CN2073757U

CN2073757U - Double cavities ball sac duct for medical use

Info

Publication number: CN2073757U
Application number: CN90218235U
Authority: CN
Inventors: 何建楚
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT; Wuhan Polytechnic University
Priority date: 1990-08-18
Filing date: 1990-08-18
Publication date: 1991-03-27

Abstract

The utility model relates to a ball sac duct with double cavities which is used for the exclusions of heart valve stenosis, angiostenosis caused by aorto-arteritis and male urethra stenosis. The utility model comprises an external bag, a fabric web, an internal bag, a waist band, an outer catheter joint, an inner catheter, an outer catheter, a three-way or four-way nut screw and a needle head. One branch tube of three way and four way belongs to an injection tube, and the other branch tube exhaust pipe of the four way is higher than the injection tube. The utility model has the advantages of simple structure, skillful closing, high safety, convenient operation, reasonable ball bag length and the outer diameter of the outer catheter, little pain of patients and high successful operation ratio. The utility model is tried out by clinic, and the conditions of the patients are all improved.

Description

Medical catheter with double-cavity saccule

This utility model relates to a kind of medical apparatus and instruments, relates to a kind of catheter with double-cavity saccule that valvular stenosis, Takayasu arteritis cause angiostenosis, male urethral stricture exclusion that is used for particularly.

Catheter with double-cavity saccule is that percutaneous blood vessel (A or V) enters cardiovascular, or enters the luminal stenosis position by external opening, realizes the separating operation of narrow then with dilution contrast agent dilatation balloon.The catheter with double-cavity saccule of present clinical usefulness has two kinds in Japanese conduit and Jiangxi Hospital's conduit.Japan's conduit is seen Fig. 1, Fig. 4, and the air bag of conduit is made up of external capsule 1, fabric web 2, capsula interna 3 and belt 4, and the middle part is made up of outer catheter joint 5, inner catheter 6, outer catheter 7, and afterbody is made up of four-way 13, fastening bolt 15, syringe needle 10.Though this conduit is comparatively reasonable on the overall structure, two arm exhaustors 14 of four-way 13, syringe 11 are in same horizontal plane, make when injecting fluid, liquid have from exhaustor discharge may.11 mouthfuls of ends of syringe are provided with snap ring 16.

Jiangxi Hospital's conduit (patent No. 8821372) is seen Fig. 1, Fig. 5, its end, middle part such as Japanese conduit, and afterbody is made up of Y-piece 17, nut 18, seal washer 19, trip bolt 20, syringe needle 10.Adopt this structure still to have operation inconvenience, afterbody connects the problem that does not sternly come off easily.11 mouthfuls of ends of syringe also are provided with snap ring 16.

For the sacculus of catheter with double-cavity saccule is introduced in the body, fixedly the position of inner catheter 6 needs with adding hard tube.The hard tube tail end that adds of Japan is provided with clamp, and fastening bolt 15 is provided with draw-in groove, and the stiffened pipe box pushes inward outside syringe needle 10, and when clamp was pushed draw-in groove to, rotation can be located, so not only operation inconvenience, and turn the probability that makes the sacculus distortion when adding hard tube in addition.It is screw lid shape thing that Jiangxi adds the hard tube tail end, also will rotate when lid shape thing links to each other with syringe needle 10, and this rotation also may cause the sacculus distortion.Plastic is stressed simultaneously easily comes off.

The purpose of this utility model is the deficiency according to above-mentioned conduit, design a kind of simple in structure, easy to operate, safe and reliable, driving fit is dexterous, be more suitable for patient's Yu catheter with double-cavity saccule and add hard tube, it is also more convenient to add hard tube operation.

The purpose of this utility model realizes in the following manner, catheter with double-cavity saccule is made up of external capsule 1, fabric web 2, capsula interna 3, belt 4, outer catheter joint 5, inner catheter 6, outer catheter 7, syringe needle 10 etc., threeway 8 or four-way 13 1 ends and outer catheter 7 tight fits, one end is threaded with nut 9, directly be with the conduit 12 that syringe is housed in the one arm syringe 11 of threeway or four-way, another arm exhaustor 14 of four-way and syringe 11 be not in same level height, be higher than syringe, the external diameter of outer catheter 7 is 4.0-4.5mm.

The tail end that adds hard tube has set bolt 21.

With reference to the accompanying drawings structure of the present utility model and operating position are described in detail.

Fig. 1, the preceding half segment structure sketch map of this utility model

Fig. 2, this utility model second half section structural representation legend 1

Fig. 3, this utility model second half section structural representation legend 2

Fig. 4, Japanese conduit second half section structural representation

Fig. 5, Jiangxi Hospital's conduit second half section structural representation

Fig. 6, this utility model schematic appearance example 1

Fig. 7, stiffened tubular construction sketch map

With reference to Fig. 1-Fig. 6, this utility model is keeping under the constant situation of in-situ conduit front end, and only the tail end to conduit improves.Tail end threeway 8 or four-way 13 are threaded to an integral body with nut 19, make conduit more firm, dexterous; Simultaneously also reduced nut 19 and the joint that is connected, promptly crucial stressed joint causes the probability that gets loose because of pulling force repeatedly, thereby has improved the success rate of performing the operation in operation.

Adopt four-way 13, set up an exhaustor 14, kept the advantage of Japanese conduit exhaust and convenient than threeway 8.Exhaustor 14 is higher than syringe 11, and in the time of can avoiding injection of contrast medium, liquid is directly discharged by the exhaustor 14 of same level height.Syringe of the present utility model 11 directly with conduit 12 fits that are connected with syringe, reduced the snap rings 16 that 11 mouthfuls of ends of original syringe are provided with, make that it is simple in structure, it is tightr to connect.

The sacculus of Jiangxi Hospital's conduit long (3-4cm), this utility model sacculus long (2.5-3cm), less than Jiangxi Hospital, close with Japan.Sacculus is big, and the amount of the dilution contrast agent that need fill is big, and the time is long, and heart of patient is stimulated greatly, and it is long that two points are done blocking time, easily produces complication.The sacculus of Jiangxi Hospital need fill the 30-40ml contrast agent, and as long as this utility model is 20ml, and effect not bad than Jiangxi Hospital.

The external diameter of this utility model outer catheter 7 is 4.0-4.5mm, less than Jiangxi Hospital's conduit (5-5.5mm), greater than Japanese conduit (3.8mm).The external diameter of outer catheter 7 is little, and atrial septal puncture mouth bore is little when making mitral commissurotomy, and is little to the interatrial septum damage, improved safety, reduced complication.Though the outer catheter external diameter of Japan's conduit is littler than of the present utility model, its sacculus size is similar, and therefore the bore of required puncture orifice is also close, and the outer catheter bore is little, and TPER is then longer, so the external diameter of this utility model outer catheter 7 is comparatively reasonable.

With reference to Fig. 7, adding the hard tube tail end has set bolt 21, during operation, tail end need only be enclosed within outside the syringe needle l0, pushes inward, and when shifting correct position onto, tightens set bolt 21 and gets final product, so both easy to operate, has avoided the distortion of sacculus again.

This utility model is simple in structure, and is easy to operate, and the driving fit dexterity is safe and reliable, painful few to patient, the success rate of operation height.May nineteen ninety, utilized this utility model practicality one a routine Canis familiaris L. and the routine patient of Wuhan Concord Hospital do not see complication such as thrombosis during secondary is on probation.Patient is after expansion, and symptom is greatly improved, noise disappears, and left room dwindles.In June, 90, BJ Medical Univ People's Hospital utilized this utility model successfully to finish 7 routine rheumatic heart disease mitral stenosis expansion lobe operations, and the whole patient's noises of postoperative alleviate, PLA left atrial pressure power descends, patient all take a favorable turn satisfactory effect.

This utility model applied range also can be used for the angiostenosis that Takayasu arteritis causes, the exclusion of male urethral stricture.

Claims

1, a kind of medical catheter with double-cavity saccule that is used for the narrow exclusion of pathogenic site, form by external capsule 1, fabric web 2, capsula interna 3, belt 4, outer catheter joint 5, inner catheter 6, outer catheter 7, syringe needle 10 etc., threeway 8 or four-way 13 1 ends and outer catheter 7 tight fits, one end is threaded with nut 9, directly be with the conduit 12 that syringe is housed in the one arm syringe 11 of threeway or four-way, another arm exhaustor 14 of four-way and syringe 11 be not in same level height, be higher than syringe, the external diameter of outer catheter is 4.0-4.5mm.

2, the guiding catheter with double-cavity saccule inserts the hard tube that adds of narrow positions, it is characterized in that the tail end that adds hard tube has set bolt 21.