CN220344878U

CN220344878U - Safety syringe assembly and safety syringe

Info

Publication number: CN220344878U
Application number: CN202222565212.7U
Authority: CN
Inventors: 王甲源
Original assignee: Hunan North Medical Technology Co ltd
Current assignee: Hunan North Medical Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2024-01-16
Anticipated expiration: 2032-09-27

Abstract

The utility model relates to the technical field of medical instruments and discloses a safety syringe assembly. The safety syringe assembly of the present utility model includes: needle tubing, needle file, sleeve pipe and elastic component. The hub member includes a theme and a dome. The sleeve is slidable from a first position to a second position. When the sleeve is positioned at the first position, one end of the elastic piece can be clamped in the through hole. When the sleeve is in the second position, the inner hole of the sleeve can accommodate the area where the needle body is located after the needle body is assembled by the main body. The utility model protects the used needle body through the sleeve. The sleeve tube can be ejected out with high reliability, and the elastic piece is simple and convenient to operate and is used once. The utility model also provides a safety syringe.

Description

Safety syringe assembly and safety syringe

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a safety syringe assembly.

Background

After injection, the needle of the injector which is penetrated into the human body is usually in an exposed state, and the exposed needle is mostly directly abandoned, but after being abandoned, the injector is easy to stab an operator or cause secondary pollution if being improperly operated. To solve the above problems, in the prior art, a needle cap is generally used to cover the needle, but the operation is easy to have a risk of stabbing operators and the operation time is long.

Disclosure of Invention

The present utility model aims to provide a safety syringe assembly that solves the problems set forth in the background art above.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a safety syringe assembly, comprising: needle tubing, needle file, sleeve pipe and elastic component.

Wherein, the needle tube is provided with a connecting and inserting end; the inserting end forms a liquid inlet hole; a hub member, comprising: the main body comprises a needle seat extending direction; one end of the main body is inserted into the insertion end, and the extending direction of the needle seat is positioned in the extending direction of the needle tube; the second end of the main body can be provided with a needle body, and the inner cavity of the needle body can be communicated with the liquid inlet; and a spring piece provided in the outer circumferential direction of the first end of the main body; the elastic sheet can continuously apply elastic force to a set position outside the main body; the inner hole of the sleeve is slidably arranged on the outer surface of the main body; the wall of the sleeve forms a through hole; one end of the sleeve, which is far away from the main body, is provided with a through hole which can enable the needle body to pass through.

The sleeve is slidable from a first position a to a second position a; when the sleeve is positioned at the first position A, one end of the elastic piece can be clamped in the through hole; when the sleeve is positioned at the second position A, the inner hole of the sleeve can accommodate the area where the needle body is positioned after the needle body is assembled by the main body.

The elastic piece is arranged at the second end of the main body and the inner hole of the sleeve, can be far away from the bottom surface of the main body, and can continuously apply elastic force to the sleeve to enable the sleeve to be located at the second position A.

Preferably, the method further comprises: an indicating plate connected or integrally formed at the tail end of the elastic sheet; when the finger pressure plate presses towards the main body, one end of the elastic sheet can be driven to be separated from the through hole.

Preferably, a positioning ring groove is formed on the inner hole wall of the sleeve facing one end of the needle tube; an accommodating ring groove is formed on the inner hole wall of one end of the sleeve, which is far away from the needle tube; an inclined transition surface is arranged between the containing ring groove and the inner hole wall.

The second end of the body includes a positioning pawl extending circumferentially outward of the body; when the sleeve is in the first position a; the positioning pawl can be accommodated in the accommodating ring groove.

When the sleeve is positioned at the second position A, the positioning claw is clamped in the positioning ring groove.

Preferably, the positioning claws are two positioning claws; the two positioning claws are symmetrically arranged along the same radial direction of the periphery of the main body.

Preferably, the orifice of the liquid inlet hole comprises a conical orifice.

The first end of the body forms an internal bore along the extension direction of the body.

The safety syringe assembly further includes: forming a needle fixing hole capable of fixing the needle body at the second end of the main body; the solid needle hole is communicated with the inner hole.

The inner plug piece is detachably arranged in the inner hole, one end of the inner plug piece, facing the needle tube, is provided with a conical end corresponding to the taper of the conical orifice, and the conical end can be abutted against the conical orifice.

The inner plug piece forms a liquid through hole along the extending direction; the liquid through hole is communicated with the solid needle hole.

Preferably, the outer circumference of the spigot end is provided with an annular bulge; the first end of the main body is provided with an inner hole connected with the plug-in end; an annular sealing groove corresponding to the annular bulge is formed on the wall of the inner hole; the annular bulge can be clamped in the annular sealing groove.

Preferably, the elastic sheet can be clamped at the end part of the through hole, the through hole is a square hole corresponding to the square protruding part, and therefore the square protruding can be clamped in the square hole.

A safety syringe, comprising: a safety syringe assembly according to any one of the preceding claims; a needle body provided to the main body; the needle head sheath is detachably sleeved outside the sleeve and can accommodate the area where the needle body is located; and the piston rod can be inserted into the inner hole of the needle tube from one end of the needle tube away from the inserting end and can slide in the inner hole.

Preferably, the finger pressure plate is connected with the tail end of the elastic sheet; when the finger pressure plate is pressed towards the main body, one end of the elastic sheet can be driven to be separated from the through hole; the acupressure probe includes an upper face perpendicular to the extending direction of the main body.

Preferably, the outer circumference of the needle shield comprises an aperture; the opening has an upper edge perpendicular to the direction of extension of the body; the upper edge can be clamped on the upper surface of the finger pressure plate, so that the needle head sheath and the main body can be conveniently clamped and connected, and the needle head sheath and the main body are corresponding to the needle body in position.

The utility model provides a safety syringe assembly, which has the following beneficial effects:

firstly, the needle sheath is detachably sleeved outside the sleeve and can accommodate the area where the needle body is positioned; and the piston rod can be inserted into the inner hole of the needle tube from one end of the needle tube away from the inserting end and can slide in the inner hole.

Secondly, the utility model is connected with the tail end of the elastic sheet through the finger pressure plate; when the finger pressure plate presses towards the main body, one end of the elastic sheet can be driven to be separated from the through hole.

Drawings

FIG. 1 is a schematic perspective view of the surface of the overall structure of the front face of the present utility model;

FIG. 2 is a schematic view of the interior of the needle cannula and cannula connection of the front face of the present utility model;

fig. 3 is a schematic perspective view of the structural surface of the front face of the needle hub of the present utility model;

FIG. 4 is a schematic view of the overall structure of the front sleeve of the present utility model;

fig. 5 is a schematic view of the interior of the front hub and cannula connection of the present utility model;

FIG. 6 is a schematic view of the interior of the front sleeve structure of the present utility model;

FIG. 7 is a schematic view of the inside of the annular boss and annular seal groove connection on the front face of the present utility model;

fig. 8 is a schematic view of the interior of the front face hub structure of the present utility model;

FIG. 9 is a schematic view of the interior of the cannula and needle shield connection of the front face of the present utility model;

fig. 10 is a schematic perspective view of the surface of the needle cannula, needle shield and plunger rod attachment structure of the front face of the present utility model.

In the figure: 10. a needle tube; 11. a plug end; 12. a liquid inlet; 13. a tapered orifice; 14. an annular protrusion; 20. a needle holder member; 21. a main body; 22. a spring plate; 23. a positioning claw; 24. an inner hole; 25. a pin hole is fixed; 26. an annular seal groove; 27. square protruding part; 30. a sleeve; 31. a through hole; 32. a through hole; 33. positioning ring grooves; 34. a receiving ring groove; 35. square holes; 40. an elastic member; 50. an acupressure probe; 51. an upper face; 60. an inner plug; 61. a liquid through hole; 70. a needle shield; 71. an upper edge; 80. a piston rod; 90. a needle body.

Detailed Description

As shown in fig. 1-10, the present utility model provides a technical solution:

a safety syringe assembly in one embodiment of the utility model includes a syringe 10 having a hub 11. The spigot 11 forms a liquid inlet hole 12, and the liquid inlet hole 12 is a hole for the liquid medicine to flow out.

A hub member 20 comprising: the main body 21, the main body 21 includes a needle seat extending direction. The first end of the main body 21 is inserted into the insertion end 11 and the extending direction of the needle holder is located in the extending direction of the needle tube 10. The second end of the main body 21 can be provided with a needle body 90 and the inner cavity of the needle body 90 can be communicated with the liquid inlet hole 12.

And a spring piece 22 provided in the outer circumferential direction of the first end of the main body 21. The elastic piece 22 can continuously apply elastic force to the set position outside the main body 21. The sleeve 30, the hole of sleeve 30 slidable sets up in the outside face of main part 21. The wall of the sleeve 30 forms a through hole 31. The cannula 30 can define a through hole 32 at an end remote from the body 21 through which the needle 90 can be passed.

The sleeve 30 is slidable from a first position A1 to a second position A2. When the sleeve 30 is located at the first position A1, one end of the elastic piece 22 can be clamped in the through hole 31. When the sleeve 30 is in the second position A2, the internal bore of the sleeve 30 is able to accommodate the region of the body 21 where the needle 90 is located after assembly of the needle 90.

The elastic member 40 is disposed at the second end of the main body 21 and the inner hole of the sleeve 30, and can keep away from the bottom surface of the main body 21 and continuously apply an elastic force to the sleeve 30 to be located at the second position A2.

Thus, in use of the present utility model, the operator removes the needle shield 70 from the top of the needle cannula 10, pulls the plunger rod 80, inhales the medicament into the needle cannula 10, and outwardly flows from the inlet port 12 of the hub 11, thereby completing the injection.

After the injection is completed, the elastic piece 22 is pressed towards the main body 21 to drive one end of the elastic piece 22 to be separated from the through hole 31 of the sleeve 30, so that the sleeve 30 can slide from the first position A1 to the second position A2 under the action of the elastic piece 40, and when the sleeve 30 is positioned at the second position A2, the inner hole of the sleeve 30 can accommodate the main body 21 to assemble the needle body 90. Thereby realizing the protection of the needle 90 after injection, avoiding stabbing and secondary pollution, being capable of being operated by one hand and having convenient and simple operation. Because the elastic member is single-use, the reliability of its ejection of the sleeve 30 is high.

In another embodiment of the present utility model, the safety syringe assembly further comprises: and an acupressure probe 50 attached to or integrally formed with the end of the elastic sheet 22. When the finger board 50 is pressed toward the main body 21, one end of the elastic piece 22 can be driven to be separated from the through hole 31. Thereby facilitating manipulation of the spring 22 and the acupressure probe 50 is more suitable for thumb-pressing operations.

In another embodiment of the present utility model, as shown in fig. 5, a retaining ring groove 33 is formed in the wall of the interior bore of the cannula 30 facing the end of the cannula 10. The interior bore wall of the cannula 30 at the end remote from the needle cannula 10 defines a receiving annular groove 34. An angled transition surface is included between the receiving groove 34 and the inner bore wall. The second end of the body 21 includes a positioning claw 23 extending toward the outer circumference of the body 21. When the sleeve 30 is in the first position A1. The positioning pawl 23 can be accommodated in the accommodating ring groove 34.

When the sleeve 30 is at the second position A2, the positioning pawl 23 is clamped in the positioning ring groove 33.

Thus, when the sleeve 30 slides from the first position A1 to the second position A2, as shown in fig. 4, the sleeve 30 can be positioned at the second position A2 by the structure, so that the structure is more stable and has higher reliability.

In another embodiment of the present utility model, the positioning claws 23 are two positioning claws 23. The two positioning claws 23 are symmetrically arranged in the same radial direction along the outer periphery of the main body 21. Thereby making the positioning of the sleeve 30 more stable and less prone to falling off. The inclined transition surface further facilitates sliding of the positioning pawl 23 over the sleeve 30.

In another embodiment of the utility model, the orifice of the inlet opening 12 comprises a conical orifice 13. The first end of the main body 21 forms an inner hole 24 along the extending direction of the main body 21.

The safety syringe assembly further includes: a needle fixing hole 25 capable of fixing the needle body 90 is formed at the second end of the main body 21. The pin holes 25 communicate with the inner holes 24.

An inner plug 60 detachably provided to the inner bore 24 and having a tapered end corresponding to the taper of the tapered orifice 13 at an end facing the needle tube 10, the tapered end being capable of abutting against the tapered orifice 13.

The inner plug 60 is formed with a liquid passage hole 61 along its extending direction. The liquid through hole 61 is communicated with the pin hole 25.

Therefore, the fixed connection between the needle seat member 20 and the connecting and inserting end 11 is more reliable, the needle seat member 20 is prevented from being separated and misplaced from the connecting and inserting end 11, and the reliability of the whole fixing structure is ensured.

In another embodiment of the present utility model, the outer circumference of the spigot 11 is provided with an annular protrusion 14. The first end of the body 21 has an inner bore for receiving the spigot 11. An annular seal groove 26 corresponding to the annular protrusion 14 is formed on the wall of the inner bore. The annular projection 14 can be snapped into the annular seal groove 26. Therefore, the fixed connection between the needle seat member 20 and the connecting and inserting end 11 is more reliable, the needle seat member 20 is prevented from being separated and misplaced from the connecting and inserting end 11, and the reliability of the whole fixing structure is ensured.

As shown in fig. 3, in another embodiment of the present utility model, the elastic piece 22 can be clamped to the end of the through hole 31, and the through hole 31 is a square hole 35 corresponding to the square protrusion 27, so that the square protrusion can be clamped in the square hole 35. Thereby avoiding the spring plate 22 from separating from the square hole 35 when not triggered, increasing the contact area between the spring plate 22 and prevention and control, and ensuring the stability of the structure.

A safety syringe, comprising: the safety syringe assembly, needle 90, needle shield 70 and plunger rod 80 of the present utility model.

Wherein the needle body 90 is provided to the main body 21. The needle shield 70 is removably disposed about the exterior of the cannula 30 and is capable of receiving the region of the needle body 90. The plunger rod 80 is insertable into and slidable within the bore of the needle cannula 10 from an end of the needle cannula 10 remote from the hub 11.

A safety syringe assembly, further comprising: and an acupressure probe 50 connected to the end of the elastic piece 22. When the finger board 50 is pressed toward the main body 21, one end of the elastic piece 22 can be driven to be separated from the through hole 31. The acupressure probe 50 includes an upper face 51 perpendicular to the extending direction of the main body 21.

In one embodiment of the present utility model, the outer circumference of the needle shield 70 includes an aperture. The opening has an upper edge 71 perpendicular to the direction of extension of the body 21. The upper edge 71 can be engaged with the upper surface 51 of the acupressure probe 50.

After the injection is completed, the finger pressure plate 50 is pressed towards the direction of the main body 21, one end of the elastic sheet 22 is driven to be separated from the through hole 31 of the sleeve 30, the sleeve 30 can slide from the first position A1 to the second position A2 under the action of the elastic piece, and when the sleeve 30 is positioned at the second position A2, the inner hole of the sleeve 30 can accommodate the main body 21 to assemble the needle body 90. Thereby realizing the protection of the needle 90 after injection, avoiding stabbing and secondary pollution, being capable of being operated by one hand and having convenient and simple operation. Because the elastic member is single-use, the reliability of its ejection of the sleeve 30 is high.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. A safety syringe assembly, comprising:

a needle tube (10) having a hub (11); the spigot end (11) forms a liquid inlet hole (12);

a hub (20) comprising:

a main body (21), the main body (21) comprising a needle hub extension direction; the first end of the main body (21) is inserted into the insertion end (11) and the extending direction of the needle seat is positioned in the extending direction of the needle tube (10); the second end of the main body (21) can be provided with a needle body (90) and the inner cavity of the needle body (90) can be communicated with the liquid inlet hole (12); and

a spring piece (22) provided on the outer periphery of the first end of the main body (21); the elastic sheet (22) can continuously apply elastic force to a set position outside the main body (21);

the inner hole of the sleeve (30) is slidably arranged on the outer surface of the main body (21); the wall of the sleeve (30) is provided with a through hole (31); one end of the sleeve (30) far away from the main body (21) is provided with a through hole (32) which can enable the needle body (90) to pass through;

the sleeve (30) is slidable from a first position (A1) to a second position (A2); when the sleeve (30) is positioned at the first position (A1), one end of the elastic piece (22) can be clamped in the through hole (31); when the sleeve (30) is positioned at the second position (A2), the inner hole of the sleeve (30) can accommodate the area where the needle body (90) is positioned after the needle body (90) is assembled by the main body (21);

and an elastic member (40) which is provided at the second end of the main body (21) and the inner hole of the sleeve (30) so as to be away from the bottom surface of the main body (21) and continuously apply an elastic force to the sleeve (30) so as to be positioned at the second position (A2).

2. The safety syringe assembly of claim 1, further comprising:

an acupressure probe (50) that is connected to or integrally formed with the end of the elastic sheet (22); when the finger-pressing plate (50) is pressed towards the main body (21), one end of the elastic piece (22) can be driven to be separated from the through hole (31).

3. A safety syringe assembly according to claim 1, wherein the sleeve (30) defines a retaining groove (33) in the wall of the bore facing one end of the needle cannula (10); an accommodating ring groove (34) is formed on the inner hole wall of one end, far away from the needle tube (10), of the sleeve (30); an inclined transition surface is arranged between the containing ring groove (34) and the inner hole wall;

the second end of the main body (21) comprises a positioning claw (23) extending towards the outer circumference of the main body (21); when the sleeve (30) is in the first position (A1); the positioning claw (23) can be accommodated in the accommodating ring groove (34);

when the sleeve (30) is located at the second position (A2), the locating claw (23) is clamped in the locating ring groove (33).

4. Safety syringe assembly according to claim 1, characterized in that the positioning pawl (23) is two positioning pawls (23); the two positioning claws (23) are symmetrically arranged along the same radial direction of the periphery of the main body (21).

5. Safety syringe assembly according to claim 1, characterized in that the orifice of the inlet opening (12) comprises a conical orifice (13);

-the first end of the body (21) forms an internal bore (24) along the extension of the body (21);

the safety syringe assembly further includes: a needle fixing hole (25) capable of fixing the needle body (90) is formed at the second end of the main body (21); the fixing pin hole (25) is communicated with the inner hole (24);

an inner plug (60) detachably provided to the inner hole (24) and having a tapered end corresponding to the taper of the tapered orifice (13) at an end facing the needle tube (10), the tapered end being capable of abutting against the tapered orifice (13);

the inner plug (60) forms a liquid through hole (61) along the extending direction; the liquid through hole (61) is communicated with the fixing pin hole (25).

6. A safety syringe assembly according to claim 1, wherein the outer circumference of the spigot end (11) is provided with an annular projection (14);

the first end of the main body (21) is provided with an inner hole for plugging the plugging end (11); an annular sealing groove (26) corresponding to the annular bulge (14) is formed on the wall of the inner hole; the annular bulge (14) can be clamped in the annular sealing groove (26).

7. The safety syringe assembly according to claim 1, wherein the end of the spring plate (22) which can be clamped to the through hole (31) is provided with a square protruding portion (27), and the through hole (31) is a square hole (35) corresponding to the square protruding portion (27) so that the square protruding portion can be clamped in the square hole (35).

8. A safety syringe, comprising:

a safety syringe assembly according to any one of claims 1 or 3 to 7;

a needle body (90) provided to the main body (21);

a needle shield (70) detachably sleeved outside the sleeve (30) and capable of accommodating the region where the needle body (90) is located;

a piston rod (80) which is insertable into and slidable within the bore of the needle cannula (10) from an end of the needle cannula (10) remote from the spigot end (11).

9. The safety syringe of claim 8, further comprising:

an acupressure probe (50) connected to the end of the elastic sheet (22); when the finger-pressing plate (50) is pressed towards the main body (21), one end of the elastic sheet (22) can be driven to be separated from the through hole (31); the acupressure probe (50) includes an upper face (51) perpendicular to the extending direction of the main body (21).

10. The safety syringe of claim 9, wherein the outer circumference of the needle shield (70) includes an aperture; the opening has an upper edge (71) perpendicular to the direction of extension of the body (21); the upper edge (71) can be clamped to the upper surface (51) of the acupressure probe (50).