IP Library › Granted Patent US 12,527,919
Granted Patent B2
US 12,527,919 · App. 18/395,465 · Granted Jan 20, 2026

Needle-based device with external safety cap and a needle guide element thereof

Inventors: Jaroslaw Moleda (Warsaw, PL); Maciej Zurawicz (Łódź, PL); Robert Grzelak (Warsaw, PL)
A61M5/3202A61M5/3129A61M5/3148A61M5/31571A61M5/3234A61M5/3243A61M5/3257A61M5/326A61M5/3271A61M2005/2073
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Quick Facts
Patent No.
US 12,527,919
App. No.
18/395,465
Granted
Jan 20, 2026
Kind
B2
Abstract

A needle-based device includes a needle-shield that encompasses an entirety of a length of a needle protruding from a body associated with the needle-based device or a needle mount coupled to the body, and an external cap that completely encompasses the needle shield in the first state of disuse of the needle-based device. The needle-based device also includes a guide element protruding inward from an end of the external cap farthest away from the body or the needle mount. The guide element is internal to the external cap, parallel to a length of the external cap and extends through the needle shield such that, in the state of disuse, the guide element at least partially envelops the needle therewithin to prevent significant lateral movement of the needle and prevents the end of the external cap from touching the needle.

Claims (75)

1 . A needle-based device comprising:

a body;

a needle protruding for a length thereof from one of: the body and a needle mount coupled to the body;

a needle shield to encompass an entirety of the protruding length of the needle in a first state of disuse of the needle-based device;

an external cap to completely encompass the needle shield in the first state of disuse of the needle-based device; and

a guide element protruding inward from an end of the external cap farthest away from the one of: the body and the needle mount, the guide element being internal to the external cap, parallel to a length of the external cap, and extending through the needle shield such that, in the first state of disuse of the needle-based device,

the guide element at least partially envelops the needle therewithin to prevent significant lateral movement of the needle, an inner cross-sectional width of the guide element internal to the external cap being significantly less than that of the needle shield and only slightly more than an external cross-sectional width of the needle to prevent the significant lateral movement of the needle, and

to prevent the end of the external cap from which the guide element protrudes internal thereto from touching the needle, a length of the guide element protruding from the end of the external cap internal thereto is more than the entire protruding length of the needle but less than a sum of the entire protruding length of the needle, a first distance between an end of the needle farthest away from the one of; the body and the needle mount and an end of the needle shield farthest away from the one of: the body and the needle mount and a second distance related to a clearance space between the end of the needle shield farthest away from the one of: the body and the needle mount and the end of the external cap from which the guide element protrudes internal thereto,

wherein the body is a barrel of the needle-based device.

2 . The needle-based device of claim 1 , further comprising:

a spring resting on the one of the body and the needle mount to additionally encompass the entirety of the protruding length of the needle in the first state of disuse of the needle-based device,

wherein the needle shield encompasses an entirety of the length of the spring in addition to the entirety of the protruding length of the needle in the first state of disuse of the needle-based device.

3 . The needle-based device of claim 2 , wherein, upon removing the external cap from the needle-based device,

retracting the needle shield in a first direction toward the one of; the body and the needle mount to compress the spring that applies a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof.

4 . The needle-based device of claim 1 , further comprising:

a lock button with a first end, the first end is either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield, and a length of the lock button is completely external to the needle shield,

wherein the needle shield is locked with the lock button in the first state of disuse of the needle-based device based on:

the lock button comprising a hook at a second end thereof that passes through a groove formed on the needle shield and locks onto a top of the one of: the body and the needle mount such that, in a state of the locking of the needle shield:

the length of the lock button completely external to the needle shield is parallel to a length of the needle shield and the entire protruding length of the needle, and

the hook is perpendicular to the length of the needle shield, the length of the lock button and the entire protruding length of the needle, and

wherein the external cap completely encompasses the lock button within in the first state of disuse of the needle-based device.

5 . The needle-based device of claim 4 , wherein, upon removing the external cap from the needle-based device:

the needle shield is unlocked based on unhooking the lock button from the top of the one of: the body and the needle mount, and

retracting the needle shield in a first direction toward the one of: the body and the needle mount to apply a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof.

6 . The needle-based device of claim 1 , wherein, upon removing the external cap from the needle-based device:

retracting the needle shield in a first direction toward the one of: the body and the needle mount to apply a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof.

7 . The needle-based device of claim 6 , wherein application of a second force in a second direction diametrically opposite to the first direction automatically transitions the needle-based device back to the first state of disuse thereof immediately following the second state of use.

8 . A needle-based device comprising:

a body;

a needle shield to, in a first state of disuse of the needle-based device, encompass an entirety of a needle protruding for a length thereof from one of: the body and a needle mount coupled to the body;

an external cap to completely encompass the needle shield in the first state of disuse of the needle-based device; and

a guide element protruding inward from an end of the external cap farthest away from the one of: the body and the needle mount, the guide element being internal to the external cap, parallel to a length of the external cap, and extending through the needle shield such that, in the first state of disuse of the needle-based device,

the guide element at least partially envelops the needle therewithin to prevent significant lateral movement of the needle, an inner cross-sectional width of the guide element internal to the external cap being significantly less than that of the needle shield and only slightly more than an external cross-sectional width of the needle to prevent the significant lateral movement of the needle, and

to prevent the end of the external cap from which the guide element protrudes internal thereto from touching the needle, a length of the guide element protruding from the end of the external cap internal thereto is more than the entire protruding length of the needle but less than a sum of the entire protruding length of the needle, a first distance between an end of the needle farthest away from the one of: the body and the needle mount and an end of the needle shield farthest away from the one of: the body and the needle mount and a second distance related to a clearance space between the end of the needle shield farthest away from the one of: the body and the needle mount and the end of the external cap from which the guide element protrudes internal thereto,

wherein the needle-based device is at least one of: a hypodermic syringe, a hypodermic needle, a pen injector and a fluid collection device.

9 . The needle-based device of claim 8 , further comprising:

a spring resting on the one of: the body and the needle mount to additionally encompass the entirety of the protruding length of the needle in the first state of disuse of the needle-based device,

wherein the needle shield encompasses an entirety of the length of the spring in addition to the entirety of the protruding length of the needle in the first state of disuse of the needle-based device.

10 . The needle-based device of claim 9 , wherein, upon removing the external cap from the needle-based device,

retracting the needle shield in a first direction toward the one of; the body and the needle mount to compress the spring that applies a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof.

11 . The needle-based device of claim 8 , further comprising:

a lock button with a first end, the first end is either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield, and a length of the lock button is completely external to the needle shield,

wherein the needle shield is locked with the lock button in the first state of disuse of the needle-based device based on:

the lock button comprising a hook at a second end thereof that passes through a groove formed on the needle shield and locks onto a top of the one of: the body and the needle mount such that, in a state of the locking of the needle shield:

the length of the lock button completely external to the needle shield is parallel to a length of the needle shield and the entire protruding length of the needle, and

the hook is perpendicular to the length of the needle shield, the length of the lock button and the entire protruding length of the needle, and wherein the external cap completely encompasses the lock button within in the first state of disuse of the needle-based device.

12 . The needle-based device of claim 11 , wherein, upon removing the external cap from the needle-based device:

the needle shield is unlocked based on unhooking the lock button from the top of the one of: the body and the needle mount, and

retracting the needle shield in a first direction toward the one of: the body and the needle mount to apply a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof.

13 . The needle-based device of claim 8 , wherein, upon removing the external cap from the needle-based device:

retracting the needle shield in a first direction toward the one of: the body and the needle mount to apply a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof.

14 . The needle-based device of claim 13 , wherein application of a second force in a second direction diametrically opposite to the first direction automatically transitions the needle-based device back to the first state of disuse thereof immediately following the second state of use.

15 . The needle-based device of claim 8 , wherein;

the body is a barrel thereof.

16 . A needle-based device comprising:

a needle shield to, in a first state of disuse of the needle-based device, encompass an entirety of a length of a needle protruding from one of: a body associated with the needle-based device and a needle mount coupled to the body:

an external cap to completely encompass the needle shield in the first state of disuse of the needle-based device; and

a guide element protruding inward from an end of the external cap farthest away from the one of: the body and the needle mount, the guide element being internal to the external cap, parallel to a length of the external cap, and extending through the needle shield such that, in the first state of disuse of the needle-based device,

the guide element at least partially envelops the needle therewithin to prevent significant lateral movement of the needle, an inner cross-sectional width of the guide element internal to the external cap being significantly less than that of the needle shield and only slightly more than an external cross-sectional width of the needle to prevent the significant lateral movement of the needle, and

to prevent the end of the external cap from which the guide element protrudes internal thereto from touching the needle, a length of the guide element protruding from the end of the external cap internal thereto is more than the entire protruding length of the needle but less than a sum of the entire protruding length of the needle, a first distance between an end of the needle farthest away from the one of: the body and the needle mount and an end of the needle shield farthest away from the one of: the body and the needle mount and a second distance related to a clearance space between the end of the needle shield farthest away from the one of: the body and the needle mount and the end of the external cap from which the guide element protrudes internal thereto.

17 . The needle-based device of claim 16 , further comprising:

a spring resting on the one of: the body and the needle mount to additionally encompass the entirety of the protruding length of the needle in the first state of disuse of the needle-based device,

wherein the needle shield encompasses an entirety of the length of the spring in addition to the entirety of the protruding length of the needle in the first state of disuse of the needle-based device.

18 . The needle-based device of claim 17 , wherein, upon removing the external cap from the needle-based device,

retracting the needle shield in a first direction toward the one of: the body and the needle mount to compress the spring that applies a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof.

19 . The needle-based device of claim 16 , further comprising:

a lock button with a first end, the first end is either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield, and a length of the lock button is completely external to the needle shield,

wherein the needle shield is locked with the lock button in the first state of disuse of the needle-based device based on:

the lock button comprising a hook at a second end thereof that passes through a groove formed on the needle shield and locks onto a top of the one of: the body and the needle mount such that, in a state of the locking of the needle shield:

the length of the lock button completely external to the needle shield is parallel to a length of the needle shield and the entire protruding length of the needle, and

the hook is perpendicular to the length of the needle shield, the length of the lock button and the entire protruding length of the needle, and

wherein the external cap completely encompasses the lock button within in the first state of disuse of the needle-based device.

20 . The needle-based device of claim 16 , wherein, upon removing the external cap from the needle-based device, at least one of:

retracting the needle shield in a first direction toward the one of: the body and the needle mount to apply a first force in the first direction causes the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof, and

application of a second force in a second direction diametrically opposite to the first direction automatically transitions the needle-based device back to the first state of disuse thereof immediately following the second state of use.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 2, 2024
From: MOLEDA, JAROSLAW; ZURAWICZ, MACIEJ; GRZELAK, ROBERT
To: MEDIVENA SP. Z O.O.
Reel/Frame 065990/0245 →
Continuity (7)
Continuation 18223294 · Jul 18, 2023
Continuation In Part 18221848 · Jul 13, 2023
Continuation In Part 17494904 · Oct 6, 2021
Continuation 16831824 · Mar 27, 2020
Continuation 17234793 · Apr 19, 2021
Continuation In Part 16831824 · Mar 27, 2020
Related Publication 20240139423A1 · May 2, 2024
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