CN114533262A - Negative pressure optical fiber fixing suction tube connected with ureteroscope - Google Patents

Abstract

The invention relates to the technical field of medicine, in particular to a negative pressure optical fiber fixing and attracting tube connected with a ureteroscope, which comprises a negative pressure tube and a laser optical fiber, wherein the laser optical fiber is fixedly arranged in the negative pressure tube; the optical fiber fixing device comprises a fixing end and a connecting end, the fixing end comprises a first support frame, a sleeve and a first thread section, the first support frame is fixedly arranged in the fixing end, the sleeve is fixedly arranged on the first support frame, and the first thread section is fixedly arranged on the inner wall of the fixing end; the connecting end comprises a second supporting frame, an elastic rod, a chuck and a second thread section, the second supporting frame is fixedly installed inside the connecting end, the two ends of the elastic rod are fixedly connected with the second supporting frame and the chuck respectively, the second thread section is fixedly arranged inside the connecting end, and the first thread section is in threaded connection with the second thread section. The application solves the defect that the laser fiber slides due to the accidental pulling outside in the operation to influence the ureteral lithotripsy operation.

Description

A negative pressure optical fiber fixed suction tube connected to a ureteroscope

technical field

The invention relates to the technical field of medicine, in particular to a negative pressure optical fiber fixed suction tube connected to a ureteroscope.

Background technique

Rigid ureteroscopic lithotripsy is faced with the following problems. Stones are easy to ascend to the kidney, which requires secondary surgery or flexible endoscopic surgery or extracorporeal shock wave lithotripsy, which increases the pain and burden of patients. The commonly used stone occluder, stone basket, etc. have limitations; under rigid ureteroscope, the stone cannot be flushed too fast, otherwise the stone will easily ascend to the renal pelvis, but the slow flushing will cause the local temperature to be too high during the laser lithotripsy process. High, resulting in "boiled ureter", followed by serious complications such as ureteral stenosis, resulting in loss of renal function; although the current equipment such as Shuotong mirror can be suctioned with negative pressure to reduce the problems of stone ascending and slow flushing, but the The outer sheath of the open endoscope is thick, which cannot be placed in some patients, and the cost of each set is high.

Chinese patent CN202110115876.0 discloses an inner flushing stainless steel sheath that can be connected to negative pressure suction for ureteroscopic surgery. By setting a negative pressure drainage mechanism, when the stone debris in the ureter needs to be cleaned, the negative pressure The drainage mechanism is connected to the ureter through the drainage access pipe, and then the negative pressure pump is turned on to introduce the stone debris in the ureter into the negative pressure tank through the drainage access pipe. The outlet is led out to achieve the effect of cleaning the stone debris in the ureter, and the negative pressure generated at the same time can well achieve the function of decompression.

However, the laser fiber is easy to slide during the lithotripsy process, which damages the ureter and ureteroscope. Therefore, it is urgent to design a negative pressure fiber fixed suction tube that can stably fix the fiber to prevent the laser fiber from being accidentally pulled outside during surgery. Sliding, thereby affecting the ureteral lithotripsy.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a negative pressure optical fiber fixed suction tube connected to a ureteroscope to solve the problems in the prior art.

In order to solve the prior art problem, the technical scheme adopted in the present invention is:

A negative pressure optical fiber fixed suction tube connected to a ureteroscope, comprising a negative pressure tube and a laser optical fiber, the laser optical fiber is fixedly installed in the negative pressure tube, and the axis of the laser optical fiber is collinear with the axis of the negative pressure tube; it also includes an optical fiber holder, an optical fiber The fixer includes a fixed end and a connecting end, the fixed end and the connecting end are straight round pipes, the fixed end includes a first support frame, a sleeve and a first threaded section, the first support frame is fixedly installed inside the fixed end, and the sleeve is fixedly installed On the first support frame, the sleeve is in the shape of a horn, and the first threaded section is fixedly arranged on the inner wall of the fixed end; the connecting end includes a second support frame, an elastic rod, a chuck and a second threaded section, and the second support frame is fixedly installed on Inside the connecting end, a plurality of elastic rods are arranged, and the plurality of elastic rods are arranged symmetrically along the axis of the connecting end. The first thread segment and the second thread segment are threadedly connected.

Preferably, it also includes a joint fixing assembly, the joint fixing assembly includes a mounting frame, a flexible cone and a limit block, the mounting frame is slidably installed on the connecting end, and the thin end of the flexible cone is fixed to the end of the connecting end away from the second thread segment connection, the thick end of the flexible taper block is fixedly connected with the limit block, and the outer diameter of the limit block is larger than the thick end of the flexible taper block.

Preferably, the joint fixing assembly further includes a connecting rod and an elastic member, there are multiple connecting rods, the multiple connecting rods are symmetrically arranged along the axis of the mounting frame, the connecting rods are fixedly connected to the mounting frame, and the elastic members are provided with a plurality of them and are connected with the mounting frame. The connecting rods are in one-to-one correspondence, and the two ends of the elastic piece are respectively fixedly connected with the connecting rod and the connecting end.

Preferably, the negative pressure pipe includes a negative pressure suction port and a negative pressure pump, the negative pressure suction port is fixedly arranged on the main pipe of the negative pressure pipe and communicated with the negative pressure pipe, and the negative pressure pump is fixedly installed on the negative pressure suction port.

Preferably, it also includes a camera assembly, the camera assembly includes a mounting ring and a camera, the mounting ring is fixedly sleeved on the negative pressure tube, and the camera is fixedly mounted on the mounting ring.

Preferably, the fixed end further includes an anti-slip pattern, and the anti-slip pattern is fixedly arranged on the outer surface of the fixed end.

Preferably, the joint fixing assembly further includes a rotary sealing ring, the rotary sealing ring is fixedly mounted on the mounting frame, and when the fixed end is in contact with the mounting frame, the rotary sealing ring is located between the mounting frame and the fixed end.

Preferably, the negative pressure suction port and the negative pressure pipe are integrally formed stainless steel thin-walled straight round pipe.

Preferably, the optical fiber holder further comprises a flared socket, and the thin end of the flared socket is fixedly connected with the end of the fixed end.

Preferably, the chuck is a ball made of flexible material.

The beneficial effects of the present application compared to the prior art are:

1. The application realizes fixing the position of the laser fiber in the lithotripsy process through a negative pressure tube, a laser fiber and an optical fiber holder, preventing damage to the function of the ureter and the ureteroscope, and solving the problem that the laser fiber in the operation is caused by external inadvertent pulling to cause it to occur. Sliding, defects affecting ureteral lithotripsy operations.

2. The application realizes the function of quickly and stably fixing the connection end to the negative pressure tube through the mounting frame, the flexible cone block and the limit block, and solves the problem that the optical fiber holder still has the equipment of the application for one-time use, so every use When the connection end needs to be installed on the negative pressure tube, the position of the laser fiber can be fixed by matching the connection end and the fixed end, and the connection between the connection end and the negative pressure tube may not be stable enough to cause the laser fiber to loosen.

3. The present application realizes the function of automatic reset of the mounting frame through the connecting rod and the elastic member, which solves the defect that the mounting frame in the joint fixing assembly needs to be manually reset and the steps are complicated when disassembling the optical fiber holder.

4. The application realizes the function of generating negative pressure through the negative pressure suction port and the negative pressure pump, and sucking the stone around the laser fiber, and solves how the negative pressure pipe realizes the generation of negative pressure to form a water circulation, preventing the water flow from rushing the gravel to the surface. Technical problems with the renal pelvis.

5. The application realizes the function of real-time observation of the picture around the negative pressure tube through the camera assembly composed of the installation ring and the camera, which solves the problem that the application still has a lithotripsy operation, and the operator can only observe the picture around the optical fiber, but cannot observe the negative pressure. Deficiencies in the specific circumstances of the work process.

6. The present application achieves the function of improving the anti-skid ability of the outer surface of the fixed end through the anti-skid pattern, and solves the defect that the force strength needs to be increased to prevent slipping when the fixed end is rotated.

7. The present application achieves the function of improving the tightness of the connection between the mounting frame and the fixed end by rotating the sealing ring, and solves the defect of insufficient tightness of the connection between the mounting frame and the fixed end in the joint fixing assembly.

8. The present application achieves the function of enhancing the structural stability of the negative pressure pipe by integrally forming the negative pressure suction port and the negative pressure pipe, and solves the defect of the unstable structure of the negative pressure pipe.

9. The present application realizes the function of simplifying a negative pressure optical fiber fixed suction tube connected to a ureteroscope to enter the ureteral operation channel through the bell sleeve mouth, and reaches the function of the calculus, and solves the defect that the fixed end optical fiber is not easy to enter the ureteral operation channel.

10. In the present application, by designing the collet as a round head made of a flexible material, the defect that the operator tightens the fixed end too tightly, causing the collet to pinch the laser fiber.

Description of drawings

1 is a perspective view of the application;

Fig. 2 is the separation perspective view of the present application;

Fig. 3 is the partial enlarged view of A in Fig. 2 of the present application;

4 is a perspective view of a fixed end of the present application;

Fig. 5 is the front view of the connection end of the present application;

Fig. 6 is the separation perspective view of the connection end of the present application;

Fig. 7 is the partial enlarged view of C in Fig. 6 of the present application;

8 is a perspective view of a camera device of the present application;

Figure 9 is a front view of the application;

Fig. 10 is the left side view of the optical fiber holder of the present application;

The label in the figure is:

1-negative pressure pipe; 1a-negative pressure suction port; 1b-negative pressure pump;

2-laser fiber;

3-fiber holder; 3a-fixed end; 3a1-first support frame; 3a2-sleeve; 3a3-first thread segment; Rod; 3b3 - collet; 3b4 - second thread segment; 3c - flare socket;

4-joint fixing assembly; 4a-mounting frame; 4b-flexible cone; 4c-limiting block; 4d-connecting rod; 4e-elastic part; 4f-rotating sealing ring;

5-camera assembly; 5a-installation ring; 5b-camera.

Detailed ways

In order to further understand the features, technical means, and specific goals and functions of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1-5 and Figure 10:

A negative pressure optical fiber fixed suction tube connected to a ureteroscope, comprising a negative pressure tube 1 and a laser optical fiber 2, the laser optical fiber 2 is fixedly installed in the negative pressure tube 1, and the axis of the laser optical fiber 2 is collinear with the axis of the negative pressure tube 1; Also includes an optical fiber holder 3, the optical fiber holder 3 includes a fixed end 3a and a connecting end 3b, the fixed end 3a and the connecting end 3b are straight round pipes, and the fixed end 3a includes a first support frame 3a1, a sleeve 3a2 and a first thread segment 3a3, the first support frame 3a1 is fixedly installed inside the fixed end 3a, the sleeve 3a2 is fixedly installed on the first support frame 3a1, the sleeve 3a2 is trumpet-shaped, and the first threaded section 3a3 is fixedly arranged on the inner wall of the fixed end 3a; the connecting end 3b includes a second support frame 3b1, an elastic rod 3b2, a collet 3b3 and a second threaded section 3b4. The second support frame 3b1 is fixedly installed inside the connecting end 3b, and there are multiple elastic rods 3b2, and the plurality of elastic rods 3b2 are connected along the The axis center of the end 3b is symmetrically arranged, the two ends of the elastic rod 3b2 are fixedly connected with the second support frame 3b1 and the collet 3b3 respectively, the second thread segment 3b4 is fixedly arranged on the outside of the connection end 3b, the first thread segment 3a3 and the second thread Segment 3b4 threaded connection.

Based on the above embodiments, the technical problem to be solved by the present application is how to prevent the laser fiber 2 from sliding under the influence of external force during the operation. For this reason, the present application realizes fixing the position of the laser fiber 2 during the lithotripsy process through the negative pressure tube 1, the laser fiber 2 and the fiber holder 3, preventing damage to the ureter and the function of the ureteroscope, and solving the problem that the laser fiber in the operation is caused by external Inadvertent pulling makes it slip, affecting the defects of ureteral lithotripsy. The negative pressure tube 1 is electrically connected to the controller; the operator first inserts the laser fiber 2 into the main tube of the negative pressure tube 1, then installs the connecting end 3b on the negative pressure tube 1, and then rotates the fixed end 3a to the connecting end 3b , screw the fixed end 3a to the connection end 3b through the threaded cooperation of the first thread segment 3a3 and the second thread segment 3b4. As the fixed end 3a approaches the connection end 3b, the first support frame 3a1 is also connected to the second support frame 3b1. When the sleeve 3a2 is in contact with the collet 3b3, the collet 3b3 is squeezed as the sleeve 3a2 continues to move, and the elastic rod 3b2 is pulled along with the extrusion of the collet 3b3, and the elastic rod 3b2 is deformed after being stressed, thereby Drive the chucks 3b3 to approach each other, thereby squeezing the laser fiber 2, fixing the laser fiber 2, and finally placing the suction tube fixed by the negative pressure optical fiber into the ureteroscope operating channel, and then fixing the gap between the suction tube through the operating channel and the negative pressure optical fiber Water enters, and the controller sends a signal to the negative pressure tube 1 and the laser fiber 2. After the laser fiber 2 receives the signal, the stone crushing step is performed. After the negative pressure tube 1 receives the signal, it generates a negative pressure and sucks the stone around the fiber. , forming a water circulation, preventing the water flow from rushing the gravel to the renal pelvis, the overall equipment of the present application is simple, the cost is low, and it is disposable.

Further, the optical fiber holder 3 provided by the present application still has the device of the present application for one-time use. Therefore, the connecting end 3b needs to be installed on the negative pressure tube 1 each time it is used, so that the connecting end 3b and the fixed end 3a are matched together. Fix the position of the laser fiber 2, but the connection between the connecting end 3b and the negative pressure tube 1 may not be stable enough, which may lead to the defect of the loose laser fiber 2. In order to solve this problem, as shown in Figure 5-6:

The present application also includes a joint fixing assembly 4. The joint fixing assembly 4 includes a mounting bracket 4a, a flexible taper block 4b and a limit block 4c. The mounting bracket 4a is slidably mounted on the connecting end 3b, and the thin end of the flexible taper block 4b is connected to the connecting end 3b. One end away from the second threaded segment 3b4 is fixedly connected, and the thick end of the flexible taper block 4b is fixedly connected with the limit block 4c, the outer diameter of the limit block 4c is larger than the thick end of the flexible taper block 4b.

Based on the above embodiments, the technical problem to be solved by the present application is how to quickly fix the connecting end 3b to the negative pressure pipe 1 . To this end, the present application achieves the function of quickly and stably fixing the connecting end 3b to the negative pressure pipe 1 through the mounting bracket 4a, the flexible cone block 4b and the limiting block 4c. The operator rotates the fixed end 3a to the connecting end 3b, and with the movement of the fixed end 3a, the mounting bracket 4a will be pushed, and the mounting bracket 4a will slide along the connecting end 3b to squeeze the flexible cone 4b, and the flexible cone 4b will be squeezed Deformation is generated, so as to be close to the negative pressure pipe 1, so as to fix the connecting end 3b on the negative pressure pipe 1, and the operation is simple and fast.

Further, the connector fixing assembly 4 provided by the present application still has the defect that the installation frame 4a needs to be manually reset when the optical fiber holder 3 is disassembled, and the steps are relatively complicated. In order to solve this problem, as shown in Figure 5-7:

The joint fixing assembly 4 also includes a connecting rod 4d and an elastic member 4e. There are multiple connecting rods 4d. The multiple connecting rods 4d are symmetrically arranged along the axis of the mounting frame 4a. The connecting rod 4d is fixedly connected to the mounting frame 4a. The elastic member 4e There are a plurality of the connecting rods 4d corresponding to each other, and the two ends of the elastic member 4e are respectively fixedly connected with the connecting rod 4d and the connecting end 3b.

Based on the above embodiments, the technical problem to be solved by the present application is how to simplify the disassembly steps of the optical fiber holder 3 . Therefore, the present application realizes the function of automatic reset of the mounting bracket 4a through the connecting rod 4d and the elastic member 4e. The operator inserts the laser fiber 2 into the main pipe of the negative pressure pipe 1, then installs the connecting end 3b on the negative pressure pipe 1, and then rotates the fixed end 3a to the connecting end 3b, through the first threaded section 3a3 and the second threaded section 3b4 screw the fixed end 3a to the connecting end 3b, as the fixed end 3a approaches the connecting end 3b, the first support frame 3a1 also approaches the second support frame 3b1, when the sleeve 3a2 contacts the collet 3b3, As the sleeve 3a2 continues to move, the collet 3b3 is squeezed, and as the collet 3b3 is squeezed, the elastic rod 3b2 is pulled, and the elastic rod 3b2 is deformed after being stressed, thereby driving the collets 3b3 to approach each other, thereby squeezing the laser fiber 2 , fix the laser fiber 2, at the same time push the mounting frame 4a with the movement of the fixed end 3a, the mounting frame 4a drives the connecting rod 4d to move, the connecting rod 4d squeezes the elastic member 4e, the elastic member 4e is shortened by force, and the mounting frame 4a moves along the connection The end 3b slides to squeeze the flexible cone 4b, and the flexible cone 4b is squeezed and deformed, so as to be close to the negative pressure pipe 1, and the connecting end 3b is fixed to the negative pressure pipe 1, the operation is simple and fast; then the negative pressure The optical fiber fixed suction tube is placed into the operation channel of the ureteroscope, and then water enters through the gap between the operation channel and the negative pressure optical fiber fixed suction tube, and then sends a signal to the negative pressure tube 1 and the laser fiber 2 through the controller, and the laser fiber 2 receives After the signal arrives, perform the lithotripsy step. After receiving the signal, the negative pressure tube 1 generates negative pressure, sucks the calculus around the fiber, and forms a water circulation to prevent the water flow from rushing the calculus to the renal pelvis. After the lithotripsy operation is completed, the fiber needs to be removed to fix it. Therefore, the operator needs to reversely rotate the fixed end 3a, unscrew the fixed end 3a, and then the elastic member 4e drives the connecting rod 4d through elastic force, and the connecting rod 4d drives the mounting frame 4a to reset.

Further, in order to solve the technical problem of how the negative pressure tube 1 can generate negative pressure to form a water circulation and prevent the water flow from rushing the gravel to the renal pelvis, as shown in Figure 2:

The negative pressure pipe 1 includes a negative pressure suction port 1a and a negative pressure pump 1b, the negative pressure suction port 1a is fixedly arranged on the main pipe of the negative pressure pipe 1 and communicated with the negative pressure pipe 1, and the negative pressure pump 1b is fixedly installed in the negative pressure suction port 1a. superior.

Based on the above embodiments, the technical problem to be solved by the present application is how to generate negative pressure in the negative pressure tube 1 to form a water circulation, so as to prevent the water flow from rushing the gravel to the renal pelvis. Therefore, in the present application, a negative pressure suction port 1 a and a negative pressure pump 1 b are provided to generate negative pressure, so as to realize the function of sucking the stones around the laser fiber 2 . The negative pressure pump 1b is electrically connected to the controller; the operator first inserts the laser fiber 2 into the main pipe of the negative pressure tube 1, then installs the connecting end 3b on the negative pressure tube 1, and then rotates the fixed end 3a to the connecting end 3b , screw the fixed end 3a to the connection end 3b through the threaded cooperation of the first thread segment 3a3 and the second thread segment 3b4. As the fixed end 3a approaches the connection end 3b, the first support frame 3a1 is also connected to the second support frame 3b1. When the sleeve 3a2 is in contact with the collet 3b3, the collet 3b3 is squeezed as the sleeve 3a2 continues to move, and the elastic rod 3b2 is pulled along with the extrusion of the collet 3b3, and the elastic rod 3b2 is deformed after being stressed, thereby The chucks 3b3 are driven to approach each other, thereby squeezing the laser fiber 2 and fixing the laser fiber 2. At the same time, with the movement of the fixed end 3a, the mounting bracket 4a is pushed, and the mounting bracket 4a drives the connecting rod 4d to move, and the connecting rod 4d squeezes the elastic member 4e. , the elastic member 4e is shortened by force, the mounting bracket 4a slides along the connecting end 3b and squeezes the flexible cone 4b, the flexible cone 4b is squeezed and deformed, so as to be close to the negative pressure tube 1, and the connecting end 3b is fixed to the negative pressure On tube 1, the operation is simple and fast; then the negative pressure optical fiber fixed suction tube is placed into the operation channel of the ureteroscope, and then water is fed through the gap between the operation channel and the negative pressure optical fiber fixed suction tube, and then a signal is sent to the negative pressure through the controller. The pressure pump 1b and the laser fiber 2, the laser fiber 2 performs the stone crushing step after receiving the signal, and the negative pressure pump 1b generates a negative pressure at the negative pressure suction port 1a after receiving the signal, and sucks the water flow while sucking the stone around the fiber. , thus forming a water circulation to prevent the water flow from rushing the gravel to the renal pelvis; after the lithotripsy operation is completed, the optical fiber holder 3 needs to be disassembled, so the operator needs to reversely rotate the fixed end 3a, unscrew the fixed end 3a, and then the elastic piece 4e passes through The elastic force drives the connecting rod 4d, and the connecting rod 4d drives the mounting frame 4a to reset.

Further, the present application still has the defect that in the lithotripsy operation, the operator can only observe the picture around the optical fiber, but cannot observe the specific situation in the working process of the negative pressure tube. In order to solve this problem, as shown in Figure 1 and Figure 8:

The present application also includes a camera assembly 5, the camera assembly 5 includes a mounting ring 5a and a camera head 5b, the mounting ring 5a is fixedly sleeved on the negative pressure pipe 1, and the camera head 5b is fixedly mounted on the mounting ring 5a.

Based on the above embodiments, the technical problem to be solved by the present application is how to observe the specific situation in real time during lithotripsy surgery. To this end, the present application realizes the function of observing a specific picture in real time through the camera assembly 5 composed of the installation ring 5a and the camera head 5b. The camera 5b is electrically connected to the controller; the operator inserts the laser fiber 2 into the main pipe of the negative pressure tube 1, then installs the connecting end 3b on the negative pressure tube 1, and then rotates the fixed end 3a to the connecting end 3b, through the first thread The thread fit of the segment 3a3 and the second thread segment 3b4 tightens the fixed end 3a to the connection end 3b. As the fixed end 3a approaches the connection end 3b, the first support frame 3a1 also approaches the second support frame 3b1. When 3a2 is in contact with the collet 3b3, the collet 3b3 is squeezed as the sleeve 3a2 continues to move, and the elastic rod 3b2 is pulled along with the extrusion of the collet 3b3, and the elastic rod 3b2 deforms after being stressed, thereby driving the collet 3b3 to mutually approach, thereby squeezing the laser fiber 2, fixing the laser fiber 2, and at the same time pushing the mounting frame 4a along with the movement of the fixed end 3a, the mounting frame 4a drives the connecting rod 4d to move, the connecting rod 4d squeezes the elastic member 4e, and the elastic member 4e receives When the force is shortened, the mounting bracket 4a slides along the connecting end 3b to squeeze the flexible cone 4b, and the flexible cone 4b is squeezed and deformed, so as to be close to the negative pressure pipe 1, and the connecting end 3b is fixed to the negative pressure pipe 1. Operation Simple and fast; then place the negative pressure optical fiber fixed suction tube into the operation channel of the ureteroscope, and then enter the water through the gap between the operation channel and the negative pressure optical fiber fixed suction tube, and then send a signal to the negative pressure pump 1b and the camera through the controller 5b, the camera 5b starts after receiving the signal. The operator observes the position and state of the stone according to the picture returned by the camera 5b, and then the controller sends a signal to the laser fiber 2. After the laser fiber 2 receives the signal, the stone crushing step is performed, and the negative pressure pump 1b After receiving the signal, a negative pressure is generated at the suction port 1a, and the stone is sucked into the circumference of the fiber to form a water circulation to prevent the water flow from rushing the stone to the renal pelvis; The operator needs to reversely rotate the fixed end 3a, unscrew the fixed end 3a, and then the elastic member 4e drives the connecting rod 4d through the elastic force, and the connecting rod 4d drives the mounting frame 4a to reset.

Further, the fixed end 3a provided by the present application needs to fix or disassemble the laser fiber 2 by rotating the fixed end 3a, but the defect of slippage may occur during rotation. In order to solve this problem, as shown in Figure 4:

The fixed end 3a further includes an anti-slip pattern 3a4, and the anti-slip pattern 3a4 is fixedly arranged on the outer surface of the fixed end 3a.

Based on the above-mentioned embodiments, the technical problem to be solved by the present application is how to prevent the situation from slipping when the fixed end 3a is rotated with too little force. For this reason, the present application achieves the function of improving the anti-skid ability of the outer surface of the fixed end 3a through the anti-skid pattern 3a4. The operator inserts the laser fiber 2 into the main pipe of the negative pressure tube 1, then installs the connecting end 3b on the negative pressure tube 1, then rotates the fixed end 3a to the connecting end 3b, and improves the friction on the outer surface of the fixed end 3a through the anti-skid pattern 3a4 The coefficient prevents slippage during rotation, and tightens the fixed end 3a to the connecting end 3b through the threaded cooperation of the first threaded section 3a3 and the second threaded section 3b4. As the fixed end 3a approaches the connecting end 3b, the first support frame 3a1 is also close to the second support frame 3b1. When the sleeve 3a2 is in contact with the collet 3b3, the collet 3b3 is squeezed as the sleeve 3a2 continues to move, and the elastic rod 3b2 is pulled along with the extrusion of the collet 3b3. The rod 3b2 is deformed after being stressed, thereby driving the chucks 3b3 to approach each other, thereby squeezing the laser fiber 2 and fixing the laser fiber 2, and at the same time, with the movement of the fixed end 3a, the mounting frame 4a is pushed, and the mounting frame 4a drives the connecting rod 4d to move, The connecting rod 4d squeezes the elastic piece 4e, the elastic piece 4e is shortened by force, the mounting bracket 4a slides along the connecting end 3b to squeeze the flexible cone 4b, and the flexible cone 4b is squeezed and deformed, so as to be close to the negative pressure tube 1, The connecting end 3b is fixed on the negative pressure tube 1, and the operation is simple and rapid; then the negative pressure optical fiber fixed suction tube is placed into the ureteroscope operation channel, and then water is fed through the gap between the operation channel and the negative pressure optical fiber fixed suction tube, Then, the controller sends a signal to the negative pressure pump 1b and the camera 5b. The camera 5b starts after receiving the signal. The operator observes the position and state of the stone according to the picture returned by the camera 5b, and then the controller sends a signal to the laser fiber 2. The laser fiber 2. Perform the lithotripsy step after receiving the signal. After receiving the signal, the negative pressure pump 1b will generate negative pressure at the negative pressure suction port 1a to suck the calculus to the circumference of the optical fiber to form a water circulation to prevent the water flow from rushing the calculus to the renal pelvis; After the lithotripsy operation, the fiber holder 3 needs to be disassembled. Therefore, the operator needs to reversely rotate the fixed end 3a and unscrew the fixed end 3a. Then the elastic member 4e drives the connecting rod 4d through elastic force, and the connecting rod 4d drives the mounting frame 4a to reset.

Further, the joint fixing assembly 4 provided by the present application still has the defect of insufficient sealing at the connection between the mounting frame 4a and the fixed end 3a. In order to solve this problem, as shown in FIG. 6 :

The joint fixing assembly 4 further includes a rotary sealing ring 4f, which is fixedly mounted on the mounting bracket 4a. When the fixed end 3a is in contact with the mounting bracket 4a, the rotary sealing ring 4f is located between the mounting bracket 4a and the fixed end 3a.

Based on the above embodiments, the technical problem to be solved by the present application is how to improve the sealing performance of the connection between the mounting bracket 4a and the fixed end 3a without affecting the rotation of the fixed end 3a. Therefore, the present application achieves the function of improving the sealing performance of the connection between the mounting bracket 4a and the fixed end 3a by rotating the sealing ring 4f. Due to the relative rotation between the fixed end 3a and the mounting bracket 4a, it is not possible to use a common sealing ring to improve the sealing performance of the connection between the fixed end 3a and the mounting bracket 4a, while the rotary sealing ring 4f has high pressure resistance, wear resistance, resistance to High temperature and low friction.

Further, the negative pressure tube 1 provided by the present application still has the defect of unstable structure. In order to solve this problem, as shown in Figure 1-2:

The negative pressure suction port 1a and the negative pressure tube 1 are integrally formed stainless steel thin-walled straight round tubes.

Based on the above embodiments, the technical problem to be solved by the present application is how to improve the structural strength of the negative pressure pipe 1 . For this reason, the present application achieves the function of enhancing the structural stability of the negative pressure tube 1 by integrally molding the negative pressure suction port 1a and the negative pressure tube 1; the operator inserts the laser fiber 2 into the main pipe of the negative pressure tube 1, and then connects the 3b is installed on the negative pressure pipe 1, and then the fixed end 3a is rotated to the connecting end 3b, and the friction coefficient of the outer surface of the fixed end 3a is improved by the anti-skid pattern 3a4 to prevent slippage during rotation. The screw fit of the two threaded segments 3b4 tightens the fixed end 3a to the connecting end 3b. As the fixed end 3a approaches the connecting end 3b, the first support frame 3a1 also approaches the second support frame 3b1. When the sleeve 3a2 and the collet When 3b3 is in contact, the collet 3b3 is squeezed as the sleeve 3a2 continues to move, and the elastic rod 3b2 is pulled as the collet 3b3 is squeezed. Press the laser fiber 2 to fix the laser fiber 2, and at the same time push the mounting frame 4a with the movement of the fixed end 3a, the mounting frame 4a drives the connecting rod 4d to move, the connecting rod 4d squeezes the elastic member 4e, the elastic member 4e is shortened by force, and the installation The frame 4a slides along the connecting end 3b to squeeze the flexible taper block 4b, and the flexible taper block 4b is squeezed and deformed, so as to be in close contact with the negative pressure tube 1, and the connecting end 3b is fixed on the negative pressure tube 1, the operation is simple and fast; Then put the negative pressure optical fiber fixed suction tube into the ureteroscope operation channel, and then enter the water through the gap between the operation channel and the negative pressure optical fiber fixed suction tube, and then send a signal to the negative pressure pump 1b and the camera 5b through the controller, and the camera 5b After receiving the signal, it starts. The operator observes the position and state of the stone according to the picture returned by the camera 5b, and then the controller sends a signal to the laser fiber 2. After the laser fiber 2 receives the signal, the stone crushing step is performed, and the negative pressure pump 1b receives the signal. Then, negative pressure is generated at the negative pressure suction port 1a to suck the stone around the fiber to form a water circulation, preventing the water flow from rushing the stone to the renal pelvis; after the lithotripsy operation is completed, the fiber holder 3 needs to be removed, so the operator needs to reverse Rotate the fixed end 3a, unscrew the fixed end 3a, and then the elastic member 4e drives the connecting rod 4d through the elastic force, and the connecting rod 4d drives the mounting frame 4a to reset; the present application adopts the integrated negative pressure tube 1 and negative pressure suction port 1a Improved structural stability.

Further, the fixed end 3a provided by the application still has the defect that the optical fiber is not easy to enter the ureteral operation channel, in order to solve this problem, as shown in Figure 2:

The optical fiber holder 3 further includes a bell socket 3c, and the thin end of the horn socket 3c is fixedly connected with the end of the fixed end 3a.

Based on the above embodiments, the technical problem to be solved by the present application is how to make the optical fiber easier to enter the ureteral operation channel. For this reason, the present application realizes the function of ensuring that the negative pressure optical fiber fixed suction tube smoothly enters the ureteral operation channel and reaches the calculus through the bell sleeve port 3c. Since the ureteral channel is usually curved and undulating, in order to prevent the negative pressure optical fiber fixed suction tube from being stuck when moving in the ureteral channel, the negative pressure optical fiber fixed suction tube is guided through the flaring of the horn sleeve 3c, so that the laser fiber 2 can enter more easily Ureteric channel.

Further, the collet 3b3 provided by the present application still has the defect that the operator may over-tighten the fixed end 3a, causing the collet 3b3 to pinch the laser fiber 2. In order to solve this problem, see Figures 2, 3 and 3. As shown in Figure 10:

The chuck 3b3 is a ball made of flexible material.

Based on the above embodiments, the technical problem to be solved by the present application is how to prevent the laser fiber 2 from being pinched by the chuck 3b3. For this reason, the present application realizes the function of preventing the laser fiber 2 from being pinched by the collet 3b3 made of flexible material. The operator inserts the laser fiber 2 into the main pipe of the negative pressure pipe 1, then installs the connecting end 3b on the negative pressure pipe 1, and then rotates the fixed end 3a to the connecting end 3b, through the first threaded section 3a3 and the second threaded section 3b4 screw the fixed end 3a to the connecting end 3b, as the fixed end 3a approaches the connecting end 3b, the first support frame 3a1 also approaches the second support frame 3b1, when the sleeve 3a2 contacts the collet 3b3, As the sleeve 3a2 continues to move, the collet 3b3 is squeezed, and as the collet 3b3 is squeezed, the elastic rod 3b2 is pulled, and the elastic rod 3b2 is deformed after being stressed, thereby driving the collets 3b3 to approach each other, thereby squeezing the laser fiber 2 , the chuck 3b3 is deformed by the reaction force to prevent the laser fiber 2 from being pinched, and the laser fiber 2 is fixed at the same time, and then the negative pressure fiber fixed suction tube is placed into the ureteroscope operation channel, and then fixed through the operation channel and the negative pressure fiber Water enters the gap between the suction tubes, and then sends a signal to the negative pressure tube 1 and the laser fiber 2 through the controller. After the laser fiber 2 receives the signal, the stone crushing step is performed. The stone is sucked around the fiber, forming a water circulation, preventing the water flow from rushing the stone to the renal pelvis.

The above examples only represent one or several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A negative pressure optical fiber fixing suction tube connected with a ureteroscope comprises a negative pressure tube (1) and a laser optical fiber (2), wherein the laser optical fiber (2) is fixedly arranged in the negative pressure tube (1), and the axis of the laser optical fiber (2) is collinear with the axis of the negative pressure tube (1);

the optical fiber fixing device is characterized by further comprising an optical fiber fixing device (3), wherein the optical fiber fixing device (3) comprises a fixed end (3a) and a connecting end (3b), the fixed end (3a) and the connecting end (3b) are straight round tubes, the fixed end (3a) comprises a first support frame (3a1), a sleeve (3a2) and a first thread section (3a3), the first support frame (3a1) is fixedly installed inside the fixed end (3a), the sleeve (3a2) is fixedly installed on the first support frame (3a1), the sleeve (3a2) is horn-shaped, and the first thread section (3a3) is fixedly arranged on the inner wall of the fixed end (3 a); the connecting end (3b) comprises a second supporting frame (3b1), an elastic rod (3b2), a chuck (3b3) and a second thread section (3b4), the second supporting frame (3b1) is fixedly installed inside the connecting end (3b), the elastic rod (3b2) is provided with a plurality of elastic rods (3b2) symmetrically arranged along the axis center of the connecting end (3b), two ends of the elastic rod (3b2) are respectively fixedly connected with the second supporting frame (3b1) and the chuck (3b3), the second thread section (3b4) is fixedly arranged outside the connecting end (3b), and the first thread section (3a3) is in threaded connection with the second thread section (3b 4).

2. The negative-pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 1, further comprising a joint fixing assembly (4), wherein the joint fixing assembly (4) comprises a mounting frame (4a), a flexible conical block (4b) and a limiting block (4c), the mounting frame (4a) is slidably mounted on the connecting end (3b), the thin end of the flexible conical block (4b) is fixedly connected with one end, far away from the second thread section (3b4), of the connecting end (3b), the thick end of the flexible conical block (4b) is fixedly connected with the limiting block (4c), and the outer diameter of the limiting block (4c) is larger than that of the thick end of the flexible conical block (4 b).

3. The negative-pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 2, wherein the joint fixing assembly (4) further comprises a plurality of connecting rods (4d) and elastic pieces (4e), the connecting rods (4d) are arranged symmetrically along the axis center of the mounting rack (4a), the connecting rods (4d) are fixedly connected with the mounting rack (4a), the elastic pieces (4e) are arranged in a plurality and correspond to the connecting rods (4d) one by one, and two ends of each elastic piece (4e) are respectively and fixedly connected with the connecting rods (4d) and the connecting ends (3 b).

4. The negative pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 1, wherein the negative pressure tube (1) comprises a negative pressure suction port (1a) and a negative pressure pump (1b), the negative pressure suction port (1a) is fixedly arranged on a main tube of the negative pressure tube (1) and is communicated with the negative pressure tube (1), and the negative pressure pump (1b) is fixedly arranged on the negative pressure suction port (1 a).

5. The negative-pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 1, further comprising a camera assembly (5), wherein the camera assembly (5) comprises a mounting ring (5a) and a camera (5b), the mounting ring (5a) is fixedly sleeved on the negative-pressure tube (1), and the camera (5b) is fixedly mounted on the mounting ring (5 a).

6. The negative-pressure optical fiber fixing suction tube for connecting the ureteroscope according to claim 1, wherein the fixed end (3a) further comprises an anti-slip line (3a4), and the anti-slip line (3a4) is fixedly arranged on the outer surface of the fixed end (3 a).

7. The negative-pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 3, wherein the connector fixing assembly (4) further comprises a rotary sealing ring (4f), the rotary sealing ring (4f) is fixedly installed on the installation frame (4a), and when the fixed end (3a) is in contact with the installation frame (4a), the rotary sealing ring (4f) is located between the installation frame (4a) and the fixed end (3 a).

8. The negative pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 4, wherein the negative pressure suction port (1a) and the negative pressure tube (1) are integrally formed stainless steel thin-wall straight circular tubes.

9. The negative-pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 1, wherein the optical fiber fixer (3) further comprises a horn socket (3c), and the thin end of the horn socket (3c) is fixedly connected with the end of the fixed end (3 a).

10. The negative-pressure optical fiber fixing suction tube connected with the ureteroscope according to claim 1, wherein the clamping head (3b3) is a round ball made of flexible material.

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