Bone cement mixing devices, apparatuses, systems, and methods

Abstract

The application discloses a bone cement mixing device, equipment, system and method, and belongs to the technical field of medical instruments. The bone cement mixing device comprises a shell, the shell defining an inner cavity for receiving bone cement components; a stirring part arranged in the inner cavity; and a driving part for driving the stirring part to synchronously perform first and second movements to stir the bone cement components and prepare a bone cement mixture. The first movement is that the stirring part rotates around a rotation axis, and the second movement is that the stirring part moves along the direction of the rotation axis. The stirring part of the bone cement mixing device can rotate around the rotation axis and synchronously move along the rotation axis in the inner cavity under the driving of the driving part, so that the bone cement components in the inner cavity can be synchronously stirred in two dimensions of the rotation direction and the movement direction, the stirring efficiency is improved, the mixing degree is enhanced, the bone cement reaction is sufficient, and the strength of the solidified bone cement is ensured.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to a bone cement mixing device, equipment, system, and method. Background Technology

[0002] Vertebroplasty is a spinal surgery that involves percutaneously injecting bone cement into the vertebral body through pedicle screws or other routes to strengthen and stabilize the fractured vertebra, provide support, and relieve pain. Currently, the most commonly used bone cement in this procedure is polymethyl methacrylate (PMMA), produced by thoroughly mixing polymer powder and liquid monomers in a specific ratio and reacting for several minutes. From the start to the end of the reaction, as the bone cement powder and liquid are thoroughly mixed, the PMMA continuously polymerizes, producing irritating and toxic gases. The bone cement mixture gradually thickens from a thin consistency and is then manually transferred to a bone cement injection device, which is finally injected into the vertebral body, where it completely solidifies.

[0003] Currently, bone cement mixing is mostly done manually by stirring or shaking it in a mixing container with a stirring rod, and then transferring it to an injection device for subsequent injection. In this method, the degree of mixing of bone cement varies greatly. Insufficient mixing leads to incomplete reaction of the bone cement, resulting in insufficient strength of the cured bone cement. Summary of the Invention

[0004] Purpose of the invention: This application provides a bone cement mixing device to solve the technical problem that the mixing degree of bone cement fluctuates greatly in existing mixing methods, and insufficient mixing degree leads to inadequate reaction of bone cement, resulting in insufficient strength of the cured bone cement; another purpose of this application is to provide a bone cement mixing equipment; a third purpose of this application is to provide a bone cement mixing system; a fourth purpose of this application is to provide a method for mixing and injecting bone cement.

[0005] Technical solution: A bone cement mixing device according to an embodiment of this application includes: A housing defining an inner cavity for receiving bone cement components; A stirring section is disposed in the inner cavity; A driving unit is used to drive the stirring unit to perform a first motion and a second motion simultaneously to stir the bone cement components and prepare a bone cement mixture. The first motion is the rotation of the stirring part around the rotation axis, and the second motion is the movement of the stirring part along the direction of the rotation axis.

[0006] In some embodiments, the housing includes: A shell body, the shell body surrounding the forming of the inner cavity; A first end cap is disposed at one end of the shell body, and the first end cap is provided with an assembly channel, which communicates with the inner cavity. The drive unit is inserted into the assembly channel and threadedly connected to the first end cap, so that when the drive unit receives a rotational driving force, the drive unit can rotate relative to the first end cap around the rotation axis of the drive unit and move synchronously along the direction of the rotation axis, so that the stirring unit performs the first movement and the second movement synchronously.

[0007] In some embodiments, the drive unit is provided with an external thread, the first end cap is provided with an internal thread, the internal thread is arranged around the assembly channel, the drive unit passes through the assembly channel, and the external thread is connected to the internal thread; When the drive unit receives a rotational driving force, the external thread can rotate relative to the internal thread around the rotation axis and move synchronously along the direction of the rotation axis, so that the drive unit drives the stirring unit to perform the first movement and the second movement synchronously.

[0008] In some embodiments, the first end cap includes a cap body and two side wings, the cap body is connected to the shell body, the assembly channel is disposed through the cap body, and the side wings are symmetrically disposed on both sides of the cap body.

[0009] In some embodiments, the bone cement mixing device further includes a dispensing section disposed in the inner cavity and connected to the driving section; The housing has a first end and a second end that are disposed opposite to each other in the direction of the rotation axis, the first end cap is located at the first end, and an injection port communicating with the inner cavity is provided at the second end; When the drive unit receives a rotational driving force, the drive unit can drive the injection unit to move along the direction of the rotation axis, so as to inject the bone cement mixture in the cavity into the bone through the injection port.

[0010] In some embodiments, the injection portion is disposed at one end of the drive portion and connected between the drive portion and the stirring portion; When the driving unit receives a rotational driving force, the driving unit can drive the injection unit to rotate around the rotation axis and move synchronously along the direction of the rotation axis, so as to drive the stirring unit to perform the first movement and the second movement synchronously.

[0011] In some embodiments, the drive portion is disposed through the injection portion; The stirring section is located on the side of the injection section away from the first end cap and is installed at one end of the drive section.

[0012] In some embodiments, the injection portion is spaced apart from the inner wall of the housing, the injection portion is provided with an assembly groove along its circumference, and a sealing element is provided in the assembly groove, the sealing element forming a seal between the injection portion and the inner wall.

[0013] In some embodiments, the shell body is provided with a feed inlet communicating with the inner cavity; The housing further includes a second end cap disposed opposite to the first end cap in the direction of the rotation axis, the injection port being disposed on the second end cap, the second end cap being movably connected to the housing body, and the second end cap being movable relative to the housing body between a first position and a second position; In the first position, the second end cap opens the feed port so that the bone cement component can be fed into the inner cavity through the feed port; In the second position, the second end cap closes the feed inlet.

[0014] In some embodiments, the drive unit is provided with a transmission joint located outside the housing. The transmission joint is used to transmit the received driving force to the drive unit so that the drive unit can drive the stirring unit to perform the first movement and the second movement synchronously.

[0015] The bone cement mixing device described in this application includes: A housing defining an inner cavity for receiving bone cement components; A stirring section is disposed in the inner cavity; A drive unit is used to drive the stirring unit to perform a first movement and a second movement to stir the bone cement components and prepare a bone cement mixture; The first motion is the rotation of the stirring part around the rotation axis, and the second motion is the movement of the stirring part along the direction of the rotation axis.

[0016] In some embodiments, the drive unit includes: A first drive shaft, wherein the stirring part is mounted on one end of the first drive shaft; A rolling bearing, wherein the rolling bearing is sleeved on the outer periphery of the first drive shaft; The second drive shaft is sleeved on the outer periphery of the rolling bearing and is connected to the first drive shaft through the rolling bearing; When the first drive shaft receives a rotational driving force, the first drive shaft can drive the stirring part to perform the first movement; When the second drive shaft receives a rotational driving force, the second drive shaft can drive the first drive shaft to move along the rotation axis of the second drive shaft, so as to drive the stirring part to perform the second movement.

[0017] In some embodiments, the housing includes: A shell body, the shell body surrounding the forming of the inner cavity; A first end cap is disposed at one end of the shell body, and the first end cap is provided with an assembly channel, which communicates with the inner cavity. The second drive shaft passes through the assembly channel and is threadedly connected to the first end cap, so that when the second drive shaft receives a rotational driving force, the second drive shaft can rotate relative to the first end cap around the rotation axis and move along the direction of the rotation axis, thereby driving the first drive shaft to move along the direction of the rotation axis, and thus driving the stirring part to perform the second movement.

[0018] In some embodiments, the second drive shaft is provided with an external thread, the first end cap is provided with an internal thread, the internal thread is arranged around the assembly channel, the second drive shaft passes through the assembly channel, and the external thread is connected to the internal thread; When the second drive shaft receives a rotational driving force, the external thread can rotate relative to the internal thread around the rotation axis and move synchronously along the direction of the rotation axis, so that the second drive shaft drives the first drive shaft to move along the direction of the rotation axis, thereby driving the stirring part to perform the second movement.

[0019] In some embodiments, the first end cap includes a cap body and two side wings, the cap body is connected to the shell body, the assembly channel is disposed through the cap body, and the side wings are symmetrically disposed on both sides of the cap body.

[0020] In some embodiments, the bone cement mixing device further includes a dispensing section disposed in the inner cavity and connected to the driving section; The housing has a first end and a second end that are disposed opposite to each other in the direction of the rotation axis, the first end cap is located at the first end, and an injection port communicating with the inner cavity is provided at the second end; When the second drive shaft receives the driving force of rotation, the second drive shaft can drive the injection part to move along the direction of the rotation axis, so as to inject the bone cement mixture in the cavity into the bone through the injection port.

[0021] In some embodiments, the injection portion is spaced apart from the inner wall of the housing, the injection portion is provided with an assembly groove along its circumference, and a sealing element is provided in the assembly groove, the sealing element forming a seal between the injection portion and the inner wall.

[0022] In some embodiments, the shell body is provided with a feed inlet communicating with the inner cavity; The housing further includes a second end cap disposed opposite to the first end cap in the direction of the rotation axis, the injection port being disposed on the second end cap, the second end cap being movably connected to the housing body, and the second end cap being movable relative to the housing body between a first position and a second position; In the first position, the second end cap opens the feed port so that the bone cement component can be fed into the inner cavity through the feed port; In the second position, the second end cap closes the feed inlet.

[0023] Accordingly, the bone cement mixing equipment described in this application embodiment includes: A power unit for providing a driving force for rotation about a rotation axis; A limiting device is provided on one side of the power device in the direction of the rotation axis, and the limiting device is used to limit the direction of the driving force and in the direction along the rotation axis.

[0024] In some embodiments, the power unit includes a power output shaft having a receiving cavity extending axially thereon, the receiving cavity being capable of accommodating a drive joint of a bone cement mixing device. The shape of the receiving cavity is adapted to the shape of the transmission joint so that the power output shaft can move synchronously along the axial direction of the receiving cavity when driving the transmission joint to rotate.

[0025] In some embodiments, the limiting device includes: The base is provided with a limiting cavity and a slider channel, the slider channel is connected to the limiting cavity, and the limiting cavity is used to limit the direction of the driving force; A limiting slider, which can be inserted into the limiting cavity from the slider channel to limit movement in the direction of the rotation axis.

[0026] In some embodiments, the limiting cavity includes a main cavity and two side cavities that are interconnected, the side cavities being symmetrically disposed on both sides of the main cavity.

[0027] Accordingly, the bone cement mixing system described in this application embodiment includes: The bone cement mixing apparatus in any of the above embodiments, and, A power unit is provided to drive the drive unit so that the drive unit drives the stirring unit to simultaneously perform the first motion and the second motion. A limiting device is used to limit the housing in the movement directions of the first movement and the second movement.

[0028] In some embodiments, the power unit includes a power output shaft, the power output shaft having a receiving cavity extending axially therein for accommodating a transmission joint of the drive unit; The transmission joint is adapted to the shape of the receiving cavity so that the power output shaft can move synchronously along the axial direction of the receiving cavity when driving the drive unit to rotate.

[0029] In some embodiments, the limiting device includes: The base has a limiting cavity and a slider channel, the slider channel being connected to the limiting cavity; the housing can be inserted into the limiting cavity to limit the housing in the direction of the first movement through the limiting cavity; A limiting slider is provided, which can be inserted into the limiting cavity through the slider channel to limit the housing in the direction of the second movement.

[0030] In some embodiments, the limiting cavity includes a main cavity and two side cavities that are interconnected, the side cavities being symmetrically disposed on both sides of the main cavity; When the housing is inserted into the limiting cavity, the cover body of the housing is located in the main cavity, and the side wings of the housing are located in the side cavity.

[0031] Accordingly, the stirring and injection method described in the embodiments of this application includes: Bone cement components are received through the inner cavity of the shell of the bone cement mixing device; The drive unit of the bone cement mixing device is driven by a power unit, so that the drive unit drives the mixing unit to perform a first movement and a second movement simultaneously to stir the bone cement components and prepare a bone cement mixture; wherein, the first movement is the rotation of the mixing unit around the rotation axis, and the second movement is the movement of the mixing unit along the direction of the rotation axis; The drive unit is driven by the power device, which in turn drives the injection unit to move along the direction of the rotation axis, so as to inject the bone cement mixture in the cavity into the bone through the injection port.

[0032] Beneficial Effects: Compared with the prior art, the bone cement mixing device of this application includes: a shell defining an inner cavity for receiving bone cement components; a mixing unit disposed in the inner cavity; and a driving unit for driving the mixing unit to simultaneously perform a first motion and a second motion to mix the bone cement components and prepare a bone cement mixture; wherein the first motion is the rotation of the mixing unit around a rotation axis, and the second motion is the movement of the mixing unit along the direction of the rotation axis. The mixing unit of this bone cement mixing device can rotate around the rotation axis in the inner cavity and move synchronously along the rotation axis under the drive of the driving unit, thereby simultaneously mixing the bone cement components in the inner cavity in both the rotational and movement directions, improving mixing efficiency, enhancing the degree of mixing, ensuring sufficient bone cement reaction, and guaranteeing the strength of the cured bone cement.

[0033] Compared with the prior art, the bone cement mixing equipment of this application embodiment includes a power unit and a limiting device. The power unit is used to provide a driving force for rotation around a rotation axis; the limiting device is disposed on one side of the power unit in the direction of the rotation axis, and the limiting device is used to limit the movement in the direction of the driving force and in the direction along the rotation axis. This bone cement mixing equipment, by providing a driving force with a power unit and limiting the movement in the direction of the driving force and in the direction of the rotation axis, can be applied to the bone cement mixing device of this application embodiment, realizing fully automatic mixing in two dimensions. On the one hand, it can improve the mixing efficiency, enhance the mixing degree, ensure sufficient reaction of bone cement, and guarantee the strength of bone cement after curing; on the other hand, it can reduce the manpower required and reduce the harm to the human body during the bone cement preparation process.

[0034] Compared with the prior art, the bone cement mixing system of this application embodiment includes: the aforementioned bone cement mixing device, a power device for driving the driving unit so that the driving unit drives the mixing unit to simultaneously perform a first movement and a second movement; and a limiting device for limiting the housing in the movement directions of the first movement and the second movement. This bone cement mixing system, by setting up a power device and a limiting device, utilizes the power device to provide power for automatic mixing of the bone cement mixing device, and uses the limiting device to limit the housing of the bone cement mixing device during mixing. This reduces the impact of manual mixing on the degree of mixing and also reduces the impact of toxic gases generated by the reaction of bone cement components on the human body. Furthermore, by replacing the bone cement mixing device, it can be used as a disposable consumable, while the power device and the limiting device can be reused, reducing surgical costs and improving surgical efficiency and effectiveness.

[0035] Compared with the prior art, the stirring and injection method of this application embodiment receives bone cement components through the inner cavity of the shell of the bone cement stirring device; a power device drives the drive unit of the bone cement stirring device to simultaneously drive the stirring unit to perform a first motion and a second motion to stir the bone cement components and prepare a bone cement mixture; wherein, the first motion is the rotation of the stirring unit around the rotation axis, and the second motion is the movement of the stirring unit along the direction of the rotation axis; the power device drives the drive unit to drive the injection unit to move along the direction of the rotation axis to inject the bone cement mixture in the inner cavity into the bone through the injection port. On the one hand, this method can realize the stirring and injection of bone cement in the same device, reduce the steps of transferring bone cement, thereby reducing bone cement waste and toxic gas emissions caused by the bone cement transfer process, reducing surgical costs, and protecting the health of personnel; on the other hand, this method can improve the mixing degree of stirring, enhance the performance of bone cement, and reduce manpower. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the bone cement mixing device according to the first embodiment of this application; Figure 2 yes Figure 1 A schematic diagram of the medium-strength cement mixing device cut along the rotation axis AA'; Figure 3 yes Figure 2 A magnified structural diagram of region B in the middle; Figure 4 This is another cross-sectional view of the bone cement mixing device according to the first embodiment of this application; Figure 5 yes Figure 1 A bottom view of the structure of a medium-strength cement mixing unit; Figure 6 This is a schematic diagram of the structure of the bone cement mixing device according to the second embodiment of this application; Figure 7 This is a schematic diagram of the structure of the bone cement mixing equipment according to an embodiment of this application; Figure 8 yes Figure 7 A top view of the power output shaft of a medium-strength cement mixing plant; Figure 9 This is a schematic diagram of the structure of the bone cement mixing system according to an embodiment of this application; Figure 10 This is a partial structural schematic diagram of the bone cement mixing system according to an embodiment of this application, cut along the rotation axis AA'. Figure 11 This is a partial top view of the bone cement mixing system according to an embodiment of this application; Reference numerals: 10-Bone cement mixing device; 100-Shell; 101-Inner cavity; 102-First end; 103-Second end; 104-Injection port; 105-Inner wall; 106-Shell body; 1061-Feed inlet; 107-Second end cap; 108-First end cap; 1081-Cap body; 1082-Side wing; 1083-Assembly channel; 110-Drive unit; 1101-First drive shaft; 1102-Rolling bearing; 1103- Second drive shaft; 111-Pushing part; 112-Transmission joint; 113-Seal; 114-Gap; 120-Mixing part; 121-Connecting part; 20-Bone cement mixing equipment; 210-Power unit; 211-Power output shaft; 2111-Receiving cavity; 220-Limiting device; 221-Base; 222-Limiting cavity; 2221-Main cavity; 2222-Side cavity; 223-Limiting slider; 200-Outer shell; AA'-Rotation axis. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified.

[0040] The applicant notes that in existing technologies, most bone cement mixing methods involve manually stirring or shaking the cement in a mixing container with a stirring rod before transferring it to an injection device for subsequent injection. Firstly, this method exposes operators to toxic fumes, which is detrimental to human health. Secondly, the degree of mixing is greatly influenced by the operator; insufficient mixing strength by some individuals leads to incomplete reaction of the bone cement, resulting in low mixing efficiency and insufficient strength of the cured bone cement. Furthermore, the process of transferring bone cement during surgery is inconvenient; improper operation can easily cause leakage and waste of bone cement, affecting the surgical procedure.

[0041] In addition, a small number of methods employ electrically driven bone cement mixing, using a motor-driven stirring paddle to simultaneously deliver the bone cement to a syringe for injection. While this approach solves some problems, it still has several drawbacks. First, the mixing injection container and the electric drive device cannot be disassembled, resulting in high costs, and the electric drive device cannot be reused. Second, this method uses rotary stirring followed by directional delivery of bone cement, controlling the mixing and delivery switches through stroke differentials, which is structurally complex. This may lead to some bone cement being transferred to the syringe unmixed, resulting in insufficient bone cement strength and affecting surgical outcomes. Furthermore, because the bone cement mixing injection container and syringe are divided into two chambers, each with dead space, significant bone cement waste occurs.

[0042] In view of the above, embodiments of this application disclose a bone cement mixing apparatus, equipment, system and method, which aim to overcome at least one of the above-mentioned technical problems.

[0043] First, the bone cement mixing apparatus 10 according to an embodiment of this application will be described. Please refer to [the relevant documentation / reference]. Figure 1 and Figure 2 , Figure 1 The structure of the bone cement mixing device according to the first embodiment of this application is illustrated. Figure 2 It indicated Figure 1 The structure of the bone cement mixing device is shown in section along the rotation axis AA'. As can be seen, in the first embodiment, the bone cement mixing device 10 mainly includes a housing 100, a drive unit 110, and a mixing unit 120.

[0044] The shell 100 defines an inner cavity 101 for receiving bone cement components, that is, the interior of the shell 100 has a receiving space for receiving bone cement components.

[0045] A stirring section 120 is disposed in the inner cavity 101. The stirring section 120 is used to stir the bone cement components to prepare a bone cement mixture. Specifically, in the first embodiment, the drive unit 110 is used to drive the stirring unit 120 to perform a first movement and a second movement simultaneously to stir the bone cement components and prepare a bone cement mixture; wherein, the first movement is the stirring unit 120 rotating around the rotation axis AA', and the second movement is the stirring unit 120 moving along the direction of the rotation axis AA'.

[0046] Understandably, the stirring part 120 of the bone cement stirring device 10 can rotate around the rotation axis AA' in the inner cavity 101 and move synchronously along the rotation axis AA' under the drive of the drive part 110. This allows the bone cement components in the inner cavity 101 to be stirred synchronously in both the rotation direction and the movement direction, thereby improving the stirring efficiency, enhancing the mixing degree, ensuring sufficient bone cement reaction, and guaranteeing the strength of the cured bone cement.

[0047] Please refer to it again. Figure 2 In some embodiments, the housing 100 includes a housing body 106 and a first end cap 108. The housing body 106 surrounds to form an inner cavity 101. The first end cap 108 is disposed at one end of the housing body 106 and has an assembly channel 1083 that communicates with the inner cavity 101.

[0048] The shell body 106 and the first end cap 108 can be an integral structure, meaning they can be molded as a single piece, or they can be separate structures, where the shell body 106 and the first end cap 108 can be fabricated separately and then assembled to form the shell 100. To facilitate the assembly of the shell 100 with the drive unit 110 and the stirring unit 120, this embodiment preferably uses a separate structure for the shell 100, meaning the shell body 106 and the first end cap 108 are independent of each other and can be connected by threads, snap-fits, or other means.

[0049] In the first embodiment, the drive unit 110 passes through the assembly channel 1083 and is threadedly connected to the first end cover 108. Utilizing the characteristic that the thread can rotate while also feeding along the rotation axis AA', when the drive unit 110 receives the rotational driving force, the drive unit 110 can rotate relative to the first end cover 108 around the rotation axis AA' of the drive unit 110 and move synchronously along the direction of the rotation axis AA', so that the stirring unit 120 can perform the first movement and the second movement synchronously.

[0050] The stirring unit 120 achieves simultaneous movement in two directions—first and second—through a threaded connection, thereby realizing two-dimensional stirring. It has a simple structure, low manufacturing cost, and is suitable for use as a medical consumable.

[0051] Specifically, in the first embodiment, the drive unit 110 is provided with an external thread, and the first end cover 108 is provided with an internal thread. The internal thread is arranged around the assembly channel 1083, and the drive unit 110 passes through the assembly channel 1083, with the external thread connected to the internal thread. When the drive unit 110 receives a rotational driving force, the external thread can rotate relative to the internal thread around the rotation axis AA' and move synchronously along the direction of the rotation axis AA', so that the drive unit 110 drives the stirring unit 120 to perform the first movement and the second movement synchronously.

[0052] Optionally, in some embodiments, although not illustrated, an external thread can be provided on the first end cap 108 and an internal thread can be provided on the drive part 110. By matching and connecting the external thread and the internal thread, the above-mentioned stirring in two directional dimensions can also be achieved. Specifically, a tubular structure can be integrally formed on the first end cap 108. The internal pipe of the tubular structure forms an assembly channel 1083 that connects to the inner cavity 101. The outer surface of the tubular structure is provided with external threads. Correspondingly, the drive unit 110 includes a drive rod and a sleeve. The drive rod is movably inserted into the assembly channel 1083, and the sleeve is fitted around the outer periphery of the drive rod. One end of the sleeve is fixedly connected to the drive rod, and the remaining part of the sleeve has a space between it and the surface of the drive rod for the tubular structure to be inserted. The inner surface of the sleeve is provided with internal threads. Thus, by threading the sleeve to the tubular structure, the drive unit 110 and the first end cap 108 can be threaded together. This allows the external thread to rotate relative to the internal thread around the rotation axis AA' and move synchronously along the direction of the rotation axis AA' when the drive unit 110 receives a rotational driving force, so that the drive unit 110 drives the stirring unit 120 to perform the first and second movements synchronously.

[0053] Furthermore, in the first embodiment, the bone cement mixing device 10 further includes a dispensing section 111, which is disposed in the inner cavity 101 and connected to the driving section 110; the dispensing section 111 is used to directly inject the bone cement mixture in the inner cavity 101 into the bone. The housing 100 has a first end 102 and a second end 103 disposed opposite to each other in the direction of the rotation axis AA', a first end cap 108 is located at the first end 102, and an injection port 104 communicating with the inner cavity 101 is provided at the second end 103; when the driving section 110 receives the rotational driving force, the driving section 110 can drive the dispensing section 111 to move along the direction of the rotation axis AA', so as to inject the bone cement mixture in the inner cavity 101 into the bone from the injection port 104. By setting up the injection unit 111 and driving the injection unit 110 to drive the injection unit 111, the bone cement mixture can be injected into the bone cement mixing device 10. This allows the preparation and injection of the bone cement mixture to be carried out in the same chamber, eliminating the need to transfer the prepared bone cement mixture. This reduces the leakage of toxic gas during the transfer process, reduces the dead space, and avoids the waste of the bone cement mixture.

[0054] Please refer to the following for details. Figure 2 and Figure 3 , Figure 3 It indicated Figure 2 The enlarged structure of region B; in some embodiments, the injection section 111 is disposed at one end of the drive section 110, that is, at one end of the drive section 110 located in the inner cavity 101, and the injection section 111 is connected between the drive section 110 and the stirring section 120. When the drive section 110 receives a rotational driving force, the drive section 110 can drive the injection section 111 to rotate around the rotation axis AA' and move synchronously along the direction of the rotation axis AA', so as to drive the stirring section 120 to perform the first movement and the second movement synchronously. It can be understood that the injection section 111 forms a piston structure in the inner cavity 101. By driving the injection section 111 to move along the direction of the rotation axis AA' through the drive section 110, the injection section 111 can push the bone cement mixture in the inner cavity 101 out of the injection port 104.

[0055] Furthermore, an installation groove can be provided on the side of the injection section 111 near the injection port 104, and a connector 121 can be installed in the installation groove to connect the stirring section 120 to the injection section 111. In this embodiment, the connector 121 is threadedly connected to the installation groove, and the stirring section 120 is inserted into the connector 121.

[0056] Understandably, during injection, as the injection unit 111 moves, the mixing unit 120 is also compressed, thereby pushing out the bone cement mixture from the inner cavity 101. Therefore, the mixing unit 120 can be configured as an elastic compressible structure, for example, it can be configured as a spiral spring-like structure, or it can be made of a flexible compressible material; no particular limitation is made here.

[0057] For details, please refer to Figure 4 , Figure 4 The diagram illustrates another cross-sectional structure of the bone cement mixing device 10 according to the first embodiment of this application. In this cross-sectional structure, the drive unit 110 is disposed through the injection unit 111, and the mixing unit 120 is located on the side of the injection unit 111 away from the first end cap 108. The mixing unit 120 is directly installed at one end of the drive unit 110.

[0058] Please refer to it again. Figure 3 In some embodiments, the injection portion 111 is spaced apart from the inner wall 105 of the housing 100. The injection portion 111 has an assembly groove 115 along its circumference, and a sealing element 113 is provided in the assembly groove 115, forming a seal between the injection portion 111 and the inner wall 105. By spaced apart from the inner wall 105 of the housing 100, a gap 114 is formed between them, which effectively avoids the defects of high friction and difficulty in relative movement caused by direct contact between the injection portion 111 and the inner wall 105. By providing the sealing element 113 to seal the injection portion 111 and the inner wall 105, friction is reduced, and stirring and injection efficiency is improved. It can be understood that since the sealing element 113 is provided in the assembly groove 115 provided on the circumferential side of the injection portion 111, the contact area between the sealing element 113 and the inner wall 105 is smaller than the circumferential side area of ​​the injection portion 111, thus the friction with the inner wall 105 is greatly reduced.

[0059] Please refer to it again. Figure 1 , Figure 2In the first embodiment, the shell body 106 is further provided with a feed port 1061 communicating with the inner cavity 101; the bone cement component can be injected into the inner cavity 101 through the feed port 1061. The shell 100 also includes a second end cap 107 disposed opposite to the first end cap 108 in the direction of the rotation axis AA', an injection port 104 is disposed on the second end cap 107, and the second end cap 107 is movably connected to the shell body 106, so that the second end cap 107 can move relative to the shell body 106 between a first position and a second position; wherein, in the first position, the second end cap 107 opens the feed port 1061 so that the bone cement component can be fed into the inner cavity 101 through the feed port 1061; in the second position, the second end cap 107 closes the feed port 1061. By setting the second end cap 107, the second end cap 107 can be opened to inject bone cement components into the inner cavity 101, or the second end cap 107 can be closed for stirring and injection. In terms of use, the structure is simple, the manufacturing cost is low, and it is suitable for the application of medical device consumables.

[0060] Please refer to it again. Figure 1 and Figure 2 In the first embodiment, the drive unit 110 is provided with a transmission joint 112, which is located outside the housing 100. The transmission joint 112 is used to transmit the received driving force to the drive unit 110 so that the drive unit 110 can drive the stirring unit 120 to perform the first movement and the second movement simultaneously.

[0061] By providing a transmission joint 112 on the drive unit 110 of the bone cement mixing device 10, it can be used to cooperate with the power unit 210 of the bone cement mixing equipment 20, so that the power unit 210 provides a rotational driving force to the drive unit 110, so that the mixing unit 120 can perform the first movement and the second movement simultaneously, thereby realizing automatic mixing and injection.

[0062] For further details, please refer to Figure 5 , Figure 5 It indicated Figure 1 From the bottom view of the bone cement mixing device 10 of the first embodiment, it can be seen that in the first embodiment, the first end cap 108 may include a cap body 1081 and two side wings 1082. The cap body 1081 is connected to the shell body 106. The assembly channel 1083 is disposed through the cap body 1081. The side wings 1082 are symmetrically disposed on both sides of the cap body 1081.

[0063] By providing two side wings 1082 on the first end cap 108 of the housing 100 of the bone cement mixing device 10, it can be used to cooperate with the limiting device 220 of the bone cement mixing equipment 20 to limit the housing 100 in the movement direction of the first movement and the second movement during automatic mixing and injection.

[0064] Of course, in some embodiments, the bone cement mixing device 10 may selectively be equipped with the above-mentioned functions. For example, the bone cement mixing device 10 may include a housing 100, a mixing part 120, a driving part 110, and a dispensing part 111. The housing 100 defines an inner cavity 101 for receiving bone cement components; the mixing part 120 is disposed in the inner cavity 101; the driving part 110 is used to drive the mixing part 120 to simultaneously perform a first movement and a second movement to mix the bone cement components and prepare a bone cement mixture; wherein, the first movement is the rotation of the mixing part 120 around a rotation axis, and the second movement is the movement of the mixing part 120 along the direction of the rotation axis. The housing 100 includes a housing body 106 and a first end cap 108. The housing body 106 forms an inner cavity 101. The first end cap 108 is disposed at one end of the housing body 106 and has an assembly channel 1083 that communicates with the inner cavity 101. The drive unit 110 passes through the assembly channel 1083 and is threadedly connected to the first end cap 108, so that when the drive unit 110 receives a rotational driving force, the drive unit 110 can rotate relative to the first end cap 108 around the rotation axis of the drive unit 110 and move synchronously along the direction of the rotation axis, so that the stirring unit 120 performs a first movement and a second movement synchronously. The injection unit 111 is disposed in the inner cavity 101 and connected to the drive unit 110; the housing 100 has a first end 102 and a second end 103 disposed opposite to each other in the direction of the rotation axis, the first end cap 108 is located at the first end 102, and the second end 103 is provided with an injection port 104 communicating with the inner cavity 101; when the drive unit 110 receives the rotation driving force, the drive unit 110 can drive the injection unit 111 to move along the direction of the rotation axis so as to inject the bone cement mixture in the inner cavity 101 into the bone through the injection port 104.

[0065] Understandably, the stirring unit 120 of the bone cement mixing device 10, driven by the drive unit 110, can rotate around the rotation axis AA' in the inner cavity 101 and move synchronously along the rotation axis AA'. This allows for simultaneous stirring of the bone cement components in the inner cavity 101 in both the rotational and movement directions, improving stirring efficiency, enhancing mixing, ensuring sufficient bone cement reaction, and guaranteeing the strength of the cured bone cement. By providing the injection unit 111 and driving it with the drive unit 110, the bone cement mixture can be injected into the bone cement mixing device 10. This allows for the preparation and injection of the bone cement mixture within the same chamber, eliminating the need to transfer the prepared bone cement mixture, reducing toxic gas leakage during transfer, minimizing dead space, and avoiding waste of the bone cement mixture.

[0066] Please see Figure 6 , Figure 6The structure of the bone cement mixing device according to the second embodiment of this application is illustrated. Similar to the first embodiment, in the second embodiment, the bone cement mixing device 10 mainly includes a housing 100, a drive unit 110, and a mixing unit 120. The housing 100 defines an inner cavity 101 for receiving bone cement components; that is, the interior of the housing 100 has a receiving space for receiving bone cement components. The mixing unit 120 is disposed in the inner cavity 101 and is used to mix the bone cement components to prepare a bone cement mixture. In particular, unlike the first embodiment, in the second embodiment, the driving unit 110 is used to drive the stirring unit 120 to perform a first movement and a second movement to stir the bone cement components and prepare a bone cement mixture; wherein, the first movement is the stirring unit 120 rotating around the rotation axis AA', and the second movement is the stirring unit 120 moving along the direction of the rotation axis AA'.

[0067] Specifically, in the second embodiment, the drive unit 110 includes a first drive shaft 1101, a rolling bearing 1102, and a second drive shaft 1103. The stirring unit 120 is installed at one end of the first drive shaft 1101. The rolling bearing 1102 is sleeved on the outer periphery of the first drive shaft 1101, and the second drive shaft 1103 is sleeved on the outer periphery of the rolling bearing 1102 and connected to the first drive shaft 1101 through the rolling bearing 1102. That is, the first drive shaft 1101 is directly connected to the stirring unit 120, and the second drive shaft 1103 has a hollow structure. The first drive shaft 1101 passes through the second drive shaft 1103 and is connected to the second drive shaft 1103 through the rolling bearing 1102. When the first drive shaft 1101 receives a rotational driving force, the first drive shaft 1101 can drive the stirring part 120 to perform a first movement. When the second drive shaft 1103 receives a rotational driving force, the second drive shaft 1103 can drive the first drive shaft 1101 to move along the rotation axis AA' of the second drive shaft 1103 through the rolling bearing 1102, so as to drive the stirring part 120 to perform a second movement.

[0068] It is understood that in the second embodiment, rotational driving forces can be applied simultaneously to the first drive shaft 1101 and the second drive shaft 1103, so that the stirring unit 120 can perform the first movement and the second movement simultaneously. Alternatively, rotational driving forces can be applied sequentially to the first drive shaft 1101 and the second drive shaft 1103, so that the stirring unit 120 performs the first movement and the second movement sequentially. That is to say, in the second embodiment, unlike the first embodiment, the first movement and the second movement can be performed simultaneously or sequentially, but both can achieve stirring in two directional dimensions, improve the stirring intensity, make the bone cement components more uniformly mixed, and improve the performance of the bone cement mixture.

[0069] Furthermore, in the second embodiment, the housing 100 includes a housing body 106 and a first end cap 108. The housing body 106 surrounds to form an inner cavity 101. The first end cap 108 is disposed at one end of the housing body 106 and has an assembly channel 1083 that communicates with the inner cavity 101.

[0070] The shell body 106 and the first end cap 108 can be an integral structure, meaning they can be molded as a single piece, or they can be separate structures, where the shell body 106 and the first end cap 108 can be fabricated separately and then assembled to form the shell 100. To facilitate assembly of the shell 100 with the drive unit 110 and the stirring unit 120, this embodiment preferably uses a separate structure for the shell 100, meaning the shell body 106 and the first end cap 108 are independent of each other and can be connected by threads, snap-fits, or other means.

[0071] In the second embodiment, the second drive shaft 1103 passes through the assembly channel 1083 and is threadedly connected to the first end cover 108, so that when the second drive shaft 1103 receives the rotational driving force, the second drive shaft 1103 can rotate relative to the first end cover 108 around the rotation axis AA' and move in the direction of the rotation axis AA', thereby driving the first drive shaft 1101 to move in the direction of the rotation axis AA', and thus driving the stirring part to perform the second movement.

[0072] By setting the connection to a threaded manner, the components can be made interchangeable with those in the first embodiment. Only the structure of the drive unit 110 needs to be replaced to produce two different types of consumables, which can save production line space and reduce processing and manufacturing costs.

[0073] Specifically, in the second embodiment, the second drive shaft 1103 is provided with an external thread, and the first end cover 108 is provided with an internal thread. The internal thread is arranged around the assembly channel 1083. The second drive shaft 1103 passes through the assembly channel 1083, and the external thread is connected to the internal thread. When the second drive shaft 1103 receives the rotational driving force, the external thread can rotate relative to the internal thread around the rotation axis AA' and move synchronously along the direction of the rotation axis AA', so that the second drive shaft 1103 drives the first drive shaft 1101 to move along the direction of the rotation axis AA', thereby driving the stirring part 120 to perform the second movement.

[0074] Optionally, in some embodiments, although not illustrated, an external thread can be provided on the first end cap 108 and an internal thread on the second drive shaft 1103. The external and internal threads can be matched and connected to achieve the effect of driving the stirring unit 120 to perform a second movement. Specifically, a tubular structure can be integrally provided on the first end cap 108. The internal pipe of this tubular structure forms an assembly channel 1083 communicating with the inner cavity 101. An external thread is provided on the outer surface of the tubular structure. Correspondingly, the second drive shaft 1103 includes a drive rod and a sleeve. The drive rod is movably inserted into the assembly channel 1083, and the sleeve is fitted around the outer periphery of the drive rod. One end of the sleeve is fixedly connected to the drive rod, and the remaining part of the sleeve has space between itself and the surface of the drive rod for the insertion of the tubular structure. The inner surface of the sleeve is provided with an internal thread, so that the second drive shaft 1103 and the first end cover 108 can be threadedly connected to the tubular structure by the sleeve. In this way, when the second drive shaft 1103 receives the driving force of rotation, the external thread can rotate relative to the internal thread around the rotation axis AA' and move synchronously along the direction of the rotation axis AA'. The second drive shaft 1103 drives the first drive shaft 1101 to move along the direction of the rotation axis AA', thereby driving the stirring part 120 to perform a second movement.

[0075] Furthermore, in the second embodiment, the bone cement mixing device 10 further includes a pusher 111, which is disposed in the inner cavity 101 and connected to the drive unit 110; the housing 100 has a first end 102 and a second end 103 disposed opposite to each other in the direction of the rotation axis AA', the first end cap 108 is located at the first end 102, and the second end 103 is provided with an injection port 104 communicating with the inner cavity 101; when the second drive shaft 1103 receives the rotational driving force, the second drive shaft 1103 can drive the pusher 111 to move along the direction of the rotation axis AA', so as to inject the bone cement mixture in the inner cavity 101 into the bone through the injection port 104. Similarly, by setting up the injection unit 111 and using the second drive shaft 1103 to drive the injection unit 111, the bone cement mixture can be injected into the bone cement mixing device 10, thereby realizing the preparation and injection of the bone cement mixture in the same chamber, eliminating the need to transfer the prepared bone cement mixture, reducing the leakage of toxic gas during the transfer process, reducing the dead space, and avoiding the waste of bone cement mixture.

[0076] For details, please refer to the following document again. Figure 6In the second embodiment, the injection unit 111 can be installed at one end of the first drive shaft 1101, that is, at the end of the first drive shaft 1101 located in the inner cavity 101, and the injection unit 111 is connected between the first drive shaft 1101 and the stirring unit 120. When the second drive shaft 1103 receives the rotational driving force, the second drive shaft 1103 can drive the first drive shaft 1101 to move along the rotation axis AA', thereby driving the injection unit 111 to move along the rotation axis AA'. It can be understood that the injection unit 111 forms a piston structure in the inner cavity 101. Driven by the drive unit 110, the injection unit 111 moves along the rotation axis AA', and the injection unit 111 can push the bone cement mixture in the inner cavity 101 out of the injection port 104.

[0077] Furthermore, similar to the first embodiment, in the second embodiment, an installation groove can be provided on the side of the injection section 111 near the injection port 104, and a connector 121 can be installed in the installation groove to connect the stirring section 120 to the injection section 111. In this embodiment, the connector 121 is threadedly connected to the installation groove, and the stirring section 120 is inserted into the connector 121. Under the drive of the first drive shaft 1101, the injection section 111 can rotate around the rotation axis AA' to drive the stirring section 120 to rotate; under the drive of the first drive shaft 1101, the injection section 111 moves along the direction of the rotation axis AA', which can drive the stirring section 120 to move along the direction of the rotation axis, realizing stirring in two directional dimensions.

[0078] In the second embodiment, the injection part 111 can also be directly mounted on the second drive shaft 1103, so that when the second drive shaft 1103 receives the rotational driving force, it can drive the injection part 111 to move along the direction of the rotation axis AA'.

[0079] Furthermore, in the second embodiment, the drive unit 110 is provided with a transmission joint 112, which is located outside the housing 100. The transmission joint 112 is used to transmit the received driving force to the drive unit 110, so that the drive unit 110 can drive the stirring unit 120 to perform a first movement and a second movement. Specifically, two transmission joints 112 can be provided, respectively disposed on the first drive shaft 1101 and the second drive shaft 1103.

[0080] By providing a transmission joint 112 on the drive unit 110 of the bone cement mixing device 10, it can be used to cooperate with the power unit 210 of the bone cement mixing equipment 20, so that the power unit 210 provides a rotational driving force to the drive unit 110, causing the mixing unit 120 to perform a first movement and a second movement, thereby realizing automatic mixing and injection.

[0081] Furthermore, in the first embodiment, the first end cap 108 may include a cap body 1081 and two side wings 1082. The cap body 1081 is connected to the shell body 106, the assembly channel 1083 is disposed through the cap body 1081, and the side wings 1082 are symmetrically disposed on both sides of the cap body 1081.

[0082] By providing two side wings 1082 on the first end cap 108 of the housing 100 of the bone cement mixing device 10, it can be used to cooperate with the limiting device 220 of the bone cement mixing equipment 20 to limit the housing 100 in the movement direction of the first movement and the second movement during automatic mixing and injection.

[0083] Accordingly, this application embodiment also provides a bone cement mixing device 20, including a power unit 210 and a limiting device 220. The power unit 210 is used to provide a driving force for rotation about a rotation axis AA'. The limiting device 220 is disposed on one side of the power unit 210 in the direction of the rotation axis AA'. The limiting device 220 is used to limit the movement in the direction of the driving force and in the direction along the rotation axis AA'.

[0084] It is understood that the bone cement mixing equipment 20 provides driving force through the power unit 210 and limits the direction of the driving force and the direction of the rotation axis AA' through the limiting device 220. It can be applied to the bone cement mixing device 10 of the present application embodiment to realize fully automatic mixing in two dimensions. On the one hand, it can improve the mixing efficiency, enhance the mixing degree, make the bone cement react fully, and ensure the strength of the bone cement after curing. On the other hand, it can reduce the manpower required and reduce the harm to the human body during the bone cement preparation process.

[0085] Please see Figure 8 , Figure 8 The diagram illustrates a top view of the power output shaft 211 of the bone cement mixing device 20. In some embodiments, the power unit 210 includes a power output shaft 211, which has a receiving cavity 2111 extending along its axial direction. The receiving cavity 2111 can be used to receive the transmission joint 112 of the bone cement mixing device 10. The shape of the receiving cavity 2111 is adapted to the transmission joint 112 so that the power output shaft 211 can drive the transmission joint 112 to rotate synchronously along the axial direction of the receiving cavity 2111.

[0086] In use, by inserting the transmission joint 112 of the bone cement mixing device 10 into the receiving cavity 2111, the power output shaft 211 can provide a rotational driving force to the transmission joint 112, thereby enabling the drive unit 110 to rotate.

[0087] Specifically, the cross-sectional shapes of the transmission joint 112 and the receiving cavity 2111 are roughly the same, and can be polygonal or other structures that can transmit torque. It should be noted that the shapes of the two only need to be able to transmit torque during rotation, and are not limited to perfect geometric shapes or completely overlapping shapes.

[0088] Furthermore, the power unit 210 may also include a power supply, a controller, a motor, and other equipment, which can be housed inside the outer casing 200 of the bone cement mixing equipment 20. During use, the power supply provides power to the motor, driving the power output shaft 211 to rotate. The controller can control the motor's operation, thereby controlling the mixing and injection processes.

[0089] Please refer to the following: Figure 10 and Figure 11 The limiting device 220 of the bone cement mixing device 20 includes a base 221 and a limiting slider 223. The base 221 is provided with a limiting cavity 222 and a slider channel 224. The slider channel 224 communicates with the limiting cavity 222. The limiting cavity 222 is used to limit movement in the direction of the driving force. The limiting slider 223 can be inserted into the limiting cavity 222 from the slider channel 224 to limit movement in the direction of the rotation axis AA'. The limiting device 220 is also provided on the outer shell 200, and its base 221 is connected to the outer shell 200. Its limiting cavity and limiting slider 223 can cooperate with the first end cover 108 of the bone cement mixing device 10 to limit the movement of the shell 100 of the bone cement mixing device 10 in the first movement and second movement directions.

[0090] Specifically, the limiting cavity 222 includes a main cavity 2221 and two side cavities 2222 that are interconnected, with the side cavities 2222 symmetrically arranged on both sides of the main cavity 2221. By providing the main cavity 2221 and the two side cavities 2222, they can respectively cooperate with the cover body 1081 and the two side wings 1082 of the first end cover 108, thereby limiting the housing 100.

[0091] Accordingly, this application also provides a bone cement mixing system, which can be referred to in conjunction with the embodiments. Figure 9 , Figure 10 and Figure 11 , Figure 9 The diagram illustrates the structure of the bone cement mixing system according to an embodiment of this application. Figure 10 The illustration shows a partial structure of the bone cement mixing system according to an embodiment of this application, cut along the rotation axis AA'. Figure 11 The diagram illustrates a partial top view of the bone cement mixing system according to an embodiment of this application. In this embodiment, the bone cement mixing system includes a bone cement mixing device 10, a power device 210, and a limiting device 220.

[0092] The power unit 210 is used to drive the drive unit 110 so that the drive unit 110 drives the stirring unit 120 to perform the first movement and the second movement simultaneously, and the limiting device 220 is used to limit the shell 100 in the movement direction of the first movement and the second movement.

[0093] Understandably, this bone cement mixing system, by setting up a power unit 210 and a limiting device 220, uses the power unit 210 to provide power to achieve automatic mixing of the bone cement mixing device 10, and uses the limiting device 220 to limit the shell 100 of the bone cement mixing device 10 during mixing. On the one hand, it can reduce the impact of manual mixing on the degree of mixing, and on the other hand, it can reduce the impact of toxic gases generated by the reaction of bone cement components on the human body. Furthermore, by replacing the bone cement mixing device 10, the bone cement mixing device 10 can be used as a consumable for one-time use, while the power unit 210 and the limiting device 220 can be reused, reducing surgical costs and improving surgical efficiency and effectiveness.

[0094] Specifically, the power unit 210 includes a power output shaft 211, which has a receiving cavity 2111 extending axially therein for accommodating a transmission joint 112 of the drive unit 110. The transmission joint 112 is adapted to the shape of the receiving cavity 2111 so that the power output shaft 211 can drive the drive unit 110 to rotate synchronously along the axial direction of the receiving cavity 2111. In use, by inserting the transmission joint 112 of the bone cement mixing device 10 into the receiving cavity 2111, the power output shaft 211 can provide a rotational driving force to the transmission joint 112, thereby enabling the drive unit 110 to rotate.

[0095] Furthermore, the limiting device 220 includes a base 221 and a limiting slider 223. The base 221 is provided with a limiting cavity 222 and a slider channel 224, and the slider channel 224 communicates with the limiting cavity 222. The housing 100 can be inserted into the limiting cavity 222 to limit the housing 100 in the first movement direction. The limiting slider 223 can be inserted into the limiting cavity 222 from the slider channel 224 to limit the housing 100 in the second movement direction.

[0096] It should be noted that the limiting device 220 is used to limit the housing 100 of the bone cement mixing device 10 in the first and second movement directions, and does not need to completely lock the housing 100 in these two directions. That is to say, the first end cap 108 of the housing 100 can have a certain amount of room to move within the limiting device 220, and is not necessarily completely locked.

[0097] Specifically, the limiting cavity 222 includes a main cavity 2221 and two side cavities 2222 that are interconnected. The side cavities 2222 are symmetrically arranged on both sides of the main cavity 2221. When the housing 100 is inserted into the limiting cavity 222, the cover body 1081 of the housing 100 is located in the main cavity 2221, and the side wing portion 1082 of the housing 100 is located in the side cavity 2222.

[0098] Accordingly, embodiments of this application also provide a stirring and injection method, including: The inner cavity 101 of the shell 100 of the bone cement mixing device 10 receives bone cement components; The drive unit 110 of the bone cement mixing device 10 is driven by the power unit 210, which drives the mixing unit 120 to perform a first movement and a second movement simultaneously to mix the bone cement components and prepare a bone cement mixture; wherein, the first movement is the rotation of the mixing unit 120 around the rotation axis AA', and the second movement is the movement of the mixing unit 120 along the direction of the rotation axis AA'. The drive unit 110 is driven by the power device 210, which drives the injection unit 111 to move along the direction of the rotation axis AA', so as to inject the bone cement mixture in the inner cavity 101 into the bone through the injection port 104.

[0099] Specifically, in actual use, the bone cement mixing device 10 can be placed in the bone cement mixing equipment 20, so that the housing 100 passes through the limiting cavity 222 of the limiting device 220, the transmission joint 112 of the drive unit 110 is inserted into the receiving cavity 2111 of the power output shaft 211, and then the limiting slider 223 is inserted into the limiting cavity 222 from the slider channel 224.

[0100] Open the second end cap 107, put the bone cement components into the inner cavity 101 through the feed port 1061, and close the second end cap 107.

[0101] Then, through a pre-set control program, the power output shaft 211 of the power unit 210 is controlled to provide high-speed forward and reverse rotation power, so that the drive unit 110 rotates forward and reverse at high speed, driving the mixing unit 120 to rotate forward and reverse at high speed around the rotation axis AA', and to move back and forth along the direction of the rotation axis AA', so that the bone cement components are fully mixed and a bone cement mixture is prepared.

[0102] After mixing, the injection port 104 of the bone cement mixing device 10 is connected to inject relevant consumables (tweezers, metal fillers, etc.).

[0103] After a settling period, the power output shaft 211 of the power unit 210 is controlled by a preset control program to provide unidirectional low-speed rotational power, causing the drive unit 110 to rotate at low speed, which in turn drives the injection unit 111 to rotate and feed within the inner cavity 101. During the feeding process of the injection unit 111, the stirring unit 120 is compressed in contact with the second end cap 107, allowing the bone cement mixture in the inner cavity 101 to be injected into the bone.

[0104] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0105] The bone cement mixing apparatus, equipment, system, and method provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A bone cement mixing system, characterized in that, Includes a bone cement mixing device (10), said bone cement mixing device (10) comprising: A housing (100) defining an inner cavity (101) for receiving bone cement components; A stirring part (120) is disposed in the inner cavity (101). A drive unit (110) is connected to a transmission joint (112), which transmits the received driving force to the drive unit (110) so that the drive unit (110) can drive the stirring unit (120) to perform a first movement and a second movement simultaneously to stir the bone cement components and prepare a bone cement mixture; wherein, the first movement is the rotation of the stirring unit (120) around the rotation axis, and the second movement is the movement of the stirring unit (120) along the direction of the rotation axis; The bone cement mixing system also includes a power unit (210) and a limiting device (220), and the bone cement mixing device (10) is interchangeably coupled with the power unit (210) and the limiting device (220); The power unit (210) is used to drive the drive unit (110) so that the drive unit (110) drives the stirring unit (120) to perform the first movement and the second movement simultaneously, thereby realizing the automatic stirring of the bone cement components; the power unit (210) includes a power output shaft (211), which has a receiving cavity (2111) extending along its axial direction. The receiving cavity (2111) can be used to accommodate the transmission joint (112). The shape of the receiving cavity (2111) is adapted to the shape of the transmission joint (112), and the shape is configured to allow the power output shaft (2111) to transmit torque to the transmission joint (112); by inserting the transmission joint (112) into the receiving cavity (2111), the power output shaft (211) can provide a rotational driving force to the transmission joint (112) so that the transmission joint (112) moves synchronously along the axial direction of the receiving cavity (2111) when rotating; The limiting device (220) is used to limit the housing (100) in the direction of the first movement and the second movement. The limiting device (220) is disposed on one side of the power device (210) in the direction of the rotation axis. The limiting device (220) is used to limit the housing (100) in the direction of the rotation driving force and in the direction along the rotation axis. The limiting device (220) is provided with a limiting cavity (222). The limiting cavity (222) is configured to cooperate with the housing (100) when the housing (100) of the bone cement mixing device (10) is inserted into the limiting cavity (222) so as to limit the housing (100) in the direction along the rotation driving force through the limiting cavity (222).

2. The bone cement mixing system according to claim 1, characterized in that, The limiting device (220) includes: The base (221) is provided with a limiting cavity (222) and a slider channel (224), the slider channel (224) communicating with the limiting cavity (222); the housing (100) can be inserted into the limiting cavity (222) to limit the housing (100) in the direction of the first movement through the limiting cavity (222); A limiting slider (223) is inserted into the limiting cavity (222) from the slider channel (224) to limit the housing (100) in the direction of the second movement.

3. The bone cement mixing system according to claim 2, characterized in that, The limiting cavity (222) includes a main cavity (2221) and two side cavities (2222) that are interconnected, and the side cavities (2222) are symmetrically arranged on both sides of the main cavity (2221); The housing (100) includes a housing body (106) and a first end cap (108). The first end cap (108) is disposed at one end of the housing body (106). The first end cap (108) includes a cap body (1081) and a side wing (1082). When the housing (100) is inserted into the limiting cavity (222), the cap body (1081) is located in the main cavity (2221), and the side wing (1082) is located in the side cavity (2222).

4. The bone cement mixing system according to claim 1, characterized in that, The housing (100) includes: Shell body (106), the shell body (106) surrounds the cavity (101); A first end cap (108) is disposed at one end of the shell body (106), and the first end cap (108) is provided with an assembly channel (1083) that communicates with the inner cavity (101). The drive unit (110) passes through the assembly channel (1083) and is threadedly connected to the first end cap (108), so that when the drive unit (110) receives a rotational driving force, the drive unit (110) can rotate relative to the first end cap (108) around the rotation axis of the drive unit (110) and move synchronously along the direction of the rotation axis, so that the stirring unit (120) performs the first movement and the second movement synchronously.

5. The bone cement mixing system according to claim 4, characterized in that, The drive unit (110) is provided with an external thread, and the first end cap (108) is provided with an internal thread. The internal thread is arranged around the assembly channel (1083). The drive unit (110) passes through the assembly channel (1083), and the external thread is connected to the internal thread. When the drive unit (110) receives a rotational driving force, the external thread can rotate relative to the internal thread around the rotation axis and move synchronously along the direction of the rotation axis, so that the drive unit (110) drives the stirring unit (120) to perform the first movement and the second movement synchronously.

6. The bone cement mixing system according to claim 4, characterized in that, The first end cap (108) includes a cap body (1081) and two side wings (1082). The cap body (1081) is connected to the shell body (106). The assembly channel (1083) is disposed through the cap body (1081). The side wings (1082) are symmetrically disposed on both sides of the cap body (1081).

7. The bone cement mixing system according to claim 4, characterized in that, The bone cement mixing system further includes a dispensing unit (111), which is disposed in the inner cavity (101) and connected to the driving unit (110). The housing (100) has a first end (102) and a second end (103) disposed opposite to each other in the direction of the rotation axis, the first end cap (108) is located at the first end (102), and an injection port (104) communicating with the inner cavity (101) is provided at the second end (103). When the drive unit (110) receives a rotational driving force, the drive unit (110) can drive the injection unit (111) to move along the direction of the rotation axis so as to inject the bone cement mixture in the cavity (101) into the bone through the injection port (104).

8. The bone cement mixing system according to claim 7, characterized in that, The injection section (111) is disposed at one end of the drive section (110) and is connected between the drive section (110) and the stirring section (120); When the drive unit (110) receives the rotational driving force, the drive unit (110) can drive the injection unit (111) to rotate around the rotation axis and move synchronously along the direction of the rotation axis, so as to drive the stirring unit (120) to perform the first movement and the second movement synchronously.

9. The bone cement mixing system according to claim 7, characterized in that, The drive unit (110) is disposed through the injection unit (111); The stirring part (120) is located on the side of the injection part (111) away from the first end cap (108) and is installed at one end of the driving part (110).

10. The bone cement mixing system according to any one of claims 7 to 9, characterized in that, The injection part (111) is spaced apart from the inner wall (105) of the housing (100). The injection part (111) is provided with an assembly groove (115) along its circumference. A sealing element (113) is provided in the assembly groove (115). The sealing element (113) forms a seal between the injection part (111) and the inner wall (105).

11. The bone cement mixing system according to claim 7, characterized in that, The shell body (106) is provided with a feed port (1061) that communicates with the inner cavity (101). The housing (100) further includes a second end cap (107) disposed opposite to the first end cap (108) in the direction of the rotation axis, the injection port (104) is disposed on the second end cap (107), the second end cap (107) is movably connected to the housing body (106), and the second end cap (107) is movable relative to the housing body (106) between a first position and a second position; In the first position, the second end cap (107) opens the feed port (1061) so that the bone cement component can be fed into the inner cavity (101) through the feed port (1061); In the second position, the second end cap (107) closes the feed port (1061).

12. The bone cement mixing system according to claim 1, characterized in that, The transmission joint (112) is located outside the housing (100).

13. The bone cement mixing system according to claim 1, characterized in that, The drive unit (110) includes: The first drive shaft (1101) has the stirring part (120) mounted on one end of the first drive shaft (1101); A rolling bearing (1102) is sleeved on the outer periphery of the first drive shaft (1101); The second drive shaft (1103) is sleeved on the outer periphery of the rolling bearing (1102) and is connected to the first drive shaft (1101) through the rolling bearing (1102); When the first drive shaft (1101) receives a rotational driving force, the first drive shaft (1101) can drive the stirring part (120) to perform the first movement; When the second drive shaft (1103) receives a rotational driving force, the second drive shaft (1103) can drive the first drive shaft (1101) to move along the rotation axis of the second drive shaft (1103) to drive the stirring part (120) to perform the second movement.

14. The bone cement mixing system according to claim 13, characterized in that, The housing (100) includes: Shell body (106), the shell body (106) surrounds the cavity (101); A first end cap (108) is disposed at one end of the shell body (106), and the first end cap (108) is provided with an assembly channel (1083) that communicates with the inner cavity (101). The second drive shaft (1103) passes through the assembly channel (1083) and is threadedly connected to the first end cap (108), so that when the second drive shaft (1103) receives a rotational driving force, the second drive shaft (1103) can rotate relative to the first end cap (108) around the rotation axis and move in the direction of the rotation axis, so as to drive the first drive shaft (1101) to move in the direction of the rotation axis, thereby driving the stirring part to perform the second movement.

15. The bone cement mixing system according to claim 14, characterized in that, The bone cement mixing device (10) further includes a dispensing part (111), which is disposed in the inner cavity (101) and connected to the driving part (110). The housing (100) has a first end (102) and a second end (103) disposed opposite to each other in the direction of the rotation axis, the first end cap (108) is located at the first end (102), and an injection port (104) communicating with the inner cavity (101) is provided at the second end (103). When the second drive shaft (1103) receives the rotational driving force, the second drive shaft (1103) can drive the injection part (111) to move along the direction of the rotation axis so as to inject the bone cement mixture in the cavity (101) into the bone through the injection port (104).

16. A bone cement mixing device (20), characterized in that, Automatic mixing for bone cement mixing device (10), the bone cement mixing device (10) includes a housing (100), a drive unit (110) and a mixing unit (120), the drive unit (110) is connected to a transmission joint (112). The bone cement mixing equipment (20) includes: A power unit (210) is provided to provide a driving force for rotation about a rotation axis; the power unit (210) includes a power output shaft (211) having a receiving cavity (2111) extending axially therein, the receiving cavity (2111) being capable of accommodating the transmission joint (112); the receiving cavity (2111) is adapted to the shape of the transmission joint (112), and the shape is configured to allow the power output shaft (211) to transmit torque to the transmission joint (112); by inserting the transmission joint (112) into the receiving cavity (2111), the power output shaft (211) can provide a rotational driving force to the transmission joint (112), so that the transmission joint (112) moves synchronously along the axial direction of the receiving cavity (2111) when rotating, thereby realizing the automatic mixing of the bone cement mixing device (10); A limiting device (220) is disposed on one side of the power device (210) in the direction of the rotation axis. The limiting device (220) is used to limit the housing (100) in the direction of the rotation driving force and in the direction along the rotation axis. The limiting device (220) is provided with a limiting cavity (222). The limiting cavity (222) is configured to cooperate with the housing (100) when the bone cement mixing device (10) is placed in the bone cement mixing equipment (20) and the housing (100) passes through the limiting cavity (222) so as to limit the housing (100) in the direction along the rotation driving force through the limiting cavity (222).

17. The bone cement mixing equipment (20) according to claim 16, characterized in that, The limiting device (220) includes: The base (221) is provided with the limiting cavity (222) and the slider channel (224), the slider channel (224) is connected to the limiting cavity (222), and the limiting cavity (222) is used to limit the rotation in the direction of the driving force. A limiting slider (223) is inserted into the limiting cavity (222) from the slider channel (224) to limit the movement in the direction of the rotation axis.

18. The bone cement mixing equipment (20) according to claim 16, characterized in that, The limiting cavity (222) includes a main cavity (2221) and two side cavities (2222) that are interconnected. The side cavities (2222) are symmetrically arranged on both sides of the main cavity (2221).

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