A respiratory motion tracking device and working method thereof

Abstract

The present invention discloses a respiratory movement tracking device and a working method thereof. The technical solution thereof mainly comprises a treatment bed and a respiratory detection device arranged on the treatment bed. The respiratory detection device comprises a respiratory conduction component, a guide component and a respiratory indicator component. The respiratory conduction component is arranged on the patient's belly, the guide component connects the respiratory conduction component and the respiratory indicator component, the respiratory transmission component drives the respiratory indicator component to move through the patient's respiratory movement, and the respiratory indicator component is used to mark the respiratory state on a series of images collected during breathing. The present invention provides a respiratory movement tracking device, which can accurately detect the patient's breathing, thereby naturally marking it on the image.

Description

Technical Field

[0001] The present invention relates to the technical field of medical image equipment, and more particularly to a respiratory motion tracking device and a working method thereof. Background Art

[0002] CT (Computed Tomography) is a computer tomography scan that uses precisely collimated X-ray beams, gamma rays, ultrasound, etc., together with extremely sensitive detectors to perform cross-sectional scans one after another around a certain part of the human body. It has the characteristics of fast scanning time and clear images, and can be used to detect a variety of diseases. According to the different rays used, it can be divided into: X-ray CT (X-CT) and gamma-ray CT (γ-CT), etc. There are three types of CT scanning: plain scanning, contrast-enhanced scanning and contrast scanning.

[0003] Respiratory motion is one of the important factors that cause inaccurate lesion positioning during scanning. If the influence of respiratory motion is ignored during patient treatment, the treatment site will not receive enough dosage, the surrounding healthy tissue will receive unnecessary drug doses, or both. Therefore, when constructing a motion model of lung tissue, it is necessary to pay attention to the impact of respiratory motion on lesions.

[0004] In order to eliminate or reduce the impact of artifacts caused by respiratory movement on CT scans of chest and abdominal organs, and to reflect the temporal changes of chest and abdominal tumors, so as to achieve accurate diagnosis and treatment, the concept of 4DCT was proposed. The time factor is incorporated into the three-dimensional reconstruction of CT scan images to form a dynamic 4D image.

[0005] At present, the general process of realizing 4D images of the chest and abdomen on a CT machine is as follows: during image acquisition, a respiratory monitoring system connected to the CT machine is used to monitor the patient's respiratory movement, and CT images and respiratory signals are acquired synchronously. The time information in the respiratory cycle is recorded on each layer of the acquired CT image, and then all CT images are grouped and three-dimensionally reconstructed according to the phase. The 3D images of each phase constitute a 3D image sequence that changes over time, namely a 4D image.

[0006] When acquiring the respiratory signal, a marker is attached to the abdomen of the human body, and the camera is used to synchronously track the marker during the CT scan. The obtained video is extracted as a single-frame image, and the center of mass of the marker is extracted. The relationship curve between the center of mass coordinates in any dimension and time is used as the respiratory curve to obtain a 4D image.

[0007] Although this method can obtain the breathing curve, the anti-interference ability of obtaining the breathing status through video is poor and the equipment cost is high. Summary of the invention

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a respiratory motion tracking device that can naturally mark the respiratory state on an image and has the advantages of high reliability and low cost.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A respiratory movement tracking device includes a respiratory detection device arranged on a treatment bed, the respiratory detection device includes a respiratory conduction component, a guide component and a respiratory indicator component, the respiratory conduction component is clamped on the patient's belly, the guide component guides the respiratory conduction component to connect with the respiratory indicator component, the respiratory conduction component drives the respiratory indicator component to move through the patient's respiratory movement, and the respiratory indicator component is used to mark the respiratory state on an image.

[0011] As a further improvement of the present invention, the breathing conduction component includes a protective soft sleeve, a breathing guide rope and a guide bag, the end portion of the breathing guide rope passes through the guide piece, the breathing guide rope hoop on one side of the guide piece is arranged on the patient's belly, and the breathing guide rope on the other side is arranged in parallel and connected to the breathing indicator, the protective soft sleeve is arranged on the part of the breathing guide rope hoop arranged on the patient's belly, and the guide bag is arranged on the part of the breathing guide rope connected to the breathing indicator.

[0012] As a further improvement of the present invention, the guide member is symmetrically provided with through holes for the breathing conduction component to pass through, and one side of the guide member is provided with a guide opening connected to the through hole, and a guide opening clamp is provided at the guide opening, and the guide opening clamp is used to clamp the breathing conduction component located in the through hole.

[0013] As a further improvement of the present invention, the breathing indicator includes an indicator rod, a rod sleeve, a reset sleeve rod and a reset elastic member. The indicator rod is inserted in the rod sleeve and arranged along the length direction of the treatment bed. The end of the rod sleeve away from the indicator rod is inserted into the reset sleeve rod and slides along the axis direction of the reset sleeve rod when subjected to external force. The reset elastic member is arranged in the reset sleeve rod, and the end of the reset elastic member away from the reset sleeve rod is connected to the rod sleeve. The reset sleeve rod is embedded with a suction member for sucking and positioning with the treatment bed.

[0014] As a further improvement of the present invention, a giveway groove is provided on the inner wall of the rod sleeve, a positioning pin and a positioning elastic member are arranged in the giveway groove, one end of the positioning elastic member is connected to the bottom wall of the giveway groove, and the other end is connected to the positioning pin, and a pin groove is provided on the outer wall of the indicator rod, and when the indicator rod is inserted into the rod sleeve, the positioning pin is inserted into the pin groove.

[0015] As a further improvement of the present invention, the guide member includes a guide box body and a guide pulley, the guide box body is arranged in the treatment bed body, the guide pulley is arranged in the guide box body, the inner wall of the guide box body is provided with a guide rail, the breathing indicator is slidably connected to the guide rail, one end of the breathing conduction member is connected to the breathing indicator, and the other end is wrapped around the guide rail and passes through the guide box body, and the end of the breathing conduction member away from the breathing indicator is fixed to the treatment bed body to clamp the patient's belly.

[0016] As a further improvement of the present invention, the breathing conduction component includes a breathing traction member, a traction soft sleeve and a fixing member, the traction soft sleeve is arranged outside the breathing traction member, and the fixing member is arranged at one end of the breathing traction member away from the breathing indicator member.

[0017] As a further improvement of the present invention, the breathing indicator includes a breathing detection rod, a position controlling elastic member and a guide seat arranged at both ends of the breathing detection rod, the guide seat is slidably connected to the guide slide rail, the breathing conduction component is connected to the breathing detection rod, one end of the position controlling elastic member is connected to the side of the breathing detection rod away from the breathing conduction component, and the other end is connected to the guide box body, and the axis of the position controlling elastic member is arranged perpendicular to the axis of the breathing detection rod.

[0018] A respiratory motion tracking device and a working method thereof are provided. The respiratory motion tracking device is provided, and the specific working steps are as follows:

[0019] S1: Extend one end of the breathing conduction member to the back of the patient, and wrap it around the patient's belly to clamp the patient's belly;

[0020] S2: clamping the breathing conduction component into the penetration hole through the guide clamp;

[0021] S3: inserting the indicator rod into the rod sleeve, and connecting the end of the breathing conduction member to the indicator rod, and the reset sleeve rod is attracted to the treatment bed under the action of the attraction member;

[0022] S4: During the detection, when the patient inhales, the breathing conduction component is driven to expand. Under the action of the breathing conduction component, the indicator rod is driven to move along the axis direction of the reset sleeve rod in the direction away from the reset sleeve rod. At this time, the reset elastic member is in a stretched state by an external force. When the patient exhales, the reset elastic member releases the elastic force to drive the breathing conduction component to contract, and at the same time drives the indicator rod to reset toward the reset sleeve rod. The range of image collection during the breathing process includes the indicator rod, and the position of the indicator rod in the image indicates the patient's breathing state when the image is collected.

[0023] S5: Calculate the current respiratory state value according to the position of the indicator rod on the image, and then group and three-dimensionally reconstruct according to the respiratory state value of the image to generate a 4D image.

[0024] A respiratory motion tracking device and method thereof, providing the respiratory motion tracking device, the specific working steps are:

[0025] H1: Pull the respiratory conduction member to clamp along the patient's belly;

[0026] H2: Use fixings to fix the respiratory conduction component to the treatment bed;

[0027] H3: During detection, when the patient inhales, the respiratory conduction component is driven to expand. Under the action of the respiratory conduction component, the indicator rod is driven to slide along the guide rail toward the guide pulley. At this time, the reset elastic member is in a state of tension by external force. When the patient exhales, the reset elastic member releases the elastic force to drive the respiratory conduction component to contract, and at the same time drives the indicator rod to reset and slide along the guide rail in the direction away from the guide pulley. The range of image collection during the breathing process includes the indicator rod, and the position of the indicator rod in the image indicates the patient's breathing state when the image is collected.

[0028] H4: According to the position of the indicator rod on the image, the current respiratory state value is calculated, and then grouping and three-dimensional reconstruction are performed according to the respiratory state value of the image to generate a 4D image.

[0029] The beneficial effects of the present invention are as follows: by arranging a breathing detection device on the treatment bed, the patient's breathing movement is detected, during the detection, the breathing conduction member conducts the patient's breathing, the guide member conducts the breathing movement, the breathing conduction member is connected to the breathing indicator, so that the breathing indicator is driven to move during the breathing conduction, and then the breathing state of the image collected during breathing can be reliably marked in the image through the position of the breathing indicator, thereby generating an accurate 4D image. This breathing detection device has the advantages of high reliability and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention;

[0031] Figure 2 A partial cross-sectional schematic diagram of the breathing detection device in Example 1;

[0032] Figure 3 To embody the connection method between the breathing conduction component and the breathing indicator in Example 1;

[0033] Figure 4 This is a schematic diagram of the three-dimensional structure of Embodiment 2 of the present invention;

[0034] Figure 5 This is a schematic diagram showing the structure of the breathing detection device in Example 2;

[0035] Figure 6A partial cross-sectional view showing the connection between the breathing conduction member and the breathing indicator in Example 2;

[0036] Figure 7 It is a partial cross-sectional schematic diagram of the fixing member in Example 2.

[0037] 1. Treatment bed; 2. Breathing detection device; 3. Breathing conduction member; 31. Protective soft cover; 32. Breathing guide rope; 33. Guide bag; 34. Breathing traction member; 35. Traction soft cover; 36. Fixing member; 361. Fixing block; 362. Fixing stud; 363. Anti-skid suction cup; 4. Guide member; 41. Through hole; 42. Guide port; 43. Guide port clamp; 44. Guide box; 45. Guide pulley; 46. Guide rail; 5. Breathing indicator; 51. Indicator rod; 511. Pin groove; 52. Rod sleeve; 521. Give way groove; 53. Reset sleeve rod; 54. Reset elastic member; 55. Suction member; 56. Breathing detection rod; 57. Position control elastic member; 58. Guide seat; 6. Positioning pin; 61. Positioning elastic member. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0039] Embodiment 1:

[0040] refer to Figures 1 to 3 As shown, a specific embodiment of a respiratory motion tracking device and method thereof of the present invention comprises a treatment bed 1 and a respiratory detection device 2 arranged on the treatment bed 1, wherein the respiratory detection device 2 comprises a respiratory conduction member 3, a guide member 4 and a respiratory indicator 5, wherein the respiratory conduction member 3 is used to be clamped on the patient's belly, thereby transmitting the patient's respiratory motion, and the guide member 4 connects the respiratory conduction member 3 and the respiratory indicator 5, and the respiratory conduction member drives the respiratory indicator 5 to move through the patient's respiratory motion. When performing detection, the respiratory indicator 5 is used to collect the respiratory motion and generate a respiratory curve in a 4D image according to the respiratory motion, thereby enabling auxiliary diagnosis of the disease according to the respiratory curve.

[0041] refer to Figures 1 to 3The guide member 4 is symmetrically provided with a through hole 41 for the respiratory conduction member 3 to pass through, and a guide port 42 communicating with the through hole 41 is provided on one side of the guide member 4. A guide port 42 clamp is provided at the guide port 42. The guide port 42 clamp is used to clamp the respiratory conduction member 3 located in the through hole 41. Since the guide port 42 clamp can be expanded, it is convenient for the operator to clamp the respiratory conduction member 3 into the through hole 41 through the guide port 42 clamp, thereby facilitating the guiding and positioning of the respiratory conduction member 3.

[0042] The breathing conduction member 3 includes a protective soft cover 31, a breathing guide rope 32 and a guide sleeve 33. The two ends of the breathing guide rope 32 can be respectively passed through the through holes 41 on the guide member 4, so that the breathing guide rope 32 can be hooped on the patient's belly, so that the breathing guide rope 32 forms a loop and a parallel section along the two sides of the guide member 4, respectively. The protective soft cover 31 is sleeved on the part of the breathing guide rope 32 that is hooped on the patient's belly, and the guide sleeve 33 is sleeved on the part of the breathing guide rope 32 that is connected to the breathing indicator 5. The breathing guide rope 32 is selected as a rigid rope, so that when the patient's breathing is conducted, the floating generated by the breathing on the belly can be accurately transmitted to the breathing indicator 5, and the movement of the breathing indicator 5 can be controlled, thereby forming a breathing curve;

[0043] The respiratory indicator 5 includes an indicator rod 51, a rod sleeve 52, a reset sleeve rod 53 and a reset elastic member 54. The indicator rod 51 is inserted into the rod sleeve 52 and arranged along the length direction of the treatment bed 1. The inner wall of the rod sleeve 52 is provided with a clearance groove 521, and a positioning pin 6 and a positioning elastic member 61 are arranged in the clearance groove 521. The positioning elastic member 61 is selected as a spring. One end of the positioning elastic member 61 is connected to the bottom wall of the clearance groove 521, and the other end is connected to the positioning pin 6. The outer wall of the indicator rod 51 is provided with a pin groove 511, so that when the indicator rod 51 is inserted into the rod sleeve 52, the end of the indicator rod 51 compresses the positioning pin 6 and pushes the positioning pin 6 to be completely compressed into the clearance groove 521. When the indicator rod 51 moves to the position where the pin groove 511 corresponds to the clearance groove 521, the positioning elastic member 61 releases the elastic force to push the positioning pin 6 and the pin groove The rod sleeve 52 is clamped in place by the spring 521, thereby fixing the indicator rod 51 and the rod sleeve 52. The end of the rod sleeve 52 away from the indicator rod 51 is inserted into the reset sleeve rod 53, and slides along the axial direction of the reset sleeve rod 53 when subjected to external force. The reset elastic member 54 is arranged in the reset sleeve rod 53. The reset elastic member 54 is selected as a spring. The end of the reset elastic member 54 away from the reset sleeve rod 53 is connected to the rod sleeve 52. The reset elastic member 54 is fixed to the reset sleeve rod 53 and the rod sleeve 52 by hot melt adhesive, so that the reset elastic member 54 is not easily separated from the reset sleeve rod 53 and the rod sleeve 52. The reset sleeve rod 53 is embedded with a suction member 55 for suction positioning with the treatment bed body 1, so that the reset sleeve rod 53 can be suction fixed to the treatment bed body 1, so that when performing breathing indication, it is not easy for the reset sleeve rod 53 to slide along the bed body.

[0044] The specific working steps of the overall respiratory motion tracking device are:

[0045] S1: Extend one end of the breathing conduction member 3 to the back of the patient, and wrap around the patient's belly to encircle the patient's belly;

[0046] S2: clamping the breathing conduction member 3 into the penetration hole 41 through the guide opening 42;

[0047] S3: insert the indicator rod 51 into the rod sleeve 52, and connect the end of the respiratory conduction member 3 to the indicator rod 51, and the reset sleeve rod 53 is attracted to the treatment bed body 1 under the action of the attraction member 55;

[0048] S4: During the detection, when the patient inhales, the breathing conduction component 3 is driven to expand. Under the action of the breathing conduction component 3, the indicator rod 51 is driven to move along the axis direction of the reset sleeve rod 53 in the direction away from the reset sleeve rod 53. At this time, the reset elastic member 54 is in a stretched state by an external force. When the patient exhales, the reset elastic member 54 releases the elastic force to drive the breathing conduction component 3 to contract, and at the same time drives the indicator rod 51 to reset toward the reset sleeve rod 53. The range of collecting images during the breathing process includes the indicator rod, and the position of the indicator rod in the image indicates the patient's breathing state when the image is collected.

[0049] S5: Calculate the current respiratory state value according to the position of the indicator rod on the image, and then group and three-dimensionally reconstruct according to the respiratory state value of the image to generate a 4D image.

[0050] Working principle and its effect:

[0051] By opening a guide opening 42 on the guide member 4 and providing a guide opening 42 clamp at the guide opening 42, the respiratory conduction member can be conveniently clamped into the penetration hole 41 from the guide opening 42, so that the overall respiratory conduction member 3 can be conveniently clamped on the patient's belly, and after the clamping is formed, the guiding and positioning function is achieved under the action of the guide member 4. When the patient performs respiratory movements, since the respiratory guide rope 32 is a rigid rope, the patient's respiratory movements can be accurately transmitted and are not easily hindered by the guide member 4. During the inhalation movement, the indicator rod 51 is driven to move, thereby stretching the reset elastic member 54. During the exhalation movement, the reset elastic member 54 drives the indicator rod 51 to reset. The range of image acquisition during the breathing process includes the indicator rod, so that the respiratory state is indicated by the position of the indicator rod on the image.

[0052] Embodiment 2:

[0053] This is a specific implementation of a respiratory motion tracking device and method of the present invention, which is different from Example 1 in that:

[0054] refer to Figures 4 to 7The guide member 4 includes a guide box body 44 and a guide pulley 45. A placement cavity for placing the guide box body 44 is also provided in the treatment bed body 1. A cover for sealing the placement cavity and allowing the respiratory conductive member 3 to pass through is provided on the placement cavity. A magnet is also provided at the bottom of the guide box body 44, so that the guide box body 44 can be moved along the length direction of the treatment bed body 1 according to the patient's body shape requirements. The guide box body 44 is provided in the treatment bed body 1, and the guide pulley 45 is provided in the guide box body 44. The inner wall of the guide box body 44 is provided with The guide rail 46, the breathing indicator 5 is slidably connected to the guide rail 46, one end of the breathing conduction component 3 is connected to the breathing indicator 5, and the other end is wound around the guide rail 46 and passes through the guide box body 44. When the end of the breathing conduction component 3 away from the breathing indicator 5 is fixed to the treatment bed body 1, it is clamped around the patient's belly. The breathing conduction component 3 includes a breathing traction component 34, a traction soft sleeve 35 and a fixing component 36. The traction soft sleeve 35 is sleeved outside the breathing traction component 34, and the fixing component 36 is arranged at the end of the breathing traction component 34 away from the breathing indicator 5. The breathing indicator 5 includes a breathing detection rod 56, a position control elastic member 57 and a guide seat 58 arranged at both ends of the breathing detection rod 56. The guide seat 58 is slidably connected to the guide slide rail 46. The breathing conduction member 3 is connected to the breathing detection rod 56. The position control elastic member 57 is selected as a spring. One end of the position control elastic member 57 is connected to the side of the breathing detection rod 56 away from the breathing conduction member 3, and the other end is connected to the guide box body 44. The axis of the position control elastic member 57 is connected to the breathing detection rod 56. The axis of the treatment bed 1 is vertically arranged, the fixing member 36 includes a fixing block 361 and a fixing stud 362 arranged in the fixing block 361, the fixing member 36 is connected to the end of the respiratory traction member 34, and the fixing block 361 is embedded with an anti-skid suction cup 363 on the side away from the respiratory traction member 34, so that when fixing, the anti-skid suction cup 363 is pushed to adsorb by rotating the fixing stud 362, so that the fixing block 361 is not easily separated from the treatment bed body 1, thereby realizing the positioning and fixing of the overall respiratory traction member 34.

[0055] The specific working steps of the overall respiratory motion tracking device are:

[0056] H1: Pull the respiratory conductive member 3 to clamp around the patient's belly;

[0057] H2: Use the fixing member 36 to fix the respiratory conduction member 3 on the treatment bed 1;

[0058] H3: During detection, when the patient inhales, the respiratory conduction component 3 is driven to expand. Under the action of the respiratory conduction component 3, the indicator rod 51 is driven to slide along the guide rail 46 toward the guide pulley 45. At this time, the reset elastic member 54 is in a stretched state by an external force. When the patient exhales, the reset elastic member 54 releases the elastic force to drive the respiratory conduction component 3 to contract, and at the same time drives the indicator rod 51 to reset and slide along the guide rail 46 away from the guide pulley 45. The range of image collection during the breathing process includes the indicator rod 51. The position of the indicator rod 51 in the image indicates the patient's breathing state when the image is collected.

[0059] H4: According to the position of the indicator rod on the image, the current respiratory state value is calculated, and then grouping and three-dimensional reconstruction are performed according to the respiratory state value of the image to generate a 4D image.

[0060] Working principle and its effect:

[0061] By arranging a guide pulley 45 in the guide box body 44, the breathing conduction member 3 is conducted under the action of the guide pulley 45. The breathing conduction member 3 is wound around the patient's belly, and one end is fixed to the treatment bed body 1 through a fixing member 36, so that when the patient breathes, the breathing conduction member 3 can be driven to contract, thereby transmitting the patient's breathing movement. When guiding the breathing, the breathing detection rod 56 in the breathing indicator 5 slides along the guide slide rail 46, so that when detecting, the breathing curve can be obtained by detecting the position of the breathing indicator 5, thereby analyzing the patient's breathing movement. When the patient inhales, the breathing detection rod 56 is driven to slide, and the control elastic member 57 is driven to stretch. When the patient exhales, the control elastic member 57 releases the elastic force to drive the breathing detection rod 56 to reset, so that the breathing conduction member 3 remains in contact with the patient's belly. During the breathing process, the range of collecting images includes the indicator rod, so that the breathing state is marked by the position of the indicator rod on the image.

[0062] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiment. In addition to being used to generate 4DCT, the present invention can also be used to generate 4D magnetic resonance images. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A respiratory motion tracking device, comprising a respiratory detection device (2) arranged on a treatment bed (1), characterized in that: The breathing detection device (2) comprises a breathing conduction component (3), a guide component (4) and a breathing indicator (5), wherein the breathing conduction component (3) is clamped on the patient's belly, the guide component (4) guides the breathing conduction component (3) to connect with the breathing indicator (5), the breathing conduction component drives the breathing indicator (5) to move through the patient's breathing movement, and the breathing indicator (5) is used to mark the breathing state on the image; The breathing conduction component (3) comprises a protective soft cover (31), a breathing guide rope (32) and a guide sleeve (33); the end portion of the breathing guide rope (32) passes through the guide member (4); the breathing guide rope (32) on one side of the guide member (4) is clamped on the patient's belly, and the breathing guide rope (32) on the other side is arranged in parallel and connected to the breathing indicator (5); the protective soft cover (31) is sleeved on the portion of the breathing guide rope (32) clamped on the patient's belly, and the guide sleeve (33) is sleeved on the portion of the breathing guide rope (32) connected to the breathing indicator (5); The guide member (4) is symmetrically provided with a through hole (41) for the breathing conduction member (3) to be passed through, and one side of the guide member (4) is provided with a guide opening (42) connected to the through hole (41), and a guide opening (42) clamp is provided at the guide opening (42), and the guide opening (42) clamp is used to clamp the breathing conduction member (3) located in the through hole (41); The breathing indicator (5) comprises an indicator rod (51), a rod sleeve (52), a reset sleeve rod (53) and a reset elastic member (54); the indicator rod (51) is inserted into the rod sleeve (52) and arranged along the length direction of the treatment bed (1); one end of the rod sleeve (52) away from the indicator rod (51) is inserted into the reset sleeve rod (53) and slides along the axis direction of the reset sleeve rod (53) when subjected to an external force; the reset elastic member (54) is arranged in the reset sleeve rod (53); one end of the reset elastic member (54) away from the reset sleeve rod (53) is connected to the rod sleeve (52); and a suction member (55) for suction-locking and positioning with the treatment bed (1) is embedded in the reset sleeve rod (53).

2. A respiratory motion tracking device according to claim 1, characterized in that: The inner wall of the rod sleeve (52) is provided with a clearance groove (521), and a positioning pin (6) and a positioning elastic member (61) are arranged in the clearance groove (521); one end of the positioning elastic member (61) is connected to the bottom wall of the clearance groove (521), and the other end is connected to the positioning pin (6); the outer wall of the indicator rod (51) is provided with a pin groove (511), and when the indicator rod (51) is inserted into the rod sleeve (52), the positioning pin (6) is inserted into the pin groove (511).

3. A respiratory motion tracking device according to claim 1, characterized in that: The guide member (4) comprises a guide box (44) and a guide pulley (45); the guide box (44) is arranged in the treatment bed (1); the guide pulley (45) is arranged in the guide box (44); a guide rail (46) is arranged on the inner wall of the guide box (44); the breathing indicator (5) is slidably connected to the guide rail (46); one end of the breathing conduction member (3) is connected to the breathing indicator (5); the other end is wound around the guide rail (46) and passes through the guide box (44); and the end of the breathing conduction member (3) away from the breathing indicator (5) is fixed to the treatment bed (1) to encircle the patient's belly.

4. A respiratory motion tracking device according to claim 3, characterized in that: The breathing conduction component (3) comprises a breathing traction member (34), a traction soft sleeve (35) and a fixing member (36), wherein the traction soft sleeve (35) is sleeved outside the breathing traction member (34), and the fixing member (36) is arranged at one end of the breathing traction member (34) away from the breathing indicator member (5).

5. A respiratory motion tracking device according to claim 4, characterized in that: The breathing indicator (5) comprises a breathing detection rod (56), a position-controlling elastic member (57) and a guide seat (58) arranged at both ends of the breathing detection rod (56); the guide seat (58) is slidably connected to the guide slide rail (46); the breathing conduction component (3) is connected to the breathing detection rod (56); one end of the position-controlling elastic member (57) is connected to a side of the breathing detection rod (56) away from the breathing conduction component (3); and the other end is connected to the guide box body (44); the axis of the position-controlling elastic member (57) is arranged perpendicular to the axis of the breathing detection rod (56).

6. A method for operating a respiratory motion tracking device, comprising providing the respiratory motion tracking device according to claim 5, wherein: The specific working steps are: S1: Extend one end of the breathing conduction member (3) to the back of the patient and wrap it around the patient's belly to encircle the patient's belly; S2: clamping the breathing conduction member (3) into the penetration hole (41) through the guide opening (42); S3: inserting the indicator rod (51) into the rod sleeve (52), and connecting the end of the respiratory conduction component (3) to the indicator rod (51), and the reset sleeve rod (53) is attracted to the treatment bed (1) under the action of the attraction member (55); S4: During the detection, when the patient inhales, the breathing conduction member (3) is driven to expand. Under the action of the breathing conduction member (3), the indicator rod (51) is driven to move along the axis of the reset sleeve rod (53) in a direction away from the reset sleeve rod (53). At this time, the reset elastic member (54) is in a state of being stretched by an external force. When the patient exhales, the reset elastic member (54) releases the elastic force to drive the breathing conduction member (3) to contract, and at the same time drives the indicator rod (51) to perform a reset movement toward the reset sleeve rod (53). During the breathing process, the range of the image collected includes the indicator rod, and the position of the indicator rod in the image indicates the patient's breathing state when the image is collected; S5: Calculate the current respiratory state value according to the position of the indicator rod on the image, and then group and three-dimensionally reconstruct according to the respiratory state value of the image to generate a 4D image.

7. A method for operating a respiratory motion tracking device, comprising providing the respiratory motion tracking device as claimed in claim 5, characterized in that: The specific working steps are: H1: Pull the respiratory conduction member (3) to clamp along the patient's belly; H2: Using a fixing member (36) to fix the respiratory conduction component (3) on the treatment bed (1); H3: During the detection, when the patient inhales, the breathing conduction member (3) is driven to expand. Under the action of the breathing conduction member (3), the indicator rod (51) is driven to slide along the guide rail (46) toward the guide pulley (45). At this time, the reset elastic member (54) is in a state of being stretched by an external force. When the patient exhales, the reset elastic member (54) releases the elastic force to drive the breathing conduction member (3) to contract, and at the same time drives the indicator rod (51) to perform a reset sliding movement along the guide rail (46) in a direction away from the guide pulley (45). During the breathing process, the range of the image collected includes the indicator rod, and the position of the indicator rod in the image indicates the patient's breathing state when the image is collected; H4: According to the position of the indicator rod on the image, the current respiratory state value is calculated, and then grouping and three-dimensional reconstruction are performed according to the respiratory state value of the image to generate a 4D image.

Images