41 results about "Spinal needles" patented technology

A flow element for use with flexible needles and flexible needle assemblies to minimize flow occlusion within a flexible needle is provided. The flow element is particularly suited for uses with a flexible needle for minimizing incidence of post-dural puncture headache. The flow element includes a body having an internal flow path for conducting a fluid through a flexible needle, and an anti-restriction member. The anti-restriction member includes an elongated body, a proximal end coupled to the body within the internal flow path, and a distal end for disposing at least a portion of the elongated body within a flexible needle. A flexible spinal needle assembly for minimizing flow occlusion through an internal flow path of a flexible needle by unintended kinking that is potentially caused by ligament or muscle layer movements is also provided. In other embodiments, a flexible spinal needle assembly, a flexible spinal needle assembly kit, a method for installing a flexible spinal needle assembly, and a process for producing a flow element are provided.

The present invention is directed toward an improved spinal needle. A needle hub is disposed about a proximate end of a hollow needle. The needle hub side port indicators provide visual and tactual verification by a user of the orientation of the side port on the needle. The needle hub also includes a window with a magnified view. The invention provides a stylet cap disposed about a proximate end of a stylet that freely slides inside the hollow needle and needle hub. The stylet cap forms a pressure fit with the needle hub, and can be engaged in the pressure fit from any axial orientation.

An apparatus is disclosed including: an optical coherence tomographic system; a spinal needle having a needle tip adapted to penetrate tissue; and an optical delivery system adapted to direct probe light from the optical coherence tomographic system onto tissue located in front of the needle tip, collect test light backscattered from the tissue, and transmit the test light to the optical coherence tomographic system. The optical coherence tomographic system is adapted to provide information indicative of one or more properties of the tissue based on the test light.

An epidural space locating device is described, comprising a handle with a proximal end and a distal end; a hollow distal chamber attached to the handle distal end and being provided with a distal connector where a spinal needle is received to be introduced in the patient's body, such that there is a fluid connection between the spinal needle and the distal chamber; the device also comprises a plunger running within the distal chamber from a starting position to a final position when there is a pressure loss within the distal chamber due to the spinal needle has reached the epidural space; the plunger is secured before using the device, which emits a warning signal at the time the epidural space has been reached.

Disclosed herein is a spinal needle for epidural and spinal anesthesia and analgesia. The needle is formed by three main elements: the first one is a fastening member which allows the user to grab the needle with the fingers; the second element is a chamber that receives an amount of cerebrospinal fluid (CSF); and the third element of the spinal needle is a cannula in fluid communication with the chamber and further attached to the fastening member. The chamber is preferably transparent in order to readily detect the presence of CSF inside the needle. In a preferred embodiment, the chamber has a bottom wall that supports the needle in its entirety. The fastening member and the chamber comprise tactile markings with the same orientation as that of the tip of the cannula, to become aware of the direction in which the anesthetic will be supplied.

A flow element (50) for use with flexible needles and flexible needle assemblies (10) to minimize flow occlusion within a flexible needle (15) is provided. The flow element (50) is particularly suited for uses with a flexible needle (15) for minimizing incidence of post-dural puncture headache. The flow element (50) includes a body having an internal flow path for conducting a fluid through a flexible needle, and an anti-restriction member (56). The anti-restriction member (56) includes an elongated body (58), a proximal end (70) coupled to the body within the internal flow path, and a distal end (60) for positioning at least a portion of the elongated body within a flexible needle. A flexible spinal needle assembly (10) for minimizing flow occlusion through an internal flow path of a flexible needle (15) by unintended kinking that is potentially caused by ligament or muscle layer movements is also provided, hi other embodiments, a flexible spinal needle assembly (10), a flexible spinal needle assembly kit, a method for installing a flexible spinal needle assembly, and a process for producing a flow element are provided.

The invention discloses a trestle-type dual-chamber anaesthesia needle, which comprises a fixation clamp which is provided with a screw on which a nut is mounted; the nut is movably connected with a rotating shaft which is connected with a sleeve in which a sleeve lumen is provided; a mandrel is mounted in the sleeve lumen; one end of the mandrel which goes through and extends out from the sleeve is provided with a first gimbal that is connected with a second gimbal by a first connecting rod; the second gimbal is connected with a rzeppa gimbal which is connected with a fixation sleeve in which a needle handle is mounted; an installation pipe is arranged on the fixation sleeve; a neilsbed is mounted on the installation pipe; a dual-chamber combination needle body is mounted on the neilsbed; the needle body is provided with a first chamber and a second chamber; one end of the dual-chamber combination needle body is provided with an up syphon which slantwise runs through, extends out of the neilsbed and is communicated with the second chamber; a spinal needle is mounted at the lower end of the needle handle and is positioned in the first chamber. The trestle-type dual-chamber anaesthesia needle is provided with a trestle which can adjust position flexibly and facilitate doctors to operate taking the trestle as a fulcrum and position and insert needle accurately, thus accurate and quantized needle insertion operation can be realized.

The invention belongs to the technical field of anesthesia puncturing, and particularly relates to a novel disposable subarachnoid space rotation type cerebrospinal fluid collecting, displaying and pressure measuring device. The novel disposable subarachnoid space rotation type cerebrospinal fluid collecting, displaying and pressure measuring device comprises a rotary collecting device and a pressure measuring device; an anesthesia spinal needle is connected with a lumbar puncture needle; the lumbar puncture needle is connected with the rotary collecting device; and the rotary collecting device is connected with the pressure measuring device. The rotary collecting device comprises a connecting end, a collecting tube fixedly connected with the connecting end and a collecting tube located at the lower portion of the collecting tube. The pressure measuring device comprises a pressure measuring tube; a breathable thin film is arranged at one end of the pressure measuring tube, a floating indicator is arranged inside the other end of the pressure measuring tube; the other end of the pressure measuring tube is connected with the collecting pipe; and scale marks are arranged on the inner wall of the pressure measuring tube. The novel disposable subarachnoid space rotation type cerebrospinal fluid collecting, displaying and pressure measuring device has the beneficial effects of being capable of accurately measuring the cerebrospinal fluid pressure and guaranteeing that cerebrospinal fluid does not escape in the pumping process; in addition, the cerebrospinal fluid can be pushed back; operation is simple and convenient; and the industrial production is facilitated.

Echogenic markers can be applied to probes such as medical needles, including radiofrequency cannulae, injection needles, biopsy needles, microwave antennae, and spinal needles, among others. For example, in certain embodiments, the probes may have a distal end, a proximal end, a shaft, and an echogenic feature in the form of one or more indentations on the shaft. In certain embodiments, the probes may have a first echogenic feature in the form of an indentation in a surface of the probe and a second echogenic feature in the form of a roughening of the surface of the probe.

The present invention provides a medical needle assembly which has a removable at will needle hub for a spinal needle, which can be used to access the epidural or subarachnoid space of the spinal cord. This improvement in spinal needle design allows and facilitates the use of the medical needle for the purposeful creation of a subcutaneous tunnel and the placement of a catheter, or drain, or electrical wire lead which extends to an anatomic location remote from the original surgical incision site.

The medical needle assembly has unique features and capabilities: a removable at will needle hub, which not only allows the surgeon to use the epidural/spinal needle initially to access the epidural or subarachnoid space of the spinal cord; but also permits the surgeon to use the same medical needle assembly again as a tunneling instrument. This allows the surgeon to perform the process of subcutaneous tunneling safely and in a manner previously considered to be surgically improbable.

The invention discloses an anesthesia spinal needle with a negative-pressure inner needle core. The anesthesia spinal needle comprises a puncture needle, the negative-pressure inner needle core and a needle lug, wherein the inner needle core is hollow; an elastic film is arranged at the front end of the inner needle core; and a negative-pressure device is arranged at the rear end of the inner needle core. The anesthesia spinal needle has the advantages that the needle core is the negative-pressure needle core and is not required to be unplugged in the whole puncture process, and the inner needle core serves as a negative-pressure tube, so that the anesthesia spinal needle is convenient and efficient; and moreover, ligamentum flavum and the like are not cut off, but are only dissected bluntly, so that injury is reduced, and the lumbago incidence rate of a patient is greatly reduced. By the anesthesia spinal needle, the negative-pressure tube has a good negative-pressure effect regardless of the magnitude of epidural negative pressure of the patient, so that complications of injury of nerve roots or spinal marrow due to continuous needle inserting when negative pressure is deficient are reduced, anesthesia safety is improved, and the patient can be safe in an anesthesia puncture process.

The invention relates to a medical appliance, in particular relating to a puncture needle for lumbar anesthesia and the intraspinal anesthesia puncture device with the puncture needle for lumbar anesthesia. The puncture needle for lumbar anesthesia comprises a needle and a stylet, wherein, the needle comprises a first needle and a first neilsbed which is permanently connected with the first needle; the infusion hole of the needle is arranged on the sidewall of the first needlepoint; as the opening of the infusion hole is more closely to the front end of the first needlepoint, the leakage of liquid medicine out of the subarachnoid cavity is easy to be prevented when the lumbar anesthesia is injected. The intraspinal anesthesia puncture device of the invention comprises an extradural puncture needle and a puncture needle for lumbar anesthesia, wherein, at the matching place of the first neilsbed and the third neilsbed of the puncture needle for lumbar anesthesia a screw thread is arranged With cooperation of the screw thread, the needle for lumbar anesthesia is easy to be fixed and the length of the needle for lumbar anesthesia exceeding the epidural can be accurately adjusted, thus the occurrence of a phenomenon that the needle for lumbar anesthesia can not reach the subarachnoid cavity due to a short length of the needle for lumbar anesthesia is decreased.

The invention provides a modified combined spinal-epidural lumbar spinal needle, which comprises an operating handle, a needle insertion mechanism, a needle insertion controller and a drainage speed regulator, wherein the needle insertion controller cooperates with a fixing through hole of a grab handle; the fixation of an end of the needle insertion mechanism in the fixing through hole is realized; the drainage speed regulator cooperates with a drainage interface of the grab handle; the drainage control of cerebrospinal fluid is realized. A spiral fine tuning principle is utilized for the modified combined spinal-epidural lumbar spinal needle; through cooperatively designing the needle insertion mechanism and the needle insertion controller, the control of needle insertion precision in combined spinal-epidural puncturing operation is realized; meanwhile, through designing corresponding automatic pressure measuring and drainage speed regulating mechanisms, the corresponding pressure measuring and drainage operation is realized; the combined spinal-epidural lumbar spinal needle has the advantages that the needle insertion precision is high, the control operation is realized simply and conveniently, the automatic pressure measurement can be achieved, the drainage speed is flexibly controlled, and the like.

A dual-channel acoustic-guided epidural puncture needle is composed of a pressure-taking device, an epidural puncture needle tube, a spinal needle assembly, a needle seat, and a syringe pump connector. An anesthetic catheter channel is arranged inside a needle wall of the epidural puncture needle tube, the end of the anesthetic catheter channel is provided with a bend needle end, the top of the needle wall is provided with a spinal needle tube channel, the needle seat has a double-channel structure, a spinal needle inlet and an anesthetic catheter inlet at one end of the needle seat respectively communicate with the spinal needle tube channel and the anesthetic catheter channel of the epidural puncture needle tube, the spinal needle assembly is composed of a spinal needle, a positioning sleeve and a needle handle, the spinal needle comprises a spinal needle tube wall and a spinal needle tube cavity, and a connecting tube at an outlet end of the pressure-taking device is connected to the needle seat through a connecting pipe connector. According to the puncture needle, a double-channel entry structure of the anesthetic catheter and the spinal needle is adopted, the operation mode of combined spinal-epidural anesthesia is changed, and the success of the puncture and anesthesia is guaranteed; and the structure of the spinal needle with the positioning sleeve and the structure of the epidural needle tube with a back hole are provided so that a guarantee is provided for correct implementation of spinal anesthesia.

A lumbar puncture positioner is composed of a base, a positioning plate, a flexible belt and a fixing belt. A laser tube, a gravity sensor, a control circuit and a loudspeaker are arranged on the positioning plate. During use, the positioner is fixed to the proper distance above a puncture point, a power source is powered on, a position adjusting knob is adjusted to enable the positioning plate tobe horizontal, it is ensured that a laser beam and the spine line coincide, and an operator feeds a lumbar spinal needle from the puncture point along the laser beam until puncture succeeds. The advantages of being high in locating precision, low in cost and easy to popularize are achieved.

A spinal needle that includes a needle body insertable through tissue to a desired depth within a patient's body, the spinal needle is capable of retaining bodily fluids, including cerebrospinal fluid, and provides a window capable of allowing a user to view the existence or non-existence of bodily fluid retained therein.

The invention relates to a lumbar spinal needle capable of preventing liquid leakage. The lumbar spinal needle comprises a needle tube and a needle core, wherein a notch connected with a piezometer tube or a collecting tube is formed in a needle tail part of the needle tube; a ''T''-shaped pore passage is formed in the needle tail part, comprises a main pore passage penetrated by the needle core and a branched pore passage communicating with the notch and is divided into a main pore passage front-side part, a main pore passage tail-side part and the branched pore passage by taking a junction of the main pore passage and the branched pore passage as a border; the pore diameter of the main pore passage tail-side part is larger than the outer diameter of the needle core, a one-way valve assembling slot is formed in the main pore passage tail-side part, and a silica gel one-way valve is fixedly mounted in the one-way valve assembling slot; and a switch type one-way valve is mounted in thebranched pore passage. According to the lumbar spinal needle, an opening in the tail of the needle tube can be relatively advantageously closed in a paracentesis operation process, and the loss of cerebrospinal fluid in a lumbar spinal paracentesis process can be effectively controlled.

The invention provides a single-cavity two-channel combined spinal-epidural anesthesia integrated puncture needle. The single-cavity two-channel combined spinal-epidural anesthesia integrated puncture needle comprises a base and a needle tube. The needle tube is fixed to the base. The base is provided with channels communicated with the needle tube. The needle tube is hollow, and an epidural catheter and/or an inner cavity through which a lumbar spinal needle penetrates are formed. The external diameter of the lumbar spinal needle ranges from 0.45 mm to 0.55 mm, and the external diameter of the epidural catheter ranges from 0.55 mm to 0.9 mm. By the adoption of the single-cavity two-channel combined spinal-epidural anesthesia integrated puncture needle, epidural anesthesia and lumbar anesthesia can be conducted, and lumbar anesthesia and implantation of the epidural catheter can be conducted at the same time.