Bone cement injection device
By designing the push component and gear transmission structure of the bone cement injection device, the problem of instability in manual injection was solved, achieving stability and accuracy in bone cement injection and reducing the physical exertion of operators.
Patent Information
- Application Number
- CN202422968577.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In existing technologies, bone cement injection relies on manual operation, which leads to instability when facing high injection resistance, consumes doctors' physical strength, and affects the injection effect.
A bone cement injection device was designed, which adopts a push component and gear transmission structure, including a push rod, a push plate, a limiting plate, a guide block and a guide groove. Stable injection of bone cement is achieved through gear meshing and guide groove cooperation.
It significantly improves the stability and precision of operation. By ensuring the stability and precision of the push rod through the stability and precision of the push component and gear transmission, the stability and precision of the push rod are ensured, and the smoothness and precision of the push rod are reduced, thus reducing shaking and deviation during injection.
Smart Images
Figure CN223682598U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of orthopedics medical apparatus and instruments, especially to a bone cement injection device. BACKGROUND
[0002] The bone cement injection device is a key medical instrument in orthopedic surgery, mainly used for injecting bone cement into fracture or osteoporosis parts to reinforce and stabilize the skeleton. Bone cement, also known as bone cement, is a medical material composed of polymethyl methacrylate (PMMA) and bone powder, named after its appearance and properties similar to white cement used in construction after solidification. In clinical application, bone cement injection system is widely used in fracture repair and osteoporosis treatment, especially in minimally invasive spine surgery, such as percutaneous vertebra puncture. At present, most bone cement injection operations rely on manual completion, which is prone to instability in the injection process when facing high injection resistance, and requires high physical strength of the operator. This method not only consumes a lot of physical strength of the doctor, but also may affect the injection effect due to unstable pressure control.
[0003] Therefore, it is necessary to provide a new bone cement injection device to solve the above technical problems. SUMMARY
[0004] In order to overcome the defects existing in the prior art, the present application provides a bone cement injection device to solve the above problems.
[0005] The bone cement injection device provided by the utility model comprises an injection cylinder, a sealing cover connected to one end of the injection cylinder through threads, a push rod connected to the sealing cover through sliding, a push assembly connected to the side of the sealing cover away from the injection cylinder, and a push plate connected to one end of the push rod through rotation.
[0006] Preferably, the push assembly comprises two fixed plates connected to the side of the sealing cover away from the injection cylinder, the two fixed plates are located on the two sides of the push rod respectively, a driving gear is rotatably connected to the top of the side of the two fixed plates close to each other, the driving gear is located above the push rod, and a tooth groove corresponding to the driving gear is formed in the top of the push rod.
[0007] Preferably, one side of the bottom of one of the fixed plates is rotatably connected to a driving gear, one side of the top of the fixed plate is rotatably connected to a driven gear above the driving gear, the side of the driven gear is connected to the driving gear through a connecting rod penetrating the fixed plate, the outer sides of the driving gear and the driven gear are connected through a gear belt transmission, and a driving part for driving the driving gear to rotate is installed at the bottom of the side of the two fixed plates close to each other.
[0008] Preferably, the two fixing plates are connected with guide blocks on the side close to each other, and the push rod is provided with guide grooves on both sides for the guide blocks to slide.
[0009] Preferably, the end of the injection cylinder away from the sealing cover is connected with a hose through screw thread.
[0010] Preferably, the top of the injection cylinder is provided with scale lines.
[0011] Preferably, the bottom of the injection cylinder is connected with a handle on the side close to the sealing cover.
[0012] Compared with the prior art, the bone cement injection device has the following beneficial effects:
[0013] The push assembly is provided, and the operation stability and accuracy of the bone cement injection device are significantly improved, the innovative mechanism of gear transmission and gear slot meshing is adopted for the push assembly, fine regulation and control of the movement of the push rod can be realized, so that it is ensured that the push plate can smoothly and uniformly push the bone cement in the injection cylinder, and the high stability of the gear transmission structure and the synergistic effect of the guide block and the guide groove together ensure the stability of the push rod during movement, reduce the shaking and deviation that may occur during injection, and provide a powerful guarantee for the accuracy and safety of the operation. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The structure schematic view of a preferred embodiment of the bone cement injection device provided by the utility model is shown in the figure.
[0015] Figure 2 The structure schematic view of a preferred embodiment of the bone cement injection device provided by the utility model is shown in the figure. Figure 1 The front view structure schematic view is shown in the figure.
[0016] Figure 3 The structure schematic view of a preferred embodiment of the bone cement injection device provided by the utility model is shown in the figure. Figure 1 The structure schematic view of a preferred embodiment of the bone cement injection device provided by the utility model is shown in the figure.
[0017] In the figure, 1, injection cylinder; 11, hose; 12, sealing cover; 13, push rod; 14, push plate; 15, limiting plate; 2, fixing plate; 21, driving gear; 22, gear slot; 23, driving gear; 24, driven gear; 3, guide block; 31, guide groove; 4, scale line; 5, handle. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.
[0019] The specific implementation of the utility model is described in detail below in combination with specific embodiments.
[0020] The bone cement injection device provided by the utility model embodiment comprises a syringe 1, a sealing cover 12 threadedly connected to the outer side of one end of the syringe 1, a push rod 13 slidingly connected to the sealing cover 12, a push assembly connected to the side of the sealing cover 12 away from the syringe 1 and capable of maintaining the speed of bone cement injection through the push assembly, a push plate 14 rotatably connected to one end of the push rod 13 and located in the syringe 1, a limiting plate 15 connected to the end of the push rod 13 away from the push plate 14, and a hose 11 threadedly connected to the end of the syringe 1 away from the sealing cover 12.
[0021] It should be noted that the syringe 1 is made of transparent material and is used for storing bone cement, one end of the syringe 1 is threadedly connected to the sealing cover 12 to achieve a sealing effect, and the other end is threadedly connected to the hose 11 made of flexible material, the length and diameter of the hose 11 can be adjusted according to the operation requirements, and the hose 11 is bendable to adapt to different bone shapes and operation requirements. A sliding groove is arranged on the sealing cover 12 and used for slidingly connecting the push rod 13 to push the bone cement into the bone through the hose. One end of the push rod 13 is connected to the push plate 14 through a rotating shaft and located in the syringe 1, the push plate 14 is used for pushing the bone cement to move in the syringe 1, and the other end of the push rod 13 is connected to the limiting plate 15 to limit the movement range of the push rod. The push assembly is located on the side of the sealing cover 12 away from the syringe 1 and used for providing a stable pushing force to maintain the speed of bone cement injection.
[0022] In the embodiment of the utility model, the push assembly comprises two fixed plates 2 connected to the side of the sealing cover 12 away from the syringe 1, the two fixed plates 2 are located on the two sides of the push rod 13, a driving gear 21 is rotatably connected to the top of the side of the two fixed plates 2 close to each other, the driving gear 21 is located above the push rod 13, a tooth groove 22 corresponding to the driving gear 21 is arranged on the top of the push rod 13, a driving gear 23 is rotatably connected to the bottom of the side of one of the two fixed plates 2, a driven gear 24 is rotatably connected to the top of the side of the fixed plate 2 above the driving gear 23, the driven gear 24 is connected to the driving gear 21 through a connecting rod penetrating the fixed plate 2, the outer sides of the driving gear 23 and the driven gear 24 are drivingly connected through a gear belt, and a driving member for driving the driving gear 23 to rotate is installed on the bottom of the side of the two fixed plates 2 close to each other.
[0023] It should be noted that: two fixed plates 2 are connected on the side of the sealing cover 12 away from the syringe 1, and are located on both sides of the push rod 13, used to support and fix other components, the drive gear 21 is rotatably connected on the top of the side of the two fixed plates 2 relatively close to, located above the push rod 13, through the meshing with the tooth groove 22 on the top of the push rod 13, drives the movement of the push rod 13. The tooth groove 22 is opened on the top of the push rod 13, corresponding to the drive gear 21. Through the meshing with the drive gear 21, the movement of the push rod 13 is realized. The driving gear 23 is rotatably connected on the side of one of the fixed plates 2 bottom, the driven gear 24 is rotatably connected on the side of the fixed plate 2 top, located above the driving gear 23, the gear belt is connected on the outside of the driving gear 23 and the driven gear 24, through the transmission to realize the driving gear 23 driving the driven gear 24 rotating. The driving part is an electric motor installed on the bottom of the side of the two fixed plates 2 relatively close to, used to drive the driving gear 23 rotating. The driving part starts, drives the driving gear 23 rotating, the driving gear 23 drives the driven gear 24 rotating through the gear belt, the driven gear 24 drives the drive gear 21 rotating, the drive gear 21 meshes with the tooth groove 22 on the top of the push rod 13, pushes the push rod 13 moving, the push rod 13 drives the push plate 14 moving in the syringe 1, the bone cement is injected into the target position through the hose 11.
[0024] In the embodiment of the utility model, the side of the two fixed plates 2 relatively close to is connected with the guide block 3, and the two sides of the push rod 13 are provided with the guide groove 31 for the guide block 3 to slide.
[0025] It should be noted that: the guide block 3 is connected on the side of the two fixed plates 2 relatively close to, used to guide the movement of the push rod 13, ensure that it stably slides along the linear direction, the guide groove 31 is opened on the two sides of the push rod 13, matched with the guide block 3, the guide block 3 slides in the guide groove 31, provides the stable guide action for the push rod 13. When the drive gear 21 pushes the push rod 13 to move through the tooth groove 22, the guide groove 31 on the two sides of the push rod 13 interacts with the guide block 3 on the fixed plate 2, the guide block 3 slides in the guide groove 31, limits the lateral deviation of the push rod 13, ensures that it stably moves along the linear direction, through the cooperation of the guide block 3 and the guide groove 31, the push rod 13 can smoothly push the push plate 14, realizes the stable injection of the bone cement.
[0026] In the embodiment of the utility model, the top of the syringe 1 is provided with the scale line 4, and the bottom of the syringe 1 is connected with the handle 5 on the side close to the sealing cover 12.
[0027] It should be noted that the scale line 4 is arranged at the top of the syringe 1, which is used to show the amount of bone cement in the syringe 1, and by observing the scale line 4, the user can accurately know the amount of bone cement remaining in the syringe 1, so as to control the amount and speed of injection. The handle 5 is connected to the bottom of the syringe 1 near the sealing cover 12 on one side, which provides a holding point for the user, and the design of the handle 5 makes the user more convenient and comfortable when operating the syringe 1, and improves the stability and accuracy of the operation. Before or during injection, the user can observe the scale line 4 at the top of the syringe 1 to know the amount of bone cement in the syringe 1.
[0028] The circuit and control involved in the utility model are prior art, and will not be described in detail here.
[0029] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.
Claims
1. A bone cement injection device, characterized in that, Include: Injection cylinder (1); The outer side of one end of the injection cylinder (1) is connected with a sealing cover (12) through threads, and a push rod (13) is connected with the sealing cover (12) through sliding connection; Wherein, the sealing cover (12) is connected with a push assembly away from the injection cylinder (1), and the speed of bone cement injection can be maintained through the push assembly; One end of the push rod (13) is rotatably connected with a push plate (14), and the push plate (14) is located in the injection cylinder (1), and the end of the push rod (13) away from the push plate (14) is connected with a limiting plate (15).
2. The bone cement injection device of claim 1, wherein, The push assembly includes two fixed plates (2) connected with the sealing cover (12) away from the injection cylinder (1), and the two fixed plates (2) are located on both sides of the push rod (13), respectively, the top of the two fixed plates (2) is rotatably connected with a driving gear (21) on the side close to each other, and the driving gear (21) is located above the push rod (13), the top of the push rod (13) is provided with a tooth groove (22) corresponding to the driving gear (21).
3. The bone cement injection device of claim 2, wherein, One side of one of the fixed plates (2) is rotatably connected with a driving gear (23), and the top of one side of the fixed plate (2) is rotatably connected with a driven gear (24) above the driving gear (23), one side of the driven gear (24) penetrates the fixed plate (2) through a connecting rod and is connected with the driving gear (21), the outer side of the driving gear (23) and the driven gear (24) is drivingly connected through a gear belt, and the bottom of the side close to each other of the two fixed plates (2) is provided with a driving member for driving the driving gear (23) to rotate.
4. The bone cement injection device of claim 3, wherein, The side close to each other of the two fixed plates (2) is connected with a guide block (3), and the two sides of the push rod (13) are provided with guide grooves (31) for the guide block (3) to slide.
5. The bone cement injection device of claim 4, wherein, The end of the injection cylinder (1) away from the sealing cover (12) is connected with a hose (11) through threads.
6. The bone cement injection device of claim 5, wherein, The top of the injection cylinder (1) is provided with a scale line (4).
7. The bone cement injection device of claim 6, wherein, The bottom of the injection cylinder (1) is connected with a handle (5) on the side close to the sealing cover (12).