CN117159080A - Vascular clamp and grasping forceps thereof - Google Patents

Abstract

The embodiment of the invention relates to the field of medical instruments, in particular to a vascular clamp and a grasping forceps thereof. Embodiments of the present invention provide, in a first aspect, a vascular clip comprising: the upper clamp head, the lower clamp head, the sliding block and the shell; the upper clamp head and the lower clamp head are arranged in the shell, the upper clamp head is hinged with the lower clamp head, and the first elastic piece is fixedly connected with the upper clamp head and the lower clamp head respectively; the head end of the sliding block is arranged between the upper clamp head and the lower clamp head in a sliding way, and a second elastic piece is arranged on the sliding block; the tail end of the sliding block penetrates out of the shell. According to the vascular clamp provided by the invention, the upper clamp head and the lower clamp head can be opened and closed through the moving operation of the sliding block, namely, the vascular opening and blocking functions are realized through the axial movement of the sliding block, the opening and closing operation difficulty is reduced, and the vascular clamp is convenient for medical staff to use during operation.

Description

Vascular clamp and grasping forceps thereof

Technical Field

The embodiment of the invention relates to the field of medical instruments, in particular to a vascular clamp and a grasping forceps thereof.

Background

In laparoscopic surgery, tools are required to temporarily block blood vessels, for example, in laparoscopic nephrectomy, currently used vascular blocking forceps are puppy forceps, and the corresponding graspers are puppy graspers.

The method comprises the steps of feeding the puppy forceps into the abdominal cavity through the puppy forceps, moving the puppy forceps to the side of a renal artery, applying pressure to handles of the puppy forceps, opening the puppy forceps, and then blocking blood vessels. After kidney is sutured, the puppy forceps are used again, 2 protrusions at the head end of the puppy forceps are aligned with the concave parts at the tail parts of the puppy forceps, pressure is applied to the handles of the puppy forceps, the head of the puppy forceps is opened, the puppy forceps are removed, the handles are loosened, and the puppy forceps are taken out of the abdominal cavity by the puppy forceps.

In the process, the protrusion of the head end of the grasping forceps and the concave tail part of the ribavirin are very difficult to align because of being observed only through a laparoscope 2D picture, so that the operation difficulty is high, the kidney heat ischemia time is increased, the ribavirin is easy to fall off in the process of moving out of the abdominal cavity, the operation time is prolonged, in addition, the forceps taking time is increased due to the fact that arterial pulsation, surrounding tissue obstruction, troca angle inappropriateness and the like, the kidney heat ischemia time is prolonged, and adverse effects are generated on the recovery of the kidney function of a patient after operation.

Disclosure of Invention

Embodiments of the present invention provide, in a first aspect, a vascular clip comprising: the upper clamp head, the lower clamp head, the sliding block and the shell;

the upper clamp head and the lower clamp head are arranged in the shell, the upper clamp head is hinged with the lower clamp head, the first elastic piece is fixedly connected with the upper clamp head and the lower clamp head respectively, and the first elastic piece enables the upper clamp head and the lower clamp head to be clamped under the state of no external force;

the head end of the sliding block is arranged between the upper clamp head and the lower clamp head in a sliding manner, when the sliding block moves towards the proximal end, the head end of the sliding block enables the upper clamp head and the lower clamp head to open, a second elastic piece is arranged on the sliding block, and the second elastic piece is used for providing thrust towards the distal end for the sliding block;

the tail end of the sliding block penetrates out of the shell, and the tail end of the sliding block is used for being connected with external equipment.

In one possible scheme, the upper clamp head is hinged with the lower clamp head through a rotating shaft, and two ends of the rotating shaft, which extend out of the upper clamp head and the lower clamp head, are respectively fixed on the inner side wall of the shell.

In a possible scheme, the head end of the sliding block is a quadrangular frustum of a prism, and a slide way matched with the quadrangular frustum of a prism is arranged between the upper clamp head and the lower clamp head, so that the sliding of the sliding block is more stable and smooth.

In one possible solution, the tail of the slider is in the shape of a rounded ellipsoid, so as to connect with external graspers and avoid injuring surrounding tissues by mistake.

In one possible solution, the housing is cylindrical, the head end of the housing being larger than the tail end, so that the tail end of the housing forms a truncated cone, the housing being open for the upper and lower jaws to open for access to an external grasper.

According to the vascular clamp provided by the invention, the upper clamp head and the lower clamp head can be opened and closed through the moving operation of the sliding block, namely, the vascular opening and blocking functions are realized through the axial movement of the sliding block, the opening and closing operation difficulty is reduced, and the vascular clamp is convenient for medical staff to use during operation.

The embodiment of the invention provides a vascular clamp grasping forceps in a second aspect, which is at least applicable to vascular clamps in the possible schemes, and comprises a sleeve main body, a fixed handle, an upper grasping forceps, a lower grasping forceps, a grasping and releasing linkage mechanism, a first handle, a pull rod, a push-pull linkage mechanism and a second handle;

the upper grabbing clamp, the lower grabbing clamp and the pull rod are all positioned in the sleeve main body;

the first handle is respectively connected with the upper grabbing clamp and the lower grabbing clamp through the grabbing and placing linkage mechanism and used for controlling the grabbing and placing actions of the upper grabbing clamp and the lower grabbing clamp;

the second handle is connected with the pull rod through a push-pull linkage mechanism and is used for controlling the axial movement of the pull rod, and a connecting mechanism used for being connected with an external tool is arranged at the far end of the pull rod.

In one possible solution, the pick-and-place linkage mechanism includes: the device comprises two pulleys, ropes, a first movable shaft, a first connecting rod, a first handle movable shaft and a first fixed shaft;

the upper grabbing clamp and the lower grabbing clamp are elastic material pieces, so that the upper grabbing clamp and the lower grabbing clamp are close under the condition of no external force, and the distal ends of the upper grabbing clamp and the lower grabbing clamp are fixedly arranged in the sleeve main body;

the first handle is hinged with the fixed handle through the first fixed shaft, the tail end of the first connecting rod is hinged with the first handle through the first handle movable shaft, and the first movable shaft is arranged at the head end of the first connecting rod and is positioned in the first chute;

the two pulleys are fixedly arranged on the inner wall of the sleeve body, the rope is simultaneously arranged on the two pulleys and the first movable shaft in a penetrating manner, and two ends of the rope are fixedly connected with the tail end of the upper grabbing clamp and the tail end of the lower grabbing clamp respectively;

the grabbing and releasing linkage mechanism is used for driving the tail end of the upper grabbing clamp and the tail end of the lower grabbing clamp to be far away from each other when the first handle rotates anticlockwise relative to the fixed handle, so that the control of the first handle on the upper grabbing clamp and the lower grabbing clamp is realized, and the external vascular clamp is connected.

In one possible solution, the push-pull linkage comprises: the second movable shaft, the second connecting rod and the second handle movable shaft are fixed on the second fixed shaft;

the second handle is hinged with the fixed handle through a second fixed shaft, the tail end of the second connecting rod is hinged with the second handle through a second handle movable shaft, the pull rod is hinged with the head end of the second connecting rod through a second movable shaft, and the second movable shaft is positioned in a second chute;

the push-pull linkage mechanism is used for driving the pull rod to move towards the tail end when the second handle rotates clockwise relative to the fixed handle, so that the control of the second handle on the pull rod is realized, and the external vascular clamp is driven to move.

In one possible arrangement, the attachment mechanism includes a pair of gripping teeth that open when the pull rod is moved toward the trailing end and close when moved toward the leading end to effect gripping of the external vascular clamp.

In one possible solution, the sleeve body is cylindrical, the inner wall of the front end of the sleeve body is provided with a boss, and the height of the boss increases gradually towards the tail end of the sleeve body so as to be connected with an external vascular clamp.

According to the vascular clamp grasping forceps, displacement control of the vascular clamp is achieved through the grasping and releasing linkage mechanism, grasping and releasing of the vascular clamp are achieved through the pushing and pulling linkage mechanism, the vascular clamp grasping forceps are simple in structure, operation difficulty of operators on the vascular clamp is reduced, and the vascular clamp grasping forceps are convenient to use during operation of medical staff.

Drawings

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

Fig. 1 is a front view showing a clamped state of a vascular clamp without a housing in the first embodiment;

fig. 2 is a front view of the released state of the vascular clamp without the housing in the first embodiment;

fig. 3 is a right side view in cross section of the clamped state of the vascular clamp without the housing in the first embodiment;

fig. 4 is a right side view in cross section of the released state of the vascular clamp without the housing in the first embodiment;

fig. 5 is a cross-sectional elevation view showing a clamped state of the vascular clamp without the housing in the first embodiment;

FIG. 6 is a cross-sectional elevation view of the released state of the vascular clamp without the housing in the first embodiment;

FIG. 7 is an elevation view showing a clamped state of a vascular clamp with a housing in accordance with the first embodiment;

fig. 8 is a right side view showing a clamped state of the vascular clamp with the housing in the first embodiment;

FIG. 9 is a schematic view showing a main structure of a vascular clamp with a housing in accordance with the first embodiment;

FIG. 10 is a schematic diagram of the main structure of a second embodiment grasper;

fig. 11 is a diagram showing the effect of the grasper and the vascular clamp in the second embodiment.

Reference numerals in the drawings:

the upper clamp head 1, the lower clamp head 2, the sliding block 3, the first elastic piece 4, the rotating shaft 5, the shell 6, the cylinder main body 8, the upper grasping forceps 9a, the lower grasping forceps 9b, two pulleys 11a, a rope 11b, a pull rod 12, a first movable shaft 13, a first sliding groove 14, a first handle movable shaft 15, a first fixed shaft 16, a first handle 17, a second movable shaft 18, a second sliding groove 19, a second handle movable shaft 20, a second handle 21, a second fixed shaft 22, a fixed handle 23, grasping teeth 24a (24 b), a first connecting rod 25 and a second connecting rod 26.

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 description of the present invention, it should be understood that the terms "center," "head," "tail," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," "outer," "axial," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; either directly, or indirectly, through intermediaries, may be in communication with each other, or may be in interaction with each other, unless explicitly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless specifically stated and limited otherwise, the term "proximal" refers to the end that is closer to the operator and "distal" refers to the end that is farther from the operator. "

The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Example 1

Fig. 1 is a front view showing a clamped state of a vascular clamp without a housing in the first embodiment; fig. 2 is a front view of the released state of the vascular clamp without the housing in the first embodiment; fig. 3 is a right side view in cross section of the clamped state of the vascular clamp without the housing in the first embodiment; fig. 4 is a right side view in cross section of the released state of the vascular clamp without the housing in the first embodiment; fig. 5 is a cross-sectional elevation view showing a clamped state of the vascular clamp without the housing in the first embodiment; FIG. 6 is a cross-sectional elevation view of the released state of the vascular clamp without the housing in the first embodiment; FIG. 7 is an elevation view showing a clamped state of a vascular clamp with a housing in accordance with the first embodiment; fig. 8 is a right side view showing a clamped state of the vascular clamp with the housing in the first embodiment; FIG. 9 is a schematic view showing a main structure of a vascular clamp with a housing in accordance with the first embodiment; as shown in fig. 1 to 9, the vascular clip of the present embodiment includes: an upper clamp head 1, a lower clamp head 2, a sliding block 3 and a shell 6. The upper binding clip 1 and the lower binding clip 2 are arranged in the shell 6, the upper binding clip 1 is hinged with the lower binding clip 2, the first elastic piece 4 is fixedly connected with the upper binding clip 1 and the lower binding clip 2 respectively, the first elastic piece 4 enables the upper binding clip 1 and the lower binding clip 2 to be clamped under the state of no external force, the head end of the sliding block 3 is arranged between the upper binding clip 1 and the lower binding clip 2 in a sliding manner, when the sliding block 3 moves towards the proximal end, the head end of the sliding block 3 enables the upper binding clip 1 and the lower binding clip 2 to open, the sliding block 3 is provided with a second elastic piece, the second elastic piece is used for providing thrust towards the distal end for the sliding block 3, the tail end of the sliding block 3 penetrates out of the shell 6, and the tail end of the sliding block 6 is used for being connected with external equipment. Optionally, the upper binding clip 1 is hinged with the lower binding clip 2 through a rotation shaft 5, and two ends of the rotation shaft 5 extending out of the upper binding clip 1 and the lower binding clip 2 are respectively fixed on the inner side wall of the shell 6. Optionally, the head end of the sliding block is a quadrangular frustum, and a slideway matched with the quadrangular frustum is arranged between the upper clamp head 1 and the lower clamp head 2. Optionally, the tail of the sliding block is a smooth ellipsoid. Optionally, the shell is cylindrical, and the head end of the shell is larger than the tail end, so that the tail end of the shell forms a round table, and the shell is opened to open the upper binding clip and the lower binding clip.

Specifically, in this embodiment, the upper binding clip and the lower binding clip have an approximately rectangular shape, and have grooves therein for accommodating the slider and the torsion spring, and are connected by the rotation shafts on both sides and the torsion spring in the middle. The middle horizontal section of the torsion spring is embedded into the tail end of the upper binding clip, the last circle on the two sides turns to the inner side along the horizontal direction after downwards, and is embedded into the middle of the lower binding clip. When no external force exists, the clamp head is naturally closed under the action of the elasticity of the torsion spring. The head end of the sliding block is a quadrangular frustum, the tail end of the sliding block is a smooth ellipsoid, the middle of the sliding block is connected by a steel wire with the diameter of 1.5mm, and the sliding block is of an integrated structure and penetrates through the two forceps heads. The structural shapes of the head end and the tail end of the slider in this embodiment are only optional, and other embodiments can be adjusted to other shapes without affecting the implementation function, for example, the head end of the slider can also be in other polygonal cones, and the tail end can be in an ellipsoid or a semi-ellipsoid. It can be understood that when external force is applied to enable the slider to move towards the tail part of the clamp head, the larger head end of the slider interacts with the gradually narrowed groove to prop up the upper clamp head and the lower clamp head, so that the vascular clamp is opened, meanwhile, the torsion spring deforms, the elasticity of the clamp head is increased, and the closed state can be restored after the external force is removed. The rotary shaft fixes the upper clamp head protuberance at the outer side and the lower clamp head protuberance at the inner side so as to ensure that the two clamp heads only rotate around the center of the rotary shaft and avoid displacement in other directions caused by stress.

The second elastic member may be sleeved on the steel wire of the slider, with one end abutting against the head end of the slider and the other end abutting against between the upper and lower clamp heads (not shown in the figure), and alternatively, the vascular clamp is welded to the housing by two rotation shafts respectively, and 2 compression springs (second elastic members) are installed between the formed 2 welding points and the head of the slider. The head end of the outer shell is cylindrical, the diameter of the tail end is slightly reduced to form a round table, the head is completely opened to accommodate the opening and closing of the clamp head, and the tail part is only provided with a round hole with the diameter of 1.8mm for the steel wire in the middle of the sliding block to freely pass through. The housing is secured to the inner vascular clamp by welding with the rotational shaft, the weld leaving sufficient width to accommodate the spring. One end of the spring is fixed on a horizontal steel wire extending from the head of the sliding block to two sides, the other end of the spring is fixed on a welding point, when external force is applied to enable the sliding block to move backwards, the spring is compressed to generate elastic force, and when the external force is removed, the elastic force of the spring can help the sliding block to reset.

Through the above-mentioned content, it is difficult to find that, the vascular clamp that this embodiment provided through the removal operation to the slider, can realize opening and closing of last binding clip and lower binding clip, through the axial displacement to the slider promptly, has realized the function to the vascular opening with block, has reduced the operation degree of difficulty of opening and closure, makes things convenient for medical staff to use during the operation.

Example two

FIG. 10 is a schematic diagram of the main structure of a second embodiment grasper; fig. 11 is a diagram showing the effect of the grasper and the vascular clamp in the second embodiment. As shown in fig. 10 to 11, the vascular clamp grasper in the second embodiment is at least applicable to the vascular clamp in the first embodiment, and includes a sleeve body 8, a fixed handle 23, an upper grasper 9a, a lower grasper 9b, a grasping and releasing linkage, a first handle 17, a pull rod 12, a push-pull linkage, and a second handle 21. Wherein, go up the nipper 9a, lower nipper 9b and pull rod 12 all are located sleeve main part 8, first handle 17 is connected with last nipper 9a and lower nipper 9b respectively through grabbing and releasing link gear for control the action of putting of grabbing and releasing of nipper 9a and lower nipper 9b, second handle 21 is connected with pull rod 12 through push-pull link gear, be used for controlling the axial displacement of pull rod 12, the distal end of pull rod 12 is equipped with the coupling mechanism that is used for being connected with external instrument. Optionally, the catch-release linkage mechanism includes: the two pulleys 11a, one rope 11b, the first movable shaft 13, the first connecting rod 25, the first handle movable shaft 15 and the first fixed shaft 16, the upper grabbing clamp 9a and the lower grabbing clamp 9b are made of elastic materials, the upper grabbing clamp 9a and the lower grabbing clamp 9b are close under the state of no external force, the distal ends of the upper grabbing clamp 9a and the lower grabbing clamp 9b are fixedly arranged in the sleeve main body 8, the first handle 17 is hinged with the fixed handle 23 through the first fixed shaft 16, the tail end of the first connecting rod 25 is hinged with the first handle 17 through the first handle movable shaft 15, the first movable shaft 13 is arranged at the head end of the first connecting rod 25 and is positioned in the first sliding groove 14, the two pulleys 11 are fixedly arranged on the inner wall of the sleeve main body 8, the rope 11 is simultaneously penetrated on the two pulleys 11 and the first movable shaft 13, two ends of the rope 11 are fixedly connected with the tail end of the upper grabbing clamp 9a and the tail end of the lower grabbing clamp 9b respectively, and the grabbing linkage mechanism is used for driving the tail end of the upper grabbing clamp 9a and the tail end of the lower grabbing clamp 9b to be far away from each other when the first handle 17 rotates anticlockwise relative to the fixed handle 23. Optionally, the push-pull linkage mechanism includes: the second movable shaft 18, the second connecting rod 26, the second fixed shaft 22 of the second handle movable shaft 20, the second handle 21 is hinged with the fixed handle 23 through the second fixed shaft 22, the tail end of the second connecting rod 26 is hinged with the second handle 21 through the second handle movable shaft 20, the pull rod 12 is hinged with the head end of the second connecting rod 26 through the second movable shaft 18, the second movable shaft 18 is located in the second sliding groove 19, and the push-pull linkage mechanism is used for driving the pull rod 12 to move towards the tail end when the second handle 21 rotates clockwise relative to the fixed handle 23. Optionally, the connection mechanism includes a pair of gripping teeth 24a (24 b) that open when the pull rod 12 is moved toward the trailing end and close when it is moved toward the leading end. In the prior art, the opening and closing of the grabbing teeth can be realized through an electromagnetic valve, namely, electromagnetic grabbing in the prior art. In addition, in an alternative scheme, the pair of gripping teeth are mutually hinged by the elastic sheets, the pair of gripping teeth are close under the state of no external force, and the gripping teeth deform and open when the pull rod moves towards the tail end of the pull rod. Optionally, the sleeve main body 8 is a cylinder, the inner wall of the front end of the sleeve main body 8 is provided with a boss, and the height of the boss increases gradually towards the tail end of the sleeve main body 8.

Specifically, the shape of the gripping sleeve is similar to that of a cylinder, the front end cylinder wall is gradually thickened, and the circular opening is reduced from large to small and is used for preventing the vascular clamp shell from entering the sleeve too deeply. And then forming a turning part for fixing the elastic steel sheet, wherein the thickness of the inner cylinder wall is 1/2 of that of the turning part. The head end of the elastic steel sheet is welded at the opening of the cylinder wall, the side surface of the elastic steel sheet is propped against the cylinder wall, and the tail end of the elastic steel sheet is connected with the pulley rope. When no external force exists, the ellipsoidal tail of the sliding block is clamped and fixed by the two elastic steel sheets, so that the grabbing of the vascular clamp by the grabbing pliers is realized. When the first handle is pulled towards the direction of the fixed handle, the first handle rotates anticlockwise around the fixed shaft of the first handle, the movable shaft of the first handle is far away from the track of the movable shaft, the first movable shaft is forced to move backwards, meanwhile, the pulley rope is pulled, the tail ends of the elastic steel sheets are deformed towards the outer side direction of the cylinder wall due to the pulling force, the distance between the tail ends of the two elastic steel sheets is increased, the sliding blocks cannot be fixed continuously, and the release of the grasping forceps to the vascular clamps is realized. When the second handle is pulled towards the direction of the fixed handle, the second handle rotates clockwise around the fixed shaft of the second handle, so that the second handle movable shaft is far away from the second movable shaft track, the second movable shaft is forced to move backwards, meanwhile, the pull rod is pulled, the grabbing teeth at the front end of the pull rod are opened, the connecting groove at the tail end of the sliding block is clamped, the sliding block is driven to move backwards, and the vascular clamp is opened. After the external force is removed, the sliding block moves forwards under the elasticity of the compression spring and the torsion spring to restore to the initial position, and the vascular clamp is closed.

In actual operation, firstly, under the condition that the two handles are not subjected to external force, the vascular clamp is moved to the position close to the blood vessel to be blocked by utilizing the grasping forceps, at the moment, the second handle is pulled, the forceps head is opened, the position of the vascular clamp is finely adjusted by the grasping forceps, the forceps head is located above and below the blood vessel, the second handle is slowly loosened, the forceps head is closed to block the blood vessel, the first handle is pulled, the vascular clamp is released, the first handle is loosened, and the grasping forceps are taken out from the laparoscopic poking hole. When blood flow needs to be restored, the grasping forceps are moved to the tail part of the vascular clamp, the first handle is pulled, the grasping forceps are moved forwards, the opening of the grasping forceps is sleeved on the shell of the vascular clamp and props against the tail part of the vascular clamp, the first handle is loosened, and the grasping of the vascular clamp is achieved through the sliding block. Pulling the second handle, opening the clamp head, removing the vascular clamp, loosening the second handle, and taking the vascular clamp and the grasping forceps out of the laparoscopic poking hole by using the grasping forceps, thereby completing the operation. In the whole operation, the vascular clamp is grabbed and released, and the opening and closing of the clamp head are realized by the back-and-forth movement of the connecting device driven by the two handles, so that the pressing type of the traditional vascular blocking clamp is changed into the push-pull type, and the operation is more convenient.

Through the above-mentioned content, it is difficult to find that the vascular clamp grasping forceps that this embodiment provided has realized the displacement control to the vascular clamp through grabbing and putting the link gear, has realized snatching and releasing the vascular clamp through push-and-pull link gear, not only simple structure has still reduced operating personnel's the operation degree of difficulty to the vascular clamp, makes things convenient for the use when medical staff performs the operation.

In the present invention, unless expressly stated or limited otherwise, a first feature "connected" or "fixedly connected" to a second feature may be such that the first feature and the second feature are in direct contact, or such that the first feature and the second feature are in indirect contact via an intervening medium.

The particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. A vascular clip, comprising: the clamp comprises an upper clamp head (1), a lower clamp head (2), a sliding block (3) and a shell (6);

the upper clamp head (1) and the lower clamp head (2) are arranged in the shell (6), the upper clamp head (1) is hinged with the lower clamp head (2), the first elastic piece (4) is fixedly connected with the upper clamp head (1) and the lower clamp head (2) respectively, and the first elastic piece (4) enables the upper clamp head (1) and the lower clamp head (2) to be clamped under the state of no external force;

the head end of the sliding block (3) is arranged between the upper clamp head (1) and the lower clamp head (2) in a sliding manner, when the sliding block (3) moves towards the proximal end, the head end of the sliding block (3) enables the upper clamp head (1) and the lower clamp head (2) to be opened, a second elastic piece is arranged on the sliding block (3), and the second elastic piece is used for providing thrust towards the distal end for the sliding block (3);

the tail end of the sliding block (3) penetrates out of the shell (6), and the tail end of the sliding block (6) is used for being connected with external equipment.

2. Vascular clamp according to claim 1, characterized in that the upper clamp head (1) is hinged to the lower clamp head (2) by means of a rotation shaft (5), and that the rotation shaft (5) extends out of the two ends of the upper clamp head (1) and the lower clamp head (2) and is fixed to the inner side wall of the housing (6) respectively.

3. Vascular clamp according to claim 1, characterized in that the head end of the slider is a quadrangular frustum, and a slideway adapted to the quadrangular frustum is arranged between the upper clamp head (1) and the lower clamp head (2).

4. The vascular clamp of claim 1, wherein the tail of the slider has a rounded ellipsoid.

5. Vascular clamp according to claim 1, characterized in that the housing (6) is cylindrical, the head end of the housing (6) being larger in diameter than the tail end, the tail end of the housing forming a truncated cone, the head end of the housing (6) being open for the flaring of the upper and lower clamp heads.

6. Vascular clamp grasper, at least applicable to vascular clamps according to any of claims 1-5, characterized in that it comprises a sleeve body (8), a fixed handle (23), an upper grasper (9), a lower grasper (9), a grasping and releasing linkage, a first handle (17), a pull rod (12), a push-pull linkage, a second handle (21);

the upper grabbing clamp (9), the lower grabbing clamp (9) and the pull rod (12) are all positioned in the sleeve main body (8);

the first handle (17) is respectively connected with the upper grabbing clamp (9) and the lower grabbing clamp (9) through the grabbing and placing linkage mechanism and is used for controlling the grabbing and placing actions of the upper grabbing clamp (9) and the lower grabbing clamp (9);

the second handle (21) is connected with the pull rod (12) through a push-pull linkage mechanism and is used for controlling the axial movement of the pull rod (12), and a connecting mechanism used for being connected with an external vascular clamp is arranged at the far end of the pull rod (12).

7. The grasper of claim 6 wherein the grasping and releasing linkage includes: the two pulleys (11), the rope (11), the first movable shaft (13), the first connecting rod (25), the first handle movable shaft (15) and the first fixed shaft (16);

the upper grabbing clamp (9) and the lower grabbing clamp (9) are elastic material pieces, so that the upper grabbing clamp (9) and the lower grabbing clamp (9) are close under the state of no external force, and the distal ends of the upper grabbing clamp (9) and the lower grabbing clamp (9) are fixedly arranged in the sleeve main body (8);

the first handle (17) is hinged with the fixed handle (23) through the first fixed shaft (16), the tail end of the first connecting rod (25) is hinged with the first handle (17) through the first handle movable shaft (15), and the first movable shaft (13) is arranged at the head end of the first connecting rod (25) and is positioned in the first chute (14);

the two pulleys (11) are fixedly arranged on the inner wall of the sleeve main body (8), the rope (11) is simultaneously arranged on the two pulleys (11) and the first movable shaft (13) in a penetrating mode, and two ends of the rope (11) are fixedly connected with the tail ends of the upper grabbing clamp (9) and the lower grabbing clamp (9) respectively;

the grabbing and releasing linkage mechanism is used for driving the tail end of the upper grabbing clamp (9) and the tail end of the lower grabbing clamp (9) to be far away from each other when the first handle (17) rotates anticlockwise relative to the fixed handle (23).

8. The grasper of claim 6 wherein the push-pull linkage includes: the second movable shaft (18), the second connecting rod (26) and the second fixed shaft (22) of the second handle movable shaft (20);

the second handle (21) is hinged with the fixed handle (23) through a second fixed shaft (22), the tail end of the second connecting rod (26) is hinged with the second handle (21) through a second handle movable shaft (20), the pull rod (12) is hinged with the head end of the second connecting rod (26) through a second movable shaft (18), and the second movable shaft (18) is positioned in a second sliding groove (19);

the push-pull linkage mechanism is used for driving the pull rod (12) to move towards the tail end when the second handle (21) rotates clockwise relative to the fixed handle (23).

9. The grasper of claim 6 wherein the attachment mechanism includes a pair of grasping teeth (24 a) (24 b) that open when the pull rod (12) moves toward the tail end of the pull rod and close when moving toward the head end of the pull rod.

10. The grasping forceps according to claim 6, wherein the sleeve body (8) is cylindrical, a boss is provided on an inner wall of a front end of the sleeve body (8), and a height of the boss is increased toward a rear end of the sleeve body (8).