US-12623034-B2 - Syringe protector and its safety syringe

US12623034B2US 12623034 B2US12623034 B2US 12623034B2US-12623034-B2

Abstract

The disclosure involves a syringe protector, which is includes of an outer protection sleeve, an inner installation sleeve, and a spring; the spring is installed at the outer sleeve wall of the installed inner installation sleeve, the said spring is compressed and installed in the said outer installation sleeve, and a syringe protector is formed; the said outer installation sleeve is comprised of a inner sleeve cylinder body, and a backstop claw, a guide sliding groove, an inner stop orifice, a spring installation seat, an inner locking claw; the said inner installation sleeve is comprised of an inner cylinder body, and a backstop claw, a guide block, an outer locking claw, a claw frame, a releasing incline, a syringe fixing claw, and a syringe flange fixing channel. The safety syringe described in the disclosure will be installed in the above syringe protector.

Inventors

Jing Wang
Hongxia Zhou
Wei Shen

Assignees

SUZHOU SAVICRED BIOTECHNOLOGY CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20210625
Priority Date: 20200910

Claims (20)

1 . A syringe protector, it is comprised of an outer protection sleeve, an inner installation sleeve, and a spring; the outer wall sleeve of the said inner installation sleeve is installed with the said spring, which is compressed and loaded into the said outer protection sleeve, and the syringe protector is formed; the said outer protection sleeve is comprised of an outer sleeve pipe orifice, an outer sleeve tube body, a guide chute, an inner stop orifice, a spring installation seat, and c; the said outer sleeve pipe orifice is arranged at the bottom of the said outer sleeve tube body; the wall surface of the said outer sleeve tube body is arranged with the said guide chute; the middle of the inner wall of the said outer sleeve tube body is arranged with an inner stop orifice; a spring installation seat is arranged on the top of the said outer sleeve tube body, the bottom diameter of the said spring installation seat is higher than the inner diameter of the said outer sleeve tube body, and the said spring is installed in the spring installation seat; the inner locking jack catch is arranged above the said spring installation seat, and the number of the said inner locking jack catch is minimum 2 pieces and above along the circumference of the said spring installation seat; the said inner installation sleeve is comprised of an inner sleeve tube body, a backstop jaw, a guide block, an outer locking jack catch, a jack catch frame, a releasing slope, a syringe cam fixing jaw, and syringe cam fixing groove; the said inner sleeve tube body is installed at the said outer sleeve tube body, which is used to contain the syringe; the bottom of the said inner sleeve tube body is arranged with the said backstop jaw, which inclines outwards; under natural status before assembling, the concentric circle diameter at the bottom of the said backstop jaw is larger than the inner diameter of the said outer sleeve tube body; a guide block is arranged on the said inner sleeve tube, the said guide block is located at the lower portion of the said inner sleeve tube body and protrudes over the outer wall surface of the inner sleeve tube body; the said guide block is fastened into the said guide chute; the top of the said inner sleeve tube body is arranged with the protector locking mechanism, the protector releasing mechanism, and the syringe fixing mechanism; the locking mechanism of the said protector is comprised of the outer locking jack catch, which is fastened with the said inner locking jack catch to lock the syringe protector; a suspension arm of the outer locking jack catch is fixed on the said jack catch frame; the said releasing mechanism of the protector is comprised of the releasing slope, the said releasing slope is located inside the suspension arm above the said outer locking jack body and below the said jack catch body; the said syringe fixing mechanism is comprised of the syringe cam fixing jaw and a syringe cam fixing groove, the said syringe cam fixing groove is arranged at the top of the said inner sleeve tube body, multiple syringe cam fixing jaws are located above the said syringe cam fixing groove, and the guide slope is installed at the said syringe cam fixing jaws; the said outer protection sleeve is installed with a locking protection piece, which is arranged outside the said inner locking jack catch; and an insertion space for the said outer locking jack catch is reserved between the said inner locking jack catch and the said locking protection piece.
2 . The syringe protector as described in claim 1 , wherein the said outer protection sleeve is installed with a handle rib, the number of which is 2 pieces, which are arranged on the outer wall of the said spring installation seat or the said outer sleeve tube symmetrically.
3 . The syringe protector as described in claim 2 , wherein the bottom of the said handle rib is installed with multiple anti-stripping bars.
4 . The syringe protector as described in claim 1 , wherein an opening of the said outer sleeve pipe orifice inclines inwards and shapes an internal cone.
5 . The syringe protector as described in claim 1 , wherein the number of the said guide chute is 2 pieces and above and is set on the wall surface of the said outer protection sleeve; and the number of the said guide block is 2 pieces and above, which is arranged on the wall surface of the said inner sleeve tube body.
6 . The syringe protector as described in claim 1 , wherein inner side at the bottom of the said installation seat is arranged with multiple spring limit protrusions, and the said multiple spring limit clip protrusions are arranged at the top of the said outer sleeve tube body homogeneously; and the inner diameter of the said spring is clipped into the outside of the limit portions comprised of the said multiple spring limit clip protrusions.
7 . The syringe protector as described in claim 1 , wherein the bottom of the said inner sleeve tube body is arranged with a needle sleeve backstop piece, which inclines inwards; and the concentric circle diameter where the bottom of the said needle backstop piece is less than the inner diameter of the said inner sleeve tube body.
8 . The syringe protector as described in claim 7 , wherein the said the needle sleeve backstop piece and the said backstop jaw are minimum 2 pieces; and the said needle sleeve piece and the said backstop jaw are scattered at the bottom of the said inner sleeve tube body homogeneously and alternatively.
9 . The syringe protector as described in claim 1 , wherein the bottom of the said guide block is communicated with the said inner sleeve tube body through the connecting bar, the upper portion of the said guide block is suspended in air, and the guide block inclines inwards along the said connecting bar.
10 . The syringe protector as described in claim 9 , wherein a window is located at the said inner sleeve tube body where the said guide block is located, and the direction of the said window is corresponding to the direction of the said guide chute.
11 . The syringe protector as described in claim 1 , wherein a piston fixing step is arranged at the lower portion of the said releasing slope and is located inside the suspension arm above the said outer locking jack catch; the said piston fixing step is higher than the top of the said syringe cam fixing jaw.
12 . The syringe protector as described in claim 1 , wherein the said outer protection sleeve and the said inner installation sleeve are installed with the inner locking jack catch and the outer locking jack catch with the left and right limit structures to form a safety snap joint; under natural status, the said outer locking jack catch fastens the said inner locking jack catch inwards; and the body of the said inner locking jack catch contacts the body of the said outer locking jack catch, with left and right limit structures.
13 . The syringe protector as described in claim 12 , wherein both sides of the said outer locking jack catch are installed with the inner jack catch limit body, and an inner jack catch storage groove is formed between the inner jack catch limit body on both sides; under locking status, the said inner locking jack catch is located within the said inner jack catch storage groove; and the said inner jack catch limit body limits the said inner locking jack catch at the left and right directions.
14 . The syringe protector as described in claim 12 , wherein the limit structures at the left and right directions are arranged with the inner jack catch surface fastened with the said outer locking jack catch; both sides of the said inner jack catch are arranged with the outer jack body limit body; and under locking status, the jack catch surface of the said outer locking jack catch is clipped between the outer jack catch limit body on both sides and fastened with the said inner jack catch surface; the said outer jack catch limit body limits the said outer jack catch at the left and right directions.
15 . The syringe protector as described in claim 12 , wherein the said left and right limit structures are, a groove is made in the middle of the jack catch body of the said outer locking jack catch to form the inner jack catch storage groove, and the inner jack catch limit body is arranged on both sides of the jack catch body of the said outer locking jack catch; a convex inner jack catch protrusion is arranged at the lower portion of the jack catch body of the said inner locking jack catch; the width of the said inner jack catch matches the width of the said jack catch storage groove; and under locking status, the said inner locking jack catch contacts the said outer locking jack catch, and the said inner jack catch protrusion is clipped into the said inner jack catch storage groove.
16 . The syringe protector as described in claim 12 , wherein the said left and right limit structure is that, a groove is made in the middle of the said inner locking jack catch to form the outer jack catch storage groove; the outer jack catch protrusion is located below the middle of the said outer locking jack catch; the width of the said outer jack catch matches the width of the said outer jack storage groove; and under locking status, the said inner locking jack catch contacts the said outer locking jack catch, and said outer jack catch protrusion is clipped into the said outer jack catch storage groove.
17 . The syringe protector as described in claim 1 , wherein the outer surface of the outer sleeve tube body of the said outer protection sleeve is free of protrusion; the middle of the inside wall surface of the outer sleeve tube body of the said outer protection sleeve is arranged with a concave inner stop orifice; the bottom of the said inner installation sleeve is installed with a backstop jaw; and the said backstop flicks after activation at the said inner installation sleeve and the said outer protection sleeve and clipped above the said inner stop orifice.
18 . The syringe protector as described in claim 17 , wherein the inside wall surface of the outer sleeve tube body of the said outer protection sleeve is arranged with an inner guide chute, and the said inner stop orifice is located at the said inner guide chute.
19 . The syringe protector as described in claim 18 , wherein the said backstop jaw is locked at the said inner installation sleeve and the said outer protection sleeve, and is stuck in the said inner guide chute.
20 . The syringe protector as described in claim 19 , the said outer protection sleeve is installed with a guide chute; the bottom of the said inner installation sleeve is installed with a guide block; and the said guide block is clipped into the said guide chute.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This Application is a national stage application of PCT/CN2021/102380. This application claims priorities from PCT Application No. PCT/CN2021/102380, filed Jun. 25, 2021, and from the Chinese patent applications 202010946448.8 filed Sep. 10, 2020, 202022824635.7 filed Nov. 30, 2020, and 202120055382.3 filed Jan. 7, 2021, the content of which are incorporated herein in the entirety by reference. TECHNICAL FIELD The disclosure involves a protector for syringe, and a safety syringe including such a protector. BACKGROUND The disposable syringe is a most frequently used instrument in medical field, to prevent the syringe needle after use from injuring the user by accident, causing pharmaceutical contamination, or second use of the injector, after the injection is finished, the needle shall be recycled as a whole; with stricter management of the medical instrument, some authorities have required to add special protectors for the disposable syringe. After the injection is finished, the protector is activated to protect the needle to prevent needle injuring by accident, separation of the needle and injector, and improve use safety of the disposable injector. The research on the syringe needle protector and the corresponding safety injector was carried out in the European and American countries at the earliest time, and the corresponding patented technology was mostly proposed by European and American enterprises, such as anti-stabbing safety device for syringe with Chinese patent publication No. CN104411351A, passive bolted lock ring protection device for syringe with Chinese patent publication No. CN101437561A, and disposal safety syringe with Chinese patent publication No.:CN1189222A, which are restricted by the shaping material performance and protection requirements, most of them have complicated structure and inconvenient operation, and the manufacturing costs are high. In recent years, with domestic enterprises' emphasis on this field, related technologies emerge, such as sliding sleeve needle protector and safety syringe with Chinese patent publication No. CN203043181U, a needle protector and safety syringe with Chinese patent publication No. CN111529825A, and a syringe needle protector with Chinese patent publication No. CN105854131A; such a kind of product play a protection role for the needle, but the structure is still complicated. To further improve operation convenience and safety of the syringe needle protector, relevant structures shall be further improved. DESCRIPTION OF THE DISCLOSURE The disclosure aims to provide a safety syringe to improve operation convenience and safety. For the purpose of the above, one aspect of the disclosure offers a syringe protector, which is characterized in that, an outer protection sleeve, an inner installation sleeve, and a spring are included; the said spring is installed at an outer wall sleeve of the said inner installation sleeve, the said spring is compressed and loaded into the outer protection sleeve, and a syringe needle protector is formed;the said outer protection sleeve is comprised of an outer sleeve orifice, an outer sleeve tube body, a guide chute, an inner stop spigot, a spring installation seat, and an inner locking jack catch;the said outer sleeve pipe orifice is installed at the bottom of the said outer sleeve tube body;the said guide chute is installed on a wall surface of the said outer sleeve tube body;the inner spigot is installed at the middle of the inner wall of the said outer sleeve tube body;the spring installation seat is installed at the upper portion of the said outer sleeve tube body, the bottom diameter of the said spring installation seat is larger than the inner diameter of the said outer sleeve tube body, and the said spring is stored in the said spring installation seat;an inner jack catch is installed above the said spring installation seat, and the number of the said inner locking jack catch shall be 2 and above around the circumference of the said spring installation seat;the said inner installation sleeve is comprised of an inner sleeve body, and a backstop claw, a guide block, an outer locking block, a clamping claw frame, releasing incline, injection cam fixing claw, and injector cam fixing slot;the said inner sleeve tube body is installed at the said outer sleeve tube body, and the said inner tube body is used to store the syringe.the said backstop jaw is installed at the bottom of the said inner sleeve tube body, and inclines outwards; under natural status before assembling, the concentric circle diameter where the bottom of the backstop jaw is larger than the inner diameter of the said outer sleeve tube body;the said inner sleeve tube body is installed with a guide block, which is located at the lower portion of the said inner sleeve tube body and protrudes at the outer wall surface of the said inner sleeve tube body; and the said guide block is clipped into the said guide chute;the