CN212940872U

CN212940872U - Endoscopic ultrasonic intravenous injection needle

Info

Publication number: CN212940872U
Application number: CN202020584848.4U
Authority: CN
Inventors: 陈洪潭
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-04-13
Anticipated expiration: 2030-04-17

Abstract

The utility model provides an endoscopic ultrasonic intravenous injection needle, which comprises a needle head, a boosting tube and a handle, wherein the boosting tube is internally communicated with a tube cavity, the front end of the handle extends into the tube cavity of the boosting tube, a plurality of groups of embedding holes are respectively arranged on the boosting tube along the axial length direction of the boosting tube at intervals, the front end of the handle is matched and protruded with the corresponding embedding holes and is provided with a convex block, and the convex block is matched with the embedding holes in an embedding way; a hollow hole is formed in the front end of the handle corresponding to the position of the lug; an elastic part for avoiding the retraction of the needle head is elastically connected between the inner wall of the front section of the outer tube and the outer peripheral surface of the needle head. The utility model has the advantages of reasonable design, through the cooperation of lug with the embedding hole, can make clear out needle length, go out the needle and can not contract naturally to can finely tune in good time in the injection according to the demand, be convenient for carry out visual control to the injection depth, avoid the adverse reaction that too dark or too shallow injection brought, satisfy scope supersound guide down the operation needs of esophagogastropheles vein abortion (EUS-SVD).

Description

Endoscopic ultrasonic intravenous injection needle

Technical Field

The utility model relates to a medical equipment especially scope equipment technical field especially relates to a vein injection needle under scope supersound.

Background

Endoscopic sclerotherapy (EIS or EVS) is a method of treating acute variceal rupture bleeding and preventing rebleeding by endoscopic injection of sclerosing agent. The sclerosing agent is injected into the vein to injure the endothelium of the blood vessel, aseptic inflammation is formed locally, leukocyte infiltration is formed, thrombophlebitis is formed, and varicose vein occlusion is caused by organization of thrombus. Common hardening agents include 5% sodium morrhuate, lauromacrogol, absolute ethyl alcohol, 0.5-1.0% ethoxyhardened alcohol, 5% amino ethyl oleate, etc. Endoscopic sclerotherapy is a first-line therapy for the treatment of bleeding from esophageal varices rupture.

The varicose vein injection treatment under the clinical endoscope, under the observation of the endoscope, an endoscope injection needle is inserted through an endoscope channel, and the part needing treatment is injected. The amount of sclerosant, tissue glue and other media injected is determined by the clinician. The dosage and the position of an injection part can not be accurately controlled, and the treatment effect is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the deficiency of the prior art, the utility model provides a use under endoscope ultrasound, can be convenient for art person control injection point injection depth directly perceivedly to in good time finely tune in the injection process, can be clear visual control's scope ultrasound to injection depth and descend vein injection needle.

The utility model provides a technical scheme that its technical problem adopted is: an endoscopic ultrasonic intravenous injection needle comprises a needle head, a boosting tube and a handle, wherein a liquid inlet cavity for medium to pass through is formed in the handle in a penetrating manner, the front end of the liquid inlet cavity is communicated with a needle head pipeline through an infusion inner tube, the tail end of the liquid inlet cavity is a liquid injection port, outer tubes are arranged outside the needle head and the infusion inner tube, the needle head penetrates out from the front end of the outer tube, the tail end of the outer tube is fixed with the boosting tube, a protective sleeve is further wrapped on the outer peripheral surface of the tail end of the outer tube, a tube cavity is formed in the boosting tube in a penetrating manner, the front end of the handle extends into the tube cavity of the boosting tube, a plurality of groups of embedding holes are respectively formed in the boosting tube along the axial length direction of the boosting tube at intervals, a convex block is formed in the front end; a hollow hole is formed in the front end of the handle corresponding to the position of the lug; and an elastic part for avoiding the retraction of the needle head is elastically connected between the inner wall of the front section of the outer tube and the outer peripheral surface of the needle head.

In the scheme, a plurality of spaced embedding holes are ingeniously designed in the boosting pipe, the length of the needle can be adjusted on the boosting pipe according to the arrangement positions of the embedding holes when the length of the needle to be ejected is determined, meanwhile, the elastic part is designed at the front end, and when the length of the needle to be ejected is converted, the needle head cannot retract naturally due to resistance force. The injection depth can be visually controlled through the matching design of the embedding hole and the convex block, and the injection depth can be timely adjusted in the operation, so that over-deep or over-shallow injection is avoided.

Furthermore, in order to fix the length of the needle, each group of the embedding holes comprises two embedding holes, and the central lines of the two embedding holes are positioned on the same straight line; the front end of the handle is provided with two convex blocks and two hollow holes corresponding to the embedding holes in a matching way. Namely, when the length of the needle is fixed, the needle is matched and fixed by a pair of embedding holes positioned on the same radial section.

Furthermore, in order to facilitate fine adjustment of the length of the needle, a rotation angle is formed between straight lines where the center lines of two adjacent groups of the embedding holes are located. When the length of the needle is adjusted, the lug can be pressed down to separate the lug from the original embedding hole, and the lug is rotationally pulled forwards or backwards according to the needle outlet requirement until the required position of the adjacent embedding hole is reached, and the lug is matched with the embedding hole at the position to lock the needle outlet position.

Preferably, in order to press the bump downwards to separate the bump from the embedding hole, a hollow hole may be designed below the bump to provide an elastic deformation space for the bump to press downwards. The axial section of the hollow hole is isosceles trapezoid, the upper bottom and the lower bottom of the isosceles trapezoid are both parallel to the axis of the handle, and the upper bottom of the isosceles trapezoid is positioned on one side close to the axis of the handle.

Furthermore, in order to facilitate the needle head to guide out the needle, the front end of the outer tube is provided with a guide head, and a through hole for the needle head to extend out is arranged in the guide head in a penetrating way; the front end of the guiding head is a cambered surface, the tail end of the guiding head is provided with a guiding inclined plane, and the inclination of the guiding inclined plane is matched with the inclination of the inclined plane of the liquid outlet of the needle head; the elastic piece is a spring ring, the spring ring is wound on the peripheral surface of the needle head positioned on the inner side of the guide head, one end of the spring ring is connected with the guide inclined plane, and the other end of the spring ring is connected with the peripheral surface of the needle head.

Further, for the convenience of handle front end entering boosting pipe, boosting pipe tail end inner wall circumference fixed bayonet socket has, fixed bayonet socket position set up on the circumference inner wall between originated through-hole and boosting pipe tail end terminal surface, boosting pipe tail end inner wall in still have the buckle through fixed buckle joint, the buckle in link up and have the passageway that supplies the handle direction to stretch into the boosting pipe.

Preferably, the needle head is a needle head after roughening treatment.

The beneficial effects of the utility model are that, the utility model provides a venous injection needle under scope ultrasound, structural design is reasonable, through the cooperation of lug with the embedding hole, can make clear out needle length, goes out the needle and can not contract naturally to can finely tune in good time in the injection according to the demand, be convenient for carry out visual control to the injection depth, avoid the adverse reaction that too dark or too shallow injection brought, satisfy the operation needs of scope ultrasound guide lower esophageal gastric varices vein cutout art (shortly: EUS-SVD).

Drawings

The present invention will be further explained with reference to the drawings and examples.

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

Fig. 2 is an enlarged sectional view taken at a-a in fig. 1.

Fig. 3 is an enlarged sectional view taken at B-B in fig. 1.

In the figure, the device comprises a guide inclined plane 1, a needle 3, a guide head 4, a spring ring 5, an infusion inner tube 6, a bump 7, an injection port 8, a handle 9, a boosting tube 10, a protecting tube 11, an outer tube 12, a buckle 13, a fixing bayonet 14, an embedding hole 15 and a hollow hole.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

An endoscopic ultrasonic intravenous injection needle as shown in fig. 1 to fig. 3 is a preferred embodiment of the present invention, and comprises a needle head 2, a booster tube 9 and a handle 8. Run through the feed liquor chamber that has the confession medium to pass through in the handle 8, feed liquor chamber front end through infusion inner tube 5 and 2 pipeline intercommunications of syringe needle, feed liquor chamber tail end is for annotating liquid mouth 7, syringe needle 2 and infusion inner tube 5 be equipped with outer tube 11 outward, 11 front ends of outer tube supply syringe needle 2 to run through and stretch out, the tail end is fixed with boosting pipe 9, outer tube 11 tail end outer peripheral face on still the parcel be equipped with protecting tube 10. For the convenience of handle 8 front end entering boosting pipe 9, 9 tail end inner wall circumference of boosting pipe have fixed bayonet 13, fixed bayonet 13 position set up on the circumference inner wall between originated through-hole and boosting pipe 9 tail end terminal surface, 9 tail end inner wall of boosting pipe in still have buckle 12 through fixed buckle 12 joint, buckle 12 in the through have the passageway that supplies handle 8 direction to stretch into boosting pipe 9.

The boosting pipe 9 is internally provided with a through pipe cavity, the front end of the handle 8 extends into the pipe cavity of the boosting pipe 9, a plurality of groups of embedding holes 14 are respectively arranged on the boosting pipe 9 at intervals along the axial length direction of the boosting pipe, the front end of the handle 8 is provided with a convex block 6 corresponding to the embedding holes 14 in a matched and protruding mode, and the convex block 6 is matched with the embedding holes 14 in an embedded mode. In practical design, in order to facilitate fixing the length of the needle, each set of the insertion holes 14 comprises two insertion holes 14, and the center lines of the two insertion holes 14 are positioned on the same straight line. In this embodiment, 5 sets of insertion holes 14 may be preferably designed, and the lengths of the needle outlet are 10mm, 8mm, 6mm, 4mm, 2mm, and 0mm in sequence from front to back. The last set of insertion holes 14 is in the initial state, inside which the needle 2 is retracted.

The front end of the handle 8 is provided with two projections 6 and two hollow holes 15 corresponding to the inserting holes 14. Namely, when the length of the needle is fixed, the needle is engaged and fixed by a pair of insertion holes 14 located on the same radial section. Meanwhile, in order to facilitate fine adjustment of the length of the needle, a rotation angle is formed between straight lines where the center lines of two adjacent groups of the insertion holes 14 are located. When the length of the needle is adjusted, the lug 6 can be pressed down to separate the lug 6 from the original embedding hole 14, the pulling handle 8 is rotated forwards or backwards according to the needle outlet requirement until the required position of the adjacent embedding hole 14 is reached, the lug 6 is matched with the embedding hole 14 at the position, and the needle outlet position is locked.

When selecting materials, the front end of the handle 8 can be made of plastic with composite medical requirements, in order to facilitate deformation yielding, the lug 6 is pressed downwards to enable the lug 6 to be separated from the embedding hole 14, and a hollow hole 15 can be designed below the lug 6 to provide an elastic deformation space for the lug 6 to be pressed downwards. The axial section of the hollow hole 15 is isosceles trapezoid, the upper bottom and the lower bottom of the isosceles trapezoid are both parallel to the axis of the handle 8, and the upper bottom of the isosceles trapezoid is positioned on one side close to the axis of the handle 8.

The front end of the outer tube 11 is provided with a guide head 3, and a through hole for the needle head 2 to extend out is arranged in the guide head 3 in a penetrating way; the front end of the guiding head 3 is a cambered surface, the tail end of the guiding head is provided with a guiding inclined plane 1, the inclination of the guiding inclined plane 1 is matched with the inclination of the inclined plane of the liquid outlet of the needle head 2, and the needle head 2 can be effectively guided to be discharged. When the needle head 2 receives forward force, the inclined surface of the liquid outlet of the needle head 2 is matched with the guide inclined surface 1, slides to the through hole on the guide head 3 and extends out after penetrating through the guide head 3.

An elastic part for preventing the needle head 2 from retracting is elastically connected between the inner wall of the front section of the outer tube 11 and the outer peripheral surface of the needle head 2. The elastic piece is a spring ring 4, the spring ring 4 is surrounded on the peripheral surface of the needle head 2 positioned at the inner side of the guide head 3, one end of the spring ring 4 is connected with the guide inclined plane 1, and the other end of the spring ring is connected with the peripheral surface of the needle head 2. The spring ring 4 can elastically tighten the needle head 2 and the guide head 3, when the needle outlet length is fixed, the elasticity of the spring ring 4 does not work, when the needle outlet length is adjusted and the needle outlet length of the needle head 2 is not fixed, the spring ring 4 can effectively tighten the needle head 2 and the guide head 3, and the situation that the needle head 2 retracts under resistance to influence the injection effect is avoided.

Meanwhile, in the selection of the needle head 2, the needle head 2 after roughening treatment is adopted, so that the echo track of the needle can be clearly seen under the EUS, and over-deep or over-shallow injection is further avoided.

When the locking device is used, the lug 6 is matched and connected with the 0mm embedding hole 14 at the initial position, the needle needs to be adjusted at the moment, the lug 6 is pressed down corresponding to the embedding hole 14, the lug 6 is separated from the 0mm embedding hole 14 under the matching deformation of the hollow hole 15, the handle 8 is pushed forwards to the embedding hole 14 with the required needle length, the lug 6 is matched with the corresponding embedding hole 14 in an embedding mode, and the locking of the needle is completed. When needs are finely adjusted to the length of going out the needle, then press lug 6 contact and the locking of embedding hole 14 equally, then rotate and lock behind the adjacent embedding hole 14, can accomplish the fine setting operation of length of going out the needle, adjustment process convenient and fast and clear directly perceived visual.

Intravenous route needle under scope ultrasonic of so design, structural design is reasonable, has designed a plurality of spaced embedding holes 14 on boosting pipe 9 ingeniously, can be when confirming needs length of withdrawing a needle, according to embedding hole 14's the position adjustment of arranging on boosting pipe 9 length of withdrawing a needle, and front end design elastic component simultaneously when switching length of withdrawing a needle, needle 2 is hindered the power and can not take place the nature and retract yet. The injection depth is controlled visually through the matching design of the embedding hole 14 and the convex block 6, and the injection depth is adjusted in time in the operation, so that adverse reaction caused by over-deep or over-shallow injection is avoided, and the operation requirement of esophagogastropheles vein cutting off (EUS-SVD for short) under the guidance of endoscopic ultrasound is met.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an intravenous injection needle under scope supersound, includes syringe needle (2), boosting pipe (9) and handle (8), runs through the feed liquor chamber that has the confession medium and pass through in handle (8), feed liquor chamber front end through infusion inner tube (5) and syringe needle (2) pipeline intercommunication, feed liquor chamber tail end is for annotating liquid mouth (7), syringe needle (2) and infusion inner tube (5) be equipped with outer tube (11) outward, outer tube (11) front end supplies syringe needle (2) to run through and stretch out, the tail end is fixed with boosting pipe (9), outer tube (11) tail end outer peripheral face on still the parcel be equipped with protecting tube (10), its characterized in that: the boosting pipe (9) is internally provided with a pipe cavity in a through mode, the front end of the handle (8) extends into the pipe cavity of the boosting pipe (9), a plurality of groups of embedding holes (14) are respectively formed in the boosting pipe (9) at intervals along the axial length direction of the boosting pipe, the front end of the handle (8) is provided with a convex block (6) in a matched and protruding mode corresponding to the embedding holes (14), and the convex block (6) is matched with the embedding holes (14) in an embedded mode; a hollow hole (15) is formed in the front end of the handle (8) corresponding to the position of the lug (6); and an elastic part for avoiding the retraction of the needle head (2) is elastically connected between the inner wall of the front section of the outer tube (11) and the outer peripheral surface of the needle head (2).

2. The endoultrasonic intravenous injection needle of claim 1, wherein: each group of the insert holes (14) comprises two insert holes (14), and the center lines of the two insert holes (14) are positioned on the same straight line; the front end of the handle (8) is provided with two convex blocks (6) and two hollow holes (15) corresponding to the embedding holes (14).

3. The endoultrasonic intravenous injection needle of claim 2, further comprising: the straight lines of the central lines of the two adjacent groups of the embedding holes (14) have rotation angles.

4. The endoultrasonic intravenous injection needle of claim 1, wherein: the axial section of the hollow hole (15) is isosceles trapezoid, the upper bottom and the lower bottom of the isosceles trapezoid are both parallel to the axis of the handle (8), and the upper bottom of the isosceles trapezoid is positioned on one side close to the axis of the handle (8).

5. The endoultrasonic intravenous injection needle of claim 1, wherein: the front end of the outer tube (11) is provided with a guide head (3), and a through hole for the needle head (2) to extend out is arranged in the guide head (3) in a penetrating way; the front end of the guiding head (3) is a cambered surface, the tail end of the guiding head is provided with a guiding inclined plane (1), and the inclination of the guiding inclined plane (1) is matched with the inclination of the inclined plane of the liquid outlet of the needle head (2); the elastic piece be spring coil (4), spring coil (4) encircle on being located syringe needle (2) periphery face of seeker (3) inboard, spring coil (4) one end is connected with direction inclined plane (1), the other end is connected with syringe needle (2) periphery face.

6. The endoultrasonic intravenous injection needle of claim 1, wherein: booster pipe (9) tail end inner wall circumference fixed bayonet socket (13) have, fixed bayonet socket (13) position set up on the circumference inner wall between initial through-hole and booster pipe (9) tail end terminal surface, booster pipe (9) tail end inner wall in still have buckle (12) through fixed buckle (12) joint, buckle (12) in link up and have the passageway that supplies handle (8) direction to stretch into booster pipe (9).

7. The endoultrasonic intravenous injection needle of claim 1, wherein: the needle head (2) is the needle head (2) which is subjected to roughening treatment.