75 results about "Needle knife" patented technology

The invention provides a dynamic approach planning method and system for an acupotomy scope, and relates to the technical field of approach planning of the acupotomy scope, and the technical scheme is characterized in that real-time image data of an articular cavity is acquired; the real-time image data and the preoperative image data are subjected to registration analysis, and anatomical structure changes in the articular cavity are recognized; according to the recognized anatomical structure change in the joint cavity and a preset anatomical partition rule, anatomical partition information is dynamically updated, and updated anatomical partition information is obtained; according to the updated anatomical partition information, an approach path is set before an operation, real-time path adjustment is carried out, and an optimized needle knife mirror safe approach path is generated; and displaying the real-time image data, the updated anatomical partition information and the optimized safe approach path of the acupotomy mirror in an overlapping manner so as to guide a doctor to operate. The dynamic approach planning method and system for the acupotomy scope have the advantages that the dynamic change of an anatomical structure in an intra-operative joint cavity can be adapted, and safe operation of surgical instruments is ensured.

The utility model relates to a needle-knife clamp and a needle-knife grinding machine. A plurality of workpiece sleeves are arranged on a base plate of the needle knife clamp, the workpiece sleeves are located on the front side of the base plate and arranged on the same plane in parallel, sleeve through holes used for installing the workpiece sleeves are formed in the base plate, and the rear ends of the workpiece sleeves are detachably connected to the sleeve through holes of the base plate. A workpiece pressing device used for pressing the rear end of a workpiece forwards is arranged on the rear side of the base plate, a pressing plate of the workpiece pressing device is a V-shaped plate, and a workpiece sleeve can be a metal capillary tube. A main shaft system and a feeding system are arranged on a machine body of the needle-knife grinding machine, and a support plate used for clamping the workpiece clamp is connected to a feeding frame through an angle adjusting mechanism. The device is suitable for grinding slender pieces such as needle knives, and workpiece bending in the grinding process can be relieved or avoided.

The utility model belongs to the technical field of medical instruments, and discloses a light source smoke suction tungsten needle knife, a control panel and a power line are welded downwards, the power line penetrates out of the lower end of a handle, internal electric control parts are integrated in the control panel, an electric resection button, an electric coagulation button and a light source button are installed in the handle from the inside and extend to the outside, and a lamp bead is integrated at the front end of the control panel. The insulating head is pressed into the functional tube of the tungsten needle cutter head, the electrode extends out of a middle hole of the insulating head, and a high-temperature-resistant wrapping tube is arranged at the outer end of the electrode. The electrocision and electrocoagulation illuminating device is better in electrocision, electrocoagulation and illuminating effects. The tungsten needle cutter head can be stretched and retracted to any length, and the open type operation requirement is met. The electrode head is anti-adhesion, scabbing and adhesion are prevented, and the unique design of the electrode head ensures the cutting efficiency. The tip of the tungsten needle knife head is more tapered, and the tungsten needle knife head is more resistant to high temperature, more stable, more durable, safer, easier to carry out fine ablation operations such as neurosurgery, brain department and the like, and finer.

The utility model discloses an acupuncture needle-knife treatment support, and relates to the technical field of medical instruments. The adjusting unit is arranged on the outer surface of the supporting unit and used for assisting in supporting, the supporting unit comprises a moving assembly and a lifting assembly arranged on the outer surface of the moving assembly, and the adjusting unit comprises an adjusting assembly arranged on the outer surface of the lifting assembly and a supporting assembly arranged on the outer surface of the adjusting assembly. According to the acupuncture needle-knife treatment support, the supporting sleeve, the movable base, the threaded rod, the supporting pad, the lifting rod, the limiting rod, the clamping plate and the limiting spring are matched with one another, so that the height of the adjusting unit can be conveniently adjusted, and meanwhile the position of the acupuncture needle-knife treatment support can be conveniently adjusted; the hinge base, the adjusting arm, the first fixing bolt, the sleeve, the second fixing bolt, the expansion arm, the third fixing bolt, the adjusting seat and the mounting frame are matched with one another, so that the position of the mounting frame can be conveniently adjusted, and the flexibility of the acupuncture needle-knife treatment support is improved.

This utility model relates to a complete set of small needle knives for tenosynovitis and nerve entrapment diseases, belonging to the field of medical device technology. The aim is to provide a convenient and easily selectable set of small needle knives for tenosynovitis and nerve entrapment diseases that reduces collateral damage. The technical solution includes a circular needle knife, a probe, a separating needle, a hook needle knife, and a storage box for storing the aforementioned needle knives. The circular needle knife includes a handle and a needle body, with the needle tip having an arc-shaped outer curved edge. The probe includes a handle and a needle body, with the needle tip being a spherical probe. The separating needle includes a handle and a needle body, with the needle tip being a pointed cone shape. The hook needle knife includes a handle and a needle body, with the needle tip bent into an arc shape and having an inner curved edge. This utility model is used for small needle knife treatment of tenosynovitis or nerve entrapment diseases.

The invention belongs to the technical field of traditional Chinese medicine treatment, and discloses a method for treating knee joint diseases through a thigh medial oblique puncture method based on meridian differentiation, which comprises the following steps: step 1, performing acupuncture by adopting a 15-30-degree oblique puncture method with the height consistent with that of thigh medial muscle group fibers; 2, using a disposable sterile small needle knife with the specification of 0.5 mm * 75 mm as a needling instrument; 3, 2-3 short-range treatment cycles are set, a puncture part is positioned and disinfected firstly, and lesion areas such as medial femoral muscle deep fascia are accurately found; then a 0.5 mm * 75 mm blunt-end small needle knife is selected, and the 75 mm length can directly reach the deep lesion area of the knee joint from the inner side surface layer of the thigh. When the needle is inserted, a 15-30-degree oblique needling method is adopted, and the angle and the trend of muscle fibers on the inner side of the thigh completely go deep along muscle fiber gaps and easily penetrate into a deep layer. The 0.3 mm blunt end of the needle tip can be slightly pushed away instead of being scratched when encountering blood vessels and nerves. Finally, through 2-3 times of centralized treatment, the diseased region is stimulated for multiple times in a short time, the self-repairing ability of the body is quickly activated, adhesion tissues around the knee joint are loosened, inflammation is eliminated, blood circulation is accelerated, and actual application and operation are facilitated.

The invention relates to the technical field of medical instruments, in particular to a split type needle knife which comprises a holding assembly, the bottom of the holding assembly is in threaded connection with an auxiliary fixing assembly, a needle knife assembly is slidably connected into the auxiliary fixing assembly, and the end, close to the holding assembly, of the needle knife assembly is clamped into the holding assembly. The needle-knife assembly comprises a flat-blade needle-knife assembly and an inclined-blade needle-knife assembly, and the inclined-blade needle-knife assembly is connected to the flat-blade needle-knife assembly in a sliding mode. The split type needle knife has the function of flexible switching between a flat blade and an inclined blade, different treatment requirements are met through gear transmission by rotating a driving knob, instrument replacement is reduced, the cross infection risk is reduced, the first needle knife handle is provided with a medicine conveying cavity, the medicine conveying cavity is matched with a closed air bag, the medicine conveying state and the closed state can be conveniently controlled, the split type structure is adopted, and the operation is convenient. Installation and disassembly are easy and convenient, equipment can be rapidly assembled and disassembled, all parts can be fully cleaned and disinfected, cross infection is prevented, and the safety of a patient is guaranteed.

The utility model relates to the technical field of orthopedic appliances, and discloses an osteotomy device which comprises a fixed rod part, a rotating rod part and an osteotomy needle knife positioning insertion plate part, one end of a second rod body of the rotating rod part is connected to a connecting shaft end arranged on a first rod body, and an angle arc rod is arranged at the other end of the first rod body. The other end of the second rod body is arranged on the angle arc rod in a sleeving mode through the sleeve frame end, and the osteotomy needle knife positioning insertion plate part is movably installed in the connecting groove channel, so that the osteotomy needle knife positioning insertion plate part can move on the first rod body and the second rod body; the distance between the osteotomy needle knife positioning insertion plate part and the positioning stop lever is adjusted by moving the osteotomy needle knife positioning insertion plate part, so that bones with different diameters can be conveniently clamped and fixed, and the angle between the first rod body and the second rod body is adjusted by rotating the second rod body, so that the angle between osteotomy needle knives inserted into the osteotomy needle knife positioning insertion plate part is adjusted.

The orthopedic needle knife comprises a needle handle and a columnar needle body, one end of the needle body is connected with the tail end of the needle handle, and the other end of the needle body is provided with a needle head; the front end of the needle head is provided with a probe part for positioning a contracture soft tissue part through pressing, and a side blade part for cutting the contracture soft tissue part is formed on at least one side, located behind the probe part, of the needle head. The contracture soft tissue part is positioned through the probe part located at the front end, lateral cutting can be carried out through the cutting edge part located on the side edge in a downward pressing mode after accurate positioning, rapid linear cutting and releasing of the contracture soft tissue part are achieved, the releasing efficiency of the contracture soft tissue is effectively improved, operation is simpler, and operation is more convenient. And secondary damage can be avoided.

The application discloses an automatic sauce adding and meat loosening machine, which comprises a fixed outer shell body, a movable inner shell body arranged in the fixed outer shell body, a movable barrel, and a base body arranged at the bottom of the fixed outer shell body; the movable inner shell body is integrally provided with a servo deceleration motor, a main control circuit board, a battery and a micro pump; a sauce needle and a hole punching knife are arranged at the lower end of the movable barrel through a needle holder; the servo deceleration motor drives the movable inner shell body, the movable barrel and the needle holder to reciprocate relative to the fixed outer shell body through a gear and a rack, so that the sauce needle and the hole punching knife are extended from the mesh holes on the lower surface of the base body; and the micro pump provides pressure gas to the movable barrel to deliver sauce to the sauce needle. The servo deceleration motor and the micro pump are used to realize reciprocating motion and automatic sauce adding respectively; the movable barrel is used to add sauce under the action of pressure gas; the hole punching depth, the sauce amount and the sauce adding time can be intelligently set; and the operation is convenient and the user experience is high.

The utility model discloses a fascia acupotomy with flushing and negative pressure drainage functions, which comprises a fascia acupotomy body, a needle head is arranged at the far end of the fascia acupotomy body, a flushing hole is arranged on the needle head, a drainage hole is arranged in the middle of the needle head, and a flushing tube cavity and a drainage tube cavity are arranged in the fascia acupotomy body. The far end of the flushing pipe cavity is connected with the flushing hole, the far end of the drainage pipe cavity is connected with the drainage hole, the near end of the flushing pipe cavity is connected with an injection connector, the injection connector is connected with an external injection tool in a matched mode, the near end of the drainage pipe cavity is connected with a drainage connector, and the drainage connector is connected with an external negative pressure drainage bottle in a matched mode. According to the medical syringe, injection and flushing of liquid medicine and medicine can be achieved in release treatment operation, drainage and output of the injected liquid medicine and part hydrops can be achieved, operation and use are more practical and reliable, and treatment operation and use are better facilitated.

The invention relates to the field of medical instruments, in particular to a needle knife and culture dish applied to extraction of wounded part tissue in the treatment process, the needle knife and culture dish comprises a charging wire, the bottom of the charging wire is connected with a fixing barrel, the fixing barrel is of a hollow barrel-shaped structure with an opening in the bottom end, and an inner cavity of the fixing barrel is slidably connected with a protection barrel; one end of the protective cylinder penetrates through an opening in the bottom end of the fixed cylinder and extends to the position below the fixed cylinder, the protective cylinder is of a hollow cylindrical structure with an opening in the bottom end, a needle knife is arranged in an inner cavity of the protective cylinder, a culture dish assembly is arranged at the end, away from the charging wire, of the protective cylinder, and the culture dish assembly is used for storing tissue samples. The knife handle can be pushed downwards or pulled upwards through the electric push rod, so that the needle knife fixed at the bottom end of the knife handle can probe downwards or contract upwards, the height of the needle knife is adjusted, the needle knife is protected, and meanwhile, the needle knife is prevented from injuring a patient accidentally.

The utility model relates to the technical field of ganglion puncture, in particular to a special puncture needle knife for ganglion, which comprises a puncture rod, a needle knife handle and a needle knife handle. A hollow channel is formed in the puncture rod, an opening is formed in the other end of the puncture rod, and the opening is communicated with the hollow channel; a drainage groove is formed in the surface of the puncture rod and communicated with the hollow channel, and the hollow channel in the puncture rod is connected with the opening in the other end of the puncture rod. The puncture needle knife special for the ganglion can rapidly and effectively puncture the ganglion and drain internal hydrops in a minimally invasive mode, repeated puncture is not needed, the pain feeling of a patient is greatly relieved, meanwhile, the treatment efficiency and safety are improved, and the puncture needle knife is beneficial to faster rehabilitation and normal life recovery of the patient.

The application discloses a traditional Chinese medicine micro-invasive regulating needle therapy method and belongs to the technical field of traditional Chinese medicine micro-invasive treatment, and solves the technical problems that traditional therapy for treating soft tissue pain only focuses on the local part and is difficult to solve the adhesion of deep and shallow fascia layers and has a high recurrence rate. The method takes a needle-knife as a main treatment tool, integrates a needle-knife medical theory, a fascia chain theory, a traditional Chinese medicine meridian theory and a biomechanics principle, adheres to a local relaxation + overall regulation core idea, accurately positions a treatment target through three points and one side, intervenes in inflammation-adhesion-spasm three pathological changes, follows a chain point finding and pain treatment by relaxation rule, and finally realizes a treatment goal of human body muscle and bone neutralization. The application is suitable for neck, lumbar vertebra disease, joint pain and related soft tissue lesions of head, face, spine and six big joints and has the advantages of micro-invasiveness, precision, treatment of both symptoms and root causes and low recurrence rate, and effectively restores the symmetry stability and functional coordination of the mechanical structure of the human body.

The utility model discloses a polygonal section plastic handle acupuncture appliance and a production device thereof, and belongs to the technical field of acupuncture appliance manufacturing. According to the production device for the acupuncture and moxibustion instrument with the plastic handles with the polygonal sections, the acupuncture and moxibustion instrument is an acupuncture and moxibustion needle or a small acupuncture and moxibustion needle knife and comprises a needle body and the plastic handles, the cross sections of the plastic handles are polygonal, and the plastic handles are bundled to form a plastic handle bundling disc; the production device comprises a needle body transfer cylinder and a magnet, vertically stored needle bodies are arranged in the needle body transfer cylinder; the magnet is connected to the bottom of the needle body transfer cylinder; during production, the needle body transfer cylinder is inverted above the plastic handle bundling disc after being turned over, after the magnet is moved away or power is off, the needle bodies which are demagnetized freely fall on the plastic handle bundling disc, and part of the needle bodies penetrate through the through holes of the plastic handles due to self weight, so that the purpose that the needle bodies penetrate into the plastic handles in batches at a time in a short time is achieved. The technical problem that the production efficiency is low when needle bodies penetrate into plastic handles one by one during production of traditional Chinese medicine acupuncture instruments in the prior art is solved.

The utility model discloses an improved needle knife which comprises a needle handle, a needle body and a knife head which are sequentially connected, the knife head is formed by integrally connecting two U-shaped knife heads in the same direction, a connecting wall in the middle of the two U-shaped knife heads is shorter than non-connecting walls on the two sides of the two U-shaped knife heads, a double-peak wave-shaped outline is formed, a cutting edge is arranged along the double-peak wave-shaped outline, and the cutting edge is round and blunt. The cutting head is in the double-peak wave shape, the releasing area is large, the cutting edge is round and blunt, the cutting area can be enlarged through sliding, damage to surrounding blood vessels and nerves is small, therefore, the number of incisions is reduced, and the pressure reduction effect is good.

The invention discloses a slow-release nutrition preparation for small needle knife guide in an ovarian reflex region and a preparation method of the slow-release nutrition preparation, and relates to the technical field of medical nutrition preparations. 20 to 30 parts of a slow release carrier; 3-6 parts of an absorption enhancer; 45 to 65 parts of a biocompatible auxiliary material; 1-3 parts of a stabilizer; according to the invention, the D-chiro-inositol is helpful for adjusting hormone balance in vivo and promoting ovarian health; glutathione is a potent antioxidant and protects ovarian cells from oxidative damage; the Q10 coenzyme can enhance cell energy metabolism and improve the ovarian function; soybean isoflavone is phytoestrogen and can simulate the action of estrogen of a human body, the core nutritional ingredients are combined with a slow release carrier prepared from chitosan, sodium alginate and a medicinal fungal polysaccharide compound, slow release of nutrient substances is achieved, action time is prolonged, bioavailability of the nutrient substances is improved, the substances are combined, and the slow release effect is achieved. The nourishing and long-acting protection on the ovary reflex region are realized.

The present invention relates to a needle hook for a terry jacquard machine and its forming process, characterized in that: a needle hook for a terry jacquard machine includes a three-layer structure welded together, namely an upper layer, a middle layer and a lower layer. The upper layer and the lower layer are both needle hook pieces. The left end of the needle hook piece is in a hook-shaped structure. The middle layer is a positioning and guiding piece, which is composed of a guiding part and a fixing part connected integrally from left to right. The right end of the fixing part and the right end of the needle hook piece are both in a needle-shaped structure. The right end of the fixing part is fixed between the right ends of the upper and lower needle hook pieces. The left end of the guiding part extends between the upper and lower hook-shaped structures and is fixedly connected thereto. A guiding groove for the sliding of the needle knife structure is formed between the rear side end face of the guiding part and the inner side walls of the upper and lower needle hook pieces. This design has the advantages of simple structure, easy manufacturing, practicality and high efficiency.

The invention relates to the technical field of robot control, and discloses a movement track planning system for a needle-knife robot, which comprises a sensor module, a kinematics modeling module, a path generation and correction module, an optimization module and an intelligent control module, by arranging the path generation and correction module and the optimization module, a basic trajectory can be obtained by dynamically correcting a path in combination with a tissue deformation prediction model, and by combining real-time force feedback and tissue deformation data, the dynamic adaptability is improved, trajectory deviation is effectively prevented, and the accuracy of the system is improved. Meanwhile, a smooth speed curve is generated by adopting a quintic polynomial interpolation method on the basis of the basic trajectory, the smoothness of the trajectory and the continuity of the acceleration are ensured, acceleration abrupt change is restrained through a dynamic compensation algorithm, impact control is conducted on the needle-knife robot, mechanical vibration caused by acceleration abrupt change of the needle-knife robot in the operation process is prevented, and the operation reliability is improved. The surgical risk is reduced, and the surgical safety is improved.

The utility model discloses a needle knife and a system thereof. The needle knife comprises a knife holder; the limiting part is arranged on the tool apron; the cutter group is connected with the limiting part; in the length direction of the tool set, the projection of the limiting part covers the projection of the tool nose of the tool set. In the puncturing process, the tool nose of the tool set conducts puncturing, after the to-be-punctured target is punctured, the tool set continues to move under the inertia effect, the limiting part makes contact with the to-be-punctured target, the tool set is prevented from continuing to move, and therefore the problem that the puncturing depth of the tool set is too large is solved.

The invention relates to an assembled needle knife which comprises a tube blade and an inner blade, the tube blade comprises an upper insertion cylinder and a lower tube needle head, the insertion cylinder is cylindrical, the side face of the insertion cylinder is provided with an insertion opening penetrating to the top face, and one side of the insertion opening is transversely provided with an angle adjusting opening; the cross section of the middle upper part of the tubular needle head is annular; the tail end of the bottom of the tube needle head is pointed; the inner blade comprises an inner column located on the upper portion and a tool bit located on the lower portion, and a shifting rod is arranged on the peripheral side of the inner column. The inner column is matched with the insertion cylinder, and the inner column is inserted into the insertion cylinder during use; the assembly type needle knife has the advantages that the assembly type needle knife is simple in structure and convenient to use, and the requirements of different notches are met through rotation; 2, the wound left on the skin by the combined cutting is the smallest, but the section of the subcutaneous tissue can be obtained is larger;

1. The name of the design product: needle knife syringe needle. 2. The use of the design product: for cancer chemical ablation injection. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design. 6. Other circumstances that need to be explained: part A is transparent material; part B is transparent material.

The invention relates to the technical field of acupuncture and moxibustion instruments, in particular to a disposable self-destruction small needle knife packaging device and passivation protective sleeve, which comprises a needle handle and a needle sleeve, the needle handle is integrally packaged at the tail end of a needle rod, and a boss is arranged at one end, facing a knife head, of the needle handle; the needle sleeve is of a hard structure, the length of the needle sleeve is slightly larger than that of the needle handle, the upper end of the needle sleeve is open, the lower end of the needle sleeve is sealed, the upper end opening of the needle sleeve is matched with the boss in an inserted connection mode, a column sleeve is arranged in the center of the lower end of the needle sleeve and extends towards the interior of the needle sleeve, a tool bit sleeve is arranged in the column sleeve, and the outer diameter of the tool bit sleeve is smaller than the inner diameter of the column sleeve. The lower end of the tool bit sleeve extends out of the lower end of the needle sleeve and is provided with a sleeve base, the diameter of the sleeve base is larger than that of the column sleeve, an opening in the upper end of the tool bit sleeve is matched with a tool bit in an inserted mode, and a grinding block is arranged in the tool bit sleeve. Through hard packaging, a self-destruction structure and an active passivation mechanism, the defects that traditional packaging is prone to damage and repeated use are comprehensively overcome, and safety and reliability are remarkably improved.

This application provides a silicone material and its preparation method for a simulator for minimally invasive acupuncture techniques such as beryllium needles, needle knives, and blade needles used for myofascial release, relating to the field of materials technology. The method for preparing the silicone material provided in this application includes: obtaining a first material and a second material; the first material, by mass parts, comprises 40-120 parts of vinyl-terminated silicone oil, 10-50 parts of fumed silica, 1-50 parts of dimethyl silicone oil, 0.01-5 parts of platinum catalyst, and 0.02-3 parts of inhibitor; the second material, by mass parts, comprises 40-120 parts of vinyl-terminated silicone oil, 10-70 parts of fumed silica, 1-50 parts of dimethyl silicone oil, 4-100 parts of hydrogen-containing silicone oil, 0-5 parts of color masterbatch, and 0.02-3 parts of inhibitor; kneading and mixing the first material and the second material separately to obtain a base adhesive and a curing agent; mixing the base adhesive and the curing agent, stirring evenly, and then heating and molding at a first temperature range to obtain the silicone material. Adjust the amount and viscosity of each component in the silicone to simulate human tissue.

The utility model relates to the technical field of small needle knives, in particular to a flexible and adjustable small needle knife which comprises a knife handle, a telescopic rod and a needle knife fixing assembly. A telescopic rod is slidably connected to the inner side of the knife handle, and a needle-knife fixing assembly is arranged on the inner side of the telescopic rod. A first spring is arranged on one side of the knife handle, a sliding sleeve is arranged on one side of the first spring, a limiting ball is slidably connected to the inner side of the knife handle, a sliding groove is formed in the position, corresponding to the sliding sleeve, of the knife handle, the sliding sleeve is rotationally connected into the knife handle sliding groove, and a groove is formed in the position, corresponding to the limiting ball, of the telescopic rod. According to the device, the length of the knife handle is adjusted in a flexible adjusting mode, switching use is facilitated according to using habits of different hand-held persons, the comfort degree during use is improved, the fatigue feeling of the hand-held persons during use is relieved, and therefore the problems that the knife handle is short and small, consequently, the hand of an operator is prone to fatigue, normal use is affected, and the use cost is reduced are solved. The length of the part, extending out of the knife handle, of the knife handle cannot be freely adjusted for use, and the knife handle cannot adapt to different occasions and conditions.

The utility model discloses a needle knife for treating tenosynovitis, and belongs to the technical field of scalpels. The needle knife mainly comprises a fixing rod, a needle knife head is arranged at one end of the fixing rod, a handle assembly is arranged at the other end of the fixing rod, the needle knife head is of a flat structure bent downwards, two corners of the front end of the needle knife head are in arc transition, blades are arranged on two sides of the lower end face and the front end of the needle knife head, and the downward bending angle a of the needle knife head is 110-130 degrees. The length H1 of the needle knife head ranges from 5 mm to 7 mm, the width of the needle knife head ranges from 1 mm to 2 mm, and the diameter H2 of the fixing rod ranges from 1.2 mm to 2 mm. The acupotomy head is of the shovel-shaped structure, compared with a sickle-shaped structure, a sickle-shaped bent acupotomy head is removed, control is easier, the cutting edges on the two sides of the front end of the acupotomy head are in smooth transition, the situation that in the operation propelling process, the sharp end scratches tendons is avoided, and safety is higher.

The utility model provides a portable needle knife for chopping garlic shoots, which comprises a knife bar, the left end and the right end of the knife bar are both square, the middle of the knife bar is cylindrical, the right end face of a guide rod is connected with a needle knife, a threaded hole is arranged in the middle of the right end face of the knife bar, the needle knife is connected with a screw, the screw is in threaded connection with the threaded hole, and the needle knife is connected with the guide rod. The section of the needle knife is in a right trapezoid shape, the needle knife is provided with a cutting edge, and when the needle knife is installed, the face where the long bottom edge of the right trapezoid is located faces upwards. The cylindrical part of the cutter bar is sleeved with a spring, a sliding shell is arranged outside the cutter bar, square holes are formed in the left end and the right end in the sliding shell, a round hole which is as long as the spring is formed in the middle of the sliding shell, the round hole part of the sliding shell is sleeved on the spring, and the needle knife is arranged in the sliding shell. According to the garlic shoot extractor, the needle knife is pierced into the cauloid of a garlic plant, and the garlic shoot wrapped in the outer skin of the cauloid is cut off, so that the garlic shoot can be extracted easily.

The invention relates to the field of small needle knives, in particular to an improved small needle knife structure with scale marks, which comprises a needle body and a needle handle mechanism, a plurality of scale marks are arranged on the needle body, and the needle body is provided with a flat tip; the needle handle mechanism comprises a needle handle, and a laser lamp assembly, an adjusting assembly and a positioning assembly are installed in the needle handle; laser emitted by the laser lamp assembly faces the needle body; the adjusting assembly is used for driving the laser lamp assembly to rotate; the positioning assembly is used for limiting rotation of the adjusting assembly, so that the position of the laser lamp assembly is fixed; according to the invention, a plurality of scale marks at intervals of 0.5 mm are arranged on the needle body by adopting a laser engraving process, so that an operator can obtain an extremely accurate depth reference when using a small needle knife; clear and accurate scale marks are guaranteed through the laser engraving technology, and the insertion depth of the needle body can be controlled by an operator more carefully through subdivision of each millimeter.

The present invention provides a dissection knife adapted for connection with a flexible manipulator. In one embodiment, said dissection knife comprises a) a ball-head-type knife (20) comprising a hollow tube (22) and a spherical tip (23); b) a needle knife (21) comprising a free end and a fixed end; wherein said free end is inserted through said hollow tube (22); c) a channel (24), wherein said fixed end of the needle knife is connected and said spherical tip of the ball-head-type knife contacts when retracted; and d) a tendon-sheath mechanism (32) for retracting or extending said ball-head-type knife to expose or hide said needle knife (21) respectively.