A special intraoperative portable vacuum mixing device for bone adhesives

Abstract

The present invention provides a portable bone adhesive vacuum mixing device for intraoperative use, which belongs to the field of medical devices. It comprises an extraction shell and a mixing shell; a micro vacuum pump is fixedly connected to the upper end of the extraction shell, and a powder raw material inlet is provided at the upper end of the extraction shell near the micro vacuum pump, and a liquid raw material storage chamber is provided inside the extraction shell; a mixing capsule is provided inside the mixing shell, and a bone adhesive mixing unit is provided inside the mixing shell. The overall volume of the present invention is small and the portability is good. It can be used inside the operating room during the operation. At the same time, the present invention uses the bone adhesive mixing unit for mixing, which reduces the labor intensity, and because vacuum mixing is achieved, the mixing effect is better. In addition, after the bone adhesive is mixed, the present invention only needs to disassemble the mixing shell and fill the mixing capsule with clean water for flushing, thereby simplifying the cleaning process.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly to a portable bone adhesive vacuum mixing device used during surgery. Background Art

[0002] Bone adhesive is a medical adhesive widely used in orthopedic surgery. It is mainly used to fix bones, fill defects, and promote fracture healing. Bone adhesive is an adhesive material that can tightly bond two different materials (such as bone and implant, bone and bone) together and maintain their stability for a certain period of time.

[0003] Polymethyl methacrylate bone cement (PMMA bone cement) is a type of bone cement. PMMA bone cement consists of a liquid monomer component and a powder component. PMMA bone cement can be prepared by mixing the adhesive powder with the monomer liquid in a suitable mixing cup using a spatula. A disadvantage of this approach is that air can be trapped in the resulting adhesive paste, which can subsequently cause the bone cement to lose mechanical stability. For this reason, mixing the bone cement powder and monomer liquid should preferably be performed in a mixing device that includes a vacuum source. This vacuum mixing minimizes air inclusions from the adhesive paste, thereby achieving optimal adhesive quality.

[0004] For example, a prior art Chinese patent with authorization publication number CN107008197B provides a vacuum mixing device. This device comprises at least one cartridge, a mixing element, a receptacle, an opening mechanism, a pump, and connecting piping. This device requires no external auxiliary means, such as a compressed air-driven vacuum pump and vacuum hose, and operates without an energy source, such as compressed air or batteries. It can be used independently and can be used under both the simplest and most challenging surgical conditions.

[0005] In the above-mentioned prior art, although vacuum mixing of bone adhesive can be achieved under the simplest or most difficult surgical conditions, no external auxiliary means such as a vacuum pump and vacuum hose driven by compressed air are required, and it can be operated without an energy source such as compressed air or a battery, thereby expanding the applicable scenarios to a certain extent, the overall size of the device is large and the portability is poor, so it cannot be used in a relatively small space, such as inside an operating room during surgery. At the same time, the prior art uses manual mixing, which has high labor intensity and unsatisfactory mixing effect. In addition, the mixing structure of this technology is relatively complex. After the bone adhesive is mixed, the cleaning process is relatively cumbersome, and the convenience of use still needs to be improved. Summary of the Invention

[0006] In view of the problems existing in the prior art, the object of the present invention is to provide a portable bone adhesive vacuum mixing device specially used during surgery.

[0007] In order to solve the above problems, the present invention adopts the following technical solutions:

[0008] A portable bone adhesive vacuum mixing device for intraoperative use, comprising an extraction shell and a mixing shell, wherein the extraction shell and the mixing shell are detachably connected; a micro vacuum pump is fixedly connected to the upper end of the extraction shell, and a powder raw material inlet is provided at the upper end of the extraction shell near the micro vacuum pump; a liquid raw material storage chamber is provided inside the extraction shell, a liquid raw material injection port connected to the liquid raw material storage chamber is provided at one end of the extraction shell, a liquid raw material extraction rod is slidably and sealedly connected to the liquid raw material storage chamber, a powder material injection port and a vacuum suction port are symmetrically provided at one end of the extraction shell with respect to the liquid raw material injection port, the powder material injection port and the powder raw material inlet are connected by a pipeline, and the vacuum suction port and the micro vacuum pump are connected by a pipeline;

[0009] A mixing capsule is provided inside the mixing shell, and the mixing capsule is connected to the liquid raw material injection port, the powder injection port and the vacuum suction port. A bone adhesive discharge port is provided in the middle position of one end of the mixing shell, and the bone adhesive discharge port is connected to one end of the mixing capsule. A bone adhesive mixing unit is provided inside the mixing shell.

[0010] Optionally, a control panel is provided on one side of the upper surface of the extraction shell, and a battery is provided on the upper surface of the extraction shell near the control panel.

[0011] Optionally, the mixing capsule includes a trapezoidal interface capsule, one end of the trapezoidal interface capsule is provided with three connection ports, and the three connection ports can be detachably connected to the powder raw material inlet, the powder injection port and the vacuum suction port respectively, one end of the trapezoidal interface capsule is fixed and connected to the No. 1 olive-shaped capsule, one end of the No. 1 olive-shaped capsule is fixed and connected to the middle convergence channel, one end of the middle convergence channel is fixed and connected to the No. 2 olive-shaped capsule, and the No. 2 olive-shaped capsule is connected to the bone adhesive discharge port.

[0012] Optionally, the trapezoidal interface capsule, the first olive-shaped capsule, and the second olive-shaped capsule are all made of rubber material, and the middle convergence channel is made of hard plastic material.

[0013] Optionally, the bone adhesive mixing unit includes a bone adhesive extrusion assembly disposed at one end of the mixing shell, a return material extrusion assembly disposed on the inner wall of the mixing shell and used in conjunction with the bone adhesive extrusion assembly, and a preliminary material mixing assembly disposed below the first olive-shaped capsule;

[0014] The bone adhesive extrusion assembly includes a mounting block fixedly connected to the bottom wall of the mixing shell, and a No. 2 motor fixedly connected to the side wall of one end of the mixing shell, one end of the mounting block is rotatably connected to a ball screw, one end of the ball screw passes through the mixing shell and is fixedly connected to the output shaft of the No. 2 motor, the upper end of the ball screw is spirally connected to the No. 1 ball nut seat, the lower end of the No. 1 ball nut seat is fixedly connected to the No. 3 motor, the output shaft of the No. 3 motor passes through the No. 1 ball nut seat and is fixedly connected to the reciprocating screw, the upper and lower ends of the reciprocating screw are symmetrically spirally connected to two No. 2 ball nut seats, one end of the No. 2 ball nut seat at the lower end is fixedly connected to the lower extrusion roller, and one end of the No. 2 ball nut seat at the upper end is fixedly connected to the upper extrusion roller.

[0015] Optionally, the return material extrusion assembly includes a No. 1 motor fixedly connected to the outer wall of the mixing shell, the output shaft of the No. 1 motor passes through the mixing shell and is fixedly connected to an incomplete gear, the outer side of the incomplete gear is sleeved on a rectangular frame, and the upper and lower ends of the interior of the rectangular frame are fixedly connected to the extrusion racks, and the incomplete gear is meshed with the two sets of extrusion racks, one end of the rectangular frame is fixedly connected to an L-shaped rod, one end of the L-shaped rod is fixedly connected to the storage extrusion part, the inner wall of the mixing shell is fixedly connected to a limit frame, and the L-shaped rod and the limit frame pass through and are slidably connected; the other end of the rectangular frame is fixedly connected to a push rod, and one end of the push rod is movably connected to a trigger assembly.

[0016] Optionally, the receiving extrusion portion includes a cylinder fixedly connected to one end of the L-shaped rod, and a trumpet-shaped receiving opening is provided through the interior of the cylinder, and the large end of the trumpet-shaped receiving opening faces the No. 1 olive-shaped capsule.

[0017] Optionally, the trigger assembly includes a mounting shell fixedly connected to the inner wall of the mixing shell, one side of the mounting shell is penetrated by and slidably connected to the top rod, and the top rod extends to one end inside the mounting shell and is fixedly connected to the positive pole, one end inside the mounting shell is fixedly connected to the retaining frame, the middle position of the retaining frame is fixedly connected to the negative pole, one end of the negative pole is fixedly connected to the signal transceiver module, and the positive pole, negative pole and signal transceiver module are connected in series.

[0018] Optionally, the preliminary mixing assembly includes two connecting seats fixedly connected to the middle position of the bottom wall of the mixing shell, a rotating rod is rotatably connected between the two connecting seats, and a V-shaped double-sided mixing clapper is fixedly connected to the middle position of the outer circle of the rotating rod, the rotating rod passes through one of the connecting seats and is fixedly connected to the swing gear, the upper end of the swing gear is meshed with a reciprocating rack, both ends of the reciprocating rack are fixedly connected to the toothless rod body, the bottom wall of the mixing shell is also provided with two groups of supporting frames, and the combination of the reciprocating rack and the toothless rod body is slidably connected to the two groups of supporting frames, one end of one of the toothless rod bodies is fixedly connected to the swing frame, the bottom wall of the mixing shell is also provided with a No. 4 motor, and the output shaft of the No. 4 motor is fixedly connected to the swing shaft connecting rod, one end of the swing shaft connecting rod is fixedly connected to the swing shaft, the swing shaft passes through the swing frame, and the reciprocating rack and the output shaft of the No. 4 motor are located in the same horizontal plane, and the length of the swing shaft connecting rod is half of the axial length of the swing frame.

[0019] Optionally, buckles are fixedly connected to the four corners of one end of the mixing shell, and slots are opened at the four corners of one end of the extraction shell, and the extraction shell and the mixing shell are detachably connected through the buckles and the slots.

[0020] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0021] In the above scheme, when vacuum mixing the bone adhesive raw materials, the overall volume of the device is small and the portability is good. It can be used in a relatively small space, such as inside an operating room during surgery. At the same time, the present invention uses the bone adhesive mixing unit to mix and is equipped with a battery for power supply, which reduces manual labor intensity. The vacuum mixing is achieved, and the mixing effect is better. In addition, after the bone adhesive is mixed, the present invention only needs to remove the mixing shell and fill the mixing capsule with clean water for flushing. There is no need to flush the bone adhesive mixing unit that has not contacted the bone adhesive, thereby simplifying the cleaning process and further improving the convenience of use.

[0022] A bone adhesive mixing unit is provided to extrude the bone adhesive inside the No. 1 olive-shaped capsule, so that the bone adhesive is pressurized and passes through the intermediate convergence channel into the No. 2 olive-shaped capsule, and is mixed by using the intermediate convergence channel. The diameter of the intermediate convergence channel is small, which ensures the mixing effect. Then, the bone adhesive transferred to the interior of the No. 2 olive-shaped capsule is re-extruded by the bone adhesive mixing unit, and enters the No. 1 olive-shaped capsule through the intermediate convergence channel. The above process is repeated. When the bone adhesive passes through the intermediate convergence channel back and forth, it is repeatedly pressurized and mixed, which further improves the mixing effect of the bone adhesive.

[0023] By setting up a trigger assembly, when the rectangular frame and the components installed thereon move together to the leftmost position and are about to start returning to the right, the top rod fixed to the rectangular frame will drive the positive electrode column to contact the negative electrode column and connect the signal transceiver module, so that the signal transceiver module works and notifies the control panel to control the bone adhesive extrusion assembly to start working. That is, when the return material extrusion assembly returns to the right, the bone adhesive extrusion assembly synchronously starts to move to the right again, thereby improving the degree of automation of the device and shortening the working cycle of the bone adhesive extrusion assembly and the return material extrusion assembly.

[0024] By setting up a preliminary mixing component, before starting the bone adhesive extrusion component and the return material extrusion component to start reciprocating extrusion and mixing, the No. 4 motor is first controlled through the control panel to drive the swing shaft connector and the swing shaft to start rotating. Since the swing shaft runs through the swing frame, when the swing shaft rotates, it will drive the swing frame, the toothless rod body, and the reciprocating rack to move back and forth in a straight line. When the reciprocating rack moves back and forth in a straight line, it will drive the swing gear to rotate back and forth, thereby driving the rotating rod and the two sides of the V-shaped double-sided mixing patter to reciprocate and beat the bottom of the No. 1 olive-shaped capsule to mix, thereby playing a preliminary role in mixing the powder raw materials and the liquid raw materials, facilitating the subsequent work of the bone adhesive extrusion component, and further improving the mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 Another perspective structural diagram;

[0028] Figure 3 This is a schematic cross-sectional view of the housing and components mounted thereon according to the present invention;

[0029] Figure 4 Schematic diagram of the cross-sectional structure of the mixing housing and the components mounted thereon according to the present invention;

[0030] Figure 5 Schematic diagram of the structure of the bone adhesive mixing unit and the mixing capsule of the present invention;

[0031] Figure 6 This is a schematic structural diagram of the recycling extrusion assembly of the present invention;

[0032] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure of the middle storage extrusion part;

[0033] Figure 8 is a schematic structural diagram of a bone adhesive extrusion assembly of the present invention;

[0034] Figure 9 Schematic diagram of the cross-sectional structure of the trigger assembly of the present invention;

[0035] Figure 10 Schematic diagram of the structure of the preliminary mixing component of the present invention.

[0036] [Reference Signs]

[0037] 1. Extraction shell; 2. Mixing shell; 3. Liquid raw material extraction rod; 4. Control panel; 5. Mini vacuum pump;

[0038] 6. Mixing capsule; 61. Trapezoidal interface capsule; 62. Connecting port; 63. Olive-shaped capsule No. 1; 64. Middle convergence channel; 65. Olive-shaped capsule No. 2;

[0039] 7. Recycled material extrusion assembly; 71. Motor No. 1; 72. Incomplete gear; 73. Rectangular frame; 74. Extrusion rack; 75. L-shaped rod; 76. Limiting frame; 77. Storage extrusion unit; 771. Cylinder; 772. Trumpet-shaped storage port; 78. Ejector rod; 79. Trigger assembly; 791. Mounting housing; 792. Cage; 793. Signal transceiver module; 794. Negative pole; 795. Positive pole.

[0040] 8. Bone adhesive extrusion assembly; 81. Mounting block; 82. Ball screw; 83. Motor No. 2; 84. Ball nut seat No. 1; 85. Motor No. 3; 86. Reciprocating screw; 87. Ball nut seat No. 2; 88. Lower extrusion roller; 89. Upper extrusion roller;

[0041] 9. Preliminary mixing assembly; 91. Connecting seat; 92. Rotating rod; 93. Swinging gear; 94. V-shaped double-sided mixing clapper; 95. Support frame; 96. Reciprocating rack; 97. Gearless rod body; 98. Swinging frame; 99. Swinging shaft; 910. Swinging shaft connecting rod; 911. No. 4 motor;

[0042] 10. Battery; 11. Powder raw material inlet; 12. Powder material injection port; 13. Liquid raw material injection port; 14. Vacuum suction port; 15. Bone adhesive discharge port; 16. Buckle; 17. Card slot; 18. Liquid raw material storage chamber.

[0043] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0044] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative methods for implementing certain known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0045] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0046] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0047] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0048] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0049] like Figures 1 to 10As shown, an embodiment of the present invention provides a portable bone adhesive vacuum mixing device for intraoperative use, comprising an extraction shell 1 and a mixing shell 2, and the extraction shell 1 and the mixing shell 2 are detachably connected; a micro vacuum pump 5 is fixedly connected to the upper end of the extraction shell 1, and a powder raw material inlet 11 is provided at the upper end of the extraction shell 1 near the micro vacuum pump 5, a liquid raw material storage chamber 18 is provided inside the extraction shell 1, and a liquid raw material injection port 13 connected to the liquid raw material storage chamber 18 is provided at one end of the extraction shell 1, a liquid raw material extraction rod 3 is slidingly and sealedly connected to the liquid raw material storage chamber 18, a powder material injection port 12 and a vacuum suction port 14 are symmetrically provided at one end of the extraction shell 1 about the liquid raw material injection port 13, and the powder material injection port 12 is connected to the powder raw material inlet 11 through a pipeline, and the vacuum suction port 14 is connected to the micro vacuum pump 5 through a pipeline.

[0050] A mixing capsule 6 is provided inside the mixing shell 2, and the mixing capsule 6 is connected to the liquid raw material injection port 13, the powder injection port 12 and the vacuum suction port 14. A bone adhesive discharge port 15 is provided in the middle position of one end of the mixing shell 2, and the bone adhesive discharge port 15 is connected to one end of the mixing capsule 6. A bone adhesive mixing unit is provided inside the mixing shell 2.

[0051] A control panel 4 is provided on one side of the upper surface of the extraction shell 1 , and a battery 10 is provided on the upper surface of the extraction shell 1 near the control panel 4 .

[0052] like Figure 1 and Figure 2 As shown, buckles 16 are fixedly connected to the four corners of one end of the mixing shell 2, and slots 17 are opened at the four corners of one end of the extraction shell 1. The extraction shell 1 and the mixing shell 2 are detachably connected through the buckles 16 and the slots 17.

[0053] The existing technology has a large overall size and poor portability, so it cannot be used in a relatively small space, such as inside an operating room during surgery. At the same time, the existing technology uses manual mixing, which is labor-intensive and has an unsatisfactory mixing effect. In addition, the mixing structure of this technology is relatively complex, and the cleaning process after the bone adhesive is mixed is relatively cumbersome. The convenience of use still needs to be improved.

[0054] When the present invention is used, the liquid raw material injection port 13 is first placed inside the storage device for the bone adhesive liquid raw material. It should be noted that the liquid raw material injection port 13 is longer than the powder injection port 12 and the vacuum suction port 14, which is convenient for sucking the liquid raw material. Then, the liquid raw material extraction rod 3 is manually pulled backward (the liquid raw material extraction rod 3 is similar to the syringe extraction rod, and the front end is provided with a rubber stopper and is slidably sealed with the liquid raw material storage chamber 18). After the liquid raw material extraction rod 3 is manually pulled, the volume of the liquid stored in the liquid raw material storage chamber 18 increases, generating negative pressure, and the bone adhesive liquid raw material is sucked into the liquid raw material storage chamber. Inside the cavity 18, the preparation of the liquid raw material is completed, and then the liquid raw material injection port 13 is connected to one end of the mixing capsule 6 (the powder injection port 12, the liquid raw material injection port 13, and the vacuum suction port 14 are all detachably connected to the mixing capsule 6, and the optional detachable connection methods are threaded connection, snap connection, etc., as a prior art, they are not described here). At the same time, the powder injection port 12 and the vacuum suction port 14 are fixed and connected to the mixing capsule 6. Finally, the extraction shell 1 and the mixing shell 2 are connected by snap fasteners 16 and slots 17 to complete the overall pre-mixing preparation of the device.

[0055] Then, the control panel 4 controls the micro vacuum pump 5 to operate, and the air inside the mixing capsule 6 is adsorbed through the vacuum suction port 14, so that the interior of the mixing capsule 6 is evacuated. (In the process before the bone adhesive is mixed and discharged, the electromagnetic valves arranged inside the bone adhesive discharge port 15 are all in a closed state. At the same time, electromagnetic valves are arranged inside the powder injection port 12, the liquid raw material injection port 13, and the vacuum suction port 14. When one of the three is working, the control panel 4 controls the electromagnetic valves inside the other two ports to close. In this state, the electromagnetic valves inside the powder injection port 12 and the liquid raw material injection port 13 are closed.) After the vacuum operation is completed, the bone adhesive powder raw material is injected into the mixing capsule 6 through the powder raw material inlet 11 and the powder injection port 12. In this state, the liquid raw material injection port 13 and the vacuum suction port 14 are closed. All the solenoid valves are closed, and it should be noted that vacuum injection should be ensured when injecting the bone adhesive powder raw material through the powder raw material inlet 11 and the powder injection port 12; after the powder raw material is injected into the mixing capsule 6, the internal solenoid valve of the liquid raw material injection port 13 is opened, and the internal solenoid valves of the powder raw material injection port 12 and the vacuum suction port 14 are closed. The liquid raw material extraction rod 3 is manually pressed and the negative pressure inside the mixing capsule 6 is cooperated with to inject the liquid raw material into the mixing capsule 6 to complete the vacuum injection of the entire raw material. At this time, the internal solenoid valves of the powder raw material injection port 12, the liquid raw material injection port 13, and the vacuum suction port 14 are closed, and the bone adhesive mixing unit is used to mix the liquid raw material and the powder raw material inside the mixing capsule 6 to form a bone adhesive paste. Finally, the finished product is discharged through the bone adhesive discharge port 15 to complete the vacuum mixing operation of the bone adhesive.

[0056] When vacuum mixing bone adhesive raw materials, the present invention has a small overall size and good portability, and can be used in relatively confined spaces, such as inside an operating room during surgery. At the same time, the present invention uses a bone adhesive mixing unit to perform mixing and is equipped with a battery 10 for power supply, thereby reducing manual labor intensity. Moreover, due to the implementation of vacuum mixing, the mixing effect is improved. In addition, after the bone adhesive is mixed, the present invention only needs to remove the mixing shell 2 and fill the mixing capsule 6 with clean water for flushing. There is no need to flush the bone adhesive mixing unit that has not contacted the bone adhesive, thereby simplifying the cleaning process and further improving the convenience of use.

[0057] like Figure 4 and Figure 5 As shown, the mixing capsule 6 includes a trapezoidal interface capsule 61, and three connecting ports 62 are provided at one end of the trapezoidal interface capsule 61. The three connecting ports 62 can be detachably connected to the powder raw material inlet 11, the powder injection port 12 and the vacuum suction port 14 respectively. One end of the trapezoidal interface capsule 61 is fixed and connected to the No. 1 olive-shaped capsule 63, one end of the No. 1 olive-shaped capsule 63 is fixed and connected to the middle convergence channel 64, one end of the middle convergence channel 64 is fixed and connected to the No. 2 olive-shaped capsule 65, and the No. 2 olive-shaped capsule 65 is connected to the bone adhesive discharge port 15.

[0058] The trapezoidal interface capsule 61, the first olive-shaped capsule 63, and the second olive-shaped capsule 65 are all made of rubber, and the middle convergence channel 64 is made of hard plastic.

[0059] The mixing capsule 6 is divided into a trapezoidal interface capsule 61, a No. 1 olive-shaped capsule 63, a No. 2 olive-shaped capsule 65 and an intermediate convergence channel 64. The powder raw material and the liquid raw material injected into the mixing capsule 6 through the powder injection port 12 and the liquid raw material injection port 13 will first enter the No. 1 olive-shaped capsule 63 through the trapezoidal interface capsule 61 and be pre-mixed inside the No. 1 olive-shaped capsule 63. After the mixing is completed, the bone adhesive mixing unit is used to squeeze the bone adhesive inside the No. 1 olive-shaped capsule 63 to pressurize it. The bone adhesive passes through the middle convergent channel 64 and enters the second olive-shaped capsule 65, and is mixed by the middle convergent channel 64. The diameter of the middle convergent channel 64 is small, which ensures the mixing effect. Then, the bone adhesive transferred to the inside of the second olive-shaped capsule 65 is re-extruded by the bone adhesive mixing unit and enters the first olive-shaped capsule 63 through the middle convergent channel 64. The above process is repeated. When the bone adhesive passes through the middle convergent channel 64 back and forth, it is repeatedly pressurized and mixed, which further improves the mixing effect of the bone adhesive.

[0060] like Figure 5 and Figure 8As shown, the bone adhesive mixing unit includes a bone adhesive extrusion assembly 8 arranged at one end of the mixing shell 2, a return material extrusion assembly 7 arranged on the inner wall of the mixing shell 2 and used in conjunction with the bone adhesive extrusion assembly 8, and a preliminary mixing assembly 9 arranged below the first olive-shaped capsule 63.

[0061] The bone adhesive extrusion assembly 8 includes a mounting block 81 fixedly connected to the bottom wall of the mixing shell 2, and a No. 2 motor 83 fixedly connected to the side wall of one end of the mixing shell 2. One end of the mounting block 81 is rotatably connected to a ball screw 82. One end of the ball screw 82 passes through the mixing shell 2 and is fixedly connected to the output shaft of the No. 2 motor 83. The ball screw 82 is spirally connected to a No. 1 ball nut seat 84. The lower end of the No. 1 ball nut seat 84 is fixedly connected to a No. 3 motor 85. The output shaft of the No. 3 motor 85 passes through the No. 1 ball nut seat 84 and is fixedly connected to a reciprocating screw 86. The upper and lower ends of the reciprocating screw 86 are symmetrically spirally connected to two No. 2 ball nut seats 87. One end of the No. 2 ball nut seat 87 at the lower end is fixedly connected to a lower extrusion roller 88, and one end of the No. 2 ball nut seat 87 at the upper end is fixedly connected to an upper extrusion roller 89.

[0062] like Figures 5 to 7 As shown, the regrind extrusion assembly 7 includes a No. 1 motor 71 fixedly connected to the outer wall of the mixing shell 2. The output shaft of the No. 1 motor 71 passes through the mixing shell 2 and is fixedly connected to an incomplete gear 72. The incomplete gear 72 is sleeved on the outside of a rectangular frame 73, and the upper and lower ends of the rectangular frame 73 are fixedly connected to extrusion racks 74. The incomplete gear 72 is meshed with both sets of extrusion racks 74. One end of the rectangular frame 73 is fixedly connected to an L-shaped rod 75, and one end of the L-shaped rod 75 is fixedly connected to a storage extrusion portion 77. The inner wall of the mixing shell 2 is fixedly connected to a limit frame 76, and the L-shaped rod 75 and the limit frame 76 pass through and are slidably connected. The other end of the rectangular frame 73 is fixedly connected to a push rod 78, and one end of the push rod 78 is movably connected to a trigger assembly 79.

[0063] The receiving extrusion portion 77 includes a cylinder 771 fixedly connected to one end of the L-shaped rod 75 , and a trumpet-shaped receiving opening 772 is formed through the cylinder 771 , and the large end of the trumpet-shaped receiving opening 772 faces the first olive-shaped capsule 63 .

[0064] When the bone adhesive mixing unit is working, first, the bone adhesive extrusion assembly 8 works to squeeze the bone adhesive inside the No. 1 olive-shaped capsule 63 into the No. 2 olive-shaped capsule 65 through the middle convergence channel 64. Specifically, the No. 3 motor 85 is controlled by the control panel 4 to work, driving the reciprocating screw 86 fixed thereto to rotate. When the reciprocating screw 86 rotates, the two No. 2 ball nut seats 87 located at the upper and lower ends thereof will move relative to the middle position of the reciprocating screw 86, and at the same time drive the lower extrusion roller 88 and the upper extrusion roller 89 to approach each other, and after they are in close contact, the No. 3 motor 85 is turned off, and the No. 2 motor 83 is controlled by the control panel 4 to work. When the No. 2 motor 83 rotates, it will drive the ball screw fixed thereto. The lever 82 rotates, and causes the No. 1 ball nut seat 84 to move along the ball screw 82 toward the No. 2 motor 83. As the No. 1 ball nut seat 84 moves, it drives the lower extrusion roller 88 and the upper extrusion roller 89 to move toward the No. 2 motor 83, and squeezes the raw material mixture inside the No. 1 olive-shaped capsule 63, so that it is pressurized to gradually enter the No. 2 olive-shaped capsule 65 through the intermediate convergence channel 64. When the lower extrusion roller 88 and the upper extrusion roller 89 move to the intermediate convergence channel 64, they can squeeze all the raw material mixture inside the No. 1 olive-shaped capsule 63 into the No. 2 olive-shaped capsule 65. At this time, the No. 2 motor 83 is controlled to reverse, driving the lower extrusion roller 88 and the upper extrusion roller 89 to return to their initial positions ( Figure 5 The position shown is the initial position) to complete one mixing.

[0065] Then, the return material extrusion assembly 7 starts to work, and the raw material mixture inside the second olive-shaped capsule 65 is squeezed into the first olive-shaped capsule 63 through the middle convergence channel 64. Specifically, the control panel 4 controls the first motor 71 to work, driving the incomplete gear 72 to rotate counterclockwise. When the incomplete gear 72 first engages with the extrusion rack 74 at the upper end of the rectangular frame 73, it drives the rectangular frame 73 and the components installed thereon to move to the left together ( Figure 5 The direction shown), so that the receiving and extruding portion 77 converges and extrude the No. 2 olive-shaped capsule 65, and re-extrudes the raw material mixture inside the No. 2 olive-shaped capsule 65 through the intermediate convergence channel 64 into the No. 1 olive-shaped capsule 63 for secondary mixing, and a trumpet-shaped receiving opening 772 is provided inside the cylinder 771, and the large end of the trumpet-shaped receiving opening 772 is directed toward the No. 1 olive-shaped capsule 63, which is convenient for the extrusion operation. It should be noted that when the rectangular frame 73 and the components installed thereon move to the leftmost position together, the receiving and extruding portion 77 just moves to the position of the intermediate convergence channel 64, which can squeeze all the raw material mixture inside the No. 2 olive-shaped capsule 65 into the No. 1 olive-shaped capsule 63; when the incomplete gear 72 continues to rotate counterclockwise and begins to mesh with the lower extrusion rack 74, it will drive the rectangular frame 73 and the components installed thereon to move to the right for reset ( Figure 5 The position shown is the initial state).

[0066] like Figure 9 As shown, the trigger assembly 79 includes a mounting shell 791 fixedly connected to the inner wall of the mixing shell 2, one side of the mounting shell 791 is penetrated and slidably connected with the top rod 78, and the top rod 78 extends to one end inside the mounting shell 791 and is fixedly connected to the positive pole 795, and the mounting shell 791 is fixedly connected to the retaining frame 792 at one end, and the middle position of the retaining frame 792 is fixedly connected to the negative pole 794, and one end of the negative pole 794 is fixedly connected to the signal transceiver module 793, and the positive pole 795, the negative pole 794 and the signal transceiver module 793 are connected in series.

[0067] When the return material extrusion assembly 7 is working, when the rectangular frame 73 and the components installed thereon move together to the leftmost position and are about to start to return to the right, the top rod 78 fixed to the rectangular frame 73 will drive the positive pole 795 to contact the negative pole 794, and connect the signal transceiver module 793, so that the signal transceiver module 793 works, notifying the control panel 4 to control the bone adhesive extrusion assembly 8 to start working, that is, when the return material extrusion assembly 7 returns to the right, the bone adhesive extrusion assembly 8 synchronously starts to move to the right again, thereby improving the degree of automation of the device and shortening the working cycle of the bone adhesive extrusion assembly 8 and the return material extrusion assembly 7.

[0068] like Figure 10 As shown, the preliminary mixing assembly 9 includes two connecting seats 91 fixedly connected to the middle position of the bottom wall of the mixing shell 2, and a rotating rod 92 is rotatably connected between the two connecting seats 91. A V-shaped double-sided mixing clapper 94 is fixedly connected to the middle position of the outer circumference of the rotating rod 92. The rotating rod 92 passes through one of the connecting seats 91 and is fixedly connected to the swing gear 93. The upper end of the swing gear 93 is meshed with a reciprocating rack 96. Both ends of the reciprocating rack 96 are fixedly connected to a toothless rod body 97. The bottom wall of the mixing shell 2 is also provided with two sets of supporting frames 95, and the reciprocating rack 9 6. The assembly of the toothless rod bodies 97 is slidably connected to the two sets of supporting frames 95. One end of one of the toothless rod bodies 97 is fixedly connected to the swing frame 98. The bottom wall of the mixing shell 2 is also provided with a No. 4 motor 911, and the output shaft of the No. 4 motor 911 is fixedly connected to the swing shaft connecting rod 910. One end of the swing shaft connecting rod 910 is fixedly connected to the swing shaft 99. The swing shaft 99 passes through the swing frame 98, and the reciprocating rack 96 and the output shaft of the No. 4 motor 911 are located in the same horizontal plane. The length of the swing shaft connecting rod 910 is half the axial length of the swing frame 98.

[0069] When the liquid raw material and the powder raw material are injected into the No. 1 olive-shaped capsule 63 for the first time, there will be obvious stratification due to the separate injection of the liquid raw material and the powder raw material. At this time, it will be difficult to squeeze the liquid raw material and the powder raw material in the No. 1 olive-shaped capsule 63 into the No. 2 olive-shaped capsule 65 through the bone adhesive extrusion assembly 8. The present invention provides a preliminary mixing assembly 9. Before starting the bone adhesive extrusion assembly 8 and the return material extrusion assembly 7 to start reciprocating extrusion and mixing, the No. 4 motor 911 is first controlled by the control panel 4 to work, driving the swing shaft connecting rod 910 and the swing shaft 99 to start rotating. Since the swing shaft 99 passes through the swing frame 98, when the swing shaft 99 rotates When the reciprocating rack 96 moves, it will drive the swing frame 98, the toothless rod body 97, and the reciprocating rack 96 to move back and forth linearly. When the reciprocating rack 96 moves back and forth linearly, it will drive the swing gear 93 to rotate back and forth, thereby driving the rotating rod 92 and the two sides of the V-shaped double-sided mixing beater 94 to reciprocate and beat the bottom of the No. 1 olive-shaped capsule 63 to mix it (the No. 1 olive-shaped capsule 63 is made of rubber and has a certain elasticity. After the powder raw material and the liquid raw material are injected, they will be deposited in the lower half of the No. 1 olive-shaped capsule 63 under the action of gravity), thereby playing a preliminary mixing of the powder raw material and the liquid raw material, facilitating the subsequent work of the bone adhesive extrusion component 8, and further improving the mixing effect.

[0070] The working process of the technical solution provided by the present invention is as follows:

[0071] When the present invention is used, the liquid raw material injection port 13 is first placed inside the storage device for the bone adhesive liquid raw material. It should be noted that the liquid raw material injection port 13 is longer than the powder injection port 12 and the vacuum suction port 14, which is convenient for sucking the liquid raw material. Then, the liquid raw material extraction rod 3 is manually pulled backward (the liquid raw material extraction rod 3 is similar to the syringe extraction rod, and the front end is provided with a rubber stopper and is slidably sealed with the liquid raw material storage chamber 18). After the liquid raw material extraction rod 3 is manually pulled, the volume of the liquid stored in the liquid raw material storage chamber 18 increases, generating negative pressure, and the bone adhesive liquid raw material is sucked into the liquid raw material storage chamber. Inside the cavity 18, the preparation of the liquid raw material is completed, and then the liquid raw material injection port 13 is connected to one end of the mixing capsule 6 (the powder injection port 12, the liquid raw material injection port 13, and the vacuum suction port 14 are all detachably connected to the mixing capsule 6, and the optional detachable connection methods are threaded connection, snap connection, etc., as a prior art, they are not described here). At the same time, the powder injection port 12 and the vacuum suction port 14 are fixed and connected to the mixing capsule 6. Finally, the extraction shell 1 and the mixing shell 2 are connected by snap fasteners 16 and slots 17 to complete the overall pre-mixing preparation of the device.

[0072] Then, the micro vacuum pump 5 is controlled to work through the control panel 4, and the air inside the mixing capsule 6 is adsorbed through the vacuum suction port 14, so that the interior of the mixing capsule 6 is evacuated. (In the process before the bone adhesive is mixed and discharged, the electromagnetic valves arranged inside the bone adhesive discharge port 15 are all in a closed state. At the same time, electromagnetic valves are arranged inside the powder injection port 12, the liquid raw material injection port 13, and the vacuum suction port 14. When one of the three is working, the control panel 4 controls the electromagnetic valves inside the other two ports to close. In this state, the electromagnetic valves inside the powder injection port 12 and the liquid raw material injection port 13 are closed.) After the vacuum operation is completed, the bone adhesive powder raw material is injected into the mixing capsule 6 through the powder raw material inlet 11 and the powder injection port 12. In this state, the liquid raw material The internal electromagnetic valves of the material injection port 13 and the vacuum suction port 14 are closed, and it should be noted that when injecting the bone adhesive powder raw material through the powder raw material inlet 11 and the powder material injection port 12, vacuum injection should be ensured; after the powder raw material is injected into the mixing capsule 6, the internal electromagnetic valve of the liquid raw material injection port 13 is opened, and the internal electromagnetic valves of the powder material injection port 12 and the vacuum suction port 14 are closed. The liquid raw material extraction rod 3 is manually pressed and the negative pressure inside the mixing capsule 6 is cooperated with to inject the liquid raw material into the mixing capsule 6 to complete the vacuum injection of the entire raw material. At this time, the internal electromagnetic valves of the powder material injection port 12, the liquid raw material injection port 13, and the vacuum suction port 14 are closed, and the bone adhesive mixing unit is used to mix the liquid raw material and powder raw material inside the mixing capsule 6 to form a bone adhesive paste.

[0073] After the entire bone adhesive mixing process is completed, it is only necessary to control the bone adhesive extrusion assembly 8 to move the lower extrusion roller 88 and the upper extrusion roller 89 to the second olive-shaped capsule 65 on the far right side, and the finished bone adhesive can be discharged through the bone adhesive discharge port 15.

[0074] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0075] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A portable bone adhesive vacuum mixing device for intraoperative use, comprising an extraction housing and a mixing housing, wherein the extraction housing and the mixing housing are detachably connected; characterized in that: A micro vacuum pump is fixedly connected to the upper end of the extraction shell, and a powder raw material inlet is provided at the upper end of the extraction shell near the micro vacuum pump. A liquid raw material storage chamber is provided inside the extraction shell, and a liquid raw material injection port connected to the liquid raw material storage chamber is provided at one end of the extraction shell. A liquid raw material extraction rod is slidably and sealedly connected to the liquid raw material storage chamber. A powder material injection port and a vacuum suction port are symmetrically provided at one end of the extraction shell with respect to the liquid raw material injection port, and the powder material injection port is connected to the powder raw material inlet through a pipeline, and the vacuum suction port is connected to the micro vacuum pump through a pipeline. A mixing capsule is provided inside the mixing shell, and the mixing capsule is connected to the liquid raw material injection port, the powder injection port, and the vacuum suction port. A bone adhesive discharge port is provided in the middle of one end of the mixing shell, and the bone adhesive discharge port is connected to one end of the mixing capsule. A bone adhesive mixing unit is provided inside the mixing shell; The bone adhesive mixing unit includes a bone adhesive extrusion assembly disposed at one end of the mixing shell, a return material extrusion assembly disposed on the inner wall of the mixing shell and used in conjunction with the bone adhesive extrusion assembly, and a preliminary material mixing assembly disposed below the first olive-shaped capsule; The bone adhesive extrusion assembly includes a mounting block fixedly connected to the bottom wall of the mixing shell, and a No. 2 motor fixedly connected to the side wall of one end of the mixing shell, one end of the mounting block is rotatably connected to a ball screw, one end of the ball screw passes through the mixing shell and is fixedly connected to the output shaft of the No. 2 motor, the upper end of the ball screw is spirally connected to the No. 1 ball nut seat, the lower end of the No. 1 ball nut seat is fixedly connected to the No. 3 motor, the output shaft of the No. 3 motor passes through the No. 1 ball nut seat and is fixedly connected to a reciprocating screw, the upper and lower ends of the reciprocating screw are symmetrically spirally connected to two No. 2 ball nut seats, one end of the No. 2 ball nut seat at the lower end is fixedly connected to the lower extrusion roller, and one end of the No. 2 ball nut seat at the upper end is fixedly connected to the upper extrusion roller; The gear train is a gear that is engaged with the gears of the control gear and is connected with the gear of the control gear to the gear of the control gear.

2. The portable bone adhesive vacuum mixing device for intraoperative use according to claim 1, characterized in that: A control panel is provided on one side of the upper surface of the extraction shell, and a storage battery is provided at a position close to the control panel on the upper surface of the extraction shell.

3. The portable bone adhesive vacuum mixing device for intraoperative use according to claim 1, characterized in that: The mixing capsule includes a trapezoidal interface capsule, one end of which is provided with three connection ports, and the three connection ports can be detachably connected to the powder raw material inlet, the powder injection port and the vacuum suction port respectively. One end of the trapezoidal interface capsule is fixed to and connected to the No. 1 olive-shaped capsule, one end of the No. 1 olive-shaped capsule is fixed to and connected to the middle convergence channel, one end of the middle convergence channel is fixed to and connected to the No. 2 olive-shaped capsule, and the No. 2 olive-shaped capsule is connected to the bone adhesive discharge port.

4. The portable bone adhesive vacuum mixing device for intraoperative use according to claim 3, characterized in that: The trapezoidal interface capsule, the first olive-shaped capsule, and the second olive-shaped capsule are all made of rubber material, and the middle convergence channel is made of hard plastic material.

5. The portable bone adhesive vacuum mixing device for intraoperative use according to claim 1, characterized in that: The return material extrusion assembly includes a No. 1 motor fixedly connected to the outer wall of the mixing shell, the output shaft of the No. 1 motor passes through the mixing shell and is fixedly connected to an incomplete gear, the outer side of the incomplete gear is sleeved with a rectangular frame, and the upper and lower ends of the interior of the rectangular frame are fixedly connected to the extrusion racks, and the incomplete gear is meshed with the two sets of extrusion racks, one end of the rectangular frame is fixedly connected to an L-shaped rod, one end of the L-shaped rod is fixedly connected to the storage extrusion part, the inner wall of the mixing shell is fixedly connected to a limit frame, and the L-shaped rod and the limit frame pass through and are slidably connected; the other end of the rectangular frame is fixedly connected to a push rod, and one end of the push rod is movably connected to a trigger assembly.

6. The portable bone adhesive vacuum mixing device for intraoperative use according to claim 5, characterized in that: The receiving and extruding portion comprises a cylinder body fixedly connected to one end of the L-shaped rod, a trumpet-shaped receiving opening is provided through the inside of the cylinder body, and the major end of the trumpet-shaped receiving opening faces the No. 1 olive-shaped capsule.

7. The portable bone adhesive vacuum mixing device for intraoperative use according to claim 5, characterized in that: The trigger assembly includes a mounting shell fixedly connected to the inner wall of the mixing shell, one side of the mounting shell is penetrated by a push rod and is slidably connected, and the push rod extends to one end inside the mounting shell and is fixedly connected to the positive pole, one end inside the mounting shell is fixedly connected to a retaining frame, the middle position of the retaining frame is fixedly connected to the negative pole, one end of the negative pole is fixedly connected to a signal transceiver module, and the positive pole, negative pole and signal transceiver module are connected in series.

8. The portable bone adhesive vacuum mixing device for intraoperative use according to claim 1, characterized in that: Buckles are fixedly connected to the four corners of one end of the mixing shell, and slots are opened at the four corners of one end of the extraction shell. The extraction shell and the mixing shell are detachably connected through the buckles and the slots.

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