CN2347608Y - Foldable urvnary catheter - Google Patents

Abstract

The utility model relates to an ultra-soft folding urethral catheter with a sleeve core type, which is composed of a folding urethral catheter and a sleeve core. The urethral catheter is divided into a segment in a body and a segment out of the body; the segment out of the body is composed of an annular framework and an ultra-soft layer which is coated on the periphery of the annular framework. The segment in the body of the urethral catheter which is used for men is longer; the segment out of the body of the urethral catheter has elasticity and flexibility. Two urine-entering openings are arranged on the top segment of the urethral catheter; the sleeve core has propulsion performance to cause the urethral catheter to be inserted into a bladder through the urethra. The overall design of the utility model causes pain and damage of patients to be relieved largely when the urethral catheter is used for the patients.

Description

Ultra-soft folds the mantle core type catheter

This utility model belongs to medical apparatus and instruments, relates to medical catheter.

Using the catheter per urethra and insert bladder, is that the Therapeutic Method that often adopts is gone up in medical treatment.Catheter at present commonly used clinically can be divided into two kinds of the soft type catheter of plastic polymer and the strong type catheters of metal matter with its soft or hard degree.When the patient's who is applied to urethral stricture urethral catheterization, there are many drawbacks, therefore, I had once developed " catheter of band cover core ", the anti sag property of soft type catheter and metallic sheath core is organically combined, urethral catheterization effect to the urethral stricture patient is good, has applied for patent, has obtained patent right.The patent No.: 96228591.9.

The patient narrowless to urethra implements urethral catheterization, is the urethral catheterization that medical treatment is seen at most clinically.Be common in: the taking of critical patient's urine monitoring, bladder originality urine retention, urine specimen, cystography and bladder irrigation etc.How these patients do not exist urethral stricture, use the soft type catheter of plastic polymer independence intubate, can finish urethral catheterization or other treatment purpose.What here need to emphatically point out is, further discover, use urethral catheterization and urinary catheter in art that the soft type catheter of plastic polymer independence intubate is finished, there is following drawback: one, present employed soft type catheter with independent intubate function, when possessing independent intubate function, also just possessed corresponding hardness and propulsive performance, from the tight connecting of the tender and lovely mucous membrane of urethra of softness, insert in the past with the soft type catheter that possesses this hardness, not only painful unbearably bitter, also often cause the damage of mucous membrane of urethra.Two, with after the above-mentioned catheter derivation urine, Bladder Volume is dwindled, enter the part long (being generally 1-3cm) of bladder as catheter, this long part may be touched the bladder inner membrance, especially when the urinary catheter in art, the variation of patient posture or other reasons, often make the external part of catheter be subjected to tractive and swing, this tractive and oscillatory forces, can be directly delivered to catheter inserts on the part of urethra and bladder, cause collision, the friction of catheter, the damage of bladder inner membrance occurs mucous membrane of urethra and bladder inner membrance.Medical treatment clinically, the urinary catheter in patient not existing under constitutional urinary system infection or the hemorrhage situation, in urine routine, finds more erythrocyte, leukocyte.This is the objective indicator that the bladder inner membrance sustains damage.When three, doing the urinary catheter in art with above-mentioned catheter, catheter continues to exist in urethra, and therefore mucous membrane of urethra is squeezed, and ischemia, degeneration, sepage, necrosis are common situations.Especially at the knee of male urethra, mucous membrane of urethra is easier to be oppressed by the straight and upright property of above-mentioned catheter, and ischemia, necrosis are more outstanding.Four, above drawback all increases the possibility of urinary system infection, and the report of secondary urethral stricture is also arranged.Five, urine filling mouth is easy to be adsorbed on the bladder inner membrance, influences the discharge of latter end urine: be communicated with hanging in sick bed following time when catheter and urinal are sealed, the proportion that the dirty siphon power of urine equals urine multiply by the vertical dimension of catheter urine filling mouth to urinal.During less than the dirty siphon power of urine, the urine filling mouth of catheter is easy to be adsorbed on the softish bladder inner membrance, occurs urine often and discharges the situation of being obstructed as intravesical pressure.

The purpose of this utility model is to overcome above shortcoming, and a kind of " ultra-soft folds the mantle core type catheter " is provided.

This utility model takes following technical scheme to realize, it is made of folding catheter (1) of ultra-soft and cover core (2), it is characterized in that ultra-soft folds catheter (1) and is divided into the different body inner segment (3) of structure and external section (4).Because male urethra is obviously grown (the long 17-20cm of male urethra.The long 3-4.5cm of female urethra), be similar to 5 times of female urethra length, therefore, the male is with the length of the body inner segment (3) of the folding catheter (1) of ultra-soft, obviously greater than the length of women with urethral catheterization body inner segment (3).Whereby, catheter is divided into two kinds on male type and women type, body inner segment (3) constitutes with the ultra-soft layer (8) of cyclic skeleton (7) and wrapping frame.Cyclic skeleton (7) is harder with quality, has excellent toughness and elastic glue and material such as moulds and make garden ring-type or helical form, is between ring and the ring that the collimation continuity is connected or the helical form connection.The periphery of cyclic skeleton (7) is wrapped up soft degree and the ultra-soft layer (8) that material is made, the smooth surface of ultra-soft layer (8) such as is moulded greater than the glue of the soft degree of existing catheter.External section (4) that ultra-soft folds catheter (1) generally are designed to one section, also can set up two, three sections standby, material such as mould with glue and do angularity convex concave tubular body.That is to say that the tube wall of external section (4) is collapsible shape.With body inner segment (3) direct or indirect be connected perforation.The top of body inner segment (3) is provided with the different urine filling mouth of both direction (5) and (6).Ultra-soft folds catheter (1) and does not possess independently intubate function, need the folding catheter (1) of ultra-soft be inserted bladder by urethra overlapping inserting and advance down of core (2), finishes urethral catheterization or urinary catheter in art.Cover core (2) is with metal or other have suitable hardness and flexible material is made, and has good propulsive performance.Catheter (1) can be inserted and withdraw to cover core (2), and both are loose fit.

The utlity model has following advantage and good effect: one, owing to the tender and lovely rapid wear of cell tissue of forming mucous membrane of urethra and bladder inner membrance, so catheter should have as far as possible bigger flexibility.The catheter of prior art independent inserts the function of bladder by urethra because of possessing, so design hardness is bigger, to be the anti sag property that relies on cover core (2) insert bladder with the body inner segment of catheter to this utility model.Therefore the top layer of the body inner segment (3) of this utility model catheter (1) has the soft degree that surpasses existing catheter, smooth surface.When coating lubricant insertion bladder, have less zest, damaging and extruding property with the body inner segment (3) of this ultra-soft.Two, the cyclic skeleton (7) of body inner segment of the present utility model (3) promptly has the effect of keeping the unobstructed property of tube chamber, has less straight and upright property again, is easy to bending, and is when doing the urinary catheter in art, slight to the compressing of the knee of male urethra.Three, two urine filling mouths being provided with of the top section of this utility model body inner segment (3), effectively avoided single urine filling mouth the urine filling mouth adsorption phenomena that may occur, help the discharge of latter end urine.Four, the collapsible appearance of external section (4) tube wall of the present utility model; have the characteristics crooked and elongation that are easy to; when the push-and-pull of tractive that is subjected to longitudinal force or cross force; the elongation and the bending of the foldable structure of body inner segment (4) at first appear; buffering or dissolve the transmission of longitudinal force or horizontal force to body inner segment (3); protection mucous membrane of urethra and bladder inner membrance are avoided tractive sexual stimulus and damage, and have effectively kept the stability of body inner segment (3) in urethra and intravesical position.This positive role of external section (4), the most remarkable when the urinary catheter in art, standby external section (4) can be connected perforation in case of necessity, in order to strengthen the effect that cushions or dissolve traction force.

This Figure of description, it is the cross-sectional schematic of this utility model, wherein (1) is the folding catheter of ultra-soft, (2) be the cover core, (3) be the body inner segment of the folding catheter (1) of ultra-soft, (4) are external sections of the folding catheter (1) of ultra-soft, and (5) and (6) are respectively two urine filling mouths of body inner segment (3) leading portion, (7) be the cyclic skeleton of body inner segment (3), (8) are the ultra-soft skins of body inner segment (3).

Below in conjunction with embodiment, this utility model is described further.Critical piece ultra-soft of the present utility model folds catheter (1), is divided into the different body inner segment (3) of structure and external section (4), and is obviously different with the integrated structure of existing catheter.Body inner segment of the present utility model (3) is made of the ultra-soft skin (8) of cyclic skeleton (7) and periphery parcel, cyclic skeleton (7) material such as is moulded with hardness and the bigger glue of toughness and is made, preferably being collimation or helical form between ring and the ring continues and is connected, the glue that ultra-soft layer (8) surpasses the soft degree of existing catheter by soft degree material parcel cyclic skeleton (7) such as is moulded and is shaped smooth surface.When hanging down, also cyclic skeleton (7) can be simplified with ultra-soft skin (8) and be become single super-soft body inner segment (3) as the technological level of manufacturer.When clinical manipulation, when the top layer of body inner segment (3) is coated lubricant and inserted urethra and enter bladder, has abirritant effect equally.External section (4) of the present utility model with slick tube wall inside and outside the garden tubulose of existing catheter, change system into horn shape convex concave tube wall.The summit of its salient angle is at outer wall, and the summit of re-entrant angle is at inwall, and between salient angle and the re-entrant angle, by a unified limit, continuity connects into collapsible tube wall.When external section (4) of the present utility model are subjected to the external force tractive, the variation of folding angle at first appears, produce elongation or crooked, the power that affacts on external section is cushioned and dissolve.Ultra-soft of the present utility model folds catheter (1) and has lost hardness and the propelling property that existing catheter independently carries out the catheter intubate, when carrying out the operation of catheter intubate, at first metallic sheath core (2) is inserted in the tube chamber of the folding catheter (1) of ultra-soft, anti sag property by cover core (2), the body inner segment (3) of the folding catheter (1) of ultra-soft is inserted bladder by urethra, withdraw from the cover core then, finish urethral catheterization.(2) can by metal or other have suitable hardness and flexible material is made core pipe, plug or Periostracum Serpentis tubulose for the cover core.The top section of body inner segment (3) is established the different urine filling mouth of both direction (5) and (6).Consider the greatest differences of men and women's urethra on length, so the male adds that with the greatest length that the length of body inner segment (3) equals male urethra substantially catheter inserts the length of bladder.The women is identical with the account form of body inner segment (3) with the male with the length calculation mode of body inner segment (3).And whereby this utility model is divided into two kinds on male type and women type.

Claims (5)

1, the folding mantle core type catheter of ultra-soft, it is made of folding catheter (1) of ultra-soft and cover core (2), it is characterized in that ultra-soft folds catheter (1) and is made up of with external section (4) two parts the different body inner segment (3) of structure, the top section of body inner segment (3) is provided with two urine filling mouths (5) and (6), catheter (1) can be inserted or withdraw to cover core (2), and both are loose fit.

2, according to the folding mantle core type catheter of the described ultra-soft of claim 1, it is characterized in that said body inner segment (3) is made up of the ultra-soft layer (8) of cyclic skeleton (7) and periphery parcel, the ultra-soft laminar surface is smooth, and the male is longer with body inner segment (3) than the women with the body inner segment (3) of the folding catheter (1) of ultra-soft.

3, according to the folding mantle core type catheter of the described ultra-soft of claim 1, the tube wall that it is characterized in that said external section (4) is folding shape, with body inner segment (3) direct or indirect be connected perforation, external section (4) are generally one section, also can set up two, three sections standby, when urinary catheter in, external section (4) can suitably extend.

4,, it is characterized in that two urine filling mouths (5) of the folding urethral catheterization body inner segment (3) of said ultra-soft top section are different with the direction of (6) according to the folding mantle core type catheter of the described ultra-soft of claim 1.

5,, it is characterized in that said cover core (2) available metal or other materials make plug, core pipe or Periostracum Serpentis tubulose according to the folding mantle core type catheter of the described ultra-soft of claim 1.

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