Insertion guide needle for continuous blood glucose monitoring device
The present disclosure relates to an insertion guide needle for a continuous glucose monitoring system. The insertion guide needle makes an incision in the skin by point-contacting with the skin during a skin insertion process, and allows expanded incision of the skin continuously thereafter. During a process of expanded incision of the skin, the insertion guide needle allows expanded incision continuously and gradually in the width direction and thickness direction. In addition, during the expanded incision process, since the entire incision area is formed by an incision, the insertion guide needle is simply inserted along the incision area after a predetermined insertion section.
1. An insertion guide needle for a continuous blood glucose monitoring device, which is configured to be inserted into a body together with a sensor unit to guide body insertion of the sensor unit and being extracted and removed from the body after insertion, the insertion guide needle comprising:
an enlargement incision part formed at a front end portion of the insertion guide needle to enlarge an incised portion of skin of the body in a process of being inserted into the body; and
an insertion support part formed to extend at a back end portion of the enlargement incision part in a direction of a first axis to be continuously inserted into the body along the incised portion enlarged by the enlargement incision part,
wherein the enlargement incision part is formed to have a dot point tip of a structure of point-contacting with the skin of the body when a front end portion of the enlargement incision part is being inserted into the body,
wherein the enlargement incision part comprises:
a point tip portion configured to enlarge the incised portion of the skin of the body in a direction of a second axis as being from the dot point tip to a back of the insertion guide needle;
a connection portion configured to enlarge the incised portion of the skin of the body in a direction of a third axis as being toward the back of the insertion guide needle, wherein a back end of the connection portion is connected with the insertion support part; and
a variation portion disposed between the point tip portion and the connection portion, and configured to enlarge the incised portion of the skin of the body by changing an enlargement incision direction from the direction of the second axis to the direction of the third axis as being toward the back of the insertion guide needle,
wherein the point tip portion comprises:
a first portion extended from the dot point tip in the direction of the first axis, and configured to enlarge the incised portion of the skin of the body in the direction of the second axis and in the direction of the third axis as being toward the back of the insertion guide needle, and
a second portion extended from the first portion in the direction of the first axis to be connected to the variation portion, and configured to enlarge the incised portion of the skin of the body only in the direction of the second axis as being toward the back of the insertion guide needle.
2. The insertion guide needle for the continuous blood glucose monitoring device according to claim 1 ,
wherein the insertion support part
is lengthily formed to have a length component along a-the first axis of a front-back direction parallel to a direction of the body insertion, and forms an inner receivable space and has a structure of including a whole one side opened along a-the direction of the first axis, wherein, among the second axis of a width direction perpendicular to the first axis and a-the third axis of a height direction, the one side crosses with the third axis.
3. The insertion guide needle for the continuous blood glucose monitoring device according to claim 1 ,
wherein the point tip portion comprises slanted enlargement surfaces formed to be enlarged in the direction of the second axis as being from the dot point tip toward the back of the insertion guide needle, the slanted enlargement surfaces are formed along the direction of the second axis at both sides with respect to the dot point tip, and the slanted enlargement surfaces are formed to be slanted in a direction of being away from a virtual plane comprising the dot point tip and the first axis as being toward a bottom of the insertion guide needle.
4. The insertion guide needle for the continuous blood glucose monitoring device according to claim 3 ,
wherein a point tip edge line is formed by crossing the slanted enlargement surfaces formed at the both sides of the dot point tip with each other with respect to the dot point tip, and the point tip edge line is formed on the virtual plane comprising the dot point tip and the first axis and is formed to have a structure of upwardly slated as being from the dot point tip to the back of the insertion guide needle.
5. The insertion guide needle for the continuous blood glucose monitoring device according to claim 3 ,
wherein the variation portion comprises variation extension surfaces forming a same plane as the slanted enlargement surfaces at a front end of the variation extension surfaces and extended in the directions of the second axis and the third axis in a structure of continuously changing a direction of which variation extension surfaces face as being toward the back of the insertion guide needle.
6. The insertion guide needle for the continuous blood glucose monitoring device according to claim 5 ,
wherein a surface of a back end of the variation extension surfaces is formed to be slanted in a direction in which a perpendicular upwardly extended from the surface of the back end of the variation extension surfaces is crossed with the virtual plane including the dot point tip and the first axis.
7. The insertion guide needle for the continuous blood glucose monitoring device according to claim 5 ,
wherein the connection portion comprises channel extension surfaces forming a same plane as the variation extension surfaces at a front end of the channel extension surfaces and extended in the direction of the third axis as being toward the back of the insertion guide needle.
8. The insertion guide needle for the continuous blood glucose monitoring device according to claim 7 ,
wherein a whole area of the channel extension surfaces is formed to be slanted in a direction in which a perpendicular upwardly extended from the whole area of the channel extension surfaces is crossed with the virtual plane including the dot point tip and the first axis.
9. The insertion guide needle for the continuous blood glucose monitoring device according to claim 1 ,
wherein the insertion support part is formed in a shape in which both side end portions in a width direction of the insertion support part are upwardly bent with respect to a plate lengthily formed to have a length component along a front-back direction.