CN112336397B

CN112336397B - Surgical instrument

Info

Publication number: CN112336397B
Application number: CN201910728450.5A
Authority: CN
Inventors: 孙宝峰; 张志星
Original assignee: Fengh Medical Co ltd
Current assignee: Fengh Medical Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2022-05-10
Anticipated expiration: 2039-08-07
Also published as: CN112336397A

Abstract

The invention relates to a surgical instrument, which comprises a power assembly, a driving mechanism and an end effector, wherein the power assembly drives the end effector through the driving mechanism, the power assembly comprises a shell, the driving mechanism comprises a bracket, a first locking mechanism is arranged between the shell and the bracket, the first locking mechanism enables the shell and the bracket to be detachably connected, the first locking mechanism comprises an operating part and a locking part which are connected, and the operating part is arranged on one side of the shell. Because the operation part is arranged on one side of the shell, and other parts are not arranged on one side of the shell basically, the operation part is not easy to be shielded by other parts, the operation part is convenient to touch and install and dismantle the power assembly and the driving mechanism, the accessibility is good, and the replacement is convenient.

Description

Surgical instrument

Technical Field

The invention relates to a surgical instrument, in particular to an anastomat, and belongs to the technical field of surgical instruments.

Background

Surgical instruments typically include a power assembly that drives an end effector via a drive mechanism, and a drive mechanism that performs a corresponding operation to perform a surgical procedure.

The power assembly and the driving mechanism are assembled together through the locking mechanism, and in the prior art, when the power assembly or the driving mechanism is detected to be out of order, the power assembly or the driving mechanism is difficult to disassemble, so that the replacement of the out-of-order parts of the surgical instrument is not facilitated.

Disclosure of Invention

It is an object of the present invention to provide a surgical instrument whose malfunctioning component can be easily replaced.

In order to achieve the above object, the present invention provides a surgical instrument, including a power assembly, a driving mechanism and an end effector, wherein the power assembly drives the end effector through the driving mechanism, the power assembly includes a housing, the driving mechanism includes a bracket, a first locking mechanism is arranged between the housing and the bracket, the first locking mechanism detachably connects the housing and the bracket, the first locking mechanism includes an operating portion and a locking portion which are connected, and the operating portion is arranged on one side of the housing.

Furthermore, the shell is provided with an installation part, the installation part is provided with a through hole, the support is provided with a lock hole matched with the locking part, the locking part penetrates through the through hole to be matched with the lock hole, and the operation part is arranged on one side, far away from the support, of the installation part.

Furthermore, a locking part matched with the locking part is arranged on the through hole.

Further, the first locking mechanism comprises at least three locking pieces, the at least three locking pieces are uniformly arranged at intervals along the circumferential direction, and each locking piece comprises the operating part and the locking part.

Further, the first locking mechanism is moved in a direction of the housing toward the bracket to lock the housing and the bracket.

Further, power component includes motor case and the gear box of transmission connection, the motor case is located the gear box and keeps away from one side of support, the casing is the case shell of gear box, the motor case with gear box detachable connects.

Furthermore, a connecting piece is arranged between the motor box and the gear box and comprises a first connecting part and a second connecting part which are connected, the first connecting part and the gear box are detachably connected through a second locking mechanism, the second connecting part and the motor box are detachably connected through a third locking mechanism, and the moving directions of the second locking mechanism and the third locking mechanism are different.

Further, the first connecting portion extends at least partially into a housing of the gear box, and the second locking mechanism moves radially to lock the gear box and the first connecting portion.

Further, the second connecting portion abuts against an end portion of the motor case, and the third locking mechanism moves axially to lock the second connecting portion and the motor case.

Further, an axially extending through hole is formed in the center of the first connecting portion, and a motor shaft of the motor box passes through the through hole.

Compared with the prior art, the invention has the beneficial effects that: because the operation part is arranged on one side of the shell, and other parts are not arranged on one side of the shell basically, the operation part is not easy to be shielded by other parts, the operation part is convenient to touch and install and dismantle the power assembly and the driving mechanism, the accessibility is good, and the replacement is convenient.

Drawings

FIG. 1 is a front view of a surgical instrument provided in accordance with an embodiment of the present invention, wherein a main housing of the surgical instrument is not shown:

FIG. 2 is a partial schematic structural view of the surgical instrument illustrated in FIG. 1, with the drive mechanism shown primarily in the bracket portion;

FIG. 3 is an exploded perspective view of a portion of the surgical instrument illustrated in FIG. 2;

FIG. 4 is an exploded perspective view from another perspective of the partial construction of the surgical instrument illustrated in FIG. 2;

FIG. 5 is an exploded isometric view of the power assembly of the surgical instrument illustrated in FIG. 2.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

It is to be understood that in the description of the present invention, the terms "anterior", "posterior", "up", "down", and the like are used with reference to the normal use of the surgical device, with "anterior" referring to the direction away from the clinician and "posterior" referring to the direction toward the clinician; the terms "circumferential", "radial" and "axial" are used with reference to the motor shaft. These terms indicating orientation or positional relationship, including but not limited to "forward", "rearward", "up", "down", "circumferential", "radial" and "axial", are merely for convenience of description and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "connecting" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a movable connection, or an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

Referring to FIG. 1, the present embodiment provides a surgical instrument 100 including a power assembly 20, a drive mechanism 22, and an end effector 24, wherein the power assembly 20 drives the end effector 24 via the drive mechanism 22, and the end effector 24 performs a corresponding operation to perform a surgical procedure.

It should be noted that in order to more clearly illustrate the present invention, the main housing of the surgical instrument 100 is hidden in fig. 1, and the main housing can enclose the power assembly 20 and at least a portion of the drive mechanism 22 therein to protect the power assembly 20 and the drive mechanism 22.

In this embodiment, the surgical instrument 100 is a stapler. The power assembly 20 includes a motor case 26 and a gear case 28 drivingly connected thereto. The drive mechanism includes an intermediate member (e.g., a rack gear) driven by the gear box 28, a spindle and a sleeve driven by the intermediate member for linear movement. The end effector 24 includes a cutting blade connected to a mandrel, and further includes a staple cartridge seat 30 and a staple abutting seat 32, the staple abutting seat 32 being movably connected to the cannula, the staple abutting seat 32 being pivotally connected to the staple cartridge seat 20. A motor in the motor housing 26 drives a gear in a gear housing 28 which drives the spindle through an intermediate member in a linear motion to drive the cutting blade to advance or retract, thereby cutting or retracting tissue; the gear drives the sleeve to move back and forth through the intermediate part, so that the nail abutting seat is opened or closed relative to the nail bin seat, and tissues are loosened or clamped.

Referring to fig. 1 and 2, in the present embodiment, the power assembly 20 includes a housing 34, the driving mechanism 22 includes a bracket 36, and a first locking mechanism is disposed between the housing 34 and the bracket 36, and the first locking mechanism detachably connects the housing 34 and the bracket 36.

The housing 34 is adapted to house and support other components of the power module 20, the bracket 36 is adapted to house and support other components of the drive mechanism 22, and the first locking mechanism releasably couples the housing 34 to the bracket 36 to releasably couple the power module 20 to the drive mechanism 22. Therefore, when any one of the power assembly 20 and the driving mechanism 22 has a fault, the power assembly 20 and the driving mechanism 22 can be detached and separated, and the replacement is convenient.

It should be noted that, with reference to fig. 2 and 3, when the housing 34 and the bracket 36 are used to cover and support other components, the other components are substantially located within the receiving range of the housing 34 and the bracket 36, but it is not excluded that the respective components extend out of the receiving range of the housing 34 and the bracket 36. For example, the final gear 44 of the gear box 28 extends outside of the housing 34 for driving connection with the drive mechanism.

In the present embodiment, it is preferable that the first locking mechanism includes an operation portion 40 and a locking portion 42 connected, and the operation portion 40 is provided on the housing 34 side.

Since the housing 34 is substantially enclosed, no other components are generally visible except for the final gear 44; the holder 36 is in an open state to facilitate mounting, observation, and replacement of other parts of the drive mechanism, and if the operation portion 40 is provided on the holder 36 side, the operation portion 40 is easily hidden by other parts of the drive mechanism 22, the accessibility is poor, and the housing 34 and the holder 36 are not easily detachable.

In the present embodiment, since the operating portion 40 is disposed on one side of the housing 34, and there is substantially no other component on one side of the housing 34, the operating portion 40 is not easily shielded by other components, so that the operating portion 40 can be easily accessed to install and remove the power assembly 20 and the driving mechanism 22, and the accessibility is good, and the replacement is convenient.

It should be noted that, since the housing 34 and the bracket 36 are detachably connected, the housing 34 necessarily has a surface 46 closest to the bracket 36, and the operation portion 40 is disposed on the side of the housing 34, which means that the operation portion 40 is located on the side of the surface 46 away from the bracket 36. In the present embodiment, the surface 46 of the housing 34 closest to the bracket 36 is the top surface of the housing 34, and the operation portion 40 is provided on the lower side of the top surface of the housing 34. The surface 46 of the housing 34 closest to the bracket 36 may be a flat surface, or may be other regular or irregular surfaces 46, and any arrangement similar or identical to that of the present embodiment is within the scope of the present invention.

Preferably, the first locking mechanism is moved in a direction of the housing 34 toward the bracket 36 to lock the housing 34 and the bracket 36. This facilitates the operator to exert force on the operation portion 40, and the operation is easy and labor-saving.

In the present embodiment, it is preferable that the housing 34 is provided with the mounting piece 48, the mounting piece 48 is provided with the first through hole 50, the bracket 36 is provided with the first locking hole 52 engaged with the locking portion 42, the locking portion 42 is engaged with the first locking hole 52 through the first through hole 50, and the operating portion 40 is located on a side of the mounting piece 48 away from the bracket 36.

Since the first through hole 50 has a certain length, so that the mounting member 48 has a certain thickness, the operation portion 40 is located on the side of the mounting member 48 away from the bracket 36, and the operation portion 40 is spaced apart from the bracket 36 by the mounting member 48, so that the distance between the operation portion 40 and the bracket 36 can be ensured, thereby preventing the operation portion 40 from being shielded by the components mounted on the bracket 36, and facilitating the operator to access the operation portion 40 to operate the locking mechanism.

Preferably, the housing 34 includes a main body 49, and the mounting member 48 is connected to the main body 4, and the mounting member 48 protrudes from an outer surface of the main body 49.

The mounting member 48 projects from an outer surface of the main body 49, and the operating portion 40 is located at an end of the mounting member 48 remote from the bracket 36, such that the operating portion 40 projects from the outer surface of the main body 49, thereby providing an operator with more convenient access to the operating portion 40 for locking or unlocking the power assembly 20 and the drive mechanism 22 relative to each other.

In the present embodiment, the mounting member 48 is provided integrally with the main body 49. Simple structure and convenient manufacture.

Preferably, the first through hole 50 is provided with a locking portion (not shown) engaged with the locking portion 42.

Therefore, during installation, the locking portion 42 is locked with the locking portion of the first through hole 50 of the mounting member 48 and then locked with the first locking hole 52 of the bracket 36, so that the locking is more effective.

In the present embodiment, the first locking mechanism preferably includes the first locking member 54, the first locking member 54 is a screw, the operating portion 40 is a nut, the locking portion 42 is a screw, the locking portion on the first through hole 50 is a thread, and the first locking hole 52 of the bracket 36 is also provided with a thread, so that the locking is more reliable. It will be appreciated by those skilled in the art that other types of locking elements are also contemplated and are within the scope of the present invention, and that the same or similar embodiments are contemplated.

When the housing 34 and the bracket 36 are installed, the housing 34 may be fixed relative to the bracket 36 by tightening a screw axially upward, i.e., in a direction in which the housing 34 faces the bracket 36. Upon removal, the housing 34 is removed from the bracket 36 by loosening the screw axially downward to disengage the first lock aperture 52.

In the present embodiment, the first locking mechanism preferably includes at least three first locking members 54, and the at least three first locking members 54 are uniformly spaced in the circumferential direction. Specifically, the first locking mechanism comprises at least three screws which are circumferentially and uniformly arranged at intervals.

The at least three locking members are circumferentially and uniformly spaced, which enables the locking force exerted by the locking members on the housing 34 and the bracket 36 to be more uniformly distributed, thereby ensuring stable connection between the power assembly and the drive mechanism and improving the stability of the surgical instrument in use.

In the present embodiment, the number of the first locking members 54 is three, and the number of the mounting pieces 48 and the number of the first locking holes 52 are the same as the number of the first locking members 54. It will be appreciated by those skilled in the art that the number of the first locking members 54, the mounting members 48, and the first locking holes 52 can be other integers greater than three, and all the embodiments similar to or the same as the embodiments are within the scope of the present invention.

As previously mentioned, the power assembly 20 includes a motor case 26 and a gear case 28 drivingly connected thereto. In this embodiment, the motor housing 26 is located on a side of the gear housing 28 away from the bracket 36, the housing 34 is a housing 70 of the gear housing 28, and the housing 70 of the gear housing 28 is detachably connected to the bracket 36 of the driving mechanism 22 by a first locking mechanism. The arrangement is rational and a smaller size lock can be used to lock the housing 34 of the power tool and the bracket 36 of the drive mechanism 22.

It is understood that the motor box 26 houses a motor, which in this embodiment is an electric motor, but those skilled in the art will recognize that other motors are possible.

Referring to fig. 4 and 5, in the present embodiment, preferably, a connection member 56 is provided between the motor casing 26 and the gear casing 28, and the motor casing 26 and the gear casing 28 are detachably connected by the connection member 56.

The motor case 26 and the gear case 28 are detachably connected by a connecting member 56, so that the motor case 26 and the gear case 28 can be easily detached and separated to facilitate replacement when any one of the motor case 26 and the gear case 28 fails.

In summary, in the present embodiment, the gear box 28 and the driving mechanism are detachably connected, and the motor box 26 and the gear box 28 are detachably connected by the connecting member 56, so that when any one of the three components fails, it can be easily detached to facilitate subsequent replacement.

With continued reference to fig. 4 and 5, in the present embodiment, the connecting member 56 includes a first connecting portion 58 and a second connecting portion 60 connected together, the first connecting portion 58 is detachably connected to the gear box 28 by a second locking mechanism, and the second connecting portion 60 is detachably connected to the motor box 26 by a third locking mechanism.

In the present embodiment, the second locking mechanism and the third locking mechanism preferably have different moving directions, so that the space can be more fully utilized, and the locking and detaching operations can be facilitated.

In the present embodiment, the first connection portion 58 has a cylindrical shape, and the second connection portion 60 has a disk shape. The diameter of the first connection portion 58 is smaller than that of the second connection portion 60, and the height of the first connection portion 58 is greater than that of the second connection portion 60. The first connecting portion 58 extends axially from a side surface of the second connecting portion 60 near the gear case 28.

Preferably, the first coupling portion 58 extends at least partially into the housing 70 of the gear housing 28, and the second locking mechanism is radially movable to lock the first coupling portion 58 to the gear housing 28.

The second locking mechanism includes at least two second locking pieces 66 arranged uniformly in the circumferential direction. In the present embodiment, the second locking member 66 is a screw. It will be appreciated by those skilled in the art that other types of locking elements are also contemplated and are within the scope of the present invention, and that the same or similar embodiments are contemplated.

Specifically, the housing 70 of the gear box 28 is provided with at least two second through holes 68, the second through holes 68 extend in the radial direction, the at least two second through holes 68 are uniformly arranged at intervals in the circumferential direction, and the second through holes 68 are provided with threads matched with the second locking members 66. The first connecting portion 58 is provided with at least two second locking holes 74, the second locking holes 74 extend in the radial direction, the number of the second locking holes 74 is the same as that of the second through holes 68, the at least two second locking holes 74 are uniformly arranged at intervals in the circumferential direction, and the second locking holes 74 are provided with threads matched with the second locking pieces 66. When the first connecting portion 58 is locked with the housing 70 of the gear case 28, the second locking member 66 is radially tightened, so that the second locking member 66 is in turn threadedly engaged with the second through hole 68 and the second locking hole 74. When the locking member is removed, the second locking member 66 is unscrewed in the radial direction to be separated from the second locking hole 74, which is not described in detail.

In the present embodiment, the number of the second locking members 66, the second through holes 68, and the second locking holes 74 is four, and those skilled in the art can understand that the number of the second locking members 66, the second through holes 68, and the second locking holes 74 can be other integers greater than or equal to two, and all the embodiments that are the same as or similar to the present embodiment are covered in the protection scope of the present invention.

In the present embodiment, preferably, the second connecting portion 60 abuts on the end surface 76 of the motor case 26, and the third locking mechanism axially moves to lock the second connecting portion 60 and the motor case 26.

Specifically, the third locking mechanism includes at least two third locking members 78 uniformly arranged along the circumferential direction, and in this embodiment, the third locking members 78 are screws. It will be appreciated by those skilled in the art that other types of locking elements are also contemplated and are within the scope of the present invention, and that the same or similar embodiments are contemplated.

The second connecting portion 60 is provided with at least two third through holes 80 which are uniformly arranged in the circumferential direction, and the third through holes 80 are provided with threads matched with the third locking member 78. At least two third locking holes 82 are formed in the shell of the motor box 26, the number of the third locking holes 82 is the same as that of the third through holes 80, the at least two third locking holes 82 are circumferentially and uniformly arranged at intervals, and the third locking holes 82 are provided with threads matched with the third locking pieces 78. When the second connecting portion 60 is locked to the motor case 26, the third locking member 78 is axially screwed, and the third locking member 78 is screwed into the third through hole 80 and the third locking hole 82 in turn to be threadedly engaged therewith. When the locking member is detached, the third locking member 78 is unscrewed in the axial direction to be separated from the third locking hole 82, and the details are not repeated.

In the present embodiment, the number of the third locking element 78, the third through hole 80, and the third locking hole 82 is two, and those skilled in the art can understand that the number of the third locking element 78, the third through hole 80, and the third locking hole 82 can be other integers greater than two, and all the schemes that are the same as or similar to the present embodiment are covered in the protection scope of the present invention.

In the present embodiment, a through hole 84 extending in the axial direction is provided in the center of the first connecting portion 58, and a motor shaft 86 extends into the housing 70 of the gear case 28 through the through hole 84 to be engaged with the gears therein. The space of the first connecting part 58 is fully utilized, and the structural layout is reasonable.

In summary, in the present embodiment, the power assembly and the driving mechanism of the surgical instrument are detachably connected by the first locking mechanism provided between the housing and the bracket, and the gear box and the motor box of the power assembly are detachably connected by the connecting member. Therefore, when any one of the driving mechanism, the gear box and the motor box breaks down, the driving mechanism, the gear box and the motor box can be detached to be conveniently replaced. Preferably, the operating part of the first locking mechanism is arranged on one side of the shell, so that the accessibility is good, and the driving mechanism and the gear box are very convenient to disassemble. Furthermore, the connecting piece includes first connecting portion and the second connecting portion that links to each other, and first connecting portion and gear box pass through second locking mechanical system detachable connection, and second connecting portion and motor box pass through third locking mechanical system detachable connection, and second locking mechanical system and third locking mechanical system's direction of motion are different. The structural layout is very reasonable, and the disassembly between the gear box and the motor box is very convenient.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A surgical instrument comprising a power assembly, a drive mechanism, and an end effector, the power assembly driving the end effector via the drive mechanism, wherein: the power assembly comprises a shell, the driving mechanism comprises a bracket, a first locking mechanism is arranged between the shell and the bracket, the shell and the bracket are detachably connected through the first locking mechanism, the first locking mechanism comprises an operating part and a locking part which are connected, and the operating part is arranged on one side of the shell; the shell is provided with an installation part, the installation part is provided with a through hole, the support is provided with a lock hole matched with the locking part, the locking part penetrates through the through hole to be matched with the lock hole, and the operation part is arranged on one side, far away from the support, of the installation part.

2. The surgical instrument of claim 1, wherein: and a locking part matched with the locking part is arranged on the through hole.

3. The surgical instrument of claim 1, wherein: the first locking mechanism comprises at least three locking pieces which are uniformly arranged at intervals along the circumferential direction, and each locking piece comprises the operating part and the locking part.

4. The surgical instrument of claim 1, wherein: the first locking mechanism is moved in a direction of the housing toward the bracket to lock the housing and the bracket.

5. The surgical instrument of claim 1, wherein: the power assembly comprises a motor box and a gear box which are in transmission connection, the motor box is located on one side, away from the support, of the gear box, the shell is the box shell of the gear box, and the motor box is detachably connected with the gear box.

6. The surgical instrument of claim 5, wherein: the motor case with be equipped with the connecting piece between the gear box, the connecting piece includes first connecting portion and the second connecting portion that link to each other, first connecting portion with the gear box passes through second locking mechanical system detachable and connects, the second connecting portion with the motor case passes through third locking mechanical system detachable and connects, second locking mechanical system with third locking mechanical system's direction of motion is different.

7. The surgical instrument of claim 6, wherein: the first connecting part at least partially extends into the shell of the gear box, and the second locking mechanism moves radially to lock the gear box and the first connecting part.

8. The surgical instrument of claim 6, wherein: the second connecting portion abuts against an end portion of the motor case, and the third locking mechanism moves axially to lock the second connecting portion and the motor case.

9. The surgical instrument of claim 6, wherein: the center of the first connecting part is provided with an axially extending through hole for a motor shaft of the motor box to pass through.