CN210542721U

CN210542721U - Multi-surface multi-angle cutting needle head

Info

Publication number: CN210542721U
Application number: CN201920863300.0U
Authority: CN
Inventors: 王珏
Original assignee: Shikangpei Medical Technology Wuhan Co ltd
Current assignee: Shi Kangpei medical technology (Wuhan) Co.,Ltd.
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-05-19
Anticipated expiration: 2029-06-10

Abstract

The utility model relates to a multiaspect multi-angle cutting syringe needle, it includes the syringe needle body, the front end pinpoint portion of syringe needle body cuts in proper order backward in the past and is formed with most advanced tangent plane section, transition tangent plane section and tail end tangent plane section, most advanced tangent plane section and tail end tangent plane section are circular-arc scarf and two circular-arc bevels respectively in the coplanar, the transition tangent plane section comprises left scarf and the right scarf that the symmetry set up, left side scarf and right scarf are located circular-arc scarf place planar below, left side scarf and right scarf respectively with circular-arc scarf between form dihedral angle and dihedral angle be the obtuse angle. The needle has the advantages that the needle point is thinner and sharper under the same caliber and length, the skin can be punctured more easily, the wound is small, and the pain is reduced; the transition tangent plane section consists of a left tangent plane and a right tangent plane which are symmetrically arranged at the left side and the right side, so that a sharp corner is not formed at the contact part of the transition tangent plane section and the tail end tangent plane section, and the cutting operation for eliminating the sharp corner is not needed, so that the processing is more convenient.

Description

Multi-surface multi-angle cutting needle head

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to multiaspect multi-angle cutting syringe needle.

Background

The needle head is needed to be used during intramuscular injection or intravenous injection, the needle head in the prior art is mostly a single ellipse oblique section or is cut once again to form a double-section surface on the basis of the single oblique section, and the needle head has large slope of the section at the needle point, insufficient gentle degree and poor sharpness when puncturing skin muscles, so that the wound is relatively large and the pain feeling is relatively strong during puncturing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a multiaspect multi-angle cutting syringe needle aims at overcoming the not enough of big, the painful sense of wound when puncturing because of the tangent plane slope causes the puncture greatly of single tangent plane or double tangent plane syringe needle when puncturing skin muscle in prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a multiaspect multi-angle cutting syringe needle, it includes the syringe needle body, the front end pinpoint portion of syringe needle body is formed with most advanced tangent plane section, transition tangent plane section and tail end tangent plane section from the past backward cutting in proper order, most advanced tangent plane section and tail end tangent plane section are circular-arc scarf and two circular-arc scarf in the coplanar respectively, the transition tangent plane section comprises left scarf and the right scarf that the symmetry set up, left side scarf and right scarf are located circular-arc scarf place planar below, left side scarf and right scarf respectively with form the dihedral angle between the circular-arc scarf just the dihedral angle is the obtuse angle.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the obtuse angle corresponding to the dihedral angle is 120-150 degrees.

The adoption of the further scheme has the beneficial effects that when the angle of the dihedral angle formed by the left and right oblique planes and the arc-shaped oblique planes corresponding to the section of the tip end and the section of the tail end is 120-150 degrees, the left and right oblique planes have the strongest effect of increasing the sharpness of the needle point and are easy to cut and process.

Further, the ratio of the lengths of the tip section, the transition section and the tail section is 0.45-0.55: 1: 1.

the needle tip has the beneficial effects that the sharpness of the needle tip can be enhanced while the better strength of the needle tip can be ensured in the length proportion range. It should be noted that, during the length measurement, the midpoint of the edge of the corresponding dihedral angle is taken as the dividing point of the two adjacent tangent surface segments.

Further, the ratio of the lengths of the tip section, the transition section and the tail section is 0.50: 1: 1.

the needle tip sharpness and processing suitability under the specific length proportion are best through tests.

Compared with the prior art, the beneficial effects of the utility model are that:

1) compared with the single-tangent-plane or double-tangent-plane needle point part in the prior art, the utility model changes the cutting angle and increases the cutting times on the design of the needle point, the area of each single tangent plane of the needle point part is small, the gradient is small and gentler, the needle point is finer and sharper under the same caliber and length, the skin puncture is easier, the wound is small and the pain is reduced;

2) transition tangent plane section comprises left scarf and the right scarf that left and right sides symmetry set up, for the mode of the vertical undercut of side about adopting (syringe needle body level is placed about, the vertical undercut of tangent plane about, it can not be in the cutting operation who contacts the department with tail end tangent plane section and form the closed angle, need not to eliminate the closed angle, so process more conveniently.

Drawings

Fig. 1 is a shaft measuring and indicating view of the multi-surface multi-angle cutting needle provided by the utility model.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a needle body; 10. cutting the section of the tip end; 20. a transition section; 30. cutting a section at the tail end; 201. a left chamfer; 202. and (4) a right chamfer.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, if terms indicating orientation such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the utility model provides a multiaspect multi-angle cutting syringe needle, it includes syringe needle body 1, the front end pinpoint portion of syringe needle body 1 is formed with most advanced tangent plane section 10, transition tangent plane section 20 and tail end tangent plane section 30 in the past backward in proper order the cutting, most advanced tangent plane section 10 and tail end tangent plane section 30 are circular-arc chamfer and two circular-arc chamfers in the coplanar respectively, transition tangent plane section 20 comprises left chamfer 201 and right chamfer 202 that the symmetry set up, left chamfer 201 and right chamfer 202 are located circular-arc chamfer place planar below, left chamfer 201 and right chamfer 202 respectively with form the dihedral angle just between the circular-arc chamfer the dihedral angle is the obtuse angle.

Further, the length ratio of the tip section 10, the transition section 20 and the tail section 30 is 0.45-0.55: 1: 1.

further, the length ratio of the tip section 10, the transition section 20 and the tail section 30 is 0.50: 1: 1.

it should be noted that, when each cutting segment is used for length measurement, the midpoint of the edge of the corresponding dihedral angle is taken as the boundary point of two adjacent tangent segments.

In addition, it should be pointed out and understood by those skilled in the art that the left chamfer and the right chamfer respectively may not be a single plane as shown in fig. 1, for example, besides the single left chamfer pattern in fig. 1, the left chamfer may also be composed of two or more sections of chamfers, a dihedral angle is formed between adjacent chamfers, the front portion of the foremost section of the chamfers and the circular arc chamfer of the tip section of the chamfer form a dihedral angle, the rear portion of the last section of the chamfers and the circular arc chamfer of the tail section of the chamfer form a dihedral angle, and similarly, the right chamfer and the left chamfer of the above structure should also be included in the protection scope of the present invention.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a multiaspect multi-angle cutting syringe needle, a serial communication port, including syringe needle body (1), the front end pinpoint portion of syringe needle body (1) is from the past to cutting in proper order and is formed with most advanced tangent plane section (10), transition tangent plane section (20) and tail end tangent plane section (30), most advanced tangent plane section (10) and tail end tangent plane section (30) are circular-arc chamfer and two circular-arc chamfers in the coplanar respectively, transition tangent plane section (20) comprise left chamfer (201) and right chamfer (202) that the symmetry set up, left side chamfer (201) and right chamfer (202) are located circular-arc chamfer place planar below, left side chamfer (201) and right chamfer (202) respectively with form the dihedral angle just between the circular-arc chamfer the dihedral angle is the obtuse angle.

2. The multi-faced, multi-angle cutting needle of claim 1, wherein the dihedral angle corresponds to an obtuse angle of 120-150 degrees.

3. The multi-faceted multi-angle cutting needle according to claim 1 or 2, wherein the ratio of the lengths of said tip section (10), transition section (20) and tail section (30) is 0.45-0.55: 1: 1.

4. the multi-faceted multi-angle cutting needle according to claim 3, wherein the ratio of the lengths of said tip section (10), transition section (20) and tail section (30) is 0.50: 1: 1.