Disposable electronic ureteroscope insertion end

Abstract

A disposable electronic ureteroscope insertion end is the main key part of the entire soft mirror, including a front end cover made of hard, transparent medical plastic or medical composite material injection molding, a fine diameter hard material to reduce the patient's discomfort and pain, a micro lens, a micro image sensor chip, a working channel, and a micro lighting module are installed in the front end cover, the front end cover and the insertion tube bending part are respectively tightly covered on the front end outer surface of the insertion tube to form a whole, the insertion tube bending part is connected to the insertion tube as a whole, there is a steel wire limit groove on the inner wall of the connection to match the steel wire, and the connection line of the micro image sensor chip and the lighting module is connected to the handle data interface through a cable. The image resolution is high, the heat dissipation design of the ureteroscope device is simplified, the temperature rise of the front end cover surface is effectively reduced, and the production process is further simplified to reduce the production cost. The LED light source of the micro lighting module is directly installed in the transparent front end cover, and the lighting is uniform and bright, which is more convenient for doctors to observe and operate.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to the main key parts of a ureteroscope, a disposable electronic ureteroscope insertion end. Background Art

[0002] At present, many hospitals still use ureteral flexible scopes using fiber endoscope technology. Therefore, under the clinical requirement that the outer diameter cannot be too thick, the ureteral flexible fiber scope has the characteristic of low resolution. At the same time, the bending operation of the front end of the endoscope during the operation can easily lead to fiber breakage of the flexible scope.

[0003] In addition, although there are ureteroscopes with imported electronic endoscope technology, they are expensive and can only be disinfected and reused multiple times, but cannot be used for consecutive surgeries.

[0004] Patent application No. 201510199054.X "Disposable soft ureteral catheter" only provides a catheter whose working part is a soft multi-lumen tube, which solves the problem that the existing soft tube is not flexible and precise in operation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a disposable electronic ureteroscope insertion end, the insertion part has a fine and hard diameter, which can reduce the discomfort and pain of the patient, and has a high image resolution, which is convenient for observation and convenient for doctors' surgical operations and treatments. The heat dissipation design of the entire soft mirror device is simplified, the manufacturing process is further simplified, the manufacturing cost is reduced, and it can be used once to avoid the risk of cross infection.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problem is as follows: the insertion end of a disposable electronic ureteroscope includes a front end outer cover which is injection molded from a hard, transparent medical or medical composite material, and a micro lens, a micro image sensor chip, a working channel, and a micro lighting module are installed in the front end outer cover. The front end outer cover and the bending part of the insertion tube are tightly covered on the entire outer surface of the front end of the insertion tube and connected as a whole. The bending part of the insertion tube is connected to the insertion tube as a whole, and a steel wire limiting groove is provided on the inner wall of the connection to cooperate with the steel wire. The connecting wires of the micro image sensor chip and the LED light source of the micro lighting module are connected to the data interface of the handle through a cable.

[0007] Compared with the prior art, the advantages of the present invention are: the insertion end of the ureteroscope is the main and key part of the entire soft mirror. The front end cover is made of hard and transparent medical plastic or medical composite materials, which replaces the structure and function of the front end of the insertion tube made of medical stainless steel metal, simplifies the heat dissipation design of the entire device, effectively reduces the temperature rise on the surface of the front end cover, and further simplifies the production process to reduce production costs. It is suitable for mass production, and a micro-lighting module LED light source is directly installed in the transparent front end cover to make the lighting uniform and high in brightness, which is more convenient for doctors to observe and operate surgically. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 , a schematic diagram of the structure of the present invention.

[0009] Figure 2 , Figure 1 A-direction view (the cross section of the front end cover is circular in the first scheme).

[0010] Figure 3 , Figure 1 B-B section view.

[0011] Figure 4 , Figure 1 C-C section view.

[0012] Figure 5 , a cross-sectional view of a multi-lumen tube in which the middle and rear sections of the cannula are injection molded from the same material.

[0013] Figure 6 , schematic diagram of the structure of the bending part of the insertion tube.

[0014] Figure 7 , the present invention uses the state reference diagram. DETAILED DESCRIPTION

[0015] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0016] The front end cover 1 is made of medical hard, transparent polymer material by injection molding, and the cross section can be circular or elliptical. Figure 2 The figure shows a circular cross section. In order to shorten the circumference of the cross section as much as possible, the micro lens 1-1, the micro lighting module 1-2, the working channel 1-3, and the micro image sensor chip 1-4 need to be optimally arranged.

[0017] The front end face of the front end cover 1 is a closed arc surface, and there are two through holes in the middle of the arc surface, which match the micro lens 1-1 and the working channel 1-3 respectively. The front end cover 1 directly installs LED light sources packaged in tiny sizes on both sides of the micro lens 1-1 as micro lighting modules 1-2. The number of light sources is two LED lamps, and the light sources are installed in the transparent hard front end cover. The light is uniform and can effectively suppress the temperature rise on the surface of the cover, reducing the design of the heat dissipation structure, making the manufacturing process simpler, and making it easier for doctors to observe, operate and control.

[0018] The French circumference of the cross section of the front end outer cover 1 is in the range of 8.3 to 9.6 Fr.

[0019] The micro lens 1-1 is square, with a size not exceeding 1 mm × 1 mm and a French circumference not exceeding 3.82 Fr. The micro lens is closely attached to the micro image sensor chip 1-4 behind it, with a size not exceeding 1 mm × 1 mm and a French circumference not exceeding 3.82 Fr, and a resolution not less than 160,000 pixels. The lens and chip are designed with the same size and shape to maximize the use of the 160,000 pixels of the sensor chip while maintaining the minimum French circumference of the lens.

[0020] Working channels 1-3 run through the entire ureteroscope insertion tube. The inner diameter is 1.1-1.2 mm, and the French circumference is 3.3-3.6Fr. It allows common surgical instruments such as stone removal baskets and biopsy forceps to pass through and enter the body. It also has the function of spraying water to clean organs, clean dirt, and suction.

[0021] The front end 1-5 of the insertion tube is a sleeve made of stainless steel with both ends open. The front end outer cover 1 uses an inner stop on the inner end and an inner stop on one end of the insertion tube bending portion 2 to be tightly and bonded to the entire outer surface of the front end 1-5 of the insertion tube, completely covering the front end 1-5 of the insertion tube. The front end of the insertion tube plays a role in supporting the front end outer cover 1 and the entire insertion tube 3.

[0022] One end of the two steel wires 16 is welded and fixed to the stainless steel sleeve at the front end 1-5 of the insertion tube, and the other end is connected to the handle steering knob 5. At the connection between the insertion tube bending part 2 and the insertion tube 3, there is a steel wire limiting groove 2-3 that cooperates with the steel wire 16 and positions it. Figure 4 As shown, by simply turning the handle steering knob 5 on the handle 7, the steel wire 16 can be actively bent in both directions, and the bending angle in each direction is in the range of 0 to 275 degrees. Figure 6 As shown, a steel wire may also be placed to achieve active bending in one direction, depending on the needs.

[0023] The insertion tube bending part 2 is made of a snake tube coated with a thin film, and is composed of an active bending tube 2-1 and a passive bending tube 2-2, which can reduce pressure and discomfort in sensitive areas. The insertion tube 3 is made of medical plastic or medical composite material for easy manipulation in the urethra.

[0024] The insertion tube bending part 2 and the insertion tube 3 can also be made of the same material, and a multi-lumen tube can be formed by injection molding with medical plastic or medical composite material at one time, and the working cavities 1-5, the cable cavities 1-6, and the steel wire cavities 1-7 are provided therein. Figure 5 shown.

[0025] The connection lines of the micro image sensor chip 1 - 4 and the micro lighting module 1 - 2 are connected to the handle data interface 8 through the cable 17 .

[0026] The rear end of the insertion tube 3 is connected to the handle 7 through the insertion tube interface 4, the end of the working channel 1-3 is connected to the handle working channel interface 6, the handle 7 is connected to the host 12 through the data line 9, the data line end 10, and the host data interface 11, the host 12 is connected to the monitor 14 and the computer or mobile terminal 15, and there is a host switch 13, such as Figure 7 It will work after the connections shown are made.

Claims

1. A disposable electronic ureteroscope insertion end, characterized in that The front end outer cover (1) is injection-molded from a hard, transparent medical plastic or medical composite material. A micro lens (1-1), a micro lighting module (1-2), a working channel (1-3), and a micro image sensor chip (1-4) are installed in the front end outer cover (1). The front end outer cover (1) and the insertion tube bending part (2) are respectively tightly covered on the entire outer surface of the front end (1-5) of the insertion tube to form a whole. The insertion tube bending part (2) and the insertion tube (3) are connected to form a whole. A steel wire limiting groove (2-3) is provided on the inner wall of the connection to cooperate with the steel wire (16). The connection lines of the micro image sensor chip (1-4) and the LED light source of the micro lighting module (1-2) are connected to the handle data interface (8) through a cable (17). The front end cover (1) has a circular or elliptical cross section, and a French circumference of the cross section is within a range of 8.3 to 9.6 Fr; The front end surface of the front end cover (1) is a closed arc surface, and two through holes are provided in the middle of the arc surface, respectively matching with the micro lens (1-1) and the working channel (1-3). LED light sources packaged in a tiny size are directly installed on both sides of the micro lens (1-1) inside the front end cover (1) as a micro lighting module (1-2), and the number of light sources is two LED lamps; The micro lens (1-1) is square, with a size not exceeding 1 mm×1 mm and a French circumference not exceeding 3.82 Fr; the micro lens is closely attached to a micro image sensor chip (1-4) with a size not exceeding 1 mm×1 mm and a French circumference not exceeding 3.82 Fr and a resolution not less than 160,000 pixels; The working channel (1-3) runs through the entire ureteroscope catheter, and the end is connected to the handle working channel interface (6), with an inner diameter of 1.1 to 1.2 mm and a French circumference of 3.3 to 3.6 Fr; The front end (1-5) of the insertion tube is a sleeve made of stainless steel with both ends open. The front end outer cover (1) is respectively tightly fitted and bonded to the outer surface of the front end (1-5) of the insertion tube with an inner stopper on the inner end and an inner stopper on one end of the insertion tube bending portion (2), so as to completely cover the front end (1-5) of the insertion tube. The front end of the insertion tube plays a role in supporting the front end outer cover (1) and the entire insertion tube (3). One end of the two steel wires (16) is welded and fixed to the stainless steel sleeve at the front end (1-5) of the insertion tube, and the other end is connected to the steering knob (5) of the handle. A steel wire limiting groove (2-3) is provided at the connection between the insertion tube bending part (2) and the insertion tube (3) to cooperate with the steel wire (16) and position it. The steel wire (16) can be actively bent in two directions, and the bending angle in each direction is in the range of 0 to 275 degrees. The insertion tube bending portion (2) is made of a serpentine tube coated with a thin film, and is composed of an active bending tube (2-1) and a passive bending tube (2-2); the insertion tube (3) is a hard portion made of medical plastic or medical composite material.

2. The disposable electronic ureteroscope insertion end according to claim 1, characterized in that The insertion tube bending part (2) and the insertion tube (3) are made of the same material and are injection-molded into a multi-lumen tube using medical plastic or medical composite material at one time, and the tube contains a working cavity, a cable cavity (1-6), and a steel wire cavity (1-7).

Images