13 results about "Lumbar puncture needle" patented technology

This utility model discloses a lumbar puncture needle with monitoring function, comprising: a needle body, with a puncture needle main body internally connected to the needle body. The puncture needle main body is used to detect puncture depth and monitor cerebrospinal fluid pressure. The puncture needle main body includes an outer needle and an inner needle, with the inner needle located inside the outer needle. A gap is reserved between the outer and inner needles. A signal receiving mechanism is provided at the top of the outer needle. Both the outer and inner needles are electrically connected to the signal receiving mechanism via a point-to-line connection. This utility model provides a lumbar puncture needle with monitoring function, consisting of a system and a puncture needle main body. It can issue an alarm when the puncture needle tip contacts the cerebrospinal fluid in the subarachnoid space of the lumbar spine, and can monitor the cerebrospinal fluid pressure in real time during cerebrospinal fluid collection. Through precise puncture depth feedback and real-time cerebrospinal fluid pressure monitoring, doctors can more accurately locate the puncture point, reduce surgical errors, and improve the success rate of surgery. Real-time monitoring of cerebrospinal fluid pressure helps to detect abnormal intracranial pressure in a timely manner, prevent serious complications such as brain herniation, and ensure patient safety.

The utility model relates to a lumbar puncture needle which comprises a needle tube, a needle core, a connecting piece detachably connected with the needle tube, a pressure sensor arranged in the connecting piece and an end cover connected with the connecting piece, the connecting piece is arranged at one end of the needle tube and provided with a channel communicated with an inner cavity of the needle tube, and the needle core is inserted into the needle tube through the channel. The pressure sensor is used for detecting pressure of liquid in the channel, and the end cover is used for blocking the end of the channel and further blocking the liquid. The pressure sensor is arranged in the connecting piece, meanwhile, the end cover is arranged to block the channel, automatic pressure measurement of liquid in the needle tube is achieved, the measurement precision is higher, measurement is more convenient, meanwhile, the needle tube is detachably connected with the connecting piece, after use is finished, the needle tube can be detached, the connecting piece is cleaned and disinfected and then reused, the use cost is reduced, and the practicability is high. Meanwhile, needle tubes and needle cores of different specifications can be installed on the connecting piece, and more operation requirements are met.

This invention discloses a disposable closed-loop lumbar puncture pressure measurement and sampling integrated device and its pressure measurement method. The device includes: a first Luer interface connected to a lumbar puncture needle or lumbar drainage catheter, a second Luer interface connected to a sampling container, and a valve assembly disposed between the two interfaces. The valve assembly has a pressure measurement path, a sampling path, and a closing path, and can achieve multi-position switching through a stopcock or slide valve. The pressure measurement path is connected to a pressure indicator component, which transmits pressure through a diaphragm coupled to the cerebrospinal fluid (CSF) but is not directly connected to the CSF. The pressure indicator component can display the CSF pressure within a range of 0-60 cm H2O. The valve assembly preferably has a bubble trapping chamber and / or a flow limiting structure to reduce the influence of air bubbles on the reading and reduce the risk of rapid fluid release due to misoperation. This invention can achieve closed-loop pressure measurement without a long tubing column in the lateral decubitus position, and can complete CSF sampling within the same sterile closed loop, reducing the chance of external contamination, reducing sample waste, and simplifying the operation process.

The invention provides a lumbar puncture training simulator mixing a magnetorheological damper and a voice coil motor. The lumbar puncture training simulator is composed of the magnetorheological damper, the voice coil motor, a linear guide rail, a sliding block, a limiting block, a laser displacement sensor, a puncture holder, a cover plate and a laser displacement sensor support. The magnetorheological damper comprises a cylinder barrel, an end cover, a check ring, an MRD coil, a piston and a piston rod. And a liquid injection hole is formed in the damper cylinder barrel. The magneto-rheological damper and the voice coil motor are arranged in parallel, and under data feedback of the force sensor and the displacement sensor, a piston rod of the magneto-rheological damper and a rotor of the voice coil motor can output corresponding puncture force to the lumbar puncture needle and an operator. In the system, the MRD is responsible for generating passive force feedback, and the VCM generates active force feedback. The combined work of the two actuators forms a magnetoelectric hybrid driving system capable of providing accurate puncture force feedback. The lumbar puncture training device effectively simulates the change of puncture resistance in the lumbar puncture process and can be used as a lumbar puncture training device.

The utility model discloses a kind of needle-in-needle puncture devices for ultrasound imaging enhanced minimally invasive lumbar puncture, the needle-in-needle puncture device includes guide needle, lumbar puncture needle and lumbar puncture auxiliary needle;The guide needle tube is hollow structure;The outer surface of one end of the guide needle tube is equipped with the first coating area of enhanced ultrasound imaging;The lumbar puncture needle includes lumbar puncture needle tube, and the lumbar puncture needle tube is located in the guide needle tube;The inside of the lumbar puncture needle tube is hollow structure;The outer surface of one end of the lumbar puncture needle tube is equipped with the second coating area of enhanced ultrasound imaging;The lumbar puncture auxiliary needle includes needle core, and the needle core is located in the lumbar puncture needle tube, and the needle core structure is compatible with the lumbar puncture needle tube structure.Compared with prior art, the needle-in-needle puncture device for ultrasound imaging enhanced minimally invasive lumbar puncture of the utility model improves the visual effect and operation accuracy under ultrasound guidance in puncture process.

The invention relates to the technical field of lumbar puncture, and provides an adjustable lumbar puncture needle fixing frame which comprises a fixing seat detachably mounted on an operating bed body, and further comprises a moving seat, a lifting seat and a limiting seat, the moving seat is movably arranged on the fixing seat, the lifting seat is rotatably arranged on the moving seat in a liftable manner, and the limiting seat is arranged on the moving seat. A fixing assembly used for fixing the lifting seat is mounted on the moving seat, the limiting seat is movably and rotatably arranged on the lifting seat and used for allowing a puncture needle to penetrate through and limiting the puncture needle, and the auxiliary limiting assembly is mounted on the lifting seat and used for limiting the puncture needle. The auxiliary limiting assembly is tightly attached to the back of the patient to conduct auxiliary positioning on the positions of the lifting base and the puncture needle, the auxiliary limiting assembly comprises a backrest, the backrest is arranged on the limiting base through a telescopic structure, and the backrest is tightly attached to the back of the patient. By means of the technical scheme, the problems that in the prior art, after a needle core is pulled out, a puncture needle is suspended unstably, and the operation time is prolonged are solved.

This disclosure provides a device and a method for combining a lumbar puncture needle and an ultrasonic density detection circuitry to provide an inexpensive and accurate lumbar puncture locator device. The disclosed device senses different tissue densities with different frequency tones and colored light indicators before needle insertion in the patient's lumbar vertebrae region. This invention allows a doctor, a nurse practitioner or a physician assistant to safely do a lumbar puncture in an office environment without the scheduling of the use of the radiology department. This device will allow a timelier diagnosis of infections (such as Lyme disease, bacterial and viral meningitis, herpes, West Nile virus, syphilis), multiple sclerosis, Alzheimer's dementia, tumors, idiopathic intracranial hypertension, subarachnoid hemorrhage, and others.

The invention relates to the technical field of medical auxiliary instruments, in particular to a multifunctional controllable drip-proof lumbar puncture needle set capable of being used for intrathecal injection, which comprises a plastic transparent three-way tube, a closed overflow mechanism is arranged at the side opening end of the plastic transparent three-way tube, and a closed flow rate adjusting valve is arranged in the middle of an external multifunctional short tube. The liquid inlet end of the plastic transparent three-way pipe is in threaded connection with an external thread at one end of the lumbar puncture needle outer sleeve through an internal thread, a liquid leakage prevention mechanism is arranged in the liquid outlet end of the plastic transparent three-way pipe, and a reset spring in a protective shell can stretch out and draw back a guide rod through telescopic adjustment of the reset spring; when the cerebrospinal fluid is discharged, the anti-overflow disc is jacked into the annular open groove along with the pressure of the cerebrospinal fluid, and a gap is formed between the annular open groove and the anti-overflow disc, so that the cerebrospinal fluid can be conveniently discharged.

This utility model relates to a medical device, disclosing a syringe for intrathecal injection, which includes a syringe barrel, a switching element, and a piston. The syringe barrel has at least two spaced-apart storage channels, allowing the syringe to simultaneously store at least two medications. The medication in one of the storage channels is pushed sequentially through a rotating groove, a second opening, an infusion channel, and a first opening to a connector under the action of the piston, and then injected into the patient through a lumbar puncture needle connected to the connector. When another medication is to be injected, the switching element is rotated to connect the second opening with the storage channel containing the other medication, pushing the piston to expel and inject the other medication. Thus, the syringe enables the storage and injection of at least two medications. Compared to syringes that can only store a single medication, this syringe only needs to be connected to the lumbar puncture needle once to complete the injection of at least two medications, improving work efficiency and reducing the possibility of lumbar puncture needle displacement.

The invention discloses a lumbar cistern drainage puncture device and method, and relates to the technical field of medical instruments, and the lumbar cistern drainage puncture device comprises a lumbar puncture needle, an inner guide needle, an outer guide needle and a lumbar cistern needle sheath; the lumbar puncture needle comprises a needle sheath and a detachable needle core; the inner guide needle is a solid hard guide needle, and the outer diameter of the inner guide needle is equal to the outer diameter of a needle core of the lumbar puncture needle; the outer guide pin is a tubular hard guide pin, and the inner diameter of the outer guide pin is equal to the outer diameter of the inner guide pin; and the inner diameter of the lumbar cisterna needle sheath is equal to the outer diameter of the outer guide needle. Repeated puncture caused by instrument size mismatching or channel deviation is avoided, so that disposable puncture catheterization is achieved fundamentally, and operation difficulty and patient trauma are reduced remarkably.

The utility model discloses a flow-adjustable lumbar puncture needle. A flow-adjustable lumbar puncture needle comprises a needle head and a connecting tube and is characterized in that a sleeve is installed in the connecting tube in a threaded mode, the two ends of the sleeve are communicated, a plug is arranged at one end of the sleeve and matched with the needle head, a plurality of through holes are formed in the surface of the sleeve, and a connector is arranged at an opening of the other end of the sleeve. According to the flow-adjustable lumbar puncture needle, the sleeve is arranged to control outflow of cerebrospinal fluid, compared with the prior art, the flow-adjustable lumbar puncture needle can be opened when pressure is measured and samples are collected by controlling outflow of the cerebrospinal fluid, the flow-adjustable lumbar puncture needle is closed in other time, and waste of the cerebrospinal fluid and pain of a patient in treatment are reduced.

A multi-modal data acquisition and hydrocephalus diagnosis method based on CSF circulation is provided. Firstly, after performing a lumbar puncture for the patient, the lumbar puncture needle is connected to a pressure sensor and a micro pump, and then, the intracranial pressure baseline of the patent is collected for 5 min, the micro pump is started, and the patient is infused with normal saline at a rate of 1 cc / min until the patient's intracranial pressure reaches the ICP plateau, during the period, multiple physiological parameters such as intracranial pressure and heart rate are monitored; finally, the collected parameters such as intracranial pressure are substituted into the established physical model of CSF circulation, and the CSF kinetic parameters such as CSF absorption resistance are calculated for auxiliary diagnosis.

The utility model relates to the technical field of medical instruments, in particular to a lumbar anesthesia needle. The outer tube is hollow and tubular, and the far end of the outer tube is provided with a dosing through hole; the inner core is arranged in the outer tube; a limiting module; a through hole is formed in the outer pipe, the inner pipe is installed on the outer pipe and comprises a first module and a second module, the first module and the second module are movably installed through a positioning column, and the friction force between the through hole and the outer pipe is adjusted through the installation gap between the first module and the second module; and a sharp puncture point is arranged on the inner core or the outer tube. The limiting module is arranged on the outer tube and is locked after puncture is in place, the needle body is prevented from further going deep, iatrogenic injury caused by misoperation is reduced, and operation safety is improved.