CN210078313U - A sterile dissolving syringe that reduces particle contamination - Google Patents

Abstract

A sterile drug-dissolving syringe that can reduce particle pollution, which solves the problem that the repeated insertion of traditional sterile drug-dissolving syringes easily brings rubber and other particles into the medicinal liquid, causing contamination of infusion particles, and the splashing medicinal liquid particles harm medical staff. health issues. It includes a syringe empty cylinder with a syringe piston inside, and is characterized in that: the upper end of the syringe piston is provided with a piston rod, the interior of the piston rod is provided with an embedded guide pipe arranged along the drawing direction of the piston rod, and the front end of the embedded guide pipe is arranged. It is connected with the liquid inlet hole of the inner buried tube on the syringe piston; the rear end of the inner buried guide tube is connected with one end of the catheter tube on the outside of the piston handle; the inside of the needle plug nipple at the front end of the empty barrel of the syringe is provided with a one-way liquid inlet valve . The utility model has the advantages of reasonable design and compact structure, which can avoid the contamination of infusion particles caused by repeated puncturing of the bottle stopper when adding medicine, and can effectively prevent the splashing of the liquid medicine particles, and has flexible use and strong practicability.

Description

A sterile dissolving syringe that reduces particle contamination

technical field

The utility model belongs to the technical field of medical aids, and in particular relates to a non-contamination device that can avoid the pollution of infusion particles caused by repeated puncturing of the bottle stopper when adding medicine, effectively prevent the splash of the medicinal liquid particles, and is flexible in use and strong in practicability and can reduce the particle pollution. Bacterial solution syringe.

Background technique

Sterile dissolving syringes are essential consumables for clinical dosing and bolus injection. The traditional sterile drug dissolving syringe is composed of a needle, a needle nipple, a lumen and a syringe piston. When adding medicine, the medical staff needs to insert the needle of the syringe into the medicine bottle first, and then pull out the needle after sucking a certain amount of medicine. Insert the needle into the liquid bag, and then push the plunger to push the liquid medicine in the syringe into the liquid bag to complete a dosing process. However, when increasing the dose of the drug in the aseptic dissolving syringe of the traditional structure, it is necessary to repeatedly insert the needle between the rubber stopper of the medicine bottle and the rubber stopper of the liquid bag for many times to complete the addition of the medicine. This repeated interspersed process is very easy to bring rubber and other particles into the medicinal solution, causing contamination of the infusion particles and endangering the health of the patient. In addition, in the process of repeatedly pulling the needle, it will also cause the splashing of medicinal liquid particles; the splashed medicinal liquid particles form aerosols or sprays in the air, which will cause harm to the health of medical staff through contact with the respiratory tract and skin. Therefore, it is necessary to improve the structure of the sterile drug dissolving syringe in the prior art.

Utility model content

In view of the above problems, the utility model provides an aseptic dissolving medicine which can avoid the contamination of infusion particles caused by repeated puncturing of the bottle stopper when adding medicine, effectively prevent the splashing of the medicinal liquid particles, is flexible in use and has strong practicability and can reduce the contamination of the particles. syringe.

The technical scheme adopted by the utility model is: the sterile drug dissolving syringe capable of reducing particle pollution includes an empty syringe barrel, and it is characterized in that: a syringe piston is arranged inside the empty syringe barrel, and a piston rod is arranged on the upper end of the syringe plunger , the inside of the piston rod is provided with an embedded guide pipe arranged along the drawing direction of the piston rod, and the front end of the embedded guide pipe is connected with the liquid inlet hole of the embedded pipe set on the syringe piston; the embedded guide pipe is The rear end of the syringe is connected with one end of the catheter arranged on the outside of the piston handle at the end of the piston rod; the front end of the empty barrel of the syringe is provided with a needle plug nipple, the needle plug nipple is provided with a medicine bottle puncture needle, and the needle plug The inside of the nipple is also provided with a one-way liquid inlet valve that can only allow the liquid medicine to enter the empty barrel of the syringe in one direction through the needle plug nipple.

The other end of the catheter is provided with a Y-shaped joint, the single end of the Y-shaped joint is connected with the end of the catheter, the double-ended ends of the Y-shaped joint are respectively connected with connecting hoses, and the two connecting hoses are connected with each other. The ends are respectively provided with a liquid bag puncture needle and a threaded interface. The use of a connecting hose with a liquid bag puncture needle is used for dosing, and a connecting hose with a threaded interface is used for static push of the drug, so as to realize a variety of drug injection modes, with flexible use and strong practicability.

The connecting hoses connected with the Y-shaped joint are all provided with liquid stop clips, and the liquid stop clip is composed of a U-shaped main body, and the upper and lower bending sides of the U-shaped main body are respectively provided with pipe penetration holes; The opening side of the main body is provided with a locking hypotenuse; the lower end of the locking hypotenuse is elastically connected with the lower bending edge, and the upper end of the locking hypotenuse cooperates with the locking flange at the end of the upper bending edge; A movable buckle is arranged on the inner side of the locking hypotenuse toward the hose, and a fixed buckle is arranged on the inner side of the vertical side of the U-shaped main body. The movable buckle is press-fitted on the fixed buckle to temporarily block the liquid flow in the connecting hose by using the matching and clamping between the upper end of the locking bevel and the upper locking flange of the U-shaped main body.

The catheter is provided with a filter, and the filter is provided with an inner filter screen for filtering particles in the medicinal liquid. to further purify the infused potion.

The beneficial effects of the present utility model: because the utility model adopts a syringe empty cylinder with a syringe piston inside, the upper end of the syringe piston is provided with a piston rod, and the interior of the piston rod is provided with an embedded guide tube arranged along the drawing direction of the piston rod , the front end of the embedded diversion tube is connected with the liquid inlet hole of the embedded tube on the syringe piston; the rear end of the embedded diversion tube is connected with one end of the catheter set on the outside of the piston handle at the end of the piston rod; the syringe is empty. The needle plug nipple at the front end is provided with a medicine bottle puncture needle; the inside of the needle plug nipple is provided with a one-way liquid inlet valve structure, so the design is reasonable and the structure is compact. The one-way liquid inlet valve that enters into the empty barrel of the syringe through the nipple of the needle plug in one direction realizes the one-way pumping of the syringe through the nipple of the needle plug, and the one-way bolus injection through the buried guide tube in the piston rod; The method of reciprocating and pulling the piston rod realizes the continuous filling of the dissolved drug in the liquid bag. Thus, the contamination of the infusion particles caused by repeated puncturing of the bottle stopper during drug addition is avoided, the splash of the drug solution particles is effectively prevented, and the use is flexible and practical.

Description of drawings

Fig. 1 is a structural schematic diagram of the present utility model.

FIG. 2 is a cross-sectional view of the internal structure of the empty syringe barrel of FIG. 1 .

FIG. 3 is a schematic diagram of a use state in which the piston rod in FIG. 2 is injected downward, and the liquid medicine flows back into the catheter through the embedded catheter.

FIG. 4 is a schematic structural diagram of the liquid stop clip in FIG. 1 .

Description of the serial number in the figure: 1 Syringe Empty Barrel, 2 Medicine Bottle Puncture Needle, 3 Syringe Piston, 4 Piston Rod, 5 Catheter, 6 Filter, 7 Y-Type Connector, 8 Connecting Hose, 9 Threaded Interface, 10 Liquid Bag Puncture needle, 11 liquid stop clip, 12 needle plug nipple, 13 one-way inlet valve, 14 buried pipe inlet hole, 15 buried drainage tube, 16 piston handle, 17 liquid medicine, 18 U-shaped main body, 19 upper Bending edge, 20 lower bending edge, 21 pipe hole, 22 locking flange, 23 locking bevel, 24 movable buckle, 25 fixed buckle.

Detailed ways

The specific structure of the present invention will be described in detail according to FIGS. 1 to 4 . The sterile drug dissolving syringe capable of reducing particle contamination includes an empty syringe barrel 1 for holding a medical liquid, wherein the empty syringe barrel 1 is provided with a syringe piston 3 for inhaling and discharging the medical liquid. The upper end of the syringe piston 3 is provided with a piston rod 4 for pushing the piston, and a piston handle 16 is provided at one end of the piston rod 4 located outside the empty syringe barrel 1 . The inside of the piston rod 4 is provided with an embedded guide pipe 15 arranged along the drawing direction of the piston rod 4, and the front end of the embedded guide pipe 15 is communicated with the embedded pipe liquid inlet hole 14 provided on the syringe piston 3; The rear end of the guide tube 15 is connected to one end of the guide tube 5 arranged outside the piston handle 16 at the end of the piston rod 4 . In order to further purify the added medicine, a filter 6 is arranged on the catheter 5, and an inner filter screen for filtering particles in the medicine liquid is arranged in the filter 6.

The other end of the catheter 5 is provided with a Y-shaped joint 7 , the single end of the Y-shaped joint 7 is connected with the end of the catheter 5 , and the double-ended ends of the Y-shaped joint 7 are respectively connected with connecting hoses 8 . The end of one of the connecting hoses 8 is provided with a liquid bag puncture needle 10 for inserting into the liquid bag for adding medicine, and the end of the other connecting hose 8 is provided with a connector for connecting an indwelling needle or a central venous catheter. Threaded interface 9 for drug bolus injection. Then, the connecting hose 8 with the liquid bag puncture needle 10 is used for adding medicine, and the connecting hose 8 with the threaded interface 9 is used for static pushing of the medicine, so as to realize various medicine injection modes, and improve the flexibility and practicability of the device. . At the same time, the front end of the empty syringe barrel 1 is provided with a needle plug nipple 12, and the needle plug nipple 12 is provided with a vial puncture needle 2 for inserting a medicine bottle; The plug nipple 12 enters into the one-way liquid inlet valve 13 in the empty syringe barrel 1 in one direction.

Liquid stop clips 11 for blocking liquid flow are provided on the two connecting hoses 8 connected to the Y-shaped joint 7 . The liquid stop clip 11 is composed of a U-shaped main body 18 , and the upper bent side 19 and the lower bent side 20 of the U-shaped main body 18 are respectively provided with through holes 21 for passing through the connecting hose 8 . The opening side of the U-shaped main body 18 is provided with a locking bevel 23 , the lower end of the locking bevel 23 is elastically connected with the lower bending side 20 , and the upper end of the locking bevel 23 is connected with the locking protrusion at the end of the upper bending side 19 . The edge 22 is mated and snapped. The locking bevel 23 is provided with a movable buckle 24 toward the inner side of the hose, and the inner side of the vertical side of the U-shaped main body 18 is provided with a fixed buckle 25 . Then, the upper end of the locking bevel 23 is engaged with the upper locking flange 22 of the U-shaped main body 18, and the movable buckle 24 is pressed on the fixed buckle 25 to temporarily block the liquid flow in the corresponding connecting hose. break.

When using the sterile drug dissolving syringe that can reduce particle contamination, first, insert the vial puncture needle 2 at the front end of the empty syringe barrel 1 into the vial stopper, and connect the Y-type connector 7 at the end of the catheter 5 to the vial puncture needle 2 . The liquid bag puncture needle 10 is inserted into the liquid bag; at the same time, the connection hose 8 connected to the threaded interface 9 is temporarily blocked by the liquid stop clip 11 . Then, the piston rod 4 is pulled to the rear end of the empty syringe barrel 1, and the medicinal liquid in the medicine bottle enters the cavity of the empty syringe barrel 1 through the needle plug nipple 12. The inlet valve 13 is open (as shown in Figure 2). When the liquid medicine 17 in the empty syringe barrel 1 needs to be pushed into the liquid bag, the piston rod 4 is pushed forward. At this time, due to the reverse flow of the liquid medicine, the one-way liquid inlet valve 13 is in a closed state (as shown in FIG. 3 ). shown), the medicinal liquid passes through the liquid inlet hole 14 of the embedded pipe on the syringe piston 3, is pushed back into the embedded guide pipe 15 of the piston rod 4, and enters the filter 6 through the guide pipe 5 for filtration, Then, it flows into the fluid bag connected to the fluid bag puncture needle 10 via the Y-shaped joint 7 . When it is necessary to connect with an indwelling needle or a central venous catheter, the threaded interface 9 is used, and the liquid stop clip 11 is used to temporarily block the connecting hose 8 connected to the liquid bag puncture needle 10, and the above-mentioned pulling and pulling of the piston rod 4 is repeated to suck the medicinal liquid. , Push the piston rod 4 forward to push back the liquid medicine and other operations to realize the liquid medicine bolus injection. Avoid the contamination of infusion particles caused by repeated puncturing of the bottle stopper when adding medicine, and effectively prevent the splashing of the liquid medicine particles.

Claims (4)

1. A sterile drug-dissolving syringe capable of reducing particulate contamination, comprising a syringe hollow barrel (1), characterized in that: the syringe is characterized in that a syringe piston (3) is arranged in the syringe hollow cylinder (1), a piston rod (4) is arranged at the upper end of the syringe piston (3), an embedded guide pipe (15) arranged along the drawing direction of the piston rod (4) is arranged in the piston rod (4), and the front end of the embedded guide pipe (15) is communicated with an embedded pipe liquid inlet hole (14) formed in the syringe piston (3); the rear end of the embedded draft tube (15) is connected with one end of a liquid guide tube (5) arranged outside a piston handle (16) at the end part of the piston rod (4); the front end of the empty syringe barrel (1) is provided with a pintle nipple (12), a medicine bottle puncture needle (2) is arranged on the pintle nipple (12), and a one-way liquid inlet valve (13) which can only enable liquid medicine to enter the empty syringe barrel (1) in one way through the pintle nipple (12) is arranged inside the pintle nipple (12).

2. A sterile, dissolvable drug syringe according to claim 1, having reduced particulate contamination, wherein: the other end of the liquid guide tube (5) is provided with a Y-shaped joint (7), the single end of the Y-shaped joint (7) is connected with the end part of the liquid guide tube (5), the double ends of the Y-shaped joint (7) are respectively connected with a connecting hose (8), and the end parts of the two connecting hoses (8) are respectively provided with a liquid bag puncture needle (10) and a threaded connector (9).

3. A sterile, dissolvable drug syringe according to claim 2, wherein: the liquid stopping clamps (11) are arranged on the connecting hoses (8) connected with the Y-shaped joints (7), each liquid stopping clamp (11) is composed of a U-shaped main body (18), and the upper bending edge (19) and the lower bending edge (20) of each U-shaped main body (18) are respectively provided with a through hole (21); a locking bevel edge (23) is arranged on the opening side of the U-shaped main body (18); the lower end of the locking bevel edge (23) is elastically connected with the lower bending edge (20), and the upper end of the locking bevel edge (23) is matched and clamped with the locking flange (22) at the end part of the upper bending edge (19); the inner side of the locking bevel edge (23) facing the hose is provided with a movable buckle (24), and the inner side of the vertical edge of the U-shaped main body (18) is provided with a fixed buckle (25).

4. A sterile, dissolvable drug syringe according to claim 1, having reduced particulate contamination, wherein: the liquid guide pipe (5) is provided with a filter (6), and the filter (6) is internally provided with an inner filter screen for filtering particles in the liquid medicine.

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