Driving wire guiding assembly and surgical instrument

Abstract

The invention relates to the technical field of medical instruments, in particular to a driving wire guiding assembly and a surgical instrument. The drive wire guide assembly includes a first guide and a second guide. A first via hole is formed in the first guide piece; and a second via hole is formed in the second guide piece. And the second guide piece is configured to be stacked with the first guide piece, so that the second via hole and the first via hole are overlapped to form a limiting hole for accommodating the driving wire. According to the driving wire guiding assembly, the defect that in the prior art, a guiding piece is difficult to limit the driving wire can be overcome, and effective guiding is provided for the driving wire.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a driving wire guide assembly and a surgical instrument. Background Art

[0002] At present, a type of surgical instrument used in a minimally invasive surgical robot uses a drive wire as a driving element. The drive wire generally needs to be redirected through a guide inside the surgical instrument to connect the rear-end drive device and the front-end execution part. Among them, a pulley is a commonly used guide for the drive wire. However, during the use of the surgical instrument, the drive wire is easy to break away from the guide groove of the pulley, making it impossible for the guide to effectively guide the drive wire to redirect to the desired direction. Summary of the invention

[0003] The invention provides a driving wire guiding assembly and a surgical instrument to provide effective guidance for the driving wire.

[0004] According to a first aspect of the present disclosure, a drive line guide assembly is provided, comprising a first guide member and a second guide member. A first via hole is provided in the first guide member. A second via hole is provided in the second guide member. The second guide member is configured to be stacked with the first guide member so that the second via hole overlaps with the first via hole to form a limit hole for accommodating the drive line.

[0005] In some embodiments, one first via hole overlaps with two second via holes to form two limiting holes.

[0006] In some embodiments, two first via holes overlap with one second via hole to form two limiting holes.

[0007] In some embodiments, the first via hole overlaps with the second via hole in a circumferential direction of the first guide or in a radial direction of the first guide.

[0008] In some embodiments, the first guide member further includes a first center hole, and the first center hole is independent of the first via hole. The second guide member further includes a second center hole, and the second center hole is independent of the second via hole. After the first guide member and the second guide member are stacked, the first center hole overlaps with the second center hole.

[0009] In some embodiments, the orthographic projection of the limiting hole in the length direction of the driving wire guiding assembly has a closed contour.

[0010] In some embodiments, the driving line includes a terminal portion and a body portion, and a cross-sectional area of ​​the terminal portion in a length direction of the driving line is greater than a cross-sectional area of ​​the body portion in the length direction of the driving line.

[0011] The first via hole includes a first part, a second part, and a third part that are interconnected, and the second part and the third part are respectively located on both sides of the first part. The first part is configured to allow the terminal part to pass through, and the second part and the third part are configured to respectively overlap with the second via hole to form two limiting holes.

[0012] In some embodiments, in the direction of the first part towards the second part, the width of the first via hole gradually decreases, and in the direction of the first part towards the third part, the width of the first via hole gradually decreases.

[0013] In some embodiments, the second via hole includes a fourth part, a fifth part, and a sixth part that are interconnected, and the fifth part and the sixth part are respectively located on both sides of the fourth part. The fourth part is configured to allow the terminal part to pass through. In the direction of the fourth part towards the fifth part, the width of the second via hole gradually decreases, and in the direction of the fourth part towards the sixth part, the width of the second via hole gradually decreases. The fifth part and the sixth part are configured to respectively overlap with the second part and the third part to form two limiting holes.

[0014] In some embodiments, the driving wire includes a terminal part and a body part, and the cross-sectional area of the terminal part in the length direction of the driving wire is larger than the cross-sectional area of the body part in the length direction of the driving wire.

[0015] The second via hole includes a fourth part and a fifth part that are interconnected. The fourth part is configured to allow the terminal part to pass through. The width of the fifth part is smaller than the width of the fourth part. The fifth part is configured to overlap with the first via hole to form a limiting hole.

[0016] In some embodiments, the first via hole includes a first part, a second part, and a third part that are interconnected, and the second part and the third part are respectively located on both sides of the first part. The first part is configured to allow the terminal part to pass through. The widths of the second part and the third part are smaller than the width of the first part. The second part and the third part are configured to respectively overlap with the fifth parts of two second via holes to form two limiting holes.

[0017] In some embodiments, a first limiting part is provided on the first guiding member, and a second limiting part is provided on the second guiding member. After the first guiding member and the second guiding member are stacked, the first limiting part abuts against the second limiting part.

[0018] According to the second aspect of the present invention disclosed, the present invention further provides a surgical instrument, including a driving wire and the above-mentioned driving wire guiding assembly, and the driving wire is disposed in the limiting holes of the driving wire guiding assembly.

[0019] The first guide and the second guide of the drive line guiding assembly provided by the present invention are configured to be stacked and aligned so that the first via hole and the second via hole overlap to form a limiting hole, and after passing through the limiting hole, the drive line is redirected inside the surgical instrument to connect the rear-end drive device and the end effector. The present invention constrains the drive line through the limiting hole formed by the overlap of the first via hole and the second via hole, replacing the pulley orientation in the prior art, which can effectively prevent the drive line from slipping out of the guide groove of the pulley, thereby effectively guiding the drive line so that the drive line is redirected to the desired direction.

[0020] The surgical instrument provided by the present invention includes the above drive line guiding assembly, which can effectively prevent the drive line from slipping and effectively guide the drive line so that the drive line is redirected to the desired direction to meet the requirements of surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a surgical instrument according to an embodiment of the present invention;

[0022] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0023] Figure 3 is an assembled schematic view of the drive line guiding assembly and the drive line according to an embodiment of the present invention;

[0024] Figure 4 is a schematic structural view of a drive line with a terminal part according to an embodiment of the present invention;

[0025] Figure 5 is a top view of the drive line guiding assembly of the present invention pointing from the proximal end to the distal end;

[0026] Figure 6 is Figure 5 a schematic structural view of the first guide of

[0027] Figure 7 is Figure 5 a schematic structural view of the second guide of

[0028] Figure 8 is a schematic view of two water-drop-shaped holes overlapping to form a limiting hole according to an embodiment of the present invention;

[0029] Figure 9 is a schematic view of two water-drop-shaped holes overlapping to form a limiting hole according to another embodiment of the present invention;

[0030] Figure 10 is a schematic view of two water-drop-shaped holes overlapping to form a limiting hole according to still another embodiment of the present invention;

[0031] Figure 11Schematic diagram of the structure where two "mountain"-shaped holes overlap to form a limiting hole in another embodiment of the present invention;

[0032] Figure 12 is Figure 11 Top view of the driving wire guiding assembly of

[0033] Figure 13 is Figure 12 Schematic diagram of the structure of the first guiding member of

[0034] Figure 14 is Figure 12 Schematic diagram of the structure of the second guiding member of

[0035] Figure 15 Schematic diagram of the structure where two "mountain"-shaped holes overlap to form a limiting hole in yet another embodiment of the present invention;

[0036] Figure 16 is Figure 15 Schematic diagram of the structure of the first through hole of

[0037] Figure 17 is Figure 16 Schematic diagram of the structure of the second through hole of

[0038] Reference numerals: 10 - driving wire guiding assembly; 100 - first guiding member; 100a - first limiting portion; 110 - first through hole; 111 - first part; 112 - second part; 113 - third part; 120 - first central hole; 200 - second guiding member; 200a - first element; 200b - second element; 200c - second limiting portion; 210 - second through hole; 211 - fourth part; 212 - fifth part; 213 - sixth part; 220 - second central hole; 300 - limiting hole; 400 - groove; 20 - driving wire; 20a - terminal portion; 20b - body portion; 20c - length direction of the driving wire; 30 - surgical instrument; 30a - housing; 30b - end effector. Detailed implementation manners

[0039] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of this embodiment, rather than all the embodiments. Without conflict, the features in the following embodiments and implementation manners can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0040] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0041] Surgical robots are used in various types of minimally invasive surgeries due to their advantages such as dexterity, intuitive operation, and short learning curve. The surgical robot holds the surgical instrument through a robotic arm. The surgical instrument includes a shell connected to the robotic arm and an instrument shaft connected to the shell. The end of the instrument shaft away from the shell is provided with a moving part. The moving part includes an end effector and a joint assembly for increasing the freedom of movement of the end effector. The end effector can be a hook, a shovel, a clamp, a scissors, etc. A drive line and a guide for guiding the drive line are usually provided in the shell of the surgical instrument, so that the drive line can drive the end effector to cooperate with the joint assembly to perform various degrees of freedom, such as pitch and yaw, so as to meet the needs of surgical operations.

[0042] In the related art, the guide member for guiding the driving wire is usually set as a pulley. On the one hand, the pulley helps to guide the movement of the driving wire to improve the smoothness of the movement of the driving wire. On the other hand, the pulley can reduce the sliding friction between it and the driving wire to extend the service life of the driving wire. However, the driving wire is also easy to break away from the guide groove of the pulley during use, so that the guide member cannot effectively guide the driving wire to redirect to the desired direction, affecting the surgical operation.

[0043] Please refer to Figure 1 and Figure 2 An embodiment of the present invention provides a surgical instrument 30 for a surgical robot. The surgical instrument 30 may be an ultrasonic scalpel or a stapler. The surgical instrument 30 includes a housing 30a and a drive assembly disposed in the housing 30a. The drive assembly includes a drive wire 20 and a drive wire guide assembly 10 for guiding the drive wire 20. The drive wire 20 is guided by the drive wire guide assembly 10 to be redirected inside the surgical instrument 30 to connect and control the end effector 30b.

[0044] Specifically, the drive wire guide assembly 10 can be arranged in the long axis direction of the instrument shaft of the surgical instrument 30, and guide the drive wire 20 of the drive assembly located at different positions of the housing 30a into the instrument shaft. To facilitate the installation and positioning of the drive wire guide assembly 10, a step is provided on the outer wall of the drive wire guide assembly 10, and a mounting hole for accommodating the step is provided in the housing 30a of the surgical instrument 30, so that the step and the mounting hole cooperate to limit the installation position of the drive wire guide assembly 10 in the surgical instrument 30.

[0045] Please refer to Figure 3, the drive wire guiding assembly 10 includes a first guiding member 100 and a second guiding member 200. The first guiding member 100 and the second guiding member 200 are two independent block-shaped elements. When the drive wire guiding assembly 10 is assembled in the surgical instrument 30, the first guiding member 100 is fixedly arranged on the proximal side of the second guiding member 200. Optionally, the first guiding member 100 and the second guiding member 200 are formed as circular blocks, reducing the volume and occupied space while realizing the functions. Optionally, the diameter of the first guiding member 100 is smaller than the diameter of the second guiding member 200, and a stepped portion for mating with the mounting hole is formed between the first guiding member 100 and the second guiding member 200 in the assembled state. Or, the diameter of the first guiding member 100 is larger than the diameter of the second guiding member 200 to form a stepped portion for mating with the mounting hole. It can be understood that the first guiding member 100 and the second guiding member 200 can also be formed into other shapes such as rectangles, squares, polygons, ellipses, etc. according to needs.

[0046] Please refer to Figure 4 , the drive wire 20 of an embodiment of the present invention includes a terminal portion 20a and a body portion 20b. The terminal portion 20 is located at the end of the body portion 20b and is used to connect to other components. The cross-sectional area of the terminal portion 20a in the length direction 20c of the drive wire is larger than the cross-sectional area of the body portion 20b in the length direction 20c of the drive wire. The first through hole 110 and the second through hole 210 are available for the terminal portion 20a to pass through. Further, the cross-sectional area of the limiting hole 300 in the length direction of the drive wire guiding assembly 10 is slightly larger than the cross-sectional area of the body portion 20b of the drive wire 20 located inside the limiting hole 300 in the length direction of the drive wire guiding assembly 10, but smaller than the cross-sectional area of the terminal portion 20a of the drive wire 20 located outside the limiting hole 300 in the length direction of the drive wire guiding assembly 10.

[0047] Please refer to Figure 5, a plurality of first through holes 110 are formed in the first guide member 100, and a plurality of second through holes 210 are formed in the second guide member 200. Optionally, the plurality of first through holes 110 are arranged along the circumferential direction of the first guide member 100, and the plurality of second through holes 210 are arranged along the circumferential direction of the second guide member 200. The second guide member 200 is configured to be stacked with the first guide member 100 so that the second through holes 210 overlap with the corresponding first through holes 110 to form a limiting hole 300 for accommodating the driving wire 20. Here, the "stacked arrangement" is in the direction from the proximal end to the distal end of the surgical instrument 30. In some embodiments, the second through holes 210 may correspond one-to-one with the first through holes 110, or they may not be in a one-to-one correspondence relationship. These embodiments will be discussed later. The limiting hole 300 is used to limit the driving wire 20, and its cross-sectional area in the length direction of the driving wire guiding assembly 10 is slightly larger than the cross-sectional area of the portion of the driving wire 20 located in the limiting hole 300 in the length direction of the driving wire guiding assembly 10. Its shape is set to limit the driving wire 20 while accommodating the driving wire 20.

[0048] When assembling the driving wire guiding assembly 10 and the driving wire 20, the terminal portions 20a of the driving wire 20 can be respectively passed through the first through holes 110 of the first guide member 100 and the second through holes 210 of the second guide member 200, and then the first guide member 100 and the second guide member 200 are stacked and aligned so that the first through holes 110 and the corresponding second through holes 210 partially overlap to form a limiting hole 300 to guide and limit the body portion 20b of the driving wire 20.

[0049] In the driving wire guiding assembly 10 of this embodiment, the first through holes 110 and the second through holes 210 are available for the terminal portions 20a to pass through, and the limiting hole 300 formed by the partial overlap of the first through holes 110 and the second through holes 210 is used to restrict the driving wire 20, replacing the pulley to guide the driving wire 20, so as to effectively prevent the driving wire 20 from slipping off the pulley, enabling the driving wire guiding assembly 10 to effectively guide the driving wire 20 to redirect to the required direction.

[0050] At the same time, the stacked arrangement of the first guide member 100 and the second guide member 200 increases the contact area between the inner wall of the limiting hole 300 and the driving wire 20, improves the supporting effect of the driving wire guiding assembly 10 on the driving wire 20, and reduces the loss of the driving wire 20 caused by stress concentration during movement. Moreover, the first guide member 100 and the second guide member 200 are arranged as a split structure. On the one hand, it is convenient to stack and align to form the limiting hole 300, and on the other hand, it is convenient for maintenance and replacement, with flexible use. In addition, the first guide member 100 and the second guide member 200 in the present invention can be made of metal materials to further enhance the support.

[0051] Further, the driving wire guiding assembly 10 can also close the fluid passage of the instrument shaft. That is, after the first guiding member 100 and the second guiding member 200 are stacked and aligned, the portion of the second guiding member 200 without the second through hole 210 can cover the portion of the first guiding member 100 where the first through hole 110 is not used to form the limiting hole 300, and the portion of the first guiding member 100 without the first through hole 110 can also cover the portion of the second guiding member 200 where the second through hole 210 is not used to form the limiting hole 300, and the body portion 20b of the driving wire 20 is filled in the limiting hole 300 to realize the closing of the internal passage of the instrument shaft by the driving wire guiding assembly 10.

[0052] In an alternative embodiment, to avoid interference between the driving wire 20 and other components during movement, the first guiding member 100 further includes a first central hole 120, the first central hole 120 is independent of the first through hole 110, and a plurality of first guiding members 100 are arranged around the first central hole 120. The second guiding member 200 further includes a second central hole 220, the second central hole 220 is independent of the second through hole 210, and a plurality of second through holes 210 are arranged around the second central hole 220. After the first guiding member 100 and the second guiding member 200 are stacked and aligned, the first central hole 120 coincides with the second central hole 220. The first central hole 120 and the second central hole 220 can accommodate other components, such as wires, flushing rods, etc. The other components accommodated in the first central hole 120 and the second central hole 220 remain stationary during the operation, and the driving wire 20 moves during the operation. Since the first central hole 120 and the first through hole 110 are independent of each other in this embodiment, and the second central hole 220 and the second through hole 210 are also independent of each other, the driving wire 20 in the limiting hole 300 will not interfere with other components during use.

[0053] Optionally, the first central hole 120 and the second central hole 220 are respectively set as waist-shaped holes, or can also be set as circular holes.

[0054] Optionally, the orthographic projection of the limiting hole 300 in the length direction 20c of the driving wire has a closed contour. That is, each position of the limiting hole 300 can support the driving wire 20 to at least partially offset the lateral force received when the driving wire 20 is redirected, and extend the service life of the driving wire 20.

[0055] Optionally, both the first through hole 110 and the second through hole 210 are non-circular, but when the first guiding member 100 and the second guiding member 200 are stacked and aligned, the contour line of the limiting hole 300 formed after the second portion 112 and the fifth portion 212 coincide can be circular or approximately circular to better accommodate and support the driving wire 20.

[0056] Optionally, to improve the structural compactness of the driving wire guiding assembly 10, reduce its volume and occupied space, a plurality of limiting holes 300 formed by overlapping a plurality of first through holes 110 and a plurality of second through holes 210 are arranged along the circumferential direction of the first guiding member 100.

[0057] Please refer to Figure 6 and Figure 7 , in some embodiments, to reduce the occupied area of the first through hole 110 and thus reduce the volume of the first guiding member 100, the first through hole 110 is configured as a water droplet-shaped hole. At the same time, without affecting the formation of the limiting hole 300, to reduce the number of processed second through holes 210, the second through hole 210 is configured as a "mountain"-shaped hole, so that two limiting holes 300 are formed by overlapping one second through hole 210 with two first through holes 110.

[0058] Specifically, the first through hole 110 includes a first part 111 and a second part 112 that are in communication with each other. The first part 111 is configured to allow the terminal part 20a to pass through, and the second part 112 is configured to accommodate the body part 20b and form a limiting hole 300 with the second through hole 210. Along the arrangement direction of the first part 111 and the second part 112 (the radial direction of the first guiding member 100), the width of the first through hole 110 gradually decreases.

[0059] The second through hole 210 includes a fourth part 211, a fifth part 212, and a sixth part 213 that are in communication with each other. The fifth part 212 and the sixth part 213 are respectively located on opposite sides of the fourth part 211. The fourth part 211 is configured to allow the terminal part 20a to pass through. The fifth part 212 is configured to overlap with the second part 112 of one first through hole 110 to form a limiting hole 300, and the sixth part 213 is configured to overlap with the second part 112 of another first through hole 110 to form another limiting hole 300. In the direction of the fourth part 211 towards the fifth part 212 (the circumferential direction of the second guiding member 200), the width of the second through hole 210 gradually decreases, and in the direction of the fourth part 211 towards the sixth part 213 (the circumferential direction of the second guiding member 200), the width of the second through hole 210 gradually decreases. In this embodiment, the widths of the fifth part 212 and the sixth part 213 along their arrangement direction (the circumferential direction of the second guiding member 200) are substantially uniform. The widths of the fifth part 212 and the sixth part 213 along their arrangement direction are smaller than the width of the fourth part 211 along their arrangement direction.

[0060] It should be noted that the above embodiments are described by taking the driving wire 20 with a terminal part 20a having a diameter larger than that of the body part 20b as an example. The embodiments of the present invention can also be applied to driving wires with terminals having a diameter equal to or substantially the same as that of the body part, or driving wires without a terminal part.

[0061] In an embodiment of the present invention, the first via hole 110 may also be a "mountain"-shaped hole, and the second via hole 210 may be a water-drop-shaped hole, so that two limiting holes 300 are formed by overlapping one first via hole 110 with two second via holes 210. Further, the first via hole 110 and the second via hole 210 may also be other shapes such as a rectangle, a square, a polygon, an ellipse, etc., so as to satisfy the formation of two limiting holes 300 by overlapping one first via hole 110 with two second via holes 210, or the formation of two limiting holes 300 by overlapping one second via hole 210 with two first via holes 110, which will not be elaborated in the present invention.

[0062] Please refer to Figure 8 , and Figure 5 different from the embodiment of Figure 8 In the embodiment of

[0063] Specifically, the second via hole 210 includes a fourth part 211 and a fifth part 212 that are in communication with each other. The fourth part 211 is configured to allow the terminal part 20a to pass through, and the fifth part 212 is configured to receive the body part 20b and form a limiting hole 300 with the second part 112 of the first via hole 110. Along the arrangement direction of the fourth part 211 and the fifth part 212 (the radial direction of the second guiding member 200), the width of the second via hole 210 gradually decreases.

[0064] At this time, when the first guiding member 100 and the second guiding member 200 are stacked, the plurality of limiting holes 300 formed by overlapping the plurality of first via holes 110 with the plurality of second via holes 210 are also arranged along the circumferential direction of the first guiding member 100. Moreover, the extending direction of the first via hole 110 is the same as the extending direction of the second via hole 210, and both extend substantially in the circumferential direction of the first guiding member 100, which can reduce the occupied space of the first via hole 110 and the second via hole 210 in the radial direction of the first guiding member 100.

[0065] Please refer to Figure 9 , and Figure 8 different from the embodiment of Figure 9 In the embodiment of

[0066] Please refer to Figure 10 , and Figure 9 different from the embodiment of Figure 10In the embodiment, at this time, the extending directions of the first via hole 110 and the second via hole 210 are the same, and both extend along the radial direction of the first guiding member 100.

[0067] In some embodiments, the first via hole 110 can also be set as a waist-shaped hole, and the second via hole 210 is also set as a waist-shaped hole. Two limiting holes 300 are formed by overlapping the two ends of the waist-shaped hole of the second via hole 210 with two first via holes 110 respectively. It is equivalent to that a waist-shaped hole provided on the second guiding member 200 is located between two adjacent waist-shaped holes provided on the first guiding member 100, and then the two ends of the waist-shaped hole on the second guiding member 200 can be overlapped with the two waist-shaped holes on the first guiding member 100 respectively to form 2 limiting holes 300.

[0068] Of course, in other embodiments, the first via hole 110 and the second via hole 210 can also be respectively set as round holes, square holes, elliptical holes, special-shaped holes or other through holes that meet the usage requirements of this embodiment, and this embodiment does not make any restrictions.

[0069] Please refer to Figures 11 to 14 , in some embodiments, on the basis of not affecting the formation of the limiting holes 300, the processing quantity of the first via holes 110 can be reduced, and the first via holes 110 are set as "mountain"-shaped holes. That is to say, at this time, both the first via holes 110 and the second via holes 210 are "mountain"-shaped holes.

[0070] Specifically, the first via holes 110 on the first guiding member 100 include a first part 111, a second part 112 and a third part 113 that are communicated with each other, and the second part 112 and the third part 113 are respectively located on both sides of the first part 111. The first part 111 is configured to allow the terminal part 20a to pass through, the second part 112 is configured to overlap with a fourth part 211 of a second via hole 210 to form a limiting hole 300 for the body part 20b of the driving wire 20 to pass through, and the third part 113 is configured to overlap with a fifth part 212 of another second via hole 210 to form another limiting hole 300 for the body part 20b of the driving wire 20 to pass through. In the direction of the first part 111 facing the second part 112 (the circumferential direction of the first guiding member 100), the width of the first via hole 110 gradually decreases, and in the direction of the first part 111 facing the third part 113 (the circumferential direction of the first guiding member 100), the width of the first via hole 110 gradually decreases. In this embodiment, since the widths of the second part 112 and the third part 113 in the arrangement direction of the three (the circumferential direction of the first guiding member 100) are substantially uniform, it can also be said that the widths of the second part 112 and the third part 113 in the arrangement direction of the three are smaller than the width of the first part 111 in the arrangement direction of the three.

[0071] In some embodiments, to prevent the deformation of the limiting hole 300 caused by the movement of the first guiding member 100 relative to the second guiding member 200 during use, which may lead to the failure of the constraint on the driving wire 20, a limiting feature is provided between the first guiding member 100 and the second guiding member 200.

[0072] Please refer to Figures 12 to 14 , in an alternative embodiment, to facilitate the alignment of the first guiding member 100 and the second guiding member 200, the second guiding member 200 includes a first element 200a and a second element 200b arranged in a stacked manner. A stepped portion for positioning the driving wire guiding assembly is formed between the first element 200a and the second element 200b. The first element 200a is located at the proximal end of the second element 200b. A groove 400 for accommodating the first guiding member 100 is formed in the first element 200a. By placing the first guiding member 100 in the groove 400 of the second guiding member 200, the stacked alignment of the first guiding member 100 and the second guiding member 200 can be achieved. Further, the outer peripheral side surface of the first guiding member 100 includes a connected first arc surface and a first plane, thereby forming a circular block with a part cut off. The first plane forms the first limiting portion 100a of the first guiding member 100, and the first limiting portion 100a facilitates the installation alignment of the driving wire guiding assembly 10. Similarly, the inner peripheral side surface of the first element 200a that defines the groove 400 of the second guiding member 200 includes a connected second arc surface and a second plane, thereby forming a groove 400 in the shape of a circular block with a part cut off. The second plane forms the second limiting portion 200c of the second guiding member 200. After the first guiding member 100 and the second guiding member 200 are stacked, the first limiting portion 100a abuts against the second limiting portion 200c to lock the shape and size of the formed limiting hole 300.

[0073] Please refer to Figures 15 to 17 , in other embodiments of the present invention, when the first through hole 110 and the second through hole 210 are respectively set as "mountain"-shaped holes, the second part 112, the first part 111, and the third part 113 of the first through hole 110 are arranged in sequence along the circumferential direction of the first guiding member 100, and both sides of the first part 111 extending along the radial direction of the first guiding member 100 protrude from the second part 112 and the third part 113 respectively. Correspondingly, the fifth part 212, the fourth part 211, and the sixth part 213 of the second through hole 210 are arranged in sequence along the circumferential direction of the second guiding member 200, and both sides of the fourth part 211 extending along the radial direction of the second guiding member 200 protrude from the fifth part 212 and the sixth part 213 respectively.

[0074] It should be understood that the present invention is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

[0075] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

Claims

1. A drive line guiding component, characterized in that, Comprising: A first guide member having a first through hole formed therein; A second guide member having a second through hole formed therein, the second guide member being configured to be stacked with the first guide member such that the second through hole overlaps with the first through hole to form a limiting hole for accommodating a driving wire.

2. The drive line guiding assembly according to claim 1, wherein, One of the first through holes overlaps with two of the second through holes to form two of the limiting holes.

3. The drive line guiding assembly according to claim 2, wherein, Two of the first through holes overlap with one of the second through holes to form two of the limiting holes.

4. The drive line guiding assembly according to claim 1, characterized in that The first through hole and the second through hole overlap in the circumferential direction of the first guide member or in the radial direction of the first guide member.

5. The drive line guiding assembly according to claim 1, characterized in that, The first guide member further includes a first central hole independent of the first through hole, the second guide member further includes a second central hole independent of the second through hole, and after the first guide member and the second guide member are stacked, the first central hole coincides with the second central hole.

6. The drive line guiding assembly according to claim 1, characterized in that The positive projection of the limiting hole in the length direction of the driving wire guiding assembly has a closed contour.

7. The drive line guiding assembly according to any one of claims 1 to 6, characterized in that, The driving wire includes a terminal portion and a body portion, and the cross-sectional area of the terminal portion in the length direction of the driving wire is larger than the cross-sectional area of the body portion in the length direction of the driving wire; The first through hole includes a first portion, a second portion, and a third portion that communicate with each other, and the second portion and the third portion are respectively located on both sides of the first portion. The first portion is configured to allow the terminal portion to pass through, and the second portion and the third portion are configured to overlap with the second through hole respectively to form two of the limiting holes.

8. The drive line guiding assembly according to claim 7, wherein, In the direction of the first portion towards the second portion, the width of the first through hole gradually decreases, and in the direction of the first portion towards the third portion, the width of the first through hole gradually decreases.

9. The drive line guiding assembly according to claim 7, wherein, The second through hole includes a fourth portion, a fifth portion, and a sixth portion that communicate with each other, and the fifth portion and the sixth portion are respectively located on both sides of the fourth portion. The fourth portion is configured to allow the terminal portion to pass through. In the direction of the fourth portion towards the fifth portion, the width of the second through hole gradually decreases, and in the direction of the fourth portion towards the sixth portion, the width of the second through hole gradually decreases. The fifth portion and the sixth portion are configured to overlap with the second portion and the third portion respectively to form two of the limiting holes.

10. The drive line guiding assembly according to any one of claims 1, 2, 4 to 6, characterized in that, The driving wire includes a terminal portion and a body portion, and the cross-sectional area of the terminal portion in the length direction of the driving wire is larger than the cross-sectional area of the body portion in the length direction of the driving wire; The second through hole includes a fourth portion and a fifth portion that communicate with each other. The fourth portion is configured to allow the terminal portion to pass through, and the width of the fifth portion is smaller than the width of the fourth portion. The fifth portion is configured to overlap with the first through hole to form the limiting hole.

11. The drive line guiding assembly according to claim 10, characterized in that, The first via hole includes a first part, a second part, and a third part that are in communication with each other, and the second part and the third part are respectively located on both sides of the first part. The first part is configured to allow the terminal part to pass through, the widths of the second part and the third part are smaller than the width of the first part, and the second part and the third part are configured to respectively overlap with the fifth parts of the two second via holes to form two limiting holes.

12. The drive line guiding assembly according to claim 1, characterized in that, A first limiting part is provided on the first guiding part, and a second limiting part is provided on the second guiding part. After the first guiding part and the second guiding part are stacked, the first limiting part abuts against the second limiting part.

13. A surgical instrument, characterized in that, It includes a driving wire and a driving wire guiding assembly according to any one of claims 1 to 12, and the driving wire is disposed in the limiting hole of the driving wire guiding assembly.

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