CN211536016U

CN211536016U - Anesthetic liquid injection device

Info

Publication number: CN211536016U
Application number: CN201922215876.9U
Authority: CN
Inventors: 刘艳; 葛艳霞; 沈琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-09-22
Anticipated expiration: 2029-12-11

Abstract

The utility model relates to an anesthetic liquid injection device, which comprises an injection cylinder, an injection piston and an injection push rod, wherein the injection push rod is a reducing hollow rod, the first end of the injection push rod extends out of the injection cylinder in a movable way, and the second end of the injection push rod is fixed on the injection piston and extends out of the injection piston; the injection barrel comprises a first barrel and a second barrel which are detachably connected with each other; wherein the injection piston is located in the second cylinder. The injection push rod can convey the anesthetic liquid medicine to the lower cavity through a hollow structure in the injection push rod, and due to the reducing structure, the flow speed and the pressure of the anesthetic liquid medicine can change in the flow, and the anesthetic liquid medicine is in a turbulent flow state, so that the liquid medicine of each component is uniformly mixed before entering the lower cavity; after a proper amount of anesthetic liquid is injected into the lower cavity, the injection push rod is pushed to complete injection.

Description

Anesthetic liquid injection device

Technical Field

The utility model relates to the technical field of medical apparatus, in particular to an anesthetic liquid injection device.

Background

Anesthesiology (anesthesiology) is a science that applies basic theory, clinical knowledge and technology about anesthesia to eliminate operation pain of patients, ensure patient safety and create good conditions for operations. Currently, anesthesiology mainly includes clinical anesthesiology, emergency resuscitation medicine, critical care treatment, pain diagnosis and treatment, and other related medicine and mechanism research, and is a comprehensive discipline for researching anesthesia, analgesia, emergency resuscitation and critical medicine. Prior to surgery, medical personnel anesthetize a patient, often by injecting anesthetic solution using an anesthetic device. Research shows that the mixing of different anesthetic liquid medicines directly influences the anesthetic effect.

For example, chinese patent publication No. CN206792755U discloses a novel anesthetic injection device. The device includes the syringe needle, the syringe, the plug, the push rod, the handle, push motor, starting switch, the device host computer, a controller, the dose sets up the knob, the advancing speed sets up the knob, master switch, display and rhythm of the heart detector, the syringe needle sets up the head at the syringe, the handle sets up the afterbody at the syringe, be provided with the liquid measure check on the syringe, the plug sets up middle part in the syringe, push motor sets up in the handle, push rod one end is connected the other end with push motor and is connected with the plug, starting switch sets up on the handle, the device host computer is placed by the syringe, the controller sets up in the device host computer. The novel anesthesia injection device is simple in structure and convenient to operate, and better helps medical staff to perform anesthesia work. The time for injecting the anesthetic liquid medicine is effectively mastered, the comfort of the patient is improved, and the anesthetic effect is well guaranteed. And the quantity of the anesthetic liquid medicine is accurately controlled, so that the physical and psychological health of the patient is well guaranteed, and the smooth operation is also guaranteed.

The technical scheme solves the technical problems of how to quantitatively inject and how to control the injection speed. However, since the anesthetic solution is composed of different components of multiple components, the anesthetic effect is not easily achieved due to the phenomenon of layering between solutions during injection.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an anesthetic liquid injection device. The injection push rod is a variable-diameter hollow rod, the first end of the injection push rod extends out of the injection cylinder in a movable mode, and the second end of the injection push rod is fixed to the injection piston and extends out of the injection piston.

According to a preferred embodiment, the injection barrel comprises a first barrel and a second barrel detachably connected to each other; wherein the injection piston is located in the second barrel.

According to a preferred embodiment, the injection plunger comprises an expanded hollow shaft and/or a reduced hollow shaft

According to a preferred embodiment, the diameter of the expanded hollow shaft is larger than the first port on the syringe barrel for receiving the injection plunger.

According to a preferred embodiment, the second end has a medical fluid outlet with a smaller bore than a second port on the injection piston for receiving the injection plunger.

According to a preferred embodiment, the axial length of the second cylinder is greater than the axial length of the first cylinder.

According to a preferred embodiment, said second barrel is provided with a needle attachment aperture for mounting a needle segment.

According to a preferred embodiment, a rod body of the injection push rod extending out of the injection cylinder body is provided with a liquid medicine inlet for communicating with the metering pump.

According to a preferred embodiment, the second cylinder is provided with graduation marks

According to a preferred embodiment, the utility model discloses an injection push rod, its first end extends out with it complex injection barrel, its second end is fixed in and is located the internal injection piston of injection barrel, injection push rod is the hollow body of rod of part pole section for the reducing, the second end extends injection piston.

Compared with the prior art, the utility model, the injection push rod can be through hollow structure in it carry the anesthesia liquid medicine to cavity down in, because the reducing structure of its setting, the flow velocity and the pressure of anesthesia liquid medicine can change in the flow, and the anesthesia liquid medicine is in turbulent state. Therefore, compared with the prior art, the liquid medicine of each component is relatively more uniformly mixed before entering the lower cavity body in the utility model; after a proper amount of anesthetic liquid is injected into the lower cavity, the injection push rod is pushed to complete injection.

Drawings

Fig. 1 is a schematic structural view of an anesthetic liquid injection device provided by the present invention; and

FIG. 2 is a preferred schematic view of an injection cylinder of an anesthetic liquid medicine injection apparatus provided by the present invention;

FIG. 3 is a schematic view of a preferred structure of the injection plunger provided by the present invention;

FIG. 4 is an enlarged view at B in FIG. 3; and

fig. 5 is an enlarged view at a in fig. 3.

List of reference numerals

100: syringe barrel 300 a: first end

200: injection piston 300 b: second end

300: injection plunger 300 c: liquid medicine inlet

400: tip segment 300 d: expanding hollow rod

100 a: first cylinder 300 e: reducing hollow rod

100 b: second cylinder 300 b-1: liquid medicine outlet

100 a-1: first interface 400 a: needle seat

100 b-1: needle attachment hole 400 b: needle head

200 a: second interface

Detailed Description

This is described in detail below with reference to fig. 1-5.

Example 1

The present embodiment provides an anesthetic liquid injection device. As shown in fig. 1, the injection device includes an injection cylinder 100, an injection piston 200, and an injection plunger 300. The injection piston 200 and the injection cylinder 100 are matched in size and shape, and are used for pushing the anesthetic liquid medicine below the injection piston and located in the injection cylinder 100 to the needle head 400. The needle 400b penetrates into a site of the patient to be injected, and injection of the anesthetic liquid medicine is completed.

In the present invention, as shown in fig. 1, 3 or 4, the injection push rod 300 is a hollow rod with variable diameter. As shown in fig. 1, first end 300a movably extends out of syringe barrel 100. As shown in FIG. 1, a portion of the shaft of the injection plunger 300 matches the shape of the first hub 100a-1 of the injection syringe 100 for accommodating the injection plunger 300, and the diameter of the portion of the shaft of the injection plunger 300 is about 1-2mm smaller than the first hub 100a-1, so that the first end 300a movably extends out of the injection syringe 100 to facilitate the medical staff to push the injection plunger 300. The injection push rod 300 is threadedly coupled to the push hand plate. A second end 300b of the injection plunger 300 is secured to the injection piston 200 and extends out of the injection piston 200. As shown in fig. 1, the injection piston 200 is opened with a second port 200a for fixing the injection plunger 300 to the injection piston 200, and a second end 300b extending out of the injection piston 200 so that the anesthetic liquid can flow into the second cylinder 100b of the injection cylinder 100. Therefore, the injection push rod 300 can convey the anesthetic liquid medicine to the lower cavity through the hollow structure therein, and due to the reducing structure, the flow speed and pressure of the anesthetic liquid medicine can be changed in the flow, and the anesthetic liquid medicine is in a turbulent state, so that the liquid medicines of all components are uniformly mixed before entering the lower cavity. After a proper amount of anesthetic liquid is injected into the lower cavity, the injection push rod 300 is pushed to complete the injection.

Preferably, as shown in FIGS. 1, 3 and 4, the injection plunger 300 includes an enlarged diameter hollow shaft 300d and/or a reduced diameter hollow shaft 300 e. When the anesthetic liquid passes through the enlarged diameter hollow rod 300d, the flow rate thereof is reduced due to the increased cross-sectional area. When the anesthetic liquid passes through the reduced-diameter hollow rod 300e, the flow rate thereof becomes high because the cross-sectional area through which the anesthetic liquid flows becomes small. The flow rate of the anesthetic liquid in the injection plunger 300 is suddenly and slowly changed to be in a turbulent flow state. The injection plunger 300 is integrally formed. The reducing structure shown in the figure is only one of the embodiments formed by the cambered surface structure. The reducing structure can also be a conical or inverted conical structure.

Preferably, the diameter of the enlarged hollow shaft 300d is larger than the first port 100a-1 on the syringe barrel 100 for receiving the injection plunger 300. This configuration limits the upward position of the injection plunger 300.

Preferably, the second end 300b has a medical fluid outlet 300 b-1. As shown in FIGS. 1, 3 or 4, the medical fluid outlet 300b-1 has a smaller diameter than the second port 200a of the injection piston 200 for receiving the injection plunger 300. This mechanism facilitates the installation of the injection plunger 300 by passing the medical fluid outlet 300b-1 through the second port 200a from one side of the injection piston and then out through the other side of the injection piston, thereby reducing the installation resistance between the injection plunger 300 and the injection piston 200.

Example 2

This embodiment may be a further improvement and/or a supplement to embodiment 1, and repeated contents are not described again. The preferred embodiments of the present invention are described in whole and/or in part in the context of other embodiments, which can supplement the present embodiment, without resulting in conflict or inconsistency.

Preferably, injection cartridge 100 includes a first cartridge 100a and a second cartridge 100b removably coupled to each other. For example, the outer wall of the first cylinder 100a is provided with external threads, the inner wall of the second cylinder 100b is provided with internal threads, and the first cylinder 100a and the second cylinder 100b are screwed to form the syringe cylinder 100 b. Wherein injection piston 200 is located within second barrel 100 b. The utility model discloses fasten injection piston 200 and injection push rod 300 earlier, then place injection piston 200 in second barrel 100b, pass first interface 100a-1 on the first barrel 100a with the first end of injection push rod 300 again, then connect first barrel 100a and second barrel 100b, accomplish this injection device's installation.

Preferably, the material of the syringe barrel 100 is transparent silicone grease. The second cylinder 100b is also provided with scale marks having a division value of 1 mm.

The lower half of the second cylinder 100b is an anesthetic liquid storage chamber, and therefore, it is preferable that the second cylinder 100b has an axial length greater than that of the first cylinder 100a so that the second cylinder 100b has a sufficient space to contain liquid.

Preferably, the second cylinder 100b is provided with a needle coupling hole 100b-1 for mounting the needle head 400. The needle attachment hole 100b-1 is a threaded hole. Tip segment 400 includes a tip 400b and a tip seat 400 a. Needle mount 400a is threadably connected to needle attachment bore 100 b-1.

Example 3

This embodiment may be a further improvement and/or a supplement to embodiment 1 and/or 2, and repeated contents are not described again. The preferred embodiments of the present invention are described in whole and/or in part in the context of other embodiments, which can supplement the present embodiment, without resulting in conflict or inconsistency.

Preferably, as shown in fig. 3 or 4, the injection plunger 300 is opened with a medical fluid inlet 300 c. When the anesthetic is to be injected, the outlet line of the metering pump is connected, preferably by screwing, to the liquid inlet 300 c. The liquid inlet pipe of the metering pump is communicated with the liquid medicine tank. The inlet and outlet of the metering pump 8 are connected with the liquid medicine pipe (output pipe and liquid inlet pipe) through screw threads. The metering pump 8 delivers the liquid medicine to the lower chamber through the injection push rod 300. The dosing pump 8 is preferably a galileo mechanical diaphragm dosing pump, such as a galileo mechanical diaphragm dosing pump of the GWA series. In particular, the type of the dosing pump 8 is preferably GWA 005.

Example 4

This embodiment may be a further improvement and/or a supplement to embodiments 1, 2, and/or 3, and repeated details are not repeated. The preferred embodiments of the present invention are described in whole and/or in part in the context of other embodiments, which can supplement the present embodiment, without resulting in conflict or inconsistency.

The present embodiment discloses an injection plunger. First end 300a of injection plunger 300 extends out of the mated syringe barrel 100. Second end 300b of injection plunger 300 is secured to injection piston 200 located within injection cartridge 100. The injection plunger 300 is a hollow rod body having a portion of its rod section with variable diameters. Second end 300b extends out of injection piston 200.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. An anesthetic liquid injection device comprises an injection cylinder (100), an injection piston (200) and an injection push rod (300), and is characterized in that the injection push rod (300) is a variable-diameter hollow rod, a first end (300a) of the injection push rod extends out of the injection cylinder (100) in a movable mode, and a second end (300b) of the injection push rod is fixed to the injection piston (200) and extends out of the injection piston (200).

2. The anesthetic liquid medicine injection device as claimed in claim 1, wherein the injection cylinder (100) includes a first cylinder (100a) and a second cylinder (100b) detachably connected to each other;

wherein the injection piston (200) is located in the second barrel (100 b).

3. Anesthetic liquid injection device according to claim 2, characterized in that the injection plunger (300) comprises an expanded hollow rod (300d) and/or a reduced hollow rod (300 e).

4. An anaesthetic liquid medicine injection device according to claim 3 wherein the diameter of the hollow rod (300d) is larger than the first port (100a-1) on the injection cylinder (100) for receiving the injection plunger (300).

5. The anaesthetic liquid medicine injection device according to claim 4 characterized in that the second end (300b) has a liquid medicine outlet (300b-1), the bore of the liquid medicine outlet (300b-1) being smaller than the second port (200a) on the injection piston (200) for receiving the injection plunger (300).

6. The anesthetic liquid medicine injection device as claimed in claim 5, wherein an axial length of the second cylinder (100b) is larger than an axial length of the first cylinder (100 a).

7. The anesthetic liquid medicine injection device as claimed in claim 6, wherein the second cylinder (100b) is provided with a needle attachment hole (100b-1) for mounting a needle section (400).

8. The anesthetic liquid medicine injection device according to claim 7, characterized in that a liquid medicine inlet (300c) is provided on a rod body of the injection plunger (300) extending out of the injection cylinder (100) for communicating with a metering pump.

9. The anesthetic liquid medicine injection device according to claim 8, characterized in that the second cylinder (100b) is provided with graduation marks.