Reducing venous cannulationTechnical field
This utility model relates to technical field of medical instruments, especially relates to a kind of reducing venous cannulation.
Background technology
In clinical operation, venous cannulation afterbody need to be connected with extension tube, by extension tube, blood in venous cannulation is carried out to water conservancy diversion, to allow blood again flow into intravenous through circulation canal in vitro.At present, while using venous cannulation between child and baby, owing to being subject to the restriction of venous cannulation size, need provide the venous cannulation interface of different size to mate, if interface diameter is the venous cannulation of 6.3mm and 8mm, need to use reducing adapter coupling to be connected with extension tube, could allow the venous cannulation with single face diameter meet the restriction of 6.3mm and 8mm dimensions, use the cushioning effect of reducing adapter coupling, blood in venous cannulation is carried out to water conservancy diversion, and then between child and baby.
But in adopting reducing adapter coupling process, the blood in venous cannulation can be via different pipelines circulations, now, blood in vitro in the process of circulation flow velocity can change, increased the danger that blood quality destroys, be unfavorable for the lifting of water conservancy diversion effect.
Utility model content
Based on this, be necessary for the deficiencies in the prior art, a kind of reducing venous cannulation is provided, without using reducing adapter coupling, reduce blood change in flow in vitro, alleviate the destruction that blood causes in the process of circulation, promote blood transport quality.
For solving the problems of the technologies described above, the technical scheme that this utility model adopts is: a kind of reducing venous cannulation, it comprises the intubate main body connecting successively, the first pipeline and second pipe, described intubate main body is hollow structure, described intubate body front end portion is provided with perforate, described the first pipeline is communicated with described intubate main body, described second pipe and described the first pipeline communication, described second pipe comprises the second conduit and the second separator tube, described the second separator tube leading section is communicated with described the first pipeline coupling, described the second separator tube tail end is communicated with described the second conduit coupling, described the second catheter diameter is greater than described the first internal diameter of the pipeline.
Therein in an embodiment, described the first pipeline comprises the first conduit and the first separator tube, described the second separator tube leading section is communicated with described the first conduit coupling, the first separator tube leading section is communicated with described intubate main body coupling, described the first separator tube tail end is communicated with described the first conduit coupling, and described the first catheter diameter is greater than described intubate inner major diameter.
In an embodiment, described the first conduit is cylindrical shape structure therein, and described the first separator tube is tapered tubular structure.
In an embodiment, described the second catheter diameter is 8mm therein, and described the first catheter diameter is 6.3mm.
In an embodiment, described the second conduit is cylindrical shape structure therein, and described the second separator tube is tapered tubular structure.
In an embodiment, described intubate main body, the first pipeline and second pipe are constructed by an extrusion molding therein.
In sum, this utility model reducing venous cannulation, by the first pipeline and second pipe are integrated in to one, utilizes the effect of the first separator tube and the second separator tube, reduces the damage that blood causes in the process of circulation; Avoid outside reducing adapter coupling to dock with extension tube again after on different inner diameters conduit simultaneously, reduced the link that blood circulates in vitro, promoted the conveying quality of blood.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model reducing venous cannulation;
Fig. 2 is the generalized section of the venous cannulation of this utility model reducing shown in Fig. 1.
The specific embodiment
For further understanding feature of the present utility model, technological means and the specific purposes that reach, function, below in conjunction with accompanying drawing and the specific embodiment, this utility model is described in further detail.
As depicted in figs. 1 and 2, this utility model reducing venous cannulation comprises intubate main body 10, the first pipeline 20 and the second pipe 30 connecting successively, described intubate main body 10, the first pipeline 20 and second pipe 30 are constructed by an extrusion molding, described intubate main body 10 is hollow structure, described intubate main body 10 leading sections are provided with perforate 11, and described intubate main body 10 is carried out water conservancy diversion by described perforate 11 by the blood in vein.
Described the first pipeline 20 is communicated with described intubate main body 10, described the first pipeline 20 comprises the first conduit 21 and the first separator tube 22, described the first conduit 21 is cylindrical shape structure, described the first separator tube 22 is tapered tubular structure, described the first separator tube 22 leading sections are communicated with described intubate main body 10 couplings, described the first separator tube 22 tail ends are communicated with described the first conduit 21 couplings, and described the first conduit 21 internal diameters are greater than described intubate main body 10 internal diameters; Venous blood flows in the first separator tube 22 by the perforate 11 of intubate main body 10, and the conical surface structural texture by the first separator tube 22 is slowly guided to blood in the first conduit 21, ensures the harmless transmission to venous blood.
Described second pipe 30 is communicated with described the first pipeline 20, described second pipe 30 comprises the second conduit 31 and the second separator tube 32, described the second conduit 31 is cylindrical shape structure, described the second separator tube 32 is tapered tubular structure, described the second separator tube 32 leading sections are communicated with described the first conduit 21 couplings, described the second separator tube 32 tail ends are communicated with described the second conduit 31 couplings, described the second conduit 31 internal diameters are greater than described the first conduit 21 internal diameters, particularly, described the second conduit 31 internal diameters are 8mm, and described the first conduit 21 internal diameters are 6.3mm; Venous blood flows in the first conduit 21 by the second conduit 31, and the conical surface structural texture by the second separator tube 32 is slowly guided to blood in the second conduit 31, completes the harmless transmission to venous blood as far as possible.
When this utility model is used, when the extension tube size adopting is mated the internal diameter size of second pipe 30, extension tube is docked with second pipe 30, utilize intubate main body 10 by blood water conservancy diversion in vein out, guide functions via the first separator tube 22 and the second separator tube 32, venous blood can be flowed slowly in the different conduit of internal diameter, can effectively reduce the damage that blood causes in flow process.
When the extension tube size adopting is mated the internal diameter size of the first pipeline 20, utilize instrument that second pipe 30 is carried out to cutting, retaining the first pipeline 20 docks with extension tube, utilize intubate main body 10 by blood water conservancy diversion in vein out, guide functions via the first separator tube 22, venous blood can be flowed slowly in second pipe 30, can effectively reduce the damage that blood causes in flow process.
In sum, this utility model reducing venous cannulation, by the first pipeline 20 is integrated in to one with second pipe 30, utilizes the effect of the first separator tube 22 and the second separator tube 32, reduces the damage that blood causes in the process of circulation; Avoid outside reducing adapter coupling to dock with extension tube again after on different inner diameters conduit simultaneously, reduced the link that blood circulates in vitro, promoted the conveying quality of blood.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to this utility model scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with claims.