Prostate ablation device

Abstract

The utility model relates to the technical field of medical instruments, and provides a prostate ablation device which comprises a catheter, a needle outlet cavity channel is formed in the catheter, and a needle outlet communicated with the needle outlet cavity channel is formed in the far end of the catheter; the ablation needle is movably arranged in the needle outlet cavity channel and can extend out of the catheter from the needle outlet or return to the needle outlet of the catheter; the water bag is arranged at the far end of the catheter; the ultrasonic probe is arranged on the catheter and located in the water bag; according to the prostate ablation device, the ablation needle can be positioned more accurately under the dual cooperation action of the ultrasonic probe and the camera, the needle inserting precision of the ablation needle is well guaranteed, and the positioning treatment effect of the prostate ablation device is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field, and more particularly, to a prostate ablation device. Background Art

[0002] Histologically, the incidence of benign prostatic hyperplasia (BPH) increases with age. As men age, the prostate enlarges, becoming a significant health concern for men. While traditional treatments, such as medication and surgery, can alleviate the condition to some extent, they also pose significant side effects, high recurrence rates, and slow postoperative recovery.

[0003] Existing minimally invasive prostate treatments primarily include microwave ablation, radiofrequency ablation, cryoablation, and thermal steam ablation. However, these treatments also have side effects, such as urethral damage, urethral stenosis, and severe postoperative pain. Overall, existing prostate ablation devices offer limited positioning of the ablation needle, making it difficult to ensure precise insertion of the ablation needle, resulting in poor positioning and treatment effectiveness. Utility Model Content

[0004] In view of this, the present application provides a prostate ablation device to solve the technical problem of poor positioning treatment effect in the prostate ablation device in the prior art.

[0005] The present application provides a prostate ablation device, comprising:

[0006] A catheter, wherein a needle exit cavity is defined in the catheter, and the needle exit cavity is connected to a needle exit port defined at a distal end of the catheter;

[0007] an ablation needle, the ablation needle being movably disposed in the needle exit cavity, the ablation needle being capable of extending from the needle exit port through the catheter or retracting into the needle exit port of the catheter;

[0008] a water bag, the water bag being arranged at the distal end of the catheter;

[0009] an ultrasound probe, the ultrasound probe being arranged on the catheter and located in the water bag;

[0010] A camera is disposed on the catheter and adjacent to the ablation needle.

[0011] In the prostate ablation device provided by the present application, since two monitoring devices, an ultrasound probe and a camera, are provided at the same time, and the ultrasound probe is located in the water bag, on the one hand, the prostate condition can be provided in real time through ultrasound, which is convenient for the insertion and positioning of the ablation needle, and the sound waves pass through the liquid in the water bag as a conductive medium, which can make the obtained ultrasound image clearer. On the other hand, the camera can provide real-time visual conditions in the urethra. Therefore, the prostate ablation device of the present application can more accurately position the ablation needle under the dual cooperation of the ultrasound probe and the camera, and well ensure the insertion accuracy of the ablation needle, which greatly improves the positioning treatment effect of the prostate ablation device.

[0012] Furthermore, the camera is arranged between the water bag and the needle outlet.

[0013] The camera is arranged between the water bag and the needle outlet to prevent the ablation needle from affecting the camera's field of view.

[0014] Furthermore, the camera is arranged inside the catheter, and a camera wire channel is formed in the catheter. The prostate ablation device includes a camera connecting pipeline arranged in the camera wire channel, one end of the camera connecting pipeline is connected to the camera, and the other end of the camera connecting pipeline extends out of the proximal end of the catheter.

[0015] Among them, since a special camera wire passage is set for the camera connecting pipeline in the catheter, interference between the camera connecting pipeline and other pipelines can be avoided, ensuring the normal and stable operation of the camera and the normal and stable operation of other devices or components.

[0016] Furthermore, the camera is arranged on the outer wall of the catheter, and the prostate ablation device includes a transparent protective layer, and the transparent protective layer and the outer wall of the catheter together form a closed space for accommodating the camera.

[0017] Among them, the transparent protective layer needs to use skin-friendly materials such as silicone, so as to prevent the camera from scratching the urethra and reduce the foreign body sensation during the operation.

[0018] Furthermore, a water injection channel is provided in the catheter, one end of the water injection channel leads to the water bag, and the other end of the water injection channel passes through the distal end of the catheter to form a water injection hole;

[0019] An ultrasound probe wire passage is formed in the catheter, and the prostate ablation device includes an ultrasound probe connecting pipeline arranged in the ultrasound probe wire passage, one end of the ultrasound probe connecting pipeline is connected to the ultrasound probe, and the other end of the ultrasound probe connecting pipeline extends out of the distal end of the catheter.

[0020] Among them, a special water injection channel is set in the catheter to facilitate the water bag injection operation, and the water injection process will not affect other components in the catheter. In addition, a special ultrasound probe wire channel is set for the ultrasound probe connection pipeline in the catheter, which can avoid interference between the ultrasound probe connection pipeline and other pipelines, ensuring the normal and stable operation of the ultrasound probe and the normal and stable operation of other devices or components.

[0021] Furthermore, the prostate ablation device includes a positioning balloon and a trachea, the positioning balloon is arranged on the side of the water balloon away from the catheter, the trachea is arranged in the catheter, one end of the trachea leads to the interior of the positioning balloon, the other end of the trachea is located at the second end of the catheter, the second end of the catheter is provided with an air port connected to the outside world, and the other end of the trachea leads to the air port.

[0022] Among them, when the positioning balloon completely enters the bladder, gas is introduced into the positioning balloon through the trachea to inflate the positioning balloon. In this way, on the one hand, the positioning balloon can be stuck at the neck of the prostate, so that the catheter is positioned; on the other hand, when the positioning balloon is stuck at the neck of the prostate, it can block the urethral opening, so that urine does not flow out of the urethra, and the catheter is introduced from the catheter hole at the distal end of the catheter and finally flows out, thereby reducing the impact of urine on the treatment.

[0023] Furthermore, the water balloon is located between the positioning balloon and the needle outlet, and along the proximal to distal direction of the catheter, the needle outlet, the camera, the water balloon, and the positioning balloon are arranged in sequence.

[0024] The sequential arrangement of the needle outlet, the camera, the water balloon, and the positioning balloon makes the spatial layout of the prostate ablation device compact and reasonable, and the sequentially arranged components (structures) do not interfere with each other.

[0025] Furthermore, the needle exit port is arranged on the circumferential side wall of the catheter, the ablation needle exits from the circumferential side wall of the catheter, and the radius of the water bag is ≤ the distance L between the water bag and the needle exit port × tanθ, wherein θ is the angle of the ablation needle with respect to the axis of the catheter when it exits from the circumferential side wall of the catheter.

[0026] Among them, such a needle withdrawal angle design prevents the ablation needle from poking the water bag after withdrawal, ensuring that the water bag will not be disturbed or damaged by the ablation needle withdrawal.

[0027] Furthermore, a plurality of ablation needles are provided, and the plurality of ablation needles are evenly arranged along the circumference of the catheter.

[0028] Among them, since there are multiple ablation needles, multi-polar ablation treatment can be provided, and the prerequisite for multi-polar independent ablation treatment is provided. The multiple ablation needles are evenly arranged along the circumference of the catheter, making the space and layout in the catheter reasonable and compact, thereby improving the space utilization and the regularity of the space components.

[0029] Furthermore, the prostate ablation device includes an inclined guide tube, which is arranged in the needle exit cavity, and one end of the inclined guide tube is flush with the needle exit port or located inside the needle exit port.

[0030] Among them, the inclined guide tube can provide a suitable angle guide for the ablation needle during puncture and ablation, thereby preventing the ablation needle from poking other components when the ablation needle is removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 This is a three-dimensional view of the ablation device in the prostate ablation system of the present application, wherein the ablation needle does not extend out of the needle lumen;

[0033] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0034] Figure 3 A cross-sectional view of a catheter in an ablation device in a prostate ablation system of the present application;

[0035] Figure 4 This is a partial perspective view of the ablation device in the prostate ablation system of the present application, omitting the catheter;

[0036] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0037] Figure 6 A perspective view of the ablation device in the prostate ablation system of the present application, wherein the ablation needle extends out of the needle lumen;

[0038] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0039] Figure 8 This is a partial view of the ablation needle exit angle in the prostate ablation system of the present application.

[0040] Description of Figure Numbers:

[0041] 7-ablation needle; 20-positioning balloon; 21-water balloon; 22-ultrasound probe; 23-camera; 100-catheter; 101-needle outlet cavity; 102-needle outlet port; 103-camera wire passage; 104-water injection channel; 105-ultrasound probe wire passage; 200-operating mechanism; 201-operating support body; 202-long strip accommodating groove; 203-slide button; 204-first tooth-shaped portion; 205-second tooth-shaped portion; 206-traction member; 207-guide groove; 208-liquid injection port; 209-electrical connection line; 210-electrical connection plug; 212-urinary catheter port; 213-detachable joint; 214-gas injection pipe port; 214-water injection pipe port; 300-inclined guide tube. DETAILED DESCRIPTION

[0042] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings provide exemplary embodiments of the present application to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that the present application can be implemented in a variety of different forms and is not limited to the embodiments described below.

[0043] The same or similar numbers in the drawings of this application correspond to the same or similar parts; in the description of this application, it should be understood that if there are terms such as "up", "down", "left", "right", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, scheme B, or schemes in which A and B are satisfied at the same time.

[0045] In addition, the definition of "proximal end" and "distal end" in this application is: the end of the relevant component (such as a catheter) close to the operating mechanism is the proximal end, and the end of the relevant component (such as a catheter) close to the needle tip of the ablation needle is the distal end.

[0046] It should be noted that the positioning of the ablation needle in the prostate ablation device in the prior art usually adopts either a camera or an ultrasound probe, and the positioning effect is average. It is also difficult to ensure the insertion accuracy of the ablation needle, resulting in poor positioning treatment effect of the prostate ablation device. However, the prostate ablation device of the present application is equipped with two monitoring devices, an ultrasound probe and a camera. Under the dual cooperation of the ultrasound probe and the camera, it can more accurately position the ablation needle, well ensure the insertion accuracy of the ablation needle, and greatly improve the positioning treatment effect of the prostate ablation device.

[0047] See also Figures 1 to 4 、 Figure 6 and Figure 7 The present invention provides a prostate ablation device, comprising:

[0048] A catheter 100 is provided with a needle exit lumen 101 therein, the needle exit lumen 101 being in communication with a needle exit port 102 provided at a distal end of the catheter 100;

[0049] The ablation needle 7 is movably disposed in the needle exit cavity 101 and can extend from the catheter 100 through the needle exit port 102 or retract into the catheter 100;

[0050] The water bag 21 is provided at the distal end of the catheter 100;

[0051] An ultrasonic probe 22 is provided on the catheter 100 and is located in the water bag 21;

[0052] The camera 23 is disposed on the catheter 100 and adjacent to the ablation needle 7 .

[0053] In the prostate ablation device provided in the embodiment of the present application, two monitoring devices, an ultrasound probe 22 and a camera 23, are provided at the same time, and the ultrasound probe 22 is located in the water bag 21. On the one hand, it can provide real-time prostate conditions through ultrasound, which is convenient for the insertion and positioning of the ablation needle 7. The sound waves pass through the liquid in the water bag 21 as a conductive medium, which can make the obtained ultrasound image clearer. On the other hand, it can provide real-time visual conditions in the urethra through the camera 23. Therefore, the prostate ablation device of the present application can more accurately position the ablation needle 7 under the dual cooperation of the ultrasound probe 22 and the camera 23, and well ensure the insertion accuracy of the ablation needle 7, greatly improving the positioning treatment effect of the prostate ablation device.

[0054] See also Figure 2 According to a preferred embodiment of the present application, the camera 23 is arranged between the water bag 21 and the needle outlet 102 to prevent the ablation needle 7 from affecting the field of view of the camera 23 when it is removed.

[0055] See also Figure 1However, as another embodiment, the prostate ablation device further includes an operating mechanism 200, the operating mechanism 200 includes an external electrical connection line 209, the ultrasound probe 22 and the camera 23 are both electrically connected to the external electrical connection line 209, the proximal end of the catheter 100 is connected to the operating mechanism 200, and the camera 23 can also be arranged between the needle outlet 102 and the operating mechanism 200.

[0056] In addition, the prostate ablation device includes a positioning balloon 20 and a trachea (not shown). The positioning balloon 20 is arranged on the side of the water balloon 21 away from the catheter 100. The trachea is arranged in the catheter 100. One end of the trachea leads to the interior of the positioning balloon 20, and the other end of the trachea is located at the second end of the catheter 100. The second end of the catheter 100 is provided with an air port connected to the outside world, and the other end of the trachea leads to the air port.

[0057] See also Figure 1 and Figure 2 According to one embodiment of the present application, the water balloon 21 is located between the positioning balloon 20 and the needle outlet 102, and along the proximal to distal direction of the catheter 100, the needle outlet 102, the camera 23, the water balloon 21, and the positioning balloon 20 are arranged in sequence.

[0058] See also Figure 3 According to one embodiment of the present application, the camera 23 is arranged inside the catheter 100, and a camera wire channel 103 is formed in the catheter 100. The prostate ablation device includes a camera connecting pipeline 24 arranged in the camera wire channel 103, one end of the camera connecting pipeline 24 is connected to the camera 23, and the other end of the camera connecting pipeline 24 extends out of the proximal end of the catheter 100.

[0059] According to another embodiment of the present application, the camera 23 is disposed on the outer wall of the catheter 100 , and the prostate ablation device includes a transparent protective layer, which together with the outer wall of the catheter 100 forms a closed space for accommodating the camera 23 .

[0060] See also Figure 3 According to a specific embodiment of the present application, a water injection channel 104 is provided in the catheter 100, one end of the water injection channel 104 leads to the water bag 21, and the other end of the water injection channel 104 passes through the distal end of the catheter 100 to form a water injection hole;

[0061] An ultrasound probe wire channel 105 is formed in the catheter 100. The prostate ablation device includes an ultrasound probe connecting pipeline (not shown) arranged in the ultrasound probe wire channel 105. One end of the ultrasound probe connecting pipeline is connected to the ultrasound probe 22, and the other end of the ultrasound probe connecting pipeline extends out of the distal end of the catheter 100.

[0062] See also Figure 1 、 Figure 3 and Figure 6According to one embodiment of the present application, the operation support body 201 is a support shell, the proximal end of the catheter 100 can be connected to the support shell through a detachable joint 213, and the detachable joint 213 can also be provided with a functional structure such as a urinary catheter port 212, and the support shell is preferably in the shape of a handle, such as a gun-shaped handle, etc. The distal end of the catheter 100 can be connected to the positioning balloon 20, and the detachable joint 213 can also be provided with an air injection port 214 and a water injection port 215. The water injection port 215 is connected to the water injection hole of the water injection channel 104, and the water injected through the water injection port 215 can pass through the water injection channel 104. The positioning balloon 20 is completely inserted into the bladder by the positioning balloon 20, and the positioning balloon 20 is filled with air through the positioning balloon 20. On the one hand, the positioning balloon 20 can be stuck at the neck of the prostate, so that the catheter 100 is positioned; on the other hand, when the positioning balloon 20 is stuck at the neck of the prostate, it can block the urethral opening, so that urine does not flow out of the urethra, so that the catheter 100 is introduced into the urethra hole at the distal end of the catheter 100 and finally flows out from the urethral opening 212, thereby reducing the impact of urine on the treatment.

[0063] See also Figure 8 According to a preferred embodiment of the present application, the needle exit port 102 is arranged on the circumferential side wall of the catheter 100, and the ablation needle 7 is exited from the circumferential side wall of the catheter 100. The radius of the water bag 21 is ≤ the distance L×tanθ between the water bag 21 and the needle exit port 102, wherein θ is the angle (i.e., the needle exit angle) of the ablation needle 7 with respect to the axis of the catheter 100 when the ablation needle 7 is exited from the circumferential side wall of the catheter 100. Such a needle exit angle design can prevent the ablation needle 7 from poking the water bag 21 when the ablation needle 7 is exited.

[0064] See also Figure 3 According to one embodiment of the present application, a plurality of ablation needles 7 are provided, and the plurality of ablation needles 7 are evenly arranged along the circumference of the catheter 100, and the number of needle exit cavities 101 is at least equal to the number of ablation needles 7, and each ablation needle 7 is located in the corresponding needle exit cavity 101 one by one.

[0065] See also Figure 5 In addition, the prostate ablation device includes an inclined guide tube 100, which is arranged in the needle exit cavity 101, and one end of the inclined guide tube 100 is flush with the needle exit port 102 or located in the needle exit port 102. The number of inclined guide tubes 300 corresponds to the needle exit cavity 101, and they are arranged one by one in the needle exit cavity 101, and the distal end of the inclined guide tube 300 is flush with or located in the needle exit cavity 101 in the tube. The inclined guide tube 300 extends obliquely in a direction away from the axis of the catheter 100. The inclined guide tube 300 is used to provide a suitable angle guide for the ablation needle 7 during puncture and ablation. Its main material is a corrosion-resistant, super-elastic, and plasticity-resistant alloy memory material, such as nickel titanium.

[0066] The operating mechanism 200 also includes a liquid injection port 208 arranged on the operating support body 201, and an external electrical connection line 209 is also arranged on the support body 201 and is connected to an electrical connection plug 210 at the end. The operating support body 201 is provided with a liquid injection port 208, and the ablation needle 7 has an axially through needle channel, and its needle channel is connected to the liquid delivery component through the liquid injection port 208. Chemical ablative agents such as (alcohol) can be injected into the prostate through the liquid injection port 208 and then through the needle channel of the ablation needle 7. The external electrical connection line 209 can also be electrically connected to the ablation needle 7, and the electrical connection plug 210 can be connected to the control host device of the ablation therapy instrument to facilitate pulse ablation operations or radio frequency ablation operations.

[0067] The above description is only a preferred specific implementation method of the present invention. The protection scope of the present invention is not limited to the embodiments listed above. Any simple change or equivalent replacement of the technical solution that can be obviously obtained by any technician familiar with this technical field within the technical scope disclosed in the present invention falls within the protection scope of the present invention.

Claims

1. A prostate ablation device, characterized in that: include: A catheter, wherein a needle exit cavity is defined in the catheter, and the needle exit cavity is connected to a needle exit port defined at a distal end of the catheter; an ablation needle, the ablation needle being movably disposed in the needle exit cavity, the ablation needle being capable of extending from the needle exit port through the catheter or retracting into the needle exit port of the catheter; a water bag, the water bag being arranged at the distal end of the catheter; an ultrasound probe, the ultrasound probe being arranged on the catheter and located in the water bag; A camera is disposed on the catheter and adjacent to the ablation needle.

2. The prostate ablation device according to claim 1, characterized in that: The camera is arranged between the water bag and the needle outlet.

3. The prostate ablation device according to claim 1, characterized in that: The camera is arranged inside the catheter, and a camera wire channel is formed in the catheter. The prostate ablation device includes a camera connecting pipeline arranged in the camera wire channel, one end of the camera connecting pipeline is connected to the camera, and the other end of the camera connecting pipeline extends out of the proximal end of the catheter.

4. The prostate ablation device according to claim 1, characterized in that: The camera is arranged on the outer wall of the catheter. The prostate ablation device includes a transparent protective layer. The transparent protective layer and the outer wall of the catheter together form a closed space for accommodating the camera.

5. The prostate ablation device according to claim 3, characterized in that: A water injection channel is provided in the catheter, one end of the water injection channel leads to the water bag, and the other end of the water injection channel passes through the distal end of the catheter to form a water injection hole; An ultrasound probe wire passage is formed in the catheter, and the prostate ablation device includes an ultrasound probe connecting pipeline arranged in the ultrasound probe wire passage, one end of the ultrasound probe connecting pipeline is connected to the ultrasound probe, and the other end of the ultrasound probe connecting pipeline extends out of the distal end of the catheter.

6. The prostate ablation device according to any one of claims 1 to 5, characterized in that: The prostate ablation device includes a positioning balloon and a trachea. The positioning balloon is arranged on the side of the water balloon away from the catheter. The trachea is arranged in the catheter. One end of the trachea leads to the interior of the positioning balloon, and the other end of the trachea is located at the second end of the catheter. The second end of the catheter is provided with an air port connected to the outside world, and the other end of the trachea leads to the air port.

7. The prostate ablation device according to any one of claims 1 to 5, characterized in that: The water balloon is located between the positioning balloon and the needle outlet, and along the direction from the proximal end to the distal end of the catheter, the needle outlet, the camera, the water balloon, and the positioning balloon are arranged in sequence.

8. The prostate ablation device according to any one of claims 1 to 5, characterized in that: The needle exit port is arranged on the circumferential side wall of the catheter, the ablation needle exits from the circumferential side wall of the catheter, and the radius of the water bag is ≤ the distance L between the water bag and the needle exit port × tanθ, where θ is the angle between the ablation needle and the axis of the catheter when it exits from the circumferential side wall of the catheter.

9. The prostate ablation device according to any one of claims 1 to 5, characterized in that: There are multiple ablation needles, and the multiple ablation needles are evenly arranged along the circumference of the catheter.

10. The prostate ablation device according to claim 8, characterized in that: The prostate ablation device comprises an inclined guide tube, which is arranged in the needle exit cavity, and one end of the inclined guide tube is flush with the needle exit port or located inside the needle exit port.

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