CN209301848U - Cannulation of venae cava - Google Patents

Abstract

The utility model discloses a kind of cannulation of venae cava, including insertion end, tube body and external end, insertion end, tube body, external end, which is integrally formed, forms an entirety, wherein insertion end and external end are made of hard PVC transparent material, tube body is made of flexible PVC transparent material, tube body is provided with interior lining ring along axial uniform intervals, it is not in contact with each other independently of one another between lining ring in adjacent two, it further include guide wire, tube body tube wall opens up the through-hole through its front/rear end along axial direction, through-hole extends forwardly into insertion end and extands rearward to external end until through external end outer end face, guide wire head end by holding the insertion of outer end face through-hole until insertion end in vitro, guide wire end stays in external end outer end face, prevent tube body from bending using guide wire as axial support when being intubated, within lining ring prevent tube body from flattening as radial support, this reality It with the novel intensity that can not only guarantee venous cannula convenient for interspersed, and can guarantee that there is flexibility after the completion of interspersed, avoid shouting pain patient.

Description

Cannulation of venae cava

Technical field

The utility model relates to cannulation of venae cava fields, more specifically, are related to a kind of cannulation of venae cava.

Background technique

It is established there are two types of the venous cannulas of cardiopulmonary bypass surgery clinical application in currently known department of cardiac surgery, first, being Without the cannulation of venae cava of reinforcing line, tube body is also easy to produce discounting phenomenon when such intubation uses, and leads to blood flow obstruction, can increase in this way Patients surgery risk is added.Second, be to be bonded with drainage head in intubation insertion end with the cannulation of venae cava for reinforcing lining structure, by Drainage head in abutting edge falls off risk, not only there is security risk, seriously affects surgical procedure, but also can jeopardize The life of patient, if while patient once move, since inner lining structure can make venous cannula be difficult to be bent in vivo, To shouting pain patient, so that patient pain increases.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of cannulation of venae cava, can not only protect The intensity of venous cannula is demonstrate,proved convenient for interspersed, and can guarantee after the completion of interspersed, there is flexibility to avoid shouting pain patient.

The purpose of this utility model is achieved through the following technical solutions: a kind of cannulation of venae cava, including insertion end, Tube body and external end, the insertion end, tube body, external end are integrally formed and form an entirety, and wherein insertion end and external end are adopted It is made of hard PVC transparent material, the tube body is made of flexible PVC transparent material, and the tube body is along axial uniform intervals It is provided with interior lining ring, is not in contact with each other independently of one another between lining ring in adjacent two, further includes a guide wire, tube body tube wall edge The through-hole through its front/rear end is axially opened up, the through-hole extends forwardly into insertion end and extands rearward to external end until running through External end outer end face, the guide wire head end by holding the insertion of outer end face through-hole until insertion end, guide wire end stays in body in vitro Outer end outer end face prevents tube body from bending when being intubated using guide wire as axial support, within lining ring as radial support Prevent tube body from flattening.

Further, through-hole circle is provided at the interior lining ring quadrantal points, the through-hole circle and interior lining ring, which are integrally formed, to be made At the through-hole circle of all interior lining rings is entirely located on same straight line and is overlapped with tube body through-hole, so that guide wire is inserted into along through-hole When run through through-hole circle, thus by all interior lining rings by through-hole circle be connected in series realization link.

Further, the interior lining ring, through-hole circle, guide wire are all made of steel wire and are made, wherein the steel wire diameter of guide wire Greater than steel wire diameter used in interior lining ring, through-hole circle.

Further, the spacing between the adjacent two interior lining rings is 3-8mm.

Further, the guide wire end is provided with spherical or annular handheld head.

Further, the insertion end is provided with conduction hole.

The beneficial effects of the utility model are: the utility model draws by the way that activity installation is pluggable in cannulation of venae cava Seal wire prevents tube body from bending so that meeting the hardness in catheterization procedure, while passing through equally distributed independent inside Circle provides radial support, anyway tube body flattening deformation guarantees good permeability, guide wire is taken out after the completion of intubation, so that tube body It can be arbitrarily bent in human body, so that comfort is increased, part shouting pain caused by avoiding patient motion excessive.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is sectional view of the Fig. 1 along line A-A.

Specific embodiment

The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing It is not limited to as described below.

As shown in figures 1 and 2, a kind of cannulation of venae cava, including insertion end 1, tube body 3 and hold 2 in vitro, the insertion end 1, pipe Body 3, external end 2 are integrally formed and form an entirety.In appearance, the cannulation of venae cava of the utility model and the prior art are basic Unanimously.Wherein insertion end 1 and external end 2 are made of hard PVC transparent material, and tube body 3 uses flexible PVC transparent material system At, flexibility PVC transparent material here refers to flexible biggish PVC transparent material, such as the PVC material that perfusion tube uses, So that tube body 3 there are enough flexibilities in the case where no liner, can arbitrarily be bent in vivo.However in order to enhance tube body 3 intensity is avoided bending or is squeezed and deformed, and tube body 3 is provided with interior lining ring 5 along axial uniform intervals, in adjacent two between lining ring 5 Be not in contact with each other independently of one another, i.e., in lining ring 5 be it is axial evenly distributed along tube body 3, design have after interior lining ring 5 it is prevented that 3 extrusion of tube body, i.e., interior lining ring 5 provide radial support.But be flexible tube body 3 be not obviously able to satisfy it is interspersed hard Degree, will necessarily bend in inserting process, be also devised with a guide wire 4 thus, open first in 3 tube wall of tube body along axial direction If running through the through-hole of its front/rear end, the through-hole extends forwardly into insertion end 1 and extands rearward to external end 2 until through external 2 outer end faces are held, 4 head end of guide wire by holding the insertion of 2 outer end face through-holes until insertion end 1,4 end of guide wire stays in external end in vitro 2 outer end faces, i.e. guide wire 4 are that activity is inserted in insertion end 1, tube body 3, holds 2 to be formed by the whole in vitro, thus to be inserted through Tractive force is provided in journey, prevents tube body 3 from bending using guide wire 4 as axial support when being intubated, is taken out after the completion of intubation Guide wire 4 avoids shouting pain patient so that tube body 3 can arbitrarily be bent fitting patient's body, at the same within 5 conduct of lining ring Radial support prevents the flattening of tube body 3 from ensure that good permeability.As shown in Fig. 2, being provided with through-hole circle at interior 5 quadrantal points of lining ring 51, the integrated molding of through-hole circle 51 and interior lining ring 5 is made, the through-hole circle 51 of all interior lining rings 5 be entirely located on same straight line and with 3 through-hole of tube body is overlapped, so that guide wire 4 runs through through-hole circle 51 when being inserted into along through-hole, so that all interior lining rings 5 are passed through through-hole circle 51 are connected in series realization linkage, i.e., the interior lining ring 5 that the bending of guide wire 4 will drive positioned at bending region in catheterization procedure is curved therewith Song, interior lining ring 5, through-hole circle 51, guide wire 4 are all made of steel wire and are made, and wherein the steel wire diameter of guide wire 4 is greater than interior lining ring 5, leads to Steel wire diameter used in hole circle 51, such as interior lining ring 5, using the steel wire of 0.5mm, guide wire 4 uses the steel wire of 1mm.Described in adjacent two Spacing between interior lining ring 5 is 3-8mm, and 4 end of guide wire is provided with spherical or annular handheld head 7, and insertion end 1 is provided with drainage Hole 6.

Remaining technical characteristic in the present embodiment, those skilled in the art can flexibly be selected according to the actual situation To meet different specific actual demands.It will be apparent, however, to one skilled in the art that: this need not be used A little specific details carry out the utility model.In other instances, it in order to avoid obscuring the utility model, does not specifically describe known Composition, structure or component limit technical protection model in the claimed technical solution of claims of the utility model Within enclosing.

In the description of the present invention, unless otherwise clearly defined and limited, term " setting ", " installation ", " phase Even ", " connection " is broader sense, and those skilled in the art should broadly understood.It, can also be with for example, it may be fixedly connected It is to be flexibly connected, or be entirely connected, or locally connect, can be mechanical connection, be also possible to be electrically connected, can be straight It connects connected, is also possible to be indirectly connected with by intermediary, can also be the connection etc. inside two elements, for this field For technical staff, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be, that is, word language Expression can be flexibly corresponding with the implementation of actual techniques, the table of the word language (including attached drawing) of the specification of the utility model Up to any single restricted explanation not constituted to claim.

The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model It is required that protection scope in.

Claims (6)

1. a kind of cannulation of venae cava, which is characterized in that including insertion end (1), tube body (3) and external end (2), the insertion end (1), tube body (3), external end (2) are integrally formed and form an entirety, and wherein insertion end (1) and external end (2) use hard PVC Transparent material is made, and the tube body (3) is made of flexible PVC transparent material, and the tube body (3) is arranged along axial uniform intervals Have interior lining ring (5), be not in contact with each other independently of one another between lining ring (5) in adjacent two, further includes a guide wire (4), the tube body (3) tube wall opens up the through-hole through its front/rear end along axial direction, and the through-hole extends forwardly into insertion end (1) and extands rearward to body Outer end (2) until through external end (2) outer end face, guide wire (4) head end by holding the insertion of (2) outer end face through-hole in vitro until Insertion end (1), guide wire (4) end are stayed in external end (2) outer end face, are propped up when being intubated using guide wire (4) as axial Support prevent tube body (3) bend, within lining ring (5) as radial support prevent tube body (3) flatten.

2. cannulation of venae cava according to claim 1, which is characterized in that be provided at interior lining ring (5) quadrantal points logical (51) are enclosed in hole, and the through-hole circle (51) is integrally formed with interior lining ring (5) and is made, and the through-hole circle (51) of all interior lining rings (5) is all It is located along the same line and is overlapped with tube body (3) through-hole, so that guide wire (4) runs through through-hole circle (51) when being inserted into along through-hole, from And all interior lining rings (5) are connected in series into realization linkage by through-hole circle (51).

3. cannulation of venae cava according to claim 2, which is characterized in that the interior lining ring (5), through-hole circle (51), guidance Silk (4) is all made of steel wire and is made, and wherein it is straight to be greater than steel wire used in interior lining ring (5), through-hole circle (51) for the steel wire diameter of guide wire (4) Diameter.

4. cannulation of venae cava according to claim 3, which is characterized in that the spacing in adjacent two between lining ring (5) is 3- 8mm。

5. cannulation of venae cava according to claim 1, which is characterized in that guide wire (4) end be provided with it is spherical or Annular handheld head (7).

6. cannulation of venae cava according to claim 1, which is characterized in that the insertion end (1) is provided with conduction hole (6).