CN113663177B - Percutaneous anhydrous alcohol injection needle - Google Patents

Abstract

The invention belongs to the technical field of injectors, and discloses a percutaneous anhydrous alcohol injection needle which comprises a needle tube, a sleeve, a screw rod and a slide block, wherein the needle tube is provided with a through hole, the right end of the needle tube is fixedly connected with a connecting tube, the left end of the surface of the connecting tube is sleeved with a circular ring, and the left side surface of the connecting tube is fixedly and vertically provided with a shielding tube. According to the invention, the sleeve rotates by pressing the screw rod inwards, and the sleeve rotates to enable the limiting rod to stably move outwards under the action of the sliding plate, so that the limiting rod moves out of the first limiting hole; at the moment, the circular ring is pushed rightwards, the circular ring drives the shielding pipe to move rightwards synchronously under the action of the sliding block and the sliding groove, so that the needle pipe is exposed gradually, after the needle pipe is exposed completely, the screw rod is loosened, the limiting rod is enabled to move inwards in a resetting mode under the action of the tension spring, the limiting rod stretches into the second limiting hole, the circular ring and the shielding pipe are enabled to be limited and fixed, and the needle pipe can be used.

Description

Percutaneous anhydrous alcohol injection needle

Technical Field

The invention belongs to the technical field of syringes, and particularly relates to a percutaneous anhydrous alcohol injection needle.

Background

The injection needle is a medical device for injecting a medicament into a human body, is a treatment mode convenient and fast to operate, and aims to treat a patient, at present, the life risk of tumors to human beings is extremely high, percutaneous anhydrous alcohol injection treatment is a treatment method which is definite in curative effect, low in price, small in liver injury and convenient to use, high-concentration alcohol with the concentration of 99.5% or more than 95% is directly injected into the liver tumor by puncturing with a fine needle under ultrasonic guidance through a chemical method, so that cell dehydration, cell coagulative necrosis or fibrous tissue dissolution is caused, and the treatment effect is achieved.

As a common treatment mode of medical treatment, the required quantity of injection needles is very large, but the injection needles are not well protected at present, and are relatively slender, so that the injection needles are easily broken in the transportation and carrying processes, and the broken injection needles cannot be used, so that the waste of resources is caused.

Disclosure of Invention

The invention aims to solve the problems, provides a percutaneous anhydrous alcohol injection needle, and has the advantages of solving the problems that the injection needle is not well protected at present, the injection needle is easy to break off in the transportation and carrying process due to the fact that the injection needle is slender, the broken injection needle cannot be used, and resources are wasted, and meanwhile, the injection needle is installed in the injection needle and the structural integrity is guaranteed under the subsequent pressing.

In order to achieve the purpose, the invention provides the following technical scheme: percutaneous anhydrous alcohol syringe needle, including needle tubing, sleeve pipe, lead screw and slider, be provided with the through-hole on the needle tubing, the right-hand member fixedly connected with connecting pipe of needle tubing, the left end cover on connecting pipe surface is equipped with the ring, the fixed perpendicular installation of left surface of connecting pipe hides the pillar, the left side threaded connection who hides the pillar has buffer protection device, two cavitys have been seted up to the inside symmetry of ring, the inside of cavity is provided with slewing mechanism, slewing mechanism's bottom activity joint is at spacing fixed establishment's top, the top of ring is provided with slide mechanism, plays the guard action to the needle tubing through hiding the pillar this moment, avoids the needle tubing to produce the damage, when preparing to use, is connected the right-hand member and the injection syringe of connecting pipe.

As a preferable technical scheme of the invention, the through holes are uniformly arranged on the side wall of the needle tube in a radial shape at equal intervals, and the technical scheme can be adopted to facilitate easier injection of liquid medicine into a human body.

As a preferable technical scheme of the invention, the rotating mechanism comprises a cavity, a sleeve and a screw rod, the outer end of the sleeve is connected with an outer wall surface bearing of the cavity, the screw rod extends from the upper end inside the sleeve, the screw rod is in threaded connection with the sleeve, the screw rod extends out of a circular ring, and when the rotating mechanism is used, two screw rods are pressed inwards by one hand to enable the screw rods to move inwards, so that the sleeve in threaded connection with the screw rod rotates.

As a preferred technical scheme of the invention, the limiting and fixing mechanism comprises a cavity, a sliding plate, a limiting rod, a tension spring, a first limiting hole and a second limiting hole, the sliding plate is arranged in the cavity, the sliding plate is connected with the cavity in a sliding way, the limiting rod penetrates through the middle part of the sliding plate and extends into the sleeve, the limiting rod is in threaded connection with the sleeve, the tension spring is sleeved outside the limiting rod, the inner end and the outer end of the tension spring are respectively and fixedly connected with the inner wall surface of the cavity and the inner side surface of the sliding plate, the left end and the right end of the outer surface of the connecting pipe are respectively provided with two first limiting holes and two second limiting holes symmetrically, the limiting rod in threaded connection with the sleeve is enabled to move outwards stably under the action of the sliding plate, and meanwhile, the tension spring is stretched, so that the limiting rod moves out of the first limiting hole.

As a preferable technical solution of the present invention, the diameter of the stopper rod is consistent with the diameters of the first stopper hole and the second stopper hole.

As a preferred technical scheme of the present invention, the sliding mechanism includes a sliding block and a sliding groove, two sliding blocks are symmetrically disposed on an inner side surface of the circular ring, the sliding groove is disposed on an outer wall surface of the connecting pipe, the sliding block is connected to the sliding groove in a sliding manner, after the limiting rod moves out of the first limiting hole, the circular ring is pushed rightward, so that the circular ring drives the shielding pipe to move rightward synchronously under the action of the sliding block and the sliding groove, the shielding pipe moves away from the needle tube, after the needle tube is completely exposed, the limiting rod is moved inward under the action of the tension spring by loosening the screw rod, and at this time, the limiting rod extends into the second limiting hole to limit and fix the circular ring and the shielding pipe, and the needle tube can be used at this time.

As a preferred technical scheme of the invention, the buffer protection device comprises a knob head, a thread plate is fixedly arranged at the top of the knob head, a lifting plate is fixedly arranged at the top of the thread plate, a plurality of sections of telescopic cylinders are arranged in the middle of the top of the lifting plate, volute springs are arranged on the outer surfaces of the sections of telescopic cylinders, the bottoms of the volute springs are fixedly arranged on the periphery of the top of the thread plate, the thread plate is in threaded connection with the inner wall of the shielding pipe, a corresponding structure also exists in the existing protection for a needle head, but the needle head is usually protected by a sleeve directly, the protection mode is too general, the head is easy to damage when the head is influenced by external force extrusion, the needle head can be protected by buffer force in advance by setting the mode, on one hand, the clamping is easy, and simultaneously, a user can be prompted, when the part is extruded by external force, the needle head is completely hidden in the lifting plate and the multi-section telescopic cylinder, the whole body cannot be damaged, and the follow-up use can be realized by unscrewing and pushing out the simplest thread.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the sleeve rotates by pressing the screw rod inwards, and the sleeve rotates to enable the limiting rod to stably move outwards under the action of the sliding plate, so that the limiting rod moves out of the first limiting hole; at the moment, the circular ring is pushed rightwards, the circular ring drives the shielding pipe to move rightwards synchronously under the action of the sliding block and the sliding groove, so that the needle pipe is exposed gradually, after the needle pipe is exposed completely, the screw rod is loosened, the limiting rod is enabled to move inwards in a resetting mode under the action of the tension spring, the limiting rod stretches into the second limiting hole, the circular ring and the shielding pipe are enabled to be limited and fixed, and the needle pipe can be used.

2. The detachable buffering protection device structure is arranged on the head of the needle tube, so that when the whole needle tube is sheathed and protected by the shielding tube, the relative cavity of the head is not effectively protected.

Drawings

FIG. 1 is a schematic top view of the structure of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is an enlarged schematic view taken at A-A of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged view taken from B-B of FIG. 3 according to the present invention;

FIG. 5 is an enlarged view at C of FIG. 3 according to the present invention;

FIG. 6 is a schematic view of the various structural positions of the needle cannula of the present invention in use;

FIG. 7 is a cross-sectional view of the structural buffer protection device of the present invention.

In the figure: 1. a needle tube; 2. a through hole; 3. a connecting pipe; 4. a circular ring; 5. a shielding tube; 6. a cavity; 7. a slide plate; 8. a sleeve; 9. a screw rod; 10. a limiting rod; 11. a tension spring; 12. a first limit hole; 13. a second limiting hole; 14. a slider; 15. a chute; 16. a buffer protection device; 161. a knob head; 162. a thread plate; 163. a lifting plate; 164. a multi-section telescopic cylinder; 165. a volute spring.

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.

As shown in fig. 1 to 7, the invention provides a percutaneous anhydrous alcohol injection needle, which comprises a needle tube 1, a sleeve 8, a screw rod 9 and a slide block 14, wherein a through hole 2 is formed in the needle tube 1, a connecting tube 3 is fixedly connected to the right end of the needle tube 1, a ring 4 is sleeved at the left end of the surface of the connecting tube 3, a shielding tube 5 is fixedly and vertically installed on the left side surface of the connecting tube 3, a buffer protection device 16 is connected to the left side of the shielding tube 5 in a threaded manner, two cavities 6 are symmetrically formed in the ring 4, a rotating mechanism is arranged in each cavity 6, the bottom of each rotating mechanism is movably clamped at the top of a limiting and fixing mechanism, a sliding mechanism is arranged above the ring 4, the shielding tube 5 plays a role in protecting the needle tube 1 to prevent the needle tube 1 from being damaged, and the right end of the connecting tube 3 is connected with the injection tube when the needle is ready to be used.

Wherein, through-hole 2 is evenly opened on the lateral wall of needle tubing 1 radially equidistance, adopts above-mentioned technical scheme, can be convenient for easier injection liquid medicine in to the human body.

Wherein, slewing mechanism is including cavity 6, sleeve pipe 8 and lead screw 9, and the outer end of sleeve pipe 8 is connected with the outer wall bearing of cavity 6, and the upper end extension of the inside of sleeve pipe 8 is provided with lead screw 9, and lead screw 9 and 8 threaded connection of sleeve pipe, and lead screw 9 extends the setting of ring 4, when using, inwards presses two lead screws 9 through one hand, makes lead screw 9 inwards produce and remove for 8 of sleeve pipe with 9 threaded connection of lead screw take place to rotate.

Wherein the limiting and fixing mechanism comprises a cavity 6, a sliding plate 7, a limiting rod 10, a tension spring 11, a first limiting hole 12 and a second limiting hole 13, the sliding plate 7 is arranged in the cavity 6, the sliding plate 7 is connected with the cavity 6 in a sliding way, the limiting rod 10 penetrates through the middle part of the sliding plate 7, the limiting rod 10 extends into the sleeve 8, the limiting rod 10 is connected with the sleeve 8 by screw thread, the tension spring 11 is sleeved outside the limiting rod 10, and the inner and outer ends of the tension spring 11 are respectively and fixedly connected with the inner wall surface of the cavity 6 and the inner side surface of the sliding plate 7, the left and right ends of the outer surface of the connecting pipe 3 are respectively and symmetrically provided with two first limiting holes 12 and two second limiting holes 13, when the sleeve 8 rotates, the limiting rod 10 in threaded connection with the sleeve 8 is stretched by the tension spring 11 while being stably moved outwards under the action of the sliding plate 7, so that the limiting rod 10 moves out of the first limiting hole 12.

The diameter of the limiting rod 10 is consistent with the diameter of the first limiting hole 12 and the diameter of the second limiting hole 13.

Wherein, slide mechanism is including slider 14 and spout 15, the medial surface symmetry of ring 4 is provided with two sliders, spout 15 has been seted up to the outer wall of connecting pipe 3, slider 14 slides with spout 15 and is connected, treat that gag lever post 10 removes the back from first spacing hole 12, promote ring 4 right, make under the effect of slider 14 and spout 15 ring 4 drive to shield pipe 5 and move right in step, make to shield pipe 5 remove from needle tubing 1, treat to expose needle tubing 1 completely the back, through loosening lead screw 9, make gag lever post 10 inwards produce the removal that resets under the effect of extension spring 11, gag lever post 10 stretches into in the spacing hole 13 of second this moment, carry out spacing fixed to ring 4 and shield pipe 5, can use needle tubing 1 this moment.

Wherein, the buffering protector 16 includes a knob head 161, a screw plate 162 is fixedly installed on the top of the knob head 161, a lifting plate 163 is fixedly installed on the top of the screw plate 162, a plurality of sections of telescopic barrels 164 are installed in the middle of the top of the lifting plate 163, a volute spring 165 is installed on the outer surface of the plurality of sections of telescopic barrels 164, the bottom of the volute spring 165 is fixedly installed on the periphery of the top of the screw plate 162, the screw plate 162 is in threaded connection with the inner wall of the shielding tube 5, there is a corresponding structure for protecting the needle head in the prior art, but the needle head is often protected by a sleeve directly, the protection mode is too general, when the head is affected by external force extrusion, the head is easily damaged, the needle head can be protected by buffering force in advance by setting the mode when entering the shielding tube 5, on one hand, the clamping is easy, and simultaneously can give a prompt to a user, when the part is extruded by external force, because the needle is completely hidden in the lifting plate 163 and the multi-section telescopic cylinder 164, the whole body can not be damaged, and the needle can be unscrewed and pushed out for subsequent use by adopting the simplest screw.

The working principle and the using process of the invention are as follows:

when in specific sleeving protection, the shielding tube 5 is movably sleeved on the surface of the needle tube 1 manually in advance, then the screw rods 9 are lightly pressed at two ends of the circular ring 4 to enable the circular ring to continuously penetrate into the sleeve 8, pressure is applied to the structure of the limiting rod 10 along with the continuous penetration of the two screw rods 9, the limiting rod 10 which is not clamped with the first limiting hole 12 under the influence of the elasticity of the tension spring 11 begins to slowly move downwards to extrude, the whole sliding plate 7 and the limiting rod 10 descend under the action of force, the tension spring 11 is compressed, the limiting rod 10 is finally clamped in the first limiting hole 12, and the whole circular ring 4 controls the shielding tube 5 to be limited and fixed together;

when the needle tube 1 needs to be normally used, the lead screw 9 is not pressed manually, so that the limiting rod 10 is not movably clamped with the first limiting hole 12, then the whole circular ring 4 is moved to the right side, the circular ring 4 losing limiting clamping drives the shielding tube 5 to synchronously move, at the moment, the sliding block 14 and the sliding groove 15 are matched with each other to slide until the whole needle tube moves to the area of the second limiting hole 13, and the limiting fixation with the second limiting hole 13 is completed by the lead screw 9 for two times;

when the head of the needle tube 1 needs to be protected, the buffering protection device 16 is manually screwed at the end part of the shielding tube 5, at this time, the needle head end of the needle tube 1 is effectively clamped and protected inside the multi-section telescopic cylinder 164 and is buffered and protected by the volute spring 165, and the buffering protection device 16 is structurally taken down if needle head operation is needed subsequently.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. Percutaneous anhydrous alcohol syringe needle, including needle tubing (1), sleeve pipe (8), lead screw (9) and slider (14), be provided with through-hole (2), its characterized in that on needle tubing (1): the needle tube is characterized in that a connecting tube (3) is fixedly connected to the right end of the needle tube (1), a ring (4) is sleeved at the left end of the surface of the connecting tube (3), a shielding tube (5) is fixedly and vertically installed on the left side surface of the connecting tube (3), a buffering protection device (16) is in threaded connection with the left side of the shielding tube (5), two cavities (6) are symmetrically formed in the ring (4), a rotating mechanism is arranged in each cavity (6), the bottom of each rotating mechanism is movably clamped at the top of each limiting fixing mechanism, a sliding mechanism is arranged above each ring (4), each limiting fixing mechanism comprises a cavity (6), a sliding plate (7), a limiting rod (10), a tension spring (11), a first limiting hole (12) and a second limiting hole (13), each sliding plate (7) is arranged in each cavity (6), and each sliding plate (7) is in sliding connection with the corresponding cavity (6), the limiting rod (10) penetrates through the middle of the sliding plate (7), the limiting rod (10) extends into the sleeve (8) and is arranged in the sleeve, the limiting rod (10) is in threaded connection with the sleeve (8), the tension spring (11) is sleeved on the outer side of the limiting rod (10), the inner end and the outer end of the tension spring (11) are fixedly connected to the inner wall surface of the cavity (6) and the inner side surface of the sliding plate (7) respectively, and the left end and the right end of the outer surface of the connecting pipe (3) are symmetrically provided with two first limiting holes (12) and two second limiting holes (13) respectively;

buffer protection device (16) is including knob head (161), the top fixed mounting of knob head (161) has screw plate (162), the top fixed mounting of screw plate (162) has lifter plate (163), the middle part at lifter plate (163) top is provided with multisection telescopic tube (164), this the surface of multisection telescopic tube (164) is provided with the bottom fixed mounting at screw plate (162) top of volute spring (165) and is peripheral, screw plate (162) and the inner wall threaded connection who shields pipe (5).

2. The percutaneous anhydrous alcohol injection needle according to claim 1, wherein: the through holes (2) are uniformly arranged on the side wall of the needle tube (1) in a radial equidistant mode.

3. The percutaneous anhydrous alcohol injection needle according to claim 1, wherein: the rotating mechanism comprises a cavity (6), a sleeve (8) and a screw rod (9), the outer end of the sleeve (8) is connected with an outer wall surface bearing of the cavity (6), the screw rod (9) is arranged at the upper end inside the sleeve (8) in an extending mode, the screw rod (9) is in threaded connection with the sleeve (8), and the screw rod (9) extends out of a circular ring (4) in a setting mode.

4. The percutaneous anhydrous alcohol injection needle according to claim 1, wherein: the diameter of the limiting rod (10) is consistent with the diameter of the first limiting hole (12) and the diameter of the second limiting hole (13).

5. The percutaneous anhydrous alcohol injection needle according to claim 1, wherein: the sliding mechanism comprises a sliding block (14) and a sliding groove (15), two sliding blocks are symmetrically arranged on the inner side surface of the circular ring (4), the sliding groove (15) is formed in the outer wall surface of the connecting pipe (3), and the sliding block (14) is connected with the sliding groove (15) in a sliding mode.

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