CN216798415U

CN216798415U - Insulin pen needle capable of preventing repeated use at multiple angles

Info

Publication number: CN216798415U
Application number: CN202122932945.5U
Authority: CN
Inventors: 郭鑫鑫; 杨巧芳; 房紫如
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-06-24
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a multi-angle insulin pen needle capable of preventing repeated use, which comprises a shell, a protective film and a protective cap, and also comprises a fixing plate fixedly connected with the inner surface of the shell, a needle tube mechanism fixedly connected with the fixing plate and the bottom of which is positioned outside the shell, a sliding mechanism sleeved on the needle tube mechanism and sliding in the vertical direction relative to the needle tube mechanism, a buckle mechanism used for fixing the sliding mechanism with the inner surface of the shell, and a limiting mechanism used for preventing the sliding mechanism from sliding upwards, wherein the sliding mechanism and the buckle mechanism are arranged, the sliding block can be locked after injection is finished, the needle tube can not be exposed, complete disposable use is achieved, standard injection angle reference is provided for different patients due to the arrangement of the plane and the inclined plane at the bottom of the sliding rod, the insulin liquid can be ensured to be injected to subcutaneous parts and at correct angles, and safety and feasibility of the injection process are improved.

Description

Insulin pen needle capable of preventing repeated use at multiple angles

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a multi-angle insulin pen needle capable of preventing repeated use.

Background

With the development of society, especially the progress of science and technology, the development of social productivity is greatly promoted; people enjoy the full physical life brought by social progress, and meanwhile, higher and higher requirements are put on medical services related to life health.

Insulin injection is a common operation for diabetics at home and in hospital, namely, insulin is injected into subcutaneous tissues through a needle to play a role in reducing blood sugar. The patient always prepares an insulin pen (storing insulin liquid), a disposable insulin pen needle is connected with the insulin pen by opening an insulin pen needle package when in use, the injection is carried out after the injection part is disinfected, and the insulin liquid is completely absorbed by stopping for 6 to 10 seconds after the injection. The injection site is generally subcutaneous tissue, the skin needle insertion angle should be pinched to 45 degrees to prevent insulin from being injected into muscle when a thin patient injects (the needle head is longer and the needle insertion is 45 degrees), and the injection site can be vertically inserted when a fat patient injects.

After the injection finishes, naked insulin pen syringe needle needs nurse/patient to return and overlaps a needle file protective sheath, because the needle file is big, the syringe needle is tiny, and nurse/patient's returning is very easy inaccurate, has increased the risk that the acupuncture is hindered. And some nurses put the sleeved needle into a treatment plate, because the needle is connected with the needle seat protective sleeve insecurely, the needle is easy to fall off to cause the bloody needle to be exposed in the air, and the risk that other medical personnel have needle stick injuries and are infected with HIV, hepatitis B and the like is increased. Meanwhile, in the case of home diabetes patients, the injection angle is not correct, the insulin pen needle is reused, the insulin pen needle is not disinfected before use, and the injection part is not replaced, in order to save the needle, most patients have reused the insulin needle, which greatly increases the risks of bleeding, infection and induration of the patients, some existing devices also have a device for automatically retracting the needle into a protective shell after use, for example, the Chinese patent with the application number of 201821833110.6 discloses a rotary insulin pen needle, which comprises a needle protective outer shell, wherein the top end of the needle protective outer shell is welded with a needle protective cap fixing seat, a needle rotary fixing seat is embedded in the needle protective outer shell, the top end of the needle protective cap fixing seat is bolted with an upper needle protective cap, and the inner side of the bottom end of the needle protective cap fixing seat is provided with a rotary fixing seat baffle plate, the outer side of the insulin injection needle of the utility model is provided with a needle head protective outer shell, the insulin injection needle is of a telescopic structure, when the insulin injection needle is needed to be used, the needle can be extended out by pushing the needle rotating fixing seat, the insulin injection needle can be retracted into the needle protection outer shell after the use is finished, the needle is prevented from being damaged and deformed, and the needle head protective outer shell is of a combined structure, which is more beneficial to the recycling of the recovered needle head, meanwhile, the hand of the used insulin injection needle is prevented from being injured during treatment, the treatment is safer, although the device solves the problem of needle retraction into the protective shell, the patent only enables the needle tube to retract after injection, but fails to solve the problem of repeated use of the insulin pen needle by patients, embodies the more comprehensive function of the product, in addition, the patent does not refer to the angle of the needle to the skin during injection by the patient.

Therefore, it is a problem to be studied to provide a multi-angle insulin pen needle capable of preventing reuse by controlling the injection angle and making the needle usable only once.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the multi-angle insulin pen needle which can control the injection angle and can only be used once and prevent repeated use.

The purpose of the utility model is realized as follows:

the utility model provides a multi-angle prevents used repeatedly's insulin pen syringe needle, which comprises a housin, be located the casing top and carry out the protection film of shutoff with the casing top, be located the bottom of casing and establish the protective cap on the casing, still include the fixed plate of the internal surface fixed connection with the casing, be located the outside needle tubing mechanism of casing with fixed plate fixed connection and bottom, establish on needle tubing mechanism and for the gliding slide mechanism of needle tubing mechanism in vertical direction, a buckle mechanism for making slide mechanism and the internal surface fixed of casing, a stop gear for preventing slide mechanism upwards sliding, slide mechanism's bottom is contradicted patient's skin and upwards slides, the bottom of needle tubing mechanism exposes and pricks the needle operation to the patient, buckle mechanism fixes slide mechanism and casing and makes the bottom of needle tubing mechanism be located slide mechanism and not expose.

The needle tube mechanism comprises a fixed tube fixedly connected with the lower surface of the fixing plate and located in the vertical direction, a first needle tube penetrating through the fixing plate and fixedly connected with the top of the fixed tube, and a second needle tube fixedly connected with the bottom of the fixed tube, wherein the first needle tube, the fixed tube and the second needle tube are communicated.

The sliding mechanism comprises a sliding block, a sliding rod and a spring, wherein the sliding block is sleeved on the fixed cylinder and slides relative to the fixed cylinder, the sliding rod is fixedly connected with the bottom of the sliding block, the bottom of the sliding rod penetrates through the bottom of the shell and is located outside the shell, the spring is sleeved on the fixed cylinder, and two ends of the spring are fixedly connected with the lower surface of the fixed plate and the upper surface of the sliding block respectively.

Through holes in the vertical direction are formed in the sliding block and the sliding rod, the fixed cylinder and the second needle tube are arranged in the through holes, and the sum of the length of the sliding block in the vertical direction and the length of the sliding rod in the vertical direction is smaller than the sum of the length of the fixed cylinder and the length of the second needle tube.

The lower surface of the slide bar is a horizontal plane, a chamfer is arranged on the side face of the bottom of the slide bar, and the bottom of the chamfer is connected with the lower surface of the slide bar.

The clamping mechanism comprises a clamping body located on the inner surface of the shell, and a clamping groove located on the side face of the sliding block and matched with the clamping body, and the lower surface of the clamping groove is an inclined plane.

The buckle body is including the mounting groove that is located the casing internal surface, pass through the torsional spring that the connecting rod is connected, with the front and back both sides face of mounting groove, with the cardboard of the one end fixed connection of torsional spring, the other end of torsional spring is connected with the left surface of mounting groove, and the torsional spring cover is established on the connecting rod and is rotated for the connecting rod.

The limiting mechanism comprises a plurality of limiting blocks arranged at the joint of the lower surface of the fixing plate and the shell, and the limiting blocks are uniformly distributed in an annular mode along the inner surface of the shell.

Has the positive and beneficial effects that: the sliding mechanism and the buckle mechanism are arranged, the sliding block can be locked after injection is finished, the needle tube can not be exposed any more, the needle tube is completely disposable, standard injection angle reference is provided for different patients (fat/thin), correct injection angle of insulin liquid to subcutaneous parts is ensured, and safety and feasibility of the injection process are improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of portion A;

FIG. 3 is a schematic view of the present invention in use for insertion of a needle into a patient;

FIG. 4 is a schematic diagram of the present invention after use;

in the figure, the following steps are carried out: the device comprises a shell 1, a protective cap 2, a protective film 3, a fixing plate 4, a cylindrical barrel 5, a first needle tube 6, a second needle tube 7, a sliding block 8, a sliding rod 9, a spring 10, a through hole 11, a clamping groove 12, a clamping body 13, a limiting block 14, a diagonal plane 15, a mounting groove 16, a clamping plate 17, a connecting rod 18 and a torsion spring 19.

Detailed Description

The utility model is further illustrated by the following figures and examples.

Example 1

As shown in figure 1, the multi-angle insulin pen needle capable of preventing repeated use comprises a shell 1, a protective film 3 which is positioned at the top of the shell 1 and seals the top of the shell 1, a protective cap 2 which is positioned at the bottom of the shell 1 and is sleeved on the shell 1, a fixing plate 4 which is fixedly connected with the inner surface of the shell 1, a needle tube mechanism which is fixedly connected with the fixing plate 4 and has the bottom positioned outside the shell 1, a sliding mechanism which is sleeved on the needle tube mechanism and slides in the vertical direction relative to the needle tube mechanism, a buckling mechanism which is used for fixing the sliding mechanism and the inner surface of the shell, and a limiting mechanism which is used for preventing the sliding mechanism from sliding upwards, wherein the bottom of the sliding mechanism is abutted against the skin of a patient and slides upwards, the bottom of the needle tube mechanism is exposed and carries out the needle pricking operation on the patient, and after the needle pricking is finished, the buckling mechanism fixes the sliding mechanism and the shell 1 so that the bottom of the needle tube mechanism is positioned in the sliding mechanism and is not exposed, the possibility of repeated use is avoided, and complete disposable use is realized; the bottom of the needle tube mechanism is positioned in the sliding mechanism before and after use, so that the needle tube is protected from being exposed, and the risk of needle stick injury is greatly reduced.

Needle tubing mechanism includes the solid fixed cylinder 5 that just is located vertical direction with the lower surface fixed connection of fixed plate 4, pass fixed plate 4 and with the top fixed connection's of solid fixed cylinder 5 first needle tubing 6, with the bottom fixed connection's of solid fixed cylinder 5 second needle tubing 7, first needle tubing 6, solid fixed cylinder 5 and second needle tubing 7 intercommunication, insulin loops through first needle tubing 6 through the insulin pen, gu fixed cylinder 5 and second needle tubing 7 get into the patient internal, second needle tubing 7 pricks into the patient internal.

The sliding mechanism comprises a sliding block 8, a sliding rod 9 and a spring 10, wherein the sliding block 8 is sleeved on the fixed cylinder 5 and slides relative to the fixed cylinder 5, the sliding rod 9 is fixedly connected with the bottom of the sliding block 8, the bottom of the sliding rod penetrates through the bottom of the shell 1 and is located outside the shell 1, the spring 10 is sleeved on the fixed cylinder 5, and two ends of the spring are fixedly connected with the lower surface of the fixed plate 4 and the upper surface of the sliding block 8 respectively. Through holes 11 in the vertical direction are formed in the sliding block 8 and the sliding rod 9, the fixed cylinder 5 and the second needle tube 7 are arranged in the through holes, and the sum of the length of the sliding block 8 in the vertical direction and the length of the sliding rod 9 in the vertical direction is smaller than the sum of the length of the fixed cylinder 5 and the length of the second needle tube 7. The lower surface of slide bar 9 is the horizontal plane, the side of slide bar 9 bottom is equipped with scarf 15, the bottom of scarf 15 is connected with the lower surface of slide bar 9, the gradient of scarf 15 is 45, the plane of slide bar 9 bottom and 45 scarf provide standard injection angle reference for different patients (fat/thin), ensure that insulin liquid injects the correctness of subcutaneous part and angle, the security and the feasibility of injection process have been increased, when needs are to patient's injection insulin, the bottom of slide bar 9 is contradicted on patient's skin, at this moment, scarf 15 is contradicted with patient's skin and is pressed casing 1 downwards, then slide bar 9 and slider 8 move upwards, then the bottom of second needle tubing 7 exposes and pierces the patient is internal, accomplish the insulin injection.

The buckling mechanism comprises a buckling body 13 positioned on the inner surface of the shell 1 and a clamping groove 12 positioned on the side surface of the sliding block 8 and matched with the buckling body 13, the lower surface of the clamping groove 12 is an inclined surface, when the sliding block 8 and the sliding rod 9 move upwards, because the lower surface of the clamping groove 12 is an inclined surface and the upper surface of the clamping groove 12 is a plane, the clamping groove passes through the buckling body 13 and moves upwards until the top of the sliding block 8 is abutted against the limiting mechanism, at the moment, the second needle tube 7 pricks into the deepest part of a patient, an insulin pen is started to be pushed to inject insulin into the patient, when the second needle tube 7 is pulled upwards, because the bottom of the sliding rod 8 is not contacted with the patient, the spring 10 pushes the sliding block 8 and the sliding block 9 to move downwards, at the moment, when the clamping groove 12 passes through the buckling body 13, the clamping groove is buckled and matched with the buckling body 13, the position of the sliding block 8 is fixed, at the moment, the inside of the displacement through hole 11 of the second needle tube 7 is not exposed outwards, avoiding the reuse of the needle.

As shown in fig. 2, the fastening body 13 includes a mounting groove 16 located on the inner surface of the housing, a torsion spring 19 connected to the front and rear sides of the mounting groove 16 through a connecting rod 18, and a fastening plate 17 fixedly connected to one end of the torsion spring 19, the other end of the torsion spring 19 is connected to the left side of the mounting groove 16, the torsion spring 19 is sleeved on the connecting rod 18 and rotates relative to the connecting rod 18, the fastening plate 17 is fixedly connected to one end of the torsion spring 19 and is in an obliquely upward state, the bottom of the fastening plate 17 is located in the mounting groove 16 to prevent the top of the slider 8 from abutting against the fastening plate 17, the top of the fastening plate 17 is located outside the mounting groove 16, the other end of the torsion spring 19 is fixedly connected to the left side of the mounting groove 16, the right side of the top of the mounting groove 16 is provided with an inclined surface, so that when the slider 8 passes through, the left side of the slider 8 pushes the fastening plate 17 to rotate leftward and attach to the inclined surface of the top of the mounting groove 16, because the bottom of the fastening groove 12 is an inclined surface, cardboard 17 does not buckle with draw-in groove 12 when then draw-in groove 12 moves up, and when slider 9 drove draw-in groove 12 and moves down, draw-in groove 12 was through the position of cardboard 17, and torsional spring 19 promoted cardboard 17 and rotates right, because the top of cardboard 12 is the plane, then cardboard 17 and draw-in groove 12 snap-fit block slider 8 and move down.

The limiting mechanism comprises a plurality of limiting blocks 14 arranged at the joint of the lower surface of the fixing plate 4 and the shell 1, the limiting blocks 14 are uniformly distributed along the inner surface of the shell 1 in an annular mode, and the limiting blocks 14 prevent the sliding block from moving upwards.

As shown in fig. 3 and 4, when in use, the protective film 3 is firstly uncovered to be connected with the tail end of the insulin pen, after the skin of a patient is disinfected, a proper injection angle is selected according to the body type (fat/thin) of the patient, the fat plane is used as the reference of the bottom of the slide rod 9, the thin inclined plane 15 is used as the reference of the bottom of the slide rod 9, the initial state of the spring 10 is normal without elasticity, when the injection is started, the sliding block 8 and the slide rod 9 move upwards, the spring 10 contracts, and the sliding block 8 presses the clamping plate 17 and the torsion spring 19 when passing through the clamping plate 17, so that the clamping plate 17 is tightly attached to the shell 1, and the sliding block 8 smoothly slides through. As the slider 8 slides upward, the first needle cannula 6 and the second needle cannula 7 of the fixed cylinder 5 are not moved, and the second needle cannula 7 is exposed and pricked into the subcutaneous tissue of the patient. After the injection finishes, slide bar 9 leaves skin, compressed spring 10 has the effort to slider 8 and slide bar 9, force slider 8 downstream, draw-in groove 12 is when the cardboard 17, compressed torsional spring 19 forces cardboard 17 to spring into draw-in groove 12, prevented slider 8 downstream, stopper 14 has made slider 8 upward movement, slider 8 locks and dies the effect that plays protection second needle tubing 7, and then prevents that the needle stick from hindering and having avoided patient's used repeatedly insulin pen syringe needle.

Example 2

Red pigment is added on the side edge of the bottom of the sliding rod 9, and after injection, traces are left around the injection part to remind that the injection is not repeated when insulin is injected next time; a disposable alcohol cotton sheet is added in the protective cap 2 to remind the patient to take a note of disinfection before injection; the surface subsides of casing 1 have the antiskid area, and increase frictional force is conveniently connected insulin pen syringe needle and insulin pen.

As shown in figures 3 and 4, when the skin disinfecting device is used, firstly, the protective film 3 is uncovered and is connected with the tail end of an insulin pen, after the skin of a patient is disinfected, a proper injection angle is selected according to the body type (fat/thin) of the patient, the fat plane is used as the reference of the bottom of the sliding rod 9, the thin inclined plane 15 is used as the reference of the bottom of the sliding rod 9, the initial state of the spring 10 is normal without elasticity, when the injection is started, the sliding block 8 and the sliding rod 9 move upwards, the spring 10 contracts, and the sliding block 8 presses the clamping plate 17 and the torsion spring 19 when passing through the clamping plate 17, so that the clamping plate 17 is tightly attached to the shell 1, and the sliding block 8 smoothly slides through the clamping plate. As the slider 8 slides upward, the first needle cannula 6 and the second needle cannula 7 of the fixed cylinder 5 are not moved, and the second needle cannula 7 is exposed and pricked into the subcutaneous tissue of the patient. After the injection finishes, slide bar 9 leaves skin, compressed spring 10 has the effort to slider 8 and slide bar 9, force slider 8 downstream, draw-in groove 12 is when the cardboard 17, compressed torsional spring 19 forces cardboard 17 to spring into draw-in groove 12, prevented slider 8 downstream, stopper 14 has made slider 8 upward movement, slider 8 locks and dies the effect that plays protection second needle tubing 7, and then prevents that the needle stick from hindering and having avoided patient's used repeatedly insulin pen syringe needle.

The sliding mechanism and the buckle mechanism are arranged, the sliding block can be locked after injection is finished, the needle tube can not be exposed any more, the needle tube is completely disposable, standard injection angle reference is provided for different patients (fat/thin), correct injection angle of insulin liquid to subcutaneous parts is ensured, and safety and feasibility of the injection process are improved.

Claims

1. The utility model provides a multi-angle prevents used repeatedly's insulin pen syringe needle, includes the casing, is located the casing top and carries out the protection film of shutoff with the casing top, is located the bottom of casing and establishes the protective cap on the casing, its characterized in that: the needle tube mechanism is fixedly connected with the inner surface of the shell, the bottom of the needle tube mechanism is located outside the shell, the sliding mechanism is sleeved on the needle tube mechanism and slides in the vertical direction relative to the needle tube mechanism, the buckling mechanism is used for enabling the sliding mechanism and the inner surface of the shell to be fixed, the limiting mechanism is used for preventing the sliding mechanism from sliding upwards, the bottom of the sliding mechanism is abutted against the skin of a patient and slides upwards, the bottom of the needle tube mechanism is exposed and pricks the patient, and the buckling mechanism fixes the sliding mechanism and the shell so that the bottom of the needle tube mechanism is located in the sliding mechanism and is not exposed.

2. The multi-angle insulin pen needle for preventing reuse according to claim 1, characterized in that: the needle tube mechanism comprises a fixed tube fixedly connected with the lower surface of the fixing plate and located in the vertical direction, a first needle tube penetrating through the fixing plate and fixedly connected with the top of the fixed tube, and a second needle tube fixedly connected with the bottom of the fixed tube, wherein the first needle tube, the fixed tube and the second needle tube are communicated.

3. The multi-angle insulin pen needle for preventing reuse according to claim 2, characterized in that: the sliding mechanism comprises a sliding block, a sliding rod and a spring, wherein the sliding block is sleeved on the fixed cylinder and slides relative to the fixed cylinder, the sliding rod is fixedly connected with the bottom of the sliding block, the bottom of the sliding rod penetrates through the bottom of the shell and is located outside the shell, the spring is sleeved on the fixed cylinder, and two ends of the spring are fixedly connected with the lower surface of the fixed plate and the upper surface of the sliding block respectively.

4. The multi-angle insulin pen needle for preventing reuse according to claim 3, characterized in that: through holes in the vertical direction are formed in the sliding block and the sliding rod, the fixed cylinder and the second needle tube are arranged in the through holes, and the sum of the length of the sliding block in the vertical direction and the length of the sliding rod in the vertical direction is smaller than the sum of the length of the fixed cylinder and the length of the second needle tube.

5. The multi-angle insulin pen needle for preventing reuse according to claim 3, characterized in that: the lower surface of the slide bar is a horizontal plane, a chamfer is arranged on the side face of the bottom of the slide bar, and the bottom of the chamfer is connected with the lower surface of the slide bar.

6. The multi-angle insulin pen needle for preventing reuse according to claim 3, characterized in that: the clamping mechanism comprises a clamping body located on the inner surface of the shell, and a clamping groove located on the side face of the sliding block and matched with the clamping body, and the lower surface of the clamping groove is an inclined plane.

7. The multi-angle insulin pen needle for preventing reuse according to claim 6, characterized in that: the buckle body is including the mounting groove that is located the casing internal surface, pass through the torsional spring that the connecting rod is connected, with the front and back both sides face of mounting groove, with the cardboard of the one end fixed connection of torsional spring, the other end of torsional spring is connected with the left surface of mounting groove, the torsional spring cover is established on the connecting rod and is rotated for the connecting rod.

8. The multi-angle insulin pen needle for preventing reuse according to claim 1, characterized in that: the limiting mechanism comprises a plurality of limiting blocks arranged at the joint of the lower surface of the fixing plate and the shell, and the limiting blocks are uniformly distributed in an annular mode along the inner surface of the shell.