CN116942257A - Surgical instrument - Google Patents

Abstract

The invention relates to the technical field of medical instruments, and discloses a surgical instrument which comprises a fixed handle, a movable handle, a supporting piece, a first pushing piece, a binding clip, a second pushing piece, an operating piece, a scissor head and a second transmission assembly. The surgical instrument with the structure is characterized in that the first grabbing head of the original clamp head is provided with a cutting edge part, and the first grabbing head is rotatably provided with a scissor head. When the suture knot is closed and the scissor function of the surgical instrument is used, the medical staff moves the operating piece, the operating piece drives the second pushing piece to slide, the second pushing piece drives the scissor head to rotate around the rotating shaft of the scissor head through the second transmission assembly, and the scissor head is opened and closed to be matched with the cutting edge part to realize the shearing action. The surgical instrument realizes the function of normal scissors by matching the independent scissor head with the blade part, and is convenient to cut; the surgical instrument with the structure controls the grabbing head and the scissor head through the movable handle and the operating piece respectively, has high safety, and can avoid misoperation from injuring patients and operators accidentally.

Description

Surgical instrument

Technical Field

The invention relates to the technical field of medical instruments, in particular to a surgical instrument.

Background

Some surgical instruments, such as surgical graspers, are used for tissue grasping, suturing, tying, etc., often require multiple knots, cutting wires, and multiple instrument fits during wound suturing, such as needle holders, knot tying forceps, scissors, graspers, and separation forceps, etc. The scissors are also one of common surgical instruments, and each time a knot is tied by using the grasping forceps, the scissors are needed to cut a line once, and the operation is repeated, so that the operation is troublesome, the operation time is wasted, an assistant is needed to hold the scissors aside for standby, a precious operation channel is occupied, and the labor cost is high.

Disclosure of Invention

In view of the above, the invention provides a surgical instrument to solve the problems of troublesome operation, waste of operation time and high labor cost caused by single function and separate use of the existing graspers and scissors in the operation process.

The invention provides a surgical instrument, which is characterized by comprising:

a fixed handle;

the movable handle is rotationally connected with the fixed handle;

a support member having a sliding chamber with a hollow structure; one end of the supporting piece is fixed on the fixed handle;

the first pushing piece is slidably arranged in the sliding cavity, and one end of the first pushing piece is connected with the movable handle;

the other end of the first pushing piece is connected with the clamp head through a first transmission component; a first grabbing head of the clamp head is provided with a cutting edge part;

the second pushing piece is slidably arranged in the sliding cavity;

the operating piece is arranged on the fixed handle, and one side of the operating piece is connected with the first end of the second pushing piece;

a scissor head which is matched with the blade part and is rotatably arranged on the first grabbing head;

the two ends of the second transmission component are respectively connected with the scissor head and the second end of the second pushing piece;

the scissor functional state of the surgical instrument is used, the operating piece is moved to push and pull the second pushing piece back and forth, and the second pushing piece drives the scissor head to rotate relative to the knife edge through the second transmission component.

The beneficial effects are that: the surgical instrument with the structure is characterized in that the first grabbing head of the original clamp head is provided with a cutting edge part, and the first grabbing head is rotatably provided with a scissor head. In the operation process, medical staff holds the fixed handle and the movable handle, and moves the movable handle to push and pull the first pushing piece, so that the two grabbing heads of the forceps heads are driven to open or close through the first transmission assembly, and tissue grabbing and suturing and knotting actions are realized; when the suture knot is closed and the scissor function of the surgical instrument is used, the medical staff moves the operating piece, the operating piece drives the second pushing piece to slide, the second pushing piece drives the scissor head to rotate around the rotating shaft of the scissor head through the second transmission assembly, and the scissor head is opened and closed to be matched with the cutting edge part to realize the shearing action. The scissor head and the blade part are separated from the grabbing head, so that the grabbing area of the binding clip is not occupied, and the normal implementation of the grabbing function of the binding clip is ensured; the surgical instrument realizes the function of normal scissors by matching the independent scissor head with the knife edge part, and is convenient to cut; in addition, the surgical instrument with the structure controls the grabbing head and the scissor head through the movable handle and the operating piece respectively, so that the safety is high, and the misoperation can be avoided to accidentally injure patients and operators.

In an alternative embodiment, the first grabbing head is provided with a containing groove, the blade part is arranged on the side edge of the notch of the containing groove, and the scissor head is contained in the containing groove without using the scissor function state of the surgical instrument.

The beneficial effects are that: to avoid exposing the scissor head to accidental injury or misoperation; when the grabbing function of the surgical instrument is normally used, the scissor heads are hidden in the accommodating grooves, extra space is not occupied, and the scissor heads can be fully unfolded and closed, so that the normal use of the grabbing function of the surgical instrument is ensured.

In an alternative embodiment, the second transmission assembly comprises a first rotating shaft and a first connecting rod, the first rotating shaft is fixed on the scissor head, one end of the first connecting rod is rotatably arranged on the first rotating shaft, and the other end of the first connecting rod is connected with the second end of the second pushing piece.

In an alternative embodiment, the second end of the second pushing member is provided with a slot, and the other end of the first connecting rod is provided with a plug-in part, and the plug-in part is fixedly plugged in the slot.

In an alternative embodiment, the scissor head comprises a connecting part and a shearing part, the connecting part is rotatably arranged on the first grabbing head, the first grabbing head is provided with a first limiting part, the connecting part is provided with a second limiting part, the scissor head is contracted in the accommodating groove state, and the first limiting part is abutted to the second limiting part.

The beneficial effects are that: when the scissor heads are closed in place, the first limiting part is abutted against the second limiting part to limit the shearing part, so that the shearing part is prevented from extending into the clamping surface of the first grabbing head to injure personnel accidentally.

In an alternative embodiment, the operating member includes an operating handle, one side of the operating handle is rotatably disposed on the fixed handle, the other side of the operating handle is connected to the first end of the second pushing member, and when the operating handle rotates relative to the fixed handle, the operating handle drives the second pushing member to slide along the sliding cavity.

The beneficial effects are that: the second pushing piece is driven to slide by rotating the operating handle, so that the medical staff can operate by one hand

In an alternative embodiment, the operating member further comprises a connecting member, one side of the connecting member is fixedly connected to the first end of the second pushing member, and the other side of the connecting member is slidably connected to the operating handle.

In an alternative embodiment, the top of the operating handle is provided with two connectors, the operating handle is rotatably arranged on two sides of the fixed handle through the two connectors, the connecting pieces are arranged in one-to-one correspondence with the connectors, and the other sides of the connecting pieces are in sliding connection with the connectors.

The beneficial effects are that: when the operating handle is turned, the two connecting pieces stably push and pull the second pushing piece from two sides.

In an alternative embodiment, the second pushing member is of a hollow structure, the second pushing member is sleeved outside the first pushing member, a sliding hole is formed in the fixed handle, and the connecting member extends inwards into the sliding hole to be connected with the first end of the second pushing member.

In an alternative embodiment, the operating member is slidably connected to the fixed handle, and one side of the operating member is connected to the first end of the second pushing member, so that the operating member drives the second pushing member to slide along the sliding cavity when sliding relative to the fixed handle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a surgical instrument according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of a surgical instrument with a binding clip engaged with a support member and a second pusher member according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a surgical instrument head engaged with a support member and a second pusher member according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a surgical instrument with its scissor heads open in accordance with an embodiment of the invention;

FIG. 6 is a cross-sectional view of a surgical instrument in an open position;

FIG. 7 is a partial cross-sectional view of a surgical instrument according to an embodiment of the present invention;

FIG. 8 is a schematic view of a first grasping head in a surgical instrument according to an embodiment of the invention;

FIG. 9 is a schematic view of a surgical instrument with its scissor heads open;

FIG. 10 is a cross-sectional view of a stationary handle, a first pusher member, a second pusher member, and an operating member of a surgical instrument according to an embodiment of the present invention;

FIG. 11 is a partial cross-sectional view of a surgical instrument according to an embodiment of the present invention.

Reference numerals illustrate:

1. a fixed handle; 101. a slide hole; 2. a movable handle; 3. a support; 4. a first pusher; 5. a first gripper head; 501. a blade section; 502. a receiving groove; 503. a first limit part; 6. a second gripper head; 7. a first transmission assembly; 8. a second pusher; 9. an operating member; 901. an operation handle; 9011. a connector; 902. a connecting piece; 10. a scissor head; 1001. a connection part; 1002. a shearing part; 11. a first link; 1101. a plug-in part; 12. and a connecting seat.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. 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 the operation process, once a knot is tied by using the grasping forceps, the scissors are needed to cut a line, and the operation is repeated, so that the operation is troublesome, the operation time is wasted, an assistant is needed to hold the scissors aside for standby, a precious operation channel is occupied, and the labor cost is high.

The surgical grasping forceps capable of simultaneously realizing the grasping and shearing functions in the related art comprise two forceps heads, each forceps head is provided with a grasping part and a shearing part, and the grasping forceps with the structure has the advantages that the shearing part occupies half of the clamping area of the forceps heads, so that the grasping surface of the forceps heads is reduced, and the grasping is inconvenient; meanwhile, the surgical grasping forceps with the structure have the advantages that the shearing part is positioned at the rear end of the forceps head, and in the shearing process, the surgical wire is required to be pulled out of one end of the suture position to be sheared, so that the shearing is inconvenient; in some locations, it is difficult to achieve a shear function due to space and angle issues; in addition, the grabbing part and the shearing part of the grabbing clamp with the structure are distributed on the same surface of the clamp head, so that the shearing part is easy to contact human tissues when the operation is improper, and operators are injured accidentally.

An embodiment of the present invention is described below with reference to fig. 1 to 11.

According to an embodiment of the present invention, there is provided a surgical instrument, as shown in fig. 1, comprising a fixed handle 1, a movable handle 2, a support 3, a first pusher 4, a forceps head, a second pusher 8, an operating member 9, a scissor head 10 and a second transmission assembly.

Wherein the movable handle 2 is rotationally connected with the fixed handle 1; the support 3 has a sliding cavity of hollow structure; one end of the supporting piece 3 is fixed on the fixed handle 1; the first pushing piece 4 is slidably arranged in the sliding cavity, and one end of the first pushing piece 4 is connected with the movable handle 2; the other end of the first pushing piece 4 is connected with the clamp head through a first transmission component 7; a blade part 501 is arranged on the first grabbing head 5 of the clamp head; the second pushing piece 8 is slidably arranged in the sliding cavity; the operating piece 9 is arranged on the fixed handle 1, and one side of the operating piece 9 is connected with the first end of the second pushing piece 8; the scissor head 10 is engaged with the blade portion 501 and rotatably provided on the first gripper head 5; the two ends of the second transmission component are respectively connected with the scissor head 10 and the second end of the second pushing piece 8; with the scissors functional state of the surgical instrument, the operating member 9 is moved to push and pull the second pushing member 8 back and forth, and the second pushing member 8 drives the scissor head 10 to rotate relative to the blade portion 501 via the second transmission assembly.

In the surgical instrument of this structure, the blade 501 is provided on the first grasping head 5 of the original forceps head, and the scissor head 10 is rotatably provided on the first grasping head 5. In the operation process, medical staff holds the fixed handle 1 and the movable handle 2, and moves the movable handle 2 to push and pull the first pushing piece 4, so that the two grabbing heads of the forceps heads are driven to open or close through the first transmission component 7, and tissue grabbing and suturing and knotting actions are realized; when the suturing and knotting are completed and the scissors function of the surgical instrument is used, medical staff moves the operating piece 9, the operating piece 9 drives the second pushing piece 8 to slide, the second pushing piece 8 drives the scissor head 10 to rotate around the rotating shaft of the scissor head through the second transmission assembly, and the scissor head 10 opens and closes to realize shearing action in cooperation with the cutting edge 501. The scissor head 10 and the blade part 501 are separated from the grabbing head, so that the grabbing area of the grabbing head is not occupied, and the normal implementation of the grabbing function of the grabbing head is ensured; the surgical instrument realizes the function of normal scissors by matching the independent scissor head 10 with the blade part 501, and is convenient to cut; in addition, the surgical instrument with the structure controls the grabbing head and the scissor head 10 through the movable handle 2 and the operating piece 9 respectively, so that the safety is high, and the misoperation can be avoided from injuring patients and operators.

As shown in fig. 3 to 5, in one embodiment, the first gripping head 5 is provided with a accommodating groove 502, the blade part 501 is arranged at the side of the notch of the accommodating groove 502, and the scissor head 10 is accommodated in the accommodating groove in a scissor functional state without using surgical instruments, so that the scissor head 10 is prevented from being exposed to accidental injury or misoperation; when the grabbing function of the surgical instrument is normally used, the scissor heads 10 are hidden in the accommodating groove 502, extra space is not occupied, and the scissor heads can be fully unfolded and closed to ensure the normal use of the grabbing function of the surgical instrument.

As shown in fig. 3, the gripper head comprises a first gripper head 5 and a second gripper head 6. The opposite surfaces of the first gripping head 5 and the second gripping head 6 are gripping surfaces thereof, and the surface opposite to the gripping surfaces is the back surface of the gripping head.

Optionally, in one embodiment, the receiving groove 502 is provided on the back side of the first gripping head 5. Optionally, the accommodating groove 502 is disposed through the thickness of the first gripping head 5, and the through accommodating groove 502 is convenient for processing and molding.

As shown in fig. 4 and 7, the side of the scissor head 10 near the second pusher 8 is rotatably provided on the first gripper head 5 by a rotation shaft.

As shown in fig. 7, the scissor head 10 includes a connecting portion 1001 and a shearing portion 1002, the connecting portion 1001 is rotatably disposed on the first grabbing head 5, the shearing portion 1002 extends into the accommodating groove 502, the first grabbing head 5 is provided with a first limiting portion 503, the connecting portion 1001 is provided with a second limiting portion, the scissor head 10 is retracted in the accommodating groove 502, that is, the scissor head 10 is closed in place, the first limiting portion 503 abuts against the second limiting portion, so as to limit the shearing portion 1002, and the shearing portion 1002 is prevented from extending into the clamping surface of the first grabbing head 5 to injure personnel accidentally.

As shown in fig. 7 and 8, in one embodiment, the first gripping head 5 includes a fixing portion and a clamping portion disposed at a front end of the fixing portion, the fixing portion is connected with the first transmission assembly 7, the accommodating groove is disposed on the clamping portion, a protruding portion is disposed between the fixing portion and the clamping portion, and the protruding portion is connected with the clamping portions on two sides of the accommodating groove. The connecting portion 1001 and the shearing portion 1002 of the scissor head 10 are respectively arranged on two sides of the protruding portion, the protruding portion serves as a first limiting portion 503, the side wall of the connecting portion 1001 serves as a second limiting portion, the scissor head 10 is closed in place, the side wall of the connecting portion 1001 abuts against the protruding side wall, so that the scissor head 10 is limited at a designated position, and the cutting edge of the scissor head 10 is prevented from exceeding the meshing teeth of the first grabbing head 5.

As shown in fig. 3 to 7, in one embodiment, the second transmission assembly includes a first shaft (not shown) fixed to the scissor head 10 and a first link 11, one end of the first link 11 is rotatably provided on the first shaft, and the other end of the first link 11 is connected to the second end of the second pushing member 8. The operating member 9 is moved to drive the second pushing member 8 to slide towards the first link 11, the first link 11 pushes the scissor head 10 to rotate around its rotation axis so that the scissor head 10 opens to the state shown in fig. 5, and the operating member 9 drives the second pushing member 8 to move back towards the first link 11 to pull back the first link 11, so that the scissor head 10 is reset and retracted into the accommodating groove 502. The second transmission assembly is simple in structure and reliable in operation.

In other embodiments, the second transmission assembly may further include a connecting rod, two ends of the connecting rod are rotatably connected to the scissor head 10 and the second pushing member 8, and when the second pushing member 8 is pushed or pulled, the second pushing member 8 drives the connecting rod to rotate, and the connecting rod drives the scissor head 10 to rotate so as to open or close the scissor head 10.

Alternatively, in one embodiment, as shown in fig. 7, the second end of the second pushing member 8 is provided with a slot, and the other end of the first connecting rod 11 is provided with a plugging portion 1101, and the plugging portion 1101 is plugged and fixed in the slot. When the second pushing member 8 pushes and pulls the first connecting rod 11, the end, connected with the scissor head 10, of the first connecting rod 11 rotates around the first rotating shaft, and the end, connected with the second pushing member 8, of the first connecting rod 11 is elastically deformed to provide a movable allowance for the first connecting rod 11.

Alternatively, in one embodiment, the socket 1101 is welded to the second pusher 8 to stably connect the second link to the second pusher 8. The first link 11 is bent at an angle toward the inside of the scissor head 10 toward one side of the scissor head 10.

In other embodiments, the plug 1101 may also be interference fit within the slot.

As shown in fig. 4, the first transmission assembly 7 includes two hinge rods, one ends of which are hinged at the end of the first pushing member 4, and the other ends of which are respectively hinged with the inner ends of the first gripping head 5 and the second gripping head 6. The first grabbing head 5, the second grabbing head 6 and the scissor head 10 are coaxially hinged, and the first pushing piece 4 is pushed towards the first grabbing head 5 to drive the two hinging rods to open outwards, and the two hinging rods drive the first grabbing head 5 and the second grabbing head 6 to rotate around the hinging shafts and open to the state shown in fig. 6.

As shown in fig. 1, the top of the fixed handle 1 is provided with a plug connector which extends horizontally, the plug connector is of a hollow structure, and the first pushing piece 4 and the second pushing piece 8 are arranged in the plug connector in a penetrating manner.

As shown in fig. 10 to 11, the operating member 9 includes an operating handle 901, one side of the operating handle 901 is rotatably disposed on the fixed handle 1, the other side of the operating handle 901 is connected to the first end of the second pushing member 8, and when the operating handle 901 rotates relative to the fixed handle 1, the operating handle 901 drives the second pushing member 8 to slide along the sliding cavity. The second pushing piece 8 is driven to slide by rotating the operating handle 901, so that the medical staff can operate by one hand.

As shown in fig. 10 and 11, in one embodiment, the operating member 9 further includes a connecting member 902, one side of the connecting member 902 is fixedly connected to the first end of the second pushing member 8, and the other side of the connecting member 902 is slidably connected to the operating handle 901. The operating handle 901 is rotated, and the connecting piece 902 drives the second pushing piece 8 to horizontally move along the sliding edge of the operating handle 901.

Optionally, in one embodiment, two connectors 9011 are provided at the top of the operating handle 901, the operating handle 901 is rotatably provided at two sides of the fixed handle 1 through the two connectors 9011, the connecting pieces 902 are arranged in one-to-one correspondence with the connectors 9011, and the other sides of the connecting pieces 902 are slidably connected with the connectors 9011. When the operating handle 901 is turned, the two link members 902 stably push and pull the second pushing member 8 from both sides.

Specifically, in this embodiment, the upper end of the operating handle 901 has a U-shaped structure, two ends of the U-shaped structure serve as two connectors 9011, and a bar-shaped hole extending along the length direction of the connectors 9011 is provided on the connectors 9011; the connecting piece 902 is in a pin shaft shape, one end of the connecting piece 902 is inserted and fixed on the second pushing piece 8, and the other end of the connecting piece 902 is slidably penetrated in the strip-shaped hole. The top of the connector 9011 is rotatably connected to a fixed seat at the top of the plug through a rotating shaft. The U-shaped structure is movably sleeved outside the plug connector.

Alternatively, in other embodiments, the operating member 9 is slidably connected to the fixed handle 1, one side of the operating member 9 is connected to the first end of the second pushing member 8, and the operating member 9 slides relative to the fixed handle 1 to drive the second pushing member 8 to slide along the sliding cavity. The second pushing member 8 is pushed and pulled by pushing the operating member 9 back and forth.

As shown in fig. 10 and 11, in one embodiment, the second pushing member 8 is in a hollow structure, the second pushing member 8 is sleeved outside the first pushing member 4, the fixed handle 1 is provided with a sliding hole 101, and the connecting member 902 extends into the sliding hole 101 inwards to connect the first end of the second pushing member 8.

Specifically, in this embodiment, the first pushing member 4 is disposed close to one end of the connecting member 902 in a contracted manner to form a yielding section with a smaller cross section, and the inner end of the connecting member 902 extends inward into the inner side of the inner wall of the second pushing member 8, and the yielding section provides a yielding space for sliding of the connecting member 902.

Alternatively, in one embodiment, the first pushing member 4 is in the shape of a round rod, and the second pushing member 8 is in the shape of a hollow round rod. The middle part of the movable handle 2 is rotatably connected to the side of the fixed handle 1 facing away from the binding clip, and the operating handle 901 is arranged on the side of the fixed handle 1 facing towards the binding clip. The top of movable handle 2 is equipped with the recess, and the plug of fixed handle 1 is stretched out to the one end of first impeller 4 backward, and the one section that first impeller 4 stretched out the plug is provided with a section undergauge section, and the recess joint at movable handle 2 top is on the undergauge section.

As shown in fig. 5 and 9, the supporting member 3 is in a hollow round rod shape, one ends of the first pushing member 4 and the second pushing member 8, which face the scissor head 10, extend out of the supporting member 3, a connecting seat 12 is fixed at the end of the supporting member 3, and the first grabbing head 5, the second grabbing head 6 and the scissor head 10 are coaxially and rotatably connected to the connecting seat 12.

When the grabbing function of the surgical instrument is needed, a medical staff holds the fixed handle 1 and the movable handle 2 by one hand, the thumb is arranged on the movable handle 2, and the movable handle 2 is pressed inwards or opened outwards to push and pull the first pushing piece 4 so as to open or close the first grabbing head 5 and the second grabbing head 6; when the suturing is completed and the scissor function of the surgical instrument needs to be switched, part of fingers of a medical staff are switched to the position of the operating handle 901, the operating handle 901 is rotated back to the direction of the fixed handle 1, the operating handle 901 drives the connecting piece 902 to slide towards the scissor head 10 along the sliding hole 101, the connecting piece 902 drives the second pushing piece 8 to slide towards the scissor head 10, the second pushing piece 8 pushes the first connecting rod 11, and the first connecting rod 11 pushes the scissor head 10 so as to open the scissor head 10; the operating handle 901 is turned towards the direction of the fixed handle 1, the connecting piece 902 slides along the sliding back to the scissor head 10 so as to pull back the second pushing piece 8, the second pushing piece 8 pulls the second pull rod backwards, and the second pull rod drives the scissor head 10 to rotate and reset.

Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.

Claims (10)

1. A surgical instrument, comprising:

a fixed handle (1);

the movable handle (2) is rotationally connected with the fixed handle (1);

a support (3) having a hollow sliding chamber; one end of the supporting piece (3) is fixed on the fixed handle (1);

the first pushing piece (4) is slidably arranged in the sliding cavity, and one end of the first pushing piece (4) is connected with the movable handle (2);

the other end of the first pushing piece (4) is connected with the clamp head through a first transmission assembly (7); a first grabbing head (5) of the clamp head is provided with a cutting edge part (501);

a second pushing piece (8) is slidably arranged in the sliding cavity;

the operating piece (9) is arranged on the fixed handle (1), and one side of the operating piece (9) is connected with the first end of the second pushing piece (8);

a scissor head (10) which is matched with the blade part (501) and is rotatably arranged on the first grabbing head (5);

the two ends of the second transmission component are respectively connected with the scissor head (10) and the second end of the second pushing piece (8);

and the second pushing piece (8) drives the scissor head (10) to rotate relative to the blade part (501) through the second transmission component.

2. Surgical instrument according to claim 1, characterized in that the first gripping head (5) is provided with a receiving groove (502), the blade (501) is arranged on the side of the notch of the receiving groove (502), and the scissor head (10) is received in the receiving groove without using the scissor function state of the surgical instrument.

3. A surgical instrument according to claim 1 or 2, wherein the second transmission assembly comprises a first shaft and a first link (11), the first shaft being fixed to the scissor head (10), one end of the first link (11) being rotatably arranged on the first shaft, the other end of the first link (11) being connected to the second end of the second pusher (8).

4. A surgical instrument according to claim 3, wherein the second end of the second pushing member (8) is provided with a slot, the other end of the first link (11) is provided with a plug-in portion (1101), and the plug-in portion (1101) is plugged and fixed in the slot.

5. The surgical instrument according to claim 2, wherein the scissor head (10) comprises a connecting portion (1001) and a shearing portion (1002), the connecting portion (1001) is rotatably arranged on the first grabbing head (5), a first limiting portion (503) is arranged on the first grabbing head (5), a second limiting portion is arranged on the connecting portion (1001), the scissor head (10) is retracted in the accommodating groove (502), and the first limiting portion (503) abuts against the second limiting portion.

6. A surgical instrument according to claim 1 or 2, wherein the operating member (9) comprises an operating handle (901), one side of the operating handle (901) is rotatably arranged on the fixed handle (1), the other side of the operating handle (901) is connected with the first end of the second pushing member (8), and when the operating handle (901) rotates relative to the fixed handle (1), the operating handle (901) drives the second pushing member (8) to slide along the sliding cavity.

7. A surgical instrument according to claim 6, wherein the operating member (9) further comprises a connecting member (902), one side of the connecting member (902) being fixedly connected to the first end of the second pushing member (8), the other side of the connecting member (902) being slidably connected to the operating handle (901).

8. The surgical instrument according to claim 7, wherein two connectors (9011) are provided at the top of the operating handle (901), the operating handle (901) is rotatably provided at both sides of the fixed handle (1) through two connectors (9011), the connecting pieces (902) are provided in one-to-one correspondence with the connectors (9011), and the other side of the connecting piece (902) is slidably connected with the connectors (9011).

9. A surgical instrument according to claim 7, wherein the second pushing member (8) is of a hollow structure, the second pushing member (8) is sleeved outside the first pushing member (4), a sliding hole (101) is formed in the fixed handle (1), and the connecting member (902) extends inwards into the sliding hole (101) to connect the first end of the second pushing member (8).

10. A surgical instrument according to claim 1 or 2, wherein the operating member (9) is slidably connected to the fixed handle (1), one side of the operating member (9) being connected to the first end of the second pushing member (8), the operating member (9) sliding relative to the fixed handle (1) driving the second pushing member (8) to slide along the sliding chamber.