CN209123126U - The central venous catheter device that three-dimensional autocontrol is intubated through periphery - Google Patents

Abstract

The utility model relates to a kind of central venous catheter devices that three-dimensional autocontrol is intubated through periphery, it include silica gel long duct, one end end seals of silica gel long duct and the three-dimensional automatic control mechanism that can three-dimensional automatic opening or close equipped with one in end, three-dimensional automatic control mechanism has notch, the other end of silica gel long duct is connected with expended tube of catheter, the other end connection syringe of expended tube of catheter for negative pressure to draw blood, connection Needleless seal transfusion joint or calparine cap for connecting infusion apparatus to be infused, the central venous catheter device that the three-dimensional autocontrol of the utility model is intubated through periphery is fixed, it is easy to use, both infusion of drug can be effectively performed, it again can effectively venous blood samples liquid, and double protection backflow of blood phenomenon can be realized when stopping infusion or not being infused.

Description

The central venous catheter device that three-dimensional autocontrol is intubated through periphery

Technical field

The utility model relates to medical instruments fields, and in particular to a kind of central vein that three-dimensional autocontrol is intubated through periphery Conduit device.

Background technique

It is mainly used for infusion of drug and venous blood samples liquid in human vas through periphery intubation central venous catheter.Through periphery Being intubated central venous catheter is that conduit is placed directly within superior vena cava, and the irritation and toxicity that can reduce rapidly drug are (as by force It is very serious to blood vessel corrosion when acid, highly basic and hyperosmotic drugs venous transfusion, it is also easy to produce phlebitis).Due to can be with through peripheral catheters It is effective to reduce clinical transfusion puncture time, protect blood vessel not corroded by drug, and the advantage that indwelling time is grown, in recent years due to The raising of medical level, more and more hospitals start to be widely used.Particular for the trouble of long-term infusion treatment and postoperative chemotherapy Person is particularly important.

Summary of the invention

The utility model is intended to provide a kind of central venous catheter device that three-dimensional autocontrol is intubated through periphery, to reach both Can infusion of drug, and can venous blood samples liquid, and infusion can stopped or realizing double protection backflow of blood phenomenon when not being infused.

The technical solution of the utility model is as follows:

A kind of central venous catheter device that three-dimensional autocontrol is intubated through periphery, includes silica gel long duct, and silica gel length is led One end of pipe for being inserted into human body superior vena cava, the end end seals and end be equipped with one can three-dimensional automatically turn on or close The three-dimensional automatic control mechanism closed, three-dimensional automatic control mechanism have notch (line of rabbet joint), and when negative-pressure ward drug or blood, which will Negative pressure is opened, when positive pressure is transfused drug, the notch of the three-dimensional automatic control mechanism will positive pressure open, when stopping infusion or be not infused When, which is closed automatically, prevents blood backflow, and the other end of silica gel long duct is connected with expended tube of catheter, expended tube of catheter The other end be provided with spiral connecting interface, expended tube of catheter connects syringe by the spiral connecting interface and is taken out be used for negative pressure Blood (syringe is pulled back), expended tube of catheter connects Needleless seal transfusion joint or calparine cap by the spiral connecting interface, and leads to The Needleless seal transfusion joint or calparine cap connection infusion apparatus are crossed so that for being infused, Needleless seal transfusion joint is led in infusion It is logical, when not being infused inside in sealing state to prevent backflow of blood, realize double protection backflow of blood.Calparine cap effect with Needleless seal transfusion joint is similar, but it does not exempt to puncture quickly connection infusion apparatus function, it can only connect with it is defeated on infusion apparatus The connection of liquid needle.

Preferably, silica gel long duct is formed with concave arc shape lateral surface and concave arc shape medial surface at notch.

Preferably, the central venous catheter device that above-mentioned three-dimensional autocontrol is intubated through periphery further includes having had guiding The straight type remaining needle of effect extracts needle tubing, silica gel long duct is out of, remaining needle conduit after the straight type remaining needle is inserted into blood vessel Chamber enters human vas, after silica gel long duct enters expected length, extracts indwelling needle catheter.

It preferably, further include the seal wire for having insertion silica gel long duct to help out, seal wire is long by silica gel Conduit is extracted out after being sent into human body superior vena cava suitable position.

It preferably, further include having expended tube of catheter fixing buckle, expended tube of catheter is solid by two apertures on the wing It is scheduled on the expended tube of catheter fixing buckle, to be fixed on human body.

It preferably, further include having the silica gel long duct fixing clamp of dish-like structure long for fixing silica gel when needed Conduit.

The central venous catheter device that the three-dimensional autocontrol of the utility model is intubated through periphery is fixed, is easy to use, both may be used Be effectively performed infusion of drug, but can effectively venous blood samples liquid, and can be realized when stopping infusion or not being infused dual anti- Protect backflow of blood phenomenon.

Detailed description of the invention

Attached drawing 1 is the overall structure exploded view of the utility model；

Attached drawing 2 is the schematic diagram of silica gel long duct in the utility model；

Attached drawing 3 is the suction state diagram of three-dimensional automatic control mechanism；

Attached drawing 4 is the infusion barotropic state figure of three-dimensional automatic control mechanism；

Attached drawing 5 be three-dimensional automatic control mechanism be not infused or stationary state figure；

Attached drawing 6 is maximum cross section figure at the notch of three-dimensional automatic control mechanism；

In figure, 1 silica gel long duct, 1-1 notch, 1-1-1 notch face, 1-1-2 concave arc shape lateral surface, in 1-1-3 concave arc shape Side, 2 seal wires, 3 expended tube of catheter, 4 no-needle transfusion connectors, 5 calparine caps, 6 straight type remaining needles, 7 expended tube of catheter fixing buckles, 8 Silica gel long duct fixing clamp.

Specific embodiment

The utility model is further described combined with specific embodiments below.

It is as shown in Fig. 1 a kind of specific embodiment of the utility model, which includes silica gel long duct 1, silicon One end of glue long duct for being inserted into human body superior vena cava, the end end seals and end be equipped with one can three-dimensional open automatically The three-dimensional automatic control mechanism for opening or closing, three-dimensional automatic control mechanism have notch 1-1(as shown in Fig. 2), when negative-pressure ward drug or When blood, the notch will negative pressure open (as shown in Fig. 3), when positive pressure infusion drug when, the notch of the three-dimensional automatic control mechanism Will positive pressure open (as shown in Fig. 4), when stopping infusion or when not being infused, which is closed automatically, prevention blood backflow is (such as Shown in attached drawing 5), the other end of silica gel long duct is connected with expended tube of catheter 3, and the other end of expended tube of catheter is provided with spiral company Connection interface, expended tube of catheter connect syringe by the spiral connecting interface to be used for negative pressure blood drawing, and expended tube of catheter is by being somebody's turn to do Spiral connecting interface connects Needleless seal transfusion joint 4 or calparine cap 5, and is connected by the Needleless seal transfusion joint or calparine cap Infusion apparatus is connect so that for being infused, Needleless seal transfusion joint is connected in infusion, when not being infused inside in sealing state with Prevent backflow of blood, realizes double protection backflow of blood.

As shown in Fig. 6, silica gel long duct is formed with concave arc shape lateral surface 1-1-2 and concave arc shape medial surface 1- at notch 1-3, so that negative pressure or medical fluid normal pressure concentrate at the cambered surface, lifting negative pressure conducting or positive pressure ducting capacity, while not influencing The not sealing performance of transfusion state.

The depth of above-mentioned concave arc shape lateral surface indent be greater than concave arc shape medial surface indent depth, with solve negative pressure compared to Positive pressure is not easy the problem of being connected.

The embodiment further includes having the straight type remaining needle playing the guiding role, and after straight type remaining needle insertion blood vessel, extracts needle tubing, Silica gel long duct enters human vas from the conduit cavity of remaining needle, after silica gel long duct enters expected length, extracts Indwelling needle catheter, then silica gel long duct is connect with silica gel long duct extension tube.The embodiment further includes having insertion silica gel length to lead Seal wire 2 of the pipe to help out, seal wire are extracted out after silica gel long duct is sent into human body superior vena cava suitable position.The implementation Example further includes having expended tube of catheter fixing buckle 7, and expended tube of catheter is fixed on expended tube of catheter by two apertures on the wing and fixes It buckles, to be fixed on human body.The embodiment further includes having the silica gel long duct fixing clamp 8 of dish-like structure for solid when needed Determine silica gel long duct.

The use of the embodiment is as follows:

After the central venous catheter device that three-dimensional autocontrol is intubated through periphery is connected and fixed, medical care when if necessary to draw blood As long as personnel remove no-needle transfusion connector, the spiral connecting interface of expended tube of catheter is accessed with syringe, when syringe is pulled back, this When silica gel long duct front end three-dimensional automatic control mechanism conduit notch can negative pressure open, blood will be from the front end of silica gel long duct Notch enters conduit and enters back into syringe, completes blood drawing process.This blood drawing process is reduced without puncturing to the blood vessel of patient Frightened and pain at heart when patient punctures.

After the central venous catheter device that three-dimensional autocontrol is intubated through periphery is connected and fixed, if necessary to be carried out to patient When infusion treatment, it is only necessary to which the spiral interface of infusion apparatus connect with no-needle transfusion connector to (screwed union is directly screwed on can With).Silica gel long duct front end of the medical fluid from infusion apparatus Jing Guo peripheral catheters when infusion, at the front end notch of expended tube of catheter due to By the normal pressure for flowing through the liquid come in infusion apparatus, at this moment notch will be strutted, and liquid will enter human body from this notch Superior vena cava.

The central venous catheter device that three-dimensional autocontrol is intubated through periphery is when usually without infusion or suction blood, silica gel The notch of long duct front end will be in self-closing conjunction state automatically, and at this moment the intracorporal blood of people will not flow back into vitro from notch. Such structure design reduces the risk of backflow of blood.

Obviously, the above embodiments are only used to help understand the utility model.It should be pointed out that for affiliated technology For the those of ordinary skill in field, without departing from the principle of this utility model, the utility model can also be carried out Some improvements and modifications, modifications and modifications also fall within the protection scope of the claims of the utility model.

Claims (7)

1. a kind of central venous catheter device that three-dimensional autocontrol is intubated through periphery, it is characterised in that: include silica gel long duct (1), one end of the silica gel long duct is for being inserted into human body superior vena cava, the end end seals and is equipped with an energy in end The three-dimensional automatic control mechanism that three-dimensional is automatically turned on or closed, three-dimensional automatic control mechanism has notch (1-1), when negative-pressure ward drug Or when blood, the notch will negative pressure open, when positive pressure be transfused drug when, the notch of the three-dimensional automatic control mechanism will be pressed off just It opens, when stopping infusion or not being infused, which is closed automatically, prevents blood backflow, and the other end of the silica gel long duct connects It is connected to expended tube of catheter (3), the other end of the expended tube of catheter is provided with spiral connecting interface, and the expended tube of catheter passes through The spiral connecting interface connects syringe to draw blood for negative pressure, and the expended tube of catheter connects nothing by the spiral connecting interface Needle closed transfusion adaptor (4) or calparine cap (5), and infusion apparatus is connected to be used for by the Needleless seal transfusion joint or calparine cap Infusion, the Needleless seal transfusion joint are connected in infusion, when not being infused inside fallen with pre- resistant to blood in sealing state Stream realizes double protection backflow of blood.

2. the central venous catheter device that three-dimensional autocontrol is intubated through periphery according to claim 1, it is characterised in that: described Silica gel long duct is formed with concave arc shape lateral surface (1-1-2) and concave arc shape medial surface (1-1-3) at the notch.

3. the central venous catheter device that three-dimensional autocontrol is intubated through periphery according to claim 2, it is characterised in that: described The depth of concave arc shape lateral surface indent is greater than the depth of concave arc shape medial surface indent.

4. the central venous catheter device that three-dimensional autocontrol is intubated through periphery according to claim 1, it is characterised in that: also wrap It includes the straight type remaining needle playing the guiding role, after the straight type remaining needle insertion blood vessel, extracts needle tubing, silica gel long duct is from indwelling The conduit cavity of needle enters human vas, after silica gel long duct enters expected length, extracts indwelling needle catheter.

5. the central venous catheter device that three-dimensional autocontrol is intubated through periphery according to claim 1, it is characterised in that: also wrap Seal wire (2) of the insertion silica gel long duct to help out is included, the seal wire is quiet by silica gel long duct feeding human body epicoele It is extracted out after arteries and veins suitable position.

6. the central venous catheter device that three-dimensional autocontrol is intubated through periphery according to claim 1, it is characterised in that: also wrap It has included expended tube of catheter fixing buckle (7), the expended tube of catheter is fixed on the expended tube of catheter by two apertures on the wing On fixing buckle, to be fixed on human body.

7. the central venous catheter device that three-dimensional autocontrol is intubated through periphery according to claim 1, it is characterised in that: also wrap The silica gel long duct fixing clamp (8) of dish-like structure is included for fixing silica gel long duct when needed.