Calculus removing device

Abstract

The invention relates to the technical field of medical instruments, in particular to a calculus removing device which comprises a shell and further comprises a clamping assembly. The clamping assembly comprises a moving cylinder, a rotating component, a clamping plate, a piston, a driving component, a conveying pipe and an air bag, during use, a medical worker holds the driving component to drive the shell to move, the shell extends into the body of a patient, after the clamping plate moves to the position of a calculus, the medical worker drives the piston to move through the driving component, and the piston drives the moving cylinder to move; a moving cylinder drives four rotating components to rotate, then four corresponding clamping plates are driven to rotate, the clamping plates can clamp the stone, when the clamping plates abut against the stone, the clamping plates stop moving, then the moving cylinder stops moving, at the moment, a driving component continues to drive a piston to move, and the piston pushes air in the moving cylinder into a conveying pipe; and the air bag is inflated and expanded, so that the air bag wraps the outer side of the calculus, and the calculus is prevented from falling off.

Description

Technical Field

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

[0002] Gallstones are stones composed of bile compounds in the gallbladder. Currently, hepatobiliary surgery mainly uses lithotripsy to remove stones. The stone removal effect is poor, and the stones are easily dislodged during the clamping process.

[0003] The prior art CN112022280B discloses a clinical stone removal device for hepatobiliary surgery; it comprises a cylinder; a moving rod is provided inside the cylinder, one end of the moving rod passes through the cylinder and is slidably connected to the cylinder, and one end of the moving rod is connected to a pressure block; racks are provided on the circumferential side of the other end of the moving rod, and two gears are symmetrically provided on both sides of the rack, and the gears are meshed and connected with the racks; the outer walls of the two gears away from the moving rod are connected with clamping rods, the clamping rods extend to the outside of the cylinder and are rotatably connected to the cylinder through a set rotating shaft; the gears and the rotating shaft are rotatably connected to the cylinder; a clamping plate is provided at the other end of the clamping rod; a moving ring is provided on the outside of the cylinder, and the moving ring is provided with multiple stretching mechanisms; by setting the stretching mechanism, the stone removal operators are simplified, the operation steps are simplified, the use is convenient, the efficiency of stone removal is improved, and the stability is good.

[0004] The above device can open the wound to facilitate stone removal, and multiple protrusions are provided on the splint to prevent the stone from falling off. However, the shape of the stone is irregular, and the protrusions cannot fit the surface of the stone, resulting in uneven clamping force and increasing the risk of the stone falling off during the clamping process. Summary of the invention

[0005] The purpose of the present invention is to provide a stone removal device, which solves the problem of an existing hepatobiliary surgery clinical stone removal device in which the protrusions cannot fit the surface of the stone, resulting in uneven clamping force and increasing the risk of the stone falling off during the clamping process.

[0006] To achieve the above-mentioned purpose, the present invention provides a stone removal device, including a shell and a clamping assembly; the clamping assembly includes a moving cylinder, a rotating member, a clamping plate, a piston, a driving member, a conveying tube and an airbag, the moving cylinder is slidably installed inside the shell, the rotating member is arranged on the shell, the clamping plate is connected to the moving cylinder through the rotating member, the piston is slidably installed inside the moving cylinder, the airbag is connected to the clamping plate and is located on one side of the clamping plate, the two ends of the conveying tube are respectively connected to the moving cylinder and the airbag, the conveying tube is installed on the moving cylinder, the driving member is arranged on the shell, and drives the piston to move.

[0007] Wherein, the clamping assembly also includes a first return spring and a second return spring, the two ends of the first return spring are respectively connected to the outer shell and the movable cylinder, and the first return spring is located inside the outer shell; the two ends of the second return spring are respectively connected to the movable cylinder and the piston, and the second return spring is located inside the movable cylinder.

[0008] Wherein, the rotating component includes a rack, a gear and a swing arm, the rack is fixedly connected to the moving cylinder and is located on one side of the moving cylinder; the gear is rotatably connected to the outer shell, meshes with the rack, and is located inside the outer shell; the swing arm is fixedly connected to the gear and fixedly connected to the clamping plate.

[0009] Among them, the conveying pipe includes a connecting pipe and a telescopic bellows, the telescopic bellows is installed on one side of the moving cylinder and is connected to the moving cylinder; one end of the connecting pipe is connected to the telescopic bellows, and the other end of the connecting pipe passes through the clamping plate and is connected to the airbag, and the connecting pipe is installed on the airbag.

[0010] Wherein, the swing arm includes a side plate and a fixing part, the side plate is fixedly connected to the gear and the clamping plate, and is located on one side of the gear; the fixing part is fixedly connected to the side plate and the connecting pipe, and is sleeved on the connecting pipe.

[0011] Wherein, the driving component includes a piston rod, a push plate and a locking component, the piston rod is fixedly connected to the piston and is located on a side of the piston away from the second return spring; the push plate is fixedly connected to the piston rod and is slidably connected to the outer shell, and is located at an end of the piston rod away from the piston; the locking component is arranged on the push plate.

[0012] Wherein, the driving component further includes a fixing plate, which is fixedly connected to the shell and is located on one side of the shell.

[0013] The stone removal device of the present invention, when in use, the medical staff holds the driving component to drive the shell to move, and extends the shell into the patient's body. When the clamping plate moves to the stone position, the medical staff drives the piston to move through the driving component, and the piston drives the moving cylinder to move. The moving cylinder drives the four rotating components to rotate, and then drives the corresponding four clamping plates to rotate, so that the clamping plates can clamp the stone. When the clamping plates abut the stone, they stop moving, and then the moving cylinder stops moving. At this time, the driving component continues to drive the piston to move, so that the piston pushes the air inside the moving cylinder into the delivery tube, and delivers it to the airbag through the delivery tube, so that the airbag is inflated and then wrapped around the outside of the stone to prevent the stone from falling off. Finally, the shell and the stone are taken out to complete the removal of the stone. The airbag is used to fit the stone and wrap the stone, so as to ensure uniform clamping force and prevent the stone from falling off during the clamping and removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of the stone removal device according to the first embodiment of the present invention.

[0016] Figure 2 The first embodiment of the present invention Figure 1 Enlarged view of point A.

[0017] Figure 3 It is a schematic diagram of the installation structure of the moving cylinder of the first embodiment of the present invention.

[0018] Figure 4 The first embodiment of the present invention Figure 3 Enlarged view of point B.

[0019] Figure 5 It is a schematic diagram of the installation structure of the piston according to the first embodiment of the present invention.

[0020] Figure 6 It is a schematic diagram of the installation structure of the fixing plate of the second embodiment of the present invention.

[0021] Figure 7 The second embodiment of the present invention Figure 6 Enlarged view of point C.

[0022] In the figure: 101-housing, 102-clamping assembly, 103-moving cylinder, 104-rotating member, 105-clamping plate, 106-piston, 107-driving member, 108-delivery pipe, 109-airbag, 110-first return spring, 111-second return spring, 112-rack, 113-gear, 114-swing arm, 115-connecting pipe, 116-telescopic bellows, 117-side plate, 118-fixing member, 201-piston rod, 202-push plate, 203-locking member, 204-fixing plate, 205-locking member, 206-pull rod, 207-abutment plate, 208-locking spring, 209-locking groove. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0024] First embodiment:

[0025] See also Figures 1 to 5 ,in Figure 1 It is a schematic diagram of the overall structure of the stone removal device. Figure 2 yes Figure 1 A magnified image of Figure 3 This is a schematic diagram of the installation structure of the mobile cylinder. Figure 4 yes Figure 3 The enlarged view of point B, Figure 5 It is a schematic diagram of the piston installation structure.

[0026] The present invention provides a stone removal device, comprising a housing 101 and a clamping assembly 102, wherein the clamping assembly 102 comprises a moving cylinder 103, a rotating member 104, a clamping plate 105, a piston 106, a driving member 107, a delivery tube 108 and an air bag 109, wherein the clamping assembly 102 further comprises a first return spring 110 and a second return spring 111, the rotating member 104 comprises a rack 112, a gear 113 and a swing arm 114, the delivery tube 108 comprises a connecting tube 115 and a telescopic bellows 116, the swing arm 114 It includes a side plate 117 and a fixing member 118. The driving member 107 drives the piston 106 to move in the moving cylinder 103, so that the piston 106 pushes the air into the delivery tube 108 and the airbag 109, thereby inflating the airbag 109. At this time, the airbag 109 can be wrapped around the outside of the clamping plate 105 to prevent the stone from falling off during the clamping and removal process. It can be understood that the above-mentioned scheme can be used to prevent the stone from falling off during the clamping and removal process, and can also be used to drive the piston 106 to move.

[0027] According to this specific embodiment, a slide groove for the moving cylinder 103 to slide is disposed inside the housing 101 .

[0028] The moving cylinder 103 is slidably mounted inside the housing 101, the rotating member 104 is disposed on the housing 101, the clamping plate 105 is connected to the moving cylinder 103 via the rotating member 104, the piston 106 is slidably mounted inside the moving cylinder 103, the airbag 109 is connected to the clamping plate 105 and is located on one side of the clamping plate 105, the two ends of the delivery pipe 108 are respectively connected to the moving cylinder 103 and the airbag 109, and the delivery pipe 108 is connected to the moving cylinder 103 and the airbag 109. 08 is installed on the moving cylinder 103, the driving member 107 is arranged on the shell 101, and drives the piston 106 to move; the driving member 107 can drive the piston 106 to move, and the rotating member 104 can drive the clamping plate 105 to rotate, and the clamping plate 105, the airbag 109 and the rotating member 104 are each provided with four; when in use, the medical staff holds the driving member 107 to drive the shell 101 to move, and extends the shell 101 into the patient's body When the clamping plate 105 moves to the stone position, the medical staff drives the piston 106 to move through the driving member 107, and the piston 106 drives the moving cylinder 103 to move, and the moving cylinder 103 drives the four rotating members 104 to rotate, thereby driving the corresponding four clamping plates 105 to rotate, so that the clamping plates 105 can clamp the stone. When the clamping plate 105 abuts against the stone, it stops moving, thereby causing the moving cylinder 103 to stop moving. At this time, the driving member 10 7 Continue to drive the piston 106 to move, so that the piston 106 pushes the air inside the moving cylinder 103 into the delivery tube 108, and delivers it to the airbag 109 through the delivery tube 108, so that the airbag 109 is inflated and expanded, and then wrapped around the outside of the stone to prevent the stone from falling off, and finally take out the shell 101 and the stone to complete the removal of the stone. The airbag 109 is used to fit the stone and wrap the stone to ensure uniform clamping force and prevent the stone from falling off during the clamping and removal process.

[0029] Secondly, the two ends of the first return spring 110 are respectively connected to the outer shell 101 and the moving cylinder 103, and the first return spring 110 is located inside the outer shell 101; the two ends of the second return spring 111 are respectively connected to the moving cylinder 103 and the piston 106, and the second return spring 111 is located inside the moving cylinder 103; the stiffness coefficient of the second return spring 111 is greater than the stiffness coefficient of the first return spring 110, so that when the driving member 107 drives the piston 106 to move, the piston 106 first pushes the second return spring 111 and the moving cylinder 103 to move, so that the moving cylinder 103 moves first, and when the moving cylinder 103 stops moving, the piston 106 squeezes the second return spring 111 to move in the moving cylinder 103, so that the clamping plate 105 clamps the stone first, and then the airbag 109 expands to wrap the stone.

[0030] At the same time, the rack 112 is fixedly connected to the moving cylinder 103 and is located on one side of the moving cylinder 103; the gear 113 is rotatably connected to the outer shell 101 and meshes with the rack 112, and is located inside the outer shell 101; the swing arm 114 is fixedly connected to the gear 113 and fixedly connected to the clamping plate 105; the rack 112 is driven to move during the movement of the moving cylinder 103, and since the rack 112 is meshed with the gear 113, the gear 113 is driven to rotate during the movement of the rack 112, and the gear 113 drives the swing arm 114 and the clamping plate 105 to rotate, thereby achieving the purpose of driving the clamping plate 105 to rotate.

[0031] In addition, the telescopic bellows 116 is installed on one side of the moving cylinder 103 and is connected to the moving cylinder 103; one end of the connecting tube 115 is connected to the telescopic bellows 116, and the other end of the connecting tube 115 passes through the clamping plate 105 and is connected to the airbag 109, and the connecting tube 115 is installed on the airbag 109; the telescopic bellows 116 can be telescoped to avoid interfering with the movement and resetting of the moving cylinder 103, and the connecting tube 115 is a hose to avoid interfering with the rotation of the swing arm 114.

[0032] Finally, the side plate 117 is fixedly connected to the gear 113 and to the clamping plate 105, and is located on one side of the gear 113; the fixing member 118 is fixedly connected to the side plate 117 and to the connecting tube 115, and is sleeved on the connecting tube 115; two side plates 117 are provided and are located on both sides of the fixing member 118, a through hole is provided in the middle of the fixing member 118, and the connecting tube 115 passes through the through hole on the fixing member 118 and is connected to the airbag 109, and the connecting tube 115 is limited by the fixing member 118 to prevent the connecting tube 115 from swinging at will and affecting the clamping of the stone.

[0033] When using the stone removal device of this embodiment, the housing 101 is extended into the stone position, and then the piston 106 is driven to move by the driving member 107. The piston 106 first pushes the second return spring 111 to move, so that the second return spring 111 pushes the moving cylinder 103 to move and squeezes the first return spring 110. During the movement of the moving cylinder 103, the rack 112 is driven to move, so that the rack 112 drives the gear 113 to rotate, and then drives the swing arm 114 to rotate, so that the swing arm 114 drives the clamping plate 105 to rotate, so that the four clamping plates 105 can close to clamp the stone; when the clamping plate 105 abuts against the stone and stops rotating, the swing arm 114, the gear 113, the rack 112 and the moving cylinder 103 stop rotating. The movement stops, and the piston 106 is continued to be driven to move by the driving member 107. Since the moving cylinder 103 stops moving, the piston 106 moves in the moving cylinder 103 and squeezes the second return spring 111. During the movement of the piston 106 inside the moving cylinder 103, the air is pushed into the telescopic bellows 116 and the connecting tube 115, and then air is injected into the airbag 109, so that the airbag 109 expands and wraps around the outside of the stone, thereby preventing the stone from falling off during the clamping and removal process; after the stone is removed, the moving cylinder 103 can be reset under the action of the first return spring 110, and the piston 106 is reset under the action of the second return spring 111, which is convenient for the next use, thereby avoiding the problem of stone falling off during the stone clamping process.

[0034] Second embodiment:

[0035] Based on the first embodiment, please refer to Figure 6 and Figure 7 , Figure 6 is a schematic diagram of the installation structure of the fixing plate of the second embodiment, Figure 7 The second embodiment of the Figure 6As shown in the enlarged view at point C, the driving member 107 of this embodiment includes a piston rod 201, a push plate 202, a locking member 203 and a fixing plate 204, the locking member 203 includes a locking piece 205, a pull rod 206, an abutment plate 207 and a locking spring 208, and the housing 101 has a locking groove 209.

[0036] According to this specific embodiment, the piston rod 201 is fixedly connected to the piston 106 and is located on the side of the piston 106 away from the second return spring 111; the push plate 202 is fixedly connected to the piston rod 201 and is slidably connected to the housing 101, and is located at the end of the piston rod 201 away from the piston 106; the locking member 203 is arranged on the push plate 202.

[0037] The fixing plate 204 is fixedly connected to the housing 101 and is located on one side of the housing 101 .

[0038] During use, the medical staff pushes the push plate 202 to drive the piston rod 201 to move, and then the piston rod 201 drives the piston 106 to move, and the medical staff can apply force to the push plate 202 through the fixing plate 204 .

[0039] Secondly, the locking member 205 is slidably connected to the push plate 202 and is located on one side of the push plate 202; the pull rod 206 is fixedly connected to the locking member 205 and is located at the bottom of the locking member 205; the abutment plate 207 is fixedly connected to the pull rod 206 and is sleeved on the pull rod 206; the two ends of the locking spring 208 are respectively connected to the abutment plate 207 and the push plate 202, and the locking spring 208 is sleeved on the pull rod 206.

[0040] Meanwhile, the locking groove 209 is disposed on a side of the housing 101 close to the locking member 205 , and the locking groove 209 cooperates with the locking member 205 .

[0041] There are multiple locking grooves 209, which are evenly distributed inside the housing 101. The locking grooves 209 and the locking member 205 are provided with mutually matching inclined surfaces. When the push plate 202 moves, the locking member 205 is driven to move. The locking member 205 contracts under the action of the inclined surfaces on the locking grooves 209, so that the push plate 202 can move forward. When the push plate 202 stops being pushed, the abutment plate 207 is reset under the action of the locking spring 208, thereby driving the pull rod 206 and the locking member 205 to reset, so that the locking member 205 extends into the locking groove 209. At this time, the push plate 202 is locked to prevent the medical staff from letting go during the process of removing the stone, causing the stone to fall off; at the same time, after the stone is removed, the pull rod 206 is pulled downward to drive the locking member 205 to disengage from the locking groove 209, and the push plate 202 is unlocked, thereby facilitating the reset of the push plate 202.

[0042] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A stone removal device, comprising a housing, characterized in that: Also included is a clamping assembly; The clamping assembly includes a moving cylinder, a rotating member, a clamping plate, a piston, a driving member, a delivery tube and an airbag. The moving cylinder is slidably installed inside the outer shell, the rotating member is arranged on the outer shell, the clamping plate is connected to the moving cylinder through the rotating member, the piston is slidably installed inside the moving cylinder, the airbag is connected to the clamping plate and is located on one side of the clamping plate, the two ends of the delivery tube are respectively connected to the moving cylinder and the airbag, the delivery tube is installed on the moving cylinder, and the driving member is arranged on the outer shell and drives the piston to move.

2. The stone removal device according to claim 1, characterized in that: The clamping assembly further includes a first return spring and a second return spring, wherein two ends of the first return spring are respectively connected to the housing and the moving cylinder, and the first return spring is located inside the housing; Two ends of the second return spring are respectively connected to the moving cylinder and the piston, and the second return spring is located inside the moving cylinder.

3. The stone removal device according to claim 2, characterized in that: The rotating component includes a rack, a gear and a swing arm, the rack is fixedly connected to the moving cylinder and is located on one side of the moving cylinder; the gear is rotatably connected to the outer shell, meshes with the rack, and is located inside the outer shell; the swing arm is fixedly connected to the gear and fixedly connected to the clamping plate.

4. The stone removal device according to claim 3, characterized in that: The conveying pipe includes a connecting pipe and a telescopic bellows, wherein the telescopic bellows is installed on one side of the moving cylinder and is connected to the moving cylinder; one end of the connecting pipe is connected to the telescopic bellows, and the other end of the connecting pipe passes through the clamping plate and is connected to the airbag, and the connecting pipe is installed on the airbag.

5. The stone removal device according to claim 4, characterized in that: The swing arm includes a side plate and a fixing piece. The side plate is fixedly connected to the gear and the clamping plate and is located on one side of the gear. The fixing piece is fixedly connected to the side plate and the connecting pipe and is sleeved on the connecting pipe.

6. The stone removal device according to claim 2, characterized in that: The driving component includes a piston rod, a push plate and a locking component. The piston rod is fixedly connected to the piston and is located on a side of the piston away from the second return spring; the push plate is fixedly connected to the piston rod and is slidably connected to the outer shell and is located at an end of the piston rod away from the piston; the locking component is arranged on the push plate.

7. The stone removal device according to claim 6, characterized in that: The driving component further includes a fixing plate, which is fixedly connected to the housing and is located on one side of the housing.

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