200 results about "Needle holder" patented technology

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.

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.

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.

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.

The invention discloses a manual non-floating-scratching non-invasive transdermal accurate introduction eyebrow tattooing device and a use method, and belongs to the technical field of beauty tattooing. The device comprises an angle limiting needle holder, a disposable sterile bevel tattooing needle piece, a pigment precise supply assembly and a pressure sensing module, an adjustable angle limiting mechanism and a buffer mechanism are arranged in the angle limiting needle holder, the needle piece is provided with depth scale marks, and the pigment precise supply assembly comprises a flow adjusting valve; the use method comprises the five steps of preoperative preparation, eyebrow shape design, non-drift-scratch accurate introduction, pigment permeation regulation and postoperative repair. The beveled needle sheet is adopted and matched with a non-drifting and scratching method, and through precise control, only an epidermis microchannel is formed, the skin is not scratched, and hair follicles are not damaged; noninvasive transdermal pigment introduction is achieved, lines are natural and smooth, the color retention rate is high, the repairing period is greatly shortened, and the method has the advantages of being noninvasive, safe, accurate, controllable, easy to master by a green hand and efficient in operation and is suitable for wide application and popularization.

The utility model 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. According to the utility model, whether the catheter displaces or leaks liquid can be monitored in real time, so that a clinician can find complications caused by catheter displacement as soon as possible.

The utility model relates to the technical field of electronic injector needles, in particular to an electronic injector needle convenient to connect, which comprises a needle cylinder and a driving mechanism, a piston is arranged in the needle cylinder, a push rod is fixedly connected to the right end of the piston, the left end of the needle cylinder is communicated with a connector, the outer wall of the connector is sleeved with a needle seat, and the left end of the needle seat is communicated with a needle body. The inner wall of the needle seat is fixedly connected with an annular ring; the twisting block is rotated, so that the spherical limiting block enters the groove and upwards extrudes the pressed plate, the needle base and the needle head can be prevented from moving leftwards, due to the arrangement of the annular sealing gasket, the purposes of preventing liquid medicine from leaking and preventing the needle base from being separated are achieved, and the twisting block is reversely rotated to enable the spherical limiting block to be rapidly separated from the interior of the groove. And the connector is in clearance fit with the inner wall of the needle seat, so that the needle seat and the needle head can be easily taken down, and the purpose of avoiding injury to an operator and other personnel when the needle head and the needle seat are pulled out is further achieved.

The invention belongs to the technical field of medical equipment, and particularly relates to anti-jumping needle forceps. In order to solve the problem that in the prior art, needle holding forceps are prone to jumping in the process of adjusting the size of forceps heads, the anti-jumping needle holding forceps are provided and comprise a left rotatable forceps handle, a right rotatable forceps handle, a forceps handle connecting assembly, a pull rod, a movable forceps head and a fixed forceps head. The clamp handle connecting assembly is connected with the pull rod, and the movable left clamp handle and the movable right clamp handle can enable the clamp handle connecting assembly to rotate to generate axial linear motion force on the pull rod in a direct / indirect mode so as to pull the movable clamp head to achieve opening and closing of the clamp head; a pull rod sliding limiting part located on the side, close to the pull rod, of the fixed plier head is arranged, the pull rod is provided with a limiting protrusion, and the limiting protrusion is matched with the pull rod sliding limiting part to enable the pull rod to stably move in the axial direction. The pull rod is prevented from jumping by pressing the outer wall of the pull rod sliding limiting part on the two sides of the limiting protrusion, so that jumping of the forceps head connected with the pull rod is limited, and the stability of adjusting the opening and closing angle of the needle holding forceps head is improved.

The utility model relates to the thread guide lever lock rod mechanism in the field of embroidery machine, including needle holder, needle bar and thread guide lever, be provided with the limiting assembly in needle holder, and the limiting assembly includes lock rod and return piece, be provided with the horizontal first pivot and second pivot in needle holder, a plurality of thread guide levers are installed side by side in the first pivot, and the thread guide lever overturns relative to needle holder with the first pivot as rotation point, a plurality of lock rods are installed side by side in the second pivot, and the lock rod overturns relative to needle holder with the second pivot as rotation point, and the edge of lock rod is provided with the hook, and the surface of thread guide lever is provided with the limiting slot, the hook can be inserted into the limiting slot, and the return piece is set between lock rod and needle holder, and the lock rod overturns towards thread guide lever under the action of return piece, the hook contacts with thread guide lever, and the lock rod in limiting assembly only needs to cover the limiting demand of single thread guide lever, and the length is greatly shortened, avoids the situation that the traditional long limiting strip protrudes equipment main body.

This invention discloses a high-Q dynamic probe for measuring atomic force, comprising a needle holder, a base, a cantilever beam, a needle tip, discrete piezoresistive units, connecting wires, conductive flying wires, and a conductive backing plate. The base and conductive backing plate are located at opposite ends of the needle holder. The cantilever beam extends outward from the base in a direction away from the conductive backing plate. The cantilever beam has a perforated portion. The needle tip is located at the top of the end of the cantilever beam. The discrete piezoresistive units are located at the root of the cantilever beam. The connecting wires are located on the base. The first end of the connecting wire is connected to the discrete piezoresistive units, and the second end of the connecting wire is connected to the conductive backing plate. This high-Q dynamic probe for measuring atomic force has advantages such as improving the yield rate of piezoresistive probes, reducing heat generation, facilitating needle replacement, and increasing measurement sensitivity.

An instrument for use in surgery includes a hollow shaft connectable to a drive shaft of a bone anchor insertion device in a rotationally fixed manner, a needle holder configured to hold a needle and movable axially relative to the hollow shaft, an actuator rotatable relative to the hollow shaft, and a transmission member connectable to the needle holder and movable axially relative to the actuator. The transmission member is positionable around at least part of the hollow shaft and includes a first advancement surface engageable with a second advancement surface of the hollow shaft to convert a rotational movement of the actuator into axial movement of the needle holder relative to the hollow shaft for axially advancing and retracting the needle held by the needle holder.

The utility model provides a kind of probe processing equipment, the probe processing equipment includes a needle holder, a push element and a stop element, the push element and the stop element are located at different heights.The needle holder has an opening, which is configured to secure a probe therein.The push element is disposed on a first bracket positioned on one side of the needle holder, and the stop element is disposed on a second bracket positioned on the other side of the needle holder.During the processing, one end of the push element contacts the probe and applies pressure, thereby causing the probe to bend towards the stop element.

The invention provides a needle assisting device, a sensor is implanted into a target tissue through percussion, and the needle assisting device comprises a supporting piece, a needle guiding piece, a needle guiding piece, a needle guiding piece and a needle guiding piece, and the near end of the needle guiding piece abuts against the target tissue; the first operating piece is fixed on the supporting piece and moves from a first position to a second position by moving relative to the supporting piece in the far and near direction, so that the needle assisting device is switched from a first state to a second state; the second operation piece is arranged on the supporting piece in a sleeving mode and can receive operation to move relative to the supporting piece in the far and near direction so as to trigger the needle assisting device; wherein in the first state, the relative movement between the second operating piece and the supporting piece is limited, and the percussion of the needle assisting device is limited; and in the second state, the relative movement between the second operating piece and the supporting piece is released from limitation, and the percussion operation of the needle assisting device is allowed, so that the problem that the needle assisting device is easily touched by mistake can be solved.

The utility model relates to the technical field of medical instruments, in particular to a surgical suture needle convenient to exert force in thick and tough skin suture. The pressing part is in a straight line shape or a shape similar to a straight line; the fulcrum part is connected to the front end of the pressing part, and the fulcrum part is in a J shape; the force arm part is connected to the front end of the fulcrum part, and the force arm part is in a linear shape or a linear-like shape; and the needle tip is connected to the front end of the force arm part. The surgical suture needle has the advantages that needle holding forceps can be separated, and manual suture can be achieved; force can be conveniently exerted in the process of suturing the thick and tough skin, and compared with a common needle, the needle holder has great advantages in the process of suturing the skin through needle holding forceps.

The utility model provides a kind of medical handheld device and inner ear dosing device;The medical handheld device includes handheld shell and connector at one end of handheld shell;The connector has the through setting connector inner cavity, and handheld shell has the shell inner cavity being communicated with connector inner cavity;The connector is used for the detachable connection with the needle holder of puncture needle, and the connector inner cavity of connector is used for the sealed insertion of duct, so that, operator only needs to insert puncture needle into inner ear by medical handheld device, direct dosing of inner ear can be carried out, there is only one insertion operation in the whole process, effectively simplify operation process, improve operation convenience.

This application relates to the field of machining technology and discloses a jade drilling device, including a drilling mechanism. The drilling mechanism includes: a needle holder; a drill bit, detachably and fixedly connected to the needle holder; a first rotary motor, the drive end of which is connected to the needle holder; a lifting cylinder, the drive end of which is connected to the fixed end of the first rotary motor; and a cooling component, including a fixing member, a water-conducting member, and a water pump. The fixing member is connected to the fixed end of the first rotary motor, and the first rotary motor passes through the fixing member; the water-conducting member is embedded in the fixing member, the outlet end of the water-conducting member protrudes from the fixing member and is opposite to the drill bit; the inlet end of the water-conducting member is connected to the water pump. This application uses a fixing member to keep the water-conducting member and the drill bit always relatively fixed, avoiding the phenomenon of nozzle spray deviation caused by the movement of the drill bit, ensuring that the nozzle is always aligned with the drilling area, without the need for manual adjustment, and the structural design is highly practical.

The sewing machine comprises a needle frame and a table body, a sewing mechanism is arranged at the top of the table body, the needle frame is installed on one side of the sewing mechanism, a fixing groove is formed in the top of the table body, a movable part is installed in the fixing groove, the needle frame is located above the movable part, and the movable part comprises a base and a shuttle hook. The shuttle hook is arranged in the base, one side of the base is in sliding fit and rotating fit with a tooth frame, two sets of teeth are arranged at the top end of the tooth frame, the teeth penetrate through the top of the base and correspond to the needle frame, a transmission mechanism is arranged on one side of the base, and a fixing frame is arranged at the bottom of the table body. Through the arrangement of the first rotating rod and the transmission mechanism, when the sewing mechanism is used for sewing, the first rotating rod can drive the tooth frame to rotate back and forth through hinging, and the transmission mechanism drives the tooth frame to move up and down, so that the tooth frame can drive the two groups of teeth to swing, ascend and descend, the teeth are subjected to cloth feeding and tooth lifting, the structure is reasonable, and the practicability is high. And the condition of matching errors is reduced.

The invention discloses a needle holder for tympanic membrane repair, and relates to the technical field of medical instruments, the needle holder comprises a clamping unit, the clamping unit comprises a first clamping plate and a second clamping plate, the upper surface of the first clamping plate is provided with rounded sawteeth, the lower surface of the second clamping plate is provided with matched sawteeth, the matched sawteeth and the rounded sawteeth are engaged with each other, and the matched sawteeth are matched with the rounded sawteeth; the second clamping plate is used for clamping a suture needle, and a front gear is fixedly arranged at the tail of the second clamping plate; a rack-gear transmission structure is adopted to replace traditional lever transmission, torque is stable in the transmission process and does not change along with angle changes, a doctor exerts force evenly during operation, the clamping force can be accurately controlled, the situation that a suture needle slides off or tympanic membrane tissue is damaged is avoided, and the operation efficiency is improved. According to rack-gear transmission, only one slender rod is needed to be matched with the movable block, the rack and the gear, a cross hinged lever structure is not needed, the occupied space is greatly reduced, the outer diameter of the slender rod can be made to be thinner, and the slender rod can smoothly stretch into the deep position of a narrow ear canal.

The utility model relates to a welding tool which comprises a bearing piece and a butt joint piece, the bearing piece is provided with a containing opening penetrating in the thickness direction of the bearing piece, the bearing piece comprises a first limiting part spaced from the containing opening, and the bearing piece is configured to be arranged on one side of a first welding piece and connected with the first welding piece through the first limiting part; the bearing piece and the first welding piece are relatively static; the butt-joint piece is provided with a connecting hole penetrating in the thickness direction of the butt-joint piece, the butt-joint piece comprises a second limiting part spaced from the connecting hole, and the butt-joint piece is arranged on the side, away from the first welding piece, of the bearing piece and is connected with the bearing piece through the second limiting part, so that the butt-joint piece and the bearing piece are relatively static; the connection hole is configured to allow insertion of the probe. According to the welding tool provided by the embodiment of the utility model, the welding and positioning accuracy of the needle seat can be improved, and the inclination degree of the needle seat is restrained, so that the connection reliability of a welding layer at the bottom of the needle seat is ensured.

The pipetting module comprises a three-dimensional arm, a pipetting needle assembly and a liquid adding and sucking assembly, the three-dimensional arm comprises an X-axis moving supporting assembly, a Y-axis moving assembly and a Z-axis moving assembly, the X-axis moving supporting assembly comprises an X-axis guide rail, a connecting plate and a side plate, the connecting plate and the side plate are connected with the X-axis guide rail in a sliding mode, and the Z-axis moving assembly comprises a Z-axis guide rail, a Y-axis guide rail and a Z-axis guide rail. The Y-axis moving assembly comprises a Y-axis guide rail and a Z-axis bottom plate slidably connected with the Y-axis guide rail, the Z-axis moving assembly comprises a first Z-axis guide rail, a sample needle fixing seat, a second Z-axis guide rail and a reagent needle fixing seat, the pipetting needle assembly comprises a sample needle and a reagent needle which are vertically arranged, and the liquid adding and sucking assembly comprises two nozzles. The pipetting module disclosed by the utility model is simple and compact in structure and high in integration level, can efficiently complete complex pipetting work of immunoblotting detection, can reduce the overall size of an immunoblotting analyzer to a certain extent, and improves the portability.

The present invention provides a puncture device that can securely attach a sensor unit to the surface of a living organism. [Solution] A puncture device comprising a housing, a vertically movable operating body, a sensor unit having an elongated sensor and an attachment portion to be attached to a biological surface, a needle holder integrally holding a puncture needle and allowing the puncture needle to rise from a puncture position housing the sensor to a withdrawal position, a sensor unit holder integrally holding the sensor unit in an initial state, a spring, and an operation restricting portion that restricts the downward movement of the operating body, wherein the sensor unit holder releases the restriction when the housing is pressed against the spring after the puncture needle is inserted into a biological surface and the attachment portion is attached to the biological surface, the operating body engages with the needle holder when pressed against the spring in the released state, and the needle holder rises to the withdrawal position when the pressing operation is released.

The application discloses a laparoscope needle holder with a thread feeding structure, which comprises a clamping rod, the head of the clamping rod is hinged with a clamping head, the clamping head comprises a shell, a first clamping plate, a second clamping plate, a transmission mechanism and a driving wheel, and a pair of driven rotating rods are installed on the second clamping plate. The transmission mechanism, the driven rotating rods and the driving wheel are arranged, so that after the suture needle is clamped, the second pull rope drives the driving wheel to rotate, the driving rotating rod is driven to rotate under the action of the transmission mechanism, and the suture needle is delivered, the suture needle does not need to be repeatedly pulled by the clamping head for suture work on the sutured surface, the knotting of the suture thread when the suture needle is continuously driven to move is prevented, the action of the clamping head in the patient's body is small, and the suture needle is prevented from scratching the tissue in the patient's body when the suture needle is clamped to move.

A needle hub for a drug delivery device includes a needle holder and a needle attached to the needle holder, a needle drive assembly configured to move the needle holder from a retracted position to an insertion position and back to the retracted position, and a pressure interlock comprising an inlet configured to be in fluid communication with a fluid source, an outlet in fluid communication with the needle, and a locking element. The locking element has a first position in which it prevents actuation of the needle drive assembly and a second position in which it permits actuation of the needle drive assembly. The locking element moves from the first position to the second position depending on the pressure within the pressure interlock.

This invention provides a method and apparatus for testing the in vitro puncture performance of a dual-marker positioning puncture needle, relating to the field of material performance testing technology. The testing apparatus includes a testing platform, a pushing mechanism, and a puncture mechanism. A tray is mounted on the surface of the testing platform, and biological tissue for testing is placed on the surface of the tray. A plastic needle holder is provided at the top of the puncture needle body, and a testing sleeve is provided in the middle of the puncture mechanism. This invention efficiently completes the positioning and testing process by moving the puncture needle body and providing a positioning and receiving structure at the bottom, acquiring puncture pressure data and determining whether the needle is bent. This further improves the reliability and effectiveness of the final testing structure, avoids interference from elasticity differences in the biological skin components used for testing, and provides more intuitive and accurate information acquisition after puncture. Furthermore, each testing cycle is short, and the positioning is sufficiently precise.

A method for performing a robotic-assisted orthotopic heart transplant includes forming a working port subareolarly by a mini-thoracotomy at a working intercostal space, forming additional ports for robotic arms, and arranging robotic arms through the ports. A first robotic arm with first forceps extends through a second port lateral to a mid-clavicular line, while second and third robotic arms containing an imaging device and second forceps operate through the working port. A fourth robotic arm with scissors or needle holder extends through a third port proximal to an anterior axillary line. The method includes cannulating for cardiopulmonary bypass, opening the pericardium, cross-clamping the aorta, removing the native heart, and performing sequential anastomoses of the donor heart including the left atrium, pulmonary artery, aorta, inferior vena cava, and superior vena cava.