Flexible ureteroscope sheath capable of being contracted and adjusted

Abstract

The utility model relates to the field of flexible ureteroscope sheaths, in particular to a flexible ureteroscope sheath capable of being contracted and adjusted. The flexible ureteroscope sheath is inconvenient to contract and adjust in the use process, the length of the flexible ureteroscope sheath cannot be adjusted according to different lengths of the urethra and the ureter of a patient in the use process, the flexible ureteroscope sheath cannot adapt to physiological structure changes of different patients, and the use convenience of the flexible ureteroscope sheath is reduced; the sheath of the flexible ureteroscope is too long and is not beneficial to surgical operation control, if the sheath is too short, the flexible ureteroscope cannot smoothly reach the joint of the pelvis and the ureter, and the flexible ureteroscope cannot reach the target calculus position of the pelvis and the renal calyx along the sheath, so that the surgical operation fails; meanwhile, due to the fact that the flexible ureteroscope sheath is not matched with the urethra and the ureter in length, potential operative complications such as damage to ureter mucosa by the edge of the far end of the sheath exist; and meanwhile, the flexible ureteroscope sheath cannot be detached after being used, is inconvenient to store, transport and disinfect and is easy to damage, so that the clinical use cost is increased.

Description

Technical Field

[0001] The utility model relates to the field of flexible ureteroscope sheaths, in particular to a flexible ureteroscope sheath with adjustable shrinkage. Background Art

[0002] Clinically, a ureter sheath must be inserted into the ureter before the operation of the flexible ureteroscope, which plays a role in protecting and supporting the ureter. The main functions of the ureter sheath are to protect the ureter from external damage and pressure, and to help the ureter maintain its shape and position, which is beneficial for the flexible ureteroscope to smoothly reach the lithotripsy operation site. The ureter sheath can also reduce the friction and damage during the movement of the flexible ureteroscope, and ensure the smooth flow of urine from the kidney to the bladder. However, during the use of the existing flexible ureteroscope sheaths, most of their structures are relatively fixed and single, which is not convenient for shrinkage adjustment. It is impossible to adjust the length of the sheath according to the different lengths of the patient's urethra and ureter, and it cannot adapt to the physiological structure changes of different patients, reducing the convenience of use of the sheath. If the flexible ureteroscope sheath is too long, it is not conducive to the control of the operation. If the sheath is too short, it cannot smoothly reach the pyeloureteral junction, and the flexible ureteroscope cannot reach the target stone position in the renal pelvis and renal calyces along the sheath, resulting in the failure of the operation. At the same time, because the flexible ureteroscope sheath does not match the lengths of the urethra and ureter, there are potential surgical complications such as damage to the ureteral mucosa at the distal edge of the sheath. At the same time, the flexible ureteroscope sheath cannot be disassembled after use, and its placement volume is too large, which is not convenient for storage, transportation and disinfection, and is prone to damage, increasing the clinical use cost, not conducive to the development of flexible endoscope technology, and reducing the practicability. Summary of the Utility Model

[0003] In order to overcome the problems that during the use of the flexible ureteroscope sheath, the length of the sheath cannot be adjusted according to the different lengths of the patient's urethra and ureter, it cannot adapt to the physiological structure changes of different patients, reducing the convenience of use of the sheath, and most of them cannot be disassembled after use, and the placement volume is too large, which is not convenient for storage, transportation and disinfection, reducing the practicability.

[0004] The technical solution of the utility model is: a flexible ureteroscope sheath with adjustable shrinkage, including an outer sheath tube; it also includes a connection and installation component for facilitating the disassembly and assembly of the flexible ureteroscope sheath; a shrinkage component that can be telescoped to facilitate adjustment according to the lengths of the patient's urethra and ureter. The front end of the outer sheath tube is movably connected with a connection and installation component for connection and installation. A shrinkage component for adjusting and reducing pressure is arranged on the connection and installation component, and the shrinkage component is movably connected to the inside of the outer sheath tube.

[0005] Preferably, the connection and installation component facilitates the disassembly and assembly of the flexible ureteroscope outer sheath. After the use of the flexible ureteroscope outer sheath, by disassembling the connection and installation component, the volume of the flexible ureteroscope outer sheath is reduced, so as to better disinfect and store it. At the same time, the contraction component can be telescoped to facilitate adjustment according to the length of the patient's urethra and ureter, thereby improving the practicability of the flexible ureteroscope outer sheath.

[0006] Preferably, the connection and installation component includes a sealing ring, a first connection head, a mounting head, a rotating screw, a second connection head, a special-shaped connection pipe, and a fixing ring. A sealing ring is sleeved at the front end of the outer sheath tube. When the flexible ureteroscope outer sheath is used, the sealing ring increases the sealing performance of the installation between the outer sheath tube and the first connection head, avoiding the leakage of liquid in the ureter and causing secondary infection to the patient.

[0007] Preferably, a first connection head is arranged at the middle position of the front end of the sealing ring, and internal threads are symmetrically arranged at the center of the inner wall of the first connection head. A mounting head is arranged on the outside of the first connection head, and external threads are symmetrically arranged at the center of the outside of the front end of the mounting head. When the flexible ureteroscope outer sheath is used, the mounting head and the first connection head are threadedly installed.

[0008] Preferably, a rotating screw is arranged on the outside of the mounting head. The front end of the mounting head is threadedly connected to a second connection head, and external threads are symmetrically arranged at the center of the outside of the second connection head.

[0009] Preferably, the front end of the second connection head is threadedly connected to a special-shaped connection pipe, and a fixing ring is arranged at the middle position of the front end of the special-shaped connection pipe. When the flexible ureteroscope outer sheath is used, the fixing ring limits and fixes the ureter to avoid ureter displacement.

[0010] Preferably, the contraction component includes a pressure relief pipe, a pressure relief block, an adjusting rod, a telescopic pipe, and a drainage hole. Pressure relief pipes are arranged at both the left and right ends of the first connection head, and a pressure relief block is sleeved on the outside of the pressure relief pipe.

[0011] Preferably, an adjusting rod is rotatably connected to the left side wall of the pressure relief block, and a telescopic pipe is movably connected to the inside of the outer sheath tube. A number of drainage holes are symmetrically arranged at the center of the surface of the rear end of the telescopic pipe. When the flexible ureteroscope outer sheath is used, rotating the adjusting rod relieves the pressure inside the flexible ureteroscope outer sheath to avoid excessive pressure squeezing the ureter and affecting the urine drainage effect. The drainage holes drain urine.

[0012] 1. The connection and installation components facilitate the disassembly and assembly of the flexible ureteroscope outer sheath. After the use of the flexible ureteroscope outer sheath, by disassembling the connection and installation components, the volume of the flexible ureteroscope outer sheath is reduced, thus better disinfecting and storing it. At the same time, the contraction component can be telescoped to facilitate adjustment according to the lengths of the patient's urethra and ureter, thereby improving the practicability of the flexible ureteroscope outer sheath, solving the defects that the existing flexible ureteroscope outer sheath is inconvenient to contract and adjust, unable to adjust the length of its outer sheath according to the different lengths of the patient's urethra and ureter, and unable to adapt to the physiological structure changes of different patients.

[0013] 2. By assembling the first connection head, installation head, rotating screw, second connection head, special-shaped connection pipe, and fixing ring respectively to use the flexible ureteroscope outer sheath, and disassembling them during disinfection and placement, the volume of the flexible ureteroscope outer sheath is reduced, facilitating the storage and disinfection of the flexible ureteroscope outer sheath, overcoming the problems that the existing flexible ureteroscope outer sheath cannot be disassembled after use, has too large a placement volume and is inconvenient for storage, transportation and disinfection, is prone to damage, increases the clinical use cost, and is not conducive to the development of flexible endoscope technology.

[0014] 3. Through the cooperation between the telescopic tube and the outer sheath tube, the length of the outer sheath tube is adjusted, thus facilitating adjustment according to the lengths of the patient's urethra and ureter. At the same time, different specifications of outer sheath tubes and telescopic tubes can be replaced according to the required specifications of the ureter, improving the practicability of the flexible ureteroscope outer sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shows the first three-dimensional structural schematic diagram of the retractable and adjustable flexible ureteroscope outer sheath of the present utility model;

[0016] Figure 2 Shows the second three-dimensional structural schematic diagram of the retractable and adjustable flexible ureteroscope outer sheath of the present utility model;

[0017] Figure 3 Shows the sectional three-dimensional structural schematic diagram of the retractable and adjustable flexible ureteroscope outer sheath of the present utility model;

[0018] Figure 4 Shows the retractable and adjustable flexible ureteroscope outer sheath of the present utility model Figure 1 Partial A three-dimensional structural schematic diagram.

[0019] Description of the reference numerals: 1. Outer sheath tube; 100. Connection and installation components; 200. Contraction components; 101. Sealing ring; 102. First connection head; 103. Installation head; 104. Rotating screw; 105. Second connection head; 106. Special-shaped connection pipe; 107. Fixing ring; 201. Pressure relief pipe; 202. Pressure relief block; 203. Adjusting rod; 204. Telescopic tube; 205. Drainage hole. Detailed implementation mode

[0020] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Please refer to Figure 1-2 , the present utility model provides an embodiment: a flexible ureteroscope outer sheath that can be telescopically adjusted, including an outer sheath tube 1; further including a connection and installation assembly 100 and a contraction assembly 200. The front end of the outer sheath tube 1 is movably connected to the connection and installation assembly 100 for connection and installation. The connection and installation assembly 100 is provided with a contraction assembly 200 for adjusting and reducing pressure, and the contraction assembly 200 is movably connected to the inside of the outer sheath tube 1; the connection and installation assembly 100 includes a sealing ring 101, a first connection head 102, a mounting head 103, a rotating screw 104, a second connection head 105, a special-shaped connection tube 106, and a fixing ring 107. The front end of the outer sheath tube 1 is sleeved with a sealing ring 101; a first connection head 102 is arranged at the middle position of the front end of the sealing ring 101, and internal threads are symmetrically arranged at the center of the inner wall of the first connection head 102. An outer thread is symmetrically arranged on the outside of the first connection head 102. A mounting head 103 is arranged on the outside of the first connection head 102, and an outer thread is symmetrically arranged on the outside of the front end of the mounting head 103; a rotating screw 104 is arranged on the outside of the mounting head 103. The front end of the mounting head 103 is threadedly connected to a second connection head 105, and an outer thread is symmetrically arranged on the outside of the second connection head 105; the front end of the second connection head 105 is threadedly connected to a special-shaped connection tube 106, and a fixing ring 107 is arranged at the middle position of the front end of the special-shaped connection tube 106. By assembling the first connection head 102, the mounting head 103, the rotating screw 104, the second connection head 105, the special-shaped connection tube 106, and the fixing ring 107 respectively, the flexible ureteroscope outer sheath is used. At the same time, when disinfecting and placing, they are disassembled, thereby reducing the volume of the flexible ureteroscope outer sheath and facilitating the storage and disinfection of the flexible ureteroscope outer sheath; overcoming the problem that the existing flexible ureteroscope outer sheath cannot be disassembled after use, the placement volume is too large and not convenient for storage, transportation and disinfection, it is easy to be damaged, increasing the clinical use cost and being unfavorable to the development of flexible endoscope technology.

[0022] Please refer to Figure 3-4, in this embodiment, the contraction assembly 200 includes a pressure relief pipe 201, a pressure relief block 202, an adjusting rod 203, a telescopic pipe 204, and a drainage hole 205. Pressure relief pipes 201 are provided at both the left and right ends of the first connector 102, and a pressure relief block 202 is sleeved outside the pressure relief pipe 201; an adjusting rod 203 is rotatably connected to the left side wall of the pressure relief block 202, and a telescopic pipe 204 is movably connected inside the outer sheath tube 1. A number of drainage holes 205 are symmetrically arranged on the surface at the rear end of the telescopic pipe 204. Through the cooperation between the telescopic pipe 204 and the outer sheath tube 1, the length of the outer sheath tube 1 is adjusted, so as to facilitate adjustment according to the lengths of the urethra and ureter of the patient. At the same time, different specifications of the outer sheath tube 1 and the telescopic pipe 204 can be replaced according to the required specifications of the ureter, solving the problem that the contraction adjustment of the existing flexible ureteroscope outer sheath is inconvenient and the outer sheath length cannot be adjusted according to

[0023] the different lengths of the urethra and ureter of the patient, and being unable to adapt to the physiological structure changes of different patients; improving the practicability of the flexible ureteroscope outer sheath.

[0024] When working, insert the flexible ureteroscope into the outer sheath. The special-shaped connecting pipe 106 is threadedly connected to the second connector 105, the second connector 105 is threadedly installed on the mounting head 103, and the mounting head 103 is threadedly installed on the first connector 102. Take the lower end of the outer sheath tube 1 with the corresponding size and install the pressure relief pipe 201. The sealing ring 101 increases the sealing performance of the installation between the outer sheath tube 1 and the first connector 102, avoiding the leakage of the liquid in the ureter and causing secondary infection to the patient. At the same time, rotate the rotating screw 104 to limit the flexible ureteroscope in the mounting head 103, avoiding the flexible ureteroscope from shaking and deviating during use. At the same time, adjust the telescopic distance of the telescopic pipe 204 according to the position of the required inspection and diversion, facilitating the improvement of the support for the ureter, and thus increasing the rate of urine flowing smoothly from the kidney to the bladder.

[0025] Through the above steps, the connection and installation assembly 100 facilitates the disassembly and assembly of the flexible ureteroscope outer sheath. After the flexible ureteroscope outer sheath is used, by disassembling the connection and installation assembly 100, the volume of the flexible ureteroscope outer sheath is reduced, so as to better disinfect and store it. At the same time, the contraction assembly 200 can be telescoped, facilitating adjustment according to the lengths of the urethra and ureter of the patient, thereby improving the practicability of the flexible ureteroscope outer sheath.

[0026] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A retractable and adjustable ureteroscope sheath, comprising an outer sheath tube (1); characterized in that: Also included is a connection and installation assembly (100) that facilitates the disassembly and assembly of the outer sheath of the ureteroscope; A contraction component (200) is retractable and can be adjusted according to the length of the patient's urethra and ureter; the connection and installation component (100) used for connection and installation is detachably installed at the front end of the outer sheath tube (1), the contraction component (200) is installed on the connection and installation component (100), and the contraction component (200) is movably connected to the inside of the outer sheath tube (1).

2. The retractable and adjustable ureteroscope sheath according to claim 1, characterized in that: The connection and installation assembly (100) comprises a sealing ring (101), a first connecting head (102), a mounting head (103), a rotating screw (104), a second connecting head (105), a special-shaped connecting tube (106), and a fixing ring (107); the front end of the outer sheath tube (1) is sleeved with the sealing ring (101).

3. The retractable and adjustable ureteroscope sheath according to claim 2, characterized in that: A first connector (102) is arranged at the middle of the front end of the sealing ring (101), and an internal thread is symmetrically arranged on the inner wall of the first connector (102), a mounting head (103) is arranged on the outer side of the first connector (102), and an external thread matching the internal thread on the first connector (102) is symmetrically arranged on the outer side of the front end of the mounting head (103).

4. The retractable and adjustable ureteroscope sheath according to claim 3, characterized in that: A rotating screw (104) is arranged on the outer side of the mounting head (103), a second connecting head (105) is threadedly connected to the front end of the mounting head (103), and external threads are symmetrically arranged on the outer side of the second connecting head (105).

5. The retractable and adjustable ureteroscope sheath according to claim 4, characterized in that: The front end of the second connector (105) is threadedly connected to a special-shaped connecting tube (106), and a fixing ring (107) is provided at the middle position of the front end of the special-shaped connecting tube (106).

6. The retractable and adjustable ureteroscope sheath according to claim 2, characterized in that: The contraction assembly (200) comprises a pressure relief pipe (201), a pressure relief block (202), an adjustment rod (203), a telescopic pipe (204), and a drainage hole (205); the left and right ends of the first connector (102) are both provided with a pressure relief pipe (201); and the outer side of the pressure relief pipe (201) is sleeved with a pressure relief block (202).

7. The retractable and adjustable ureteroscope sheath according to claim 6, characterized in that: An adjusting rod (203) is rotatably connected to the left wall of the pressure relief block (202), a telescopic tube (204) is movably connected inside the outer sheath tube (1), and a plurality of drainage holes (205) are centrally symmetrically arranged on the surface of the rear end of the telescopic tube (204).

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