CN217886019U

CN217886019U - Spring type safety blood taking needle

Info

Publication number: CN217886019U
Application number: CN202221514048.0U
Authority: CN
Inventors: 陈栩; 陈洪; 郑元贤; 娄卓远; 池中士超
Original assignee: Zhejiang Kindly Medical Devices Co Ltd
Current assignee: Zhejiang Kindly Medical Devices Co Ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-11-25
Anticipated expiration: 2032-06-13

Abstract

The utility model provides a spring safety blood taking needle relates to blood taking needle technical field, spring safety blood taking needle includes first needle tubing, first needle file, safety cover and spring, the one end and the first needle union coupling of first needle file, safety cover is inserted to the other end of first needle file, safety cover is connected with the spring between the one end and the first needle file that are close to first needle tubing, be equipped with elasticity back-off and stop part on the first needle file, safety cover is equipped with the spacing hole with elasticity back-off looks adaptation in the one end that is close to first needle tubing, safety cover is equipped with spacing step and spacing shell fragment in the one end of keeping away from first needle tubing, spacing step and spacing shell fragment are suitable for respectively with the both ends face butt of stop part. The spring type safety blood taking needle of the utility model can utilize the restoring force of the spring to drive the first needle seat and the first needle tube to retract into the safety cover after the blood taking is finished, thereby avoiding the first needle tube from exposing and stabbing medical staff; and whether the first needle tube is used or not can be easily judged according to the position of the first needle tube relative to the safety cover.

Description

Spring type safety blood taking needle

Technical Field

The utility model relates to a blood taking needle technical field particularly, relates to a spring safety blood taking needle.

Background

The blood taking needle is used for blood collection, uses fairly extensively in clinical, and blood sampling is generally by sheath protection needle tubing before using, and when taking blood, medical personnel extracted the sheath, pierces the patient skin with the needle tubing, and the needle tubing exposes outside after the blood sampling is accomplished, very easily causes the injury to medical personnel, if the sheath before the cover returns, causes the secondary to use easily, appears the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a spring safety blood taking needle to the security that solves after current blood taking needle tube uses and the technical problem that secondary maloperation can't be solved simultaneously.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

a spring type safety blood taking needle comprises a first needle tube, a first needle seat, a safety cover and a spring, wherein one end of the first needle seat is connected with the first needle tube, the other end of the first needle seat is inserted into the safety cover, the spring is connected between one end close to the first needle tube and the first needle seat by the safety cover, an elastic back-off part and a stop part are arranged on the first needle seat, a limiting hole matched with the elastic back-off part is formed in one end close to the first needle tube by the safety cover, a limiting step and a limiting elastic sheet are arranged at one end far away from the first needle tube by the safety cover, and the limiting step and the limiting elastic sheet are respectively suitable for being abutted against two end faces of the stop part;

when the elastic reverse buckle is clamped into the limiting hole, the spring is suitable for being compressed; when the elastic back-off button is pressed down, the spring is released to drive the first needle holder to move, the stop piece moves to a position between the limiting elastic sheet and the limiting step, and the first needle tube retracts into the safety cover.

When the spring type safety blood taking needle is used for taking blood, the elastic reverse buckle on the first needle seat is clamped into the limiting hole on the safety cover, the spring is compressed, the first needle seat is fixed, the first needle tube is connected to the first needle seat, the first needle tube is fixed, and the stability during blood taking is good; when blood collection is finished, the elastic reverse buckle can be pressed down, the elastic reverse buckle is separated from the limiting hole at the moment, the spring is released, the first needle seat and the first needle tube are driven to move towards one end far away from the spring together until the stop piece on the first needle seat is clamped between the limiting elastic sheet and the limiting step, the first needle seat cannot move continuously, fixation of the first needle seat is achieved, the first needle tube also retracts into the safety cover stably at the moment, the needle point cutting edge is shielded, the first needle tube is effectively prevented from being pricked to medical personnel, and cross infection is avoided; and because the position states of the first needle tube relative to the safety cover are different before and after blood sampling, whether the first needle tube is used or not is very easy to judge according to the position of the first needle tube, the phenomenon of secondary misuse cannot occur, and the use is safer.

Optionally, the safety cover comprises an upper safety cover and a lower safety cover, and the upper safety cover is installed in cooperation with the lower safety cover.

Optionally, the side wall of the upper safety cover is provided with the limiting hole, the side wall of the lower safety cover is provided with the limiting elastic sheet and the limiting step, and the limiting elastic sheet is obliquely arranged towards the direction close to the limiting step.

Optionally, the stopper includes a connecting ear and a retaining ring disposed along the side wall of the first needle holder, and when the spring is released, the first needle holder moves to make the connecting ear abut against the limiting step and the retaining ring abut against the limiting elastic sheet.

Optionally, one end of the spring is fixed to the safety cover, and the other end of the spring is fixed to the connecting lug.

Optionally, the number of the springs is two, and the two springs are respectively located on two sides of the first needle seat, and the springs are arranged in an airfoil shape.

Optionally, the spring type safety blood taking needle further comprises a sheath, and the sheath is used for being sleeved on the first needle tube.

Optionally, this spring safety blood taking needle still includes the double wing, go up safety cover or safety cover down and be close to the one end of spring is equipped with along the reference column of axial extension, the double wing is fixed on the reference column.

Optionally, this spring safety blood taking needle still includes pipe, connecting seat and second needle tubing, first needle tubing through connect gradually the pipe the connecting seat with the second needle tubing is connected.

Optionally, this spring safety blood taking needle still includes the gum cover, the gum cover is established on the second needle tubing and with the connecting seat is fixed, the second needle tubing is suitable for impaling the gum cover is in order to insert in the blood collection pipe.

Drawings

FIG. 1 is an overall schematic view of a spring type safety blood taking needle according to an embodiment of the present invention;

FIG. 2 is an exploded view of the spring type safety blood taking needle according to the embodiment of the present invention;

fig. 3 is a schematic structural view of a first needle seat in the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a lower safety cover according to an embodiment of the present invention.

Description of the reference numerals:

1. a first needle tube; 2. a first needle seat; 21. elastic back-off; 22. a stopper; 221. connecting the ear parts; 222. a retainer ring; 3. a safety cover; 31. a safety cover is arranged; 311. a limiting hole; 312. a positioning column; 32. a lower safety cover; 321. a limiting elastic sheet; 322. a limiting step; 4. a spring; 5. a double wing panel; 6. a conduit; 7. a connecting seat; 71. a catheter hub; 72. a second needle seat; 8. a second needle tube; 9. a sheath; 10. and (4) a rubber sleeve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, it should be noted that, in the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate terms of orientation, and are only used for simplifying the positional relationship based on the drawings of the specification, and do not represent that the elements, devices, and the like indicated in the description must operate according to specific orientation and defined operation, method, and configuration, and such terms of orientation do not constitute limitations of the present invention.

A coordinate axis Y is provided herein, wherein a forward direction of the Y axis represents a forward direction and a reverse direction of the Y axis represents a rearward direction.

As shown in fig. 1-2 and 4, a spring type safety blood taking needle according to an embodiment of the present invention includes a first needle tube 1, a first needle holder 2, a safety cover 3 and a spring 4, wherein one end of the first needle holder 2 is connected to the first needle tube 1, the other end of the first needle holder 2 is inserted into the safety cover 3, the spring 4 is connected between one end of the safety cover 3 close to the first needle tube 1 and the first needle holder 2, the first needle holder 2 is provided with an elastic reverse buckle 21 and a stop piece 22, one end of the safety cover 3 close to the first needle tube 1 is provided with a limit hole 311 adapted to the elastic reverse buckle 21, one end of the safety cover 3 far away from the first needle tube 1 is provided with a limit step 322 and a limit elastic sheet 321, and the limit step 322 and the limit elastic sheet 321 are respectively adapted to be abutted against two end surfaces of the stop piece 22;

when the elastic reverse buckle 21 is clamped in the limiting hole 311, the spring 4 is suitable for being compressed; when the elastic reverse buckle 21 is pressed down, the spring 4 is released to drive the first needle holder 2 to move, the stop member 22 moves to a position between the limiting elastic sheet 321 and the limiting step 322, and the first needle tube 1 retracts into the safety cover 3.

In this embodiment, the first needle tube 1 and the first needle holder 2 are arranged along the direction of Y axis, and the first needle tube 1 is used for penetrating the skin of a patient to extract blood. The blood flow channel inside the first needle tube 1 and the first needle seat 2 is communicated with each other, so that blood extracted at the tip of the first needle tube 1 can flow into the blood collecting vessel behind along the blood flow channel.

When blood is collected, the elastic reverse buckle 21 on the first needle base 2 is clamped into the limiting hole 311 on the safety cover 3, the spring 4 is compressed, and the first needle base 2 is fixed, and the first needle tube 1 is connected to the first needle base 2, so that the first needle tube 1 is fixed, and the stability during blood collection is good; when blood collection is finished, the elastic reverse buckle 21 can be pressed down, the elastic reverse buckle 21 is separated from the limiting hole 311, the spring 4 is released, the first needle base 2 and the first needle tube 1 are driven to move towards one end far away from the spring 4 together until the stop piece 22 on the first needle base 2 is clamped between the limiting elastic piece 321 and the limiting step 322, the first needle base 2 cannot move continuously, fixing of the first needle base 2 is achieved, the first needle tube 1 retracts into the safety cover 3 stably at the moment, the needle point cutting edge is shielded, the first needle tube 1 is effectively prevented from pricking medical staff, and cross infection is avoided; and because the position states of the first needle tube 1 relative to the safety cover 3 are different before and after blood collection, whether the first needle tube 1 is used or not is very easy to judge according to the position of the first needle tube 1, the phenomenon of secondary misuse cannot occur, and the use is safer.

Alternatively, as shown in fig. 1-2, the safety cap 3 includes an upper safety cap 31 and a lower safety cap 32, and the upper safety cap 31 is installed to cooperate with the lower safety cap 32.

In the present embodiment, the detachable installation of the upper safety cover 31 and the lower safety cover 32 is adopted to facilitate the assembly of the internal components.

Optionally, as shown in fig. 2 and 4, the side wall of the upper safety cover 31 is provided with the limiting hole 311, the side wall of the lower safety cover 32 is provided with the limiting elastic sheet 321 and the limiting step 322, and the limiting elastic sheet 321 is inclined toward the direction close to the limiting step 322.

In this embodiment, the inner side wall of the upper safety cover 31 is provided with a slide way for the elastic reverse buckle 21 to move, the slide way is arranged along the direction shown by the Y axis, and when the elastic reverse buckle 21 is pressed towards one side of the lower safety cover 32 and is separated from the limit hole 311 on the upper safety cover 31, the elastic reverse buckle 21 moves along the slide way under the thrust force of the spring 4.

The limiting elastic sheet 321 is inclined towards the rear upper side, the limiting step 322 is located on the rear side of the limiting elastic sheet 321, when the spring 4 is released, the first needle holder 2 moves backwards, the limiting elastic sheet 321 is pressed downwards and slides out until the rear end face of the stop piece 22 abuts against the limiting step 322, and at the moment, the front end face of the stop piece 22 abuts against the limiting elastic sheet 321.

Optionally, as shown in fig. 3, the stopper 22 includes a connecting ear 221 and a retaining ring 222 disposed along a circumferential sidewall of the first needle holder 2, and when the spring 4 is released, the first needle holder 2 moves to make the connecting ear 221 abut against the limiting step 322 and the retaining ring 222 abut against the limiting elastic sheet 321.

In this embodiment, the connecting ear 221 is provided with a left side and a right side, a retaining ring 222 is arranged in front of the connecting ear 221, when the first needle holder 2 slides to the rearmost side, the connecting ear 221 abuts against the limiting step 322, and the retaining ring 222 abuts against the limiting elastic sheet 321.

Alternatively, one end of the spring 4 is fixed to the safety cover 3, and the other end of the spring 4 is fixed to the connection ear 221.

In this embodiment, the safety cover 3 and the connecting ear 221 are respectively provided with a mounting hole for the spring 4 to connect, and two ends of the spring 4 are respectively inserted into the corresponding mounting holes, so that the fixation can be realized.

Optionally, as shown in fig. 2, there are two springs 4 respectively located at two sides of the first needle holder 2, and the springs 4 are disposed in an airfoil shape.

In this embodiment, the two springs 4 are symmetrically disposed at the left and right sides of the first needle base 2, one end of each of the two springs 4 is connected to the corresponding connecting ear 221, and the other end of each of the two springs 4 is connected to the upper safety cover 31 and the lower safety cover 32. The spring is in a wing-shaped design, occupies space in the safety cover 3 in a reasonable layout, can generate larger compression deformation amount, and provides stable elastic force.

Optionally, as shown in fig. 1-2, the spring type safety blood taking needle further comprises a sheath 9, and the sheath 9 is used for being sleeved on the first needle tube 1.

In this embodiment, the first needle tube 1 is generally covered with a sheath 9 before being used, so as to protect the needle tip from contamination, and when taking blood, the medical staff removes the sheath 9 and pierces the first needle tube 1 into the skin of the patient.

The sheath 9 is generally disposable after being pulled out; if the sheath 9 is sleeved again after the blood sampling is finished, although the risks that the needle point exposes air and medical care personnel are accidentally injured can be avoided, the safety risk of secondary misuse can also be generated, and the sheath is not easy to be sleeved and is easy to puncture. This application is drawn out the back at sheath 9, designs on the basis that directly throws away, utilizes the compression deformation of spring 4 to reset, promotes first needle tubing 1 and contracts to safety cover 3.

Optionally, as shown in fig. 1-2, the spring type safety lancet further comprises a double-wing 5, the upper safety cover 31 or the lower safety cover 32 is provided with a positioning column 312 extending along the axial direction at one end close to the spring 4, and the double-wing 5 is fixed on the positioning column 312.

In this embodiment, the double-wing piece 5 is installed at the front end of the safety cover 3, which mainly plays a role of anti-slip, and when the medical staff uses the safety cover, the medical staff holds the double-wing piece 5 to perform puncture blood sampling operation.

Optionally, as shown in fig. 1-2, the spring type safety blood taking needle further comprises a conduit 6, a connecting seat 7 and a second needle tube 8, wherein the first needle holder 2 is connected with the second needle tube 8 through the conduit 6 and the connecting seat 7 which are connected in sequence.

In this embodiment, the connection seat 7 includes a catheter seat 71 and a second needle seat 72, the rear end of the first needle seat 2 is connected to the catheter seat 71 through the catheter 6, the catheter seat 71 is fixedly connected to the second needle seat 72, the catheter seat 71 is communicated with the inside of the second needle seat 72, the second needle tube 8 is connected to the second needle seat 72, and the blood of the patient finally flows to the second needle tube 8 through the first needle tube 1 and flows out from the second needle tube 8 to the blood collection tube.

Optionally, as shown in fig. 1-2, the spring type safety blood taking needle further comprises a rubber sleeve 10, the rubber sleeve 10 is sleeved on the second needle tube 8 and fixed with the connecting seat 7, and the second needle tube 8 is suitable for puncturing the rubber sleeve 10 to be inserted into a blood collecting tube.

In this embodiment, the rubber sleeve 10 may be screwed on the second needle holder 72, when blood sampling is required, the second needle tube 8 and the rubber sleeve 10 are inserted into the blood collection tube together, and under the action of the squeezing force, the rubber sleeve 10 deforms, and the second needle tube 8 pierces the rubber sleeve and extends into the blood collection tube, so as to achieve blood sampling.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims

1. A spring type safety blood taking needle is characterized by comprising a first needle tube (1), a first needle holder (2), a safety cover (3) and a spring (4), wherein one end of the first needle holder (2) is connected with the first needle tube (1), the other end of the first needle holder (2) is inserted into the safety cover (3), the spring (4) is connected between one end of the safety cover (3) close to the first needle tube (1) and the first needle holder (2), an elastic back-off piece (21) and a stop piece (22) are arranged on the first needle holder (2), a limiting hole (311) matched with the elastic back-off piece (21) is formed in one end of the safety cover (3) close to the first needle tube (1), a limiting step (322) and a limiting elastic sheet (321) are arranged at one end of the safety cover (3) far away from the first needle tube (1), and the limiting step (322) and the limiting elastic sheet (321) are respectively suitable for being abutted against two end faces of the stop piece (22);

when the elastic reverse buckle (21) is clamped into the limiting hole (311), the spring (4) is suitable for being compressed; when the elastic reverse buckle (21) is pressed down, the spring (4) is released to drive the first needle holder (2) to move, the stop piece (22) moves to a position between the limiting elastic sheet (321) and the limiting step (322), and the first needle tube (1) retracts into the safety cover (3).

2. A spring loaded safety lancet according to claim 1, characterised in that the safety cap (3) comprises an upper safety cap (31) and a lower safety cap (32), the upper safety cap (31) being mounted in cooperation with the lower safety cap (32).

3. A spring type safety lancet according to claim 2, wherein the side wall of the upper safety cover (31) is provided with the limiting hole (311), the side wall of the lower safety cover (32) is provided with the limiting elastic sheet (321) and the limiting step (322), and the limiting elastic sheet (321) is inclined towards the direction close to the limiting step (322).

4. A spring-loaded safety lancet according to claim 1, characterised in that the stop (22) comprises a coupling ear (221) and a collar (222) arranged along the circumferential side wall of the first hub (2), when the spring (4) is released, the first hub (2) moves so that the coupling ear (221) abuts the stop step (322) and the collar (222) abuts the stop spring (321).

5. A spring loaded safety lancet according to claim 4, characterised in that one end of the spring (4) is fixed with the safety cap (3) and the other end of the spring (4) is fixed with the connecting ear (221).

6. A spring type safety lancet according to claim 1, wherein two springs (4) are provided, respectively located at both sides of the first needle holder (2), and the springs (4) are arranged in a wing shape.

7. A spring loaded safety lancet according to claim 1, further comprising a sheath (9), the sheath (9) being adapted to fit over the first needle cannula (1).

8. A spring loaded safety lancet according to claim 2, further comprising a double wing (5), the upper (31) or lower (32) safety cover being provided with an axially extending locating post (312) at an end adjacent the spring (4), the double wing (5) being secured to the locating post (312).

9. A spring type safety lancet according to claim 1, further comprising a conduit (6), a connecting seat (7) and a second needle tube (8), the first needle seat (2) being connected with the second needle tube (8) through the conduit (6), the connecting seat (7) which are connected in sequence.

10. A spring loaded safety lancet according to claim 9, further comprising a rubber sleeve (10), the rubber sleeve (10) being fitted over the second needle tube (8) and being fixed with the connecting seat (7), the second needle tube (8) being adapted to pierce the rubber sleeve (10) for insertion into a blood collection vessel.