CN201379891Y

CN201379891Y - Multi-cavity catheter

Info

Publication number: CN201379891Y
Application number: CN200920146111U
Authority: CN
Inventors: 刘顺利; 李彦锋; 靳风烁; 霍文谦
Original assignee: Third Military Medical University TMMU
Current assignee: Third Military Medical University TMMU
Priority date: 2009-03-26
Filing date: 2009-03-26
Publication date: 2010-01-13
Anticipated expiration: 2019-03-26

Abstract

A multi-cavity catheter comprises cavities A, B and C, a locating bladder and an expansion bladder. The expansion bladder is annularly bushed on the outer wall of the multi-cavity catheter and is communicated with the cavity B arranged inside the catheter; and the locating bladder is communicated with the cavity A. Through the arrangement of the expansion bladder on the outer wall of the multi-cavity catheter, the expansion bladder is communicated with the cavity B. During the treatment of urethrostenosis, the multi-cavity catheter is inserted into the urethra and liquid is slowly injected into the expansion bladder through the cavity B until a patient feels slight expansion of the urethra. The multi-cavity catheter solves the blindness of the conventional expansion therapy and the expansion of the catheter can be adjusted according to the situations of different people to be treated, so as to relieve the pain of patients and improve the success ratio of urethrostenosis treatment.

Description

A kind of multi-cavity catheter

Technical field

This utility model belongs to medical device, relates in particular to a kind of multi-cavity catheter.

Background technology

At present, can cause the reason of urethral stricture or atresia to have a lot, for example: inflammation, wound, iatrogenic injury or congenital abnormal development etc. all may cause urethral stricture or atresia.

External first Application cryoprobe sight glass direct-view in 1972 is urethra inscribe art treatment urethral stricture down, and this modus operandi safety is higher, damage lessly, can carry out repeatedly, becomes the prefered method for the treatment of the urethral stricture disease.But because the scar tissue excision is not thorough, intraoperative blood loss is big, and the urethral stricture relapse rate is up to 78%.Therefore, the urethral stricture disease is considered to one of disease very thorny in the Urology Surgery processing difficult and complicated illness.

The main Therapeutic Method of the urethral stricture that the early treatment is slight is the urethral dilatation method.Because traditional urethral dilatation method has blindness, crowd's urethra width difference of all ages and classes, the width of dilating catheter is single, if dilating catheter directly inserts urethra, damage some patient's mucous membrane of urethra easily, the pain perception that adds the heavy patient, even might cause via complication such as, urethro rectal fistulas, the conduit of urethral dilatation simultaneously often is difficult to make the urethral dilatation failure by narrow positions.

The utility model content

Technical problem to be solved in the utility model provides a kind of multi-cavity catheter.Multi-cavity catheter inserted expansion gradually behind the urethra, till the patient feels that urethra has mild pain, reduced patient because the additional pain that urethral dilatation has brought, well alleviated the degree of urethral stricture.

In order to address the above problem, this utility model is taked following technical scheme: a kind of multi-cavity catheter, comprise A chamber, B chamber and C chamber, and also comprise: location capsule and expansion capsule, described expansion capsule is located on the multi-cavity catheter outer wall, is communicated with B chamber in being arranged at conduit; Described location capsule is communicated with the A chamber.

Preferably, described multi-cavity catheter outer wall is provided with the scale groove.

Preferably, described scale inside grooves is provided with scale.

Preferably, also comprise: cutting ferrule, described cutting ferrule are fixed in expansion capsule surface.

Preferably, described expansion capsule outer surface is provided with ripple.

Preferably, also comprise unidirectional relief valve, described unidirectional relief valve is arranged between expansion capsule and the C chamber, and the expansion capsule is communicated with by relief valve with the C chamber.

The multi-cavity catheter that this utility model provides, by the expansion capsule being set at the multi-cavity catheter outer wall, described expansion capsule is communicated with the B chamber, when carrying out the urethral dilatation treatment, multi-cavity catheter is inserted urethra, inject liquid by the B chamber slowly to the expansion capsule then, feel that up to patient urethra stops to inject liquid when slight bloated sense is arranged, well solved the blindness of traditional expansion therapy, can adjust the degrees of expansion of dilating catheter according to the ill crowd of difference, reduce patient's pain, improved the success rate of treatment urethral stricture.

Description of drawings

Fig. 1 is the structural representation of this utility model multi-cavity catheter;

Fig. 2 is this utility model multi-cavity catheter first example structure sketch map;

Fig. 3 is this utility model multi-cavity catheter second example structure sketch map.

The specific embodiment

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, this utility model is described in further detail below in conjunction with the drawings and specific embodiments.

With reference to figure 1, as described in Figure 1, multi-cavity catheter 16 adopts the conduit of three-cavity structure, comprise A chamber 12, B chamber 14, C chamber 13, location capsule 11 and expansion capsule 15 are located on multi-cavity catheter 16 outer walls, keep the 2cm-5cm distance between location capsule 11 and the expansion capsule 15, the width of wherein locating capsule 11 is less than 1cm, the width of expansion capsule 15 is between 2cm-12cm, and A chamber 12 is passed catheter main body and is communicated with location capsule 11, and B chamber 14 is passed catheter main body and is communicated with expansion capsule 15; To locate capsule 11 and be fixed in the human bladder, arrive expansion capsule 15, till patient's urethra is felt the slight sense of expanding, stop to import liquid or gas by B chamber 14 input liquid or gas; Can be according to the ill crowd's of difference concrete condition, optionally slowly the liquid or the gas of input expansion usefulness carry out the expansion at urethral stricture place, day by day inject normal saline on a small quantity, after the course of treatment, to locate the liquid or the gas of capsule and expansion capsule by A chamber and B chamber and extract out, reduce the additional pain of patient when treatment.

In order to reduce side effect that treatment produces with reference to figure 2, expansion capsule 15 outer walls are equipped with cutting ferrule, multi-cavity catheter is outside equipped with the scale groove, its inside is provided with scale, when treatment, determine the width at urethral stricture position and narrow positions distance by the chamber mirror apart from urethral orifice, according to described chamber mirror definite width and distance, utilize a plurality of cutting ferrules 21 to be fixed on expansion capsule 15 outer walls, the length of selection expansion and inflexion point are apart from the distance of urethral orifice, and then will carry out dilation therapy in the described multi-cavity catheter insertion urethra, purpose is that preventing to expand capsule oppresses other not disease sites when expansion.

In order to prevent that medical personnel from expanding the additional misery that the excessive tube wall ischemia necrosis that causes of intraluminal pressure brings to patient because carelessness makes when treating urethral stricture, can some relief valves be installed at expansion capsule and C chamber, when the internal pressure of expansion capsule during greater than the pressure release limit of relief valve, excrete from the C chamber from the liquid or the gas of the input of B chamber, need to prove, according to all ages and classes section crowd's urethra relief valve the different pressure release abilities of ability to bear different choice of pressure.

With reference to figure 3, be fixed on expansion capsule outer wall more closely in order to make cutting ferrule 22, expansion capsule outer surface can be provided with some ripples 31, cutting ferrule is enclosed between the ripple, prevents that cutting ferrule from sliding.

This utility model also has many functions except treating urethral stricture, for example: repair because the mucous membrane of urethra of surgical injury, to treat skin graft and be fixed in expansion capsule surface, described multi-cavity catheter is stretched into urethra, utilize the chamber sem observation to stretch into the position, to expand the fixed treatment skin graft in capsule surface and aim at damaged mucosa, then by B chamber injecting gas or liquid, be pressed on damaged tube wall place up to the treatment skin graft, stop fluid injection body or gas, the pressure of appropriateness plays good hemostasis by compression and prevents the narrow purpose that takes place once more.This modus operandi is simple, practical.

Therefore, the technical scope of this utility model is not limited to the content on the description, also has the concrete technical application scheme of much determining according to its claim.The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from this utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1, a kind of multi-cavity catheter comprises A chamber, B chamber and C chamber, it is characterized in that also comprising: location capsule and expansion capsule, and described expansion capsule is located on the multi-cavity catheter outer wall, is communicated with B chamber in being arranged at conduit; Described location capsule is communicated with the A chamber.

According to the described multi-cavity catheter of claim 1, it is characterized in that 2, described multi-cavity catheter outer wall is provided with the scale groove.

According to the described multi-cavity catheter of claim 2, it is characterized in that 3, described scale inside grooves is provided with scale.

4, according to the described multi-cavity catheter of claim 1, it is characterized in that, also comprise: cutting ferrule, described cutting ferrule are fixed in expansion capsule surface.

According to the described multi-cavity catheter of claim 4, it is characterized in that 5, described expansion capsule outer surface is provided with ripple.

6, according to the described multi-cavity catheter of claim 1, it is characterized in that, also comprise unidirectional relief valve, described unidirectional relief valve is arranged between expansion capsule and the C chamber, and the expansion capsule is communicated with by relief valve with the C chamber.