CN211798188U - Prostate dilating catheter - Google Patents

Abstract

The utility model provides a prostate expansion pipe (10), vertical extension (12) and pipe head (13) including integrative setting, pipe (10) still include four communicating pipes, wherein, be equipped with first liquid outlet (17), second liquid outlet (18), third liquid outlet (19) and fourth liquid outlet (25) on the wall of vertical extension (12), wherein, four respective at least some of communicating pipes are located inside vertical extension (12), four respective one ends of communicating pipes respectively with first liquid outlet (17), second liquid outlet (18), third liquid outlet (19) and fourth liquid outlet (25) intercommunication to the outside of vertical extension (12) is extended to the wall that vertical extension (12) was worn out respectively to four respective other ends of communicating pipes. The prostate dilating catheter according to the utility model can be used for constructing a five-cavity four-bag prostate dilating catheter component so as to effectively treat prostate hyperplasia diseases.

Description

Prostate dilating catheter

Technical Field

The utility model relates to the technical field of medical equipment, specifically, relate to a prostate dilatation catheter.

Background

In the middle-aged and elderly people, the phenomenon of suffering from prostatic hyperplasia is very common, and with the change of aging of the global population, the senile disease also tends to increase greatly. Pathological analysis of prostate hyperplasia was: the male external urethra is tightly wrapped with a layer of fine soft tissue, the soft tissue is the prostate, the fine degree of the soft tissue changes with age and becomes gradually loose, so that the thickness of the prostate layer is thickened, the thickened soft tissue cannot expand outwards and only develops inwards due to the fact that the periphery of the prostate layer is wrapped by body tissues, and the urethra is gradually compressed after the prostate is thickened to a certain degree. The urethra at this location will therefore become constricted by the hyperplasia of the prostate gland, thereby affecting urination and even creating problems with difficulty in urination. In severe cases, it may cause the patient to have no urination for many days, which is very painful.

The better measure for treating the disease at the present stage is still an operation treatment method for decades ago, although the traditional treatment method can solve the pain of the patient, the cost is high, the patient needs to bear the pain of the operation in the treatment process, a large amount of Chinese and western medicines are needed for anesthesia, inflammation diminishing, pain relieving, healing promotion and the like, and the problems of long treatment period and the like exist. Patients can also choose to go to hospital for catheterization to relieve pain, but too many catheterization times can promote inflammation of the inner wall of the urethra, and most patients eventually have to choose surgery to remove the prostate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art at least partially and provide a medical device element for treating the prostatic hyperplasia diseases or relieving pain of patients with prostatic hyperplasia at least.

The utility model also aims to provide a prostate dilating catheter for constructing the prostate dilating catheter component, so as to effectively treat the hyperplasia of prostate.

The utility model also aims to provide a prostate dilating catheter with simple structure.

In order to achieve one of the above purposes, the technical solution of the present invention is as follows:

a prostate dilatation catheter comprises a longitudinal extension part and a catheter head which are integrally arranged, and also comprises a first communicating pipe, a second communicating pipe, a third communicating pipe and a fourth communicating pipe,

wherein, the wall surface of the longitudinal extension part is provided with a first liquid outlet, a second liquid outlet, a third liquid outlet and a fourth liquid outlet,

wherein, first communicating pipe, second communicating pipe, third communicating pipe and fourth communicating pipe are respectively at least partly located inside longitudinal extension portion, first communicating pipe, second communicating pipe, third communicating pipe and fourth communicating pipe respectively one end with first liquid outlet, second liquid outlet, third liquid outlet and fourth liquid outlet intercommunication to first communicating pipe, second communicating pipe, third communicating pipe and fourth communicating pipe respectively the other end wear out the wall of longitudinal extension portion respectively and extend to the outside of longitudinal extension portion.

According to a preferred embodiment of the present invention, the longitudinal extension portion, the guide tube head, the first communicating tube, the second communicating tube, the third communicating tube and the fourth communicating tube constitute an integral structure.

According to a preferred embodiment of the present invention, the at least a portion of the first communicating pipe, the second communicating pipe, the third communicating pipe, and the fourth communicating pipe is embedded in the wall surface of the longitudinal extending portion.

According to the utility model discloses a preferred embodiment, two liang of different in the longitudinal position of first liquid outlet, second liquid outlet, third liquid outlet and fourth liquid outlet on the wall of longitudinal extension to two liang of different in the circumferential position of first liquid outlet, second liquid outlet, third liquid outlet and fourth liquid outlet on the wall of longitudinal extension.

According to the utility model discloses a preferred embodiment, first liquid outlet, second liquid outlet, third liquid outlet and fourth liquid outlet are along the circumference evenly distributed of longitudinal extension on the wall of longitudinal extension, and first liquid outlet is 90 degrees with the circumferential angle of second liquid outlet on the wall of longitudinal extension promptly, and the circumferential angle of second liquid outlet and third liquid outlet on the wall of longitudinal extension is 90 degrees, and the circumferential angle of third liquid outlet and fourth liquid outlet on the wall of longitudinal extension is 90 degrees, and the circumferential angle of fourth liquid outlet and first liquid outlet on the wall of longitudinal extension is 90 degrees.

According to a preferred embodiment of the present invention, the distance between the first liquid outlet and the second liquid outlet in the longitudinal direction of the longitudinal extension is between 3 cm and 10 cm, the distance between the second liquid outlet and the third liquid outlet in the longitudinal direction of the longitudinal extension is between 8 cm and 20 cm, and the distance between the first liquid outlet and the fourth liquid outlet in the longitudinal direction of the longitudinal extension is between 3 cm and 10 cm.

According to a preferred embodiment of the present invention, the interior of the longitudinal extension is hollow, and one end of the longitudinal extension, which is away from the catheter head, has an open port, the catheter further includes at least one fifth liquid outlet, which is disposed on the catheter head, and the catheter head includes a hollow portion located at the center of the catheter head, so that the fifth liquid outlet communicates with the open port through the hollow portion.

According to a preferred embodiment of the present invention, the at least one fifth liquid outlet includes a liquid outlet provided at a tip end of the pipe head and a liquid outlet provided at a side wall of the pipe head.

According to a preferred embodiment of the invention, the catheter head has a stepped outer contour and the end of the catheter head remote from the longitudinal extension has an arc-shaped contour.

According to a preferred embodiment of the invention, the central axis of the catheter head is inclined with respect to the central axis of the longitudinal extension.

According to a preferred embodiment of the present invention, the angle between the central axis of the catheter head and the central axis of the longitudinal extension is 10-20 degrees.

According to a preferred embodiment of the invention, the wall of the longitudinal extension is provided with an outwardly protruding annular flange.

According to the utility model discloses a preferred embodiment is provided with four sections annular flanges on the wall of longitudinal extension portion, and four sections annular flanges set up on the different longitudinal position on the wall of longitudinal extension portion, and first liquid outlet is located between first annular flange and the second annular flange, and the second liquid outlet is located between second annular flange and the third annular flange to the third liquid outlet is located between third annular flange and the fourth annular flange.

According to a preferred embodiment of the invention, a plurality of stiffening ribs are provided on the inner surface of the wall of the longitudinal extension between the first annular flange and the third annular flange, said stiffening ribs being distributed along the inner surface circumference of the wall of the longitudinal extension or, alternatively, said stiffening ribs being distributed longitudinally along the inner surface of the wall of the longitudinal extension.

According to a preferred embodiment of the present invention, the catheter further comprises a catheter adapter disposed at an end of the longitudinal extension remote from the catheter head.

According to a preferred embodiment of the invention, a marking line is provided on the wall of the end of the longitudinal extension remote from the catheter head, opposite the inclined catheter head, to mark the direction of inclination of the catheter head.

According to the utility model discloses a prostate expansion pipe can be used for constructing five chamber four sacs prostate expansion pipe subassemblies, with effective treatment prostate hyperplasia illness, alleviate prostate hyperplasia patient pain, and simple structure, and convenient operation, the treatment overall process need not to operate, avoided the scalpel to cut the skin bitter, also need not a large amount of well, western medicine anaesthetizes, diminish inflammation, alleviate pain, promote healing etc, the treatment environment is simple relatively, also need not the recovered process of being in hospital after the treatment, can go out of hospital after clinical treatment, the overall process operation of treatment is also very simple and easy, and is convenient. According to the evaluation of clinical test doctors, the design is simple, efficient and beneficial to doctors and patients.

Drawings

Fig. 1 is a schematic view of a prostate dilation catheter according to an embodiment of the present invention;

fig. 2 is a schematic view of a latex cannula according to an embodiment of the invention;

FIG. 3 is a cross-sectional view of the condom tube of FIG. 2 along section A-A;

fig. 4 is a schematic view of an inner bladder section of a latex sleeve according to an embodiment of the invention;

fig. 5 shows an outer bladder section of a latex sleeve according to an embodiment of the invention;

fig. 6 is a schematic view of a five-lumen, four-balloon prostate dilation catheter assembly according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the five-lumen, four-balloon prostate dilation catheter assembly of FIG. 6 taken along section B-B; and

fig. 8 is a cross-sectional view of the five-lumen, four-balloon prostate dilation catheter assembly of fig. 6 taken along section C-C.

Detailed Description

Exemplary embodiments of the present invention will hereinafter be described in detail with reference to the accompanying drawings, wherein like or similar reference numerals denote like or similar elements. Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.

In order to solve the problems mentioned in the background section, designers have conducted various investigations and researches to design a medical device for treating prostatic hyperplasia diseases by non-operative physical therapy, namely a five-cavity four-bag prostate expansion catheter assembly. The medical instrument is a very simple clinical medical instrument, the operation is not needed in the whole treatment process, the skin is prevented from being cut by a scalpel, a large amount of Chinese and western medicines are not needed for anesthesia, inflammation diminishing, pain relieving, healing promotion and the like, the treatment environment is relatively simple, the process of hospitalization and rehabilitation is not needed after treatment, the patient can be discharged immediately after clinical treatment, and the whole treatment process is very simple and convenient to operate. According to the evaluation of clinical test doctors, the design is simple, efficient and beneficial to doctors and patients.

The utility model discloses a four bag prostate expansion catheter subassemblies in five chambeies mainly comprise prostate expansion pipe and latex sleeve pipe, and latex sleeve pipe cover is on the pipe to form the cavity between latex sleeve pipe and pipe, the cavity passes through communicating pipe and outside intercommunication, with the help of latex sheathed tube elasticity, the latex sleeve pipe can expand when letting in liquid to the cavity. In the treatment process, the catheter assembly is firstly inserted into the urethra of a patient, and after the catheter assembly is positioned, liquid is introduced into the cavity to expand the latex sleeve, so that the prostate layer is extruded, the urethra is unobstructed, and the treatment purpose is achieved. The catheter, the latex cannula and the catheter assembly will be described separately with reference to the drawings, and the treatment principle thereof will be described in detail.

Fig. 1 shows a prostate dilation catheter according to an embodiment of the present invention. As shown in fig. 1, the prostate dilatation catheter 10 includes a catheter adapter 11, a longitudinal extension 12 and a catheter head 13, the longitudinal extension 12 and the catheter head 13 being integrally formed, i.e. they are integrally formed, from the same material, by the same machining process, the catheter adapter 11 being arranged at the end of the longitudinal extension 12 remote from the catheter head 13. The catheter 10 may be integrally extruded from PVC plastic. The conduit 10 further includes a first communicating pipe 14, a second communicating pipe 15, a third communicating pipe 16 and a fourth communicating pipe 24, wherein a first liquid outlet 17, a second liquid outlet 18, a third liquid outlet 19 and a fourth liquid outlet 25 are disposed on a wall surface of the longitudinal extending portion 12, at least a portion of each of the first communicating pipe 14, the second communicating pipe 15, the third communicating pipe 16 and the fourth communicating pipe 24 is located inside the longitudinal extending portion 12, one end of each of the first communicating pipe 14, the second communicating pipe 15, the third communicating pipe 16 and the fourth communicating pipe 24 is respectively communicated with the first liquid outlet 17, the second liquid outlet 18, the third liquid outlet 19 and the fourth liquid outlet 25, and the other end of each of the first communicating pipe 14, the second communicating pipe 15, the third communicating pipe 16 and the fourth communicating pipe 24 respectively penetrates through the wall surface of the longitudinal extending portion 12 and extends to the outside of the longitudinal extending portion 12. It should be noted that the first communication pipe 14, the second communication pipe 15, the third communication pipe 16, and the fourth communication pipe 24 may extend from an opening port 23, which will be described later, toward the rear end instead of penetrating through the wall surface of the longitudinal extension portion 12. The first, second, third and fourth communication tubes 14, 15, 16, 24 may be constructed as pvc plastic tubes with an outer diameter of 2 mm and an inner diameter of 1 mm, the outer end of each communication tube being connected to a control valve on the output tube of the medical fluid flow pump, which is not shown in the figures because the control valve belongs to a fluid flow pump instrument system.

Preferably, the at least a portion of the first communication pipe 14, the second communication pipe 15, the third communication pipe 16, and the fourth communication pipe 24 is embedded in the wall surface of the longitudinal extension portion 12, so that the first communication pipe 14, the second communication pipe 15, the third communication pipe 16, and the fourth communication pipe 24 can be directly fixed by the wall surface of the longitudinal extension portion 12 without an additional fixing means, and the first communication pipe 14, the second communication pipe 15, the third communication pipe 16, and the fourth communication pipe 24 can be isolated from the hollow interior of the catheter, avoiding contamination by urine and the like in the hollow interior. In addition, the first communication pipe 14, the second communication pipe 15, the third communication pipe 16, and the fourth communication pipe 24 extend in parallel with each other, and are not twisted together.

In the embodiment of fig. 1, the longitudinally extending portion 12, the tube head 13, the first communication tube 14, the second communication tube 15, the third communication tube 16, and the fourth communication tube 24 constitute an integral structure, but alternatively, they may be separately manufactured and then assembled together. Clearly, the integral construction has particular advantages in that it saves machining and assembly steps and is more reliable.

As shown in fig. 1, the longitudinal positions of the first liquid outlet 17, the second liquid outlet 18, the third liquid outlet 19, and the fourth liquid outlet 25 on the wall surface of the longitudinal extension portion 12 are different two by two, and the circumferential positions of the first liquid outlet 17, the second liquid outlet 18, the third liquid outlet 19, and the fourth liquid outlet 25 on the wall surface of the longitudinal extension portion 12 are different two by two. In one example, the first liquid outlet 17, the second liquid outlet 18, the third liquid outlet 19 and the fourth liquid outlet 25 are uniformly distributed on the wall surface of the longitudinal extension portion 12 along the circumference of the longitudinal extension portion 12, that is, the circumferential angle of the first liquid outlet 17 and the second liquid outlet 18 on the wall surface of the longitudinal extension portion 12 is 90 degrees, the circumferential angle of the second liquid outlet 18 and the third liquid outlet 19 on the wall surface of the longitudinal extension portion is 90 degrees, the circumferential angle of the third liquid outlet 19 and the fourth liquid outlet 25 on the wall surface of the longitudinal extension portion is 90 degrees, and the circumferential angle of the fourth liquid outlet 25 and the first liquid outlet 17 on the wall surface of the longitudinal extension portion is 90 degrees. In the embodiment of fig. 1, the first liquid outlet 17 and the third liquid outlet 19 are located on the same side of the longitudinal extension 12, and the second liquid outlet 18 and the fourth liquid outlet 25 are located on the same side of the longitudinal extension 12 and opposite to the side where the first liquid outlet 17 and the third liquid outlet 19 are located. The first outlet port 17 is spaced from the second outlet port 18 by 3 to 10 cm in the longitudinal direction of the longitudinal extension 12, the second outlet port 18 is spaced from the third outlet port 19 by 8 to 20 cm in the longitudinal direction of the longitudinal extension 12, and the first outlet port 17 is spaced from the fourth outlet port 25 by 3 to 10 cm in the longitudinal direction of the longitudinal extension.

In order to drain urine in the bladder or supply medical fluid into the body, the catheter 10 is designed to: the interior of the longitudinal extension 12 is hollow, one end of the longitudinal extension 12 remote from the conduit head 13 has an open port 23, the conduit 10 further comprises at least one fifth liquid outlet 20, the fifth liquid outlet 20 is disposed on the conduit head 13, and the conduit head 13 comprises a hollow 21 in the center of the conduit head 13, such that the fifth liquid outlet 20 communicates with the open port 23 through the hollow 21. Therefore, when the catheter assembly of the present invention is used, the urine accumulated in the bladder and unable to be discharged can be discharged through the fifth liquid outlet 20.

Advantageously, said at least one fifth liquid outlet 20 comprises a liquid outlet provided on the tip of the conduit head 13 and a liquid outlet provided on the side wall of the conduit head 13. The catheter head 13 has a stepped outer contour and the end of the catheter head 13 remote from the longitudinal extension 12 has an arcuate contour, which facilitates insertion of the catheter.

In order to prevent the curved guide portion of the front end of the catheter from entering into the bladder after penetrating into the urethra, the central axis of the catheter head 13 of the front end is inclined relative to the central axis of the longitudinal extension 12, specifically, the included angle between the central axis of the catheter head 13 and the central axis of the longitudinal extension 12 is 10-20 degrees, and preferably, the included angle between the central axis of the catheter head 13 and the central axis of the longitudinal extension 12 is 15 degrees.

In one example, the wall of the longitudinal extension 12 is provided with an outwardly projecting annular flange 22. The annular flange can be used for positioning the joint point of the catheter and the latex casing pipe, and the annular flange can enhance the joint force of the latex casing pipe and the catheter, and the joint area of the latex casing pipe and the catheter is increased, so that the sealing between the catheter and the latex casing pipe is ensured, and the reliability is improved. Specifically, four sections of annular flanges 22 are provided on the wall surface of the longitudinal extension 12, the four sections of annular flanges 22 are provided at different longitudinal positions on the wall surface of the longitudinal extension 12, the first liquid outlet 17 is located between the first annular flange and the second annular flange, the second liquid outlet 18 is located between the second annular flange and the third annular flange, and the third liquid outlet 19 is located between the third annular flange and the fourth annular flange.

In order to increase the strength of the catheter and to prevent the catheter from breaking under the external force after insertion into the urethra or under the pressure of the inner and outer balloons, a plurality of reinforcing ribs are provided on the inner surface of the wall surface of the longitudinal extension 12 between the first and third annular flanges, said reinforcing ribs being distributed circumferentially along the inner surface of the wall surface of the longitudinal extension 12 or, alternatively, longitudinally along the inner surface of the wall surface of the longitudinal extension 12.

A marking line is provided on a wall surface of the longitudinally extending portion 12 at an end remote from the catheter head 13, the marking line being opposed to the inclined catheter head 13 to mark the direction of inclination of the catheter head 13. By marking the line, the operator can know in which direction the catheter head 13 is deflected, facilitating insertion and removal of the catheter.

Fig. 2 to 3 show a latex sleeve according to an embodiment of the present invention, in which the latex sleeve is sleeved on a catheter, which is configured to have four balloon sections, and the latex sleeve 30 includes a grip section 31, a first coupling section 32, a second auxiliary outer balloon section 42, a second coupling section 39, an outer balloon section 33, a third coupling section 40, a first auxiliary outer balloon section 34, a fourth coupling section 41, and a sleeve head 35, in a backward-forward direction. The gripping section 31, the outer bladder section 33, the first auxiliary outer bladder section 34, the cannula head 35, the first coupling section 32, the second coupling section 39, the third coupling section 40 and the fourth coupling section 41 constitute an integral structure. The first auxiliary outer bladder section 34 is arranged between the outer bladder section 33 and the casing head 35, the second auxiliary outer bladder section 42 is arranged between the holding section 31 and the outer bladder section 33, the outer bladder section 33 is arranged between the first auxiliary outer bladder section 34 and the second auxiliary outer bladder section 42, wherein the latex casing 30 further comprises an inner bladder section 36, the inner bladder section 36 is arranged inside the outer bladder section 33, and the length of the inner bladder section 36 is smaller than the length of the outer bladder section 33. The inner bladder section 36, the outer bladder section 33, the first auxiliary outer bladder section 34, and the second auxiliary outer bladder section 42 are adapted to be expanded outwardly by the pressure of the fluid, thereby compressing the treatment site. The inner balloon section 36, the outer balloon section 33, the first auxiliary outer balloon section 34, the second auxiliary outer balloon section 42 are capable of expanding as long as they need to be bonded with the wall surface of the catheter 10 to form a relatively closed cavity (with respect to which reference will be made later), and therefore, the latex cannula 30 further includes a first bonding section 32, a second bonding section 39, a third bonding section 40 and a fourth bonding section 41 for bonding with the prostate-expanding catheter 10, wherein the first bonding section 32 is disposed between the grip section 31 and the second auxiliary outer balloon section 42, the second bonding section 39 is disposed between the second auxiliary outer balloon section 42 and the outer balloon section 33, the third bonding section 40 is disposed between the outer balloon section 33 and the first auxiliary outer balloon section 34, and the fourth bonding section 41 is disposed between the first auxiliary outer balloon section 34 and the cannula head 35. With respect to the bonding of the inner balloon section 36 to the wall of the catheter 10, additional bonding sections may be employed, for example, additional bonding sections may be provided at both ends of the inner balloon section 36, with the additional bonding sections bonding the inner balloon section 36 to the wall of the catheter, thereby forming a relatively closed cavity between the inner balloon section 36 and the catheter 10. The latex sleeve employs a white latex material, which has good elasticity, in consideration of the expandability of the sleeve.

It should be noted that, since the inner balloon section 36 is disposed inside the outer balloon section 33 and is shorter than the outer balloon section 33, in order not to affect the combination of the outer balloon section 33 and the catheter, i.e., the combination of the second combination section 39 and the third combination section 40, the outer balloon section 33 seems to surround the inner balloon section 36 and the additional combination sections at both ends of the inner balloon section 36, and both the outer balloon section 33 and the inner balloon section 36 are combined with the catheter to form a closed space, and the space between the inner balloon section 36 and the catheter 10 and the space between the outer balloon section 33 and the inner balloon section 36 are working chambers. Fig. 4 shows additional bonded segments at both ends of the inner bladder segment 36.

The first liquid outlet 17 of the conduit 10 corresponds to the inner bag section 36, the second liquid outlet 18 corresponds to the part of the outer bag section 33 except for the inner bag section 36, the third liquid outlet 19 corresponds to the first auxiliary outer bag section 34, and the fourth liquid outlet 25 corresponds to the second auxiliary outer bag section 42, i.e., liquid can enter the inner bag section 36, the outer bag section 33, the first auxiliary outer bag section 34, and the second auxiliary outer bag section 42 through the first communicating pipe 14, the second communicating pipe 15, the third communicating pipe 16, and the fourth communicating pipe 24, and then through the first liquid outlet 17, the second liquid outlet 18, the third liquid outlet 19, and the fourth liquid outlet 25, see fig. 6.

It is noted that the first and second auxiliary outer bladder sections 34 and 42 function as positioning elements, as will be described. The reason why the prostate is pressed by one of the outer balloon section 33 and the inner balloon section 36 is that the outer balloon section 33 is long, and if the outer balloon section 33 is separately arranged, the deformation of the outer balloon section 33 is not easy to control, and the inner balloon section 36 can restrict and restrict the deformation of the outer balloon section 33, so that the expanded outer contour is more cylindrical, and the prostate tissue can be extruded conveniently. The length of the inner bladder section 36 is about 1/3 the length of the outer bladder section 33. In actual use, the inner bag section 36 or the outer bag section 33 can be inflated independently by controlling the first communication pipe 14 and the second communication pipe 15. When the device is used for local treatment, the inner balloon section 36 can be inflated independently, when the treatment range is larger, the outer balloon section 33 can be inflated independently, and the inner balloon section 36 and the outer balloon section 33 can be inflated simultaneously.

The latex cannula 30 further includes at least one opening 37, the opening 37 being disposed on the cannula head 35, the at least one opening 37 including an opening 37 disposed on a tip of the cannula head 35 and an opening 37 disposed on a sidewall of the cannula head 35. The opening 37 in the cannula head 35 is located opposite the fifth outlet port 20 in the catheter head 13.

Advantageously, a plurality of arc-like projections 38 are provided on the outer surface of the outer bladder section 33, see fig. 6. The design is mainly applied to positioning, extruding and hemostasis when bleeding or inflammation occurs on the local part of the inner wall of the urethra.

An interlining is disposed between the first coupling section 32 and the fourth coupling section 41 on the inner surface of the latex sleeve 30, and an interlining is disposed between the inner bag section 36 and the outer bag section 33. The lining cloth is used for restraining and containing the three bag sections and preventing the three bag sections from expanding and bursting. The lining cloth is provided with preset folds, the lining cloth retracts along the folds in the contraction state of the bag section, and the folds of the lining cloth are unfolded to adapt to the shape of the bag section when the bag section is pressed and expanded.

The latex casing pipe utilizes the principle that the thickness and the thickness of the rubber layer of each part on the whole colloid casing pipe are different and the expansion coefficient is also different, so that a plurality of front and back outer capsules are formed by the whole casing pipe very simply and conveniently, the difficulty of simultaneously assembling a plurality of capsules on one catheter is solved, and the treatment scheme is realized. Specifically, the wall thickness of the inner bladder section 36, the outer bladder section 33, the first auxiliary outer bladder section 34, and the second auxiliary outer bladder section 42 is smaller than the wall thickness of any one of the first bonding section 32, the second bonding section 39, the third bonding section 40, and the fourth bonding section 41. The inner bladder section 36, the outer bladder section 33, the first auxiliary outer bladder section 34, and the second auxiliary outer bladder section 42 may have the same wall thickness, the first bonding section 32, the second bonding section 39, the third bonding section 40, and the fourth bonding section 41 may have the same wall thickness, and the wall thickness of the first bonding section 32, the second bonding section 39, the third bonding section 40, and the fourth bonding section 41 may be equal to the wall thickness of the grip section 31. Optionally, the wall thickness of the inner bladder section 36 is less than the wall thickness of the outer bladder section 33.

It is particularly preferred that the wall thickness of the outer bladder section 33 varies along the longitudinal length such that the wall thickness of the outer bladder section 33 undergoes at least a decrease, an increase, a decrease, an increase change along the longitudinal length. Fig. 5 shows a specific example of an outer bladder section 33, wherein the outer bladder section 33 has two thicknesses, and the two thicknesses are alternately arranged. The purpose of this is: if the outer balloon section 33 has a uniform thickness, it forms a contour similar to a sphere when it is inflated under pressure, and when the outer balloon section 33 has a thickness as shown in fig. 5, it forms a contour more similar to a cylinder when it is inflated, the pressure of the cylindrical outer contour surface to the prostate tissue is a surface pressure, and the pressure of the spherical outer contour surface to the prostate tissue is a point pressure, obviously such a design makes the pressure more uniform, and thus the treatment effect is better.

Similarly, the inner bladder section 36 may be identically configured, and the first and second auxiliary outer bladder sections 34, 42 need not be configured because the primary function of the first and second auxiliary outer bladder sections 34, 42 is to position the catheter assembly such that the spherical outer profile is more readily positioned when inflated.

Advantageously, from the cannula head 35 to the end of the gripping section 31, graduation marks are provided on the outer surface of the latex cannula 30 for marking the depth of insertion of the latex cannula 30.

The cannula head 35 has a stepped outer contour and the end of the cannula head 35 remote from the gripping section 31 has an arcuate contour such that the shape of the cannula head 35 matches the shape of the catheter head 13. The central axis of the cannula head 35 is inclined with respect to the central axis of the holding section 31, specifically, the included angle between the central axis of the cannula head 35 and the central axis of the holding section 31 is 10 to 20 degrees, and preferably, the included angle between the central axis of the cannula head 35 and the central axis of the holding section 31 is 15 degrees.

The first, second, third and fourth coupling sections 32, 39, 40 and 41 correspond one-to-one to the first, second, third and fourth annular flanges.

In the same manner as the design of the marker line on the catheter 10, the holding section 31 may be provided with a marker line which faces the inclined cannula head 35 and which, when the latex cannula 30 is assembled to the catheter 10, faces the inclined catheter head 13 to mark the inclination direction of the cannula head 35. To facilitate the operator to know the position of the liquid outlet, a marking pattern is provided on each of the outer bladder section 33, the first auxiliary outer bladder section 34 and the second auxiliary outer bladder section 42 for marking the position of the liquid outlet on the catheter 10. Specifically, two marking patterns are provided on the outer bag section 33 for marking the positions of the first liquid outlet 17 and the second liquid outlet 18, respectively, one marking pattern is provided on the first auxiliary outer bag section 34 for marking the position of the third liquid outlet 19, and one marking pattern is provided on the second auxiliary outer bag section 42 for marking the position of the fourth liquid outlet 25. The marking patterns on the outer bladder section 33, the first auxiliary outer bladder section 34, and the second auxiliary outer bladder section 42 are different two by two in the longitudinal position on the latex sleeve 30, and the marking patterns on the outer bladder section 33, the first auxiliary outer bladder section 34, and the second auxiliary outer bladder section 42 are different two by two in the circumferential position on the outer surface of the latex sleeve 30. The marking patterns on the outer bladder section 33, the first auxiliary outer bladder section 34 and the second auxiliary outer bladder section 42 are evenly distributed along the circumference of the latex sleeve 30 on the outer surface of the latex sleeve 30, i.e., the circumferential angle of two marking patterns on the outer surface of the latex sleeve 30 is 90 degrees.

Fig. 6-8 are schematic illustrations of a five-lumen, four-balloon prostate dilation catheter assembly according to an embodiment of the present invention. It should be noted that the catheter assembly is a combination of a catheter and a latex cannula, and for the sake of simplifying the drawing, the catheter and the latex cannula are not shown in the drawing because they are closely combined in practice, and the white area in fig. 6 is understood as the catheter, and the hatched area is understood as the cross section of the latex cannula.

As shown in the figures, the five-chamber four-cell prostate expansion catheter assembly 100 includes a catheter 10 and a latex casing 30, the catheter 10 includes a first communicating tube 14, a second communicating tube 15, a third communicating tube 16 and a fourth communicating tube 24, and a first liquid outlet 17, a second liquid outlet 18, a third liquid outlet 19 and a fourth liquid outlet 25 are arranged on a wall surface of the catheter 10, one end of each of the first communicating tube 14, the second communicating tube 15, the third communicating tube 16 and the fourth communicating tube 24 is respectively communicated with the first liquid outlet 17, the second liquid outlet 18, the third liquid outlet 19 and the fourth liquid outlet 25, wherein the latex casing 30 is combined with the catheter 10, so that an outer chamber 51, an inner chamber 52, a first auxiliary chamber 53 and a second auxiliary chamber 57 which are isolated from each other are formed between the latex casing 30 and the catheter 10, the outer chamber 51 surrounds the inner chamber 52, the outer chamber 51, the first auxiliary chamber 53 and the second auxiliary chamber 57 are respectively communicated with the first liquid outlet, The second outlet port 18, the third outlet port 19 and the fourth outlet port 25 are communicated. The five cavities of the five-cavity four-bag prostate expansion catheter component of the utility model are the outer cavity, the inner cavity, the first auxiliary cavity, the second auxiliary cavity and the cavity formed inside the catheter head.

The latex sleeve 30 is joined to the catheter 10 to form a first junction 54, a second junction 55, a third junction 56, and a fourth junction 58, the outer lumen 51 and the inner lumen 52 being between the second junction 55 and the third junction 56, the first auxiliary lumen 53 being between the third junction 56 and the fourth junction 58, and the second auxiliary lumen 57 being between the first junction 54 and the second junction 55. That is, the first annular flange of the catheter 10 is joined to the first bonded section 32 of the latex sleeve 30 to form a first joint 54, the second annular flange of the catheter 10 is joined to the second bonded section 39 of the latex sleeve 30 to form a second joint 55, the third annular flange of the catheter 10 is joined to the third bonded section 40 of the latex sleeve 30 to form a third joint 56, and the fourth annular flange of the catheter 10 is joined to the fourth bonded section 41 of the latex sleeve 30 to form a fourth joint 58.

The first connecting joint 54, the second connecting joint 55, the third connecting joint 56 and the fourth connecting joint 58 are respectively composed of lining cloth and adhesive, and the lining cloth and the adhesive are combined to facilitate the combination of the fastening performance and the sealing performance.

As previously mentioned, the portions of the latex cannula 30 that are used to form the outer lumen 51, the inner lumen 52, the first auxiliary lumen 53 and the second auxiliary lumen 57 have a thinner wall thickness than the other portions of the latex cannula 30.

As an alternative to the embodiment of fig. 6, the first communication pipe 14, the second communication pipe 15, the third communication pipe 16, and the fourth communication pipe 24 may not protrude from the wall surface of the longitudinal extension 12, i.e., they extend to the rear end and protrude from the open port 23.

The interior of the duct assembly 100 is hollow, one end of the duct assembly 100 has an opening port 23, the other end has an insertion head, a communication port is provided on the insertion head, and the opening port 23 communicates with the communication port. The insertion heads correspond to the catheter head 13 of the catheter 10 and the cannula head 35 of the latex cannula 30 as a combined product of the two. Accordingly, the communication ports thereon correspond to the fifth liquid outlet 20 and the opening 37.

The central axis of the insertion head is inclined with respect to the central axis of the main body of the catheter assembly 100, in particular, the angle between the central axis of the insertion head and the central axis of the main body of the catheter assembly 100 is 10-20 degrees, and preferably, the angle between the central axis of the insertion head and the central axis of the main body of the catheter assembly 100 is 15 degrees. The catheter assembly 100 further comprises a catheter adapter 11, the catheter adapter 11 being arranged at an end of the catheter assembly 100 remote from the insertion head.

The operation of the five-lumen four-balloon prostate dilation catheter assembly 100 is described below.

The prostate dilation catheter assembly 100 is formed by combining a catheter 10 and a latex cannula 30, and the combination of the two forms an outer cavity 51, an inner cavity 52, a first auxiliary cavity 53 and a second auxiliary cavity 57 which are isolated from each other, and the working principle is as follows:

first, the catheter assembly 100 is pushed into the bladder through the urethral orifice to push the slightly curved semicircular insertion head, so that the urine which cannot be discharged from the bladder is accumulated, and the urine is discharged from the opening port 23 to the outside of the body along the hollow part 21 connected with the opening 37 at the center of the front semicircular head and the fifth liquid outlet 20, thereby relieving the urine pressure of the bladder of the patient. Then liquid flow with certain standard pressure is injected through other first communicating pipes 14, second communicating pipes 15, third communicating pipes 16 and fourth communicating pipes 24, a liquid flow with a certain pressure is fed into the inner cavity 52, the outer cavity 51, the first auxiliary cavity 53 and the second auxiliary cavity 57 through the corresponding first liquid outlet 17, the second liquid outlet 18, the third liquid outlet 19 and the fourth liquid outlet 25, thus, under the action of the hydraulic pressure, the cavities respectively expand to different degrees, at the moment, the urethra is gradually transformed into an outward expansion state from the original state of contraction caused by the enlargement and compression of the prostate, the process leads the loosened prostate layer, under the action of a certain external pressure formed by the expansion of the inner cavity 52 and the outer cavity 51, the urethra is slowly restored to the original fine tissue state, and the urethra is simultaneously removed from being pressed by the prostate, so that the urethra is restored to the original smooth state. The whole process is a simple physical process, and does not need any medicine or other auxiliary measures. It is thus clear to adopt the utility model discloses a five chamber four bag prostate expansion catheter subassembly, the treatment principle is very simple, and treatment instrument is also uncomplicated, and medical personnel's clinical operation is also very convenient, and to the patient painlessly, two need not to pay high surgical costs, three need not the long time process that the operation of being in hospital and rehabilitation required, medical personnel's outpatient service operation only needs 1-2 hours can be discharged hospital.

Brief description of the operational procedure and method of operation:

1) before the catheter component penetrates into the urethral orifice, a layer of lubricant is coated on the outer surface of the insertion head part with the curved semicircular shape, so that pain caused by friction between the inner wall of the urethra and the catheter component is prevented;

2) after the catheter assembly penetrates into the urethra and the inserting head with the front end bent into a semicircular shape completely enters the bladder, the control switch at the outer end of the opening port is opened so as to facilitate the urination outside the body and control the entering depth of the catheter assembly;

3) after the urine is discharged, injecting a pressure liquid flow for calibrating into the inner cavity, the outer cavity, the first auxiliary cavity and the second auxiliary cavity, and sequentially carrying out according to a specified program, firstly injecting a pressure liquid flow with a standard dosage into the first auxiliary cavity 53 arranged near the top end, closing a control valve at an input port of the third communicating pipe 16, expanding the first auxiliary cavity under the action of the pressure liquid flow for calibrating, and then drawing the catheter assembly outwards until the expanded first auxiliary cavity is clamped at the joint of the bladder and the urethra, and at the moment, the whole catheter assembly is in the optimal position to complete positioning;

4) in order to prevent the catheter assembly from being displaced in the inner and outer directions at any time to influence the treatment effect after the catheter assembly is accurately positioned, after the catheter assembly is positioned in the bladder in a one-way mode, liquid flow with the same pressure is injected into the second auxiliary cavity through the fourth communicating pipe to expand the second auxiliary cavity, the second auxiliary cavity is positioned outside the urethral orifice and outside the glans penis end, and the corresponding control valve is closed after the second auxiliary cavity is expanded to prevent the catheter assembly from moving inwards. The first auxiliary cavity is positioned in the bladder, the catheter component cannot move outwards but can move inwards, so that the catheter component is positioned for the second time in the opposite direction after the second auxiliary cavity is pressed and expanded, and at the moment, under the positioning action of the two auxiliary cavities at the two ends, the catheter component cannot slide outwards and cannot slide inwards, so that the inner cavity and the outer cavity are ensured to be positioned at the optimal positions in the whole treatment process;

5) finally, calibrated pressure liquid flows with different standard dosages are respectively injected into the inner cavity and the outer cavity through the first communicating pipe 14 and the second communicating pipe 15, relevant control valves are closed, and the pressure is stabilized for one standard treatment period;

6) after one treatment course is finished, all the control valves are released, pressure liquid flow in each cavity is discharged, the catheter assembly is drawn out, the whole treatment course is completely finished, generally, the patient can be completely recovered without three treatment courses, and the whole course only needs outpatient operation without hospitalization.

The utility model discloses a bladder inner chamber location and the supplementary chamber's of second reverse orientation technique of first supplementary chamber of front end latex elasticity, utilized interior, the exocoel forms the extruded treatment technical principle of prostate tissue implementation around the urethra after the inflation simultaneously under the liquid stream effect of demarcation pressure, penetrate four communicating pipes in the pipe main part and pour into the liquid stream messenger of demarcation pressure respectively, outer four chambeies successively expand in order to realize medical effect, the latex sleeve pipe utilizes the thickness of the gum layer of each position on its whole colloid sleeve pipe, the thin difference and the also different principle of expansion coefficient, a plurality of outer sacs around the very simple and convenient formation of a holistic sleeve pipe, the difficulty of assembling many sacs simultaneously on a pipe has been solved, cause this treatment scheme to realize. In order to prevent the arc-shaped guide part at the front end of the catheter from entering into a branch road by mistake after penetrating into the urethra and before entering into the bladder, the design that the central axis of the guide head at the front end and the central axis of the catheter main body form a 15-degree bending included angle is specially designed; the outer surface of the latex sleeve is provided with a row of arc-shaped bulges with the width of 10mm and the height of 5mm, and the design is mainly applied to positioning, extruding and hemostasis when bleeding or inflammation occurs on the local part of the inner wall of the urethra; in addition, if inflammation occurs in the inner cavity of the bladder or the inner wall of the urethra, the treatment can be performed by injecting normal saline into the hollow part of the head part of the catheter to flush or injecting related anti-inflammatory drugs.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.

List of reference numerals:

100 catheter assembly

10 catheter

11 pipe joint

12 longitudinal extension

13 catheter head

14 first communicating pipe

15 second communicating pipe

16 third communicating pipe

17 first liquid outlet

18 second liquid outlet

19 third liquid outlet

20 fifth liquid outlet

21 hollow part

22 annular flange

23 open port

24 fourth communicating pipe

25 fourth liquid outlet

30 emulsion casing

31 grip segment

32 first joining section

33 outer bladder segment

34 first auxiliary outer bladder section

35 casing head

36 inner bag section

37 opening

38 arc-shaped protrusion

39 second joining section

40 third joining section

41 fourth joining section

42 second auxiliary outer bladder section

51 outer cavity

52 inner cavity

53 first auxiliary chamber

54 first connection

55 second connecting knot

56 third connecting knot

57 second auxiliary chamber

58 fourth connecting node.

Claims (10)

1. A prostate dilation catheter (10) comprising an integral longitudinal extension (12) and catheter head (13), characterized in that: the conduit (10) also comprises a first communicating pipe (14), a second communicating pipe (15), a third communicating pipe (16) and a fourth communicating pipe (24),

wherein, a first liquid outlet (17), a second liquid outlet (18), a third liquid outlet (19) and a fourth liquid outlet (25) are arranged on the wall surface of the longitudinal extension part (12),

wherein, first communicating pipe (14), second communicating pipe (15), respective at least some of third communicating pipe (16) and fourth communicating pipe (24) are located inside longitudinal extension portion (12), first communicating pipe (14), second communicating pipe (15), respective one end of third communicating pipe (16) and fourth communicating pipe (24) respectively with first liquid outlet (17), second liquid outlet (18), third liquid outlet (19) and fourth liquid outlet (25) intercommunication, and first communicating pipe (14), second communicating pipe (15), respective other end of third communicating pipe (16) and fourth communicating pipe (24) wear out the wall of longitudinal extension portion (12) respectively and extend to the outside of longitudinal extension portion (12).

2. The prostate dilation catheter (10) of claim 1, wherein:

the longitudinal extension part (12), the conduit head part (13), the first communicating pipe (14), the second communicating pipe (15), the third communicating pipe (16) and the fourth communicating pipe (24) form an integral structure.

3. The prostate dilation catheter (10) of claim 2, wherein:

the at least a part of the first communication pipe (14), the second communication pipe (15), the third communication pipe (16), and the fourth communication pipe (24) is embedded in a wall surface of the longitudinal extension portion (12).

4. The prostate dilation catheter (10) of claim 3, wherein:

the longitudinal positions of the first liquid outlet (17), the second liquid outlet (18), the third liquid outlet (19) and the fourth liquid outlet (25) on the wall surface of the longitudinal extension portion (12) are different pairwise, and the circumferential positions of the first liquid outlet (17), the second liquid outlet (18), the third liquid outlet (19) and the fourth liquid outlet (25) on the wall surface of the longitudinal extension portion (12) are different pairwise.

5. The prostate dilation catheter (10) of claim 4, wherein:

the interior of the longitudinal extension (12) is hollow, one end of the longitudinal extension (12) away from the conduit head (13) is provided with an open port (23), the conduit (10) further comprises at least one fifth liquid outlet (20), the fifth liquid outlet (20) is arranged on the conduit head (13), and the conduit head (13) comprises a hollow portion (21) in the center of the conduit head (13), so that the fifth liquid outlet (20) is communicated with the open port (23) through the hollow portion (21).

6. The prostate dilation catheter (10) of claim 5, wherein:

the at least one fifth liquid outlet (20) comprises a liquid outlet arranged on the tip of the conduit head (13) and a liquid outlet arranged on the side wall of the conduit head (13).

7. The prostate dilation catheter (10) of claim 6, wherein:

the central axis of the catheter head (13) is inclined with respect to the central axis of the longitudinal extension (12).

8. The prostate dilation catheter (10) of claim 7, wherein:

the included angle between the central axis of the conduit head part (13) and the central axis of the longitudinal extension part (12) is 10-20 degrees.

9. The prostate dilation catheter (10) of claim 8, wherein:

the wall surface of the longitudinal extension (12) is provided with an annular flange (22) protruding outwards.

10. The prostate dilation catheter (10) according to any one of claims 1-9, wherein:

the catheter (10) further comprises a catheter adapter (11), the catheter adapter (11) being arranged at an end of the longitudinal extension (12) remote from the catheter head (13).

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