CN206852894U - Epidural catheter and use its epidural puncture device - Google Patents

Abstract

The utility model provides a kind of epidural catheter and uses its epidural puncture device, the rear end of the epidural catheter is provided with medicine-pouring hole, front end is blind end, catheter wall close to the blind end is provided with medicine outlet hole, the blind end is embedded with metalwork when epidural catheter extrusion molding, one kind in the wire that the metalwork is metal fillings, length is 0.05 ~ 0.3cm.The metalwork movement in conduit only can be seen in the utility model under the front end encasing metal bits or segment wire of epidural catheter, perspective, is easy to confirm whether conduit reaches required treatment or analgesic nerve segment.Moreover, metal fillings or the wire of 0.2 ~ 0.3cm length had both avoided the long wire of tradition damage dural sac, spinal cord and nerve really up to the mark, contrast agent costliness and the inexactness of identification when turn avoid alone radiography positioning.

Description

Epidural catheter and use its epidural puncture device

Technical field

The utility model is related to technical field of medical instruments, and in particular to a kind of epidural catheter and use its Epidural cavity Sting device.

Background technology

Clinical anesthesia and pain therapy, it is widely used to need the Continuous epidural for inserting epidural catheter anaesthetize, be hard Analgesia is the pain therapy mode that continuous epidural is administered outside film, and during operation, anesthetist is carried out with anesthesia spinal needle in advance Puncture procedure, the spoon shape mouth of needle point is punctured to epidural space or other target sites（Such as muscular fascia gap）, then by dura mater Outer catheter penetrates from epidural puncture Aculeata, is passed by hollow needle needle body, then from puncture needle needle point spoon shape mouth, as needed Appropriate length is inserted, after confirming that epidural catheter does not insert intravascular or cavum subarachnoidale, exits anesthesia spinal needle, firmly Film outer catheter afterbody connects injection connector, carries out injection.

For ache in late cancer, intractable neuralgia, Pain Management often gives Epidural cavity or the treatment of cavum subarachnoidale continuous analgesia, Flow is in 0.2 ~ 2ml per hour, that is to say, that electronic analgesia pump pump medicine several times per hour, can only pump out very small amount every time Analgesic solution, in order to ensure analgesic effect, it is desirable to which required nerve segment must be placed exactly in by inserting the head end of conduit, with true Protect the nerve of a small amount of analgesia liquid energy retardance lesion pumped out.

It is accurate in place in order to put pipe, there are two methods, first method at present：Long metal is put into epidural catheter to lead Silk, the shift position of whole wire guide can be seen under guide of fluoroscopy, seal wire is extracted behind section needed for arrival, following lack be present Point：Because wire guide is harder, when epidural space and cavum subarachnoidale put pipe, it is easy to damage dural sac, spinal cord and nerve Root, or even long wire guide are fractureed in epidural catheter when extracted, therefore this method is eliminated substantially, is rarely employed. Second method：Iohexol contrast agent is injected in conduit in advance, then by the epidural catheter containing contrast agent under fluoroscopy Pipe section needed for is put, is had the disadvantage that：（1）Contrast agent packaging conventional is 50 ~ 100ml, big-and-middle-sized hospital be typically all into Mouth brand, the hundreds of members of price, adds patient's financial burden；（2）Because conduit is thinner, stomach pneumatosis and cardiopulmonary internal organ during perspective Ghost image, along with common C arm machine has an X-rayed poor performance to vertebra so that even if the epidural catheter of injection contrast agent is still seen not It is clear, or contrast agent overflows into intraspinal tube and spreads up and down accidentally, epidural catheter then disappears to can't see at all, so that accurately putting Pipe is more difficult from.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of epidural catheter and filled using its epidural puncture Put, be both avoided that long wire damage dural sac spinal nerve really up to the mark, avoided the inexactness that contrast agent is expensive and recognizes, energy again Ensure that epidural catheter accurately reaches required section.

In order to solve the above technical problems, embodiment of the present utility model provides a kind of epidural catheter, its rear end is provided with note Medicine hole, front end are blind end, and the catheter wall close to the blind end is provided with medicine outlet hole, and the blind end squeezes in epidural catheter Go out and metalwork is embedded with when being molded.

Wherein, one kind in the wire that the metalwork is metal fillings, length is 0.05 ~ 0.3cm, especially length are 0.2 ~ 0.3cm wire.

Further, the diameter of the blind end is gradually reduced and is convexly curved compared to the diameter of epidural catheter body, Wire is embedded with bending section.

Wherein, 3 ~ 6 medicine outlet holes are staggeredly equipped with the catheter wall away from the 0.5 ~ 3cm of blind end front end.

The utility model embodiment also provides a kind of epidural puncture device, including above-mentioned epidural catheter, in addition to Anesthesia spinal needle, including the needle body of tubulose, the needle stand for being connected to needle rear end, the epidural catheter are worn to hard via needle body Film exocoel, the front end of the needle body is spoon shape needle point, and the internal face of the spoon shape needle point and the intersection of front end face pass through fillet Transition.

Wherein, the medicine-pouring hole rear of the epidural catheter rear end is connected with pipe joint, flow control valve, pressure in turn Regulating valve and medicine injecting device.

Above-mentioned technical proposal of the present utility model has the beneficial effect that：The utility model is only in the front end of epidural catheter Encasing metal is considered to be worth doing or segment wire, the lower metalwork movement that can be seen in conduit of perspective, is easy to confirm whether conduit reaches Required treatment or analgesia section.Moreover, metal fillings or the wire of 0.2 ~ 0.3cm length had both avoided long wire damage dura mater really up to the mark Capsule, spinal cord and nerve, it turn avoid the inexactness that contrast agent is expensive and recognizes.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model embodiment one；

Fig. 2 is the structural representation of the utility model embodiment two；

Fig. 3 is the structural representation of the utility model embodiment three；

Fig. 4 is the structural representation of the utility model embodiment four；

Fig. 5 is the partial enlarged drawing at spoon shape needle point.

Description of reference numerals：

1st, medicine-pouring hole；2nd, blind end；3rd, medicine outlet hole；4th, metal fillings；5th, wire；6th, coagulant material layer；7th, wire；8、 Pipe joint；9th, flow control valve；10th, pressure-regulating valve；11st, medicine injecting device；12nd, anesthesia spinal needle；120th, needle body；121st, pin Seat；13rd, fillet.

Embodiment

To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing And specific embodiment is described in detail.

Embodiment 1：As shown in figure 1, a kind of epidural catheter, its rear end is provided with medicine-pouring hole 1, and front end is blind end 2, described 3 medicine outlet holes 3 staggeredly are provided with the catheter wall of the rear 0.5 ~ 3cm distance segments of blind end 2, the blind end 2 is in epidural catheter Metal fillings 4 is embedded with during extrusion molding.

Embodiment 2：As shown in Fig. 2 a kind of epidural catheter, its rear end is provided with medicine-pouring hole, and front end is blind end, the envelope 3 medicine outlet holes staggeredly are provided with the catheter wall of closed end rear 0.5 ~ 3cm distance segments, the blind end is extruded into epidural catheter Embedded with the wire 5 of 0.05cm length during type.

Coagulant material layer 6 is coated with the outside wall surface of the blind end, coagulant material layer 6 can puncture in epidural catheter The moment of blood vessel meets blood clotting, and the clot after solidification can be identified by arrangement for perspective or imaging device, to remind medical personnel to carry out Emergent management.

Embodiment 3：As shown in figure 3, a kind of epidural catheter, its rear end is provided with medicine-pouring hole, and front end is blind end, the envelope Staggeredly 3 ~ 6 medicine outlet holes are provided with the catheter wall of the rear 0.5 ~ 3cm distance segments of closed end 2.

The diameter of the blind end is gradually reduced and is convexly curved compared to the diameter of epidural catheter body, in bending section Embedded with the wire 7 of 0.2cm length.

The setting of metal fillings or wire either in 1 ~ embodiment of embodiment 3, can be to epidural space or spider When nethike embrane cavity of resorption puts pipe, the movement of epidural catheter front end is seen immediately under fluoroscopy, in order to whether confirm epidural catheter Section needed for arrival.

In embodiment 3 by blind end design be arcuately curved, can make epidural catheter front end encounter blood vessel or it is neural when Avoid, avoid puncturing blood vessel or injured nerve.

Embodiment 4：As shown in figure 4, a kind of epidural puncture device, including any of embodiment 1 ~ 3 Epidural cavity are led Pipe, the medicine-pouring hole rear of the epidural catheter rear end is connected with pipe joint 8, flow control valve 9, pressure-regulating valve 10 in turn With medicine injecting device 11.

The epidural puncture device also includes anesthesia spinal needle 12, and it includes the needle body 120 of tubulose, is connected to needle body The needle stand 121 of 120 rear ends, epidural catheter are worn to epidural space via needle body 120, and the front end of the needle body 120 is spoon shape pin Point, the internal face of the spoon shape needle point and the intersection of front end face pass through the setting of fillet 13, Epidural cavity by the transition of fillet 13 When conduit passes forward anesthesia spinal needle and pulls back anesthesia spinal needle, the inwall seamed edge of spoon shape needle point can be avoided to pierce Broken epidural catheter.

Coagulant material layer can be coated on the inside and outside wall of the spoon shape needle point, to discover anesthesia spinal needle in the very first time Blood vessel is punctured, quickly to handle.

Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement The scope of protection of the utility model is also should be regarded as with retouching.

Claims (8)

1. a kind of epidural catheter, its rear end is provided with medicine-pouring hole, and front end is blind end, is set on the catheter wall of the blind end There is medicine outlet hole, it is characterised in that the blind end is embedded with metalwork when epidural catheter extrusion molding.

2. epidural catheter according to claim 1, it is characterised in that the metalwork is metal fillings, length be 0.05 ~ One kind in 0.3cm wire.

3. epidural catheter according to claim 1, it is characterised in that the diameter of the blind end compares epidural catheter The diameter of body is gradually reduced and is convexly curved, and wire is embedded with bending section.

4. epidural catheter according to claim 1, it is characterised in that away from leading for the 0.5 ~ 3cm of blind end front end 3 ~ 6 medicine outlet holes are staggeredly equipped with tube wall.

5. according to the epidural catheter any one of claim 1,3 or 4, it is characterised in that the outer wall of the blind end Coagulant material layer is coated with face.

6. a kind of epidural puncture device, including the epidural catheter as any one of claim 1 ~ 5, its feature exist In, in addition to anesthesia spinal needle, including the needle body of tubulose, the needle stand for being connected to needle rear end, the epidural catheter via Needle body is worn to epidural space, and the front end of the needle body is spoon shape needle point, the internal face of the spoon shape needle point and intersecting for front end face Place passes through round-corner transition.

7. epidural puncture device according to claim 6, it is characterised in that the medicine-pouring hole of the epidural catheter rear end Rear is connected with pipe joint, flow control valve, pressure-regulating valve and medicine injecting device in turn.

8. epidural puncture device according to claim 6, it is characterised in that coated on the inside and outside wall of the spoon shape needle point There is coagulant material layer.