555 results about "Needle holder" patented technology

An automated system that can be used for prosthetic heart valve manufacturing or suturing procedures. The system can include a first automated fixture that includes an articulating arm and a target device holder. The system can also include one or more additional automated fixtures, which can be configured as one or more suturing arms that include another articulating arm and a needle holder. The first automated fixture can be configured to rotate a target device held by the holder to allow the one or more additional automated fixtures to perform operations such as form sutures on the target device without intervention of a human operator. The system can include a display system configured to display status information of a suturing procedure.

The invention discloses a hemodialysis puncture needle fixator, and relates to the technical field of medical instruments. The hemodialysis puncture needle fixator comprises a connecting rod, a puncture needle placing plate, a base, a sliding block and a fastening screw, the base is used for being placed in front of a puncture position of a patient, and sliding grooves perpendicular to the edges of the front side, the rear side and the right side of the upper surface of the base are formed in the front side, the rear side and the right side of the upper surface of the base; the puncture needle placing plate is arranged on the upper surface of the base, is positioned among the three chutes, and is parallel to the front side edge and the rear side edge of the upper surface of the base; the number of the connecting rods and the number of the sliding blocks are both three, connecting lugs are arranged on the upper surfaces of the sliding blocks in an upward protruding mode, and the three sliding blocks are arranged in three sliding grooves in the base in a sliding mode. The middle areas of the front side wall and the rear side wall of the puncture needle containing plate are perpendicularly and rotationally connected with rotating shafts, and connecting lugs are arranged at the ends, opposite to the ends connected to the puncture needle containing plate, of the rotating shafts. According to the hemodialysis puncture needle fixator, the fixing angle of the puncture needle can be changed at will, and high efficiency of dialysis treatment is effectively guaranteed.

The present invention provides a blood collection device, wherein a blood collection needle is arranged at the first end of a needle holder, and the second end of the needle holder contacts a piston via an elastic device. The needle holder is provided with a stop arm. When the needle holder moves along the first direction of the launch tube, the stop arm and the blocking member in the launch tube change from the first state to the second state, thereby controlling the blood collection needle to be excited along the first direction. Under the control of the elastic device, the blood collection needle moves a preset distance in the second direction, so that the blood collection needle cannot contact the skin again after a single excitation. The present invention also provides a method for using the blood collection device. The present invention adopts a technology that makes the blood collection needle ineffective after a single excitation, thereby avoiding the problem of cross infection caused by multiple punctures.

The utility model relates to the technical field of dies, and discloses a core inserting die which comprises a die body, and a die cavity is formed in the die body. One end of the pin block is connected with a guide pin extending into the die cavity, and one end, far away from the pin block, of the guide pin extends out of the die cavity; the needle seat is arranged on the other side, opposite to the needle inserting block, of the die body and comprises a first needle seat body and a second needle seat body, the first needle seat body comprises a first guide needle containing groove formed towards the second needle seat body, and the second needle seat body comprises a second guide needle containing groove formed opposite to the first guide needle containing groove; and the first guide pin accommodating groove and the second guide pin accommodating groove form a first guide hole for accommodating a guide pin. The needle seat is designed to be of a split structure composed of the first needle seat and the second needle seat, so that the end, extending out of the mold cavity, of the guide needle is contained in the first guide hole in the forming process, the guide needle can be wrapped more tightly, the gap between the guide needle and the first guide hole is reduced, injection materials are effectively prevented from flowing into the first guide hole, and the injection efficiency is improved. Therefore, the MT insertion core is ensured to have excellent location degree.

The invention provides a central venous catheter assembly, which comprises a puncture needle, a central venous catheter, a central venous catheter and a central venous catheter, the puncture needle is sleeved with the catheter, and the needle tip of the puncture needle is exposed out of the front end of the catheter; the blood stop valve is arranged at the rear end of the catheter, the blood stop valve is connected with a branch pipe, the branch pipe is provided with a Robert clamp, and a three-way connector is arranged at the tail end of the branch pipe; the standard Luer taper is connected to the tail end of the puncture needle, the standard Luer taper is connected with the blood stop valve, and the standard Luer taper is connected with an external injector or a plug; the needle holder is arranged on the catheter and used for clamping the catheter in the catheter pushing process; and the sensor module is arranged on the catheter and is used for monitoring the physical sign data, processing the physical sign data, comparing the processed physical sign data with a standard threshold value, and generating a warning signal when a preset threshold value is reached. Whether the catheter displaces or leaks liquid or not can be monitored in real time, and therefore a clinician can find complications caused by catheter displacement as soon as possible.

The utility model provides an automatic smearing device for a microorganism sample, and belongs to the technical field of smearing devices. The automatic smear device for the microorganism samples comprises a machine frame provided with a flat plate, and the flat plate is provided with a sample cup conveying channel, an oscillation position, an uncovering positioning sleeve, an inoculation needle base, an infrared sterilizer, a glass slide containing box, a glass slide collecting frame and a smear position. A sample treatment module for transferring a sample cup, a cover opening module for opening and closing a cover and a glass slide treatment module for transferring a glass slide are arranged on the rack, and an inoculating needle and a smear pen which can be transferred by the sample treatment module are placed on the inoculating needle seat; and the smear pen is provided with a self-adaptive smear head matched with the upper surface of the glass slide at the smear position. Due to the fact that the smear pen is provided with the self-adaptive smear head, biological samples on the glass slide can be evenly smeared under the condition that the glass slide is not placed flatly, and the smear effect is good.

This article is a biological tissue sampling instrument attached to a mammography machine equipped with an X-ray irradiation unit and an examination table. The biological tissue sampling instrument has a needle holder that holds a needle for puncturing the breast and collecting biological tissue inside the breast. As shown in [Reference Diagram Showing the Installation State of This Article], the needle in the needle holder of this article is fixed in a horizontal position where the axial direction of the needle is parallel to the top surface of the examination table. As shown in [Perspective View 2], the slide holding part holds the needle holder and can slide it with respect to the slide axis. By this sliding, the needle can be punctured into the breast placed on the examination table from the lateral direction. Also, as shown in [Perspective View 2] and [Perspective View 3], the needle holder can be attached by rotating it in the horizontal plane with respect to the needle holder attachment part. Thereby, the direction of the needle can be changed. Further, the biological tissue sampling instrument has a slider base attached and fixed to the mammography machine. As shown in [Perspective View 3] and [Perspective View 4], the arm, the slide axis, and the slide holding part can be attached by rotating 180° with respect to the slider base. The needle holder attachment part can be replaced on the lower side of the slide holding part rotated 180°. Thereby, the left-right position of this article with respect to the examination table can be changed. In addition, in order to grasp the position of the needle, graduations may be provided on the scale part integrally formed with the slide axis. As shown in [Reference Perspective View Showing the Slide Axis and the Slide Holding Part], a guideline for grasping the position of the slide holding part with respect to the scale part is provided on the slide holding part.

The present invention discloses a traditional Chinese medicine microneedle positioning negative pressure desilting device and method for treating vascular stasis, which relates to the field of medical equipment technology. The device comprises a fixing base and a negative pressure cup, wherein the negative pressure cup is detachably mounted on the fixing base, and the fixing base is provided with two vacuum pumps for communicating with the negative pressure cup. The negative pressure cup comprises an outer cup, an inner cup, and a needle holder. The outer cup is sleeved on the outside of the inner cup and is opened downward. A first chamber is formed between the outer cup and the inner cup, and a second chamber is formed inside the inner cup. A cushion is provided between the outer cup and the inner cup port. The needle holder is located above the negative pressure cup, and a microneedle body is provided inside the needle holder. The microneedle body is driven downward to extend and retract by a telescopic mechanism. An outer connecting pipe and an inner connecting pipe are provided above the side walls of the outer cup and the inner cup, respectively, which are connected to the interface ends of the two vacuum pumps. The present invention can significantly reduce the incidence of pain and bruises in patients, improve the efficiency of desilting and the safety of use, and shorten the medical operation time, thus having significant clinical and industrial value.

Safe insulin needle assembly includes protection sheath, needle, safety protection sleeve, pressure seat and needle holder. The needle is arranged on the central axis of the needle holder. The pressure seat is sheathed over the upper portion of the needle holder. The safety protection sleeve is sheathed on the needle holder and the pressure seat as a whole. The upper protection of the safety protection sleeve is connected to and cooperates with the pressure seat. The needle protrudes out of the top end of the upper portion of the safety protection sleeve. The lower portion of the safety protection sleeve is connected to and cooperates with the lower portion of the needle holder. The protection sheath is sheathed on the safety protection sleeve and the needle as a whole. The lower portion of the protection sheath is connected to and cooperates with the lower portion of the safety protection sleeve.

The application provides a suturing mechanism and a biological tissue closure device, the suturing mechanism comprising a base, a needle holder, a suturing needle, a first driving assembly and a second driving assembly; the needle holder is rotationally connected with the base, the first driving assembly is connected with the needle holder and can drive the needle holder to rotate relative to the base to an open state or a closed state; the side of the needle holder away from the base has a boss, the inner contour of the boss matches the outer contour of the suturing needle, and is used for providing a motion track for the suturing needle; at least a part of the second driving assembly can abut against the suturing needle and can self-rotate relative to the axial direction of itself, so as to drive the suturing needle to move along the motion track. The application can realize the closure of various sizes of objects to be closed (for example, a blood vessel wound), and can realize multiple needle penetrating actions through one intervention, so that a better closure effect can be achieved.

A robotic system has a flexible portion adapted for insertion into the gastrointestinal tract and includes a suturing system with a needle holder. An actuator is coupled to the needle holder and is adapted to act on the needle holder arm and needle such that the needle can be repeatedly moved through a path. The actuator is driven by a drive mechanism from the robotic system.

The invention relates to the related technical field of medical needle holders, in particular to an endoscope needle holder with holding and releasing functions and application of the endoscope needle holder in an internal medicine operation. The endoscope needle holder with the holding and releasing functions comprises a grip, a first pipeline and a second pipeline, wherein the first pipeline is fixed to the grip, and the second pipeline is rotationally installed at the end, away from the grip, of the first pipeline. The endoscope needle holder with the holding and releasing functions further comprises a clamping mechanism, the clamping mechanism is installed at the end, away from the first pipeline, of the second pipeline and used for clamping a needle body, and a deflection driving mechanism is further arranged on the grip. The rotation driving mechanism is installed in the first pipeline and connected with the second pipeline, and the rotation driving mechanism is further connected with an elastic shifting mechanism installed on the grip; through mutual cooperation of all the mechanisms, the function of effectively adjusting the angle and the orientation of the needle body is achieved, so that the convenience of surgical operation is improved, and smooth development of the surgery is facilitated.

A handheld ultrasound guiding system for the transcutaneous delivery of a needle into blood vessel that can be used to then deliver a guidewire, the battery powered light-weight device consisting of a phased array ultrasound generator, a transducer probe, a screen, computer processor that is mechanically coupled to a needle holder mounted at an angle to the ultrasound probe, the needle is mounted such that it can be advanced into a target blood vessel that is being visualized real-time by the ultrasound probe.

The invention relates to the technical field of medical equipment, in particular to an analyte sensor implanting device and a needle assisting device thereof. Due to the fact that the guide needle frame is movably installed in the needle assisting device shell, after the guide needle frame drives the guide needle to complete implantation of the analyte sensor, the guide needle rebounds under the action of the needle returning elastic piece, and the needle returning removing structure of the needle assisting device shell can remove the stopping effect of the installation piece stopping structure on the guide needle frame. The needle frame matching part can cross the installation piece stopping structure, the retraction amount of the guide needle is increased, the hand of a user is not prone to being pricked after needle assisting is completed, and the problem that after needle assisting is completed, an operator is prone to being pricked when the user presses a needle assisting device is solved.

The utility model discloses a sewing mechanism for sewing a zipper and cutting a base fabric. The sewing mechanism comprises a needle plate, wherein the needle plate is provided with a containing groove used for containing and guiding a zipper head to move transversely and two containing holes formed in the front side and the rear side of the containing groove; the upper end of the cloth feeding frame is provided with two cloth feeding blocks, the tops of the cloth feeding blocks are provided with cloth feeding teeth, and the two cloth feeding blocks correspondingly extend into the two containing holes; the first presser foot frame is provided with two inner presser feet, and the two inner presser feet are correspondingly arranged above the two cloth feeding blocks; two machine needles are mounted on the machine needle seat, and the two machine needles correspond to the first through holes in the two inner presser feet and the second through holes in the two cloth feeding blocks up and down correspondingly; the slotting cutter is arranged above the containing groove and connected with a driving assembly driving the slotting cutter to move up and down, and when the driving assembly drives the slotting cutter to move downwards, the slotting cutter can stretch into the containing groove. According to the technical scheme, the zipper head does not need to be taken down when the zipper and the base cloth are sewn, the sewing speed of the base cloth and the zipper is increased, and the processing efficiency is improved.

The present invention provides an indwelling needle fixator for pediatric care, which relates to the technical field of medical equipment, comprising: a fixed wrist ring, wherein five inflatable bags are arranged on the inner side of the fixed wrist ring; a support frame plate is arranged on one side of the fixed wrist ring; a fixed hand strap is arranged on the support frame plate; and two positioning frames are arranged on the top of the support frame plate, and the inflatable bags are inflated by using the inflation port, and the tightness of the fit between the child's wrist and the inflatable bags and the support ring is ensured by adjusting the inflation amount of the inflatable bags, so as to achieve better fixation requirements, and the pressure on the wrist can be adjusted by the inflatable bags, thereby satisfying the comfort level of the patient, and solving the problem that the existing indwelling needle fixator for pediatric care generally fixes the indwelling needle by a medical strap during use, but the fixing method is not easy to adjust, the fit force on the child's wrist is too large, and the long-term fit with the skin will cause discomfort, and the indwelling needle will be offset during the child's activities, which is likely to cause some safety hazards.

An automated system that can be used for prosthetic heart valve manufacturing or suturing procedures. The system includes automated fixtures that maneuver a needle and a target device. The automated fixtures can be suturing arms, target device holders, needle transfer fixtures, and / or needle holders. The automated fixtures can rotate a target device held by the holder to allow one or more additional automated fixtures to perform operations such as form sutures on the target device without intervention of a human operator. The system can include a display system configured to display status information of a suturing procedure.

The present invention relates to the field of surgical technology, and specifically to a rotatable laparoscope needle holder, comprising a fixed cylinder, a clamping plate, an operating device, and a transmission device, wherein a rotating cylinder is provided at the front side of the fixed cylinder; two mounting plates are provided at the front side of the rotating cylinder; a mounting gap is formed between the two mounting plates; a rotating shaft is fixed in the mounting gap; a ring groove is provided on the clamping plate; an elastic sliding ring is rotatably installed in the ring groove; a plurality of hard clamping pieces are evenly distributed on the sliding ring; when the operating device drives the two clamping plates to rotate around the rotating shaft and move away from the reset, the sliding ring is rotated in the ring groove by a preset angle to switch the clamping pieces at the clamping ends of the two clamping plates. The clamping pieces at the clamping ends of the two clamping plates are switched each time the clamping plates are opened, so that the plurality of clamping pieces on the sliding ring are cyclically switched and used, so as to reduce the wear of the clamping pieces at the clamping ends of the two clamping plates for clamping the needle, and extend the service life of the needle holder.

This invention discloses a blood collection device, relating to the field of medical device technology. The blood collection device includes: a protective shell, the interior of which is hollow to form a receiving chamber; a first opening at one end of the protective shell communicating with the receiving chamber; a second opening on the side wall of the protective shell near the first opening, also communicating with the receiving chamber, and a pressing part at the second opening; a blood collection assembly including: a needle holder, connected to the inner wall of the receiving chamber away from the first opening via an elastic element; a trigger part on the side wall of the needle holder; a blood collection needle disposed on the needle holder with its tip adjacent to the first opening; when the pressing part pushes the trigger part to completely separate from the side wall of the second opening, the accumulated elastic force of the elastic element pushes the tip of the blood collection needle out of the first opening to complete the blood collection operation; when the elastic element returns to its natural state through its own force, the blood collection needle is retracted into the receiving chamber. This reduces pain and the risk of accidental needle pricks, improving the safety and reliability of the blood collection device.

A vein puncture needle is arranged at one end of a needle seat, a bottle inserting end puncture needle is arranged at the other end of the needle seat, a needle tip of the bottle inserting end puncture needle is bent towards the axis direction of the needle tip, a rubber sleeve is sleeved outside the bottle inserting end puncture needle, and a vein puncture needle cap is sleeved outside the vein puncture needle. And an intubation needle cap is sleeved outside the bottle-inserting end puncture needle and the rubber sleeve. The puncture needle has the advantages that the protective rubber sleeve is independently arranged outside the puncture needle at the bottle inserting end, the protective caps are independently arranged outside the vein puncture needle and the puncture needle at the bottle inserting end, the protective caps are used for protecting the sterilized and disinfected double-end needle tube from being polluted, the needle point of the puncture needle at the bottle inserting end is designed to be of an inwards-bent structure, and the puncture needle is convenient to use. In the puncture process of the bottle inserting end, the needle point of the puncture needle at the bottle inserting end can be prevented from penetrating out of the side face of the rubber sleeve to cause blood leakage.

The utility model relates to a temporal muscle suturing and fixing device for neurosurgery, which is characterized in that at least one suturing line is connected onto a screw, and the other end of each suturing line is connected with a suturing needle. The device has the beneficial effects that the screw is directly fixed on the skull; the needle holder is provided with a suture needle to suture temporalis, and the suture needle is removed; the thread on one side of the screw and the thread on the other side of the temporalis can be knotted, fixation after the temporalis is cut open in a neurosurgery operation can be effectively completed, poor fixation of the temporalis is avoided, temporalis atrophy of a patient after an operation is avoided, psychological stress brought to the patient due to unattractive appearance caused by amyotrophy on one side after the operation is avoided, the design is simple and practical, and practicability is high. The device can be popularized to be used in various intracranial operations.

The needle holder for the acupuncture needle comprises a needle holding head, rotating holes are formed in the upper end and the lower end of the needle holding head, rotating pincers are rotationally connected into the rotating holes through torque springs, and movable pieces are arranged on the surfaces of the rotating pincers. According to the needle holder for the acupuncture needle, through comprehensive arrangement of the elastic abutting mechanism and the handheld mechanism, when the needle holder is used, four fingers penetrate through a handheld handle part, one end of a thumb and a palm hold a grip strength handle, and when the palm is opened, the handheld handle part rotates to drive a limiting piece, an abutting rod and a rotating clamp to move synchronously, so that the rotating clamp is opened and closed to a proper angle; after the acupuncture needle is clamped, the acupuncture needle is tightly held with force, the handheld handle piece rotates reversely and drives the limiting piece, the abutting rod and the rotating clamp to move synchronously, the rotating clamp is matched with the fixed clamp to clamp the acupuncture needle, and therefore the clamping force on the acupuncture needle is increased, and the clamping stability is improved.

Cutlery (10; 210; 220; 230) for injecting fluid into a patient, the cutlery containing: - a needle injection device (14) comprising a needle (36) having a free end (48) adapted to be inserted into a septum (144) of an implantable chamber (18) containing a hollow base body (140), the septum (144) closing the base body (140), and the chamber comprising a conduit (146) for draining fluid from the base body (140); the needle injection device (14) comprising an intermediate tube (38); - an upstream line (13) having an upstream end (30A) intended to be connected to a liquid dispensing device (12) and a downstream end (32A), wherein the downstream end (32A) is detachably connected to the intermediate pipe (38), wherein the needle injection device (14) comprises a needle holder (34), wherein the needle holder (34) includes a core (40) which receives the needle (36) and the downstream end of the intermediate tube (38), and wherein the pressure drop through the upstream conduit (13) between its upstream end (30A) and its downstream end (32A) is higher than 25% of the total pressure drop between the upstream end (30A) of the upstream conduit (13) and the free end (48) of the needle (36) when injecting fluid via the upstream conduit (13) and the needle injection device (14), characterized in that the set includes an implantable chamber (18) containing a hollow base body (140), wherein the septum (144) closes the base body (140), and wherein the chamber has a conduit (146) for emptying fluid from the base body (140), wherein the pressure drop through the needle injection device (14) is less than four times the pressure drop through the chamber (18) when the needle (36) is inserted into the chamber (18).

The utility model discloses a multi-angle suture needle holder for a pleuroperitoneoscope, which relates to the technical field of medical instruments, solves the technical problem that an existing device is not easy to operate by a single hand and is inconvenient to use, and comprises a first handpiece, a second handpiece, a first needle holding rod, a second needle holding rod and a first needle holding clamp, the first needle holding rod is in sliding connection with the second needle holding rod, one end of the first handpiece and one end of the second handpiece are hinged to one end of the first needle holding rod and one end of the second needle holding rod, the other end of the first needle holding rod is connected with a first needle holding clamp, the other end of the second needle holding rod is connected with a second needle holding clamp, and the lower end of the first needle holding clamp is hinged to the upper end of the second needle holding clamp. The single-hand needle holding device has the advantages that the single-hand needle holding device can be operated by one hand, and the single-hand needle holding device is convenient to use and the like.

The utility model discloses a flying probe testing machine four-wire tool bit needle seat assembly, which relates to the field of tool bit needle seats and comprises an assembly body, a connecting frame is mounted at one end of the assembly body, a pressure sensor is arranged in an inner cavity of the assembly body, a photoelectric adjusting plate is mounted on the side edge of the assembly body, and a sliding block is mounted at one end of the photoelectric adjusting plate. A reinforcing plate is installed on the outer wall of the sliding block, a first swing seat and a second swing seat are symmetrically installed on the two sides of the other end of the assembly body, blades are symmetrically installed on the tops of the first swing seat and the second swing seat, and a first baffle and a second baffle are symmetrically installed on the two sides of the bottom of the outer wall of the assembly body. According to the four-wire tool bit needle seat assembly of the flying probe testing machine, the pressure between the blade and the printed circuit board can be measured through the arranged pressure sensor, the printed circuit boards can be contacted more tightly during actual detection work, and the precision of test data can be effectively improved.

The utility model relates to the technical field of biological experiment equipment, in particular to an adjustable needle holder which comprises a sliding table, a control mechanism and a clamping mechanism fixed on the sliding table. The clamping mechanism comprises a fixed block fixed to the top of the sliding table, a sliding hole is formed in the fixed block, a sliding block is vertically connected into the sliding hole in a sliding mode, a groove is formed in the sliding block, an elastic piece is fixed into the groove, a ball is arranged above the elastic piece and movably connected with the sliding block, the elastic piece can lock the moving state of the ball, and a connecting rod is fixed to the ball. A clamping ring is fixed at the upper end of the connecting rod; the control mechanism comprises a control rod, an oil groove is formed in the top of the control rod and communicated with the sliding hole through a hose, a plug is fixed to the top of the oil groove, a threaded hole is formed in the center of the plug, a stud is arranged in the threaded hole in a matched mode, and a pressing head is fixed to the bottom of the stud and located in the oil groove. According to the device, the fixing position of the microneedle can be quickly adjusted in multiple directions, and the operation difficulty of experimenters is effectively reduced.

The invention belongs to the technical field of medical equipment, and particularly relates to a blood taking needle assembling system which comprises a machine base and further comprises a feeding device used for conveying clamp tools and a plurality of clamp tools which are provided with a plurality of clamping positions used for assembling blood taking needles. The grab handle mounting device is used for clamping the grab handle in the clamping position of the clamp tool; the catheter mounting device penetrates a catheter into the grab handle; the code spraying calibration device is used for spraying and printing codes at the two ends of the guide pipe; the flow stopping clamp mounting device is used for mounting a flow stopping clamp; the puncture needle seat mounting device is used for adhering a puncture needle seat; the needle core mounting device is used for adhering the needle core to the second tube end of the catheter; the anti-blocking detection device is used for blowing air to the guide pipe for detection; the spring mounting device is used for mounting a spring; the needle mounting device is used for mounting a puncture needle or a threaded puncture needle; the butterfly wing mounting device is used for mounting butterfly wings; the accessory mounting device is used for mounting a rear cover or a needle holder; and the crimping device is used for crimping the butterfly wing panel and the grab handle.

A surgical instrument is connectable to a bone anchor insertion device having a drive shaft that defines a coaxial channel for receiving a needle therethrough. The instrument includes a handle portion configured to be coupled to the drive shaft in a rotationally fixed manner to transmit torque to the drive shaft, a needle holder configured to hold a needle and movable axially relative to the handle portion, an actuator rotatable relative to the handle portion, and a transmission member connectable to the needle holder and movable axially relative to the actuator and comprising a first advancement surface engageable with a second advancement surface of the handle portion to convert rotational movement of the actuator into axial movement of the needle holder relative to the handle portion for axially advancing and retracting a needle held by the needle holder relative to the handle portion.

Method for producing and displaying 3D ultrasound images, needle insertion method using it and installation for their implementation The invention relates to an assisted and interactive method for producing and displaying 3D ultrasound images, by controlled acquisition and processing of 2D images acquired by means of a 2D ultrasound probe (1) which can be moved over a living subject (S) by a robotic arm (2), or by a practitioner with the assistance of a robotic arm (2), in particular before and during an operation of inserting a needle (3) into said subject (S), this operation being carried out for example by means of or with the assistance of another robotic arm (4) equipped with a needle holder (8).This method is used during an insertion planning phase, during a replanning phase just before insertion and during insertion, and achieves the display of relevant volumes adapted to the different phases showing the needle trajectory (3), the fragile structures (OVT) and the target (C). Figure to be published with the abstract: Fig. 3.

The invention discloses a puncture needle for improving the safety and isolation effect of artificial ascites puncture. The puncture needle comprises a hose, a rubber plug, a communicating pipe, a needle body, a needle holding handle and a butterfly wing fixator. The hose is of a venous indwelling needle structure, and the rubber plug is fixedly connected to one end of the hose. The communicating pipe is communicated with the other end of the hose to form a medicine conveying channel. The needle body comprises a steel needle and a soft sleeve wrapping the periphery of the steel needle, the needle holding handle is detachably connected with the needle body, and an isolation plug is arranged in the needle holding handle. And the isolation plug is pulled out together with the steel needle when the needle holding handle is pulled out so as to cover and protect the steel needle. The butterfly wing fixator is arranged at the joint of the needle holding handle and the needle body and comprises a butterfly wing piece and a hydrophilic gel pad fixed to the contact face of the butterfly wing piece and the human skin. The puncture safety in liver cancer ablation treatment is remarkably improved, the risks of mistaken puncture and inaccurate puncture depth are reduced, damage to surrounding important organs and blood vessels is reduced, and the safety and effectiveness of treatment are improved.