CN104188669B - The anti-aculeus blood-taking pin of disposable use - Google Patents

Abstract

The invention relates to a one-time use anti-puncture blood collection needle. It includes a sheath, a blood collection needle tube and a catheter, a pullback device is provided between the blood collection needle tube and the catheter, and an anti-needle protection sheath is set on the pullback device. Two axial guide ribs are arranged on the outer wall of the pull-back device, and two guide grooves that are movably matched with the guide ribs are arranged on the inner wall of the anti-acupuncture protective cover. Since a self-locking groove is provided at the guide edge on the upper part of the pull-back device, and a self-locking protrusion that is buckled with the self-locking groove is provided at the lower part of the anti-acupuncture protective cover, after the blood collection is completed, pull the When the handle is pulled back and the self-locking groove on the upper part of the pull-back device reaches the self-locking convex position on the lower part of the anti-acupuncture protection cover, the self-locking groove and the self-locking convex buckle cooperate to connect the pull-back device and the anti-acupuncture protection. Set automatically locks. The needle tube enters the anti-needle sheath, so as to achieve the purpose of anti-needle.

Description

Disposable anti-needle blood collection needle

technical field

The invention relates to a medical device, in particular to a disposable anti-needle puncture blood collection needle.

Background technique

At present, non-needle-proof blood collection needles are widely used in clinical blood collection for medical treatment of patients. Therefore, during the collection, transportation and processing of blood collection needles after blood collection, the needle will scratch medical staff and related personnel if you are not careful. of the operator.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the existing blood collection needles and provide a blood collection needle with anti-needle function.

The present invention comprises a sheath, a blood collection needle tube and a catheter. A pullback device is provided between the blood collection needle tube and the catheter. The center of the axis of the pullback device is a blood channel. The upper end of the blood channel is connected to the blood collection needle tube, and the lower end of the blood channel is connected to the catheter. , The anti-needle protective sleeve is set on the pullback device.

In the present invention, two axial guide ribs are arranged on the outer wall of the pull-back device, and two guide grooves movably matched with the guide ribs are arranged on the inner wall of the anti-acupuncture protective cover.

In the present invention, a self-locking groove is provided at the guide edge on the upper part of the pullback device, and a self-locking protrusion that snaps and fits with the self-locking groove is provided at the lower part of the anti-acupuncture protective cover.

In the present invention, an annular groove is provided on the upper part of the pull-back device, and a protruding ring snap-fitting with the annular groove is arranged on the upper part of the anti-needle protection sheath. The ring groove and the protruding ring constitute the buckle of the reaction force of the anti-needle puncture protective cover, which effectively prevents the problem of retraction of the pullback device during the puncture process.

In the present invention, a puncture handle is provided on the right side of the anti-needle-puncture protective cover; concave-convex anti-skid patterns are provided on the upper side of the anti-acupuncture protective cover, aiming at making medical personnel improve their working ability during puncture and blood collection. Operability.

In the present invention, since a self-locking groove is provided at the guide edge on the upper part of the pullback device, and a self-locking protrusion that snaps into the self-locking groove is provided at the lower part of the anti-acupuncture protective cover, when the blood collection is completed, Finally, pull down the pull-back handle, and when the self-locking groove on the upper part of the pull-back device reaches the self-locking convex position on the lower part of the anti-acupuncture protective cover, the self-locking groove and the self-locking convex buckle cooperate to connect the pull-back device and the anti-needle protection cover. Needle puncture guard locks automatically. The needle tube enters the anti-needle sheath, so as to achieve the purpose of anti-needle.

Description of drawings

Fig. 1 is an exploded view of the parts of the embodiment; Fig. 2-Fig. 7 is a structural schematic diagram of the cooperative relationship between the pullback device and the anti-needle protection cover, wherein Fig. 2-Fig. 3 is a state diagram before use, and Fig. 4 is a state diagram after use , Fig. 3 is the A-A sectional view of Fig. 2, Fig. 5 is the B-B sectional view of Fig. 2, Fig. 6 is the C-C sectional view of Fig. 4, Fig. 7 is the D-D sectional view of Fig. 4, and Fig. 8 is an overall appearance view of the embodiment.

In the figure, 1, sheath; 2, anti-acupuncture protective cover; 21, puncture handle; 22, self-locking protrusion of anti-acupuncture protective cover; 23, guide groove of anti-acupuncture protective cover; 24, convex ring; 25, 3. Blood collection needle tube; 4. Pullback device; 41. Handle of pullback device; 42. Blood channel; 43. Self-locking slot of pullback device; 44. Guide edge of pullback device; 45. Ring groove; 5. Catheter; 6. Connecting seat; 7. Needle seat; 8. Rubber plug puncture needle; 9. Rubber plug puncture protective cover.

detailed description

Referring to Fig. 1-Fig. 8, the disposable anti-acupuncture blood collection needle consists of a sheath 1, an anti-acupuncture protective cover 2, a blood collection needle tube 3, a pullback device 4, a catheter 5, a connecting seat 6, a needle seat 7, and a rubber stopper The puncture needle 8 and the rubber stopper puncture protective cover 9 are composed. Between the blood collection needle tube 3 and the catheter 5, a pullback device 4 is provided. The axis center of the pullback device 4 is a blood channel 42, and the upper end of the blood channel 42 is connected to the blood collection needle tube 3 , the lower end of the blood channel 42 is connected to the catheter 5 , and the anti-needle protection sheath 2 is sheathed on the pullback device 4 . On the outer wall of the pullback device 4, two axial guide ribs 44 are provided, and on the inner wall of the anti-needle protection sheath 2, two guide grooves 23 that are movably matched with the guide ribs 44 are provided. A self-locking groove 43 is provided at the guide edge 44 on the upper part of the pullback device 4 , and a self-locking protrusion 22 snap-fitting with the self-locking groove 43 is provided at the lower part of the anti-acupuncture protection sheath 2 . After the blood collection is completed, the pull-back handle is pulled down, and when the self-locking groove 43 on the top of the pull-back device 4 reaches the position of the self-locking protrusion 22 on the bottom of the anti-acupuncture protective cover 2, the self-locking groove 43 and the self-locking protrusion are locked. 22. The snap fit automatically locks the pullback device 4 and the anti-needle protection cover 2. The needle tube 3 enters the anti-acupuncture protective sheath 2, thereby achieving the purpose of anti-acupuncture. An annular groove 45 is provided on the upper part of the pullback device 4 , and a protruding ring 24 snap-fitted with the annular groove 45 is provided on the upper part of the anti-needle protection sheath 2 . The ring groove 45 and the protruding ring 24 constitute the reaction force buckle of the anti-needle puncture protective cover, which effectively prevents the retraction of the pullback device during the puncture process. On the right side of the anti-needle puncture protective cover 2, a puncture handle 21 is provided; on the upper side of the anti-needle puncture protective cover 2, there are concave-convex anti-slip lines 25, which are intended to enable medical personnel to improve their performance during puncture and blood collection. its operability.

Claims (2)

1. the anti-aculeus blood-taking pin of disposable use, comprise sheath (1), blood-collecting needle tube (3) and conduit (5), it is characterized by: between blood-collecting needle tube (3) and conduit (5), be provided with withdrawing device (4), withdrawing device (4) Zhou center is blood channel (42), the upper end of blood channel (42) connects blood-collecting needle tube (3), and the lower end connecting duct (5) of blood channel (42) is arranged with anti-acupuncture protective sleeve (2) on withdrawing device (4); At the lateral wall of withdrawing device (4), be provided with two and axially lead rib (44), in the lower end of withdrawing device (4), be provided with withdrawing device handle (41), at the madial wall of anti-acupuncture protective sleeve (2), be provided with two with described in lead the moving guide groove (23) coordinating of rib (44); The rib (44) of leading on withdrawing device (4) top is located, and is provided with self-locking catching groove (43), in the bottom of anti-acupuncture protective sleeve (2), is provided with the self-locking card convex (22) being clasped with described self-locking catching groove (43); On the top of withdrawing device (4), be provided with annular groove (45), on the top of anti-acupuncture protective sleeve (2), be provided with the bulge loop (24) being clasped with described annular groove (45).

2. anti-aculeus blood-taking pin according to claim 1, is characterized by: on the right side of described anti-acupuncture protective sleeve (2), be provided with puncture handle (21); At the upside of described anti-acupuncture protective sleeve (2), be provided with concavo-convex anti-slip veins (25).