Anesthesia system for brachial plexus

Abstract

The anesthesia system comprises a base, a first supporting rod is arranged on the base, a second supporting rod is arranged on the first supporting rod in a sliding mode, an injector is connected to the second supporting rod in a clamped mode, a push-pull rod is connected to the first supporting rod, and a pressure measuring hole is formed in one side of an injection head; a connecting plate is arranged at the end of the push-pull rod, an annular air bag is arranged on the connecting plate, the piston rod is sleeved with the air bag, a plurality of abutting rods are evenly distributed on the inner wall of the air bag, and an annular groove is formed in the side wall of the piston rod. After the air bag is inflated, it is ensured that the piston rod pushes anesthetic to be injected only under the normal resistance condition through the occlusion effect of the abutting rod and the annular groove, and the emergency situations such as puncture needle displacement or blood vessel puncture caused by accidental movement of a patient are effectively prevented; the medical operation risk is reduced, precise control over the injection process is achieved through intelligent induction, and a higher-level safety guarantee is provided for clinical anesthesia.

Description

Technical Field

[0001] The present invention relates to the technical field of medical supplies, and particularly to an anesthetic system for brachial plexus nerves. Background Art

[0002] In the existing medical injection technology, traditional syringes lack intelligent monitoring and automatic protection mechanisms. When the puncture needle is displaced due to the patient's nervousness or accidental movement and pierces the blood vessel, the injection resistance will increase instantaneously, but it is difficult for the operator to perceive it in real time, which is likely to cause extravasation of the liquid medicine, tissue damage or even serious complications. At the same time, manually controlling the injection force depends on the experience of medical staff and there is a risk of over-injection. Therefore, an anesthetic system for brachial plexus nerves is proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide an anesthetic system for brachial plexus nerves to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An anesthetic system for brachial plexus nerves, including a base, a first support rod is arranged on the base, a second support rod is slidably connected to the first support rod along the length direction of the first support rod, a syringe is clamped on the second support rod, the syringe includes a syringe barrel, an injection head and a piston rod, a puncture needle for piercing into the human body is connected to the front end of the injection head, a push-pull rod for driving the second support rod and the piston rod to slide is slidably connected to the first support rod through a first electric push rod, the first electric push rod is fixedly installed on the first support rod, and the output shaft of the first electric push rod is connected to the push-pull rod. When the first electric push rod is started, the output shaft of the first electric push rod drives the push-pull rod to slide along the length direction of the first support rod;

[0005] A monitoring box is arranged on the side wall of the base, an induction box is arranged inside the monitoring box, a first pipeline is arranged on the induction box, and a pressure sensor is arranged on the side wall of the induction box. A pressure measuring hole is arranged on one side of the injection head, and a deformable elastic membrane is arranged between the pressure measuring hole and the first pipeline;

[0006] An air pump is arranged inside the monitoring box, and a controller is also arranged on the monitoring box. The controller is electrically connected to the air pump and the pressure sensor. A connecting plate is arranged at the end of the push-pull rod, an annular airbag is arranged on the connecting plate, the airbag is connected to the air outlet of the air pump through a second pipeline, and the airbag is sleeved on the piston rod. A plurality of pressing rods are evenly distributed on the inner wall of the airbag. A ring groove is arranged on the side wall of the piston rod. When the airbag is inflated, the airbag bulges so that the plurality of pressing rods abut against the inside of the ring groove.

[0007] Preferably, one end of the first support rod is fixed with a first slider, and the other end is provided with a first chute. One end of the second support rod is provided with a second slider fixed thereto, and the other end is provided with a second chute. The first slider is slidably connected to the inside of the second chute, and the second slider is slidably connected to the inside of the first chute.

[0008] Preferably, the second slider is slidably sleeved on the push rod, and on both sides of the push rod on the second slider, there are pressing blocks slidably connected by springs. On one end of both pressing blocks close to the push rod, there are clamping blocks provided. On both sides of the push rod, there are card slots opened. The clamping blocks are movably clamped inside the card slots on the same side. The cross-section of the card slot is hemispherical, and the end of the clamping block is also hemispherical.

[0009] Preferably, on both sides of the push rod, there is a row of tooth grooves opened. Each tooth groove is V-shaped, and each tooth groove includes a vertical wall and an inclined wall;

[0010] When the push rod pulls the piston rod to inject anesthetic and moves, the clamping block slides along the inclined wall;

[0011] When the push rod pushes the piston rod to move, the clamping block abuts against the vertical wall, and the second slider slides along with the push rod. In this way, the second support rod slides reversely relative to the first support rod, and then the syringe barrel and the piston rod move synchronously.

[0012] Preferably, on both sides of the push rod on the side wall of the first support rod, there are two ejector rods fixed. On the side wall of the pressing block, there is a through hole opened. On the side wall of the through hole, there is a slope provided. The ejector rod is movably pressed against the side wall of the slope.

[0013] Preferably, on the side wall of the second support rod, there are a plurality of C-shaped clamps fixedly connected. Inside the syringe barrel, there are a plurality of clamp grooves opened. The clamps are movably clamped inside the clamp grooves.

[0014] Preferably, on the first support rod, there is a rotating shaft provided. The rotating shaft is rotatably connected to the base. On the rotating shaft, there is a toothed plate fixedly connected. Inside the base, there is a worm rotatably connected. The worm is meshed and connected with the toothed plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: After the airbag is inflated, through the biting action of the abutting rod and the annular groove, it is ensured that the piston rod can only push the anesthetic injection under normal resistance conditions, effectively preventing sudden situations such as the displacement of the puncture needle or the puncture of blood vessels caused by the accidental movement of the patient; Secondly, the pressure sensor monitors the injection resistance in real time and feeds it back to the controller to form a closed-loop control mechanism. When a sudden change in resistance is detected, the system automatically cuts off the air supply of the air pump, deflates the airbag and releases the abutting state, so as to immediately stop the drug injection and avoid tissue damage caused by over-injection or extravasation of the liquid medicine. It not only reduces the risk of medical operations, but also realizes precise control of the injection process through intelligent sensing, providing a higher level of safety guarantee for clinical anesthesia. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0017] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 ;

[0018] Figure 3 is an exploded view of the second support rod and the syringe of the present invention;

[0019] Figure 4 is a sectional exploded view of the base, the toothed plate and the worm of the present invention;

[0020] Figure 5 is a sectional exploded view of the injection head, the elastic pressing film and the first pipeline of the present invention;

[0021] Figure 6 is an exploded view of the syringe barrel, the push rod, the connecting plate and the airbag of the present invention;

[0022] Figure 7 is an exploded view of the first support rod and the second support rod of the present invention;

[0023] Figure 8 is a sectional exploded view of the first support rod, the second support rod and the push rod of the present invention;

[0024] Figure 9 is a sectional view of the second slider and the pressing block of the present invention;

[0025] Figure 10 is a section of the second slider, the pressing block and the push rod of the present invention Figure 1 ;

[0026] Figure 11 is a section of the second slider, the pressing block and the push rod of the present invention Figure 2 ;

[0027] Figure 12 For the present invention Figure 11 Enlarged view of location A of

[0028] In the figure: 1, base; 2, first support rod; 201, first slider; 202, first chute; 3, second support rod; 301, second slider; 302, second chute; 4, syringe; 401, syringe barrel; 4011, hoop groove; 402, injection head; 4021, pressure measurement hole; 403, piston rod; 4031, annular groove; 5, first electric push rod; 6, push-pull rod; 601, connecting plate; 602, card slot; 603, tooth groove; 6031, vertical wall; 6032, inclined wall; 7, monitoring box; 8, induction box; 801, first pipeline; 9, pressure sensor; 10, elastic membrane; 11, airbag; 12, pressing rod; 13, air pump; 1301, second pipeline; 14, second electric push rod; 15, baffle; 16, spring; 17, pressing block; 1701, clamping block; 1702, through hole; 1703, slope; 18, ejector rod; 19, clamp; 20, rotating shaft; 21, toothed plate; 22, worm. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 - 12 , the present invention provides a technical solution: an anesthesia system for brachial plexus, including a base 1, a first support rod 2 is arranged on the base 1, a second support rod 3 is slidably connected to the first support rod 2 along the length direction of the first support rod 2, a syringe 4 is clamped on the second support rod 3, the syringe 4 includes a syringe barrel 401, an injection head 402 and a piston rod 403, and a puncture needle for piercing into the human body is connected to the front end of the injection head 402. A push-pull rod 6 for driving the second support rod 4 and the piston rod 403 to slide is slidably connected to the first support rod 2 through a first electric push rod 5. The first electric push rod 5 is fixedly installed on the first support rod 2, and the output shaft of the first electric push rod 5 is connected to the push-pull rod 6. When the first electric push rod 5 is started, the output shaft of the first electric push rod 5 drives the push-pull rod 6 to slide along the length direction of the first support rod 2;

[0031] A monitoring box 7 is provided on the side wall of the base 1. An induction box 8 is provided inside the monitoring box 7. A first pipe 801 is provided on the induction box 8, and a pressure sensor 9 is provided on the side wall of the induction box 8. A pressure measurement hole 4021 is provided on one side of the injection head 402. A deformable elastic pressure film 10 is provided between the pressure measurement hole 4021 and the first pipe 801. As Figure 5 shown, one end of the first pipe 801 away from the induction box 8 is meshed and connected to the pressure measurement hole 4021. The outer side edge of the elastic pressure film 10 is pressed and fixed between the first pipe 801 and the pressure measurement hole 4021, sealing and separating the pressure measurement hole 4021 and the first pipe 801, thereby preventing the anesthetic in the syringe 4 from overflowing into the interior of the first pipe 801. When the piston rod 403 pushes the anesthetic in the syringe barrel 401 forward, the anesthetic is injected. During the injection process, the anesthetic will generate a certain pressure, and the generated pressure acts on the elastic pressure film 10, causing the elastic pressure film 10 to deform towards the first pipe 801. In this way, the pressure in the induction box 8 changes;

[0032] The induction box 8 is provided with an inner cavity. The first pipe 801 communicates with the inner cavity of the induction box 8, and the pressure measurement probe of the pressure sensor 9 extends into the interior of the induction box 8, so that the pressure sensor 9 can detect the pressure in the inner cavity of the induction box 8 in real time;

[0033] An air pump 13 is provided inside the monitoring box 7. A controller is also provided on the monitoring box 7. The controller is electrically connected to the air pump 13 and the pressure sensor 9. A connecting plate 601 is provided at the end of the push rod 6. An annular airbag 11 is provided on the connecting plate 601. The airbag 11 is connected to the air outlet of the air pump 13 through a second pipe 1301. The airbag 11 is sleeved on the piston rod 403, and a plurality of abutting rods 12 are evenly distributed on the inner wall of the airbag 11. A ring groove 4031 is provided on the side wall of the piston rod 403. When the airbag 11 is inflated, the airbag 11 bulges and makes the plurality of abutting rods 12 abut against the inside of the ring groove 4031.

[0034] Working process:

[0035] Install the syringe 4 on the second support rod 3, sleeve the airbag 11 on the connecting plate 601 on the piston rod 403, align the abutting rods 12 on the airbag 11 with the ring groove 4031, and connect the first pipe 801 to the pressure measurement hole 4021 of the injection head 402;

[0036] Use the air pump 13 to inject gas into the airbag 11 through the second pipe 1301. After the airbag 11 is inflated, the abutting rods 12 are pressed into the inside of the ring groove 4031 by the airbag 11. At this time, when the push rod 6 pulls the connecting plate 601 to slide, the movable rod 403 pushes the anesthetic forward to perform the operation of injecting the anesthetic;

[0037] The pressure sensor 9 detects the pressure of the anesthetic in the syringe barrel 401. The pressure sensor 9 feeds back the sensed pressure (i.e., injection resistance) to the controller in real time. The controller controls the operation of the air pump 13 based on the fed-back pressure information to keep the airbag 11 in a propped-up state. When the resistance is stable, it indicates that the anesthetic drug is being normally injected into the body. When the pressure sensor 9 senses a sudden change in resistance (for example, when injecting anesthetic, the patient moves accidentally and the puncture needle displaces and pierces a blood vessel), the pressure wheel sensor 9 feeds back the sudden change signal to the controller. At this time, the controller controls the air pump 13 to stop operating through the fed-back information. At this time, the gas inside the airbag 11 is discharged. At this time, the pressing rod 12 disengages from the annular groove 4031. In this way, even when the first electric push rod 5 continues to drive the push rod 6 to slide, the piston rod 403 will stop injecting the anesthetic drug into the human body, thus avoiding causing additional harm to the patient during the injection process.

[0038] As Figure 7 shown in Figure 8 order to enable the second support rod 3 to slide along the length direction of the first support rod 2,

[0039] Specifically, one end of the first support rod 2 is fixed with a first slider 201, and the other end is provided with a first chute 202. One end of the second support rod 3 is provided with a second slider 301 fixed thereto, and the other end is provided with a second chute 302. The first slider 201 is slidably connected inside the second chute 302, and the second slider 301 is slidably connected inside the first chute 202.

[0040] When the second support rod 3 slides relative to the first support rod 2, the first slider 201 slides inside the second chute 302, and the second slider 301 slides inside the first chute 202, thereby being able to limit the sliding of the second support rod 3 and ensuring the stable sliding of the second support rod 3. The sliding of the second support rod 3 can drive the syringe 4 to move towards or away from the human body, thereby realizing the puncture operation;

[0041] The length of the second chute 302 is the same as the length of the movement of the syringe 4 during puncture. Therefore, with the cooperation of the second chute 302 and the first slider 201, the puncture depth can be controlled;

[0042] In addition, as Figure 8 shown, a second electric push rod 14 is arranged inside the second support rod 3. The end of the output shaft of the second electric push rod 14 is provided with a baffle 15. The baffle 15 is slidably connected inside the second chute 302. According to the different positions of the baffle 15 inside the second chute 302, the puncture depth can be adjusted.

[0043] As Figures 6 - 11As shown, when the second support rod 3 slides relative to the first support rod 2, in order to enable the sliding of the push-pull rod 6 to drive the sliding of the syringe barrel 401 and the piston rod 403 for puncture and injection operations. Specifically, the second slider 301 is slidably sleeved on the push-pull rod 6, and on both sides of the push-pull rod 6 on the second slider 301, there are pressing blocks 17 slidably connected by springs 16. At one end of the two pressing blocks 17 close to the push-pull rod 6, there are clamping blocks 1701. On both sides of the push-pull rod 6, there are card slots 602 opened. The clamping blocks 1701 are movably clamped inside the card slots 602 on the same side. The cross-section of the card slot 602 is hemispherical, and the end of the clamping block 1701 is also hemispherical;

[0044] When the clamping block 1701 is clamped inside the card slot 602 through the spring 16, when the first electric push rod 5 drives the push-pull rod 6 to slide, while the push-pull rod 6 drives the piston rod 403 to slide through the connecting plate 601, it also drives the second slider 301 to slide inside the first chute 202 through the clamping action between the clamping block 1701 and the card slot 602, that is, drives the second support rod 3 to slide relative to the first support rod 2, realizing the synchronous sliding of the syringe barrel 401 and the piston rod 403, and at this time, the puncture operation is realized; during the puncture process, when the first slider 201 slides to abut against the baffle 15, the syringe barrel 401 and the second support rod 3 stop moving relative to the first support rod 2, that is, the puncture operation ends. Continuing to make the first electric push rod 5 drive the push-pull rod 6 to slide, when the sliding force of the push-pull rod 6 is greater than the elastic force of the spring 16, the clamping block 1701 disengages from the card slot 602. In this way, the push-pull rod 6 will drive the piston rod 403 to slide alone through the connecting plate 601, thereby performing the drug injection operation.

[0045] As Figures 6 - 12 shown, in order to be able to pull out the puncture needle from the human body after the anesthesia technique. Specifically, on both sides of the push-pull rod 6, there is a row of tooth grooves 603 opened. Each tooth groove 603 is V-shaped, and each tooth groove 603 includes a vertical wall 6031 and an inclined wall 6032;

[0046] When the push-pull rod 6 pulls the piston rod 403 to inject anesthetic and moves, the clamping block 1701 slides along the inclined wall 6032;

[0047] When the push-pull rod 6 pushes the piston rod 403 to move, the clamping block 1701 abuts against the vertical wall 6031, and the second slider 301 slides along with the push-pull rod 6. In this way, the second support rod 3 slides in the opposite direction relative to the first support rod 201, and then makes the syringe barrel 401 and the piston rod 403 move synchronously.

[0048] As Figures 6 - 12As shown, during the reset process, in order to enable the latch 1701 to be latched inside the slot 602 again. Specifically, two ejector rods 18 are fixed on both sides of the push-pull rod 6 on the side wall of the first support rod 2. A through hole 1702 is formed on the side wall of the pressing block 17, and a ramp 1703 is arranged on the side wall of the through hole 1702. The ejector rod 18 is movably pressed against the side wall of the ramp 1703.

[0049] When the puncture and injection of anesthetic are completed, the latch 1701 will abut against a tooth groove 603. At this time, the push-pull rod 6 can synchronously drive the syringe barrel 401 and the piston rod 403 to reset, that is, the second slider 301 moves towards the ejector rod 18. Finally, the ejector rod 18 is inserted into the through hole 1702 (the width of the through hole 1702 is greater than the thickness of the ejector rod 18), and by pressing the ramp 1703, the pressing block 17 is forced to slide by compressing the spring 16. In this way, the latch 1701 will disengage from the inside of the tooth groove 603. As the push-pull rod 6 continues to slide, the slot 403 is aligned with the latch 1701. At this time, the latch 1701 will be latched inside the slot 602 again, thus completing the reset operation.

[0050] As Figures 1 - 3 shown, in order to fix the syringe 4 on the second support rod 3. Specifically, a plurality of C-shaped clamps 19 are fixedly connected to the side wall of the second support rod 3. A plurality of clamp grooves 4011 are formed inside the syringe barrel 401. The clamp 19 is movably latched inside the clamp groove 4011.

[0051] As Figure 4 shown, in order to adjust the puncture angle of the syringe 4. Specifically, a rotating shaft 20 is arranged on the first support rod 2. The rotating shaft 20 is rotatably connected to the base 1. A toothed plate 21 is fixedly connected to the rotating shaft 20. A worm 22 is rotatably connected inside the base 1. The worm 22 is meshed with the toothed plate 21.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anesthesia system for brachial plexus, comprising a base (1), wherein a first support rod (2) is arranged on the base (1), a second support rod (3) is slidably connected to the first support rod (2) along the length direction of the first support rod (2), a syringe (4) is clamped on the second support rod (3), and the syringe (4) comprises a syringe barrel (401), an injection head (402) and a piston rod (403), characterized in that: The first support rod (2) is slidably connected to a push-pull rod (6) for driving the second support rod (4) and the piston rod (403) to slide via a first electric push rod (5); A monitoring box (7) is arranged on the side wall of the base (1), a sensing box (8) is arranged inside the monitoring box (7), a first pipe (801) is arranged on the sensing box (8), and a pressure sensor (9) is arranged on the side wall of the sensing box (8); a pressure measuring hole (4021) is arranged on one side of the injection head (402), and a deformable elastic pressure membrane (10) is arranged between the pressure measuring hole (4021) and the first pipe (801); An air pump (13) is arranged inside the monitoring box (7), a connecting plate (601) is arranged at the end of the push-pull rod (6), an annular air bag (11) is provided on the connecting plate (601), the air bag (11) and the air outlet of the air pump (13) are connected via a second pipe (1301), the air bag (11) is sleeved on the piston rod (403), and a plurality of abutting rods (12) are evenly distributed on the inner wall of the air bag (11), an annular groove (4031) is provided on the side wall of the piston rod (403), and when the air bag (11) is inflated, the air bag (11) bulges so that the plurality of abutting rods (12) abut against the inside of the annular groove (4031).

2. An anesthesia system for brachial plexus according to claim 1, characterized in that: A first slider (201) is fixed to one end of the first support rod (2), and a first slide groove (202) is provided at the other end; a second slider (301) is fixed to one end of the second support rod (3), and a second slide groove (302) is provided at the other end; the first slider (201) is slidably connected to the inside of the second slide groove (302), and the second slider (301) is slidably connected to the inside of the first slide groove (202).

3. An anesthesia system for brachial plexus according to claim 2, characterized in that: The second slider (301) is slidably sleeved on the push-pull rod (6), and the second slider (301) is slidably connected to a push-pull block (17) on both sides of the push-pull rod (6) through a spring (16), and a clamping block (1701) is provided at one end of the two push-pull blocks (17) close to the push-pull rod (6), and a clamping groove (602) is provided on both sides of the push-pull rod (6), and the clamping block (1701) is movably clamped in the inside of the clamping groove (602) on the same side.

4. The anesthesia system for brachial plexus according to claim 3, characterized in that: A row of tooth grooves (603) are provided on both sides of the push-pull rod (6), each tooth groove (603) is V-shaped, and each tooth groove (603) includes a vertical wall (6031) and an inclined wall (6032); When the push-pull rod (6) pulls the piston rod (403) to inject anesthetic, the block (1701) slides along the inclined wall (6032); When the push-pull rod (6) pushes the piston rod (403) to move, the clamping block (1701) abuts against the vertical wall (6031), so that the injection cylinder (401) and the piston rod (403) move synchronously.

5. The anesthesia system for brachial plexus according to claim 4, characterized in that: Two push rods (18) are fixed on the side walls of the first support rod (2) and on both sides of the push-pull rod (6); a through hole (1702) is opened on the side wall of the push block (17); a slope (1703) is arranged on the side wall of the through hole (1702); and the push rod (18) is movably pressed on the side wall of the slope (1703).

6. The anesthesia system for brachial plexus according to claim 1, characterized in that: A plurality of C-shaped clamps (19) are fixedly connected to the side wall of the second support rod (3), a plurality of clamp grooves (4011) are provided inside the injection cylinder (401), and the clamps (19) are movably clamped inside the clamp grooves (4011).

7. The anesthesia system for brachial plexus according to claim 1, characterized in that: The first support rod (2) is provided with a rotating shaft (20), the rotating shaft (20) is rotatably connected to the base (1), a toothed plate (21) is fixedly connected to the rotating shaft (20), a worm (22) is rotatably connected inside the base (1), and the worm (22) is meshingly connected to the toothed plate (21).

Images