CN212521951U - Combined spinal-epidural anesthesia puncture needle - Google Patents

Abstract

The utility model provides a combined spinal-epidural anesthesia puncture needle, which comprises an epidural puncture needle tube, two groups of anesthesia catheters and an outer sleeve part, wherein the head end of the epidural puncture needle tube is provided with a needle opening for the two groups of anesthesia catheters to pass through simultaneously; the head ends of the two groups of anesthetic catheters are folded outwards and are arranged in the outer sleeve part; the folding part of the anesthetic catheter is moved out of the outer sleeve member after being placed in the needle opening position so as to open an upper drug delivery part and a lower drug delivery part which are used for delivering drugs to an epidural space. The utility model has the advantages of guarantee first labour and the analgesia of second labour simultaneously, and convenient operation, fail safe nature height.

Description

Combined spinal-epidural anesthesia puncture needle

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a combined spinal cord anesthesia pjncture needle.

Background

"painless childbirth," medically known as "childbirth analgesia," is the use of various methods to relieve pain during childbirth. Under the principle of maintaining the safety of the lying-in woman and the fetus, the transfer of pain sensation nerves during the delivery can be blocked by correctly taking medicines without influencing the regular contraction of the uterus, so that the aim of avoiding or relieving the pain during the delivery is fulfilled, the parturient fetus is not affected, and the clinical anesthesia technology is applied.

The existing painless delivery technology generally adopts a form of one-point puncture, which mainly solves the problems that the pain in the first labor process and the pain in the second labor process are transmitted from iliac 2 to iliac 4 nerves, the volume injected by the one-point puncture cannot block the iliac 2 to iliac 4 nerves, and the analgesia in the second labor process is insufficient; while a second labor satisfaction is achieved by increasing the amount of drug, resulting in increased complications. In order to solve the above problems, two-point puncture is usually adopted to achieve analgesia at the upper and lower positions, two times of puncture are required, the operation is complicated, the efficiency is low, and the pain of a patient is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide one kind and guarantee simultaneously that first labour and second labour are analgesia, and convenient operation, the high waist of fail safe nature unites anesthesia pjncture needle.

In order to solve the technical problem, the utility model provides a technical scheme does:

a combined spinal-epidural anesthesia puncture needle comprises an epidural puncture needle tube, two groups of anesthesia catheters and an outer sleeve part, wherein the head end of the epidural puncture needle tube is provided with a needle opening through which the two groups of anesthesia catheters simultaneously pass; the head ends of the two groups of anesthetic catheters are folded outwards and are arranged in the outer sleeve part; the folding part of the anesthetic catheter is moved out of the outer sleeve member after being placed in the needle opening position so as to open an upper drug delivery part and a lower drug delivery part which are used for delivering drugs to an epidural space.

As a further improvement of the above technical solution:

the outer sleeve part comprises a mounting end cover and a double-cavity embedded pipe which are connected with each other, wherein the mounting end cover is mounted at the tail end of the epidural puncture needle tube through a catheter connector, and the double-cavity embedded pipe extends out of the needle opening after the mounting end cover is mounted in place; and the mounting end cover is provided with two through holes which are respectively communicated with the cavity of the double-cavity imbedding tube.

The head end that the pipe was put into to the two-chamber is equipped with the guide assembly who makes things convenient for the anesthesia pipe to administer to position about the epidural space, guide assembly includes overhead guide vane, lower guide vane and installation department, the installation department is located between two cavitys of pipe is put into to the two-chamber, overhead guide vane is located with lower guide vane on the installation department, and with correspond the cavity relative arrangement of pipe is put into to the two-chamber.

The head end of the needle opening is a pointed head end convenient for puncture, and one end of the double-cavity implantation tube penetrates through the needle opening and protrudes out of the pointed head end.

And a limiting part for limiting the relative position of the installation end cover and the catheter joint is arranged between the installation end cover and the catheter joint, and two cavities of the double-cavity embedded pipe are arranged in parallel relative to the needle opening after the installation end cover and the catheter joint are limited.

The limiting component comprises a limiting protrusion and a limiting groove, the limiting protrusion is arranged on one of the installation end cover and the catheter joint, and the limiting groove is arranged on the other one of the installation end cover and the catheter joint; or the limiting part comprises a polygonal clamping part and a polygonal through hole, the polygonal clamping part is arranged on the pipe joint, and the polygonal through hole is arranged on the mounting end cover.

The outer sleeve part comprises a wrapping sleeve and a pulling part, and the wrapping sleeve wraps the folding parts of the two groups of anesthetic catheters; one end of the pulling part is connected with the wrapping sleeve, and the other end of the pulling part extends out of the tail end of the epidural puncture needle tube after the anesthesia catheter is put in place.

The tail end of epidural puncture needle tube is equipped with pipe joint, it makes things convenient for the anesthesia pipe to put into the intraduct connector of epidural puncture needle to cup joint on the pipe joint, the one end that is close to epidural puncture needle tube tail end of pulling portion stretches out the connector.

The combined spinal-epidural anesthesia puncture needle further comprises a spinal anesthesia puncture needle tube and a spinal anesthesia tube needle core, wherein the spinal anesthesia puncture needle tube is arranged in the epidural puncture needle tube in a penetrating manner during spinal anesthesia puncture, and the head end of the spinal anesthesia puncture needle tube extends out of the needle opening of the epidural puncture needle tube; the lumbar anesthesia puncture needle tube is characterized in that the lumbar anesthesia puncture needle tube is penetrated by the lumbar anesthesia puncture needle core, and the head end of the lumbar anesthesia puncture needle core plugs the needle opening of the lumbar anesthesia puncture needle tube.

The tail end of the epidural puncture needle tube is provided with a catheter connector, the tail end of the lumbar anesthesia puncture needle tube is provided with a needle tube end cover, and the lumbar anesthesia puncture needle tube is arranged on the epidural puncture needle tube through the limiting matching of the needle tube end cover and the catheter connector; the end of the lumbar anesthesia tube needle core is provided with a needle core end cover, and the lumbar anesthesia tube needle core is arranged on the lumbar anesthesia puncture needle tube through the limit matching of the needle core end cover and the needle tube end cover.

Compared with the prior art, the utility model has the advantages of:

(1) the utility model discloses epidural puncture needle tubing's needle mouth can supply two sets of anesthesia pipes to pass simultaneously, and in the head end of two sets of anesthesia pipes outwards folded and located an overcoat part, the folding position of anesthesia pipe shifted out the overcoat part behind putting into needle mouth position to open the overhead portion of dosing and the portion of dosing of putting that forms to epidural space dosing. The novel anesthesia catheter is simple in structure and convenient to operate, the puncture needle can be simultaneously placed into two groups of anesthesia catheters for vertical drug delivery through one-time puncture, pain of the second labor can be effectively improved without increasing dosage, the purpose of simultaneously considering the first labor and the second labor and accurate retardation is achieved, and the problem of complications caused by the increased dosage of the second labor is avoided.

(2) Because two sets of anesthesia pipes adopt the form that the overcoat part shifted out to form and put the portion of dosing down for the needle mouth of epidural puncture needle pipe is just to the head end of needle tubing, and at this moment, the needle mouth of epidural puncture needle pipe can effectively be stretched out to the lumbar anesthesia pjncture needle, realizes that the lumbar anesthesia puncture is dosed, has realized the combined puncture of lumbar vertebrae promptly, and its analgesia effect is better, has just reduced the use of local anesthetic.

(3) The two groups of anesthetic catheters can be used for placing medicines from top to bottom through the same needle opening, so that detection can be completed through one-time liquid injection when whether the needle opening is positioned in an epidural cavity or not is judged, the problem that complicated operation needs to be performed by liquid injection respectively when double needle openings are adopted is avoided, and the detection is convenient and efficient.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Figure 3 is a schematic view of the anesthesia catheter after it has been extended out of the dual lumen introducer.

Fig. 4 is a schematic structural view of the anesthesia catheter of the present invention.

Fig. 5 is a sectional view of section B-B of fig. 4.

Fig. 6 is a schematic view of the position relationship between the epidural puncture needle tube and the catheter adapter of the present invention.

Fig. 7 is a top view of fig. 6.

Fig. 8 is a schematic structural view of the stylet of the present invention.

Fig. 9 is a schematic structural view of embodiment 2 of the present invention.

Fig. 10 is an enlarged schematic view of the portion C of fig. 9.

FIG. 11 is a schematic view showing the position relationship between the lumbar anesthesia puncture needle tube and the lumbar anesthesia tube needle core.

Fig. 12 is a schematic structural view of the lumbar anesthesia tube needle core of the present invention.

The reference numerals in the figures denote:

1. epidural puncture needle tube; 11. a needle opening; 12. a pointed head end; 2. an anesthetic catheter; 21. a folded portion; 211. an upper drug administration part; 212. a drug administration part is arranged below; 3. an outer jacket member; 31. installing an end cover; 32. a double-cavity imbedding tube; 321. a cavity; 33. a guide assembly; 331. a guide sheet is arranged on the guide plate; 332. a guide sheet is arranged below; 333. an installation part; 34. wrapping the sleeve; 35. a pulling part; 4. a catheter adapter; 41. an operating handle; 5. a limiting component; 51. a limiting bulge; 52. a limiting groove; 6. a connector; 7. a hard film tube stylet; 71. connecting an end cover; 8. a lumbar anesthesia puncture needle tube; 81. a needle tube end cap; 9. a lumbar anesthesia tube needle core; 91. and a stylet end cover.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples, but the scope of the invention is not limited thereto.

Example 1

As shown in fig. 1 to 7, the combined spinal and epidural anesthesia puncture needle of the embodiment comprises an epidural puncture needle tube 1, two groups of anesthesia catheters 2 and an outer sleeve component 3. Wherein, the head end of the epidural puncture needle tube 1 is provided with a needle port 11 for two groups of anesthetic catheters 2 to pass through simultaneously; the head ends of the two groups of anesthetic tubes 2 are folded outwards, and the folding parts 21 of the two groups of anesthetic tubes 2 are arranged in the outer sleeve component 3; the folded portion 21 of the anesthetic tube 2 is removed from the sheath member 3 after the insertion into the needle port 11 to open to form the upper administration section 211 and the lower administration section 212. The structure is simple, and the operation is convenient; meanwhile, the upper drug administration part 211 administers drug to the upper part of the epidural space, and is used for the first labor process from the active period to the uterine orifice opening which is too large to meet the requirement of analgesia (about 8 centimeters); the lower administration portion 212 administers the drug to the lower part of the epidural space for the first late phase of labor after the fetus descends (i.e., the uterine opening is opened to about 8 cm) and the second labor, wherein the first labor is visceral pain, innervated by thoracic 10-12 and lumbar 1, and the second labor is somatic nerve, innervated by sacral 2-4.

Meanwhile, the puncture needle can be simultaneously placed into the two groups of anesthesia catheters 2 for up-and-down drug administration through one-time puncture, the pain of the second labor can be effectively improved without increasing the dose, the purposes of simultaneously considering the first labor and the second labor and accurately blocking are achieved, and the problem of complications caused by the increase of the dose of the second labor is avoided.

Because two sets of anesthesia pipes 2 adopt the form that overcoat part 3 shifted out to form overhead portion 211 of dosing and the portion 212 of dosing of putting down for needle mouth 11 just to the head end of epidural puncture needle tubing 1, at this moment, the lumbar anesthesia pjncture needle can effectively stretch out needle mouth 11 of epidural puncture needle tubing 1, realizes that the lumbar anesthesia is punctured and is dosed, and this application has realized the combined puncture of lumbar and dura mater promptly, and its analgesia effect is better, and has reduced the use of local anesthetic.

And above-mentioned structural style makes two sets of anesthesia catheters 2 accessible put the medicine from top to bottom with same needle mouth 11 for can accomplish the detection through once annotating the liquid when judging whether needle mouth 11 is located epidural space, need carry out twice when having avoided adopting two needle mouths and annotate liquid complex operation's problem, it detects conveniently, efficient.

As shown in fig. 1, 2 and 4, the sheath member 3 includes a mounting end cap 31 and a double lumen insertion tube 32. One end of the double-cavity implantation tube 32 is connected with the mounting end cover 31, the other end of the double-cavity implantation tube 32 is inserted into the epidural puncture needle tube 1, and the double-cavity implantation tube 32 extends out of the needle opening 11 after the mounting end cover 31 is mounted in place; the mounting end cap 31 is provided with two through holes, and the two through holes are respectively communicated with the cavity 321 of the double-cavity implanting tube 32 to form a guide channel for the anesthetic tube 2 to pass through. It makes two sets of anesthesia pipes 2 can make things convenient for quick the implantation epidural puncture needle 1 inside, and the overcoat part 3 simple structure is compact, need not to change epidural puncture needle 1 existing structure, with low costs.

Meanwhile, the installation end cover 31 is sleeved on the catheter connector 4, the catheter connector 4 is installed at the tail end of the epidural puncture needle tube 1, the outer sleeve part 3 is relatively fixed with the epidural puncture needle tube 1 after being placed into the epidural puncture needle tube, so that the outer sleeve part 3 can be drawn out together with the epidural puncture needle tube 1 after the anesthetic catheter 2 is placed into the epidural puncture needle tube and before administration, the risk that the anesthetic catheter 2 is cut off by the epidural puncture needle tube 1 when the outer sleeve part 3 is drawn out independently is reduced, and puncture safety is improved. In this embodiment, the catheter adapter 4 is provided with an operating handle 41, and the operating handle 41 is provided with an operating boss to facilitate the puncture operation of the puncture needle.

Referring to fig. 2 and 3, in the present embodiment, the head end of the double-lumen insertion tube 32 is provided with the guide member 33, and the guide member 33 includes an upper guide 331, a lower guide 332 and a mounting portion 333. Wherein, the mounting part 333 is located between the two cavities 321 of the double-cavity implantation tube 32; the upper guide plate 331 and the lower guide plate 332 are disposed on the mounting portion 333, and the upper guide plate 331 and the lower guide plate 332 are disposed opposite to the cavity 321 of the corresponding double-lumen insertion tube 32, so as to adjust the directions of the upper drug delivery portion 211 and the lower drug delivery portion 212, balance the guide points, and control the needle withdrawing force after the folding portion 21 of the anesthetic catheter 2 is opened. In this embodiment, the upper guide 331 and the lower guide 332 are elastic guides.

Specifically, during anesthesia, the anesthesia catheter 2 penetrates into the double-cavity implantation tube 32 from the tail part of the epidural puncture needle tube 1, the folding part 21 is opened when the anesthesia catheter 2 is pushed to the needle opening 11, and at the moment, the upper administration part 211 and the lower administration part 212 are respectively guided to the upper position and the lower position of the epidural space under the action of the upper guide vane 331 and the lower guide vane 332, so that the effects of pushing the tube in a balanced direction and grasping the depth are achieved; meanwhile, when the epidural puncture needle tube 1 is withdrawn after anesthesia, the upper guide vane 331 and the lower guide vane 332 play a role in adjusting the withdrawal direction.

Furthermore, the head end of the needle opening 11 is a sharp head end 12 for facilitating puncture, one end of the dual-cavity insertion tube 32 penetrates through the needle opening 11, and one end of the dual-cavity insertion tube 32 protrudes out of the sharp head end 12, so that the dual-cavity insertion tube is prevented from contacting the needle opening 11 of the epidural puncture needle tube 1 when the folding part 21 of the anesthetic catheter 2 is opened, the risk of cutting off the anesthetic catheter 2 is reduced, the safety of the puncture needle is improved, and secondary injury of patients is avoided. In this embodiment, the protruding tip 12 of one end of the dual-lumen insertion tube 32 is 2-5 mm to prevent the dual-lumen insertion tube 32 from puncturing the epidural space.

Furthermore, a limiting component 5 is arranged between the mounting end cap 31 and the catheter adapter 4, which enables the relative position of the mounting end cap 31 and the catheter adapter 4 to be fixed, so that the relative position of the dual-cavity implantation tube 32 connected with the mounting end cap 31 and the epidural puncture needle tube 1 connected with the catheter adapter 4 is fixed, at this time, the two cavities 321 of the dual-cavity implantation tube 32 are always arranged in parallel relative to the needle opening 11 after the mounting end cap 31 and the catheter adapter 4 are limited, so as to ensure that the anesthetic catheter 2 is administrated to the upper side and the lower side of the epidural space.

In this embodiment, the limiting part 5 comprises a limiting protrusion 51 and a limiting groove 52, the limiting protrusion 51 is arranged on the mounting end cover 31, the limiting groove 52 is arranged on the catheter connector 4, the limiting structure is simple, and the administration of the anesthesia catheter 2 to the upper side and the lower side of the epidural space is ensured. In other embodiments, the limiting protrusion 51 may be disposed on the catheter adapter 4, and the limiting groove 52 may be disposed on the mounting end cap 31. Meanwhile, the limiting component 5 can also be in a clamping fit form of a polygonal clamping part and a polygonal through hole, at this time, the polygonal clamping part is arranged on the conduit joint 4, and the polygonal through hole is arranged on the mounting end cover 31.

Furthermore, the circumference of the inner side wall of the needle opening 11 is provided with an arc chamfer to avoid the contact between the anesthesia catheter 2 and the needle opening 11 of the epidural puncture needle tube 1, thereby greatly reducing the risk of cutting off the anesthesia catheter 2 in the operation process, improving the safety of the puncture needle and avoiding the secondary injury of the patient. In other embodiments, the circumference of the inner side wall of the needle opening 11 can also be provided with a protective pad to prevent the risk of tube breakage of the anesthesia catheter 2, and the protective pad is a rubber pad.

In this embodiment, the epidural puncture needle tube 1 and the anesthetic tube 2 are both provided with scale marks, so that the operator can conveniently adjust the depth of the tube body. Meanwhile, the two anesthetic tubes 2 are set to different colors to distinguish different purposes of the anesthetic tubes 2, such as the upper anesthetic tube 2 is yellow, the lower anesthetic tube 2 is red, and the like.

As shown in fig. 8, in this embodiment, the combined spinal and epidural anesthesia puncture needle further includes an epidural tube core 7, a connection end cap 71 is disposed at the tail end of the epidural tube core 7, and the connection end cap 71 is in sleeve fit with the catheter adapter 4. The head end of the epidural tube needle core 7 can be always positioned at the position for plugging the needle opening 11 when the epidural puncture needle tube 1 is inserted, thereby effectively preventing the epidural puncture needle tube 1 from being blocked during puncture.

As shown in fig. 11 and 12, the combined spinal and epidural anesthesia puncture needle further comprises a spinal puncture needle tube 8 and a spinal core 9. Wherein, the lumbar anesthesia puncture needle tube 8 is arranged in the epidural puncture needle tube 1 in a penetrating way during lumbar anesthesia puncture, and the head end of the lumbar anesthesia puncture needle tube 8 extends out of the needle opening 11 of the epidural puncture needle tube 1 to penetrate into the subarachnoid space. Meanwhile, the lumbar anesthesia needle core 9 is arranged in the lumbar anesthesia puncture needle tube 8 in a penetrating manner, and the head end of the lumbar anesthesia needle core 9 seals the needle opening of the lumbar anesthesia puncture needle tube 8, so that the lumbar anesthesia puncture needle tube 8 is prevented from being blocked during puncture. The combined structure of the waist and the waist stiffness leads the labor analgesia effect to be better and reduces the use of local anesthetics.

Further, the tail end of the epidural puncture needle tube 1 is provided with a catheter connector 4, the tail end of the lumbar anesthesia puncture needle tube 8 is provided with a needle tube end cover 81, the needle tube end cover 81 and the catheter connector 4 are mutually sleeved and limited, and the lumbar anesthesia puncture needle tube 8 is arranged on the epidural puncture needle tube 1 through the limiting and matching of the needle tube end cover 81 and the catheter connector 4. Meanwhile, the tail end of the lumbar anesthesia tube needle core 9 is provided with a needle core end cover 91, the needle core end cover 91 is in mutual sleeve joint with the needle tube end cover 81 for limiting, and the lumbar anesthesia tube needle core 9 is arranged on the lumbar anesthesia puncture needle tube 8 through the limiting matching of the needle core end cover 91 and the needle tube end cover 81. The lumbar anesthesia puncture needle tube 8 and the lumbar anesthesia tube needle core 9 are effectively and fixedly mounted during lumbar anesthesia puncture, and the lumbar anesthesia puncture effect is guaranteed.

In this embodiment, the needle opening of the lumbar anesthesia puncture needle tube 8 is arranged on the side surface of the lumbar anesthesia puncture needle tube 8 and is positioned in the subarachnoid space; the subarachnoid space can be effectively penetrated by the length of the head end of the lumbar anesthesia puncture needle tube 8 extending out of the needle opening 11 of the epidural puncture needle tube 1 being 1cm, and the subarachnoid space can not be punctured due to overlong length.

In the embodiment, after the epidural puncture needle tube 1 is punctured in place, the lumbar anesthesia puncture needle tube 8 and the lumbar anesthesia needle core 9 are placed into the epidural puncture needle tube 1 together, and the head end of the lumbar anesthesia puncture needle tube 8 extends out of the needle opening 11 and penetrates through the subarachnoid space; after the puncture of the lumbar anesthesia puncture needle tube 8 is completed, the lumbar anesthesia puncture needle core 9 is drawn out, and whether cerebrospinal fluid flows out is detected so as to judge whether the needle opening of the lumbar anesthesia puncture needle tube 8 is positioned in the subarachnoid cavity or not and guarantee accurate drug delivery.

After the puncture of the lumbar anesthesia puncture needle tube 8 is finished, the drug can be directly administered to the subarachnoid space through the lumbar anesthesia puncture needle tube 8; or the drug can be normally administered to the epidural through the anesthetic tube 2 instead of directly administered to the subarachnoid space, and the dura mater spinalis and the arachnoid opening which are punctured by the lumbar anesthesia puncture needle tube 8 penetrate into the subarachnoid space. The two methods can achieve the purpose of quickly and perfectly relieving pain.

In this embodiment, the usage of the combined spinal epidural anesthesia puncture needle comprises:

(1) before puncture, the epidural catheter core 7 is inserted into the epidural puncture needle tube 1, and the epidural puncture needle tube 1 punctures the lumbar vertebra part; after the epidural puncture needle tube 1 finishes puncturing, the epidural puncture needle core 7 is extracted, and liquid is injected into the epidural puncture needle tube 1 to judge whether the needle opening 11 is positioned in an epidural cavity or not, so that accurate administration to the epidural cavity is ensured;

(2) inserting a lumbar anesthesia needle core 9 into a lumbar anesthesia puncture needle tube 8, placing the lumbar anesthesia puncture needle tube 8 into an epidural puncture needle tube 1, and extending the head end of the lumbar anesthesia puncture needle tube 8 out of a needle opening 11 to penetrate through the subarachnoid space; after the lumbar anesthesia puncture needle tube 8 completes puncture, the lumbar anesthesia puncture needle core 9 is drawn out, and whether cerebrospinal fluid flows out is detected, so that whether the needle opening of the lumbar anesthesia puncture needle tube 8 is positioned in the subarachnoid space is judged, and accurate drug delivery to the subarachnoid space is ensured;

(3) when the drug is needed to be directly administrated to the subarachnoid space, the drug is administrated to the subarachnoid space through the lumbar anesthesia puncture needle tube 8, after the drug administration is finished, the lumbar anesthesia puncture needle tube 8 is drawn out, and then the epidural drug administration is carried out through the anesthesia catheter 2; when the drug is not directly administered to the subarachnoid space, the punctured lumbar anesthesia puncture needle tube 8 is drawn out, and the drug is normally administered to the epidural space through the anesthesia catheter 2, at the moment, the analgesic drug permeates into the subarachnoid space through the dura mater-breaking membrane punctured by the lumbar anesthesia puncture needle tube 8 and the arachnoid opening, so that the purpose of administering the drug to the subarachnoid space is achieved.

After the lumbar anesthesia puncture needle tube 8 is drawn out, the installation operation process of the anesthesia catheter 2 is as follows: the double-cavity implantation tube 32 is placed in the epidural puncture needle tube 1, and after the mounting end cover 31 and the catheter joint 4 are limited, two groups of anesthetic catheters 2 are inserted into the corresponding cavities 321 of the double-cavity implantation tube 32; when two groups of anesthetic catheters 2 extend out of the double-cavity implanting tube 32, the folding part 21 of the anesthetic catheters 2 is unfolded to form an upper drug administration part 211 and a lower drug administration part 212; after the anesthesia catheter 2 is placed in the epidural space, the anesthesia catheter 2 is pressed, the epidural puncture needle tube 1 and the outer sleeve component 3 are drawn out, and then the drug can be administered through the anesthesia catheter 2.

Example 2

Fig. 9 and 10 show another embodiment of the combined spinal and epidural anesthesia puncture needle of the present invention, which is substantially the same as the previous embodiment except that the outer sheath member 3 of the present embodiment includes a wrapping sheath 34 and a pulling part 35. Wherein, the wrapping sleeve 34 is wrapped on the folding parts 21 of the two groups of anesthetic catheters 2; one end of the pulling part 35 is connected with the wrapping sleeve 34, and the other end of the pulling part 35 extends out of the tail end of the epidural puncture needle tube 1 after the anesthesia catheter 2 is put in place.

During anesthesia, the wrapping sleeve 34 can be moved away from the folding part 21 of the anesthesia catheter 2 by pulling the end of the pulling part 35 positioned outside the epidural puncture needle tube 1, and at the moment, the folding part 21 of the anesthesia catheter 2 is unfolded to form the upper drug administration part 211 and the lower drug administration part 212, so that the structure is simple and the operation is convenient.

Further, the tail end of the epidural puncture needle tube 1 is provided with a conduit connector 4, the conduit connector 4 is sleeved with a connector 6, and the connector 6 is provided with a through hole so as to facilitate the anesthesia conduit 2 to be placed inside the epidural puncture needle tube 1; at this time, the end of the pulling part 35 near the tail end of the epidural puncture needle tube 1 extends out of the connector 6 to facilitate pulling.

In this embodiment, the catheter adapter 4 is provided with an operating handle 41, and the operating handle 41 is provided with an operating boss to facilitate the puncture operation of the puncture needle.

In this embodiment, the installation operation process of the anesthetic tube 2 is as follows: inserting two groups of anesthetic catheters 2 into the epidural puncture needle tube 1, pulling the end of a pulling part 35 positioned outside the epidural puncture needle tube 1 after the anesthetic catheters 2 are inserted in place, at the moment, moving a wrapping sleeve 34 away from a folding part 21 of the anesthetic catheters 2, and opening the folding part 21 of the anesthetic catheters 2 to form an upper drug administration part 211 and a lower drug administration part 212; after the anesthesia catheter 2 is placed in the epidural space, the anesthesia catheter 2 is pressed, the epidural puncture needle tube 1 and the outer sleeve component 3 are drawn out, and then the drug can be administered through the anesthesia catheter 2.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A combined spinal epidural anesthesia puncture needle is characterized by comprising an epidural puncture needle tube, two groups of anesthesia catheters and an outer sleeve part, wherein the head end of the epidural puncture needle tube is provided with a needle opening through which the two groups of anesthesia catheters simultaneously pass; the head ends of the two groups of anesthetic catheters are folded outwards and are arranged in the outer sleeve part; the folding part of the anesthetic catheter is moved out of the outer sleeve member after being placed in the needle opening position so as to open an upper drug delivery part and a lower drug delivery part which are used for delivering drugs to an epidural space.

2. The combined spinal epidural anesthesia puncture needle according to claim 1, wherein the outer sheath member comprises a mounting end cap and a dual-lumen insertion tube which are connected with each other, wherein the mounting end cap is mounted at the tail end of the epidural puncture needle tube through a catheter adapter, and the dual-lumen insertion tube extends out of the needle opening after the mounting end cap is mounted in place; and the mounting end cover is provided with two through holes which are respectively communicated with the cavity of the double-cavity imbedding tube.

3. The combined spinal epidural anesthesia puncture needle according to claim 2, wherein the head end of the double-lumen indwelling catheter is provided with a guide assembly which facilitates the anesthesia catheter to be administered to the epidural space up and down, the guide assembly comprises an upper guide vane, a lower guide vane and an installation part, the installation part is located between the two lumens of the double-lumen indwelling catheter, the upper guide vane and the lower guide vane are arranged on the installation part, and are arranged opposite to the lumens of the double-lumen indwelling catheter correspondingly.

4. The combined spinal epidural anesthesia puncture needle as claimed in claim 2, wherein the head end of the needle port is a pointed head end for facilitating puncture, and one end of the double-lumen implantation tube passes through the needle port and protrudes out of the pointed head end.

5. The combined spinal epidural anesthesia puncture needle according to claim 2, wherein a limiting component for limiting the relative position of the mounting end cap and the catheter adapter is arranged between the mounting end cap and the catheter adapter, and the two cavities of the double-cavity implantation tube are arranged in parallel relative to the needle opening after the mounting end cap and the catheter adapter are limited.

6. The combined spinal epidural anesthesia puncture needle according to claim 5, wherein the limiting component comprises a limiting protrusion and a limiting groove, one of the mounting end cap and the catheter adapter is provided with the limiting protrusion, and the other is provided with the limiting groove; or the limiting part comprises a polygonal clamping part and a polygonal through hole, the polygonal clamping part is arranged on the pipe joint, and the polygonal through hole is arranged on the mounting end cover.

7. The combined spinal epidural anesthesia puncture needle according to claim 1, wherein the outer sheath member comprises a wrapping sheath and a pulling part, the wrapping sheath wraps the folding parts of the two groups of anesthesia catheters; one end of the pulling part is connected with the wrapping sleeve, and the other end of the pulling part extends out of the tail end of the epidural puncture needle tube after the anesthesia catheter is put in place.

8. The combined spinal epidural puncture needle according to claim 7, wherein a catheter connector is arranged at the tail end of the epidural puncture needle tube, a connector which facilitates the placement of an anesthesia catheter into the epidural puncture needle tube is sleeved on the catheter connector, and one end of the pulling part, which is close to the tail end of the epidural puncture needle tube, extends out of the connector.

9. The combined spinal and epidural anesthesia puncture needle according to any one of claims 1 to 8, further comprising a spinal anesthesia puncture needle tube and a spinal anesthesia needle core, wherein the spinal anesthesia puncture needle tube is arranged in the epidural puncture needle tube during spinal anesthesia puncture, and the head end of the spinal anesthesia puncture needle tube extends out of the needle opening of the epidural puncture needle tube; the lumbar anesthesia puncture needle tube is characterized in that the lumbar anesthesia puncture needle tube is penetrated by the lumbar anesthesia puncture needle core, and the head end of the lumbar anesthesia puncture needle core plugs the needle opening of the lumbar anesthesia puncture needle tube.

10. The combined spinal-epidural anesthesia puncture needle according to claim 9, wherein a needle tube end cap is arranged at the tail end of the spinal-epidural anesthesia puncture needle tube, and the spinal-epidural anesthesia puncture needle tube is mounted on the epidural puncture needle tube through the limit fit of the needle tube end cap and the catheter adapter; the end of the lumbar anesthesia tube needle core is provided with a needle core end cover, and the lumbar anesthesia tube needle core is arranged on the lumbar anesthesia puncture needle tube through the limit matching of the needle core end cover and the needle tube end cover.

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