CN112315542B

CN112315542B - Handheld surgical equipment

Info

Publication number: CN112315542B
Application number: CN201910718819.4A
Authority: CN
Inventors: 于春江
Original assignee: Beijing Daoshengji Hospital Management Co ltd
Current assignee: Beijing Daoshengji Medical Equipment Co.,Ltd.
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2025-01-03
Anticipated expiration: 2039-08-05
Also published as: CN112315542A

Abstract

The present invention relates to the field of surgical equipment, and provides a handheld surgical equipment, including a handheld part, the handheld part including a handheld shell, a motor shell is arranged in the handheld shell, and a motor is fixed in the motor shell; a coolant flow channel is arranged between the inner periphery of the handheld shell and the outer periphery of the motor shell; a flushing port extends along the inner side of the front end of the handheld shell to the coolant flow channel, and is connected with the coolant flow channel; a liquid inlet is located at one end of the handheld shell away from the flushing port, is connected with the coolant flow channel, a flushing pipe is connected at the liquid inlet, and a power cord is also connected at one end of the liquid inlet; a control device includes a control box and a foot switch, a motor driver and a peristaltic pump controller are arranged in the control box, and the foot switch is electrically connected to the motor driver and the peristaltic pump controller respectively. The present invention can control the peristaltic pump and the motor at the same time by stepping on the foot switch, which is convenient to operate and has high operating efficiency; and it is convenient for cooling the motor.

Description

Hand-held surgical device

Technical Field

The invention relates to the technical field of surgical equipment, in particular to handheld surgical equipment.

Background

The existing hand-held operation equipment for orthopedic surgery and bone surgery, drilling and cutting to remove redundant bone tissue needs flushing liquid to flush milling and drilling and operation wounds in the cutting process.

The peristaltic pump for controlling the flow of the flushing liquid and the motor for controlling the rotation of the milling and drilling are separately controlled, so that two persons are required to operate, the operation is inconvenient, and the efficiency is low.

In addition, some motors are sterilized during the sterilization of the handheld part, some motors are not sterilized, and in any case, the risk of cross infection exists, and some handheld surgical devices have no cooling system, and some cooling systems are arranged externally so as to influence the operation.

In addition, the existing milling drill for bone tissue surgery has the defects that the volume of bone fragments obtained by cutting is large, the bone fragments are not easy to discharge, and in addition, independent cutters are needed for drilling and cutting, so that the surgery efficiency is low.

Disclosure of Invention

First, the technical problem to be solved

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

The invention aims to provide a handheld surgical device, which solves the technical problems that a peristaltic pump for controlling flushing fluid flow and a motor for controlling milling and drilling rotation of the existing surgical device are separately controlled, two persons are required to operate, the operation is inconvenient, the efficiency is low and the cooling problem is solved.

(II) technical scheme

In order to solve the above technical problems, an embodiment of the present invention provides a handheld surgical device, including:

the handheld part comprises a handheld shell, a motor shell is arranged in the handheld shell, and a motor is fixed in the motor shell;

The cooling liquid flow passage is arranged between the inner periphery of the handheld shell and the outer periphery of the motor shell;

A flushing port extending along the inside of the front end of the hand-held housing toward the coolant flow channel and communicating with the coolant flow channel;

The liquid inlet is positioned at one end of the handheld shell far away from the flushing port and is communicated with the cooling liquid flow channel, a flushing pipe is connected to the liquid inlet and is used for being connected to a cooling source, and a power line is further connected to one end of the liquid inlet;

the control device comprises a control box and a foot switch, wherein a motor driver and a peristaltic pump controller are arranged in the control box, and the foot switch is electrically connected with the motor driver and the peristaltic pump controller respectively;

the peristaltic pump is arranged on the control box and used for providing power for the flushing pipe;

The motor is electrically connected with the motor driver;

the peristaltic pump is electrically connected with the peristaltic pump controller;

the power cord is connected to a power interface of the control box.

In one embodiment, the peristaltic pump comprises a driving mechanism and a pump head, wherein the driving mechanism is arranged in the control box and is electrically connected with the peristaltic pump controller, the pump head is fixed on the side wall outside the control box, and a flushing pipe of the handheld surgical equipment is used for being connected to the pump head.

In one embodiment, the foot switch is arranged on the ground, the foot switch comprises a base and a foot button arranged on the base, the foot button is connected with two connecting wires, one connecting wire is connected to the motor driver, and the other connecting wire is connected to the peristaltic pump controller.

In a specific embodiment, a mounting sleeve is fixed at the output end of the motor, the mounting sleeve extends out of the handheld shell, and the mounting sleeve is in sealing connection with the handheld shell;

the output end of the motor is connected with a milling drill, and a through hole for the milling drill to penetrate is formed in the axial direction of the mounting sleeve;

the flushing port extends along the sealing connection part of the handheld shell and the mounting sleeve and is communicated with the cooling liquid flow channel.

In a specific embodiment, the milling and drilling comprises a milling section, wherein a first end of the milling section is provided with a drill bit;

the milling section is provided with a plurality of milling blades, and a plurality of cutting grooves are formed in the extending direction of the milling blades at intervals.

In a specific embodiment, the milling cutting edge is a straight groove cutting edge or a spiral cutting edge, and the cutting grooves are spirally distributed in the length direction of the milling cutting edge, or the cutting grooves are uniformly distributed in the length direction of the milling cutting edge.

In a specific embodiment, the surface of the cutting groove is an arc-shaped curved surface, and at least two milling blades are arranged in the circumferential direction of the milling section;

the milling device further comprises a conical section, wherein the conical section is coaxial with the milling section, and the small end of the conical section is connected with the second end of the milling section;

the device further comprises a first positioning section, a limiting connecting section, a second positioning section and a mounting section which are sequentially connected, wherein the large end of the conical section is connected with the first positioning section;

the mounting section is provided with a rotation limiting surface.

In one embodiment, the device further comprises a connecting piece;

the first end of the connecting piece and the mounting section are axially provided with an assembly gap and circumferentially limited, and the second end of the connecting piece is fixedly connected to the output end of the motor;

the milling drill is fixedly sleeved with a bearing, and is axially and relatively fixed with the connecting piece through the bearing;

the connecting piece is provided with a positioning surface matched with the rotation limiting surface;

the rotation limiting surfaces are at least two, and the rotation limiting surfaces are symmetrical along the axial direction of the milling and drilling machine.

In one specific embodiment, the portable electronic device further comprises a front cap in butt joint with the front end of the handheld shell and a flushing hole arranged on the front cap, wherein the flushing hole is communicated with an outlet of the flushing port, and the outlet of the flushing hole is inclined towards the axial direction of the handheld shell;

the handheld shell is located the installation cover department is equipped with the handheld glue film.

In a specific embodiment, the first positioning section of the milling drill is positioned in the front cap through a first bearing;

The second positioning section of the milling drill is positioned in the mounting sleeve through a second bearing, and the second positioning section is close to the mounting section.

(III) beneficial effects

Compared with the prior art, the invention has the following advantages:

The embodiment of the invention provides handheld surgical equipment, which is characterized in that a motor driver and a peristaltic pump controller are arranged in a control box, wherein the motor driver is electrically connected with a motor in the handheld surgical equipment, the peristaltic pump controller is electrically connected with a peristaltic pump, the peristaltic pump is used for providing power for a flushing pipe of the handheld surgical equipment, and a foot switch is respectively and electrically connected with the motor driver and the peristaltic pump controller. The peristaltic pump and the motor can be controlled simultaneously by stepping on the foot switch, the operation is convenient, the operation efficiency is high, and one person can finish the operation.

The handheld surgical equipment provided by the embodiment of the invention comprises the handheld part, wherein the handheld part comprises the handheld shell, the motor shell is arranged in the handheld shell, and the motor is fixed in the motor shell, so that the motor is convenient to miniaturize, and an integrated structure is formed with the motor shell, so that the whole structure is compact and portable, and the handheld surgical equipment can realize simultaneous disinfection and disposal, and truly has no secondary use and cross infection.

And set up the coolant liquid runner between the inner periphery of handheld shell and the periphery of motor housing, be convenient for cool off motor and handheld shell to and cool off the milling of handheld shell front end and bore and clear up the operation surface of a wound.

In addition, a plurality of cutting grooves are formed in the extending direction of the milling cutting edge of the milling section, and can divide the milled bone fragments into small-volume bone fragments, so that the bone fragments can be discharged.

In addition, the milling and drilling machine is connected with the output end of the motor through the connecting piece, an assembly gap is formed in the axial direction of the milling and drilling machine and the connecting piece, the circumferential limit is achieved, the milling and drilling machine is guaranteed to synchronously rotate with the connecting piece, the slipping and idling problem is solved, the power output loss is reduced, the assembly structure and the assembly process are simplified, the milling and drilling machine is limited through the bearing, the milling and drilling machine is prevented from falling, and the high-precision concentricity and the high-precision coaxiality of the milling and drilling machine and the output end of the motor are maintained.

Drawings

FIG. 1 is a schematic diagram of a connection relationship of a control device in a handheld surgical device according to an embodiment of the present invention;

FIG. 2 is an axial cross-sectional view of a handheld surgical device according to an embodiment of the present invention;

FIG. 3 is a schematic view of an embodiment of a milling drill of the present invention;

FIG. 4 is a schematic side view of the milling drill of the present invention from another angle of the embodiment of FIG. 3;

FIG. 5 is a schematic perspective view of a milling segment of the embodiment of FIG. 3 of the milling bit of the present invention;

FIG. 6 is a schematic bottom view of the embodiment of the milling drill of the present invention shown in FIG. 3;

The device comprises a drill bit 1, a milling section 2, a cutting groove 3, a conical section 4, a first positioning section 5, a limiting connecting section 6, a second positioning section 7, a mounting section 8, a rotating limiting surface 9, a milling drill 10, a mounting sleeve 11, a milling cutting edge 12, a milling cutter 13, a motor 14, a front cap 15, a handheld shell 16, a motor shell 17, a flushing hole 18, a flushing hole 19, a sealing ring 20, a bearing 21, a liquid inlet 22, a flushing pipe 23, a power line 24 and a cooling liquid flow channel.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.

Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.

As shown in fig. 1 and 2, an embodiment of the present invention provides a handheld surgical device comprising:

The handheld part comprises a handheld shell 15, a motor shell 16 is arranged in the handheld shell 15, and a motor 13 is fixed in the motor shell 16;

a cooling liquid flow passage 24 provided between the inner periphery of the hand-held housing 15 and the outer periphery of the motor housing 16;

A flushing port 17 extending along the inner side of the front end of the hand-held housing 15 toward the coolant flow passage 24 and communicating with the coolant flow passage 24;

A liquid inlet 21, which is located at one end of the hand-held housing 15 away from the flushing port 17 and is communicated with the cooling liquid flow channel 24, wherein a flushing pipe 22 is connected to the liquid inlet 21, the flushing pipe 22 is used for being connected to a cooling source, and a power line 23 is also connected to one end of the liquid inlet 21;

a peristaltic pump mounted to the control box for powering the flush tube 22;

the motor 13 is electrically connected with the motor driver;

The power cord 23 is connected to the power interface of the control box to power the motor 13.

The peristaltic pump and the motor 13 can be controlled to be started simultaneously by stepping on the foot switch, and when the foot switch is released after the operation is finished, one person can finish the operation, and the operation is convenient and the operation efficiency is high.

In addition, when the handheld operation equipment works, cooling liquid enters the cooling liquid flow channel 24 from the liquid inlet 21, the motor 13 in operation is cooled around the periphery of the motor housing 16, the motor 13 is prevented from being burnt out under the condition of continuous high temperature, the temperature of the handheld housing 15 can be reduced, the handheld operation equipment is convenient for medical staff to hold, the cooling liquid flowing through the motor housing 16 is sprayed out from the flushing port 17, and the cooling liquid can be used for cooling the milling drill 10 at the front end of the handheld housing 15 and cleaning operation wound surfaces, and the handheld operation equipment is simple in structure and convenient to operate.

In addition, the cooling system is arranged between the handheld shell 15 and the motor shell 16, so that on one hand, the motor 13 and the handheld shell 15 are conveniently cooled, the milling drill 10 at the front end of the handheld shell 15 is conveniently cooled, and the surgical wound surface is conveniently cleaned, on the other hand, the motor 13 is conveniently arranged in the handheld shell 15, the motor 13 is conveniently miniaturized, and the motor 13 shell form an integrated structure, so that the whole structure is compact and portable, and meanwhile, simultaneous disinfection and disposal can be realized, and real secondary use and cross infection are avoided.

It should be noted that the "front end" of the hand-held housing 15 refers to the surgical operation end of the hand-held housing 15, i.e., the left end shown in fig. 2. Of course, it is understood that the "rear end" of the hand-held housing 15 refers to the end of the hand-held housing 15 that is distal from the operative end, i.e., the right end as viewed in fig. 2.

It should be noted that the motor driver and peristaltic pump controller are both existing structures.

In addition, peristaltic pumps are composed of three parts, a drive mechanism, such as a drive motor or motor, a pump head and a hose. Peristaltic pumps are like squeezing a fluid filled hose with fingers, and as the fingers slide forward, the fluid in the tube moves forward. Peristaltic pumps are also this principle, except that the fingers are replaced by rollers. Fluid is pumped by alternately squeezing and releasing the flexible delivery hose of the pump. As the hose is squeezed by two fingers, negative pressure is formed in the hose along with the movement of the fingers, and liquid flows along with the negative pressure.

In one embodiment, the driving mechanism is disposed in the control box and can protect the driving mechanism, the driving mechanism is electrically connected with the peristaltic pump controller, the pump head is fixed on the side wall outside the control box, the flushing tube 22 of the handheld surgical device is used for being connected to the pump head, so that the flushing tube 22 of the handheld surgical device is conveniently connected with the pump head, and in particular, the flushing tube 22 is conveniently connected with a hose in the pump head.

The foot switch comprises a base and a foot button arranged on the base, wherein the foot button is connected with two connecting wires, one connecting wire is connected to the motor driver, the other connecting wire is connected to the peristaltic pump controller, and the motor 13 and the peristaltic pump can be simultaneously controlled by pressing the foot button by fixing the base on the ground.

For example, in one embodiment, the cooling fluid flow path 24 may be formed by sandwiching the inner periphery of the hand-held housing 15 with the outer periphery of the motor housing 16, and by setting the outer diameter of the motor housing 16 smaller than the inner diameter of the hand-held housing 15, an annular gap may be formed between the motor housing 16 and the hand-held housing 15, and the annular gap may constitute the cooling fluid flow path 24 as the sandwiching. Thus, the cooling liquid can flow through the interlayer, and surrounds the periphery of the motor housing 16, so as to cool the motor housing 16, further cool the motor 13 in the motor housing 16, avoid overheating of the motor 13, and also cool the hand-held housing 15, and avoid scalding hands.

In the invention, the cooling liquid can be liquid such as normal saline, sterilizing water, disinfectant and the like, and of course, the adopted liquid is harmless to human body, so as to avoid influencing the operation wound.

In one embodiment, the inner periphery of the hand-held housing 15 and/or the outer periphery of the motor housing 16 is formed with grooves that constitute the coolant flow passage 24 between the inner periphery of the hand-held housing 15 and the outer periphery of the motor housing 16. That is, grooves may be formed solely in the inner periphery of the hand-held housing 15, grooves may be formed solely in the outer periphery of the motor housing 16, or grooves may be formed both in the inner periphery of the hand-held housing 15 and in the outer periphery of the motor housing 16, and the grooves may be used for the circulation of the cooling liquid.

Specifically, the grooves may be in the form of grooves, or may be formed for the space between two adjacent separator strips, and the specific form is not limited as long as the flow of the coolant can be guided.

In one embodiment, the groove extends helically along the inner circumference of the hand-held housing 15 from one end of the hand-held housing 15 to the other end;

And/or, the groove extends spirally from one end of the motor housing 16 to the other end along the periphery of the motor housing 16, and the groove is arranged spirally, so that the cooling liquid can be guided to flow to the whole periphery of the motor housing 16 along the spiral, and the cooling of the motor housing 16 can be achieved, and further the motor 13 in the motor housing 16 is cooled, so that overheating of the motor 13 is avoided, meanwhile, the handheld housing 15 is also cooled, and scalding of hands is avoided.

In another embodiment, the inner periphery of the hand-held housing 15 is provided with a plurality of grooves extending along the axial direction thereof at intervals, and the plurality of grooves and the outer periphery of the motor housing 16 form the cooling liquid flow channel 24;

And/or, the outer periphery of the motor housing 16 is provided with a plurality of grooves extending along the axial direction thereof at intervals, and the plurality of grooves and the inner periphery of the hand-held housing 15 form the cooling fluid flow passage 24 therebetween. So that the cooling liquid flows from one end to the other end of the outer periphery of the motor housing 16 along the grooves, and/or the cooling liquid flows from the inner Zhou Yiduan of the hand-held housing 15 to the other end along the grooves, the cooling of the motor housing 16 can be also performed, and the motor 13 in the motor housing 16 is cooled, so that the motor 13 is prevented from overheating, and meanwhile, the hand-held housing 15 is also cooled, so that the hand scalding is avoided.

In addition, the grooves may be elongated, wavy, etc., and the specific shape is not limited.

In one embodiment, the flushing port 17 is a long hole, and the long hole is arranged along the axial direction of the handheld housing 15, and the aperture of the long hole is 0.6-0.8 mm, preferably 0.7mm, so that the cooling liquid sprayed from the flushing port 17 has a certain pressure, and is convenient for flushing the wound.

As shown in fig. 2, in a specific embodiment, the device further includes a front cap 14 abutting against the front end of the hand-held housing 15 and a flushing hole 18 provided on the front cap 14, and a sealing ring 19 is provided at the abutting joint to ensure a sealing effect, the flushing hole 18 is communicated with the outlet of the flushing hole 17, the aperture of the flushing hole 18 can be matched with the flushing hole 17, and the outlet of the flushing hole 18 is inclined towards the axial direction of the hand-held housing 15, so that the cooling liquid sprayed from the flushing hole 18 is directly flushed onto the milling drill 10 extending from the front cap 14 in a short distance, the normal operation is not affected, and the wound in the operation is cleaned to avoid infection.

In one embodiment, as shown in fig. 2, the motor housing 16 is fixed with a mounting sleeve 11 at the output end of the motor 13, the mounting sleeve 11 extends out of the handheld housing 15, and in order to ensure that the mounting sleeve 11 is firmly connected with the handheld housing 15, the mounting sleeve 11 is in interference fit with the handheld housing 15, so that a sealing connection is formed between the mounting sleeve 11 and the handheld housing 15, that is, the cooling liquid does not directly pass through the periphery of the mounting sleeve 11;

The output end of the motor 13 is connected with a milling drill 10, the milling drill 10 is driven to rotate by the motor 13 so as to cut or polish a part to be operated, a through hole for the milling drill 10 to penetrate is formed in the axial direction of the mounting sleeve 11, in order to ensure that the milling drill 10 rotates stably, a bearing 20 is fixedly sleeved outside the milling drill 10, and the outer ring of the bearing 20 is fixed with the inner periphery of the mounting sleeve 11;

the flushing port 17 extends along the sealing connection part of the handheld shell 15 and the mounting sleeve 11 and is communicated with the cooling liquid flow channel 24, so that cooling liquid passing through the cooling liquid flow channel 24 is sprayed out of the flushing port 17 only, the spraying pressure is ensured to meet the operation requirement, and the position of the flushing port 17 is positioned above the mounting sleeve 11, so that the normal operation of an operation is not influenced, and the milling cutter can be directly flushed conveniently.

In one embodiment, the hand-held housing 15 is provided with a hand-held adhesive layer at the mounting sleeve 11, and the hand-held adhesive layer can be made of rubber pad, so that the hand feeling is improved and the slipping during operation is avoided.

According to the embodiment of the invention, the milling drill 10 comprises the milling section 2, the drill bit 1 is formed at the first end of the milling section 2, and the milling section 2 and the drill bit 1 are integrated into a whole, so that the milling drill 10 has the functions of drilling and milling at the same time, is more efficient, and also enables the operation to be simpler, more convenient and flexible, simplifies the operation tool and reduces the cost of the operation tool.

And, the milling section 2 is provided with a plurality of milling blades 12, a plurality of cutting grooves 3 are formed in the extending direction of the milling blades 12 at intervals, the cutting grooves 3 are used for cutting off the bone fragments milled in the extending direction of the milling blades 12 into a plurality of small-volume bone fragments, and the reduction of the volume of the bone fragments is beneficial to bone fragment discharge.

In the technical scheme, the drill has the functions of drilling and milling, simplifies the operation tool, is more flexible and convenient to operate, can reduce the size of milling bone fragments, and is beneficial to bone fragment discharge.

Preferably, the milling blade 12 is a straight flute blade or a helical blade. The straight groove-shaped blade is simple and convenient to process, and the spiral blade has high milling efficiency and is beneficial to bone fragments discharge. Wherein the milling edge 12 shown in fig. 2-6 is a straight flute edge.

Further, as shown in fig. 3 to 5, the plurality of cutoff grooves 3 are spirally distributed in the longitudinal direction of the milling blade 12, and the milling blade is easy to process and has high structural strength. The spiral shape formed by the cutoff groove 3 may be an equidistant spiral shape or a variable pitch spiral shape.

The cutoff grooves 3 are spirally distributed on the straight groove-shaped blade as shown in fig. 2 to 6, and when the milling blade 12 is a spiral blade (not shown in the drawings), the cutoff grooves 3 may be distributed along the spiral direction of the spiral blade, or may be alternately spirally distributed with the spiral direction of the spiral blade.

Or the cutting groove 3 is an integral groove body formed by connecting the milling sections 2 in a spiral manner, and can also play a role in cutting bone fragments.

In addition, the cutoff grooves 3 are not limited to be spirally distributed along the milling blade 12, but may be annularly distributed in a plurality of layers along the length direction of the milling blade 12, for example, the cutoff grooves 3 may be formed in a plurality of integral annular grooves along the length direction of the milling blade 12, or each annularly distributed layer may be provided with a plurality of cutoff grooves 3.

Furthermore, the cutting grooves 3 are distributed at equal intervals in the length direction of the milling cutting edge 12, so that the cutting grooves are uniformly distributed, and the volume uniformity of the milled bone fragments is improved. Such as in a spiral equidistant distribution as described above, or in a circular equidistant distribution, a linear equidistant distribution. For example, as shown in fig. 2 to 6, a plurality of cutoff grooves 3 are equally spaced in the longitudinal direction of each milling blade 12 to form a multi-cutoff milling blade 12.

Furthermore, the surface of the cutting groove 3 is an arc-shaped curved surface, the cutting groove 3 with the arc-shaped curved surface enables the milling blade 12 to form an arc-shaped section so as to cut off bone fragments in the milling process, the cutting groove 3 can be formed by cutting through a cylindrical cutter head, the whole processing is simple and convenient, and arc transition is facilitated.

The surface shape of the cutoff groove 3 is not limited to an arc-shaped curved surface, but may be a prismatic curved surface such as a rectangle.

In connection with fig. 2-6, in one embodiment, the milling segment 2 is provided with at least two milling edges 12 in the circumferential direction, the number of milling edges 12 being increased to increase the milling efficiency. Preferably, three milling blades 12 are arranged in the circumferential direction of the milling section 2, and the milling blades 12 have stable structural strength and are convenient for discharging bone fragments.

In another embodiment, referring to fig. 3-5, the milling drill 10 further includes a conical section 4, the conical section 4 is coaxial with the milling section 2, and the small end of the conical section 4 is connected with the second end of the milling section 2, that is, the radial dimension of the conical section 4 decreases toward the milling section 2, so as to meet the requirement of small diameter of the milling section 2, and ensure the overall structural strength. The diameter of the milling section 2 can be reduced to 1.9mm, the size of the conical section 4 is increased to 30-50 mm, and the whole length of the milling drill 10 is increased on the premise of ensuring the structural strength, so that the operation is facilitated.

Referring to fig. 3-6, in another embodiment, the milling drill 10 further includes a first positioning section 5, a limiting connection section 6, a second positioning section 7 and a mounting section 8, which are sequentially connected and integrally formed, where the first positioning section 5 is connected with the large end of the conical section 4, and a retainer ring is sleeved between the second positioning section 7 and the mounting section 8 for axial limiting. The Rockwell hardness of the milling drill 10 is not lower than HRC50.

It should be noted that, the drill bit 1, the milling section 2, the conical section 4, the first positioning section 5, the limiting connecting section 6, the second positioning section 7 and the mounting section 8 are sequentially arranged along the axial direction and are integrally formed, and the first positioning section 5, the limiting connecting section 6 and the second positioning section 7 are cylindrical shaft sections.

Further, the mounting section 8 is provided with a rotation limiting surface 9, and the output end of the motor 13 is provided with a mounting structure matched with the mounting section 8 so as to be convenient to mount. Specifically, the output shaft of the motor 13 is connected with a connecting shaft sleeve, a hole structure in the connecting shaft sleeve is matched with the mounting section 8, and an assembly gap is formed between the mounting section 8 and the connecting shaft sleeve, so that the mounting section 8 can be flexibly pulled out and inserted relative to the connecting shaft sleeve in the assembly process. In the process of assembling the milling drill 10 and the motor 13, the connecting shaft sleeve limits the rotation of the mounting section 8, so that the synchronous rotation is facilitated, the mounting section 8 can be adjusted in a plugging manner relative to the output shaft of the motor 13, and can be easily plugged in and pulled out during the mounting process so as to be assembled with other parts, such as the bearing 20, so that the assembly process is simplified, the assembly precision is ensured, the slip and idle running risks are avoided, and the power output loss is reduced.

The rotation limiting surface 9 is formed by arranging a plane on the column body along the axial direction. The number of the rotation limiting surfaces 9 on the mounting section 8 can be one or more, preferably two, so that a symmetrical structure is formed, and the strength and the stability of the mounting section 8 are ensured. The cross section of the mounting section 8 can also be rectangular, regular hexagonal and other regular polygonal shapes, so that the rotation limiting function is met.

In another embodiment, the output shaft of the motor 13 is fixedly connected to the connecting sleeve, i.e. the mounting section 8 is connected to the connecting sleeve of the output shaft of the motor 13.

Specifically, the first positioning section 5 is axially fixed in the front cap 14 through the bearing 20, the second positioning section 7 is axially fixed in the mounting sleeve 11 through the bearing 20, the bearing 20 has good supporting stability, the radial runout of the milling and drilling machine 10 is not more than 0.08mm, the axial runout of the milling and drilling machine 10 is not more than 0.5mm, and the milling and drilling machine 10 is not easy to slip. The drill bit 1, the milling section 2 and the conical section 4 extend out of the mounting sleeve 11, the first positioning section 5 is arranged in the front cap 14, and the limiting connecting section 6, the second positioning section 7 and the mounting section 8 are arranged in the mounting sleeve 11.

Specifically, the milling drill 10 is connected with an output shaft of the motor 13 through a connecting piece, the motor 13 rotates the milling drill 10, and the milling drill 10 performs drilling or cutting of bone tissues during the rotation movement process. Wherein, the connecting piece fixed connection is in the output of motor 13, mills boring 10 and connecting piece synchronous rotation.

Further, the end of the milling drill 10 is provided with a mounting section 8, the mounting section 8 being intended to be assembled with a connecting piece. The first end of the connecting piece is axially and slidably connected with the mounting section 8, and the first end of the connecting piece is circumferentially limited to the mounting section 8. The mounting section 8 can axially slide relative to the connecting piece and is not fixedly connected with the connecting piece, so that the synchronous rotation of the scalpel body and the connecting piece can be ensured, the problem of slip and idle rotation is solved, the power output loss is reduced, the mounting mode of the scalpel body and the connecting piece is simplified, and the assembly precision requirement between the mounting section 8 and the connecting piece is reduced.

The above-mentioned connection mode of the scalpel body realizes the circumferential limit of the scalpel body and the connecting piece, in order to solve the axial positioning problem of the scalpel body, a bearing 20 is arranged in the axial direction of the scalpel body, the inner ring of the bearing 20 is fixedly connected with the scalpel body, the outer ring of the bearing 20 is fixed in a fixed structure (a mounting sleeve 11 described below) in the front cap 14 or in a housing (the housing of the bone tissue surgical device below), namely, the axial direction of the scalpel body is relatively fixed with the connecting piece through the bearing 20, the positioning precision of the bearing 20 is high, and concentricity and coaxiality can be ensured.

Through the cooperation of connecting piece and bearing 20, realized being spacing to the circumference and the axial of surgical knife body, guarantee that the surgical knife body can rotate with the connecting piece is synchronous, and then the surgical knife body rotates with drive arrangement's output is synchronous.

Specifically, the first positioning section 5 of the milling drill 10 is positioned in the front cap 14 by a first bearing;

the second positioning section 7 of the milling drill 10 is positioned in the mounting sleeve 11 through a second bearing, and the second positioning section 7 is close to the mounting section 8.

The first bearing and the second bearing are matched in the axial direction of the milling drill 10 to fix and limit the milling drill, so that the assembly precision is further improved, the coaxiality in the use process can be ensured, and the operation accuracy is further ensured.

In addition, the bearing for axially positioning the milling drill 10 may be only the first bearing or the second bearing, and may be selected according to actual requirements. Or the first positioning section 5 or the second positioning section 7 can be close to the length center of the milling drill 10, and a bearing is arranged, so that higher assembly precision can be ensured.

The embodiment shows that the invention can be controlled by one button through the foot switch, can finish operation by one person, has convenient operation and high operation efficiency, is convenient for cooling the motor 13 and the handheld shell 15, cooling the milling drill 10 at the front end of the handheld shell 15 and cleaning the surgical wound surface, and adopts the motor 13 to be arranged in the handheld shell 15 to form an integrated structure, so that the integrated structure is compact and portable, can realize simultaneous disinfection and disposal, and really has no secondary use and cross infection.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. A handheld surgical device, comprising:

The motor is electrically connected with the motor driver;

The power line is connected to a power interface of the control box;

The peristaltic pump comprises a driving mechanism and a pump head, wherein the driving mechanism is arranged in the control box and is electrically connected with the peristaltic pump controller;

the foot switch is arranged on the ground and comprises a base and a foot button arranged on the base, wherein the foot button is connected with two connecting wires, one connecting wire is connected to the motor driver, and the other connecting wire is connected to the peristaltic pump controller.

2. The handheld surgical device of claim 1, wherein the motor housing is secured with a mounting sleeve at an output end of the motor, the mounting sleeve extending out of the handheld housing, the mounting sleeve being sealingly connected to the handheld housing;

3. The handheld surgical device of claim 2, wherein the milling drill comprises a milling segment having a first end formed with a drill bit;

4. The hand-held surgical device of claim 3, wherein the milling blade is a straight flute blade or a helical blade, and the chopping grooves are helically distributed along the length of the milling blade, or the chopping grooves are equally spaced along the length of the milling blade.

5. The hand-held surgical device according to claim 3, wherein the surface of the cutoff slot is an arc-shaped curved surface, and at least two milling blades are provided in the circumferential direction of the milling section;

the handheld surgical device further comprises a conical section coaxial with the milling section, and a small end of the conical section is connected with a second end of the milling section;

The handheld surgical equipment further comprises a first positioning section, a limiting connecting section, a second positioning section and a mounting section which are sequentially connected, wherein the large end of the conical section is connected with the first positioning section;

the mounting section is provided with a rotation limiting surface.

6. The hand-held surgical device of claim 5, further comprising a connector;

7. The handheld surgical device of claim 6, further comprising a front cap interfacing with a front end of the handheld housing and an irrigation port provided on the front cap, the irrigation port in communication with an outlet of the irrigation port, the outlet of the irrigation port being inclined toward an axial direction of the handheld housing;

8. The handheld surgical device of claim 7, wherein the first positioning segment of the milling drill is positioned within the front cap by a first bearing;