CN108042880A - A kind of safe type retention needle - Google Patents

Abstract

This case discloses a safety-type indwelling needle, which includes: an indwelling needle main body, in which a puncture needle is arranged and an indwelling needle sleeve sleeved outside the side-puncture needle; a telescopic sleeve, which is connected to the indwelling needle main body It is detachably connected to control the puncture needle not to be in contact with the outside when it is pulled out. The telescopic sleeve includes a plurality of stretching rods whose diameters increase sequentially from the inside to the outside. A through groove is provided on the same section; a handle is connected to the telescopic sleeve, and the handle is selectively placed inside or outside the telescopic sleeve through the through groove; wherein, the through The side needle passes through the telescopic sleeve and is fixedly connected with a needle seat, and the needle seat is connected with the stretching rod placed on the outermost side. The indwelling needle in this case is convenient to use and ensures the safety of medical personnel during use.

Description

A safety indwelling needle

technical field

This case involves the field of medical devices, especially a safety indwelling needle.

Background technique

Venous indwelling needle is a commonly used medical device in nursing work. It is easy to use and reduces the number of punctures for patients, thereby reducing repeated punctures during clinical infusion, reducing the patient's puncture pain and the workload of clinical nurses. It has been widely used in clinical practice today.

In the existing indwelling needles, the puncture needle and the indwelling needle cannula are first inserted into the patient's injection site, then the indwelling needle cannula is guided into the patient's blood vessel through the guidance of the puncture needle, and finally the puncture needle is pulled out, which is the indwelling needle sheath The tube is left in the patient's blood vessel and fixed with an applicator film. When in use, an infusion tube is injected into the indwelling needle for infusion.

The general disadvantages of existing indwelling needles are: 1), in the process of pulling out the puncture needle, because the puncture needle is exposed, it is very easy to pierce the skin of the medical staff, causing the risk of infection; 2), the indwelling needle is always fixed On the human body, during the bathing process of the patient, a towel is usually used to wrap it to prevent water from entering the indwelling needle, but the towel is easy to fall off and cannot achieve a good waterproof effect.

Contents of the invention

Aiming at the deficiencies in the prior art, the object of the present invention is to provide a safety indwelling needle, in which a telescopic sleeve is detachably arranged on the main body of the indwelling needle, and when the puncture needle is pulled out, the telescopic sleeve stretches , isolate the puncture needle from the outside world, avoiding stabbing medical staff, and the indwelling needle is equipped with a waterproof membrane, which is convenient for patients to use the indwelling needle safely in the process of washing.

In order to achieve these objects and other advantages according to the present invention, a safety type indwelling needle is provided, comprising:

The main body of the indwelling needle, which is provided with a puncture needle and an indwelling needle sleeve sleeved on the outside of the side-puncture needle;

A telescopic sleeve, which is detachably connected to the main body of the indwelling needle, is used to control the puncture needle from contacting the outside when it is pulled out. Stretching rods, the same section of the plurality of stretching rods is respectively provided with a through groove;

a handle, which is movably arranged at the side end of the telescopic sleeve, and the handle is selectively placed inside or outside the telescopic sleeve through the slot;

Wherein, the puncture needle passes through the telescopic sleeve and is fixedly connected with a needle holder, and the needle holder is connected with the outermost stretching rod.

Preferably, an indwelling needle sheath is movably sleeved on the indwelling needle main body.

Preferably, the indwelling needle body is provided with a sealing plug for isolating outside air.

Preferably, the stretch rod placed on the innermost side of the telescopic sleeve is clamped or screwed to the main body of the indwelling needle.

Preferably, the stretched length of the telescopic sleeve is greater than the length of the puncture needle.

Preferably, the main body of the indwelling needle is connected with an infusion tee through a PVC hose.

Preferably, a fixed rod is movably hung on the PVC hose, and a plurality of waterproof membranes are wound on the fixed rod.

Preferably, pre-cuts are provided between the plurality of waterproof membranes, so as to facilitate the separation of the two waterproof membranes.

Preferably, the waterproof membrane is folded, and one side of the waterproof membrane is provided with double-sided adhesive tape.

The beneficial effects of the present invention are: 1), the main body of the indwelling needle is detachably provided with a telescopic sleeve, and when the puncture needle is pulled out, the telescopic sleeve is stretched to isolate the puncture needle from the outside world and avoid stabbing medical staff ; 2) There is a through groove on the telescopic sleeve. When the indwelling needle is not in use, the handle passes through the through groove and is placed in the telescopic sleeve. The telescopic sleeve cannot be stretched, which prevents the puncture needle from being pulled out when it is not in use. 3), the indwelling needle is equipped with a waterproof membrane, which is convenient for the patient to use the indwelling needle safely during the washing process.

Description of drawings

Fig. 1 is the structure diagram when the indwelling needle of this case is not used;

Fig. 2 is a structural schematic diagram of the indwelling needle of this case when in use.

Fig. 3 is a structural schematic diagram of the indwelling needle in this case when the puncture needle is pulled out.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, and the aforementioned and other objects, features, aspects and advantages of the present invention will become more apparent, so that those skilled in the art can implement them with reference to the description. In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like parts. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are generally not intended to require a specific orientation. Terms referring to attachment, coupling, etc. (e.g., "connected" and "attached") refer to a fixed or attached relationship, as well as a movable or rigid attachment or relationship, of structures to one another, directly or indirectly through intermediate structures, unless otherwise stated in The other way is clearly stated.

As shown in Figure 1-3, the safety type indwelling needle includes:

The indwelling needle body 10 is provided with a puncture needle 101 and an indwelling needle sleeve 102 sleeved on the outside of the penetrating needle 101;

The telescopic sleeve 40 is detachably connected with the indwelling needle main body 10, and is used to control the puncture needle 101 not to contact the outside world when it is pulled out. The telescopic sleeve 40 includes a plurality of stretching rods whose diameters gradually increase from the inside to the outside 401, a plurality of stretch rods 401 are provided with a through groove on the same section;

The handle 50 is movably arranged at the side end of the telescopic sleeve 40, and the handle 50 is selectively placed inside or outside the telescopic sleeve 40 through the slot. When the indwelling needle is not used, the handle 50 passes through the slot Placed in the telescopic sleeve 40, avoiding the stretching of the telescopic sleeve 40 under the action of external force and pulling out the puncture needle 101; when using the indwelling needle, pull the handle 50 out of the telescopic sleeve 40, The puncture needle 101 can be freely expanded and contracted under the action of external force, and the handle 50 is convenient for the medical staff to apply force to puncture the puncture needle 101 into the blood vessel of the human body.

Wherein, the puncture needle 101 passes through the telescopic sleeve 40 and is fixedly connected with a needle holder 30, and the needle holder 30 is connected with the stretch rod placed on the outermost side. , and in the process of pulling out the puncture needle 101, the needle hub 30 drives the telescopic sleeve 40 to stretch.

Wherein, an indwelling needle sheath 20 is movably sleeved on the indwelling needle main body 10 to prevent the indwelling needle puncture needle 101 from being damaged or punctured when the indwelling needle is not used.

Wherein, the indwelling needle main body 10 is provided with a sealing plug 103 for isolating outside air.

Wherein, the innermost stretching rod placed on the telescopic sleeve 40 is clamped or screwed to the indwelling needle body 10 , and when the puncture needle 101 is completely pulled out, the innermost stretching rod is separated from the indwelling needle body 10 .

Wherein, the stretched length of the telescopic sleeve 40 is greater than the length of the puncture needle 101, so that when the puncture needle 101 is pulled out, the puncture needle 101 is always placed in the telescopic sleeve 40 without contacting the outside.

Wherein, the indwelling needle main body 10 is connected with an infusion three-way tube 70 through a PVC hose 60 .

Wherein, a fixed rod 80 is movably hung on the PVC hose 60 , and a plurality of waterproof membranes 801 are wound on the fixed rod 80 .

Wherein, pre-cuts are provided between the plurality of waterproof membranes 801 to facilitate the separation of the two waterproof membranes 801 .

Wherein, the waterproof membrane 801 is folded, and one side of the waterproof membrane 801 is provided with double-sided tape. During the patient's washing process, a waterproof membrane 801 is torn off, and the indwelling needle is wrapped with the waterproof membrane 801, so as to prevent water from entering the patient. The indwelling needle ensures safe use.

The indwelling needle of the present invention is detachably provided with a telescopic sleeve on the main body of the indwelling needle. When the puncture needle is pulled out, the telescopic sleeve is stretched to isolate the puncture needle from the outside world and avoid stabbing medical personnel; the telescopic sleeve There is a through groove on the top, when the indwelling needle is not in use, the handle passes through the through groove and is placed in the telescopic sleeve, and the telescopic sleeve cannot be stretched, which avoids the puncture needle being pulled out when it is not in use; the indwelling needle is equipped with There is a waterproof membrane, which is convenient for patients to use the indwelling needle safely during the washing process.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details without departing from the general concept defined by the claims and their equivalents.

Claims (9)

1. a kind of safe type retention needle, which is characterized in that including：

Remaining needle main body be arranged inside puncture needle and is set in the remaining needle casing worn on the outside of the pin of side；

Telescopic sleeve is detachably connected with the remaining needle main body, to control the puncture needle when extracted not with the external world Contact, the telescopic sleeve include the stretch rod that multiple diameters are sequentially increased from the inside to the outside, the multiple stretch rod it is same A straight slot is offered on section respectively；

Lever, is movably set in the side of the telescopic sleeve, and the lever is optionally disposed in described through the straight slot Inside or outside telescopic sleeve；

Wherein, the puncture needle is fixedly linked through the telescopic sleeve with a needle stand, and the needle stand is with being placed in outermost institute Stretch rod is stated to be connected.

2. safe type retention needle as described in claim 1, which is characterized in that movable sleeve is connected to one and stays in the remaining needle main body Put needle shield.

3. safe type retention needle as described in claim 1, which is characterized in that be provided with to completely cut off in the remaining needle main body The sealing-plug of outside air.

4. safe type retention needle as described in claim 1, which is characterized in that be placed in the innermost drawing of the telescopic sleeve Boom is clamped or is threadedly coupled with the remaining needle main body.

5. safe type retention needle as described in claim 1, which is characterized in that the length under the telescopic sleeve tensional state is big In the length of the puncture needle.

6. safe type retention needle as described in claim 1, which is characterized in that the remaining needle main body by a PVC hose with One infusion tee pipe is connected.

7. safe type retention needle as described in claim 1, which is characterized in that activity is linked with a fixation in the PVC hose Bar is wound with multiple waterproof membranes in the fixed link.

8. safe type retention needle as claimed in claim 7, which is characterized in that be provided with pre-cut between the multiple waterproof membrane Mouthful, in order to two waterproof UF membranes.

9. safe type retention needle as claimed in claim 8, which is characterized in that the waterproof membrane is in rugosity, and the waterproof One side on film is provided with double faced adhesive tape.