CN110811755A

CN110811755A - Bone planer

Info

Publication number: CN110811755A
Application number: CN201911080261.8A
Authority: CN
Inventors: 史惠忠
Original assignee: CHANGZHOU YONGHUA MEDICAL INSTRUMENT CO LTD
Current assignee: CHANGZHOU YONGHUA MEDICAL INSTRUMENT CO LTD
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-02-21

Abstract

The invention discloses a bone planer, which is structurally characterized in that: comprises a bottom plate, a tool apron, a bone planer, a bone box, a pressing block and a handle component. The tool apron is fixedly arranged on the bottom plate. The bone planing knife is rotatably arranged in the knife holder. The bone box is inserted in the tool apron, and the corresponding part is suspended in the bone planer. The tool apron is provided with a feed port which is positioned above the bone planer. The briquetting slides and sets up in the dog-house. The handle component drives the bone planer tool to rotate.

Description

Bone planer

Technical Field

The invention relates to the technical field of medical instruments, in particular to a bone planer for crushing bones in human interbody fusion surgery.

Background

The bone fragments are generally required in the spine fusion procedures that are common today. In spinal fusion procedures, it is necessary to cut bone removed from other parts of a patient and the resulting bone particles are used to fill and support the space between adjacent vertebrae for the purpose of healing and relieving the patient. At present, the broken bones used in the operation are partially cut or clamped into the broken bones with the needed size by using surgical scissors or surgical forceps, and the adoption of the mode not only wastes time and labor, but also has uneven broken bone particles, thereby influencing the operation effect. There are also some electric bone crushers, which are too noisy to be used in operating room environment and have particles of bone crushed uneven in size and difficult to control.

Disclosure of Invention

The invention aims to provide a bone planer which is simple in structure, convenient to use, low in noise and uniform in bone crushing.

The basic technical scheme for realizing the purpose of the invention is as follows: a bone planer, its structural feature is: comprises a bottom plate, a tool apron, a bone planer, a bone box, a pressing block and a handle component. The tool apron is fixedly arranged on the bottom plate. The bone planing knife is rotatably arranged in the knife holder. The bone box is inserted in the tool apron, and the corresponding part is suspended in the bone planer. The tool apron is provided with a feed port which is positioned above the bone planer. The briquetting slides and sets up in the dog-house. The handle component drives the bone planer tool to rotate.

The technical scheme based on the basic technical scheme is as follows: the tool apron comprises a fixed seat and an upper cover. The upper cover can be opened and closed and is fixedly arranged on the fixed seat to form a cylindrical cavity structure for accommodating the bone planer. The left end of the cutter holder is provided with a plug-in hole which runs through the inside and the outside of the cutter holder. The upper part of the upper cover is provided with a feeding port communicated with the cavity, and the feeding port is also the feeding port of the cutter holder.

The technical scheme based on the corresponding technical schemes is as follows: the fixing seat of the tool apron is fixedly arranged on the left part of the rear part of the bottom plate. The front part of the upper cover is hinged on the front part of the fixed seat through a pin shaft. The left side and the right side of the rear part of the upper cover are respectively provided with a clamping seat. The clamping seat is provided with a quick-mounting opening. The rear part of the upper cover is fixedly connected with the fixed seat through 2 groups of quick-release components. The 2 groups of quick-release components have the same structure and all comprise screw rods and nuts. One end of the screw rod is hinged to the fixed seat, and the rotating axis of the screw rod is horizontally arranged along the left and right directions. The nut is screwed on the upper end of the screw rod and is positioned in the corresponding clamping seat on the upper cover.

The technical scheme based on the corresponding technical schemes is as follows: the lower section of the inserting hole of the tool apron is U-shaped. The front side and the rear side of the plug hole are respectively provided with a limiting groove. The section of the bone-knitting box is U-shaped and corresponds to the U-shape of the insertion hole of the tool apron. The front side and the rear side of the left end of the bone-knitting box are respectively provided with a clamping block matched with the limiting groove on the tool apron.

The technical scheme based on the corresponding technical schemes is as follows: the method is characterized in that: the left part of the bone box is communicated with the inside and the outside.

The technical scheme based on the corresponding technical schemes is as follows: the left part of the bone box is provided with a handle.

The technical scheme based on the corresponding technical schemes is as follows: the bone planer is in a cylinder shape with a leftward opening. The right end of the bone planer tool is provided with a transmission connecting part, the middle part of the bone planer tool is provided with a blade part, and the left side and the right side of the blade part are provided with rotating supporting parts. The bone planing knife is rotatably arranged in the fixed seat and the upper cover by the rotating supporting part. The right end of the bone planer extends out of the fixed seat and the upper cover. The blade part of the bone planing knife is punched with a plurality of blades which protrude outwards along the radial direction through a blanking process. Bone leakage holes are formed on the inner sides of the blades.

The technical scheme based on the corresponding technical schemes is as follows: the periphery of the bone planer is provided with 9 rows of blades, and 3 rows are a group. The blades of each row are arranged along the axial direction of the bone planer. The three groups of blades are distributed in a circumferential array along the circumferential direction of the bone planer, and the 3 rows of blades in the same group are spirally arranged along the axial direction.

The technical scheme based on the corresponding technical schemes is as follows: the briquetting is established in the dog-house along upper and lower to sliding, and the downside of briquetting is equipped with anti-skidding tooth.

The technical scheme based on the corresponding technical schemes is as follows: the handle assembly comprises a handle, a lengthened handle and a lengthened handle seat. The handle is in transmission connection with the right end of the bone planer tool through a one-way bearing. The lengthened handle is coaxially screwed and fixed on the front end of the handle.

The invention has the following beneficial effects: (1) the bone planer has the advantages of simple structure, convenient use, manual operation and low noise during operation, and is suitable for being used in hospital environments. The blade of each row of same group is the spiral setting along the axial to adjacent two columns of blades in the week demonstrate crisscross setting in the axial, and last row increases 1 blade, makes the blade more at the ascending coverage of axial, and the broken bone granule that downcuts is more and the granule is more tiny even, and the follow-up use of being convenient for improves the utilization ratio greatly.

(2) The tool apron of the bone planer comprises a fixed seat and an upper cover which are fixedly connected through a quick-release assembly, and the tool apron is convenient to disassemble, assemble, disassemble, clean and disinfect.

(3) The anti-slip teeth are arranged on the pressing block of the bone planer, so that the bone can be prevented from rotating and slipping during bone planing, and the bone crushing efficiency is improved.

(4) The handle of the bone planer is in transmission connection with the right end of the bone planer tool through the one-way bearing, so that continuous operation can be realized, and the working efficiency is greatly improved.

(5) The bone planer is provided with the lengthened handle, so that labor is saved when the lengthened handle is used, the bone planer is convenient to operate by one hand, and the bone planer can be disassembled and stored when not used, so that the occupied space of equipment is reduced, and the bone planer is convenient to move, store and transport. Two clamping grooves are formed in the lengthened handle seat, and glass bead screws are arranged in the clamping grooves and used for limiting and fixing the lengthened handle in the radial direction; the lengthened handle is provided with two limiting rubber rings for limiting and fixing the lengthened handle in the axial direction, so that the lengthened handle is not easy to fall off in the transportation process.

(6) The section of the bone box of the bone planer is U-shaped and corresponds to the U-shaped inserting hole of the tool apron, so that the fixing seat can well guide and support the bone box and is convenient to mount; the front side and the rear side of the left end of the bone setting box are respectively provided with a clamping block matched with the limiting groove on the tool apron, so that the bone setting box is conveniently inserted and arranged in the tool apron for limiting, and the bone setting box is not easy to rotate to cause broken bones to scatter.

Drawings

Fig. 1 is a schematic structural view of the osteotome of the present invention.

Fig. 2 is a schematic top view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a right-side schematic view of fig. 1.

Fig. 5 is a schematic view when viewed from the front left upper side of fig. 1.

Fig. 6 is a schematic view as viewed from the upper right rear side of fig. 1.

Fig. 7 is a schematic sectional view a-a in fig. 2.

Fig. 8 is a schematic view of the base plate, the handle frame and the fixing base as viewed from the upper left front side of fig. 1.

Fig. 9 is a schematic structural view of the upper cover as viewed from the left front lower side of fig. 1.

Fig. 10 is a schematic structural view of the upper cover as viewed from the left rear upper side of fig. 1.

Fig. 11 is a schematic structural view of the bone box as viewed from the upper left front of fig. 1.

FIG. 12 is a schematic view of the structure of the briquette as viewed from the left front lower side of FIG. 1.

Fig. 13 is a schematic structural view of the osteotome as viewed from the front left upper side of fig. 1.

Fig. 14 is a schematic structural view of the osteotome as viewed from the upper right rear side of fig. 1.

Fig. 15 is a schematic view of the same set of 3 rows of blades of the osteotome helically arranged in the axial direction.

The reference numbers in the drawings are:

the bottom plate (1) is provided with a plurality of grooves,

a tool apron 2, a plug-in hole 2-1, a limit groove 2-11,

a fixed seat 21, a quick-release component 21-1, a screw 21-1a, a nut 21-1b,

an upper cover 22, a clamping seat 22-1, a quick-assembly opening 22-1a, a feeding port 22-2,

a bone planer knife 3, a blade 3-1, a bone leaking hole 3-2,

a bone setting box 4, a clamping block 4-1, a handle 4-2,

a pressing block 5, an anti-skid tooth 5-1,

the handle assembly 6, the handle 6-1, the lengthened handle 6-2, the limiting rubber ring 6-21, the lengthened handle seat 6-3 and the clamping groove 6-31.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. The orientation of the present invention is described according to the orientation shown in fig. 1, that is, the up-down and left-right directions shown in fig. 1 are the up-down and left-right directions described, and the side facing fig. 1 is the front side and the side facing away from fig. 1 is the rear side.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention or for simplifying the description, but do not indicate that a particular orientation must be present.

(example 1)

Referring to fig. 1 to 15, the bone planer of the present invention comprises a base plate 1, a tool holder 2, a bone planer tool 3, a bone box 4, a pressing block 5 and a handle assembly 6. The tool apron 2 is fixedly arranged on the bottom plate 1. The osteotome 3 is rotatably disposed in the holder 2. The bone box 4 is inserted into the tool holder 2, and the corresponding part is suspended in the bone planer 3 and is used for collecting the broken bones cut by the bone planer 3. A feeding port is arranged on the tool apron 2. A pressing block 5 is slidably arranged in the feeding opening for tightly contacting the bone to be cut with the osteotome 3. The handle assembly 6 is used for driving the bone planer knife 3 to rotate.

Referring to fig. 1 to 10, the holder 2 includes a holder 21 and an upper cover 22. The fixed seat 21 is fixedly arranged on the left part of the rear part of the bottom plate 1. The front part of the upper cover 22 is hinged on the front part of the fixed seat 21 through a pin shaft. The left and right sides of the rear part of the upper cover 22 are respectively provided with a clamping seat 22-1. The clamping seat 22-1 is provided with a quick-mounting opening 22-1 a. The rear part of the upper cover 22 is fixedly connected with the fixed seat 21 through 2 groups of quick-release components 21-1. The 2 groups of quick-release components 21-1 have the same structure and comprise screw rods 21-1a and nuts 21-1 b. One end of the screw rod 21-1a is hinged on the fixed seat 21, and the rotation axis of the screw rod is horizontally arranged along the left-right direction. The nut 21-1b is screwed on the upper end of the screw 21-1a and is positioned in the corresponding clamping seat 22-1 on the upper cover 22, so that the upper cover 22 is fixedly connected with the fixed seat 21. The upper cover 22 is fixedly connected on the fixed seat 21 to form a cylindrical cavity structure for accommodating the bone planer knife 4, the left end of the knife holder 2 is provided with an insertion hole 2-1 penetrating through the inside and the outside of the knife holder, and the lower section of the insertion hole 2-1 is U-shaped. The front side and the rear side of the plug hole 2-1 are respectively provided with a limit groove 2-11. The upper part of the upper cover 22 is provided with a feeding port 22-2 communicated with the cavity, and the feeding port 22-2 is also the feeding port of the tool apron 2.

Referring to fig. 7, 13, 14 and 15, the osteotome 3 is cylindrical with an open left side. The right end of the bone planer knife 3 is provided with a transmission connecting part 3a, the middle part is provided with a blade part 3b, and the left side and the right side of the blade part 3b are provided with a rotation supporting part 3 c. The osteotome 3 is rotatably disposed in the holder 21 and the upper cover 22 by the rotation support portion 3c thereof. The right end of the osteotome 3 extends out of the fixed seat 21 and the upper cover 22. The blade portion 3b of the osteotome 3 is punched with a plurality of blades 3-1 protruding radially outward therefrom by a blanking process. A bone leakage hole 3-2 is formed on the inner side of the blade 3-1. In the embodiment, 9 rows of blades 3-1 are arranged in the circumferential direction of the

osteotome

3, and 3 rows are arranged as a group. The blades 3-1 of each row are arranged along the axial direction of the bone planer 3. The number of the 3 rows of blades of the same group is four, four and five in turn. The three groups of blades 3-1 are distributed in a circumferential array along the circumferential direction of the bone planer 3, and the 3 rows of blades in the same group are spirally arranged along the axial direction, so that two rows of blades 3-1 adjacent to each other in the circumferential direction are staggered in the axial direction.

Referring to fig. 1 to 7 and 11, the bone box 4 has a U-shaped cross section corresponding to the U-shape of the insertion hole 2-1 of the tool holder 2. The left part of the bone box 4 is communicated with the inside and the outside, so that the received broken bones can be poured out conveniently. The front side and the rear side of the left end of the bone box 4 are respectively provided with a clamping block 4-1 which is matched with the limiting groove 2-11 on the tool apron 2. The left part of the bone box 4 is provided with a handle 4-2. Therefore, the bone box 4 is inserted into the tool apron 2, the corresponding part extends into the cavity of the tool apron 2 and is suspended into the bone planer 3, and the clamping block 4-1 of the bone box 4 is inserted into the limiting groove 2-11 on the tool apron 2.

Referring to fig. 1 to 7 and 12, the pressing block 5 is arranged in the feeding port 22-2 in a sliding manner along the up and down direction, and the lower side of the pressing block 5 is integrally in a cambered surface corresponding to the bone planer knife 3. The lower side of the pressing block 5 is provided with anti-skid teeth 5-1.

Referring to fig. 1-8, the handle assembly 6 includes a handle 6-1, an elongated handle 6-2 and an elongated handle mount 6-3. The handle 6-1 is in transmission connection with the right end of the osteotome 3 through a one-way bearing, so that the osteotome 3 can rotate by pulling the handle 6-1. The lengthened handle 6-2 is coaxially screwed and fixed on the front end of the handle 6-1. The lengthened handle seat 6-3 is fixedly arranged on the front part of the left part of the bottom plate 1, and when the lengthened handle 6-2 is detached from the handle 6-1, the lengthened handle seat 6-3 is used for accommodating and fixing the lengthened handle 6-2, so that the occupied space of the equipment is reduced, and the equipment is convenient to move, accommodate and transport. Two clamping grooves 6-31 are arranged on the lengthened handle seat 6-3, and glass bead screws (not shown in the figure) are arranged in the clamping grooves 6-31 and used for limiting and fixing the lengthened handle 6-2 in the radial direction. Two limiting rubber rings 6-21 are arranged on the lengthened handle 6-2, and the two limiting rubber rings 6-21 are respectively positioned at the left side and the right side of the same limiting groove 6-31 and are used for limiting and fixing the lengthened handle 6-2 in the axial direction.

When the bone planer is used, bones to be cut are firstly put into the feeding port 22-2, then the pressing block 5 is put into the feeding port 22-2, and the bones to be cut are pressed from top to bottom, so that the bones are contacted with the blades 3-1 of the bone planer 3. The handle 6-1 is pulled to rotate the bone planing knife 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 setting box 4 for collection.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bone planer, characterized in that: comprises a bottom plate, a cutter seat, a bone planer, a bone box, a pressing block and a handle component; the tool apron is fixedly arranged on the bottom plate; the bone planer is rotationally arranged in the cutter holder; the bone box is inserted in the tool apron, and the corresponding part is suspended in the bone planer; the tool apron is provided with a feeding port which is positioned above the bone planer; the pressing block is arranged in the feeding port in a sliding manner; the handle component drives the bone planer tool to rotate.

2. The osteotome defined in claim 1 wherein: the tool apron comprises a fixed seat and an upper cover; the upper cover can be opened and closed and is fixedly arranged on the fixed seat to form a cylindrical cavity structure for accommodating the bone planer; the left end of the tool apron is provided with a plug-in hole which runs through the inside and the outside of the tool apron; the upper part of the upper cover is provided with a feeding port communicated with the cavity, and the feeding port is also the feeding port of the cutter holder.

3. The osteotome defined in claim 2 wherein: the fixed seat of the tool apron is fixedly arranged on the left part of the rear part of the bottom plate; the front part of the upper cover is hinged to the front part of the fixed seat through a pin shaft; the left side and the right side of the rear part of the upper cover are respectively provided with a clamping seat; a quick-mounting opening is arranged on the clamping seat; the rear part of the upper cover is fixedly connected with the fixed seat through 2 groups of quick-release components. The 2 groups of quick-release components have the same structure and comprise screw rods and nuts; one end of the screw is hinged to the fixed seat, and the rotating axis of the screw is horizontally arranged along the left-right direction; the nut is screwed on the upper end of the screw rod and is positioned in the corresponding clamping seat on the upper cover.

4. The osteotome defined in claim 2 wherein: the lower section of the inserting hole of the tool apron is U-shaped; the front side and the rear side of the plug hole are respectively provided with a limiting groove; the section of the bone-knitting box is U-shaped and corresponds to the U-shape of the insertion hole of the tool apron; the front side and the rear side of the left end of the bone-knitting box are respectively provided with a clamping block matched with the limiting groove on the tool apron.

5. The osteotome defined in claim 4 wherein: the left part of the bone box is communicated with the inside and the outside.

6. The osteotome defined in claim 4 wherein: the left part of the bone box is provided with a handle.

7. The osteotome defined in claim 2 wherein: the bone planer is in a cylinder shape with a left opening; the right end of the bone planer is provided with a transmission connecting part, the middle part of the bone planer is provided with a blade part, and the left side and the right side of the blade part are provided with rotating supporting parts; the bone planing knife is rotatably arranged in the fixed seat and the upper cover by the rotating supporting part; the right end of the bone planer extends out of the fixed seat and the upper cover; punching a plurality of blades which protrude outwards along the radial direction of the blade part of the bone planing knife by a blanking process; bone leakage holes are formed on the inner sides of the blades.

8. The osteotome defined in claim 7 wherein: the periphery of the bone planer is provided with 9 rows of blades, and 3 rows are a group; each row of blades are arranged along the axial direction of the bone planer; the three groups of blades are distributed in a circumferential array along the circumferential direction of the bone planer, and the 3 rows of blades in the same group are spirally arranged along the axial direction.

9. The osteotome defined in claim 1 wherein: the briquetting is established in the dog-house along upper and lower to sliding, and the downside of briquetting is equipped with anti-skidding tooth.

10. The osteotome defined in claim 1 wherein: the handle assembly comprises a handle, a lengthened handle and a lengthened handle seat; the handle is in transmission connection with the right end of the bone planer tool through a one-way bearing; the lengthened handle is coaxially screwed and fixed on the front end of the handle.