CN116870299A - A safe and convenient insulin injection pen - Google Patents
A safe and convenient insulin injection pen Download PDFInfo
- Publication number
- CN116870299A CN116870299A CN202310650893.3A CN202310650893A CN116870299A CN 116870299 A CN116870299 A CN 116870299A CN 202310650893 A CN202310650893 A CN 202310650893A CN 116870299 A CN116870299 A CN 116870299A
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- Prior art keywords
- connecting piece
- top end
- needle
- telescopic sleeve
- elastic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/3278—Apparatus for destroying used needles or syringes
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
本发明提供了一种安全便捷式胰岛素注射笔，涉及医疗器材技术领域，以解决现有技术中胰岛素注射笔针头容易导致刺伤的风险的问题，该安全便捷式胰岛素注射笔包括针头组件，针头组件包括伸缩套筒、第一弹性件、限位机构和针管，第一弹性件设置于伸缩套筒内，第一弹性件的顶端与伸缩套筒的上端连接且第一弹性件的底端与伸缩套筒的底端连接，在伸缩套筒的顶端设置有穿孔，限位机构连接于伸缩套筒中且当向下按压伸缩套筒的顶端时限位机构解锁，当限位机构锁定时，第一弹性件和伸缩套筒均处于缩短状态且针管的顶端穿过穿孔延伸至伸缩套筒的外侧，当限位机构解锁时，第一弹性件和伸缩套筒均处于伸长状态且针管的顶端位于伸缩套筒内。降低了刺伤风险。
The invention provides a safe and convenient insulin injection pen, which relates to the technical field of medical equipment and is used to solve the problem in the prior art that insulin injection pen needles easily cause puncture risks. The safe and convenient insulin injection pen includes a needle assembly. The assembly includes a telescopic sleeve, a first elastic piece, a limiting mechanism and a needle tube. The first elastic piece is arranged in the telescopic sleeve. The top end of the first elastic piece is connected to the upper end of the telescopic sleeve and the bottom end of the first elastic piece is connected to the upper end of the telescopic sleeve. The bottom end of the telescopic sleeve is connected, and a perforation is provided at the top of the telescopic sleeve. The limiting mechanism is connected to the telescopic sleeve and when the top of the telescopic sleeve is pressed downward, the limiting mechanism unlocks. When the limiting mechanism is locked, the first An elastic member and the telescopic sleeve are both in a shortened state, and the top end of the needle tube extends through the perforation to the outside of the telescopic sleeve. When the limiting mechanism is unlocked, the first elastic member and the telescopic sleeve are both in an extended state, and the top end of the needle tube extends Located inside the telescopic sleeve. Reduced risk of stab wounds.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a safe and portable insulin injection pen.
Background
The pen type injector/injection pen is a product which combines the injection preparation and the injector, is widely applied to the fields of insulin treatment of diabetics, growth hormone treatment of dwarf patients and the like because of the characteristics of accurate dose setting, simple operation, convenient carrying, suitability for household use, avoidance of the risk of carelessly breaking a syringe when using a glass injector for injection and the like.
Pen injectors are mainly used for insulin injections, also called insulin pens or injection pens. Injection pens usually comprise a cap, a pen core, a body (with graduations, a display window, a dose selection knob, a dose indication, an injection push button), a needle (including an outer needle cap, an inner needle cap, a needle, a protective sheet), a pen core.
After the existing insulin injection pen finishes injection, an outer needle cap is required to be covered on a needle head, and then the needle head is unscrewed and properly discarded. When the outer needle cap is sleeved back, the hand is easy to be pricked by the needle head, and the infection of blood related diseases is caused. Because the department ward personnel of the hospital are noisy, and insulin is generally injected before meal or sleep, nursing staff is promoted continuously by hunger and sleepiness of certain patients, and the danger of needle puncture injury of an insulin injection pen is further improved.
The patent with the publication number of CN212214322U discloses a safe and adjustable insulin injection needle, which comprises an inner shell, a protective sleeve, a lock ring, a spring, a needle body, a needle seat and a depth adjusting sleeve. The insulin injection needle has the advantages that the operation steps are added when the insulin injection needle is used, the injection method needs to be continuously kept for a certain period of time after the insulin injection is finished, so that the effective absorption of insulin is ensured, and particularly for the injection of more than ten dosage units, the duration is at least about 10 seconds and is properly increased along with the increase of the dosage, if the injection is finished for a patient with larger injection dosage, the needle is hidden, and the condition of the overflow of the injected subcutaneous insulin exists, so that the blood sugar control is not ideal.
Disclosure of Invention
The invention aims to provide a safe and portable insulin injection pen, which solves the problem that the needle of the insulin injection pen is easy to cause the risk of stabbing in the prior art.
The invention provides a safe portable insulin injection pen, which comprises a needle head assembly, wherein the needle head assembly comprises a telescopic sleeve, a first elastic piece, a limiting mechanism and a needle tube, the first elastic piece is arranged in the telescopic sleeve, the top end of the first elastic piece is connected with the upper end of the telescopic sleeve, the bottom end of the first elastic piece is connected with the bottom end of the telescopic sleeve, a through hole is formed in the top end of the telescopic sleeve, the limiting mechanism is connected in the telescopic sleeve, when the top end of the telescopic sleeve is pressed downwards, the limiting mechanism is unlocked, when the limiting mechanism is locked, the first elastic piece and the telescopic sleeve are in a shortened state, the top end of the needle tube penetrates through the through hole and extends to the outer side of the telescopic sleeve, and when the limiting mechanism is unlocked, the first elastic piece and the telescopic sleeve are in an elongated state, and the top end of the needle tube is positioned in the telescopic sleeve.
As a preferable mode of the invention, the limit mechanism comprises a first connecting piece and a second connecting piece, wherein the top end of the first connecting piece is connected with the top end of the telescopic sleeve, the lower end of the first connecting piece extends downwards, the bottom end of the second connecting piece is connected with the bottom end of the telescopic sleeve, the top end of the second connecting piece extends upwards to the lower side of the first connecting piece, the bottom end of the first connecting piece is connected with the top end of the second connecting piece through a connecting belt, and when the top end of the telescopic sleeve is pressed downwards, the first connecting piece moves downwards and breaks the connecting belt.
As a preferable scheme of the invention, the first connecting piece and the second connecting piece are arranged in a vertically staggered mode, the connecting belt is connected to one adjacent side of the first connecting piece and the second connecting piece, inclined planes are arranged at opposite ends of the first connecting piece and the second connecting piece, and the inclined planes on the first connecting piece and the inclined planes on the second connecting piece are arranged in parallel.
As a preferable mode of the invention, the first connecting piece is in a rod shape, the top end of the first connecting piece extends to the upper side of the telescopic sleeve and is connected with a trigger button at the top end of the first connecting piece, and a third elastic piece is arranged between the trigger button and the telescopic sleeve.
As a preferred aspect of the present invention, the telescopic sleeve includes an outer sleeve and at least one inner cone, the inner cone is disposed inside the outer sleeve and is capable of moving up and down with respect to the outer sleeve, the through hole is disposed at a top end of the inner cone, the first elastic member is disposed inside the inner cone and is connected to an upper end of the inner cone, when the first elastic member is in a compressed state, the inner cone is contracted inside the outer sleeve, and when the first elastic member is in an extended state, the inner cone extends upward out of the outer sleeve and has a top end higher than the needle tube.
As a preferable mode of the invention, a first clamping edge extending towards the inner side of the outer sleeve is arranged around the top end of the outer sleeve, the outer sleeve is cylindrical, a second clamping edge extending towards the outer side of the inner cone is arranged around the bottom end of the inner cone, and when the inner cone moves to the upper side of the outer sleeve, the first clamping edge is clamped on the second clamping edge; the inner side of the outer sleeve is provided with at least two elastic pieces, the elastic pieces are arranged close to the first clamping edge and are arranged at intervals between the first clamping edge, and when the second clamping edge is clamped at the lower side of the first clamping edge, the elastic pieces are propped against the lower side of the first clamping edge.
As a preferable scheme of the invention, the pen further comprises an injection pen refill, wherein the top end of the injection pen refill is provided with a color code cap, the color code cap is conical, the needle head assembly further comprises a lower cap body, the telescopic sleeve is connected to the top of the lower cap body, and the lower cap body is conical and is matched with the color code cap.
As a preferred scheme of the invention, the pen refill holder further comprises a pen refill holder, wherein a needle head pushing mechanism is arranged at the injection end of the pen refill holder, accommodating cavities are respectively arranged at two sides of the pen refill holder, and the needle head pushing mechanism is respectively arranged in the accommodating cavities and can push the lower cap body to push the needle head assembly to be dropped.
As a preferable scheme of the invention, the needle head pushing and falling mechanism comprises a push rod, a second elastic piece and a pushing button, wherein the push rod and the second elastic piece are arranged in the accommodating cavity, the lower end of the push rod is connected with a limiting plate, the second elastic piece is sleeved on the push rod, the top end of the second elastic piece is abutted with the top end of the accommodating cavity and the bottom end of the second elastic piece is abutted with the limiting plate, and the pushing button is arranged on the outer side of the cartridge holder and is connected with the limiting plate through a connecting rod, and pushing the pushing button can enable the push rod to extend out of the cartridge holder and push the needle head assembly to fall.
As a preferable mode of the invention, a sliding hole is arranged on the side wall of the refill holder, the sliding hole is L-shaped and extends towards the injection end of the refill holder, and the connecting rod passes through the sliding hole and is connected with the pushing button.
Compared with the prior art, the invention has the following positive effects:
the invention provides a safe portable insulin injection pen, which comprises a needle head assembly, wherein the needle head assembly comprises a telescopic sleeve, a first elastic piece, a limiting mechanism and a needle tube, the first elastic piece is arranged in the telescopic sleeve, the top end of the first elastic piece is connected with the upper end of the telescopic sleeve, the bottom end of the first elastic piece is connected with the bottom end of the telescopic sleeve, a perforation is arranged at the top end of the telescopic sleeve, the limiting mechanism is connected in the telescopic sleeve and is unlocked when the top end of the telescopic sleeve is pressed downwards, when the limiting mechanism is locked, the first elastic piece and the telescopic sleeve are in a shortened state, the top end of the needle tube penetrates through the perforation and extends to the outer side of the telescopic sleeve, and when the limiting mechanism is unlocked, the first elastic piece and the telescopic sleeve are in an extended state, and the top end of the needle tube is positioned in the telescopic sleeve. When the insulin injection pen is used, after the outer needle sleeve and the inner needle sleeve sleeved outside the needle head assembly are respectively taken down, the initial state of the insulin injection pen is that the limiting mechanism is in a locking state, the top end of the needle tube penetrates through the perforation to extend to the outer side of the telescopic sleeve, then after insulin is injected, the telescopic sleeve contacts a human body and receives certain downward pressure to unlock the limiting mechanism, the first elastic piece and the telescopic sleeve are both stretched, the stretched telescopic sleeve conceals the needle tube at the inner side of the telescopic sleeve, so that the needle tube is prevented from leaking outwards, the outer needle sleeve is covered outside the needle head assembly and discarded, the needle tube is prevented from being stabbed by a hand, and the safety performance of the insulin injection pen is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the safety portable insulin injection pen of the present invention prior to injection;
FIG. 2 is a schematic diagram of another embodiment of the safety portable insulin injection pen of the present invention prior to injection;
FIG. 3 is an enlarged view of a portion of FIG. 2A;
FIG. 4 is a schematic diagram of the structure of the safety portable insulin injection pen of the present invention after injection;
fig. 5 is a schematic view of the internal structure of the cartridge holder of the present invention;
fig. 6 is a schematic view of the external structure of the cartridge holder of the present invention;
fig. 7 is a schematic view of the structure of the needle head assembly and the cartridge holder according to the present invention.
In the figure: 1. a needle assembly; 11. a telescoping sleeve; 111. an outer sleeve; 112. an inner cone; 113. a first clamping edge; 114. a second clamping edge; 115. perforating; 12. a first elastic member; 13. a first connector; 131. triggering a key; 132. a third elastic member; 14. a second connector; 15. a connecting belt; 16. a needle tube; 17. a lower cap body; 18. a spring plate; 2. a cartridge holder; 21. a receiving chamber; 22. a needle push-down mechanism; 221. a second elastic member; 222. a thrust rod; 223. a limiting plate; 224. pushing the button; 225. a connecting rod; 226. pushing the presser foot; 23. a sliding hole; 3. injecting a pen refill; 31. color code cap.
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "front," "rear," "head," "tail," and the like are merely for convenience in describing and simplifying the invention based on the orientation or positional relationship shown in the drawings and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Example 1:
the embodiment provides a safe portable insulin injection pen, as shown in fig. 1-7, which comprises a needle assembly 1, wherein the needle assembly 1 comprises a telescopic sleeve 11, a first elastic piece 12, a limiting mechanism and a needle tube 16. The first elastic element 12 is arranged in the telescopic sleeve 11, the top end of the first elastic element 12 is connected with the upper end of the telescopic sleeve 11, the bottom end of the first elastic element 12 is connected with the bottom end of the telescopic sleeve 11, a perforation 115 is arranged at the top end of the telescopic sleeve 11, the lower end of the needle tube 16 passes through the bottom end of the telescopic sleeve 11 and the top end of the needle tube 16 can pass through the perforation 115, and the first elastic element 12 is sleeved on the outer side of the needle tube 16. The stop gear is connected in telescopic tube 11 and when pressing down telescopic tube 11's top limit mechanism unblock, and when stop gear locking, first elastic component 12 and telescopic tube 11 all are in the state of shortening and the top of needle tubing 16 passes perforation 115 and extends to telescopic tube 11's outside, and when stop gear unblock, first elastic component 12 and telescopic tube 11 all are in the state of elongation and the top of needle tubing 16 is located telescopic tube 11.
When the insulin injection pen in this embodiment is used, after the outer needle sleeve and the inner needle sleeve sleeved outside the needle head assembly 1 are respectively taken down, the initial state of the insulin injection pen is that the limiting mechanism is in a locking state, the top end of the needle tube 16 passes through the perforation 115 to extend to the outer side of the telescopic sleeve 11, then after insulin is injected, the telescopic sleeve 11 contacts a human body and receives certain downward pressure, so that the limiting mechanism is unlocked, the first elastic piece 12 and the telescopic sleeve 11 are both elongated, the needle tube 16 is hidden at the inner side of the telescopic sleeve 11 after the elongation, thereby avoiding the needle tube 16 from leaking outwards, and then the outer needle sleeve is covered outside the needle head assembly 1 to be discarded, thereby avoiding the needle tube 16 from being stabbed due to contact with hands, and improving the safety performance of the insulin injection pen. The insulin injection pen in the embodiment can automatically hide the needle tip after the continuous injection method is released after the injection is finished, so that the needle puncture is prevented to the greatest extent, the injection such as subcutaneous insulin is ensured to be absorbed to the greatest extent, and the ideal effect is achieved to the greatest extent.
Preferably, as shown in fig. 1, the limiting mechanism comprises a first connecting piece 13 and a second connecting piece 14, wherein the top end of the first connecting piece 13 is connected with the top end of the telescopic sleeve 11, the lower end of the first connecting piece is arranged in a downward extending mode, the bottom end of the second connecting piece 14 is connected with the bottom end of the telescopic sleeve 11, the top end of the second connecting piece extends upwards to the lower side of the first connecting piece 13, and the bottom end of the first connecting piece 13 is connected with the top end of the second connecting piece 14 through a connecting belt 15. When the top end of the telescopic sleeve 11 is pressed downwards the first connection piece 13 moves downwards and breaks the connection strap 15. The first and second connection members 13 and 14 are disposed inside the first elastic member 12. Preferably, the connecting belt is a hard adhesive belt, and the hard adhesive belt is provided with a break-off point. The connecting band can be strip-shaped or sheet-shaped. In addition, the connecting belt can also be made of brittle and breakable materials, such as thin glass sheets, brittle plastics or ceramic sheets, and the like.
When the telescopic sleeve 11 is pressed down, the first connecting piece 13 is driven to move downwards, the connecting belt 15 is broken under force, the first connecting piece 13 is separated from the second connecting piece 14, the first elastic piece 12 stretches, the telescopic sleeve 11 is driven to stretch, the top end of the telescopic sleeve 11 is higher than the top end of the needle tube 16, and the needle tube 16 is hidden inside the telescopic sleeve.
Preferably, as shown in fig. 3, the first connecting piece 13 and the second connecting piece 14 are arranged in a vertically staggered manner, and the connecting belt 15 is connected to the adjacent side of the first connecting piece 13 and the second connecting piece 14, so that the first connecting piece 13 can be staggered with the second connecting piece 14 when moving downwards, the influence of the second connecting piece 14 is avoided, and the connecting belt 15 is easier to deform and break when the first connecting piece 13 moves downwards. Preferably, the connecting band 15 forms an included angle of 10 ° -30 ° with the intermediate shaft of the needle tube, so that the connecting band 15 can firmly connect the first connecting piece 13 and the second connecting piece 14, and the first elastic piece is in a compressed state, and the connecting band 15 is bent and deformed to be easily broken when the first connecting piece 13 moves downwards.
As shown in fig. 3, inclined surfaces are disposed at opposite ends of the first connecting member 13 and the second connecting member 14, and the inclined surfaces on the first connecting member 13 and the inclined surfaces on the second connecting member 14 are disposed in parallel to avoid the second connecting member 14 blocking the downward movement of the first connecting member 13.
Preferably, the first and second connection members 13 and 14 are ceramic or glass rods, and the first and second connection members 13 and 14 and the connection band 15 are integrally formed. The width of the connecting band 15 is smaller than the diameters of the first and second connection members 13 and 14.
Preferably, as shown in fig. 1, the first connecting member 13 is in a rod shape, the top end of the first connecting member 13 extends to the upper side of the telescopic sleeve 11 and is connected with a trigger button 131 at the top end thereof, and a third elastic member 132 is provided between the trigger button 131 and the telescopic sleeve 11.
When the insulin injection pen is injecting insulin, the skin of a person presses the trigger button 131, and the trigger button 131 drives the first connecting piece 13 to move downwards to break the connecting belt 15.
Preferably, the telescopic sleeve 11 comprises an outer sleeve 111 and at least one inner cone 112, the inner cone 112 is disposed inside the outer sleeve 111 and can move up and down relative to the outer sleeve 111, the perforation 115 is disposed at the top end of the inner cone 112, the first elastic member 12 is disposed inside the inner cone 112 and the top end thereof is connected with the upper end of the inner cone 112, when the first elastic member 12 is in a compressed state, the inner cone 112 is retracted inside the outer sleeve 111, and when the first elastic member 12 is in an extended state, the inner cone 112 extends out of the outer sleeve 111 upward and has the top end thereof higher than the needle tube 16. The outer sleeve 111 has a cylindrical structure with an upper end opened.
In addition, a plurality of inner cones 112 may be provided, and the plurality of inner cones are nested in sequence from inside to outside, and the bottom outer diameter of the inner cone is larger than the top inner diameter of the adjacent outer inner cone, so that when the telescopic sleeve 11 is extended, the inner cone 112 moves upward relative to the outer inner cone 112 and is connected to each other.
Preferably, as shown in fig. 2, when the first elastic member is in a compressed state, the top end of the inner cone 112 protrudes to the outside of the outer sleeve 111, the bottom end of the inner cone 112 is disposed with a gap from the bottom end of the outer sleeve 111, and the height of the gap is greater than the length of the connection band 15.
When the trigger button 131 is not pressed, the skin of the person presses the top end of the inner cone 112 when the insulin injection pen injects insulin, and the inner cone 112 drives the first connecting piece 13 to move downwards to break the connecting band 15.
Preferably, as shown in fig. 4, a first locking edge 113 extending inward is provided around the top end of the outer sleeve 111, and the outer sleeve 111 is cylindrical, and a second locking edge 114 extending outward is provided around the bottom end of the inner cone 112. When the inner cone 112 moves to the upper side of the outer sleeve 111, the first clamping edge 113 is clamped on the second clamping edge 114. The outer diameter of the second clamping edge 114 is equal to the inner diameter of the outer sleeve 111 and is larger than the inner diameter of the circular ring formed by the first clamping edge 113, so that the first elastic piece 12 limits the upward moving height of the inner cone 112 when being extended. At least two elastic pieces 18 are arranged on the inner side of the outer sleeve 111, the elastic pieces 18 are arranged close to the first clamping edges 113 and are arranged at intervals between the elastic pieces and the first clamping edges 113, and when the second clamping edges 114 are clamped on the lower sides of the first clamping edges 113, the elastic pieces 18 are abutted against the lower sides of the first clamping edges 113. The elastic pieces 18 may be provided in four, and the four elastic pieces 18 are uniformly provided along the inner circumference of the outer sleeve 111. The elastic sheet 18 is obliquely upwards arranged towards the central axis of the outer sleeve 111, when the inner cone 112 slides upwards in the outer sleeve 111, the second clamping edge 114 presses the elastic sheet 18 towards the inner wall of the outer sleeve 111 and slides upwards through the elastic sheet 18, when the inner cone 112 moves to the highest position, the second clamping edge 114 is clamped on the upper side of the opened blanket elastic sheet 18, the second clamping edge 114 is clamped between the first clamping edge 113 and the elastic sheet 18, the elastic sheet 18 enables the telescopic sleeve to be incapable of retracting after being stretched, and the telescopic sleeve always protects a needle tube on the inner side of the telescopic sleeve after being stretched, so that the needle tube is prevented from leaking outwards.
Preferably, as shown in fig. 5, the safe portable insulin injection pen provided in this embodiment further includes an injection pen refill 3, a color code cap 31 is provided at the top end of the injection pen refill 3, the color code cap 31 is tapered, the needle assembly further includes a lower cap body 17, the telescopic sleeve 11 is connected to the top of the lower cap body 17, and the lower cap body 17 is tapered and is adapted to the color code cap 31. The needle assembly 1 is connected to the injection pen core 3 by the lower cap 17 being snapped onto the color-coded cap 31. The bottom end of the needle cannula 16 extends through the bottom end of the outer sleeve 111 into the lower cap 17.
Preferably, the safe portable insulin injection pen provided in this embodiment further includes a pen core frame 2, a needle pushing mechanism 22 is disposed at an injection end of the pen core frame 2, accommodating cavities 21 are respectively disposed at two sides of the pen core frame 2, and the needle pushing mechanism 22 is respectively disposed in the accommodating cavities 21 and can push the lower cap 17 to push the needle assembly 1 to be dropped.
After insulin injection, the disposable needle assembly 1 needs to be discarded, and the needle assembly 1 can be pushed down through the needle push-down mechanism 22, so that the manual unscrewing of the needle is avoided, the hand is further prevented from contacting the needle part, the puncture is avoided, and the needle assembly 1 is taken down simply and conveniently and is easy to operate.
Preferably, needle push-down mechanism 22 includes a pusher 222, a second resilient member 221, and a push button 224. The thrust rod 222 and the second elastic piece 221 are disposed in the accommodating cavity 21, the lower end of the thrust rod 222 is connected with the limiting plate 223, the second elastic piece 221 is sleeved on the thrust rod 222, the top end of the second elastic piece 221 is abutted with the top end of the accommodating cavity 21, and the bottom end of the second elastic piece is abutted with the limiting plate 223. The push button 224 is disposed at the outer side of the cartridge holder 2 and connected with the limiting plate 223 through the connecting rod 225, and pushing the push button 224 can extend the push rod 222 to the outer side of the cartridge holder 2 and push the needle assembly 1 down. Preferably, a pressing leg 226 is connected to the tip of the thrust rod 222, and the pressing leg 226 is provided on the upper side of the cartridge holder 2.
When insulin is injected, the push button 224 is manually pushed to extend the push rod 222 to the outside of the cartridge holder 2, so that the lower cap 17 is pushed, and the needle assembly 1 fitted on the color-coded cap 31 is pushed down.
Preferably, as shown in fig. 6, a sliding hole 23 is provided on a side wall of the cartridge holder 2, the sliding hole 23 is L-shaped and extends toward an injection end of the cartridge holder 2, and a connection rod 225 is connected to the push button 224 through the sliding hole 23.
When the push button 224 moves to the position of the transverse hole of the L-shaped sliding hole 23, the push button 224 drives the push rod 222 to retract inside the cartridge holder 2; when insulin is injected, the push button 224 is moved to a side of the vertical hole of the L-shaped sliding hole 23 near the injection end of the cartridge holder 2, the push button 224 pushes the push rod 222 toward the injection end of the cartridge holder 2, and the push foot 226 pushes the lower cap 17, thereby pushing the needle assembly 1 fitted on the color-code cap 31 down.
The first elastic piece, the second elastic piece and the third elastic piece are springs with different types. The term "upper" as used herein refers to the end proximal to the injection needle and "lower" refers to the end distal from the injection needle.
The above description is only of the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can make several variations and modifications without departing from the inventive concept, and it is intended to cover the scope of the present invention.
Claims (10)
1. The utility model provides a safe portable insulin injection pen, its characterized in that, includes syringe needle subassembly (1), syringe needle subassembly (1) include telescopic tube (11), first elastic component (12), stop gear and needle tubing (16), first elastic component (12) set up in telescopic tube (11), the top of first elastic component (12) with the upper end of telescopic tube (11) is connected just the bottom of first elastic component (12) with the bottom of telescopic tube (11) is connected the top of telescopic tube (11) is provided with perforation (115), stop gear connect in telescopic tube (11) and when pressing down the top of telescopic tube (11) stop gear unblock, when stop gear locks, first elastic component (12) with telescopic tube (11) all are in shorten the state just the top of needle tubing (16) is worn perforation (115) extends to the outside of telescopic tube (11), when stop gear unblocks, first elastic component (12) and needle tubing (16) are in telescopic tube (11) top all are in telescopic tube (11) state.
2. The safe portable insulin injection pen according to claim 1, wherein the limit mechanism comprises a first connecting piece (13) and a second connecting piece (14), the top end of the first connecting piece (13) is connected with the top end of the telescopic sleeve (11) and the lower end of the first connecting piece extends downwards, the bottom end of the second connecting piece (14) is connected with the bottom end of the telescopic sleeve (11) and the top end of the second connecting piece extends upwards to the lower side of the first connecting piece (13), the bottom end of the first connecting piece (13) is connected with the top end of the second connecting piece (14) through a connecting belt (15), and when the top end of the telescopic sleeve (11) is pressed downwards, the first connecting piece (13) moves downwards and breaks the connecting belt (15).
3. The safe portable insulin injection pen according to claim 2, wherein the first connecting piece (13) and the second connecting piece (14) are arranged in a vertically staggered manner, the connecting belt is connected to one side of the first connecting piece (13) and one side of the second connecting piece (14) which are adjacent, inclined surfaces are arranged at opposite ends of the first connecting piece (13) and the second connecting piece (14), and the inclined surfaces of the first connecting piece (13) and the inclined surfaces of the second connecting piece (14) are arranged in parallel.
4. The safe portable insulin injection pen according to claim 2, wherein the first connecting piece (13) is rod-shaped, the top end of the first connecting piece (13) extends to the upper side of the telescopic sleeve (11) and is connected with a trigger button (131) at the top end thereof, and a third elastic piece (132) is arranged between the trigger button (131) and the telescopic sleeve (11).
5. The safety portable insulin injection pen according to claim 1, wherein the telescopic sleeve (11) comprises an outer sleeve (111) and at least one inner cone (112), the inner cone (112) is arranged at the inner side of the outer sleeve (111) and can move up and down relative to the outer sleeve (111), the through hole (115) is arranged at the top end of the inner cone (112), the first elastic member (12) is arranged at the inner side of the inner cone (112) and the top end thereof is connected with the upper end of the inner cone (112), when the first elastic member (12) is in a compressed state, the inner cone (112) is contracted in the outer sleeve (111), and when the first elastic member (12) is in an extended state, the inner cone (112) extends out of the outer sleeve (111) upwards and makes the top end thereof higher than the needle tube (16).
6. The safe portable insulin injection pen according to claim 5, wherein a first clamping edge (113) extending towards the inner side of the outer sleeve (111) is arranged around the top end of the outer sleeve (111), the outer sleeve (111) is cylindrical, a second clamping edge (114) extending towards the outer side of the inner cone (112) is arranged around the bottom end of the inner cone (112), and when the inner cone (112) moves to the upper side of the outer sleeve (111), the first clamping edge (113) is clamped on the second clamping edge (114); at least two elastic pieces (18) are arranged on the inner side of the outer sleeve (111), the elastic pieces (18) are arranged close to the first clamping edges (113) and are arranged at intervals between the first clamping edges (113), and when the second clamping edges (114) are clamped on the lower sides of the first clamping edges (113), the elastic pieces (18) are abutted against the lower sides of the first clamping edges (113).
7. The safe portable insulin injection pen according to claim 5, further comprising an injection pen refill (3), wherein a color code cap (31) is arranged at the top end of the injection pen refill (3), the color code cap (31) is conical, the needle assembly further comprises a lower cap body (17), the telescopic sleeve (11) is connected to the top of the lower cap body (17), and the lower cap body (17) is conical and is matched with the color code cap (31).
8. The safe portable insulin injection pen according to claim 7, further comprising a pen core frame (2), wherein a needle head pushing mechanism (22) is arranged at an injection end of the pen core frame (2), accommodating cavities (21) are respectively arranged at two sides of the pen core frame (2), and the needle head pushing mechanism (22) is respectively arranged in the accommodating cavities (21) and can push the lower cap body (17) to push the needle head assembly (1) down.
9. The safe portable insulin injection pen according to claim 8, wherein the needle pushing mechanism (22) comprises a pushing rod (222), a second elastic piece (221) and a pushing button (224), the pushing rod (222) and the second elastic piece (221) are arranged in the accommodating cavity (21), a limiting plate (223) is connected to the lower end of the pushing rod (222), the second elastic piece (221) is sleeved on the pushing rod (222), the top end of the second elastic piece (221) is abutted to the top end of the accommodating cavity (21) and the bottom end of the second elastic piece is abutted to the limiting plate (223), the pushing button (224) is arranged on the outer side of the cartridge holder (2) and is connected with the limiting plate (223) through a connecting rod (225), and pushing the pushing button (224) can enable the pushing rod (222) to extend to the outer side of the cartridge holder (2) and push the needle assembly (1) to be dropped.
10. The safe portable insulin injection pen according to claim 9, characterized in that a sliding hole (23) is provided on a side wall of the cartridge holder (2), the sliding hole (23) is L-shaped and extends toward an injection end of the cartridge holder (2), and the connecting rod (225) is connected with the push button (224) through the sliding hole (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310650893.3A CN116870299B (en) | 2023-06-02 | 2023-06-02 | Safe and portable insulin injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310650893.3A CN116870299B (en) | 2023-06-02 | 2023-06-02 | Safe and portable insulin injection pen |
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| Publication Number | Publication Date |
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| CN116870299A true CN116870299A (en) | 2023-10-13 |
| CN116870299B CN116870299B (en) | 2025-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310650893.3A Active CN116870299B (en) | 2023-06-02 | 2023-06-02 | Safe and portable insulin injection pen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121102643A (en) * | 2025-11-14 | 2025-12-12 | 苏州万海医疗器械有限公司 | Assembly method and injection pen |
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| CN101007193A (en) * | 2006-01-25 | 2007-08-01 | 吕丰辉 | safety syringe |
| JP2015167626A (en) * | 2014-03-05 | 2015-09-28 | テルモ株式会社 | Liquid medicine container |
| US20180147365A1 (en) * | 2015-04-28 | 2018-05-31 | Sterilance Medical (Suzhou) Inc. | Insulin pen needle with needle tip protection |
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| CN121102643A (en) * | 2025-11-14 | 2025-12-12 | 苏州万海医疗器械有限公司 | Assembly method and injection pen |
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|---|---|
| CN116870299B (en) | 2025-09-02 |
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