Handheld surgical equipment

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 communicated with the coolant flow channel; a liquid inlet is located at one end of the handheld shell away from the flushing port, is communicated with the coolant flow channel, a flushing pipe is connected to the liquid inlet, and a power cord is also connected to 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 to cool the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical equipment, and in particular to a handheld surgical equipment. Background Art

[0002] Existing handheld surgical equipment for plastic surgery, orthopedic surgery, drilling, cutting and removing excess bone tissue requires flushing fluid to flush the milling drill and surgical incision during the cutting process.

[0003] However, the peristaltic pump that controls the flow of flushing fluid and the motor that controls the rotation of the milling drill in the current surgical equipment are controlled separately, requiring two people to operate, which is inconvenient and inefficient.

[0004] Moreover, during the disinfection of the handheld part, some motors are disinfected while others are not. In any case, there is a risk of cross infection. Some of these handheld surgical devices do not have a cooling system, while others have an external cooling system that affects the surgery.

[0005] In addition, the existing milling drills used for bone tissue surgery produce large bone chips, which are difficult to discharge. In addition, drilling and cutting require separate tools, resulting in low surgical efficiency. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0008] The purpose of the present invention is to provide a handheld surgical device to solve the technical problems that the peristaltic pump for controlling the flow of flushing fluid and the motor for controlling the rotation of the milling drill in the current surgical device are controlled separately, requiring two people to operate, resulting in inconvenient operation, low efficiency and cooling problems.

[0009] (II) Technical solution

[0010] In order to solve the above technical problems, an embodiment of the present invention provides a handheld surgical device, which includes:

[0011] A handheld portion, the handheld portion comprising a handheld housing, a motor housing being disposed inside the handheld housing, and a motor being fixed inside the motor housing;

[0012] A coolant flow channel is provided between the inner periphery of the handheld housing and the outer periphery of the motor housing;

[0013] a flushing port extending along the inner side of the front end of the handheld housing toward the coolant flow channel and communicating with the coolant flow channel;

[0014] A liquid inlet is located at one end of the handheld housing away from the flushing port and is in communication with the coolant flow channel. A flushing pipe is connected to the liquid inlet, and the flushing pipe is used to be connected to a cooling source. A power cord is also connected to one end of the liquid inlet.

[0015] A control device, comprising a control box and a foot switch, wherein the control box is provided with a motor driver and a peristaltic pump controller, and the foot switch is electrically connected to the motor driver and the peristaltic pump controller respectively;

[0016] A peristaltic pump, installed in the control box, for providing power to the flushing tube;

[0017] The motor is electrically connected to the motor driver;

[0018] The peristaltic pump is electrically connected to the peristaltic pump controller;

[0019] The power cord is connected to the power interface of the control box.

[0020] In a specific embodiment, the peristaltic pump includes a driving mechanism and a pump head, wherein the driving mechanism is disposed in the control box and is electrically connected to the peristaltic pump controller; the pump head is fixed to the side wall outside the control box, and the flushing tube of the handheld surgical device is used to connect to the pump head.

[0021] In a specific embodiment, the foot switch is arranged on the ground; the foot switch includes a base and a foot button arranged on the base, and the foot button is connected to two connecting wires, one of which is connected to the motor driver, and the other is connected to the peristaltic pump controller.

[0022] In a specific embodiment, 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 sealed and connected to the handheld housing;

[0023] The output end of the motor is connected to a milling drill, and the axial direction of the mounting sleeve is provided with a through hole for the milling drill to pass through;

[0024] The flushing port extends along the sealed connection between the handheld housing and the mounting sleeve and is in communication with the coolant flow channel.

[0025] In a specific embodiment, the milling drill comprises a milling section, and a drill bit is formed at a first end of the milling section;

[0026] The milling section is provided with a plurality of milling blades, and a plurality of truncation grooves are arranged at intervals in the extending direction of the milling blades.

[0027] In a specific embodiment, the milling blade is a straight groove blade or a spiral blade, and the truncation grooves are distributed in a spiral shape in the length direction of the milling blade, or the truncation grooves are distributed at equal intervals in the length direction of the milling blade.

[0028] In a specific embodiment, the surface of the truncation groove is an arc-shaped curved surface, and at least two milling blades are provided in the circumference of the milling section;

[0029] It also includes a tapered section, the tapered section is coaxial with the milling section, and the small end of the tapered section is connected to the second end of the milling section;

[0030] It also includes a first positioning section, a limiting connection section, a second positioning section and a mounting section connected in sequence, wherein the large end of the tapered section is connected to the first positioning section;

[0031] The installation section is provided with a rotation limiting surface.

[0032] In a specific embodiment, it further includes: a connecting member;

[0033] The first end of the connecting member and the mounting section are provided with an assembly gap in the axial direction and are circumferentially limited, and the second end of the connecting member is fixedly connected to the output end of the motor;

[0034] The fixed sleeve on the milling drill is provided with a bearing, and the milling drill is relatively fixed axially to the connecting piece through the bearing;

[0035] The connecting member is provided with a positioning surface matching the rotation limiting surface;

[0036] At least two rotation limiting surfaces are provided, and the rotation limiting surfaces are symmetrical along the axial direction of the milling drill.

[0037] In a specific embodiment, it also includes a front cap docked with the front end of the handheld housing and a flushing hole provided on the front cap, wherein the flushing hole is connected to the outlet of the flushing port, and the outlet of the flushing hole is inclined toward the axial direction of the handheld housing;

[0038] The handheld housing is provided with a hand-grip rubber layer at the mounting sleeve.

[0039] In a specific embodiment, the first positioning section of the milling drill is positioned in the front cap via a first bearing;

[0040] 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.

[0041] (III) Beneficial effects

[0042] Compared with the prior art, the present invention has the following advantages:

[0043] A handheld surgical device provided by an embodiment of the present invention adopts a control box provided with a motor driver and a peristaltic pump controller; the motor driver is used to be electrically connected to the motor in the handheld surgical device; the peristaltic pump controller is used to be electrically connected to the peristaltic pump, and the peristaltic pump is used to provide power for the flushing tube of the handheld surgical device; a foot switch is electrically connected to the motor driver and the peristaltic pump controller respectively. The peristaltic pump and the motor can be controlled simultaneously by stepping on the foot switch, which is convenient to operate and highly efficient, and can be completed by one person.

[0044] A handheld surgical device provided in an embodiment of the present invention includes a handheld portion, wherein the handheld portion includes a handheld shell, wherein a motor shell is provided inside the handheld shell, and a motor is fixed inside the motor shell, so as to facilitate miniaturization of the motor and form an integrated structure with the motor shell, so that the overall structure is compact and portable, and can be disinfected and discarded at the same time, thereby achieving true no secondary use and cross infection.

[0045] Moreover, a coolant flow channel is arranged between the inner periphery of the handheld housing and the outer periphery of the motor housing, so as to facilitate cooling of the motor and the handheld housing, as well as cooling of the milling drill at the front end of the handheld housing and cleaning of the surgical wound.

[0046] In addition, a drill bit is formed at the first end of the milling section of the milling drill, and the milling section and the drill bit are integrated into one, having both drilling and milling functions, thereby simplifying surgical tools and making the operation more flexible and convenient; and, a plurality of cut-off grooves are provided in the extension direction of the milling blade of the milling section, and the cut-off grooves can separate the bone chips milled into small-volume bone chips, thereby facilitating the discharge of the bone chips.

[0047] In addition, the milling drill is connected to the output end of the motor through a connecting piece. An assembly gap and circumferential limit are set in the axial direction of the milling drill and the connecting piece to ensure that the milling drill can rotate synchronously with the connecting piece, solve the problem of slipping and idling, reduce power output loss, and simplify the assembly structure and assembly process; and the axial direction of the milling drill is limited by a bearing to prevent the milling drill from falling, which helps to maintain high-precision concentricity and coaxiality between the milling drill and the output end of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of the connection relationship of a control device in a handheld surgical device according to an embodiment of the present invention;

[0049] Figure 2 An axial cross-sectional view of a handheld surgical device according to an embodiment of the present invention;

[0050] Figure 3 A schematic structural diagram of an embodiment of a milling drill according to the present invention;

[0051] Figure 4 For the milling drill of the present invention Figure 3A schematic side view of another angle of the illustrated embodiment;

[0052] Figure 5 For the milling drill of the present invention Figure 3 A three-dimensional schematic diagram of a milling section of the illustrated embodiment;

[0053] Figure 6 For the milling drill of the present invention Figure 3 a bottom view of the illustrated embodiment;

[0054] In the figure: 1: drill bit; 2: milling section; 3: truncation groove; 4: tapered section; 5: first positioning section; 6: limit connection section; 7: second positioning section; 8: mounting section; 9: rotation limit surface; 10: milling drill; 11: mounting sleeve; 12: milling blade; 13, motor; 14, front cap; 15: handheld housing; 16: motor housing; 17: flushing port; 18: flushing hole; 19: sealing ring; 20: bearing; 21: liquid inlet; 22: flushing pipe; 23: power cord; 24: coolant flow channel. DETAILED DESCRIPTION

[0055] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0056] 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", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Furthermore, in the description of the present invention, unless otherwise specified, “plurality”, “multiple roots”, and “multiple groups” mean two or more.

[0059] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a handheld surgical device, which includes:

[0060] A handheld portion, the handheld portion comprises a handheld housing 15, a motor housing 16 is disposed in the handheld housing 15, and a motor 13 is fixed in the motor housing 16;

[0061] The cooling liquid flow channel 24 is provided between the inner periphery of the handheld housing 15 and the outer periphery of the motor housing 16;

[0062] A flushing port 17 extends along the inner side of the front end of the handheld housing 15 toward the coolant flow channel 24 and communicates with the coolant flow channel 24;

[0063] A liquid inlet 21 is located at one end of the handheld housing 15 away from the flushing port 17 and is in communication with the coolant flow channel 24. A flushing pipe 22 is connected to the liquid inlet 21. The flushing pipe 22 is used to be connected to a cooling source. A power cord 23 is also connected to one end of the liquid inlet 21.

[0064] A control device, comprising a control box and a foot switch, wherein the control box is provided with a motor driver and a peristaltic pump controller, and the foot switch is electrically connected to the motor driver and the peristaltic pump controller respectively;

[0065] A peristaltic pump, installed in the control box, for providing power to the flushing tube 22;

[0066] The motor 13 is electrically connected to the motor driver;

[0067] The peristaltic pump is electrically connected to the peristaltic pump controller;

[0068] The power line 23 is connected to the power interface of the control box to supply power to the motor 13 .

[0069] The peristaltic pump and the motor 13 can be controlled to start at the same time by stepping on the foot switch. When the operation is finished, the foot switch can be released. One person can complete the operation, which is convenient and efficient.

[0070] Moreover, when the handheld surgical device is working, the coolant enters the coolant flow channel 24 from the liquid inlet 21, surrounds the outer periphery of the motor housing 16 to cool the working motor 13, and prevents the motor 13 from burning out under continuous high temperature conditions. It can also reduce the temperature of the handheld housing 15, making it easier for medical staff to hold the device. The coolant flowing through the motor housing 16 is sprayed out from the flushing port 17, and can be used to cool the milling drill 10 at the front end of the handheld housing 15 and clean the surgical wound. The structure is simple and the operation is convenient.

[0071] In addition, by providing a cooling system between the handheld housing 15 and the motor housing 16, on the one hand, it is convenient to cool the motor 13 and the handheld housing 15, as well as to cool the milling drill 10 at the front end of the handheld housing 15 and clean the surgical wound; on the other hand, the present embodiment adopts the motor 13 to be placed in the handheld housing 15, which is convenient for the miniaturization of the motor 13, and the motor 13 and the motor 13 housing form an integrated structure, so that the overall structure is compact and portable, and can be disinfected and discarded at the same time, so as to achieve true no secondary use and cross infection.

[0072] It should be noted that the “front end” of the handheld housing 15 refers to the surgical operation end of the handheld housing 15, i.e. Figure 2 Of course, it can be understood that the "rear end" of the handheld housing 15 refers to the end of the handheld housing 15 away from the surgical operation end, that is, Figure 2 right end shown in .

[0073] It should be noted that the motor driver and the peristaltic pump controller are both existing structures.

[0074] In addition, peristaltic pumps are specifically composed of three parts: a drive mechanism such as a drive motor or motor, a pump head and a hose. A peristaltic pump is like squeezing a hose full of fluid with your fingers, and the fluid in the tube moves forward as your fingers slide forward. The peristaltic pump is based on the same principle, except that the fingers are replaced by rollers. The fluid is pumped by alternately squeezing and releasing the pump's elastic delivery hose. Just like squeezing a hose with two fingers, as the fingers move, negative pressure is formed in the tube, and the liquid flows.

[0075] In a specific embodiment, the driving mechanism is arranged in the control box to protect the driving mechanism, and the driving mechanism is electrically connected to the peristaltic pump controller; the pump head is fixed to the side wall outside the control box, and the flushing tube 22 of the handheld surgical device is used to be connected to the pump head, so as to facilitate the connection between the flushing tube 22 of the handheld surgical device and the pump head, specifically to facilitate the connection between the flushing tube 22 and the hose in the pump head.

[0076] In a specific embodiment, the foot switch is arranged on the ground to facilitate foot control by the surgical operator; the foot switch includes a base and a foot button arranged on the base, and the foot button is connected to two connecting wires, one connecting wire is connected to the motor driver, and the other connecting wire is connected to the peristaltic pump controller. By fixing the base to the ground, the motor 13 and the peristaltic pump can be controlled simultaneously by pressing the foot button.

[0077] The cooling liquid flow channel 24 may have a variety of specific forms: for example, in a specific embodiment, a sandwich is formed between the inner periphery of the handheld housing 15 and the outer periphery of the motor housing 16, and the outer diameter of the motor housing 16 is set to be smaller than the inner diameter of the handheld housing 15, so as to form an annular gap between the motor housing 16 and the handheld housing 15, and the annular gap serves as the sandwich to constitute the cooling liquid flow channel 24. Therefore, the cooling liquid can flow through the sandwich, surround the outer periphery of the motor housing 16, cool the motor housing 16, and then cool the motor 13 in the motor housing 16 to prevent the motor 13 from overheating, and also cool the handheld housing 15 to prevent it from being scalded.

[0078] It should be noted that, in the present invention, the cooling liquid can be liquids such as physiological saline, sterilizing water, disinfectant, etc. Of course, these liquids used need to be harmless to the human body to avoid affecting the surgical wound.

[0079] In a specific embodiment, grooves are formed on the inner periphery of the handheld housing 15 and / or the outer periphery of the motor housing 16, and the grooves constitute the coolant flow channel 24 between the inner periphery of the handheld housing 15 and the outer periphery of the motor housing 16. In other words, grooves can be formed on the inner periphery of the handheld housing 15 alone, on the outer periphery of the motor housing 16 alone, or on both the inner periphery of the handheld housing 15 and the outer periphery of the motor housing 16; the grooves are used for the circulation of coolant.

[0080] Specifically, the groove may be in the form of a groove, or may be formed as a space between two adjacent dividing strips. The specific form is not limited as long as it can guide the flow of the coolant.

[0081] In a specific embodiment, the groove extends in a spiral shape from one end of the handheld housing 15 to the other end along the inner circumference of the handheld housing 15;

[0082] And / or, the groove extends in a spiral shape from one end of the motor housing 16 to the other end along the outer circumference of the motor housing 16. Setting the groove in a spiral shape can guide the coolant to flow in a spiral shape to the entire outer circumference of the motor housing 16, and can also cool the motor housing 16, and then cool the motor 13 in the motor housing 16 to prevent the motor 13 from overheating, and also cool the handheld housing 15 to prevent it from getting hot.

[0083] In another specific embodiment, the inner circumference of the handheld housing 15 is provided with a plurality of grooves extending along its axial direction at intervals, and the plurality of grooves and the outer circumference of the motor housing 16 form the coolant flow channel 24;

[0084] And / or, the outer periphery of the motor housing 16 is provided with a plurality of grooves extending along the axial direction thereof, and the plurality of grooves and the inner periphery of the handheld housing 15 form the coolant flow channel 24. Thus, the coolant flows along the grooves from one end of the outer periphery of the motor housing 16 to the other end, and / or, the coolant flows along the grooves from one end of the inner periphery of the handheld housing 15 to the other end, which can also cool the motor housing 16, and then cool the motor 13 in the motor housing 16 to prevent the motor 13 from overheating, and also cool the handheld housing 15 to prevent it from being scalded.

[0085] In addition, the grooves may be in the shape of long strips, waves, etc., and the specific shape is not limited.

[0086] In a specific embodiment, the flushing port 17 is a long hole, which 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; ensuring that the coolant sprayed from the flushing port 17 has a certain pressure to facilitate flushing of the wound.

[0087] like Figure 2 As shown, in a specific embodiment, it also includes a front cap 14 docked with the front end of the handheld shell 15 and a flushing hole 18 provided on the front cap 14, and a sealing ring 19 is provided at the docking point to ensure the sealing effect, the flushing hole 18 is connected with the outlet of the flushing port 17, the aperture of the flushing hole 18 can match the flushing port 17, and the outlet of the flushing hole 18 is inclined toward the axial direction of the handheld shell 15, so that the coolant sprayed from the flushing hole 18 can be directly flushed to the milling drill 10 extending from the front cap 14 at a close distance, which will not affect the normal progress of the operation, but also clean the wound during the operation to avoid infection.

[0088] A specific embodiment, such as Figure 2 As shown, the motor housing 16 is located at the output end of the motor 13 and is fixed with a mounting sleeve 11, the mounting sleeve 11 extends out of the handheld housing 15, and in order to ensure that the mounting sleeve 11 is firmly connected to the handheld housing 15, the mounting sleeve 11 and the handheld housing 15 are interference-fitted, thereby forming a sealed connection between the mounting sleeve 11 and the handheld housing 15, that is, the coolant does not directly pass through the outer periphery of the mounting sleeve 11;

[0089] The output end of the motor 13 is connected to a milling drill 10, which is driven by the motor 13 to rotate so as to cut or grind the surgical site. The axial direction of the mounting sleeve 11 is provided with a through hole for the milling drill 10 to pass through, and in order to ensure the smooth rotation of the milling drill 10, a bearing 20 is provided on the outer fixed sleeve of the milling drill 10, and the outer ring of the bearing 20 is fixed to the inner circumference of the mounting sleeve 11;

[0090] The flushing port 17 extends along the sealed connection between the handheld housing 15 and the mounting sleeve 11 and is connected to the coolant flow channel 24, so that the coolant passing through the coolant flow channel 24 is only sprayed out from the flushing port 17, ensuring that the injection pressure can meet the surgical requirements. In addition, the flushing port 17 is located above the mounting sleeve 11, which does not affect the normal progress of the operation and is also convenient for directly flushing the milling cutter.

[0091] In a specific embodiment, the handheld housing 15 is provided with a hand-grip rubber layer at the mounting sleeve 11 , and the hand-grip rubber layer may be made of a rubber pad, which not only increases the hand feel but also prevents slipping during surgery.

[0092] In one embodiment of the present invention, a milling drill 10 includes a milling section 2, a 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 one, so that the milling drill 10 has the functions of drilling and milling at the same time, which is more efficient, and also makes the surgical operation easier and more flexible, simplifies the surgical tools, and reduces the cost of surgical tools.

[0093] In addition, the milling section 2 is provided with a plurality of milling blades 12, and a plurality of truncation grooves 3 are arranged at intervals in the extension direction of the milling blades 12. The truncation grooves 3 are used to cut the bone chips milled in the extension direction of the milling blades 12 into a plurality of small-volume bone chips, thereby reducing the volume of the bone chips and facilitating the discharge of the bone chips.

[0094] This technical solution has both drilling and milling functions, simplifies surgical tools, makes the operation more flexible and convenient, and can reduce the volume of milled bone chips, which helps to discharge the bone chips.

[0095] Preferably, the milling blade 12 is a straight groove blade or a spiral blade. The straight groove blade is easy to process; the spiral blade has high milling efficiency and helps to discharge bone chips. Figure 2-6 The milling cutting edge 12 shown is a straight fluted cutting edge.

[0096] Further, such as Figure 3-5 As shown, a plurality of truncated grooves 3 are spirally distributed in the length direction of the milling blade 12, which is easy to process and has high structural strength. The spiral shape formed by the truncated grooves 3 can be an equidistant spiral or a variable-pitch spiral.

[0097] The truncated grooves 3 are distributed in a spiral shape on the straight groove blade, such as Figure 2-6 When the milling blade 12 is a spiral blade (not shown in the figure), the truncation groove 3 can be distributed along the spiral direction of the spiral blade, and can also form an alternating spiral distribution with the spiral direction of the spiral blade.

[0098] Alternatively, the cutting groove 3 is connected in a spiral shape at the milling section 2 to form an integral groove body, which can also play the function of cutting bone chips.

[0099] In addition, the truncation groove 3 is not limited to being distributed in a spiral shape along the milling blade 12, but can also be distributed in multiple layers in an annular shape along the length direction of the milling blade 12; for example, the truncation groove 3 forms a plurality of integral annular grooves in the length direction of the milling blade 12, or each annularly distributed layer is provided with a plurality of truncation grooves 3.

[0100] Furthermore, the truncation grooves 3 are evenly spaced in the length direction of the milling blade 12, and the distribution is uniform, so as to improve the uniformity of the volume of the milled bone chips. For example, the truncation grooves 3 are evenly spaced in the above-mentioned spiral shape, or evenly spaced in the shape of a ring or a straight line. For example, Figure 2-6 As shown, each milling blade 12 has a plurality of truncation grooves 3 distributed at equal intervals in the length direction, forming a multi-truncation milling blade 12 .

[0101] Furthermore, the surface of the truncation groove 3 is an arc-shaped surface, and the arc-shaped truncation groove 3 makes the milling blade 12 form an arc-shaped section to facilitate the truncation of the bone chip milling process. In addition, the truncation groove 3 can be formed by cutting with a cylindrical cutter head. The overall processing is simple and the arc-shaped transition is conducive to bone chip cutting.

[0102] The surface shape of the truncation groove 3 is not limited to an arcuate curved surface, but may also be a rectangular or other prismatic curved surface.

[0103] Combination Figure 2-6 As shown, in one embodiment, at least two milling blades 12 are provided in the circumference of the milling section 2, and the milling efficiency is improved by increasing the number of milling blades 12. Preferably, three milling blades 12 are provided in the circumference of the milling section 2, and the milling blades 12 have stable structural strength and are convenient for bone chip discharge.

[0104] Combination Figure 3-5 As shown, in another embodiment, the milling drill 10 also includes a tapered section 4, which 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, that is, the radial dimension of the tapered section 4 decreases toward the direction close to the milling section 2, which meets the requirement of a small diameter of the milling section 2 and can ensure the overall structural strength. Among them, the diameter of the milling section 2 can be reduced to 1.9mm, and the size of the tapered section 4 is increased to 30-50mm. Under the premise of ensuring the structural strength, the overall length of the milling drill 10 is increased, which is helpful for surgical operations.

[0105] Combination Figure 3-6 As shown, 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 connected in sequence and integrally formed, the first positioning section 5 is connected to the large end of the tapered section 4, and a retaining 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 less than HRC50.

[0106] It should be noted that the above-mentioned drill bit 1, milling section 2, conical section 4, first positioning section 5, limiting connection section 6, second positioning section 7 and installation section 8 are arranged axially in sequence and formed as one piece, and the first positioning section 5, limiting connection section 6 and second positioning section 7 are all cylindrical shaft sections.

[0107] Furthermore, 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 for easy installation. Specifically, a connecting sleeve is connected to the output shaft of the motor 13, and the hole structure in the connecting sleeve matches the mounting section 8. An assembly gap is provided between the mounting section 8 and the connecting sleeve so that the mounting section 8 can be flexibly plugged in and out relative to the connecting sleeve during the assembly process. During the assembly process of the milling drill 10 and the motor 13, the connecting sleeve limits the rotation of the mounting section 8 to facilitate synchronous rotation; and the mounting section 8 can be plugged in and out relative to the output shaft of the motor 13, and can be easily inserted and pulled out during installation, so as to be assembled with other components, such as the bearing 20, to simplify the assembly process, ensure assembly accuracy, eliminate the risk of slipping and idling, and reduce power output loss.

[0108] The rotation limiting surface 9 is formed by providing a plane along the axial direction of the column to form the rotation limiting surface 9. The rotation limiting surface 9 on the mounting section 8 may be one or more, preferably two, to form a symmetrical structure to ensure the strength and stability of the mounting section 8. The cross section of the mounting section 8 may also be a rectangle, a regular hexagon, or other regular polygonal shapes to meet the rotation limiting function.

[0109] In another embodiment, the output shaft of the motor 13 is fixedly connected to the connecting sleeve, that is, the mounting section 8 is connected to the connecting sleeve of the output shaft of the motor 13 .

[0110] Specifically, the first positioning section 5 is axially fixed in the front cap 14 through the bearing 20, and the second positioning section 7 is axially fixed in the mounting sleeve 11 through the bearing 20. The bearing 20 has good support stability, so that the radial runout of the milling drill 10 is not greater than 0.08mm, the axial movement is not greater than 0.5mm, and the milling drill 10 is not easy to slip. The drill bit 1, the milling section 2 and the tapered section 4 extend out of the mounting sleeve 11, the first positioning section 5 is placed in the front cap 14, and the limiting connection section 6, the second positioning section 7 and the mounting section 8 are placed in the mounting sleeve 11.

[0111] Specifically, the milling drill 10 is connected to the output shaft of the motor 13 through a connecting piece, and the motor 13 rotates the milling drill 10, and the milling drill 10 performs drilling or cutting of bone tissue during the rotation movement. Among them, the connecting piece is fixedly connected to the output end of the motor 13, and the milling drill 10 rotates synchronously with the connecting piece.

[0112] Furthermore, a mounting section 8 is provided at the end of the milling drill 10, and the mounting section 8 is used for assembly with the connecting piece. The first end of the connecting piece is axially slidably connected to the mounting section 8, and the first end of the connecting piece is circumferentially limited to the mounting section 8. Among them, the mounting section 8 can slide axially relative to the connecting piece, and is not fixedly connected to the connecting piece, which can ensure that the scalpel body and the connecting piece rotate synchronously, solve the problem of slipping and idling, and reduce power output loss, and simplify the installation method of the scalpel body and the connecting piece, and reduce the assembly accuracy requirements between the mounting section 8 and the connecting piece.

[0113] The above-mentioned connection method of the scalpel body realizes the circumferential limitation 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 to the scalpel body, and the outer ring of the bearing 20 is fixed to the fixed structure (such as the mounting sleeve 11 described below) in the front cap 14 or the outer shell (the outer shell of the bone tissue surgical device below), that is, the axial direction of the scalpel body is relatively fixed to the axial direction of the connecting piece through the bearing 20, the positioning accuracy of the bearing 20 is high, and the concentricity and coaxiality can be guaranteed.

[0114] Through the cooperation between the connecting piece and the bearing 20, the circumferential and axial limitation of the surgical blade body is achieved, ensuring that the surgical blade body can rotate synchronously with the connecting piece, and then the surgical blade body and the output end of the driving device rotate synchronously.

[0115] Specifically, the first positioning section 5 of the milling drill 10 is positioned in the front cap 14 through a first bearing;

[0116] 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 .

[0117] The first bearing and the second bearing cooperate with the milling drill 10 to fix and limit the milling drill 10 in the axial direction, further improving the assembly accuracy, and also ensuring the coaxiality during use, thereby ensuring the accuracy of the surgical operation.

[0118] In addition, the bearing used for axial positioning of the milling drill 10 can also be provided with only the first bearing or the second bearing, which can be selected according to actual needs. Alternatively, the first positioning section 5 or the second positioning section 7 can also be provided with a bearing close to the length center of the milling drill 10, which can ensure a higher assembly accuracy.

[0119] It can be seen from the above embodiments that the present invention can be controlled by one-touch control through a foot switch, and one person can complete the operation, which is convenient and efficient. In addition, it is convenient to cool the motor 13 and the handheld housing 15, as well as to cool the milling drill 10 at the front end of the handheld housing 15 and clean the surgical wound. Moreover, the motor 13 is placed in the handheld housing 15 to form an integrated structure, so that the overall structure is compact and portable, and can be disinfected and discarded at the same time, so as to achieve true no secondary use and cross infection.

[0120] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, 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, characterized in that: include: A handheld portion, the handheld portion comprising a handheld housing, a motor housing being disposed inside the handheld housing, and a motor being fixed inside the motor housing; A coolant flow channel is provided between the inner periphery of the handheld housing and the outer periphery of the motor housing; a flushing port extending along the inner side of the front end of the handheld housing toward the coolant flow channel and communicating with the coolant flow channel; A liquid inlet is located at one end of the handheld housing away from the flushing port and is in communication with the coolant flow channel. A flushing pipe is connected to the liquid inlet, and the flushing pipe is used to be connected to a cooling source. A power cord is also connected to one end of the liquid inlet. A control device, comprising a control box and a foot switch, wherein the control box is provided with a motor driver and a peristaltic pump controller, and the foot switch is electrically connected to the motor driver and the peristaltic pump controller respectively; A peristaltic pump, installed in the control box, for providing power to the flushing tube; The motor is electrically connected to the motor driver; The peristaltic pump is electrically connected to the peristaltic pump controller; The power cord is connected to the 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 to the peristaltic pump controller; the pump head is fixed to the side wall outside the control box, and the flushing tube of the handheld surgical device is used to be connected to the pump head; 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.

2. The handheld surgical device according to claim 1, characterized in that: The motor housing is located at the output end of the motor and a mounting sleeve is fixed thereto, the mounting sleeve extends out of the handheld housing, and the mounting sleeve is sealedly connected to the handheld housing; The output end of the motor is connected to a milling drill, and the axial direction of the mounting sleeve is provided with a through hole for the milling drill to pass through; The flushing port extends along the sealed connection between the handheld housing and the mounting sleeve and is in communication with the coolant flow channel.

3. The handheld surgical device according to claim 2, characterized in that: The milling drill comprises a milling section, a first end of which is formed with a drill bit; The milling section is provided with a plurality of milling blades, and a plurality of truncation grooves are arranged at intervals in the extending direction of the milling blades.

4. The handheld surgical device according to claim 3, characterized in that: The milling blade is a straight groove blade or a spiral blade, and the truncation grooves are distributed in a spiral shape in the length direction of the milling blade, or the truncation grooves are distributed at equal intervals in the length direction of the milling blade.

5. The handheld surgical device according to claim 3, characterized in that: The surface of the truncation groove is an arc-shaped curved surface, and at least two milling blades are arranged in the circumference of the milling section; The handheld surgical device further comprises a tapered section, the tapered section being coaxial with the milling section, and the small end of the tapered section being connected to the second end of the milling section; The handheld surgical device further comprises a first positioning section, a position limiting connection section, a second positioning section and a mounting section which are connected in sequence, and the large end of the tapered section is connected to the first positioning section; The installation section is provided with a rotation limiting surface.

6. The handheld surgical device according to claim 5, characterized in that: Also includes: Connectors; The first end of the connecting member and the mounting section are provided with an assembly gap in the axial direction and are circumferentially limited, and the second end of the connecting member is fixedly connected to the output end of the motor; The fixed sleeve on the milling drill is provided with a bearing, and the milling drill is relatively fixed axially to the connecting piece through the bearing; The connecting member is provided with a positioning surface matching the rotation limiting surface; At least two rotation limiting surfaces are provided, and the rotation limiting surfaces are symmetrical along the axial direction of the milling drill.

7. The handheld surgical device according to claim 6, characterized in that: It also includes a front cap docked with the front end of the handheld housing and a flushing hole provided on the front cap, wherein the flushing hole is connected with the outlet of the flushing port, and the outlet of the flushing hole is inclined toward the axial direction of the handheld housing; The handheld housing is provided with a hand-grip rubber layer at the mounting sleeve.

8. The handheld surgical device according to claim 7, characterized in that: 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.

Images