Medical pad for a pen-injector

Abstract

The utility model provides a special medical gasket of pen type syringe, include: sealing element, sealing device and sealing groove, sealing device sets up in the inside of sealing element, and sealing device includes connecting rod, sealing plug, pressing rod, a plurality of exhaust hole, sealing cavity and elastic ring, one end fixed connection in the inside of sealing element of connecting rod, sealing plug sliding connection is in the inside of connecting rod, one end fixed connection in one end of sealing plug of pressing rod, a plurality of exhaust hole all are set up in the inside of connecting rod, sealing cavity sets up in the inside of sealing element. The utility model provides a special medical gasket of pen type syringe, through sealing groove cooperation sealing device, make the area of contact between sealing element and syringe cylinder inner wall surface increase, thereby increase the sealing effect of sealing element, through the air in sealing cavity makes elastic ring have elasticity, increase sealing effect while not increasing friction, convenient to the movement of sealing element.

Description

Technical Field

[0001] This utility model relates to the field of gaskets, and more particularly to a medical gasket specifically for pen syringes. Background Technology

[0002] A pen injector is a new type of portable medical device that resembles a writing pen. It injects medication by manually pumping a liquid through a pump. It mainly consists of a pen cap, a pen holder, a pen core, a pen body, and a needle. The pen cap and pen holder are usually made of PC / ABS material to protect the pen core and mechanical components. The pen core consists of a rubber membrane, a pen core tube, and a rubber piston, and is the system for storing the medication. The pen core tube is usually made of medium or high borosilicate glass. The pen body is the core mechanical component, including the piston rod, dosage display, dosage adjustment, and injection push button. The needle is usually made of stainless steel and includes an outer needle cap, an inner needle cap, the needle itself, and a protective cover.

[0003] The prior art patent application with publication number CN223143895U describes a gasket made of medical-grade rubber material, which has good elasticity and sealing properties, effectively preventing drug leakage and improving the accuracy of drug dosage. The gasket shape matches the internal structure of the syringe barrel, allowing it to be tightly installed inside the pen syringe to ensure smooth drug injection.

[0004] However, since the gasket surface is flat, the contact area between the gasket and the inner wall of the syringe barrel is limited, thus there is still room for improvement in the sealing effect of the gasket.

[0005] Therefore, it is necessary to provide a medical pad specifically for pen syringes to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a medical pad specifically for pen-type syringes, which solves the problem that the contact area between the current pad and the inner wall surface of the syringe barrel is limited, and there is still room for improvement in the sealing effect.

[0007] To solve the above-mentioned technical problems, this utility model provides a medical pad for pen-type syringes, comprising: a sealing element, a sealing device, and a sealing groove;

[0008] The sealing device is disposed inside the sealing member. The sealing device includes a connecting rod, a sealing plug, a pressing rod, multiple vent holes, a sealing cavity, and an elastic ring. One end of the connecting rod is fixedly connected to the inside of the sealing member. The sealing plug is slidably connected to the inside of the connecting rod. One end of the pressing rod is fixedly connected to one end of the sealing plug. The multiple vent holes are all opened inside the connecting rod. The sealing cavity is opened inside the sealing member. The elastic ring is fixedly connected to the surface of the sealing member and its interior is connected to the sealing cavity.

[0009] The sealing groove is formed inside the seal.

[0010] Preferably, the pressing rod is a spring telescopic rod, which is disposed inside the connecting rod and one end is fixedly installed on one end of the sealing plug.

[0011] Preferably, the sealing device further includes a limiting device disposed inside the pressing rod, the limiting device being used to limit the distance between the pressing rod and the connecting rod.

[0012] Preferably, the limiting device includes a limiting sleeve and a limiting rod. The limiting sleeve is fixedly connected to the inside of the connecting rod, and the limiting rod is threadedly connected between the inside of the limiting sleeve and the connecting rod for limiting.

[0013] Preferably, the limiting device further includes a rotating handle and multiple rotating holes, one side of the rotating handle is fixedly connected to one end of the limiting rod, and the multiple rotating holes are all opened inside the rotating handle.

[0014] Preferably, the limiting device further includes multiple anti-slip grooves, all of which are formed inside the rotating handle.

[0015] Preferably, the limiting device is a buckle, which is disposed inside the pressing rod and is used to limit the distance between the pressing rod and the connecting rod.

[0016] Compared with related technologies, the medical pad for pen-type syringes provided by this utility model has the following beneficial effects:

[0017] This utility model provides a medical gasket specifically for pen-type syringes. By using a sealing groove in conjunction with a sealing device, the contact area between the sealing element and the inner wall surface of the syringe barrel is increased, thereby increasing the sealing effect of the sealing element. At the same time, the air inside the sealing cavity makes the elastic ring elastic, which increases the sealing effect without increasing friction and facilitates the movement of the sealing element. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of a medical pad for a pen-type syringe provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the structure of the seal.

[0020] Figure 3 for Figure 1 A cross-sectional structural schematic diagram of the seal shown;

[0021] Figure 4 for Figure 1 The diagram shown is a structural schematic of the compression tablet.

[0022] The following are the labels in the diagram: 1. Seal, 2. Sealing device, 21. Connecting rod, 22. Sealing plug, 23. Pressing rod, 24. Vent hole, 25. Sealing cavity, 26. Elastic ring, 27. Limiting device, 271. Limiting sleeve, 272. Limiting rod, 273. Rotating handle, 274. Rotating hole, 275. Anti-slip groove, 3. Sealing groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of a preferred embodiment of a medical pad for a pen-type syringe provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the seal. Figure 3 for Figure 1 A cross-sectional structural schematic diagram of the seal shown; Figure 4 for Figure 1 The diagram shows the structure of the press pad. A medical pad for a pen-type syringe includes: a seal 1, a sealing device 2, and a sealing groove 3;

[0025] The sealing device 2 is disposed inside the sealing member 1. The sealing device 2 includes a connecting rod 21, a sealing plug 22, a pressing rod 23, multiple vent holes 24, a sealing cavity 25, and an elastic ring 26. One end of the connecting rod 21 is fixedly connected to the inside of the sealing member 1. The sealing plug 22 is slidably connected to the inside of the connecting rod 21. One end of the pressing rod 23 is fixedly connected to one end of the sealing plug 22. Multiple vent holes 24 are opened inside the connecting rod 21. The sealing cavity 25 is opened inside the sealing member 1. The elastic ring 26 is fixedly connected to the surface of the sealing member 1 and its interior is connected to the sealing cavity 25.

[0026] The sealing groove 3 is formed inside the sealing element 1.

[0027] The seal 1 is a gasket specifically designed for pen syringes in the prior art.

[0028] The elastic ring 26 is an air bladder, which is fixedly connected to the surface of the seal 1 and connected to the sealing cavity 25 inside, so that the air inside the sealing cavity 25 can enter the interior of the air bladder.

[0029] The sealing groove 3 is used to divide the seal 1 into layers, thereby increasing the contact area between the seal 1 and the inner wall surface of the syringe barrel and increasing the sealing effect.

[0030] The pressing rod 23 is a spring telescopic rod, which is located inside the connecting rod 21 and has one end fixedly installed on one end of the sealing plug 22.

[0031] The sealing device 2 further includes a limiting device 27, which is disposed inside the pressing rod 23 and is used to limit the distance between the pressing rod 23 and the connecting rod 21.

[0032] The limiting device 27 includes a limiting sleeve 271 and a limiting rod 272. The limiting sleeve 271 is fixedly connected to the inside of the connecting rod 21, and the limiting rod 272 is threadedly connected between the inside of the limiting sleeve 271 and the connecting rod 21 for limiting.

[0033] The limiting rod 272 is a threaded rod, and the limiting sleeve 271 is a threaded sleeve that is adapted to the limiting rod 272. It is used to move to one side inside the limiting sleeve 271 when the limiting rod 272 is rotated to one side, so as to squeeze the pressing rod 23.

[0034] The limiting device 27 also includes a rotating handle 273 and a plurality of rotating holes 274. One side of the rotating handle 273 is fixedly connected to one end of the limiting rod 272, and the plurality of rotating holes 274 are all opened inside the rotating handle 273.

[0035] The handle 273 is used to facilitate the rotation of the limit rod 272.

[0036] By rotating the handle 273 to one side, the limiting rod 272 moves to one side inside the limiting sleeve 271, thereby squeezing the pressing rod 23, increasing the elasticity of the pressing rod 23, allowing more gas inside the connecting rod 21 to enter the sealing cavity 25, and increasing the sealing effect of the elastic ring 26.

[0037] The limiting device 27 also includes a plurality of anti-slip grooves 275, all of which are formed inside the rotating handle 273.

[0038] The anti-slip groove 275 is used to increase the friction of the rotating handle 273, thereby facilitating the rotation of the rotating handle 273.

[0039] The limiting device 27 is a buckle, which is disposed inside the pressing rod 23 and is used to limit the distance between the pressing rod 23 and the connecting rod 21.

[0040] The working principle of the medical pad for pen-type syringes provided by this utility model is as follows:

[0041] In use, the sealing groove 3, in conjunction with the elastic ring 26, increases the contact area between the seal 1 and the inner wall surface of the syringe barrel, thereby increasing the sealing effect of the seal 11.

[0042] Simultaneously, when the seal 1 moves, if the elastic ring 26 is compressed, it will enter the interior of the sealing cavity 25 and then enter the interior of the connecting rod 21 through multiple vent holes 24, compressing and moving the sealing plug 22 and the pressing rod 23, thereby facilitating the movement of the seal 1. When the seal 1 stops moving, the pressing rod 23 pushes the sealing plug 22 to one side inside the connecting rod 21, allowing the gas inside the connecting rod 21 to enter the interior of the sealing cavity 25 to fill the elastic ring 26 and increase the sealing effect of the elastic ring 26.

[0043] Compared with related technologies, the medical pad for pen-type syringes provided by this utility model has the following beneficial effects:

[0044] This utility model provides a medical pad for pen-type syringes. By using a sealing groove 3 in conjunction with a sealing device 2, the contact area between the sealing element 11 and the inner wall surface of the syringe barrel is increased, thereby increasing the sealing effect of the sealing element 11. At the same time, the air inside the sealing cavity 25 makes the elastic ring 26 elastic, which increases the sealing effect without increasing friction and facilitates the movement of the sealing element 11.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A medical pad specifically for pen-type syringes, characterized in that, include: Seals, sealing devices, and sealing grooves; The sealing device is disposed inside the sealing member. The sealing device includes a connecting rod, a sealing plug, a pressing rod, multiple vent holes, a sealing cavity, and an elastic ring. One end of the connecting rod is fixedly connected to the inside of the sealing member. The sealing plug is slidably connected to the inside of the connecting rod. One end of the pressing rod is fixedly connected to one end of the sealing plug. The multiple vent holes are all opened inside the connecting rod. The sealing cavity is opened inside the sealing member. The elastic ring is fixedly connected to the surface of the sealing member and its interior is connected to the sealing cavity. The sealing groove is formed inside the seal.

2. The medical pad for a pen-type syringe according to claim 1, characterized in that, The pressing rod is a spring telescopic rod, which is located inside the connecting rod and has one end fixedly installed on one end of the sealing plug.

3. The medical pad for a pen-type syringe according to claim 1, characterized in that, The sealing device further includes a limiting device, which is disposed inside the pressing rod and is used to limit the distance between the pressing rod and the connecting rod.

4. A medical pad for a pen-type syringe according to claim 3, characterized in that, The limiting device includes a limiting sleeve and a limiting rod. The limiting sleeve is fixedly connected to the inside of the connecting rod, and the limiting rod is threadedly connected between the inside of the limiting sleeve and the connecting rod to limit the movement.

5. A medical pad for a pen-type syringe according to claim 4, characterized in that, The limiting device also includes a rotating handle and multiple rotating holes. One side of the rotating handle is fixedly connected to one end of the limiting rod, and the multiple rotating holes are all opened inside the rotating handle.

6. A medical pad for a pen-type syringe according to claim 5, characterized in that, The limiting device also includes multiple anti-slip grooves, all of which are formed inside the rotating handle.

7. A medical pad for a pen-type syringe according to claim 6, characterized in that, The limiting device is a buckle, which is disposed inside the pressing rod and is used to limit the movement between the pressing rod and the connecting rod.

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