Disposable ureteroscope guide sheath

Abstract

The utility model discloses a disposable ureteroscope guide sheath which comprises a hose, one end of the hose is communicated with a fixing sleeve, two sets of sliding assemblies are connected in the fixing sleeve in a sliding mode, two sets of steel wire ropes are connected in the hose in a sliding mode, and one end of each steel wire rope is fixedly connected with a fixing piece. According to the disposable ureteroscope guide sheath, through the arrangement of the sliding assembly and the steel wire rope, when the guide sheath is inserted into the urethra, the pull ring is pulled according to the bending degree of the urethra, so that the pull rod drives the steel wire rope to slide in the sliding hole in one side in the hose, the positioning rod slides in the fixing sleeve, and the telescopic spring is stressed to deform; the steel wire rope is pulled to drive the hose to deflect, so that the effect of adjusting the deflection angle of the conical intubation tube is achieved, the situation that the conical intubation tube extrudes the urethra wall and causes urethra injury when the disposable ureteroscope guide sheath is directly inserted into the urethra is prevented, and the adjustability and safety of the disposable ureteroscope guide sheath are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a disposable ureteroscope guide sheath. Background Art

[0002] A disposable ureteroscope guide sheath is a medical device used to introduce a ureteral catheter into the urethra during cystoscopy or surgery. It is usually made of plastic or rubber, with one end sharp to puncture the urethra and bladder, and the other end is used to connect the ureteral catheter. The main purpose of using a disposable ureteroscope guide sheath is to reduce the risk of cross-infection. Since it is disposable, it is brand new each time it is used and will not be used by previous patients, thus avoiding possible infection transmission. A disposable ureteroscope guide sheath is a device used in interventional urological surgery to guide and fix the ureteroscope (also called a nephroscope) into the urethra until it reaches the site of urinary tract lesions. A disposable ureteroscope guide sheath is an important auxiliary tool in urological surgery, which can improve the accuracy and safety of surgical operations and reduce patient discomfort and the incidence of complications.

[0003] The existing disposable ureteroscope guide sheath is not convenient for adjusting the deflection angle of the tapered cannula during actual use. When the cannula is inserted directly into the urethra, the tapered cannula is likely to squeeze the urethral wall, causing urethral damage.

[0004] After searching the existing patents: a disposable sterile ureteral guide sheath (publication number: CN208809280U), including a vortex cavity suction head body, a vortex cavity suction head back cover, a handle, a guide outer sheath, a pressure monitoring hole, a dilator, a suction pipe, a sealing cap, a pressure detection connector, a wristband and a liquid pressure sensing channel. The beneficial effects of the utility model are: reasonable design, easy to implement, easy to operate and use, and can provide real-time feedback on the pressure in the organ cavity to control the flow of perfusion and suction. At the same time, the perfusion and suction flow can be controlled by the main body. The ureteral introduction sheath with real-time pressure detection and suction capabilities, while the guide sheath is working, can always sense the pressure in the organ through the liquid pressure sensing channel, which is convenient for timely adjustment of the pressure during use to prevent excessive pressure in the cavity from causing harm to the patient. Therefore, it is very suitable for promotion and implementation.

[0005] Although the above patent can provide real-time feedback on the pressure in the organ cavity in order to control the flow of perfusion and suction and prevent excessive pressure in the cavity from causing harm to the patient, and is therefore very suitable for promotion and implementation, it is not convenient for offsetting some collision impacts and reducing the pain during the insertion of the guide sheath.

[0006] Therefore, it is necessary to invent a disposable ureteroscope guide sheath to solve the above problems. Utility Model Content

[0007] The technical problems to be solved by the present invention are as follows: to provide a disposable ureteroscope guide sheath which is highly practical, can be simply operated and has a relatively simple structure, thereby solving the problems in the above-mentioned background technology of being inconvenient to adjust the deflection angle of the tapered cannula and being inconvenient to offset some collision impacts.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] A disposable ureteroscope guide sheath comprises a hose, one end of which is connected to a fixed sleeve, two sets of sliding components are slidably connected inside the fixed sleeve, two sets of steel ropes are slidably connected inside the hose, one end of the steel rope is fixedly connected to a fixing plate, the internal thread of the hose is connected to a buffer component, the internal sleeve of the buffer component is sleeved with a guide tube, one end of the guide tube is connected to a tapered cannula, and one end of the fixed sleeve is connected to a cavity tube.

[0010] As a further solution of the present invention: the sliding assembly includes a positioning rod slidably connected to the inside of the fixed sleeve, one end of the positioning rod is fixedly connected to a pull rod, and a telescopic spring is sleeved on the surface of the positioning rod, which facilitates pushing the pull rod to move and recover.

[0011] As a further solution of the present invention: the buffer assembly includes a threaded sleeve threadedly connected to the inside of the hose, one end of the threaded sleeve is fixedly connected to a buffer spring, one end of the buffer spring is fixedly connected to a limiting ring, and the limiting ring facilitates fixing the buffer spring.

[0012] As a further solution of the present invention: one end of the guide tube is fixedly connected to a cover, and one side of the cover is fixedly connected to a support rod, which facilitates pulling the cover.

[0013] As a further solution of the present invention: both sides of the support rod are fixedly connected with bent pieces, and one end of the bent piece is fixedly connected with a clamping rod, which facilitates fixing the cover.

[0014] As a further solution of the present invention: a pull ring is fixedly connected to the top end of the pull rod, and two groups of sliding grooves adapted to the pull rod are opened on the surface of the fixed sleeve, and the sliding grooves facilitate the sliding of the pull rod.

[0015] As a further solution of the present invention: the surface of the fixed sleeve is connected to an external pipe, and the surface of the cavity tube is connected to a negative pressure pipe, which is convenient for connecting to an external negative pressure pump.

[0016] As a further solution of the present invention: the surface of the hose is provided with scale lines, and the interior of the hose is provided with two groups of sliding holes adapted to the steel wire ropes, the sliding holes facilitating the steel wire ropes to slide inside.

[0017] As a further solution of the present invention: a plurality of vent holes are provided on the surface of the hose, and a clamp is fixedly connected to one side of the cavity tube, and the clamp facilitates the insertion of the clamp rod.

[0018] Beneficial effects of the utility model:

[0019] 1. The disposable ureteroscope guide sheath is provided with a sliding component and a steel wire rope. When the guide sheath is inserted into the urethra, the pull ring is pulled according to the curvature of the urethra, so that the pull rod drives the steel wire rope to slide in the sliding hole on one side of the hose, the positioning rod slides in the fixed sleeve, and the telescopic spring is deformed under force. Since the fixing plate is fixed at one end of the hose, the steel wire rope is pulled to drive the hose to deflect, thereby achieving the effect of adjusting the deflection angle of the tapered cannula, preventing the tapered cannula from squeezing the urethral wall when directly inserted into the urethra, causing urethral damage, and improving the adjustability and safety of the disposable ureteroscope guide sheath.

[0020] 2. The disposable ureteroscope guide sheath is provided with a buffer component. When the guide sheath is inserted into the urethra, the tapered cannula will collide with the urethral wall. The impact generated by the collision reaches the buffer spring through the limiting ring on the guide tube, causing the buffer spring to contract under force and generate rebound force. The guide tube slides inside the threaded sleeve, thereby achieving the effect of offsetting part of the collision impact, reducing the pain when inserting the guide sheath, and improving the comfort of using the disposable ureteroscope guide sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the sliding assembly of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the buffer component of the utility model;

[0026] Figure 5 This is a schematic diagram of the clamping rod structure of the utility model.

[0027] In the figure: 1. Hose; 2. Fixed sleeve; 3. Sliding assembly; 301. Positioning rod; 302. Pull rod; 303. Telescopic spring; 4. Steel wire rope; 5. Fixed plate; 6. Buffer assembly; 601. Threaded sleeve; 602. Buffer spring; 603. Limiting ring; 7. Guide tube; 8. Conical cannula; 9. Cavity tube; 10. Cover; 11. Support rod; 12. Bend plate; 13. Clamping rod; 14. Pull ring; 15. External tube; 16. Negative pressure tube; 17. Clamp. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0029] like Figure 1-5 As shown, a disposable ureteroscope guide sheath comprises a hose 1, one end of the hose 1 is connected to a fixed sleeve 2, and two groups of sliding components 3 are slidably connected inside the fixed sleeve 2. By setting the sliding component 3 and the steel wire rope 4, the deflection angle of the tapered cannula 8 can be adjusted to prevent the tapered cannula 8 from squeezing the urethral wall when directly inserted into the urethra, thereby causing urethral damage, thereby improving the adjustability and safety of the disposable ureteroscope guide sheath. The interior of the hose 1 is slidably connected to two groups of steel wire ropes 4, one end of the steel wire rope 4 is fixedly connected to a fixing plate 5, and the internal thread of the hose 1 is connected to a buffer component 6. By setting the buffer component 6, the effect of offsetting part of the collision impact is achieved, reducing the pain when the guide sheath is inserted, and improving the comfort of using the disposable ureteroscope guide sheath. The interior of the buffer component 6 is sleeved with a guide tube 7, one end of the guide tube 7 is connected to the tapered cannula 8, and one end of the fixed sleeve 2 is connected to a cavity tube 9;

[0030] like Figure 3 As shown, the sliding assembly 3 includes a positioning rod 301 slidably connected to the interior of the fixed sleeve 2, one end of the positioning rod 301 is fixedly connected to the pull rod 302, and the surface of the positioning rod 301 is sleeved with a telescopic spring 303. The setting of the telescopic spring 303 plays a role in pushing the pull rod 302 to move and restore;

[0031] like Figure 4 As shown, the buffer assembly 6 includes a threaded sleeve 601 threadedly connected to the inside of the hose 1, one end of the threaded sleeve 601 is fixedly connected to a buffer spring 602, and one end of the buffer spring 602 is fixedly connected to a limit ring 603. The setting of the limit ring 603 plays a role in fixing the buffer spring 602;

[0032] like Figure 5 As shown, one end of the guide tube 7 is fixedly connected to a cover 10, and one side of the cover 10 is fixedly connected to a support rod 11. The support rod 11 is provided to pull the cover 10.

[0033] like Figure 5As shown, both sides of the support rod 11 are fixedly connected with a bent piece 12, and one end of the bent piece 12 is fixedly connected with a clamping rod 13. The setting of the clamping rod 13 plays a role in fixing the cover 10;

[0034] like Figure 3 As shown, the top of the pull rod 302 is fixedly connected with a pull ring 14, and the surface of the fixed sleeve 2 is provided with two sets of sliding grooves adapted to the pull rod 302. The setting of the sliding grooves allows the pull rod 302 to slide.

[0035] like Figure 1 As shown, the surface of the fixed sleeve 2 is connected to an external pipe 15, and the surface of the cavity tube 9 is connected to a negative pressure pipe 16. The negative pressure pipe 16 serves to connect to an external negative pressure pump.

[0036] like Figure 1 As shown, the surface of the hose 1 is provided with scale lines, and the interior of the hose 1 is provided with two sets of sliding holes adapted to the steel wire rope 4. The setting of the sliding holes allows the steel wire rope 4 to slide inside.

[0037] like Figure 1 As shown, a plurality of vent holes are provided on the surface of the hose 1, and a clamp 17 is fixedly connected to one side of the cavity tube 9. The clamp 17 serves to clamp the rod 13.

[0038] The working principle of the present invention is as follows: when the guide sheath is inserted into the urethra, the pull ring 14 is pulled according to the curvature of the urethra, so that the pull rod 302 drives the steel wire rope 4 to slide in the sliding hole on one side of the hose 1, the positioning rod 301 slides in the fixed sleeve 2, and the telescopic spring 303 is deformed under force. Since the fixing plate 5 is fixed at one end of the hose 1, the steel wire rope 4 is pulled to drive the hose 1 to deflect. When the guide sheath is inserted into the urethra, the tapered cannula 8 will collide with the urethral wall, and the impact generated by the collision reaches the buffer spring 602 through the limit ring 603 on the guide tube 7, so that the buffer spring 602 is forced to contract and generate a rebound force, and the guide tube 7 slides inside the threaded sleeve 601.

[0039] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principle of the above-mentioned utility model. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art.

[0040] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable ureteroscope guide sheath, comprising a hose (1), characterized in that: One end of the hose (1) is connected to a fixed sleeve (2), the interior of the fixed sleeve (2) is slidably connected to two groups of sliding components (3), the interior of the hose (1) is slidably connected to two groups of steel ropes (4), one end of the steel rope (4) is fixedly connected to a fixing plate (5), the internal thread of the hose (1) is connected to a buffer component (6), the interior of the buffer component (6) is sleeved with a guide tube (7), one end of the guide tube (7) is connected to a tapered cannula (8), and one end of the fixed sleeve (2) is connected to a cavity tube (9).

2. A disposable ureteroscope guide sheath according to claim 1, characterized in that: The sliding assembly (3) comprises a positioning rod (301) slidably connected to the interior of the fixed sleeve (2), one end of the positioning rod (301) is fixedly connected to a pull rod (302), and a telescopic spring (303) is sleeved on the surface of the positioning rod (301).

3. The disposable ureteroscope guide sheath according to claim 1, characterized in that: The buffer assembly (6) comprises a threaded sleeve (601) threadedly connected to the interior of the hose (1); one end of the threaded sleeve (601) is fixedly connected to a buffer spring (602); and one end of the buffer spring (602) is fixedly connected to a limit ring (603).

4. The disposable ureteroscope introducer sheath according to claim 1, characterized in that: One end of the guide tube (7) is fixedly connected to a cover (10), and one side of the cover (10) is fixedly connected to a support rod (11).

5. The disposable ureteroscope guide sheath according to claim 4, characterized in that: Both sides of the support rod (11) are fixedly connected with bent pieces (12), and one end of the bent piece (12) is fixedly connected with a clamping rod (13).

6. The disposable ureteroscope introducer sheath according to claim 2, characterized in that: The top end of the pull rod (302) is fixedly connected to a pull ring (14), and the surface of the fixed sleeve (2) is provided with two groups of sliding grooves adapted to the pull rod (302).

7. The disposable ureteroscope introducer sheath according to claim 1, characterized in that: The surface of the fixed sleeve (2) is connected to an external pipe (15), and the surface of the cavity tube (9) is connected to a negative pressure pipe (16).

8. The disposable ureteroscope introducer sheath according to claim 1, characterized in that: The surface of the hose (1) is provided with scale lines, and the interior of the hose (1) is provided with two groups of sliding holes adapted to the steel wire rope (4).

9. The disposable ureteroscope introducer sheath according to claim 1, characterized in that: The surface of the hose (1) is provided with a plurality of vent holes, and a clamp (17) is fixedly connected to one side of the cavity tube (9).

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