An intervertebral disc pressure measuring device

Abstract

The present application relates to intervertebral disc pressure measuring device technical field, provide a kind of intervertebral disc pressure measuring device, including pressure measuring puncture needle, the outer wall of the pressure measuring puncture needle is equipped with guiding mechanism, the guiding mechanism includes the positioning sleeve movably installed in the outer wall of pressure measuring puncture needle, the inside of the positioning sleeve is equipped with rectangular through slot, the outer wall of the positioning sleeve movably connects with adjusting sleeve block.The present application can make adjusting sleeve block move along positioning sleeve by rotating adjusting sleeve block, so that extrusion cover moves synchronously and extrudes three positions of support column, so that each position of support column moves along the rectangular through slot opened in the inside of positioning sleeve to center, drive three arc-shaped guide plates to move and just adhere to the outer wall of pressure measuring puncture needle, at this time, push pressure measuring puncture needle, play the effect of conveniently guiding and stabilizing pressure measuring puncture needle, prevent pressure measuring puncture needle from producing wobble in puncture pressure measuring process, improve the stability of pressure measuring data.

Description

Technical Field

[0001] This invention relates to the field of intervertebral disc pressure measurement devices, and particularly to an intervertebral disc pressure measurement device. Background Technology

[0002] Intradiscal pressure is a core indicator for assessing the physiological state of the intervertebral disc, pathological degeneration, and biomechanical stability of the spine. Its accurate measurement is crucial for the diagnosis of spinal diseases, surgical planning, efficacy evaluation, and basic research. Therefore, intervertebral disc pressure measuring devices are widely used in hospital pain management departments for intervertebral disc pressure detection and treatment in patients. To this end, patent CN113974795B discloses a puncture needle, including an outer needle assembly and an inner needle assembly. The outer needle assembly includes a control valve and an outer needle tube connected to the outlet of the control valve. The inner needle assembly includes an inner needle tube and a needle cap connected to the inner needle tube. The outer diameter of the inner needle tube is smaller than the inner diameter of the outer needle tube. The inner needle tube is inserted into the outer needle tube and threadedly connected to the inlet of the control valve through the needle cap. A limiting clip is provided on the outer wall of the end of the outer needle tube away from the control valve to prevent the outer needle tube from falling off the puncture site after puncture. The puncture needle of the present invention achieves puncture through the inner needle assembly. After puncture, the inner needle assembly is removed, and liquid is injected into the intervertebral space through the outer needle assembly to hydraulically open the intervertebral space. Because the outer needle assembly is provided with a limiting clip, the puncture site can be closed after puncture, realizing stepwise puncture depth, reducing the number of tools used in spinal slippage surgery, and improving surgical efficiency. The existing technical solutions mentioned above have the following drawbacks: when used, the intervertebral disc is often punctured by a puncture needle to measure the pressure of the patient's intervertebral disc, but the puncture needle cannot be guided or corrected, causing the puncture needle to shake during the pressure measurement process, which affects the pressure measurement results. Summary of the Invention

[0003] The purpose of this invention is to provide an intervertebral disc pressure measuring device to solve the defect of existing intervertebral disc pressure measuring devices that cannot guide and correct the deviation of the puncture needle.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an intervertebral disc pressure measuring device, including a pressure measuring puncture needle; The outer wall of the pressure-measuring puncture needle is equipped with a guide mechanism; The guiding mechanism includes a positioning sleeve movably mounted on the outer wall of the pressure-measuring puncture needle. The positioning sleeve has a rectangular through groove inside. An adjusting sleeve block is movably connected to the outer wall of the positioning sleeve. The adjusting sleeve block has a threaded groove inside. A compression cover is fixedly connected to the outer wall of the adjusting sleeve block. A support column is movably connected to the inner wall of the compression cover. An arc-shaped guide plate is fixedly connected to the bottom of the support column. A baffle is fixedly connected to the outer wall of the support column. A return spring is fixedly connected to the bottom of the baffle.

[0005] Preferably, the outer wall of the positioning sleeve is provided with threads, and the positioning sleeve is threadedly connected to the adjusting sleeve block through a threaded groove, wherein the positioning sleeve is adapted to the threaded groove.

[0006] Preferably, the extrusion cover and the support column form a sliding structure, the support column is arranged in a ring around the central axis of the positioning sleeve, and the extrusion cover is tapered.

[0007] Preferably, one end of the support column is wedge-shaped, and the reset spring is sleeved and installed on the outer wall of the support column.

[0008] Preferably, the support column forms a sliding structure with the positioning sleeve through a rectangular through groove, and the arc-shaped guide plate is adapted to the pressure measuring puncture needle.

[0009] Preferably, a transmission retaining ring is fixedly connected to the outer wall of the adjusting sleeve, and an annular receiving plate is movably connected to the outer wall of the transmission retaining ring. A T-shaped clearance groove is provided inside the annular receiving plate. A movable column is fixedly connected to one side of the annular receiving plate, and a piston is fixedly connected to one end of the movable column. An air storage cylinder shell is movably connected to the outer wall of the piston, and a positioning suction cup is installed at the output end of the air storage cylinder shell.

[0010] Preferably, the transmission retaining ring is T-shaped, and the transmission retaining ring forms a rotating structure with the annular receiving plate through the T-shaped clearance groove.

[0011] Preferably, the movable columns are arranged in a ring around the central axis of the annular support plate, and the annular support plate and the positioning sleeve form a sliding structure.

[0012] Preferably, the piston and the gas storage cylinder shell form a sliding structure, and the positioning suction cup is fixedly installed on the outer wall of the positioning sleeve.

[0013] Preferably, a pressure sensor is installed on the outer wall of the pressure-measuring puncture needle, and the pressure sensor is symmetrically arranged about the central axis of the pressure-measuring puncture needle.

[0014] The intervertebral disc pressure measuring device provided by this invention has the following advantages: Equipped with a pressure-measuring puncture needle, a guide mechanism, and a pressure sensor, the adjusting sleeve can be rotated to move along the positioning sleeve. This causes the compression cover to move synchronously and compress the support columns at three positions. The support columns at each position move towards the center along the rectangular through-slots inside the positioning sleeve, which in turn moves the three arc-shaped guide plates to fit against the outer wall of the pressure-measuring puncture needle. At this point, pushing the pressure-measuring puncture needle allows it to be stably inserted into the patient's intervertebral disc. This facilitates stable guidance of the pressure-measuring puncture needle, prevents it from shaking during puncture and pressure measurement, and improves the stability of the pressure measurement data. Furthermore, with the combined action of the baffle and the return spring, the arc-shaped guide plates at each position can be reset, facilitating subsequent needle removal operations; Furthermore, by setting a pressure sensor at the tip of the pressure-measuring puncture needle, the pressure value inside the patient's disc can be read, thus realizing the pressure measurement of the intervertebral disc. With the guide mechanism in place, as the adjusting sleeve moves and rotates, it drives the annular receiving plate to slide along the positioning sleeve, causing the movable columns at each position to move. This drives the piston to slide along the air storage cylinder shell, generating negative pressure, which causes the four positioning suction cups to draw air inward. This allows the four positioning suction cups to adhere to the skin outside the patient's intervertebral disc, making it easier to position the positioning sleeve and improving the convenience and stability of subsequent needle insertion operations. Furthermore, with the combined action of the transmission retaining ring and the T-shaped clearance groove, the rotational movement of the adjusting sleeve block can be transmitted to the annular receiving plate, allowing the annular receiving plate to slide stably along the positioning sleeve. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 For the present invention Figure 1 Enlarged view of the structure at point A in the middle; Figure 4 This is a front view schematic diagram of the guiding mechanism of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the positioning suction cup of the present invention; Figure 6 This is a three-dimensional cross-sectional view of the gas storage tank shell of the present invention; Figure 7 This is a three-dimensional structural diagram of the arc-shaped guide plate of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the adjusting sleeve block of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the annular receiving plate of the present invention.

[0016] The following are the annotations in the figure: 1. Pressure testing puncture needle; 2. Guide mechanism; 21. Positioning sleeve; 22. Rectangular through groove; 23. Adjusting block; 231. Transmission retaining ring; 232. Annular receiving plate; 233. T-shaped clearance groove; 234. Movable column; 235. Piston; 236. Air storage tank shell; 237. Positioning suction cup; 24. Threaded groove; 25. Extrusion cover; 26. Support column; 27. Arc-shaped guide plate; 28. Baffle; 29. ​​Return spring; 3. Pressure sensor. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-9 The present invention provides an intervertebral disc pressure measuring device, including a pressure measuring puncture needle 1.

[0019] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a guide mechanism 2 is installed on the outer wall of the pressure-measuring puncture needle 1. The guide mechanism 2 includes a positioning sleeve 21 movably mounted on the outer wall of the pressure-measuring puncture needle 1. A rectangular through groove 22 is opened inside the positioning sleeve 21. An adjusting sleeve block 23 is movably connected to the outer wall of the positioning sleeve 21. A threaded groove 24 is opened inside the adjusting sleeve block 23. A compression cover 25 is fixedly connected to the outer wall of the adjusting sleeve block 23. A support column 26 is movably connected to the inner wall of the compression cover 25. An arc-shaped guide plate 27 is fixedly connected to the bottom of the support column 26. A baffle 28 is fixedly connected to the outer wall of the support column 26. A return spring 29 is fixedly connected to the bottom of the baffle 28. The outer wall of the positioning sleeve 21 is provided with threads. The positioning sleeve 21 is threadedly connected to the adjusting sleeve block 23 through the threaded groove 24. The positioning sleeve 21 and the threaded groove 24 are adapted to each other. The extrusion cover 25 and the support column 26 form a sliding structure. The support column 26 is arranged in a ring around the central axis of the positioning sleeve 21. The extrusion cover 25 is tapered. One end of the support column 26 is wedge-shaped. The return spring 29 is sleeved and installed on the outer wall of the support column 26. The support column 26 and the positioning sleeve 21 form a sliding structure through the rectangular through groove 22. The arc-shaped guide plate 27 is adapted to the pressure measuring puncture needle 1. The pressure sensor 3 is installed on the outer wall of the pressure measuring puncture needle 1. The pressure sensor 3 is symmetrically arranged around the central axis of the pressure measuring puncture needle 1.

[0020] By placing the positioning sleeve 21 on the patient's intervertebral disc and rotating the adjusting sleeve 23, the adjusting sleeve 23 can move along the positioning sleeve 21 because it is threadedly connected to the positioning sleeve 21 through the threaded groove 24. This causes the compression cover 25 to move synchronously and compress the support columns 26 at three positions. The support columns 26 at each position move towards the center along the rectangular through groove 22 inside the positioning sleeve 21. At this time, the baffle 28 will compress the reset spring 29, causing the three arc-shaped guide plates 27 to move and just touch the outer wall of the pressure measuring puncture needle 1. Then, push the pressure measuring puncture needle 1 to stably insert it into the patient's intervertebral disc. The pressure sensor 3 is set at the tip of the pressure measuring puncture needle 1 to read the pressure value inside the patient's disc, thus realizing the pressure measurement of the intervertebral disc.

[0021] Reference Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, a transmission retaining ring 231 is fixedly connected to the outer wall of the adjusting sleeve 23. An annular receiving plate 232 is movably connected to the outer wall of the transmission retaining ring 231. A T-shaped clearance groove 233 is provided inside the annular receiving plate 232. A movable column 234 is fixedly connected to one side of the annular receiving plate 232. A piston 235 is fixedly connected to one end of the movable column 234. An air storage cylinder shell 236 is movably connected to the outer wall of the piston 235. A positioning suction cup 237 is installed at the output end of the air storage cylinder shell 236. The transmission retaining ring 231 is T-shaped. The transmission retaining ring 231 and the annular receiving plate 232 form a rotating structure through the T-shaped clearance groove 233. The movable column 234 is arranged in a ring around the central axis of the annular receiving plate 232. The annular receiving plate 232 and the positioning sleeve 21 form a sliding structure. The piston 235 and the air storage cylinder shell 236 form a sliding structure. The positioning suction cup 237 is fixedly installed on the outer wall of the positioning sleeve 21.

[0022] As the adjusting sleeve 23 rotates and moves, it drives the transmission retaining ring 231 to rotate along the T-shaped clearance groove 233 inside the annular receiving plate 232, and pulls the annular receiving plate 232 to slide along the positioning sleeve 21, causing the movable columns 234 at each position to move, driving the piston 235 to slide along the air storage cylinder shell 236, generating negative pressure, causing the four positioning suction cups 237 to suck in air, thereby causing the four positioning suction cups 237 to adhere to the skin outside the patient's intervertebral disc, positioning the positioning sleeve 21. Conversely, when the adjusting sleeve 23 rotates in the opposite direction, it will push the piston 235 to slide back to its original position along the air storage cylinder shell 236, thereby causing the positioning suction cups 237 to release from adsorption and positioning.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A disc pressure measuring device, comprising a pressure measuring puncture needle (1); Its features are: The outer wall of the pressure-measuring puncture needle (1) is equipped with a guide mechanism (2); The guiding mechanism (2) includes a positioning sleeve (21) movably mounted on the outer wall of the pressure measuring puncture needle (1). The positioning sleeve (21) has a rectangular through groove (22) inside. An adjusting sleeve block (23) is movably connected to the outer wall of the positioning sleeve (21). A threaded groove (24) is opened inside the adjusting sleeve block (23). A compression cover (25) is fixedly connected to the outer wall of the adjusting sleeve block (23). A support column (26) is movably connected to the inner wall of the compression cover (25). An arc-shaped guide plate (27) is fixedly connected to the bottom of the support column (26). A baffle (28) is fixedly connected to the outer wall of the support column (26). A return spring (29) is fixedly connected to the bottom of the baffle (28).

2. The intervertebral disc pressure measuring device according to claim 1, characterized in that: The outer wall of the positioning sleeve (21) is provided with threads, and the positioning sleeve (21) is threadedly connected to the adjusting sleeve block (23) through the threaded groove (24). The positioning sleeve (21) and the threaded groove (24) are adapted to each other.

3. The intervertebral disc pressure measuring device according to claim 1, characterized in that: The extrusion cover (25) and the support column (26) form a sliding structure. The support column (26) is arranged in a ring around the central axis of the positioning sleeve (21), and the extrusion cover (25) is tapered.

4. The intervertebral disc pressure measuring device according to claim 1, characterized in that: One end of the support column (26) is wedge-shaped, and the reset spring (29) is sleeved and installed on the outer wall of the support column (26).

5. The intervertebral disc pressure measuring device according to claim 1, characterized in that: The support column (26) forms a sliding structure with the positioning sleeve (21) through the rectangular through groove (22), and the arc-shaped guide plate (27) is adapted to the pressure measuring puncture needle (1).

6. The intervertebral disc pressure measuring device according to claim 1, characterized in that: The outer wall of the adjusting sleeve (23) is fixedly connected to a transmission retaining ring (231), and the outer wall of the transmission retaining ring (231) is movably connected to an annular support plate (232). The annular support plate (232) has a T-shaped clearance groove (233) inside. A movable column (234) is fixedly connected to one side of the annular support plate (232), and a piston (235) is fixedly connected to one end of the movable column (234). An air storage cylinder shell (236) is movably connected to the outer wall of the piston (235), and a positioning suction cup (237) is installed at the output end of the air storage cylinder shell (236).

7. The intervertebral disc pressure measuring device according to claim 6, characterized in that: The transmission retaining ring (231) is T-shaped, and the transmission retaining ring (231) forms a rotating structure with the annular receiving plate (232) through the T-shaped relief groove (233).

8. The intervertebral disc pressure measuring device according to claim 6, characterized in that: The movable columns (234) are arranged in a ring around the central axis of the annular support plate (232), and the annular support plate (232) and the positioning sleeve (21) form a sliding structure.

9. The intervertebral disc pressure measuring device according to claim 6, characterized in that: The piston (235) and the gas storage cylinder shell (236) form a sliding structure, and the positioning suction cup (237) is fixedly installed on the outer wall of the positioning sleeve (21).

10. The intervertebral disc pressure measuring device according to claim 1, characterized in that: A pressure sensor (3) is installed on the outer wall of the pressure-measuring puncture needle (1), and the pressure sensor (3) is symmetrically arranged with respect to the central axis of the pressure-measuring puncture needle (1).

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