CN219022725U - Needle-punching-prevention pen cap for injection - Google Patents

Abstract

The utility model discloses a needle penetration prevention pen cap for injection, which belongs to the technical field of medical appliances and comprises a pen cap body which is of a cylindrical hollow structure, wherein a rectangular through groove is formed in the upper section of the pen cap body, a locking groove for limiting an injector to be injected is formed in the position, perpendicular to the rectangular through groove, of the upper section of the pen cap body, a rectangular through hole I is formed in the middle lower part of the pen cap body, a rectangular through hole II is symmetrically formed in the two sides of the middle lower part of the pen cap body, perpendicular to a handle of an injection cylinder, a bottom hole is formed in the bottom of the pen cap body, a first spring fixing ring is arranged on the inner wall of the bottom of the pen cap body and corresponds to the bottom hole, a spring I is arranged in the spring fixing ring, the inside of the pen cap body is positioned above the spring I, and an annular self-locking piece is arranged at the position corresponding to the butt joint installation position of the injector and a needle. The utility model is convenient for placing the injector, prevents the needle tip from being exposed to the external stabbing injury of medical staff, can finish the separation of needle head and needle bolt, and then the medical staff pours the needle head into the sharp instrument barrel.

Description

Needle-punching-prevention pen cap for injection

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an injection pen cap capable of preventing needle puncture.

Background

The syringe is a common medical appliance, the syringe cylinder is generally made of glass or plastic, the glass syringe has good transparency, the condition of injecting medicine can be seen, the syringe can be sterilized by a boiling method, but the plastic syringe has low processing cost. At present, in medical institutions, the disposable plastic injector replaces the prior glass injector, so that the occurrence of hospital iatrogenic cross infection is effectively avoided, and the disposable plastic injector is welcomed by patients and medical workers. The existing injector is generally provided with a needle sleeve outside the needle head of the injector, when the injector is used, the needle sleeve is taken down, and after the injection is finished, the needle cylinder and the needle head are required to be separated and stored due to different treatment modes of the needle cylinder and the needle head; medical staff usually directly uses both hands to sleeve the needle cover back to the needle again or uses both hands to separate the needle of the syringe from the needle cylinder and store respectively, so as to prevent infection caused by puncture of the used needle by other people, and then the used syringe is destroyed in a concentrated way, so that cross infection caused by repeated use of the used disposable syringe is prevented.

However, when the medical staff separates the syringe and the needle, the operation is performed by two hands, so that the operation is inconvenient, and accidental stabbing is easy to occur. This need for improvement has created a need for a kit that automatically separates the needle from the pintle for use with a syringe.

Disclosure of Invention

The embodiment of the utility model provides an injection pen cap capable of preventing needle puncture so as to solve the technical problems.

The embodiment of the utility model adopts the following technical scheme: the utility model provides an injection is with preventing needle puncture pen cap, including the pen cap body be cylindrical hollow structure, rectangular logical groove has been seted up to the upper segment position of the pen cap body, and still set up the spacing locking groove of syringe that is used for treating the injection in the position of upper segment perpendicular to rectangular logical groove of the pen cap body, the lower part has rectangular through-hole first in the pen cap body, and perpendicular to injection tube handle is equipped with rectangular through-hole second in the same bilateral symmetry of lower part in the pen cap body, there is a bottom opening in pen cap body bottom, be equipped with first spring retainer ring on the pen cap body bottom inner wall and correspond the bottom opening position, be equipped with spring first in first spring retainer ring, spring first length and syringe needle length are approximately the same, the inside of the pen cap body and be located the top of spring first, the position of corresponding syringe and syringe needle butt joint installation is equipped with annular auto-lock.

Further, the annular self-locking piece comprises chassis, ring piece, spring wire, three knob, traction lever and button, the chassis bottom is equipped with second spring fixed ring and spring two, the ring piece sets up on the chassis, the spring wire both ends are connected respectively on ring piece and chassis, and three the knob is established in ring piece top, the traction lever upper end links to each other with the button, and the ring piece is connected to the lower extreme.

Further, be equipped with two horizontal poles that symmetry set up on the outer circumference wall of chassis, the both sides horizontal pole of chassis just in time blocks in the rectangle through-hole second of pen cap body both sides, and chassis central point puts and is equipped with circular through-hole, has three thin poles around through-hole axis evenly distributed around circular through-hole, and the chassis is located one side of ring piece and is equipped with first dead lever.

Further, a circular through hole is also formed in the middle of the ring sheet, three semicircular holes evenly distributed around the axis of the through hole are formed in the ring sheet and correspond to the three thin rods of the chassis, grooves evenly distributed around the axis of the through hole are formed in the outer side of the ring sheet, a guide rod hole is formed in the right upper corner of the ring sheet and connected with the traction rod, a second fixing rod is arranged at the bottom of the ring sheet and far away from the first fixing rod, and the spring wire is fixed on the first fixing rod and the second fixing rod.

Further, the middle and rear part of each knob is provided with a small hole corresponding to the thin rod of the chassis, and the tail end of the knob is provided with a vertical piece perpendicular to the knob, which is just clamped at a groove uniformly distributed at the outer side of the ring piece.

Further, the lower end of the traction rod is connected to a right upper corner guide rod hole of the ring piece and is positioned in the pen cap body, and the upper end of the traction rod is connected with the button outside the pen cap body through a rectangular through hole.

The above at least one technical scheme adopted by the embodiment of the utility model can achieve the following beneficial effects:

firstly, the pen cap body is cylindrical hollow structure, conveniently is the syringe and puts, prevents that the needle point from exposing at outside stabbing medical personnel, presses the button and opens the auto-lock back during the use, inserts the syringe and inserts the pen cap until the syringe front end reaches the rectangular syringe of pen cap body upper end and stop the groove department after again, and clockwise rotation lets syringe both sides handle rotate to the pen cap body upper segment and stop the inslot, and the syringe needle is arranged in annular auto-lock this moment. Then the button is released to lock the needle, the needle is installed, the injection can be operated, after the injection of the liquid medicine of the injector is completed, the handles at two sides of the injection cylinder are separated from the stopping groove by rotating the injector anticlockwise, and then the injection cylinder is ejected out of the spring II above the chassis.

And secondly, a rectangular through groove is formed in the upper section of the pen cap body, and a stopping groove for forming an injector for injection is further formed in the position, perpendicular to the rectangular through groove, of the upper section of the pen cap body, and is used for fixing handles on two sides of the injector.

And the middle lower part of the pen cap body is provided with a first rectangular through hole, and rectangular second through holes are symmetrically arranged on two sides of the middle lower part of the pen cap body perpendicular to the handle of the injection cylinder, so that the self-locking piece can move up and down.

Fourthly, the bottom of the pen cap body is provided with a bottom hole, so that the syringe needle is conveniently exposed to complete injection operation.

Fifthly, a first spring fixing ring is arranged on the inner wall of the bottom of the pen cap body and corresponds to the bottom hole, a first spring is arranged in the spring fixing ring, the length of the first spring is approximately the same as that of the needle, the needle can be conveniently ejected after injection is completed, and needle puncture is prevented.

And sixthly, the pen cap body is arranged inside and above the first spring, and an annular self-locking piece is arranged at a position corresponding to the butt joint installation of the syringe and the needle head, so that the syringe needle head is locked after the syringe is installed, and the needle head is convenient to separate from the needle plug after the injection is completed.

And seventhly, a second spring fixing ring and a second spring are arranged above the chassis, so that the self-locking piece and the injection tube can be kept at a certain distance, and the needle head part can be conveniently locked.

And eight, a circular through hole is formed in the center of the chassis, three thin rods uniformly distributed around the axis of the through hole are arranged around the circular through hole, so that the ring piece is convenient to install, and the needle head is convenient to insert.

And a circular through hole is also formed in the middle of the ring sheet, so that a needle head can be inserted, three semicircular holes uniformly distributed around the axis of the through hole are arranged on the ring sheet and correspond to three thin rods of the chassis, the ring sheet can be enabled to rotate in a range, and in addition, grooves uniformly distributed around the axis of the through hole are formed in the outer side of the ring sheet, so that the tail end of a knob can be conveniently clamped, and a drag effect is realized.

And ten, three knobs are arranged on the three thin rods of the chassis and positioned at the upper end parts of the ring pieces, and the middle and rear parts of the knobs are provided with small holes, so that the knobs are convenient to install on the thin rods. The end of the knob is provided with a vertical piece which is perpendicular to the knob and is just clamped at the groove which is evenly distributed on the outer side of the ring piece, so that the knob rotates around the thin rod, and the locking and releasing effects are achieved.

Eleven, the chassis is located one side of ring piece and is equipped with first dead lever, is equipped with the second dead lever in ring piece bottom and the position of keeping away from first dead lever on, and the both ends of spring wire are fixed respectively on first dead lever and second dead lever, and after the button was held, drive the traction lever motion and make ring piece clockwise rotation, and the ring piece is last three knob ends and is held down by ring piece outside recess and rotate clockwise around the thin pole simultaneously, can reach the effect of relaxing like this. After the button is released, the ring piece rotates anticlockwise due to the rebound influence of the spring wire, and the three knobs on the ring piece simultaneously rotate anticlockwise, so that the original locking state can be maintained.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a partial perspective structure of the present utility model;

FIG. 4 is a schematic perspective view of an annular self-locking member according to the present utility model;

FIG. 5 is a schematic view of a partial perspective view of an annular self-locking member according to the present utility model;

FIG. 6 is a schematic diagram showing a partial perspective view of an annular self-locking member according to the present utility model;

FIG. 7 is a schematic perspective view of a ring and a second fixing rod according to the present utility model;

fig. 8 is a schematic perspective view of the knob and riser of the present utility model.

Reference numerals

The pen cap body 1, the stopping groove 11, the first rectangular through hole 12, the second rectangular through hole 13, the bottom hole 14, the first spring fixing ring 15, the first spring 16, the annular self-locking piece 2, the chassis 21, the ring piece 22, the spring wire 23, the knob 24, the traction rod 25, the button 26, the second spring fixing ring 27, the second spring 28, the cross rod 211, the circular through hole 212, the thin rod 213, the first fixing rod 214, the semicircular hole 221, the groove 222, the guide rod hole 223, the second fixing rod 224, the knob middle hole 241 and the vertical piece 242.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The following describes in detail the technical solutions provided by the embodiments of the present utility model with reference to the accompanying drawings.

Referring to fig. 1-8, an embodiment of the utility model provides an injection needle-stick injury prevention pen cap, wherein a pen cap body 1 is of a cylindrical hollow structure, so that a syringe is conveniently placed, and the needle point of the syringe is prevented from being exposed;

the upper section of the pen cap body 1 is provided with a rectangular through groove, and a stopping groove 11 for arranging an injector for injection is also arranged at the position of the upper section of the pen cap body 1 perpendicular to the rectangular through groove and is used for fixing handles at two sides of the injector;

the middle lower part of the pen cap body 1 is provided with a first rectangular through hole 12, and rectangular through holes 13 are symmetrically arranged on two sides of the middle lower part of the pen cap body 1 perpendicular to the handle of the injection cylinder;

the bottom of the pen cap body 1 is provided with a bottom hole 14, which is convenient for exposing the needle of the injector to complete the injection operation.

The pen cap body 1 is provided with a first spring fixing ring 15 on the inner wall of the bottom and corresponding to the bottom hole 14, a first spring 16 is arranged in the first spring fixing ring 15, and the length of the first spring is approximately the same as that of the needle, so that the needle can be conveniently ejected after injection is finished, and needle puncture is prevented.

The pen cap body 1 is arranged inside and above the first spring 16, and an annular self-locking piece 2 is arranged at a position corresponding to the butt joint installation of the syringe and the needle, so that the syringe needle is locked after the syringe is installed, and the needle is convenient to separate from the pintle after the injection is completed;

the annular self-locking part 2 consists of a chassis 21, a ring piece 22, a spring wire 23, three knobs 24, a traction rod 25 and a button 26, wherein the chassis 21 is arranged in the pen cap body 1 and can fix the positions of other parts except the chassis 21 in the annular self-locking part 2, a second spring fixing ring 27 and a second spring 28 are arranged at the bottom of the chassis 21 and are convenient for the self-locking part and the injection cylinder to keep a certain distance to conveniently lock the needle head part, two symmetrically arranged cross rods 211 are arranged on the outer circumferential wall of the chassis 21, the two symmetrically arranged cross rods 211 of the chassis 21 are just clamped in the two symmetrically arranged rectangular through holes 13 on the two sides of the pen cap body 1, the self-locking part can move up and down, the center position of the chassis 21 is provided with a circular through hole 212, and three thin rods 213 uniformly distributed around the axis of the through hole are arranged around the circular through hole 212 and are convenient for the installation of the ring piece 22 and the insertion of the needle head part. The middle of the ring piece 22 is also provided with a circular through hole 212 for inserting a needle, the ring piece 22 is provided with three semicircular holes 221 which are uniformly distributed around the axis of the through hole and correspond to three thin rods 213 of the chassis 21, so that the ring piece 22 can rotate in a range, and the outer side of the ring piece 22 is also provided with grooves 222 which are uniformly distributed around the axis of the through hole, so that the tail end of the knob 24 is conveniently clamped, and the locking device has a locking function;

three knobs 24 are provided on the three thin rods 213 of the chassis 21 at the upper end portions of the ring plates 22, and a small hole 241 is provided in the rear portion of the knob 24 to facilitate the installation on the thin rods 213. The end of the knob is provided with a vertical piece 242 which is perpendicular to the knob and is just clamped at the groove 222 which is uniformly distributed on the outer side of the ring piece 22, so that the knob 24 rotates around the thin rod 213, thereby achieving the locking and releasing effects;

the right upper corner of the ring piece 22 is provided with a guide rod hole 223 which is connected with a traction rod 25, the lower end of the traction rod 25 is connected with the guide rod hole 223 at the right upper corner of the ring piece 22 and is positioned in the pen cap body 1, and the upper end of the traction rod is connected with a button 26 outside the pen cap body 1 through a rectangular through hole I12;

a first fixing rod 214 is arranged on one side of the chassis 21, which is positioned on the ring piece 22, a second fixing rod 224 is arranged at the bottom of the ring piece 22 and far away from the first fixing rod 214, and two ends of the spring wire 23 are respectively fixed on the first fixing rod 214 and the second fixing rod 224 and are matched with each other for use;

when the button 26 is pressed, the traction rod 25 is driven to move so as to enable the ring piece 22 to rotate clockwise, the tail ends of the three knobs 24 on the ring piece 22 are limited by the grooves 222 on the outer side of the ring piece 22, and meanwhile, the tension rod rotates clockwise around the thin rod 213, so that a loosening effect can be achieved. After the button 26 is released, the ring piece 22 rotates anticlockwise due to the rebound of the spring wire 23, and the three knobs 24 on the ring piece 22 simultaneously rotate anticlockwise, so that the original locking state can be maintained.

When the self-locking pen is used, after the button 26 is pressed to open the self-locking pen, the syringe is inserted into the pen cap until the front end of the syringe reaches the position of the groove 11 where the rectangular syringe at the upper end of the pen cap body 1 stops, and then the syringe rotates clockwise, so that the handles at two sides of the syringe rotate into the groove 11 where the upper section of the pen cap body 1 stops, and at the moment, the needle head is positioned in the annular self-locking pen. Then the button 26 is released to lock the needle, the needle is installed, the injection can be operated, after the injection of the liquid medicine of the injector is completed, the handles at two sides of the injection cylinder are separated from the stop groove 11 by rotating the injector anticlockwise, then the injection cylinder is ejected by the spring II 28 above the chassis 21, as the needle is locked by the self-locking device and can not be pulled out together, the needle plug separation of the needle can be completed, if the needle is to be moved out, the button 26 needs to be pressed to enable the ring piece 22 to rotate clockwise, the three knobs 24 at the upper end of the ring piece 22 rotate clockwise simultaneously, the needle can be released, the needle can be ejected into the pen cap by matching with the action of the spring I16 at the bottom end of the pen cap body 1, and then the needle is poured into the sharp barrel by medical staff.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (6)

1. The utility model provides an injection is with preventing needle puncture pen cap, a serial communication port, including the pen cap body (1) be cylindrical hollow structure, rectangular through groove has been seted up at the upper segment position of pen cap body (1), and still set up on the position of upper segment perpendicular to rectangular through groove of pen cap body (1) be used for treating the spacing locking groove (11) of syringe of injection, the lower part has rectangle through-hole one (12) in pen cap body (1), and perpendicular to injection cylinder handle is equipped with rectangle through-hole two (13) in pen cap body (1) middle lower part bilateral symmetry equally, pen cap body (1) bottom has a bottom hole (14), be equipped with first spring retainer ring (15) on pen cap body (1) bottom inner wall and correspond on bottom hole (14) position, spring one (16) are equipped with in first spring retainer ring (15), spring one (16) length and syringe needle length are approximately the same, the inside of pen cap body (1) and lie in spring one (16), and the position of corresponding syringe and butt joint installation is equipped with auto-lock ring (2).

2. The needle penetration prevention pen cap for injection according to claim 1, wherein the annular self-locking piece (2) consists of a chassis (21), a ring piece (22), a spring wire (23), three knobs (24), a traction rod (25) and a button (26), a second spring fixing ring (27) and a second spring (28) are arranged at the bottom of the chassis (21), the ring piece (22) is arranged on the chassis (21), two ends of the spring wire (23) are respectively connected to the ring piece (22) and the chassis (21), three knobs (24) are arranged above the ring piece (22), the upper end of the traction rod (25) is connected with the button (26), and the lower end of the traction rod is connected with the ring piece (22).

3. The needle-stick injury prevention pen cap for injection according to claim 2, wherein two symmetrically arranged cross bars (211) are arranged on the outer circumferential wall of the chassis (21), the cross bars (211) on two sides of the chassis (21) are just clamped in rectangular through holes (13) on two sides of the pen cap body (1), round through holes (212) are formed in the center of the chassis (21), three thin rods (213) evenly distributed around the axis of the through holes are arranged around the round through holes (212), and a first fixing rod (214) is arranged on one side of the chassis (21) located on the annular sheet (22).

4. A needle-stick injury prevention pen cap for injection according to claim 3, characterized in that a circular through hole (212) is also arranged in the middle of the ring piece (22), three semicircular holes (221) uniformly distributed around the axis of the through hole are formed in the ring piece (22), and corresponding to the three thin rods (213) on the chassis (21), grooves (222) uniformly distributed around the axis of the through hole are also formed in the outer side of the ring piece (22), a guide rod hole (223) is formed in the right upper corner of the ring piece (22) and is connected with a traction rod (25), a second fixing rod (224) is arranged at the bottom of the ring piece (22) and far from the first fixing rod (214), and the spring wire (23) is fixed on the first fixing rod (214) and the second fixing rod (224).

5. An injection needle-stick protection pen cap according to claim 4, wherein the middle and rear parts of each knob (24) are provided with a small hole (241), and the tail end of each knob (24) is provided with a vertical piece (242) perpendicular to the knob (24) and is exactly clamped at the uniformly distributed grooves (222) on the outer side of the ring piece (22) corresponding to the thin rod (213) on the chassis (21).

6. The needle-stick injury prevention pen cap for injection according to claim 4, wherein the lower end of the traction rod (25) is connected to a right upper corner guide rod hole (223) of the ring piece (22), the traction rod is positioned inside the pen cap body (1), and the upper end of the traction rod is connected with the button (26) by leaking out of the pen cap body (1) through the rectangular through hole I (12).

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