CN216934222U

CN216934222U - Catheter device

Info

Publication number: CN216934222U
Application number: CN202220041147.5U
Authority: CN
Inventors: 胡峻峰; 胡争艳; 胡志平
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-07-12
Anticipated expiration: 2032-01-06

Abstract

The utility model discloses a catheter device, and relates to the technical field of medical instruments. Wherein, a catheter device includes seal wire, catheter and first scale mark. The head of the catheter is provided with a first guide hole, a first channel communicated with the first guide hole is arranged in the catheter, the tail of the catheter is communicated with the first channel, the guide wire can penetrate into the first channel through the first guide hole and penetrate through the catheter, the catheter can slide along the guide wire, a filling bag is arranged on the catheter at a position close to the head, and a second channel communicated with the filling bag is arranged in the catheter; the first scale marks are arranged between the pressing trace of the filling bag back to the head of the catheter and one end of the catheter back to the head at intervals. The technical scheme of the utility model can solve the problem that the existing catheter cannot be accurately inserted and fixed in the bladder cavity.

Description

Catheter device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a catheter device.

Background

The prostatic hyperplasia caused by the imbalance of hormone balance and hyperplasia of prostate connective tissue occurs in the middle and two side lobes of the elderly, thus pressing the urethra and causing dysuria and urinary retention. There are many treatment schemes for treating prostatic hyperplasia clinically, and a minimally invasive transurethral surgery is a safe and effective treatment method.

The minimally invasive prostate surgery, taking transurethral electroprostatectomy as an example, meets the cases of minimally invasive surgery and conditions, utilizes an electroresectoscope to resect additional prostate tissue (usually, the middle lobe and the side lobe are completely resected to prevent recurrence) which presses the urethra through the urethra, and mainly solves the urination obstruction caused by prostatic hyperplasia. After the electrotomy is completed, sequential work is required, such as flushing and collecting the excised tissue by using a flusher, weighing and sending to a patient for examination, measuring urine flow, and completely removing obstruction. The surgical field lacunae was again carefully examined and the blood-ejecting vessels at each site were electrocoagulated before insertion of the catheter (urine drainage, bladder irrigation).

After the excision of the urethra accompanied by the hyperplastic prostate tissue, a defect is created, the tubular structure of the urethra is destroyed, and the continuous course of the urethral canal is interrupted. When transurethral catheterization is still needed, because the two medical instruments of the current catheter and endoscope can not enter the urethra at the same time, the catheterization belongs to blind insertion; and because there is not perfect protection and support of urethra structure, the catheter will naturally enter into the operation lacuna first, causing the process that the catheter enters into the operation cavity to be fuzzy and unclear, and the catheter can not be inserted and fixed in the bladder cavity accurately.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a catheter device, aiming at solving the problem that the existing catheter cannot be accurately inserted and fixed in a bladder cavity.

To achieve the above object, the present invention provides a catheter device comprising:

a guide wire;

the catheter is provided with a first guide hole in the head part, a first channel communicated with the first guide hole is arranged in the catheter, the tail part of the catheter is communicated with the first channel, the guide wire can penetrate into the first channel through the first guide hole and penetrate through the catheter, the catheter can slide along the guide wire, a filling bag is arranged on the catheter at a position close to the head part, and a second channel communicated with the filling bag is arranged in the catheter; and

the first scale marks are arranged between the pressing trace position of the head of the catheter back to the filling bag and one end of the catheter back to the head at intervals.

In an embodiment, the catheter is further provided with a negative pressure channel, the negative pressure channel is arranged between the pressure trace position of the head part of the catheter in the filling bag and one end of the catheter in the head part, the end, close to the filling bag, of the negative pressure channel is provided with a second guide hole communicated with the outside of the catheter, and the other end of the negative pressure channel is used for being connected with a negative pressure drainage device.

In one embodiment, the catheter further comprises an indentation mark, wherein the indentation mark is arranged at the two-end indentation of the filling sac on the catheter, and the indentation mark is coated by a material which is not transparent to X-rays.

In an embodiment, still include the boost, the boost is used for following the seal wire propelling movement the catheter, the boost includes guide sleeve, push rod and the cock seat of connecting gradually, be equipped with the third passageway that is used for the seal wire to pass in the boost, the internal diameter of first guide hole is greater than guide sleeve's external diameter, and is less than the external diameter of push rod, the biggest external diameter of cock seat is greater than the internal diameter of first passageway, the boost penetrates when first passageway, forms the catheterization complex body, guide sleeve by first guide hole is worn out, the push rod spacing in the first passageway.

In one embodiment, the outer surface of the guide sleeve is provided with a second scale mark, and the second scale mark is coated by a material which is not transparent to X-rays.

In one embodiment, the outer surface of the head part of the catheter is provided with an orientation mark arranged along the axial direction of the catheter, and the orientation mark is coated by a material which is not transparent to X-rays.

In one embodiment, the head of the catheter is further provided with a third guide hole and a fourth guide hole, the fourth guide hole is communicated with the first channel, and the catheter is internally provided with an irrigation channel communicated with the third guide hole.

In one embodiment, the first scale markings are made of a material that is opaque to X-rays.

In one embodiment, the catheter surface is provided with a lubricious coating.

In one embodiment, the material of the catheter comprises natural rubber, silicone rubber or polyvinyl chloride.

According to the technical scheme, the guide wire is penetrated firstly, so that a bridge connecting the bladder cavity and the external orifice of the urethra is constructed, and when the catheter is pushed to the far end along the guide wire, the only path of the catheter passing through the operation cavity is determined. And determining the position reached by the catheter by combining the first scale mark at the external urethral opening and the measured length from the upper edge of the internal bladder neck opening to the external urethral opening. And then through a series of operations such as filling the filling bag, pulling back the catheter and the like, the inflated filling bag is abutted against the bladder neck, and the effect of fixing the catheter is achieved.

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 structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a catheter device according to the utility model;

FIG. 2 is a schematic cross-sectional view of the urinary catheter of FIG. 1;

FIG. 3 is a schematic view of the structure of a booster in an embodiment of the catheter assembly of the present invention;

FIG. 4 is a schematic cross-sectional view of the booster of FIG. 3;

FIG. 5 is a schematic view of a urinary catheterization complex in an embodiment of the urinary catheter device of the present invention;

FIG. 6 is a schematic view of a catheter according to another embodiment of the catheter device of the present invention;

fig. 7 is a schematic cross-sectional view of the urinary catheter of fig. 6.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Catheter device	100	Catheter
110	Head part	111	Directional identification
				120	Filling bag	130	Impression mark
140	First channel	141	First guide hole
				142	The fourth guide hole	150	The second channel
160	Negative pressure channel	161	Second guide hole
				170	First scale mark	180	Flushing channel
181	Third guide hole	200	Booster
				210	Guide sleeve	211	Second scale mark
220	Push rod	230	Plug seat
				240	Third channel	300	Guide wire

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions relating to "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In this application, the term "proximal" refers to the end that is closer to the operator during use, and the term "distal" refers to the end that is farther from the operator during use.

After minimally invasive surgery of prostate gland, the urethra is damaged by excision of prostate tissue accompanied by hyperplasia, and the continuous stroke of the urethra pipeline is interrupted to form an operation cavity. When transurethral catheterization is still needed, because the two medical appliances of the prior catheter and endoscope can not enter the urethra simultaneously, the catheter belongs to blind insertion, and the process of the catheter entering the operative cavity is blurred and unclear. And because of no perfect protection and support of the urethra structure, the catheter naturally enters the surgical lacuna first, and the catheter cannot be accurately inserted and fixed in the bladder cavity.

Originally, the only channel entering the bladder is destroyed, and the catheter in the operation lacuna has a plurality of directions, and at the moment, the operator can not control the directions, positions and effective depths of the catheter. For patients with a long urethra, the catheter is mistaken for entering the bladder cavity after entering the surgical cavity. At the moment, if the filling bag on the catheter is filled, the internal orifice of the urethra can be blocked, and the urinary bladder has the phenomena of urination obstruction, expansion and the like; if the urinary bladder is to be flushed through the catheter, the operation cavity is actually flushed, which may aggravate the bleeding volume of the patient and increase the absorption of the flushing liquid by the patient, resulting in complications; the catheter curls within the surgical cavity and may also impinge on the wound surface, causing major bleeding. The above conditions are not favorable for the recovery of the patient and can aggravate the illness of the patient.

In order to solve the problems, the utility model provides a catheter device which can accurately insert and fix a catheter in a bladder cavity.

Referring to fig. 1 and 2, the catheter 100 device 10 includes a guidewire 300, a catheter 100, and first scale markings 170. A first guide hole 141 is formed in a head part 110 of the urinary catheter 100, a first channel 140 communicated with the first guide hole 141 is formed in the urinary catheter 100, the first channel 140 penetrates through a tail part of the urinary catheter 100, the guide wire 300 can penetrate into the first channel 140 through the first guide hole 141 and penetrate through the urinary catheter 100, the urinary catheter 100 can slide along the guide wire 300, a filling bag 120 is arranged on the urinary catheter 100 at a position close to the head part 110, and a second channel 150 communicated with the filling bag 120 is formed in the urinary catheter 100; the first scale mark 170 is arranged at an interval between the indentation of the filling bag 120 facing away from the head 110 of the urinary catheter 100 and the end of the urinary catheter 100 facing away from the head 110.

After transurethral prostate electrosurgery, when transurethral catheterization is still needed, an electronic cystoscope is selected and used, has a display function, can be used for determining and distinguishing an operation cavity and a bladder cavity, and measuring the length from the upper edge of an inner opening of a bladder neck to an outer opening of a urethra; in addition, the electronic cystoscope is provided with a set of delivery device, and the guide wire 300 can accurately pass through the surgical cavity and enter the bladder cavity with the aid of the delivery device.

After the guide wire 300 enters the bladder cavity with the aid of the electronic cystoscope, the catheter 100 is pushed, one end of the guide wire 300 positioned outside the external urethral orifice is penetrated into the first channel 140 through the first guide hole 141, and then the catheter 100 is pushed along the guide wire 300 towards the far end, namely, towards the bladder cavity. By using the measured length from the upper edge of the inner opening of the bladder neck to the outer opening of the urethra and combining the first scale marks 170 on the surface of the urinary catheter 100, the position reached by the urinary catheter 100 can be approximately obtained, namely when the first scale marks 170 at the outer opening of the urethra are not less than the measured length from the upper edge of the inner opening of the bladder neck to the outer opening of the urethra, the urinary catheter 100 is shown to be inserted into the bladder cavity, and then the pushing of the urinary catheter 100 can be stopped. Specifically, for example, the interval unit of the first scale mark 170 is 1cm, that is, the first scale mark 170 is 1cm, 2cm, and 3cm. from 0 scale of the filling bag 120 away from the indentation of the head 110 of the urinary catheter 100 in sequence in the direction facing away from the head 110 of the urinary catheter 100, and the reading directly at the external orifice of the urethra is the insertion depth. The scale of the indentation of the filling bag 120 facing away from the head 110 of the catheter 100 can also be used as an end point scale, where the total scale minus the reading at the external orifice of the urethra is the depth of insertion. The guide wire 300 is then withdrawn back out of the urethra and an inflation medium, for example typically 10ml of liquid, is delivered into the second passage 150, inflating the inflation bladder 120, and the catheter 100 is then pulled back until resistance is felt by the pull back, whereupon the pull back is stopped and the inflation bladder 120 abuts the bladder neck.

By first penetrating the guide wire 300, it is constructed to form a bridge connecting the bladder cavity and the external orifice of the urethra, and the only path for the catheter 100 to pass through the operative cavity is determined as the catheter 100 is pushed distally along the guide wire 300. And the catheter 100 is positioned by combining the first scale markings 170 at the external urethral orifice with the measured length of the upper edge of the inner neck opening of the bladder to the external urethral orifice. And then the inflated filling bag 120 is abutted against the bladder neck through a series of operations such as filling the filling bag 120 and pulling back the catheter 100, so that the catheter 100 is fixed.

After the guide wire 300 is inserted into the bladder cavity, if the urinary catheter 100 can also be inserted into the bladder cavity along the guide wire 300, it needs to be ensured that the length of the guide wire 300 inserted into the bladder cavity is not less than the sum of the length of the head 110 of the urinary catheter 100 and the distance between the indentation marks 130 at the two ends of the filling bag 120. Considering that the catheter 100 also has a length that is pulled back, there is a safety margin for the length into which the guide wire 300 extends. Namely, the length of the guide wire 300 extending into the body of the patient is the sum of the length of the head 110 of the urinary catheter 100, the distance between the trace marks 130 at the two ends of the filling bag 120, the length of the safety margin and the length measured from the upper edge of the inner opening of the bladder neck to the outer opening of the urethra. Preferably, the guidewire 300 is crimped within the bladder cavity in order not to damage the inner wall of the bladder cavity.

Meanwhile, in order to facilitate the transportation and movement of the urinary catheter 100 along the guide wire 300, the guide wire 300 needs to penetrate the urinary catheter 100 when outside the patient, i.e. the length of the guide wire 300 outside the external urethral orifice should be longer than the whole length of the urinary catheter 100.

The material of the urinary catheter 100 includes natural rubber, silicone rubber or polyvinyl chloride. The catheter 100 made of polyvinyl chloride is hard, so that the irritation to a patient is large in the using process; the catheter 100 made of silicon rubber is soft and hardly irritates patients, but the surface of the product is not easy to keep smooth in the manufacturing and molding process, so that the manufacturing cost is high; the catheter 100 made of natural rubber is softer, the surface silicon is easy to treat, the irritation to a patient is small, the biocompatibility is good, and the surface smoothness is high.

With continued reference to fig. 1, in one embodiment, to further confirm that the catheter 100 has entered the bladder cavity, the catheter device further comprises a mark 130, wherein the mark 130 is provided at the two-end mark of the filling bag 120 on the catheter 100, and the mark 130 is made of a material opaque to X-rays. Because the impression mark 130 is coated by the material which is not transparent to X-rays, the specific position of the impression mark 130 can be observed under the irradiation of X-rays, whether the filling sac 120 enters the bladder cavity can be observed by utilizing the characteristic, if the filling sac 120 enters the bladder cavity, the catheter head 110 can be confirmed to enter the bladder cavity, so that the double confirmation effect is achieved, and the next operation is ensured. At the same time, the profile of the catheter 100 can be observed with B-mode ultrasound to further confirm that the catheter 100 has entered the bladder cavity.

Referring to fig. 6 and 7, on the basis of the above embodiment, further, the urinary catheter 100 is further provided with a negative pressure channel 160, the negative pressure channel 160 is disposed between the indentation of the filling bag 120 facing away from the catheter head 110 and the end of the urinary catheter 100 facing away from the head 110, one end of the negative pressure channel 160 near the filling bag 120 is provided with a second guide hole 161 communicating with the outside of the urinary catheter 100, and the other end is used for connecting with a negative pressure drainage device.

In contrast to the previous embodiment, the dual confirmation that the catheter 100 has been inserted into the bladder cavity is achieved by combining the first scale markings 170 at the external urethral meatus with the measured length of the upper edge of the internal bladder neck meatus to the external urethral meatus, and using the impression markings 130. The guide wire 300 is pulled out and retracted to the outside of the urethra, filling working medium is conveyed into the second channel 150, the filling bag 120 is inflated, then the catheter 100 is pulled back, when the pulling back feels resistance, the pulling back is stopped, at the moment, the second guide hole 161 and the negative pressure channel 160 are located in the operation cavity, the negative pressure drainage device communicated with the negative pressure channel 160 is started, residues in the operation cavity are discharged from the negative pressure channel 160 through the second guide hole 161, the pressure in the operation cavity is reduced, negative pressure is formed (pressure difference is formed between the bladder cavity and the operation cavity), the bladder neck is contracted towards the operation cavity under the action of the pressure difference, the filling bag 120 is in tight abutting connection with the bladder neck, and the operation cavity and the bladder cavity are separated into two non-communicated areas by the filling bag 120.

The negative pressure channel 160 is used for negative pressure drainage of residues in the surgical cavity, so that a pressure difference is formed between the surgical cavity and the bladder cavity, the isolation effect of the filling bag 120 on the surgical cavity and the bladder cavity is further enhanced, and the position of the catheter 100 in the body of the patient is fixed.

The negative pressure drainage device can be a negative pressure drainage bottle, the negative pressure during drainage of the negative pressure drainage bottle is not easy to be too large so as to avoid causing secondary injury to a patient, and the negative pressure drainage bottle sucks residues in an operation cavity before the bladder neck is sealed, wherein the residues comprise urine, flushing fluid, effusion, blood and the like. Considering that there is a gap between the external orifice of the urethra and the external wall of the catheter 100, it is necessary to seal the external orifice of the catheter 100 from the external orifice of the urethra in order to prevent the leakage of residues and bacterial infection. When the absorption amount is reduced, micro negative pressure can be used for maintaining drainage, the negative pressure drainage amount is recorded, the negative pressure drainage bottle is observed, and a treatment scheme is drawn up according to the specific drainage time, color and drainage amount of the drainage liquid. In addition, the negative pressure channel 160 may deflate a loose surgical cavity, so that the wound surfaces stick to each other, which is beneficial to hemostasis of the wound surfaces. Under the action of negative pressure, a new urinary tract channel prototype taking the catheter 100 as the center is easily promoted, and the recovery of the state of illness of a patient is facilitated.

In order to facilitate the drainage of the residues in the surgical cavity through the negative pressure channel 160, the negative pressure channel 160 is located on the outer side of the urinary catheter 100, one end of the negative pressure channel 160 close to the filling bag 120 is inclined, and the second guide hole 161 is arranged on the inclined surface of the end face to facilitate the inflow of the residues. Meanwhile, the distance between the second guiding hole 161 and the filling bag 120 is not too close to prevent the inflated filling bag 120 from obstructing the flow of the residue into the negative pressure channel 160, and preferably, the distance between the second guiding hole 161 and the indentation of the filling bag 120 facing away from the catheter head 110 is in the range of 0.5-3 cm.

Considering that both the guide wire 300 and the catheter 100 may touch the inner wall of the patient, in order to avoid damaging the patient, both the guide wire 300 and the catheter 100 are provided to be relatively soft, which causes inconvenience in controlling the movement of the catheter 100 when the catheter 100 is pushed. Also, when the catheter 100 is pushed such that the guide wire 300 penetrates into the catheter 100, the guide wire 300 may puncture the inner wall of the first channel 140, resulting in the catheter 100 being discarded, and a potential risk of surgical failure may be left.

Referring to fig. 3 to 5, in order to solve the above problem, in an embodiment, the catheter 100 apparatus 10 further includes a booster 200, the booster 200 is used for pushing the catheter 100 along the guide wire 300, the booster 200 includes a guide sleeve 210, a push rod 220 and a plug base 230, which are connected in sequence, a third channel 240 is disposed in the booster 200 for the guide wire 300 to pass through, an inner diameter of the first guide hole 141 is larger than an outer diameter of the guide sleeve 210 and smaller than an outer diameter of the push rod 220, a maximum outer diameter of the plug base 230 is larger than an inner diameter of the first channel 140, when the booster 200 penetrates into the first channel 140, the guide sleeve 210 penetrates out of the first guide hole 141, and the push rod 220 is limited in the first channel 140.

Before the guide wire 300 is inserted into the urinary catheter 100, one end of the guide sleeve 210 of the booster 200 is inserted into the first channel 140, so that the guide sleeve 210 extends from the first guide hole 141, because the outer diameter of the push rod 220 is larger than the inner diameter of the first guide hole 141, the push rod 220 is limited in the first channel 140, the maximum outer diameter of the plug seat 230 is larger than the inner diameter of the first channel 140, and the plug seat 230 is at least partially located outside the urinary catheter 100. The booster 200 penetrates into the urinary catheter 100 to form a urethral catheterization complex, the booster 200 is pushed, and one end of the guide wire 300 positioned outside the external orifice of the urethra is penetrated into the third channel 240 through the guide sleeve 210. The plug 230 located outside the urinary catheter 100 is pushed along the guide wire 300, so as to drive the urinary catheter 100 to be pushed towards the bladder cavity. The subsequent operations are the same as those of the above embodiment except that the guide wire 300 is extracted and the booster 200 is also extracted out of the patient.

The guiding sleeve 210 is made of soft materials, is located at the farthest end of the catheterization composite body in the pushing process, can avoid damages such as bleeding to a patient when touching the inner wall of an operation cavity and the inner wall of a bladder cavity, has strong adaptability to the path change of the guide wire 300, avoids the curling of the catheter 100 in the operation cavity, can randomly strain in the sliding process, and enables the catheterization composite body to stably cross the operation cavity without trauma. The push rod 220 has a certain hardness to increase the hardness of the catheterization composite, maintain the stability during sliding and facilitate the insertion of the catheterization composite. The plug seat 230 is a force application part when pushing, the maximum outer diameter of the plug seat 230 is larger than the inner diameter of the first channel 140, so that the push rod 220 can be prevented from penetrating out of the first guide hole 141, and the integrity of the catheterization complex when being inserted is ensured.

After the guide wire 300 is inserted into the bladder cavity, if the catheterization complex is also inserted into the bladder cavity along the guide wire 300, it is required to ensure that the length of the guide wire 300 inserted into the bladder cavity is not less than the sum of the length of the head 110 of the urinary catheter 100, the distance between the ballast marks 130 at the two ends of the filling bag 120, and the length of the guide sleeve 210. Given that the catheter 100 also has a length that is pulled back, there is a safety margin for the length of the guidewire 300 that extends into it. Namely, the length of the guide wire 300 extending into the patient is the sum of the length of the guide sleeve 210, the length of the head 110 of the urinary catheter 100, the distance between the trace marks 130 at the two ends of the filling bag 120, the length of the safety margin and the measured length from the upper edge of the inner opening of the bladder neck to the outer opening of the urethra. Preferably, the guidewire 300 is crimped within the bladder cavity in order not to damage the inner wall of the bladder cavity.

Meanwhile, in order to facilitate the transportation and movement of the urethral catheterization complex along the guide wire 300, the guide wire 300 needs to penetrate the urethral catheterization complex when outside the patient, that is, the length of the guide wire 300 outside the external urethral orifice should be longer than the whole length of the urethral catheterization complex.

Referring to fig. 3, considering that the guiding cannula 210 is relatively flexible, if the operation is improper or an accident occurs, the guiding cannula 210 may be broken and left in the patient, and the guiding cannula 210 is not easy to find after falling off, which may form a safety hazard if left in the patient. Therefore, in one embodiment, the outer surface of the guiding sleeve 210 is provided with a second scale mark 211, and the second scale mark 211 is made of a material opaque to X-rays. Since the second scale mark 211 is made of a material opaque to X-rays, the guide sleeve 210 can be detected under the irradiation of X-rays, and if the guide sleeve 210 is broken off, the detection can be performed by this method and the guide sleeve can be taken out. Besides, under the irradiation of X-ray, the second scale mark 211 also has the function of positioning the motion trail of the urethral catheterization complex, and observing whether the guide sleeve 210 enters the bladder cavity and the entering depth.

In another embodiment, the outer surface of the head 110 of the urinary catheter 100 is provided with an orientation mark 111 arranged along the axial direction of the urinary catheter 100, the orientation mark 111 is coated by a material which is opaque to X-rays, and under the monitoring of the X-rays, the advancing direction of the urinary catheter 100 is obtained by observing the orientation mark 111, so that the function of guiding the intubation and positioning the urinary catheter 100 is achieved.

Unlike the previous embodiment, in one embodiment, the first scale markings 170 are made of a material that is opaque to X-rays, and the catheter 100 can also be positioned under X-ray surveillance by viewing the first scale markings 170.

Referring to fig. 6 and 7, after the catheter 100 is inserted and fixed in the patient, the main operations of draining urine and irrigating the bladder are performed, and therefore, in one embodiment, the head 110 of the catheter 100 is further provided with a third guide hole 181 and a fourth guide hole 142, the fourth guide hole 142 is communicated with the first channel 140, and the catheter 100 is provided with an irrigation channel 180 communicated with the third guide hole 181. Because the head 110 of the catheter 100 is now positioned in the bladder cavity, the third and fourth guide holes 181, 142 are now in communication with the bladder cavity, and the bladder cavity can be flushed through the flush channel 180 and drained through the first channel 140. The condition that the operation cavity is actually washed, the bleeding amount of a patient can be aggravated, and the absorption of the washing liquid by the patient is increased to cause complications and the like is avoided.

Further, after the operation cavity is drained through the negative pressure channel 160, the filling bag 120 not only plays a role of fixing the catheter 100, but also isolates the operation cavity and the bladder cavity, so that the two cavities are independent from each other. Can respectively carry out the drainage of the operation cavity and the flushing or the drainage of the bladder cavity at the same time, thereby accelerating the operation efficiency. In addition, because the operation cavity and the bladder cavity are independent from each other, the drainage fluid obtained by draining the operation cavity does not contain urine and the like in the bladder cavity, the bleeding amount of the operation cavity can be accurately calculated, the diagnosis of the illness state of the patient is facilitated, and the color difference of the drainage fluid generated by flushing the bladder cavity is banned to be used as a method for estimating the approximate bleeding amount of the patient. When the bladder cavity is flushed, the dosage of flushing liquid is reduced sharply because the bladder cavity and the operation cavity are mutually independent. For the patient, the dosage of the washing liquid is reduced, the possibility of complications caused by reabsorption of the washing liquid is reduced, and the economic burden is reduced due to the reduction of the dosage. When bleeding is avoided, flushing fluid is frequently added and the drainage bag is replaced, so that the nursing workload is reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the specification and drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims

1. A catheter device, comprising:

a guide wire;

2. The catheter device according to claim 1, wherein said catheter is further provided with a negative pressure channel, said negative pressure channel is arranged between a pressure trace of said filling bag facing away from said head of said catheter and an end of said catheter facing away from said head, one end of said negative pressure channel near said filling bag is provided with a second guide hole communicating with the outside of said catheter, and the other end is used for connecting with a negative pressure drainage device.

3. The catheter device of claim 2 further comprising a tracking indicator disposed on said filling balloon at both end tracks on said catheter, said tracking indicator being coated with an X-ray opaque material.

4. The catheter device of claim 3, further comprising a booster, wherein the booster is used for pushing the catheter along the guide wire, the booster comprises a guide sleeve, a push rod and a plug seat which are connected in sequence, a third channel for the guide wire to pass through is arranged in the booster, the inner diameter of the first guide hole is larger than the outer diameter of the guide sleeve and smaller than the outer diameter of the push rod, the maximum outer diameter of the plug seat is larger than the inner diameter of the first channel, a urethral catheterization complex is formed when the booster penetrates into the first channel, the guide sleeve penetrates out of the first guide hole, and the push rod is limited in the first channel.

5. The catheter device of claim 4 wherein said guide sleeve outer surface is provided with a second scale marking, said second scale marking being coated with an X-ray opaque material.

6. A catheter device according to any of claims 1 to 5 wherein the outer surface of the catheter head is provided with orientation markings arranged axially along the catheter, said markings being provided by a material which is opaque to X-rays.

7. A catheter device according to any of claims 1 to 5 wherein said catheter head is further provided with a third guide opening and a fourth guide opening, said fourth guide opening being in communication with said first channel, and wherein said catheter is provided with an irrigation channel in communication with said third guide opening.

8. A catheter device according to any of claims 1 to 5 wherein said first scale markings are provided by a material which is opaque to X-rays.

9. A catheter device according to any of claims 1 to 5 wherein the catheter surface is provided with a lubricious coating.

10. A catheter device according to any of claims 1 to 5 wherein said catheter material comprises natural rubber, silicone rubber or polyvinyl chloride.