CN203235095U - Needle-puncture-preventing injector - Google Patents

Abstract

The utility model belongs to the technical field of medical instruments and relates to a syringe, in particular to an anti-acupuncture syringe. It solves the problems that the existing syringes are easy to be stabbed by needles and the like during operation. Including a syringe, the end of the syringe is provided with a needle head, a piston and a piston rod connected to the piston are arranged in the syringe, the needle head is covered with an anti-acupuncture cap capable of moving along the axial direction of the needle head, The anti-needle cap is connected with a connecting rod, and the connecting rod is slidably connected with the slide rail which is arranged on the needle cylinder and extends along the axial direction of the needle cylinder. A positioning mechanism that can realize the axial positioning of the connecting rod when it is on the top of the needle. The advantages of this anti-acupuncture syringe are: the design is simple and reasonable, and the operation is convenient. When the anti-acupuncture cap is located on the top of the needle, it can effectively prevent the needle from being exposed, realize the anti-acupuncture effect, avoid misuse and cause needle injury, and have high safety. , low cost, good protection effect.

Description

Anti-needle Syringes

technical field

The utility model belongs to the technical field of medical instruments and relates to a syringe, in particular to an anti-acupuncture syringe.

Background technique

Syringes, as a common medical device, are used to inject liquids or gases into or withdraw them from body tissues. However, during the routine operation of the syringe, for example, the situation that the medical staff is stabbed by the syringe needle often occurs when the needle is extracted, bent, destroyed, and the needle is picked up and put into the sharps box. Needlestick injury is an accidental injury deep enough to cause the injured person to bleed. After needlestick injury, the blood contaminated by pathogens often enters the injured person's body, leading to iatrogenic infection transmitted by blood, which makes the medical staff's life There are great hidden dangers in safety. In addition, existing syringes also have problems such as complex structure, high cost, and inconvenient operation.

In order to solve the problems existing in the prior art, people have carried out long-term exploration and proposed various solutions. For example, the Chinese patent literature discloses a syringe with a safety protection slide [Application No.: 01113478.X]. The protective sliding sleeve is divided into front and rear sections, the front section is a closed section, the fixing frame is installed on the needle seat, and the front locking rotating blade and the rear locking rotating blade are set on the fixing frame, one end of the spring is against the fixing frame, and the other end is connected The front section of the sliding sleeve is offset, and the injection needle passes through the spring.

The above scheme improves the existing problem of poor safety to a certain extent, and prevents accidental stabbing during use by adding a cylindrical protective sleeve, but this greatly increases the production cost of the syringe and also brings a lot of inconvenience to the use. In addition, the program still exists: complex structure, unreasonable design, inconvenient operation, poor protection effect and other problems.

Contents of the invention

The purpose of this utility model is to solve the above problems and provide an anti-acupuncture syringe with reasonable design, simple structure, and prevention of accidental needle punctures.

In order to achieve the above object, the utility model adopts the following technical solutions: the anti-acupuncture syringe includes a syringe, the end of the syringe is provided with a needle, and a piston and a piston rod connected to the piston are arranged in the syringe. , characterized in that the needle is covered with an anti-needle cap that can move axially along the needle, the anti-needle cap is connected with a connecting rod, and the connecting rod is connected to the needle The sliding rails on the barrel and extending along the axial direction of the needle barrel are slidingly connected, and a positioning mechanism that can realize the axial positioning of the connecting rod when the anti-needle cap is placed on the top of the needle is provided between the connecting rod and the sliding rail. The position of the anti-needle cap on the needle is controlled by sliding the connecting rod. When the anti-acupuncture cap is placed on the top of the needle, the anti-acupuncture cap is fixed on the top of the needle by the positioning mechanism, so that the top of the needle is wrapped by the anti-needle cap , to avoid being accidentally stabbed by needles during use.

In the above-mentioned anti-needle syringe, the positioning mechanism includes a sealing plate arranged on the upper end of the slide rail and a positioning block arranged on the connecting rod. The positioning block can be passed through the positioning hole when it is set on the top of the needle. The sealing plate makes it difficult for the connecting rod to break away from the slide rail, and when the positioning block is located in the positioning hole, it can prevent the anti-acupuncture cap body from retreating and falling off.

In the above-mentioned anti-needle syringe, the connecting rod is provided with a control structure capable of disengaging the positioning block from the positioning hole. The control structure can separate the positioning block from the positioning hole.

In the above-mentioned anti-needle syringe, the control structure includes a support slider arranged on the connecting rod and in contact with the slide rail and a pressing end arranged at the lower end of the connecting rod, and the support slider is located above the positioning block , the pressing end is located below the positioning block, the pressing end is tilted outward, and when the pressing end is pressed down, the connecting rod can deform with the supporting slider as the fulcrum so that the positioning block is separated from the positioning hole . That is, when the pressing end is pressed, the connecting rod deforms with the supporting slider as the fulcrum, so that the positioning block breaks away from the positioning hole, and the connecting rod continues to slide to make the anti-needle cap body break away from the top of the needle.

In the above-mentioned anti-needle syringe, the positioning block is wedge-shaped, and the end of the positioning block away from the needle is higher than the end close to the needle. It is convenient to push the positioning block into the positioning hole, and the positioning block is not easy to disengage after entering the positioning hole.

In the above-mentioned anti-needle syringe, the positioning block is made of hard material or elastic material.

In the above-mentioned anti-needle syringe, the connecting rod is made of strips of equal thickness and is in a bent shape. The bending shape of the connecting rod is that when the anti-needle cap is at the bottom of the needle Conforms to the cylinder shape. The connecting rod fits the curvature of the needle without causing any inconvenience to the medical staff.

In the above-mentioned anti-needle syringe, the connecting rod, the pressing end, the support slider and the positioning block are connected as one and formed by plastic at one time; the sealing plate, slide rail and syringe are connected as one and formed by The plastic is molded at one time; the needle-proof cap body is made of rubber. The one-piece structure makes the structure stronger and lower in cost.

In the above-mentioned anti-needle syringe, the anti-needle cap body is hourglass-shaped, and an axial through hole is arranged in the anti-needle cap body, and the needle head is passed through the axial through hole. The hourglass-shaped anti-needle cap body makes the protection effect better.

In the above-mentioned anti-needle syringe, the width of the support slider is greater than the width of the connecting rod, the slide rail is a grooved slide rail, the connecting rod is located in the slide rail and the width of the support slider is the same as that of the connecting rod. The inside width of the slide rail is suitable. The two ends of the supporting slider are made to abut against the slide rail, and the lower end of the connecting rod will not break away from the slide rail.

Compared with the existing technology, the advantages of this anti-acupuncture syringe are: the design is simple and reasonable, and the operation is convenient. When the anti-acupuncture cap is located on the top of the needle, it can effectively prevent the needle from being exposed, realize the anti-acupuncture effect, and avoid misuse. Cause needle stick injury, high safety, low cost, good protection effect.

Description of drawings

Fig. 1 is a schematic view of the structure of the anti-acupuncture cap of the present invention when the anti-acupuncture cap is located at the top of the needle.

Fig. 2 is a structural schematic view of the anti-acupuncture cap of the present invention when the anti-needle cap is located at the bottom of the needle.

Fig. 3 is a partial schematic diagram provided by the utility model.

In the figure, a syringe 1, a needle head 2, a piston rod 3, an anti-acupuncture cap body 4, a connecting rod 5, a slide rail 6, a positioning mechanism 7, a sealing plate 71, a positioning hole 711, a positioning block 72, a control structure 8, a support Slider 81, pressing end 82.

Detailed ways

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

As shown in Figure 1-3, the anti-acupuncture syringe includes a syringe 1, a needle 2 is arranged at the end of the syringe 1, a piston and a piston rod 3 connected to the piston are arranged in the syringe 1, and a needle 2 is arranged on the needle 2. An anti-acupuncture cap body 4 that can move axially along the needle head 2 is sheathed. A connecting rod 5 is connected to the anti-acupuncture cap body 4. The connecting rod 5 is arranged on the needle cylinder 1 and along the axial direction of the needle cylinder 1. The extended sliding rail 6 is slidingly connected, and a positioning mechanism 7 that can realize the axial positioning of the connecting rod 5 when the anti-needle cap body 4 is placed on the top of the needle 2 is provided between the connecting rod 5 and the sliding rail 6. 5. Control the position of the anti-acupuncture cap 4 on the needle 2. When the anti-acupuncture cap 4 is placed on the top of the needle 2, the anti-acupuncture cap 4 is fixed on the top of the needle 2 by the positioning mechanism 7, so that the top of the needle 2 is The anti-acupuncture cap body 4 is wrapped to avoid being accidentally stabbed by the needle 2 during use.

As a preferred solution, the positioning mechanism 7 in this embodiment includes a sealing plate 71 arranged on the upper end of the slide rail 6 and a positioning block 72 arranged on the connecting rod 5. The sealing plate 71 is provided with a positioning hole 711 and is used to prevent needles. When the puncture cap body 4 is set on the top of the needle head 2, the positioning block 72 can pass through the positioning hole 711, and the sealing plate 71 makes the connecting rod 5 difficult to break away from the slide rail 6. When the positioning block 72 is located in the positioning hole 711, it can avoid needle-proof The spiky cap body 4 retreats and falls off. The connecting rod 5 is provided with a control structure 8 capable of disengaging the positioning block 72 from the positioning hole 711 , that is, the control structure 8 can separate the positioning block 72 from the positioning hole 711 . The control structure 8 includes a support slider 81 arranged on the connecting rod 5 and in contact with the slide rail 6 and a pressing end 82 arranged at the lower end of the connecting rod 5. The supporting slider 81 is located above the positioning block 72, and the pressing end 82 is located on the positioning block. 72, the pressing end 82 tilts outward and when the pressing end 82 is pressed down, the connecting rod 5 can deform with the support slider 81 as the fulcrum so that the positioning block 72 is separated from the positioning hole 711, that is, when the pressing end, 82 At this time, the connecting rod 5 deforms with the supporting slider 81 as the fulcrum, so that the positioning block 72 breaks away from the positioning hole 711, and the connecting rod 5 continues to slide so that the anti-acupuncture cap body 4 breaks away from the top of the needle head 2 .

In order to push the positioning block 72 into the positioning hole 711, and the positioning block 72 is not easy to disengage after entering the positioning hole 711, the positioning block 72 is wedge-shaped, and the end of the positioning block 72 away from the needle 2 is higher than the end close to the needle 2. The positioning block 72 is made of hard material or elastic material. The connecting rod 5 is made of strips of equal thickness and is in a bent shape. The bending shape of the connecting rod 5 is such that when the anti-needle cap 4 is located at the bottom of the needle 2, the connecting rod 5 conforms to the shape of the syringe 1, so that the connecting rod 5 conforms to the shape of the syringe 1. The rod 5 conforms to the curvature of the needle 2 without any inconvenience to the medical staff. The connecting rod 5, the pressing end 82, the support slider 81 and the positioning block 72 are connected as one and formed by plastic at one time; the sealing plate 71, the slide rail 6 and the syringe 1 are connected as one and formed by plastic at one time; the anti-acupuncture cap Body 4 is made of rubber. The one-piece structure makes the structure stronger and lower in cost. In order to improve the protective effect, the anti-acupuncture cap body 4 is hourglass-shaped, and an axial through hole is arranged in the anti-acupuncture cap body 4, and the needle head 2 is penetrated in the axial through hole. The width of the supporting slider 81 is greater than the width of the connecting rod 5, the sliding rail 6 is a grooved sliding rail, the connecting rod 5 is located in the sliding rail 6 and the width of the supporting sliding block 81 is adapted to the inner width of the sliding rail 6, so that the supporting slider The two ends of 81 lean against the slide rail 6, and the lower end of the connecting rod 5 will not break away from the slide rail 6.

The principle of this embodiment is: push the connecting rod 5 by pressing the end 82 so that the anti-acupuncture cap 4 reaches the top of the needle 2, and the positioning block 72 is forced into the positioning hole 711, so that the anti-acupuncture cap 4 is fixed on the top of the needle 2, Thereby achieve anti-acupuncture effect; by pressing the end 82, the positioning block 72 is separated from the positioning hole 711, and by pressing the end 82 to slide the connecting rod 5, the anti-acupuncture cap 4 is reset to the bottom of the needle 2, thereby releasing the protection.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this article uses more syringes 1, needles 2, piston rods 3, anti-acupuncture caps 4, connecting rods 5, slide rails 6, positioning mechanisms 7, sealing plates 71, positioning holes 711, positioning blocks 72, control Structure 8, support slider 81, pressing end 82 and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (10)

1. An anti-acupuncture syringe, comprising a syringe (1), a needle (2) is provided at the end of the syringe (1), a piston and a piston connected to the piston are arranged in the syringe (1) Rod (3), characterized in that the needle (2) is covered with an anti-needle cap (4) capable of moving axially along the needle (2), and the anti-needle cap (4) ) is connected with a connecting rod (5), and the connecting rod (5) is slidingly connected with the slide rail (6) arranged on the needle cylinder (1) and extending axially along the needle cylinder (1). A positioning mechanism (7) that can realize the axial positioning of the connecting rod (5) when the anti-acupuncture cap (4) is placed on the top of the needle (2) is provided between (5) and the slide rail (6). 2. The anti-needle syringe according to claim 1, characterized in that, the positioning mechanism (7) includes a sealing plate (71) arranged on the upper end of the slide rail (6) and a sealing plate (71) arranged on the connecting rod (5). The positioning block (72), the sealing plate (71) is provided with a positioning hole (711) and when the anti-needle cap (4) is placed on the top of the needle (2), the positioning block (72) can set in the positioning hole (711). 3. The anti-needle syringe according to claim 2, characterized in that, the connecting rod (5) is provided with a control structure (8) that enables the positioning block (72) to disengage from the positioning hole (711). ). 4. The anti-needle syringe according to claim 3, characterized in that, the control structure (8) includes a support slider (81) arranged on the connecting rod (5) and in contact with the slide rail (6) and the pressing end (82) located at the lower end of the connecting rod (5), the support slider (81) is located above the positioning block (72), and the pressing end (82) is located below the positioning block (72) , the pressing end (82) is tilted outward and when the pressing end (82) is pressed down, the connecting rod (5) can deform with the supporting slider (81) as the fulcrum so that the positioning block (72 ) out of the positioning hole (711). 5. The anti-needle syringe according to claim 2, 3 or 4, characterized in that, the positioning block (72) is wedge-shaped, and the end of the positioning block (72) away from the needle (2) is higher than that close to the needle (2) at one end. 6. The anti-needle syringe according to claim 2, 3 or 4, characterized in that, the positioning block (72) is made of hard material or elastic material. 7. The anti-needle syringe according to claim 2, 3 or 4, characterized in that, the connecting rod (5) is made of strips of equal thickness and is bent, and the connecting rod (5) The bending shape of the connecting rod (5) conforms to the shape of the syringe (1) when the anti-needle cap body (4) is located at the bottom of the needle (2). 8. The anti-needle syringe according to claim 4, characterized in that, the connecting rod (5), the pressing end (82), the supporting slider (81) and the positioning block (72) are connected as a whole and consist of The plastic is molded at one time; the sealing plate (71), the slide rail (6) and the needle cylinder (1) are connected in one piece and formed by plastic at one time; the needle-proof cap (4) is made of rubber. 9. The anti-acupuncture syringe according to claim 8, characterized in that, the anti-acupuncture cap (4) is hourglass-shaped, and an axial through hole is arranged in the anti-acupuncture cap (4), The needle (2) is passed through the axial through hole. 10. The anti-needle syringe according to claim 4, characterized in that, the width of the support slider (81) is greater than the width of the connecting rod (5), and the slide rail (6) is a grooved slide rail, the connecting rod (5) is located in the slide rail (6) and the width of the supporting slider (81) is adapted to the inner width of the slide rail (6).

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