CN112914697A

CN112914697A - Enhanced developing puncture needle for ultrasonically guiding nerve block

Info

Publication number: CN112914697A
Application number: CN202110337825.2A
Authority: CN
Inventors: 陈受琳; 余树春; 吴雨晴; 张旭东
Original assignee: Second Affiliated Hospital to Nanchang University
Current assignee: Second Affiliated Hospital to Nanchang University
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-06-08
Anticipated expiration: 2041-03-30
Also published as: CN112914697B

Abstract

The invention discloses an enhanced visualization puncture needle for ultrasound-guided nerve block, comprising an outer needle, one end of the outer needle is provided with a cutting edge, the other end of the outer needle is fixed with a needle seat, the outer needle comprises a shell, and the inner shell is eccentric An inner shell is fixed, a cover is fixedly connected between the inner shell and the outer shell, a cavity is arranged between the inner shell and the outer shell, and the cavity is filled with gas, and the end of the outer wall of the inner shell close to the cutting edge is provided with a number of reflections in a circumferential array. The inner shell is detachably connected with an inner needle, and the length of the inner needle is greater than the sum of the lengths of the outer needle and the needle seat. By filling the cavity with gas with high reflectivity to ultrasonic waves, and opening a reflective groove on the surface of the inner shell, the invention improves the reflectivity of ultrasonic waves, develops more clearly under ultrasonic waves, and reduces the probability that the puncture needle accidentally injures surrounding organs. Improve the accuracy of puncture and drug delivery, improve the effect of nerve block anesthesia, and improve the success rate of surgery; set the inner needle, which can be used for puncture sampling and minimally invasive surgery, increasing the scope of application of the puncture needle.

Description

Enhanced developing puncture needle for ultrasonically guiding nerve block

Technical Field

The invention relates to the technical field of medical instruments, in particular to an enhanced developing puncture needle for ultrasonically guiding nerve block.

Background

With the development of visualization technology, the nerve blocking technology under ultrasonic guidance is more and more popular. Nerve block requires the use of a puncture needle. The prior common puncture needle is not easy to clearly develop under ultrasound. The unclear visualization may affect the positioning of the puncture needle, may cause the puncture needle to damage the nerve or accidentally injure peripheral organs, and may also affect the nerve blocking effect due to inaccurate positioning when the drug is administered through the puncture needle.

Disclosure of Invention

The invention aims to provide an enhanced visualization puncture needle for ultrasonically guiding nerve block, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme: the invention provides an enhanced developing puncture needle for ultrasonically guiding nerve block, which comprises an outer needle, wherein one end of the outer needle is provided with a cutting edge, the cutting edge is obliquely arranged, and the other end of the outer needle is fixedly connected with a needle seat;

the outer needle comprises an outer shell, an inner shell is arranged in the outer shell, and the inner shell and the outer shell are eccentrically fixed; a sealing cover is fixedly connected between the inner shell and the outer shell; a cavity is arranged between the inner shell and the outer shell, and gas is filled in the cavity;

a plurality of reflecting grooves are formed in the contact surface array of one end, close to the cutting edge, of the outer wall of the inner shell and the cavity;

the inner shell is internally detachably connected with an inner needle, the outer diameter of the inner needle is matched with the inner cavity of the inner shell, one end of the inner needle is flush with the outer shell, the other end of the inner needle penetrates through the needle seat and is fixedly connected with a tailstock, and the length of the inner needle is greater than that of the outer shell and the needle seat.

Preferably, the needle seat comprises a push handle, one side of the push handle, which is far away from the cutting edge, is rotatably connected with a base, the shell penetrates through the push handle and extends into the base, and the shell is fixedly connected with the base; the base is kept away from the one end of shell has seted up the draw-in groove, the draw-in groove with the tailstock can be dismantled and be connected.

Preferably, the outer side of the base is provided with a directional mark, and the direction of the directional mark is in the same direction with the cutting edge.

Preferably, the inner needle comprises a needle body, one end of the needle body is flush with the cutting edge, and the needle body is provided with a hollow groove; the needle body is detachably connected with the inner wall of the inner shell.

Preferably, the empty groove is arranged close to the cutting edge, the bottom surface of the empty groove is arc-shaped, and needle edges are formed on two side edges of the empty groove.

Preferably, one end edge of the needle body close to the cutting edge forms a cutting edge.

Preferably, the tailstock is provided with an interface, and the interface is electrically communicated with the inner needle.

Preferably, the shell overcoat is equipped with the protection base, the protection base with the pushing hands rigid coupling, can dismantle on the protection base and be connected with the protective sheath, the protective sheath is established on the shell.

Preferably, a plurality of positioning lines are arranged on the outer circumference of the shell at intervals, and the interval between every two adjacent positioning lines is fixed to be 5mm or 10 mm.

Preferably, the cross section of the reflecting groove is one or more of a circle, an ellipse and a polygon.

The invention discloses the following technical effects: compared with the prior art, the invention improves the reflectivity of the invention to ultrasonic waves by filling the gas with high reflectivity to ultrasonic waves in the cavity, utilizing the characteristics that the reflectivity of the ultrasonic waves is high on the contact surface of different media and the reflectivity of the gas to the ultrasonic waves is larger than that of a solid, so that the invention can develop more clearly under the ultrasonic waves; the reflecting groove is formed in the surface of the inner shell, so that the volume of gas is increased, the areas of different contact surfaces are increased, the reflecting area of the inner shell to ultrasonic waves is increased, and the reflecting area are combined, so that the developing definition under ultrasonic is further improved, the probability that a puncture needle damages nerves and accidentally injures peripheral organs is reduced, the puncture administration accuracy is improved, the nerve block anesthesia effect is improved, and the anesthesia success rate is improved; the arrangement of the inner needle can also be used for puncture sampling and minimally invasive surgery, and the application range of the puncture needle is enlarged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a front view of an enhanced visualization needle for ultrasonically guided nerve block in accordance with the present invention;

FIG. 2 is a schematic view of the outer needle structure of the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic view of a structure of a handle according to embodiment 2 of the present invention;

FIG. 5 is an enlarged view of a portion of A in FIG. 4;

FIG. 6 is a schematic view of the inner needle structure according to embodiment 3 of the present invention;

wherein, 1 is an outer needle; 2 is a protective sleeve seat; 3 is a pushing handle; 4 is a base; 5 is an inner needle; 6 is a tailstock; 7 is a protective sleeve; 8 is a cutting edge; 9 is a pointing sign; 10 is a grab handle; 1001 is a plug; 1002 placing a hole; 1003 is a top block; 1004 is a limit groove; 1005 is a sliding sheet; 1006 is a nut; 1007 spring; 1008 is a screw; 1009 is the card foot; 11 is a shell; 12 is an inner shell; 13 is a cavity; 14 is a sealing cover; 15 is a reflection groove; 51 is a hollow groove; 52 is a needle body; 53 is a knife edge; 54 is a needle blade, 55 is an ultrasonic generator; 56 is a lead; and 57 is a guide wire cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example 1

Referring to fig. 1-3, the invention provides an enhanced developing puncture needle for ultrasonically guiding nerve block, which comprises an outer needle 1, wherein one end of the outer needle 1 is obliquely provided with a cutting edge 8, the cutting edge 8 is obliquely arranged, the other end of the outer needle 1 is fixedly connected with a needle seat, and the oblique cutting edge 8 can increase the puncture capability of the enhanced developing puncture needle and reduce the pain of puncture;

the outer needle 1 comprises an outer shell 11, an inner shell 12 is arranged in the outer shell 11, and the inner shell 12 and the outer shell 11 are eccentrically fixed; a sealing cover 14 is fixedly connected between the inner shell 12 and the outer shell 11; a cavity 13 is arranged between the inner shell 12 and the outer shell 11, gas is filled in the cavity 13, the gas is gas with high reflectivity to ultrasonic waves, such as oxygen, nitrogen, argon and the like, and the reflectivity of the ultrasonic waves on different medium contact surfaces is high, and meanwhile, the reflectivity of the gas to the ultrasonic waves is higher than that of a solid, so that the reflectivity of the ultrasonic waves is improved; a plurality of reflecting grooves 15 are circumferentially arrayed at one end of the outer wall of the inner shell 12 close to the cutting edge 8; the volume of the gas in the cavity 13 is increased, the contact area of different media is increased, the reflection area of the inner shell to ultrasonic waves is increased, and the definition of development under ultrasound is further improved by combining the volume and the reflection area;

the inner shell 12 is internally detachably connected with an inner needle 5, the outer diameter of the inner needle 5 is matched with the inner cavity of the inner shell 12, one end of the inner needle 5 is flush with the outer shell 11, the other end of the inner needle 5 penetrates through the needle base and is fixedly connected with a tailstock 6, the length of the inner needle 5 is greater than the sum of the lengths of the outer shell 11 and the needle base, the inner needle 5 comprises a needle body 52, one end of the needle body 52 is flush with the cutting edge 8, the needle body 52 is detachably connected with the inner wall of the inner shell 12, the needle body 52 blocks the inner cavity of the inner shell 11, and human tissues are prevented from entering the inner cavity of the inner;

the needle body 52 is provided with an empty groove 51, the needle body 52 provided with the empty groove 51 is segmented, the top surface of the needle body 52 is in a concave arc shape, the top surface and the circumference of the needle body 52 form a needle blade 54, when puncture sampling is needed, the inner needle 5 is pushed inwards, the empty groove 51 extends out from the cutting edge 8, the needle body 52 is rotated, the needle blade 54 cuts a tissue to be sampled and is placed in the empty groove 51, and then the inner needle 5 is pulled out from the outer needle 1 to obtain a tissue sample;

the edge of one end of the needle body 52 close to the cutting edge 8 forms a cutting edge 53, the cutting edge 53 can increase the capability of further puncturing of the inner needle 5 during sampling, and meanwhile, the cutting edge 53 can be used as an operation tool for minimally invasive puncture operations to carry out minimally invasive operations.

The needle stand comprises a push handle 3, one side of the push handle 3, which is far away from the cutting edge 8, is rotatably connected with a base 4, a shell 11 penetrates through the push handle 3 and extends into the base 4, and the shell 11 is fixedly connected with the base 4; the draw-in groove has been seted up to the one end that shell 11 was kept away from to base 4, and the draw-in groove can be dismantled with tailstock 6 and be connected, and the bottom surface and the inner shell 12 intercommunication of draw-in groove, and the draw-in groove can be used for when the 5 inward movements of interior needle the joint of tailstock 6 spacing, and the shape of draw-in groove and the syringe injection port adaptation of the anesthesia of nerve block simultaneously, when needing to carry out the anesthesia of nerve block, take off interior needle 5, insert the draw-in groove with the syringe, then with the position that the cavity injection of anesthetic medicine.

Further optimization scheme, the outside of base 4 is equipped with directional sign 9, and directional sign 9 orientation is perpendicular with blade 8, the 8 directions of blade of looking over the pjncture needle that can be convenient prevent the puncture error that 8 deviations of blade lead to.

According to the further optimized scheme, the tailstock 6 is provided with an interface which is electrically communicated with the inner needle 5, so that the inner needle 5 can be used as an electric needle in a minimally invasive surgery, and the inner cavity of the inner shell 12 is coated with an insulating layer to prevent the inner needle 5 from being electrically communicated with the inner shell 12.

Further optimize the scheme, the interval is equipped with a plurality of location lines on the outer circumference of shell 11, the interval of adjacent location line is fixed for 5mm or 10mm, the location line can be convenient for the doctor to judge the depth of penetration, 11 overcoat of shell is equipped with protective sheath seat 2,

protective sheath seat

2 and 3 rigid couplings of pushing hands, can dismantle on the protective sheath seat 2 and be connected with protective sheath 7, protective sheath 7 cover is established on shell 11 for protective sheath 11 can not receive the pollution of external dust and sewage, reduce the washing and the disinfection degree of difficulty.

In a further optimized scheme, the cross section of the reflection groove 15 is one or more of a circle, an ellipse and a polygon, namely the contact area between the gas in the cavity 13 and the inner shell 11 is increased, the reflection area of the outer surface of the inner shell 11 is further increased, and the reflection efficiency of the outer needle 1 on ultrasonic waves is improved.

Before using the device, the protective sleeve 7 is taken down, the inner needle 5 is inserted back into the outer needle 1, and the cutting edge 53 of the inner needle 5 is aligned and coincided with the cutting edge 8 of the outer needle 1; then the selected puncture site is sterilized and local anesthesia is performed as required.

If the puncture depth and the puncture path are designed in advance, the position can be determined according to the positioning line on the outer needle 1, and then the puncture is carried out to the preset position, so that the puncture is convenient, the puncture is not required to be slowly carried out, and the pain of a patient is relieved.

If need organize the sample, earlier with outer needle 1 puncture to treating the sample position, then promote tailstock 6, stretch out interior needle 5 by blade 8 department, stretch out blade 8 until dead slot 51, then rotatory tailstock 6 a week, make interior needle 5 together rotatory, use the needle sword 54 of needle body 52 both sides to cut down tissue all around, and store in dead slot 51, then outwards take out tailstock 6 and get back to initial position, then take out the pjncture needle wholly, just can obtain required tissue, also avoid tissue all around to mix simultaneously, influence the accuracy of sample.

If nerve block anesthesia needs to be carried out, firstly carrying out ultrasonic scanning on a selected puncture part, preliminarily judging the internal condition of the tissue, determining a puncture scheme, then carrying out puncture, holding a needle seat of a puncture needle by one hand for puncture and holding an ultrasonic scanner by the other hand for scanning the internal condition of the tissue and the position of the puncture needle in real time, wherein as a cavity 13 between an outer shell 11 and an inner shell 12 of an outer needle 1 of the puncture needle is filled with gas with high ultrasonic reflectivity, and a reflecting groove 15 is also formed at the position of the inner shell 12 close to a cutting edge 8, the reflectivity of the puncture to ultrasonic waves is improved, and ultrasonic reflection imaging is clearer; after the puncture is in place, the inner needle 5 is pulled out, then the outlet of the injector filled with anesthetic is connected into the interface of the tailstock 6, then the anesthetic is injected to carry out nerve block anesthesia, the outer needle 1 is taken down after the nerve block anesthesia is finished, and then the puncture needle is cleaned and disinfected.

If minimally invasive surgery needs to be carried out, the minimally invasive surgery also needs to be carried out under the support of ultrasonic reflection imaging, the puncture needle is firstly punctured to a surgery position, then the protective base 2 is moved to the contact position of the outer needle 1 and the skin to fix the outer needle 1, then the inner needle 5 is controlled through the tail base 6, surgery is carried out through the cutting edge 53 of the inner needle 5, and the puncture needle is taken out and cleaned and disinfected after the surgery is finished.

The invention can also be used for treating lumbar disc herniation, the interface on the tailstock 6 can be connected with ion ablation operation equipment, and the interface of the tailstock 6 is electrically connected with the inner needle 5, so that the inner needle 5 becomes a surgical instrument for ion ablation operation; puncture the pjncture needle to the intervertebral disc protrusion position that needs to melt, then take off interior needle 5, to waiting to melt the position and pour into proper amount normal saline into, then insert interior needle 5 outer needle 1 again, and stretch out the tip outer needle 1, and the contact is waited to melt the position, then open equipment, the point discharge of interior needle 5, decompose the normal saline of interior needle 5 point position, the chloride ion that decomposes forms the ionotome, cut the protrusion position and melt into gas, alleviate the nerve oppression, then take out interior needle 5, the gas that will melt out passes through inner shell 12 and discharges, then take off the outer needle again and can accomplish the operation.

Example 2

Referring to fig. 4-5, the present embodiment is different from embodiment 1 in that the present embodiment further includes an inner needle handle 10, one end of the inner needle handle 10 is fixed with a plug 1001, and the plug 1001 is detachably connected to a slot on the base 4, so as to facilitate holding force; a placing hole 1002 is formed in the grab handle 10, the placing hole 1002 penetrates through the plug 1001, a sliding sheet 1005 is connected to one end, far away from the plug 1001, in the placing hole 1002 in a sliding manner, and a spring 1007 is fixedly connected between the sliding sheet 1005 and one end, far away from the plug 1001, of the placing hole 1002; a limit groove 1004 is circumferentially formed in the side wall of the grab handle 10, the limit groove 1004 is communicated with the placing hole 1002, the slide 1005 comprises a central slide positioned in the placing hole 1002 and a side slide fixed with the central slide, and one end of the side slide, which is far away from the central slide, extends out of the grab handle 10 from the limit groove 1004; a top block 1003 is fixed at one end of the sliding piece 1005 close to the plug 1001, and the top block 1003 is detachably connected with an interface on the tailstock 6; a screw 1008 is connected with the inner thread of the sliding sheet 1005, two clamping pins 1009 which move relatively are connected with the screw 1008 through threads, and the tail ends of the two clamping pins 1009 are positioned in the top block 1003 and detachably connected with the inner wall of the interface of the tailstock 6; a nut 1006 is fixed to the end of the screw 1008 extending out of the grip 10.

During the use, put into from plug 1001 with tailstock 6 and place in the hole 1002 and make kicking block 3 stretch into the interface of tailstock 6, then rotate nut 1006 and drive screw 1008 and rotate, two card feet 1009 separate and stretch out kicking block 1003 and push up tightly on the interface lateral wall of tailstock 6, make tailstock 6 and kicking block 1003 fixed, can effectively fix interior needle 5 and grab handle 10, then insert interior needle 5 in outer needle 1, then insert the draw-in groove on base 4 with plug 1001, then adjust the position of gleitbretter 1005, can adjust the position of interior needle 5, all the other methods of use are the same with embodiment 1.

Example 3

Referring to fig. 6, the present embodiment is different from embodiment 2 in that the inner needle 5 is not provided with the empty groove 51, but is provided with a wire cavity 57, an ultrasonic generator 55 is embedded in a solid position of the needle body 52 near the tip, the ultrasonic generator 55 is electrically connected with a wire 56, and the wire is arranged in the wire cavity 57, extends out from the tailstock 6, and is connected with an ultrasonic instrument (prior art, not shown in the figure).

In the embodiment, the functionality of the inner needle 5 is weakened, the use of the inner needle 5 as a sampling needle is eliminated, but by arranging the ultrasonic generator 55, when puncturing is performed, the ultrasonic generator 55 emits ultrasonic waves which penetrate through the needle wall of the inner needle 5, and the outer needle 1 and the human tissue are received by an ultrasonic imaging device (in the prior art, not shown in the figure), so that ultrasonic development is formed.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. An enhanced development puncture needle for ultrasound-guided nerve block, characterized in that: it comprises an outer needle (1), and one end of the outer needle (1) is provided with a cutting edge (8), and the cutting edge ( 8) Inclined arrangement, the other end of the outer needle (1) is fixedly connected with a needle seat;

The outer needle (1) comprises an outer shell (11), an inner shell (12) is arranged in the outer shell (11), and the inner shell (12) is eccentrically fixed to the outer shell (11); the inner shell (11) 12) A cover (14) is fixedly connected with the outer shell (11); a cavity (13) is provided between the inner shell (12) and the outer shell (11), and the cavity (13) ) is filled with gas;

A plurality of reflection grooves (15) are formed on the contact surface array of one end of the outer wall of the inner shell (12) close to the cutting edge (8) and the cavity (13);

An inner needle (5) is detachably connected to the inner casing (12), the outer diameter of the inner needle (5) is adapted to the inner cavity of the inner casing (12), and the inner needle (5) One end of the inner needle (5) is flush with the outer casing (11), the other end of the inner needle (5) penetrates the needle seat and is fixed with a tail seat (6), and the length of the inner needle (5) is greater than that of the outer casing (11) and the length of the needle hub.

2. The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 1, characterized in that: the needle seat comprises a pusher (3), and the pusher (3) is away from the cutting edge (8) A base (4) is rotatably connected to one side of the casing, the casing (11) penetrates the push handle (3) and extends into the base (4), and the casing (11) is fixedly connected to the base (4); An end of the base (4) away from the casing (11) is provided with a card slot, and the card slot is detachably connected to the tailstock (6).

3. The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 2, characterized in that: the outer side of the base (4) is provided with a pointing mark (9), and the direction of the pointing mark (9) is The orientation is arranged in the same direction as the cutting edge (8).

The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 1, characterized in that: the inner needle (5) comprises a needle body (52), and one end of the needle body (52) is connected to The cutting edge (8) is flush, and the needle body (52) is provided with an empty groove (51); the needle body (52) is detachably connected to the inner wall of the inner shell (12).

The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 4, characterized in that: the hollow groove (51) is arranged close to the cutting edge (8), and the hollow groove (51) The bottom surface of the hollow groove is an arc surface, and the two sides of the hollow groove form a needle edge (54).

6 . The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 4 , characterized in that: an edge of one end of the needle body ( 52 ) close to the cutting edge ( 8 ) forms a cutting edge ( 53 ). 7 .

The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 1, characterized in that: the tailstock (6) is provided with an interface, and the interface is electrically connected to the inner needle (5) .

The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 2, characterized in that: the outer casing (11) is provided with a protective sleeve seat (2), and the protective sleeve seat (2) Fixedly connected with the push handle (3), a protective cover (7) is detachably connected to the protective cover seat (2), and the protective cover (7) is sleeved on the outer shell (11).

9. The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 1, characterized in that: a plurality of positioning lines are arranged at intervals on the outer circumference of the outer casing (11), and adjacent to the positioning lines The interval is fixed at 5mm or 10mm.

The enhanced visualization puncture needle for ultrasound-guided nerve block according to claim 1, characterized in that: the cross section of the reflection groove (15) is one or more of a circle, an ellipse, and a polygon kind.