KR102722112B1 - A surgical drill - Google Patents

Abstract

The present invention provides a safety drill for surgical operations. The safety drill for surgical operations comprises: a drill body; a rotating portion provided on the drill body and generating a rotational force; a drill bit detachably connected to the rotating portion; a sensor portion measuring rotational resistance according to rotation generated by the rotating portion; and a sensor portion installed on the drill body and stopping the operation of the rotating portion when the measured rotational resistance is less than a preset reference rotational resistance.

Description

{A surgical drill}

The present invention relates to a safety drill for surgical operations, and more specifically, to a safety drill for surgical operations that can safely perforate a bone without damaging important structures such as blood vessels and nerves located inside the bone of a patient.

In general, when performing surgical operations, it often happens that a hole of a certain size is drilled into the patient's bone.

At this time, a surgical perforation drill is used for the perforation operation.

These conventional surgical drills are pistol-type drills that use a trigger to drive a motor to rotate a drill bit. These conventional drills have a motor that rotates the drill bit.

A surgical drill includes a drill body, a drill bit, a motor, and a controller for driving the motor. The drill body is provided with a trigger member for driving the motor. The trigger member has a structure that allows a user to press it with a finger.

The above motor has a rotational shaft. The rotational shaft is provided with a joint into which a drill bit is fitted and coupled.

A drill with this configuration could allow a user, such as a doctor, to make holes in a patient's bone.

Typically, the above conventional drill rotates the motor's rotation shaft based on an electrical signal generated when the user pulls the trigger member. As the drill bit connected to the rotation shaft rotates, the bone can be perforated.

Additionally, conventional drills rotate the drill bit while the trigger bit is pulled, and stop rotating the drill bit when the trigger bit is not pulled. In other words, the rotational motion of the drill bit is determined by the user's manual manipulation of the trigger bit.

The human body contains important tissues such as blood vessels and nerves, and when using a drill to drill through the diameter of a bone from the proximal to the distal part, the drill bit rotates at a constant speed while applying a pushing force to the drill to drill through the bone. When looking at the cross-section through the bone, the proximal cortical bone, cancellous bone, and distal cortical bone are encountered in that order. The cortical bone has a very hard hardness, and the cancellous bone has a slightly soft hardness. The hardness felt by the surgeon is when the very hard cortical bone is drilled, then the soft cancellous bone is drilled, and then the very hard distal cortical bone is drilled again. To drill a hard area, a pushing force is essential.

When the distal cortex is penetrated while applying a force, the rotation should be stopped immediately, but this is a matter of the surgeon's skill. If the drill bit continues to rotate while applying a force after penetrating the distal cortex, it can lead to damage to adjacent nerves and blood vessels, and fatal consequences.

In the past, when drilling bones, the skill level of the worker was relied on to safely drill without damaging the nerves.

Republic of Korea Patent No. 10-0549101 (Registration date: January 26, 2006)

The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a surgical safety drill capable of detecting in real time the rotational resistance applied to a drill bit when drilling a bone, and stopping the rotation when the rotational resistance is below a set reference value, thereby preventing damage to blood vessels and nerves located at the distal part of the bone.

The purpose of the present invention is not limited to the purpose mentioned above, and other purposes and advantages of the present invention which are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. In addition, it will be easily understood that the purposes and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

To achieve the above objects, the present invention provides a safety drill for surgical operations.

The above surgical safety drill comprises: a drill body; a rotating part provided on the drill body and generating a rotating force; a drill bit detachably connected to the rotating part; a sensor part measuring a rotational resistance according to the rotation generated by the rotating part; and, a sensor part installed on the drill body and stopping the operation of the rotating part when the measured rotational resistance is less than a preset reference rotational resistance.

Here, the above control unit,

Further provided is a rotation speed measuring sensor for measuring the rotation speed of the above rotating part,

If the measured rotational speed is greater than or equal to a preset reference rotational speed, it is preferable to stop the operation of the rotating part. If it is less than the reference rotational speed, the drill bit is rotated at a rotational speed during the process of drilling the bone, and if it completely penetrates from one side of the bone to the other side, the rotational speed increases to a certain degree to achieve a reference rotational speed or more.

And in the above drill body,

A trigger member is provided for transmitting a control signal to the control unit to drive the above rotating unit,

The control unit is,

If the measured rotational resistance is less than the preset reference rotational resistance or the measured rotational speed is greater than the preset reference rotational speed,

It is desirable to block the above control signal.

In addition, the above rotating part,

A rotary motor having a rotation axis,

It is connected to the above-mentioned rotating shaft and has a connecting member to which the end of the above-mentioned drill bit is connected.

The above-mentioned joining member is,

Connected so as to be movable along the above rotational axis,

In the above drill body,

It is preferable to have an actuator capable of moving the coupling member forward and backward under the control of the above control unit.

In addition, the above control unit,

When the measured rotational resistance is less than the preset reference rotational resistance or the measured rotational speed is greater than the preset reference rotational speed, the rotational shaft is rotated.

It is desirable to force the joining member back to a certain position using the above actuator.

In addition, the above rotating part,

It is arranged so as to be able to move forward and backward along the movement path set in the above drill body,

In the above drill body,

A moving device for moving the above rotating part is installed,

The above control unit,

When the measured rotational resistance is less than a preset reference rotational resistance or the measured rotational speed is greater than a preset reference rotational speed, it is preferable to stop the operation of the rotational speed while forcibly moving the rotational part back to a certain position using the moving device while the rotational shaft is rotated.

By the above task, the present invention has the effect of detecting in real time the rotational resistance applied to the drill bit when drilling a bone, and stopping the rotation when the rotational resistance is below a set reference value, thereby preventing damage to blood vessels and nerves located in the distal part of the bone.

In addition to the effects described above, specific effects of the present invention are described below together with specific matters for carrying out the invention.

Figure 1 is a conceptual diagram showing the configuration of a safety drill for surgical operation according to the present invention.
Figure 2 is a drawing showing the configuration of a rotating part according to the present invention.
Figure 3 is a flow chart showing a process of stopping rotation according to the driving state of a rotating part according to the present invention.
Figure 4 is a graph showing the rotation stop position of the rotating part according to the present invention.
FIG. 5 is a block diagram showing an example in which a control unit according to the present invention is provided with a rotation speed measuring sensor.
Figure 6 is a drawing showing an example in which a joining member according to the present invention can move forward and backward.
FIG. 7 is a drawing showing another example in which a drill bit according to the present invention can move forward and backward.

The above-mentioned objects, features and advantages will be described in detail below with reference to the attached drawings, so that those with ordinary skill in the art to which the present invention pertains can easily practice the technical idea of the present invention. In describing the present invention, if it is judged that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Hereinafter, the phrase “any configuration is disposed on (or below)” a component or “on (or below)” a component may mean not only that any configuration is disposed in contact with the upper surface (or lower surface) of said component, but also that another configuration may be interposed between said component and any configuration disposed on (or below) said component.

Additionally, when a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the components may be directly connected or connected to one another, but that other components may also be "interposed" between the components, or that each component may be "connected," "coupled," or "connected" through other components.

The surgical safety drill of the present invention will be described with reference to the attached drawings below.

Fig. 1 is a conceptual diagram showing the configuration of a safety drill for surgical operation according to the present invention. Fig. 2 is a drawing showing the configuration of a rotating part according to the present invention.

Referring to FIGS. 1 and 2, a safety drill for surgical operation according to the present invention has a drill body (100).

The above drill body (100) may be formed in a pistol shape with a handle formed therein, or may be formed in a straight-line shape.

The above drill body (100) has a rotating part (200).

The above-mentioned rotating part (200) has a rotating motor (210). The rotating motor (210) has a rotating shaft (220). The rotating motor (210) can rotate the rotating shaft (220) in a forward and reverse direction under the control of the control part (300).

The above control unit (300) is installed in the drill body (100).

The above rotation axis (220) can be placed toward one end of the drill body (100).

The end of the above rotation shaft (220) is connected to a connecting member (230). The connecting member (230) functions like a clamp.

The above-mentioned connecting member (230) can clamp and fix one end of a drill bit (10) having a certain length.

Accordingly, the drill bit (10) can be detached by the clamping action of the connecting member (230).

Additionally, a sensor unit (400) is installed in the drill body (100) according to the present invention.

The above sensor unit (400) may be a sensor that measures rotational resistance according to rotation generated in the rotating unit.

The above rotating part (200) measures the rotational resistance generated when the rotating shaft (220) rotates. The sensor part (400) transmits the measured rotational resistance to the control part.

And a reference rotation resistance is set in the control unit (300). The reference rotation resistance can be set variably.

The above control unit (300) stops the operation of the rotation unit (200) when the measured rotational resistance is less than a preset standard rotational resistance.

Figure 3 is a flow chart showing a process of stopping rotation according to the driving state of a rotating part according to the present invention.

Referring to FIGS. 2 and 3, a reference rotational resistance is set in the control unit (300). The reference rotational resistance may be a reference value for detecting when the drill bit (10) reaches a softer area when perforating a bone.

Workers, such as doctors, use drills to bore holes of a certain size into a patient's bone for surgical purposes.

The user operates the trigger element (not shown) to transmit a control signal to the control unit (300). Accordingly, the control unit (300) drives the rotating unit (200). As a result, the drill bit (10) coupled to the rotating shaft (220) of the rotating unit (200) through the coupling member (230) is rotated at a set rotational speed.

A rotating drill bit (10) can perforate the bone at a corresponding location by coming into contact with one side of the bone. The rotating drill bit can penetrate the bone.

At this time, the sensor unit (400) continuously measures the rotational resistance applied to the rotational axis while perforating the bone.

Here, when the rotational resistance for rotating the drill bit (10) is less than the preset standard rotational resistance, the control unit (300) forcibly stops the operation of the rotation unit (200).

For example, when the drill bit (10) rotates and perforates the bone, the rotational resistance is referred to as the first rotational resistance, and when the rotational resistance is referred to as the second rotational resistance when the bone is penetrated toward the rear, the second rotational resistance may be lower than the first rotational resistance. Accordingly, the reference rotational resistance may be set to at least the second rotational resistance.

Figure 4 is a graph showing the rotation stop position of the rotating part according to the present invention.

As shown in Fig. 4, when drilling a bone using a drill bit (10), the rotational resistance increases steadily according to the drilling depth, thereby achieving a uniform rotational resistance at a certain level, and the rotational resistance may rapidly decrease at the moment it passes the P position. This region may be classified as a region where the density rapidly decreases.

In this case, the rotational speed of the drill bit (10) can be increased to a certain number or more when penetrating the bone.

Accordingly, the control unit (300) can stop the rotation of the rotating drill bit (10) immediately after penetrating the bone, thereby minimizing the risk of damaging blood vessels and nerves located at the distal part of the bone.

FIG. 5 is a block diagram showing an example in which a control unit according to the present invention is provided with a rotation speed measuring sensor.

Referring to FIG. 5, the control unit (300) according to the present invention may further include a rotation speed measuring sensor (500) that measures the rotation speed of the rotating unit (200).

The above control unit (300) may stop the operation of the rotation unit (200) when the measured rotation speed is greater than or equal to a preset reference rotation speed.

And the drill body (100) is provided with a trigger member (110) that transmits a control signal to the control member (300) to drive the rotating member (200). Here, in addition to the trigger member (110), a component such as a switch that can drive the rotating member (200) may also be used.

Through this configuration, the control unit (300) according to the present invention can block the control signal when the measured rotational resistance is less than a preset reference rotational resistance or when the measured rotational speed is greater than a preset reference rotational speed.

Accordingly, in the present invention, if the measured rotational resistance is less than a preset reference rotational resistance or the measured rotational speed is greater than a preset reference rotational speed, the rotating unit (200) is stopped, so that if either the sensor unit (400) or the rotational speed measuring sensor (500) malfunctions, the rotating unit (200) is stopped normally, thereby preventing a safety accident due to the rotating unit (200) not being stopped.

Figure 6 is a drawing showing an example in which a joining member according to the present invention can move forward and backward.

Referring to FIG. 6, the rotating part (200) according to the present invention is composed of a rotating motor (210) having a rotating shaft (220) and a connecting member (230) connected to the rotating shaft (220) and to which an end of the drill bit (10) is connected.

Here, the above-mentioned connecting member (230) is connected so as to be movable along the rotation axis (220).

A joining hole (231) that is joined to an end of a rotation shaft (220) is formed in the above joining member (230). A sliding groove (232) is formed on the inner periphery of the joining hole (231).

A sliding projection (221) is formed on the outer periphery of the above-mentioned rotation shaft (220). The sliding projection (221) has a length, is formed on the outer periphery of the rotation shaft (220), and is arranged to be movable along the sliding groove (232).

The above drill body (100) may be equipped with an actuator (250) that can move the connecting member (230) forward and backward under the control of the control unit (300).

The above actuator (250) has a shaft (251) that expands under the control of the control unit (300). An end of the shaft (251) is connected to a connecting member (230).

Accordingly, the connecting member can move forward and backward depending on the elastic movement of the axis.

Through this, the control unit (300) can forcefully move the coupling member (230) backward to a certain position using the actuator (250) when the rotational shaft (220) rotates if the measured rotational resistance is less than a preset reference rotational resistance or the measured rotational speed is greater than a preset reference rotational speed.

FIG. 7 is a drawing showing another example in which a drill bit according to the present invention can move forward and backward.

Referring to FIG. 7, the rotating part (200) according to the present invention may be arranged to be able to move forward and backward along a movement path set in the drill body part (100).

A moving device (600) for moving the rotating part (200) is installed in the above drill body (100).

The above moving device (600) may have an axis (610) that expands under the control of the control unit (300).

The end of the above shaft (610) can be connected to a rotation motor (210). The rotation motor (210) can be positioned in a guide groove (121) of a guide member (120) provided in the drill body (100) and can move.

A moving groove (122) is formed in the above guide member (120) so that the end of the shaft (610) can move.

When the shaft (610) is extended, the rotation motor (210) connected to its end can move forward and backward.

Through this, the control unit (300) can forcefully move the rotating part (200) back to a certain position by using the moving unit when the rotating shaft (220) rotates if the measured rotating resistance is less than a preset reference rotating resistance or the measured rotating speed is greater than a preset reference rotating speed.

Here, if the rotation speed is less than the above-mentioned standard rotation speed, the rotation speed of the drill bit is the rotation speed at which it rotates in the process of perforating the bone, and if the bone is completely penetrated from one side to the other, the rotation speed may increase above a certain level to achieve a rotation speed greater than the standard rotation speed.

In addition, when the control unit (300) forces the rotating unit (200) to retreat to a certain position, it is preferable to simultaneously stop the operation of the rotating unit (200).

According to the above configuration and function, the present invention detects in real time the rotational resistance applied to the drill bit when drilling a bone, and when the rotational resistance is below a set reference value, the rotation is stopped so as to prevent damage to blood vessels and nerves located in the distal part of the bone.

The present invention described above is not limited to the above-described embodiments and the attached drawings, since various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention by a person having ordinary skill in the art to which the present invention pertains.

10 : Drill bit
100 : Drill body
200 : Rotating part
210 : Rotation motor
220 : Rotation axis
230 : Absence of joint
300 : Control Unit
400 : Sensor section
500 : RPM sensor
600 : Mobile

Claims (6)

In surgical safety drills,
The above surgical safety drill is,
Drill body;
A rotating part provided in the above drill body and generating rotational force;
A drill bit detachably connected to the above rotating member;
A sensor unit for measuring rotational resistance according to rotation generated in the above rotating unit; and,
It is installed in the above drill body, and when the measured rotational resistance is less than the preset standard rotational resistance, the operation of the rotational part is stopped.
The control unit is,
Further provided is a rotation speed measuring sensor for measuring the rotation speed of the above rotating part,
When the measured rotational speed is greater than the preset reference rotational speed, the operation of the rotating part is stopped,
The above rotating part comprises a rotating motor having a rotating shaft, and a connecting member connected to the rotating shaft and to which the end of the drill bit is connected.
The above-mentioned connecting member is connected so as to be movable along the rotation axis,
The above drill body is provided with an actuator that can move the coupling member forward and backward according to the control of the control unit.
The above control unit,
When the measured rotational resistance is less than the preset reference rotational resistance or the measured rotational speed is greater than the preset reference rotational speed, the rotational shaft is rotated.
A surgical safety drill characterized in that the above-mentioned actuator is used to forcibly move the above-mentioned joining member backward to a certain position.
delete In paragraph 1,
In the above drill body,
A trigger member is provided for transmitting a control signal to the control unit to drive the above rotating unit,
The above control unit,
If the measured rotational resistance is less than the preset reference rotational resistance or the measured rotational speed is greater than the preset reference rotational speed,
A surgical safety drill characterized by blocking the above control signal.
delete delete In paragraph 1,
The above rotating part,
It is arranged so as to be able to move forward and backward along the movement path set in the above drill body,
In the above drill body,
A moving device for moving the above rotating part is installed,
The above control unit,
A surgical safety drill characterized in that when the measured rotational resistance is less than a preset reference rotational resistance or the measured rotational speed is greater than a preset reference rotational speed, the rotational shaft is rotated, and the rotational part is forcibly moved back to a predetermined position using the moving device.