An epidural anesthesia puncture device for use in a pain clinic

Abstract

This invention discloses an epidural anesthesia puncture device for use in pain management departments, relating to the field of epidural anesthesia puncture technology. It includes a puncture needle feeding mechanism, a puncture needle, a feed column anti-reverse assembly, and a puncture stop mechanism. The puncture needle feeding mechanism comprises a frame and a hexagonal hollow feed column. A first sliding sleeve is located on the left side of the frame, and a second sliding sleeve is located on the right side. The hexagonal hollow feed column is laterally slidably connected to the first and second sliding sleeves. The lower right end of the frame is connected to the top of a fixing handle via a mounting plate. A protrusion is connected to the top of the fixing handle. A feed control assembly is installed in the lower right corner of the frame. This epidural anesthesia puncture device for pain management departments employs multiple short-distance punctures, avoiding the risk of excessive puncture due to the inertia of manual puncture by the anesthesiologist. Once the puncture is in place, the hexagonal hollow feed column can be quickly locked, stopping the puncture needle's movement and preventing excessive puncture damage to the dura mater, thus ensuring high safety.

Description

Technical Field

[0001] This invention relates to the field of epidural anesthesia puncture technology, specifically to an epidural anesthesia puncture device for use in pain management departments. Background Technology

[0002] Epidural anesthesia refers to epidural space block anesthesia, which involves injecting anesthetic into the epidural space to block the spinal nerve roots and temporarily paralyze the area they innervate. During epidural puncture, whether the puncture is in place depends entirely on the anesthesiologist's experience. The anesthesiologist usually judges whether the puncture is in place by the feeling of loss during puncture. Since the epidural space is under slightly negative pressure, the pressure inside the puncture needle is also used to verify whether the puncture is in place. Because anesthesiologists' touch and reaction speed vary, when they feel they have reached the epidural space, the puncture may still proceed due to inertia, which can easily puncture the dura mater and cause serious consequences. Current technology uses an epidural puncture needle that moves the needle core for puncture. After the puncture is completed, the needle core retracts into the epidural puncture needle. However, due to the inertia of the puncture action, the epidural puncture needle itself still has the risk of continuing to insert, which can easily damage the dura mater. Summary of the Invention

[0003] The technical problem to be solved by this invention is to overcome the shortcomings of existing devices and provide an epidural anesthesia puncture device for use in pain management departments. This device uses a reciprocating feed lever to control the insertion of the puncture needle, resulting in a small puncture depth each time. By using multiple short-distance punctures, the risk of excessive puncture caused by the inertia of manual puncture by the anesthesiologist is avoided. Once the puncture is in place, the hexagonal hollow feed column can be quickly locked to stop the puncture needle movement, thus avoiding excessive puncture and damage to the dura mater. This device is highly safe and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an epidural anesthesia puncture device for use in pain management departments, comprising: The puncture needle feeding mechanism includes a frame, a hexagonal hollow feeding column, and a feeding control assembly. A sliding sleeve one is provided on the left side of the frame, and a sliding sleeve two is provided on the right side of the frame. The hexagonal hollow feeding column is laterally slidably connected to sliding sleeve one and sliding sleeve two. The lower right end of the frame is connected to the top of the fixing handle through a mounting plate. A protrusion is connected to the top of the fixing handle. The feeding control assembly is installed in the lower right corner of the frame. The puncture needle is detachably mounted on the left end of the hexagonal hollow feed column; The feed column check valve assembly is installed on the upper right side of the frame; The puncture stop mechanism is installed at the lower right end of the frame.

[0005] The frame, mounting plate, and fixing handle constitute a gun-type operating support. The fixing handle facilitates the handling of the gun-type operating support. Sliding sleeves one and two guide and limit the movement direction of the hexagonal hollow feed column. The feed control component drives the hexagonal hollow feed column to move to the left multiple times in short distances relative to the frame, thereby driving the puncture needle at the left end of the hexagonal hollow feed column to pierce the corresponding position on the patient's body. The feed column anti-reverse component prevents the puncture needle and the hexagonal hollow feed column from moving to the right during the puncture interval. When the puncture is in place, the puncture stop mechanism locks the hexagonal hollow feed column with the help of the feed column anti-reverse component. At this time, the anesthesiologist can no longer operate the feed control component, and the feed column anti-reverse component and the puncture needle can no longer move to the left to pierce the patient's body, thus improving the safety of the puncture.

[0006] Furthermore, the feed control assembly includes a return spring, a feed plate, a return stop, a feed handle, a mounting shaft, and a movable shaft. The hexagonal hollow feed column has a return spring fitted onto the column segment located between sliding sleeve one and sliding sleeve two. The column segment of the hexagonal hollow feed column located between the return spring and sliding sleeve two passes through the hexagonal hole on the feed plate. The lower right corner of the frame is movably connected to the top of the feed handle via the mounting shaft. The top of the feed handle is movably connected to the bottom of the feed plate via the movable shaft. A return stop is provided at the upper right corner of the frame. The elastic force of the return spring pushes the upper right side of the feed plate to press against the left side of the return stop, keeping the feed plate vertical and simultaneously tilting the bottom of the feed handle to the left. The size of the hexagonal hole on the feed plate is larger than the vertical cross-section of the hexagonal hollow feed column.

[0007] The anesthesiologist holds the fixed handle, with the web of their hand positioned at the connection between the fixed handle and the boss. The four fingers (excluding the thumb) grip the left side of the feed handle, and the anesthesiologist pulls the feed handle towards the fixed handle. At this point, the bottom of the feed handle moves to the right, while the top moves to the left. The top of the feed handle, through the movable shaft, pulls the bottom of the feed plate to the left. Because the top of the feed plate is still under the thrust of the return spring, the bottom of the feed plate tilts to the left. The upper and lower ends of the hexagonal hole of the feed plate generate significant friction with the upper and lower sides of the hexagonal hollow feed post, pushing the hexagonal hollow feed post to move slightly to the left. During this process, the return spring is compressed. When the feed lever is released, the return spring extends and pushes the feed plate to the right relative to the hexagonal hollow feed post until the upper right side of the feed plate is pressed against the left side of the return stop. At this time, the bottom of the feed lever moves back to the left to reset. By repeatedly squeezing and releasing the feed lever, the hexagonal hollow feed post and the puncture needle can move to the left several times in short distances, allowing the puncture needle to penetrate the epidural space. After penetration, the puncture needle and the hexagonal hollow feed post are separated, and the gun-type operating bracket is removed. Anesthetic can then be injected into the epidural space through the puncture needle.

[0008] Furthermore, the feed column anti-reverse assembly includes a protruding rod, an anti-reverse plate, a pressing plate, and an anti-reverse spring. The upper right side of the frame is fixedly connected to the left end of the protruding rod, the right end of the protruding rod is movably connected to the top of the anti-reverse plate, and the bottom of the anti-reverse plate is connected to the pressing plate. The hexagonal hollow feed column passes through the hexagonal hole on the anti-reverse plate, and the segment of the hexagonal hollow feed column located between the sliding sleeve and the anti-reverse plate is fitted with an anti-reverse spring, which is in a compressed state. The size of the hexagonal hole on the anti-reverse plate is larger than the vertical cross-section of the hexagonal hollow feed post. The thrust of the anti-reverse spring causes the bottom of the anti-reverse plate to tilt to the right. The friction between the upper and lower sides of the hexagonal hole on the anti-reverse plate and the upper and lower sides of the hexagonal hollow feed post prevents the hexagonal hollow feed post from moving to the right relative to the frame. When the anesthesiologist pulls the feed lever towards the fixed lever, the friction between the feed plate and the hexagonal hollow feed post pushes the hexagonal hollow feed post to the left. The friction between the hexagonal hollow feed post and the anti-reverse plate causes the bottom of the anti-reverse plate to move to the left, gradually bringing the anti-reverse plate closer to a vertical state. The friction between the upper and lower sides of the hexagonal hole on the anti-reverse plate and the upper and lower sides of the hexagonal hollow feed post will... As the feed column gradually shrinks, it can move smoothly to the left. During this process, the check spring is compressed. When the feed lever is released, the return spring extends and pushes the feed plate to move to the right relative to the hexagonal hollow feed column. At this time, the check spring also extends and pushes the bottom of the check plate to move to the right again. This increases the friction between the upper and lower sides of the hexagonal hole on the check plate and the upper and lower sides of the hexagonal hollow feed column. This prevents the hexagonal hollow feed column from moving to the right due to the friction between the feed plate and the hexagonal hollow feed column when the return spring extends and drives the feed plate to move to the right relative to the hexagonal hollow feed column. This achieves the check spring function for the hexagonal hollow feed column.

[0009] Once the puncture is complete, separate the hexagonal hollow feed post from the puncture needle. At this point, press the bottom of the check plate to the left using the pressing plate. This will compress the reset spring and keep the check plate in a vertical position. The friction between the check plate and the hexagonal hollow feed post will disappear, allowing the hexagonal hollow feed post to be easily pulled to the right relative to the frame, thus completing the reset of the hexagonal hollow feed post after use.

[0010] Furthermore, the puncture stop mechanism includes a motor, a stop cam, and a puncture completion detection component. The motor is installed at the lower right end of the frame, and the stop cam is fixedly connected to the output shaft at the front of the motor. The puncture completion detection component is connected to the right end of the hexagonal hollow feed column. The motor is a servo motor, and when the motor is not working, the protruding part of the stop cam faces directly upward.

[0011] Furthermore, the puncture detection component includes an end sleeve, a pressure sensor, a cable, and a controller. The right end of the hexagonal hollow feed column is provided with an end sleeve, on which a pressure sensor is installed. One end of the pressure sensor is connected to the cable, and the other end of the cable is connected to the controller. The controller is mounted on a boss, and the output end of the controller is electrically connected to the input end of the motor.

[0012] The pressure sensor is used to detect the pressure inside the hexagonal hollow feed column. When the puncture needle is inserted into the epidural space, the pressure sensor can detect the negative pressure inside the hexagonal hollow feed column because there is negative pressure inside the epidural space and the hexagonal hollow feed column is connected to the puncture needle. At this time, the pressure sensor transmits the negative pressure electrical signal to the controller. The controller controls the motor to rotate clockwise, and the motor drives the stop cam to rotate clockwise until the protruding part of the stop cam abuts against the bottom left side of the anti-reverse plate, causing the bottom of the anti-reverse plate to tilt to the right. The friction between the anti-reverse plate and the hexagonal hollow feed column increases, which can counteract the leftward friction of the feed plate on the hexagonal hollow feed column when it moves to the left. Even if the feed handle is gripped tightly, it is difficult to move the hexagonal hollow feed column to the left. The hexagonal hollow feed column can be locked immediately after the puncture needle is inserted into the space, thus completing the puncture needle stopping operation.

[0013] Furthermore, the puncture stopping mechanism also includes a hexagonal sliding sleeve and a cable ring. Multiple hexagonal sliding sleeves are slidably fitted onto the right end of the hexagonal hollow feed column. Each hexagonal sliding sleeve has a cable ring at its bottom, through which the cable passes. The hexagonal sliding sleeve and cable ring work together to bring the cable close to the hexagonal hollow feed column, serving to manage the cable and prevent it from drooping and interfering with the anesthesiologist's grip on the device. When the hexagonal hollow feed column moves left and right, the hexagonal sliding sleeve can also move freely along it, ensuring that the hexagonal sliding sleeve and cable do not interfere with the movement of the hexagonal hollow feed column.

[0014] Furthermore, it also includes a control assembly for the clamping amplitude of the movable handle. This assembly includes a control nut, a control stud, a knob, and a stop plate. The control nut is located on the rear side of the boss, and the control nut is internally threaded to a transverse control stud. A knob is located at the right end of the control stud. A stop plate is located on the rear side of the movable feed handle, to the left of the control stud. Each time the movable feed handle is moved towards the fixed handle, the puncture needle is inserted. The single puncture depth is maximized when the movable feed handle is gripped tightly against the fixed handle. If the anesthesiologist is not proficient, for a more conservative approach, the control stud can be rotated by turning the knob to bring it closer to the stop plate. In this case, the movable feed handle can no longer be completely gripped against the fixed handle, reducing the single puncture depth and increasing safety.

[0015] Furthermore, it also includes a needle insertion angle control mechanism, which comprises a rotating shaft, a rotating sleeve, supporting legs, an angle locking component, and an angle indicating component. Longitudinal rotating shafts are fixedly connected to the front and rear sides of the sliding sleeve. Two rotating sleeves are rotatably connected to the ends of the two rotating shafts away from the sliding sleeve. The right ends of two supporting legs are fixedly connected to the left sides of the two rotating sleeves. A needle insertion direction control mechanism is connected to the left ends of the two supporting legs. The front rotating shaft is connected to the right end of the front supporting leg via the angle locking component, and the angle indicating component is connected to the end of the rotating shaft away from the sliding sleeve. The needle insertion direction control mechanism is close to the patient's body at the puncture site, providing support for the supporting legs in the needle insertion angle control mechanism. The rotating shaft rotates relative to the rotating sleeve, changing the angle between the puncture needle and the puncture position. The angle indicating component indicates the tilt angle of the puncture needle relative to the puncture position. Then, the angle locking component locks the front rotating shaft and the front supporting leg, thus locking the tilt angle of the puncture needle relative to the puncture position. After locking, the puncture needle can be stably inserted into the patient's body at a specific tilt angle.

[0016] Furthermore, the angle indicating component includes a pointer and an angle ruler. The pointer is installed at the end of the rotating shaft away from the sliding sleeve, and the angle ruler is provided on the side of the rotating sleeve away from the sliding sleeve. As the pointer rotates with the rotating shaft, the angle ruler, in conjunction with the pointer, indicates the tilt angle of the puncture needle relative to the puncture position.

[0017] Furthermore, the needle insertion direction control mechanism includes a rotating ring, a fixed ring, a silicone annular pad, and a needle insertion direction locking assembly. The left ends of the two legs are respectively connected to the front and rear sides of the rotating ring. The left end of the rotating ring is rotatably connected to the fixed ring, and a silicone annular pad is provided on the left side of the fixed ring. The fixed ring is connected to the rotating ring through the needle insertion direction locking assembly. The silicone annular pad contacts the patient's body, increasing friction. Holding the gun-type operating support and keeping the silicone annular pad close to the patient's body can stably maintain the position of the gun-type operating support. The rotating ring rotates relative to the fixed ring, changing the orientation of the tilted puncture needle. Then, the needle insertion direction locking assembly locks the rotating ring and the fixed ring, allowing the puncture needle to be inserted into the patient's body at a specific orientation and tilt angle. When the puncture needle is inserted perpendicular to the patient's body, the rotating ring can rotate relative to the fixed ring, providing the anesthesiologist with better grip comfort.

[0018] Compared with existing technologies, the advantages of using the epidural anesthesia puncture device in our pain management department are: 1. This pain management department uses an epidural anesthesia puncture device. The frame, mounting plate, and fixing handle constitute a gun-type operating support. The fixing handle facilitates the handling of the gun-type operating support. Sliding sleeve one and sliding sleeve two guide and limit the movement direction of the hexagonal hollow feed column. The feed control component is used to drive the hexagonal hollow feed column to move to the left multiple times in short distances relative to the frame, thereby driving the puncture needle at the left end of the hexagonal hollow feed column to puncture the corresponding position on the patient's body. When the puncture is in place, the puncture stop mechanism locks the hexagonal hollow feed column with the help of the feed column anti-reverse component, improving the safety of the puncture.

[0019] 2. This pain management department uses an epidural anesthesia puncture device. A pressure sensor is used to detect the pressure inside the hexagonal hollow feed column. When the puncture needle is inserted into the epidural space, the controller controls the motor to rotate clockwise. The motor drives the stop cam to rotate clockwise until the protruding part of the stop cam abuts against the bottom left side of the anti-reverse plate, causing the bottom of the anti-reverse plate to tilt to the right. The friction between the anti-reverse plate and the hexagonal hollow feed column increases, which can counteract the leftward friction of the feed column when the feed plate moves to the left. Even if the feed handle is gripped tightly, it is difficult to move the hexagonal hollow feed column to the left. The hexagonal hollow feed column can be locked immediately after the puncture needle is inserted, completing the puncture needle stopping work. The stopping speed is fast and the safety is high.

[0020] 3. This pain management department uses an epidural anesthesia puncture device. The reciprocating feed lever is used to control the insertion of the puncture needle. Each puncture is a small depth, and multiple short punctures are used to avoid the risk of excessive puncture caused by the inertia of the anesthesiologist's manual puncture. Once the puncture is in place, the hexagonal hollow feed column can be quickly locked to stop the puncture needle movement and avoid excessive puncture damage to the dura mater. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the epidural anesthesia puncture device used in the pain management department according to the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle; Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at point B in the middle; Figure 4 This is a side view schematic diagram of the epidural anesthesia puncture device used in the pain management department according to the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point C in the middle; Figure 6 This is a schematic diagram of the rear structure of the epidural anesthesia puncture device used in the pain management department according to the present invention. Figure 7This is a partial cross-sectional schematic diagram of the puncture needle, sealing ring, and hexagonal hollow feed column of the epidural anesthesia puncture device used in the pain management department of the present invention. Figure 8 This is a schematic diagram of the finger pressure pad, mounting stud, and nut structure in the epidural anesthesia puncture device for use in the pain management department of the present invention. Figure 9 This is a schematic diagram of the needle insertion direction locking component in the epidural anesthesia puncture device for pain management departments of the present invention. In the diagram: 1. Puncture needle feed mechanism; 11. Frame; 12. Sliding sleeve one; 13. Sliding sleeve two; 14. Hexagonal hollow feed column; 15. Return spring; 16. Feed plate; 17. Return stop; 18. Feed movable handle; 19. Mounting shaft; 110. Movable shaft; 111. Movable seat; 112. Mounting plate; 113. Fixed handle; 114. Boss; 115. Tiger's mouth stop; 116. Acupressure pad plate; 117. Mounting stud; 118. Nut; 2. Feed column anti-reverse assembly; 21. Boss; 22. Movable column; 23. Anti-reverse plate; 24. Pressing plate; 25. Anti-reverse spring; 3. Movable handle clamping amplitude control assembly; 31. Control nut; 32. Control stud; 3. 3. Knob, 34. Support plate, 4. Puncture stop mechanism, 41. End sleeve, 42. Air pressure sensor, 43. Cable, 44. Hexagonal sliding sleeve, 45. Cable ring, 46. Controller, 47. Power supply, 48. Charging port, 49. Motor base, 410. Motor, 411. Stop cam, 5. Needle angle control mechanism, 51. Rotary shaft, 52. Rotary sleeve, 53. Support leg, 54. Locking disc, 55. Annular toothed groove, 56. Square rod, 57. Compression spring, 58. Locking tooth, 59. Pull ring, 510. Pointer, 511. Angle ruler, 6. Needle direction control mechanism, 61. Rotary ring, 62. Fixing ring, 63. Silicone annular pad, 64. Convex tooth, 65. Bracket, 66. Pin, 67. V-shaped bracket, 68. Clamping tooth, 69. Torsion spring, 7. Puncture needle, 8. Sealing ring. Detailed Implementation

[0022] 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.

[0023] Example 1, please refer to Figures 1 to 9 This embodiment provides a technical solution: an epidural anesthesia puncture device for use in pain management departments, including a puncture needle feeding mechanism 1, a puncture needle 7, a feed column anti-reverse assembly 2, and a puncture stop mechanism 4.

[0024] The puncture needle feeding mechanism 1 includes a frame 11, a first sliding sleeve 12, a second sliding sleeve 13, a hexagonal hollow feeding column 14, a mounting plate 112, a fixing handle 113, a boss 114, and a feeding control component. The first sliding sleeve 12 is provided on the left side of the frame 11, and the second sliding sleeve 13 is provided on the right side of the frame 11. The hexagonal hollow feeding column 14 is laterally slidably connected to the first sliding sleeve 12 and the second sliding sleeve 13. The lower right end of the frame 11 is connected to the top of the fixing handle 113 through the mounting plate 112. The top of the fixing handle 113 is integrally formed and connected to the boss 114. The feeding control component is installed in the lower right corner of the frame 11. The feed control assembly includes a return spring 15, a feed plate 16, a return stop 17, a feed lever 18, a mounting shaft 19, a movable shaft 110, and a movable seat 111. A hexagonal hollow feed column 14, located between sliding sleeve 12 and sliding sleeve 2 13, has a section fitted with the return spring 15. This section of the hexagonal hollow feed column 14, located between the return spring 15 and sliding sleeve 2 13, passes through a hexagonal hole on the feed plate 16. A movable seat 111 is located in the lower right corner of the frame 11, and the movable seat 111 is movably connected via the mounting shaft 19. The top of the feed handle 18 is movably connected to the bottom of the feed plate 16 via the movable shaft 110. The movable shaft 110 is located above the mounting shaft 19. A reset stop 17 is provided in the upper right corner of the frame 11. The elastic force of the reset spring 15 pushes the upper right side of the feed plate 16 to press against the left side of the reset stop 17, keeping the feed plate 16 in a vertical state. At the same time, it tilts the bottom of the feed handle 18 to the left. The size of the hexagonal hole on the feed plate 16 is larger than the vertical cross-section of the hexagonal hollow feed column 14.

[0025] The anesthesiologist holds the fixed handle 113, with the web of their hand positioned at the connection between the fixed handle 113 and the protrusion 114. The four fingers (excluding the thumb) grip the left side of the feed handle 18, and forcefully pull the feed handle 18 towards the fixed handle 113. At this time, the bottom of the feed handle 18 moves to the right, while the top moves to the left. The top of the feed handle 18, through the movable shaft 110, pulls the bottom of the feed plate 16 to the left. Because the top of the feed plate 16 is still under the thrust of the return spring 15, the bottom of the feed plate 16 tilts to the left. The upper and lower ends of the hexagonal hole of the feed plate 16 generate significant friction with the upper and lower sides of the hexagonal hollow feed post 14, pushing the hexagonal hollow feed post 14. Move the feed lever 18 a short distance to the left. During this process, the return spring 15 is compressed. Release the feed lever 18, and the return spring 15 returns to its original position and extends, pushing the feed plate 16 to the right relative to the hexagonal hollow feed post 14 until the upper right side of the feed plate 16 is pressed against the left side of the return stop 17 and stops. At this time, the bottom of the feed lever 18 returns to the left again. Repeatedly gripping and releasing the feed lever 18 allows the hexagonal hollow feed post 14 and the puncture needle 7 to move to the left a few short distances, allowing the puncture needle 7 to pierce the epidural space. After piercing, separate the puncture needle 7 and the hexagonal hollow feed post 14, remove the gun-type operating bracket, and then inject anesthetic into the epidural space through the puncture needle 7.

[0026] The puncture needle feeding mechanism 1 also includes a thumb-and-shoulder block 115, an acupressure pad 116, mounting studs 117, and a nut 118. The thumb-and-shoulder block 115 is provided on the top right side of the fixed handle 113. The thumb-and-shoulder block 115 limits the position of the thumb and forefinger, allowing the user to grip the fixed handle 113 better. The feed movable handle 18 has a U-shaped horizontal cross-section. An acupressure pad 116 is provided on the left side of the feed movable handle 18. The acupressure pad 116 has four finger grooves, which correspond to the user's four fingers excluding the thumb. Two mounting studs 117 are provided on the acupressure pad 116. The mounting studs 117 extend through the left side of the feed movable handle 18 into the feed movable handle 18 and are threadedly connected to the nut 118. The mounting studs 117 and the nut 118 are used for the detachable installation of the acupressure pad 116. The acupressure pad 116 is designed to improve the stability when gripping and operating the feed movable handle 18.

[0027] The puncture needle 7 is detachably mounted on the left end of the hexagonal hollow feed column 14. The left end of the puncture needle 7 is provided with a beveled edge for easy puncture.

[0028] Specifically, a receiving groove is provided on the inner side of the left end of the hexagonal hollow feed column 14, and the right end of the puncture needle 7 is installed in the receiving groove. Two annular sealing grooves are provided on the inner wall of the receiving groove, and a sealing ring 8 is installed in the annular sealing groove. The sealing ring 8 can be made of rubber, and the sealing performance at the connection between the hexagonal hollow feed column 14 and the puncture needle 7 is improved by means of the sealing ring 8.

[0029] The feed column check valve assembly 2 is installed on the upper right side of the frame 11.

[0030] The feed column anti-reverse assembly 2 includes a protruding rod 21, a movable column 22, an anti-reverse plate 23, a pressing plate 24, and an anti-reverse spring 25. The upper right side of the frame 11 is fixedly connected to the left end of the protruding rod 21. The right end of the protruding rod 21 is movably connected to the top of the anti-reverse plate 23 through the movable column 22. The bottom of the anti-reverse plate 23 is integrally connected to the pressing plate 24. The hexagonal hollow feed column 14 passes through the hexagonal hole on the anti-reverse plate 23. The section of the hexagonal hollow feed column 14 located between the sliding sleeve 23 and the anti-reverse plate 23 is fitted with the anti-reverse spring 25. The anti-reverse spring 25 is in a compressed state. The size of the hexagonal hole on the anti-reverse plate 23 is larger than the vertical cross-section of the hexagonal hollow feed post 14. The thrust of the anti-reverse spring 25 causes the bottom of the anti-reverse plate 23 to tilt to the right. The friction between the upper and lower sides of the hexagonal hole on the anti-reverse plate 23 and the upper and lower sides of the hexagonal hollow feed post 14 prevents the hexagonal hollow feed post 14 from moving to the right relative to the frame 11. When the anesthesiologist pulls the feed lever 18 toward the fixed lever 113, and pushes the hexagonal hollow feed post 14 to the left with the help of the friction between the feed plate 16 and the hexagonal hollow feed post 14, the friction between the hexagonal hollow feed post 14 and the anti-reverse plate 23 will cause the bottom of the anti-reverse plate 23 to move to the left, allowing the anti-reverse plate 23 to gradually approach a vertical state. The friction between the upper and lower sides of the hexagonal hole on the anti-reverse plate 23 and the upper and lower sides of the hexagonal hollow feed post 14... The force gradually decreases, allowing the hexagonal hollow feed post 14 to move smoothly to the left. During this process, the check spring 25 is compressed, releasing the feed handle 18. The return spring 15 returns to its original length and pushes the feed plate 16 to move to the right relative to the hexagonal hollow feed post 14. At this time, the check spring 25 also returns to its original length and pushes the bottom of the check plate 23 to move to the right again, increasing the friction between the upper and lower sides of the hexagonal hole on the check plate 23 and the upper and lower sides of the hexagonal hollow feed post 14. This prevents the hexagonal hollow feed post 14 from moving to the right due to the friction between the feed plate 16 and the hexagonal hollow feed post 14 when the return spring 15 extends and drives the feed plate 16 to move to the right relative to the hexagonal hollow feed post 14, thus achieving the anti-reverse function of the hexagonal hollow feed post 14.

[0031] Once the puncture is complete, separate the hexagonal hollow feed post 14 and the puncture needle 7. At this time, press the bottom of the check plate 23 to the left by pressing the pressing plate 24. This will compress the reset spring 15 and keep the check plate 23 in a vertical position. The friction between the check plate 23 and the hexagonal hollow feed post 14 will disappear, and the hexagonal hollow feed post 14 can be easily pulled to the right relative to the frame 11 to complete the reset work of the hexagonal hollow feed post 14 after use.

[0032] The puncture stop mechanism 4 is installed at the lower right end of the frame 11.

[0033] The puncture stop mechanism 4 includes a motor 410, a stop cam 411, and a puncture completion detection component. The motor 410 is installed at the lower right side of the frame 11. The output shaft at the front of the motor 410 is fixedly connected to the stop cam 411. The stop cam 411 is located to the left of the pressing plate 24. The right end of the hexagonal hollow feed column 14 is connected to the puncture completion detection component. The motor 410 is a servo motor. When the motor 410 is not working, the protruding part of the stop cam 411 faces directly upward.

[0034] The puncture stop mechanism 4 also includes a motor base 49, on which a motor 410 is mounted. The motor base 49 is fixed to the frame 11 by two screws.

[0035] The puncture detection assembly includes an end sleeve 41, a pressure sensor 42, a cable 43, and a controller 46. An end sleeve 41 is located at the right end of the hexagonal hollow feed column 14. The pressure sensor 42 is mounted on the end sleeve 41. One end of the cable 43 is connected to the pressure sensor 42, and the other end of the cable 43 is connected to the controller 46. The controller 46 is mounted on a boss 114, and its output is electrically connected to the input of the motor 410. The controller 46 can be a PLC controller. The electrical connection between the controller 46 and the pressure sensor 42 uses existing technology, as does the method by which the controller 46 controls the motor 410.

[0036] The puncture stop mechanism 4 also includes a power supply component, which includes a power supply 47 and a charging port 48. The power supply 47 is installed in the power supply cavity on the side of the fixing handle 113, and the charging port 48 is installed at the bottom of the power supply 47. The charging port 48 is connected to the power supply 47 through a charging line. The power supply 47 is used to supply power to the air pressure sensor 42, the motor 410 and the controller 46. The power supply 47 can be charged through the charging port 48.

[0037] The pressure sensor 42 is used to detect the pressure inside the hexagonal hollow feed column 14. When the puncture needle 7 is inserted into the epidural space, the pressure sensor 42 can detect the negative pressure inside the hexagonal hollow feed column 14 because there is negative pressure inside the epidural space and the hexagonal hollow feed column 14 is connected to the puncture needle 7. At this time, the pressure sensor 42 transmits the negative pressure electrical signal to the controller 46. The controller 46 controls the motor 410 to rotate clockwise, and the motor 410 drives the stop cam 411 to rotate clockwise. Rotate until the protruding part of the stop cam 411 abuts against the bottom left side of the anti-reverse plate 23, causing the bottom of the anti-reverse plate 23 to tilt to the right. The friction between the anti-reverse plate 23 and the hexagonal hollow feed column 14 increases, which can counteract the friction of the feed plate 16 to the left when it moves to the left. Even if the feed handle 18 is gripped tightly, it is difficult to move the hexagonal hollow feed column 14 to the left. The hexagonal hollow feed column 14 can be locked immediately after the puncture needle 7 is in place, thus completing the stopping work of the puncture needle 7.

[0038] The puncture stop mechanism 4 also includes a hexagonal sliding sleeve 44 and a cable ring 45. Multiple hexagonal sliding sleeves 44 are slidably fitted onto the right end of the hexagonal hollow feed column 14. Generally, there are no fewer than two hexagonal sliding sleeves 44. Each hexagonal sliding sleeve 44 has a cable ring 45 at its bottom, through which the cable 43 passes. The hexagonal sliding sleeves 44 and cable rings 45 work together to bring the cable 43 close to the hexagonal hollow feed column 14, serving to manage the cable and prevent it from drooping and interfering with the anesthesiologist's grip on the device. When the hexagonal hollow feed column 14 moves left and right, the hexagonal sliding sleeves 44 can also move freely along it, ensuring that the hexagonal sliding sleeves 44 and the cable 43 do not interfere with the movement of the hexagonal hollow feed column 14.

[0039] In use, the frame 11, mounting plate 112, and fixing handle 113 constitute a gun-type operating support. The fixing handle 113 facilitates the handling of the gun-type operating support. Sliding sleeve one 12 and sliding sleeve two 13 guide and limit the movement direction of the hexagonal hollow feed column 14. The feed control component is used to drive the hexagonal hollow feed column 14 to move to the left multiple times in short distances relative to the frame 11, thereby driving the puncture needle 7 at the left end of the hexagonal hollow feed column 14 to pierce the corresponding position on the patient's body. The feed column anti-reverse component 2 is used to prevent the puncture needle 7 and the hexagonal hollow feed column 14 from moving to the right during the puncture interval. When the puncture is in place, the puncture stop mechanism 4 locks the hexagonal hollow feed column 14 with the help of the feed column anti-reverse component 2. At this time, the anesthesiologist can no longer operate the feed control component, and the feed column anti-reverse component 2 and the puncture needle 7 can no longer move to the left to pierce the patient's body, thus improving the safety of the puncture.

[0040] Example 2, please refer to Figures 1 to 9 This embodiment provides a technical solution: an epidural anesthesia puncture device for use in pain management departments. This embodiment is structurally similar to Embodiment 1, with the difference being: To control the single puncture depth of the puncture needle 7 after each gripping of the feed handle 18, a handle clamping amplitude control component 3 is also provided. The handle clamping amplitude control component 3 includes a control nut 31, a control stud 32, a knob 33, and a stop plate 34. The control nut 31 is provided on the rear side of the boss 114. The control nut 31 is internally threaded to the transverse control stud 32. The knob 33 is provided on the right end of the control stud 32. The stop plate 34 is provided on the rear side of the feed handle 18, located to the left of the control stud 32. Each time the feed control lever 18 moves towards the fixed lever 113, the puncture needle 7 is inserted. Each time the feed control lever 18 is gripped tightly against the fixed lever 113, the single puncture depth of the puncture needle 7 is maximized. If the anesthesiologist is not proficient in using this method, in order to operate conservatively, the control stud 32 can be turned by the knob 33 to bring the control stud 32 closer to the stop plate 34. At this time, when the feed control lever 18 is gripped tightly, it can no longer be completely pressed against the fixed lever 113, and the single puncture depth of the puncture needle 7 will be reduced, thus increasing safety.

[0041] Example 3, please refer to Figures 1 to 9 This embodiment provides a technical solution: an epidural anesthesia puncture device for use in pain management departments. This embodiment is structurally similar to Embodiment 2, with the difference being: To support the gun-type operating bracket and control the puncture angle of the puncture needle 7, an insertion angle control mechanism 5 is also provided. The insertion angle control mechanism 5 includes a rotating shaft 51, a rotating sleeve 52, a support leg 53, an angle locking component, and an angle indicating component. The front and rear sides of the sliding sleeve 12 are respectively fixedly connected to the longitudinal rotating shaft 51. The ends of the two rotating shafts 51 away from the sliding sleeve 12 are respectively rotatably connected to two rotating sleeves 52 through bearings. The left sides of the two rotating sleeves 52 are respectively fixedly connected to the right ends of the two support legs 53. The left ends of the two support legs 53 are connected to the insertion direction control mechanism 6. The rotating shaft 51 on the front side is connected to the right end of the front support leg 53 through the angle locking component, and the end of the rotating shaft 51 away from the sliding sleeve 12 is connected to the angle indicating component.

[0042] The angle locking assembly includes a locking disc 54, an annular toothed groove 55, a square rod 56, a compression spring 57, a locking tooth 58, and a pull ring 59. The locking disc 54 is fixedly sleeved in the middle of the front rotating shaft 51. The front side of the locking disc 54 has an annular toothed groove 55, and the annular toothed groove 55 has a ring array of engaging teeth. The right end of the front support leg 53 has a rectangular sliding hole, and the square rod 56 is longitudinally slidably connected in the rectangular sliding hole. The front end of the square rod 56 is equipped with a pull ring 59, and the rear end of the square rod 56 is fixedly connected with a locking tooth 58. The section of the square rod 56 between the support leg 53 and the locking tooth 58 is sleeved with a compression spring 57. The elastic force of the compression spring 57 pushes the square rod 56 to move backward relative to the support leg 53, so that the rear tip of the locking tooth 58 engages with the corresponding engaging tooth in the annular toothed groove 55. When it is necessary to adjust the angle between the puncture needle 7 and the puncture position, pull the square rod 56 forward with the pull ring 59 to make the rear tip of the locking tooth 58 leave the annular tooth groove 55. The compression spring 57 is compressed, causing the rotating shaft 51 to rotate relative to the rotating sleeve 52, thereby changing the angle between the puncture needle 7 and the puncture position to the required angle. Then, release the pull ring 59, and the compression spring 57 returns to its original position and extends, allowing the rear tip of the locking tooth 58 to engage with the corresponding locking tooth in the annular tooth groove 55, thus completing the locking of the rotating shaft 51 and the support leg 53.

[0043] The needle insertion direction control mechanism 6 is close to the patient's body to be punctured, and plays a supporting role for the support leg 53 in the needle insertion angle control mechanism 5. The rotating shaft 51 rotates relative to the rotating sleeve 52, which can change the angle between the puncture needle 7 and the puncture position. The angle indicator component is used to indicate the tilt angle of the puncture needle 7 relative to the puncture position. Then, the angle locking component locks the rotating shaft 51 and the support leg 53 on the front side, that is, locks the tilt angle of the puncture needle 7 relative to the puncture position. After locking, the puncture needle 7 can be stably inserted into the patient's body at a specific tilt angle.

[0044] The angle indicator assembly includes a pointer 510 and an angle ruler 511. The pointer 510 is mounted on the end of the rotating shaft 51 away from the sliding sleeve 12, and the angle ruler 511 is provided on the side of the rotating sleeve 52 away from the sliding sleeve 12. The pointer 510 rotates with the rotating shaft 51, and the angle ruler 511, in conjunction with the pointer 510, can indicate the tilt angle of the puncture needle 7 relative to the puncture position.

[0045] The needle insertion direction control mechanism 6 includes a rotating ring 61, a fixed ring 62, a silicone annular pad 63, and a needle insertion direction locking assembly. The left ends of the two support legs 53 are respectively connected to the front and rear sides of the inner side of the rotating ring 61. The left end of the rotating ring 61 is rotatably connected to the fixed ring 62. The left side of the fixed ring 62 is provided with a silicone annular pad 63. The fixed ring 62 is connected to the rotating ring 61 through the needle insertion direction locking assembly.

[0046] The needle insertion direction locking assembly includes protruding teeth 64, a bracket 65, a pin 66, a V-shaped bracket 67, locking teeth 68, and a torsion spring 69. The right edge of the rotating ring 61 has a circular array of protruding teeth 64. The right side of the fixing ring 62 is fixedly connected to the bracket 65 by screws. The bracket 65 is movably connected to the bend of the V-shaped bracket 67 via the pin 66. Two locking teeth 68 are provided at one end of the V-shaped bracket 67 near the rotating ring 61. A torsion spring 69 is sleeved on the pin 66. One end of the torsion spring 69 is connected to the bracket 65, and the other end is connected to the V-shaped bracket 67. The torque of the torsion spring 69 causes the locking teeth 68 to engage. 8 engages with the corresponding protrusion 64 on the rotating ring 61, thereby locking the rotating ring 61 and the fixed ring 62. When the rotating ring 61 needs to rotate relative to the fixed ring 62, press the end of the V-shaped bracket 67 away from the rotating ring 61 to overcome the torque of the torsion spring 69 and disengage the locking tooth 68 from the protrusion 64. At this time, the rotating ring 61 can rotate relative to the fixed ring 62. After the inclined puncture needle 7 is aligned in the correct direction, release the V-shaped bracket 67. The torque of the torsion spring 69 will re-engage the locking tooth 68 with the corresponding protrusion 64 on the rotating ring 61, thus re-locking the relative positions of the rotating ring 61 and the fixed ring 62.

[0047] The silicone ring pad 63 contacts the patient's body, increasing friction. Holding the gun-type operating bracket and keeping the silicone ring pad 63 close to the patient's body can stably maintain the position of the gun-type operating bracket. The rotating ring 61 rotates relative to the fixed ring 62, which can change the orientation of the tilted puncture needle 7. Then, the rotating ring 61 and the fixed ring 62 are locked by the needle insertion direction locking component, which allows the puncture needle 7 to be inserted into the patient's body at a specific orientation and a specific tilt angle. When the puncture needle 7 is inserted perpendicular to the patient's body, the rotating ring 61 can rotate relative to the fixed ring 62 to provide the anesthesiologist with better grip comfort.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A puncture device for epidural anesthesia in a pain management department, characterized in that, include: The puncture needle feeding mechanism (1) includes a frame (11), a hexagonal hollow feeding column (14) and a feeding control component. A sliding sleeve (12) is provided on the left side of the frame (11), and a sliding sleeve (13) is provided on the right side of the frame (11). The hexagonal hollow feeding column (14) is slidably connected to the sliding sleeve (12) and the sliding sleeve (13). The lower right end of the frame (11) is connected to the top of the fixing handle (113) through the mounting plate (112). A boss (114) is connected to the top of the fixing handle (113). The feeding control component is installed in the lower right corner of the frame (11). The puncture needle (7) is detachably mounted on the left end of the hexagonal hollow feed column (14); The feed column check valve assembly (2) is installed on the upper right side of the frame (11); The puncture stop mechanism (4) is installed on the lower right side of the frame (11).

2. The epidural anesthesia puncture device for pain management departments according to claim 1, characterized in that: The feed control assembly includes a return spring (15), a feed plate (16), a return stop (17), a feed handle (18), a mounting shaft (19), and a movable shaft (110). The hexagonal hollow feed column (14) is located between the sliding sleeve one (12) and the sliding sleeve two (13) and is fitted with a return spring (15). The hexagonal hollow feed column (14) is located between the return spring (15) and the sliding sleeve two (13) and passes through the hexagonal hole on the feed plate (16). The lower right corner of the frame (11) is movably connected to the top of the feed handle (18) through the mounting shaft (19). The top of the feed handle (18) is movably connected to the bottom of the feed plate (16) through the movable shaft (110). The upper right corner of the frame (11) is provided with a return stop (17).

3. The epidural anesthesia puncture device for pain management departments according to claim 1, characterized in that: The feed column anti-reverse assembly (2) includes a protruding rod (21), an anti-reverse plate (23), a pressing plate (24), and an anti-reverse spring (25). The upper right side of the frame (11) is fixedly connected to the left end of the protruding rod (21), and the right end of the protruding rod (21) is movably connected to the top of the anti-reverse plate (23). The bottom of the anti-reverse plate (23) is connected to the pressing plate (24). The hexagonal hollow feed column (14) passes through the hexagonal hole on the anti-reverse plate (23). The segment of the hexagonal hollow feed column (14) located between the sliding sleeve (13) and the anti-reverse plate (23) is sleeved with an anti-reverse spring (25).

4. The epidural anesthesia puncture device for pain management departments according to claim 3, characterized in that: The puncture stop mechanism (4) includes a motor (410), a stop cam (411) and a puncture arrival detection component. The motor (410) is installed on the lower right side of the frame (11). The stop cam (411) is fixedly connected to the output shaft on the front side of the motor (410). The puncture arrival detection component is connected to the right end of the hexagonal hollow feed column (14).

5. The epidural anesthesia puncture device for pain management departments according to claim 4, characterized in that: The puncture detection assembly includes an end sleeve (41), a pressure sensor (42), a cable (43), and a controller (46). The right end of the hexagonal hollow feed column (14) is provided with an end sleeve (41), and a pressure sensor (42) is installed on the end sleeve (41). The pressure sensor (42) is connected to one end of the cable (43), and the other end of the cable (43) is connected to the controller (46). The controller (46) is installed on the boss (114), and the output end of the controller (46) is electrically connected to the input end of the motor (410).

6. The epidural anesthesia puncture device for pain management departments according to claim 5, characterized in that: The puncture stop mechanism (4) also includes a hexagonal sliding sleeve (44) and a cable ring (45). Multiple hexagonal sliding sleeves (44) are slidably connected to the right end of the hexagonal hollow feed column (14). Each hexagonal sliding sleeve (44) has a cable ring (45) at its bottom, and the cable (43) passes through the cable ring (45).

7. The epidural anesthesia puncture device for pain management departments according to claim 2, characterized in that: It also includes a movable handle clamping amplitude control component (3), which includes a control nut (31), a control stud (32), a knob (33) and a stop plate (34). The control nut (31) is provided on the rear side of the boss (114). The control nut (31) is internally threaded to the transverse control stud (32). The knob (33) is provided on the right end of the control stud (32). The stop plate (34) is provided on the rear side of the feed movable handle (18) to the left of the control stud (32).

8. The epidural anesthesia puncture device for pain management departments according to claim 1, characterized in that: It also includes a needle insertion angle control mechanism (5), which includes a rotating shaft (51), a rotating sleeve (52), a support leg (53), an angle locking component and an angle indicating component. The front and rear sides of the sliding sleeve (12) are respectively fixedly connected to longitudinal rotating shafts (51). The ends of the two rotating shafts (51) away from the sliding sleeve (12) are respectively rotatably connected to two rotating sleeves (52). The left sides of the two rotating sleeves (52) are respectively fixedly connected to the right ends of two support legs (53). The left ends of the two support legs (53) are connected to a needle insertion direction control mechanism (6). The rotating shaft (51) on the front side is connected to the right end of the support leg (53) on the front side through the angle locking component, and the end of the rotating shaft (51) away from the sliding sleeve (12) is connected to an angle indicating component.

9. The epidural anesthesia puncture device for pain management departments according to claim 8, characterized in that: The angle indicator component includes a pointer (510) and an angle ruler (511). The pointer (510) is installed on the end of the rotating shaft (51) away from the sliding sleeve (12), and the angle ruler (511) is provided on the side of the rotating sleeve (52) away from the sliding sleeve (12).

10. The epidural anesthesia puncture device for pain management departments according to claim 8, characterized in that: The needle insertion direction control mechanism (6) includes a rotating ring (61), a fixed ring (62), a silicone ring pad (63), and a needle insertion direction locking assembly. The left ends of the two legs (53) are respectively connected to the front and rear sides of the rotating ring (61). The left end of the rotating ring (61) is rotatably connected to the fixed ring (62). The left side of the fixed ring (62) is provided with a silicone ring pad (63). The fixed ring (62) is connected to the rotating ring (61) through the needle insertion direction locking assembly.

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