Power switching mechanism and planer

Abstract

The utility model relates to the technical field of medical instruments, in particular to a power switching mechanism and a planer, the power switching mechanism is used for installing a cutter assembly, the cutter assembly comprises an inner cutter tube and an outer cutter tube arranged on the inner cutter tube in a sleeved mode, and the power switching mechanism comprises a connecting tube, a power transmission assembly, a driven assembly, a handle connector and a locking assembly. The connecting pipe is used for connecting the inner cutter pipe and driving the inner cutter pipe to rotate; the power transmission assembly is used for being connected with an external motor to provide power for rotation of the connecting pipe. The driven assembly is mounted on the connecting pipe, is in transmission connection with the power transmission assembly and is used for driving the connecting pipe to rotate; the handle interface is used for mounting the outer knife tube; the connecting tube is rotatably inserted into the handle interface; the locking assembly is used for locking or loosening the outer knife tube and arranged on the handle connector in a sleeving mode. According to the power switching mechanism, the tool assembly can be opened or locked by shifting the shifting button in the locking assembly so that the tool assembly can be inserted, operation is convenient and fast, and use is convenient and flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a power transfer mechanism and a planer. Background Art

[0002] In the removal of diseased tissue or soft tissue in the body such as gynecology and urology, a medical planer is usually used to achieve the removal of tissue. Existing medical planers generally include a planer tool and a power adapter handle for installing the planer tool. The planer tool usually includes an outer knife tube and an inner knife tube inserted into the outer knife tube. The front end of the outer knife tube is provided with an outer cutting window, and the side edge of the outer cutting window is provided with a plurality of outer knife teeth. The front end of the inner knife tube is provided with an inner cutting window, and the side edge of the inner cutting window is provided with a plurality of inner knife teeth. When the inner knife tube rotates relative to the outer knife tube, the outer knife teeth and the inner knife teeth move relative to each other to cut off the tissue extending into the outer cutting window, and suck the tissue into the inner cutting window. The cut soft tissue and liquid are sucked out through the vacuum system to achieve the cutting purpose.

[0003] In traditional technology, the outer blade tube of a medical planer tool is usually fixed to a driving handle by screws or other fixing structures. The driving handle drives the inner blade tube to spin at a high frequency relative to its own axis, and the inner blade tube rotates relative to the outer blade tube to remove cartilage tissue. However, during use, when replacing planer tools of different lengths, the tool needs to be plugged in and out, and the screw fixing method makes the plugging and unplugging of the tool more cumbersome and inefficient. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a power transfer mechanism and a planer, so as to at least solve the problem that the existing power transfer mechanism for inserting, removing and removing the tool has the problem of complicated operation and low efficiency.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] In a first aspect, the utility model provides a power transfer mechanism, the power transfer mechanism is used to install a tool assembly, the tool assembly includes an inner tool tube and an outer tool tube sleeved on the inner tool tube, the power transfer mechanism includes:

[0007] A connecting pipe, used to connect the inner knife pipe and drive the inner knife pipe to rotate;

[0008] A power transmission assembly, used for connecting an external motor to provide power for the rotation of the connecting pipe;

[0009] A driven component is installed on the connecting pipe and is drivingly connected to the power transmission component, and the driven component is used to drive the connecting pipe to rotate;

[0010] A handle interface, used for installing the outer knife tube, wherein the connecting tube is rotatably inserted into the handle interface;

[0011] The locking assembly is used to lock or loosen the outer knife tube, and the locking assembly is sleeved on the handle interface.

[0012] In combination with the first aspect, in some embodiments, the power transfer mechanism also includes a shell and an end cover, the end cover is installed at one end of the shell, the end cover is sleeved on the handle interface, and the power transmission component, driven component, handle interface and locking component are all installed in the shell.

[0013] In combination with the first aspect, in some embodiments, the locking assembly includes a dial button, a locking sleeve, a first spring and a steel ball, the dial button is fixed on the locking sleeve and passes through the shell, the shell has a first step hole inside at one end close to the end cover, a retaining ring is fixed on the outer surface of the handle interface, the locking sleeve is located in the first step hole, and the locking sleeve is slidably mounted on the handle interface, the locking sleeve has a second step hole inside at one end away from the end cover, a clamping ring is provided on the inner wall of the locking sleeve, a ball socket is provided on the outer wall of the outer knife tube, the clamping ring is used to clamp the steel ball in the ball socket, at least one mounting hole is provided on the tube shell at one end of the handle interface close to the end cover, the steel ball is passed through the mounting hole, the first spring is mounted on the handle interface, and the clamping ring and the first spring are respectively located at opposite ends of the retaining ring.

[0014] In combination with the first aspect, in some embodiments, the handle interface has a third step hole inside one end close to the end cover, the third step hole is used to plug in the outer knife tube, and the mounting hole is located on the tube wall corresponding to the third step hole.

[0015] In combination with the first aspect, in some embodiments, the handle interface has a water injection hole, and a water injection pipe is installed between the outer shell and the handle interface, and the water outlet hole of the water injection pipe is connected to the water injection hole; the connecting pipe is connected to a suction pipe, and the suction pipe can be connected to the internal hollow of the inner knife tube through the connecting pipe.

[0016] In combination with the first aspect, in some embodiments, the power transmission assembly includes a drive shaft, a driving gear and a duplex gear, the drive shaft is used to connect an external motor, the driving gear is fixed on the drive shaft, and the duplex gear has two gears; the driven assembly includes a driven gear and a sleeve, the driven gear is fixedly mounted on the sleeve, the sleeve is fixedly sleeved on the connecting pipe, one gear in the duplex gear is meshed with the driving gear, and the other gear is meshed with the driven gear.

[0017] In combination with the first aspect, in some embodiments, a reduction gear box is also installed in the outer shell, the drive shaft and the connecting pipe are respectively inserted into the opposite ends of the reduction gear box, the reduction gear box includes a mounting plate and a mounting seat, the drive shaft passes through the mounting plate and a driving gear is installed on one side of the mounting plate, the double gear is fixed on the mounting plate, and the connecting pipe and the driven component are located in the mounting seat.

[0018] In combination with the first aspect, in some embodiments, a fork joint is installed at one end of the drive shaft away from the driving gear, and the fork joint has a male head that cooperates with an external motor. An interface tube is sleeved on the drive shaft, and one end of the interface tube is plugged into the mounting plate.

[0019] In combination with the first aspect, in some embodiments, a first bearing is installed between the drive shaft and the interface pipe, a second bearing is installed between the sleeve and the mounting seat, and a third bearing is installed between the connecting pipe and the mounting seat.

[0020] In a second aspect, the utility model further discloses a planer, comprising the power transfer mechanism described in the first aspect.

[0021] The power transfer mechanism of the utility model is connected to the inner knife tube through a connecting tube, the outer knife tube is installed through a handle interface, and the outer knife tube is locked or loosened through a locking assembly. The tool assembly can be locked by the locking assembly when the tool assembly is plugged in and installed, and the tool assembly can be removed by operating the locking assembly when the tool assembly is replaced, which is flexible and convenient to use. The power transfer mechanism of the utility model can drive the lock sleeve to move by turning the dial button, drive the lock sleeve to move in a direction away from the end cover, and can drive the clamping ring to break away from the steel ball, release the pressure of the steel ball, and then insert the tool assembly or remove the tool assembly, release the dial button, and under the action of the first spring, the lock sleeve moves in a direction close to the end cover, driving the clamping ring to just press on the steel ball, so as to achieve the locking of the tool assembly. The power transfer mechanism of the utility model can realize the opening or locking of the tool assembly by turning the dial button, which is convenient to operate and flexible to use. The power transfer mechanism of this embodiment is not only suitable for planers, but also suitable for other tool assemblies that need to be composed of an outer knife tube and an inner knife tube rotating in the outer knife tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The cross-sectional structure diagram of the power transfer mechanism of Example 1 is shown in FIG. Figure 1 ;

[0023] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 4 The cross-sectional structure diagram of the power transfer mechanism of Example 1 is shown in FIG. Figure 2 ;

[0026] Figure 5 is a schematic structural diagram of the power transfer mechanism of Example 1;

[0027] Figure 6 is a schematic diagram of the exploded structure of the power transfer mechanism of Example 1;

[0028] Figure 7 It is an enlarged structural diagram of the handle interface;

[0029] Figure 8 It is an enlarged structural diagram of the lock sleeve;

[0030] Fig. 9 It is an enlarged structural schematic diagram of the connecting pipe;

[0031] Fig.10 It is an enlarged structural diagram of a double gear;

[0032] Fig.11 It is an enlarged structural diagram of the reduction box;

[0033] Among them, the connecting pipe 110, the driving shaft 121, the driving gear 122, the double gear 123, the fork joint 124, the interface pipe 125, the second spring 126, the driven component 130, the driven gear 131, the sleeve 132, the handle interface 140, the retaining ring 141, the mounting hole 142, the third step hole 143, the water injection hole 144, the shell 150, the plug-in terminal 151, the first step hole 152, the end cover 160, the dial button 171, the locking sleeve 172, the second step hole 1721, the clamping ring 1722, the first spring 173, the steel ball 174, the bushing 175, the reduction box 180, the mounting plate 181, the mounting seat 182, the water injection pipe 300, the water outlet hole 310, the suction pipe 400, the retaining sleeve 500, and the sealing ring 600. DETAILED DESCRIPTION

[0034] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0035] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] Example 1

[0037] Please refer to Figure 1-Figure 11 This embodiment discloses a power transfer mechanism for installing a tool assembly. The applicable tool assembly includes an inner tool tube and an outer tool tube sleeved on the inner tool tube. The inner tool tube can rotate inside the outer tool tube. The power transfer mechanism includes a connecting tube 110, a power transmission assembly, a driven assembly 130, a handle interface 140 and a locking assembly. The connecting tube 110 is used to connect the inner tool tube and drive the inner tool tube to rotate; the power transmission assembly is used to connect an external motor to provide power for the rotation of the connecting tube 110; the driven assembly 130 is installed on the connecting tube 110 and is transmission-connected to the power transmission assembly. The driven assembly 130 is used to drive the connecting tube 110 to rotate; the handle interface 140 is used to install the outer tool tube. The connecting tube 110 is rotatably inserted into the handle interface 140; the locking assembly is used to lock or loosen the outer tool tube. The locking assembly is sleeved on the handle interface 140.

[0038] In this embodiment, the power transfer mechanism further includes a housing 150 and an end cap 160, the end cap 160 is mounted at one end of the housing 150, the end cap 160 is sleeved on the handle interface 140, and the power transmission assembly, the driven assembly 130, the handle interface 140 and the locking assembly are all mounted in the housing 150. Specifically, one end of the housing 150 has a plug-in terminal 151, and the end cap 160 is tightly sleeved on the plug-in terminal 151 to achieve a tight connection between the end cap 160 and the housing 150.

[0039] Please refer to Figure 2In this embodiment, the locking assembly includes a dial button 171, a locking sleeve 172, a first spring 173 and a steel ball 174. The dial button 171 is fixed on the locking sleeve 172 and passes through the shell 150. The shell 150 has a first step hole 152 inside at one end close to the end cover 160. A retaining ring 141 is fixed on the outer surface of the handle interface 140. The locking sleeve 172 is located in the first step hole 152, and the locking sleeve 172 is slidably mounted on the handle interface 140. The locking sleeve 172 has a second step hole 1721 inside at one end away from the end cover 160, and the retaining ring 141 is located in the second step hole 1721. The inner wall of the lock sleeve 172 is provided with a clamping ring 1722, and the outer wall of the outer blade tube is provided with a ball socket. The clamping ring 1722 is used to clamp the steel ball 174 in the ball socket. The tube shell at one end of the handle interface 140 close to the end cover 160 is provided with at least one mounting hole 142, preferably four mounting holes 142 are provided, and the four mounting holes 142 are arranged at equal distances on the same circumference of the handle interface 140, and four steel balls 174 are provided correspondingly, and the steel balls 174 are inserted into the mounting holes 142. The first spring 173 is sleeved on the handle interface 140, and the clamping ring 1722 and the first spring 173 are respectively located at opposite ends of the retaining ring 141. A bushing 175 is also sleeved on one end of the lock sleeve 172 close to the end cover 160.

[0040] When the tool assembly needs to be disassembled, the dial button 171 is toggled in the direction away from the end cover 160, driving the locking sleeve 172 to move in the direction away from the end cover 160 and compressing the first spring 173 at the same time. At this time, the clamping ring 1722 inside the locking sleeve 172 is separated from the steel ball 174, and the tool assembly can be pulled out; when the tool assembly needs to be plugged in, the dial button 171 is first toggled in the direction away from the end cover 160 to allow the clamping ring 1722 to separate from the steel ball 174, and then the tool assembly is inserted, the dial button 171 is released, and under the action of the restoring force of the first spring 173, the locking sleeve 172 is driven to move in the direction close to the end cover 160, and the clamping ring 1722 presses the steel ball 174 into the ball socket on the outer knife tube, thereby pressing and fixing the outer knife tube.

[0041] In this embodiment, the handle interface 140 has a third step hole 143 inside the end near the end cover 160, and the third step hole 143 is used to plug the outer knife tube, and the mounting hole 142 is located on the tube wall corresponding to the third step hole 143. The handle interface 140 has a water injection hole 144, and a water injection pipe 300 is installed between the shell 150 and the handle interface 140, and the water outlet 310 of the water injection pipe 300 is connected to the water injection hole 144. The end of the water injection pipe 300 near the water outlet 310 is sealed, but it does not affect the water outlet 310. The connecting pipe 110 is connected to the suction pipe 400, and the suction pipe 400 can be connected to the inner hollow of the inner knife tube through the connecting pipe 110.

[0042] Please refer to Figure 3In this embodiment, the power transmission assembly includes a driving shaft 121, a driving gear 122 and a double gear 123. The driving shaft 121 is used to connect an external motor. The driving gear 122 is fixed on the driving shaft 121. The double gear 123 has two gears. The driven assembly 130 includes a driven gear 131 and a sleeve 132. The driven gear 131 is fixedly mounted on the sleeve 132. The sleeve 132 is fixedly sleeved on the connecting pipe 110. One gear in the double gear 123 is meshed with the driving gear 122, and the other gear is meshed with the driven gear 131. Specifically, the double gear 123 has a small gear and a large gear. The small gear is meshed with the driven gear 131, and the number of teeth of the small gear is less than the number of teeth of the driven gear 131; the large gear is meshed with the driving gear 122, and the number of teeth of the large gear is greater than the number of teeth of the driving gear 122, so as to achieve the purpose of speed reduction. The specific gear ratio can be reasonably adjusted by technicians in this field according to actual conditions, as long as the purpose of speed reduction can be achieved. It should also be noted that the double gear 123 may also be replaced by a pulley and belt transmission method to transmit the power on the driving gear 122 to the driven gear 131 and reduce the speed.

[0043] The external motor drives the driving shaft 121 to rotate, which in turn drives the driving gear 122 to rotate, and the double gear 123 meshing with the driving gear 122 rotates, and then the driven gear 131 meshing with the pinion in the double gear 123 rotates. The rotation of the driven gear 131 drives the sleeve 132 to rotate, and drives the connecting tube 110 to rotate. When the connecting tube 110 is connected to the inner knife tube, the rotation of the connecting tube 110 will drive the rotation of the inner knife tube, so as to realize the transmission of the power of the motor to the inner knife tube.

[0044] In this embodiment, a reduction gear box 180 is also installed in the housing 150, and the drive shaft 121 and the connecting pipe 110 are respectively inserted into the opposite ends of the reduction gear box 180. The reduction gear box 180 includes a mounting plate 181 and a mounting seat 182. The drive shaft 121 passes through the mounting plate 181 and the driving gear 122 is installed on one side of the mounting plate 181. The double gear 123 is fixed to the mounting plate 181 through a pin shaft, and the connecting pipe 110 and the driven component 130 are located in the mounting seat 182.

[0045] In this embodiment, a fork joint 124 is installed at one end of the driving shaft 121 away from the driving gear 122, and the fork joint 124 has a male head that is connected to the external motor. The driving shaft 121 is sleeved with an interface pipe 125, and one end of the interface pipe 125 is plugged into the mounting plate 181. The driving shaft 121 is also sleeved with a second spring 126, and the second spring 126 is located in the interface pipe 125. A first bearing 191 is installed between the driving shaft 121 and the interface pipe 125, a second bearing 192 is installed between the sleeve 132 and the mounting seat, and a third bearing 193 is installed between the connecting pipe 110 and the mounting seat 182. A stopper sleeve 500 is sleeved on one side of the third bearing 193 on the connecting pipe 110. A sealing ring 600 is sleeved on one side of the second bearing 192 on the connecting pipe 110.

[0046] The power transfer mechanism of this embodiment can drive the lock sleeve 172 to move by turning the dial button 171, and drive the lock sleeve 172 to move away from the end cover 160, and can drive the clamping ring 1722 to separate from the steel ball 174, release the pressure of the steel ball 174, and then insert or remove the tool assembly, release the dial button 171, and under the action of the first spring 173, the lock sleeve 172 moves toward the end cover 160, driving the clamping ring 1722 to just press on the steel ball 174, so as to lock the tool assembly. The power transfer mechanism of this embodiment is not only suitable for planers, but also suitable for other tool assemblies that need to be plugged in and used by an outer knife tube and an inner knife tube rotating in the outer knife tube.

[0047] The power transfer mechanism of this embodiment can be used to inject water, flush and cool the part where the tool assembly acts, and can also suck out the planed tissue and liquid. Specifically, the water injection pipe 300 is connected to an external water injection device (such as a peristaltic pump), and the external negative pressure suction device is connected to the suction pipe. During surgery, the water injected from the outside flows through the water outlet 310 of the water injection pipe 300 through the water injection hole 144, enters the inside of the handle interface 140, fills the cavity formed by the inner wall of the handle interface 140 and the outer wall of the inner knife tube inside the handle interface 140, and enters the gap formed by the outer knife tube and the inner knife tube, flushes the surgical site, and moistens and cools the cutter head. When suction is required, the soft tissue and liquid cut off from the surgical site enter the connecting tube 110 through the hollow interior of the inner knife tube, and enters the suction tube 400, and is sucked out by the external negative pressure suction device.

[0048] Example 2

[0049] Please continue to refer to Figure 1-Figure 11This embodiment provides a planer, comprising the power transfer mechanism and the tool assembly of embodiment 1. The tool assembly is plugged into the power transfer mechanism, and the tool assembly comprises an outer tool tube and an inner tool tube rotatably arranged inside the outer tool tube, one end of the inner tool tube is connected to the connecting tube 110, one end of the outer tool tube is plugged into the handle interface 140, and the outer tool tube has a ball socket, when the outer tool tube is plugged into the handle interface 140, the clamping ring 1722 presses the steel ball 174 into the ball socket.

[0050] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A power transfer mechanism, the power transfer mechanism is used to install a tool assembly, the tool assembly includes an inner tool tube and an outer tool tube sleeved on the inner tool tube, characterized in that: The power transfer mechanism comprises: A connecting pipe, used to connect the inner knife pipe and drive the inner knife pipe to rotate; A power transmission assembly, used for connecting an external motor to provide power for the rotation of the connecting pipe; A driven component is installed on the connecting pipe and is drivingly connected to the power transmission component, and the driven component is used to drive the connecting pipe to rotate; A handle interface, used for installing the outer knife tube, wherein the connecting tube is rotatably inserted into the handle interface; The locking assembly is used to lock or loosen the outer knife tube, and the locking assembly is sleeved on the handle interface.

2. The power transfer mechanism according to claim 1, characterized in that: The power transfer mechanism also includes a shell and an end cover, wherein the end cover is installed at one end of the shell and sleeved on the handle interface, and the power transmission component, the driven component, the handle interface and the locking component are all installed in the shell.

3. The power transfer mechanism according to claim 2, characterized in that: The locking assembly includes a dial button, a locking sleeve, a first spring and a steel ball. The dial button is fixed on the locking sleeve and passes through the shell. The shell has a first step hole inside at one end close to the end cover. A retaining ring is fixed on the outer surface of the handle interface. The locking sleeve is located in the first step hole, and the locking sleeve is slidably mounted on the handle interface. The locking sleeve has a second step hole inside at one end away from the end cover. A clamping ring is provided on the inner wall of the locking sleeve, and a ball socket is provided on the outer wall of the outer knife tube. The clamping ring is used to clamp the steel ball in the ball socket. The tube shell at one end of the handle interface close to the end cover has at least one mounting hole, and the steel ball is mounted in the mounting hole. The first spring is mounted on the handle interface, and the clamping ring and the first spring are respectively located at opposite ends of the retaining ring.

4. The power transfer mechanism according to claim 3, characterized in that: The handle interface has a third step hole inside one end close to the end cover, and the third step hole is used for plugging the outer knife tube. The mounting hole is located on the tube wall corresponding to the third step hole.

5. The power transfer mechanism according to claim 4, characterized in that: The handle interface is provided with a water injection hole, and a water injection pipe is installed between the shell and the handle interface, and the water outlet of the water injection pipe is connected with the water injection hole; the connecting pipe is connected with a suction pipe, and the suction pipe can be connected with the internal hollow of the inner knife tube through the connecting pipe.

6. The power transfer mechanism according to claim 2, characterized in that: The power transmission component includes a driving shaft, a driving gear and a duplex gear, wherein the driving shaft is used to connect to an external motor, the driving gear is fixed on the driving shaft, and the duplex gear has two gears; the driven component includes a driven gear and a sleeve, the driven gear is fixedly mounted on the sleeve, the sleeve is fixedly sleeved on the connecting pipe, one gear in the duplex gear is meshed with the driving gear, and the other gear is meshed with the driven gear.

7. The power transfer mechanism according to claim 6, characterized in that: A reduction box is also installed in the shell, and the drive shaft and the connecting pipe are respectively inserted at opposite ends of the reduction box. The reduction box includes a mounting plate and a mounting seat. The drive shaft passes through the mounting plate and a driving gear is installed on one side of the mounting plate. The double gear is fixed on the mounting plate, and the connecting pipe and the driven component are located in the mounting seat.

8. The power transfer mechanism according to claim 7, characterized in that: A fork joint is installed at one end of the drive shaft away from the driving gear. The fork joint has a male head that is connected to an external motor. An interface pipe is sleeved on the drive shaft, and one end of the interface pipe is plugged into the mounting plate.

9. The power transfer mechanism according to claim 8, characterized in that: A first bearing is installed between the driving shaft and the interface pipe, a second bearing is installed between the sleeve and the mounting seat, and a third bearing is installed between the connecting pipe and the mounting seat.

10. A planer, characterized in that: The planer comprises the power transfer mechanism according to any one of claims 1-9.

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