Sensor devices including dissolvable tissue-piercing tips are provided. The sensor devices can be used in conjunction with dissolvable needles configured for inserting the sensor devices into a host. Hardening agents for strengthening membranes on sensor devices are also provided. Methods of using and fabricating sensor devices are also provided.

A medical puncture needle includes a rod-shaped main body portion; and a blade surface formed at a distal end portion of the main body portion. The blade surface includes a first blade surface portion and a second blade surface portion that intersect to form a blade edge. A needle tip is formed at a location at which a distal end of the blade edge intersects a first ridge line at an outer edge of the first blade surface and a second ridge line at an outer edge of the second blade surface. At least one of the blade surface portions is planar, and, in a central axis direction of the main body portion, said at least one blade surface portion extends to a location proximal of a middle position of a blade surface region in which the blade surface is formed.

A medical puncture needle includes an end portion including a needle tip; and a main body portion contiguous with the end portion, having a substantially circular cross-sectional outer shape. The end portion includes a first bevel formed by a curved surface, the bevel having an angle that gradually decreases toward the needle tip in an axial direction, in a cross-section orthogonal to the axial direction, relative to an imaginary plane that extends along an axis of the main body portion.

A medical puncture needle includes an end portion including a needle tip; and a main body portion contiguous with the end portion, having a substantially circular cross-sectional outer shape. The end portion includes a first bevel formed by a curved surface, the bevel having an angle that gradually decreases toward the needle tip in an axial direction, in a cross-section orthogonal to the axial direction, relative to an imaginary plane that extends along an axis of the main body portion.

A medical puncture needle includes a rod-shaped main body portion; and a blade surface formed at a distal end portion of the main body portion. The blade surface includes a first blade surface portion and a second blade surface portion that intersect to form a blade edge. A needle tip is formed at a location at which a distal end of the blade edge intersects a first ridge line at an outer edge of the first blade surface and a second ridge line at an outer edge of the second blade surface. At least one of the blade surface portions is planar, and, in a central axis direction of the main body portion, said at least one blade surface portion extends to a location proximal of a middle position of a blade surface region in which the blade surface is formed.

Sensor devices including dissolvable tissue-piercing tips are provided. The sensor devices can be used in conjunction with dissolvable needles configured for inserting the sensor devices into a host. Hardening agents for strengthening membranes on sensor devices are also provided. Methods of using and fabricating sensor devices are also provided.

Sensor devices including dissolvable tissue-piercing tips are provided. The sensor devices can be used in conjunction with dissolvable needles configured for inserting the sensor devices into a host. Hardening agents for strengthening membranes on sensor devices are also provided. Methods of using and fabricating sensor devices are also provided.

A medical puncture needle includes an end portion including a needle tip; and a main body portion contiguous with the end portion, having a substantially circular cross-sectional outer shape. The end portion includes a first bevel formed by a curved surface, the bevel having an angle that gradually decreases toward the needle tip in an axial direction, in a cross-section orthogonal to the axial direction, relative to an imaginary plane that extends along an axis of the main body portion.

A medical puncture needle includes an end portion including a needle tip; and a main body portion contiguous with the end portion, having a substantially circular cross-sectional outer shape. The end portion includes a first bevel formed by a curved surface, the bevel having an angle that gradually decreases toward the needle tip in an axial direction, in a cross-section orthogonal to the axial direction, relative to an imaginary plane that extends along an axis of the main body portion.

Sensor devices including dissolvable tissue-piercing tips are provided. The sensor devices can be used in conjunction with dissolvable needles configured for inserting the sensor devices into a host. Hardening agents for strengthening membranes on sensor devices are also provided. Methods of using and fabricating sensor devices are also provided.