CN220046059U - Connection structure and surgical instrument connected with same - Google Patents

Abstract

The utility model belongs to the technical field of medical appliances, and provides a connecting structure and a surgical appliance connected with the connecting structure, wherein the connecting structure is used for connecting a first component and a second component and comprises the following components: the locking part is rotatably arranged on the first component at one end, and the other end of the locking part is used for being clamped with the second component; the unlocking piece is arranged on the second component, and when the unlocking piece is acted by external force, the unlocking piece pushes the locking piece to move from the engagement position to the disengagement position; at least one resilient member for urging the locking member from the disengaged position back to the engaged position. The connecting structure is convenient to install and simple in structure.

Description

Connection structure and surgical instrument connected with same

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a connecting structure and a surgical instrument connected with the same.

Background

The surgical robot is high-end medical equipment which gradually appears and develops along with the development of minimally invasive surgery, and is mainly used for eliminating the adverse effect of large-area wounds caused by the surgery on patients by a minimally invasive means, so that the purposes of reducing pain of the patients, accelerating the postoperative recovery speed and the like are achieved, and meanwhile, the uncontrollable surgical risk caused by hand tremors and the like of doctors in the conventional surgery can be reduced.

The surgeon controls the surgical instruments on the surgical side driver on the console side, and in order to meet the use requirements of different surgical instruments in surgery, the surgical instruments and the driving mechanism are usually designed to be detachable for changing different surgical instrument requirements in surgery, and meanwhile, the surgical instruments can be independently disinfected and sterilized. The drive mechanism is typically designed to be non-sterilizable, and to ensure sterility of the surgical procedure, a sterile adapter needs to be added between the drive mechanism and the surgical instrument during surgery to isolate the non-sterilizable drive mechanism end from the sterilizable surgical instrument end during surgery. At present, the aseptic adapter adopts the buckle to be connected with the instrument driver, promotes the button when the unblock, makes buckle and fixed knot separation, but has the clearance between buckle and the lock face, easily causes the atress uneven, the lock is unstable, appear vibrating etc. have adverse effect to the stability of whole system.

Disclosure of Invention

Based on this, there is a need to provide a connecting structure and a surgical instrument connected thereto, so as to solve the problems in the prior art.

The present utility model provides a connecting structure for connecting a first member and a second member, comprising:

a locking member having one end rotatably disposed on the first member; the other end is used for clamping with the second component, the locking piece has an engagement position for being engaged with the second component and a disengagement position for being disengaged from the second component,

the unlocking piece is arranged on the second component, when the unlocking piece is acted by external force, the unlocking piece pushes the locking piece to move from the engaging position to the disengaging position,

at least one resilient member for urging the locking member from the disengaged position back to the engaged position.

Further, the connection structure further includes at least one resilient support for urging the unlocking member back into engagement with the locking member.

Further, the horizontal displacement direction of the locking piece from the engagement position to the disengagement position is the same as the horizontal component direction of the external force applied to the unlocking piece.

Further, the unlocking piece rotates after receiving external force so as to push the locking piece to generate horizontal displacement, and the horizontal displacement direction of the locking piece is the same as the horizontal component force direction of the external force received by the unlocking piece.

Further, the unlocking piece is pivotally connected with the second component through a rotating shaft, the rotating shaft is arranged above the pressing position of the unlocking piece and presses the unlocking piece, and the unlocking piece rotates around the rotating shaft to push the locking piece from the engagement position to the disengagement position.

Furthermore, the unlocking piece generates translational motion after receiving external force so as to push the locking piece to generate horizontal displacement, and the horizontal displacement direction of the locking piece is the same as the horizontal component direction of the external force received by the unlocking piece.

Further, the unlocking piece is in translational connection with the second component, and is pressed, so that the unlocking piece moves horizontally, and the locking piece is pushed to move from the engagement position to the disengagement position.

Further, a guide structure is arranged on the unlocking piece.

Further, the guiding structure is a concave part or a convex part, and the second part is provided with the convex part or the concave part matched with the guiding structure.

Further, the horizontal displacement direction of the locking member from the engaged position to the disengaged position is opposite to the horizontal component direction of the external force applied to the unlocking member.

Further, the unlocking piece rotates after receiving external force so as to push the locking piece to generate horizontal displacement, and the horizontal displacement direction of the locking piece is opposite to the horizontal component force direction of the external force received by the unlocking piece.

Further, the unlocking piece is pivotally connected with the second component through a rotating shaft, the rotating shaft is arranged between a pressing position of the unlocking piece and a position where the unlocking piece is abutted against the locking piece, the unlocking piece is pressed, and the unlocking piece pushes the locking piece to a separation position in the direction opposite to the horizontal component force received by the unlocking piece.

Further, a limiting block is arranged on the second component and used for limiting the unlocking piece to move in a direction away from the locking piece.

Further, the locking piece comprises a first locking piece and a second locking piece, one end of the first locking piece is rotatably arranged on the first component, the other end of the first locking piece is clamped on the second component, one end of the second locking piece is rotatably arranged on the second component, and the other end of the second locking piece is clamped on the second component.

Further, the unlocking piece comprises a first unlocking piece and a second unlocking piece, the first unlocking piece is arranged on the second component, when the first unlocking piece is acted by external force, the first unlocking piece pushes the first locking piece to move from the joint position to the separation position, the second unlocking piece is arranged on the second component, and when the second unlocking piece is acted by external force, the second unlocking piece pushes the second locking piece to move from the joint position to the separation position.

The utility model also provides a surgical instrument which comprises a base and a shell, wherein the shell is covered on the base, and the base is used for being connected with the connecting structure.

Further, a locking channel is arranged on the base and used for accommodating the unlocking piece of the connecting structure and limiting the movement of the unlocking piece.

Further, a concave part is arranged on the base and used for accommodating the unlocking piece of the connecting structure, and the concave part can provide a movable space for the unlocking piece.

Further, a through hole is formed in the outer shell of the surgical instrument, and the through hole is used for enabling a temporary unlocking tool to pass through and applying acting force to the unlocking piece.

The connecting structure comprises the locking piece, the unlocking piece and the elastic piece, wherein one end of the locking piece is arranged on the first component, the other end of the locking piece passes through the second component to be clamped with the clamping surface of the second component, the unlocking piece is arranged on the second component, the unlocking piece is pressed, the unlocking piece pushes the locking piece to move from the joint position to the separation position, and the elastic piece is used for driving the locking piece to reset from the separation position to the joint position.

Drawings

FIG. 1 is a top view of a surgical system provided in an embodiment of the present utility model;

FIG. 2 is a schematic view of a combination of a surgical instrument, a sterile adapter, and an instrument driver provided in an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a connection structure according to a first embodiment of the present utility model;

FIG. 4 is a front view of a connecting structure according to a first embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a connection structure A-A according to a first embodiment of the present utility model;

FIG. 6 is a top view of a connection structure according to a first embodiment of the present utility model;

fig. 7 is a schematic diagram of a connection structure according to a second embodiment of the present utility model;

fig. 8 is a front view of a connection structure according to a second embodiment of the present utility model;

FIG. 9 is a cross-sectional view of a connection structure A-A according to a second embodiment of the present utility model;

fig. 10 is a top view of a connection structure according to a second embodiment of the present utility model;

fig. 11 is a schematic diagram of a connection structure according to a third embodiment of the present utility model;

fig. 12 is a front view of a connecting structure according to a third embodiment of the present utility model;

FIG. 13 is a cross-sectional view of a connecting structure A-A according to a third embodiment of the present utility model;

fig. 14 is a side view of a connecting structure H according to a third embodiment of the present utility model;

FIG. 15 is a top view of a third embodiment of the present utility model;

FIG. 16 is a cross-sectional view of a surgical instrument provided in an embodiment of the present utility model prior to assembly with a sterile adapter;

FIG. 17 is a cross-sectional view of another embodiment of the present utility model prior to assembly of a surgical instrument with a sterile adapter;

FIG. 18 is a schematic diagram of two connection structures according to an embodiment of the present utility model;

fig. 19 is a side view of two connection structures according to an embodiment of the present utility model.

Reference numerals illustrate:

100-surgical instrument; 200-sterile adapter; 300-instrument driver;

410-a first locking member; 410 A-A first extension; 410 b-a first clamping portion;

420-a second locking member; 420 A-A second extension; 420 b-a second clamping portion;

411-a first axis of rotation; 421-second spindle;

430-a first elastic member; 440-a second elastic member;

510-a first unlocking member; 510 A-A first button; 510 b-a first push stop;

520-a second unlocking member; 520 A-A second button; 520 b-a second push stop;

530-an elastic support; 540-limit structure; 550-a guide; 560-a first pivot axis;

570-limiting blocks; 210-mating part;

101-a first locking channel; 102-a second locking channel;

103-a first recess; 104-a second recess;

105-a housing; 106-a base.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

In the following description, a detailed description will be given for the purpose of thoroughly understanding the present utility model. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are familiar to those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".

It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for illustrative purposes only and are not limiting.

An exemplary embodiment according to the present utility model will now be described in more detail with reference to fig. 1 to 19.

Referring to fig. 1, fig. 1 is a top view of a surgical system according to an embodiment of the present utility model, including a surgeon's console 10, a display system 20, a patient side portion 30, the surgeon's console 10 for use by a surgeon during surgery, the display system 20 operable to display images of a surgical site, the patient side portion 30 including an operating table and a support system on which the surgeon performs a surgical procedure on a patient, the support system having a surgical device assembly disposed on an arm thereof, and referring to fig. 2, the surgical device assembly including a surgical instrument 100 and an instrument driver 300, in order to provide a sterile field of operation when using the surgical system, a sterile adapter 200 is generally disposed between the surgical instrument 100 and the instrument driver 300. Wherein the sterile adapter 200 is connected to the instrument driver 300 and the surgical instrument 100 is connected to the sterile adapter 200. The instrument driver 300 provides driving force to the surgical instrument 100 through the sterile adapter 200, thereby causing an end effector (not shown) of the surgical instrument 100 to perform pitch, yaw, and grip actions.

The present embodiment provides a connection structure for connecting a first component, which may be a sterile adapter 200, and a second component, which may be a surgical instrument 100, or the first component may be an instrument driver 300 and the second component may be a sterile adapter 200, but it should be noted that the first component and the second component may be other combinations, not limited thereto. The embodiment of the present utility model will be described with reference to the first component being instrument driver 300 and the second component being sterile adapter 200.

The embodiment of the utility model provides a connecting structure for connecting a sterile adapter 200 and an instrument driver 300, which specifically comprises a locking piece, an unlocking piece and at least one elastic piece, wherein one end of the locking piece is rotatably arranged on the instrument driver 300, the other end of the locking piece is used for being clamped on the sterile adapter 200, the unlocking piece is arranged on the sterile adapter 200, the unlocking piece is acted by external force, the unlocking piece pushes the locking piece to move from an engaging position to a disengaging position, and the elastic piece is used for driving the locking piece to return from the disengaging position to the engaging position.

The locking member includes an extension portion rotatably disposed on the instrument driver 300 through a rotation shaft, and a clamping portion including a clamping surface, the clamping surface being a lower surface of the clamping portion. The aseptic adapter 200 is provided with a sleeve hole matched with the clamping part, and along with the downward movement of the aseptic adapter 200, the clamping part passes through the sleeve hole and is clamped on the aseptic adapter 200, and the clamping surface is attached to the matching surface of the aseptic adapter 200, so that the surface-to-surface contact clamping is realized. Further, the clamping part rebounds under the action of the elastic piece, so that the buckling action is completed.

The unlocking piece comprises a button and a pushing block part, the pushing block part is arranged below the button, and the button and the pushing block part can be of an integrated structure. The push-stop portion abuts against the engagement portion of the locking member, and when the button is pushed, the push-stop portion pushes the engagement portion of the locking member, and the locking member rotates about the rotation axis, so that the engagement portion moves from the engaged position to the disengaged position, and the sterile adapter 200 and the instrument driver 300 complete unlocking.

Specifically, the locking member includes a first locking member 410 and a second locking member 420, one end of the first locking member 410 is rotatably disposed on the first component through a first rotating shaft 411, the other end is clamped on the second component, one end of the second locking member 420 is rotatably disposed on the second component through a second rotating shaft 421, and the other end is clamped on the second component.

Correspondingly, the unlocking members include a first unlocking member 510 and a second unlocking member 520, the first unlocking member 510 is disposed on the second component, when the first unlocking member 510 is acted by an external force, the first unlocking member 510 pushes the first locking member 410 to move from the engaged position to the disengaged position, the first unlocking member 520 is disposed on the second component, and when the first unlocking member 520 is acted by an external force, the first unlocking member 520 pushes the second locking member 420 to move from the engaged position to the disengaged position.

The elastic member includes a first elastic member 430 and a second elastic member 440, and the first elastic member 430 and the second elastic member 440 are used to drive the first locking member 410 and the second locking member 420 to return.

An elastic supporting piece 530 is arranged between the first unlocking piece 510 and the second unlocking piece 520, one end of the elastic supporting piece 530 is abutted with the first unlocking piece 510, and the other end is abutted with the second unlocking piece 520. The elastic support 530 is used for driving the first unlocking member 510 and the second unlocking member 520 to reset.

Referring to fig. 3 to 6, the connection structure includes two locking members, two unlocking members, and two elastic members. The first locking member 410 includes a first extension portion 410a and a first clamping portion 410b, the first extension portion 410a is rotatably disposed on the instrument driver 300 through a first rotation shaft 411, the first clamping portion 410b includes a first clamping surface, and the first clamping surface is a lower surface of the first clamping portion 410 b. The aseptic adapter 200 is provided with a first sleeve hole 201 adapted to the first clamping portion 410b, and the first clamping portion 410b can extend through the first sleeve hole (not shown), so as to protrude out of the matching surface of the aseptic adapter 200, and the cross-sectional dimension of the first sleeve hole (not shown) is larger than that of the first clamping portion 410b, so as to reserve a movable space of the first clamping portion 410 b. When the aseptic adapter 200 is mounted, the first clamping portion 410b passes through the first sleeve hole (not shown) and the clamping surface thereof is clamped on the matching surface of the aseptic adapter 200 along with the downward movement of the aseptic adapter 200, so as to realize surface-to-surface contact clamping. Further, the first engaging portion 410b rebounds under the action of the first elastic member 430, thereby completing the engaging action. The structure of the second locking member 420 is the same as that of the first locking member 410, and will not be described again.

The first elastic member 430 and the second elastic member 440 are preferably configured as springs, and in order to enable stable installation of the first elastic member 430 and the second elastic member 440, a first fixing post protruding toward the second clamping portion 420a of the second locking member 420 is further provided on the first clamping portion 410b of the first locking member 410, a second fixing post protruding toward the first clamping portion 410b of the first locking member 410 is further provided on the second clamping portion 420a of the second locking member 420, one end of the first elastic member 430 is sleeved to the first fixing post, the other end is abutted to the instrument driver 300, one end of the second elastic member 440 is sleeved to the second fixing post, and the other end is abutted to the instrument driver 300 to form a stable support.

In some embodiments, the first unlocking member 510 includes a first button 510a and a first pushing block portion 510b, the first pushing block portion 510b is disposed below the first button 510a, the first pushing block portion 510b abuts against the first clamping portion 410b of the first locking member 410, a first pivot shaft 560 is disposed above the first button 510a, when the first button 510a is pushed, the first pushing block portion 510b rotates around the first pivot shaft 560, the first pushing block portion 510b pushes the first clamping portion 410b of the first locking member 410, the first locking member 410 rotates around the first pivot shaft 411, so that the first clamping portion generates a horizontal displacement, and a direction of the horizontal displacement is consistent with a direction of the horizontal bisecting direction of the external force applied to the first button 510a, so that the first clamping portion 410b moves from the engaged position to the disengaged position. The structure of the second unlocking member 520 is the same as that of the first unlocking member 510, and will not be described herein.

In some embodiments, referring to fig. 7-10, the first unlocking member 510 includes a first button 510a and a first push-stop portion 510b, the first push-stop portion 510b is disposed below the first button 510a, and the first push-stop portion 510b abuts against the first clamping portion 410b of the first locking member 410. The side of the first button 510a facing the second button 520a is further provided with a set of guiding parts 550, the guiding parts 550 are convex structures arranged on the first button 510a, the aseptic adapter 200 is provided with a matching part 210, the matching part 210 is provided with a cavity for accommodating the convex structures, it should be noted that the guiding parts 550 can also be cavities arranged on the first button 510a, and correspondingly, the aseptic adapter 200 is provided with convex structures matched with the cavities. In addition, a set of limiting structures 540 is disposed on a side of the first button 510a facing the second button 520a, and the limiting structures 540 are used for limiting and clamping with the matching portion 210.

When the first button 510a is pushed, the first push stopper 510b moves in parallel to the direction of the external force, and the first push stopper 510b pushes the first engaging portion 410b of the first locking member 410, so that the first locking member 410 rotates about the first rotation shaft 411, and the first engaging portion generates a horizontal displacement in a direction consistent with the direction of the horizontal bisecting force of the external force received by the first button 510a, thereby moving the first engaging portion 410b from the engaged position to the disengaged position. The structure of the second unlocking member 520 is the same as that of the first unlocking member 510, and will not be described herein.

In some embodiments, referring to fig. 11-15, the first unlocking member 510 includes a first button 510a and a first push stop 510b, the first push stop 510b is disposed below the first button 510a, the first push stop 510b abuts against the first engagement portion 410b of the first locking member 410, and the first pivot shaft 560 is disposed between the first button 510a and the first push stop 510 b. When the first button 510a is pushed, the first push stopper 510b rotates about the first pivot axis 560 in a direction away from the second button 520a, the first push stopper 510b pushes the first engaging portion 410b of the first locking member 410, and the first locking member 410 rotates about the first pivot axis 411, so that the first engaging portion 410b is horizontally displaced in a direction away from the second button 520a, that is, in a direction opposite to a horizontal direction of an external force applied to the first button 510a, thereby moving the first engaging portion 410b from the engaged position to the disengaged position.

Specifically, the first pushing and blocking portion 510b is a bent structure, and the first clamping portion 410b abuts against a vertical portion of the bent structure, that is, when the first button 510a is pushed by the blocking member, the vertical portion of the bent portion pushes the first clamping portion 410b to move in a direction away from the second button 520a, so that the first clamping portion 410b moves from the engaged position to the disengaged position.

The structure of the second unlocking member 520 is the same as that of the first unlocking member 510, and will not be described herein.

In order to stably install the first unlocking member 510 and the second unlocking member 520 on the sterile adapter, a limiting structure is provided between the first pushing block portion 510b and the second pushing block portion 520b, which may be a limiting block 570, where one end of the limiting block 570 is close to the first pushing block portion 510b, and the other end is close to the second pushing block portion 520b.

In some embodiments, referring to fig. 16, sterile adapter 200 is coupled to base 106 of surgical instrument 100, and first locking channel 103 and second locking channel 104 are provided on base 106 at positions corresponding to first button 510a and second button 520a, respectively. The first button 219 and the second button 229 are respectively received in the first locking channel 101 and the second locking channel 102. The inner contour of the first locking through 101 is matched with the outer contour of the first button 510a, and the inner contour of the second locking through 102 is matched with the outer contour of the first button 520a, so that the first button 510a and the second button 520a are limited in locking positions, and the first button 510a and the second button 520a can only be inserted into and out of the first locking channel 101 and the second locking channel 102 along the axial direction, and have no other directions of freedom.

When the connecting structure of the embodiment of the utility model is used for connecting the sterile adapter and the instrument driver, after the surgical instrument 100 is installed, the first unlocking member 510 and the second unlocking member 520 are covered in the housing 105 of the surgical instrument 100, referring to fig. 17, the first concave portion 103 and the second concave portion 104 are arranged at positions corresponding to the first unlocking member 510 and the second unlocking member 520 on the surgical instrument 100, and after the surgical instrument 100 is connected with the sterile adapter 200, the first unlocking member 510 and the second unlocking member pass through the base 106 of the surgical instrument 100 and are respectively accommodated in the first concave portion 103 and the second concave portion 104, so that when the surgical instrument 100 is connected to the sterile adapter 200, the first concave portion 103 and the second concave portion 104 can play a certain role in protecting the first unlocking member 510 and the second unlocking member 520, thereby avoiding the influence on the overall stability of the instrument due to the false touching of the two unlocking members.

The housing 105 surface of the surgical instrument 100 is provided with through holes or openings (not shown) through which a temporary unlocking tool is inserted and which apply pushing forces to the first unlocking member 510 and the second unlocking member 520. When a failure occurs, surgical instrument 100 may not be completely unlocked from sterile adapter 200, or when it is desired to unlock surgical instrument 100 and sterile adapter 200 as a whole from instrument driver 300, a temporary unlocking tool may be passed through a through hole or opening (not shown) and applied to first unlocking member 510 and second unlocking member 520 by pushing or pulling to unlock surgical instrument 100 from sterile adapter 200, or to unlock surgical instrument 100 and sterile adapter 200 as a whole from instrument driver 300.

Referring to fig. 18 and 19, when the connection structure of the embodiment of the present utility model is used for both the surgical instrument 100 and the sterile adapter 200, and for both the sterile adapter 200 and the instrument driver 300, the unlocking piece for unlocking the sterile adapter and the instrument driver abuts against both sides of the surgical instrument 100 and the sterile adapter 200, thereby restricting the unlocking of the sterile adapter 200 and the instrument driver 300, and further enhancing the stability. If it is desired to unlock sterile adapter 200 and instrument driver 300, surgical instrument 100 and sterile adapter 200 may be unlocked first.

The connecting structure of the embodiment of the utility model can realize stable and tight joint, and the unlocking mode is more convenient.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present utility model has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed.

Claims (19)

1. A connecting structure for connecting a first member and a second member, comprising:

a locking member having one end rotatably disposed on the first member; the other end is used for clamping with the second component, the locking piece has an engagement position for being engaged with the second component and a disengagement position for being disengaged from the second component,

the unlocking piece is arranged on the second component, when the unlocking piece is acted by external force, the unlocking piece pushes the locking piece to move from the engaging position to the disengaging position,

at least one resilient member for urging the locking member from the disengaged position back to the engaged position.

2. The connection according to claim 1, further comprising at least one resilient support for urging the unlocking member back into engagement with the locking member.

3. The connecting structure according to claim 1, wherein a horizontal displacement direction of the lock member from the engaged position to the disengaged position is the same as a horizontal component force direction of the external force received by the unlock member.

4. The connecting structure according to claim 3, wherein the unlocking member rotates after receiving an external force to push the locking member to generate a horizontal displacement, and the horizontal displacement direction of the locking member is the same as the horizontal component direction of the external force received by the unlocking member.

5. The connecting structure according to claim 4, wherein the unlocking member is pivotally connected to the second member via a pivot, and the pivot is disposed above a pressing position of the unlocking member, the unlocking member is pressed, and the unlocking member rotates around the pivot, thereby pushing the locking member from the engaged position to the disengaged position.

6. The connecting structure according to claim 3, wherein the unlocking member is subjected to an external force to perform a translational motion so as to push the locking member to perform a horizontal displacement, and the horizontal displacement direction of the locking member is the same as the horizontal component direction of the external force to which the unlocking member is subjected.

7. The connection according to claim 6, wherein the unlocking member is translationally coupled to the second member, and wherein pressing the unlocking member moves the unlocking member horizontally, thereby pushing the locking member from the engaged position to the disengaged position.

8. The connection structure according to claim 7, wherein the unlocking member is provided with a guide structure.

9. The connecting structure according to claim 8, wherein the guide structure is a recess or a protrusion, and the second member is provided with a protrusion or a recess that mates with the guide structure.

10. The connecting structure according to claim 1, wherein a horizontal displacement direction of the lock member from the engaged position to the disengaged position is opposite to a horizontal component force direction of the external force applied to the unlock member.

11. The connection structure according to claim 10, wherein the unlocking member rotates after receiving an external force to push the locking member to generate a horizontal displacement, and the horizontal displacement direction of the locking member is opposite to the horizontal component direction of the external force received by the unlocking member.

12. The connection structure according to claim 11, wherein the unlocking member and the second member are pivotably connected by a rotation shaft, and the rotation shaft is provided between a pressing position of the unlocking member and a position where the unlocking member abuts against the locking member, the unlocking member is pressed, and the unlocking member urges the locking member to the disengaged position in a direction opposite to a horizontal component force to which the unlocking member is subjected.

13. The connecting structure according to claim 12, wherein a stopper is provided on the second member for restricting movement of the unlocking member in a direction away from the locking member.

14. The connecting structure according to any one of claims 1 to 13, wherein the locking member includes a first locking member and a second locking member, one end of the first locking member is rotatably disposed on the first member, the other end is clamped on the second member, one end of the second locking member is rotatably disposed on the second member, and the other end is clamped on the second member.

15. The connection structure of claim 14, wherein the unlocking member comprises a first unlocking member and a second unlocking member, the first unlocking member is disposed on the second member, the first unlocking member pushes the first locking member to move from the engaged position to the disengaged position when the first unlocking member is subjected to an external force, the second unlocking member is disposed on the second member, and the second unlocking member pushes the second locking member to move from the engaged position to the disengaged position when the second unlocking member is subjected to an external force.

16. A surgical instrument comprising a base, a housing, the housing covering the base, the base being connected to the connection structure of any one of claims 1 to 15.

17. A surgical instrument as recited in claim 16, wherein the base is provided with a locking channel for receiving the unlocking member and limiting movement of the unlocking member.

18. A surgical instrument as claimed in claim 16, wherein the base is provided with a recess for receiving an unlocking member of the connecting structure, the recess being capable of providing a living space for the unlocking member.

19. A surgical instrument as recited in claim 18, wherein a through hole is provided in the housing of the surgical instrument, the through hole being for a temporary unlocking tool to pass through and apply a force to the unlocking member.