CN109078240B - Disposable injection pen with dosage feedback device - Google Patents
Disposable injection pen with dosage feedback device Download PDFInfo
- Publication number
- CN109078240B CN109078240B CN201811154170.XA CN201811154170A CN109078240B CN 109078240 B CN109078240 B CN 109078240B CN 201811154170 A CN201811154170 A CN 201811154170A CN 109078240 B CN109078240 B CN 109078240B
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- Prior art keywords
- mounting cavity
- rod
- bracket
- sleeve
- feedback device
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- 238000002347 injection Methods 0.000 title claims abstract description 76
- 239000007924 injection Substances 0.000 title claims abstract description 76
- 239000003814 drug Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 229940079593 drug Drugs 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
- A61M5/31545—Setting modes for dosing
- A61M5/31548—Mechanically operated dose setting member
- A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a disposable injection pen with a dose feedback device, which comprises: the bracket is formed into a rod shape, and an accommodating cavity which is penetrated along the axial direction of the bracket is defined in the bracket; the first cover body is formed into a rod shape, and one end of the first cover body is connected with one end of the bracket; the adjusting rod is movably arranged in the first mounting cavity along the axial direction of the first mounting cavity, and one end of the adjusting rod is abutted against one end of the bracket; the limiting sleeve is movably arranged in the second mounting cavity along the axial direction of the second mounting cavity, one end of the limiting sleeve is abutted against one end of the bracket, and the other end of the limiting sleeve forms an annular limiting part; the limit knob is movably sleeved on the limit sleeve along the axial direction of the limit sleeve; the screw rod is movably arranged in the third mounting cavity along the axial direction of the third mounting cavity, and one end of the screw rod is connected with one end of the bracket; an injection button. The disposable injection pen with the dosage feedback device has the advantages of simple structure, convenience in adjusting and feeding back the dosage of the liquid medicine and convenience in use.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable injection pen with a dose feedback device.
Background
With the progress of medical technology, various injection pens and injectors are increasingly widely used, and the injection tools in the prior art often cannot feed back the dosage of medicines, so that the injection tools are inconvenient for medical staff to use.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
Therefore, the invention provides the disposable injection pen with the dose feedback device, which has reasonable design, simple structure and metering feedback function.
The disposable injection pen with the dose feedback device comprises a support, wherein the support is in a rod shape, and a containing cavity which penetrates along the axial direction of the support is defined in the support; the first cover body is formed into a rod shape, one end of the first cover body is connected with one end of the bracket, a first mounting cavity which is penetrated along the axial direction of the first cover body is defined in the first cover body, and a first thread groove is formed in the inner wall surface of the first cover body; the adjusting rod is movably arranged in the first mounting cavity along the axial direction of the first mounting cavity, one end of the adjusting rod is stopped against one end of the bracket, a second mounting cavity is limited in the adjusting rod, a first thread matched with the first thread groove is arranged on the outer wall surface of the adjusting rod, and a second thread groove is arranged on the inner wall surface of the adjusting rod; the limiting sleeve is movably arranged in the second mounting cavity along the axial direction of the second mounting cavity, one end of the limiting sleeve is stopped against one end of the bracket, an annular limiting part is formed at the other end of the limiting sleeve, a third mounting cavity is limited in the limiting sleeve, and a second thread matched with the second thread groove is arranged on the outer wall surface of the limiting sleeve; the limiting knob is movably sleeved on the limiting sleeve along the axial direction of the limiting sleeve, and the limiting knob limits the adjusting rod to move when moving to one end of the limiting sleeve; the screw rod is movably arranged in the third mounting cavity along the axial direction of the third mounting cavity, and one end of the screw rod is connected with one end of the bracket; the injection button is arranged in the second mounting cavity and protrudes out of the other end of the adjusting rod, and a pressing rod matched with the other end of the screw rod is arranged in the center of the injection button.
According to the disposable injection pen with the dose feedback device, the first cover body is arranged at one end of the support, the adjusting rod is arranged in the first cover body, the limiting sleeve is arranged in the adjusting rod, the limiting knob is sleeved on the limiting sleeve, and the screw rod is arranged in the limiting sleeve.
The disposable injection pen with the dose feedback device according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the limit knob is movable in the limit sleeve along a plurality of gear positions, each gear position of the limit knob corresponds to each unit of the medicine amount in the bracket, and the total gear position of the limit knob in the limit sleeve is equal to the total unit number of the medicine amount in the bracket.
According to an embodiment of the present invention, the adjusting lever is configured such that the adjusting lever can adjust only an adjustment range of a remaining amount of the medicine in the holder when the amount of the medicine in the holder is smaller than an adjustment range amount of the adjusting lever.
According to one embodiment of the invention, the disposable injection pen with dose feedback device further comprises: the guide sleeve is in a rod shape, a fourth installation cavity which is penetrated in the axial direction is limited in the guide sleeve, the guide sleeve is movably arranged in the third installation cavity along the axial direction of the third installation cavity, and the screw rod is movably arranged in the fourth installation cavity along the axial direction of the fourth installation cavity.
According to one embodiment of the invention, the adjustment assembly comprises: the button clamping seat is arranged in the third mounting cavity and is movably sleeved on the pressing rod.
According to one embodiment of the invention, the first thread has a thread pitch that is greater than the thread pitch of the second thread.
According to one embodiment of the present invention, the disposable injection pen with a dose feedback device further comprises: the screw rod buckle, be equipped with in the circumference of screw rod buckle one end and be used for the joint the bayonet socket of screw rod one end, the other end with the support links to each other.
According to one embodiment of the present invention, the disposable injection pen with a dose feedback device further comprises: the threaded joint is formed into a cylinder body, and is arranged at one end of the bracket and sleeved on the screw rod clamping buckle.
According to one embodiment of the present invention, the disposable injection pen with a dose feedback device further comprises: the second cover body is formed into a rod body with one end open and a cavity defined in the second cover body, and the second cover body is detachably sleeved on the bracket.
According to one embodiment of the present invention, one side of the second cover body is provided with an elongated clamping member disposed along the length direction of the second cover body.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a disposable injection pen with a dose feedback device according to an embodiment of the present invention;
FIG. 2 is an exploded view of a disposable injection pen with a dose feedback device according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of a first cover portion of a disposable injection pen with a dose feedback device according to an embodiment of the present invention;
Fig. 4 is an axial cross-sectional view of fig. 3.
Reference numerals:
A disposable injection pen 100 with a dose feedback device;
A bracket 10;
a first cover 20; a second cover 21; a clamp 22;
An adjusting lever 30;
A limit sleeve 40;
A limit knob 50;
A screw 60; a screw rod buckle 61;
an injection button 70; a card seat 71;
A guide sleeve 80;
threaded joint 90.
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 elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
A disposable injection pen 100 with a dose feedback device according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the disposable injection pen 100 with a dose feedback device according to an embodiment of the present invention includes a holder 10, a first cover 20, an adjustment lever 30, a limit sleeve 40, a limit knob 50, a screw rod 60, and an injection button 70.
Specifically, the bracket 10 is formed into a rod shape, a receiving cavity penetrating along the axial direction of the bracket 10 is limited in the bracket 10, the first cover body 20 is formed into a rod shape, one end of the first cover body 20 is connected with one end of the bracket 10, a first mounting cavity penetrating along the axial direction of the first cover body is limited in the first cover body 20, a first thread groove is formed on the inner wall surface of the first cover body 20, the adjusting rod 30 is movably arranged in the first mounting cavity along the axial direction of the first mounting cavity, one end of the adjusting rod 30 is abutted against one end of the bracket 10, a second mounting cavity is limited in the adjusting rod 30, a first thread matched with the first thread groove is formed on the outer wall surface of the adjusting rod 30, a second thread groove is formed on the inner wall surface of the adjusting rod 30, a limiting sleeve 40 is movably arranged in the second mounting cavity along the axial direction of the second mounting cavity, one end of the limit sleeve 40 is stopped against one end of the support 10, an annular limit part is formed at the other end, a third mounting cavity is limited in the limit sleeve 40, a second thread matched with the second thread groove is arranged on the outer wall surface of the limit sleeve, the limit knob 50 is movably sleeved on the limit sleeve 40 along the axial direction of the limit sleeve 40, the limit knob 50 limits the adjusting rod 30 to move when moving to one end of the limit sleeve 40, the screw rod 60 is movably arranged in the third mounting cavity along the axial direction of the third mounting cavity, one end of the screw rod 60 is connected with one end of the support 10, the injection button 70 is arranged in the second mounting cavity and protrudes out of the other end of the adjusting rod 30, and a pressing rod matched with the other end of the screw rod 60 is arranged at the center of the injection button 70.
In other words, the disposable injection pen 100 with the dose feedback device mainly comprises a support 10, a first cover 20, an adjusting rod 30, a limit sleeve 40, a limit knob 50, a screw rod 60 and an injection button 70, wherein the support 10 is formed into a rod shape, a containing cavity is defined in the support 10 and is used for containing a liquid medicine, the first cover 20 is formed into a rod shape, a first mounting cavity is defined in the first cover 20, one end of the first cover 20 is connected with one end of the support 10, an adjusting notch can be formed in one side of the first cover 20, the adjusting rod 30 is arranged in the first mounting cavity, a first thread groove is formed in the first cover 20, a first thread is formed on the adjusting rod 30, the first thread groove is matched with the first thread, a second mounting cavity is defined in the adjusting rod 30, a second thread groove is formed in the adjusting rod 30, the limit sleeve 40 is movably arranged in the second mounting cavity, one end of the limit sleeve 40 is abutted against one end of the support 10, an annular limit part is formed in the other end of the limit sleeve 40, a third mounting cavity is defined in the limit sleeve 40, a second thread is arranged on the limit sleeve 40, and the second thread is matched with the second thread groove.
Further, the limit knob 50 is sleeved on the limit sleeve 40 and can axially move along the limit sleeve 40, when the limit knob 50 is selectively installed at one end of the limit sleeve 40, the adjusting rod 30 can be limited to move, the screw rod 60 is movably installed in the third installation cavity, one end of the screw rod 60 is connected with one end of the bracket 10, the injection button 70 is installed in the second installation cavity and protrudes out of the other end of the adjusting rod 30, a pressing rod matched with the other end of the screw rod 60 is arranged in the center of the injection button 70, in the use process, the injection button 70 is pressed, and the pressing rod contacts with the other end of the screw rod 60 to press out the liquid medicine in the accommodating cavity.
The operation principle of the disposable injection pen 100 with a dose feedback device according to an embodiment of the present invention is as follows:
When the dosage is regulated, if the regulating rod 30 rotates upwards, the limit knob 50 rotates along with the rotation, other parts do not rotate, the injection button 70 and the limit sleeve 40 move upwards along with the movement of the screw rod 60; if the adjustment lever 30 is rotated downward, the limit knob 50 is rotated, the other parts are not rotated, the injection button 70 and the limit sleeve 40 are moved downward, and the screw 60 is not operated. When the injection button 70 is pressed during injection, the limit sleeve 40, the limit knob 50 and the screw 60 are rotated together, thereby completing injection of the liquid medicine.
Therefore, according to the disposable injection pen 100 with the dose feedback device in the embodiment of the invention, the first cover body 20 is arranged at one end of the bracket 10, the adjusting rod 30 is arranged in the first cover body 20, the limiting sleeve 40 is arranged in the adjusting rod 30, the limiting knob 50 is sleeved on the limiting sleeve 40, the screw rod 60 is arranged in the limiting sleeve 40, and the disposable injection pen 100 with the dose feedback device has a simple structure and is convenient to adjust and use.
According to some embodiments of the present invention, limit knob 50 is movable within limit sleeve 40 along a plurality of gear positions, each gear position of limit knob 50 corresponds to each unit of the amount of drug within stent 10, and the total gear position of limit knob 50 within limit sleeve 40 is equal to the total number of units of the amount of drug within stent 10.
Further, the adjustment lever 30 is configured such that the adjustment lever 30 can adjust only the adjustment range of the remaining amount of the medicine in the holder 10 when the amount of the medicine in the holder 10 is smaller than the adjustment range of the adjustment lever 30.
Specifically, when the disposable injection pen 100 with the dose feedback device adjusts the dose, the adjusting lever 30 is rotated upward, the limit knob 50 is rotated along with the rotation, the limit sleeve 40 is not rotated, and only the limit knob 50 is moved upward relative to the limit sleeve 40. During injection, the limit sleeve 40 and the limit knob 50 synchronously rotate along with the adjusting rod 30 and move downwards together, and no relative movement exists between the limit sleeve 40 and the limit knob 50. I.e. one adjustment is completed, the limit sleeve 40 is raised a certain distance relative to the limit knob 50 after injection. The total stroke of the limit knob 50 corresponds to the total unit number of doses in the vial, i.e. one unit dose of medicament is injected, the limit knob 50 is moved one step, and when the medicament injection is completed, the limit knob 50 is just moved to the top end of the limit sleeve 40. When the residual quantity in the medicine bottle is not enough than the gear carved by the regulating rod 30, the regulating rod 30 can only regulate the gear corresponding to the residual quantity. When the limit knob 50 rises to the top end of the limit sleeve 40, the adjusting rod 30 cannot rotate, and limit is achieved.
Preferably, the disposable injection pen 100 with the dose feedback device further comprises a guide sleeve 80, the guide sleeve 80 is formed into a rod shape, a fourth mounting cavity which is axially penetrated is defined in the guide sleeve 80, the guide sleeve 80 is movably arranged in the third mounting cavity along the axial direction of the third mounting cavity, and the screw rod 60 is movably arranged in the fourth mounting cavity along the axial direction of the fourth mounting cavity. The guide sleeve 80 mainly plays a role of supporting and guiding. When the injection button 70 is pressed during injection, the limit sleeve 40, the limit knob 50, the guide sleeve 80 and the screw 60 are rotated together, thereby completing injection of the liquid medicine.
According to one embodiment of the invention, the disposable injection pen with the dose feedback device further comprises a button cassette 71, wherein the button cassette 71 is arranged in the third mounting cavity and movably sleeved on the pressing rod.
Specifically, the adjusting assembly includes a button holder 71 and is sleeved on a pressing rod, the button holder 71 is connected with the injection button 70, and the pressing rod on the injection button 70 passes through a mounting hole in the center of the adjusting holder to be used for being matched with the screw rod 60.
Preferably, the first thread has a thread pitch greater than the thread pitch of the second thread for ease of adjustment.
Optionally, the disposable injection pen 100 with the dose feedback device further includes a screw rod buckle 61, a bayonet slot for clamping one end of the screw rod 60 is circumferentially arranged at one end of the screw rod buckle 61, the other end is connected with the bracket 10, and the screw rod buckle 61 plays a role in connection and cooperation.
According to one embodiment of the present invention, the disposable injection pen 100 with the dose feedback device further comprises a screw joint 90, the screw joint 90 is formed as a cylinder, the screw joint 90 is simple in structure, and the screw joint 90 is provided at one end of the stand 10 and is sleeved on the screw rod buckle 61 so as to be matched with other parts.
According to yet another embodiment of the present invention, the disposable injection pen with dose feedback device 100 further comprises a second cover 21, the second cover 21 being formed as a rod body having one end opened and a chamber defined therein, the second cover 21 being detachably sleeved on the holder 10, the second cover 21 functioning as a protection tape for the disposable injection pen with dose feedback device 100 when the disposable injection pen with dose feedback device 100 is not in use.
Optionally, one side of the second cover 21 is provided with a long strip-shaped clamping member 22 arranged along the length direction of the second cover 21, and a certain gap is arranged between the long strip-shaped clamping member 22 and the outer side of the second cover 21 so as to facilitate clamping and carrying.
In summary, according to the disposable injection pen 100 with a dose feedback device of the embodiment of the present invention, by disposing the first cover 20 at one end of the stand 10, disposing the adjusting lever 30 in the first cover 20, disposing the limiting sleeve 40 in the adjusting lever 30, and sleeving the limiting knob 50 on the limiting sleeve 40, the screw rod 60 is disposed in the limiting sleeve 40, the disposable injection pen 100 with a dose feedback device has a simple structure, and is convenient for adjusting and feeding back the dosage of the liquid medicine, and is convenient for use.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A disposable injection pen with a dose feedback device, comprising:
a bracket formed in a rod shape, the bracket defining a receiving chamber penetrating in an axial direction thereof inside;
The first cover body is formed into a rod shape, one end of the first cover body is connected with one end of the bracket, a first mounting cavity which is penetrated along the axial direction of the first cover body is defined in the first cover body, and a first thread groove is formed in the inner wall surface of the first cover body;
The adjusting rod is movably arranged in the first mounting cavity along the axial direction of the first mounting cavity, one end of the adjusting rod is stopped against one end of the bracket, a second mounting cavity is limited in the adjusting rod, a first thread matched with the first thread groove is arranged on the outer wall surface of the adjusting rod, and a second thread groove is arranged on the inner wall surface of the adjusting rod;
the limiting sleeve is movably arranged in the second mounting cavity along the axial direction of the second mounting cavity, one end of the limiting sleeve is stopped against one end of the bracket, an annular limiting part is formed at the other end of the limiting sleeve, a third mounting cavity is limited in the limiting sleeve, and a second thread matched with the second thread groove is arranged on the outer wall surface of the limiting sleeve;
The limiting knob is movably sleeved on the limiting sleeve along the axial direction of the limiting sleeve, and the limiting knob limits the adjusting rod to move when moving to one end of the limiting sleeve;
The screw rod is movably arranged in the third mounting cavity along the axial direction of the third mounting cavity, and one end of the screw rod is connected with one end of the bracket;
the injection button is arranged in the second mounting cavity and protrudes out of the other end of the adjusting rod, and a pressing rod matched with the other end of the screw rod is arranged in the center of the injection button;
The button clamping seat is arranged in the third mounting cavity and is movably sleeved on the pressing rod; when the dosage is regulated, if the regulating rod rotates upwards, the limit knob rotates, other parts do not rotate, the injection button and the limit sleeve move upwards, and the screw rod does not act; if the adjusting rod rotates downwards, the limit knob rotates, other parts do not rotate, the injection button and the limit sleeve move downwards, and the screw rod does not act; when in injection, the injection button is pressed, and then the limit sleeve, the limit knob and the screw rod rotate together to complete the injection of the liquid medicine.
2. A disposable injection pen with dose feedback device as defined in claim 1, wherein said limit knob is movable within said limit sleeve along a plurality of gear steps, each gear step of said limit knob corresponding to each unit of the amount of medication within said holder, and wherein the total gear steps of said limit knob within said limit sleeve are equal to the total unit of the amount of medication within said holder.
3. A disposable injection pen with dose feedback device as claimed in claim 2, wherein said adjustment lever is configured to adjust only the adjustment gear of the remaining amount of medicament in said holder when the amount of medicament in said holder is smaller than the adjustment gear amount of said adjustment lever.
4. The disposable injection pen with dose feedback device as defined in claim 1, further comprising:
The guide sleeve is in a rod shape, a fourth installation cavity which is penetrated in the axial direction is limited in the guide sleeve, the guide sleeve is movably arranged in the third installation cavity along the axial direction of the third installation cavity, and the screw rod is movably arranged in the fourth installation cavity along the axial direction of the fourth installation cavity.
5. A disposable injection pen with dose feedback device according to claim 1, wherein the pitch of the first threads is larger than the pitch of the second threads.
6. The disposable injection pen with dose feedback device as defined in claim 1, further comprising:
The screw rod buckle, be equipped with in the circumference of screw rod buckle one end and be used for the joint the bayonet socket of screw rod one end, the other end with the support links to each other.
7. The disposable injection pen with dose feedback device as defined in claim 6, further comprising:
The threaded joint is formed into a cylinder body, and is arranged at one end of the bracket and sleeved on the screw rod clamping buckle.
8. The disposable injection pen with dose feedback device as defined in claim 1, further comprising:
the second cover body is formed into a rod body with one end open and a cavity defined in the second cover body, and the second cover body is detachably sleeved on the bracket.
9. A disposable injection pen with dose feedback device as claimed in claim 8 wherein one side of said second cap is provided with an elongated clip member disposed along the length of said second cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154170.XA CN109078240B (en) | 2018-09-30 | 2018-09-30 | Disposable injection pen with dosage feedback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154170.XA CN109078240B (en) | 2018-09-30 | 2018-09-30 | Disposable injection pen with dosage feedback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109078240A CN109078240A (en) | 2018-12-25 |
| CN109078240B true CN109078240B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811154170.XA Active CN109078240B (en) | 2018-09-30 | 2018-09-30 | Disposable injection pen with dosage feedback device |
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| CN (1) | CN109078240B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141728B (en) * | 2019-05-10 | 2020-12-22 | 江苏德尔福医疗器械有限公司 | Injection pen cap convenient for injection |
| CN110269978B (en) * | 2019-05-14 | 2020-07-31 | 江苏德尔福医疗器械有限公司 | Injection pen |
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| CN109078240A (en) | 2018-12-25 |
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