CN113599623A

CN113599623A - Disposable needle-prick-prevention light-shading remaining needle and using method thereof

Info

Publication number: CN113599623A
Application number: CN202110879147.2A
Authority: CN
Inventors: 匡志民; 匡雨轩; 王发善
Original assignee: Heilongjiang Bokangda Medical Technology Co ltd
Current assignee: Heilongjiang Bokangda Medical Technology Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-11-05
Anticipated expiration: 2041-08-02
Also published as: CN113599623B

Abstract

The invention relates to the technical field of medical instruments, in particular to a disposable needle-prick-prevention light-shading indwelling needle, which comprises a transparent tee joint and an indwelling hose, wherein a metal needle tube is arranged between the transparent tee joint and the indwelling hose in a penetrating manner, the tail end of the transparent tee joint is connected with a reusable safe needle-pulling component, the reusable safe needle-pulling component comprises a clamping-type shell, a needle tube ejecting mechanism and an automatic needle-pulling executing mechanism, the automatic needle-pulling executing mechanism is connected with the needle tube ejecting mechanism in a matching manner, and the automatic needle-pulling executing mechanism is connected with a tail seat at the tail end of the metal needle tube through a movable clamping seat. Avoid manual operation, it is safer convenient.

Description

Disposable needle-prick-prevention light-shading remaining needle and using method thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to a disposable needle-stick-injury-preventing light-shielding remaining needle and a using method thereof.

Background

The use of remaining needle can reduce the misery that the infant caused because of relapse venipuncture and the fear of making a needle, alleviate the headings's anxiety, the clinical medicine of being convenient for, urgent, critical patient's rescue is used medicine, alleviate nurse's work load, it is painful to reduce the infant, therefore the vein is kept somewhere the needle and is being used widely in clinic, in the face of this special colony of infant, the length of vein is kept somewhere needle and the comfort of infant becomes nurse and the headings's problem of paying attention to, also is the prerequisite of sign and popularization that the needle of keeping somewhere was used successfully.

The chinese patent publication No. CN107050567A discloses a needle-prick prevention indwelling needle, the invention provides a needle-prick prevention indwelling needle, comprising: a catheter hub; the needle seat is slidably sleeved on the catheter seat; the needle tube is arranged on the needle base, and the needle tip can penetrate out of the catheter base; the protection mechanism is arranged between the catheter seat and the needle seat and consists of a protection seat and a protection sheet arranged on the protection seat; the protection seat is provided with a protection seat body through which the needle tube can pass, and an accommodating cavity of the accommodating part needle tube is formed in the protection seat body; the protection sheet is provided with a protection sheet main body, and one end of the protection sheet main body is formed with a blocking sheet accommodated in the accommodating cavity; the blocking piece has a first state of abutting against the needle tube and a second state of blocking the needle tip; the supporting structure is arranged in the accommodating cavity and applies a supporting force to the needle tube, wherein the supporting force is opposite to the abutting force applied by the blocking piece in direction. The invention applies a supporting force to the needle tube opposite to the pressing force applied by the blocking piece through the supporting structure, so that the needle tube is not easy to deform under the pressing of the blocking piece.

Although the above patent can solve some problems, the following problems still remain:

(1) the remaining needle has a complex anti-acupuncture structure, the manufacturing cost is too high, and the protective seat and the protective plate in the anti-acupuncture structure need to be in sliding contact with the front end of the needle tube, while the front end of the needle tube contacts blood, so that the anti-acupuncture structure part of the remaining needle can be used only once, and is very waste.

(2) Although the front end of screening glass has been formed to the front end of needle tubing and has been blockked, makes the front end of needle tubing can not stab out the front side of protection seat, but the needle tubing has the risk of taking out from the rear side of protection seat, takes out from for preventing that the needle tubing from the round hole department of protection seat and screening glass tail end, has set up the arch on the outer wall of needle tubing front end, and bellied part leads to the outer wall structure of needle tubing not smooth on the needle tubing outer wall, can increase uncomfortable sense when pricking patient's health.

(3) After the needle tube is pulled out, the needle-prick prevention structure only protects the front end and the needle tip part of the needle tube, and the middle part of the needle tube is exposed, so that the risk still exists.

(4) The needle pulling process needs manual operation, and the operation process needs a hand to hold the front portion of the remaining needle, and a hand to pull out the rear portion, and the operation is performed by two hands, so that the operation is inconvenient.

(5) For some novice nurses, the operation is not skilled, the hand stability is poor when the needle is pulled out, and the discomfort and even pain of the patient can be caused.

Disclosure of Invention

The invention aims to provide a disposable needle-stick-injury-preventing light-shielding indwelling needle and a using method thereof, which aim to solve the problems in the background technology.

The technical scheme of the invention is as follows: the utility model provides a needle-prick prevention light-resistant needle of keeping somewhere of disposable, includes transparent tee bend and keeps somewhere the hose, transparent tee bend wears to be equipped with the metal needle pipe with the centre of keeping somewhere the hose, the trailing end connection of transparent tee bend has the safe subassembly of pulling out of reuse type, and the safe subassembly of pulling out of reuse type includes joint formula casing, needle pipe pop-up mechanism and pulls out needle actuating mechanism automatically, wherein pulls out needle actuating mechanism automatically and is connected with the cooperation of needle pipe pop-up mechanism, and pulls out needle actuating mechanism automatically and be connected with the tailstock of metal needle pipe tail end through movable joint seat.

Preferably, in the tail end of locating transparent tee bend is inserted to the one end of joint formula casing, and the joint formula casing inserts and encircles on locating the one end outer wall in the transparent tee bend and be equipped with the arc arch, it is equipped with the arc recess to encircle on the inner wall of transparent tee bend tail end, this arc recess with the bellied structure phase-match of arc.

Preferably, the automatic needle pulling actuating mechanism comprises a track, a supporting shaft, a driving motor and a connecting strip, the track is arranged in an inner cavity of the clamping type shell, one end of the connecting strip is fixedly connected to the outer wall of the bottom of the track, the other end of the connecting strip penetrates through one side outer wall of a bar-shaped through hole fixedly connected with movable clamping seat on the side wall of the clamping type shell, the two ends of the track are respectively connected with the supporting shaft, and the outer wall of the clamping type shell is connected with the driving motor through one end of the supporting shaft of one end of the track.

Preferably, a bar-shaped round hole is formed in the clamping type shell, a bar-shaped opening is formed in the bottom of the bar-shaped round hole, the movable clamping seat is slidably arranged in the bar-shaped round hole, a through hole is formed in the middle of the movable clamping seat, 2 clamping strips are hinged in the through hole, two ends of a spring piece are connected between the 2 clamping strips in a supporting mode, the spring piece is V-shaped, and two ends of the 2 clamping strips respectively protrude out of the outer walls of two sides of the movable clamping seat;

one side of the tailstock far away from the metal needle tube is provided with a strip-shaped groove which is through from top to bottom, and the structure of the strip-shaped groove is matched with the structure of the outer wall of one side of the clamping strip protruding out of the movable clamping seat.

Preferably, the needle tube ejecting mechanism comprises a gear shaft, a clockwork spring, a rotary sleeve ring and a thimble strip, one end of the thimble strip is fixedly connected with the outer wall of one side of the rotary sleeve ring, a rotary shaft part which is rotatably connected with the gear shaft is arranged in the middle of the rotary sleeve ring in a penetrating manner, and the clockwork spring is connected between the outer wall of the rotary shaft part of the gear shaft and the inner wall of the rotary sleeve ring;

the middle part of the thimble strip is provided with a bending convex structure, and the position of the bending convex structure corresponds to the position of one end of the strip-shaped round hole on the clamping type shell, which is far away from the transparent tee joint.

Preferably, a gear ring is arranged on the outer wall of one side of the rotating sleeve ring, the diameter of a gear part of the gear shaft is the same as that of the gear ring, and a first rack and a second rack which are different in length are respectively arranged on the outer wall of the top of the crawler belt, wherein the first rack which is longer in length is matched with the gear part of the gear shaft in structure, and the second rack which is shorter in length is matched with the gear ring in structure;

one end of the thimble strip, which is far away from the rotary lantern ring, is connected with the upper end of a clamping piece in a matching manner, the lower end of the clamping piece is fixedly connected with a jacking seat, and the structure of the jacking seat is matched with that of the movable clamping seat.

Preferably, the upper end of the clamping piece is of a horizontal structure, and one side, close to the thimble strips, of the upper end of the clamping piece is of an inclined structure.

Preferably, one side of the top support seat close to the movable clamping seat is of a conical structure, the other end of the top support seat is connected with one end of a return spring, and the other end of the return spring is connected with the inner wall of one side of the clamping type shell.

Preferably, the tail end of the transparent tee joint is provided with a circular sealing cover, and the structure of the sealing cover is in clamping fit with the tail end of the transparent tee joint;

and a battery jar is arranged on one side of the clamping type shell.

The invention also discloses a using method of the disposable needle-prick-prevention light-shading remaining needle, which comprises the following steps:

s1, assembling the clamping shell and the transparent tee joint into a whole in advance, and then pricking the metal needle tube into the blood vessel of the patient body by holding the whole;

s2, after the insertion is finished, starting the automatic needle pulling executing mechanism to perform a section of operation, and automatically pulling out the metal needle tube to temporarily reserve the metal needle tube in the clamping type shell;

s3, grasping the transparent tee joint to keep the transparent tee joint in a positioning state, then pulling out the clamping type shell temporarily clamped and combined with the transparent tee joint, and keeping the transparent tee joint and the remaining hose on the body of the patient;

s4, aligning the bottom of the clamping type shell with the metal needle tube to a sharps box, starting the automatic needle pulling executing mechanism to operate in two stages, and enabling the needle tube popping mechanism to pop and separate the metal needle tube temporarily retained in the clamping type shell into the sharps box;

s5, starting the automatic needle pulling executing mechanism to operate in three stages to make the needle tube ejecting mechanism in the clamping shell return to the initial state, which is convenient for recycling.

The invention provides a disposable needle-stick-injury-preventing light-shielding indwelling needle through improvement, which has the following improvement and advantages compared with the prior art:

one is as follows: according to the invention, the metal needle tube can be automatically pulled out through the needle tube ejection mechanism and the automatic needle pulling execution mechanism in the reusable safe needle pulling assembly, the reusable safe needle pulling assembly is not in direct contact with the part of the metal needle tube, which is in contact with blood, so that the needle tube can be reused, and the needle tube ejection mechanism can automatically eject and take down the pulled metal needle tube, so that manual operation is avoided, and the needle tube is safer and more convenient;

the second step is as follows: according to the invention, after the front end of the clamping type shell is inserted into the circular hole at the tail end of the transparent tee joint, the arc-shaped bulge at the front end of the clamping type shell can be clamped into the arc-shaped groove at the tail end of the transparent tee joint, and the clamping type shell can be temporarily connected to the tail end of the transparent tee joint through the clamping acting force of the arc-shaped bulge and the arc-shaped groove, so that the subsequent needle pulling operation is facilitated;

and thirdly: according to the invention, the driving motor can drive the supporting shaft to rotate after running, the supporting shaft drives the crawler to rotate, the movable clamping seat can be driven to linearly move by utilizing the rotation of the crawler, and the movable clamping seat can be connected with the tail seat at the tail end of the metal needle tube, so that the metal needle tube can be driven by the driving motor and automatically pulled out, compared with the traditional manual needle pulling mode, the needle pulling device has the advantages of being more stable, the pain of a patient caused by unstable hand shaking during needle pulling caused by novice nurses and human errors is avoided, the automatic needle pulling mechanism can be operated through a button, an operator only needs to hold an indwelling needle with one hand, the needle pulling operation can be realized, and in a complicated medical environment, one hand of a medical worker is liberated, so that the medical worker can handle more accidental situations, for example, the patient is pacified with one hand by pulling the needle with one hand;

fourthly, the method comprises the following steps: according to the invention, the strip-shaped round hole in the clamping-type shell is used for temporarily accommodating the metal needle tube after being drawn out, and the whole length area of the metal needle tube is shielded, so that the metal needle tube can be prevented from being exposed to accidentally injure related personnel, the metal needle tube is connected with the movable clamping-type seat through the tailstock, so that the metal needle tube body is not in contact with the clamping-type shell, the metal needle tube in the indwelling needle, which is in contact with blood, is separated, other parts cannot be polluted, the aim of not recycling the parts in contact with blood is achieved, and 2 clamping strips are clamped into the strip-shaped groove of the tailstock under the support of the V-shaped spring leaf, so that the elastic clamping is realized, the temporary connection stability can be ensured under the action of elasticity, and when the tail seat is required to be separated, the tail seat and the movable clamping-type seat can be conveniently released by compressing the spring leaf;

and fifthly: in the invention, the gear shaft can accumulate the power of the clockwork spring through rotation, and further the rotary lantern ring accumulates the rotary stress, and the thimble strips and the rotary lantern ring are fixedly connected, so the thimble strips can accumulate the rotary kinetic energy under the rotary action of the gear shaft; when the thimble strips downwards rotate under the elastic action of the clockwork spring, the bent convex structures can be used for jacking one end of the strip-shaped round hole on the clamping type shell, which is far away from the transparent tee joint, and the metal needle tubes temporarily stored in the strip-shaped round holes are jacked out, so that the effect of automatically popping the metal needle tubes is realized, manual taking-out is not needed, and the thimble strips are more convenient and safe;

and the sixth step: in the invention, the first rack and the second rack synchronously move along with the rotation of the crawler, and the first rack and the second rack can respectively drive the gear shaft and the gear ring to rotate, when the crawler rotates anticlockwise to drive the movable clamping seat at the bottom to move towards the right side of the clamping type shell, when the metal needle tube is pulled out, the first rack at the top of the crawler moves leftwards, so that the gear shaft meshed and connected with the first rack rotates clockwise, the clockwork spring is pressurized and wound, and continuously stores strength, in the process, because the second rack is a convex tooth structure inclined towards one side, the second rack can slide away from the bottom of the gear ring, so that the gear ring cannot be driven to rotate clockwise, when the movable clamping seat moves to press at the position of the jacking seat, one end of the 2 clamping bars, which protrudes out of the movable clamping seat, can be propped away by the jacking seat, so that the other ends of the 2 clamping bars approach each other, and the 2 clamping bars and the tailstock are loosened, then the movable clamping seat continues to move towards the jacking seat, the jacking seat is supported by a return spring and is movable, so that the jacking seat can continue to move rightwards, the jacking seat drives the clamping piece at the top to move synchronously, the upper end of the clamping piece is pulled away from the position below the right end of the thimble strip, the right end of the thimble strip loses support clamping position, the thimble strip can rapidly rotate and bounce downwards due to the fact that the thimble strip obtains the rotational kinetic energy accumulated during pressure winding of the spring, and downward jacking elastic force is applied to the metal needle tube which is loosely connected with the movable clamping seat, so that the thimble strip is popped out and separated from the strip-shaped opening at the bottom of the strip-shaped round hole in the clamping shell, automatic metal popping is achieved, manual separation is not needed, and the needle tube is convenient and safe;

and the seventh step: according to the invention, when the crawler rotates clockwise, the bottom of the crawler moves from right to left to drive the movable clamping seat to move towards the left end of the clamping type shell, so that the movable clamping seat returns to the original position, meanwhile, the top of the crawler moves from left to right, the first rack at the top of the crawler moves from left to right to drive the gear shaft to rotate anticlockwise, so that the spring is loose, the second rack can drive the gear ring to rotate anticlockwise, the gear ring drives the rotating lantern ring to rotate anticlockwise for a moving angle, the ejector pin rotates anticlockwise and upwards, and after the right end of the ejector pin rotates to a height higher than the upper end of the clamping piece, the clamping piece can clamp and limit the ejector pin again and returns to the initial state, so that the clamping piece can be conveniently recycled.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a front view of the internal structure of the present invention;

FIG. 2 is a top view of the internal structure of the reusable safety needle-pulling device of the present invention;

FIG. 3 is a side view of the internal structure of the reusable safety needle-pulling device of the present invention;

FIG. 4 is a rear view of the internal structure of the reusable safety needle-pulling device of the present invention;

FIG. 5 is a cross-sectional view of the rotating collar of the present invention;

FIG. 6 is a cross-sectional view of the tailstock and the movable clamping seat connecting structure of the present invention;

FIG. 7 is a side view of the foot block of the present invention;

FIG. 8 is an elevational view of the metallic needle cannula and tailstock of the present invention;

FIG. 9 is a side view of the removable cartridge of the present invention;

FIG. 10 is a side elevational view of the detent and top mount of the present invention;

FIG. 11 is a second rack elevation view of the present invention;

FIG. 12 is a front view of the transparent tee and closure of the present invention;

FIG. 13 is a side view of a transparent tee of the present invention;

FIG. 14 is an elevational view of the metallic needle cannula of the present invention in an extracted state;

fig. 15 is an elevational view of a metal needle cannula of the present invention in an ejected condition.

Description of reference numerals: 1. an indwelling hose, 2, a metal needle tube, 21, a tailstock, 3, a transparent tee joint, 31, a sealing cover, 4, a reusable safety needle pulling assembly, 41, a clamping type shell, 411, a battery jar, 42, a needle tube ejecting mechanism, 421, a gear shaft, 422, a spring, 423, a rotating lantern ring, 424, a thimble strip, 425, a clamping piece, 426, a jacking seat, 427, a return spring, 428, a toothed ring, 43, an automatic needle pulling executing mechanism, 431, a crawler belt, 432, a supporting shaft, 433, a first rack, 434, a second rack, 435, a driving motor, 436, a connecting strip, 44, a movable clamping seat, 441, a clamping strip, 442 and a spring strip.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, 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.

The invention provides a disposable needle-stick-injury-preventing light-shielding remaining needle and a using method thereof through improvement, and the technical scheme of the invention is as follows:

the first embodiment is as follows:

as shown in fig. 1-15, a disposable needle-prick-proof light-proof indwelling needle comprises a transparent tee 3 and an indwelling hose 1, wherein the transparent tee 3 is made of dark light-proof material to achieve the purpose of avoiding light, a metal needle tube 2 penetrates through the middle of the transparent tee 3 and the indwelling hose 1, the tail end of the transparent tee 3 is connected with a reusable safe needle-pulling assembly 4, the reusable safe needle-pulling assembly 4 comprises a clamping-type shell 41, a needle tube ejecting mechanism 42 and an automatic needle-pulling executing mechanism 43, wherein the automatic needle-pulling executing mechanism 43 is connected with the needle tube ejecting mechanism 42 in a matching manner, and the automatic needle-pulling executing mechanism 43 is connected with a tail base 21 at the tail end of the metal needle tube 2 through a movable clamping seat 44.

The needle tube ejecting mechanism 42 and the automatic needle pulling executing mechanism 43 in the reusable safe needle pulling assembly 4 can realize automatic pulling of the metal needle tube 2, the reusable safe needle pulling assembly 4 is not in direct contact with the part of the metal needle tube 2 contacting blood, so that the needle tube ejecting mechanism 42 can be reused, the pulled metal needle tube 2 can be ejected automatically, manual operation is avoided, and the needle tube ejecting mechanism is safer and more convenient.

One end of the clamping type shell 41 is inserted into the tail end of the transparent tee joint 3, the tail end of the transparent tee joint 3 is a round hole, an arc-shaped bulge is arranged on the outer wall of one end, inserted into the transparent tee joint 3, of the clamping type shell 41 in an encircling mode, an arc-shaped groove is arranged on the inner wall of the tail end of the transparent tee joint 3 in an encircling mode, and the arc-shaped groove is matched with the arc-shaped bulge in structure; after the front end of joint formula casing 41 inserted the downthehole back of the circle of 3 tail ends of transparent tee bend, the arc arch of joint formula casing 41 front end can the block get into the arc recess of 3 tail ends of transparent tee bend, through the joint effort of arc arch and arc recess, lets joint formula casing 41 can connect temporarily in the tail end of transparent tee bend 3, makes things convenient for follow-up needle operation of pulling out.

The automatic needle pulling actuating mechanism 43 comprises a crawler belt 431, a support shaft 432, a driving motor 435 and a connecting strip 436, the crawler belt 431 is arranged in an inner cavity of the clamping type shell 41, the crawler belt 431 is made of silica gel and is safe and environment-friendly, the outer wall of the bottom of the crawler belt 431 is fixedly connected with one end of the connecting strip 436, the connecting strip 436 is fixedly connected with the crawler belt 431 through hot melting, the other end of the connecting strip 436 penetrates through a strip-shaped through hole in the side wall of the clamping type shell 41 and is fixedly connected with the outer wall of one side of a movable clamping seat 44, the connecting strip 436 and the movable clamping seat 44 are integrally formed through production and injection molding, the two ends of the crawler belt 431 are respectively connected with the support shaft 432, the two ends of the crawler belt 431 are respectively sleeved on the support shafts 432, any support shaft 432 can drive the crawler belt 431 to rotate, the support shaft 432 is rotatably connected with the side wall of the clamping type shell 41 through a shaft sleeve, and one end of the support shaft 432 at one end of the crawler belt 431 penetrates through the outer wall of the clamping type shell 41 and is connected with the driving motor 435, the driving motor 435 is a miniature servo motor and has a shutdown self-locking function, and the driving motor 435 is fixed outside the clamping type shell 41 through rivet connection; the driving motor 435 can drive the supporting shaft 432 to rotate after operating, the supporting shaft 432 drives the caterpillar 431 to rotate, the movable clamping seat 44 can be driven to move linearly by the rotation of the caterpillar 431, the movable clamping seat 44 can be connected with the tail seat 21 at the tail end of the metal needle tube 2, therefore, the metal needle tube 2 can be driven by the driving motor 435 to be automatically pulled out, which not only has the advantage of being more stable compared with the traditional manual needle pulling mode, but also avoids the pain of the patient caused by unstable hand shaking when the needle is pulled out by a novice nurse and a human error, the automatic needle pulling mechanism can be operated by a button, an operator can realize the needle pulling operation by only holding the remaining needle with one hand, in a complex medical environment, one hand of a medical worker is liberated, and the medical worker can handle more accidents, such as pulling a needle with one hand and pacifying a patient with the other hand.

A strip-shaped circular hole is formed in the clamping type shell 41, a strip-shaped opening is formed in the bottom of the strip-shaped circular hole, the movable clamping seat 44 is arranged in the strip-shaped circular hole in a sliding mode, a through hole is formed in the middle of the movable clamping

seat

44, 2 clamping strips 441 are hinged in the through hole, two ends of a spring piece 442 are connected between the 2 clamping strips 441 in a supporting mode, the spring piece 442 is V-shaped, and two ends of the 2 clamping strips 441 respectively protrude out of the outer walls of two sides of the movable clamping seat 44; the strip-shaped round hole is used for temporarily taking out and accommodating the metal needle tube 2, and shields the whole length area of the metal needle tube 2, so that the metal needle tube 2 can be prevented from being exposed to accidentally injure related personnel;

a strip-shaped groove which is through up and down is arranged on one side of the tailstock 21, which is far away from the metal needle tube 2, and the structure of the strip-shaped groove is matched with the structure of the outer wall of one side, protruding out of the movable clamping seat 44, of the 2 clamping strips 441; the metal needle tube 2 is connected with the movable clamping seat 44 through the tailstock 21, so that the body of the metal needle tube 2 is not in contact with the clamping type shell 41, the metal needle tube 2 in contact with blood in an indwelling needle is separated, other parts cannot be polluted, the aim of not recycling the parts in contact with the blood is fulfilled, and the 2 clamping strips 441 are clamped into the strip-shaped groove of the tailstock 21 under the support of the V-shaped spring sheet 442, so that the clamping is elastic, the temporary connection stability can be ensured under the action of elasticity, and when the tailstock 21 needs to be separated, the tailstock 21 and the movable clamping seat 44 are conveniently promoted to be loosened through contraction of the compression spring sheet 442.

The needle tube ejecting mechanism 42 comprises a gear shaft 421, a clockwork spring 422, a rotary sleeve ring 423 and a thimble strip 424, one end of the thimble strip 424 is fixedly connected with the outer wall of one side of the rotary sleeve ring 423, the thimble strip 424 and the rotary sleeve ring 423 are of an integral structure, a rotary shaft part which is rotatably connected with the gear shaft 421 is arranged in the middle of the rotary sleeve ring 423 in a penetrating manner, the gear shaft 421 consists of a rotary shaft in the middle and uniformly-surrounded convex teeth on the outer wall, the clockwork spring 422 is connected between the outer wall of the rotary shaft part of the gear shaft 421 and the inner wall of the rotary sleeve ring 423, one end of the middle of the clockwork spring 422 is fixedly clamped with the gear shaft 421, and one end of the outer wall of the clockwork spring 422 is fixedly clamped with the inner wall of the rotary sleeve ring 423; the gear shaft 421 can accumulate power to the spring 422 through rotation, and further the rotary collar 423 accumulates rotary stress, and the thimble strip 424 and the rotary collar 423 are fixedly connected, so the thimble strip 424 can accumulate rotary stress under the rotary action of the gear shaft 421;

the middle part of the thimble strip 424 is provided with a bending convex structure, and the position of the bending convex structure corresponds to one end position of the strip-shaped round hole on the clamping type shell 41 far away from the transparent tee joint 3; when thimble strip 424 is rotatory downwards under clockwork 422's spring action, can utilize the protruding structure of buckling to push up into the one end position that transparent tee bend 3 was kept away from to the bar round hole on joint formula casing 41, will take in temporarily in the downthehole metal needle tubing 2 of above-mentioned bar ejecting, realize the effect of auto-eject metal needle tubing 2, need not artifical manual taking out, it is convenient and safe more.

A toothed ring 428 is arranged on the outer wall of one side of the rotating ring 423, the diameter of the gear part of the gear shaft 421 is the same as that of the toothed ring 428, a first rack 433 and a second rack 434 which are different in length are respectively arranged on the outer wall of the top of the crawler 431, the second rack 434 is of a one-way convex tooth structure, as shown in fig. 11, convex teeth of the second rack are inclined towards one side, the first rack 433 and the second rack 434 are of an integral structure with the crawler 431, wherein the first rack 433 which is longer is matched with the gear part of the gear shaft 421, and the second rack 434 which is shorter is matched with the toothed ring 428;

one end of the thimble strip 424, which is far away from the rotating lantern ring 423, is connected with the upper end of a clamping piece 425 in a matching way, the lower end of the clamping piece 425 is fixedly connected with a top support seat 426, and the structure of the top support seat 426 is matched with that of the movable clamping seat 44; the first rack 433 and the second rack 434 are synchronously movable along with the rotation of the track 431, and the first rack 433 and the second rack 434 can respectively drive the gear shaft 421 and the toothed ring 428 to rotate, as shown in fig. 1 and fig. 2, when the track 431 rotates counterclockwise to drive the movable clamping seat 44 at the bottom to move to the right side of the clamping type housing 41, and the metal needle cannula 2 is pulled out, the first rack 433 at the top of the track 431 moves to the left, so that the gear shaft 421 meshed and connected with the first rack 433 rotates clockwise, pressurizes and winds the gear 422, and stores power continuously, in the process, because the second rack 434 is a convex tooth structure inclined to one side, the second rack 434 can slide away from the bottom of the toothed ring 428, and cannot drive the toothed ring 428 to rotate clockwise, when the movable clamping seat 44 moves to press against the top supporting seat 426, one end of the 2 clamping bars 441 protruding from the movable clamping seat 44 is propped away by the top supporting seat 426, the other ends of the 2 clamping bars 441 approach each other, so that the 2 clamping bars 441 are released from the tailstock 21, then the movable clamping seat 44 continues to move toward the top support seat 426, the top support seat 426 is supported by the return spring 427 and is movable, so that the top support seat 426 can continue to move rightward, the top support seat 426 drives the top clamping piece 425 to move synchronously, so that the upper end of the clamping piece 425 is pulled away from the lower part of the right end of the thimble strip 424, so that the right end of the thimble strip 424 loses the supporting and clamping effect, because the thimble strip 424 has obtained the rotational stress accumulated when the spring 422 is pressurized and wound, the thimble strip 424 can rotate rapidly and bounce downwards, and exert a downward jacking elastic force on the metal needle tube 2 which is loosely connected with the movable clamping seat 44, so that the thimble strip 424 is popped out and separated from the strip-shaped opening at the bottom of the strip-shaped round hole on the clamping shell 41, as shown in fig. 15, realize automatic pop-up metal needle tubing 2, need not manual separation, it is more convenient safety, when track 431 clockwise rotation, track 431's bottom is from the right side left side removal, drive activity joint seat 44 and remove to the left end of joint formula casing 41, make activity joint seat 44 resume to the normal position, track 431's top removes from a left side right side simultaneously, first rack 433 at track 431 top removes from a left side right side, can drive gear shaft 421 anticlockwise rotation, make clockwork spring 422 loose power, and second rack 434 can drive ring 428 anticlockwise rotation, drive rotatory lantern ring 423 anticlockwise rotation moving angle again through ring 428, let thimble strip 424 anticlockwise upwards rotate, the right-hand member of thimble strip 424 rotates to the height that exceeds the upper end of screens piece 425, screens piece 425 can carry out the screens restriction to thimble strip 424 again, resume to initial condition.

The upper end of the blocking piece 425 is of a horizontal structure, and one side, close to the thimble strips 424, of the upper end of the blocking piece 425 is of an inclined structure; horizontal structure at screens piece 425 top can be stable provide the support for thimble strip 424, lets thimble strip 424 can not screens piece 425 top slippage when being restricted, and the design of slope structure, the right-hand member that lets thimble strip 424 can slide screens piece 425 and extrude when upwards rotating, can not take place the dead condition of card.

One side of the top support seat 426 close to the movable clamping seat 44 is a conical structure, the other end of the top support seat 426 is connected with one end of a return spring 427, the elastic force of the return spring 427 is greater than that of the spring sheet 442, and the other end of the return spring 427 is connected with the inner wall of one side of the clamping type shell 41; the conical structure of the supporting seat 426 can stably support 2 clamping bars 441, so that one ends of the 2 clamping bars 441 can be separated by means of unfolding, and the return spring 427 can restore the supporting seat 426 to the original position after each moving action.

Example two:

The tail end of the transparent tee joint 3 is provided with a circular sealing cover 31, and the structure of the sealing cover 31 is in clamping fit with the tail end of the transparent tee joint 3; the sealing cover 31 can strengthen the sealing of the tail end of the transparent tee joint 3, and is safer.

A battery slot 411 is arranged at one side of the clamping type shell 41; the battery slot 411 is used for providing power energy for the driving motor 435, and the battery slot 411 is used for being additionally provided with a battery, wherein the battery can be a rechargeable battery and can have a wireless charging function.

The difference between the second embodiment and the first embodiment is that the sealing cap 31 is added at the tail end of the transparent tee 3, so that the sealing performance after the metal needle tube 2 is pulled out is improved, the second embodiment is safer, and the battery jar 411 is added for portable use.

s1, assembling the clamping shell 41 and the transparent tee joint 3 into a whole in advance, and then pricking the metal needle tube 2 into the blood vessel of the patient body by holding the whole;

s2, after the insertion is finished, the automatic needle pulling executing mechanism 43 is started to perform a section of operation, the metal needle tube 2 is automatically pulled out, and the metal needle tube 2 is temporarily reserved in the clamping type shell 41;

s3, grasping the transparent tee joint 3 to keep the transparent tee joint 3 in a positioning state, then pulling out the clamping type shell 41 temporarily clamped and combined with the transparent tee joint 3 to keep the transparent tee joint 3 and the indwelling hose 1 on the body of the patient;

s4, aligning the bottom of the clamping type shell 41 with the metal needle tube 2 to the sharps box, starting the automatic needle pulling executing mechanism 43 to operate for two sections, and enabling the needle tube popping mechanism 42 to pop and separate the metal needle tube 2 temporarily retained in the clamping type shell 41 into the sharps box;

s5, starting the automatic needle pulling executing mechanism 43 to operate in three stages to make the needle tube ejecting mechanism 42 in the clamping type shell 41 return to the initial state for recycling.

The working principle is as follows: the indwelling needle is divided into two parts, wherein one part is formed by combining an indwelling hose 1, a metal needle tube 2 and a transparent tee 3 and is disposable, the other part is a reusable safe needle pulling assembly 4 which can be reused, and the two parts are matched and combined to form the anti-needle-prick indwelling needle;

when the device is used, the left end of the clamping type shell 41 is inserted into the right end of the transparent tee joint 3 in advance, then the clamping type shell 41 and the transparent tee joint 3 are held by hands to form an integral part, the front end of the metal needle tube 2 is pricked into a blood vessel of a patient body, after the pricking is finished, an operator starts the driving motor 435, the switch of the driving motor 435 can be arranged on the shell of the clamping type shell 41, the operation of the driving motor 435 is divided into three sections by pressing operation, the operation is performed for one section by one section and is performed circularly once by pressing the switch, when the first section is operated, the driving motor 435 drives the crawler 431 to rotate anticlockwise through the support shaft 432, so that the movable clamping seat 44 at the bottom of the crawler 431 moves towards the right side of the clamping type shell 41, the metal needle tube 2 is pulled out until the movable clamping seat 44 moves to the right end of the clamping type shell 41, namely, the automatic pulling-out of the metal needle tube 2 is finished, and the operation of the driving motor 435 is completed for one section, compared with the traditional manual needle pulling mode, the automatic needle pulling mechanism has the advantages of being more stable, avoiding pain of patients caused by unstable hand shaking when a new nurse and a patient pull the needle due to human errors, and the automatic needle pulling mechanism can be operated through a button, so that an operator can pull the needle by only holding the remaining needle with one hand, and the medical care personnel can handle more accidents by freeing one hand of the medical care personnel in a complicated medical environment;

the pulled metal needle tube 2 can be temporarily accommodated in a strip-shaped round hole in the clamping type shell 41 to shield the whole length area of the metal needle tube 2, so that the metal needle tube 2 can be prevented from being exposed to accidentally injure related personnel;

in the process of counterclockwise rotation of the crawler 431, the first rack 433 on the top of the crawler 431 moves leftwards, so that the gear shaft 421 meshed and connected with the first rack 433 rotates clockwise, the clockwork 422 is pressurized and wound, and continuously stores power, and in the process, because the second rack 434 is a convex tooth structure inclined to one side, the second rack 434 can slide away from the bottom of the toothed ring 428, and cannot drive the toothed ring 428 to rotate clockwise;

when the extracted metal needle tube 2 needs to be taken down, the driving motor 435 is started to operate for two stages, the track 431 continues to rotate, the movable clamping seat 44 moves to be pressed at the position of the top support seat 426, one end of the 2 clamping strips 441, which protrudes out of the movable clamping seat 44, is spread by the top support seat 426, so that the other ends of the 2 clamping strips 441 are close to each other, the 2 clamping strips 441 and the tailstock 21 are loosened, then the movable clamping seat 44 continues to move towards the direction of the top support seat 426, the top support seat 426 is supported by the return spring 427 and is movable, so that the top support seat 426 can continue to move towards the right, the top support seat 426 drives the clamping piece 425 at the top to synchronously move, so that the upper end of the clamping piece 425 is pulled out from the lower end of the top needle strip 424, so that the right end of the top needle strip 424 loses the supporting clamping position, because the top needle strip 424 has obtained the rotational kinetic energy accumulated when the spring 422 is pressurized and rolled up, the top needle strip 424 can rapidly rotate and bounce downwards, the metal needle tube 2 which is loosely connected with the movable clamping seat 44 is applied with downward jacking elasticity, so that a jacking needle strip 424 is popped out and separated from a strip-shaped opening at the bottom of a strip-shaped round hole on the clamping type shell 41, the metal needle tube 2 is automatically popped out without manual separation, and the metal needle tube 2 is more convenient and safer;

after the metal needle tube 2 is taken out, the third section of the driving motor 435 is operated to drive the crawler 431 to rotate clockwise, the bottom of the crawler 431 moves from right to left to drive the movable clamping seat 44 to move towards the left end of the clamping type shell 41, so that the movable clamping seat 44 returns to the original position, meanwhile, the top of the crawler 431 moves from left to right, the first rack 433 at the top of the crawler 431 moves from left to right to drive the gear shaft 421 to rotate anticlockwise, so that the spring 422 is loosened, the second rack 434 can drive the toothed ring 428 to rotate anticlockwise, the toothed ring 428 drives the rotating sleeve ring 423 to rotate anticlockwise by a moving angle, so that the thimble strips 424 rotate anticlockwise and upwards, after the right end of the thimble strips 424 rotates to a height higher than the upper end of the clamping piece 425, the clamping piece 425 can clamp and limit the thimble strips 424 again to return to the initial state, and accordingly the thimble strips can be reused conveniently.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a needle-prick prevention light-resistant needle of keeping somewhere of disposable, includes transparent tee bend (3) and keeps somewhere hose (1), transparent tee bend (3) and the centre of keeping somewhere hose (1) are worn to be equipped with metal needle tubing (2), its characterized in that: the tail end of the transparent tee joint (3) is connected with a reusable safe needle pulling assembly (4), the reusable safe needle pulling assembly (4) comprises a clamping type shell (41), a needle tube ejecting mechanism (42) and an automatic needle pulling executing mechanism (43), the automatic needle pulling executing mechanism (43) is matched and connected with the needle tube ejecting mechanism (42), and the automatic needle pulling executing mechanism (43) is connected with a tail seat (21) at the tail end of the metal needle tube (2) through a movable clamping seat (44).

2. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 1, wherein: one end of the clamping type shell (41) is inserted into the tail end of the transparent tee joint (3), an arc-shaped bulge is arranged on the outer wall of one end of the clamping type shell (41) inserted into the transparent tee joint (3) in an encircling manner, an arc-shaped groove is arranged on the inner wall of the tail end of the transparent tee joint (3) in an encircling manner, and the arc-shaped groove is matched with the arc-shaped bulge in structure.

3. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 2, wherein: automatic pull out needle actuating mechanism (43) and include track (431), back shaft (432), driving motor (435) and connecting strip (436), track (431) set up in the inner chamber of joint formula casing (41), and the one end of track (431) bottom outer wall fixedly connected with connecting strip (436), and the one side outer wall of bar through-hole fixedly connected with activity joint seat (44) on joint formula casing (41) lateral wall is passed to the other end of connecting strip (436), the both ends of track (431) are connected with back shaft (432) respectively, and the outer wall that the one end of back shaft (432) of track (431) wherein one end passed joint formula casing (41) has driving motor (435).

4. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 3, wherein: a strip-shaped round hole is formed in the clamping type shell (41), a strip-shaped opening is formed in the bottom of the strip-shaped round hole, the movable clamping seat (44) is arranged in the strip-shaped round hole in a sliding mode, a through hole is formed in the middle of the movable clamping seat (44), 2 clamping strips (441) are hinged in the through hole, two ends of a spring piece (442) are connected between the 2 clamping strips (441) in a supporting mode, the spring piece (442) is V-shaped, and two ends of the 2 clamping strips (441) protrude out of the outer walls of two sides of the movable clamping seat (44) respectively;

one side of the tailstock (21) far away from the metal needle tube (2) is provided with a strip-shaped groove which is through up and down, and the structure of the strip-shaped groove is matched with the structure of the outer wall of one side of the clamping strip (441) protruding out of the movable clamping seat (44).

5. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 4, wherein: the needle tube ejecting mechanism (42) comprises a gear shaft (421), a clockwork spring (422), a rotary sleeve ring (423) and a thimble strip (424), one end of the thimble strip (424) is fixedly connected with the outer wall of one side of the rotary sleeve ring (423), a rotary shaft part which is rotatably connected with the gear shaft (421) is arranged in the middle of the rotary sleeve ring (423) in a penetrating mode, and the clockwork spring (422) is connected between the outer wall of the rotary shaft part of the gear shaft (421) and the inner wall of the rotary sleeve ring (423);

the middle part of the thimble strip (424) is provided with a bending convex structure, and the position of the bending convex structure corresponds to one end of the strip-shaped round hole on the clamping type shell (41) far away from the transparent tee joint (3).

6. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 5, wherein: a toothed ring (428) is arranged on the outer wall of one side of the rotating ring (423), the diameter of a gear part of the gear shaft (421) is the same as that of the toothed ring (428), a first rack (433) and a second rack (434) which are different in length are respectively arranged on the outer wall of the top of the crawler belt (431), wherein the first rack (433) with the longer length is matched with the gear part of the gear shaft (421), and the second rack (434) with the shorter length is matched with the gear part of the toothed ring (428);

one end, far away from the rotating lantern ring (423), of the thimble strip (424) is connected with the upper end of a clamping piece (425) in a matching mode, the lower end of the clamping piece (425) is fixedly connected with a top support seat (426), and the structure of the top support seat (426) is matched with that of the movable clamping seat (44).

7. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 6, wherein: the upper end of the blocking part (425) is of a horizontal structure, and one side, close to the thimble strips (424), of the upper end of the blocking part (425) is of an inclined structure.

8. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 6, wherein: one side of the top support seat (426) close to the movable clamping seat (44) is of a conical structure, the other end of the top support seat (426) is connected with one end of a return spring (427), and the other end of the return spring (427) is connected with the inner wall of one side of the clamping type shell (41).

9. The disposable needle-stick-resistant light-shielding indwelling needle for disposable use according to claim 1, wherein: the tail end of the transparent tee joint (3) is provided with a circular sealing cover (31), and the structure of the sealing cover (31) is in clamping fit with the tail end of the transparent tee joint (3);

and a battery groove (411) is formed in one side of the clamping type shell (41).

10. The use method of the disposable needle-stick-resistant light-proof indwelling needle according to any one of claims 1 to 9, comprising the following steps:

s1, assembling the clamping type shell (41) and the transparent tee joint (3) into a whole in advance, and then pricking the metal needle tube (2) into the blood vessel of the body of the patient by holding the whole;

s2, after the insertion is finished, the automatic needle pulling executing mechanism (43) is started to perform a section of operation, the metal needle tube (2) is automatically pulled out, and the metal needle tube (2) is temporarily retained in the clamping type shell (41);

s3, grasping the transparent tee joint (3) to keep the transparent tee joint (3) in a positioning state, then pulling out the clamping type shell (41) temporarily clamped and combined with the transparent tee joint (3) to keep the transparent tee joint (3) and the indwelling hose (1) on the body of the patient;

s4, aligning the bottom of the clamping type shell (41) which is provided with the metal needle tube (2) to the opening of the sharps box, starting the automatic needle pulling executing mechanism (43) to operate for two sections, and enabling the needle tube ejecting mechanism (42) to eject and separate the metal needle tube (2) which is temporarily arranged in the clamping type shell (41) into the sharps box;

s5, starting the automatic needle pulling executing mechanism (43) to operate in three stages to make the needle tube ejecting mechanism (42) in the clamping type shell (41) return to the initial state, which is convenient for recycling.