CN117323511A - Front end anti-needling insulin pen needle - Google Patents

Front end anti-needling insulin pen needle Download PDF

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Publication number
CN117323511A
CN117323511A CN202311517917.4A CN202311517917A CN117323511A CN 117323511 A CN117323511 A CN 117323511A CN 202311517917 A CN202311517917 A CN 202311517917A CN 117323511 A CN117323511 A CN 117323511A
Authority
CN
China
Prior art keywords
needle
shell
seat
sliding buckle
injection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311517917.4A
Other languages
Chinese (zh)
Inventor
陆军
陈天柱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Caina Medical Technology Co ltd
Original Assignee
Jiangsu Caina Medical Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Caina Medical Technology Co ltd filed Critical Jiangsu Caina Medical Technology Co ltd
Priority to CN202311517917.4A priority Critical patent/CN117323511A/en
Publication of CN117323511A publication Critical patent/CN117323511A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • A61M5/3216—Caps placed transversally onto the needle, e.g. pivotally attached to the needle base
    • 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
    • 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
    • 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
    • A61M5/3216—Caps placed transversally onto the needle, e.g. pivotally attached to the needle base
    • A61M2005/3217—Means to impede repositioning of protection cap from needle covering to needle uncovering position, e.g. catch mechanisms

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (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

The invention relates to the field of medical equipment, in particular to a front-end anti-needling insulin pen needle, which comprises: a housing; the needle seat is fixed in the shell and is provided with an injection needle extending out of the head end of the shell; the sliding buckle is sleeved on the needle seat and is in sliding fit with the needle seat, and a buckling part is arranged on the outer surface of the sliding buckle; the needle point protection sleeve is arranged in the shell in a sliding way, a spring plate which is arranged on one side is arranged on the inner wall of the needle point protection sleeve, a spring is clamped between the needle point protection sleeve and the needle seat, the needle point protection sleeve is retracted into the shell in an injection state, the needle point protection sleeve is sleeved on the sliding buckle, and the spring plate hooks the buckling part to expose the needle point of the injection needle; under the needle withdrawing state, the needle tip protecting sleeve extends out of the head end of the shell to cover the needle tip of the injection needle and drive the sliding buckle to separate from the needle seat, and the sliding buckle is dislocated with the needle seat under the action of the elastic sheet, so that the end part of the sliding buckle is abutted with the end part of the needle seat, and the needle tip protecting sleeve is locked.

Description

Front end anti-needling insulin pen needle
Technical Field
The invention relates to the field of medical equipment, in particular to a front-end anti-needling insulin pen needle.
Background
Insulin injection is widely used as a method for treating diabetes, and the main function of the insulin injection is to accurately infuse insulin into a diabetic patient through an injection device so as to achieve the aim of controlling the blood sugar of the patient.
The traditional injection form is the syringe needle structure, and injection device includes needle file, needle tubing and outside protective housing, removes the protective housing before the use after, and insulin syringe needle directly exposes outside, because it does not have the safety protection structure after the use, the accidental mistake touches the syringe needle and leads to cross infection easily, has the risk of being used repeatedly in addition.
At present, insulin pen needles appear on the market, can be used like pens in a portable manner, and the design of needle head protection is considered, but the structure of the product is complex and different, and particularly when the front end of the needle head is protected, various parts are required to be moved, rotated and the like to be matched for triggering, so that the problems of complex principle, high manufacturing cost, multiple parts, complex assembly, high failure rate and the like exist, and further optimization is hoped.
Disclosure of Invention
Based on the problems, the invention aims to provide the front-end anti-needling insulin pen needle, optimize the needle head protection principle, simplify the product structure, improve the use safety and convenience and reduce the cost.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a front end anti-needlestick insulin pen needle, comprising:
a housing;
the needle seat is fixed in the shell and is provided with an injection needle extending out of the head end of the shell;
the sliding buckle is sleeved on the needle seat and is in sliding fit with the needle seat, and a buckling part is arranged on the outer surface of the sliding buckle;
the needle point protection sleeve is arranged in the shell in a sliding way, a spring plate which is arranged on one side is arranged on the inner wall of the needle point protection sleeve, and a spring is clamped between the needle point protection sleeve and the needle seat;
in the injection state, the needle point protective sleeve is retracted into the shell, the needle point protective sleeve is sleeved on the sliding buckle, and the elastic sheet hooks the buckling part, so that the needle point of the injection needle is exposed;
under the needle withdrawing state, the needle tip protecting sleeve extends out of the head end of the shell to cover the needle tip of the injection needle and drive the sliding buckle to separate from the needle seat, and the sliding buckle is dislocated with the needle seat under the action of the elastic sheet, so that the end part of the sliding buckle is abutted with the end part of the needle seat, and the needle tip protecting sleeve is locked.
Optionally, the elastic sheet is arranged at the tail end of the needle tip protective sleeve and obliquely extends out towards the head end of the needle tip protective sleeve.
Optionally, a gap of 0.4 mm-0.8 mm is reserved between the sliding buckle and the needle tip protective sleeve.
Optionally, a plurality of travel blocks uniformly distributed on the circumference are arranged on the outer wall of the needle tip protective sleeve, and a guide groove extending along the axial direction from the tail end of the shell is arranged on the inner wall of the shell and does not penetrate the head end of the shell.
Optionally, the needle seat is provided with a convex edge, and the inner wall of the shell is provided with a caulking groove for limiting the convex edge.
Optionally, one end of the spring abuts against the ledge and the other end abuts against the travel block.
Optionally, the sliding button is provided with a rib on the inner surface to reduce the clearance with the needle hub.
Optionally, a connecting thread connected with the insulin injection pen is arranged on the inner wall of the shell.
Optionally, a connecting thread connected with the insulin injection pen is arranged on the inner wall of the needle seat.
Optionally, the outer surface of the needle seat is provided with a convex rib, and the needle seat is in interference fit with the shell through the convex rib.
In summary, compared with the prior art, the front-end anti-needling insulin pen needle has the beneficial effects that the needle point protection sleeve with telescopic action is designed according to the condition that the front end of the injection needle is exposed after the front-end anti-needling insulin pen needle is used, and the principle that a single-side elastic sheet pushes a sliding buckle to bias and misplacement with a needle seat is adopted, so that the travel of the needle point protection sleeve is limited, the needle point protection sleeve cannot retract again after covering the needle point, the product structure is greatly simplified, the cost is reduced, and the use safety and convenience are improved.
Drawings
FIG. 1 is an exploded view of the structure of the front end anti-piercing insulin pen needle provided in embodiment 1 of the present invention;
fig. 2 is a schematic diagram of the front end anti-piercing insulin pen needle according to embodiment 1 of the present invention when shipped;
FIG. 3 is a schematic diagram of the structure of the front end anti-piercing insulin pen needle according to embodiment 1 of the present invention;
fig. 4 is a schematic diagram of the structure of the front end anti-piercing insulin pen needle according to embodiment 1 of the present invention after needle withdrawal;
fig. 5 is a schematic diagram of the structure of the front end anti-piercing insulin pen needle according to embodiment 2 of the present invention.
In the figure:
1. a housing; 11. a guide groove; 12. a caulking groove;
2. a needle stand; 21. an injection needle; 22. a convex edge; 23. convex ribs;
3. a sliding buckle; 31. a fastening part; 32. a rib;
4. needle tip protective sleeve; 41. a spring plate; 42. a travel block;
5. and (3) a spring.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, mechanically connected, electrically connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Example 1:
referring to fig. 1 and 2, the preferred embodiment provides a front end anti-piercing insulin pen needle, which comprises a housing 1, a needle seat 2, a sliding buckle 3 and a needle tip protective sleeve 4.
The tail end of the shell 1 is connected with an insulin injection pen, and the inner wall of the shell 1 is provided with connecting threads connected with the insulin injection pen; the needle seat 2 is fixed in the shell 1, and the needle seat 2 is provided with an injection needle 21 extending out of the head end of the shell 1; the sliding buckle 3 is sleeved on the needle seat 2 and is in sliding fit with the needle seat 2, and a buckling part 31 is arranged on the outer surface of the sliding buckle 3; the needle tip protective sleeve 4 is arranged in the shell 1 in a sliding way, a spring piece 41 which is arranged on one side is arranged on the inner wall of the needle tip protective sleeve 4, and a spring 5 is clamped between the needle tip protective sleeve 4 and the needle seat 2.
The elastic sheet 41 is integrally formed by the needle point protective sleeve 4, is arranged at the tail end of the needle point protective sleeve 4, and obliquely extends out towards the head end of the needle point protective sleeve 4, and when the needle point protective sleeve 4 moves towards the tail end, the elastic sheet 41 is abutted against the inner wall of the needle point protective sleeve 4, so that the axial movement is not influenced; when the needle tip protection sleeve 4 moves toward the head end, the elastic piece 41 opens so as to hook the fastening portion 31 of the sliding fastener 3.
In particular, the needle seat 2 and the sliding buckle 3 are basically in gapless fit, a gap of 0.4 mm-0.8 mm is reserved between the sliding buckle 3 and the needle tip protective sleeve 4, and here, for example, 0.5mm (50 threads) is taken as an example, once the sliding buckle 3 is separated from the sliding buckle 3 and the sliding buckle 3 is axially misplaced, the sliding buckle 3 and the needle tip protective sleeve 4 cannot be accurately matched again.
Further, the inner surface of the sliding buckle 3 is provided with a convex rib 32 for reducing the clearance matched with the needle seat 2, and the convex rib 32 can be slightly in interference fit with the surface of the needle seat 2, so that the sliding buckle is more difficult to be matched again after being separated.
Based on the above structure, in the injection state, as shown in fig. 3, the needle tip protecting sleeve 4 is retracted into the housing 1, the needle tip protecting sleeve 4 is sleeved on the sliding buckle 3, and the elastic sheet 41 hooks the buckling part 31, so that the needle tip of the injection needle 21 is exposed;
in the needle-withdrawing state, as shown in fig. 4, the needle tip protecting sleeve 4 extends out of the head end of the housing 1 to cover the needle tip of the injection needle 21 and drive the sliding buckle 3 to separate from the needle seat 2, the sliding buckle 3 is dislocated with the needle seat 2 under the action of the elastic sheet 41, and the end part of the sliding buckle 3 abuts against the end part of the needle seat 2, so that the needle tip protecting sleeve 4 is locked.
Further, the outer wall of the needle tip protective sleeve 4 is provided with a plurality of travel blocks 42 uniformly distributed on the circumference, the inner wall of the shell 1 is provided with a guide groove 11 extending along the axial direction from the tail end of the shell 1, and the guide groove 11 does not penetrate the head end of the shell 1, so that the needle tip protective sleeve 4 is ensured to move axially accurately and cannot be separated from the head end of the shell 1.
In particular, the hub 2 is provided with a flange 22, and the inner wall of the housing 1 is provided with a caulking groove 12 limiting the flange 22. Further, one end of the spring 5 abuts against the convex edge 22, and the other end abuts against the stroke block 42, so that the spring 5 is reliably mounted.
When the insulin pen is used, as the insulin injection pen is connected with the insulin pen needle, the pen needle is directly pricked to a human body, the needle point protective sleeve 4 overcomes the elasticity of the spring 5 and is retracted into the shell 1 to expose the injection needle 21, and injection is completed; then the pen needle is pulled out, the needle point protective sleeve 4 is ejected under the action of the elasticity of the spring 5, the sliding buckle 3 is hooked by the elastic sheet 41 to be separated from the needle seat 2, the sliding buckle 3 is dislocated with the needle seat 2 under the action of the elastic sheet 41, the axial displacement of the sliding buckle 3 and the needle point protective sleeve 4 is limited, and the needle point protective sleeve 4 keeps shielding the needle point of the injection needle 21, so that the aim of preventing needling is fulfilled.
Example 2:
on the basis of embodiment 1, this embodiment provides a deformation structure of front end anti-needling insulin pen needle, and the difference is that insulin injection pen is not connected with shell 1, but is directly connected with needle file 2 to reduce engineering realization degree of difficulty.
Specifically, be provided with the connecting thread who is connected with insulin injection pen on the inner wall of needle file 2, as shown in fig. 5, further, the surface of needle file 2 is provided with protruding muscle 23, and needle file 2 passes through protruding muscle 23 interference fit with shell 1, guarantees that overall structure is reliably assembled, and possesses the function of preventing the acupuncture equally.
In summary, the front end anti-needling insulin pen needle designs the needle tip protection sleeve 4 with telescopic action aiming at the condition that the front end of the injection needle 21 is exposed after use, and adopts the principle that the unilateral elastic sheet 41 pushes the sliding buckle 3 to bias and misplace with the needle seat 2, so that the travel of the needle tip protection sleeve 4 is limited, and the needle tip protection sleeve 4 cannot retract again after covering the needle tip, thereby greatly simplifying the product structure, reducing the cost and improving the use safety and convenience.
The above embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above embodiments, but can be variously changed and modified without departing from the spirit and scope of the present invention, which is within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A front end anti-needlestick insulin pen needle, comprising:
a housing (1);
a needle seat (2) fixed in the shell (1), wherein an injection needle (21) extending out of the head end of the shell (1) is arranged on the needle seat (2);
the sliding buckle (3) is sleeved on the needle seat (2) and is in sliding fit with the needle seat (2), and a buckling part (31) is arranged on the outer surface of the sliding buckle (3);
the needle point protection sleeve (4) is arranged in the shell (1) in a sliding way, a spring piece (41) which is arranged at one side is arranged on the inner wall of the needle point protection sleeve (4), a spring (5) is clamped between the needle point protection sleeve (4) and the needle seat (2),
in an injection state, the needle tip protective sleeve (4) is retracted into the shell (1), the needle tip protective sleeve (4) is sleeved on the sliding buckle (3), and the elastic sheet (41) hooks the buckling part (31) to expose the needle tip of the injection needle (21);
under the needle withdrawing state, the needle tip protective sleeve (4) stretches out of the head end of the shell (1) to cover the needle tip of the injection needle (21), the sliding buckle (3) is driven to be separated from the needle seat (2), the sliding buckle (3) is dislocated with the needle seat (2) under the action of the elastic sheet (41), and the end part of the sliding buckle (3) is abutted to the end part of the needle seat (2), so that the needle tip protective sleeve (4) is locked.
2. The front-end anti-needling insulin pen needle according to claim 1, characterized in that the spring piece (41) is arranged at the tail end of the needle tip protecting sleeve (4) and extends obliquely towards the head end of the needle tip protecting sleeve (4).
3. The front-end anti-needling insulin pen needle according to claim 1, characterized in that a gap of 0.4 mm-0.8 mm is left between the sliding buckle (3) and the needle tip protective sleeve (4).
4. The front-end needling-prevention insulin pen needle according to claim 1, characterized in that a plurality of circumferentially uniformly distributed travel blocks (42) are arranged on the outer wall of the needle tip protective sleeve (4), a guide groove (11) extending along the axial direction from the tail end of the outer shell (1) is arranged on the inner wall of the outer shell (1), and the guide groove (11) does not penetrate through the head end of the outer shell (1).
5. The front-end anti-needling insulin pen needle according to claim 4, characterized in that the needle seat (2) is provided with a convex edge (22), and the inner wall of the shell (1) is provided with a caulking groove (12) limiting the convex edge (22).
6. The front end anti-needlestick insulin pen needle as in claim 5, characterized in that one end of the spring (5) abuts against the ledge (22) and the other end abuts against the travel block (42).
7. Front end anti-needlestick insulin pen needle according to claim 1, characterized in that the inner surface of the slide button (3) is provided with a rib (32) reducing the clearance with the needle holder (2).
8. Front end anti-needlestick insulin pen needle according to claim 1, characterized in that the inner wall of the housing (1) is provided with connecting threads for connection with an insulin injection pen.
9. The front-end anti-needling insulin pen needle according to claim 1, characterized in that the inner wall of the needle holder (2) is provided with connecting threads connected with an insulin injection pen.
10. The front-end anti-needling insulin pen needle according to claim 9, characterized in that the outer surface of the needle seat (2) is provided with a convex rib (23), and the needle seat (2) and the shell (1) are in interference fit through the convex rib (23).
CN202311517917.4A 2023-11-14 2023-11-14 Front end anti-needling insulin pen needle Pending CN117323511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311517917.4A CN117323511A (en) 2023-11-14 2023-11-14 Front end anti-needling insulin pen needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311517917.4A CN117323511A (en) 2023-11-14 2023-11-14 Front end anti-needling insulin pen needle

Publications (1)

Publication Number Publication Date
CN117323511A true CN117323511A (en) 2024-01-02

Family

ID=89295671

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311517917.4A Pending CN117323511A (en) 2023-11-14 2023-11-14 Front end anti-needling insulin pen needle

Country Status (1)

Country Link
CN (1) CN117323511A (en)

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