Calculus crushing and sucking equipment for urinary surgery

Abstract

The urinary surgery calculus crushing and sucking equipment comprises an operating handle, a negative pressure suction tube and an expansion part, one end of the negative pressure suction tube is arranged in the operating handle, the expansion part detachably sleeves a suction head, and the expansion part can controllably expand and support and expand the urethra when the negative pressure suction tube is placed in, so that a smooth movement path is provided for the negative pressure suction tube; the negative pressure suction tube comprises a suction head, a large-particle calculus crushing part and a calculus push-out part are arranged on the suction head, the large-particle calculus crushing part vibrates and crushes large calculus sucked into the negative pressure suction tube, and the calculus push-out part pushes out the large calculus which cannot be crushed in the negative pressure suction tube. The urinary calculus crushing device has the advantages that the negative pressure suction tube is used for sucking broken stones, the expansion part arranged at the head end of the negative pressure suction tube is unfolded to expand the urethra, the suction tube is ensured to move smoothly without touching the urethra, the comfort degree is improved, the large particle crushing part is used for secondarily crushing large stones, the use is convenient, the stones difficult to crush in the suction tube are discharged by the stone push-out part, and the suction tube is prevented from being blocked.

Description

Technical Field

[0001] The invention specifically relates to a urology stone crushing and aspiration device. Background Art

[0002] Urological stones are common diseases of the urinary system, mainly including kidney stones, ureteral stones, bladder stones and urethral stones. These stones can be treated through lithotripsy.

[0003] Lithotripsy is one of the commonly used methods for the treatment of urological stones. Lithotripsy mainly includes two types: extracorporeal lithotripsy and intracorporeal lithotripsy. Extracorporeal lithotripsy, also known as extracorporeal shock wave lithotripsy, locates the stones through X-rays or ultrasound, and then uses shock waves to break up the stones in the body, which are then excreted from the body through the urinary tract. This method has the advantages of no surgery, no pain, no side effects, short treatment time, and a high stone excretion rate.

[0004] In-vivo lithotripsy is a minimally invasive surgical method. During the operation, the ureter or kidney is entered through the urethra, and the stones in the urinary system are found under direct vision. Then, pneumatic ballistics or holmium laser lithotripsy are used to crush the stones into small fragments that are easy to excrete. For example, ureteroscopic holmium laser lithotripsy uses holmium laser to crush the stones, and then the fragments are removed from the body through a ureteroscope combined with a stone removal device. Existing stone removal equipment includes basket-type stone removal equipment and negative pressure suction stone removal equipment. The basket-type stone removal equipment uses a tube with a stone removal basket to enter the urethra and use the basket to remove stones. Since the structure of the crushed stones is irregular, when the stone basket is used to assist in removal, the stone basket is limited by its own structure and cannot fully wrap the stone. Therefore, for larger or angular stones, it will cause certain trauma to the ureter and urethral mucosa, and the patient will feel severe discomfort.

[0005] Compared with the basket-type stone removal device, the negative pressure suction stone removal device causes less damage to patients and has been used more and more in recent years. It uses a negative pressure suction tube to enter through the urethra and use negative pressure to remove the broken stones. After the stones are broken, the stones discharged through the suction tube are generally the size of soybeans. However, when observing the stone fragments through a ureteroscope, the specific size of the stones cannot be obtained and can only rely on the doctor's experience, which will cause the problem of stones blocking the suction tube; if the staff pulls out the suction tube and then clears it, the operation time will be extended; at the same time, if the staff sprays liquid in the opposite direction through the suction tube to flush the stones, the stones will fly out under the impact of the liquid and hit the internal organs or tissues of the human body, causing damage to the human body.

[0006] In addition, since the stones are removed through the urethra, the suction tube needs to be moved frequently during the stone removal process, which causes high stimulation to the patient's urethra and also reduces the patient's comfort level. Therefore, a stone crushing and suction device is needed that is easy to use, prevents suction tube blockage, has high comfort and little stimulation to the patient.

[0007] In the Chinese patent: CN202111371048.X, the name is: A urological stone crushing and suction device, which records that it includes a body; a delivery tube, which extends into the human body and is used to widen and support the surgical channel; a sound-generating device, which is located in the body and is used to emit ultrasonic waves; a searchlight device, one end of which is connected to the body and the other end is located in the delivery tube, which is used to illuminate the surgical screen; a crushing device, one end of which is connected to the sound-generating device and the other end is located in the delivery tube, which is used to crush stones; a suction device, including a suction tube; one end of the suction tube is connected to the body and the other end is located in the delivery tube, which is used to suck the crushed stones; it is characterized in that: the other end of the crushing device is located in the delivery tube, and an anti-blocking unit is provided at the front end of the suction tube; the anti-blocking unit can prevent the suction device from being blocked.

[0008] As shown in the attached figure of patent CN202111371048.X, this patent mainly uses an anti-blocking unit to prevent relatively large stones from blocking the tube opening, which can achieve the purpose of preventing stones from blocking the suction tube, but larger stones still need to be broken up secondary by laser, which is inconvenient to use. In addition, the device has no protection for the urethra when removing stones, and the frequent movement of the suction tube during stone removal greatly stimulates the urethra, resulting in poor patient comfort. Summary of the invention

[0009] The technical problem to be solved by the present invention is that the existing stone removal equipment causes great stimulation to the urethra during use, has poor comfort, is easily blocked, and is inconvenient to use.

[0010] In view of the above technical problems, a urology stone crushing and suction device is proposed; the device is realized by the following technical scheme: a urology stone crushing and suction device comprises an operating handle, a negative pressure suction tube and an expansion part, one end of the negative pressure suction tube is arranged in the operating handle, the expansion part is detachably sleeved on the outside of the suction head, and the expansion part can be controllably expanded when the negative pressure suction tube is inserted, so as to support and widen the urethra and provide a smooth movement path for the negative pressure suction tube; The negative pressure suction tube includes a suction head, on which a large-particle stone crushing part and a stone pushing part are arranged. The large-particle stone crushing part vibrates and crushes larger stones sucked into the negative pressure suction tube, and the stone pushing part pushes out larger stones that cannot be crushed in the negative pressure suction tube. The vibration intensity of the large-particle stone crushing part on the stones and the pushing out of the stones by the stone pushing part can be controlled and adjusted by an operating handle.

[0011] Preferably, the large-particle stone crushing section includes a vibration component, an extrusion component and a mounting ring. The vibration component and the extrusion component are cross-distributed and connected, and one end is hinged on the mounting ring. The vibration component vibrates the large-particle stones attracted into the suction head, and the extrusion component cooperates with the vibration component to cyclically squeeze the large-particle stones to promote stone breakage. The setting of the large-particle stone crushing section facilitates the crushing of slightly larger stones by the large-particle stone crushing section, facilitates the removal of larger stones, prevents the suction tube from being blocked, and also improves the efficiency of stone removal.

[0012] Preferably, the vibration assembly comprises a plurality of vibration plates distributed at intervals, and the vibration plates vibrate to promote stone crushing after being energized. An extrusion block is arranged on each vibration plate, and the extrusion block contacts the stone. The arrangement of the vibration assembly facilitates the vibration of the stone and promotes stone crushing.

[0013] Preferably, the extrusion component includes an extrusion airbag component, which includes a plurality of V-shaped airbags distributed at intervals. The V-shaped airbags can be inflated and deflated to drive the vibration component to expand and close, and reciprocately extrude the stone particles. The arrangement of the extrusion component facilitates the reciprocating extrusion of the stones through the extrusion component, promotes the crushing of larger stones, and is easy to use.

[0014] Preferably, the stone ejection part comprises an installation box, a push piece and a push rod, the push piece is hinged on the push rod, the push rod is inserted in the installation box, the push rod is connected to the stone ejection part control component in the operating handle through a pull rope, and pulling the pull rope can drive the push rod to move and eject the stone in the negative pressure suction tube. The setting of the stone ejection part facilitates the ejection of stones blocked in the negative pressure suction tube through the stone ejection part to prevent the negative pressure suction tube from being blocked, and the stone ejection part is easy to use.

[0015] Preferably, the push piece is connected to the mounting box through a tension spring, and when the push rod moves to push out the stone, the push piece is simultaneously unfolded. The setting of the push piece facilitates the contact between the push piece and the stone to push out the stone, thereby effectively preventing the suction tube from being blocked.

[0016] Preferably, the operating handle includes a control unit and a stone pushing unit control component, the control unit is connected to an external host through a control panel, and the squeezing pressure on large-particle stones, the vibration power and the pressure on the negative pressure suction of the stones can be adjusted through the control unit, the stone pushing unit control component is connected to the stone pushing unit, and the control trigger in the stone pushing unit control component can be pulled to controllably drive the push rod in the stone pushing unit to move. The setting of the stone pushing unit control component makes it easy to control the stone pushing unit through the stone pushing unit control component to push out stones blocked in the negative pressure suction tube, thereby preventing the negative pressure suction tube from being blocked, and the use is convenient.

[0017] Preferably, a suction head closing portion is provided on the large-particle stone crushing portion, and the suction head closing portion includes a closing airbag assembly and an opening airbag assembly, and the closing airbag assembly and the opening airbag assembly are cross-distributed, and the closing airbag assembly controls the switch of the opening of the suction head, and the opening airbag assembly cooperates with the large-particle stone crushing portion to crush larger stones. The arrangement of the suction head closing portion enables the suction head closing portion to prevent the broken stones from splashing and damaging tissues when the large-particle stone crushing portion is used to crush stones.

[0018] Preferably, the expansion part includes an inner sleeve, an airbag and an air supply tube. The airbag mounting seat is on the inner sleeve, the inner sleeve is sleeved on the outside of the suction head, and the air supply tube is connected to the airbag. The expansion and resetting of the expansion part can be controlled by the air supply tube, and the inner diameter of the expansion part after expansion is larger than the outer diameter of the negative pressure suction tube. Such an arrangement facilitates providing a stable and unobstructed movement path for the negative pressure suction tube, prevents irritation to the urethra when the suction tube moves, and improves the patient's comfort.

[0019] Preferably, a V-shaped limiting cavity is provided on the inner sleeve at the position where the large-particle stone crushing part and the closing part of the suction head cooperate. The inner sleeve cooperates with the large-particle stone crushing part and the closing part of the suction head through the V-shaped limiting cavity and is fixed on the suction head. The setting of the V-shaped limiting cavity enables the expansion part to be connected to or disassembled from the negative pressure suction tube as needed, which is easy to use.

[0020] Compared with the prior art, the present invention has the following beneficial effects: The technical solution of the present invention uses a negative pressure suction tube to attract the crushed stones. An expansion part for expanding the urethra is arranged at the head end of the negative pressure suction tube. When the negative pressure suction tube is inserted, the expansion part is unfolded to support and widen the urethra, providing a smooth movement path for the negative pressure suction tube. During the entire suction process, the negative pressure suction tube does not contact the urethra, which has little stimulation to the patient and high comfort. The large-particle stone crushing unit arranged at the front end of the negative pressure suction tube is used to perform secondary crushing on larger stones, avoiding the need to replace equipment for secondary crushing. It is easy to use and improves efficiency. For stones that cannot be crushed by the large-particle stone crushing unit, the stone pushing unit arranged at the head end of the negative pressure suction tube can push out the difficult-to-crush stones, preventing the suction tube from being blocked and ensuring the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a three-dimensional schematic diagram of the operating handle; Figure 3 A three-dimensional diagram of the operating handle Figure 2 ; Figure 4 This is the exploded view of the operating handle; Figure 5 It is a three-dimensional schematic diagram of the negative pressure suction tube; Figure 6 It is a three-dimensional schematic diagram of the negative pressure suction head; Figure 7 This is a three-dimensional schematic diagram of the large-particle stone crushing part; Figure 8 This is an exploded view of the three-dimensional schematic diagram of the large-particle stone crushing part; Fig. 9 It is a schematic diagram of the closing part of the suction head; Fig.10 This is a schematic diagram of the stone crushing of the present invention; Fig.11 This is a three-dimensional schematic diagram of the stone pushing part; Fig.12 This is a schematic diagram of the stone pushing part at work; Fig.13 Explosion diagram of the part to push out the stone; Fig.14 It is a schematic diagram when the extension part is expanded; Fig.15 It is a partial cross-sectional view of the extension part; Fig.16 It is an exploded view of the present invention; Explanation of the reference numerals: 1-operating handle, 101-upper cover, 102-lower cover, 103-adjustment platform, 104-trigger mounting platform, 105-control unit, 106-ultrasonic power adjustment slider, 107-negative pressure adjustment slider, 108-scale, 109-suction head closing control button, 110-extrusion airbag angle adjustment control button, 111-crushing control button, 112-stone push-out unit control assembly, 113-control trigger, 114-hinge rod, 115-first return spring, 116-first pulley, 2-negative pressure suction tube, 21-suction head, 22-functional boss, 23-stone push-out unit mounting groove, 24-functional hole, 3-large particle stone crushing unit, 301-vibration assembly, 302-vibration plate, 303-ultrasonic generator, 304-protection tube, 305-extrusion assembly , 306-extrusion block, 307-extrusion airbag assembly, 308-cutting strip, 309-V-shaped airbag, 310-anti-slip strip, 311-installation ring, 312-first air guide tube, 313-second air guide tube, 314-power supply line, 4-suction head closing part, 41-closed airbag assembly, 42-open airbag assembly, 5-stone pushing part, 501-installation box, 502-push rod slide groove, 503-second pulley, 504-pull rope, 505-push sheet, 506-connecting rod, 507-second return spring, 508-third return spring, 509-push rod, 510-hinge interface, 511-tension spring, 512-spring connecting sheet, 6-expansion part, 61-inner sleeve, 62-airbag, 63-V-shaped limit cavity, 64-air supply tube, 7-host, 71-display screen, 72-host control button. DETAILED DESCRIPTION

[0022] The following will be combined with the attached embodiment of the present invention Figure 1-16 , the technical solutions in the embodiments of the present invention are described in detail. Example

[0023] like Figure 1 , 14 As shown in Figure 16, a urological stone crushing and suction device includes an operating handle 1, a negative pressure suction tube 2, a large-particle stone crushing part 3, a suction head closing part 4, a stone pushing part 5, an expansion part 6 and a host 7 for control.

[0024] One end of the negative pressure suction tube 2 passes through the operating handle 1 and is connected to the main unit 7, and the other end is provided with a large-particle stone crushing part 3 and a suction head closing part 4. The stone pushing part 5 is arranged in the negative pressure suction tube 2, close to the large-particle stone crushing part 3, and the expansion part 6 is detachably mounted on the negative pressure suction tube 2, and the urethra can be expanded through the expansion part 6.

[0025] The main function of the negative pressure suction tube 2 is to use negative pressure to attract the stones after laser pulverization, so as to facilitate the discharge of the stones.

[0026] The main function of the operating handle 1 is to facilitate the user to hold it. At the same time, a control unit 105 is also provided on the operating handle 1, through which various functions of the device can be controlled and adjusted, which is convenient for use.

[0027] The main function of the large-particle stone crushing section 3 is to perform secondary crushing on the large stones that are difficult to suck out after laser crushing, so as to facilitate the discharge of stones, improve the removal efficiency, avoid the replacement of equipment, be easy to use, and reduce the operation time.

[0028] The main function of the suction head closing part 4 is to close the port of the negative pressure suction tube 2 when the large-particle stone crushing part 3 crushes the stones, so as to prevent the stones crushed by the large-particle stone crushing part 3 from splashing and damaging the tissues.

[0029] The main function of the stone pushing part 5 is to use the stone pushing part 5 to push out the larger and harder stones that are sucked into the negative pressure suction tube 2 and cannot be crushed by the large-particle stone crushing part 3 from the negative pressure suction tube 2, to prevent the stones from clogging the negative pressure suction tube 2 and ensure the normal operation of the equipment.

[0030] The main function of the expansion part 6 is to expand and dilate when the negative pressure suction tube 2 is inserted through the urethra to support the urethra. After expansion, the inner diameter of the expansion part 6 is slightly larger than the outer diameter of the negative pressure suction tube 2. The negative pressure suction tube 2 can move freely in the channel formed by the expansion part 6 without contacting the inner wall of the patient's urethra, effectively reducing the stimulation of the urethra when the negative pressure suction tube 2 moves to remove stones, thereby improving the comfort of use.

[0031] The host 7 is an existing device, and its main function is to connect with the negative pressure suction tube 2, the operating handle 1 and other components that need to be controlled. A negative pressure suction pump is arranged in the host 7. A display screen 71 and a host control button 72 are also arranged on the host 7. The entire device can be controlled and parameters adjusted through the display screen 71 and the host control button 72.

[0032] like Figure 2 , 3 As shown in Figure 4, the operating handle 1 includes an upper cover 101, a lower cover 102, a control unit 105 and a stone ejection unit control component 112. The upper cover 101 and the lower cover 102 are connected by screws to form a complete operating handle 1. The control unit 105 is arranged in the upper cover 101, and the stone ejection unit control component 112 is arranged in the lower cover 102.

[0033] The upper cover 101 and the lower cover 102 are handles made of plastic. Chambers for installing various components are opened in the upper cover 101 and the lower cover 102. The control unit 105 and the stone ejection unit control component 112 are both installed in the installation chamber formed by the upper cover 101 and the lower cover 102.

[0034] In order to facilitate the installation of the stone ejection control component 112, a rectangular platform is protruded perpendicular to the inner arc surface near the edge of the lower cover 102, and this platform is named as the trigger mounting platform 104. The stone ejection control component 112 is installed on this trigger mounting platform 104.

[0035] In order to facilitate operation and installation of the control unit 105, a rectangular platform is recessed on the arc surface near the middle of the upper cover 101, and this platform is named adjustment platform 103. Two rectangular long holes are provided at intervals along the direction in which the adjustment platform 103 extends, and these holes are named adjustment slide holes. The ultrasonic power adjustment slider 106 and the negative pressure adjustment slider 107 in the control unit 105 are respectively installed in these adjustment slide holes. At the same time, in order to facilitate the installation of the remaining control buttons, a control button installation hole is also provided between the two adjustment slide holes on the adjustment platform 103, and each control button is respectively installed in this installation hole.

[0036] The control unit 105 includes a control panel, an ultrasonic power adjustment slider 106, a negative pressure adjustment slider 107, a suction head closing control button 109, an extrusion airbag angle adjustment control button 110 and a crushing control button 111. The control panel is connected to the host 7 through a wire. There are corresponding functional contacts on the control panel. The ultrasonic power adjustment slider 106, the negative pressure adjustment slider 107, the suction head closing control button 109, the extrusion airbag angle adjustment control button 110 and the crushing control button 111 are respectively in contact with the functional contacts.

[0037] The power of the vibration component 301 in the large-particle stone crushing section 3 can be adjusted by the ultrasonic power adjustment slider 106 to improve the stone crushing effect. The negative pressure attraction of the negative pressure suction tube 2 can be adjusted by the negative pressure adjustment slider 107 to facilitate the suction of stones. The opening and closing of the suction head closing part 4 can be controlled by the suction head closing control button 109 to prevent stones from splashing during stone crushing. The angle of the squeezing airbag angle adjustment control button 110 can be controlled to fix the expansion part 6. The large-particle stone crushing section 3 can be opened by the crushing control button 111 to crush the stones.

[0038] In order to intuitively display the adjustment positions of the ultrasonic power adjustment slider 106 and the negative pressure adjustment slider 107 , scales 108 representing the adjustment positions of the two are printed on both sides of the upper cover 101 .

[0039] The stone ejection control assembly 112 includes a control trigger 113 and a first pulley 116. A rectangular hinged rod 114 is integrally connected to the control trigger 113 at the end of the control trigger 113. The control trigger 113 is hinged to the trigger mounting platform 104 through the hinged rod 114, and the control trigger 113 is exposed outside the operating handle 1 to facilitate user operation.

[0040] In order to facilitate the installation of the first pulley 116, a sloped hinge seat is provided at the end of the trigger mounting platform 104. The first pulley 116 is connected to the hinge seat through a mounting shaft pin. The pull rope 504 connected to the stone ejecting part 5 passes around the first pulley 116 and is connected to the hinge rod 114. When the control trigger 113 is pulled, the hinge rod 114 drives the pull rope 504 to move, thereby realizing the control of the stone ejecting part 5.

[0041] When the control trigger 113 is released, in order to facilitate the automatic reset of the control trigger 113, a first reset spring 115 is fixed on the other side of the hinged rod 114, one end of the first reset spring 115 is against the hinged rod 114, and the other end is against the trigger mounting platform 104. When the control trigger 113 is pulled, the first reset spring 115 is compressed.

[0042] In order to prevent the pull rope 504 from falling off the first pulley 116, the first pulley 116 is preferably an existing anti-falling pulley.

[0043] like Figure 1 , 5 As shown in Figure 6, the negative pressure suction tube 2 includes a tube body and a suction head 21 arranged at the end of the tube body. The tube body is made of the same material as the existing medical negative pressure suction tube. The suction head 21 is made of a material that meets medical standards and has a certain hardness. One end of the suction head 21 is fixedly connected to the end of the tube body.

[0044] In order to facilitate the control of the large-particle stone crushing part 3, the suction head closing part 4 and the stone pushing part 5, a functional boss 22 is protruded outward on the curved surface of the tube body and the suction head 21. The functional boss 22 is fixedly connected to the tube body and the suction head 21 and is distributed along the extension direction of the tube body and the suction head 21. In order to improve comfort, the connection between the functional boss 22 and the tube body and the suction head 21 is smooth.

[0045] A plurality of circular functional holes 24 are provided inside and along the functional boss 22, a power supply line 314 and an air duct for supplying power and air to the large-particle stone crushing part 3 pass through the functional holes 24 and are connected to the large-particle stone crushing part 3, a pull rope 504 for controlling the movement of the stone pushing part 5 and an air duct for controlling the switch of the suction head closing part 4 pass through the functional holes 24 and are connected to the stone pushing part 5 and the suction head closing part 4.

[0046] In order to facilitate the installation of the stone pushing part 5, a rectangular stone pushing part installation groove 23 is opened on the inner wall of the end of the suction head 21, and the stone pushing part 5 is fixed in this stone pushing part installation groove 23. The stone pushing part 5 can be fixed in the stone pushing part installation groove 23 by screws or glue, as long as the stability of the fixation is ensured. In this embodiment, glue is preferably used for fixing.

[0047] like Figure 7 ,8 As shown in Figures 9 and 10, the large-particle stone crushing section 3 includes a vibration component 301, an extrusion component 305 and a mounting ring 311, wherein the vibration component 301 and the extrusion component 305 are cross-distributed to form a circular ring with a cavity inside, and this cavity is named a crushing cavity, and one end of the vibration component 301 and the extrusion component 305 are respectively hinged on the mounting ring 311, and the vibration component 301 and the extrusion component 305 can be expanded and contracted along the hinge, and the mounting ring 311 hinged to the vibration component 301 and the extrusion component 305 is fixed to the end of the suction head 21.

[0048] The main function of the vibration component 301 is to generate ultrasonic waves to loosen the stones in the crushing cavity, thereby facilitating the crushing of larger stones.

[0049] The function of the squeezing component 305 is to cooperate with the vibration component 301 to cyclically squeeze the stones in the crushing chamber, promote the crushing of larger stones in the crushing chamber, prevent the blockage of the negative pressure suction tube 2, and facilitate the removal of larger stones.

[0050] The function of the mounting ring 311 is to provide a mounting carrier for the vibration assembly 301 and the extrusion assembly 305 . Meanwhile, the vibration assembly 301 and the extrusion assembly 305 are connected to the suction head 21 through the mounting ring 311 .

[0051] The vibration assembly 301 includes multiple vibration plates 302. In this embodiment, four vibration plates 302 are preferably arranged. Each vibration plate 302 is V-shaped. The four vibration plates 302 are evenly distributed on the mounting ring 311 and connected to the mounting ring 311 through a flexible plastic connecting piece, so that the vibration plate 302 can bend and rotate along the connection.

[0052] The outer side surface and the inner side surface of the vibration plate 302 are arc-shaped, that is, the outer diameter and the inner diameter of the entire large-particle stone crushing part 3 are the same as the outer diameter and the inner diameter of the suction head 21.

[0053] There is a groove on the inner side of the vibration plate 302, and a miniature ultrasonic generator 303 is placed in the groove. When the miniature ultrasonic generator 303 is powered on, it can emit ultrasonic waves and drive the vibration plate 302 to vibrate, thereby promoting the crushing of stones.

[0054] The miniature ultrasonic generator 303 is an existing device and can be used directly.

[0055] The extrusion assembly 305 includes an extrusion block 306 and an extrusion airbag assembly 307. The extrusion block 306 is arranged on the vibration plate 302, and the extrusion airbag assembly 307 is connected to the vibration plate 302. By inflating and deflating the extrusion airbag assembly 307, the large-particle stone crushing part 3 can be driven to expand and contract, and cooperate with the extrusion block 306 to realize reciprocating extrusion of the stone, effectively promoting the crushing of the stone.

[0056] The extrusion block 306 is a metal block with a V-shaped cross-section. The extrusion block 306 is fixed to the inner side of the vibration plate 302 by a fixing plate. In order to improve the stone crushing effect of the extrusion block 306, a plurality of rectangular metal sheets are longitudinally protruded on the surface of the extrusion block 306. The metal sheets are named cutting strips 308. When the extrusion assembly 305 reciprocates to extrude the stone, the cutting strips 308 contact the stone to promote stone crushing. In addition, in order to prevent the stone from sliding during extrusion, a plurality of rectangular bosses are laterally protruded at the other end of the extrusion block 306. The bosses are named anti-slip strips 310. Anti-slip patterns are engraved on the surface of the anti-slip strips 310. The anti-slip strips 310 can prevent the stone from sliding under force during extrusion, thereby improving the stone crushing effect.

[0057] The extrusion airbag assembly 307 is composed of a plurality of inverted "V"-shaped V-shaped airbags 309 that are connected to each other. The shape of the V-shaped airbag 309 is similar to that of an accordion cover. When inflated, the V-shaped airbag 309 expands along the tip of the "V" shape like a fan. A V-shaped airbag 309 is arranged between two vibration plates 302. In this embodiment, there are four vibration plates 302 in the vibration assembly 301, and there are four V-shaped airbags 309 in the extrusion assembly 305. The vibration plates 302 and the V-shaped airbags 309 are cross-distributed, and the two side edges of the V-shaped airbag 309 are fixedly connected to the two side edges of the vibration plate 302. When the V-shaped airbag 309 is inflated and expanded, it will drive the vibration plate 302 to expand synchronously along the hinge. The large-particle stone crushing part 3 is deformed from a circular tube to a trumpet shape as a whole, which is convenient for crushing larger stones.

[0058] The connection between the V-shaped airbag 309 and the mounting ring 311 is the same as that of the vibration plate 302, and is connected by an elastic plastic sheet. In this way, there will be no leakage when the large-particle stone crushing part 3 is expanded or contracted, thereby ensuring the sealing performance (the elastic plastic sheet is not drawn in the figure).

[0059] In order to facilitate the air supply to the extrusion airbag assembly 307 and the power supply to the vibration assembly 301, the first air guide ring 312, the second air guide ring 313 and the power supply line 314 are embedded in the outer side surface of the mounting ring 311, the first air guide ring 312 is connected to the V-shaped airbag 309 in the extrusion airbag assembly 307, the power supply line 314 is connected to the vibration plate 302, and the second air guide ring 313 is connected to the airbag in the suction head closing part 4. In addition, the first air guide ring 312, the second air guide ring 313 and the power supply line 314 pass through the functional hole 24 on the negative pressure suction tube 2 and are connected to the operating handle 1 and the main unit 7 to realize the control of the large-particle stone crushing part 3 and the suction head closing part 4.

[0060] like Fig. 9 and 10As shown, the closing part 4 of the suction head includes a closing airbag component 41 and an opening airbag component 42. The closing airbag component 41 and the opening airbag component 42 are each composed of four V-shaped airbags 309, and the whole is in a circular tubular shape. The inner diameter and outer diameter of the closing part 4 of the suction head are the same as those of the large-particle stone crushing part 3, and the closing airbag component 41 and the opening airbag component 42 are cross-distributed and connected to each other.

[0061] The main function of the closing airbag component 41 is to close the open end when it is contracted, and the main function of the opening airbag component 42 is to expand and cooperate with the large-particle stone crushing part 3 when it is inflated to crush the stones.

[0062] The V-shaped airbag 309 in the expanded airbag assembly 42 is distributed in an inverted "V" shape, and is connected to and communicated with the V-shaped airbag 309 in the squeezed airbag assembly 307, so that when the squeezed airbag assembly 307 is inflated, the expanded airbag assembly 42 is also inflated synchronously, and when the squeezed airbag assembly 307 is unfolded, the expanded airbag assembly 42 is also unfolded accordingly.

[0063] The V-shaped airbag 309 in the closed airbag assembly 41 is distributed in a "V" shape. The V-shaped airbag 309 in the closed airbag assembly 41 is fixedly connected to the side of the V-shaped airbag 309 of the open airbag assembly 42. When the expanded end of the open airbag assembly 42 is expanded, the corresponding closed airbag assembly 41 is also expanded. Similarly, when the closed end of the closed airbag assembly 41 is closed, the corresponding open airbag assembly 42 is closed to prevent the crushed stones from splashing.

[0064] In order to facilitate the insertion of the negative pressure suction tube 2, a protective tube 304 is sheathed on the outside of the large-particle stone crushing part 3 and the suction head closing part 4. The protective tube 304 is made of a flexible material, such as silicone or rubber. The protective tube 304 can ensure the smoothness of the surface of the large-particle stone crushing part 3 and the suction head closing part 4, which is convenient for the insertion of the negative pressure suction tube 2. When the openings of the large-particle stone crushing part 3 and the suction head closing part 4 are expanded, the protective tube 304 can also be expanded accordingly, thereby ensuring the normal use of the large-particle stone crushing part 3 and the suction head closing part 4.

[0065] like Fig.11 , 12 As shown in 13, the stone ejection part 5 includes a mounting box 501, a push piece 505 and a push rod 509. The mounting box 501 is mounted in the stone ejection part mounting groove 23 in the suction head 21. The push piece 505 is hinged on the push rod 509. The push rod 509 is movably inserted in the mounting box 501 and is connected to the stone ejection part control component 112 in the operating handle 1. The stone ejection part control component 112 can control the push rod 509 to move up and down in the mounting box 501 to push the stones that cannot be crushed out of the negative pressure suction tube 2.

[0066] The mounting box 501 is a plastic box with a rectangular cross-section, and in order to ensure the flatness of the inner wall of the suction head 21 and prevent it from being stuck to the stone, the surface of the mounting box 501 is arc-shaped, that is, after the mounting box 501 is installed in the mounting groove 23 of the stone ejection part, the surface of the mounting box 501 is flush with the inner side surface of the suction head 21.

[0067] In order to facilitate the installation of the push rod 509, a rectangular groove is provided on the end surface of the installation box 501, perpendicular to the installation box 501 and along the extension direction of the installation box 501. This groove is named the push rod slide groove 502, and the push rod 509 is inserted into the push rod slide groove 502.

[0068] The push piece 505 is a plastic sheet with a rectangular cross-section. A rectangular connecting rod 506 protrudes from one side of the push piece 505, and there is a hinge seat on the connecting rod 506. The push piece 505 is hinged to the push rod 509 through the hinge seat. When the push rod 509 is stored in the installation box 501 and not pushed out, the push piece 505 does not unfold. The surface of the push piece 505 is flush with the inner side surface of the attraction head 21, ensuring the flatness of the inner wall of the attraction head 21 to prevent stones from being stuck.

[0069] In order to facilitate the installation of the push piece 505 , a rectangular hinge hole 510 is concave at the end of the push rod 509 perpendicular to the end surface, and the push piece 505 is hinged in the hinge hole 510 .

[0070] In order to facilitate the control of the extension and retraction of the push rod 509 by the pull rope 504, a second pulley 503 is installed at the open end of the installation box 501 using the installation shaft. The pull rope 504 passes around the pulley and is connected to one end of the push rod 509 deep installation box 501. When the pull rope 504 is pulled, it can drive the push rod 509 to move upward along the connecting rod 506, and push out the larger and uncrushable stones stuck in the suction head 21. In order to prevent the pull rope 504 from falling off the second pulley 503, the second pulley 503 preferably adopts an existing anti-slip pulley.

[0071] In order to improve the pushing effect, a spring connecting piece 512 is fixed on the connecting rod 506 of the pushing piece 505. The spring connecting piece 512 is a rectangular plastic piece with a round hole. At the same time, a spring connecting piece 512 is also arranged at the bottom of the pushing rod slide groove 502. The tension spring 511 connects the two spring connecting pieces 512. In this way, when extended, the pushing piece 505 rotates along the hinge under the action of the tension spring 511 and unfolds, which is convenient for pushing the stone to move.

[0072] To facilitate the resetting of the push rod 509, a spring connecting piece 512 is fixed to each of the two ends of the push rod 509 near the open end, and a spring connecting piece 512 is also fixed to the corresponding position of the bottom of the installation box 501. The second resetting spring 507 and the third resetting spring 508 are respectively hung on the spring connecting pieces 512 to connect the push rod 509 and the installation box 501. When the push rod 509 moves, the second resetting spring 507 and the third resetting spring 508 are stretched by the force. When the pull rope 504 is released, the push rod 509 is reset under the action of the second resetting spring 507 and the third resetting spring 508.

[0073] In order to avoid position interference, the stone pushing part 5 is tilted in the suction head 21, and the front end of the push rod 509 is closer to the center of the suction head 21. This can avoid position interference between the push rod 509 and the large-particle stone crushing part 3 and the suction head closing part 4 when the push rod 509 is extended.

[0074] like Figure 1 , 14 As shown in Figures 15 and 16, the extension portion 6 includes an inner sleeve 61 and an air bag 62. The inner sleeve 61 is a plastic tube with a circular cross-section. The main function of the inner sleeve 61 is to provide a stable operating channel for the negative pressure suction tube. The inner diameter of the inner sleeve 61 is slightly larger than the outer diameter of the negative pressure suction tube 2.

[0075] The airbag 62 is an existing inflatable airbag, which is sleeved on the outside of the inner sleeve 61, and the two will not undergo relative displacement. Regarding the inflation and deflation of the airbag 62, this embodiment preferably utilizes an air supply tube 64 with a balloon to connect the airbag 62, and inflates and deflates the airbag 62 through the balloon to achieve expansion of the airbag 62.

[0076] When the negative pressure suction tube 2 is inserted, in order to prevent the expansion part 6 from falling off, a V-shaped limiting cavity 63 is provided in the inner sleeve 61 perpendicular to the inner wall concave portion, and when the large-particle stone crushing part 3 and the suction head closing part 4 are slightly inflated by squeezing the airbag angle adjustment control button 110, the large-particle stone crushing part 3 and the suction head closing part 4 will expand at the two joints to become a round tube with a large diameter in the middle and small diameters at both ends, so that it can cooperate with the V-shaped limiting cavity 63 to stably cover the expansion part 6 on the outside of the negative pressure suction tube 2, thereby facilitating the insertion of the negative pressure suction tube, and after passing through the urethra, the airbag 62 is inflated to expand the urethra, and at this time, the large-particle stone crushing part 3 and the suction head closing part 4 are deflated to release the limiting cooperation with the V-shaped limiting cavity 63, and the negative pressure suction tube 2 can move freely in the inner sleeve 61 without causing damage to the urethra, thereby improving the patient's comfort.

[0077] The use process of this embodiment is as follows: when in use, first stably put the expansion part 6 on the outside of the negative pressure suction tube 2, then insert the negative pressure suction tube 2, and then use the expansion part 6 to expand to create a channel for the movement of the negative pressure suction tube 2, and then the stones after laser crushing can be found under the guidance of the endoscope. For smaller stones, they can be directly sucked out, and the size of the negative pressure can be adjusted by the negative pressure adjustment slider 107 to facilitate the removal of stones. When encountering stones larger than the inner diameter of the negative pressure suction tube 2, press the crushing control button 111 to control the large-particle stone crushing part 3 to work, and vibrate and cyclically squeeze and crush larger stones to facilitate the removal of stones. When encountering harder stones that cannot be crushed, pull the control trigger 113 to drive the push rod 509 to move and push the stone out of the suction head 21 without affecting the continued suction of the remaining stones. It is easy to use.

[0078] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A urology stone crushing and aspiration device, characterized by: The invention comprises an operating handle (1), a negative pressure suction tube (2) and an expansion part (6), wherein one end of the negative pressure suction tube (2) is arranged in the operating handle (1), and the expansion part (6) is detachably sleeved on the outside of the suction head (21); when the negative pressure suction tube (2) is inserted, the expansion part (6) can be controllably expanded to support and widen the urethra, thereby providing a smooth movement path for the negative pressure suction tube (2); The negative pressure suction tube (2) comprises a suction head (21), and the suction head (21) is provided with a large-particle stone crushing section (3) and a stone pushing section (5). The large-particle stone crushing section (3) vibrates and crushes larger stones sucked into the negative pressure suction tube (2), and the stone pushing section (5) pushes out larger stones that cannot be crushed in the negative pressure suction tube (2). The vibration intensity of the large-particle stone crushing section (3) on the stones and the pushing intensity of the stones by the stone pushing section (5) can be controlled and adjusted by an operating handle (1).

2. The urology stone crushing and suction device according to claim 1, characterized in that: The large-particle stone crushing section (3) comprises a vibration component (301), an extrusion component (305) and a mounting ring (311). The vibration component (301) and the extrusion component (305) are cross-connected and one end is hinged on the mounting ring (311). The vibration component (301) vibrates the large-particle stones attracted into the attraction head (21), and the extrusion component (305) cooperates with the vibration component (301) to cyclically extrude the large-particle stones, thereby promoting stone breakage.

3. The urology stone crushing and aspiration device according to claim 2, characterized in that: The vibration assembly (301) comprises a plurality of vibration plates (302) distributed at intervals. When the vibration plates (302) are energized, they vibrate to promote stone crushing. An extrusion block (306) is arranged on each vibration plate (302), and the extrusion block (306) is in contact with the stone.

4. The urology stone crushing and aspiration device according to claim 2, characterized in that: The squeezing component (305) includes a squeezing airbag component (307), wherein the squeezing airbag component (307) includes a plurality of V-shaped airbags (309) distributed at intervals. The V-shaped airbags (309) are inflated and deflated to drive the vibration component (301) to expand and close, thereby reciprocatingly squeezing the stone particles.

5. The urology stone crushing and suction device according to claim 1, characterized in that: The stone ejection unit (5) comprises a mounting box (501), a push sheet (505) and a push rod (509); the push sheet (505) is hinged on the push rod (509); the push rod (509) is inserted into the mounting box (501); the push rod (509) is connected to a stone ejection unit control component (112) in the operating handle (1) via a pull rope (504); pulling the pull rope (504) can drive the push rod (509) to move, thereby ejecting the stone in the negative pressure suction tube (2).

6. The urology stone crushing and aspiration device according to claim 5, characterized in that: The push piece (505) is connected to the installation box (501) via a tension spring (511), and when the push rod (509) moves to push out the stone, the push piece (505) is simultaneously unfolded.

7. The urology stone crushing and aspiration device according to claim 1, characterized in that: The operating handle (1) comprises a control unit (105) and a stone pushing unit control component (112). The control unit (105) is connected to an external host (7) via a control panel. The squeezing pressure, vibration power and negative pressure suction pressure on large-particle stones can be adjusted via the control unit (105). The stone pushing unit control component (112) is connected to the stone pushing unit (5). Pulling a control trigger (113) in the stone pushing unit control component (112) can controllably drive a push rod (509) in the stone pushing unit (5) to move.

8. The urology stone crushing and aspiration device according to claim 1, characterized in that: An attraction head closing portion (4) is provided on the large-particle stone crushing portion (3), and the attraction head closing portion (4) comprises a closing airbag component (41) and an opening airbag component (42), wherein the closing airbag component (41) and the opening airbag component (42) are cross-distributed, the closing airbag component (41) controls the opening and closing of the attraction head (21), and the opening airbag component (42) cooperates with the large-particle stone crushing portion (3) to crush larger stones.

9. The urology stone crushing and aspiration device according to claim 1, characterized in that: The expansion portion (6) comprises an inner sleeve (61), an air bag (61) and an air supply pipe (64); the air bag (61) is mounted on the inner sleeve (61); the inner sleeve (61) is sleeved on the outside of the suction head (21); the air supply pipe (64) is connected to the air bag (61); the expansion and resetting of the expansion portion (6) can be controlled by the air supply pipe (64); and the inner diameter of the expansion portion (6) after expansion is greater than the outer diameter of the negative pressure suction tube (2).

10. The urology stone crushing and aspiration device according to claim 9, characterized in that: A V-shaped limiting cavity (63) is provided on the inner sleeve (61) at a position where the large-particle stone crushing portion (3) and the suction head closing portion (4) cooperate with each other. The inner sleeve (61) cooperates with the large-particle stone crushing portion (3) and the suction head closing portion (4) through the V-shaped limiting cavity (63) and is fixed on the suction head (21).

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