An intraoperative bone cement injection device

Abstract

The utility model discloses a kind of bone cement injection devices used in operation, it includes: bunker, the top of bunker is open, the bottom of bunker is equipped with discharge pipe mouth, discharge pipe mouth place is detachably connected with sealing cap;Bin cover detachable sealing connection is at the top opening of bunker, bin cover is connected with the stirring rod for stirring the material inside bunker and the suction pump for establishing the negative pressure environment inside bunker;Transition cover detachable sealing connection is at the top opening of bunker, the middle part of transition cover is equipped with screw hole, piston rod is connected in screw hole, the end of piston rod is equipped with piston, piston extrudes the material in bunker and is discharged through discharge pipe mouth;The output end of electric pistol can be connected with the power input end of stirring rod, suction pump, piston rod drive connection, the utility model structure is simple, supporting combination, convenient to use, bone cement is stirred evenly without bubble, bone cement injection efficiency is high in operation.

Description

Technical Field

[0001] This utility model belongs to the field of orthopedic tool technology, specifically relating to an intraoperative bone cement injection device. Background Technology

[0002] Currently, bone cement needs to be thoroughly mixed before being injected into human bone to ensure the filling effect. Bone cement is usually prepared manually by mixing powder and liquid. Manual mixing can result in uneven mixing, and air bubbles inside the bone cement can affect its lifespan, thus increasing the prosthesis loosening rate. In addition, surgeons face difficulties, time-consuming and labor-intensive procedures when injecting bone cement into the medullary cavity, which affects the efficiency of the operation.

[0003] Therefore, how to provide an intraoperative bone cement injection device that is easy for doctors to use and can mix bone cement evenly is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides an intraoperative bone cement injection device that can uniformly mix bone cement and facilitate efficient injection of bone cement during subsequent surgeries.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an intraoperative bone cement injection device, comprising:

[0006] The hopper has an open top and a discharge port at the bottom, with a sealing cap detachably connected to the discharge port.

[0007] The silo cover is detachably and sealed to the top opening of the silo. The silo cover is equipped with a stirring rod for stirring the material inside the silo and a suction pump for creating a negative pressure environment inside the silo.

[0008] A transition cover is detachably and sealingly connected to the top opening of the silo. A screw hole is provided in the middle of the transition cover, and a piston rod is connected in the screw hole. A piston is provided at the end of the piston rod. The piston squeezes the material in the silo and discharges it through the discharge pipe.

[0009] An electric pistol, the output end of which can be connected to the stirring rod, the power input end of the suction pump, and the piston rod.

[0010] The beneficial effects of this utility model are as follows: a hopper is used to hold bone cement, and the hopper cover has a stirring rod and a suction pump. When stirring the bone cement, an electric pistol is used to drive the suction pump to work, so that there is a negative pressure environment when stirring the bone cement, which ensures that the subsequent bone cement is stirred evenly without air bubbles. The stirred bone cement is extruded and injected through the transition cover and the piston on it. The piston rod is powered by an electric pistol, which is convenient to use. This product is a supporting component that can ensure the uniformity of bone cement stirring and the subsequent extrusion injection process.

[0011] Preferably, the hopper has a cylindrical structure, and the top outer side of the hopper is provided with a threaded part, and the hopper cover is screwed into the top opening of the hopper.

[0012] The resulting technical effect is that the silo has a cylindrical structure, which facilitates the use of the sealing cover and transition cover, and also facilitates the subsequent mixing by the mixing rod.

[0013] Preferably, the compartment cover has a connecting hole in the middle, the stirring rod is rotatably connected in the connecting hole, and the top of the stirring rod and located on the outside of the compartment cover has a transmission square rod head, which is connected to the output end of the electric pistol.

[0014] The resulting technical effect is that the connecting hole on the cover provides a basis for the rotational connection of the stirring rod. This is a rotational sealed connection, which can be transitioned using a bearing. The transmission square rod head on the stirring rod is easy to connect to the output end of the electric pistol, making power input convenient.

[0015] Preferably, the top of the compartment cover is connected to and communicates with a suction pipe, a one-way valve is connected to the suction pipe, and the suction port of the suction pump is connected to and communicates with the end of the suction pipe.

[0016] The resulting technical effect is that the suction pump can extract air from the silo through the suction pipe, thereby creating a negative pressure environment inside the silo, which facilitates the vacuum mixing of the bone cement in the later stage. The one-way valve can ensure the one-way air output and ensure the negative pressure effect inside the silo.

[0017] Preferably, the transition cover is screwed into the top opening of the hopper, and the top end of the piston rod is connected to an outer square head, which is connected to the output end of the electric pistol.

[0018] The resulting technical effect is that the transition cover and the chamber cover are used separately and not simultaneously. When bone cement needs to be squeezed and injected after mixing, the transition cover is replaced. The piston rod on the transition cover rotates, and the piston moves axially, thereby completing the bone cement squeezing and injection process. The rotation of the piston rod is powered by an electric pistol, making power access convenient.

[0019] Preferably, the piston has a disc structure, and the outer edge of the piston is slidably connected to the inner wall of the hopper.

[0020] The resulting technical effect is that the piston is adapted to the inner wall of the hopper, thereby ensuring the effect of the piston extruding bone cement.

[0021] Preferably, the electric pistol has a low-speed gear and a high-speed gear. In the low-speed gear, the output end of the electric pistol is connected to the piston rod in a driving connection. In the high-speed gear, the output end of the electric pistol is connected to the input end of the stirring rod or the suction pump in a driving connection.

[0022] The resulting technical effect is that the electric pistol has two speed modes: the low speed mode can complete the extrusion injection of bone cement, and the high speed mode is suitable for mixing bone cement and using a suction pump.

[0023] Preferably, the discharge port is connected to an external bone cement injection pipe.

[0024] The resulting technical effect is that the final bone cement injection process into the medullary cavity is completed through the bone cement injection tube at the outlet. Attached Figure Description

[0025] Figure 1 This is a diagram showing the components of an intraoperative bone cement injection device according to this utility model.

[0026] Figure 2 This is a diagram of the injection component of an intraoperative bone cement injection device according to the present invention;

[0027] Figure 3 for Figure 2 Schematic diagram of the internal structure;

[0028] Figure 4 This is a diagram of a bone cement preparation component for an intraoperative bone cement injection device according to this utility model;

[0029] Figure 5 for Figure 4 Schematic diagram of the internal structure;

[0030] Figure 6 for Figure 4 Usage status diagram.

[0031] 1. Hopper, 2. Discharge port, 3. Sealing cap, 4. Hopper cover, 5. Stirring rod, 51. Transmission square rod head, 6. Suction pump, 61. Input end, 7. Transition cover, 8. Piston rod, 81. Outer square head, 9. Piston, 10. Electric pistol, 101. High speed gear, 102. Low speed gear, 11. Suction pipe, 12. One-way valve, 13. Bone cement injection pipe. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] See appendix to this utility model Figures 1 to 6 According to an embodiment of the present invention, an intraoperative bone cement injection device includes:

[0034] The material bin 1 has an open top and a discharge pipe 2 at the bottom. A sealing cap 3 is detached and connected to the discharge pipe 2.

[0035] The hopper cover 4 is detachably and sealed to the top opening of the hopper 1. The hopper cover 4 is connected to a stirring rod 5 for stirring the material inside the hopper and a suction pump 6 for creating a negative pressure environment inside the hopper. The suction pump is not an electric pump and is powered by an electric pistol.

[0036] The transition cover 7 is detachably sealed and connected to the top opening of the hopper 1. A screw hole is opened in the middle of the transition cover 7, and a piston rod 8 is connected in the screw hole. A piston 9 is provided at the end of the piston rod 8. The piston 9 squeezes the material in the hopper and discharges it through the discharge port 2.

[0037] Electric pistol 10 is a tool for use in conjunction with other equipment. Its output end can be connected to the stirring rod 5, the power input end 61 of the suction pump, and the piston rod 8.

[0038] This product involves two processes. First, the material hopper 1, along with the hopper cover 4 and the stirring rod, is used to mix the bone cement. Note that before this process, the air inside the material hopper needs to be evacuated using a suction pump to facilitate the vacuum mixing of the bone cement later. After the bone cement is mixed, the hopper cover 4 needs to be removed and replaced with the transition cover 7. The piston rod and piston on the transition cover 7 are then used to complete the subsequent injection process of the bone cement.

[0039] In other embodiments, the hopper 1 has a cylindrical structure, and the top outer side of the hopper 1 is provided with a threaded part. The hopper cover 4 is sealed and screwed onto the top opening of the hopper 1 to ensure a sealed environment inside the hopper.

[0040] In some other specific embodiments, the center of the compartment cover 4 is provided with a connecting hole, and the stirring rod 5 is rotatably connected in the connecting hole. The top of the stirring rod 5 and located on the outside of the compartment cover 4 is provided with a transmission square rod head 51, which is connected to the output end of the electric pistol 10. The transmission square rod head 51 facilitates the transmission connection between the stirring rod and the output end of the electric pistol, and the power input is convenient.

[0041] In some other embodiments, the top edge of the silo cover 4 is connected to and communicates with a suction pipe 11, and a one-way valve 12 is connected to the suction pipe 11. The suction port of the suction pump 6 is connected to and communicates with the end of the suction pipe 11. The suction pump draws air to the outside through the suction pipe, and the one-way valve controls the one-way discharge of the gas, thereby ensuring a sealed environment inside the silo.

[0042] In some other specific embodiments, the transition cover 7 is screwed onto the top opening of the hopper 1, and the top of the piston rod 8 is connected to an outer square head 81, which is connected to the output end of the electric pistol 10.

[0043] In some other embodiments, the piston 9 has a disc structure, and the outer edge sidewall of the piston 9 is slidably connected to the inner wall of the hopper 1 to ensure the effective extrusion of the bone cement inside the hopper.

[0044] Specifically, the electric pistol 10 has a low-speed gear 101 and a high-speed gear 102. In the low-speed gear, the output end of the electric pistol 10 is connected to the piston rod 8 to complete the extrusion injection process of bone cement. In the high-speed gear, the output end of the electric pistol 10 is connected to the power input end of the stirring rod 5 or the suction pump 6 to complete the high-speed stirring and negative pressure suction process of bone cement.

[0045] More specifically, the discharge port 2 is connected to the external bone cement injection tube 13 to facilitate the guided injection of bone cement during the operation.

[0046] In practical use, the sealing cap 3 is a rubber cap, which has a good sealing effect and is easy to disassemble.

[0047] Working principle: During the procedure, bone cement powder and liquid are first added to the hopper 1 (sealed with a cap), the hopper cover 4 is closed, and the suction pump 6 is connected to establish a negative pressure environment inside the hopper 1. Subsequently, the output end of the electric pistol is connected to the stirring rod 5 to stir the bone cement in the hopper 1 for 1 minute. The hopper cover 4 is removed, and the transition cover 7 is connected. By setting the electric pistol to low speed, the piston rod is controlled to rotate, thereby squeezing the bone cement out of the discharge port 2, completing the intraoperative bone cement injection.

[0048] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intraoperative bone cement injection device, characterized in that include: The silo (1) has an open top and a discharge port (2) at the bottom. A sealing cap (3) is detachably connected to the discharge port (2). The silo cover (4) is detachably and sealed to the top opening of the silo (1). The silo cover (4) is connected to a stirring rod (5) for stirring the material inside the silo and a suction pump (6) for establishing a negative pressure environment inside the silo. Transition cover (7), the transition cover (7) is detachably and sealed to the top opening of the silo (1), the transition cover (7) has a screw hole in the middle, the screw hole is connected to a piston rod (8), the end of the piston rod (8) is provided with a piston (9), the piston (9) squeezes the material in the silo and discharges it through the discharge port (2); An electric pistol (10) is provided, the output end of which can be connected to the stirring rod (5), the power input end (61) of the suction pump, and the piston rod (8) via a transmission connection.

2. An intraoperative bone cement injection device according to claim 1, characterized in that The silo (1) has a cylindrical structure, and the top outer side of the silo (1) is provided with a threaded part. The silo cover (4) is screwed into the top opening of the silo (1).

3. An intraoperative bone cement injection device according to claim 1, wherein The compartment cover (4) has a connecting hole in the middle, and the stirring rod (5) is rotatably connected in the connecting hole. The top of the stirring rod (5) and located outside the compartment cover (4) has a transmission square rod head (51), which is connected to the output end of the electric pistol (10).

4. An intraoperative bone cement injection device according to claim 1, wherein The top of the cover (4) is connected to and communicates with a suction pipe (11), and a one-way valve (12) is connected to the suction pipe (11). The suction port of the suction pump (6) is connected to and communicates with the end of the suction pipe (11).

5. An intraoperative bone cement injection device according to claim 1, wherein The transition cover (7) is screwed into the top opening of the hopper (1), and the top end of the piston rod (8) is connected to an outer square head (81), which is connected to the output end of the electric pistol (10) in a transmission connection.

6. An intraoperative bone cement injection device according to claim 1, wherein, The piston (9) has a disc structure, and the outer sidewall of the piston (9) is slidably connected to the inner wall of the hopper (1).

7. An intraoperative bone cement injection device according to claim 1, wherein The electric pistol (10) is equipped with a low-speed gear (101) and a high-speed gear (102). In the low-speed gear, the output end of the electric pistol (10) is connected to the piston rod (8) in a transmission connection. In the high-speed gear, the output end of the electric pistol (10) is connected to the power input end of the stirring rod (5) or the suction pump (6).

8. An intraoperative bone cement injection device according to claim 1, wherein, The discharge port (2) is connected to the external bone cement injection pipe (13).

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