CN205411843U - A subassembly for dose - Google Patents
A subassembly for dose Download PDFInfo
- Publication number
- CN205411843U CN205411843U CN201620106377.XU CN201620106377U CN205411843U CN 205411843 U CN205411843 U CN 205411843U CN 201620106377 U CN201620106377 U CN 201620106377U CN 205411843 U CN205411843 U CN 205411843U
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- Prior art keywords
- mandrel
- tangent plane
- dabber
- ratchet
- assembly
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Abstract
The utility model discloses a subassembly for dose, its technical scheme main points are including shell (1) and dabber (2), shell (1) is equipped with through -hole (11) that supply dabber (2) to run through, screw thread (21) is adjusted around being equipped with to dabber (2) outer wall, be equipped with on dabber (2) outer wall tangent plane (22), both ends are run through along the axial of dabber (2) in tangent plane (22), tangent plane (22) and dabber (2) axle center parallel arrangement, align to grid is gone up in tangent plane (22) has unidirectional ratchet (23), through -hole (11) are other to be equipped with pawl (12) towards tangent plane (22) one side. Outside one -way sliding of extending only can be realized to the dabber under the cooperation of unidirectional ratchet, pawl, supporting unidirectional ratchet's the back of tooth through the pawl, prevents effectively that the dabber from returning to move to all the time, make the dabber and the stopper of a medicament section of thick bamboo keep the butt, be favorable to improving dose accuracy.
Description
Technical field
The utility model relates to a kind of delivery device, more specifically, it relates to a kind of assembly for being administered.
Background technology
In the case of occurring to be carried out regular injections by the people not trained by formal medical, pen type delivery device is applied.This is suffering from the middle of the patient of diabetes increasingly common, and wherein Heal Thyself can enable such patient carry out their effective management of disease.
In certain form of delivery device (such as pen device), use medicament cartridge.These medicament cartridge are contained in delivery device.Such medicament cartridge is substantially in bottomless ampuliform, and the bottom end of medicament cartridge is provided with the stopper of piston shape, and the end of medicament cartridge includes the seal that can puncture.For the dosage from such medicament cartridge distribution medicament, delivery device has dosing mechanism, dosing mechanism uses mandrel being pressed on stopper, after being set by the tune of dosing mechanism, axially pushing mandrel along it makes stopper move a certain distance, thus realizes injecting into the human body the medicament setting doses in medicament cartridge from end.In order to ensure accuracy of dose, it is important that before and after, during the dosage of injection medicament, mandrel one end remains that the stopper with medicament cartridge abuts.So, when designing delivery device, it usually needs consider these problems.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of assembly for being administered, and this assembly can remain that the stopper with medicament cartridge abuts, and improves accuracy of dose.
For achieving the above object, the utility model provides following technical scheme: a kind of assembly for being administered, include shell and mandrel, described shell is provided with the through hole run through for mandrel, and described mandrel outer wall is arranged with regulation screw thread, and described mandrel outer wall is provided with tangent plane, described tangent plane axially penetrates through two ends along mandrel, described tangent plane is arranged with mandrel axis parallel, and evenly distributed on described tangent plane have unidirectional ratchet, is provided with ratchet towards tangent plane side by described through hole.
By use technique scheme, mandrel unidirectional ratchet, ratchet cooperation under, be only capable of and realize outward extending unidirectional sliding, by ratchet against the back of tooth of unidirectional ratchet, effectively prevent mandrel from moving back, thus make mandrel keep abutting with the stopper of medicament cartridge all the time, be conducive to improving accuracy of dose.
The utility model is further arranged to: described tangent plane is provided with two, lays respectively at mandrel opposite sides.
By using technique scheme, the opposite sides of mandrel is equipped with tangent plane, and is equipped with ratchet at the other tangent plane relatively of through hole, the both sides of mandrel is all capable of the clamping force of equilibrium, enables mandrel outwards sliding smoothly；Simultaneously after injection medicament, beneficially stationary spindle so that it is one end remains that the stopper with medicament cartridge abuts, improves accuracy of dose.
The utility model is further arranged to: described tangent plane is curved.
By using technique scheme, add the effective area of tangent plane, also make the width of unidirectional ratchet be increased, it is simple to the mandrel that is clamped that ratchet can be more stable.
The utility model is further arranged to: described tangent plane is the arc of evagination.
By using technique scheme, tangent plane can arrange the arcwall face in convex or concave, is preferably provided with the arcwall face in evagination, is not only more convenient for producing, is simultaneously also beneficial to ratchet to its effective abutting.
The utility model is further arranged to: described ratchet is arcs of recesses.
By using technique scheme, suitable with the unidirectional ratchet of tangent plane, make ratchet can effectively include unidirectional ratchet, and abut with it.
The utility model is further arranged to: described through hole is that half round rectangle is arranged.
By using technique scheme, the cross-sectional structure of through hole is suitable with mandrel, it is possible to stops mandrel to rotate in through hole, plays position-limiting action, make mandrel be only capable of along its axial slip.
The utility model is further arranged to: described mandrel end is provided with abutting block, and described abutting block external diameter is more than outside diameter of mandrel.
By use technique scheme, mandrel by abut block abut with stopper, add the contact area of mandrel and stopper, make mandrel propelling movement during, stopper can stress sliding more stably, be conducive to improving accuracy of dose.
The utility model is further arranged to: on described tangent plane, the spread length of unidirectional ratchet is slightly larger than the medicament cartridge inner liquid medicine degree of depth.
By using technique scheme, after the medicament in medicament cartridge exhausts, mandrel can be backing out in through hole, plays disposable effect, due to pawl ratchet cooperation in use, mandrel is sliding, and unidirectional ratchet, at the ratchet that rubs, easily causes the abrasion of ratchet, therefore to avoid the ratchet after abrasion cannot effectively block unidirectional ratchet when reusing, prevent mandrel retraction, thus shell and mandrel are designed to single use structure, be conducive to ensureing accuracy of dose.
In sum, after the utility model has the advantages that mandrel stopper pressure in medicament cartridge pushes, ratchet abuts unidirectional ratchet, prevent the mandrel reaction force under medicament cylinder pressure strengthens from shrinking back in shell by mandrel, the stopper with medicament cartridge abuts to enable mandrel to remain, improves accuracy of dose.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view for the assembly being administered；
Fig. 2 is A portion structure for amplifying schematic diagram in Fig. 1；
Fig. 3 is the perspective view of shell；
Fig. 4 is the perspective view of mandrel.
Reference: 1, shell；11, through hole；12, ratchet；2, mandrel；21, regulation screw thread；22, tangent plane；23, unidirectional ratchet；24, block is abutted；3, medicament cartridge；31, stopper；4, dosing mechanism.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the utility model is further described.The most identical parts are presented with like reference characters.It should be noted that, in describing below, the word "front", "rear" of use, "left", "right", "up" and "down" refer to the direction in accompanying drawing, and word " bottom surface " and " end face ", " interior " and " outward " refer respectively to the direction towards or away from particular elements geometric center.
nullWith reference to shown in Fig. 1，A kind of assembly for being administered，Mainly include shell 1 and mandrel 2，Shell 1 one end connects medicament cartridge 3，Dosing mechanism 4 it is provided with in shell 1，Realize being in transmission connection by dosing mechanism 4 and medicament cartridge 3 by the mandrel 2 in shell 1，With reference to shown in Fig. 3，Shell 1 is provided with the through hole 11 run through for mandrel 2，With reference to shown in Fig. 4，Mandrel 2 outer wall is arranged with regulation screw thread 21，Substantially workflow is: first medicament cartridge 3 be fixedly installed on shell 1，And mandrel 2 one end that would extend out shell 1 is connected on the stopper 31 in medicament cartridge 3，And the other end of mandrel 2 is connected with dosing mechanism 4，Set the medicament of doses by dosing mechanism 4 regulation after，Push the other end that mandrel 2 abuts relatively with stopper 31，Make mandrel 2 to shell 1 sliding，Thus by stopper 31 sliding in medicament cartridge 3，The medicament in medicament cartridge 3 is made to inject into the human body from end，Complete a whole set of injection process.
With reference to shown in Fig. 4, in injection process, the motion state of mandrel 2 is sliding, mandrel 2 outer wall is provided with tangent plane 22, tangent plane 22 axially penetrates through two ends along mandrel 2, tangent plane 22 is made to arrange with mandrel 2 axis parallel, tangent plane 22 is preferentially provided with two, lays respectively at mandrel 2 opposite sides, and evenly distributed on tangent plane 22 has unidirectional ratchet 23；With reference to shown in Fig. 3, through hole 11 is other is provided with ratchet 12 towards tangent plane 22 side, with reference to shown in Fig. 2, unidirectional ratchet 23 inclined plane is towards stopper 31 one end, vertical plane is towards dosing mechanism 4 one end, therefore mandrel 2 is during outside sliding, unidirectional ratchet 23 smooth and easy can slip over ratchet 12, and after mandrel 2 is slid onto predetermined position, ratchet 12 blocks the vertical plane of unidirectional ratchet 23, thus bounced back by reaction force after avoiding the mandrel 2 stopper 31 in pushing medicament cartridge 3, and two ratchets 12 hold the both sides of mandrel 2, thus effective fixed central spindle 2, mandrel 2 is made to be only capable of realizing unidirectional sliding.
With reference to shown in Fig. 1, by on tangent plane 22 unidirectional ratchet 23 spread length arrange slightly larger than the medicament cartridge 3 inner liquid medicine degree of depth, i.e. after the injection of medicament cartridge 3 inner liquid medicine, the afterbody of mandrel 2 the most just comes off between two ratchets 12, owing to the cooperation of ratchet 12 ratchet is unidirectional, therefore again be connected with dosing mechanism 4 in mandrel 2 cannot be inserted into shell 1, also result in whole delivery device for disposably consuming articles for use.This be due to ratchet 12 ratchet cooperation in use, mandrel 2 is sliding, unidirectional ratchet 23 is at the ratchet 12 that rubs, easily cause the abrasion of ratchet 12, affect the stability of ratchet 12 fixed central spindle 2, thus be unfavorable for the control to accuracy of dose, therefore to avoid the ratchet 12 after abrasion cannot effectively block unidirectional ratchet 23 when reusing, prevent mandrel 2 retraction, thus shell 1 and mandrel 2 are designed to single use structure, be conducive to ensureing accuracy of dose.
Below being only preferred embodiment of the present utility model, protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under the utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. the assembly for administration, include shell (1) and mandrel (2), described shell (1) is provided with the through hole (11) run through for mandrel (2), described mandrel (2) outer wall is arranged with regulation screw thread (21), it is characterized in that: described mandrel (2) outer wall is provided with tangent plane (22), described tangent plane (22) axially penetrates through two ends along mandrel (2), described tangent plane (22) is arranged with mandrel (2) axis parallel, described tangent plane (22) is the most evenly distributed unidirectional ratchet (23), described through hole (11) is other is provided with ratchet (12) towards tangent plane (22) side.
Assembly for being administered the most according to claim 1, is characterized in that: described tangent plane (22) is provided with two, lays respectively at mandrel (2) opposite sides.
Assembly for being administered the most according to claim 1 and 2, is characterized in that: described tangent plane (22) is curved.
Assembly for being administered the most according to claim 3, is characterized in that: the described tangent plane (22) arc in evagination.
Assembly for being administered the most according to claim 4, is characterized in that: described ratchet (12) is in arcs of recesses.
Assembly for being administered the most according to claim 2, is characterized in that: described through hole (11) is arranged in half round rectangle.
Assembly for being administered the most according to claim 1, is characterized in that: described mandrel (2) end is provided with abutting block (24), and described abutting block (24) external diameter is more than mandrel (2) external diameter.
Assembly for being administered the most according to claim 1, is characterized in that: the spread length of the upper unidirectional ratchet (23) of described tangent plane (22) is slightly larger than medicament cartridge (3) the inner liquid medicine degree of depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620106377.XU CN205411843U (en) | 2016-02-03 | 2016-02-03 | A subassembly for dose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620106377.XU CN205411843U (en) | 2016-02-03 | 2016-02-03 | A subassembly for dose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205411843U true CN205411843U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620106377.XU Active CN205411843U (en) | 2016-02-03 | 2016-02-03 | A subassembly for dose |
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| Country | Link |
|---|---|
| CN (1) | CN205411843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111278493A (en) * | 2017-08-31 | 2020-06-12 | 特克法马许可公司 | Drive device for syringe |
-
2016
- 2016-02-03 CN CN201620106377.XU patent/CN205411843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111278493A (en) * | 2017-08-31 | 2020-06-12 | 特克法马许可公司 | Drive device for syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |