Surgical instrument

Abstract

The utility model discloses a surgical instrument, and belongs to the field of medical instruments. Comprising a handle assembly; the elongated body assembly defines a longitudinal axis and is rotatably connected to the handle assembly through the rotating head assembly, and the end execution assembly comprises a far-side execution part which can be operated to turn relative to the longitudinal axis; the fixing part is fixed relative to the handle assembly; a rotating member operable to rotate relative to the stationary member about a longitudinal axis; wherein a conductive contact and a conductive slideway which are in conductive connection with each other are arranged between the fixed part and the rotating part, and when the slender body assembly is located in the first circumferential range, the conductive contact between the fixed part and the rotating part is not in contact with the conductive slideway; and when the slender body assembly rotates to a second circumferential range, the conductive contact between the fixed part and the rotating part is conductively connected with the conductive slideway. According to the surgical instrument, the rotation position of the end execution assembly can be recognized, and then the end execution assembly is controlled to be bent in the set direction.

Description

Technical Field

[0001] The utility model relates to the field of surgical instruments, and particularly relates to a clamping, cutting and anastomosing surgical instrument. Background Art

[0002] Linear clamping, cutting and anastomosing surgical instruments generally include a handle assembly, an elongate body, and an end effector assembly. Among them, a rotating head is provided between the elongate body and the handle assembly. When the rotating head is operated to rotate around the longitudinal axis of the surgical instrument, it can drive the elongate body and the end effector assembly to rotate relative to the handle assembly together. At the same time, the end effector assembly is pivotally connected to the distal end of the elongate body, and a bending control part is also provided on the surgical instrument. When the bending control part is operated, the end effector assembly can be operated and bent relative to the elongate body. The end effector assembly includes a pair of grasping members, and the grasping members include a cartridge assembly and an anvil assembly arranged oppositely. The tissue to be anastomosed is clamped between the cartridge assembly and the anvil assembly.

[0003] During the use of the stapler, when the rotating head is operated so that the cartridge assembly is located above the handle assembly and the anvil assembly is located below the handle assembly, and when the control key for bending the bending control part to one side is operated, the end effector assembly of the surgical instrument bends to the corresponding side. For example, when the control key for bending the bending control part to the left is operated, the end effector assembly performs a left bend; and when the rotating head is operated so that the cartridge assembly is located below the handle assembly and the anvil assembly is located above the handle assembly, and then the left bend control key of the bending control part is operated, the end effector assembly still needs to perform a left bend operation. In order to avoid the end effector assembly from flipping / inverting after rotation and the bending operation acting in the opposite direction to the intended direction, this application is proposed. Summary of the Utility Model

[0004] To this end, the utility model provides a surgical instrument that can identify the rotation position of the end effector assembly and then control the end effector assembly to bend in a set direction.

[0005] In view of the above technical problems, the utility model provides the following technical solutions:

[0006] A surgical instrument includes a handle assembly; a slender body assembly rotatably connected to the handle assembly by a rotating head assembly, the slender body assembly defining a longitudinal axis; an end effector assembly operably connected to the distal end of the slender body assembly, including a distal effector, the distal effector being operable to bend relative to the longitudinal axis; and further includes: a fixed member fixedly disposed within the rotating head assembly or within the handle assembly relative to the handle assembly; a rotating member operably rotatable relative to the fixed member about the longitudinal axis; wherein, a conductive contact and a conductive slideway that are electrically connected to each other are provided between the fixed member and the rotating member, when the slender body assembly is located within a first circumferential range, the conductive contact and the conductive slideway between the fixed member and the rotating member are not in contact; when the slender body assembly rotates to a second circumferential range, the conductive contact and the conductive slideway between the fixed member and the rotating member are electrically connected.

[0007] In some embodiments of the present utility model, the conductive slideway is an arc-shaped slideway with the longitudinal axis as the rotation center line.

[0008] In some embodiments of the present utility model, the rotating head assembly includes: a rotating head housing; a slip ring portion, the slip ring portion includes a conductive fixed ring fixed relative to the handle assembly and a conductive moving ring parallel to and disposed with a gap from the conductive fixed ring, the conductive moving ring is electrically connected to the conductive fixed ring; a rotation driving member fixed to the rotating head housing and connected to the conductive moving ring to drive it to rotate about the longitudinal axis.

[0009] In some embodiments of the present utility model, the handle assembly includes a handle housing, a circular wall is provided at the distal end of the handle housing, the fixed member is a flexible circuit board mounted on the circular wall of the handle housing, and the conductive slideway is provided on the flexible circuit board; the rotating member is a rotation driving member, and the conductive contact is provided on the rotation driving member.

[0010] In some embodiments of the present utility model, the handle housing includes a first half housing and a second half housing symmetrically arranged, and the flexible circuit board is mounted on the inner side wall of the first half housing.

[0011] In some embodiments of the present utility model, the rotation driving member includes a mounting ring portion and a driving insertion portion, the mounting ring portion is inserted and fixed in an insertion groove on the inner wall of the rotating head housing, the driving insertion portion is fixed on one side surface of the mounting ring portion and extends proximally, and the end of the driving insertion portion is adapted to cooperate with the conductive moving ring; the conductive contact is provided on the driving insertion portion.

[0012] In some embodiments of the present utility model, the slip ring portion further includes a support member for supporting the conductive fixed ring and the conductive moving ring. The support member is fixedly connected to the handle assembly and includes a support ring sleeve and a first support ring cover covering the support ring sleeve. The first support ring cover and the support ring sleeve cooperate to form a chute. The conductive fixed ring is fixedly installed in the support ring sleeve, and the conductive moving ring is rotatably connected in the chute.

[0013] In some embodiments of the present utility model, the fixed component is the first support ring cover. A flexible circuit board is provided on the first support ring cover, and a conductive slideway is provided on the flexible circuit board; the rotating component is the conductive moving ring, and a conductive contact is provided on the conductive moving ring.

[0014] In some embodiments of the present utility model, the first support ring cover includes a support sleeve body and an extension ring plate. The extension ring plate is fixedly connected to the proximal region of the support sleeve body and abuts against the conductive moving ring; the flexible circuit board is fixed to the inner wall of the support sleeve body.

[0015] In some embodiments of the present utility model, the conductive contact is installed on the distal end face of the conductive moving ring.

[0016] In some embodiments of the present utility model, the fixed component is the conductive fixed ring, the rotating component is the conductive moving ring, and a conductive contact and a conductive slideway are provided between the opposite faces of the conductive fixed ring and the conductive moving ring.

[0017] In some embodiments of the present utility model, at least one conductive slideway is provided on the distal end face of the conductive fixed ring, and at least one conductive contact is correspondingly provided on the proximal end face of the conductive moving ring.

[0018] In some embodiments of the present utility model, an auxiliary fixed ring is further included. The auxiliary fixed ring is fixedly connected to the proximal side of the first support ring cover. The auxiliary fixed ring and the conductive moving ring are arranged opposite to each other at an interval, and a conductive contact and a conductive slideway are provided between the opposite faces of the auxiliary fixed ring and the conductive moving ring.

[0019] In some embodiments of the present utility model, at least one conductive slideway is provided on the proximal end face of the auxiliary fixed ring, and at least one conductive contact is correspondingly provided on the distal end face of the conductive moving ring.

[0020] In some embodiments of the present utility model, a conductive interface electrically connected to the conductive slideway is provided on the distal end face of the auxiliary fixed ring, and the conductive interface is adapted to plug in a lead connected to a control circuit board.

[0021] In some embodiments of the present utility model, the fixed component is a first circuit board fixedly connected to the handle assembly, the rotating component is a second circuit board fixedly connected to the rotating head housing, the first circuit board and the second circuit board are arranged opposite to each other at an interval, and conductive contacts and a conductive slideway are arranged between the opposite surfaces of the first circuit board and the second circuit board.

[0022] In some embodiments of the present utility model, the fixed component is a third circuit board fixedly connected to the handle assembly, the rotating component is the rotating head housing, a partial board surface of the third circuit board and the inner wall of the rotating head housing are arranged opposite to each other at an interval, and the conductive contacts and the conductive slideway are arranged between their opposite surfaces.

[0023] In some embodiments of the present utility model, the rotating head housing includes a first half-rotating housing and a second half-rotating housing which are symmetrically arranged, a flexible circuit board or a conductive slip ring is arranged on the first half-rotating housing, and a conductive slideway is arranged on the flexible circuit board or the conductive slip ring.

[0024] The technical solution of the present utility model has the following technical effects compared with the prior art:

[0025] In the surgical instrument provided by the present utility model, conductive contacts and a conductive slideway which are electrically connected to each other are arranged between a fixed component fixed relative to the handle assembly and a rotating component rotatable about the longitudinal axis. When the elongate body assembly is located in the first circumferential range, the conductive contacts and the conductive slideway between the fixed component and the rotating component are not in contact, and no electrical signal is output; when the elongate body assembly rotates to the second circumferential range, the conductive contacts and the conductive slideway between the fixed component and the rotating component are electrically connected, and an electrical signal is output; by the change of the electrical signal, the circumferential position change of the elongate body assembly and the end effector assembly can be obtained, especially the information of the switching from the first circumferential range to the second circumferential range. Furthermore, when performing the bending control, the control signal can be adjusted to enable the end effector assembly to perform the bending operation according to the set requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings, which will help to understand the purpose and advantages of the present utility model, wherein:

[0027] Figure 1 is a schematic structural diagram of a specific embodiment of the surgical instrument of the present utility model;

[0028] Figure 2A is a schematic diagram of a specific embodiment of the end effector assembly of the present utility model;

[0029] Figure 2B is an exploded view of a specific embodiment of the surgical instrument of the present utility model;

[0030] Figure 3 Partial cross-sectional view of the first specific embodiment of the surgical instrument of the present utility model;

[0031] Figure 4 Exploded view of the slip ring portion in the first specific embodiment of the surgical instrument of the present utility model;

[0032] Figure 5 Stereogram of the rotary drive member in the first specific embodiment of the surgical instrument of the present utility model;

[0033] Figure 6 Exploded view of the surgical instrument of the present utility model in the first specific embodiment;

[0034] Figure 7 Assembly drawing of the slip ring portion in the second specific embodiment of the surgical instrument of the present utility model;

[0035] Figure 8 Exploded view of the slip ring portion in the second specific embodiment of the surgical instrument of the present utility model;

[0036] Figure 9 Assembly drawing of the slip ring portion in the third specific embodiment of the surgical instrument of the present utility model;

[0037] Figure 10 Exploded view of the slip ring portion in the third specific embodiment of the surgical instrument of the present utility model;

[0038] Figure 11 Stereogram of the conductive slip ring in the third specific embodiment of the surgical instrument of the present utility model;

[0039] Figure 12 Assembly drawing of the slip ring portion in the fourth specific embodiment of the surgical instrument of the present utility model;

[0040] Figure 13 Exploded view of the slip ring portion in the fourth specific embodiment of the surgical instrument of the present utility model;

[0041] Figure 14 Exploded view of the slip ring portion in the fourth specific embodiment of the surgical instrument of the present utility model;

[0042] Figure 15 Partial view of the fifth specific embodiment of the surgical instrument of the present utility model;

[0043] Figure 16 Partial view of the fifth specific embodiment of the surgical instrument of the present utility model;

[0044] Figure 17Structural diagram of the second circuit board in the fifth embodiment of the surgical instrument of the present utility model;

[0045] Figure 18 Structural diagram of the first circuit board in the fifth embodiment of the surgical instrument of the present utility model;

[0046] Figure 19 Partial view of the sixth specific embodiment of the surgical instrument of the present utility model;

[0047] Figure 20 Partial sectional view of the sixth specific embodiment of the surgical instrument of the present utility model;

[0048] Figure 21 Structural diagram of the rotating head housing in the sixth embodiment of the surgical instrument of the present utility model. Specific embodiments

[0049] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0050] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0051] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0052] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0053] In various embodiments of the present utility model, the "distal end / side" refers to the end of the surgical instrument that is away from the operator during operation, and the "proximal end / side" refers to the end / side of the surgical instrument that is close to the operator when the surgical instrument is being operated.

[0054] The following is a specific embodiment of the surgical instrument. Generally speaking, the embodiments of the surgical instrument described herein are endoscopic surgical cutting and anastomosis instruments. However, it should be noted that the surgical instrument can also be a non-endoscopic surgical cutting and anastomosis instrument, such as an open surgical instrument for open surgery.

[0055] In various embodiments of the present utility model, the "distal end / side" refers to the end of the surgical instrument that is away from the operator during operation, and the "proximal end / side" refers to the end / side of the surgical instrument that is close to the operator when the surgical instrument is being operated.

[0056] The following is a specific embodiment of the surgical instrument. Generally speaking, the embodiments of the surgical instrument described herein are endoscopic surgical cutting and anastomosis instruments. However, it should be noted that the surgical instrument can also be a non-endoscopic surgical cutting and anastomosis instrument, such as an open surgical instrument for open surgery.

[0057] Specifically, Figure 1 The illustrated surgical instrument 100 includes a handle assembly 10, an elongate body assembly 20, and an end effector assembly 30 that are connected in sequence from proximal to distal. Among them, the end effector assembly 30 is used to operate tissues to perform specific surgical operations, for example, surgical operations such as clamping, suturing / anastomosing, and cutting of tissues. The elongate body assembly 20 defines a longitudinal axis C of the surgical instrument and is rotatably connected to the handle assembly 10 through a rotary head assembly 40. At least a part of the handle assembly 10 is held by the operator so that the operator can manipulate the surgical instrument to finally drive the end effector assembly 30 to act. When the rotary head assembly 40 is operated to rotate about the longitudinal axis C of the surgical instrument 100, it can drive the elongate body assembly 20 and the end effector assembly 30 to rotate relative to the handle assembly 10 together.

[0058] Refer to Figure 2AAs shown, the end effector assembly 30 includes a proximal body portion 30a and a distal effector portion 30b. The proximal body portion 30a and the distal effector portion 30b are pivotally connected by a joint assembly 30c. The proximal body portion 30a is detachably connected to the distal end of the elongate body assembly 20. The distal effector portion 30b includes a cartridge assembly 31 and an anvil assembly 32. The cartridge assembly 31 and the anvil assembly 32 are movable relative to each other to close the jaws for clamping tissue between the jaws. In a specific embodiment, the anvil assembly 32 of the end effector assembly 30 can be operably pivoted towards the cartridge assembly 31 until the jaws of the end effector assembly 30 are closed to clamp tissue; the anvil assembly 32 pivots in a direction away from the cartridge assembly 31 until the jaws of the end effector assembly 30 are opened to release the tissue. As an alternative embodiment, the cartridge assembly 31 of the end effector assembly 30 can be operably pivoted towards the pivoting anvil assembly 32 until the jaws of the end effector assembly 30 are closed to clamp tissue; and the cartridge assembly 31 is operably pivoted in a direction away from the cartridge assembly 31 until the jaws of the end effector assembly 30 are opened to release the tissue. Further, a movable firing member for performing surgical actions is provided within the end effector assembly 30. The firing member can be operably reciprocated. For example, when the firing member is driven to move from the proximal end to the distal end, corresponding surgical operations are performed, such as cutting and anastomosing the tissue.

[0059] To achieve a set angle of bending of the end effector assembly 30 relative to the longitudinal axis C of the elongate body assembly 20, the surgical instrument 100 further includes a bending drive assembly for driving the joint assembly 30c to bend and a bending transmission assembly. The bending transmission assembly includes a bending member disposed on the side of the proximal body portion 30a of the end effector assembly 30. The bending drive assembly includes a bending control portion mounted on the rotary head assembly 40 or the handle assembly 10 and a bending drive rod 22 located within the elongate body housing 21. The bending drive rod 22 is connected to the bending member. When the operator manipulates the bending control portion, the bending drive rod 22 can be driven to move. Specifically, in some embodiments, the bending operation of the surgical instrument 100 is completed by manually operating the bending control portion. The bending control portion is a bending knob (not shown in the figure) disposed on the rotary head assembly 40. When the bending knob is rotated clockwise from the initial position, the bending drive rod 22 drives the bending member to move distally, achieving a leftward bend of the distal effector portion 30b relative to the longitudinal axis C; when the bending knob is rotated counterclockwise from the initial position, the bending drive rod 22 drives the bending member to move proximally, achieving a rightward bend of the distal effector portion 30b relative to the longitudinal axis C; and vice versa. In an alternative embodiment, for an electrosurgical instrument, the bending control portion is a bending control button 13 disposed on the handle housing 11. The bending control button 13 can be, for example Figure 1The shown push-twist form has indications of bending in a first direction (e.g., the control end effector 30 is bent to the left) and a second direction (e.g., the control end effector 30 is bent to the right). When the bending control knob 13 is pushed to bend to the left, the bending drive rod 22 drives the bending member to move distally, realizing the leftward bending of the distal end effector 30b relative to the longitudinal axis C; when the bending control knob 13 is pushed to bend to the right, the bending drive rod 22 drives the bending member to move proximally, realizing the rightward bending of the distal end effector 30b relative to the longitudinal axis C.

[0060] As Figure 1 、 Figure 2B shown, the handle assembly 10 includes a handle housing 11 that can be held by a user. As Figure 2B shown, the handle housing 11 includes a first half housing 11a and a second half housing 11b. The first half housing 11a and the second half housing 11b can be detachably connected by means such as snap connection and fastener connection. The handle housing 11 is generally in a T shape as a whole, including a main body portion extending along the longitudinal axis direction C and a gripping portion extending along a direction substantially perpendicular to the longitudinal axis C or at an inclined angle relative to the longitudinal axis C. An installation space for accommodating control components such as the drive mechanism 18 and the control circuit board 17 is formed inside the main body portion and the gripping portion. Among them, the drive mechanism 18 drives the transmission rod of the elongate body assembly 20 to drive the firing member of the end effector 30 to perform reciprocating motion, thereby realizing the operations of closing and opening the jaws of the end effector 30, as well as cutting and anastomosing the tissue clamped in the jaws. The drive mechanism 18 and control components such as the control circuit board 17 are installed on the support frame 12 and are encapsulated inside the handle housing 11 by the first half housing 11a and the second half housing 11b. In an alternative embodiment, the drive mechanism 18 realizes the closing and opening operations of the jaws of the end effector 30 by driving the elongate body assembly 20, and the drive mechanism 18 drives the transmission rod of the elongate body assembly 20, and further drives the firing member of the end effector 30 to perform reciprocating motion to cut and anastomose the tissue clamped in the jaws.

[0061] In a specific embodiment, a trigger is provided on the handle assembly 10, and the user operates the trigger to operate the end effector 30 to perform closing and firing actions; or, in an alternative embodiment, the surgical instrument can also manipulate the end effector 30 to perform closing and / or firing actions by means such as push-twist and buttons provided on the handle housing 11; or, in an alternative embodiment, the surgical instrument can also manipulate the jaws of the end effector to open by means such as a trigger, push-twist, and buttons provided on the handle housing 11 to release the tissue.

[0062] In the surgical instrument 100 described in the embodiment of the present invention, as Figure 2Band Figure 3 As shown, the rotating head assembly 40 includes a rotating head housing 41 fixedly connected to the proximal end of the elongate body assembly 20, and a slip ring portion 42 mounted between the handle assembly 10 and the rotating head housing 41 to enable the rotation of the rotating head housing 41 relative to the handle assembly 10, while enabling signal and / or energy transmission between the handle assembly 10 and the elongate body assembly 20 or the end effector assembly 30. In some embodiments, the rotation can be unrestricted rotation, i.e., it can rotate more than 360°. The slip ring portion 42 is clamped and fixed by an annular wall at the distal end of the handle housing 11. As Figure 4 shown, the slip ring portion 42 includes a conductive stationary ring 421, a conductive rotating ring 422, and a support member for supporting the conductive stationary ring 421 and the conductive rotating ring 422. Among them, the conductive rotating ring 422 is parallel to and disposed with a gap from the conductive stationary ring 421, and is electrically connected through a conductive structure (such as conductive contacts and conductive slides) therebetween to achieve signal and / or energy transmission; the conductive rotating ring 422 can rotate freely relative to the conductive rotating ring 422. A rotation driving member 43 is disposed in the rotating head housing 41, and the rotation driving member 43 is connected to the conductive rotating ring 422 to drive it to rotate around the longitudinal axis C along with the rotating head housing 41. Specifically, as Figure 5 shown, the rotation driving member 43 includes a mounting ring portion 431 and a driving insertion portion 432. The mounting ring portion 431 is inserted and fixed in an insertion groove on the inner wall of the rotating head housing 41. The driving insertion portion 432 is fixed to one side surface of the mounting ring portion 431 and extends proximally. The end of the driving insertion portion 432 is adapted to be inserted and mated with the conductive rotating ring 422. For example, a plugging groove hole 422a is provided on the distal end surface of the conductive rotating ring 422, and a plugging piece 4321 adapted to cooperate with the plugging groove hole 422a is provided at the end of the driving insertion portion 432. When the rotating head housing 41 is controlled to rotate, the rotation driving member 43 can drive the conductive rotating ring 422 to rotate through the driving insertion portion 432.

[0063] Further, as Figure 4 shown, the support member includes a support ring sleeve 423 located proximally, a first support ring cover 424, and a second support ring cover 427. The first support ring cover 424 covers the distal side of the support ring sleeve 423, and the second support ring cover 427 covers the proximal side of the support ring sleeve 423. The support ring sleeve 423 and the first support ring cover 424 are clamped in an annular cavity formed by the first half housing 11a and the second half housing 11b in the distal region. The first support ring cover 424 and the support ring sleeve 423 cooperate to form a chute. The conductive stationary ring 421 is fixedly installed in the support ring sleeve 423, and the conductive rotating ring 422 is rotatably connected in the chute.

[0064] As described above, the distal end effector 30b can be operated to articulate about the articulation assembly 30c and can also rotate relative to the handle assembly 10 together with the elongate body assembly 20. When the end effector assembly 30 is in the position as shown in Figure 1 , that is, at this time, the cartridge assembly 31 of the distal end effector 30b is located above the anvil assembly 32, and the bend control knob 13 is arranged to be intuitive for the operator, that is, pushing upward to operate the distal end effector 30b to bend to the left, and pushing downward to operate the distal end effector 30b to bend to the right. Even after the elongate body assembly 20 and the end effector assembly 30 have been rotated no more than 90 degrees to the right or left, the cartridge assembly 31 is generally still located above the anvil assembly 32 (e.g., obliquely above), and this arrangement is intuitive. However, when the elongate body assembly 20 and the end effector assembly 30 are operated to rotate more than 90 degrees in either direction, the cartridge assembly 31 is gradually rotated to be located below the anvil assembly 32 (e.g., obliquely below). At this time, operating the bend control knob 13 becomes counterintuitive for the operator, that is, when pushing the bend control knob 13 upward, the distal end effector 30b appears to the operator to be performing a rightward bending operation, and when pushing the bend control knob 13 downward, the distal end effector 30b appears to the operator to be performing a leftward bending operation, which is contrary to the operator's expected operation. Accordingly, the control system of the surgical instrument 100 according to the embodiment of the present invention is configured to be able to jump the way the surgical instrument responds to the bend control knob 13 when the elongate body assembly 20 and the end effector assembly 30 have been rotated 90 degrees in either direction. In such cases, the bend control knob 13 becomes: pushing upward to perform an articulation movement to the right, and pushing downward to perform an articulation movement to the left. For this purpose, as described in more detail below, the surgical instrument 100 is configured to be able to detect the circumferential rotational position of the elongate body assembly 20 relative to the handle assembly 10, that is, the surgical instrument 100 is configured to be able to detect whether the distal end effector 30b is at least partially flipped / inverted relative to the handle assembly 10 (e.g., relative to the position shown in Figure 1 , the end effector assembly 30 is operated to rotate 90 degrees in either direction), and then enter an alternative operation control mode, in which the responsiveness of the surgical instrument 100 to the bend control knob 13 has been reversed. This arrangement can make the surgical instrument 100 easier to use in various situations. Of course, it can be understood that the operation mode of the bend control knob 13 is not limited to pushing upward and downward, and can also be pushed laterally or obliquely, or can be pressed like a seesaw, as long as it can achieve the bend control operation.

[0065] When the rotating head assembly 40 is operated to rotate about the longitudinal axis C of the surgical instrument 100, it can drive the elongate body assembly 20 and the end effector assembly 30 to rotate together. When the elongate body assembly 20 and the end effector assembly 30 are simultaneously rotated to the first circumferential position, the cartridge assembly 31 of the distal end effector 30b in the end effector assembly 30 is located on the upper side, and the anvil assembly 32 is located on the lower side. Based on this first circumferential position, within the range swept by operating the end effector assembly 30 to rotate 90 degrees to the left or right (here defined as the first circumferential range), the cartridge assembly 31 is always located above the anvil assembly 32; when the elongate body assembly 20 and the end effector assembly 30 are rotated 180 degrees to the second circumferential position, the cartridge assembly 31 of the distal end effector 30b in the end effector assembly 30 is located on the lower side, and the anvil assembly 32 is located on the upper side. Based on this second circumferential position, within the range swept by operating the end effector assembly 30 to rotate 90 degrees to the left or right (here defined as the second circumferential range), the cartridge assembly 31 is always located below the anvil assembly 32. Between the first circumferential position and the second circumferential position Central angle of 180 degrees . To ensure that whether the elongate body assembly 20 and the end effector assembly 30 are in the first circumferential range or the second circumferential range, when the operator triggers the bending control button 13 to bend in the first direction, the end effector assembly 30 can always be seen by the operator to bend in the first direction. In the surgical instrument 100 according to the embodiment of the present invention, a conductive contact A and a conductive slideway B that are electrically connected to each other are provided between a fixed part fixed relative to the handle assembly 10 and a rotating part that can be operably rotated about the longitudinal axis C. When the elongate body assembly 20 is in the first circumferential range, the conductive contact A and the conductive slideway B between the fixed part and the rotating part are not in contact, and no electrical signal is output; when the elongate body assembly 20 rotates to the second circumferential range, the conductive contact A and the conductive slideway B between the fixed part and the rotating part are electrically connected, and an electrical signal is output; by obtaining the circumferential position change of the elongate body assembly 20 and the end effector assembly 30 through the change of the electrical signal, and then adjusting the control signal during bending control, the end effector assembly can be bent according to the set requirements. For example, when the elongate body assembly 20 and the end effector are in the first circumferential range, triggering the left bending trigger key of the bending control button 13 causes the end effector assembly 30 to bend to the left. When the elongate body assembly 20 and the end effector are in the second circumferential range, triggering the left bending trigger key of the bending control button 13 causes the end effector assembly to still bend to the left.

[0066] The following shows specific embodiments of multiple fixed parts and rotating parts of the present invention.

[0067] As Figures 3 - 6The first embodiment is shown. In this embodiment, the fixed component is a flexible circuit board 14 mounted on the annular wall at the distal end of the handle housing 11. Among them, the flexible circuit board 14 is electrically connected to the control circuit board 17 in the handle housing 11 through leads to achieve the transmission of electrical signals. More specifically, the flexible circuit board 14 is mounted on the inner wall of one half housing (for example, the first half housing 11a) of the handle housing 11. The flexible circuit board 14 is an arc-shaped circuit board with the longitudinal axis C as the rotation center line, and the conductive slideway B is arranged thereon along the circumferential direction. The radian of the conductive slideway B is π. The rotating component is a rotary driving member 43, and the conductive contact A is arranged on the driving insertion portion 432 of the rotary driving member 43.

[0068] When the elongate body assembly 20 and the end effector assembly 30 are located in the first circumferential range, the conductive contact A on the rotary driving member 43 contacts the inner wall of the second half housing 11b of the handle housing 11, and no electrical signal is output. When the rotary driving member 43 rotates with the rotary head housing 41 to the second circumferential range, the conductive contact A on the rotary driving member 43 contacts the flexible circuit board 14 located on the inner wall of the first half housing 11a of the handle housing 11, and an electrical signal is output. Furthermore, the control circuit board 17 obtains the circumferential position changes of the elongate body assembly 20 and the end effector assembly 30.

[0069] Figures 7 - 8 The second embodiment is shown. In this embodiment, the fixed component is a flexible circuit board 425 mounted on the first support ring cover 424, and the conductive slideway B is arranged on the flexible circuit board 425. More specifically, the first support ring cover 424 includes a support sleeve body 4241 and an extension ring plate 4242 extending radially along the annular support sleeve body 4241. The extension ring plate 4242 is fixedly connected to the proximal region of the support sleeve body 4241 and abuts against the conductive moving ring 422. The flexible circuit board 425 is fixed on the inner wall of the support sleeve body 4241. The flexible circuit board 425 is provided with the conductive slideway B along the circumferential direction, and the radian of the conductive slideway B is π. The rotating component is the conductive moving ring 422, and the conductive contact A is arranged on the distal end face of the conductive moving ring 422.

[0070] When the elongate body assembly 20 and the end effector assembly 30 are located in the first circumferential range, the conductive contact A on the conductive moving ring 422 contacts the inner wall of the side of the first support ring cover 424 where the flexible circuit board 425 is not provided, and no electrical signal is output. When the rotary driving member 43 rotates with the rotary head housing 41 to the second circumferential range, the conductive contact A on the conductive moving ring 422 contacts the flexible circuit board 425 located on the inner wall of the first support ring cover 424, and an electrical signal is output. Furthermore, the control circuit board 17 obtains the circumferential position changes of the elongate body assembly 20 and the end effector assembly 30.

[0071] Figures 9 - 11 The third embodiment is shown. In this embodiment, the fixed component is the conductive stationary ring 421, the rotating component is the conductive rotating ring 422, and conductive contacts A and a conductive slideway B are arranged between the opposite surfaces of the conductive stationary ring 421 and the conductive rotating ring 422 on the basis of the original conductive structure. Among them, the conductive slideway B is an arc-shaped slideway with the longitudinal axis C as the rotation center line, and the radian of the conductive slideway B is π. More specifically, as Figure 10 , Figure 11 shown, the conductive slideway B is arranged on the conductive stationary ring 421, and the conductive contact A is arranged on the conductive rotating ring 422. In other embodiments, the conductive slideway B can also be arranged on the conductive rotating ring 422, and the conductive contact A is arranged on the conductive stationary ring 421.

[0072] Furthermore, in order to improve the conductive reliability, the identification of the above-mentioned rotational position can also be achieved by arranging multiple conductive slideways B and multiple conductive contacts A. Among them, the radian of each of the multiple conductive slideways B is π and the bending directions are the same. Among them, the conductive stationary ring 421 is provided with a lead wire for electrically connecting with the conductive contact A or the conductive slideway B, and it is connected to the control circuit board 17 of the handle assembly 10.

[0073] When the elongate body assembly 20 and the end effector assembly 30 are located in the first circumferential range, the conductive contact A on the conductive rotating ring 422 contacts the area of the conductive stationary ring 421 where the conductive slideway B is not arranged, and no electrical signal is output; when the rotary drive member 43 rotates with the rotary head housing 41 to the second circumferential range, the conductive contact A on the conductive rotating ring 422 contacts the conductive slideway B of the conductive stationary ring 421 to achieve circuit conduction and output an electrical signal; thereby enabling the control circuit board 17 to obtain the circumferential position change of the elongate body assembly 20 and the end effector assembly 30.

[0074] Figures 12 - 14 The fourth embodiment is shown. In this embodiment, the slip ring portion 42 further includes an auxiliary stationary ring 426. The auxiliary stationary ring 426 is fixedly connected to the near side of the first support ring cover 424. The auxiliary stationary ring 426 and the conductive rotating ring 422 are arranged at intervals opposite to each other, and conductive contacts A and a conductive slideway B are arranged between the opposite surfaces of the auxiliary stationary ring 426 and the conductive rotating ring 422. For example, as Figure 14 , Figure 13 shown, the conductive slideway B is arranged on the proximal end surface of the auxiliary stationary ring 426, and the conductive contact A is arranged on the distal end surface of the conductive rotating ring 422. A conductive interface 4261 electrically connected to the conductive slideway B is provided on the distal end surface of the auxiliary stationary ring 426, and the conductive interface 4261 is adapted to plug in a lead wire connected to the control circuit board 17.

[0075] To improve the conductive reliability, the recognition of the above-mentioned rotational positions can also be achieved by setting multiple conductive sliding tracks B and multiple conductive contacts A. As Figure 14 shown, two conductive sliding tracks B with the same bending direction and a radian of π are provided on the proximal end surface of the auxiliary fixed ring 426, and two of the conductive contacts A are correspondingly provided on the distal end surface of the conductive moving ring 422.

[0076] When the slender body assembly 20 and the end effector assembly 30 are located in the first circumferential range, the conductive contact A on the conductive moving ring 422 contacts the area of the auxiliary fixed ring 426 where no conductive sliding track B is provided, and no electrical signal is output; when the rotary drive member 43 rotates with the rotary head housing 41 to the second circumferential range, the conductive contact A on the conductive moving ring 422 contacts the conductive sliding track B of the auxiliary fixed ring 426 to achieve circuit conduction and output an electrical signal; thereby enabling the control circuit board 17 to obtain the circumferential position changes of the slender body assembly 20 and the end effector assembly 30.

[0077] Figures 15 - 18 The fifth embodiment is shown. In this embodiment, the fixed component is the first circuit board 15 fixedly connected to the handle assembly 10. Specifically, the first circuit board 15 is fixed in the distal region of the support frame 12, and the rotating component is the second circuit board 44 fixedly connected to the rotary head housing 41. The first circuit board 15 and the second circuit board 44 are arranged opposite to each other at an interval, and conductive contacts A and conductive sliding tracks B are provided between the opposite surfaces of the first circuit board 15 and the second circuit board 44. For example, as Figure 17 、 Figure 18 shown, the conductive sliding track B is provided on the proximal end surface of the second circuit board 44, and the radian of the conductive sliding track B is π. The conductive contact A is provided on the distal end surface of the first circuit board 15. The first circuit board 15 and the control circuit board 17 are electrically connected by leads.

[0078] When the slender body assembly 20 and the end effector assembly 30 are located in the first circumferential range, the conductive contact A on the first circuit board 15 contacts the area of the second circuit board 44 where no conductive sliding track B is provided, and no electrical signal is output; when the rotary drive member 43 rotates with the rotary head housing 41 to the second circumferential range, the conductive contact A on the first circuit board 15 contacts the conductive sliding track B of the second circuit board 44 to achieve circuit conduction and output an electrical signal; thereby enabling the control circuit board 17 to obtain the circumferential position changes of the slender body assembly 20 and the end effector assembly 30.

[0079] Figures 19 - 21 The sixth embodiment is shown. In this embodiment, the fixed component is the third circuit board 16 fixedly connected to the handle assembly 10. Specifically, as Figure 20As shown, the third circuit board 16 is fixed to the distal region of the support frame 12. The rotating member is the rotating head housing 41. A part of the board surface of the third circuit board 16 is disposed opposite to and spaced from the annular inner wall of the rotating head housing 41. Conductive contacts A and a conductive slideway B are provided between the opposing surfaces of the third circuit board 16 and the rotating head housing 41.

[0080] Among them, as Figure 21 shown, the rotating head housing 41 includes a first half-rotating housing 41a and a second half-rotating housing 41b which are symmetrically arranged. A flexible circuit board or a conductive slip ring 45 is provided on the first half-rotating housing 41a. The conductive slideway B is provided on the flexible circuit board or the conductive slip ring 45, and the radian of the conductive slideway B is π. The conductive contact A is provided on the board surface of the third circuit board 16 that is disposed opposite to the inner wall of the rotating head housing 41. Moreover, the third circuit board 16 and the control circuit board 17 are electrically connected by leads.

[0081] When the elongate body assembly 20 and the end effector assembly 30 are located within the first circumferential range, the conductive contact A on the third circuit board 16 contacts the second half-rotating housing 41b, and no electrical signal is output. When the rotation driving member 43 rotates with the rotating head housing 41 to the second circumferential range, the conductive contact A on the first circuit board 15 contacts the conductive slideway B located on the first half-rotating housing 41a to achieve circuit conduction and output an electrical signal. Thus, the control circuit board 17 obtains the circumferential position changes of the elongate body assembly 20 and the end effector assembly 30.

[0082] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A surgical instrument, comprising: A handle assembly; A slender body assembly rotatably connected to the handle assembly through a rotating head assembly, the slender body assembly defining a longitudinal axis; An end effector assembly operably connected to the distal end of the slender body assembly, including a distal effector, the distal effector being operable to bend relative to the longitudinal axis; Characterized in that it further comprises: A fixed component fixedly arranged in the rotating head assembly or the handle assembly relative to the handle assembly; A rotating component operably rotatable relative to the fixed component about the longitudinal axis; Wherein, between the fixed component and the rotating component, there are electrically conductive contacts and an electrically conductive slideway that are electrically connected to each other. When the slender body assembly is within a first circumferential range, the electrically conductive contacts and the electrically conductive slideway between the fixed component and the rotating component are not in contact; when the slender body assembly rotates to a second circumferential range, the electrically conductive contacts and the electrically conductive slideway between the fixed component and the rotating component are electrically connected.

2. The surgical instrument according to claim 1, wherein The electrically conductive slideway is an arc-shaped slideway with the longitudinal axis as the rotation center line.

3. The surgical instrument according to claim 1, characterized in that, The rotating head assembly includes: A rotating head housing; A slip ring part, the slip ring part includes a fixed electrically conductive ring fixed relative to the handle assembly and a movable electrically conductive ring parallel to and spaced from the fixed electrically conductive ring, the movable electrically conductive ring being electrically connected to the fixed electrically conductive ring; A rotation driving member fixed to the rotating head housing and connected to the movable electrically conductive ring to drive it to rotate about the longitudinal axis.

4. The surgical instrument according to claim 3, characterized in that, The handle assembly includes a handle housing, a circumferential wall is provided at the distal end of the handle housing, the fixed component is a flexible circuit board mounted on the circumferential wall of the handle housing, and the electrically conductive slideway is provided on the flexible circuit board; the rotating component is a rotation driving member, and the electrically conductive contacts are provided on the rotation driving member.

5. The surgical instrument according to claim 4, wherein The handle housing includes a first half shell and a second half shell that are symmetrically arranged, and the flexible circuit board is mounted on the inner side wall of the first half shell.

6. The surgical instrument according to claim 3, wherein, The rotation driving member includes a mounting ring part and a driving insertion part, the mounting ring part is inserted and fixed in an insertion groove on the inner wall of the rotating head housing, the driving insertion part is fixed on one side surface of the mounting ring part and extends proximally, and the end of the driving insertion part is adapted to cooperate with the movable electrically conductive ring; the electrically conductive contacts are provided on the driving insertion part.

7. The surgical instrument according to claim 3, wherein The slip ring part further includes a support member for supporting the fixed electrically conductive ring and the movable electrically conductive ring, the support member is fixedly connected to the handle assembly, and it includes a support ring sleeve and a first support ring cover covering the support ring sleeve, the first support ring cover and the support ring sleeve cooperate to form a chute, the fixed electrically conductive ring is fixedly installed in the support ring sleeve, and the movable electrically conductive ring is rotatably connected in the chute.

8. The surgical instrument according to claim 7, wherein, The fixed component is the first support ring cover, a flexible circuit board is provided on the first support ring cover, and the electrically conductive slideway is provided on the flexible circuit board; the rotating component is the movable electrically conductive ring, and the electrically conductive contacts are provided on the movable electrically conductive ring.

9. The surgical instrument according to claim 8, wherein The first support ring cover includes a support sleeve body and an extension ring plate. The extension ring plate is fixedly connected to the proximal region of the support sleeve body and abuts against the conductive moving ring. The flexible circuit board is fixed to the inner wall of the support sleeve body.

10. The surgical instrument according to claim 9, wherein, The conductive contact is mounted on the distal end face of the conductive moving ring.

11. The surgical instrument according to claim 7, wherein, The fixed component is a conductive fixed ring, and the rotating component is a conductive moving ring. A conductive contact and a conductive slideway are provided between the opposite faces of the conductive fixed ring and the conductive moving ring.

12. The surgical instrument according to claim 11, wherein At least one conductive slideway is provided on the distal end face of the conductive fixed ring, and at least one conductive contact is correspondingly provided on the proximal end face of the conductive moving ring.

13. A surgical instrument according to claim 7, wherein, It further includes an auxiliary fixed ring. The auxiliary fixed ring is fixedly connected to the proximal side of the first support ring cover. The auxiliary fixed ring and the conductive moving ring are arranged opposite to each other with a gap therebetween. A conductive contact and a conductive slideway are provided between the opposite faces of the auxiliary fixed ring and the conductive moving ring.

14. A surgical instrument according to claim 13, wherein, At least one conductive slideway is provided on the proximal end face of the auxiliary fixed ring, and at least one conductive contact is correspondingly provided on the distal end face of the conductive moving ring.

15. A surgical instrument according to claim 14, characterized in that, A conductive interface electrically connected to the conductive slideway is provided on the distal end face of the auxiliary fixed ring. The conductive interface is adapted to plug in a lead connected to the control circuit board.

16. The surgical instrument according to claim 3, wherein The fixed component is a first circuit board fixedly connected to the handle assembly, and the rotating component is a second circuit board fixedly connected to the rotating head housing. The first circuit board and the second circuit board are arranged opposite to each other with a gap therebetween. A conductive contact and a conductive slideway are provided between the opposite faces of the first circuit board and the second circuit board.

17. The surgical instrument according to claim 3, wherein The fixed component is a third circuit board fixedly connected to the handle assembly, and the rotating component is the rotating head housing. A part of the board surface of the third circuit board and the inner wall of the rotating head housing are arranged opposite to each other with a gap therebetween, and a conductive contact and a conductive slideway are provided between their opposite faces.

18. The surgical instrument according to claim 17, wherein, The rotating head housing includes a first half-rotating housing and a second half-rotating housing which are symmetrically arranged. A flexible circuit board or a conductive slip ring is provided on the first half-rotating housing, and a conductive slideway is provided on the flexible circuit board or the conductive slip ring.

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