Auxiliary identification device for prostate surgery and cystoscope comprising same

Abstract

The utility model relates to an auxiliary identification device for prostate surgery, which comprises a tube body arranged in the urethra in a sliding manner, one end of the tube body is detachably connected to the inlet end of a cystoscope, and the other end of the tube body extends into the urethra from the outlet end of the cystoscope; the solid section is arranged at the far end of the tube body and is used for limiting the distance between two adjacent treatment point positions; the hollow section is arranged at the near end of the catheter body, an electrocoagulation hook is arranged in the hollow section, and the electrocoagulation hook is used for marking the multiple treatment point positions on the prostate lobes on the two sides of the urethra in an electrocoagulation mode. The device has the advantages of being exquisite in size, easy to operate and accurate in positioning, and is used for auxiliary measurement and positioning operation before the prostate steam ablation operation. The utility model further relates to a cystoscope with the auxiliary identification device.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to an auxiliary marking device for prostate surgery and a cystoscope including the device. Background Technology

[0002] Benign prostatic hyperplasia (BPH) is a common disease in middle-aged and elderly men, with its prevalence increasing with age. The enlargement of the gland compresses and deforms the urethra, causing high bladder pressure and symptoms such as urinary frequency, urgency, nocturia, and difficulty urinating, severely impacting patients' lives. Early BPH can be treated with medication. If medication is ineffective, surgical removal of the enlarged gland, such as transurethral resection of the prostate (TURP), is necessary. TURP is currently the standard surgical procedure for treating prostates with a volume of 30-80 mL, but it is not suitable for high-risk patients taking anticoagulants or with multiple comorbidities. TURP also carries many complications, including urethral stricture, bladder neck contracture, and sexual dysfunction. The most common complication is retrograde ejaculation, with an incidence rate as high as 65%-70%, significantly reducing the patient's postoperative quality of life.

[0003] Prostatic steam ablation is a minimally invasive treatment technique that has emerged in recent years. A cystoscope is inserted into the prostate gland through the urethra, and high-temperature steam is injected into the prostate tissue to inactivate and cause necrosis of the hyperplastic tissue, thereby reducing the prostate volume. It is suitable for prostates with a volume of 30-80 mL and can preserve erectile and ejaculatory function. Patients only need local anesthesia or oral sedatives, making it suitable for high-risk patients. However, its therapeutic effect is highly dependent on the precise location and proper distribution of treatment points. This therapy requires treatment every 1 cm of prostatic lobe. Too many treatments or too small a spacing between treatment points can lead to irritation symptoms and prolonged indwelling catheterization time. Too few treatments or too large a spacing between treatment points can make the ablation effect difficult to achieve the desired result. Currently, the selection of treatment points mainly relies on the doctor's experience and visual observation with a cystoscope, lacking precise positioning tools. This results in uneven distribution of treatment points, unsatisfactory ablation effects, or damage to surrounding tissues. Currently, there is still no suitable method for precise location and measurement of the injection site. Therefore, how to develop a compact, easy-to-operate, and precise auxiliary marking device for auxiliary measurement and positioning before prostate steam ablation is an urgent problem that needs to be solved. Utility Model Content

[0004] To address the problems existing in the prior art, the first objective of this utility model is to provide an auxiliary marking device for prostate surgery, comprising a tube body, a solid section, and a hollow section, with an electrocoagulation hook installed inside the hollow section. This device is characterized by its compact size, simple operation, and precise positioning, and is used for auxiliary measurement and positioning operations before prostate steam ablation surgery.

[0005] The second objective of this invention is to provide a cystoscope with the aforementioned auxiliary marking device, which can be used under direct visualization with the cystoscope and achieve electrocoagulation marking through the guidance of the cystoscope.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An auxiliary marking device for prostate surgery includes: a tube slidably disposed in the urethra, the proximal end of the tube being detachably connected to the inlet end of a cystoscope, and the distal end of the tube extending from the outlet end of the cystoscope into the urethra; a solid section disposed at the distal end of the tube for defining the distance between two adjacent treatment points; and a hollow section disposed at the proximal end of the tube, the hollow section having an electrocoagulation hook disposed therein for electrocoagulating and marking multiple treatment points on the prostatic lobes on both sides of the urethra.

[0008] Furthermore, the hollow segment has a positioning hole formed on one side wall near the solid segment, the positioning hole being used for one end of the electrocoagulation hook to extend and for electrocoagulating to mark the treatment point.

[0009] Furthermore, the tube is configured to rotate about its central axis to adjust the position of the electrocoagulation hook.

[0010] Furthermore, the electrocoagulation hook includes: a cylindrical body disposed within the hollow section; and an electrical conductor rod disposed within the cylindrical body, the end of which has a hook portion for extending out from the positioning hole and electrocoagulating to mark the treatment point.

[0011] Furthermore, the conductive rod is fixed inside the cylinder, and the cylinder is slidably disposed within the hollow section.

[0012] Furthermore, the conductive rod is slidably disposed within the cylinder, and the cylinder is fixed to the inner wall of the hollow section.

[0013] Furthermore, the outer wall of the tube is provided with scale lines.

[0014] Furthermore, the outer diameter of the tube is 0.3-3 mm, and the length of the tube is 20-100 cm; the diameter of the hollow section is 0.1-2.8 mm, and the length of the hollow section is 17-99.9 cm; the length of the solid section is 0.1-3 cm.

[0015] A cystoscope includes: a cystoscope body, the cystoscope body including a sheath slidably disposed in the urethra, the operating end of the sheath being provided with a first connecting tube and a second connecting tube, the first connecting tube being used to connect an endoscope and position its lens at the movable end of the sheath for observation of the urethra; and an auxiliary marking device according to the above, the auxiliary marking device being slidably disposed in the cystoscope body, wherein the tube is connected from the inlet end of the second connecting tube and extends into the urethra through the movable end of the sheath.

[0016] Furthermore, a locking element is provided between the pipe body and the second connecting pipe to fix the relative position of the pipe body and the second connecting pipe.

[0017] This utility model has the following advantages:

[0018] This utility model's auxiliary marking device mainly includes a tube body and an electrocoagulation hook set inside the tube body. Combined with the visualization operation of a cystoscope, the fixed length of the solid section precisely defines the spacing between adjacent treatment points, avoiding the human measurement errors of traditional intraoperative procedures. The electrocoagulation hook, extending from the positioning hole in the tube body, can directly form electrocoagulation marking points on the surface of the prostate lobes on both sides of the urethra, achieving high positioning accuracy. The rotatable and adjustable tube body, along with the design of the scale lines on the outer wall, allows the operator to dynamically adjust the marking position and measure the spacing in real time under direct vision. The adaptable structure between the tube body and the cystoscope enables minimally invasive intervention; its diameter matches the urethral anatomy, ensuring marking accuracy while avoiding secondary damage to the urethral mucosa. This device can precisely locate each treatment point before prostate steam ablation surgery using cystoscope guidance, ensuring equal and constant spacing between treatment points, reducing the number of treatments, avoiding undertreatment or overtreatment, and reducing the risk of damage to surrounding tissues, thus improving the therapeutic effect and safety of steam ablation technology. The tube body and electrocoagulation hook can be used separately or in a fixed integrated design to meet different surgical needs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the auxiliary marking device for prostate surgery of this utility model, with its solid segment located at the bladder neck position in the urethra.

[0020] Figure 2 yes Figure 1 A magnified view of a portion at point A.

[0021] Figure 3This is a schematic diagram of the structure of the solid section of the auxiliary marking device for prostate surgery of this utility model, showing the top of the device moving to the first marking position.

[0022] Figure 4 This is a schematic diagram of another embodiment of the auxiliary marking device for prostate surgery according to this utility model.

[0023] Figure 5 yes Figure 4 A magnified view of a portion of point B.

[0024] Figure 6 This is a schematic diagram of the structure of the auxiliary marking device for prostate surgery according to this utility model, which marks the treatment points.

[0025] Figure 7 This is a schematic diagram of the structure of the cystoscope of this utility model.

[0026] Among them, 1 is the auxiliary marking device, 101 is the tube body, 101a is the scale line, 102 is the solid section, 103 is the hollow section, 103a is the positioning hole, 2 is the electrocoagulation hook, 201 is the cylinder body, 202 is the electric conductor rod, 202a is the hook part, 3 is the cystoscope, 301 is the cystoscope body, 301a is the endoscope sheath, 301b is the first connecting tube, 301c is the second connecting tube, 301d is the locking element, 302 is the endoscope, 4 is the urethra, 401 is the treatment point, 401a is the first marking position, 401b is the second marking position, 401c is the third marking position, 5 is the prostate lobe, and 6 is the bladder neck. Detailed Implementation

[0027] The following description is merely illustrative in nature and is in no way intended to limit the present invention, its application, or use. It will be further understood that the terms “comprising” and / or “including” as used herein specify the presence of the mentioned features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. It will be understood that when an element, component, and / or part is referred to as “connected to another element, component, and / or part,” it may be directly connected to another element, component, and / or part, or there may be intermediate elements. It will be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, components, and / or parts, these elements, components, and / or parts should not be limited by these terms. These terms are used only to distinguish one element, component, or part from another element, component, or part. Therefore, the first element, component, or part discussed below may be referred to as the second element, component, or part without departing from the teachings of this invention. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the relevant field and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0028] It should be understood that, for clarity, the accompanying drawings are not drawn to scale, and the same or similar reference numerals indicate the same or similar parts or components. Furthermore, it should be understood that any embodiments described in this application and the technical features they include can be combined with each other.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1-3As shown in Figure 7, the auxiliary marking device 1 mainly includes a tube body 101 and an electrocoagulation hook 2 disposed within the tube body 101. The auxiliary marking device 1 is used for treatment marking before prostate steam ablation surgery. It is inserted into the urethra 4 through a cystoscope 3. The overall structure is cylindrical. The tube body 101 is slidably disposed in the urethra 4. The end of the urethra 4 is defined as the bladder neck 6. The urethra 4 has prostate lobes 5 on both sides. The tube body 101 can move between the urethral inlet and the bladder neck 6. The proximal end of the tube body 101 is detachably connected to the inlet end of the cystoscope 3, and the distal end of the tube body 101 extends from the outlet end of the cystoscope 3 into the urethra 4. The proximal end of the tube body 101 is defined as the end located outside the patient's body, and the distal end of the tube body 101 is defined as the end located inside the patient's body. The outer diameter of the tube body 101 is 0.3-3 mm, and the length of the tube body 101 is 20-100 cm. Preferably, the outer diameter of the tube body 101 is 3 mm, and the length of the tube body 101 is 70 cm.

[0031] Continue to refer to Figure 1-3 As shown, the tube body 101 is composed of a solid segment 102 and a hollow segment 103. The solid segment 102 is formed at the distal end of the tube body 101 and is used to define the distance between two adjacent treatment points 401 within the urethra 4. The length of the solid segment 102 is 0.1-3 cm, preferably 1 cm, which is a fixed value.

[0032] Continue to refer to Figure 1-3 As shown, a hollow segment 103 is disposed at the proximal end of the tube body 101. The hollow segment 103 extends from the proximal end of the tube body 101 along its length and connects with the solid segment 102. The hollow segment 103 is cylindrical in shape, with a diameter of 0.1-2.8 mm and a length of 17-99.9 cm. Preferably, the hollow segment 103 has a diameter of 1.1 mm and a length of 69 cm.

[0033] Referring again to Figures 1-3, the electrocoagulation hook 2 is disposed inside the hollow segment 103. The electrocoagulation hook 2 is used to electrocoagulate and mark multiple treatment points 401 on the prostatic lobes 5 on both sides of the urethra 4. The tube body 101 is configured to rotate about its central axis to adjust the position of the electrocoagulation hook 2 accordingly.

[0034] like Figure 1-3As shown, a positioning hole 103a is formed on one side wall of the hollow segment 103 near the solid segment 102. The positioning hole 103a is located at the end of the hollow segment 103 and is close to the bottom end of the solid segment 102. The positioning hole 103a is used for one end of the electrocoagulation hook 2 to extend and for electrocoagulation to mark the treatment point 401. The electrocoagulation hook 2 can move freely within the hollow segment 103. By rotating the tube body 101, the positioning hole 103a is moved axially so that the positioning hole 103a can correspond to one side of the prostate lobe 5. The diameter of the positioning hole 103a is 0.1-2.8 mm, preferably 1.0-1.5 mm.

[0035] Continue to refer to Figure 1-7 The electrocoagulation hook 2 includes a cylindrical body 201 and an electric conductor rod 202. The cylindrical body 201 is disposed inside the hollow section 103, and the electric conductor rod 202 is disposed inside the cylindrical body 201. Its end has a hook portion 202a, which is used to extend from the positioning hole 103a and electrocoagulate the marked treatment point 401. The end of the electric conductor rod 202 has an insulating sleeve for the operator to hold the electrocoagulation hook.

[0036] like Figure 1-3 As shown, in this embodiment, the electric conductor rod 202 is fixed inside the cylinder 201, and the cylinder 201 is slidably disposed inside the hollow section 103. That is, the electrocoagulation hook 2 and the tube 101 are separately disposed. Different models and sizes of electrocoagulation hook 2 can be replaced as needed. The position of the positioning hole 103a is adjusted by moving the cylinder 201, and then the electrocoagulation hook 2 is moved to adjust the position of the hook part 202a of the electric conductor rod 202 so that it extends out from the positioning hole 103a for electrocoagulation marking.

[0037] like Figure 4 and Figure 5 As shown, another embodiment of the auxiliary marking device 1 is illustrated. An electric conductor 202 is slidably disposed within a cylindrical body 201. The outer wall of the cylindrical body 201 is fixed to the inner wall of the hollow section 103, meaning the electrocoating hook 2 and the cylindrical body 101 are integrally formed. The electric conductor 202 can move within the cylindrical body 201, thereby moving the hook portion 202a and extending it out through the positioning hole 103a for electrocoating marking. The length of the cylindrical body 101 is 61 cm, and its outer diameter is 2.7 mm. The diameter of the hollow section 103 is equal to the outer diameter of the cylindrical body 201; specifically, the outer diameter of the cylindrical body 201 is 0.8 mm, the diameter of the hollow section 103 is 0.8 mm, and the length of the hollow section 103 is 60 cm. The length of the solid section 102 is 1 cm, and the diameter of the positioning hole 103a is 0.4 mm. In other words, the electrocoating hook 2 and the cylindrical body 101 can be either separate components or integrally formed.

[0038] like Figure 2 and Figure 5As shown, for ease of operation, the outer wall of the tube 101 is provided with a scale line 101a. There is one scale line 101a, which is wrapped around the outer wall of the hollow section 103. The distance between the scale line 101a and the hook portion 202a of the electrocautery hook 2 extending from the positioning hole 103a is 1cm. Therefore, the length of the solid section 102 and the distance from the scale line 101a to the positioning hole 103a are both fixed values, which facilitates the operator to observe and position the tube with the cystoscope 3. By observing the scale line 101a through the lens of the cystoscope 3, the length of the prostate and the position of the tube 101 in the urethra 4 can be determined.

[0039] like Figure 7 As shown, a cystoscope 3 includes a cystoscope body 301 and the aforementioned auxiliary marking device 1. The cystoscope body 301 includes a sheath 301a slidably disposed in the urethra 4. The operating end of the sheath 301a is provided with a first connecting tube 301b and a second connecting tube 301c. The first connecting tube 301b is used to connect to an endoscope 302 and position its lens at the moving end of the sheath 301a to observe the urethra 4. The auxiliary marking device 1 is slidably disposed inside the cystoscope body 301, wherein the tube 101 is connected from the inlet end of the second connecting tube 301c and extends into the urethra 4 through the moving end of the sheath 301a.

[0040] like Figure 7 As shown, a locking element 301d is provided between the tube body 101 and the second connecting tube 301c to fix the relative position of the tube body 101 and the second connecting tube 301c. The locking element 301d is located at the inlet end of the second connecting tube 301c. When the tube body 101 is inserted from the inlet end of the second connecting tube 301c and extends to the predetermined position, the locking element 301d fixes the tube body 101 to prevent the tube body 101 from moving or rotating during the electrocoagulation marking process. The locking element 301d consists of an annular body and a locking screw. The annular body is sleeved on the inlet end of the second connecting tube 301c. The locking screw cooperates with multiple locking grooves spaced along the length of the outer wall of the tube body 101 to ensure that the tube body 101 will not move or rotate.

[0041] like Figure 1 , 3As shown in Figure 6, when the first end of the solid segment 102 is located at the bladder neck 6, the second end of the solid segment 102 is defined as the first marking position 401a. When the first end of the solid segment 102 moves to the first marking position 401a, the second end of the solid segment 102 is defined as the second marking position 401b. When the first end of the solid segment 102 moves to the second marking position 401b, the second end of the solid segment 102 is defined as the third marking position. Before the prostate vapor ablation operation is performed, the above-mentioned auxiliary marking device 1 is inserted into the urethra 4 through the working channel of the cystoscope 3 until the first end / apex of the solid segment 102 is aligned with the bladder neck 6. The positioning hole 103a corresponds to one side of the prostate lobe 5. The hook portion 202a of the electrocoagulation hook 2 extends out from the positioning hole 103a and electrocoagulates and marks the treatment point 401 on the prostate lobe 5. This marking point is recorded as the first marking position 401a. The distance between the first marking position 401a and the bladder neck 6 is the length of the solid segment 102, preferably 1 cm. Then, the moving tube 101 lowers the first end / apex of the solid segment 102 to the first marked position 401a, and then extends the hook 202a of the electrocoagulation hook 2 from the positioning hole 103a to mark the treatment point 401 on the prostate lobe 5. This marked point is designated as the second marked position 401b. The distance between the second marked position 401b and the first marked position is also the length of the solid segment 102, and the distance between the second marked position 401b and the first marked position 401a is also 1 cm. Similarly, the tube 101 is moved again to mark the third marked position 401c. The distance between the third marked position 401c and the second marked position 401b is also 1 cm, thus making the distances of the first marked position 401a, the second marked position 401b, and the third marked position 401c equal. Then the tube 101 is pushed inward again until the first end / apex of the solid segment 102 is aligned with the bladder neck 6. Rotate the tube body 101 180° and align the positioning hole 103a with the prostate lobe 5 on the other side. Repeat the above positioning and marking operation to mark the treatment point 401 on the other prostate lobe 5 until both prostate lobes 5 are marked. This electrocoagulation mark will serve as the injection point for subsequent steam ablation treatment. The position is fixed during the above marking process by using the locking member 301d to fix the relative position of the tube body 101 and the second connecting tube 301c.

[0042] In summary, the auxiliary marking device of this invention mainly includes a tube body and an electrocoagulation hook set inside the tube body. Combined with the visualization operation of a cystoscope, the fixed length of the solid segment precisely defines the spacing between adjacent treatment points, avoiding the human measurement errors of traditional intraoperative procedures. The electrocoagulation hook, extending from the positioning hole of the tube body, can directly form electrocoagulation marking points on the surface of the prostate lobes on both sides of the urethra, achieving high positioning accuracy. The rotatable and adjustable tube body, along with the design of the scale lines on the outer wall, allows the operator to dynamically adjust the marking position and measure the spacing in real time under direct vision. The adaptable structure between the tube body and the cystoscope enables minimally invasive intervention; its diameter matches the urethral anatomy, ensuring marking accuracy while avoiding secondary damage to the urethral mucosa. This device can precisely locate each treatment point before prostate steam ablation surgery using cystoscope guidance, ensuring equal and constant spacing between treatment points, reducing the number of treatments, avoiding undertreatment or overtreatment, and reducing the risk of damage to surrounding tissues, thus improving the therapeutic effect and safety of steam ablation technology. The tube body and electrocoagulation hook can be used separately or in a fixed integrated design to meet different surgical needs.

[0043] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An auxiliary identification device for prostate surgery, characterized in that, The application relates to an auxiliary marking device for a cystoscope, comprising: a tubular body slidably arranged in a urethra, a proximal end of the tubular body being detachably connected to an inlet end of a cystoscope, a distal end of the tubular body extending into the urethra from an outlet end of the cystoscope; a solid section arranged at the distal end of the tubular body, used for defining the interval between two adjacent treatment points; a hollow section arranged at the proximal end of the tubular body, an inside of the hollow section being provided with an electrocoagulation hook, the electrocoagulation hook being used for electrocoagulating and marking a plurality of treatment points on prostate lobes on both sides of the urethra. The hollow section is formed with a positioning hole on one side wall close to the solid section, the positioning hole being used for allowing one end of the electrocoagulation hook to extend out and electrocoagulate and mark the treatment points. The tubular body is arranged to be rotatable around a central axis thereof, so as to adjust the position of the electrocoagulation hook. The electrocoagulation hook comprises: a barrel arranged in the hollow section; and an electric lead arranged in the barrel, an end of the electric lead being provided with a hook portion used for extending out of the positioning hole and electrocoagulating and marking the treatment points.

2. The auxiliary identification device for prostate surgery according to claim 1, wherein The electric lead is fixed in the barrel, and the barrel is slidably arranged in the hollow section.

3. The auxiliary identification device for prostate surgery of claim 2, wherein, The electric lead is slidably arranged in the barrel, and the barrel is fixed to an inner wall of the hollow section.

4. The auxiliary identification device for prostate surgery of claim 2, wherein, An outer wall of the tubular body is provided with scale lines. The tubular body has an outer diameter of 0.3-3 mm and a length of 20-100 cm, the hollow section has a diameter of 0.1-2.8 mm and a length of 17-99.9 cm, and the solid section has a length of 0.1-3 cm. The application further relates to a cystoscope body comprising a mirror sheath tube slidably arranged in a urethra, an operating end of the mirror sheath tube being provided with a first connecting tube and a second connecting tube, the first connecting tube being used for connecting an endoscope and making a lens of the endoscope located at a moving end of the mirror sheath tube so as to observe the urethra.

5. The auxiliary identification device for prostate surgery of claim 4, wherein, The auxiliary marking device according to any one of claims 1 to 8 is slidably arranged in the cystoscope body, wherein the tubular body is connected to an inlet end of the second connecting tube and extends into the urethra through the moving end of the mirror sheath tube.

6. The auxiliary identification device for prostate surgery of claim 4, wherein, A locking member is arranged between the tubular body and the second connecting tube, used for fixing the relative position of the tubular body and the second connecting tube.

7. The auxiliary identification device for prostate surgery of claim 1, wherein, ​ 8. The auxiliary identification device for prostate surgery of claim 1, wherein, ​ 9. A cystoscope, characterized in that ​ ​ ​ 10. A cystoscope according to claim 9, wherein, ​

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