CN216984968U - Modifiable drive for laparoscopic surgical instrument - Google Patents

Abstract

A changeable driving piece of an endoscopic surgical instrument adopts the technical characteristics that the opening directions of a first mounting groove and a second mounting groove form an angle with each other; the technical characteristic that a first type of replaceable embedding groove is formed when the first mounting groove and the embedding groove of the first type of driving head are positioned at the position where the first mounting groove and the embedding groove are aligned with each other is adopted; the technical characteristic that a second type of replaceable embedding groove is formed when the second mounting groove and the embedding groove of the second type of driving head are positioned at the position where the second mounting groove and the embedding groove are aligned with each other is adopted; the technical scheme that the opening and closing direction between the second execution piece and the first execution piece in the first replaceable mosaic connection and the opening and closing direction between the second execution piece and the first execution piece in the second replaceable mosaic connection form an angle is achieved.

Description

Modifiable drive for laparoscopic surgical instrument

Technical Field

The present invention relates to drivers for various laparoscopic surgical instruments, and more particularly to a modifiable driver for a laparoscopic surgical instrument with planar articulation.

Background

In laparoscopic and thoracoscopic surgery, various endoscopic surgical instruments are commonly used for clamping, cutting, injecting, cutting, suturing, and anastomosis operations in the abdominal cavity, the thoracic cavity, and the urogenital system, which can reduce surgical trauma, shorten the operation time, and improve the operation quality. The endoscopic cutting staplers, endoscopic surgical clamps, endoscopic surgical cutting pliers, endoscopic surgical fan-shaped pliers, endoscopic surgical clip appliers, endoscopic surgical scissors, endoscopic surgical cutting knives and other various endoscopic surgical instruments described in U.S. Pat. nos. US20140014707a1, US20170150961a1, US20180049763a1, US20180078248a1, US20180116675a1, US20180126504a1 and US20180333185a1, which are composed of: the system comprises an execution component, an operation component and an extension component. The extension assembly may or may not have a joint assembly thereon. The extension component connects the operation component and the execution component. The execution component is provided with an execution piece. The executive component comprises an executive component I and an executive component II. The operating assembly is provided with a driving part. The driving piece controls the opening and closing of the second execution piece and the first execution piece. The executive component can be a nail anvil and a nail bin, and can also be a knife, a clamp, a cutting clamp, a fan-shaped clamp, a clip applier, a suture rod, a shear, a clamp or other various executive components used for the endoscopic surgery so as to meet the requirements of various purposes of the endoscopic surgery. The various operating elements can be either manual operating elements, such as US20140014707a1 and US20180078248a1, or electric operating elements, such as US20170150961a1 and US20180126504a1, or operating elements of a surgical robot.

Disclosure of Invention

The invention provides a changeable driving piece of an endoscopic surgical instrument, which adopts the technical characteristics that the opening directions of a first mounting groove and a second mounting groove form an angle with each other; the technical characteristic that a first type of replaceable embedding groove is formed when the first mounting groove and the embedding groove of the first type of driving head are positioned at the position where the first mounting groove and the embedding groove are aligned with each other is adopted; the technical characteristic that a second type of replaceable embedding groove is formed when the second mounting groove and the embedding groove of the second type of driving head are positioned at the position where the second mounting groove and the embedding groove are aligned with each other is adopted; the technical scheme that the opening and closing direction between the second execution piece and the first execution piece in the first replaceable mosaic connection and the opening and closing direction between the second execution piece and the first execution piece in the second replaceable mosaic connection form an angle is achieved. Because the endoscopic surgical instrument with the plane joint component can form various actuating components in opening and closing directions which form various angles with each other by replacing the endoscopic surgical instrument with the plane joint component in a first replaceable embedded connection mode or a second replaceable embedded connection mode, the endoscopic surgical instrument with the plane joint component can achieve the technical effect of three-dimensional joint rotation; because the tissue can be clamped in more directions and parts, the stripping and the traction of the tissue to be operated are reduced, thereby achieving the technical effects of increasing the operation range of the endoscopic surgical instrument, avoiding additional damage to the human body and being beneficial to the tissue recovery function at the operation position.

A second object of the invention is to propose a modifiable driving member for laparoscopic surgical instruments, adopting the technical characteristics of forming a replaceable embedding slot when the mounting slot and the embedding slot are positioned in mutual alignment; the technical characteristic that the replaceable mosaic block is formed when the mounting block and the mosaic block are positioned at the position aligned with each other is adopted; technical features are employed to form the replaceable mosaic connection when the replaceable mosaic tile is inserted into the replaceable mosaic slot. When the replaceable embedding groove is inserted into the replaceable embedding block to form replaceable embedding connection, the driving piece moves forwards to prevent the installation block from moving out of the installation groove and prevent the embedding block from moving out of the embedding groove, and meanwhile, the execution piece is installed on the execution piece seat and the driving head is installed on the driving rod; the driving piece moves backwards to align the position of the replaceable embedding groove with the position of the replaceable embedding block, and the executing piece is moved out of the executing piece seat and the driving head is moved out of the driving rod; the technical effects that the first executing part, the second executing part and the driving head with various specifications can be replaced, and the executing parts of other various endoscopic surgical instruments can be replaced are achieved; the technical effects of simple, convenient, quick and safe replacement process are achieved; the technical effects of greatly reducing the cost of the endoscopic surgery and meeting the requirements of various purposes of the endoscopic surgery are achieved.

The purpose of the invention is realized by the following technical scheme:

the laparoscopic surgical instrument of the present invention includes an actuation assembly, an extension assembly, and an operating assembly. The extension component connects the operation component and the execution component. The extension component is provided with a plane joint component. The execution component is provided with an execution piece. The executive component comprises an executive component I and an executive component II. The operating assembly is provided with a driving part. The driving piece controls the opening and closing of the second execution piece and the first execution piece.

The driving part is provided with a driving rod and a driving head. The drive rod is provided with an insert block. The driving head is provided with a connecting block and a driving block. The connecting block is provided with a first embedding groove, a first embedding block and a second embedding block. The first mosaic block and the second mosaic block form an angle with each other. The driving block is provided with a second embedding groove. When the first mosaic block of the connecting block is inserted into the second mosaic groove of the driving block, the first driving head is formed. When the second mosaic block of the connecting block is inserted into the second mosaic groove of the driving block, a second driving head is formed. The drive rod and the first drive head are connected in an embedded manner by inserting the embedded block into the first embedded groove to form the first drive head. The driving rod and the second driving head are inserted into the first embedding groove by the embedding block to form the second driving head to be embedded and connected.

The actuator assembly of the present invention may have an actuator seat therein. The actuator seat is provided with a mounting block. The execution piece is provided with a first mounting groove with an opening, a second mounting groove with an opening, a first sliding groove in the front-back direction and a second sliding groove in the front-back direction. The opening directions of the first mounting groove and the second mounting groove form an angle with each other. The installation block of the execution piece seat is inserted into the first installation groove of the execution piece to form the first type of execution piece embedded connection. The installation block of the execution piece seat is inserted into the second installation groove of the execution piece to form second type of execution piece embedding connection. The first sliding groove and the second sliding groove form an angle with each other. The first driving head can move back and forth in the first sliding groove. The second driving head can move back and forth in the first sliding chute and the second sliding chute.

The position of the first type of execution piece embedded connection is aligned with the position of the first type of driving head embedded connection to form a first type of replaceable embedded connection. The position of the second type of execution piece embedded connection is aligned with the position of the second type of driving head embedded connection to form a second type of replaceable embedded connection. The opening and closing direction between the second execution part and the first execution part in the first replaceable mosaic connection and the opening and closing direction between the second execution part and the first execution part in the second replaceable mosaic connection form an angle with each other.

The actuator seat may have a seat slide slot in a forward and rearward direction. The driving rod is arranged in the seat sliding groove. When the mounting block of the actuator seat and the mosaic block of the driving rod are positioned at the position aligned with each other, a replaceable mosaic block is formed. When the first installation groove of the execution piece and the first embedding groove of the first type of driving head are positioned at the position aligned with each other, a first type of replaceable embedding groove is formed. When the second mounting groove of the actuating member and the first embedding groove of the second type driving head are positioned at the position aligned with each other, a second type replaceable embedding groove is formed. When the replaceable mosaic block is inserted into the first replaceable mosaic groove, a first replaceable mosaic connection is formed. When the replaceable mosaic block is inserted into the second replaceable mosaic slot, a second replaceable mosaic connection is formed.

The actuating member may have a resilient locating member therein. The driving head is provided with a first positioning hole and a second positioning hole. When the first mounting groove of the execution piece and the first embedding groove of the driving head are positioned at the position mutually aligned, the elastic positioning piece is bounced into the first positioning hole, the driving head is positioned in the execution piece, and a first replaceable embedding groove is formed. When the first replaceable embedding connection is formed, the driving piece moves forwards, so that the elastic positioning piece is separated from the first positioning hole and then bounces into the second positioning hole; at this time, the driving member blocks the replaceable insert from being removed from the first replaceable insert groove.

When the second mounting groove of the execution piece and the first embedding groove of the driving head are positioned at the position mutually aligned, the elastic positioning piece is bounced into the first positioning hole, the driving head is positioned in the execution piece, and a second replaceable embedding groove is formed. When the second replaceable embedding connection is formed, the driving piece moves forwards, so that the elastic positioning piece is separated from the first positioning hole and then bounces into the second positioning hole; at this time, the driving member blocks the replaceable insert from being removed from the second replaceable insert groove.

Drawings

FIG. 1 is a reduced external view of an endoscopic surgical instrument illustrating the present invention;

FIG. 2 is an external view of the actuator assembly and actuator of FIG. 1 in an open position;

FIG. 3 is an external view of the actuator seat and the drive rod of the actuator assembly of FIG. 2 formed as a replaceable mosaic;

FIG. 4 is an external view showing the actuator of FIG. 2;

FIG. 5 is an external view showing another side of the actuator of FIG. 4;

FIG. 6 is an exterior view of the actuator and drive head of the actuator assembly of FIG. 2 illustrating the formation of a first type of replaceable insert slot;

FIG. 7 is an external view showing a second actuator of FIG. 2;

FIG. 8 is an external view showing a first actuator of FIG. 2;

FIG. 9 is an external view showing another side of the first actuator of FIG. 8;

FIG. 10 is an external view of the first actuator of FIG. 8 with parts removed;

FIG. 11 is an external view showing the driving member of FIG. 2;

FIG. 12 is an enlarged front view of the resilient positioning element of FIG. 11;

FIG. 13 is a front view showing the drive rod in the drive member of FIG. 11;

fig. 14 is an external view showing a first drive head in the drive member of fig. 11;

fig. 15 is an external view showing a connecting block in the driving head of fig. 14;

fig. 16 is an external view showing a driving block in the driving head of fig. 14;

FIG. 17 is an exterior view of the driving member of FIG. 11 illustrating the formation of a first replaceable insert connection;

FIG. 18 is an elevation view of the actuator assembly of FIG. 2 shown closed;

FIG. 19 is an elevational view of the implement assembly of FIG. 2 shown being fired;

FIG. 20 is an elevational view of the first drive head portion of the implement of FIG. 4 shown extending from the implement;

FIG. 21 is an external view showing the actuator of FIG. 20 after the first drive head has been changed to the second drive head;

FIG. 22 is an exterior view of the actuator and drive head of the actuator assembly of FIG. 2 illustrating the formation of a second replaceable insert pocket;

FIG. 23 is an external view of the actuator and the driving member illustrating the formation of a second interchangeable insert connection;

FIG. 24 is an external view of the driving member in forming a second replaceable insert connection;

FIG. 25 is an enlarged external view of the staple and staple pusher block of FIG. 18;

FIG. 26 is an external view showing another side of the staple and staple pusher block of FIG. 25;

fig. 27 is an enlarged front view showing the B-shaped staple of fig. 19.

Detailed Description

Preferred embodiments of the modifiable drive of an endoscopic surgical instrument of the present invention are set forth below, by way of example, in conjunction with the accompanying drawings. It is to be understood that some or all of the figures are diagrammatic illustrations for purposes of illustrating a preferred embodiment of the invention and do not depict the actual dimensions of the portions shown. The embodiments that achieve the above and other objects and advantages of the present invention will be more clearly understood by reference to the detailed description of the preferred embodiments. In the drawings and the following description, the term "posterior" refers to a location proximal to the operator of the laparoscopic surgical instrument, while the term "anterior" refers to a location distal to the operator of the laparoscopic surgical instrument; the term "upper" refers to above the operator of the laparoscopic surgical instrument, while the term "lower" refers to below the operator of the laparoscopic surgical instrument; the term "left" refers to the left of an operator of an endoscopic surgical instrument, while the term "right" refers to the right of an operator of an endoscopic surgical instrument. Other positional and orientational terms may be understood in light of the drawings and the following description. To highlight the drawings and the description of the modifiable drive member and related components of the laparoscopic surgical instrument of the present invention, other components are not described in detail in the drawings. Reference is made to the relevant literature regarding the construction, mounting, use and course of action of the components of various endoscopic surgical instruments.

As shown in FIG. 1, an endoscopic surgical instrument 1 includes an implement assembly 2, anextension assembly 3, and a handle assembly 4. Theextension assembly 3 connects the operation assembly 4 and the execution assembly 2. Theextension component 3 is provided with ajoint component 5 for plane joint rotation. The actuating assembly 2 has an actuatingmember 17. Thefirst actuator 6 and thesecond actuator 7 are provided in the actuator 17 (see fig. 1 and 2). The two executingparts 7 are alternately provided with three adjacent rows of concave forming grooves 8 (see figure 7). Three adjacent rows ofnail storage holes 9 are staggered on the first actuating part 6 (see figure 4). Staple storage holes 9 are provided withstaples 10 and staple pusher blocks 11 (see fig. 10).Staple 10 is mounted on top of pusher block 11 (see fig. 25 and 26). When tissue is clamped betweenfirst actuator 6 and second actuator 7 (see fig. 18), formingslots 8 onsecond actuator 7 correspond in position withstaples 10 infirst actuator 6.

The actuator assembly 2 has anactuator 17 and an actuator seat 18 (see fig. 2). Theactuator seat 18 has a mountingblock 19 and a seat slide slot 20 (see fig. 3) in the forward and rearward direction. The actuatingmember 17 has an open first mountinggroove 21, an open second mountinggroove 22, a front-rearfirst slide groove 23, a front-rearsecond slide groove 24, an actuating member one 6, an actuating member two 7, and an elastic positioning member 25 (see fig. 4 to 7 and 12). The opening directions of the first mountinggroove 21 and the second mountinggroove 22 are at an angle to each other. Thefirst runner 23 and thesecond runner 24 are positioned at an angle to each other. Theactuator seat 18 and theactuator 17 are connected by inserting the mountingblock 19 into the first mountinggroove 21 of the opening to form a first type of actuator insert connection. In the operating assembly 4 there is a drive member 26 (see fig. 2 and 11). The drivingmember 26 includes a drivingrod 27 and a first driving head 28 (see fig. 11 and 17). The first type of drivinghead 28 has a connectingblock 29, a drivingblock 30, afirst positioning hole 31 and a second positioning hole 32 (see fig. 14). The connectingblock 29 has afirst insert groove 33, afirst insert 34 and a second insert 35 (see fig. 15). Thefirst mosaic 34 and thesecond mosaic 35 are angled with respect to each other. The drivingblock 30 is provided with a second insert groove 36 (see fig. 16). The first type of drivinghead 28 is constructed when thefirst mosaic 34 of thejoint block 29 is inserted into thesecond mosaic 36 of the driving block 30 (see fig. 14). The first type of drivinghead 28 can move back and forth within the first slide groove 23 (see fig. 5 and 7). Driverod 27 has an insert 37 (see fig. 13). Driverod 27 is mounted within seat slide channel 20 (see fig. 3). Thedrive rod 27 and thefirst drive head 28 are connected by inserting themosaic block 37 into the firstmosaic slot 33 to form a first drive head mosaic connection (see fig. 11 and 17). The position of the first type of execution piece embedded connection is aligned with the position of the first type of driving head embedded connection to form a first type of replaceable embedded connection. When the first mountinggroove 21 and thefirst insert groove 33 are positioned in alignment with each other, theelastic positioning member 25 is inserted into thefirst positioning hole 31 to position the firsttype driving head 28 in theactuator 17, thereby forming a first type replaceable insert groove 38 (see fig. 6 and 17). When the mountingblock 19 and themosaic block 37 are located at positions aligned with each other, a replaceablemosaic block 39 is formed (see fig. 3). When thereplaceable insert 39 is inserted into the firstreplaceable insert groove 38, a first replaceable insert coupling is formed.

During the simultaneous mounting of the actuator 17 on the actuator seat 18 and of the first drive head 28 on the drive rod 27: first, a first replaceable insert pocket 38 is inserted into a replaceable insert block 39 to form a first replaceable insert connection; at this time, the actuator seat 18 and the actuator 17 are inserted into the first mounting groove 21 by the mounting block 19 to form a first type of actuator embedding connection, and the driving rod 27 and the first type of driving head 28 are inserted into the first embedding groove 33 by the embedding block 37 to form a first type of driving head embedding connection; secondly, the driving member 26 moves along the seat sliding groove 20 and the first sliding groove 23, so that the elastic positioning member 25 is separated from the first positioning hole 31 and then bounced into the second positioning hole 32 (see fig. 11 and 14), the first driving head 28 is positioned at the installation position of the actuating member 17, and the driving member 26 blocks the installation block 19 from moving out of the first installation groove 21, and the actuating member 17 is installed on the actuating member seat 18 (see fig. 2 and 5); at the same time, first runner 23 blocks insert 37 from moving out of first insert 33, and first drive head 28 is mounted on drive rod 27. During simultaneous removal of actuator 17 from actuator seat 18 and first drive head 28 from drive rod 27: firstly, the driving member 26 moves along the first sliding slot 23 and the seat sliding slot 20, so that the elastic positioning member 25 is separated from the second positioning hole 32 and then springs into the first positioning hole 31 (see fig. 17), and the position of the first type of execution member embedded connection is aligned with the position of the first type of driving head embedded connection to form a first type of replaceable embedded connection position; a second step of removing the first interchangeable insert pocket 38 from the first interchangeable insert connection, i.e. simultaneously removing the actuator 17 from the actuator seat 18 and the first drive head 28 from the drive rod 27; in this case, the first actuator 6 and the second actuator 7 in the actuator 17 can be selected and the first driving head 28 can be selected; therefore, the technical effects that the first actuating part 6, the second actuating part 7 and the first driving head 28 with various specifications can be replaced, and the actuating parts of other various endoscopic surgical instruments can be replaced are achieved; the technical effects of simple, convenient, quick and safe replacement process are achieved; the technical effects of greatly reducing the cost of the endoscopic surgery and meeting the requirements of various purposes of the endoscopic surgery are achieved.

Within implement 17 arecartridge mounting block 40, opencartridge mounting slot 41 and open constraining slot 42 (see FIGS. 7-9). Thefirst slide channel 23 has a forward and rearwardanvil slide channel 43 and a forward and rearward cartridge slide channel 44 (see FIGS. 5 and 7). Thefirst drive head 28 has anupper beam 45 and a lower beam 46 (see fig. 14). Theupper beam 45 of thefirst drive head 28 is located at the upper plane of theanvil chute 43. Thelower beam 46 of the first type ofdrive head 28 is located at the lower plane of theanvil chute 43 and at the opening of the restraint slot 42 (see fig. 5, 7 and 14). Thefirst actuator 6 has arestraint block 47 at the rear (see fig. 9). The second executingpart 7 and the first executingpart 6 are rotatably supported by inserting thecartridge mounting block 40 into thecartridge mounting groove 41. As thefirst drive head 28 of thedriver 26 moves forward along theanvil chute 43, thelower beam 46 of thefirst drive head 28 is inserted at the lower plane of thecartridge chute 44, and theupper beam 45 and thelower beam 46 of thefirst drive head 28 cause the pivoting closure between thesecond actuator 7 and thefirst actuator 6 about the pivoting support of the first actuator 17 (see FIG. 18). As thefirst drive head 28 of thedrive member 26 continues to move forward along theanvil runner 43 and thecartridge runner 44, thedrive member 26 pushes thestaple pusher 11 upward within thestaple storage hole 9, so that thestaple pusher 11 pushes thestaples 10 through the tissue against the formingslot 8, bending thestaples 10 into B-shaped staples 50 (see fig. 19 and 27).

When thefirst drive head 28 of thedriver 26 is moved rearwardly along theanvil runner 43 and thecartridge runner 44, thelower beam 46 of thefirst drive head 28 pushes against therestraint block 47 of thefirst actuator 6, and theupper beam 45 and thelower beam 46 of thefirst drive head 28 cause the pivotal support of thesecond actuator 7 and thefirst actuator 6 about theactuator 17 to open (see fig. 2, 5, 9 and 14). During the mounting of the actuator-one 6 on the actuator 17: in a first step, thelower beam 46 of the firsttype driving head 28 moves backward at the opening of therestraint slot 42 of theactuator 17 to open the opening of the restraint slot 42 (see fig. 20); secondly, inserting the nailbin mounting block 40 into the nailbin mounting groove 41 through the opening of the nailbin mounting groove 41; at the moment, the rotating support of the rotating executive component drives theconstraint block 47 of the executive component I6 to rotate into theconstraint groove 42 of theexecutive component 17; third,lower beam 46 offirst drive head 28 is moved forward at the opening of constraininggroove 42 to close the opening of constraininggroove 42 of implement 17 such thatlower beam 46 offirst drive head 28 blockscartridge mounting block 40 and constrainingblock 47 from moving out of the opening ofcartridge mounting groove 41 and the opening of constraininggroove 42, mounting implement-6 on implement 17 (see FIG. 5). During the movement of the actuator-one 6 out of the actuator 17: thelower beam 46 of thefirst drive head 28 moves rearward at the opening of therestraint slot 42 of theactuator 17 to open the opening of therestraint slot 42, and thecartridge mounting block 40 and therestraint block 47 are removed from the opening of thecartridge mounting slot 41 and the opening of therestraint slot 42, i.e., the actuator-one 6 can be removed from the actuator 17 (see FIG. 20); at this time, the executive component I6 can be selected; therefore, the technical effects of simple, convenient, quick and safe process for replacing theexecutive component 6 with various specifications are achieved.

Thefirst driving head 28 moves backward along theanvil slide slot 43, so that the connectingblock 29 in thefirst driving head 28 and the firstmosaic slot 33, the firstmosaic block 34, the secondmosaic block 35 and the secondmosaic slot 36 of the drivingblock 30 extend out of thefirst slide slot 23 and the second slide slot 24 (see fig. 20). Removing the firstmosaic block 34 of thejoint block 29 from the secondmosaic groove 36 of thedrive block 30; then, the connectingblock 29 is rotated by 90 °, so that thesecond insert 35 of the connectingblock 29 is inserted into thesecond insert groove 36 of the drivingblock 30 to constitute a second type driving head 48 (see fig. 21 and 24). The second type of drivinghead 48 can move back and forth within the first andsecond slide slots 23 and 24. Theactuator seat 18 and theactuator 17 are inserted into the second mountinggroove 22 by the mountingblock 19 to form a second type of actuator embedded connection (see fig. 3, 22 and 23). Thedrive rod 27 and thesecond drive head 48 are inserted into the first embeddinggroove 33 by the embeddingblock 37 to form a second drive head embedding connection (see fig. 24). The position of the second type of executive component embedded connection is aligned with the position of the second type of driving head embedded connection to form a second type of replaceable embedded connection. When the second mountinggroove 22 and thefirst insert groove 33 of the secondtype driving head 48 are located at positions aligned with each other, a second typereplaceable insert groove 49 is formed (see fig. 22). When the replaceablemosaic piece 39 is inserted into the second replaceablemosaic slot 49, a second replaceable mosaic connection is formed (see fig. 23).

The rotating opening and closing direction of the secondexecutive component 7 and the firstexecutive component 6 supported by the rotating of theexecutive component 17 in the first replaceable embedded connection and the rotating opening and closing direction of the secondexecutive component 7 and the firstexecutive component 6 supported by the rotating of theexecutive component 17 in the second replaceable embedded connection form an angle with each other. Because the endoscopic surgical instrument 1 with the plane joint component can formvarious actuating components 17 with opening and closing directions forming various angles by replacing the first replaceable embedded connection mode or the second replaceable embedded connection mode, the endoscopic surgical instrument 1 with the plane joint component can achieve the technical effect of three-dimensional joint rotation; because the tissue can be clamped in more directions and positions, the stripping and the traction of the tissue to be operated are reduced, thereby achieving the technical effects of increasing the operation range of the endoscopic surgical instrument 1, avoiding additional damage to the human body and being beneficial to the tissue recovery function at the operation position.

Various other endoscopic surgical instruments may also be used in various other endoscopic surgical instruments with reference to the above-described changeable drive features, aspects and effects of the endoscopic surgical instruments. Other various endoscopic surgical instruments can refer to various patents and other related documents cited in the specification, and also refer to Chinese invention patent "multipurpose endoscopic surgical instrument" (application number: 201911292988.2).

Claims (5)

1. A modifiable drive of a laparoscopic surgical instrument, said laparoscopic surgical instrument comprising an actuation assembly, an extension assembly, and an operating assembly, said extension assembly connecting said operating assembly and said actuation assembly; the extension component is provided with a plane joint component; the execution assembly is provided with an execution piece, and the execution piece is provided with an execution piece I and an execution piece II; the operating assembly is provided with a driving part; the driving piece controls the opening and closing of the second execution piece and the first execution piece;

the method is characterized in that: the driving part is internally provided with a driving rod and a driving head; the driving rod is provided with an embedded block; the driving head is internally provided with a connecting block and a driving block; the connecting block is provided with a first embedding groove, a first embedding block and a second embedding block; the first mosaic block and the second mosaic block form an angle with each other; the driving block is provided with a second embedding groove; when the first mosaic block of the connecting block is inserted into the second mosaic groove of the driving block, a first driving head is formed; when the second mosaic block of the connecting block is inserted into the second mosaic groove of the driving block, a second driving head is formed; the driving rod and the first driving head are connected in an embedded manner by inserting an embedded block into a first embedded groove; the driving rod and the second driving head are inserted into the first embedding groove by the embedding block to form the second driving head to be embedded and connected.

2. The interchangeable drive for laparoscopic surgical instruments of claim 1, wherein said actuator assembly has an actuator seat therein; the execution piece seat is internally provided with an installation block; the executing piece is provided with a first mounting groove with an opening, a second mounting groove with an opening, a first sliding groove in the front-back direction and a second sliding groove in the front-back direction; the opening directions of the first mounting groove and the second mounting groove form an angle with each other; the installation block of the execution piece seat is inserted into the first installation groove of the execution piece to form a first type of execution piece embedded connection; the mounting block of the executive seat is inserted into the second mounting groove of the executive to form second type of executive mosaic connection; the first sliding groove and the second sliding groove form an angle with each other; the first driving head can move back and forth in the first sliding groove; the second driving head can move back and forth in the first sliding groove and the second sliding groove.

3. The modifiable driving member of an endoscopic surgical instrument as set forth in claim 2, wherein said first actuating member is engaged in said first engagement position to align with said first drive head to form a first replaceable engagement; the position of the second type of execution piece in mosaic connection is aligned with the position of the second type of driving head in mosaic connection to form a second type of replaceable mosaic connection; the opening and closing direction between the second execution piece and the first execution piece in the first replaceable mosaic connection and the opening and closing direction between the second execution piece and the first execution piece in the second replaceable mosaic connection form an angle with each other.

4. The modifiable drive of an endoscopic surgical instrument as set forth in claim 3, wherein said actuator seat has a seat slot extending in a forward-rearward direction, said drive rod being mounted in said seat slot; when the mounting block of the actuator seat and the mosaic block of the driving rod are positioned at the position aligned with each other, a replaceable mosaic block is formed; forming a first replaceable insert groove when the first mounting groove of the actuator and the first insert groove of the first driving head are positioned in alignment with each other; when the second mounting groove of the actuating element and the first embedding groove of the second type driving head are positioned at the position aligned with each other, a second type replaceable embedding groove is formed; forming said first replaceable inlay connection when said replaceable inlay block is inserted into said first replaceable inlay slot; the second replaceable mosaic connection is formed when a replaceable mosaic tile is inserted into the second replaceable mosaic slot.

5. The modifiable drive member of an endoscopic surgical instrument as in claim 4, wherein said actuating member comprises a resilient positioning member; the driving head is provided with a first positioning hole and a second positioning hole;

when the first mounting groove of the execution piece and the first embedding groove of the driving head are positioned at the position aligned with each other, the elastic positioning piece is bounced into the first positioning hole, the driving head is positioned in the execution piece, and the first replaceable embedding groove is formed; when the first replaceable mosaic connection is formed, the driving piece moves forwards, so that the elastic positioning piece is separated from the first positioning hole and then bounced into the second positioning hole, and at the moment, the driving piece stops the replaceable mosaic block from moving out of the first replaceable mosaic groove;

when the second mounting groove of the execution piece and the first embedding groove of the driving head are positioned at the position aligned with each other, the elastic positioning piece is bounced into the first positioning hole, the driving head is positioned in the execution piece, and the second replaceable embedding groove is formed; after the second replaceable embedding connection is formed, the driving piece moves forwards, the elastic positioning piece is made to be separated from the first positioning hole and then bounced into the second positioning hole, and at the moment, the driving piece prevents the replaceable embedding block from being moved out of the second replaceable embedding groove.

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