CN211409099U

CN211409099U - Safe and simple disposable retraction type venous blood taking needle

Info

Publication number: CN211409099U
Application number: CN201921723028.2U
Authority: CN
Inventors: 崔芳芳; 曹稳稳; 李成伟; 崔浩; 李海永
Original assignee: Affiliated Hospital of Xuzhou Medical University
Current assignee: Affiliated Hospital of Xuzhou Medical University
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-09-04
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to the technical field of blood sampling devices, in particular to a safe and simple disposable retraction type venous blood sampling needle, which comprises a needle handle, wherein the bottom end of the needle handle is provided with a blood sampling tube, the top end of the needle handle is provided with a needle cap, the top of the needle cap is provided with a needle head, and the outer wall of the needle handle is provided with a button; the bottom of the button penetrates through the outer wall of the needle handle and is tightly bonded with a limiting ring, the bottom of the limiting ring is tightly welded with a vertical spring, the outer wall of one end of the needle cap is tightly bonded with a first movable plate, and the first movable plate is of an L-shaped structure. The utility model discloses a design only needs one hand to press the cotton ball, and the other hand presses the button and can reach the purpose of returning the syringe needle to the needle cap in, and the operation is more simple and direct, convenient, safety, and the back of just taking a blood sample, need not to wait the syringe needle to extract completely and can press the button that returns, and the syringe needle no longer increases the pollution because of exposing, the injured risk, in addition, length shortens, and it is more convenient to use when arbitrary vascular operation, more accords with clinical operation mode.

Description

Safe and simple disposable retraction type venous blood taking needle

Technical Field

The utility model relates to a blood sampling device technical field, specifically speaking relates to a safe simple and direct disposable retraction formula vein blood taking needle.

Background

The existing blood taking needle is generally pulled out by hands, when the needle head is retracted manually, a cotton ball needs to be pressed by one hand, the needle cap needs to be pressed simultaneously, the other hand retreats and is pulled out, the force is not well mastered, the hand is not well coordinated and is still easy to prick, and the needle head can be returned to the needle cap after being completely pulled out, the needle head is still easy to take a lot of blood during the pulling-out process at the moment, the blood is easily splashed on the skin of a patient, infection or injury is caused, in addition, the length of the needle head is too long after the needle head is pulled out, and the use is very.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a safe simple and direct disposable retraction formula blood sampling needle to solve the problem that provides in the above-mentioned background art.

In order to realize the purpose, the utility model provides a safe, simple and convenient disposable retraction type venous blood taking needle, which comprises a needle handle, wherein the bottom end of the needle handle is provided with a blood taking tube, the top end of the needle handle is provided with a needle cap, the top of the needle cap is provided with a needle head, and the outer wall of the needle handle is provided with a button; the bottom end of the button penetrates through the outer wall of the needle handle and is tightly bonded with a limiting ring, a vertical spring is tightly welded at the bottom of the limiting ring, a first movable plate is tightly bonded at the outer wall of one end of the needle cap, the first movable plate is of an L-shaped structure, a first transverse spring is tightly welded on the inner side wall of the first movable plate, a first fixed plate is tightly bonded at one end, close to the first transverse spring, of the needle handle, the first transverse spring is located between the first fixed plate and the first movable plate, a second fixed plate is tightly bonded at the inner wall of the needle cap, one end of the needle head is inserted into the needle cap and penetrates through the second fixed plate, a second movable plate is tightly bonded at the outer wall of the needle cap, and a second transverse spring is arranged between the second fixed plate; the bottom inner wall of spacing ring closely bonds and has had spacing post, the outer wall that the needle cap is close to spacing post has seted up the card hole, the outer wall that the one end of syringe needle is close to spacing post has seted up the draw-in groove.

Preferably, a pressing plate is tightly bonded to the outer wall of one side of the top of the needle handle, a plurality of anti-skidding protrusions are tightly bonded to the surface of the pressing plate, and a blocking piece is tightly bonded to one side wall, close to the needle cap, of the pressing plate.

Preferably, a pressing plate is closely adhered to the top of the button.

Preferably, the outer wall of the button is provided with a semicircular snap ring.

Preferably, the diameter of the inner wall of the limiting ring is larger than that of the outer wall of the needle cap, and the limiting ring moves downwards to drive the limiting column to move out of the clamping hole and the clamping groove downwards.

Preferably, one end of the blood collection tube penetrates through the outer wall of the needle handle and is connected with one end of the needle head.

Preferably, the top ends of the limiting columns are sequentially inserted into the clamping holes and the clamping grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

in the safe, simple and convenient disposable retraction type venous blood taking needle, the purpose of retracting the needle head into the needle cap can be achieved by only pressing the cotton ball with one hand and pressing the button with the other hand, the operation is simpler, more convenient and safer, and after blood taking, the retraction button can be pressed without completely pulling out the needle head, the needle head is not exposed, so that the pollution and the injury risk are not increased, in addition, the length is shortened, the use is more convenient during the operation of any blood vessel, and the needle is more in line with the clinical operation mode.

Drawings

Fig. 1 is one of the schematic use diagrams of the present invention;

fig. 2 is a second schematic view of the present invention;

fig. 3 is one of the schematic internal structural diagrams of the present invention;

fig. 4 is a second schematic view of the internal structure of the present invention;

fig. 5 is a schematic view of a part of the structure of the present invention.

In the figure: 1. a needle handle; 11. a button; 111. pressing a plate; 112. a snap ring; 12. a vertical spring; 13. a first fixing plate; 2. a blood collection tube; 3. a needle cap; 31. a second fixing plate; 32. a first movable plate; 321. a first lateral spring; 33. a clamping hole; 4. a needle head; 41. a second movable plate; 42. a second lateral spring; 43. a card slot; 5. pressing a plate; 51. anti-skid projections; 52. a baffle plate; 6. a limiting ring; 61. a limiting column.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a safe simple and direct disposable retraction formula venous blood taking needle, as shown in fig. 1-5, including needle handle 1, grip with the hand prelude, the bottom of needle handle 1 is provided with heparin tube 2 for gather blood, transmit to the in vitro, the top of needle handle 1 is provided with needle cap 3 for accomodate the withdrawal of syringe needle 4, the top of needle cap 3 is provided with syringe needle 4, is used for taking a blood sample, and the outer wall of needle handle 1 is provided with button 11, retracts syringe needle 4 into needle cap 3 through pressing button 11.

The bottom end of the button 11 penetrates through the outer wall of the needle handle 1 and is tightly adhered with a limiting ring 6 for limiting the needle head 4 and the needle cap 3, the bottom of the limiting ring 6 is tightly welded with a vertical spring 12 for supporting and fixing the limiting ring 6, the outer wall of one end of the needle cap 3 is tightly adhered with a first movable plate 32, the first movable plate 32 is of an L-shaped structure, the inner side wall of the first movable plate 32 is tightly welded with a first transverse spring 321, one end of the needle handle 1 close to the first transverse spring 321 is tightly adhered with a first fixed plate 13, the first transverse spring 321 is positioned between the first fixed plate 13 and the first movable plate 32, the first movable plate 32 can be driven to move by the first transverse spring 321, the inner wall of the needle cap 3 is tightly adhered with a second fixed plate 31, one end of the needle head 4 is inserted into the needle cap 3 and penetrates through the second fixed plate 31, the outer wall of the needle cap 3 is tightly adhered with a second movable plate 41, a second transverse, the second movable plate 41 is moved by the second lateral spring 42.

The bottom inner wall of spacing ring 6 closely bonds and has had spacing post 61, and card hole 33 has been seted up to the outer wall that needle cap 3 is close to spacing post 61, and draw-in groove 43 has been seted up to the outer wall that the one end of syringe needle 4 is close to spacing post 61, carries on spacingly to needle cap 3 and syringe needle 4 through spacing post 61.

Specifically, the outer wall of top one side of needle handle 1 closely bonds and has clamp plate 5, and the surface of clamp plate 5 closely bonds and has a plurality of non-slip raised 51, and clamp plate 5 is close to a lateral wall of needle cap 3 and closely bonds and has separation blade 52, presses down clamp plate 5 through the hand for needle cap 3 presses on one's body the patient, guarantees that the fixed of syringe needle 4 is difficult not hard up.

In addition, a pressing plate 111 is closely adhered to the top of the button 11, so that the button 11 can be moved downward by hand pressing.

Furthermore, the outer wall of the button 11 is provided with a semicircular clamping ring 112, when the button is not used, the pressing plate 111 is clamped by the clamping ring 112, and the button 11 is prevented from moving downwards due to mistaken pressing.

Further, the diameter of the inner wall of the limit ring 6 is larger than that of the outer wall of the needle cap 3, and the limit ring 6 moves downwards to drive the limit column 61 to move out of the clamping hole 33 and the clamping groove 43 downwards, so that the needle cap 3 and the needle head 4 are guaranteed to move.

Furthermore, the one end of heparin tube 2 runs through the outer wall of needle handle 1 and is connected with the one end of syringe needle 4, guarantees the transmission of blood.

Furthermore, the top end of the limiting column 61 is inserted into the clamping hole 33 and the clamping groove 43 in sequence, so that the needle head 4 and the needle cap 3 are fixed.

When the safe, simple and convenient disposable retraction type venous blood collection needle of the embodiment is used, firstly, the needle head 4 is inserted into a blood vessel of a patient for blood drawing, the pressing plate 5 is pressed by the hand to fix the needle cap 3 and the needle head 4 without sliding, blood is collected through the needle head 4, after the blood collection is finished, a cotton ball is pressed by one hand, the pressing plate 111 is pressed by the other hand to move the button 11 to drive the spacing ring 6 to move, so that the spacing column 61 is separated from the clamping groove 43 and the clamping hole 33, the first movable plate 32 is pushed to move under the elastic force of the first transverse spring 321 to drive the needle cap 3 to move to the inside of the needle handle 1, the second movable plate 41 is pushed to move under the elastic force of the second transverse spring 42 to drive the needle head 4 to move to the needle cap 3, so that the needle head 4 and the needle cap 3 are stored into the inside of the needle handle 1, the needle head 4 can be pulled out, and the pollution increase, the risk of injury makes this blood taking needle length shorten simultaneously, and the clinical operation of being convenient for is used.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a safe simple and direct disposable retraction formula vein blood taking needle, includes needle handle (1), its characterized in that: a blood collection tube (2) is arranged at the bottom end of the needle handle (1), a needle cap (3) is arranged at the top end of the needle handle (1), a needle head (4) is arranged at the top of the needle cap (3), and a button (11) is arranged on the outer wall of the needle handle (1); the bottom of the button (11) runs through the outer wall of the needle handle (1) and is tightly bonded with a limiting ring (6), the bottom of the limiting ring (6) is tightly welded with a vertical spring (12), the outer wall of one end of the needle cap (3) is tightly bonded with a first movable plate (32), the first movable plate (32) is of an L-shaped structure, the inner side wall of the first movable plate (32) is tightly welded with a first transverse spring (321), one end, close to the first transverse spring (321), of the needle handle (1) is tightly bonded with a first fixed plate (13), the first transverse spring (321) is positioned between the first fixed plate (13) and the first movable plate (32), the inner wall of the needle cap (3) is tightly bonded with a second fixed plate (31), one end of the needle head (4) is inserted into the needle cap (3) and runs through the second fixed plate (31) and the outer wall is tightly bonded with a second movable plate (41), a second transverse spring (42) is arranged between the second fixed plate (31) and the second movable plate (41); the bottom inner wall of spacing ring (6) closely bonds and has spacing post (61), the outer wall that needle cap (3) are close to spacing post (61) has seted up card hole (33), draw-in groove (43) have been seted up to the outer wall that the one end of syringe needle (4) is close to spacing post (61).

2. A safe, simple and quick disposable retraction type intravenous blood collection needle according to claim 1, characterized in that: the outer wall of one side of the top of the needle handle (1) is tightly bonded with a pressing plate (5), the surface of the pressing plate (5) is tightly bonded with a plurality of anti-skidding bulges (51), and one side wall of the pressing plate (5) close to the needle cap (3) is tightly bonded with a blocking piece (52).

3. A safe, simple and quick disposable retraction type intravenous blood collection needle according to claim 1, characterized in that: the top of the button (11) is closely adhered with a press plate (111).

4. A safe, simple and quick disposable retraction type intravenous blood collection needle according to claim 1, characterized in that: the outer wall of the button (11) is provided with a semicircular snap ring (112).

5. A safe, simple and quick disposable retraction type intravenous blood collection needle according to claim 1, characterized in that: the inner wall diameter of the limiting ring (6) is larger than the outer wall diameter of the needle cap (3), and the limiting ring (6) moves downwards to drive the limiting column (61) to move out of the clamping hole (33) and the clamping groove (43) downwards.

6. A safe, simple and quick disposable retraction type intravenous blood collection needle according to claim 1, characterized in that: one end of the blood collection tube (2) penetrates through the outer wall of the needle handle (1) and is connected with one end of the needle head (4).

7. A safe, simple and quick disposable retraction type intravenous blood collection needle according to claim 1, characterized in that: the top end of the limiting column (61) is inserted into the clamping hole (33) and the clamping groove (43) in sequence.