Medical blunt needle

Abstract

The utility model discloses a medical blunt needle, which belongs to the technical field of medical instruments, and adopts the technical scheme that the medical blunt needle comprises a needle seat and a needle tube, a runner is arranged in the needle tube, a needle head and a needle tail are respectively arranged at two ends of the needle tube, a side opening communicated with the runner is arranged at the needle head, the needle tail is connected with the needle seat and communicated with the inside of the needle seat, and an identifier corresponding to the side opening is arranged on the needle seat. The identification and the side opening face the same direction. The mark is more striking, even if the needle head pierces the surgical site, the orientation of the side opening can be determined through the position of the mark, the operation of a doctor can be effectively assisted, and compared with an existing pause needle, the pause needle can further improve the control of the doctor on a medicament injection area, and is more convenient to use and operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a medical blunt needle. Background Art

[0002] A blunt needle is a special needle widely used in medical devices, also known as a round-tip needle or a blunt-tip needle. Its needle tip is designed to be round or specially treated to make it blunt. Compared with traditional sharp needles, the blunt needle has no tip and edge, has relatively strong elasticity, is not easy to directly stab nerves or blood vessels, and can enter the needle from a hidden place to reach a relatively far injection position. In the medical field, blunt needles are commonly used in injection, filling, and extraction operations, such as drug injection, hyaluronic acid filling, fat filling, extraction, etc.

[0003] For example, a blunt needle for microplastic surgery disclosed in a Chinese patent with the publication number CN205268203U includes a needle seat and a needle tube. The bottom end of the needle tube is connected to the needle seat. The side holes of the needle tube are semicircular. The top end of the needle tube is closed, and side holes are opened near the top end of the needle tube; the side holes are used to fill cosmetic substances or extract fat at the surgical site.

[0004] The above technical solution has the following defects: the side holes are close to the needle tip. After the needle tip penetrates into the surgical site, the orientation of the side holes is difficult to determine; secondly, since the side holes are small, even if the doctor observes closely and remembers the orientation of the side holes before piercing the patient's skin, during the injection and filling process, it is necessary to move or change the piercing length of the needle, and the orientation of the side holes is likely to shift, or it is necessary to rotate the needle tube to change the injection direction of the filler. In the case where the orientation of the side holes is difficult to determine, the filler cannot be accurately injected into the predetermined area, affecting the surgical effect; that is to say, for fine surgeries that require controlling the injection direction, the use of the above blunt needle is not convenient. Summary of the Utility Model

[0005] The purpose of the present utility model is to propose a medical blunt needle in view of the above problems existing in the prior art. The technical problem to be solved by the present utility model is: how to improve the operation convenience of the blunt needle.

[0006] The above technical purpose of the present utility model can be achieved by the following technical solutions:

[0007] A medical blunt needle includes a needle seat and a needle tube. The needle tube has a flow channel inside. The two ends of the needle tube are respectively a needle tip and a needle tail. There is a side port communicating with the flow channel at the needle tip. The needle tail is connected to the needle seat and communicates with the inside of the needle seat. A mark corresponding to the side port is provided on the needle seat, and the mark has the same orientation as the side port.

[0008] In the above blunt needle, the mark is a graphic, an arrow or a character.

[0009] In the above-mentioned blunt needle, the mark is printed or integrally formed on the outer wall of the needle hub.

[0010] In the above-mentioned blunt needle, the color of the mark is different from that of the needle hub.

[0011] In the above-mentioned blunt needle, the cross-sectional shape of the side port is trapezoidal or arc-shaped.

[0012] In the above-mentioned blunt needle, with the needle tip as a reference, a plurality of scale lines are arranged at intervals on the outer wall of the needle tube, and each of the scale lines is equidistantly distributed.

[0013] In the above-mentioned blunt needle, the interval H between each of the scale lines is 5-10 mm.

[0014] In the above-mentioned blunt needle, the width W of each of the scale lines itself is 0.2-1 mm.

[0015] In the above-mentioned blunt needle, an assembly groove is provided in the needle hub, and a protrusion is provided at the bottom of the assembly groove; an installation hole communicating with the assembly groove is provided on the needle hub, and the installation hole penetrates through the protrusion, the installation hole is for inserting the needle tail, the needle tail is connected to the installation hole through a sealing glue, and the flow channel communicates with the assembly groove.

[0016] In the above-mentioned blunt needle, the outer end of the installation hole has a flared opening.

[0017] In summary, the beneficial effects of the present utility model compared with the prior art are as follows:

[0018] 1. The side port corresponds to the mark. Even if the needle tip penetrates into the surgical site, the orientation of the side port can be determined through the position of the mark, which can effectively assist the surgeon in the operation and improve the accuracy of the injection position of the medicament. Compared with the existing blunt needles, the use and operation of this blunt needle are more convenient;

[0019] 2. The color of the mark is different from that of the needle hub, making the two have a high contrast, the mark is more eye-catching, and it is convenient for the surgeon to quickly find the position of the mark, so as to determine the orientation of the side port;

[0020] 3. The needle tube is divided into multiple sections by the scale lines. By observing the scale lines, the insertion length of the needle tip can be confirmed, which can further improve the surgeon's control over the injection area of the medicament; moreover, the scale lines are relatively thick, making the scale lines easier to observe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic external structure diagram of the embodiment;

[0022] Figure 2 For Figure 1 The sectional view of

[0023] Figure 3 Explosion structure schematic diagram of the embodiment;

[0024] Figure 4 Cross-sectional schematic diagram after the needle seat and the needle cap are assembled;

[0025] Figure 5 Structure schematic diagram after the needle seat and the needle cap are assembled.

[0026] Reference numerals: 100, needle seat; 110, identifier; 120, assembly groove; 121, protrusion; 130, mounting hole; 131, flared opening; 140, sealing glue;

[0027] 200, needle tube; 210, flow channel; 220, needle tip; 221, side opening; 230, needle tail; 240, graduation line;

[0028] 300, needle cap. Detailed implementation manners

[0029] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0030] A medical blunt needle, as Figures 1 - 5 shown, includes a needle seat 100 and a needle tube 200. The needle tube 200 has a flow channel 210 inside. The two ends of the needle tube 200 are respectively a needle tip 220 and a needle tail 230. The top end of the needle tip 220 is closed. There is a side opening 221 communicating with the flow channel 210 at the needle tip 220. The needle tail 230 is connected to the needle seat 100 and communicates with the inside of the needle seat 100. An identifier 110 corresponding to the side opening 221 is provided on the needle seat 100, and the identifier 110 has the same orientation as the side opening 221.

[0031] The identifier 110 is printed or integrally formed on the outer wall of the needle seat 100. Further, the identifier 110 is a graphic, an arrow or a character; the character is in English or Chinese.

[0032] The identifier 110 itself has a color, and the color of the identifier 110 is different from the color of the needle seat 100. Specifically, the identifier 110 has a different color from the outer wall of the needle seat 100, which improves the contrast between the identifier 110 and the needle seat 100, makes the identifier 110 more conspicuous, and thus makes it easier to find the position of the identifier 110. In some implementation manners, the identifier 110 adopts bright and eye-catching colors, such as red, yellow or blue.

[0033] The cross-sectional shape of the side opening 221 is trapezoidal or arc-shaped.

[0034] As Figures 1 - 3As shown, with the needle tip 220 as a reference, a plurality of scale lines 240 are provided at intervals on the outer wall of the syringe barrel 200, and the scale lines 240 are equally spaced; the interval H between the scale lines 240 is 5 to 10 mm (millimeters). Taking 10 mm as an example, the distance from the needle tip 220 to the nearest scale line 240 is 10 mm, and the distance between the remaining scale lines 240 is also 10 mm.

[0035] Each scale line 240 is annular, and the width W of each scale line 240 itself is 0.2 to 1 mm. In some embodiments, the width W of each scale line 240 itself is 0.5 mm or 1 mm, so that the scale line 240 can be thicker and more conspicuous, facilitating the doctor to judge the inserted length of the needle tip 220.

[0036] The needle hub 100 has an assembly groove 120 inside, and a protrusion 121 is provided at the bottom of the assembly groove 120; the needle hub 100 has a mounting hole 130 communicating with the assembly groove 120, and the mounting hole 130 penetrates through the protrusion 121. The mounting hole 130 is for the needle tail 230 to be inserted, and the needle tail 230 and the mounting hole 130 are connected by a sealing glue 140, and the flow channel 210 communicates with the assembly groove 120.

[0037] As Figure 2 shown, in some embodiments, the outer end of the mounting hole 130 has a flared mouth 131, and the flared mouth 131 can guide the needle tail 230 inserted into the mounting hole 130 and can increase the amount of glue injection between the mounting hole 130 and the needle tail 230, thereby enhancing the connection strength between the needle tail 230 and the needle hub 100.

[0038] As Figures 3 - 5 shown, a needle cap 300 is plugged on the needle hub 100. The inside of the needle cap 300 can accommodate the syringe barrel 200, and the needle cap 300 provides protection for the syringe barrel 200 to prevent the syringe barrel 200 from being contaminated.

[0039] The working principle of the present utility model is as follows:

[0040] The needle hub 100 is connected to the syringe through the assembly groove 120. After the needle tip 220 is inserted into the surgical site, the orientation of the side port 221 can be determined by the position of the mark 110, so as to facilitate the doctor to control the injection direction of the medicament or filler (such as hyaluronic acid) at the surgical site; moreover, according to the scale line 240, the inserted length of the needle tip 220 can be visually estimated, improving the accuracy of the injection position of the medicament or filler, ensuring the surgical effect, and enhancing the operation convenience of the present bent needle.

[0041] The specific embodiments described herein are only examples of the spirit of the present utility model; those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A medical blunt needle, characterized in that: It includes a needle hub (100) and a needle tube (200). There is a flow channel (210) inside the needle tube (200). The two ends of the needle tube (200) are a needle tip (220) and a needle tail (230) respectively. There is a side port (221) at the needle tip (220) that communicates with the flow channel (210). The needle tail (230) is connected to the needle hub (100) and communicates with the inside of the needle hub (100). There is a mark (110) corresponding to the side port (221) on the needle hub (100), and the mark (110) has the same orientation as the side port (221).

2. The blunt needle according to claim 1, wherein: The mark (110) is a graphic, an arrow or a character.

3. The blunt needle according to claim 1, wherein: The mark (110) is printed or integrally formed on the outer wall of the needle hub (100).

4. The blunt needle according to claim 1, wherein: The color of the mark (110) is different from the color of the needle hub (100).

5. The blunt needle according to claim 1, wherein: The cross-sectional shape of the side port (221) is trapezoidal or arc-shaped.

6. The blunt needle according to any one of claims 1-5, characterized in that: Taking the needle tip (220) as a reference, a plurality of scale lines (240) are provided at intervals on the outer wall of the needle tube (200), and each of the scale lines (240) is equally spaced.

7. The blunt needle according to claim 6, wherein: The interval H between each of the scale lines (240) is 5 to 10 mm.

8. The blunt needle according to claim 6, characterized in that: The width W of each of the scale lines (240) itself is 0.2 to 1 mm.

9. The obtuse needle according to any one of claims 1-5, characterized in that: There is an assembly groove (120) inside the needle hub (100), and there is a protrusion (121) at the bottom of the assembly groove (120); there is an installation hole (130) on the needle hub (100) that communicates with the assembly groove (120), and the installation hole (130) penetrates through the protrusion (121). The installation hole (130) is for the needle tail (230) to be inserted. The needle tail (230) and the installation hole (130) are connected by a sealing glue (140), and the flow channel (210) communicates with the assembly groove (120).

10. The blunt needle according to claim 9, wherein: The outer end of the installation hole (130) has a flared opening (131).

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