Miniature ray detector

Abstract

The invention relates to the field of miniature detectors, in particular to a miniature ray detector which comprises a detector host, a receiving unit used for receiving detection signals and a liquid crystal touch screen used for reading signal strength changes are arranged on the detector host, and the liquid crystal touch screen can be used for reading and displaying the strength of the detection signals. The device is independently arranged and comprises a head end protection cover, a circular scintillator module, a side radiation shielding lead sheath, a side protection cover and a receiving circuit, the head end protection cover is used for protecting the internal circular scintillator module; the circular scintillator module is arranged in the head end protection cover and is used for detecting a focus part of a patient; the detector is mainly composed of the detector host and the detection unit and is compact in design and comprehensive in function, the liquid crystal touch screen provides a visual operation interface for doctors, the intensity of detection signals can be displayed in real time, and operation and judgment of the doctors are greatly facilitated.

Description

Technical Field

[0001] The invention patent relates to the field of micro detectors, in particular to a micro ray detector. Background Art

[0002] Surgical robots have brought revolutionary changes in the field of modern medicine, especially in tumor resection surgery. These high-tech devices have greatly improved the success rate of surgery and the survival rate of patients with their high precision and accuracy. Through advanced control systems and sophisticated robotic arms, surgical robots are able to perform complex and delicate surgical operations, avoiding the influence of human factors such as emotional fluctuations on surgery, and also reducing dependence on the doctor's personal technical level. Therefore, the application of surgical robots makes surgical results more stable and reliable, providing patients with better treatment effects.

[0003] Although surgical robots have shown great potential in tumor resection surgery, their navigation technology still faces some challenges. Currently, surgical robots mainly rely on electromagnetic navigation and optical navigation to determine the position of surgical instruments.

[0004] First, electromagnetic navigation determines the position of surgical instruments by monitoring changes in the magnetic field. However, the complexity of the human body's internal environment, such as bones, metal implants, and interference from bioelectric activity, may affect the stability of the magnetic field, resulting in a decrease in navigation accuracy. In addition, electromagnetic navigation has difficulties in displaying tumor boundaries. Since changes in the magnetic field do not directly reflect the characteristics of tumor tissue, it is difficult for doctors to accurately determine the boundaries of the tumor through electromagnetic navigation, which may affect the accuracy and safety of the operation.

[0005] Optical navigation uses a camera to capture images of the surgical area and matches them with the preoperative 3D model to determine the position of surgical instruments. However, when dealing with deep tumors, the clarity and accuracy of the image may be seriously affected due to the scattering and absorption of light in human tissue.

[0006] Similar to electromagnetic navigation, optical navigation cannot directly display the boundaries of tumors. This requires doctors to rely on other means (such as palpation, ultrasound, etc.) to determine the boundaries of tumors during surgery, which increases the complexity and risk of surgery. Summary of the invention

[0007] The technical problem to be solved by the patent of this invention is: to solve the shortcomings of the current positioning technology, not only to make the positioning more accurate, but also to not bring psychological pressure to the patient; to reduce the difficulty of operation for doctors and improve the treatment efficiency.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A miniature radiation detector comprising

[0010] The detector host is provided with a receiving unit for receiving the detection signal and a liquid crystal touch screen for reading the change of the signal strength. The liquid crystal touch screen can be used to read and display the strength of the detection signal, and provide a doctor with visual identification through the change of the columnar peak value;

[0011] The detection unit is independently configured and includes a head end protection cover, a circular scintillator module, a side radiation shielding lead sheet, a side protection cover, and a receiving circuit;

[0012] The head end protection cover is used to protect the internal circular scintillator module;

[0013] The circular scintillator module is arranged inside the head end protection cover and is used to detect the lesion site of the patient;

[0014] The side radiation shielding lead sheet is arranged between the head end protection cover and the circular scintillator module to shield the signal interference on the side of the detector;

[0015] The side protection cover is fixedly connected to one end of the head end protection cover and is used to isolate the side radiation shielding lead sheet from the patient's skin;

[0016] The detection unit also includes a signal transmitting unit, which is communicatively connected with the receiving unit respectively.

[0017] As an optional solution of the miniature radiation detector described in the present invention, the receiving unit includes wired / wireless types.

[0018] As an optional solution for the miniature radiation detector described in the present invention, when the signal transmitting unit is wired, the signal transmitting unit is a detector cable, and the detector cable includes a front-end cable and a rear-end cable, which are used to realize signal transmission between the detector probe and the host, wherein the front-end cable used is a multi-core thin and flexible biocompatible cable, and its outer sheath is made of PFA material that meets biological requirements, and the front and rear cables are connected by connectors.

[0019] As an optional solution of the miniature radiation detector described in the present invention, when the signal transmitting unit is wireless, the detection unit also includes a control box, the control box is rotatably connected to a handle, the bottom of the handle is fixedly connected to a control wire, the detector probe direction control wire extends from the inside of the cable and is connected to the side protective cover, and the detector control wire is pulled by changing the direction of the handle to control the direction of the detector probe; a wireless communication module is arranged in the control box, and the signal transmission line transmits the signal detected by the circular scintillator module to the wireless communication module, and then the wireless communication module transmits the signal to the wireless communication module in the host computer by wireless transmission.

[0020] As an optional solution of the micro-radiation detector described in the present invention, the scintillator used in the circular scintillator module is a garnet scintillator, whose molecular formula is (Lu x Ce y Tb 3-x-y )Al 5 O 12 , where x=0.01-1, y=0.005%-0.002%.

[0021] As an optional solution of the miniature radiation detector described in the present invention, a detector host switch is provided on the detector host for starting and shutting down the detector host.

[0022] As an optional solution of the miniature radiation detector described in the present invention, it also includes a power supply module for providing power for the operation of each module of the host.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The detector is mainly composed of a detector host and a detection unit. It has a compact design and comprehensive functions. The LCD touch screen provides doctors with a visual operation interface that can display the strength of the detection signal in real time, greatly facilitating doctors' operations and judgments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the wired micro-radiation detector in Example 1 of the present invention;

[0026] Figure 2 It is a schematic diagram of the components of the wired micro-radiation detector in Embodiment 1 of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the detection unit of the wired micro-radiation detector in Embodiment 1 of the present invention;

[0028] Figure 4 Schematic diagram of a cross section of a detection unit of a wired micro-radiation detector in Embodiment 1 of the present invention;

[0029] Figure 5 This is a block diagram of the electrical system of the wired miniature radiation detector in Embodiment 1 of the present invention;

[0030] Figure 6 This is a schematic diagram of the overall structure of the wireless miniature radiation detector in Example 2 of the present invention;

[0031] Figure 7 It is a schematic cross-sectional structure diagram of a detector probe of a wireless miniature radiation detector in Embodiment 2 of the present invention;

[0032] Figure 8Schematic diagram of the cross-sectional structure of the control box of the wireless miniature radiation detector in Example 2 of the present invention;

[0033] Fig. 9 This is a block diagram of the electrical system of the wireless miniature radiation detector in Example 2 of the present invention.

[0034] In the figure: 1-detector host, 1.1-LCD touch screen, 1.2-detector host switch, 1.3-detector cable interface, 1.4-detector cable adapter, 2-detection unit, 2.1-detector probe, 2.1.1-head end protection cover, 2.1.2-circular scintillator module, 2.1.3-side radiation shielding lead, 2.1.4-side protection cover, 2.1.5-receiving circuit, 2.1.6-detector probe clamping block, 2.1.7-signal transmission line, 2.1.8-control line, 2.2-detector cable, 2.3-detection unit adapter, 2.4-handle, 2.5-control box, 2.5.1-wireless communication module. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] like Figure 1-9As shown, a miniature radiation detector demonstrated in an embodiment of the present application includes both wired and wireless types, both of which are used to cooperate with the robot platform to detect the patient's cavity tumor under the drive of the robot platform and transmit the detection signal back to provide the doctor with a visual identification basis, which greatly facilitates the doctor's operation and judgment, and the detector is small in size and will not cause excessive physical burden on the patient.

[0039] Embodiment 1:

[0040] See also Figure 1-5 The present invention provides embodiment 1:

[0041] like Figure 1 A wired miniature radiation detector is shown, comprising a detector host 1, comprising a detector host 1; the detector host 1 comprises a liquid crystal touch screen 1.1, a detector host switch 1.2, a detector cable interface 1.3, and a detector cable adapter 1.4; the liquid crystal touch screen 1.1 is used to read and display the strength of the detection signal, and provide doctors with visual identification through the change of the columnar peak value; the detector host switch 1.2 is used to start and shut down the detector host 1; the detector cable interface 1.3 is used to connect multiple detector cable adapters 1.4 so that multiple detection units 2 can be connected and used at the same time; the detector cable adapter 1.4 is used to connect the detection unit 2.

[0042] like Figure 3 The connection detection unit 2 shown is an independent structure, which is convenient for separate extinction and disinfection; the connection detection unit 2 includes a detector probe 2.1, a detector cable 2.2, and a detection unit adapter 2.3, wherein the detector cable 2.2 is an information transmission line, the detector probe 2.1 is arranged at one end of the detector cable 2.2, and the other end of the detector cable 2.2 is connected to the detector probe clamping block 2.1.6; the detector probe clamping block 2.1.6 is used for the surgical robot mechanical arm to clamp and control the direction of the detector probe 2.1.

[0043] like Figure 4The internal structure of the detector probe 2.1 shown in the figure includes a head end protection cover 2.1.1, a circular scintillator module 2.1.2, a side radiation shielding lead sheet 2.1.3, a side protection cover 2.1.4, and a receiving circuit 2.1.5; the head end protection cover 2.1.1 is used to protect the internal circular scintillator module 2.1.2; the circular scintillator module 2.1.2 is arranged inside the head end protection cover 2.1.1, and is used to detect the lesion site of the patient; the side radiation shielding lead sheet 2.1.3 is arranged between the head end protection cover 2.1.1 and the circular scintillator module 2.1.2 The circular scintillator module 2.1.2 is used to shield the signal interference from the side of the detector; the side protective cover 2.1.4 is fixedly connected to one end of the head end protective cover 2.1.1, and is used to isolate the side radiation shielding lead sheet 2.1.3 from the patient's skin; the receiving circuit 2.1.5 is arranged inside the side protective cover 2.1.4 and is electrically connected to the circular scintillator module 2.1.2, and is used to transmit the detection signal generated by the circular scintillator module 2.1.2 back to the detector host 1, and display the converted signal on the LCD touch screen 1.1.

[0044] like Figure 5 As shown, the scintillator module of the detector probe part realizes the radiation signal collection of the target position; the signal receiving module realizes the reception, amplification and filtering of the signal collected by the scintillator; and the signal interface module is used to output the processed signal through a cable.

[0045] The detector cable 2.2 includes a front-end cable and a rear-end cable, which are used to realize signal transmission between the detector probe and the host. The front-end cable used is a multi-core thin and flexible biocompatible cable, and its outer sheath is made of PFA material that meets biological requirements. The front and rear cables are connected by connectors.

[0046] The signal interface module of the host part is used to receive the signal from the detector probe 2.1 through the detector cable 2.2; the signal processing module is used to collect and process the received signals of the detector probe 2.1 and the input signal of the LCD touch screen 1.1 and output them to the LCD touch screen 1.1 for graphic display; the LCD touch screen 1.1 is used to operate the host and convert the signal output by the signal processing module into a graphic form and output it to the operator; the power supply module is used to provide power for the operation of each module of the host.

[0047] The working principle of the first embodiment is as follows: through the detector probe clamping block 2.1.6, the surgical robot mechanical arm can clamp the detector probe 2.1 and control the direction of the detector probe 2.1, and receive the gamma rays emitted by the patient's lesion through the circular scintillator module 2.1.2 inside the detector probe 2.1, convert it into fluorescent photons and amplify the number, and then the fluorescent photons are converted into electrons by the receiving circuit 2.1.5 and amplified by multiplication, and the formed electrical signal is stably transmitted to the detector host 1 through the detector cable 2.2. After the signal interface module in the detector host 1 receives the signal, the signal processing module performs amplification, filtering and other processing, extracts useful information, and displays the strength of the detection signal in real time through the LCD touch screen 1.1, providing a visual identification basis for the doctor. At the same time, the doctor can operate and control the system through the LCD touch screen 1.1.

[0048] The detector is mainly composed of a detector host 1 and a detection unit 2. It has a compact design and comprehensive functions. The LCD touch screen provides doctors with a visual operation interface that can display the strength of the detection signal in real time, greatly facilitating doctors' operations and judgments.

[0049] See also Figure 6-9 In this application, embodiment 2 is also provided:

[0050] like Figure 6 The wireless miniature radiation detector shown in the figure comprises a detector host 1, on which a detector host switch 1.2 is provided for starting and shutting down the detector host 1; on the detector host 1, a liquid crystal touch screen 1.1 is provided for reading and displaying the strength of the detection signal, and providing a doctor with visual identification through the change of the columnar peak value; the detection unit 2 can be wirelessly connected to the detector host 1; on the detection unit 2, there are a control box 2.5, a detector probe direction control handle 2.4, a detector cable 2.2 and a detector probe 2.1, wherein the detector cable 2.2 is a hollow hose body, and a signal transmission line 2.1.7 is provided inside the detector cable 2.2, and the detection One end of the detector cable 2.2 is connected to the detector probe 2.2 for controlling the direction of the detector probe 2.2; the detector cable 2.2 has sufficient length for the detector probe 2.3 to penetrate into the patient's body close to the lesion site, and the other end of the detector cable 2.2 is connected to the control box 2.5, and the control box 2.5 is connected to the detector probe 2.1 through the signal transmission line 2.1.7. The signal detected by the detector probe 2.1 is transmitted back to the detector host 1 through the signal transmission line 2.1.7 and the strength of the detection signal is displayed on the LCD touch screen 1.2, so that the doctor can determine the lesion site according to the strength of the displayed signal; the detection unit 2 is an independent component and can be sterilized separately.

[0051] like Figure 7The structure of a wireless miniature radiation detector probe is shown, and the internal structure of the detector probe 2.1 includes a head end protection cover 2.1.1, a circular scintillator module 2.1.2, a side radiation shielding lead sheet 2.1.3, a side protection cover 2.1.4, and a receiving circuit 2.1.5; the head end protection cover 2.1.1 is used to protect the internal circular scintillator module 2.1.2; the circular scintillator module 2.1.2 is arranged inside the head end protection cover 2.1.1, and is used to detect the lesion site of the patient; the side radiation shielding lead sheet 2.1.3 is arranged on the head end protection cover 2. 1.1 and the circular scintillator module 2.1.2, for shielding the side signal interference of the detector; the side protection cover 2.1.4 is fixedly connected to one end of the head protection cover 2.1.1, for isolating the side radiation shielding lead sheet 2.1.3 from the patient's skin; the receiving circuit 2.1.5 is arranged inside the side protection cover 2.1.4, and is electrically connected to the circular scintillator module 2.1.2 and the control box 2.5 respectively, for transmitting the detection signal generated by the circular scintillator module 2.1.2 back to the detector host 1, and displaying the converted signal on the LCD touch screen 1.1.

[0052] like Figure 8 The internal structure of a control box of a wireless miniature radiation detector is shown, wherein the control box 2.5 is rotatably connected to a handle 2.4, a control wire 2.4.7 is fixedly connected to the bottom of the handle 2.4, and the detector probe direction control wire 2.4.7 extends from the inside of the cable 2.2 and is connected to the side protection cover 2.1.4. By changing the direction of the handle 2.4, the detector control wire 2.4.7 is pulled to control the direction of the detector probe 2.4; a wireless communication module 2.5.1 is arranged in the control box 2.5, and a signal transmission line 2.1.7 transmits the signal detected by the circular scintillator module 2.4.2 to the wireless communication module 2.5.1, and then the wireless communication module 2.5.1 transmits the signal to the wireless communication module in the host 1 by wireless transmission.

[0053] like Fig. 9 As shown, the circular scintillator module 2.1.2 realizes the collection of radiation signals at the target position; the signal receiving module realizes the reception, amplification, filtering and other processing of the signals collected by the scintillator; and the signal interface module is used to output the processed signals through cables.

[0054] The detector cable part is used to realize the signal transmission between the detector probe and the wireless operator. The cable used is a multi-core thin and soft biocompatible cable, and its outer sheath is made of PFA material that meets biological requirements.

[0055] The signal interface module of the wireless operator part is used to receive the signal from the detector probe through the cable; the wireless communication module is used to output the detector probe signal to the host through wireless communication; the power supply module is used to provide power to the working circuit.

[0056] The wireless communication module of the host part is used to receive the collection signal from the wireless operator; the signal processing module is used to collect and process the received detector probe signal and touch screen input signal and output them to the touch screen for graphic display; the touch display screen is used to operate the host and convert the signal output by the signal processing module into a graphic form and output it to the operator; the power supply module is used to provide power for the operation of each module of the host.

[0057] The working principle of the second embodiment is: the detector probe 2.1 is controlled by the handle 2.4 to reach the lesion, and the circular scintillator module 2.1.2 in the detector probe 2.1 is responsible for collecting the radiation signal of the patient's lesion. After these signals are processed by the receiving circuit, they are transmitted to the control box 2.5 through the signal transmission line 2.1.7. The wireless communication module 2.5.1 in the control box 2.5 transmits the signal to the detector host 1 in a wireless manner. The signal processing module in the host 1 further processes and analyzes the received signal, and then converts the processed signal into a graphic form and displays it on the LCD touch screen, so that the doctor can determine the lesion site according to the strength of the displayed signal. At the same time, the doctor can adjust the direction and angle of the detector probe through the handle on the control box to achieve more accurate detection.

[0058] Embodiment three:

[0059] Different from the previous two embodiments, this embodiment discloses a method for preparing a circular scintillator module 2.1.2, comprising the following steps:

[0060] S1: According to the formula (Lu 2 O 3 ,Al 2 O 3 , Ce 2 O 3 ) ratio is weighed once and put into a ball mill. The ball milling medium is anhydrous ethanol and the ball milling time is 12 hours. Through the fine formula ratio and long-term ball milling mixing (12 hours), the sufficient and uniform mixing of the raw materials is ensured, which is beneficial to improve the density and uniformity of the scintillator.

[0061] S2: drying, sieving and calcining the fully mixed powder slurry to further enhance the density and mechanical strength of the scintillator;

[0062] S3: dry pressing;

[0063] S4: cold isostatic pressing;

[0064] S5: The ceramic green body is sintered in vacuum atmosphere at a temperature of 1760-1860°C and a sintering time of 10 hours;

[0065] S6: The vacuum sintered ceramic sample is annealed in an oxidizing atmosphere at 1450°C for 10 h;

[0066] S7: The sample was mechanically double-sided polished and processed into a ceramic sheet of Φ1 mm and 0.5×0.5 mm;

[0067] S8: The molecular formula of ceramic sheet is: (Lu x Ce y Tb 3-x-y )Al 5 O 12 , that is, a round garnet scintillator module.

[0068] in,

[0069] Lu 2 O 3 Molecular weight: 398;

[0070] CeO 2 Molecular weight: 172;

[0071] A l 2 O 3 Molecular weight: 102;

[0072] Tb 2 O 3 Molecular weight: 366;

[0073] x=0.01-1, y=0.005%-0.002%.

[0074] In the above, by adding fluorescent components (such as rare earth elements such as Lu, Ce, Tb, etc.) to the scintillator, it can emit bright scintillation light when excited by rays, and the decay speed is fast and there is no afterglow. This excellent scintillation performance makes the scintillator have broad application prospects in the field of nuclear medicine. At the same time, although the preparation process involves multiple steps and complex process conditions, overall, the cost of this method is relatively low, and the selection of raw materials and the optimization of the preparation process can help reduce costs and improve production efficiency.

[0075] Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and its core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner. These improvements, modifications, changes or combinations, or the concept and technical solution of the invention are directly applied to other occasions without improvement, which should be regarded as the protection scope of the present invention.

Claims

1. A miniature radiation detector, characterized in that: include The detector host is provided with a receiving unit for receiving the detection signal and a liquid crystal touch screen for reading the change of the signal strength. The liquid crystal touch screen can be used to read and display the strength of the detection signal, and provide a doctor with visual identification through the change of the columnar peak value; The detection unit is independently configured and includes a head end protection cover, a circular scintillator module, a side radiation shielding lead sheet, a side protection cover, and a receiving circuit; The head end protection cover is used to protect the internal circular scintillator module; The circular scintillator module is arranged inside the head end protection cover and is used to detect the lesion site of the patient; The side radiation shielding lead sheet is arranged between the head end protection cover and the circular scintillator module to shield the signal interference on the side of the detector; The side protection cover is fixedly connected to one end of the head end protection cover and is used to isolate the side radiation shielding lead sheet from the patient's skin; The detection unit also includes a signal transmitting unit, which is communicatively connected with the receiving unit respectively.

2. A miniature radiation detector according to claim 1, characterized in that: The receiving unit includes wired and wireless types.

3. A miniature radiation detector according to claim 2, characterized in that: When the signal transmitting unit is wired, the signal transmitting unit is a detector cable, which includes a front-end cable and a rear-end cable, and is used to realize signal transmission between the detector probe and the host. The front-end cable used is a multi-core thin and flexible biocompatible cable, and its outer sheath is made of PFA material that meets biological requirements. The front and rear cables are connected by connectors.

4. The miniature radiation detector according to claim 2, characterized in that: When the signal transmitting unit is wireless, the detection unit also includes a control box, which is rotatably connected to a handle, and a control wire is fixed to the bottom of the handle. The detector probe direction control wire extends from the inside of the cable and is connected to the side protective cover. The detector probe direction is controlled by pulling the detector control wire by changing the direction of the handle. A wireless communication module is provided in the control box, and the signal transmission line transmits the signal detected by the circular scintillator module to the wireless communication module, and then the wireless communication module transmits the signal to the wireless communication module in the host computer by wireless transmission.

5. The miniature radiation detector according to claim 1, characterized in that: The scintillator used in the circular scintillator module is a garnet scintillator, whose molecular formula is (Lu x Ce y Tb 3-x-y )Al5O 12 , where x=0.01-1, y=0.005%-0.002%.

6. The miniature radiation detector according to claim 1, characterized in that: The detector host is provided with a detector host switch for starting and shutting down the detector host.

7. The miniature radiation detector according to claim 1, characterized in that: It also includes a power supply module, which is used to provide power for the operation of each module of the host.

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