33 results about "Cutting needle" patented technology

The invention discloses an automatic calibration method and system for a cutting knife needle, a cutting machine and a storage medium. The method comprises the steps that a cutting knife needle is controlled to execute a gradient retraction cutting sequence, and the extension length of the knife needle retracts by a preset gradient length after each time of cutting; collecting a trace image formed on the calibration material by cutting each time through a camera; automatically identifying the shallowest effective cutting trace in the sequence based on image analysis; and calculating the reference zero point of the tool nose according to the sequence number corresponding to the trace, the preset gradient length and the initial extension length. The calibration material has a high-contrast substrate layer and contrast layer structure. The invention further discloses a system for implementing the method, the cutting machine comprising corresponding hardware and a storage medium. According to the invention, full automation of the calibration process is realized, dependence on artificial experience is eliminated, and the method has the advantages of high calibration precision, high efficiency, good consistency and the like.

The application discloses a tube cutting needle exciting structure and an operating method, and belongs to the field of medical equipment. The tube cutting needle exciting structure is used for exciting a tube cutting needle, and the tube cutting needle comprises a tube cutting needle assembly and a shell. The tube cutting needle assembly comprises an inner needle, an outer needle and a cutting needle, and the inner needle, the outer needle and the cutting needle are connected with an inner needle seat, an outer needle seat and a cutting needle seat arranged in the shell respectively. The tube cutting needle exciting structure further comprises an upper string sliding block. A second track parallel to a needle insertion direction is arranged on an inner wall of the shell, and the cutting needle seat, the outer needle seat and the inner needle seat are arranged on the second track. The upper string sliding block can drive the cutting needle seat, the outer needle seat or the inner needle seat to move reversely to the needle insertion direction to an upper string position, so that the tube cutting needle is excited. The tube cutting needle exciting structure has good structural stability. The upper string sliding block can be driven by power, so that the operation is labor-saving, and the doctor's physical strength is saved. In addition, the problem of poor biopsy needle structural stability caused by another power-saving structure is avoided.

The application discloses a kind of electric tube cutting needle's tuning block and electric tube cutting needle, further improve existing electric tube cutting needle.The electric tube cutting needle's tuning block of the present application includes stop hook, bottom plate, sliding slot and second push button, wherein the stop hook includes first arm, second arm, third arm, fourth arm and connecting part;The bottom plate is connected with the bottom of sliding slot and the two are coplanar;Second push button is installed on the lower surface of bottom plate;First arm and second arm are connected into L shape, second arm is connected with the top edge of the first wall of sliding slot and second arm is consistent with the extension direction of the first wall;Third arm and fourth arm are connected into L shape, fourth arm is connected with the top edge of the second wall of sliding slot and second arm is consistent with the extension direction of the second wall;Connecting part, first arm and third arm form U shape.The electric tube cutting needle contains the tuning block, and the tuning block is not easy to be damaged during the use of the electric tube cutting needle.

The application discloses an electric tube cutting needle, which comprises a tube cutting needle assembly and a shell, the tube cutting needle assembly comprises an inner needle, an outer needle and a cutting needle, the inner needle, the outer needle and the cutting needle are connected with an inner needle seat, an outer needle seat and a cutting needle seat arranged in the shell respectively, the electric tube cutting needle further comprises an upper string sliding block and an electric driving mechanism, wherein the upper string sliding block is used for driving the tube cutting needle assembly to realize upper string; the electric driving mechanism is connected with the upper string sliding block and is used for driving the upper string sliding block to make linear reciprocating motion. The electric tube cutting needle can drive the upper string by the motor, is more labor-saving, saves the physical strength of doctors and guarantees normal operation of surgery; and the problem of poor structural stability of the biopsy needle caused by another labor-saving structure is avoided.

The invention discloses an ultrasonic vitrectomy needle head for eye vitreous body aspiration, and relates to the technical field of vitrectomy needle heads, the ultrasonic vitrectomy needle head comprises a shell, a needle sleeve and a needle rod; the device further comprises a dredging assembly. The dredging assembly comprises a magnet ring, a connector pipe, a dredging pipe, a rotating rod, a fixing rod, a rotating ring and an elastic bag. The magnet ring sleeves and is rotationally connected to the end part of the shell, a cylindrical channel is formed in the rotating rod, the rotating rod is rotationally connected into the shell, and the magnet ring drives the rotating rod to rotate; the fixing rod is fixed to the end of the rotating rod and located in a cavity in the shell, a spiral groove is formed in the outer side wall of the fixing rod, and the dredging pipe is wound around the fixing rod and attached to the bottom of the groove; the rotating ring sleeves the outer side of the fixed rod; the dredging pipe is positioned between the rotating ring and the fixed rod; the elastic bag is sleeved with the rotating ring, and the rotating ring is communicated with the connector pipe. When an eye vitreous body operation is carried out, a vitreous body or tissue blocking a needle head can be cleaned out in time, and the influence on postoperative recovery is avoided.

The utility model discloses a pin cutting needle which comprises a pin cutting needle body, the pin cutting needle body is composed of a head end, a pre-cutting part and a tail end which are integrally arranged, the pre-cutting part is located between the head end and the tail end, and the pre-cutting part comprises a first needle foot and a second needle foot which are used for cutting of the pin cutting needle body. In the production process, the pre-cutting part is provided with a plurality of stitches, redundant stitches are cut off according to needs, the consistency of knitting needles is improved, machines do not need to be switched frequently in some procedures, the situation of mismatching in use is avoided, the consistency of the knitting needles is unified, the machines do not need to be switched frequently in some procedures in production, and the production efficiency is improved. And the processing speed is improved.

The invention discloses a tumor tissue microdissection method, device and equipment and a storage medium, and the method comprises the steps: firstly obtaining the contact area of a cutting needle, determining the size of a Tiles image block and a Patch unit which are obtained through grid division of a pathological image, and enabling the Patch unit to be matched with a single-time cutting region of the cutting needle; segmenting the pathological image into Tiles to be detected, and preprocessing to remove a background; the method comprises the following steps: screening tumor Tiles through Tiles-level classification, segmenting the tumor Tiles into Patch units, and distinguishing tumor, para-carcinoma and invalid Patches through Patch-level classification; the tumor concentration is calculated, target Tiles conforming to the preset concentration are screened, a cutting path is generated, and equipment cutting is controlled. According to the method, accurate matching of image analysis granularity and cutting hardware precision is realized, tumor concentration can be quantified, para-carcinoma tissues can be accurately removed, and cutting precision, efficiency and automation degree are remarkably improved.

The utility model discloses a rotary cutting electric coagulation hemostasis needle which comprises an outer needle tube, an inner needle tube and an inner needle tube. The inner needle tube is located in the containing cavity and can move in the axial direction of the outer needle tube; the far-end needle tip is made of a conductive material, is positioned at the farthest end of the outer needle tube, and is used as an electrode for electrode discharge to realize electric coagulation hemostasis; the insulating part is used for electrically isolating the far-end needle tip from the outer needle tube; the wire is used for connecting the far-end needle tip to a power supply module. According to the rotary-cut electrocoagulation hemostasis needle, the discharge electrode is arranged at the needle head of the rotary-cut needle, hemostasis is achieved in an electrocoagulation mode, and the rotary-cut electrocoagulation hemostasis needle has the advantages of being simple in structure, convenient to operate and the like.

The utility model relates to the technical field of surgical instruments, in particular to an ophthalmologic surgical instrument. The ophthalmic surgical instrument comprises an operation main body, an operation handle and a locking piece, the operation body is provided with a limiting groove. The operating handle is movably connected to the operating main body and comprises a cutting part and a pressure applying part which are oppositely arranged; the locking piece is rotationally connected to the operating handle, the rotating axis of the locking piece is arranged in the first direction, and the locking piece is arranged between the cutting part and the pressure applying part; when the pressure applying part is stressed, the operation handle can move relative to the operation body, the locking piece moves to the position opposite to the limiting groove, then the locking piece can be screwed into the limiting groove, and the operation handle is locked. According to the capsulotomy needle, the problem that in the prior art, operation is tedious when a doctor uses the capsulotomy needle can be solved, the operation handle is rapidly locked and unlocked by controlling the locking piece, the operation steps are simplified, and the operation difficulty of the doctor on instruments is reduced.

The application discloses a method for controlling a cutting needle and a cutting machine. The method comprises the following steps: configuring a reference zero point of a cutting needle tip; when cutting a material to be cut, determining a corresponding target cutting length according to obtained material information of the material to be cut; and controlling the cutting needle to perform a cutting task on the material to be cut based on the reference zero point of the cutting needle tip and the target cutting length. The method can improve the adjustment efficiency of the cutting needle.

A telescoping assembly such as an endobronchial ultrasound needle (EBUS) assembly includes a motor coupled to a biopsy needle within a telescoping housing to rotate (such as to oscillate) the needle during tissue harvest to improve harvesting.

The invention relates to the technical field of sharp instrument boxes, and discloses a sharp instrument box capable of cutting needles and a control method thereof.The sharp instrument box comprises a box body and a box cover, the box body is provided with a containing cavity used for containing sharp instruments, the box body is provided with a cutting hole and a recycling hole which are communicated with the containing cavity, the box cover is rotationally arranged on the box body, and a cutting knife is arranged on the box cover; the box cover is driven to rotate to have a box closing state and a box opening state, and when the box cover is in the switching state, the cutting edge part of the cutting knife cuts the cutting hole. By arranging the box cover rotatably arranged on the box body, when the box cover is driven to rotate and has a box closing state and a box opening state, the box cover can be firstly in the box opening state during use, then one end of an infusion tube is put into the containing cavity through the cutting hole, and finally the box cover is driven to be in the box closing state; at the moment, the cutting edge part of the cutting knife can be driven to cut off the infusion tube, the needle head falls into the containing cavity, meanwhile, the sharp instrument box is closed, and two purposes are achieved.

A puncture needle is connected with a freezing mechanism, a rotary-cut needle tube arranged on the puncture needle in a sleeving mode is arranged, a mechanical rotary-cut structure is in linkage with the rotary-cut needle tube, a limiting mechanism is arranged, the rotary-cut needle tube is limited to the near-end position, and pre-stored mechanical energy is formed; a release mechanism linked with the freezing mechanism and the limiting mechanism is further arranged, and the release mechanism is set to start the freezing mechanism and release the pre-stored mechanical energy in a first release position and a second release position respectively, so that the peripheral tissue of the puncture needle is frozen firstly through the single-stroke pushing of the release mechanism; the mechanical rotary cutting mechanism converts the pre-stored mechanical energy output by the limiting mechanism into composite rotary cutting motion of the rotary cutting needle tube to achieve rotary cutting of frozen tissue, so that rotary cutting sampling is completed, the whole process is mechanical, extra electric power or pneumatic power is not needed, the whole product is miniaturized, the weight can be effectively reduced, and operation is convenient.

The application discloses a rotary cutting device, a rotary cutting system and a driving control method thereof, and relates to the technical field of medical devices, in particular to a rotary cutting device, a rotary cutting system and a driving control method thereof. The rotary cutting device comprises a rotary cutting driving body and a first control unit. The rotary cutting driving body is connected with a rotary cutting needle and is used for driving the rotary cutting needle to rotate and cut tissues. The rotary cutting driving body is connected with the first control unit. The first control unit comprises a current monitoring module. The current monitoring module is used for collecting current signals of the rotary cutting driving body in real time. The first control unit is provided with an upper limit threshold value of the current of the rotary cutting driving body. When the current value corresponding to the current signals is greater than the upper limit threshold value of the current, the first control unit adjusts the rotary cutting driving body to reduce the first rotating speed of the rotary cutting driving body. The application can adaptively reduce the rotary cutting rotating speed when high-hardness tissues are cut, avoid damage of the rotary cutting needle blade, and improve the efficiency and safety of the rotary cutting operation.

The application discloses a file adjusting structure and an electric pipe cutting needle, and the file adjusting structure is used for adjusting the firing range of a biopsy needle and comprises a threaded part, a file adjusting part which is threadedly connected with the threaded part, a gear position indicating part which is arranged on the file adjusting part, and a blocking part which is arranged on the file adjusting part. After the biopsy needle is fired, the needle seat of the biopsy needle is stopped by impacting the blocking part. The threaded part is rotated to drive the file adjusting part and the blocking part to move along the needle insertion direction of the biopsy needle or in the reverse direction to adjust the firing range of the biopsy needle. The threaded part is rotated to drive the file adjusting part and the gear position indicating part to move along the needle insertion direction of the biopsy needle or in the reverse direction to indicate the firing range distance of the biopsy needle. The application can realize stepless file adjusting, the firing range of the biopsy needle can be adjusted at will in an interval range, there is no position where impact stress is particularly concentrated on the file adjusting structure, the file adjusting structure can bear a larger number of firing impacts, the firing range distance of the biopsy needle can be indicated, and it is convenient for an operator to confirm the firing distance.

This utility model relates to the technical field of needle manufacturing, and in particular to a nonwoven needle fixed-length cutting device. It uses a collecting mechanism to automatically collect the cut needle blanks, facilitating collection and offering ease of use and high practicality. The device includes a base plate, a support plate, a lifting frame A, and an electric hydraulic clamp. The support plate is fixedly installed on the upper part of the base plate, and the electric hydraulic clamp is fixedly installed below the lifting frame A, located to the right of the support plate. It also includes a fixing plate, a feeding mechanism, a positioning mechanism, and a collecting mechanism. The fixing plate is fixedly installed on the upper part of the support plate and has left and right connecting positioning holes. The collecting mechanism is located below the electric hydraulic clamp. The feeding mechanism is installed on the support plate and has a feeding function. The positioning mechanism is located to the right of the electric hydraulic clamp and has a positioning function.

The application discloses a mechanical frozen rotary cutting biopsy needle, which is characterized in that a puncture needle is connected with a freezing mechanism, a rotary cutting needle tube is arranged on the puncture needle, a mechanical rotary cutting structure is connected with the rotary cutting needle tube, a limiting mechanism is arranged, the rotary cutting needle tube is limited at a proximal end position and a pre-stored mechanical energy is formed, a releasing mechanism is further arranged and connected with the freezing mechanism and the limiting mechanism, the releasing mechanism is arranged to open the freezing mechanism and release the pre-stored mechanical energy by releasing the limitation at a first releasing position and a second releasing position respectively, and then the releasing mechanism is pushed by single stroke to realize the freezing of the peripheral tissue of the puncture needle, the pre-stored mechanical energy output by the limiting mechanism is converted into the composite rotary cutting motion of the rotary cutting needle tube by the mechanical rotary cutting mechanism to realize the rotary cutting of the frozen tissue, and the rotary cutting sampling is completed, the whole process is mechanical, no additional electric power or pneumatic power is needed, the product is miniaturized as a whole, the weight can be effectively reduced, and the operation is facilitated.

The utility model discloses an injector assembly, and relates to the technical field of medical instruments. Comprising a needle cylinder, an isolation plate is arranged in the needle cylinder, a cavity is formed in one side of the interior of the needle cylinder, sliding grooves extending into the cavity are symmetrically formed in the side, located in the cavity, of the surface of the needle cylinder, a circular ring is slidably connected to the interior of the cavity, a connecting frame is slidably connected to one side of the interior of the needle cylinder, and shifting blocks connected with the circular ring are slidably connected to the surfaces of the sliding grooves; a first magnetic ring is fixedly mounted on the inner ring surface of the circular ring, and a second magnetic ring is fixedly mounted on the outer ring surface of the connecting frame; the extending needle head is limited and fixed through the arranged limiting assembly, at the moment, the spring assembly is extruded and has elastic force, after injection is completed and the needle head is pulled out, limiting on the shifting block is relieved, and the needle head retracts into the needle cylinder again under the elastic force of the spring assembly; and the hand of a user is prevented from being injured and infected when the needle cap covers the surface of the needle head again.

The invention discloses a vitreous body cutting head with a composite outer tube structure for ophthalmology department, and relates to the technical field of vitreous body cutting needles, the vitreous body cutting head comprises a shell, a needle rod and a needle sleeve; the device further comprises a vibration assembly. The vibration assembly comprises a vibration motor, a vibration ring, a vibration pipe, a connecting ring and a cushioning pad, the vibration ring is rotationally connected into the shell and makes contact with the end of the vibration pipe, and the vibration pipe is located in the shell; the end part of the vibration tube is fixed on the connecting ring; the connecting ring can reciprocate along the axis direction of the vibration tube; the connecting ring is in contact with the cushioning pad, the cushioning pad is a hollow capsule body filled with silica gel, the cushioning pad can be extruded by the vibrating tube to deform, and the needle rod is fixed on the cushioning pad; the vibration ring is composed of a first flange ring, a second flange ring and a third flange ring, the three flange rings are coaxial circular rings and make contact with the ends of the vibration pipe respectively, the first flange ring and the second flange ring are connected through a ratchet wheel, and the third flange ring is rotationally connected to the second flange ring; the cutting efficiency can be improved, and the traction force generated on tissues can be reduced.

The utility model discloses a detachable needle module for microdissection, which belongs to the technical field of microdissection and comprises a driving shaft and a cutting needle. The driving shaft is connected with a quick connection assembly for quick disassembly and quick assembly; the quick connection assembly is connected with a connecting shaft; the end, away from the driving shaft, of the connecting shaft is provided with a fixing assembly used for installing the cutting needle, and the cutting needle is inserted into the fixing assembly. A contact sensing assembly used for detecting whether the connecting shaft is separated from the driving shaft or not is installed in the driving shaft and the connecting shaft. The cutting needle is inserted into the fixing assembly, so that the cutting needle is convenient to install; the connecting shaft drives the magnetic attraction of the quick connection assembly to the end of the driving shaft, quick installation of the connecting shaft is achieved, the connecting shaft and the driving shaft can be quickly separated when the cutting needle makes hard contact with the glass slide, damage to the glass slide, the cutting needle and a sample is avoided, waste of precious samples and deviation of experimental data can be avoided, meanwhile, the use cost is reduced, and in addition, the use efficiency is improved. The contact sensing assembly can detect the connecting state of the connecting shaft and the driving shaft.

The present invention provides an ophthalmic surgical probe device, which relates to the technical field of medical instruments and includes a cutting unit, an adjustment unit, a shell and a driving unit; the cutting unit includes an outer cutting needle and an inner cutting needle, the outer cutting needle has at least two first openings on the same side, and the two opposite sides of the inner cutting needle each have at least one second opening, and the adjustment unit adjusts the position of the first opening to correspond or staggered with the second opening; the adjustment unit can realize the correspondence between the different opening positions of the outer cutting needle and the inner cutting needle through the adjustment unit, so as to meet the fine operation of higher cutting rate and lower suction flow in the fine cutting state, and meet the high efficiency operation of lower cutting efficiency and higher suction flow in the high efficiency cutting state, thereby alleviating the technical problem in the prior art that the modal working mode switching for fine cutting and high efficiency cutting cannot be met according to the needs of different surgical procedures.

The utility model relates to a low-wound painless injection needle which comprises a needle body section and a needle eye section formed by cutting an original section, the needle is symmetrical according to the symmetry plane of the needle, and the needle eye section comprises a stabbing and cutting section, a breaking and cutting section, a bionic resistance reducing section and a low-wound section which are sequentially arranged in the direction from the needle tip to the needle body section; the stabbing and cutting section comprises two first concave cylindrical surfaces which are symmetrical according to the symmetrical surface of the needle head; the breaking and cutting section is formed by chamfering the original cutting surface; the bionic resistance reduction section comprises a plurality of second concave cylindrical surfaces; and the low-wound section is formed by rounding the original section. By arranging the puncturing and cutting section, the needle head is sharper, the puncturing part of the needle head is thinner, and the pain-free feeling is enhanced; by arranging the bionic resistance reduction section, the skin nerves of the patient are regularly relaxed, and the pain feeling is reduced. By arranging the bionic anti-drag section and the low-wound section, an original sharp inclined plane is changed into a smooth structure, cutting to blood vessels is reduced, and after the original mode that the needle head is inserted and slides and cuts at the same time is changed into the mode that the needle head punctures the blood vessels, the needle head is inserted in the state that a puncturing opening expands naturally and elastically.

The utility model belongs to the technical field of medical instruments, and discloses a biopsy gun with double firing buttons and a self-locking function, which comprises a shell and a needle tube assembly, an inner core needle, a cutting tube and an outer sleeve are coaxially nested from inside to outside, and a pushing piece, a cutting needle tube fixing piece, an elastic assembly and the firing buttons are arranged inside and outside the shell. The cutting tube and the outer sleeve are fixedly connected with the cutting needle tube fixing part and elastically connected with the bottom of the near end of the shell through the elastic assembly, the pushing part is arranged on the outer side of the cutting needle tube fixing part and can drive the cutting needle tube fixing part to move towards the near end and compress the elastic assembly to enable the device to be in a winding state, and the excitation button is arranged on the end face of the near end of the shell. The excitation button is used for exciting the cutting needle tube fixing piece to emit, and the pushing piece is connected with the excitation button and can also excite the cutting needle tube fixing piece to emit. The percussion button is additionally arranged on the end face of the near end of the shell, limitation of the angle of a biopsy gun is avoided, operation of an operator is facilitated, and different biopsy operation requirements can be met.

The invention provides a shark mouth type sampling device and a multi-blade-face needle tip, the shark mouth type sampling device comprises a handle assembly, a guide assembly, a multi-blade-face needle tip and a suction assembly, the multi-blade-face needle tip is detachably installed on the handle assembly through the guide assembly and penetrates through the head and the tail of the handle assembly, and the suction assembly is detachably installed on the handle assembly through the guide assembly. The suction assembly is detachably installed at the tail end of the handle assembly and communicated with the multi-blade-face needle point, the head end of the multi-blade-face needle point is provided with a plurality of cutting needles, a plurality of cutting blades and a plurality of cutting openings to form a plurality of blade faces, and the multi-blade-face needle point is operated through the handle assembly to cut tissue from multiple directions. Then the sampling tissue strips obtained through cutting are sucked out under the negative pressure effect of the suction assembly, the obtained sample tissue is complete and large in amount, cutting is efficient, and the operation time is shortened.

The utility model provides a detection device for detecting the service life of a rotary-cut needle, and the device comprises a supporting seat which is internally provided with an accommodation cavity. The driving mechanism is arranged in the accommodating cavity; the positioning seat comprises a positioning cavity used for positioning the rotary cutting needle, the positioning cavity is communicated with the containing cavity, and the driving mechanism is partially located in the positioning cavity and used for being connected with the rotary cutting needle so as to drive the rotary cutting needle to move. The positioning seat is used for bearing the rotary-cut needle needing to be detected, then the driving mechanism in the containing cavity is used for driving the rotary-cut needle to move in the positioning seat, the action of the rotary-cut needle in the operation process is simulated, the service life of the rotary-cut needle can be obtained through testing, and the safety of the operation is guaranteed.

The utility model relates to a cutting mechanism for dentist needle box processing, which comprises a processing table, a pair of placing seats are symmetrically fixed above the processing table, an arch-shaped frame is fixed above the processing table, two vertically extending guide rods are inserted on the arch-shaped frame in a sliding and penetrating way, lower pressing seats are fixed at the lower end parts of the two guide rods, and the positions of the lower pressing seats and the placing seats are in one-to-one correspondence; a driving mechanism used for driving the two guide rods to be synchronously lifted and adjusted is arranged above the arch frame, a sliding groove extending in a front-back penetrating mode is formed in the position, located between the two downward pressing bases, of the arch frame, a sliding frame capable of being moved and adjusted front and back is slidably installed in the sliding groove, and a cutting device used for cutting the needle box is arranged below the sliding frame. According to the needle box cutting device, the driving mechanism works to drive the guide rod and the pressing seat to press downwards, the pressing seat and the arch-shaped frame are matched to tightly press the needle box, the needle box is fixed, the sliding frame and the sliding groove are matched, so that the cutting device can feed and retreat back and forth, cutting is convenient, traditional handheld operation is replaced, and safety is high.

A surgical robot system includes a combined end effector for performing suturing operations. The end effector includes a pair of pivotable grippers, each gripper comprising a distal gripping surface and a proximal cutting body having a straight and / or curved blade that is obscured unless the grippers are fully open. The opening angle and aperture between the grippers, and between the corresponding gripping surfaces and the blade, are controlled by paddles movable relative to a handle. The system includes a controller for implementing various control schemes to guide, adjust, and provide feedback to user input via the paddles to control the aperture between the grippers and to operate the end effector in gripping and cutting modes.

The utility model discloses an anti-stabbing sharp instrument box, and particularly relates to the field of neurology, the anti-stabbing sharp instrument box comprises a box body, the bottom of the box body is in threaded connection with a spiral bottom cover, the anti-stabbing sharp instrument box is characterized in that the top of the box body is provided with a cut-off mechanism, the cut-off mechanism comprises a box cover, and the front side of the top of the box cover is provided with a feeding groove; the left side and the right side of the feeding groove are provided with a pair of blades which are in mirror symmetry and can conduct rotary cutting. A sliding rod is pulled clockwise, the sliding rod drives a right rotating rod and a blade to rotate clockwise through a driving block, and meanwhile, a left rotating rod and a corresponding blade are driven to rotate anticlockwise through transmission of two gears, so that the effect that the two blades rotate oppositely is achieved, and a needle head located in a feeding groove is cut; and after cutting, the two blades cover the feeding groove to prevent the cut needle from splashing out. Other articles such as glass and knife fragments can be directly put into the putting groove. Therefore, the effect of preventing misunderstanding of the cutting device is achieved.

A cutting needle holder includes first and second arms hingedly connected at a pivot region, each arm having proximal and distal ends and medial gripping portions, wherein the distal ends of the first and second arms form jaws comprising a cutting region and a gripping region separate from the cutting region, and wherein the proximal end of the first arm releasably attaches to the proximal end of the second arm. In some embodiments, the cutting needle holder includes a locking mechanism positioned in the medial gripping portion between the first and second arms configured to lock the arms together.

The utility model discloses a pair of needle breaking forceps which comprises two forceps handles and two forceps heads, and the two forceps handles are hinged to each other. The two clamp heads are connected with the two clamp handles in a one-to-one correspondence mode, and the two clamp handles rotate relatively so as to drive the two clamp heads to rotate relatively; each tong head is provided with at least one first through hole and at least one second through hole, and the aperture of the second through hole is larger than that of the first through hole; the two plier handles can relatively rotate to a first shearing position and a second shearing position, when the two plier handles are located at the first shearing position, the included angle between the two plier handles is alpha 1, and at least one first through hole of the two plier heads is in an aligned state; when the two forceps handles are located at the second shearing position, the included angle between the two forceps handles is alpha 2, at least one second through hole of the two forceps heads is in an aligned state, and alpha 2 is larger than alpha 1. And when the two forceps handles are located at the second shearing position, the included angle between the two forceps handles is relatively larger, and the two forceps handles have a larger shearing angle, so that the needle breaking forceps can easily shear a needle-shaped structure with a larger diameter.