CN113117215A

CN113117215A - Visual urethra expansion and catheterization device

Info

Publication number: CN113117215A
Application number: CN202110417142.8A
Authority: CN
Inventors: 邢增术; 李赛莲
Original assignee: Haikou Peoples Hospital
Current assignee: Haikou Peoples Hospital
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-07-16
Anticipated expiration: 2041-04-19
Also published as: CN113117215B

Abstract

The invention discloses a visual urethral dilating and urethral catheterization device, which comprises a hollow catheter and a guide part, the external part of the hollow catheter is provided with a urethral catheterization mechanism which is detachably connected with the hollow catheter, the guide part is provided with a telescopic mechanism which is fixedly connected with the guide part, the telescopic mechanism is provided with a plurality of connecting rods, the connecting rods and the telescopic mechanism are sleeved with hoses, one end of the hose is fixedly connected with the guide part, the other end of the hose is fixedly connected with the hollow conduit, be used for placing the sight glass in the hollow catheter, the sight glass inlay in the guide portion, the tip of guide portion with the tip of catheterization mechanism all with the tip looks parallel and level of sight glass, visual operation can be realized to this device, and safe and reliable carries out urethra expansion or keeps somewhere the catheter, reduces the risk of urethra (secondary) damage.

Description

Visual urethra expansion and catheterization device

Technical Field

The invention relates to a medical device, in particular to a visual urethra dilatation and catheterization device.

Background

In the clinical work of urinary surgery, for example, when a patient has urethral stricture, urethral injury, benign prostatic hyperplasia and acute urinary retention, urethral dilatation and/or indwelling catheterization may be performed according to actual conditions. Traditional urethra dilatation or catheterization can't judge the normal walking direction in urethra chamber because operate under the non-visual condition, are difficult to know the concrete condition at urethra injury position and urethra stenosis department, and the existence of dissection urethra pubic bone is curved down in addition for above-mentioned operation lacks the direction sense, and is comparatively blind, easily causes the failure, finally has to change the great cystostomy of wound, even moves open operation and resumes the continuity of urethra. Moreover, the above-mentioned operation under non-visualization may increase the risk of urethral (secondary) injury, even form urethral false tracts, with many complications and great pain for the patient. Therefore, the urethral dilatation or catheterization can be carried out under the visual condition, the normal running direction of the urethral cavity can be judged, the specific conditions of the injured part and the narrow part of the urethra can be known, and the urethral probe or the urethral catheter can safely and reliably pass through the pubic flexure of the urethra, the injured part or the narrow part of the urethra, so that the operation success rate is improved, the complications are reduced, and the safety of patients is improved.

Disclosure of Invention

In view of the above-mentioned existing problems, the technical problem to be solved by the present invention is to provide a urethral dilating and catheterization apparatus which can perform visual urethral dilation or catheterization and can safely and reliably pass a urethral probe or a urethral catheter through the pubic inferior bend of the urethra, the injured part of the urethra, or the narrow part of the urethra.

The invention provides a visual urethral dilatation and catheterization device, which comprises a hollow catheter and a guide part, wherein the outside of the hollow catheter is provided with a catheterization mechanism detachably connected with the hollow catheter, the guide part is provided with a telescopic mechanism fixedly connected with the guide part, the telescopic mechanism is provided with a plurality of connecting rods, the connecting rods and the outside of the telescopic mechanism are sleeved with a hose, one end of the hose is fixedly connected with the guide part, the other end of the hose is fixedly connected with the hollow catheter, an observation mirror is arranged in the hollow catheter and embedded in the guide part, the end part of the guide part and the end part of the catheterization mechanism are flush with the end part of the observation mirror, the pipe wall of the hollow catheter is provided with a first water delivery channel and a second water delivery channel for externally connecting with a water source, the periphery of the connecting rods is sleeved with a plurality of first semi-annular water bags and a plurality of second semi-annular water bags, the first semicircular water bags are communicated with one another, the second semicircular water bags are communicated with one another, the first semicircular water bags and the second semicircular water bags form a ring shape, the first water conveying channel is communicated with the first semicircular water bags, the first water conveying channel is communicated with the second semicircular water bags, and the first semicircular water bags and the second semicircular water bags are located in the hose.

Further, the observation mirror is a bladder fiber soft mirror, and a lens of the bladder fiber soft mirror is flush with the end of the guide part.

Furthermore, telescopic machanism includes sleeve pipe and movable rod, the movable rod is located in the sleeve pipe, the movable rod is relative the sleeve pipe slides, the connecting rod with be equipped with the third water delivery passageway of mutual intercommunication on the pipe wall of hollow pipe, the third water delivery passageway with the sleeve pipe is linked together, the third water delivery passageway is used for letting in external water source.

Furthermore, a film coating layer is arranged between the hoses.

Further, the edge of the guiding part is streamline.

Further, first semicircle ring-shaped water bag with the outside of second semicircle ring-shaped water bag all is equipped with the arc, the tip of arc is equipped with the connecting piece, the connecting piece with connecting rod fixed connection, the arc is used for the restriction first semicircle ring-shaped water bag with second semicircle ring-shaped water bag is at radial deformation.

Furthermore, the first water delivery channel, the second water delivery channel and the third water delivery channel are all provided with communicating pipes communicated with the first water delivery channel, the second water delivery channel and the third water delivery channel, and the communicating pipes are fixed together.

Further, the urethral catheterization mechanism comprises a urethral catheter with an end part removed, the end part of the urethral catheter is provided with an opening, the urethral catheter is provided with an air bag, and the air bag is communicated with an external air source.

Further, the guide part comprises a fixing part, a first conical part and a second conical part, the fixing part is detachably connected with the first conical part and the second conical part respectively, the surface of the first conical part is smooth, and the surface of the second conical part is frosted.

The invention has the beneficial effects that:

the invention relates to a visual urethral dilating and catheterization device, which is characterized in that a guide part, a connecting rod and a hollow catheter which are positioned on the same straight line are placed in a urethral cavity, when catheterization is needed, a catheterization mechanism is sleeved outside the guide part and the hollow catheter, then the urethral cavity of a patient is observed by using an observation mirror in the guide part, so that the urethral cavity is visualized, after the guide part reaches the lower bend of the pubic urethra, different water sources are respectively introduced through a first water delivery channel and a second water delivery channel, so that the volume of a second semi-annular water sac is increased due to water filling, after the second semi-annular water sac is propped open, due to the limiting effect of a hose, the observation mirror and the hollow catheter are respectively squeezed by the second semi-annular water sac, and the connecting rod is forced to bend by the pressure generated in the squeezing process, and the hose can appear certain fold phenomenon owing to buckle, through the water filling of first semicircular water pocket for the fold of the department of buckling of hose can obtain certain smoothing, and then smoothly passes through urethra pubic bone and crook down, utilize telescopic machanism's extension, can with the further back urethra intracavity that pushes of guide part, reach the bladder, at this in-process, because of this device advances along the normal line of walking direction in urethra chamber under visual condition, can pass through urethra pubic bone and crook injury position or narrow department of urethra safely and reliably, thereby improve the operation success rate, reduce the complication, improve patient's security.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a general block diagram of a urethral dilation and catheterization apparatus with visualization in accordance with the present invention;

FIG. 2 is a side elevational view, partially in section, of a urethral dilation and catheterization apparatus according to the present invention with visualization;

FIG. 3 is a top view of the interior of a flexible tube with a visual urethral dilation and catheterization apparatus of the present invention;

fig. 4 is a bottom view of the inside of a flexible tube with a visual urethral dilation and catheterization apparatus of the present invention.

In the figure, 1 is a hollow catheter, 2 is a bladder fiberscope, 3 is a guide part, 301 is a fixing part, 302 is a first cone part, 303 is a second cone part, 4 is a connecting rod, 5 is a hose, 6 is a first water delivery channel, 7 is a second water delivery channel, 8 is a first semi-annular water sac, 9 is a second semi-annular water sac, 10 is a connecting part, 11 is a catheter, 12 is an opening, 13 is an air sac, 14 is a communicating pipe, 15 is a sleeve, 16 is a movable rod, 17 is a third water delivery channel, 18 is a film coating layer, and 19 is an arc-shaped part.

Detailed Description

In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, the invention provides a visual urethral dilatation and catheterization device, which comprises a hollow catheter 1 and a guide part 3, wherein a catheterization mechanism detachably connected with the hollow catheter 1 is arranged outside the hollow catheter 1, a telescopic mechanism fixedly connected with the guide part 3 is arranged on the guide part 3, a plurality of connecting rods 4 are arranged on the telescopic mechanism, a hose 5 is sleeved outside the connecting rods 4 and the telescopic mechanism, one end of the hose 5 is fixedly connected with the guide part 3, the other end of the hose 5 is fixedly connected with the hollow catheter 1, an observation mirror is arranged in the hollow catheter 1 and embedded in the guide part 3, the end part of the guide part 3 and the end part of the catheterization mechanism are flush with the end part of the observation mirror, and a first water delivery channel 6 and a second water delivery channel 7 for externally connecting a water source are arranged on the wall of the hollow catheter 1, the periphery of the connecting rod 4 is sleeved with a plurality of first semi-ring-shaped water bags 8 and a plurality of second semi-ring-shaped water bags 9, the first semi-ring-shaped water bags 8 are communicated with each other, the second semi-ring-shaped water bags 9 are communicated with each other, the first semi-ring-shaped water bags 8 and the second semi-ring-shaped water bags 9 form a ring shape, the first water conveying channel 6 is communicated with the first semi-ring-shaped water bags 8, the first water conveying channel 6 is communicated with the second semi-ring-shaped water bags 9, the first semi-ring-shaped water bags 8 and the second semi-ring-shaped water bags 9 are both positioned in the hose 5, the guide part 3, the connecting rod 4 and the hollow catheter 1 which are positioned on the same straight line are placed in the urethral cavity, when the urethral catheterization is needed, the urethral catheterization mechanism is sleeved outside the guide part 3 and the hollow catheter 1, and then the urethral cavity of the patient is observed by using the observation mirror in the guide part 3, thereby realizing the visualization in the urethral cavity, when the guide part 3 reaches the inferior pubic curvature of the urethra, different amounts of water sources are respectively introduced through the first water delivery channel 6 and the second water delivery channel 7, so that the second semi-annular water sac 9 is enlarged in volume due to water filling, when the second semi-annular water sac 9 is expanded, due to the limiting effect of the hose 5, the second semi-annular water sac 9 can respectively press the observation mirror and the hollow catheter 1, the connecting rod 4 is bent through the pressure generated in the pressing process, and the hose 5 can generate a certain wrinkle phenomenon due to bending, and through the water filling of the first semi-annular water sac 8, the wrinkle at the bending part of the hose 5 can be smoothed to a certain extent, so that the guide part 3 can be further pushed into the posterior urethral cavity by the extension of the telescopic mechanism, the urethral probe or the urethral catheter is pushed along the normal walking direction of the urethral cavity under the visual condition in the process of directly reaching the bladder, and can safely and reliably pass through the inferior pubic curvature of the urethra, the injured part of the urethra or the narrow part of the urethra, so that the operation success rate is improved, the complications are reduced, and the safety of a patient is improved.

Specifically, the observation mirror is a soft bladder fiber mirror 2, the lens of the soft bladder fiber mirror 2 is flush with the end of the guide part 3, and the soft bladder fiber mirror 2 can deform along with the deformation of the device according to the elasticity of the soft bladder fiber mirror 2 when the soft bladder fiber mirror 2 is used, so that the condition in the urethral cavity can be better observed.

Specifically, telescopic machanism includes sleeve pipe 15 and movable rod 16, movable rod 16 is located in the sleeve pipe 15, movable rod 16 is relative sleeve pipe 15 slides, connecting rod 4 with be equipped with the third water delivery channel 17 of mutual intercommunication on the pipe wall of hollow pipe 1, third water delivery channel 17 with sleeve pipe 15 is linked together, third water delivery channel 17 is used for letting in external water source, fills external water source into in the third water delivery channel 17 for the water pressure that the water source produced will the movable rod 16 backs down, and then makes the movable rod 16 promotes guide part 3 forward motion, is convenient for strut urethra scar tissue, and simultaneously, partial water source can be along sleeve pipe 15 with gap between the movable rod 16 flows in the hose 5, and then will the space in the hose 5 is filled up, makes the surface of hose 5 is comparatively smooth, the device can move in the urethral cavity conveniently, and after the connecting rod 4 is broken due to excessive stress, the water source in the hose 5 and the elasticity of the hose 5 can be effectively buffered.

Specifically, be equipped with laminating layer 18 between the hose 5, through laminating layer 18's effect, can link together hose 5 improves the area of contact with the urethra chamber, reduces the risk that the urethra chamber received the damage.

Specifically, the edge of the guide portion 3 is streamlined.

Specifically, first semicircle ring shape water pocket 8 with the outside of second semicircle ring shape water pocket 9 all is equipped with arc 19, the tip of arc 19 is equipped with connecting piece 10, connecting piece 10 with connecting rod 4 fixed connection, arc 19 is used for the restriction first semicircle ring shape water pocket 8 with second semicircle ring shape water pocket 9 is at radial deformation, through arc 19 with the cooperation of connecting piece 10, can effectual restriction first semicircle ring shape water pocket 8 with the random deformation of second semicircle ring shape water pocket 9 ensures the reliability when this device uses.

Specifically, the first water delivery channel 6, the second water delivery channel 7 and the third water delivery channel 17 are respectively provided with a communicating pipe 14 communicated with the first water delivery channel, the communicating pipes 14 are fixed together, and an external water source can be introduced more conveniently through the effect of the communicating pipes 14.

Specifically, catheterization mechanism is including getting rid of catheter 11 of tip, catheter 11's tip is equipped with opening 12, be equipped with gasbag 13 on catheter 11, gasbag 13 is linked together with external air supply, when the catheter is kept somewhere to needs, will catheter 11 cover the outside of guide part can carry out the operation of keeping somewhere the catheterization, when catheter 11's tip gets into the bladder cavity after, through right gasbag 13 inflates, makes gasbag 13 inflation and chucking are in bladder neck department, then will except that other parts of catheter 11 are taken out from the urethra intracavity.

Specifically, the guide part 3 includes a fixing member 301, a first tapered part 302 and a second tapered part 303, the fixing member 301 is detachably connected to the first tapered part 302 and the second tapered part 303, the surface of the first tapered part 302 is smooth, the surface of the second tapered part 303 is frosted, and when urethral dilation is required, only the first tapered part 302 needs to be mounted on the fixing member 301; when the catheter needs to be indwelling, the second cone part 303 is mounted on the fixing part 301, and the guide part 3 and the catheter 11 cannot move relatively under the action of relative friction force between the second cone part 303 and the catheter 11, so that the device can be effectively used.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A urethral dilation and catheterization device with visualization is characterized by comprising a hollow catheter and a guide part, wherein a catheterization mechanism detachably connected with the hollow catheter is arranged outside the hollow catheter, a telescopic mechanism fixedly connected with the guide part is arranged on the guide part, a plurality of connecting rods are arranged on the telescopic mechanism, a hose is sleeved outside the connecting rods and the telescopic mechanism, one end of the hose is fixedly connected with the guide part, the other end of the hose is fixedly connected with the hollow catheter, an observation mirror is arranged in the hollow catheter and embedded in the guide part, the end part of the guide part and the end part of the catheterization mechanism are flush with the end part of the observation mirror, a first water delivery channel and a second water delivery channel which are used for external water source are arranged on the wall of the hollow catheter, a plurality of first semi-annular water bags and a plurality of second semi-annular water bags are sleeved on the periphery of the connecting rods, the first semicircular water bags are communicated with one another, the second semicircular water bags are communicated with one another, the first semicircular water bags and the second semicircular water bags form a ring shape, the first water conveying channel is communicated with the first semicircular water bags, the first water conveying channel is communicated with the second semicircular water bags, and the first semicircular water bags and the second semicircular water bags are located in the hose.

2. A urethral dilation and catheterization apparatus with visualization as claimed in claim 1, wherein the scope is a soft bladder fiberscope, the lens of which is flush with the end of the guide.

3. The urethral dilation and catheterization apparatus with visualization of claim 1, wherein the telescoping mechanism comprises a sleeve and a movable rod, the movable rod is located in the sleeve, the movable rod slides relative to the sleeve, the connecting rod and the wall of the hollow catheter are provided with third water delivery channels which are communicated with each other, the third water delivery channels are communicated with the sleeve, and the third water delivery channels are used for introducing an external water source.

4. The urethral dilation and catheterization apparatus with visualization of claim 4, wherein the flexible tube is provided with a film coating layer therebetween.

5. A urethral dilation and catheterization apparatus with visualization as claimed in claim 1, wherein the rim of the guide is streamlined.

6. The urethral dilation and catheterization device with visualization function according to claim 1, wherein the first and second semicircular water bladders are each provided with an arc-shaped member at the outer portion thereof, the ends of the arc-shaped members are provided with a connecting member, the connecting member is fixedly connected with the connecting rod, and the arc-shaped members are used for limiting the radial deformation of the first and second semicircular water bladders.

7. The urethral dilation and catheterization apparatus with visualization of claim 7, wherein the first water delivery passage, the second water delivery passage and the third water delivery passage are provided with communicating tubes, and the communicating tubes are fixed together.

8. The urethral dilation and catheterization apparatus with visualization of claim 7, wherein the urethral catheterization mechanism comprises a catheter with a removed end portion, the end portion of the catheter having an opening, the catheter having a balloon thereon, the balloon being in communication with an external air source.

9. The urethral dilation and catheterization apparatus with visualization of claim 1, wherein the guiding portion comprises a fixing member, a first conical portion and a second conical portion, the fixing member is detachably connected with the first conical portion and the second conical portion respectively, the surface of the first conical portion is smooth, and the surface of the second conical portion is frosted.