CN217548697U - A safety indwelling needle - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, and discloses a safety type indwelling needle, comprising an indwelling needle tube and a needle seat detachably fixed on the right end of the indwelling needle tube, the inner wall of the needle seat is fixedly connected with a puncture needle, and the inner wall of the indwelling needle tube is A protective cover is provided, the top and bottom of the outer wall of the protective cover are provided with a first groove, the top and bottom of the inner wall of the indwelling needle tube are provided with a second groove, and the inside of the second groove is provided with a spring. The utility model moves the needle seat to the right after inserting the drug delivery hose into the patient's vein, the needle seat drives the puncture needle to move to the right, the puncture needle drives the bump to pass through the isolation plug, and the bump enters the protection from the left end of the protective sleeve. When the right outer wall of the bump is in contact with the right side of the inner wall of the protective cover, the bump will drive the protective cover to move to the right. When the puncture needle is withdrawn, the needle of the puncture needle is inside the protective cover, thus protecting the medical staff from will stab.

Description

A safety indwelling needle

technical field

The utility model relates to the technical field of medical equipment, in particular to a safety type indwelling needle.

Background technique

The venous indwelling needle is a medical device connected to a high-pressure syringe for intravenous indwelling infusion. It is mainly used in clinical venipuncture to administer medicine and provide nutrition to the sick body. Conducive to reducing the operation intensity of nurses. The structure of the existing indwelling needle is that glue is coated on the outer periphery of the isolation plug and pressed into the casing seat, and the friction force is increased through the adhesive force and the interference fit between the isolation plug and the casing seat to form a sealed connection structure. , to prevent the leakage of the liquid in the cannula seat, so as to ensure the safety and reliability of the indwelling needle during infusion. However, the traditional indwelling needle needs to be withdrawn from the steel needle after the puncture is completed, and the needle tip of the steel needle is completely exposed, and the medical staff is easily stabbed by accident. If the patient is a patient with hepatitis B or AIDS, the medical staff will be infected with hepatitis B or AIDS, which will bring serious bodily harm and threaten their life safety.

Utility model content

The purpose of the present invention is to provide a safety type indwelling needle to solve the problems mentioned in the above background.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a safety type indwelling needle, comprising an indwelling needle tube and a needle seat detachably fixed on the right end of the indwelling needle tube, the inner wall of the needle seat is fixedly connected with a puncture needle, and the indwelling needle is The inside of the needle tube is provided with a protective cover, the top and bottom of the outer wall of the protective cover are provided with a first groove, the top and bottom of the inner wall of the indwelling needle tube are provided with a second groove, and the inside of the second groove is provided with A spring, one end of the spring is fixedly connected with the end of the inner wall of the second groove away from the opening, the other end of the spring is fixedly connected with a fixing block, and the fixing block is movably connected with the first groove and the second groove.

Preferably, the diameter of the first groove and the second groove are the same, and the openings are opposite to each other. The first groove and the second groove are arranged to cooperate with the fixing block to fix the protective cover, and the arc-shaped arrangement of one end of the fixing block away from the spring is to facilitate the removal of the protective cover.

Preferably, the outer wall of the protective sleeve is slidably connected to the inner wall of the indwelling needle tube, and the drug delivery hose is fixedly connected to the left end of the indwelling needle tube. The protective sleeve is provided to avoid the needle tip of the puncture needle when the puncture needle exits the indwelling needle tube. Nudity causes medical staff to be accidentally stabbed, so as to achieve the purpose of protecting medical staff.

Preferably, an isolation plug is fixedly connected to the inner wall of the indwelling needle tube, and the isolation plug is located on the left side of the protective sleeve. The puncture needle penetrates the protective sleeve and the isolation plug and is movably connected to the protective sleeve and the isolation plug. It is made of elastic material, such as sponge, latex or rubber, so that when the puncture needle is pulled out and retreats, the isolation plug can automatically close the through hole passed by the puncture needle and the bump due to its own elasticity, thereby Avoid liquid leakage.

Preferably, the puncture needle is movably connected with the indwelling needle tube and the drug delivery hose, and the top and bottom of the outer wall of the puncture needle are fixedly connected with bumps, and the bumps are provided so that the protective cover can be taken out when the puncture needle is pulled out. , so that the needle of the puncture needle remains inside the protective sheath, so as to prevent the puncture needle from stabbing the medical staff.

Preferably, a handle portion is fixedly connected to the outer wall of the needle seat, and a liquid inlet is communicated with the bottom of the indwelling needle tube.

The utility model provides a safety type indwelling needle. Has the following beneficial effects:

(1) The utility model moves the needle seat to the right after inserting the drug delivery hose into the patient's vein, the needle seat drives the puncture needle to move to the right, the puncture needle drives the bump to pass through the isolation plug, and the bump is removed from the protection The left end of the sleeve enters the protective sleeve. When the right outer wall of the bump contacts the right side of the inner wall of the protective sleeve, the bump will drive the protective sleeve to move to the right, so that the arc surface of the fixed block is squeezed, and the fixed block enters the second. the inside of the groove, so that the protective cover is released from the restriction and the puncture needle is withdrawn from the indwelling needle tube together. When the needle is withdrawn, the needle of the puncture needle is inside the protective cover, so as to protect the medical staff from being stabbed.

(2), the utility model is made of elastic material by setting the isolation plug, such as sponge, latex or rubber, so that when the puncture needle is pulled out and retreats, the isolation plug can be punctured due to its own elasticity The through-holes through which the needles and the bumps pass are automatically closed, thus avoiding the leakage of the liquid medicine.

Description of drawings

Fig. 1 is the front sectional view of the utility model;

Fig. 2 is the drawing out of the puncture needle of the utility model;

FIG. 3 is an enlarged view of the utility model A. FIG.

In the figure: 1. Indwelling needle tube; 2. Needle seat; 3. Puncture needle; 4. Hand-held part; 5. Drug delivery hose; 6. Bump; 7. Liquid inlet; ; 10, the second groove; 11, the spring; 12, the fixed block; 13, the first groove.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1-3, the present utility model provides a technical solution: a safety type indwelling needle, comprising an indwelling needle tube 1 and a needle seat 2 detachably fixed on the right end of the indwelling needle tube 1, the outer wall of the needle seat 2 is fixedly connected with a The hand-held part 4, the bottom of the indwelling needle tube 1 is communicated with a liquid inlet 7, the hand-held part 4 is set to facilitate the insertion of the puncture needle 3, the liquid inlet 7 is set to facilitate the infusion, and the inner wall of the needle holder 2 is fixedly connected with a puncture needle 3. Needle 3, the inside of the indwelling needle tube 1 is provided with a protective sleeve 8, the outer wall of the protective sleeve 8 is slidably connected with the inner wall of the indwelling needle tube 1, and the left end of the indwelling needle tube 1 is fixedly connected with a drug delivery hose 5, by setting the protective sleeve 8 is for puncture When the needle 3 is withdrawn from the indwelling needle tube 1, the needle tip of the puncture needle 3 is not exposed and the medical staff is accidentally stabbed, so as to achieve the purpose of protecting the medical staff. , the top and bottom of the outer wall of the puncture needle 3 are fixedly connected with bumps 6. The purpose of setting the bumps 6 is to bring out the protective sleeve 8 when the puncture needle 3 is pulled out, so that the needle of the puncture needle 3 remains inside the protective sleeve 8. , so as to prevent the puncture needle 3 from stabbing the medical staff, the inner wall of the indwelling needle tube 1 is fixedly connected with an isolation plug 9, the isolation plug 9 is located on the left side of the protective sleeve 8, and the puncture needle 3 penetrates the protective sleeve 8 and the isolation plug 9 and the protective sleeve 8 and isolation The plug 9 is movably connected, and the isolation plug 9 is made of an elastic material, such as sponge, latex or rubber, so that when the puncture needle 3 is pulled out and retreats, the isolation plug 9 can be removed due to its own elasticity. The through hole through which the puncture needle 3 and the bump 6 pass through is automatically closed, thereby avoiding the leakage of the medicinal liquid. Slot 10, a spring 11 is arranged inside the second groove 10, one end of the spring 11 is fixedly connected with the end of the inner wall of the second groove 10 away from the opening, and the other end of the spring 11 is fixedly connected with a fixing block 12, and the fixing block 12 is connected with the first groove 10. A groove 13 and the second groove 10 are movably connected, the diameters of the first groove 13 and the second groove 10 are the same, and the openings are opposite to each other. One end is arranged inside the first groove 13, and the first groove 13 and the second groove 10 are arranged in order to cooperate with the fixing block 12 to fix the protective cover 8, and the fixing block 12 is arranged in an arc away from the spring to facilitate disassembly. protective case 8.

In use, after inserting the drug delivery hose 5 into the patient's vein, move the needle seat 2 to the right, the needle seat 2 drives the puncture needle 3 to move to the right, the puncture needle 3 drives the bump 6 to pass through the isolation plug 9, and the convex The block 6 enters the protective cover 8 from the left end of the protective cover 8. When the right outer wall of the convex block 6 contacts the right side of the inner wall of the protective cover 8, the convex block 6 will drive the protective cover 8 to move to the right, thereby making the fixed block 12 The arc surface is squeezed, and the fixing block 12 enters the inside of the second groove 10, so that the protective cover 8 is released from the restriction and the puncture needle 3 exits the indwelling needle tube 1 together. When withdrawing, the needle of the puncture needle 3 is inside the protective cover 8. Protect healthcare workers from stab wounds.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A safety type indwelling needle, comprising an indwelling needle tube (1) and a needle seat (2) detachably fixed on the right end of the indwelling needle tube (1), characterized in that: the inner wall of the needle seat (2) is fixedly connected with a puncture needle. Needle (3), the inside of the indwelling needle tube (1) is provided with a protective sleeve (8), the top and bottom of the outer wall of the protective sleeve (8) are provided with first grooves (13), the indwelling needle tube (1) ) is provided with a second groove (10) at the top and bottom of the inner wall, a spring (11) is arranged inside the second groove (10), and one end of the spring (11) is connected to the second groove (10) One end of the inner wall away from the opening is fixedly connected, and the other end of the spring (11) is fixedly connected with a fixing block (12), and the fixing block (12) is movable with the first groove (13) and the second groove (10) connect. 2. A safety type indwelling needle according to claim 1, characterized in that: the diameters of the first groove (13) and the second groove (10) are the same, and the openings are opposite, and the fixing block ( 12) One end away from the spring (11) is arc-shaped, and the arc-shaped end of the fixing block (12) is disposed inside the first groove (13). 3. A safety type indwelling needle according to claim 1, characterized in that: the outer wall of the protective sleeve (8) is slidably connected to the inner wall of the indwelling needle tube (1), and the left end of the indwelling needle tube (1) is fixed A drug delivery hose (5) is connected. 4. A safety type indwelling needle according to claim 1, characterized in that: an isolation plug (9) is fixedly connected to the inner wall of the indwelling needle tube (1), and the isolation plug (9) is located in the protective sleeve (8). ), the puncture needle (3) penetrates the protective sleeve (8) and the isolation plug (9) and is movably connected to the protective sleeve (8) and the isolation plug (9). 5. A safety type indwelling needle according to claim 1, characterized in that: the puncture needle (3) is movably connected with the indwelling needle tube (1) and the drug delivery hose (5), and the puncture needle (3) The top and bottom of the outer wall of ) are fixedly connected with bumps (6). 6. A safety type indwelling needle according to claim 1, characterized in that: the outer wall of the needle seat (2) is fixedly connected with a hand-held portion (4), and the bottom of the indwelling needle tube (1) is communicated with a Liquid inlet (7).

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