Stepless medical two-way handle structure capable of indicating direction through shifting piece

Abstract

The invention provides a stepless medical two-way handle structure with the direction shown by a shifting piece. The stepless medical two-way handle structure comprises a base. The operating handle is pivoted to the seat body, and a left driving gear and a right driving gear are arranged on the two sides of the operating handle in the axial direction; the transmission unit is provided with an intermediate gear which is arranged on the first pivoting shaft, and first ratchets are arranged on the two sides of the intermediate gear; the left reversing gear is arranged on the first pivoting shaft and is meshed with the left driving gear; the right reversing gear is arranged on the first pivoting shaft; the transmission gear is respectively meshed with the right driving gear and the right reversing gear; the output gear is arranged on the second pivoting shaft and is meshed with the intermediate gear; the rack is movably arranged on the base in the horizontal direction and meshed with the output gear, and a movable part is arranged at the end of the rack. The pull rod is provided with a plectrum indicating part which is connected to the first pivoting shaft; the shifting piece indicating part is pushed to enable the first pivoting shaft to selectively enable the right or left reversing gear to be meshed with the intermediate gear, the operating handle is pressed to enable the movable part to be far away from or close to the seat body, and the shifting piece indicating part points out the moving direction of the movable part at the same time.

Description

Technical Field

[0001] The invention relates to a stepless medical bidirectional handle structure with a paddle indicating direction, in particular to an invention which can steplessly control the opening and closing of a stone removal net basket. Background Art

[0002] The causes of stones formed in different parts of the human body vary. For example, a common cause of kidney stones is concentrated urine and reduced urine volume, which makes it easier for specific crystals to precipitate in the urinary tract and form stones in the kidney.

[0003] In addition, in recent years, as Chinese people gradually tend to adopt Western dietary habits, the prevalence of gallstones and bile duct stones has continued to rise, and the causes and mechanisms of stone formation are still not fully understood. In Western countries, the main cause of gallstone formation is the oversaturation of cholesterol in bile. In our country, pigment stones are mainly caused by bile duct infection. The bile duct refers to the intrahepatic bile duct that merges into the left and right hepatic ducts and the common hepatic duct and then merges into the cystic duct to form the common bile duct. The so-called bile duct stones refer to the phenomenon of stone blockage in the above-mentioned duct lumen.

[0004] In order to remove stones in the bile duct, a stone removal basket is inserted into the body to squeeze the stones and then remove them from the body.

[0005] Generally, when operating a lithotripsy basket, a medical handle is used to assist in opening or closing the basket portion that extends into the human body. For example, there is a patent announcement of the People's Republic of China, CN116058911A, "A medical handle and a medical lithotripsy". The medical handle includes a housing, a rack, a drive mechanism, a mating component that is configured to engage with the rack and respond to the drive mechanism and generate an engagement force on the rack that can push the rack to move, and a reversing mechanism that is operably associated with the mating component to achieve engagement or disengagement of the mating component with the rack. It has three working states. In the first working state, the first mating component and the second mating component respectively engage with the rack to lock the rack; in the second working state, the first mating component responds to the handle body and pushes the rack forward; in the third working state, the second mating component responds to the handle body and pushes the rack backward. The medical handle of the above-mentioned case can move in both directions, and no movement due to reaction force will occur during the reversing process. It has a simple structure and strong operability.

[0006] However, the above-mentioned previous case uses a ratchet to push the rack. When the handle is pressed, the moving distance of the rack cannot be fine-tuned according to the amplitude of pressing the handle. Each time the handle is pressed, the distance between the teeth of the rack must be satisfied. Therefore, it is inconvenient to operate the stone-taking net basket and it is impossible to make more precise fine-tuning movements.

[0007] Therefore, the present invention proposes the "stepless medical bidirectional handle structure" in accordance with the above problem. The above-mentioned prior art connects the rack and the handle through gears. Through the gear transmission, the amplitude of pressing the handle can be immediately reflected in the moving distance of the rack, and the rack can be selected to move forward or backward according to the meshing gear set.

[0008] However, in the above-mentioned prior art, when switching the rack to move forward or backward, the switch is made by pressing a button, and the user cannot intuitively check the current moving direction of the rack, which is inconvenient to operate.

[0009] In addition, due to the high pressure during rack lithotripsy and balloon dilation, it is more laborious to press the button to switch the direction of rack movement. Summary of the invention

[0010] Therefore, based on the above-mentioned previous case, the purpose of the present invention is to provide a stepless medical two-way handle structure with a paddle indicating direction, so that the operator can immediately see the current moving direction of the rack, and at the same time provide a lever arm switching button, using the lever principle to make gear shifting more labor-saving.

[0011] The present invention provides a stepless medical bidirectional handle structure with a paddle indicating direction, comprising:

[0012] A seat body, having a accommodating space, a grip portion and a fixing portion, the grip portion and the fixing portion are located on opposite sides along a height direction, the accommodating space is located between the grip portion and the fixing portion, the seat body is provided with two through holes along an axial direction, the two through holes are connected to the accommodating space, the axial direction is perpendicular to the height direction, a frame is arranged in the seat body and adjacent to the accommodating space, the frame has two guide portions arranged oppositely along the axial direction, the aforementioned guide portion is recessed with a guide portion opening, the guide portion opening is connected to the accommodating space, and the guide portions are respectively convexly arranged and extend out of the two through holes; an operating handle, the operating handle has a relative pivoting portion and a pressing portion, the pivoting portion is arranged on the frame, the pressing portion is away from the pivoting portion and extends out of the accommodating space, the pivoting portion is along the Two shafts are protruded on two opposite sides of the axial direction, and a left driving gear and a right driving gear are rotatably arranged on the above-mentioned two shafts via two one-way bearings respectively; a transmission unit is arranged in the accommodating space, comprising: a first pivot shaft, extending along the axial direction and having two opposite ends, the first pivot shaft is movably arranged in the accommodating space along the axial direction, the two ends of the first pivot shaft respectively extend into the positions of the two guide parts, and a first connecting part is arranged at one end of the first pivot shaft; an intermediate gear is rotatably arranged on the first pivot shaft, and the intermediate gear is respectively provided with a plurality of first ratchet teeth on two opposite sides along the axial direction; a left reversing gear is rotatably arranged on the first pivot shaft and is adjacent to one side of the intermediate gear, and the left reversing gear is meshed with The left driving gear has a plurality of second ratchet teeth on a side adjacent to the middle gear, and the second ratchet teeth can selectively mesh with the first ratchet teeth; a right reversing gear is rotatably arranged on the first pivot shaft and is adjacent to the other side of the middle gear, and the right reversing gear has a plurality of third ratchet teeth on a side adjacent to the middle gear, and the third ratchet teeth can selectively mesh with the first ratchet teeth; a transmission gear is rotatably arranged on the seat body in the axial direction and is located in the accommodating space, and the transmission gear is respectively meshed with the right driving gear and the right reversing gear; a second pivot shaft is extended along the axial direction and is arranged on the seat body and is located in the accommodating space; an output gear is rotatably arranged on the second pivot shaft, and the output gear is meshed with the middle gear. a gear; a rack extending in a horizontal direction, the horizontal direction being perpendicular to the axial direction and the height direction respectively, the rack being movably arranged on the frame in the horizontal direction, the rack being meshed with the output gear, a movable portion being arranged at one end of the rack, a placement space being formed between the movable portion and the aforementioned fixed portion; a connecting piece having two opposite ends, one end of which is pivotally connected to the first connecting piece; a pull rod having a second connecting piece and a paddle indicating portion which are arranged perpendicularly and connected to each other, a central shaft being arranged at the connecting position, the pull rod being rotatably arranged on one of the guide portions via the central shaft, the paddle indicating portion being able to selectively make the second connecting piece extend out of the opening of the guide portion, the second connecting piece being pivotally connected to the other end of the connecting piece;The pull rod is pushed to swing about the central axis, and the second connecting portion extends out of the opening of the guide portion. At the same time, the second connecting portion drives the first pivot axis through the connecting member, so that the first ratchet of the left reversing gear is engaged with the second ratchet, and the pressing portion is pivoted close to the handle portion. The left driving gear drives the rack to move along the horizontal direction through the left reversing gear, the intermediate gear, and the output gear, and drives the movable portion to approach the fixed portion along the horizontal direction. The paddle indicator portion simultaneously indicates the moving direction of the movable portion. The rod swings about the central axis, and the second connecting part is retracted into the opening of the guide part. At the same time, the second connecting part drives the first pivot shaft through the connecting member, so that the third ratchet of the right reversing gear is engaged with the adjacent first ratchet, and the pressing part is pivoted close to the handle. The right driving gear drives the rack to move along the horizontal direction through the transmission gear, the right reversing gear, the intermediate gear, and the output gear, and drives the movable part to move away from the fixed part along the horizontal direction. The paddle indicator simultaneously indicates the moving direction of the movable part. ;

[0013] Furthermore, the left reversing gear and the right reversing gear are rotatably disposed on the first pivot shaft via two other one-way bearings, and the rotation directions of the left reversing gear and the right reversing gear are exactly opposite.

[0014] Furthermore, the fixed portion has a first clamping groove, and the movable portion has a second clamping groove.

[0015] Furthermore, the rack has a relative rack surface and a plane, a guide groove is opened between the rack surface and the plane, two limiting members are arranged on the frame and located in the accommodating space, and the two aforementioned limiting members are arranged along the horizontal direction and extend into the guide groove.

[0016] Furthermore, the number of teeth of the left driving gear is 21, the number of teeth of the right driving gear is 19, the number of teeth of the intermediate gear is 27, the number of teeth of the left reversing gear is 27, the number of teeth of the right reversing gear is 24, the number of teeth of the transmission gear is 19, and the number of teeth of the output gear is 36.

[0017] Furthermore, the rack extends along the horizontal direction and has two opposite ends, and both ends extend out of the accommodating space.

[0018] Furthermore, the intermediate gear has a left annular groove and a right annular groove on the two opposite sides respectively, and the walls of the left annular groove and the right annular groove are provided with the aforementioned first ratchet teeth; the left reversing gear has a left convex column, and the wall surface of the left convex column is provided with the aforementioned second ratchet teeth corresponding to the aforementioned first ratchet teeth, and the left convex column can be selectively extended into the left annular groove so that the aforementioned second ratchet teeth are meshed with the aforementioned first ratchet teeth; the right reversing gear has a right convex column, and the wall surface of the right convex column is provided with the aforementioned third ratchet teeth corresponding to the aforementioned first ratchet teeth, and the right convex column can be selectively extended into the right annular groove so that the aforementioned third ratchet teeth are meshed with the aforementioned first ratchet teeth.

[0019] Furthermore, a positioning bead is retractably arranged on the paddle indicator portion along the height direction, and two slots are arranged along the horizontal direction and arranged on two opposite sides of one of the guide portions; the paddle indicator portion swings about the central axis to selectively engage the positioning bead in any of the aforementioned slots.

[0020] Furthermore, two output gear limiting plates are respectively arranged on opposite sides of the output gear along the axial direction, and the outer diameter of the aforementioned output gear limiting plates is larger than the outer diameter of the output gear; when the intermediate gear is engaged with the output gear, the portion of the intermediate gear engaged with the output gear is exactly located between the two aforementioned output gear limiting plates.

[0021] The following effects can be achieved according to the above technical features:

[0022] 1. When the gear is used to mesh with the rack and drive the rack to move, the position where the rack stays can be determined according to the degree of pressing the operating handle, and the degree of opening and closing of the stone-taking net basket can be precisely controlled.

[0023] 2. When the pull rod is pulled to select the left reversing gear or the right reversing gear to engage with the intermediate gear, the paddle indicator portion of the pull rod can directly display the moving direction of the active portion driven by the rack.

[0024] 3. Using the left drive gear and the right drive gear with fewer teeth to drive the left reversing gear and the right reversing gear with more teeth can achieve the effect of saving effort.

[0025] 4. A one-way bearing is installed between the shaft of the operating handle and the left drive gear and the right drive gear. When the operating handle is pressed and released, the left drive gear and the right drive gear will not be driven by the released operating handle and return to their original positions.

[0026] 5. Both the left reversing gear and the right reversing gear are equipped with one-way bearings. Pressing the operating handle drives the rack to move forward or backward in the horizontal direction. When the pressing handle is released, the rack will not move in the opposite direction due to the reaction force, and the rack can be stably fixed and stay in the position before the pressing handle is released.

[0027] 6. Pushing the first pivot shaft can selectively make the left reversing gear mesh with the middle gear, or make the right reversing gear mesh with the middle gear, and the operating handle can be operated to drive the rack to move forward or backward in the horizontal direction.

[0028] 7. By pulling the pull rod to pivot relative to the central shaft to pull or push the connected guide block and the first pivot shaft, the paddle indicator of the pull rod generates a force arm, thereby forming a lever principle to make gear shifting more labor-saving when switching the moving direction of the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional appearance diagram of the present invention.

[0030] Figure 2 It is a three-dimensional appearance diagram from another angle of the present invention.

[0031] Figure 3 It is an exploded view of the present invention.

[0032] Figure 4 It is a partial three-dimensional appearance diagram of the present invention.

[0033] Figure 5 This is a partial three-dimensional appearance diagram of the present invention from another angle.

[0034] Figure 6 It is a side view of the operating handle of the present invention.

[0035] Figure 7 It is a cross-sectional view of the operating handle of the present invention.

[0036] Figure 8 It is an exploded view of the transmission unit of the present invention.

[0037] Fig. 9 It is a right side view of the transmission unit of the present invention.

[0038] Fig.10 It is a left side view of the transmission unit of the present invention.

[0039] Fig.11 It is a cross-sectional view of the transmission unit of the present invention.

[0040] Fig.12 It is the appearance diagram of the placement space of the present invention.

[0041] Fig.13 The present invention is a schematic diagram of installing the operating part of the stone-removing basket in use.

[0042] Fig.14 It is a side view of the pull rod connected to the transmission unit.

[0043] Fig.15 This is a three-dimensional appearance diagram of the pull rod connected to the transmission unit.

[0044] Fig.16 Schematic diagram of the use of pressing the right reversing gear to drive the pull rod, so that the third ratchet tooth is engaged with the first ratchet tooth, and the right reversing gear is engaged with the intermediate gear.

[0045] Fig.17 A schematic diagram of driving the operating handle to move the rack backward in the horizontal direction.

[0046] Fig.18 A schematic diagram of the use of the present invention showing the operation part of the stone-removing basket being pulled to make the movable part of the present invention retreat and the basket part being opened.

[0047] Fig.19 Schematic diagram of the use of pressing the left reversing gear to drive the pull rod, so that the second ratchet tooth is engaged with the first ratchet tooth, and the left reversing gear is engaged with the intermediate gear.

[0048] Fig. 20 A schematic diagram of driving the operating handle to move the rack forward in the horizontal direction.

[0049] Fig.21 A schematic diagram of the use of the present invention to push the operating part of the stone-removing basket to move the movable part forward and close the basket part.

[0050] Fig. 22 It is a schematic diagram of installing a syringe on the use of the present invention.

[0051] Fig.23 The present invention is used to operate a syringe to draw water.

[0052] Fig.24 The present invention is used to inject water in a syringe into a balloon catheter to inflate the balloon.

[0053] Fig.25 The present invention is used to remove water from a balloon catheter and to shrink the balloon.

[0054] Description of reference numerals: 1-base; 11-handle; 12-fixing part; 121-first clamping groove; 13-left shell; 14-right shell; 15-perforation; 16-frame; 161-guide part; 162-guide part opening; 163-slot; 164-limiting member; 165-left frame; 166-right frame; 2-operating handle; 21-pivot part; 22-pressing part; 23-shaft; 24-right driving gear; 25-left driving gear; 3-transmission unit; 31-first pivot shaft; 32-guide block; 321-insertion hole; 322-fixing hole; 323-pin; 33-intermediate gear; 331-first ratchet; 332-right annular groove; 333-left annular groove; 34-right reversing gear; 341 -third ratchet; 342-right boss; 35-left reversing gear; 351-second ratchet; 352-left boss; 36-transmission gear; 37-second pivot shaft; 38-output gear; 381-output gear limiter; 39-rack; 391-rack surface; 392-plane; 393-movable part; 394-second clamping groove; 395-guide groove; 4-connecting piece; 5-pull rod; 51-second connecting part; 511-connecting plate; 512-second notch; 52-paddle indicator; 53-central shaft; 54-positioning bead; 6-one-way bearing; 7-stone extraction basket; 71-operating part; 72-basket part; 8-syringe; 9-balloon catheter; D1-height direction; D2-axial direction; D3-horizontal direction. DETAILED DESCRIPTION

[0055] In view of the above technical features, the main functions of the stepless medical bidirectional handle structure with a paddle pointing according to the present invention can be clearly presented in the following embodiments.

[0056] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention provides a paddle-directed stepless medical bidirectional handle structure, comprising a base 1, an operating handle 2, a transmission unit 3, a connecting piece 4 and a pull rod 5.

[0057] The seat body 1 has a containing space, a handle portion 11 and a fixing portion 12. The handle portion 11 and the fixing portion 12 are located at two opposite sides along a height direction D1. The containing space is located between the handle portion 11 and the fixing portion 12. A frame 16 is disposed in the shell and adjacent to the containing space. The frame 16 has two guide portions 161 disposed oppositely along an axial direction. The guide portion 161 is recessed with a guide portion opening 162. The guide portion opening 162 is connected to the containing space. The axial direction is perpendicular to the inner side of the housing. In the height direction; specifically, the frame 16 is composed of a left frame and a right frame, the base 1 is composed of a left shell 13 and a right shell 14, the left shell 13 is combined with the right shell 14 to form the accommodation space, the left frame is arranged on the left shell and adjacent to the accommodation space, the right frame is arranged on the right shell and adjacent to the accommodation space, there are two through holes 15 respectively arranged on the left shell 13 and the right shell 14, the two aforementioned guide parts 161 are respectively protruded and extend out of the two through holes. The fixing part 12 has a first clamping groove 121, and two card grooves 163 are arranged along a horizontal direction and arranged on the opposite sides of one of the guide parts 161.

[0058] The operating handle 2 has a pivoting portion 21 and a pressing portion 22 opposite to each other. The pivoting portion 21 is disposed on the frame 16 , and the pressing portion 22 is away from the pivoting portion 21 and extends out of the accommodating space. The transmission unit 3 is disposed in the accommodating space.

[0059] See also Figure 6 and Figure 7 As shown, the pivot portion 21 is provided with two shafts 23 protruding on two opposite sides along the axial direction D2, and the axial direction D2 is perpendicular to the height direction D1. A left driving gear 25 and a right driving gear 24 are rotatably disposed on the two shafts 23 via two one-way bearings 6 respectively; specifically, the number of teeth of the left driving gear 25 is 21, and the number of teeth of the right driving gear 24 is 19.

[0060] See also Figure 1 , Figure 3 , Figure 4 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the transmission unit 3 includes a first pivot shaft 31 , two guide blocks 32 , an intermediate gear 33 , a left reversing gear 35 , a right reversing gear 34 , a transmission gear 36 , a second pivot shaft 37 , an output gear 38 and a rack 39 .

[0061] The first pivot shaft 31 extends along the axial direction D2 and has two opposite ends. The first pivot shaft 31 is movably arranged in the accommodating space along the axial direction D2. The two guide blocks 32 respectively abut against the two opposite ends of the first pivot shaft 31 and respectively extend into the positions of the two aforementioned guide portions 161; specifically, the aforementioned guide block 32 has an insertion hole 321, a fixing hole 322 and a latch 323. The two opposite ends of the first pivot shaft 31 respectively extend into the insertion hole 321 of the aforementioned guide block 32 and are inserted into the fixing hole 322 via the latch 323. The aforementioned guide blocks 32 are combined at the two opposite ends of the first pivot shaft 31, and the aforementioned guide block 32 arranged at one end forms a first connecting portion.

[0062] The intermediate gear 33 is rotatably disposed on the first pivot shaft 31, and the intermediate gear 33 is provided with a plurality of first ratchet teeth 331 on two opposite sides along the axial direction D2; specifically, the intermediate gear 33 has a left annular groove 333 and a right annular groove 332 on the two opposite sides, and the wall surfaces of the left annular groove 333 and the right annular groove 332 are provided with the aforementioned first ratchet teeth 331, and the number of teeth of the intermediate gear 33 is 27.

[0063] The left reversing gear 35 is rotatably disposed on the first pivot shaft 31 and adjacent to one side of the intermediate gear 33. The left reversing gear 35 is meshed with the left driving gear 25. The left reversing gear 35 has a plurality of second ratchet teeth 351 on a side adjacent to the intermediate gear 33. The second ratchet teeth 351 can selectively mesh with the first ratchet teeth 331. Specifically, the left reversing gear 35 is rotatably disposed on the first pivot shaft 31 via a one-way bearing 6. The left reversing gear 35 has a left protruding column 352. The wall surface of the left protruding column 352 is provided with the second ratchet teeth 351 corresponding to the first ratchet teeth 331. The left protruding column 352 can selectively extend into the left annular groove 333 so that the second ratchet teeth 351 mesh with the first ratchet teeth 331. The number of teeth of the left reversing gear 35 is 27.

[0064] The right reversing gear 34 is rotatably disposed on the first pivot shaft 31 and is adjacent to the other side of the intermediate gear 33. The right reversing gear 34 has a plurality of third ratchet teeth 341 on a side adjacent to the intermediate gear 33, and the third ratchet teeth 341 can selectively mesh with the first ratchet teeth 331. Specifically, the right reversing gear 34 is rotatably disposed on the first pivot shaft 31 via the one-way bearing 6, and the rotation directions of the left reversing gear 35 and the right reversing gear 34 are exactly opposite. The right reversing gear 34 has a right protrusion 342, and the wall surface of the right protrusion 342 is provided with the third ratchet teeth 341 corresponding to the first ratchet teeth 331. The right protrusion 342 can selectively extend into the right annular groove 332 so that the third ratchet teeth 341 mesh with the first ratchet teeth 331. The number of teeth of the right reversing gear 34 is 24.

[0065] The transmission gear 36 is rotatably disposed on the right skeleton 166 in the axial direction D2 and is located in the accommodating space. The transmission gear 36 is respectively meshed with the right driving gear 24 and the right reversing gear 34; specifically, the transmission gear 36 is rotatably disposed on a transmission shaft, which is disposed on the right skeleton 166 and is located in the accommodating space. The transmission gear 36 is disposed above the right driving gear 24 in the height direction D1, and is disposed on the side of the right reversing gear 34 close to the right driving gear 24 in the horizontal direction D3. The number of teeth of the transmission gear 36 is 19.

[0066] The second pivot shaft 37 is extended along the axial direction D2 and disposed on the left frame 165 and is located in the accommodating space. The output gear 38 is rotatably disposed on the second pivot shaft 37, and two output gear limiting plates 381 are respectively disposed along the axial direction D2 on the two opposite sides of the output gear 38. The outer diameter of the aforementioned output gear limiting plates 381 is larger than the outer diameter of the output gear 38. When the output gear 38 is engaged with the intermediate gear 33, the portion of the intermediate gear 33 engaged with the output gear 38 is located between the two aforementioned output gear limiting plates 381. The number of teeth of the output gear 38 is 36 (the number of teeth of the gears presented in the present invention is mainly recorded in text, and the number of teeth presented in the drawings is only for illustration).

[0067] The rack 39 extends along a horizontal direction D3 and has two opposite end portions, and the horizontal direction D3 is respectively perpendicular to the axial direction D2 and the height direction D1. The rack 39 is movably disposed on the base body 1 along the horizontal direction D3, and the aforementioned end portions all extend out of the accommodating space. The rack 39 is engaged with the output gear 38; specifically, the rack 39 has a rack surface 391 and a plane 392 opposite to each other, and a guide groove 395 is opened between the rack surface 391 and the plane 392. Two limiting members 164 are disposed on the frame 16 and located in the accommodating space. The two aforementioned limiting members 164 are arranged along the horizontal direction D3 and extend into the guide groove 395.

[0068] The connecting member 4 has two opposite ends, one end of which is pivotally connected to the first connecting portion; the pull rod 5 has a second connecting portion 51 and a paddle indicating portion 52 which are perpendicular to and connected to each other, and a central rotation axis 53 is provided at the connecting position, the pull rod 5 is rotatably provided on one of the guide portions 161 via the central rotation axis 53, and the paddle indicating portion 52 can selectively make the second connecting portion 51 extend out of the guide portion opening 162, and the second connecting portion 51 is pivotally connected to the other end of the connecting member 4; specifically, the first connecting portion has a first notch, the second connecting portion 51 has two connecting pieces 511 and a second notch 512, the second notch 512 is located between the two connecting pieces 511, and the two connecting pieces 511 are respectively pivotally connected to one of the guide portions 161 along the height direction. The connecting member 4 is in the form of a sheet, and the two opposite ends of the connecting member 4 are respectively placed in the first notch and the second notch 512, and can pivot and swing relative to the first connecting portion and the second connecting portion 51. A positioning bead 54 is retractably arranged on the paddle indicating portion 52 along the height direction, and the positioning bead 54 is arranged adjacent to the central rotation axis 53; when the paddle indicating portion 52 swings about the central rotation axis 53, the positioning bead 54 can selectively engage in any of the aforementioned slots 163.

[0069] See also Fig.12 A movable portion 393 is disposed at one end of the rack 39 . A placement space is formed between the movable portion 393 and the fixed portion 12 . The movable portion 393 has a second clamping groove 394 .

[0070] See also Figure 3 , Fig.11 ,and Figures 13 to 18As shown, an operating portion 71 of a stone-removing net basket 7 is mounted on the second clamping groove 394 of the movable portion 393 and the first clamping groove 121 of the fixed portion 12, so that the operating portion 71 is set in the placement space. After installation, the pull rod 5 is pushed to swing with the central shaft 53, and the second connecting portion 51 is retracted into the guide portion opening 162. At the same time, the second connecting portion 51 drives the first pivot axis to push the right reversing gear 34 through the connecting member 4, so that the right reversing gear 34 is meshed with the intermediate gear 33; at this time, the paddle indicating portion 52 also points out the moving direction of the movable portion, and then the operating handle 2 is operated to pivot and swing the pressing portion 22, and the right driving gear 24 drives the rack 39 to move along the horizontal direction D3 through the transmission gear 36, the right reversing gear 34, the intermediate gear 33, and the output gear 38, thereby driving the movable portion 393 to move along the horizontal direction D3. The direction D3 moves away from the fixing portion 12, thereby pulling the operating portion 71, so that a basket portion 72 of the stone-removing basket 7 is opened and converted from a linear shape to a basket shape. Since the rack 39 is driven by the right driving gear 24 via the transmission gear 36, the right reversing gear 34, the intermediate gear 33 and the output gear 38, the swing distance of pressing the pressing portion 22 can be immediately reflected in the moving distance of the rack 39, that is, pressing the pressing portion 22 can move the rack 39. When the pressing portion 22 is released, since the aforementioned one-way bearing 6 is disposed inside the right driving gear 24, the right driving gear 24 will only rotate in a single direction, and will not rotate and swing in the opposite direction as the pressing portion 22 returns. Therefore, through the above-mentioned arrangement, the moving distance of the rack 39 can be precisely adjusted by pressing the pressing portion 22, so that the rack 39 can stay at any position within the moving stroke.

[0071] See also Figure 3 , Fig.11 , Fig.14 , Fig.19 , Fig. 20 and Fig.21Similarly, when the basket portion 72 is to be folded and converted from a basket shape to a line shape, the pull rod 5 is pushed to swing about the central axis 53, and the second connecting portion 51 is extended out of the guide portion opening 162. At the same time, the second connecting portion 51 drives the first pivot axis through the connecting member 4 to push the left reversing gear 35, so that the left reversing gear 35 is engaged with the middle gear 33, and the right reversing gear 34 is disengaged from the middle gear 33. At this time, the paddle indicator 52 also indicates the moving direction of the movable portion, and then the operating The handle 2 pivots the pressing portion 22, and the left driving gear 25 drives the rack 39 to move along the horizontal direction D3 via the left reversing gear 35, the intermediate gear 33, and the output gear 38, thereby driving the movable portion 393 to approach the fixed portion 12 along the horizontal direction D3, thereby pushing the operating portion 71 to close the basket portion 72. Similarly, the left driving gear 25 is also provided with the aforementioned one-way bearing 6, so the left driving gear 25 will only rotate in a single direction, and will not rotate and swing in the opposite direction as the pressing portion 22 returns to its original position.

[0072] See also Fig. 22 , Fig.23 , Fig.24 and Fig.25 As shown, the present invention is used with a syringe 8 and a balloon catheter 9. The use is the same as the above-mentioned embodiment. The syringe 8 is placed in the placement space, and the syringe 8 is pulled through the pressing portion 22 to make the syringe 8 extract a proper amount of liquid. Then, the mode is switched to the mode of pushing the syringe 8 to inject the liquid into the balloon catheter 9, so that the balloon of the balloon catheter 9 can expand and become a spherical shape. When the balloon is to be deflated to extract liquid, the mode is switched to the mode of pulling the syringe 8 to extract the liquid back into the syringe 8. The present invention can precisely adjust the moving distance of the rack 39, so the amount of liquid extracted or injected by the syringe 8 can be fine-tuned for easy control.

[0073] Based on the description of the above embodiments, one should be able to fully understand the operation, use and effects of the present invention. The above embodiments are only preferred embodiments of the present invention and should not be used to limit the scope of implementation of the present invention. That is, simple equivalent changes and modifications made according to the contents of the present invention are all within the scope of the present invention.

Claims

1. A stepless medical bidirectional handle structure with a paddle indicating direction, characterized in that: Include: A seat body having a containing space, a handle portion and a fixing portion, wherein the handle portion and the fixing portion are located at two opposite sides along a height direction, the containing space is located between the handle portion and the fixing portion, the seat body is provided with two through holes along an axial direction, the two through holes are connected to the containing space, the axial direction is perpendicular to the height direction, a frame is provided in the seat body and adjacent to the containing space, the frame has two guide portions arranged oppositely along the axial direction, the guide portion is provided with a guide opening hole concavely, the guide opening hole is connected to the containing space, and the guide portions are respectively provided convexly to extend out of the two through holes; an operating handle, the operating handle having a pivoting portion and a pressing portion opposite to each other, the pivoting portion being disposed on the frame, the pressing portion extending out of the accommodating space away from the pivoting portion, the pivoting portion being provided with two shafts protruding on two opposite sides along the axial direction, a left driving gear and a right driving gear being rotatably disposed on the two shafts via two one-way bearings; A transmission unit, disposed in the accommodating space, comprising: a first pivot shaft extending along the axial direction and having two opposite ends, the first pivot shaft being movably disposed in the accommodating space along the axial direction, the two ends of the first pivot shaft respectively extending into the positions of the two guide portions, and a first connecting portion being disposed at one end of the first pivot shaft; An intermediate gear is rotatably disposed on the first pivot shaft, and the intermediate gear is provided with a plurality of first ratchet teeth on two opposite sides along the axial direction; a left reversing gear rotatably disposed on the first pivot shaft and adjacent to one side of the intermediate gear, the left reversing gear meshing with the left driving gear, the left reversing gear having a plurality of second ratchet teeth on a side adjacent to the intermediate gear, the second ratchet teeth selectively meshing with the first ratchet teeth; a right reversing gear rotatably disposed on the first pivot shaft and adjacent to the other side of the intermediate gear, the right reversing gear having a plurality of third ratchet teeth on a side adjacent to the intermediate gear, the third ratchet teeth selectively meshing with the first ratchet teeth; A transmission gear is rotatably disposed on the seat body in the axial direction and is located in the accommodating space, and the transmission gear is respectively meshed with the right driving gear and the right reversing gear; A second pivot shaft extending along the axial direction and disposed on the base body and located in the accommodating space; an output gear rotatably disposed on the second pivot shaft, the output gear meshing with the intermediate gear; a rack extending in a horizontal direction, the horizontal direction being perpendicular to the axial direction and the height direction respectively, the rack being movably disposed on the frame along the horizontal direction, the rack being meshed with the output gear, a movable portion being disposed at one end of the rack, and a placement space being formed between the movable portion and the aforementioned fixed portion; A connecting member having two opposite ends, one end of which is pivotally connected to the first connecting portion; A pull rod having a second connecting portion and a paddle indicating portion which are perpendicularly connected to each other, a central shaft being provided at the connecting position, the pull rod being rotatably provided on one of the guide portions via the central shaft, the paddle indicating portion being able to selectively make the second connecting portion extend out of the opening of the guide portion, the second connecting portion being pivotally connected to the other end of the connecting member; The pull rod is pushed to swing about the central axis, and the second connecting portion is extended out of the opening of the guide portion. At the same time, the second connecting portion drives the first pivot axis through the connecting member, so that the first ratchet of the left reversing gear is engaged with the second ratchet, and the pressing portion is pivoted close to the handle portion. The left driving gear drives the rack to move along the horizontal direction through the left reversing gear, the intermediate gear, and the output gear, and drives the movable portion to move along the horizontal direction close to the fixed portion. The paddle indicator portion also indicates the moving direction of the movable portion. The pull rod is pushed to swing about the central axis, and the second connecting portion is retracted into the opening of the guide portion. At the same time, the second connecting portion drives the first pivot axis through the connecting piece, so that the aforementioned third ratchet tooth of the right reversing gear is engaged with the adjacent aforementioned first ratchet tooth, and the pressing portion is pivoted close to the handle portion. The right driving gear drives the rack to move along the horizontal direction through the transmission gear, the right reversing gear, the intermediate gear, and the output gear, and drives the movable portion to move away from the fixed portion along the horizontal direction. The paddle indicator portion also indicates the moving direction of the movable portion.

2. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: The left reversing gear and the right reversing gear are rotatably arranged on the first pivot shaft via two other one-way bearings, and the rotation directions of the left reversing gear and the right reversing gear are opposite.

3. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: The fixed portion has a first clamping groove, and the movable portion has a second clamping groove.

4. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: The rack has a rack surface and a plane opposite to each other, a guide groove is opened between the rack surface and the plane, two limiters are arranged on the frame and located in the accommodating space, and the two limiters are arranged along the horizontal direction and extend into the guide groove.

5. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: The number of teeth of the left driving gear is 21, the number of teeth of the right driving gear is 19, the number of teeth of the intermediate gear is 27, the number of teeth of the left reversing gear is 27, the number of teeth of the right reversing gear is 24, the number of teeth of the transmission gear is 19, and the number of teeth of the output gear is 36.

6. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: The rack extends along the horizontal direction and has two opposite ends, and both ends extend out of the accommodating space.

7. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: The intermediate gear has a left annular groove and a right annular groove on the two opposite sides respectively, and the walls of the left annular groove and the right annular groove are provided with the aforementioned first ratchet teeth; the left reversing gear has a left convex column, and the wall surface of the left convex column is provided with the aforementioned second ratchet teeth corresponding to the aforementioned first ratchet teeth, and the left convex column can be selectively extended into the left annular groove so that the aforementioned second ratchet teeth are meshed with the aforementioned first ratchet teeth; the right reversing gear has a right convex column, and the wall surface of the right convex column is provided with the aforementioned third ratchet teeth corresponding to the aforementioned first ratchet teeth, and the right convex column can be selectively extended into the right annular groove so that the aforementioned third ratchet teeth are meshed with the aforementioned first ratchet teeth.

8. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: A positioning bead is retractably arranged on the paddle indicator along the height direction, and two slots are arranged along the horizontal direction and arranged on two opposite sides of one of the guide parts; the paddle indicator swings with the central shaft to selectively engage the positioning bead in any of the aforementioned slots.

9. The stepless medical bidirectional handle structure with a paddle indicating direction as claimed in claim 1, characterized in that: There are two output gear limiting plates respectively arranged on the opposite sides of the output gear along the axial direction, and the outer diameter of the aforementioned output gear limiting plates is larger than the outer diameter of the output gear; when the intermediate gear is meshed with the output gear, the part of the intermediate gear meshed with the output gear is located between the two aforementioned output gear limiting plates.

Images