73 results about "Dissection forceps" patented technology

The invention belongs to the technical field of medical equipment, and particularly relates to pneumology department foreign matter forceps which comprise forceps handles, the upper ends of the forceps handles are fixedly connected with connecting blocks, forceps clips are rotationally arranged on the two sides of the upper end of a sleeve, and traction type rotating mechanisms used for adjusting the angle of foreign matter are further arranged on the forceps clips. The traction type rotating mechanism comprises a rotating block rotationally arranged on one side of the upper end of the forceps holder, and an anti-skid pad is arranged on one side of the rotating block; by means of the traction type rotating mechanism, when the foreign matter is a long-strip sharp foreign matter such as a fishbone and a pin, the foreign matter is clamped between the two rotating blocks, the rotating blocks are driven to rotate so that the foreign matter can rotate, when the foreign matter rotates, the two sharp ends of the foreign matter can be away from the inner wall of the respiratory tract till the foreign matter is parallel to the sleeve, and at the moment, the foreign matter is taken out; therefore, the condition that a patient feels uncomfortable due to the fact that the respiratory mucosa is punctured by the foreign matter in the taking-out process due to scraping between the foreign matter and the respiratory tract can be avoided.

The utility model provides simple and convenient forceps type vessel forceps which comprise a first forceps rod and a second forceps rod. The elastic sheet is mounted between the first forceps rod and the second forceps rod; the lock catch mechanism comprises a lock block mounted on the first forceps rod and a lock body mounted on the second forceps rod; after the locking block is inserted into the lock body, the locking block is locked through the lock body; and the pressing unlocking part can be used for unlocking the locking block, and the pressing unlocking part is mounted on the second forceps rod. By arranging the lock catch mechanism, the elastic piece and the pressing unlocking part, after the vessel forceps are clamped and closed, locking is achieved, the vessel forceps are used for automatically keeping the clamping and closing state of the vessel forceps, meanwhile, in the clamping and closing process, the first forceps rod and the second forceps rod compress the elastic piece to generate reset force, and in the vessel forceps opening process, unlocking can be achieved only through pressing operation of the pressing unlocking part; and then the vessel forceps are automatically opened through the elasticity of the elastic sheet.

The invention belongs to the technical field of medical instruments, and discloses a multi-degree-of-freedom surgical robot end effector which comprises a wrist mechanism, and the wrist mechanism comprises a first connecting piece, a second connecting piece, a first forceps holder, a second forceps holder, a first pin shaft, a second pin shaft, a first driving rope, a second driving rope and a third driving rope; the first forceps holder and the second forceps holder are rotationally connected with the first end of the first connecting piece through a first pin shaft respectively; the second end of the first connecting piece is rotationally connected with the second connecting piece through a second pin shaft; the second pin shaft is perpendicular to the first pin shaft; the far end of the first driving rope is fixed on the first forceps holder and drives the first forceps holder to rotate around the first pin shaft; the far end of the second driving rope is fixed on the second forceps holder and drives the second forceps holder to rotate around the first pin shaft; the far end of the third driving rope is fixed to the second end of the first connecting piece and drives the first connecting piece to rotate around the second pin shaft. Coupling between two degrees of freedom can be avoided, and the motion precision of the end effector is improved.

The utility model discloses a clamping device of endoscope thread knot forceps, and relates to the technical field of endoscope equipment. The device specifically comprises a pressure reduction tube and a clamping component, and the pressure reduction tube comprises at least one probe bead; the clamping component is arranged outside the pressure reducing pipe and comprises a binding ring and an extending part, and the binding ring is arranged on the outer wall of the pressure reducing pipe; one end of the extension part is connected with the binding ring, the other end extends towards one side far away from the binding ring, and the free end of the extension part is used for clamping and pulling and drives the decompression pipe to move through the binding ring. The clamping component adopts a binding ring and an extension part which are mounted on the outer wall of the decompression tube, and the extension part extends out of the binding ring, can provide an acting point for the forceps holder and is separated from the decompression tube, so that the outer wall of the decompression tube is prevented from being damaged after the forceps holder is clamped, the decompression tube is prevented from being broken due to clamping, a metal ball falls into the body of a patient, and the treatment risk of the patient is increased.

The utility model discloses a manipulator seedling clamp which comprises a mechanical arm, a clamping mechanism is fixedly connected to the executing end of the mechanical arm, the clamping mechanism comprises a shell, a plurality of strip-shaped openings are formed in one side of the shell at equal intervals, fixing clamps are fixed to the side, close to each strip-shaped opening, of the outer side wall of the shell, and the fixing clamps are fixed to the side, close to each strip-shaped opening, of the shell. A sliding rod penetrates through and is slidably connected to the interior of each strip-shaped opening, a moving assembly is fixedly connected to the end, located outside the shell, of each sliding rod, each moving assembly comprises a moving clamp fixedly connected with the corresponding sliding rod, and a first groove is formed in the side, close to the corresponding fixed clamp, of each moving clamp. According to the seedling clamp, the mechanical arm and the clamping mechanism are arranged, the clamping mechanism comprises the shell, the multiple fixed clamps and the multiple movable clamps are arranged on one side of the shell, when the seedling clamp is used, the multiple movable clamps are driven by the servo motor to move at the same time and matched with the multiple fixed clamps to clamp multiple seedlings at the same time, and therefore the seedling clamping efficiency of the seedling clamp is improved; and the overall working efficiency of the seedling planting machine is improved.

The gastrointestinal foreign body taking-out device comprises a flexible hose, a foreign body forceps assembly and a control assembly, the foreign body forceps assembly is arranged on the flexible hose, the control assembly is arranged at the top of the flexible hose, and the control assembly is connected with the foreign body forceps assembly. The invention belongs to the technical field of medical instruments. The flexible pipe bending end of the flexible pipe is controlled to bend through the bending adjusting assembly of the control assembly, a doctor can conveniently observe the situation in the intestines and stomach of a patient, the doctor can place the palm on a hand placement platform during an operation, hand fatigue is reduced, and the operation efficiency is improved by controlling a control ring of the control assembly through fingers. The control ring is moved up and down to control the foreign matter clamp on the two sides to move up and down, when the control ring is rotated by fingers, the clamp is controlled to be opened and closed to clamp foreign matter in the body of a patient, and for the foreign matter with the smooth surface, the lower pressing plate is pressed to control the net bag foreign matter rod to move, and the foreign matter with the smooth surface in the body of the patient is fished up.

The invention belongs to the technical field of medical instruments, and particularly relates to a thoracic cavity supporting device for operation, which comprises a cylinder body, and the inner wall of the cylinder body is fixedly connected with an isolating membrane; the expansion mechanism is arranged in the cylinder body, the expansion mechanism comprises two expansion plates which are slidably installed on the two sides of the interior of the cylinder body respectively, and the bottoms of the expansion plates are fixedly connected with air bags; and the clamping mechanism comprises a clamping assembly rotationally connected to the outer wall of the cylinder body, and a lifting ring is arranged below the clamping assembly. The isolation membrane can be driven to contract and expand through the expansion plate of the expansion mechanism, the isolation membrane can conveniently penetrate through a surgical incision, the supporting convenience is improved, surgical instruments such as surgical forceps can be clamped through the clamping assembly of the clamping mechanism, after the air bag is inflated and expanded, the surgical incision can be conveniently supported and expanded, and the operation efficiency is improved. And surgical instruments can be conveniently supported and fixed.

The invention relates to the technical field of laparoscopic surgical forceps, in particular to laparoscopic minimally invasive surgery tension measuring forceps and system.The laparoscopic minimally invasive surgery tension measuring forceps are characterized in that a traction rod is arranged in a sleeve, the rear end of the sleeve is connected with an operation part, the operation part comprises a fixed handle and a movable handle, and the top end of the movable handle extends into a sleeve structure to be matched with an open groove in the rear end of the traction rod; the top end of the movable handle can drive the traction rod to reciprocate in the sleeve, so that the forceps holder assembly at the front end of the sleeve is clamped and loosened; three groups of detection pieces are integrated on the traction rod and are respectively a tension pressure sensor, a tilt angle sensor and an electronic compass, data lines of the detection pieces extend to the outside of the tension measuring pliers from the rear end of the sleeve, detection data of the three groups of detection pieces are obtained and are converted into rectangular coordinates through spherical coordinates, and then the measured tension is obtained through a Rodrigues rotation formula; the sensor is integrated on the traction rod of the tension measuring forceps for the laparoscopic minimally invasive surgery, and the tension can be directly measured after calculation by acquiring a plurality of groups of data measured by the sensor.

This invention provides a magnetic grabbing forceps, which includes a magnetic ureteral stent and magnetic grabbing forceps. The magnetic grabbing forceps include a forceps body extending distally, a transmission mechanism connected to the forceps body, and a forceps head structure connected to the transmission mechanism. The forceps body drives the left and right clamps to switch between a closed and an open state through the transmission mechanism. The forceps head structure includes a forceps head base, a left and a right clamp rotatably connected to the forceps head base, and a second magnetic component connected to the forceps head base. After the jaws switch from a closed to an open state, the second magnetic component, under the rebound force of the elastic component, causes the second magnetic component to retract into the jaws.

The application belongs to medical equipment and discloses an endoscope under-fixing kit. The endoscope under-fixing kit is used for single insertion of an endoscope forceps into a body to perform at least two continuous clamping operations. The endoscope under-fixing kit comprises at least two connected closing clamps. The outermost closing clamp has a structure for limiting the endoscope forceps. When the innermost closing clamp is clamped and locked by the endoscope forceps, the adjacent closing clamps are kept in contact with the outer closing clamps due to the outward expansion internal force. The endoscope under-fixing kit is designed with two or more connected closing clamps. The existing endoscope forceps structure is used. The outermost closing clamp is limited by the endoscope forceps. The endoscope forceps are operated to clamp and fix one by one. Therefore, continuous multi-point release is performed after single installation. The endoscope forceps do not need to be taken out for installation. The operation efficiency is improved.

A forceps holding device according to exemplary embodiments of the present invention comprises: a forceps mounting unit in which at least a portion of forceps is inserted and mounted; and a storage space connected to the forceps mounting unit and accommodating contaminants therein. The forceps mounting unit includes a first tunnel extending from the storage space and a second tunnel extending from the first tunnel, and the second tunnel may be inclined at a predetermined angle with respect to the first tunnel.

The pair of spoon-shaped forceps comprises a working section, a connecting pipe, a driving section and an electrocoagulator, the working section and the driving section are connected through the connecting pipe, the working section comprises a fixed sleeve and a movable forceps clip, the fixed sleeve is hinged to the movable forceps clip, a fixed forceps clip is arranged on the side face of the fixed sleeve, and the movable forceps clip can abut against or be far away from the fixed forceps clip. The driving section comprises a fixed arm and a movable arm, the fixed arm and the movable arm are hinged through a first hinge part, the movable arm is connected with the movable forceps clip through a connecting rod, the movable arm can pull the connecting rod to move so that the movable forceps clip can abut against the fixed forceps clip, the electrocoagulator comprises an electrode tip, and the electrode tip is located in the movable forceps clip. The electrode tip is arranged at the movable forceps head, so that the electrocoagulation and electroresection functions can be realized, and the surgical operation is facilitated.

The present invention discloses a bipolar electrocoagulation dissection surgical forceps hook, which comprises a handle and a multifunctional forceps head arranged at the front end of the handle. The multifunctional forceps head comprises a first forceps head and a second forceps head. A semi-through mounting groove is formed in the second forceps head in the direction from the head to the tail. A temperature probe is arranged in the semi-through mounting groove. A wire is connected to the temperature probe. The temperature probe is arranged in the semi-through mounting groove, and the wire extends outside the second forceps head. The semi-through mounting groove is also filled with heat-conducting glue. A temperature display screen is arranged on the handle. The tails of the first forceps head and the second forceps head are both hook-shaped. The heat-conducting glue transmits heat to the temperature probe better. The temperature probe detects the temperature of the tissue or blood vessel to be operated between the surgical forceps, and then the temperature is displayed on the temperature display screen to ensure that the temperature is kept within a certain range during the whole surgical process, and avoid the phenomenon of scorching of human tissues caused by too high temperature.

The utility model belongs to the technical field of medical instruments, and particularly relates to a clip applier head mechanism with a clip arranging function and a continuous clip applier applying the clip applier head mechanism. The utility model provides a clip applier head mechanism with a clip arranging function, aiming at the problem that in the prior art, a clip applier fails to hold a clip and a waste clip is not easy to take out, the clip applier head mechanism with the clip arranging function comprises a clip, a clip closing mechanism, a clip pushing rod and a clip head fixing sleeve, and the clip closing mechanism and the clip head fixing sleeve jointly fix the clip; the clamp head fixing sleeve is provided with a clamp conveying face with the gravity center inclining towards the clamp pushing rod, one side of the clamp pushing rod is tightly attached to the clamp conveying face and used for conveying clamps, the clamp head fixing sleeve is further provided with a clamp outlet used for discharging the titanium clamps out of the clamp head mechanism, the clamp outlet penetrates through the side wall of the clamp head fixing sleeve, and the end, away from the clamp, of the clamp conveying face is communicated with the clamp outlet. When the clamp fails to clamp the clamp, the waste clamp can slide out of the clamp outlet along the clamp feeding surface. The utility model further provides an integral scheme of the running clip applier applying the clip head mechanism.

The invention relates to the technical field of medical instruments, and discloses colposcope biopsy forceps capable of synchronously sampling at multiple points, the inner wall of a forceps tube is fixedly connected with three adjustable biopsy forceps components, the inner wall of a handle sleeve is fixedly connected with a synchronous opening and closing driving component, and three movable forceps clips are driven by a telescopic bracket to respectively approach to corresponding fixed forceps clips, so that the synchronous opening and closing of the forceps is realized. Synchronous closing of jaws of the three groups of movable forceps holders and the fixed forceps holder is realized, so that a plurality of tissue samples can be obtained from different parts at the same time in single operation, the biopsy sampling efficiency is improved, and the pain and bleeding risk of a patient are prevented from being increased; the fixed forceps holder and the movable forceps holder are independently moved and adjusted to a preset depth, so that more accurate tissue sampling depth adjustment is realized, and the sampling positioning accuracy and the subsequent sample detection accuracy are improved; independent and rapid collection of a plurality of samples is realized, cross contamination of the plurality of samples is avoided, and the reliability of subsequent pathological results is ensured.

The utility model discloses a drawing jig. The drawing jig comprises a base; the clamping structure at least comprises a first clamping plate and a second clamping plate which can move oppositely or oppositely, a first notch is formed in the side portion, facing the second clamping plate, of the first clamping plate, and a second notch is formed in the position, corresponding to the first notch, of the side portion of the second clamping plate; the drawing assembly is arranged on the base and used for pulling out the nylon rod in the ear hook clamped by the first clamping plate and the second clamping plate; according to the nylon rod separating device, the problems that in traditional nylon rod separating equipment, generally, a nylon rod is manually clamped to be separated from an ear hook, but due to uneven manual force application, the ear hook can be possibly deformed, and the separating efficiency is low can be solved.

The utility model discloses a transverse arc-shaped haemorrhoids forceps holder treatment device which comprises two forceps handles, the forceps handles are rotationally connected, the outer end of one of the forceps handles is connected with an installation piece in a clamped mode, the outer end of the installation piece is provided with an auxiliary treatment assembly, and the auxiliary treatment assembly comprises a cavity connecting plate fixedly connected to the outer end of the installation piece. The cavity connecting plate is internally and symmetrically connected with micro gears in a rotating mode, the two micro gears are meshed with each other, the outer end of the supporting rod is fixedly connected with a clamping sleeve, and a clamping groove is formed in the top end of the clamping sleeve. According to the transverse arc-shaped forceps holder treatment device for haemorrhoids, through the two sets of meshed micro gears, the two sets of micro gears rotate in the opposite directions, so that the two sets of supporting rods drive the clamping sleeves at the outer ends of the supporting rods to rotate in the opposite directions, a rubber ring clamped between the two clamping sleeves is conveniently opened, and meanwhile the caliber of the rubber ring opened towards the two ends can be adjusted through operating forceps; the hemorrhoid treatment device is suitable for large-size external hemorrhoids and is easy and convenient to operate.

The utility model relates to the technical field of medical instruments, in particular to a multi-channel tissue clip running-hair clip forceps for ligating and closing lumen tissues. Comprising a holding mechanism (2), a forceps clip mechanism (3), a closing mechanism (4) and a multichannel tissue clip (5), the holding mechanism (2) comprises a fixed handle (20) and a rotating wheel (21); the fixed handle (20) is of a pistol type structure formed by combining a left piece and a right piece, a coaxial multi-section type cylindrical groove (202) is formed in the inner side of the fixed handle (20), and the front end of the cylindrical groove (202) is connected with the rotating wheel (21) in a matched mode so that the rotating wheel (21) can rotate but cannot move in the axial direction. The forceps clip mechanism (3) is composed of a forceps pressing handle (30), a forceps pressing pipe (31), a forceps pressing reset spring (32), a clip seat pipe (33), an upper forceps head (34) and a lower forceps head (35). The closing mechanism (4) is composed of a front push needle (41), a rear push needle (42) and a push needle pin (43).

The application provides a rotation prevention transmission mechanism of a tissue fixing device and the tissue fixing device, which comprises a supporting mechanism, a clutch mechanism and a rotation prevention locking assembly. The supporting mechanism comprises a fixed connection assembly and a driving assembly which is threadedly matched with the fixed connection assembly to realize relative axial movement. The rotation prevention locking assembly comprises a locking biasing member and a locking member. The locking biasing member provides a biasing force to the locking member towards the driving assembly. The driving assembly is provided with a rotation prevention locking opening. The rotation prevention locking assembly is arranged such that when the driving assembly is in a separated state from the operating rod and moves to a preset area relative to the fixed connection assembly, the locking member is pressed into the rotation prevention locking opening by the locking biasing member to limit the rotation of the driving assembly relative to the fixed connection assembly. By arranging the rotation prevention locking assembly, the rotation of the driving assembly is limited by the locking member in the case that the driving assembly is separated from the operating rod, stable locking is realized after the valve clamping instrument completes clamping, and relative rotation of the transmission rod is avoided to affect the clamping stability.

The medical forceps comprise a supporting rod, a forceps head assembly, an operating rod and a transmission mechanism, and the first end of the supporting rod is provided with a connecting part; the forceps head assembly comprises a first forceps head and a second forceps head which are rotationally connected together; the operating rod is connected with the first tong head and the second tong head through the transmission mechanism, and when the operating rod moves relative to the supporting rod in the first moving direction, the operating rod drives the first tong head and the second tong head to synchronously rotate relative to the connecting part through the transmission mechanism. When the operating rod moves relative to the supporting rod in the second moving direction, the operating rod drives the first tong head to rotate relative to the second tong head through the transmission mechanism. According to the embodiment of the utility model, the bending angle of the forceps head assembly relative to the supporting rod is controlled through the operating rod, and the forceps head assembly is controlled to clamp or loosen the to-be-clamped tissues, so that when a surgeon clamps the to-be-clamped tissues at different positions near a surgical incision through the medical forceps, the medical forceps do not need to be replaced, and the surgical process can be simple.

The invention discloses a laparoscope operating instrument capable of turning, and relates to the technical field of medical instruments. The laparoscope operating instrument capable of turning comprises a forceps body and a forceps rod shell, the forceps rod shell is installed on the forceps body, a forceps rod inner core is installed in the forceps body, the end, away from the forceps body, of the forceps rod inner core penetrates through the interior of the forceps rod shell and is provided with a forceps clip and a turning adjusting structure, and the turning adjusting structure is located on the forceps body. The turning adjusting structure comprises a plurality of bamboo joint turning blocks, a steel wire, a fixing frame, a rotating plate and a mounting cylinder, and by arranging the turning adjusting structure, the steel wire is used for pulling the deformable forceps rod inner core of the flexible pipe structure, and the design of slope grooves of the bamboo joint turning blocks is matched, so that the turning angle of the forceps holder can be accurately adjusted; a doctor can flexibly adjust the angle of the forceps holder according to actual requirements in the surgical operation, so that different surgical sites and operation requirements can be better adapted, and the surgical accuracy and success rate are improved.

The present invention relates to a jaw assembly and an applicator forceps, belonging to medical surgical devices. The jaw assembly includes a clamping mechanism, the clamping mechanism includes a first clamp and a second clamp which are oppositely arranged, and the first clamp and the second clamp move between an open position and a closed position to form a clip for a ligating clip located within the clamping mechanism. A symmetry axis is formed between the first clamp and the second clamp. The jaw assembly further includes a moving member that can move relative to the clamping mechanism along the direction of the symmetry axis, and a guiding and closing mechanism formed between the moving member and the clamping mechanism. The guiding and closing mechanism includes a guiding post formed on one of the moving member and the clamping mechanism and a guiding groove formed on the other of the moving member and the clamping mechanism. The guiding post moves within the guiding groove to form a first position corresponding to the open position and a second position corresponding to the closed position. The guiding post moves between the first position and the second position to cause the first clamp and the second clamp to move between the open position and the closed position.

The bipolar electrocoagulation forceps with the suction function comprise a handle, a forceps holder, a sleeve assembly and a suction tube, the tube wall, making contact with the forceps holder, of the end of the suction tube protrudes upwards to form a first surface, and the inner surface of the forceps holder is provided with a second surface matched with the first surface; a plurality of first bulges are arranged on the first surface, a plurality of second bulges are arranged on the second surface, and the plurality of first bulges and the plurality of second bulges form a press fit structure. According to the scheme, the bipolar electrocoagulation forceps integrate the function of sucking air and liquid to be discharged, a doctor can conveniently complete clamping, blood coagulation and suction operations on tissues with one hand in an operation, the surface area and friction force between the forceps and the clamped tissues are increased due to the design of the jaws, and a better blood coagulation effect can be achieved.

The utility model discloses a circumferential torque testing device for a steel-plastic conversion pipe fitting, which comprises a hydraulic pipe wrench, an adjustable telescopic force rod and a digital display torque wrench measuring mechanism, the adjustable telescopic force rod comprises a fixed force rod, a movable force rod and a fixed bolt, one end of the fixed force rod is fixedly connected with the hydraulic pipe wrench, and the other end of the fixed force rod is fixedly connected with the digital display torque wrench measuring mechanism. First through holes are uniformly formed in the fixed force rod and the movable force rod respectively, the fixed bolts are inserted into the first through holes to realize connection between the fixed force rod and the movable force rod, and the other end of the movable force rod is fixedly connected with the digital display torque wrench measuring mechanism; and the hydraulic pipe tongs clamp the metal pipe fitting of the steel-plastic conversion pipe fitting, and clamp and rotate to measure the torque force. According to the utility model, the force rod with the telescopic adjustable function is arranged, the measuring range is large, and the test requirements of different workpieces can be met.

The utility model relates to the technical field of exposure forceps, in particular to a pair of multifunctional needle type exposure forceps for weight loss metabolism surgery, which comprises a piston component, a piston rod, a needle tube, an exposure forceps, a clamping plate and a connecting rod, the needle tube is arranged on the piston component, the exposure forceps are slidably connected to the inner side of the lower portion of the needle tube, and the exposure forceps are connected with the piston rod. A clamping plate is connected to the lower portion of the exposure clamp, the initial state of the clamping plate is a tightened state, and four connecting rods are connected to the outer wall of the lower portion of the needle tube in a vertically symmetrical mode. According to the utility model, the swing plate, the distraction plate and the contact block are arranged, and the exposure forceps are provided with four distraction plates, so that the exposure forceps can distraction human tissues to a larger area, the area of a surgical operation area is effectively enlarged, a doctor can perform surgical operation conveniently, the area of the distraction plate is increased, and the operation efficiency is improved. Therefore, the contact area between the exposure forceps and the human tissue is increased, so that the situation that the human tissue is damaged due to large local pressure of the human tissue is not easy to occur.

The present invention discloses a rib cartilage rhinoplasty auxiliary tool, which relates to the field of maxillofacial surgery and aesthetic medical tools, and provides a rib cartilage rhinoplasty auxiliary tool that makes nasal septum suturing more convenient and accurate. The tool comprises a clamping forceps, a clip, a clip mounting strip, a guide post, and a height adjustment structure. The clamping forceps comprises two clamping forceps handles, the front ends of which are first clamping forceps rods; the clip mounting strips are located above the front ends of the clamping forceps handles, and the front ends of which are second clamping forceps rods; each clamping forceps handle is connected to two guide posts, and the clip mounting strips are sleeved on the guide posts; the height adjustment structure is connected to the clamping forceps handles, and the height adjustment structure can fix the clip mounting strips and adjust the height of the clip mounting strips; the clip comprises an elastic member and at least three clip units, each clip unit is arranged in an up-down direction, and each clip unit has a suture positioning hole, the lowermost clip unit is connected to the first clip rod, and the uppermost clip unit is connected to the second clip rod.

The invention relates to biopsy forceps for excision of a tissue sample, comprising at least two forceps jaws which are mounted so as to be reversibly pivotable between an open and a closed position by means of pivot kinematics, of which at least one forceps jaw has a concave contour which, in the closed position, encloses a resection volume in cooperation with the at least one other forceps jaw. The invention is characterised in that a cutting device is provided which is connected or can be operatively connected to at least one of the forceps jaws in such a way that the cutting device divides the resection volume into two resection partial volumes in the closed position of the at least two forceps jaws and separates a tissue sample located in the resection volume into two tissue sample parts by mechanical cutting.

A method for producing a surgical instrument for grasping and / or holding and / or guiding a needle includes: a) producing a first arm part and a second arm part, each having a distal holding jaw with a recess and a solder deposit region; b) inserting hard metal inserts into the recesses in the distal holding jaws; c) joining the first arm part and the second arm part so that the first arm part and the second arm part are pivotable relative to one another at a joint; d) filling the solder deposit regions with solder; and e) soldering the hard metal inserts in the distal holding jaws using the solder.

The utility model discloses a net bag set for taking polyps, and belongs to the technical field of medical instruments. Comprising an outer sheath tube, the front end of the outer sheath tube is provided with a biopsy forceps head and an energizable net bag located below the biopsy forceps head, the energizable net bag can carry a polyp sample after the polyp sample is electrically cut and separated after being energized, and the tail of the outer sheath tube is provided with an operating handle used for controlling the biopsy forceps head and the energizable net bag to move. According to the net bag set, the biopsy forceps and the net bag are designed in the outer sheath tube, the net bag can be powered on, the function of electrically cutting a polyp specimen with a small size is achieved, the net bag set integrates the biopsy forceps clamping function, the polyp electric cutting separation function and the polyp taking-out function, a plurality of surgical instruments do not need to be used in cooperation, and the operation cost is reduced. The endoscope clinical operation efficiency is greatly improved, and the practicability is high.