A radiological examination auxiliary device for accurate positioning of pulmonary nodules

Abstract

The present invention discloses a radiological examination auxiliary device for accurate positioning of intrapulmonary nodules in the field of medical device technology, comprising a circular ring base, a ball joint seat and a positioning needle, a sticky layer is provided at the bottom of the circular ring base, a plurality of support frames are fixedly connected in an array at the top of the circular ring base, the support frames are fixedly connected to the ball joint seat at one end close to each other, a sphere corresponding to the ball joint seat is provided inside the ball joint seat, an auxiliary component for guiding the positioning needle is detachably connected to the sphere, the auxiliary component is connected to a ventilation pipe, the ventilation pipe is connected to a plurality of airbags inflated by the auxiliary component, and the airbags are all arranged between the sphere and the ball joint seat. The present invention is simple and easy to operate, and through the coordination between the circular ring support, the support frame, the ball joint seat, the sphere, the airbag and the auxiliary component, it is possible to facilitate the observation of the position between the puncture point and the positioning needle while assisting in the positioning of the fixed puncture needle, thereby facilitating the doctor's operation and reducing his burden.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical auxiliary equipment, and in particular is a radiological examination auxiliary device for accurately locating intrapulmonary nodules. Background Art

[0002] Pulmonary nodules refer to solid or subsolid lesions that are round in shape, less than 3 cm in diameter, and surrounded by air-containing lung tissue. According to the diameter, pulmonary nodules can be divided into micronodules and small nodules. Micronodules refer to nodules with a diameter of less than 5 mm, and small nodules refer to nodules with a diameter of 5 to 10 mm. The method of treating pulmonary nodules depends on the nature, cause, and symptoms of the nodules. For asymptomatic nodules of unknown nature, a follow-up observation strategy is usually adopted; for infectious nodules, anti-infection treatment can be performed; for malignant nodules or nodules that cause symptoms, surgical treatment, radiotherapy, chemotherapy, etc. may be required.

[0003] When treating lung nodules through surgery, a series of examinations are generally required before the operation, including chest CT examination, blood routine examination, etc., among which chest CT examination is used to determine the size and location of the lung nodules. Some lung nodules are hidden, such as those close to the visceral pleura or located deep in the lung lobes, or lung nodules with a diameter of less than 1 cm. These nodules may be difficult to directly touch or identify during surgery, so positioning is necessary so that the doctor can accurately find the location of the nodule to ensure that the lesion can be removed quickly and accurately during the operation. For some lung nodules with deeper or unclear locations, preoperative lung nodule positioning operations are required.

[0004] Nowadays, for preoperative positioning of lung nodules, doctors usually use their hands to control the positioning needle to perform puncture positioning. However, the positioning needle is generally thin and has a certain degree of flexibility, which makes it difficult to accurately insert the positioning needle into the patient's body, making it difficult for doctors to operate. In order to facilitate positioning and reduce the burden on the doctor's hands, some auxiliary positioning devices are used. The existing auxiliary positioning device usually fits the fixed component on the surface of the puncture point to fix the device, and then uses the moving component corresponding to the positioning needle to enable the positioning needle to be adjusted in multiple directions while fixing the puncture needle in a suitable position to improve the convenience of operation for medical staff. However, when the above-mentioned devices are fixed, since the fixed component needs to fit the puncture point, it blocks the field of vision around the puncture point, which makes it inconvenient for doctors to observe whether the positioning needle has penetrated the patient's body from the puncture point, thereby affecting the detection and positioning of lung nodules. For this reason, it is necessary to propose a radiological examination auxiliary device for precise positioning of intrapulmonary nodules, which can facilitate the observation of the position between the puncture point and the positioning needle while assisting in the positioning of the puncture needle. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a radiological examination auxiliary device for accurately positioning intrapulmonary nodules. The present invention is simple and easy to operate. Through the coordination between the annular support, the support frame, the ball joint seat, the sphere, the airbag and the auxiliary components, it can facilitate the observation of the position between the puncture point and the positioning needle while assisting in fixing the puncture needle, thereby facilitating the doctor's operation.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a radiological examination auxiliary device for precise positioning of intrapulmonary nodules, comprising a circular ring base, a ball joint seat and a positioning needle, a sticky layer is provided at the bottom of the circular ring base, a plurality of support frames are fixedly connected to the top of the circular ring base along its circumference, the support frames are fixedly connected to the ball joint seat at one end close to each other, a sphere corresponding to the ball joint seat is provided inside the ball joint seat, an auxiliary component for guiding the positioning needle is detachably connected to the sphere, the auxiliary component is connected to a ventilation pipe, the ventilation pipe is connected to a plurality of air bags inflated by the auxiliary component, and the air bags are all provided between the sphere and the ball joint seat.

[0007] The principle of the basic scheme is: the device is fixed to the area of ​​the puncture point by the ring base and the sticky layer at the bottom of the ring base, the positioning needle is guided by the auxiliary component, and the auxiliary component is rotated and moved by the cooperation between the sphere and the ball joint seat, so that the positioning needle is rotated by a certain angle, and at the same time, the airbag is inflated by the relative movement of the positioning needle in the auxiliary component, and then the movement of the sphere in the ball joint seat is limited by the expanded airbag.

[0008] The beneficial effects of the basic solution are: 1. The design of the circular base can provide certain support for the device while reducing the obstruction area of ​​the puncture point and its surrounding area, thereby facilitating the doctor's observation and operation, thereby improving the safety and reliability of the entire process.

[0009] 2. The design of the adhesive layer can stabilize the device around the puncture point, reduce the possibility of medical accidents caused by the sudden fall of the device during the doctor's operation, and improve stability.

[0010] 3. The design of the support frame can not only support the ball joint seat and some of its internal components to facilitate the doctor's operation and reduce the burden on the doctor's hands, but also the doctor can use the support frame to support his hands during operation, thereby further reducing the fatigue caused by his hands hanging in the air for a long time and reducing the possibility of misoperation.

[0011] 4. The sphere is fixed by the expansion of the airbag, thereby limiting the movement of the auxiliary components, thereby facilitating subsequent operations after the positioning needle reaches the target position, making it easier for the doctor to operate.

[0012] 5. The design of the auxiliary component can guide the positioning needle, so that the doctor can operate the positioning needle through the puncture point, thereby improving the positioning accuracy.

[0013] Furthermore, the auxiliary component includes a catheter detachably connected to the sphere, the catheter passes through the sphere and extends to the bottom of the ball joint seat, a baffle and a piston are provided inside the catheter, the baffle is fixedly connected to the inner wall of the catheter, the piston and the inner wall of the catheter are vertically slidably matched, the piston and the baffle are provided with corresponding through holes, the gap between the piston and the baffle constitutes an inflation chamber, the side wall of the catheter is provided with an inflation port connected to the inflation chamber, the inflation port is connected to the ventilation pipe, and the top of the piston is fixedly connected to a fixed component connected to the inflation chamber.

[0014] The beneficial effects of the basic scheme are: the movement of the positioning needle is guided by the catheter, the offset movement of the positioning needle is further limited by the corresponding through holes on the piston and the baffle, and at the same time, the air in the inflation chamber is squeezed by the downward movement of the piston in the catheter, so that the airbag is inflated through the ventilation tube to expand it and restrict the movement of the ball, and the positioning needle and the piston are fixed by the fixing component, so that the piston can move with the movement of the positioning needle.

[0015] Furthermore, a sealing ring is provided on the inner side wall of the through hole.

[0016] The beneficial effect of the basic solution is: the design of the sealing ring can form a sealed cavity in the inflation cavity after the positioning needle passes through the catheter, and then the airbag can be inflated to fix the ball, so as to facilitate the doctor's subsequent operations and reduce the doctor's burden.

[0017] Furthermore, the inner diameter of the sealing ring is smaller than the diameter of the positioning needle tube.

[0018] The beneficial effect of the basic solution is that when the positioning needle passes through the through holes on the piston and the baffle, the sealing performance of the connection between the positioning needle and the piston and the baffle is ensured by designing that the inner diameter of the sealing ring is smaller than the diameter of the positioning needle tube.

[0019] Furthermore, the fixing assembly includes a connecting tube fixed to the top of the piston and a locking cover threadedly connected to the connecting tube, a retaining ring is fixedly connected to the inner top wall of the connecting tube, a plurality of arc-shaped retaining plates are provided on the inner top wall of the locking cover along its circumference, the arc-shaped retaining plates and the locking cover are hinged at the connection, the arc length of one end of the arc-shaped retaining plate and the locking cover is greater than the other end of the arc-shaped retaining plate, the long arc end of the arc-shaped retaining plate is located above the short arc end, and the retaining ring is located within the movement trajectory of the arc-shaped retaining plate.

[0020] The beneficial effect of the basic scheme is: by rotating the locking cover, the second guide rod can move up and down along the connecting tube. When the locking cover moves downward, the baffle is squeezed by the baffle ring so that the baffle gradually moves closer, thereby squeezing the positioning needle tube to fix it on the piston, thereby facilitating the subsequent inflation of the airbag, facilitating the doctor's operation, and improving safety.

[0021] Furthermore, a torsion spring for resetting the arc-shaped baffle is provided at the hinged joint between the arc-shaped baffle and the locking cover.

[0022] The beneficial effect of the basic solution is that the arc-shaped baffle can be quickly reset through the torsion spring, thereby reducing the possibility of the arc-shaped baffle getting stuck on the positioning needle and affecting the doctor's subsequent operation, thereby improving reliability and facilitating the doctor's operation.

[0023] Furthermore, the arc-shaped baffles are all arranged at an angle.

[0024] The beneficial effect of the basic solution is that by setting the arc-shaped baffle to be tilted, the locking cover can be moved a short distance and the positioning needle can be fixed by the contraction of the arc-shaped baffle, thereby facilitating the doctor's subsequent operations and reducing the doctor's burden.

[0025] Furthermore, the detachable connection between the catheter and the sphere is a threaded connection.

[0026] The beneficial effect of the basic solution is that the threaded connection design between the catheter and the sphere can facilitate the replacement of the catheter, thereby reducing the contamination of the positioning needle after long-term use of the catheter, thereby improving safety and reliability.

[0027] Furthermore, the support frame has an arc-shaped structure.

[0028] The beneficial effect of the basic solution is that by designing the support frame as an arc-shaped structure, the possibility of deformation of the device when subjected to pressure is reduced, thereby improving safety.

[0029] Furthermore, a reflective layer is provided on the inner wall of the ring base.

[0030] The beneficial effect of the basic solution is: through the design of the reflective layer, the light is concentrated near the puncture point, making it easier for the doctor to observe the situation between the puncture point and the positioning needle, reducing the possibility of the positioning needle deviating from the puncture point for puncture, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an axonometric diagram of the radiological examination auxiliary device for accurately locating intrapulmonary nodules in this embodiment.

[0032] Figure 2 This is a front cross-sectional view of the sphere and auxiliary components of the radiological examination auxiliary device for precise positioning of intrapulmonary nodules in this embodiment.

[0033] Figure 3 This is a radiological examination auxiliary device for accurately locating lung nodules in this embodiment. Figure 2 Enlarged view of part A.

[0034] Figure 4 Schematic diagram of the torsion spring of the radiological examination auxiliary device for precise positioning of intrapulmonary nodules in this embodiment.

[0035] Figure 5Schematic diagram of the sealing ring of the radiological examination auxiliary device for precise positioning of intrapulmonary nodules in this embodiment.

[0036] The figure marks in the drawings of the specification include: 1. ring base; 2. support frame; 3. ball joint seat; 4. sphere; 5. locking cover; 6. connecting pipe; 7. conduit; 8. baffle; 9. vent pipe; 10. inflation port; 11. piston; 12. arc-shaped baffle; 13. baffle ring; 14. sealing ring; 15. torsion spring. DETAILED DESCRIPTION

[0037] The following is further described in detail through specific implementation methods:

[0038] Embodiment 1:

[0039] Basically as attached Figure 1 , Figure 2 and Figure 3 As shown: a radiological examination auxiliary device for precise positioning of intrapulmonary nodules, comprising a circular base 1, a ball joint seat 3 and a positioning needle; a sticky layer is bonded to the bottom of the circular base 1; a plurality of support frames 2 are fixedly connected to the top of the circular base 1 along its circumference by screws, and the ends of the support frames 2 close to each other are all screwed to the ball joint seat 3; a sphere 4 cooperating with the ball joint seat 3 is arranged inside the ball joint seat 3, and an auxiliary component for guiding the positioning needle is detachably connected to the sphere 4; the auxiliary component is connected to a ventilation tube 9, and the ventilation tube 9 is connected to a plurality of air bags inflated by the auxiliary component, and the air bags are all arranged between the sphere 4 and the ball joint seat 3.

[0040] The auxiliary component includes a catheter 7 detachably connected to the sphere 4; the catheter 7 passes through the sphere 4 and extends to the bottom of the ball joint seat 3; a baffle 8 and a piston 11 are provided inside the catheter 7, the baffle 8 is welded and fixed to the inner wall of the catheter 7, the piston 11 is vertically slidably matched with the inner wall of the catheter 7, the piston 11 and the baffle 8 are provided with corresponding through holes, the gap between the piston 11 and the baffle 8 constitutes an inflation chamber, the side wall of the catheter 7 is provided with an inflation port 10 connected to the inflation chamber, the inflation port 10 is connected to the ventilation pipe 9, and a fixing component connected to the inflation chamber is fixedly connected to the top of the piston 11, and a sealing ring 14 is bonded and fixed to the inner wall of the through hole, and the inner diameter of the sealing ring 14 is smaller than the diameter of the positioning needle needle tube, so that the positioning needle and the sealing ring 14 can be in close contact when the positioning needle passes through the through hole, so as to ensure the air tightness in the inflation chamber and facilitate the subsequent fixation of the sphere 4.

[0041] The fixing assembly comprises a connecting pipe 6 fixed to the top of the piston 11 and a locking cover 5 threadedly connected to the connecting pipe 6, a retaining ring 13 is bonded and fixed to the inner top wall of the connecting pipe 6, a plurality of arc-shaped retaining pieces 12 are arranged on the inner top wall of the locking cover 5 along its circumference, the arc-shaped retaining pieces (12) are all inclinedly arranged, the connection between the arc-shaped retaining pieces 12 and the locking cover 5 is hinged, the arc length of the end of the arc-shaped retaining piece 12 hinged to the locking cover 5 is greater than the end of the arc-shaped retaining piece 12 away from the locking cover 5, the long arc end of the arc-shaped retaining piece 12 is located above the short arc end of the arc-shaped retaining piece 12, and the retaining ring 13 is located within the movement trajectory of the arc-shaped retaining piece 12.

[0042] The specific implementation process is as follows: first, place the ring base 1 on the puncture point, and try to make the center of the ring base 1 close to the puncture point to ensure the subsequent observation and operation of the doctor. At the same time, gently press the ring base 1 to make the sticky layer at the bottom of the ring base 1 fit the patient's skin surface as much as possible, thereby reducing the possibility of medical accidents caused by the device falling off when the doctor operates the positioning needle.

[0043] Then the positioning needle is passed through the through holes on the piston 11 and the baffle 8. Since a sealing ring 14 is provided in the through hole and the inner diameter of the sealing ring 14 is smaller than the diameter of the positioning needle tube, after the positioning needle passes through the catheter 7, the sealing ring 14 will be tightly attached to the surface of the positioning needle, making the inflation cavity a relatively closed chamber, thereby facilitating the subsequent inflation of the airbag.

[0044] Then, the locking cover 5 threadedly connected to the connecting pipe 6 is rotated to make the locking cover 5 move downward along the connecting pipe 6. Since the arc-shaped baffle 12 is hinged inside the locking cover 5, the arc-shaped baffle 12 will move with the locking cover 5. Then, when the arc-shaped baffle 12 moves downward with the locking cover 5, since the baffle ring 13 is located in the movement trajectory of the inclined arc-shaped baffle 12, the arc-shaped baffle 12 will gradually pass through the center of the baffle ring 13. At the same time, since the diameter of the circle surrounded by the arc-shaped baffle 12 in the vertical direction gradually changes from top to bottom The arc baffle 12 is small, so the diameter of the circle when the arc baffle 12 passes through the baffle ring 13 will gradually increase, so that the baffle ring 13 contacts the arc baffle 12, and then when the arc baffle 12 continues to move downward, the baffle ring 13 will gradually squeeze the arc baffle 12, causing it to expand and contract inward, thereby reducing the diameter of the circle formed by the bottom of the arc baffle 12, and then gradually increasing the squeezing force on the positioning pin to increase the friction between the positioning pin and the arc baffle 12, so that when the positioning pin moves, the piston 11 can also move with the positioning pin.

[0045] Then push the positioning needle close to the patient's skin. At the same time, since the ball 4 and the ball hinge seat 3 are rotatably matched and the catheter 7 and the ball 4 are detachably fixedly connected, the angle of the positioning needle can be adjusted by rotating the ball 4, so that the positioning needle can accurately penetrate into the patient's body from the pre-set puncture point, and the doctor's hand can hold the support frame 2 to facilitate the force to penetrate the positioning needle into the patient's body; at the same time, after the puncture needle enters the patient's body, it is also necessary to accurately insert the positioning needle into the position of the lung nodule based on the CT image, and at the same time, it is also necessary to avoid the positioning needle from damaging other healthy tissues, and then the doctor is also required to adjust the angle of the positioning needle according to the actual situation. Generally, the positioning needle is thinner, and it is inconvenient for the doctor to grasp it to adjust the angle. Then, through the catheter 7, the positioning needle can change accordingly with the angle change of the catheter 7 so that the doctor can grasp it.

[0046] When the positioning needle gradually penetrates into the position of the lung nodule, the positioning needle will drive the piston 11 to move together, so that the piston 11 squeezes the air in the inflation chamber, and then sends this part of air into the airbag through the inflation port 10 and the ventilation tube 9 to expand the airbag. Since the airbag is located between the sphere 4 and the ball joint seat 3, it will squeeze the sphere 4 after expansion, so that the sphere 4 requires a large force to rotate. Then, after the positioning needle reaches the position of the posterior lung nodule, the doctor can place the positioning anchor line inside the positioning needle at the position of the lung nodule with one hand for positioning.

[0047] Embodiment 2:

[0048] The difference from the above embodiment is that, as shown in the attached Figure 3 and Figure 4 As shown, the hinged joints of the arc-shaped baffle 12 and the locking cover 5 are both clamped with a torsion spring 15 for resetting the arc-shaped baffle 12 .

[0049] The specific implementation process is as follows: when the positioning needle does not need to be fixedly connected to the piston 11, the locking cover 5 is rotated to make it rise, reducing the pressure of the retaining ring 13 on the arc-shaped baffle 12, so that the pressure of the arc-shaped baffle 12 on the positioning needle is reduced, thereby releasing the fixation between the positioning needle and the piston 11. Since the arc-shaped baffle 12 is hinged to the locking cover 5 and the arc-shaped baffle 12 is relatively small, it may not be reset immediately, so that the arc-shaped baffle 12 is quickly reset by the torsion spring 15, reducing the restriction imposed by the arc-shaped baffle 12 when the positioning needle is pulled out, facilitating the extraction of the positioning needle, thereby improving the reliability and practicality of the device, and at the same time improving the efficiency of the entire positioning process.

[0050] Embodiment 3:

[0051] The difference from the above embodiment is that, as shown in the attached Figure 2 As shown: the detachable connection between the catheter 7 and the sphere 4 is a threaded connection, which is convenient for replacing the catheter 7 and ensures that the inside of the catheter 7 is clean, so as to improve safety and reliability.

[0052] The specific implementation process is as follows: when the lung nodule positioning is completed and the positioning needle is pulled out from the patient's body, some of the patient's blood will remain on the surface of the positioning needle. When the positioning needle is pulled out from the catheter 7, the surface of the positioning needle is in close contact with the sealing ring 14 in the through hole on the baffle 8 and the piston 11, so that the blood on the surface of the positioning needle will adhere to the surface of the sealing ring 14. If the catheter 7 is used again for lung nodule positioning, the blood on the sealing ring 14 inside the catheter 7 will contact the positioning needle, and then the blood of the previous patient will be brought into the body of the next patient, which will cause some medical accidents of latent infectious diseases between patients. Therefore, the catheter 7 needs to be replaced after one use to avoid the occurrence of the above-mentioned medical accidents and improve safety. At the same time, in order to facilitate the replacement and installation of the catheter 7 and ensure stability after installation, a threaded connection is adopted between the catheter 7 and the sphere 4.

[0053] Embodiment 4:

[0054] The difference from the above embodiment is that, as shown in the attached Figure 1 As shown: the support frame 2 is an arc-shaped structure.

[0055] The specific implementation process is as follows: when the doctor supports the hand through the support frame 2 to relax appropriately, since the overall size of the present invention is relatively small, the arc-shaped support frame 2 can improve the overall strength of the present invention and reduce the possibility of significant deformation of the present invention due to artificial pressure, thereby improving the safety and reliability of the present invention.

[0056] Embodiment 5:

[0057] The difference from the above embodiment is that, as shown in the attached Figure 1 As shown: a reflective layer is bonded to the inner wall of the ring base 1.

[0058] The specific implementation process is as follows: when performing the lung nodule positioning operation, the doctor's limbs need to be close to the puncture point in order to operate the positioning needle, which will block part of the light. At the same time, since the device itself will block part of the light, it will make the area near the puncture point darker, which is not conducive to observation and operation. Then, through the reflective layer on the inner wall of the ring base 1, the light is gathered around the puncture point, which is convenient for subsequent doctor operations and reduces the possibility that the positioning needle does not enter the patient's body at the pre-set puncture point.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A radiological examination auxiliary device for accurate positioning of intrapulmonary nodules, characterized in that: The invention comprises a circular base (1), a ball joint seat (3) and a positioning needle. The bottom of the circular base (1) is provided with a sticky layer. The top of the circular base (1) is fixedly connected with a plurality of support frames (2) along its circumferential direction. The support frames (2) are fixedly connected with the ball joint seat (3) at one end close to each other. A sphere (4) corresponding to the ball joint seat (3) is provided inside the ball joint seat (3). An auxiliary component for guiding the positioning needle is detachably connected to the sphere (4). The auxiliary component is connected with a ventilation pipe (9). The ventilation pipe (9) is connected with a plurality of air bags inflated by the auxiliary component. The air bags are arranged between the sphere (4) and the ball joint seat (3).

2. The radiological examination auxiliary device for accurate positioning of intrapulmonary nodules according to claim 1, characterized in that: The auxiliary component comprises a conduit (7) detachably connected to the ball (4), the conduit (7) passing through the ball (4) and extending to the bottom of the ball joint seat (3), a baffle (8) and a piston (11) are arranged inside the conduit (7), the baffle (8) is fixedly connected to the inner side wall of the conduit (7), the piston (11) and the inner side wall of the conduit (7) are vertically slidably matched, the piston (11) and the baffle (8) are both provided with mutually corresponding through holes, the gap between the piston (11) and the baffle (8) constitutes an inflation chamber, the side wall of the conduit (7) is provided with an inflation port (10) connected to the inflation chamber, the inflation port (10) is connected to the ventilation pipe (9), and the top of the piston (11) is fixedly connected to a fixed component connected to the inflation chamber.

3. The radiological examination auxiliary device for accurate positioning of pulmonary nodules according to claim 2, characterized in that: The inner side walls of the through holes are each provided with a sealing ring (14).

4. The radiological examination auxiliary device for accurate positioning of pulmonary nodules according to claim 3, characterized in that: The inner diameter of the sealing ring (14) is smaller than the diameter of the positioning needle tube.

5. The radiological examination auxiliary device for accurate positioning of intrapulmonary nodules according to claim 2, characterized in that: The fixing assembly comprises a connecting pipe (6) fixed to the top of the piston (11) and a locking cover (5) threadedly connected to the connecting pipe (6); a retaining ring (13) is fixedly connected to the inner top wall of the connecting pipe (6); a plurality of arc-shaped retaining plates (12) are arranged on the inner top wall of the locking cover (5) along its circumference; the connection between the arc-shaped retaining plates (12) and the locking cover (5) is hinged; the arc length of one end of the arc-shaped retaining plates (12) hinged to the locking cover (5) is greater than the end of the arc-shaped retaining plates (12) away from the locking cover (5); the long arc end of the arc-shaped retaining plates (12) is located above the short arc end of the arc-shaped retaining plates (12); and the retaining ring (13) is located within the movement trajectory of the arc-shaped retaining plates (12).

6. The radiological examination auxiliary device for accurate positioning of pulmonary nodules according to claim 5, characterized in that: A torsion spring (15) for resetting the arc-shaped baffle (12) is provided at the hinged joint between the arc-shaped baffle (12) and the locking cover (5).

7. The radiological examination auxiliary device for accurate positioning of pulmonary nodules according to claim 6, characterized in that: The arc-shaped baffles (12) are all arranged in an inclined manner.

8. The radiological examination auxiliary device for accurate positioning of pulmonary nodules according to claim 2, characterized in that: The detachable connection between the conduit (7) and the sphere (4) is a threaded connection.

9. The radiological examination auxiliary device for accurate positioning of pulmonary nodules according to claim 1, characterized in that: The support frame (2) is an arc-shaped structure.

10. The radiological examination auxiliary device for accurate positioning of pulmonary nodules according to claim 1, characterized in that: The inner wall of the circular base (1) is provided with a reflective layer.

Images