CN102670213A - Disposable anti-pricking venous blood sampling needle - Google Patents

Abstract

The invention discloses a one-time anti-acupuncture venous blood collection needle, comprising a needle sheath, a venous needle tube, a needle handle, a thin hose, a needle seat, a puncture needle seat, a blood collection needle tube, a rubber sheath and an anti-acupuncture sheath , the venous needle tube, needle handle, thin hose, and needle seat are sequentially connected by adhesive, the puncture needle seat and blood collection needle tube are bonded by adhesive, the needle sheath is sleeved on the needle handle, the puncture needle seat is screwed into the needle seat, and the rubber The sheath protects the blood collection needle tube in the sheath and is clipped on the other end of the puncture needle seat. The sleeve is formed by folding and pressing from both sides. After the locking, the rear part is a closed ring, and a zigzag slot is formed on the side wall of the front part of the buckle along the axial direction; the present invention uses After the needle is pulled out, you only need to pull the needle handle back into the anti-needle sheath, so as to prevent the bloody needle from accidentally pricking others and causing infection, thereby enhancing the protection of medical staff.

Description

Disposable anti-needle venous blood collection needle

technical field

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

Background technique

Most of the disposable venous blood collection needles used clinically in clinical units of domestic medical institutions are composed of needle sheath, venous needle tube, needle handle, thin hose, needle seat, puncture needle seat, blood collection needle tube and rubber sheath. After use, since the venous needle tube is exposed without a protective device, it is easy to cause secondary pollution to medical staff or personnel who handle medical waste by accident, especially the used needles of patients with AIDS, hepatitis B, hepatitis C, etc.; Anti-acupuncture intravenous infusion needles also appear on the Internet, but these products have certain defects, such as the "disposable butterfly needle safety needle cover" with the patent number 03102395.9: 1. Inconvenient operation, difficult to observe blood return 2. The needle is not easy to fix after the puncture, and it often loosens to cause inconvenience to the nurse; the patent No. 02112068.4 "a kind of single-wing infusion needle with safety device" also has problems: the automatic assembly of the existing venous infusion needle is directly connected to the needle through the thin tube. The needle handle assembly and the needle seat are bonded and assembled, and the safety device is to penetrate the thin hose from the inner hole of the safety device, so it is difficult to connect with the existing technology, and the assembly cannot be suitable for the existing automatic assembly, and cannot be scaled. production; other patents are also faced with several such problems.

Contents of the invention

The purpose of the present invention is to provide a disposable anti-needle venous blood collection needle, which can be assembled on the basis of the existing automatic assembly of infusion needles, and can observe blood return without changing the original operation method. After the needle is pulled out, it can protect the needle of the infusion needle from being exposed, so as to avoid the secondary infection caused by the accidental puncture of the needle after the patient uses it.

In order to achieve the above object, the present invention adopts the following technical solutions: the present invention includes a needle sheath, a venous needle tube, a needle handle, a thin hose, a needle holder, a puncture needle holder, a blood collection needle tube, a rubber sheath and an anti-acupuncture sheath, and the venous The needle tube, needle handle, thin hose and needle seat are sequentially connected by adhesive, the puncture needle seat and blood collection needle tube are bonded by adhesive, the needle sheath is sleeved on the needle handle, the puncture needle seat is screwed into the needle seat, and the rubber sheath The blood collection needle tube is protected in the sleeve and clipped on the other end of the puncture needle seat. It is characterized in that: the anti-needle sheath is clipped on the thin hose and can slide back and forth on the thin hose. The anti-needle sheath is One is formed by folding and pressing from both sides, and after the locking, the rear part is a closed ring, and a zigzag slot is formed on the side wall of the front part of the buckle along the axial direction.

Before the anti-acupuncture sheath is engaged, the upper and lower covers can be connected by side connection points on one side, and the rear parts of the other two sides are provided with buckles and matching holes.

The anti-acupuncture sheath can also be formed by separating the upper cover and the lower cover and locking the two sides through buckles.

The upper or lower wall of the axially tortuous slot of the anti-needle sheath is provided with non-return steps, convex points and corresponding depressions.

The edge connecting points of the anti-needle sheath can be 2 or 3 or more.

The front part of the anti-acupuncture sheath is an open oblique ellipse shape, the unopened part is at the end of the edge connection point, and the open part is the starting point of the slot.

Since the anti-needle sheath is formed by one-time injection molding of two flip covers with inner grooves connected by the connection point before assembly, it can be used for needle sheath, venous needle tube, needle handle, thin hose, needle seat, puncture After the needle seat, blood collection needle tube, and rubber sheath are assembled, the anti-needle sheath is clamped on the thin hose, which is suitable for automatic assembly line assembly under existing conditions.

In addition, during the operation of the present invention, the original operation method of the medical staff is not changed, but after pulling out the needle, it is necessary to pinch the buckle position of the anti-acupuncture sheath with one hand, and return the back of the anti-acupuncture sheath with the other hand. The thin tube pulls the needle handle back into the anti-needle sheath, which can prevent the patient from accidentally stabbing others with bloody needles and causing infection, thereby enhancing the safety protection of medical staff and related personnel.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of the anti-acupuncture sheath of the present invention before engagement;

Fig. 3 is a structural schematic diagram of the anti-acupuncture sheath of the present invention after engagement;

Fig. 4 is a front view, a left view (direction A) and a right view (direction B) of the anti-needle sheath of the present invention;

Fig. 5 is a schematic diagram of the needle point of the needle handle and needle tube of the present invention being inserted into the anti-needle sheath;

Fig. 6 is another structural schematic diagram of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

Example 1

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, Embodiment 1 of the present invention consists of needle sheath (1), puncture needle tube (2), needle handle (3), thin flexible tube (4), needle hub ( 5), puncture needle holder (6), blood collection needle tube (7), rubber sheath (8) and anti-needle sheath (9), venous needle tube (2), needle handle (3), thin hose (4) 1. The needle base (5) is sequentially connected by adhesive, the puncture needle base (6) and the blood collection needle tube (7) are bonded by adhesive, the needle sheath (1) is sleeved on the needle handle (3), and the puncture needle base (6) Screwed in the needle seat (5), the rubber sheath (8) protects the blood collection needle tube (7) in the sleeve and is clipped on the other end of the puncture needle seat (6). It is characterized in that: the anti-needle sheath ( 9) The ferrule is fitted on the thin hose (4) and can slide back and forth on the thin hose (4). The anti-acupuncture sheath (9) is formed by folding and pressing from both sides. After the engagement, The rear part is a closed ring, and a meandering slot (9-9) is formed in the axial direction on the front side wall of the buckle.

Before the anti-acupuncture sheath (9) of the present invention is engaged, the upper and lower covers can be connected by side connection points (9-7) on one side, and buckles (9-4) are provided on the rear of the other two sides And the card hole (9-3) that cooperates with it.

The anti-acupuncture sheath (9) of the present invention can also be formed by separating the upper cover and the lower cover and snapping the two sides together.

The upper or lower wall of the axially tortuous slot (9-9) of the anti-needle sheath (9) of the present invention is provided with a non-return step (9-5), a raised point (9-1) and a corresponding Depression (9-2) (9-6).

The edge connecting points (9-7) of the anti-needle sheath of the present invention can be 2 or 3 or more.

The front part (9-8) of the anti-acupuncture sheath (9) of the present invention is an open oblique ellipse shape, the opening is at the end of the side connection point, and the opening is the starting point of the slot (9-9) .

As shown in Figure 2 and Figure 3, the buckle (9-4), clamping hole (9-3), non-return step (9-5), raised point (9) of the anti-acupuncture sheath (9) of the present invention -1) and the corresponding depressions (9-2) (9-6) positions can also be symmetrically exchanged on the upper and lower covers, and more than two corresponding raised points can also be established on the slots (9-9) (9-1) and depression (9-2).

As shown in Figure 4, the inner hole of the left end of the anti-acupuncture sheath (9) of the present invention is slightly smaller than the inner hole of the right end, and its inner hole can also be the same.

As shown in Figure 5, the needle point of the needle handle (3) and the needle tube (2) of the present invention is pulled back and inserted into the anti-acupuncture sheath (9) after the needle is pulled out after the infusion, and the handle of the needle handle (3) is The non-return step (9-5) on the anti-needle sheath (9) is blocked in the draw-in groove of the slit (9-9) and cannot advance and retreat, and the needle point of the needle tube (2) is also blocked by the anti-needle sheath ( 9) The upper groove wall and the raised point (9-1) are shielded, thereby preventing the medical staff from being stabbed.

Example 2

As shown in Fig. 6, it is Embodiment 2 of the present invention, which differs from Embodiment 1 in that the puncture needle seat (6) is directly bonded to the thin hose (4) by adhesive.

The embodiments described above are only preferred implementations of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, various modifications and improvements can be made to the accessories, which should also be considered as belonging to the protection scope of the present invention.

Claims (6)

1. the acupuncture vein blood taking needle is prevented in a disposable use; Comprise needle shield, vein needle tubing, needle handle, small hose, needle stand, Paracentesis needle holder, blood sampling needle tubing, rubber sheath and anti-acupuncture sheath, vein needle tubing, needle handle, small hose, needle stand are linked in sequence through adhesive, Paracentesis needle holder, the blood sampling needle tubing through adhesive bonding; Needle shield is socketed on the needle handle; Paracentesis needle holder is rotatably connected in the needle stand, rubber sheath with the blood taking needle protection of pipe in cover and cutting ferrule in the other end of Paracentesis needle holder, it is characterized in that: anti-acupuncture sheath cutting ferrule is in also can on small hose, slidably reciprocating on the small hose; Anti-acupuncture sheath be one from both sides folding press the back engaging to form; After the engaging, its rear portion is a closed-loop, and the anterior sidewall upper edge of buckle has axially then formed a full of twists and turns line of rabbet joint.

2. the acupuncture venoclysis needle is prevented in disposable use as claimed in claim 1, it is characterized in that: described anti-acupuncture sheath is before engaging, and can be a side connect through the limit junction point upper and lower cover, and the rear portion of both sides is provided with the buckle and the hole clipping of cooperation with it in addition.

3. the acupuncture venoclysis needle is prevented in disposable use as claimed in claim 1, it is characterized in that: described anti-acupuncture sheath also can be separately to be formed through buckle engaging both sides by upper and lower cover.

4. the acupuncture venoclysis needle is prevented in disposable use as claimed in claim 1, it is characterized in that: on the axial zigzag line of rabbet joint of described anti-acupuncture sheath or lower wall be provided with non-return step, raised points and corresponding with it depression.

5. like claim 1, the anti-acupuncture venoclysis needle of 2 described disposable uses, it is characterized in that: the limit junction point of described anti-acupuncture sheath can be 2 or 3 or a plurality of.

6. like the anti-acupuncture venoclysis needle of the described disposable use of claim 1-5, it is characterized in that: the front portion of described anti-acupuncture sheath is the oblique ellipse shape of an opening, not opening part on the limit junction point end, opening part is the starting point of the line of rabbet joint.

Images