Ureteroscope with bendable insertion end

Abstract

The ureteroscope with the bendable insertion end comprises a handle part, an insertion part and a tip bending part, the tip bending part is fixedly connected to the front end of the insertion part, the rear end of the insertion part is fixedly connected with the front end of the handle part, an eyepiece part is arranged above the front portion of the middle end of the handle part, and the eyepiece part is fixedly connected with the front end of the handle part. An operation channel opening valve is arranged below the front portion of the middle end of the handle part, the rear portion of the middle end of the handle part is a handheld area, a tip bending part adjusting mechanism is fixedly installed at the tail end of the handheld area, a water inlet connector is fixedly connected to the bottom of the tip bending part adjusting mechanism, and the side face of the water inlet connector is communicated with a water outlet connector. According to the ureteroscope, the tip bending part adjusting mechanism is additionally arranged on the basis of an existing ureteroscope, the bending angle of the tip bending part which can only be passively bent originally can be actively adjusted through the tip bending part adjusting mechanism, and therefore the problem that according to a traditional passive bending scheme, when the needed bending angle is too large, the bending angle is too large is solved. And large friction is easily generated with the lumen of the patient, so that the patient feels uncomfortable.

Description

Technical Field

[0001] The utility model relates to the technical field of ureteroscopes, in particular to a ureteroscope with a bendable insertion end. Background Art

[0002] A ureteroscope is a medical device used for the diagnosis and treatment of ureteral diseases. Currently available ureteroscopes are often difficult to adjust their angles. For example, patent publication number CN 204520613 U discloses a ureteroscope with a flexible insertion end. This includes a push-button switch for controlling the flow rate in the side channel. This push-button switch not only controls the flow rate of water on the pump side but also controls the flow rate of liquid extracted from the ureteroscope on the negative pressure side. This allows for the removal of turbid fluid and blood clots from the surgical field, helping to clarify the surgical field and reduce renal pressure during surgery. However, the insertion end of this type of ureteroscope often lacks flexibility, making insertion smooth when encountering a curved lumen.

[0003] Existing solutions usually involve installing a softer tip bend at the front end of the insertion end. The tip bend can be passively bent under the action of the inner wall of the lumen at the bend, thereby allowing the ureteroscope to be inserted smoothly. However, when the bending angle of the ureteroscope is too large, this passive bending solution can easily cause greater friction between the tip bend and the patient's lumen during the passive bending process, causing discomfort to the patient. Utility Model Content

[0004] The purpose of the present invention is to address the deficiencies of the existing technology and provide a ureteroscope with a bendable insertion end. By adding a tip bending portion adjustment mechanism to the existing ureteroscope, the tip bending portion, which was originally only capable of passive bending, can be actively adjusted to a bending angle via the tip bending portion adjustment mechanism, thereby solving the problem that in traditional passive bending solutions, when the required bending angle is too large, it is easy to cause great friction with the patient's lumen and cause discomfort to the patient.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A ureteroscope with a bendable insertion end comprises a handle portion, an insertion portion and a tip bending portion, wherein the front end of the insertion portion is fixedly connected to the tip bending portion, and the rear end of the insertion portion is fixedly connected to the front end of the handle portion, an eyepiece portion is provided above the front middle end of the handle portion, and an operating channel opening valve is provided below the front middle end of the handle portion, the rear middle end of the handle portion is a hand gripping area, and a tip bending portion adjustment mechanism is fixedly installed at the end of the hand gripping area, a water inlet joint is fixedly connected to the bottom of the tip bending portion adjustment mechanism, and a water outlet joint is connected to the side of the water inlet joint.

[0007] Specifically, the tip bending part adjustment mechanism includes a U-shaped knob, a rotating shaft, an adjusting disc and a pull rope. The rotating shaft passes through the center of the side of the tip bending part adjustment mechanism and is rotatably installed with the tip bending part adjustment mechanism. The two ends of the rotating shaft located outside the tip bending part adjustment mechanism are respectively fixedly connected to the ends of the two arms of the U-shaped knob. The rotating shaft is located in the middle of the shaft body inside the tip bending part adjustment mechanism and is fixedly installed with an adjusting disc. Connecting ears are symmetrically provided at the upper and lower ends of the adjusting disc, and a connecting hole is opened in the center of the connecting ear. There are two pull ropes in total, one end of the pull rope is fixedly connected to the connecting hole, and the other end of the pull rope passes through the adjustment channels at the upper and lower ends of the handle part and the insertion part in turn, and is fixedly connected to the upper and lower ends of the inner wall surface of the top end of the tip bending part respectively.

[0008] Furthermore, the tip bending portion adjustment mechanism also includes a knob indicator dial, which is fixedly mounted on the two side surfaces of the tip bending portion adjustment mechanism. A circular hole is provided in the center of the knob indicator dial for rotating the rotating shaft. The surface of the knob indicator dial is engraved with an arc line, and the knob indicator dial is printed with "D" and "U" logos at both ends of the arc line respectively.

[0009] Furthermore, an anti-slip sleeve is fixedly installed on the outer surface of the connecting portion of the two arms of the U-shaped knob.

[0010] Preferably, the inner wall surface of the regulating channel is sprayed with a smooth wear-resistant coating.

[0011] Preferably, a grip groove is provided below the grip area.

[0012] Preferably, the pull rope is made of stainless steel.

[0013] In the above technical solution, a light guide fiber bundle, an image conduction fiber bundle and an operation channel are provided inside the tip bending portion. The operation channel is eccentrically arranged relative to the center of the cross section of the tip bending portion. The image conduction fiber bundle is arranged directly above the operation channel. There are two light guide fiber bundles, and the two light guide fiber bundles are symmetrically arranged on both sides of the image conduction fiber bundle. The light guide fiber bundle and the image conduction fiber bundle are connected to the eyepiece portion, and the operation channel is respectively connected to the operation channel opening valve and the water inlet connector.

[0014] Advantages compared to existing technologies:

[0015] 1. The present invention adds a tip bending adjustment mechanism to the existing ureteroscope, so that the tip bending portion that was originally only capable of passive bending can be actively adjusted to a bending angle through the tip bending adjustment mechanism, thereby solving the problem that the traditional passive bending solution is prone to produce large friction with the patient's lumen when the required bending angle is too large, causing discomfort to the patient.

[0016] 2. The adjusting channel of the utility model is sprayed with a smooth wear-resistant coating. The smooth channel can make the pulling process of the pull rope smoother. The wear-resistant coating makes the adjusting channel less likely to be worn by the pull rope, thereby increasing the service life of the ureteroscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a ureteroscope with a bendable insertion end according to the present invention;

[0018] Figure 2 This is a schematic structural diagram of the tip bending portion adjustment mechanism of the present invention;

[0019] Figure 3 This is a front view of the end face of the curved portion at the tip of the present invention;

[0020] Figure 4 It is a cross-sectional view of the tip bending portion of the present invention.

[0021] In the figure: 1. Handle; 2. Insertion; 3. Tip bend; 4. Eyepiece; 5. Operation channel opening valve; 6. Hand grip; 7. Tip bend adjustment mechanism; 8. Water inlet connector; 9. Water outlet connector; 10. U-shaped knob; 11. Rotating shaft; 12. Adjustment disc; 13. Pull rope; 14. Connecting ear; 15. Connecting hole; 16. Adjustment channel; 17. Knob indicator; 18. Curve line; 19. Anti-slip cover; 20. Light guide fiber bundle; 21. Image transmission fiber bundle; 22. Operation channel; 23. Grip. DETAILED DESCRIPTION

[0022] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, the utility model proposes a ureteroscope with a bendable insertion end, comprising a handle portion 1, an insertion portion 2 and a tip bending portion 3, the front end of the insertion portion 2 is fixedly connected to the tip bending portion 3, the rear end of the insertion portion 2 is fixedly connected to the front end of the handle portion 1, an eyepiece portion 4 is provided above the front middle end of the handle portion 1, an operating channel opening valve 5 is provided below the front middle end of the handle portion 1, the rear middle end of the handle portion 1 is a hand gripping area 6, a tip bending portion adjusting mechanism 7 is fixedly installed at the end of the hand gripping area 6, a water inlet connector 8 is fixedly connected to the bottom of the tip bending portion adjusting mechanism 7, and the water inlet connector 8 is connected to a water outlet connector 9 on its side.

[0024] like Figure 2As shown, the tip bending adjustment mechanism 7 includes a U-shaped knob 10, a rotating shaft 11, an adjusting disc 12 and a pull rope 13. The rotating shaft 11 passes through the center of the side of the tip bending adjustment mechanism 7 and is rotatably installed with the tip bending adjustment mechanism 7. The two ends of the rotating shaft 11 located outside the tip bending adjustment mechanism 7 are respectively fixedly connected to the two arm ends of the U-shaped knob 10. The rotating shaft 11 is located in the middle of the shaft body inside the tip bending adjustment mechanism 7 and is fixedly installed with an adjusting disc 12. Connecting ears 14 are symmetrically provided at the upper and lower ends of the adjusting disc 12, and a connecting hole 15 is opened in the center of the connecting ear 14. There are two pull ropes 13, one end of the pull rope 13 is fixedly connected to the connecting hole 15, and the other end of the pull rope 13 passes through the adjustment channels 16 at the upper and lower ends of the handle part 1 and the insertion part 2 in turn, and is fixedly connected to the upper and lower ends of the top inner wall of the tip bending part 3 respectively.

[0025] Specifically, in order to more accurately control the bending angle of the distal bending portion 3 through the U-shaped knob 10, the pull rope 13 should be prevented from swinging in the adjustment channel 16. Therefore, the diameter of the pull rope 13 should be equal to or slightly smaller than the tube diameter of the adjustment channel 16. Under this design, there will be frequent friction between the pull rope 13 and the adjustment channel 16. Therefore, the pull rope 13 in this embodiment is made of stainless steel, and the inner wall surface of the adjustment channel 16 is sprayed with a smooth and wear-resistant coating. This makes the pulling process of the pull rope 13 smoother, and the inner wall surface of the adjustment channel 16 is not easily worn due to frequent friction with the pull rope 13, thereby improving the service life of the ureteroscope.

[0026] Furthermore, in this embodiment, in order to facilitate the doctor to grasp the bending angle of the tip bending portion 3, the tip bending portion adjustment mechanism 7 also includes a knob indicator plate 17, and the knob indicator plate 17 is fixedly installed on the two side surfaces of the tip bending portion adjustment mechanism 7. A circular hole for the rotation of the rotating shaft 11 is opened in the center of the knob indicator plate 17, and an arc line 18 is engraved on the surface of the knob indicator plate 17. The knob indicator plate 17 is printed with "D" and "U" marks at both ends of the arc line 18 respectively; the bending angle of the tip bending portion 3 is marked on the arc line 18, and the "D" and "U" marks are used to indicate the bending direction of the tip bending portion 3.

[0027] Preferably, in order to facilitate the holding of the ureteroscope and the adjustment operation of the U-shaped knob 10, an anti-slip sleeve 19 is fixedly installed on the outer surface of the connecting part of the two arms of the U-shaped knob 10; a grip groove 23 is provided below the hand grip area 6.

[0028] like Figure 3 and Figure 4As shown, the tip bending portion 3 is internally provided with a light guide fiber bundle 20, an image conduction fiber bundle 21 and an operation channel 22. The operation channel 22 is eccentrically arranged relative to the cross-sectional center of the tip bending portion 3. The image conduction fiber bundle 21 is arranged directly above the operation channel 22. There are two light guide fiber bundles 20, which are symmetrically arranged on both sides of the image conduction fiber bundle 21. The light guide fiber bundle 20 and the image conduction fiber bundle 21 are connected to the eyepiece portion 4, and the operation channel 22 is respectively connected to the operation channel opening valve 5 and the water inlet joint 8.

[0029] In this embodiment, active bending adjustment of the tip bending portion 3 is achieved through the tip bending portion adjustment mechanism 7. The specific process is: the medical staff holds the ureteroscope hand grip 6 with four fingers, and presses and pushes the U-shaped knob 10 with the thumb to rotate clockwise or counterclockwise around the axis of the rotating shaft 11, thereby driving the adjustment disk 12 fixed on the internal rotating shaft 11 of the tip bending portion adjustment mechanism 7 to rotate clockwise or counterclockwise. At this time, the two pull ropes 13 connected to the connecting ears 14 at the upper and lower ends of the adjustment disk 12 rotate with the adjustment disk 12, one is pulled out from the adjustment channel 16, and the other is sent into the adjustment channel 16, so that the tip bending portion 3 is bent under the action of the two pull ropes 13, thereby changing the bending angle of the tip bending portion 3, so that the insertion end of the ureteroscope can enter the patient's lumen more smoothly.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A ureteroscope with a bendable insertion end, characterized in that: The invention comprises a handle portion (1), an insertion portion (2) and a tip bending portion (3), wherein the front end of the insertion portion (2) is fixedly connected to the tip bending portion (3), the rear end of the insertion portion (2) is fixedly connected to the front end of the handle portion (1), an eyepiece portion (4) is provided above the front end of the middle end of the handle portion (1), an operation channel opening valve (5) is provided below the front end of the middle end of the handle portion (1), the rear end of the middle end of the handle portion (1) is a hand gripping area (6), a tip bending portion adjusting mechanism (7) is fixedly installed at the end of the hand gripping area (6), a water inlet joint (8) is fixedly connected to the bottom of the tip bending portion adjusting mechanism (7), and a water outlet joint (9) is connected to the side of the water inlet joint (8).

2. A ureteroscope with a bendable insertion end according to claim 1, characterized in that: The tip bending portion adjusting mechanism (7) comprises a U-shaped knob (10), a rotating shaft (11), an adjusting disc (12) and a pull rope (13), wherein the rotating shaft (11) passes through the center of the side of the tip bending portion adjusting mechanism (7) and is rotatably mounted on the tip bending portion adjusting mechanism (7), and the two ends of the rotating shaft (11) located outside the tip bending portion adjusting mechanism (7) are fixedly connected to the ends of the two arms of the U-shaped knob (10) respectively, and the rotating shaft (11) is located in the middle of the shaft body inside the tip bending portion adjusting mechanism (7). An adjusting disc (12) is fixedly installed, and connecting ears (14) are symmetrically provided at the upper and lower ends of the adjusting disc (12). A connecting hole (15) is opened in the center of the connecting ear (14). There are two pull ropes (13), one end of the pull rope (13) is fixedly connected to the connecting hole (15), and the other end of the pull rope (13) passes through the adjusting channels (16) at the upper and lower ends of the handle part (1) and the insertion part (2) in sequence, and is fixedly connected to the upper and lower ends of the inner wall surface of the top end of the tip bending part (3) respectively.

3. The ureteroscope with a bendable insertion end according to claim 2, characterized in that: The tip bending portion adjusting mechanism (7) further comprises a knob indicator plate (17), the knob indicator plate (17) being fixedly mounted on both side surfaces of the tip bending portion adjusting mechanism (7), a circular hole for rotating the rotating shaft (11) being provided at the center of the knob indicator plate (17), a radian line (18) being engraved on the surface of the knob indicator plate (17), and "D" and "U" marks being printed on both ends of the radian line (18), respectively.

4. The ureteroscope with a bendable insertion end according to claim 2, characterized in that: An anti-slip sleeve (19) is fixedly mounted on the outer surface of the connecting portion of the two arms of the U-shaped knob (10).

5. The ureteroscope with a bendable insertion end according to claim 2, characterized in that: The inner wall surface of the regulating channel (16) is sprayed with a smooth wear-resistant coating.

6. The ureteroscope with a bendable insertion end according to claim 1, characterized in that: The tip bending portion (3) is provided with a light guide fiber bundle (20), an image conduction fiber bundle (21) and an operation channel (22). The operation channel (22) is arranged eccentrically relative to the center of the cross section of the tip bending portion (3). The image conduction fiber bundle (21) is arranged directly above the operation channel (22). There are two light guide fiber bundles (20), and the two light guide fiber bundles (20) are symmetrically arranged on both sides of the image conduction fiber bundle (21). The light guide fiber bundle (20) and the image conduction fiber bundle (21) are connected to the eyepiece portion (4). The operation channel (22) is respectively communicated with the operation channel opening valve (5) and the water inlet joint (8).

7. The ureteroscope with a bendable insertion end according to claim 1, characterized in that: A grip groove (23) is provided below the grip area (6).

8. The ureteroscope with a bendable insertion end according to claim 2, characterized in that: The pull rope (13) is made of stainless steel.

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