CN111803781A

CN111803781A - Telescopic crawling type catheter

Info

Publication number: CN111803781A
Application number: CN202010730352.8A
Authority: CN
Inventors: 徐盛龙; 刘金福
Original assignee: Xiamen New Concept Medical Technology Co ltd
Current assignee: Xiamen New Concept Medical Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-10-23

Abstract

The invention relates to a telescopic crawling type catheter which comprises an outer catheter and an inner guide wire, wherein the head of the outer catheter is provided with at least one urethral catheterization opening. The catheter has novel structure design, can solve the problems of difficult or failed catheterization caused by urethral calculus, prostatic hyperplasia, urethral stricture asphyxia and the like, is simple and convenient to operate, ensures the success of catheterization at one time, and can relieve the discomfort of a patient in the intubation process.

Description

Telescopic crawling type catheter

Technical Field

The invention relates to the field of medical instruments, in particular to a telescopic crawling type urinary catheter.

Background

Catheterization is a common operation of urinary surgery, and urethral calculus, prostatic hyperplasia, urethral stricture asphyxia and other reasons often cause catheterization difficulty or catheterization failure in actual clinic, great pain is brought to patients, and the tension relationship between doctors and patients is aggravated.

Disclosure of Invention

The present invention aims to provide a telescopic crawling urinary catheter to solve the above problems. Therefore, the invention adopts the following specific technical scheme:

the utility model provides a flexible crawl formula catheter, includes outer pipe and interior seal wire, the head of outer pipe is equipped with at least one catheterization mouth, its characterized in that, is equipped with flexible section on the position that outer pipe is close to the head, is equipped with preceding sacculus and back sacculus on the outer pipe at flexible section both ends, and the external diameter of preceding sacculus and back sacculus is the same with the external diameter of outer pipe when not pressurizing, is equipped with two on the position that outer pipe is close to the afterbody and pressurizes the device, two pressurize the device respectively with preceding sacculus and back sacculus fluid intercommunication.

Further, two pressurizing devices are symmetrically arranged on two sides of the outer conduit.

Further, the pressurizing device comprises a pressurizing sacculus, a sacculus interface and a front switch, a connecting pipe is arranged between the pressurizing sacculus and the outer catheter, the wall thickness of the connecting pipe is smaller than that of the front sacculus and that of the rear sacculus, and the front switch is arranged on the sacculus interface.

Further, the front switch is a plug or a one-way valve.

Further, the pressurizing device also comprises a rear switch, and the rear switch is arranged on the connecting pipe.

Further, the rear switch is a clip.

Further, the length of the telescopic section is between 2 and 3 centimeters.

Further, the distance from the front balloon to the head of the outer catheter is within 2 centimeters.

By adopting the technical scheme, the invention has the beneficial effects that: the catheter has novel structure design, can solve the problems of difficult or failed catheterization caused by urethral calculus, prostatic hyperplasia, urethral stricture asphyxia and the like, is simple and convenient to operate, ensures the success of catheterization at one time, and can relieve the discomfort of a patient in the intubation process.

Drawings

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

Fig. 1 is a schematic view of a telescopic crawling urinary catheter according to the present invention.

Detailed Description

The invention will now be further described with reference to the accompanying drawings and detailed description.

Fig. 1 shows a cross-sectional view of a telescopic crawling catheter according to the invention. The telescopic crawling type urinary catheter comprises an outer catheter 1, an inner guide wire 2, a front balloon 3, a rear balloon 4 and two pressurizing devices (hereinafter referred to as a first pressurizing device 5 and a second pressurizing device 6). The outer catheter 1 is usually made of medical silicone rubber and its head is provided with at least one catheter port 11. The outer conduit 1 is provided with a telescopic section 12 near the head, the length of the telescopic section 12 is moderate, and preferably, the length of the telescopic section 12 is between 2 and 3 centimeters. The front balloon 3 and the rear balloon 4 are respectively mounted on the front end and the rear end of the telescopic section 12 and have the same outer diameter as that of the outer catheter 1. A first and a second pressurizing means 5, 6 are arranged on the outer catheter 1 near the tail, in fluid communication with the front and

rear balloons

3, 4, respectively. That is, the first and second pressurizing means 5 and 6 are used to inflate and deflate the front and

rear balloons

3 and 4 to restore them. The inner guide wire 2 is inserted in the outer catheter 1, and is mainly used for assisting the insertion of the outer catheter 1 into the urethra. When the insertion of the catheter (the outer catheter 1) is blocked, the first pressurizing device 5 is operated to cause the front balloon 3 to bulge, expand the urethra and push the outer catheter 1 at the same time to cause the telescopic section 12 to be in a superposed state; then the second pressurizing device 6 is operated to swell the back sacculus 4 to tightly cling to the urethra to form tension, the first pressurizing device 5 is operated to shrink the front sacculus 3 into a catheter shape, the inner guide wire 2 is pushed to push the telescopic section 12 to stretch, the front sacculus 3 moves forward by one section, the outer catheter 1 passes through the blocked section of the urethra, then the front sacculus 3 is expanded, the back sacculus 4 is shrunk, the outer catheter 1 is pushed, the back sacculus 4 is expanded again, the inner guide wire 2 is pushed again, and the operation is repeated, so that the catheter can be easily inserted into the urethra to the bladder.

In the present embodiment, the first and second pressurizing means 5 and 6 are symmetrically arranged on both sides of the outer catheter 1. The first and second

pressurizing devices

5 and 6 are identical in structure. Specifically, the first and second

pressurizing devices

5 and 6 include first and second pressurizing balloons 51 and 61, first and second balloon interfaces 52 and 62, and first and

second front switches

53 and 63. Saline may be filled into the first and second inflatable balloons 51, 61 through the first and second balloon interfaces 52, 62. Connecting pipes are arranged between the first pressurizing balloon 51 and the second pressurizing balloon 61 and the outer catheter 1 and are respectively communicated with the front balloon 3 and the rear balloon 4; the wall thickness of the front balloon 3 and the rear balloon 4 is smaller than that of the front balloon 3 and the rear balloon 4, so that the front balloon 3 and the rear balloon 4 cannot be bulged when the first pressurizing balloon 51 and the second pressurizing balloon 61 are full of the catheter in a static state, and the outer diameter of the front balloon is the same as that of the front section of the catheter; the balloon is formed by the balloon 3 or the balloon 4 only when the first inflatable balloon 51 or the second inflatable balloon 61 is pressed. Specifically, the front balloon 3 is communicated with the first pressurizing balloon 51, and saline is filled from the first balloon interface 52 to fill the first pressurizing balloon 51, so that the front balloon 3 is fully inflated when the first pressurizing balloon 51 is squeezed; when the first pressurizing balloon 51 is released, the saline returns from the front balloon 3 to the first pressurizing balloon 51, the front balloon 3 is retracted to be tubular, and the first pressurizing balloon 51 is filled again. Similarly, the rear balloon 4 is communicated with the second pressurizing balloon 61, and the second pressurizing balloon 61 is filled with normal saline from the second balloon interface 62, so that the second pressurizing balloon 61 is full, and when the second pressurizing balloon 61 is squeezed, the front balloon 3 is full and bulges; when the second inflatable balloon 61 is released, the saline returns from the rear balloon 4 to the second inflatable balloon 61, the rear balloon 4 retracts to be tubular, and the second inflatable balloon 61 is filled again. A first front switch 53 and a second front switch 63 are provided on the first balloon hub 52 and the second balloon hub 62, respectively. In the illustrated embodiment, the first front switch 53 and the second front switch 63 are blocked. In this case, the first front switch 53 and the second front switch 63 are fixed to the first balloon port 52 and the second balloon port 62 by a connection cord. It should be understood that the first front switch 53 and the second front switch 63 may also be one-way valves. The first front switch 53 and the second front switch 63 are turned on when the saline injection is started and turned off after the saline injection is completed.

In addition, the first and second pressurizing means 5 and 6 may further include a first rear switch 54 and a second rear switch 64, and the first and second

rear switches

54 and 64 are provided on respective connection pipes between the first and second pressurizing balloons 51 and 61 and the outer catheter 1. Preferably, the first rear switch 54 and the second rear switch 64 employ clips for convenient operation. After successful intubation, the front balloon 3 can be inflated and the clip 54 can be clipped to the connecting tube to keep the front balloon 3 inflated, thereby preventing the catheter from falling off. Similarly, after successful intubation, the rear balloon 4 can be inflated and the clip 64 can be clipped to the connecting tube to keep the rear balloon 4 inflated, so as to achieve a leak-proof effect (i.e. prevent urine from flowing out of the outer catheter 1).

Preferably, the distance from the front balloon 3 to the head of the outer catheter 1 is within 2 cm, so that the intubation is smoother.

The following describes the tubing process of the present invention: when the catheter is in work, a proper amount of normal saline is filled from the balloon interfaces 52 and 62 until the pressurized balloons 51 and 61 are full, the balloon interfaces 52 and 62 are blocked by the

plugs

53 and 63, the catheter is inserted according to a normal catheter insertion operation method during catheter insertion, when the catheter (the outer catheter 1) is blocked, the first pressurized balloon 51 is firstly extruded, the front balloon 3 is expanded, the urethra is expanded, and the outer catheter 1 is simultaneously pushed, so that the telescopic section 12 is in a superposed state; then, the second pressurizing saccule 62 is extruded to enable the rear saccule 4 to swell and tightly adhere to the urethra to form tension, then the first pressurizing saccule 51 is loosened, the normal saline in the front saccule 3 returns to the first pressurizing saccule 51, the front saccule 3 is contracted into a catheter shape, the inner guide wire 2 is pushed to enable the telescopic section 12 to stretch, the front saccule 3 moves forward by one section, and the catheter passes through the blocked urethra section; then the first pressurizing sacculus 51 is extruded, the front sacculus 3 is expanded, the second pressurizing sacculus 62 is loosened, the rear sacculus 4 is contracted into a catheter shape, the outer catheter 1 is pushed, the telescopic section 12 is in a superposed state, the rear sacculus 4 is expanded, the inner guide wire 1 is pushed again, the steps are repeated, the operation is similar to that of earthworm crawling, and the catheter can be easily inserted into the urethra to the bladder. The whole tube placing process is simple to operate, can ensure that the tube is placed successfully at one time, and can reduce the uncomfortable feeling of a patient in the tube inserting process.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a flexible crawl formula catheter, includes outer pipe and interior seal wire, the head of outer pipe is equipped with at least one catheterization mouth, its characterized in that, is equipped with flexible section on the position that outer pipe is close to the head, is equipped with preceding sacculus and back sacculus on the outer pipe at flexible section both ends, and the external diameter of preceding sacculus and back sacculus is the same with the external diameter of outer pipe when not pressurizing, is equipped with two on the position that outer pipe is close to the afterbody and pressurizes the device, two pressurize the device respectively with preceding sacculus and back sacculus fluid intercommunication.

2. The telescopic crawling catheter according to claim 1, wherein two pressurizing means are symmetrically arranged on both sides of the outer catheter.

3. The telescopic crawling type urinary catheter according to claim 1, wherein the pressurizing device comprises a pressurizing balloon, a balloon interface and a front switch, a connecting pipe is arranged between the pressurizing balloon and the outer catheter, the wall thickness of the connecting pipe is smaller than that of the front balloon and the rear balloon, and the front switch is arranged on the balloon interface.

4. A telescopic crawling catheter according to claim 3, characterised in that the front switch is a block or a one-way valve.

5. The telescopic crawling catheter according to claim 3, wherein the pressurizing means further comprises a rear switch, and the rear switch is provided on the connection tube.

6. The telescopic crawling catheter according to claim 5, wherein the rear switch is a clip.

7. A telescopic crawling catheter according to claim 1, characterised in that the length of the telescopic section is between 2 and 3 cm.

8. A telescoping crawling urinary catheter according to claim 1, wherein the front balloon is within 2 cm of the outer catheter head.