JPS5922561A - Urine dynamical cathetel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved urodynamic catheter structure that allows urodynamic testing, particularly of the lower urinary tract.

BACKGROUND OF THE INVENTION Mechanical testing is a diagnostic procedure aimed at investigating the physiological properties of the lower urinary tract, namely the bladder and urethra.

The bladder and urethra are a single organ that work together to serve the dual purpose of collecting and transporting urine. The bladder is primarily composed of small muscles, many of which are under autonomic control. Muscle bundles act from layer to layer in different directions.

Urinary volume regulation in the bladder is mainly performed by the viscoelasticity of the organ. In healthy individuals, the bladder wall is able to expand as the bladder fills with urine without a significant increase in its tension. One of the main urodynamic tests is to fill the bladder with saline and measure intravesical pressure at the same time. This pressure versus volume diagram during filling is called the cystometrogram, and the first part of this volume versus pressure diagram is almost uniform in healthy individuals. When the individual signals to urinate or automatically induces urination, the pressure within the bladder increases.

Another standard mechanical test is called the urethral pressure profile (UPP). This examination is primarily performed by inserting a catheter having a side hole and a lumen communicating with the side hole. The catheter is steadily withdrawn from the urethra at a nearly constant rate while diluted saline is pumped into the lumen and expelled from the side hole at a predetermined rate. Obtain [JPP] with a diagram of the back pressure in the line between the pump and the side hole versus the physical distance of the side hole along the urethra. Typically, as the aperture passes through the constriction, the back pressure, normal or abnormal, increases, resulting in an upwardly sloping line in the distance versus pressure graph. will be displayed as .

Another predisposing factor for the above-mentioned tests is the length of the functional contour, which is basically the length of the urethra to obtain the pressure caprofil.

One of the important parameters obtained from the urethral pressure caprofil test (UP'P) is what is called the maximum urethral closure pressure, which is the difference between the maximum pressure obtained by the LIPP test and the internal pressure of the bladder. It is.

Prior patents related to the content of the present invention are as follows.

No. 4,136,681 issued January 30, 1979 to Nido Note 11. Hon.

No. 168,703 to Genes Kenigsberg, issued January 30, 1979.

US Patent No. 4 to Flodley Song, issued March 4, 1980 1. 9 1 1 9 6 issue.

Published May 5, 1981 by Terry N. US Pat. No. 4,217,911 to Layton.

No. 4,252,131 to Hong et al., issued February 24, 1981.

No. 4,006,7'35 to Hittman et al., issued February 8, 1977.

No. 4,023,562 to Heinetz et al., issued May 17, 1977.

N., published November 25, 1969. US Pat. No. 3,480,003 to A. Crites.

Glenn N., published May 5, 1981. US Pat. No. 4,265,243 to Taylor.

Published November 24, 1981 by Terry N. US Pat. No. 4,301,811 to Layton.

Published April 8, 1969, L. J. US Pat. No. 3,437,088 to Bielinski.

No. 4,214,593 to Influs et al., issued July 29, 1980.

General Description of the Invention The present invention aims to provide an improved urodynamic catheter that can be used in performing all of the above-mentioned tests.

In particular, the present invention provides a urodynamic catheter that includes a tube having at least three lumens and one closed guiding end. A first of the lumens communicates with a first side hole in the tube disposed a first distance from the guide end. The second lumen communicates with a second side hole disposed a second distance from the guide end, the second distance being greater than the first distance. The third lumen is the third lumen from the guide end.
It communicates with a third side hole in the pipe that is arranged at a distance, and the third distance is larger than the second distance.

A variation of the catheter described above includes four lumens within the tube, which are located between the second and third side holes and inside an inflatable sphere attached to the tube. It's communicating.

Two embodiments of the present invention will be described below with reference to the drawings. Note that the same parts in the figures are designated by the same numbers.

DETAILED DESCRIPTION OF THE EMBODIMENTS First, FIG. 1 shows a catheter io which, as is clear from FIG. 3, has a tube 12 and four internal passageways or lumens t4. Contains i5;16 and j7.

One of the lumens, designated 16 in FIG.
The first guide hole is installed at a place slightly back from the guide end of the second guide.
It communicates with a dug hole 20 having an opening 22 on the side thereof. In the illustrated embodiment, the guide end 24 has an aperture 22
The distance to this point is approximately 7'1llJ. Since aperture 22 and lumen 16 are utilized for filling the bladder, aperture 22 must be located fairly close to the guiding end 24 of the catheter. The actual guide end 24 is heat-sealed to close all lumens of the closure member 2.
A lid is placed over the tube 12 by means 6, or is secured to the notched end of the tube 12.

As can be seen from the drawings, the closed end 24 is rounded to facilitate insertion. The closure itself is approximately 3 cm long, and the distance between the actual notched end of the tube and the location of the aperture 22 is approximately 4 cm.
It's a struggle. This special distance can be changed, but
It will be appreciated that it is better to arrange the filling aperture 22 as close as possible to the guide end 24. A second lumen, indicated at 15 in FIG. 3, communicates via a bore with an aperture 28 in the second side of the tube 12. This lumen 15
and aperture 28 are intended to monitor intravesical pressure as the bladder is being filled through aperture 22. As a result, a cystometry diagram is created. This diagram is a diagram (C) of intravesical pressure (pressure inside the bladder) with respect to the volume of the contents of the bladder. The third lumen, designated 14 in FIG.
It communicates with a borehole having a third side aperture 30 located further back from the guide end 24.

Aperture 30 is used to monitor closure pressure during cystometry. The location of the aperture 30 varies depending on the location of the urethral sphincter in male and female patients.

Furthermore, the aperture 30 and its associated internal +y 14 are used to measure the urethral pressure profile (IJ P I?), and the UPP determines the compliance along the urethral wall. As mentioned above, constant saline solution (0,9
% NaCl) is fed through the hole determining IJ I) I' and the back pressure is measured and plotted against a longitudinal position along the urethra.

The last lumen, designated 17 in FIG. 3, communicates with the interior of the balloon 32 via a borehole.

The balloon 32, which is made of an inflatable material and is configured to have a substantially spherical shape when inflated, has two collars 34 and 35, through which the tube 12 passes, and They are heat sealed or otherwise secured to the tube 12 in a leaktight manner. The balloon 32 is configured to wrap around the tube 12 when deflated so as not to interfere with insertion or withdrawal of the catheter. By supplying high-pressure liquid through the lumen 17, the balloon 32 is inflated, which prevents the catheter from falling during the test and allows for an upright intravesical pressure test. or urinary incontinence (stress ataxia) during some tests.
ntinance ]) can also be detected.

It will be appreciated that during the U P P test, the balloon 32 deflates and deflates relative to the tube 12.

On the outside, that is, the end 37 that is not inserted, of the tube J2,
A plurality of small square-lumen tubes 39 are connected and are configured to be connected to various pumps, gauges, etc. used in the above-mentioned urodynamic tests. This connection is generally made by using a small coupling member embedded with four small diameter hole pins, each end of which fits snugly into one of the lumens of tube 12. The other end is configured to fit snugly within a single lumen of one of the tubes 39. Once these connections are completed, the sleeve 41 is fitted around the connector and heat sealed or otherwise secured in place.

The structure of this connection position is a normal one, and detailed explanation and illustration will be omitted.

Although not shown in FIG. 1, the pipe 12 has tJPi)
A number of markings, particularly used during the inspection of a machine, are placed at equal intervals along its entire length. Typically these markings are spaced 1 cm apart.

Referring to FIG. 2, there is shown a modification of the catheter of the present invention, which is essentially free of the balloon 32 and is first characterized in that it has no side openings communicating with the inside of the balloon. It is different from the one shown. Other differences are aperture 30
This relates to the position of a. That is, in FIG. 2, the position is the opening 3o relative to the guide end 24 in FIG.
It is closer to the guide end 24a than the guide end 24a. However, as mentioned above, the location of the aperture 30 (30a) will vary depending on the patient's gender and ultimately the user's preference.

The remaining holes in FIG. 2 are designated by the same numbers as in FIG.

It will be appreciated that the tube 12 in the embodiment of FIG. 2 is generally a three lumen tube, such as that shown at 44 in FIG. These lumens are designated by the numbers 46, 47 and 48. However, for the embodiment of FIG. 2, there is no problem in using a tube configured with four lumens; will be closed. Generally, the tube used in the present invention should have at least a number of lumens corresponding to the holes (including the hole for the balloon, if any), but one extra lumen should be provided. It will be seen that there may be some, but in this case they are simply not used.

From the following description, it will be clear that two embodiments of the catheter of the present invention are used to establish the parameters described in the introductory "Background of the Invention" section.

It will further be appreciated that the lumen communicating with aperture 30 (30a) can be used to monitor closure pressure during cystometry.

In FIG. 2, a series of mark locations 50 are illustrated adjacent tube 12 to indicate the locations of longitudinally spaced marks used during LIPP testing.

Although it is desirable to have a suitable concept of an appropriate or satisfactory =J-method for various spatial arrangements of holes, these are not meant to be limiting.

In a satisfactory catheter constructed according to FIG. 1, aperture 22 is located 7 y away from guide end 24, and the spacing between apertures 22 and 28 is approximately 1 ci. Therefore, the distance from the guide end 24 to the aperture 28 is approximately three times the distance from the guide end 2/I to the aperture 22.

The optimum distance from aperture 22 to aperture 30 is approximately 8 cm if balloon 32 is placed somewhat closer to aperture 30 than aperture 28.

In the case of the catheter of FIG. 2, the aperture 22 is also
4a, and the distance between the apertures 22 and 28 is about 1 Crn. The distance from aperture 22 to aperture 30a is approximately 7 crn. Similarly, these distances will vary, inter alia, due to the fact that the location of the aperture 30 (30a) will depend to some extent on the gender of the patient as well as on fixed examiner preferences.

Each lumen has a diameter in the range of approximately 0.8 w, and the ostium is approximately 3
．． It has a diameter of 3mm.

While specific embodiments of the invention have been illustrated in the accompanying drawings and described in the foregoing disclosure, it will be appreciated that changes and modifications may be made thereto without departing from the spirit of the invention as set forth in the appended claims. It will be obvious to the business owners.

[Brief explanation of drawings]

FIG. 1 is a front view including a partial cutout of a first embodiment according to the synthetic force force element-teno section of the present invention, and FIG. 2 is a front view including a partial cutout of the second embodiment. Figure 3 is an enlarged sectional view taken along line i-3 in Figure 1, and Figure 4 is an enlarged sectional view taken at line 4-4 in Figure 2.
An enlarged cross-sectional view of the line. IO: Catheter 12.44: Tube 14.15, 16, 17, 46, 47, 48: Internal passage' (lumen) 20: Digging hole 22.28, 30: Opening hole 24: Guide end 26: Closed inclined member 32: Balloon 39: Small science - lumen tube. Procedural amendment (spontaneous) September 2, 1989, Director General of the Japan Patent Office, 1. Indication of the case, Patent Commissioner No. 127047 of 1982, 2. Name of the invention, Urodynamic catheter 3, Supplementary IF person case. Related: Applicant Urotetsu Inc. 4, Agent Address: 1-9-20-5 Akasaka, Minato-ku, Tokyo, Documents certifying the authority to represent the subject of the amendment, the column for the applicant's representative in the application, and drawings. 6. Contents of amendment (1) The column for applicant representative in the application form will be amended as shown in the attached sheet. (2) Submit one copy of the power of attorney and one copy of the same translation. (3) Submit official drawings as attached.

Claims (1)

Claims: (1) comprising a tube having at least three lumens and one closed guide end, a first of the lumens extending a first distance from the guide end; a first site of the tube disposed therethrough, a second of the lumens communicating with an aperture of the first site of the tube disposed a second distance from the guide end; a third of the lumens communicates with an aperture in a second lumen of the tube, the second distance being greater than the first distance, and a third of the lumens extending from the guiding end to a third aperture of the tube; The urodynamic catheter communicates with apertures in a third side of the tube spaced apart, the third distance being greater than the second distance. (2. The catheter according to claim 1 further includes:
A fourth lumen is included within the tube, the fourth lumen communicating with the interior of an inflatable balloon placed in the tube, and the balloon is connected to the second and third apertures. (3) In the catheter according to claim 1 or 2, the second distance is about 3 times the first distance.
Catheter that is double. (4) In the catheter according to claim 1 or 2, the third distance is about 4 times the second distance.
Catheters that are 5.5 to 5.5 times larger. (5) In the catheter according to claim 1, the first. The ratio of the second and third distances is approximately]23
: Catheter which is 1.25. (6) In the novelty chil according to claim 2, the ratio of the Jth, second and third distances is approximately l:3.
:11 catheter. (Force) The catheter according to claim 5 or 6, wherein the first distance is approximately 0.7 m. (8) The catheter according to claim 2 or 6, wherein the first distance is approximately 0.7 m. , the sphere is centered at a position along the tube closer to the third hole than to the second hole. (9) Claims 1, 2, or 3. A catheter in which all of the guide ends are closed by rounded closure members that seal the lumen of the catheter.+10) Claims 1, 2 or 3.
The catheter of paragraph 1 further includes markings equally spaced along the tube. (11) The catheter according to claim 1, 2, or 3 further comprises markings arranged at equal intervals of 1 m along the tube.