A urinary catheter used after prostate hyperplasia surgery

Abstract

This invention relates to a urinary catheter for post-prostatectomy, comprising an outer sheath, a catheter disposed inside the outer sheath, and an expansion component disposed on the surface of the outer sheath. Compared with the prior art, this invention, through the protruding structure on the surface of the balloon, allows the doctor to achieve hemostasis on the wound after prostatectomy via the balloon. The protruding structure can closely fit the uneven interior of the wound after surgery, resulting in better hemostasis compared to the smooth balloon surface in the prior art. At the same time, since the interior of the protrusion is connected to the interior of the balloon, the expansion size of the protrusion during the balloon inflation phase can be affected by the unevenness of the wound surface, avoiding excessive pressure on the post-operative wound area. In addition, the design of multiple sub-protrusions can increase the contact area after the balloon is filled with water or air, resulting in better compression hemostasis.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a urinary catheter for postoperative use after benign prostatic hyperplasia surgery. Background Technology

[0002] Prostatectomy is a common procedure for treating benign prostatic hyperplasia (BPH), and mainly includes transurethral resection of the prostate (TURP), holmium laser enucleation of the prostate (HLA-PE), and laser vaporization. Post-operatively, a catheter is placed transurethral to the bladder and prostate surgical site. Its core function is to inflate the balloon at the catheter tip with water, allowing the balloon's outer wall to adhere tightly to the surgical wound, thereby compressing and stopping bleeding from the blood vessels in the wound, while simultaneously isolating bladder urine from contact with the wound to prevent secondary bleeding.

[0003] However, the surgical wound from prostate surgery, after electrocautery or laser treatment, exhibits a complex morphology with irregular depressions and protruding tissue stumps. Traditional ureteral balloons, with their uniformly smooth surface, can only achieve planar contact through overall deformation upon inflation. This mechanical characteristic results in insufficient effective contact area between the balloon and the uneven wound surface, leading to a phenomenon of both localized pressure concentration and overall pressure attenuation. This causes decreased hemostatic efficacy and isolation failure, resulting in complications such as postoperative bleeding and blood clots obstructing the ureter in some patients. Increasing balloon pressure to compensate for hemostasis significantly increases the risk of ischemic damage to the urethral mucosa. Furthermore, the smooth balloon surface is prone to displacement and slippage during bladder contraction, further weakening postoperative wound protection. Utility Model Content

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] A urinary catheter for use after prostatectomy includes:

[0006] Outer tube;

[0007] A urinary catheter is located inside an outer sheath, the surface of which has an opening that allows the urinary catheter to communicate with the outside of the outer sheath;

[0008] An expansion assembly includes an air bladder and a branch tube disposed on the surface of an outer tube, and a connecting channel disposed inside the outer tube to connect the air bladder and the branch tube. The surface of the air bladder is uniformly provided with a plurality of protrusions for conforming to the wound surface after prostate surgery.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the protrusions on the surface of the airbag are composed of several vertically stacked sub-protrusions.

[0011] Furthermore, the volume of the sub-protrusions on the surface of the airbag decreases sequentially from bottom to top.

[0012] Furthermore, the sub-protrusion has a circular structure when viewed from above.

[0013] Furthermore, the central axes of all the sub-protrusions in each of the protrusions coincide.

[0014] Furthermore, the protrusion has an overall frustum-shaped structure.

[0015] Furthermore, the protrusion has a chamber communicating with the inside of the airbag. When the airbag is inflated or filled with water, the protrusion will gradually expand as the filling medium inside the airbag increases.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model, through the protruding structure on the surface of the balloon, allows the doctor to achieve hemostasis after prostate hyperplasia surgery by using the balloon. The protruding structure can closely fit the uneven wound surface after surgery, resulting in better hemostasis compared with the smooth balloon surface in the prior art. At the same time, since the inside of the protrusion is connected to the inside of the balloon, the expansion size of the protrusion can be affected by the unevenness of the wound surface during the balloon inflation phase. This avoids excessive pressure on the postoperative wound area. In addition, the design of multiple protrusions can increase the contact area after the balloon is filled with water or air, resulting in better compression hemostasis. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the orthographic section of the utility model.

[0021] Figure 3 This is a top view of one embodiment of the utility model.

[0022] Figure 4 For utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Outer tube; 2. Urinary catheter; 3. Inflation assembly; 31. Balloon; 32. Branch tube; 33. Protrusion. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the technical product is in use. They are only for the convenience of describing the technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the technology.

[0029] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] Please see Figure 1-4 A urinary catheter for use after prostatectomy includes an outer tube 1, a urinary catheter 2 disposed inside the outer tube 1, and an expansion component 3 disposed on the surface of the outer tube 1.

[0031] Among them, the urinary catheter 2 is a common structure in existing Flexi urinary catheters. It is located inside the outer tube 1. The surface of the outer tube 1 is provided with an opening that allows the urinary catheter 2 to communicate with the outside of the outer tube 1, as shown in the figure. The end of the outer tube 1 is also provided with an arc-shaped structure, and the two sides of its end are provided with opening structures for urine to enter the urinary catheter.

[0032] The expansion assembly 3 includes an airbag 31 and a branch tube 32 disposed on the surface of the outer sleeve 1, and a connecting channel disposed inside the outer sleeve 1 that connects the airbag 31 and the branch tube 32. The surface of the airbag 31 is uniformly provided with a plurality of protrusions 33 for conforming to the wound surface after prostate surgery.

[0033] In some embodiments, the protrusions 33 on the surface of the airbag 31 are composed of several vertically stacked sub-protrusions 33. At the same time, the volume of the sub-protrusions 33 on the surface of the airbag 31 decreases from bottom to top, thereby ensuring that the protrusions 33 have a certain elastic contraction ability and can also appropriately increase their friction.

[0034] Considering that the protrusions 33 with sharp edges could cause some damage to the wound, the sub-protrusions 33 have a circular structure when viewed from above, and the central axes of all the sub-protrusions 33 in each of the protrusions 33 coincide, so as to contact the wound in a gentler way.

[0035] In other embodiments, the protrusion 33 may be in the form of a frustum-shaped structure, which promotes the formation of a multi-level gradient structure. Its morphological parameters are more consistent with the statistical distribution characteristics of the residual glandular protrusions 33 and electrocautery grooves on the post-prostatectomy wound, further increasing its contact area with the wound.

[0036] Meanwhile, to prevent the rigid protrusion 33 from being unable to expand and contract to adapt to the unevenness of the wound, the protrusion 33 is provided with a chamber communicating with the inside of the airbag 31. When the airbag 31 is inflated or filled with water, the protrusion 33 will gradually expand as the filling medium (such as air or water) inside the airbag 31 increases.

[0037] In the description of this technology, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A urinary catheter for use after prostatectomy, characterized in that, include: Outer tube (1); A urinary catheter (2) is located inside the outer sleeve (1), and the surface of the outer sleeve (1) is provided with an opening that allows the urinary catheter (2) to communicate with the outside of the outer sleeve (1); The expansion assembly (3) includes an air bladder (31) and a branch tube (32) disposed on the surface of the outer tube (1), and a connecting channel disposed inside the outer tube (1) that can connect the air bladder (31) and the branch tube (32). The surface of the air bladder (31) is uniformly provided with a plurality of protrusions (33) for conforming to the wound surface after prostate surgery.

2. A urinary catheter for postoperative use after benign prostatic hyperplasia surgery according to claim 1, characterized in that: The protrusions (33) on the surface of the airbag (31) are composed of several vertically stacked sub-protrusions (33).

3. A urinary catheter for postoperative use after benign prostatic hyperplasia surgery according to claim 2, characterized in that: The volume of the sub-protrusions (33) on the surface of the airbag (31) decreases from bottom to top.

4. A urinary catheter for postoperative use after benign prostatic hyperplasia surgery according to claim 3, characterized in that: The sub-protrusion (33) has a circular structure when viewed from above.

5. A urinary catheter for postoperative use after benign prostatic hyperplasia surgery according to claim 1, characterized in that: The central axes of all the sub-protrusions (33) in each of the protrusions (33) coincide.

6. A urinary catheter for postoperative use after benign prostatic hyperplasia surgery according to claim 1, characterized in that: The protrusion (33) has an overall frustum-shaped structure.

7. A urinary catheter for postoperative use after benign prostatic hyperplasia surgery according to claim 1, characterized in that: The protrusion (33) has a chamber that communicates with the inside of the airbag (31). When the airbag (31) is inflated or filled with water, the protrusion (33) will gradually expand as the filling medium inside the airbag (31) increases.

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