CN201257181Y

CN201257181Y - Hemodialysis duct

Info

Publication number: CN201257181Y
Application number: CNU2008201226240U
Authority: CN
Inventors: 刘万兵; 范霈
Original assignee: Lepu Medical Technology Beijing Co Ltd
Current assignee: Lepu Medical Technology Beijing Co Ltd
Priority date: 2008-09-19
Filing date: 2008-09-19
Publication date: 2009-06-17
Anticipated expiration: 2018-09-19

Abstract

The utility model relates to a blood dialysis conduit which comprises a main tube (4), two extension tubes (2), a fixed base (6) and a fixed clamp (7), wherein two independent cavities are arranged in the main tube (4), the side surfaces of each of the two cavities are respectively provided with an artery side outlet (8) and a vein side outlet (9), the minimum distance between the artery side outlet (8) and the vein side outlet (9) is 10 mm, the front end of the main tube (4) is a tip end (5), scale values are marked on the main tube (4), the two extension tubes (2) are connected with the main tube (4) by a triangle base (3), a branched structure is in the triangle base (3) and is used for the respective communication of the two cavities of the main tube with the two extension tubes (2), the fixed base (6) is arranged on the triangle base (3), the fixed clamp (7) is connected with the fixed base (6), and both ends of the fixed clamp (7) are provided with clamping structures. The utility model reduces the possibility of the second dialysis and enables the doctor to know the length of the conduit entering the blood vessel, and the clamping structure satisfies the requirements of different doctors on the structure of the extension tube so as to greatly increase the work efficiency.

Description

A kind of hemodialysis catheter

Technical field

This utility model relates to medical instruments field, relates in particular to a kind of hemodialysis catheter that uremic patient, poisoner are carried out acute hemodialysis.

Background technology

In acute hemodialysis, the doctor often needs the blood of human body is imported to dialyser at present, and blood is sent blood vessel back to by pipeline after filtering again.Apparatus commonly used is exactly a hemodialysis catheter.The point that dialysis catheter enters the person in charge of human body is the flexible material of taper, be responsible for inside and be divided into independently two chambeies, on tube wall, having the side mouth respectively near most advanced and sophisticated position, blood is derived and imported to the both sides mouth respectively, the side mouth of deriving blood is an ostium venosum cordis, the side mouth that imports blood is an ostium arteriosum, product in the past is because the side mouth distance on person in charge's tube wall is little or the unreasonable structure of side mouth, be very easy to cause the blood eddy current, make blood carry out the secondary dialysis, directly influenced the effect of hemodialysis.

Dialysis catheter is called to prolong at the external pipeline that is connected with two chambeies in the person in charge manages, and according to the difference of doctor's practical operation method, prolongs pipe and is divided into straight peen and bends first two.Because need import seal wire in prolonging pipe in operation, the conduit of elbow just has certain difficulty, is easy to prolong the operating time of operation.And because the difference of processing technology, different doctors need prepare straight peen and curved first two dialysis catheter.

In addition, because unmarked or labelling is unreasonable on the catheter surface, cause the doctor can not know that in use conduit enters the length of human body, need judge length in the conduit intravasation, influenced the efficient of work by method for distinguishing such as developing apparatus.

The utility model content

The purpose of this utility model provides a kind of hemodialysis catheter, makes the doctor know the length of conduit intravasation easily, and has adapted to different doctors to prolonging the requirement of tubular construction.

For achieving the above object, this utility model adopts following technical scheme:

A kind of hemodialysis catheter, this conduit comprises:

Be responsible for, inside has two independently cavitys, and the side of two cavitys has arterial side mouth and venous side mouth, and the described person in charge's front end is most advanced and sophisticated;

Article two, prolong pipe, be flexible straight tube, be connected with the person in charge by Triangulum, Triangulum inside is bifurcation structure, and two cavitys and two prolongation pipes of being responsible for are communicated with respectively;

Holder is installed on the Triangulum;

Fixation clamp is connected with holder, and the two ends of described fixation clamp have clamp structure.

Wherein, there is through hole at the two ends of holder, and projection is arranged on the fixation clamp, pass through hole by projection fixation clamp is socketed on the Triangulum.

Wherein, the clamp structure at the two ends of described fixation clamp is the flute profile clamp structure, and the inner wall section of described groove is the arc greater than semicircle.

Wherein, the arterial side mouth on the described person in charge is 3 oval openings side by side, and the distance of every adjacent 2 openings is 1～2mm; The venous side mouth is positioned at the relative side of arterial side mouth, for along charge shaft to 2 oval openings that stagger, its minimum range is 3～6mm, the minimum range of arterial side mouth and venous side mouth is greater than 10mm.

Wherein, the described person in charge's surface printing has length mark, and the distance of length mark is 10mm.

Wherein, the described person in charge's front end is softish cutting-edge structure.

Wherein, the described person in charge's cross section is two D shapes.

Wherein, the afterbody of described prolongation pipe is connected with the female Luer of standard.

The hemodialysis catheter that utilizes this utility model to provide has following beneficial effect:

1) owing to be responsible for two cavity configurations that the cross section is two D structures, can increase the flow of blood to greatest extent;

2) oval-shaped hatch frame has effectively improved the mobile performance of blood on the person in charge, has reduced the possibility of secondary dialysis;

3) doctor in use readily appreciates that the length of conduit intravasation;

4) adapted to the requirement of different doctors, thereby increased work efficiency widely the prolongation tubular construction.

Description of drawings

Fig. 1 prolongs pipe to be the structural representation of straight peen in this utility model hemodialysis catheter;

Fig. 2 is for prolonging the structural representation that pipe is used the fixation clamp bending in this utility model hemodialysis catheter;

Fig. 3 is a fixed folder structure sketch map in this utility model hemodialysis catheter;

Fig. 4 is responsible for the cross section to be two D shape sketch maps in this utility model hemodialysis catheter;

The arteriovenous side mouth sketch map of Fig. 5 for being responsible in this utility model hemodialysis catheter;

Among the figure: 1, female Luer; 2, prolong pipe; 3, Triangulum; 4, be responsible for; 5, tip; 6, holder; 7, fixation clamp; 8, arterial side mouth; 9, venous side mouth.

The specific embodiment

The hemodialysis catheter that the utility model proposes is described as follows in conjunction with the accompanying drawings and embodiments.

As shown in Figure 2, hemodialysis catheter comprises in the present embodiment: be responsible for 4, inside has two independently cavitys, and the side of two cavitys has arterial side mouth 8 and venous side mouth 9, be responsible for 4 end and have softish most advanced and sophisticatedly 5, be responsible for 4 surface and be printed on scale value; Article two, prolong pipe 2, be flexible straight tube, be connected with the person in charge 4 by Triangulum 3, Triangulum 3 inside are bifurcation structure, and two cavitys and two prolongation pipes 2 of being responsible for 4 are coupled together respectively, form path, and the end of prolongation pipe 2 is connected to the female Luer 1 of standard; Holder 6 is installed on the Triangulum 3, and fixation clamp can be connected with holder 6, and the two ends of fixation clamp have clamp structure, will prolong pipe 2 crooked backs when needed by the clamp structure clamping.

As Fig. 2, present embodiment intermediate cam seat 3 is installed with holder 6 sockets, and there is through hole at the two ends of holder 6, on the fixation clamp 7 projection are arranged, and pass through hole by projection fixation clamp 7 is socketed on the Triangulum 3.Dialysis catheter can prolong pipe 2 crooked backs and be fixed on the fixation clamp 7 by clamp structure after conduit be inserted well, makes prolongation pipe 2 form crooked structure, has greatly made things convenient for the operation of doctor to dialysis catheter.

As shown in Figure 3, the clamp structure at the two ends of fixation clamp 7 is for being specially the flute profile clamp structure, and the two ends of fixation clamp 7 are respectively equipped with groove, and the inner wall section of groove is the arc greater than semicircle.

As shown in Figure 4, the cross section is two D shapes, and promptly two chambeies are two D luminal structures, and this structure can increase the flow of blood to greatest extent.

The degree of depth that can insert with indication in the surperficial indexing value of being responsible for 4 in the present embodiment also can adopt other length mark, is the length mark of 10mm as adopting marking path.

Dialysis catheter is responsible for that both sides side mouth is generally 2-3 through hole on two chambeies, and the minimum range of both sides mouth is greater than 10mm.As shown in Figure 5, the arterial side mouth 8 on the person in charge 4 is 3 oval openings side by side, and the distance of every adjacent 2 openings is 1～2mm; Venous side mouth 9 is positioned at the relative side of arterial side mouth 8, is along being responsible for 42 oval openings that axially stagger, and its minimum range is 3～6mm, and the minimum range L of arterial side mouth 8 and venous side mouth (9) is greater than 10mm.

Above embodiment only is used to illustrate this utility model; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.

Claims

1, a kind of hemodialysis catheter is characterized in that, this conduit comprises:

Be responsible for (4), inside has two independently cavitys, and the side of two cavitys has arterial side mouth (8) and venous side mouth (9), and the described person in charge's (4) front end is most advanced and sophisticated (5);

Article two, prolong pipe (2), be flexible straight tube, is connected with being responsible for (4) by Triangulum (3), Triangulum (3) inside is bifurcation structure, (2) is managed in two cavitys of the person in charge and two prolongations be communicated with respectively;

Holder (6) is installed on the Triangulum (3);

Fixation clamp (7) is connected with holder (6), and the two ends of described fixation clamp (7) have clamp structure.

2, hemodialysis catheter as claimed in claim 1 is characterized in that, there is through hole at the two ends of described holder (6), and fixation clamp has projection on (7), passes through hole by projection fixation clamp (7) is socketed on the Triangulum (3).

3, hemodialysis catheter as claimed in claim 1 or 2 is characterized in that, the clamp structure at the two ends of described fixation clamp (7) is the flute profile clamp structure, and the inner wall section of described groove is the arc greater than semicircle.

4, hemodialysis catheter as claimed in claim 1 is characterized in that, the arterial side mouth (8) on the described person in charge (4) is 3 oval openings side by side, and the distance of every adjacent 2 openings is 1～2mm; Venous side mouth (9) is positioned at the relative side of arterial side mouth (8), is 2 oval openings that axially stagger along the person in charge (4), and its minimum range is 3～6mm, and the minimum range of arterial side mouth (8) and venous side mouth (9) is greater than 10mm.

5, hemodialysis catheter as claimed in claim 1 is characterized in that, the described person in charge's (4) surface printing has length mark, and the distance of length mark is 10mm.

6, hemodialysis tube as claimed in claim 5 is characterized in that, the described person in charge's front end is softish cutting-edge structure.

7, hemodialysis catheter as claimed in claim 1 is characterized in that, the described person in charge's (4) cross section is two D shapes.

8, hemodialysis catheter as claimed in claim 1 is characterized in that, the afterbody of described prolongation pipe (2) is connected with the female Luer (1) of standard.