CN220158249U - Blood taking needle - Google Patents

Abstract

The utility model relates to a blood taking needle, which comprises a protective sleeve, a needle head and a liquid supply pipe, wherein the protective sleeve is sleeved on the needle head in a telescopic manner; the protective sleeve comprises a sleeve body and a spring, the sleeve body and the spring are sleeved on the needle, one end of the spring is connected with the sleeve body, and the other end of the spring is connected with the needle; under the natural state of the spring, the end face of the sleeve body is flush with the suspended end face of the needle head. The protective sleeve is slidably arranged on the needle, so that injection operation can be performed without pulling out the protective sleeve, the protective sleeve can be wrapped by sliding the protective sleeve after blood collection, the protective sleeve is not required to be sleeved on the needle, and needle puncture is not easy to occur.

Description

Blood taking needle

Technical Field

The utility model relates to the field of medical instruments, in particular to a blood taking needle.

Background

In clinical treatment and clinic examination, a large amount of venous blood specimens need to be collected for various examinations every day, and disposable safety blood taking needles are important devices for collecting blood samples in the medical examination process.

The prior patent CN207506579U discloses a safe blood taking needle, which comprises a needle cylinder, a blood sucking tube, a connector, a connecting tube and a needle head, wherein the inner wall of the needle cylinder is provided with internal threads, the blood sucking tube is connected with the needle cylinder through threads, the needle head is provided with a needle cap, and the outer wall of the needle head is in threaded spiral connection with the inner wall of the needle cap. The needle cap of the safe blood sampling needle head is in threaded connection with the needle head, before blood sampling, the protective sleeve is taken off, after blood sampling, the needle head is exposed, a nursing staff is required to sleeve the protective sleeve on the needle head, and needle stabbing is easy to occur.

Therefore, the blood taking needle is designed, the injection operation can be performed without pulling out the needle cap, and the needle puncture is not easy to happen.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a blood taking needle which can be used for injection operation without pulling out a needle cap and is not easy to cause needle puncture.

In order to solve the technical problems, the utility model provides a blood taking needle which comprises a protective sleeve, a needle head and a liquid supply pipe, wherein the protective sleeve is sleeved on the needle head in a telescopic manner, and the liquid supply pipe is communicated with the needle head; the protective sleeve comprises a sleeve body and a spring, the sleeve body and the spring are sleeved on the needle, one end of the spring is connected with the sleeve body, and the other end of the spring is connected with the needle; under the natural state of the spring, the end face of the sleeve body is flush with the suspended end face of the needle head.

In at least one embodiment, the blood taking needle further comprises a wing plate, the sleeve body is provided with a sliding groove along the length direction of the needle head, one side of the wing plate penetrates through the sliding groove and is connected with the needle head, the other side of the wing plate is arranged outside the protective sleeve and is connected with a lug, and the lug is blocked outside the sliding groove.

The utility model at least realizes the following beneficial effects:

1. the protective sleeve is slidably arranged on the needle, so that injection operation can be performed without pulling out the protective sleeve, the protective sleeve can be wrapped by sliding the protective sleeve after blood collection, the protective sleeve is not required to be sleeved on the needle, and needle puncture is not easy to occur.

2. The protective sleeve sets up the spring, when the withdrawal is acted on the power on the protective sleeve, the cover body just can wrap up the protective sleeve under the elastic action of spring voluntarily, convenient operation.

Drawings

One or more embodiments of the present utility model will now be described, by way of example only, with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of one embodiment of the present utility model;

fig. 2 is a cross-sectional view of the embodiment of fig. 1.

The reference numerals in the figures are: 1. a protective sleeve; 2. a needle; 3. a liquid supply pipe; 4. a wing plate; 5. a baffle ring; 11. a sleeve body; 12. a spring; 13. a sliding groove; 14. a bump; 15. a mounting ring; 21. a needle tip; 22. a needle handle; 51. a notch; 52. and rotating the block.

Detailed Description

The utility model will be described in detail hereinafter with reference to exemplary embodiments in the accompanying drawings. It should be understood, however, that this utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the utility model to those skilled in the art.

In the description of the present utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

Aims at the defect that the safety blood taking needle in the prior art is extremely easy to cause needle puncture. The inventors have found after careful analysis that the above technical problems occur mainly because: the needle cap of the safe blood sampling needle head is in threaded connection with the needle head, before blood sampling, the protective sleeve is taken off, after blood sampling, the needle head is exposed, a nursing staff is required to sleeve the protective sleeve on the needle head, and needle stabbing is easy to occur. Based on the above analysis, the inventors devised a lancet that can perform injection operation without pulling out a cap, and that is less prone to needle stick injuries.

1-2, in one embodiment of the present utility model, a blood taking needle includes a protecting sleeve 1, a needle head 2 and a liquid supply tube 3, wherein the protecting sleeve 1 is telescopically sleeved on the needle head 2, and the liquid supply tube 3 is communicated with the needle head 2; the protective sleeve 1 comprises a sleeve body 11 and a spring 12, wherein the sleeve body 11 and the spring 12 are sleeved on the needle head 2, one end of the spring 12 is connected with the sleeve body 11, and the other end is connected with the needle head 2; in the natural state of the spring 12, the end face of the sleeve body 11 is flush with the suspended end face of the needle head 2.

The blood taking needle also comprises a wing plate 4, the sleeve body 11 is provided with a sliding groove 13 along the length direction of the needle head 2, one side of the wing plate 4 passes through the sliding groove 13 and is connected with the needle head 2, the other side of the wing plate is arranged outside the protective sleeve 1 and is connected with a lug 14, and the lug 14 is blocked outside the sliding groove 13. The spring 12 is mounted in the housing 11. The needle head 2 is formed by fixedly communicating a needle point 21 and a needle handle 22, and a wing plate 4 is arranged on the needle handle 22; the inner wall of the sleeve body 11 is provided with a mounting ring 15 in a protruding mode, a spring 12 is arranged between the wing plate 4 and the mounting ring 15, one end of the spring 12 is fixedly connected with the wing plate 4, and the other end of the spring 12 is fixedly connected with the mounting ring 15. The inner diameter of the mounting ring 15 is smaller than the outer diameter of the spring 12. The wing plate 4 slides in the sliding groove 13, so that when the needle tip 21 pierces a blood vessel, the wing plate is not easy to rotate, and the bulge of a piercing hole is not easy to occur. The blood taking needle is provided with the convex blocks 14, so that the wing plate 4 is prevented from retracting into the sleeve body 11, and the telescoping operation of the needle head 2 is easy to carry out; and the medical staff can conveniently grasp the wing plate 4 to perform blood sampling operation. The spring 12 is arranged in the sleeve 11, and the spring 12 is arranged between the wing plate 4 and the mounting ring 15, so that the spring 12 is protected, flexible extension and retraction of the spring 12 are facilitated, and the sleeve 11 is not easy to extend.

Wherein, the sleeve body 11 is provided with a baffle ring 5, the baffle ring 5 is rotatably sleeved on the sleeve body 11, and a notch 51 is arranged on the baffle ring 5 from one end to the other end; after the baffle ring 5 rotates, the notch 51 is communicated with the sliding groove 13, and the wing plate 4 can pass through the notch 51 and the sliding groove 13 at the same time. The outer surface of the sleeve body 11 is provided with external threads, and the inner wall of the baffle ring 5 is provided with internal threads matched with the external threads. The outer surface of the baffle ring 5 is protruded with a rotating block 52, which is beneficial to the rotation of the baffle ring 5. The baffle ring 5 is in threaded connection with the sleeve body 11, the length of the needle point 21 extending out of the sleeve body 11 can be adjusted, the spring 12 is in a stretched state when blood is collected, the wing plate 4 is propped against the upper side of the baffle ring 5 under the elastic action of the spring 12, the baffle ring 5 is not easy to rotate on the sleeve body 11 by combining the thread structure and the elastic action of the spring 12, the spring 12 is in a compressed state after the blood collection is finished, the wing plate 4 is propped against the lower side of the baffle ring 5 under the elastic action of the spring 12, and the elastic action of the thread structure and the spring 12 are combined; and the retainer 5 is not easily stretched over the housing 11.

The using method of the blood taking needle comprises the following steps:

in the blood collection operation, first, the stopper ring 5 is rotated clockwise to communicate the notch 51 with the slide groove 13. Next, by pulling the protective sheath 1, the wing 4 can pass through the notch 51 and the sliding groove 13 simultaneously, exposing the needle tip 21. Again, the baffle ring 5 is rotated counterclockwise, so that the notch 51 is not communicated with the sliding groove 13, and the wing plate 4 is propped against the upper side of the baffle ring 5 under the elastic action of the spring 12. Finally, the needle tip 21 pierces the blood vessel. In the blood sampling process, the wing plate 4 is propped against the baffle ring 5 under the elastic action of the spring 12, the protective sleeve 1 is not easy to slide to the top end of the needle point 21, and the insertion of the needle point 21 into a blood vessel is not easy to be influenced.

After completion of blood collection, first, the stopper ring 5 is rotated clockwise to communicate the notch 51 with the slide groove 13. Next, the needle tip 21 is wrapped by releasing the protective sheath 1 and allowing the wing 4 to pass through both the notch 51 and the sliding groove 13. Again, the baffle ring 5 is rotated counterclockwise, so that the notch 51 is not communicated with the sliding groove 13, and the wing plate 4 is propped under the baffle ring 5 under the elastic action of the spring 12. Even if the protective cover 1 is pulled, the needle tip 21 is not exposed to the environment, and the needle tip 21 is not easy to stab the skin. Finally, the blood collection needle is thrown into the waste box.

It should be understood that all of the above embodiments are exemplary and not limiting, and that various modifications or variations to the specific embodiments described above will be within the scope of the utility model as contemplated by those skilled in the art.

Claims (8)

1. Blood taking needle, its characterized in that: comprises a protective sleeve (1), a needle head (2) and a liquid supply pipe (3), wherein the protective sleeve (1) is sleeved on the needle head (2) in a telescopic way, and the liquid supply pipe (3) is communicated with the needle head (2); the protective sleeve (1) comprises a sleeve body (11) and a spring (12), the sleeve body (11) and the spring (12) are sleeved on the needle head (2), one end of the spring (12) is connected with the sleeve body (11), and the other end is connected with the needle head (2); under the natural state of the spring (12), the end face of the sleeve body (11) is flush with the suspended end face of the needle head (2).

2. The lancet according to claim 1, wherein: still include pterygoid lamina (4), sleeve body (11) are equipped with sliding tray (13) along syringe needle (2) length direction, and pterygoid lamina (4) one side passes sliding tray (13) and is connected with syringe needle (2), and the opposite side sets up outside protective sheath (1) and is connected with lug (14), and lug (14) block outside sliding tray (13).

3. The lancet according to claim 2, wherein: the sleeve body (11) is provided with a baffle ring (5), the baffle ring (5) is rotatably sleeved on the sleeve body (11), and a notch (51) is formed in the baffle ring (5) from one end to the other end; after the baffle ring (5) rotates, the notch (51) is communicated with the sliding groove (13), and the wing plate (4) can simultaneously pass through the notch (51) and the sliding groove (13).

4. A lancet according to claim 3, wherein: the external surface of the sleeve body (11) is provided with external threads, and the inner wall of the baffle ring (5) is provided with internal threads matched with the external threads.

5. The lancet of claim 4, wherein: the outer surface of the baffle ring (5) is protruded with a rotating block (52).

6. The lancet according to claim 2 or 5, wherein: the spring (12) is arranged in the sleeve body (11).

7. The lancet of claim 6, wherein: the needle head (2) is formed by fixedly communicating a needle point (21) and a needle handle (22), and the wing plate (4) is arranged on the needle handle (22); the inner wall of the sleeve body (11) is provided with a mounting ring (15) in a protruding mode, a spring (12) is arranged between the wing plate (4) and the mounting ring (15), one end of the spring (12) is fixedly connected with the wing plate (4), and the other end of the spring is fixedly connected with the mounting ring (15).

8. The lancet of claim 7, wherein: the inner diameter of the mounting ring (15) is smaller than the outer diameter of the spring (12).