WO2018113617A1

WO2018113617A1 - Nerve block injection device

Info

Publication number: WO2018113617A1
Application number: PCT/CN2017/116830
Authority: WO
Inventors: 杨豪
Original assignee: 杨豪
Priority date: 2016-12-19
Filing date: 2017-12-18
Publication date: 2018-06-28
Also published as: CN206613020U

Abstract

Disclosed is a nerve block injection device, comprising a housing (100), a linear driving device (200), a first clamping claw (300) for grasping a syringe (510), a second clamping claw (400) for driving the motion of a piston inside the syringe (510), and a remote control device for controlling a movement direction of the second clamping claw (400). The housing (100) is provided with a sliding groove (110); the first clamping claw (300) is fixedly arranged on the housing (100); the second clamping claw (400) is slidably arranged on the sliding groove; the linear driving device (200) is arranged inside the housing (100) and is in a driving connection with the second clamping claw (400); and the remote control device is in a signal connection with the linear driving device (200) so as to assist in an injection or retraction operation. The device further comprises a pressure buffering device (530) for buffering instantaneous pressure during injection, and a pressure sensor detects, in real time, an injection pressure at the same time.

Description

Nerve block injection device

Technical field

The utility model relates to a medical device, in particular to a nerve block injection device.

Background technique

Nerve block anesthesia is a commonly used anesthesia method in clinical practice. It has the advantages of high safety, patient awake, less complications, and little impact on the patient's physiological function. Traditional nerve block is based on the anatomical location of the body surface to determine the puncture point, the anesthetic effect is very uncertain, and some deep nerve block effects are usually poor, which greatly limits the promotion of this anesthesia. However, with the development of neurostimulators and B-ultrasound technology, visual nerve block anesthesia techniques have emerged through the use of neurostimulators and B-ultrasounds. The nerve stimulator uses an electric stimulator to generate a pulsed current and transmits it to the puncture needle. When the puncture needle approaches the mixed nerve, it causes depolarization of the mixed nerve, and the motor nerve is more susceptible to depolarization and the muscle tremor is dominated. It can be located by the muscle fibrillation reaction, and it is not necessary to detect the abnormality by contacting the nerve with the puncture needle.

However, the use of neurostimulators and B-ultrasounds also poses a problem - the operation requires an anesthesiologist and a nurse to work together to complete the anesthesiologist's control of the needle and nerve stimulator or the puncture needle and the B-ultrasound probe. The nurse controls the syringe for injection or withdrawal, which is what the original single person can easily complete.

Utility model content

In view of the defects in the prior art, the utility model provides a nerve block injection device, which assists an anesthesiologist in controlling the injection or withdrawal of a medicament, and simplifies the operation, and only needs one person to complete the visual nerve block anesthesia, thereby saving manpower.

The nerve block injection device provided by the utility model comprises: a housing, a linear driving device, a first claw for grasping the syringe, a second claw for driving the piston in the syringe, and a control base a remote control device for moving the second claw; the housing is provided with a sliding slot, the first claw is fixedly disposed on the housing, and the second claw is slidably disposed on the sliding slot The linear driving device is disposed in the housing and is drivingly connected to the second claw, and the remote control device is in signal connection with the linear driving device.

Further, the remote control device includes a first button for controlling forward movement of the linear drive device and a second button for controlling return movement of the linear drive device.

Further, the remote control device is disposed on the puncture needle.

Further, the remote control device is disposed on the B-ultrasound probe.

Further, the remote control device is disposed adjacent to a controller of the neurostimulator.

Further, the remote control device is disposed on the bottom plate and includes a first pedal for controlling the forward movement of the linear driving device and a second pedal for controlling the return movement of the linear driving device.

Further, the remote control device is wirelessly connected to the linear drive device.

Further, a pressure buffering device is further included, one end of the pressure buffering device is fixedly connected to one end of the piston outside the barrel, and the other end of the pressure buffering device is fixed with a pushing rod, and the second claw grips the pushing rod.

Further, the pressure buffer device includes a buffer body provided with a through hole, and one end of the piston outside the barrel is fixedly connected to one end of the buffer body through hole, and a buffer spring is fixed on an end surface of the piston, and the buffer The spring is located in the through hole, and the other end of the buffer spring is fixedly connected to the push rod.

Further, the nerve block injection device further includes: a pressure sensor for measuring an injection pressure, and a buzzer that performs an alarm when the injection pressure exceeds a set threshold, the pressure sensor being connected to the buzzer signal .

Compared with the prior art, the utility model has the following advantages:

The nerve block injection device provided by the utility model comprises a linear driving device, a first claw and a second claw. In operation, the first claw fixes the syringe, the second claw grips the piston, and the second claw drives the second claw to slide along the sliding slot; wherein the linear driving device is connected with a remote control device, and the operator can control through the remote control device The linear drive operates in the forward or reverse direction to perform injection or withdrawal. During anesthesia, the anesthesiologist pre-positions the remote control device near the operating table, or the remote control device can be placed in an easy-to-operate position such as a puncture needle, accurately positioned by a nerve stimulator or B-ultrasound, and the puncture needle is inserted into the positioning position. Then, the remote control device can be operated with one hand to perform injection or withdrawal, and only one person can complete the visual nerve block anesthesia, saving manpower.

The utility model provides a pressure buffer device between the piston and the push rod, so that the pressure buffer device can effectively reduce the instantaneous pressure when the syringe is injected, and the pressure of the actual injection can be injected into the medicine just by the pressure buffer device. The minimum pressure is close, and the state of injection is maintained at the minimum injection pressure, so that the nerve damage caused by the injection of anesthetic can be reduced as much as possible, and the pressure sensor can also detect the injection pressure in real time.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the specific embodiments or the description of the prior art will be briefly described below. In all the figures, like elements or parts are generally identified by like reference numerals. In the figures, elements or parts are not necessarily drawn to scale.

1 is a schematic structural view of a nerve block injection device according to an embodiment;

2 is a schematic structural view of a linear driving device in a nerve block injection device according to an embodiment;

FIG. 3 is a schematic structural diagram of a remote control device according to an embodiment.

4 is a schematic structural view of a pressure buffer device according to an embodiment.

detailed description

The embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and therefore are only examples, and are not intended to limit the scope of the present invention.

It should be noted that the technical terms or scientific terms used herein should be used in the ordinary meaning as understood by those skilled in the art to which the present invention belongs, unless otherwise stated.

Referring to FIG. 1 and FIG. 2, in an embodiment, the nerve block injection device provided by the present invention comprises: a housing 100, a linear driving device 200, a first claw 300 for grasping the syringe 510, and is used for driving a second claw 400 in which the piston 520 operates in the syringe 510, and a remote control device for controlling the moving direction of the second claw 400; the housing 100 is provided with a chute 110, the first claw 300 Fixedly disposed on the housing 100, the second claw 400 is slidably disposed on the sliding slot 110, the linear driving device 200 is disposed in the housing 100, and the second clamping jaw A 400 drive connection is provided, and the remote control device is in signal connection with the linear drive device 200.

The nerve block injection device provided by the present invention comprises a linear drive device 200, a first jaw 300 and a second jaw 400. In operation, the first jaw 300 fixes the syringe 510, the second jaw 400 grasps the piston 520, and drives the second jaw 400 to slide along the sliding slot 110 through the linear driving device 200; wherein the linear driving device 200 is signally connected with the remote control device The operator can control the forward motion or the reverse motion of the linear driving device 200 by the remote control device to perform injection or withdrawal. During anesthesia, the anesthesiologist pre-positions the remote control device near the operating table, or the remote control device can be placed in an easy-to-operate position such as the puncture needle 600, and is accurately positioned by the nerve stimulator or B-ultrasound, and the puncture needle 600 is inserted. The positioning device can then operate the remote control device with one hand to perform injection or withdrawal, and only one person can complete the visual nerve block anesthesia, saving manpower.

Specifically, in the embodiment, the linear driving device 200 includes a motor 210, a lead screw 220, and a nut 230 disposed on the lead screw 220. The output shaft of the motor 210 is drivingly connected to the lead screw 220, and the driving screw 220 is rotated. Connected to the second claw 400, the screw 220 rotates to drive the nut 230 to extend the screw 220 to perform linear motion. Of course, the linear driving device 200 is not limited to the above-described form, and may be other mechanisms that can provide linear motion such as the linear motor 210 or the rack and pinion.

The remote control device includes a first button 710 for controlling forward movement of the linear drive device 200 and a second button 720 for controlling return movement of the linear drive device 200. In the embodiment, when the linear driving device 200 moves in the forward direction, the second claw 400 moves closer to the second claw 400, and the first button 710 is pressed, and the second claw 400 moves closer to the first claw 300, thereby The piston 520 is pushed into the syringe 510 to perform an injection; when the second button 720 is pressed, the second jaw 400 is reversely operated to perform the withdrawal. The first claws 300 of the present embodiment are two first clamping plates 310, which are fixed by the clamping plate clamping cylinder 510. The second clamping claws 400 are two second clamping plates 410 arranged along the length direction of the piston 520, through two The second jaw 410 clamps the flange of the end of the piston 520 for fixation.

In the embodiment, the remote control device is preferably disposed on the puncture needle 600 and wirelessly connected to the linear drive device 200, specifically, the first button 710 and the second button 720 disposed on the puncture needle 600. The operator can operate the remote control device at any time while operating the puncture needle 600, and is convenient to operate. It should be understood that in other embodiments, the remote control device and the linear drive device 200 may also be wired directly.

In other embodiments, the remote control device can also be in the following forms:

1. The remote control device is disposed on the B-ultrasound probe;

2. The remote control device is disposed near a controller of the nerve stimulator;

3. As shown in FIG. 3, the remote control device is disposed on the bottom plate, and includes a first pedal 711 for controlling the forward movement of the linear driving device 200 and a second control for controlling the return motion of the linear driving device 200. The second pedal 721 is controlled by a pedaling motion.

Further, referring to FIG. 4, the present invention further includes a pressure buffering device 530. The pressure buffering device 530 includes a buffer body 531 provided with a through hole, and the piston 520 is located at one end of the outer cylinder and the end of the buffer body 531 is provided with a through hole. A fixed connection is provided, and a buffer spring 532 is fixed on the end surface of the piston 520. The buffer spring 532 is located in the through hole, and the other end of the buffer spring 532 is fixedly connected with the push rod 533. The two second clamping plates 410 will push the rod 533. The flange at the end is clamped and fixed. The utility model is provided with a pressure buffering device between the piston and the pushing mechanism, so that the pressure buffering device can effectively reduce the instantaneous pressure when the syringe is injected, and the pressure of the actual injection can be injected into the medicine just by the pressure buffering device. The minimum pressure is close, and the state of injection is maintained at the minimum injection pressure, and the pressure sensor can also detect the injection pressure in real time, so as to minimize the damage caused by the injection of anesthetic.

Further, in the embodiment, the nerve block injection device further includes: a pressure sensor 420 for measuring an injection pressure, and a buzzer that performs an alarm when the injection pressure exceeds a set threshold, the pressure sensor 420 Connected to the buzzer signal. The pressure sensor 420 is disposed between the buffer spring and the end surface of the piston. When measuring the injection, the buffer spring can buffer the thrust of the second clamping plate 410 against the piston 520 to avoid excessive injection pressure, and the piston 520 is further passed through the second clamping plate 410. The thrust, combined with the size of the syringe 510, translates the thrust into injection pressure. When the nerve block is injected, the pressure of the anesthetic is too large to damage the nerve. Generally, the injection pressure is less than 100 kPa, and the nerve damage is relatively small. Therefore, in this embodiment, a pressure sensor 420 for measuring the injection pressure and a buzzer for alarming are provided. If the injection pressure reaches 100 kPa, an alarm is issued by the buzzer to remind the anesthesiologist that there is a risk of nerve damage, and the anesthesiologist Depending on the situation, decide whether to continue the injection or adjust the position before injecting.

Here, it is to be noted that the functions, algorithms, methods and the like involved in the present invention are merely conventional adaptive applications of the prior art. For example, a signal is sent by a remote control device to control the direction of movement of the linear drive, and an injection pressure is obtained by the pressure sensor, and when the pressure threshold is exceeded, an alarm is given by the buzzer.

Therefore, the improvement of the prior art of the present invention lies in the connection relationship between hardwares, not the functions, algorithms, and methods themselves, that is, although the utility model relates to a certain function, algorithm, and method, it does not include Improvements in functions, algorithms, and methods themselves. The description of the functions, algorithms, and methods of the present invention is for better description of the present invention in order to better understand the present invention.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "inside", "outside", etc. are understood. The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and the simplified description, and does not indicate or imply that the device or component referred to has a specific orientation and a specific orientation. Construction and operation are therefore not to be construed as limiting the invention.

Moreover, the terms "first", "second", and the like are used for the purpose of description only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined.

In the description of the present invention, numerous specific details are described. However, it is understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of the description.

In the description of the specification, specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the essence of the corresponding technical solutions. The scope of the technical solutions is intended to be included within the scope of the claims and the description of the invention.

Claims

A nerve block injection device, comprising: a housing, a linear drive device, a first jaw for gripping the syringe, a second jaw for driving the piston in the syringe, and for controlling a remote control device for moving the second claw; the housing is provided with a sliding slot, the first claw is fixedly disposed on the housing, and the second claw is slidably disposed in the sliding slot The linear driving device is disposed in the housing and is drivingly connected to the second claw, and the remote control device is in signal connection with the linear driving device.
The nerve block injection device according to claim 1, wherein said remote control device includes a first button for controlling forward movement of said linear drive device and a control for returning movement of said linear drive device The second button.
The nerve block injection device according to claim 2, wherein the remote control device is disposed on the puncture needle.
The nerve block injection device according to claim 2, wherein the remote control device is disposed on the B-ultrasound probe.
The nerve block injection device according to claim 2, wherein the remote control device is disposed near a controller of the nerve stimulator.
The nerve block injection device according to claim 1, wherein said remote control device is disposed on a bottom plate, including a first pedal for controlling forward movement of said linear drive device and for controlling said linear drive The device returns to the second pedal of motion.
The nerve block injection device according to claim 1, wherein said remote control device is wirelessly connected to said linear drive device.
The nerve block injection device according to claim 1, further comprising a pressure buffering device, wherein one end of the pressure buffering device is fixedly connected to one end of the piston outside the barrel, and the other end of the pressure buffering device is fixedly pushed. a rod, the second jaw gripping the push rod.
The nerve block injection device according to claim 8, wherein the pressure buffering device comprises a buffer body provided with a through hole, and an end of the piston outside the barrel is fixedly connected to one end of the buffer body through hole. At the same time, a buffer spring is fixed on the end surface of the piston, and the buffer spring is located in the through hole, and the other end of the buffer spring is fixedly connected with the push rod.
The nerve block injection device according to claim 1, further comprising: a pressure sensor for measuring an injection pressure, and a buzzer for alarming when the injection pressure exceeds a set threshold, the pressure sensor and The buzzer signal is connected.