IP Library › Granted Patent US 12,521,495
Granted Patent B2
US 12,521,495 · App. 18/396,924 · Granted Jan 13, 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 12,521,495
App. No.
18/396,924
Granted
Jan 13, 2026
Kind
B2
Abstract

A needle-based device includes a needle shield encompassing an entirety of a length of a needle protruding from a body associated with the needle-based device to protect the needle in a first state of disuse of the needle-based device. The needle shield also includes a lock button with a first end either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield. The lock button includes a hook at a second end thereof. A length of the lock button is completely external to the needle shield, and the needle shield is locked using the lock button in the first state of disuse of the needle-based device in accordance with the hook of the lock button passing through a groove formed on the needle shield.

Claims (63)

1 . A needle-based device comprising:

a needle shield encompassing an entirety of a length of a needle protruding from a body associated with the needle-based device to protect the needle in a first state of disuse of the needle-based device,

wherein the needle shield is retracted in a first direction toward the body to apply a first force in the first direction to cause the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof; and

a lock button with a first end either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield, the lock button comprising a hook at a second end thereof,

wherein a length of the lock button is completely external to the needle shield, and

wherein the needle shield is locked using the lock button in the first state of disuse of the needle-based device in accordance with the hook of the lock button passing through a groove formed on the needle shield such that, during 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 entirety of the 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 entirety of the protruding length of the needle.

2 . The needle-based device of claim 1 , wherein the needle-based device is transitioned back to the first state of disuse thereof following the second state of use in accordance with applying a second force in a second direction diametrically opposite to the first direction.

3 . The needle-based device of claim 1 , wherein the needle shield is coupled to the body by way of wings on lateral sides of the body to securedly maintain the encompassing of the entirety of the protruding length of the needle by the needle shield in the first state of disuse of the needle-based device.

4 . The needle-based device of claim 3 , wherein the coupling between the needle shield and the body occurs by way of the wings and one of: a connector and a ring on an outer wall of the body.

5 . The needle-based device of claim 1 , further comprising at least one of:

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

6 . The needle-based device of claim 5 , wherein, upon removing the external cap from the needle-based device, the needle-based device is transitioned back to the first state of disuse thereof following the second state of use in accordance with applying a second force in a second direction diametrically opposite to the first direction.

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

a spring resting on the body 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.

8 . The needle-based device of claim 1 , wherein the hook of the lock button further directly locks on to a top of the body to lock the needle shield in the first state of disuse of the needle-based device.

9 . A needle-based device comprising:

a body;

a needle shield encompassing an entirety of a length of a needle protruding from the body to protect the needle in a first state of disuse of the needle-based device,

wherein the needle shield is retracted in a first direction toward the body to apply a first force in the first direction to cause the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof; and

a lock button with a first end either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield, the lock button comprising a hook at a second end thereof,

wherein a length of the lock button is completely external to the needle shield,

wherein the needle shield is locked using the lock button in the first state of disuse of the needle-based device in accordance with the hook of the lock button passing through a groove formed on the needle shield such that, during 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 entirety of the 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 entirety of the protruding length of the needle, and

wherein the body comprises one of: a needle mount coupled to a barrel associated with the needle-based device, and the barrel associated with the needle-based device.

10 . The needle-based device of claim 9 , wherein the hook of the lock button further directly locks on to a top of the body to lock the needle shield in the first state of disuse of the needle-based device.

11 . The needle-based device of claim 9 , wherein the needle-based device is transitioned back to the first state of disuse thereof following the second state of use in accordance with applying a second force in a second direction diametrically opposite to the first direction.

12 . The needle-based device of claim 9 , wherein the needle shield is coupled to the body by way of wings on lateral sides of the body to securedly maintain the encompassing of the entirety of the protruding length of the needle by the needle shield in the first state of disuse of the needle-based device.

13 . The needle-based device of claim 12 , wherein the coupling between the needle shield and the body occurs by way of the wings and one of: a connector and a ring on an outer wall of the body.

14 . The needle-based device of claim 9 , further comprising at least one of:

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

15 . The needle-based device of claim 9 , wherein;

the needle-based device further comprises a spring resting on the body to additionally encompass the entirety of the protruding length of the needle in the first state of disuse of the needle-based device, the needle shield encompassing 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.

16 . A needle-based device comprising:

a body;

a needle protruding from the body for a length thereof;

a needle shield encompassing an entirety of the protruding length of the needle to protect the needle in a first state of disuse of the needle-based device,

wherein the needle shield is retracted in a first direction toward the body to apply a first force in the first direction to cause the needle to emerge out of the needle shield to prepare the needle-based device for a second state of use thereof; and

a lock button with a first end either integrally formed with the needle shield or external to the needle shield and then coupled to the needle shield, the lock button comprising a hook at a second end thereof,

wherein a length of the lock button is completely external to the needle shield, and

wherein the needle shield is locked using the lock button in the first state of disuse of the needle-based device in accordance with the book of the lock button passing through a groove formed on the needle shield and further directly locking on to a top of the body such that, during 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 entirety of the 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 entirety of the protruding length of the needle.

17 . The needle-based device of claim 16 , wherein the needle-based device is transitioned back to the first state of disuse thereof following the second state of use in accordance with applying a second force in a second direction diametrically opposite to the first direction.

18 . The needle-based device of claim 16 , further comprising at least one of:

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

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

the needle-based device further comprises a spring resting on the body to additionally encompass the entirety of the protruding length of the needle in the first state of disuse of the needle-based device, the needle shield encompassing 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.

20 . The needle-based device of claim 16 , wherein the body comprises one of:

a needle mount coupled to a barrel associated with the needle-based device, and the barrel associated with the needle-based device.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 29, 2023
From: MOLEDA, JAROSLAW; ZURAWICZ, MACIEJ; GRZELAK, ROBERT
To: MEDIVENA SP. Z O.O.
Reel/Frame 065977/0247 →
Continuity (8)
Continuation 18395465 · Dec 22, 2023
Continuation 18223294 · Jul 18, 2023
Continuation In Part 18221848 · Jul 13, 2023
Continuation In Part 17494904 · Oct 6, 2021
Continuation 17234793 · Apr 19, 2021
Continuation 16831824 · Mar 27, 2020
Continuation In Part 16831824 · Mar 27, 2020
Related Publication 20240123157A1 · Apr 18, 2024
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