Prostate resection mirror and outer sheath capable of reducing urethral injury

Abstract

The utility model relates to a prostate resection mirror capable of reducing urethral injury and an outer sheath. The prostate resection mirror comprises an outer sheath and an inner sheath; the outer sheath comprises a tube body, a sealing part and a hole opening part are arranged on the outer wall of the side, close to the bevel opening of the inner sheath, of the tube body, the sealing part is located on the side, facing an opening of the bevel opening, of the inner sheath, a plurality of water return holes are formed in the hole opening part, and the outer side edge of each water return hole is of a fillet structure. According to the urethral catheter, the sealing part and the opening part are arranged on the peripheral wall of the catheter body, the sealing part is located on the side, facing the bevel opening, of the inner sheath, and therefore damage to urethral mucosa caused by the sealing part can be reduced, a patient is protected, the edge of the side, away from the axis of the catheter body, of the water return hole is arranged to be of the fillet structure, and therefore the urethral catheter is convenient to use. Due to the design, the friction force between the water return hole and the urethral mucosa can be reduced, so that the urethral mucosa can be further protected.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a prostatectomy endoscope and outer sheath that can reduce urethral injury, used to reduce damage to the urethral mucosa by the outer sheath during surgery. Background Technology

[0002] In existing technology, a prostatectomy endoscope includes an inner sheath and an outer sheath. The outer sheath is fitted over the inner sheath, allowing water to enter through the inner sheath and exit through a reflux hole on the outer sheath and a central hole between the inner and outer sheaths. A bevel is typically located at the end of the inner sheath; this bevel serves to prevent contamination and ensure the lens remains within the inner sheath. In actual use, damage to the urethral mucosa from the prostatectomy endoscope sheath is primarily due to friction between the sheath and the urethral mucosa. In particular, the reflux hole on the outer sheath increases this friction, and combined with the gravity of the endoscope, the lower side of the sheath in the direction of gravity is more prone to damaging the urethral mucosa, thus increasing the risk and severity of urethral injury. Utility Model Content

[0003] Therefore, it is necessary to provide a prostatectomy endoscope and sheath that can reduce urethral injury, addressing the issue that the lower side of the endoscope sheath in the direction of gravity is prone to damage to the urethral mucosa, thereby increasing the risk and severity of urethral injury.

[0004] A prostatectomy endoscope that reduces urethral injury, comprising an outer sheath and an inner sheath;

[0005] The outer sheath includes a tube body. A sealing part and an opening part are provided on the outer wall of the tube body near the oblique opening of the inner sheath along the circumferential direction. The sealing part is located on the side facing the oblique opening of the inner sheath and is used to provide support for the prostatectomy endoscope in the urethra. The opening part is provided with multiple water return holes, and the outer edge of the water return holes has a rounded corner structure.

[0006] As a further improvement of this utility model, the return water hole is inclined toward one side of the bevel.

[0007] As a further improvement of this utility model, the inclination angle between the return water hole and the axis of the pipe body is α, where 45°≤α≤80°.

[0008] As a further improvement of this utility model, the central angle of the sealing part corresponding to the tube body is θ, where 30°≤θ≤90°.

[0009] As a further improvement of this utility model, the number of return water holes on the opening portion near the sealing portion is greater than the number of return water holes far away from the sealing portion.

[0010] As a further improvement of this utility model, the diameter of the return water hole near the sealing part on the opening portion is larger than the diameter of the return water hole away from the sealing part.

[0011] As a further improvement of this utility model, the plurality of return water holes are divided into multiple sets of holes along the axial direction of the pipe body, and the multiple sets of holes are arranged in a ring at intervals on the opening portion.

[0012] As a further improvement of this utility model, each group of holes contains at least two return water holes, and the return water holes in each group of holes are spaced apart along the axial direction of the pipe body.

[0013] As a further improvement of this utility model, the two adjacent return water holes in each group of holes are equally spaced.

[0014] This invention also proposes an outer sheath, which is the outer sheath described above; the outer sheath is used to provide support for a prostatectomy endoscope within the urethra.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this utility model, a sealing part and an opening part are provided on the outer peripheral wall of the tube body, and the sealing part is located on the side facing the oblique opening of the inner sheath, that is, on the lower side of the sheath in the direction of gravity. Due to the smooth surface of the sealing part, damage to the urethral mucosa at the sealing part can be reduced, thereby protecting the patient.

[0017] 2. In this utility model, the edge of the return water hole away from the axis of the pipe is set as a rounded corner structure. This design can reduce the friction between the return water hole and the urethral mucosa, thereby further protecting the urethral mucosa.

[0018] 3. In this utility model, the return water hole is tilted towards the side of the inclined opening, which can guide the flushing liquid and thus better recover the flushing liquid. Attached Figure Description

[0019] Figure 1 This is a partial three-dimensional structural diagram of the prostatectomy endoscope according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer sheath;

[0021] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0022] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0023] In the diagram: 1. Pipe body; 11. Opening; 111. Return water hole; 12. Sealing part; 2. Inner sheath; 21. Slanted opening. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This embodiment presents a prostatectomy endoscope that reduces urethral injury, comprising an outer sheath and an inner sheath 2. Please refer to... Figure 1 Both the outer sheath and the inner sheath 2 are components of the prostatectomy endoscope. The outer sheath is involved in the recovery of the irrigation fluid. One end of the inner sheath 2 is provided with an oblique opening 21, which is mainly used to move the prostate to achieve the purpose of dissection.

[0026] Specifically, during prostate surgery, one end of the prostatectomy scope is first inserted into the urethra to observe the patient's urethra. Then, the prostate and bladder are examined. If no abnormalities are found, the prostate tissue can be separated using the oblique opening 21 at the front end of the inner sheath 2, while the electrocautery ring is used for cutting. It should be noted that water circulation is necessary throughout the entire process to provide a better surgical field and to dissipate the heat generated by the electrocautery ring.

[0027] During the water circulation process, the flushing fluid enters the urethra and bladder through the inlet and flushes the bladder to remove the heat generated during the operation. The flushed fluid enters the space between the outer and inner sheaths through the return hole 111 on the outer sheath and is then discharged through the drain pipe.

[0028] The outer sheath includes a tube body 1, which is the main body of the outer sheath. A sealing part 12 and an opening part 11 are arranged circumferentially on the outer wall of the end of the tube body 1 near the oblique opening 21. The sealing part 12 is located on the side facing the opening of the oblique opening 21 of the inner sheath 2, meaning that during surgery, the sealing part 12 is located on the lower side of the tube body 1 in the direction of gravity. The sealing part 12 is a smooth surface on the tube body 1, and its location on the lower side of the tube body 1 mainly serves to provide support for the prostatectomy endoscope within the urethra. This support force counteracts the gravity of the endoscope. The opening part 11 is mainly used to create a return water hole 111. It should be noted that placing the sealing part 12 on the side facing the opening of the oblique opening 21 of the inner sheath 2 is important because during surgical resection, the support force of the prostatectomy endoscope mainly comes from the location of the sealing part 12. If a return water hole 111 is created at the sealing part 12, the friction between the return water hole 111 and the urethral mucosa will be greater, potentially causing damage to the urethral mucosa.

[0029] Furthermore, the circumference of the tube body 1 can be divided into twelve equal parts at equal angles, which can be defined as the direction from one o'clock to twelve o'clock according to the clockwise standard of a clock, with the six o'clock direction directly opposite the oblique opening 21. In the prior art, during use, the return water hole 111 at the six o'clock position of the tube body 1 is prone to friction with the urethral mucosa, resulting in damage to the urethral mucosa and potentially leading to postoperative urethral stricture. Therefore, the sealing part 12 is set on the side facing the opening of the oblique opening 21 of the inner sheath 2, that is, the return water hole 111 at the six o'clock position is eliminated. This makes the surface of the tube body 1 in the six o'clock position relatively smooth, thereby reducing the friction between the tube body 1 and the urethral mucosa, protecting the urethral mucosa, and reducing the occurrence of surgical complications.

[0030] Specifically, the central angle corresponding to the sealing part 12 needs to meet a certain range. The central angle corresponding to the distribution of the sealing part 12 on the tube body 1 is θ, 30°≤θ≤90°, that is, the central angle corresponding to the sealing part 12 needs to be greater than or equal to 30°. This avoids opening the return water hole 111 in the six o'clock direction, thereby reducing damage to the urethral mucosa. The central angle corresponding to the sealing part 12 also needs to be less than or equal to 90°. This reduces the area occupied by the sealing part 12, thereby correspondingly increasing the area occupied by the opening part 11. This, in turn, allows for a corresponding increase in the number of return water holes 111 and the area of ​​the distribution area of ​​the return water holes 111, facilitating the recovery of the flushing fluid.

[0031] The opening portion 11 has multiple return water holes 111, and the return water holes 111 are inclined toward one side of the inclined opening 21, such as... Figure 2As shown. The return water hole 111 primarily serves a drainage function. The flushing fluid entering the bladder through the inlet, after flushing the bladder, flows through the return water hole 111 into the space between the tube body 1 and the inner sheath 2, and then exits through the drain outlet. Therefore, the multiple return water holes 111 increase the speed of flushing fluid return, facilitating flushing recovery and circulation. Furthermore, the return water hole 111 is inclined towards the bevel 21. Since the flushing fluid flows back into the return water hole 111 from the end closest to the bevel 21, this arrangement is more rational, facilitating the guidance of flushing fluid flow and thus promoting its entry into the space between the tube body 1 and the inner sheath 2, thereby facilitating flushing fluid recovery and discharge.

[0032] Furthermore, the angle of inclination between the return water hole 111 and the axis of the pipe body 1 is α, where 45° ≤ α ≤ 80°. It should be noted that α is the angle of inclination between the axis of the return water hole 111 and the axis of the pipe body 1 towards the inclined opening 21. Figure 3 As shown, the angle between the return water hole 111 and the axis of the pipe body 1 needs to meet a certain range, specifically, the angle between the return water hole 111 and the axis of the pipe body 1 needs to be less than or equal to 80°. This allows the return water hole 111 to tilt as much as possible towards the oblique opening 21. Since the flushing fluid flows back from the oblique opening 21 through the return water hole 111 to the space between the pipe body 1 and the inner sheath 2, and finally exits through the drain outlet, this design is more reasonable. The return water hole 111 can guide the flushing fluid during its flow, thus facilitating its flow into the space between the pipe body 1 and the inner sheath 2. The angle between the return water hole 111 and the axis of the pipe body 1 also needs to be greater than or equal to 45°, which reduces processing difficulty and facilitates manufacturing.

[0033] In addition, such as Figure 4 As shown, the outer edge of the return water hole 111 has a rounded corner structure, that is, the edge of the return water hole 111 away from the axis of the tube body 1 has a rounded corner structure. In other words, the side of the return water hole 111 that contacts the urethral mucosa is set with a rounded corner structure. Since the surface of the rounded corner structure is relatively smooth and has no sharp corners, this design can reduce the friction between the return water hole 111 and the urethral mucosa, thereby further protecting the urethral mucosa.

[0034] As an optional embodiment, the number of return water holes 111 near the sealing part 12 on the opening portion 11 is greater than the number of return water holes 111 away from the sealing part 12. Since there are no return water holes 111 at the sealing part 12, providing more return water holes 111 near the sealing part 12 is beneficial for draining the flushing fluid near the six o'clock position inside the pipe body 1, reducing the accumulation of flushing fluid in the pipe body 1, and facilitating the recovery of flushing fluid.

[0035] As an optional embodiment, the diameter of the return water hole 111 near the sealing part 12 on the opening portion 11 is larger than the diameter of the return water hole 111 away from the sealing part 12. Similarly, since there is no return water hole 111 at the sealing part 12, the diameter of the return water hole 111 near the sealing part 12 is set to be larger than the diameter of the return water hole 111 away from the sealing part 12. This facilitates the discharge of flushing fluid near the six o'clock position inside the pipe body 1, reduces the accumulation of flushing fluid in the pipe body 1, and facilitates the recovery of flushing fluid.

[0036] As an optional embodiment, the multiple return water holes 111 are divided into multiple sets of holes along the axial direction of the pipe body 1, and the multiple sets of holes are arranged in a ring at intervals on the opening portion 11. That is, the multiple return water holes 111 can be divided into multiple sets of holes, and the number of return water holes 111 in each set of holes is at least two. This makes the number of return water holes 111 in each set of holes more even, so that the arrangement of return water holes 111 on the opening portion 11 is more comprehensive, which is conducive to the discharge of flushing fluid in the pipe body 1 from multiple positions.

[0037] In addition, multiple sets of holes are arranged in a ring at intervals on the opening portion 11, which reduces interference between adjacent sets of holes and facilitates the discharge of flushing fluid. It should be noted that the return water holes 111 in each set of holes are distributed at intervals along the axial direction of the pipe body 1, which facilitates the processing of the return water holes 111.

[0038] Furthermore, adjacent return water holes 111 in each group of holes are spaced at equal intervals. This equal spacing ensures a more uniform and comprehensive distribution of all return water holes 111 within each hole group. Consequently, the distribution of all return water holes 111 across multiple hole groups on the opening portion 11 is more uniform and comprehensive, allowing the flushing fluid within the pipe body 1 to drain from multiple directions between the pipe body 1 and the inner sheath 2, thus facilitating the discharge of the flushing fluid. All the specific examples of return water holes 111 described above, whether optimizing the design of the return water holes 111 or appropriately increasing the number of return water holes 111, are aimed at ensuring that the return water holes 111 have sufficient drainage capacity.

[0039] This invention also proposes an outer sheath, including the outer sheath described above. The front end of the outer sheath has a sealing portion 12 and an opening portion 11 in the circumferential direction. The sealing portion 12 is a smooth surface on the outer sheath, located on the lower side of the outer sheath, and mainly serves to provide support for the prostatectomy endoscope within the urethra. This outer sheath with the sealing portion 12 can reduce damage to the urethral mucosa and decrease the occurrence of surgical complications.

[0040] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0041] 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 "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A prostatectomy endoscope that reduces urethral injury, characterized in that, Including the outer sheath and the inner sheath (2); The outer sheath includes a tube (1), and a sealing part (12) and an opening part (11) are provided on the outer wall of the tube (1) near the oblique opening (21) of the inner sheath (2) along the circumferential direction. The sealing part (12) is located on the side facing the opening of the oblique opening (21) of the inner sheath (2), and it is used to provide support for the prostatectomy endoscope in the urethra. The opening part (11) is provided with a plurality of water return holes (111), and the outer edge of the water return holes (111) is rounded.

2. The prostatectomy endoscope for reducing urethral injury according to claim 1, characterized in that: The return water hole (111) is inclined toward one side of the inclined opening (21).

3. The prostatectomy endoscope with reduced urethral injury according to claim 2, characterized in that: The angle between the return water hole (111) and the axis of the pipe body (1) is α, where 45°≤α≤80°.

4. The prostatectomy endoscope with reduced urethral injury according to claim 1, characterized in that: The central angle of the sealing part (12) on the tube body (1) is θ, where 30°≤θ≤90°.

5. The prostatectomy endoscope for reducing urethral injury according to claim 1, characterized in that: The number of return water holes (111) on the opening portion (11) near the sealing portion (12) is greater than the number of return water holes (111) far away from the sealing portion (12).

6. The prostatectomy endoscope for reducing urethral injury according to claim 1, characterized in that: The diameter of the return water hole (111) on the opening portion (11) near the sealing portion (12) is larger than the diameter of the return water hole (111) far away from the sealing portion (12).

7. The prostatectomy endoscope for reducing urethral injury according to claim 1, characterized in that: The multiple return water holes (111) are divided into multiple sets of holes along the axial direction of the pipe body (1), and the multiple sets of holes are arranged in a ring at intervals on the opening portion (11).

8. The prostatectomy endoscope for reducing urethral injury according to claim 7, characterized in that: Each group of holes contains at least two return holes (111), and the return holes (111) in each group of holes are spaced apart along the axial direction of the pipe body (1).

9. The prostatectomy endoscope for reducing urethral injury according to claim 8, characterized in that: Each set of holes is arranged at equal intervals between two adjacent return holes (111).

10. An outer sheath, characterized in that, It is the outer sheath as described in any one of claims 1-9; The outer sheath is used to provide support for the prostatectomy scope within the urethra.

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