CN111529007A

CN111529007A - Anesthesia injection device

Info

Publication number: CN111529007A
Application number: CN202010434227.2A
Authority: CN
Inventors: 魏云华; 周艳芳; 穆盈盈
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2020-08-14

Abstract

The anesthesia injection device comprises a support plate (100), a puncture needle (200) and a needle feeding part (300), wherein the needle feeding part is arranged on the support plate (100), drives a screw rod structure by a motor (301) to feed the puncture needle (200), and can drive the puncture needle (200) to rotate at the same time. The invention can keep the same needle inserting force of the motor (301) at any rotation angle through the screw rod structure of the needle inserting part (300), and can drive the puncture needle (200) with the needle head being an inclined plane to rotate through the rotation of the motor (301) while the motor (301) drives the screw rod structure to insert the needle, thereby realizing spiral needle inserting. The invention can reduce the pain of the user, reduce the needle insertion difficulty and realize semi-automatic needle insertion through the structure.

Description

Anesthesia injection device

Technical Field

The invention relates to medical equipment, in particular to an injection device for epidural puncture.

Background

Epidural puncture is the basic procedure for performing anesthesia surgery. The patient is put on the medial or lateral approach with the patient lying on his/her side.

The No. 17 puncture needle with inclined needle head is used to puncture the inclined plane and ligamentum flavum into wearing tissue in parallel state, when the puncture force is increased obviously, the needle core of the puncture needle is taken out, and the non-resistance syringe is arranged at the tail of the puncture needle. At this time, the anesthetic can be injected by inserting the catheter into the puncture needle.

Wherein, foretell needle insertion time is long, and the needle insertion degree of difficulty is high, and the needle insertion dynamics is big, and medical personnel twist when the needle insertion makes the tissue of puncture point receive the injury easily to arouse that healing time is long, increase the painful problem of patient.

Therefore, there is a need for an anesthetic injection device that can reduce pain of a user, reduce needle insertion difficulty, and achieve semi-automatic needle insertion.

Disclosure of Invention

The invention aims to provide an anesthesia injection device which can reduce the pain of a user, reduce the needle insertion difficulty and realize semi-automatic needle insertion.

The anesthetic injection device of the invention comprises

The bottom of the supporting plate is connected with the top of the supporting frame;

the needle head of the puncture needle is a bevel needle head;

and a needle feeding part which is arranged on the supporting plate, drives a screw rod structure by a motor to feed the puncture needle, and can drive the puncture needle to rotate at the same time.

The invention relates to an anesthesia injection device, wherein the needle inserting part comprises a motor, a vertical rod, a motor shaft, a lead screw, two nuts, a retainer ring, a guide rail, a first gear and a second gear-driven mechanism,

the lower end of the upright rod is fixed with the bottom of the supporting plate, the top of the supporting plate is fixed with the motor, a motor shaft of the motor is fixed with one end of the lead screw, the lead screw is in threaded connection with two nuts, the two nuts are provided with guide holes moving along the guide rail, and a clamping ring is arranged between the two nuts;

the outer circumferential surface of the puncture needle is fixed with the inner circumferential surface of the retainer ring;

the outer circumference of a motor shaft of the motor is provided with a first gear, the outer circumference of the puncture needle is provided with a second gear mechanism, and the first gear can be meshed with the second gear mechanism.

The invention relates to an anesthetic injection device, wherein a first key is fixed on the outer circumferential surface of a motor shaft of a motor, a first key groove with two through ends is arranged on the inner circumferential surface of a first gear, and the first key is arranged in the first key groove.

The anesthetic injection device of the present invention, wherein the second gear mechanism is a second gear.

The invention discloses an anesthesia injection device, wherein a second gear mechanism comprises a toothed moving rod, a first spring, a first long round hole, a first clamping pin, a first shifting rod, a guide ring, a limiting ring, a second key, an ejector rod, a moving block, an electromagnet and a guide cylinder; one end of the tooth moving rod is hinged with the outer circumferential surface of the puncture needle, the tooth moving rods are uniformly distributed along the circumferential direction of the puncture needle, and the other ends of the tooth moving rods can form a gear structure to be meshed with the first gear;

the middle part of the teethed rod is fixed with one end of the first spring, the other end of the first spring is fixed with the outer circumferential surface of the puncture needle, the teethed rod is provided with a first long circular hole along the length direction of the teethed rod, a first clamp pin moving along the first long circular hole is arranged in the first long circular hole, the first clamp pin is fixed on the first shift lever, the end part of the first shift lever is fixed with the guide ring, the inner circumferential surface of the guide ring surrounds the outer circumferential surface of the puncture needle and moves along the outer circumferential surface of the puncture needle, both sides of the puncture needle in the axial direction of the guide ring are provided with limit rings, the puncture needle is fixed with a second key between the two limit rings, the guide ring is provided with a second key groove matched with the second key, the side surface of the guide ring can be abutted against one end of the ejector rod, and the other end of the ejector rod is fixed with, the movable block is arranged in the guide cylinder and moves along the guide cylinder, the guide cylinder is fixed with the motor, an electromagnet is fixed on the end face of the guide cylinder, the electromagnet can attract the movable block made of the permanent magnet, and the electromagnet can also repel the movable block made of the permanent magnet.

The anesthesia injection device of the present invention, wherein the outer surface of the first key and/or the second key is provided with a rubber layer.

The anesthesia injection device comprises a guide ring, a push rod and a ball head, wherein the push rod is connected with the guide ring through the ball head.

The invention discloses an anesthesia injection device, wherein the support frame is a tripod.

The anesthesia injection device comprises a support frame, a support plate and a support plate, wherein the support frame is provided with four telescopic columns, and the top of each telescopic column is hinged with the support plate.

The anesthesia injection device is different from the prior art in that the motor can always keep the same needle inserting force at any rotation angle through the screw rod structure of the needle inserting part, and the motor can drive the screw rod structure to insert the needle and simultaneously drive the puncture needle with the needle head being an inclined plane to rotate through the rotation of the motor so as to realize spiral needle insertion, so that ligamentum flavum can be punctured conveniently, and the power of the motor in the whole needle inserting process is gradually increased, so that the problems of too much, too little, too fast, too slow puncture and the like are avoided, and the needle inserting failure and the larger tissue damage are avoided. In addition, the needle inlet part is fixed in a supporting plate mode, so that the needle inlet path of the puncture needle is relatively fixed, and more tissues of a patient cannot be damaged due to shaking of an operator. The state of the needle feeding portion for driving the puncture needle to rotate can be switched. The invention can reduce the pain of the user, reduce the needle insertion difficulty and realize semi-automatic needle insertion through the structure.

The anesthetic injection device of the present invention will be further described with reference to the accompanying drawings.

Drawings

FIG. 1 is a front view of an anesthetic injection apparatus;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a usage state change diagram of FIG. 1;

FIG. 4 is a schematic view of a modified construction of FIG. 3;

FIG. 5 is a schematic view of a modified construction of FIG. 1;

FIG. 6 is a change of motion state diagram of FIG. 5;

FIG. 7 is an enlarged view of a portion of FIG. 1;

FIG. 8 is a partial enlarged view of the left side of FIG. 5;

FIG. 9 is a partial enlarged view of the right side of FIG. 5;

fig. 10 is a partial enlarged view of the left side of fig. 6.

Detailed Description

As shown in figures 1-10, referring to figures 1, 2, 3 and 4, the anesthesia injection device of the present invention comprises

A support plate 100, the bottom of which is connected with the top of the support frame 101;

a puncture needle 200, the needle head of which is a bevel needle head;

and a needle feeding unit 300 disposed on the support plate 100, for driving the screw mechanism by the motor 301 to feed the puncture needle 200 and simultaneously rotating the puncture needle 200.

The motor 301 can keep the same needle inserting force at any rotation angle through the screw rod structure of the needle inserting part 300, and the motor 301 can drive the screw rod structure to insert the needle, and simultaneously, the rotation of the motor 301 can drive the puncture needle 200 with the needle head being an inclined plane to rotate, so that the spiral needle inserting is realized, the ligamentum flavum can be punctured, and the power of the motor 301 in the whole needle inserting process is gradually increased, so that the problems of too much, too little, too fast, too slow puncture and the like are avoided, and the needle inserting failure and the larger tissue damage are avoided. The needle insertion portion 300 is fixed by the support plate 100, so that the needle insertion path of the puncture needle 200 is relatively fixed, and the operator does not shake to damage more tissues of the patient. The needle feeding portion 300 can be opened and closed to drive the puncture needle 200 to rotate. The invention can reduce the pain of the user, reduce the needle insertion difficulty and realize semi-automatic needle insertion through the structure.

Wherein, the puncture needle 200 can be a No. 17 puncture needle.

Referring to fig. 1 and 3, the supporting frame 101 may be a tripod, and the supporting frame 101 of the tripod can maintain the supporting plate 100 at any height and angle, and the principle of the supporting frame is similar to that of a camera tripod.

The bottom of the supporting frame 101 may be fixed to the frame by glue, welding, or a non-slip pad.

Wherein the gantry may be a hospital bed or other support.

As a further explanation of the present embodiment, referring to fig. 5, 6, 7 and 8, the needle feeding portion 300 comprises a motor 301, a vertical rod 302, a motor shaft 303, a lead screw 304, two nuts 305, a collar 306, a guide rail 307, a first gear 308, a second gear 309,

the lower end of the upright 302 is fixed to the bottom of the support plate 100, the top of the support plate 100 is fixed to the motor 301, the motor shaft 303 of the motor 301 is fixed to one end of the lead screw 304, the lead screw 304 is in threaded connection with two nuts 305, the two nuts 305 are provided with guide holes 312 moving along the guide rail 307, and a collar 306 is arranged between the two nuts 305;

the outer circumferential surface of the puncture needle 200 is fixed with the inner circumferential surface of the retainer ring 306;

a first gear 308 is disposed on the outer circumferential surface of the motor shaft 303 of the motor 301, a second gear mechanism 309 is disposed on the outer circumferential surface of the puncture needle 200, and the first gear 308 can be engaged with the second gear mechanism 309.

According to the invention, the nut 305 driven by the motor shaft 303 of the motor 301 can move along the length direction of the screw rod 304 and the guide rail 307, and the puncture needle 200 is driven by the clamping ring 306 to insert the needle, so that the stability of inserting the needle is increased, the hand shaking and twisting of an operator are prevented from hurting the subcutaneous tissue of the user, the pain of the user is reduced, the needle inserting difficulty is reduced, and the semi-automatic needle inserting is realized. Further, the puncture needle 200 can be inserted without rotating when the first gear 308 is not engaged with the second gear mechanism 309; when the first gear 308 is engaged with the second gear mechanism 309, the needle can be inserted spirally, so as to puncture the ligamentum flavum with smaller force and complete epidural puncture.

Wherein, whether the first gear 308 is meshed with the second gear mechanism 309 or not can be realized by randomly adjusting the position of the supporting plate 100 or the supporting frame 101 without changing the position of the puncture needle 200 or by adjusting the position of the first gear 308.

When in use, the direction of the inclined plane of the needle head of the puncture needle 200 is firstly configured to be approximately parallel to the ligamentum flavum, and the first gear 308 is not meshed with the second gear mechanism 309, so that the needle head of the puncture needle 200 is not rotated when being inserted, and the inclined plane of the needle head of the puncture needle 200 is always kept parallel to the ligamentum flavum. At this time, the power of the motor 301 is gradually increased, during the process of continuously increasing the power of the motor 301, even if the power of the motor 301 is continuously increased within the preset time and the puncture needle 200 still cannot continuously increase the needle insertion depth, the needle tip inclined plane of the puncture needle 200 can be temporarily determined to be in contact with ligamentum flavum, whether the ligamentum flavum is reached is detected by a non-resistance injector, if the ligamentum flavum reaches, the motor 301 is powered off, the first gear 308 is manually meshed with the second gear 309, a drop of water is arranged at the needle tail of the puncture needle 200, the motor 301 is turned on again, the power of the motor 301 is gradually increased, and therefore the ligamentum flavum is punctured in a spiral needle insertion mode, and when a drop of water is sucked, the motor 301 is powered off, and the epidural puncture is.

The outer circumferential surface of the puncture needle 200 is mounted on the two nuts 305 through bearings, so that the puncture needle 200 is supported by the nuts 305 and can rotate, but the puncture needle 200 can also directly pass through the first through hole 319 of the nut 305 to be rotatable.

In the present invention, the clamping ring 306 clamped by the two nuts 305 means that the two nuts 305 can move along the axial direction of the motor shaft 303 of the motor 301 through a screw structure, and the movement in the axial direction is transmitted to the clamping ring 306, so that the clamping ring 306 can drive the puncture needle 200 to move along the axial direction. And the puncture needle 200 can be freely rotated while being moved in the axial direction by the first through hole 319 or by providing a bearing in the first through hole 319.

As a further explanation of the present embodiment, referring to fig. 7, a first key 310 is fixed on an outer circumferential surface of a motor shaft 303 of the motor 301, a first key groove 311 having both ends penetrating is disposed on an inner circumferential surface of the first gear 308, and the first key 310 is disposed in the first key groove 311.

In the present invention, the position of the first gear 308 in the axial direction can be freely adjusted by the first key 310 and the first key groove 311 having both ends penetrating therethrough, so that the first gear 308 can be freely switched between whether or not it is engaged with the second gear 309, and the puncture needle 200 can be freely switched between the non-rotational type and the screw type needle insertion.

Of course, the outer circumferential surface of the motor shaft 303 of the motor 301 may be directly fixed to the first gear 308, and the first gear 308 may be switched to be engaged with the second gear 309 by adjusting the position of the support plate 100 or the support frame 101.

As a further explanation of the present embodiment, referring to fig. 7, the second gear mechanism 309 is a second gear.

The invention can ensure that the puncture needle 200 keeps rotating while inserting the needle through the meshing of the first gear 308 and the second gear.

As a further explanation of the present embodiment, as shown in fig. 5 to 10, referring to fig. 8 and 9, the second gear mechanism 309 includes a toothed bar 321, a first spring 322, a first long circular hole 323, a first latch 324, a first shift lever 325, a guide ring 326, a limit ring 327, a second key 328, a top rod 329, a moving block 330, an electromagnet 331, and a guide cylinder 332; one end of the tooth moving rod 321 is hinged with the outer circumferential surface of the puncture needle 200, the tooth moving rods 321 are uniformly distributed along the circumferential direction of the puncture needle 200, and the other ends of the tooth moving rods 321 can form a gear structure to be meshed with the first gear 308;

the middle part of the teethed rod 321 is fixed with one end of the first spring 322, the other end of the first spring 322 is fixed with the outer circumference of the puncture needle 200, the teethed rod 321 is provided with a first long circular hole 323 along the length direction thereof, a first bayonet 324 moving along the first long circular hole 323 is arranged in the first long circular hole 323, the first bayonet 324 is fixed on the first poking rod 325, the end part of the first poking rod 325 is fixed with the guide ring 326, the inner circumference surface of the guide ring 326 surrounds the outer circumference surface of the puncture needle 200 and moves along the outer circumference surface, both sides of the puncture needle 200 in the axial direction of the guide ring 326 are provided with a limit ring 327, the puncture needle 200 is provided with a second key 328 between the two limit rings 327, the guide ring 326 is provided with a second keyway 339 matching with the second key 328, the side surface of the guide ring 326 can be abutted against one end of the push rod 329, the other end of the push rod 329 is fixed to the moving block 330, the moving block 330 is disposed in and moves along the guide cylinder 332, the guide cylinder 332 is fixed to the motor 301, an electromagnet 331 is fixed to an end surface of the guide cylinder 332, the electromagnet 331 can attract the moving block 330 made of a permanent magnet, and the electromagnet 331 can also repel the moving block 330 made of a permanent magnet.

According to the invention, the push rod is contracted through the power failure or the attraction of the moving block 330 and the electromagnet 331, when the guide ring 326 moves to a limit ring 327 along the puncture needle 200 and the second key 328, the tooth moving rod 321 is caused to realize a contraction state through the contraction force of the first spring 322, the contraction state can be that the tooth moving rod 321 is approximately parallel to the puncture needle 200, and under the above state, the gear structure formed by a plurality of tooth moving rods 321 cannot be meshed with the first gear 308, and the puncture needle 200 can only complete the non-rotary needle insertion through the screw rod structure; when the electromagnet 331 repels the moving block 330, the end of the moving block 330 abuts against the guide ring 326, and the guide ring 326 moves to another limit ring 327 along the outer circumferential surface of the puncture needle 200 and the second key 328, the first shift lever 325 overcomes the pulling force of the first spring 322 by the toothed moving lever 321 through the first bayonet 324 to realize the unfolding state which is approximately perpendicular to the puncture needle 200, so that the gear mechanism formed by the plurality of toothed moving levers 321 is meshed with the first gear 308, and the first gear 308 drives the gear structure formed by the second gear mechanism 309 to realize the spiral needle feeding of the puncture needle 200.

Referring to fig. 9, a limiting snap ring 333 is disposed at an opening of the guide cylinder 332, which is far away from the motor 301, and the limiting snap ring 333 is used for limiting the moving block 330 in the repelling state.

The electromagnet 331 is connected to a power module through a wire, the motor 301 may also be connected to the power module through a wire, the power module may be disposed on the rack, the power module may also be disposed in the guide cylinder 332, and the power module may be a battery or a battery with a circuit board. The circuit board can manually control the current magnitude and the current direction.

Referring to fig. 9, the guide cylinder 332 is fixed to the housing of the motor 301, and may be fixed to the vertical rod 302.

Referring to fig. 8, the first pins 324 of the toothed moving rods 321 in each row are fixed to the same first toggle lever 325, and the first toggle levers 325 are fixed to the guide ring 326.

Wherein, referring to fig. 8 and 10, when the plurality of teethed levers 321 are in the unfolded state, the teethed levers can be meshed with the first gear 308, and the meshing condition is satisfied; when the plurality of toothed moving bars 321 are brought into a contracted state by the first springs 322, the plurality of toothed moving bars 321 cannot contact the first gear 308 and thus cannot be engaged.

The meshing conditions include that the reference circles are consistent, the wheel base is larger than the sum of the outer diameters of the two teeth, and/or the gear structure formed by the plurality of toothed movable rods 321 has the same module as that of the first gear 308.

As a further explanation of this embodiment, the outer surface of the first key 310 and/or the second key 328 is configured with a rubber layer.

According to the present invention, the rubber layer can reduce friction between the first key groove 311 of the first gear 308 contacting the first key 310 and/or the second key groove 339 of the guide ring 326 contacting the second key 328, or the rubber layer can form a clearance fit or an interference fit, thereby preventing the first gear 308 and/or the guide ring 326 of the puncture needle 200 from being undesirably displaced due to the inclination of the puncture needle 200 during a bypass or other needle insertion.

As a further explanation of this embodiment, referring to fig. 8 and 10, a ball 338 is disposed at one end of the ejector 329, and the ejector 329 is overlapped with the guide ring 326 via the ball 338.

The present invention can reduce the resistance between the pin 329 and the guide ring 326 in the rotating state by the ball 338.

Wherein the ball 338 may be made of vertical or iron or stainless steel.

As a further explanation of the present embodiment, referring to fig. 1, 3 and 4, the supporting frame 101 is a tripod.

The invention uses the tripod form similar to the camera as the support frame 101 to fix the support plate 100, so as to ensure that the puncture needle 200 can be inserted at any angle.

Wherein, the bottom of the tripod can be fixed with the frame through glue or welding or adhesive tape.

Referring to fig. 2, 5 and 6 for further explanation of the present embodiment, the supporting frame 101 is four telescopic columns hinged to the top of the supporting plate 100.

The invention can adjust the height and angle of the puncture needle 200 at will through the four telescopic columns connected by the hinges to adapt to the needle insertion at different positions.

The above-mentioned 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 solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. An anesthetic injection apparatus, comprising: comprises that

A support plate (100) the bottom of which is connected with the top of the support frame (101);

a puncture needle (200) with a bevel needle head;

and a needle feeding part (300) which is arranged on the support plate (100), drives a screw rod structure by a motor (301) to feed the puncture needle (200), and can drive the puncture needle (200) to rotate at the same time.

2. The anesthetic injection apparatus of claim 1, wherein: the supporting frame (101) is a tripod.

3. The anesthetic injection apparatus of claim 1, wherein: the support frame (101) is four telescopic columns hinged with the top and the support plate (100).

4. The anesthetic injection apparatus of claim 3, wherein: the needle feeding part (300) comprises a motor (301), a vertical rod (302), a motor shaft (303), a lead screw (304), two nuts (305), a clamping ring (306), a guide rail (307), a first gear (308) and a second gear mechanism (309),

the lower end of the vertical rod (302) is fixed with the bottom of the support plate (100), the top of the support plate (100) is fixed with the motor (301), a motor shaft (303) of the motor (301) is fixed with one end of the lead screw (304), the lead screw (304) is in threaded connection with two nuts (305), the two nuts (305) are provided with guide holes (312) moving along the guide rail (307), and a clamping ring (306) is arranged between the two nuts (305);

the outer circumferential surface of the puncture needle (200) is fixed with the inner circumferential surface of the retainer ring (306);

the puncture needle is characterized in that a first gear (308) is arranged on the outer circumferential surface of a motor shaft (303) of the motor (301), a second gear mechanism (309) is arranged on the outer circumferential surface of the puncture needle (200), and the first gear (308) can be meshed with the second gear mechanism (309).

5. The anesthetic injection apparatus of claim 4, wherein: a first key (310) is fixed on the outer circumferential surface of a motor shaft (303) of the motor (301), a first key groove (311) with two through ends is arranged on the inner circumferential surface of the first gear (308), and the first key (310) is arranged in the first key groove (311).

6. The anesthetic injection apparatus of claim 5, wherein: the second gear mechanism (309) is a second gear.

7. The anesthetic injection apparatus of claim 5, wherein: the second tooth moving mechanism (309) comprises a tooth moving rod (321), a first spring (322), a first long round hole (323), a first clamping pin (324), a first moving rod (325), a guide ring (326), a limiting ring (327), a second key (328), a push rod (329), a moving block (330), an electromagnet (331) and a guide cylinder (332); one end of the toothed moving rod (321) is hinged with the outer circumferential surface of the puncture needle (200), the toothed moving rods (321) are uniformly distributed along the circumferential direction of the puncture needle (200), and the other ends of the toothed moving rods (321) can form a gear structure to be meshed with the first gear (308);

the middle part of the teethed rod (321) is fixed with one end of the first spring (322), the other end of the first spring (322) is fixed with the outer circumferential surface of the puncture needle (200), the teethed rod (321) is provided with a first long circular hole (323) along the length direction thereof, a first bayonet (324) moving along the first long circular hole is arranged in the first long circular hole (323), the first bayonet (324) is fixed on the first poking rod (325), the end part of the first poking rod (325) is fixed with the guide ring (326), the inner circumferential surface of the guide ring (326) surrounds the outer circumferential surface of the puncture needle (200) and moves along the outer circumferential surface, both sides of the puncture needle (200) in the axial direction of the guide ring (326) are provided with limit rings (327), and the puncture needle (200) is fixed with a second key (328) between the two limit rings (327), the guide ring (326) is provided with a second key groove (339) matched with the second key (328), the side surface of the guide ring (326) can be abutted against one end of the ejector rod (329), the other end of the ejector rod (329) is fixed with the moving block (330), the moving block (330) is arranged in the guide cylinder (332) and moves along the guide cylinder, the guide cylinder (332) is fixed with the motor (301), the end surface of the guide cylinder (332) is fixed with an electromagnet (331), the electromagnet (331) can attract the moving block (330) made of the permanent magnet, and the electromagnet (331) can also repel the moving block (330) made of the permanent magnet.

8. The anesthetic injection apparatus of claim 7, wherein: the outer surface of the first key (310) and/or the second key (328) is provided with a rubber layer.

9. The anesthetic injection apparatus of claim 8, wherein: one end of the ejector rod (329) is provided with a ball head (338), and the ejector rod (329) is overlapped with the guide ring (326) through the ball head (338).