CN110548210A - Catheter capable of preventing edges and corners formed by pressure loss from damaging urethra - Google Patents
Catheter capable of preventing edges and corners formed by pressure loss from damaging urethra Download PDFInfo
- Publication number
- CN110548210A CN110548210A CN201910955344.0A CN201910955344A CN110548210A CN 110548210 A CN110548210 A CN 110548210A CN 201910955344 A CN201910955344 A CN 201910955344A CN 110548210 A CN110548210 A CN 110548210A
- Authority
- CN
- China
- Prior art keywords
- outer tube
- catheter
- protection
- protective
- urethra
- 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.)
- Granted
Links
- 210000003708 urethra Anatomy 0.000 title abstract description 38
- 230000001681 protective effect Effects 0.000 claims description 26
- 230000002485 urinary effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 14
- 230000009471 action Effects 0.000 abstract description 10
- 230000000149 penetrating effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000006378 damage Effects 0.000 description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 238000002627 tracheal intubation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000005077 saccule Anatomy 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000000626 ureter Anatomy 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 210000003932 urinary bladder 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
- A61M25/0043—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
- A61M25/10—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
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1018—Balloon inflating or inflation-control devices
-
- 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
- A61M2210/1085—Bladder
Abstract
The invention relates to a catheter for preventing edges and corners formed by pressure loss from damaging urethra, which comprises an outer tube and a protection part arranged on the outer tube, wherein the outer tube is provided with an expansion part, the expansion part is arranged in the protection part, and the expansion part is used for penetrating through the protection part under the action of internal pressure, expanding outwards and being accommodated in the protection part after internal pressure is lost; the catheter provided by the invention has the advantages that the structure is simple, the design is reasonable, in the actual use process, the expansion part of the outer tube can be expanded outwards to form the saccular protrusion through the pressurization of the outer tube, so that the catheter can be clamped at the urethral orifice to be fixed and avoid the dropping of the catheter, and in addition, when the catheter is detached, the expansion part after the pressure loss and the deflation can be accommodated in the protection part, the sharp corner formed by the expansion part is prevented from being directly exposed outside the outer tube, so that the corner can be effectively prevented from being directly contacted with the urethra, and the purposes of protecting the urethra and improving the comfort of a patient are achieved.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a catheter for preventing edges and corners formed by pressure loss from damaging urethra.
Background
The urinary catheter is a conduit inserted into the urinary bladder from the urethra to drain urine, and is generally made of soft materials such as natural rubber, silicone rubber or polyvinyl chloride (PVC), and is widely used in clinical practice.
The catheters commonly used in the prior art are divided according to structures and can be generally divided into a single-cavity catheter, a double-cavity catheter and a three-cavity catheter, wherein the single-cavity catheter only has one channel for catheterization, is inconvenient to fix and has short retention time; the double-cavity catheter is provided with two cavities, the two cavities are formed by an inner tube and an outer tube which are sleeved together, as shown in the attached drawing 1, a liquid inlet communicated with the inner tube is formed in the head end of the double-cavity catheter, and a liquid outlet communicated with the inner tube and a valve (a valve for injecting water or a valve for inflating) communicated with the outer tube are respectively formed in the tail end of the double-cavity catheter; when the catheter is required to be pulled out, the air or water in the outer tube is discharged through the valve, so that the outward protruding balloon can be eliminated, the original shape of the balloon is recovered, and smooth catheter pulling is facilitated; compared with a double-cavity catheter, the three-cavity catheter is additionally provided with a drug injection cavity and is mainly used for occasions of short-term indwelling catheterization, intravesical liquid medicine instillation, flushing, drainage and the like.
In order to facilitate the fixation and detachment prevention of the urinary catheter, the patents on the urinary catheter disclosed in the prior art generally adopt the following technical schemes: the local area of the outer tube is expanded in a water injection or inflation state to form a saccule (such as the outer tube in the double-cavity catheter), so that the saccule is clamped at the urethral orifice, and the catheter is fixed and prevented from falling off; although the technical scheme has better fixing and anti-dropping effects in clinic, in the actual use process, people never notice: when water or air is removed from the outer tube (i.e., after the internal pressure is lost), the expanded region of the outer tube is generally difficult to recover to its original shape and to maintain its smooth surface, and in fact, the region is generally collapsed and formed into one or more circumferentially arranged corners that extend along the length of the outer tube, which are generally sharp and rigid and are not conducive to tube drawing; for example, when air or water in the outer tube shown in fig. 2 is pumped out, an edge angle as shown in fig. 3 is formed in the area where the balloon is formed, on one hand, the edge angle is very easy to cause injury to the urethra during the tube drawing process, and even cause infection of the urethra; on the other hand, the patient feels very uncomfortable in the process of tube drawing because the outer tube is not smooth; however, the person skilled in the art has not yet noticed this problem and lacks effective means to solve it.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the catheter, which can not only enable the local area to expand outwards and form a saccular bulge through pressurizing the outer tube so as to realize the functions of fixing and preventing the catheter from falling off, but also can prevent the edges formed in the local area from being directly exposed outside after the outer tube loses pressure, thereby effectively preventing the edges from being directly contacted with the urethra, and achieving the purposes of protecting the urethra and improving the comfort of a patient.
The technical scheme adopted by the invention is as follows:
The utility model provides a prevent that edges and corners that decompression formed from harms urethral catheter, include the outer tube with set up in the protection portion of outer tube, the outer tube is provided with inflation portion, just inflation portion set up in the inside of protection portion, inflation portion are used for passing protection portion and outside inflation under the effect of internal pressure, and are used for accomodating in the protection portion after losing internal pressure. In the scheme, the protection part is arranged on the outer side of the expansion part, when the catheter is inserted in place and needs to be fixed, the expansion part arranged on the outer tube can expand outwards under the action of the internal pressure of the outer tube to form a sac-shaped bulge, so that the expansion part can be clamped at the urethral orifice of a patient, the fixation of the catheter is realized, the automatic falling of the catheter can be effectively avoided, and the aim of preventing the catheter from falling off is fulfilled; when the catheter is pulled out to needs, need let out earlier the interior pressure of removing the outer tube, after the outer tube loses interior pressure, inflation portion can become flat and automatic inside of accomodating the protection portion for the edges and corners that form after the inflation portion decompression is located the inside of protection portion, and protection portion can reach the purpose of keeping apart inflation portion through sheltering from to inflation portion promptly, thereby avoids edges and corners and urethra direct contact not only can effectively protect patient's urethra at the in-process of pulling out the pipe, avoid the damage of urethra, can make the tube drawing process more smooth and easy moreover, thereby effectively strengthen patient's comfort.
Preferably, the protection portion is smoothly provided to the outer tube. That is, the protection part is not only fixed in the outer tube, and there is not edges and corners or any place that is not smooth between protection part and the outer tube moreover to make this catheter neither cause the damage of urethra in the process of intubate and extubation, can not cause patient's discomfort again.
Preferably, the protection part comprises a protection cylinder with a cylindrical structure, the protection cylinder is made of hard materials, and one or more through holes are formed in the side wall of the protection cylinder and are used for allowing the expansion part to expand outwards. The protection cylinder is made of hard materials, so that the phenomenon that the shielding effect of the internal expansion part is influenced due to large deformation in the use process is avoided; because the outer tube is the pipe usually, when the protection section of thick bamboo adopted the cylinder structure, can realize seamless, the smooth connection of protection portion and outer tube, and the setting of through-hole is favorable to the inflation portion outwards to expand and form saccular protrusion, reaches the purpose of blocking the urethral orifice.
Preferably, the through hole is a circular hole, an elliptical hole or a strip-shaped hole. The shape of the through hole can be various as long as the requirement of outward expansion of the expansion part can be met.
Preferably, when the number of the through holes is multiple, the through holes are uniformly distributed along the circumferential direction of the protection cylinder respectively. After the inflation portion expands under the effect of outer tube internal pressure, can extend a protection section of thick bamboo through each through-hole respectively to it is protruding to form a plurality of sacks in the circumferencial direction of a protection section of thick bamboo, more is favorable to realizing the fixed to the catheter, also is favorable to realizing the anticreep function simultaneously.
Further, the edge of through-hole is provided with the arc transition. So as to eliminate the edge at the edge of the through hole, not only can avoid damaging the expansion part, but also can avoid the damage to the urethra in the process of inserting/pulling the ureter, and achieve the aim of further protecting the urethra.
Further, the outer diameter of the protection cylinder is equal to the outer diameter of the outer pipe. Therefore, no edges or non-smooth places are arranged between the protective barrel and the outer tube, and the urethral canal is not damaged and discomfort of a patient is not caused in the process of intubation and tube drawing.
In one scheme, a protective layer is arranged on the outer side of the protective barrel and connected with the outer tube, and the protective layer is made of the same material as that of the outer tube. The outer tube adopts soft rubber materials to make usually, and the protective layer adopts the material the same with the outer tube, and the texture is soft, can realize the function of buffering, avoids the direct urethra contact of a protection section of thick bamboo of stereoplasm, is convenient for make again.
In another scheme, the protection cylinder is embedded in the outer pipe, the outer pipe is provided with an opening corresponding to the through hole, and the expansion part is arranged in the outer pipe and at a position corresponding to the protection cylinder. That is, in this aspect, the expansion portion is not formed integrally with the outer tube, but is formed separately from the outer tube, and the film having elastic deformability is expanded by the internal pressure to form the bag-like protrusion.
Preferably, the outer tube and/or the expansion part are made of rubber materials respectively, and the thickness of the expansion part is smaller than that of the outer tube. So that the expansion part has certain elasticity and can be expanded outwards under certain internal pressure to form a saccular bulge.
In more perfect scheme, still include the inner tube, the inner tube set up in the inside of outer tube, the inner tube is used for the catheterization, and the one end of inner tube is provided with the inlet, and the other end is provided with the liquid outlet, keep away from on the outer tube the one end of inflation portion is provided with the valve, the valve is used for maintaining the interior pressure of outer tube.
Preferably, the valve is a water injection soft valve or an inflation valve.
Compared with the prior art, the urethral catheter capable of preventing the edges and corners formed by pressure loss from damaging the urethra provided by the invention has the advantages that the structure is simple, the design is reasonable, in the actual use process, the expansion part of the outer tube can be expanded outwards and form the saccular protrusion through the pressurization of the outer tube, so that the urethral catheter can be clamped at the urethra opening, the urethral catheter is fixed and prevented from falling off, the expansion part after the pressure loss becomes flat can be accommodated in the protection part when the urethral catheter is dismounted, and the sharp edges and corners formed by the expansion part are prevented from being directly exposed out of the outer tube, so that the edges and the urethra can be effectively prevented from being in direct contact, the aims of protecting the urethra and improving the comfort of a patient are achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view (real photograph) of a dual lumen catheter of the prior art prior to use.
Fig. 2 is a schematic view (real photograph) of the catheter provided in fig. 1, when in use, a fluid is injected into the outer tube to form a capsular bulge.
Fig. 3 is a schematic view (real photograph) of the fluid in the outer tube (internal pressure is removed) and the bladder-shaped bulge is collapsed to form an angle.
Fig. 4 is a schematic view of a catheter provided in example 1 of the present invention.
Fig. 5 is a partial schematic view of fig. 4.
Fig. 6 is a view (schematic longitudinal sectional view) along a-a direction of fig. 5.
Fig. 7 is a view from the direction B-B of fig. 5 (cross-sectional view).
Fig. 8 is a schematic cross-sectional view of a catheter according to example 1 of the present invention, in which the balloon-like protrusion is formed by outward expansion of the expanded portion under internal pressure.
Fig. 9 is a cross-sectional view of the catheter provided in fig. 8, wherein the balloon portion collapses upon loss of internal pressure and forms an angle within the interior of the protective sleeve.
Fig. 10 is a schematic cross-sectional view of a urinary catheter provided in example 1 of the present invention, before use.
Fig. 11 is a schematic cross-sectional view of the catheter of fig. 10, wherein the balloon-like protrusion is formed by outward expansion of the expanded portion under internal pressure.
Fig. 12 is a cross-sectional view of the urinary catheter provided in fig. 11, wherein the bulge has collapsed after the internal pressure is lost and has been angled inside the protective sleeve.
Fig. 13 is a longitudinal cross-sectional structural schematic view of another urinary catheter provided in example 1 of the present invention.
Fig. 14 is a longitudinal cross-sectional structural schematic view of a urinary catheter provided in example 2 of the present invention.
Fig. 15 is a schematic cross-sectional structure of fig. 14.
Description of the drawings
Outer tube 100, saccular protrusion 101, edge 102, valve 103,
An inner tube 200, a liquid inlet 201, a liquid outlet 202,
An expansion part 300,
Protection part 400, protection cylinder 401, through hole 402, arc transition 403, protective layer 404.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 4, 5, 6 and 7, the catheter for preventing the urethral canal from being damaged by the pressure loss includes an outer tube 100 and a protective part 400 disposed on the outer tube 100, wherein the outer tube 100 is provided with an expansion part 300, the expansion part 300 is disposed inside the protective part 400, and the expansion part 300 is used for passing through the protective part 400 and expanding outwards under the action of the internal pressure and is used for being received in the protective part 400 after the internal pressure is lost. In the scheme provided by this embodiment, by providing the protection portion 400 at the outer side of the expansion portion 300, when the urinary catheter is inserted in place and needs to be fixed, the expansion portion 300 provided in the outer tube 100 can be expanded outwards under the action of the internal pressure of the outer tube 100 (the internal pressure can be formed by injecting water or inflating air into the outer tube 100) to form the bag-shaped protrusion 101, so as to be clamped at the urethral orifice of a patient, thereby fixing the urinary catheter, and effectively preventing the urinary catheter from falling off automatically, thereby achieving the purpose of preventing the urinary catheter from falling off; when the catheter needs to be pulled out, need first to let out the interior pressure of removing outer tube 100, after outer tube 100 lost interior pressure, inflation portion 300 can become flat and automatic inside of accomodating protection portion 400, make inflation portion 300 lose the inside that the edges and corners 102 that form after the pressure hide protection portion 400, protection portion 400 can reach the purpose of keeping apart inflation portion 300 through sheltering from to inflation portion 300 promptly, thereby avoid edges and corners 102 and urethra direct contact, not only can effectively protect patient's urethra at the in-process of pulling out the pipe, avoid the damage of urethra, and can make the process of pulling out the pipe more smooth and easy, thereby effectively strengthen patient's comfort.
As described in the background of the invention, fig. 1, 2 and 3, in combination with clinical trials, the prior art catheters are pressurized to form the capsular protrusion 101, and after being deflated due to the pressure loss, the outer tube 100 is inevitably formed with the corner 102, as shown in fig. 3, and in order to eliminate the influence of the corner 102, those skilled in the art can easily think of some conventional solutions, which generally cannot completely, completely and effectively solve the problem; for example, one solution is: the thickness of the expanded portion 300 can be reduced so that the formed corner 102 has less rigidity, and although the damage to the urethra can be reduced, the influence of the corner 102 on the urethra cannot be completely eliminated; as another example, another scheme is: the internal pressure value is strictly controlled (namely, the water injection amount or the air inflation amount is strictly controlled), so that the internal pressure is kept in a proper range, the expansion part 300 can form the saccular protrusion 101 under the action of the internal pressure, the over-expansion of the expansion part 300 can be avoided, more serious inelastic deformation occurs, the edge angle 102 formed after the internal pressure is lost is sharper, and the range is larger, but in actual operation, medical workers hardly precisely control the water injection amount and the air inflation amount, so that the formation of the edge angle 102 cannot be completely avoided, and the problems existing in the background art cannot be effectively solved, wherein the description is not given one by one.
In a preferred embodiment, the protection part 400 is smoothly disposed on the outer tube 100, as shown in fig. 4. That is, the protecting part 400 is not only fixed to the outer tube 100, but also there is no corner 102 or any unsmooth place between the protecting part 400 and the outer tube 100, so that the catheter will not cause damage to the urethra and discomfort to the patient during intubation and extubation.
In a preferred embodiment provided by the present embodiment, the protection part 400 includes a protection cylinder 401 having a cylindrical structure, as shown in fig. 4-12, the protection cylinder 401 is made of a hard material, so as to avoid large deformation during use, thereby affecting the shielding effect on the inner expansion part 300; the side wall of the protective cylinder 401 is provided with one or more through holes 402, and the through holes 402 are used for outward expansion of the expansion part 300; because the outer tube 100 is usually a circular tube, when the protection cylinder 401 adopts a cylindrical structure, seamless and smooth connection between the protection part 400 and the outer tube 100 can be realized, and the arrangement of the through hole 402 is beneficial to the outward expansion of the expansion part 300 and the formation of the saccular protrusion 101, so that the purpose of clamping the urethral orifice is achieved. 4-9, the side wall of the protective cylinder 401 may be provided with one through hole 402, two through holes 402, three through holes 402 … …, and the number of the through holes 402 may be determined according to actual situations; in a further aspect, when the number of the through holes 402 is plural, the through holes 402 may be uniformly distributed along the circumferential direction of the protective cylinder 401. After the expansion part 300 expands under the action of the internal pressure of the outer tube 100, the through holes 402 can respectively extend out of the protective tube 401, and a plurality of saccular protrusions 101 are formed in the circumferential direction of the protective tube 401, so that the catheter can be fixed more favorably, and the anti-falling function can be realized more favorably.
In this embodiment, the shape of the through hole 402 is not limited, so that the shape of the through hole 402 may be various, as long as the requirement of outward expansion of the expansion part 300 is satisfied, but in a preferred embodiment, the through hole 402 may be a circular hole, an elliptical hole, or an elongated hole.
As an example, as shown in fig. 4-9, a circular through hole 402 is formed on the side surface of the protection cylinder 401; under the action of the internal pressure, the expansion part 300 can extend out of the protection cylinder 401 through the circular through hole 402 and form a bag-shaped bulge 101 outside the protection cylinder 401, as shown in fig. 8; when the internal pressure of the outer tube 100 is reduced, the saccular protrusion 101 is deflated and automatically retracts into the protection tube 401, and even if the ridge 102 is formed on the expansion part 300, the ridge 102 is inevitably inside the protection tube 401, so that the protection tube 401 can isolate the ridge 102 from the urethra, thereby completely and completely eliminating the influence of the ridge 102 on the urethra and the patient.
As another example, the side surface of the protection cylinder 401 is provided with three circular through holes 402, and the three circular through holes 402 are respectively and uniformly distributed along the circumferential direction of the protection cylinder 401, as shown in fig. 10-12; under the action of the internal pressure, the expansion part 300 can extend out of the protection cylinder 401 through the circular through hole 402, and three saccular protrusions 101 are formed outside the protection cylinder 401, as shown in fig. 12; when the internal pressure of the outer tube 100 is reduced, the saccular protrusion 101 is deflated and automatically retracts into the protection tube 401, and even if the expansion part 300 is provided with the corners 102 (usually three corners 102), the corners 102 are necessarily in the protection tube 401, so that the protection tube 401 can isolate all the corners 102 from the urethra, thereby completely and completely eliminating the influence of the corners 102 on the urethra and the patient.
In a further aspect, the edge of the through hole 402 is provided with an arc transition 403, as shown in fig. 7 or fig. 10; so as to eliminate the edge of the through hole 402, not only can avoid damaging the expansion part 300, but also can avoid the damage of the urethra in the process of inserting/pulling the ureter, and achieve the purpose of further protecting the urethra.
As shown in fig. 6 to 12, in a preferred embodiment, the outer diameter of the protection cylinder 401 is equal to the outer diameter of the outer tube 100. Therefore, the edge angle 102 or any non-smooth place is not arranged between the protective barrel 401 and the outer tube 100, so that the urethral canal can not be damaged and the discomfort of a patient can not be caused in the process of intubation and tube drawing of the catheter.
The expansion part 300 may be preferably made of a rubber material so as to have an elastic deformation capability, and may be elastically deformed to expand by the internal pressure; in a preferred embodiment, the outer tube 100 and/or the expansion part 300 may be made of rubber material, and the thickness of the expansion part 300 is smaller than that of the outer tube 100, as shown in fig. 6-12, which is more convenient for the expansion part 300 to expand outwards under a certain pressure and form the capsular protrusion 101.
In a further scheme provided in this embodiment, a protective layer 404 is disposed outside the protective cylinder 401, as shown in fig. 13, the protective layer 404 is connected to the outer tube 100, and the material of the protective layer 404 is the same as that of the outer tube 100. The outer tube 100 is usually made of soft rubber material, the protective layer 404 can be made of the same material as the outer tube 100, the texture is soft, the buffer function can be realized, the hard protective tube 401 is prevented from directly contacting with the urethra, the manufacturing is convenient, and the cost is low.
As shown in fig. 4 and 5, in a more complete scheme, the urinary catheter further includes an inner tube 200, the inner tube 200 is disposed inside the outer tube 100, the inner tube 200 is used for guiding urine, one end of the inner tube 200 is provided with a liquid inlet 201, the other end is provided with a liquid outlet 202, one end of the outer tube 100, which is far away from the expansion portion 300, is provided with a valve 103 (or called a joint), and the valve 103 is used for maintaining the internal pressure of the outer tube 100. It is understood that the valve 103 can be a water filling soft valve or an inflation valve commonly used in the existing catheter; when the catheter is used, a medical staff can connect the valve 103 by using a syringe and fill water or ventilate the outer tube 100 by using the syringe, so that the internal pressure of the inner tube 200 is increased, the expansion part 300 can expand under the action of the internal pressure to form the saccular protrusion 101, and after the medical staff takes off the syringe, the valve 103 is automatically closed, so that the pressure in the outer tube 100 is kept unchanged, the size of the saccular protrusion 101 is kept unchanged, and the catheter can be stably arranged in a urethra for a long time; when needing to remove this catheter, medical personnel need connect valve 103 from new syringe to utilize the syringe to take out water or the air in outer tube 100, reduce the interior pressure of outer tube 100, thereby make inflation portion 300 can become flat and retract in protection section of thick bamboo 401, thereby be convenient for smooth pulling out this catheter.
Example 2
The main difference between this embodiment 2 and the above embodiment 1 is that in the urinary catheter provided in this embodiment, the protective cylinder 401 is embedded in the outer tube 100, the outer tube 100 is provided with an opening corresponding to the through hole 402, and the expansion part 300 is disposed in the outer tube 100 at a position corresponding to the protective cylinder 401; as shown in fig. 14 and fig. 15, in this embodiment, the expansion part 300 may not be integrally formed with the outer tube 100, but may be a film separately disposed in the outer tube 100 and having elastic deformation capability, under the action of the internal pressure, the expansion part 300 may expand and extend out of the outer tube 100 through the through hole 402 and the opening to form the saccular protrusion 101, which results in the purpose of fixing the urinary catheter and preventing the urinary catheter from automatically falling off, in this process, the hard protection barrel 401 may keep the shape of the outer tube 100 unchanged, and when the outer tube 100 loses pressure, the saccular protrusion 101 may be deflated and automatically retract into the protection barrel 401, and the protection barrel 401 forms the edge 102, at this time, the protection barrel 401 may isolate the expansion part 300 from the urethra, thereby completely and completely eliminating the influence of the edge 102 on the urethra and the patient.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. The utility model provides a catheter, its characterized in that, include the outer tube with set up in the protection portion of outer tube, the outer tube is provided with inflation portion, just inflation portion set up in the inside of protection portion, inflation portion are used for passing protection portion and outside inflation under the effect of internal pressure, and are used for accomodating in the protection portion after losing internal pressure.
2. A catheter according to claim 1, wherein said protecting portion is smoothly provided to said outer tube.
3. A catheter according to claim 1, wherein the protective part comprises a protective cylinder of cylindrical configuration, said protective cylinder being made of a hard material, the side wall of the protective cylinder being provided with one or more through holes for outward expansion of the bulge.
4. A catheter according to claim 3 wherein said through holes are circular or elliptical or elongated holes.
5. A catheter according to claim 3, wherein when the number of said through holes is plural, the through holes are uniformly distributed along the circumferential direction of said protective cylinder.
6. A catheter according to claim 3, wherein the edges of the through-holes are provided with an arcuate transition.
7. A catheter according to any of claims 3-6 wherein a protective layer is provided on the outside of the protective sleeve, said protective layer being attached to the outer tube and being of the same material as the outer tube.
8. A catheter according to any of claims 3-6, wherein said protective barrel is embedded in said outer tube, and said outer tube is provided with openings corresponding to said through holes, and said bulge is provided in said outer tube at a position corresponding to said protective barrel.
9. A catheter according to any of claims 1-6 wherein the outer tube and/or the expanded portion are each made of a rubber material and the thickness of the expanded portion is smaller than the thickness of the outer tube.
10. A catheter according to any of claims 1 to 6, further comprising an inner tube arranged inside said outer tube, said inner tube being adapted for urinary catheterisation, said inner tube being provided with a liquid inlet at one end and a liquid outlet at the other end, said outer tube being provided with a valve at the end remote from said expanded portion, said valve being adapted to maintain the internal pressure of the outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910955344.0A CN110548210B (en) | 2019-10-09 | 2019-10-09 | Catheter for preventing corner formed by decompression from damaging urethra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910955344.0A CN110548210B (en) | 2019-10-09 | 2019-10-09 | Catheter for preventing corner formed by decompression from damaging urethra |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110548210A true CN110548210A (en) | 2019-12-10 |
| CN110548210B CN110548210B (en) | 2024-02-20 |
Family
ID=68742438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910955344.0A Active CN110548210B (en) | 2019-10-09 | 2019-10-09 | Catheter for preventing corner formed by decompression from damaging urethra |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110548210B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6613067B1 (en) * | 2000-06-06 | 2003-09-02 | Scimed Life Systems, Inc. | Balloon protector |
| CN201030133Y (en) * | 2007-03-29 | 2008-03-05 | 上海市第八人民医院 | Urinary catheter placer |
| US20120059401A1 (en) * | 2010-03-12 | 2012-03-08 | Quatro Vascular Pe Ltd. | Device and method for compartmental vessel treatment |
| CN103930158A (en) * | 2011-10-07 | 2014-07-16 | W.L.戈尔及同仁股份有限公司 | Balloon assemblies having controllably variable topographies |
| CN107106822A (en) * | 2014-11-17 | 2017-08-29 | 夸超脉管私人有限公司 | Balloon catheter system |
| CN207041734U (en) * | 2017-01-20 | 2018-02-27 | 苏州宇度医疗器械有限责任公司 | Anti- infection Foley catheter |
| CN211584805U (en) * | 2019-10-09 | 2020-09-29 | 四川省肿瘤医院 | Catheter capable of preventing edges and corners from directly contacting urethra |
-
2019
- 2019-10-09 CN CN201910955344.0A patent/CN110548210B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6613067B1 (en) * | 2000-06-06 | 2003-09-02 | Scimed Life Systems, Inc. | Balloon protector |
| CN201030133Y (en) * | 2007-03-29 | 2008-03-05 | 上海市第八人民医院 | Urinary catheter placer |
| US20120059401A1 (en) * | 2010-03-12 | 2012-03-08 | Quatro Vascular Pe Ltd. | Device and method for compartmental vessel treatment |
| CN103930158A (en) * | 2011-10-07 | 2014-07-16 | W.L.戈尔及同仁股份有限公司 | Balloon assemblies having controllably variable topographies |
| CN107106822A (en) * | 2014-11-17 | 2017-08-29 | 夸超脉管私人有限公司 | Balloon catheter system |
| CN207041734U (en) * | 2017-01-20 | 2018-02-27 | 苏州宇度医疗器械有限责任公司 | Anti- infection Foley catheter |
| CN211584805U (en) * | 2019-10-09 | 2020-09-29 | 四川省肿瘤医院 | Catheter capable of preventing edges and corners from directly contacting urethra |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110548210B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2912981A (en) | Inflatable retention catheter | |
| US3726283A (en) | Body-retained catheter | |
| EP1581297B1 (en) | Catheter with unitary component | |
| US4553959A (en) | Urethral catheter | |
| US5609583A (en) | Collapsible catheter | |
| EP1140272B1 (en) | Gastric balloon catheter with improved balloon orientation | |
| US4022216A (en) | Urological catheter | |
| US6096013A (en) | Collapsible urinary catheter | |
| US20040044307A1 (en) | Urinary catheters | |
| CN1131385A (en) | Urethral plug having adhesive sealing capabilities | |
| WO1994015657A1 (en) | Apparatus and method for maintaining a tracheal stoma | |
| EP1653907A1 (en) | Catheter having a balloon member recessedly attached thereto | |
| US20170000642A1 (en) | Inflationless retention cuff for fluid collection devices | |
| EP1565228A1 (en) | Catheter having a balloon member invertedly attached thereto | |
| US20080125757A1 (en) | Indwelling urinary catheter with enlarged sealing surface | |
| CN211584805U (en) | Catheter capable of preventing edges and corners from directly contacting urethra | |
| CN110548210A (en) | Catheter capable of preventing edges and corners formed by pressure loss from damaging urethra | |
| CN106512180B (en) | Peritoneal cavity drainage tube | |
| US4237894A (en) | Male catheter | |
| US20140276502A1 (en) | Retention Cuff for Bowel Management System | |
| CN211066944U (en) | Intrauterine adhesion prevention structure | |
| EP4199991B1 (en) | A self-retaining enema nozzle and an enema system comprising said enema nozzle | |
| CN216676531U (en) | Ventilation, decompression and drainage device in anus and intestine | |
| WO2019034894A1 (en) | Catheter with angled and/or shaped ports | |
| CN215024949U (en) | Urine leakage prevention catheter for male |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |