Calculus removing and crushing device for calculus surgery

Abstract

The invention relates to a calculus removing and crushing device for a calculus operation, belongs to the technical field of calculus removing and crushing, and solves the problem that large-size calculus is difficult to capture and take out. The stone taking and crushing device comprises a stone catching net basket, an outer fixed pipe, an inner rotating rod, a rotating disc and a sliding rod, wherein the outer fixed pipe and the inner rotating rod rotate relatively; the sliding rod is provided with a spherical protrusion matched with the arc-shaped guide groove in the rotating disc and fixedly connected with the stone catching net basket. The rotating disc rotates synchronously with the inner rotating rod; a linear sliding groove for installing a sliding rod is formed in the end face of the outer fixed pipe, and when the inner rotating rod drives the rotating disc to rotate, the spherical protrusion slides along the arc-shaped guide groove and pushes the sliding rod to slide out of the linear sliding groove to achieve expansion and contraction of the stone catching net basket; and a hydraulic-electric lithotripsy channel is formed in the inner rotating rod, and is used for introducing a hydraulic-electric lithotripsy probe to realize hydraulic-electric lithotripsy of calculi. According to the invention, the capturing and electro-hydraulic lithotripsy of the ultra-large stone are realized, and the success rate of the operation is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stone surgery instruments, and particularly relates to a stone and lithotripsy device for stone surgery. BACKGROUND

[0002] Common bile duct stones are one of the common diseases and frequently-occurring diseases in China. After the common bile duct is blocked by stones, serious complications such as acute cholangitis, obstructive jaundice, acute biliary pancreatitis, etc. are easily induced, and patients often show symptoms such as chills, high fever, abdominal pain, jaundice, and even septic shock in severe cases. Common bile duct stones are usually treated by endoscopic retrograde cholangiopancreatography (ERCP) stone extraction. Compared with traditional open or modern laparoscopic common bile duct exploration and stone extraction surgery, ERCP stone extraction has the advantages of small trauma, high safety factor and rapid recovery, and thus gradually becomes a first-line treatment method.

[0003] The commonly used ERCP stone extraction consumables mainly include stone balloon and stone basket: stones with a diameter less than 1 cm are mostly extracted by balloon, while stones with a diameter greater than 1 cm are mostly extracted by basket. For large common bile duct stones with a diameter greater than 1.5 cm, ERCP-assisted basket mechanical stone extraction or stone extraction after direct vision lithotripsy by peroral cholangioscopy is adopted. However, the existing ERCP technology still has obvious deficiencies in dealing with large common bile duct stones with a diameter greater than 1.5 cm: 1) Large common bile duct stones often cause common bile duct obstruction, and due to the narrow space, it is difficult to extract large common bile duct stones by inserting a stone basket through ERCP; 2) The mechanical stone extraction efficiency of the basket is low, and part of the hard stones are difficult to be crushed by the basket; 3) If the stones cannot be crushed after being extracted, and the stones cannot be dragged out of the common bile duct by the basket, the stone basket cannot be taken out, and only general anesthesia for common bile duct exploration surgery can be selected, which has great risks.

[0004] Therefore, for the demand of stone extraction and lithotripsy of super large common bile duct stones, a stone and lithotripsy device for stone surgery is needed to realize the integrated operation of stone capture, lithotripsy and stone extraction, and to improve the success rate of stone extraction. SUMMARY

[0005] In view of the above analysis, the present application aims to provide a stone and lithotripsy device for stone surgery to solve the problem that large stones are difficult to capture and extract during the existing stone extraction surgery.

[0006] The purpose of the present application is mainly realized by the following technical solutions: A kind of stone extraction and fragmentation device for stone operation, including: stone capture basket, outer fixed pipe, inner rotary rod, rotating disc and sliding rod;One end of the sliding rod is provided with spherical convex, the other end is fixedly connected with spoke end of the stone capture basket;The inner rotary rod is sleeved in the inside of the outer fixed pipe and both can rotate relatively;The rotating disc is arranged in the outside of the inner rotary rod and can be synchronized with the inner rotary rod rotation;Linear slide groove is opened on the end face of the outer fixed pipe, and arc-shaped guide groove is arranged on the end face opposite to the outer fixed pipe of the rotating disc;The sliding rod is slidably installed in the linear slide groove, and the spherical convex is slidably installed in the arc-shaped guide groove;When the inner rotary rod drives the rotating disc to rotate, the spherical convex is slid from one end to the other end of the arc-shaped guide groove, while pushing the sliding rod to slide out from the linear slide groove to realize the expansion or contraction of the stone capture basket;The inside of the inner rotary rod is provided with liquid-electricity lithotripsy channel extending along its own axis direction, and the liquid-electricity lithotripsy channel is used to pass into liquid-electricity lithotripsy probe to realize liquid-electricity lithotripsy on stone.

[0007] Further, one end of the inner rotary rod close to the stone capture basket is provided with a nose cone head;The nose cone head is used to limit the rotating disc;The end of the nose cone head extends into the inside of the stone capture basket, so that the liquid-electricity lithotripsy probe is away from the initial section of the stone capture basket, preventing the liquid-electricity lithotripsy probe from damaging the stone capture basket.

[0008] Further, the nose cone head includes a cylindrical tube, a nose cone tube and a cylindrical tube;The cylindrical tube is arranged at the small end of the nose cone tube, the cylindrical tube is arranged at the large end of the nose cone tube, and the cylindrical tube is fixedly connected with the inner rotary rod.

[0009] Further, the arc-shaped guide groove is equally spaced in multiple along the circumferential direction of the rotating disc;Correspondingly, the linear slide groove is equally spaced in multiple along the circumferential direction of the outer fixed pipe.

[0010] Further, the center of the rotating disc is provided with a rectangular hole, and the end of the inner rotary rod is provided with a rectangular positioning part, and the rectangular positioning part is sleeved in the inside of the rectangular hole.

[0011] Further, one end of the arc-shaped guide groove is close to the rectangular hole, and the other end is close to the edge of the rotating disc.

[0012] Further, the end of the inner rotary rod is provided with a limiting ring, and the limiting ring is used to limit the axial displacement of the outer fixed pipe relative to the inner rotary rod.

[0013] Further, the stone capture basket is composed of a plurality of basket spokes;The end of the basket spoke is provided with a vertical rod part;The vertical rod part is fixedly connected with the outside end of the sliding rod.

[0014] Further, the operating end of the outer fixed tube is provided with a holding handle; the holding handle comprises two symmetrical circular holding parts.

[0015] Further, the operating end of the inner rotating rod is provided with a rotating handle, which is a T-shaped structure.

[0016] The technical scheme of the present application can at least achieve one of the following effects: 1. The stone extraction and fragmentation device for stone surgery of the present application can position the sliding rod together with the outer fixed tube through the rotating disc; when the rotating disc rotates, the spherical protrusion at one end of the sliding rod moves along the arc-shaped guide groove, pushing the sliding rod to slide outwards in the linear sliding groove, thereby driving the spokes of the stone capturing basket to expand outwards to form a larger stone capturing space, facilitating the extraction of large-size stones. When the rotating disc rotates in the opposite direction, it can retract the sliding rod, thereby pulling the stone capturing basket to shrink, realizing the flexible expansion and contraction of the stone capturing basket, and thus achieving the smooth capture of large-size stones and the tightening of the basket after capture to realize the tightening of the stones. The contraction of the basket limits the displacement of the stones between the stone capturing basket and the nose cone head, improves the success rate of liquid-electric directional fragmentation, and provides a certain degree of tightening force in the tightened state of the stone capturing basket, realizing the effect of controllable mechanical stone capture and liquid-electric fragmentation.

[0017] 2. The stone extraction and fragmentation device for stone surgery of the present application, the liquid-electric fragmentation channel arranged inside the inner rotating rod along the axial direction, can pass through the liquid-electric fragmentation probe, integrating the liquid-electric fragmentation function; at the same time, the nose cone head is arranged to extend into the inside of the stone capturing basket, so that the extending end of the liquid-electric fragmentation probe can contact the stones for fragmentation, and the probe electrode is away from the stone capturing basket to avoid damaging the structure of the basket. After the stone capturing basket extracts the stones, it can directly perform fragmentation operation without replacing the instrument, greatly shortening the operation time and reducing the operation risk, especially suitable for handling large common bile duct stones with a diameter greater than 1.5 cm, effectively solving the problem of large stones being difficult to capture and extract.

[0018] 3. The stone extraction and fragmentation device for stone surgery of the present application, by arranging multiple arc-shaped guide grooves and linear sliding grooves distributed equidistantly in the circumferential direction, the sliding rod can drive multiple sliding rods to extend or retract simultaneously along the radial direction of the outer fixed tube when the rotating disc rotates, ensuring the stability and reliability of the expansion and contraction of the stone capturing basket. Furthermore, the rectangular hole in the center of the rotating disc and the rectangular positioning part at the end of the inner rotating rod are mutually matched and sleeved, realizing the synchronous rotation of the two while enhancing the stability of the structure, preventing deviation or shaking during rotation, and improving the precision of operation.

[0019] 4. The stone extraction and fragmentation device for stone surgery of the present application, a limiting ring is arranged at the end of the inner rotating rod, effectively limiting the axial displacement of the outer fixed tube relative to the inner rotating rod, so that the nose cone head, the rotating disc, the outer fixed tube and the limiting ring are pressed tightly in the axial direction in turn, and the end faces where the arc-shaped guide groove and the linear sliding groove are located are in close contact with each other, so that the sliding rod can be stably extended or retracted from the linear sliding groove, ensuring the reliability of instrument operation during the operation process and enhancing the safety of the operation.

[0020] 5. The stone extraction and fragmentation device for stone surgery of the present application belongs to the stone extraction basket instrument in the field of ERCP, by arranging the electrohydraulic lithotripsy channel in the inner rotating rod, introducing the coaxially arranged electrohydraulic lithotripsy (EHL) probe, under the guidance of the endoscope lens and X-ray perspective, the integrated operation of "large stone basket capture - stone tightening positioning - directional fragmentation - stone extraction" can be realized, and the combination of basket tightening fragmentation (mechanical fragmentation) and electrohydraulic lithotripsy can be realized during the fragmentation process, solving the problems of basket jamming, low fragmentation efficiency, poor positioning and fixing in the conventional stone extraction process of large and hard common bile duct stones.

[0021] In the present application, the above technical solutions can be combined with each other to realize more preferred combination schemes. Other features and advantages of the present application will be described in the subsequent specification, and some advantages will become apparent from the specification or be understood by implementing the present application. The purposes and other advantages of the present application can be realized and obtained from the contents specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the embodiments, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain the principles of the application, and should not be considered limiting of the present application in scope, as numerous embodiments can be made and equivalents can be substituted for specific embodiments without departing from the scope of the present application. Figure 1 The stone extraction and fragmentation device for stone surgery of the present application; Figure 2 The stone extraction and fragmentation device for stone surgery of the present application; Figure 3 The stone extraction and fragmentation device for stone surgery of the present application; Figure 4 The stone extraction and fragmentation device for stone surgery of the present application; Figure 5 The stone extraction and fragmentation device for stone surgery of the present application; Figure 6 The stone extraction and fragmentation device for stone surgery of the present application; Figure 7Structure diagram of nose cone end of inner rotating rod of stone extraction and crushing device for stone surgery of the present application; Figure 8 Structure diagram of sliding rod of stone extraction and crushing device for stone surgery of the present application; Figure 9 Cooperation state diagram of sliding rod and rotating disc of stone extraction and crushing device for stone surgery of the present application; Figure 10 Cooperation state diagram of sliding rod and outer fixed tube of stone extraction and crushing device for stone surgery of the present application; Figure 11 Cooperation state diagram between sliding rod, outer fixed tube and inner rotating rod of stone extraction and crushing device for stone surgery of the present application (1); Figure 12 Cooperation state diagram between sliding rod, outer fixed tube and inner rotating rod of stone extraction and crushing device for stone surgery of the present application (2); Figure 13 Cooperation state diagram between moving disc and nose cone head of stone extraction and crushing device for stone surgery of the present application.

[0023] Reference signs: 1 - stone catching basket; 2 - outer fixed tube; 3 - inner rotating rod; 4 - holding handle; 5 - rotating handle; 6 - rotating disc; 7 - nose cone head; 8 - moving disc; 9 - pull string; 10 - sliding rod; 11 - spherical protrusion; 101 - vertical rod part; 201 - central through hole; 202 - linear sliding groove; 301 - rectangular positioning part; 302 - limiting ring; 303 - electrohydraulic lithotripsy channel; 601 - rectangular hole; 602 - arc-shaped guide groove; 701 - cylindrical thin tube; 702 - nose cone tube; 703 - cylindrical tube; 704 - positioning bead; 801 - helical groove. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, which form a part of this application. The accompanying drawings and the description thereof are included to explain the principles of the present application and to enable a person skilled in the art to make and use the application. The present application is not limited to the embodiments disclosed.

[0025] Example 1 One specific embodiment of the present application discloses a stone extraction and crushing device for stone surgery, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, it comprises: a stone catching basket 1, an outer fixed tube 2, an inner rotating rod 3, a rotating disc 6 and a sliding rod 10; the stone catching basket 1 is composed of a plurality of basket spokes; one end of the sliding rod 10 is provided with a spherical protrusion 11, and the other end is fixedly connected with the spoke end of the stone catching basket 1; the inner rotating rod 3 is sleeved in the inner part of the outer fixed tube 2 and can rotate relative to the outer fixed tube 2; the rotating disc 6 is arranged outside the inner rotating rod 3 and can synchronously rotate with the inner rotating rod 3; a linear sliding groove 202 is formed on the end face of the outer fixed tube 2, and an arc-shaped guide groove 602 is arranged on the end face opposite to the outer fixed tube 2 of the rotating disc 6; the sliding rod 10 is slidingly installed in the linear sliding groove 202, and the spherical protrusion 11 is slidingly installed in the arc-shaped guide groove 602; when the inner rotating rod 3 drives the rotating disc 6 to rotate, the spherical protrusion 11 slides from one end to the other end of the arc-shaped guide groove 602, and at the same time, the sliding rod 10 is pushed out of the linear sliding groove 202 to realize the expansion of the stone catching basket 1; the inner part of the inner rotating rod 3 is provided with a hydro-electric lithotripsy channel 303 extending along the axis direction thereof, and the hydro-electric lithotripsy channel 303 is used for inserting a hydro-electric lithotripsy probe to realize hydro-electric lithotripsy on the stone.

[0026] Specifically, the inner rotating rod 3 is sleeved and installed in the center through hole 201 of the outer fixed tube 2; the center through hole 201 is a cylindrical hole, so that the inner rotating rod 3 can rotate relative to the outer fixed tube 2.

[0027] In the embodiment, the stone catching basket 1 is made of nickel-titanium alloy (shape memory alloy) and has the characteristics of restoring the preformed shape at a specific temperature and being easy to stretch and deform; when the stone removing and crushing device is pushed to the target position through the endoscopic channel, the stone catching basket 1 gradually restores the preset expansion mode at the patient's body temperature environment, so that the stone is easily caught. For the stones with larger diameter or harder texture, the present application can directly crush the stone through the hydro-electric lithotripsy probe after the stone is caught by the basket, so that the overexpansion of the sphincter or the surgical operation is avoided, the success rate of ERCP treatment is significantly improved, and the trauma and hospitalization time of the patient are reduced.

[0028] The outer diameter of the outer fixed tube 2 of the present application is controlled to be 4mm, which can smoothly pass through the 4.2mm working channel of the main flow duodenoscope, and the hydro-electric lithotripsy channel is set to be 0.9mm, which can be compatible with the common 0.88mm hydro-electric lithotripsy probe, so that the present application can be applied without replacing the existing ERCP system, and has good clinical popularization.

[0029] As Figure 2 , Figure 4 , Figure 6As shown, the inner rotating rod 3 is provided with a nose cone head 7 near one end of the stone catching basket 1; the nose cone head 7 is used for limiting the rotating disc 6; the end of the nose cone head 7 extends into the interior of the stone catching basket 1, so that the liquid-electric stone breaking probe is away from the starting section of the stone catching basket 1, and the liquid-electric stone breaking probe is prevented from damaging the stone catching basket 1. The nose cone head 7 is made of high-strength temperature-resistant insulating material (such as PEEK or ceramic), the nose cone head extends forward by about 2-3 mm and is provided with a central guide hole, which is used for positioning the electrode outlet of the liquid-electric stone breaking probe and fixing the stone block, and at the same time, the electrode is away from the starting section of the stone catching basket 1, so that the spoke of the basket keeps a certain distance from the electrode, and the basket is protected from being damaged by the liquid-electric stone breaking.

[0030] Further, as shown in the drawings, Figure 7 The nose cone head 7 comprises a cylindrical thin tube 701, a nose cone tube 702 and a cylindrical tube 703; the cylindrical thin tube 701 is arranged at the small end of the nose cone tube 702, the cylindrical tube 703 is arranged at the large end of the nose cone tube 702, and the cylindrical tube 703 is fixedly connected with the inner rotating rod 3. The nose cone tube 702 has a diameter gradient structure, the outer diameter of the cylindrical thin tube 701 is equal to the outer diameter of the small end of the nose cone tube 702, and the outer diameter of the cylindrical tube 703 is equal to the outer diameter of the large end of the nose cone tube 702; the internal through holes of the cylindrical thin tube 701, the nose cone tube 702 and the cylindrical tube 703 are in communication with the liquid-electric stone breaking channel 303, so as to ensure that the liquid-electric stone breaking probe passes through smoothly. The traditional liquid-electric stone breaking under the cholangioscope often has a large difficulty in the stone breaking operation due to the unstable position of the stone and the difficulty in aligning the electrode. The present application fixes the position of the stone by means of the stone catching basket 1, and keeps the coaxial positioning of the electrode by means of the central guide hole of the nose cone head 7, so that the liquid-electric stone breaking energy is concentrated on the stone, and the stone breaking efficiency is significantly improved.

[0031] Specifically, the cylindrical tube 703 is fixedly arranged at the end of the rectangular positioning part 301, can axially limit the rotating disc 6, guarantees the mutual pressing effect between the rotating disc 6 and the outer positioning tube 2, and further guarantees the stability of the sliding rod 10 in the movement process in the linear sliding groove 202. The extension section of the cylindrical thin tube 701 extends into the interior of the stone catching basket 1, forms a front guide structure, realizes that the liquid-electric stone breaking probe is located at the middle part of the stone catching basket 1 when the liquid-electric stone breaking probe extends out, avoids the damage caused by the contact between the liquid-electric stone breaking and the basket, and improves the accuracy and safety of the stone breaking operation.

[0032] In one specific embodiment of the present application, as shown in the drawings, Figure 9 One end of the arc-shaped guide groove 602 is close to the rectangular hole 601, and the other end is close to the edge of the rotating disc 6.

[0033] Further, as shown in the drawings, Figure 5 , Figure 9 , Figure 10 , Figure 11 , Figure 12As shown, the arc-shaped guide grooves 602 are arranged at equal intervals along the circumferential direction of the rotating disc 6; correspondingly, the linear sliding grooves 202 are arranged at equal intervals along the circumferential direction of the outer fixed tube 2.

[0034] Specifically, as shown in Figure 8 、 Figure 11 、 Figure 12 The spherical protrusion 11 is arranged on the side surface of the sliding rod 10; preferably, the spherical protrusion 11 is hemispherical.

[0035] Further, as shown in Figure 11 、 Figure 12 The one side end surface of the rotating disc 6, on which the arc-shaped guide groove 602 is arranged, is in contact with the one side end surface of the outer fixed tube 2, on which the linear sliding groove 202 is arranged; the spherical protrusion 11 is embedded in the arc-shaped guide groove 602 and can slide along the arc-shaped guide groove 602; the sliding rod 10 is embedded in the linear sliding groove 202 and can slide linearly along the linear sliding groove 202; therefore, when the rotating disc 6 rotates under the driving of external force, the arc-shaped guide groove 602 drives the spherical protrusion 11 to move from the center of the rotating disc 6 to the edge of the rotating disc 6 (or from the edge to the center), thereby pushing the sliding rod 10 to move along the linear sliding groove 202, realizing the radial movement of the sliding rod 10 relative to the outer fixed tube 2, and further driving the stone catching basket 1 to realize the opening and closing action.

[0036] In one specific embodiment of the present application, the center of the rotating disc 6 is provided with a rectangular hole 601, and the end of the inner rotating rod 3 is provided with a rectangular positioning part 301, which is sleeved in the rectangular hole 601; the inner rotating rod 3 is circumferentially limited by the rectangular positioning part 301 and the rectangular hole 601 of the rotating disc 6, effectively transmitting torque to make the rotating disc 6 rotate synchronously with the inner rotating rod 3.

[0037] Further, the end of the inner rotating rod 3 is provided with a limiting ring 302, which is used to limit the axial displacement of the outer fixed tube 2 relative to the inner rotating rod 3; the limiting ring 302 is in contact with the outer side end of the outer fixed tube 2, preventing the axial displacement of the outer fixed tube 2 during operation, ensuring the relative position stability of the outer fixed tube 2, the rotating disc 6 and the nose cone head 7, and thus guaranteeing the structural reliability and movement accuracy during equipment operation.

[0038] In the present embodiment, as shown in Figure 10As shown, the end of the basket spoke is provided with a vertical rod part 101; the vertical rod part 101 is fixedly connected with the outer side end of the sliding rod 10. Further, a plurality of inner recessed axial grooves are arranged on the side of the rotating disc 6, when the sliding rod 10 is completely retracted into the inside of the outer fixed tube 2, the axial grooves are aligned with the vertical rod part 101 of the outer side end of the sliding rod 10, and the vertical rod part 101 can be clamped into the axial grooves on the outer side surface of the rotating disc 6 and integrated with the rotating disc 6, in the process of withdrawing the stone removing device from the inside of the endoscope or during the removal of the stone, the vertical rod part 101 is prevented from protruding from the rotating disc 6 to cause the increase of the overall diameter of the device, thereby ensuring the smooth operation of the stone removal.

[0039] Further, in one specific embodiment of the present application, compared with the existing products, the stone removing device of the present application can be directly used in cooperation with the endoscope (cholecystoscope / duodenoscope / gastroscope), the basket is stretched into the channel of the endoscope in the low-temperature contraction state, and is expanded to present a standard shape after being heated by the human body temperature, and the basket and the overall structure of the device can be guided through the channel of the endoscope. Alternatively, an outer sheath shell capable of sliding relative to the axis of the outer fixed tube 2 is sleeved on the outside of the outer fixed tube 2, the shape of the basket is constrained by the outer sheath shell, and the basket is conveniently placed in the patient's body.

[0040] Further, as shown in the drawings, Figure 3 As shown, the operating end of the outer fixed tube 2 is provided with a holding handle 4; the holding handle 4 comprises two symmetrically arranged circular holding parts.

[0041] Further, as shown in the drawings, Figure 3 As shown, the operating end of the inner rotating rod 3 is provided with a rotating handle 5, and the rotating handle 5 is a T-shaped structure.

[0042] Further, in order to realize more convenient operation, the transverse section of the rotating handle is perpendicular to the axis of the inner rotating rod, as shown in the drawings, Figure 3 , Figure 6 During the operation, the doctor can control the rotation of the inner rotating rod 3 through the rotating handle 5, thereby driving the rotation of the rotating disc 6, the arc-shaped guide groove 602 on the rotating disc 6 cooperates with the linear sliding groove 202 on the outer fixed tube 2, so that the sliding rod 10 and the spherical protrusion 11 smoothly slide between them, the radial extension or retraction of the sliding rod 10 is realized, and the expansion or contraction of the stone catching basket 1 is realized.

[0043] A further improved design of the present application is that: in order to realize the precise opening and closing control of the stone catching basket 1, a moving disc 8 is sleeved and installed on the nose cone head 7, a plurality of pull strings 9 are arranged on the moving disc 8, and the ends of the pull strings 9 are fixedly connected with the basket spokes; as shown in the drawings, Figure 2 , Figure 4 , Figure 13

[0044] ​Specifically, the pull string 9 is in an arc structure; and the connection position of the pull string 9 and the basket spoke is lower than the center of the basket spoke, as shown in the figure. Figure 13

[0045] Specifically, the moving disc 8 is in sliding fit with the nose cone head 7, and the inside of the moving disc 8 is provided with a spiral groove 801, and the outside of the nose cone head 7 is provided with a positioning bead 704 matched with the spiral groove 801; when the inner rotating rod 3 drives the nose cone head 7 to rotate, the moving disc 8 is displaced up and down along the axis direction of the nose cone head 7 under the guidance of the positioning bead 704 and the spiral groove 801, and then the moving disc 8 drives the basket spoke to move synchronously through the pull string 9, and the basket spoke is matched with the extension and retraction synchronous action of the sliding rod 10 to realize the accurate expansion and contraction of the stone catching basket 1, and to ensure the effective capture and tightening of the stone.

[0046] In the implementation, an operator (doctor) holds the holding handle 4 with one hand, and can operate the rotating handle 5 to rotate to realize the rotation of the inner rotating rod 3: When the inner rotating rod 3 rotates forward (counterclockwise), the spherical protrusion 11 is displaced along the arc-shaped guide groove 602 to the edge of the rotating disc 6, the sliding rod 10 is extended from the inside of the outer fixed tube 2, the sliding rod 10 drives the basket spoke to expand outward, at the same time, the positioning bead 704 slides along the spiral groove 801 to push the moving disc to displace upward along the nose cone head 7, the pull string 9 pushes the basket spoke outward, and the stone catching basket 1 is gradually expanded to the maximum working state.

[0047] When the inner rotating rod 3 reversely rotates (clockwise), the spherical protrusion 11 is displaced along the arc-shaped guide groove 602 to the center of the rotating disc 6, drives the sliding rod 10 to retract into the inside of the outer fixed tube 2, and the basket spoke is gathered to the center; at the same time, the positioning bead 704 reversely slides along the spiral groove 801 to drive the moving disc 8 to displace downward along the axis direction of the nose cone head 7, the pull string 9 pulls the basket spoke to contract to the center, the stone catching basket 1 is gradually closed, the stone is firmly bound to the center position of the stone catching basket 1 and contacts the end of the nose cone head 7, and the liquid-electric stone crushing probe is convenient to extend from the end of the nose cone head 7 to perform liquid-electric stone crushing.

[0048] The whole operation process can be completed only by controlling the bidirectional rotation of the rotating handle 5, the structure linkage is close, and the action synchronization is strong, which significantly improves the control precision and operation convenience of the opening and closing of the basket during the operation, and further improves the stone catching success rate and stone crushing efficiency of the basket on the super large stone.

[0049] It is worth noting that: the stone crushing device for stone surgery of the application can not only be used for the stone crushing of gallstones, but also can be applied to the treatment of gastric stones or duodenal stones in cooperation with a gastroscope or a duodenoscope, and has a wide application range; the specific application of the application is not limited to the protection range of the application.

[0050] ​The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A stone-removing and lithotripsy device for stone surgery, characterized in that, include: Stone-catching basket (1), outer fixed tube (2), inner rotating rod (3), rotating disk (6) and sliding rod (10); One end of the sliding rod (10) is provided with a spherical protrusion (11), and the other end is fixedly connected to the end of the stone-catching basket (1); The inner rotating rod (3) is sleeved inside the outer fixed tube (2) and the two can rotate relative to each other; The rotating disk (6) is located outside the inner rotating rod (3) and can rotate synchronously with the inner rotating rod (3); A linear groove (202) is provided on the end face of the outer fixed tube (2), and an arc-shaped guide groove (602) is provided on the end face of the rotating disk (6) opposite to the outer fixed tube (2); the sliding rod (10) is slidably installed in the linear groove (202), and the spherical protrusion (11) is slidably installed in the arc-shaped guide groove (602); When the inner rotating rod (3) drives the rotating disk (6) to rotate, the spherical protrusion (11) slides from one end of the arc-shaped guide groove (602) to the other end, and at the same time pushes the sliding rod (10) to slide out of the linear sliding groove (202) to realize the expansion or contraction of the stone-catching basket (1).

2. The lithotripsy device for stone removal surgery according to claim 1, characterized in that, The inner rotating rod (3) is provided with a liquid-electric lithotripsy channel (303) extending along its own axis. The liquid-electric lithotripsy channel (303) is used to pass a liquid-electric lithotripsy probe to realize liquid-electric lithotripsy of stones.

3. The lithotripsy device for stone removal surgery according to claim 2, characterized in that, The inner rotating rod (3) is provided with a nose cone (7) at one end near the stone-catching basket (1); the nose cone (7) is used to limit the rotation disk (6); the end of the nose cone (7) extends into the interior of the stone-catching basket (1) so that the electrohydraulic lithotripsy probe is away from the starting section of the stone-catching basket (1) to prevent the electrohydraulic lithotripsy probe from damaging the stone-catching basket (1).

4. The lithotripsy device for stone removal surgery according to any one of claims 1-3, characterized in that, The arc-shaped guide groove (602) is provided with multiple grooves at equal intervals along the circumference of the rotating disk (6); correspondingly, the linear slide groove (202) is provided with multiple grooves at equal intervals along the circumference of the outer fixed tube (2).

5. The lithotripsy device for stone removal surgery according to any one of claims 1-3, characterized in that, The rotating disk (6) has a rectangular hole (601) at its center, and the end of the inner rotating rod (3) has a rectangular positioning part (301) which is fitted inside the rectangular hole (601).

6. The lithotripsy device for stone removal surgery according to claim 5, characterized in that, One end of the arc-shaped guide groove (602) is close to the rectangular hole (601), and the other end is close to the edge of the rotating disk (6).

7. The lithotripsy device for stone removal surgery according to claim 6, characterized in that, The end of the inner rotating rod (3) is provided with a limiting ring (302), which is used to limit the axial displacement of the outer fixed tube (2) relative to the inner rotating rod (3).

8. The lithotripsy device for stone removal surgery according to claim 1, characterized in that, The stone-catching basket (1) is composed of multiple basket spokes; the ends of the basket spokes are provided with vertical rods (101); the vertical rods (101) are fixedly connected to the outer end of the sliding rod (10).

9. The lithotripsy device for stone removal surgery according to claim 1, characterized in that, The operating end of the outer tube (2) is provided with a grip handle (4); the grip handle (4) includes two symmetrically arranged annular grip parts.

10. The lithotripsy device for stone removal surgery according to claim 1, characterized in that, The operating end of the inner rotating rod (3) is provided with a rotating handle (5), which is a T-shaped structure.

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