CN113262016B - A stone fragmentation ablation device for urology - Google Patents

Abstract

The invention discloses a calculus smashing and melting device for urology department, which belongs to the technical field of urology department and comprises an injection tube and an outer cylinder fixedly connected with one end of the injection tube, wherein the injection tube is divided into a left cavity and a right cavity by a partition plate inside the injection tube, a piston is connected inside the right cavity in a sliding mode, a liquid inlet hole is formed in the side wall of the right cavity, an impeller box is fixed in the middle position of the left side of the partition plate, an extrusion tube and a liquid guide tube are respectively connected to two sides of the impeller box, and an ultrasonic generator is installed on the outer side of the liquid guide tube. In the process of injecting the calculus dissolving liquid, the screw thread grinding rod is used for grinding larger calculus and sucking the calculus into the inner barrel II by utilizing negative pressure generated by sliding of the piston ring, the ground calculus is conveyed and stored in the storage cavity by the screw thread grinding rod, and the inside of the calculus dissolving liquid inner barrel II injected into the urethra is convenient to collect under the action of the negative pressure.

Description

A stone fragmentation ablation device for urology

technical field

The invention relates to the technical field of urology, in particular to a stone fragmentation and ablation device for urology.

Background technique

Urology is a medicine specializing in the study of male and female urinary tract and male reproductive system. It is mainly derived from surgery. With the advancement of medical technology and medical equipment manufacturing technology, the instruments in modern urological surgery are also becoming more and more. It can better help doctors to complete the operation, so that the patient can recover as soon as possible and get rid of the pain as soon as possible.

Existing stone grabbers used in urology generally adopt an open structure when grabbing stones, and the grab is made of multiple steel wires. After the mouth is inserted, the grasping end is easy to cause damage to the urethra, which is easy to cause urinary tract infection, and it is difficult to remove larger stones. The broken stone is broken, and the principle of free fall is adopted when collecting the broken stone, and the broken stone cannot be collected quickly, which is easy to cause the broken stone to be adsorbed in the urethra, which is inconvenient to use.

SUMMARY OF THE INVENTION

1. Technical problems to be solved

The technical problem to be solved by the present invention is to provide a stone fragmentation and ablation device for urology. During the process of injecting the stone ablation liquid, the larger stones are crushed by a threaded grinding rod and produced by sliding a piston ring. The negative pressure sucks the stones into the inner cylinder 2, and at the same time, the crushed stones are sucked into the inner cylinder 1 by the negative pressure, and the crushed stones are stored in the storage cavity during the rotation and transportation of the threaded grinding rod. Under the action of negative pressure, it is convenient to collect the calculus ablation liquid injected into the urethra inside the inner cylinder two, and it is convenient to use.

2. Technical solutions

In order to solve the above problems, the present invention adopts the following technical solutions:

A stone fragmentation and ablation device for urology, comprising a syringe barrel and an outer barrel fixedly connected at one end of the syringe barrel, wherein the inside of the syringe barrel is divided into left and right chambers by a partition plate, wherein the right and left chambers are divided into two chambers. The inside of the side chamber is slidably connected with a piston, and the other side of the piston is fixed with a piston rod extending to the outside of the syringe. An impeller box is fixed at the middle position of the side, and an impeller is rotatably connected to the inside of the impeller box. The two sides of the impeller box are respectively connected with an extrusion pipe and a liquid conduit, and the other end of the extrusion pipe is connected to the inner part of the syringe barrel. The chamber on the right side is connected to each other, an ultrasonic generator is installed on the outside of the catheter, a fixed box is fixed on the left side of the impeller box, and a second gear plate is rotatably connected to the middle position inside the fixed box. The rotating shaft at the center position of the second disk is connected with the impeller, and the fixed boxes on both sides of the second gear disk are rotatably connected with a gear disk 1 that meshes with the second gear disk;

The inner cylinder 1 and the inner cylinder 2 are laterally fixed from the inside to the outside at the inner center position of the outer cylinder, and a liquid passage cavity is opened between the inner cylinder 2 and the outer cylinder, and the right ends of the inner cylinder 2 and the inner cylinder 1 are It is fixed with the left side of the fixing box, the annular cavity between the inner cylinder 2 and the inner cylinder 1 is slidably connected with a piston ring, and the piston rings on both sides of the inner cylinder 1 are fixedly connected with threaded telescopic rods, so The other end of the threaded telescopic rod is interconnected with the gear plate 1, the inner cylinder 1 is laterally provided with a square insertion rod, and the right end of the square insertion rod is interconnected with the gear plate 2, and the inner side of the outer side of the square insertion rod is connected to each other. A piston block is slidably connected inside the first cylinder, and the other side of the piston block is connected with a threaded grinding rod through threads. A connecting hole is communicated, and a storage cavity is opened at the middle position of the inner cylinder 1, the left end of the inner cylinder 1 is fixedly connected with a sealing ear, and the inner cylinder 1 at the position of the sealing ear is provided with a suction port. The left end of the liquid chamber is provided with liquid outlet channels at equal intervals, two micro cameras are symmetrically installed on the left ends of the two inner cylinders, sliding chambers are opened on both sides of the inner two left ends of the inner cylinder, and the interior of the sliding chambers are slidably connected with A push seat, the other end of the push seat is fixed with a clamping seat.

Preferably, the threaded telescopic rod is assembled from a sleeve rod with an external thread and a sleeve with an internal thread, and the external thread of the sleeve rod and the internal thread of the sleeve cooperate with each other, and the bottom of the sleeve rod passes through the return spring Connected to the inner bottom end of the sleeve.

Preferably, the bottom end of the push seat is connected with the inner bottom end of the sliding cavity through a spring, and a through hole communicating with each other is opened between the sliding cavity and the liquid outlet channel.

Preferably, both ends of the thread grinding rod and the piston block are provided with a square chute for sliding the square insertion rod.

Preferably, the length of the inner cylinder 1 is smaller than the lengths of the inner cylinder 2 and the outer cylinder, and the sealing ear fixed at one end of the inner cylinder is fixed to the inner side wall of the inner cylinder 2.

3. Beneficial effects

(1) In the present invention, the calculus ablation liquid inside the syringe is squeezed into the impeller box through the extrusion tube by squeezing the piston rod and using the piston to drive the impeller to rotate, and then the calculus ablation liquid enters the liquid passage through the catheter. In the process of entering the inside of the liquid-passing cavity, the ultrasonic generator causes the liquid to oscillate with a high frequency and a small amplitude, and the stones are sprayed out through the liquid outlet channel opened at the other end of the liquid-passing cavity to wash the stones, which can easily remove the adhesion. Stones on the inner wall of the urethra, and in the process, the rotation of the impeller is used to drive the second gear plate to rotate, and the second gear plate and the first gear plate are meshed with each other, and the first gear plate is driven to rotate synchronously, and then the second gear plate rotates. During the second rotation, the square insertion rod is driven to rotate, and the square insertion rod is inserted into the threaded grinding rod and the piston block, and the threaded grinding rod and the piston block are driven to rotate synchronously. The threaded telescopic rod rotates, and the threaded telescopic rod is assembled from a sleeve rod with an external thread and a sleeve with an internal thread, and the external thread of the sleeve rod and the internal thread of the sleeve cooperate with each other, so that the sleeve inside the threaded telescopic rod is assembled. The cylinder rotates, and the other end of the sleeve rod is fixed with the piston ring, so that when the threaded telescopic rod sleeve rotates, the sleeve rod inside the threaded telescopic rod shrinks along the threaded groove, so that the piston ring is moved along the inner cylinder and the inner cylinder. The chamber between the two cylinders slides, and the hydraulic oil inside the chamber is squeezed into the inner cylinder one through the connecting hole and pushes the piston block and the threaded grinding rod to extend, which is convenient for the threaded grinding rod to expand and contract, and it is convenient for comparison. Grinding and crushing large stones is easy to use.

(2) In the process of sliding the piston ring in the present invention, since the outer cylinder is inside the urethra, the piston ring generates suction on the left side of the piston ring during the process of sliding to the right, and the position of the suction port is opposite to the outside of the sealing ear. Negative pressure is generated inside the second inner cylinder, and under the action of the negative pressure, the stone is sucked into the inside of the second inner cylinder, and at the same time, when the stone ablation fluid passes through the liquid outlet channel, it enters the sliding cavity through the gap between the liquid outlet channel and the sliding cavity. and pushes the push seat to slide along the inside of the sliding cavity, so that the clamping seat clamps the larger stones that enter the second inner cylinder. The stones are ground and crushed, and the crushed stones are sucked into the inner cylinder 1 by the action of negative pressure, and the crushed stones are transported to the position of the inner storage cavity of the inner cylinder 1 under the conveying state of the rotation of the threaded grinding rod. It is stored for a short time, and under the action of negative pressure, the calculus ablation liquid injected into the urethra is sucked into the inner cylinder 2, which is convenient for crushing the calculi and collects the calculus ablation liquid injected into the urethra, which is convenient to use.

To sum up, in the process of injecting the calculus ablation liquid, the present invention crushes the larger calculus through the threaded grinding rod, and sucks the calculus into the inner cylinder 2 by the negative pressure generated by the sliding of the piston ring, and simultaneously uses the negative pressure to crush the calculus. The calculi are sucked into the inner cylinder 1, and the crushed calculi are stored in the storage cavity during the rotating and conveying process of the threaded grinding rod, and under the action of negative pressure, the calculus ablation solution injected into the urethra can be easily injected into the inner cylinder 2. The collection is carried out inside, which is convenient to use.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the enlarged structural schematic diagram at B in Fig. 1;

Fig. 3 is a schematic diagram of enlarged structure at A place in Fig. 1;

4 is a schematic diagram of the connection structure of the threaded telescopic rod and the square interpenetrating rod of the present invention;

FIG. 5 is a schematic diagram of a structure of an inner cylinder of the present invention.

Reference signs: 1, inner cylinder one; 2, threaded telescopic rod; 3, extrusion tube; 4, liquid inlet; 5, syringe; 6, piston; 7, piston rod; 8, catheter; 9, Ultrasonic generator; 10. Liquid passage chamber; 11. Outer cylinder; 12. Thread grinding rod; 13. Piston ring; 14. Inner cylinder two; 15. Square insertion rod; 16. Return spring; 17. Connecting hole; 18. Gear plate one; 19. Impeller; 20. Gear plate two; 21. Impeller box; 22. Fixed box; 23. Piston block; 24. Micro camera; 25. Liquid outlet channel; ; 28, sliding cavity; 29, sealing ear; 30, suction port; 31, storage cavity.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

As shown in Figures 1-5, a stone fragmentation and ablation device for urology includes a syringe 5 and an outer tube 11 fixedly connected at one end of the syringe 5, wherein the inside of the syringe 5 is separated by a partition The syringe 5 is divided into two chambers, left and right, wherein a piston 6 is slidably connected to the inside of the chamber on the right, and a piston rod 7 extending to the outside of the syringe 5 is fixed on the other side of the piston 6. A liquid inlet hole 4 is opened on the side wall of the chamber, an impeller box 21 is fixed at the middle position on the left side of the partition plate, and an impeller 19 is rotatably connected to the inside of the impeller box 21. The two sides of the impeller box 21 are respectively The extrusion pipe 3 and the catheter 8 are connected, and the other end of the extrusion pipe 3 is communicated with the right side chamber inside the syringe 5. The outer side of the catheter 8 is provided with an ultrasonic generator 9. A fixed box 22 is fixed on the left side of the impeller box 21 , and a second gear plate 20 is rotatably connected to the middle position inside the fixed box 22 . The rotating shaft at the center position of the second gear plate 20 is connected with the impeller 19 . The fixed box 22 on both sides of the second 20 is rotatably connected with a gear plate 1 18 that meshes with the second gear plate 20;

The inner cylinder 1 and the inner cylinder 2 14 are laterally fixed at the inner center position of the outer cylinder 11 from the inside to the outside, and a liquid passage 10 is opened between the inner cylinder 2 14 and the outer cylinder 11. The inner cylinder 2 14 is fixed with the right end of the inner cylinder one 1 and the left side of the fixing box 22. The annular cavity between the inner cylinder two 14 and the inner cylinder one 1 is slidably connected with the piston ring 13, and both sides of the inner cylinder one 1 are slidably connected. The two sides of the piston ring 13 are fixedly connected with a threaded telescopic rod 2, the other end of the threaded telescopic rod 2 is connected with the gear plate 1 18, and a square insertion rod 15 is laterally arranged inside the inner cylinder 1, and the square insertion rod The right end of the rod 15 is interconnected with the gear plate 20, the inner cylinder 1 on the outside of the square insertion rod 15 is slidably connected with a piston block 23, and the other side of the piston block 23 is threadedly connected with a threaded grinding rod 12, The right end of the side surface of the inner cylinder 1 is equally spaced with connecting holes 17 that communicate with the annular cavity between the inner cylinder 1 and the inner cylinder 2 14, and a storage cavity 31 is opened at the middle position of the inner cylinder 1. The left end of the inner cylinder-1 is fixedly connected with a sealing ear 29, and the inner cylinder-1 at the position of the sealing ear 29 is provided with a suction port 30, and the left end of the liquid-passing chamber 10 is provided with liquid outlet channels 25 at equal intervals. , two miniature cameras 24 are symmetrically installed on the left end of the second inner cylinder 14, sliding cavities 28 are opened on both sides of the left end of the inner cylinder 2 14, and a push seat 27 is slidably connected to the inside of the sliding cavity 28. The other end of the push seat 27 is fixed with a clamping seat 26, the threaded telescopic rod 2 is assembled by a sleeve rod with an external thread and a sleeve with an internal thread, and the external thread of the sleeve rod and the internal thread of the sleeve are mutually Matching, the bottom of the sleeve rod is connected with the inner bottom end of the sleeve through the return spring 16, the bottom end of the push seat 27 is connected with the inner bottom end of the sliding cavity 28 through the spring, and the sliding cavity 28 is connected to the liquid outlet There are through holes communicating with each other between the channels 25, the ends of the thread grinding rod 12 and the piston block 23 are both provided with a square chute for the square insertion rod 15 to slide, and the length of the inner cylinder 1 is smaller than that of the inner cylinder. The length of the second cylinder 14 and the outer cylinder 11 , and the sealing ears 29 fixed at the end of the inner cylinder 1 1 are fixed to the inner side wall of the inner cylinder 2 14 .

The specific working principle of the above-mentioned stone fragmentation and ablation device for urology is as follows:

First, the calculus ablation solution is injected into the chamber on the right side of the syringe 5 from the position of the liquid inlet 4, then the liquid inlet 4 is closed, and then the outer cylinder 11 is inserted into the urethra, and the micro camera 24 penetrates the calculus inside the urethra. In other cases, when a stone is encountered, the stone ablation liquid inside the syringe 5 is squeezed into the impeller box 21 by squeezing the piston rod 7 and the piston 6 is used to squeeze the inside of the impeller box 21 through the extrusion tube 3 and drive the impeller 19 to rotate, and then the stone is ablated. The liquid enters the inside of the liquid-passing cavity 10 through the catheter 8 . During the process of entering the liquid-passing cavity 10 , the ultrasonic generator 9 causes the liquid to vibrate with a high frequency and a small amplitude, and passes through the outlet opened at the other end of the liquid-passing cavity 10 . The liquid channel 25 is sprayed out to wash the stones, which can easily remove the stones adhering to the inner wall of the urethra. At the same time, during this process, the second gear plate 20 is driven by the rotation of the impeller 19 to rotate, and the second gear plate 20 and the gear plate are driven by the rotation of the impeller 19. One 18 meshes with each other, synchronously drives the gear plate one 18 to rotate, and then drives the square insertion rod 15 to rotate during the rotation of the second gear plate 20, and hears that the square insertion rod 15 is inserted into the thread grinding rod 12 and the piston block. Inside 23, the threaded grinding rod 12 and the piston block 23 are synchronously driven to rotate, and at the same time, the threaded telescopic rod 2 is driven to rotate during the rotation of the gear plate 1 18, and the threaded telescopic rod 2 is composed of a sleeve rod with an external thread and an inner rod. The threaded sleeve is assembled, and the outer thread of the sleeve rod and the inner thread of the sleeve cooperate with each other, so that the sleeve inside the threaded telescopic rod 2 rotates, and the other end of the sleeve rod is fixed with the piston ring 13, so that in the When the sleeve of the threaded telescopic rod 2 rotates, the sleeve rod inside the threaded telescopic rod 2 shrinks along the threaded groove, so that the piston ring 13 slides along the chamber between the inner cylinder 1 and the inner cylinder 2 14, and the inside of the chamber is slid. The hydraulic oil is squeezed into the interior of the inner cylinder 1 through the connecting hole 17 and pushes the piston block 23 and the threaded grinding rod 12 to extend. At the same time, during the sliding process of the piston ring 13, since the outer cylinder 11 is located inside the urethra, the piston is When the ring 13 slides to the right, the left side of the piston ring 13 generates suction, and the position of the suction port 30 generates a negative pressure inside the inner cylinder 2 14 outside the sealing ear 29, and under the action of the negative pressure, the stone is removed. Inhaling the inside of the inner cylinder II 14, while the stone ablation liquid passes through the liquid outlet channel 25, it enters the interior of the sliding chamber 28 through the gap between the liquid outlet channel 25 and the sliding chamber 28, and pushes the push seat 27 along the sliding chamber 28. The inside is slid, so that the clamping seat 26 clamps the larger stones entering the inner cylinder 2 14, and then the larger stones are ground and pulverized in the process of the thread grinding rod 12 rising and rotating. The effect of negative pressure sucks the crushed stones into the interior of the inner cylinder-1, and in the conveying state of the threaded grinding rod 12 rotating, the crushed stones are transported to the position of the storage cavity 31 in the inner cylinder-1 for a short period of time. It is stored, and under the action of negative pressure, the calculus ablation liquid injected into the urethra is sucked into the inner cylinder II 14, which is convenient for crushing the calculi and eliminates the calculus injected into the urethra. The melt is collected, which is convenient to use.

It can be seen from the above content that the present invention, in the process of injecting the calculus ablation liquid, pulverizes the larger calculus through the threaded grinding rod 12 and uses the negative pressure generated by the sliding of the piston ring 13 to suck the calculus into the inner cylinder 2 14, and simultaneously. The pulverized stones are sucked into the inner cylinder-1 by negative pressure, and the pulverized stones are stored in the storage cavity 31 during the rotating and conveying process of the threaded grinding rod 12, and under the action of negative pressure, it is convenient to inject into the urethra. The internal calculus ablation solution is collected inside the inner cylinder II 14, which is convenient to use.

Those skilled in the art should realize that the above embodiments are only used to illustrate the present invention, but not to limit the present invention. Changes and modifications will fall within the scope of the claims of the present invention.

Claims (4)

1. A stone fragmentation and ablation device for urology, characterized in that it comprises a syringe (5) and an outer barrel (11) fixedly connected at one end of the syringe (5), wherein the syringe (5) The interior of the syringe (5) is divided into two chambers, left and right, by a partition plate, wherein a piston (6) is slidably connected to the interior of the chamber on the right side, and the other side of the piston (6) is fixed with an extension to the injection chamber. The piston rod (7) on the outer side of the cylinder (5), the side wall of the chamber on the right side is provided with a liquid inlet hole (4), an impeller box (21) is fixed at the middle position on the left side of the partition plate, and An impeller (19) is rotatably connected to the inside of the impeller box (21), and an extrusion pipe (3) and a liquid conduit (8) are respectively connected to both sides of the impeller box (21). The other end is communicated with the right chamber inside the syringe (5), an ultrasonic generator (9) is installed on the outer side of the catheter (8), and a fixing box is fixed on the left side of the impeller box (21). (22), and a gear plate two (20) is rotatably connected at the middle position inside the fixed box (22), the rotating shaft at the center position of the gear plate two (20) is connected with the impeller (19), and the gear plate is connected to the impeller (19). The fixed box (22) on both sides of the second (20) is rotatably connected with a gear disc one (18) which meshes with the gear disc two (20); An inner cylinder one (1) and an inner cylinder two (14) are laterally fixed from the inside to the outside at the inner center position of the outer cylinder (11), and a second inner cylinder (14) and the outer cylinder (11) are provided with The liquid passage chamber (10), the right ends of the inner cylinder two (14) and the inner cylinder one (1) are fixed with the left side of the fixing box (22), the inner cylinder two (14) and the inner cylinder one (1) A piston ring (13) is slidably connected inside the annular cavity between ), and a threaded telescopic rod (2) is fixedly connected to both sides of the piston ring (13) on both sides of the inner cylinder (1). 2) The other end is connected with the gear plate one (18), the inner cylinder one (1) is laterally provided with a square insertion rod (15), and the right end of the square insertion rod (15) is connected with the gear plate two (20). ), the inner cylinder one (1) on the outside of the square insertion rod (15) is slidably connected with a piston block (23), and the other side of the piston block (23) is threadedly connected with a threaded grinding rod (12). ), the right end of the side of the inner cylinder one (1) is provided with a connecting hole (17) that communicates with the annular cavity between the inner cylinder one (1) and the inner cylinder two (14) at equal intervals, and the inner cylinder one (1) ( 1) A storage cavity (31) is opened at the middle position, the left end of the inner cylinder one (1) is fixedly connected with a sealing ear (29), and the inner cylinder one (1) at the position of the sealing ear (29) is opened on the inner cylinder one (1). There is a suction port (30), the left end of the liquid passage chamber (10) is provided with liquid outlet channels (25) at equal intervals, and two micro cameras (24) are symmetrically installed on the left end of the inner cylinder two (14), so A sliding cavity (28) is provided on both sides of the left end of the second inner cylinder (14), and a push seat (27) is slidably connected to the inside of the sliding cavity (28), and the other end of the push seat (27) is fixed with a sliding cavity (28). Clamping seat (26); The bottom end of the push seat (27) is connected with the inner bottom end of the sliding cavity (28) through a spring, and a through hole communicating with each other is opened between the sliding cavity (28) and the liquid outlet channel (25). 2 . The stone fragmentation and ablation device for urology according to claim 1 , wherein the threaded telescopic rod ( 2 ) is assembled by a sleeve rod with an external thread and a sleeve with an internal thread. 3 . The outer thread of the sleeve rod and the inner thread of the sleeve cooperate with each other, and the bottom of the sleeve rod is connected with the inner bottom end of the sleeve through a return spring (16). 3 . The stone fragmentation and ablation device for urology according to claim 1 , wherein the ends of the threaded grinding rod ( 12 ) and the piston block ( 23 ) are provided with a square insertion rod. 4 . (15) Square chute for sliding. The stone fragmentation and ablation device for urology according to claim 1, characterized in that the length of the first inner cylinder (1) is less than the length of the second inner cylinder (14) and the outer cylinder (11). length, and the sealing ear (29) fixed at the end of the inner cylinder one (1) is fixed with the inner side wall of the inner cylinder two (14).

Images