Bone cement injector

Abstract

The utility model relates to the technical field of medical instruments, and provides a bone cement injector which comprises an injector body, a mixing bin is arranged on the inner side of one end of the injector body, a first piston groove is formed in the edge of the inner wall of one side of the mixing bin, and a first connecting hole is formed in the middle of the inner wall of one side of the first piston groove. A first piston assembly is movably inserted into the inner side of the first connecting hole, a storage barrel is fixedly arranged on the outer wall of one end of the injector main body, a rectangular barrel is movably inserted into the middle of the top surface of the storage barrel, a stirring assembly is movably inserted into the inner side of the rectangular barrel, and the stirring assembly comprises a rotating shaft; according to the bone cement injector, through the arrangement of the stirring disc, bone cement is mixed in the injector, injection is conducted immediately after mixing, the contact time of water and the bone cement is shortened, and the problem that the bone cement is solidified to cause pipe blocking is solved; the treatment efficiency of injecting the bone cement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a bone cement injector. Background Art

[0002] Bone cement is a common name for bone adhesive. Bone cement is a medical material used in orthopedic surgery. It has such a popular name because some of its physical properties and appearance and properties after solidification are quite similar to white cement used in construction and decoration. Bone cement is a biosynthetic material that can increase the strength and stability of the vertebral body. When used, bone cement needs to be mixed with water to produce an effect. Currently, clinical practice is to first take a part of bone cement and a part of water, stir them in a container, and then inject them into an ordinary syringe to inject bone cement into the joint vertebra of the human body through surgery.

[0003] The above usage method has obvious disadvantages, because the bone cement is first mixed in the container, and when the mixture is injected into the joint vertebra through a syringe, the bone cement is already very viscous, which often causes the problem of syringe tube clogging.

[0004] Therefore, there is a need for a bone cement injector that is simple and convenient to operate, can mix bone cement inside the injector, and can be injected immediately after mixing, thereby reducing the contact time between water and bone cement, avoiding the problem of tube blockage caused by bone cement solidification, and improving the efficiency of bone cement injection treatment. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a bone cement injector, which is simple and convenient to operate. Bone cement can be mixed inside the injector and injected immediately after mixing, thereby reducing the contact time between water and bone cement, avoiding the problem of tube blockage caused by bone cement solidification, and improving the efficiency of bone cement injection treatment.

[0006] In order to achieve the above purpose, the utility model proposes the following specific solutions:

[0007] A bone cement injector, comprising an injector body, a mixing chamber is provided on the inner side of one end of the injector body, an injection hose is fixedly provided on one end of the injector body, the injection hose is connected with the mixing chamber, a first piston groove is provided on the edge of the inner wall of one side of the mixing chamber, a first connecting hole is provided in the middle of the inner wall of one side of the first piston groove, a first piston assembly is movably inserted in the inner side of the first connecting hole, the first piston assembly comprises a piston and a piston rod, the piston rod is movably inserted in the inner side of the first connecting hole, a piston is fixedly provided at one end of the piston rod, the piston is movably sleeved in the inner side of the first piston groove, a spring groove is provided in the middle of the inner wall of one side of the mixing chamber, a first spring is fixedly provided on the inner wall of one side of the spring groove, and a first spring is fixedly provided at one end of the first spring A pushing plate, the pushing plate is movably sleeved on the inner side of the mixing bin, a first material guide hole is provided on the edge of one side wall of the pushing plate, the first material guide hole is located on one side of the first piston groove, a first baffle is fixedly provided on the inner wall of one end of the first material guide hole, a storage cylinder is fixedly provided on the outer wall of one end of the injector body, the storage cylinder is connected with the mixing bin, a rectangular cylinder is movably inserted in the middle of the top surface of the storage cylinder, a stirring assembly is movably inserted on the inner side of the rectangular cylinder, the stirring assembly comprises a stirring plate, a rotating shaft, a rotating plate and a handle, the rotating shaft is movably inserted in the inner side of the rectangular cylinder, a stirring plate is fixedly provided on the lower end of the rotating shaft, the stirring plate is located on the inner side of the storage cylinder, a rotating plate is fixedly provided on the top end of the rotating shaft, and a handle is fixedly provided on the edge of the top surface of the rotating plate.

[0008] As a preferred technical solution for a bone cement injector of the utility model, a rectangular hole is provided in the middle of the top surface of the storage tube, the rectangular tube is movably inserted into the inner side of the rectangular hole, a fixing plate is fixedly provided on the edge of one side wall of the rectangular tube, a second spring is fixedly provided on the bottom surface of the fixing plate, and the lower end of the second spring is fixedly connected to the top surface of the storage tube.

[0009] As a preferred technical solution of a bone cement injector of the utility model, a second piston groove is provided on the edge of the inner wall of one side of the mixing chamber, the second piston groove is located below the first piston groove, a second connecting hole is provided in the middle of one side wall of the second piston groove, a second piston assembly is movably inserted into the inner side of the second connecting hole, and the second piston assembly has the same structure as the first piston assembly.

[0010] As a preferred technical solution of a bone cement injector of the utility model, a second material guide hole is provided on the edge of one side wall of the pushing disk, the second material guide hole is located below the first material guide hole, the second material guide hole is located on one side of the second piston groove, and a second baffle is fixedly provided on the inner wall of one end of the second material guide hole.

[0011] As a preferred technical solution for a bone cement injector of the utility model, a first material storage component is fixedly provided on the outer wall of the other end of the injector body, the first material storage component is located on one side of the storage tube, the first material storage component includes a material storage tube and a threaded cover, the material storage tube is fixedly connected to the outer wall of the injector body, the outer wall of the top end of the material storage tube is fixedly provided with an external thread, the outer side of the top end of the material storage tube is threadedly connected with a threaded cover, a sealing gasket is fixedly provided on the top surface of the inner side of the threaded cover, the sealing gasket is movably inserted into the inner side of the material storage tube, the sealing gasket is made of flexible material, a discharge hole is provided in the middle of the bottom surface of the material storage tube, and the discharge hole is communicated with the inner side of the first piston groove.

[0012] As a preferred technical solution of a bone cement injector of the utility model, a sealing groove is provided on the outer wall of the lower end of the storage barrel, the sealing groove is connected with the discharge hole, a sealing plate is movably inserted inside the sealing groove, and a traction plate is fixed on the edge of the top surface of the sealing plate.

[0013] As a preferred technical solution of a bone cement injector of the utility model, a second material storage component is fixedly provided on the outer wall of the other end of the injector body, the second material storage component is located below the first material storage component, the second material storage component is connected to the second piston groove, and the second material storage component has the same structure as the first material storage component.

[0014] As a preferred technical solution of a bone cement injector of the utility model, the size of the first material guide hole is matched with the size of the first piston groove, and the size of the second material guide hole is matched with the size of the second piston groove.

[0015] Compared with the existing technology, the utility model has the following beneficial effects:

[0016] The utility model stirs and mixes the bone cement and water in the mixing bin through the provided stirring assembly. After the bone cement and water are respectively transported to the mixing bin through the first piston groove and the second piston groove, the fixing plate is pressed downward to drive the rectangular tube to move toward the inside of the mixing bin. The rectangular tube drives the stirring disk to move into the inside of the mixing bin. Then, the handle is held and the rotating plate is rotated to drive the rotating shaft and the stirring disk to rotate, so that the bone cement and water can be stirred and mixed. This solution can mix the bone cement inside the injector and can be injected immediately after mixing, thereby reducing the contact time between water and bone cement, avoiding the problem of tube blockage caused by bone cement solidification, and improving the efficiency of bone cement injection treatment.

[0017] The utility model stores bone cement and water respectively by providing a first material storage component and a second material storage component. When performing injection treatment, the sealing plate is pulled to the side away from the material storage cylinder, and the bone cement and water flow into the inner sides of the first piston groove and the second piston groove respectively through the discharge hole, and then the piston rods in the first piston component and the second piston component are pushed to drive the piston to move to one side of the mixing bin, and the piston pushes the bone cement and water to be transported to the inner side of the mixing bin. When the two pistons move to the inner sides of the first material guide hole and the second material guide hole respectively, they are blocked by the first baffle plate and the second baffle plate. After waiting for the bone cement to be mixed, the piston rod is continued to be pushed. Due to the blocking of the first baffle plate and the second baffle plate, the movement of the piston drives the pushing plate to move, and the pushing plate pushes the bone cement through the injection hose and is injected into the patient's joint vertebral body. After the injection is completed, the piston rod is stopped from being pushed, and the pushing plate moves back to its original position under the elastic pulling force of the first spring. The scheme is simple and convenient to operate, and integrates the functions of storage, stirring and injection of bone cement, thereby greatly improving the efficiency of bone cement injection treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to better describe the technical solution of the utility model in detail, the present invention is further explained below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a three-dimensional diagram of the overall structure provided by the utility model;

[0020] Figure 2 It is a three-dimensional cross-sectional view of the utility model;

[0021] Figure 3 It is a three-dimensional diagram of the stirring assembly of the utility model;

[0022] Figure 4 A three-dimensional diagram of the pushing plate of the utility model;

[0023] Figure 5 For this utility model Figure 2 The enlarged schematic diagram of point A in the middle;

[0024] Figure 6 For this utility model Figure 2 The enlarged schematic diagram of point B in the middle;

[0025] Figure 7 For this utility model Figure 2 Enlarged schematic diagram of point C in the middle.

[0026] In the figure: 1, injector body; 11, injection hose; 12, mixing chamber; 13, first piston groove; 131, first connecting hole; 14, second piston groove; 141, second connecting hole; 15, spring groove; 151, first spring; 16, pushing plate; 161, first material guide hole; 162, first baffle; 163, second material guide hole; 164, second baffle; 2, first piston assembly; 21, piston; 22, piston rod; 3, second piston assembly Plug assembly; 4. First material storage assembly; 41. Material storage barrel; 411. External thread; 412. Material discharge hole; 413. Sealing groove; 414. Sealing plate; 415. Pulling plate; 42. Threaded cover; 421. Sealing gasket; 5. Second material storage assembly; 6. Storage barrel; 61. Rectangular barrel; 62. Fixed plate; 63. Second spring; 64. Rectangular hole; 7. Stirring assembly; 71. Stirring plate; 72. Rotating shaft; 73. Rotating plate; 74. Handle. DETAILED DESCRIPTION

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

[0028] Example

[0029] See also Figure 1-7 As shown, the utility model provides the following technical solutions: a bone cement injector, comprising an injector body 1, a mixing chamber 12 is provided on the inner side of one end of the injector body 1, an injection hose 11 is fixedly provided at one end of the injector body 1, and the injection hose 11 is connected with the mixing chamber 12. After the bone cement and water of this solution are mixed in the mixing chamber 12, they are injected into the patient's joint cone through the injection hose 11. The operation is simple and convenient, and the treatment efficiency is improved.

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, specifically, a storage cylinder 6 is fixedly provided on the outer wall of one end of the injector body 1 for storing and placing a stirring disk 71 to ensure that the stirring disk 71 does not affect the pushing of bone cement by the pushing disk 16. The storage cylinder 6 is connected to the mixing bin 12. A rectangular cylinder 61 is movably inserted in the middle of the top surface of the storage cylinder 6 for driving the stirring disk 71 to move. A rectangular hole 64 is provided in the middle of the top surface of the storage cylinder 6 for facilitating the movement of the rectangular cylinder 61. The rectangular cylinder 61 is movably inserted in the inner side of the rectangular hole 64. A fixing plate 62 is fixedly provided on the edge of one side wall of the rectangular cylinder 61 for supporting the rectangular cylinder 61. A second spring 63 is fixedly provided on the bottom surface of the fixing plate 62 for elastically supporting the fixing plate 62. The lower end of the second spring 63 is fixedly connected to the top surface of the storage cylinder 6. A stirring assembly 7 is movably inserted in the inner side of the rectangular cylinder 61. , which is used to stir and mix bone cement and water. The stirring assembly 7 includes a stirring disk 71, a rotating shaft 72, a rotating plate 73 and a handle 74. The rotating shaft 72 is movably inserted into the inner side of the rectangular tube 61 to drive the stirring disk 71 to rotate. A stirring disk 71 is fixedly arranged at the lower end of the rotating shaft 72 to evenly mix the bone cement and water. The stirring disk 71 is located inside the storage tube 6. A rotating plate 73 is fixedly arranged at the top of the rotating shaft 72 to drive the rotating shaft 72 to rotate. A handle 74 is fixedly arranged on the top edge of the rotating plate 73 to facilitate the rotation of the rotating plate 73. This solution can mix bone cement inside the injector, and it can be injected immediately after mixing, thereby reducing the contact time between water and bone cement, avoiding the problem of tube blockage caused by bone cement solidification, and improving the efficiency of bone cement injection treatment.

[0031] Reference Figure 1 , Figure 2 , Figure 4 and Figure 7As shown, specifically, a first piston groove 13 is provided at the edge of the inner wall of one side of the mixing chamber 12, which is used to transport bone cement or water to the inner side of the mixing chamber 12, and a first connecting hole 131 is provided in the middle of the inner wall of one side of the first piston groove 13 to facilitate the movement of the piston rod 22. A first piston assembly 2 is movably inserted inside the first connecting hole 131, which is used to push bone cement or water into the inner side of the mixing chamber 12 and drive the pushing plate 16 to move. The first piston assembly 2 includes a piston 21 and a piston rod 22. The piston rod 22 is movably inserted inside the first connecting hole 131 to drive the piston 21 to move. The piston 21 is fixedly provided at one end of the piston rod 22 to push the bone cement or water to move and drive the pushing plate 1 6 moves, the piston 21 is movably sleeved on the inner side of the first piston groove 13, and a second piston groove 14 is provided on the inner wall edge of one side of the mixing chamber 12, which has the same function as the first piston groove 13 and is used to transport bone cement or water to the inner side of the mixing chamber 12. The second piston groove 14 is located below the first piston groove 13, and a second connecting hole 141 is provided in the middle of one side wall of the second piston groove 14 to facilitate the movement of the second piston assembly 3. A second piston assembly 3 is movably inserted in the inner side of the second connecting hole 141, which has the same function as the first piston assembly 2 and is used to push bone cement or water into the inner side of the mixing chamber 12 and drive the pushing plate 16 to move. The second piston assembly 3 has the same structure as the first piston assembly 2, and the mixing chamber 12 is A spring groove 15 is provided in the middle of the inner wall of the side, which is used for connecting and fixing the first spring 151. A first spring 151 is fixedly provided on the inner wall of one side of the spring groove 15 to provide elastic tension for the pushing disk 16. A pushing disk 16 is fixedly provided at one end of the first spring 151 to push the mixed bone cement into the injection hose 11. The pushing disk 16 is movably sleeved on the inner side of the mixing bin 12. A first material guide hole 161 is provided on the edge of one side wall of the pushing disk 16 to guide bone cement or water. The first material guide hole 161 is located on one side of the first piston groove 13. The size of the first material guide hole 161 is adapted to the size of the first piston groove 13. A first baffle 162 is fixedly provided on the inner wall of one end of the first material guide hole 161 to block the first The piston assembly 2 passes through the first material guide hole 161, and a second material guide hole 163 is provided on the edge of one side wall of the pushing plate 16 for guiding bone cement or water. The second material guide hole 163 is located below the first material guide hole 161, and the second material guide hole 163 is located on one side of the second piston groove 14. The size of the second material guide hole 163 is adapted to the size of the second piston groove 14. A second baffle 164 is fixedly provided on the inner wall at one end of the second material guide hole 163 for blocking the second piston assembly 3 from passing through the second material guide hole 163. This solution can quickly push bone cement and water to the inside of the mixing bin 12 through the movement of the piston 21, and conveniently drive the pushing plate 16 to move, thereby completing the injection of bone cement. The operation is simple and efficient.

[0032] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, specifically, a first material storage component 4 is fixedly provided on the outer wall of the other end of the injector body 1 for storing bone cement or water. The first material storage component 4 is located on one side of the storage tube 6. The first material storage component 4 includes a material storage tube 41 and a threaded cover 42. The material storage tube 41 is fixedly connected to the outer wall of the injector body 1. The material storage tube 41 is used to store bone cement or water for subsequent use. An external thread 411 is fixedly provided on the outer wall of the top end of the material storage tube 41. A threaded cover 42 is threadedly connected to the outer side of the top end of the material storage tube 41 for closing the material storage tube 41. A sealing gasket 421 is fixedly provided on the top surface of the inner side of the threaded cover 42. The sealing gasket 421 is movably plugged into the inner side of the material storage tube 41. The sealing gasket 421 is made of a flexible material and can seal the material storage tube 41. A discharge hole 412 is provided in the middle of the bottom surface of the material storage tube 41 for exporting the bone cement or water stored in the material storage tube 41. The discharge hole 412 is aligned with the inner surface of the first piston groove 13. The side is penetrated, and a sealing groove 413 is provided on the outer wall of the lower end of the storage barrel 41 for moving the sealing plate 414. The sealing groove 413 is connected with the discharge hole 412, and a sealing plate 414 is movably inserted inside the sealing groove 413 for sealing the discharge hole 412. A traction plate 415 is fixedly provided on the edge of the top surface of the sealing plate 414 to facilitate pulling the sealing plate 414. A second storage component 5 is fixedly provided on the outer wall of the other end of the injector body 1, which has the same function as the first storage component 4 and is used to store one of bone cement or water. The second storage component 5 is located below the first storage component 4, and the second storage component 5 is connected with the second piston groove 14. The second storage component 5 has the same structure as the first storage component 4. This solution can store bone cement and water respectively through the first storage component 4 and the second storage component 5 to ensure that the two do not contact before use, and provide a sealed storage environment to prevent bone cement and water from being contaminated.

[0033] The working principle and use process of this utility model:

[0034] When in use, the threaded cover 42 can be unscrewed in advance, and the bone cement and water can be stored in different storage tubes 6 respectively, and then the threaded cover 42 can be tightened, and the sealing gasket 421 is inserted into the inner side of the storage tube 6 to perform a good seal. When bone cement needs to be injected, the sealing plate 414 is pulled to the side away from the storage tube 6, so that the bone cement is transported to the inner side of the first piston groove 13 through the discharge hole 412, and then the sealing plate 414 is pushed to seal the discharge hole 412, and the above operation is repeated again to transport the water inside the other storage tube 6 to the inner side of the second piston groove 14, and then the two piston rods 22 are pushed to drive the piston 21 to move toward the side of the mixing bin 12. The piston 21 pushes the bone cement and water to be transported to the inner side of the mixing bin 12. When the two pistons 21 move to the inner sides of the first guide hole 161 and the second guide hole 163 respectively, they are blocked by the first baffle 162 and the second baffle The plate 164 is blocked, and then the fixed plate 62 is pressed downward to drive the rectangular tube 61 to move toward the inside of the mixing chamber 12, and the rectangular tube 61 drives the stirring disk 71 to move into the inside of the mixing chamber 12, and then the handle 74 is held and the rotating plate 73 is rotated to drive the rotating shaft 72 and the stirring disk 71 to rotate, so that the bone cement and water can be stirred and mixed. After the stirring is completed, the hand pressing the fixed plate 62 is released, and the stirring disk 71 is pushed upward into the inside of the storage tube 6 under the elastic push of the second spring 63, and then the piston rod 22 is continued to be pushed. Due to the obstruction of the first baffle 162 and the second baffle 164, the movement of the piston 21 will drive the pushing disk 16 to move, and the pushing disk 16 pushes the bone cement through the injection hose 11 and is injected into the patient's joint vertebral body. After the injection is completed, stop pushing the piston rod 22, and under the elastic tension of the first spring 151, the pushing disk 16 moves back to its original position.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bone cement injector, comprising an injector body (1), characterized in that: A mixing chamber (12) is provided on the inner side of one end of the injector body (1), an injection hose (11) is fixedly provided on one end of the injector body (1), the injection hose (11) is connected with the mixing chamber (12), a first piston groove (13) is provided on the edge of the inner wall of one side of the mixing chamber (12), a first connecting hole (131) is provided in the middle of the inner wall of one side of the first piston groove (13), a first piston assembly (2) is movably inserted inside the first connecting hole (131), and the first piston assembly (2) comprises a piston ( The mixing chamber (12) comprises a mixing chamber (21) and a piston rod (22), the piston rod (22) being movably inserted into the inner side of the first connecting hole (131), a piston (21) being fixedly provided at one end of the piston rod (22), the piston (21) being movably sleeved at the inner side of the first piston groove (13), a spring groove (15) being provided at the middle of the inner wall of one side of the mixing chamber (12), a first spring (151) being fixedly provided at the inner wall of one side of the spring groove (15), a pushing disk (16) being fixedly provided at one end of the first spring (151), the pushing disk (16) being movably sleeved at the inner side of the first piston groove (13), and a spring groove (15) being provided at the middle of the inner wall of one side of the mixing chamber (12). The pushing disk (16) is sleeved on the inner side of the mixing bin (12), and a first material guide hole (161) is provided on the edge of one side wall of the pushing disk (16). The first material guide hole (161) is located on the side of the first piston groove (13). A first baffle (162) is fixedly provided on the inner wall of one end of the first material guide hole (161). A storage tube (6) is fixedly provided on the outer wall of one end of the injector body (1). The storage tube (6) is connected to the mixing bin (12). A rectangular tube (61) is movably inserted in the middle of the top surface of the storage tube (6). The rectangular tube (6 1) A stirring assembly (7) is movably inserted inside the rectangular tube (61), the stirring assembly (7) comprising a stirring disc (71), a rotating shaft (72), a rotating plate (73) and a handle (74); the rotating shaft (72) is movably inserted inside the rectangular tube (61); the stirring disc (71) is fixedly provided at the lower end of the rotating shaft (72); the stirring disc (71) is located inside the storage tube (6); the rotating plate (73) is fixedly provided at the top end of the rotating shaft (72); and the handle (74) is fixedly provided at the edge of the top surface of the rotating plate (73).

2. A bone cement injector according to claim 1, characterized in that: A rectangular hole (64) is provided in the middle of the top surface of the storage tube (6), and the rectangular tube (61) is movably inserted into the inner side of the rectangular hole (64). A fixing plate (62) is fixedly provided on the edge of one side wall of the rectangular tube (61), and a second spring (63) is fixedly provided on the bottom surface of the fixing plate (62), and the lower end of the second spring (63) is fixedly connected to the top surface of the storage tube (6).

3. A bone cement injector according to claim 2, characterized in that: A second piston groove (14) is provided at the edge of the inner wall of one side of the mixing chamber (12), and the second piston groove (14) is located below the first piston groove (13). A second connecting hole (141) is provided in the middle of one side wall of the second piston groove (14), and a second piston assembly (3) is movably inserted into the inner side of the second connecting hole (141), and the second piston assembly (3) has the same structure as the first piston assembly (2).

4. A bone cement injector according to claim 3, characterized in that: A second material guide hole (163) is provided on the edge of one side wall of the pushing plate (16), the second material guide hole (163) is located below the first material guide hole (161), the second material guide hole (163) is located on one side of the second piston groove (14), and a second baffle (164) is fixedly provided on the inner wall of one end of the second material guide hole (163).

5. A bone cement injector according to claim 4, characterized in that: A first material storage component (4) is fixedly provided on the outer wall of the other end of the injector body (1). The first material storage component (4) is located on one side of the storage tube (6). The first material storage component (4) comprises a material storage tube (41) and a threaded cover (42). The material storage tube (41) is fixedly connected to the outer wall of the injector body (1). An external thread (411) is fixedly provided on the outer wall of the top end of the material storage tube (41). A threaded cover (42) is threadedly connected to the outer side of the top end of the material storage tube (41). A sealing gasket (421) is fixedly provided on the inner top surface of the threaded cover (42). The sealing gasket (421) is movably plugged into the inner side of the material storage tube (41). The sealing gasket (421) is made of a flexible material. A discharge hole (412) is provided in the middle of the bottom surface of the material storage tube (41). The discharge hole (412) is communicated with the inner side of the first piston groove (13).

6. A bone cement injector according to claim 5, characterized in that: The outer wall of the lower end of the material storage barrel (41) is provided with a sealing groove (413), the sealing groove (413) is connected with the material discharge hole (412), a sealing plate (414) is movably inserted inside the sealing groove (413), and a traction plate (415) is fixedly provided on the edge of the top surface of the sealing plate (414).

7. A bone cement injector according to claim 6, characterized in that: A second material storage component (5) is fixedly provided on the outer wall of the other end of the injector body (1); the second material storage component (5) is located below the first material storage component (4); the second material storage component (5) is connected to the second piston groove (14); and the second material storage component (5) has the same structure as the first material storage component (4).

8. A bone cement injector according to claim 7, characterized in that: The size of the first material guide hole (161) is matched with the size of the first piston groove (13), and the size of the second material guide hole (163) is matched with the size of the second piston groove (14).

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