CN102380154A

CN102380154A - Single-cavity air sac quasi-elliptic catheter

Info

Publication number: CN102380154A
Application number: CN2011103491054A
Authority: CN
Inventors: 林超; 李民旭
Original assignee: SHANGHAI UEG MEDICAL INSTRUMENT CO Ltd
Current assignee: Shanghai excellent medical instrument Co., Ltd.
Priority date: 2011-11-08
Filing date: 2011-11-08
Publication date: 2012-03-21
Anticipated expiration: 2031-11-08
Also published as: CN102380154B

Abstract

The invention relates to a single-cavity air sac quasi-elliptic catheter, and belongs to the technical field of medical auxiliary apparatus. The catheter is characterized in that: the radial section of a catheter body is quasi-elliptic; the end part of the head end of the catheter body is provided with an oblate ellipsoidal bulge; a quasi-elliptic and oblate ellipsoidal long axis is longitudinal; the upper half part of the head end of the catheter body is provided with an air sac; and an inclined surface is arranged below the end part of the head end of the catheter body from front to back. The invention has the advantages that: the end part of the catheter is smooth, the shape of the catheter is similar to that of an external orifice of a urethra and a urethra on a prostatic part of a human body, and the discomfort of a patient is obviously reduced; the longitudinal long axis is positioned between the quasi-elliptic catheter and the urethra, and a large gap is formed between two sides, so that urethral discharge is smoothly drained; a water inlet hole is at the lowest position, so that urine in a urinary bladder is emptied, and the infection rate of a urinary system and the enuresis possibility of the urethral orifice are reduced; and the upper part of the head end of a single-cavity prostatic catheter is elliptic, a slightly expanded part on the lower part of the catheter is lifted at the bladder neck of a patient with prostatic hyperplasia, and the head part of the catheter can be guided into the bladder along a hyperplastic middle lobe.

Description

The oval catheter of a kind of single chamber air bag class

Technical field

The present invention relates to the oval catheter of a kind of single chamber air bag class and single chamber air bag prostatic catheter, belong to the medical auxiliary apparatus technical field.

Background technology

Before medical domain internal disease, surgical diseases, obstetrical and gynecological disease, orthopaedic disease and urological diseases and operation, all need insert catheter, indwelling catheter.Catheter is a kind of medical auxiliary apparatus commonly used.Catheter is made with rubber, silica gel or plastic cement, can insert bladder so that direct urine flows out via patient's urethra.After catheter inserts bladder, near the catheter head end air bag or water pocket are arranged, with so that catheter is fixedly stayed intravesical and is difficult for deviating from, the drain of catheter partly connects urinal collection urine.

The shortcoming of existing catheter is: 1. catheter is rounded; And normal person's urinary catheter collar extension is longitudinal slot shape (1 font), and the prostatic urethra lower wall is circular-arc, and upper wall is connected to people's prefix (∧); Prostatic hyperplasia patient prostatic urethra becomes 1 font; Because catheter shape and human body urethra shape are inconsistent, so when the circular catheter dilating urethra wall of insertion, cause patient discomfort, especially prostatic hyperplasia patient; One of 2. seamless between circular catheter and the urethra, the urethra endocrine can not adequate drainage goes out externally, is prone to cause urinary system infection, epididymis, orchitis, or even the reason of later on possible generation urethral stricture; 3. air bag water-filling or inflation back are rounded, and the compressing trigone of urinary bladder causes cystospasm, patient occur frequent micturition, urgent micturition, hypogastric region suppress expand uncomfortable; 4. after the inlet opening was relatively leaned on, especially in the air bag after the water filling, air bag was big more, and the inlet opening is stretched into intravesical more, and the intravesical urine can not emptying during the band catheter, causes urinary system infection, also is patient's one of urethral orifice enuresis reason when band catheter cystospasm; 5. double channel foley balloon indwelling catheter, tail end becomes forked, and both waste material after the work intracavity operation that sheath is arranged is accomplished, can not be put into double lumen catheter again, put into back work sheath and can not extract.Need cut divergent ends clinically toward the air bag water filling.At this moment air bag is useless, and fixing catheter can not hemostasis by compression; 5. the double channel foley balloon indwelling catheter head end is straight, and is obviously outstanding in the prostatic hyperplasia middle period, is difficult for inserting intravesical when bladder neck is raised.

Summary of the invention

The objective of the invention is to overcome the defective of existing catheter; Provide a kind of single chamber air bag class oval catheter; The form of said catheter and human body external orifice of urethra, prostatic urethra form are close, not only smoothly are beneficial to the insertion urethra, are beneficial to the urethral secretions adequate drainage; Reduce urinary system infection, and patient is with sense of discomfort obviously to alleviate.

For achieving the above object; The technical scheme that adopts is: the oval catheter of a kind of single chamber air bag class; Comprise catheter body, air bag, ventilation capsule pipeline and anti back-flow valve; It is characterized in that: radial section type of being of said catheter body is oval, and the head end end of said body is oblate ellipsoid shape protrusion, and said type of major axis oval and said oblate ellipsoid shape is vertical; The head end first half of said body is equipped with air bag, and the tail end of said body top joins with the anti back-flow valve, between said air bag and the said anti back-flow valve by placing the intravital ventilation capsule of said pipe pipeline to be connected; The head end end of said body is equipped with a plurality of inlet openings.

The radial section ovalize of said body.

The below, head end end of said body is equipped with the inclined-plane in the past backward, axially is the α angle between the axis of the sideline on said inclined-plane, vertical section and said body.Said α angle is 20 °～60 °.

Radial section type of being of said body head end is oval, first half ovalize, and Lower Half is expanded outside protrusion.

It is protruding that said body tail end top is equipped with the tail fin shape, and said anti back-flow valve places the tail end of tail fin.

In the said inlet opening, have at least an inlet opening shelter to state vertical low side of body head end.

Good effect of the present invention is: 1. the catheter end is level and smooth, and type oval catheter form is near external orifice of urethra, the prostatic urethra form of human body, and institute is beneficial to insert urethra, and patient's sense of discomfort obviously alleviates, in particular for the patient of prostatic hyperplasia; 2. major axis is for longitudinally between type oval catheter and the urethra, and there is big slit both sides, are beneficial to the urethral secretions adequate drainage; 3 catheter head end inlet openings are at lowest order, and it is clean to be beneficial to the emptying of intravesical urine, reduce the probability of the urinary system infection rate and the urethral orifice enuresis; 4. air bag is attached to the first half of catheter: the fixedly effect of catheter had both been played at the bladder upper wall in the full back of air bag, did not stimulate the trigone of urinary bladder again, caused that the probability of cystospasm obviously reduces; The single not bifurcated of 5 catheter tail ends after operation is accomplished in the work sheath, can directly insert single chamber Foley catheter, extracts the work sheath, but not only fixedly catheter, but also the hemostasis by compression of full air bag; 6. it is oval that prostatic catheter head end top, single chamber is; The bottom is slightly expanded and is partly raised at prostatic hyperplasia patient's bladder neck place; Can guide the catheter head entering bladder that swashes along the outgrowth middle period, avoid present double channel foley balloon indwelling catheter head end to withstand on the outgrowth middle period and gone up the defective that is difficult for inserting bladder.

Description of drawings

Below in conjunction with the description of drawings and the specific embodiment the present invention is described further.

Fig. 1 is the oval catheter structural representation of the single chamber of the present invention air bag class;

Fig. 2 is that Fig. 1 body cephalic par A is to oblate ellipsoid shape structural representation (amplification);

Fig. 3 is the full status architecture sketch map of the oval catheter air bag of single chamber air bag class;

Fig. 4 is Fig. 3 body cephalic par A to oblate ellipsoid shape structural representation (amplification):

Fig. 5 is single chamber air bag prostatic catheter structural representation (air bag fills state);

Fig. 6 is Fig. 5 list chamber air bag prostatic catheter body cephalic par B-B schematic cross-section.

Among the figure: 1,1 '-inlet opening; The 2-air bag; 3-ventilation capsule pipeline; 4-anti back-flow valve; The oval body of 5-class; 6-expands protrusion.

The specific embodiment

Fig. 1, Fig. 2 are respectively the oval catheter structural representation of the single chamber of the present invention air bag class and body cephalic par A to oblate ellipsoid shape structural representation, Fig. 3, Fig. 4 for the full status architecture sketch map of the oval catheter air bag of the single chamber of the present invention air bag class and body cephalic par A to oblate ellipsoid shape structural representation.Visible by diagram; The oval catheter of a kind of single chamber air bag class; Comprise catheter body 5, air bag 2, ventilation capsule pipeline 3 and anti back-flow valve 4; It is characterized in that: radial section type of being of said catheter body 5 is oval, and the head end end of said body 5 is oblate ellipsoid shape protrusion, and said type of major axis oval and said oblate ellipsoid shape is vertical; The head end first half of said body 5 is equipped with air bag 2, and the tail end of said body 5 top joins with anti back-flow valve 4, between said air bag 2 and the said anti back-flow valve 4 by placing said body 5 interior ventilation capsule pipelines 3 to be connected; The head end end of said body 5 is equipped with a plurality of inlet openings 1.

The cephalic par A of single chamber Foley catheter body 5 is to oblate ellipsoid shape structure, like Fig. 2 and shown in Figure 4, and its radial section ovalize.

Fig. 5, Fig. 6 show the single chamber air bag prostatic catheter structural representation of the present invention and single chamber air bag prostatic catheter body cephalic par B-B schematic cross-section respectively.Air bag prostatic catheter body 5 cephalic par B-B cross section types of being in single chamber are oval, first half ovalize, and Lower Half is outwards expanded and is protruded 6.The below, head end end of said body 5 is equipped with the inclined-plane in the past backward; Axially angle is α angle (Fig. 5) between the axes O C of the sideline OD on said inclined-plane, vertical section and said body; There is the climbing effect on the inclined-plane of catheter front end during insertion, helps catheter and inserts use.

Said α angle is 20 °～60 °.

The bottom is slightly expanded part and is raised at prostatic hyperplasia patient's bladder neck place, can guide the catheter head entering bladder that swashes along the outgrowth middle period, has avoided present double channel foley balloon indwelling catheter head end to withstand on the outgrowth middle period and has gone up the defective that is difficult for inserting bladder.

Said body 5 tail ends top is equipped with tail fin shape convexity, and said anti back-flow valve 4 places the tail end of tail fin, and charge operation is very convenient.

In said a plurality of inlet opening 1, have an inlet opening 1 ' occupy vertical low side of said body 5 head ends at least, it is clean to be beneficial to the emptying of intravesical urine, reduces the probability of the urinary system infection rate and the urethral orifice enuresis.

Claims

1. oval catheter of single chamber air bag class; Comprise catheter body, air bag, ventilation capsule pipeline and anti back-flow valve; It is characterized in that: radial section type of being of said catheter body is oval; The head end end of said body is oblate ellipsoid shape protrusion, and said type of major axis oval and said oblate ellipsoid shape is vertical; The head end first half of said body is equipped with air bag, and the tail end of said body top joins with the anti back-flow valve, between said air bag and the said anti back-flow valve by placing the intravital ventilation capsule of said pipe pipeline to be connected; The head end end of said body is equipped with a plurality of inlet openings.

2. according to the oval catheter of the said a kind of single chamber of claim 1 air bag class, it is characterized in that: the radial section ovalize of said body.

3. according to the oval catheter of the said a kind of single chamber of claim 1 air bag class, it is characterized in that: the below, head end end of said body is equipped with the inclined-plane in the past backward, axially is the α angle between the axis of the sideline on said inclined-plane, vertical section and said body.

4. according to the oval catheter of the said a kind of single chamber of claim 3 air bag class, it is characterized in that: said α angle is 20 °～60 °.

5. according to the oval catheter of the said a kind of single chamber of claim 1 air bag class, it is characterized in that: the radial section of said body head end is for type oval, first half ovalize, and Lower Half is expanded outside protrusion.

6. according to the oval catheter of the said a kind of single chamber of claim 1 air bag class, it is characterized in that: it is protruding that said body tail end top is equipped with the tail fin shape, and said anti back-flow valve places the tail end of tail fin.

7. according to the oval catheter of the said a kind of single chamber of claim 1 air bag class, it is characterized in that: in the said inlet opening, have at least an inlet opening shelter to state vertical low side of body head end.