Hard ureteroscope with scales

Abstract

The utility model discloses a hard ureteroscope with scales, and belongs to the technical field of surgical instruments. The problem that in the process of measuring the position and range of the total lesion part of the ureter with the narrow cavity diameter, an existing ureteroscope provided with a scale sheath deepens and harms the physiological narrow part of the ureter is solved. The device comprises an amplification assembly, a fixed pipe section and an insertion section connected with the fixed pipe section, wherein scales are arranged on the insertion section; the amplifying assembly comprises a fixed ring, a rotating ring, a fixed part, a telescopic part and an amplifier which are connected in sequence; the fixed part, the rotating ring, the fixed ring and the fixed pipe section are sequentially arranged from outside to inside; the rotating ring rotates around the fixed ring; the telescopic piece drives the amplifier to reciprocate in the direction of the long axis of the insertion section. The amplifier is used for amplifying scales. The scales are arranged on the insertion section of the ureteroscope main body, so that the diameter of the insertion section is not increased, and secondary injury to a physiological narrow part when the insertion section is inserted into a ureter is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to a rigid ureteroscope with scales. Background Art

[0002] Ureteroscopy is a commonly used instrument in urological endoscopic surgery, mainly used for the diagnosis and treatment of ureteral lesions. At present, a sheath with a scale is sleeved on the outer circumferential wall of the existing ureteral insertion section, and the sheath enters the ureter together with the insertion section to measure the insertion length of the insertion section. However, the design of the sheath outside the insertion section has the following shortcomings:

[0003] The human ureter has two physiological narrow parts with a diameter of less than 2mm, specifically: the junction of the renal pelvis and the ureter of the bladder wall. The diameter of the commonly used ureteroscope is 2-5mm. Obviously, the ureteral insertion section with a diameter of 2mm is sheathed and inserted into the ureter, which will deepen the damage to the above two physiological narrow parts. Therefore, in the diagnosis and treatment of ureteral stenosis, a rigid ureteroscope with a sheath cannot be used to measure the insertion depth and detect the location and range of the lesion. Utility Model Content

[0004] In view of the above analysis, the utility model aims to provide a rigid ureteroscope with a scale to solve the problem that the existing rigid ureteroscope equipped with a scale sheath further damages the physiological narrow part of the ureter during the measurement of the position and range of the total lesion part of the ureter with a narrow lumen.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] The utility model provides a rigid ureteroscope with scale, comprising: a ureteroscope body and a magnifying component;

[0007] The ureteroscope body includes a fixed tube section and an insertion section connected to the fixed tube section, and the insertion section is provided with scales along the length direction of the insertion section;

[0008] The amplifying assembly comprises a fixed ring, a rotating ring, a fixing part, a telescopic part and an amplifier which are connected in sequence;

[0009] The fixing part, the rotating ring, the fixing ring and the fixing pipe section are arranged in sequence from the outside to the inside;

[0010] The rotating ring can rotate around the fixed ring;

[0011] The telescopic member can drive the amplifier to reciprocate along the direction of the long axis of the insertion section;

[0012] The amplifier is used to enlarge the scale.

[0013] Furthermore, the amplification component also includes a first limiting component;

[0014] The first limiting assembly includes a slide groove, a slider, an adjustment plate, a connecting rod and a tooth plate connected in sequence;

[0015] The slide groove is arranged on the fixing member;

[0016] The fixing ring, the tooth plate and the fixing pipe section are arranged in sequence from outside to inside, and a slot is arranged on the upper surface of the tooth plate.

[0017] Furthermore, the first limiting assembly also includes a spring;

[0018] The slider, the spring and the fixing member are connected in sequence;

[0019] The direction of the long axis of the spring is parallel to the direction of the long axis of the slideway.

[0020] Furthermore, the first limiting component also includes a protrusion;

[0021] The protrusions match the slots;

[0022] The protrusion is arranged on the inner side wall of the fixing ring and a distance is arranged between the protrusion and the outer wall of the fixing pipe section.

[0023] Further, the direction of the long axis of the insertion section is set as the first direction;

[0024] The side where the insertion section is located is the front end; the side where the fixed pipe section is located is the rear end;

[0025] From the front end to the rear end, the fixing ring includes a first connecting section, a second connecting section and a third connecting section arranged in sequence;

[0026] The first connecting section is position-limitedly connected to the fixed pipe section;

[0027] An annular groove is provided on the outer wall surface of the second connecting section;

[0028] A protrusion is arranged on the inner wall surface of the third connecting section.

[0029] Further, the inner diameter of the first connecting section is equal to the outer diameter of the fixed pipe section;

[0030] The protrusions are evenly arranged along the circumferential direction of the inner side wall of the third connecting section.

[0031] Further, the rotating ring includes a second ring body and an annular fixed block;

[0032] The annular fixing block is fixedly connected to the inner side wall of the second ring body and matches the annular groove.

[0033] Furthermore, the amplifying component also includes a second limiting component;

[0034] The fixing ring is connected to the fixing pipe section in a limiting manner through the second limiting assembly.

[0035] Furthermore, the second limiting assembly includes a connecting groove and a limiting connecting piece matching the connecting groove.

[0036] Further, the connection groove is arranged on the outer side wall of the fixed pipe section;

[0037] The limiting connecting piece passes through the fixing ring and is limitedly connected with the connecting groove.

[0038] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0039] 1. Compared with the prior art in which a sheath with scales is placed on the outer sleeve of the insertion section to increase the overall diameter of the entry end of the rigid ureteroscope, the utility model sets scales on the insertion section of the ureteroscope body, which does not increase the diameter of the insertion section and avoids the insertion section from causing further damage to the physiological stenosis during the insertion into the ureter.

[0040] 2. In the prior art, in the process of reading the scale on the outer wall of the sheath, in order to accurately read the scale, the medical staff needs to lower their heads too much, which is easy to destroy the sterile environment and increase the perioperative infection rate. In response to this problem, the utility model designs an amplification component including a fixed ring, a rotating ring, a fixing part, a telescopic part and an amplifier. The fixing ring is fixedly connected to the fixed pipe section through a fixed ring, and the amplification component is fixedly connected to the fixed pipe section as a whole; the rotating ring rotates around the fixed ring to adjust the rotation position of the amplifier in time to ensure that the amplifier is between the human eye and the scale line when reading. The telescopic part drives the amplifier to move back and forth along the length direction of the insertion section, which is conducive to the amplification and clear reading of the scale represented by the exposed scale line on the insertion section. Through the setting of the amplification component, the medical staff can complete the scale reading by adaptively lowering their heads, avoiding excessive lowering of the medical staff, not easily destroying the sterile environment, and reducing the perioperative infection rate.

[0041] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents particularly pointed out in the embodiments of the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0043] Figure 1 is a structural schematic diagram of a rigid ureteroscope with scales according to this embodiment;

[0044] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0045] Figure 3 It is a schematic diagram of the structure after the enlarged component is connected to the fixed pipe section;

[0046] Figure 4 It is a schematic diagram of the structure when the enlarged component is not connected to the fixed pipe section;

[0047] Figure 5 is a schematic diagram of the structure of the fixed ring;

[0048] Figure 6 It is a schematic diagram of the structure after the rotating ring and the first limiting connecting member are separated;

[0049] Figure 7 is a schematic structural diagram of a first limiting component;

[0050] Figure 8 Schematic diagram of the structure of the limit connector

[0051] Fig. 9 for Figure 2 A local enlarged schematic diagram of the middle A;

[0052] Fig.10 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0053] Fig.11 for Figure 2 A partial enlarged schematic diagram of point C in the middle;

[0054] Fig.12 for Figure 2 A partial enlarged schematic diagram of point D in the middle.

[0055] Reference numerals:

[0056] 100-ureteroscope body, 200-magnification component, 300-light guide port, 400-eyepiece, 500-instrument channel entry end;

[0057] 110-fixed pipe section, 120-insertion section;

[0058] 210 - fixed ring, 220 - rotating ring, 230 - first limiting assembly, 240 - fixed part, 250 - telescopic part, 260 - amplifier, 270 - second limiting assembly;

[0059] 211-first connecting section, 212-second connecting section, 213-third connecting section;

[0060] 2111-threaded hole;

[0061] 2121-annular groove;

[0062] 221-ring body, 222-ring fixing block;

[0063] 231-slideway, 232-sliding block, 233-adjusting plate, 234-connecting rod, 235-tooth plate, 236-elastic member, 237-protrusion;

[0064] 271-connecting groove, 272-limiting connecting piece;

[0065] 2721-handle, 2722-threaded section, 2723-connecting section. DETAILED DESCRIPTION

[0066] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0067] In order to explain the rigid ureteroscope with scale in the present invention in detail, the direction of the long axis of the insertion section 120 is set as the first direction; the side where the insertion section 120 is located is the front end; and the side where the fixed tube section 110 is located is the rear end.

[0068] Example

[0069] A specific embodiment of the utility model discloses a rigid ureteroscope with a scale, such as Figure 1 , Figure 2 and Figure 3 As shown, the rigid ureteroscope with scale includes a ureteroscope body 100 and a magnifying assembly 200; the ureteroscope body 100 includes a fixed tube section 110 and an insertion section 120 connected to the fixed tube section 110, and the insertion section 120 is provided with scales along the length direction of the insertion section 120; the magnifying assembly 200 includes a fixed ring 210, a rotating ring 220, a fixing member 240, a telescopic member 250 and an amplifier 260 connected in sequence; the fixing member 240, the rotating ring 220, the fixed ring 210 and the fixed tube section 110 are arranged in sequence from the outside to the inside; the rotating ring 220 can rotate around the fixed ring 210; the telescopic member 250 can drive the amplifier 260 to reciprocate along the direction of the long axis of the insertion section 120; the amplifier 260 is arranged above the insertion section 120 for magnifying the scale, and the scale lines marking the scale are ring-shaped.

[0070] In this embodiment, two telescopic members 250 are provided and are arranged parallel to each other.

[0071] In this embodiment, the fixing ring 210 is detachably connected to the fixing tube section 110. Compared with the prior art in which the insertion section is covered with a sheath with scales, which increases the diameter of the operating end of the rigid ureteroscope that enters the human body, this embodiment sets scales on the insertion section 120 of the ureteroscope body 100, which does not increase the diameter of the insertion section 120, thereby preventing the insertion section 120 from causing further damage to the physiological stenosis during the insertion of the ureter.

[0072] Because the insertion section 120 itself has a small diameter, in the process of reading the scale on the outer wall, the medical staff needs to bow their heads too much for accurate reading, which is easy to destroy the sterile environment and increase the perioperative infection rate. In view of this problem, the utility model designs an amplification component 200 including a fixed ring 210, a rotating ring 220, a fixing member 240, a telescopic member 250 and an amplifier 260. The fixing ring 210 is fixedly connected with the fixed pipe section 110 by the fixed ring 210, and the amplification component 200 is fixedly connected to the fixed pipe section 110 as a whole; the rotating ring 220 rotates around the fixing ring 210 to adjust the rotation position of the amplifier 260 in time, so as to ensure that the amplifier 260 is between the human eye and the scale line when reading. The telescopic member 250 drives the amplifier 260 to reciprocate along the length direction of the insertion section 120, which is conducive to the amplification and clear reading of the exposed scale line on the insertion section 120. Through the setting of the amplification component 200, it is avoided that the medical staff bow their heads too much, it is not easy to destroy the sterile environment, and the perioperative infection rate is reduced.

[0073] The rigid ureteroscope with scale in this embodiment has scales set on the insertion section 120 of the ureteroscope body, so that the doctor can directly judge and confirm the location of the lesion according to the readings displayed on the scale during the operation, which makes up for the shortcomings of imaging methods such as CT scanning in locating ureteral lesions and changes the method of roughly judging the location of ureteral lesions.

[0074] Furthermore, considering that during the reading process, the rotating ring 220 and the fixed ring 210 are in a relatively static state, in order to prevent the rotating ring 220 from rotating and the amplifier 260 from rotating, the amplifying assembly 200 further includes a first limiting assembly 230, such as Figure 2 and Figure 6 As shown, the limiting connection between the fixed ring 210 and the rotating ring 220 is achieved through the first limiting assembly 230 .

[0075] In the present embodiment, when the rigid ureteroscope insertion section 120 enters the human ureter and is located inside the human ureter, the medical staff rotates the insertion section 120 to see the internal situation of the human ureter clearly. At this time, in order to ensure that the amplifier 260 is between the human eye and the scale line when reading the scale number, the amplifier 260 needs to be rotated. In the present embodiment, the amplifier 260 is fixedly connected to the rotating ring 220 through the fixing member 240 and the telescopic member 250, and the rotating ring 220 is sleeved on the outside of the fixing ring 210. Therefore, in the present embodiment, the rotating ring 220 is arranged to rotate around the fixing ring 210, so as to realize the rotational movement of the amplifier 260. At the same time, in order to ensure that the amplifier 260 and the insertion section 120 are in a relatively static state during the reading process, that is, the amplifier 260 and the ureteroscope body 100, the rotating ring 220 fixedly connected to the amplifier 260 is arranged to be fixedly connected with the fixing ring 210 through the first limiting assembly 230.

[0076] More specifically, the first limiting assembly 230 includes a slide groove 231, a slider 232, an adjustment plate 233, a connecting rod 234 and a tooth plate 235 which are connected in sequence. Figure 6 and Figure 7 As shown, the slide groove 231 is arranged on the fixing member 240, the length direction of the slide groove 231 coincides with the radial direction of the rotating ring 220, and the slide groove 231 is slidably connected with the slider 232. The fixing ring 210, the tooth plate 235 and the fixing pipe section 110 are arranged in sequence from the outside to the inside, and a slot is arranged on the upper surface of the tooth plate 235.

[0077] The first limiting assembly 230 further includes a protrusion 237, such as Figure 5 As shown; the protrusion 237 matches the slot; the protrusion 237 is arranged on the inner wall of the fixed ring, and a distance is set between the outer wall of the fixed pipe section 110, and the connection and disassembly of the fixed ring 210 and the rotating ring 220 are realized by plugging and unplugging the slot and the protrusion 237.

[0078] It should be noted that the first limiting assembly 230 also includes an elastic member 236, such as Figure 7 As shown, by compression and extension of the elastic member 236, the slider 232 is reciprocated on the slide groove 231 and along the length direction of the slide groove 231, and the slider 232, the elastic member 236 and the fixing member 240 are fixedly connected in sequence; the direction of the long axis of the elastic member 236 is parallel to the direction of the long axis of the slide groove 231.

[0079] Considering the movement direction of the elastic member 236, a directional member matching the elastic member 236 is provided on the fixing member 240. For example, the directional member is a directional column, and the elastic member 236 is sleeved outside the directional column. The elastic member 236 is preferably a spring.

[0080] In this embodiment, by pressing the adjustment plate 233, on the one hand, the slider 232 is driven to move in the slide groove 231 to compress the elastic member 236, and on the other hand, the adjustment plate 233 is pressed to drive the tooth plate 235 to move downward. When the position of the protrusion 237 remains unchanged, the slot moves downward with the tooth plate 235, and the slot is separated from the protrusion 237, thereby releasing the locking state between the tooth plate 235 and the fixing ring 210; when the elastic member 236 is in a compressed state, the rotating ring 220 is rotated, and then the amplifier 260 is driven to rotate around the ureteroscope body 100 through the fixing member 240. When the magnifying glass 260 is between the human eye and the ureteroscope body 100 and is directly below the human eye, the adjustment plate 233 is released, and the elastic member 236 drives the slider 232 to reset. At this time, the adjustment plate 233 drives the tooth plate 235 to move upward, and the slot is connected to another protrusion, thereby realizing the limit connection between the tooth plate 235 and the fixing ring 210.

[0081] Further, considering the limited connection between the fixed ring 210 and the rotating ring 220, the fixed ring 210 is limitedly connected to the fixed pipe section 110. From the front end to the rear end, the fixed ring 210 includes a first connecting section 211, a second connecting section 212 and a third connecting section 213 arranged in sequence, such as Figure 5 As shown; the first connecting section 211 is limitedly connected to the fixed pipe section 110; an annular groove 2121 is provided on the outer wall surface of the second connecting section 212, as shown Figure 4 As shown; a protrusion 237 is provided on the inner wall surface of the third connecting section 213.

[0082] More specifically, in order to realize the limited fixed connection between the rotating ring 220 and any position of the fixing ring 210 after the rotating ring 220 rotates, the protrusions 237 are arranged evenly along the circumferential direction of the inner wall of the fixing ring 210, and specifically, the protrusions 237 are arranged evenly along the circumferential direction of the inner wall of the third connecting section 213, such as Figure 5 shown.

[0083] In order to satisfy the position limitation of the fixed ring 210 on the rotating ring 220, the outer wall surface of the second connecting section 212 is provided with an annular groove 2121 matching with the rotating ring 220, such as Figure 4 and Figure 5 As shown, in the first direction, the rotating ring 220 and the fixed ring 210 are in a relatively static state.

[0084] More specifically, in order to meet the matching requirements between the fixing ring 210 and the fixing pipe section 110 , the inner diameter of the first connecting section 211 is set to be equal to the outer diameter of the fixing pipe section 110 .

[0085] Furthermore, considering that the fixing ring 210 and the fixing pipe section 110 are in a relatively static state during the operation, the amplifying assembly 200 further includes a second limiting assembly 270, such as Figure 4As shown, the fixing ring 210 is connected to the fixing pipe section 110 in a limiting manner through the second limiting assembly 270 , specifically, the first connecting section 211 is connected to the fixing pipe section 110 in a limiting manner.

[0086] More detailed description: The second limiting assembly 270 includes a connecting groove 271 and a limiting connecting member 272 matching the connecting groove 271, such as Figure 4 As shown, the connection groove 271 is arranged on the outer side wall of the fixed pipe section 110 ; the limiting connection member 272 penetrates through the first connection section 211 and is connected to the connection groove 271 in a limiting manner.

[0087] Exemplarily, the limiting connector 272 includes a handle 2721, a threaded section 2722, and a connecting section 2723 which are arranged in sequence. Figure 8 As shown, the threaded section 2722 is threadedly connected to the first connecting section 211 of the fixing ring 210, and the first connecting section 211 is provided with a threaded hole 2111 matching the threaded section 2722. Figure 5 As shown, the connecting section 2723 matches the connecting groove 271. The threaded section 2722 penetrates the threaded hole 2111 and is screwed with the threaded hole 2111, and drives the connecting section 2723 to move toward or away from the connecting groove 271 during the screwing process, thereby realizing the connection and separation of the connecting section 2723 and the connecting groove 271, thereby realizing the limited connection between the first connecting section 211 and the fixed pipe section 110, and finally realizing the limited connection between the fixing ring 210 and the fixed pipe section 110.

[0088] Further, considering that the rotating ring 220 is in the first direction, the rotating ring 220 and the fixed ring 210 are in a relatively static state, and the rotating ring 220 includes a ring body 221 and an annular fixed block 222, such as Figure 6 As shown; the annular fixing block is fixedly connected to the inner wall of the ring body 221 and matches with the annular groove 2121 set on the outer wall surface of the second connecting section 212. When the ring body 221 is sleeved on the outer wall of the fixing ring 210, the cooperation between the annular fixing block 222 and the annular groove 2121 realizes that the rotating ring 220 and the fixing ring 210 are in a relatively static state in the first direction.

[0089] Furthermore, in order to facilitate medical personnel to more quickly identify the scale, among the scale lines of the insertion section 120, one thick scale line is used, such as Fig. 9 As shown; twenty uses two thick engraved lines, such as Fig.10 As shown; thirty uses three thick engraved lines, such as Fig.11 As shown, forty adopts bar-shaped engraving lines, such as Fig.12 shown.

[0090] Furthermore, the rigid ureteroscope of this embodiment further includes a light guide port 300, an eyepiece 400, and an instrument channel entry end 500. The light guide port 300 is connected to the fixed pipe section 110, and the light guide port 300, the light guide port 300, and the insertion section 120 are arranged in sequence from the rear end to the front end. The instrument channel entry end 500, the eyepiece 400, and the fixed pipe section 110 are connected in sequence from the rear end to the front end.

[0091] When the rigid ureteroscope of this embodiment is used: for focal lesions, the insertion section 120 is inserted into the scope from the urethra, the entire urethra is explored to enter the bladder, and the ureteral opening is found. When the tip of the insertion section 120 just enters the ureteral opening, the scale on the insertion section 120 at the external urethral opening is recorded, and recorded as a reading H. The scope is continued to be inserted for exploration. When a tumor is found under direct vision, the scale on the insertion section 120 at the external urethral opening is recorded again, and recorded as a reading L. The difference between the reading H and the reading L is the distance between the tumor and the bladder ureteral opening.

[0092] For segmental lesions, the scope is inserted from the urethra, the entire urethra is explored to enter the bladder, and the ureteral opening is found. When the tip of the insertion section 120 just enters the ureteral opening, the scale on the insertion section 120 of the external urethra opening is recorded as the reading H1. The scope is continued to be inserted for exploration. When the starting part of the segmental lesion is found under direct vision, the scale on the insertion section 120 of the external urethra opening is recorded as the reading H2. When the end part of the segmental lesion is found under direct vision, the scale on the insertion section 120 of the external urethra opening is recorded as the reading H3. H2-H1 is the distance from the starting part of the lesion to the bladder ureteral opening, H3-A is the distance from the end of the lesion to the bladder ureteral opening, and H3-H2 is the length of the lesion.

[0093] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A rigid ureteroscope with a scale, characterized in that: include: A ureteroscope body (100) and a magnifying assembly (200); The ureteroscope body (100) comprises a fixed tube section (110) and an insertion section (120) connected to the fixed tube section (110), and the insertion section (120) is provided with scales along the length direction of the insertion section (120); The amplifying assembly (200) comprises a fixing ring (210), a rotating ring (220), a fixing member (240), a telescopic member (250) and an amplifier (260) which are connected in sequence; The fixing member (240), the rotating ring (220), the fixing ring (210) and the fixing pipe section (110) are arranged in sequence from the outside to the inside; The rotating ring (220) is capable of rotating around the fixed ring (210); The telescopic member (250) can drive the amplifier (260) to perform reciprocating motion along the direction of the long axis of the insertion section (120); The amplifier (260) is used to amplify the scale.

2. The rigid ureteroscope with scale according to claim 1, characterized in that: The amplifying component (200) further includes a first limiting component (230); The first limiting assembly (230) comprises a slide groove (231), a slider (232), an adjustment plate (233), a connecting rod (234) and a tooth plate (235) which are connected in sequence; The slide groove (231) is arranged on the fixing member (240); The fixing ring (210), the tooth plate (235) and the fixing pipe section (110) are arranged in sequence from the outside to the inside, and a slot is provided on the upper surface of the tooth plate (235).

3. The rigid ureteroscope with scale according to claim 2, characterized in that: The first limiting assembly (230) further includes a spring (236); The slider (232), the spring (236) and the fixing member (240) are connected in sequence.

4. The rigid ureteroscope with scale according to claim 2, characterized in that: The first limiting component (230) further includes a protrusion (237); The protrusion (237) matches the slot; The protrusion (237) is arranged on the inner side wall of the fixing ring, and a distance is arranged between the protrusion (237) and the outer wall of the fixing pipe section (110).

5. The rigid ureteroscope with scale according to claim 4, characterized in that: The direction of the long axis of the insertion section (120) is set as the first direction, the side where the insertion section (120) is located is the front end, and the side where the fixed pipe section (110) is located is the rear end; From the front end to the rear end, the fixing ring (210) comprises a first connecting section (211), a second connecting section (212) and a third connecting section (213) which are arranged in sequence; The first connecting section (211) is position-limitedly connected to the fixed pipe section (110); An annular groove (2121) is provided on the outer wall surface of the second connecting section (212); The protrusion (237) is arranged on the inner wall surface of the third connecting section (213).

6. The rigid ureteroscope with scale according to claim 5, characterized in that: The inner diameter of the first connecting section (211) is equal to the outer diameter of the fixed pipe section (110); The protrusions (237) are evenly arranged along the circumferential direction of the inner side wall of the third connecting section (213).

7. The rigid ureteroscope with scale according to claim 5, characterized in that: The rotating ring (220) comprises a second ring body (221) and an annular fixing block (222); The annular fixing block (222) is fixedly connected to the inner side wall of the second ring body (221) and matches the annular groove (2121).

8. The rigid ureteroscope with scale according to claim 1, characterized in that: The amplifying component (200) further includes a second limiting component (270); The fixing ring (210) is connected to the fixing pipe section (110) in a limiting manner via the second limiting assembly (270).

9. The rigid ureteroscope with scale according to claim 8, characterized in that: The second position-limiting assembly (270) comprises a connecting groove (271) and a position-limiting connecting piece (272) matching the connecting groove (271).

10. The rigid ureteroscope with scale according to claim 9, characterized in that: The connecting groove (271) is arranged on the outer side wall of the fixed pipe section (110); The limiting connection piece (272) passes through the fixing ring (210) and is connected to the connection groove (271) in a limiting manner.

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