CN202822421U

CN202822421U - Lead-in type catheter

Info

Publication number: CN202822421U
Application number: CN 201220426106
Authority: CN
Inventors: 方针强; 叶钢
Original assignee: Second Affiliated Hospital of TMMU
Current assignee: Second Affiliated Hospital of TMMU
Priority date: 2012-08-21
Filing date: 2012-08-21
Publication date: 2013-03-27
Anticipated expiration: 2022-08-21

Abstract

The utility model discloses a lead-in type catheter which comprises a catheter main body. The front end of the catheter main body is provided with a thread eye hole penetrating through the front end wall of the catheter main body. A urethrascope or a cystoscope is visually placed in a bladder in advance; one end of a fine small guide wire is placed in the bladder through a sheath of the urethrascope or the cystoscope; the guide wire is fixed; the urethrascope or the cystoscope is withdrawn; the other end of the guide wire is penetrated in through the thread eye hole of the front end of the catheter main body and penetrates through a pipe cavity draining urine; the front end of the catheter is placed into the bladder through guiding of the guide wire; the guide wire is drawn; and then the catheter is placed successively. The guiding of the guide wire solves the problem that the direction of the front end of the catheter can not be adjusted on the blindsight condition. Guided by the guide wire, the catheter can not deviate from a normal urethra and enter a perforated urethra or a urethral false way, and also can pass barriers in the urethra and forward enter the bladder, and therefore the catheter can not be folded back in the urethra or penetrate into tissues outside the bladder.

Description

The lead-in catheter

Technical field

This utility model relates to a kind of medical treatment consumptive materials, is specifically related to a kind of lead-in catheter.

Background technology

Because male urethra is long and have 2 physiological bendings, and urethral catheterization is the blind operation of looking lower, and can't freely adjust the direction at catheter tip, therefore, concerning the male patient, safety smoothly urethral catheterization requires urethra continuous and complete, and urethral wall is smooth and unobstructed, and whole urethra only has a device for cleaning pipeline to bladder and without fork.The situation that urethra is damaged usually occurs clinically, except urethral trauma, following situation is more common clinically:

1. urethral trauma or urethral stricture operative treatment are by the urethra restenosis often occurring, therefore need regularly row urethral dilatation treatment, for the doctor who lacks experience or the capable urethral dilatation person that uses force, easily form urethra perforation, even forming false urethra, site of perforation or false urethra area often are positioned at narrow section urethra or prostatic urethra.This type of patient if energy voluntary micturition person runs into surgery anesthesia or stupor situation, needs row urethral catheterization short-term indwelling catheter; If there is the urethral stricture interior dissector that again performs the operation, also need the row urethral catheterization to place catheter.In this case, because it is smooth that urethral wall is owed, its slickness is damaged, and cause the uniqueness of urethral passage to be damaged because of urethra perforation or via formation, urethral catheterization this moment is often very difficult, catheter most advanced and sophisticated uncontrollable, be easy to again enter site of perforation or via in, thereby increase the weight of injury of urethra and can't successful urethral catheterization.

2. Patients with Prostatic Hyperplasia, because the impact of prostate and seminal colliculus, often prostatic urethra owes smooth, and is uneven, and bladder cervix rear lip is raised, just such as the barrier on the level road, at this moment capable urethral catheterization, catheter for want of guides often can't clear the jumps and moves on, but turns back at the barrier place, this moment not only can't successful urethral catheterization, and inflates the damage that causes urethra because air bag is positioned at urethra.

3. the present first-selected Transurethral prostatic electroresection A of prostatic hyperplasia, for experienced surgical doctor, the prostate excision of hypertrophy is all more thorough, can reach the degree of open surgery prostatectomy.At this moment, the prostatic of excision forms a larger cavity, and itself and bladder cavity are only every neck of bladder, and this moment is because the excision of prostatic urethra, neck of bladder is only fixed by connective tissue on every side, or cavity occurs from having no progeny to separate at posterior wall of urinary bladder with surrounding tissue because of neck of bladder.In these cases, the seriality of urethra is destroyed at prostatic part, and this moment must row urethral catheterization indwelling catheter, and air bag must be positioned at bladder neck and can not be positioned at prostatic part, so just can reach hemostasis by compression and make things convenient for continuous bladder irrigation, thereby keep urine drainage unobstructed.Yet urethral catheterization this moment often is difficult to successfully, because the catheter tip enters in the cavity behind the prostate excision, because the obstruct of neck of bladder, can't cross smoothly neck of bladder and enter bladder, thereby at the prostatic part fold back, have urine to draw this moment, and enter length and to enter the length of bladder similar, can't judge accurately whether catheter enters bladder, this moment, air bag often was positioned at prostatic part; More have even, catheter enters outside the bladder at the tissue that this passes around the disconnected neck of bladder, not only can't drainage of urine, increase the weight of on the contrary neck of bladder and surrounding tissue damage and hemorrhage, perhaps cause neck of bladder fully from breaking; Because tissue injury maybe can't reach the purpose of good drainage of urine and hemostasis, postoperative may need again to remove under the cystoscope blood clot hemostasis or open surgery hemostasis and place catheter.

In view of above-mentioned three kinds of clinically common necessary urethral catheterization but situations of being difficult to urethral catheterization, if fail urethral catheterization, not only increased patient's misery, and easily cause the urethra equivalent damage, and not only affect therapeutic effect, cause operative failure or operative treatment again, and the complication of urethral stricture easily appears, prolong treatment time, greatly increased patient's financial burden and mental burden, also greatly wasted national medical resource.

The utility model content

The purpose of this utility model is to provide a kind of lead-in catheter, and the front end by the guiding catheter makes catheter insert smoothly bladder, avoids the damage of urethra, improves the effect for the treatment of.

For achieving the above object, the technical solution of the utility model is: the lead-in catheter, comprise the catheter main body, and the front end of described catheter main body is provided with one through the thread eye of catheter body front end wall.

When adopting technique scheme, enter bladder by looking at lower placement urethroscope or cystoscope straight in advance, through its mirror sheath one end of tiny seal wire is put into bladder, fix seal wire, withdraw from cystoscope or urethroscope, the other end of this seal wire is penetrated through the thread eye of the front end of catheter main body, and then the tube chamber that runs through drainage of urine by the guiding of this seal wire, inserts bladder with the catheter front end, extract seal wire out, successfully insert catheter.The guiding of seal wire has solved the blind problem that can't adjust the front extreme direction of catheter of looking down, because the guiding of seal wire being arranged, enter with regard to not departing from normal urethra the urethra of perforation or urethra via in, continue to move forward into bladder and can not cause catheter in urethra, to turn back or penetrate outside the bladder after also can the obstacle in crossing urethra and organize.

Further, the conduit outer wall of described catheter main body is provided with scale, and the zero groove of described scale is positioned at the front end of catheter main body.Utilize the scale on the catheter, can accurately know the length that catheter is inserted, the situation that air bag is positioned at prostatic urethra can not occur, thereby improve the chance of success of urethral catheterization and the safety of urethral catheterization.

Further, the diameter of described thread eye is 1.0～2.0mm.

Description of drawings

Below in conjunction with the drawings and specific embodiments this utility model is described in further detail:

Fig. 1 is the structural representation of this utility model lead-in catheter embodiment;

Fig. 2 is the partial enlarged drawing of Fig. 1.

The specific embodiment

As depicted in figs. 1 and 2, this utility model lead-in catheter comprises catheter 1, and the front bulkhead of described catheter 1 is penetrated with a thread eye 2, and the diameter of thread eye is 1.0～2.0mm.Wherein be provided with scale on the catheter 1, zero groove is positioned at the front end of catheter 1.Enter bladder by looking at lower placement urethroscope or cystoscope straight in advance, through its mirror sheath one end of tiny seal wire 3 is put into bladder, fix seal wire 2, withdraw from cystoscope or urethroscope, the other end of this seal wire 2 is penetrated through the thread eye 2 of the front end of catheter 1, and run through the tube chamber of drainage of urine, then pass through the guiding of this seal wire 2, catheter 1 front end is inserted bladder, extract seal wire 3 out, successfully insert catheter 1.The guiding of seal wire 2 has solved the blind problem that can't adjust catheter 1 front extreme direction of looking down, because the guiding of seal wire 3 being arranged, enter with regard to not departing from normal urethra the urethra of perforation or urethra via in, continue to move forward into bladder and can not cause catheter in urethra, to turn back or penetrate outside the bladder after also can the obstacle in crossing urethra and organize.

Above-described only is preferred implementation of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from this utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that this utility model is implemented.

Claims

1. the lead-in catheter comprises the catheter main body, it is characterized in that, the front end of described catheter main body is provided with one through the thread eye of catheter body front end wall.

2. lead-in catheter according to claim 1 is characterized in that, the conduit outer wall of described catheter main body is provided with scale, and the zero groove of described scale is positioned at the front end of catheter main body.

3. lead-in catheter according to claim 1 and 2 is characterized in that, the diameter of described thread eye is 1.0～2.0mm.