Calculus taking-out device for hepatobiliary surgery

Abstract

The invention relates to the field of medical instruments, in particular to a calculus taking-out device for hepatobiliary surgery. The technical problem in the prior art is that an existing calculus taking-out device has the defect that calculus is easy to fall off from a cavity tube of an endoscope. A calculus taking-out device for hepatobiliary surgery comprises a cavity tube and the like. The two ends of the cavity tube are divided into a head end and a tail end, a plurality of limiting supports are fixedly connected to the cavity tube, an extension tube is slidably connected among the limiting supports, a plurality of chutes are formed in the extension tube, a limiting mechanism is arranged on the cavity tube, and the limiting mechanism is used for limiting the extension tube. The grooving supporting rod rotates to push the perforating rods to penetrate into the calculus, the perforating rods penetrate into the calculus, and therefore the calculus is further limited, the calculus is more stably adsorbed, and the calculus is not prone to falling off when a doctor takes out the calculus subsequently.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a stone removal device for hepatobiliary surgery. Background Art

[0002] A solid mass formed in the duct cavity or cavity organ cavity (such as kidney, ureter, gallbladder or bladder) in the human or animal body. It is mainly found in the gallbladder, bladder, and renal pelvis. It can also be seen in the cavity of the pancreatic duct and salivary duct. The stone is composed of inorganic salts or organic matter. The stone generally has a core composed of desquamated epithelial cells, bacterial clumps, parasite eggs or worm bodies, fecal masses or foreign matter.

[0003] The treatment for bile duct stones is generally surgical, usually by making an incision in the human abdominal cavity and then using an endoscope to remove the stones in the bile duct. During this process, the stones often collide with the inside of the liver and gallbladder during the process of removing the stones through the lumen of the endoscope, causing the stones to fall off the lumen of the endoscope. The doctor needs to operate the endoscope multiple times to completely remove the stones, which increases the doctor's operation time and difficulty. Summary of the invention

[0004] In order to overcome the shortcoming of the existing stone removal device that stones are easily dropped out of the lumen of the endoscope, the technical problem of the present invention is to provide a stone removal device for hepatobiliary surgery that can more stably remove stones from the liver and gallbladder.

[0005] The technical solution is: a stone removal device for hepatobiliary surgery, including a lumen, the two ends of the lumen are divided into a head end and a tail end, a plurality of limit brackets are fixedly connected to the lumen, an extension tube is slidably connected between the plurality of limit brackets, a plurality of inclined grooves are opened on the extension tube, a limit mechanism is provided on the lumen, the limit mechanism is used to limit the extension tube, and a suction mechanism is provided on the lumen, the suction mechanism is used to suck stones in the liver and gallbladder.

[0006] The cam is connected with the push rod of the linkage set, and the cam is connected with the push rod of the linkage set at the bottom of the cam, and the cam is connected with the push rod at the bottom of the cam, and the cam is connected with the push rod at the bottom of the cam.

[0007] Furthermore, the suction mechanism includes an annular tube, an annular tube is fixedly connected to the inner side of the head end of the cavity tube, the annular tube is a hollow structure, two exhaust pipes are fixedly connected to the annular tube, the annular tube is communicated with the two exhaust pipes, the other ends of the two exhaust pipes are fixedly connected to the tail end of the cavity tube, the exhaust pipe is communicated with the tail end of the cavity tube, a plurality of extension cavity seats are fixedly connected to the annular tube, the extension cavity seat is communicated with the annular tube, the end of the extension cavity seat away from the annular tube is fixedly connected to the head end of the cavity tube, the head end of the cavity tube is communicated with the extension cavity seat, each of the extension cavity seats is slidably connected with a blocking support rod, a fixed cam disk is fixedly connected to the rotating ring, the end of the blocking support rod away from the extension cavity seat is in contact with the fixed cam disk, and an extrusion spring is fixedly connected between the extension cavity seat and the blocking support rod.

[0008] Furthermore, it also includes a perforation mechanism, which is arranged at the head end of the cavity tube, and is used to limit the stone. A plurality of fixed support plates are fixedly connected to the inner side of the head end of the cavity tube, and a plurality of the fixed support plates are rotatably connected to slotted support rods, and each of the slotted support rods has transverse grooves at both ends. A plurality of through holes are opened at the head end of the cavity tube, and the through holes opened at the head end of the cavity tube are slidably connected to perforation rods, and the perforation rods are slidably connected to the transverse grooves at one end of the slotted support rods, and a fixed curved tube is fixedly connected to the blocking support rod, and the fixed curved tube is slidably connected to the transverse grooves at the other end of the slotted support rods.

[0009] Furthermore, it also includes an expansion mechanism, which is arranged on the extension tube and is used to intercept stones. A recessed ring is opened at one end of the extension tube, and an inflatable bag is fixedly connected to the recessed ring of the extension tube. A plurality of shaping limit rods are fixedly connected inside the recessed ring of the extension tube. An inflatable branch tube is fixedly connected inside the extension tube, and the inflatable branch tube is connected to the inflatable bag. One end of the inflatable branch tube away from the inflatable bag is fixedly connected to the tail end of the cavity tube, and the inflatable branch tube is connected to the tail end of the cavity tube.

[0010] Furthermore, the shaping limit rod is made of soft plastic material and has deformation capability.

[0011] Furthermore, the surface of the inflatable bag is coated with a smooth layer.

[0012] Beneficial effects: 1. The doctor will first insert the cavity tube into the liver and gallbladder of the body through a small incision in the body, transmit the real-time image to the display screen through the endoscope, and then use the air pump to inflate the inflatable cavity from the tail end of the cavity tube. The air filled into the inflatable cavity will push the arc-shaped push rod to move, and the movement of the arc-shaped push rod drives the rotating ring and the fixed round rod to rotate. The fixed round rod rotates along the slide groove of the swing rod to push the swing rod to rotate. The swing rod rotates and disengages from the extension tube, and the swing rod no longer jams the extension tube. Then the doctor pushes and rotates the extension tube, and the extension tube moves forward to evacuate the blocked stones, so as to facilitate better absorption of the stones later. Then continue to use the air pump to inflate the inflatable cavity, and the rotating ring continues to rotate to drive the fixed cam disk to rotate. The fixed cam disk rotates to squeeze the blocked support rod to move, and the blocked support rod no longer blocks the extension cavity seat. The doctor uses suction to absorb the stones close to the head end of the cavity tube through the suction tube, the annular tube and the extension cavity seat, so that the doctor can better remove the stones later.

[0013] 2. When the stone is adsorbed, the fixed cam plate pushes several blocking rods to move, and the blocking rod drives the fixed curved tube to move together. The fixed curved tube moves along the transverse groove at one end of the slotted rod to drive the slotted rod to rotate. Under the guidance of the through hole at the head end of the cavity tube and the transverse groove at the other end of the slotted rod, the slotted rod rotates to push the perforating rod toward the stone. Several perforating rods penetrate the stone, thereby further limiting the stone, so that the stone is adsorbed more firmly, and the stone is not easy to fall when the doctor takes it out later.

[0014] 3. After using the extension tube to evacuate the stones, the doctor continues to push the extension tube forward to pass through the stones, and then inflates the inflation branch tube. The air on the inflation branch tube extends to the inflation bag, and the inflation bag expands to squeeze the shaping limit rod to deform. Then, the inflation of the inflation branch tube is stopped. The inflation of the inflation bag intercepts the stones between the inflation bag and the head end of the cavity tube, thereby avoiding the omission of stones that are not adsorbed when the cavity tube and the extension tube are pulled out together, and the stones can be removed from the patient's liver and gallbladder more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a first partial three-dimensional structure of the present invention.

[0016] Figure 2 It is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0018] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the limiting mechanism of the present invention.

[0019] Figure 5 It is a schematic cross-sectional three-dimensional structure diagram of the extension cavity seat, the blocking support rod and the extrusion spring of the present invention.

[0020] Figure 6 It is a schematic diagram of a first partial three-dimensional structure of the suction mechanism and the punching mechanism of the present invention.

[0021] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the inflation cavity and the arc-shaped push rod of the present invention.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the second part of the suction mechanism and the perforation mechanism of the present invention.

[0023] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0024] Fig.10 It is a schematic diagram of the cross-sectional three-dimensional structure of the extension tube of the present invention.

[0025] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged three-dimensional structure of B in the figure.

[0026] The meanings of the reference numerals in the figure are: 1-lumen tube, 2-limiting bracket, 3-extension tube, 41-rotating ring, 42-torsion spring, 43-fixing bolt, 44-swinging rod, 45-fixed round rod, 46-inflatable cavity, 47-arc-shaped pushing rod, 51-annular tube, 52-exhaust tube, 53-extension cavity seat, 54-blocking support rod, 55-fixed cam disk, 56-extrusion spring, 61-fixed support plate, 62-slotted support rod, 63-perforated rod, 64-fixed curved tube, 71-inflatable bag, 72-shaping limiting rod, 73-inflatable branch tube. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1: A stone removal device for hepatobiliary surgery, such as Figure 1-Figure 8 As shown, it includes a lumen 1, the two ends of the lumen 1 are divided into a head end and a tail end, a plurality of limit brackets 2 are welded on the lumen 1, an extension tube 3 is slidably connected between the plurality of limit brackets 2, the extension tube 3 is used to evacuate blocked stones, a plurality of inclined grooves are opened on the extension tube 3, a limit mechanism is provided on the lumen 1, the limit mechanism is used to limit the extension tube 3, and a suction mechanism is provided on the lumen 1, the suction mechanism is used to absorb stones in the liver and gallbladder.

[0029] The limiting mechanism includes a rotating ring 41, an annular groove is opened on the inner side of the head end of the cavity tube 1, and the rotating ring 41 is rotatably connected to the annular groove on the head end of the cavity tube 1. A torsion spring 42 is rotatably connected between the cavity tube 1 and the rotating ring 41. Three fixing bolts 43 are welded on the inner side of the head end of the cavity tube 1. The three fixing bolts 43 are rotatably connected to a swing rod 44. A sliding groove is opened at one end of each swing rod 44. The swing rod 44 is used to limit the extension tube 3. The rotating ring 41 is fixedly connected with three fixing circular bolts. Rod 45, the fixed round rod 45 is slidably connected to the sliding groove at one end of the swing rod 44, and the other end of the swing rod 44 is stuck in the inclined groove on the extension tube 3, and an inflation cavity 46 is welded on the inner side of the head end of the cavity tube 1, and the interior of the inflation cavity 46 is a hollow structure, and the other end of the inflation cavity 46 is welded to the tail end of the cavity tube 1, and the inflation cavity 46 is connected to the tail end of the cavity tube 1, and one end of the inflation cavity 46 is slidably connected to an arc-shaped push rod 47, and one end of the arc-shaped push rod 47 is fixedly connected to the rotating ring 41.

[0030] The suction mechanism includes an annular tube 51, an annular tube 51 is welded to the inner side of the head end of the cavity tube 1, the annular tube 51 is a hollow structure, two exhaust pipes 52 are welded to the annular tube 51, the annular tube 51 is connected to the two exhaust pipes 52, the other ends of the two exhaust pipes 52 are fixedly connected to the tail end of the cavity tube 1, the exhaust pipe 52 is connected to the tail end of the cavity tube 1, and a plurality of extension cavity seats 53 are welded to the annular tube 51, and the extension cavity seats 53 are connected to the annular tube 51. The end of the extension cavity seat 53 away from the annular tube 51 is fixedly connected to the head end of the cavity tube 1, and the head end of the cavity tube 1 is communicated with the extension cavity seat 53. A blocking support rod 54 is slidably connected to each of the extension cavity seats 53. A fixed cam disk 55 is fixedly connected to the rotating ring 41. The end of the blocking support rod 54 away from the extension cavity seat 53 is in contact with the fixed cam disk 55. An extrusion spring 56 is fixedly connected between the extension cavity seat 53 and the blocking support rod 54.

[0031] At first, under the action of the torsion spring 42, the rotating ring 41 pushes the fixed round rod 45, and the fixed round rod 45 clamps the swing rod 44 into the inclined groove of the extension tube 3. Under the action of the extrusion spring 56, the contact between the support rod 54 and the fixed cam plate 55 is blocked, and the extension tube 3 is limited by the swing rod 44, so that the cavity 1 can drive the extension tube 3 to move when entering the human body. When it is necessary to remove the stones in the patient's liver and gallbladder, the doctor will first insert the cavity 1 into the liver and gallbladder of the body through a small incision in the body, transmit the real-time image to the display screen through the endoscope, and then the doctor manually pushes the cavity 1 to move to the stone. When the head end of the cavity 1 contacts the stone, the doctor uses an air pump to inflate the inflation cavity 46 from the tail end of the cavity 1. The air filled into the inflation cavity 46 will push the arc-shaped push rod 47 to move. The movement of the arc-shaped push rod 47 drives the rotating ring 41 and the fixed round rod 45 to rotate, the torsion spring 42 is compressed, and the fixed round rod 45 rotates along the swing The slide groove of the movable rod 44 pushes the swing rod 44 to rotate, and the swing rod 44 rotates and disengages from the extension tube 3, and the swing rod 44 no longer blocks the extension tube 3. The doctor then pushes and rotates the extension tube 3, and the extension tube 3 moves forward to evacuate the blocked stones, so as to facilitate the subsequent better adsorption of the stones. Then, the air pump continues to be used to inflate the inflation cavity 46, and the rotating ring 41 continues to rotate to drive the fixed cam plate 55 to rotate. The fixed cam plate 55 rotates and squeezes the blocking support rod 54 to move, and the blocking support rod 54 moves and no longer blocks the extension cavity seat 53. The doctor uses suction to absorb the stones close to the head end of the cavity tube 1 through the suction tube 52, the annular tube 51 and the extension cavity seat 53, so that the doctor can better remove the stones later. Then the doctor pulls the cavity tube 1, the extension tube 3 and the stones back together and withdraws from the small incision opened on the body. Finally, the doctor turns off the suction pump on the suction tube 52, and the extension cavity seat 53 no longer absorbs the stones, causing the stones to fall from the head end of the cavity tube 1.

[0032] Embodiment 2: Based on embodiment 1, Fig. 9 As shown, it also includes a perforation mechanism, which is arranged at the head end of the cavity tube 1, and is used to limit the stone. A plurality of fixed support plates 61 are welded to the inner side of the head end of the cavity tube 1, and a plurality of the fixed support plates 61 are rotatably connected to the slotted support rods 62, and each of the two ends of the slotted support rod 62 is provided with a transverse groove. The head end of the cavity tube 1 is provided with a plurality of through holes, and the through holes at the head end of the cavity tube 1 are slidably connected to the perforation rod 63, and the perforation rod 63 is slidably connected to the transverse groove at one end of the slotted support rod 62, and the perforation rod 63 is used to puncture and limit the stone. A fixed curved tube 64 is welded to the blocking support rod 54, and the fixed curved tube 64 is slidably connected to the transverse groove at the other end of the slotted support rod 62.

[0033] When the stone is adsorbed, the fixed cam plate 55 pushes several blocking support rods 54 to move, and the blocking support rod 54 drives the fixed curved tube 64 to move together. The fixed curved tube 64 moves along the transverse groove at one end of the slotted support rod 62 to drive the slotted support rod 62 to rotate. Under the guidance of the through hole at the head end of the cavity tube 1 and the transverse groove at the other end of the slotted support rod 62, the slotted support rod 62 rotates and drives the perforating rod 63 to penetrate toward the stone. Several perforating rods 63 penetrate the stone, thereby further limiting the stone, so that the stone is adsorbed more firmly, and then the stone is not easy to fall when the doctor takes it out later. After the stone is taken out, the fixed cam plate 55 is reset, and under the action of the extrusion spring 56, the blocking support rod 54 and the fixed curved tube 64 are reset together, and the fixed curved tube 64 is reset, driving the slotted support rod 62 and the perforating rod 63 to reset together.

[0034] Embodiment 3: Based on embodiment 2, Figure 10-11 As shown, it also includes an expansion mechanism, which is arranged on the extension tube 3 and is used to intercept stones. A recessed ring is opened at one end of the extension tube 3, and an inflatable bag 71 is fixedly connected to the recessed ring of the extension tube 3. The surface of the inflatable bag is coated with a smooth layer. The smooth layer on the surface of the inflatable bag 71 can reduce the friction between the inflatable bag 71 and the inner wall of the liver and gallbladder. A plurality of shaping limit rods 72 are fixedly connected in the recessed ring of the extension tube 3. The shaping limit rods 72 are made of soft plastic material and have deformation ability. An inflatable branch tube 73 is fixedly connected in the extension tube 3, and the inflatable branch tube 73 is connected to the inflatable bag 71. One end of the inflatable branch tube 73 away from the inflatable bag 71 is fixedly connected to the tail end of the cavity 1, and the inflatable branch tube 73 is used to inflate the inflatable bag 71. The inflatable branch tube 73 is connected to the tail end of the cavity 1.

[0035] After using the extension tube 3 to evacuate the stone, the doctor continues to push the extension tube 3 forward to pass through the stone. When the extension tube 3 passes through the stone and moves to a certain position, the doctor inflates the inflation branch tube 73. The air on the inflation branch tube 73 extends to the inflation bag 71. The inflation bag 71 expands and squeezes the shaping limit rod 72 to deform. Then, the inflation of the inflation branch tube 73 is stopped. The inflation bag 71 expands to intercept the stone between the inflation bag 71 and the head end of the cavity tube 1, thereby avoiding the omission of the unabsorbed stone when the cavity tube 1 and the extension tube 3 are pulled out together, thereby more stably removing the stone from the patient's liver and gallbladder. After the doctor pulls out the cavity tube 1 and the extension tube 3, the air in the inflation bag 71 is released and the deformed shaping limit rod 72 is bent back to a parallel shape, and then the extension tube 3 is pulled back. When the extension tube 3 retracts to a certain position, the swing rod 44 is re-stuck in the inclined groove of the extension tube 3.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stone removal device for hepatobiliary surgery, characterized in that: The invention comprises a lumen (1), wherein the two ends of the lumen (1) are divided into a head end and a tail end, the lumen (1) is fixedly connected to a plurality of limit brackets (2), an extension tube (3) is slidably connected between the plurality of limit brackets (2), the extension tube (3) is provided with a plurality of inclined grooves, the lumen (1) is provided with a limit mechanism, the limit mechanism is used to limit the extension tube (3), and the lumen (1) is provided with a suction mechanism, the suction mechanism is used to suction stones in the liver and gallbladder.

2. A stone removal device for hepatobiliary surgery according to claim 1, characterized in that: The limiting mechanism comprises a rotating ring (41), an annular groove is formed on the inner side of the head end of the cavity tube (1), the rotating ring (41) is rotatably connected to the annular groove on the head end of the cavity tube (1), a torsion spring (42) is rotatably connected between the cavity tube (1) and the rotating ring (41), three fixing bolts (43) are fixedly connected to the inner side of the head end of the cavity tube (1), the three fixing bolts (43) are rotatably connected to swing rods (44), one end of each swing rod (44) is formed with a sliding groove, and three fixed round rods (45) are fixedly connected to the rotating ring (41), the fixed round rods (45) are ) is slidably connected to the sliding groove at one end of the swing rod (44), and the other end of the swing rod (44) is stuck in the inclined groove on the extension tube (3). The inner side of the head end of the cavity tube (1) is fixedly connected to an inflation cavity (46), and the interior of the inflation cavity (46) is a hollow structure. The other end of the inflation cavity (46) is fixedly connected to the tail end of the cavity tube (1), and the inflation cavity (46) is communicated with the tail end of the cavity tube (1). One end of the inflation cavity (46) is slidably connected to an arc-shaped push rod (47), and one end of the arc-shaped push rod (47) is fixedly connected to the rotating ring (41).

3. The stone removal device for hepatobiliary surgery according to claim 2, characterized in that: The suction mechanism comprises an annular tube (51), the inner side of the head end of the cavity tube (1) is fixedly connected with the annular tube (51), the annular tube (51) is a hollow structure, two air extraction tubes (52) are fixedly connected to the annular tube (51), the annular tube (51) is communicated with the two air extraction tubes (52), the other ends of the two air extraction tubes (52) are fixedly connected to the tail end of the cavity tube (1), the air extraction tubes (52) are communicated with the tail end of the cavity tube (1), a plurality of extension cavity seats (53) are fixedly connected to the annular tube (51), the extension cavity seats (53) are communicated with the annular tube (51), and the extension cavity seats (53) are connected to the annular tube (51). One end of the extension cavity seat (53) away from the annular tube (51) is fixedly connected to the head end of the cavity tube (1), and the head end of the cavity tube (1) is communicated with the extension cavity seat (53). A blocking support rod (54) is slidably connected to each of the extension cavity seats (53). A fixed cam disk (55) is fixedly connected to the rotating ring (41). The rotating ring (41) has a plurality of protrusions. One end of the blocking support rod (54) away from the extension cavity seat (53) is in contact with the fixed cam disk (55). A compression spring (56) is fixedly connected between the extension cavity seat (53) and the blocking support rod (54).

4. The stone removal device for hepatobiliary surgery according to claim 3, characterized in that: The invention also comprises a perforating mechanism, which is arranged at the head end of the cavity tube (1) and is used for limiting the position of the stone. A plurality of fixed support plates (61) are fixedly connected to the inner side of the head end of the cavity tube (1), and a plurality of the fixed support plates (61) are rotatably connected to slotted support rods (62). Both ends of each slotted support rod (62) are provided with transverse grooves. A plurality of through holes are provided at the head end of the cavity tube (1), and a perforating rod (63) is slidably connected to the through holes provided at the head end of the cavity tube (1). The perforating rod (63) is slidably connected to the transverse groove at one end of the slotted support rod (62). A fixed curved tube (64) is fixedly connected to the blocking support rod (54), and the fixed curved tube (64) is slidably connected to the transverse groove at the other end of the slotted support rod (62).

5. The stone removal device for hepatobiliary surgery according to claim 4, characterized in that: The extension tube (3) further comprises an expansion mechanism, the expansion mechanism being arranged on the extension tube (3) and being used for intercepting stones. A recessed ring is provided at one end of the extension tube (3), an inflatable bag (71) is fixedly connected to the recessed ring of the extension tube (3), a plurality of shaping limit rods (72) are fixedly connected inside the recessed ring of the extension tube (3), an inflatable branch tube (73) is fixedly connected inside the extension tube (3), the inflatable branch tube (73) is communicated with the inflatable bag (71), one end of the inflatable branch tube (73) away from the inflatable bag (71) is fixedly connected to the tail end of the cavity tube (1), and the inflatable branch tube (73) is communicated with the tail end of the cavity tube (1).

6. A stone removal device for hepatobiliary surgery according to claim 5, characterized in that: The shaping limit rod (72) is made of soft plastic material and has deformation capability.

7. A stone removal device for hepatobiliary surgery according to claim 5, characterized in that: The surface of the inflatable bag (71) is coated with a smooth layer.

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