Multi-functional blunt needle

Abstract

The utility model relates to medical instrument technical field provides a kind of multi-functional blunt needle, including blunt needle and the sharp needle of being sleeved to the outside of blunt needle, the sharp needle can slip along the length direction of the blunt needle, and the needle head of the blunt needle can be completely hidden in the sharp needle;The inside surface of the sharp needle is provided with at least a pair of limiters, and a pair of limiters are symmetrically arranged relative to the central axis of the sharp needle;The outer surface of the blunt needle is provided with a plurality of protrusions, and a limit can be abutted below a protrusion, which is a needle for multiple purposes, with multiple functions such as sharp needle puncture, blunt needle anesthesia and tissue stripping, and can effectively avoid the mechanical damage of tissue, vascular nerve trauma and inflammation reaction risk caused by repeated puncture.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a multifunctional blunt needle. Background Technology

[0002] With the continuous development of medical aesthetics technology, injectable cosmetic procedures, as a minimally invasive and precise aesthetic enhancement method, rely heavily on the appropriate selection of materials and needles, as well as skilled operating techniques, for their safety and effectiveness. Sharp needles, with their sharp, beveled tips, are designed for rapid and precise penetration of the skin and tissue. Their cutting action ensures smooth needle insertion and precise point-like injection positioning, but they are more prone to puncturing blood vessels and nerves. Blunt needles, on the other hand, have blunted tips and lack cutting action, relying on physical propulsion to bluntly penetrate tissue rather than directly piercing it. Their rounded design helps to push the injected material along the interstitial spaces, reducing the risk of directly puncturing blood vessels and nerves.

[0003] However, blunt needles cannot pierce the skin directly and require the use of a sharp needle to make an incision. In current techniques, a sharp needle is first used to make an incision, then withdrawn from the skin, before inserting a blunt needle for puncture. This repeated puncture can potentially lead to mechanical tissue damage, vascular and nerve trauma, and inflammatory reactions. Utility Model Content

[0004] The purpose of this invention is to provide a multifunctional blunt needle that can be used for multiple purposes, including sharp needle puncture, blunt needle anesthesia, and tissue dissection. It can also effectively avoid the risks of mechanical tissue damage, vascular and nerve trauma, and inflammatory reactions caused by repeated punctures.

[0005] The embodiments of this utility model are achieved through the following technical solutions:

[0006] A multifunctional blunt needle includes a blunt needle and a sharp needle sleeved on the outside of the blunt needle. The sharp needle can slide along the length direction of the blunt needle, and the tip of the blunt needle can be completely hidden inside the sharp needle.

[0007] The inner side of the sharp needle is provided with at least one pair of limiting members, and the pair of limiting members are symmetrically arranged with respect to the central axis of the sharp needle.

[0008] The outer surface of the blunt needle is provided with multiple protrusions, and one of the limiting members can abut against the bottom of one of the protrusions.

[0009] Furthermore, the outer surface of the blunt needle is provided with a plurality of openings, which are evenly arranged along the length and circumferential direction of the outer surface of the blunt needle.

[0010] Furthermore, the openings are provided in 4-10 portions.

[0011] Furthermore, the protrusions are evenly arranged along the length and / or circumferential direction of the outer surface of the blunt needle; and a plurality of the protrusions are evenly distributed on both sides symmetrically on the central axis of the blunt needle.

[0012] Furthermore, the protrusion is in the shape of a hemispherical or semi-ellipsoidal arc.

[0013] Furthermore, the limiting member is an elastic rod integrally formed on the inner wall of the sharp needle, and the end of the elastic rod away from the inner wall of the sharp needle is higher than the end of the elastic rod close to the inner wall of the sharp needle.

[0014] Furthermore, the limiting member is provided in two pairs, and the two pairs of limiting members are evenly arranged along the length direction of the sharp needle.

[0015] Furthermore, the end of the blunt needle away from the needle tip is provided with a constricted end to form a constricted portion.

[0016] Furthermore, a needle handle is provided below the constricted portion.

[0017] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0018] This invention combines a blunt needle with a sharp needle, enabling multiple uses with a single needle, including sharp needle puncture, blunt needle anesthesia, and tissue dissection. It eliminates the need for frequent instrument changes at different stages of the procedure, effectively avoiding the risks of mechanical tissue damage, vascular and nerve trauma, and inflammatory reactions caused by repeated punctures. By completing multiple steps such as incision, anesthesia, and dissection with a single needle insertion, it significantly reduces the possibility of tissue tearing and hematoma caused by repeated punctures, greatly alleviating the physiological and psychological burden on patients and providing a safer, more efficient, and minimally invasive solution for clinical treatment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the multifunctional blunt needle provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the blunt needle provided in an embodiment of the present utility model;

[0022] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0023] Icons: 1- Blunt needle, 11- Opening, 12- Protrusion, 13- Top cover, 14- Magnet, 2- Sharp needle, 21- Limiting part, 3- Narrowing part, 4- Needle handle. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Example 1

[0026] A multifunctional blunt needle includes a blunt needle 1 and a sharp needle 2 sleeved on the outside of the blunt needle 1. The sharp needle 2 can slide along the length direction of the blunt needle 1, and the tip of the blunt needle 1 can be completely hidden inside the sharp needle 2.

[0027] At least one pair of limiting members 21 are provided on the inner side of the sharp needle 2, and the pair of limiting members 21 are symmetrically arranged with respect to the central axis of the sharp needle 2.

[0028] The outer surface of the blunt needle 1 is provided with a plurality of protrusions 12, and a limiting member 21 can abut against the bottom of one of the protrusions 12.

[0029] Working principle: Before use, the blunt needle 1 is placed inside the sharp needle 2. When in use, the sharp needle 2 is first used to puncture the opening 11. This reduces tissue damage and opens a smooth channel for the blunt needle 1, reducing the time the blunt needle 1 is exposed to the outside world and reducing the risk of infection. After the sharp needle 2 enters the target position, the blunt needle 1 can be pushed forward until the needle tip of the blunt needle 1 is exposed. At the same time, corresponding scale lines or other markings can be set at the end of the blunt needle 1 to better enable medical staff to know the positional change of the blunt needle 1 relative to the sharp needle 2, so as to determine that the blunt needle 1 has exposed the sharp needle 2.

[0030] At this point, the sharp needle 2 can be withdrawn outward, exposing only the blunt needle 1 under the skin. Since the outer surface of the blunt needle 1 is provided with multiple protrusions 12, the protrusions 12 can be used to make close contact with the subcutaneous tissue. Through precise manipulation, the doctor can use the increased contact area of ​​the protrusions 12 to achieve precise expansion of the dissection range, ensuring that the surgery is completed efficiently and accurately.

[0031] More importantly, in order to maintain the stability between the sharp needle 2 and the blunt needle 1, this utility model also uses a limiting member 21 to cooperate with the protrusion 12 between the sharp needle 2 and the blunt needle 1, so that the limiting member 21 abuts against the lower part of the protrusion 12, thereby keeping the blunt needle 1 confined inside the sharp needle 2 and preventing it from slipping. Therefore, the protrusion 12 structure not only increases the contact area, but also plays a limiting role, maintaining the stability of the blunt needle 1.

[0032] Therefore, the combination of the blunt needle 1 and the sharp needle 2 in this invention not only allows for multiple uses with a single needle, combining the functions of sharp needle 2 puncture, blunt needle 1 anesthesia, and tissue dissection, but also eliminates the need for frequent instrument changes at different stages of the procedure, effectively avoiding the risks of mechanical tissue damage, vascular and nerve trauma, and inflammatory reactions caused by repeated punctures. By completing multiple steps such as opening 11, anesthesia, and dissection with a single needle insertion, the possibility of tissue tearing and hematoma caused by repeated punctures is significantly reduced, greatly alleviating the physiological and psychological burden on patients and providing a safer, more efficient, and minimally invasive solution for clinical treatment.

[0033] In this embodiment, the outer surface of the blunt needle 1 is provided with a plurality of openings 11. Preferably, there are 4-10 openings 11, and the plurality of openings 11 are evenly arranged along the length and circumference of the outer surface of the blunt needle 1. The design of multiple openings 11 at the head of the blunt needle 1 allows local anesthetic drugs to diffuse evenly and efficiently to the designated area through the multiple openings 11, fully infiltrate the treatment area, improve the anesthetic effect, and reduce the patient's subsequent treatment pain.

[0034] In this embodiment, the protrusions 12 are uniformly arranged along the length and / or circumferential direction of the outer surface of the blunt needle 1; and multiple protrusions 12 are evenly distributed on both sides symmetrically on the central axis of the blunt needle 1. This protrusion 12 structure not only increases the contact area, but also better cooperates with the limiting member 21. When the blunt needle 1 and the sharp needle 2 slide relative to each other, the limiting member 21 can be sequentially limited under multiple protrusions 12 in the length direction. In addition, if the protrusions 12 are only arranged in two rows symmetrically along the length direction, the limiting member 21 can be separated from the protrusions 12 by rotating the sharp needle 2, so that the sharp needle 2 can be better withdrawn.

[0035] In this embodiment, the protrusion 12 is a hemispherical or semi-elliptical arc shape; this makes the patient more comfortable and reduces damage to the tissue when in contact with it.

[0036] In this embodiment, the limiting member 21 is an elastic rod integrally formed on the inner wall of the sharp needle 2, and the end of the elastic rod away from the inner wall of the sharp needle 2 is higher than the end of the elastic rod close to the inner wall of the sharp needle 2. This not only makes it easy to process, but also facilitates the displacement and positioning of the limiting member 21 among multiple protrusions 12. The displacement and limiting requirements can be achieved by using elastic deformation, making it more reliable to use.

[0037] In this embodiment, the limiting member 21 is provided in two pairs, that is, four limiting members 21. The two pairs of limiting members 21 are evenly arranged along the length direction of the sharp needle 2. In this way, the limiting members 21 are used to limit the engagement with the multiple protrusions 12, thereby maintaining the stability of the engagement between the blunt needle 1 and the sharp needle 2.

[0038] In this embodiment, the end of the blunt needle 1 away from the needle tip is designed with a constricted end to form a constricted portion 3, which facilitates the withdrawal of the sharp needle 2.

[0039] In this embodiment, a needle handle 4 is provided below the constricted portion 3.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multifunctional blunt needle, characterized in that, It includes a blunt needle and a sharp needle sleeved on the outside of the blunt needle. The sharp needle can slide along the length direction of the blunt needle, and the tip of the blunt needle can be completely hidden inside the sharp needle. The inner side of the sharp needle is provided with at least one pair of limiting members, and the pair of limiting members are symmetrically arranged with respect to the central axis of the sharp needle. The outer surface of the blunt needle is provided with multiple protrusions, and one of the limiting members can abut against the bottom of one of the protrusions.

2. The multifunctional blunt needle according to claim 1, characterized in that, The outer surface of the blunt needle is provided with multiple openings, which are evenly arranged along the length and circumference of the outer surface of the blunt needle.

3. The multifunctional blunt needle according to claim 2, characterized in that, The number of openings is 4-10.

4. The multifunctional blunt needle according to claim 1, characterized in that, The protrusions are evenly arranged along the length and / or circumferential direction of the outer surface of the blunt needle; and multiple protrusions are evenly distributed on both sides of the central axis of the blunt needle symmetrically.

5. The multifunctional blunt needle according to claim 4, characterized in that, The protrusion is in the shape of a hemispherical or semi-ellipsoidal arc.

6. The multifunctional blunt needle according to claim 1, characterized in that, The limiting member is an elastic rod integrally formed on the inner wall of the sharp needle, and the end of the elastic rod away from the inner wall of the sharp needle is higher than the end of the elastic rod close to the inner wall of the sharp needle.

7. The multifunctional blunt needle according to claim 6, characterized in that, The limiting member is provided in two pairs, and the two pairs of limiting members are evenly arranged along the length direction of the sharp needle.

8. The multifunctional blunt needle according to claim 1, characterized in that, The blunt needle has a constricted end away from the needle tip, forming a constricted section.

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