In vitro puncture performance detection method and device of double-marking positioning puncture needle

Abstract

This invention provides a method and apparatus for testing the in vitro puncture performance of a dual-marker positioning puncture needle, relating to the field of material performance testing technology. The testing apparatus includes a testing platform, a pushing mechanism, and a puncture mechanism. A tray is mounted on the surface of the testing platform, and biological tissue for testing is placed on the surface of the tray. A plastic needle holder is provided at the top of the puncture needle body, and a testing sleeve is provided in the middle of the puncture mechanism. This invention efficiently completes the positioning and testing process by moving the puncture needle body and providing a positioning and receiving structure at the bottom, acquiring puncture pressure data and determining whether the needle is bent. This further improves the reliability and effectiveness of the final testing structure, avoids interference from elasticity differences in the biological skin components used for testing, and provides more intuitive and accurate information acquisition after puncture. Furthermore, each testing cycle is short, and the positioning is sufficiently precise.

Description

Technical Field

[0001] This invention relates to the field of material performance testing technology, specifically to a method and apparatus for testing the in vitro puncture performance of a dual-marker positioning puncture needle. Background Technology

[0002] Dual-labeled positioning needles are precision medical tools that combine image guidance and molecular labeling technology. Different fluorescent groups are labeled at both ends of the probe, and real-time signal detection is achieved using the fluorescence resonance energy transfer (FRET) principle. When the probe is cut, fluorescence is released to confirm positioning accuracy. Their design typically employs a coaxial cannula structure with an outer diameter larger than the matching biopsy needle to reduce tissue damage. Simultaneously, the needle core groove enhances ultrasound imaging, and a mis-disconnection protection mechanism is included. Since the puncture performance of the positioning needle directly affects the treatment outcome, the puncture performance of each positioning needle must be tested after its development.

[0003] In existing technologies, the in vitro puncture performance testing process for positioning puncture needles directly involves using a pressurizing mechanism to puncture the needle through the surface of a bio-skin component and collecting the puncture pressure. However, this approach may cause the needle to deviate or bend during testing of extremely fine positioning puncture needles, resulting in inaccurate test results. Furthermore, the determination process for different puncture depths is also prone to variations due to differences in the elasticity of the bio-skin component used for testing, making it difficult to accurately determine whether the needle has reached the set puncture depth. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an in vitro puncture performance testing method and apparatus for dual-marker positioning puncture needles, thereby solving the problems mentioned in the background art. The present invention efficiently completes the positioning and testing process by moving the puncture needle body under test and setting a positioning and receiving structure at the bottom, and obtains puncture pressure data. Simultaneously, it can obtain bending information after the puncture needle under test deforms and bends during the puncture process, further improving the reliability and effectiveness of the final testing structure. It avoids interference from the elasticity differences of the biological skin components used for testing, and the information obtained after puncture is in place is more intuitive and accurate, with a short testing cycle and sufficiently precise positioning.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an in vitro puncture performance testing device for a dual-marker positioning puncture needle, comprising a puncture needle body to be tested and a testing device body. The testing device body includes a testing platform, a pushing mechanism, and a puncture mechanism. A tray is mounted on the surface of the testing platform, and biological tissue for testing is placed on the surface of the tray. A plastic needle holder is provided at the top of the puncture needle body to be tested. A testing sleeve is provided in the middle of the puncture mechanism, and the plastic needle holder is located at the top of the testing sleeve. The puncture needle body to be tested passes downward through the inside of the testing sleeve. A linkage plate is provided on one side of the puncture mechanism. A support column is integrally formed on one end of the surface of the testing platform. A pushing mechanism is built at the top of the support column. A push plate is provided at the top of the pushing mechanism. The end of the push plate is used to abut against the surface of the linkage plate. A light-transmitting tube is installed at the end of the pushing mechanism. The inside of the light-transmitting tube is filled with water. The end of the puncture needle body to be tested is aligned with the top of the light-transmitting tube.

[0006] Furthermore, the testing platform includes a base plate, a back plate, a sliding groove, and a support plate. The surface of the base plate is welded with the support plate and the sliding groove. The two ends of the support plate are integrally formed with side baffles. Each side baffle has an observation port on its surface, and each observation port is in an inclined state. The surface of the back plate has support holes and guide holes.

[0007] Furthermore, the two ends of the back plate are screwed to the surface of the support column, and there are two guide holes, which are arranged symmetrically on both sides of the support hole.

[0008] Furthermore, the pushing mechanism includes a motor, a lead screw, an inclined plate, and an insertion plate. The motor is screwed onto the surface of the back plate, and a lead screw is inserted into the output end of the motor. An insertion plate is integrally formed at the end of the inclined plate, and a light-transmitting tube is embedded at the end of the insertion plate. A plastic film is laid on the top of the light-transmitting tube, and a movable frame is welded to one end of the inclined plate.

[0009] Furthermore, the top of the movable frame is integrally formed with a threaded sleeve, the top of the threaded sleeve is welded with an extension frame, the top of the extension frame is equipped with a push plate, the push plate and the inclined plate are kept parallel, and the surface of the inclined plate is aligned with the observation port.

[0010] Furthermore, a guide rod is welded to the end of the movable frame. The guide rod passes through the inside of the guide hole, and the lead screw passes through the inside of the support hole. Both ends of the inclined plate and the light-transmitting tube are aligned with the inner wall of the side baffle, and the end of the light-transmitting tube moves along the inner side of the observation port.

[0011] Furthermore, the puncture mechanism includes a sliding frame, a linkage plate, an electric lifting rod, and a detection sleeve. The surface of the sliding frame has a strip-shaped hole, and a lifting block is embedded in the inner side of the strip-shaped hole. Magnetic plates are attached to the top of the lifting block and the top of the strip-shaped hole. A telescopic rod is inserted into one side of the lifting block.

[0012] Furthermore, telescopic sleeves and bottom connecting plates are welded to both sides of the detection sleeve, and a second pressure-sensing module is installed on the surface of the detection sleeve. The telescopic rod is embedded inside the telescopic sleeve, and there are two telescopic rods and two telescopic sleeves.

[0013] Furthermore, the top of the linkage plate is integrally formed with a top connecting plate, the electric lifting rod is screwed to the bottom surface of the top connecting plate, the bottom of the electric lifting rod is screwed with a first pressure-sensing module, the first pressure-sensing module is used to press on the top of the plastic body needle holder, and the bottom of the sliding frame is embedded in the interior of the sliding groove.

[0014] A detection method using the above-mentioned detection device includes the following steps: S1. Place the pig's fat and muscle tissue onto the testing platform; S2. Install the puncture needle body to be tested and control the puncture needle body to be tested to move upward so that the end of the puncture needle body to be tested does not come into contact with the surface of the biological tissue to be tested, until it is reset to the initial position. S3. Apply dye to the bottom of the puncture needle body to be tested; S4. Activate the pushing mechanism to embed the end of the light-transmitting tube into the biological tissue to regulate the detection puncture depth, and fill the inside of the light-transmitting tube with water; S5. Start the puncture mechanism, collect puncture pressure data and determine the offset. If the offset is determined to be caused by the body of the puncture needle to be tested, repeat steps S1 to S4. S6. After completing a single test, control the puncture needle body to the initial state and move the pushing mechanism to repeat the test at multiple different depths.

[0015] The beneficial effects of this invention are: 1. In the in vitro puncture performance testing method of the dual-marker positioning puncture needle, the positioning and testing process can be completed efficiently by moving the puncture needle body under test and setting a positioning and receiving structure at the bottom, and the puncture pressure data can be obtained. At the same time, the bending information can be obtained after the puncture needle under test deforms and bends during the puncture process, which further improves the reliability and effectiveness of the final test structure.

[0016] 2. The in vitro puncture performance testing device for the dual-marker positioning puncture needle uses a pushing mechanism to control the insertion plate at the end to embed into the biological component for testing, and controls the light-transmitting tube to move to different depths in the biological tissue and place it at those positions. This allows for precise positioning in conjunction with the puncture mechanism inserted during subsequent testing. This structure can accurately determine whether the positioning puncture needle has reached the set puncture depth, avoiding interference from the elasticity differences of the biological skin component used for testing, and providing more intuitive and accurate information after the puncture is in place.

[0017] In this dual-marker positioning puncture needle extracorporeal puncture performance testing device, the puncture mechanism at the top and the push mechanism on the side can be synchronously controlled by a single power device. Therefore, the puncture needle body to be tested can be quickly aligned with the puncture area of ​​the bottom positioning push mechanism by setting any depth of the testing process. With the help of the sliding transmission mechanism, multiple testing processes can be quickly realized, and each testing cycle is short and the positioning is accurate enough. Attached Figure Description

[0018] Figure 1 This is a flowchart of the in vitro puncture performance testing method for the dual-marker positioning puncture needle of the present invention; Figure 2 This is a schematic diagram of the external puncture performance testing device for the dual-marker positioning puncture needle of the present invention; Figure 3 This is a schematic diagram of the detection stage of the present invention; Figure 4 This is a structural diagram of the pushing mechanism portion of the present invention; Figure 5 This is an enlarged view of the end of the light-transmitting tube of the present invention; Figure 6 This is a schematic diagram of the puncture mechanism of the present invention; Figure 7 This is a schematic diagram of the sliding frame portion of the present invention; Figure 8 This is a schematic diagram of the installation of the puncture needle body of the present invention; In the diagram: 1. Testing table; 2. Pushing mechanism; 3. Puncture mechanism; 4. Puncture needle body; 5. Plastic needle holder; 6. Base plate; 7. Support column; 8. Back plate; 9. Support hole; 10. Guide hole; 11. Support plate; 12. Side baffle; 13. Observation port; 14. Biological tissue; 15. Sliding groove; 16. Moving frame; 17. Guide rod; 18. Threaded sleeve; 19. Lead screw; 20. Motor; 21. 1. Extension frame; 22. Push plate; 23. Inclined plate; 24. Insertion plate; 25. Light-transmitting tube; 26. Plastic film; 27. Sliding frame; 28. Strip hole; 29. ​​Lifting block; 30. Telescopic rod; 31. Telescopic sleeve; 32. Linkage plate; 33. Top connecting plate; 34. Electric lifting rod; 35. First pressure sensing module; 36. Bottom connecting plate; 37. Magnetic suction plate; 38. Second pressure sensing module; 39. Detection sleeve. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1 to 8 This invention provides the following technical solution: an in vitro puncture performance testing device for a dual-marker positioning puncture needle, comprising a puncture needle body 4 to be tested and a testing device body. The testing device body includes a testing platform 1, a pushing mechanism 2, and a puncture mechanism 3. A tray 11 is mounted on the surface of the testing platform 1, and biological tissue 14 for testing is placed on the surface of the tray 11. A plastic needle holder 5 is provided at the top of the puncture needle body 4 to be tested. A testing sleeve 39 is provided in the middle of the puncture mechanism 3, and the plastic needle holder 5 is located at the top of the testing sleeve 39. The puncture needle body 4 to be tested passes downward through the inside of the detection sleeve 39. A linkage plate 32 is provided on one side of the puncture mechanism 3. A support column 7 is integrally formed on one end of the surface of the detection table 1. A pushing mechanism 2 is built on the top of the support column 7. A push plate 22 is provided on the top of the pushing mechanism 2. The end of the push plate 22 is used to abut against the surface of the linkage plate 32. A light-transmitting tube 25 is installed at the end of the pushing mechanism 2. The inside of the light-transmitting tube 25 is filled with clean water. The end of the puncture needle body 4 to be tested is aligned with the top of the light-transmitting tube 25. This in vitro puncture performance testing device is used to test the puncture performance of the double-marked positioning puncture needle during use. Specific test items include the pressure required for puncture and whether there is any deviation during the puncture process.

[0021] In use, pig fat and muscle tissue are placed on the testing platform 1, and the top and sides of the biological component are cut to align with the edges of the tray 11 and side baffle 12. The test needle body 4 is installed, and its upward movement is controlled so that the tip of the test needle body 4 does not contact the surface of the biological tissue 14 being tested, until it returns to its initial position. A staining agent is applied to the bottom of the test needle body 4. The pushing mechanism 2 is activated to embed the light-transmitting tube 25 at the tip into the biological tissue 14 for adjusting the detection... The puncture depth was measured, and the inside of the light-transmitting tube 25 was filled with clean water. The puncture mechanism 3 was activated, puncture pressure data was collected, and offset judgment was performed. If the offset was determined to be caused by the body of the puncture needle under test 4, the body of the puncture needle under test 4 was manually reset, and the position of the puncture mechanism 3 was changed. The pushing mechanism 2 did not need to be changed, and the test was repeated until the body of the puncture needle under test 4 punctured the top area of ​​the light-transmitting tube 25. After completing a single test, the body of the puncture needle under test 4 was controlled to the initial state, and the pushing mechanism 2 was moved to repeat the test at multiple different depths.

[0022] In this embodiment, the testing platform 1 includes a base plate 6, a back plate 8, a sliding groove 15, and a support plate 11. The support plate 11 and the sliding groove 15 are welded to the surface of the base plate 6. Side baffles 12 are integrally formed at both ends of the support plate 11. Each side baffle 12 has an observation port 13 on its surface, and each observation port 13 is inclined. The back plate 8 has support holes 9 and guide holes 10 on its surface. The two ends of the back plate 8 are screwed to the surface of the support column 7. There are two guide holes 10, and the two guide holes 10 are symmetrically arranged on both sides of the support hole 9.

[0023] Specifically, the surface of the testing station 1 is used to place the biological component to be tested via the push plate 22. In this embodiment, the biological component is the skin component of pig fat and muscle. The push mechanism 2 is supported on the testing station 1 by the back plate 8 at one end, so as to ensure that after the motor 20 in the push mechanism 2 is started, the push mechanism 2 can be controlled to move in the set path.

[0024] In this embodiment, the pushing mechanism 2 includes a motor 20, a lead screw 19, an inclined plate 23, and an insertion plate 24. The motor 20 is screwed onto the surface of the back plate 8. The output end of the motor 20 is fitted with the lead screw 19. The end of the inclined plate 23 is integrally formed with the insertion plate 24. The end of the insertion plate 24 is fitted with a light-transmitting tube 25. The top of the light-transmitting tube 25 is covered with a plastic film 26. A movable frame 16 is welded to one end of the inclined plate 23. The top of the movable frame 16 is integrally formed with a threaded sleeve 18. The top of the threaded sleeve 18 is welded with an extension frame 21. A push plate 22 is installed at the top of the extension frame 21. The push plate 22 and the inclined plate 23 are kept parallel. The surface of the inclined plate 23 is partially aligned with the observation port 13. The movable frame 16 is welded to a guide rod 17, which passes through the inside of the guide hole 10. The lead screw 19 passes through the inside of the support hole 9. Both ends of the inclined plate 23 and the light-transmitting tube 25 are aligned with the inner wall of the side baffle 12, and the end of the light-transmitting tube 25 moves along the inner side of the observation port 13. The insertion plate 24 at the end is embedded into the biological component for detection by the pushing mechanism 2, and the light-transmitting tube 25 is moved to different depths of the biological tissue 14 and placed at these positions. This allows for precise positioning in conjunction with the puncture mechanism 3 inserted during subsequent detection. This structure can accurately determine whether the puncture needle to be tested has reached the set puncture depth, avoiding interference from the elasticity difference of the biological skin component used for testing. Furthermore, the information obtained after puncture is in place is more intuitive and accurate.

[0025] Specifically, after starting the motor 20, the entire moving frame 16 can be moved by rotating the motor 20 in conjunction with the threaded sleeve 18. Since the lead screw 19 and the threaded sleeve 18 are both in an inclined state, the moving path of the moving frame 16 is also in an inclined state. At this time, the end insertion plate 24 and the inclined plate 23 can be directly embedded into the side of the test biological component. As the lead screw 19 rotates, the insertion plate 24 and the inclined plate 23 will gradually move towards a deeper position of the biological component. During this process, the moving direction of the moving frame 16 will be restricted and locked by the guide rod 17 to make its start-up more stable. The position of the puncture mechanism 3 will also be synchronously adjusted by the extension frame 21 and the push plate 22 at the top.

[0026] In this embodiment, the puncture mechanism 3 includes a sliding frame 27, a linkage plate 32, an electric lifting rod 34, and a detection sleeve 39. The sliding frame 27 has a strip-shaped hole 28 on its surface. A lifting block 29 is embedded inside the strip-shaped hole 28. Magnetic plates 37 are attached to the top of both the lifting block 29 and the top of the strip-shaped hole 28. A telescopic rod 30 is inserted into one side of the lifting block 29. Telescopic sleeves 31 and a bottom connecting plate 36 are welded to both sides of the detection sleeve 39. A second pressure-sensing module 38 is also installed on the surface of the detection sleeve 39. The telescopic rod 30 is embedded inside the telescopic sleeve 31, and there are two telescopic rods 30 and two telescopic sleeves 31. The top of the linkage plate 32 is integrally formed with a top connecting plate 33. The electric lifting rod 34 is screwed to the bottom surface of the top connecting plate 33. The bottom of the electric lifting rod 34 is screwed with a first pressure sensing module 35, which is used to press against the top of the plastic needle holder 5. The bottom of the sliding frame 27 is embedded in the sliding groove 15. The puncture mechanism 3 at the top and the push mechanism 2 on the side can be synchronously controlled by a single power device. Therefore, for any depth of detection process, the body of the puncture needle 4 to be tested can be quickly aligned with the puncture area of ​​the push mechanism 2 used for bottom positioning. With the sliding transmission mechanism, multiple detection processes can be quickly realized, and each detection cycle is short and the positioning is accurate enough.

[0027] Specifically, through the operation of the aforementioned pushing mechanism 2, the linkage plate 32 can be directly pushed by the push plate 22, thus controlling the electric lifting rod 34 and the bottom part of the test puncture needle body 4 to move horizontally. The bottom end of the test puncture needle body 4 will always be aligned with the top of the light-transmitting tube 25 at the end of the pushing mechanism 2 until the light-transmitting tube 25 moves to the preset detection area, at which point the motor 20 stops running. At this time, manually pulling the lifting block 29 downwards will drive the entire puncture mechanism 3 downwards through the telescopic rod 30 until the detection sleeve 39 is pressed against the surface of the biological component, thus providing support for the entire linkage plate 32, electric lifting rod 34, and other structures. At the same time, the detection sleeve 39 will also support the inner test puncture needle body 4, and the test puncture needle body 4 can still maintain a vertical state in this state. In this state, the electric lifting rod 34 is activated, driving the bottom first pressure-sensing module 35 to move downwards and press against the top of the plastic needle holder 5, so that the entire test puncture needle body 4 punctures downwards. Figure 2 and Figure 6As shown, if the puncture needle body 4 under test is laterally offset, the end of the puncture needle body 4 will not be able to puncture the plastic film 26 directly below, and the dye will not be able to contact the solution inside the light-transmitting tube 25. Therefore, the color change inside the light-transmitting tube 25 cannot be observed from the observation port 13 on the outside. If the puncture needle body 4 under test is longitudinally offset, the pressure change can be detected by the two sets of second pressure-sensing modules 38, ultimately determining the offset phenomenon. If no pressure change is detected in the second pressure-sensing modules 38, and the puncture needle body 4 under test successfully penetrates the inside of the plastic film 26, and the color change inside the light-transmitting tube 25 is observed from the observation port 13 on the outside, the current puncture pressure data can be obtained by collecting data from the first pressure-sensing module 35, thus obtaining the final effective puncture performance result. The pressure-sensing modules are all existing mature technologies and are not within the scope of protection of this invention; therefore, their internal structure and specifications will not be described in detail here.

[0028] This embodiment also provides a detection method using the above-described detection device, including the following steps: S1. Place the pig's fat and muscle tissue on the testing platform 1, and cut the top and sides of the biological component to make it flush with the edges of the tray 11 and the side baffle 12. S2. Install the puncture needle body 4 to be tested, and control the puncture needle body 4 to be tested to move upward so that the end of the puncture needle body 4 to be tested does not come into contact with the surface of the biological tissue 14 to be tested, until it is reset to the initial position. S3. Apply dye to the bottom of the puncture needle body 4 to be tested; S4. Activate the pushing mechanism 2 to embed the end light-transmitting tube 25 into the biological tissue 14 to regulate the detection puncture depth, and fill the inside of the light-transmitting tube 25 with water. S5. Start the puncture mechanism 3, collect puncture pressure data and determine the offset. If the offset is determined to be caused by the body of the puncture needle to be tested 4, repeat steps S1 to S4 until the body of the puncture needle to be tested 4 punctures the top area of ​​the light-transmitting tube 25. S6. After completing a single test, control the puncture needle body 4 to the initial state and move the pushing mechanism 2 to repeat the test at multiple different depths.

[0029] The above method enables efficient positioning and testing of the puncture needle body 4 by moving the needle body 4 under test and setting a positioning and receiving structure at the bottom. It also allows for the acquisition of puncture pressure data and the determination of bending information after the puncture needle under test deforms and bends during the puncture process, further improving the reliability and effectiveness of the final test structure.

[0030] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An in vitro puncture performance testing device for a dual-marker positioning puncture needle, comprising a puncture needle body (4) to be tested and a testing device body, characterized in that: The detection device body includes a detection platform (1), a pushing mechanism (2), and a puncture mechanism (3). A tray (11) is mounted on the surface of the detection platform (1), and biological tissue (14) for testing is placed on the surface of the tray (11). A plastic needle holder (5) is provided at the top of the puncture needle body (4). A detection sleeve (39) is provided in the middle of the puncture mechanism (3). The plastic needle holder (5) is located at the top of the detection sleeve (39). The puncture needle body (4) passes downwards through the inside of the detection sleeve (39). A linkage plate (32) is provided on one side of the puncture mechanism (3). A support column (7) is integrally formed on one end of the surface of the detection table (1). A pushing mechanism (2) is built on the top of the support column (7). A push plate (22) is provided on the top of the pushing mechanism (2). The end of the push plate (22) is used to abut against the surface of the linkage plate (32). A light-transmitting tube (25) is installed on the end of the pushing mechanism (2). The inside of the light-transmitting tube (25) is filled with clean water. The end of the puncture needle body (4) to be tested is aligned with the top of the light-transmitting tube (25).

2. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 1, characterized in that: The testing platform (1) includes a base plate (6), a back plate (8), a sliding groove (15), and a support plate (11). The support plate (11) and the sliding groove (15) are welded to the surface of the base plate (6). Side baffles (12) are integrally formed at both ends of the support plate (11). Each side baffle (12) has an observation port (13) on its surface, and each observation port (13) is in an inclined state. Support holes (9) and guide holes (10) are provided on the surface of the back plate (8).

3. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 2, characterized in that: The two ends of the back plate (8) are screwed to the surface of the support column (7). There are two guide holes (10), and the two guide holes (10) are arranged symmetrically on both sides of the support hole (9).

4. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 2, characterized in that: The pushing mechanism (2) includes a motor (20), a lead screw (19), an inclined plate (23) and an insertion plate (24). The motor (20) is screwed onto the surface of the back plate (8). The output end of the motor (20) is fitted with a lead screw (19). The end of the inclined plate (23) is integrally formed with an insertion plate (24). The end of the insertion plate (24) is fitted with a light-transmitting tube (25). The top of the light-transmitting tube (25) is covered with a plastic film (26). One end of the inclined plate (23) is welded with a movable frame (16).

5. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 4, characterized in that: The top of the movable frame (16) is integrally formed with a threaded sleeve (18), and an extension frame (21) is welded to the top of the threaded sleeve (18). A push plate (22) is installed at the top of the extension frame (21). The push plate (22) and the inclined plate (23) are kept parallel. The surface of the inclined plate (23) is aligned with the observation port (13).

6. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 5, characterized in that: The movable frame (16) has a guide rod (17) welded to its end. The guide rod (17) passes through the inside of the guide hole (10). The lead screw (19) passes through the inside of the support hole (9). The two ends of the inclined plate (23) and the light-transmitting tube (25) are aligned with the inner wall of the side baffle (12), and the end of the light-transmitting tube (25) moves along the inside of the observation port (13).

7. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 5, characterized in that: The puncture mechanism (3) includes a sliding frame (27), a linkage plate (32), an electric lifting rod (34), and a detection sleeve (39). The surface of the sliding frame (27) is provided with a strip hole (28). A lifting block (29) is embedded in the inner side of the strip hole (28). A magnetic suction plate (37) is attached to the top of the lifting block (29) and the top of the strip hole (28). A telescopic rod (30) is inserted into one side of the lifting block (29).

8. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 7, characterized in that: The detection sleeve (39) has a telescopic sleeve (31) and a bottom connecting plate (36) welded to its two sides respectively. A second pressure sensing module (38) is also installed on the surface of the detection sleeve (39). The telescopic rod (30) is embedded in the telescopic sleeve (31), and there are two telescopic rods (30) and two telescopic sleeves (31).

9. The extracorporeal puncture performance testing device for the dual-marker positioning puncture needle according to claim 8, characterized in that: The top of the linkage plate (32) is integrally formed with a top connecting plate (33), the electric lifting rod (34) is screwed to the bottom surface of the top connecting plate (33), the bottom of the electric lifting rod (34) is screwed with a first pressure sensing module (35), the first pressure sensing module (35) is used to press on the top of the plastic body needle holder (5), and the bottom of the sliding frame (27) is embedded in the interior of the sliding groove (15).

10. A detection method using the detection device as described in claim 1, characterized in that, Includes the following steps: S1. Place the pig's fat and muscle tissue onto the testing platform; S2. Install the puncture needle body to be tested and control the puncture needle body to be tested to move upward so that the end of the puncture needle body to be tested does not come into contact with the surface of the biological tissue to be tested, until it is reset to the initial position. S3. Apply dye to the bottom of the puncture needle body to be tested; S4. Activate the pushing mechanism to embed the end of the light-transmitting tube into the biological tissue to regulate the detection puncture depth, and fill the inside of the light-transmitting tube with water; S5. Start the puncture mechanism, collect puncture pressure data and determine the offset. If the offset is determined to be caused by the body of the puncture needle to be tested, repeat steps S1 to S4. S6. After completing a single test, control the puncture needle body to the initial state and move the pushing mechanism to repeat the test at multiple different depths.

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