KR20020023088A - Surgical cast cutter - Google Patents

Abstract

PURPOSE: A surgical cast cutter is provided to safely get off patient's cast without applying any shock to a patient, to collect dust generated during the cut work of the cast, and to eliminate the use of a separate cast widening device. CONSTITUTION: The surgical case cutter consists of a first housing, a second housing(15), and a first fastener and a second fastener for attaching the second housing to the first housing. The first housing comprises a motor having a front shaft, a transmission(5) connected to the front shaft so as to change the speed of a first output shaft(5a), a second output shaft(11) penetrating a first penetrating hole in perpendicular to the first output shaft, a set of bevel gears(10) for converting the rotation about the first output shaft into the rotation about the second output shaft and having a cylindrical portion, and a third output shaft connected to the cylindrical portion. The second housing comprises a cutting tool(2) composed of a first shank part(2), a cutting part(2b), and a second shank part(2c), the cutting tool is connected to the third output shaft of the first housing; and a projection(16) composed of a first part(16a) extending in parallel to the cutting tool, and a second part(16b) in perpendicular to the first part.

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 vibrating 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, the 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 gif 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 works slowly and deeply to avoid shock or injury to 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.

In addition, when removing the GIFS from the affected part, when not using a separate device for opening the cut GIFS again, be careful with the chainsaw at the GIFS site a certain distance away from the cut GIFS site Since the cutting operation has to be performed once again, the cutting operation takes a lot of time, and thus the conventional GIFS cutting device is 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.

In addition, the present invention is to provide a gypsum cutter having a hood that can be dusted when removing the cuffs in the affected area and at the same time the hood part can be moved up and down in accordance with the curvature due to the difference in thickness of the cuffs. Purpose.

In addition, it is a third object of the present invention to provide a GIFS cutter capable of shortening the time for removing the 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 cutting tools;

The present invention provides a motor having a front shaft extending toward the front end to achieve the first object, a transmission connected to the front shaft to shift the first output shaft at a predetermined rotation speed, a through hole formed at the bottom of the front end, 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; A cutting tool comprising a first shank portion, a cutting portion, and a second shank portion, which is connected to the third output shaft by a key method, is embedded in each of the first and second shank portions through a bearing and extends in parallel with the cutting tool. A second housing integrally formed with the first portion and the tip portion of the first portion, the second housing including a protrusion formed at the tip portion of the first portion in a direction perpendicular to the cutting tool 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 is partitioned duct channel in communication with the collection chamber is installed separately, the motor is a rear shaft It is further included, and the rear shaft is to be equipped with a fan.

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 another one of the 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 with reference to the accompanying drawings.

A cuff cutter with a first housing 1 is shown in FIGS. 1 and 2. The bearing part 1a fixed to the 1st housing 1 accommodates the cutting tool 2 mounted for rotation. This cutting tool 2 is driven by a 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. And the transmission 5 converts the rotation about the first output shaft 5a parallel to the front axis 4 to the rotation about the second output shaft 11 perpendicular to the first output shaft 5a. The set of bevel gears 10 is rotatably mounted in order to make them work.

As shown in FIG. 2, the bevel gear 10 having the H-shaped cylindrical portion 20 integrally has a second output shaft 11 having a first through hole 12 of the first housing 1. Stretched through). The second output shaft 11 is inserted into the cylindrical portion 20 by a key connection method, and the cylindrical portion 20 is provided on the bearing portion 1a covering the first through hole 12. The first bearing 21 is rotatably mounted through the circumference. In addition, the cylindrical portion 20 is mounted to the third output shaft 13 by the key connection method.

As shown in FIG. 1, the cutting tool 2 is composed of a first shank portion 2a, a cutting portion 2b and a second shank portion 2c, and the first shank portion 2a. The proximal end portion of is coupled to the third output shaft 13 in a key connection manner. Thus, the cutting tool 2 rotates at the same rotational speed as the third output shaft 13.

As shown in FIG. 1, the first shank portion 2a of the cutting tool 2 has a stepped portion 2a 'formed at the center thereof, and the cutting portion 2b of the cutting tool 2 is Cutting edges (for example, two cutting edges or three cutting edges) for cutting the spring are formed in a spiral shape, and the second shank portion 2c of the cutting tool 2 is formed by the cutting. It has a diameter smaller than the diameter of the part 2b.

The first shank portion 2a except for the proximal end portion of the cutting tool 2 has a second housing (22, 22) around the upper and lower portions in contact with the stepped portion (2a '), respectively. 15) is rotatably inserted.

The front end side of the second housing 15 is formed with a horseshoe-shaped protrusion 16 which guides the cutting of the cutting tool 2, and the horseshoe-shaped protrusion 16 is formed with the cutting tool 2 and the like. A second portion 16b which is integrally connected to the first portion 16a extending in parallel and the tip portion of the first portion 16a and extending from the tip portion of the first portion in a direction perpendicular to the cutting tool 2. )

A second opening 17 is formed in the second portion 16b, and the second shank 2c of the cutting tool 2 is interposed between the third bearing 23 in the second opening 17. Is inserted.

As shown in FIGS. 1 to 3, the second housing 15 is coupled to the stepped first fastener 19, and the first fastener 19 is at the top of the bearing part 1a. It is combined in a male and female manner. In addition, the first fastener 19 is inserted into the second fastener 30 having a shape corresponding to the step shape of the first fastener 19 on the inner circumferential surface, the second fastener 30 Is coupled to the bearing portion 1a of the first housing 1 as shown in FIGS. 1 and 2.

Hereinafter, a second embodiment of the present invention will be described with reference to FIG. 2.

The cuff cutter may 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 cutting tool 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 inpeller in the cutting tool 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. Key portion 50 outside the second housing 15 is attached to the hood unit 50 is attached to the duct channel (6) for guiding the air flow suspended by the rotation of the injector mounted on a separate motor other than Can be attached. At this time, the duct channel 6 is in communication with the collection chamber 9 provided separately from the gift cutter.

Here, a spring 51 is interposed between the hood part 50 and the second housing 15, and a part of the outer circumferential surface of the second housing 15 in the longitudinal direction of the second housing 15. An elongated slot-shaped groove 52 is formed, a threaded through hole is formed in the position of the hood portion 50 corresponding to the slot-shaped groove 52, and a bolt 54 is formed in the through hole ( 53 is inserted into the slot-shaped groove 52 to fasten the hood part 50 and the second housing 15.

Therefore, the hood portion 50 can be elastically moved up and down along the slot-shaped groove 52 by the configuration as described above, so that when the cuffs cutter advances for cutting the cuffs, Unobstructed by the bends of the gifs due to the different thicknesses.

The hood part 50 may be formed of a lightweight transparent body to show a state where the dust of the cuff is sucked into the collection chamber 9, and the cuff cutting direction to be connected to the duct channel 6. The n-shaped nipple connector 50a is formed on the proximal end surface of the cross section, and a display portion 50b is formed on the proximal end surface to indicate the direction of the cuff cutting.

In addition, the hood part 50 has a smooth outer surface to facilitate the cutting of the cuffs, and the corner portion of the hood 50 is rounded.

Hereinafter, a third embodiment of the present invention will be described. The cuffs cutter must 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. Two cutting tools 2 mounted to the first housing 1 at intervals may be provided.

For example, in order to mount two cutting tools in parallel to the housing 1, the first housing 1 is formed with two first through holes 12 and two bearing portions 1a. . The transmission 5 rotates the power of the front shaft 4 of the motor 3 about two first output shafts 5a and 5a parallel to the front shaft 4. Two sets of bevel gears 10 and 10 are rotatably mounted so as to be converted to rotation about two output shafts 11 and 11 perpendicular to 5a and 5a. The configuration from each of the two sets of bevel gears 10, 10 to each cutting tool 2 is the same as in the first embodiment. In addition, the configuration for floating conveyance of the cuffs can also be applied to each cutting tool as in the second embodiment or a separate embodiment of the second embodiment.

The operation of the GIFS cutter will be described below.

A motor 3 connected to a power source (not shown) 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 rotated 90 degrees with the one bevel gear. The other bevel gear meshed with the one bevel gear at an angle with the output shaft 11 about an output shaft 11 arranged at an angle of 90 degrees with respect to the first output shaft 5a. Rotate When the output shaft 11 is rotated, the cylindrical portion 20 which is mounted in the key method in one side of the output shaft 11 is rotated, and accordingly, a third output shaft connected to the cylindrical portion 20 by the key method 13 rotates. Then, the cutting tool 2 attached to the third output shaft 13 in a keyed manner is rotated. At this time, the second portion 16b of the second housing 15 is sandwiched between the general cast padding wound on the affected part and the rigid shell surrounding the general cast padding to advance the gift cutting device. As the cuff cutting device is advanced, the rigid shell is cut by the cutting tool 2.

When the rigid shell is cut by the cutting tool 2, the rigid shell debris from the rigid shell is collected in the collection chamber 9 through the duct channel 6.

In addition, if the GIFS cutter is a GIFS cutter having two cutting tools as in the third embodiment, if the GIFS cutter advances only once to cut the GIFS, a separate device for opening the cut GIFs is required. 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 cutting the GIFs when cutting the GIFs needs to perform the cutting operation 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 (6)

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 rotational speed, 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 shank parts include a cutting tool 2 comprising a first shank part 2a, a cutting part 2b and a second shank part 2c and connected to the third output shaft 13 in a key manner. It is embedded in each of the bearings, and is integrated with the first portion 16a extending in parallel with the cutting tool 2 and the tip portion of the first portion 16a in a direction perpendicular to the cutting tool 2. A second housing (15) comprising a projection (16) formed from a second portion (16b) extending from the tip of said first portion and having a second through hole (17) formed thereon; And And a first and second fastener (19, 30) 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 the rear shaft (7) has a fan (8) mounted thereon. 2. The duct channel (6) according to claim 1, wherein the second housing (15) guides the air flow floating and conveying the cuff debris by a fan driven by a separate motor and communicates with a separately collected collection chamber (9). Surgical gift cutters, characterized in that attached to the hood portion 50 is attached to the outside. 4. A configuration according to any one of claims 1 to 3, excluding the motor (3), the front shaft (4) and the transmission (5) of the components embedded in the first housing (1). Each of the elements disposed in parallel in the first housing and having another one, and each of the components embedded in or included in the second housing 15 arranged in parallel to the second housing And another one in the two housings, and another one of the first and second fasteners for attaching the other second housing to the first housing. The method of claim 3, wherein a spring 51 is interposed between the hood part 50 and the second housing 15, and a portion of the outer circumferential surface of the second housing 15 of the second housing 15 A slot-shaped groove 52 which is elongated in the longitudinal direction is formed, and a threaded through hole is formed in the position of the hood portion 50 corresponding to the slot-shaped groove 52, and the bolt 54 is Surgical gypsum cutting machine, characterized in that through the through hole is inserted into the slot-shaped groove (52) to fasten the hood portion (50) and the second housing (15). 6. The hood part (50) according to claim 5, wherein the hood part (50) may be formed of a lightweight transparent body to show a state where the dust of the cuff is sucked into the collection chamber (9), and connected to the duct channel (6). For this purpose, an n-shaped nipple connector 50a is formed on the proximal end surface of the cuff cutting direction, and a display portion 50b is formed on the distal end side to indicate the cuff cutting direction; In addition, the hood portion 50 is a surgical gypsum cutter, characterized in that the outer surface is a smooth surface in order to facilitate the cutting of the cuff, and all corners are rounded.