Pressure measurement alarm device for nerve block anesthesia injection

Abstract

The invention discloses a nerve block anesthesia injection pressure measurement alarm device which comprises an injection needle cylinder used for injecting anesthesia and an alarm body used for alarming, a sealing piston is slidably installed in the injection needle cylinder, and a push rod is fixedly installed on the side face of the sealing piston. A liquid crystal display screen used for displaying the working state is fixedly installed on the front side of the alarm body, an indicator light which is turned on according to the situation is arranged above the liquid crystal display screen, and control keys used for adjusting parameters are arranged below the liquid crystal display screen. According to the pressure measurement alarm device for nerve block anesthesia injection, when the injection needle cylinder is used for injecting anesthesia, the injection pressure condition is monitored in real time through the pressure sensor installed at the front end of the injection needle cylinder, when the pressure is increased, the blocking condition appears, and at the moment, the signal transmission line transmits a signal to the alarm body; alarm (sound and light) is given out through an indicator light and a loudspeaker in the alarm body.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a pressure measurement and alarm device for nerve block anesthesia injection. Background Art

[0002] Nerve block anesthesia is a common local anesthesia technique that achieves anesthesia by blocking the conduction of specific nerves or nerve plexuses. This type of anesthesia is often used in surgery, pain management, and certain diagnostic procedures. During the injection process, the pressure of the injection needs to be monitored to avoid excessive pressure causing damage to the patient. By adding a pressure sensor to the injection syringe, the pressure situation can be monitored in real time, helping doctors to adjust the injection speed in time.

[0003] As in the prior art, a Chinese patent with publication number CN111265755A discloses an ultrasonic nerve block anesthesia injection pressure measurement alarm device, comprising a syringe, a pressure sensor, a restraining unit and a mounting seat; the syringe: the liquid outlet position of the syringe is connected to a nerve block puncture needle through a three-way connector; the pressure sensor: the pressure sensor is connected to the three-way connector through a connecting mechanism; the mounting seat: a single-chip microcomputer and an alarm unit are installed on the side of the mounting seat, a power supply is built into the mounting seat, and the single-chip microcomputer is electrically connected to the pressure sensor through a telescopic cable; the restraining unit: the restraining unit comprises a hinge and a restraining belt, the restraining belt is hinged to the mounting seat through a hinge, the restraining belt has two groups, the two groups of restraining belts are symmetrically arranged up and down, and the ends of the two groups of restraining belts are connected through a plug-in unit. The ultrasonic nerve block anesthesia injection pressure measurement alarm device has good flexibility in use, is convenient for use in the field, is highly practical, and is easy to carry.

[0004] As another example in the prior art, a Chinese patent with publication number CN109045434A discloses a pressure measurement and alarm device for nerve block anesthesia injection under ultrasound, comprising a three-way pipe joint and a control host, wherein the three-way pipe joint is arranged on a connecting pipe, and the two ends of the connecting pipe are respectively connected to a syringe and a nerve block puncture needle, and the left and right ends of the three-way pipe joint are both connected to the connecting pipe, a pressure sensor is arranged on the upper end of the three-way pipe joint, a touch display screen is arranged on the front side of the control host, an audible and visual alarm is also fixedly installed on the front side of the control host, a charging interface is arranged on the lower side of the control host, a battery is arranged in the inner cavity of the control host, and a controller, an AD converter and a DA converter are arranged on the right side of the battery, which can control the audible and visual alarm to emit different sounds and colors. The anesthesiologist can make a quick judgment by hearing and vision without leaving the ultrasound screen, which is convenient for operation and also beneficial to safety.

[0005] As another example in the prior art, a Chinese patent with publication number CN115300066A discloses an ultrasound-guided nerve block anesthesia injection pressure measurement alarm device, comprising an injection mechanism, the injection mechanism comprising a frame, a first fixing groove is provided at the rear end of the frame, a fixing plate is movably connected inside the first fixing groove, a first card slot is provided at the front end of the frame, an injection piece is installed inside the first card slot, and a sealing ring is provided at the connection between the injection piece and the first card slot; an operating mechanism is provided at the bottom of the injection mechanism, and a fixing mechanism is provided at the bottom of the operating mechanism. The ultrasonic display is used to facilitate real-time detection of the injection pressure value, and the alarm light is used to set an alarm when the pressure value exceeds the set safety value, so that the staff can immediately stop the injection to ensure the safety of the patient and avoid nerve damage to the patient caused by high pressure.

[0006] Based on the above materials, it can be seen that in the prior art, a pressure sensor is usually used in conjunction with an alarm. When the pressure sensor detects a pressure change, the alarm is turned on to remind the doctor to take corresponding actions. However, in actual use, it takes a certain amount of time for the doctor to react when seeing the alarm, which will cause a lag in the operation. Summary of the invention

[0007] The purpose of the present invention is to provide a pressure measurement and alarm device for nerve block anesthesia injection to solve the problem of hysteresis in doctor's operation mentioned in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a pressure measurement alarm device for nerve block anesthesia injection, comprising a syringe for injecting anesthetic drugs and an alarm body for alarming, a sealing piston is slidably installed inside the syringe, and a push rod is fixedly installed on the side of the sealing piston, and also includes: A liquid crystal display screen for displaying the working status is fixedly installed on the front side of the alarm body, and an indicator light that lights up according to the situation is set above the liquid crystal display screen, and a control button for adjusting parameters is set below the liquid crystal display screen. Speakers for issuing alarm sounds are fixedly installed on the left and right sides of the alarm body; A clamping plate is installed at the rear side of the alarm body, and two clamping plates are symmetrically arranged up and down, and the upper and lower clamping plates cooperate to clamp the side of the bed; A pressure sensor for detecting the internal liquid pressure is fixedly installed on the front side of the injection syringe, and the pressure sensor communicates with the alarm body through a signal transmission line fixedly installed therewith; An injection hose is installed at the top end of the injection syringe, and a mounting block is mounted on the outside of the injection hose, and an extrusion mechanism for extruding the injection hose is arranged inside the mounting block.

[0009] Preferably, a protective cushion made of silicone is fixedly mounted on the inner surface of the clamping plate, and an adsorption magnetic block is fixedly mounted on the back of the alarm body, so as to improve the fixing effect of the alarm body by utilizing the adsorption magnetic block.

[0010] Preferably, a through-type up-and-down sliding structure is formed between the clamping plate and the guide slide rod, and a pulling spring is installed on the outside of the guide slide rod, and the upper and lower ends of the pulling spring are fixedly connected to the clamping plate, and the clamping plate is pulled by the pulling spring to fix the alarm body.

[0011] Preferably, the extrusion mechanism includes a receiving groove opened inside the mounting block, and a first piston plate arranged transversely is installed inside the receiving groove, and the mounting block is connected with an injection hose through the receiving groove, and the piston plate slides inside the receiving groove by injecting air.

[0012] Preferably, an extrusion block is fixedly mounted on the upper surface of the first piston plate, and the extrusion block and the injection hose correspond to each other in position and squeeze each other, and the first piston plate drives the extrusion block to squeeze the injection hose, thereby controlling the injection speed.

[0013] Preferably, a connecting air pipe is fixedly installed below the mounting block, and the front end of the connecting air pipe is communicated with the receiving groove, and the rear end of the connecting air pipe is communicated with the air box.

[0014] Preferably, a fixing strap is fixedly installed on the side of the inflation box, and the inflation box and the injection syringe form a disassembly and installation structure through the fixing strap.

[0015] Preferably, an electromagnetic three-way valve is installed on the outside of the connecting air pipe, and the electromagnetic three-way valve communicates with the alarm body through a Bluetooth signal, and the alarm body can control the opening and closing of the electromagnetic three-way valve.

[0016] Preferably, a second piston plate is slidably mounted inside the air box, and a connecting rod is fixedly mounted on the side of the second piston plate, and a through sliding structure is formed between the connecting rod and the air box.

[0017] Preferably, a mounting plate is fixedly mounted on the bottom end of the connecting rod, and a snap-in groove is provided on the side of the mounting plate, and the snap-in groove and the push rod are snap-fitted with each other, and the installation between the connecting rod and the push rod is achieved by snapping the snap-in groove with the push rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the pressure measurement alarm device for nerve block anesthesia injection adopts a new structural design, and its specific contents are as follows: 1. When injecting anesthetic drugs with a syringe, the pressure sensor installed at the front end of the syringe monitors the injection pressure in real time. When the pressure increases, it means that there is a blockage. At this time, the signal transmission line transmits the signal to the alarm body, and the indicator light and speaker in the alarm body send out an alarm (sound and light) to remind the doctor to make corresponding operational adjustments, such as slowing down the injection speed, etc. Furthermore, a clamping plate is provided at the rear of the alarm body, and the elastic pulling action of the pulling spring is utilized to pull the clamping plate to slide outside the guide slide bar, so that the clamping plate is clamped on the side of the bed, thereby fixing the alarm body and reducing the trouble of the doctor needing to hold the alarm in hand during operation. In the process of fixing, the magnetic adsorption effect of the adsorption magnet can be utilized to improve the firmness of the fixation.

[0019] 2. The engagement groove on the side of the mounting plate is engaged with the push rod, so that when the push rod moves, the connecting rod can be driven to move synchronously, and the connecting rod drives the second piston plate to slide in the air box, and the air in the air box is discharged through the electromagnetic three-way valve; Furthermore, when the alarm body is turned on, the outlet position of the electromagnetic three-way valve is adjusted through the Bluetooth signal, so that the air in the inflation box can enter the mounting block through the connecting air pipe, and the second piston plate inside the mounting block is pushed upward under the action of air pressure, so that the second piston plate drives the extrusion block to move synchronously, thereby making the extrusion block squeeze the injection hose, thereby achieving the purpose of controlling the flow rate of the drug in the injection hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the injection syringe of the present invention; Figure 3 It is a schematic diagram of the structure of the clamping plate of the present invention; Figure 4 This is a schematic structural diagram of the connection relationship between the clamping plate and the guide slide rod of the present invention; Figure 5 This is a schematic diagram of the connection relationship between the pressure sensor and the mounting block of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the mounting block of the present invention; Figure 7 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 8 This is a structural schematic diagram of the connection relationship between the mounting block and the blow box of the present invention; Fig. 9 For the present invention Figure 8 The enlarged structural diagram at B in the middle; Fig.10 It is a schematic diagram of the cross-sectional structure of the air box of the present invention.

[0021] In the figure: 1. injection syringe; 2. alarm body; 3. push rod; 4. sealing piston; 5. liquid crystal display; 6. indicator light; 7. control button; 8. speaker; 9. clamping plate; 10. protective cushion; 11. guide slide bar; 12. pull spring; 13. adsorption magnetic block; 14. pressure sensor; 15. signal transmission line; 16. injection hose; 17. mounting block; 18. accommodating groove; 19. first piston plate; 20. extrusion block; 21. connecting air pipe; 22. inflation box; 23. electromagnetic three-way valve; 24. fixing strap; 25. second piston plate; 26. connecting rod; 27. mounting plate; 28. engaging groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 2 In order to achieve the purpose of monitoring the injection pressure, the present embodiment provides the following technical solutions, using a pressure sensor 14 to monitor the injection pressure in real time, and then providing feedback through the alarm body 2, specifically disclosing: an injection syringe 1 for injecting anesthetic drugs and an alarm body 2 for alarming, a sealing piston 4 is slidably installed inside the injection syringe 1, and a push rod 3 is fixedly installed on the side of the sealing piston 4, a liquid crystal display screen 5 for displaying the working status is fixedly installed on the front side of the alarm body 2, and an indicator light 6 that lights up according to the situation is arranged above the liquid crystal display screen 5, and a control button 7 for adjusting parameters is arranged below the liquid crystal display screen 5, speakers 8 for issuing alarm sounds are fixedly installed on the left and right sides of the alarm body 2, a pressure sensor 14 for detecting the internal liquid pressure is fixedly installed on the front side of the injection syringe 1, and the pressure sensor 14 communicates with the alarm body 2 through a signal transmission line 15 fixedly installed therewith.

[0024] When using the device, first load the anesthetic into the injection syringe 1, and then the doctor operates the push rod 3, so that the push rod 3 drives the sealing piston 4 to move in the injection syringe 1, and injects the anesthetic into the patient's body through the injection hose 16. During the injection process, the pressure sensor 14 at the front end of the injection syringe 1 is used to monitor the injection pressure in real time. When the pressure changes, the pressure sensor 14 transmits the signal to the alarm body 2 through the signal transmission line 15. At this time, the alarm body 2 turns on the indicator light 6 and the speaker 8 to sound an alarm (its parameters can be adjusted through the LCD display 5 and the control button 7 to adapt to different usage situations), reminding the doctor to make corresponding operational adjustments.

[0025] Example 2: Please refer to Figure 3-Figure 4 In order to solve the problem that traditional devices need to be held in hand during operation and cause inconvenience, this embodiment provides the following technical solutions, in which the alarm body 2 is clamped and fixed to the side of the bed by a clamping device, and specifically discloses: a clamping plate 9 is installed on the rear side of the alarm body 2, and two clamping plates 9 are symmetrically arranged up and down, and the upper and lower clamping plates 9 cooperate to clamp the side of the bed, and a protective cushion 10 made of silicone is fixedly installed on the inner surface of the clamping plate 9, and an adsorption magnetic block 13 is fixedly installed on the back of the alarm body 2, and a through-type up and down sliding structure is formed between the clamping plate 9 and the guide slide bar 11, and a pulling spring 12 is installed on the outside of the guide slide bar 11, and the upper and lower ends of the pulling spring 12 are fixedly connected to the clamping plate 9.

[0026] Before using the device, place the alarm body 2 on the side of the bed. First, use the adsorption magnetic block 13 to adsorb the alarm body 2 on the side of the bed. Then, under the elastic pulling action of the pulling spring 12, the clamping plate 9 is driven to move to the middle position (at this time, the clamping plate 9 slides outside the guide slide rod 11). Finally, the clamping plate 9 is used to clamp and fix the alarm body 2 on the side of the bed to reduce the doctor's hand-held operation.

[0027] Example 3: Please refer to Figure 5-Figure 10In order to solve the problem of the traditional device after operation due to the doctor's reaction, the present embodiment provides the following technical solution, which controls the injection speed by squeezing the hose, and specifically discloses: an injection hose 16 is installed at the top of the injection syringe 1, and a mounting block 17 is mounted on the outside of the injection hose 16, and an extrusion mechanism for squeezing the injection hose 16 is arranged inside the mounting block 17, and the extrusion mechanism includes a receiving groove 18 opened inside the mounting block 17, and a first piston plate 19 arranged horizontally is installed inside the receiving groove 18, and the mounting block 17 is connected with the injection hose 16 through, and an extrusion block 20 is fixedly installed on the upper surface of the first piston plate 19, and the positions of the extrusion block 20 and the injection hose 16 correspond to each other up and down and squeeze each other, and a connecting air pipe 21 is fixedly installed below the mounting block 17, and the connecting air pipe The front end of 21 is connected with the accommodating groove 18, and the rear end of the connecting air pipe 21 is connected with the air box 22, a fixing strap 24 is fixedly installed on the side of the air box 22, and the air box 22 forms a disassembly and installation structure with the injection syringe 1 through the fixing strap 24, an electromagnetic three-way valve 23 is installed on the outside of the connecting air pipe 21, and the electromagnetic three-way valve 23 communicates with the alarm body 2 through a Bluetooth signal, a second piston plate 25 is slidably installed inside the air box 22, and a connecting rod 26 is fixedly installed on the side of the second piston plate 25, and a through sliding structure is formed between the connecting rod 26 and the air box 22, a mounting plate 27 is fixedly installed on the bottom end of the connecting rod 26, and a snap-fit ​​groove 28 is opened on the side of the mounting plate 27, and the snap-fit ​​groove 28 and the push rod 3 are snap-fitted and installed with each other.

[0028] Before using the device, the snap-fit ​​groove 28 on the side of the mounting plate 27 is snap-fitted with the push rod 3 to realize the connection between the connecting rod 26 and the push rod 3. After that, when the push rod 3 is operated, the connecting rod 26 moves synchronously under the driving action of the mounting plate 27, and the connecting rod 26 drives the second piston plate 25 to move inside the air box 22 (the air box 22 is fixedly mounted on the side of the injection syringe 1 by the fixing strap 24). Under normal circumstances, the air squeezed by the second piston plate 25 is discharged from the electromagnetic three-way valve 23 through the connecting air pipe 21. When the alarm body 2 is turned on, the air is discharged from the electromagnetic three-way valve 23 by the connecting air pipe 21. The Bluetooth signal of the alarm body 2 switches the outlet position of the electromagnetic three-way valve 23. At this time, the air squeezed out by the second piston plate 25 enters the accommodating groove 18 inside the mounting block 17 through the connecting air pipe 21, and the increased air pressure inside the accommodating groove 18 pushes the first piston plate 19 to move upward. In the process of the first piston plate 19 moving upward, the extrusion block 20 on its upper surface is driven to move upward synchronously. Finally, the extrusion block 20 is used to extrude the injection hose 16, causing the injection hose 16 to deform, thereby controlling the flow rate of the drug in the injection hose 16 and preventing the injection pressure from continuing to rise.

[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure measurement alarm device for nerve block anesthetic injection, comprising a syringe (1) for injecting anesthetic drugs and an alarm body (2) for alarming, wherein a sealing piston (4) is slidably mounted inside the syringe (1), and a push rod (3) is fixedly mounted on the side of the sealing piston (4), characterized in that: Also includes: A liquid crystal display screen (5) for displaying the working status is fixedly mounted on the front side of the alarm body (2), an indicator light (6) that lights up according to the situation is arranged above the liquid crystal display screen (5), and a control button (7) for adjusting parameters is arranged below the liquid crystal display screen (5), and loudspeakers (8) for emitting alarm sounds are fixedly mounted on the left and right sides of the alarm body (2); A clamping plate (9) is installed on the rear side of the alarm body (2), and two clamping plates (9) are symmetrically arranged in an upper and lower manner, and the upper and lower clamping plates (9) cooperate to clamp the side of the hospital bed; A pressure sensor (14) for detecting the internal liquid pressure is fixedly mounted on the front side of the injection syringe (1), and the pressure sensor (14) communicates with the alarm body (2) via a signal transmission line (15) fixedly mounted thereon; An injection hose (16) is installed at the top end of the injection syringe (1), and a mounting block (17) is mounted on the outside of the injection hose (16) in a snap-fit ​​manner, and a squeezing mechanism for squeezing the injection hose (16) is provided inside the mounting block (17).

2. A pressure measurement and alarm device for nerve block anesthesia injection according to claim 1, characterized in that: A protective cushion (10) made of silicone is fixedly mounted on the inner surface of the clamping plate (9), and an adsorption magnetic block (13) is fixedly mounted on the back of the alarm body (2).

3. A pressure measurement and alarm device for nerve block anesthesia injection according to claim 2, characterized in that: A through-type up-and-down sliding structure is formed between the clamping plate (9) and the guide slide bar (11), and a pulling spring (12) is installed outside the guide slide bar (11), and the upper and lower ends of the pulling spring (12) are fixedly connected to the clamping plate (9).

4. The pressure measurement and alarm device for nerve block anesthesia injection according to claim 1, characterized in that: The extrusion mechanism comprises a receiving groove (18) opened inside the mounting block (17), a first piston plate (19) arranged transversely is installed inside the receiving groove (18), and the mounting block (17) is connected through the injection hose (16).

5. A pressure measurement and alarm device for nerve block anesthesia injection according to claim 4, characterized in that: An extrusion block (20) is fixedly mounted on the upper surface of the first piston plate (19), and the extrusion block (20) and the injection hose (16) correspond to each other in position up and down and extrudes each other.

6. A pressure measurement and alarm device for nerve block anesthesia injection according to claim 5, characterized in that: A connecting air pipe (21) is fixedly mounted below the mounting block (17), and the front end of the connecting air pipe (21) is in communication with the receiving groove (18), and the rear end of the connecting air pipe (21) is in communication with the air box (22).

7. A pressure measurement and alarm device for nerve block anesthesia injection according to claim 6, characterized in that: A fixing strap (24) is fixedly mounted on the side of the inflation box (22), and the inflation box (22) and the injection syringe (1) form a disassembly and installation structure through the fixing strap (24).

8. The pressure measurement and alarm device for nerve block anesthesia injection according to claim 6, characterized in that: An electromagnetic three-way valve (23) is installed outside the connecting air pipe (21), and the electromagnetic three-way valve (23) communicates with the alarm body (2) via a Bluetooth signal.

9. The pressure measurement and alarm device for nerve block anesthesia injection according to claim 7, characterized in that: A second piston plate (25) is slidably mounted inside the air box (22), and a connecting rod (26) is fixedly mounted on the side of the second piston plate (25), and a through-sliding structure is formed between the connecting rod (26) and the air box (22).

10. A pressure measurement and alarm device for nerve block anesthesia injection according to claim 9, characterized in that: A mounting plate (27) is fixedly mounted on the bottom end of the connecting rod (26), and a snap-fit ​​groove (28) is provided on the side of the mounting plate (27), and the snap-fit ​​groove (28) and the push rod (3) are snap-fitted with each other.

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