CN105078542A - Operating forceps with negative pressure suction function - Google Patents

Abstract

The invention discloses a pair of operating forceps with a negative pressure suction function. The pair of operating forceps comprises forcep handles, forcep levers and a forcep head, wherein the forcep handles are connected with the forcep head through the forcep levers; the forcep head comprises a main claw and an auxiliary claw hinged to the main claw; the forcep handles comprise a fixed handle and a movable handle hinged to the fixed handle; a connector connected with a negative pressure system is arranged on the fixed handle, a handle negative pressure channel communicated with the connector is arranged in the fixed handle in a hidden manner, a lever negative pressure channel communicated with the handle negative pressure channel is arranged in one forcep lever, and a head negative pressure channel communicated with the lever negative pressure channel is arranged in the main claw in a hidden manner; a negative pressure hole communicated with the head negative pressure channel is further formed in the main claw; the fixed handle, the corresponding forcep lever and the main claw are sequentially fixedly connected; the movable handle is connected with the auxiliary claw through a pull rod penetrating through an inner cavity of one forcep lever, and the movable handle pulls the pull rod to control the auxiliary claw and the main claw to be closed and opened. According to the technical scheme, tissue can be clamped under the joint action of mechanical clamping and negative pressure clamping, and the pair of operating forceps has the advantages of controllability of clamping force, little damage to tissue, adaptability to various soft tissue organs, safe and precise operation and the like.

Description

A surgical forceps with negative pressure suction function

technical field

The invention relates to a laparoscopic surgical instrument in the medical field, in particular to a surgical forceps with negative pressure suction function.

Background technique

Minimally invasive surgery has been widely used clinically in recent years, and it has been paid attention by both clinicians and patients because of its minimally invasive injury, less bleeding, and quick postoperative recovery.

There are many kinds of biological soft tissues in the abdominal cavity, with large areas, delicate tissue structures, sticky, slippery and flexible surfaces. In laparoscopic surgery, forceps and suction are the most commonly used minimally invasive surgical instruments.

Existing laparoscopic surgical forceps generally operate on tissues through the mechanical clamping of two jaws, and there are problems such as laborious operation when clamping and pulling tissues, and easy slippage or damage.

Negative pressure technology is widely used in the medical field, such as suction devices for suctioning fluid during surgery, and sputum suction devices for nursing patients with tracheotomy, etc. The clamping of the tissue is realized by negative pressure, which has the advantages of preset clamping force, less tissue damage, and adaptability to various soft tissue organs.

In the prior art, there are few technical solutions that disclose the application of negative pressure technology to surgical forceps.

Contents of the invention

In order to overcome the deficiencies and defects mentioned in the above background technology, a surgical forceps with negative pressure suction function is provided, which has a simple structure, stable clamping, and safer and more precise operation.

In order to solve the above-mentioned technical problems, the technical solution proposed by the present invention is: a kind of surgical forceps with negative pressure suction function, including forceps handle, forceps rod and forceps head, forceps handle is connected with forceps head through forceps rod, described forceps head includes The main jaw and the auxiliary jaw hinged with the main jaw, the pincer handle includes a fixed handle and a moving handle hinged with the fixed handle, the fixed handle is provided with a connection head connected to the negative pressure system, the fixed handle There is a handle negative pressure channel communicated with the connecting head inside, a rod negative pressure channel connected with the handle negative pressure channel is arranged inside the pliers rod, and a negative pressure channel connected with the rod negative pressure is arranged inside the main claw. The negative pressure channel of the head connected with the pressure channel, the negative pressure mouth connected with the negative pressure channel of the head is also provided on the main claw, the fixed handle, the pliers rod and the main claw are fixed in sequence, and the moving handle The auxiliary jaw is connected to the auxiliary claw through a pull rod passing through the inner cavity of the pliers rod, and the pulling rod is driven by the moving handle to control the opening and closing of the auxiliary claw and the main claw. The technical solution of the present invention combines mechanical clamping and negative pressure clamping to realize tissue clamping, and has the advantages of preset clamping force, small tissue damage, and adaptability to various soft tissue organs.

Further preferably, the negative pressure nozzle is opened on the clamping surface of the main claw of the main claw, a main groove is provided around the opening of the negative pressure nozzle, and the auxiliary claw is opposite to the clamping surface of the main claw. An auxiliary groove is provided on the clamping surface, and the main groove is engaged with the auxiliary groove. The position of the negative pressure nozzle and the design of the anti-slip groove can better absorb tissue and prevent it from slipping.

Further preferably, the clamping surface of the auxiliary claw opposite to the clamping surface of the main claw is further provided with a through groove matching with the negative pressure nozzle. The cooperation between the through groove and the negative pressure nozzle makes it possible to produce better clamping and adsorption effect without damaging the specific tissue when faced with clamping the specific tissue.

Further preferably, the main claw is a thicker sheet structure, and the auxiliary claw is a thinner sheet structure than the main claw. The shape and thickness of the main claws are larger than those of the auxiliary claws, and the main claws can withstand greater force than the auxiliary claws during work.

Furthermore, the pliers rod is provided with parallel and mutually independent dual channels, one of which is a negative pressure channel for the rod, and the other is a pull rod channel through which the pull rod passes. The independent design of the rod negative pressure channel and the pull rod channel optimizes the structure of the clamp rod without affecting each other and is easy to replace.

Further preferably, the fixed handle includes a fixed handle connecting end provided with a fixed handle connecting hole, the moving handle includes a moving handle connecting end provided with a moving handle connecting hole, and the moving handle passes through a The connection hole and the fixed handle connection shaft of the fixed handle connection hole are connected in rotation with the fixed handle; the pull rod includes a claw connector, a moving handle connector, and The connecting part between the pull rods, the claw connecting head is rotatably connected with the auxiliary claw and makes the auxiliary claw rotate around the hinge joint between the auxiliary claw and the main claw, and the moving handle connecting head includes a ball head and a A ball handle with a cross-sectional diameter smaller than the cross-sectional diameter of the ball head. The moving handle is provided with a ball head slot for accommodating and engaging the ball head. When the moving handle rotates around the fixed handle, the ball head Sliding in the ball joint groove, the tie rod connecting part is located in the tie rod channel, the tie rod connecting part is provided with a tie bar limiting boss, and the inside of the tie rod channel is provided with a mechanism for limiting the pull rod in the The straight-line movement distance in the pull rod passage prevents the pull rod from being limited to the stopper of the boss.

Further preferably, the main claw is provided with a first pull rod connection shaft connected to the pull rod channel, the first pull rod connection shaft includes a first clamping platform and a head pull rod channel through which the pull rod passes, the first pull rod connection shaft A clamping platform is provided at the end of the connecting shaft of the first pull rod, the channel of the head rod is provided inside the connecting shaft of the first rod, the rod passes through the channel of the head rod and is connected with the secondary jaw, the The pull rod channel is provided with a first pull rod connecting sleeve sleeved on the outside of the first pull rod connecting shaft, and a first groove is provided inside the first pull rod connecting sleeve, and the first pull rod connecting shaft and the first pull rod The connecting sleeve is engaged and connected in the first groove through the first clamping table; the fixed handle also includes a fixed handle tie rod connection part, and the fixed handle tie rod connection part is a hollow hole through which the tie rod passes. structure, the stopper is a direction-limiting stopper arranged inside the connection part of the tie rod of the fixed handle, and the channel between the fixed handle and the tie rod passes through the second tie rod connection shaft arranged at the end of the tie rod connection part of the fixed handle connection, the second pull rod connection shaft is a hollow structure through which the pull rod passes, a second groove is provided inside the second pull rod connection shaft, and the pull rod channel is provided with a socket connected to the second pull rod The second tie rod connection sleeve inside the shaft, the end of the second tie rod connection sleeve is provided with a second card platform, and the second tie rod connection sleeve and the second tie rod connection shaft are clamped on the second card platform Fitting connection in the second groove.

Further preferably, the end of the main claw is further provided with a first negative pressure connection shaft connected to the rod negative pressure channel, the first negative pressure connection shaft is a hollow structure communicating with the head negative pressure channel, The end of the fixed handle connected to the negative pressure channel of the rod is provided with a second negative pressure connecting shaft, and the second negative pressure connecting shaft is a hollow structure communicating with the negative pressure channel of the handle; Both ends of the channel are provided with connecting parts with an inner diameter smaller than the inner diameter of the negative pressure channel, and the connecting parts are connected to the first negative pressure connecting shaft and the second negative pressure connecting shaft through negative pressure connecting sleeves, The negative pressure connecting sleeve is a hollow structure. The negative pressure connecting sleeve includes a first connecting piece and a second connecting piece. The first connecting piece includes a hollow sleeve rod and a sleeve connected to one end of the sleeve rod. The rod head, the second connecting piece is a hollow sleeve with a boss inside, the first connecting piece is sleeved in the second connecting piece, and the sleeve head of the first connecting piece is clamped on the The boss of the second connecting piece, the outer surface of the sleeve rod of the first connecting piece has a gap with the inner surface of the second connecting piece, the first negative pressure connecting shaft and the second negative pressure The connecting shaft is inserted into the gap, and the connecting part is inserted into the other end of the second connecting member and abuts against the sleeve head.

Further, the fixed handle is also provided with a negative pressure control valve, and the negative pressure control valve includes a handle control valve channel and a valve component connected to the handle negative pressure channel. The negative pressure control valve can realize the control and preset of the clamping force of the negative pressure nozzle.

Further, the auxiliary claw is provided with a connecting auxiliary end connected with the main claw, and the connecting auxiliary end is provided with two symmetrical inserts separated by a connecting groove of the auxiliary claw, and the inserting pieces are each provided with Auxiliary claw hole; the main claw is provided with a connecting main end connected with the auxiliary claw, and the connecting main end is provided with a connecting groove for accommodating the insert and making the insert have a movable space, and the connecting groove There is a main claw hole; the auxiliary claw is connected to the main claw through a claw connection shaft passing through the main claw hole and the auxiliary claw hole.

Compared with the prior art, the advantages of the present invention are: the technical solution of the present invention realizes the clamping of the tissue by combining mechanical clamping and negative pressure clamping, has controllable clamping force, large tissue force area and is not easy to slip , so that it is not easy to cause damage to the tissue, it is suitable for a variety of soft tissue organs, and the operation is safer and more precise. It can also be used as a flushing tube and suction device when flushing and suction are required, avoiding the replacement of surgical instruments. The surgical forceps of the present invention are compact in structure, easy to operate, and can improve the reliability of the operation. The negative pressure channel is arranged on the handle, which does not cause too much interference during use, and reduces the work difficulty of medical personnel.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is a schematic structural view of the surgical forceps of the present invention.

Fig. 2 is a three-dimensional structural schematic diagram of the main claw of the present invention.

Fig. 3 is a side sectional view of the main claw of the present invention.

Fig. 4 is a schematic diagram of the three-dimensional structure of the auxiliary claw of the present invention.

Fig. 5 is a schematic diagram of the structure of the rod negative pressure channel of the present invention.

Fig. 6 is a schematic diagram of the channel structure of the tie rod in the present invention.

Fig. 7 is a schematic diagram of the structure of the tie rod of the present invention.

Fig. 8 is a schematic diagram of the assembly of the secondary claw and the pull rod of the present invention.

Fig. 9 is a schematic diagram of the assembly of the main claw and the auxiliary claw of the present invention.

Fig. 10 is a schematic diagram of the assembly of the main claw, the pull rod channel and the rod negative pressure channel of the present invention.

Fig. 11 is a partial side sectional view of the assembly of the main claw and the pull rod channel of the present invention.

Fig. 12 is a partial side sectional view of the assembly of the main claw and the rod negative pressure channel of the present invention.

Fig. 13 is a partial side sectional view of the fixed handle of the present invention.

Fig. 14 is a schematic diagram of the three-dimensional structure of the fixed handle of the present invention.

Fig. 15 is a partial side sectional view of the handle of the present invention.

Fig. 16 is a schematic diagram of the three-dimensional structure of the handle of the present invention.

Fig. 17 is a schematic diagram of assembly of the pliers handle and pliers rod of the present invention.

Fig. 18 is a sectional view of the surgical forceps of the present invention.

Wherein 1, surgical forceps, 2, pliers handle, 3, pliers rod, 4, pliers head, 5, fixed handle, 6, moving handle, 7, handle negative pressure channel, 8, negative pressure control valve, 9, connector, 10. Tie rod, 11. Tie rod channel, 12. Rod negative pressure channel, 13. Main claw, 14. Auxiliary claw, 15. Main claw body, 16. Connecting main end, 17. Head rod connection part, 18. Auxiliary claw Body, 19, connecting auxiliary end, 20, main groove, 21, negative pressure nozzle, 22, head negative pressure channel, 23, connecting groove, 24, main claw hole, 25, first tie rod connecting shaft, 26, second A negative pressure connecting shaft, 27, the clamping surface of the main claw, 28, the head rod channel, 29, the first card platform, 31, the auxiliary groove, 32, the through groove, 33, the insertion piece, 34, the auxiliary claw hole, 35 , Auxiliary claw connecting groove, 36, tie rod connecting hole, 37, claw connecting shaft, 38, first connecting piece, 39, second connecting piece, 40, first pulling rod connecting sleeve, 41, connecting part, 42, second pulling rod Connecting sleeve, 44, claw connector, 45, fixed handle connecting part, 46, moving handle connector, 48, first groove, 49, second card platform, 50, tie rod auxiliary claw connection hole, 51, pull rod claw connection Shaft, 52, pull rod limit boss, 53, ball head, 55, fixed handle tie rod connection part, 56, fixed handle connection end, 57, fixed handle handle part, 58, moving handle pull rod connecting head, 59, moving handle connection End, 60, handle handle part, 61, handle control valve channel, 62, valve parts, 63, second pull rod connecting shaft, 64, second negative pressure connecting shaft, 65, limit block, 66, fixed handle connection Hole, 67, push rod with cap, 68, sliding claw cover, 69, sliding claw, 70, indexing drum, 71, negative pressure spool, 72, return spring, 73, second groove, 74, ball head Draw-in slot, 75, moving handle connecting hole, 76, moving fixed handle connecting shaft.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully and in detail below in conjunction with the accompanying drawings and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.

It should be noted that when an element is described as "fixed, affixed, connected or communicated with" another element, it may be directly fixed, affixed, connected or communicated with another element , can also be indirectly fixed, affixed, connected or communicated with another element through other intermediate connectors.

Unless otherwise defined, all technical terms used hereinafter have the same meanings as commonly understood by those skilled in the art. The terminology used herein is only for the purpose of describing specific embodiments, and is not intended to limit the protection scope of the present invention.

Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

Example:

As shown in Fig. 1 and Fig. 18, the present invention provides a surgical forceps with negative pressure suction function. The surgical forceps 1 includes a pliers handle 2, a pliers rod 3 and a pliers head 4, and the pliers handle 2 passes through the pliers rod 3 and the pliers head. 4 connection, the clamp handle 2 includes a fixed handle 5 and a moving handle 6, the moving handle 6 and the fixed handle 5 are rotatably connected, the fixed handle 5 is provided with a connecting head 9 connected to the negative pressure system, and the fixed handle 5 is secretly provided with a connection The handle negative pressure channel 7 communicated with the head 9, the pliers rod 3 is provided with parallel double channels, which are respectively the pull rod channel 11 through which the pull rod 10 passes inside and the rod negative pressure channel 12 communicated with the handle negative pressure channel 7, and the pliers head 4 Including the main claw 13 and the auxiliary claw 14 hinged with the main claw 13, the head negative pressure channel 22 communicated with the rod negative pressure channel 12 is hidden in the main claw 13, and the head negative pressure channel 22 is also opened on the main claw 13 The negative pressure nozzle 21 of the negative pressure nozzle 21, the fixed handle 5, the pincer rod 3 and the main claw 13 are fixed in sequence, and the pull rod 10 is connected with the moving handle 6 and the auxiliary claw 14 respectively, and the moving handle 6 pulls the pull rod 10 to produce a linear motion in the pull rod channel 11 so Control the opening and closing of the auxiliary jaw 14 and the main jaw 13 . The independent design of the rod negative pressure channel 12 and the pull rod channel 11 optimizes the structure of the clamp rod 3, and the rod negative pressure channel 12 and the pull rod channel 11 do not affect each other, and are easy to replace.

As shown in Fig. 2 and Fig. 3, the main claw 13 of the present invention is a thicker sheet structure, and the main claw 13 includes a main claw body 15, a connecting main end 16, a head rod connecting portion 17, a head negative pressure channel 22, The first negative pressure connecting shaft 26, the main claw body 15 is respectively connected to the connecting main end 16 and the head negative pressure channel 22, the head negative pressure channel 22 is located below the connecting main end 16 and communicates with the first negative pressure connecting shaft 26, The head rod connecting part 17 is connected with the connecting main end 16; the main claw body part 15 mainly includes a main groove 20 and a negative pressure nozzle 21, and the negative pressure nozzle 21 is opened on the main claw clamping surface 27 of the main claw 13, and the main groove 20 is a groove structure around the opening of the negative pressure nozzle 21 to prevent tissue slipping, the negative pressure nozzle 21 is a key component for the main claw body 15 to apply negative pressure clamping force, the negative pressure nozzle 21 communicates with the head negative pressure channel 22; The end 16 includes a connecting groove 23 and a main claw hole 24. The main connecting end 16 is mainly used for connecting the auxiliary claw 14; , and the other end is connected to the pull rod channel 11 through the first card platform 29 arranged at the end of the first pull rod connecting shaft 25. The first pull rod connecting shaft 25 is internally provided with a head pull rod channel 28 through which the pull rod 10 passes. The head pull rod channel 28 It communicates with the connecting groove 23 ; the first negative pressure connecting shaft 26 is a hollow structure, and the head negative pressure channel 22 is connected with the rod negative pressure channel 12 through the first negative pressure connecting shaft 26 .

As shown in Figure 4, the auxiliary claw 14 of the present invention is a relatively thin sheet structure, which includes the auxiliary claw body 18 and the connecting auxiliary end 19 connected in sequence, and the auxiliary claw body 18 mainly includes the auxiliary groove 31 and the through groove 32, the through groove 32 is opened on the clamping surface of the auxiliary claw 14, and the auxiliary groove 31 is a groove structure opened on the periphery of the opening of the through groove 32 to prevent the tissue from slipping; the connecting auxiliary end 19 is provided with a connecting groove 35 by the auxiliary claw Two symmetrical inserts 33 are separated. The insert 33 is provided with an auxiliary claw hole 34 connected with the main claw 13 and a tie rod connection hole 36 connected with the pull rod 10. The auxiliary claw hole 34 is closer to the auxiliary claw than the pull rod connection hole 36. Body 18. The shape and thickness of the main claw 13 are slightly larger than that of the auxiliary claw 14 , and the main claw 13 can withstand greater force than the auxiliary claw 14 during operation.

As shown in Figure 8, the claw connector 44 of the pull rod 10 can be inserted into the auxiliary claw connection groove 35 of the auxiliary claw 14. The claw connector 44 is provided with a pull rod auxiliary claw connection hole 50, and the auxiliary claw 14 and the pull rod 10 pass through a pull rod. The auxiliary claw connecting hole 50 is rotatably connected to the pull rod claw connecting shaft 51 of the pull rod connecting hole 36 .

As shown in Figure 9, the insertion piece 33 of the auxiliary claw 14 can be inserted into the connection groove 23 of the main claw 13, the insertion piece 33 has a certain movable space in the connection groove 23, and the auxiliary claw 14 passes through a main claw hole 24 and The claw connection shaft 37 of the auxiliary claw hole 34 is rotationally connected with the main claw 13, the through groove 32 of the auxiliary claw 14 is matched with the negative pressure nozzle 21 of the main claw 13, and the auxiliary groove 31 of the auxiliary claw 14 is connected with the main groove of the main claw 13. The grooves 20 are engaged. The cooperation between the through groove 32 and the negative pressure nozzle 21 makes it possible to produce a better clamping and adsorption effect when facing a specific tissue without damaging the specific tissue. The position of the negative pressure nozzle 21 and the design of the main groove 20 and the auxiliary groove 31 can better absorb the clamped tissue and prevent the clamped tissue from slipping.

As shown in Fig. 5, Fig. 6, Fig. 10, Fig. 11, Fig. 12 and Fig. 17, the tie rod channel 11 is provided with a first tie rod connecting sleeve 40 which is sleeved on the outside of the first tie rod connecting shaft 25, and the first tie rod connecting sleeve 40 A first groove 48 is provided inside, and the first tie rod connecting shaft 25 and the first tie rod connecting sleeve 40 are clamped in the first groove 48 through the first clamping platform 29 for mating connection. The end of the fixed handle 5 connected to the pull rod channel 11 is provided with a second pull rod connecting shaft 63 , the second pull rod connecting shaft 63 is a hollow structure that is convenient for the pull rod 10 to pass through, and a second groove 73 is provided inside the second pull rod connecting shaft 63 , the pull rod channel 11 is provided with a second pull rod connecting sleeve 42 sleeved inside the second pull rod connecting shaft 63, the end of the second pull rod connecting sleeve 42 is provided with a second card platform 49, the second pull rod connecting sleeve 42 and the second pull rod The connecting shaft 63 is clamped in the second groove 73 through the second clamping platform 49 and connected with it. The fixed handle 5 is provided with a fixed handle tie rod connecting portion 55 connected with the second pull rod connecting shaft 63. The fixed handle tie rod connecting portion 55 is a hollow structure for facilitating the passage of the pull rod 10. The fixed handle tie rod connecting portion 55 is also provided with a directional stopper. 65.

The end of the main claw 13 connected to the rod negative pressure channel 12 is provided with a first negative pressure connecting shaft 26, the first negative pressure connecting shaft 26 is a hollow structure communicating with the head negative pressure channel 22, and the fixed handle 5 is connected to the rod negative pressure channel. 12 is connected with a second negative pressure connecting shaft 64, the second negative pressure connecting shaft 64 is a hollow structure communicating with the handle negative pressure passage 7, and both ends of the rod negative pressure passage 12 are provided with inner diameters smaller than the rod negative pressure. The connecting portion 41 of the inner diameter of the pressure channel 12, the connecting portion 41 is connected with the first negative pressure connecting shaft 26 and the second negative pressure connecting shaft 64 through a negative pressure connecting sleeve, the negative pressure connecting sleeve is a hollow structure, and the negative pressure connecting sleeve includes a second negative pressure connecting sleeve. A connecting piece 38 and a second connecting piece 39. The first connecting piece 38 includes a hollow sleeve rod and a sleeve rod head connected to one end of the sleeve rod. The second connecting piece 39 is a hollow sleeve with a boss inside. , the first connecting piece 38 is sleeved in the second connecting piece 39, and the sleeve head of the first connecting piece 38 is clamped on the boss of the second connecting piece 39, and the outer surface of the sleeve rod of the first connecting piece 38 is in contact with the second connecting piece 39. The inner surface of the second connecting piece 39 is provided with a gap, the first negative pressure connecting shaft 26 and the second negative pressure connecting shaft 64 are inserted into the gap, and the connecting part 41 is inserted into the other end of the second connecting piece 39 and connected with the first The sleeve heads of the connectors 38 abut against each other.

As shown in Fig. 7, Fig. 17 and Fig. 18, the pull rod 10 includes a claw connector 44 connected to the auxiliary claw 14, a movable handle connector 46 connected to the movable handle 6, and a movable handle connector 46 connected to the claw connector 44. Between the fixed handle connecting portion 45, the claw joint 44 is provided with a pull rod secondary claw connection hole 50, and the secondary claw 14 is connected to the pull rod 10 through a pull rod claw connection shaft 51 that passes through the pull rod secondary claw connection hole 50 and the pull rod connection hole 36. The claw connector 44 is connected in rotation. The handle connector 46 includes a ball head 53 and a ball handle with a diameter smaller than the ball head 53. The handle 6 includes a handle rod connector 58. The handle rod connector 58 is provided with a ball head 53 Sliding ball head slot 74, when the moving handle 6 rotates relative to the fixed handle 5, the moving handle 6 drives the ball head 53 to slide in the ball head slot 74, so that the pull rod 10 moves linearly in the pull rod channel 11, and the fixed handle connects The portion 45 is provided with a slightly wider pull rod direction limiting boss 52 , the pull rod limit boss 52 is blocked by the direction limiting block 65 so that the linear movement distance of the pull rod 10 in the pull rod channel 11 is limited.

As shown in FIGS. 13-18 , the fixed handle 5 is also provided with a negative pressure control valve 8 . The negative pressure control valve 8 includes a handle control valve channel 61 and a valve component 62 connected to the handle negative pressure channel 7 . The valve part 62 includes a capped push rod 67 , a sliding claw sleeve 68 , a sliding claw 69 , an indexing drum 70 , a negative pressure valve core 71 , and a return spring 72 connected in sequence. The negative pressure in the connection head 9 can be controlled by the negative pressure control valve 8 to control the suction force of the negative pressure nozzle 21 , and the clamping force of the negative pressure nozzle 21 can also be preset. The fixed handle 5 includes a fixed handle handle 57 and a fixed handle connecting end 56 provided with a fixed handle connecting hole 66, and the moving handle 6 also includes a moving handle handle 60 and a moving handle connecting end 59 provided with a moving handle connecting hole 75. The handle 6 is rotatably connected with the fixed handle 5 through a moving and fixed handle connecting shaft 76 which is provided with a moving handle connecting hole 75 and a fixed handle connecting hole 66 .

As shown in FIG. 18 , the handle negative pressure channel 7 , rod negative pressure channel 12 and head negative pressure channel 22 are connected in sequence, and communicate with the connector 9 , negative pressure nozzle 21 , and handle control valve channel 61 . The connecting head 9 is connected to the operating room negative pressure system to provide negative pressure clamping, and other equipment can also be connected to realize the entry and exit of liquid and gas between the body cavity.

The technical solution of the present invention achieves tissue clamping by combining mechanical clamping and negative pressure clamping. It has controllable clamping force, large tissue force area and is not easy to slip, so it is not easy to cause damage to tissues, and is suitable for various soft tissue organs. , the operation is safer and more accurate, and when flushing and suction are required, it can be used as a flushing tube and suction device to avoid the replacement of surgical instruments. The surgical forceps of the present invention are compact in structure, easy to operate, and can improve the reliability of the operation. The negative pressure channel is arranged on the handle, which does not cause too much interference during use, and reduces the work difficulty of medical personnel.

The technical solution of the present invention has been disclosed by the preferred embodiments as above. Those skilled in the art should realize that changes and modifications made without departing from the scope and spirit of the present invention disclosed by the appended claims of the present invention are within the protection scope of the claims of the present invention.

Claims (10)

1. A surgical forceps with negative pressure suction function, comprising a handle (2), a pliers rod (3) and a pliers head (4), the pliers handle (2) is connected to the pliers head (4) through a pliers rod (3) , the pliers head (4) includes a main jaw (13) and an auxiliary jaw (14) hinged with the main jaw (13), and the pincer handle (2) includes a fixed handle (5) and a fixed handle (5) A hinged moving handle (6), characterized in that: the fixed handle (5) is provided with a connector (9) connected to the negative pressure system, and the fixed handle (5) is secretly provided with the The handle negative pressure channel (7) communicated with the connecting head (9), and the rod negative pressure channel (12) communicated with the handle negative pressure channel (7) is provided in the pliers rod (3), and the main claw ( 13) A head negative pressure channel (22) communicating with the rod negative pressure channel (12) is hidden inside, and a negative pressure nozzle communicating with the head negative pressure channel (22) is also provided on the main claw (13) (21), the fixed handle (5), the pincer rod (3) and the main claw (13) are fixed in sequence, and the moving handle (6) is passed through a pincer rod (3) The pull rod (10) in the inner cavity is connected to the auxiliary claw (14), and the pull rod (10) is driven by the moving handle (6) to control the opening and closing of the auxiliary claw (14) and the main claw (13) . 2. The surgical forceps with negative pressure suction function according to claim 1, characterized in that: the negative pressure nozzle (21) is opened on the main jaw clamping surface (27) of the main jaw (13), The periphery of the opening of the negative pressure nozzle (21) is provided with a main groove (20), and the clamping surface of the auxiliary claw (14) opposite to the clamping surface (27) of the main claw is provided with an auxiliary groove (31 ), the main groove (20) and the secondary groove (31) are engaged. 3. The surgical forceps with negative pressure suction function according to claim 2, characterized in that: the clamping surface of the auxiliary jaw (14) opposite to the main jaw clamping surface (27) is also provided with a The through groove (32) matched with the negative pressure nozzle (21). 4. The surgical forceps with negative pressure suction function according to claim 2, characterized in that: the main claw (13) is a thicker sheet structure, and the auxiliary claw (14) is opposite to the main claw (13) Thinner sheet-like structure. 5. The surgical forceps with negative pressure suction function according to any one of claims 1-4, characterized in that: the forceps rod (3) is provided with parallel and mutually independent dual channels, one of which is The rod negative pressure channel (12), and the other is a pull rod channel (11) for accommodating the pull rod (10) to pass through. 6. The surgical forceps with negative pressure suction function according to claim 5, characterized in that: said fixed handle (5) comprises a fixed handle connection end (56) provided with a fixed handle connection hole (66), said The moving handle (6) includes a moving handle connecting end (59) provided with a moving handle connecting hole (75), and the moving handle (6) is connected to the fixed handle by passing through the moving handle connecting hole (75). The movable and fixed handle connecting shaft (76) of the hole (66) is rotationally connected with the described fixed handle (5); The pull rod (10) includes a claw connection head (44), a moving handle connection head (46) and a pull rod connecting portion (45) connected between the claw connection head (44) and the moving handle connection head (46). ), the claw connector (44) is rotationally connected with the secondary claw (14) and makes the secondary claw (14) rotate around the hinge of the secondary claw (14) and the main claw (13) , the moving handle connection head (46) includes a ball head (53) and a ball handle with a cross-sectional diameter smaller than the cross-sectional diameter of the ball head (53), and the moving handle (6) is provided with a The ball joint slot (74) of the head (53), the ball joint (53) slides in the ball joint slot (74) when the moving handle (6) rotates around the fixed handle (5) , the tie rod connecting part (45) is located in the tie rod channel (11), the tie rod connecting part (45) is provided with a tie rod limiting boss (52), and the inside of the tie rod channel (11) is provided with a The pull rod (10) linearly moves in the pull rod channel (11) to block the stopper of the pull rod limiting boss (52). 7. The surgical forceps with negative pressure suction function according to claim 6, characterized in that: the main jaw (13) is provided with a first pull rod connecting shaft (25) connected to the pull rod channel (11), The first pull rod connection shaft (25) includes a first card platform (29) and a head pull rod channel (28) through which the pull rod (10) passes, and the first card platform (29) is arranged on the first card platform (29). The end of a pull rod connection shaft (25), the head pull rod passage (28) is located inside the first pull rod connection shaft (25), the pull rod (10) passes through the head pull rod passage (28) and the The auxiliary claw (14) is connected, and the pull rod channel (11) is provided with a first pull rod connecting sleeve (40) sleeved on the outside of the first pull rod connecting shaft (25), and the first pull rod connecting sleeve (40 ) is provided with a first groove (48) inside, and the first pull rod connecting shaft (25) and the first pull rod connecting sleeve (40) are clamped on the first Matching connection in the groove (48); The fixed handle (5) also includes a fixed handle rod connection part (55), the fixed handle rod connection part (55) is a hollow structure that allows the rod (10) to pass through, and the stopper is arranged on the The limit stopper (65) inside the tie rod connecting part (55) of the fixed handle, the fixed handle (5) and the pull rod channel (11) pass through the end of the tie rod connecting part (55) of the fixed handle The second pull rod connection shaft (63) is connected, and the second pull rod connection shaft (63) is a hollow structure through which the pull rod (10) passes, and the second pull rod connection shaft (63) is provided with a second concave Groove (73), the pull rod channel (11) is provided with a second pull rod connection sleeve (42) sleeved inside the second pull rod connection shaft (63), and the end of the second pull rod connection sleeve (42) A second card platform (49) is provided, and the second tie rod connecting sleeve (42) and the second tie rod connecting shaft (63) are clamped in the second groove through the second card platform (49) Fit connection in (73). 8. The surgical forceps with negative pressure suction function according to claim 5, characterized in that: the end of the main claw (13) is also provided with a first negative pressure connected to the rod negative pressure channel (12). A connecting shaft (26), the first negative pressure connecting shaft (26) is a hollow structure communicating with the head negative pressure channel (22), the fixed handle (5) is connected to the rod negative pressure channel (12) The end of the connection is provided with a second negative pressure connecting shaft (64), and the second negative pressure connecting shaft (64) is a hollow structure communicating with the handle negative pressure channel (7); Both ends of the rod negative pressure channel (12) are provided with a connecting portion (41) with an inner diameter smaller than the inner diameter of the negative pressure channel (12), and the connecting portion (41) is connected to the first negative pressure connecting shaft. (26) and the second negative pressure connecting shaft (64) are connected through a negative pressure connecting sleeve, the negative pressure connecting sleeve is a hollow structure, and the negative pressure connecting sleeve includes a first connecting piece (38) and a second A connecting piece (39), the first connecting piece (38) includes a hollow sleeve rod and a sleeve rod head connected to one end of the sleeve rod, and the second connecting piece (39) is a hollow with a boss inside. sleeve, the first connecting piece (38) is sleeved in the second connecting piece (39), and the sleeve head of the first connecting piece (38) is clamped on the second connecting piece (39), the outer surface of the sleeve rod of the first connector (38) and the inner surface of the second connector (39) are provided with a gap, and the first negative pressure connecting shaft (26) and The second negative pressure connecting shaft (64) is inserted into the gap, and the connecting part (41) is inserted into the other end of the second connecting piece (39) and abuts against the sleeve head . 9. The surgical forceps with negative pressure suction function according to claim 1, characterized in that: the fixed handle (5) is also provided with a negative pressure control valve (8), and the negative pressure control valve (8) includes The handle control valve passage (61) and the valve part (62) connected with the handle negative pressure passage (7). 10. The surgical forceps with negative pressure suction function according to claim 1, characterized in that: said auxiliary jaw (14) is provided with a connecting auxiliary end (19) connected with said main jaw (13), said The connecting auxiliary end (19) is provided with two symmetrical inserts (33) separated by the auxiliary claw connection groove (35), and the inserts (33) are all provided with auxiliary claw holes (34); The claw (13) is provided with a connection main end (16) connected with the auxiliary claw (14), and the connection main end (16) is provided with accommodating the insertion piece (33) and making the insertion piece (33) A connecting groove (23) with a movable space, the connecting groove (23) is provided with a main claw hole (24); the auxiliary claw (14) passes through a hole (24) and the auxiliary claw The claw connecting shaft (37) of the claw hole (34) is connected with the main claw (13) in rotation.