WO2019042422A1 - Power handle for surgical stapler - Google Patents

Abstract

The present invention provides a power handle for a surgical stapler, comprising a housing, a power mechanism, and a battery; the housing comprises a housing body and a grip portion housing connected to the housing body; the power mechanism comprises a first power unit and a second power unit; the first power unit is provided at the front-middle part in the housing body, and the first power unit is used for driving at least one first torque output section mounted at the front end of the housing body; the second power unit is provided in the grip portion housing, and the second power unit is used for driving, by means of a transmission mechanism, at least one second torque output section mounted at the front end of the housing body; the battery is provided at the rear part in the housing body. According to the present invention, the power mechanism is arranged in the grip portion housing and the housing body in a distributed manner, sufficiently using the space in the handle, simplifying the structure and avoiding crowding, facilitating the mounting and heat dissipation of the power units; furthermore, the battery is arranged at the rear part of in the housing body, balancing the front part and the rear part.

Description

Stapler power handle Technical field

The invention belongs to the technical field of medical instruments, and in particular relates to a stapler power handle.

Background technique

At present, the laparoscopic cutting stapler is mainly divided into three kinds of disposable manual laparoscopic cutting stapler, disposable electric laparoscopic cutting stapler and electric cutting stapler.

Among them, the disposable manual endoscopic cutting stapler has the problems of laborious operation, unstable anastomosis, poor consistency of titanium nail formation and high use cost. The disposable motorized mirror cutting stapler can only replace the same length model nail cartridge, which has no universality; the manual emergency retracting function is used, the handle is scrapped, and the one-time use cost is high.

In view of the above deficiencies, an electric cutting stapler has been developed. The power handle is mainly composed of a housing, a motor, a power transmission mechanism, a battery, etc. The front end of the power handle is connected to the magazine by a connecting rod, and the motor is powered by the battery to drive the stapler. The actuator of the power handle works to drive the nail to complete the cutting, suturing and the like to complete the operation. Although it overcomes the problems of high effort and high cost of use, it still has defects:

1. A plurality of motors for driving the stapler to cut, bend, and rotate are arranged on the upper part of the casing, the structure is complicated, the transmission mechanism is numerous, the assembly precision is difficult to ensure, the operator's requirements are high, and the upper part of the casing is caused. The increase in volume makes the entire power handle bulky.

2. A plurality of motors are clustered in the upper part of the casing, and generate a large amount of heat, which is not easy to dissipate heat in the closed casing, and affects the normal operation of other components such as electronic components.

3. The battery is installed at the lower end of the grip portion of the housing. When the hand is held, the lower end feels heavy, and the front and rear are unbalanced, which is inconvenient to operate.

4. The cleaning and disinfection process is complicated after use, and the overall power handle of the stapler cannot be sterilized by high temperature. The stapler power handle housing is a disposable, detachable structure. Each time it is used, the housing needs to be separately sterilized, and then the housing is mounted on the internal structure of the stapler power handle for surgery. The outer casing is scrapped, and the new sterilization casing is replaced at the next use. On the one hand, the installation and disassembly is troublesome. On the other hand, the disposable casing increases the use cost; in addition, the overall structure of the stapler power handle cannot be autoclaved, and the sterilization is not in place. The risk of infection.

Summary of the invention

In view of the deficiencies of the prior art described above, an object of the present invention is to provide a stapler power handle, which has a reasonable structural arrangement, a simple structure, a modular structure, balanced front and rear weights, and convenient operation.

To achieve the above and other related objects, the technical solution of the present invention is as follows:

An anastomotic power handle includes a housing, a power mechanism and a battery, the housing comprising a housing body and a grip housing coupled to the housing; the power mechanism includes a first power unit and a second power unit; the first power unit a front central portion disposed in the housing body, the first power unit is configured to drive at least one first torque output portion mounted at a front end of the housing body; the second power unit is disposed in the handle housing, and the second power unit is configured to pass the transmission mechanism At least one second torque output portion mounted at the front end of the housing is driven; the battery is disposed at a rear portion of the housing.

With the above structure, the power mechanism is dispersedly disposed in the handle and the inside of the shell, fully utilizing the handle space, simplifying the structure to avoid crowding, facilitating installation and heat dissipation of each power unit; and the battery is arranged in the rear or rear of the shell body, The effect of balancing before and after.

Further, the first torque output portion and the second torque output portion respectively have an axis of rotation; each axis of rotation is parallel to a center line of the shell body; or one of the axes of rotation is larger than a center line of the shell body, and the other The rotation axis is parallel to the center line of the shell body; the first power unit includes a first motor and a second motor, the output shaft of the first motor is coupled to the first power shaft, and the output shaft of the second motor is coupled to the second power shaft; The first torque output portion is configured as two, the front end of the first power shaft is connected to one first torque output portion, and the front end of the second power shaft is connected to the other first torque output portion; the axis of the first power shaft is coupled to the first motor The axis of the output shaft is largely coincident; the axis of the second power shaft is substantially coincident with the axis of the output shaft of the second motor; the axis of rotation of each of the first torque output portions is coincident with the axis of the corresponding first power shaft or the axis of the second power shaft .

Further, the second power unit includes a third motor, and an output shaft axis of the third motor is parallel or coincident with a center line of the grip portion housing; the transmission mechanism includes a transmission shaft located inside the housing body, and the axis of the transmission shaft is parallel to the housing a center line of the body; the second torque output portion is configured as one, the rear end of the second torque output portion is connected to the front end of the third power shaft, and the axis of the third power shaft is parallel or coincident with the center line of the shell body, and the second The rotation axis of the torque output portion is substantially coincident with the axis of the third power shaft; the rear end of the transmission shaft is drivingly coupled to the output shaft of the third motor, and the front end of the transmission shaft is drivingly coupled to the third power shaft.

Further, the rear end of the drive shaft and the output shaft of the third motor are drivenly connected by a bevel gear pair or by a worm gear pair; and/or the front end of the drive shaft is drivingly coupled to the third power shaft via a spur gear pair.

Further, the first torque output unit and the second torque output unit are both flat head torque output units.

Further, the stapler power handle further includes a support mechanism located inside the shell body, at least a portion of the shaft shaft of the drive shaft, the first motor, the second motor, the first torque output portion, the first power shaft, the second power shaft, and the The two torque output portions and the third power shaft are respectively mounted on the support mechanism.

Further, the first torque output portion, the first power shaft, the second power shaft, the second torque output portion, the third power shaft, the first motor, the second motor and the transmission shaft are integrated on the support mechanism to form an integration The upper power module is disassembled and assembled; a positioning mechanism for fixing the third motor is disposed in the handle housing, the output shaft of the third motor is detachably connected to the transmission shaft, and the third motor and the positioning mechanism are integrally formed and disassembled. Lower power module.

When the instrument is assembled, the main body of the power head, the first motor, the second motor and the transmission mechanism are first mounted on the support mechanism to form an integral module, and then the shell body is inserted, and the lower power module is first integrated and then loaded into the grip. The housing is then mated with the connecting portion of the upper power module and the lower power module. By integrating the internal components of the stapler power handle into a modular structure and reassembling, the installation structure is simplified, the orderly installation of each component is ensured, the assembly efficiency is improved, the assembly precision is ensured, and the housing is avoided. Scattered or messy behind the body, facilitating the overall arrangement of the instrument structure.

Further, the supporting mechanism includes a first bracket and a second bracket arranged in front and rear; the first bracket and the second bracket are correspondingly provided with a plurality of mounting holes, and the first power shaft, the second power shaft and the third power shaft are rotatable through the bearing The ground is installed in the corresponding mounting hole; the second bracket is provided with a support hole for mounting the first motor and the second motor.

Further, the outer circumference contour of the first bracket has a circular structure; the second bracket includes a first circular support seat and a second circular support seat disposed front and rear, and is connected to the first circular support seat and the second circular support a support bridge between the seats; the first bracket is detachably connected to the first circular support seat, and the outer peripheral contours of the first circular support base and the second circular support base are matched with the inner cavity wall of the shell body; The hole is defined in the first bracket and the first circular support seat, and the support hole is at least opened on the second circular support seat; the transmission shaft is rotatably supported by the first circular support seat and the second circular support base.

Further, the middle portion of the drive shaft is rotatably supported by the support bridge.

Further, a positioning mechanism for fixing the third motor is disposed in the handle housing, and a limiting mechanism for limiting the circumferential rotation of the supporting mechanism is disposed between the supporting mechanism and the housing or between the supporting mechanism and the positioning mechanism.

Further, a finite slot is disposed on the support bridge, and a sidewall of the limiting slot is formed with a first stop cutting plane; the positioning mechanism is provided with a limiting protrusion adapted to extend into the limiting slot, and the limiting protrusion has a The second non-rotating section of the first non-rotating section cooperates.

Further, the limiting groove has a rectangular groove, and the portion of the limiting protrusion extending into the limiting groove matches the shape of the limiting groove.

Further, the second torque output portion is located between the two first torque output portions, and the first torque output portion and the second torque output portion are arranged in a linear direction; the output of the first motor is in a lateral cross section of the shell body The center of the shaft, the line connecting the center of the output shaft of the second motor and the center of the drive shaft form a triangle.

Further, the first bracket is provided with a pin interface mounting hole; and/or the circuit board mounting hole is disposed on the support bridge.

Further, the support mechanism is provided with a plurality of mounting holes and a plurality of support holes, and the first power shaft, the second power shaft and the third power shaft are rotatably mounted in the corresponding mounting holes through the bearings; the first motor and the first The two motors are mounted in corresponding support holes.

Further, the supporting mechanism comprises an integral cylindrical section and a cylindrical section, the cylindrical section is located at the front end of the cylindrical section; the mounting hole and the supporting hole are both disposed in the cylindrical section; the cylindrical section is further provided with a driving shaft mounting hole, and the transmission shaft is worn a drive shaft mounting hole; the first torque output portion and the second torque output portion respectively extend into the inner cavity of the cylinder segment.

Further, the cylindrical section has a side cutting surface, the side cutting surface forms a support platform for mounting the first circuit board; and/or the cylinder wall of the cylinder section is provided with a locking hole for mounting the locking steel ball and for mounting protection a limiting hole of the rotating structure; and/or the outer peripheral wall of the cylindrical section is provided with a stop flange.

Further, a holder and a second circuit board are further mounted in the handle housing, and the second circuit board and the third motor are both mounted on the support.

Further, the support is provided with a slot for mounting the second circuit board; the handle housing is provided with a button assembly, and the side wall of the slot is provided with a connecting hole corresponding to the position of the button assembly.

Further, the upper end of the support is formed with a protruding portion extending into the shell body, the front end surface of the protruding portion and the rear end surface of the cylindrical portion have mutually contacting portions, and the protruding portion is provided with a shaft hole through which the transmission shaft passes; A guide post mounting hole is disposed correspondingly on the protruding portion and the cylindrical section, and a guiding post is disposed in the guiding post mounting hole, and an axis of the guiding post is parallel to an axis of the driving shaft.

Further, the rear end of the transmission shaft and the output shaft of the third motor are drivingly connected by a bevel gear pair, and a protection cover disposed outside the bevel gear pair is mounted on the support.

Further, the housing, the first power shaft, the second power shaft, the third power shaft, the first torque output portion, the second torque output portion, the support mechanism, and the transmission mechanism are made of metal.

Further, the front end of the shell body is provided with a first loading inlet, and the lower end of the grip housing is provided with a second loading inlet, and the upper part of the shell is provided with a window corresponding to the position of the grip housing, and the cover is mounted, and the battery is accommodated. In the battery compartment at the back of the case.

The structure facilitates the installation of the components of the handle assembly, and the opening of the window facilitates fine adjustment of the components after the housing is installed and wiring connections.

As described above, the beneficial effects of the present invention are: dispersing the power mechanism in the handle and the inside of the casing, fully utilizing the handle space, simplifying the structure, avoiding the crowd, facilitating the installation and heat dissipation of each power unit; and the battery is disposed behind the shell Department, plays a role of balance before and after.

DRAWINGS

1 is a schematic structural view of Embodiment 1 of the present invention;

2 is a perspective view of the upper power module and the lower power module (excluding the positioning mechanism) of Embodiment 1;

Figure 3 is a front elevational view of Figure 2;

4 is a schematic view showing the arrangement of a motor and a transmission mechanism according to Embodiment 1 of the present invention;

Figure 5 is a schematic structural view of a second bracket;

Figure 6 is a cross-sectional view showing the power head mounted on the first bracket and the second bracket;

Figure 7 is a schematic structural view of Embodiment 2 of the present invention;

FIG. 8 is a schematic structural view of Embodiment 3 of the present invention.

Figure 9 is a schematic view showing the internal structure of Embodiment 4 of the present invention;

10 is a schematic diagram of an external structure according to Embodiment 4 of the present invention;

11 and FIG. 12 are perspective views of a first power unit in Embodiment 4 of the present invention;

Figure 13 is a front elevational view of the first power unit in Embodiment 4 of the present invention;

Figure 14 is a bottom plan view of the first power unit in Embodiment 4 of the present invention;

Figure 15 is a cross-sectional view taken along line A-A of Figure 13;

Figure 16 is a cross-sectional view taken along line B-B of Figure 14; Figure 17 is a schematic view showing the structure of the bracket according to Embodiment 4 of the present invention;

Figure 18 is a cross-sectional view showing a stent in Embodiment 4 of the present invention;

Figure 19 is a cross-sectional view showing a second power unit in Embodiment 4 of the present invention;

20 and FIG. 21 are perspective views of a second power unit in Embodiment 4 of the present invention;

Figure 22 is a cross-sectional view of the holder in the fourth embodiment of the present invention;

23 to 25 are perspective views of various angles of the support in the embodiment 4 of the present invention.

Detailed ways

The embodiments of the present invention are described in the following specific embodiments, and those skilled in the art can readily appreciate the other advantages and effects of the present invention from the disclosure.

Example 1

As shown in FIGS. 1 to 4, a stapler power handle includes a housing, a power mechanism, and a battery 8 and the like. The housing includes a housing body 11 and a grip housing 12, the housing body 11 is laterally disposed, and the grip housing 12 is coupled below the housing body 11 and constitutes a handle portion. The grip portion housing 12 is disposed obliquely or vertically with respect to the housing body 11. The power mechanism includes a first power unit and a second power unit. The first power unit is laterally disposed in a middle front portion of the housing body 11, and the second power unit is disposed in the grip housing 12. The first power unit is for driving at least one first torque output portion mounted at the front end of the casing body 11, and the second power unit is for driving at least one second torque output portion mounted at the front end of the casing body 11 by a transmission mechanism. The first torque output portion and the second torque output portion respectively have rotation axes; each of the rotation axes is parallel to the center line of the shell body 11; or one of the rotation axes is larger than the center line of the shell body, and other rotation axes They are parallel to the center line of the shell body 11, respectively.

A battery compartment 13 is disposed in the rear of the casing 11, and the battery 8 is disposed in the battery compartment 13. The power mechanism is dispersedly disposed in the grip portion housing 12 and the shell body 11, fully utilizing the space of the grip portion housing 12, simplifying the structure to avoid crowding, facilitating installation and heat dissipation of each power unit; and the battery 8 is disposed on the shell body At the back of the 11th, it plays a role of balance. Compared with the prior art, the structural arrangement and space utilization are more reasonable, the modular installation is more convenient, and the performance is superior.

Wherein, the first power unit includes a first motor 21 and a second motor 22 arranged in parallel, and the second power unit includes a third motor 31. Each motor includes a motor body and a speed reduction mechanism connected to the output end of the motor body, that is, each motor uses a geared motor.

The stapler power handle further includes three power heads 71, 72, 73 and a support mechanism for supporting the first motor 21 and the second motor 22, and the first motor 21 and the second motor 22 are mounted on the support mechanism, and the power head 7 Mounted at the front of the support mechanism, the first motor 21 and the second motor 22 are correspondingly coupled to two of the power heads 71, 73, and the third motor 31 is coupled to the other power head 72 via a transmission mechanism.

The power head 71 includes a first power shaft 701 and a first torque output portion 702. The first motor 21 is coupled to the first power shaft and the two axes are largely coincident, and the axis of the first power shaft and the first torque output portion are The axis of rotation of 702 is largely coincident. The power head 73 includes a second power shaft 731 and another first torque output portion 732. The second motor 22 is coupled to the second power shaft 731 and the two axes are largely coincident, and the axis of the second power shaft 731 and the other The rotation axis of one torque output portion 732 is largely coincident.

The output axis of the third motor 31 is parallel or coincident with the centerline of the grip portion housing 12. The transmission mechanism includes a drive shaft 61 located within the housing body 11, the axis of the drive shaft 61 being parallel to the centerline of the housing body 11. The power head 72 includes a third power shaft 721 and a second torque output portion 722. The rear end of the second torque output portion 722 is coupled to the front end of the third power shaft 721, and the axis of the third power shaft 721 is parallel or coincident with the shell. The center line of the body 11 and the rotation axis of the second torque output portion 722 are larger than the axis of the third power shaft 721. The rear end of the drive shaft 61 is drivingly coupled to the output shaft of the third motor 31. The front end of the drive shaft 61 is drivingly coupled to the third power shaft, for example, by a spur gear pair, and the rear end of the drive shaft 61 and the output shaft of the third motor 31 are, for example, The connection is driven by a bevel gear pair or a worm gear pair. The first torque output portion and the second torque output portion may both be flat head torque output portions.

Alternatively, the torque output portion and the power shaft of each power head may be of a unitary structure.

Wherein, the power heads 71, 72, 73 integrated on the support mechanism, the first motor 21, the second motor 22 and the main body portion of the transmission mechanism form the upper power module 500; in order to facilitate the support and fixation of the third motor 31, the grip A positioning mechanism 32 for fixing the third motor 31 is disposed in the housing 12, and another portion of the transmission mechanism is mounted on the third motor 31. The driving connection between the output shaft of the third motor 31 and the transmission shaft 61 is detachable. Ground connection, third motor 31 and positioning mechanism 32 form lower power module 600.

The front end of the shell body 11 is connected to the stapler connecting rod, and transmits power to the stapler connecting rod through the power head. The front end of the shell body 11 is provided with a first loading port 16 and the lower end of the grip body housing 12 is provided with a second loading port. 17. The second loading port 17 can be provided with an end cap. When the instrument is assembled, the power heads 71, 72, 73, the first motor 21, the second motor 22, and the main body portion of the transmission mechanism are first mounted on the support mechanism to form an integral module, for example, through the front end of the shell body 11 The inlet 16 is inserted into the inside of the casing 11; the lower power module is also integrated into an integral module, for example, by the second loading port 17 at the lower end of the grip housing 12, and then the upper power module 500 and The connecting parts of the lower power module 600 can be docked, first integrated into a modular structure and reassembled, ensuring the orderly installation of the various components, avoiding scattering or mess after loading the casing, and facilitating the overall arrangement of the instrument structure.

Specifically, as shown in FIG. 6, the power heads 71, 72, 73 include a power shaft 701 and a flat torque output portion 702 at the front end of the power shaft, and the front end of the flat torque output portion 702 is provided with an arcuate or inclined guide surface. The power shaft 701 is axially limited by the limiting structure. The limiting structure is a snap ring 75 disposed on the power shaft 701. A seal ring 76 is disposed around the front end of the power shaft 701 and the power head mounting hole of the first bracket 5 to achieve sealing.

As shown in FIG. 5, the support mechanism includes a first bracket 5 and a second bracket 4 disposed in front and rear. The first bracket 5 and the second bracket 4 can be connected by using a card, a plug, a screw, or a solder. A bracket 5 and a second bracket 4 are correspondingly provided with three pairs of front and rear mounting holes 44. The power shafts of the power heads are rotatably mounted in the corresponding pair of front and rear mounting holes 44 through bearings 74, and the second bracket 4 is opened for The support holes 45 of the first motor 21 and the second motor 22 are mounted, and the rear portions of the first motor 21 and the second motor 22 are mounted in the corresponding support holes 45, and the front ends are connected to the power heads 71, 73.

Referring specifically to FIGS. 1 and 6, the outer circumference of the first bracket 5 has a circular structure, and three mounting holes 44 are also arranged side by side on the first bracket 5 such that the first torque output portion and the second torque output portion Arrange in a straight line. The first bracket 5 is further provided with a pin interface mounting hole 51. The second bracket 4 includes a front support base (first circular support base) 41 having a circular outer peripheral contour, a rear support base (second circular support base) 43 having a circular outer peripheral contour, and a front support A support bridge 42 between the seat 41 and the rear support seat 43. The first bracket 5 is preferably detachably coupled to the front support base 41. The support holes 45 are arranged side by side on the rear support base 43 such that the first motor 21 and the second motor 22 are arranged side by side. The first bracket 5, the front support base 41 and the rear support base 43 each have a circular outer peripheral contour adapted to the shape of the inner cavity of the casing body, facilitating the installation fit. The mounting hole 44 is disposed on the first bracket 5 and the front support base 41, and the support hole is disposed, for example, on the rear support base 43.

Further, an axial radial positioning structure for axial and radial limiting is disposed between the first bracket 5 and the second bracket 4. The axial distance between the first bracket 5 and the second bracket 4 is ensured by the axial radial positioning mechanism, as well as limiting the radial movement of both.

Preferably, the axial radial positioning structure is composed of a positioning sleeve 77 and a plurality of limiting blocks 48. The positioning sleeve 77 is disposed at the rear end of the first bracket 5, and the plurality of limiting blocks 48 are disposed at the front end of the second bracket 4, and the limit is Preferably, the block 48 is three, and the positioning sleeve 77 is sleeved outside the limiting block 48. The limiting block 48 is an arc-shaped convex block having an arc-shaped outer peripheral surface. The outer peripheral surface cooperates with the inner wall of the positioning sleeve 77, and the positioning sleeve 77 is higher. The limiting block 48, the end of the positioning sleeve 77 abuts against the second bracket 4, ensuring that the axial distance between the first bracket 5 and the second bracket 4 is reliable and does not cause radial offset.

In order to facilitate the installation of the signal interface, the first bracket 5 is provided with a pin interface mounting hole 51. Further, the first bracket 5 and the second bracket 4 each have a generally circular outer contour, and the circular outer contour generally corresponds to the inner peripheral contour of the shell to facilitate installation.

The transmission mechanism includes a transmission shaft 61, a bevel gear pair formed by a pair of bevel gears 62, 63, and a pair of transmission gears, wherein the transmission gear includes a spur gear pair formed by the meshing drive gear 64 and the driven gear 65. The drive shaft 61 is mounted on the second bracket 4, rotatably supported by the front support base 41 and the rear support base 43, and is located below the first motor 21 and the second motor 22. Specifically, the front support base 41 and the rear support base 43 are correspondingly provided with drive shaft holes 46, and the front and rear portions of the drive shaft 61 are installed in the corresponding drive shaft holes 46. In order to facilitate the stable support of the drive shaft 61, a drive shaft hole 46 is also formed in the support bridge 42 to support the middle of the drive shaft 61. Two bevel gears 62, 63 are mounted on the output shaft of the third motor 31 and the rear of the drive shaft 61, respectively. The drive gear 64 is mounted on the front of the drive shaft 61, and the driven gear 65 is mounted on the power shaft 701 of the power head 72 corresponding to the third motor 31. The power of the first motor 21 and the second motor 22 is decelerated by the speed reduction mechanism and directly transmitted to the power heads 71, 73. The power of the third motor 31 is decelerated by the speed reduction mechanism, transmitted from the bevel gear pair to the transmission shaft 61, and then transmitted to the power head 72 via the driving gear 64 and the driven gear 65.

In this example, three power heads are arranged side by side, and the power head 72 corresponding to the third motor 31 is located between the two power heads 71, 73 corresponding to the first motor 21 and the second motor 22, that is, the second torque output portion. Located between the two first torque output portions. In the lateral section of the casing 11, the center of the output shaft of the first motor 21, the center of the output shaft of the second motor 22 and the center of the drive shaft 61 form a triangle, preferably an isosceles triangle, which is compact in configuration. The internal space of the shell 11 is more rationally utilized.

Further, in order to prevent the upper power module 500 from rotating in the shell body 11, a limit mechanism is disposed between the support mechanism and the housing or between the support mechanism and the positioning mechanism 32 for achieving the circumferential limit of the upper power module as a whole. Limit the circumferential rotation of the support mechanism. In this embodiment, the limiting mechanism is a matching limiting slot 47 and a limiting protrusion 33. The limiting slot 47 is disposed on the supporting bridge 42 of the second bracket 4, and the limiting protrusion 33 is disposed at the upper end of the positioning mechanism 32. The positioning mechanism 32 is mainly located in the grip housing 12 and is used to fix the third motor 31. The sidewall of the limiting slot 47 is formed with a first non-rotating section, and the limiting projection 33 has a second non-rotating section that cooperates with the first toroidal section. In this embodiment, preferably, the limiting slot 47 has a rectangular recess, and a portion of the limiting protrusion 33 that protrudes into the limiting slot 47 matches the shape of the limiting slot 47. During assembly, the limiting protrusions 33 are extended into the limiting slots 47 to restrict the rotation of the second bracket 4 in the housing body 11, and to limit the rotation of the positioning mechanism 32 in the grip housing 12, thereby realizing the supporting mechanism relative to the housing. The circumferential positioning and axial positioning of the body 11.

Further, a front end of the front support base 41 is provided with a limiting block 48 for connecting with the front component, and a rear end of the rear support base 43 is provided with a limiting member 49 protruding rearward. The limiting block 48 is used for connection with the remaining components, and the limiting member 49 is used for axial positioning after the bracket is turned into the housing. In this example, the limiting block 48 is an arcuate bump.

Preferably, a circuit board mounting hole 410 is provided on the support bridge 4 for integrally mounting a wiring board or the like.

Preferably, the casing body 11, the grip portion housing 12, the power heads 71, 72, 73, the first bracket 5, the second bracket 4, and the transmission mechanism are made of metal. These structures are made of metal, so that the handle can be subjected to overall high temperature sterilization after the battery 8 is taken out, which overcomes the problem that the handle cannot be integrally sterilized in the prior art, and the sterilization housing is separately replaced every time, thereby reducing the use cost.

Wherein, the shell body 11 and the grip portion housing 12 may be detachably connected or fixedly connected. Preferably, the shell body 11 and the grip portion housing 12 are integrally formed, and a window 14 is opened at an upper portion of the shell body 11 corresponding to the grip portion housing 12, and a cover 15 is attached. The window 14 is opened to facilitate fine adjustment of the components after the housing is mounted, as well as wiring connections and the like. The window 14 corresponds to the lower end opening of the grip portion housing 12 for ease of processing.

The advantages of the present invention over the prior art are:

1. The power unit and the battery arrangement structure are optimized, and the power unit is respectively disposed in the shell body and the grip portion housing, so that each motor has sufficient installation space to avoid multiple motors being clustered together, and the structure is complicated and inconvenient to install. On the one hand, the arrangement structure is simplified, the operation is convenient when the motor is installed, and the internal space of the housing is rationally utilized; on the other hand, the motors are arranged separately, so that the heat dissipation effect is improved.

At the same time, the battery is arranged at the rear of the shell body, which is convenient for front and rear balance when operating the stapler power handle, and is installed and disassembled more conveniently with respect to the battery mounted on the lower end of the grip portion housing.

2, modular structure, easy to install. Integrating a majority of the first power unit, the power head, and the transmission mechanism to the support mechanism to form an upper power module; the second power unit, the positioning mechanism, and one of the bevel gears constitute a lower power module; each module before being loaded into the housing Pre-assembled, assembled and then mated, the components are placed inside the housing for assembly compared with the traditional stapler power handle, which is more convenient to operate and ensures the order of the installation process.

3. The mounting position is provided by the second bracket to install the first motor, the second motor and the transmission mechanism, etc., and the support and positioning of the plurality of components are realized by the second bracket, thereby ensuring installation precision and facilitating modular management.

4. The first bracket, the second bracket, the transmission mechanism and the housing can all be made of metal, so that the stapler power handle can realize the overall high temperature sterilization after the battery is taken out, and does not need to consume a sterilization shell for each use, reducing The cost of use.

5. Open a window on the shell to facilitate adjustment and line connection after loading the parts; the window is opposite to the lower end of the grip housing for easy processing.

Example 2

As shown in FIG. 7 and in conjunction with FIG. 2, a power structure of a stapler power handle includes a housing, a plurality of motors, and a power head corresponding to the motor, wherein the housing includes a shell body 11 and a grip shell The body 12 is laterally disposed, and the grip housing 12 is coupled to the lower portion of the housing 11. At least one motor is disposed within the grip housing 12, and at least two motors are disposed in the housing 11 in parallel with each other. The motor is dispersedly disposed in the grip portion housing 12 and the housing body 11, fully utilizing the space of the grip portion housing 12, simplifying the structure and avoiding the crowding, facilitating the installation and heat dissipation of the power units, and the structure relative to the prior art Arrangement and space utilization are more reasonable.

The first motor 21 and the second motor 22 are disposed in the casing 11, and the third motor 31 is disposed in the grip housing 12. The first motor 21 and the second motor 22 serve as a power mechanism for driving the bending and rotating of the magazine, the third motor 31 is for driving the nail to cut and match, and the third motor 31 is opposite to the first motor 21 and the second motor 22 tilt. Each motor includes a motor body and a speed reduction mechanism coupled to the output end of the motor body. It should be noted that the stapler power handle is connected to the nail through the connecting rod to transmit power to the nail to perform bending, rotation, cutting and anastomosis, and the nail is an important component for contacting the tissue during the anastomosis operation.

The power heads are three, three power heads 71, 72, 73 are arranged side by side in front of the first motor 21 and the second motor 22, and the power head 72 corresponding to the third motor 31 is located corresponding to the first motor 21 and the second motor 22. Between the power heads 71, 73, the first motor 21 and the second motor 22 are connected to the two power heads 71, 73, and the third motor 31 is connected to the other power head 72 via a transmission mechanism.

The transmission mechanism includes a transmission shaft 61, a first bevel gear 62, a second bevel gear 63, a driving gear 64 and a driven gear 65. The transmission shaft 61 is disposed in parallel under the first motor 21 and the second motor 22, and the first bevel gear 62 is mounted on the output end of the third motor 31. The second bevel gear 63 is mounted on the rear of the drive shaft 61 and meshes with the first bevel gear 62. The drive gear 64 is mounted on the front of the drive shaft 61, and the driven gear 65 is mounted on the The power head 72 corresponding to the three motors 31 meshes with the driven gear 65. The power of the third motor 31 is transmitted to the drive shaft 61 via the bevel gear pair, and is transmitted to the power head 72 via the drive gear 64 and the driven gear 65.

In the above structure, the first motor 21 and the second motor 22 are directly connected to the power heads 71, 73, and the third motor 31 is connected to the power head 72 through a transmission mechanism, the transmission path is simple, and the structure is compact; the first motor 21 and the second motor There is a space between the 22 to facilitate heat dissipation.

Example 3

As shown in FIG. 8 and in conjunction with FIG. 5 and FIG. 6, on the basis of Embodiment 1, in order to facilitate installation of the first motor 21, the second motor 22, the transmission mechanism, and the power heads 71, 72, 73, There is a support mechanism, the first motor 21 and the second motor 22 are mounted on a support mechanism, and the power heads 71, 72, 73 are mounted on the front of the support mechanism.

Wherein, the power heads 71, 72, 73 integrated on the support mechanism, the first motor 21, the second motor 22 and the main part of the transmission mechanism form a module; firstly integrated into a modular structure and reassembled to ensure each The orderly installation of the components avoids scattering or mess after loading into the housing, facilitating the overall arrangement of the instrument structure.

As shown in FIG. 6, each of the power heads includes a power shaft and a flat torque output portion at the front end of the power shaft, wherein the power shaft is coupled to the motor and the flat torque output portion is configured to transmit torque.

The support mechanism includes a first bracket 5 and a second bracket 4 disposed in front and rear. The first bracket 5 and the second bracket 4 can be connected by means of snapping, plugging, screwing or welding, and the first bracket 5 and The second bracket 4 is correspondingly provided with three pairs of front and rear mounting holes 44. The power heads are rotatably mounted in the corresponding pair of front and rear mounting holes 44 through bearings 74. The second bracket 4 is provided with a first motor 21 and a second motor. The support holes 45 of 22, the rear portions of the first motor 21 and the second motor 22 are mounted in the corresponding support holes 45, and the front ends are connected to the power heads 71, 73.

The outer circumference of the first bracket 5 has a circular structure, and three mounting holes 44 are arranged side by side on the first bracket 5, and the first bracket 5 is further provided with a pin interface mounting hole 51. The second bracket 4 includes a front support base 41 having a circular outer peripheral contour, a rear support base 43 having a circular outer peripheral contour, and a support bracket 42 connected between the front support base 41 and the rear support base 43. The support holes 45 are arranged side by side on the rear support base 43 such that the first motor 21 and the second motor 22 are arranged side by side. The first bracket 5, the front support base 41 and the rear support base 43 each have a circular outer peripheral contour adapted to the shape of the inner cavity of the casing body, facilitating the installation fit.

The power of the first motor 21 and the second motor 22 is decelerated by the speed reduction mechanism and directly transmitted to the power heads 71, 73. The power of the third motor 31 is decelerated by the speed reduction mechanism, transmitted from the bevel gear pair to the transmission shaft 61, and then transmitted to the power head 72 via the driving gear 64 and the driven gear 65.

In this example, three power heads are arranged side by side, and the power head 72 corresponding to the third motor 31 is located between the two power heads 71, 73 corresponding to the first motor 21 and the second motor 22.

Further, in order to prevent the rotation of the supporting mechanism in the shell body 11, a limiting mechanism is disposed on the supporting mechanism. In this embodiment, the limiting mechanism is a limiting slot 47 disposed on the supporting frame 42, the limiting slot 47 and the housing or The other components cooperate to limit the rotation of the support mechanism after the support mechanism is loaded into the housing, so as to facilitate the circumferential positioning after the support mechanism is loaded.

Preferably, the partial portion of the shell body 11 and the grip portion housing 12 are integrally formed, and the shell body 11, the grip portion housing 12, the power heads 71, 72, 73, the first bracket 5, the second bracket 4, and the transmission The mechanism can be made of metal. These structures are made of metal, so that the grip portion housing 12 can be subjected to overall high temperature sterilization after the battery 8 is taken out, which overcomes the fact that the grip portion housing 12 cannot be integrally sterilized in the prior art, and needs to be replaced separately for each use. The problem of sterilizing the outer casing reduces the cost of use.

The advantages of the present invention over the prior art are:

1. The power unit is optimized, and the power unit is respectively disposed in the shell body and the grip shell, so that each motor has sufficient installation space to avoid clustering of multiple motors, and the structure is complicated and inconvenient to install. On the one hand, the arrangement structure is simplified, the operation is convenient when the motor is installed, and the internal space of the housing is rationally utilized; on the other hand, the motors are arranged separately, so that the heat dissipation effect is improved.

2. The mounting position is provided by the second bracket to install the first motor, the second motor and the transmission mechanism, and the support and positioning of the plurality of components are realized by the second bracket, thereby ensuring installation precision and facilitating modular management.

3. The first bracket, the second bracket, the transmission mechanism and the housing are all made of metal, so that the stapler power handle can realize the overall high temperature sterilization after the battery is taken out, and does not need to consume a sterilization shell every time, which reduces the The cost.

Example 4

As shown in FIG. 9, FIG. 10 and FIG. 15, an embodiment of the present invention further provides a stapler power handle including a housing and a power mechanism. The housing includes a housing body 11 and a grip housing 12 that is coupled to the housing body 11. The grip portion housing 12 is disposed obliquely or vertically with respect to the housing body 11. The power mechanism includes a first power unit 200 disposed within the housing 11 and a second power unit 300 disposed within the handle housing 12, wherein the first power unit 200 includes the support mechanism 100 and is disposed on the support mechanism 100 The upper motor (including the first motor 21 and the second motor 22), the power heads 71, 72, 73, the terminal 207, and the like. The second power unit 300 includes a support 301 and a mechanism such as a lower motor (third motor 31) provided on the support 301. The first motor 21 and the second motor 22 are correspondingly connected with two of the power heads 71, 73, and the third motor 31 is connected to the other power head 72 by a transmission mechanism. Each of the motors is used to drive the torque output of each of the corresponding power heads to rotate. The inside of at least one of the body 11 and the grip housing 12 is provided with a mounting position and a circuit board is mounted. Through the control of the circuit board, the power output from the upper motor and the lower motor is transmitted to the actuator through the torque output portion of the corresponding power head.

A plurality of components of the first power unit 200 are mounted on the support mechanism to form a modular assembly, and a plurality of components of the second power unit 300 are mounted on the support 301 to form another modular component, and the circuit board is disposed at the first power unit 200. And/or in the second power unit 300, the power mechanism is divided into two upper and lower modular components. Before assembling with the housing, the units are assembled and assembled with the housing. The integration of each power unit is realized, the installation positioning between the housing and the connection between the two modular components is facilitated, thereby simplifying the installation structure, improving assembly efficiency and ensuring accuracy.

For the structure of each power head, the transmission mechanism between the power head and the corresponding motor, and the relative positional relationship between the rotation axis of the power head and the center line of the housing body, reference may be made to the content described in the previous embodiment 1, and details are not described herein again. It should be noted that the transmission shaft 61 for transmitting the power of the third motor 31 to the power head 72 may be a single transmission shaft, or may be connected in series by a plurality of short shafts in the axial direction and connected to each other in a torsionally resistance manner. And formed. At least a portion of the shaft section of the drive shaft 61 (including at least one stub shaft) may be integrated on the support mechanism. Preferably, the power shaft of the power head 71 and the output shaft of the first motor 21 can be connected, for example, by a spline; the power shaft of the power head 73 and the output shaft of the second motor 22 can also be connected, for example, by splines. In this embodiment, the transmission shaft 61 includes two short shafts arranged front and rear, and the short shaft at the front end can be referred to as a front shaft portion, and the short shaft at the rear end portion is referred to as a rear shaft portion, and the rear end portion and the rear shaft portion of the front shaft portion are referred to as a rear shaft portion. The front end of the segment is spline-fitted to enable the two to rotate coaxially.

To facilitate the support and guiding positioning when the first power unit 200 and the second power unit 300 are connected, and to limit the relative rotation of the first power unit 200 within the housing body and the relative rotation of the second power unit 300 within the grip housing 12 The upper portion of the support 301 extends into the casing 11, and a guide structure is disposed between the rear end of the support mechanism and the upper portion of the support 301. The specific configuration of the guide structure will be described in detail below.

As shown in FIGS. 11 to 14, the upper motor and the first circuit board 202 are mounted at the rear of the support mechanism, the first circuit board 202 is located above the upper motor, and the three power heads 71, 72, 73 are located in front of the upper motor, and the terminal blocks are provided. The 207 is located above the power head, and the drive shaft 61 is disposed at a lower portion of the support mechanism. The front end of the front shaft section of the drive shaft 61 is coaxially coupled with the power head 72 through the meshing drive gear 205 and the driven gear 206, and the drive shaft is opened at the lower part of the support mechanism. The mounting hole 104, the front shaft section of the transmission shaft 61 can be installed in the transmission shaft mounting hole 104 through the bearing 214, and the rear end of the rear shaft section of the transmission shaft 61 is drivingly connected to the output shaft of the lower motor through the bevel gear pair.

The structure of the support mechanism is as shown in FIG. 17 and FIG. 18, and the support mechanism is provided with a terminal mounting hole 103 and two power head mounting holes 102. The terminal mounting hole 103 is located above the power head mounting hole 102 for mounting the terminal 207. The power head mounting hole 102 is for mounting a power head, and transmits power to the connecting rod through the power head. The rear of the support mechanism is provided with a motor mounting hole 101 for mounting the upper motor, and the motor mounting hole 101 is located behind the corresponding power head mounting hole 102 so that the upper motor is connected to the corresponding power head and transmits power. The power head mounting holes 102 are three arranged side by side, the motor mounting holes 101 are two, and respectively correspond to two power head mounting holes 102, and the upper motor, the power head and the connecting terminal 207 are disposed in the corresponding holes. . Each of the power heads is rotatably mounted in each of the power head mounting holes 102 through bearings 216, and the axial movement of the power head can be restricted by components such as a collar. In this example, the two upper motors are connected to the two outer power heads 71, 73, and the intermediate power head 72 corresponds to the lower motor.

The rear of the support mechanism is disposed above the motor mounting hole 101 with a circuit board mounting position. In this example, the circuit board mounting position is a support platform 107 formed by removing material at the upper end of the support mechanism, and the support platform 107 is provided with multiple The fixing hole 108, the first circuit board 202 is fixed to the support platform 107 by screws 213.

In order to facilitate the arrangement of the gears, a groove 106 for accommodating the driving gear 205 and the driven gear 206 is provided on the supporting mechanism (specifically, the cylindrical section). The drive gear 205 is coupled to the front axle section of the drive shaft 61, the driven gear 206 is coupled to the power shaft of the powerhead 72, and the drive gear 205 and the driven gear 206 constitute a spur gear pair that transmits torque.

The upper motor, the power head, the terminal 207, the first circuit board 202, the front shaft section of the transmission shaft 61 and the like are mounted by the integral supporting mechanism, so that the mounting arrangement of the components on the supporting mechanism is facilitated, and a modular structure is formed, which is convenient for The stapler handle housing is assembled, and the support mechanism can also integrate a connection portion that can be docked with the stapler connecting rod without separately connecting the connecting members. The integrated support structure reduces the number of support mechanisms, which simplifies the installation process, reduces the installation difficulty, and ensures the installation accuracy.

Preferably, the support mechanism comprises a cylindrical section and a cylindrical section integrally connected front and rear, the cylindrical section having a side cutting surface which is substantially parallel to a center line of the cylindrical section, and the side cutting surface forms a support for mounting the first circuit board 202 platform. An arcuate structure may also be provided on the side cut surface of the cylindrical section, the arcuate structure and the side cut surface forming a recess that receives a portion of the first circuit board 202. The upper motor, the power head, the terminal 207 and the first circuit board 202 are mounted on the cylindrical section. The first circuit board 202 and the upper motor are mounted at the rear of the cylindrical section, the first circuit board 202 is located above the upper motor, and the upper motor is positioned on the cylindrical section by a support hole formed in the cylindrical section. The terminal 207 and the power head are mounted on the front part of the cylindrical section, and the power head is positioned on the cylindrical section through a mounting hole formed in the cylindrical section, and each torque output part corresponding to each power head (the first torque output part and the second torque output) The portion is respectively inserted into the inner cavity of the cylindrical section in front, and the power head 71 and the power head 73 are respectively drivingly coupled to the corresponding upper motor. The terminal 207 is located above the power head. The drive shaft mounting hole 104 is disposed in the cylindrical section, and the front shaft section of the drive shaft 61 is passed through the drive shaft mounting hole 104.

A part of the cylindrical section forms a connecting portion, and the connecting portion is provided with a locking hole 111 for mounting the locking steel ball and a limiting hole 112 for mounting the anti-rotation structure, wherein the locking hole 111 is distributed in the circumferential direction, When the power handle is connected with the stapler connecting rod, the locking hole is locked by locking the steel ball, and the limiting hole 112 is preferably used for installing the guiding anti-rotation positioning pin to limit the rotation direction of the connecting rod.

As shown in FIG. 16, a sealing ring 212 is disposed between the front portion of the terminal 207 and the terminal mounting hole, and a sealing ring 211 is disposed between the front portion of each power head and the power head mounting hole to ensure the power head. The sealing between the terminal and the supporting mechanism; a pressing member for pressing the sealing ring 211 and the sealing ring 212 is disposed in front of the sealing ring on the supporting mechanism.

Wherein, the pressing member comprises a pressing cover 210 and a threaded sleeve 209, and the threaded sleeve 209 is screwed with the sleeve portion of the supporting mechanism, and the sealing ring 211 and the sealing ring 212 are directly or indirectly pressed through the pressing cover 210.

Preferably, a seal groove 110 for mounting the seal ring 215 may be provided on the outer peripheral wall of the cylindrical section, and a stopper may be provided on the outer peripheral wall of the cylindrical section, the stopper being used for the cylinder section and the shell body 11 The axial section of the cylinder segment is mounted during installation, the stop member being, for example, a stop flange 109, the seal groove 110 being located behind the stop flange 109.

A sealing ring 215 is disposed between the outer peripheral wall of the supporting mechanism and the inner wall of the shell body 11. The sealing ring 215 is located in the sealing groove 110. The outer peripheral wall of the supporting mechanism is provided with a ring stop flange 109, and the stopping flange 109 abuts against the shell body. The front end 11 defines the movement of the support mechanism in the front-rear direction of the casing body 11.

Before being installed with the shell body 11, the first power unit 200 is assembled to form a unitary structure, which simplifies the installation process of the shell body 11 and the housing body 11, reduces the difficulty of mounting the shell body 11, and realizes the front-rear direction positioning by the stop flange 109. The assembly speed and accuracy are improved, and the sealing effect between the first power unit 200 and the shell body 11 is ensured by the sealing ring; the sealing between the power head and the connecting terminal 207 and the supporting mechanism is combined to prevent water vapor from entering the housing from the front end.

Further, as shown in FIGS. 19 to 21, the second power unit 300 further includes a second circuit board 242 connected to the lower portion of the holder 301 and located at one side of the lower motor. A button assembly mounting hole is defined in the side wall of the holder 301 and the grip portion housing 12. The button assembly 116 is mounted in the mounting hole by a screw penetrating the grip portion housing 12 and the holder 301. The screw on the one hand connects the button assembly 116 to the abutment 301 and on the other hand fixes the abutment 301 to the grip portion housing 12.

The mounting position is provided by the support 301 for the lower motor, the second circuit board 242, the button assembly 116, and the like, and the second circuit board 242, the lower motor, and the like are mounted on the support 301 to form a modular structure, which is convenient for the stapler handle shell. Assembly under the body. This simplifies the installation process, reduces the difficulty of installation, and ensures installation accuracy.

As shown in FIGS. 22 to 25, the support base 301 is vertically or vertically provided with a first mounting hole 302, and the center line of the first mounting hole 302 is preferably parallel or coincident with the center line of the grip portion housing 12. . The lower motor is disposed in the first mounting hole 302 and fastened to the holder 301. The lower portion of the holder 301 is provided with a slot 303, and the second circuit board 242 is disposed in the slot 303. In this example, the first mounting hole 302 is preferably disposed obliquely, and the slot 303 is located at the front side of the first mounting hole 302 so that the second circuit board 242 is loaded into the holder 301 from the lower portion.

A first locking hole 311 is defined in the position of the support 301 corresponding to the slot 303. The upper portion of the second circuit board 242 is inserted into the slot 303 and is locked to the support 301 by screws. Preferably, the second The circuit board 242 is packaged and then loaded into the slot 303 to protect the second circuit board 242. The lower end surface of the support 301 is provided with a second locking hole 312 for locking the lower motor. The lower motor is inserted into the first mounting hole 302 and fastened to the support 301 through the first flange 247 and the screw.

Preferably, the front side and the left and right sides of the holder 301 are provided with attachment holes for mounting the button assembly. Specifically, as shown in FIG. 24, a first connecting hole 306 is defined in the front side corresponding button assembly 116 of the support 301. The inner wall of the first connecting hole 306 is provided with a plurality of ear seats 308, and the first fixing holes are disposed on the ear seat 308. 309, for mounting a button assembly or a corresponding electric board or the like, the ear seat 308 is used for supporting positioning, and the first fixing hole 309 is used for mounting a screw for locking.

A second connecting hole 307 is defined in the left side and/or the right side of the support 301. In this example, the left and right sides are respectively provided with a second connecting hole 307, and the edge of the second connecting hole 307 forms a step of sinking for the button assembly 116. Supporting and positioning, a second fixing hole 310 is disposed on the outer side of the second connecting hole 307 of the support 301 for mounting a screw to lock the button assembly 116.

The rear end of the rear axle section of the transmission shaft 61 is drivingly coupled to the lower motor via a bevel gear pair. The bevel gear pair includes a bevel gear 611 disposed on the rear axle section of the transmission shaft 61 and a bevel gear 612 disposed on the output shaft of the lower motor. The power of the lower motor is transmitted to the bevel gear 611 through the bevel gear 612, thereby driving the corresponding power head 72 to rotate. The lower motor includes a motor and a speed reduction mechanism thereof, and the bevel gear 612 is coupled to the output shaft of the speed reduction mechanism.

The lower power component can be pre-assembled and integrated into the grip portion housing 12 at the lower portion of the housing, and the rear axle portion of the transmission shaft 61 and the bevel gear 611 are both disposed on the support 301 to form an integral part. External output to ensure the stability of the transmission. The bevel gear 611 is horizontally arranged to facilitate the horizontal connection with the input mechanism to transmit torque.

As shown in FIG. 17 and FIG. 22, the upper portion of the support 301 is formed with a protruding portion that projects into the housing body, and the front end surface of the protruding portion and the rear end surface of the cylindrical portion have mutually contacting portions, and the protruding portion is horizontally opened with an axis. The hole 304, the rear shaft section of the transmission shaft 61 is rotatably mounted horizontally in the shaft hole 304 through the bearing 645, and can be axially restrained by the collar.

In order to facilitate positioning and guiding when the support 301 is docked with the support mechanism, the above-mentioned guide structure is disposed between the protrusion and the cylindrical section, and the guide structure is a matching guide post 204 and a guide hole 305, a protrusion and a cylinder section. Corresponding to the column mounting holes 105 and 305, when the protruding portion and the cylindrical portion are butted, the guiding column 204 is installed in the guiding column mounting holes 105 and 305, and the rear shaft portion of the transmission shaft is coupled with the front shaft portion of the transmission shaft. The guide post 204 is parallel to the drive shaft 61, and a guide post 204 can be disposed on one side or both sides of the drive shaft 61. Cooperating with the guiding hole by the guiding post 204, on the one hand, the positioning guiding function, on the other hand, the support 301 can be supported, thereby ensuring the structure of the supporting mechanism and the bearing 301, the front shaft section and the rear axle section of the transmission shaft. Positional relationship, which in turn achieves a stable transmission.

For ease of installation, the end of the guide post 204 can be designed as a truncated cone. The guide post 204 can be circular or flat. In this example, the guide post is mounted on both sides of the drive shaft mounting hole 104 in the lower part of the support mechanism. The hole 105, the guide post 204 is mounted in the guide post mounting hole 105.

Preferably, the upper end surface of the rear portion of the support 301 is mounted with a protective cover 646 through the third locking hole 313, the second flange 648 and the screw, and the protective cover 646 covers the joint between the bevel gear 612 and the bevel gear 611 to protect the two. The combination of the people.

Preferably, a lower limit mechanism for longitudinally or laterally limiting the lower motor and the second circuit board is disposed in the lower portion of the grip portion housing 12. In this example, the limiting mechanism is a supporting block 650. The supporting block 650 is installed in the lower end of the grip portion housing 12 by the locking screw 651, and a sealing ring 652 is disposed between the grip portion and the grip portion housing 12, and the upper end of the supporting block 650 is provided. A groove 653 corresponding to the second circuit board 242 and a circular groove 654 corresponding to the lower end of the lower motor are opened, and the support block 650 acts as a support for the second circuit board 242 and prevents yaw. The lower end of the lower motor extends into the circle. The lower slot 654 prevents the lower motor from oscillating radially, primarily through the circular slot 654.

Preferably, the front end of the shell body 11 is provided with a first loading port, the lower end of the grip portion housing 12 is provided with a second loading port, and the upper portion of the shell body 11 is provided with a window 14 corresponding to the position of the grip portion housing 12, and is correspondingly installed. There is a cover 15, a seal ring is disposed between the cover 15 and the shell body 11, and a battery compartment 13 is disposed behind the first power unit 200 at the rear of the shell body 11, and a battery is mounted in the battery compartment 13.

Modifications or variations of the above-described embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and scope of the invention are still to be covered by the appended claims.

Claims (20)

1. An anastomotic power handle includes a housing, a power mechanism and a battery, the housing comprising a housing body and a grip housing coupled to the housing body, wherein

   The power mechanism includes a first power unit and a second power unit;

   The first power unit is disposed at a middle front portion of the casing body, and the first power unit is configured to drive at least one first torque output portion mounted at a front end of the casing body;

   The second power unit is disposed in the handle housing, and the second power unit is configured to drive at least one second torque output portion mounted on the front end of the shell body through a transmission mechanism;

   The battery is disposed at a rear portion within the casing.
2. The stapler power handle of claim 1 wherein:

   The first torque output portion and the second torque output portion respectively have a rotation axis;

   Each of the axes of rotation is parallel to a centerline of the body; or one of the axes of rotation is substantially coincident with a centerline of the body, and the other axes of rotation are parallel to the body, respectively Center line

   The first power unit includes a first motor and a second motor, an output shaft of the first motor is coupled to a first power shaft, and an output shaft of the second motor is coupled to a second power shaft;

   The first torque output portion is configured as two, the front end of the first power shaft is connected to one of the first torque output portions, and the front end of the second power shaft is connected to another one of the first torque output portions;

   An axis of the first power shaft is substantially coincident with an output shaft axis of the first motor; an axis of the second power shaft is substantially coincident with an output shaft axis of the second motor; each of the first torque output portions The axes of rotation respectively coincide with the axes of the corresponding first power shaft and the axis of the second power shaft.
3. The stapler power handle of claim 2, wherein

   The second power unit includes a third motor, and an output shaft axis of the third motor is parallel or coincident with a center line of the grip portion housing;

   The transmission mechanism includes a transmission shaft located in the housing body, the axis of the transmission shaft being parallel to a center line of the housing body;

   The second torque output portion is configured as one, and a rear end of the second torque output portion is connected to a front end of the third power shaft, and an axis of the third power shaft is parallel or coincident with a center line of the shell body The axis of rotation of the second torque output portion is substantially coincident with the axis of the third power shaft;

   A rear end of the transmission shaft is drivingly coupled to an output shaft of the third motor, and a front end of the transmission shaft is drivingly coupled to the third power shaft.
4. The stapler power handle according to claim 3, wherein a rear end of the drive shaft and an output shaft of the third motor are drivenly connected by a bevel gear pair or by a worm gear pair; and/or A front end of the drive shaft is drivingly coupled to the third power shaft via a spur gear pair.
5. The stapler power handle according to claim 3, wherein the stapler power handle further comprises a support mechanism located inside the body, at least a portion of the shaft of the drive shaft, the first motor, The second motor, the first torque output portion, the first power shaft, the second power shaft, the second torque output portion, and the third power shaft are respectively mounted on the support mechanism.
6. The stapler power handle according to claim 5, wherein the first torque output portion, the first power shaft, the second power shaft, the second torque output portion, the third power shaft, the first motor, and the first The second motor and the drive shaft are integrated on the support mechanism to form an upper power module that can be integrally assembled and disassembled; the handle portion is provided with a positioning mechanism for fixing the third motor, and the output shaft of the third motor is The drive shaft is detachably coupled, and the third motor and the positioning mechanism form a lower power module that can be integrally assembled and disassembled.
7. The stapler power handle according to claim 5, wherein the support mechanism comprises a first bracket and a second bracket arranged in front and rear; the first bracket and the second bracket are correspondingly provided with a plurality of mounting holes, The first power shaft, the second power shaft and the third power shaft are rotatably mounted in the corresponding mounting holes by bearings; the second bracket is provided with a support hole for mounting the first motor and the second motor .
8. The stapler power handle of claim 7 wherein:

   The outer circumference of the first bracket has a circular structure;

   The second bracket includes a first circular support seat and a second circular support seat disposed front and rear, and a support bridge connected between the first circular support seat and the second circular support seat; a bracket is detachably coupled to the first circular support seat, and outer peripheral contours of the first circular support seat and the second circular support seat are in contact with the inner cavity wall of the shell body;

   The mounting hole is defined in the first bracket and the first circular support seat, and the support hole is opened at least on the second circular support base;

   The drive shaft is rotatably supported by the first circular support seat and the second circular support seat.
9. The stapler power handle according to claim 8, wherein a positioning mechanism for fixing the third motor is disposed in the handle housing, the support mechanism and the housing or the A limiting mechanism for restricting circumferential rotation of the supporting mechanism is disposed between the supporting mechanism and the positioning mechanism.
10. The stapler power handle according to claim 9, wherein the support bridge is provided with a limit groove; the positioning mechanism is provided with a limit protrusion adapted to extend into the limit groove, The limiting projection has a second non-rotating section that cooperates with the first non-rotating section.
11. The stapler power handle according to claim 3, wherein said second torque output portion is located between said two first torque output portions, and said first torque output portion and said second torque The output portion is arranged in a linear direction; on a lateral cross section of the case body, a line connecting the center of the output shaft of the first motor, the center of the output shaft of the second motor, and the center of the drive shaft constitutes a triangle.
12. The stapler power handle according to claim 8, wherein the first bracket is provided with a pin interface mounting hole; and/or the circuit board mounting hole is disposed on the support bridge.
13. The stapler power handle according to claim 5, wherein the support mechanism is provided with a plurality of mounting holes and a plurality of support holes, and the first power shaft, the second power shaft and the third power shaft pass The bearing is rotatably mounted in the corresponding mounting hole; the first motor and the second motor are mounted in the corresponding support holes.
14. The stapler power handle according to claim 13, wherein said support mechanism comprises an integral cylindrical section and a cylindrical section, said cylindrical section being located at a front end of said cylindrical section; said mounting hole and said The support holes are respectively disposed in the cylindrical section; the cylindrical section is further provided with a drive shaft mounting hole, the drive shaft passes through the drive shaft mounting hole; the first torque output part and the second torque output part respectively Extending into the lumen of the cylindrical section.
15. The stapler power handle according to claim 14, wherein said cylindrical section has a side cutting surface, said side cutting surface forming a support platform for mounting a first circuit board; and/or said cylinder section The cylinder wall is provided with a locking hole for mounting the locking steel ball and a limiting hole for mounting the anti-rotation structure; and/or the outer peripheral wall of the cylindrical section is provided with a stopper flange.
16. The stapler power handle according to claim 14, wherein a seat and a second circuit board are further mounted in the handle housing, and the second circuit board and the third motor are mounted in the same Said on the support.
17. The stapler power handle according to claim 16, wherein the holder is provided with a slot for mounting the second circuit board; the handle portion housing is provided with a button assembly, The side wall of the slot is provided with a connecting hole corresponding to the position of the button assembly.
18. The stapler power handle according to claim 16, wherein an upper end of the holder is formed with a projection extending into the housing body, a front end face of the projection and a rear of the cylindrical section The end surface has a portion in contact with each other, and the protrusion is provided with a shaft hole through which the transmission shaft passes; a guide post mounting hole is disposed on the protrusion portion and the cylindrical portion, and the guide post is mounted on the guide post A guide post is disposed in the bore, the axis of the guide post being parallel to the axis of the drive shaft.
19. The stapler power handle according to claim 5, wherein the housing, the first power shaft, the second power shaft, the third power shaft, the first torque output portion, the second torque output portion, and the support mechanism And the transmission mechanism is made of metal.
20. The stapler power handle according to claim 1, wherein a front end of the body is provided with a first loading inlet, and a lower end of the handle housing is provided with a second loading inlet, the body of the housing corresponding to The grip portion housing is provided with a window and is mounted with a cover, and the battery is housed in a battery compartment at the rear of the housing.

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