A beam spotter that automatically acquires DAP data and provides timely data feedback

Abstract

The present invention discloses a beam optic that automatically acquires DAP data and timely feeds back the data, comprising a beam optic connection part, a circuit board part, an optical path part, a light part, a lead sheet moving part and a housing part; a steel wire rope is used for transmission, and since the rotation angle of the steel wire rope and the knob is in a linear relationship, the angle of rotation of the knob can be converted to calculate the size of the opening, and finally the operation of DAP is realized. The structure is simple, the operation is convenient, and the data can be fed back in time.

Description

Technical Field

[0001] The present invention belongs to medical equipment and relates to a beam spotter, and in particular to a beam spotter which automatically acquires DAP data and timely feeds back the data. Background Art

[0002] X-ray examination is a common medical diagnostic method and is widely used in clinical practice. When electrons accelerated by a high-voltage electric field bombard a metal tungsten target, their kinetic energy is rapidly lost due to the Coulomb force and elastic collision. According to classical electrodynamics, when charged particles decelerate, they are accompanied by electromagnetic radiation. The radiation generated by electrons that follow the Maxwell velocity distribution is called bremsstrahlung. The energy of this bremsstrahlung is continuous, and this continuous energy spectrum is also the main part of the generated x-ray energy spectrum; the other part is the characteristic x-rays generated by the accelerated electrons bombarding the inner electrons of the tungsten target atoms and the outer electrons filling the "holes" and de-excitation. The maximum energy of x-rays is equal to the energy of the accelerated electrons, so the tube voltage determines the energy of the generated x-rays; the product of the tube current and the power-on time determines the number of x-rays generated.

[0003] Because X-rays have radiation to the human body, excessive radiation will cause harm to the human body. Therefore, it is necessary to design an auxiliary part to simulate the position of filming, and the beam beam came into being.

[0004] According to the revised national standards, future beam optics must include DAP (dose area product). DAP depends on the KV value, the irradiation value MAS and the size of the DAP opening.

[0005] Currently, there are two ways to achieve DAP measurement. One is through hardware acquisition with a beam detector placed inside or near the speed limiter, but it is expensive and prone to problems. The other is to achieve DAP acquisition through software.

[0006] The beam splitter is equipped with shielding blades (lead plates) for shielding X-rays. The size of the radiation window can be controlled by adjusting the size of the beam splitter blades. It integrates LED lights and reflects light from mirrors to simulate the path of the tube, adjust the position, and finally achieve a successful filming. At present, some traditional manufacturers design beam splitter shielding blades, which use the gear meshing principle to control the DAP opening, but because its motion trajectory is an arc, its blade opening and angle are not linear. Some manufacturers use a crank rocker mechanism for control, which is also not linear and difficult to calculate with an algorithm. Summary of the invention

[0007] In view of the defects or shortcomings of the above-mentioned prior art, an object of the present invention is to provide a beam spotter that automatically acquires DAP data and timely feeds back the data.

[0008] In order to achieve the above tasks, the present invention adopts the following technical solutions:

[0009] A beam splitter that automatically acquires DAP data and timely feeds back the data, comprising a beam splitter connection part, a circuit board part, an optical path part, a lighting part, a lead sheet moving part and a housing part; wherein:

[0010] The beam-splitting connecting part includes: a connecting plate retaining ring connected to the upper housing, a connecting plate, a positioning screw, and a stainless steel pressing sheet;

[0011] The circuit board part includes: circuit board, circuit board bracket, pressure riveting studs, and anti-dropping nuts;

[0012] The optical path part includes: a mirror, a lead cover, a mirror support frame, an optical path lead cover, and an optical path shielding support frame;

[0013] The lighting part includes: aluminum plate support frame, LED light and aluminum plate connecting bracket;

[0014] The moving parts of the lead sheet include: main wire wheel, wire rope, knob, knob fixing frame, left and right direction pulleys, front and rear transmission pulleys, front and rear guide wheels, front and rear blades, left and right blades, wire rope fixing clamp, knob connecting rod, copper sleeve, guide rod, tension spring; double groove guide wheel, pointer, stainless steel isolation column;

[0015] The casing includes: outer shell, LED light button, lower casing, PP pad, tape measure, tape measure fixing bracket, back cover, PP transparent plate;

[0016] It is characterized in that the main wire wheel, knob, guide wheel, front and rear blades, left and right blades, and copper sleeve are connected together by a wire rope, wherein the main wire wheel, copper sleeve and knob are concentrically arranged on the knob connecting rod, the main wire wheel rotates in the copper sleeve, and the main wire wheel, knob connecting rod and knob have the same rotation angle.

[0017] The beamer of the present invention, which automatically obtains DAP data and timely feeds back the data, uses a steel wire for transmission. Since the rotation angle of the steel wire and the knob is in a linear relationship, it can be converted into the angle of rotation of the knob to calculate the size of the opening, and finally realize the operation of DAP. It has a simple structure and is easy to operate. It can also feed back data in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional diagram of the beam picker of the present invention that automatically acquires DAP data and timely feeds back the data;

[0019] Figure 2 yes Figure 1 Top view rotated 90 degrees to the right;

[0020] Figure 3 It is a schematic diagram of the components of the beam beamer;

[0021] Figure 4 It is a schematic diagram of the beam beam connection part;

[0022] Figure 5 This is a partial schematic diagram of the circuit board;

[0023] Figure 6 It is a partial schematic diagram of the optical path;

[0024] Figure 7 This is a schematic diagram of the lighting part;

[0025] Figure 8 This is a schematic diagram of the lead sheet's moving part;

[0026] Fig. 9 It is a schematic diagram of the casing;

[0027] Fig.10 This is a simulation diagram of the connection between the knob and potentiometer.

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0029] See attached Figures 1 to 10 This embodiment provides a beam spotter that automatically acquires DAP data and timely feeds back the data, including a beam spotter connecting part 1, a circuit board part 2, an optical path part 3, a lighting part 4, a lead sheet moving part 5 and a casing part 6.

[0030] like Figure 1 As shown, the connecting plate retainer 101 is fixed to the upper housing 104 with screws, the connecting plate 102 is used to connect the beam optic to the tube, and the mirror 301 is glued to the mirror fixing frame 303, and its function is to reflect the light emitted by the LED lamp 402, so that its optical path coincides with the optical path of the X-ray to simulate the actual irradiation optical path. Reduce the radiation of the patient;

[0031] The lead shield 302 is blackened to prevent light scattering from the LED lamp 402, and is wrapped with a layer of lead on the outside to prevent X-ray leakage.

[0032] The main wire wheel 501 has a hole on its upper side, which is used to fix the wire rope 502 so that the wire rope 502 moves with the main wire wheel 501. The positioning screw 103 is used to hold the connection plate 102 to prevent the connection plate 102 from rotating in the connection plate retaining ring 101. The upper housing 104 is connected to the outer housing 601 by screws. The knob 503 is installed on the knob fixing frame 504.

[0033] Figure 1The mark 602 is the LED light switch, 603 is the lower casing, 505 is the left and right pulleys, 506 is the front and rear transmission pulleys, 507 is the front and rear guide wheels, 604 is the filter fixing foot, 508 is the front and rear blades, 509 is the left and right blades, 510 is the wire rope fixing clamp, 511 is the front and rear guide wheels, 605 is the tape measure, the LED bulb heat sink 401, 402 is the LED lamp, and the wiring plug 606 adopts a 4-core aviation plug.

[0034] Figure 2 yes Figure 1 A top view rotated 90 degrees to the right, and Figure 1 The components with the same marks are not introduced one by one here, and the components with different marks are now explained.

[0035] The copper sleeve 513 is fixed on the knob shaft, the guide rod 514 is for the front and rear blades 508, and the left and right blades 509 move along the guide rod 514. The function of the tape measure fixing frame 607 is to fix the tape measure 605 together, the function of the spring 515 is to tighten the wire rope 502 to prevent the wire rope 502 from being too loose, and 517 is a double groove guide wheel, one side of which is connected to the wire rope 502 on the main wire wheel 501, and the other side is connected to the wire rope 502 on the front and rear guide wheels 507.

[0036] like Figure 3 As shown, the beam spotter of this embodiment that automatically acquires DAP data and timely feeds back the data can be structurally divided into six parts, namely, the beam spotter connecting part 1, the circuit board part 2, the optical path part 3, the lighting part 4, the lead sheet moving part 5 and the casing part 6.

[0037] like Figure 4 As shown, the beam optic connecting part 1 includes a connection plate retainer 101 connected to the upper housing 104, a connection plate 102, a positioning screw 103, and a stainless steel pressing plate 106; the outer hexagonal screw 105 is used to fix the stainless steel pressing plate 106 in the connection plate retainer 101. The stainless steel pressing plate 106 has a strip hole, and the stainless steel pressing plate 106 is used to press the connection plate 102 to fix the light shield and the tube. The connection plate retainer 101 is fixed to the upper housing 104 by the inner hexagonal screw 107.

[0038] There is also a connection plug 606 above the upper housing 104, and the connection plug 606 can be a 4-core aviation plug.

[0039] like Figure 5As shown, the circuit board part 2 includes a circuit board 202, a circuit board bracket 203, a rivet stud 204, and an anti-drop nut 205; wherein the circuit board 202 is used to place the required circuit and its components. The circuit board 202 is fixed to the circuit board 203 bracket with four large flat head screws 201. An anti-drop nut 205 is also provided on the circuit board 203 bracket to fix the circuit board bracket 203 in the housing.

[0040] like Figure 6 As shown, the optical path part 3 includes: a mirror 301, a mirror support frame 303 is provided on one side of the mirror 301, the mirror 301 is located in the lead shield 302, and the mirror support frame 303 is connected to the lead shield 302 by using M4*8 round head screws 306; there is an optical path lead shield 304 on one side of the lead shield 302, and the optical path lead shield 304 is connected to the lead shield 302 through an optical path shielding support frame 305.

[0041] like Figure 7 As shown, the lighting part 4 includes: an aluminum plate support frame 401, an LED lamp 402 and an aluminum plate connecting frame 403; the aluminum plate support frame 401 and the aluminum plate connecting frame 403 are connected with round head screws 404 and fixed on the casing.

[0042] like Figure 8 As shown, the lead moving part 5 includes: a main wire wheel 501, a wire rope 502, a knob 503, a knob fixing frame 504, left and right pulleys 505, front and rear transmission pulleys 506, four front and rear guide wheels 507 located at four corners, front and rear blades 508, left and right blades 509, a wire rope fixing clamp 510, a knob connecting rod 512, a copper sleeve 513, a guide rod 514, a tensioning spring 515, a double-groove guide wheel 517, a pointer 518, and a stainless steel isolation column 519.

[0043] The stainless steel isolation column 519 is inserted into the knob fixing frame 504, and the left and right blades 509 are installed on both sides of two parallel guide rods 514 (the installation of the front and rear blades 508 is the same as that of the left and right blades 509).

[0044] The main wire wheel 501 is installed at one end of the knob connecting rod 512, and the copper sleeve 513, the pointer 518 and the knob 503 are sequentially installed on the knob connecting rod 512. During operation, the main wire wheel 501 rotates in the copper sleeve 513, and the main wire wheel 501, the knob connecting rod 512 and the knob 503 rotate at the same angle.

[0045] In this embodiment, the pointer 518 and the knob 503 are fixed together. When the knob 503 is rotated, the pointer 518 rotates simultaneously. There are angle scales around the pointer 518.

[0046] like Fig. 9As shown, the housing part 6 includes: a housing 601, an LED light button 602, a lower housing 603, a PP pad 604, a tape measure 605, a wiring plug 606, a tape measure fixing bracket 607, a rear cover 608, and a PP transparent plate 609; wherein the PP pad 604 is a pair, and is used to fix the PP transparent plate 609. A square hole is left in the middle of the lower housing 603.

[0047] The beam splitter of this embodiment automatically acquires DAP data and timely feeds back the data. Because a steel wire rope is used to drive the front and rear blades and the left and right blades to move, the angle is linearly proportional to the opening of the front and rear blades and the left and right blades. Therefore, the angle can be used to convert the opening of the front and rear blades and the left and right blades.

[0048] The innovation is that the rotation angle of the knob 503 is linearized to the steel wire 502 through the connection of the steel wire 502, and finally the front and rear blades 508 and the left and right blades 509 are driven to move through the movement of the steel wire 502, so that the movement of the front and rear blades 508 and the left and right blades 509 is linearly proportional to the rotation angle of the knob 503, and finally the linear relationship is transmitted to the potentiometer through the gear of the knob 503, and after digitization, the DAP function is finally realized. It has a simple structure, high precision and easy disassembly.

[0049] Algorithm: See Figure 8 , the knob 503 and the knob connecting rod 512 in the figure, the main wire wheel 501, the front and rear blades 508 and the left and right blades 509 are connected together by the wire rope 502, and the knob 503 and the main wire wheel 501 are concentrically arranged and rotated at the same angle, because the wire rope 502 is Figure 8 The main wire wheel 501 is fixed to the steel wire rope 502, so the distance the steel wire rope 502 moves is:

[0050] L=W / 360(πD), where W is the angle of the knob rotation, π is pi, which is a constant, and D is the diameter of the main wire wheel 501.

[0051] Therefore, the distance that the wire rope 502 walks is exactly the distance that the front and rear blades 508 and the left and right blades 509 walk. Therefore, the distance that the front and rear blades 508 and the left and right blades 509 walk can be determined according to the angle of the knob rotation, and the opening and closing degree is obtained.

[0052] But how to obtain this angle? The applicant adds two gears behind the knob 503 and selects a suitable gear ratio. The gear ratio selected here is 1:1. The second gear is coaxial with the potentiometer. The angle of rotation of the knob 503 is converted into an electrical signal through the potentiometer and transmitted to the CPU of the shutter. It is connected to the high-voltage generator through a communication line, and the KV, MAS and other data of the high-voltage generator are collected. Finally, the opening is added to calculate the DAP value of the current position, and finally the requirements of the national standard are met.

[0053] like Fig.10 As shown, by installing a knob gear on the knob shaft of the knob 503, the knob gear meshes with the potentiometer gear. When the knob 503 rotates, the knob gear is driven to rotate, and then the potentiometer gear is driven to rotate, so that the rotation angle signal of the knob 503 can be converted into an electrical signal, and then the data is transmitted to the CPU. The CPU transmits all the information to the CPU in the high-voltage generator through signal transmission, and finally obtains KV and MAS opening, and finally realizes the DAP function required by the national standard. Moreover, all these contents can be integrated into the circuit board 202 of the beam spotter for calculation, reducing the pressure of the high-voltage generator and balancing the calculation amount on both sides.

[0054] By controlling the rotation angle of the knob 503, the knob 503 and the main wire wheel 501 rotate together, the main wire wheel 501 drives the bearing of the double groove guide wheel 517 to rotate through the wire rope 502, and the front and rear blades 508 and the left and right blades 509 are connected through the wire rope 502 through their respective fixing clips. When the knob 503 is rotated, the wire rope moves together through the double groove guide wheel 517, because the wire rope fixing clips 510 are respectively fixed on the opposite side of the wire rope 502, and they move the same distance at the same time. Therefore, the movement of the knob 503 and the front and rear blades 508 and the left and right blades 509 are all converted into a linear relationship.

Claims

1. A beam splitter for automatically acquiring DAP data and providing timely data feedback, comprising a beam splitter connection portion (1), a circuit board portion (2), an optical path portion (3), a lighting portion (4), a lead sheet moving portion (5) and a housing portion (6); wherein: The beam-splitting device connection part (1) comprises: a connection plate retaining ring (101) connected to the upper housing (104), a connection plate (102), a positioning screw (103), and a stainless steel pressing sheet (106); The circuit board part (2) comprises: a circuit board (202), a circuit board bracket (203), a pressure riveting stud (204), and an anti-drop nut (205); The optical path part (3) comprises: a mirror (301), a lead cover (302), a mirror support frame (303), an optical path lead cover (304), and an optical path shielding support frame (305); The lighting part (4) comprises: an aluminum plate support frame (401), an LED lamp (402) and an aluminum plate connecting bracket (403); The lead sheet moving part (5) comprises: a main wire wheel (501), a wire rope (502), a knob (503), a knob fixing frame (504), left and right direction pulleys (505), front and rear transmission pulleys (506), front and rear guide wheels (507), front and rear blades (508), left and right blades (509), a wire rope fixing clamp (510), a knob connecting rod (512), a copper sleeve (513), a guide rod (514), and a tension spring (515); a double groove guide wheel (517), a pointer (518), and a stainless steel isolation column (519); The housing part (6) includes: a housing (601), an LED light button (602), a lower housing (603), a PP cushion block (604), a measuring tape (605), a measuring tape fixing bracket (607), a rear cover (608), and a PP transparent plate (609); The invention is characterized in that the main wire wheel (501), the knob (503), the front and rear guide wheels (507), the front and rear blades (508), the left and right blades (509), and the copper sleeve (513) are connected together through the wire rope (502), wherein the main wire wheel (501), the copper sleeve (513) and the knob (503) are concentrically arranged on the knob connecting rod (512), the main wire wheel (501) rotates inside the copper sleeve (513), and the main wire wheel (501), the knob connecting rod (512) and the knob (503) have the same rotation angle; The lead sheet shield (302) is blackened; The pointer (518) and the knob (503) are fixed together, and there are angle scales around the pointer (518).

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