base. The second base includes a plurality of second joining magnets, a plurality of second positioning holes and a plurality of Second positioning structure. The second slide rail is disposed through the second sliding module. The clamp is disposed on the second slide rail and is suitable for fixing the needle. The needle coincides with a detection vertical plane of the ultrasonic probe. Wherein, the first positioning hole and the second positioning hole are arc-shaped holes. Wherein, the first sliding module and the second sliding module are connected with an angle difference, and the first positioning structure passes through the second positioning hole, and the second positioning structure passes through the first positioning hole, and the The first joining magnet and the second joining magnet are attracted to each other. As in the above needle guide device, the clamp further includes a first structure, a second structure and a plurality of clamp fixing elements. The first structure includes a slide rail groove and a first clamping part. The slide rail groove covers the side of the second slide rail. The second structure includes a second clamping portion. The clamp fixing element is disposed through the first structure, the second structure and the second slide rail. As in the above needle guide device, the second slide rail also includes a plurality of clamp holes. The above needle guide device, wherein the fixing element is a screw. The needle guide device as mentioned above, wherein the probe end structure further includes a plurality of clamping slots, the clamping slots are vertically arranged on the probe end structure, the extending directions of the clamping slots are parallel to each other, and the first slide The rail is arranged in the card slot. The needle guide device as mentioned above, wherein the probe end structure is arranged around the ultrasonic probe. The needle guide device as mentioned above, wherein the first sliding module further includes a first sliding block covering the side of the first slide rail so that the first sliding module can move on the first slide rail. ; The second sliding module also includes a second sliding block covering the side of the second slide rail so that the second sliding module can move on the second slide rail. As in the above needle guide device, the first base further includes a plurality of first fixing holes and a plurality of first latch holes. Wherein, the second base further includes a plurality of second fixing holes and a plurality of second latch holes. The first sliding module further includes a first button mechanism disposed on the first base. The first button structure includes a first body and a plurality of first pins. The first body is provided with a first fixed magnet. The first latch is disposed on the first body and passes through the first latch hole on the first base. The second sliding module further includes a second button mechanism disposed on the second base. The second button structure includes a second body and a plurality of second pins. The second main body is provided with a second fixed magnet. The second latch is disposed on the second body and passes through the second latch hole on the second base. Wherein, when the first button mechanism is pressed, the first button mechanism moves toward the second sliding module, and the first latch passes through the second fixing hole, and the first body of the first button mechanism and The first slide rail is in contact with the first fixed magnet and is attracted to the first slide rail. Wherein, when the second button mechanism is pressed, the second button mechanism moves toward the first sliding module, and the second latch passes through the first fixing hole, and the second body of the second button mechanism and The second slide rail is in contact with the second fixed magnet and is attracted to the second slide rail. As in the above needle guide device, the first fixing hole and the second fixing hole are arc-shaped holes. The needle guide device as mentioned above, wherein the first latch and the second latch further comprise a latch fixing element, and the first latch and the second latch are respectively connected to the second fixing element through the respective latch fixing element. The hole and the first fixing hole form a tight fit. The needle guide device as described above, wherein the latch fixing element includes a plurality of springs that expand outward along the radial direction of the first latch or the second latch.

Please refer to FIG. 1 , which is a schematic diagram of the needle guide device of the present invention. The needle guide device 100 of the present invention is installed on an ultrasonic probe 10 and is suitable for fixing a needle 20. The ultrasonic probe 10 is a probe for ultrasonic detection and is suitable for contact with the patient's skin. The needle 20 is a device for guiding the inspection probe, and the probe can extend from the needle 20 and pierce the patient's skin. The needle guide device 100 of the present invention can maintain a fixed angle difference between the needle 20 and the sonic wave probe 10 . The needle guide device 100 of the present invention includes a probe end structure 110, a first slide rail 120, a first sliding module 130, a second sliding module 140, a second slide rail 150 and a clamp 160. Among them, the probe end structure 110 is connected with the ultrasonic probe 10 . Specifically, the probe end structure 110 is disposed around the ultrasonic probe 10 . Furthermore, the probe end structure 110 also includes a plurality of card slots 111, and the first slide rail 120 is connected to one of the card slots 111. Furthermore, there is an angular difference θ between the extension direction of the card slot 111 and a detection horizontal plane 11 of the ultrasonic probe 10 (as shown in FIG. 5A ). A plurality of card slots 111 are vertically arranged on the probe end structure 10 . And the extending directions of each slot 111 are parallel to each other. As a result, the first slide rail 120 disposed on the card slot 111 also has an angle difference θ with a detection surface of the ultrasonic probe 10 . Furthermore, the side of the first slide rail 120 has a concave structure, which can cooperate with the first sliding block 134 (as shown in FIG. 2 ) in the first sliding module 130 to prevent the first sliding module 130 from sliding. The first slide rail 120 falls off. Please refer to Figure 2, which shows a partial schematic diagram of the needle guide device. The first sliding module 130 is sleeved on the first slide rail 120 and can move on the first slide rail 120 . The second sliding module 140 is connected to the first sliding module 130, and the second slide rail 150 is disposed through the second sliding module 140. Furthermore, the first sliding module 130 and the second sliding module 140 have the same features and are connected at different installation angles. The following describes the features and connections of the first sliding module 130 and the second sliding module 140. Way. Please refer to Figures 3A, 3B and 3C. Figures 3A and 3B show schematic diagrams of the first sliding module and the second sliding module. Figure 3C shows the first sliding module and the second sliding module. Schematic diagram of group connections. Since the first sliding module 130 and the second sliding module 140 have the same technical characteristics, in order to clearly explain the connection and interaction relationship between the first sliding module 130 and the second sliding module 140, different names and symbols are still used. In FIG. 3A and FIG. 3B , the symbols outside the brackets correspond to the first sliding module 130 , and the symbols inside the brackets correspond to the second sliding module 140 . First, the first sliding module 130 will be described. Please refer to the symbols outside the brackets in FIGS. 3A and 3B . The first sliding module 130 includes a first base 131 , a first button mechanism 132 and a first limiting mechanism 133 . The first button mechanism 132 is disposed on the first base 131 , and the first limiting mechanism 133 covers part of the first button mechanism 132 and is connected to the first base 131 . The first limiting mechanism 133 can prevent the first button mechanism 132 from being Detached from the first base 131 . The first base 131 includes a plurality of first joining magnets 1311, a plurality of first positioning holes 1312, a plurality of first fixing holes 1313, a plurality of first latch holes 1314 and a plurality of first positioning structures 1315. The first engaging magnet 1311 is provided on the first base 131 . Specifically, the first base 131 also has a number of grooves 1311' (see FIG. 3B) equivalent to the number of the first engaging magnets 1311. The openings of these grooves 1311' are disposed facing the first button mechanism 132, and the third An engagement magnet 1311 is disposed in these grooves 1311'. The first positioning hole 1312 , the first fixing hole 1313 and the first latch hole 1314 are provided on the first base 131 and penetrate the first base 131 . Among them, the first positioning hole 1312 and the first fixing hole 1313 are arc-shaped holes, and are arc-shaped holes formed with the center point of the first base 131 as the center of the circle, and the first fixing hole 1313 is larger than the first fixing hole 1312. The function of arc-shaped holes will be discussed later. The first latch hole 1314 is disposed at the edge of the first base 131 . Furthermore, the first latch hole 1314 is disposed corresponding to the first latch 1322 on the first button structure 132 . The first positioning structure 1315 (shown in FIG. 3C ) is disposed on the first base 131 and is disposed on the other side relative to the first fixed joint magnet 1311 , that is to say, the first joint magnet 1311 is connected to the first fixed joint magnet 1311 . The positioning structures 1315 are respectively arranged on different surfaces. The first positioning structure 1315 is a cylindrical structure and protrudes from the first base 131 . In one embodiment, screws are provided on the first base 131 to form the first positioning structures 1315 , and the number of the first positioning structures 1315 is the same as the first positioning holes 1313 . In addition, in this embodiment, the first sliding block 134 has a screw hole corresponding to the first positioning structure 1315. Therefore, the first structure 1315 penetrates the first base 131 and is locked into the first sliding block 134. The first sliding block 134 is fixed on the first base. The first button mechanism 132 includes a first body 1321 and a plurality of first latches 1322. In this embodiment, the first body 1321 is a long structure, and there are two first latches 1322, which are respectively provided on the first body. The two end points of 1321, the first body 1321 and the first latch 1322 make the first button mechanism 132 have a slightly C-shaped shape when viewed from the side. In addition, the first latch 1322 passes through the first fixing hole 1314. When the first slide rail 120 is combined with the first sliding module 130, the first slide rail 120 will pass through the space defined below the first body 1321 of the first button mechanism 132 and between the two first latch pins 1322. . The first body 1321 is also provided with a first fixed magnet 1323. When the first button mechanism 132 is pressed, the first button mechanism 132 moves toward and contacts the first slide rail 120, and the first fixed magnet 1323 will attract the first slide rail. 120 to produce a fixing effect so that the first sliding module 130 cannot move on the first slide rail 120 . In one embodiment, the first sliding module 130 further includes a first sliding block 134 covering the side of the first sliding rail 120 so that the first sliding module 130 can move on the first sliding rail 120 . Specifically, the first slider 134 is disposed on the first base 131, and the first slider 134 has a structure consistent with the shape of the side of the first slide rail 120, thereby covering the side of the first slide rail 120, so as to The first sliding module 130 is allowed to move on the first slide rail 120 via the first slide block 134 . Next, the second sliding module 140 will be described. Please refer to the symbols in brackets in FIG. 3A and FIG. 3B . The second sliding module 140 includes a second base 141, a second button mechanism 142 and a second limiting mechanism 143. The second button mechanism 142 is disposed on the second base 141 , and the second limiting mechanism 143 covers part of the second button mechanism 142 and is connected to the second base 141 . The second limiting mechanism 143 can prevent the second button mechanism 142 from Detached from the second base 141 . The second base 141 includes a plurality of second engaging magnets 1411, a plurality of second positioning holes 1412, a plurality of second fixing holes 1413, a plurality of second latch holes 1414 and a plurality of second positioning structures 1415. The second engaging magnet 1411 is provided on the second base 141 . Specifically, the second base 141 also has a number of grooves 1411' (see FIG. 3B) equivalent to the number of the second engagement magnets 1411. The openings of these grooves 1411' are disposed facing the second button mechanism 142, and the third Two engaging magnets 1411 are disposed in these grooves 1411'. The second positioning hole 1412 , the second fixing hole 1413 and the first latch hole 1414 are provided on the second base 141 and penetrate the second base 141 . The second positioning hole 1412 and the first fixing hole 1413 are arc-shaped holes formed with the center point of the second base 141 as the center of the circle. The second fixing hole 1413 is larger than the first fixing hole 1412, and the function of the arc-shaped hole will be discussed later. The second latch hole 1414 is provided at the edge of the second base 141. Further, the second latch hole 1414 corresponds to the second latch 1422 on the second button structure 142. The second positioning structure 1415 (shown in FIG. 3C ) is disposed on the second base 141 and is disposed on the other side relative to the second fixed joint magnet 1411 , that is to say, the second fixed joint magnet 1411 is connected to the second fixed joint magnet 1411 . A positioning structure 1415 is respectively provided on different surfaces. The second positioning structure 1415 is a cylindrical structure and protrudes from the second base 141 . In one embodiment, screws are provided on the second base 141 to form the second positioning structures 1415, and the number of the second positioning structures 1415 is the same as the second positioning holes 1413. The second button mechanism 142 includes a second body 1421 and a plurality of second latches 1422. In this embodiment, the second body 1421 is a long structure, and there are two second latches 1422, which are respectively provided on the second body. The two end points of 1421, the second main body 1421 and the second latch 1422 make the second button mechanism 142 have a slightly C-shaped shape when viewed from the side. In addition, the second latch 1422 passes through the second fixing hole 1414. When the second slide rail 150 is combined with the second sliding module 140, the second slide rail 150 will pass through the space defined between the bottom of the second body 1421 of the second button mechanism 142 and the middle of the two second latch pins 1422. . The second main body 1421 is also provided with a second fixed magnet 1423. When the second button mechanism 142 is pressed, the second button mechanism 142 moves toward and contacts the second slide rail 150, and the second fixed magnet 1423 will attract the second slide rail. 140 to produce a fixing effect so that the second sliding module 140 cannot move on the second slide rail 150 . In one embodiment, the second sliding module 140 further includes a second sliding block 144 covering the side of the second sliding rail 150 so that the second sliding module 140 can move on the second sliding rail 150 . Specifically, the second slider 144 is disposed on the second base 141, and the second slider 144 has a convex structure consistent with the side of the second slide rail 150, thereby covering the side of the second slide rail 150 to The second sliding module 140 is allowed to move on the second slide rail 150 via the second slide block 144 . Please refer to FIG. 3C. The first sliding module 130 is connected to the second sliding module 140, and is connected by the first base 131 of the first moving module 130 and the second base 141 of the second sliding module 140. connection. Furthermore, the first sliding module 130 and the second sliding module 140 are connected with an angle difference. In this embodiment, this angle difference is 90 degrees. Please refer to FIG. 3D , which is a schematic diagram after the first sliding module 130 and the second sliding module 140 are connected. In FIG. 3D , only some components are drawn to illustrate their connection relationships. When connected, the first positioning structure 1315 of the first sliding module 130 passes through the second positioning hole 1413 of the second sliding module 140, and the second positioning structure 1415 of the second sliding module 140 passes through the first positioning structure 1315. In the first positioning hole 1313, the first joining magnet 1311 of the first sliding module 130 and the second joining magnet 1411 of the second sliding module 140 are magnetically attracted to each other and fixed. Please refer to FIG. 3H . FIG. 3H shows a schematic diagram of the arrangement of the first joining magnet 1311 and the second joining magnet 1411 . In FIG. 3H, since the first joining magnet 1311 and the second joining magnet 1411 are respectively disposed on the first base 131 and the second base 141, it is not possible to directly connect the first base 131 and the second base 141. The first joining magnet 1311 and the second joining magnet 1411 are visible, so they are represented by dotted lines. In this embodiment, there are four first joining magnets 1311 and four second joining magnets 1411 respectively. And when set, the polarities of the magnets will be staggered. For example, the first joining magnet 1311a will have its S pole facing the second sliding module 140, and the first joining magnet 1311b on the right and below the periphery will have its N pole facing the second sliding module. Group 140. In addition, the second joining magnet 1411b corresponding to the first joining magnet 1311a has its N pole facing the first sliding module 130 . In this way, when the first sliding module 130 and the second sliding module 140 are joined, the polarities of the first joining magnet 1311 and the second joining magnet 1411 can be used to attract each other to ensure that the first sliding module 130 and the second sliding module 140 are perpendicular to each other, and use same-polarity repulsion to prevent the first sliding module 130 and the second sliding module 140 from being joined at an incorrect angle. After being connected, when the first button mechanism 132 is pressed, the first button mechanism 132 moves toward the second sliding module 140, and the first latch 1322 passes through the second fixing hole 1413, and the first body of the first button mechanism 132 1321 contacts the first slide rail 120, and the first fixed magnet 1323 is attracted to the first slide rail 120 to fix the first sliding module 130 on the first slide rail 120. When the second button mechanism 142 is pressed, the second button mechanism 142 moves toward the first sliding module 130, and the second latch 1422 passes through the first fixing hole 1313, and the second body 1421 of the second button mechanism 142 and the second The slide rail 150 is in contact, and the second fixed magnet 1423 is attracted to the second slide rail 150 to fix the second sliding module 140 on the second slide rail 150 . Please refer to FIGS. 3E to 3G . FIG. 3E shows a schematic diagram of the latch fixing component 170 . FIG. 3F and FIG. 3G are schematic diagrams when the first button mechanism 132 or the second button mechanism 142 is pressed. In one embodiment, the first latch 1322 and the second latch 1422 further include a plurality of latch fixing elements 170 respectively. The first latch 1322 and the second latch 1422 are respectively connected to the second fixing hole 1413 and the second fixing hole 1413 through the latch fixing elements 170 . The first fixing hole 1313 forms a tight fit. Specifically, the latch fixing element 170 further includes a plurality of springs that expand outward along the radial direction of the first latch 1322 or the second latch 1422 . Therefore, when the first button mechanism 132 or the second button mechanism 142 is pressed (as shown in Figure 3G), after the first latch 1322 is inserted into the second fixing hole 1413, the latch fixing element 170 is in close contact with the inner edge of the second fixing hole 1413. Let the first latch 1322 and the second fixing hole 1413 form a tight fit. When the second latch 1422 is inserted into the first fixing hole 1313, the latch fixing element 170 is in close contact with the inner edge of the first fixing hole 1313, allowing the second latch 1422 to form a tight fit with the first fixing hole 1313. In this way, the first fixing hole 1313 can be connected tightly. The button mechanism 132 is fixed on the first base 131 , and the second button mechanism 142 is fixed on the second base 141 . In addition, the latch fixing element 170 does not cover the end of the first latch 1322 or the second latch 1422, so when the first button mechanism 132 or the second button mechanism 142 is not pressed, only the first latch 1322 or the second latch 1422 The end of the first fixing hole 1313 or the second fixing hole 1412 extends into the first fixing hole 1313 or the second fixing hole 1412 (see FIG. 3F). At this time, the first latch 1322 or the second latch 1422 can still move in the first fixing hole 1313 or the second fixing hole 1412. In this embodiment, since the first positioning hole 1312, the first fixing hole 1313, the second fixing hole 1412 and the second positioning hole 1413 are arc-shaped holes, the first sliding module 130 and the second sliding module 140 are After being coupled, the angle of the first sliding module 130 or the second sliding module 140 can be rotated by a small amount through external force. Specifically, the rotation is performed with the center of the first sliding module 130 or the second sliding module 140 as the center of the circle, and the rotatable angle is, for example, 25 degrees. At this time, the second positioning structure 1415 can move within the first positioning hole 1312, and the first positioning structure 1315 can move within the second positioning hole 1412. The second latch 1422 can move in the first fixing hole 1313, and the first latch 1322 can move in the second fixing hole 1413. In addition, the rotation angle of the first sliding module 130 or the second sliding module 140 is not limited to 25 degrees. The first positioning hole 1312, the first fixing hole 1313, the second fixing hole 1412 and the second fixing hole 1312 can be modified according to different needs. The size of the two positioning holes 1413 is used to adjust the rotation angle of the first sliding module 130 or the second sliding module 140. Please refer to Figure 4A and Figure 4B. Figures 4A and 4B are schematic diagrams of the clamp. The clamp 160 is disposed on the second slide rail 150 , and the clamp 160 is suitable for fixing the needle 20 . The clamp 160 includes a first structure 161 , a second structure 162 and a plurality of clamp fixing elements 163 . Among them, the first structure 161 includes a first clamping part 1611 and a slide rail groove 1612. The entire first structure 161 is slightly C-shaped to form a first clamping portion 1611 for setting the needle 20 . The slide rail groove 1612 is disposed relative to the first clamping portion 1611 and covers the side surface of the second slide rail 150 . The entire second structure 162 is slightly C-shaped to form the second clamping portion 1621 . The opening of the second clamping part 1621 is coupled with the opening of the first clamping part 1611 to form a space for accommodating the needle 20 . The clamp fixing element 163 is disposed through the first structure 161, the second structure 162 and the second slide rail 150, so the clamp fixing element 163 fixes the first structure 161, the second structure 162 and the second slide rail 150 so that It cannot slide on the second slide rail 150, and at the same time, the needle 20 can be firmly fixed on the opening of the second clamping part 1621 and the opening of the first clamping part 1611. In this embodiment, the clamp fixing element 163 is a screw. In one embodiment, the second slide rail 150 further includes a plurality of clamp holes 151 , and the clamp fixing elements 163 pass through the clamp holes 151 to fix the clamp 160 on the second slide rail 150 . The structure and components of the needle guide device 100 of the present invention are described above, and the application mode of the needle guide device 100 will be described below. Please refer to FIGS. 5A to 5C . FIG. 5A is a schematic side view of the needle guide device 100 of the present invention. Figure 5B shows a schematic diagram of detecting a vertical plane, and Figure 5C shows a bottom view of the needle and the ultrasonic probe. The needle guide device 100 is disposed on the ultrasonic probe 10 via the probe end structure 110 . At this time, the first slide rail 120 can be optionally installed on one of the slots 111, whereby the vertical position of the needle 20 can be adjusted. Furthermore, the first sliding module 130 can move on the first slide rail 120 , that is, move along the direction 31 , thereby moving the horizontal position of the needle 20 . At the same time, the second slide rail 150 is moved upward, that is, the second slide rail 150 can move along the direction 32 to adjust the vertical position of the needle 20 . The second sliding module 140 can also be rotated to adjust the angle of the second slide rail 150 in the direction 33 . By adjusting the direction of the needle 20 in the above directions 31, 32 and 33 and confirming the direction of the needle 20, the first button mechanism 132 and the second button mechanism 142 can be pressed to fix the first sliding module 130 on the first On the slide rail 120, the second sliding module 140 is fixed on the second slide rail 150, and the angle between the first sliding module 130 and the second sliding module 140 is fixed, thereby fixing the needle 20 and the ultrasonic probe. 10 angle difference. Through the above-mentioned needle guide device 100, the extension direction 21 of the needle 20 (that is, the direction in which the probe extends) and the detection horizontal plane 11 of the ultrasonic probe 10 can maintain a fixed angle difference θ, and ensure the stability of the needle 20. The extension direction 21 can be locked within the range of the detection vertical plane 12 (as shown in Figure 5B), while keeping the extension direction 21 of the needle 20 parallel and coincident with the detection vertical plane 12 (as shown in Figure 5C). In this way, when the probe is inserted, ultrasound can be used to more accurately confirm the position of the probe. Compared with the traditional method of operating the ultrasonic probe 10 with one hand and operating the needle 20 with the other hand, and manually positioning the needle 20 and the detection vertical plane 12 of the ultrasonic probe 10 to remain parallel and coincident, the needle guide device 100 of the present invention can It effectively reduces the requirements for the operator's hand-eye coordination and greatly reduces the difficulty of ultrasound-guided surgery. In addition, the needle guide device 100 of the present invention also has the advantages of simple operation, simple structure, and low cost. The invention is described above, but it is not intended to limit the scope of the patent rights claimed for this invention. The scope of patent protection shall depend on the appended patent application scope and its equivalent fields. Any changes or modifications made by those with ordinary knowledge in the art without departing from the spirit or scope of this patent shall be equivalent changes or designs completed within the spirit disclosed in this invention, and shall be included in the following patent application scope. within.

10: Ultrasonic probe 11: Detect horizontal plane 100: Needle guide device 110: Probe end structure 111:Card slot 120:First slide rail 130: The first sliding module 131:First pedestal 1311, 1311a, 1311b: first bonding magnet 1311’: Groove 1312: First positioning hole 1313: First fixed hole 1314: First latch hole 1315: First positioning structure 132: First button structure 1321:First subject 1322:First latch 1323: First fixed magnet 133:First restriction agency 134: First slider 140: Second sliding module 141:Second pedestal 1411, 1411a, 1411b: Second bonding magnet 1411’: Groove 1412: Second positioning hole 1413:Second fixed hole 1414: Second latch hole 1415: Second positioning structure 142: Second button structure 1421:Second subject 1422:Second pin 1423:Second fixed magnet 143:Second restriction agency 144: Second slider 150:Second slide rail 151: Clamp fixing hole 160: Fixture 161:First structure 1611: First clamping part 1612: Slide rail groove 162:Second structure 1621: Second clamping part 163: Clamp fixing components 170:Latch fixing element 20:Needles 21:Extension direction 31, 32, 33: Direction θ: Angle difference

Figure 1 shows a schematic diagram of the needle guide device of the present invention. Figure 2 shows a partial schematic diagram of the needle guide device. 3A and 3B are schematic diagrams of the first sliding module and the second sliding module. FIG. 3C shows a schematic diagram of the connection between the first sliding module and the second sliding module. FIG. 3D shows a schematic diagram of the first sliding module and the second sliding module being connected. Figure 3E shows a schematic diagram of the latch fixing component. 3F and 3G are schematic diagrams when the first button mechanism or the second button mechanism is pressed. FIG. 3H shows a schematic diagram of the arrangement of the first joining magnet and the second joining magnet. Figures 4A and 4B are schematic diagrams of the clamp. Figure 5A shows a schematic side view of the needle guide device of the present invention. Figure 5B shows a schematic diagram of detecting a vertical plane. Figure 5C shows a schematic bottom view of the needle and the ultrasonic probe.

10: Ultrasonic probe

100: Needle guide device

110: Probe end structure

111:Card slot

120:First slide rail

130: The first sliding module

140: Second sliding module

150:Second slide rail

160: Fixture

20:Needles

Claims (11)

A needle guide device is provided on an ultrasonic probe and is suitable for fixing a needle. The needle guide device includes: A probe end structure is connected to the ultrasonic probe; a first slide rail, one end of which is provided on the probe end structure; A first sliding module set on the first slide rail. The first sliding module includes a first base. The first base includes a plurality of first joining magnets, a plurality of first positioning holes and a plurality of first positioning holes. a first positioning structure; A second sliding module is connected to the first sliding module. The second sliding module includes a second base. The second base includes a plurality of second joining magnets, a plurality of second positioning holes, and a second sliding module. Multiple second positioning structures: A second slide rail is provided through the second sliding module; and A clamp is provided on the second slide rail and is suitable for fixing the needle, which coincides with a detection vertical plane of the ultrasonic probe; Wherein, the first positioning hole and the second positioning hole are arc-shaped holes; Wherein, the first sliding module and the second sliding module are connected with an angle difference, and the first positioning structure passes through the second positioning hole, and the second positioning structure passes through the first positioning hole, and the The first joining magnet and the second joining magnet are attracted to each other. The needle guide device according to claim 1, wherein the clamp further includes: a first structure, including: a slide rail groove covering the side of the second slide rail; and a first clamping part; a second structure including a second clamping portion; and A plurality of clamp fixing elements are provided through the first structure, the second structure and the second slide rail. The needle guide device of claim 2, wherein the second slide rail further includes a plurality of clamp holes. The needle guide device of claim 3, wherein the fixing element is a screw. The needle guide device according to claim 1, wherein the probe end structure further includes a plurality of card slots, the card slots are vertically arranged on the probe end structure, and the extending directions of the card slots are parallel to each other, The first slide rail is disposed in the card slot. The needle guide device of claim 1, wherein the probe end structure is arranged around the ultrasonic probe. The needle guide device according to claim 1, wherein the first sliding module further includes a first sliding block covering the side of the first sliding rail, so that the first sliding module can move on the first The second sliding module also includes a second sliding block covering the side of the second sliding rail, so that the second sliding module can move on the second sliding rail. The needle guide device according to claim 1, wherein the first base further includes a plurality of first fixing holes and a plurality of first latch holes; Wherein, the second base further includes a plurality of second fixing holes and a plurality of second latch holes; Wherein, the first sliding module also includes a first button mechanism, which is disposed on the first base. The first button structure includes: a first body provided with a first fixed magnet; and A plurality of first latch pins are provided on the first body and pass through the first latch holes on the first base; Wherein, the second sliding module also includes a second button mechanism, which is disposed on the second base. The second button structure includes: a second body provided with a second fixed magnet; and A plurality of second pins are provided on the second body and pass through the second pin holes on the second base; Wherein, when the first button mechanism is pressed, the first button mechanism moves toward the second sliding module, and the first latch passes through the second fixing hole, and the first body of the first button mechanism and The first slide rail is in contact, and the first fixed magnet is attracted to the first slide rail; Wherein, when the second button mechanism is pressed, the second button mechanism moves toward the first sliding module, and the second latch passes through the first fixing hole, and the second body of the second button mechanism and The second slide rail is in contact with the second fixed magnet and is attracted to the second slide rail. The needle guide device according to claim 8, wherein the first fixing hole and the second fixing hole are arc-shaped holes. The needle guide device of claim 8, wherein the first latch and the second latch further comprise a latch fixing element, and the first latch and the second latch are respectively connected to each other via the respective latch fixing element. The second fixing hole and the first fixing hole form a tight fit. The needle guide device of claim 10, wherein the latch fixing element includes a plurality of springs that expand outward along the radial direction of the first latch or the second latch.

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