CN202682450U - A positive pressure connector for needle-free drug dosing - Google Patents

Abstract

The utility model discloses a positive pressure joint capable of medicating without using a needle, and the positive pressure joint comprises a hollow upper base, a sealing piece and a base. The spiral spring-shaped sealing piece is adopted, an arc-shaped hole is formed in the end surface of the sealing piece, can be effectively sealed when the medicating is not needed, and can be extruded by a medicating device to form a passage for medicating when the medicating is needed; the oval end surface and a circular hole formed in the opening part of the upper base can be effectively sealed; as being spiral spring-shaped, the elastic piece is good in elasticity and is comfortable in handfeeling when the medicating is carried out, and when the medicating device retracts, the positive pressure is formed due the elastic action, a liquid medicine retained in the needle is pushed into the blood vessel, so that the pipe sealing effect is achieved, further the backflow of blood is avoided effectively to avoid forming thrombus and blocking a catheter; 6:100 locking joints are arranged on the base to facilitate the sealing connection. According to the positive pressure joint, the production and the assembly are convenient, the positive pressure can be generated in the transfusion, the backflow of the blood can be prevented, and medical workers or other people can be prevented from being punctured.

Description

A positive pressure connector for needle-free drug dosing

technical field

The product of the utility model relates to medical instruments and supplies, in particular to a positive pressure connector for needle-free drug dosing, which can generate positive pressure in transfusion, prevent blood backflow and avoid stabbing medical staff or others. the

Background technique

In recent years, with the widespread application of venous indwelling needles, not only the pain caused by repeated venipuncture in long-term treatment has been greatly reduced, but also the workload of nursing has been reduced. However, in clinical application, new problems have been encountered, such as the indwelling tube is blocked by blood return, the heparin sodium tube sealing process is cumbersome, and the infection related to the indwelling tube and so on. In addition, for patients with bleeding and coagulation dysfunction, heparin sodium can not be used to seal the tube, so that repeated flushing, sealing, and squeezing of the tube will not only increase the nursing workload, but also increase the cost of consumables and complications for patients, and also increase the risk of complications. Increased incidence of phlebitis and  Probability of Accidental Needlestick Injury in Paramedics.

In order to solve the above problems, people have invented a needle-free airtight infusion system for intravenous infusion. This system has the advantages of convenient use, simple operation, no need for needle connection, and avoids the risk of needle stick injury. It provides simple access, which not only increases safety but also The workload of medical staff is greatly reduced, so the needle-free airtight infusion system is widely promoted clinically. the

However, in the existing needle-free closed infusion system, when the connector is pulled out after the infusion, the blood will flow back into the indwelling needle due to the negative pressure, and the stagnant blood will easily coagulate to form a thrombus, causing the indwelling catheter to be blocked , so that the next infusion can not be carried out. the

Therefore, adding a positive pressure function to the existing needle-free closed infusion system can effectively prevent the indwelling catheter from clogging. the

Contents of the invention

The purpose of this utility model is to provide a positive pressure joint device for needle-free drug dosing, which can avoid injuring medical staff or others, and can effectively prevent blood from flowing back into the indwelling needle, thereby avoiding the formation of thrombus and blocking the catheter. the

The purpose of this utility model is achieved as follows: it comprises: an upper seat part, a seal part and a base part. It is characterized in that the mouth of the upper seat is provided with a locking thread for easy connection with a joint without a needle; the outer surface of the upper seat is provided with six non-slip ribs to increase the comfort of the hand. The end surface of the seal is designed to be oval, which can effectively seal with the round hole of the upper seat mouth; there is a long arc-shaped hole in the middle of the oval end surface of the seal, which can be effectively sealed and closed when no medicine is added. The passage is formed by the extrusion of the dosing device for dosing; the seal is designed with a helical spring shape, which has good elasticity and increases the comfort of the hand when dosing. The liquid medicine in the needle is pushed into the blood vessel to achieve the effect of sealing the tube, thereby effectively preventing blood backflow, forming thrombus, and blocking the catheter. The base is designed with a 6:100 locking joint to facilitate effective sealing connection with the indwelling needle. the

With the above-mentioned technical solution, there is no need to use a dosing device with a needle, avoiding stabbing medical staff or others, and reducing cross-infection and pollution; when exiting the dosing device, a positive pressure is formed, thereby effectively avoiding blood backflow and forming A blood clot, which blocks the catheter. the

Below in conjunction with accompanying drawing and embodiment example, product of the utility model is further described. the

Description of drawings

Fig. 1 is the structural assembly diagram of the needle-free drug dosing positive pressure joint of the new structure;

Figure 2 is a cross-sectional view of the structure of the needle-free drug dosing positive pressure joint of the new structure;

Figure 3 is a schematic diagram of the seal structure of the new structure;

Fig. 4 is a schematic diagram of the end face structure of the sealing member of the new structure.

Detailed ways

As shown in sectional view 1 , a positive pressure joint for needle-free dosing includes: a sealing member 1 , an upper seat 2 and a base 3 . It is characterized in that the mouth of the upper seat is provided with a locking joint 4, and the outer wall of the locking joint 4 is provided with a locking thread to facilitate connection with a joint without a needle; the outer wall of the upper seat is provided with anti-slip ribs 5, and there are six anti-slip ribs 5 to increase the hand feeling comfort. The seal is provided with an elliptical end face 10, which can effectively seal with the round hole of the upper seat mouth; the middle of the elliptical end face 10 of the seal is provided with an arc-shaped hole 9, which can be effectively sealed and closed when no medicine is added. Dosing is carried out through the extrusion of the dosing device to form a passage for dosing; the tube wall of the seal is a helical spring-like body 11, which has good elasticity and increases the comfort of the hand when dosing, and when withdrawing from the dosing device, it is formed under the action of elastic force. Positive pressure, the base is designed with a 6:100 locking joint 6 to facilitate effective sealing connection with the indwelling needle, the seal 1 is a hollow structure, and the interior is a cavity 7 to increase the elasticity; there is also a cavity structure between the upper seat 2 and the seal 1 8. Easy to assemble. the

As shown in sectional view 2, in sectional view 2, the upper seat 2 is provided with a locking joint 4, which is convenient for connecting with a joint without a needle; as shown in sectional view 2, the outer wall of the upper seat is provided with anti-slip ribs 5 to increase the comfort of the hand; the base is designed with 6 : 100 locking joint 6 is convenient for effective sealing connection with the indwelling needle; in the sectional view 2, the sealing member 1 is a hollow structure, the interior is a cavity 7, and the tube wall is a helical spring-like body, which increases the elastic strength; the upper seat 2 and the sealing member 1 There is also a cavity structure 8, which is convenient for assembly. the

As shown in Figures 3 and 4, there is an arc-shaped hole 9 in the middle of the oval end face 10 of the seal. This hole can be effectively sealed and closed when the drug is not added. medicine; Fig. 3 is the oval end face 10 of the seal, which can effectively seal with the round hole of the upper seat mouth; It is comfortable to touch, and when withdrawing from the dosing device, a positive pressure is formed under the action of the elastic force to push the liquid medicine in the indwelling needle into the blood vessel to achieve the effect of sealing the tube, thereby effectively preventing blood backflow, forming thrombus, and blocking the catheter. the

Claims (3)

1. Needleless dosing positive pressure connector device, it comprises: seat of honour part, sealing member part and base portion is characterized in that seat of honour oral area is provided with locking screw thread and is convenient to be connected with not being with needle adapter; Seat of honour lateral surface is provided with six on-slip ribs, the sealing member end face be designed to ellipse, with the circular hole effective sealing of seat of honour oral area; Be provided with a long arc shape hole in the middle of the oval end face of sealing member, it is closed that this hole can effective sealing when not dosing, and the extruding by chemicals dosing plant when dosing forms path and carries out dosing; Seal designs has coil spring shape, when withdrawing from chemicals dosing plant, forms malleation under the elastic force effect, and the liquid medicine in the remaining needle is pushed blood vessel, reaches the effect of tube sealing, is designed with locked joints on the base and remaining needle is tightly connected.

2. a kind of Needleless dosing positive pressure connector device as claimed in claim 1 is characterized in that locked joints is the 6:100 locked joints on the base.

3. a kind of Needleless dosing positive pressure connector device as claimed in claim 1 is characterized in that sealing member is hollow structure, and inside is cavity, and tube wall is the coil spring shape body, also has cavity structure to be convenient to assembling between the seat of honour and the sealing member.

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