CN217793277U - Orthopedic power tool using super capacitor - Google Patents

Abstract

The utility model provides an orthopedic power tool using a super capacitor, including an orthopedic power tool and a super capacitor. The orthopedic power tool includes a gun-type electric drill, a gun-type pendulum saw and a pen-type electric drill. The super capacitor is an integrated super capacitor unit array. The integrated supercapacitor unit array is a sheet structure, and each unit is connected in parallel and placed in the battery compartment or an external battery box. Both the gun-type electric drill and the gun-type pendulum saw are equipped with handles, and the inside of the handle is equipped with a circuit board. It is detachably connected to the external battery box, and the supercapacitor is connected to the circuit board through a circuit; the pen-type electric drill includes a circuit board compartment, and a main control circuit board is arranged inside the circuit board compartment, and the circuit board compartment and the battery compartment are integrated, and the main control circuit board Connected with the supercapacitor through wires, the utility model supercapacitor as a battery has a longer cycle life, is safer, is more green and pollution-free, and its second-level charging time helps to greatly reduce the operation preparation time.

Description

An orthopedic power tool using a supercapacitor

technical field

The utility model belongs to the technical field of medical devices, in particular to an orthopedic power tool using a supercapacitor.

Background technique

In modern orthopedic surgery, the power system of orthopedic surgery plays a vital role. The system includes power supply and orthopedic power tools. The latter is an electric device that can provide the power, control and operation functions required for surgery. The doctor's work intensity can realize the drilling, milling, grinding, sawing and other functions required by the operation. The power supply of orthopedic power tools provides power for the operation of the tools, and puts forward strict requirements on its electric energy capacity and dead weight, as well as high charging speed, large discharge current, high temperature disinfection, sealing and aging resistance.

This patent introduces the new supercapacitor technology to improve the existing tools. While realizing the assemblability between the power supply and the tool body, it solves the technical problems of the existing battery energy density and charge and discharge performance, prolongs the life of the power supply, and further solves the problem of the tool power supply. Important issues such as volume and weight restrictions.

At present, the power sources of orthopedic power tools are basically divided into two types: power boxes and built-in batteries.

Among them, the power in the form of a power box has multiple output interfaces, which convert 220V alternating current into a current form suitable for power tools, and are connected to the tools by wires. The power box itself can also be used as a console, usually with functions such as setting the speed and self-testing of the equipment. The advantage of this design is that it can provide continuous and stable power supply for a long time, can power a group of different types of tools, and has more comprehensive identification and diagnosis functions. However, the power box is huge and heavy, and the power supply method connected with the tool will bring considerable inconvenience to the surgical operation process.

Self-contained battery type, that is, the battery compartment is integrated with the tool itself, and the battery can be replaced by disassembly, and the battery itself is rechargeable. The design is easy to use, compact and has no external wires. Currently, nickel metal hydride batteries and lithium batteries are commonly used for this type of tool.

Ni-MH batteries are low in price, strong in versatility, relatively good in fast charging and discharging performance, and stable in operation. Their disadvantages are low energy density, large weight and large volume, low discharge voltage, high internal resistance, and high self-discharge rate when fully charged. . Lithium batteries have high energy density, high discharge voltage, and light weight. Their disadvantages are poor safety, unstable operation, limited instantaneous maximum discharge current, and inability to withstand overcharging. The battery needs its own IC module to ensure safety, which greatly increases the cost. At the same time, the common defect of both is that the charging time is long, which is especially obvious during the operation process where every second counts.

For the main pursuit of fast charging in terms of energy storage. For energy storage capacitors/batteries, the time required to reach the maximum energy storage value through charging is the maximum energy storage time. There are also fewer side effects. There are two factors that determine the charging time, one is the output power of the charger, and the other is the capacity of the energy storage capacitor. The larger the former, the shorter the charging time, and the larger the latter, the longer the charging time. Whether it is a Ni-MH battery or a lithium battery, it is charged through a low-voltage DC power supply (converter), and its output power limits the overall power of the charger.

For orthopedic surgery, long-term relatively high-power discharge is required, and the energy release efficiency and life of the battery should be improved as much as possible. When working, the internal resistance of the motor, the internal resistance of the circuit and the battery itself will consume power, and at the same time generate heat, which will affect the work of the mechanical system. For chemical batteries, due to the internal chemical reactions, it is difficult to expand the operating temperature range while ensuring safety, and the service life is relatively limited. Some chemical batteries also have a memory effect, which temporarily reduces the capacity of the battery and shortens the use time. The charging of the traditional battery after self-discharge causes preoperative preparation, insufficient battery capacity, and replacement of the battery during the operation, which all lead to cumbersome preparations and long time.

Utility model content

The purpose of this utility model is to solve the above problems, to provide an orthopedic power tool using supercapacitors, including gun-type electric drills, gun-type pendulum saws and small pen-type electric drills, with integrated supercapacitor cell arrays as batteries, used for Clinical use in orthopedic procedures of various durations.

Further, the mechanical structure of the gun-type electric drill is based on the existing DC motor combined with a small reducer power integration tool, and uses a medium-sized super capacitor cell array to replace the rectangular nickel-metal hydride battery originally used by this type of gun-type electric drill. In addition, it also includes a gun-type quick-release chuck, electric drill high and low speed and lock switch, electric drill trigger button, gun-type electric drill body, and a handle containing a control circuit board. Among them, the gun-type quick-release chuck is installed on the main body of the gun-type electric drill, and the high and low speed and locking switches of the electric drill are located on the main body of the gun-type electric drill. The lower part of the main body is provided with a handle, the inside of the handle is provided with a circuit board, and an external independent battery box with a supercapacitor array installed inside is connected under the handle.

Furthermore, the mechanical structure of the gun-type pendulum saw is based on the existing DC motor combined with a small reducer power integration tool, and uses a medium-sized super capacitor unit array to replace the rectangular nickel-metal hydride battery originally used in this type of gun-type electric drill. In addition, it also includes the oscillating saw head, oscillating saw locking switch, oscillating saw high and low speed and locking switch, oscillating saw trigger button, gun-type oscillating saw body, and the handle containing the control circuit board. Among them, the quick-release chuck of the oscillating saw is installed on the main body of the gun-type oscillating saw, and the high and low speed and locking switches of the oscillating saw are located on the main body of the gun-type oscillating saw. Switching, the lower part of the main body of the gun-type pendulum saw is provided with a handle, the inside of the handle is provided with a circuit board, and the external independent battery box with the supercapacitor array installed inside is connected under the handle.

Further, the external independent battery boxes of the above two tools are all provided with copper female terminals. The female terminal has no exposed part outside the housing, and is pluggably connected to the copper male terminal exposed under the handle, and the box body can be quickly removed and replaced. The male terminal is connected to the circuit board through wires, further realizes power integration and controls the DC input of the circuit board, and realizes the function of supplying power to the gun drill; and the removed battery box can be connected with the same type of male terminal on the charger. Plug-in connection for fast charging.

Furthermore, the mechanical structure of the pen-type electric drill is based on the existing DC motor combined with a small reducer power integration tool, and uses a supercapacitor cell array to replace the original 18650 cylindrical lithium battery used in the pen-type electric drill. In addition, it also includes a pen-type quick-release chuck, a forward and reverse switch button, a circuit board compartment for installing a circuit board inside, a pen-type electric drill body, and a battery compartment for installing a small supercapacitor array. Among them, the pen-type quick-release chuck is installed on the main body of the pen-type electric drill, and the two forward and reverse switches are button-type, located on the main body of the pen-type electric drill, and the main control circuit board is below it, and the forward and reverse of the electric drill is controlled by adjusting the switch , the tail of the main body of the pen type electric drill is the battery compartment.

Furthermore, the battery compartment and the internal supercapacitor array of the above-mentioned pen-type electric drill are not detachable, and are closed structures, and the capacitor array is connected to the control circuit board through internal wires, and further supplies power to the power integration; when charging is required, open the battery compartment The dust cover at the rear is pluggably connected to the male terminal on the charger by the female terminal set at the rear, so that the supercapacitor can be charged in DC without taking out the capacitor.

Further, the unit capacitors of the above-mentioned supercapacitor array have a sheet structure, each unit is connected in parallel to a DC circuit, and its capacity is the superposition of each capacitor, and can be arranged in accordance with the design reserved size of the internal structure.

Further, in the exhausted state, there is no energy and no voltage in the supercapacitor unit array built in the body, which is consistent with the exhausted state of a general battery. At this point, the supercapacitor is connected in parallel with the low-voltage DC power supply of the high-power charger, which further transfers the energy to the supercapacitor very quickly.

Furthermore, during use, the supercapacitor functions as a normal battery, which can continuously discharge a working current of more than 10 to 20A, and can discharge a high current of up to 40A under extreme conditions such as stalling.

Further, the two kinds of gun tools involved in the lock of the utility model have relatively large battery capacity due to the high power of the motor, so the external battery is designed to be detachable, and the spare supercapacitor battery box can be quickly replaced. As for the pen tool involved, due to the small power of the motor, it is designed as an integration of the supercapacitor battery and the tool, and the charging can realize plug-and-play.

Compared with the prior art, the beneficial effects of the utility model are mainly reflected in:

1. Compared with the battery, the supercapacitor used in the orthopedic power tool of the present invention is more compact and lightweight, and can be integrated with tools of various sizes and shapes, reducing space and reducing disassembly and assembly Various problems such as sealing and disinfection are brought about.

2. The charging time of the utility model is greatly shortened. Compared with the tens of minutes or even hours of chemical batteries, the second-level charging time helps to greatly reduce the operation preparation time.

3. The energy density of the supercapacitor used in this utility model can be as high as 50Wh/kg, which is at the same level as the lead-acid battery, while the power density is much larger than that of common batteries, and the self-discharge efficiency is higher, and it can produce Considerable current (average 20A, peak 40A) to drive higher power motors in orthopedic power tools.

4. The supercapacitor used in the orthopedic power tool of the present utility model is safer than batteries, and will not cause fire and deflagration due to temperature and humidity, and because there is no chemical reaction of the contents in the charging and discharging process, it is more green and pollution-free .

5. The supercapacitor used in the utility model has a longer cycle life as a battery, has no memory effect, does not have chemical reactions, can be repeatedly charged and discharged more than 1 million times, has a longer shelf life, and does not decrease in storage capacity for a long time.

Description of drawings

Fig. 1 is the structural representation of gun type electric drill in the utility model embodiment;

Fig. 2 is a schematic structural view of the gun type pendulum saw in the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a pen-type electric drill in an embodiment of the present invention.

Detailed ways

A kind of orthopedic power tool using supercapacitor of the present invention will be described in more detail below in conjunction with schematic diagram, wherein represents the preferred embodiment of the present invention, it should be understood that those skilled in the art can modify the present invention described here, and The beneficial effect of the utility model is still achieved, therefore, the following description should be understood as the broad knowledge of those skilled in the art, and not as a limitation to the utility model.

A power tool for orthopedics, including a gun-type electric drill, a gun-type oscillating saw, and a small pen-type electric drill, uses an integrated supercapacitor cell array as a battery, and is used for clinical use in orthopedic operations of various durations.

As shown in Figure 1, the structure of the gun-type electric drill includes a grab-type quick-release chuck 1, an electric drill trigger button 2, an electric drill high and low speed and lock switch 3, an electric drill handle 4 containing a control circuit board, and a supercapacitor. An external battery box 5 for the electric drill, and a main body 6 for the gun type electric drill. Among them, the gun-type quick release chuck 1 is installed on the gun-type electric drill main body 6 for installing different types of drill bits; the gun-type electric drill main body 6 is equipped with a DC motor inside to cooperate with the power integration of the reducer as a working power source; the electric drill trigger type The button is arranged on the main body 6 of the gun-type electric drill to control the operation of the gun-type electric drill; the high and low speed and lock switch 3 of the electric drill are located on the main body 6 of the gun-type electric drill, and the high, low speed and low speed of the electric drill are controlled by adjusting the high and low speed of the electric drill and the lock switch 3 The switch of the locking insurance state; the lower part of the gun-type electric drill main body 6 is provided with an electric drill handle 4, and a control circuit board is installed inside the electric drill handle 4; the external battery box 5 of the electric drill is externally connected to the electric drill handle 4 through the shell structure and copper terminals, The supercapacitor unit array is used to replace the rectangular Ni-MH battery originally used in this type of gun drill, which can be quickly disassembled and charged with a matching high-power charger.

As shown in Figure 2, the structure of the gun-type oscillating saw includes an oscillating saw head 7, an oscillating saw locking switch 8, an oscillating saw trigger button 9, an oscillating saw high and low speed and locking switch 10, and a pendulum control circuit board included. Saw handle 11, an external battery box 12 for an oscillating saw with a supercapacitor installed, and a main body 13 for a gun-type oscillating saw. Among them, the oscillating saw head 7 is provided with an oscillating saw locking switch 8 for locking different types of saw blades; the oscillating saw head 7 is installed on the main body 13 of the gun-type oscillating saw; The power integration of the gun-type oscillating saw is used as a working power source; the gun-type trigger button 9 is arranged on the gun-type oscillating saw body 13 to control the operation of the gun-type oscillating saw; 13, through the high and low speed of the swing saw and the lock switch 10 to control the switching of the high and low speeds of the swing saw and the locking safety state; board; the external battery box 12 of the pendulum saw is externally connected to the handle 11 of the pendulum saw through the shell structure and copper terminals, and the supercapacitor cell array is used to replace the rectangular Ni-MH battery originally used by this type of pendulum saw, which can be quickly disassembled and used High power charger for charging.

As shown in FIG. 3 , the structure of the pen-type electric drill includes a pen-type quick release chuck 14 , two waterproof switch buttons 15 , a circuit board compartment 16 , a battery compartment 17 for fixedly installing a supercapacitor, and a pen-type electric drill main body 18 . Among them, the pen-type quick release chuck 14 is installed on the pen-type electric drill main body 18 for installing different types of drill bits; the inside of the pen-type electric drill main body 18 is equipped with a DC motor to cooperate with the power integration of the reducer as a working power source; two waterproof The switch button 15 is a button type, located on the circuit board compartment 16, the main control circuit board below it, and controls the forward and reverse of the electric drill one after the other, and there will be no reaction when pressed at the same time; the tail of the pen type electric drill main body 18 It is a non-detachable battery compartment 17, and a small supercapacitor unit array is fixedly installed inside to replace the removable 18650 cylindrical lithium battery used in the small pen-type electric drill. The battery compartment 17 is a closed structure. When charging is required, the dust cover at the rear of the battery compartment 17 is opened to expose the charging terminal, so that the whole pen drill can be connected to the charger for charging operation without taking out the capacitor.

During the disinfection treatment, the gun-type electric drill and the gun-type pendulum saw can be disinfected with the whole machine and the battery compartment, and the pen-type electric drill should be disinfected with the whole machine.

The above are only preferred embodiments of the utility model, and do not limit the utility model in any way. Any person skilled in the technical field, without departing from the scope of the technical solution of the utility model, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the utility model, all of which are within the scope of the utility model. The content of the technical solution still belongs to the protection scope of the present utility model.

Claims (10)

1. An orthopedic power tool using a supercapacitor, characterized in that it comprises a power tool for orthopedics and a supercapacitor, the supercapacitor is an integrated supercapacitor cell array, and the supercapacitor and the power tool for orthopedics pass through circuit connection; The supercapacitor unit array is a sheet structure, and each unit of the supercapacitor unit array is connected in parallel and connected to a direct current circuit. 2. The orthopedic power tool using a supercapacitor according to claim 1, wherein the orthopedic power tool includes a gun drill, a gun pendulum saw and a pen drill, and the gun drill and gun pendulum The saws are all provided with a handle, and a circuit board is arranged inside the handle, and the supercapacitor unit array is arranged in an external battery box or a battery compartment, and the external battery box is detachably connected to the handle, and the supercapacitor unit an array is electrically connected to the circuit board; The pen-type electric drill includes a circuit board compartment, a main control circuit board is arranged inside the circuit board compartment, the head of the battery compartment is integrally fixed with the tail of the circuit board compartment, and the supercapacitor unit array is connected to the The main control circuit board is connected by wires. 3. The orthopedic power tool using a supercapacitor according to claim 2, wherein the upper surface of the external battery box is provided with a slot for inserting the bottom of the handle, and the bottom of the handle is provided with an exposed copper quality male terminal, the copper male terminal is connected to the circuit board through wires, the external battery box is provided with a copper female terminal, and the copper female terminal is connected to the supercapacitor cell array, when the handle is inserted When the slot is used, the copper female terminal and the copper male terminal are pluggably connected. 4. The orthopedic power tool using a supercapacitor according to claim 2, wherein the tail of the battery compartment is provided with a copper female terminal and an openable dustproof cover for covering the copper female terminal, When the battery compartment needs to be charged, the dust-proof cover is opened, and the copper female terminal is connected to the male terminal of the matching charger through a plug-in connection to realize DC charging. 5. The orthopedic power tool using a supercapacitor according to claim 2, wherein the gun-type electric drill also includes a gun-type electric drill main body, a gun-type quick-release chuck for installing different types of drill bits, and as a working power The power integration of the source, the electric drill trigger button used to control the operation of the gun-type electric drill, and the high-low speed and lock switch of the electric drill to control the high-speed, low-speed and lock-up insurance state switching of the gun-type electric drill; the quick-release chuck of the electric drill is set on the At the gun head of the main body of the gun-type electric drill, the trigger button of the electric drill and the high and low speed of the electric drill and the lock switch are arranged on the main body of the gun-type electric drill; the power integration is arranged inside the main body of the gun-type electric drill; The lower end surface of the main body of the gun-type electric drill is integrally fixed with the upper end surface of the handle; the power integration is connected with the circuit board through wires. 6. The orthopedic power tool using a supercapacitor according to claim 5, wherein the gun-type oscillating saw comprises a gun-type oscillating saw main body, an oscillating saw head installed on the head of the gun-type oscillating saw main body, Locking switches for locking different types of saw blades, power integration as a working power source, swing saw trigger buttons for controlling the operation of the gun-type swing saw, and high and low speeds for controlling the gun-type swing saw The high and low speed and lock switch of the oscillating saw switched between the locked and safe state; the locking switch is arranged on the lower end surface of the oscillating saw head; the power integration is arranged inside the main body of the gun-type oscillating saw; the oscillating saw The trigger button and the high and low speed and locking switch of the swing saw are arranged on the main body of the gun swing saw, and the lower end surface of the main body of the gun swing saw is integrally fixed with the upper end surface of the handle; the power integration and the circuit The boards are connected by wires. 7. The orthopedic power tool using a supercapacitor according to claim 6, wherein the pen-type electric drill includes a pen-type quick-release chuck, a pen-type electric drill main body, a power integration as a working power source, and a Two waterproof switch buttons that control the forward and reverse of the electric drill; the pen-type quick release chuck is set on the head of the pen-type electric drill body; the working power source is set inside the pen-type electric drill body; The circuit board compartment is arranged on the outer periphery of the main body of the pen type electric drill; the two waterproof switch buttons are arranged on the upper surface of the circuit board compartment, and the two waterproof switch buttons are connected to the main control circuit board Control connection; the battery compartment is integrally arranged at the tail of the main body of the pen-type electric drill; the power integration is connected with the main control circuit board through wires. 8. The orthopedic power tool using a supercapacitor according to claim 7, wherein the power integration is composed of a DC motor and a reducer. 9. The orthopedic power tool using a supercapacitor according to claim 2, characterized in that, when the gun-type electric drill, gun-type pendulum saw and pen-type electric drill are in normal use, the supercapacitor continuously emits 10-20A Working current: when the gun drill, gun swing saw and pen drill are locked, the supercapacitor will discharge a maximum working current of 40A. 10. The orthopedic power tool using a supercapacitor according to claim 2, characterized in that, when the electric power of the gun type electric drill, gun type pendulum saw and pen type electric drill is exhausted, there is no For energy and voltage, the supercapacitor and the low-voltage DC power supply of the high-power charger are connected in parallel to achieve the purpose of fast charging.

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