Urinary system calculus removing device and urinary system calculus removing method
The urinary system stone removal device, which integrates a high-definition lens, laser guide wire, and negative pressure suction system, achieves simultaneous stone fragmentation and grinding, solving the problems of complex operation and difficulty in removing debris in existing technologies. This improves surgical efficiency and visibility, and reduces the risk of residual stones.
Patent Information
- Application Number
- CN202511314487.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2025-11-14
AI Technical Summary
Existing urinary system stone removal devices lack an integrated structure, resulting in complex operation, low efficiency, and difficulty in removing fragments after stone fragmentation, especially in the deep renal calyx or ureteral bends, which affects long-term efficacy and recurrence rate.
A device for removing urinary system stones was designed, integrating a high-definition lens, laser guide wire, crushing component, and negative pressure suction system to achieve simultaneous stone crushing, grinding, and collection. After initial laser crushing, the stones are further ground using a drill bit and a conical liner, and a filter component is used to collect the stones.
It improves surgical efficiency, reduces surgical time and the risk of mucosal damage, reduces debris residue, improves visibility and lithotripsy efficiency, simplifies the operation process, and reduces the thermal effects caused by laser use.
Smart Images
Figure CN120938593A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of minimally invasive medical device technology in urology, specifically relating to a device for removing urinary system stones and a method for removing urinary system stones. Background Technology
[0002] In recent years, the incidence of urinary tract stones has been on the rise, especially among middle-aged and elderly people and patients with metabolic syndrome, making it one of the most common diseases in urology. Epidemiological studies show that the recurrence rate of kidney stones is as high as 30% to 50% within 5 years, severely impacting patients' quality of life and kidney function. Urinary tract stones are complex in type, mainly including calcium oxalate, calcium phosphate, uric acid stones, and cystine stones. Their formation mechanisms involve multiple factors such as urine supersaturation, crystal adhesion, urinary tract obstruction, infection, and Randall plaque formation.
[0003] Currently, in the clinical treatment of urinary tract stones, lithotripsy requires repeated withdrawal of the laser guidewire or changing of the channel to achieve suction or removal of the fragments. Frequent instrument changes increase the complexity of the operation and the risk of bleeding, leading to interruptions in the surgical procedure and low efficiency. After lithotripsy, the fragments are widely distributed and difficult to remove, especially in the deep renal calyces or ureteral bends, where residual stones are prone to remain, affecting long-term efficacy and recurrence rate. Moreover, existing devices cannot complete the entire process from pre-fracture, compression, grinding to removal in a single endoscopic insertion, resulting in a fragmented lithotripsy-suction system and limited efficiency. Summary of the Invention
[0004] This invention addresses the problems of the aforementioned stone removal devices lacking an integrated structure and having low efficiency by providing a urinary system stone removal device and a method for removing urinary system stones.
[0005] To achieve the above objectives, the present invention employs the following technical solution: A urinary system stone removal device includes a housing. A guide tube is fixedly connected to the front end of the housing. The guide tube has a lens through-hole, a water inlet, a laser guide wire through-hole, a pulverizing component through-hole, and a telescopic rod through-hole. A lens handle is provided on the side wall of the housing, and the lens handle is connected to a lens tube. The lens tube passes through the housing and connects to the lens through-hole. A high-definition lens is installed inside the lens tube and extends through the lens handle and the lens through-hole to the head of the guide tube. The high-definition lens is connected to an external display screen. A pulverizing component is installed inside the pulverizing component through-hole. The front end of the guide tube... The housing is equipped with a telescopic auxiliary component. A laser guide wire handle is provided at the end of the housing. The laser guide wire handle is connected to a laser guide wire tube. The laser guide wire tube passes through the housing and connects to a laser guide wire through hole. A laser guide wire is provided inside the laser guide wire tube and passes through the laser guide wire handle through the laser guide wire through hole to the head of the guide hose. A laser control switch is provided on the side wall of the housing. The end of the housing is connected to the water inlet of the filter component through a pipe. The air inlet of the filter component is connected to a negative pressure suction machine through a negative pressure connecting pipe. A water inlet pipe is provided on the side wall of the housing and passes through the housing and connects to the water inlet hole.
[0006] Furthermore, the crushing component includes a drill bit, a motor is fixedly installed at the input end of the drill bit, the motor frame is fixedly installed on the inner wall of the through hole of the crushing component, the motor is connected to an external power source through a wire, and a conical inner liner is fixedly installed between the port of the through hole of the crushing component and the drill bit, the conical inner liner cooperating with the drill bit.
[0007] Furthermore, the telescopic auxiliary component includes a pressure plate, which is disposed at the upper end of the through hole of the crushing component. One end face of the pressure plate is fixedly connected to one end of the telescopic rod, and the other end of the telescopic rod is fixedly connected to a slider. A button is fixedly connected to the end face of the slider near the side wall. A groove is provided on the side wall of the outer shell at a position corresponding to the slider, and the button passes through the groove to connect to the slider.
[0008] Furthermore, the filter component includes a bottle body, with a drain pipe and a negative pressure connection pipe at the upper end of the bottle body, a water outlet pipe on the lower side wall of the bottle body, and a filter screen at the connection between the water outlet pipe and the bottle body.
[0009] Furthermore, the motor is configured as an ultrasonic motor.
[0010] Furthermore, a gap is provided between the drill bit and the inner wall of the through hole of the crushing component, and the cross-sectional area of the gap is much larger than the volume of the crushed stone.
[0011] Furthermore, a valve is installed on the water inlet pipe to control the water flow.
[0012] Furthermore, the outer surface of the drill bit and the outer surface of the conical inner liner are provided with multiple toothed abrasive protrusions, and the distance between the toothed abrasive protrusions and the inner wall of the guide hose gradually decreases from top to bottom.
[0013] Furthermore, the ends of the lens through-hole, laser guide wire through-hole, pulverizing component through-hole, and telescopic rod through-hole are all equipped with seals.
[0014] A device for removing urinary system stones and a method for removing urinary system stones. Step 1: Establish a surgical channel. Insert the guiding tube into the kidney through the established surgical channel. Open the high-definition lens and insert it into the head of the guiding tube through the lens handle. Open the valve to allow water to flow in through the guiding tube, creating a certain operating space inside the renal pelvis and exposing the stone within the operating space. Determine the location and outline of the stone through the high-definition lens. Open the laser guidewire and insert it into the renal pelvis through the laser guidewire handle and guidewire tube, placing the laser guidewire at the appropriate location. Step 2: Under the guidance of a high-definition lens, determine the area to be broken up. Align the laser guide wire with the appropriate area of the stone, manually control the laser control switch, and perform the first crushing of the stone to initially break up large pieces of stone. Step 3: Keep the valve open to allow water to flow in at a constant speed through the guide hose, and at the same time turn on the negative pressure suction machine and the motor; Step 4: Manually control the button to move and collect the stones after the first crushing by pressing the plate. Adjust the position of the crushed stones so that they enter the crushing component. At this time, due to the negative pressure suction and the rotation of the drill bit, the stones enter the grinding device of the drill bit. The drill bit and the conical inner liner grind the stones a second time, grinding large stones into smaller stones. The stones after being ground by the crushing component are smaller. Using water as a medium, the ground stones are sucked into the filter component through the channel of the crushing component by the negative pressure suction machine. Step 5: The ground stones enter the bottle, where the filter separates the water from the stones. The stones are then collected and processed uniformly.
[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention has lens through holes, water inlet holes, laser guide wire through holes, crushing component through holes and telescopic rod through holes respectively set inside the shell, which ensures the independent operation of each function and realizes the simultaneous performance of lithotripsy, grinding and collection. There is no need to remove the laser guide wire or change instruments during the operation, which greatly improves the efficiency of the operation.
[0016] 2. The present invention uses an independent laser guide wire channel, which allows other lithotripsy and suction operations to be completed while the laser guide wire is in place, saving surgical time and reducing the risk of mucosal damage.
[0017] 3. The present invention first uses laser to crush the stone for the first time, and then uses a pressing plate to press the stone into the drill bit and conical liner for the second grinding. At the same time, a negative pressure suction machine is used to attract the stone, which reduces the residue of debris, improves visibility and stone crushing efficiency.
[0018] 4. This invention uses a filter component to collect stones, which facilitates further clinical diagnosis and specimen collection.
[0019] 5. The present invention has multiple toothed grinding protrusions on the outer surface of the drill bit and the conical inner liner to increase the friction between the drill bit and the stone, achieve efficient cutting, grind the stone, and grind large stones into fine pieces, thereby greatly improving the crushing efficiency.
[0020] 6. The toothed grinding protrusions of the present invention gradually reduce the distance between the inner walls of the guide hose from top to bottom. The combination of the crushing component and the laser, along with the negative pressure attraction and the physical structure of the drill bit, gradually grinds the stones into small fragments, achieving the effect of removing stones by being attracted out.
[0021] 7. This invention relates to the use of a pulverizing component, which reduces the use of lasers. Lasers generate a lot of heat during use, and during surgery, the temperature of the surgical working fluid in the renal pelvis is often too high, causing additional damage to the kidney tissue. At the same time, the increased temperature can also damage surgical instruments and reduce their lifespan. The instrument involved in this invention reduces the frequency of laser lithotripsy and alleviates a series of problems caused by the increased temperature of the working fluid during surgery. The grinding power system used in this invention can greatly alleviate the thermal effect of laser lithotripsy. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of circle A; Figure 4 For the present invention Figure 2 Enlarged view of circle B; Figure 5 For the present invention Figure 1 Enlarged view of circle C; In the diagram, 1 is the outer casing, 2 is the guide hose, 3 is the lens through hole, 4 is the water inlet, 5 is the laser guide wire through hole, 6 is the crushing component through hole, 7 is the telescopic rod through hole, 8 is the lens handle, 9 is the lens tube, 10 is the laser guide wire handle, 11 is the laser guide wire tube, 12 is the laser control switch, 13 is the filter component, 14 is the water inlet, 15 is the air inlet, 16 is the negative pressure suction machine, 17 is the water inlet pipe, 18 is the drill bit, 19 is the motor, 20 is the conical liner, 21 is the pressure plate, 22 is the telescopic rod, 23 is the slider, 24 is the button, 25 is the slide, 26 is the bottle body, 27 is the drain pipe, 28 is the negative pressure connection pipe, 29 is the water outlet pipe, 30 is the filter screen, 31 is the valve, and 32 is the toothed grinding protrusion. Detailed Implementation
[0023] To further illustrate the technical solution of the present invention, the present invention will be further described below through embodiments.
[0024] like Figures 1-5 As shown, a urinary system stone removal device includes a housing 1. A guide hose 2 is fixedly connected to the front end of the housing 1. The guide hose 2 has a lens through-hole 3, a water inlet 4, a laser guide wire through-hole 5, a pulverizing component through-hole 6, a telescopic rod through-hole 7, and a negative pressure suction through-hole. The negative pressure suction through-hole and the pulverizing component through-hole 6 share a common channel. A lens handle 8 is provided on the side wall of the housing 1, and the lens handle 8 is connected to a lens tube 9. The lens tube 9 passes through the housing 1 and connects to the lens through-hole 3. A high-definition lens is provided in the lens tube 9 and passes through the lens through-hole 3 via the lens handle 8 to the head of the guide hose 2. The high-definition lens is connected to an external display screen. A pulverizing component is provided in the pulverizing component through-hole 6. A telescopic auxiliary component is provided at the front end of the guide hose 2. A laser guide wire handle is provided at the end of the housing 1. 10. The laser guide wire handle 10 is connected to the laser guide wire tube 11. The laser guide wire tube 11 passes through the outer shell 1 and connects to the laser guide wire through hole 5. The laser guide wire is installed inside the laser guide wire tube 11 and passes through the laser guide wire handle 10 through the laser guide wire through hole 5 to the head of the guide hose 2. A laser control switch 12 is installed on the side wall of the outer shell 1. The end of the outer shell 1 is connected to the water inlet 14 of the filter component 13 through a pipe. The air inlet 15 of the filter component 13 is connected to the negative pressure suction machine 16 through the negative pressure connecting pipe 28. A water inlet pipe 17 is installed on the side wall of the outer shell 1. The water inlet pipe 17 passes through the outer shell 1 and connects to the water inlet hole 4. A valve 31 is installed on the water inlet pipe 17 to control the water flow. The ends of the lens through hole 3, the laser guide wire through hole 5, the pulverizing component through hole 6, and the telescopic rod 22 through hole 7 are all equipped with seals.
[0025] like Figure 3As shown, the crushing component includes a drill bit 18, and a motor 19 is fixedly installed at the input end of the drill bit 18. The motor 19 is an ultrasonic motor 19. The frame of the motor 19 is fixedly installed on the inner wall of the through hole 6 of the crushing component. The motor 19 is connected to an external power source through a wire. A conical inner liner 20 is fixedly installed between the port of the through hole 6 of the crushing component and the drill bit 18. The conical inner liner 20 cooperates with the drill bit 18. A gap is provided between the drill bit 18 and the inner wall of the through hole 6 of the crushing component. The cross-sectional area of the gap is much larger than the volume of the crushed stone. Multiple toothed grinding protrusions 32 are provided on the outer surface of the drill bit 18 and the outer surface of the conical inner liner 20. The distance between the toothed grinding protrusions 32 and the inner wall of the guide tube gradually decreases from top to bottom.
[0026] like Figure 3 As shown, the telescopic auxiliary component includes a pressure plate 21, which is disposed at the upper end of the through hole 6 of the crushing component. One end face of the pressure plate 21 is fixedly connected to one end of the telescopic rod 22, and the other end of the telescopic rod 22 is fixedly connected to a slider 23. A button 24 is fixedly connected to the end face of the slider 23 near the side wall. A groove 25 is provided on the side wall of the outer shell 1 at a position corresponding to the slider 23. The button 24 passes through the groove 25 and connects to the slider 23.
[0027] like Figure 4 As shown, the filter component 13 includes a bottle body 26. The upper end of the bottle body 26 is provided with a drain pipe 27 and a negative pressure connection pipe 28. The lower side wall of the bottle body 26 is provided with a water outlet pipe 29. A filter screen 30 is provided at the connection between the water outlet pipe 29 and the bottle body 26.
[0028] A device for removing urinary system stones and a method for removing urinary system stones. Step 1: Establish a surgical channel. Insert the guiding tube 2 into the kidney through the established surgical channel. Open the high-definition lens and insert it into the head of the guiding tube 2 through the lens handle 8. Open the valve 31 to allow water to flow through the guiding tube 2, creating a certain operating space inside the renal pelvis and exposing the stone within the operating space. Determine the location and outline of the stone through the high-definition lens. Open the laser guidewire and insert it into the renal pelvis through the laser guidewire handle 10 and laser guidewire tube 11, placing the laser guidewire at the appropriate location. Step 2: Under the guidance of a high-definition lens, determine the area to be broken up. Align the laser guide wire with the appropriate area of the stone and manually control the laser control switch 12 to perform the first crushing of the stone, initially breaking up large pieces of stone. Step 3: Keep valve 31 open to allow water to flow in at a constant speed through guide hose 2, and at the same time turn on negative pressure suction machine 16 and motor 19; Step 4: Manually control button 24 to move and collect the crushed stones through the pressure plate 21, adjust the position of the crushed stones so that they enter the crushing component. At this time, due to the negative pressure suction and the rotation of the drill bit 18, the stones enter the grinding device of the drill bit. The drill bit 18 and the conical liner 20 then grind the stones a second time, grinding large stones into smaller stones. The stones after being ground by the crushing component are smaller, and the ground stones are sucked into the filter component through the negative pressure suction machine via the crushing component channel 6 using water as a medium. Step 5: The ground stones enter the bottle 26, where the filter screen 30 separates the water from the stones. The stones are then collected and processed uniformly.
[0029] The foregoing has shown and described the main features and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.
[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A device for removing urinary system stones, characterized in that: Includes an outer shell (1), the front end of which is fixedly connected to a guide hose (2). The guide hose (2) is provided with a lens through hole (3), a water inlet hole (4), a laser guide wire through hole (5), a crushing component through hole (6), and a telescopic rod (22) through hole (7). A lens handle (8) is provided on the side wall of the outer shell (1), and the lens handle (8) is connected to a lens pipe (9). The lens pipe (9) passes through the outer shell (1) and connects to the lens through hole (3). A high-definition lens is provided in the lens pipe (9), and passes through the lens through hole (3) through the lens handle (8) to the head of the guide hose (2). The high-definition lens is connected to an external display screen. A crushing component is provided in the crushing component through hole (6). A telescopic auxiliary component is provided at the front end of the guide hose (2). The end of the housing (1) is provided with a laser guide wire handle (10), the laser guide wire handle (10) is connected to a laser guide wire tube (11), the laser guide wire tube (11) passes through the housing (1) and connects to the laser guide wire through hole (5), the laser guide wire tube (11) is provided with a laser guide wire, and passes through the laser guide wire handle (10) through the laser guide wire through hole (5) to the head of the guide hose (2), the side wall of the housing (1) is provided with a laser control switch (12), the end of the housing (1) is connected to the water inlet (14) of the filter component (13) through a pipe, the air inlet (15) of the filter component (13) is connected to the negative pressure suction machine (16) through the negative pressure connecting pipe (28), the side wall of the housing (1) is provided with a water inlet pipe (17), the water inlet pipe (17) passes through the housing (1) and connects to the water inlet hole (4).
2. The urinary system stone removal device according to claim 1, characterized in that: The crushing component includes a drill bit (18), and a motor (19) is fixedly installed at the input end of the drill bit (18). The motor (19) frame is fixedly installed on the inner wall of the through hole (6) of the crushing component. The motor (19) is connected to an external power source through a wire. A conical inner liner (20) is fixedly installed between the port of the through hole (6) of the crushing component and the drill bit (18). The conical inner liner (20) cooperates with the drill bit (18).
3. The urinary system stone removal device according to claim 1, characterized in that: The telescopic auxiliary component includes a pressure plate (21), which is located at the upper end of the through hole (6) of the crushing component. One end of the pressure plate (21) is fixedly connected to one end of the telescopic rod (22), and the other end of the telescopic rod (22) is fixedly connected to a slider (23). A button (24) is fixedly connected to the end face of the slider (23) near the side wall. A groove (25) is provided on the side wall of the outer shell (1) at the position corresponding to the slider (23). The button (24) passes through the groove (25) and connects to the slider (23).
4. The urinary system stone removal device according to claim 1, characterized in that: The filter component (13) includes a bottle body (26), the upper end of which is provided with a drain pipe (27) and a negative pressure connection pipe (28), the lower side wall of the bottle body (26) is provided with a water outlet pipe (29), and a filter screen (30) is provided at the connection between the water outlet pipe (29) and the bottle body (26).
5. A urinary system stone removal device according to claim 2, characterized in that: The motor (19) is configured as an ultrasonic motor (19).
6. The urinary system stone removal device according to claim 2, characterized in that: A gap is provided between the drill bit (18) and the inner wall of the through hole (6) of the crushing component, and the cross-sectional area of the gap is much larger than the volume of the crushed stone.
7. The urinary system stone removal device according to claim 1, characterized in that: A valve (31) is installed on the water inlet pipe (17) to control the water flow.
8. A urinary system stone removal device according to claim 2, characterized in that: Multiple toothed abrasive protrusions (32) are provided on the outer surface of the drill bit (18) and the outer surface of the conical inner liner (20). The distance between the toothed abrasive protrusions (32) and the inner wall of the guide tube (2) gradually decreases from top to bottom.
9. A urinary system stone removal device according to claim 1, characterized in that: The ends of the lens through hole (3), the laser guide wire through hole (5), the crushing component through hole (6), and the telescopic rod (22) through hole (7) are all equipped with seals.
10. A device for removing urinary system stones and a method for removing urinary system stones according to any one of claims 2-9, characterized in that: Step 1: Establish a surgical channel. Insert the guiding tube (2) into the kidney through the established surgical channel. Open the high-definition lens and insert it into the head of the guiding tube (2) through the lens handle (8). Open the valve (31) to allow water to flow through the guiding tube (2), creating a certain operating space inside the renal pelvis and exposing the stone within the operating space. Determine the location and outline of the stone through the high-definition lens. Open the laser guidewire and insert it into the renal pelvis through the laser guidewire handle (10) and laser guidewire tube (11). Place the laser guidewire in the appropriate position. Step 2: Under the guidance of the high-definition lens, determine the location to be broken up, align the laser guide wire with the appropriate location of the stone, manually control the laser control switch (12), and perform the first crushing of the stone to initially break up the large stones; Step 3: Keep the valve (31) open so that the water flows in at a constant speed through the guide hose (2), and at the same time turn on the negative pressure suction machine (16) and the motor (19). Step 4: Manually control the button (24) to move and collect the crushed stones through the pressure plate (21), adjust the position of the crushed stones so that they enter the crushing component. At this time, due to the negative pressure suction and the rotation of the drill bit (18), the stones enter the grinding device of the drill bit. At this time, the drill bit (18) and the conical inner liner (20) grind the stones a second time, grinding large stones into small stones. The stones after being ground by the crushing component are smaller. Using water as a medium, the stones are sucked into the filter component through the negative pressure suction machine through the crushing component channel (6). Step 5: The ground stones enter the bottle (26), the filter screen (30) separates the water from the stones, and the stones are collected and processed uniformly.