CN114795395A

CN114795395A - Pincers, suction assembly and have its suction pincers

Info

Publication number: CN114795395A
Application number: CN202210545237.2A
Authority: CN
Inventors: 冯冬刚; 郑鹏; 吴秋菊
Original assignee: Zhejiang Medical Technology Co ltd
Current assignee: Zhejiang Medical Technology Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-07-29

Abstract

The invention provides a pair of suction tongs which has simple structure, stable clamping and safe and accurate operation, and the suction tongs comprises a machine shell, a trigger, a tong body assembly and a suction assembly, wherein the machine shell comprises a handle part and an installation part; the trigger is pivotable relative to the grip portion; the trigger and the clamp body assembly are matched with each other to attract the assembly to comprise a suction tube, one end of the suction tube is arranged in the installation part, the other end of the suction tube extends towards the outer side, the suction tube is communicated with the clamp tube, and a fluid channel is integrally limited by the suction tube and the clamp tube.

Description

Pincers, suction assembly and have its suction pincers

Technical Field

The invention relates to the field of medical instruments, in particular to suction forceps.

Background

Clinically, when tissue is separated through operation, surgical instruments such as an electric knife and a surgical clamp are often used for separating the tissue, and bleeding often occurs at the time; the use of the electrotome often produces smog, the hemorrhage during the tissue separation and the smog produced by the electrotome influence the operation visual field, and another assistant is often required to use the aspirator clinically, but the assistant and the main knife are difficult to be matched with each other, and under the condition that the operation space is very limited, a plurality of people operate simultaneously, the operation space is greatly influenced, and the attraction effect is very limited. In addition, the opening of the minimally invasive surgery on the human body is increased by operating a plurality of instruments simultaneously, and unnecessary pain is caused to the recovery of the patient. The integration and reduction of instruments may reduce unnecessary openings. Reducing the operation time.

Currently, partial nephrectomy requires instruments such as: electric hook, vascular clamp, laparoscope, separation forceps, electric scissors, suction forceps, high-frequency electric knife, etc. The current surgical procedure is briefly followed: 1) and (5) disinfecting and laying sheets, and connecting and fixing various pipelines and conducting wires. An incision with a length of about 8cm is made at a position 2cm above the axillary midline iliac crest by a No. 11 knife, a vascular clamp is opened, and blood is wiped off with a tail, and enters the gap behind the abdominal cavity. 2) And (3) placing the self-made air bag, injecting 600-800 mL of gas by using a 50mL injector, expanding, maintaining for 3-5 min, emptying and pulling out the air bag, and establishing a retroperitoneal space. 3) Placing 10cm Trocar, 7' silk suture on the muscular layer and skin of small incision on iliac crest at the first incision, placing observation mirror, and injecting CO ₂ A gas. 4) From this pilot hole, puncture under the posterior iliac line costal margin and under the anterior axillary costal margin, respectively, and 10mm and 5mm Trocar were placed. 5) The perirenal fascia is opened by the head of the suction delivery device and the electric hook, perirenal fat is removed, renal parenchyma and cancer are exposed, renal artery is dissociated, and the vascular clamp is delivered into the lacuna. 6) Block renal artery, time! Time to block renal pedicles: generally, the damage to the kidney is controlled within 15-30 min, the damage to the kidney is slight and/or reversible, the blocking time exceeds 40min, the kidney can be irreversibly damaged, the kidney function is damaged, and the significance of the urban partial nephrectomy is achieved. 7) Confirming the resection range according to the size of the tumor under an endoscope so as to avoid tumor body residue, separating forceps, and electrically shearing to separate part of kidney tissues containing tumor bodies. During which bleeding is removed using suction forceps. 8) Needle-holding, special suture to suture the parenchymal stump, covering with hemostatic gauze or electric knife to stop bleeding. 9) The vascular clamp is withdrawn, the bleeding condition is observed, and the hemostasis is thoroughly realized.

The minimally invasive surgical operation is widely applied in clinic in recent years, and is paid attention by clinicians and patients due to small minimally invasive injury, less bleeding and quick postoperative recovery. The abdominal cavity has multiple types of biological soft tissues, large area, delicate tissue structure, smooth surface and flexibility. In laparoscopic surgery, surgical forceps and suction apparatus are the most commonly used minimally invasive surgical instruments. The prior laparoscopic surgical forceps generally realize the operation of tissues by the mechanical clamping of two forceps jaws, and have the problems of labor-consuming operation, easy slipping or damage and the like when clamping and dragging the tissues. The negative pressure technology is widely applied in the medical field, realizes the clamping and negative pressure suction of tissues through the combination of the negative pressure and the clamping mechanism, has the advantages of convenient, flexible and quick operation and comfortable use of instruments, and ensures that doctors can rapidly and accurately cut diseased tissues. After the renal pedicle is blocked, the time is controlled within 15-30 min, so that instruments which are convenient, flexible and quick to operate and comfortable to use are needed, and doctors can cut diseased tissues quickly and accurately.

CN105078542A, CN204951146U and CN201275107Y all disclose a surgical forceps with suction function, however, the handle is held by fingers, the torque cannot be effectively transmitted, and in addition, the hand is easy to be fatigued, and the tissue damage is easily caused by misoperation; and the size of the forceps head forceps rod is too large to pass through the puncture outfit, the forceps head can only keep one state in the body, the angle can not be adjusted, the clamping is inconvenient, and in addition, when the forceps head is in a spoon shape, the forceps body can not clamp the tissue of the human body.

Disclosure of Invention

The invention provides a pair of suction tongs which has simple structure, stable clamping and safe and accurate operation, and the suction tongs comprise:

the shell comprises a handle part and a mounting part, the mounting part is mounted in front of the handle part, the longitudinal axis of the mounting part extends transversely, and the handle part extends from bottom to top;

a trigger having a first end rotatably coupled to the mounting portion, the trigger being pivotable relative to the handle portion;

the clamp body assembly comprises a clamp pipe and a clamp sheet, wherein the axis of the clamp pipe extends along the transverse direction, one end of the clamp pipe is arranged in the installation part, the other end of the clamp pipe extends out of the installation part, the clamp sheet is hinged to the part, extending out of the installation part, of the clamp pipe so that the clamp pipe and the clamp sheet form a clamp, the clamp sheet is hinged to the installation part, the trigger is matched with the clamp pipe to drive the clamp pipe to displace along the horizontal direction, and then the clamp sheet is driven to open or close compared with the clamp pipe;

the suction assembly comprises a suction tube, one end of the suction tube is arranged in the installation part, the other end of the suction tube extends towards the outer side, the suction tube is communicated with the forceps tube, and a fluid channel is integrally limited by the suction tube and the forceps tube.

Preferably, the clamp body assembly further comprises an outer tube, the clamp tube is nested inside the outer tube, and the clamp sheet is hinged to the outer tube to achieve movable connection between the clamp sheet and the mounting portion.

Preferably, a movable seat is arranged in the installation part, a communicating cavity which is through from front to back is formed in the movable seat, the proximal end of the forceps tube is connected with the communicating cavity in a sealing mode and can rotate relative to the communicating cavity, and the distal end of the suction tube is connected with the communicating cavity in a sealing and communicating mode.

Preferably, the trigger includes the spanner and forms the connecting seat in the spanner upper end, the connecting seat is rotationally installed in the installation department, form vertical spout on the connecting seat, remove the seat with vertical spout sliding connection, be equipped with first elasticity piece that resets between connecting seat and the installation department.

Preferably, the trigger further comprises an elastic stopping portion, the elastic stopping portion is arranged through the mounting portion, and the elastic stopping portion is used for limiting the rotation of the wrench.

Preferably, a rotating part is arranged on the pipe section of the outer pipe extending out of the mounting part, and the rotating part is rotated to drive the nipper blades hinged to the rotating part to rotate together, so that the nipper pipes are driven to rotate together.

Preferably, the connecting seat comprises a pivot portion, a left connecting plate and a right connecting plate, the left connecting plate and the right connecting plate are connected to the left side and the right side of the pivot portion, a left sliding groove and a right sliding groove which extend vertically are formed in the left connecting plate and the right connecting plate respectively, the pivot portion is pivoted on the inner side of the mounting portion, a left sliding piece and a right sliding piece are formed on the moving seat towards the left side and the right side respectively, and the left sliding piece and the right sliding piece are connected with the left sliding groove and the right sliding groove in a sliding mode respectively.

Preferably, the outer pipe is in sealing fit with the opening of the mounting part through a sealing ring.

Preferably, the suction assembly further comprises an adjustment button disposed through the housing to act on the suction hose to different degrees when the adjustment button is pressed to different depths, thereby adjusting the suction flow rate of the suction hose.

Preferably, the adjusting button comprises a pressing part and an intermittent motion part, the adjusting button is arranged at the corner connecting part of the mounting part and the handle part, the pressing part penetrates through the shell, the intermittent motion part is arranged between the pressing part and the suction hose, and the pressing part drives the gap motion part to act on the suction hose in different degrees.

The invention further provides a suction assembly, which adopts the suction assembly.

The invention still further provides pliers that employ the trigger and pliers body assembly described above. The suction forceps provided by the invention integrates the suction assembly and the forceps body assembly together to form the same instrument, and the separation and suction functions are convenient and reliable to switch.

When the suction forceps provided by the invention executes a suction function or picks up tissues, the elastic stopping part locks the forceps body, so that tissue damage is avoided, and meanwhile, the fatigue of doctors is reduced.

In addition, the adjusting button provided by the invention controls the opening and closing and the flow of negative pressure suction when the tumor is resected. The invention provides a suction forceps for partial nephrectomy under a laparoscope, which has simple structure, stable clamping and safer and more accurate operation.

Drawings

FIG. 1 is a schematic structural diagram of an aspiration forceps provided in an embodiment of the present invention;

FIG. 2 is a schematic view of the opening of the jaws of the suction forceps according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the suction forceps according to an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of the suction forceps provided in the embodiment of the present invention;

FIG. 5 is a schematic view of a portion of a rotor according to the present invention;

FIG. 6 is a schematic view of the combination of the forceps body assembly and the suction assembly of the present invention;

FIG. 7 is a schematic structural diagram of an adjustment button according to an embodiment of the present invention;

FIGS. 8-9 are schematic views of the use of the adjustment button provided in FIG. 7;

FIGS. 10-11 are schematic views of adjustment buttons provided in accordance with another embodiment of the present invention;

fig. 12-13 are schematic views of the use of the adjustment button provided in fig. 10-11.

Detailed Description

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An attraction clamp provided by an embodiment of the present invention will be described below with reference to fig. 1 to 13.

Referring to fig. 1-4, an attracting forceps includes a housing 1, a trigger 2, a forceps body assembly 3 and an attracting assembly 4, the housing 1 includes a handle portion 11 and a mounting portion 12, the mounting portion 12 is mounted in front of the handle portion 11, a longitudinal axis of the mounting portion extends transversely, the "longitudinal axis" refers to an axis extending along a length direction of a corresponding component, and the handle portion extends from bottom to top; the forceps body assembly and the suction assembly are arranged on the installation part to respectively realize clamping and suction functions, the suction assembly sucks biological tissues clamped by the forceps body assembly out of the body, and the trigger is used for driving the forceps body to open and close to realize the clamping and suction functions.

The suction forceps provided by the invention is mainly applied to the kidney partial resection, the separation forceps and the suction forceps are integrated into the same medical instrument, so that the separate separation forceps and the suction forceps do not need to be used for repeatedly entering the abdominal cavity in sequence at different stages of the operation, the flow is simplified, and the operation time is shortened. And the manual control part that this implementation provided is gun type grab handle form, has abandoned the pincers pole form of current finger control, uses lightly laborsaving, and is controlled more easily.

In some embodiments disclosed in the present invention, the longitudinal axis of the handle portion 11 is perpendicular to or intersects with the longitudinal axis of the mounting portion 12 at an acute angle, so that the mounting portion 12 is in a horizontal state, and the handle portion is in a vertical or vertical inclined state, so that a user can hold the handle with a palm, and the grip handle has comfortable hand feeling, is easier to apply force, and is less prone to fatigue. In addition, because the mounting part is arranged in front of the handle part, the whole body can be transversely arranged on the table top, the placement is more convenient, and the clamp body is not easy to be polluted; the present embodiment provides a handle portion having a geometry that is ergonomic and easy to hold by a user.

However, the disclosure is not limited thereto, and in other embodiments of the disclosure, the suction forceps may not include a suction assembly, and at this time, the user controls the opening and closing of the forceps body assembly by controlling the trigger to implement the clamping function, that is, the forceps provided by the present disclosure does not have the suction function, and certainly, the forceps body assembly provided by the present disclosure may be matched with other suction apparatuses to implement the suction function.

It should be noted that the directions or positional relationships indicated by "up", "down", "near", "far", "left", "right", "front", "back", "lateral", "axial", and the like in the present specification are all directions or positional relationships based on the fact that the suction forceps are placed on a horizontal plane, where "near" is a side of the suction forceps close to the doctor, "far" is a side of the suction forceps away from the doctor, and "lateral" is a horizontal direction or a substantially horizontal direction.

In some embodiments of the present invention, the trigger 2 is rotatably connected to the mounting portion 12, and in some embodiments of the present invention, the trigger 2 is located in front of the handle portion 11 and the longitudinal line thereof is parallel or approximately parallel to the longitudinal axis of the handle portion, so that the user can easily grip and pull the trigger, the operation is flexible, and the hand fatigue occurs.

Trigger 2 can pivot for this handle portion 11, and pincers body subassembly 3 includes that the axis is along transversely extending's pincers pipe 31 and pincers piece 32, pincers pipe 31 one end sets up in installation department 12, the other end of pincers pipe 31 stretches out installation department 12, the horizontal pincers pipe section of pipe portion that promptly runs through this installation department and sets up, and the remaining pipe section stretches out the installation department, and pincers piece 32 articulates on the pipe section that pincers pipe 31 stretches out installation department 12, so the near side pipe section of pincers pipe 31 forms the jaw with pincers piece 32, trigger 2 is used for controlling pincers pipe 31 and pincers piece 32 closure or opens in order to realize pressing from both sides the function. In addition, the forceps tube defines a fluid channel for the biological tissue or liquid to flow through so as to be combined with the suction assembly to realize the negative pressure derivation of the biological tissue for the forceps.

In some embodiments of the present invention, the trigger 2 converts its own rotation into a horizontal translation of the clamp tube 31 through a transmission mechanism, and the clamp piece 32 can be directly hinged to the mounting portion or further hinged to the mounting portion through an intermediate connecting member; thus, referring to fig. 2, when the trigger drives the clamp tube 31 to move forward in the horizontal direction, the clamp piece in the closed state is converted into the open state by being pulled by the mounting portion; specifically, when the trigger 2 is pulled, the clamp tube 31 is moved forward or backward in the horizontal direction, and the clamp piece 32 hinged to the clamp tube 31 can be opened or closed compared to the clamp tube 31. In some embodiments, a first elastic reset piece 6 is arranged between the trigger 2 and the mounting portion 12, for example, the trigger 2 is manually pulled to pivot towards the handle portion 11, the trigger 2 applies force to the first elastic reset piece 6, the first elastic reset piece 6 is switched from a relaxed state to a tensed state, and the clamp tube 31 moves backwards to drive the clamp piece 32 to close; and (3) loosening the trigger 2, wherein the first elastic resetting piece 6 provides resetting power for the trigger 2, the trigger 2 drives the clamp tube 31 to move forwards, and the clamp piece 32 which is restrained by the mounting part is opened to form a clamp together with the clamp tube. It will be appreciated that the angle of the jaw formed by the jaw tube 31 and the jaw piece 32 can be controlled by controlling the angle of pivoting of the trigger 2; in the present embodiment, the maximum opening angle of the forceps blades 32 is 60 ° compared to the forceps tube 31.

In this embodiment, the forceps body assembly further includes an outer tube 33, the forceps tube 31 is nested inside the outer tube 33, the outer tube 33 does not obstruct the translational movement of the forceps tube 21, the forceps blades 32 are hinged on the outer tube 33 to realize the movable connection between the forceps blades 32 and the mounting portion, so that the opening or closing of the forceps blades can be realized by the translational movement of the forceps tube 31; illustratively, a part of the radial pipe section at the distal end of the outer pipe 33 extends forward to form a connecting piece 331, the proximal side of the forceps piece is respectively rotatably connected with the forceps pipe 31 and the connecting piece through the first movable shaft 311 and the second movable shaft 321, the forceps pipe is displaced in the horizontal direction to drive the second movable shaft to be displaced in the horizontal direction, and then the forceps piece is driven to rotate to realize opening or closing.

Specifically, the front end of the forceps tube 31 is provided with a through hole 311. In some embodiments of the present invention, the front side of the mounting portion 12 forms an opening 121, and the outer tube 33 extends through the opening 121 to enter the mounting portion 12; alternatively, the outer tube 31 is pivotally connected to the opening, and the pair of jaws is hinged to the portion of the outer tube 33 extending outside the mounting portion to limit the forward and backward translational movement of the pair of jaws 32, thereby achieving the opening and closing of the pair of jaws 32 as compared to the pair of tubes 31. In addition, since the inside of the human tissue is a three-dimensional structure, and the shape and position of the lesion tissue are different, in some embodiments of the present invention, referring to fig. 5 and 6, the rotating member 7 is disposed on the tube section of the outer tube 33 extending out of the mounting portion; illustratively, the rotating part is a rotating disc 7 sleeved on the outer tube 33, and by rotating the rotating disc 7, the nipper blades 32 hinged to the rotating disc are driven to rotate together, so as to drive the nipper tube 31 to rotate together, thereby realizing the rotatable adjustment of the nipper tube and the nipper blades; in this embodiment, the rotating disc 7 abuts against the front side of the mounting portion 12, and a user can adjust the angle of the forceps holder through the arrangement of the rotating disc 7 to meet the requirements of forceps holding at different angles. In addition, because the forceps sheets provided by the invention can be opened or closed, but the forceps tube can only translate but can not be opened or closed, compared with the conventional forceps which are opened or closed mutually, the forceps has insufficient flexibility when clamping tissues, and the forceps can rotate 360 degrees, so that the technical problem of insufficient flexibility of the forceps is effectively solved.

In some embodiments of the present invention, the suction assembly at least includes a suction tube 51 for sucking the biological tissue or liquid in the forceps tube 31, and thus, the suction tube 51 may be connected to the forceps tube 31 in fluid communication, and for example, the suction tube 51 may be disposed through the body.

In some other embodiments of the present invention, due to the aforementioned requirement for the rotation of the forceps tube, one end of the forceps tube needs to be rotatably installed inside the installation portion, and in order to communicate the fluid channel of the forceps tube with the suction assembly for guiding out the clamped biological tissue, the forceps tube needs to be matched with the suction assembly, based on which, the forceps body assembly disclosed in this embodiment further includes a movable seat 13 installed inside the installation portion 12, a communicating cavity penetrating from front to back is formed inside the movable seat 13, the forceps tube 31 is connected with the communicating cavity in a sealing manner, the forceps tube 31 is rotatably disposed inside the communicating cavity so that the forceps tube can rotate relative to the communicating cavity, and the distal end of the suction tube 51 is connected with the communicating cavity in a sealing manner, so that the forceps tube 31 and the suction tube 51 are in fluid communication through the communicating cavity 100, so that the biological tissue, the liquid and the like can be sucked out of the body through the fluid channel, meanwhile, the pivoting connection of the clamp pipe and the movable seat realizes 360-degree rotation of the clamp pipe and the clamp sheet, so that the angle of the clamp can be adjusted.

Specifically, the clamp tube 31 is hermetically connected to the communication cavity by a sealing ring 300.

In some embodiments of the present invention, the movable seat 13 disclosed in this embodiment further cooperates with a trigger to drive the clamp tube to move back and forth, the trigger 2 includes a wrench 21 and a connecting seat 22 disposed at an upper end of the wrench 21, the connecting seat 22 is rotatably mounted in the mounting portion 12, a vertical sliding groove is formed on the connecting seat 22, the movable seat 13 is slidably connected with the vertical sliding groove, the wrench 21 is pulled, the connecting seat 22 cooperates with the movable seat 13 to convert the pivot displacement of the trigger 2 into the horizontal movement of the movable seat, and finally, the horizontal movement of the clamp tube 31 is driven, so that the movable seat and the connecting seat realize the function of the aforementioned transmission mechanism.

In this embodiment, the connecting seat 22 includes a pivot portion 221, and a left connecting plate 222 and a right connecting plate (not shown) connected to the left and right sides of the pivot portion, the left connecting plate 222 and the right connecting plate respectively form a left sliding slot 220 and a right sliding slot extending vertically, the pivot portion 221 is pivotally installed inside the mounting portion 12, the moving seat 13 respectively forms a left sliding member 131 and a right sliding member towards the left and right sides, and the left sliding member 131 and the right sliding member are respectively slidably connected with the left sliding slot 220 and the right sliding slot.

The first elastic resetting piece 6 is arranged between the pivoting part 221 and the mounting part 12, as mentioned above, the first elastic resetting piece 6 is suitable for providing the resetting power for resetting the trigger 2, so that the trigger 2 has a tense state and a resetting state, when the trigger is in the tense state, the clamp tube 31 and the clamp piece 32 are closed or in a small angle opening, when the trigger 2 is in the resetting state, the clamp tube 31 and the clamp piece 32 are in a maximum angle opening;

in some preferred embodiments, the trigger 2 further includes an elastic stopping portion 23, the elastic stopping portion 23 is disposed through the mounting portion, and the elastic stopping portion 23 is used for limiting the resetting of the trigger to keep the trigger in a tense state, so that when the suction assembly performs a suction function, the forceps holder is locked by the elastic stopping portion, and tissue damage caused by misoperation of a doctor in a suction process is avoided; in addition, when the jaws are required to perform the gripping function, the gripping function is realized by directly pulling the trigger, namely unlocking the jaws. Optionally, the elastic stopping part can be pressed, the elastic stopping part retracts, the trigger automatically resets, the clamp is opened, and the clamping function is achieved.

Specifically, the elastic stopping portion comprises an elastic button arranged through the mounting portion and a stop block connected with the elastic button, the button is pressed, and the stop block axially moves towards the direction of the pivot portion to stop the pivot of the pivot portion, so that the wrench is locked.

In the embodiment, the outer tube 33 is in sealing fit with the opening of the mounting part through the sealing ring 35, so that the biological tissue or liquid is prevented from entering the mounting part under the action of negative pressure to cause pollution and equipment damage; the sealing ring may also be arranged between the turntable and the outer tube 33.

In some preferred embodiments, in this embodiment, one surface of the forceps tube 31 corresponding to the forceps sheet 32 is a plane 312, and the other surfaces are arc surfaces extending circumferentially, so that the forceps formed by the forceps tube 31 and the forceps sheet 32 can be clamped more conveniently and are not easy to fall off; in particular, the clamp tube and the clamp piece are provided with sawtooth-shaped edges, so that the formed clamp can be peeled and clamped more easily.

In some embodiments of the present invention, the suction tube is a suction hose 51 extending from the movable seat to the proximal side, penetrating the mounting portion and the handle portion, and finally extending to the outside of the housing, the suction hose facilitating floating under the belt of the movable seat 13.

In some embodiments of the present invention, referring to fig. 7 and 11, the suction assembly further includes an adjusting button 9, the adjusting button 9 is disposed through the housing 1, and acts on the suction hose 51 to different degrees when the adjusting button 9 is pressed to different depths, so as to adjust the suction flow of the suction hose 51; in some embodiments, the adjustment button 9 is capable of pressing the suction hose 51 in the initial state so that the suction hose is in a fully closed state, without negative pressure suction. When the user presses the adjustment button 9 with different force, the closing degree of the suction hose 51 is different, thereby realizing the shift control of the suction flow rate of the suction hose. The adjusting button can adopt various structural forms to realize the gear control function. In some preferred embodiments of the present disclosure, the adjusting button includes a pressing portion 90 and an intermittent motion member, the adjusting button is disposed at a corner connection portion of the mounting portion and the handle portion, the pressing portion 90 is disposed through the casing 1, the intermittent motion member is disposed between the pressing portion 90 and the suction hose, and the pressing portion 90 drives the gap motion member to act on the suction hose to different degrees.

In some embodiments disclosed in the present invention, the clearance motion element includes a lever element 91 and a link 95 movably disposed inside the mounting portion, a second elastic reset element 96 is disposed between the pressing portion 90 and the mounting portion 12, a third elastic reset element 97 is disposed between the link 95 and the mounting portion 12, and the second elastic reset element 96 and the third elastic reset element 97 provide reset power for the pressing portion and the link to reset; the connecting rod 95 is provided with a convex tongue 93, the lever member 91 is provided with an upper arm 911 and a lower arm 912, the lever member 91 and the pressing part 90 are connected, the upper arm 911 of the lever member is circumferentially provided with a plurality of tooth grooves 913, the convex tongue 93 on the connecting rod and the tooth grooves 913 on the lever member are integrally similar to a ratchet structure, the clearance motion of the ratchet structure realizes different degrees of compression of the lower arm 912 of the lever member on the suction hose, the pressing part 90 is pressed to drive the lever member 91 to realize radial rotation of different degrees, and when different tooth grooves of the upper arm of the lever member 91 are matched with the stopping part of the convex tongue of the connecting rod, the lower arm of the lever member is different in the degree of compression on the suction hose, so that the flow regulation is realized.

Referring to fig. 7, in some embodiments, referring to fig. 7 to 9, the clearance motion member further includes a support shaft 92 disposed inside the mounting portion, the support shaft 92 is provided with an axially extending sliding slot, the lever member 91 is pivotally mounted on the support shaft 92 to enable the lever member to radially rotate around the support shaft, the connecting rod 95 is provided with a movable block slidably connected in the sliding slot, a plurality of toothed slots on the lever member are adapted to drive the movable block to axially displace along the sliding slot of the support shaft (the length extending direction of the support shaft) to drive the protruding tongue to axially displace, i.e. the radial rotation of the toothed slot pushes the protruding tongue to axially displace so as to make it cooperate with the corresponding toothed slot, and the third elastic restoring member provides an axial restoring power for the protruding tongue to keep the lever member at a certain position, keep the gear, continue to press and press the splenium, the tooth's socket drive lever spare of radial outermost side removes the cooperation with the protruding tongue of connecting rod, and the lever spare can reset fast under the effect that the second elasticity resets, and the connecting rod drives the protruding tongue on the connecting rod and resets under the effect that the third elasticity resets, and this process is when realizing gear adjustment, and the adjustment button operation is more stable, changes and resets. In this embodiment, two tooth grooves 913 are formed at intervals on the radial outer side of the upper arm 911 of the lever member, and the pushing block 915 is formed on the radial outer side of the two tooth grooves, as shown in fig. 8 and 9, this structure provides a 3-gear suction shift position; specifically, 1, initial state: the pressing part is not pressed down, the lower arm of the lever piece presses the suction hose, the suction hose is always closed, and no negative pressure suction exists; 2. small flow suction: the pressing part presses the 1 gear, the first tooth groove is matched with the convex tongue to attract the hose to be opened by half, and the negative pressure system can pass 50% of flow; 3. large flow suction: the pressing part presses the 2 gear, the second tooth groove is matched with the convex tongue, the suction hose is completely opened, and the negative pressure system can pass 100% of flow; 4. resetting the lever piece: the pressing part presses 3 stops, the pushing block 915 of the lever part pushes the connecting rod to axially move to remove the stopping function of the convex tongue on the lever part, and the lever part and the connecting rod are reset under the action of the elastic resetting part.

In other embodiments, as shown in fig. 10-13, the clearance moving member includes a support shaft a900 and a support shaft B901 disposed inside the mounting portion, the lever member 91 is pivotally mounted on the support shaft a900 to enable the lever member 91 to rotate radially around the support shaft a900, the connecting rod 95 is pivotally mounted on the support shaft B901 to enable the connecting rod 95 to rotate radially around the support shaft B901, the plurality of splines 913 on the lever member 91 are adapted to drive the connecting rod to rotate radially to drive the tongue 93 to engage with the lever member 91, i.e. the radial rotation of the splines pushes the tongue 93 to rotate radially to engage with the corresponding splines to stop, so that the lever member is held at a certain position, and continues to press the lever pressing portion, and the radially outermost spline drives the lever member to disengage from the connecting rod tongue, the support shaft A900, the support shaft B901 and the tongue form a triangular structure, and the lever member is locked stably. When the pressing part is loosened, the lever part can be quickly reset under the action of the second elastic resetting part, the rear connecting rod drives the convex tongue on the connecting rod to reset under the action of the third elastic resetting part, and in the process, when gear adjustment is realized, the operation of the adjusting button is more stable, and the resetting is easier. In this embodiment, two tooth grooves 913 are formed on the radial outer side of the upper arm 911 of the lever member at intervals, and the radial outer sides of the two tooth grooves form a pushing block 915, so that the structure provides a 3-gear suction gear; specifically, as shown in fig. 10 to 11, 1, initial state: the pressing part is not pressed down, the lower arm of the lever piece presses the suction hose, the suction hose is always closed, and no negative pressure suction exists; 2. small flow suction: the pressing part presses the 1 gear, the first tooth groove is matched with the convex tongue to attract the hose to be opened by half, and the negative pressure system can pass 50% of flow; 3. large flow suction: the pressing part presses the 2 gear, the second tooth groove is matched with the convex tongue, the suction hose is completely opened, and the negative pressure system can pass 100% of flow; 4. resetting the lever piece: the pressing part presses 3 stops, the pushing block 915 of the lever part pushes the connecting rod to axially move to remove the stopping function of the convex tongue on the lever part, and the lever part and the connecting rod are reset under the action of the elastic resetting part.

In this embodiment, the first elastic restoring member 6, the second elastic restoring member 96 and the third elastic restoring member 97 are compression springs, and it is understood that, in some embodiments, the connecting rod is axially displaced, and the extending direction of the second elastic restoring member is consistent with the longitudinal extending direction of the supporting shaft, so as to provide restoring power for the axial restoring of the tongue, and finally, the tongue is urged to be matched with the tooth groove stopper; in other embodiments, the connecting rod is radially displaced, and the extension and retraction direction of the second elastic restoring piece is perpendicular to the longitudinal extension direction of the supporting shaft, so as to provide restoring power for the radial restoring of the tongue and finally promote the tongue to be matched with the tooth groove stop.

The tongue 93 is provided on a connecting rod 95. In some embodiments, the connecting rod 95 is movably connected to the supporting shaft 92, and the lever member rotates radially while driving the radially distributed tooth grooves 913 to cooperate with the protruding tongues for stopping in turn, so that the radial rotation of the upper arm of the lever drives the swing of the lower arm, and finally the adjustment of the suction flow is achieved.

As shown in fig. 1, the adjustment button that this embodiment provided is installed in the corner junction of installation department and handle portion, then for the radial rotation of intermittent motion spare in order to act on the attraction hose and provide convenient condition, this adjustment button's structure and the shape that sets up of casing match, the doctor is at the in-process that uses, can adopt single-hand control pincers to get process and attraction process, adopt the palm to grip the handle portion, when needs pincers get, the trigger is withheld to ring finger and little finger, when needs attract, the thumb presses adjustment button, easy and simple to handle is quick, give up two doctors of present needs and accomplish the operation, in addition, also need not loaded down with trivial details adjustment gesture, same gesture can be in order to accomplish whole operation.

Optionally, the lever piece is a bending arm with both the upper arm and the lower arm, the radial rotation of the upper arm on the lever drives the swing of the lower arm, and finally the adjustment of the suction flow is realized, and the end of the lower arm forms an arc design concave towards the suction hose so as to press the suction hose better.

The geometric shape of the gripping handle part of the suction forceps provided by the invention conforms to the human engineering principle, the force is convenient to apply, the hands of a doctor are not easy to fatigue, and the suction forceps are suitable for long-time clinical operation.

The suction assembly and the clamp body assembly are integrated together to form the same instrument, the separation and suction functions are switched conveniently and reliably, the clamp mouth is preferably kept closed when the instrument performs the suction function or picks up and separates tissues, and the elastic stop part provided by the invention can lock the separation clamp, so that the tissue damage is avoided, and the fatigue of a doctor is reduced.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. Suction forceps, characterized in that it comprises:

the pliers body assembly comprises a pliers tube and a pliers sheet, wherein the axis of the pliers tube and the axes of the pliers sheet extend transversely, one end of the pliers tube is arranged in the installation part, the other end of the pliers tube extends out of the installation part, the pliers sheet is hinged to the part of the pliers tube extending out of the installation part so that the pliers tube and the pliers sheet form pliers clamps, the pliers sheet is hinged to the installation part, and the trigger is matched with the pliers tube to drive the pliers tube to displace along the horizontal direction and further drive the pliers sheet to open or close compared with the pliers tube;

2. The suction forceps of claim 1, wherein the forceps body assembly further comprises an outer tube, the forceps tube is nested inside the outer tube, and the forceps blades are hinged to the outer tube to enable the forceps blades to be movably connected to the mounting portion.

3. The suction forceps according to claim 2, wherein a moving seat is provided in the mounting portion, a communicating chamber extending through the moving seat in the front-rear direction is formed in the moving seat, the proximal end of the forceps tube is connected to the communicating chamber in a sealing manner and is rotatable relative to the communicating chamber, and the distal end of the suction tube is connected to the communicating chamber in a sealing manner; preferably, the trigger includes the spanner and forms the connecting seat in the spanner upper end, the connecting seat is rotationally installed in the installation department, form vertical spout on the connecting seat, remove the seat with vertical spout sliding connection, be equipped with first elasticity piece that resets between connecting seat and the installation department.

4. The suction pliers of claim 3 wherein the trigger further includes a resilient stop disposed through the mounting portion, the resilient stop for limiting pivoting of the wrench.

5. The suction forceps as claimed in claim 2, wherein the outer tube has a rotatable member extending from the mounting portion, and rotation of the rotatable member causes the hinged jaws to rotate together, thereby rotating the forceps tube together.

6. The suction tongs as claimed in claim 4, wherein the connecting seat comprises a pivot portion and left and right connecting plates connected to left and right sides of the pivot portion, the left and right connecting plates respectively forming left and right slide slots extending vertically, the pivot portion being pivotally mounted inside the mounting portion, the moving seat respectively forming left and right sliding members towards left and right sides, the left and right sliding members being respectively slidably connected to the left and right slide slots.

7. A suction tong according to claim 6, characterized in that the outer tube is in sealing engagement with the opening of the mounting portion or the rotary member via a seal ring.

8. The suction tongs as claimed in claim 6, wherein the suction unit further comprises an adjustment button provided through the housing to act on the suction hose to different degrees when the adjustment button is pressed to different depths, thereby adjusting the suction flow rate of the suction hose; preferably, the adjustment button includes pressing portion and intermittent motion piece, the adjustment button sets up in the corner junction of installation department and handle portion, presses the portion to run through this casing setting, intermittent motion piece sets up and presses between portion and the suction hose, press the portion drive clearance motion piece to act on with different degree the suction hose.

9. A suction module, characterized in that the suction module according to any one of claims 1 to 8 is used.

10. A pair of pliers, characterized in that the pliers use the trigger and pliers body assembly as claimed in any one of claims 1 to 8.