CN111374727A - Control mechanism for surgical instrument and surgical instrument - Google Patents
Control mechanism for surgical instrument and surgical instrument Download PDFInfo
- Publication number
- CN111374727A CN111374727A CN201811653802.7A CN201811653802A CN111374727A CN 111374727 A CN111374727 A CN 111374727A CN 201811653802 A CN201811653802 A CN 201811653802A CN 111374727 A CN111374727 A CN 111374727A
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- control mechanism
- surgical instrument
- knob assembly
- main body
- stop pin
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- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012636 effector Substances 0.000 description 35
- 238000001514 detection method Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
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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, e.g. tourniquets
- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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
- A61B2017/07214—Stapler heads
- A61B2017/07278—Stapler heads characterised by its sled or its staple holder
Abstract
The invention discloses a control mechanism for a surgical instrument, the surgical instrument comprises a body, the control mechanism comprises a knob assembly, the knob assembly comprises a stop pin, and the stop pin comprises a protruding part; the body is equipped with accepts the chamber, and the edge of accepting the chamber is provided with first breach and second breach, and the stop pin is acceptd in accepting the intracavity, and the bulge is located first breach or second breach. The control mechanism of the present invention includes a knob assembly that can be manipulated manually by an operator to cause the knob assembly to perform different functions.
Description
Technical Field
The invention relates to a control mechanism for a surgical instrument and a surgical instrument.
Background
As is well known, the endocavity cutting stapler has been commonly used in the abdominal cavity and other intracavitary operations.
Existing endocutters generally include a handle assembly, a shaft assembly extending longitudinally from the handle assembly, and an end effector disposed at a distal end of the shaft assembly. The stapler also includes a trigger and motor assembly extending downwardly from the bottom of the operating assembly. The trigger can be manipulated to open and close the end effector. The end effector includes a cartridge seat for operably supporting a staple cartridge therein and an anvil pivotally connected to the cartridge seat, the anvil being selectively movable between an open position and a closed position. Operating the trigger advances the rack and shaft assembly to pivot the anvil and thereby close the end effector. Likewise, operating the trigger, the shaft assembly may also be retracted via the rack, causing the staple holder to pivot and open the end effector. When the trigger or the motor assembly fails, the nail abutting seat cannot pivot so as to open the end effector, and the treated tissue cannot be separated from the end effector, so that the end effector cannot be moved out of the human body cavity, and the surgical risk is increased; the staple holder cannot pivot to close the end effector, the treated tissue cannot be positioned smoothly, the operation cannot be performed smoothly, and the opened end effector cannot be removed from the human body cavity due to size limitation. Thus, it is desirable to manually manipulate the rack and, thus, the end effector to open and close.
Disclosure of Invention
It is an object of the present invention to provide a manually controllable control mechanism for a surgical instrument.
In order to achieve the purpose, the invention is realized by the following technical scheme: a control mechanism for a surgical instrument, the surgical instrument comprising a body, the control mechanism comprising a knob assembly, the knob assembly comprising a stop pin, the stop pin comprising a projection; the body is provided with an accommodating cavity, a first notch and a second notch are formed in the edge of the accommodating cavity, the stop pin is accommodated in the accommodating cavity, and the protruding portion is located in the first notch or the second notch.
Further, the knob assembly further comprises a main body part, and the stop pin is mounted on the main body part; the main body part is provided with an accommodating groove, a part of the stop pin is accommodated in the accommodating groove, and the protruding part is positioned outside the accommodating groove.
Furthermore, the knob assembly further comprises a main body part, the main body part comprises a base part and a first convex part protruding from one side surface of the base part, the first convex part is provided with an accommodating groove, a part of the stop pin is accommodated in the accommodating groove, and the first convex part is accommodated in the accommodating cavity.
Further, the knob assembly further comprises a main body part, the main body part is provided with an accommodating groove, and a part of the stop pin is accommodated in the accommodating groove; the knob assembly further comprises a third spring sleeved on the stop pin, and the third spring is contained in the containing groove.
Furthermore, the accommodating groove comprises an intermediate section, a first section and a second section, the first section and the second section are located at two ends of the intermediate section, a first stopping wall and a second stopping wall are arranged at two ends of the intermediate section, the stopping pin comprises a body part extending along the longitudinal direction and a stop block protruding transversely from the body part, one side of the stop block abuts against the first stopping wall, the other side of the stop block abuts against one end of the third spring, and the other end of the third spring abuts against the second stopping wall.
Further, the knob assembly further comprises a pivotable toothed member.
Further, the knob assembly further comprises a main body portion, the main body portion is provided with a through groove penetrating through the top surface and the bottom surface of the main body portion, the through groove comprises two opposite side walls, the knob assembly further comprises a second rod piece located in the through groove, two ends of the second rod piece are mounted on the two side walls, the toothed piece is provided with a through hole, and the second rod piece penetrates through the through hole.
Further, the toothed member includes a horizontal portion, an inclined portion extending obliquely downward from the horizontal portion, and a toothed portion extending downward from the inclined portion, and the toothed portion is provided with a through hole.
Further, the knob assembly further comprises a main body portion, the main body portion comprises a base portion, a first protruding portion protruding from one side face of the base portion, and a second protruding portion protruding from the other side face of the base portion, the first protruding portion is contained in the containing cavity, and the horizontal portion is installed on the second protruding portion.
Furthermore, the control mechanism also comprises a movable connecting piece, the connecting piece is provided with a clamping hole, and the clamping hole is a strip-shaped hole; the knob assembly further comprises a convex column, and the convex column is located in the clamping hole.
The invention also provides a surgical instrument comprising a transmission mechanism and a control mechanism, wherein the transmission mechanism comprises a rack assembly, the rack assembly comprises a rack, the control mechanism comprises a toothed member, the toothed member is controllably meshed with the rack, and the control mechanism is the control mechanism.
The invention has the beneficial effects that: the operator can control the rack to move forwards or backwards in a manual mode, and the safety and the reliability of the operation are improved.
Drawings
FIG. 1 is a schematic diagram of the stapler of the present invention;
FIG. 2 is a schematic view of a portion of the stapler of FIG. 1;
FIG. 3 is a schematic view of a portion of the stapler of FIG. 1;
FIG. 4 is a partial schematic view of the stapler of FIG. 2;
FIG. 5 is a partial schematic view of the stapler of FIG. 4;
FIG. 6 is a schematic structural view of the connector shown in FIG. 5;
FIG. 7 is a schematic structural view of the knob assembly shown in FIG. 5;
FIG. 8 is a schematic view of the knob assembly shown in FIG. 7 from another perspective;
FIG. 9 is a schematic view of the knob assembly shown in FIG. 8 from another perspective;
FIG. 10 is an exploded perspective view of the knob assembly shown in FIG. 9;
FIG. 11 is a schematic view of the toothed member of FIG. 10;
FIG. 12 is a partial schematic view of the stapler of FIG. 2.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The meaning of "a number" is at least one.
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1-2, a stapler 100 according to the present invention includes a handle assembly 10, a shaft assembly 60 extending longitudinally from the handle assembly 10, and an end effector 70 disposed at one end of the shaft assembly 60. The end effector 70 includes a cartridge seat 72 and an anvil seat 71 pivotally coupled to the cartridge seat 72, the cartridge seat 72 for operably supporting a staple cartridge (not shown) therein, the anvil seat 71 being selectively movable between an open position and a closed position. The operating assembly 10 includes a body 11 and an end effector drive mounted to the body 11. The end effector drive arrangement includes a transmission mechanism 20 and a control mechanism 30. The transmission mechanism 20 includes a rack assembly 21 and a gear assembly 24. The control mechanism 30 includes a knob assembly 50 and a link 40. The end effector drive further includes a circuit board assembly (not shown), a trigger (not shown), and a motor assembly 80, both the trigger and the motor assembly 80 being connected to the circuit board assembly via conductive traces. The circuit board assembly comprises a circuit board, a detection unit, a processor and a control circuit unit, wherein the detection unit, the processor and the control circuit unit are installed on the circuit board. The motor unit 80 includes a third gear 81 and a motor (not shown), the third gear 81 is fixed to an output shaft of the motor, and the third gear 81 is connected to the transmission mechanism 20. The trigger can be manipulated to open and close the end effector 70, the trigger includes two buttons, when an operator presses one of the buttons, the detection unit in the circuit board assembly detects an input signal released by the button and inputs the input signal to the processor, the processor analyzes the input signal and transmits the signal to the control circuit unit, the control circuit unit transmits the signal to the motor, and the motor controls the third gear 81 to rotate forward; when the operator presses another key, the detection unit in the circuit board assembly detects an input signal and inputs the input signal to the processor, the processor analyzes the input signal and transmits the signal to the control circuit unit, the control circuit unit transmits the signal to the motor, and the motor controls the third gear 81 to rotate reversely. The third gear 81 drives operation of the gear train 20, and the gear train 20 may advance or retract the shaft assembly 60, thereby causing the anvil 71 to pivot to close or open the end effector 70. The operating assembly 10 further includes a knob housing 59 that houses the knob assembly 50, the knob assembly 50 being rotatable within the knob housing 59. An end effector 70 is attached to a distal end of the shaft assembly 60. The terms "proximal", "posterior", and "distal", "anterior" are used herein with respect to a clinician manipulating the operating assembly 10 of the stapler 100. The term "proximal" refers to a portion closer to the clinician, "posterior" refers to a direction closer to the clinician, the term "distal" refers to a portion further from the clinician, and "anterior" refers to a direction further from the clinician. That is, operating assembly 10 is proximal and end effector 70 is distal, as the proximal end of a component is shown relatively close to one end of operating assembly 10 and the distal end is shown relatively close to one end of end effector 70. In this embodiment, the clockwise direction and the counterclockwise direction are based on fig. 1 and fig. 2.
Referring to fig. 3 to 4, the rack assembly 21 includes a rack 22 and a pressing ring 23 disposed at one end of the rack 22. The gear assembly 24 includes a first rod 25, a first gear 26 sleeved on the first rod 25, and a first spring 27, wherein the first spring 27 is abutted against one side of the first gear 26. The body 11 is provided with an upper supporting wall 14 and a lower supporting wall 15 which are oppositely arranged, and two ends of the first rod 25 are respectively arranged on the upper supporting wall 14 and the lower supporting wall 15. The first spring 27 abuts on one side against the lower support wall 15 and on the other side against the first gear 26, the first gear 26 being engaged with the rack 22. The shaft assembly 60 comprises a core shaft 61 and a sleeve 62 sleeved outside the core shaft 61, the sleeve 62 comprises a first end 63 connected to the press ring 23 and a second end 65 connected to the end effector 70, a groove 64 is formed in the outer wall of the first end 63 of the sleeve 62, a rib 231 is formed in the inner wall of the press ring 23, the groove 64 and the rib 231 are matched to enable the sleeve 62 and the press ring 23 to be assembled together, and the second end 65 of the sleeve 62 is movably connected to the nail abutting seat 71. The sleeve 62 is driven by the pressing ring 23 to move forward or backward, when the sleeve 62 moves forward, the second end portion 65 of the sleeve 62 drives the nail abutting seat 71 to rotate downward to achieve closing, so that the end effector 70 is in a closed state, and when the sleeve 62 moves backward, the second end portion 65 of the sleeve 62 drives the nail abutting seat 71 to rotate upward to achieve opening, so that the end effector 70 is in an open state. The body 11 is provided with a first accommodating groove 111 for accommodating the first end portion 63 of the sleeve 62, the first accommodating groove 111 includes an insertion hole 121 penetrating through the front end wall 12, the first end portion 63 of the sleeve 62 is inserted into the first accommodating groove 111 from the insertion hole 121, the press ring 23 is sleeved on the first end portion 63, and the first end portion 63 and the press ring 23 are both accommodated in the first accommodating groove 111. The operating assembly 10 further includes a second spring 120 sleeved on the first end portion 63, one end of the second spring 120 abuts against the pressing ring 23, and the other end of the second spring 120 is clamped on the front end wall 12, i.e. a portion of the second spring 120 is accommodated in the first accommodating groove 111, and the other portion of the second spring passes through the insertion hole 121 and is exposed out of the first accommodating groove 111. When the end effector 70 is opened, one end of the pressing ring 23 abuts against the second spring 120, and the other end of the pressing ring 23 abuts against the rear end wall 13 of the first housing groove 111. The firing trigger may operate the circuit board assembly to operate the motor assembly 80, and the third gear 81 in the motor assembly 80 may drive the first gear 26 to rotate in a first direction or in a second direction, wherein the first direction is opposite to the second direction. When the first gear 26 rotates around the first direction, the first gear 26 drives the rack assembly 21 to move forward; when the first gear 26 rotates in a second direction opposite to the first direction, the rack assembly 21 is moved backward by the first gear 26. When the rack assembly 21 moves forward, the rack assembly 21 drives the sleeve 62 to move forward, and the second end portion 65 of the sleeve 62 drives the nail abutting seat 71 to rotate downward to realize closing, so that the end effector 70 is in a closed state. At this time, the press ring 23 has moved forward, one end of the press ring 23 is pressed against the second spring 120 to contract, and the other end of the press ring 23 is separated from the rear end wall 13 of the first housing groove 111 by a distance, that is, a stroke by which the press ring 23 and the sleeve 62 move forward. When the rack assembly 21 moves backward, the rack assembly 21 drives the sleeve 62 to move backward, and the second end portion 65 drives the nail abutting seat 71 to rotate upward to open, so that the end effector 70 is in an open state.
As shown in fig. 5 to 12, the connecting member 40 includes a first flat plate portion 41, a second flat plate portion 43, and a third flat plate portion 45 connecting the first flat plate portion 41 and the second flat plate portion 43. The first flat plate portion 41 extends in the horizontal direction, the third flat plate portion 45 is formed by bending downward from the edge of the first flat plate portion 41, and the second flat plate portion 43 is formed by bending rightward from the side edge of the third flat plate portion 45. In this embodiment, the horizontal, up, down, right, etc. directions are based on fig. 1 and fig. 2. The first plate portion 41 is provided with a first holding hole 42, the first rod 25 is inserted into the first holding hole 42, the first plate portion 41 is located between the first gear 26 and the upper support wall 14, and the first plate portion 41 abuts against the first gear 26. The second flat plate portion 43 is provided with a second holding hole 44, and the second holding hole 44 is a strip-shaped hole. The knob assembly 50 includes a main body 51 and a toothed member 58 mounted on the main body 51, the main body 51 has a protrusion 514, and the protrusion 514 is disposed through the second retaining hole 44. The main body 51 includes a base 511, a first protrusion 512 protruding from one side surface of the base 511, and a second protrusion 513 protruding from the other side surface of the base 511, and the first protrusion 512 is provided with a second receiving groove 52. The knob assembly 50 comprises a stop pin 56, and the stop pin 56 is partially accommodated in the second accommodating groove 52; the stop pin 56 further includes a protrusion 563 extending out of the second receiving groove 52, and the protrusion 563 is provided with a first guiding slope 564. The body 11 is provided with a receiving cavity 16 corresponding to the first protrusion 512, the first notch 17 and the second notch 18 are adjacently disposed at the edge of the receiving cavity 16, the protrusion 563 is located in the first notch 17, the first notch 17 is provided with a second guiding inclined plane 171 corresponding to the first guiding inclined plane 564, and the second guiding inclined plane 171 is disposed adjacent to the second notch 18. First guide ramp 564 cooperates with second guide ramp 171 to facilitate movement of tab 563 from within first notch 17 into second notch 18. When the knob assembly 50 rotates counterclockwise, the protruding portion 563 of the stop pin 56 rotates from the first notch 17 into the second notch 18, the protruding pillar 514 of the knob assembly 50 drives the second plate portion 43 to move downward, and the second plate portion 43 drives the first plate portion 41 to move downward. In this embodiment, the counterclockwise direction is based on fig. 1 and 2. The first flat plate portion 41 presses the first gear 26 downwards to separate the first gear 26 from the rack 22, after the first gear 26 is separated from the rack 22, the pressing ring 23 moves backwards under the driving of the elastic force of the second spring 120, the sleeve 62 moves backwards under the driving of the pressing ring 23, at this time, the nail abutting seat 71 rotates upwards, the end effector 70 is in an open state, that is, the rack assembly 21 drives the sleeve 62 to move backwards, and then drives the nail abutting seat 71 to rotate upwards to open, so that the end effector 70 is opened.
Referring to fig. 10 to 12, the knob assembly 50 further includes a third spring 57 sleeved on the stop pin 56. The second receiving cavity 52 includes a middle section 523, and a first section 521 and a second section 522 located at two ends of the middle section 523, wherein the width of the middle section 523 is greater than the widths of the first section 521 and the second section 522, and a first stopping wall 524 and a second stopping wall 525 are disposed at two ends of the middle section 523. The stop pin 56 includes an elongated body 561 and a stop 562 protruding from two lateral sides of the body 561, one side of the stop 562 abuts against the first stop wall 524, the other side of the stop 562 abuts against one end of the third spring 57, and the other end of the third spring 57 abuts against the second stop wall 525. The protrusion 563 of the stop pin 56 extends from the first segment 521 of the second receiving groove 52 under the action of the third spring 57, and when the knob assembly 50 rotates in the counterclockwise direction, the third spring 57 abuts against the stop 562 so that the protrusion 563 can move from the first notch 17 into the second notch 18. The body 51 has a through groove 53 that penetrates the base 511, the first protrusion 512, and the second protrusion 513, and the through groove 53 has opposite side walls 54. The knob assembly 50 further includes a second shaft 55 mounted in the through slot 53, a toothed member 58 mounted to the second shaft 55, the toothed member 58 being rotatable about the second shaft 55 within the through slot 53. The toothed member 58 includes a horizontal portion 581, a slope portion 582 extending obliquely downward from the horizontal portion 581, and a toothed portion 583 extending downward from the slope portion 582, the toothed portion 583 is provided with a through hole 584, and the second rod member 55 is inserted into the through hole 584 and has both ends attached to the opposite side walls 54 of the through groove 53. The body 11 is provided with a through slot 19 corresponding to the rack 22, and the tooth-shaped portion 583 can pass through the through slot 19 to abut against and mesh with the rack 22. When the knob assembly 50 is rotated counterclockwise, the toothed member 58 rotates counterclockwise with the knob assembly 50. When the protrusion 563 moves from within the first notch 17 into the second notch 18, the through slot 53 is aligned with the through slot 19, and the toothed element 58 is rotatable about the second rod 55 within the through slot 53 and the through slot 19, thereby effecting engagement of the toothed element 58 with the rack 22 under control of the knob assembly 50. The toothed member 58 rotates around the second rod 55 in the through groove 53 and the through groove 19 (the rotating direction is the direction in which the horizontal portion 581 is away from the second protrusion 513), the toothed portion 583 passes through the through groove 19 to abut against and engage with the rack 22, and at this time, if the toothed member 58 continues to rotate in the above direction, the rack assembly 21 moves forward under the driving of the toothed portion 583.
When the trigger 90, the circuit board assembly 101 and the motor assembly 80 cannot effectively drive the first gear 26 to rotate so as to open the end effector 70, the operator may rotate the knob assembly 50 counterclockwise, the protruding portion 563 of the stop pin 56 rotates into the second notch 18 from the first notch 17, the protruding pillar 514 of the knob assembly 50 drives the second flat plate portion 43 to move downward, the second flat plate portion 43 drives the first flat plate portion 41 to move downward, the first flat plate portion 41 presses the first gear 26 downward, so that the first gear 26 is separated from the rack 22, after the first gear 26 is separated from the rack 22, the press ring 23 moves backward under the driving of the elastic force of the second spring 120, the sleeve 62 moves backward under the driving of the press ring 23, at this time, the nail abutting seat 71 rotates upward, and the end effector 70 is in an open state.
When the trigger 90, the circuit board assembly 101 and the motor assembly 80 cannot effectively drive the first gear 26 to rotate so as to close the end effector 70, the operator may rotate the knob assembly 50 counterclockwise, the protruding portion 563 of the stop pin 56 rotates from the first notch 17 into the second notch 18, the protruding column 514 of the knob assembly 50 drives the second flat plate portion 43 to move downward, the second flat plate portion 43 drives the first flat plate portion 41 to move downward, and the first flat plate portion 41 presses the first gear 26 downward, so that the first gear 26 is separated from the rack 22; the toothed member 58 rotates counterclockwise with the knob assembly 50, when the protrusion 563 moves from the first notch 17 to the second notch 18, the through groove 53 is aligned with the through groove 19, the toothed member 58 rotates around the second rod 55 in the through groove 53 and the through groove 19 (the rotating direction is the direction in which the horizontal portion 581 is away from the second protrusion 513), the toothed portion 583 passes through the through groove 19 to abut against and engage with the rack 22, at this time, if the toothed member 58 continues to rotate in the above direction, the rack assembly 21 moves forward under the driving of the toothed portion 583, the sleeve 62 moves forward under the driving of the pressing ring 23 of the rack assembly 21, at this time, the nail abutting seat 71 rotates downward, and the end effector 70 is in a closed state.
The invention also provides a anastomat 100 which comprises a transmission mechanism 20 and a control mechanism 30, wherein the transmission mechanism 20 comprises a rack assembly 21, the rack assembly 21 comprises a rack 22, the control mechanism 30 comprises a toothed piece 58, and the toothed piece 58 is in controlled meshing with the rack 22.
In summary, the control mechanism of the stapler 100 of the present invention includes the connecting member 40 and the knob assembly 50. When the trigger 90, the circuit board assembly 101 or the motor assembly 80 fails and the rack assembly 21 cannot move backwards, the operator can control the gear assembly 24 to disengage from the rack assembly 21 by driving the connecting member 40 to move downwards, so that the rack assembly 21 moves backwards under the driving of the elastic force of the second spring 120, and the nail abutting seat 71 can be pivoted to open the end effector 70; when the trigger 90, the circuit board assembly 101 or the motor assembly 80 fails and the rack assembly 21 cannot move forward, the operator can drive the rack assembly 21 to move forward by manually controlling the connecting member 40 and the knob assembly 50, so that the nail abutting seat 71 can pivot to close the end effector 70, and the design increases the safety and reliability of the operation.
Although the embodiment of the present invention has been shown and described, it is understood that the above embodiment is illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiment without departing from the scope of the present invention, and all such changes, modifications, substitutions and alterations are intended to be within the scope of the present invention.
Claims (11)
1. A control mechanism for a surgical instrument, the surgical instrument including a body, the control mechanism including a knob assembly, characterized in that: the knob assembly comprises a stop pin, and the stop pin comprises a convex part; the body is provided with an accommodating cavity, a first notch and a second notch are formed in the edge of the accommodating cavity, the stop pin is accommodated in the accommodating cavity, and the protruding portion is located in the first notch or the second notch.
2. The control mechanism for a surgical instrument of claim 1, wherein: the knob assembly further comprises a main body part, and the stop pin is mounted on the main body part; the main body part is provided with an accommodating groove, a part of the stop pin is accommodated in the accommodating groove, and the protruding part is positioned outside the accommodating groove.
3. The control mechanism for a surgical instrument of claim 1, wherein: the knob assembly further comprises a main body part, the main body part comprises a base part and a first convex part protruding from one side face of the base part, the first convex part is provided with an accommodating groove, one part of the stop pin is accommodated in the accommodating groove, and the first convex part is accommodated in the accommodating cavity.
4. The control mechanism for a surgical instrument of claim 1, wherein: the knob assembly further comprises a main body part, the main body part is provided with an accommodating groove, and a part of the stop pin is accommodated in the accommodating groove; the knob assembly further comprises a third spring sleeved on the stop pin, and the third spring is contained in the containing groove.
5. The control mechanism for a surgical instrument of claim 4, wherein: the accommodating groove comprises an intermediate section, a first section and a second section, wherein the first section and the second section are located at two ends of the intermediate section, a first stopping wall and a second stopping wall are arranged at two ends of the intermediate section, the stopping pin comprises a body part extending along the longitudinal direction and a stop block protruding transversely from the body part, one side of the stop block is abutted against the first stopping wall, the other side of the stop block is abutted against one end of the third spring, and the other end of the third spring is abutted against the second stopping wall.
6. The control mechanism for a surgical instrument of claim 1, wherein: the knob assembly also includes a pivotable toothed member.
7. The control mechanism for a surgical instrument of claim 6, wherein: the knob assembly further comprises a main body portion, the main body portion is provided with a through groove penetrating through the top surface and the bottom surface of the main body portion, the through groove comprises two opposite side walls, the knob assembly further comprises a second rod piece located in the through groove, the toothed piece is provided with a through hole, and the second rod piece penetrates through the through hole.
8. The control mechanism for a surgical instrument of claim 7, wherein: the toothed part comprises a horizontal part, an inclined part and a toothed part, wherein the inclined part extends downwards from the horizontal part in an inclined mode, the toothed part extends downwards from the inclined part, and the toothed part is provided with a through hole.
9. The control mechanism for a surgical instrument of claim 8, wherein: the knob assembly further comprises a main body part, the main body part comprises a base part, a first convex part protruding from one side surface of the base part and a second convex part protruding from the other side surface of the base part, the first convex part is contained in the containing cavity, and the horizontal part is installed on the second convex part.
10. The control mechanism for a surgical instrument of claim 1, wherein: the control mechanism further comprises a movable connecting piece, the connecting piece is provided with a clamping hole, and the clamping hole is a strip-shaped hole; the knob assembly further comprises a convex column, and the convex column is located in the clamping hole.
11. A surgical instrument comprising a transmission mechanism and a control mechanism, the transmission mechanism comprising a rack assembly including a rack, the control mechanism comprising a toothed member, the toothed member being controlled to engage the rack, wherein: the control mechanism is as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653802.7A CN111374727B (en) | 2018-12-29 | 2018-12-29 | Control mechanism for surgical instrument and surgical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653802.7A CN111374727B (en) | 2018-12-29 | 2018-12-29 | Control mechanism for surgical instrument and surgical instrument |
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| Publication Number | Publication Date |
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| CN111374727A true CN111374727A (en) | 2020-07-07 |
| CN111374727B CN111374727B (en) | 2023-10-24 |
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