CN103815894B - Double-cavity urethra piezometer tube connecting device and connecting method - Google Patents

Abstract

The invention discloses a double-cavity urethra piezometer tube connecting device which comprises a splitter (1), a single-cavity pipe A (2), a single-cavity pipe B (3), a double-cavity pipe (4) and a plug (5). A primary runner (6) and two secondary runners both communicated with the primary runner (6) are arranged inside the splitter (1), the double-cavity pipe (4) is arranged in the primary runner (6), the side wall of a cavity A (9), close to the secondary runner B (8), of two cavities in the double-cavity pipe (4) is provided with a side hole (10) communicated with the secondary runner B (8), and the plug (5) is arranged in the cavity A (9). The invention further discloses a double-cavity urethra piezometer tube connecting method. According to the double-cavity urethra piezometer tube connecting device and method, the technical method that the side hole and the plug are arranged in the double-cavity pipe is adopted, defects existing in existing connecting methods are ingeniously avoided, and the double-cavity urethra piezometer tube connecting device is simple in process, convenient to manufacture, high in finished product yield, and high in production efficiency and practicality; in addition, the double-cavity urethra piezometer tube connecting device is simple in structure, reliable in product performance and capable of fully meeting clinical application requirements.

Description

A double-chamber urethral pressure measuring tube connection device and connection method

technical field

The invention relates to a medical double-cavity urethral pressure measuring tube, in particular to a connecting device and a connecting method for a double-cavity urethral pressure measuring tube.

Background technique

Urodynamics is a subdiscipline of urology. Carrying out urodynamic research is not only of great practical value for clinical diagnosis and treatment of voiding dysfunction diseases, but also of great scientific value for voiding physiology, neurourology, gynecological urology and related pharmacology research. At present, the indicators directly measured by routine urodynamics are internal pressure of the bladder, urethra, and rectum, urinary flow rate, and urine output. The most commonly used method is the invasive urodynamic examination method: inserting a pressure measuring tube to directly measure the pressure change in the bladder, and at the same time measure the urine flow rate; pull the pressure measuring tube with constant speed and constant flow perfusion to measure the pressure distribution of each segment of the urethra; use the AG , PQ diagram analysis, diagnosis of disease. This method maximizes the degree of fit between the measurement results and the real situation.

In order to measure bladder pressure and urethral pressure, it is usually necessary to perfuse the bladder and urethra with liquid. During perfusion, a double-lumen manometry catheter is required, and the human bladder pressure and urethral pressure are measured by using the principle that the pressure of the connected circuit on the contour line is equal everywhere. Measurement. At present, the commonly used pressure transmission is through the double-lumen piezometric tube inserted into the human bladder. The double-lumen tube has two single-lumen connection ends A and B respectively. One end A enters the bladder. In order to reduce the suffering of patients, most of these double-lumen pressure measuring tubes are designed with thinner diameter and soft material, such as 6Fr, 8Fr, 9Fr, 12Fr, etc. The cavity is connected with two connecting pipes respectively. The material of the double-lumen tube is PVC polymer material, and generally the double-lumen tube can only be converted into two single-lumen tubes by bonding. After researching the existing products in the current market and the connection methods of foreign related patent catheters, there are generally the following connection methods for the branch of the double-lumen tube:

1) Two thin connecting catheters are used as transfers, one end is inserted into the double-lumen end of the double-lumen tube respectively and bonded, and the other end is respectively inserted into two single-lumen tubes for bonding, and then glued and fixed with the upper and lower covers of the branch . It is more difficult to insert the thin connecting tube of this design, and the bonding process is more, and the process is more troublesome.

2) The branch is specially designed, and the single end still has a small outlet, which can be directly inserted into the double-cavity end. This method is only suitable for double-lumen catheters with large double-lumen openings, and is not suitable for the double-lumen urethral pressure measuring tubes used in urodynamic analyzers.

3) Insert two small catheters into the double-lumen tube in advance, then design a branch mold, and inject the connected double-lumen tube as a part into the branch on the injection molding machine. This method has high requirements on the material of the double-lumen tube , high temperature resistance, high stability, not suitable for existing catheters.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a simple, fast and efficient dual-lumen urethral pressure measuring tube connection device and connection method for detecting lower urinary tract dysfunction in patients with a urodynamic analyzer.

The purpose of the present invention is achieved through the following technical solutions: a double-lumen urethral pressure measuring tube connection device, which includes a branch, a single-lumen tube A, a single-lumen tube B, a double-lumen tube and a plug, the branch of the branch There is a main channel and two branch channels connected with the main channel inside, and the main channel and the two branch channels have an outer end connected to the external space and an inner end located inside the branch. The inner end of the runner A in the two runners is connected to the inner end of the main channel, and the inner end of the other runner B of the two runners is connected to the main channel from the side wall of the main channel, and a double channel is installed in the main channel. The depth of the double-lumen tube extending into the main channel is greater than the depth of the connection between the main channel and the shunt channel B. The double-lumen tube is provided with two axially parallel and separated lumens. Among the two lumens, the side wall of the lumen A close to the shunt B is provided with a side hole communicating with the shunt B, and a side hole is arranged in the lumen A between the port where the lumen A extends into the main flow channel and the side hole. The plug for blocking cavity A, single-lumen tube A and single-lumen tube B are respectively installed in the shunt A and shunt B.

The main channel is a trumpet shape whose inner diameter gradually decreases from the outside to the inside, and a sleeve is arranged between the outer end of the main channel and the double-lumen tube to seal the gap between the main channel and the double-lumen tube.

The main channel and the branch channel A are coaxially arranged, and the included angle between the branch channel B and the main channel is 20°-60°.

Adopting the connection method of the double-cavity urethral pressure measuring tube connection device, it includes the following steps: using a sealant to form a plug to block the cavity A, and opening the side hole on the side wall of the double-cavity tube , insert the double-lumen tube into the main channel of the branch, make the side hole communicate with the shunt B, and then insert and fix it with a sleeve; then insert the single-lumen tube A and the single-lumen tube B into the shunt A and the shunt B respectively and fix them , so as to complete the connection of the double-lumen urethral manometric tube.

The present invention has the following advantages: the present invention skillfully avoids the defects of the existing double-cavity piezometric tube manufacturing method by combining the technical method of opening side holes and setting plugs on the double-cavity tube, and has the advantages of simple process and easy production. The invention has the advantages of convenience, high yield, high production efficiency and strong practicability; and the invention has simple structure, reliable product performance, and can fully meet clinical application requirements.

Description of drawings

Fig. 1 is the structural representation of the present invention

In the figure, 1-branch, 2-single-lumen tube A, 3-single-lumen tube B, 4-double-lumen tube, 5-plug, 6-main channel, 7-shunt A, 8-shunt B, 9-chamber A, 10-side hole.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

As shown in Figure 1, a double-lumen urethral pressure measuring tube connection device includes a branch 1, a single-lumen tube A2, a single-lumen tube B3, a double-lumen tube 4 and a plug 5, the inside of the branch 1 A main flow channel 6 and two branch flow channels connected with the main flow channel 6 are provided, and the main flow channel 6 and the two flow flow passages each have an outer end communicating with the external space and an inner end located inside the splitter 1, The flow channel is a hole-shaped channel arranged inside the branch device 1, the outer end is the outer port of the hole-shaped channel, and the inner end is the inner port of the hole-shaped channel. The inner end of the runner A7 in the two runners communicates with the inner end of the main channel 6, and the inner end of the other runner B8 in the two runners communicates with the main channel 6 from the side wall of the main channel 6, that is, the runner The inner end of B8 communicates with the main channel 6 from the middle of the main channel 6, and the double-lumen tube 4 is installed in the main channel 6, and the depth of the double-lumen tube 4 extending into the main channel 6 is greater than that of the main channel 6 and the branch channel B8 The depth at which the communication part is located, that is, the shunt channel A7 communicates with the port where the double-lumen tube 4 extends into the main channel 6, and the shunt channel B8 is located at the side wall of the double-lumen tube 4, and the double-lumen tube 4 is provided with two axial The chambers arranged in parallel and separated from each other, among the two chambers, the side wall of the chamber A9 close to the shunt B8 is provided with a side hole 10 communicating with the shunt B8, which is located at the port where the chamber A9 extends into the main flow channel 6 A plug 5 for blocking the cavity A9 is arranged in the cavity A9 between the side hole 10, a single-lumen tube A2 and a single-lumen tube B3 are respectively installed in the flow channel A7 and the flow channel B8, and the main flow channel 6 is connected to the double-cavity tube. There are tight connections between the lumens 4, between the shunt A7 and the single-lumen tube A2, and between the shunt B8 and the single-lumen tube B3.

Preferably, the main channel 6 is a trumpet shape whose diameter gradually decreases from the outside to the inside, the inner end of the main channel 6 is tightly connected to the double-cavity tube 4, and the outer end of the main channel 6 is connected to the double-cavity tube. A sleeve for sealing the gap between the main channel 6 and the double-lumen tube 4 is arranged between the tubes 4 .

Preferably, the main channel 6 and the branch channel A7 are coaxially arranged, and the included angle between the branch channel B8 and the main channel 6 is 20°-60°.

The plug 5 is formed by using a sealant to block the cavity A9.

Adopt the connection method of described a kind of double-lumen urethral pressure measuring tube connecting device, it comprises the following steps: form a plug 5 to block lumen A9 with sealant, and set up described on the side wall of double-lumen tube 4 Side hole 10, insert the double-lumen tube 4 into the main flow channel 6 of the branch device 1, make the side hole 10 communicate with the shunt channel B8, and then insert and fix it with a sleeve; then insert the single-lumen tube A2 and single-lumen tube B3 into the shunt channel respectively A7 and shunt B8 are fixed together to complete the connection of the double-lumen urethral pressure measuring tube.

Claims (4)

1. a two-chamber urethra pressure-measuring pipe connecting device, it is characterized in that: it comprises splitter (1), single lumen catheter A(2), single lumen catheter B(3), double lumen tube (4) and plug (5), the inside of described splitter (1) is provided with a sprue (6) and two sub-runners be all communicated with sprue (6), described sprue (6) and two sub-runners all there is an outer end being communicated with space outerpace and one be positioned at the inner the inner of splitter (1), sub-runner A(7 in two described sub-runners) the inner be communicated with sprue (6) the inner, another sub-runner B(8 in two described sub-runners) the inner be communicated with sprue (6) from the side-walls of sprue (6), double lumen tube (4) is installed in sprue (6), and double lumen tube (4) stretches into the inner degree of depth of sprue (6) is greater than sprue (6) and sub-runner B(8) degree of depth residing for double lumen tube (4) of connectivity part, be provided with two axis in described double lumen tube (4) to be arranged in parallel and the tract mutually separated, near sub-runner B(8 in two described tracts) tract A(9) sidewall on be provided be communicated with sub-runner B(8) side opening (10), be positioned at tract A(9) stretch into tract A(9 between the port of sprue (6) and this side opening (10)) be provided with shutoff tract A(9) and plug (5), sub-runner A(7) and sub-runner B(8) in be separately installed with single lumen catheter A(2) and single lumen catheter B(3).

2. a kind of two-chamber urethra pressure-measuring pipe connecting device according to claim 1, it is characterized in that: described sprue (6) is the trumpet type reduced gradually along internal diameter from outside to inside, is provided with the sleeve pipe in gap between seal primary flow passage (6) and double lumen tube (4) between the outer end of sprue (6) and double lumen tube (4).

3. a kind of two-chamber urethra pressure-measuring pipe connecting device according to claim 1, is characterized in that: described sprue (6) and sub-runner A(7) for being coaxially set, described sub-runner B(8) and sprue (6) between angle be 20 ° ~ 60 °.

4. adopt the method for attachment as a kind of two-chamber urethra pressure-measuring pipe connecting device in claims 1 to 3 as described in any one, it is characterized in that: it comprises the following steps: form a plug (5) with fluid sealant and block tract A(9), and on the sidewall of double lumen tube (4), offer described side opening (10), double lumen tube (4) is inserted the sprue (6) of splitter (1), make side opening (10) and sub-runner B(8) be communicated with, then insert fixing with sleeve pipe; Then by single lumen catheter A(2) and single lumen catheter B(3) insert sub-runner A(7 respectively) and sub-runner B(8) and fixing, the connection of two-chamber urethra pressure-measuring pipe is completed with this.