CN115736800A - Combined ureteroscope - Google Patents

Abstract

The invention provides a combined ureteroscope which comprises a sheath and a scope body which is rotatably sleeved in the sheath, wherein a suction channel is formed between the scope body and the sheath, the size of the suction channel is changed by rotating the scope body to prevent blockage, the scope body can be bent and is suitable for entering the kidney of a human body and breaking dead-angle broken stones under a visual condition, a scope connecting part is arranged at the rear end of the sheath, a sheath connecting part is arranged at the rear end of the scope body, and the scope body and the sheath form a detachable whole by matching the scope connecting part and the sheath connecting part, so that medical personnel can hold the ureteroscope with one hand in the process of breaking stones, removing stones and the like, and time and labor are saved.

Description

combined ureteroscope

technical field

The invention relates to the field of medical equipment and supplies, in particular to a combined ureteroscope.

Background technique

Ureteroscope is a minimally invasive surgical instrument used to treat ureteral calculi or kidney stones and to detect ureteral and renal lesions. In the process of treating urinary tract stones, the stones are crushed under direct vision through a ureteroscope. Larger stones are removed with lithotripsy forceps or a stone basket, and smaller stones need to be discharged by the patient. When there are many crushed stones, it is time-consuming and labor-intensive to remove the stones, and the effect of self-expelling stones is not accurate, and the broken stones are easy to remain and increase the chance of stone recurrence.

attraction channel

In addition, when using ureteroscopic lithotripsy, a ureteral introducer sheath can be used as an auxiliary tool. The ureteral introducer sheath can establish a channel between the external opening of the urethra and the renal pelvis to facilitate the entry and exit of the ureteroscope. The current ureteroscope and ureteral guide sheath are separated. When the ureteroscope and ureteral guide sheath are used together, on the one hand, the ureteroscope and ureteral guide sheath may not fit due to the size problem, resulting in renal pelvis failure. Internal high pressure or low pressure will lead to high surgical risk; on the other hand, the ureteric sheath cannot follow the flexible ureteroscope into the lower renal calyx, and the lower renal calices will be sucked out by negative pressure, resulting in poor stone removal effect. Therefore, there is an urgent need to solve the above-mentioned problems existing in the current ureteroscope, to achieve the effect of removing stones while crushing them, so as to better meet the clinical needs.

Contents of the invention

One advantage of the present invention is to provide a combined ureteroscope, the mirror sheath of the combined ureteroscope is detachably connected to the mirror body, and the doctor can complete the operation of the mirror body with one hand, which changes the traditional two-hand operation mirror. The cumbersome sheath and mirror body make the operation easier in terms of instruments.

Another advantage of the present invention is to provide a combined ureteroscope, wherein the mirror body of the combined ureteroscope is rotatable inside the scope sheath, and the lens end of the ureter can be actively bent, and the bending angle and direction are adjustable, which is easy to use in Find stones in "dead corners" under visual conditions, and solve the problem of "visible but unbroken" stones, and the effect of crushing stones is better.

Another advantage of the present invention is to provide a combined ureteroscope, perfuse liquid through the working channel of the combined ureteroscope body, and suck liquid or gravel through the gap between the mirror body and the mirror sheath, so as to achieve suction while filling Effect. The distance between the mirror body and the mirror sheath can be adjusted, the gravel is discharged from the suction channel opening formed between the mirror body and the mirror sheath, and the mirror body is adjusted by rotating the mirror body on the The position inside the mirror sheath changes the ratio of the suction channel opening in real time to smoothly discharge stones and prevent blockage, or when a slight blockage occurs, it can be relieved by rotating the mirror body.

Another advantage of the present invention is to provide a combined ureteroscope, wherein the mirror body of the combined ureteroscope can be disassembled from the mirror sheath and drawn out. When serious blockage occurs, the mirror body can be pulled out, so that The channel of the main body of the mirror sheath completely becomes the mouth of the suction channel to solve the problem of blockage.

Another advantage of the present invention is to provide a combined ureteroscope, wherein the mirror body drives the mirror sheath to bend through active bending, so that the mirror sheath can be smoothly inserted to a predetermined position under visual conditions, reducing the need for bending of the traditional ureteral guide sheath. And the harm caused by blind insertion to the human body.

Another advantage of the present invention is to provide a combined ureteroscope, wherein an auxiliary inner core is detachably placed inside the scope sheath, wherein the auxiliary inner core has a certain strength and has a supporting effect on the softer scope sheath, In order to send the connected mirror sheath into the predetermined position according to the predetermined path.

Another advantage of the present invention is to provide a combined ureteroscope, wherein an auxiliary inner core is detachably placed inside the scope sheath, wherein the auxiliary inner core has a certain strength and has a supporting effect on the softer scope sheath, And the auxiliary inner core has a rounded tip to guide the mirror sheath to a predetermined position.

Another advantage of the present invention is to provide a combined ureteroscope, wherein the mirror body can be a rigid ureteroscope with a certain strength, sleeved inside the mirror sheath, and has a rounded tip to guide the mirror sheath into the human body Book a spot.

Another advantage of the present invention is to provide a combined ureteroscope, wherein the mirror sheath can enter the renal pelvis under the action of the mirror body and the auxiliary inner core, and the stones in the kidney can still be crushed.

Another advantage of the present invention is to provide a combined ureteroscope, wherein both the scope sheath and the scope body can rotate axially, and the scope body can move longitudinally along the scope sheath to change the front end of the scope body protruding from the scope sheath length to better perform corresponding operations.

According to one aspect of the present invention, the present invention provides a combined ureteroscope, comprising:

a mirror sheath having a main channel, a suction channel port communicating with the main channel, and including a mirror connecting portion; and

A mirror body, the mirror body includes a sheath connection part, at least one lighting element, an imaging element and has a working channel, which is suitable for placing a surgical instrument and perfusing liquid through the working channel, wherein the lighting element and the The imaging element is located at the front end of the mirror body, and the mirror body is detachably socketed inside the mirror sheath through the connection between the sheath connecting part and the mirror connecting part, wherein the mirror body is located at In the main channel, a suction channel that communicates with the main channel and the suction channel opening is formed between the outer wall of the mirror body and the inner wall of the mirror sheath. By changing the mirror body and the The position between the mirror sheaths is used to change the size of the suction channel.

Wherein the mirror body includes a mirror front section and a mirror rear section, the mirror front section is connected to the front part of the mirror rear section, and the sheath connection part is arranged on the mirror rear section, wherein the mirror front section includes A bending section and a main body section, the main body section is connected between the bending section and the mirror rear section, the mirror body also includes a control unit, and the control unit includes a control element and at least one control line , the control line is connected between the control element and the bending section, the control element is arranged at the rear section of the mirror, and the length of the control line is adjusted by operating the control element to control the bending The bending direction and bending angle of the segment, wherein the bending segment is suitable for bending to drive the mirror sheath sleeved outside the mirror body to bend.

The mirror sheath includes a mirror sheath front, a mirror sheath rear and a mirror sheath side, wherein the mirror sheath front is connected to the front of the mirror sheath rear, and the mirror sheath side is connected to the mirror sheath The connection between the front part of the mirror sheath and the rear part of the mirror sheath extends outward, the mirror connecting part is arranged at the rear part of the mirror sheath, the front part of the mirror sheath matches the front part of the mirror, The rear part of the mirror sheath is matched with the rear part of the mirror, so that the mirror body can be movably sleeved inside the mirror sheath, wherein the suction channel opening is arranged on the side of the mirror sheath, so The working channel runs through the front part of the mirror sheath and the rear part of the mirror sheath.

The mirror body also has a perfusion hole and a working channel opening which are independent of each other, both of which are arranged at the rear section of the mirror and communicate with the working channel respectively.

The mirror sheath has a main channel opening, a mounting port and a suction control hole communicating with the main channel, and the main channel port and the mounting port are respectively arranged at the front end of the mirror front section and the mirror sheath The rear end of the rear part, wherein the mirror body is adapted to enter the main passage through the installation opening, protrude from the main passage opening along the main passage to perform corresponding operations, wherein the suction passage opening, The suction control holes are all in communication with the suction channel, and a negative pressure environment is formed through the suction channel opening to promote the gravel in the lesion to be discharged through the suction channel and the suction channel opening sequentially, and by adjusting the The size of the suction control hole is used to control the size of the suction at the opening of the suction channel.

Wherein the mirror sheath further includes a sealing member, the sealing member is arranged on the inner wall of the rear part of the mirror sheath, and is located between the suction control hole and the installation port, wherein the sealing member has an opening The mirror body is adapted to pass through the opening and closing portion, so that the sealing member is sleeved on the outside of the mirror body to seal the suction channel.

Wherein the front part of the mirror sheath comprises an inner lining layer, a curved layer and a protective layer, wherein the curved layer is arranged between the inner lining layer and the protective layer, the curved layer is a spiral structure, The curved layer includes a dense part and a loose part, and the dense part is arranged in front of the loose part.

The curved section of the mirror body includes an inclined end and a flat end integrally formed, the lighting element and the imaging element are arranged on the flat end, and the control line is connected to the inclined end to Bending the inclined end drives the bending of the mirror body and mirror sheath.

Wherein, the connection between the mirror connection part and the sheath connection part is clamped, screwed, buckled or magnetically attracted.

The combined ureteroscope further includes an auxiliary inner core matched with the main channel, and the auxiliary inner core has a predetermined strength so as to be detachably sleeved inside the scope sheath through the main channel to support The mirror sheath enters the natural channel of the human body, wherein the auxiliary inner core includes a guide section and a support section, the guide section is connected to the front of the support section, and the top end of the guide section is a rounded tip, so as to The mirror sheath is guided into the body.

According to another aspect of the present invention, the present invention also provides a combined ureteroscope, comprising:

a mirror sheath having a main channel, a suction channel port communicating with the main channel, and including a mirror connecting portion; and

A mirror body, the mirror body includes a sheath connection part, at least one lighting element, an imaging element and has a working channel, which is suitable for placing a surgical instrument and perfusing liquid through the working channel, wherein the lighting element and the The imaging element is located at the front end of the mirror body, and the mirror body is detachably socketed inside the mirror sheath through the connection between the sheath connecting part and the mirror connecting part, wherein the mirror body is located at In the main channel, a suction channel that communicates with the main channel and the suction channel opening is formed between the outer wall of the mirror body and the inner wall of the mirror sheath. By changing the mirror body and the position between the mirror sheaths to change the size of the suction channel; and

An auxiliary inner core, the auxiliary inner core is matched with the main channel, so as to be detachably socketed inside the mirror sheath through the main channel, wherein the auxiliary inner core includes a guiding section and a supporting section and a connection section, wherein the support section is integrally formed between the guide section and the connection section, wherein the connection section is detachably connected to the rear end of the mirror sheath.

Wherein the mirror body also has a perfusion hole and a working channel opening which are independent of each other, both of which are arranged at the rear section of the mirror and communicate with the working channel respectively, and the mirror sheath has a A main channel opening, a mounting port and a suction control hole are connected, and the main channel port and the mounting port are respectively arranged at the front end of the front section of the mirror and the rear end of the rear part of the mirror sheath, wherein the mirror body It is suitable for entering the main passage through the installation opening, and protruding from the main passage opening along the main passage to perform corresponding operations, wherein the suction passage opening and the suction control hole are all connected with the suction passage connected to each other, forming a negative pressure environment through the opening of the suction channel, so that the gravel in the lesion is discharged through the suction channel and the opening of the suction channel in sequence, and the suction channel is controlled by adjusting the size of the suction control hole The attractive size of the mouth.

Wherein, the connection between the mirror connection part and the sheath connection part is clamped, screwed, buckled or magnetically attracted.

The auxiliary inner core has predetermined strength and toughness, and the auxiliary inner core is made of rubber material.

Description of drawings

Fig. 1 is a schematic perspective view of a combined ureteroscope according to a first preferred embodiment of the present invention.

Fig. 2 is a schematic exploded structure diagram of the combined ureteroscope according to the first preferred embodiment of the present invention.

Fig. 3 is a partial structural schematic diagram of the combined ureteroscope according to the first preferred embodiment of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the mirror sheath according to the first preferred embodiment of the present invention.

Fig. 5 is a partial structural cross-sectional view of the sheath included in the combined ureteroscope according to the first preferred embodiment of the present invention.

6A and 6B are schematic cross-sectional structural diagrams of the combined ureteroscope according to the above-mentioned preferred embodiment of the present invention, reflecting different positions of the mirror body in the main channel.

FIG. 7A to FIG. 7C are three variant implementations of the connecting manner of the mirror body and the mirror sheath of the above-mentioned preferred embodiment of the present invention.

Fig. 8 is a schematic diagram of the assembly process between an auxiliary inner core and a scope sheath included in the combined ureteroscope according to the preferred embodiment of the present invention.

Fig. 9 is a schematic perspective view of the combined ureteroscope according to the second preferred embodiment of the present invention.

Fig. 10 is a partial structural diagram of the mirror body included in the combined ureteroscope according to the second preferred embodiment of the present invention.

Fig. 11 is a partial structural diagram of the combined ureteroscope according to the second preferred embodiment of the present invention.

Fig. 12 is a partial structural schematic diagram of the combined ureteroscope according to the third preferred embodiment of the present invention.

Detailed ways

The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, so the above terms should not be construed as limiting the present invention.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element The quantity can be multiple, and the term "a" cannot be understood as a limitation on the quantity.

Referring to accompanying drawings 1 to 8, a combined ureteroscope according to a first preferred embodiment of the present invention is illustrated. In this embodiment, the combined ureteroscope includes a scope sheath 10 and a scope body 20 , and the scope sheath 10 is detachably sleeved on the outside of the scope body 20 . The mirror sheath 10 includes a mirror connecting portion 11, the mirror connecting portion 11 is arranged at the rear portion of the mirror sheath 10, and the mirror body 20 includes a sheath connecting portion 21, and the sheath connecting portion 21 is arranged At the rear of the mirror body 20, the mirror connecting part 11 is matched with the sheath connecting part 21, so as to be detachably connected between the mirror connecting part 11 and the sheath connecting part 21, so that The mirror sheath 10 and the mirror body 20 are detachably connected, so that the mirror body 20 is detachably sleeved inside the mirror sheath 10 .

The connection between the mirror body 20 and the mirror sheath 10 allows the doctor to place the mirror sheath and the mirror body with one hand, and can place the mirror sheath and the mirror body at the same time, changing the traditional step-by-step placement The cumbersome steps of the mirror sheath and mirror body have changed the traditional two-hand operation of the mirror sheath and mirror body to achieve placement and suction operations. The operation of the mirror body even requires the help of an assistant, but in the present invention, the suction operation can be realized by connecting the mirror sheath and the mirror body together as a whole with one hand, which makes the operation easier in terms of instruments, and saves manpower and It reduces the cost, reduces the workload of doctors, and can better ensure the success of the operation.

In addition, the mirror sheath 10 has a main channel 100, the mirror body 20 is rotatably inserted inside the main channel 100, and the gap between the mirror body 20 and the mirror sheath 10 forms a suction channel 101, wherein the suction channel 101 is a part of the main channel 100. That is to say, the main channel 100 is arranged along the length direction of the mirror body 20 , that is, runs through the front and rear of the mirror body 20 . Part of the space of the main channel 100 is occupied by the mirror body 20, and the main channel 100 not occupied by the mirror body 20 forms the suction channel 101. By rotating the mirror body 20, the main channel 100 The position and size of the suction channel 101 can be changed by pulling out the mirror body 20 to ensure smooth stone removal and avoid stone blockage.

That is to say, the mirror body 20 and the mirror sheath 10 are socketed, and the mirror body 20 can be located at any position of the main channel 100 of the mirror sheath 10 . The mirror body 20 and the mirror sheath 10 are placed concentrically. When the mirror body 20 is located in the middle of the main channel 100 of the mirror sheath 10, the suction channel 101 surrounds the mirror body in a ring shape. The outside of the peripheral side of the mirror body 20 . When the mirror body 20 is located on one side of the main channel 100 , the other side of the main channel 100 not occupied by the mirror body 20 forms the suction channel 101 .

When blockage occurs, adjust the mirror body 20, change the position of the mirror body 20 in the main channel 100, and adjust the suction channel by changing the distance between the mirror body 20 and the mirror sheath 10 101, or adjust the ratio of the suction channel 101 to the main channel 100 to solve the blockage problem. If the mirror body 20 is deflected to one side of the main channel 100, the suction channel 101 presents a mode in which one side has a larger space and the other side has a smaller space, and larger stones can be drawn from the larger side of the suction channel. Discharge, it is very convenient to solve the blockage phenomenon, and it is also conducive to the smooth discharge of stones of different sizes. When severe blockage occurs, the mirror body 20 can be extracted, and the entire main channel 100 is the suction channel 101, which can discharge large stones and alleviate the blockage phenomenon. When the mirror body 20 is needed , can be placed in the main channel 100 again to perform further operations.

In the present invention, the end of the combined ureteroscope inserted into the urethra of the human body is defined as the front end or top end, and the end remaining outside the human body is defined as the rear end or terminal end.

The mirror sheath 10 includes a mirror sheath front portion 12 and a mirror sheath rear portion 13, wherein the mirror sheath rear portion 13 is connected to the rear portion of the mirror sheath front portion 12, and the mirror connecting portion 11 is arranged on The rear side of the mirror sheath rear part 13, the main channel 100 runs through the mirror sheath front part 12 and the mirror sheath rear part 13, that is, the mirror sheath front part 12 and the mirror sheath rear part 13 interior A hollow pipe forms the main channel 100 .

The mirror sheath 10 also has a suction channel opening 102, the suction channel opening 102 is arranged at the junction of the mirror sheath front part 12 and the mirror sheath rear part 13, and is connected to the main channel 100 and the mirror sheath rear part 13. The suction channel 101 is connected to form a negative pressure environment through the suction channel opening 102 to discharge the gravel and liquid out of the body through the suction channel 101 and the suction channel opening 102.

The mirror sheath 10 also includes a mirror sheath side portion 14 , the mirror sheath side portion 14 is located at the junction of the mirror sheath front portion 12 and the mirror sheath rear portion 13 . That is to say, the mirror sheath side portion 14 is formed extending from the junction of the rear end of the mirror sheath front portion 12 and the front end of the mirror sheath rear portion 13 to the outer side. Wherein the suction channel opening 102 is arranged on the mirror sheath side part 14 along the length direction of the mirror sheath side part 14, and through the suction channel opening 102, the mirror sheath side part 14 and the mirror The front part 12 of the sheath and the rear part 13 of the mirror sheath are all connected.

The mirror sheath 10 also has a suction control hole 103, the suction control hole 103 is arranged at the rear part 13 of the mirror sheath, wherein the suction control hole 103 communicates with the main channel 100 to control the The suction power of the combined ureteroscope. When the doctor operates the combined ureteroscope, a single finger is placed on the suction control hole 103, so for the convenience of one-handed operation, the suction control hole 103 is arranged on the side of the rear part 13 of the scope sheath, and About the size of a human finger. When the doctor holds the rear part 13 of the mirror sheath or holds the rear end of the mirror body 20 connected to the rear part 13 of the mirror sheath, he can operate with one hand and place his fingers in the suction control hole 103 , to change the suction force by intermittently closing or changing the size of the suction control hole 103, so as to better control the discharge of gravel.

The mirror sheath 10 also has a main access opening 104 and a mounting opening 105, wherein the main access opening 104 is arranged at the front end of the front portion 12 of the mirror sheath, and the installation opening 105 is arranged at the mirror sheath The rear end of the rear part 13 , the main passage opening 104 and the installation opening 105 communicate with the main passage 100 at the front end and the rear end of the main passage 100 respectively.

The main channel opening 104 is also in communication with the suction channel 101, therefore, the gravel at the lesion site is suitable to enter the suction channel 101 through the main channel opening 104, and then further enter the suction channel opening 102 , and then excreted from the body.

The mirror body 20 is adapted to enter the main channel 100 through the installation opening 105 and is adapted to protrude from the main channel opening 104 to perform operations such as illumination, imaging, lithotripsy, and irrigation.

Referring to Figure 4, the front portion 12 of the mirror sheath includes an inner lining 121, a curved layer 122 and a protective layer 123, wherein the curved layer 122 is arranged on the inner lining 121 and the protective layer. Between layers 123. Wherein the two ends of the inner lining layer 121, the bending layer 122 and the protective layer 123 are all connected, such as socketing, sewing, etc., or the inner lining layer 121, the bending layer 122 and the Both ends and the middle part of the protective layer 123 are connected, such as bonding or pasting or integral molding, so that the inner lining layer 121 , the curved layer 122 and the protective layer 123 form an integral structure. The inner lining layer 121 is located outside the main channel 100 and forms the outer wall of the main channel 100 , that is, the main channel 100 is formed inside the inner lining layer 121 . The protective layer 123 is located on the outermost side, serving as the outer wall of the front part 12 of the mirror sheath.

Wherein the inner lining layer 121 and the protective layer 123 are suitable to be made of polymer materials, especially suitable to be made of lubricating polymer materials, so as to reduce friction and facilitate movement.

The bending layer 122 is a helical structure, a mesh structure or a snake bone structure, so as to facilitate bending at different segments. In the present invention, the bending layer 122 can also be implemented as a spring, and the bending is realized through the elasticity of the spring and the helical structure of the spring.

It is worth mentioning that the curved layer 122 includes a dense portion 1221 and a loose portion 1222 , and the loose portion 1222 and the dense portion 1221 are connected and both have a helical structure. Wherein the distance between the helical coil layers adjacent to the loose part 1222 is relatively large, and the distance between the helical coil layers adjacent to the dense part 1221 is relatively small. For the loose part 1222 and the dense part 1221 with the same length, the number of helical turns of the loose part 1222 is less than the number of helical turns of the dense part 1221 .

It is worth mentioning that the bending layer 122 includes a plurality of helical turns, and the plurality of helical turns are connected so that the bending layer 122 is suitable for bending. The helical coil of the curved layer 122 is suitable to be made of metal material, which is similar to a spring structure, and can be made to a corresponding degree of density and looseness according to usage requirements, so as to meet actual usage requirements.

Wherein the spiral coil of the curved layer 122 is adapted to be connected with the inner lining layer 121 and the protective layer 122, and the three are connected into an integral structure, for example, the inner lining layer 121 and the protective layer 122 are adhered In or fixed on the curved layer 122, the spiral coil of the curved layer 122 can also be wrapped between the inner lining layer 121 and the protective layer 122, so as to protect the complete layer and prevent the human body from being scratched. And make it easy to move.

Wherein the loose part 1222 forms the rear section of the curved layer 122, that is, as the rear half structure of the front part 12 of the mirror sheath; the dense part 1221 forms the front section of the curved layer 122, as the The front half structure of the mirror sheath front part 12. The dense part 1221 is easy to bend in different places, and it is easy to adjust the bending angle and bending direction. The loose part 1222 is located in the rear section, and the frequency of adjusting the bending angle is less.

Therefore, the dense portion 1221 can bend more nodes, and the bending angle and bending direction are more changeable, so as to meet different demands. For the mirror sheath 10 , the front half of the mirror sheath 10 is bent more and used more times, therefore, the denser spiral structure can prolong the service life of the mirror sheath 10 and is more convenient to bend. For the second half of the mirror sheath 10, the number of adjustments is less, as long as it can be properly bent, therefore, the relatively sparse helical structure can not only ensure the strength and use requirements of the mirror sheath 10, but also save energy. cost.

Those skilled in the art can understand that, the arrangement of the loose part 1222 and the dense part 1221 in the above embodiment is just an example, and the loose part and the dense part of the curved layer 122 can be arranged in other ways. , such as setting at intervals, or using dense parts as a whole, etc., different setting methods can meet the needs.

5, in the present invention, the mirror sheath 10 also includes a sealing member 16, the sealing member 16 is arranged on the inner wall of the mirror sheath rear portion 13, wherein the sealing member 16 has An opening and closing part 160 , the opening and closing part 160 is preferably arranged in the middle of the sealing member 16 , and can be implemented in a saw-toothed or circular shape, so that the mirror body 20 can be inserted into the opening and closing part 160 , and when the opening and closing portion 160 can wrap around the outside of the mirror body 20 to seal the suction channel 101 and prevent air leakage between the mirror body 20 and the mirror sheath 10 .

Specifically, the sealing member 16 is disposed at the rear portion 13 of the mirror sheath, and is located between the suction control hole 103 and the mirror connecting portion 11 . After the mirror body 20 passes through the sealing member 16, the sealing member 16 is tightly wrapped around the outer wall of the mirror body 20, so that the suction channel 101 and the suction channel opening 102 are sealed. , in order to create a negative pressure to attract fluid and stones. Preferably, the sealing member 16 is made of elastic material, and is fixed on the peripheral side of the inner wall of the rear part 13 of the mirror sheath. The opening and closing part 160 is circular, oval or detachable in two pieces, which can allow the mirror body 20 to be inserted under the action of elasticity, and can fit the outer wall of the mirror body 20 after insertion without affecting the The axial movement and circumferential rotation of the mirror body 20, that is, during the rotation of the mirror body 20 or the process of pulling out, the sealing member 16 always seals the suction channel 101 to ensure continuous and smooth stone removal. Or drain.

The mirror body 20 includes a mirror front section 22 and a mirror rear section 23, the mirror front section 22 is connected to the front of the mirror rear section 23, wherein the mirror front section 22 is sleeved on the mirror sheath front 12 , the mirror rear section 23 is partly sleeved on the mirror sheath rear part 13 , and partly exposed at the rear part of the mirror sheath rear part 13 . That is to say, when the mirror body 20 is sleeved inside the mirror sheath 10, the mirror front section 22 enters the main channel 100 sequentially from the installation port 105, and goes from the mirror sheath rear portion 13 toward The direction of the front part 12 of the mirror sheath advances until it reaches or passes through the main channel opening 104, and the movement of the front mirror section 22 drives the movement of the rear mirror section 23, so that the rear mirror section 23 is partially located at the Part of the main channel 100 at the rear part 13 of the mirror sheath is located outside the installation opening 105 .

The sheath connection part 21 is arranged on the mirror rear section 23, and when the mirror body 20 is sleeved inside the mirror sheath 10, the sheath connection part 21 arranged on the mirror rear section 23 and the set Corresponding to the mirror connecting portion 11 at the rear portion 13 of the mirror sheath, the mirror sheath connecting portion 21 is connected to the mirror connecting portion 11, so that the mirror body 20 can be connected to the mirror sheath 10. The two are connected to form an integrated structure, so that the doctor can simultaneously operate the mirror body 20 and the mirror sheath 10 with one hand.

It is worth mentioning that, in this embodiment, as shown in FIG. 11 is implemented as snap-in. Wherein the mirror connecting portion 11 is implemented as a groove, is arranged on the inner side wall of the mirror sheath rear portion 13 of the mirror sheath 10, and the mirror connecting portion 11 is arranged on the outer side wall of the mirror rear section 23 , implemented as raised. Wherein the mirror connecting portion 11 and the sheath connecting portion 12 are both ring structures, and they are matched so that the mirror sheath 10 and the mirror body 20 are detachably connected. And after the two are connected, the matching of the groove and the protrusion can seal the gap between the mirror sheath 10 and the mirror body 20, so as to form negative pressure to expel stones.

According to one embodiment of the present invention, in order to adjust the length of the mirror body 20 protruding from the front end of the mirror sheath 10, the number of mirror connecting parts 11 of the mirror sheath 10 is set to two or three or more Multiple. As shown in FIG. 7B , according to an embodiment of the present invention, the number of the mirror connecting parts 11B is implemented as two, and the two mirror connecting parts 11B are arranged at intervals and longitudinally on the mirror. In the sheath rear part 13 , the two mirror connecting parts 11B are matched with the sheath connecting part 21B, and the sheath connecting part 21B is selectively connected with one of the mirror connecting parts 11B. When different scope connecting parts 11B are connected, the length of the main channel 100 through which the front end of the scope body 20 protrudes from the front end of the scope sheath 10 is different, so that corresponding operations can be performed according to clinical needs.

According to another embodiment of the present invention, as shown in FIG. 7C , the mirror connecting portion 11C and the sheath connecting portion 21C are threaded, so that the mirror sheath 10 and the mirror body 20 Phase screw connection. Those skilled in the art can understand that, in addition to the above-mentioned connection methods, the connection between the mirror connection part 11 and the sheath connection part 21 can also be implemented in ways such as buckle connection, clip connection, magnetic attraction and the like.

In the present invention, the mirror sheath 10 further includes an auxiliary part 15C, the auxiliary part 15C is arranged at the rear end of the mirror sheath rear part 13 and surrounds the mirror sheath rear part 13 in a ring shape, preferably The sheath wall peripheral side of the mirror sheath rear part 13 located outside the installation opening 105 . And the auxiliary part 15C is arranged on the peripheral side of the installation port 105, when the mirror body 20 is sleeved in the mirror sheath 10, the auxiliary part 15C is connected to the outer wall of the mirror body, so that the The connection between the mirror connecting portion 11C and the sheath connecting portion 21C is more stable. For example, the sealing member 15C can be implemented in the form of buckles and slots and gaskets, or it can be implemented in the form of adsorption. By implementing the sealing member as an adsorption plate, it is adsorbed to the outer wall of the mirror body 10, thereby being sealed. .

In the present invention, the mirror body 20 has a working channel 200, wherein the working channel 200 is independently arranged along the length direction of the mirror body 20, and runs through the mirror front section 22 of the mirror body 20 and the mirror body. Back section 23. That is to say, the working channel 200 is longitudinally arranged on the mirror body 20 . Wherein the working channel 200 is used as a channel for surgical instruments to perform corresponding operations, for example, the lithotripsy optical fiber performs lithotripsy through the working channel 200; The clarity of the surgical field of view and the balance of intracavitary pressure can engulf the broken stone to facilitate the discharge of the broken stone.

The mirror body 20 also has a working channel opening 201, wherein the working channel opening 201 is arranged at the end of the mirror rear section 23 and communicates with the working channel 200, and surgical instruments are suitable for passing through the working channel. The channel opening 201 enters the working channel 200 , and then protrudes out of the working channel 200 at the front end of the mirror front section 22 to perform corresponding operations.

The mirror body 20 also has a perfusion hole 202, which is arranged on the side of the mirror rear section 23 and communicates with the working channel 200, so as to perfuse liquid through the perfusion hole 202 to the working channel 200. It is worth mentioning that, for the convenience of operation, the perfusion hole 202 is provided at the side near the rear of the mirror rear section 23 .

Those skilled in the art can understand that the perfusion hole 202 and the working channel opening 201 are set independently, so that the perfusion and instruments can work independently or simultaneously according to requirements.

The mirror body includes at least one illuminating element 24 and at least one imaging element 25, wherein the illuminating element 24 and the imaging element 25 are independently arranged on the top of the mirror front section 22 at intervals to provide illumination and Imaging enables the mirror body 20 to perform corresponding operations under visualization conditions, ensuring the success rate of the operation.

In the present invention, it can be implemented as two lighting elements, which are respectively located on both sides of the imaging element, or it can be implemented as one lighting element or multiple lighting elements surrounding the circumference of the imaging element, and different numbers of lighting can be designed according to the needs of use. element.

The connecting wires of the illuminating element 24 and the imaging element 25 are embedded in the mirror wall of the mirror body 20 and protrude from the side of the mirror rear section 23 to connect to a power source and the like.

The mirror front section 22 includes a curved section 221 and a main body section 222, wherein the curved section 221 is located at the front end of the main body section 222, and the main body section 222 is connected to the curved section 221 and the mirror rear section 23 Between, the bending section 221 is suitable for bending.

The curved section 221 is suitable to be implemented as a serpentine, a helical structure or other bendable manners.

In this embodiment, the mirror body 20 further includes a control unit 26, the control unit 26 is arranged on the mirror rear section 23 and connected to the curved section 221 of the mirror front section 22, so as to control the The bending of the bending section 221 is described.

Specifically, the control unit 26 includes a control element 261 and two control wires 262, the control wire 262 is connected between the control element 261 and the bending section 221, and the control wire 262 is installed on the The interior of the mirror body 20 is preferably embedded in the mirror wall of the mirror body 20 . The control element 261 is arranged on the mirror rear section 23 and is located outside the installation port 105, so as not to affect the sleeve between the mirror body 20 and the mirror sheath 10, and to facilitate the control of the The control element 261 is used to adjust the length of the control line 262 , so as to control the bending angle and the bending direction of the bending section 221 .

Those skilled in the art can understand that the control element 261 can be implemented as a dial, a button or an operating handle, as long as the length of the control line 262 can be adjusted.

In this embodiment, both the mirror body 20 and the mirror sheath 10 are relatively soft, and their front ends are flush. Therefore, the mirror sheath 10 cannot be inserted into a predetermined position of the human body alone, and other components are needed to guide the insertion. Referring to Figure 8, the mirror front section 22 of the mirror body 20 is relatively soft, and the mirror sheath 10 is also relatively soft. After the mirror body 20 is sleeved on the mirror sheath 10, it cannot have sufficient strength. Passes through the urethra, bladder, ureters and cannot reach the kidneys. In this embodiment, an auxiliary inner core 30 is added as an element of the combined ureteroscope, wherein the auxiliary inner core 30 has a predetermined strength, can support the mirror sheath 10, and assist the mirror sheath 10 into the human body.

The auxiliary inner core 30 includes a guiding section 31 and a supporting section 32 , wherein the guiding section 31 is integrally formed at the front of the supporting section 32 . The guide section 31 has a rounded tip, so as to smoothly send the mirror body 20 and the mirror sheath 10 to a predetermined position through the natural passage of the human body without damaging human skin tissue. Wherein the guide section 31 is an inclined structure, a wedge structure or a tapered structure.

During application, the auxiliary inner core 30 is sleeved inside the mirror sheath 10 and placed in the main channel 100 of the mirror sheath 10, wherein the auxiliary inner core 30 has sufficient strength to support The mirror sheath 10 . Under the guidance of the auxiliary inner core 30, the mirror sheath 10 is guided to a predetermined position, and then the auxiliary inner core 30 is pulled out, and then the mirror body 20 is placed in the main channel 100 to perform corresponding operations . During the operation, the bending of the mirror sheath 10 is driven by the bending of the mirror body 20 , so that stones in "dead spots" can be found.

In this embodiment, the sheath connection part 21 is arranged on the mirror rear section 22, and matches with the sheath connection part 11 of the mirror sheath 10, and the two are buckled, clamped or magnetically connected. It can be detachably connected by suction or screw connection.

Both the top end of the mirror front section 22 and the mirror sheath 10 are flush, and the top end of the auxiliary inner core 30 is a pointed structure, so as to guide the mirror sheath 10 into the human body.

Referring to accompanying drawings 9 and 11, in this embodiment, the combined ureteroscope includes a mirror sheath 10A, a mirror body 20A and an auxiliary inner core 30A, wherein the mirror sheath 10A and the auxiliary The inner core 30A is the same as the above embodiment, and the mirror body 20A is a modified implementation of the above embodiment.

That is to say, the mirror sheath 10A includes the mirror connecting portion 11A, the mirror sheath front portion 12A, the mirror sheath rear portion 13A, and the mirror sheath side portion 14A that are the same as the above-mentioned embodiments, and has The main passage 100A, the suction passage 101A, the suction passage opening 102A, the suction control hole 103A, the main passage opening 104A and the installation opening 105A.

In this embodiment, the number and arrangement of the illuminating elements and imaging elements of the mirror body 20A are modified. The mirror body 20A includes a sheath connecting portion 21A, a front mirror section 22A, a rear mirror section 23A, at least one lighting element 24A, and an imaging element 25A, wherein the front mirror section 22A is integrally formed on the rear mirror section 23A The illumination element 24A and the imaging element 25A are arranged at the top of the mirror front section 22A.

Wherein this embodiment is implemented as two illumination elements 24A, and the two illumination elements 24A are respectively arranged on two sides of the imaging element 25A, as shown in FIG. 10 . The sheath connection part 21A is arranged on the mirror rear section 22A, and matches with the sheath connection part 11 of the mirror sheath 10, and the two are buckled, clamped, magnetically attracted or screwed together. detachably connected.

In this embodiment, the top end of the mirror front section 22A and the mirror sheath 10A are flush, and the top end of the auxiliary inner core 30A is a pointed structure, so as to guide the mirror sheath 10A and the mirror body 20A enters the human body.

The size of the auxiliary inner core 30A is smaller than that of the main channel 100 , so that the auxiliary inner core 30A is suitable for being sleeved inside the main channel 100 to provide a support strength for the mirror sheath 10 . With the help of the auxiliary inner core 30A, the flexible scope sheath 10 has a certain strength. When entering the urethra, bladder and ureter, it has enough strength to stretch the inner wall of the natural passage of the human body to more smoothly Arrive at the predetermined location.

The auxiliary inner core 30A includes a guiding section 31A, a supporting section 32A and a connecting section 33A integrally formed, wherein the guiding section 31A is connected to the front end of the supporting section 32A, and the connecting section 33A is connected to the The rear end of the support section 32A. Wherein the top end of the guide section 31A is a rounded tip, a tapered structure, an inclined structure or a wedge-shaped structure, and the size of the guide section 31A gradually increases from the top end of the guide section 31A toward the direction of the support section 32A, The size of the top end of the guide section 31A is smaller than the size of the end and smaller than the size of the support section 32A, so as to better guide the mirror sheath 10 into the human body.

It is worth mentioning that the guide section 31A of the auxiliary inner core 30A is a tapered structure, a wedge-shaped structure or an inclined structure. Wherein the auxiliary inner core 30A can be a solid structure or a hollow structure, as long as it has enough supporting strength to support the soft mirror sheath 10, and has a certain degree of flexibility, it can drive the mirror sheath 10 to be moderately bent. The natural passage of the human body.

When the auxiliary inner core 30A is installed in the main channel 100A of the mirror sheath 10A through the installation port 105A, the auxiliary inner core 30A provides support for the soft mirror sheath 10, so that the The mirror sheath 10A and the auxiliary inner core 30A form a detachable integral body, and the connecting section 33A allows the inner core to be detachably clamped to the end of the mirror sheath 10A for easy one-handed operation. The connection section 33A can be detachably connected to the rear end of the mirror sheath 10A by means of screw connection, clip connection, sleeve connection or magnetic attraction.

Guided by the guiding section 31A of the auxiliary inner core 30A, it enters the human body as a whole. After reaching the predetermined position, pull out the auxiliary inner core 30A backward from the installation port 105A, then insert the mirror body 20A into the human body from the installation port 105A along the main channel 100, and then connect the mirror body The part 11A is connected with the sheath connecting part 21A to fix the scope sheath 10A and the scope body 20A, and subsequent operations such as lithotripsy, suction, and perfusion can be realized with one hand.

During the working process of the mirror sheath 10 and the mirror body 20 , a surgical instrument such as a lithotripsy fiber is inserted into the working channel 200 , and lithotripsy is performed under the visualization conditions provided by the mirror body 20 . Since the mirror body 20 is suitable for axial rotation along the mirror sheath 10, it is also suitable for longitudinal movement along the mirror sheath 10, so as to change the front end of the mirror body 20 protruding from the mirror sheath 10. length. Therefore, the surgical instrument is also suitable for moving or rotating along the channel provided by the mirror body 20, and can bend along with the active bending of the mirror body 20, so as to find tricky stones located in dead corners inside the kidney And crushing, for the place where the conventional ureteroscope in the dead angle cannot reach, it can also carry out lithotripsy, the effect of crushing stone is better, and the crushing stone is more thorough.

In addition, the outer wall of the mirror sheath 10 is made of a lubricating material, or coated with an anti-skid coating, so that the outer wall of the mirror sheath 10 is relatively lubricated, reducing the friction with the passage wall of the human body, and facilitating the smoothing of the mirror sheath. 10 carry out axial rotation. When the mirror sheath 10 rotates axially, it can also drive the mirror body 20 and the surgical instrument to rotate, thereby changing the position of the surgical instrument so that the surgical instrument can reach a wide range of Stones and cunning stones in dead corners and crushed to improve the stone breaking effect.

In this embodiment, the mirror body 20 can be implemented as a rigid ureteroscope or as a flexible ureteroscope. Those skilled in the art can understand that the mirror body 20 can be implemented as a hard mirror with predetermined hardness. When implemented as a rigid mirror, the curved section 221 may be implemented as an inclined structure with a rounded tip, so as to guide and drive the mirror sheath into the human body. And the mirror front section 221 has a predetermined strength to ensure that the mirror body 20 can support the mirror sheath 10 and have sufficient strength to drive the mirror sheath 10 to bend and enter the human body channel and reach the lesion under visualization conditions parts.

Referring to accompanying drawing 12, it is the third preferred embodiment of the present invention. The mirror body 20 is deformed. In this embodiment, the curved section 221D includes an inclined end 2211D and a flat end 2212D, wherein the inclined end 2211D is connected to the flat end 2212D, both of which are suitable for integral molding, and the flat end 2212D Located at the top of the inclined end 2211D. The control line 262 is connected to both sides of the slanted end 2211D, and controls the bending angle and direction of the slanted end 2211D to drive the bending of the bending section 221D, thereby driving the bending of the outer mirror sheath 10D.

The illumination element 24 and the imaging element 25 are arranged at the flat end 2212D, the outlet of the working channel 200D is arranged along the flat end 2212D to the inclined end 2211D, and is located at the flat end 2212D. end 2212D, and close to the outer sidewall of the flat end 2212D.

It is worth mentioning that the inclined end 2211D has a round structure, which can guide the mirror body 20D and the mirror sheath 10 sleeved together to enter the natural passage of the human body without causing damage to the skin tissue.

In this embodiment, the mirror body 20D is a rigid mirror. After the mirror body 20D is sleeved inside the mirror sheath 10, the bending of the mirror body 20D can be adjusted through the control unit 26D. The active bending of the mirror body 20D drives the passive bending of the mirror sheath 10 , so that both of them enter the human body as a whole to perform corresponding operations.

It should be understood by those skilled in the art that the embodiments of the present invention shown in the foregoing description and drawings are only examples and do not limit the present invention. The objects of the present invention have been fully and effectively accomplished. The functions and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may have any deformation or modification without departing from the principles.

Claims (15)

1. A combined ureteroscope, characterized in that it comprises: a mirror sheath having a main channel, a suction channel port communicating with the main channel, and including a mirror connecting portion; and A mirror body, the mirror body includes a sheath connection part, at least one lighting element, an imaging element and has a working channel, which is suitable for placing a surgical instrument and perfusing liquid through the working channel, wherein the lighting element and the The imaging element is located at the front end of the mirror body, and the mirror body is detachably and rotatably sleeved inside the mirror sheath through the connection between the sheath connecting portion and the mirror connecting portion, wherein the The mirror body is located in the main channel, and a suction channel that communicates with the main channel and the suction channel opening is formed between the outer wall of the mirror body and the inner wall of the mirror sheath. By changing the mirror The position between the body and the mirror sheath is used to change the size of the suction channel. 2. The combined ureteroscope according to claim 1, wherein said mirror body comprises a mirror front section and a mirror rear section, said mirror front section is connected to the front part of said mirror rear section, and said sheath connecting portion is It is arranged on the rear section of the mirror, wherein the front section of the mirror includes a curved section and a main body section, the main section is connected between the curved section and the rear section of the mirror, and the mirror body also includes a control unit , the control unit includes a control element and at least one control line, the control line is connected between the control element and the bending section, the control element is arranged on the rear section of the mirror, by operating the The control element adjusts the length of the control wire to control the bending direction and bending angle of the bending section, wherein the bending section is suitable for bending to drive the mirror sheath sleeved outside the mirror body to bend. 3. The combination ureteroscope according to claim 2, wherein said sheath comprises a sheath front, a sheath rear and a sheath side, wherein said sheath front is connected to said scope the front portion of the sheath rear portion, the sheath side portion extending outwardly at the junction between the mirror sheath front portion and the mirror sheath rear portion, the mirror connection portion being disposed on the mirror sheath rear portion , the front part of the mirror sheath matches the front part of the mirror, and the rear part of the mirror sheath matches the rear part of the mirror, so that the mirror body is movably socketed inside the mirror sheath, wherein the The suction channel opening is arranged at the side part of the mirror sheath, and the working channel passes through the front part of the mirror sheath and the rear part of the mirror sheath. 4. The combined ureteroscope according to claim 3, wherein said mirror body also has a perfusion hole and a working channel opening which are independent of each other, all of which are arranged at the rear section of the mirror and respectively connected to the working channel connected. 5. The combined ureteroscope according to claim 4, wherein said mirror sheath has a main passage opening, a mounting opening and a suction control hole communicating with said main passage, said main passage opening and said main passage opening The installation openings are respectively arranged at the front end of the front section of the mirror and the rear end of the rear part of the mirror sheath, wherein the mirror body is adapted to enter the main passage through the installation openings, and from the main passage along the main passage The mouth is stretched out to perform corresponding operations, wherein the suction channel opening and the suction control hole are both connected to the suction channel, and a negative pressure environment is formed through the suction channel opening to promote the gravel at the lesion to pass through the suction channel in turn. The channel and the suction channel opening are discharged, and the suction force of the suction channel opening is controlled by adjusting the size of the suction control hole. 6. The combined ureteroscope according to claim 5, wherein the mirror sheath further comprises a seal, the seal is arranged on the inner wall at the rear of the mirror sheath, and is located between the suction control hole and the suction control hole. Between the installation openings, wherein the sealing member has an opening and closing portion, and the mirror body is adapted to pass through the opening and closing portion, so that the sealing member is sleeved on the outside of the mirror body to seal the suction aisle. 7. The combined ureteroscope according to any one of claims 2 to 6, wherein the front part of the sheath comprises an inner lining layer, a curved layer and a protective layer, wherein the curved layer is arranged on the inner Between the lining layer and the protective layer, the curved layer has a spiral structure, the curved layer includes a dense part and a loose part, and the dense part is arranged in front of the loose part. 8. The combined ureteroscope according to claim 7, wherein the curved section of the mirror body includes an inclined end and a flat end integrally formed, and the illuminating element and the imaging element are arranged on the The flat end, the control line is connected to the inclined end, so that the bending of the inclined end drives the bending of the mirror body and the mirror sheath. 9. The combined ureteroscope according to any one of claims 1 to 6, wherein the combined ureteroscope further comprises an auxiliary inner core matched with the main channel, and the auxiliary inner core passes through the main channel It is detachably sleeved inside the mirror sheath to support the mirror sheath, wherein the auxiliary inner core includes a guide section and a support section, the guide section is connected to the front part of the support section, and the guide section The top of the segment has a rounded tip to guide the sheath into the body. 10. The combined ureteroscope according to claim 7, wherein the connecting part of the scope and the connecting part of the sheath is connected by clamping, screwing, buckling or magnetic attraction. 11. The combined ureteroscope according to claim 9, wherein the connecting part of the scope and the connecting part of the sheath is connected by clamping, screwing, buckling or magnetic attraction. 12. The combined ureteroscope according to claim 11, wherein the curved section is a serpentine or helical structure. 13. The combined ureteroscope according to claim 12, wherein the auxiliary inner core has predetermined strength and toughness, and the auxiliary inner core is made of rubber material. 14. A combined ureteroscope, characterized in that it comprises: A mirror sheath, the mirror sheath has a main channel, a suction channel opening communicated with the main channel and includes a mirror connecting part; A mirror body, the mirror body includes a sheath connection part, at least one lighting element, an imaging element and has a working channel, which is suitable for placing a surgical instrument and perfusing liquid through the working channel, wherein the lighting element and the The imaging element is located at the front end of the mirror body, and the mirror body is detachably socketed inside the mirror sheath through the connection between the sheath connecting part and the mirror connecting part, wherein the mirror body is located at In the main channel, a suction channel that communicates with the main channel and the suction channel opening is formed between the outer wall of the mirror body and the inner wall of the mirror sheath. By changing the mirror body and the position between the mirror sheaths to change the size of the suction channel; and An auxiliary inner core, the auxiliary inner core is matched with the main channel, so as to be detachably socketed inside the mirror sheath through the main channel, wherein the auxiliary inner core includes a guiding section and a supporting section and a connection section, wherein the support section is integrally formed between the guide section and the connection section, wherein the connection section is detachably connected to the rear end of the mirror sheath. 15. The combined ureteroscope according to claim 14, wherein said mirror body also has a perfusion hole and a working channel opening which are independent of each other, all of which are arranged at the rear section of the mirror and respectively connected to the working channel The mirror sheath has a main passage opening, a mounting opening and a suction control hole communicating with the main passage, the main passage opening and the installation opening are respectively arranged at the front end of the mirror front section and the The rear end of the rear part of the mirror sheath, wherein the mirror body is adapted to enter the main passage through the installation opening, and protrude from the main passage opening along the main passage to perform corresponding operations, wherein the suction The channel opening and the suction control hole are all in communication with the suction channel, and a negative pressure environment is formed through the suction channel opening to promote the gravel in the lesion to be discharged through the suction channel and the suction channel opening sequentially, and then passed through the suction channel. The size of the suction control hole is adjusted to control the suction force of the suction channel opening.

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