Grinding bone particle preparation device

Abstract

The present invention discloses a grinding type bone particle preparation device, which comprises a shell, a lower grinding disc, an upper grinding disc, a driving mechanism, a feeding pipe, a discharging channel and a discharging channel; an inner cavity is provided in the shell, the lower grinding disc is arranged in the inner cavity and fixedly connected to the shell, a bone grinding gap is formed between the upper grinding disc and the lower grinding disc, and the driving mechanism is used to drive the upper grinding disc to rotate; the feeding pipe is used to access and transport bone blocks to the bone grinding gap, the discharging channel is connected to the bone grinding gap and is used to discharge the bone crushing particles in the bone grinding gap to the bottom of the inner cavity, and the discharging channel is connected to the bottom of the inner cavity and is used to discharge the bone crushing particles located at the bottom of the inner cavity. The present invention can crush bone blocks into bone crushing particles, can improve the efficiency of crushing bone blocks, can improve the stability and uniformity of the size of bone crushing particles, and thus can improve the effect of surgical treatment, and is easy to use.

Description

Technical Field

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

[0002] In orthopedic surgery, it is often necessary to remove a small amount of bone from the patient's body and crush it into rice-sized bone fragments, and then place the bone fragments in the area where bone fusion and growth are required. Since the bone fragments are the patient's active fresh autologous bone, their effect is far better than artificial synthetic bone. For example, in spinal fusion surgery, implanting bone fragments into the intervertebral space can achieve fusion of the upper and lower vertebrae, while in scoliosis correction surgery, placing bone fragments in the lamina, articular process, transverse process and other parts of the back of the spine can achieve posterior lateral fusion of the spine.

[0003] Currently, bone fragments are mainly crushed by biting off and separating the bones one by one with rongeurs. Bone fragments usually need to be crushed into dozens or even hundreds of broken bone particles. Therefore, using rongeurs to crush bones is very time-consuming, labor-intensive and extremely inefficient. Moreover, rongeurs rely entirely on the feel of the hand when crushing bones, resulting in uneven sizes of the broken bones, with some of the broken bones being too large, which can affect bone growth and the effectiveness of surgical treatment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a grinding type bone particle preparation device, which can crush bone blocks into bone particles, improve the efficiency of crushing bone blocks, improve the stability and uniformity of the size of bone particles, thereby improving the effect of surgical treatment, and is easy to use.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a grinding type bone particle preparation device, which comprises:

[0006] A housing, wherein an inner cavity is provided in the housing;

[0007] A lower grinding disc disposed in the inner cavity and fixedly connected to the shell;

[0008] An upper grinding disc disposed in the inner cavity and forming a bone grinding gap with the lower grinding disc;

[0009] A driving mechanism connected to the housing and connected to the upper grinding disc, the driving mechanism being used to drive the upper grinding disc to rotate so that the upper grinding disc and the lower grinding disc grind the bone block in the bone grinding gap into bone fragments;

[0010] A feeding pipe connected to the upper grinding disc and in communication with the bone grinding gap, wherein the feeding pipe is used to receive and transport bone blocks into the bone grinding gap;

[0011] at least one discharge channel provided on the lower grinding disc, the discharge channel being in communication with the bone grinding gap and used for discharging the bone fragments in the bone grinding gap to the bottom of the inner cavity;

[0012] A discharge channel is provided at the lower end of the shell, and the discharge channel is communicated with the bottom of the inner cavity so as to discharge the broken bone particles located at the bottom of the inner cavity.

[0013] Furthermore, the lower end surface of the upper grinding disc and the upper end surface of the lower grinding disc are both provided with grooves for grinding the bone block.

[0014] Further, the lower end surface of the upper grinding disc is provided with a plurality of first groove groups distributed circumferentially with the center of the upper grinding disc as the center; wherein the first groove group includes a first main groove arranged along the radial direction of the upper grinding disc and at least one first auxiliary groove parallel to the first main groove, one end of the first main groove is located at the central part of the upper grinding disc, and the other end of the first main groove extends to the outer periphery of the upper grinding disc;

[0015] The upper end surface of the lower grinding disc is provided with a plurality of second groove groups distributed circumferentially with the center of the lower grinding disc as the center of the circle; wherein the second groove group includes a second main groove arranged along the radial direction of the lower grinding disc and at least one second auxiliary groove parallel to the second main groove, one end of the second main groove is located in the central part of the lower grinding disc, and the other end of the second main groove extends to the outer periphery of the lower grinding disc.

[0016] In order to further ensure the uniformity and stability of the size of the broken bone particles, the depth of the first main groove gradually decreases from the center of the upper grinding disc to the periphery of the upper grinding disc, and / or the depth of the second main groove gradually decreases from the center of the lower grinding disc to the periphery of the lower grinding disc.

[0017] A specific solution of the driving mechanism is further provided, and the driving mechanism comprises:

[0018] a drive motor directly or indirectly connected to the housing;

[0019] a drive block connected to an output shaft of the drive motor;

[0020] At least one connecting rod, one end of which is connected to the driving block, and the other end of which is connected to the upper grinding disc, so that the driving motor drives the driving block to rotate, and then drives the upper grinding disc to rotate through the connecting rod.

[0021] In order to facilitate access to the bone block, a feeding funnel for accessing the bone block is provided at the upper end of the feeding pipe, and the upper end of the feeding funnel extends to the outside of the inner cavity.

[0022] In order to facilitate the discharge of the broken bone particles at the bottom of the inner cavity, the discharge channel is arranged at the bottom of the shell, and the bottom of the shell is a conical structure with a larger upper part and a smaller lower part.

[0023] In order to further ensure the uniformity of the size of the crushed bone particles, a discharge filter for screening the crushed bone particles is detachably installed in the discharge channel, and / or a discharge valve for opening or closing the discharge channel is installed in the discharge channel.

[0024] In order to further flush the bone fragments at the bottom of the inner cavity, the lower end of the shell is also provided with a liquid inlet channel for receiving flushing liquid and a liquid outlet channel for discharging flushing liquid.

[0025] Furthermore, the liquid inlet channel is provided with an inlet valve for opening or closing the liquid inlet channel, and / or the liquid outlet channel is provided with an outlet valve for opening or closing the liquid outlet channel, and / or the liquid outlet channel is provided with an outlet filter for preventing bone fragments from being discharged from the liquid outlet channel.

[0026] After adopting the above technical solution, the bone blocks taken out of the patient's body are placed in the feeding funnel, and the bone blocks enter the bone grinding gap after passing through the feeding pipe; then the driving mechanism drives the upper grinding disc to rotate, and the upper grinding disc and the lower grinding disc grind the bone blocks in the bone grinding gap into broken bone particles. During the grinding process, the broken bone particles gradually move outward from the center of the lower grinding disc, and then the broken bone particles are discharged from the discharge channel to the bottom of the inner cavity. The flushing liquid enters the inner cavity from the liquid inlet channel and flushes the broken bone particles at the bottom of the inner cavity, and then the flushing liquid is discharged from the liquid outlet channel, and the flushed broken bone particles are discharged from the discharge channel. The whole process is simple to operate and easy to use, which greatly improves the efficiency of crushing bone blocks, saves time and labor, and the broken bone particles obtained by crushing are uniform and stable in size, which is conducive to bone growth, thereby improving the effect of surgical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the external structure of the grinding bone particle preparation device of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the grinding bone particle preparation device of the present invention;

[0029] Figure 3 It is a schematic diagram of the partial structure of the grinding bone particle preparation device of the present invention. DETAILED DESCRIPTION

[0030] 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.

[0031] like Figures 1 to 3 As shown, a grinding type bone particle preparation device comprises:

[0032] A housing 1, wherein an inner cavity 2 is provided in the housing 1;

[0033] A lower grinding disc 3 disposed in the inner cavity 2 and fixedly connected to the housing 1;

[0034] An upper grinding disc 4 is disposed in the inner cavity 2 and forms a bone grinding gap with the lower grinding disc 3;

[0035] A driving mechanism connected to the housing 1 and connected to the upper grinding disc 4, the driving mechanism being used to drive the upper grinding disc 4 to rotate so that the upper grinding disc 4 and the lower grinding disc 3 grind the bone blocks in the bone grinding gap into bone fragments;

[0036] A feeding pipe 5 connected to the upper grinding disc 4 and communicating with the bone grinding gap, wherein the feeding pipe 5 is used to receive and transport bone blocks into the bone grinding gap;

[0037] at least one discharge channel 6 provided on the lower grinding disc 3, the discharge channel 6 being connected to the bone grinding gap and used for discharging the bone fragments in the bone grinding gap to the bottom of the inner cavity 2;

[0038] A discharge channel 7 is provided at the lower end of the shell 1, and the discharge channel 7 is connected to the bottom of the inner cavity 2 so as to discharge the bone fragments at the bottom of the inner cavity 2; specifically, the bone fragments obtained by grinding the upper grinding disc 4 and the lower grinding disc 3 are finer, and the size is uniform and stable. In this embodiment, the upper grinding disc 4 and the lower grinding disc 3 are both circular structures, and an abutting step 21 for abutting against the lower end of the lower grinding disc 3 to support the lower grinding disc 3 is provided on the inner wall of the shell 1, and a slot 22 is provided on the outer peripheral wall of the lower grinding disc 3. A positioning clip 23 adapted to the slot 22 and used for snapping into the slot 22 is also provided on the inner wall of the shell 1, so that the lower grinding disc 3 is fixedly connected to the shell 1.

[0039] Specifically, there may be multiple discharge channels 6, all of which are evenly distributed on the outer periphery of the lower grinding disc 3. The feed pipe 5 is arranged at the center of the upper grinding disc 4 so that the bone blocks enter the bone grinding gap from the center of the upper grinding disc 4, and then the bone blocks gradually move outward during the grinding process. The discharge channels 6 are distributed on the outer periphery of the lower grinding disc 3 so that the broken bone particles can be fully ground and thus can be as small as possible.

[0040] like Figure 2 , 3As shown, the lower end surface of the upper grinding disc 4 and the upper end surface of the lower grinding disc 3 may be provided with grooves for grinding the bone block.

[0041] Specifically, the lower end surface of the upper grinding disc 4 is provided with a plurality of first groove groups distributed circumferentially with the center of the upper grinding disc 4 as the center; wherein the first groove group may include a first main groove arranged along the radial direction of the upper grinding disc 4 and at least one first auxiliary groove parallel to the first main groove, one end of the first main groove is located at the central part of the upper grinding disc 4, and the other end of the first main groove extends to the outer periphery of the upper grinding disc 4;

[0042] The upper end surface of the lower grinding disc 3 is provided with a plurality of second groove groups distributed circumferentially with the center of the lower grinding disc 3 as the center of the circle; wherein the second groove group may include a second main groove 8 arranged along the radial direction of the lower grinding disc 3 and at least one second auxiliary groove 9 parallel to the second main groove 8, one end of the second main groove 8 is located at the central part of the lower grinding disc 3, and the other end of the second main groove 8 extends to the outer periphery of the lower grinding disc 3. In this embodiment, the first groove group has 8 grooves uniformly distributed circumferentially with the center of the upper grinding disc 4 as the center of the circle, and in the same first groove group, the farther the distance between the first auxiliary groove and the first main groove is, the shorter the length of the first auxiliary groove is. The second groove group has 8 grooves uniformly distributed circumferentially with the center of the lower grinding disc 3 as the center of the circle, and in the same second groove group, the farther the distance between the second auxiliary groove 9 and the second main groove 8 is, the shorter the length of the second auxiliary groove 9 is.

[0043] In this embodiment, the depth of the first main groove gradually decreases from the center of the upper grinding disc 4 to the periphery of the upper grinding disc 4 , and the depth of the second main groove 8 gradually decreases from the center of the lower grinding disc 3 to the periphery of the lower grinding disc 3 .

[0044] like Figures 1 to 3 As shown, the driving mechanism is for example but not limited to the following structure, which includes:

[0045] A drive motor 10 directly or indirectly connected to the housing 1;

[0046] A driving block 11 connected to the output shaft of the driving motor 10;

[0047] At least one connecting rod 12, one end of the connecting rod 12 is connected to the driving block 11, and the other end of the connecting rod 12 is connected to the upper grinding disc 4, so that the driving motor 10 drives the driving block 11 to rotate, and then drives the upper grinding disc 4 to rotate through the connecting rod 12. In this embodiment, the driving motor 10 is connected to the housing 1 through a mounting frame, and the mounting frame includes a mounting plate 24, and the mounting plate 24 is connected to the top of the housing 1 through two mounting rods 25; specifically, two connecting rods 12 are provided, and the feed pipe 5 is located between the two connecting rods 12.

[0048] like Figure 1 , 2 As shown, the upper end of the feed pipe 5 is provided with a feed funnel 13 for receiving the bone block, and the upper end of the feed funnel 13 extends to the outside of the inner cavity 2; specifically, the bone block is placed in the feed funnel 13 and passes through the feed pipe 5 and then enters the bone grinding gap.

[0049] like Figure 1 , 2 As shown, the discharge channel 7 is arranged at the bottom of the shell 1, and the bottom of the shell 1 is a conical structure with a larger upper part and a smaller lower part, so as to discharge the broken bone particles located at the bottom of the inner cavity 2.

[0050] like Figure 1 , 2 As shown, a discharge filter 14 for screening the bone fragments is detachably installed in the discharge channel 7, and a discharge valve 15 for opening or closing the discharge channel 7 is installed in the discharge channel 7. Specifically, the discharge filter 14 can prevent the passage of larger bone fragments, thereby obtaining bone fragments of appropriate size; the discharge filter 14 with appropriate filter hole size can be selected according to the doctor's needs to meet different clinical use requirements.

[0051] like Figure 1 , 2 As shown, the lower end of the housing 1 may also be provided with an inlet channel 16 for receiving a flushing liquid and an outlet channel 17 for discharging the flushing liquid; in this embodiment, the flushing liquid enters the inner cavity 2 from the inlet channel 16 and flushes the bone fragments at the bottom of the inner cavity 2, and then the flushing liquid is discharged from the outlet channel 17; the inlet channel 16 and the outlet channel 17 are both provided on the side wall of the housing 1, and in the vertical direction, the inlet channel 16 is higher than the outlet channel 17. Specifically, when the flushing liquid flushes the bone fragments, the discharge valve 15 is closed, and the bone fragments flushed by the flushing liquid and screened by the discharge filter 14 can be used clinically.

[0052] like Figure 1 , 2As shown, the liquid inlet channel 16 is provided with a liquid inlet valve 18 for opening or closing the liquid inlet channel 16, the liquid outlet channel 17 is provided with a liquid outlet valve 19 for opening or closing the liquid outlet channel 17, and the liquid outlet channel 17 is provided with a liquid outlet filter 20 for preventing bone fragments from being discharged from the liquid outlet channel 17; specifically, the liquid inlet valve 18 and the liquid outlet valve 19 are used to control the inflow and outflow of flushing liquid.

[0053] The working principle of the present invention is as follows:

[0054] The bone blocks taken out of the patient's body are placed in the feeding funnel 13, and the bone blocks pass through the feeding pipe 5 and enter the bone grinding gap; then the driving mechanism drives the upper grinding disc 4 to rotate, and the upper grinding disc 4 and the lower grinding disc 3 grind the bone blocks in the bone grinding gap into broken bone particles. During the grinding process, the broken bone particles gradually move outward from the center of the lower grinding disc 3, and then the broken bone particles are discharged from the discharge channel 6 to the bottom of the inner cavity 2. The flushing liquid enters the inner cavity 2 from the liquid inlet channel 16 and flushes the broken bone particles at the bottom of the inner cavity 2, and then the flushing liquid is discharged from the liquid outlet channel 17, and the flushed broken bone particles are discharged from the discharge channel 7. The whole process is simple to operate and easy to use, which greatly improves the efficiency of crushing bone blocks, saves time and labor, and the broken bone particles obtained by crushing are uniform and stable in size, which is conducive to bone growth, thereby improving the effect of surgical treatment.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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 grinding type bone particle preparation device, characterized in that it include: A housing (1), wherein an inner cavity (2) is provided in the housing (1); a lower grinding disc (3) disposed in the inner cavity (2) and fixedly connected to the housing (1); an upper grinding disc (4) disposed in the inner cavity (2) and forming a bone grinding gap with the lower grinding disc (3); A driving mechanism connected to the housing (1) and connected to the upper grinding disc (4), the driving mechanism being used to drive the upper grinding disc (4) to rotate so that the upper grinding disc (4) and the lower grinding disc (3) grind the bone blocks in the bone grinding gap into bone fragments; a feeding pipe (5) connected to the upper grinding disc (4) and in communication with the bone grinding gap, wherein the feeding pipe (5) is used to receive and transport bone blocks into the bone grinding gap; a discharge channel (6) provided on the lower grinding disc (3), the discharge channel (6) being connected to the bone grinding gap and used for discharging the bone fragments in the bone grinding gap to the bottom of the inner cavity (2); a discharge channel (7) provided at the lower end of the shell (1), the discharge channel (7) being in communication with the bottom of the inner cavity (2) so as to discharge the bone fragments at the bottom of the inner cavity (2); There are a plurality of discharge channels (6), which are distributed on the outer periphery of the lower grinding disc (3), and the feed pipe (5) is arranged at the center of the upper grinding disc (4); Wherein, the lower end surface of the upper grinding disc (4) and the upper end surface of the lower grinding disc (3) are both provided with grooves for grinding the bone block; The lower end surface of the upper grinding disc (4) is provided with a plurality of first groove groups which are circumferentially distributed with the center of the upper grinding disc (4) as the center; the first groove group comprises a first main groove which is arranged along the radial direction of the upper grinding disc (4) and at least one first auxiliary groove which is parallel to the first main groove, one end of the first main groove is located at the central part of the upper grinding disc (4), and the other end of the first main groove extends to the outer periphery of the upper grinding disc (4); The upper end surface of the lower grinding disc (3) is provided with a plurality of second groove groups which are circumferentially distributed with the center of the lower grinding disc (3) as the center of the circle; the second groove group comprises a second main groove (8) arranged along the radial direction of the lower grinding disc (3) and at least one second auxiliary groove (9) parallel to the second main groove (8), one end of the second main groove (8) is located at the central part of the lower grinding disc (3), and the other end of the second main groove (8) extends to the outer periphery of the lower grinding disc (3); wherein the depth of the first main groove gradually decreases from the central portion of the upper grinding disc (4) to the outer periphery of the upper grinding disc (4), and the depth of the second main groove (8) gradually decreases from the central portion of the lower grinding disc (3) to the outer periphery of the lower grinding disc (3); Wherein, the driving mechanism comprises: A drive motor (10) directly or indirectly connected to the housing (1); A driving block (11) connected to the output shaft of the driving motor (10); At least one connecting rod (12), one end of the connecting rod (12) is connected to the driving block (11), and the other end of the connecting rod (12) is connected to the upper grinding disc (4), so that the driving motor (10) drives the driving block (11) to rotate, and then drives the upper grinding disc (4) to rotate through the connecting rod (12).

2. The grinding bone particle preparation device according to claim 1, characterized in that: A feeding funnel (13) for receiving bone blocks is provided at the upper end of the feeding pipe (5), and the upper end of the feeding funnel (13) extends to the outside of the inner cavity (2).

3. The grinding bone particle preparation device according to claim 1, characterized in that: The discharge channel (7) is arranged at the bottom of the shell (1), and the bottom of the shell (1) is a conical structure that is larger at the top and smaller at the bottom.

4. The grinding bone particle preparation device according to claim 1, characterized in that: A discharge filter (14) for screening the bone fragments is detachably installed in the discharge channel (7), and / or a discharge valve (15) for opening or closing the discharge channel (7) is installed in the discharge channel (7).

5. The grinding bone particle preparation device according to claim 1, characterized in that: The lower end of the housing (1) is also provided with a liquid inlet channel (16) for receiving flushing liquid and a liquid outlet channel (17) for discharging flushing liquid.

6. The grinding bone particle preparation device according to claim 5, characterized in that: The liquid inlet channel (16) is provided with a liquid inlet valve (18) for opening or closing the liquid inlet channel (16), and / or the liquid outlet channel (17) is provided with a liquid outlet valve (19) for opening or closing the liquid outlet channel (17), and / or the liquid outlet channel (17) is provided with a liquid outlet filter (20) for preventing bone fragments from being discharged from the liquid outlet channel (17).

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