Injection needle assembly with adjustable injection angle and depthTechnical Field
The invention relates to the field of medical instruments, in particular to an injection needle assembly with adjustable injection angle and depth.
Background
The intradermal injection method is a method of injecting a small amount of a drug or a biological product between epidermis and dermis, and the intradermal injection is a common operation in clinical diagnosis and treatment, also called intradermal sensitivity test, and the intradermal injection of the corresponding drug is required before the patient needs to use antibiotics and some special drugs to eliminate and avoid allergic reactions possibly caused by the infusion of the corresponding drug. When in intradermal injection, the test medicine is required to be injected into the skin, the intradermal layer is positioned between the epidermis and the dermis, and the effect of intradermal injection can be influenced by too shallow and too deep puncture;
the invention discloses an intradermal injection needle assembly with fixed puncture angle and depth, which simplifies the operation process of intradermal injection in the clinical diagnosis and treatment process, precisely fixes the puncture angle and depth, eliminates the pain sense in the intradermal injection process, but meets the requirements of the intradermal injection angle and depth only through a simple mechanical structure, the control of the existing puncture depth is difficult, long-term clinical training is needed, even experienced medical staff is difficult to control the depth during puncture injection, then patients are often caused to have stronger pain sense in the injection process, and patients are often fear, so that the invention provides an injection needle assembly with adjustable injection angle and depth.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the injection needle assembly with adjustable injection angle and depth, the invention meets the requirements of different injection modes on the angle and the depth, the arranged conical sleeving mechanism realizes the disassembly of the needle point, meets the requirements of one needle for one injection and the requirements of the needle for different injection modes during injection, and meets the requirements of different injection by combining the detachable needle point with the second cylinder body with changeable liquid medicine, thereby having wide adaptability.
In order to solve the technical problems, the invention provides the following technical scheme: an injection angle and depth adjustable injection needle assembly comprising
The syringe, the syringe comprises syringe needle section, liquid medicine bolus section, puncture degree of depth control section jointly, just the puncture degree of depth control section is the cavity barrel, be equipped with frame and push rod mechanism in the cavity barrel, just the liquid medicine bolus section comprises first barrel and second barrel, first barrel sliding connection is in the cavity barrel, the second barrel is connected in first barrel inboard, just the syringe needle section is connected with the needle point, needle point one end is connected with first barrel.
Preferably, the needle point is provided with a conical sleeving mechanism, a laser angle measuring mechanism is arranged in the hollow cylinder corresponding to the needle point, one end of the second cylinder is communicated with the needle point in the first cylinder, a one-way valve and a piston are arranged in the second cylinder, and one end, far away from the needle point, of the second cylinder is provided with a ball screw mechanism.
Preferably, an auxiliary bracket is arranged on the outer side of the injector, and the angle of the auxiliary bracket can be adjusted.
Preferably, the needle tip may be provided in different sizes.
Preferably, the first cylinder and the second cylinder are both in conical structures, and the surfaces of the first cylinder and the second cylinder are both provided with a sterilization layer.
Preferably, the surface of the injector is provided with a fixing buckle, and the fixing buckle is connected with the auxiliary bracket.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention meets the requirements of different injection modes on angles and depths, the arranged conical sleeving mechanism realizes the disassembly of the needle tip, meets the requirements of one needle for one time and the needle requirement of different injection modes during injection, meets the requirements of different injection by combining the detachable needle tip and the second cylinder body capable of replacing liquid medicine, and has wide adaptability;
2. through combining angle adjustable auxiliary stand, use the syringe injection more convenient, be favorable to improving work efficiency, the practicality is better.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a second barrel structure according to the present invention;
wherein: 1. a hollow cylinder; 2. a push rod mechanism; 3. a ball screw mechanism; 4. a first cylinder; 5. a second cylinder; 6. a laser angle measuring mechanism; 7. a needle tip; 8. a one-way valve; 9. and (3) a piston.
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present invention are obtained will become readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.
Embodiment one:
as shown in fig. 1-2, an injection angle and depth adjustable needle assembly, the needle assembly comprising: the injector consists of a needle head section, a liquid medicine pushing and injecting section and a penetration depth control section, wherein the penetration depth control section is a hollow cylinder body 1, a rack and a push rod mechanism 2 are arranged in the hollow cylinder body 1, the liquid medicine pushing and injecting section consists of a first cylinder body 4 and a second cylinder body 5, the first cylinder body 4 is slidably connected in the hollow cylinder body 1, the second cylinder body 5 is connected to the inner side of the first cylinder body 4, the needle head section is connected with a needle point 7, and one end of the needle point 7 is connected with the first cylinder body 4; the needle point 7 is provided with a conical sleeving mechanism, a laser angle measuring mechanism 6 is arranged in the hollow cylinder 1 corresponding to the needle point 7, one end of the second cylinder 5 is communicated with the needle point 7 in the first cylinder 4, a one-way valve 8 and a piston 9 are arranged in the second cylinder 5, and one end of the second cylinder 5 far away from the needle point 7 is provided with a ball screw mechanism 3;
the frame in the hollow cylinder 1 is used for sliding a liquid medicine pushing section, the push rod mechanism 2 is used for enabling the liquid medicine pushing section to enter the skin of a patient, the second cylinder 5 is used for holding liquid medicine, and the angle auxiliary measurement during liquid medicine pushing is realized through the hollow cylinder 1 and the laser angle measuring mechanism 6 during use; the determination of the injection depth is realized by utilizing the sliding of the push rod mechanism 2 and the first cylinder 4 in the hollow cylinder 1; the cylinder body provided with a plurality of liquid medicine bearing cylinders is used for meeting the differentiated injection requirements; meanwhile, the conical sleeving mechanism is utilized to realize the replacement requirement of the needle tip 7; the ball screw mechanism 3, the needle point 7 and the second cylinder 5 are used for realizing injection pushing injection in a movable fit manner; the invention meets the requirements of different injection modes on angles and depths, the conical sleeving mechanism realizes the disassembly of the needle tip 7, meets the requirements of one needle for one time and the needle requirement of different injection modes during injection, and meets the requirements of different injections by combining the detachable needle tip 7 and the second cylinder 5 for replacing liquid medicine, thereby having wide adaptability.
Embodiment two:
in other embodiments, as shown in fig. 1, an auxiliary bracket is arranged on the outer side of the injector, and the angle of the auxiliary bracket can be adjusted;
when the device is used, the auxiliary bracket can be used for assisting the injector in injecting under the condition that the limb of a patient is injected well, and the angle can be adjusted; through combining angle adjustable auxiliary stand, use the syringe injection more convenient, be favorable to improving work efficiency, the practicality is better.
In other embodiments, this embodiment discloses that, as shown in fig. 1, the needle tip 7 may be set to different specifications; by setting the needle tip 7 to different specifications, the practicality is better.
In other embodiments, as shown in fig. 1, the first cylinder 4 and the second cylinder 5 are both in conical structures, and the surfaces of the first cylinder 4 and the second cylinder 5 are both provided with a sterilization layer; by arranging the degerming layers on the surfaces of the first cylinder 4 and the second cylinder 5, pathogen infection can be avoided, and safety is improved.
In other embodiments, as shown in fig. 1, the surface of the injector is provided with a fixing buckle, and the fixing buckle is connected with the auxiliary bracket; through be equipped with fixed knot on the syringe for the syringe is more stable with the connection of auxiliary stand, is favorable to improving the stability of work.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.