CN108065978B - Surgical operation instrument - Google Patents
Surgical operation instrument Download PDFInfo
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- CN108065978B CN108065978B CN201610989901.7A CN201610989901A CN108065978B CN 108065978 B CN108065978 B CN 108065978B CN 201610989901 A CN201610989901 A CN 201610989901A CN 108065978 B CN108065978 B CN 108065978B
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- 239000012636 effector Substances 0.000 claims abstract description 60
- 238000005452 bending Methods 0.000 claims description 48
- 230000005540 biological transmission Effects 0.000 claims description 32
- 230000014759 maintenance of location Effects 0.000 claims 3
- 238000002788 crimping Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000013011 mating Effects 0.000 description 6
- 230000004323 axial length Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of medical instruments, and discloses a surgical instrument which comprises an end effector, an elongated body and a handle part; the two ends of the elongated body are respectively connected with the end effector and the handle part, and the handle part comprises: a handle housing; a rotator head disposed at a distal end of the handle portion and reciprocally movable along a length direction of the elongated body; an elastic holding assembly including an elastic holding member provided between the rotary head and the handle housing, and at least one engagement portion provided on the handle housing; the elastic retainer is axially locked with the rotary head and can reciprocate along the length direction of the elongated body to selectively cooperate with the engagement portion of the handle housing. The structural stability and the working stability among the components are higher, and the safety performance of the surgical instrument can be further improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a surgical instrument.
Background
The surgical instrument under the endoscope has small operation wound to the patient and good operation effect, and can greatly reduce the pain brought to the patient in operation.
The surgical instrument includes an operating handle having a fixed handle for an operator to grasp, and an end effector connected to a distal end of the operating handle (proximal end at an end closer to the user when operated, and distal end at an end farther from the user) through the elongated body.
At present, surgical instruments have three kinds of functions of bending, rotation and closure, can adjust the operation angle and the operation position of end effector, in order to guarantee the security when performing the operation, wherein, need to guarantee that the instrument can be stable carry out bending operation or rotation operation, simultaneously need not can carry out rotation operation when carrying out bending operation, can not carry out bending operation when carrying out rotation operation, neither can carry out bending operation when carrying out closure operation and can not carry out rotation operation, and then improve surgical medical instrument's operability, can avoid the maloperation to bring the risk of accident for the operation simultaneously.
Disclosure of Invention
The invention provides a surgical instrument, which has higher working stability and can further improve the safety performance of the surgical instrument.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a surgical instrument comprising an end effector, an elongated body, and a handle portion, the elongated body having ends coupled to the end effector and the handle portion, respectively, the handle portion comprising: a handle housing; a rotator head disposed at a distal end of the handle portion and reciprocally movable along a length of the elongate body; an elastic holding assembly including an elastic holding member provided between the rotary head and the handle housing, and at least one engagement portion provided on the handle housing; the elastic retainer is axially locked with the rotary head and can reciprocate along the length direction of the elongated body to selectively cooperate with the engagement portion of the handle housing.
Preferably, the elastic holder is of annular configuration with an opening.
Preferably, the inner surface and the outer surface of the elastic holder are curved in a circular arc, and at least one of the curvatures and curvature axes of the inner surface and the outer surface is different.
Preferably, the elastic retainer is of symmetrical structure, and the curvature axes of the inner surface and the outer surface of the elastic retainer are both located on the symmetry plane of the elastic retainer.
Preferably, the inner surface of the resilient holding member is provided with at least one protrusion, and the engagement portion of the handle housing is provided as a groove which mates with the protrusion.
Preferably, the protrusions are provided in two and are located at the ends of the inner surface of the elastic holder, respectively.
Preferably, the inner surface of the elastic holder is provided with at least one catching groove, and the engaging portion of the handle housing is provided as a protrusion to be engaged with the catching groove.
Preferably, the number of the clamping grooves is two, and the clamping grooves are respectively positioned at the end parts of the inner surface of the elastic retainer.
Preferably, the handle portion further includes a bend transmission assembly, the swivel head selectively cooperating with the bend transmission assembly to drive the end effector to bend.
Preferably, the handle portion further comprises a rotating sleeve disposed at a distal end of the handle portion and in circumferential locking connection with the elongate body.
Preferably, teeth are provided on the rotating sleeve and the rotating head, respectively, the rotating head being selectively engageable with the rotating sleeve by the teeth.
Optionally, the handle portion includes a locking assembly including at least one sliding tooth reciprocally movable along the length of the elongate body to selectively mate with the anti-rotation tooth; the sliding teeth are axially and fixedly arranged in the rotating head, can rotate relative to the rotating head and are locked with the handle shell in the circumferential direction; the anti-rotation teeth are fixedly arranged at the proximal end of the slender body.
Preferably, the handle portion includes a closure trigger pivotally mounted on the handle housing and coupled to a closure drive assembly disposed within the handle housing, through which the elongate body is driven to reciprocate to open or close the end effector, and a closure lockout assembly rigidly coupled to the closure drive assembly, the closure lockout assembly being movable distally under the urging of the closure drive assembly when the closure trigger is closed.
Preferably, the closing locking component is provided with a safety piece, the safety piece is arranged between the rotation stopping teeth and the bending transmission component, and the safety piece can push the rotation stopping teeth to move towards the far end when moving towards the far end; or the anti-rotation teeth and the sliding teeth can be pushed to move distally when the rupture disc moves distally.
Optionally, the handle portion includes a locking assembly including a sliding tooth reciprocally movable along a length of the elongated body to selectively engage the anti-rotation tooth, the sliding tooth being fixedly circumferentially sleeved on a proximal end of the elongated body, and a distal end of the sliding tooth being provided with a flange for snap-fit engagement with the rotator head, the proximal end of the sliding tooth being provided with a plurality of teeth engageable with the anti-rotation tooth when the sliding tooth is moved proximally, the anti-rotation tooth being fixedly mounted within the handle portion.
Preferably, the handle portion includes a closure trigger pivotally mounted on the handle housing and coupled to a closure drive assembly disposed within the handle housing, the closure trigger being reciprocally movable by the closure drive assembly to open or close the end effector closure lock assembly in rigid engagement with the closure drive assembly, the closure lock assembly being movable distally under the urging of the closure drive assembly when the closure trigger is closed, the closure lock assembly being a closure lock tooth disposed on the elongated body, the closure lock tooth being disposed proximal of the sliding tooth.
Drawings
FIG. 1 is a schematic view of a surgical instrument according to an embodiment of the present invention;
FIG. 2 is a schematic view of a surgical instrument according to one embodiment of the present invention in a rotated position;
FIG. 3 is a schematic view of a surgical instrument according to one embodiment of the present invention in a bending station;
FIG. 4 is a schematic view of the mating structure between a drive screw and a drive rod assembly in a surgical instrument according to one embodiment of the present invention;
FIG. 5 is a schematic view of the cooperation between a bend drive gear assembly and a drive screw in a surgical instrument according to one embodiment of the present invention;
FIG. 6 is a schematic view of the sliding teeth of a surgical instrument according to one embodiment of the present invention;
FIG. 7 is a schematic view of the mating structure between the sliding teeth and the rotating head of the structure shown in FIG. 2;
FIG. 8 is a schematic view of the mating structure between the sliding teeth of the structure of FIG. 2 and the operating handle housing;
FIG. 9 is a schematic partial structural view of a closure drive assembly of a surgical instrument provided in accordance with one embodiment of the present invention;
FIG. 10 is a schematic view of a closure drive assembly of a surgical instrument according to one embodiment of the present invention;
FIG. 11 is a schematic view of a closure drive assembly of a surgical instrument according to one embodiment of the present invention;
FIG. 12 is a schematic view of a closure lockout assembly of a surgical instrument provided in accordance with one embodiment of the present invention;
FIG. 13 is a schematic view of a handle portion of a surgical instrument according to another embodiment of the present invention;
FIG. 14 is a schematic view of an exploded view of a handle portion of a surgical instrument according to another embodiment of the present invention;
FIG. 15 is a schematic view of the engagement between the sliding teeth and the rotary head of the structure of FIG. 14;
FIG. 16 is a schematic view of a sliding tooth of a surgical instrument according to another embodiment of the present invention;
FIG. 17 is a schematic view of a sliding tooth and closure lock assembly of a surgical instrument according to another embodiment of the present invention;
FIG. 18 is a schematic view of a surgical instrument according to another embodiment of the present invention shown closed while in a rotated position;
FIG. 19 is a schematic view of a surgical instrument according to another embodiment of the present invention shown closed in a bending station;
FIG. 20 is a schematic view of a surgical instrument according to one embodiment of the present invention in a rotated position with a flexible retaining member engaged with a handle portion;
FIG. 21 is a schematic view of a surgical instrument spring holder according to one embodiment of the present invention;
FIG. 22A is a schematic view of a surgical instrument spring holder according to one embodiment of the present invention;
FIG. 22B is a schematic view of a surgical instrument spring holder according to one embodiment of the present invention;
FIG. 22C is a schematic view of a surgical instrument spring holder according to one embodiment of the present invention;
fig. 23 is a schematic structural view of an elastic holder for surgical instruments according to another embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In various embodiments of the present invention, "distal" refers to the end of the surgical instrument that is distal to the user when operated, and "proximal" refers to the end of the surgical instrument that is proximal to the user when operated.
Embodiments of the present invention provide a surgical instrument, and in particular, as shown in fig. 1, a surgical instrument 50 according to an embodiment of the present invention includes an end effector 10, an elongated body 20, and a handle portion 30, wherein a proximal end 201 of the elongated body 20 is coupled to the handle portion 30 and a distal end 202 of the elongated body 20 is coupled to the end effector 10. The end effector 10 includes an anvil assembly 110 and a cartridge assembly 120, the anvil assembly 110 being pivotally mounted to the cartridge assembly 120; the handle portion 30 includes a handle housing 301, a handle 302, a closure trigger 303, and a firing trigger 304, wherein the closure trigger 303 is adapted to drive the anvil assembly 110 relative to the cartridge assembly 120 via a closure drive assembly to effect closure and opening of the end effector 10 (described in detail below); the firing trigger 304 is adapted to fire staples disposed within the staple cartridge assembly 120 after the end effector 10 is closed to effect stapling of tissue. The surgical instrument according to any of the embodiments of the present invention has both bending and rotating functions, i.e., it is capable of performing a rotational and/or bending operation on the end effector 10 according to the actual surgical tissue site during use, thereby better positioning the end effector 10 to clamp tissue for cutting and stapling, or for performing a corresponding surgical operation. The manner in which the bending and/or rotating operation of the surgical instrument according to embodiments of the present invention is achieved will be described in detail below with reference to the accompanying drawings.
It should be noted that the surgical instrument according to any of the embodiments of the present invention is not limited to the linear cutting stapler described in the specification, i.e., the end effector 10 of the surgical instrument according to any of the embodiments of the present invention is not limited to the structure of the linear cutting stapler described above, for example, the structure of the anvil assembly 110 and the cartridge assembly 120, and the end effector 10 of the surgical instrument according to any of the embodiments of the present invention may be an instrument for performing other surgical operations, for example, the end effector 10 may be a clamp, a scissors, a jaw of a high frequency electric knife, or the like.
Rotary transmission assembly
As shown in fig. 1, the surgical instrument 50 according to the above-described embodiment of the present invention includes a rotation transmission assembly, specifically, a rotation sleeve 310 disposed at a distal end of a handle housing 301, the distal end of which is fixedly connected circumferentially to a proximal end of the elongate body housing 200 of the elongate body 20. When the rotating sleeve 310 is rotated, the elongate body housing 200 and the end effector 10 coupled to the distal end of the elongate body housing 200 are rotated to perform the rotating function of the surgical instrument 50 described in this embodiment. Preferably, the rotating sleeve 310 is rigidly connected to the elongate body housing 200, e.g., the fixed connection of the rotating sleeve 310 to the elongate body housing 200 may be by any means that may achieve a rigid connection, e.g., by snap-fit.
Bending transmission assembly
Referring to fig. 1-4, the surgical instrument 50 according to any of the embodiments of the present invention further includes a rotator head 350 disposed on the handle housing 301 and a crimping drive assembly operably coupled to the rotator head 350 and adapted to perform a crimping operation on the end effector 10. Specifically, the bend transmission assembly includes a bend drive gear assembly 360, a drive screw 320 coupled to the bend drive gear assembly 360, and a drive rod assembly 330 disposed within the elongate body housing 200 and coupled to the drive screw 320 and the end effector 10, respectively. By rotating the rotator head 350, the bend drive gear assembly 360 and thus the end effector 10 is moved.
Specifically, as an embodiment of the bending transmission assembly of the surgical instrument 50 according to any embodiment of the present invention, as shown in fig. 4, two threaded portions with opposite rotation directions are provided on the drive screw 320, for example, a first threaded portion 3201 and a second threaded portion 3202 are provided on the drive screw 320, and the threads on the first threaded portion 3201 and the second threaded portion 3202 are opposite rotation directions. The driving rod assembly 330 includes a first driving rod 331a and a second driving rod 331b, wherein the first driving rod 331a is connected to the first threaded portion 3201 through the first pin 332a, and the second driving rod 331b is connected to the second threaded portion 3202 through the second pin 332b, or vice versa. In operation, by rotating the drive screw 320, the first and second drive rods 331a, 331b are moved in opposite directions, thereby turning the end effector 10 disposed at the distal end thereof.
Preferably, in the above embodiment, the bend drive gear assembly 360 is driven by means of a planetary gear set. For example, as shown in fig. 5, the bend drive gear assembly 360 includes a sun gear 361, a plurality of planet gears 362, a ring gear 363, and a planet carrier 364. Preferably, in the present embodiment, the number of the planetary gears 362 is 3, and the ring gear 363 is fixedly installed in the rotary head 350, i.e., the ring gear 363 is axially fixed with the rotary head 350 and is rotatable with the rotation of the rotary head 350. Further, sun gear 361 is rigidly connected to the proximal end of drive screw 320 and planet carrier 364 is fixedly mounted within handle housing 301. By rotating the gear ring 363, the sun gear 361 is driven to rotate, and since the proximal ends of the sun gear 361 and the drive screw 320 are rigidly connected, the drive screw 320 also rotates along with the rotation of the sun gear 361, so that the first drive rod 331a and the second drive rod 331b move in opposite directions, and the end effector 10 is turned.
It should be noted that the manner in which the surgical instrument 50 of the present invention achieves the bending of the end effector 10 is not limited to that disclosed in the above-described embodiments. Another way of achieving bending of the end effector 10 is disclosed in chinese patent application publication No. CN105433989a, entitled "bending device for surgical instruments and surgical instruments", incorporated herein by reference.
In order to achieve the switching between the rotating operation and the bending operation of the surgical instrument according to any one of the embodiments of the present invention and to secure the stability of the operation of the surgical instrument when the rotating operation or the bending operation is performed, the proximal end of the rotating sleeve 310 is provided with a plurality of teeth 311, as shown in fig. 2, on the basis of the above-described embodiment, the rotating head 350 is reciprocally movable along the length direction of the elongated body 20, and, correspondingly, on the inner wall of the distal end of the rotating head 350, a plurality of teeth 351 (see fig. 7) which are engaged with the teeth 311 of the proximal end of the rotating sleeve 310 are provided. As shown in FIG. 2, when the rotator head 350 is in its distal position, the teeth 351 at the distal end of the rotator head 350 engage the teeth 311 at the proximal end of the rotator sleeve 310, thereby causing the rotator sleeve 310 to rotate and thereby rotate the end effector 10 when the rotator head 350 is rotated, and the distal position at which the rotator head 350 is in is also referred to as a rotation position. As shown in fig. 3, when the rotator head 350 is in its proximal position, the teeth 351 at the distal end of the rotator head 350 are disengaged from the teeth 311 at the proximal end of the rotator sleeve 310, and since the ring gear 363 of the bend drive gear assembly 360 is fixedly mounted within the rotator head 350, when the rotator head 350 is moved proximally, the ring gear 363 is also moved proximally to engage the plurality of planet gears 362 of the bend drive gear assembly 360, and when the rotator head 350 is rotated, the ring gear 363 of the bend drive gear assembly 360 is also rotated to effect bending of the end effector 10, at which point the proximal position of the rotator head 350 is also referred to as a bend station.
Based on the above description, when the rotary head 350 reciprocates along the length direction of the elongated body 20, since the rotating operation or the bending operation of the end effector 10 can be driven only when the rotary head 350 is located at the rotating station or the bending station, the rotary head 350 can perform only the rotating operation or the bending operation of the end effector 10. However, in actual operation, for example, when the rotary head 350 is placed at a rotation station for a rotation operation, the rotary head 350 is erroneously operated along the length direction of the elongated body 20 so that the rotation operation of the end effector 10 cannot be continued.
In order to ensure operational stability, in accordance with the above-described embodiment of the present invention, as shown in fig. 7, the surgical instrument 50 further includes a resilient holding assembly, specifically including a resilient holding member 510 and at least one engagement portion provided on the handle housing 301. The engagement portion optionally cooperates with a resilient retainer 510, the resilient retainer 510 being disposed between the rotator head 350 and the handle housing 301. Specifically, as shown in fig. 21, the elastic holding member 510 has a substantially annular structure having an opening, and includes an inner surface 5101 and an outer surface 5102, and a fitting portion is provided on the inner surface 5101. Preferably, the elastic holding assembly includes two engagement portions, as shown in fig. 20, an engagement portion 3012 and an engagement portion 3013 are provided at the distal end of the handle housing 301, adapted to mate with mating portions of the elastic holding member 510. Preferably, the positions of the engaging portions 3012 and 3013 correspond to the rotation station and the turning station of the rotary head 350, respectively, i.e., the position of the engaging portion 3012 corresponds to the rotation station of the rotary head 350, and the position of the engaging portion 3013 corresponds to the turning station of the rotary head 350. The engagement portions 3012 and 3013 are adapted to cooperate with the elastic holders 510. Further, an annular groove 353 capable of accommodating the elastic holder 510 is provided inside the rotary head 350, as shown in fig. 13, the width of the annular groove 353 along the length direction of the elongated body 20 is equal to or slightly larger than the width of the elastic holder 510 to adapt to the elastic deformation of the elastic holder 510, and due to the axial limitation of the annular groove 353 to the elastic holder 510, the elastic holder 510 can reciprocate along the length direction of the elongated body 20 along with the rotary head 350, and due to the action of the engaging portion 3012 and the engaging portion 3013, the elastic holder 510 can be held in the engaging portion 3012 or the engaging portion 3013, and thus the rotary head 350 can be held in the rotation station or the bending station.
In any of the embodiments of the present invention, the engaging portion of the elastic holder 510 is provided on the inner surface 5101 of the elastic holder 510, for example, the engaging portion is a protrusion 5103 provided on the inner surface 5101 of the elastic holder, as shown in fig. 21, the protrusion 5103 extends inward from the inner surface 5101, preferably, a plurality of discontinuous protrusions 5103 are provided on the inner surface 5101 of the elastic holder 510, preferably, two protrusions 5103 are provided on the inner surface 5101 of the elastic holder 510, preferably, the protrusions 5103 are provided at the end portions of the inner surface of the elastic holder 510, that is, at the opening of the elastic holder 510, as shown in fig. 21, and correspondingly, the engaging portion 3012 and the engaging portion 3013 provided at the distal end of the handle housing 301 are grooves, preferably annular grooves, which engage with the protrusions 5103.
As an alternative embodiment, as shown in fig. 23, in the above embodiment, the engaging portion provided on the inner surface 5101 of the elastic holder 510 is a catch groove 5104, preferably, a plurality of discontinuous catch grooves 5104 are provided on the inner surface 5101 of the elastic holder 510, preferably, two catch grooves 5104 are provided on the inner surface 5101 of the elastic holder 510, preferably, the catch grooves 5104 are provided at the end portions of the inner surface of the elastic holder 510, that is, at the opening of the elastic holder 510, respectively, and the engaging portion 3012 and the engaging portion 3013 provided at the distal end of the handle housing 301 are protrusions engaged with the catch grooves 5104, respectively.
In any of the embodiments of the present invention, both the inner surface 5101 and the outer surface 5102 of the elastic holder 510 are arc-shaped curved surfaces and at least one of the curvature and the curvature axis of the inner surface 5101 and the outer surface 5102 of the elastic holder 510 is different. For example, the inner surface 5101 of the elastic holder is curved with a constant curvature so as to be adapted to cooperate with the handle housing 301. The outer surface 5102 of the elastic holder 510 is a curved surface having a constant curvature. Preferably, the curvature axis of the outer surface 5102 is not coaxial with the curvature axis of the inner surface 5101, i.e., the outer surface 5102 is different from the center of the circular arc curved surface of the inner surface 5101, as shown in fig. 22A and 22B, the curvature axis O' of the outer surface 5102 is not coincident with the curvature axis O of the circular arc curved surface of the inner surface 5101. Preferably, the curvature of the outer surface 5102 is different from the curvature of the inner surface 5101, as shown in fig. 22A.
As an alternative embodiment, the outer surface 5102 is a curved arc surface with a change in curvature, for example, the outer surface 5102 is an elliptical surface, as shown in fig. 22C.
Preferably, the elastic retainer 510 is of a symmetrical structure, and the axes of curvature of the inner surface 5101 and the outer surface 5102 of the elastic retainer are located on the symmetry plane of the elastic retainer 510.
In operation, when the rotary head 350 is positioned at the rotation station, the elastic holder 510 is engaged with the engagement portion 3012, and at this time, the rotary head 350 completes the rotation operation of the end effector 10, and the rotary head 350 can be stably rotated at the rotation station due to the engagement of the elastic holder 510 with the engagement portion 3012.
Correspondingly, when the rotary head 350 is located at the bending station, the elastic retaining member 510 is engaged with the engagement portion 3013, and at this time, the rotary head 350 completes the bending operation of the end effector 10, and the rotary head 350 can stably rotate at the bending station due to the engagement of the elastic retaining member 510 and the engagement portion 3013.
In addition, when the rotary head 350 is moved distally or proximally along the length of the elongated body 20, the elastic retaining member 510 switches between the engagement portion 3012 and the engagement portion 3013, for example, when the rotary head 350 is in the rotation position, the elastic retaining member 510 engages with the engagement portion 3012, at which time the rotary head 350 is operated to move proximally along the length of the elongated body 20, the elastic retaining member 510 elastically deforms to disengage from the engagement portion 3012, at the end of the switching process, the elastic retaining member 510 enters into engagement with the engagement portion 3013, the elastic retaining member 510 resumes the pre-deformation state, and at the same time provides an audible cue that the rotary head 350 has been adjusted to the corresponding turn-around position by the operator. To achieve the above-described embodiments of the present invention, the surgical instrument is not capable of performing a bending operation during a rotating operation and is not capable of performing a rotating operation during a bending operation, the rotating head 35 is only capable of performing a bending operation on the end effector 10 and is not capable of performing a rotating operation when the rotating head 350 is located at its proximal end position, i.e., the bending station, because the teeth 351 at the distal end of the rotating head 350 are disengaged from the teeth 311 at the proximal end of the rotating sleeve 310. However, in practice, to prevent user mishandling, for example, when rotating head 350 is placed in a crimping station for crimping operation, mistouching either rotating sleeve 310 or elongate body 20 causes end effector 10 to rotate, in accordance with the above-described embodiments of the present invention, surgical instrument 50 further includes a locking assembly 370, as shown in fig. 2 or 3, disposed within rotating head 350, including at least one sliding tooth 371 and a stop tooth 372, with sliding tooth 371 disposed between rotating head 350 and the distal end of handle housing 301. Specifically, as shown in fig. 6, the sliding tooth 371 has a generally T-shaped structure including a wing 3711 and a mating portion 3712, and a plurality of transverse teeth 3713 are provided at the bottom of the mating portion 3712. Correspondingly, as shown in fig. 8, an elongated slot 3011 extending in the direction of the axis a is provided at the distal end of the handle housing 301, and an engaging portion 3712 adapted to receive the sliding tooth 3014 is within the elongated slot 3011 of the handle housing 301. The sliding tooth 371 is only axially movable relative to the handle housing 301 due to the elongated slot 3011, and is locked circumferentially, i.e. the sliding tooth 371 is only slidable within the elongated slot 3011 of the handle housing 301. Further, an annular groove 352 is provided inside the rotator head 350, which can accommodate the wing 3711 of the sliding tooth 371, as shown in fig. 7, for example, the axial length of the annular groove 352 is equal to or slightly greater than the axial length of the wing 3711 of the sliding tooth 371, such that the sliding tooth 371 cannot move axially relative to the rotator head 350 due to the axial limitation of the annular groove 352 to the sliding tooth 371, i.e., the sliding tooth 371 can move proximally or distally along with the rotator head 350.
The anti-rotation teeth 372 are sleeved on the proximal end of the elongate body housing 200, for example, the anti-rotation teeth 372 and the elongate body housing 200 may be connected by a keyway and a key embedded in the keyway. As shown in fig. 2, 3 and 9, the rotation stop tooth 372 is fixedly connected to the elongated body case 200, and teeth capable of being engaged with the lateral teeth 3713 of the engagement portion 3712 of the slide tooth 371 are provided on the rotation stop tooth 372. In operation, when the rotary head 350 is placed in the bending station, as shown in FIG. 3, the transverse teeth 3713 of the sliding teeth 371 engage the anti-rotation teeth 372. At this time, when the spin head 350 is rotated, since the sliding teeth 371 are circumferentially fixed in the elongated grooves 3011 of the handle housing 301, it is not possible to rotate with the rotation of the spin head 350, and the rotation stopping teeth 372 engaged therewith are not possible to rotate, thereby realizing locking of the rotation operation at the time of the bending operation.
Accordingly, when the rotator head 350 is moved distally and positioned at the rotation station, as shown in fig. 2, the sliding teeth 371 are able to move with the movement of the rotator head 350 due to the axial restriction of the annular groove 352 of the rotator head 350, i.e., the sliding teeth 371 move distally with the rotator head 350 and disengage from the anti-rotation teeth 372. At this point, the rotary head 350 will rotate the rotary sleeve 310 and the elongated body 20, and thus the end effector 10.
As an alternative, the locking assembly 370 of the surgical instrument 50 may comprise a plurality of sliding teeth 371, preferably evenly distributed along the circumference of the distal end of the handle housing 301, and correspondingly a plurality of elongated slots 3011 are provided at the distal end of the handle housing 301 adapted to receive the respective sliding teeth 371, respectively. Preferably, the number of sliding teeth 371 is two and two corresponding elongated slots 3011 are provided at the distal end of the handle housing 301.
Closure drive assembly
Referring to FIG. 10, the surgical instrument 50 of the present embodiment further includes a closure drive assembly including a closure trigger 303, a transmission assembly 380 coupled to the proximal end of the elongate body housing 200, and a linkage 305, the proximal end of the linkage 305 being pivotally coupled to the closure trigger 303 and the distal end of the linkage 305 being pivotally coupled to the transmission assembly 380. To further ensure stability of the transmission, the linkage 305 preferably includes first and second links (not shown) disposed in parallel, each pivotally connected to opposite sides of the top end of the closure trigger 303 (in the orientation shown in FIG. 10) and opposite sides of the proximal end of the transmission assembly 380.
The distal end of the transmission assembly 380 may be coupled to the proximal end of the elongate body 20 in a variety of ways. For example, preferably, as shown in FIG. 10, the transmission assembly 380 includes a connection portion 381 adapted for pivotal connection with the linkage 305, a connection plate 382 rigidly connected to a distal end of the connection portion 381, the distal end of the connection plate 382 being rigidly connected to a proximal end of the elongate body housing 200. Preferably, in order to make the transmission of the transmission assembly 380 more stable and reliable, the connection plate 382 may be provided in plurality, for example, two connection plates 382a, 383b (see fig. 9) are provided.
To facilitate the rigid connection of the distal end of the transmission assembly 380 to the proximal end of the elongate body housing 200, it is preferred that, as an alternative embodiment, a push plate assembly is further provided between the bend gear assembly 360 and the connection plate 382 as shown in fig. 11, comprising a push plate 383 and a plurality of push rods 384, the distal end of the connection plate 382 being rigidly connected to the push plate 383, a through hole 365 being provided in the bend gear assembly 360 for the push rod 384 to pass through, as shown in fig. 9 and 12, such that the push rod 384 can be connected to the elongate body housing 200 through the bend gear assembly 360, or rigidly connected to the anti-rotation teeth 372. Because the anti-rotation teeth 372 are fixedly mounted to the proximal end of the elongate body housing 200, a rigid connection of the transmission assembly 380 to the elongate body housing 200 is achieved.
In operation, the closure trigger 303 is closed and the closure trigger 303 is rotated counterclockwise about its pivot axis to thereby urge the transmission assembly 380 distally through the linkage 305 and further urge the elongate body housing 200 distally to effect closure of the end effector 10.
It should be noted that the implementation of the transmission assembly 380 includes, but is not limited to, the implementations described in the above embodiments, and that implementations commonly used in mechanical settings by those skilled in the art may also be employed. For example, the connection plate 382 of the transmission assembly 380 may also be in the form of a sleeve, or a push rod, etc.
To further enhance the safety of the surgical procedure, avoiding erroneous operation of the surgical instrument, the surgical instrument 50 according to any of the embodiments of the present invention further includes a closing lock assembly, such that the end effector 10 of the surgical instrument 50 cannot perform a bending operation and/or a rotating operation after closing. Specifically, as shown in fig. 12, a safety piece 390 is further disposed between the anti-rotation teeth 372 and the bending gear assembly 360, and preferably, the safety piece 390 is configured as an annular piece, and a proximal end side of the safety piece is fixedly connected with a distal end of the push rod 384 of the transmission assembly 380 of the closing driving assembly, so that when the closing operation is performed, the transmission assembly 380 of the closing driving assembly moves distally and pushes the safety piece 390 to move distally together, thereby pushing the anti-rotation teeth 372 to move distally. Preferably, the outside diameter of the safety disc 390 is slightly larger than the outside diameter of the anti-rotation teeth 372.
In operation, when surgical instrument 50 is in its rotated position, i.e., rotary head 350 is in its distal position, and end effector 10 is in an open position, sliding teeth 371 are disengaged from anti-rotation teeth 372, allowing rotational operation of end effector 10. After the closure trigger 303 is closed, the transmission assembly 380 of the closure transmission assembly moves distally and drives the safety blade 390 to move distally, thereby causing the anti-rotation teeth 372 to move distally together and engage the sliding teeth 371 under the urging of the safety blade 390, resulting in a non-rotational operation of the surgical instrument 50 according to any of the embodiments of the present invention when in the closed state of the end effector 10.
Further, when the surgical instrument 50 is in its bending position, i.e., the rotary head 350 is in its proximal position, and the end effector 10 is in an open state, with the sliding teeth 371 engaged with the anti-rotation teeth 372, the ring gear 363 of the bending drive gear assembly 360 engaged with the planetary gears 362, a bending operation of the end effector 10 may be performed. After the closure trigger 303 is closed, the transmission assembly 380 of the closure transmission assembly moves distally and drives the safety piece 390 to move distally, and the safety piece 390 has an outer diameter slightly larger than the outer diameter of the anti-rotation teeth 372, so that the anti-rotation teeth 372 and the sliding teeth 371 can be driven to move distally together under the pushing of the safety piece 390. Because the sliding teeth 371 are axially fixed with the rotating head 350, when the sliding teeth 371 move distally, the sliding teeth 371 can drive the rotating head 350 to move distally together, so that the gear ring 363 of the bending drive gear assembly 360 is disengaged from the planetary gears 362, and the bending operation function is disabled, and the surgical instrument 50 according to any embodiment of the present invention cannot perform the bending operation when in the closed state of the end effector 10.
As an alternative embodiment, the safety piece 390 and the anti-rotation teeth 372 are of unitary construction.
As an alternative implementation, FIG. 13 illustrates another implementation of a surgical instrument 50 as described in the above examples. As shown in fig. 13, the surgical instrument 50A includes a rotator head 450 and a rotator sleeve 410 disposed within the rotator head 450, wherein the rotator sleeve 410 is rigidly coupled to the elongate body housing 200 of the elongate body 20 and the rotator head 450 is reciprocally movable along its length with respect to the elongate body 20. For ease of installation, the head 453 of the rotator head 450 and the rotator head body may preferably be designed as separate structures. A plurality of teeth 411 are provided at the proximal end of the rotating sleeve 410 and correspondingly teeth 451 are provided on the inner wall of the rotating head 450 adapted to cooperate with the teeth 411 at the proximal end of the rotating sleeve 410. Specifically, when the rotary head 450 is in its distal position, i.e., the rotational position, the teeth 451 of the rotary head 450 engage the teeth 411 of the rotary sleeve 410, so that when the rotary head 450 is rotated, the rotary sleeve 410 rotates therewith, thereby rotating the elongate body 20 and thus the end effector 10. The surgical instrument 50A according to the present embodiment employs the same bending transmission assembly as the surgical instrument 50 according to the above-described embodiment, and thus, the implementation of the bending operation will not be described in detail. When the rotary head 450 is in its proximal position, i.e., the crimping station, the teeth 451 of the rotary head 450 are disengaged from the teeth 411 of the rotary sleeve 410, and as the ring gear of the crimping drive gear assembly (not shown) is fixedly mounted within the rotary head 450, the ring gear also moves proximally as the rotary head 450 moves proximally to engage the plurality of planetary gears of the crimping drive gear assembly, and as the rotary head 450 rotates, the ring gear of the crimping drive gear assembly rotates to effect crimping of the end effector 10. Further, with reference to fig. 13 and 14, in addition to the above-described embodiments, the surgical instrument 50A further includes a locking assembly 470, the locking assembly 470 being disposed within the rotator head 450 and including a sliding tooth 471 and a rotation-stopping tooth 472, the sliding tooth 471 being received over the elongate body housing 200 of the elongate body 20, the rotation-stopping tooth 472 being disposed at the distal end of the handle housing 401. As shown in fig. 15, the distal end of the sliding tooth 471 is provided with a flange 4711 adapted to be snapped together with the distal end of the rotator head 450, i.e. axially fixed to the rotator head 450 by means of a snap fit and rotatable circumferentially with respect to the rotator head 450. Of course, the sliding teeth 471 may be axially fixed to the rotary head 450 in other manners, such as by a sliding slot structure.
As shown in fig. 13 to 17, the sliding tooth 471 further includes an annular connecting portion 4712 extending proximally from the flange 4711, and at least one limiting groove 4713 is provided on the annular connecting portion 4712, and correspondingly, at least one elongated groove 203 is provided on the elongated body housing 200, and at least one protrusion 412 is provided inside the rotating sleeve 410, such that the protrusion 412 of the rotating sleeve 410 penetrates the limiting groove 4713 of the sliding tooth 471 and the elongated groove 203 of the elongated body housing 200, realizing a circumferential locking axial relative movement of the sliding tooth 471, the elongated body housing 200 and the rotating sleeve 410. Further, the sliding teeth 471 also include a plurality of teeth 4714 extending proximally from the annular connection 4712, adapted to mate with the anti-rotation teeth 472 disposed at the distal end of the handle housing 401.
Specifically, when the rotary head 450 is in its rotational position, the sliding teeth 471 are in a distal position with the rotary head 450, at which time the teeth 4714 proximal to the sliding teeth 471 are disengaged from the anti-rotation teeth 472, such that when the rotary head 450 is rotated, the rotary sleeve 410, the elongated body 20, and the end effector 10 are rotated together, and at which time the ring gear 463 is disengaged from the planetary gears 462, the bending function is disabled. When the rotary head 450 is moved proximally to be placed at the bending station, the sliding teeth 471 are moved proximally together by the rotary head 450, so that the teeth 4714 of the sliding teeth 471 are engaged with the rotation stopping teeth 472, thereby realizing locking of the rotation operation when the bending operation is performed, since the sliding teeth 471 are circumferentially fixed and cannot rotate together with the rotary head 450 when the rotary head 450 is rotated.
Further, the surgical instrument 50A of the present embodiment employs the same structure as the closure drive assembly of the surgical instrument 50 of the above-described embodiments to effect closure/opening of the end effector 10, and the closure lock assembly is implemented by a closure lock tooth 490 provided on the elongate body housing 200. Specifically, as shown in fig. 17, a plurality of closure locking teeth 490 are provided between the proximal end of the elongate body housing 200 and the sliding teeth 471, with the distal ends thereof being aligned with the proximal ends of the teeth 4714 of the sliding teeth 471.
In operation, when surgical instrument 50A is in its rotated position, i.e., rotary head 450 is in its distal position, and end effector 10 is in an open position, sliding teeth 471 are disengaged from anti-rotation teeth 472, allowing rotational operation of end effector 10. After closing the closure trigger 303, the closure drive assembly 380 moves distally and urges the elongate body housing 200 of the elongate body 20 distally, and the closure lockout teeth 490 provided on the elongate body housing 200 also move distally therewith to engage the lockout teeth 472, effecting a rotational operation that is not possible when the surgical instrument 50A of the present embodiment is in the closed state of the end effector 10, as shown in FIG. 18.
When surgical instrument 50A is in its bending position, i.e., rotary head 450 is in its proximal position, and end effector 10 is in an open position, sliding teeth 471 are engaged with anti-rotation teeth 472, and ring gear 463 of bend drive gear assembly 460 is engaged with planetary gears 462, a bending operation of end effector 10 may be performed. After closing the closure trigger 303, the closure drive assembly moves distally and causes the elongate body housing 200 of the elongate body 20 to move distally, and because the closure lock teeth 490 provided on the elongate body housing 200 are aligned with the teeth 4714 of the sliding teeth 471, when the closure lock teeth 490 move distally with the elongate body housing 200, the sliding teeth 471 are pushed to move distally, causing the rotating head 450 to move distally, disengaging the ring gear 463 from the planetary gears 462, and at the same time, the closure lock teeth 490 engage the anti-rotation teeth 472, as shown in FIG. 19, rendering the turning and rotating operation impossible when the surgical instrument 50A of the present embodiment is in the closed state of the end effector 10.
It should be noted that the number of teeth of the sliding teeth 471, the rotation stopping teeth 472 and the closing locking teeth 490 of the surgical instrument 50A according to the embodiment of the present invention is not limited, as long as the matching relationship described in the above embodiment is satisfied.
In the locking assembly, all parts are in transmission connection and cooperation through a mechanical structure, and the connection stability is high.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (14)
1. A surgical instrument comprising an end effector, an elongated body, and a handle portion, both ends of the elongated body being connected to the end effector and the handle portion, respectively, the handle portion comprising:
a handle housing;
a rotator head disposed at a distal end of the handle portion, reciprocally movable along a length of the elongate body; and
An elastic holding assembly including an elastic holding member provided between the rotary head and the handle housing, and at least one engagement portion provided on the handle housing; the elastic retainer is axially locked with the rotary head and can reciprocate along the length direction of the slender body so as to be selectively matched with the meshing part of the handle shell;
the elastic retainer is of an annular structure with an opening;
the inner surface and the outer surface of the elastic retainer are arc curved surfaces, and at least one of the curvatures and curvature axes of the inner surface and the outer surface are different.
2. A surgical instrument as recited in claim 1, wherein the resilient retention member is of symmetrical configuration and wherein the axes of curvature of the inner and outer surfaces of the resilient retention member are both located on a plane of symmetry of the resilient retention member.
3. A surgical instrument as claimed in claim 1, wherein the inner surface of the resilient holder is provided with at least one projection, the engagement portion of the handle housing being provided as a groove for engagement with the projection.
4. A surgical instrument according to claim 3, wherein the protrusions are provided in two and are located at the ends of the inner surface of the elastic holder, respectively.
5. A surgical instrument as claimed in claim 1, wherein the inner surface of the resilient holder is provided with at least one detent and the engagement portion of the handle housing is provided as a projection which mates with the detent.
6. A surgical instrument as recited in claim 5, wherein the detents are provided in two and are located at respective ends of the inner surface of the resilient holder.
7. The surgical instrument of any one of claims 1-6, wherein the handle portion further comprises a bend transmission assembly, the swivel head selectively cooperating with the bend transmission assembly to cause bending of the end effector.
8. A surgical instrument as recited in claim 7, wherein the handle portion further includes a rotating sleeve disposed at a distal end of the handle portion and in circumferential locking connection with the elongate body.
9. A surgical instrument as recited in claim 8, wherein teeth are provided on each of the rotating sleeve and the rotating head, the rotating head being selectively engageable with the rotating sleeve by the teeth.
10. The surgical instrument of claim 7, wherein the handle portion includes a locking assembly including at least one sliding tooth and a rotation-stopping tooth, the sliding tooth being reciprocally movable along a length of the elongate body to selectively mate with the rotation-stopping tooth; the sliding teeth are axially and fixedly arranged in the rotating head, can rotate relative to the rotating head and are locked with the handle shell in the circumferential direction; the anti-rotation teeth are fixedly mounted at the proximal end of the elongate body.
11. The surgical instrument of claim 10, wherein the handle portion comprises a closure trigger pivotally mounted on the handle housing and coupled to a closure drive assembly disposed within the handle housing by which the elongate body is driven to reciprocate to open or close the end effector, and a closure lock assembly rigidly engaged with the closure drive assembly, the closure lock assembly being distally movable under the urging of the closure drive assembly when the closure trigger is closed.
12. The surgical instrument of claim 11, wherein the closure lock assembly is configured as a safety tab disposed between the anti-rotation tooth and the bend transmission assembly, the safety tab being configured to urge the anti-rotation tooth to move distally when moved distally; or the anti-rotation teeth and the sliding teeth can be pushed to move distally when the rupture disc moves distally.
13. A surgical instrument as recited in claim 7, wherein the handle portion includes a locking assembly including a sliding tooth reciprocally movable along a length of the elongated body to selectively engage the anti-rotation tooth, the sliding tooth being fixedly circumferentially journalled at a proximal end of the elongated body and a distal end of the sliding tooth being provided with a flange for snap-fit engagement with the rotator head, the proximal end of the sliding tooth being provided with a plurality of teeth engageable with the anti-rotation tooth when the sliding tooth is moved proximally, the anti-rotation tooth being fixedly mounted within the handle portion.
14. The surgical instrument of claim 13, wherein the handle portion comprises a closure trigger pivotally mounted on the handle housing and coupled to a closure drive assembly disposed within the handle housing, the closure lock assembly being rigidly engaged with the closure drive assembly by the closure drive assembly driving the elongated body to reciprocate to open or close the end effector, the closure lock assembly being distally movable under the urging of the closure drive assembly when the closure trigger is closed, the closure lock assembly being a closure lock tooth disposed on the elongated body, the closure lock tooth being disposed proximal of the sliding tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610989901.7A CN108065978B (en) | 2016-11-10 | 2016-11-10 | Surgical operation instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989901.7A CN108065978B (en) | 2016-11-10 | 2016-11-10 | Surgical operation instrument |
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| CN108065978A CN108065978A (en) | 2018-05-25 |
| CN108065978B true CN108065978B (en) | 2024-05-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111134751A (en) * | 2018-11-02 | 2020-05-12 | 上海逸思医疗科技有限公司 | Surgical instrument with bendable actuator |
| WO2021142529A1 (en) * | 2020-01-13 | 2021-07-22 | Quanzu Yang | Handle systems and methods for endodontic tools |
| WO2022099981A1 (en) * | 2020-11-13 | 2022-05-19 | 北京术锐技术有限公司 | Connection adapter, connection assembly, and surgical robot system |
| CN112690891A (en) * | 2020-12-22 | 2021-04-23 | 博尔医疗科技常州有限公司 | Electrosurgical instrument capable of realizing left-right turning |
| CN114224414A (en) * | 2022-01-25 | 2022-03-25 | 天津瑞奇外科器械股份有限公司 | a surgical instrument |
| CN116713506B (en) * | 2023-07-17 | 2024-01-05 | 河北源米科技发展有限公司 | Cylinder barrel boring device and method |
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