Superfine-aperture bipolar plasma resectoscope and combined suite

Abstract

The utility model relates to a superfine-caliber bipolar plasma resectoscope and a combined suite. The utility model discloses a superfine-caliber bipolar plasma resectoscope which comprises an inner sheath, an electronic flexible lens, a plasma cutter and an operator, a connector is arranged at one end of the inner sheath and used for being connected with an external water source to inject water into the inner sheath. The electronic flexible lens and the plasma cutter are arranged in the inner sheath in a penetrating mode. According to the ultra-thin-caliber bipolar plasma resectoscope combination suite, the whole design thought is changed, a brand-new prostate bipolar plasma resectoscope structure which can keep the original function of the resectoscope unchanged and reduce the caliber is provided, an outer sheath is innovatively removed, a fistulization assembly is designed in a matched mode, and the structure is simple, convenient and practical. Meanwhile, the inner sheath serves as the outermost layer of the whole novel resectoscope structure, the electronic soft lens is used for replacing a traditional hard eyepiece, the diameter of the resectoscope is further reduced, and finally the diameter of the resectoscope stretching into the urethra can reach Fr6-Fr18.

Description

Technical Field

[0001] This utility model relates to the field of plasma electrosurgical resection technology, and in particular to an ultra-fine diameter bipolar plasma electrosurgical resection instrument and its assembly kit. Background Technology

[0002] Benign prostatic hyperplasia (BPH) surgery is primarily performed using a transurethral resection of the prostate (TURP). Currently, the standard diameter TURP endoscope on the market is Fr26, which is not entirely suitable for the narrower urethra of some Chinese individuals. The components of a bipolar plasma resection endoscope generally include an inner sheath, outer sheath, endoscope, manipulator, and obturator. Currently, smaller diameter TURP endoscopes such as Fr24 and even Fr20 are available on the market. However, some unresolved issues remain: ① Insertion difficulties remain for patients with narrow urethras, urethral strictures, or pediatric urethras; ② The main structure of traditional resection endoscopes remains unchanged; the reduction in diameter is achieved simply by decreasing precision and sheath thickness. As the diameter decreases, the diameters of the inner and outer sheaths and the accompanying eyepiece must also decrease accordingly, leading to a decrease in the overall support of the endoscope, making it prone to deformation or even breakage. Utility Model Content

[0003] Therefore, it is necessary to provide an ultra-fine diameter bipolar plasma resection instrument and its assembly to address the problem that the aperture of existing bipolar plasma resection instruments is difficult to further reduce.

[0004] An ultra-fine diameter bipolar plasma resectoscope includes an inner sheath, an electronic flexible microscope, a plasma cutter, and an operator.

[0005] One end of the inner sheath is provided with an interface for connecting an external water source to inject water into the inner sheath;

[0006] Both the electronic flexible mirror and the plasma cutter are inserted inside the inner sheath;

[0007] The actuator is located at one end of the inner sheath near the interface and is used to control the extension and retraction of the plasma cutter inside the inner sheath.

[0008] As a preferred example, the electronic flexible microscope includes a display screen; the display screen is detachably connected to the operator and is used to display images captured by the electronic flexible microscope.

[0009] As a preferred example, the operator includes:

[0010] A cannula for inserting an electron flexible microscope; the cannula is inserted inside an inner sheath;

[0011] The slider is slidably mounted on the sleeve and is fixedly connected to the plasma cutter.

[0012] A handle connected to a slider; the handle is used to move the slider on the sleeve in one of the directions.

[0013] A reset assembly, which is used to reset the slider on the sleeve.

[0014] As a preferred example, the outer wall of the sleeve is connected to a retaining ring, which is used to prevent water leakage from the rear end of the inner sheath when the operator is assembled with the inner sheath.

[0015] As a preferred example, the reset component includes:

[0016] Two hinged links; one end of one link is hinged to a sleeve, and one end of the other link is hinged to a slider;

[0017] A torsion spring is mounted on the hinge axis of the two links; the torsion spring is used to reset the included angle between the two links.

[0018] As a preferred example, a limiting ring is connected to the end of the outer wall of the sleeve away from the manipulator; the limiting ring is slidably sleeved with the blade of the plasma cutter.

[0019] As a preferred example, water is injected into the inner sheath using a pressurized water injection method.

[0020] An ultra-fine aperture bipolar plasma resectoscope assembly kit includes an ultra-fine aperture bipolar plasma resectoscope and a stoma tube as described above; the stoma tube is used to drain water injected through the inner sheath from the human body.

[0021] As a preferred example, one end of the stoma tube is configured as a closed portion, and the closed portion can elastically change to change its diameter; the closed portion is provided with multiple filter holes.

[0022] A method for using an ultra-fine aperture bipolar plasma resectoscope assembly kit, comprising the following steps:

[0023] External flushing water is injected into the body through the inner sheath; internal flushing water is drained out of the body through the stoma tube, thus forming a dynamic circulation of flushing water.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. This utility model proposes a novel bipolar plasma resectoscope assembly with an ultra-fine aperture. Through a change in overall design, it presents a completely new structure that maintains the original function of the resectoscope while reducing its aperture. The outer sheath is innovatively removed, and a fistula assembly is designed to create a stable inlet and outlet water system. Simultaneously, the inner sheath is used as the outermost layer of the new resectoscope structure, and a flexible electronic endoscope replaces the traditional rigid eyepiece, further reducing the aperture of the resectoscope. Ultimately, the aperture of the resectoscope inserted into the urethra can reach Fr6 to Fr18, thus achieving the required ultra-fine aperture.

[0026] 2. The bipolar plasma resection mirror proposed in this utility model has been improved through a completely new structure. It can be composed of existing components with sufficient support and strength, rather than reducing the diameter by reducing the thickness and diameter of the components on the basis of the existing bipolar plasma resection mirror structure. Thus, while reducing the diameter of the bipolar plasma resection mirror, the mirror body still has sufficient support and strength, and is not prone to deformation and breakage. Attached Figure Description

[0027] Figure 1 This is a partial structural diagram of the front end of the inner sheath in the embodiment;

[0028] Figure 2 This is a schematic diagram of the operator in the embodiment;

[0029] Figure 3 A schematic diagram of a stoma tube with an elastic sleeve in a stretched shape;

[0030] Figure 4 This is a schematic diagram of the stoma tube in its initial shape.

[0031] In the diagram: 1. Inner sheath; 2. Electron flexible mirror; 3. Plasma cutter; 4. Sleeve; 5. Slider; 6. Handle; 7. Reset assembly; 8. Retaining ring; 9. Hard tube; 10. Elastic sleeve; 11. Display screen. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] 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.

[0036] This embodiment provides an ultra-fine aperture bipolar plasma resectoscope, the main body of which includes only an inner sheath 1, an electron flexible endoscope 2, a plasma cutter 3, and a manipulator. Obviously, compared to traditional resectoscopes, this plasma resectoscope eliminates the outer sheath design, which reduces the aperture by at least 2 Fr units. Figure 1 As shown, the inner sheath 1 can be made of materials such as stainless steel or titanium alloy, ensuring its strength while maintaining good biocompatibility. The front end of the inner sheath 1 is the end that enters the human body. An interface is provided at the rear end of the inner sheath 1. This interface is equipped with a valve for connecting to an external water source, making the interior of the inner sheath 1 a water injection channel, thus achieving the effect of injecting flushing water.

[0037] Both the flexible electronic endoscope 2 and the plasma resection blade 3 are inserted inside the inner sheath 1 during use. The flexible electronic endoscope 2 can be a conventional flexible electronic endoscope 2, which generally includes an insertion section, a front end, a bending section, and an operating section. Existing flexible electronic endoscopes 2 have a bending section that can be manipulated to observe the complex environment inside the human body. The flexible electronic endoscope 2 used in this design can be further optimized. Since bending-related structural designs are not required, some irrelevant structures, such as bending functions, can be removed from the flexible electronic endoscope 2 used in this design. Only the necessary imaging and illumination functions are retained, thereby further reducing the diameter of the flexible electronic endoscope 2, and consequently reducing the overall aperture of the laser resection endoscope. In one embodiment, since the flexible electronic endoscope 2 does not require bending functions, the operating section of the flexible electronic endoscope 2 is directly integrated into a small display screen 11. Please refer to... Figure 2 The operator is equipped with a magnetic base that is detachably connected to the display screen 11. During surgery, the display screen 11 can be directly attached to the magnetic base to display the images captured by the flexible endoscope 2, allowing the operator to easily and intuitively observe the situation at the front end of the laser resection endoscope. This reduces surgical complexity, facilitates surgical procedures, and improves surgical efficiency, thus enabling day surgery and even minor outpatient surgeries. In another embodiment, the rear end of the flexible endoscope 2, which is housed in the inner sheath 1, is connected to a data cable to transmit the image signal captured by the flexible endoscope 2 to the rear-end display device. This dedicated display device for connecting the flexible endoscope 2 is relatively large and not suitable for installation on the operator, but it displays a larger and clearer image, which is beneficial for viewing the images captured by the flexible endoscope 2. The plasma cutter 3 is also a commonly used structure in existing electrosurgical endoscopes, generally including components such as a blade and electrode head, which will not be described in detail here.

[0038] Please refer to Figure 2The actuator is located at the end of the inner sheath 1 near the interface, i.e., at the rear end of the inner sheath 1. It is used to control the extension and retraction of the plasma cutter 3 within the inner sheath 1. In this embodiment, the actuator includes a sleeve 4, a slider 5, a handle 6, and a reset assembly 7. The sleeve 4 is inserted into the inner sheath 1, connecting the actuator to the inner sheath 1. Simultaneously, the flexible electron microscope 2 passes through the sleeve 4 and enters the interior of the inner sheath 1. The slider 5 is slidably mounted on the sleeve 4 and fixed to the plasma cutter 3. The fixing method can be various, such as using a clamp. The handle 6 is connected to the slider 5. By manipulating the handle 6, the slider 5 can be moved along one direction on the sleeve 4. The reset of the slider 5 in the other direction is accomplished by the reset assembly 7. In this way, the user only needs to focus on controlling the movement of the plasma cutter 3 in one direction, without needing to pay attention to the movement of the cutter in the other direction, making it more convenient to use. In this embodiment, the reset assembly 7 includes two hinged connecting rods and a torsion spring. One end of one connecting rod is hinged to the sleeve 4, and the other end of the connecting rod is hinged to the slider 5. A torsion spring is mounted on the hinge axis of the two connecting rods. The torsion of the torsion spring resets the angle between the two connecting rods; its structure and principle are similar to a clothespin. In another embodiment, the reset assembly 7 can also directly use a spring. The spring is sleeved on the sleeve 4, and its two ends are respectively connected between the slider 5 and the protrusions on the sleeve 4. Further, a retaining ring 8 is connected to the side of the outer wall of the sleeve 4 near the slider 5. A sealing ring is provided on the retaining ring 8, whose function is to seal the rear end of the inner sheath 1 when the operator is inserted into it, preventing water from flowing out from the rear end of the inner sheath 1 and forcing water to flow only towards the front end of the inner sheath 1. A limiting ring is also connected to the end of the outer wall of the sleeve 4 away from the operator. Because the plasma cutter is long and slender and needs to reciprocate, a limiting ring is sleeved on the end of the blade of the plasma cutter 3 to prevent the end of the plasma cutter 3 from bending and deviating from its direction during movement, restricting the electrode head of the plasma cutter 3 to move only along the length of the inner sheath 1.

[0039] It is worth mentioning that, in order to reduce the diameter of the electroresection scope, the inner sheath 1 is reduced in diameter as much as possible without affecting its support and strength, after removing the outer sheath. To ensure sufficient water intake for the inner sheath 1, the external water source can be set as a pressurized water source. The pressurized water is then injected into the body through the inner sheath 1, thus ensuring sufficient water intake. This innovative design removes the outer sheath, retaining only the inner sheath 1 for water injection, and uses a stoma tube for drainage, thus forming a complete water cycle. This breaks through the conventional thinking of electroresection scope design (i.e., simply reducing the diameter by decreasing precision and sheath thickness). It achieves this by reducing the diameter of the plasma electroresection scope (the laser resection scope can even reach Fr6~Fr18), while maintaining the original functionality and ensuring that the electroresection scope still possesses strong support and strength.

[0040] In another embodiment, an ultra-fine diameter bipolar plasma resectoscope kit is also proposed, comprising the ultra-fine diameter bipolar plasma resectoscope and a drainage tube as described above. The drainage tube is used to drain water injected into the body via an optical fiber conduit. The drainage function of conventional plasma resectoscopes, which utilizes a water outlet channel between the inner and outer sheaths, is achieved by the drainage tube in this embodiment, which is a prerequisite for the aforementioned plasma resectoscope. The diameter of the drainage tube can be freely designed to meet the drainage requirements of any transurethral surgery. The drainage tube can be an existing drainage tube or the one described in this embodiment. The drainage tube in this embodiment is used in conjunction with a corresponding mandrel. One end of the drainage tube is elastically adjustable. The mandrel is used to extend into the drainage tube and change the shape of the elastic end of the drainage tube. Specifically, as... Figure 3 As shown, the stoma tube includes a rigid tube 9 and an elastic sleeve 10. One end of the elastic sleeve 10 is fixedly connected to the rigid tube 9, and the other end is a closed portion. Multiple filter holes are also provided on the elastic sleeve 10. The shape of the elastic sleeve 10 can elastically change; that is, the elastic sleeve 10 deforms under external force. The mandrel can be inserted into the stoma tube, contacting the elastic sleeve 10 and stretching it to deform it into a conical shape, thus facilitating insertion of the stoma tube into the puncture site in the patient's abdomen. The mandrel can be withdrawn when the elastic sleeve 10 is inserted into the patient's body. When the external force is removed, the elastic sleeve 10 can return to its original shape and size. The initial shape of the elastic sleeve 10 before elastic change can be set as a flat, spherical shape, such as... Figure 4 As shown. The elastic sleeve 10 is placed inside the patient's bladder during use. The diameter of the elastic sleeve 10, after returning to its initial shape, is larger than the diameter of the puncture site, thus preventing the stoma tube from dislodging from the abdominal puncture site. Simultaneously, the end of the stoma tube can be connected to an external tube for drainage. The main body of the top core rod is a straight rod, requiring sufficient strength to stretch and deform the elastic sleeve 10. The end of the top core rod is rounded to prevent it from puncturing the elastic sleeve 10.

[0041] In summary, traditional plasma resectoscopes reduce the overall diameter by simply decreasing the thickness and diameter of their components. This reduction is limited and can easily lead to decreased overall support, deformation, or even breakage, thus presenting limitations. However, the ultra-fine diameter bipolar plasma resectoscope and its assembly proposed in this invention, through a change in overall design, presents a novel plasma resectoscope structure that maintains the original function of the resectoscope while reducing its diameter. It innovatively eliminates the outer sheath and incorporates a fistula assembly to create a stable inlet and outlet water system. Furthermore, by using the inner sheath 1 as the outermost layer of the entire new laser resectoscope structure and replacing the traditional rigid eyepiece with an electronic flexible endoscope 2, the diameter of the resectoscope can be further reduced. The diameter of the resectoscope extending into the urethra can reach Fr6 to Fr18, thereby achieving the required ultra-fine diameter. The plasma resection mirror proposed in this utility model, through a completely new structural improvement, can be constructed using existing commercially available components with sufficient support and strength, rather than reducing the aperture by shrinking the thickness and diameter of the components while keeping the existing plasma resection mirror structure unchanged. This allows the mirror body to still have sufficient support and strength while reducing the aperture of the plasma resection mirror, making it less prone to deformation and breakage.

[0042] In another embodiment, a method for using an ultra-fine aperture bipolar plasma resection instrument kit is also provided, which utilizes the ultra-fine aperture bipolar plasma resection instrument kit as described above. This method includes the following steps:

[0043] External flushing water is injected into the body through the inner sheath 1; internal flushing water is discharged from the body through the stoma tube, thus forming a dynamic circulation of flushing water.

[0044] 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.

[0045] 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 super-fine aperture bipolar plasma electrosurgical resection microscope, characterized in that, It includes an inner sheath (1), an electron flexible mirror (2), a plasma cutter (3), and a manipulator; One end of the inner sheath (1) is provided with an interface for connecting an external water source to inject water into the inner sheath (1); The electronic flexible mirror (2) and the plasma cutter (3) are both installed inside the inner sheath (1); The actuator is located at one end of the inner sheath (1) near the interface and is used to control the extension and retraction of the plasma cutter (3) inside the inner sheath (1).

2. The ultra-fine aperture bipolar plasma electroresection microscope according to claim 1, characterized in that, The electronic flexible mirror includes a display screen (11); the display screen (11) is detachably connected to the operator and is used to display the images captured by the electronic flexible mirror (2).

3. The ultra-fine aperture bipolar plasma resection microscope according to claim 1, characterized in that, The operator includes: A sleeve (4) for inserting an electronic flexible lens (2); the sleeve (4) is inserted inside the inner sheath (1); The slider (5) is slidably mounted on the sleeve (4), and the slider (5) is fixedly connected to the plasma cutter (3); A handle (6) is connected to a slider (5); the handle (6) is used to drive the slider (5) to move along one direction on the sleeve (4); Reset assembly (7) is used to reset the slider (5) on the sleeve (4).

4. The ultra-fine aperture bipolar plasma resection microscope according to claim 3, characterized in that, The outer wall of the sleeve (4) is connected to a retaining ring (8), which is used to prevent water leakage from the rear end of the inner sheath (1) when the operator is assembled with the inner sheath (1).

5. The ultra-fine aperture bipolar plasma resection microscope according to claim 3, characterized in that, The reset component (7) includes: Two connecting rods are hinged to each other; one end of one connecting rod is hinged to the sleeve (4), and one end of the other connecting rod is hinged to the slider (5); A torsion spring is mounted on the hinge axis of the two links; the torsion spring is used to reset the included angle between the two links.

6. The ultra-fine aperture bipolar plasma electroresection microscope according to claim 3, characterized in that, The outer wall of the sleeve (4) is connected to a limiting ring at the end away from the operator; the limiting ring is slidably sleeved with the blade of the plasma cutter (3).

7. The ultra-fine aperture bipolar plasma resection microscope according to claim 1, characterized in that, Water is injected into the inner sheath (1) using a pressurized water injection method.

8. A combination kit for an ultra-fine aperture bipolar plasma electrosurgical resection microscope, characterized in that, It includes an ultra-fine diameter bipolar plasma electrosurgical resectoscope and a fistula tube as described in any one of claims 1 to 7; the fistula tube is used to drain water injected through the inner sheath (1) from the human body.

9. The ultra-fine aperture bipolar plasma electrosurgical resection instrument kit according to claim 8, characterized in that, One end of the stoma tube is configured as a closed section, and the closed section can elastically change to change its diameter; the closed section has multiple filter holes.

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