CN107961063A

CN107961063A - Central venous puncture trocar

Info

Publication number: CN107961063A
Application number: CN201711162850.1A
Authority: CN
Inventors: 王诗庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-11-21
Filing date: 2017-11-21
Publication date: 2018-04-27

Abstract

Central venous puncture trocar, is related to central venous puncture and puts pipe.Equipped with outer guid needle, central venous catheter, guide wire, syringe and calparine cap；The needle tubing of the outer guid needle is made of two hollow half cylinders, and the backshank of two hollow half cylinders is equipped with lock, and the needle point of two hollow half cylinders is equipped with card slot；The central venous catheter is placed in outer guid needle, and the external syringe of side pipe of central venous catheter, the supervisor of central venous catheter is connected with calparine cap；The guide wire is located in the supervisor of central venous catheter, and the tail end of guide wire passes through calparine cap and fixation, and guide wire can be advanced and be retreated by external force.

Description

Central venous puncture trocar

Technical field

The present invention relates to central venous puncture to put pipe, more particularly, to central venous puncture trocar.

Background technology

For central venous puncture tube indwelling technology in clinical practice more than 40 years, traditional puncture and intubation mode is first to be led Draw pin Needle localization, insert guide wire, exit guid needle change skin-dilating needle expand skin and insert at least four such as central venous catheter step Suddenly.It is to occur inserting guide wire and afterwards the step of on some researches show that, puncture failure has 1/4.Complex steps, it is operable Property is poor, and time-consuming, and particularly when rescuing patient, the method seems outdated.

204684358 U of Chinese patent CN disclose a kind of Y-connection of central venous puncture trocar and put pipe.For solution Certainly above-mentioned technical problem, including main adapter and wire leading pipe, main adapter both ends are respectively paracentesis trocar interface end and syringe interface End, wire leading pipe opening direction is close to syringe interface end, and the wire leading pipe is bending tube, the bending end opening direction of wire leading pipe Away from syringe interface end.The beneficial effect of the utility model is, when operator uses the Y-connection of the utility model in In cardiac vein piercing process, hand-off operation can not had to so that both hands operation be independent of each other, avoid because it is hand-off fixed when both hands Mutually touch or it is hand-off hold syringe posture when caused by paracentesis trocar move in the blood vessels, can effectively reduce spike pierces And depart from the risk of blood vessel, it is smoothed out central venous puncture.

Chinese patent CN102824206A discloses a kind of central vein puncture needle, and one end of needle tubing is arranged on needle stand, separately The end of one end is needle point；The needle point is set coning；The endoporus of the needle tubing is connected with the endoporus of needle stand；The side opening It is arranged far from the end of the needle tubing of needle stand；The instruction point is arranged on needle stand；It is described to indicate point with the center of side opening one On bar straight line；The outside diameter of the needle tubing is 0.7~1mm；When the scheme of the invention carries out central venous puncture, only once need to successfully it wear Thorn；The instruction point consistent with needle point side opening direction is provided with the needle stand, during seal wire is inserted, just can fix needle point Side opening ensures that seal wire inserts targeted vein to proximal part direction in proximal part direction；The needle tubing of the needle tubing and expansion pipe is all marked Note has scale, when puncturing pathway using expansion enlargement of pipe, can accurately hold the depth that expansion pipe is inserted, expand puncture pathway Thoroughly, hub venous catheter posting is more smooth；Can avoid puncturing repeatedly gives patient increased damage, reduces the generation of complication Rate.

Chinese patent CN102895730A discloses a kind of disposable central venous puncture bag.At present, domestic venous transfusion is put Puncture needle is penetrated after central vein during pipe and first places guide wire, then exits puncture needle, expands skin with skin dilator, further along Guide wire is put into central venous catheter.The drawback is that：1st, guide wire may touch heart, cause arrhythmia cordis.2nd, skin Expander expands skin, guide wire may be caused to bend, conduit inserts difficulty, so that puncture failure.3rd, conduit is thicker, central vein Catheter associated infection probability is big.The disposable central venous puncture bag that the invention uses is by central venous catheter, puncture needle group Into；There is a conduit epitheca outside puncture needle, conduit epitheca has the fracture impression of easily openable.In use, central venous catheter by Conduit epitheca is built into.Easy to operate, no guide wire, without expanding skin, alleviates the wound to patient to a certain extent, Reduce the incidence of catheter associated infection.

The content of the invention

It is an object of the invention to solve that central venous puncture puts pipe complex steps, poor operability and time-consuming etc. to ask Topic, there is provided one-time puncture can solve to insert guide wire, insert central venous catheter and etc. central venous puncture trocar.

The present invention is equipped with outer guid needle, central venous catheter, guide wire, syringe and calparine cap；

The needle tubing of the outer guid needle is made of two hollow half cylinders, and the backshank of two hollow half cylinders is equipped with lock, The needle point of two hollow half cylinders is equipped with card slot；

The central venous catheter is placed in outer guid needle, the external syringe of side pipe of central venous catheter, central vein The supervisor of conduit is connected with calparine cap；

The guide wire is located in the supervisor of central venous catheter, and the tail end of guide wire passes through calparine cap and fixation, Guide wire can be advanced and be retreated by external force.

The central venous catheter can use two-chamber deep vein catheter, the internal diameter foundation of the tube body of the central venous catheter Depending on model size, the outside diameter of tube body is less than the internal diameter of outer guid needle.

The guide wire can use resistant to collapsing and antitorque knot material to be made.

Compared with prior art, it is of the invention to have the prominent advantages that：

1) single operation can be completed, and step is simple, take less, suitable for first aid.

2) pollution and the penetration damage that multi-pass operation is brought are reduced.

3) as can with reference to ultrasonic guidance puncture better.

Brief description of the drawings

Fig. 1 is the structure composition schematic diagram of the embodiment of the present invention.

Fig. 2 is longitudinal composition schematic diagram of the outer guid needle of the embodiment of the present invention.

Fig. 3 is the horizontal composition schematic diagram of the outer guid needle of the embodiment of the present invention.

Embodiment

Following embodiments will the present invention is further illustrated with reference to attached drawing.

Referring to Fig. 1~3, the embodiment of the present invention is equipped with outer guid needle 1, central venous catheter 2, guide wire 3, syringe 4 With calparine cap 5.

The needle tubing of the outer guid needle 1 is made of two hollow half cylinder A and B, the backshank of two hollow half cylinder A and B 13 are equipped with lock C, and the needle point 14 of two hollow half cylinder A and B is equipped with card slot D.

The central venous catheter 2 is placed in outer guid needle 1, the external syringe 4 of side pipe 21 of central venous catheter 2, in The supervisor 22 of cardiac vein conduit 2 is connected with calparine cap 5；

The guide wire 3 is located in the supervisor 22 of central venous catheter 2, and the tail end of guide wire 3 passes through calparine cap 5 simultaneously Fixed, guide wire 3 can be advanced and be retreated by external force.

The central venous catheter 2 can use two-chamber deep vein catheter, the internal diameter of the tube body of the central venous catheter according to Depending on model size, the outside diameter of tube body is less than the internal diameter of outer guid needle 1.

The guide wire 3 can use resistant to collapsing and antitorque knot material to be made.

Routinely punctured in use, a hand holds outer guid needle 1, another hand can pumpback syringe 4 keep negative pressure, reach Behind central vein position, syringe 4 can the smooth kermesinus blood of pumpback, can insert at this time central venous catheter 2 or guiding steel Silk 3, exits outer guid needle 1, opens the lock C of outer guid needle 1, you can by outer guid needle 1 be split as two hollow half cylinder A with B and unload, continue to insert central venous catheter 2 and arrive enough depth, then fix, that is, complete the puncture and intubation operation of the present invention.

Claims

1. central venous puncture trocar, it is characterised in that equipped with outer guid needle, central venous catheter, guide wire, syringe and Calparine cap；

The needle tubing of the outer guid needle is made of two hollow half cylinders, and the backshank of two hollow half cylinders, which is equipped with, to be latched, in two The needle point of empty semicylinder is equipped with card slot；

The central venous catheter is placed in outer guid needle, the external syringe of side pipe of central venous catheter, central venous catheter Supervisor be connected with calparine cap；

The guide wire is located in the supervisor of central venous catheter, and the tail end of guide wire passes through calparine cap and fixation, guiding Steel wire is advanced and is retreated by external force.

2. central venous puncture trocar as claimed in claim 1, it is characterised in that the central venous catheter is deeply quiet using two-chamber Arteries and veins conduit.

3. central venous puncture trocar as claimed in claim 1, it is characterised in that the internal diameter of the tube body of the central venous catheter According to depending on model size, the outside diameter of tube body is less than the internal diameter of outer guid needle.

4. central venous puncture trocar as claimed in claim 1, it is characterised in that the guide wire is using resistant to collapsing and antitorque Knot material is made.