CN219921177U

CN219921177U - Ureteral soft lens guiding sheath tube

Info

Publication number: CN219921177U
Application number: CN202321214862.5U
Authority: CN
Inventors: 邓学斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-10-31
Anticipated expiration: 2033-05-18

Abstract

The utility model relates to the technical field of surgical instruments, and discloses a ureteroscope guiding sheath tube which comprises a sheath tube, wherein the end surface of one end of the sheath tube is a concave-convex surface, and the concave-convex surface is in smooth transition with the wall surface of the sheath tube; a water outlet is arranged on the side wall of the proximal end of the sheath tube; the sheath tube is made of transparent materials. The ureteral soft lens guiding sheath tube can effectively improve the operation efficiency and safety and reduce the loss of surgical instruments.

Description

Ureteral soft lens guiding sheath tube

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a ureteral soft lens guiding sheath tube.

Background

With the progress of the development of the scientific technology, the modern surgical operation is rapidly developed towards the minimally invasive technology, and particularly the urology surgery is the leading person. With the development of minimally invasive surgery, matched surgical instruments are continuously updated, and good surgical instruments can help doctors to finish surgery smoothly and efficiently, reduce complications of surgery and improve the safety and success rate of surgery. In the current surgical treatment of renal pelvis and renal calyx calculus, conditional hospitals and technical doctors basically adopt minimally invasive transurethral ureteral soft-lens lithotripsy and lithotripsy operations for treating cases conforming to indications.

In the prior art, a transurethral ureter operation channel is established, generally, a ureter guiding sheath tube is adopted, a guide wire is arranged for guiding and expanding, and then the sheath tube is arranged to be used as an operation lithotriptic stone extraction channel.

However, the existing transurethral ureter guiding sheath has the following disadvantages in use:

1. the head end of the sheath tube is a transverse plane, and the calculus is observed and treated only by entering the ureteroscope through the port, and because the port area of the flat end is smaller, the scope body occupies a larger space, so that the drainage displacement of the sheath tube is reduced, the intra-operative renal pelvis pressure is increased, and the probability of surgical infection diffusion is increased.

2. By adopting the prior sheath, the sheath port and the ureter soft endoscope directly enter the renal pelvis at a nearly right angle, so that the friction between the endoscope body and the sheath wall is increased during operation, the outer membrane of the endoscope body and even the main body of the endoscope body are easily damaged, the service life of the endoscope body is reduced, and the use cost of surgical instruments is increased.

3. Because the sheath tube port is right-angled with the renal pelvis and has smaller sectional area, when the calculus is removed after the calculus is crushed, the calculus enters the sheath tube smoothly, the calculus removing efficiency of the operation is affected, the operation time is prolonged, and the risk of the operation is increased.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the ureteral soft lens guiding sheath, which effectively improves the operation efficiency and safety and reduces the loss of surgical instruments.

In order to solve the technical problems, the utility model provides a ureteroscope guiding sheath tube which comprises a sheath tube, wherein the end face of one end of the sheath tube is a concave-convex surface, and the concave-convex surface is in smooth transition with the wall surface of the sheath tube.

As an improvement of the above scheme, the concave-convex surface is a wave surface or a saw tooth surface.

As an improvement of the scheme, the concave-convex surface comprises a convex surface and a concave surface, the convex surface and the concave surface are cambered surfaces, and the convex surface is tangent to the concave surface.

As an improvement of the scheme, the surgical puncture device further comprises a sheath core, wherein a hollow channel penetrating the sheath core is arranged in the axial direction of the sheath core so as to be inserted into the puncture guide wire, and the sheath core extends into the sheath tube from the other end of the sheath tube and is abutted with the sheath tube when the surgical puncture device is used for placing a tube.

As an improvement of the above-mentioned scheme, the sheath tube is provided with a water outlet, and the water outlet penetrates through the sheath wall of the sheath tube.

As an improvement of the above, the sheath tube comprises a head end, a middle part and a tail end; the concave-convex surface is arranged at the head end, a sealing cap bayonet is arranged at the tail end of the sheath tube, a sealing cap is arranged on the sheath core, and the sealing cap is fixed at the tail end of the sheath tube through the sealing cap bayonet.

As an improvement of the above-mentioned scheme, the drain port is provided at one end of the sheath tube near the concave-convex surface.

As an improvement of the scheme, the sheath tube is made of transparent materials, indication marks are arranged at the head end and the middle part of the sheath tube, and the middle part of the sheath tube is provided with a size;

the wall surface of the head end of the sheath tube is provided with a color mark.

As an improvement of the above-mentioned scheme, the sheath core is provided with a hand-held part.

As an improvement of the scheme, the transparent material is transparent soft rubber;

the sheath core is made of hard materials.

The implementation of the utility model has the following beneficial effects:

the utility model discloses a ureteroscope guiding sheath, which is characterized in that the end face of one end of the sheath is provided with a concave-convex surface, so that the area of the end face is obviously increased compared with that of a conventional plane circular ring-shaped end face, the drainage smoothness of a port can be obviously increased under the condition of instrument operation, the intra-operative renal pressure is obviously and effectively reduced, the infection diffusion probability caused by an operation is reduced, and the safety is improved;

in addition, the concave-convex surface and the wall surface of the sheath tube are arranged to be in smooth transition, when the ureter soft endoscope body is placed into the renal pelvis from the port, the angle of entering the renal pelvis is smoother, the friction and the bending between the endoscope body and the sheath tube are reduced, the damage to the endoscope body is smaller, the service life of the endoscope body can be effectively prolonged, and the loss of surgical instruments is reduced;

the concave-convex surface at one end of the sheath tube is in smooth transition with the wall surface of the sheath tube, so that the sheath tube is in smoother contact with the renal pelvis, and the sectional area is larger, thereby helping to smoothly take out stones during the stone extraction in the operation and improving the operation efficiency;

the drainage port penetrating through the sheath wall of the sheath tube is arranged at the proximal end side of the sheath tube, so that the drainage of hydronephrosis in operation can be facilitated more timely, the intra-renal pressure can be reduced, and the probability of infection diffusion caused by intra-renal pressure in operation can be reduced;

the sheath tube is made of transparent materials, so that the conditions of the sheath tube, surrounding tissues and stones can be observed in operation, the conditions of damage and stones downward moving in operation can be found in time, the treatment is rapid, and the surgical complications and the possibility of stones residues are reduced.

Drawings

FIG. 1 is a schematic view of a combination sheath and sheath core of an embodiment of a ureteroscope guiding sheath according to the present utility model;

FIG. 2 is a schematic structural view of a sheath;

fig. 3 is a schematic structural view of the sheath core.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

As shown in fig. 1, this embodiment provides a ureteral soft endoscope guiding sheath, which includes a sheath 1, an end surface of one end of the sheath 1 is a concave-convex surface 111, and the concave-convex surface 111 and a wall surface of the sheath 1 are in smooth transition.

In the embodiment, the end face of one end of the sheath tube 1 is set to be the concave-convex face 111, so that the area of the end face is obviously increased compared with that of a conventional plane circular ring-shaped end face, the drainage smoothness of the end face can be obviously increased under the condition of instrument operation, the intra-operative renal pressure is obviously and effectively reduced, the infection diffusion probability caused by an operation is reduced, and the safety is improved; in addition, the concave-convex surface 111 and the wall surface of the sheath tube 1 are arranged to be in smooth transition, when the ureter soft endoscope body is placed into the renal pelvis from the port, the angle of entering the renal pelvis is smoother, the friction and bending between the endoscope body and the sheath tube 1 are reduced, the damage to the endoscope body is smaller, the service life of the endoscope body can be effectively prolonged, and the loss of surgical instruments is reduced; the concave-convex surface 111 at one end of the sheath tube 1 is in smooth transition with the wall surface of the sheath tube 1, so that the contact with the renal pelvis is smoother, the calculus can be smoothly taken out during the calculus taking operation, and the operation efficiency is improved.

With reference to fig. 2, the sheath 1 includes a head end 11, a middle portion 12, and a tail end 13.

The concave-convex surface 111 is provided at the head end 11. The concave-convex surface 111 is preferably smoothly connected to the outer wall surface and the inner wall surface of the sheath 1.

The sheath tube 1 in this embodiment is preferably made of transparent soft rubber, so that 360-degree full-angle observation of the position of the connection part between the renal pelvis and the ureter under the microscope, and the distance, direction and direction between the kidney stones and the port of the sheath tube 1 and the wall surface of the sheath tube 1 can be realized, and the whole operation field can be comprehensively observed. The device has wide observation range, clear observation effect and accurate observation result, and is beneficial to rapidly searching, capturing and treating calculi in operation. Especially under the condition of bleeding and unclear visual field in the operation, the utility model can also observe more comprehensively, complete the operation rapidly and improve the safety of the operation. Meanwhile, the transparent sheath tube 1 is adopted, so that the placement position and depth of the sheath tube 1 can be clearly observed under a lens, and whether the sheath tube 1 is placed too deeply, damaged and the like is observed, thereby reducing the occurrence of surgical complications and reducing the surgical risk. And the wall of the sheath tube 1 is transparent, so that the situation that stones fall into the ureter during operation can be observed, the stones can be found in time and treated, and the stone residues during operation and the probability of secondary operation are reduced.

The outer wall of sheath 1 of this embodiment is equipped with the instruction sign, the instruction sign is located head end 11 and the middle part 12 of sheath 1, the middle part of sheath 1 is equipped with size 121, the wall of head end 11 of sheath 1 is equipped with the colour sign, can clearly indicate sheath 1 port, sheath 1 and renal pelvis relative position and distance condition to reduce sheath 1 and put into the intraoperative damage that the degree of depth leads to in the reduction.

As a preferred embodiment of the indication mark, the indication mark is a thickened color line; the function of more clearly prompting the port is achieved, and the relative positions and distances between the port and the renal pelvis, the calculus and the tissues are easily identified.

As another preferred embodiment of the indication mark, the indication mark is a fluorescent color line to better play a role of the indication mark.

Preferably, the head end 11 of the sheath 1 is a wavy or serrated surface.

More preferably, the concave-convex surface 111 includes a convex surface and a concave surface, the convex surface and the concave surface are both cambered surfaces, and the convex surface is tangent to the concave surface.

The area of the concave-convex surface 111 is obviously increased compared with the area of the conventional plane annular end surface, so that the drainage smoothness of the port can be obviously increased under the condition that the end of the sheath tube 1 is operated by instruments, the intra-operative renal pressure can be obviously and effectively reduced, and the infection diffusion probability caused by the operation is reduced; the end face of the concave-convex surface 111 is round and more smooth than the plane annular end face, when the ureter soft endoscope body is placed into the renal pelvis from the port, the angle of entering the renal pelvis is smaller, the friction and bending between the endoscope body and the sheath tube 1 are reduced, the damage to the endoscope body is smaller, and the service life of the endoscope body can be effectively prolonged; when the stone is required to be fetched in the operation, the stone can be more smoothly fetched, and the stone fetching efficiency is improved.

The proximal end 11 side of the sheath tube 1 (i.e. the end of the sheath tube 1 close to the concave-convex surface 111) is provided with a water outlet 112, and the water outlet 112 penetrates through the sheath wall of the sheath tube 1, so that timely evacuation of hydronephrosis in operation can be facilitated, intra-renal pressure can be reduced, and infection diffusion probability caused by intra-renal pressure in operation can be reduced.

The tail end 13 of the sheath tube 1 is provided with a cap bayonet 131, and the cap bayonet 131 is horn-shaped, so that the surgical instrument can enter the sheath tube 1 to work, and the use is convenient.

After the guide wire is successfully placed into the urethral ureter during the operation, the sheath tube 1 is placed into the urethral ureter to form a channel for lithotripsy and lithotomy.

In order to facilitate the placement of the sheath tube 1, the ureteroscope guiding sheath tube of the embodiment also comprises a sheath core 2. With reference to fig. 3, the sheath core 2 is provided with a hollow channel 21 extending therethrough in the axial direction, and a guide wire can be placed in the hollow channel 21 of the sheath core 2.

When the operation is put into a tube, the sheath core 2 stretches into the sheath tube 1 from the other end of the sheath tube 1 and is abutted with the sheath tube 1 to form a combined sleeve, the combined sleeve is slowly pushed into the connecting part of the renal calyx ureter along the guiding guide wire, and a lithotriptic stone taking channel is established.

Specifically, when in use, a guide wire is firstly placed through the ureteral hard endoscope, and then the combined sleeve of the sheath tube 1 and the sheath core 2 with corresponding sizes is slowly pushed into the connecting part of the renal calyx and the ureter along the guide wire; the sheath core 2 is withdrawn, and the transparent sheath tube 1 with the ruler mark is reserved; introducing stone crushing tools such as laser and an ultrasonic stone crusher to carry out stone crushing operation; after lithotripsy and stone extraction, a guide wire is reserved and then the sheath tube 1 is withdrawn.

The sheath tube 1 and the sheath core 2 of the present utility model may be manufactured in different series of sizes according to the sizes and lengths of the sheath tube 1 and the sheath core 2.

Wherein the sheath core 2 is preferably made of a hard material, such as a hard glue or plastic.

The sheath core 2 is provided with a holding part 22 and a sealing cap 23, the sealing cap 23 is fixed at the tail end 13 of the sheath tube 1 through a bayonet of the sealing cap 23 when the operation is performed, so that the sheath core 2 and the sheath tube 1 form a combined sleeve, the sheath core 2 is pushed by the holding part 22, and the sheath tube 1 is driven to move to the connecting part of the renal calyx ureter.

In conclusion, the ureter soft lens guiding sheath tube has a simple structure, is easy to observe during operation, can effectively improve operation efficiency and safety, reduces operation complications and operation failure probability, and achieves the effects of improving operation efficiency, safety and success rate; meanwhile, the damage of the sheath tube 1 to the ureteral soft lens body during operation is reduced, the service life of the ureteral soft lens is prolonged, and the use cost of surgical instruments can be obviously reduced through long-term calculation.

The above disclosure is only a preferred embodiment of the present utility model, and it is needless to say that the scope of the utility model is not limited thereto, and therefore, the equivalent changes according to the claims of the present utility model still fall within the scope of the present utility model.

Claims

1. The ureteroscope guiding sheath is characterized by comprising a sheath, wherein the end face of one end of the sheath is a concave-convex surface, and the concave-convex surface and the wall surface of the sheath are in smooth transition.

2. The ureteral soft-mirror guiding sheath according to claim 1, characterized in that the concave-convex surface is a wavy surface or a serrated surface.

3. The ureteral soft lens guiding sheath according to claim 1, characterized in that the concave-convex surface comprises a convex surface and a concave surface, the convex surface and the concave surface are both cambered surfaces, and the convex surface is tangent to the concave surface.

4. The ureteroscope introducer sheath according to any of claims 1 to 3, further comprising a sheath core having a hollow passage axially therethrough for placement of a puncture guide wire, the sheath core extending into the sheath from the other end of the sheath and abutting the sheath during surgical placement.

5. The ureteroscope steering sheath according to claim 1, characterized in that the sheath is provided with a drainage opening which penetrates the sheath wall of the sheath.

6. The ureteroscope guiding sheath according to claim 4, characterized in that the sheath comprises a head end, a middle part and a tail end, the concave-convex surface is arranged at the head end, the tail end of the sheath is provided with a cap-sealing bayonet, the sheath core is provided with a cap, and the cap is fixed at the tail end of the sheath through the cap-sealing bayonet when the catheter is placed in operation.

7. The ureteral soft lens guiding sheath according to claim 5, characterized in that the water outlet is provided at an end of the sheath near the concavo-convex surface.

8. The ureteroscope guiding sheath according to claim 6, characterized in that the sheath is made of transparent materials, the head end and the middle part of the sheath are provided with indication marks, and the middle part of the sheath is provided with a size;

9. The ureteral soft lens guiding sheath according to claim 4, characterized in that the sheath core is provided with a hand-held portion.

10. The ureteral soft lens guiding sheath according to claim 8, characterized in that the transparent material is transparent soft gel;

the sheath core is made of hard materials.