CN113813493A

CN113813493A - Catheter

Info

Publication number: CN113813493A
Application number: CN202111240514.0A
Authority: CN
Inventors: 王龙; 黄金
Original assignee: Third Xiangya Hospital of Central South University
Current assignee: Third Xiangya Hospital of Central South University
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2021-12-21

Abstract

The invention discloses a catheter, which relates to the technical field of medical instruments and comprises: the urine drainage tube comprises a tube body and a front blind end, wherein the center of the tube body is a urine drainage channel, the inner end of the tube body and the front blind end are provided with a plurality of garlic clove-shaped saccules used for preventing dropping, a urine guide port communicated with the urine drainage channel is formed between every two adjacent garlic clove-shaped saccules, and an inflation joint on the tube body is communicated with the garlic clove-shaped saccules through a saccule inflation channel. This application has increased the effective area of urine flow outlet, prevents to block up, simultaneously, also can the drainage go out partial blood clot and lithangiuria etc to catheterization mouth and garlic clove form sacculus integration have reduced the position of catheterization mouth at the bladder opening part, and abundant drainage reduces residual urine volume, has reduced the probability of leaking urine.

Description

Catheter

Technical Field

The invention relates to the technical field of medical instruments, in particular to a catheter.

Background

The catheter is a tubular medical instrument which is inserted into the bladder through the urethra and drains urine, and is widely used in clinical work, such as unsmooth urine excretion caused by coma, paraplegia, urine retention, urinary surgery operation, bladder and urethra tumors and the like. After the catheter is inserted into the bladder, an air bag is arranged near the inner end of the catheter to fix the catheter to stay in the bladder and not to be easily separated, and the drainage tube is connected with a urine bag to collect urine. When the catheter is used, the catheter is often blocked, particularly for patients who suffer from blood clots and urinary calculus formed by wound bleeding after urinary surgery or patients who suffer from more purulent and sticky secretion formed by the upper urinary tract, once the catheter is blocked, urine or flushing fluid cannot be timely drained out of the body, the urinary tract infection probability is increased, and great pain is brought to the patients.

The existing catheters are generally dredged by pressurizing through hollow needles, some of the catheters are provided with a filter screen device outside the side holes to avoid blockage, the effective area of urine diversion adopting the two modes is narrow, the urine can not be drained thoroughly in time, and the blockage rate is high. Some urethral catheters's catheterization mouth is the self-expanding opening of lantern skeleton appearance, reduces stifled pipe probability through the bore that increases the catheterization mouth, also can drain out partial blood clot and lithangiuria, but the self-expanding opening section of lantern skeleton appearance is made by memory metal material, and the material limitation is big, and is with high costs, and under the condition of bladder anuresis or urine shortage, the risk that the intact inflation of memory alloy material's lantern skeleton exists and expandes, and the practicality is relatively poor.

Therefore, a catheter which has good flow guiding effect, is not easy to block the catheter and is convenient to operate is urgently needed.

Disclosure of Invention

In view of the above, the present invention provides a urinary catheter to solve the above technical problems.

In order to achieve the purpose, the invention provides the following technical scheme:

a urinary catheter, comprising: the urine drainage device comprises a tube body and a front blind end, wherein the center of the tube body is an urine drainage channel, the inner end of the tube body and the front blind end are provided with a plurality of garlic clove-shaped saccules for preventing dropping, two adjacent garlic clove-shaped saccules are formed between the garlic clove-shaped saccules and communicated with the urine drainage channel, and an inflation joint on the tube body is communicated with the garlic clove-shaped saccules through a saccule inflation channel.

Further, a one-way valve is arranged on the inflation connector.

Further, still including wearing to establish this internal stay cord of body, the outer end of body be equipped with the side guide lead pipe of body intercommunication, the cover is equipped with to the pressure disk on the side guide lead pipe, just the opening part of side guide lead pipe is equipped with the end cover, the outer end that supports the pressure disk is equipped with the cover the bow-shaped actuating lever of end cover, the one end of stay cord with the front blind end is connected, the other end of stay cord passes to be located perforation on the end cover with bow-shaped actuating lever is connected, wherein, be equipped with in the perforation and be used for sealed sealing washer.

Further, a plurality of return springs are arranged between the pressure resisting plate and the end cover.

Furthermore, the diameter of the inner hole of the pressing plate is larger than the outer diameter of the end cover, a plurality of protruding blocks which are distributed annularly are arranged on the side face of the end cover, sliding grooves which enable the corresponding protruding blocks to pass through are formed in the side wall of the inner hole of the pressing plate, a plurality of guide pillars are arranged on the pressing plate, guide holes which are in sliding fit with the corresponding guide pillars are formed in the protruding blocks, and the reset springs are sleeved on the corresponding guide pillars.

Furthermore, the flushing interface arranged on the tube body is communicated with the urethral catheterization openings through a flushing and administration integrated channel.

Furthermore, the number of the garlic clove-shaped saccules is 4-6.

Furthermore, all the garlic clove-shaped balloons are mutually communicated, and a plurality of garlic clove-shaped balloons are uniformly distributed in an annular shape.

Furthermore, the balloon inflation channel and the flushing and administration integrated channel are both arranged in the inner wall of the tube body.

Furthermore, the front blind end and the pipe body are made of silica gel materials.

The technical scheme can show that the invention has the advantages that: according to the urine drainage tube, the garlic clove-shaped balloons are arranged between the inner end and the front blind end of the tube body, and the urine drainage port communicated with the urine drainage channel is formed between every two adjacent garlic clove-shaped balloons, so that the effective area of the urine outflow port is increased, the blocking probability is obviously reduced, and meanwhile, partial blood clots, small stones and the like can be drained; catheterization mouth and garlic clove form sacculus integration, reduced the position of catheterization mouth at the bladder opening part, abundant drainage, reduce residual urine volume, reduced the probability of leaking urine, in addition, this application is provided with the stay cord, when the catheter appears blockking up occasionally, make the front blind end remove and drive each garlic clove form sacculus synchronous motion through the pulling stay cord, realize opening and shutting of catheterization mouth, crowd the bits of broken glass in order to do benefit to the discharge with clot and lithangiute, the mediation catheter, and convenient for operation is laborsaving, medical personnel's the work degree of difficulty has been reduced.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a catheter structure according to the present invention;

FIG. 2 is a second schematic view of the catheter structure of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the end cap construction of the present invention;

fig. 5 is a cross-sectional view of a tubular body of the present invention.

List of reference numerals: the device comprises a garlic clove-shaped balloon 1, a urethral catheterization opening 2, a balloon inflation channel 3, an inflation joint 31, a washing and drug administration integrated channel 4, a flushing port 41, a tube body 5, a drainage outlet 51, a front blind end 6, a pull rope 7, a pressing disc 71, an arc-shaped driving rod 711, a guide pillar 712, an end cover 72, a perforation 721, a projection 722, a sealing ring 73 and a return spring 74.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the present invention provides a urinary catheter comprising: body 5 and preceding cecum 6, the center of body 5 is urine discharge passage, body 5 the inner with be equipped with a plurality of garlic lamella form sacculus 1 that are used for the anticreep between the preceding cecum 6, adjacent two be formed with between the garlic lamella form sacculus 1 with the catheterization mouth 2 of urine discharge passage intercommunication sets up and is in inflation joint 31 on the body 5 passes through sacculus inflation passage 3 and a plurality of garlic lamella form sacculus 1 all communicates.

Specifically, please refer to fig. 1, a plurality of garlic clove form sacculus 1 constitute the fretwork spheroid structure, have a fixed action, can prevent that the catheter from droing, urethral orifice 2 (the clearance that forms between two adjacent garlic clove form sacculus 1 promptly) and a plurality of garlic clove form sacculus 1 enclose the cavity intercommunication that closes formation, cavity and urine discharge passage intercommunication, the outer end of body 5 is drainage export 51, the urine that gets into urine discharge passage from urethral orifice 2 passes through drainage export 51 and discharges, compare the current catheter of tradition, urethral orifice 2 of this catheter has bigger urine drainage area, the stifled pipe probability has been reduced, realize timely and thorough drainage, in addition, this garlic clove form sacculus 1 need not adopt special material preparation, be difficult for receiving the material restriction, and convenient operation, and is stable and reliable, use safer and relieved.

As shown in fig. 2 and fig. 3, the urinary catheter further comprises a pulling rope 7 penetrating through the inside of the catheter body 5, the outer end of the catheter body 5 is provided with a side guide tube 51 communicated with the catheter body 5, the side guide tube 51 is sleeved with a pressing plate 71, an opening of the side guide tube 51 is provided with an end cover 72, the outer end of the pressing plate 71 is provided with an arc-shaped driving rod 711 covering the end cover 72, one end of the pulling rope 7 is connected with the front blind end 6, the other end of the pulling rope 7 penetrates through a through hole 721 on the end cover 72 to be connected with the arc-shaped driving rod 711, wherein a sealing ring 73 for sealing is arranged in the through hole 721, the sealing ring 73 plays a role in sealing, so as to prevent urine from flowing out from the through hole 721, when the urinary catheter is occasionally blocked, the pulling rope 711 is driven to move by pulling the arc-shaped driving rod 711, so as to drive the front blind end 6 to reciprocate, the front blind end 6 reciprocates to drive each garlic clove-shaped saccule 1 to move synchronously, so that the urethral orifice 2 is opened and closed, blood clots and small stones are crushed to facilitate discharge, the urethral catheter is dredged, the operation is convenient, labor is saved, and the work difficulty of medical personnel is reduced.

In order to automatically reset the pulling rope 7 in time after the pulling rope 7 is loosened and the garlic clove-shaped saccule 1 is reset, a plurality of reset springs 74 are arranged between the pressing disc 71 and the end cover 72, so that the garlic clove-shaped saccule is easier to operate.

As shown in fig. 4, the diameter of the inner hole of the pressing plate 71 is greater than the outer diameter of the end cover 72, a plurality of protrusions 722 distributed annularly are disposed on the side surface of the end cover 72, a sliding groove for allowing the corresponding protrusion 722 to pass through is disposed on the side wall of the inner hole of the pressing plate 71, so that the pressing plate 71 is convenient to mount or dismount, a plurality of guide posts 712 are disposed on the pressing plate 71, guide holes slidably engaged with the corresponding guide posts 712 are disposed on the protrusions, the guide posts 712 play a role in guiding, so that the pressing plate 71 moves stably, the moving stability of the pull rope 7 is increased, and the return spring 74 is sleeved on the corresponding guide posts 712. The front blind end 6 and the tube body 5 are both made of silica gel materials, so that the catheter is almost free of stimulation, good in biocompatibility, free of foreign body sensation for patients, non-toxic and non-corrosive; the catheter has small damage to urethral mucosa in the process of catheter intubation, avoids the phenomenon that a patient is not suitable for pain in the process of catheter indwelling, obviously relieves the urine overflow, urethral burning pain and anxiety of the patient, is safer and more reliable to use, can set the inner end of the front blind end 6 into a smooth arc shape, and is convenient to insert the catheter.

Optionally, the quantity of garlic clove shape sacculus 1 is 4 ~ 6, and the quantity of garlic clove shape sacculus 1 also can set up to 7 or 8 etc. as long as can avoid blockking up, and can drainage partial blood clot and lithangiuria etc. can carry out the flexibility according to the actual use demand and user's age, sex and set up.

All garlic clove form sacculus 1 communicates each other, only needs like this to a garlic clove form sacculus 1 injection gas and water, can make all garlic clove form sacculus 1 inflation, raises the efficiency, easily operates, and is a plurality of garlic clove form sacculus 1 is annular evenly distributed, makes the more firm that this catheter is fixed.

For the convenience of operation, a one-way valve is arranged on the inflation connector 31, so that gas or water can be conveniently injected into the garlic clove-shaped balloon 1.

As shown in fig. 1, the flushing port 41 provided on the tube body 5 is communicated with each urethral catheterization opening 2 through the flushing and administration integrated channel 4, and the bladder of a special patient is filled with medicine or flushed through the flushing port 41 and the flushing and administration integrated channel 4.

As shown in fig. 5, the balloon inflation channel 3 and the flushing and administration integrated channel 4 are both arranged in the inner wall of the catheter body 5, so that the catheter has a more compact structure and is convenient to operate.

When the catheter is used, each garlic clove-shaped saccule 1 is placed in the bladder of a patient, gas is injected from an inflation port of an inflation joint 31, the injected gas enters the garlic clove-shaped saccule 1 through a saccule inflation channel 3, all the garlic clove-shaped saccules 1 are fully inflated and expanded, the expanded garlic clove-shaped saccule 1 is left in the bladder to fix the catheter and is not easy to fall off, a drainage outlet 51 is connected with a urine bag, urine enters a urine discharge channel through a urine inlet 2 and is finally led out through a drainage outlet 51, the urine drainage area of the catheter is large, timely and thorough drainage can be realized, the urine is fully drained in the urine with blood clots, the blood clots are prevented from entering the urine discharge channel, the blocking probability is reduced, and meanwhile, partial blood clots, small stones, floccules and the like can be drained out of the body through the urine guide port 2; when a small amount of blockage or unsmooth drainage occurs, the pull rope 7 is driven to move by pulling the arched driving rod 711, so that the blood clots and small stones are crushed and led out to dredge the catheter, the catheter is prevented from being replaced, and the use is convenient.

The urethral catheterization port 2 of the catheter is integrated with the garlic clove-shaped balloon 1, so that the position of the urethral catheterization port 2 at the opening of a bladder is reduced, the sufficient drainage is realized, the residual urine volume is reduced, the possibility of urine leakage is reduced, the risk of urinary infection is reduced due to the sufficient drainage, and the urethral catheterization port 2 is integrated with the garlic clove-shaped balloon 1, compared with the traditional method that the urethral catheterization port 2 is arranged on the front blind end 6, the length of the front blind end 6 is shortened by the catheter, so that the condition that when the bladder contracts, the front end of the catheter is wrapped by the bladder wall, the urethral catheterization port 2 is blocked, and the bladder mucous membrane is damaged, so that the hematuria is caused; the garlic clove form sacculus 1 of this catheter need not to adopt special material, and the limitation is little, and in addition, the stay cord of this application is convenient for operate, can easily dredge the catheter, and convenient operation has reduced medical personnel's the work degree of difficulty, and is reliable and stable, and the practicality is strong.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A urinary catheter, comprising: body (5) and preceding cecum (6), the center of body (5) is urine discharge passage, its characterized in that, the inner of body (5) with be equipped with between preceding cecum (6) a plurality of garlic clove form sacculus (1) that are used for the anticreep, adjacent two be formed with between garlic clove form sacculus (1) with catheterization mouth (2) of urine discharge passage intercommunication set up inflation joint (31) on body (5) are passed through sacculus inflation passage (3) and a plurality of garlic clove form sacculus (1) all communicates.

2. A catheter according to claim 1, wherein a one-way valve is arranged on the air inflation connector (31).

3. The urinary catheter according to claim 1, further comprising a pulling rope (7) penetrating through the catheter body (5), wherein a side guide tube (51) communicated with the catheter body (5) is arranged at the outer end of the catheter body (5), a pressing plate (71) is sleeved on the side guide tube (51), an end cover (72) is arranged at an opening of the side guide tube (51), an arched driving rod (711) covering the end cover (72) is arranged at the outer end of the pressing plate (71), one end of the pulling rope (7) is connected with the front blind end (6), the other end of the pulling rope (7) penetrates through a through hole (721) formed in the end cover (72) to be connected with the arched driving rod (711), and a sealing ring (73) for sealing is arranged in the through hole (721).

4. A catheter according to claim 3, wherein a plurality of return springs (74) are provided between the pressure disc (71) and the end cap (72).

5. The urinary catheter according to claim 3, characterized in that the inner hole diameter of the pressing disc (71) is larger than the outer diameter of the end cap (72), a plurality of protrusions (722) are annularly distributed on the side surface of the end cap (72), a sliding groove for the corresponding protrusion (722) to pass through is arranged on the side wall of the inner hole of the pressing disc (71), a plurality of guide posts (712) are arranged on the pressing disc (71), a guide hole in sliding fit with the corresponding guide post (712) is arranged on the protrusion, and the return spring (74) is sleeved on the corresponding guide post (712).

6. A catheter according to claim 1, wherein the flush port (41) provided in said tube body (5) communicates with each of said urine guide ports (2) through a flush administration integrated passage (4).

7. A catheter according to claim 1, wherein the number of said garlic clove shaped balloons (1) is 4-6.

8. A catheter according to claim 7, wherein all said garlic clove balloons (1) are in communication with each other and a plurality of said garlic clove balloons (1) are evenly distributed in a ring shape.

9. A catheter according to claim 6, wherein the balloon inflation channel (3) and the integrated irrigation and drug administration channel (4) are both provided in the inner wall of the catheter body (5).

10. A catheter according to claim 1, wherein said front dead end (6) and said body (5) are made of silicone.