Superfine-aperture bipolar plasma resectoscope, combined suite and use method thereof

Abstract

The invention relates to a superfine-caliber bipolar plasma resectoscope, a combined suite and a using method of the combined suite. The invention 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, the 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, the 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] The invention relates to the technical field of plasma resectoscopes, and in particular to an ultra-fine-caliber bipolar plasma resectoscope, a combination kit and a use method thereof. Background Art

[0002] Prostatic hyperplasia surgery is mainly performed through a transurethral prostate resectoscope. The standard caliber transurethral prostate bipolar plasma resectoscope on the market is Fr26, which is not completely suitable for the thin urethra of some Chinese people. The components of a bipolar plasma resectoscope generally include an inner sheath, an outer sheath, an endoscope, a manipulator, an obturator, etc. As of now, there are Fr24 and even Fr20 small-caliber prostate resectoscopes on the market. However, there are still some unresolved problems: ① The surgical insertion problem of some patients with small urethra, urethral stenosis or pediatric urethra cannot be solved; ② The main structure of the traditional resectoscope has not changed, but the purpose of reducing the caliber is achieved simply by reducing the precision and thickness of the sheath. As the caliber becomes thinner, the caliber of the inner and outer sheaths of the resectoscope and the matching eyepiece must be reduced accordingly, resulting in a decrease in the overall support force of the resectoscope, which is easy to deform or even break. Summary of the invention

[0003] Based on this, it is necessary to provide an ultra-fine-caliber bipolar plasma resectoscope, a combination kit and a method of using the same in order to address the problem that the caliber of the existing bipolar plasma resectoscope is difficult to further reduce.

[0004] An ultra-fine-caliber bipolar plasma resectoscope, comprising an inner sheath, an electronic soft mirror, a plasma cutter and an operator;

[0005] One end of the inner sheath is provided with an interface, which is used to connect to an external water source to inject water into the inner sheath;

[0006] The electronic soft mirror and the plasma cutter are both arranged inside the inner sheath;

[0007] The operator is arranged at one end of the inner sheath close to 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 soft mirror includes a display screen; the display screen is detachably connected to the operator, and is used to display the images captured by the electronic soft mirror.

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

[0010] A sleeve, which is used to pass through the electronic soft endoscope; the sleeve is passed through the inner sheath;

[0011] A slider is slidably arranged on the sleeve and is fixedly connected to the plasma cutter;

[0012] A handle connected to the slider; the handle is used to drive the slider to move along one direction on the sleeve;

[0013] The reset assembly is used to reset the slider on the sleeve.

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

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

[0016] Two mutually hinged connecting rods; one end of one of the connecting rods is hinged to the sleeve, and one end of the other connecting rod is hinged to the slider;

[0017] A torsion spring is arranged on the hinge shaft of the two connecting rods; the torsion spring is used to reset the angle between the two connecting rods.

[0018] As a preferred example, an end of the outer wall of the sleeve away from the operator is connected to a limit ring; the limit ring is slidably connected to the knife rod of the plasma cutter.

[0019] As a preferred embodiment, water is injected into the inner sheath by pressurized water injection.

[0020] An ultra-fine-caliber bipolar plasma resectoscope combination kit comprises the ultra-fine-caliber bipolar plasma resectoscope as described above and a fistula tube; the fistula tube is used to discharge water injected through the inner sheath from the human body.

[0021] As a preferred example, one end of the fistula tube is provided as a closed portion, and the closed portion can be elastically changed to change the diameter; a plurality of filter holes are provided on the closed portion.

[0022] A method for using an ultra-fine-caliber bipolar plasma resectoscope assembly kit, which uses the ultra-fine-caliber bipolar plasma resectoscope assembly kit as described above; the method for using comprises the following steps:

[0023] External flushing water is injected into the human body through the inner sheath; the flushing water inside the human body is discharged from the human body through the fistula tube, thus forming a dynamic circulation of flushing water.

[0024] The beneficial effects of the present invention are:

[0025] 1. The ultra-fine-caliber bipolar plasma resectoscope combination kit proposed in the present invention changes the overall design concept and proposes a new prostate bipolar plasma resectoscope structure that can maintain the original function of the resectoscope and reduce the caliber. The outer sheath is innovatively removed, and a fistula component is designed to build a stable water inlet and outlet system. At the same time, the inner sheath is used as the outermost layer of the entire new resectoscope structure, and an electronic soft mirror is used to replace the traditional hard eyepiece to further reduce the caliber of the resectoscope, and finally the caliber of the resectoscope inserted into the urethra can reach Fr6~Fr18, thereby achieving the required ultra-fine caliber.

[0026] 2. The bipolar plasma resectoscope proposed in the present invention can be composed of components that are already available on the market and have sufficient supporting force and strength through the improvement of a completely new structure, rather than reducing the caliber by reducing the thickness and diameter of the components on the basis of the existing bipolar plasma resectoscope structure remaining unchanged. As a result, while reducing the diameter of the bipolar plasma resectoscope, the mirror body still has sufficient supporting force and strength and is not prone to deformation and breakage. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0029] Figure 3 It is a schematic diagram of the structure of the fistula tube with the elastic sleeve in a stretched shape;

[0030] Figure 4 Schematic diagram of the structure of the fistula tube in its initial shape.

[0031] In the figure: inner sheath 1, electronic soft mirror 2, plasma cutter 3, sleeve 4, slide block 5, handle 6, reset assembly 7, retaining ring 8, hard tube 9, elastic sleeve 10, display screen 11. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0036] This embodiment provides an ultra-fine-caliber bipolar plasma resectoscope, the main body of which only includes an inner sheath 1, an electronic soft mirror 2, a plasma cutter 3 and an operator. Obviously, compared with the traditional resectoscope, the plasma resectoscope first removes the outer sheath design, which can at least reduce the resectoscope caliber by 2 Fr units. Figure 1 As shown, the inner sheath 1 can be made of materials such as stainless steel and titanium alloy, and has good bio-tissue compatibility while ensuring its own strength. The front end of the inner sheath 1 is an end for injecting into the human body. An interface is provided at the rear end of the inner sheath 1. A valve is provided on the interface for connecting an external water source, so that the inner sheath 1 becomes a water injection channel, which plays the effect of injecting flushing water.

[0037] The electronic soft mirror 2 and the plasma cutter 3 are both inserted into the inner sheath 1 when in use. Among them, the electronic soft mirror 2 can directly adopt the existing electronic soft mirror 2, which generally includes an insertion part, a front end part, a bending part, an operating part, etc. In order to observe the complex environment inside the human body, the existing electronic soft mirror 2 has a bending part that can manipulate its bending. The electronic soft mirror 2 used in the present design can be further optimized. Since there is no need for bending-related structural design, the electronic soft mirror 2 used in the present design can further remove some irrelevant structures, such as the bending function. Only the necessary shooting and lighting functions are retained, so that the diameter of the electronic soft mirror 2 can be further reduced, and then the overall caliber of the laser resection mirror can be reduced. In one embodiment, since the electronic soft mirror 2 does not require functions such as bending, the operating part of the electronic soft mirror 2 is directly integrated on a small display screen 11. Please refer to Figure 2 , a magnetic base detachably connected to the display screen 11 is provided on the operator. The display screen 11 can be directly adsorbed on the magnetic base during the operation to display the image captured by the electronic soft mirror 2, so that the operator can easily and intuitively observe the situation at the front end of the laser resection mirror, reducing the complexity of the operation, facilitating the operator to perform the operation, and improving the efficiency of the operation, which is conducive to carrying out day surgery and even outpatient minor surgery. In another embodiment, the rear end of the electronic soft mirror 2 inserted in the inner sheath 1 is connected to a data cable to transmit the image signal captured by the electronic soft mirror 2 to the display device at the rear end through the data cable. The display device specially used to connect the electronic soft mirror 2 is large in size and is not suitable for installation on the operator, but the image size it displays is large and clearer, which is conducive to seeing the image captured by the electronic soft mirror 2. The plasma cutter 3 is also a commonly used structure in existing electroresection mirrors, generally including a knife rod, an electrode head and other components, which will not be described in detail here.

[0038] Please refer to Figure 2, the operator is arranged at one end of the inner sheath 1 near the interface, that is, the operator is located at the rear end of the inner sheath 1, which is used to control the plasma cutter 3 to extend and retract in the inner sheath 1. In this embodiment, the operator 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, so that the manipulator is connected to the inner sheath 1, and the electronic soft mirror 2 is inserted into the sleeve 4 and then enters the inner sheath 1. The slider 5 is slidably arranged on the sleeve 4 and fixed with the plasma cutter 3. There are many fixed forms, such as using a clamp. The handle 6 is connected to the slider 5, and the slider 5 can be driven to move in one direction on the sleeve 4 by manipulating the handle 6. As for the reset of the slider 5 to the other direction, it is completed by the reset assembly 7. In this way, the user only needs to focus on controlling the plasma cutter 3 to move in one direction, without paying attention to the movement of the cutter in another direction, which is more convenient to use. In this embodiment, the reset assembly 7 includes two mutually hinged connecting rods and a torsion spring. One end of one of the connecting rods is hinged to the sleeve 4, and the other. One end of the connecting rod is hinged to the slider 5. The torsion spring is arranged on the hinge axis of the two connecting rods. The angle between the two connecting rods is reset by the torsion of the torsion spring, and its structure and principle are similar to those of a clothespin. In another embodiment, the reset component 7 can also directly use a spring. The spring is sleeved on the sleeve 4, and the two ends of the spring are respectively connected between the slider 5 and the protrusions arranged on the sleeve 4. Further, a retaining ring 8 is connected to the side of the outer wall of the sleeve 4 close to the slider 5. A sealing ring is arranged on the retaining ring 8, and its function is that when the operator is inserted into the inner sheath 1 and assembled with it, the retaining ring 8 can seal the rear end of the inner sheath 1 to prevent water from flowing out from the rear end of the inner sheath 1, and force the water to flow out only to the front end of the inner sheath 1. A limiting ring is also connected to one end of the outer wall of the sleeve 4 away from the operator. Because the plasma electric cutter is slender and needs to move back and forth. In order to prevent the end of the plasma cutter 3 from bending and deviating from the direction when moving, the limiting ring is sleeved on the end of the knife rod of the plasma cutter 3, and the electrode head of the plasma cutter 3 can only move along the length direction of the inner sheath 1.

[0039] It is worth mentioning that in order to reduce the caliber of the resectoscope, on the basis of removing the outer sheath, the caliber of the inner sheath 1 is reduced as much as possible without affecting the supporting force and strength. At this time, in order to ensure that the inner sheath 1 has sufficient water intake, the external water source can be set as a pressurized water source. The pressurized water is poured into the human body through the inner sheath 1, thereby ensuring sufficient water intake. This solution creatively removes the outer sheath, retains only the inner sheath 1 for water injection, and cooperates with the use of a fistula tube for drainage, thereby forming a complete water cycle, breaking through the thinking inertia of traditional resectoscope design (i.e., simply reducing the caliber by reducing the precision and thickness of the sheath body), and can reduce the caliber of the plasma resectoscope (the caliber of the laser resectoscope can even reach Fr6~Fr18), while not reducing the original function, so that the overall resectoscope still has strong supporting force and strength.

[0040] In another embodiment, an ultra-fine-caliber bipolar plasma resectoscope combination kit is also proposed, which includes the ultra-fine-caliber bipolar plasma resectoscope and a fistula tube as described above. The fistula tube is used to discharge water injected through the optical fiber tube from the human body. The function of the traditional plasma resectoscope using the water outlet channel between the inner and outer sheaths to drain water is realized by the fistula tube in this embodiment, which is a prerequisite for the implementation of the above-mentioned plasma resectoscope. The caliber of the fistula tube can be freely designed to meet the water outlet requirements in any transurethral surgery. The fistula tube can adopt an existing fistula tube, or the fistula tube in this embodiment. The fistula tube in this embodiment is used in conjunction with a corresponding top core rod. One end of the fistula tube can change elastically. The top core rod is used to extend into the fistula tube and change the shape of the elastic end of the fistula tube. Specifically, Figure 3 As shown, the fistula tube includes a hard tube 9 and an elastic sleeve 10. One end of the elastic sleeve 10 is fixedly connected to the hard tube 9, and the other end is a closed part. The elastic sleeve 10 is also provided with a plurality of filter holes. The shape of the elastic sleeve 10 can be elastically changed. That is, the elastic sleeve 10 is deformed under the action of external force. The top core rod can be inserted into the fistula tube, and the top core rod is inserted into the fistula tube to contact the elastic sleeve 10, and the elastic sleeve 10 is stretched to deform it into a cone shape, thereby facilitating the insertion of the fistula tube into the puncture hole in the patient's abdomen. When the elastic sleeve 10 is extended into the patient's body, the top core rod can be pulled out. 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 the elastic change can be set to a flat sac shape, such as Figure 4 As shown. When in use, the elastic sleeve 10 is located in the patient's bladder. The diameter of the elastic sleeve 10 that has returned to its original shape is larger than the diameter of the puncture hole, thereby preventing the fistula tube from falling off from the puncture hole in the patient's abdomen. At the same time, the end of the fistula tube can be connected to an external pipe to drain water. The main part of the top core rod is a straight rod, which requires a certain strength to stretch the elastic sleeve 10. At the same time, the end of the top core rod is blunted to prevent it from piercing the elastic sleeve 10.

[0041] In summary, the traditional plasma resectoscope only reduces the total caliber by reducing the thickness and diameter of the components. The reduction of its total caliber is limited, and it is easy to cause the overall support force of the resectoscope to decrease, and it is easy to deform or even break, which has limitations. The ultra-fine caliber bipolar plasma resectoscope and its combination kit proposed in the present invention change the overall design concept and propose a new plasma resectoscope structure that can maintain the original function of the resectoscope and reduce the caliber. The outer sheath is innovatively removed, and a fistula component is designed to build a stable water inlet and outlet system. At the same time, the inner sheath 1 is used as the outermost layer of the entire new laser resectoscope structure, and the electronic soft mirror 2 is used to replace the traditional hard eyepiece to further reduce the caliber of the resectoscope. The caliber of the resectoscope extending into the urethra can reach Fr6~Fr18, thereby achieving the required ultra-fine caliber. The plasma resectoscope proposed in the present invention can be composed of components that are already available on the market and have sufficient supporting force and strength through the improvement of a completely new structure, rather than reducing the caliber by reducing the thickness and diameter of the components on the basis of the existing plasma resectoscope structure remaining unchanged. As a result, while reducing the caliber of the plasma resectoscope, the mirror body still has sufficient supporting force and strength and is not prone to deformation and breakage.

[0042] In another embodiment, a method for using an ultra-fine-caliber bipolar plasma resectoscope assembly kit is also provided, which uses the ultra-fine-caliber bipolar plasma resectoscope assembly kit as described above. The method for using includes the following steps:

[0043] External flushing water is injected into the human body through the inner sheath 1; the flushing water in the human body is discharged from the human body through the fistula tube, thereby forming a dynamic circulation of flushing water.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An ultra-fine-caliber bipolar plasma resectoscope, characterized in that: It comprises an inner sheath (1), an electronic soft mirror (2), a plasma cutter (3) and a manipulator; One end of the inner sheath (1) is provided with an interface, which is used to connect to an external water source to inject water into the inner sheath (1); The electronic soft mirror (2) and the plasma cutter (3) are both inserted into the inner sheath (1); The operator is arranged at one end of the inner sheath (1) close to 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-caliber bipolar plasma resectoscope according to claim 1, characterized in that: The electronic soft mirror comprises a display screen (11); the display screen (11) is detachably connected to the operator and is used to display images captured by the electronic soft mirror (2).

3. The ultra-fine-caliber bipolar plasma resectoscope according to claim 1, characterized in that: The operator comprises: A sleeve (4) is used for inserting the electronic soft endoscope (2); the sleeve (4) is inserted into the inner sheath (1); A slider (5) is slidably arranged on the sleeve (4), and the slider (5) is fixedly connected to the plasma cutter (3); A handle (6) connected to the slider (5); the handle (6) is used to drive the slider (5) to move along one direction on the sleeve (4); A reset assembly (7) is used to reset the slider (5) on the sleeve (4).

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

5. The ultra-fine-caliber bipolar plasma resectoscope according to claim 3, characterized in that: The reset component (7) comprises: Two mutually hinged connecting rods; one end of one of the connecting rods is hinged to the sleeve (4), and one end of the other connecting rod is hinged to the slider (5); A torsion spring is arranged on the hinge shaft of the two connecting rods; the torsion spring is used to reset the angle between the two connecting rods.

6. The ultra-fine-caliber bipolar plasma resectoscope according to claim 3, characterized in that: An end of the outer wall of the sleeve (4) away from the operator is connected to a limit ring; the limit ring is slidably sleeved with the knife rod of the plasma cutter (3).

7. The ultra-fine-caliber bipolar plasma resectoscope according to claim 1, characterized in that: The water is injected into the inner sheath (1) by means of pressurized water injection.

8. An ultra-fine-caliber bipolar plasma resectoscope assembly kit, characterized in that: It comprises an ultra-fine-caliber bipolar plasma resectoscope as described in any one of claims 1 to 7 and a fistula tube; the fistula tube is used to discharge water injected through the inner sheath (1) from the human body.

9. The ultra-fine-caliber bipolar plasma resectoscope assembly kit according to claim 8, characterized in that: One end of the fistula tube is arranged as a closing part, and the closing part can be elastically changed to change the diameter; a plurality of filter holes are arranged on the closing part.

10. A method for using an ultra-fine-caliber bipolar plasma resectoscope assembly kit, characterized in that: It uses the ultra-fine-caliber bipolar plasma resectoscope assembly kit as described in claim 8 or 9; the method of use comprises the following steps: External flushing water is injected into the human body through the inner sheath (1); the flushing water in the human body is discharged from the human body through the fistula tube, thereby forming a dynamic circulation of flushing water.

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