A combined soft fiber ureteronephroscope

Abstract

The present invention discloses a combined soft fiber ureterorenoscope, comprising a curved portion, the curved portion is connected to an assembly seat through an insertion tube, an inner tube is arranged in the assembly seat, a steel wire is passed through the inner tube, the steel wire is fixedly connected to the curved portion, the other end of the steel wire is sleeved on the outer side of a steel wire sleeve, the steel wire sleeve is sleeved on a sleeve fixed shaft, the sleeve fixed shaft is fixed on a handle seat, a locking mechanism is arranged between the steel wire sleeve and the handle seat, two optical fibers are passed through the interior of the assembly seat, one is an image fiber, one end of the two optical fibers is connected to a joint, the joint is connected to an illumination coupler, the other image fiber is connected to a feeder through a joint, the feeder is connected to a limited position observation eyepiece, and the limited position observation eyepiece is connected to a combined eyepiece. The above structure improves the softness of the nephroscope, facilitates the adjustment of the angle of the curved portion, and improves the maneuverability and flexibility of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of ureterorenoscopes, and in particular relates to a combined soft fiber ureterorenoscope. Background Art

[0002] Urinary tract stones are a common and frequently occurring disease. According to the location of the stones, they can be divided into bladder stones, ureteral stones and kidney stones. In terms of the probability of occurrence, kidney stones account for more than 70%. Stone removal surgery can be divided into: extracorporeal ultrasonic lithotripsy, intracavitary ballistic lithotripsy, percutaneous nephrolithotomy, transurethral ureteral nephrolithotomy, etc. From the perspective of lithotripsy effect, doctor and patient recognition, surgical risks and complication rates, trauma and recovery time, etc., transurethral ureteral nephrolithotomy has certain advantages. Ureteroscopic lithotripsy is being popularized and has become the main treatment for upper urinary tract stones in hospitals.

[0003] Because the human ureter is thin, long and has many bends, the endoscope and the instrument channel must be highly flexible and the head must be able to bend to improve the maneuverability and flexibility of the nephroscope. To this end, we propose a combined soft fiber ureteronephroscope to solve the problems existing in the existing technology. Summary of the invention

[0004] The object of the present invention is to provide a combined soft fiber ureterorenoscope to solve the problem in the above background technology that the human ureter is thin, long and has many bends, so the endoscope and the instrument channel need to have strong softness.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A combined soft fiber ureterorenoscope comprises a curved portion, one end of the curved portion is connected to an insertion tube, the end of the insertion tube away from the curved portion is connected to an assembly seat, the upper end of the assembly seat is fixed with an assembly cover, an inner tube holder is fixed in the assembly seat, an inner tube is fixed in the inner tube holder, a steel wire runs through the inner tube, one end of the steel wire passes through the insertion tube and is fixedly connected to the curved portion, one end of the steel wire away from the curved portion is sleeved on the outside of a steel wire sleeve, and the steel wire sleeve is sleeved on the sleeve fixing The outer side of the shaft, the sleeve fixing shaft is fixed to the inner bottom end of the handle seat, the upper end of the handle seat is fixed with a handle cover by screws, a locking mechanism is arranged between the wire sleeve and the handle seat, two imaging fibers are passed through the interior of the assembly seat, one of the imaging fibers is connected with a connector at the end away from the assembly seat, the connector is connected with a Y-type adapter, the other imaging fiber is also connected with a connector, the connector is connected with a feeder through a conduit, the feeder is connected with a limited observation eyepiece, and the limited observation eyepiece is connected with a combined eyepiece.

[0007] Preferably, the locking mechanism includes an operating key, one end of which is fixedly connected together by a pin and a wire sleeve, one side of the lower end surface of the wire sleeve is tightly connected to a locking screw, the locking screw is threadedly fixed in a locking screw seat, and the locking screw seat is embedded in the bottom end of the handle seat.

[0008] Preferably, a reinforcing tube is sleeved on the outer side of the inner tube, the reinforcing tube is connected to the assembly seat through a first stainless steel tube, and the other end of the reinforcing tube is connected to the handle seat through a second stainless steel tube.

[0009] Preferably, a boss is provided at the lower end of the sleeve fixing shaft, the boss is fixed to the inner bottom end of the handle seat, and the upper end of the boss is in close contact with the lower end of the wire sleeve.

[0010] Preferably, steel wire fixing tubes are fixed on both sides of the inner bottom end of the handle seat, and the steel wire passes through the inside of the steel wire fixing tubes.

[0011] Preferably, one end of the assembly seat close to the insertion tube is connected to a limiting tube, and the insertion tube passes through the interior of the limiting tube.

[0012] Preferably, a slot is provided inside one end of the assembly seat away from the limiting tube, and the inner tube is clamped in the slot.

[0013] Technical effects and advantages of the present invention: Compared with the prior art, the combined soft fiber ureteronephroscope proposed by the present invention has the following advantages:

[0014] 1. The present invention fixes a sleeve fixing shaft at the inner bottom end of the handle seat, and a wire sleeve is sleeved on the outer side of the sleeve fixing shaft. An operating key is fixed on one side of the wire sleeve through a latch. The operating key is pulled by hand, and then the operating key drives the wire sleeve to rotate around the axis of the sleeve fixing shaft. A steel wire is wound around the steel wire sleeve, and then the steel wire is driven to move around the steel wire sleeve, and then the steel wire pulls the bending part to move, and then the bending part bends, so as to achieve observation of different positions;

[0015] 2. The present invention has a locking screw seat embedded in the bottom end of the handle seat, and the locking screw seat is internally threadedly connected to a locking screw. The locking screw is rotated to tighten the wire sleeve, so that the wire sleeve cannot rotate, thereby achieving fixation of the wire sleeve, and then achieving fixation of the steel wire, and then achieving fixation of the bent portion, which is convenient for work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded view of the present invention;

[0017] Figure 2 This is a diagram showing the internal structure of the handle base of the present invention;

[0018] Figure 3 It is a structural diagram of the locking mechanism of the present invention;

[0019] Figure 4 This is a structural diagram of the bottom end of the handle base of the present invention;

[0020] Figure 5 This is a diagram of the internal structure of the assembly seat of the present invention.

[0021] Figure numerals: 1. bending portion; 2. insertion tube; 3. assembly seat; 4. first stainless steel tube; 5. reinforcement tube; 6. second stainless steel tube; 7. handle seat; 8. locking screw; 9. locking screw seat; 10. wire sleeve; 11. operation key; 12. wire fixing tube; 13. handle cover; 14. screw; 15. image fiber; 16. inner tube holder; 17. assembly cover; 18. connector; 19. Y-type adapter; 20. combined eyepiece; 21. limited observation eyepiece; 22. feeder; 23. catheter; 24. inner tube; 25. wire; 26. sleeve fixing shaft; 27. latch; 28. limit tube; 29. ​​slot; 30. boss; 31. locking mechanism. DETAILED DESCRIPTION

[0022] 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] The present invention provides Figure 1-5 A combined soft fiber ureteronephroscope is shown, which comprises at least a bending portion 1, an insertion tube 2, an assembly seat 3, an inner tube 24, a steel wire 25 and a handle seat 7, wherein the handle seat 7 comprises at least a bending portion control mechanism which can control the bending portion 1 at the distal end to bend, move and / or fix.

[0024] The bending portion 1 is made of a flexible material with good biocompatibility, and is located at the front end of the insertion tube 2; the end of the insertion tube 2 away from the bending portion 1 is connected to an assembly seat 3, and an assembly cover 17 is fixed to the upper end of the assembly seat 3. An inner tube holder 16 is fixed in the assembly seat 3, and an inner tube 24 is fixed in the inner tube holder 16. One end of the inner tube 24 is inserted into the insertion tube 2, and a steel wire 25 runs through the interior of the inner tube 24. One end of the steel wire 25 passes through the insertion tube 2 in a straight line and is fixedly connected to the bending portion 1 for pulling the bending portion. The end of the steel wire 25 away from the bending portion 1 is raindrop-shaped and accommodated in the handle seat 7;

[0025] The bending part control mechanism in the handle seat 7 includes a wire sleeve 10, a sleeve fixing shaft 26 and a locking mechanism 31, wherein the steel wire 25 is sleeved on the outside of the wire sleeve 10, the wire sleeve 10 is sleeved on the outside of the sleeve fixing shaft 26, and the sleeve fixing shaft 26 is fixed to the inner bottom end of the handle seat 7; the locking mechanism 31 includes an operation key 11, and the operation key 11 can be moved left and right in the arc-shaped groove at the end of the handle seat 7 to drive the steel wire 25 to move forward or backward around the wire sleeve 10, pulling the bending part 1 to perform various bending movements; the locking mechanism 31 also includes a locking screw 8, and the locking screw 8 is used to tighten and limit the rotation of the wire sleeve 10 from the bottom surface, thereby achieving the fixation of the bending part 1 connected to the end of the steel wire 25.

[0026] Preferably, the insertion tube 2 is made of a hollow rigid material, such as a hollow steel needle.

[0027] Preferably, Figure 5 As shown, one end of the assembly seat 3 close to the insertion tube 2 is connected to the limiting tube 28 , and the insertion tube 2 passes through the inside of the limiting tube 28 .

[0028] By adopting the above technical solution, the setting of the limiting tube 28 can realize the limiting fixation of the insertion tube 2, thereby improving the stability and firmness.

[0029] Preferably, a plurality of slots 29 , for example, no less than four slots, are provided inside one end of the assembly seat 3 away from the limiting tube 28 , and the inner tube 24 is snapped into one of the slots 29 .

[0030] By adopting the above technical solution, the arrangement of the clamping groove 29 realizes the clamping and fixing of the inner tube 24 , thereby improving the firmness of the inner tube 24 in the assembly seat 3 .

[0031] Preferably, Figure 1As shown, two imaging fibers 15 are passed through the interior of the assembly seat 3, which are respectively fixed in corresponding card slots 29, and one end of one imaging fiber 15 away from the assembly seat 3 is connected to a connector 18, and the connector 18 is connected to a Y-type adapter 19 for connecting corresponding auxiliary equipment such as a syringe, etc.; the other imaging fiber 15 is also connected to a connector 18, and the connector 18 is connected to a feeder 22 through a flexible catheter 23, and the feeder 22 is connected to a limited position observation eyepiece 21, and the limited position observation eyepiece 21 is connected to a combined eyepiece 20 for flexible endoscopic observation from the outside.

[0032] Preferably, the inner tube 24 is a flexible material tube, and a rigid reinforcing tube 5 is sleeved on its outer side. The reinforcing tube 5 is connected to the assembly seat 3 through a first stainless steel tube 4, and the other end of the reinforcing tube 5 is connected to the handle seat 7 through a second stainless steel tube 6.

[0033] By adopting the above technical solution, the connection protection of the inner tube 24 is achieved through the first stainless steel tube 4, the second stainless steel tube 6 and the reinforcing tube 5, thereby improving safety.

[0034] Preferably, a handle cover 13 is fixed to the upper end of the handle base 7 via screws 14 .

[0035] Preferably, Figure 1 , 3 As shown in Figure 4, one side of the arc-shaped groove of the wire sleeve 10 close to the end of the handle seat 7 is fixedly connected to the operation key 11 through a pin 27, and the lower end surface of the other side of the wire sleeve 10 is tightly connected to the locking screw 8, and the locking screw 8 is threadedly fixed in the locking screw seat 9, and the locking screw seat 9 is embedded in the bottom end of the handle seat 7.

[0036] By adopting the above technical solution, the locking and loosening between the wire sleeve 10 and the handle seat 7 are realized, thereby realizing the movement and fixation of the wire 25, thereby realizing the control of the bending part 1, and facilitating the work.

[0037] Preferably, Figure 4 As shown, a boss 30 is provided at the lower end of the sleeve fixing shaft 26 , and the boss 30 is fixed to the inner bottom end of the handle seat 7 , and the upper end of the boss 30 is in close contact with the lower end of the wire sleeve 10 .

[0038] By adopting the above technical solution, the setting of the boss 30 enables the lower end of the wire sleeve 10 to contact the boss 30 when the wire sleeve 10 rotates on the sleeve fixing shaft 26, reducing the friction with the bottom end of the handle seat 7, facilitating the rotation of the wire sleeve 10 and saving effort.

[0039] Preferably, Figure 2 and 4As shown, a steel wire fixing tube 12 is fixed on both sides of the inner bottom end of the handle seat 7 , and the steel wire 25 passes through the inside of the steel wire fixing tube 12 .

[0040] By adopting the above technical solution, the setting of the steel wire fixing tube 12 plays the role of limiting the steel wire 25.

[0041] The present invention discloses a combined soft fiber ureterorenoscope, in which a sleeve fixing shaft 26 is fixed at the inner bottom end of a handle seat 7, a steel wire sleeve 10 is sleeved on the outer side of the sleeve fixing shaft 26, and an operation key 11 is fixed on one side of the steel wire sleeve 10 through a latch 27. In order to adapt the nephroscope to the characteristics of the slender and curved ureter and improve the maneuverability and flexibility of the bending of the head of the nephroscope, the operator only needs to manually pull the operation key 11 at the distal end to move left and right in the arc-shaped slot, thereby driving the steel wire sleeve 10 to rotate around the axis of the sleeve fixing shaft 26. Since a steel wire 25 is wound around the steel wire sleeve 10, the steel wire 25 is driven to move around the steel wire sleeve 10, and then the steel wire 25 pulls the bending portion 1 to move. With the help of the combined eyepiece 20, the operator flexibly adjusts the bending portion 1 to perform a suitable bending action, thereby realizing more flexible endoscopic observation of different internal positions (especially the bending position) at different angles.

[0042] After finding a certain observation point, when it is necessary to fix the head of the nephroscope, the operator only needs to turn the locking screw 8 at the bottom end of the handle seat 7 at the distal end to tighten the wire sleeve 10, so that the wire sleeve 10 cannot rotate, thereby fixing the wire 25 on the wire sleeve 10, and then fixing the curved portion 1 pulled by the end of the wire 25, making the work convenient.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined soft fiber ureterorenoscope, comprising a bending portion (1), an insertion tube (2), an assembly seat (3), an inner tube (24), a steel wire (25) and a handle seat (7), characterized in that: The curved portion (1) is made of a flexible material with good biocompatibility and is located at the front end of the insertion tube (2); the end of the insertion tube (2) away from the curved portion (1) is connected to an assembly seat (3); an inner tube holder (16) is fixed inside the assembly seat (3), an inner tube (24) is fixed inside the inner tube holder (16), a steel wire (25) runs through the inner tube (24), one end of the steel wire (25) passes through the insertion tube (2) in a straight line and is fixedly connected to the curved portion (1), and the end of the steel wire (25) away from the curved portion (1) is in a raindrop shape and is accommodated inside the handle seat (7); The handle base (7) is provided with a bending portion control mechanism capable of remotely controlling the bending portion (1), the bending portion control mechanism comprising a steel wire sleeve (10), a sleeve fixing shaft (26) and a locking mechanism (31), wherein the steel wire (25) is sleeved on the outside of the steel wire sleeve (10), the steel wire sleeve (10) is sleeved on the outside of the sleeve fixing shaft (26), and the sleeve fixing shaft (26) is fixed to the inner bottom end of the handle base (7); the locking mechanism (31) comprises an operation key (11 ), the operating key (11) can move left and right in the arc-shaped slot at the end of the handle seat (7) to drive the steel wire (25) to move around the steel wire sleeve (10), pulling the bending portion (1) pulled by the steel wire (25) to perform bending movement; the locking mechanism (31) also includes a locking screw (8), and the locking screw (8) is used to tighten from the bottom surface of the steel wire sleeve (10) and limit its rotation, thereby achieving the fixation of the bending portion (1) pulled by the steel wire (25).

2. The combined soft fiber ureterorenoscope according to claim 1, characterized in that: One end of the assembly seat (3) close to the insertion tube (2) is connected to the limiting tube (28), and the insertion tube (2) passes through the inside of the limiting tube (28).

3. A combined soft fiber ureterorenoscope according to claim 1 or 2, characterized in that: A plurality of slots (29) are provided inside one end of the assembly seat (3) away from the limiting tube (28), and the inner tube (24) is snap-connected in a slot (29).

4. The combined soft fiber ureterorenoscope according to claim 1, characterized in that: Two image fibers (15) are also passed through the interior of the assembly seat (3) and are respectively fixed in corresponding slots (29). One end of one of the image fibers (15) away from the assembly seat (3) is connected to a connector (18), and the connector (18) is connected to a Y-type adapter (19). The other image fiber (15) is also connected to a connector (18), and the connector (18) is connected to a feeder (22) through a conduit (23). The feeder (22) is connected to a limited position observation eyepiece (21), and the limited position observation eyepiece (21) is connected to a combined eyepiece (20).

5. The combined soft fiber ureterorenoscope according to claim 1, characterized in that: The inner tube (24) is a flexible material tube, and a rigid reinforcing tube (5) is sleeved on its outer side. The reinforcing tube (5) is connected to the assembly seat (3) through a first stainless steel tube (4), and the other end of the reinforcing tube (5) is connected to the handle seat (7) through a second stainless steel tube (6).

6. The combined soft fiber ureterorenoscope according to claim 1, characterized in that: One side of the arc-shaped slot of the wire sleeve (10) close to the end of the handle seat (7) is fixedly connected to the operating key (11) through a pin (27), and the lower end surface of the other side of the wire sleeve (10) is tightly connected to the locking screw (8), and the locking screw (8) is threadedly fixed in the locking screw seat (9), and the locking screw seat (9) is embedded in the bottom end of the handle seat (7).

7. A combined soft fiber ureterorenoscope according to any one of claims 1 to 6, characterized in that: The lower end of the sleeve fixing shaft (26) is provided with a boss (30), the boss (30) is fixed to the inner bottom end of the handle seat (7), and the upper end of the boss (30) is in close contact with the lower end of the wire sleeve (10).

8. The combined soft fiber ureterorenoscope according to claim 1, characterized in that: A steel wire fixing tube (12) is fixed on both sides of the inner bottom end of the handle seat (7), and the steel wire (25) passes through the inside of the steel wire fixing tube (12).

9. The combined soft fiber ureterorenoscope according to claim 1, characterized in that: The insertion tube (2) is made of a hollow rigid material.

10. A combined soft fiber ureterorenoscope according to any one of claims 1 to 9, characterized in that: An assembly cover (17) is fixed to the upper end of the assembly base (3); and a handle cover (13) is fixed to the upper end of the handle base (7) via screws (14).

Images