阅读说明：本技术 一种脊柱外科手术用黄韧带刨削刀 (Ligamentum flavum planing knife for spinal surgery ) 是由 王成虎 于 2020-06-08 设计创作，主要内容包括：本发明公开了一种脊柱外科手术用黄韧带刨削刀,涉及医用刀具技术领域。本发明包括刀具、套筒、大转轴、壳体、握柄和挡板,套筒一端与大转轴一端面固定连接,大转轴另一端面卡扣连接有小转轴,小转轴一端固定连接有电机,电机安装在壳体内部,壳体一表面固定连接有握柄,握柄周侧面设置有防滑套,握柄一端面固定连接挡板,挡板一表面设置有开关；本发明通过使用配合块、配合槽、限位槽和挡块,使刀具可以通过配合块在限位槽内的配合进行刀具的替换,整个替换过程简单,方便操作,给医务人员带来了便利性；本发明通过使用粗牙面和细牙面,使刀具在旋转时可以提高刨削效果,并避免刀具刨削过于剧烈。(The invention discloses a ligamentum flavum planing knife for spinal surgery, and relates to the technical field of medical knives. The novel cutting tool comprises a cutting tool, a sleeve, a large rotating shaft, a shell, a grab handle and a baffle, wherein one end of the sleeve is fixedly connected with one end face of the large rotating shaft, the other end face of the large rotating shaft is connected with a small rotating shaft in a buckling mode, one end of the small rotating shaft is fixedly connected with a motor, the motor is installed in the shell, the grab handle is fixedly connected to one surface of the shell, an anti-skidding sleeve is arranged on the peripheral side face of the grab handle, one end face of the grab handle is; according to the invention, the matching block, the matching groove, the limiting groove and the stop block are used, so that the cutter can be replaced by matching the matching block in the limiting groove, the whole replacing process is simple, the operation is convenient, and convenience is brought to medical staff; the invention can improve the planing effect when the cutter rotates and avoid over-severe planing by using the coarse tooth surface and the fine tooth surface.)

1. The utility model provides a ligamentum flavum planing knife for spinal surgery, includes cutter (1), sleeve (3), big pivot (4), casing (7), grab handle (15) and baffle (9), its characterized in that:

one end of the sleeve (3) is fixedly connected with one end face of the large rotating shaft (4), the other end face of the large rotating shaft (4) is connected with the small rotating shaft (12) in a buckling mode, one end of the small rotating shaft (12) is fixedly connected with the motor (16), the motor (16) is installed inside the shell (7), one surface of the shell (7) is fixedly connected with the grab handle (15), the side face of the periphery of the grab handle (15) is provided with the anti-skidding sleeve (8), one end face of the grab handle (15) is fixedly connected with the baffle (9), and one surface of the baffle (9) is provided with the switch (11);

the side fixedly connected with fixed block (17) all around of cutter (1), fixed block (17) and sleeve (3) suit, a terminal surface fixedly connected with cooperation piece (19) of cutter (1).

2. The ligamentum flavum planing tool for spinal surgery as recited in claim 1, wherein a plurality of connecting rods (6) are fixedly connected to one end surface of the housing (7), a plurality of connecting blocks (14) are fixedly connected to one surface of each connecting rod (6), a plurality of annular grooves (5) are formed on the peripheral side surface of the large rotating shaft (4), and the annular grooves (5) are adapted to the connecting blocks (14).

3. The ligamentum flavum planing tool for spinal surgery as claimed in claim 1, wherein a reinforcing plate (13) is fixedly connected to the peripheral side of the small rotating shaft (12), and one end of the reinforcing plate (13) is connected with an end surface of the large rotating shaft (4) in a snap-fit manner.

4. The ligamentum flavum planing tool for spinal surgery is characterized in that a plurality of threaded rods (18) are arranged inside the large rotating shaft (4), the threaded rods (18) are rotatably matched with the large rotating shaft (4), one end of each threaded rod (18) is fixedly connected with an adjusting knob (10), the adjusting knob (10) is arranged on the end surface close to the shell (7), the other end of the worm shaft (18) is fixedly connected with a spring (22), and one end of the spring (22) is fixedly connected with a stop block (23).

5. The ligamentum flavum planing tool for spinal surgery is characterized in that a matching groove (20) is formed on one end surface of the large rotating shaft (4), a limiting groove (21) is formed on one side of the matching groove (20), the stop blocks (23) are arranged in the limiting groove (21), the matching blocks (19) are matched with the matching groove (20), and the matching blocks (19) are arranged in the limiting groove (21) and located between the stop blocks (23).

6. The ligamentum flavum planing tool for spinal surgery as claimed in claim 1, characterized in that the side of the tool (1) going to the head circumference is further provided with a coarse flank (101) and a fine flank (102).

7. The ligamentum flavum planing tool according to claim 1, wherein the motor (16) is electrically connected to the switch (11).

8. The ligamentum flavum planing tool for spinal surgery as claimed in claim 1, wherein the lateral surface of the sleeve (3) is fitted with a pin (2), the lateral surface of the fixing block (17) is provided with a pin hole, and one end of the pin (2) is fitted with the pin hole on the lateral surface of the fixing block (17).

Technical Field

The invention belongs to the technical field of medical cutters, and particularly relates to a ligamentum flavum planing cutter for spinal surgery.

Background

In the medical field, the ligamentum flavum is divided into two halves, the upper part is attached to the front lower part of the upper vertebral plate, the lower part is attached to the upper edge of the lower vertebral plate, and the inner edge of the ligament is provided with a small hole on the midline for the vein to pass through. The lateral border reaches the articular process, most developed in the lumbar region, and reaches the posterior border of the intervertebral foramen. The ligamentum flavum is thickened, so that the lumen of the vertebral canal can be reduced and the intervertebral foramen can be reduced, thereby pressing the spinal nerve root to generate clinical symptoms, and therefore, doctors can frequently shave the ligamentum flavum when treating patients.

The existing ligamentum flavum planing tool can replace planing tools of different models according to different requirements in the using process, however, the planing tool is complex in structure and inconvenient to replace, and inconvenience is brought to medical staff.

Disclosure of Invention

The invention aims to provide a ligamentum flavum planing tool for spinal surgery, which solves the problems that the existing ligamentum flavum planing tool is frequently used for replacing planing tools with different models according to different requirements in the using process, but the planing tool is complex in structure and inconvenient to replace.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a ligamentum flavum planing tool for spinal surgery, which comprises a tool, a sleeve, a large rotating shaft, a shell, a grab handle and a baffle plate, wherein the sleeve is arranged on the upper end of the tool;

one end of the sleeve is fixedly connected with one end face of the large rotating shaft, the other end face of the large rotating shaft is connected with the small rotating shaft in a buckling mode, one end of the small rotating shaft is fixedly connected with a motor, the motor is installed inside the shell, a grab handle is fixedly connected to one surface of the shell, an anti-skidding sleeve is arranged on the peripheral side face of the grab handle, one end face of the grab handle is fixedly connected with a baffle, and a switch is arranged on one surface of the baffle; in the structure, the motor can drive the small rotating shaft to rotate when rotating, then the small rotating shaft can drive the large rotating shaft to rotate, and the anti-slip sleeve can play an anti-slip role to increase the friction force between the palm and the grab handle.

The side surface of the periphery of the cutter is fixedly connected with a fixed block, the fixed block is adapted to the sleeve, and one end surface of the cutter is fixedly connected with a matching block; the fixed block can cooperate with the sleeve, plays the effect of supporting the cutter, can prevent moreover that the dust from getting into inside the sleeve.

Preferably, one end face of the shell is fixedly connected with a plurality of connecting rods, one surface of each connecting rod is fixedly connected with a plurality of connecting blocks, a plurality of annular grooves are formed in the circumferential side face of the large rotating shaft, and the annular grooves are matched with the connecting blocks; in the structure, the connecting rod can rotate along the annular groove, and the connecting rod can be connected with the shell and the large rotating shaft, so that the strength of the whole structure is improved.

Preferably, the circumferential side surface of the small rotating shaft is fixedly connected with a reinforcing plate, and one end of the reinforcing plate is connected with one end surface of the large rotating shaft in a buckling manner; the reinforcing plate can strengthen the strength of the small rotating shaft and prevent the fatigue fracture of the small rotating shaft.

Preferably, a plurality of threaded rods are arranged in the large rotating shaft, the threaded rods are in rotating fit with the large rotating shaft, one end of each threaded rod is fixedly connected with an adjusting knob, the adjusting knob is arranged on the end face close to the shell, the other end of the worm shaft is fixedly connected with a spring, and one end of the spring is fixedly connected with a stop block; in the structure, when the adjusting knob is rotated, the threaded rod can be driven to reciprocate in the large rotating shaft, the threaded rod can drive the spring to reciprocate, and the spring can drive the stop block to reciprocate.

Preferably, a matching groove is formed in one end face of the large rotating shaft, a limiting groove is formed in one side of the matching groove, the stop block is arranged in the limiting groove, the matching block is matched with the matching groove, and the matching block is arranged in the limiting groove and located between the stop blocks; in the structure, the matching block can pass through the matching groove, then the matching block can enter the limiting groove and extrude the stop block, the stop block can extrude the spring to shrink, then the matching block can rotate by a certain angle after the matching block bends to enter the limiting groove, the matching block is enabled to rotate to the position between the stop block, then the stop block rebounds under the action of the spring, the matching block is blocked, the movement of the matching block is limited, the matching block is fixed, further the cutter is fixed, and the structure can be used for replacing the cutter, and is convenient to install and disassemble.

Preferably, the side surface of the cutter reaching the head periphery is also provided with a coarse tooth surface and a fine tooth surface; when the cutter rotates, the coarse tooth surface can improve the planing effect, the fine tooth surface can avoid the cutter from planing too violently, and the vibration is reduced.

Preferably, the motor is electrically connected with a switch, and the motor can be turned on or off through the switch.

Preferably, the peripheral side surface of the sleeve is matched with a bolt, the peripheral side surface of the fixed block is provided with a pin hole, and one end of the bolt is matched with the pin hole on the peripheral side surface of the fixed block; in the structure, the bolt can fix the cutter and prevent the cutter and the sleeve from rotating relatively.

The invention has the following beneficial effects:

1. according to the invention, the matching block, the matching groove, the limiting groove and the stop block are used, so that the cutter can be replaced by matching the matching block in the limiting groove, the whole replacing process is simple, the operation is convenient, and convenience is brought to medical staff;

2. according to the invention, the coarse tooth surface and the fine tooth surface are used, so that the planing effect can be improved when the cutter rotates, and the over-severe planing of the cutter is avoided;

of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic three-dimensional view of a ligamentum flavum planing tool for spinal surgery according to the present invention;

FIG. 2 is a front view of a ligamentum flavum planing tool for spinal surgery in accordance with the present invention;

FIG. 3 is a top view of a ligamentum flavum planing tool for spinal surgery in accordance with the present invention;

FIG. 4 is a left side view of a ligamentum flavum planing tool for spinal surgery in accordance with the present invention;

FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 2;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is a cross-sectional view taken along plane C-C of FIG. 3;

FIG. 8 is a cross-sectional view taken along plane D-D of FIG. 7;

fig. 9 is an enlarged view of the area a in fig. 7.

In the drawings, the components represented by the respective reference numerals are listed below:

1-cutter, 101-coarse tooth surface, 102-fine tooth surface, 2-bolt, 3-sleeve, 4-large rotating shaft, 5-annular groove, 6-connecting rod, 7-shell, 8-anti-slip sleeve, 9-baffle, 10-adjusting knob, 11-switch, 12-small rotating shaft, 13-reinforcing plate, 14-connecting block, 15-grab handle, 16-motor, 17-fixed block, 18-threaded rod, 19-matching block, 20-matching groove, 21-limiting groove, 22-spring and 23-stop block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper," "middle," "outer," "inner," "around," and the positional relationships are used merely for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Referring to fig. 1-9, the present invention is a ligamentum flavum planing tool for spinal surgery, including a tool 1, a sleeve 3, a large rotating shaft 4, a housing 7, a handle 15 and a baffle 9;

one end of the sleeve 3 is fixedly connected with one end face of the large rotating shaft 4, the other end face of the large rotating shaft 4 is connected with the small rotating shaft 12 in a buckling mode, one end of the small rotating shaft 12 is fixedly connected with the motor 16, the motor 16 is installed inside the shell 7, a grab handle 15 is fixedly connected to one surface of the shell 7, an anti-skidding sleeve 8 is arranged on the peripheral side face of the grab handle 15, one end face of the grab handle 15 is fixedly connected with the baffle 9, and a switch 11 is arranged; in the structure, when the motor 16 rotates, the small rotating shaft 12 can be driven to rotate, then the small rotating shaft 12 can drive the large rotating shaft 4 to rotate, and in addition, the anti-slip sleeve 8 can play an anti-slip role, so that the friction force between the palm and the grab handle 15 is increased.

The peripheral side surface of the cutter 1 is fixedly connected with a fixed block 17, the fixed block 17 is adaptive to the sleeve 3, and one end surface of the cutter 1 is fixedly connected with a matching block 19; the fixing block 17 may be fitted with the sleeve 3, to play a role of supporting the cutter 1, and may prevent dust from entering the inside of the sleeve 3.

Wherein, one end face of the shell 7 is fixedly connected with a plurality of connecting rods 6, one surface of each connecting rod 6 is fixedly connected with a plurality of connecting blocks 14, the circumferential side face of the large rotating shaft 4 is provided with a plurality of annular grooves 5, and the annular grooves 5 are adapted to the connecting blocks 14; in the above structure, the connecting rod 6 can rotate along the annular groove 5, and the connecting rod 6 can be connected with the shell 7 and the large rotating shaft 4, so that the strength of the whole structure is improved.

Wherein, the peripheral side surface of the small rotating shaft 12 is fixedly connected with a reinforcing plate 13, and one end of the reinforcing plate 13 is connected with one end surface of the large rotating shaft 4 in a buckling way; the reinforcing plate 13 can reinforce the strength of the small rotary shaft 12 and prevent the small rotary shaft 12 from fatigue fracture.

The inner part of the large rotating shaft 4 is provided with a plurality of threaded rods 18, the threaded rods 18 are in running fit with the large rotating shaft 4, one end of each threaded rod 18 is fixedly connected with an adjusting knob 10, the adjusting knob 10 is arranged on the end face close to the shell 7, the other end of each threaded rod 18 is fixedly connected with a spring 22, and one end of each spring 22 is fixedly connected with a stop dog 23; in the structure, when the adjusting knob 10 is rotated, the threaded rod 18 can be driven to reciprocate in the large rotating shaft 4, the threaded rod 18 can drive the spring 22 to reciprocate, and the spring 22 can drive the stop 23 to reciprocate.

Wherein, a matching groove 20 is arranged on one end surface of the large rotating shaft 4, a limit groove 21 is arranged on one side of the matching groove 20, a stop block 23 is arranged in the limit groove 21, a matching block 19 is matched with the matching groove 20, and the matching block 19 is arranged in the limit groove 21 and is positioned between the stop blocks 23; in the structure, can pass through cooperation groove 20 when cooperation piece 19, then cooperation piece 19 can get into spacing groove 21 and extrude dog 23, dog 23 can extrude the shrink of spring 22, then can rotate certain angle after cooperation piece 19 gets into spacing groove 21, make cooperation piece 19 rotate to between the dog 23, then dog 23 kick-backs under spring 22's effect, block cooperation piece 19, restrict its removal, fixed cooperation piece 19, and then fixed cutter 1, this structure can be used for replacing the cutter, be convenient for installation and dismantlement.

Wherein, the side surface of the cutter 1 from the head to the periphery is also provided with a coarse tooth surface 101 and a fine tooth surface 102; when the cutter 1 rotates, the coarse tooth surface 101 can improve the planing effect, and the fine tooth surface 102 can avoid the cutter 1 from planing too violently, so as to reduce the vibration.

The motor 16 is electrically connected to the switch 11, and the motor 16 can be turned on or off through the switch 11.

Wherein, the peripheral side of the sleeve 3 is matched with a bolt 2, the peripheral side of the fixed block 17 is provided with a pin hole, and one end of the bolt 2 is matched with the pin hole on the peripheral side of the fixed block 17; in the structure, the bolt 2 can fix the cutter 1 and prevent the cutter 1 and the sleeve 3 from rotating relatively.

Referring to fig. 1-9, the present invention is a ligamentum flavum planing tool for spinal surgery, wherein the output power of the motor 16 is 0-1000W, and the using method thereof is as follows:

when needs installation cutter 1, pass sleeve 3 with the cooperation piece 19 of cutter 1 one end, cooperation piece 19 passes through cooperation groove 20 afterwards, then cooperation piece 19 can get into spacing groove 21 and extrude dog 23, dog 23 can extrude the shrink of spring 22, then can rotate certain angle after cooperation piece 19 gets into spacing groove 21, make cooperation piece 19 rotate to between the dog 23, then dog 23 kick-backs under spring 22's effect, block cooperation piece 19, restrict its removal, fixed cooperation piece 19, and then fixed cutter 1, insert sleeve 3 and fixed block 17 with bolt 2 at last and can accomplish the installation of cutter 1.

When the tool needs to be disassembled, firstly, the threaded rod 18 moves towards one side of the shell 7 through the adjusting knob 10, then the threaded rod 18 pulls the spring 22 to move, the spring 22 pulls the stop block 23 to move, when the stop block 23 is completely contracted into the inside of the large rotating shaft 4, the bolt 2 is disassembled, then the tool 1 can rotate in the sleeve 3 for a certain angle, so that the matching block 19 is driven to rotate to the position corresponding to the matching groove 20, and finally, the tool 1 can be disassembled by pulling the tool 1 outwards.

It should be noted that when the tool 1 is being shaved, the handle 15 can be held by hand and then the thumb can be pressed against the switch 11 to control the operation of the motor 16.

It should be further noted that the anti-slip cover 8 on the outer side of the handle 15 needs to be made of non-toxic material, so as to improve safety.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.