A controllable injection device for ultrasound-guided nerve block

Abstract

The application discloses a controllable injection equipment for nerve block under ultrasonic guidance in the technical field of medical devices, which comprises a mounting device, a puncture mechanism and an injection mechanism are arranged in the mounting device, the puncture mechanism comprises a puncture tube arranged in a fixed sleeve, a puncture needle is connected to the front end of the puncture tube, a sealing plug is arranged in the puncture needle, a rubber plug is connected to the rear end of the sealing plug and arranged in the puncture tube, the puncture mechanism can avoid the human body tissue from entering the puncture needle and causing blockage in the puncture process, the sealing plug is inserted into the puncture needle, the firmness of the overall structure is improved, the puncture mechanism is not prone to bending or surface depression in the puncture process, the injection efficiency is reduced, and the puncture mechanism can be better inserted when being inserted into the tissue which is strong in toughness or has a slippery surface covered with body fluid.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a controllable injection device for ultrasound-guided nerve block. BACKGROUND

[0002] According to the search, Chinese Patent No. CN202210185214.5 discloses an ultrasound-guided peripheral nerve block puncture auxiliary injection device, which comprises a micro-injection pump, a foot pedal injection switch and a puncture positioner, characterized in that: the micro-injection pump is electrically connected with the foot pedal injection switch; the left segment of the micro-injection pump is provided with a drive box, a drive rod is slidably installed on the drive box, the right segment of the micro-injection pump is provided with an injection fixator, an adapter pipe is connected with a syringe at one end and communicated to a handle at the other end, and the handle is communicated with a puncture needle at the other end; the puncture positioner is provided with a base at the lower end, a support frame is fixedly connected to the base, and a positioning cylinder is hingedly connected to the support frame.

[0003] The above-mentioned device has the beneficial effects that: the present application designs an ultrasound-guided peripheral nerve block puncture auxiliary injection device, which is equipped with a micro-injection pump, can adapt to various types of syringes, and can accurately control the drug dose; the micro-injection pump is provided with a temperature feedback adjustment mechanism, which can raise the temperature to a certain value to meet the drug delivery requirements in special environments; the micro-injection pump is controlled by the puncture doctor through the foot pedal injection switch, the operation is more timely and accurate, and the drug delivery efficiency is improved; the puncture positioner can stabilize the puncture direction and temporarily fix the puncture needle, which facilitates the puncture operation of the doctor and reduces the risk of surgical puncture.

[0004] However, in actual application process, the needle body of the existing injection device is hollow, and human tissues will enter the needle tube during puncture, causing blockage, affecting injection efficiency, and even completely blocking the injection of drugs. At the same time, it is not possible to directly observe whether the needle body is inserted into the blood vessel of the patient, resulting in inaccurate drug injection. Therefore, we propose a controllable injection device for ultrasound-guided nerve block. SUMMARY

[0005] The present application aims to provide a controllable injection device for ultrasound-guided nerve block to solve the problems raised in the background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a controllable injection device for ultrasound-guided nerve block, comprising a mounting device, a puncture mechanism and an injection mechanism are mounted in the mounting device, the puncture mechanism comprises a puncture tube mounted in a fixed sleeve, a puncture needle is connected to the front end of the puncture tube, a sealing plug is inserted in the puncture needle, a rubber plug is connected to the rear end of the sealing plug and inserted in the puncture tube, a gas delivery tube is connected to the hollow rear end of the puncture tube, the gas delivery tube is connected to a negative pressure device, the injection mechanism comprises an injection tube connected to the surface of the puncture tube, a drug storage groove is arranged in the injection tube to store drugs, the surfaces of the puncture tube and the injection tube are both provided with openings and the openings are aligned, the puncture tube and the drug storage groove are communicated, an electromagnetic valve is mounted in the opening on the surface of the injection tube, a pressure sensor is connected to the inner wall of the rear end of the puncture tube, a push rod is inserted in the drug storage groove, and a rubber plug two is connected to the front end of the push rod.

[0007] Preferably, the push rod is arranged in an "L" shape.

[0008] Preferably, a motor is connected to the surface of the fixed sleeve, a control gear is connected to the output shaft of the motor and located in the interior of the fixed sleeve, and a tooth groove is arranged on the surface of the injection tube and matched with the control gear.

[0009] Preferably, limit strips are connected to the surfaces of both sides of the injection tube, limit grooves are arranged in the inner walls of both sides of the fixed sleeve, and the limit grooves are matched with the limit strips.

[0010] Preferably, a bayonet is arranged on the surface of the rubber plug one, and a limit block is connected to the inner wall of the front end of the puncture tube and matched with the bayonet on the surface of the rubber plug one.

[0011] Preferably, a connecting rod is connected to the lower end surface of the fixed sleeve, an upper limit ball is connected to the lower end of the connecting rod, a connecting mechanism is connected to the lower end of the mounting device, the connecting mechanism comprises an upper limit sleeve sleeved on the surface of the upper limit ball, an upper connecting ring plate is connected to the surface of the upper limit sleeve, eight groups of upper connecting electromagnets are mounted on the upper connecting ring plate and arranged in equidistant circumferential distribution, an upper ring plate is connected to the lower end surface of the connecting rod, eight groups of upper electromagnets are connected to the lower end surface of the upper ring plate and arranged in equidistant circumferential distribution, and the eight groups of upper electromagnets and the eight groups of upper connecting electromagnets are one-to-one corresponding.

[0012] Preferably, the lower end surface of the upper limiting sleeve is connected with a connecting column, the lower end of the connecting column is connected with a lower limiting ball, the lower end of the connecting mechanism is connected with a handheld mechanism, the handheld mechanism comprises a lower limiting sleeve sleeved on the surface of the lower limiting ball, the lower end of the lower limiting sleeve is connected with a handheld rod, the lower end surface of the connecting column is connected with a lower connecting ring plate, the lower end surface of the lower connecting ring plate is connected with eight groups of lower connecting electromagnets distributed at equal distances in a circle, the surface of the lower limiting sleeve is connected with a lower ring plate, the upper surface of the lower ring plate is connected with eight groups of lower electromagnets distributed at equal distances in a circle, and the eight groups of lower electromagnets and lower connecting electromagnets correspond to each other.

[0013] Preferably, the upper limiting sleeve covers five-thirds of the surface area of the upper limiting ball, and the lower limiting sleeve covers five-thirds of the surface area of the lower limiting ball.

[0014] Preferably, the puncture tube is transparent.

[0015] Preferably, the number of connecting mechanisms between the installer and the handheld mechanism is at least one.

[0016] Compared with the prior art, the application has the following beneficial effects:

[0017] 1. The structure of the puncture mechanism is arranged, so that the human tissue can be prevented from entering the puncture needle during the puncture process, and the sealing plug is inserted into the puncture needle, thereby increasing the firmness of the overall structure, preventing the puncture mechanism from being bent or the surface from being depressed during the puncture process, reducing the injection efficiency, and better inserting the puncture mechanism when inserting the tissue with high toughness or the surface covered with body fluid.

[0018] 2. The injection mechanism is arranged, the medicine can be injected through the puncture mechanism, the motor can drive the injection mechanism to automatically move, the device can automatically complete the puncture work, the working intensity of medical staff is reduced, the puncture is more accurate, and the injection mechanism is more convenient to inject after the puncture mechanism punctures to the specified position.

[0019] 3. The arrangement of the installer, the connecting mechanism and the handheld mechanism makes the device more convenient for medical staff to hold and operate, does not cause visual obstruction around the puncture mechanism, and the included angle between the installer, the connecting mechanism and the handheld mechanism can be adjusted arbitrarily, so that different angles are formed to puncture, and medical staff are more convenient to operate.

[0020] 4. The number of connecting mechanisms can be increased according to requirements, so that the installer can be adjusted in multiple dimensions, and the applicability is improved. DETAILED DESCRIPTION

[0021] Figure 1Structure diagram of the present application;

[0022] Figure 2 Structure diagram of the present application;

[0023] Figure 3 Structure diagram of the present application;

[0024] Figure 4 Structure diagram of the present application;

[0025] Figure 5 Structure diagram of the present application;

[0026] Figure 6 Structure diagram of the present application;

[0027] Figure 7 Structure diagram of the present application;

[0028] Figure 8 Structure diagram of the present application.

[0029] In the figure: 1, the installer; 101, the fixed sleeve; 102, the connecting rod; 103, the upper limit ball; 104, the upper ring plate; 105, the upper electromagnet; 106, the limit groove; 107, the motor; 108, the control gear; 2, the puncture mechanism; 201, the puncture tube; 202, the puncture needle; 203, the sealing plug; 204, the rubber plug one; 205, the bayonet; 206, the limit block; 207, the pressure sensor; 3, the injection mechanism; 301, the injection tube; 302, the medicine storage groove; 303, the push rod; 304, the rubber plug two; 305, the gear slot; 306, the limit strip; 307, the electromagnetic valve; 4, the gas delivery pipe; 5, the connecting mechanism; 501, the connecting column; 502, the upper limit sleeve; 503, the upper connecting ring plate; 504, the upper connecting electromagnet; 505, the lower limit ball; 506, the lower connecting ring plate; 507, the lower connecting electromagnet; 6, the handheld mechanism; 601, the handheld rod; 602, the lower limit sleeve; 603, the lower ring plate; 604, the lower electromagnet. DETAILED DESCRIPTION

[0030] Example one

[0031] Please refer to Figures 1-8 , the present application provides a technical solution:

[0032] A controllable injection device for ultrasound-guided nerve block, the puncture mechanism 2 and the injection mechanism 3 are fixed on the installer 1, and the installer 1 is connected with the handheld mechanism 6 through the connecting mechanism 5, so that the medical staff can operate the puncture mechanism 2 fixed on the installer 1 to puncture after holding the handheld mechanism 6, and the drug injection is completed through the injection mechanism 3 after the puncture mechanism 2 completes the puncture;

[0033] The puncture mechanism 2 comprises a puncture tube 201 mounted in the fixed sleeve 101, the front end of the puncture tube 201 is connected with a puncture needle 202, so that the puncture needle 202 can puncture and inject medicine, and the inside of the puncture needle 202 is inserted with a sealing plug 203, the inside of the puncture needle 202 is sealed by the sealing plug 203, so that the puncture needle 202 can avoid human tissue entering the inside of the puncture needle 202 during puncture, causing the inside of the puncture needle 202 to be blocked, and further causing the medicine injection to fail;

[0034] At the same time, after the sealing plug 203 is inserted into the puncture needle 202, the puncture needle 202 becomes solid, so that the overall strength of the puncture needle 202 is stronger, and the puncture needle 202 is not easy to bend or surface depression, causing the injection efficiency to decrease, and the puncture mechanism 2 in the puncture process, because the blood vessel has strong toughness and is covered with body fluid, the puncture needle 202 is not easy to pierce, the sealing plug 203 fills the inside, so that the puncture needle 202 is heavier and is more convenient to pierce, improving the use efficiency;

[0035] The rear end of the sealing plug 203 is connected with a rubber plug one 204 inserted in the puncture tube 201, so that the rubber plug one 204 can seal the inside of the puncture tube 201, and the rear end of the puncture tube 201 is hollowly connected with a gas delivery tube 4, which is connected with a negative pressure device, so that after the puncture needle 202 is inserted into the human body, the negative pressure device is opened to generate negative pressure, the rubber plug one 204 is sucked from the front end to the rear end of the puncture tube 201, further making the sealing plug 203 slide out of the puncture needle 202 and into the puncture tube 201, so that the puncture tube 201 and the puncture needle 202 are hollowly connected, thereby realizing communication;

[0036] The injection mechanism 3 comprises an injection tube 301 connected to the surface of the puncture tube 201, and the inside of the injection tube 301 is provided with a medicine storage groove 302, so that the medicine can be stored in the medicine storage groove 302, and the surfaces of the puncture tube 201 and the injection tube 301 are provided with openings and the openings are aligned, so that the medicine storage groove 302 inside the puncture tube 201 and the injection tube 301 can be communicated, and the opening on the surface of the injection tube 301 is mounted with an electromagnetic valve 307, which is used for on-off control of the communication between the inside of the puncture tube 201 and the medicine storage groove 302;

[0037] When the medicine is stored in the medicine storage tank 302, the puncture mechanism 2 is used for puncture, and the sealing plug 203 is inserted into the inside of the puncture needle 202 to avoid the blockage caused by the human tissue. When the puncture needle 202 is inserted into the specified position, the gas pipe 4 is connected to the negative pressure device, so that the negative pressure device generates the adsorption force in the puncture pipe 201. Since the electromagnetic valve 307 is closed at this time, the medicine in the medicine storage tank 302 will not be sucked into the medicine storage tank 302, and the rubber plug one 204 will slide to the rear end of the puncture pipe 201 under the action of the adsorption force, so that the sealing plug 203 is pulled out of the puncture needle 202. During the pulling-out process of the puncture needle 202, if the puncture needle 202 is successfully inserted into the blood vessel, blood will be drawn back. The puncture pipe 201 is set to be transparent, so as to be used for the medical staff to judge whether the puncture needle 202 is inserted into the blood vessel. During the sliding process of the rubber plug one 204, the rubber plug one 204 finally abuts against the pressure sensor 207 connected to the inner wall of the rear end of the puncture pipe 201. When the pressure sensor 207 is triggered, the negative pressure device stops working, and the electromagnetic valve 307 is opened, so that the medicine in the medicine storage tank 302 enters the puncture pipe 201. The push rod 303 is inserted into the inside of the medicine storage tank 302, and the front end of the push rod 303 is connected with the rubber plug two 304. The medical staff can push the rubber plug two 304 forward by pressing the push rod 303, so that the pressure in the puncture pipe 201 is increased, and the medicine in the puncture pipe 201 is further squeezed to be injected through the puncture needle 202.

[0038] The surface of the rubber plug one 204 is provided with the bayonet 205, and the front end inner wall of the puncture pipe 201 is connected with the limiting block 206. The limiting block 206 and the bayonet 205 on the surface of the rubber plug one 204 are matched, so that when the rubber plug one 204 reaches the front end inside of the puncture pipe 201, the rubber plug one 204 is limited by the limiting block 206, and the sealing plug 203 cannot be pulled out of the puncture needle 202.

[0039] The surface of the fixed sleeve 101 is connected with the motor 107, the output shaft of the motor 107 is connected with the control gear 108 located in the inside of the fixed sleeve 101, and the surface of the injection pipe 301 is provided with the tooth groove 305. The control gear 108 and the tooth groove 305 are matched, so that the motor 107 drives the control gear 108 to rotate after being turned on, the control gear 108 meshes with the tooth groove 305 to rotate, the injection mechanism 3 is controlled to slide in the installation device 1, and the puncture mechanism 2 is further driven to automatically insert, so as to realize automatic needle insertion. The surfaces on both sides of the injection pipe 301 are connected with the limiting strips 306, and the inner walls on both sides of the fixed sleeve 101 are provided with the limiting grooves 106. The limiting grooves 106 and the limiting strips 306 are matched, so that the injection pipe 301 slides in the installation device 1 more stably and smoothly.

[0040] The lower end of the installer 1 is connected with a connecting mechanism 5, and a handheld mechanism 6 is connected through the connecting mechanism 5, so that the whole device is in the shape of "T", which is convenient for medical staff to hold and operate, and the medical staff will not block the view around the puncture mechanism 2 during holding, so as to facilitate operation, and during operation, the push rod 303 is arranged in the shape of "L", so that the injection mechanism 3 is more convenient to operate;

[0041] The lower end surface of the fixing sleeve 101 is connected with a connecting rod 102, the lower end of the connecting rod 102 is connected with an upper limiting ball 103, the upper limiting ball 103 is inserted into an upper limiting sleeve 502, so that the upper limiting ball 103 can rotate in any direction in the upper limiting sleeve 502, so that the installer 1 can be adjusted and rotated to any angle when the medical staff holds the handheld mechanism 6, and the surface of the upper limiting sleeve 502 is connected with an upper connecting ring plate 503, eight groups of upper connecting electromagnets 504 are installed on the upper connecting ring plate 503 in equidistant circumferential distribution, and the lower end surface of the connecting rod 102 is connected with an upper ring plate 104, the lower end surface of the upper ring plate 104 is connected with eight groups of upper electromagnets 105 in equidistant circumferential distribution, and the eight groups of upper electromagnets 105 and the eight groups of upper connecting electromagnets 504 correspond to each other, so that the installer 1 can be controlled to rotate on the connecting mechanism 5 through the eight groups of upper electromagnets 105 and the upper connecting electromagnets 504;

[0042] When the installer 1 needs to rotate in a certain direction, only the upper electromagnets 105 and the upper connecting electromagnets 504 in the corresponding direction are turned on to generate mutual adsorption magnetic force, while the upper electromagnets 105 and the upper connecting electromagnets 504 in the opposite direction generate repulsion magnetic force, so as to push the upper limiting ball 103 to rotate in a specific direction in the upper limiting sleeve 502, and the upper electromagnets 105 and the upper connecting electromagnets 504 that interfere with the rotation of the installer 1 will be turned off and will not generate magnetic force;

[0043] The lower end surface of the upper limiting sleeve 502 is connected with a connecting column 501, the lower end of the connecting column 501 is connected with a lower limiting ball 505, the lower limiting ball 505 is inserted into a lower limiting sleeve 602 installed on the upper end of the handheld rod 601, so that the connecting mechanism 5 can rotate on the handheld mechanism 6, and the lower end surface of the connecting column 501 is connected with a lower connecting ring plate 506, the lower end surface of the lower connecting ring plate 506 is connected with eight groups of lower connecting electromagnets 507 in equidistant circumferential distribution, the surface of the lower limiting sleeve 602 is connected with a lower ring plate 603, the upper surface of the lower ring plate 603 is connected with eight groups of lower electromagnets 604 in equidistant circumferential distribution, and the eight groups of lower electromagnets 604 and the eight groups of lower connecting electromagnets 507 correspond to each other, so as to further enable the installer 1 and the handheld mechanism 6 to rotate in two dimensions, thereby improving the convenience of operation of the installer 1;

[0044] And the upper limit sleeve 502 and the lower limit sleeve 602 respectively wrap five-thirds of the surface area of the upper limit ball 103 and the lower limit ball 505, so that the upper limit ball 103 and the lower limit ball 505 will not fall off, and the number of the connecting mechanism 5 can be increased according to the needs, so that the installer 1 can perform multi-dimensional angle adjustment, improve the applicability.

Claims

1. A controllable injection device for ultrasound-guided nerve block comprising a mount (1), characterized in that: The inside of the installation device (1) is internally provided with a puncture mechanism (2) and an injection mechanism (3), the puncture mechanism (2) comprises a puncture tube (201) installed in a fixed sleeve (101), the front end of the puncture tube (201) is connected with a puncture needle (202), the inside of the puncture needle (202) is inserted with a sealing plug (203), the rear end of the sealing plug (203) is connected with a rubber plug I (204) inserted in the puncture tube (201), the rear end of the puncture tube (201) is hollowly connected with a gas delivery tube (4), the gas delivery tube (4) is connected with a negative pressure device, the injection mechanism (3) comprises an injection tube (301) connected on the surface of the puncture tube (201), the inside of the injection tube (301) is provided with a medicine storage groove (302) for storing medicine, the surfaces of the puncture tube (201) and the injection tube (301) are both provided with openings and the openings are aligned, the puncture tube (201) and the medicine storage groove (302) are communicated, the opening in the surface of the injection tube (301) is internally installed with an electromagnetic valve (307), the puncture tube (201) is connected with a pressure sensor (207) on the inner wall of the rear end, the inside of the medicine storage groove (302) is inserted with a push rod (303), the front end of the push rod (303) is connected with a rubber plug II (304). After the puncture needle (202) is inserted into the human body, the negative pressure device is started to generate negative pressure, the rubber plug I (204) is sucked from the front end to the rear end of the puncture tube (201), so that the sealing plug (203) is pulled out from the puncture needle (202) and slides into the puncture tube (201); The lower end surface of the fixed sleeve (101) is connected with a connecting rod (102), the lower end of the connecting rod (102) is connected with an upper limiting ball (103), the lower end of the installation device (1) is connected with a connecting mechanism (5), the connecting mechanism (5) comprises an upper limiting sleeve (502) sleeved on the surface of the upper limiting ball (103). The lower end surface of the upper limiting sleeve (502) is connected with a connecting column (501), the lower end of the connecting column (501) is connected with a lower limiting ball (505), the lower end of the connecting mechanism (5) is connected with a handheld mechanism (6), the handheld mechanism (6) comprises a lower limiting sleeve (602) sleeved on the surface of the lower limiting ball (505), the lower end of the lower limiting sleeve (602) is connected with a handheld rod (601).

2. A controllable injection device for ultrasound-guided nerve block according to claim 1, characterized in that: The push rod (303) is provided in an "L" shape.

3. A controllable injection device for ultrasound-guided nerve block according to claim 1, characterized in that: The surface of the fixed sleeve (101) is connected with a motor (107), the output shaft of the motor (107) is connected with a control gear (108) located in the inside of the fixed sleeve (101), the surface of the injection tube (301) is provided with a gear slot (305), the control gear (108) and the gear slot (305) are matched.

4. A controllable injection device for ultrasound-guided nerve block according to claim 3, characterized in that: The surfaces of the two sides of the injection tube (301) are both connected with limiting strips (306), the two side inner walls of the fixed sleeve (101) are both provided with limiting grooves (106), the limiting grooves (106) and the limiting strips (306) are matched.

5. A controllable injection device for ultrasound-guided nerve block according to claim 1, characterized in that: The surface of the rubber plug one (204) is provided with a bayonet (205), the front end inner wall of the puncture tube (201) is connected with a limiting block (206), the limiting block (206) and the bayonet (205) on the surface of the rubber plug one (204) are matched.

6. A controllable injection device for ultrasound-guided nerve block according to claim 1, characterized in that: The surface of the upper limiting sleeve (502) is connected with an upper connecting ring plate (503), eight groups of upper connecting electromagnets (504) are installed on the upper connecting ring plate (503) and are distributed at equal distances in a circle, the lower end surface of the connecting rod (102) is connected with an upper ring plate (104), the lower end surface of the upper ring plate (104) is connected with eight groups of upper electromagnets (105) which are distributed at equal distances in a circle, and the eight groups of upper electromagnets (105) and the eight groups of upper connecting electromagnets (504) are one-to-one corresponding.

7. A controllable injection device for ultrasound-guided nerve block according to claim 6, characterized in that: The lower end surface of the connecting column (501) is connected with a lower connecting ring plate (506), the lower end surface of the lower connecting ring plate (506) is connected with eight groups of lower connecting electromagnets (507) which are distributed at equal distances in a circle, the surface of the lower limiting sleeve (602) is connected with a lower ring plate (603), the upper surface of the lower ring plate (603) is connected with eight groups of lower electromagnets (604) which are distributed at equal distances in a circle, and the eight groups of lower electromagnets (604) and the eight groups of lower connecting electromagnets (507) are one-to-one corresponding.

8. A controllable injection device for ultrasound-guided nerve block according to claim 7, characterized in that: The upper limiting sleeve (502) covers five-thirds of the surface area of the upper limiting ball (103), and the lower limiting sleeve (602) covers five-thirds of the surface area of the lower limiting ball (505).

9. A controllable injection device for ultrasound-guided nerve block according to claim 1, characterized in that: The puncture tube (201) is provided in a transparent shape.

10. A controllable injection device for ultrasound-guided nerve block according to claim 1, characterized in that: The number of connecting mechanisms (5) between the mounters (1) and the handheld mechanisms (6) is at least one.

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