The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The distal abutment surface is located on a reduced thickness portion of the needle cover.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The bump has a cantilevered portion.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user’s activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The body has a first axial slot extending from a distal end of the body, and the bump is circumferentially distant from said first axial slot.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, and the device includes only two bumps protruding from the body, the two bumps having a proximal abutment surface, the distal abutment surface of the needle cover abutting against the proximal abutment surface of these only two bumps in the retracted position of the needle cover.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The body has a first axial slot extending from a distal end of said body, the first axial slot having a predetermined length comprised between [1-6] mm.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user’s activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The bump of the body has a first end, an opposite second end, and a decreasing height from said second end to said first end.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. At least one of the proximal abutment surface and the distal abutment surface includes a chamfer configured to ease passage of the needle cover over the bump of the body when the needle cover moves distally to the extended position.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The distal abutment surface of the needle cover is located on a radial protrusion, and the radial protrusion has reinforcing means configured to reinforce a proximal side of this radial protrusion.

The present disclosure relates to the technical field of medical instruments, in particular to an automatically-triggered needle protector and an insulin pen needle. The automatically-triggered needle protector at least includes a needle hub, a protective sleeve, a shield, a spring and a support part. The support part at least includes an initial state and a support state and is configured to be switched into the support state from the initial state. In the initial state, a support base body of the support part is in contact with an upper end of the needle hub, and a circumferential limiting mechanism is arranged between the support base body and a needle body installation portion; and in the support state, the support part disengages from sliding grooves, and lower ends of support arms are located above support surfaces. In the above structure, the shield is automatically triggered, a secondary operation is not needed in a protection process, and the operation is simple, convenient, and fast; and the support part is located on an inner side and supported in a space between the shield and the needle hub in an axial direction, support safety and reliability are better, and meanwhile, a protection state of a needle is not likely to be damaged from outside, thereby effectively preventing secondary usage of the insulin pen needle.

A injection-needle cover includes an injection needle enclosure portion, which has paired base-side wall portions, a cylinder portion, paired tip-end-side wall portions, an injection needle contact portion, a hook portion, and a needle tip end fixing portion. The injection needle contact portion is disposed at a position in a base-side axial space, which is a boundary between the base-side axial space and an intra-cylinder space. The injection needle contact portion has a force receiving portion and a connecting portion. The force receiving portion receives a force from the injection needle when the force receiving portion comes in contact with the injection needle. The force receiving portion has an easy sliding portion, which is disposed in an area adjacent to an injection needle, and slides more easily along the injection needle than a case where an edge slides along the injection needle.