CN2539526Y - Super-soft spiral urethral catheter with core - Google Patents

Abstract

The utility model relates to a ultra-soft type spiral catheter with an over-core, comprising an ultra-soft type spiral catheter and an over-core. The in vivo part of the catheter has super-softness and the softness exceeds the catheter of prior art. An opening is arranged at lateral face of the end part of the in vivo part. In vitro part of the catheter is spiral-shaped, easy to be extended and bent. The male-type catheter is characterized by relatively long in vivo part. The cover-core has propulsion property, used to inset the catheter into bladder through urethra. The overall design can to a great extern relieve the suffering and impairment caused to the patient when the catheter is applied to the patient.

Description

The catheter of super-soft helical form band cover core

Technical field:

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

Background technology:

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 ", and the anti sag property of soft type catheter and metallic sheath core is combined, and was good to urethral stricture patient's urethral catheterization effect, apply for patent, obtained patent right.The patent No.: 962285919.

The patient narrowless to urethra implements urethral catheterization, is the urethral catheterization seen at most clinically of medical treatment, is 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, and as the part long (being generally 1-3cm) that catheter enters bladder, 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 outer body of catheter be subjected to tractive or swing, this tractive or oscillatory forces, can be directly delivered to catheter inserts on the part of urethra and bladder, cause collision, the friction of catheter, cause the damage of bladder inner membrance 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, often 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, the urinary catheter in art is the Therapeutic Method that medical treatment is implemented clinically often.The prior art catheter that is applied to the urinary catheter in art mostly is the water-bag type catheter.It is characterized in that, at the leading portion of catheter water pocket is set, after catheter entered bladder and derives urine, the operator is water filling in water pocket, and water pocket is expanded, and forms the cryptomere placeholder at intravesical, deviates from bladder so as to stopping catheter.Clinical practice proves, the water-bag type catheter has also possessed the comparatively serious damage to urethra and bladder having when the catheter of stopping deviates from.Main performance is: the leading portion of (one) water-bag type catheter is thicker, and intubate is effort, and is heavier to the stimulation and the damage of urethra.Especially be applied to the andropathy man-hour, its pain and damage are more obvious.(2) after the water pocket water filling, the cryptomere placeholder in intravesical forms plays seat patient, stands up or during out-of-bed activity, water pocket directly contacts, rubs with the bladder inner membrance in the intravesical activity, causes damage.(3) due to illness activity of people's body or nursing procedure etc. are former thereby by vertical tractive or laterally during tractive when the outer body of catheter, and traction force directly transmits on the body inner segment of catheter and water pocket, impacts and rubs to urinary catheter and bladder.(4) come exogenic traction force to make water pocket to external extruding, pressure is directly done on the sphincter that is used in the bladder urine outlet, causes the damage of sphincter vesicae.Sometimes after occurring water-bag type catheter tube drawing clinically, the secondary urinary incontinence usually is the objective sign of sphincter damaged.Five, above drawback all increases the possibility of urinary system infection, and the report of secondary urethral stricture is also arranged.In order to overcome the above drawback, I have developed " ultra-soft folds the mantle core type catheter " again, have obtained patent right.The patent No.: 98214168.8.One of its feature is that external section of catheter is rugosity.This external section collapsed shape makes external section to have and extend performance and flexible performance preferably.When this catheter of application is done the urinary catheter in art, can efficient buffer and dissolve the traction force that acts on the catheter, keep the stability of catheter in urethra and intravesical position, effectively give when preventing the urinary catheter in art, the catheter of Chu Xianing occurs because of the situation that is pulled bladder and urethra often.Often be pulled the damage that causes urethra and bladder because of external section of catheter when simultaneously also effectively alleviating the urinary catheter in art.

Summary of the invention:

Find that after further study the folding appearance that " ultra-soft folds the mantle core type catheter " is external section is easier to elongation and crooked not as good as spiral appearance, therefore, provide a kind of " catheter of super-soft helical form band cover core ".

This utility model takes following technical scheme to realize, it is made of super-soft helical form catheter (1) and cover core (2).It is characterized in that super-soft helical form catheter (1) is divided into variform body inner segment (3) and external section (4).Body inner segment (3) is made the soft degree above the prior art catheter.Two urine filling mouths (5) and (6) are established in the top of body inner segment (3).The end profile of body inner segment (3) is established an opening (7), and opening (7) is made can be for the device of switch.Because male urethra is grown (the long 17-20cm of male urethra.The long 3-4.5cm of female urethra), therefore, the length of the body inner segment (3) of men's super-soft helical form catheter (1) is obviously greater than the length of female catheter body inner segment (3).Whereby, catheter is divided into men's and lady's two kinds.The pipeline coiling shape of external section (4).With body inner segment (3) direct or indirect be connected perforation.Cover core (2) is with metal or other have suitable hardness and flexible material is made, and has good propulsive performance.Body inner segment (3) 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 is because of possessing independent function by urethra insertion bladder, so design hardness is bigger.This utility model is to rely on the anti sag property of cover core (2) that catheter is inserted bladder by urethra, and therefore, the body inner segment (3) of this utility model catheter (1) can have the flexibility above the soft type catheter of prior art.When coating lubricant and insert bladder, have less zest, damaging and extruding property with the body inner segment (3) of this ultra-soft.Two, the helical form appearance of external section (4) of the present utility model; have and be easy to characteristics crooked and elongation more; when the push-and-pull of tractive that is subjected to longitudinal force or cross force; the elongation and the bending of the spiral moulding of external section (4) at first appear; efficient buffer and dissolve the transmission to body inner segment (3) of longitudinal force or horizontal force, protection mucous membrane of urethra and bladder inner membrance are avoided tractive sexual stimulus and damage.And effectively keep the stability of body inner segment (3) in urethra and intravesical position.This utility model, utilize the supersoft of body inner segment (3) and the spiral moulding of external section (4), when being used for doing the urinary catheter in art, having and keep the stability of body inner segment (3) in urethra and intravesical position, prevent that catheter from deviating from, and have the good effect that alleviates the painful and damage of patient simultaneously.

Description of drawings:

This Figure of description is a part cross-sectional schematic of the present utility model.Wherein (1) is super-soft helical form catheter.(2) be the cover core, (3) are the body inner segments of super-soft helical form catheter (1).(4) be external section of super-soft helical form catheter (1), (5) and (6) are respectively two urine filling mouths of body inner segment (3) front end, and (7) are another openings of body inner segment (3) end profile.

The specific embodiment:

Critical piece super-soft helical form catheter of the present utility model (1) is divided into variform body inner segment (3) and external section (4).Body inner segment (3) has the flexibility above the prior art catheter.Body inner segment (4) shape moulding in the shape of a spiral.When the urinary catheter in art, only need after finishing the catheter intubate, catheter is carried out simple external fixation, can and dissolve the effect of traction force by the buffering of external section (4), effectively keep the stability of catheter, reach and prevent that catheter from deviating from and alleviate catheter causes damage to urethra and bladder purpose in urethra and intravesical position.Super-soft helical form catheter of the present utility model (1) has lost the hardness and the propulsive performance of the independent intubate of prior art catheter.During clinical intubate, at first will overlap core (2) and insert in the tube chamber of body inner segment (3),, body inner segment (3) be inserted bladder by urethra, withdraw from cover core (2) then, finish the catheter intubation by the anti sag property of cover core (2) by opening (7).Cover core (2) is by metal or other have suitable hardness and flexible material is made core pipe, plug or Periostracum Serpentis tubulose.Consider the notable difference of men and women's urethra on length, so the length of men's body inner segment (3) is greater than the length of lady's body inner segment (3).And this utility model catheter is divided into men's and lady's two kinds whereby.

Claims (5)

1, the catheter of super-soft helical form band cover core is made of super-soft helical form catheter (1) and cover core (2), it is characterized in that ultra-soft helical form catheter is made up of variform body inner segment (3) and external section (4) two parts.The top of body inner segment (3) is provided with two urine filling mouths (5) and (6).The end profile of body inner segment (3) is provided with opening (7), and body inner segment (3) can be inserted or withdraw to cover core (2), and both are loose fit.

2, according to the catheter of the described super-soft helical form of claim 1 band cover core, it is characterized in that said body inner segment (3) has the flexibility above the prior art catheter.The male is longer with body inner segment (3) than the women with body inner segment (3).

3, according to the catheter of the described super-soft helical form of claim 1 band cover core, the pipeline that it is characterized in that said external section (4) is a helical form, with body inner segment (3) direct or indirect be connected perforation.

4, according to the catheter of the described super-soft helical form of claim 1 band cover core, it is characterized in that the opening (7) of said body inner segment (3) end profile, making can be for the device of switch.

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 catheter of the described super-soft helical form of claim 1 band cover core.