CN113143407A

CN113143407A - Grasping forceps for small-incision intestinal cancer radical operation for teaching

Info

Publication number: CN113143407A
Application number: CN202110180582.6A
Authority: CN
Inventors: 闫飞虎; 卞承玲; 叶小飞; 孙瑜; 陈炳辰; 袁瑞军; 徐晓东; 于恩达
Original assignee: First Affiliated Hospital of Naval Military Medical University of PLA
Current assignee: First Affiliated Hospital of Naval Military Medical University of PLA
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-07-23
Anticipated expiration: 2041-02-08
Also published as: CN113143407B

Abstract

The invention relates to the technical field of medical instruments, in particular to a small incision intestinal cancer radical operation grasping forceps for teaching. The invention has the advantages of solving the non-destructive grasping of intestinal tissues in the small-incision colorectal cancer radical operation, simultaneously clearly observing and recording the state in the operation, simultaneously breaking through two clinical problems by a simple device, and realizing the purposes of convenient and safe clinical operation, convenient and efficient teaching and technical popularization.

Description

Grasping forceps for small-incision intestinal cancer radical operation for teaching

Technical Field

The invention relates to the technical field of medical instruments, in particular to a small incision intestinal cancer radical operation grasping forceps which can be used for teaching.

Background

The incidence and social hazards of colorectal cancer increase year by year, and minimally invasive treatment of colorectal cancer is an important clinical direction. The small incision colorectal cancer radical surgery is taken as a novel minimally invasive surgery mode for colorectal cancer in recent years, has the advantages of minimally invasive surgery, rapid operation, good physiological feedback of operators under direct vision, accelerated rehabilitation, economic cost and the like, and is gradually popularized and applied in the medical practice at the present stage.

The small incision colorectal cancer radical surgery seeks to be smaller and more minimally invasive, the incision length of the abdominal wall is required to be not more than 7cm, and all operation actions in the abdominal cavity and the pelvic cavity need to be finished through the incision. For small incision colorectal cancer radical treatment, the existing open surgery is influenced by the size of the operation instrument, especially the openings of the handles of some instruments are too large, the complicated general surgery major surgery operation is completed only through a narrow single incision under direct vision, the visual field of an operator is easily blocked, the observation operation is influenced, and therefore, a special auxiliary instrument is needed to assist the operator to realize the small incision colorectal cancer radical treatment.

However, the existing small incision colorectal cancer radical operation is not complete in related machinery, and the following two technical problems mainly exist.

The first is that the intestinal tube tissue is difficult to grasp without injury and stretch and expose during operation. At present, no tool special for grasping intestinal canal tissue in small incision colorectal cancer radical surgery exists, and the medical instruments used in common laparotomy are mainly used clinically to reluctantly meet the requirements, however, exposure to deep tissues such as anterior sacral, splenic flexure of the colon, etc., occurs because the length of the forceps arms is insufficient, and because the forceps head and the forceps handle are generally arranged on the same straight line, when the forceps handle is at an angle convenient for grasping, the forceps head is not at an angle and a direction suitable for clamping, the operative field is not well exposed at the moment, the observation operation is influenced, thereby affecting the speed and safety of the operation, in particular to the short length of the common oval grasping forceps and the wide opening of the handle, when in working state, the obstruction at the narrow incision can not only block the sight of the operator, but also can interfere the energy platforms such as an electrotome, an ultrasonic scalpel and the like to enter the abdominal cavity operation plane for operation through the same incision;

secondly, the operation process can not be recorded satisfactorily and can not be presented clearly to doctors other than the operator. Compared with the endoscopic minimally invasive means such as a laparoscope and a davinci, the small incision operation is an improvement on the traditional open surgery, the full-range minimally invasive operation can be realized without an endoscope system and an abdomen, and the operation process cannot be recorded in real time by the endoscope system. In order to apply the complete collection of the operation to clinical summary, academic exchange and teaching demonstration, the traditional methods of a camera, a laparoscopic lens and the like are tried in the past, but the former method cannot overcome the problems that the instruments block the visual field shot through a single incision and the focusing is difficult to operate in the abdominal cavity shot in vitro, and the latter method cannot overcome the high startup cost of the endoscope and the difficulty that the laparoscopic lens, various surgical instruments, an electric knife, an ultrasonic knife and the like enter the abdominal cavity through the same incision and are mutually erected.

The Chinese utility model patent with the application number of 'CN201320147763. X', the authorization notice number of 'CN 203252698U' and the name of 'a small incision surgical grasper' discloses a small incision surgical grasper, which comprises a fixed handle and a movable handle, wherein the fixed handle and the movable handle are fixed through bolt connection, and further comprise a clamping plate, a pull rod groove, a supporting block, a clamping block, a bearing sleeve, a bearing seat, a bearing, a rotator, a flushing hole, a pull rod seat, a forceps rod, a forceps holder, a connecting pin, a connecting plate, a forceps holder fixing pin, a grasping groove, a clamping spring and a clamping tooth, the movable handle is provided with the pull rod groove, the fixed handle and the supporting block are connected into a whole, the lower end of the fixed handle is provided with the clamping tooth, the clamping plate is arranged on the movable handle, one end of the clamping spring is fixed on the movable handle, and the other end of the clamping spring abuts against the clamping plate, and the clamping tooth is matched with the clamping tooth; the rotator is fixed on a bearing seat, the clamp rod penetrates through the rotator and is fixed on the bearing seat, the two bearings are sleeved in the bearing seat, the bearing sleeves are sleeved outside the bearings and the bearing seat and are fixedly clamped with the bearing seat, one end of the clamping block is clamped in the bearing sleeve for fixation, and the other end of the clamping block is fixed on the supporting block; the flushing hole penetrates through the rotator and the bearing seat, and is arranged on the rotator; one end of the pull rod is provided with a pull rod seat, the pull rod seat is sleeved in the pull rod groove to be matched and fixed, and the other end of the pull rod is fixed with the two forceps clamps through the two connecting plates. The use mode of the grasping forceps is as follows: the fixed handle and the fixed handle are tightly held, the pull rod groove pulls the pull rod, the pull rod pulls the two connecting plates, the two connecting plates pull the two forceps holders, and the two forceps holders are closed; the clamping plate and the clamping teeth control the closing angle of the two jaws under the action of the clamping spring, the clamping plate is moved by hand, the fixed handle and the movable handle are released, and the two jaws can be opened. This device is not suitable for small incision colorectal cancer surgery because: 1. the device is mainly suitable for cholecystectomy, the specific size and specification of the device are not clear, and the device can not be theoretically suitable for deep large intestine and intestinal canal tissues; 2. because only the forceps sheet is arranged on the design and the forceps arms are not used for extending the forceps sheet, the opening of the grasping forceps is too small, and the large intestine tissue with large width cannot be occluded exactly; 3. the forceps sheet is designed in a narrow and long shape, and the grasping surface is rough, so that the occluded local pressure is too high, the intestinal tract traction requirement of the intestinal cancer operation is high, the intestinal tract is easily damaged, and the liquid dung leaks to further pollute the abdominal cavity; 4. the device has no video processing function and can not solve the difficulties of small incision operation teaching, technical communication and the like. Therefore, the utility model can not use a device to realize the safe and effective holding and holding of the intestinal canal tissue and the video processing dual functions of the small incision intestinal cancer radical operation, and can not effectively save the operation space, ideally expose the operation field, and implement the video acquisition and processing.

The chinese utility model patent of application number for "CN 201420860113.4", the grant bulletin number for "CN 204484242U", the name is "a novel egg circular pincers of getting myoma" discloses a novel egg circular pincers of getting myoma, and this novel egg circular pincers of getting myoma include: the hydraulic pliers comprise a plier head, a first actuator, a hydraulic arm, a second actuator, a pressure spring, a handle and a hydraulic rod; a first actuator is arranged at the front end of the hydraulic arm, a binding clip is mounted on the first actuator, a second actuator is arranged at the rear end of the hydraulic arm, a hydraulic rod is arranged at the rear end of the second actuator, a pressure spring is arranged between the hydraulic rods, and a handle is arranged at the rear end of the hydraulic rod; a first hydraulic station and a first power arm are arranged in the first actuator, the front end of the first hydraulic station is connected with the first power arm, the first power arm is connected with the binding clip, and the rear end of the first hydraulic station is connected with the hydraulic arm. This oval pincers is under initial condition, and the binding clip passes through the tension of pressure spring and is opened, and during the use, medical staff presses the hydraulic stem through the handle, and the action of second power arm, the oil pressure in the second hydraulic pressure station changes for hydraulic oil in the hydraulic pressure arm changes, thereby drives the first hydraulic pressure station oil pressure change in the first executor, and the oil pressure change in the first hydraulic pressure station makes the action of first power arm, thereby drives the binding clip action, reaches the purpose that struts human tissue. The device adds the hydraulic pressure station structure in the executor for not only make the structure complicated, more probably arouse the safety in utilization problem.

At present, a medical instrument which can grasp intestinal canal tissues flexibly and reliably without damage and simultaneously realize video acquisition, storage and real-time transmission in small-incision colorectal cancer radical operation so as to meet the dual requirements of clinic and teaching is clinically lacked.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, meet the requirements of expanding the range of the operative field as much as possible in the small-incision colorectal cancer radical operation, accurately grasp intestinal tissues, clearly observe the conditions in the operation, and realize the surgical instruments with the purposes of convenient and safe clinical operation, convenient and fast teaching and technical popularization and high efficiency.

In order to achieve the purpose, the invention provides a small incision intestinal cancer radical operation grasping forceps used for teaching, which comprises an operation part, a working part and a video processing device.

The operation part includes sheath pipe, rotating ring, locating lever and establishes a pair of pincers handle at this sheath pipe tail end, wherein:

the rotating ring is arranged at the head end of the outer sheath tube, the rotating ring movably rotates along the circumferential direction of the outer sheath tube, the positioning rod is arranged on the rotating ring, the axial lead of the positioning rod is vertical to the axial lead of the outer sheath tube, and an operation opening is formed on the surface of the tail part of the outer sheath tube;

limiting rods facing to the tail ends are respectively arranged on the pair of forceps handles, an extension rod is accommodated at the tail end inside the outer sheath tube, and the tail end of the extension rod is in shaft connection with the tail ends of the two limiting rods through positioning pins;

the working part comprises a clamp mouth, a clamp arm and a push-pull rod which are fixedly connected in sequence, the clamp arm is of a shear type structure, a first connecting shaft at the head end side of the clamp arm is sleeved on the positioning rod, the tail end of the push-pull rod is rotatably connected with the head end of the extension rod, and the axis of the push-pull rod and the axis of the extension rod are positioned on the same straight line;

the video processing device is mounted on the sheath tube.

The operation forceps are divided into a working part exposed outside the body and an operation part extending into the body, the forceps handle of the working part outside the body crosses over the abdominal wall incision to drive the forceps mouth of the operation part in the body, operation actions such as poking, picking and drawing can be easily realized in an operation, the situation that the hand of an operator stretches into the abdominal cavity to shield the incision to interfere the visual field of the operator is avoided, and the purposes of external operation under a small incision and minimal invasive intestinal cancer radical operation are realized.

The center O of the rotating ring is coincided with the midpoint of the positioning rod.

The push-pull rod is provided with an exposed surface exposed out of the operating opening of the outer sheath tube, so that the exposed surface of the push-pull rod can be rotated and shifted through the operating opening, and the rotation of the push-pull rod is realized. The clamp arm can flexibly rotate in a self-rotating mode by 360 degrees, so that the clamp mouth is driven to rotate freely, and the occlusion angle can be adjusted conveniently.

The opening and closing of the forceps mouth and the forceps handle are synchronous, the opening and closing of the forceps mouth are realized by the conduction of the forceps handle which sequentially drives the extension rod and the push-pull rod, and the operation and the adjustment of the occlusion angle are convenient for a user. In the process of opening the forceps handle to closing, the included angle of the two limiting rods is gradually reduced and drives the positioning pin to move towards the tail end side, the positioning pin simultaneously drives the extension rod and the push-pull rod to move towards the tail end side, and the shear type structure of the forceps arm is transversely elongated and longitudinally contracted, so that the distance between forceps mouths arranged on the head end side of the forceps arm is also gradually reduced, and the purpose of occlusion is achieved. The device has simple structure, can be flexibly combined and separated, and is convenient for cleaning and disinfection of the device or disassembly and replacement of easily-worn parts.

The video processing device is convenient for realizing the functions of real-time acquisition, storage and transmission of the conditions and the videos in the observation operation.

Preferably, the video processing device comprises a camera module, a two-dimensional code of the video processing device, a battery module, a storage module, a signal card, a manual switch module, an electric quantity indicator lamp, a USB interface module and a working state indicator lamp module.

The video processing device is provided with two opening and closing modes, wherein the first mode is to open and close through a manual switch module, the second mode is to scan a two-dimensional code of the video processing device through equipment such as a mobile phone and the like, a control switch is selected in a corresponding user interface, an electric quantity indicator lamp is turned ON when in an opening state, is turned OFF when in a closing state, and is turned OFF after being flickered for 3 seconds.

The camera module starts to collect videos and stores the videos to the storage module and the signal card, and meanwhile, AP hot spots of the device can synchronously store the videos in the cloud network disk.

The terminal equipment such as the mobile phone and the like can realize that the video is transmitted to the terminal for live broadcast watching by the video processing device by applying a 5G signal through identifying or directly scanning the two-dimensional code of the video processing device.

The methods for obtaining the video resources to the local terminal for post-editing processing include the following steps: 1. cloud downloading; 2. reading the M-SD by the card reader; 3. the USB interface is connected with terminals such as a computer.

The electric quantity allowance condition of the video processing device is displayed by the electric quantity indicating lamp in real time when the device is in a working state, a battery of the video processing device can be replaced or the video processing device can be charged through the USB interface after the electric quantity is exhausted, and a wireless charging technology can be used after the technology is mature in future.

The video processing device realizes flexible disassembly and assembly through a fixing frame arranged on the outer sheath tube.

In a limited in-vivo working surface, the video processing device can acquire, transmit and store the operation process in real time, so that a superior doctor can conveniently perform synchronous observation and real-time guidance, and the development of subsequent work such as summary, teaching and technical popularization is facilitated. In the small-incision colorectal cancer minimally invasive surgery, two aims of smoothly performing auxiliary surgery operation and recording the whole course of the operation process are simultaneously realized by one instrument, and the instrument has excellent practical significance for surgical teaching, technical popularization and communication and the like.

Preferably, the forceps mouth is of an arc-shaped oval ring-shaped structure.

Preferably, the long diameter of the outer ring of the plier mouth is 1.5-2.5 cm, the short diameter of the outer ring of the plier mouth is 1-2 cm, the long diameter of the inner ring of the outer ring of the plier mouth is 1-2 cm, and the short diameter of the inner ring of the outer ring of the plier mouth is 0.5-1.5 cm;

the length of the clamp arm is 3-6 cm, and the maximum opening angle is 135 degrees;

the length of the surgical forceps is 33-37 cm.

The length of the surgical forceps is the length of the surgical forceps when the forceps arms are folded in a scissor-type structure.

The forceps mouth is made of metal materials with good strength and toughness, the relative position and the opening angle of the forceps mouth in the operation can be flexibly adjusted, and the forceps mouth is matched with the arc oval ring-shaped appearance structure of the forceps mouth, so that colorectal tissues and intestinal tracts can be smoothly occluded and grasped.

The forceps mouth is made of metal materials with good strength and toughness, and the occlusal surface is smooth and toothless, so that the occlusal force is ensured, and the intestinal canal can be prevented from being damaged.

Preferably, the clamp handle is provided with a locking structure.

The locking structure is the cockscomb structure design, and when the locking structure carried out the locking, the pincers mouth also was in the locking state, easily interlock intestines tube tissue, avoided art person's hand to last the isotonic atress and cause fatigue.

Preferably, the number of the forceps arms is 2-4, and each forceps arm is provided with the forceps mouth.

Preferably, the limiting rods arranged on the pair of forceps handles are compression springs, and the tail ends of the extension rods are connected to a connection point between the two compression springs.

The pressure spring is a rigid material which can bear repeated deformation and has good elastic retractive force.

Preferably, the inner part of the outer sheath tube at the operation opening and the push-pull rod are provided with coupling structures matched with each other.

The relative position of the coupling structure in the outer sheath tube and the coupling structure on the push-pull rod is adjusted through the opening and closing of the forceps handle. When the coupling structure in the outer sheath tube and the coupling structure on the push-pull rod are in corresponding positions, the push-pull rod is in a rotatable state, and when the coupling structure in the outer sheath tube and the coupling structure on the push-pull rod are in staggered positions, the push-pull rod is in a locked state. Generally, the forceps handle is in a rotatable state corresponding to the push-pull rod when in an open state, and is in a locked state corresponding to the push-pull rod when in an occluded state.

Preferably, the outer rotating ring is disposed inside at the head end of the outer sheath tube.

Preferably, the video processing device is mounted on an outer wall of the sheath tube.

Before the device is used, the forceps handle is in a half-occlusion shape, the device is placed into the body of an operator through a small incision, after the forceps mouth is close to the pre-grasping part, the position relation between the grasped intestinal canal part and the forceps mouth is judged firstly, and then the grasping is carried out, and at the moment, the following two conditions can be roughly divided into:

1. the forceps mouth and the grasped tissue are at an angle suitable for occlusion, the forceps mouth does not need to be rotated at the moment, the opening angle of the forceps mouth is adjusted according to the shape of the grasped intestinal canal on the premise of keeping the direction of the forceps handle, and the larger the opening degree of the forceps handle is, the larger the opening degree of the forceps mouth is. When the opening degree of the clamp mouth is slightly larger than the size of the intestinal canal to be grasped, the clamp handle is closed until the clamp mouth is lightly lapped on the intestinal canal, and the action of pre-occluding the intestinal canal is completed. At the moment, the clamp handle is further gripped, the clamp mouth further bites the intestinal canal, and the biting purpose is finished;

2. for the forceps mouth and the grasped tissue to be at an angle which is not suitable for occlusion, the forceps mouth needs to be firstly shifted to the angle which is suitable for occlusion. Because the forceps handle is in a half-occlusion state, the angle of the forceps mouth is rotated by pulling the push-pull rod, and when an operator observes that the forceps mouth and the grasped tissue are in a proper occlusion angle, the occlusion purpose can be realized by performing the step under the first condition.

The invention has the advantages of solving the non-destructive grasping of intestinal tissues in the small-incision colorectal cancer radical operation, simultaneously clearly observing and recording the state in the operation, simultaneously breaking through two clinical problems by a simple device, and realizing the purposes of convenient and safe clinical operation, convenient and efficient teaching and technical popularization.

The device has clinical and teaching functions and can replace the traditional oval forceps, on one hand, the whole length of the device is 10cm longer than that of the traditional oval forceps, the volume of a forceps lever arm cannot be changed in the using process, and the problems that the opening is large in the using process of the traditional scissor type oval grasping forceps, the operation visual field is blocked, and the use of other instruments is interfered are overcome; on the other hand, the device can flexibly superpose the video processing device, can acquire, transmit and store the operation process in real time, is favorable for developing the subsequent work of summarizing experience, teaching practice, technical popularization and the like, and is particularly suitable for clinical and teaching application of small-incision colorectal cancer surgery.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an operation part in the present invention;

FIG. 3 is a schematic view of the structure of the rotating ring and the positioning rod of the present invention;

FIG. 4 is a schematic structural view of a working part in the present invention;

FIG. 5 is a schematic view of the working portion of FIG. 1 rotated 90;

fig. 6 is a schematic view of the present invention in an occluded state.

Wherein:

1-operation part 11-outer sheath tube 12-forceps handle

13-rotating ring 14-positioning rod 15-limiting rod

16-extension rod 17-positioning pin 18-operation opening

19-locking structure 2-working part 21-forceps mouth

22-clamp arm 23-push-pull rod 3-video processing device

Detailed Description

The invention is further described below with reference to the following figures and specific examples.

As shown in FIGS. 1, 2, 4 and 5, the left side is the head end, the right side is the tail end, the lower side of the view of FIG. 6 is the head end, and the upper side is the tail end.

Example 1:

the small incision intestinal cancer radical operation grasping forceps which can be used for teaching as shown in figures 1 to 6 comprises an operation part 1, a working part 2 and a video processing device 3,

the operation part 1 comprises an outer sheath tube 11, a rotating ring 13, a positioning rod 14 and a pair of forceps handles 12 arranged at the tail end of the outer sheath tube 11, wherein:

the rotating ring 13 is provided at the inside of the head end of the sheath tube 11,

the rotating ring 13 rotates along the circumference of the outer sheath tube 11, the positioning rod 14 is mounted on the rotating ring 13, the axis of the positioning rod 14 is perpendicular to the axis of the outer sheath tube 11, and the tail surface of the outer sheath tube 11 forms an operation opening 18;

the pair of forceps handles 12 are respectively provided with a limiting rod 15 facing to the tail end, the tail end of the inner part of the outer sheath tube 11 is provided with an extension rod 16, and the tail end of the extension rod 16 is connected with the tail ends of the two limiting rods 15 through a positioning pin 17;

the working part 2 comprises a clamp mouth 21, a clamp arm 22 and a push-pull rod 23 which are fixedly connected in sequence, the clamp arm 22 is of a scissor structure, a first connecting shaft at the end of the head end of the clamp arm 22 is sleeved on the positioning rod 14, the tail end of the push-pull rod 23 is rotatably connected with the head end of the extension rod 16, and the axial lead of the push-pull rod 23 and the axial lead of the extension rod 16 are positioned on the same straight line;

the video processing apparatus 3 is mounted on the sheath tube 11.

The operation forceps are divided into a working part exposed outside the body and an operation part extending into the body, the forceps handle 12 of the working part outside the body crosses over the abdominal wall incision to drive the forceps mouth of the operation part in the body, operation actions such as poking, picking and drawing can be easily realized in an operation, the situation that the hand of an operator stretches into the abdominal cavity to shield the incision to interfere the visual field of the operator is avoided, and the purposes of external operation under a small incision and minimal invasion to complete intestinal cancer radical operation are realized.

The centre O of the rotating ring 13 coincides with the middle point of the positioning rod 14.

The push-pull rod 23 has an exposed surface exposed out of the operation opening 18 of the sheath tube 11, so that the exposed surface of the push-pull rod 23 can be rotated and shifted through the operation opening 18, and the rotation of the push-pull rod 23 is realized. The clamp arm 22 can flexibly rotate in a self-rotation manner by 360 degrees, so that the clamp mouth 21 is driven to rotate freely, and the occlusion angle can be adjusted conveniently.

The opening and closing of the forceps mouth and the forceps handle are synchronous, the opening and closing of the forceps mouth 21 are realized by the conduction after the forceps handle 12 sequentially drives the extension rod 16 and the push-pull rod 23, and the operation and the adjustment of the occlusion angle are convenient for a user. In the process of opening and closing the forceps handle, the included angle between the two limiting rods 15 is gradually reduced and drives the positioning pin 17 to move towards the tail end side, the positioning pin 17 simultaneously drives the extension rod 16 and the push-pull rod 23 to move towards the tail end side, the shear type structure of the forceps arm is transversely elongated and longitudinally contracted, and therefore the distance between forceps mouths 21 arranged on the head end side of the forceps arm is also gradually reduced, and the purpose of occlusion is achieved. The device has simple structure, can be flexibly combined and separated, and is convenient for cleaning and disinfection of the device or disassembly and replacement of easily-worn parts.

The video processing device 3 comprises a camera module, a two-dimensional code of the video processing device, a battery module, a storage module, a signal card, a manual switch module, an electric quantity indicator lamp, a USB interface module and a working state indicator lamp module.

The forceps mouth 21 is of an arc oval ring-shaped structure.

The forceps mouth is made of metal materials with good strength and toughness, the relative position and the opening angle of the forceps mouth in the operation can be flexibly adjusted, and the forceps mouth is matched with the arc oval ring-shaped appearance structure of the forceps mouth so as to smoothly bite and grasp colorectal tissues and intestinal tracts.

The long diameter of the outer ring of the forceps mouth 21 is 2cm, the short diameter is 1.5cm, the long diameter of the inner ring is 1.5cm, and the short diameter is 1 cm;

the length of the clamp arm 22 is 4.5cm, and the maximum opening angle is 135 degrees;

the length of the forceps is 35 cm.

The forceps mouth 21 is made of metal material with good strength and toughness, and the occlusal surface is smooth and toothless, so that the occlusal force is ensured, and the intestinal canal can be prevented from being damaged.

The clamp handle 12 is provided with a locking structure 19.

Locking structure 19 is the cockscomb structure design, and when locking structure 19 carried out the locking, the pincers mouth also was in the locking state, easily interlock intestines tube tissue, avoids art person's hand to last the isotonic atress and cause fatigue.

The number of the forceps arms 12 is 2.

The limiting rods 15 arranged on the pair of forceps handles 12 are compression springs, and the tail end of the extension rod 16 is connected to a connection point between the two compression springs.

The inner part of the outer sheath tube 11 is provided with a coupling structure at the operating opening 18 and the push-pull rod 23.

The relative positions of the coupling structure in the outer sheath tube 11 and the coupling structure on the push-pull rod 23 are adjusted by opening and closing the forceps handle 12. When the coupling structure in the sheath tube 11 and the coupling structure on the push-pull rod 23 are at corresponding positions, the push-pull rod 23 is in a rotatable state, and when the coupling structure in the sheath tube 11 and the coupling structure on the push-pull rod 23 are at staggered positions, the push-pull rod 23 is in a locked state. Generally, when the forceps handle 12 is in an open state, the corresponding push-pull rod 23 is in a rotatable state, and when the forceps handle 12 is in an occluded state, the corresponding push-pull rod 23 is in a locked state.

The video processing apparatus 3 is mounted on the outer wall of the outer sheath tube 11.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions, all of which are within the scope of the invention as defined by the appended claims.

Claims

1. A small incision intestinal cancer radical operation grasping forceps used for teaching comprises an operation part (1), a working part (2) and a video processing device (3), and is characterized in that,

the operation part (1) comprises an outer sheath tube (11), a rotating ring (13), a positioning rod (14) and a pair of forceps handles (12) arranged at the tail end of the outer sheath tube (11), wherein:

the rotating ring (13) is arranged at the head end of the outer sheath tube (11), the rotating ring (13) movably rotates along the circumferential direction of the outer sheath tube (11), the positioning rod (14) is arranged on the rotating ring (13), the axial lead of the positioning rod (14) is vertical to the axial lead of the outer sheath tube (11), and an operation opening (18) is formed on the surface of the tail part of the outer sheath tube (11);

limiting rods (15) facing the tail ends are respectively arranged on the pair of forceps handles (12), an extension rod (16) is accommodated at the tail end inside the outer sheath tube (11), and the tail end of the extension rod (16) is in shaft connection with the tail ends of the two limiting rods (15) through a positioning pin (17);

the working part (2) comprises a clamp nozzle (21), a clamp arm (22) and a push-pull rod (23) which are fixedly connected in sequence, the clamp arm (22) is of a scissor structure, a first connecting shaft on the end side of the head of the clamp arm (22) is sleeved on the positioning rod (14), the tail end of the push-pull rod (23) is rotatably connected with the head end of the extension rod (16), and the axis of the push-pull rod (23) and the axis of the extension rod (16) are positioned on the same straight line;

the video processing device (3) is arranged on the sheath tube (11).

2. The small incision intestinal cancer radical surgery grasper used for teaching as claimed in claim 1, wherein the video processing device (3) comprises a camera module, a video processing device two-dimensional code, a battery module, a storage module, a signal card, a manual switch module, an electric quantity indicator light, a USB interface module, and an operating state indicator light module.

3. The grasper for small incision intestinal cancer radical surgery used for teaching of claim 1, wherein the forceps mouth (21) is of an arc-shaped oval ring-shaped structure.

4. The grasping forceps for small incision intestinal cancer radical operation used for teaching of claim 3, characterized in that the long diameter of the outer ring of the forceps mouth (21) is 1.5-2.5 cm, the short diameter is 1-2 cm, the long diameter of the inner ring is 1-2 cm, and the short diameter is 0.5-1.5 cm;

the length of the clamp arm (22) is 3-6 cm, and the maximum opening angle is 135 degrees;

the length of the surgical forceps is 33-37 cm.

5. The grasper for small incision intestinal cancer radical surgery used in teaching of claim 1, wherein the grasper handle (12) is provided with a locking structure (19).

6. The grasping forceps for the small incision intestinal cancer radical surgery used for teaching of claim 1, characterized in that the number of the forceps arms (12) is 2-4, and each forceps arm (12) is provided with the forceps mouth (21).

7. The grasper for small incision intestinal cancer radical surgery used in teaching of claim 1, wherein the position-limiting rods (15) disposed on the pair of forceps handles (12) are compression springs, and the tail end of the extension rod (16) is connected to the connection point between the two compression springs.

8. The forceps for small incision intestinal cancer radical surgery used for teaching of claim 1, characterized in that the sheath tube (11) is provided with a coupling structure inside at its operation opening (18) and on the push-pull rod (23).

9. The forceps for small incision intestinal cancer radical surgery used for teaching of claim 1, characterized in that the outer rotating ring (13) is arranged inside at the head end of the sheath tube (11).

10. The grasper for small incision intestinal cancer radical surgery used in teaching as claimed in claim 1, wherein said video processing device (3) is installed on the outer wall of the sheath tube (11).