CN102380154B

CN102380154B - A kind of single chamber air sac quasi-elliptic catheter

Info

Publication number: CN102380154B
Application number: CN201110349105.4A
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: 2016-05-04
Anticipated expiration: 2031-11-08
Also published as: CN102380154A

Abstract

The present invention relates to the oval catheter of a kind of air bag list chamber class, belong to medical auxiliary apparatus technical field, it is characterized in that: the radial section of catheter body is class ellipse, the head end end of body is oblate ellipsoid shape protrudes, and class major axis oval and oblate ellipsoid shape is longitudinal; The head end first half of body is equipped with air bag, and the below, head end end of body is equipped with inclined-plane from front to back. Its advantage is: catheter end is level and smooth, approaches orificium urethrae externum, the prostatic urethra form of human body, and patient's sense of discomfort obviously alleviates; Major axis is that between the oval catheter of longitudinal class and urethra, You compare great gap, both sides, is beneficial to urethral secretions adequate drainage; Inlet opening urine in lowest order is beneficial to bladder is emptying clean, reduces the possibility of urinary infection rate and the urethral orifice enuresis; Prostatic catheter head end top, single chamber is oval, and bottom is slightly expanded and partly raised at patients with benign prostate hyperplasia neck of urinary bladder place, can guide catheter head to swash along the middle period of hyperplasia and enter bladder.

Description

A kind of single chamber air sac quasi-elliptic catheter

Technical field

The present invention relates to a kind of single chamber air sac quasi-elliptic catheter and single chamber air bag prostatic catheter, belong to medical auxiliary apparatus technical field.

Background technology

Before medical domain internal disease, surgical disease, obstetrical and gynecological disease, orthopaedic disease and urological diseases and operation, all need to insert catheter, indwelling catheter. Catheter is a kind of conventional medical auxiliary apparatus. For catheter, rubber, silica gel or plastic cement are made, and can insert bladder so that guiding urine flows out via patient's urethra. Catheter inserts after bladder, has an air bag or water pocket near catheter head end, with being difficult for deviating from the drainage part connection urinal collection urine of catheter so that catheter fixedly is stayed in bladder.

The shortcoming of existing catheter is: 1. catheter is rounded, and normal person's urinary catheter collar extension is longitudinal slot shape (1 font), prostatic urethra lower wall is circular-arc, upper wall is connected to people's prefix (∧), patients with benign prostate hyperplasia prostatic urethra becomes 1 font, due to catheter shape and human urethra shape inconsistent, so cause patient's discomfort, especially patients with benign prostate hyperplasia when circular catheter dilating urethra wall when inserting; One of 2. seamless between circular catheter and urethra, urethra endocrine can not adequate drainage goes out externally, easily causes urinary infection, epididymis, orchitis, or even the reason of later possible generation ankylurethria; 3. rounded after air bag water-filling or inflation, compressing trigone of urinary bladder, causes cystospasm, and patient occurs that frequent micturition, urgent urination, lower abdomen suppress swollen discomfort; 4. after inlet opening is relatively leaned on, especially in air bag after water filling, air bag is larger, and inlet opening is more stretched in bladder, and during band catheter, in bladder, urine can not emptying, causes urinary infection, is also patient's one of urethral orifice enuresis reason in the time of band catheter cystospasm; 5. double channel foley balloon indwelling catheter, tail end becomes forked, has both wasted material, after the work intracavity operation that has sheath completes, can not put into double lumen catheter again, puts into rear working sheath and can not extract. Need clinically to cut the divergent ends toward air bag water filling. At this moment air bag is useless, can not fix catheter, can not hemostasis by compression; 5. double channel foley balloon indwelling catheter head end is straight, obviously outstanding in the hyperplasia of prostate middle period, is difficult for inserting in bladder when bladder neck is raised.

Summary of the invention

The object of the invention is to overcome the defect of existing catheter, a kind of single chamber air sac quasi-elliptic catheter is provided, the form of described catheter and human urethra collar extension, prostatic urethra form are close, not only smoothly be beneficial to insertion urethra, be beneficial to urethral secretions adequate drainage, reduce urinary infection, and patient brings sense of discomfort obviously to alleviate.

For achieving the above object, the technical scheme adopting is: a kind of single chamber air sac quasi-elliptic catheter, comprise catheter body, air bag, ventilation capsule pipeline and anti back-flow valve, it is characterized in that: the radial section of described catheter body is class ellipse, the head end end of described body is oblate ellipsoid shape protrudes, and described class major axis oval and described oblate ellipsoid shape is longitudinal; The head end first half of described body is equipped with air bag, and the tail end top of described body joins with anti back-flow valve, between described air bag and described anti back-flow valve, is connected by the ventilation capsule pipeline being placed in described body; The head end end of described body is equipped with multiple inlet openings.

The radial section ovalize of described body.

The below, head end end of described body is equipped with inclined-plane from front to back, axially described in vertical section, between the sideline on inclined-plane and the axis of described body, is α angle. Described α angle is 20 °～60 °.

The radial section of described body head end is class ellipse, first half ovalize, and Lower Half is expanded outwardly.

Described body tail end top is equipped with tail fin shape projection, and described anti back-flow valve is placed in the tail end of tail fin.

In described inlet opening, have at least an inlet opening shelter to state longitudinal low side of body head end.

Good effect of the present invention is: 1. catheter end is level and smooth, and the oval catheter form of class approaches orificium urethrae externum, 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 hyperplasia of prostate; 2. major axis is that between the oval catheter of longitudinal class and urethra, You compare great gap, both sides, is beneficial to urethral secretions adequate drainage; 3 catheter head end inlet openings, at lowest order, are beneficial to the interior urine of bladder emptying clean, reduce the possibility of urinary infection rate and the urethral orifice enuresis; 4. air bag is attached to the first half of catheter: after air bag is full, both played the effect of fixing catheter at bladder upper wall, and do not stimulated again trigone of urinary bladder, and caused that the probability of cystospasm obviously reduced; The single not bifurcated of 5 catheter tail end, after having performed the operation, can directly insert single chamber Foley catheter in working sheath, extracts working sheath, full air bag not only can fix catheter, but also can hemostasis by compression; 6. prostatic catheter head end top, single chamber is oval, bottom is slightly expanded and is partly raised at patients with benign prostate hyperplasia neck of urinary bladder place, can guide catheter head to swash along the middle period of hyperplasia and enter bladder, avoid current double channel foley balloon indwelling catheter head end to withstand on the upper defect that is difficult for inserting bladder of middle period of hyperplasia.

Brief description of the drawings

Below in conjunction with brief description of the drawings and detailed description of the invention, the invention will be further described.

Fig. 1 is list of the present invention chamber air sac quasi-elliptic catheter structural representation;

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 schematic diagram of single chamber air sac quasi-elliptic catheter air bag;

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 the mono-chamber of Fig. 5 air bag prostatic catheter body cephalic par B-B schematic cross-section.

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

Detailed description of the invention

Fig. 1, Fig. 2 are respectively list of the present invention chamber air sac quasi-elliptic catheter structural representation and body cephalic par A to oblate ellipsoid shape structural representation, and Fig. 3, Fig. 4 are that the full status architecture schematic diagram of list of the present invention chamber air sac quasi-elliptic catheter air bag and body cephalic par A are to oblate ellipsoid shape structural representation. From diagram, a kind of single chamber air sac quasi-elliptic catheter, comprise catheter body 5, air bag 2, ventilation capsule pipeline 3 and anti back-flow valve 4, it is characterized in that: the radial section of described catheter body 5 is class ellipse, the head end end of described body 5 is oblate ellipsoid shape protrudes, and described class major axis oval and described oblate ellipsoid shape is longitudinal; The head end first half of described body 5 is equipped with air bag 2, and the tail end top of described body 5 joins with anti back-flow valve 4, between described air bag 2 and described anti back-flow valve 4, is connected by the ventilation capsule pipeline 3 being placed in described body 5; The head end end of described body 5 is equipped with multiple inlet openings 1.

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

Fig. 5, Fig. 6 show respectively list of the present invention chamber air bag prostatic catheter structural representation and single chamber air bag prostatic catheter body cephalic par B-B schematic cross-section. Air bag prostatic catheter body 5 cephalic par B-B cross sections, single chamber are class ellipse, first half ovalize, and Lower Half is outwards expanded and is protruded 6. The below, head end end of described body 5 is equipped with inclined-plane from front to back, axially described in vertical section, between the sideline OD on inclined-plane and the axes O C of described body, angle is α angle (Fig. 5), when insertion, there is climbing effect on the inclined-plane of catheter front end, is conducive to catheter and inserts use.

Described α angle is 20 °～60 °.

Bottom is slightly expanded and is partly raised at patients with benign prostate hyperplasia neck of urinary bladder place, can guide catheter head to swash along the middle period of hyperplasia and enter bladder, has avoided current double channel foley balloon indwelling catheter head end to withstand on the upper defect that is difficult for inserting bladder of middle period of hyperplasia.

Described body 5 tail end tops are equipped with tail fin shape projection, and described anti back-flow valve 4 is placed in the tail end of tail fin, and charge operation is very convenient.

In described multiple inlet opening 1, have an inlet opening 1 ' occupy longitudinal low side of described body 5 head ends at least, be beneficial in bladder urine emptying clean, reduce the possibility of urinary infection rate and the urethral orifice enuresis.

Claims

1. single chamber air sac quasi-elliptic catheter, comprise catheter body, air bag, ventilation capsule pipeline and anti back-flow valve, it is characterized in that: the radial section of described catheter body is class ellipse, the head end first half ovalize of described body, Lower Half is expanded outwardly; End is oblate ellipsoid shape protrudes, and described class major axis oval and described oblate ellipsoid shape is longitudinal; The head end first half of described body is equipped with air bag, and the tail end top of described body joins with anti back-flow valve, between described air bag and described anti back-flow valve, is connected by the ventilation capsule pipeline being placed in described body; The head end end of described body is equipped with multiple inlet openings.

2. a kind of single chamber air sac quasi-elliptic catheter according to claim 1, is characterized in that: the radial section ovalize of described body.

3. a kind of single chamber air sac quasi-elliptic catheter according to claim 1, is characterized in that: the below, head end end of described body is equipped with inclined-plane from front to back, axially described in vertical section, between the sideline on inclined-plane and the axis of described body, is α angle.

4. a kind of single chamber air sac quasi-elliptic catheter according to claim 3, is characterized in that: described α angle is 20 °～60 °.