A curved bone cement injector

Abstract

This invention discloses a curved bone cement injector, belonging to the technical field of bone cement injectors. It includes a main module, a quantitative injection module, and a heat-conducting module. The main module includes an operating cylinder, with an injection cylinder fixedly connected to one side of the operating cylinder and an injection tube connected to one side of the injection cylinder. The heat-conducting module is disposed on the outer surface of the injection cylinder, and an adjustment door is hinged to the outer surface of the operating cylinder. The quantitative injection module includes a piston movably connected inside the injection cylinder, with a thrust assembly on one side of the piston. A handle is fixedly connected to the outer surface of the operating cylinder near the other side. Through the arrangement of the piston, thrust assembly, forward transmission assembly, reciprocating assembly, trigger assembly, and direction-limiting assembly, this injector can perform continuous quantitative injection during use. Compared to manual assisted injection, the injection volume is more accurate, avoiding the problem of injecting too much or too little in a single injection.

Description

Technical Field

[0001] This invention relates to the field of bone cement injector technology, and more specifically, to a curved bone cement injector. Background Technology

[0002] A flexible bone cement injector is a medical device used in orthopedic surgery to inject bone cement into specific areas of the bone. A key feature of a flexible bone cement injector is its flexible tip or working end. For example, an injector with a helical grooved flexible section has a gap along the circumference of the flexible section, allowing for bending at all angles. It can smoothly pass through both the straight and curved sections of the working channel. In orthopedic surgery, the surgeon first selects the appropriate flexible bone cement injector based on the surgical requirements.

[0003] According to the search, patent CN210494210U discloses a bone cement injector, including an injection cylinder. A threaded connector extends from the left end of the injection cylinder. The inner cavity of the injection cylinder includes an inner injection cylinder and an outer extraction cylinder. The inner injection cylinder is fitted into the inner cavity of the outer extraction cylinder. An extraction cavity is provided between the inner injection cylinder and the outer extraction cylinder. An extraction hole communicating with the inner cavity is opened on the side wall of the extraction cavity at the end located at the threaded connector. A connecting conduit communicating with the inner cavity is connected to the side wall of the extraction cavity at the end away from the threaded connector. A rubber pusher block is fitted into the inner cavity of the through-thrust hole of the inner injection cylinder. A pusher rod is axially provided at the center of the end of the rubber pusher block away from the threaded connector, penetrating the inner cavity of the pusher hole. By opening an extraction hole on the side wall of the extraction cavity and connecting a suction device to the external conduit, blood and gas in the bone marrow cavity are extracted using the suction device, improving the adhesion between the prosthesis and bone.

[0004] Regarding the aforementioned technologies, existing bone cement injectors typically have the structure described above. Currently, most clinically used bone cement injectors employ traditional structures, relying on manual operation by the surgeon to inject the bone cement. Because manual operation heavily depends on personal experience and feel, significant operational errors exist, making it difficult to guarantee the accuracy of bone cement injection. For example, injecting too much at once can easily cause local tissue thermal damage or allow bone cement to leak into blood vessels, forming embolisms; while injecting too little at once will affect the polymerization effect of the bone cement and reduce fixation strength. To address these issues, a curved bone cement injector is proposed. Summary of the Invention

[0005] To address the above problems, the present invention provides a curved bone cement injector, employing the following technical solution:

[0006] A curved bone cement injector includes a main module, a quantitative injection module, and a heat-conducting module. The main module includes an operating cylinder, an injection cylinder fixedly connected to one side of the operating cylinder, and an injection tube connected to one side of the injection cylinder. The heat-conducting module is disposed on the outer surface of the injection cylinder. An adjustment door is hinged to the outer surface of the operating cylinder. The quantitative injection module includes a piston movably connected inside the injection cylinder. A thrust assembly is disposed on one side of the piston. A handle is fixedly connected to the outer surface of the operating cylinder near the other side. The operating cylinder contains a forward transmission assembly, a reciprocating assembly, and a trigger assembly. The forward transmission assembly is connected to the thrust assembly, and the reciprocating assembly is connected to the forward transmission assembly. A movable groove is formed at the lower part of the outer surface of the operating cylinder. The trigger assembly is connected to the reciprocating assembly and extends to the outside of the operating cylinder through the movable groove. The thrust assembly extends to the outside of the operating cylinder. A directional component is disposed between the outer surface of the thrust assembly and the other side of the operating cylinder.

[0007] Furthermore, the thrust assembly includes a T-shaped groove formed on the piston, a rack rod slidably connected inside the T-shaped groove, a return spring fixedly connected between the rack rod and one end of the inner wall of the T-shaped groove, and the rack rod extending to the outside of the operating cylinder.

[0008] Furthermore, the forward transmission assembly includes a transverse rod rotatably connected inside the operating cylinder. A fixed wheel and a booster gear are fixedly connected to the outer surface of the transverse rod. The booster gear meshes with a rack and pinion. An external gear ring is rotatably connected to the outer surface of the fixed wheel.

[0009] Furthermore, the reciprocating assembly also includes an annular ratchet groove formed on the inner wall of the outer gear ring, and multiple floating grooves are formed on the outer surface of the fixed wheel. Each of the multiple floating grooves is movably connected to a movable ratchet. One end of each of the multiple movable ratchets is movably connected to the inside of the annular ratchet groove, and a floating spring is fixedly connected between the other end of each of the multiple movable ratchets and the inside of each of the multiple floating grooves.

[0010] Furthermore, the reciprocating assembly includes a T-shaped rod fixedly connected to the inner wall of the operating cylinder, a movable sleeve movably sleeved on the outer surface of the T-shaped rod, a transverse rack fixedly connected to the top of the movable sleeve, the transverse rack meshing with the outer surface of the outer gear ring, and a first spring fixedly connected between one end of the T-shaped rod and one end of the inner wall of the movable sleeve.

[0011] Furthermore, the reciprocating assembly also includes a fixed rod rotatably connected inside the operating cylinder. One end of the fixed rod is fixedly connected to a rotating disk. An adjustment groove is formed on the front end face of the rotating disk. An adjustment screw is rotatably connected inside the adjustment groove. One end of the adjustment screw extends to the outside of the rotating disk. A booster shaft is slidably connected inside the adjustment groove. The inside of the booster shaft is threadedly connected to the outer surface of the adjustment screw. A connecting rod is movably connected to the outer surface of the booster shaft. An adjustment rod is fixedly connected to one side of the movable sleeve. An installation sleeve is movably fitted onto the outer surface of the adjustment rod. One side of the installation sleeve is hinged to one end of the connecting rod. Multiple fixing holes are formed inside the adjustment rod. A threaded insert is movably inserted between the installation sleeve and one of the fixing holes. Two nuts are threadedly connected to the outer surface of the threaded insert.

[0012] Furthermore, the trigger assembly includes a lever rotatably connected inside the operating cylinder. A drive gear is fixedly connected to the outer surface of the lever, and a latch is fixedly connected to the outer surface of the drive gear. One end of the latch extends to the outside of the operating cylinder through a movable groove, and the outer surface of the latch contacts one end of the inner wall of the movable groove. A connecting gear is fixedly connected to the outer surface of the fixed rod, and the connecting gear meshes with the outer surface of the drive gear.

[0013] Furthermore, the trigger assembly also includes two torsion springs fixedly connected between the outer surface of the lever and the inner wall of the operating cylinder, with the drive gear located between the two torsion springs.

[0014] Furthermore, the directional component includes an adjusting ratchet groove formed at the bottom of the rack rod, and a mounting box is fixedly connected to the other side of the operating cylinder. A strip-shaped ratchet is movably connected inside the mounting box. The top end of the strip-shaped ratchet is movably connected to the inner wall of the adjusting ratchet groove, and a second spring is fixedly connected between the bottom of the strip-shaped ratchet and the bottom of the inner wall of the mounting box.

[0015] Furthermore, the heat-conducting module includes a circulating liquid tank fixedly connected to the outer surface of the injection cylinder, a heat-conducting pipe fixedly connected to the outer surface of the injection cylinder, both ends of the heat-conducting pipe extending into the interior of the circulating liquid tank, a circulating pump installed inside the circulating liquid tank, the output end of the circulating pump being fixedly connected to one end of the heat-conducting pipe, and a heater installed inside the circulating liquid tank.

[0016] In summary, the present invention has the following beneficial technical effects:

[0017] (1) By setting up a piston, a thrust assembly, a forward transmission assembly, a reciprocating assembly, a trigger assembly and a direction limiting assembly, this invention enables the injector to perform continuous quantitative injection when in use. Compared with manual booster injection, the injection volume is more accurate and avoids the problem of injecting too much or too little in a single time.

[0018] (2) The present invention, through the setting of fixing hole, threaded rod, nut and adjusting screw, allows the injection volume to be adjusted as needed, thereby enabling the injector to adapt to more needs and improve the overall functionality;

[0019] (3) The present invention, through the setting of the heat conduction module, enables the bone cement to be kept at the optimal injection temperature, thereby improving the injection effect of bone cement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the quantitative injection module of the present invention;

[0023] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 5 This is a partial cross-sectional view of the reciprocating component of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0026] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point C;

[0027] Figure 8 This is a schematic diagram of the trigger assembly of the present invention;

[0028] Figure 9 This is a schematic diagram showing the position of the connecting gear of the present invention;

[0029] Figure 10 This is a cross-sectional view of the orientation component of the present invention;

[0030] Figure 11 This is a cross-sectional view of the thermal conductive component of the present invention;

[0031] Figure 12 For the present invention Figure 11 Enlarged structural diagram at point D.

[0032] Explanation of the labels in the diagram:

[0033] 100. Main module; 110. Operating cylinder; 120. Injection cylinder; 130. Injection tube; 140. Adjustment gate;

[0034] 200. Quantitative injection module; 210. Piston; 220. Thrust assembly; 221. T-shaped groove; 222. Rack and pinion; 223. Return spring; 230. Handle; 240. Forward drive assembly; 241. Lateral rod; 242. Fixed wheel; 243. External gear ring; 244. Assist gear; 245. Floating spring; 246. Annular ratchet groove; 247. Movable ratchet; 250. Reciprocating assembly; 251. T-shaped rod; 252. Movable sleeve; 253. First spring; 254. Lateral rack; 25 5. Adjusting rod; 256. Mounting sleeve; 257. Fixing hole; 258. Threaded insert rod; 259. Nut; 2510. Fixing rod; 2511. Rotary disk; 2512. Adjusting screw; 2513. Push shaft; 260. Trigger assembly; 261. Lever; 262. Drive gear; 263. Lever; 264. Connecting gear; 265. Torsion spring; 270. Movable groove; 280. Directional limiting assembly; 281. Adjusting ratchet groove; 282. Mounting slot box; 283. Second spring; 284. Strip ratchet;

[0035] 300, Heat conduction module; 310, Circulating liquid tank; 320, Heat conduction pipe; 330, Circulating pump; 340, Heater. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The following is in conjunction with the appendix Figure 1-12 The present invention will be described in further detail below.

[0040] Please see Figure 1-12 A curved bone cement injector includes a main module 100, a quantitative injection module 200, and a heat-conducting module 300. The main module 100 includes an operating cylinder 110, an injection cylinder 120 fixedly connected to one side of the operating cylinder 110, and an injection tube 130 connected to one side of the injection cylinder 120. The heat-conducting module 300 is disposed on the outer surface of the injection cylinder 120. An adjustment door 140 is hinged to the outer surface of the operating cylinder 110. The quantitative injection module 200 includes a piston 210 movably connected inside the injection cylinder 120. A thrust assembly 220 is disposed on one side of the piston 210. The outer surface of the operating cylinder 110 is fixedly connected to the injection cylinder 120 near the other side. The operating cylinder 110 has a handle 230 and is equipped with a forward drive assembly 240, a reciprocating assembly 250 and a trigger assembly 260. The forward drive assembly 240 is connected to the thrust assembly 220 and the reciprocating assembly 250 is connected to the forward drive assembly 240. A movable groove 270 is provided on the lower part of the outer surface of the operating cylinder 110. The trigger assembly 260 is connected to the reciprocating assembly 250 and extends to the outside of the operating cylinder 110 through the movable groove 270. The thrust assembly 220 extends to the outside of the operating cylinder 110 and a limiting assembly 280 is provided between the outer surface of the thrust assembly 220 and the other side of the operating cylinder 110.

[0041] In use, the bone cement is located inside the syringe 120. The injection tube 130 is inserted into the designated position. Then, the operator manually pulls the trigger assembly 260, which contacts the other end of the inner wall of the movable groove 270. At this time, the trigger assembly 260 will drive the reciprocating assembly 250, which in turn drives the forward drive assembly 240 to push the thrust assembly 220. The thrust assembly 220 will push the piston 210 forward, thereby injecting the bone cement. When the trigger assembly 260 drives the reciprocating assembly 250 to reset, it will no longer drive the forward drive assembly 240. Continuously pulling the trigger assembly 260 will cause the piston 210 to move forward continuously, achieving continuous injection. The injection volume is the same for each injection, avoiding the problem of difficulty in controlling the injection volume with manual assistance, thus ensuring the injection effect. After pulling out the injection tube 130, the staff pushes the thrust assembly 220 to disengage from the forward transmission assembly 240 and the direction limiting assembly 280. Pulling the thrust assembly 220 backward can drive the piston 210 to move backward. By adjusting the reciprocating assembly 250, the injection volume of the trigger assembly 260 can be changed each time, so as to meet different usage needs. When the piston 210 moves, the direction limiting assembly 280 can restrict the movement direction of the thrust assembly 220 to prevent the piston 210 from moving backward during injection, thus improving the stability of the injector during use.

[0042] The thrust assembly 220 includes a T-shaped groove 221 formed on the piston 210. A rack 222 is slidably connected inside the T-shaped groove 221. A return spring 223 is fixedly connected between the rack 222 and one end of the inner wall of the T-shaped groove 221. The rack 222 extends to the outside of the operating cylinder 110. The forward transmission assembly 240 includes a transverse rod 241 rotatably connected inside the operating cylinder 110. A fixed wheel 242 and a booster gear 244 are fixedly connected to the outer surface of the transverse rod 241. The booster gear 244 meshes with the rack 222. An external gear ring 243 is rotatably connected to the outer surface of the fixed wheel 242. The reciprocating assembly 250 also includes an annular ratchet groove 246 formed on the inner wall of the external gear ring 243. The fixed wheel 242... The outer surface is provided with multiple floating grooves, and each of the multiple floating grooves is movably connected to a movable ratchet 247. One end of each of the multiple movable ratchet 247 is movably connected to the inside of an annular ratchet groove 246, and the other end of each of the multiple movable ratchet 247 is fixedly connected to the inside of the multiple floating grooves with a floating spring 245. The reciprocating assembly 250 includes a T-shaped rod 251 fixedly connected to the inner wall of the operating cylinder 110. A movable sleeve 252 is movably fitted on the outer surface of the T-shaped rod 251. A transverse rack 254 is fixedly connected to the top of the movable sleeve 252. The transverse rack 254 meshes with the outer surface of the outer gear ring 243. A first spring 253 is fixedly connected between one end of the T-shaped rod 251 and the inner wall of the movable sleeve 252. The reciprocating assembly 250 also includes a rotating link. A fixed rod 2510 is installed inside the operating cylinder 110. One end of the fixed rod 2510 is fixedly connected to a rotating disk 2511. An adjustment groove is opened on the front end face of the rotating disk 2511. An adjustment screw 2512 is rotatably connected inside the adjustment groove. One end of the adjustment screw 2512 extends to the outside of the rotating disk 2511. A booster shaft 2513 is slidably connected inside the adjustment groove. The inside of the booster shaft 2513 is threadedly connected to the outer surface of the adjustment screw 2512. A connecting rod is movably connected to the outer surface of the booster shaft 2513. An adjustment rod 255 is fixedly connected to one side of the movable sleeve 252. An installation sleeve 256 is movably fitted on the outer surface of the adjustment rod 255. One side of the installation sleeve 256 is hinged to one end of the connecting rod. The inside of the adjustment rod 255 is... The device has multiple fixing holes 257. A threaded rod 258 is movably inserted between the mounting sleeve 256 and the interior of one of the fixing holes 257. Two nuts 259 are threaded onto the outer surface of the threaded rod 258. The trigger assembly 260 includes a lever 261 rotatably connected inside the operating cylinder 110. A drive gear 262 is fixedly connected to the outer surface of the lever 261. A latch 263 is fixedly connected to the outer surface of the drive gear 262. One end of the latch 263 extends to the outside of the operating cylinder 110 through a movable groove 270. The outer surface of the latch 263 contacts one end of the inner wall of the movable groove 270. A connecting gear 264 is fixedly connected to the outer surface of the fixing rod 2510. The connecting gear 264 meshes with the outer surface of the drive gear 262.The trigger assembly 260 also includes two torsion springs 265 fixedly connected between the outer surface of the lever 261 and the inner wall of the operating cylinder 110, with the drive gear 262 located between the two torsion springs 265.

[0043] When the lever 263 is manually engaged and contacts the other end of the inner wall of the movable groove 270, the lever 263 will drive the drive gear 262 to rotate. The drive gear 262 will then drive the connecting gear 264 to rotate. The connecting gear 264 will then drive the fixed rod 2510 to rotate 180 degrees. When the booster shaft 2513 rotates, it will push the mounting sleeve 256 and the adjusting rod 255 through the connecting rod. The adjusting rod 255 will drive the movable sleeve 252 to move. The movable sleeve 252 will drive the transverse rack 254 to move and drive the external gear ring 243. The external gear ring 243 will drive the fixed wheel 242 and the transverse rod 241 to rotate through the movable ratchet 247. The transverse rod 241 will then drive the rack rod 222 through the booster gear 244. The rack and pinion 222 pushes the piston 210 forward, thereby injecting bone cement. Subsequently, the torsion spring 265 drives the lever 261 to reset, causing the latch 263 and the drive gear 262 to reset. At this time, the transverse rack 254 moves in the opposite direction, and the outer gear ring 243 moves on the outer surface of the fixed wheel 242. The annular ratchet groove 246 pushes the booster gear 244 to reciprocate, causing the outer gear ring 243 to idle and not drive the transverse rod 241 to rotate. This prevents the piston 210 from moving backward. Continuously pulling the latch 263 allows the piston 210 to move forward continuously, achieving continuous injection with the same amount injected each time, avoiding the problem of difficulty in controlling the injection volume with manual boosting.

[0044] The directional control assembly 280 includes an adjustment ratchet groove 281 formed at the bottom of the rack 222. A mounting box 282 is fixedly connected to the other side of the operating cylinder 110. A strip ratchet 284 is movably connected inside the mounting box 282. The top of the strip ratchet 284 is movably connected to the inner wall of the adjustment ratchet groove 281. A second spring 283 is fixedly connected between the bottom of the strip ratchet 284 and the bottom of the inner wall of the mounting box 282.

[0045] The cooperation between the ratchet 284 and the adjusting ratchet 281 prevents the rack rod 222 from moving backward, ensuring the stability of the injection operation.

[0046] The heat-conducting module 300 includes a circulating liquid tank 310 fixedly connected to the outer surface of the injection cylinder 120, a heat-conducting pipe 320 fixedly connected to the outer surface of the injection cylinder 120, both ends of the heat-conducting pipe 320 extending into the interior of the circulating liquid tank 310, a circulating pump 330 installed inside the circulating liquid tank 310, the output end of the circulating pump 330 fixedly connected to one end of the heat-conducting pipe 320, and a heater 340 installed inside the circulating liquid tank 310.

[0047] Turning on the heater 340 allows the liquid inside the circulating fluid tank 310 to maintain a certain temperature. At this time, turning on the circulating pump 330 drives the liquid to circulate through the heat conduction pipe 320, which can conduct heat to the bone cement inside the syringe 120, maintain its temperature, and facilitate subsequent injection.

[0048] The implementation principle of this invention is as follows: During use, the bone cement is located inside the injection cylinder 120. The injection tube 130 is inserted into the designated position. Then, the operator manually pulls the lever 263 to contact the other end of the inner wall of the movable groove 270. At this time, the lever 263 will drive the drive gear 262 to rotate. The drive gear 262 will drive the connecting gear 264 to rotate. The connecting gear 264 will drive the fixed rod 2510 to rotate 180 degrees. When the push shaft 2513 rotates, it will push the mounting sleeve 256 and the adjusting rod 255 through the connecting rod. The adjusting rod 255 drives the movable sleeve 252 to move. The movable sleeve 252 drives the transverse rack 254 to move and drive the external gear ring 243. The external gear ring 243 passes through the movable ratchet 247. The fixed wheel 242 and the transverse rod 241 are rotated. The transverse rod 241 pushes the rack rod 222 through the booster gear 244. The rack rod 222 pushes the piston 210 forward, thereby injecting bone cement. Subsequently, the torsion spring 265 drives the lever 261 to reset, causing the latch 263 and the drive gear 262 to reset. At this time, the transverse rack 254 moves in the opposite direction, and the outer gear ring 243 will move on the outer surface of the fixed wheel 242. The annular ratchet groove 246 pushes the booster gear 244 to reciprocate and retract, so that the outer gear ring 243 rotates freely and does not drive the transverse rod 241 to rotate, thus preventing the piston 210 from moving backward. Subsequently, continuously pulling the latch 263 will make the piston 210 move forward continuously to achieve continuous injection. The injection volume is consistent each time, avoiding the problem of difficulty in controlling the injection volume during manual boosting and ensuring injection effectiveness. When the outer gear ring 243 is idling, the engagement of the strip ratchet 284 and the adjusting ratchet 281 prevents the rack rod 222 from moving backward, ensuring the stability of the injection operation. After injection, the injection tube 130 is pulled out. When the piston 210 needs to move backward, the rack rod 222 is pushed to move inside the T-shaped slide groove 221 to compress the return spring 223, causing the rack rod 222 to disengage from the booster gear 244. At the same time, the adjusting ratchet 281 disengages from the strip ratchet 284. Pulling the rack rod 222 backward will move the piston 210 backward. Before use, the threaded insert 258 can be removed, and the adjusting screw 25 can be rotated. 12. Adjusting screw 2512 can push push shaft 2513 to move, causing connecting rod to move. At this time, mounting sleeve 256 will move on the outer surface of adjusting rod 255. After movement, the operator inserts threaded rod 258 between mounting sleeve 256 and another fixing hole 257, thus connecting mounting sleeve 256 and adjusting rod 255. At this time, the distance that push shaft 2513 pushes connecting rod during operation will change, thereby changing the forward distance of piston 210, and thus changing the amount of bone cement injected in a single operation, improving the overall functionality of the operation, and making it easier to meet different usage needs. Turning on heater 340 can keep the liquid inside circulating fluid tank 310 at a certain temperature.At this point, turning on the circulation pump 330 causes the liquid to circulate through the heat-conducting pipe 320, which heats the bone cement inside the syringe 120, maintaining its temperature for subsequent injection.

[0049] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A curved cement injector comprising a body module (100), a dosing injection module (200) and a heat conducting module (300), characterized in that: The main module (100) includes an operation cylinder (110), one side of the operation cylinder (110) is fixedly connected with an injection cylinder (120), one side of the injection cylinder (120) is connected with an injection pipe (130), the heat conduction module (300) is arranged on the outer surface of the injection cylinder (120), and the outer surface of the operation cylinder (110) is hingedly connected with an adjusting door (140); The quantitative injection module (200) includes a piston (210) movably connected in the injection cylinder (120), one side of the piston (210) is provided with a thrust assembly (220), the outer surface of the operation cylinder (110) is fixedly connected with a handle (230) at the position close to the other side, the inside of the operation cylinder (110) is provided with a forward transmission assembly (240), a reciprocating assembly (250) and a trigger assembly (260), the forward transmission assembly (240) is connected with the thrust assembly (220), the reciprocating assembly (250) is connected with the forward transmission assembly (240), a movable groove (270) is formed in the lower part of the outer surface of the operation cylinder (110), the trigger assembly (260) is connected with the reciprocating assembly (250), and the trigger assembly (260) extends to the outside of the operation cylinder (110) through the movable groove (270), the thrust assembly (220) extends to the outside of the operation cylinder (110), and a limiting assembly (280) is arranged between the outer surface of the thrust assembly (220) and the other side of the operation cylinder (110); The thrust assembly (220) includes a T-shaped sliding groove (221) formed on the piston (210), a rack rod (222) is slidably connected in the T-shaped sliding groove (221), a reset spring (223) is fixedly connected between one end of the rack rod (222) and the inner wall of the T-shaped sliding groove (221), and the rack rod (222) extends to the outside of the operation cylinder (110); The forward transmission assembly (240) includes a transverse rod (241) rotatably connected in the operation cylinder (110), the outer surface of the transverse rod (241) is fixedly connected with a fixed wheel (242) and a boost gear (244), the boost gear (244) is meshed with the rack rod (222), and the outer surface of the fixed wheel (242) is rotatably connected with an external gear ring (243); The reciprocating assembly (250) further includes an annular ratchet groove (246) formed in the inner wall of the external gear ring (243), a plurality of floating grooves are formed in the outer surface of the fixed wheel (242), the inside of each floating groove is movably connected with an active ratchet (247), one end of each active ratchet (247) is movably connected in the inside of the annular ratchet groove (246), and the other end of each active ratchet (247) is fixedly connected with a floating spring (245) between the inside of each floating groove. The reciprocating assembly (250) comprises a T-shaped rod (251) fixedly connected to the inner wall of the operating barrel (110), the outer surface of the T-shaped rod (251) movably sleeved with a movable sleeve (252), the top of the movable sleeve (252) fixedly connected with a transverse rack (254), the transverse rack (254) engaged with the outer surface of the outer gear ring (243), and the T-shaped rod (251) and one end of the inner wall of the movable sleeve (252) fixedly connected with a first spring (253). The reciprocating assembly (250) further comprises a fixed rod (2510) rotatably connected to the inside of the operating barrel (110), one end of the fixed rod (2510) fixedly connected with a rotating disc (2511), the front end face of the rotating disc (2511) is provided with an adjusting groove, the inside of the adjusting groove rotatably connected with an adjusting screw (2512), one end of the adjusting screw (2512) extended to the outside of the rotating disc (2511), the inside of the adjusting groove slidably connected with a boost shaft (2513), the inside of the boost shaft (2513) and the outer surface of the adjusting screw (2512) threadedly connected, the outer surface of the boost shaft (2513) movably connected with a connecting rod, one side of the movable sleeve (252) fixedly connected with an adjusting rod (255), the outer surface of the adjusting rod (255) movably sleeved with a mounting sleeve (256), one side of the mounting sleeve (256) hinged with one end of the connecting rod. The trigger assembly (260) comprises a trigger rod (261) rotatably connected to the inside of the operating barrel (110), the outer surface of the trigger rod (261) fixedly connected with a driving gear (262), the outer surface of the driving gear (262) fixedly connected with a trigger (263), one end of the trigger (263) extended to the outside of the operating barrel (110) through a movable groove (270), the outer surface of the trigger (263) in contact with one end of the inner wall of the movable groove (270), the outer surface of the fixed rod (2510) fixedly connected with a connecting gear (264), and the connecting gear (264) and the outer surface of the driving gear (262) are mutually engaged.

2. A curved cement injector according to claim 1, characterized in that: The inside of the adjusting rod (255) is provided with a plurality of fixed holes (257), the mounting sleeve (256) and the inside of one of the fixed holes (257) movably inserted with a threaded plug rod (258), and the outer surface of the threaded plug rod (258) threadedly connected with two nuts (259).

3. A curved cement injector according to claim 2, wherein: The trigger assembly (260) further comprises two torsion springs (265) fixedly connected between the outer surface of the trigger rod (261) and the inner wall of the operating barrel (110), and the driving gear (262) located between the two torsion springs (265).

4. A curved cement injector according to claim 3, wherein: Said limiting component (280) includes the adjusting ratchet groove (281) opened in the bottom of rack rod (222), the other side of operating cylinder (110) is fixedly connected with installation slot box (282), the inside of installation slot box (282) is movably connected with strip ratchet (284), the top of strip ratchet (284) is movably connected with the inner wall of adjusting ratchet groove (281), the bottom of strip ratchet (284) and the bottom of the inner wall of installation slot box (282) are fixedly connected with second spring (283).

5. A curved cement injector according to claim 4, wherein: Said heat conduction module (300) includes the circulating liquid tank (310) fixedly connected on the outer surface of injection cylinder (120), the outer surface of injection cylinder (120) is fixedly connected with heat conduction pipe (320), both ends of heat conduction pipe (320) extend to the inside of circulating liquid tank (310), the inside of circulating liquid tank (310) is installed with circulating pump (330), the output end of circulating pump (330) is fixedly connected with one end of heat conduction pipe (320), the inside of circulating liquid tank (310) is installed with heater (340).

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