WO2006111056A1 - Ensemble effractif pour drainer le liquide cephalorachidien - Google Patents

Ensemble effractif pour drainer le liquide cephalorachidien

Info

Publication number
WO2006111056A1
WO2006111056A1 PCT/CN2005/002316 CN2005002316W WO2006111056A1 WO 2006111056 A1 WO2006111056 A1 WO 2006111056A1 CN 2005002316 W CN2005002316 W CN 2005002316W WO 2006111056 A1 WO2006111056 A1 WO 2006111056A1
Authority
WO
WIPO (PCT)
Prior art keywords
drainage
tube
cerebrospinal fluid
puncture
needle
Prior art date
Application number
PCT/CN2005/002316
Other languages
English (en)
Chinese (zh)
Inventor
Mingli He
Original Assignee
Mingli He
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mingli He filed Critical Mingli He
Publication of WO2006111056A1 publication Critical patent/WO2006111056A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
    • A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
    • A61M27/006—Cerebrospinal drainage; Accessories therefor, e.g. valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters

Definitions

  • a cerebrospinal fluid interventional drainage device A cerebrospinal fluid interventional drainage device
  • the present invention relates to a medical device, and more particularly to a cerebrospinal fluid interventional drainage device. It is mainly used for drainage or dredge of blood clots caused by hemorrhagic cerebrovascular diseases (such as subarachnoid hemorrhage and intraventricular hemorrhage), various meningitis (tuberculous, purulent, fungal and lymphatic choroid plexus). Inflammatory substance contamination or cerebrospinal fluid circulation is blocked, and it can also be used for the treatment of demyelinating diseases of the nervous system.
  • hemorrhagic cerebrovascular diseases such as subarachnoid hemorrhage and intraventricular hemorrhage
  • various meningitis tuberculous, purulent, fungal and lymphatic choroid plexus
  • Inflammatory substance contamination or cerebrospinal fluid circulation is blocked, and it can also be used for the treatment of demyelinating diseases of the nervous system.
  • Subarachnoid hemorrhage and ventricular hemorrhage are common cerebrovascular diseases. It is characterized by sudden headache, seizures, mental disorders or disturbances of consciousness. Blood accumulates in the ventricular system and subarachnoid space, causing cerebrospinal fluid blood staining, ventricle cast, cerebrospinal fluid circulation, acute high intracranial pressure, and even cerebral palsy. Survivors often suffer from normal intracranial pressure hydrocephalus, most cranial neuritis, spinal arachnoiditis, and reabsorption of blood, resulting in cerebral vasospasm, secondary neuronal secondary injury, etc. due to accumulation of blood in the subarachnoid space. Symptoms, leading to serious consequences.
  • Various meningitis are also very common and difficult to treat.
  • Group of major diseases of the central nervous system due to the direct release of various pathogenic bacteria and their inflammatory secretions into the cerebrospinal fluid, not only increase the difficulty of antibacterial treatment, but also cause acute or normal intracranial pressure due to inflammatory clot blocking cerebrospinal fluid circulation Hydrocephalus, leading to serious consequences.
  • lateral ventricle-peritoneal shunt is often used for this pathological state. Because the cerebrospinal fluid circulation cannot be dredged fundamentally, the drainage effect is not good, and complications such as dissociation, tube occlusion, or epilepsy are often present.
  • the technical problem to be solved by the present invention is to address the deficiencies of the prior art, and to provide a cerebrospinal fluid-introducing drainage device for lumbar puncture and ventricle puncture in clinical practice.
  • a cerebrospinal fluid interventional drainage device including a drainage device for a puncture drainage device, a dredge device and a peripheral device, wherein: the puncture drainage device is provided with a puncture needle Core, puncture needle sheath, guide wire and drainage tube, ⁇
  • the puncture needle and the needle sheath are made of plastic and stainless steel materials, and the needle sheath is sleeved outside the needle core for common use for piercing;
  • the guide wire is used to replace the needle core and guide the drainage tube, and the guide wire is made of plastic steel.
  • plastic steel Made of materials (such as twisted plastic), tungsten wire and twisted silica gel, its special flexibility and low radial hardness are easy to shape, and it has shape memory function.
  • the steel material is easy to develop.
  • Its head end is made of twisted silica gel. Soft and soft can reduce the damage of the operative tissue, and the development is good; various head-end shapes can be selected for a variety of complicated conditions, which reduces the difficulty of insertion.
  • the outer layer is a hydrophilic coating J to improve the passability;
  • the drainage tube is used to replace the needle sheath and drainage, and is a channel for the operation of the jet tube.
  • the compliance is good, the tube head is blunt, to reduce tissue damage, and it is convenient to feed the outer diameter of the guide wire into the chamber to be drained.
  • the needle sheath is placed outside the needle core for piercing.
  • the needle core is taken out, the guide wire is inserted from the inner hole of the needle sheath, and the needle sheath is pulled out from the body, and then the drainage tube is guided along the guide wire.
  • the outer diameter is fed into the chamber to be drained, or
  • D S A monitors the deeper part of the lateral ventricle.
  • the technical problem to be solved by the present invention can be further realized by the following technical solutions.
  • the drainage tube is made of materials such as platinum, tungsten wire, plastic and stainless steel, and the entire lumen is covered with a hydrophilic coating (such as PTFE) to Enhance the passability of the device, improve the contrast agent flow rate and development performance; the head end is soft to avoid operational damage; the head end 50 mm is designed from the front to the back in five stages, and the toughness is gradually enhanced to improve compliance and support.
  • the head end 50 mm is composed of a hydrophilic coating, an inner plastic layer, a metal layer and an outer plastic layer from the inside to the outside. Among them, the metal layer of the head end of 10 mm is wound with platinum wire to improve the flexibility and the folding resistance.
  • the remaining 4 segments are made of tungsten wire wound into different densities; the stainless steel braid at the end makes the push performance and the twist control good; the full-layer five-fold structure of the pipe wall to enhance the support and flexibility; the coarse mesh weave and the dense
  • the mesh weave is woven from tungsten wire and stainless steel wire respectively, which makes the visibility, support force and torque control strong.
  • Each head shape can be used for a variety of complex conditions, reducing the difficulty of insertion.
  • the technical problem to be solved by the present invention can be further achieved by the following technical solutions, wherein the outer surfaces of the puncture needle sheath, the guide wire and the drainage tube are marked with a scale. In order to observe the depth of penetration.
  • the technical problem to be solved by the present invention can further realize that the outer end of the drainage tube is connected to the drainage device through the guiding device of the guide and the peripheral device through the following technical solutions.
  • 5-10 side drainage holes are opened in the wall of the head end of the drainage tube to increase the drainage speed and avoid blood clot blocking.
  • the injection core is hollow and the observation chamber is connected to the rear.
  • the observation chamber is connected to the rear.
  • the technical problem to be solved by the present invention can be further achieved by the following technical solution.
  • the jet tube is made of soft twisted silica gel and has good development performance.
  • the head end is round and has a fine hole in the center for jet rinsing. Blocking with dredging; the outer membrane is covered with a water coating to improve slidability and passability for easy insertion.
  • the drainage device is provided with a cerebrospinal fluid drainage bag, the upper part of the cerebrospinal fluid drainage bag is provided with a suspension device, and the bottom portion is internally provided with an introduction tube, and the lower end of the introduction tube Adjacent to the drainage tube, the height of the introduced upper port from the center of the lateral ventricle is 15 to 20 cm, and the lower portion of the cerebrospinal fluid drainage bag is also connected with a liquid collection bag, and the introduction tube is marked with a scale through the pair of introduction tubes. Height adjustment of the upper mouth from the center of the lateral ventricle to control the pressure of the chamber to be drained, reducing the incidence of complications
  • a puncture hole sealer is arranged outside the drainage tube and the human puncture hole, and a drainage tube holder is arranged on the drainage tube outside the puncture hole.
  • the puncture hole sealer is made of silica gel, and is set at the scalp of the drainage tube at the end of the operation.
  • the puncture hole sealer is provided with a pressing hole for pressing and fixing the drainage tube, and one of the left and right sides of the pressing hole is provided.
  • a fixing arm for attaching a tape, and a pressure pad is provided below the inner edge of the pressing hole.
  • the puncture tissue is closed by the tightening of the inner hole and the compression of the bottom pressure pad to prevent the cerebrospinal fluid from being externally Leakage and drain tube displacement.
  • the drainage tube holder is provided with a pinch tube made of elastic silica gel, and each side of the pinch tube is provided with a fixing piece for fixing the drainage tube to the body surface to prevent pulling off.
  • the core principle of cerebrospinal fluid interventional drainage technology is to monitor the anatomical channel and DSA of the cerebrospinal fluid circulation of the human brain and spinal canal.
  • the principle of chamber twisting control of coaxial guide wire and catheter is used to guide the catheter to bend, rotate and Advance and retreat to adapt to the deep, complex, dangerous and extensive structural features of the ventricular system or subarachnoid system to place the catheter into the chamber, at the jet cutting action or thrombolytic agent (recombinant tissue plasminogen activator or Under the thrombolytic effect of urokinase, etc., crushing, dissolving and draining to absorb clots and substances, to achieve smooth cerebrospinal fluid circulation and clear blood, inflammatory and immune harmful substances
  • the present invention in contrast to the prior art, discloses a cerebrospinal fluid interventional drainage device comprising a lancing device, a dredge device, a drainage device for the peripheral device, and a fixture.
  • the piercing device has a puncture needle core, a puncture needle sheath, a guide wire and a drainage needle sheath which are set outside the needle core for puncture.
  • the needle core is taken out and the guide wire is inserted through the inner hole of the needle sheath. Then the needle sheath is pulled out from the body, and then the drainage tube is sent along the outer surface of the guide wire into the chamber to be drained.
  • the guide wire and the drainage tube are made of stainless steel, tungsten wire and the like according to a specific structure, which is soft and easy to shape and develop, and has Shape memory function.
  • the drainage tube can be placed into the third ventricle from the interventricular space under the guidance of the guide wire under the guidance of the guide wire, or further placed into the fourth ventricle via the midbrain aqueduct. If necessary, the cerebrospinal fluid circulation can be cleared by a jet tube. After the peripheral drainage device is installed after the surgery, the liquid control valve can be used to control the opening.
  • the complete device of the present invention has the functions of continuous drainage, dredge obstruction, pressure measurement, administration, replacement of cerebrospinal fluid, sampling, and dynamic observation of rebleeding.
  • FIG. 1 3 ⁇ 4 ventricle interventional drainage device structure diagram
  • Figure 2 3 ⁇ 4 Schematic diagram of the ventricle piercing needle sheath structure.
  • Figure 4 is a schematic view of the structure of the ventricle guide wire.
  • Fig. 5 is a schematic view showing the shape of the head end of each type of ventricle.
  • Figure 6 is a schematic view of the structure of the ventricular drainage tube.
  • Figure 7 is a schematic view of the head end of each type of ventricular drainage tube.
  • Figure 8 is a schematic view of the structure of the ventricle jet tube.
  • Figure 9 is a schematic view showing the structure of the puncture hole closure.
  • Figure 10 is a schematic view of the structure of the drainage tube holder.
  • Figure 1 1 shows the structure of the connecting pipe.
  • Figure 1 2 is a schematic diagram of the structure of the cerebrospinal fluid drainage bag.
  • Figure 1 3 is a schematic diagram of the overall placement of the ventricular interventional drainage device.
  • Figure 14 is a schematic diagram of the structure of the lumbar intervening drainage device.
  • Figure 15 is a schematic diagram of the waist tube drainage tube and the tip end of the guide wire.
  • Figure 1 6 is a schematic diagram of the overall placement of the lumbar intervening drainage device.
  • a cerebrospinal fluid interventional drainage device comprises a drainage device for puncturing drainage device, a dredging device and a peripheral device, and the puncture device is provided with a puncture needle sheath 1, a puncture needle 2, a guide wire 3 and a drainage tube 4.
  • the needle core 2 and the needle sheath 1 are made of stainless steel material, and the needle sheath 1 is placed outside the needle core 2 for common puncture;
  • the guide wire 3 is used for replacing the needle core 2 and guiding the drainage tube 4, the guide wire 3 is convenient for shaping and has a shape memory function, and the outer layer of the guide wire 3 is coated with a hydrophilic drainage tube 4 for replacing the needle sheath 1 and drainage. And for the channel operated by the jet tube, the compliance is good, the tube head is blunt, to reduce the tissue damage, and it is convenient to feed the outer diameter of the guide wire 3 into the chamber to be drained.
  • the needle sheath 1 is placed outside the needle core 2 for piercing.
  • the needle core 2 is taken out, the guide wire 3 is inserted through the inner hole of the needle sheath 1, and the needle sheath 1 is pulled out from the body.
  • the drainage tube 4 is fed along the outer diameter of the guide wire 3 into the chamber to be drained.
  • the outer end of the drainage tube 4 is connected to the drainage bag 1 1 of the peripheral device through the connecting tube 10, and the control tube 10 is provided with a liquid control tank.
  • Example 1 ventricular interventional drainage device
  • the ventricular interventional drainage device includes a puncture and drainage device, a dredging device and a peripheral drainage device and a fixing device, and the puncture device is provided with a ventricle puncture needle 2, a ventricle puncture needle sheath 1, various ventricle guide wires 3, and various types of ventricles
  • the drainage tube 4, the dredging device is provided with a jet tube 18, the peripheral drainage device is provided with a drainage bag 32 and a connecting tube 28, and the fixing device is provided with a puncture hole closure 21 and a drainage tube holder 25. . Placed in a box, sterilized and sealed, disposable.
  • Other interventional devices such as various types of ventricular guidewires and various types of ventricular drainage tubes, are separately sterilized and packaged for single use. Uses: This device is designed for ventricular interventional drainage, ventricular obstruction, intracranial pressure monitoring, cerebrospinal fluid replacement and ventricle administration.
  • Ventricular needle sheath It consists of a sheath rod and a sheath, made of stainless steel. Full length 118 mm.
  • Figure 2
  • Sheath hole 7 The hole for the core, 2.64 legs, inner diameter 2.31 leg (puncture needle No. 9). .
  • Sheath rod 8 cylindrical, length 110 hidden, outer diameter 2.64, inner diameter 2.31 blue (no. 9 needle), inner cavity is cylindrical, smooth, rounded at the tip, smooth with the core 2, in case Damage to tissue.
  • Base 9 Conical, large outer diameter 4 blue, inner diameter 3.4 mm, wall thickness 0.3 leg, length 8 legs, small head end outer diameter 2.64 mm, inner diameter 2.31 legs (no. 9 piercing needle), inner cavity Funnel-shaped, smooth, and smooth with the lumen of the sheath 8.
  • Ventricle puncture needle It consists of a needle bar and an observation chamber made of stainless steel and transparent plastic material. Full length 126 mm.
  • Figure 3
  • Observation Room 6 It is a transparent hard plastic cylindrical cavity with a length of 5 mm, an outer diameter of 6 mm, an inner diameter of 5, and a small hole with a 1-leg diameter at the bottom for exhausting.
  • Needle bar 10 121 legs long, 2.2 OD outer diameter, 1.6 leg inner diameter, inserted into the outer sheath of the puncture needle, the tip of which can be exposed 3 mm.
  • cerebral guide wire guide wire 3 is used to replace the needle 2 and guide the drainage tube 4 Placement, the guide wire 3 is made of inner core plastic material (such as twisted plastic) plus peripherally wound tungsten wire.
  • inner core plastic material such as twisted plastic
  • the head end is made of silicone, soft and soft to reduce the operative tissue damage; various head-end modeling for a variety of complex conditions , reducing the difficulty of insertion.
  • the outer layer is a hydrophilic coating to improve the passability. Diameter 0. 83 mm, solid, length 600 mm.
  • Guide wire tip 1 1 Made of soft twisted silicone. Diameter 0. 83 mm, solid, 5 sa.
  • Guide wire 3 Made of solid steel material (twisted plastic) core wound with tungsten wire. The diameter is 0.83 mm, solid and 595 ⁇ long.
  • Figure 5 shows the shape of each type of guide wire.
  • A is straight, mostly used for lateral ventricle body placement
  • B is microbend, mostly used for lateral ventricle angle and fourth ventricle lateral hole placement
  • C is oblique bending, mostly used for midbrain aqueduct placement
  • D For the inverted curve, it is mostly used for the contralateral side ventricle.
  • ventricle drainage tube 4 is used to replace the needle sheath 1 and the drainage or jet tube operation channel, the drainage tube 4 is made of platinum wire, tungsten wire, plastic, stainless steel and other materials.
  • the outer diameter is 2.64 mm, the inner diameter is 2.3 1 leg, and the length of the drainage tube is 4 10 0 legs.
  • the whole process consistency cavity is covered with a hydrophilic coating (such as PT FE) to enhance the passability of the device, improve the contrast agent flow and development performance; the head end is soft to avoid operational damage; the head end 10 mm is wrapped by platinum wire, It has good flexibility and good bending resistance; the 50mm head end is designed from the front to the back in five sections, and the rigidity is gradually increased to improve the compliance and support.
  • a hydrophilic coating such as PT FE
  • the head end 50 mm is composed of a hydrophilic coating, an inner plastic layer, a wire braid layer and an outer plastic layer from the inside to the outside.
  • the wire braid of 10 mm at the head end is wound with platinum wire to improve the flexibility and the folding resistance.
  • the remaining 4 segments are made of tungsten wire wound into different densities; the stainless steel braid at the end makes the push performance good and the twist control is good; the stainless steel braid at the end makes the push performance and the twist control good; the full-layer five-fold structure of the pipe wall, To enhance the support and flexibility; the rough layer and the dense layer are woven from tungsten wire and stainless steel wire respectively, which makes the visibility, support force and torque control strong.
  • Drain pipe head end 12 The head end is 50 mm without thick and fine braided layer structure, but consists of platinum wire or tungsten wire wound with different flexibility, and is divided into five sections from front to back. Designed to enhance flexibility and resistance to breakage. Among them, the head end 10 mm is wound by platinum wire, the other 40 mm is wound by tungsten wire, and the toughness is gradually enhanced to improve the compliance and support force.
  • Drain hole 5 1 leg in diameter, 6 openings in the end of the pipe, 6 mm spacing between adjacent sides.
  • Insert depth scale 13 every 10 orchids, from front to back, a total of 400 legs 0
  • Drainage wall 14 Outer diameter 2.64 mm, inner diameter 2.31 awake, length 400 mm.
  • the remaining tail segments are a-hydrophilic coating, b-internal plastic layer, c-coarse woven layer (tungsten wire), d-mesh woven layer from inside to outside. (stainless steel wire) and e-outer plastic layer.
  • the control panel 15 made of hard plastic, is used to rotate the drainage tube during operation. ⁇ 8. 64 mm, length 5 mm.
  • the drainage tube connector 16 is funnel-shaped and connected to the coupling tube nipple. Its large end has an outer diameter of 4 legs, an inner diameter of 3.4 mm, a wall thickness of 0.3 ship, a length of 5 legs, a small head end outer diameter of 2.64 mm, and an inner diameter of 2.31 mm.
  • the inner cavity is funnel-shaped, smooth, and smoothly continues with the inner lumen of the drainage tube.
  • Figure 7 shows the shape of the head of each type of drainage tube.
  • A is straight, mostly used for lateral ventricle body implantation;
  • B is microbend, mostly used for lateral ventricle angle and fourth ventricle lateral hole placement;
  • C is small bend, mostly used for midbrain aqueduct placement;
  • D is medium Bend, for anatomical variation for operational selection.
  • E large bend, mostly used for the contralateral side ventricle.
  • the jet tube 18 is made of soft twisted silica gel, the head end is round, the center has a tiny hole for jet flushing and dredging blockage; the outer membrane is covered with a hydrophilic coating to improve Slidability and passability for easy insertion.
  • Figure 8 the jet tube 18 is made of soft twisted silica gel, the head end is round, the center has a tiny hole for jet flushing and dredging blockage; the outer membrane is covered with a hydrophilic coating to improve Slidability and passability for easy insertion.
  • the jet hole 17 in the center of the jet tube, the diameter of 0. 4 mm, through The high pressure fluid is cut and pulverized to achieve its flushing and dredging functions.
  • the jet tube 18, made of silicone, has an outer diameter of 2.30 legs, an inner diameter of 1.70 legs and a length of 461 mm.
  • Base 19 Made of silicone, conical, 4 mm outer diameter, 3.4 legs, 0.3 mm thick, 8 mm long, 2.30 mm small tip, 1.70 mm inner diameter ), the inner cavity is funnel-shaped, smooth, and smoothly continues with the lumen of the jet tube. .
  • Substrate 20 Made of silica gel, expanded in a disk shape to enhance the hand feeling during operation.
  • the outer diameter is 6 mm
  • the inner diameter is 3.4 mm
  • the wall thickness is 0.3 mm
  • the length is 3 legs.
  • the inner cavity of the jet tube base is smoothly continued.
  • Puncture hole sealer 21 It is made of silica gel. At the end of the operation, it is placed at the scalp of the drainage tube 4, and the puncture tissue is closed by the compression of the inner hole 24 and the compression of the bottom pressure pad 23 to prevent leakage and drainage of the cerebrospinal fluid. Tube shift.
  • Figure 9 Figure 9:
  • Fixed arm 22 For attaching tape, one on each side.
  • Insertion hole 24 For the pressure-fixing drainage tube 4, it has a certain extension. The diameter is 2.62mm and the length is 5 mm.
  • FIG. 8-3 Pressure pad 23: Made of soft twisted silicone. When set in the drainage tube, the pressure can close the puncture hole to prevent leakage of cerebrospinal fluid.
  • the fixing piece 27 is made of elastic silicone.
  • the pinch tube 26 is made of elastic silicone. Its function is to clamp the drain tube to prevent pull-out.
  • the inner cavity has a diameter of 2.62 mm, an outer diameter of 5 mm and a length of 15 mm.
  • the connecting tube 28 is made of a polypropylene material and is a passage connecting the drainage tube 4 and the drainage bag 32. With the liquid control valve 29, its switch can directly limit/open the cerebrospinal fluid into the drainage bag 32, so that the ventricle can be opened and closed after the injection.
  • Figure 11
  • Tail end interface nipple of shape and size with the introduction port of the drainage bag Match, the inner cavity is funnel shaped.
  • the outer end of the large end is 4 awake, the inner diameter is 3.4, the wall thickness is 0.3 mm, the length is 5 mm, the outer diameter of the small head end is 2.64 mm, and the inner diameter is 2.31 legs.
  • the inner cavity is funnel-shaped and smooth.
  • Control valve 29 Its structure and function are the same as ordinary infusion tube switch, its size is matched with this connection tube.
  • Connection tube 28 Tube length 300 mm, outer diameter 4 mm, inner diameter 3 mm.
  • Nipple It is shaped and sized to match the connector of the catheter. It is funnel-shaped, 5 mm long, 2.4 mm proximal diameter, 3 mm outer diameter, 2. 64 mm outer diameter tip, and 2 inner diameter.
  • the cerebrospinal fluid drainage bag 32 consists of a transparent rectangular bag made of soft, thin polypropylene plastic and two hard plastic tubes. In addition to the introduction and exit of the two tubes 33, 34, there is no other channel to communicate, which is conducive to sealing and anti-pollution.
  • the introduction and discharge of the two tubes are not connected, and are not at the same level, in order to eliminate the "suction" effect of the pipeline, and to facilitate the constant and maintenance of intraventricular pressure.
  • the introduction tube 33 is engraved with a height scale (cm) to facilitate monitoring of intracranial pressure.
  • Hanging mouth 31 The continuation of the double drainage wall, the outer edge is semi-circular, with a diameter of 40 legs, the opening is round and the diameter is 20 legs. Used for hanging.
  • Drainage cavity A cavity with a rectangular fillet. It is 100 mm long and 40 legs wide.
  • Inlet tube 33 is a vertical inverted "L" type with a high scale (cm) from bottom to top and an empty needle nipple at the entrance that matches the shape and size of the end of the connecting tube.
  • the introduction tube has an outer diameter of 4 legs, an inner diameter of 3.4 mm, a wall thickness of 0.3 legs, a vertical length of 90 legs, and a bending of 20 legs.
  • the extraction tube 34 is a vertical tube, the outlet is empty needle-shaped, and its shape and size match the interface of other common medical drainage bags (such as urine bags).
  • the outlet tube has an outer diameter of 4 mm, an inner diameter of 3.4 legs, and a wall thickness of 0.3 awake.
  • Embodiment 2 lumbar intervening drainage device
  • the lumbar intervening drainage device comprises a puncture and drainage device, a peripheral drainage device and a fixing device, and the puncture device is provided with a lumbar puncture needle 2 a lumbar puncture needle sheath 1, a lumbar guide wire 3 and a lumbar drainage tube 4, the peripheral drainage device is provided with a drainage bag 32 and a connecting tube 28, and the fixing device is provided with a puncture hole closure 21 and drainage Tube holder 25. Placed in the box, sterilized and sealed, disposable application. Uses: This device is specially designed for continuous drainage of the lumbar cistern, cerebrospinal fluid replacement and lumbar cistern administration.
  • Needle sheath 1 Made of stainless steel with a beveled tip that facilitates penetration into the lumbar pool. The total length of the needle sheath is 105 legs. As shown in Figure 14.
  • Base 4 mm outer diameter, 3 mm inner diameter, 5 mm long, cylindrical, distal end funnel-shaped, continuous with needle dry.
  • Needle dry Cylindrical, length 100 mm, outer diameter 1. 22 legs, inner diameter 1.06 mm (passing needle 18), the inner cavity is cylindrical and smooth. The tip is beveled. A long ⁇ scale (in centimeters) is engraved backwards from the tip to facilitate observation of the depth of the needle.
  • Needle 2 Made of stainless steel, solid, connected to its tailstock. The tip is slanted to facilitate penetration into the waist pool. The total length of the core is 107 mm. As shown in Figure 13-B.
  • Substrate Made of stainless steel, solid, connected to its tailstock, cylindrical, with an outer diameter of 8 mm and a thickness of 2 mm, which helps to control the depth of the needle.
  • Tailstock Made of stainless steel, connected to the core and the base plate, it has a cylindrical solid body with an outer diameter of 3 legs and a length of 5 mm. The distal end has a sloped slope that matches the corresponding position of the needle sheath.
  • Needle core 102 mm long, 1. 0 mm in diameter, the tip can be exposed 2 coffee.
  • Guide wire 3 Made of plastic steel material, soft and easy to shape, and has a shape memory function. The tip is rounded to reduce damage to the tissue, the surface is smooth, and the hydrophilic coating is applied for insertion. Diameter 0. 83 mm, solid, 1000 mm long. A length scale (in centimeters) is engraved from the tip to the back.
  • Drain tube 4 Made of soft twisted silicone, with good compliance and rounded head for feeding into the deep pool. A length scale (in centimeters) is engraved from the tip backwards to facilitate viewing of the insertion depth. The tip has a side hole for drainage. The inner diameter of the outer diameter is 4. 4 mm, the inner diameter is 3. 4 ⁇ , the wall thickness is 0.3 mm, the length is 5 mm, the small head end is 1.22 mm, and the inner diameter is 1. 06 mm. The cavity is funnel-shaped, smooth, and smoothly continues with the lumen of the catheter.
  • Dry conduit outer diameter 1. 22 mm, inner diameter 1. 06 legs, length 800 coffee, tip blunt.
  • Drainage side hole diameter 0. 5 legs, opening at the end of the catheter, a total of 6 holes, the adjacent side holes are 10 legs apart.
  • Figure 15 shows the shape of the tube head of the lumbar intervening drainage guide wire and catheter, which is in a curved shape, which facilitates the insertion of the guide wire or catheter into the subarachnoid space of the spinal cord.
  • connection tube 28 the cerebrospinal fluid drainage bag 32, the puncture hole closure 21 and the drainage tube holder 25 have the same structure as the corresponding device of the ventricular interventional drainage device, and the size is matched with the drainage tube.

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  • External Artificial Organs (AREA)

Abstract

L’invention concerne un ensemble effractif pour drainer le liquide céphalorachidien qui comprend un dispositif perforant, un dispositif de conduite et un dispositif de drainage supplémentaire. Le dispositif perforant comprend une gaine perforante (1), une aiguille perforante (2), un fil-guide (3) et un tube de drainage (4). Le fil-guide (3) est souple, bien visible et possède une fonction de mémoire de forme. La couche externe du fil-guide (3) est revêtue d’une couche hydrophile. Le tube de drainage (4) est formé de plastique, platine, acier inoxydable ou similaire, et sa tête est franche. Le tube de drainage (4) est de bonnes conformité et visibilité. Lorsque l’aiguille (2) et la gaine (1) qui recouvre l’aiguille (2) perforent une position adéquate du corps, l’aiguille (2) est retirée. Ensuite, le fil-guide (3) est inséré à travers l'orifice interne de la gaine (1). Après le retrait de la gaine (2) du corps, le tube de drainage (4) est guidé le long du fil-guide (3) dans la lumière à drainer ou dans le ventricule cérébral latéral ou dans une position plus profonde au-delà du lombaire à l'aide d'un surveillance DSA. L’extrémité externe du tube de drainage (4) est raccordée au dispositif de drainage supplémentaire via un cathéter (28).
PCT/CN2005/002316 2005-04-16 2005-12-26 Ensemble effractif pour drainer le liquide cephalorachidien WO2006111056A1 (fr)

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