Device for measuring catheter guidewire rotation angle and assembly method thereof

Abstract

The present invention provides a device for measuring the rotation angle of a catheter guidewire and an assembly method thereof. The device for measuring the rotation angle of a catheter guidewire includes a laser transmitter, a laser receiver, a base, and a light shielding disc; a catheter guidewire fixing position is provided at the center of the light shielding disc, and the catheter guidewire passes through the light shielding disc through the catheter guidewire fixing position, and the catheter guidewire is fixedly connected to the catheter guidewire fixing position; the light shielding disc includes a light shielding portion and a light transmitting portion; the light shielding portion and the light transmitting portion are alternately distributed along the circumference of the catheter guidewire fixing position; as the light shielding disc rotates along its own center, the light of the laser transmitter switches between the following two states: the light of the laser transmitter is blocked by the light shielding portion of the disc; the light of the laser transmitter passes through the light transmitting portion of the disc and is received by the laser receiver. The present invention realizes the measurement of the rotation angle of the catheter guidewire by setting the light shielding disc, the laser transmitter, and the laser receiver, and utilizing the high and low level switching of the laser receiver signal line.

Description

Technical Field

[0001] The present invention relates to the field of interventional surgical robots, and in particular to a device for measuring the rotation angle of a catheter guidewire and an assembly method thereof. Background Art

[0002] During interventional procedures, rotating a catheter guidewire is a common and crucial action, ensuring the correct orientation of the guidewire within the blood vessel. When using an interventional surgical robot to rotate the guidewire, particular attention must be paid to its efficiency and accuracy, as this directly impacts the outcome of the procedure. Consequently, extensive debugging is inevitably required to ensure the robot's optimal function.

[0003] During the debugging process, if the actual rotation angle of the catheter guidewire can be measured, it will play an important guiding role in the debugging work. Because the catheter guidewire, especially the guidewire, is very thin, it is difficult to observe the rotation of the catheter guidewire with the naked eye, let alone measure the rotation angle.

[0004] In the current debugging process, the effectiveness of rotating catheter guidewires is often qualitatively tested by attaching a piece of paper to the end of the guidewire. This is a simple and effective method, but the disadvantage is that the results obtained are only qualitative. Summary of the Invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a device for measuring the rotation angle of a catheter guidewire and an assembly method thereof.

[0006] According to the present invention, a device for measuring the rotation angle of a catheter guidewire includes a laser transmitter, a laser receiver, a base, and a light shielding disc;

[0007] The laser transmitter, laser receiver and light shielding disk are all located in the base;

[0008] A catheter guide wire fixing position is provided at the center of the shading disc, and the catheter guide wire passes through the shading disc through the catheter guide wire fixing position, and the catheter guide wire is fixedly connected to the catheter guide wire fixing position;

[0009] The shading disc includes a disc light-shielding portion and a disc light-transmitting portion; the disc light-shielding portion and the disc light-transmitting portion are alternately distributed along the circumference of the catheter guidewire fixing position;

[0010] The laser emitter is directly opposite to the laser receiver, and the light direction of the laser emitter is consistent with the length direction of the catheter guide wire;

[0011] As the shutter disk rotates around its center, the laser emitter's light switches between the following two states:

[0012] The light from the laser transmitter is partially blocked by the disk;

[0013] The light from the laser transmitter passes through the light-transmitting portion of the disk and is received by the laser receiver.

[0014] Preferably, a base guide rail is installed on the base, and a base plate seam and a base guide wire seam are opened on the base;

[0015] The number of the base guide wire seams is 2, the base guide wire seams are opened on the side wall of the base, and the two base guide wire seams are symmetrically arranged, and the line connecting the two base guide wire seams is parallel to the line connecting the laser emitter and the laser receiver;

[0016] There are two base guide rails, which are installed on the inner side wall of the base and are symmetrically arranged. The line connecting the two base guide rails is perpendicular to the line connecting the laser emitter and the laser receiver.

[0017] The number of the base disc seams is 2, and the base disc seams are opened on the side wall of the base guide rail and match the shape of the base guide rail; the base guide rail and the base disc seam are both used for installing the shading optical disk.

[0018] Preferably, it also includes a laser transmitter power line, a laser receiver power line and a signal line;

[0019] One end of the laser emitter power line is connected to the laser emitter, and the other end passes through the base and is connected to an external power supply and / or controller;

[0020] One end of the laser receiver power line and the signal line is connected to the laser receiver, and the other end passes through the base and is connected to an external power supply and / or controller.

[0021] Preferably, the shading disc comprises a left half shading disc and a right half shading disc connected to each other;

[0022] The left half-shielded optical disc and the right half-shielded optical disc both include a shielding disc rubber surface, a disc light-shielding portion, a disc light-transmitting portion, and a disc step structure;

[0023] The disc step structure is installed at the center of the left half of the optical disc, and the disc step structure is provided with a left half of the guide wire fixing position and the optical disc rubber surface; the optical disc rubber surface is provided on the side wall where the left half of the guide wire fixing position is located;

[0024] The left half-shielded optical disc and the right half-shielded optical disc have the same shape and size;

[0025] The left half-shielded optical disc and the right half-shielded optical disc are bonded to each other through the adhesive surfaces of the two shielded optical discs;

[0026] The left half catheter guide wire fixing position and the right half catheter guide wire fixing position of the right half shielding disc form a catheter guide wire fixing position; the tube guide wire passes through the catheter guide wire fixing position through the shielding disc and is bonded to the catheter guide wire fixing position.

[0027] Preferably, the base guide wire slit is a strip-shaped slit, and the length of the base guide wire slit extends in the vertical direction;

[0028] The bottom end of the guidewire slit is at the same height as the catheter guidewire fixing position.

[0029] According to the present invention, a method for assembling a device for measuring the rotation angle of a catheter guidewire is provided, which is used to assemble the device for measuring the rotation angle of a catheter guidewire, comprising the following steps:

[0030] S1. Place the catheter guidewire into the guidewire slit of the base;

[0031] S2. Use the first auxiliary tool to insert the left half-covered optical disc through the left base guide rail;

[0032] S3. Use the second auxiliary tool to insert the right half-covered optical disc through the right base guide rail;

[0033] S4. Using a third auxiliary tool, connect the left half-shielded optical disc, the right half-shielded optical disc, and the catheter guidewire.

[0034] S5. Remove the auxiliary tools and complete the assembly of the device for measuring the rotation angle of the catheter guidewire.

[0035] Preferably, in step S2, the first auxiliary tool is a left pan bracket;

[0036] The left disc holder includes a first cylindrical body and a first head connected to each other, the first cylindrical body is provided with a slot for accommodating the left semi-shielded optical disc, one end of the first cylindrical body is adapted to mate with the disc step structure of the left semi-shielded optical disc, and the left disc holder is further provided with two passages, both of which penetrate the first cylindrical body along the length direction thereof, and the two passages are symmetrically arranged;

[0037] In step S2, the left half-shielded optical disc is placed at the front end of the left disc holder by relying on its disc step structure; the left half-shielded optical disc and the left disc holder are inserted into the base as a whole, wherein the left disc holder slides in along the left base guide rail, and the left half-shielded optical disc enters from the disc gap of the base.

[0038] Preferably, in step S3, the second auxiliary tool is a right disc bracket;

[0039] The structure of the right pan bracket is the same as that of the left pan bracket, and is arranged symmetrically with the left pan bracket;

[0040] In step S3, the right half-covered optical disc is placed at the front end of the right disc holder by relying on its disc step structure; the right half-covered optical disc and the right disc holder are inserted into the base as a whole, wherein the right disc holder slides in along the right base guide rail, and the right half-covered optical disc enters from the disc gap of the base.

[0041] Preferably, in step S4, the third auxiliary tool is a left disk pushing rod and a right disk pushing rod;

[0042] The left disk pushing rod comprises a second cylinder body and a second head portion connected to each other, the second cylinder body comprises a first rod portion and a second rod portion arranged symmetrically; the outer diameters of the first rod portion and the second rod portion are matched with the upper channel of the first cylinder body;

[0043] The structure of the right disk push rod is the same as that of the left disk push rod;

[0044] In step S4, the left disk push rod is inserted and pushed inward along the left disk support passage, and then the right disk push rod is inserted and pushed inward along the right disk support passage;

[0045] At this time, the left disc pushing rod presses against the left half of the optical disc, and the right disc pushing rod presses against the right half of the optical disc. Then the left and right disc pushing rods continue to be pushed inward, and the left and right half optical discs will continue to move closer to the catheter guide wire, and finally the rubber surfaces of the optical discs of the two will be bonded together with the catheter guide wire.

[0046] Preferably, in step S5, removing the auxiliary tool includes removing the first auxiliary tool, the second auxiliary tool and the third auxiliary tool.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. The present invention realizes the measurement of the rotation angle of the catheter guide wire by setting a shading disk, a laser transmitter and a laser receiver and utilizing the high and low level switching of the laser receiver signal line.

[0049] 2. The assembly method provided by the present invention, in conjunction with its auxiliary tools, can achieve rapid installation of key components such as catheter guidewires, left and right half-shielded optical discs, while taking into account the efficiency and effect of the testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0051] Figure 1 It is a schematic diagram of the principle of the present invention;

[0052] Figure 2 This is a schematic diagram of the appearance structure of the present invention;

[0053] Figure 3 Schematic diagram of the internal structure of the present invention;

[0054] Figure 4 It is a schematic cross-sectional view of the present invention;

[0055] Figure 5 This is a schematic structural diagram of step S1 of the assembly method;

[0056] Figure 6 This is a structural diagram of step S2 of the assembly method;

[0057] Figure 7 This is a schematic structural diagram of step S4 of the assembly method;

[0058] Figure 8 This is a structural diagram of step S5 of the assembly method;

[0059] Figure 9 It is a structural schematic diagram of the measurement process of the present invention;

[0060] Figure 10 It is a structural diagram of the left half-covered optical disc.

[0061] The figure shows:

[0062] DETAILED DESCRIPTION

[0063] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0064] The present invention provides a device for measuring the rotation angle of a catheter guide wire. Figure 1-10 As shown, the device for measuring the rotation angle of the catheter guidewire includes a laser transmitter 2, a laser receiver 3, a base 4 and a shading disc; the laser transmitter 2, the laser receiver 3 and the shading disc are all located in the base 4;

[0065] A catheter guidewire fixing position is provided at the center of the shading disc, and the catheter guidewire 1 passes through the shading disc through the catheter guidewire fixing position, and the catheter guidewire 1 is fixedly connected to the catheter guidewire fixing position; the shading disc includes a disc light-shielding portion 52 and a disc light-transmitting portion 53; the disc light-shielding portion 52 and the disc light-transmitting portion 53 are alternately distributed circumferentially along the catheter guidewire fixing position; the laser emitter 2 is directly opposite to the laser receiver 3, and the light direction of the laser emitter 2 is consistent with the length direction of the catheter guidewire 1; as the shading disc rotates along its own center, the light of the laser emitter 2 switches between the following two states: the light of the laser emitter 2 is blocked by the disc light-shielding portion 52; the light of the laser emitter 2 passes through the disc light-transmitting portion 53 and is received by the laser receiver 3.

[0066] A base guide rail 41 is installed on the base 4, and a base disc seam 42 and a base guide wire seam 43 are opened on the base 4; the number of the base guide wire seams 43 is 2, and the base guide wire seams 43 are opened on the side wall of the base 4, and the two base guide wire seams 43 are symmetrically arranged, and the line connecting the two base guide wire seams 43 is parallel to the line connecting the laser emitter 2 and the laser receiver 3; the number of the base guide rails 41 is 2, and the base guide rails 41 are installed on the inner side wall of the base 4, and the two base guide rails 41 are symmetrically arranged, and the line connecting the two base guide rails 41 is perpendicular to the line connecting the laser emitter 2 and the laser receiver 3;

[0067] There are two base disc seams 42 , which are opened on the side wall of the base guide rail 41 , match the shape of the base guide rail 41 , and are connected to the base guide rail 41 ; both the base guide rail 41 and the base disc seam 42 are used to install the shading optical disc.

[0068] The device for measuring the rotation angle of the catheter guidewire also includes a laser transmitter power line 21 and a laser receiver power line and signal line 31; one end of the laser transmitter power line 21 is connected to the laser transmitter 2, and the other end passes through the base 4 to be connected to an external power supply and / or controller; one end of the laser receiver power line and signal line 31 is connected to the laser receiver 3, and the other end passes through the base 4 to be connected to an external power supply and / or controller.

[0069] The shading disc comprises a left half shading disc 5 and a right half shading disc 6 connected to each other; Figure 10As shown, the left half-shielding optical disc 5 and the right half-shielding optical disc 6 both include a shielding optical disc rubber surface 51, a disc shading portion 52, a disc light-transmitting portion 53 and a disc step structure 54; the disc step structure 54 is installed at the center of the left half-shielding optical disc 5, and the disc step structure 54 is provided with a left half-duct guide wire fixing position and a shielding optical disc rubber surface 51; the shielding optical disc rubber surface 51 is provided on the side wall where the left half-duct guide wire fixing position is located; the left half-shielding optical disc 5 and the right half-shielding optical disc 6 have the same shape and size; the left half-shielding optical disc 5 and the right half-shielding optical disc 6 are bonded to each other through the two shielding optical disc rubber surfaces 51; the left half-duct guide wire fixing position and the right half-duct guide wire fixing position of the right half-shielding optical disc 6 form a duct guide wire fixing position; the tube guide wire 1 passes through the shielding optical disc through the duct guide wire fixing position, and is bonded to the duct guide wire fixing position.

[0070] In a preferred embodiment, the base guide wire slit 43 is a strip-shaped slit, and the length of the base guide wire slit 43 extends in the vertical direction; the bottom end of the guide wire slit 43 is at the same height as the catheter guide wire fixing position.

[0071] The working principle of the present invention is as follows:

[0072] This device is used to measure the rotation angle of the catheter guidewire during the debugging process and is placed at the tail end of the catheter guidewire. The direction of the light beam emitted by the laser emitter 2 is parallel to the catheter guidewire. When the light beam reaches the laser receiver 3 from the laser emitter 2, the signal line of the laser receiver 3 outputs a high level. Conversely, when the light beam is blocked, the signal line outputs a low level. The left half-shielding optical disc 5 and the right half-shielding optical disc 6 are glued together and glued to the catheter guidewire. They can rotate with the rotation of the catheter guidewire. Both are perpendicular to the direction of the catheter guidewire. Because the left and right half-shielding optical discs 6 are engraved with evenly distributed disc light-shielding parts 52 and disc light-transmitting parts 53. When the catheter guidewire rotates with the left and right half-shielding optical discs 6, the switching of the high and low levels of the signal line of the laser receiver 3 can be detected.

[0073] In actual use, the resistance torque of the catheter guide wire rotating in the blood vessel is very small, and the test device will inevitably bring a certain load to the rotation of the catheter guide wire. The resistance on the test device should be as small as possible to ensure the reliability and credibility of the test results. The present invention uses a method of bonding with the catheter guide wire to suspend the left and right half-shielded optical discs 6 in the air to reduce the resistance torque. For a light disc weighing about 10g and with a radius of 3cm, its moment of inertia is J=1 / 2*mr2=4.5*10^(-6)kg·m2. If it produces =10rad / s2, the resistance torque is T=J· =4.5*10^(-5)N·m=0.0045cN·m. This resistance is still relatively small compared to the resistance encountered during the catheter guidewire test. The rubber surface parts on the left and right half-shielding discs should have a certain flexibility to ensure that the rubber surface parts can better wrap the catheter guidewire. At the same time, this part also requires a certain rigidity to meet the motion transmission requirements. The light-transmitting and light-shielding widths of the left and right light-shielding discs will determine the accuracy of the test and can be adjusted as needed. The present invention can quantitatively measure the angles reached by the catheter guidewire at multiple times, which is extremely helpful for analyzing the rotation performance of the catheter guidewire.

[0074] The present invention also provides a method for assembling a device for measuring the rotation angle of a catheter guidewire, which is used to assemble the device for measuring the rotation angle of a catheter guidewire, comprising the following steps:

[0075] S1. Place the catheter guidewire 1 into the base guidewire slit 43;

[0076] Specifically, such as Figure 5 As shown, the catheter guidewire 1 is placed into the base guidewire slit 43 , so that the catheter guidewire is basically fixed at the desired position and the catheter guidewire can rotate freely at the bottom of the base guidewire slit 43 .

[0077] S2. Use the first auxiliary tool to insert the left half-shielded optical disc 5 through the left base guide rail 41;

[0078] The first auxiliary tool is a left disc holder 7; the left disc holder 7 includes a first cylindrical body 71 and a first head 72 connected to each other. The first cylindrical body 71 is provided with a slot for accommodating the left semi-shielded disc 5. One end of the first cylindrical body 71 is adapted to mate with the step structure 54. The left disc holder 7 is further provided with two passages, both extending along the length of the first cylindrical body 71 and extending symmetrically through the first cylindrical body 71.

[0079] Specifically, the left half-shielded optical disc 5 is placed at the front end of the left disc holder 7 by relying on its disc step structure 54; Figure 6 The left half-shielded optical disc 5 and the left disc holder 7 are integrally inserted into the interior of the base 4 , wherein the left disc holder 7 slides in along the left base guide rail 41 , and the left half-shielded optical disc 5 enters from the base disc gap 42 .

[0080] S3. Use a second auxiliary tool to insert the right half-shielded optical disc 6 through the right base guide rail 41;

[0081] The second auxiliary tool is a right pan bracket 8; the structure of the right pan bracket 8 is the same as that of the left pan bracket 7, and is arranged symmetrically with the left pan bracket 7;

[0082] Specifically, the right half-covered optical disc 6 is placed at the front end of the right disc holder 8 by relying on its disc step structure 54; the right half-covered optical disc 6 and the right disc holder 8 are inserted into the base 4 as a whole, wherein the right disc holder 8 slides in along the right base guide rail 41, and the right half-covered optical disc 6 enters from the base disc gap 42.

[0083] S4. Use a third auxiliary tool to connect the left half-shielded optical disc 5, the right half-shielded optical disc 6, and the catheter guide wire 1 to each other;

[0084] like Figure 7 As shown, the third auxiliary tool is a left pan push rod 9 and a right pan push rod 10; the left pan push rod 9 includes a second cylinder 91 and a second head 92 connected to each other, and the second cylinder 91 includes a first rod portion and a second rod portion arranged symmetrically; the outer diameters of the first rod portion and the second rod portion match the upper channel of the first cylinder 71; the structure of the right pan push rod 10 is the same as that of the left pan push rod 9;

[0085] Specifically, insert the left disk push rod 9 and push the left disk push rod 9 inward along the channel of the left disk bracket 7, as shown in FIG. Figure 7 Then, insert the right disk push rod 10 and push the right disk push rod 10 inward along the channel of the right disk bracket 8; at this time, the cross-sectional view of the device is as follows Figure 4 As shown, the left disk pushing rod 9 presses against the left half-shielding optical disk 5, and the right disk pushing rod 10 presses against the right half-shielding optical disk 6, and then the left and right disk pushing rods 10 continue to be pushed inward, and the left and right half-shielding optical disks 6 will continue to move closer to the catheter guide wire, and finally the rubber surfaces 51 of the two shielding optical disks are bonded together with the catheter guide wire.

[0086] S5, removing the auxiliary tools to complete the assembly of the device for measuring the rotation angle of the catheter guidewire. In step S5, removing the auxiliary tools includes removing the first auxiliary tool, the second auxiliary tool, and the third auxiliary tool.

[0087] Specifically, the left and right push rods are withdrawn along the channel, and then the left and right disc holders 8 are withdrawn along the previously entered base rails 41. In this way, the left and right half-shielded discs 6 are separated from the left and right push rods and the left and right disc holders 8, and the left and right half-shielded discs 6 are stuck to the catheter guide wire like a piece of light paper. The left and right half-shielded discs 6 are installed, and the entire device is in a testable state. Figure 8 shown.

[0088] Figure 9 The figure shows the state of the left and right shielding discs together with the catheter guide wire when they rotate at any angle, simulating the general situation during the test. Figure 1 The test principle shown in . Figure 10 Schematic diagram of the left half-shielded optical disc 5. In actual use, the left and right half-shielded optical discs 6 can be exactly the same in shape and size.

[0089] The structure of the present invention will be described again below with reference to the accompanying drawings. Figure 2 This is an overall exterior view of the present invention. The entire device takes the form of a small box. The main components are housed within base 4. The catheter guidewire to be tested passes horizontally through base 4, which is covered by a top cover. The laser transmitter power cable 21 extends from the left side of base 4, while the laser receiver power cable and signal cable 31 extend from the right side. Figure 3 This is a schematic diagram of the interior of the present invention, which also includes a left disc bracket 7, a right disc bracket 8, a left disc push rod 9, and a right disc push rod 10. The catheter guidewire is placed in the base guidewire slit 43 to constrain the catheter guidewire to pass through the center of the device. The laser emitter 2 and the laser receiver are both fixed to the base 4 to ensure that the laser beam is parallel to the catheter guidewire. The left half-shielding disc 5 and the right half-shielding disc 6 are bonded together and glued to the catheter guidewire. Both are constrained by the base guide rails 41 on both sides, so that the two shielding discs always maintain a perpendicular relationship with the catheter guidewire. Figure 4 It also includes a left disc support 7, a right disc support 8, a left disc push rod 9 and a right disc push rod 10. Figure 4 As can be seen in the diagram, the left disc holder 7, right disc holder 8, left disc push rod 9, and right disc push rod 10 are arranged on either side of the left and right half-shielding discs, all perpendicular to the catheter guidewire. These components primarily facilitate the installation of the left and right half-shielding discs 6 and ensure accurate positioning of the discs, thereby ensuring accurate measurement of the catheter guidewire angle.

[0090] The device of the present invention has a simple principle and a concise structure, and the present invention provides an assembly method thereof, which can realize the rapid and accurate installation of key components such as the catheter guidewire, left and right half-shielded optical discs, while taking into account the efficiency and effect of the testing process.

[0091] The present invention utilizes a thin, light shielding disc with circumferential grooves and a laser detection element and other structures to analyze the effect of rotating the catheter guidewire when debugging the interventional surgical robot. This avoids the phenomenon that during surgery, the abnormality of the equipment can only be detected when the catheter guidewire is very obviously unable to rotate. Specifically, the present invention uses a shielding disc and a laser detection device to convert the angle signal of the catheter guidewire rotation into a high and low level voltage signal to achieve angle measurement. In addition, the present invention suspends the shielding disc and bonds it to the catheter guidewire, like a piece of paper, to reduce friction torque. The present invention utilizes a bracket, push rod and other devices that match the shielding disc to ensure the efficiency and effectiveness of the shielding disc installation.

[0092] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0093] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A device for measuring the rotation angle of a catheter guidewire, characterized in that: It comprises a laser transmitter (2), a laser receiver (3), a base (4) and a light shielding disc; The laser transmitter (2), the laser receiver (3) and the shading disk are all located in the base (4); A catheter guide wire fixing position is provided at the center of the shading disc, the catheter guide wire (1) passes through the shading disc through the catheter guide wire fixing position, and the catheter guide wire (1) is fixedly connected to the catheter guide wire fixing position; The shading disc comprises a disc light-shielding portion (52) and a disc light-transmitting portion (53); the disc light-shielding portion (52) and the disc light-transmitting portion (53) are alternately distributed along the circumference of the catheter guidewire fixing position; The laser emitter (2) and the laser receiver (3) are directly opposite each other, and the light direction of the laser emitter (2) is consistent with the length direction of the catheter guide wire (1); As the shutter disk rotates around its center, the light from the laser emitter (2) switches between the following two states: The light from the laser emitter (2) is blocked by the light shielding portion (52) of the disk; The light from the laser transmitter (2) passes through the light-transmitting portion (53) of the disk and is received by the laser receiver (3).

2. The device for measuring the rotation angle of a catheter guidewire according to claim 1, characterized in that: A base guide rail (41) is installed on the base (4), and a base plate seam (42) and a base guide wire seam (43) are opened on the base (4); The number of the base guide wire slits (43) is two, the base guide wire slits (43) are opened on the side wall of the base (4), and the two base guide wire slits (43) are symmetrically arranged, and the connecting line of the two base guide wire slits (43) is parallel to the connecting line of the laser transmitter (2) and the laser receiver (3); The number of the base guide rails (41) is two, the base guide rails (41) are mounted on the inner side wall of the base (4), and the two base guide rails (41) are symmetrically arranged, and the line connecting the two base guide rails (41) is perpendicular to the line connecting the laser transmitter (2) and the laser receiver (3); The number of the base disc slits (42) is two. The base disc slits (42) are opened on the side wall of the base guide rail (41) and match the shape of the base guide rail (41). The base guide rail (41) and the base disc slits (42) are both used to install the optical disk.

3. The device for measuring the rotation angle of a catheter guidewire according to claim 1, characterized in that: It also includes a laser transmitter power line (21) and a laser receiver power line and a signal line (31); One end of the laser emitter power line (21) is connected to the laser emitter (2), and the other end passes through the base (4) and is connected to an external power source and / or controller; One end of the laser receiver power line and signal line (31) is connected to the laser receiver (3), and the other end passes through the base (4) and is connected to an external power supply and / or controller.

4. The device for measuring the rotation angle of a catheter guidewire according to claim 2, wherein: The shading disc comprises a left half shading disc (5) and a right half shading disc (6) connected to each other; The left half-shielded optical disc (5) and the right half-shielded optical disc (6) both include a shielded optical disc rubber surface (51), a disc light-shielding portion (52), a disc light-transmitting portion (53), and a disc step structure (54); The disc step structure (54) is installed at the center of the left half of the optical disc (5), and the disc step structure (54) is provided with a left half of the guide wire fixing position and the optical disc rubber surface (51); the optical disc rubber surface (51) is provided on the side wall where the left half of the guide wire fixing position is located; The left half-shielded optical disc (5) and the right half-shielded optical disc (6) are of the same shape and size; The left half-shielding optical disc (5) and the right half-shielding optical disc (6) are bonded to each other via two shielding optical disc adhesive surfaces (51); The left half catheter guide wire fixing position and the right half catheter guide wire fixing position of the right half shielding disc (6) form a catheter guide wire fixing position; the catheter guide wire (1) passes through the catheter guide wire fixing position and penetrates the shielding disc, and is bonded to the catheter guide wire fixing position.

5. The device for measuring the rotation angle of a catheter guidewire according to claim 2, characterized in that: The base guide wire slit (43) is a strip-shaped slit, and the length of the base guide wire slit (43) extends in the vertical direction; The bottom end of the base guide wire slit (43) is at the same height as the catheter guide wire fixing position.

6. A method for assembling a device for measuring the rotation angle of a catheter guidewire, characterized in that: The device for measuring the rotation angle of a catheter guidewire according to claim 4 is assembled, comprising the following steps: S1. Place the catheter guide wire (1) into the base guide wire slit (43); S2, using a first auxiliary tool, insert the left half-shielded optical disc (5) through the left base guide rail (41); S3, using a second auxiliary tool, insert the right half-shielded optical disc (6) through the right base guide rail (41); S4. Using a third auxiliary tool, connect the left half-shielded optical disc (5), the right half-shielded optical disc (6), and the catheter guide wire (1) to each other; S5. Remove the auxiliary tools and complete the assembly of the device for measuring the rotation angle of the catheter guidewire.

7. The method for assembling the device for measuring the rotation angle of a catheter guidewire according to claim 6, characterized in that: In step S2, the first auxiliary tool is a left disc support (7); The left disc holder (7) comprises a first cylinder (71) and a first head (72) connected to each other, the first cylinder (71) is provided with a slot for accommodating the left half-shielded optical disc (5), one end of the first cylinder (71) is used to match the disc step structure (54) of the left half-shielded optical disc (5), and the left disc holder (7) is further provided with two channels both penetrating the first cylinder (71) along the length direction of the first cylinder (71), and the two channels are symmetrically arranged; In step S2, the left half-shielded optical disc (5) is placed at the front end of the left disc support (7) by relying on its disc step structure (54); The left half-shielded optical disc (5) and the left disc holder (7) are integrally inserted into the interior of the base (4), wherein the left disc holder (7) slides in along the left base guide rail (41), and the left half-shielded optical disc (5) enters from the base disc gap (42).

8. The method for assembling the device for measuring the rotation angle of a catheter guidewire according to claim 7, characterized in that: In step S3, the second auxiliary tool is a right disc support (8); The structure of the right disc bracket (8) is the same as that of the left disc bracket (7), and is arranged symmetrically with the left disc bracket (7); In step S3, the right half-shielded optical disc (6) is placed at the front end of the right disc support (8) by relying on its disc step structure (54); The right half-shielded optical disc (6) and the right disc holder (8) are inserted into the interior of the base (4) as a whole, wherein the right disc holder (8) slides in along the right base guide rail (41), and the right half-shielded optical disc (6) enters from the base disc gap (42).

9. The method for assembling the device for measuring the rotation angle of a catheter guidewire according to claim 8, characterized in that: In step S4, the third auxiliary tool is a left disk pushing rod (9) and a right disk pushing rod (10); The left disk push rod (9) comprises a second cylinder (91) and a second head (92) connected to each other, the second cylinder (91) comprising a first rod portion and a second rod portion arranged symmetrically; the outer diameters of the first rod portion and the second rod portion both match the upper channel of the first cylinder (71); The structure of the right disk push rod (10) is the same as that of the left disk push rod (9); In step S4, the left disc push rod (9) is placed and pushed inward along the channel of the left disc support (7), and then the right disc push rod (10) is placed and pushed inward along the channel of the right disc support (8); At this time, the left disc pushing rod (9) presses against the left half-shielding disc (5), and the right disc pushing rod (10) presses against the right half-shielding disc (6), and then the left and right disc pushing rods (10) continue to be pushed inward, and the left and right half-shielding discs will continue to move closer to the catheter guide wire, and finally the two half-shielding disc rubber surfaces (51) together with the catheter guide wire are bonded together.

10. The assembly method of the device for measuring the rotation angle of a catheter guidewire according to claim 9, characterized in that: In step S5 , removing the auxiliary tool includes removing the first auxiliary tool, the second auxiliary tool, and the third auxiliary tool.

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