Positioning structure of ultrasonic biopsy needle and positioning method thereof

Abstract

A positioning structure of an ultrasonic biopsy needle and a positioning method thereof, the ultrasonic biopsy needle comprising a tube sheath, a front handle, an extension rod and a rear handle, the positioning structure being arranged on the ultrasonic biopsy needle and comprising a first sliding positioner, a first light-emitting component, a second sliding positioner, a second light-emitting component and a processor, the first sliding positioner being connected to the front handle, the second sliding positioner being slidably arranged on the extension rod, the processor being arranged in the rear handle, when the processor receives a signal that the tube sheath contacts a target object, the processor lights up one of the first light-emitting diode components for a user to operate a first positioning wrench, when a second light-transmitting plate contacts a first light-transmitting plate, the processor turns off the first light-emitting diode component, when the processor receives a target object depth signal, the processor lights up one of the second light-emitting diode components for the user to operate a second positioning wrench, and when a fourth light-transmitting plate contacts a third light-transmitting plate, the processor turns off the second light-emitting diode component.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultrasound biopsy needles, and particularly relates to a positioning structure of an ultrasound biopsy needle capable of reducing user burden and prolonging service life of the ultrasound biopsy needle. BACKGROUND

[0002] The existing ultrasound biopsy needle is often used in combination with an ultrasound scanning module to sample specific tissues or cells, such as an endoscopic ultrasonography (EUS) or an endobronchial ultrasonography (EBUS). The ultrasound biopsy needle can be used to sample target tissues or lesion cells in a fine needle aspiration (FNA) or fine needle aspiration biopsy (FNB) manner, and can also reduce trauma to patients or subjects.

[0003] However, the conventional ultrasound biopsy needle is usually positioned by a screw. Such a screw-type biopsy needle is difficult to lock, and needs to be rotated to a specific angle to be unlocked when the locking is released. This not only increases the operation time, but also easily causes the screw to loosen and cause non-target tissues or cells to be injured after long-term or multiple use. In addition, the operation of the conventional ultrasound biopsy needle requires long-term concentration of the user, and repeated rotation of the screw for adjustment of the ultrasound biopsy needle easily causes user burden and increases sampling time, and easily increases the pain of patients or subjects. In addition, although automatic control technology is applied to the positioning of the ultrasound biopsy needle, a large number of new electronic components (such as sensors, micro-motors, speed reduction and transmission assemblies, etc.) are needed. The risk of these new electronic components to the human body is not clear, and it is difficult to obtain registration and filing of medical device products, and the practicability is poor. Therefore, there is still a need to provide a positioning structure of an ultrasound biopsy needle to solve the problems of the prior art.

[0004] The background section is used to assist in understanding the content of the present application, and therefore the content disclosed in the background section may include some prior art that is not known to those skilled in the art. The content disclosed in the background section does not represent the problems to be solved by the content or one or more embodiments of the present application, and is not known or recognized by those skilled in the art before the present application is filed. SUMMARY

[0005] According to the defects of the prior art, the present application aims to provide a positioning structure of an ultrasonic biopsy needle, which can reduce the burden of users and help users to intuitively and quickly complete the positioning work of the ultrasonic biopsy needle.

[0006] Another object of the present application is to provide a positioning structure of an ultrasonic biopsy needle, which can prolong the service life of the ultrasonic biopsy needle.

[0007] To achieve the above object, the present application provides a positioning structure of an ultrasonic biopsy needle, the ultrasonic biopsy needle comprising a tube sheath, a front handle, an extension rod and a rear handle, the extension rod comprising a first end, a second end opposite to the first end, a containing space, a plurality of first scale holes and a plurality of second scale holes, one end of the tube sheath being fixedly connected to the front handle, the front handle being slidably sleeved on the first end of the extension rod, the rear handle being slidably sleeved on the second end of the extension rod, the positioning structure being arranged on the ultrasonic biopsy needle, the positioning structure comprising a first sliding positioner, a first light-emitting assembly, a second sliding positioner, a second light-emitting assembly and a processor, the first sliding positioner being connected to the front handle, the first sliding positioner comprising a first positioning wrench and a first positioning block, the first positioning wrench being rotatably connected to the front handle through a rotating shaft, wherein when the first positioning wrench is turned, the first positioning wrench pushes the first positioning block to make the first positioning block abut against the extension rod, so that the front handle is positioned on the extension rod, the first light-emitting assembly being at least partially arranged in the containing space and adjacent to the first end, the front handle further having a first window to expose at least part of the first light-emitting assembly, the first light-emitting assembly comprising a first circuit board, a plurality of first light-emitting diode assemblies and a plurality of first pressure sensors, the first circuit board being arranged in the containing space, the first circuit board comprising a first surface and a second surface opposite to the first surface, wherein the first surface faces the plurality of first scale holes, the plurality of first light-emitting diode assemblies being arranged on the first surface to make the plurality of first light-emitting diode assemblies emit light towards the plurality of first scale holes respectively, the number of a plurality of first light-transmitting plates being equal to the number of the plurality of first light-emitting diode assemblies, wherein each first light-transmitting plate is respectively embedded in each first scale hole and respectively contacts each first light-emitting diode assembly, and each first light-transmitting plate can respectively receive and transmit the light emitted by each first light-emitting diode assembly, the plurality of first pressure sensors being arranged on the second surface, wherein the number of the plurality of first pressure sensors is the same as the number of the plurality of first light-emitting diode assemblies and the number of the plurality of first light-transmitting plates, and each first pressure sensor is located at each first light-emitting diode assembly, wherein the first positioning wrench further comprises a second light-transmitting plate, and when a user operates the first positioning wrench, the second light-transmitting plate contacts the first light-transmitting plate to make the light emitted by the first light-emitting diode assembly sequentially pass through the first light-transmitting plate and the second light-transmitting plate, the second sliding positioner being slidably arranged on the extension rod and located between the front handle and the rear handle, wherein the second sliding positioner comprises a second positioning wrench and a second positioning block, the second positioning wrench being rotatably connected to the second sliding positioner through a rotating shaft, wherein when the second positioning wrench is turned, the second positioning wrench pushes the second positioning block to make the second positioning block abut against the extension rod, so that the second sliding positioner is positioned on the extension rod, the second light-emitting assembly being at least partially arranged in the containing space and adjacent to the second end, the second sliding positioner having a second window to expose at least part of the second light-emitting assembly, the second light-emitting assembly comprising a second circuit board, a plurality of second light-emitting diode assemblies, a plurality of second light-transmitting plates and a plurality of second pressure sensors, the second circuit board being arranged in the containing space,The second circuit board includes a third surface and a fourth surface opposite to the third surface, wherein the third surface faces the second scale holes, a plurality of second LED components are arranged on the third surface so that each second LED component emits light towards the plurality of second scale holes, the number of the plurality of second light-transmitting plates is equal to the number of the plurality of second LED components, wherein each second light-transmitting plate is embedded in each second scale hole and contacts each second LED component, and each second light-transmitting plate can receive the light emitted by each second LED component, a plurality of second pressure sensors are arranged on the fourth surface, wherein the number of the plurality of second pressure sensors is the same as the number of the plurality of second LED components and the number of the plurality of second light-transmitting plates, and each second pressure sensor is located at each second LED component, a processor is arranged in the rear handle, wherein the processor is electrically connected to the plurality of first LED components, the plurality of second LED components, the plurality of first pressure sensors, and the plurality of second pressure sensors, and the processor is also electrically connected to the ultrasonic endoscope, wherein when the processor receives a signal that the tube sheath contacts the target object from the ultrasonic endoscope, the processor transmits a first light-emitting signal to one of the first LED components, the first LED component emits light according to the first light-emitting signal to allow the user to operate the first positioning wrench to position the front handle, and when the second light-transmitting plate on the first positioning wrench contacts the first light-transmitting plate, the first pressure sensor corresponding to the first light-transmitting plate transmits a first pressure signal to the processor to make the processor turn off the first LED component, wherein when the processor receives a target object depth signal from the ultrasonic endoscope, the processor transmits a second light-emitting signal to one of the second LED components to allow the user to operate the second positioning wrench to position the second sliding positioner, and when the fourth light-transmitting plate on the second positioning wrench contacts the third light-transmitting plate, the second pressure sensor corresponding to the third light-transmitting plate transmits a second pressure signal to the processor to make the processor turn off the second LED component.

[0008] In a more preferred embodiment, the second light-transmitting plate has a convex structure, and when the user operates the first positioning wrench to position the front handle, the second light-transmitting plate contacts the first light-transmitting plate through the convex structure to make the first pressure sensor corresponding to the first light-transmitting plate transmit a first pressure signal to the processor.

[0009] In a more preferred embodiment, the fourth light-transmitting plate has a convex structure, and when the user operates the second positioning wrench to position the second sliding positioner, the fourth light-transmitting plate contacts the third light-transmitting plate through the convex structure to make the second pressure sensor corresponding to the third light-transmitting plate transmit a second pressure signal to the processor.

[0010] In a preferred embodiment, the first positioning lever further comprises a first hook, the front handle further comprises a first slot, and when the user operates the first positioning lever, the first positioning lever is inserted into the first slot through the first hook to position the relative position of the first positioning lever and the front handle.

[0011] In a preferred embodiment, the front handle further comprises a first positioning hole, the first positioning hole is arranged in the front handle and between the first positioning lever and the telescopic rod, the first positioning block is slidably arranged in the first positioning hole, and the first elastic structure is arranged in the first positioning hole and respectively contacts the first positioning block and the telescopic rod, wherein when the user operates the first positioning lever and inserts the first hook into the first slot, the first positioning block forces the first elastic structure to store elastic potential energy.

[0012] In a preferred embodiment, the second positioning lever further comprises a second hook, the second sliding positioner further comprises a second slot, and when the user operates the second positioning lever, the second positioning lever is inserted into the second slot through the second hook to position the relative position of the second positioning lever and the second sliding positioner.

[0013] In a preferred embodiment, the second sliding positioner further comprises a second positioning hole and a second elastic structure, the second positioning hole is arranged in the second sliding positioner and between the second positioning lever and the telescopic rod, the second positioning block is slidably arranged in the second positioning hole, and the second elastic structure is arranged in the second positioning hole and respectively contacts the second positioning block and the telescopic rod, wherein when the user operates the second positioning lever and inserts the second hook into the second slot, the second positioning block forces the second elastic structure to store elastic potential energy.

[0014] In a preferred embodiment, the telescopic rod further comprises a needle set channel, wherein when the second light transmission plate on the first positioning lever contacts the first light transmission plate, the first pressure sensor is pushed to contact the needle set channel to transmit a first pressure signal to the processor.

[0015] In a preferred embodiment, when the fourth light transmission plate on the second positioning lever contacts the third light transmission plate, the second pressure sensor is pushed to contact the needle set channel to transmit a second pressure signal to the processor.

[0016] In a preferred embodiment, the positioning structure further comprises a power supply, the power supply is arranged in the rear handle, and the power supply supplies power to the processor, the plurality of first light-emitting diode assemblies, the plurality of second light-emitting diode assemblies, the plurality of first pressure sensors, and the plurality of second pressure sensors, wherein when the processor receives the first pressure signal, the processor controls the power supply to stop supplying power to the first light-emitting diode assemblies, and when the processor receives the second pressure signal, the processor controls the power supply to stop supplying power to the second light-emitting diode assemblies.

[0017] According to the above, in the embodiment of the present application, when the processor receives the signal of the sheath contacting the target object from the ultrasonic endoscope, the processor transmits the first light-emitting signal to one of the first light-emitting diode assemblies, the first light-emitting diode assemblies emit light according to the first light-emitting signal for the user to operate the first positioning wrench to position the front handle, when the second light-transmitting plate on the first positioning wrench contacts the first light-transmitting plate, the first pressure sensor corresponding to the first light-transmitting plate transmits the first pressure signal to the processor, so that the processor extinguishes the first light-emitting diode assembly, when the processor receives the target object depth signal from the ultrasonic endoscope, the processor transmits the second light-emitting signal to one of the second light-emitting diode assemblies, so that the user operates the second positioning wrench to position the second sliding positioner, and when the fourth light-transmitting plate on the second positioning wrench contacts the third light-transmitting plate, the second pressure sensor corresponding to the third light-transmitting plate transmits the second pressure signal to the processor, so that the processor extinguishes the second light-emitting diode assembly. In this way, the user can directly know the position that the first sliding positioner needs to be positioned according to the light-emitting of the first light-emitting diode through the corresponding first scale hole, and can also know the position that the second sliding positioner needs to be positioned according to the light-emitting of the second light-emitting diode through the corresponding second scale hole, so as to reduce the number of times of operating the ultrasonic biopsy needle by the user to prolong the service life of the ultrasonic biopsy needle, and can also clearly prompt the user about the current use state of the ultrasonic biopsy needle, shorten the time of operating the ultrasonic biopsy needle by the user to reduce the burden of the user. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of an ultrasonic biopsy needle according to the technology disclosed by the present application;

[0019] Figure 2 is a structural schematic diagram of a telescopic rod according to the embodiment of the present application; Figure 1

[0020] Figure 3A is a sectional view schematic diagram of a first sliding positioner according to the embodiment of the present application; Figure 3B Figure 1

[0021] Figure 4 is a structural schematic diagram of a first light-emitting assembly according to the embodiment of the present application; Figure 1

[0022] Figure 5 is a partial enlarged schematic diagram of a first light-emitting assembly according to the embodiment of the present application; Figure 4

[0023] Figure 6A is a sectional view schematic diagram of a second sliding positioner according to the embodiment of the present application; Figure 6B Figure 1

[0024] ​​​​​​​Figure 7 is a structural diagram of a second light emitting component according to an embodiment of the present application; Figure 1 is a structural diagram of a second light emitting component according to an embodiment of the present application;

[0025] Figure 8 is a structural diagram of a second light emitting component according to an embodiment of the present application; Figure 7 is a structural diagram of a second light emitting component according to an embodiment of the present application;

[0026] Figure 9 is a structural diagram of a second light emitting component according to an embodiment of the present application; Figure 1 is a structural diagram of a second light emitting component according to an embodiment of the present application;

[0027] Figure 10 is a structural diagram of a second light emitting component according to an embodiment of the present application; Figure 1 is a structural diagram of a second light emitting component according to an embodiment of the present application;

[0028] Figure 11A is a structural diagram of a second light emitting component according to an embodiment of the present application; and Figure 11B is a structural diagram of a second light emitting component according to an embodiment of the present application; and

[0029] Figure 12A is a structural diagram of a second light emitting component according to an embodiment of the present application; and Figure 12B is a structural diagram of a second light emitting component according to an embodiment of the present application.DETAILED DESCRIPTION

[0030] The foregoing and other technical contents, features and effects of the present application will become apparent from the following detailed description of a preferred embodiment with reference to the drawings. Directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, are only relative to the directions of the drawings. Therefore, the directional terms are used for illustration, not for limitation of the present application.

[0031] Figure 1 is a structural diagram of a second light emitting component according to an embodiment of the present application, Figure 2 is a structural diagram of a second light emitting component according to an embodiment of the present application; Figure 1 is a structural diagram of a second light emitting component according to an embodiment of the present application. Please refer to Figure 1 and Figure 2 , the ultrasound biopsy needle 10 comprises a sheath 110, a front handle 120, an extension rod 170 and a rear handle 180, the extension rod 170 further comprises a first end 1701, a second end 1702 opposite to the first end 1701, a containing space 171 (shown in Figure 3A , Figure 3B , Figure 4 and Figure 5 ), a plurality of first scale holes 172 (shown in Figure 5 ) and a plurality of second scale holes 173 (shown in Figure 8), one end of the tube sheath 110 is fixedly connected to the front handle 120, and the front handle 120 is slidably sleeved on the first end 1701 of the telescopic rod 170, and the rear handle 180 is slidably sleeved on the second end 1702 of the telescopic rod 170. In the embodiment, the sampling needle tube 111 is slidably arranged in the tube sheath 110 and can be driven by the rear handle 180. When the ultrasonic biopsy needle 10 is used, the user can control the depth of the tube sheath 111 through the front handle 120, and control the depth of the sampling needle tube 111 relative to the tube sheath 111 through the rear handle 180.

[0032] Figure 3A With Figure 3B According to Figure 1 , a cross-sectional view of the first sliding positioner is shown. Please refer to Figures 1-3B , the positioning structure 100 is arranged on the ultrasonic biopsy needle 10, and the positioning structure 100 includes a first sliding positioner 130, a first light-emitting assembly 140, a second sliding positioner 150, a second light-emitting assembly 160, and a processor 190. In the embodiment, the first sliding positioner 130 is connected to the front handle 120, and the first sliding positioner 130 includes a first positioning wrench 131 and a first positioning block 134, and the first positioning wrench 131 is rotatably connected to the front handle 120 through a rotating shaft 135. As shown in Figure 3B , when the user pulls the first positioning wrench 131, the first positioning wrench 131 pushes the first positioning block 134 to make the first positioning block 134 abut against the telescopic rod 170. Since the first sliding positioner 130 is connected to the front handle 120, the front handle 120 can be positioned on the telescopic rod 170 through the first sliding positioner 130. In detail, the first positioning hole 133 is arranged in the front handle 120, and the first positioning hole 133 is located between the first positioning wrench 131 and the telescopic rod 170. When the user operates the first positioning wrench 131, the first positioning block 134 is pushed to move along the first positioning hole 133 until it abuts against the telescopic rod 170. In addition, the first positioning wrench 131 can be selectively provided with a first clamping hook 1311, and the surface of the front handle can be correspondingly provided with a first clamping groove 122. As shown in Figure 3B , when the user operates the first positioning wrench 131, the first positioning wrench 131 is embedded in the first clamping groove 122 through the first clamping hook 1311 to position the relative position of the first positioning wrench 131 and the front handle 120, so that the front handle 120 can be stably positioned on the telescopic rod 170 and will not be easily detached.

[0033] Figure 4 According to Figure 1 , a structural view of the first light-emitting assembly is shown, Figure 5 According to Figure 4 , a partial enlarged view of the first light-emitting assembly is shown. Please refer to Figures 1-5The first light-emitting assembly 140 is disposed at least partially in the accommodating space 171 of the telescopic rod 170 and adjacent to the first end 1701 of the telescopic rod 170. The front handle 120 further comprises a first window 123 for exposing at least part of the first light-emitting assembly 140. The first light-emitting assembly 140 comprises a first circuit board 142, a plurality of first light-emitting diode assemblies 143, a plurality of first light-transmitting plates 141, and a plurality of first pressure sensors 144. The first circuit board 142 is disposed in the accommodating space 171. The first circuit board 142 comprises a first surface 1421 and a second surface 1422 opposite to the first surface 1421. The first surface 1421 faces the plurality of first scale holes 172 on the telescopic rod 170. The plurality of first light-emitting diode assemblies 143 are disposed on the first surface 1421. The first light-emitting diode assemblies 143 emit light rays 1431 toward the plurality of first scale holes 172, respectively. The number of the first light-transmitting plates 141 is equal to the number of the first light-emitting diode assemblies 143. Each first light-transmitting plate 141 is embedded in each first scale hole 172 and contacts each first light-emitting diode assembly 143, respectively. Each first light-transmitting plate 141 receives and transmits the light rays 1431 emitted by each first light-emitting diode assembly 143, respectively. In the embodiment, the first light-transmitting plates 141 can be made of transparent materials with toughness, such as polycarbonate (PC) or polymethyl methacrylate (PMMA). The first circuit board 142 can be a flexible printed circuit board (FPCB). The first light-emitting diode assemblies 143 can be white light-emitting diode assemblies or other light-emitting diode assemblies capable of emitting visible light. The first scale holes 172 can be holes with Arabic numerals or Chinese numerals. The first light-transmitting plates 141 can have shapes corresponding to the shapes of the first scale holes 172. When the light rays 1431 pass through the first light-transmitting plates 141, the user can clearly see the position where the first sliding positioner 130 needs to be moved and positioned. In addition, the first window 123 can be designed to expose at least one first light-transmitting plate 141 without exposing other first light-transmitting plates 141 to reduce the possibility of making mistakes when the user identifies the first scale holes 172. The first window 123 can also be designed to expose all the first light-transmitting plates 141 to reduce manufacturing difficulty.

[0034] Please continue to refer to Figures 1-5The first pressure sensors 144 are arranged on the second surface 1422 of the first circuit board 142, and the number of the first pressure sensors 144 is the same as that of the first light-transmitting plate 141 and the first LED assembly 143. Each first pressure sensor 144 is arranged to correspond to each first LED assembly 143. In addition, the needle set channel 112 is arranged in the telescopic rod 170, and the needle set channel 112 is connected to the sheath 110. The sampling needle tube 111 can be slidably arranged in the needle set channel 112. In addition, the first positioning wrench 131 further comprises a second light-transmitting plate 132 (shown in Figure 3A With Figure 3B When the user operates the first positioning wrench 131 to position the front handle 120, the second light-transmitting plate 132 contacts the first light-transmitting plate 141 embedded in the first scale hole 172 (shown in Figure 5 ) through the first window 123, so that the light 1431 emitted by the first LED assembly 143 sequentially passes through the first light-transmitting plate 141 and the second light-transmitting plate 132. In this embodiment, the second light-transmitting plate 132 has a protruding structure 1321, and the user can observe the light 1431 emitted by the first LED assembly 143 from the second light-transmitting plate 132 when the second light-transmitting plate 132 contacts the first light-transmitting plate 141 through the protruding structure 1321. Since the light 1431 passes through the first scale hole 172 before reaching the user, the user actually observes the light 1431 with the same shape as the first scale hole 172. In another preferred embodiment, as shown in Figure 3A With Figure 3B The second light-transmitting plate 132 can be optionally provided with a protruding structure 1321 protruding towards the first light-transmitting plate 141. That is, when the user operates the first positioning wrench 131, the second light-transmitting plate 132 contacts the first light-transmitting plate 141 through the protruding structure 1321. When the second light-transmitting plate 132 contacts the first light-transmitting plate 141, the user actually observes the light shape of the magnified light 1431 through the protruding structure 1321, so that the positioning scale of the first sliding positioner 130 can be more clearly identified.

[0035] Figure 6A With Figure 6B According to the embodiment of Figure 1 , a cross-sectional view of the second sliding positioner is shown. Please refer to Figure 1 , Figure 2 , Figure 6A With Figure 6BThe body 156 of the second sliding positioner 150 is slidably mounted on the telescopic rod 170 and located between the front handle 120 and the rear handle 180. The second sliding positioner 150 includes a second positioning wrench 151 and a second positioning block 154. The second positioning wrench 151 is rotatably connected to the second sliding positioner 150 via a pivot 155. Figure 6B As shown, when the user operates the second positioning wrench 151, the second positioning wrench 151 pushes the second positioning block 154 so that the second positioning block 154 abuts against the telescopic rod 170, and the second sliding positioner 150 is then positioned on the telescopic rod 170. Specifically, the second sliding positioner 150 is provided with a second positioning hole 153, and the second positioning hole 153 is located between the second positioning wrench 151 and the telescopic rod 170. When the user operates the second positioning wrench 151, the second positioning block 154 is pushed and moves along the second positioning hole 153 until it abuts against the telescopic rod 170. Furthermore, similar to the first positioning wrench 131 of the first sliding positioner 130, the second positioning wrench 151 may also selectively be provided with a second hook 1511, and the surface of the second sliding positioner 150 may also be correspondingly provided with a second slot 158, such as... Figure 6B As shown, when the user operates the second positioning wrench 151, the second positioning wrench 151 is inserted into the second slot 158 ​​through the second hook 1511 to position the relative position of the second positioning wrench 151 and the second sliding positioner 150. The second sliding positioner 150 can be stably positioned on the telescopic rod 170 without easily coming loose.

[0036] Figure 7 It is based on Figure 1 The embodiment shows a schematic diagram of the structure of the second light-emitting component. Figure 8 It is based on Figure 7 The embodiment shown is a partially enlarged schematic diagram of the second light-emitting component. Please also refer to... Figure 1 , Figure 2 , Figures 6A-8, the second light-emitting assembly 160 is at least partially disposed in the accommodation space 171 of the telescopic rod 170 and adjacent to the second end 1702 of the telescopic rod, and the second sliding positioner 150 further comprises a second window 157 to expose at least part of the second light-emitting assembly 160. The second light-emitting assembly 160 is similar to the first light-emitting assembly 140, comprising a second circuit board 162, a plurality of second light-emitting diode assemblies 163, a plurality of second light-transmitting plates 161, and a plurality of second pressure sensors 164. The second circuit board 162 is disposed in the accommodation space 171, and the second circuit board 162 comprises a third surface 1621 and a fourth surface 1622 opposite to the third surface 1621, wherein the third surface 1621 faces the plurality of second scale holes 173 on the telescopic rod 170, and the plurality of second light-emitting diode assemblies 163 are disposed on the third surface 1621 to emit light rays 1631 from these second light-emitting diode assemblies 163 to the plurality of second scale holes 173, respectively. In addition, the number of the third light-transmitting plates 161 is equal to the number of the second light-emitting diode assemblies 163, and each third light-transmitting plate 161 is respectively embedded in each second scale hole 173 and respectively contacts each second light-emitting diode assembly 163, and each third light-transmitting plate 161 can respectively receive and transmit the light rays 1631 emitted by each second light-emitting diode assembly 163. In the present embodiment, the second scale hole 173 can also be a hole with Arabic numerals (such as Figure 2 shown) or Chinese numeral shape, and the third light-transmitting plate 161 can also have a shape corresponding to the second scale hole 173, so that the user can clearly see the position where the second sliding positioner 150 needs to be moved and positioned when the light rays 1431 pass through the third light-transmitting plate 161. In addition, since the second light-emitting assembly 160 is similar to the first light-emitting assembly 140, the third light-transmitting plate 161, the second circuit board 162, and the second light-emitting diode assembly 163 can also use the same materials or components as the first light-transmitting plate 141, the first circuit board 141, and the first light-emitting diode 143, respectively, and the second light-emitting diode assembly 163 can also use light-emitting diode assemblies with different light-emitting wavelengths from the first light-emitting diode assembly 143 for the user to identify.

[0037] Please continue to refer to Figure 1 , Figure 2 , Figures 6A-8 , the plurality of second pressure sensors 164 are disposed on the fourth surface 1622 of the second circuit board 162, and the number of the second pressure sensors 164 is the same as that of the second light-transmitting plates 161 and the second light-emitting diode assemblies 163, wherein each second pressure sensor 164 is located opposite to each second light-emitting diode assembly 163. In addition, the second positioning wrench 151 further comprises a fourth light-transmitting plate 152 (shown in Figure 6A and Figure 6B), when the user operates the second positioning wrench 151 to position the second sliding positioner 150, the fourth light-transmissive plate 152 will contact the third light-transmissive plate 161 embedded in the second scale hole 173 (shown in Figure 8 ) through the second window 157, so that the light 1631 emitted by the second light-emitting diode assembly 163 sequentially passes through the third light-transmissive plate 161 and the fourth light-transmissive plate 152. In this embodiment, the fourth light-transmissive plate 152, for example, is provided with a protrusion 1521, and contacts the third light-transmissive plate 161 through the protrusion 1521. When the fourth light-transmissive plate 152 contacts the third light-transmissive plate 161, the user can observe the light 1631 emitted by the second light-emitting diode assembly 163 from the fourth light-transmissive plate 152. Since the light 1431 passes through the second scale hole 173 first and then reaches the user, the user actually observes the light 1631 with the same shape as the second scale hole 173. In another preferred embodiment, as shown in Figure 6A and Figure 6B , the fourth light-transmissive plate 152 can also be optionally provided with a protrusion structure 1521 protruding towards the third light-transmissive plate 161. That is, when the user operates the second positioning wrench 151, the fourth light-transmissive plate 152 contacts the third light-transmissive plate 161 through the protrusion structure 1521. When the fourth light-transmissive plate 152 contacts the third light-transmissive plate 161, the user actually observes the light shape of the magnified light 1631 through the protrusion structure 1521, so as to more clearly identify the positioning scale of the second sliding positioner 150.

[0038] Figure 9 is a block diagram of the system architecture of the ultrasonic biopsy needle according to Figure 1 . Please refer to Figure 9 , the ultrasonic biopsy needle 10 further comprises a processor 190 arranged in the rear handle 180 (as shown in Figure 1As shown in the diagram, the processor 190 is electrically connected to a plurality of first light-emitting diode components 143, a plurality of second light-emitting diode components 163, a plurality of first pressure sensors 144, and a plurality of second pressure sensors 164. Furthermore, the processor 190 is also electrically connected to the ultrasonic endoscope 20 to receive various signals from the ultrasonic endoscope and perform corresponding calculations. In this embodiment, the first pressure sensors 144 and second pressure sensors 164 can be resistance strain gauge pressure sensors, inductive pressure sensors, or other suitable pressure sensors. The processor 190 can be a single-core or multi-core central processing unit (CPU), other programmable general-purpose or special-purpose microprocessors, or a combination of the above electronic components. It can perform corresponding calculations based on the received signals, convert them, and issue various control signals. The ultrasonic endoscope 20 includes an ultrasonic scanning device 21 and an ultrasonic image processing device 22. The processor 190 can be electrically connected to the ultrasonic image processing device 22 via wireless communication. The wireless communication method can be Bluetooth, Wi-Fi, ZigBee, or other suitable wireless communication protocols; the invention is not limited thereto.

[0039] Figure 10 It is based on Figure 1 The embodiment illustrates a flowchart of the method for using the positioning structure on the ultrasonic biopsy needle. Please also refer to... Figure 1 , Figure 9 and Figure 10 The method of using the positioning structure disclosed in this invention is as follows.

[0040] Step S101: Provide an ultrasonic biopsy needle, insert the sheath of the ultrasonic biopsy needle into the sampling channel of the ultrasonic endoscope, and advance the ultrasonic scanning device of the ultrasonic endoscope to the tissue near the target. In this step, the target (not shown) is, for example, the lesion tissue to be sampled, the ultrasonic scanning device 21 of the ultrasonic endoscope 20 is, for example, an ultrasonic scanning probe (not shown), and the technique of the user (e.g., the physician performing the ultrasonic endoscopy) advancing the ultrasonic scanning device 21 to the vicinity of the target and pushing the sheath through the sampling channel (not shown) of the ultrasonic scanning device 21 is common knowledge in the art and will not be described further here.

[0041] Step S102: The user pushes the tube sheath 110 of the front handle 120 to contact the target object, and the ultrasonic scanning probe 21 sends a contact image signal to the ultrasonic image processing device 22. The ultrasonic image processing device 22 sends a signal of the contact target object to the processor 190 of the ultrasonic biopsy needle 10 according to the contact image signal. When the processor 190 receives the signal of the tube sheath 110 contacting the target object from the ultrasonic image processing device 22, the processor 190 calculates according to the signal of the tube sheath 110 contacting the target object and sends a first light-emitting signal to the corresponding first light-emitting diode assembly 143. The user turns the first positioning wrench 131 according to the position of the first scale hole 172 corresponding to the first light-emitting diode assembly 143 to position the front handle 120. In addition, when the second light-transmitting plate 132 on the first positioning wrench 131 contacts the corresponding first light-transmitting plate 141 on the first light-emitting assembly 140, the corresponding first pressure sensor 144 sends a first pressure signal to the processor 190. The processor 190 calculates according to the first pressure signal and sends another signal to extinguish the corresponding first light-emitting diode assembly 143. The user can know that the front handle 120 has been positioned according to the point of the light through the first scale hole 172.

[0042] Step S103: The user turns the second positioning wrench 151 according to the position of the second scale hole 173 corresponding to the second light-emitting diode assembly 163 to position the second sliding positioner 150 according to the light emitted through the second scale hole. In this step, when the processor 190 receives the target object depth signal from the ultrasonic image processing device 22, the processor 190 calculates according to the target object depth signal and sends a second light-emitting signal to the corresponding second light-emitting diode assembly 163. The user turns the second positioning wrench 151 according to the position of the second scale hole 173 corresponding to the second light-emitting diode assembly 163 to position the second sliding positioner 150. In addition, when the fourth light-transmitting plate 152 on the second positioning wrench 151 contacts the corresponding third light-transmitting plate 161 on the second light-emitting assembly 160, the corresponding second pressure sensor 164 sends a second pressure signal to the processor 190. The processor 190 calculates according to the second pressure signal and sends another signal to extinguish the corresponding second light-emitting diode assembly 163. The user can know that the second sliding positioner 150 has been positioned according to the point of the light through the second scale hole 173, and the positioning structure 100 on the ultrasonic biopsy needle 10 has also been positioned.

[0043] Please refer to Figure 1 、 Figures 3A-4 、 Figure 9 and Figure 10In another preferred embodiment of the present invention, the sensing surfaces of a plurality of first pressure sensors 144 are disposed facing the needle assembly channel 112, when implemented Figure 10 In step S102, one of the first light-transmitting plates 141 is contacted by the second light-transmitting plate 132 on the first positioning wrench 131. At this time, the corresponding first pressure sensor 144 is pushed slightly towards the needle group channel 112 and comes into contact with the outer wall of the needle group channel 112. This causes the sensing surface of the corresponding first pressure sensor 144 to sense the pressure change and transmit a first pressure signal to the processor 190. Since only the corresponding first pressure sensor 144 transmits the first pressure signal, while the adjacent first pressure sensors 144 do not have any sensing response, the positioning structure 10 can accurately prompt the user to complete the positioning work of the first sliding positioner 130. In addition, in this embodiment, the needle group channel 112 is preferably made of materials with some flexibility and excellent insulation, such as natural rubber, polypropylene (PP), and polyimide, which can reduce the wear on the first pressure sensor 144 and the second pressure sensor 164, thereby extending the service life of the positioning structure 10.

[0044] Please continue to refer to this. Figure 1 , Figures 6A-10 In this embodiment, the sensing surfaces of the plurality of second pressure sensors 164 are also configured to face the needle assembly channel 112, when implemented Figure 10 In step S103, one of the third light-transmitting plates 161 is contacted by the fourth light-transmitting plate 152 on the second positioning wrench 151. At this time, the corresponding second pressure sensor 164 is also pushed slightly towards the needle group channel 112 and then contacts the outer wall of the needle group channel 112, so that the sensing surface of the corresponding second pressure sensor 164 senses the pressure change and transmits the second pressure signal to the processor 190. Since only the corresponding second pressure sensor 164 transmits the second pressure signal, and the adjacent second pressure sensor 164 does not have any sensing response, the positioning structure 10 can also accurately prompt the user to complete the positioning work of the second sliding positioner 150.

[0045] Please also refer to Figure 1 , Figure 9 and Figure 10 In another preferred embodiment of the present invention, the positioning structure 10 further includes a power supply 191, which is disposed within the rear handle 180 and supplies power to the processor 190, a plurality of first light-emitting diode assemblies 143, a plurality of second light-emitting diode assemblies 163, a plurality of first pressure sensors 144, and a plurality of second pressure sensors 164. In this embodiment, when implementing... Figure 10When the step S102 is implemented, after the processor 190 receives the first pressure signal transmitted from the first pressure sensor 144, the processor 190 can also send a control command to the power supply 191 to stop the power supply to the first light-emitting diode assembly 143. When the step S103 is implemented, after the processor 190 receives the second pressure signal transmitted from the second pressure sensor 164, the processor 190 can also send a control command to the power supply 191 to stop the power supply to the second light-emitting diode assembly 163. In this way, in addition to prompting the user to confirm the positioning work of the first slide positioner 130 and the second slide positioner 150, the service life of the first light-emitting diode assembly 143 and the second light-emitting diode assembly 163 can also be prolonged by directly stopping the power supply to the first light-emitting diode assembly 143 and the second light-emitting diode assembly 163. Figure 10

[0046] Figure 11A According to another embodiment of the present application, a cross-sectional view of the first slide positioner is shown. Please refer to Figure 11B Figure 11A Figure 11B The first slide positioner 130a is similar to the first slide positioner 130, and the same components are denoted by the same reference numerals, and will not be described here. The difference between the first slide positioner 130a and the first slide positioner 130 is that the first slide positioner 130a further comprises a first elastic structure 136, which is arranged in the first positioning hole 133 and located between the first positioning block 134 and the telescopic rod 170, and the first elastic structure 136 also contacts the first positioning block 134 and the telescopic rod 170, respectively. In this embodiment, when the user operates the first positioning wrench 131 and embeds the first clamping hook 1311 into the first clamping groove 122, the first positioning block 134 is pushed by the first positioning wrench 131 to press the first elastic structure 136 in the first positioning hole 133, so that the first elastic structure 136 stores elastic potential energy. Therefore, when the user finishes the sampling work and needs to take out the ultrasonic biopsy needle 10, the user only needs to move the first positioning wrench 131 to separate the first clamping hook 1311 from the first clamping groove 122, and then the first elastic structure 136 can push away the first positioning block 134 and the telescopic rod 170 through the stored elastic potential energy, which can speed up the taking out of the ultrasonic biopsy needle 10 and reduce the user's effort and burden compared to the prior art. For example, the first elastic structure 136 is preferably made of a steel spring or a styrene-butadiene-styrene copolymer, wherein the steel spring can store a higher elastic potential energy, and the styrene-butadiene-styrene copolymer can make the first positioning block 134 and the telescopic rod 170 less likely to be damaged, thereby prolonging the service life of the positioning structure 10.

[0047] Figure 12A Figure 12B ​​​​is a cross-sectional view of a second sliding positioner according to another embodiment of the present application. Please refer to Figure 12A With reference to Figure 12B The second sliding positioner 150a is similar to the second sliding positioner 150, and the same components are denoted by the same reference numerals and will not be described again. The difference between the second sliding positioner 150a and the second sliding positioner 150 is that the second sliding positioner 150a further comprises a second elastic structure 159 disposed in the second positioning hole 153 between the second positioning block 154 and the telescopic rod 170, and the second elastic structure 159 further contacts the second positioning block 154 and the telescopic rod 170, respectively. When the user operates the second positioning wrench 151 and embeds the second clamping hook 1511 into the second clamping groove 158, the second positioning block 154 is pushed by the second positioning wrench 151 to press the second elastic structure 159 in the first positioning hole 133, so that the second elastic structure 159 stores elastic potential energy. When the user wants to take out the ultrasonic biopsy needle 10 and loosen the first sliding positioner 130, the user only needs to move the second positioning wrench 151 to separate the second clamping hook 1511 from the second clamping groove 158, and then the second elastic structure 159 stored elastic potential energy can push away the second positioning block 154 and the telescopic rod 170, which can accelerate the taking out of the ultrasonic biopsy needle 10 and reduce the user's force and burden compared with the prior art. The second sliding positioner 150a of the present embodiment is similar in structure to the first sliding positioner 130a described above, and the second elastic structure 159 can also use the same material as the first elastic structure 136 and has the same technical effect, which will not be described again.

[0048] In summary, when the processor receives the signal of the tube sheath contacting the target object from the ultrasonic endoscope, the processor transmits the first light-emitting signal to one of the first light-emitting diode assemblies, the first light-emitting diode assemblies emit light according to the first light-emitting signal to allow the user to operate the first positioning wrench to position the front handle, when the second light-transmitting plate on the first positioning wrench contacts the first light-transmitting plate, the first pressure sensor corresponding to the first light-transmitting plate transmits the first pressure signal to the processor to make the processor extinguish the first light-emitting diode assemblies, when the processor receives the target object depth signal from the ultrasonic endoscope, the processor transmits the second light-emitting signal to one of the second light-emitting diode assemblies to allow the user to operate the second positioning wrench to position the second sliding positioner, and when the fourth light-transmitting plate on the second positioning wrench contacts the third light-transmitting plate, the second pressure sensor corresponding to the third light-transmitting plate transmits the second pressure signal to the processor to make the processor extinguish the second light-emitting diode assemblies. In this way, the user can directly know the position to be positioned by the first sliding positioner according to the light-emitting of the first light-emitting diode through the corresponding first scale hole, and know the position to be positioned by the second sliding positioner according to the light-emitting of the second light-emitting diode through the corresponding second scale hole, so as to reduce the number of operations of the user to operate the ultrasonic biopsy needle to prolong the service life of the ultrasonic biopsy needle, and clearly prompt the user about the current use state of the ultrasonic biopsy needle, shorten the time of the user to operate the ultrasonic biopsy needle to reduce the burden of the user.

[0049] The above description is only the preferred embodiment of the present application, and cannot limit the scope of the present application. Any simple equivalent changes and modifications made according to the patent application scope and the invention content of the present application are still within the scope of the present application. In addition, the terms "first", "second" and the like mentioned in the specification or patent application scope are only used to name components or distinguish different embodiments or ranges, and are not used to limit the upper or lower limit of the number of components.

Claims

1. A positioning structure of an ultrasound biopsy needle, the ultrasound biopsy needle comprising a tube sheath, a front handle, an extension rod, and a rear handle, the extension rod comprising a first end, a second end opposite to the first end, a containing space, a plurality of first scale holes, and a plurality of second scale holes, one end of the tube sheath being fixedly connected to the front handle, the front handle being slidably sleeved on the first end of the extension rod, the rear handle being slidably sleeved on the second end of the extension rod, the positioning structure being arranged on the ultrasound biopsy needle, characterized in that, The positioning structure comprises: A first sliding positioner connected to the front handle, the first sliding positioner comprising a first positioner wrench and a first positioner block, the first positioner wrench being rotatably connected to the front handle by a pivot, wherein when the first positioner wrench is turned, the first positioner wrench pushes the first positioner block to make the first positioner block abut against the telescopic rod, so that the front handle is positioned on the telescopic rod; A first light-emitting assembly at least partially disposed in the accommodation space and adjacent to the first end, the front handle further having a first window to expose at least part of the first light-emitting assembly, the first light-emitting assembly comprising: A first circuit board disposed in the accommodation space, the first circuit board comprising a first surface and a second surface opposite to the first surface, wherein the first surface faces the plurality of first scale holes; A plurality of first light-emitting diode assemblies disposed on the first surface so that the plurality of first light-emitting diode assemblies respectively emit light towards the plurality of first scale holes; A plurality of first light-transmitting plates, the number of the plurality of first light-emitting diode assemblies being equal to the number of the plurality of first light-transmitting plates, wherein each of the first light-transmitting plates is respectively embedded in each of the first scale holes and respectively contacts each of the first light-emitting diode assemblies, and each of the first light-transmitting plates can respectively receive and transmit the light emitted by each of the first light-emitting diode assemblies; and A plurality of first pressure sensors disposed on the second surface, wherein the number of the plurality of first pressure sensors is the same as the number of the plurality of first light-emitting diode assemblies and the number of the plurality of first light-transmitting plates, and each of the first pressure sensors is located at each of the first light-emitting diode assemblies; Wherein the first positioner wrench further comprises a second light-transmitting plate, and when a user operates the first positioner wrench, the second light-transmitting plate contacts the first light-transmitting plate to make the light emitted by the first light-emitting diode assemblies sequentially pass through the first light-transmitting plate and the second light-transmitting plate; A second sliding positioner slidably disposed on the telescopic rod and located between the front handle and the rear handle, wherein the second sliding positioner comprises a second positioner wrench and a second positioner block, the second positioner wrench being rotatably connected to the second sliding positioner by a pivot, wherein when the second positioner wrench is turned, the second positioner wrench pushes the second positioner block to make the second positioner block abut against the telescopic rod, so that the second sliding positioner is positioned on the telescopic rod; A second light-emitting assembly at least partially disposed in the accommodation space and adjacent to the second end, the second sliding positioner having a second window to expose at least part of the second light-emitting assembly, the second light-emitting assembly comprising: A second circuit board disposed in the accommodation space, the second circuit board comprising a third surface and a fourth surface opposite to the third surface, wherein the third surface faces the plurality of second scale holes; A plurality of second light-emitting diode assemblies disposed on the third surface so that each of the second light-emitting diode assemblies respectively emits light towards the plurality of second scale holes; a plurality of second light-transmissive plates, a number of the plurality of second light-emitting diode assemblies is equal to a number of the plurality of second light-transmissive plates, wherein each of the second light-transmissive plates is respectively embedded in each of the second scale holes and respectively contacts each of the second light-emitting diode assemblies, and each of the second light-transmissive plates can respectively receive light emitted by each of the second light-emitting diode assemblies; and a plurality of second pressure sensors disposed on the fourth surface, wherein a number of the plurality of second pressure sensors is the same as a number of the plurality of second light-emitting diode assemblies and a number of the plurality of second light-transmissive plates, and each of the second pressure sensors contacts each of the second light-emitting diode assemblies; wherein the second positioning wrench further comprises a fourth light-transmissive plate, when a user operates the second positioning wrench, the fourth light-transmissive plate contacts a third light-transmissive plate to make light emitted by the second light-emitting diode assembly sequentially pass through the third light-transmissive plate and the fourth light-transmissive plate; and a processor disposed in the rear handle, wherein the processor is electrically connected to the plurality of first light-emitting diode assemblies, the plurality of second light-emitting diode assemblies, the plurality of first pressure sensors, and the plurality of second pressure sensors, and the processor is further electrically connected to the ultrasonic endoscope; wherein when the processor receives a signal that the tube sheath contacts a target object from the ultrasonic endoscope, the processor transmits a first light-emitting signal to one of the first light-emitting diode assemblies, the first light-emitting diode assembly emits light according to the first light-emitting signal to allow a user to operate the first positioning wrench to position the front handle, and when the second light-transmissive plate on the first positioning wrench contacts the first light-transmissive plate, the first pressure sensor corresponding to the first light-transmissive plate transmits a first pressure signal to the processor to make the processor turn off the first light-emitting diode assembly; wherein when the processor receives a target object depth signal from the ultrasonic endoscope, the processor transmits a second light-emitting signal to one of the second light-emitting diode assemblies to allow a user to operate the second positioning wrench to position the second sliding positioner, and when the fourth light-transmissive plate on the second positioning wrench contacts the third light-transmissive plate, the second pressure sensor corresponding to the third light-transmissive plate transmits a second pressure signal to the processor to make the processor turn off the second light-emitting diode assembly; the second light-transmissive plate has a protruding structure, and when a user operates the first positioning wrench to position the front handle, the second light-transmissive plate contacts the first light-transmissive plate through the protruding structure to make the first pressure sensor corresponding to the first light-transmissive plate transmit the first pressure signal to the processor; the telescopic rod further comprises a needle set channel, wherein when the second light-transmissive plate on the first positioning wrench contacts the first light-transmissive plate, the first pressure sensor is pushed to contact the needle set channel to transmit the first pressure signal to the processor; a sensing surface of the first pressure sensor is disposed towards the needle set channel.

2. The ultrasound biopsy needle positioning structure of claim 1, wherein, The fourth light-transmitting plate has a protruding structure, and when a user operates the second positioning wrench to position the second sliding positioner, the fourth light-transmitting plate contacts the third light-transmitting plate through the protruding structure, so that the second pressure sensor corresponding to the third light-transmitting plate transmits the second pressure signal to the processor.

3. The ultrasound biopsy needle positioning structure of claim 1, wherein The first positioning wrench further comprises a first clamping hook, the front handle further comprises a first clamping slot, and when a user operates the first positioning wrench, the first positioning wrench is clamped into the first clamping slot through the first clamping hook to position the relative position of the first positioning wrench and the front handle.

4. The ultrasound biopsy needle positioning structure of claim 3, wherein, The front handle further comprises a first positioning hole, which is arranged in the front handle and between the first positioning wrench and the telescopic rod, the first positioning block is slidably arranged in the first positioning hole, and a first elastic structure is arranged in the first positioning hole and respectively contacts the first positioning block and the telescopic rod, wherein when a user operates the first positioning wrench and clamps the first clamping hook into the first clamping slot, the first positioning block forces the first elastic structure to store elastic potential energy.

5. The ultrasound biopsy needle positioning structure of claim 1 wherein, The second positioning wrench further comprises a second clamping hook, the second sliding positioner further comprises a second clamping slot, and when a user operates the second positioning wrench, the second positioning wrench is clamped into the second clamping slot through the second clamping hook to position the relative position of the second positioning wrench and the second sliding positioner.

6. The ultrasound biopsy needle positioning structure of claim 5, wherein, The second sliding positioner further comprises a second positioning hole and a second elastic structure, the second positioning hole is arranged in the second sliding positioner and between the second positioning wrench and the telescopic rod, the second positioning block is slidably arranged in the second positioning hole, and the second elastic structure is arranged in the second positioning hole and respectively contacts the second positioning block and the telescopic rod, wherein when a user operates the second positioning wrench and clamps the second clamping hook into the second clamping slot, the second positioning block forces the second elastic structure to store elastic potential energy. The method is performed by the processor and comprises the following steps:

7. A positioning control method for the positioning structure of the ultrasonic biopsy needle according to any one of claims 1 to 6, characterized by, The processor receives a signal that the tube sheath contacts the target object from the ultrasonic endoscope; In response to receiving the signal that the tube sheath contacts the target object, the processor transmits a first light-emitting signal to a corresponding one of the first light-emitting diode assemblies to make it emit light; The processor receives a first pressure signal from the first pressure sensor corresponding to the first light-transmitting plate; the first pressure signal is generated when a user operates the first positioning wrench to position the front handle so that the second light-transmitting plate contacts the first light-transmitting plate; In response to receiving the first pressure signal, the processor controls the first light-emitting diode assembly to extinguish; The processor receives a target object depth signal from the ultrasonic endoscope; In response to receiving the target object depth signal, the processor transmits a second light-emitting signal to a corresponding one of the second light-emitting diode assemblies to make it emit light; ​ the processor receives a second pressure signal from a second pressure sensor corresponding to the third light-transmitting plate; the second pressure signal is generated when the user operates the second positioning wrench to position the second sliding positioner such that the fourth light-transmitting plate contacts the third light-transmitting plate; in response to receiving the second pressure signal, the processor controls the second light-emitting diode assembly to be turned off.

8. The positioning control method according to claim 7, wherein The step of generating the first pressure signal comprises: When the second light-transmitting plate contacts the first light-transmitting plate, the corresponding first pressure sensor is pushed to contact the outer wall of the needle group channel of the telescopic rod, thereby generating the first pressure signal.

9. The positioning control method according to claim 7, wherein The step of generating the second pressure signal comprises: When the fourth light-transmitting plate contacts the third light-transmitting plate, the corresponding second pressure sensor is pushed to contact the outer wall of the needle group channel of the telescopic rod, thereby generating the second pressure signal.

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