CN109107024B - Stenosis dilation guide - Google Patents
Stenosis dilation guide Download PDFInfo
- Publication number
- CN109107024B CN109107024B CN201810869297.3A CN201810869297A CN109107024B CN 109107024 B CN109107024 B CN 109107024B CN 201810869297 A CN201810869297 A CN 201810869297A CN 109107024 B CN109107024 B CN 109107024B
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- China
- Prior art keywords
- air bag
- stenosis
- elastic
- guide
- guide body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 208000031481 Pathologic Constriction Diseases 0.000 title claims abstract description 46
- 230000036262 stenosis Effects 0.000 title claims abstract description 40
- 208000037804 stenosis Diseases 0.000 title claims abstract description 40
- 230000010339 dilation Effects 0.000 title claims description 35
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000000916 dilatatory effect Effects 0.000 abstract description 31
- 206010065584 Urethral stenosis Diseases 0.000 abstract description 4
- 201000001988 urethral stricture Diseases 0.000 abstract description 4
- 230000002966 stenotic effect Effects 0.000 description 16
- 210000003708 urethra Anatomy 0.000 description 16
- 238000010008 shearing Methods 0.000 description 6
- 239000002775 capsule Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 210000002700 urine Anatomy 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 230000002485 urinary effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 206010004446 Benign prostatic hyperplasia Diseases 0.000 description 1
- 206010049576 Bladder neck sclerosis Diseases 0.000 description 1
- 208000004403 Prostatic Hyperplasia Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000028484 Urethral disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
- 208000000143 urethritis Diseases 0.000 description 1
- 210000001635 urinary tract Anatomy 0.000 description 1
Classifications
-
- 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
- A61M25/10—Balloon catheters
- A61M25/1002—Balloon catheters characterised by balloon shape
-
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
- A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
-
- 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
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
- A61M29/02—Dilators made of swellable material
-
- 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
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1093—Balloon catheters with special features or adapted for special applications having particular tip characteristics
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0496—Urine
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1078—Urinary tract
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Child & Adolescent Psychology (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention provides a stenosis dilating guide, which comprises a tubular stenosis dilating guide body, wherein the front end of the stenosis dilating guide body is provided with a guide part, the rear end of the guide part is provided with an air bag, the side wall of the stenosis dilating guide body in the air bag is provided with a through hole, the rear end of the stenosis dilating guide body is provided with an elastic bag body, and the elastic bag body and the stenosis dilating guide body form a sealed space filled with gas or liquid. When the urethral catheter is used, the guiding part at the front end of the stenosis dilating guide body and the balloon pass through the front end of the urethral catheter and are positioned outside the front end of the urethral catheter, when the urethral stricture occurs, the stenosis dilating guide body is moved forwards for a small distance, then the elastic balloon body is extruded, the balloon is propped up, the urethral side wall is propped up, and the urethral catheter continues to advance. Then the elastic bag body is loosened, the gas or liquid in the front-end air bag flows back into the elastic bag body, then the operation is repeated, and the catheter is easy to be placed.
Description
Technical Field
The invention belongs to the field of medical appliances, and particularly relates to a stenosis dilation guide.
Background
As a common clinical medical instrument, the catheter is placed into a human body through the urethra to drain urine from the bladder to the outside, and has the main effects of accurately recording urine volume, facilitating drainage, flushing and the like, and plays an important role in clinic.
The catheter material mainly comprises silica gel, rubber, EVA, PVC, etc., and the head end and the catheter body are soft. However, some patients have larger resistance in the urethra due to the conditions of urethral stricture, prostatic hyperplasia, canceration, bladder neck sclerosis and the like, so that the difficulty of tube placement is greatly increased. The existing clinical urethral catheterization is usually carried out by fixing the external urethral orifice with one hand after disinfecting the external urethral orifice and surrounding tissues, directly holding the catheter with the other hand or with forceps and the like, inserting the catheter from the external urethral orifice, and when the catheter faces the bending resistance and the narrow condition, the catheter needs to be more forcefully placed in the patient, so that huge pain is brought to the patient, the damage to the urethral mucosa is caused, the damage to the urinary tract structure is caused, and the risk of urethral infection is increased.
The following problems exist in the existing clinical catheter implantation process: when the top end of the catheter head advances to the urethral stricture, external force is required to be increased for pushing, the shearing action can be generated between the top end of the head and the urethral canal at the stricture, even though the urethral canal passes through the stricture, the inner membrane of the urethral canal is also severely contused and provides conditions for microorganism infection, the external surface of the catheter is smeared with lubricating oil and the like, and the effect is very little when the urethral canal is correspondingly narrowed.
The urinary catheter is placed and replaced clinically, and the urinary catheter is difficult to replace, secondary urethral damage such as a false passage, bleeding, perforation and the like caused by violent insertion of the urinary catheter is easy to cause, so that the severity of urethral diseases is further increased, the healing of the urethra is influenced, and even complicated urethral damage and stenosis are caused, and the survival quality of patients is seriously influenced. Thus, for such patients, it is often necessary to place the catheter under the guidance of the guidewire in order to avoid the occurrence of a prosthesis when placing the catheter. Most of the existing catheters are catheter bodies with front ends sealed and rear ends open, and side openings are communicated with the catheter cavity. When the catheter is placed into the guide wire, the guide wire is led out from the side opening of the catheter through the lumen, so that the positions of the catheter and the guide wire cannot be ensured to be parallel to each other, the guide is difficult, and the catheter is placed into failure.
In the prior art, a guide wire is arranged inside a catheter, and the catheter is placed into the urethra through the guide wire with higher strength.
Disclosure of Invention
The invention aims to provide a narrow dilation guide instrument which is simple in structure and convenient for catheterization operation.
The technical scheme of the invention is as follows:
the narrow expansion guide comprises a tubular narrow expansion guide body, wherein the front end of the narrow expansion guide body is provided with a guide part, the rear end of the guide part is provided with an air bag, the side wall of the narrow expansion guide body inside the air bag is provided with a through hole, the rear end of the narrow expansion guide body is provided with an elastic bag body, and the elastic bag body and the narrow expansion guide body form a sealed space filled with gas or liquid.
When the stenotic dilation guide instrument is used, the stenotic dilation guide instrument is inserted into a urine channel of a catheter, and a guide part and an air bag at the front end of the stenotic dilation guide instrument body penetrate through an opening at the front end of the catheter and are positioned outside the front end of the catheter. When the urethral catheter is used, the stenotic dilation guide can play a role of a guide wire, when the urethral canal is stenotic and the urethral catheter cannot pass through, the stenotic dilation guide can be moved forwards for a small distance, then the elastic bag body is extruded, gas or liquid in the elastic bag body is extruded into the air bag through the through hole, the air bag is propped up, the urethral side wall is propped up, and the urethral catheter continues to advance. Then the elastic bag body is loosened, the gas or liquid in the front balloon flows back into the elastic bag body, and then the operation is repeated until the front end of the catheter enters the bladder, the fixed balloon is inflated, and the narrow dilation guide instrument is withdrawn. When the catheter is placed by adopting the narrow dilation guide, the catheter can be prevented from generating shearing force on the side wall of the urethra, the urethra is prevented from being damaged, the safety is high, in addition, the patient is painless in the placing process, and the compliance is good.
The front end of the air bag is provided with an air bag fixing ring, the inner side wall of the air bag fixing ring is fixedly connected with the outer side wall of the narrow expansion guide body, and the front end face of the air bag is a curved surface which is bent backwards.
The rear end face of the air bag is a plane vertical to the axis of the main body of the stricture dilation guide.
The rear end face of the air bag is a curved surface which is bent backwards.
The rear end face of the air bag is a curved face which is bent backwards, when the air bag is unfolded, the front end of the catheter moves forwards for a large distance, the time for placing the catheter is shortened, and the pain of a patient is reduced.
The rear end of the air bag is provided with an air bag fixing ring, the inner side wall of the air bag fixing ring is fixedly connected with the outer side wall of the narrow expansion guide body, and the rear end face of the air bag is a curved surface which is symmetrical to the front end face and is bent forwards.
The inner side wall of the air bag is provided with an annular reinforcing bulge which is vertical to the axis of the narrow dilation guide body.
The reinforced bulge can avoid irregular deformation of the air bag when the air bag is full, the air bag on one side of the inner catheter is prevented from being smaller and close to the side wall of the urethra, and the air bag on the other side of the inner catheter is larger and away from the side wall of the urethra, so that shearing force between the front end of the catheter and the side wall of the urethra can be avoided.
The front end face of the guide part is a paraboloid or an ellipsoid.
The guide may be passed through a relatively narrow urethra and a stenotic dilation guide introduced therein. The paraboloid or ellipsoid is smooth, and can not generate shearing force on the side wall of the urethra when entering the urethra, thereby reducing the damage to the urethra during intubation.
The front end of the elastic bag body is also provided with an elastic corrugated pipe, the rear end of the elastic corrugated pipe is contacted or connected with the outer surface of the elastic bag body, and the rear end of the narrow expansion guide body penetrates through the elastic corrugated pipe to be connected with the elastic bag body.
The elastic bellows may be replaced with a spring.
The elastic bag body is provided with a switch valve.
The elastic capsule can be supplemented with gas or liquid by an on-off valve.
The invention has the advantages and positive effects that: due to the adoption of the technical scheme, the catheter is safer and more convenient to put, the strength of the catheter can be further reduced, the flexibility of the catheter is increased, and the pain of a patient is reduced; the invention has the advantages of simple structure, low processing cost, high safety and the like, and can be used for dilating urethral stricture and also can be used for other parts needing to be inserted into a pipeline, such as esophagus, rectum and the like.
Drawings
FIG. 1 is a schematic view of a stricture dilation guide in accordance with the present invention
FIG. 2 is a schematic structural view of a balloon of example 1 of a stenosis dilation guide according to the present invention
FIG. 3 is a schematic view showing the structure of a balloon of example 2 of a stenosis dilation guide according to the present invention
FIG. 4 is a schematic structural view of a balloon of example 3 of a stenosis dilation guide according to the present invention
In the figure:
1. stenosis dilating guide body 2, guide 3, through hole 4, and balloon
8. Elastic bellows 9, elastic bag body 10, switch valve 41 and air bag fixing ring
42. Bottom 43 of air bag, reinforcing protrusion
Detailed Description
Example 1
As shown in fig. 1 and 2, the stenosis dilating guide comprises a tubular stenosis dilating guide body 1, a guide part 2 is arranged at the front end of the stenosis dilating guide body 1, the diameter of the guide part 2 gradually increases from front to back, the front end surface of the guide part 2 can be a paraboloid or an ellipsoid, the diameter of the rear end of the guide part 2 is equal to the outer diameter of the stenosis dilating guide body 1, an air bag 4 is arranged at the rear end of the guide part 2, a through hole 3 is arranged on the side wall of the stenosis dilating guide body 1 inside the air bag 4, an elastic bag body 9 is arranged at the rear end of the stenosis dilating guide body 1, and the elastic bag body 9 and the stenosis dilating guide body 1 form a sealed space filled with gas or liquid.
As shown in fig. 2, the front end of the balloon 4 is provided with a balloon retainer 41, the inner side wall of the balloon retainer 41 is fixedly connected with the outer side wall of the stenotic dilation guide body 1, and the front end surface of the balloon 4 is a curved surface which is bent backwards. The rear end surface of the airbag 4 is also a curved surface curved rearward. Thus, after the air bag is filled once, the front end of the catheter moves forwards for a longer distance, the time for placing the catheter can be shortened, and the pain of a patient can be relieved. Preferably, the rear end face of the air bag 4 is a curved face matched with the front end face of the catheter.
Further, the front end of the elastic bag body 9 is also provided with an elastic corrugated pipe 8, the rear end of the elastic corrugated pipe 8 is connected with the elastic bag body 9, or the rear end of the elastic corrugated pipe is contacted with the elastic bag body 9, and the rear end of the narrow expansion guide body 1 passes through the elastic corrugated pipe 8 to be connected with the elastic bag body 9. For the convenience of supplementing gas or liquid, an on-off valve 10 may be provided on the elastic capsule 9.
Example 2
As shown in fig. 1 and 3, the stenosis dilating guide comprises a tubular stenosis dilating guide body 1, a guide part 2 is arranged at the front end of the stenosis dilating guide body 1, the diameter of the guide part 2 gradually increases from front to back, the front end surface of the guide part 2 can be a paraboloid or an ellipsoid, the diameter of the rear end of the guide part 2 is equal to the outer diameter of the stenosis dilating guide body 1, an air bag 4 is arranged at the rear end of the guide part 2, a through hole 3 is arranged on the side wall of the stenosis dilating guide body 1 inside the air bag 4, an elastic bag body 9 is arranged at the rear end of the stenosis dilating guide body 1, and the elastic bag body 9 and the stenosis dilating guide body 1 form a sealed space filled with gas or liquid.
As shown in fig. 3, the front end of the balloon 4 is provided with a balloon retainer 41, the inner side wall of the balloon retainer 41 is fixedly connected with the outer side wall of the stenotic dilation guide body 1, and the front end surface of the balloon 4 is a curved surface which is bent backwards. The rear end surface of the balloon 4 is a plane perpendicular to the stricture dilation guide body axis 1. The inner diameter of the urethral side wall supported by the air bag 4 is larger, so that shearing force between the front end of the catheter and the urethral side wall can be avoided, and damage to the urethral side wall can be avoided.
Further, the front end of the elastic bag body 9 is also provided with an elastic corrugated pipe 8, the rear end of the elastic corrugated pipe 8 is connected with the elastic bag body 9, or the rear end of the elastic corrugated pipe is contacted with the elastic bag body 9, and the rear end of the narrow expansion guide body 1 passes through the elastic corrugated pipe 8 to be connected with the elastic bag body 9. For the convenience of supplementing gas or liquid, an on-off valve 10 may be provided on the elastic capsule 9.
Example 3
As shown in fig. 1 and 4, the stenosis dilating guide comprises a tubular stenosis dilating guide body 1, a guide part 2 is arranged at the front end of the stenosis dilating guide body 1, the diameter of the guide part 2 gradually increases from front to back, the front end surface of the guide part 2 can be a paraboloid or an ellipsoid, the diameter of the rear end of the guide part 2 is equal to the outer diameter of the stenosis dilating guide body 1, an air bag 4 is arranged at the rear end of the guide part 2, a through hole 3 is arranged on the side wall of the stenosis dilating guide body 1 inside the air bag 4, an elastic bag body 9 is arranged at the rear end of the stenosis dilating guide body 1, and the elastic bag body 9 and the stenosis dilating guide body 1 form a sealed space filled with gas or liquid.
As shown in fig. 4, the front end of the balloon 4 is provided with a balloon retainer 41, the inner side wall of the balloon retainer 41 is fixedly connected with the outer side wall of the stenotic dilation guide body 1, and the front end surface of the balloon 4 is a curved surface which is bent backwards. The rear end of the air bag 4 is also provided with an air bag fixing ring 41, the inner side wall of the air bag fixing ring 41 is fixedly connected with the outer side wall of the narrow dilation guide body 1, and the rear end face of the air bag 4 is a curved surface which is symmetrical to the front end face and is bent forwards. The inner side wall of the air bag 4 is provided with an annular strengthening protrusion 43, and the strengthening protrusion 43 is perpendicular to the axis of the stenotic dilation guide body 1.
Further, the front end of the elastic bag body 9 is also provided with an elastic corrugated pipe 8, the rear end of the elastic corrugated pipe 8 is connected with the elastic bag body 9, or the rear end of the elastic corrugated pipe is contacted with the elastic bag body 9, and the rear end of the narrow expansion guide body 1 passes through the elastic corrugated pipe 8 to be connected with the elastic bag body 9. For the convenience of supplementing gas or liquid, an on-off valve 10 may be provided on the elastic capsule 9.
The working procedure of this example: when the stenotic dilation guide is used, the stenotic dilation guide is inserted into a urine channel of a catheter, and a guide part 2 and an air bag 4 at the front end of a stenotic dilation guide body 1 pass through an opening at the front end of the catheter and are positioned outside the front end of the catheter. When the urethral catheter is used, the stenotic dilation guide 1 can play a role of a guide wire, when the urethra is stenosed and the urethral catheter cannot pass through, the stenotic dilation guide is moved forwards for a small distance, then the elastic bag body 9 is extruded, gas or liquid in the elastic bag body 9 is extruded into the air bag 4 through the through hole 3, the air bag 4 is propped up, the urethral side wall is propped up, and the urethral catheter continues to advance. Then the elastic balloon body 9 is loosened, the gas or liquid in the front balloon 4 flows back into the elastic balloon body 9, and then the operation is repeated until the front end of the catheter enters the bladder, the fixed balloon is inflated, and the narrow dilation guide instrument is withdrawn. When the catheter is placed by adopting the narrow dilation guide, the catheter can be prevented from generating shearing force on the side wall of the urethra, the urethra is prevented from being damaged, the safety is high, in addition, the patient is painless in the placing process, and the compliance is good.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (3)
1. A stricture dilation guide, characterized in that: the device comprises a tubular narrow expansion guide body, wherein the front end of the narrow expansion guide body is provided with a guide part, the rear end of the guide part is provided with an air bag, the side wall of the narrow expansion guide body inside the air bag is provided with a through hole, the rear end of the narrow expansion guide body is provided with an elastic bag body, the elastic bag body and the narrow expansion guide body form a sealed space filled with gas or liquid, the front end of the air bag is provided with an air bag fixing ring, the inner side wall of the air bag fixing ring is fixedly connected with the outer side wall of the narrow expansion guide body, the front end face of the air bag is a curved surface which is bent backwards, the inner side wall of the air bag fixing ring is fixedly connected with the outer side wall of the narrow expansion guide body, the rear end face of the air bag is a curved surface which is bent forwards symmetrically to the front end face, the inner side wall of the air bag is provided with an annular reinforcing bulge which is perpendicular to the axis of the narrow expansion guide body, the front end of the elastic bag body is also provided with an elastic corrugated pipe, the rear end of the elastic corrugated pipe is contacted or connected with the outer surface of the elastic bag body, and the rear end of the narrow expansion guide body passes through the elastic corrugated pipe to be connected with the elastic corrugated pipe.
2. The stenosis dilation guide apparatus of claim 1, wherein: the diameter of the guiding part gradually increases from front to back, the diameter of the rear end of the guiding part is equal to the outer diameter of the stenosis dilation guiding device body,
3. the stenosis dilation guide apparatus of claim 2, wherein: the front end face of the guide part is a paraboloid or an ellipsoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810869297.3A CN109107024B (en) | 2018-08-02 | 2018-08-02 | Stenosis dilation guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810869297.3A CN109107024B (en) | 2018-08-02 | 2018-08-02 | Stenosis dilation guide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109107024A CN109107024A (en) | 2019-01-01 |
| CN109107024B true CN109107024B (en) | 2024-04-16 |
Family
ID=64851626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810869297.3A Active CN109107024B (en) | 2018-08-02 | 2018-08-02 | Stenosis dilation guide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109107024B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425106B (en) * | 2020-10-14 | 2024-03-29 | 于从军 | Drainage device, drainage method and drainage device manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1062966A1 (en) * | 1999-06-25 | 2000-12-27 | Terumo Kabushiki Kaisha | Balloon for dilating a stricture and balloon catheter |
| CN203379471U (en) * | 2013-06-29 | 2014-01-08 | 何宗海 | Urethral dilator |
| CN207024390U (en) * | 2017-02-06 | 2018-02-23 | 伍星 | A kind of expanding catheter |
| CN209967373U (en) * | 2018-08-02 | 2020-01-21 | 山东威高集团医用高分子制品股份有限公司 | Stenosis dilatation guide device |
-
2018
- 2018-08-02 CN CN201810869297.3A patent/CN109107024B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1062966A1 (en) * | 1999-06-25 | 2000-12-27 | Terumo Kabushiki Kaisha | Balloon for dilating a stricture and balloon catheter |
| CN203379471U (en) * | 2013-06-29 | 2014-01-08 | 何宗海 | Urethral dilator |
| CN207024390U (en) * | 2017-02-06 | 2018-02-23 | 伍星 | A kind of expanding catheter |
| CN209967373U (en) * | 2018-08-02 | 2020-01-21 | 山东威高集团医用高分子制品股份有限公司 | Stenosis dilatation guide device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109107024A (en) | 2019-01-01 |
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