KR20000072730A - surgical cast cutter - Google Patents

Abstract

PURPOSE: Surgical plaster cutter is provided which doesn't need a separate device to unfold cut plaster in eliminating plaster from the diseased part so that it reduces time in removing plaster. CONSTITUTION: The surgical plaster cutter comprises the parts of: a first housing which contains a motor, a transmission(5) to change the speed of a first output axis(5a), a first penetration hole, a second output axis(11) and a set of bevel gears(10) which transform the rotation of the transmission on the center of the first output axis into that of the transmission on the center of the second output axis; a second housing(15) which contains a projection part(16) wherein a first and a second section(16a, 16b) are formed in a parallel and vertical way with an end mill(2); and a first and a second binding device(19, 20) which bind the first housing with the second housing.

Description

Surgical cast cutter

FIELD OF THE INVENTION The present invention relates to surgical instruments, and more particularly, to surgical gypsum cutters for removing orthopedic bandages of the hard mold material type.

Various devices and methods have been developed to remove gypsum from the affected area of the patient. For example, chainsaws with rotating or oscillating blades have been used to remove the cuffs from the affected part of the patient.

Such chainsaws have proved totally unsatisfactory for a variety of reasons. More specifically, such a chain saw is intended for patients with cuffs that are removed from the affected areas due to the proximity of the rotating or vibrating blades to the affected areas and due to the noise and dust generated when the chain saw cuts through them. Frequent shocks. This disadvantage occurs especially when the patient is a child.

In addition, such a chain saw cuts through the gif completely, taking care not to contact the affected area with the rotating or vibrating blade, and then removes the cuff from the affected area using a separate mechanism for spreading the cut off. It is not preferable because it is necessary.

The reason is that the worker who cuts the cuffs with the chainsaw performs the work slowly and deeply in order not to shock or hurt the patient, and then puts a separate device in the gap of the cut cuffs to open the cuffs. This makes the cutting work inefficient.

It is a first object of the present invention to provide a gift cutter which does not shock or hurt the patient when removing the gift from the affected part.

It is also a second object of the present invention to provide a GIFS cutter having a device capable of collecting dust when removing the GIFS from the affected part.

In addition, it is a third object of the present invention to provide a GIFS cutter capable of shortening the time for removing a GIFS by eliminating a separate device for opening the cut GIFS when removing the GIFS from the affected part. .

1 is a perspective view of a main part of a cuff cutter according to the present invention;

2 is a cross-sectional view of a cuff cutter according to the present invention;

3 is a cross-sectional view of a cuff cutter provided with dust collectors separately; and

4 is a perspective view of a cuff cutter having two rows of end mills.

The present invention provides a motor having a front shaft extending toward the front end, a transmission connected to the front shaft to shift the first output shaft at a predetermined rotation speed, a through hole formed under the front end, in order to achieve the first object. A second output shaft perpendicular to the first output shaft and penetrating the through hole, the rotation about the first output shaft of the transmission parallel to the front axis is converted into a rotation about the second output shaft, and the cylindrical portion is integrated on the output side. A first housing having a set of bevel gears, and a third output shaft connected to the cylindrical portion in a keyed manner; An end mill comprising a first shank portion, a cutting portion, and a second shank portion, which is connected to the third axial force shaft in a key manner, is embedded in each of the first and second shanks through a bearing and extends in parallel with the end mill. A second housing integrally formed with the first portion and the tip portion of the first portion, the second housing including a protrusion made up of the first portion extending from the tip portion of the first portion in a direction perpendicular to the end mill and having a second through hole formed therein; And first and second fasteners for attaching the second housing to the first housing.

In addition, the present invention, in addition to the configuration for achieving the first object, in order to achieve the second object, the first housing partitions the duct channel communicating with the collection chamber in which the first housing is separately installed, the motor is rearward A shaft is further included, and a fan is attached to the rear shaft.

In addition, the present invention, in addition to the configuration for achieving the first and second purposes, in order to achieve the third object, the motor, the front shaft and the of the components built in the first housing Each of the components other than the transmission is arranged in parallel in the first housing and has one more, and each of the components embedded in or included in the second housing is arranged in parallel to the second housing. And another one in the second housing, and the other first and second fasteners for attaching the other second housing to the first housing.

Hereinafter, a first embodiment of the present invention will be described. A cuff cutter with a first housing 1 is shown in FIGS. 1 and 2. The bearing part 1a of the 1st housing 1 accommodates the end mill 2 mounted for rotation. This end mill 2 is driven by the motor 3. The front shaft 4 of the motor extends toward the front of the housing 1 and the transmission 5 for transmitting the power of the motor from the front shaft 4 to the set of bevel gears 10 at a predetermined speed. Is operably attached to the And the transmission 5 centers the rotation about the 1st output shaft 5a parallel to the front axis 4 about the output shaft 11 perpendicular to the 1st output shaft 5a parallel to the front axis 4. The set of bevel gears 10 is rotatably mounted in order to convert them into rotation.

In the bevel gear 10 having the cylindrical portion 20 having an H-shaped cross section, a second output shaft 11 extends through the first through hole 12 of the first housing 1. And, the second output shaft 11 is inserted into the cylindrical portion 20 by the key connection method, the cylindrical portion 20 is interposed between the first bearing 21 and the first through hole ( 12) is rotatably mounted. In addition, the cylindrical portion 20 is equipped with a third output shaft 13 having a U-shaped cross section by a key connection method.

In addition, the third output shaft 13 is the first shank portion 2a of the end mill 2, which is composed of a first shank portion 2a, a cutting portion 2b, and a second shank portion 2c. The proximal end is inserted and mounted in a key connection manner, and the distal end of the first shank portion 2a of the edmill 2 is rotatable in the second housing 15 via a second bearing group (not shown). It is inserted and mounted.

The front end side of the second housing 15 is formed with a horseshoe-shaped protrusion 16, the horseshoe-shaped protrusion 16 is the first portion 16a and the first portion extending in parallel with the end mill (2) It consists of a second part 16b which is integrally connected with the tip of the part 16a and extends from the tip of the first part in a direction perpendicular to the end mill 2. A second through hole 17 is formed in the second portion 16b, and the second shank portion 2c of the end mill 2 is provided with a third bearing (not shown). Not inserted).

The second housing 15 is attached to the bearing portion 1a of the first housing 1 by a first fastener 19 and a second fastener 20.

Hereinafter, a second embodiment of the present invention will be described with reference to FIG. The cuff cutter can be provided with a device capable of collecting dust when removing the cuff from the affected part in addition to the configuration of the first embodiment. Here, the housing 1 defines a duct channel 6 for guiding the air flow for floating conveyance of the cuff debris. The rear shaft 7 extends rearward from the motor 3 to mount the infeller or fan 8 on the shaft. The infeller or fan 8 exerts a force on the conveying air during device operation. When the motor 3 rotates the front shaft 4 and the rear shaft 7, this rotation rotates the end mill 2 and also rotates the infeller or fan 8. As a result, an air flow through the duct channel 6 is generated in the direction of the infeller in the end mill 2. The duct channel 6 communicates with the collection chamber 9 which is installed separately from the cuff cutter.

In addition, as a modified embodiment of the configuration of the second embodiment for floating conveying the crumbs of the cuffs, as shown in Fig. 3, the cuffs cutter includes a motor (3) equipped with the cuffs to the cuffs cutter. The duct channel 6 for guiding the air flow suspended and conveyed by the rotation of the infeller mounted on a separate motor other than) may be attached to the outside of the second housing 15. At this time, the duct channel 6 is in communication with the collection chamber 9 provided separately from the gift cutter.

Hereinafter, a third embodiment of the present invention will be described. The cuffs cutter has to cut the cuffs one or more times in the longitudinal direction to remove the cuffs from the affected part without the need for a separate device to open the cut cuffs. In order to solve this inconvenience, the cuff cutters are fixed in parallel with each other, as shown in FIG. 4, in addition to the configuration of the first embodiment, the configuration of the second embodiment, or the configuration of a separate embodiment of the second embodiment. It may be provided with two end mills 2 mounted to the first housing 1 at intervals.

For example, in order to mount two end mills in parallel to the housing 1, the first housing 1 is formed with two first through holes 12 and 12. The transmission 5 transmits the power of the front shaft 4 of the motor 3 about the two first output shafts 5a and 5a parallel to the front shaft 4 to the front shaft 4. Two sets of bevel gears (10, 10) are rotatably mounted to convert them into rotation about two output shafts (11, 11) perpendicular to the two parallel first output shafts (5a, 5a). . The configuration from each of the two sets of bevel gears 10, 10 to each end mill 2 is the same as in the first embodiment. Also. A configuration for floating conveying the crumbs of the cuffs may also be applied to each end mill as in the second embodiment or a separate embodiment of the second embodiment.

The operation of the GIFS cutter will be described below.

The motor 3 connected to the power source drives the front shaft 4, and the front shaft 4 drives the first output shaft 5a at a predetermined rotation speed through the transmission 5. One bevel gear of the pair of bevel gears 10 mounted on the first output shaft 5a by the key connection method rotates at the rotational speed of the first output shaft 5a, and is at an angle of 90 degrees with the one bevel gear. And the other bevel gear meshed with the one bevel gear to rotate with the output shaft 11 about an output shaft 11 disposed at an angle of 90 degrees with respect to the first output shaft 5a. do. When the output shaft 11 is rotated, the cylindrical portion 20 is mounted on the output shaft 11 in a key manner from one side rotates, and accordingly, a third output shaft connected to the cylindrical portion 20 in a key manner. 13 rotates. Then, the end mill 2 mounted in the key manner on the third output shaft 13 is rotated. At this time, the second portion 16b of the second housing 15 is sandwiched between the general elastic bandage wound on the affected part and the plaster bandage surrounding the general elastic bandage to advance the gift cutting device. The gypsum bandage is cut by the end mill 2 as the gips cutting device is advanced.

When the gypsum bandage is cut by the end mill 2, the gypsum bandage debris from the gypsum bandage is collected in the collection chamber 9 through the duct channel 6.

In addition, if the gift cutter is a gift cutter having two end mills as in the third embodiment, if the gift cutter is advanced only once for cutting the gift, a separate device for opening the cut gift is needed. Gifs can be removed from the affected area without

The GIFS cutter configured as in the first embodiment does not cause a shock or injury to the patient when removing the GIFS from the affected part, so that an operator who cuts the GIFs when cutting the GIFs needs to perform cutting work slowly and deeply. It can be quickly removed from the affected area.

In addition, the GIFS cutter configured as the second embodiment or the modified embodiment to the second embodiment can collect dust generated when removing the GIFS from the affected part, thereby not causing discomfort to the patient.

In addition, the GIFS cutter configured as in the third embodiment eliminates the need for a separate device for opening the cut GIFS when removing the GIFS from the affected part, thereby reducing the time of the GIFS removal operation.

Claims (4)

A motor (3) having a front shaft (4) extending toward the tip, a transmission (5) connected to the front shaft (4) to shift the first output shaft (5a) at a predetermined number of revolutions, and formed at the bottom of the tip A first through hole 12, a second output shaft 11 perpendicular to the first output shaft 5a and penetrating through the through hole 12, and a third of the transmission 5 parallel to the front shaft 4; A set of bevel gears 10 that converts rotation about the first output shaft 5a into rotation about the second output shaft 11 and is provided with the cylindrical portion 20 integrally on the output side, and the cylindrical A first housing 1 having a third output shaft 13 connected to the unit 20 in a keyed manner; The first and second shanks are provided with an end mill 2 composed of a first shank portion 2a, a cutting portion 2b, and a second shank portion 2c and connected to the third axial force shaft 13 in a key manner. Built-in bearings in each of the parts, the first part 16a extending in parallel with the end mill 2 and the tip of the first part 16a integrally with the end mill 2 in a direction perpendicular to the end mill 2. A second housing 15 extending from the leading end of the first portion and including a projection 16 formed of a first portion 16b having a second through hole 17 therein; And And a first and second fastener (19, 20) for attaching the second housing (15) to the first housing (1). 2. The first housing (1) according to claim 1, wherein the first housing (1) defines a duct channel (6) in communication with a separately installed collection chamber (9), and the motor (3) further comprises a rear shaft (7). And a fan (8) is attached to the rear shaft (7). The duct channel (6) according to claim 1, wherein the second housing (15) guides the air flow carrying the cuffs suspended by a fan driven by a separate motor and communicates with a separately installed collection chamber (9). Surgical gift bandage cutter, characterized in that attached to the outside). 4. A component according to any one of claims 1 to 3, except for the motor (3), the front axle (4) and the transmission (5), among the components built in the first housing (1). Each of the components disposed in parallel in the first housing and having one more, and each of the components embedded in or included in the second housing 15 and the other second arranged in parallel to the second housing And another one of the first and second fasteners for attaching the other second housing to the first housing.