A kind of hemodialysis catheter of adherenceTechnical field
This utility model relates to technical field of medical instruments, particularly a kind of hemodialysis catheter.
Background technology
Generally use hemodialysis catheter when hemodialysis at present, the head of hemodialysis catheter originally offers blood outlet and mouth of sucking blood, and blood outlet and mouth of sucking blood lean on very near.The blood drawing smoothly of hemodialysis catheter must be ensured clinically, ensure the blood outlet of conduit, the unimpeded of mouth of sucking blood.But in treatment clinical course, mouth of sucking blood can absorb a large amount of dirty blood, mouth of sucking blood is easy to blood vessel wall generation sucking, blood vessel wall to be close to and sucks blood on mouth, cause near-wall air curtain, the mouth that causes sucking blood blocks, blood is made again by mouth of sucking blood, not make dialysis pipeline can not keep unimpeded normally.
For solving the problem, hemodialysis catheter capable of preventing attachment of blood vessel wall is disclosed in prior art, application number 201120041217.9, applying date 2011.02.18, dialysis catheter latter end is provided with the level and smooth changeover portion of indent, changeover portion is provided with annulus projection, the side of annulus projection is provided with side opening, and side opening is interspersed on blood drawing chamber.
But prior art still exists very large defect: blood drawing chamber is leaned on too near with the outlet in blood transfusion chamber, cause inputting the part fresh blood of blood vessel chamber of being drawn blood together with dirty blood and take away.
Utility model content
The purpose of this utility model is to provide a kind of hemodialysis catheter of adherence, by structural improvement, can contain the situation that fresh blood is taken away by catheter lumen of drawing blood well.
The purpose of this utility model is achieved in that a kind of hemodialysis catheter of adherence, comprise two pipe joints, two drainage tubes matched with pipe joint, by the catheter main body that drainage tube is connected with two pipe joints, be sleeved on the fixed-wing of catheter main body input, described catheter main body can be divided into blood line chamber spaced apart from each other, blood drawing catheter lumen, described blood line chamber, blood drawing catheter lumen is separated by dividing plate, described blood line chamber, blood drawing catheter lumen connects a pipe joint all accordingly, the front end of described dividing plate extends forward and is in blood line chamber port, the front of blood drawing catheter lumen port, described blood line chamber port, blood drawing catheter lumen port are formed by bevelled edge, vertical cut limit, described bevelled edge, vertical cut limit form continuous print edge, described vertical cut limit is perpendicular to dividing plate, described bevelled edge is longer than vertical cut limit, and the bevelled edge of blood line chamber port is contrary with the incline direction of the bevelled edge of blood drawing catheter lumen port.
Compared with prior art, the beneficial effects of the utility model are: one, the front end of dividing plate can by blood line chamber port, blood drawing catheter lumen port is completely isolated opens, and fresh blood can be prevented to be back in blood drawing catheter lumen; They are two years old, the bevelled edge of blood line chamber port is contrary with the incline direction of the bevelled edge of blood drawing catheter lumen port, blood drawing path can be made mutually to stagger with blood transfusion path and be oblique, greatly reduce the mixability of fresh blood and dirty blood, contain the situation that fresh blood is siphoned away by catheter lumen of drawing blood well.
As preferred version of the present utility model, in described blood drawing catheter lumen, the chamber wall of implantable intravascular is provided with opening, and described opening is near tube head, and described opening presents skewed.Be to increase blood drawing amount further, and opening is skewed, can increase the area of opening, to extract more dirty blood within the unit interval.
As further preferred version of the present utility model, described fixed-wing lateral wall is fixed with symmetrically two wing plates, described wing plate is fitted with and clamping can lives the clip of drainage tube.Be to prevent drainage tube from producing the phenomenon of rocking in use, thus ensure the smoothness of blood transfusion, blood drawing process.
As further preferred version of the present utility model, the top of described dividing plate is provided with fillet.To prevent catheter main body scratch blood vessel wall when inserting blood vessel.
As further preferred version of the present utility model, described clip is provided with the recess that can block drainage tube, the shape of described recess and the section of drainage tube suitable.To better drainage tube is connected on clip, further enhancing stability.
Accompanying drawing explanation
Fig. 1 is tube head schematic perspective view of the present utility model.
Fig. 2 is tube head end view of the present utility model.
Fig. 3 is the E direction view in Fig. 2.
Fig. 4 is the F direction view in Fig. 2.
Fig. 5 is integral layout schematic diagram of the present utility model.
Fig. 6 is the A-A profile in Fig. 5.
Wherein, 1 pipe joint, 2 catheter main bodies, 21 tube heads, 22 fillets, 23 blood line chambeies, 24 blood drawing catheter lumen, 25 dividing plates, 26 bevelled edges, 27 vertical cut limits, 28 openings, 3 fixed-wings, 3a wing plate, 4 clips, 4a recess, 5 drainage tubes.
Detailed description of the invention
As Figure 1-5, a kind of hemodialysis catheter of adherence, comprise two pipe joints 1, two drainage tubes 5 matched with pipe joint 1, by the catheter main body 2 that drainage tube 5 is connected with two pipe joints 1, be sleeved on the fixed-wing 3 of catheter main body 2 input, catheter main body 2 can be divided into blood line chamber 23 spaced apart from each other, blood drawing catheter lumen 24, blood line chamber 23, blood drawing catheter lumen 24 is separated by dividing plate 25, blood line chamber 23, blood drawing catheter lumen 24 connects a pipe joint 1 all accordingly, the front end of dividing plate 25 extends forward and is in blood line chamber 23 port, the front of blood drawing catheter lumen 24 port, blood line chamber 23 port, blood drawing catheter lumen 24 port are formed by bevelled edge 26, vertical cut limit 27, bevelled edge 26, vertical cut limit 27 form continuous print edge, vertical cut limit 27 is perpendicular to dividing plate 25, bevelled edge 26 is longer than vertical cut limit 27, and the bevelled edge 26 of blood line chamber 23 port is contrary with the incline direction of the bevelled edge 26 of blood drawing catheter lumen 24 port.
The front end of aforementioned barriers 25 can by blood line chamber 23 port, blood drawing catheter lumen 24 port is completely isolated opens, and fresh blood can be prevented to be back in blood drawing catheter lumen 24; The bevelled edge 26 of blood line chamber 23 port is contrary with the incline direction of the bevelled edge 26 of blood drawing catheter lumen 24 port, blood drawing path can be made mutually to stagger with blood transfusion path and be oblique, greatly reduce the mixability of fresh blood and dirty blood, contain the situation that fresh blood is siphoned away by catheter lumen 24 of drawing blood well.
As shown in Figure 4, in above-mentioned blood drawing catheter lumen 24, the chamber wall of implantable intravascular is provided with opening 28, and opening 28 is near tube head 21, and opening 28 presents skewed.Further increase the blood drawing amount of blood drawing catheter lumen 24, and opening 28 is skewed, can increase the area of opening 28, to extract more dirty blood within the unit interval.
As shown in Figure 5,6, above-mentioned fixed-wing 3 lateral wall is fixed with two wing plate 3a symmetrically, wing plate 3a is fitted with and clamping can lives the clip 4 of drainage tube 5, prevent drainage tube 5 from producing the phenomenon of rocking in use, thus ensure the smoothness of blood transfusion, blood drawing process.
As shown in Figure 1, the top of aforementioned barriers 25 is provided with fillet 22, prevents catheter main body 2 scratch blood vessel wall when inserting blood vessel.
As shown in Figure 6, above-mentioned clip 4 is provided with the recess 4a that can block drainage tube 5, the shape of recess 4a and the section of drainage tube 5 suitable.Better drainage tube 5 is stuck on clip 4, further enhancing stability.
This utility model is not limited to above-described embodiment; on the basis of technical scheme disclosed in this utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection domain of the present utility model.