CN219835960U

CN219835960U - Insulin pen

Info

Publication number: CN219835960U
Application number: CN202321190453.6U
Authority: CN
Inventors: 曾柯宇
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-10-17
Anticipated expiration: 2033-05-17

Abstract

The utility model relates to the technical field of medical appliances, and provides an insulin pen, which aims at solving the problems that after the needle head of the existing insulin pen is disassembled, a needle is still exposed and the needle head is easy to stab in the cleaning process of the needle head; the needle head comprises a needle and a needle sleeve wrapped on the periphery of the needle, the needle is erected in an inner cavity of the needle sleeve, the needle is in sliding connection with the needle sleeve, one end, close to the tail end of the needle, of the needle sleeve is detachably connected with the pen body, and the needle head is convenient to detach from the pen body; the plurality of pressing blocks arranged on the outer side wall of the needle sleeve are connected with the needle sleeve in a sliding manner; the pressing block is provided with a connecting component, and the connecting component penetrates through the side wall surface of the needle sleeve, so that the pressing block and the puncture needle can synchronously slide. The pressing block is pressed to slide along the needle sleeve, so that the puncture needle can synchronously slide and be hidden in the needle sleeve, and the puncture of operators during the process of disassembling the needle head and subsequent needle head treatment is avoided.

Description

Insulin pen

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an insulin pen.

Background

Insulin pens are devices used to inject insulin to treat diabetes, requiring replacement of the needle after each injection. The diabetics can frequently inject insulin, in order to lighten the injury to the skin and reduce pain, the needle head of the insulin pen is thinner and shorter relative to the common blood taking needle head and scalp needle, but the needle head is extremely easy to stab in the process of disassembling the needle head after injection, the risk of cross infection is increased, and the safety of nursing staff is endangered. Therefore, the insulin pen which is convenient to assemble and disassemble and avoids stabbing appears in the prior art.

The utility model discloses a publication number is CN 209679205U's patent discloses an insulin pen of convenient dismantlement syringe needle, including insulin pen main part, device piece and syringe needle main part, the screw thread board is all installed to the both sides of insulin pen main part outer wall, and the outer wall cover of screw thread board is equipped with the screwed ring, the inside of insulin pen main part is provided with the piston rod, the device piece is installed on the top of insulin pen main part. Through the meshing connection of first rack and second rack with the gear respectively for operating personnel presses first rack and can drive the second rack and slide and leave corresponding spacing inslot with this and remove spacing fixed to the syringe needle main part, continues to press first rack and makes it extrude the hypotenuse in the extrusion groove on the ejecting piece, can make ejecting piece upwards slide and extrude out the inside of syringe needle main part follow the recess. Although the insulin pen can be disassembled in a non-contact way, the needle of the disassembled needle is still exposed, and the needle cleaning process is easy to be stabbed.

Therefore, there is a need for an insulin pen that is easy to assemble and disassemble, and in which the lancet is retractable during assembly and disassembly, and which is highly safe.

Disclosure of Invention

The utility model aims to solve the problem that after the needle head of the existing insulin pen is disassembled, the needle is still exposed, and the needle head is easy to be pricked in the cleaning process. The utility model provides an insulin pen, which can realize the technical effects of convenient disassembly and assembly, retractable needle during disassembly and assembly and high safety.

The utility model is realized by the following technical scheme:

an insulin pen comprises a needle head and a pen body, wherein the needle head is positioned at the liquid outlet end part of the pen body;

the needle head comprises a needle and a needle sleeve wrapped on the periphery of the needle, the needle is erected in an inner cavity of the needle sleeve, the needle is in sliding connection with the needle sleeve, and one end of the needle sleeve, which is close to the tail end of the needle, is detachably connected with the pen body; the outer side wall of the needle sleeve is provided with a plurality of pressing blocks which are in sliding connection with the needle sleeve; the pressing block is provided with a connecting component, and the connecting component penetrates through the side wall surface of the needle sleeve, so that the pressing block and the puncture needle can synchronously slide.

Preferably, the connecting assembly comprises a connecting rod and a needle seat, the connecting rod penetrates through the needle sleeve and the side wall surface of the pressing block, the needle seat is arranged at one end of the connecting rod penetrating through the inner wall surface of the needle sleeve, and the tail end of the puncture needle penetrates through the needle seat, so that the puncture needle can be arranged in the inner cavity of the needle sleeve along the injection direction.

Preferably, the side wall of the needle sleeve is provided with a perforation, the perforation is in a long strip shape, and the perforation can only be penetrated by the connecting rod.

Preferably, the inner wall of the needle sleeve is provided with a plurality of sections of sliding rails, one side of the needle seat, which is close to the sliding rails, is provided with a sliding block, and one side of the sliding block, which is far away from the needle seat, is detachably connected with the connecting rod.

Preferably, the tail end of the puncture needle is communicated with a telescopic catheter, the telescopic catheter is detachably connected with the puncture needle, and one end, far away from the puncture needle, of the telescopic catheter is in through connection with the pen body.

Preferably, a rubber pad is arranged at one end of the telescopic duct, which is close to the puncture needle, the rubber pad is detachably connected with the telescopic duct, and the puncture needle can be arranged in the rubber pad in a penetrating way.

Preferably, a cap is arranged at one end of the needle sleeve near the tip of the puncture needle, the cap can cover the surface of the needle sleeve, and the cap is detachably connected with the needle sleeve.

Preferably, the cap is provided with a plurality of through holes, a sleeve rope is arranged in each through hole in a penetrating mode, and one end, far away from the cap, of each sleeve rope is detachably connected with the pressing block.

Preferably, the needle further comprises a connecting cylinder, one end of the connecting cylinder is detachably connected with one end of the needle sleeve, which is close to the pen body, and the other end of the connecting cylinder is detachably connected with the pen body.

Preferably, the outer wall surface of the connecting cylinder is provided with external threads, and the wall surface of the pen body, which is in contact with the connecting cylinder, is provided with internal threads.

The technical scheme of the utility model has the following beneficial effects:

(1) The needle seat is erected on the connecting rod which is arranged on the side wall surface of the needle sleeve and the pressing block in a penetrating way, the connecting rod is arranged in the sliding block arranged on the needle seat in a penetrating way, the pressing block can be pressed to enable the connecting rod to move in the strip-shaped through hole formed in the side wall of the needle sleeve and drive the sliding block to slide in the sliding rail on the inner wall surface of the needle sleeve, so that the puncture needle of which the tail end is arranged on the needle seat in a penetrating way is retracted along with the sliding of the needle seat, the needle seat is hidden in the needle sleeve, and the puncture of operators during the process of disassembling and subsequent needle treatment is avoided.

(2) The tail end of the puncture needle is penetrated into a rubber pad arranged on the telescopic catheter, the telescopic catheter is in through connection with the pen body and can guide liquid in the pen body into the puncture needle, and when the needle seat moves towards the telescopic catheter, the telescopic catheter is compressed, and the puncture needle can retract into the needle sleeve.

(3) One end of the needle sleeve, which is close to the tip end of the puncture needle, is provided with a cover cap, and a sleeve rope penetrating through a plurality of through holes arranged in the cover cap is detachably connected with the pressing block, so that the cover cap can cover the surface of the needle sleeve, and the protection effect is further improved.

(4) The syringe needle still includes the connecting cylinder of being connected with the needle cover can be dismantled, and connecting cylinder outer wall is provided with the external screw thread, and the wall of pen body and connecting cylinder contact is provided with the internal screw thread, connecting cylinder and pen body accessible threaded connection, make things convenient for the dismouting syringe needle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram showing the structure of an insulin pen in example 1;

FIG. 2 is a schematic cross-sectional view of the needle of example 1 (with the lancet in an extended state);

FIG. 3 is a schematic cross-sectional view of the needle of example 1 (with the lancet in a retracted state).

Reference numerals: 1-needle head, 11-needle, 111-telescopic catheter, 112-rubber pad, 12-needle sleeve, 121-pressing block, 122-slide rail, 123-cap, 13-connecting rod, 14-needle seat, 141-slide block, 15-connecting cylinder, 2-pen body, 21-pen rack, 22-pen refill, 23-medicine injection component, 231-measurement display window, 232-measurement selection ring and 233-injection pushing key.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example 1

As shown in fig. 1 to 3, the present embodiment provides an insulin pen comprising a pen body 2, and a needle 1 at the liquid outlet end of the pen body 2; the needle head 1 comprises a needle 11 and a needle sleeve 12 wrapped on the periphery of the needle 11, the needle 11 is erected in the inner cavity of the needle sleeve 12, and the needle 11 is in sliding connection with the needle sleeve 12; the plurality of pressing blocks 121 arranged on the outer side wall of the needle sleeve 12 are in sliding connection with the needle sleeve 12, the pressing blocks 121 are provided with connecting components, the connecting components penetrate through the side wall surface of the needle sleeve 12, the pressing blocks 121 are pressed to slide along the needle sleeve 12, the needles 11 can slide synchronously and are hidden in the needle sleeve 12, and the situation that operators are stabbed when the needle head 1 is detached and the subsequent needle head 1 is processed is avoided. One end of the needle sleeve 12, which is close to the tail end of the puncture needle 11, is in threaded connection with the pen body 2, so that the needle head 1 can be conveniently assembled and disassembled with the pen body 2.

In this embodiment, the connecting assembly includes a connecting rod 13 penetrating through the side wall surfaces of the needle sleeve 12 and the pressing block 121, and a needle seat 14 mounted on one end of the connecting rod 13 penetrating through the inner wall surface of the needle sleeve 12, a multi-section sliding rail 122 is provided on the inner wall of the needle sleeve 12, a sliding block 141 is configured on one side of the needle seat 14 near the sliding rail 122, the connecting rod 13 penetrates through one side of the sliding block 141 far from the needle seat 14, and the pressing block 121 and the sliding block 141 are integrally formed by the connecting rod 13; the side wall of the needle sleeve 12 is provided with a strip-shaped perforation, the perforation can only be penetrated by the connecting rod 13, and the perforation limits the pressing block 121 to the outer side of the needle sleeve 12. Because the pressing block 121 and the sliding block 141 are both connected to the connecting rod 13, the movement positions of the sliding block 141 and the pressing block 121 are always consistent, when an operator moves the position of the pressing block 121, the connecting rod 13 penetrating through the sliding block 141 can move in the through hole, so that the sliding block 141 and the needle seat 14 are driven to move along with the sliding rail 122 along the inner wall of the needle sleeve 12, and the pricking needle 11 with the tail end penetrating through the needle seat 14 can synchronously slide and be embedded in the needle sleeve 12.

In this embodiment, the tail end of the needle 11 is connected with a telescopic tube 111, a rubber pad 112 disposed at one end of the telescopic tube 111 near the needle 11 is adhered to the telescopic tube 111, one end of the telescopic tube 111 far away from the needle 11 is connected with the pen body 2 in a penetrating way, so that the liquid in the pen body 2 can be guided, and flows into the needle 11 penetrating through the rubber pad 112, and when the needle holder 14 slides towards the telescopic tube 111, the telescopic tube 111 is compressed, so that the needle 11 can retract into the needle sleeve 12.

In this embodiment, the cap 123 disposed at the end of the needle sheath 12 near the tip of the lancet 11 can cover the surface of the needle sheath 12, and when the lancet 11 is retracted into the needle sheath 12, the cap 123 is covered on the needle sheath 12 to further enhance the protection effect. The cap 123 is provided with two through-holes, wears to be equipped with the lasso in the through-hole, and the one end that the lasso kept away from the cap 123 can overlap and locate the press piece 121, is favorable to fixed cap 123, strengthens the protection.

In this embodiment, the needle 1 further includes a connecting cylinder 15 with one end screwed to one end of the needle sleeve 12 near the pen body 2, and the other end of the connecting cylinder 15 is clamped to the pen body 2. The outer wall surface of the connecting cylinder 15 is provided with external threads, the wall surface of the pen body 2, which is in contact with the connecting cylinder 15, is provided with internal threads, and the connecting cylinder 15 is in threaded connection with the pen body 2, so that the needle head 1 can be conveniently dismounted.

The pen body 2 of this embodiment may be an insulin pen body 2 available in the market, such as an insulin pen body 2 of "nude and pen 4" manufactured by nude and nude (china) pharmaceutical limited company, and the pen body 2 includes a pen rack 21, a pen core 22 for storing insulin liquid medicine, and a drug injection assembly 23 for adjusting dosage and injecting, where the drug injection assembly 23 includes a metering display window 231, a metering selection ring 232, an injection push button 233, a piston rod and a rebound device are disposed in an inner cavity of the drug injection assembly 23, an external thread is disposed at one end of the pen rack 21 far from the drug injection assembly 23, and the drug injection assembly can be screwed with the needle 1. When in use, the pen refill 22 is firstly arranged in the pen rack 21, then the pen rack 21 is arranged in the medicine injection assembly 23, then the needle head 1 is arranged to the pen rack 21, the metering selection ring 232 is regulated after the pen rack 21 is arranged, the piston rod can be pushed to push liquid by pressing the injection push key 233, and the liquid in the pen rack 21 of the pen body 2 can be guided into the needle 11 by the telescopic guide tube 111 which is in through connection with the pen body 2, so that insulin injection is completed.

After the insulin injection is finished, the injection pushing key 233 is pressed again, and the rebound device drives the piston rod and the injection pushing key 233 to restore to the original position; pressing the pressing block 121 causes the slider 141 to move therewith, so that the puncture needle 11 can be retracted by sliding the needle holder 14 in the needle sheath 12, and is housed in the needle sheath 12, and at this time, the telescopic catheter 111 is compressed. The cap 123 is then manually covered, and a string passing through the through hole of the cap 123 is sleeved in the pressing block 121. Finally, the needle 1 is screwed out of the pen rack 21, so that the whole operation is convenient and safe, and the operator can be prevented from being pricked by the needle 1 when the needle 1 is disassembled and the subsequent needle 1 is processed.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An insulin pen is characterized by comprising a needle head (1) and a pen body (2), wherein the needle head (1) is positioned at the liquid outlet end part of the pen body (2);

the needle head (1) comprises a needle (11) and a needle sleeve (12) wrapped on the periphery of the needle (11), the needle (11) is erected in an inner cavity of the needle sleeve (12), the needle (11) is in sliding connection with the needle sleeve (12), and one end, close to the tail end of the needle (11), of the needle sleeve (12) is detachably connected with the pen body (2);

the outer side wall of the needle sleeve (12) is provided with a plurality of pressing blocks (121), and the pressing blocks (121) are connected with the needle sleeve (12) in a sliding manner; the pressing block (121) is provided with a connecting component, and the connecting component penetrates through the side wall surface of the needle sleeve (12), so that the pressing block (121) and the puncture needle (11) can synchronously slide.

2. Insulin pen according to claim 1, characterized in that the connecting assembly comprises a connecting rod (13) and a needle seat (14), the connecting rod (13) is arranged on the side wall surface of the needle sleeve (12) in a penetrating way and the pressing block (121), the needle seat (14) is arranged at one end of the connecting rod (13) penetrating into the inner wall surface of the needle sleeve (12), and the tail end of the needle (11) is arranged on the needle seat (14) in a penetrating way, so that the needle (11) can be arranged in the inner cavity of the needle sleeve (12) in an injecting direction.

3. Insulin pen according to claim 2, characterized in that the side wall of the needle sleeve (12) is provided with perforations, which are elongated and through which the connecting rod (13) can pass only.

4. Insulin pen according to claim 2, characterized in that the inner wall of the needle sleeve (12) is provided with a plurality of sections of slide rails (122), one side of the needle seat (14) close to the slide rails (122) is provided with a sliding block (141), and one side of the sliding block (141) away from the needle seat (14) is detachably connected with the connecting rod (13).

5. Insulin pen according to claim 1, characterized in that the tail end of the needle (11) is connected with a telescopic tube (111), the telescopic tube (111) is detachably connected with the needle (11), and one end of the telescopic tube (111) far away from the needle (11) is connected with the pen body (2) in a penetrating way.

6. Insulin pen according to claim 5, characterized in that the end of the telescopic tube (111) near the needle (11) is provided with a rubber pad (112), the rubber pad (112) is detachably connected with the telescopic tube (111), and the needle (11) can be arranged in the rubber pad (112) in a penetrating way.

7. Insulin pen according to any one of claims 1 to 6, characterized in that the end of the needle sheath (12) near the tip of the lancet (11) is provided with a cap (123), which cap (123) covers the surface of the needle sheath (12), which cap (123) is detachably connected to the needle sheath (12).

8. Insulin pen according to claim 7, characterized in that the cap (123) is provided with a plurality of through holes, in which a lashing wire is threaded, which lashing wire is detachably connected to the pressing block (121) at the end remote from the cap (123).

9. Insulin pen according to claim 1, characterized in that the needle (1) further comprises a connecting cylinder (15), one end of the connecting cylinder (15) is detachably connected with one end of the needle sleeve (12) close to the pen body (2), and the other end of the connecting cylinder (15) is detachably connected with the pen body (2).

10. Insulin pen according to claim 9, characterized in that the outer wall of the connecting cylinder (15) is provided with an external thread and the wall of the pen body (2) contacting the connecting cylinder (15) is provided with an internal thread.