Puncture guide needle

Abstract

A needle handle comprises a V-shaped needle holding part, the top end face of the V-shaped needle holding part is a slope face inclining downwards from the rear end to the front end, the front end of the V-shaped needle holding part is small, the tail of the V-shaped needle holding part is large, and the two side walls of a V-shaped groove in the tail of the V-shaped needle holding part extend outwards to form side extending arms which are integrally formed with the V-shaped needle holding part in an injection mode. A puncture needle of the puncture needle head comprises a groove-shaped needle tube, a needle guide groove of the groove-shaped needle tube penetrates through a sharp blade head end, the rear end of the groove-shaped needle tube extends to form a fixed tail section, the fixed tail section is inserted into a needle fixing seat portion, located at the tail section, of the bottom of a V-shaped groove, the groove-shaped needle tube is supported on a needle tube bearing wall of the front section of the bottom of the V-shaped groove, and a notch of the needle guide groove faces upwards. And the front section, with the sharp blade head end, of the groove-shaped needle tube extends out of the front port of the V-shaped groove. Meanwhile, holding operation is convenient, and the medical efficiency and safety are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a puncture guide needle. Background Technology

[0002] Blunt needle injection is a common injection method in the medical aesthetics industry, which requires a piercing needle to create a hole in the skin. Existing piercing needles typically include a needle handle for hand gripping and a fixed puncture needle tube (such as the technical solution disclosed in Chinese Patent No. CN202021436154.2). The sharp tip of the puncture needle tube is used to create a hole in the skin. After the skin is pierced, the piercing needle is removed, the hole is located, and then the blunt needle is inserted along the direction of the hole.

[0003] The existing piercing needles have the following defects: 1. The piercing needles do not provide effective guidance for injection. When performing injection after piercing the skin and making an opening, it is often difficult to remove the piercing needle and find the opening position again.

[0004] The needle handle is cylindrical, and although it adopts a certain degree of flattening design, the small size of the piercing needle makes it difficult to hold and operate.

[0005] The aforementioned technical defects mean that the efficiency and safety of blunt needle injection in medicine cannot be guaranteed. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the existing technology by providing a puncture guide needle that can guide the injection needle, is easy to hold and operate, and effectively improves medical efficiency and safety.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A puncture guide needle includes a needle handle and a puncture needle with a sharp blade tip. The needle handle includes a V-shaped needle holding portion with a V-shaped groove. The top surface of the V-shaped needle holding portion is a sloping surface that slopes downward from the rear end to the front end. The V-shaped needle holding portion is smaller at the front end and larger at the tail end. Both sides of the V-shaped groove at the tail end of the V-shaped needle holding portion have outwardly extending side arms, which are integrally injection molded with the V-shaped needle holding portion. The bottom of the V-shaped groove has a needle fixing seat at the tail end and a needle tube support wall at the front end.

[0009] The puncture needle includes a grooved needle tube with a guide needle groove. The front end of the grooved needle tube is the sharp blade end. The guide needle groove of the grooved needle tube extends through the sharp blade end. The rear end of the grooved needle tube extends into a fixed tail section. The fixed tail section is inserted into the needle base. The grooved needle tube is supported on the needle tube support wall with the groove of the guide needle groove facing upward. The front section of the grooved needle tube carrying the sharp blade end extends out of the front port of the V-shaped groove.

[0010] Preferably, a dispensing interval is provided in the middle of the pin fixing part, so that the pin fixing part forms a front seat body and a rear seat body that are spaced apart along the extension direction of the V-shaped groove through the dispensing interval, and the dispensing interval is filled with fixing adhesive.

[0011] Preferably, the two side arms are columnar, and the bottom of the side arms has a plurality of material scooping grooves distributed along the extension direction of the side arms, forming an uneven anti-slip surface at the bottom of the side arms through the material scooping grooves.

[0012] Preferably, a material reduction groove is provided on the outer periphery of the end face of the free end of the side extension arm, and an end protrusion is formed on the end face of the free end of the side extension arm through the material reduction groove.

[0013] Preferably, the bottom of the material feeding groove has an ejector pin support point that provides support for the mold ejector pin.

[0014] Preferably, the material feeding groove is an open ring shape, and a corresponding protrusion is formed at the bottom of the material feeding groove within the ring hole of the material feeding groove, with the ejector pin support point corresponding to the protrusion.

[0015] By adopting the above technical solution, after the puncture needle punctures the skin, an inlet hole is formed. The blunt injection needle is inserted into the inlet hole along the guide groove of the grooved needle tube. Afterwards, the puncture guide needle is removed, and the injection operation is performed. This achieves guided needle insertion, improving medical efficiency and safety. Furthermore, the needle handle features side arms extending from the tail of the middle section, facilitating hand operation and skin puncture. A dotted adhesive spacer in the middle of the needle holder ensures a more secure and reliable fixation of the puncture needle, preventing the risk of needle dislodgement due to insufficient stability. Simultaneously, the columnar design of the side arms improves the grip and stability. The columnar structure, combined with the material extraction groove design, provides a non-slip surface and prevents deformation during injection molding due to excessive thickness. During injection molding, the mold ejector pins can be supported at the bottom of the material extraction groove, concealing the ejector pin contact point and improving the product's aesthetics.

[0016] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is an assembly diagram of the puncture needle assembly of this utility model;

[0018] Figure 2 This is a top view of the puncture needle assembly of this utility model;

[0019] Figure 3 for Figure 2 A sectional view taken along line AA.

[0020] Figure 4This is a schematic diagram of the structure of the puncture guide needle of this utility model. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the structure of the puncture guide needle of this utility model. Figure 2 . Detailed Implementation

[0022] See appendix Figures 1-5 This utility model discloses a puncture needle assembly, including a puncture guide needle head 1 and a sheath 2. The puncture guide needle head 1 includes a needle handle 11 and a puncture needle 12 with a sharp blade tip 121. The needle handle 11 includes a V-shaped needle holding part 111 with a V-shaped groove 1111. The top surface of the V-shaped needle holding part 111 is a sloping surface 1112 that slopes downward from the rear end to the front end. The V-shaped needle holding part 111 has a small front end (a) and a large tail end (b). Both sides of the V-shaped groove 1111 at the tail end of the V-shaped needle holding part 111 extend outward with a side arm 112. The side arm 112 is integrally injection molded with the V-shaped needle holding part 111. The bottom of the V-shaped groove 1111 has a positioning... The puncture needle 12 includes a grooved needle tube 121 with a guide needle groove 1211 at the tail end of the needle holder 1113 and a needle tube support wall 1114 at the front end. The front end of the grooved needle tube 121 is the sharp blade end 1212. The guide needle groove 1211 of the grooved needle tube 121 extends through the sharp blade end 1212. The rear end of the grooved needle tube 121 extends to a fixed tail section 122. The fixed tail section 122 is inserted into the needle holder 1113. The grooved needle tube 121 is supported on the needle tube support wall 1114 with the groove of the guide needle groove 1211 facing upward. The front section of the grooved needle tube 121 carrying the sharp blade end 1212 extends out of the front port of the V-shaped groove 1111. After the skin is punctured by the puncture needle, an entry hole is formed. The blunt injection needle is inserted into the entry hole along the guide needle groove of the grooved needle tube. The puncture guide needle is then removed before the injection is performed. This allows for guided insertion of the blunt injection needle, improving medical efficiency and safety. The needle handle features side arms 112 formed by the tail section in the middle, facilitating hand operation and skin puncture.

[0023] To avoid the risk of needle dislodgement, a dotted adhesive spacer 11133 is provided in the middle of the needle holder 1113. This spacer forms a front seat 11132 and a rear seat 11131 spaced apart along the extension direction of the V-shaped groove 1111. The dotted adhesive spacer 11133 is filled with adhesive (not shown in the figure). This achieves more reliable fixation of the needle and avoids the risk of needle dislodgement.

[0024] The two side arms 112 are columnar, adapting to the tail size of the V-shaped needle holder 111. Several ejector grooves 1121 are distributed along the extension direction of the side arms 112, forming a textured anti-slip surface. The bottom of each ejector groove 1121 has an ejector pin support point 1122 for supporting the mold ejector pins. The ejector grooves 1121 prevent excessive thickness of the side arms from causing shrinkage during injection molding, reducing material usage and costs. Furthermore, the multiple spaced ejector grooves provide an anti-slip effect and improve the feel. Another advantage is that the ejector pin contact point (where the mold contacts the product and ejects it) can be located within the ejector groove 1121. This conceals the impression point (i.e., the ejector pin support point 1122) formed by the contact between the ejector pin and the product within the ejector groove, resulting in an aesthetically pleasing design without affecting the feel of the product. The material feeding groove 1121 is an open annular shape, and a corresponding protrusion 1123 is formed at the bottom of the material feeding groove 1121, which is located within the annular hole of the material feeding groove 1121. The ejector pin support point 1122 is located on the protrusion 1123; that is, the ejector pin rests on the protrusion 1123. This design achieves greater material saving while ensuring product strength.

[0025] To address the issue of concavity at the end of the side arm during molding, a material reduction groove 1124 is provided on the outer periphery of the end face of the free end of the side arm 112. An end protrusion 1125 is formed on the end face of the free end of the side arm 112 through the material reduction groove 1124. This achieves a small-end design for the end of the side arm, preventing concavity during molding.

[0026] The injection needle of this utility model adopts a design that is significantly different from conventional piercing needles, and has the following advantages:

[0027] After the skin is punctured by the puncture needle, an inlet hole is formed. The blunt injection needle is inserted into the inlet hole along the guide groove of the grooved needle tube. The puncture guide needle is then removed before the injection procedure. This allows for guided insertion of the blunt injection needle, improving medical efficiency and safety. Furthermore, the needle handle features side arms extending from the tail section in the middle, facilitating hand operation and skin puncture. A dotted adhesive spacer in the middle of the needle holder ensures a more secure and reliable fixation of the puncture needle, preventing the risk of dislodgement. The columnar design of the side arms improves grip and stability. The columnar structure, combined with the material extraction groove design, provides a non-slip surface and prevents deformation during injection molding due to excessive thickness. During injection molding, the mold ejector pins can be supported at the bottom of the material extraction groove, concealing the ejector pin contact point and improving the product's aesthetics.

Claims

1. A puncture guide needle, comprising a needle handle and a puncture needle having a sharp blade tip, characterized in that: The needle handle includes a V-shaped needle-holding part with a V-shaped groove. The top surface of the V-shaped needle-holding part is a sloping surface that slopes downward from the rear end to the front end. The V-shaped needle-holding part is smaller at the front and larger at the tail. Both sides of the V-shaped groove at the tail end of the V-shaped needle-holding part extend outward with a side arm, which is integrally injection molded with the V-shaped needle-holding part. The bottom of the V-shaped groove has a needle-fixing seat at the tail end and a needle tube support wall at the front end. The puncture needle includes a grooved needle tube with a guide needle groove. The front end of the grooved needle tube is the sharp blade end. The guide needle groove of the grooved needle tube extends through the sharp blade end. The rear end of the grooved needle tube extends into a fixed tail section. The fixed tail section is inserted into the needle base. The grooved needle tube is supported on the needle tube support wall with the groove of the guide needle groove facing upward. The front section of the grooved needle tube carrying the sharp blade end extends out of the front port of the V-shaped groove.

2. The puncture guide needle according to claim 1, characterized in that: The center of the pin holder is provided with a dispensing interval, thereby forming a front seat and a rear seat that are spaced apart along the direction of the V-shaped groove. The dispensing interval is filled with fixing adhesive.

3. The puncture guide needle according to claim 1, characterized in that: The two side arms are columnar, and several material chute grooves are distributed at the bottom of the side arms along the extension direction of the side arms. The bottom of the side arms forms an uneven anti-slip surface through the material chute grooves.

4. The puncture guide needle according to claim 3, characterized in that: The outer side of the free end face of the side arm is provided with a material reduction groove, and the end face of the free end of the side arm forms an end protrusion through the material reduction groove.

5. The puncture guide needle according to claim 3, characterized in that: The bottom of the material feeding groove has an ejector pin support point that provides support for the mold ejector pins.

6. The puncture guide needle according to claim 5, characterized in that: The material feeding groove is an open ring shape, and a corresponding protrusion is formed at the bottom of the material feeding groove inside the ring hole. The pin support point is located on the protrusion.

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