Prostate balloon catheter

Abstract

The utility model discloses a prostate balloon catheter, which relates to the technical field of medical instruments and comprises a balloon body, the balloon body is provided with a first outer contour and a second outer contour which have different functions in the longitudinal direction, the first outer contour is positioned on one side of the near end of the second outer contour, and the second outer contour is positioned on the other side of the near end of the second outer contour. The first area outer contour is used for expansion at the urethra of the prostate, the second area outer contour is used for anchoring in a cavity, the portion, between the first area outer contour and the second area outer contour, of the balloon body is a thin neck section, and a binding piece is arranged on the thin neck section and used for limiting or limiting radial expansion of the balloon body. The prostate balloon catheter provided by the utility model is convenient to operate, the filling operation steps of the balloon can be simplified, and the operation time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a prostate balloon catheter. Background Art

[0002] Prostatic hyperplasia (BPH) is one of the most common benign urological lesions in middle-aged and elderly men, with its incidence and detection rate increasing annually. Early symptoms of BPH include increased nocturia, followed by frequent urination, urgency, dysuria, and even urinary retention. It typically develops after age 40, with incidence increasing with age. Over 50% of men over 50 suffer from BPH, and the prevalence reaches 90% in men over 80. The number of BPH patients in China is estimated to be close to 100 million. Laser surgery, which involves cutting the prostate tissue, is a common treatment option. While highly effective, it carries the risk of postoperative edema, impaired sexual function, and recurrence. Other treatments, such as suspension dilation (threaded rivet fixation), offer significant results, minimal invasiveness, and minimal impact on sexual function, but carry the risk of rivet dislodgement and recurrence. Thermal steam ablation offers minimal invasiveness but requires repeated treatments, resulting in suboptimal long-term efficacy. Vascular embolization is highly effective with minimal impact on sexual function, but requires high surgeon expertise and requires verification of long-term efficacy. In recent years, prostate dilation surgery has gradually become a highly recommended treatment method for benign prostatic hyperplasia. It has the advantages of significant therapeutic effect, being the only one that does not require heating, excision, removal, or implantable devices, having little impact on sexual function, and having significant long-term effects.

[0003] Prostate dilatation is a treatment method that involves inserting a prostate balloon catheter into the patient's prostate urethra and filling the balloon with water. This technique is simple and easy to learn. It not only completely preserves the prostate, but also has the characteristics of minimal trauma, short operation time, less intraoperative bleeding, and rapid postoperative recovery. It is particularly effective in protecting the patient's sexual function. Research results show that transurethral cylindrical water balloon dilatation of the prostate (TUCBDP) can effectively improve the urinary tract and sexual function of BPH patients, with fewer postoperative complications. Its efficacy is not limited by age and prostate volume, and it can be considered a better treatment option for BPH. However, this technology currently has the following difficulties: because the front and rear balloons need to correspond to different cavities, each balloon needs to be filled independently, and the operation is complicated. Utility Model Content

[0004] The purpose of the utility model is to provide a prostate balloon catheter and a preparation method to solve the problems existing in the above-mentioned prior art. The utility model is convenient to operate, can simplify the balloon filling operation steps, and save operation time.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a prostate balloon catheter, including a balloon body, which has a first zone outer contour and a second zone outer contour with different functions in the longitudinal direction, the first zone outer contour is located on one side of the proximal end of the second zone outer contour, the first zone outer contour is used for expansion of the prostate urethra, and the second zone outer contour is used for anchoring in the cavity, the balloon body between the first zone outer contour and the second zone outer contour is a thin neck section, and a restraint is provided on the thin neck section, and the restraint is used to limit or restrict the radial expansion of the balloon body.

[0007] Preferably, it also includes a catheter assembly, the distal section of which passes through the two ends of the balloon body and is sealed and fixed. A first channel and a second channel are provided in the catheter assembly. The first channel is connected to the internal space of the balloon body and is used to fill the balloon body for expansion. The second channel is used to pass a guide wire.

[0008] Preferably, the distal end surface of the catheter assembly is a smooth curved surface structure.

[0009] Preferably, the outer contour of the second zone is larger than or equal to the diameter of the outer contour of the first zone; and the outer diameter of the restraining member is smaller than the diameter of the outer contour of the second zone.

[0010] Preferably, the outer contour of the first region and the outer contour of the second region are made of materials with different hardness, or materials with the same hardness.

[0011] Preferably, a positioning mark is provided on the catheter assembly near the proximal end of the outer contour of the first zone.

[0012] Preferably, the restraining member is a layered restraining belt, a strip restraining belt or a fiber filament.

[0013] Preferably, the restraining member is bonded to the outer surface of the thin neck section by glue or is bonded to the outer surface of the thin neck section by solution coating and curing.

[0014] Preferably, the restraining member is a membrane material, and fiber filaments or rigid metal wires are provided in the membrane material.

[0015] Preferably, the membrane material includes a TPU membrane and an ePTFE membrane.

[0016] The utility model provides a prostate balloon catheter, in which the balloon body has a first zone outer contour and a second zone outer contour with different functions in the longitudinal direction. The first zone outer contour is located on the proximal side of the second zone outer contour. The first zone outer contour is used for expansion of the prostate urethra, and the second zone outer contour is used for anchoring in the cavity. When in use, the radial expansion of the thin neck section of the balloon body is limited or restricted by a restraining member, and the first zone outer contour and the second zone outer contour can be obtained by filling the balloon body once. The operation is convenient, and the balloon filling operation steps can be simplified, saving operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of a prostate balloon catheter according to an embodiment of the present invention when the outer contour of the first zone is equal to the outer contour of the second zone;

[0019] Figure 2 for Figure 1 Cross-sectional view of a mid-prostate balloon catheter;

[0020] Figure 3 This is a schematic diagram of a prostate balloon catheter according to an embodiment of the present utility model in which the outer contour of the second zone has a diameter greater than the outer contour of the first zone;

[0021] Figure 4 for Figure 3 Cross-sectional view of a mid-prostate balloon catheter;

[0022] Figure 5 for Figure 3 Schematic diagram of a prostate balloon catheter positioned in the bladder.

[0023] In the figure: 1-balloon body, 101-outer contour of the first area, 102-outer contour of the second area, 2-catheter assembly, 201-smooth curved surface structure, 3-restraint, 4-positioning mark, 5-bladder. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The purpose of the utility model is to provide a prostate balloon catheter to solve the problems existing in the prior art, which is easy to operate, can simplify the balloon filling operation steps, and save operation time.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] The utility model provides a prostate balloon catheter, such as Figure 1 and Figure 2 As shown, the balloon body 1 includes a first zone outer contour 101 and a second zone outer contour 102 with different functions in the longitudinal direction. The first zone outer contour 101 is located on the proximal side of the second zone outer contour 102. The first zone outer contour 101 is used for expansion of the prostatic urethra, and the second zone outer contour 102 is used for anchoring in the cavity. The balloon body 1 between the first zone outer contour 101 and the second zone outer contour 102 is a thin neck section, and a restraint 3 is provided on the thin neck section. The restraint 3 is used to limit or restrict the radial expansion of the balloon body 1.

[0028] In this embodiment, a catheter assembly 2 is also included. The distal end of the catheter assembly 2 passes through the two ends of the balloon body 1 and is sealed and fixed. A first channel and a second channel are provided in the catheter assembly 2. The first channel is connected to the internal space of the balloon body 1 and is used to fill and expand the balloon body 1. The second channel is used to pass a guide wire. After the prostate balloon catheter is delivered to the lesion site, water is injected into the first channel through the filling port at the proximal end of the catheter assembly 2. Since the prostate hyperplasia compresses the outer contour 101 of the first zone, the outer contour 102 of the second zone of the balloon body 1 is first filled and expanded and positioned at the bladder neck. Further, as the filling pressure increases, the prostate is compressed and expanded to form the outer contour 101 of the first zone of the balloon body 1. The above process can achieve one-time filling and can complete the process of filling and positioning the outer contour 102 of the second zone and filling and expanding the outer contour 101 of the first zone in succession. It is easy to operate and saves surgical time.

[0029] In this embodiment, the distal end surface of the catheter assembly 2 is a smooth curved surface structure 201 to avoid damage to the urethra tissue during transportation.

[0030] In this embodiment, the outer contour of the second zone 102 is equal to the diameter of the outer contour of the first zone 101; the outer diameter of the restraining member 3 is smaller than the diameter of the outer contour of the second zone 102. In other embodiments, such as Figure 3 and Figure 4 As shown, the outer contour of the second area 102 can also be larger than the diameter of the outer contour of the first area 101, and the two form a stepped double-balloon structure. In this case, the schematic diagram after positioning and installation with the bladder 5 is as shown in FIG. Figure 5 shown.

[0031] In this embodiment, the first area outer contour 101 and the second area outer contour 102 are made of materials with different hardness, or materials with the same hardness.

[0032] In this embodiment, a positioning marker 4 is provided on the catheter assembly 2 near the proximal end of the first zone outer contour 101. Designing a clearly identifiable external positioning marker 4 on the catheter assembly 2 allows the operator to directly observe the positioning marker 4 using a cystoscope or resectoscope, a device used during routine examinations, allowing the operator to adjust and position the balloon under direct vision. Combined with the positioning of the anterior balloon (first zone outer contour 101) at the bladder 5, this method provides precise positioning, avoiding issues such as sphincter damage, urinary incontinence, or poor treatment outcomes caused by inaccurate positioning.

[0033] In this embodiment, the restraining member 3 is a layered restraining band, a strip-shaped restraining band, or a fiber filament. When the restraining member 3 is a layered restraining band, the restraining member 3 can be made of a membrane material, and fiber filaments or rigid metal wires can be incorporated into the membrane material to enhance its restraining strength. The membrane material can be a TPU membrane or an ePTFE membrane.

[0034] In this embodiment, the restraining member 3 is bonded to the outer surface of the thin neck section by glue or is bonded to the outer surface of the thin neck section by solution coating and curing.

[0035] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A prostate balloon catheter, characterized in that: It includes a balloon body, which has a first zone outer contour and a second zone outer contour with different functions in the longitudinal direction. The first zone outer contour is located on one side of the proximal end of the second zone outer contour. The first zone outer contour is used for expansion in the prostatic urethra, and the second zone outer contour is used for anchoring in the cavity. The balloon body between the first zone outer contour and the second zone outer contour is a thin neck segment, and a restraint is provided on the thin neck segment. The restraint is used to limit or restrict the radial expansion of the balloon body.

2. The prostate balloon catheter according to claim 1, characterized in that: It also includes a catheter assembly, the distal end of which passes through the two ends of the balloon body and is sealed and fixed. A first channel and a second channel are provided in the catheter assembly. The first channel is connected to the internal space of the balloon body and is used to fill and expand the balloon body. The second channel is used to pass a guide wire.

3. The prostate balloon catheter according to claim 2, characterized in that: The distal end surface of the catheter assembly is a smooth curved surface structure.

4. The prostate balloon catheter according to claim 1, characterized in that: The outer contour of the second zone is larger than or equal to the diameter of the outer contour of the first zone; and the outer diameter of the restraining member is smaller than the diameter of the outer contour of the second zone.

5. The prostate balloon catheter according to claim 1, characterized in that: The outer contour of the first area and the outer contour of the second area are made of materials with different hardness, or materials with the same hardness.

6. The prostate balloon catheter according to claim 2, characterized in that: A positioning mark is provided on the catheter component near the proximal end of the outer contour of the first zone.

7. The prostate balloon catheter according to claim 1, characterized in that: The restraining member is a layered restraining belt, a strip restraining belt or a fiber thread.

8. The prostate balloon catheter according to claim 1, characterized in that: The restraining piece is bonded to the outer surface of the thin neck section by glue or is bonded to the outer surface of the thin neck section by solution coating and curing.

9. The prostate balloon catheter according to claim 1, characterized in that: The restraining member is a membrane material, and fiber wires or rigid metal wires are arranged in the membrane material.

10. The prostate balloon catheter according to claim 9, characterized in that: The membrane materials include TPU membrane and ePTFE membrane.

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