An ultrasound-guided pressure monitoring epidural anesthesia positioning device

Abstract

The application relates to the technical field of medical devices, and discloses an ultrasound-guided pressure monitoring epidural anesthesia positioning device, which comprises a placing shell, an upper tray and a lower tray arranged in the placing shell, and a puncture component comprising an ultrasound positioning epidural puncture needle assembly and a puncture sensor assembly, wherein the ultrasound positioning epidural puncture needle assembly comprises a puncture needle seat. The ultrasound-guided pressure monitoring epidural anesthesia positioning device can accurately determine the position of a needle tip, effectively avoid complications such as rupture of the spinal cord, blood vessel injury and nerve injury caused by blind puncture, significantly improve anesthesia safety, and clearly display anatomical structures such as ligaments and the spinal cord through ultrasound guidance. The ultrasound-guided pressure monitoring epidural anesthesia positioning device can significantly improve the puncture success rate for obese, patients with spinal deformity and old patients who are difficult to puncture in a traditional way. Meanwhile, the puncture pressure sensor can continuously monitor and display the pressure change curve in the puncture process, provide objective and quantitative judgment basis, and reduce the dependence on the subjective experience of an operator.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a device for positioning epidural anesthesia with ultrasound-guided pressure monitoring. Background Technology

[0002] Spinal anesthesia (epidural anesthesia) is a common type of anesthesia. It achieves regional anesthesia by injecting anesthetic drugs into the epidural space of the spine. Since the epidural space is adjacent to the subarachnoid space, the injection site of the anesthetic drugs needs to be precisely controlled. Therefore, accurate judgment of the puncture needle tip position is crucial to ensuring the anesthetic effect and surgical safety.

[0003] Currently, the "blind puncture" method is mainly used for epidural anesthesia puncture in clinical practice. This means that doctors rely on the change in resistance by touch to determine whether the puncture needle has broken through the ligamentum flavum and entered the epidural space. The specific operation is as follows: use a syringe to draw up normal saline and connect it to the puncture needle. Slowly insert the needle while maintaining a constant pressure inside the syringe plug. When the bevel of the needle tip enters the epidural space, the resistance disappears significantly, and the normal saline can be pushed in smoothly. However, this method, which relies on the operator's subjective experience, has obvious drawbacks: First, there are individual differences in the thickness of the ligamentum flavum and the depth of the epidural space among different patients (the typical distance between the epidural space and the subarachnoid space is 4-6 mm, which can be reduced to 2-3 mm in patients with special physical conditions), and blind puncture is very likely to cause puncture failure or perforation of the dura mater. Second, there is a lack of objective and quantifiable judgment indicators, and the accuracy of operation is highly dependent on the doctor's experience, resulting in a long learning curve. Third, it is impossible to visualize the puncture path in real time, making it difficult to deal with complex cases such as obesity and spinal deformities. Summary of the Invention

[0004] Given the individual differences in ligamentum flavum thickness and epidural depth among different patients (the typical distance between the epidural space and the subarachnoid space is 4-6 mm, which can be reduced to 2-3 mm in patients with special physical conditions), blind puncture is prone to puncture failure or penetrating the dura mater. Furthermore, there is a lack of objective and quantitative judgment indicators, and the accuracy of the operation is highly dependent on the doctor's experience, resulting in a long learning curve. At the same time, it is impossible to visualize the puncture path in real time, making it difficult to deal with complex cases such as obesity and spinal deformities. Therefore, this invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a positioning device for epidural anesthesia with ultrasound-guided pressure monitoring. The purpose is to combine real-time ultrasound visualization guidance with puncture needle tip pressure monitoring, allowing doctors to adjust the needle insertion path under ultrasound image guidance. At the same time, the pressure waveform changes can be used to quantitatively determine whether the needle tip has entered the epidural space, achieving dual safety assurance of image guidance and pressure confirmation, and improving positioning accuracy.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for positioning epidural anesthesia with ultrasound-guided pressure monitoring, comprising: The placement component includes a placement housing, dialysis paper disposed on the surface of the placement housing, and an upper tray and a lower tray disposed inside the placement housing; The puncture component includes an ultrasonically guided epidural puncture needle assembly and a puncture sensor assembly. The ultrasonically guided epidural puncture needle assembly includes a puncture needle seat, a puncture needle disposed on one side of the puncture needle seat, a puncture needle blade disposed at the end of the puncture needle away from the puncture needle seat, and a miniature probe disposed inside the puncture needle seat and extending directly to the puncture needle blade, multiple sets of puncture needle scale lines disposed on the surface of the puncture needle, and blade imaging patterns disposed on the surface of the puncture needle near the puncture needle blade. The puncture sensor assembly includes a sensor chip, a transmission conduit disposed at one end of the sensor chip, with a connector connected to one end of the transmission conduit, and the puncture needle seat connected to the connector, a cable disposed at the other end of the sensor chip, and a cable connector disposed at the end of the cable away from the sensor chip.

[0007] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, wherein: the scale line width of the multiple sets of puncture needles is 10mm, the spacing between each scale is 10mm, and the distance between the first puncture needle scale line and the cutting edge of the puncture needle is 10mm.

[0008] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, wherein: the upper tray is located above the lower tray, a needle collector groove is provided on one side of the top of the upper tray, and three sets of disinfection brush placement grooves are provided on the side of the top of the upper tray away from the needle collector groove.

[0009] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, wherein: a sensor groove is provided at one end of the top side of the lower tray, a filter groove is provided at the other end of the top of the lower tray near the sensor groove, and a catheter connector groove is provided at the top of the lower tray near the filter groove. The lower tray has an epidural puncture needle groove, a large syringe groove, and a small syringe groove arranged sequentially on the top of the tray near the catheter connector groove. An injection needle groove is arranged on the side of the lower tray away from the filter groove. An anesthesia catheter groove is arranged on the other side of the lower tray near the injection needle groove. A glass syringe groove is arranged on the top of the lower tray near the anesthesia catheter groove. A lumbar puncture needle groove is located on the top of the lower tray away from the epidural puncture needle groove.

[0010] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, wherein: the surface of the puncture needle hub is provided with a protective component, an auxiliary positioning component is provided at one end of the protective component, and a limiting component is provided on the auxiliary positioning component.

[0011] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, the protective component includes a protective housing disposed on the surface of the puncture needle seat, an operating port disposed on the top and one side of the protective housing, and a grip handle disposed on the bottom side of the protective housing.

[0012] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, the auxiliary positioning component includes an operating side chamber disposed at one end of the protective housing, a sliding cavity disposed within the operating side chamber with one end of the sliding cavity communicating with the outside of the operating side chamber, a sliding cross plate disposed within the sliding cavity with one end of the sliding cross plate extending to the outside of the operating side chamber, a connecting plate disposed at one end of the sliding cross plate located outside the operating side chamber, an abutment block disposed at one end of the connecting plate, and a communicating hole disposed on one side of the abutment block, with the communicating hole penetrating the abutment block, and the puncture needle penetrating the abutment block through the communicating hole.

[0013] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, the auxiliary positioning component further includes a viewing window disposed at the end of the operating side chamber away from the protective shell, and the viewing window and the inner cavity of the sliding cavity are interconnected, as well as a scale line disposed at the end of the sliding plate near the viewing window.

[0014] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, wherein: the limiting component includes an installation cavity disposed at the top and bottom of the operating side chamber, a communicating slot disposed at the top and bottom of the sliding cavity, and the communicating slot and the installation cavity are interconnected, a T-shaped block disposed at one of the top and bottom ends of the sliding cross plate, and the end of the T-shaped block away from the sliding cross plate is provided with three sets of semi-arc grooves, and one end of the T-shaped block extends into the installation cavity through the communicating slot; Multiple sets of limiting chambers are provided at the top of the mounting cavity, and the multiple sets of limiting chambers in the two sets of mounting cavities are arranged in a mirror symmetrical manner. A positioning rod is provided at the top of the limiting chamber, a sleeve rod is provided on the surface of the positioning rod, and one end of the sleeve rod extends to the outside of the limiting chamber, a hemispherical abutment block is provided at the end of the sleeve rod located outside the limiting chamber, and the hemispherical abutment block extends into the semi-arc groove cavity, a blocking collar is provided on the surface of the sleeve rod and the blocking collar is located in the limiting chamber cavity, and a spring is provided on the surface of the sleeve rod and the positioning rod.

[0015] As a preferred embodiment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention, wherein: the top and bottom of the operating side chamber have threaded rods near the connecting plate, and one end of the threaded rod extends into the installation cavity; a rubber abutment block is provided at the end of the threaded rod located inside the installation cavity; and a rotating handle is provided at the end of the threaded rod located outside the operating side chamber.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This invention features an upper and lower tray on the housing. The upper tray has three slots for placing disinfection brushes and a needle collector. The central blank area is used to place medical cleaning items such as gauze pads, adhesive tape, cotton balls, gloves, and drapes. The lower tray is designed with slots for sensors, filters, catheter connectors, epidural needles, large syringes, small syringes, injection needles, glass syringes, lumbar puncture needles, and anesthesia catheters. This allows for the categorization and placement of various instruments, facilitating quick access during use and avoiding confusion. Furthermore, the overall consumables are packaged together, making operation more convenient and suitable for clinical application.

[0017] 2. This invention combines real-time ultrasound visualization guidance with puncture needle tip pressure monitoring, allowing doctors to adjust the needle insertion path under ultrasound image guidance. At the same time, the pressure waveform changes quantify whether the needle tip has entered the epidural space (the pressure value is stable within ±20 mmHg and a specific waveform appears), achieving dual safety assurance of "image guidance + pressure confirmation" and thus providing positioning accuracy.

[0018] 3. This invention effectively avoids complications such as dural perforation, vascular injury, and nerve damage caused by blind puncture by accurately determining the needle tip position, significantly improving the safety of anesthesia. Moreover, ultrasound guidance can clearly display anatomical structures such as ligaments and dura mater, which can significantly improve the success rate of puncture for patients who are obese, have spinal deformities, or are elderly, as traditionally difficult to puncture, thus expanding the scope of application of epidural anesthesia. At the same time, the puncture pressure sensor continuously monitors and displays the pressure change curve during the puncture process, providing objective and quantitative judgment basis, reducing the dependence on the operator's subjective experience, and shortening the learning curve.

[0019] 4. By setting up a limiting component, the present invention moves the needle to a designated position on the surface of the puncture needle via the abutment block on the T-block. When the needle tip breaks through the ligamentum flavum and enters the epidural space during the puncture operation, it will encounter a sudden disappearance of large resistance. At this time, the movement friction of the T-block is increased due to the obstruction of the abutment block. This ensures that the puncture needle does not advance too far when the large resistance suddenly disappears, so that the puncture force remains relatively consistent, thereby greatly improving the success rate of puncture. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the housing of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention; Figure 2 This is a three-dimensional structural diagram of the upper tray and the upper tray of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention. Figure 3 This is a three-dimensional structural diagram of the puncture component of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention; Figure 4 This is a three-dimensional structural diagram of the puncture needle for the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention; Figure 5 This is a schematic diagram of the main structure of the puncture needle for the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention; Figure 6 This invention relates to an ultrasound-guided pressure monitoring device for epidural anesthesia positioning. Figure 5 A magnified structural diagram at point A; Figure 7 This is a three-dimensional structural schematic diagram of the protective component of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention; Figure 8 This is a three-dimensional structural schematic diagram of the protective component of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention from another perspective. Figure 9 This is a three-dimensional structural schematic diagram of the auxiliary positioning component of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention; Figure 10 This is a three-dimensional structural diagram of the sliding cross plate of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention. Figure 11 This is a cross-sectional three-dimensional structural diagram of the operating side compartment of the ultrasound-guided pressure monitoring epidural anesthesia positioning device of the present invention. Figure 12 This invention relates to an ultrasound-guided pressure monitoring device for epidural anesthesia positioning. Figure 11 A magnified structural diagram at point B.

[0021] Explanation of reference numerals in the attached figures: 1. Component placement; 11. Housing placement; 12. Dialysis paper; 13. Upper tray; 14. Needle collector slot; 15. Disinfectant brush placement slot; 16. Lower tray; 17. Sensor slot; 18. Filter slot; 19. Catheter connector slot; 110. Epidural puncture needle slot; 111. Large syringe slot; 112. Small syringe slot; 113. Injection needle slot; 114. Anesthesia catheter slot; 115. Glass syringe slot; 116. Lumbar puncture needle slot; 2. Puncture components; 21. Ultrasonic-guided epidural puncture needle assembly; 211. Puncture needle hub; 212. Puncture needle; 213. Puncture needle graduation lines; 214. Blade imaging pattern; 215. Puncture needle blade edge; 22. Puncture sensor assembly; 221. Connector; 222. Transmission conduit; 223. Sensor chip; 224. Cable; 225. Cable connector; 23. Protective components; 231. Protective housing; 232. Operating port; 233. Grip handle; 24. Auxiliary positioning component; 241. Operating side compartment; 242. Sliding cavity; 243. Sliding cross plate; 244. Scale line; 245. Viewing window; 246. Connecting plate; 247. Abutting block; 248. Connecting hole; 25. Limiting component; 251. Mounting cavity; 252. Connecting slot; 253. T-block; 254. Limiting chamber; 255. Positioning rod; 256. Sleeve rod; 257. Blocking collar; 258. Spring; 259. Hemispherical abutment block; 250. Semi-arc groove; 2501. Threaded rod; 2502. Rubber abutment block; 2503. Rotating handle. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Example 1 Reference Figures 1-6 This is the first embodiment of the present invention, which provides a device for positioning epidural anesthesia with ultrasound-guided pressure monitoring. This device includes: Placement component 1 includes a placement housing 11, dialysis paper 12 disposed on the surface of the placement housing 11, and an upper tray 13 and a lower tray 16 disposed inside the placement housing 11; The puncture component 2 includes an ultrasound-guided epidural puncture needle assembly 21 and a puncture sensor assembly 22. The ultrasound-guided epidural puncture needle assembly 21 includes a puncture needle seat 211, a puncture needle 212 disposed on one side of the puncture needle seat 211, a puncture needle blade 215 disposed at the end of the puncture needle 212 away from the puncture needle seat 211, and a miniature probe disposed inside the puncture needle seat 211 and extending directly to the puncture needle blade 215. Multiple sets of puncture needle scale lines 213 disposed on the surface of the puncture needle 212 are used to indicate the puncture depth, and a blade imaging texture 214 disposed on the surface of the puncture needle 212 near the puncture needle blade 215. The blade imaging texture 214 is 5-10 mm long and can enhance the imaging effect under ultrasound. The puncture sensor assembly 22 includes a sensor chip 223, a transmission conduit 222 disposed at one end of the sensor chip 223 and connected to a connector 221 at one end of the transmission conduit 222, and the puncture needle seat 211 is connected to the connector 221, a cable 224 disposed at the other end of the sensor chip 223, and a cable connector 225 disposed at the end of the cable 224 away from the sensor chip 223. The connector 221 is used to fix the puncture needle hub 211 and the transmission tube 222 to realize the transmission path. The transmission tube 222, connector 221 and sensor chip 223 realize signal input. The sensor chip 223 is used to analyze and convert signals. The cable 224 is used to connect the sensor chip 223 and the cable connector 225 to realize signal output. The cable connector 225 is used to connect to the hospital monitor to realize signal output conversion. The medical equipment includes one puncture pressure sensor, one ultrasound-guided epidural puncture needle, one lumbar puncture needle, one anesthesia catheter, three disinfection brushes, two drug filters, one anesthesia catheter connector, one 20ml syringe, one 3ml syringe, one 5ml glass syringe, four injection needles, one needle collector, four gauze pads, two adhesive patches, two cotton balls, one pair of gloves, and one fenestrated drape. The gauze pads, adhesive patches, cotton balls, gloves, and fenestrated drape are placed in the central blank area at the top of the upper tray 13.

[0024] The multiple sets of puncture needle scale lines 213 have a scale line width of 10mm and a scale interval of 10mm. The first puncture needle scale line 213 is 10mm away from the end of the puncture needle blade 215.

[0025] The upper tray 13 is located above the lower tray 16. A needle collector groove 14 is provided on one side of the top of the upper tray 13. Three sets of disinfection brush placement grooves 15 are provided on the side of the top of the upper tray 13 away from the needle collector groove 14.

[0026] A sensor groove 17 is provided at one end of the top side of the lower tray 16, a filter groove 18 is provided at the other end of the top of the lower tray 16 near the sensor groove 17, and a conduit connector groove 19 is provided at the top of the lower tray 16 near the filter groove 18. The lower tray 16 has an epidural puncture needle groove 110, a large syringe groove 111, and a small syringe groove 112 arranged sequentially on the top of the lower tray 16 near the catheter connector groove 19. The lower tray 16 has an injection needle groove 113 on the top of the lower tray 16 away from the filter groove 18. The lower tray 16 has an anesthesia catheter groove 114 on the other side of the top of the lower tray 16 near the injection needle groove 113. The lower tray 16 has a glass syringe groove 115 on the top of the lower tray 16 and near the anesthesia catheter groove 114. The lower tray 16 has a lumbar puncture needle groove 116 on the top of the lower tray 16 away from the epidural puncture needle groove 110.

[0027] The surface of the puncture needle hub 211 is provided with a protective component 23, an auxiliary positioning component 24 disposed at one end of the protective component 23, and a limiting component 25 disposed on the auxiliary positioning component 24.

[0028] The integrated sensor and ultrasound-guided epidural puncture needle 212 has a hollow needle body. The puncture needle blade 215 is designed to conform to the standard of traditional anesthesia puncture needles. The needle hub 211 is equipped with a miniature sensing probe and connected to the puncture pressure sensor. The puncture needle 212 body adopts a high echo design, and the needle body surface is provided with micro-grooves or coatings to enhance the clarity of ultrasound imaging. The sensor chip 223 can continuously monitor and display the pressure change curve during the puncture process, which helps to determine whether the needle tip has entered the epidural space. 1. Ultrasound guidance: Doctors use an ultrasound probe to scan the intervertebral space, clearly displaying structures such as ligaments and dura mater, and determine the puncture point and needle insertion angle.

[0029] 2. Pressure monitoring: During the insertion of the epidural puncture needle 212, the miniature probe at the tip of the needle cavity is connected to the sensor chip 223 through the transmission tube 222 to transmit pressure data in real time. When the needle tip breaks through the ligamentum flavum and enters the epidural cavity, the pressure waveform shows a characteristic change, such as a straight line reversal followed by a specific waveform, and the pressure value stabilizes within the range of ±20 mmHg, confirming the position of the needle tip.

[0030] 3. Collaborative operation: Ultrasound images and pressure data are displayed simultaneously, allowing doctors to adjust the needle insertion path based on the images and accurately determine the needle tip position by combining pressure feedback, thus reducing operational risks.

[0031] Example 2 Reference Figures 1-12 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the protective component 23 includes a protective housing 231 disposed on the surface of the puncture needle holder 211, an operation port 232 disposed on the top and one side of the protective housing 231 to facilitate operation of the puncture needle holder 211 by connecting the operation port 232 to the operation, and a grip handle 233 disposed on the bottom side of the protective housing 231 to facilitate gripping and use.

[0032] The auxiliary positioning component 24 includes an operating side compartment 241 disposed at one end of the protective housing 231, a sliding cavity 242 disposed within the operating side compartment 241, one end of the sliding cavity 242 communicating with the outside of the operating side compartment 241, a sliding cross plate 243 disposed within the sliding cavity 242, one end of the sliding cross plate 243 extending to the outside of the operating side compartment 241, a connecting plate 246 disposed at the end of the sliding cross plate 243 located outside the operating side compartment 241, an abutment block 247 disposed at one end of the connecting plate 246, and a connecting hole 248 disposed on one side of the abutment block 247, the connecting hole 248 penetrating the abutment block 247, and a puncture needle 212 penetrating the abutment block 247 through the connecting hole 248. The connecting hole 248 facilitates the puncture needle 212 to pass through the abutment block 247, avoiding interference with the use of the puncture needle 212.

[0033] The auxiliary positioning component 24 also includes a viewing window 245 disposed at the end of the operating side compartment 241 away from the protective housing 231, and the viewing window 245 and the inner cavity of the sliding cavity 242 are interconnected, as well as a scale line 244 disposed at the end of the sliding plate 243 near the viewing window 245. The viewing window 245 facilitates observation of the scale line 244 on the sliding plate 243.

[0034] The limiting component 25 includes mounting cavities 251 located at the top and bottom of the operating side compartment 241, communicating slots 252 located at the top and bottom of the inner cavity of the sliding cavity 242, and communicating slots 252 and mounting cavities 251 communicating with each other, and T-shaped blocks 253 located at the top and bottom of the sliding cross plate 243, with three sets of semi-arc grooves 250 opened at the end of the T-shaped block 253 away from the sliding cross plate 243, and one end of the T-shaped block 253 extending into the inner cavity of the mounting cavity 251 through the communicating slots 252; Multiple sets of limiting chambers 254 are provided at the top of the inner cavity of the mounting cavity 251. The multiple sets of limiting chambers 254 in the two sets of mounting cavities 251 are arranged in a mirror symmetrical manner. A positioning rod 255 is provided at the top of the inner cavity of the limiting chamber 254. A sleeve rod 256 is provided on the surface of the positioning rod 255, and one end of the sleeve rod 256 extends to the outside of the limiting chamber 254. A hemispherical abutment block 259 is provided at the end of the sleeve rod 256 located outside the limiting chamber 254, and the hemispherical abutment block 259 extends into the inner cavity of the semi-arc groove 250. A blocking collar 257 is provided on the surface of the sleeve rod 256 and is located in the inner cavity of the limiting chamber 254. A spring 258 is provided on the surface of the sleeve rod 256 and the positioning rod 255.

[0035] During use, when the doctor scans the intervertebral space with an ultrasound probe, clearly displaying structures such as ligaments and dura mater, and determining the puncture point and needle insertion angle, the connecting plate 246 can be pulled, causing the sliding plate 243 to move within the sliding cavity 242, simultaneously passing through the scale line 244 on the viewing window 245. This will then cause the two sets of T-shaped blocks 253 on the sliding plate 243 to slide within the installation cavity 251. After the abutment block 247 is moved to the designated position on the surface of the puncture needle 212, the puncture operation is performed normally. When the tip of the puncture needle 212 breaks through the ligamentum flavum and enters the epidural space, it will encounter a sudden disappearance of strong resistance. At this time, due to the insertion of the puncture needle 212, the abutment block 247 will abut against the needle. On the patient's skin surface, when the tip of the puncture needle 212 breaks through the ligamentum flavum and enters the epidural space, as it continues to advance, the contact block 247 can be pushed backward due to the contact, which in turn drives the sliding plate 243 to move within the sliding cavity 242. Then, the T-shaped block 253 on the connecting slot 252 moves between multiple sets of hemispherical contact blocks 259 within the mounting cavity 251. The elastic force of the spring 258 pushes the hemispherical contact block 259, which increases the moving friction between it and the T-shaped block 253. This ensures that the puncture needle 212 does not advance too far when encountering a sudden disappearance of large resistance, so that the puncture force remains relatively consistent, thereby greatly improving the success rate of puncture.

[0036] The remaining structure is the same as that in Example 1.

[0037] Example 3 Reference Figures 1-12 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: threaded rods 2501 are located at the top and bottom of the operating side compartment 241 near the end of the connecting plate 246, and one end of the threaded rod 2501 extends into the mounting cavity 251. A rubber abutment block 2502 is provided at the end of the threaded rod 2501 located inside the mounting cavity 251. The rubber abutment block 2502 can increase the friction with the surface of the sliding cross plate 243. A rotating handle 2503 is provided at the end of the threaded rod 2501 located outside the operating side compartment 241 to facilitate the operation of rotating the threaded rod 2501.

[0038] During use, when there is a strict limit to the puncture depth of the puncture needle 212, simply refer to the scale line 244 on the viewing window 245 and move the sliding plate 243 to the designated position so that the abutment block 247 also moves to the designated position on the surface of the puncture needle 212 for limiting. Then, turn the two sets of rotating handles 2503 to drive the threaded rod 2501 to rotate, so that the rubber abutment block 2502 passes through the connecting slot 252 and then abuts against the surface of the sliding plate 243, thereby limiting the sliding plate 243 and the abutment block 247. Then, the puncture operation can be performed through the puncture needle 212.

[0039] The remaining structure is the same as that in Example 2.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for positioning epidural anesthesia with ultrasound-guided pressure monitoring, characterized in that, include: Placement component (1), the placement component (1) includes a placement housing (11), dialysis paper (12) disposed on the surface of the placement housing (11), and an upper tray (13) and a lower tray (16) disposed inside the placement housing (11). The puncture component (2) includes an ultrasonically positioned epidural puncture needle assembly (21) and a puncture sensor assembly (22). The ultrasonically positioned epidural puncture needle assembly (21) includes a puncture needle seat (211), a puncture needle (212) disposed on one side of the puncture needle seat (211), a puncture needle blade (215) disposed at one end of the puncture needle (212) away from the puncture needle seat (211), and a miniature probe disposed inside the puncture needle seat (211) and extending directly to the puncture needle blade (215), multiple sets of puncture needle scale lines (213) disposed on the surface of the puncture needle (212), and blade imaging patterns (214) disposed on the surface of the puncture needle (212) near the puncture needle blade (215). The puncture sensor assembly (22) includes a sensor chip (223), a transmission conduit (222) disposed at one end of the sensor chip (223), and a connector (221) connected to one end of the transmission conduit (222), and the puncture needle seat (211) is connected to the connector (221), a cable (224) disposed at the other end of the sensor chip (223), and a cable connector (225) disposed at the end of the cable (224) away from the sensor chip (223).

2. The device for positioning epidural anesthesia with ultrasound-guided pressure monitoring according to claim 1, characterized in that: The graduation line (213) of the multiple sets of puncture needles is 10mm wide, and the distance between each graduation is 10mm. The first puncture needle graduation line (213) is 10mm away from the end of the puncture needle blade (215).

3. The device for positioning epidural anesthesia with ultrasound-guided pressure monitoring according to claim 2, characterized in that: The upper tray (13) is located above the lower tray (16). A needle collector groove (14) is provided on one side of the top of the upper tray (13). Three sets of disinfection brush placement grooves (15) are provided on the side of the top of the upper tray (13) away from the needle collector groove (14).

4. The ultrasound-guided pressure monitoring epidural anesthesia positioning device according to claim 3, characterized in that: A sensor groove (17) is provided at one end of the top side of the lower tray (16), a filter groove (18) is provided at the other end of the top of the lower tray (16) near the sensor groove (17), and a conduit connector groove (19) is provided at the top of the lower tray (16) near the filter groove (18). The lower tray (16) has an epidural puncture needle groove (110), a large syringe groove (111), and a small syringe groove (112) arranged sequentially on the top of the lower tray (16) near the catheter connector groove (19). The side of the lower tray (16) away from the filter groove (18) has an injection needle groove (113). The other side of the lower tray (16) near the injection needle groove (113) has an anesthesia catheter groove (114). The side of the lower tray (16) near the anesthesia catheter groove (114) has a glass syringe groove (115). The lumbar puncture needle groove (116) is located on the top of the lower tray (16) away from the epidural puncture needle groove (110).

5. The device for positioning epidural anesthesia with ultrasound-guided pressure monitoring according to claim 1, characterized in that: The surface of the puncture needle hub (211) is provided with a protective component (23), an auxiliary positioning component (24) disposed at one end of the protective component (23), and a limiting component (25) disposed on the auxiliary positioning component (24).

6. The ultrasound-guided pressure monitoring epidural anesthesia positioning device according to claim 5, characterized in that: The protective component (23) includes a protective housing (231) disposed on the surface of the puncture needle hub (211), an operating port (232) disposed on the top and one side of the protective housing (231), and a grip handle (233) disposed on the bottom side of the protective housing (231).

7. The ultrasound-guided pressure monitoring epidural anesthesia positioning device according to claim 6, characterized in that: The auxiliary positioning component (24) includes an operation side compartment (241) disposed at one end of the protective housing (231), a sliding cavity (242) disposed in the inner cavity of the operation side compartment (241), and one end of the sliding cavity (242) communicating with the outside of the operation side compartment (241), a sliding cross plate (243) disposed in the inner cavity of the sliding cavity (242), and one end of the sliding cross plate (243) extending to the outside of the operation side compartment (241), a connecting plate (246) disposed at one end of the sliding cross plate (243) located outside the operation side compartment (241), an abutment block (247) disposed at one end of the connecting plate (246), and a connecting hole (248) disposed on one side of the abutment block (247), and the connecting hole (248) penetrating the abutment block (247), and the puncture needle (212) penetrating the abutment block (247) through the connecting hole (248).

8. The ultrasound-guided pressure monitoring epidural anesthesia positioning device according to claim 7, characterized in that: The auxiliary positioning component (24) further includes a viewing window (245) disposed at the end of the operation side compartment (241) away from the protective housing (231), and the viewing window (245) and the inner cavity of the sliding cavity (242) are interconnected, as well as a scale line (244) disposed at the end of the sliding plate (243) near the viewing window (245).

9. The device for positioning epidural anesthesia with ultrasound-guided pressure monitoring according to claim 8, characterized in that: The limiting component (25) includes mounting cavities (251) located at the top and bottom of the operating side compartment (241), communicating slots (252) located at the top and bottom of the inner cavity of the sliding cavity (242), and communicating slots (252) and mounting cavities (251) communicating with each other, and T-shaped blocks (253) located at the top and bottom of the sliding cross plate (243), and three sets of semi-arc grooves (250) are provided at the end of the T-shaped block (253) away from the sliding cross plate (243), and one end of the T-shaped block (253) extends into the inner cavity of the mounting cavity (251) through the communicating slots (252); Multiple sets of limiting chambers (254) are provided at the top of the inner cavity of the mounting cavity (251). The multiple sets of limiting chambers (254) in the two sets of inner cavities of the mounting cavity (251) are arranged in a mirror symmetrical manner. A positioning rod (255) is provided at the top of the inner cavity of the limiting chamber (254). A sleeve rod (256) is provided on the surface of the positioning rod (255), and one end of the sleeve rod (256) extends to the outside of the limiting chamber (254). A hemispherical abutment block (259) is provided at the end of the sleeve rod (256) located outside the limiting chamber (254), and the hemispherical abutment block (259) extends to the inner cavity of the semi-arc groove (250). A blocking collar (257) is provided on the surface of the sleeve rod (256), and the blocking collar (257) is located in the inner cavity of the limiting chamber (254). A spring (258) is provided on the surface of the sleeve rod (256) and the positioning rod (255).

10. The device for positioning epidural anesthesia with ultrasound-guided pressure monitoring according to claim 8, characterized in that: The operating side compartment (241) has a threaded rod (2501) at the top and bottom near the end of the connecting plate (246), and one end of the threaded rod (2501) extends into the mounting cavity (251). A rubber abutment block (2502) is provided at the end of the threaded rod (2501) located inside the mounting cavity (251), and a rotating handle (2503) is provided at the end of the threaded rod (2501) located outside the operating side compartment (241).

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