CN110975116A - Use method of prostate dilation catheter - Google Patents

Abstract

The invention relates to a prostate dilation catheter, which comprises a main catheter; a balloon water injection cavity and a catheter main cavity are arranged in the main catheter; the rear ends of the balloon water injection cavity and the catheter main cavity are sequentially and respectively provided with a balloon water injection joint and a catheter water inlet joint; the balloon water injection joint and the catheter water inlet joint are sequentially communicated with the balloon water injection cavity and the catheter main cavity respectively; the front ends of the balloon water injection cavity and the catheter main cavity are provided with balloons; the saccule and the main catheter at the front end of the saccule are made of transparent materials; the balloon and the main catheter at the front end of the balloon are made of transparent materials, the endoscope is inserted into the main catheter, and the main catheter, the balloon and the endoscope are designed in a mutually matched mode, so that the convenience of the endoscope is guaranteed, the idea of observing the visual field of the endoscope is improved, the discomfort of the product in use is greatly relieved, the product is matched with the endoscope in use, and the operation risk is reduced.

Description

Use method of prostate dilation catheter

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a use method of a prostate dilation catheter.

Background

Prostate hyperplasia is one of the more common diseases in the elderly of men, and with the increasing incidence of senile diseases in the global population, the incidence rate of prostate hyperplasia increases clinically with age, but the clinical symptoms are not necessarily shown when proliferative diseases occur. The clinical symptoms of the patients with prostatic hyperplasia are atypical due to compensation in the early stage of the onset of the disease, the clinical manifestations are gradually obvious along with the aggravation of the lower urinary tract obstruction symptoms, the disease course is relatively slow to progress, and the onset time is difficult to determine. The technology is relatively mature when the transurethral balloon dilatation of prostate is clinically applied to patients with prostatic hyperplasia. The transurethral columnar water sac prostate dilation is an effective, safe, simple and minimally invasive innovative operation method for treating benign prostatic hyperplasia, is an operation method for treating benign prostatic hyperplasia by reserving original organs, has the characteristics of convenient operation, tiny wound and high safety factor, and is especially an ideal choice for old and weak patients who cannot tolerate resection or do not want to resect prostate tissues.

The existing dilation catheter is placed by the personal technology of medical staff, and whether the catheter is placed in place is judged by subjective intuition and experience, so that the operation of placing the catheter is complex, the requirement on the skill of a doctor is high, the deviation rate of placing the catheter is extremely high, inaccurate placement can prevent partial hyperplasia prostate from being dilated, the effect of operation is reduced, and urinary tract injury and urethral injury can be caused by too much dilation of non-prostatic urethra, so that inconvenience is brought to use.

In view of the above technical problems, improvements are needed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a using method of a prostate dilation catheter, which is simple in structure, convenient and practical and can realize visual and accurate positioning of the prostate dilation catheter.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a prostate dilation catheter comprising a main catheter; a balloon water injection cavity and a catheter main cavity are arranged in the main catheter; the rear ends of the balloon water injection cavity and the catheter main cavity are sequentially and respectively provided with a balloon water injection joint and a catheter water inlet joint; the balloon water injection joint and the catheter water inlet joint are sequentially communicated with the balloon water injection cavity and the catheter main cavity respectively; the front ends of the balloon water injection cavity and the catheter main cavity are provided with balloons; the sacculus and the main catheter at the front end of the sacculus are made of transparent materials.

In a preferred form of the invention, the catheter main lumen has a channel formed therein for passage of an endoscope therethrough.

As a preferable mode of the invention, the handle is sleeved outside the rear end of the main catheter, the sealing cap is arranged on the handle, and the balloon water injection joint and the catheter water inlet joint are positioned on the handle.

As a preferable mode of the invention, an inflation tube is inserted in the balloon water injection joint in a penetrating way, one end of the inflation tube is communicated with the balloon water injection cavity, and the other end of the inflation tube is connected with a high-pressure three-way valve.

In a preferable mode of the invention, a stainless steel guide needle is arranged in a lumen of the balloon water injection cavity, and the stainless steel guide needle is connected with an inflation tube.

In a preferred mode of the invention, a luer protection cap is sleeved outside the water inlet joint of the catheter.

As a preferred mode of the present invention, a sealing member is sleeved between the main catheter and the handle.

As a preferable mode of the present invention, the main catheter is further provided at its outer periphery with a front urethra protection sleeve movably sleeved at the outer periphery of the main catheter and capable of moving axially relative to the main catheter.

As a preferable mode of the present invention, the outer surface of the main catheter is marked with a scale extending along the length direction of the main catheter.

A method of using a prostate dilation catheter, comprising the steps of:

step one, preparing a prostate dilation catheter;

in-vitro testing the shape of the balloon after being inflated to ensure that the balloon is of a columnar structure after being inflated;

inserting an endoscope into a main catheter of the prostate dilation catheter to the tail end, externally coating sterile paraffin oil, placing the coated sterile paraffin oil into a urethra through a front urethra protective sleeve, then entering a bladder under direct vision, and adjusting a balloon to a specified position;

simultaneously, pulling the main catheter back to the outside of the body to prevent the main catheter from shifting;

opening a high-pressure three-way valve on the rear inflation tube, injecting 10-15 mL of normal saline, and observing pressure of a pressure pump, shape change of a balloon and prostate dilation degree;

step, keeping the pressure for 4 minutes after the prostate expansion reaches the expected expansion effect;

opening a high-pressure three-way valve, relieving the pressure of the saccule and pumping back the normal saline in the saccule;

step one, the prostate dilation catheter is pulled out, and the catheter is kept.

The invention has the beneficial effects that:

1. the balloon and the main catheter at the front end of the balloon are made of transparent materials, the endoscope is inserted into the main catheter, and the main catheter, the balloon and the endoscope are designed in a mutually matched mode, so that the convenience of the use of the endoscope is guaranteed, the idea of observing the visual field of the endoscope is improved, the discomfort of the product in use is greatly reduced, the product is matched with the endoscope in use, and the operation risk is reduced;

2. the scales extending along the length direction of the main catheter are marked on the outer surface of the main catheter and are matched with an endoscope inserted into the main catheter for use, the back view of the endoscope is controlled to observe the position of the scales marked on the main catheter, the scales are used for accurately determining the position of the prostate dilation catheter, visual and accurate positioning is realized, the difficulty of operation is greatly reduced, and meanwhile, the operation effect is also improved;

3. compared with the main catheter in the market at present, the prostate dilation catheter has the advantages that the main catheter is more accurate and convenient to position, can be fixed after the prostate is dilated, ensures the dilation effect, plays a role in hemostasis by compression, relieves the compression on the external sphincter, does not excessively damage the external sphincter, and prevents urinary incontinence and hemorrhage.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a front view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a main conduit according to an embodiment of the present invention;

reference numbers in the figures: the device comprises amain catheter 1, a balloonwater injection cavity 2, a cathetermain cavity 3, aballoon 4, anendoscope 5, ahandle 6, asealing cap 7, aninflation tube 8, a high-pressure three-way valve 9, a catheterwater inlet joint 10, asealing piece 11, a front urethraprotective sleeve 12,scales 13, a Ruhrprotective cap 14, a stainlesssteel guide needle 15 and a balloonwater injection joint 20.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 to 4, a prostate dilation catheter comprises amain catheter 1; the diameter of themain duct 1 is generally 5-8 mm, the length is 300-500 mm, and the diameter of the front end opening of themain duct 1 is 2-4 mm; a balloonwater injection cavity 2 and a cathetermain cavity 3 are arranged in themain catheter 1; the rear ends of the balloonwater injection cavity 2 and the cathetermain cavity 3 are respectively provided with a balloonwater injection joint 20 and a catheterwater inlet joint 10 in sequence; the balloonwater injection joint 20 and the catheterwater inlet joint 10 are sequentially communicated with the balloonwater injection cavity 2 and the cathetermain cavity 3 respectively.

The outer diameter phi of theballoon 4 is 6.36 +/-0.05 mm. After thesacculus 4 is expanded, the cross section of the sacculus is of a columnar structure, and the length of the sacculus is 44 mm. The length of thesaccule 4 is 6.8-11.8 cm, and the width is 12 mm.

In the present embodiment, the diameter of theentire balloon 4 is not more than 9mm in the unused state, and theballoon 4 is cylindrical after expansion in the used state. Theballoon 4 has an intraballoon pressure of 0.25 to 0.45MPa, preferably 0.25 to 0.3MPa after inflation. Themain catheter 1 can be positioned during the expansion use, so that theballoon 4 can be accurately positioned close to the external sphincter.

During specific processing, the outside of the main body of the fracture-expanding catheter can be coated with a lubricant, so that the fracture-expanding catheter is hydrophilic and smooth. The invention can realize touch type positioning or fine fiberscope direct-viewing positioning. In addition, the invention can realize one-time water injection and smooth crack expanding procedure.

The front ends of the balloonwater injection cavity 2 and the cathetermain cavity 3 are provided with aballoon 4; thesacculus 4 and themain catheter 1 at the front end of thesacculus 4 are made of transparent materials; the channel for theendoscope 5 to pass through is formed in the cathetermain cavity 3, and in the existing prostate dilation operation, medical staff judge the advancing position of the prostate dilation catheter in the body by only depending on intuition and experience through rectum finger diagnosis and touching the positioning protrusion at the prostate tip or by finger pressing the perineum touch positioning protrusion, but the judging method can cause certain errors due to different obesity degrees of patients. Thesacculus 4 and themain catheter 1 at the front end of thesacculus 4 are made of transparent materials; through controllingendoscope 5 to look back to the position of thescale 13 on observationmain duct 1 surface, through the affirmation to thescale 13 position, realize expanding the accurate positioning of splitting the pipe to the prostate, avoid among the prior art through touch location protruding or press the position deviation such as that the perineum portion touch location is protruding to judge the prostate and expand the pipe and appear, can improve the location precision, ensure the operation effect.

The balloon and the main catheter at the front end of the balloon are made of transparent materials, the endoscope is inserted into the main catheter, and the main catheter, the balloon and the endoscope are designed in a mutually matched mode, so that the convenience of the endoscope is guaranteed, the idea of observing the visual field of the endoscope is improved, the discomfort of the product in use is greatly relieved, the product is matched with the endoscope in use, and the operation risk is reduced.

Specifically, referring to fig. 3, avisual lens 50 is connected to an end portion of theendoscope 5, and theendoscope 5 is inserted into themain catheter cavity 3 of themain catheter 1; and extends out from the opening of the front end of themain duct 1; after insertion ofendoscope 5, a medical professional may view throughvisual lens 50. Medical personnel can observe the position of theendoscope 5 in themain catheter 1 through thevisual lens 50, combine the definite to thescale 13 position, when thescale 13 reaches predetermined position department, stop the operation to the prostate dilation catheter, so can realize the visual accurate positioning of prostate dilation catheter.

The periphery of themain catheter 1 is also provided with a front urethraprotective sleeve 12 which is movably sleeved on the periphery of themain catheter 1 and can axially move relative to themain catheter 1; in addition, in this embodiment, ahandle 6 is sleeved outside the rear end of themain catheter 1, asealing cap 7 is arranged on thehandle 6, and the balloonwater injection joint 20 and the catheterwater inlet joint 10 are located on thehandle 6. The inner wall of the conduitwater inlet joint 10 is provided with threads and can be connected with other medical equipment such as a pressure water injector and the like in a screwing mode, and a luerprotective cap 14 is sleeved outside the conduitwater inlet joint 10. Can play the role of isolating themain catheter 1 from the outside, thereby avoiding the pollution of the prostate dilation catheter with the front opening.

The front end of themain catheter 1 adopts an arc structure, and the front end adopts the arc structure to facilitate catheter placement, so that the side injury of the lower urethra can be avoided, the organ tissues of a patient are prevented from being damaged in the process of catheter implantation, and the pain of the patient caused by the abrasion of the tissues is avoided.

The scales extending along the length direction of the main catheter are marked on the outer surface of the main catheter and are matched with an endoscope inserted into the main catheter for use, the back view of the endoscope is controlled to observe the position of the scales marked on the main catheter, the scales are used for accurately determining the position of the prostate dilation catheter, visual and accurate positioning is realized, the difficulty of operation is greatly reduced, and meanwhile, the operation effect is improved.

Aninflation tube 8 is inserted into the balloon water injection joint 20, one end of theinflation tube 8 is communicated with the balloonwater injection cavity 2, and the other end is connected with a high-pressure three-way valve 9; a stainlesssteel guide needle 15 is arranged in a lumen of the balloonwater injection cavity 2, and the stainlesssteel guide needle 15 is connected with theinflation tube 8; thesacculus 4 is injected with water once to form an initial elliptical shape, and when the injected water reaches the shape and the pressure required by the design, the pressure is kept to be greater than or equal to 0.3Mpa so as to reach theelliptical sacculus 4 and the pressure designed in advance. The expanded elliptical crack expanding capsule has a length of 8-13 cm and an outer diameter of 2.5-4.5 cm.

A sealingelement 11 is sleeved between themain catheter 1 and thehandle 6; the connection sealing performance of the handle, the balloon water injection joint 20 and the catheter water inlet joint 10 is improved, and the use safety of the prostate dilation catheter is further ensured.

A method of using a prostate dilation catheter, comprising the steps of:

preparing a prostate dilation catheter;

step two, testing the shape of the balloon after being pressurized in vitro to ensure that the balloon is of a columnar structure after being pressurized; the balloon pressurization can be realized by injecting normal saline into the balloon through a balloon water injection port by using a pressure injector capable of measuring pressure to be 0.1-0.15 Mpa;

inserting anendoscope 5 into amain catheter 1 of the prostate dilation catheter to the tail end, externally coating sterile paraffin oil, placing the endoscope into the urethra through a front urethraprotective sleeve 12, then entering the bladder under direct vision, and adjusting aballoon 4 to a specified position;

step (four), themain catheter 1 is pulled back to the outside of the body at the same time, and themain catheter 1 is prevented from shifting;

step five, opening a high-pressure three-way valve on the rear inflation tube, injecting 10-15 mL of normal saline, and observing the pressure of a pressure pump, the shape change of the balloon (4) and the prostate dilation degree;

step six, after the prostate expansion reaches the expected expansion effect, keeping the pressure for 4 minutes;

step seven, opening the high-pressure three-way valve, relieving the pressure of theballoon 4 and pumping back the normal saline in theballoon 4;

and step (eight), pulling out the prostate dilation catheter and indwelling the catheter.

In addition, in the embodiment, the main conduit is also provided with aconduit inlet cavity 3, and normal saline can be injected into the bladder through theconduit inlet cavity 3 to flush the bladder; after 5-8 h, preferably 6h, after operation, the normal saline in the outer sac can be completely discharged, and 10-12 ml of normal saline is injected into the inner sac for fixing the main catheter.

Compared with the main catheter in the market at present, the prostate dilation catheter has the advantages that the main catheter is more accurate and convenient to position, can be fixed after the prostate is dilated, ensures the dilation effect, plays a role in hemostasis by compression, relieves the compression on the external sphincter, does not excessively damage the external sphincter, and prevents urinary incontinence and hemorrhage.

Example 2:

theballoon 4 and themain catheter 1 are made of full transparent materials, and anendoscope 5 is inserted into themain catheter 1; in thepresent embodiment 2, theendoscope 5 is inserted into themain duct 1; sacculus 4 andmain catheter 1 are all made of transparent material, look back throughcontrol endoscope 5 to observe the position of thescale 13 onmain catheter 1 surface, through the affirmation to thescale 13 position, realize the accurate positioning to prostate expansion fracture pipe, avoid among the prior art through the touch location protruding or through pressing the position deviation such as the protruding position deviation that judges prostate expansion fracture pipe appearance of perineum portion touch location, can improve the location precision, ensure the operation effect.

The rest of the present example refers to example 1.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: themain catheter 1, the balloonwater injection cavity 2, the cathetermain cavity 3, theballoon 4, theendoscope 5, thehandle 6, the sealingcap 7, theinflation tube 8, the high-pressure three-way valve 9, the catheter water inlet joint 10, the sealingpiece 11, the anteriorurethra protection sleeve 12, thescales 13, theluer protection cap 14, the stainlesssteel guide needle 15, the balloon water injection joint 20 and other terms are used, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (10)

1. A prostate dilation catheter, characterized in that; comprising a main duct (1); a balloon water injection cavity (2) and a catheter main cavity (3) are arranged in the main catheter (1); the rear ends of the balloon water injection cavity (2) and the catheter main cavity (3) are respectively provided with a balloon water injection joint (20) and a catheter water inlet joint (10) in sequence; the balloon water injection joint (20) and the catheter water inlet joint (10) are sequentially communicated with the balloon water injection cavity (2) and the catheter main cavity (3) respectively; the front ends of the balloon water injection cavity (2) and the catheter main cavity (3) are provided with a balloon (4); the sacculus (4) and the main catheter (1) at the front end of the sacculus (4) are made of transparent materials.

2. The prostate dilation catheter according to claim 1, wherein: a channel for an endoscope (5) to pass through is formed in the main catheter cavity (3).

3. The prostate dilation catheter according to claim 1, wherein: the outer side of the rear end of the main catheter (1) is sleeved with a handle (6), a sealing cap (7) is arranged on the handle (6), and the balloon water injection joint (20) and the catheter water inlet joint (10) are located on the handle (6).

4. A prostate dilation catheter according to claim 3, wherein: an inflation tube (8) is inserted in the balloon water injection joint (20), one end of the inflation tube (8) is communicated with the balloon water injection cavity (2), and the other end of the inflation tube is connected with a high-pressure three-way valve (9).

5. The prostate dilation catheter according to claim 4, wherein: a stainless steel guide needle (15) is arranged in the lumen of the balloon water injection cavity (2), and the stainless steel guide needle (15) is connected with the inflation tube (8).

6. The prostate dilation catheter according to claim 5, wherein: the water inlet joint (10) of the catheter is externally sleeved with a luer protective cap (14).

7. The prostate dilation catheter according to claim 6, wherein: and a sealing element (11) is sleeved between the main catheter (1) and the handle (6).

8. The prostate dilation catheter according to claim 7, wherein: the periphery of the main catheter (1) is also provided with a front urethra protective sleeve (12) which is movably sleeved on the periphery of the main catheter (1) and can axially move relative to the main catheter (1).

9. The prostate dilation catheter according to claim 8, wherein: the scale (13) extending along the length direction of the main catheter (1) is marked on the outer surface of the main catheter (1).

10. A method of using the prostate dilation catheter according to any one of claims 1 to 9, comprising the steps of:

preparing a prostate dilation catheter;

step two, testing the shape of the balloon after being pressurized in vitro to ensure that the balloon is of a columnar structure after being pressurized;

inserting an endoscope (5) into a main catheter (1) of the prostate dilation catheter to the tail end, externally coating sterile paraffin oil, placing the endoscope into a urethra through a front urethra protective sleeve (12), then entering a bladder under direct vision, and adjusting a balloon (4) to a specified position;

step (four), the main catheter (1) is pulled back to the outside of the body at the same time, and the main catheter (1) is prevented from shifting;

step five, opening a high-pressure three-way valve on the rear inflation tube, injecting 10-15 mL of normal saline, and observing the pressure of a pressure pump, the shape change of the balloon (4) and the prostate dilation degree;

step six, after the prostate expansion reaches the expected expansion effect, keeping the pressure for 4 minutes;

step seven, opening the high-pressure three-way valve, releasing the pressure of the balloon (4) and pumping back the normal saline in the balloon (4);

and step (eight), pulling out the prostate dilation catheter and indwelling the catheter.

Images