Bone planer

Abstract

The present invention discloses a bone planer, which has the structural characteristics of comprising a base plate, a knife seat, a bone planer, a bone setting box, a pressure block and a handle assembly. The knife seat is fixedly arranged on the base plate. The bone planer is rotatably arranged in the knife seat. The bone setting box is inserted in the knife seat, and the corresponding part is suspended in the bone planer. A feeding port is arranged on the knife seat, and the feeding port is located above the bone planer. The pressure block is slidably arranged in the feeding port. The handle assembly drives the bone planer to rotate.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a bone planer used for breaking bones in human intervertebral fusion surgery. Background Art

[0002] Bone crushing is usually required in common spinal fusion surgeries. In spinal fusion surgery, bones taken from other parts of the patient need to be chopped up, and the resulting bone crushing particles are used to fill and support between adjacent vertebrae so that the patient can achieve the purpose of healing and relief. Currently, part of the bone crushing used in surgery is done by cutting or clamping the bones into bone crushing of the required size with surgical scissors or surgical forceps. This method is not only time-consuming and labor-intensive, but also the bone crushing particles are uneven, affecting the effect of the surgery. There are also some electric bone crushers, which make too much noise when working and are not suitable for use in an operating room environment. In addition, the particle size of the bone crushing is uneven and difficult to control. Summary of the invention

[0003] The purpose of the present invention is to provide a bone planer which has a simple structure, is easy to use, has low noise and can crush bones more evenly.

[0004] The basic technical scheme for achieving the purpose of the present invention is: a bone planer, which has the following structural features: it includes a base plate, a knife seat, a bone planer, a bone box, a pressure block and a handle assembly. The knife seat is fixedly arranged on the base plate. The bone planer is rotatably arranged in the knife seat. The bone box is inserted into the knife seat, and the corresponding part is suspended in the bone planer. A feeding port is provided on the knife seat, and the feeding port is located above the bone planer. The pressure block is slidably arranged in the feeding port. The handle assembly drives the bone planer to rotate.

[0005] The technical solution based on the above basic technical solution is: the knife seat includes a fixed seat and an upper cover. The upper cover can be opened and closed and fixedly arranged on the fixed seat to form a cylindrical cavity structure for accommodating the bone planer. The left end of the knife seat is provided with a plug hole that passes through the inside and outside of the knife seat. The upper part of the upper cover is provided with a feeding port connected to the cavity, and the feeding port is also the feeding port of the knife seat.

[0006] The technical solution based on the above-mentioned corresponding technical solutions is: the fixing seat of the knife holder is fixedly set on the left rear part of the bottom plate. The front part of the upper cover is hingedly connected to the front part of the fixing seat through a pin shaft. A clamping seat is provided on each of the left and right sides of the rear part of the upper cover. A quick-release opening is provided on the clamping seat. The rear part of the upper cover is fixedly connected to the fixing seat through two groups of quick-release components. The two groups of quick-release components have the same structure and both include a screw and a nut. One end of the screw is hingedly connected to the fixing seat, and its rotation axis is horizontally set in the left and right directions. The nut is screwed on the upper end of the screw and is located in the corresponding clamping seat on the upper cover.

[0007] The technical solution based on the above-mentioned corresponding technical solutions is: the lower cross section of the insertion hole of the knife holder is U-shaped. A limiting groove is provided on the front and rear sides of the insertion hole. The cross section of the bone box is U-shaped, corresponding to the U-shape of the insertion hole of the knife holder. A clamping block is provided on the front and rear sides of the left end of the bone box to match the limiting groove on the knife holder.

[0008] The technical solution based on the above corresponding technical solutions is characterized in that the left part of the bone box is communicated with the inside and outside.

[0009] The technical solution based on the above corresponding technical solutions is: a handle is provided on the left part of the bone box.

[0010] The technical scheme based on the above-mentioned corresponding technical schemes is as follows: the bone planer is in the shape of a cylinder with an opening facing left. A transmission connection part is provided at the right end of the bone planer, a blade part is provided in the middle, and rotation support parts are provided on the left and right sides of the blade part. The bone planer is rotatably arranged in the fixed seat and the upper cover by its rotation support part. The right end of the bone planer extends out of the fixed seat and the upper cover. A plurality of blades protruding outward in the radial direction are punched out of the blade part of the bone planer by a punching process. A bone leakage hole is formed on the inner side of the blade.

[0011] The technical solution based on the above-mentioned corresponding technical solutions is: a total of 9 rows of blades are arranged in the circumferential direction of the bone planer, and 3 rows form a group. Each row of blades is arranged along the axial direction of the bone planer. The three groups of blades are distributed in a circumferential array along the circumference of the bone planer, and the 3 rows of blades in the same group are arranged in a spiral along the axial direction.

[0012] The technical solution based on the above-mentioned corresponding technical solutions is that the pressing block is slidably arranged in the feeding port along the up-down direction, and the lower side of the pressing block is provided with anti-slip teeth.

[0013] The technical solution based on the above corresponding technical solutions is: the handle assembly includes a handle, an extended handle and an extended handle seat. The handle is transmission-connected to the right end of the bone planer through a one-way bearing. The extended handle is coaxially screwed and fixed on the front end of the handle.

[0014] The present invention has the following beneficial effects: (1) The bone planer of the present invention has a simple structure, is easy to use, is manually operated, has low noise during operation, and is suitable for use in a hospital environment. The blades of each row of the same group are arranged in a spiral along the axial direction, so that the blades of two rows adjacent to each other in the circumferential direction are arranged in a staggered manner in the axial direction, and one blade is added to the last row, so that the blades cover a larger area in the axial direction, and the bone particles cut off are more numerous and the particles are more fine and uniform, which is convenient for subsequent use and greatly improves the utilization rate.

[0015] (2) The blade holder of the bone planer of the present invention comprises a fixed seat and an upper cover, which are fixedly connected by a quick-release assembly, and are convenient for disassembly and installation, and for disassembly, cleaning and disinfection.

[0016] (3) The pressing block of the bone planer of the present invention is provided with anti-skid teeth, which can prevent the bone from rotating and slipping during planing, thereby improving the bone crushing efficiency.

[0017] (4) The handle of the bone planer of the present invention is connected to the right end of the bone planer through a one-way bearing, which can achieve continuous operation and greatly improve work efficiency.

[0018] (5) The bone planer of the present invention is provided with an extended handle, which is more labor-saving when used and is convenient for one-handed operation. It can be removed and stored when not in use, thereby reducing the space occupied by the device and facilitating movement, storage and transportation. Two clamping grooves are provided on the extended handle seat, and glass bead screws are provided in the clamping grooves to limit and fix the extended handle in the radial direction; two limiting rubber rings are provided on the extended handle to limit and fix the extended handle in the axial direction, thereby ensuring that the extended handle is not easy to fall off during transportation.

[0019] (6) The cross-section of the bone box of the bone planer of the present invention is U-shaped, which corresponds to the U-shape of the insertion hole of the knife seat, so that the fixed seat can guide and support the bone box well, which is convenient for installation; the front and rear sides of the left end of the bone box are respectively provided with a clamping block that matches the limiting groove on the knife seat, so that the bone box is easy to be inserted and set in the knife seat for limiting, and the bone box is not easy to rotate and cause the broken bones to scatter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the bone planer of the present invention.

[0021] Figure 2 for Figure 1 Schematic top view of .

[0022] Figure 3 for Figure 1 Schematic diagram of the left side.

[0023] Figure 4 for Figure 1 Schematic diagram of the right side.

[0024] Figure 5 For Figure 1 Schematic diagram when viewed from the upper left front.

[0025] Figure 6 For Figure 1 Schematic diagram when viewed from the upper right rear.

[0026] Figure 7 for Figure 2 AA section diagram in.

[0027] Figure 8 For Figure 1 Schematic diagram of the base plate, handle frame and fixing base when viewed from the upper left front.

[0028] Fig. 9 For Figure 1 Schematic diagram of the structure of the upper cover when observed from the lower left front.

[0029] Fig.10 For Figure 1 Schematic diagram of the structure of the upper cover when viewed from the upper left rear.

[0030] Fig.11 For Figure 1 Schematic diagram of the structure of the bone box when viewed from the upper left front.

[0031] Fig.12 For Figure 1 Schematic diagram of the structure of the pressing block when viewed from the lower left front.

[0032] Fig.13 For Figure 1 Schematic diagram of the structure of the bone planer when viewed from the upper left front.

[0033] Fig.14 For Figure 1 Schematic diagram of the structure of the bone planer when viewed from the upper right rear.

[0034] Fig.15 The schematic diagram is a structural diagram of a bone planer in which three rows of blades in the same group are arranged spirally along the axial direction.

[0035] The reference numerals in the accompanying drawings are:

[0036] Bottom plate 1,

[0037] Knife seat 2, plug hole 2-1, limit slot 2-11,

[0038] Fixed seat 21, quick release assembly 21-1, screw rod 21-1a, nut 21-1b,

[0039] Upper cover 22, card seat 22-1, quick-install opening 22-1a, feeding port 22-2,

[0040] Bone planer 3, blade 3-1, bone hole 3-2,

[0041] Bone box 4, clamping block 4-1, handle 4-2,

[0042] Press block 5, anti-slip teeth 5-1,

[0043] Handle assembly 6, handle 6-1, extended handle 6-2, limiting rubber ring 6-21, extended handle seat 6-3, and snap-in groove 6-31. DETAILED DESCRIPTION

[0044] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings. Figure 1 The direction shown is carried out, that is, Figure 1 The up, down, left, and right directions shown are the up, down, left, and right directions described. Figure 1 The direction is forward, away from Figure 1 The side that is at the rear is the one at the rear.

[0045] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] It should be understood that terms such as "upper", "lower", "inside" and "outside" to indicate directions or positional relationships are based on the positional relationships described in the drawings and are only used to facilitate the description of the present invention or simplify the description, rather than to indicate a specific direction that must be possessed.

[0047] (Example 1)

[0048] See Figures 1 to 15 The bone planer of the present invention comprises a base plate 1, a knife seat 2, a bone planer 3, a bone setting box 4, a pressing block 5 and a handle assembly 6. The knife seat 2 is fixedly arranged on the base plate 1. The bone planer 3 is rotatably arranged in the knife seat 2. The bone setting box 4 is inserted in the knife seat 2, and the corresponding part is suspended in the bone planer 3, which is used to collect the broken bones cut by the bone planer 3. A feeding port is provided on the knife seat 2. The pressing block 5 is slidably arranged in the feeding port, which is used to make the bone to be chopped and the bone planer 3 in close contact. The handle assembly 6 is used to drive the bone planer 3 to rotate.

[0049] See Figures 1 to 10The knife holder 2 includes a fixed seat 21 and an upper cover 22. The fixed seat 21 is fixedly arranged on the left rear portion of the base plate 1. The front portion of the upper cover 22 is hingedly connected to the front portion of the fixed seat 21 through a pin shaft. A clamping seat 22-1 is provided on each of the left and right sides of the rear portion of the upper cover 22. A quick-release opening 22-1a is provided on the clamping seat 22-1. The rear portion of the upper cover 22 is fixedly connected to the fixed seat 21 through two groups of quick-release components 21-1. The two groups of quick-release components 21-1 have the same structure and both include a screw 21-1a and a nut 21-1b. One end of the screw 21-1a is hingedly connected to the fixed seat 21, and its rotation axis is horizontally arranged in the left-right direction. The nut 21-1b is screwed onto the upper end of the screw 21-1a and is located in the corresponding clamping seat 22-1 on the upper cover 22, thereby fixing the upper cover 22 to the fixed seat 21. The upper cover 22 is fixedly connected to the fixed seat 21 to form a cylindrical cavity structure for accommodating the bone planer 4. The left end of the knife seat 2 is provided with a plug hole 2-1 that passes through the inside and outside of the knife seat 2. The lower cross section of the plug hole 2-1 is U-shaped. A limit groove 2-11 is provided on both sides of the front and rear of the plug hole 2-1. A feeding port 22-2 connected to the cavity is provided on the upper part of the upper cover 22. The feeding port 22-2 is also the feeding port of the knife seat 2.

[0050] See Figure 7 , Fig.13 , Fig.14 and Fig.15 , the bone planer 3 is cylindrical with its opening facing left. The right end of the bone planer 3 is provided with a transmission connection part 3a, the middle part is provided with a blade part 3b, and the left and right sides of the blade part 3b are provided with a rotation support part 3c. The bone planer 3 is rotatably set in the fixed seat 21 and the upper cover 22 by its rotation support part 3c. The right end of the bone planer 3 extends out of the fixed seat 21 and the upper cover 22. A plurality of blades 3-1 protruding radially outward are punched out of the blade part 3b of the bone planer 3 by a punching process. A bone leakage hole 3-2 is formed on the inner side of the blade 3-1. In this embodiment, a total of 9 rows of blades 3-1 are arranged along the circumference of the bone planer 3, and 3 rows form a group. Each row of blades 3-1 is arranged axially along the bone planer 3. The number of 3 rows of blades in the same group is four, four and five respectively. The three groups of blades 3-1 are distributed in a circumferential array along the circumference of the bone planer 3, and the 3 rows of blades in the same group are arranged spirally along the axial direction, so that the two rows of blades 3-1 adjacent to each other in the circumferential direction are staggered in the axial direction.

[0051] See Figures 1 to 7 and Fig.11The cross section of the bone box 4 is U-shaped, corresponding to the U-shape of the plug hole 2-1 of the knife holder 2. The left part of the bone box 4 is connected inside and outside, which is convenient for pouring out the received broken bones. A clamping block 4-1 is provided on each of the front and back sides of the left end of the bone box 4, which matches the limiting groove 2-11 on the knife holder 2. A handle 4-2 is provided on the left part of the bone box 4. Thus, the bone box 4 is inserted and set in the knife holder 2, and the corresponding part extends into the cavity of the knife holder 2, and extends into the bone planer 3 in the air, and the clamping block 4-1 of the bone box 4 is inserted into the limiting groove 2-11 on the knife holder 2.

[0052] See Figures 1 to 7 and Fig.12 The pressing block 5 is slidably arranged in the feeding port 22-2 in the up-down direction, and the lower side of the pressing block 5 is an arc surface corresponding to the bone planing knife 3. The lower side of the pressing block 5 is provided with anti-slip teeth 5-1.

[0053] See Figures 1 to 8 The handle assembly 6 includes a handle 6-1, an extended handle 6-2 and an extended handle seat 6-3. The handle 6-1 is transmission-connected to the right end of the bone planer 3 via a one-way bearing, so that the bone planer 3 can be rotated by pulling the handle 6-1. The extended handle 6-2 is coaxially screwed and fixed on the front end of the handle 6-1. The extended handle seat 6-3 is fixedly arranged on the left front part of the base plate 1. When the extended handle 6-2 is removed from the handle 6-1, the extended handle seat 6-3 is used to store and fix the extended handle 6-2, thereby reducing the occupied space of the equipment and facilitating movement, storage and transportation. The extended handle seat 6-3 is provided with two snap-in grooves 6-31, and the snap-in grooves 6-31 are provided with glass bead screws (not shown in the figure) for limiting and fixing the extended handle 6-2 in the radial direction. The extended handle 6-2 is provided with two limiting rubber rings 6-21, which are respectively located on the left and right sides of the same limiting groove 6-31, and are used to limit and fix the extended handle 6-2 in the axial direction.

[0054] When the bone planer of the present invention is used, the bone to be chopped is first put into the feeding port 22-2, and then the pressing block 5 is placed in the feeding port 22-2, and the bone to be chopped is pressed from top to bottom, so that the bone contacts the blade 3-1 of the bone planer 3. The handle 6-1 is pulled to rotate the bone planer 3, so that the blade 3-1 cuts and scrapes the corresponding part of the bone, and the broken bone falls from the bone leakage hole 3-2 to the bone box 4 for collection.

[0055] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is 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.

Claims

1. A bone planer, characterized in that: It comprises a bottom plate, a knife seat, a bone planer, a bone setting box, a pressing block and a handle assembly; the knife seat is fixedly arranged on the bottom plate; the bone planer is rotatably arranged in the knife seat; the bone setting box is inserted in the knife seat, and the corresponding part is suspended in the bone planer; a feeding port is arranged on the knife seat, and the feeding port is located above the bone planer; the pressing block is slidably arranged in the feeding port; the handle assembly is manually operated to drive the bone planer to rotate; The knife seat comprises a fixed seat and an upper cover; the upper cover can be opened and closed and fixedly arranged on the fixed seat to form a cylindrical cavity structure for accommodating the bone planing knife; a plug-in hole penetrating the inside and outside of the knife seat is provided at the left end; a feeding port connected to the cavity is provided at the upper part of the upper cover, and the feeding port is also the feeding port of the knife seat; The bone planer is in the shape of a cylinder with an opening facing left; a transmission connection part is provided at the right end of the bone planer, a blade part is provided in the middle, and rotation support parts are provided on the left and right sides of the blade part; the bone planer is rotatably arranged in a fixed seat and an upper cover by its rotation support part; the right end of the bone planer extends out of the fixed seat and the upper cover; a plurality of blades protruding outward in the radial direction are punched out on the blade part of the bone planer by a punching process; a bone leakage hole is formed on the inner side of the blade; There are a total of 9 rows of blades in the circumferential direction of the bone planer, with 3 rows in one group; each row of blades is arranged along the axial direction of the bone planer; the three groups of blades are distributed in a circular array along the circumference of the bone planer, and the 3 rows of blades in the same group are arranged in a spiral along the axial direction, and 1 blade is added to the last row.

2. The bone planer according to claim 1, characterized in that: The fixing seat of the knife holder is fixedly arranged on the left rear part of the bottom plate; the front part of the upper cover is hingedly connected to the front part of the fixing seat through a pin shaft; a clamping seat is respectively provided on the left and right sides of the rear part of the upper cover; a quick-release opening is provided on the clamping seat; the rear part of the upper cover is fixedly connected to the fixing seat through two sets of quick-release components; The two sets of quick-release components have the same structure, both including a screw and a nut; one end of the screw is hingedly connected to the fixed seat, and its rotation axis is horizontally arranged in the left and right directions; the nut is screwed on the upper end of the screw and is located in the corresponding clamping seat on the upper cover.

3. The bone planer according to claim 1, characterized in that: The lower cross-section of the insertion hole of the knife seat is U-shaped; a limiting groove is provided on each of the front and rear sides of the insertion hole; the cross-section of the bone box is U-shaped, corresponding to the U-shape of the insertion hole of the knife seat; a clamping block is provided on each of the front and rear sides of the left end of the bone box, which matches the limiting groove on the knife seat.

4. The bone planer according to claim 3, characterized in that: The left part of the bone box is connected inside and outside.

5. The bone planer according to claim 3, characterized in that: There is a handle on the left side of the bone box.

6. The bone planer according to claim 1, characterized in that: The pressing block is arranged in the feeding port to slide in the up-down direction, and the lower side of the pressing block is provided with anti-slip teeth.

7. The bone planer according to claim 1, characterized in that: The handle assembly comprises a handle, an extended handle and an extended handle seat; the handle is transmission-connected with the right end of the bone planer through a one-way bearing; and the extended handle is coaxially screwed and fixed on the front end of the handle.

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