Subcutaneous needle

Abstract

The present invention relates to a type of medical instrument, in particular a fifth generation FSN needle, being a special tool for Fu's subcutaneous needling (FSN), comprising a needle handle, a needle core, a soft casing pipe and its handle, and a protective sleeve. The needle core is fixed on top part of the needle handle and consists of a needle core body and a needle core tip. On top part of the needle handle, a round-hole-type groove is provided. On this groove, a positioning notch is provided, including first longitudinal position point, and inlet and second longitudinal position point at two sides of the first longitudinal position point. The soft casing pipe handle is a round tube that can be inserted into said groove. On the soft casing pipe handle, a first bulge and second bulges are provided: the first bulge is used to fix the soft casing pipe and its handle; the second bulges are used to prompt sweep position.

Claims

1. A subcutaneous needle, comprising a steel needle handle, a needle core, a soft casing pipe and its handle, and a protective sleeve; wherein: said needle core is fixed on a top part of said needle handle and includes a needle core body and a needle core tip, wherein the needle handle and the needle core are coupled along a longitudinal axis; a circumferential groove is provided on the top part of said needle handle and surrounds and extends along the longitudinal axis of the needle handle to position the soft casing pipe and its handle, and the top part of said needle handle penetrates through the circumferential groove along the longitudinal axis and further includes a positioning notch connecting to the circumferential groove and including a first longitudinal position point, an inlet extending along the longitudinal axis of the needle handle and a second longitudinal position point, wherein the inlet, the first longitudinal position point and the second longitudinal position point are arranged in a latitudinal distribution surrounding the longitudinal axis, wherein the inlet and the second longitudinal position point are respectively located at two sides of the first longitudinal position point according to the longitudinal axis, and wherein the first longitudinal position point and the second longitudinal position point are directly connected to the inlet, wherein the first longitudinal position point and the second longitudinal position point overlap with each other in the latitudinal distribution; said soft casing pipe handle is a round tube that is accommodated by the circumferential groove and a first bulge is provided on a circumferential surface of an end of said soft casing pipe handle; when said first bulge is at said first longitudinal position point, said needle core tip extends from said soft casing pipe; when said first bulge is at said second longitudinal position point, said needle core tip is partially or fully hidden in said soft casing pipe.

2. The subcutaneous needle of claim 1, wherein said first bulge coincides with a shape of said first longitudinal position point and with a shape of said second longitudinal position point.

3. The subcutaneous needle of claim 1, wherein a second bulge is provided on said soft casing pipe handle.

4. The subcutaneous needle of claim 1, wherein anti-slip points are provided on at least one surface of said steel needle handle.

Description

DESCRIPTION OF DRAWING FIGURES

(1) FIG. 1 is a schematic of overall structure of preferred embodiment of this invention.

(2) FIG. 2 is a front view of preferred embodiment of this invention.

(3) FIG. 3 shows a left view and a right view of preferred embodiment of this invention.

(4) In these figures: 1—steel needle handle, 2—needle core, 3—soft casing pipe and its handle, 6—positioning notch, 7—anti-slip points, 8—inlet, 9—first position point, 10—second position point, 11—soft casing pipe, 12—soft casing pipe handle, 13—first bulge, 14—second bulge

PREFERRED EMBODIMENT

(5) The following describes this invention in details in combination with the drawing figures and a preferred embodiment.

(6) A fifth generation FSN needle shown in FIG. 1-3, comprising a steel needle handle 1, a needle core 2, a soft casing pipe and its handle 3, and a protective sleeve, wherein:

(7) the needle core 2 is fixed on top part of the steel needle handle 1 and consists of a needle core body and a needle core tip;

(8) on top part of the steel needle handle 1, a round-hole-type groove is provided, and on this groove, a positioning notch 6 is provided, including first longitudinal position point 9, and inlet 8 and second longitudinal position point 10 at two sides of the first longitudinal position point 9;

(9) width of the part connecting second position point 10 with first position point 9 is equivalent to width of first bulge 13;

(10) soft casing pipe and its handle 3 includes soft casing pipe 11 and soft casing pipe handle 12, with soft casing pipe handle 12 being a round tube that can be inserted into the round-hole-type groove;

(11) on soft casing pipe handle 12, first bulge 13 is provided and coincides with shape of first position point 9 and second position point 10;

(12) two second bulges 14 are symmetrically provided on soft casing pipe handle 12 extending from the round-hole-type groove.

(13) As a preference, first bulge 13 has the shape of transverse strip and second bulge 14 has the shape of longitudinal strip.

(14) First, first bulge 13 is at first position point 9. At this time, the needle core tip extends out of soft casing pipe and its handle 3. Pierce FSN needle into skin, and then pull steel needle handle 1 and rotate soft casing pipe and its handle 3, to place first bulge in second position point 10 and hide needle core tip in soft casing pipe and its handle 3.

(15) Anti-slip points 7 are provided on the face of the steel needle handle 1 consistent with the bevel face, and both this face and its opposite face are concave, to facilitate holding by hand and exerting force.

(16) This preferred embodiment is only a good example of this invention and not intended to limit this invention. Any modification, equivalent replacement, or improvement within the concept and principle of this invention shall be included in the scope of protection of this invention.