KR100589118B1 - Medical handpiece with suction connector and saline supply connector coaxially - Google Patents

Abstract

The present invention is to provide a medical handpiece used to remove facial contour correction, bone tumors, protrusions, drive means 23 for generating a driving force to the outside of the handpiece 20, and interlocked with the drive means 23 Located inside the handpiece mechanism for converting the rotational movement to a linear reciprocating motion-power transmission shaft (19), inclined ball joint (13), crank shaft (12), crank mount (11)-and, Accessory connection adapter (10) is connected to the straight reciprocating movement of the mechanism portion to the surgical line or saw, and bone fragments discharge passage connected to the suction connector (1) by suction in the adapter (10) during bone cutting ( 4) and a saline supply connection pipe (2) coaxially connected with the suction connector (1) to prevent heat generation of the string and saw during bone cutting, and saline solution to be performed in the state that saline is supplied Supply passage (3), Including a valve (5) for controlling the saline supply to the saline supply connection pipe (2), the suction connector and the saline supply connection on the coaxial, characterized in that the continuous bone cutting can be made through a minimal incision A medical handpiece having a tube.

Handpiece, saline solution supply, suction, bone cutting                  

Description

Medical handpiece equipped with couplings for suction and saline solution}

1 is a block diagram of a medical handpiece according to the present invention

Figure 2a is a view showing the combination of the accessory connection adapter and accessories

Figure 2b combination of accessory locknut, accessory, accessory connection adapter

3A is a structure diagram of the coupling portion of the protector

Figure 3b shows the protector connecting projection of the handpiece

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4A is an assembly diagram of a silicone connector, a suction connector, a saline supply connector, a valve, and a valve mount constituting the valve part

4b and 4c show the locked and open states of the valves controlling the saline feed, respectively.

5A and 5B coupling diagrams of power transmission shafts and power transmission joints

Figure 6a and 6b is a view showing the coupling and linear reciprocating motion of the crankshaft, inclined ball joint, power transmission shaft case, power transmission shaft

6c is a view showing a shape in which the crankshaft and the crank mount are combined;

Fig. 7A Assembly view of the inclined shaft, thrust bearing, inclined ball joint, radial bearing, and flange bearing constituting the inclined ball joint portion

Fig. 7B Assembly view of the power transmission shaft, thrust bearing, radial bearing, spacer, power transmission shaft case constituting the power transmission shaft portion.

 * Explanation of Major Codes

1. Suction connector 2. Saline supply connector 3. Saline supply passage

4. Bone piece discharge passage 5. Valve 6. Silicone connector 7. Handpiece connection protrusion

8. Rubber corrugated pipe 9a. Teflon side hole 9b. Valve mount side hole

10. Accessory connection adapter 11. Crankmount 12. Crankshaft

13. Inclined ball joint 14. Thrust bearing 15. Power transmission joint

16a, 16b, 16c. Radial Bearings 17. Linear Bearings

18. Power transmission shaft case 19. Power transmission shaft 20. Handpiece

21. Protector 22. Flexible cable 23. Driving means 24. Bearing shaft

25. Shaft lock nut 26. Teflon ring 27. Valve mount 28. Washer

29. Accessory (string, saw) 30. Accessory connection 31. Accessory connection adapter projection

32.Silicone connector adapter 33.Accessory lock nut 34.Spacer

35. Flange Bearing 36. Inclined Shaft 37. Ball

The present invention relates to a medical handpiece used to remove facial contouring, bone tumors, and protrusions, and more specifically, is combined with a surgical string or a saw for cutting bones, and a linear reciprocation of the rotational movement of the motor inside the body. A medical handpiece provided coaxially with a mechanism part for converting motion and a suction connector and a saline supply connector for sucking bone fragments generated during bone cutting.

Conventional methods used for conventional contour correction include a method of cutting bone using a bone cutting saw and a method of grinding bone using a string. An important consideration in facial contour surgery is that a large amount of bone must be ground continuously in a short time to minimize incisions, bleeding, swelling and nerve damage, and muscles and periosteal masses must be discharged along with the bone. In the case of using a manual saw or string, the cutting amount is large, but the speed is slow, which increases the doctor's fatigue and reduces the concentration of the surgery. When using electric or pneumatic handpieces, the cutting speed is high, but the friction heat from cutting the bone causes the bone pieces to press-solidify on the saw or string. In this case, it is difficult to cut a large amount of bone continuously because the bone fragments are rubbed on the bone while being stuck on the cutting edge, and there is an inconvenience of cleaning the blade once every few seconds. In addition, there is a risk that burns or deformation of the soft tissues around the incision are caused by heat from the cutting surface. In order to improve this, the existing handpiece used a method of supplying saline through the inside of the rod (rod of rasp) for bone cutting, and suctioning the bone fragments cut with saline from the outside of the row. However, since the method of suctioning in an open space is more difficult to suck the bone fragments pressed on the cutting edge than the method of sucking the bone fragments cut into a narrow space inside the string under the same sound pressure, the suction efficiency is also lowered. .

The present invention is used for the purpose of cutting the contour and bone cutting, such as mandibular reduction or cheekbone reduction by combining a handpiece including a saline supply connector and suction connector coaxially with accessories such as a surgical saw or string . Inserted into a handpiece that gives a straight reciprocating motion, an accessory such as a surgical band or a saw with an internal hollow that is small to cut or cut bone tissue by inserting it into a smaller incision hole than a conventional surgery. A protector may be additionally coupled to the accessory, and the protector serves to supply saline while securing a movement space of the accessory and preventing damage to soft tissues around the incision. The handpiece has a coarse bone discharge passage and a saline supply passage on the coaxial shaft, and supplies a saline solution through a saline supply passage connected to an external saline unit to prevent the exothermic action of the accessory during bone cutting. Do not allow this coagulation crimp. The cut bone powder is sucked into the accessory stand and discharged to the external suction unit through the bone fragment discharge passage, thereby allowing continuous cutting through a minimal incision in a short time.

The present invention is a handpiece configured to be used in conjunction with accessories such as strings and saws to perform bone cutting or bone cutting.
The handpiece is an element for converting the rotational motion of the motor into a linear reciprocating motion to impart motion to a string or a saw element which is an acting portion, and has a mechanism of a suitable structure for converting the rotational motion into a linear motion therein. The internal structure is protected by a suitably shaped case that can be held and handled by hand. Especially, in response to the accessories such as saws and strings connected to the accessory connection part, the saline solution and the inhalation of the saline solution are prevented at the same time as the bone cutting or cutting. Has a structure that can be made.
The accessory is connected to the accessory connection part of the handpiece, and the bone is cut or cut according to the linear reciprocating motion of the mechanism. A saw or string-shaped cutting surface is formed at the end of the elongated rod. It is formed to have a structure capable of properly inhaling and discharging foreign matter in the working portion.
The protector is a pipe structure that is coupled to the handpiece to prevent the non-active part of the accessory from contacting the skin to cause thermal injury, and forms a space between the rod or the rod of the saw, which constitutes the accessory, to form a saline solution through the space. It has a structure that enables supply of.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
1 shows a handpiece according to the present invention, wherein a motor is installed in the external driving means 23 and power is supplied to the handpiece 20 through the flexible cable 22. The inside of the handpiece is a mechanism part for converting the rotational movement of the motor into a linear reciprocating movement based on the rubber pleated pipe-power transmission shaft (19), inclined ball joint (13), crank shaft (12), crank mount (11)- It is divided into the rear portion and the front portion of the accessory connecting adapter portion 10 is connected to the mechanism portion and transmits the linear reciprocating motion of the mechanism portion to the surgical string or saw. The accessory connection adapter (10) has a bone piece discharge passage (4) is connected to the suction connector (1) by the silicone connection pipe (6) of the elastic material, between the accessory connection adapter 10 and the crank mount (11) A rubber pleated pipe (8) is fitted therein, and a saline supply passage (3), a valve (5) for controlling the saline supply, a suction connection pipe (1), a saline supply connection pipe (2), a protector connecting projection (7), And a power transmission joint 15.

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The internal structure of the handpiece is divided into a mechanism part for converting the rotational movement of the motor into a linear reciprocating motion with a rubber pleated tube 8 therebetween, an accessory connection adapter 10 and a saline supply passage 3. At this time, the rubber pleated pipe (8) has a watertight function to prevent the saline solution supplied to the saline supply passage (3) by the saline supply connecting pipe (2) during the bone cutting to prevent the inflow into the handpiece, and the linear reciprocating motion To cope with the movement. The crankshaft 12 connected to the inclined ball joint 13 moves by about 3 mm in a linear reciprocating motion, and the accessory connecting adapter 10 connected to the crankshaft also moves together, so that the bone piece suction through the bone fragment discharge passage 4 inside the adapter is moved. In order to connect the suction connector (1) and the accessory connection adapter 10 to the silicone connector (6) of the elastic material.

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FIG. 2A is a view showing a shape in which an accessory connecting adapter 10 and an accessory 29 such as a string or a saw are combined. The accessory connecting adapter 10 transmits a straight reciprocating motion received from the crankshaft 12 to the accessory 29. It plays a role. One end of the accessory connection adapter 10 is formed into a male screw shape, and then the accessory 10 is inserted and then fixed with an accessory lock nut 33, and the other end is formed into a female screw shape to be coupled to the male screw of the crankshaft 12. The inside is formed with a hollow for suction serves as the bone fragment discharge passage (4), there is a silicone connector adapter 32 protruding in the middle of the adapter is the silicone connector adapter 32 and the silicone connector (6) is connected to the bone piece suction. The silicone connector 6 is connected to the suction connector 1 at one end thereof and the other end is connected to the silicone connector adapter 32 to flexibly cope with linear reciprocation, while cutting the bone while cutting bone. The excess saline is sucked from the inside of the accessories and serves to send to the suction connector (1).

Figure 2b is a coupling diagram of the accessory lock nut 33, the accessory 29, the accessory connection adapter 10, one end of the accessory connection adapter 10 is formed with a projection 31, accessories such as strings or saws It is coupled to the groove of the connecting portion 30, and fixed on the accessory lock nut 33 thereon. Due to the projection 31, the direction of the blade to the handpiece body when connecting the string is 180 °, the direction of the saw blade is directed to 90 ° when connecting the saw, the doctor is comfortable while ensuring maximum visibility when cutting bone You will be able to operate in posture.

FIG. 3a shows the protector 21 connected to the handpiece, and FIG. 3b shows the connection groove 21a of the protector 21 and the connection protrusion 7 of the handpiece, respectively. When the accessory 29 is connected to the accessory connection adapter 10 inside the handpiece and the protector is coupled to the handpiece, the accessory 29 located inside the protector 21 is soft tissue around the incision during bone cutting. The movement space of the accessory 29 can be secured while preventing the damage. In addition, the saline solution may be supplied to the cutting part by allowing the saline solution to flow into a gap excluding the space occupied by the accessory 29 in the protector 21. A connecting groove 21a is formed at the end of the protector 21, and a protruding end 7 for connection is provided at the front outer wall of the main body of the handpiece 20 in four directions, so that the protector 21 is inserted into the main body at 45 °. By turning, the protector 21 is prevented from coming off the main body when the bone is cut.

Figure 4a shows the organic configuration of the silicone connection pipe 6, the suction connection pipe (1), the saline supply connection pipe (2), the valve (5), the valve mount 27 constituting the valve portion, Figure 4b And 4c show the locked and opened state of the valve 5 which is responsible for the supply and control of the saline solution. The saline solution is supplied or blocked by the valve (5) coupled with the saline supply connecting pipe (2) flows into the saline supply passage (3), and through the protector 21 to the rasp or saw. The saline solution reduces the friction between bones and accessories during bone cutting, resulting in less heat generation, and smoothing of the bone pieces by cutting them into the saline solution. Done. The inside of the valve (5) is a Teflon ring (26) for watertightness with the sliding bearing, and the saline solution is provided on one side of the valve (5) and the side of the Teflon ring (26) to which the saline supply connection pipe (2) is connected. The hole 9a which can flow is penetrated. Two holes 9b in the valve mount 27 are located on the horizontal line. When the valve 5 is turned 90 ° or 270 ° perpendicular to the handpiece 20 so that the holes 9a and 9b are in contact with each other. The teflon side hole 9a and the valve mount side hole 9b are aligned so that the saline solution is supplied to the saline supply passage 3 through the hole, and the valve is turned by 90 ° again so that the holes do not contact each other. ), The saline solution is stopped.

As described above, the accessory connection adapter 10, the saline supply passage 3, the valve 5, and the like at the front of the corrugated pipe 8 have been described.

When external power is supplied to the handpiece 20 through the flexible cable 22, the inclined ball joint 13 and the crankshaft 12 convert the rotational motion of the motor into a linear reciprocating motion, and the crankshaft 12 Four radial bearings (16a) and two linear bearings (17) coupled to the crank mount (11) to hold the crankshaft (12) to smooth the linear reciprocating motion, and reduces heat generation.

5A and 5B illustrate an embodiment in which the power transmission shaft 19 inside the handpiece and the power transmission joint 15 of the flexible cable are coupled to the handpiece 20 and the flexible cable 22. In order to easily connect the power transmission shaft 19 and the power transmission joint 15, the two connecting portions are cut at an appropriate angle to form an inclined surface. In any direction along the inclined surface is engaged with each other so that the parallel surface of the handpiece power transmission shaft 19 is fitted into the groove of the power transmission joint 15 on the cable side.

6A and 6B show a coupling diagram of the crankshaft 12, the inclined ball joint 13, the power transmission shaft case 18, and the power transmission shaft 19 constituting the linear reciprocating motion converting mechanism. Has the following connection structure: The head portion of the power transmission shaft 19 is inclined inclined and the inclined shaft 36 penetrating the inclined ball joint 13 is connected to the inclined surface of the head portion. A protruding ball 37 is formed on the side of the inclined ball joint 13 and a hole is formed in one end of the crankshaft 12. When the ball 37 of the inclined ball joint is inserted into this hole and fixed, The inclined ball joint 13 and the crankshaft 12 are connected.

The inclined ball joint 13 and the crankshaft 12 is connected to the power transmission shaft 19 for the rotational movement to perform a linear reciprocating motion as follows. When the power is supplied, the motor installed in the external drive means 23 rotates and its power is transmitted through the flexible cable 22, so that the power transmission shaft 19 rotates. As shown in FIG. 6B, when the power transmission shaft 19 rotates, the inclined shaft 36 connected to the head rotates in the same direction, and the inclined ball joint 13 moves forward along the inclined surface.

In addition, the crankshaft 12 connected to the ball 37 of the inclined ball joint is partially transferred to the tilting motion of the inclined ball joint 13 and the rotational movement of the inclined shaft 36. As shown in FIG. Four radial bearings 16a and two linear bearings 17 are installed on the crank mount 11 that supports the crank shaft 12 so that the 12 moves only in a linear motion. Allow them to pass through. In this case, when the inclined ball joint 13 is tilted forward, the position of the ball 37 is also moved forward, so that the crank shaft 12 is linearly moved by a distance equal to the width of the tilting motion of the inclined ball joint 13. . The linear bearing 17 is located inside the cylindrical crank mount 11 to secure the linear reciprocating movement path of the crank shaft 12 while holding the force in the right direction of the crank shaft 12, radial bearing (16a) Is located on the outside of the crank mount 11 to prevent the rotation of the crankshaft 12 and the resulting departure to ensure a straight reciprocating motion path to enable a smooth movement, reducing friction to reduce heat generation.

Meanwhile, when the power transmission shaft 19 is rotated again as shown in FIG. 6A, the inclined shaft 36 rotates, the inclined ball joint 13 tilts backward, and the ball 37 returns to its original position. Upon returning, the crankshaft 12 is linearly moved backward so that one straight reciprocating motion is performed.

Fig. 7A is a view showing the assembling diagram of the inclined shaft 36, the thrust bearing 14, the inclined ball joint 13, the radial bearing 16c, and the flange bearing 35 constituting the inclined ball joint. A radial bearing 16c and a flange bearing 35 are installed inside the ball joint 13 to smoothly rotate the inclined shaft 36. In addition, thrust bearings 14 are provided at both ends of the radial bearing 16c and the flange bearing 35, respectively, to distribute the load in the axial direction during the straight reciprocating motion to smoothly transmit power to withstand high speed rotation. do.

FIG. 7B is a view showing the assembly of the power transmission shaft 19, the thrust bearing 14, the radial bearing 16b, the spacer 34, and the power transmission shaft case 18 constituting the power transmission shaft. Spacer 34 is provided inside the cylindrical power transmission shaft case 18 so that two radial bearings 16b for smoothly rotating the power transmission shaft may be provided before and after the spacer 34. Prepare. In addition, the power transmission shaft 19 received the power of the motor rotating at a speed of 12000 ~ 18000rpm has a thrust bearing 14 to withstand the load in the axial direction, reducing friction and wear, for this purpose, the power transmission shaft By counting the inside of the case 19 to provide the thrust bearing 14 installation space is installed so as to be located before and after the radial bearing (16b). The power transmission shaft 19 is coupled to the power transmission shaft case 18 while penetrating the thrust bearing 14 and the radial bearing 16b, and the shaft behind the power transmission shaft case 18 so that the parts are not disassembled. Secure with lock nut (25).

Four thrust bearings 14 installed on the front and rear of the inclined ball joint 13 and the count boring portion of the power transmission shaft case 19 are intended to protrude from the inclined shaft 36 and the power transmission shaft 19 in the axial direction. To hold the force and the pushing force for a continuous and powerful cutting.

In the above, the present invention is limited to the preferred embodiments of the present invention, but the present invention can be variously changed or modified, and the true scope of the present invention will be determined by the technical spirit of the claims.

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In the case of cutting a large amount of bones such as facial contour surgery, the conventional medical handpiece simply provides power to a surgical accessory (string or saw) or a structure to suction the cut bone fragment from the outside of the surgical string, but the present invention By supplying saline from the outside of string or saw accessories, it reduces the friction between bone and accessories when cutting bone, and reduces heat, and cuts the bone pieces so that they do not get caught on saline or saw to smooth the cutting.

In addition, by suctioning through the internal hollow accessories, even if suctioned at the same sound pressure as compared to when suctioned to the outside, the suction efficiency is increased, reducing the operation time and efficient cutting is possible.

Claims (9)

Driving means connected to the handpiece outside the handpiece to generate a driving force; A mechanism unit interlocked with the driving means and provided inside the handpiece for converting a rotational movement into a linear reciprocating movement; An accessory connection adapter connected to the mechanism part and configured to transfer a linear reciprocating motion of the mechanism part to an accessory such as a surgical string or a saw; A cushion connection pipe connected to a hollow bone fragment discharge passage formed at the center of the accessory connection adapter as a bone fragment discharge means for discharging the bone fragment sucked through the accessory to the outside; Suction connector and saline supply connection on the coaxial comprising a; saline supply connecting pipe connected to the saline supply passage provided to the outside of the accessory connection adapter as a means for preventing heat generation in the cutting portion during bone cutting Medical handpiece with a tube. According to claim 1, Mechanism unit is composed of a power transmission shaft, inclined ball joint, crankshaft, crank mount, the power transmission shaft is one side is connected to the external drive means and the other end is inclined, The inclined portion is inclined ball joint bearing bearing the inclined shaft to the axis and formed into a ball protruding on the side to induce the inclined motion in the inclined ball joint in contact with the inclined surface during the rotational movement of the power transmission shaft, The ball of the inclined ball joint is configured to frictionally contact the end of the crankshaft with limited movement in the front and rear direction by the crank mount, so that the rotational motion of the power transmission shaft is converted into a linear reciprocating motion of the crankshaft. Medical handpiece with suction connector and saline supply connector The crankshaft of claim 2, wherein a linear bearing and a radial bearing are formed on the crank mount as a factor for limiting the crank mount movement in the front-rear direction to support the crankshaft in a linear reciprocating motion. And a handpiece for medical use with a suction connector and a saline supply connector on the coaxial shaft, characterized in that the heat generation is reduced by reducing friction and securing a movement path. According to claim 2, Thrust bearings are placed on the front and rear of the inclined ball joint and the inner count boring portion of the power transmission shaft case to distribute the load in the axial direction during bone cutting to smoothly transmit power. Medical handpiece with suction connector and saline supply connector coaxially. The method of claim 1, wherein the mechanism portion is composed of a power transmission shaft, the inclined ball joint, the crankshaft, the crank mount, and the structure of the rubber pleated pipe sandwiched between the crank mount coupled to the accessory connection adapter, the accessory connection when saline supply A medical handpiece having a suction connector and a saline supply connector on a coaxial shaft, characterized in that the reciprocating motion is performed without introducing saline into the mechanism part connected to the adapter. According to claim 1, wherein the accessory connecting adapter and the accessory is configured to be fixedly coupled by a lock nut in a state in which the end connection portion of the accessory and one end of the accessory connection adapter, the other end of the accessory connection adapter is screwed to the mechanism portion Medical handpiece having a suction connector and a saline supply connector on the coaxial, characterized in that the coupling is formed by a projection formed in the accessory coupling portion of the accessory connection adapter to fit with the groove formed in the accessory mounted on the handpiece . The coaxial suction connector according to claim 6, wherein the suction connector connected to the bone fragment discharge passage of the accessory connection adapter is made of a silicone connector and a silicone connector protruding from the middle of the accessory connection adapter. Medical handpiece with a saline supply connection. According to any one of claims 1, 2, 3, 4, 5, 6 or 7, wherein the saline supply connection pipe is formed with a valve for blocking the saline supply Medical handpiece with suction connector and saline supply connector on the coaxial shaft 8. The saline solution according to any one of claims 1, 2, 3, 4, 5, 6 or 7, wherein the saline solution supplied from the saline supply pipe is to be supplied from the outside of the accessory. Medical handpiece with a suction connector and a saline supply connector on the coaxial, characterized in that the cylindrical protector is coupled to the outside of the accessory of the handpiece so that

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