CN110721391A - Disposable ureter catheterization support tube - Google Patents
Disposable ureter catheterization support tube Download PDFInfo
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- CN110721391A CN110721391A CN201910948384.2A CN201910948384A CN110721391A CN 110721391 A CN110721391 A CN 110721391A CN 201910948384 A CN201910948384 A CN 201910948384A CN 110721391 A CN110721391 A CN 110721391A
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- bladder
- kidney
- stent
- stent tube
- ureteral catheterization
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
- A61M27/008—Implant devices for drainage of body fluids from one part of the body to another pre-shaped, for use in the urethral or ureteral tract
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0017—Catheters; Hollow probes specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M2025/0056—Catheters; Hollow probes characterised by structural features provided with an antibacterial agent, e.g. by coating, residing in the polymer matrix or releasing an agent out of a reservoir
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Urology & Nephrology (AREA)
- Epidemiology (AREA)
- Ophthalmology & Optometry (AREA)
- Otolaryngology (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a disposable ureteral catheterization stent tube. The ureteral catheterization support tube comprises a kidney end, a support tube body and a bladder end, the hardness of the ureteral catheterization support tube is sequentially reduced by the kidney end, the support tube body and the bladder end, the kidney end and the bladder end are respectively bent in opposite directions to form arc shapes, and the kidney end and the bladder end are respectively provided with through holes for urine to pass in and out the support tube body. The invention can reduce the friction between the arc-shaped structure at the bladder end and the bladder mucous membrane, reduce the stimulation to the bladder and improve the comfort of patients.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable ureteral catheterization stent tube.
Background
The disposable ureteral catheterization bracket tube becomes an indispensable part of the urology surgery and is widely applied to the clinic, and comprises the following components: (1) after the open surgery, such as ureterotomy stone extraction, pyeloplasty, uretero-vesical reimplantation; (2) benign or malignant obstruction leads to hydronephrosis; (3) damage to the ureter; (4) intractable renal colic caused by malignant attack of ureteral calculus; (5) postgestational hydronephrosis, postgestational renal colic; (6) after intracavitary lithotripsy and lithotomy, etc. The indwelling ureteral catheterization stent tube can keep the smooth drainage of an upper urinary tract, relieve obstruction, reduce pain on the waist and the back, reduce infection, prevent ureteral stenosis and facilitate the discharge of broken stones. Although the prior ureteral catheterization stent tube is continuously improved in preparation process or materials, clinically, a large number of patients still have symptoms such as pain in urination, visual hematuria, pain in the waist and back during urination and the like caused by the stimulation of foreign matters on the ureter and the bladder after the ureteral catheterization stent tube is kept, so that the ureteral catheterization stent tube needs to be improved, the incidence rate of the uncomfortable symptoms is further reduced, and the comfort and the operation treatment effect after the ureteral catheterization stent tube is kept in the patient are improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a disposable ureteral catheterization support tube.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a disposable ureteral catheterization support tube comprises a kidney end, a support tube body and a bladder end, wherein the hardness of the ureteral catheterization support tube is sequentially reduced by the kidney end, the support tube body and the bladder end, the kidney end and the bladder end are respectively bent in opposite directions to form arc shapes, and the kidney end and the bladder end are respectively provided with through holes for urine to pass in and out of the support tube body.
The ureteral catheterization stent has high hardness, is convenient to implant, can easily cause unnecessary injury to a certain degree of a human body, has small foreign body stimulation of the ureteral catheterization stent with low hardness, can be difficult to implant if the hardness is too low, or is easy to shift after being detained, therefore, the hardness of the ureteral catheterization stent tube is sequentially reduced from the kidney end, the stent tube body and the bladder end, the hardness of the kidney end is higher, the ureteral catheterization stent tube is beneficial to implantation and fixation of the ureteral catheterization stent tube, the hardness is gradually reduced until the bladder end, thereby reducing the stimulation of the ureteral catheterization bracket tube to the bladder, improving the comfort level of the patient after the ureteral catheterization bracket tube is left, simultaneously, the hardness of the support tube body is gradually reduced from the end close to the kidney to the end close to the bladder, so that the phenomenon that the support tube body is easily broken due to too large hardness difference among the kidney end, the support tube body and the bladder end can be effectively avoided.
Preferably, the shore hardness of the kidney end is 45-65A, the shore hardness of the stent tube body is 20-55A, and the shore hardness of the bladder end is 10-35A, so that the ureteral catheterization stent tube is beneficial to implantation and fixation, the stimulation to the bladder is reduced, the comfort degree of a patient after the ureteral catheterization stent tube is reserved is improved, the tube bodies have high tensile resistance, and the breakage is not easy to occur.
Preferably, the Shore hardness of the kidney end is 45-50A, the Shore hardness of the stent tube body is 25-30A, and the Shore hardness of the bladder end is 10-20A, so that the ureteral catheterization stent tube is favorably implanted and fixed, the stimulation to the bladder is reduced, and the comfort level of a patient after the ureteral catheterization stent tube is left is improved.
Preferably, the kidney end, the stent tube body and the bladder end are made of medical polymer materials, preferably polyurethane.
Preferably, the external diameter of the ureteral catheterization support tube is reduced by a kidney end, a support tube body and a bladder end in sequence. The ureteral catheterization support tube becomes thinner from the kidney end to the bladder end, so that the stimulation of the ureteral catheterization support tube to the bladder is further reduced, and the comfort level of a patient is improved.
Preferably, the outer walls of the kidney end, the stent tube and the bladder end are provided with an anti-crusting coating. More preferably, the anti-crusting coating is a polymeric hydrophilic coating or a silicon-containing hydrophilic coating. The ureteral catheterization stent tube is left in a body for a long time, organic and inorganic salts and biological macromolecules are easily deposited on the surface of the ureteral catheterization stent tube to form hard crusts, so that the difficulty in drawing the ureteral catheterization is caused, and anti-crusting coatings, such as polymer hydrophilic coatings or silicon-containing hydrophilic coatings like polyvinylpyrrolidone coatings, are arranged on the outer walls of the kidney end, the stent tube body and the bladder end, so that the hydrophilicity and the surface smoothness of the stent tube are improved, and the crusting is reduced.
Preferably, the surface roughness Ra of the anti-crusting coating is less than 0.1 μm, so that the surface smoothness of the stent tube is improved.
Preferably, the outer wall of the bladder end is provided with a groove, and a traction wire is wound on the groove. When the bladder end is displaced, the bladder end is pulled to the accurate position by the traction wire.
Preferably, the traction wire is made of a flexible material, so that the stimulation of the traction wire to the bladder is further reduced.
Compared with the prior art, the invention has the beneficial effects that:
the ureteral catheterization support tube comprises a kidney end, a support tube body and a bladder tube, the hardness of the ureteral catheterization support tube is sequentially reduced by the kidney end, the support tube body and the bladder tube, the friction between a circular arc structure of the bladder end and a bladder mucous membrane is reduced, the occurrence of bladder irritation and hematuria complications is reduced, and the comfort level of a patient is improved.
Drawings
FIG. 1 is a schematic structural view of a ureteral catheterization stent tube of the present invention;
FIG. 2 is a schematic structural view of a ureteral catheterization stent tube of the present invention;
in the figure, 1-kidney end, 2-stent tube, 3-bladder end, 4-through hole, 5-groove and 6-traction wire.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples. It will be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the examples, the experimental methods used were all conventional methods unless otherwise specified, and the materials, reagents and the like used were commercially available without otherwise specified.
A disposable ureteral catheterization stent tube is shown in figure 1 and comprises a kidney end 1, a stent tube body 2 and a bladder end 3, wherein the hardness of the ureteral catheterization stent tube is sequentially reduced by the kidney end 1, the stent tube body 2 and the bladder end 3, the kidney end 1 and the bladder end 3 are respectively bent in opposite directions to form circular arcs, and through holes 4 for urine to enter and exit the stent tube body 2 are formed in the kidney end 1 and the bladder end 3.
The ureteral catheterization stent tube has the advantages that the hardness of the ureteral catheterization stent tube is too high, so that unnecessary injury to a certain degree of a human body is easily caused, foreign matter stimulation of the ureteral catheterization stent tube with low hardness is low, if the hardness is too low, implantation is difficult, or the ureteral catheterization stent tube is easy to shift after being indwelling, therefore, the hardness of the ureteral catheterization stent tube is sequentially reduced from a kidney end, a stent tube body and a bladder end, the hardness of the kidney end is high, implantation and fixation of the ureteral catheterization stent tube are facilitated, the hardness is reduced to the bladder end, stimulation of the ureteral catheterization stent tube to the bladder is reduced, the comfort level of a patient after the ureteral catheterization stent tube is indwelling is improved, meanwhile, the hardness of the stent tube body is gradually reduced from the end close to the bladder end, and the phenomenon that the kidney end, the stent tube body and the bladder end are.
According to the invention, the Shore hardness of the kidney end 1 is 45-65A, the Shore hardness of the stent tube body 2 is 20-55A, and the Shore hardness of the bladder end 3 is 10-35A, so that the implantation and fixation of the ureteral catheterization stent tube are facilitated, the stimulation to the bladder is reduced, and the comfort level of a patient after the ureteral catheterization stent tube is left is improved.
According to the invention, the Shore hardness of the kidney end 1 is 45-50A, the Shore hardness of the stent tube body 2 is 25-30A, and the Shore hardness of the bladder end 3 is 10-20A, so that the implantation and fixation of the ureteral catheterization stent tube are facilitated, the stimulation of the stent tube to the bladder is reduced, the comfort degree of a patient after the ureteral catheterization stent tube is placed is improved, the tube body has high tensile resistance, and the breakage is not easy to occur.
In the present invention, the kidney end 1, the stent tube 2 and the bladder end 3 are made of medical polymer material, preferably polyurethane.
In the invention, the external diameter of the ureteral catheterization stent tube is reduced by a kidney end 1, a stent tube body 2 and a bladder end 3 in sequence. The ureteral catheterization support tube becomes thinner from the kidney end 1 to the bladder end 3, so that the stimulation of the ureteral catheterization support tube to the bladder is further reduced, and the comfort level of a patient is improved.
In the invention, the outer walls of the kidney end 1, the stent tube body 2 and the bladder end 3 are provided with an anti-crusting coating 5; more preferably, the anti-crusting coating 5 is a polymeric hydrophilic coating or a silicon-containing hydrophilic coating. The ureteral catheterization stent tube is left in a body for a long time, organic and inorganic salts and biological macromolecules are easily deposited on the surface of the ureteral catheterization stent tube to form hard crusts, so that the difficulty in drawing the ureteral catheterization is caused, and anti-crusting coatings, such as polymer hydrophilic coatings or silicon-containing hydrophilic coatings like polyvinylpyrrolidone coatings, are arranged on the outer walls of the kidney end, the stent tube body and the bladder end, wherein the thickness of the coatings is 10-40 mu m, so that the hydrophilicity and the surface smoothness of the stent tube are improved, and the crusting is reduced.
In the present invention, the surface roughness Ra of the anti-skinning coating is less than 0.1 μm, which improves the surface smoothness of the stent tube.
In the invention, as shown in fig. 2, the outer wall of the bladder end 3 is provided with a groove 5, and a traction wire 6 is wound on the groove 5. When the bladder end 3 is displaced, the bladder end 3 is pulled to the correct position by the traction wire 6.
In the invention, the traction wire 6 is made of a flexible material, so that the stimulation of the traction wire to the bladder is further reduced.
Example 1
The disposable ureteral catheterization stent tube comprises a kidney end, a stent tube body and a bladder end, wherein the hardness of the ureteral catheterization stent tube is sequentially reduced by the kidney end, the stent tube body and the bladder end, the kidney end is made of polyurethane, and the integral Shore hardness of the ureteral catheterization stent tube is 65A; the support tube body is made of polyurethane with 4 different hardness in sections, the Shore hardness of the support tube body from the end close to the kidney to the end close to the bladder is 55A, 50A, 45A and 40A in sequence, the bladder end is made of polyurethane integrally, the Shore hardness of the bladder end is 35A integrally, the kidney end and the bladder end are bent in opposite directions to form an arc respectively, and through holes for urine to enter and exit the support tube body are formed in the kidney end and the bladder end; the external diameter of the ureteral catheterization support tube is sequentially reduced from the kidney end, the support tube body and the bladder end, so that the stimulation to the bladder can be reduced.
Example 2
The disposable ureteral catheterization stent tube comprises a kidney end, a stent tube body and a bladder end, wherein the hardness of the ureteral catheterization stent tube is sequentially reduced by the kidney end, the stent tube body and the bladder end, the kidney end is made of polyurethane, and the integral Shore hardness of the ureteral catheterization stent tube is 50A; the support tube body is made of 3 kinds of polyurethane with different hardness in a segmented mode, the Shore hardness of the support tube body from the end close to the kidney to the end close to the bladder is 45A, 35A and 30A in sequence, the bladder end is made of polyurethane integrally, the Shore hardness of the bladder end is 20A integrally, the kidney end and the bladder end are bent in opposite directions to form an arc respectively, and through holes for urine to enter and exit the support tube body are formed in the kidney end and the bladder end respectively; the external diameter of the ureteral catheterization support tube is sequentially reduced from the kidney end, the support tube body and the bladder end, so that the stimulation to the bladder can be reduced.
Example 3
The disposable ureteral catheterization stent tube comprises a kidney end, a stent tube body and a bladder end, wherein the hardness of the ureteral catheterization stent tube is sequentially reduced by the kidney end, the stent tube body and the bladder end, the kidney end is made of polyurethane, and the integral Shore hardness of the ureteral catheterization stent tube is 45A; the support tube body is made of 3 kinds of polyurethane with different hardness in a segmented mode, the Shore hardness of the support tube body from the end close to the kidney to the end close to the bladder is 30A, 28A and 25A in sequence, the bladder end is made of polyurethane integrally, the Shore hardness of the bladder end is 20A integrally, the kidney end and the bladder end are bent in opposite directions to form an arc respectively, and through holes for urine to enter and exit the support tube body are formed in the kidney end and the bladder end; the external diameter of the ureteral catheterization support tube is sequentially reduced from the kidney end, the support tube body and the bladder end, so that the stimulation to the bladder can be reduced.
Example 4
The disposable ureteral catheterization stent tube comprises a kidney end, a stent tube body and a bladder end, wherein the hardness of the ureteral catheterization stent tube is sequentially reduced by the kidney end, the stent tube body and the bladder end, the kidney end is made of polyurethane, and the integral Shore hardness of the ureteral catheterization stent tube is 50A; the support tube body is made of 2 polyurethanes with different hardness in a segmented mode, the Shore hardness of the support tube body from the end close to the kidney to the end close to the bladder is 30A and 25A in sequence, the bladder end is made of polyurethane integrally, the Shore hardness of the bladder end is 10A integrally, the kidney end and the bladder end are bent in opposite directions to form an arc respectively, and through holes for urine to enter and exit the support tube body are formed in the kidney end and the bladder end; the external diameter of the ureteral catheterization support tube is sequentially reduced from the kidney end, the support tube body and the bladder end, so that the stimulation to the bladder can be reduced.
The ureteral catheterization support tube of the embodiment adopts the segmented hardness design, is favorable for implantation and fixation of the ureteral catheterization support tube, is not easy to break, can reduce stimulation to the bladder, and improves the comfort level of a patient after the ureteral catheterization support tube is left.
Example 5
The disposable ureteral catheterization stent tube comprises a kidney end, a stent tube body and a bladder end, wherein the hardness of the ureteral catheterization stent tube is sequentially reduced by the kidney end, the stent tube body and the bladder end, the kidney end is made of polyurethane, and the integral Shore hardness of the ureteral catheterization stent tube is 45A; the support tube body is made of 3 kinds of polyurethane with different hardness in a segmented mode, the Shore hardness of the support tube body from the end close to the kidney to the end close to the bladder is 30A, 28A and 25A in sequence, the bladder end is made of polyurethane integrally, the Shore hardness of the bladder end is 20A integrally, the kidney end and the bladder end are bent in opposite directions to form an arc respectively, and through holes for urine to enter and exit the support tube body are formed in the kidney end and the bladder end; the external diameter of the ureteral catheterization stent tube is sequentially reduced from a kidney end, a stent tube body and a bladder end; the outer walls of the kidney end, the stent tube body and the bladder end are provided with polyvinylpyrrolidone coatings, the surface roughness Ra of the coatings is less than 0.1 mu m, the thickness of the coatings is 20-30 mu m, the coatings are smooth and flat, the adhesion force of the coatings and a polyurethane substrate is strong, the hydrophilicity and the surface smoothness of the stent tube can be improved, and the occurrence of incrustation is reduced.
Example 6
The disposable ureteral catheterization stent tube comprises a kidney end, a stent tube body and a bladder end, wherein the hardness of the ureteral catheterization stent tube is sequentially reduced by the kidney end, the stent tube body and the bladder end, the kidney end is made of polyurethane, and the integral Shore hardness of the ureteral catheterization stent tube is 45A; the support tube body is made of 3 kinds of polyurethane with different hardness in a segmented mode, the Shore hardness of the support tube body from the end close to the kidney to the end close to the bladder is 30A, 28A and 25A in sequence, the bladder end is made of polyurethane integrally, the Shore hardness of the bladder end is 20A integrally, the kidney end and the bladder end are bent in opposite directions to form an arc respectively, and through holes for urine to enter and exit the support tube body are formed in the kidney end and the bladder end; the external diameter of the ureteral catheterization stent tube is sequentially reduced from the kidney end, the stent tube body and the bladder end, so that the stimulation to the bladder can be reduced; the length mark for observing the implantation depth of the ureteral catheterization stent is marked on the stent body; the outer walls of the kidney end, the stent tube body and the bladder end are provided with polyvinylpyrrolidone coatings, the surface roughness Ra of the coatings is less than 0.1 mu m, the hydrophilicity and the surface smoothness of the stent tube can be improved, and the occurrence of crusting is reduced; the bladder end is provided with a groove on the outer wall, a traction wire made of flexible materials is wound on the groove, the length of the traction wire is 15-25cm, and when the bladder end is displaced, the bladder end is pulled to an accurate position through the traction wire.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A disposable ureteral catheterization support tube is characterized by comprising a kidney end, a support tube body and a bladder end, wherein the hardness of the ureteral catheterization support tube is sequentially reduced by the kidney end, the support tube body and the bladder end, the kidney end and the bladder end are respectively bent in opposite directions to form circular arcs, and through holes for urine to enter and exit the support tube body are formed in the kidney end and the bladder end.
2. The single-use ureteral catheterization stent tube according to claim 1, wherein the shore hardness of the kidney end is 45-65A, the shore hardness of the stent tube body is 20-55A, and the shore hardness of the bladder end is 10-35A.
3. The single-use ureteral catheterization stent tube according to claim 2, wherein the shore hardness of the kidney end is 45-50A, the shore hardness of the stent tube body is 25-30A, and the shore hardness of the bladder end is 10-20A.
4. The disposable ureteral catheterization stent tube according to claim 1, wherein the kidney end, the stent tube body and the bladder end are made of medical polymer materials.
5. The single use ureteral catheterization stent tube of claim 1, wherein the external diameter of the ureteral catheterization stent tube is reduced in the order of the renal end, the stent body, and the bladder end.
6. The single use ureteral catheterization stent tube of claim 1, wherein the outer walls of the renal end, the stent tubular body, and the bladder end are provided with an anti-skinning coating.
7. The single use ureteral catheterization stent tube of claim 6, wherein the anti-encrustation coating is a polymeric hydrophilic coating or a silicon-containing hydrophilic coating.
8. The single use ureteral catheterization stent tube of claim 7, wherein the surface roughness Ra of the anti-encrustation coating is less than 0.1 μm.
9. The disposable ureteral catheter according to any of claims 1 to 8, wherein the outer wall of the bladder end is provided with a groove, and a traction wire is wound on the groove.
10. The disposable ureteral catheterization stent tube according to claim 9, wherein the traction wire is made of a flexible material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910948384.2A CN110721391A (en) | 2019-09-30 | 2019-09-30 | Disposable ureter catheterization support tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910948384.2A CN110721391A (en) | 2019-09-30 | 2019-09-30 | Disposable ureter catheterization support tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116138924A (en) * | 2022-10-20 | 2023-05-23 | 深圳朗医科技有限公司 | Anti-compression corrosion-resistant tumor ureteral stent |
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Application publication date: 20200124 |