CN113679930B - Self-lubricating type catheter of expansion - Google Patents
Self-lubricating type catheter of expansion Download PDFInfo
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- CN113679930B CN113679930B CN202110756135.0A CN202110756135A CN113679930B CN 113679930 B CN113679930 B CN 113679930B CN 202110756135 A CN202110756135 A CN 202110756135A CN 113679930 B CN113679930 B CN 113679930B
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- conveying pipe
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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
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- 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
-
- 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
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
-
- 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
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
- A61M2025/0046—Coatings for improving slidability
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3368—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Epidemiology (AREA)
- Urology & Nephrology (AREA)
- Child & Adolescent Psychology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses an expansion self-lubricating catheter, which belongs to the technical field of catheters, an outer expansion pipe is sleeved on the outer side wall of an inner conveying pipe, an inner medicine injection cavity pipe communicated with the outer expansion pipe is arranged inside the inner conveying pipe, lubricating oil is led into a liquid storage cavity in advance by using the inner medicine injection cavity pipe, in the inserting process, the lubricating oil is uniformly oozed out of the outer wall of the outer expansion pipe due to elastic extrusion, so that the real-time lubricating effect on the urethra is achieved, the friction resistance is reduced, the outer surface of the outer expansion pipe is not required to be lubricated and smeared in advance, in the inserting process, the thermal expanding gas stored in the outer expansion pipe is expanded to enable the thermal expanding gas to be moderately expanded outwards, the lubricating oil is easy to extrude out, and a certain flexible outer expansion effect is also achieved on the urethra.
Description
Technical Field
The invention relates to the technical field of catheters, in particular to an expanding self-lubricating catheter.
Background
Catheters are commonly used as insertion type medical devices, and are widely used for patients with anesthesia operation, postoperative bedridden rehabilitation, inconvenient actions, incapacitation of self-urination, urination disorder, difficulty and the like.
The materials of the catheter mainly comprise latex, natural rubber, polyvinyl chloride, silicone rubber and the like, and as the surface lubricity of the catheter is insufficient, the catheter has larger friction in the process of inserting or extracting the urethra or the fistulization part, and is easy to damage the urethra and tissues around the fistulization.
Therefore, the catheter needs to be lubricated, and the resistance to the body during the insertion and extraction processes is reduced. In the prior art, a layer of lubricating oil is coated on the outer surface of the catheter, so that the method is original and troublesome, and if the method is not operated in time, the lubricating oil is dried, so that a good experience effect is not achieved; and the size of the existing catheter is certain, and moderate elastic expansion is difficult to perform, if the catheter is extruded by the urethra, the deformation of the catheter can be caused, so that smooth delivery of urine and liquid medicine is prevented.
Therefore, we propose an expanding self-lubricating catheter to effectively solve some problems existing in the prior art.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems existing in the prior art, the invention aims to provide the self-lubricating expanding catheter, the outer expanding tube is sleeved on the outer side wall of the inner conveying tube, lubricating oil is led into the liquid storage cavity in advance by utilizing the oil feeding double tube, in the inserting process, the lubricating oil is uniformly oozed out of the outer wall of the outer expanding tube due to elastic extrusion, the real-time lubricating effect is achieved on the urethra, the friction resistance is reduced, in the inserting process, the outer expanding tube is moderately expanded outwards, the lubricating oil is easy to extrude on one hand, and a certain flexible external expanding effect is also achieved on the urethra on the other hand.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The utility model provides an expansion self-lubricating catheter, includes interior conveyer pipe, the rear end of interior conveyer pipe is equipped with fluid-discharge tube mouth, water injection mouth, notes medicine mouth, fluid-discharge tube mouth is linked together with interior conveyer pipe inside, interior conveyer pipe inside be equipped with respectively with water injection mouth, notes medicine mouth be connected interior water injection chamber pipe, interior notes medicine chamber pipe, interior conveyer pipe keeps away from fluid-discharge tube mouth's front end and is equipped with the gasbag, interior conveyer pipe inside is equipped with the intake pipe that is connected with the gasbag, the cover is equipped with outer expansion pipe on the outer end wall of interior conveyer pipe, interior conveyer pipe inside still is equipped with the double-barrelled with the oil feed, the inner and the outer expansion pipe inside of double-barrelled being connected of oil feed, the inside of outer expansion pipe still stores the hot expanding gas.
Further, the liquid discharging pipe orifice is connected with an external urine storage bag, and the outer end of the air inlet pipe penetrates through the liquid discharging pipe orifice and extends outwards.
Further, the outer expansion pipe comprises an outer permeation glue layer and a heat insulation layer which are sleeved and connected with each other, and the front end and the rear end of the outer permeation glue layer are respectively connected with the outer wall of the inner conveying pipe in a sealing mode through elliptic connectors.
Further, the outer end wall of the outer permeable glue layer is coated with an antibacterial coating, and a plurality of permeable holes are formed in the outer end wall of the outer permeable glue layer, and the diameter of each permeable hole is 0.2-0.5mm.
Further, a liquid storage cavity is formed between the outer permeable glue layer and the heat insulation layer, a gas storage cavity is formed between the heat insulation layer and the inner conveying pipe, and gas is stored in the gas storage cavity.
Furthermore, the outer permeable glue layer and the inner conveying pipe are both made of elastic heat insulation materials, and the thermal expansion gas is carbon dioxide.
Further, the oil feeding double-pipe comprises two upper and lower hoses, the outer ends of the two hoses are connected, and the outer end of one of the two hoses is connected with an oil inlet pipe, the oil inlet pipe extends to the outer end of the liquid discharge pipe orifice, the inner ends of the two hoses extend to the upper and lower ends of the liquid storage cavity respectively, lubricating oil is led into the liquid storage cavity in advance by the aid of the oil feeding double-pipe, when the device is not used, namely under the condition of not extruding, the lubricating oil is temporarily stored in the liquid storage cavity, and in the inserting and extruding process, the lubricating oil is evenly oozed out from the outer permeable glue layer, so that a real-time lubricating effect is achieved on the urethra.
Further, a plurality of electric heating wires are distributed on the outer end wall of the inner conveying pipe, the outer ends of the electric heating wires extend out of the liquid discharge pipe orifice and are externally connected with a power supply, after lubricating oil is injected into the liquid storage cavity, the front end of the catheter is slowly inserted into the urinary meatus, meanwhile, the electric heating wires are utilized to heat gas in the liquid storage cavity, and the heat insulation layer is expanded outwards moderately.
Furthermore, the inner conveying pipe and the outer permeable glue layer are both made of natural rubber, and the flexibility of the outer expansion pipe is larger than that of the inner conveying pipe, so that the outer expansion pipe is easy to elastically expand relative to the inner conveying pipe when the outer expansion pipe is expanded by gas expansion.
Further, a plurality of flexible stop collars are distributed in the inner conveying pipe, and the flexible stop collars are sleeved on the outer sides of the inner water injection cavity pipe, the inner medicine injection cavity pipe and the air inlet pipe, so that the inner conveying pipe is free from deformation caused by extrusion.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, the outer expansion pipe is sleeved on the outer side wall of the inner conveying pipe, the inner medicine injection cavity pipe communicated with the outer expansion pipe is arranged in the inner conveying pipe, lubricating oil is led into the liquid storage cavity in advance by the oil feeding double pipe, in the inserting process, the lubricating oil is evenly oozed out of the outer wall of the outer expansion pipe due to elastic extrusion, so that the urethra is lubricated in real time, friction resistance is reduced, the outer surface of the outer expansion pipe is not required to be lubricated and smeared in advance, in the inserting process, the thermal expansion gas stored in the outer expansion pipe expands to enable the outer expansion pipe to moderately expand outwards, on one hand, the lubricating oil is easy to extrude, on the other hand, a certain flexible outer expansion effect is also achieved on the urethra, and the inner expansion pipe is directly inserted in a relatively rigid mode, so that injury to the urethra is reduced, and extrusion deformation caused to the inner conveying pipe is avoided.
(2) The outer expansion pipe of this scheme includes that the overcoat is established the outer infiltration layer of gluing and the insulating layer that link up, and the front and back both ends of outer infiltration layer all link up with interior conveyer pipe outer wall is sealed through oval connector, and imported lubricating oil is temporarily stored in the stock solution intracavity, in inserting extrusion process, the gas that stores in the stock solution intracavity is because of being heated moderate expansion to carry out moderate extrusion to the insulating layer, lubricating oil outwards evenly oozes from outer infiltration layer.
(3) The interior conveyer pipe of this scheme all adopts natural rubber to make with outer infiltration glue film, and the flexibility degree of outer expansion pipe is greater than the flexibility degree of interior conveyer pipe, when utilizing gas expansion to expand outward, for interior conveyer pipe, easily carries out elastic expansion to outer expansion pipe to reduce the extrusion to interior conveyer pipe, in order to avoid causing interior conveyer pipe internal deformation to lead to the fact the transportation to be unsmooth promptly because of the extrusion.
(4) The inside of this scheme at interior conveyer pipe distributes has a plurality of flexible stop collars, and the outside of interior water injection lumen, interior medicine injection lumen and intake pipe is located to flexible stop collar, is favorable to playing spacing effect to interior water injection lumen, interior medicine injection lumen and intake pipe, further in order to avoid causing interior conveyer pipe internal deformation because of the extrusion to can not cause interior conveyer pipe water injection, medicine dripping or urination's not unobstructed.
Drawings
FIG. 1 is a schematic view of the present invention in use;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is an internal schematic view of the present invention with the inner delivery tube removed;
FIG. 4 is a schematic view of a part of the structure of the inner water injection cavity pipe and the oil feeding double pipe positioned by the flexible limiting sleeve;
FIG. 5 is a schematic view of the structure of the oil feeding double pipe of the present invention;
FIG. 6 is a partial external cross-sectional view of the present invention;
FIG. 7 is a partial cross-sectional view of the junction of the inner delivery tube and outer stent of the present invention;
FIG. 8 is a schematic side view of a junction of an inner delivery tube and an outer stent of the present invention;
FIG. 9 is a second schematic side view of the junction of the inner delivery tube and outer stent of the present invention;
FIG. 10 is a schematic side view of the invention showing the expansion of the junction between the inner and outer tubes.
The reference numerals in the figures illustrate:
the device comprises an inner conveying pipe 1, an outer expanding pipe 2, an elliptic adaptor, an outer permeable glue layer 202, a heat insulation layer 203, an air bag 3, a liquid discharging pipe orifice 4, a water injection pipe orifice 5, a medicine injection pipe orifice 6, an inner water injection cavity pipe 7, an inner medicine injection cavity pipe 8, an oil feeding double pipe 9, an oil feeding pipe 901, an air inlet pipe 10, a flexible limit sleeve 11 and an electric heating wire 12.
Detailed Description
The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only a few embodiments of the present invention; but not all embodiments, are based on embodiments in the present invention; all other embodiments obtained by those skilled in the art without undue burden; all falling within the scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1-3, an expanding self-lubricating catheter comprises an inner conveying pipe 1, wherein a liquid discharging pipe orifice 4, a water injection pipe orifice 5 and a medicine injection pipe orifice 6 are arranged at the rear end of the inner conveying pipe 1, the liquid discharging pipe orifice 4 is communicated with the inside of the inner conveying pipe 1, an inner water injection cavity pipe 7 and an inner medicine injection cavity pipe 8 which are respectively connected with the water injection pipe orifice 5 and the medicine injection pipe orifice 6 are arranged inside the inner conveying pipe 1, an air bag 3 is arranged at the front end of the inner conveying pipe 1 far away from the liquid discharging pipe orifice 4, an air inlet pipe 10 connected with the air bag 3 is arranged inside the inner conveying pipe 1, the liquid discharging pipe orifice 4 is connected with an external urine storage bag, the outer end of the air inlet pipe 10 penetrates through the liquid discharging pipe orifice 4 and extends outwards, air is led into the air bag 3 by the air inlet pipe 10, and the inner end of the urinary catheter is limited in the bladder after the air bag 3 is expanded, so that the inner end of the urinary catheter is not easy to break away.
Referring to fig. 6-8, an outer expansion pipe 2 is sleeved on the outer end wall of the inner conveying pipe 1, an oil feeding double pipe 9 is further arranged in the inner conveying pipe 1, the inner end of the oil feeding double pipe 9 is connected with the inner part of the outer expansion pipe 2, hot expanding gas is further stored in the outer expansion pipe 2, the outer expansion pipe 2 comprises an outer permeable glue layer 202 and a heat insulation layer 203, the outer permeable glue layer 202 is sleeved and connected with the outer wall of the inner conveying pipe 1 in a sealing mode through an elliptic connector 201, an antibacterial coating is coated on the outer end wall of the outer permeable glue layer 202, a plurality of penetrating holes are formed in the outer end wall of the outer permeable glue layer 202, and the diameter of each penetrating hole is 0.2-0.5mm.
Referring to fig. 6-10, a liquid storage cavity is formed between the outer permeable glue layer 202 and the heat insulating layer 203, a gas storage cavity is formed between the heat insulating layer 203 and the inner conveying pipe 1, hot expanding gas is stored in the gas storage cavity, the hot expanding gas adopts carbon dioxide, the outer permeable glue layer 202 and the inner conveying pipe 1 are both made of elastic heat insulating materials, the hot expanding gas is carbon dioxide, the oil feeding double pipe 9 is composed of an upper hose and a lower hose, the outer ends of the two hoses are connected, the outer end of one hose is connected with the oil inlet pipe 901, the oil inlet pipe 901 extends to the outer end of the liquid drain pipe 4, the inner ends of the two hoses respectively extend to the upper end and the lower end of the liquid storage cavity, lubricating oil is led into the liquid storage cavity in advance by the oil feeding double pipe 9, when the liquid storage cavity is not used, namely under the condition of not being extruded, the lubricating oil is not easy to leak out temporarily because the aperture of the penetration hole of the outer permeable glue layer 202, the lubricating oil is overflowed from the penetration hole of the outer permeable glue layer 202 under the condition of extrusion, the condition of being extruded, the real-time lubrication effect is achieved on the contacted place, and damage caused by dryness is prevented.
The outer end wall of the inner conveying pipe 1 is provided with a plurality of electric heating wires 12, the outer ends of the electric heating wires 12 extend out of the liquid discharge pipe orifice 4 and are externally connected with a power supply, after lubricating oil is injected into the liquid storage cavity, the front end of the catheter is slowly inserted into the urinary meatus, meanwhile, the plurality of electric heating wires 12 are utilized to heat gas in the gas storage cavity, the heating temperature is moderate, so that the catheter is not influenced by high temperature, the heat insulation layer 203 is moderately expanded outwards, the lubricating oil in the liquid storage cavity is extruded when the heat insulation layer 203 is elastically expanded outwards, on the other hand, a certain flexible expansion effect is also achieved on the urethra, and compared with direct rigid insertion, so that the damage to the urethra is reduced, the inner hole diameter of the inner conveying pipe 1 is effectively prevented from being reduced due to inward extrusion of the inner conveying pipe 1, and the deformation of the water injection cavity pipe 7 and the inner medicine injection cavity pipe 8 due to extrusion is avoided.
It should be added that the inner conveying pipe 1 and the outer permeable glue layer 202 are made of natural rubber, the flexibility of the outer expanding pipe 2 is greater than that of the inner conveying pipe 1, when the outer expanding pipe 1 expands by gas, the outer expanding pipe 2 is easy to expand elastically relative to the inner conveying pipe 1, a plurality of flexible limiting sleeves 11 are distributed in the inner conveying pipe 1, the flexible limiting sleeves 11 are sleeved on the outer sides of the inner water injection cavity pipe 7, the inner medicine injection cavity pipe 8 and the air inlet pipe 10, limiting effects are achieved on the inner water injection cavity pipe 7, the inner medicine injection cavity pipe 8 and the air inlet pipe 10, deformation of the inner conveying pipe 1 caused by extrusion is further avoided, and accordingly, the inner conveying pipe 1 is not smooth in water injection, medicine dripping or urination.
The components used in the invention are all general standard components or components known to the person skilled in the art, and the structures and principles of the components are all known to the person skilled in the art through technical manuals or through routine experimental methods.
The above; is only a preferred embodiment of the present invention; the scope of the invention is not limited in this respect; any person skilled in the art is within the technical scope of the present disclosure; equivalent substitutions or changes are made according to the technical proposal of the invention and the improved conception thereof; are intended to be encompassed within the scope of the present invention.
Claims (6)
1. The utility model provides an expansion self-lubricating catheter, includes interior conveyer pipe (1), the rear end of interior conveyer pipe (1) is equipped with fluid discharge pipe mouth (4), water injection mouth (5), injection mouth (6), its characterized in that: the liquid discharge pipe opening (4) is communicated with the inside of the inner conveying pipe (1), an inner water injection cavity pipe (7) and an inner medicine injection cavity pipe (8) which are respectively connected with the water injection pipe opening (5) and the medicine injection pipe opening (6) are arranged in the inner conveying pipe (1), an air bag (3) is arranged at the front end, far away from the liquid discharge pipe opening (4), of the inner conveying pipe (1), and an air inlet pipe (10) connected with the air bag (3) is arranged in the inner conveying pipe (1); an outer expansion pipe (2) is sleeved on the outer end wall of the inner conveying pipe (1), an oil feeding double pipe (9) is further arranged inside the inner conveying pipe (1), the inner end of the oil feeding double pipe (9) is connected with the inside of the outer expansion pipe (2), and thermal expanding gas is further stored inside the outer expansion pipe (2);
the outer expansion pipe (2) comprises an outer permeation glue layer (202) and a heat insulation layer (203) which are sleeved and connected with each other, and the front end and the rear end of the outer permeation glue layer (202) are respectively connected with the outer wall of the inner conveying pipe (1) in a sealing way through an elliptic connector (201);
an antibacterial coating is coated on the outer end wall of the outer permeable adhesive layer (202), a plurality of permeable holes are formed in the outer end wall of the outer permeable adhesive layer (202), and the diameters of the permeable holes are 0.2-0.5mm;
a liquid storage cavity is formed between the outer permeable adhesive layer (202) and the heat insulation layer (203), a gas storage cavity is formed between the heat insulation layer (203) and the inner conveying pipe (1), and the gas is stored in the gas storage cavity;
the oil feeding double pipe (9) is composed of an upper hose and a lower hose, the outer ends of the two hoses are connected, the outer end of one hose is connected with an oil inlet pipe (901), the oil inlet pipe (901) extends to the outer end part of the liquid discharging pipe orifice (4), and the inner ends of the two hoses extend to the upper end and the lower end of the liquid storage cavity respectively.
2. An expandable self-lubricating urinary catheter in accordance with claim 1, wherein: the liquid discharge pipe orifice (4) is connected with an external urine storage bag, and the outer end of the air inlet pipe (10) penetrates through the liquid discharge pipe orifice (4) and extends outwards.
3. An expandable self-lubricating urinary catheter in accordance with claim 1, wherein: the outer permeable glue layer (202) and the inner conveying pipe (1) are made of elastic heat insulation materials, and the thermal expansion gas is carbon dioxide.
4. An expandable self-lubricating urinary catheter in accordance with claim 1, wherein: a plurality of electric heating wires (12) are distributed on the outer end wall of the inner conveying pipe (1), and the outer ends of the electric heating wires (12) extend out of the liquid discharge pipe orifice (4) and are externally connected with a power supply.
5. An expandable self-lubricating urinary catheter in accordance with claim 1, wherein: the inner conveying pipe (1) and the outer permeable rubber layer (202) are made of natural rubber, and the flexibility of the outer expansion pipe (2) is larger than that of the inner conveying pipe (1).
6. An expandable self-lubricating urinary catheter in accordance with claim 1, wherein: the inner part of the inner conveying pipe (1) is provided with a plurality of flexible limiting sleeves (11), and the flexible limiting sleeves (11) are sleeved on the outer sides of the inner water injection cavity pipe (7), the inner medicine injection cavity pipe (8) and the air inlet pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110756135.0A CN113679930B (en) | 2021-07-05 | 2021-07-05 | Self-lubricating type catheter of expansion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110756135.0A CN113679930B (en) | 2021-07-05 | 2021-07-05 | Self-lubricating type catheter of expansion |
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| Publication Number | Publication Date |
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| CN113679930A CN113679930A (en) | 2021-11-23 |
| CN113679930B true CN113679930B (en) | 2023-07-28 |
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| CN114748769A (en) * | 2022-04-06 | 2022-07-15 | 重庆市人民医院 | Support for facilitating instrument to enter urethra for treatment or detection |
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| US5098379A (en) * | 1990-01-10 | 1992-03-24 | Rochester Medical Corporation | Catheter having lubricated outer sleeve and methods for making and using same |
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| CN102614573A (en) * | 2012-04-19 | 2012-08-01 | 柳晓杰 | Urethra catheter for expansion of urethral canal and manufacturing method thereof |
| KR20150042917A (en) * | 2013-10-14 | 2015-04-22 | 주식회사 에이알씨코리아 | Catheter preventing against urethral stricture |
| CN203816050U (en) * | 2014-04-11 | 2014-09-10 | 四川省安利康医疗用品有限公司 | Novel urinary catheter |
| CN104107500A (en) * | 2014-07-29 | 2014-10-22 | 江苏康诺医疗器械有限公司 | Sterile super-lubricity antiseep safety catheter structure |
| CN205924664U (en) * | 2016-05-18 | 2017-02-08 | 张学丽 | Convenient catheter |
| CN207306967U (en) * | 2017-03-28 | 2018-05-04 | 孙元山 | Self-lubricate hurtless measure catheter |
| CN210750826U (en) * | 2019-09-17 | 2020-06-16 | 中山大学附属第三医院 | Double-bag external urethral sphincter dilating tube |
| CN110860025A (en) * | 2019-11-28 | 2020-03-06 | 张正潮 | Urethral dilatation catheter for urethral stricture and using method thereof |
| CN211798190U (en) * | 2019-12-30 | 2020-10-30 | 郑州儿童医院 | Disposable anti-infection catheter |
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