Screening type bone particle preparation device

Abstract

The invention discloses a sieve-cut bone particle preparation device, which comprises a vertical cutting component for vertically cutting an inserted bone block and a horizontal cutting component for horizontally cutting the vertically cut bone block to form bone particles. The invention has good bone crushing effect and high bone crushing efficiency.

Description

Technical Field

[0001] The invention relates to a screening type bone particle preparation device. Background Art

[0002] At present, in orthopedic surgery, it is often necessary to remove a small amount of bone from some patients and crush it into rice-sized pieces, and then place it in the area where bone fusion and growth are needed. Since the bone pieces are the patient's active fresh autologous bone, their effect is far better than artificial granular artificial bone. Although autologous bone has certain damage to the bone removal site, it is widely used in clinical practice because of its many advantages such as fast growth and high fusion rate.

[0003] For example, in spinal fusion surgery, the autologous bone fragments can be implanted into the intervertebral space to achieve fusion of the upper and lower vertebrae, while in scoliosis correction surgery, they can be placed in the lamina, articular process, transverse process and other parts of the back of the spine to achieve lateral and posterior fusion of the spine.

[0004] The current treatment method mainly uses manual bone crushing, that is, the surgical assistant uses bone rongeurs to separate large bone blocks into small pieces. Since the broken particles can reach dozens or even hundreds, it is very time-consuming and laborious. Since the operation is completely dependent on the feel of the hand, the size of the bitten bones is uneven, and the particles are often too large, which will affect the growth of bones and the treatment effect after implantation. Therefore, in clinical practice, there is an urgent need for instruments that can easily cut fresh large bone blocks of patients into appropriate sizes.

[0005] Therefore, it is very necessary to provide an instrument that can conveniently cut large bone blocks and has good cutting effect. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a sieving type bone particle preparation device, which has good bone crushing effect and high bone crushing efficiency.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a screening type bone particle preparation device, which comprises:

[0008] A vertical cutting member for vertically cutting the inserted bone block;

[0009] A horizontal cutting component used for horizontally cutting a vertically cut bone block to form bone fragments.

[0010] Furthermore, the screening-type bone particle preparation device also includes a shell component, the vertical cutting component and the horizontal cutting component are at least partially installed on the shell component, and the shell component has a bone block inlet and a bone particle outlet. The bone block entering from the bone block inlet passes through at least a portion of the vertical cutting component and at least a portion of the horizontal cutting component, and the formed bone particles go out from the bone particle outlet.

[0011] Further, in order to flush the bone fragments, the shell component has a flushing cavity suitable for entering a flushing liquid to flush the bone fragments.

[0012] Furthermore, the shell component is provided with a liquid inlet and a liquid outlet respectively connected to the flushing cavity, the liquid inlet is suitable for introducing the flushing liquid into the flushing cavity, and the liquid outlet is suitable for leading the flushing liquid out of the flushing cavity.

[0013] Furthermore, in order to prevent the broken bone particles from flowing out of the flushing cavity from the liquid inlet and / or the liquid outlet, a partition net is provided on the liquid inlet and / or the liquid outlet to prevent the broken bone particles from flowing out of the flushing cavity.

[0014] Furthermore, a valve for controlling the inlet and outlet of flushing liquid is provided on the liquid inlet and / or the liquid outlet.

[0015] Furthermore, an opening and closing valve is provided on the bone crushing particle outlet.

[0016] Furthermore, in order to screen the excised bone fragments and obtain bone fragments that meet the required size, a sieve is provided on the bone fragment outlet, and the sieve is suitable for being replaced to adjust the sieve aperture so that bone fragments of corresponding size can be discharged from the bone fragment outlet.

[0017] Furthermore, the vertical cutting component comprises a cutting disc mounted on the housing component, at least a portion of the cutting disc is provided with a mesh cutting knife, and the bone block entering from the bone block inlet is pressed into the mesh cutting knife to complete the horizontal cutting.

[0018] Furthermore, the screening-type bone particle preparation device also includes a pressure-applying component for applying pressure to the bone block entering the bone block inlet and then entering the mesh cutting knife.

[0019] Furthermore, the pressure-applying component includes a power assembly, and the power assembly includes a push rod suitable for being driven to achieve reciprocating motion, and the push rod presses the bone block entering the bone block entrance toward the mesh cutting knife.

[0020] Furthermore, the horizontal cutting component includes two cutting blades, one end of which is hinged on the shell component, and the two cutting blades are suitable for swinging toward or away from each other around the hinge during operation to complete horizontal cutting of the bone block after vertical cutting.

[0021] Furthermore, the other ends of the two cutting blades extend out of the housing component and are provided with handles, and the two cutting blades are swung toward each other by operating the two handles;

[0022] Furthermore, an elastic element is provided between the two cutting blades, which is suitable for making the two cutting blades swing in opposite directions.

[0023] After adopting the above technical scheme, the bone block enters from the bone block entrance and reaches the mesh cutting knife. Under the action of the pressure component, the bone block is pressed toward the mesh cutting knife, and the mesh cutting knife vertically cuts the bone block. The bone block after vertical cutting enters the horizontal cutting component. In the horizontal cutting component, the two cutting blades are swung toward each other to complete the horizontal cutting of the bone block after vertical cutting to form bone fragments. After the bone fragments are flushed with flushing liquid in the flushing chamber, they are screened out from the bone fragment outlet. The above measures improve the bone crushing efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a stereoscopic diagram of the sieve-cut bone particle preparation device of the present invention;

[0025] Figure 2 It is a half-section stereoscopic view of the sieving and cutting type bone particle preparation device of the present invention. DETAILED DESCRIPTION

[0026] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0027] like Figure 1 , 2 As shown, a sieve-cut bone particle preparation device comprises:

[0028] A vertical cutting member for vertically cutting the inserted bone block;

[0029] A horizontal cutting component used for horizontally cutting a vertically cut bone block to form bone fragments.

[0030] like Figure 1 As shown, the screening type bone particle preparation device also includes a shell component 1, the vertical cutting component and the horizontal cutting component are at least partially installed on the shell component 1, and the shell component 1 has a bone block inlet 11 and a bone particle outlet 12. The bone block entering from the bone block inlet 11 passes through at least a portion of the vertical cutting component and at least a portion of the horizontal cutting component, and the formed bone particles go out from the bone particle outlet 12.

[0031] In this embodiment, the shell part 1 is a cylindrical body with a cylindrical structure, the bone block inlet 11 is arranged on the top cover of the cylinder, a cone can be arranged at the bone block inlet 11 to allow the bone block to enter the bone block inlet 11, the bone crushing particle outlet 12 is arranged at the bottom end of the cylinder, and the bottom of the cylinder can be set to a cone to allow the bone crushing particles to be concentrated at the bone crushing particle outlet 12. Of course, the bottom of the cylinder can also be set to a flat bottom.

[0032] Specifically, Figure 2 As shown, the housing part 1 has a flushing cavity 13 suitable for entering a flushing liquid to flush the bone fragments. In this embodiment, the flushing cavity is located at the middle bottom of the cylinder.

[0033] Specifically, Figure 2 As shown, the shell part 1 is provided with a liquid inlet 14 and a liquid outlet 15 which are respectively connected to the flushing cavity 13 , the liquid inlet 14 is suitable for introducing the flushing liquid into the flushing cavity 13 , and the liquid outlet 15 is suitable for leading the flushing liquid out of the flushing cavity 13 .

[0034] Specifically, Figure 2 As shown, a partition net 2 is provided on the liquid inlet 14 and the liquid outlet 15 to prevent the bone fragments from flowing out of the flushing cavity 13 .

[0035] Specifically, Figure 1 As shown, valves 3 for controlling the inflow and outflow of flushing liquid are provided on the liquid inlet 14 and the liquid outlet 15 .

[0036] Specifically, Figure 1 As shown, an opening and closing valve 4 is provided on the bone crushing particle outlet 12 .

[0037] Specifically, Figure 2 As shown, a screen 5 is provided on the bone crushing particle outlet 12 , and the screen 5 is suitable for being replaced to adjust the screen aperture so that the bone crushing particles of corresponding sizes can go out of the bone crushing particle outlet 12 .

[0038] Specifically, Figure 1 As shown, the vertical cutting component can be the following structure, which includes a cutting disk 6 installed on the shell part 1, at least part of the cutting disk 6 is provided with a mesh cutting knife 61, and the bone block entering from the bone block entrance 11 is pressed into the mesh cutting knife 61 to complete the horizontal cutting.

[0039] Specifically, Figure 1 As shown, the sieve-cut bone particle preparation device further includes a pressure-applying component for applying pressure to the bone block entering the bone block inlet 11 and then entering the mesh cutting knife 61 .

[0040] Specifically, Figure 1 As shown, the pressure component may be the following structure, which includes a power assembly 7, wherein the power assembly 7 includes a push rod 71 adapted to be driven to realize reciprocating motion, and the push rod 71 presses the bone block entering the bone block entrance 11 toward the mesh cutting knife 61. The power assembly 7 includes but is not limited to a piston cylinder.

[0041] Specifically, a bone block is put into the bone block entrance 11, and the power assembly 7 is actuated to apply pressure to the bone block by extending the push rod 71 into the bone block entrance 11, thereby pressing the bone block toward the mesh cutting knife 61, and the mesh cutting knife 61 vertically cuts the bone block.

[0042] Specifically, Figure 2As shown, the horizontal cutting component includes two cutting blades 8, one end of the two cutting blades 8 is hinged on the shell component 1, and the two cutting blades 8 are suitable for swinging toward or away from each other around the hinge during operation to complete horizontal cutting of the bone block after vertical cutting.

[0043] Specifically, the other ends of the two cutting blades 8 extend out of the housing component 1 and are provided with a handle 81, and the two cutting blades 8 are swung toward each other by operating the two handles 81;

[0044] An elastic element 9 is provided between the two cutting blades 8 and is suitable for making the two cutting blades 8 swing in opposite directions.

[0045] The handle 81 can be operated by hand, but it can also be operated by a power device.

[0046] The elastic element 9 may be a spring, and a slideway is specially provided on the housing component 1 for accommodating the spring.

[0047] In this embodiment, the bone block after vertical cutting is cut horizontally after the two cutting blades 8 are moved, thereby forming bone fragments. The bone fragments after horizontal cutting fall into the flushing cavity, and the flushing liquid flushes the bone fragments. The flushing liquid after flushing is released from the liquid outlet 15, and the flushed bone fragments go out from the bone fragment outlet 12. By replacing the screen 5, bone fragments of different sizes can be obtained, wherein the screen 5 can be customized according to the needs of clinicians to meet different clinical scenarios.

[0048] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0049] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0052] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A sieve-cut bone particle preparation device, characterized in that: It includes: A vertical cutting member for vertically cutting the inserted bone block; A horizontal cutting component for horizontally cutting the vertically cut bone block to form bone fragments; A shell component (1), the vertical cutting component and the horizontal cutting component are at least partially mounted on the shell component (1), the shell component (1) has a bone block inlet (11) and a bone crushing particle outlet (12), the bone block entering from the bone block inlet (11) passes through at least a portion of the vertical cutting component and at least a portion of the horizontal cutting component, and the formed bone crushing particles exit from the bone crushing particle outlet (12); The vertical cutting component comprises a cutting disk (6) mounted on the housing component (1), at least a portion of the cutting disk (6) being provided with a mesh cutting knife (61), and the bone block entering from the bone block inlet (11) is pressed into the mesh cutting knife (61) to complete horizontal cutting; It also includes a pressure-applying component for applying pressure to the bone block that has entered the bone block inlet (11) and then enters the mesh cutting knife (61); The pressure-applying component comprises a power assembly (7), the power assembly (7) comprises a push rod (71) adapted to be driven to achieve reciprocating motion, the push rod (71) presses the bone block entering the bone block entrance (11) toward the mesh cutting knife (61); The horizontal cutting component comprises two cutting blades (8), one end of the two cutting blades (8) is hinged on the shell component (1), and the two cutting blades (8) are suitable for swinging towards or away from each other around the hinge during operation to complete horizontal cutting of the bone block after vertical cutting; The other ends of the two cutting blades (8) extend out of the housing component (1) and are provided with handles (81), and the two cutting blades (8) are caused to swing towards each other by operating the two handles (81); An elastic element (9) is provided between the two cutting blades (8) and is suitable for causing the two cutting blades (8) to swing in opposite directions; The bone crushing particle outlet (12) is provided with a screen (5), and the screen (5) is suitable for being replaced to adjust the screen aperture so that bone crushing particles of corresponding sizes can be discharged from the bone crushing particle outlet (12).

2. The sieve-cut bone particle preparation device according to claim 1, characterized in that: The shell component (1) has a flushing cavity (13) suitable for entering a flushing liquid to flush the bone fragments.

3. The sieve-cut bone particle preparation device according to claim 2, characterized in that: The housing component (1) is provided with a liquid inlet (14) and a liquid outlet (15) respectively connected to the flushing cavity (13); the liquid inlet (14) is suitable for introducing flushing liquid into the flushing cavity (13), and the liquid outlet (15) is suitable for guiding the flushing liquid out of the flushing cavity (13) after flushing.

4. The sieve-cut bone particle preparation device according to claim 3, characterized in that: The liquid inlet (14) and / or the liquid outlet (15) is provided with a partition net (2) for preventing the bone fragments from flowing out of the flushing cavity (13); The liquid inlet (14) and / or the liquid outlet (15) are provided with a valve (3) for controlling the inflow and outflow of flushing liquid; An opening and closing valve (4) is provided on the bone fragment outlet (12).

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