CN211213353U

CN211213353U - Hand-held surgical device

Info

Publication number: CN211213353U
Application number: CN201921254977.0U
Authority: CN
Inventors: 于春江
Original assignee: Hunan Yueda Biomedical Co ltd
Current assignee: Hunan Yueda Biomedical Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-08-11
Anticipated expiration: 2029-08-05

Abstract

The utility model relates to the field of surgical equipment, and provides handheld surgical equipment, which comprises a handheld part, wherein 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 channel is arranged between the inner periphery of the handheld shell and the outer periphery of the motor shell; the flushing port extends towards the cooling liquid flow channel along the inner side of the front end of the handheld shell and is communicated with the cooling liquid flow channel; the liquid inlet is positioned at one end of the handheld shell, which is far away from the flushing port, and is communicated with the cooling liquid flow channel, the liquid inlet is connected with a flushing pipe, and one end of the liquid inlet is also connected with a power line; 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 utility model can control the peristaltic pump and the motor at the same time by stepping on the foot switch, and has convenient operation and high operation efficiency; and facilitates cooling of the motor.

Description

Hand-held surgical device

Technical Field

The utility model relates to a surgical equipment technical field especially relates to a hand-held type surgical equipment.

Background

The existing hand-held surgical equipment for orthopedic surgery, drilling, cutting and removing redundant bone tissues needs flushing fluid to flush milling drills and operation wounds in the cutting process.

The peristaltic pump for controlling the flow of flushing liquid and the motor for controlling the rotation of the milling drill of the current surgical equipment are separately controlled, two persons are needed for operation, the operation is inconvenient, and the efficiency is low.

In addition, the motors in the hand-held part disinfection are disinfected, and the motors in the hand-held part disinfection are not disinfected, so that the risk of cross infection exists; some of these handheld surgical devices have no cooling system, and some cooling systems are external and affect the surgery.

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

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

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

The utility model aims at providing a hand-held type surgical equipment to solve the peristaltic pump that present surgical equipment control flush fluid flows and control and mill to bore pivoted motor and be separately controlled, need two people to operate, the technical problem of inconvenient, the inefficiency of operation and cooling problem.

(II) technical scheme

In order to solve the above technical problem, an embodiment of the present invention provides a handheld surgical device, which includes:

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 channel is arranged between the inner periphery of the handheld shell and the outer periphery of the motor shell;

the flushing port extends towards the cooling liquid channel along the inner side of the front end of the handheld shell and is communicated with the cooling liquid channel;

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

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

In a specific 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 to a side wall outside the control box, and an irrigation tube of the handheld surgical device 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 on the motor housing at the output end of the motor, the mounting sleeve extends out of the handheld housing, and the mounting sleeve is connected with the handheld housing in a sealing manner;

the output end of the motor is connected with a milling drill, and a through hole through which the milling drill penetrates is axially arranged on the mounting sleeve;

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

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

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

In a specific embodiment, the milling cutting edge is a straight flute 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 equidistantly distributed in the length direction of the milling cutting edge.

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

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 positioning device also comprises a first positioning section, a limiting connection 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 method further comprises: a connecting member;

the first end of the connecting piece and the mounting section are axially provided with an assembling 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 the milling drill 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 number of the rotation limiting surfaces is at least two, and the rotation limiting surfaces are axially symmetrical along the milling drill.

In a specific embodiment, the handheld shell further comprises a front cap butted with the front end of the handheld shell and a flushing hole arranged on the front cap, 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 and holds the glue film.

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

and a 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) advantageous effects

Compared with the prior art, the utility model has the advantages of it is following:

the embodiment of the utility model provides a hand-held surgical device, which adopts a motor driver and a peristaltic pump controller arranged in a control box; the motor driver is used for being electrically connected with a motor in the handheld surgical equipment; the peristaltic pump controller is used for being electrically connected with a peristaltic pump, and the peristaltic pump is used for providing power for an irrigation tube of the handheld surgical equipment; and the foot switch is electrically connected with the motor driver and the peristaltic pump controller respectively. Just can control peristaltic pump and motor simultaneously through foot pedal switch, convenient operation, operating efficiency are high, just can accomplish the operation alone.

An embodiment of the utility model provides a pair of hand-held type surgical equipment, including handheld portion, handheld portion includes handheld shell, be equipped with motor housing in the handheld shell, motor housing internal fixation has the motor, and the motor of being convenient for is miniaturized, forms a body structure with motor housing for overall structure is compact, portable, can realize disinfecting simultaneously moreover and abandon simultaneously, accomplishes real no secondary use and cross infection.

And a cooling liquid flow channel is arranged between the inner periphery of the handheld shell and the outer periphery of the motor shell, so that the motor and the handheld shell can be cooled conveniently, and the front end of the handheld shell can be cooled, milled and drilled and the surgical wound can be cleaned conveniently.

In addition, a drill bit is formed at the first end of the milling section of the milling drill, the milling section and the drill bit are integrated into a whole, and meanwhile, the drilling and milling functions are achieved, so that the surgical tool is simplified, and the operation is more flexible and convenient; and a plurality of cutting grooves are arranged in the extending direction of the milling cutting edge of the milling section, and the cutting grooves can divide the milled bone fragments into small-volume bone fragments and are beneficial to discharging the bone fragments.

In addition, the milling drill is connected with the output end of the motor through the connecting piece, and an assembly gap is formed between the milling drill and the connecting piece in the axial direction and is limited in the circumferential direction, so that the milling drill and the connecting piece can rotate synchronously, the problem of slipping and idling is solved, the power output loss is reduced, and the assembly structure and the assembly process are simplified; and the axial of milling and drilling is limited through the bearing, so that the milling and drilling is prevented from falling, and the high-precision concentricity and coaxiality of the milling and drilling and the output end of the motor are kept.

Drawings

Fig. 1 is a schematic view illustrating 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 in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an embodiment of the milling and drilling machine of the present invention;

FIG. 4 is a schematic side view of another angle of the embodiment of FIG. 3 of the milling and drilling apparatus of the present invention;

fig. 5 is a perspective view of the milling section of the milling and drilling machine according to the embodiment of fig. 3;

fig. 6 is a schematic bottom view of the embodiment of fig. 3 of the milling and drilling machine of the present invention;

in the figure: 1: a drill bit; 2: milling a section; 3: a cut-off groove; 4: a tapered section; 5: a first positioning section; 6: a limiting connection section; 7: a second positioning section; 8: an installation section; 9: rotating the limiting surface; 10: milling and drilling; 11: installing a sleeve; 12: milling a cutting edge; 13. a motor; 14. a front cap; 15: a hand-held housing; 16: a motor housing; 17: flushing the opening; 18: flushing the hole; 19: a seal ring; 20: a bearing; 21: a liquid inlet; 22: a flush tube; 23: a power line; 24: and a cooling liquid flow passage.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but 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", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed 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, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected 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.

In the description of the present invention, the terms "plurality", and "plural" mean two or more unless otherwise specified.

As shown in fig. 1 and 2, embodiments of the present invention provide 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 coolant flow channel 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 toward the coolant flow channel 24 along the inside of the front end of the hand held housing 15 and communicating with the coolant flow channel 24;

the liquid inlet 21 is positioned at one end, far away from the flushing port 17, of the handheld shell 15 and is communicated with the cooling liquid flow channel 24, 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 further connected to one end, positioned at the liquid inlet 21, of the flushing pipe 22;

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

the motor 13 is electrically connected with the motor driver;

the power line 23 is connected to a power interface of the control box to supply power to the motor 13.

Just can control peristaltic pump and motor 13 simultaneously and open through foot pedal switch, when the operation finish after loosen pedal switch can, just can accomplish the operation alone, convenient operation, operating efficiency height.

Moreover, when the handheld surgical equipment works, the cooling liquid enters the cooling liquid flow passage 24 from the liquid inlet 21 and surrounds the periphery of the motor shell 16 to cool the working motor 13, so that the motor 13 is prevented from being burnt out under the condition of continuous high temperature, the temperature of the handheld shell 15 can be reduced, and the handheld surgical equipment is convenient for medical staff to hold; the cooling liquid flowing through the motor shell 16 is sprayed out from the flushing port 17, so that the milling and drilling machine 10 at the front end of the handheld shell 15 can be cooled, the surgical wound can be cleaned, the structure is simple, and the operation is convenient.

In addition, a 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 cooled, and a surgical wound is conveniently cleaned; on the other hand, the motor 13 is arranged in the handheld shell 15, so that the motor 13 is convenient to miniaturize, and the motor 13 and the shell of the motor 13 form an integrated structure, so that the whole structure is compact and portable, and the simultaneous disinfection and disposal can be realized, thereby really avoiding secondary use and cross infection.

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 will be understood that the "rear end" of the hand held housing 15 refers to the end of the hand held housing 15 remote from the surgical procedure end, i.e., the right end as viewed in fig. 2.

It should be noted that the motor driver and the peristaltic pump controller are both of the conventional structure.

Furthermore, the peristaltic pump is particularly composed of three parts: drive mechanisms such as a drive motor or motors, pump heads and hoses. Peristaltic pumps move forward as a finger squeezes a fluid filled hose, sliding the fluid in the tube forward. Peristaltic pumps are also this principle, with the fingers being replaced by rollers. The fluid is pumped by alternately squeezing and releasing the elastic delivery hose of the pump. Just like squeezing the hose with two fingers, as the fingers move, negative pressure is formed in the hose, and the liquid flows along with the negative pressure.

In a specific embodiment, the driving mechanism is arranged in the control box and can protect the driving mechanism, and the driving mechanism is electrically connected with the peristaltic pump controller; the pump head is fixed in the lateral wall outside the control box, the flushing pipe 22 of handheld surgical equipment is used for being connected to the pump head, is convenient for the flushing pipe 22 of handheld surgical equipment with the pump head is connected, and the hose connection in flushing pipe 22 and the pump head of specifically being convenient for.

In one embodiment, the foot switch is arranged on the ground, so that the foot control of a surgical operator is facilitated; 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, the other connecting wire is connected to the peristaltic pump controller, the base is fixed on the ground, and the motor 13 and the peristaltic pump can be controlled simultaneously by pressing the foot button.

There are several specific forms for the coolant flow passage 24: for example, in one embodiment, an interlayer is formed between the inner periphery of the hand held housing 15 and the outer periphery of the motor housing 16, and an annular gap may be formed between the motor housing 16 and the hand held housing 15 by setting the outer diameter of the motor housing 16 to be smaller than the inner diameter of the hand held housing 15, and the annular gap serves as the interlayer to form the coolant flow passage 24. Therefore, the cooling liquid can flow through the interlayer to surround the periphery of the motor shell 16 and cool the motor shell 16, so that the motor 13 in the motor shell 16 is cooled, the overheating of the motor 13 is avoided, and meanwhile, the handheld shell 15 is also cooled, and the scalding of hands is avoided.

It should be noted that, in the present invention, the cooling liquid can be physiological saline, sterilizing water, disinfectant, etc., and these liquids need to be harmless to human body, avoiding affecting the operation wound.

In one embodiment, the inner circumference of the hand held housing 15 and/or the outer circumference of the motor housing 16 are formed with grooves that form the coolant flow channel 24 between the inner circumference of the hand held housing 15 and the outer circumference of the motor housing 16. That is, the groove may be formed on the inner circumference of the hand held housing 15 alone, or may be formed on the outer circumference of the motor housing 16 alone, or may be formed on both the inner circumference of the hand held housing 15 and the outer circumference of the motor housing 16; the grooves are used for the circulation of cooling liquid.

Specifically, the groove may be in the form of a groove, and may also be formed in the space between two adjacent division bars, and the specific form is not limited as long as the cooling liquid can be guided to flow.

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

and/or, the groove follows one end of motor housing 16 is followed the periphery of motor housing 16 is the spiral and extends to the other end, sets up the groove into the spiral, can guide the coolant liquid along the whole periphery of spiral flow to motor housing 16, can play the same and cool off motor housing 16, and then cools off motor 13 in motor housing 16, avoids motor 13 overheated, also cools off handheld shell 15 simultaneously, avoids scalding one's hand.

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

and/or, motor housing 16's periphery interval is equipped with multichannel along its axial extension the ditch groove, multichannel constitute between the ditch groove with the internal periphery of handheld shell 15 the coolant liquid runner 24. Thereby the coolant liquid flows to the other end along the slot from the outer periphery one end of motor housing 16, and/or, the coolant liquid flows to the other end along the slot from the inner periphery one end of handheld shell 15, also can play and cool off motor housing 16 equally, and then cools off motor 13 in the motor housing 16, avoids motor 13 overheated, also cools off handheld shell 15 simultaneously, avoids scalding one's hand.

In addition, the grooves may be in the shape of a strip, a wave, etc., and the specific shape is not limited.

In a specific embodiment, the flushing port 17 is a long hole, and is arranged along the axial direction of the handheld shell 15, and the aperture of the long hole is 0.6-0.8 mm, preferably 0.7 mm; ensure that the cooling liquid sprayed from the irrigation port 17 has a certain pressure, which is convenient for irrigating the wound.

As shown in fig. 2, in a specific embodiment, the medical hand-held device further includes a front cap 14 abutting against the front end of the hand-held housing 15 and a flushing hole 18 formed in the front cap 14, and a sealing ring 19 is disposed at the abutting position to ensure a sealing effect, the flushing hole 18 is communicated with an outlet of the flushing port 17, the diameter of the flushing hole 18 can be matched with that of the flushing port 17, and the outlet of the flushing hole 18 is inclined toward the axial direction of the hand-held housing 15, so that the cooling liquid sprayed from the flushing hole 18 can flush the milling and drilling bit 10 extending from the front cap 14 in a short distance and directly without affecting the normal operation, and can clean the wound in the operation to avoid infection.

In one embodiment, as shown in fig. 2, a mounting sleeve 11 is fixed on the motor housing 16 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 stably connected with the handheld housing 15, the mounting sleeve 11 is in interference fit with the handheld housing 15, so that a sealed 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 through the motor 13 so as to cut or polish a part needing to be operated, a through hole for the milling drill 10 to penetrate through is formed in the axial direction of the mounting sleeve 11, a bearing 20 is fixedly sleeved outside the milling drill 10 in order to ensure that the milling drill 10 rotates stably, 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 the cooling liquid passing through the cooling liquid flow channel 24 is only sprayed out from the flushing port 17, the spraying pressure can meet the requirement of an operation, the position of the flushing port 17 is located above the mounting sleeve 11, the normal operation of the 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 position of the mounting sleeve 11, and the hand-held adhesive layer can be made of a rubber pad, so that the hand feeling is increased and the hand-held adhesive layer is prevented from slipping off during an operation.

The utility model discloses an embodiment, milling and drilling 10 is including milling section 2, and the first end that mills section 2 is formed with drill bit 1, and milling section 2 and drill bit 1 are integrated as an organic whole, make milling and drilling 10 have the function of drilling and milling simultaneously, and are more high-efficient, also make the operation more simple and convenient, nimble, simplify the surgical tool, reduce the cost of surgical tool.

And, mill section 2 and be equipped with a plurality of milling cutting edge 12, mill the extending direction of cutting edge 12 and be equipped with a plurality of truncation groove 3 at the interval, truncation groove 3 is used for cutting the bone bits that milling cutting edge 12 extending direction milled into a plurality of small-size bone bits, and the volume that reduces the bone bits helps bone bits to discharge.

In the technical scheme, the bone chip milling machine has the functions of drilling and milling, simplifies surgical tools, is more flexible and convenient to operate, can reduce the volume of milled bone chips, and is beneficial to discharging the bone chips.

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

Further, as shown in fig. 3 to 5, the plurality of cutting grooves 3 are spirally distributed in the length direction of the milling blade 12, so that the processing is simple and the structural strength is high. The spiral formed by the truncation grooves 3 may be an equally-spaced spiral or a variably-spaced spiral.

The intercepting grooves 3 are distributed in a spiral shape on the straight groove-shaped blade edge, as shown in fig. 2-6; when the milling edge 12 is a helical edge (not shown), the truncation grooves 3 may be distributed along the helical direction of the helical edge, or may form an alternating helical distribution with the helical direction of the helical edge.

Or the cutting groove 3 is communicated with the milling section 2 in a spiral shape to form an integral groove body, and can also have the function of cutting off bone fragments.

In addition, the truncated grooves 3 are not limited to being distributed in a spiral shape along the milling edge 12, but may be distributed in multiple layers in a ring shape along the length direction of the milling edge 12; if the interruption groove 3 forms a plurality of integral annular grooves in the longitudinal direction of the milling cutting edge 12, or if a plurality of interruption grooves 3 are provided per annularly distributed layer.

Furthermore, the cutting grooves 3 are distributed at equal intervals in the length direction of the milling cutting edge 12, and are distributed uniformly, so that the volume uniformity of milled bone fragments is improved. Such as the spiral shape, or the annular shape, or the linear shape. For example, as shown in fig. 2 to 6, a plurality of cutting grooves 3 are equally spaced in the length direction of each milling edge 12, so as to form a plurality of cutting milling edges 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 facilitate the cutting of the bone fragment milling process, and the cutting groove 3 can be formed by cutting through a cylindrical cutter head, so that the whole processing is simple and convenient, and the arc transition is beneficial to the bone fragment cutting.

The surface shape of the cut-off groove 3 is not limited to the arc-shaped curved surface, and may be a prismatic curved surface such as a rectangular curved surface.

In one embodiment, as shown in connection with fig. 2-6, the milling segment 2 is provided with at least two milling edges 12 in the circumferential direction, and the number of milling edges 12 is increased to improve the milling efficiency. Preferably, the milling segment 2 is provided with three milling cutting edges 12 in the circumferential direction, and the milling cutting edges 12 are stable in structural strength and facilitate bone fragment discharge.

In another embodiment, as shown in fig. 3 to 5, the milling and drilling machine 10 further includes a tapered section 4, the tapered section 4 is coaxial with the milling section 2, and the small end of the tapered section 4 is connected to the second end of the milling section 2, i.e. the radial dimension of the tapered section 4 decreases toward the direction close to 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, the overall length of the milling drill 10 is increased on the premise that the structural strength is guaranteed, and the operation is facilitated.

In another embodiment, as shown in fig. 3-6, the milling and drilling machine 10 further includes a first positioning section 5, a limiting connection section 6, a second positioning section 7, and an installation section 8, which are sequentially connected and integrally formed, the first positioning section 5 is connected to the large end of the tapered section 4, and a retainer ring is sleeved between the second positioning section 7 and the installation section 8 for axial limiting. The Rockwell hardness of the milling drill 10 is not lower than HRC 50.

It should be noted that the drill bit 1, the milling section 2, the conical section 4, the first positioning section 5, the limiting connection section 6, the second positioning section 7 and the mounting section 8 are sequentially arranged along the axial direction and integrally formed, and the first positioning section 5, the limiting connection section 6 and the second positioning section 7 are all 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 mounted. Specifically, be connected with the connecting axle sleeve on motor 13's the output shaft, the pore structure and the installation section 8 phase-match in the connecting axle sleeve are equipped with the fit-up gap between installation section 8 and the connecting axle sleeve to installation section 8 can be pulled out for the connecting axle sleeve is nimble to be inserted in the assembly process. In the process of assembling the milling drill 10 and the motor 13, the connecting shaft sleeve carries out rotation limiting on the mounting section 8, so that synchronous rotation is facilitated; and the mounting section 8 can be pulled out and inserted and adjusted relative to the output shaft of the motor 13, and can be easily inserted and pulled out during mounting so as to be assembled with other parts, such as the bearing 20, thereby simplifying the assembly process, ensuring the assembly precision, avoiding the risk of slipping and idling and reducing the power output loss.

Wherein, the forming mode of the rotation limiting surface 9 is as follows: a plane is arranged on the column body along the axial direction to form a rotation limiting surface 9. 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 function of rotation limiting is met.

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

Specifically, first location section 5 is in preceding cap 14 through bearing 20 axial fixation, and second location section 7 is all in the installation cover 11 through bearing 20 axial fixation, and bearing 20 support stability is good, makes the radial runout of milling and drilling 10 be not more than 0.08mm, the axial float is not more than 0.5mm to milling and drilling 10 is difficult for the slippage. 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 a 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 motion process. Wherein, the connecting piece is fixedly connected to the output end of the motor 13, and the milling drill 10 and the connecting piece rotate synchronously.

Furthermore, the end of the milling drill 10 is provided with a mounting section 8, and the mounting section 8 is used for assembling with the connecting piece. The first end of connecting piece axial sliding connection installation section 8, and the spacing installation section 8 of first end circumference of connecting piece. The mounting section 8 can axially slide relative to the connecting piece, is not fixedly connected to the connecting piece, can ensure that the surgical knife body and the connecting piece synchronously rotate, solves the problem of slipping and idling, reduces power output loss, simplifies the mounting mode of the surgical knife body and the connecting piece, and reduces the requirement on the assembly precision between the mounting section 8 and the connecting piece.

The above-mentioned connection mode of the surgical knife body realizes the circumferential spacing of the surgical knife body and the connecting piece, and in order to solve the problem of axial positioning of the surgical knife body, the bearing 20 is arranged in the axial direction of the surgical knife body, the inner ring of the bearing 20 is fixedly connected with the surgical knife body, the outer ring of the bearing 20 is fixed on a fixed structure (such as the mounting sleeve 11 described below) in the front cap 14 or in a shell (which is a shell of bone tissue surgery equipment in the following text), namely, the axial direction of the surgical knife body is axially fixed relatively to the connecting piece through the bearing 20, the positioning precision of the bearing 20 is high, and concentricity and coaxiality can.

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

Specifically, the first positioning section 5 of the milling-drilling machine 10 is positioned in the front cap 14 through a first bearing;

the second positioning section 7 of the milling and drilling machine 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 to fix and limit the milling drill 10 in the axial direction, so that the assembly precision is further improved, the coaxiality in the use process can be ensured, and the operation precision is further ensured.

In addition, the bearing for axially positioning the milling and drilling machine 10 may be only provided with 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 provided with a bearing close to the length center of the milling drill 10, so that higher assembly precision can be ensured.

As can be seen from the above embodiment, the utility model can be controlled by one key through the foot switch, and can be operated by one person, thereby having convenient operation and high operation efficiency; in addition, the motor 13 and the handheld shell 15 are convenient to cool, the milling drill 10 at the front end of the handheld shell 15 is convenient to cool, and the operation wound surface is convenient to clean; and adopt motor 13 to arrange in handheld shell 15, form an organic whole structure for overall structure is compact, portable, can realize disinfecting simultaneously moreover and abandon, accomplishes really not having secondary use and cross infection.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A handheld surgical device, comprising:

the motor is electrically connected with the motor driver;

the power line is connected to the power interface of the control box.

2. The hand-held surgical device of claim 1, wherein the peristaltic pump comprises a drive mechanism and a pump head, the drive mechanism being disposed within the control box and electrically connected to the peristaltic pump controller; the pump head is fixed to a side wall outside the control box, and an irrigation tube of the handheld surgical device is used for being connected to the pump head.

3. The handheld surgical device of claim 1, wherein the foot switch is located 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.

4. The handheld surgical device of claim 1, wherein a mounting sleeve is fixed to the motor housing at the output end of the motor, the mounting sleeve extends out of the handheld housing, and the mounting sleeve is hermetically connected with the handheld housing;

5. The hand-held surgical device of claim 4, wherein the milling-drill includes a milling section having a first end formed with a drill bit;

6. The hand-held surgical device according to claim 5, wherein the milling edge is a straight flute edge or a helical edge, and the truncation grooves are distributed helically in the length direction of the milling edge, or are equally spaced in the length direction of the milling edge.

7. The hand-held surgical device according to claim 5, wherein the surface of the truncation slot is an arc-shaped curved surface, and at least two milling edges are arranged on the periphery of the milling section;

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

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

the mounting section is provided with a rotation limiting surface.

8. The handheld surgical device of claim 7, further comprising: a connecting member;

9. The handheld surgical device of claim 8, further comprising a front cap abutting a front end of the handheld housing and a flushing port provided on the front cap, the flushing port communicating with an outlet of the flushing port, and an outlet of the flushing port being inclined toward an axial direction of the handheld housing;

10. The handheld surgical apparatus of claim 9, wherein the first positioning section of the milling-drill is positioned within the front cap by a first bearing;