CN209137600U - A kind of remaining needle effectively avoiding plugging - Google Patents

Abstract

The utility model discloses an indwelling needle which can effectively avoid tube blockage, comprising a puncture guide connecting tube (1), a Clifford joint (2), a needle cannula (3), a Clifford joint (2), a needle cannula (3) are respectively connected to the puncture guide connecting pipe (1), the tail end of the puncture guide connecting pipe (1) is provided with a conical transition section (11), and the top end of the needle cannula (3) is inserted into the conical transition section (11). The end is fixedly connected to it, and the male end (2.1) of the Clifford connector is connected to the needle cannula (3) through the puncture guide connecting tube (1). The utility model combines the biological structural features of the manta ray to effectively prolong the pipeline, increase the indwelling life and reduce the probability of blocking the pipeline. The tail end of the puncture guide connecting tube is made into an inclined slope to reduce the gradient at the connection with the needle cannula, and the design of the PVC extension tube is removed, which effectively avoids the problem of tube blockage caused by the blood return of the needle cannula.

Description

An indwelling needle that can effectively avoid clogging

technical field

The utility model relates to the technical field of medical devices, in particular to an indwelling needle that can effectively avoid tube blockage.

Background technique

Superficial vein indwelling needle can effectively reduce the vascular injury and mental pain caused by repeated puncture in patients, and can provide multiple treatment channels for patients, reduce the burden of venipuncture work of nursing staff, and reduce the incidence of occupational exposure of nursing staff. The venous indwelling needle has been well known and accepted by the vast majority of patients, and its clinical use is increasing.

The indwelling needles in the prior art have the following disadvantages:

(1) The connection between the needle cannula and the puncture guide connecting tube is easy to bend, resulting in poor dripping or blockage of the pipeline;

(2) The blood return of the extension tube causes the tube to be blocked;

(3) The fixation structure is too simple, and the indwelling needle cannot be firmly fixed;

(4) The Clifford joint and the infusion set or syringe joint are prone to slip and become contaminated.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide an indwelling needle with a long indwelling time that can effectively avoid pipe blocking. Combined with the biological structural characteristics of manta rays, it can effectively extend the pipe, increase the indwelling life, and reduce the probability of blocking the pipe. .

The purpose of the present utility model is achieved through the following technical solutions: an indwelling needle that can effectively avoid tube blockage, comprising a puncture guide connecting tube, a Clifford joint, and a needle cannula. The Clifford joint and the needle cannula are respectively connected to the puncture Guide connecting pipe, the tail end of the puncture guide connecting pipe is provided with a conical transition section, the top end of the needle cannula is inserted into the end of the conical transition section and is fixedly connected with it, and the male end of the cleaver connector is connected through the puncture guide The tube is connected with the needle cannula; it also includes a negative pressure blood sampler, and the negative pressure blood sampler is threadedly connected to the female end of the Clifford connector.

An inclined angle is set between the needle cannula and the skin contact surface of the puncture guide connecting tube, the needle cannula is inclined toward the human body contact direction, and the inclined angle is 10°.

Said indwelling needle for effectively avoiding tube blockage further comprises a tube foot, which is arranged on the outer edge of the Clifford joint and obliquely surrounds the inner female end of the Clifford joint.

The indwelling needle that can effectively avoid tube blockage further includes fixed wings, and the fixed wings are arranged on both sides of the Clifford joint.

The fixed wing is a triangular fixed wing, and the triangular fixed wings on both sides of the Clifford joint, the Clifford joint and the puncture guide connecting pipe form a triangular structure.

The tube foot and the fixed wing are integrally formed.

The indwelling needle for effectively avoiding tube blockage further comprises a heparin cap, the heparin cap is provided on the Clifford joint through the heparin sealing tube and communicated with the Clifford joint.

The indwelling needle that can effectively avoid tube blockage further comprises an infusion three-way tube, and the infusion three-way tube is arranged between the puncture guide connecting tube and the Clifford joint.

The indwelling needle is a polyurethane indwelling needle.

The beneficial effects of the present utility model are:

1) The utility model combines the biological structural characteristics of manta rays, effectively prolonging the pipeline, increasing the indwelling life, and reducing the probability of blocking the pipeline.

2) The tail end of the puncture guide connecting tube is provided with a conical transition section, and the conical transition section is made into an inclined slope to reduce the gradient at the connection with the needle cannula, effectively avoiding the blockage caused by the bending of the needle cannula. The tube problem occurs. The PVC extension tube in the prior art is relatively long, which is easy to cause blood coagulation, leading to blockage and blood return, and the patient is easy to pull the long extension tube, so the tube needs to be firmly fixed in multiple directions. If the tube is blocked or disconnected due to firmness, the male end of the Clifford connector is connected to the needle cannula through the puncture guide connecting tube, and the design of the PVC extension tube is removed, which effectively avoids the tube blocking caused by the blood return of the needle cannula, making the indwelling The needle is more miniaturized, which is convenient for carrying, and saves the worry of unstable fixation.

3) When medical staff perform infusion or intravenous injection of drugs, the Clifford connector is prone to slippage with the infusion set or syringe connector, which sometimes causes the negative end of the Clifford connector to touch the hands of the medical staff and cause the Clifford connector. If the female end of the connector is contaminated, set the tube foot on the outer edge of the Clifford connector and obliquely surround the female end of the inner Kraft connector, so that the hand of the medical staff touches the tube foot during the slipping process, which is effective. It avoids the pollution caused by the hand directly touching the female end of the Clifford connector, and the tube foot can also play the role of dustproof and supporting the nipple of the infusion set.

4) There is an inclined angle between the needle cannula and the skin contact surface of the puncture guide connecting tube. The needle cannula is inclined to the human body contact direction, and the inclined angle is 10°, so that the needle core can better stick to the skin. It can reduce the operational burden of medical staff.

5) The fixed wing is a triangular fixed wing. The triangular fixed wings on both sides of the Clifford joint form a triangular structure with the Clifford joint and the puncture guide connecting tube. The triangle has good stability, so that the indwelling needle can be stably connected to the skin. The fit is beneficial to the fixation of the indwelling needle, and it cooperates with the inclined connecting surface of the puncture guide connecting tube and the needle cannula to make the indwelling needle indwelling time longer.

6) The negative pressure blood sampler is threadedly connected to the female end of the Clifford connector. After the needle wing is retracted, the negative pressure blood sampler sucks out the air in the Clifford connector and the indwelling needle. Under the action of the negative pressure blood sampler, the blood passes through The needle cannula is naturally filled into the entire indwelling needle. After the negative pressure blood collection device is removed, the nipple of the infusion set can be inserted into the negative end of the Clifford connector, so that the medicine directly enters the blood vessel through the needle cannula, avoiding the There is air remaining in the indwelling needle, which causes the problem of slow infusion rate.

Description of drawings

Fig. 1 is the plane structure schematic diagram of the present utility model;

Fig. 2 is the structural schematic diagram when the needle wing is drawn out;

Fig. 3 is the structural representation when twisting out the negative pressure blood collection device;

Fig. 4 is the side structure schematic diagram of the utility model;

In the figure, 1- puncture guide connecting tube, 2- Clifford joint, 2.1- Male end of Clifford joint, 2.2- Female end of Clifford joint, 3- Needle cannula, 4- Tube foot, 5- Fixed wing , 6- Heparin cap, 7- Infusion tee, 8- Negative pressure blood collection device, 9- Needle wing, 10- Needle core, 11- Conical transition section.

Detailed ways

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

Referring to Figures 1-4, the present invention provides a technical solution: an indwelling needle that can effectively avoid blockage. During use, the needle cannula 3 and the needle core 10 need to be punctured into the blood vessel together. When the needle cannula 3 After all enter the blood vessel, withdraw the needle core 10, and only place the soft needle cannula 3 in the blood vessel for infusion therapy. The indwelling needle is a polyurethane indwelling needle, that is, the indwelling needle is made of Good thermoplasticity, in warm blood, the polyurethane catheter will soften, thereby reducing the risk of mechanical thrombophlebitis, and indwelling in the blood vessel for 3-5 days, it has better bending resistance, which can avoid needle cannula 3Clogging due to bending.

An indwelling needle that can effectively avoid tube blockage, comprising a puncture guide connecting tube 1, a Clifford joint 2, and a needle cannula 3. The Clifford joint 2 and the needle cannula 3 are respectively connected to the puncture guide connecting tube 1, and the puncture guide The tail end of the connecting tube 1 is provided with a conical transition section 11, and the top of the needle cannula 3 is inserted into the end of the conical transition section 11 and fixedly connected with it. The angle between the needle and the skin continues to be inserted to ensure that the needle cannula 3 is placed in the blood vessel. During the process of lowering the angle, force will be exerted on the puncture guide connecting tube 1 and the force will be transferred to the needle cannula 3. The angle of the junction between the needle cannula 3 and the puncture guide connecting tube 1 is not suitable, which will easily lead to bending of the junction, which will lead to poor dripping or blockage of the pipeline. The small gradient at the joint with the needle cannula 3 effectively avoids the problem of tube blockage caused by the bending of the needle cannula 3 .

Preferably, an inclined angle is set between the needle cannula 3 and the skin contact surface of the puncture guide connecting tube 1, the needle cannula 3 is inclined toward the human body contact direction, and the inclined angle is 10°, then the needle core 10 It can better fit the skin and reduce the operational burden of medical staff.

The Clifford joint 2 can prevent blood from returning, thereby reducing the incidence of blocked tubes, thereby prolonging the use time of the indwelling needle, reducing the pain of the patient, and reducing the workload of clinical infusions of medical staff. The Flex Connector 2 is a needle-free sealed infusion connector. The silicon cap of the Clifford Connector 2 can ensure that the interior of the connector 2 is always in a sterile state, making it a closed and wipeable sterile infusion system, reducing the chance of patient infection. Furthermore, the PVC extension tube in the prior art is relatively long, which is likely to cause blood coagulation to block the tube and return blood, and the patient is easy to pull the long extension tube, so it is necessary to firmly fix the tube in multiple directions, which is prone to occur due to weak fixation. If the tube is blocked or disconnected, the male end 2.1 of the Clifford connector is connected to the needle cannula 3 through the puncture guide connecting tube 1, and the design of the PVC extension tube is removed, which effectively avoids the tube blocking caused by the blood return of the needle cannula 3. , which makes the indwelling needle more miniaturized, which is convenient for carrying, and saves the worry of unstable fixation.

The indwelling needle that can effectively avoid tube blockage also includes a negative pressure blood sampler 8, which is threadedly connected to the female end 2.2 of the Clifford connector. After the needle wing 9 is retracted, the negative pressure blood sampler 8 sucks In addition to the air in the Clifford connector 2 and the indwelling needle, the blood is naturally filled into the entire indwelling needle through the needle cannula 3 under the action of the negative pressure blood collection device 8. After the negative pressure blood collection device 8 is removed, the nipple of the infusion device is It can be inserted into the female end 2.2 of the Clifford connector, so that the medicine can directly enter the blood vessel through the needle cannula 3, avoiding the problem of slow infusion speed caused by residual air in the indwelling needle in the prior art.

The described indwelling needle for effectively avoiding blockage also includes a tube foot 4, which is arranged on the outer edge of the Clifford joint 2 and obliquely surrounds the inner female end 2.2 of the Clifford joint. When infusion or intravenous injection of drugs, the Clifford connector 2 and the infusion set or syringe connector are prone to slip, sometimes causing the female end of the Clifford connector 2.2 to touch the hands of the medical staff, resulting in the negative end of the Clifford connector 2.2. If it is polluted, the tube foot 4 is set on the outer edge of the Clifford joint 2 and inclined to surround the female end 2.2 of the inner Clifford joint, so that the hand of the medical staff touches the tube foot 4 during the slipping process, and It effectively avoids the pollution caused by the hand directly touching the female end 2.2 of the Clifford connector, and the tube foot 4 can also play the role of dustproof and supporting the nipple of the infusion set.

Described a kind of indwelling needle that effectively avoids blocking the tube also includes fixed wings 5, and the fixed wings 5 are arranged on both sides of the Clifford joint 2, and are used to fix the Clifford joint 2 and other devices connected to it together. On the human body, the fixed wing 5 can be designed with different patterns according to the patient's age, needs and preferences to increase the overall aesthetics. Preferably, the fixed wing 5 is a triangular fixed wing, and the triangular fixed wings on both sides of the rivet joint 2 5. It forms a triangular structure with the Clifford joint 2 and the puncture guide connecting tube 1. The triangle has good stability, so that the indwelling needle can be stably attached to the skin, which is conducive to the fixation of the indwelling needle, and cooperates with the puncture guide connecting tube 1. The inclined connection surface with the needle cannula 3 makes the indwelling needle indwelling time longer. Further, except for the fixed wing 5, the rest of the indwelling needle is transparent, which is convenient for medical staff to observe the blood flow in the tube and operate the back in time. A series of actions such as needle retraction wing 9.

Preferably, the tube foot 4 and the fixed wing 5 are integrally formed, which is convenient for processing, and the intermediate connecting piece is omitted, so that the fixing effect of the fixed wing 5 is more stable.

Described a kind of indwelling needle that can effectively avoid the blockage also comprises heparin cap 6, described heparin cap 6 is set on described Clifford joint 2 and communicates with Clifford joint 2 through heparin sealing tube, and heparin cap 6 imitates. The effect of the Clifford principle on the sealing of the venous indwelling needle to reduce the medical expenses of the patient and improve the work efficiency of the nurses. It is matched with the arteriovenous indwelling needle, which can be used for multiple and repeated puncture for infusion and drug injection. Standard locking joint , The injection of heparin sodium can prevent blood backflow and anti-coagulation. The heparin cap 6 can replace the Clifford joint 2 for infusion work when the Clifford joint 2 is damaged or other conditions that cannot be used, and can also achieve blood withdrawal. function.

The indwelling needle that can effectively avoid tube blockage also includes an infusion tee tube 7, which is arranged between the puncture guide connecting tube 1 and the Clifford joint 2, so that the entire indwelling needle can be completely closed. It is more convenient to use, effectively avoids liquid leakage and reduces pollution.

The utility model combines the biological structure of the manta ray and the biological structure of the human body, which can effectively prolong the pipeline, increase the indwelling life and reduce the probability of blocking the pipeline. Specifically, the manta ray has a triangular structure and has good stability; The wings are soft and smooth, which are mapped to the fixed wing 5 in the indwelling needle, which is convenient for fixing work; the gills of the abdomen are wide and large, and are mapped to the Clifford joint 2 in the indwelling needle, which is convenient to combine with the heparin cap 6 and work together; There are two fleshy feet on it, the fleshy feet are mapped to the tube foot 4 in the indwelling needle, the manta ray mouth is flat and wide, and the manta ray mouth is mapped to the female end 2.2 of the Clifford connector in the indwelling needle, and the tube foot 4 surrounds the internal Kelai To avoid contamination, the female end 2.2 of the fork connector can be connected to the nipple of the infusion set, so that the liquid can be freely circulated.

The use method of the utility model is as follows: firstly, according to the doctor's advice and treatment needs, select a suitable type of puncture needle, flush the tube for use; then select a suitable blood vessel and tie a tourniquet; secondly, insert the needle, and withdraw the needle wing 9 when blood is returned, wait for After the blood is filled to the entire indwelling needle, remove the negative pressure blood sampler 8; again, adjust the fixed wing 5 to fit the patient's skin, and fix the indwelling needle with a membrane; finally, stick the indwelling time and responsible person labels on the fixed wing 5 to complete the entire indwelling Needle for infusion work.

The above are only preferred embodiments of the present invention, and it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as an exclusion of other embodiments, but can be used in various other combinations, modifications and environments. , and can be modified within the scope of the concepts described herein, through the above teachings or skill or knowledge in the relevant field. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all fall within the protection scope of the appended claims of the present invention.

Claims (9)

1. An indwelling needle that can effectively avoid blockage, comprising a puncture guide connecting tube (1), a Clifford connector (2), a needle cannula (3), a Clifford connector (2), and a needle cannula (3) The puncture guide connecting pipes (1) are respectively connected, and it is characterized in that: the tail end of the puncturing guide connecting pipe (1) is provided with a conical transition section (11), and the top end of the needle cannula (3) is inserted into the conical transition The end of the segment (11) is fixedly connected with it, and the male end (2.1) of the Clifford connector is connected with the needle cannula (3) through the puncture guide connecting pipe (1); it also includes a negative pressure blood sampler (8), the said The negative pressure blood sampler (8) is threadedly connected with the female end (2.2) of the Clifford connector. 2. The indwelling needle according to claim 1, wherein an inclined angle is set between the needle cannula (3) and the skin contact surface of the puncture guide connecting tube (1). , the needle cannula (3) is inclined toward the human body contacting direction, and the inclined angle is 10°. 3. The indwelling needle according to claim 1, characterized in that it further comprises a tube foot (4), and the tube foot (4) is arranged on the outer edge of the Clifford joint (2). And bevel around the inner female end of the Clifford connector (2.2). 4. The indwelling needle according to claim 1, characterized in that it further comprises fixed wings (5), and the fixed wings (5) are arranged on both sides of the Clifford joint (2). 5. An indwelling needle for effectively avoiding blockage according to claim 4, characterized in that: the fixed wing (5) is a triangular fixed wing, and the triangular fixed wings ( 5) It forms a triangular structure with the Clifford joint (2) and the puncture guide connecting tube (1). 6 . The indwelling needle according to claim 3 , wherein the tube foot ( 4 ) and the fixed wing ( 5 ) are integrally formed. 7 . 7. The indwelling needle according to claim 1, characterized in that it further comprises a heparin cap (6), and the heparin cap (6) is provided on the Clifford joint by sealing the tube with heparin. (2) and communicate with the Clifford connector (2). 8. The indwelling needle according to claim 1, characterized in that it further comprises an infusion three-way tube (7), and the infusion three-way tube (7) is arranged on the puncture guide connecting tube (1) and the Clifford connector (2). 9. The indwelling needle according to claim 1, wherein the indwelling needle is characterized in that: the indwelling needle is a polyurethane indwelling needle.