CN201939855U - Acupuncture-prevention venous retention needle - Google Patents

Abstract

The utility model discloses an acupuncture-prevention venous retention needle which consists of a needle sheath, a conduit assembly and a puncture needle assembly, wherein the conduit assembly comprises a conduit, a three-way conduit seat, a funnel, a sealing plug, a hose, a three-way seat, a heparin cap, an end cap and a clamp; the puncture needle assembly comprises a puncture needle tube, a needle seat with a wing and an acupuncture-prevention device; and the acupuncture-prevention device consists of a connecting piece, a hollow sliding sleeve and a locking buckle. In the process that the acupuncture-prevention venous retention needle normally retreats from the puncture needle tube, the tip of the puncture needle tube is simultaneously shielded in the hollow sliding sleeve, thereby preventing infection to medical care personnel due to accidental puncture of a used puncture needle. In addition, as the acupuncture-prevention venous retention needle is only additionally provided with the acupuncture-prevention device, and the needle tube seat is improved, the structure is simple, the operation is convenient, the production process is simple, and further the production cost is low.

Description

Anti-needle venous indwelling needle

technical field

The utility model relates to a disposable medical device, in particular to an anti-acupuncture venous indwelling needle.

Background technique

The disposable venous indwelling needles currently used in clinical units of various domestic medical institutions are mainly composed of needle sheaths, catheter assemblies, and puncture needle assemblies. Among them: catheter assemblies include catheters, three-way catheter sockets, funnels, sealing plugs, and hoses. , three-way seat, heparin cap, end cap, clip, the catheter is sleeved from the outer wall of the funnel to the root and locked on the inner wall of the inner cavity of the head of the three-way catheter seat through the funnel, a clip is connected in the middle of the hose, and its two ends are connected to the three-way catheter The catheter base and the three-way base are firmly connected, the heparin cap and the end cap are screwed tightly on the straight hole and the side port of the three-way base, and the sealing plug is installed and sealed at the branch in the straight hole of the three-way catheter base; the puncture needle assembly It consists of a puncture needle tube and a winged needle seat. When this product is used clinically, the puncture needle is used to puncture the peripheral vein of the human body, and at the same time, the catheter is brought into the blood vessel, the puncture needle is pulled out, and the catheter is left in the blood vessel of the human body for several days, thereby avoiding the patient's repeated venipuncture. Pain, and thus widely used clinically. However, the problem of how to prevent the puncture needle from causing harm to the medical staff after the patient is punctured is placed in front of people, especially the puncture after being used by patients with infectious diseases (such as: hepatitis B, AIDS patients). The consequences of a needlestick injury are unimaginable.

Utility model content

The purpose of the utility model is to provide an anti-acupuncture venous indwelling needle, which can shield the puncture needle in the hollow sliding sleeve when the puncture needle is pulled out after the venipuncture is completed, thereby preventing medical staff from being accidentally exposed to the puncture needle. Piercing.

In order to achieve the above purpose, the utility model adopts the following technical solutions: the utility model is composed of a needle sheath, a catheter assembly, and a puncture needle assembly, wherein: the catheter assembly includes a catheter, a three-way catheter seat, a funnel, a sealing plug, a hose, three Through seat, heparin cap, end cap, clip, the catheter is sleeved from the outer wall of the funnel to the root and locked to the inner wall of the inner cavity of the head of the three-way catheter holder through the funnel. It is firmly connected with the three-way seat, the heparin cap and end cap are screwed tightly on the straight hole and the side port of the three-way seat, and the sealing plug is installed and sealed at the branch in the straight hole of the three-way catheter seat; the puncture needle assembly includes a puncture Needle tube, winged needle seat and anti-acupuncture device. The anti-acupuncture device is composed of a connecting piece, a hollow sliding sleeve and a locking buckle. The puncture needle tube passes through the sealing plug, so that the inclined surface of the needle tip is completely exposed at the end of the catheter head until the root of the inclined surface is exposed. The part is between 0 and 1mm, and the winged needle seat is placed in the hollow sliding sleeve of the anti-acupuncture device, and the anti-acupuncture device is set on the big end of the straight hole of the three-way catheter seat; The rear part of the tapered boss undercut and the anti-acupuncture device is provided with a buckle locked with the tapered boss undercut, and the hollow sliding sleeve is provided with an axial chute, and the connecting piece of the anti-acupuncture device is sleeved on the The straight-through large orifice end of the three-way catheter seat; the puncture needle tube has at least one side hole 2 mm to 7 mm below the root of the inclined plane; the wing of the winged needle seat is flat, and the wing can be designed as a single wing or as a Two wings, the shape of the two wings can be the same or different; the chute of the hollow sliding sleeve of the anti-acupuncture device can be set as a single groove or double groove; the inner hole of the locking buckle can be set as a spline groove type or a round type buckle; the back buckle at the rear end of the winged needle seat can be set in the shape of a conical boss or a double-sided card shape; the connecting piece, hollow sliding sleeve and locking buckle in the anti-needle device can be divided into three parts. It is an accessory that can integrate the connecting piece with the hollow sliding sleeve or the hollow sliding sleeve and the locking buckle; the length of the chute of the hollow sliding sleeve should be greater than the length of the puncture needle tube.

Due to the adoption of the above-mentioned technical solution, during the normal withdrawal process of the puncture needle tube, the tip of the puncture needle tube is shielded in the hollow sliding sleeve at the same time, thereby preventing the medical staff from being accidentally stabbed by the used puncture needle and causing infection. In addition, the utility model only adds an anti-acupuncture device, and improves the needle tube seat, so that the structure is simple, the operation is convenient, and the production process is not complicated, so the production cost is low.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the puncture needle assembly of the present invention being pulled out to the middle of the hollow sliding sleeve;

Fig. 3 is a schematic structural view of the catheter assembly after the puncture needle assembly of the present invention is drawn out;

Fig. 4 is a schematic structural view of the puncture needle of the present invention being pulled out to the bottom of the hollow sliding sleeve and shielded.

Detailed ways

Below in conjunction with embodiment and with reference to accompanying drawing, the utility model is described in further detail.

As can be seen from Figure 1, the utility model is composed of a needle sheath 14, a catheter assembly, and a puncture needle assembly, wherein: the catheter assembly includes a catheter 5, a three-way catheter seat 2, a funnel 6, a sealing plug 3, a hose 7, three Through seat 8, heparin cap 9, end cap 10, clip 11, the catheter 5 is set on the outer wall of the funnel 6 to the root and locked on the inner wall of the inner cavity of the head of the three-way catheter adapter 2 through the funnel 6, and a clip is connected in the middle of the hose 7 11. Its two ends are firmly connected with the three-way catheter seat 2 and the three-way seat 8, the heparin cap 9 and the end cap 10 are screwed on the straight hole and the side port of the three-way seat 8, and the sealing plug 3 is installed on the three-way catheter Seat 2 goes straight through the branch in the hole and seals it; the puncture needle assembly includes puncture needle tube 1, winged needle seat 4 and anti-acupuncture device, which consists of connecting piece 13, hollow sliding sleeve 12 and locking buckle 12b , the puncture needle tube 1 passes through the sealing plug 3, so that the inclined surface of the needle point is completely exposed at the end of the catheter 5, and the exposed part of the root of the inclined surface is between 0 and 1 mm, and the winged needle seat 4 is placed in the hollow sliding sleeve 12 of the anti-acupuncture device , the anti-acupuncture device is set on the big end of the straight hole of the three-way catheter seat 2; it is characterized in that: the rear end of the winged needle seat 4 is provided with a conical boss undercut 4a and the rear part of the anti-acupuncture device is provided with a conical convex The buckle of the table undercut lock 12b, the hollow sliding sleeve 12 is provided with an axial chute 12a, the connector 13 of the anti-acupuncture device is sleeved on the straight-through large orifice end of the three-way catheter seat 2; the puncture needle tube 1 is in the There is at least one side hole 1a below 2mm to 7mm of the root of the slope; the wings of the winged needle holder 4 are flat, and the wings can be designed as single wings or double wings, and the shapes of the wings can be the same or different; The chute 12a of the hollow sliding sleeve 12 of the anti-acupuncture device can be set as a single groove or double groove; the inner hole of the locking buckle 12b can be set as a spline groove type or a round buckle; The undercut 4a at the end can be set as a tapered boss shape or a double-sided card shape; the connecting piece 13, the hollow sliding sleeve 12 and the locking buckle 12a in the anti-acupuncture device can be divided into three parts, and the connecting piece can also be divided into three parts. 13 and the hollow sliding sleeve 12 or an accessory that integrates the hollow sliding sleeve 12 and the locking buckle 12a; the length of the chute of the hollow sliding sleeve 12 should be greater than the length of the puncture needle tube.

In Fig. 2, the utility model returns the puncture needle assembly to the middle part of the hollow sliding sleeve after the puncture is successful, and prepares for taking the puncture needle assembly out of the three-way catheter socket.

In Fig. 4, the puncture needle of the present utility model pulls back the winged needle seat 4 after the puncture is successful, until the undercut 4a is locked with the locking buckle 12a, and the needle tip is shielded in the hollow sliding sleeve, thereby avoiding being stabbed by the puncture needle .

In Fig. 3, after the puncture needle assembly of the present invention is pulled out, the sealing plug 3 in the catheter assembly is automatically closed due to its own elasticity so that the infusion pipeline does not leak.

Claims (8)

1. An anti-acupuncture venous indwelling needle, consisting of a needle sheath, a catheter assembly, and a puncture needle assembly, wherein: the catheter assembly includes a catheter, a three-way catheter seat, a funnel, a sealing plug, a hose, a three-way seat, and a heparin cap , end cap, clip, the catheter is sleeved from the outer wall of the funnel to the root and locked on the inner wall of the inner cavity of the head of the three-way catheter seat through the funnel, a clip is connected in the middle of the hose, and its two ends are firmly connected to the three-way catheter seat and the three-way seat Connection, the heparin cap and the end cap are screwed tightly on the straight hole and the side port of the three-way seat, and the sealing plug is installed and sealed at the branch in the straight-through hole of the three-way catheter seat; the puncture needle assembly includes a puncture needle tube, a winged needle Seat and anti-acupuncture device. The anti-acupuncture device is composed of a connecting piece, a hollow sliding sleeve and a locking buckle. The puncture needle tube passes through the sealing plug, so that the inclined surface of the needle tip is completely exposed at the end of the catheter head, and the exposed part at the root of the inclined surface is 0-1mm Between them, the winged needle seat is placed in the hollow sliding sleeve of the anti-acupuncture device, and the anti-acupuncture device is placed on the large end of the straight hole of the three-way catheter seat; The rear part of the buckle and the anti-acupuncture device is provided with a buckle locked with the conical boss upside down, and the hollow sliding sleeve is provided with an axial chute, and the connecting piece of the anti-acupuncture device is sleeved on the three-way catheter seat. Straight through large orifice end. 2. The anti-acupuncture venous indwelling needle according to claim 1, characterized in that: said puncture needle tube is provided with at least one side hole 2 mm to 7 mm below the root of the slope. 3. The anti-acupuncture venous indwelling needle according to claim 1, characterized in that: the wing of the winged needle holder is flat, and the wing can be designed as a single wing or double wing, and the shape of the wing can be Same or different. 4. The anti-acupuncture venous indwelling needle according to claim 1, characterized in that: the sliding groove of the hollow sliding sleeve of the anti-acupuncture device can be set as a single groove or double groove. 5. The anti-acupuncture venous indwelling needle according to claim 1, characterized in that: the inner hole of the locking buckle can be set as a spline groove type or a round buckle. 6. The anti-acupuncture venous indwelling needle according to claim 1, characterized in that: the undercut at the rear end of the winged needle holder can be in the shape of a conical boss or a double-sided card shape. 7. The anti-acupuncture venous indwelling needle according to claim 5, characterized in that: the connecting piece, the hollow sliding sleeve and the locking buckle in the anti-acupuncture device can be divided into three parts, and the connection can also be divided into three parts. It is an accessory that integrates the hollow sliding sleeve or the hollow sliding sleeve with the locking buckle. 8. The anti-acupuncture venous indwelling needle according to claim 4, characterized in that: the length of the chute of the hollow sliding sleeve should be greater than the length of the puncture needle tube.

Images