Method for manufacturing insertion guide needle for continuous blood glucose monitoring device
The present disclosure relates to a method for manufacturing an insertion guide needle for a continuous blood glucose monitoring device. The present disclosure provides a method for manufacturing an insertion guide needle for a continuous blood glucose monitoring device, by which: an insertion guide needle can be manufactured through a cutting process and a bending process of a needle raw plate, so that a complicated manufacturing process is unnecessary, and can thus be easily manufactured through a simple process; an enlargement incision part for continuous enlargement and incision, etc. can be conveniently manufactured through such a simple processing process, so that a manufacturing cost thereof can be reduced and also the size accuracy of the insertion guide needle can be improved; and, particularly, in a process of inserting the insertion guide needle into skin, the insertion guide needle can be brought into point contact with the skin to cut the skin, and then can continuously cut the skin in an enlarged manner, so as to minimize pains which may occur in the process of inserting the insertion guide needle into the skin, thereby alleviating the sense of repulsion or tension at the time of using the continuous blood glucose monitoring device.
1. A method for manufacturing an insertion guide needle covering an outside of a body insertion section of a sensor unit to guide body insertion of the sensor unit for a continuous blood glucose monitoring device configured to be inserted into a body and measure blood glucose and being inserted into the body together with the sensor unit, the method comprising:
(a) preparing needle original plate of metal material lengthily formed along a direction of the body insertion;
(b) cutting a front end portion of the needle original plate to form an enlargement incision part configured to enlarge an incised portion of skin of the body as the insertion guide needle is being inserted into the body, wherein a front end portion of the enlargement incision part forms a dot point tip in a structure of point-contacting with the skin of the body; and
(c) bending both end side portions with respect to a width direction of the cut needle original plate after the step (b),
wherein the step (b) comprises:
first-cutting the needle original plate to form a first slanted surface in a direction of crossing with a length direction center axis passing an upper surface of the needle original plate; and
second-cutting the needle plate to form a second slanted surface in a direction of being symmetric to the first slanted surface with respect to the length direction center axis of the needle original plate,
wherein the first slanted surface and the second slanted surface are formed to be slanted in a direction of being away from a virtual plate comprising the length direction center axis of the needle original plate and the dot point tip as being toward a bottom of the needle original plate.
2. The method for manufacturing the insertion guide needle for the continuous blood glucose monitoring device according to claim 1 , wherein one crossing point in which the first slanted surface, the second slanted surface and the length direction center axis of the needle original plate cross each other is positioned at a position away from the front end portion of the needle original plate at a certain distance.
3. The method for manufacturing the insertion guide needle for the continuous blood glucose monitoring device according to claim 2 ,
wherein the step (b) forms a point tip edge line along a crossing line in which the first slanted surface and the second slanted surface cross each other symmetrically with respect to the length direction center axis of the needle original plate, and performs so that the dot point tip is formed at a front end portion of the point tip edge line.
4. The method for manufacturing the insertion guide needle for the continuous blood glucose monitoring device according to claim 1 ,
wherein the step (c) is performed through a press forming processing.
5. The method for manufacturing the insertion guide needle for the continuous blood glucose monitoring device according to claim 4 ,
wherein the step (c) is performed to sequentially form a point tip portion, a variation portion, and a connection portion from a front end portion to a back side of the enlargement incision part at the enlargement incision part,
the point tip portion is enlarged in the width direction of the needle original plate as being from the dot point tip to a back so as to enlarge the incised portion of the skin of the body in a direction corresponding to the point tip portion,
the variation portion is enlarged in the width direction of the needle original plate and then in a thickness direction as being toward the back so as to enlarge the incised portion of the skin of the body in a direction corresponding to the variation portion, and
the connection portion is enlarged in the thickness direction of the needle original plate as being toward the back so as to enlarge the incised portion of the skin of the body in a direction corresponding to the connection portion.