48 results about "Needle knife" patented technology

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 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 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 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.

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.

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 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.

The invention discloses ultrasonic-guided calcification stove needle-knife minimally invasive cleaning equipment which comprises a grinding mechanism, a needle-knife expansion assembly for guiding the grinding mechanism into a human body, a collecting assembly for collecting calcification stove scraps in the human body under negative pressure, and an ultrasonic locator for monitoring and checking. The grinding mechanism comprises a driving assembly, a connecting piece and a grinding head, and the driving assembly drives the grinding head to rotate and / or vibrate through the connecting piece; the needle-knife expansion assembly forms a guide channel between the outside and the calcification stove, and the connecting piece drives the grinding head to enter the calcification stove from the guide channel to make contact with the calcification stove. The condition inside the human body can be observed through an arthroscope without opening by utilizing an ultrasonic locator, the size of a wound is reduced, treatment can be carried out in an outpatient service through a guide channel formed by the needle knife expansion assembly, the operation is simpler, the risk of symptom recurrence caused by residues is reduced, the recovery is faster after treatment, and the treatment efficiency is improved. The treatment effect is improved, and the treatment cost is reduced.

The application relates to a needle-knife appliance with a medicine injection function, which comprises a needle body, a needle handle fixedly connected to the rear end of the needle body, and an injection push rod arranged at the rear end of the needle handle, a medicine liquid storage cavity penetrating through the front and rear ends is arranged in the needle handle, the front end of the injection push rod extends into the medicine liquid storage cavity, a detachable locking ring is arranged between the rear end of the needle handle and the rear end of the injection push rod, the rear end of the injection push rod is provided with a pressing cap, the locking ring is sleeved on the injection push rod, the locking ring is arranged in the form of an open ring, and the locking ring is connected with the pressing cap and the needle handle through multiple points on the two sides respectively. The needle-knife appliance contains medicine and medicine injection structure, medicine is injected to the affected area while the needle-knife is implanted, and the convenience of the needle-knife is improved.

The application provides a needle separating and copying combined cutter, a middle disc assembly with the same and a hosiery machine. The combined cutter comprises, from bottom to top, a combined cutter base, a reset device, a needle separating and copying assembly and a needle separating assembly. The needle separating and copying assembly is vertically slidably connected to the inside of the combined cutter base, and the needle separating assembly is fixedly connected to the top of the combined cutter base. The combined cutter further comprises a first driving device for driving the needle separating and copying assembly to slide downward. The first driving device cooperates with the reset device to make the needle separating and copying assembly separate downward or abut upward against the needle separating assembly. The abutting includes the abutting of the needle separating cutter of the needle separating and copying assembly and the needle copying cutter of the needle separating assembly. The needle separating and copying combined cutter, the middle disc assembly with the same and the hosiery machine greatly improve the limitation of the structure of the single needle cylinder hosiery machine, so that the single needle cylinder hosiery machine can knit single-layer cuff socks with double-needle effect, thereby greatly improving the market circulation degree of the single-layer cuff socks.

The invention discloses a cell needle knife with a medicine channel, and relates to the technical field of needle knives, the cell needle knife comprises an outer liquid injection needle tube, the bottom end of the outer liquid injection needle tube is connected with a cutting edge, the inner side of the cutting edge is provided with a liquid outlet groove, and the outer side of the top end of the outer liquid injection needle tube is sleeved with a holding handle; the inner side of the outer liquid injection needle tube is provided with an inner liquid injection needle tube, the bottom of the inner side of the outer liquid injection needle tube is provided with a material distribution cavity, the inner side of the material distribution cavity is embedded with a separation ring, the separation ring and the outer liquid injection needle tube form a material storage cavity, and the inner side of the separation ring is provided with a clamping groove. The preposed cutting edge is inserted into a diseased part, the diseased part is released and treated through the cutting edge, and normal saline can be replaced with medicine if the medicine needs to be injected, so that the medicine injection treatment is accurately performed on the diseased part, the steps are simple and convenient, the accuracy of medicine injection is further ensured, and the operation efficiency is improved.

The application provides a small needle knife control method and system based on motion sensing data, and relates to the technical field of small needle knife control. The method comprises the following steps: acquiring patient data, and constructing a digital patient model according to the patient data; determining an operation forbidden area according to the digital patient model; acquiring operator historical data; acquiring a three-dimensional space coordinate of a knife tip through an optical positioning camera arranged above a surgical area; acquiring handle motion sensing data; determining a first unit displacement tissue impedance change rate and a second unit displacement tissue impedance change rate; determining a safety boundary warning distance according to the operator historical data, the operation forbidden area and the three-dimensional space coordinate of the knife tip; determining an operation stability coefficient; and performing small needle knife control according to the first unit displacement tissue impedance change rate, the second unit displacement tissue impedance change rate, the safety boundary warning distance and the operation stability coefficient. According to the application, the accuracy of small needle knife control can be improved.

The invention discloses a hollow visual precise temperature control needle knife which comprises a needle knife holding part and a needle body connecting sleeve fixedly connected with the front end of the needle knife holding part, the needle body connecting sleeve is connected with a hollow needle tube, and a treatment function module and an observation function module are integrally arranged on the tube wall of the hollow needle tube; the treatment function module comprises a heating unit which is arranged outside the hollow needle tube and is used for heating the front end of the hollow needle tube, and a fluid channel which is arranged inside the hollow needle tube and is used for conveying a medium; the observation function module comprises a lighting unit arranged in the front end of the hollow needle tube and an image acquisition unit used for acquiring front end images; through integration of precise temperature control, integrated visual guidance and multifunctional auxiliary treatment functions, precise positioning, safe temperature control and multifunctional auxiliary core requirements of deep tissue treatment are synchronously met, the clinical curative effect is improved, and the risk of complications is reduced.

1. The name of the design product: Chinese medicine water needle knife. 2. The use of the design product: treating the oral corner pouch and facial fat or foreign matter accumulation, etc. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective drawing.

The invention relates to the technical field of medical instruments, in particular to a disposable stenosing tenosynovitis treatment handheld device which comprises a handle shell and a cutting assembly, and the cutting assembly comprises a needle knife arranged at the front end of the handle shell and a sliding handle installed in the handle shell in a sliding mode. The key point is that the multi-mode feedback system is arranged in the handle shell; the multi-mode feedback system comprises a trigger and energy release module which is triggered in response to the completion action of the cutting assembly; the transmission module is driven by the triggering and energy releasing module; the visual feedback module is driven by the transmission module; by means of a pure mechanical structure, double feedback of visual'color indication block popping up 'and auditory'clear onefly' is synchronously provided at the moment when cutting is completed, dependence of a doctor on single touch'falling sense 'is greatly reduced, and the success rate and safety of an operation are improved.

The protective type directional cutting small needle knife adopting the nano DLC coating comprises a small needle knife body and a protective shell, a movable plate, an inner spline sleeve and a spline shaft are arranged in the protective shell, and the small needle knife body is coaxially and fixedly connected with the spline shaft; an adjusting mechanism is arranged on the protective shell, a movable plate is driven through spiral transmission to drive the small needle knife body to move telescopically, and position locking is achieved in cooperation with a locking block; an auxiliary mechanism is arranged on the internal thread sleeve and drives the spline shaft to do axial reciprocating motion, and the automatic needling function is achieved; a sealing mechanism is arranged at the front end of the protective shell, air is conveyed to the air bag through the piston rod and the cylindrical shell, and the air bag is controlled to expand and shrink to seal the through hole of the conical shell. Disease transmission caused by the fact that the small needle knife body scratches medical staff after use is effectively avoided, and operation safety and operation convenience are improved.

The application provides a needle knife mirror dynamic approach planning method and system, relates to the needle knife mirror approach planning technical field, and has the technical scheme as follows: real-time image data of a joint cavity is acquired; the real-time image data is matched and analyzed with preoperative image data, changes of anatomical structures in the joint cavity are identified; according to the identified changes of anatomical structures 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 and a preoperatively set approach path, real-time path adjustment is performed, and an optimized needle knife mirror safe approach path is generated; the real-time image data, the updated anatomical partition information and the optimized needle knife mirror safe approach path are superimposed and displayed, so as to guide a doctor to operate. The needle knife mirror dynamic approach planning method and system provided by the application can adapt to the dynamic changes of anatomical structures in the joint cavity during an operation, and has the advantages that the safe operation of surgical instruments is ensured.

The invention belongs to the technical field of medical drainage surgical instruments, and discloses a gear-adjustable skin expanding needle knife special for drainage, which comprises a knife handle, a knife bar, a gear adjusting assembly and a limiting mark, a hollow cavity is formed in the knife handle, and a positioning groove matched with the gear adjusting assembly is formed in the knife handle; a positioning groove is formed in the knife handle, one end of the knife rod is movably connected with the knife handle, a skin expanding knife head is fixed to the other end of the knife rod, the gear adjusting assembly is arranged in the hollow cavity and comprises an adjusting button, an elastic clamping block and a reset spring, and the adjusting button penetrates through the positioning groove. The skin expanding caliber can be rapidly switched through the gear adjusting assembly, a plurality of special skin expanding needle knives do not need to be prepared for drainage tubes of different specifications, the reserve amount of clinical instruments is greatly reduced, and the medical cost is reduced; meanwhile, operation interruption caused by frequent instrument replacement is avoided, and drainage operation efficiency is improved.

The invention discloses an acupuncture robot acupoint positioning system based on visual identification and mechanical arm cooperation. The system comprises an image acquisition module, an image preprocessing module, an acupoint identification module, a mechanical arm control module, a data storage and optimization module and a doctor end interaction module. Image features are extracted through high-speed image acquisition and an efficient image preprocessing algorithm; a YOLO algorithm carried in an embedded system realizes the recognition of key nodes of a human body, further determines the position of an acupuncture point based on cun measurement calculation, and improves the recognition accuracy through the comparison of multiple frames of images; the mechanical arm moves to the position above the acupuncture point to execute operations such as disinfection and needle-knife operation; a doctor can perform real-time monitoring and intervention through the control panel, and the system also stores diagnosis and treatment data to a cloud end and optimizes an algorithm regularly. The problems that traditional acupuncture point positioning is low in precision, poor in efficiency, insufficient in adaptability and the like are effectively solved, the precision, efficiency and stability of acupuncture diagnosis and treatment are remarkably improved, and the method has wide application prospects in traditional Chinese medicine clinical treatment, first aid and other scenes.

The present invention relates to the technical field of medical instruments. Disclosed is a double cannula knife great saphenous vein harvesting device, comprising a handle, a cannula knife, and a pro

The telescopic arc-shaped needle knife comprises a bendable needle core and a needle sheath, the bendable needle core comprises a needle stem, an elastic bending portion is formed at the lower end of the needle stem, a needle blade is arranged at the lower end of the elastic bending portion, the bendable needle core is inserted into the needle sheath in a sliding mode, and when a deformation point on the elastic bending portion is located in the needle sheath, the needle blade is inserted into the needle sheath. The bendable needle core is matched with the needle sheath, during use, after an operation point is selected, the first handle is held by hand, a needle is vertically inserted, at the moment, the deformation point on the elastic bending part is located in the needle sheath, and the elastic bending part is in a bent state when the deformation point on the elastic bending part extends out of the needle sheath. After the needle reaches the bone or fascia position, the needle sheath is held by a hand, then the first handle is pushed forwards, the deformation point is pushed out of the needle sheath, then the elastic bent part is in a bent state, tissue shielded by the bone or fascia can be released, and the focus can be cured more easily.

The utility model relates to a detachable medical navigation needle knife, and belongs to the technical field of medical instruments, in particular to the technical field of surgical needle knives. According to the medical handheld device, the ejection piece is arranged on the needle knife handle of the needle knife module and matched with the sensor of the sensor module, so that the medical handheld device can measure pressure in real time after the needle knife is in contact with the needle knife and is stressed, the medical handheld device can be used only by pinching the needle knife shell with fingers, and the acupuncture pressure change of the needle knife can be felt in the operation process; the control accuracy of the acupuncture depth is improved, the hand space is optimized, and the burden during an operation is reduced; due to the fact that the gap is reserved between the ejection piece and the contact end of the pull pressure sensor in the natural state of the elastic piece, the situation that detection data are wrong due to the fact that the needle knife is affected by the environment in the natural state is avoided, detachable convenient arrangement is achieved through clamping connection of the sensor shell and the needle knife shell, and the needle knife is convenient to use. And the position can be fixed through the locking push key.