CN202478172U - Thrust unit used on thread propelling preassembled doser - Google Patents
Thrust unit used on thread propelling preassembled doser Download PDFInfo
- Publication number
- CN202478172U CN202478172U CN2012201225085U CN201220122508U CN202478172U CN 202478172 U CN202478172 U CN 202478172U CN 2012201225085 U CN2012201225085 U CN 2012201225085U CN 201220122508 U CN201220122508 U CN 201220122508U CN 202478172 U CN202478172 U CN 202478172U
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- China
- Prior art keywords
- cartridge case
- thrust unit
- depression bar
- screw thread
- feeding device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a thrust unit used on a thread propelling preassembled doser. The thrust unit comprises a dosing cylinder, a rotating sleeve and a pressure rod, wherein the rotating sleeve is sleeved on the dosing cylinder, and the rotating sleeve and the dosing cylinder are axially fixed and rotatably matched in the radial direction; the pressing rod is arranged in the dosing cylinder along the axial direction of the dosing cylinder; and the rotating sleeve can drive the pressure rod to move along the axial direction of the dosing cylinder. When the thrust unit is used, a medicine container and a dosing double-point needle are installed in the dosing cylinder in advance, and are in a sealing state through a diaphragm in an interface and a sealing membrane in the dosing cylinder, thus absolutely sterile transportation and storage can be achieved. During medicine mixing, the rotating sleeve drives the pressure rod to push the medicine container and the dosing double-point needle, an upper point pierces a sealing plug on the medicine container, a lower point pierces the diaphragm in the interface, so that the medicine container is instantly communicated with an infusion container, the whole process is in a sterile butting state, thus the sterile closing process of transportation, storage, butt joint, medicine mixing and infusion can be realized.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to the thrust unit that uses on a kind of drug feeding device.
Background technology
For the medicine in the medicament reservoir is added in the solution in the infusion vessel (being transfusion flexible bag or soft transfusion bottle), then mixed solution is imported such as the patient in the clinical mechanism of hospital.In the prior art, often adopt drug feeding device that medicament reservoir is connected with transfusion flexible bag or soft transfusion bottle.
Drug feeding device of the prior art mainly comprises and adds cartridge case and dosing crosspointer; The dosing tube forms cup-like structure, and the dosing crosspointer is stuck in through the crosspointer supporting seat and adds in the cartridge case, in order to seal mixing the medicine passage; Be provided with barrier film adding on the bottom interior wall cross section of cartridge case; Top adding cartridge case is provided with diaphragm seal, and a needle point of dosing crosspointer is corresponding with barrier film, and another needle point of dosing crosspointer is corresponding with the diaphragm seal of top.During use; This is added cartridge case dock, tear the diaphragm seal that adds on the cartridge case top, medicament reservoir is snapped in add in the cartridge case again with the interface of transfusion flexible bag or soft transfusion bottle; Also promoting the dosing crosspointer when medicament reservoir snaps in moves down; The last needle point of dosing crosspointer pierces through the sealing-plug on the medicament reservoir, the broken barrier film of the following acupuncture of dosing crosspointer and pierce through transfusion flexible bag or soft transfusion bottle on interface on sealing-plug, extruding transfusion flexible bag or soft transfusion bottle just can realize mixing medicine.
Adopt the drug feeding device of said structure, mainly in mixed medicine process have a following deficiency: snap in when adding in the cartridge case at medicament reservoir, must add the diaphragm seal on the cartridge case top by tear initiation, and add cartridge case when snapping in and to contact with the external world, and then pollute.And all closed drug feeding devices that occur in the prior art all can only be implemented in and mix the airtight of medicine process, and can not realize cillin bottle and drug feeding device dock, mix medicine and " overall process is sterile closed " when infusing.
The utility model content
To the above-mentioned deficiency that exists in the prior art, this utility model provides a kind of can advance the thrust unit that uses on the prepackage type drug feeding device at butt joint under the integral asepsis state, mixed medicine and the airtight screw thread of transfusion overall process.
In order to solve the problems of the technologies described above, this utility model has adopted following technical scheme:
Screw thread advances the thrust unit that uses on the prepackage type drug feeding device, comprises adding cartridge case, rotary sleeve and depression bar; Said rotary sleeve be enclosed within add on the cartridge case and with add cartridge case axial restraint, rotatable cooperation radially, said depression bar adds in the cartridge case along adding being axially disposed within of cartridge case, said rotary sleeve can drive the depression bar edge and add moving axially of cartridge case.
As a kind of preferred version of this utility model, saidly add the inwall of cartridge case and be provided with gathering sill vertically near rotary sleeve, the middle part of said rotary sleeve is provided with internal thread hole vertically; Said depression bar is provided with the guide pad that puts in the gathering sill, and an end of depression bar is provided with external screw thread and screws in the internal thread hole of rotary sleeve.
As the another kind of preferred version of this utility model, the said cross section of inboard wall that adds cartridge case is provided with diaphragm seal, and said diaphragm seal is near gathering sill.
As another preferred version of this utility model, said depression bar edge adds the axis setting of cartridge case, and corresponding with the middle part of diaphragm seal.
As a kind of improvement project of this utility model, said diaphragm seal is with to add cartridge case one-body molded.
As the another kind of improvement project of this utility model, the middle part of said diaphragm seal is the position that is prone to expose.
As another improvement project of this utility model, said diaphragm seal is a sealing elastomeric membrane.
The beneficial effect of this utility model is: when using this screw thread to advance the thrust unit that uses on the prepackage type drug feeding device; Earlier medicament reservoir and dosing crosspointer are pre-loaded into and add in the cartridge case; To add cartridge case and dock (can adopt seam) with interface on transfusion flexible bag or the soft transfusion bottle; Make medicament reservoir and dosing crosspointer be in sealing state through barrier film in the interface and the diaphragm seal that adds in the cartridge case, therefore, can reach transportation and store absolute aseptic.When mixing medicine; Rotate rotary sleeve and drive depression bar along adding axially moving down rapidly of cartridge case, depression bar the moment of exerting pressure through diaphragm seal or make diaphragm seal produce deformation to promote medicament reservoir and move down, and then promote the dosing crosspointer and move down; When the last needle point of dosing crosspointer pierces through the sealing-plug on the medicament reservoir; The following needle point of dosing crosspointer punctures the barrier film in the interface, and medicament reservoir and transfusion flexible bag or soft transfusion bottle interior moment are communicated with, and whole process all is in aseptic butt joint; Therefore, to advance the thrust unit that uses on prepackage type drug feeding device can realize transporting, store, dock, mix the overall process of medicine and transfusion sterile closed for this screw thread.
Description of drawings
Fig. 1 advances the structural representation of the thrust unit that uses on the prepackage type drug feeding device for screw thread;
Fig. 2 advances the structural representation of thrust unit seam on infusion vessel that uses on the prepackage type drug feeding device for screw thread.
In the accompanying drawing: 1-add cartridge case; 2-dosing crosspointer; 3-medicament reservoir; 5-rotary sleeve; 6-interface link; 7-crosspointer supporting seat; 8-diaphragm seal; 9-depression bar; 11-gathering sill; 12-infusion vessel; 13-interface; 14-barrier film; 15-guide pad; 16-internal thread hole.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment this utility model is done to describe in further detail.
As shown in Figure 1, screw thread advances the thrust unit that uses on the prepackage type drug feeding device, comprises adding cartridge case 1, rotary sleeve 5 and depression bar 9.Rotary sleeve 5 be enclosed within add on the cartridge case 1 and with add cartridge case 1 axial restraint, radially rotatablely cooperate (rotary sleeve 5 can be fastened on the top that adds cartridge case 1 through the mode of buckle, and can on the top that adds cartridge case 1, rotate).Depression bar 9 adds in the cartridge case 1 along adding being axially disposed within of cartridge case 1, and rotary sleeve 5 can drive depression bar 9 along adding moving axially of cartridge case 1.
Wherein, The bottom that adds cartridge case 1 is an interface link 6; The cross section of inboard wall that adds cartridge case 1 is provided with diaphragm seal 8; Sealing film 8 with add cartridge case 1 can be one-body molded to reduce processing technology, also can with diaphragm seal 8 with add cartridge case 1 and make separately after, again diaphragm seal 8 is fixedly installed on the cross section that adds in the cartridge case 1.Dosing crosspointer 2 is located at through crosspointer supporting seat 7 and adds in the cartridge case 1 and can be along adding moving axially of cartridge case 1, and a needle point of dosing crosspointer 2 is corresponding with interface link 6, and another needle point of dosing crosspointer 2 is corresponding with diaphragm seal 8.The top inner wall that adds cartridge case 1 is provided with gathering sill 11 vertically; The middle part of rotary sleeve 5 is provided with internal thread hole 16 vertically; Depression bar 9 is provided with the guide pad 15 that puts in the gathering sill 11; The top of depression bar 9 is provided with external screw thread and screws in the internal thread hole 16 of rotary sleeve 5, and the bottom of depression bar 9 is corresponding with diaphragm seal 8.In this enforcement, be provided with the gathering sill 11 of two symmetrical distributions, be provided with screwed hole 16, and on depression bar 9, be provided with two guide pads 15 corresponding with gathering sill 11 in the middle inside of rotary sleeve 5 at the inwall that adds cartridge case 1.When assembling this and adding cartridge case 1, rotary sleeve 5 and depression bar 9; At first the top with depression bar 9 screws in the internal thread hole 16 of rotary sleeve 5; Then that two guide pads 15 are corresponding with gathering sill 11 respectively, rotary sleeve 5 is fastened on adds on the cartridge case 1 at last, depression bar 9 is corresponding with diaphragm seal 8.
The position (as being set to thin film) that is prone to expose can be adopted in the middle part of sealing film 8, after depression bar 9 presses on the sealing film, at first exposes the middle part of sealing film, directly presses on the infusion vessel 12 then.Certainly, diaphragm seal 8 also can adopt sealing elastomeric membrane, infusion vessel 12 be pre-loaded into add in the cartridge case 1 after, depression bar 9 presses on the infusion vessel 12 through the sealing elastica.Depression bar 9 is along the axis setting that adds cartridge case 1, and when rotary sleeve 5 rotated on adding cartridge case 1, depression bar 9 can more help exposing diaphragm seal 8 over against the positive middle part of diaphragm seal 8.
When this screw thread advances the thrust unit that uses on prepackage type drug feeding device to assemble with infusion vessel, as shown in Figure 2, at first medicament reservoir 3 is placed on and adds in the cartridge case 1; Dosing crosspointer 2 is snapped in again and add in the cartridge case 1, dosing crosspointer 2 is fixed through crosspointer supporting seat 7 and the friction that adds between cartridge case 1 inwall; Interface link 6 seam that will add cartridge case 1 then are on the interface on the infusion vessel 12 13; Top with depression bar 9 screws in the internal thread hole 16 of rotary sleeve 5 at last, rotary sleeve 5 is fastened on the top that adds cartridge case 1.
When using this screw thread to advance the thrust unit that uses on the prepackage type drug feeding device; Elder generation is pre-loaded into medicament reservoir 3 and dosing crosspointer 2 and adds in the cartridge case 1 under aseptic condition, will add interface 13 sealed butt joint (can adopt the mode of seam, also can adopt the mode that is threaded) of the interface link and the infusion vessel 12 of cartridge case 1 again; In the present embodiment; Infusion vessel 12 adopts transfusion flexible bag, and is as shown in Figure 2, makes medicament reservoir 3 and dosing crosspointer 2 be in sealing state through barrier film in the interface 13 14 and the diaphragm seal 8 that adds in the cartridge case 1; Therefore, can reach the transportation and store absolute aseptic.When mixing medicine; Rotate rotary sleeve 5, rotary sleeve 5 drives depression bar 9 and moves down and expose the middle part of diaphragm seal 8 or make diaphragm seal produce deformation along adding cartridge case 1, presses on the medicament reservoir 3; And promotion dosing crosspointer 2 moves down; When the last needle point of dosing crosspointer 2 pierced through the sealing-plug on the medicament reservoir 3, the following needle point of dosing crosspointer 2 punctured the barrier film 14 in the interface 13, and medicament reservoir 3 and transfusion flexible bag interior moment is communicated with; Whole process all is in aseptic butt joint, and whole process all drives depression bar 9 downward precessions realizations through rotating rotary sleeve 5.And rotary sleeve 5 and depression bar 9 be through threaded engagement, mix depression bar 9 before the medicine be positioned at diaphragm seal above, when mixing medicine, need rotate rotary sleeve 5 and could realize that depression bar 9 moves down, so can prevent in transportation and storage depression bar breakseal film or oppress infusion vessel.Because this screw thread advances the thrust unit that uses on the prepackage type drug feeding device after being pre-loaded into medicament reservoir, to accomplish until transfusion; Related medicament reservoir with all be in aseptic condition with parts that medicine directly contacts; Therefore, can realize that medicine is sterile closed in the overall process of transportation, storage, butt joint, mixed medicine and transfusion.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation this utility model; Although with reference to preferred embodiment this utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of this utility model; And not breaking away from the aim and the scope of this utility model technical scheme, it all should be encompassed in the middle of the claim scope of this utility model.
Claims (7)
1. screw thread advances the thrust unit that uses on the prepackage type drug feeding device, it is characterized in that: comprise adding cartridge case (1), rotary sleeve (5) and depression bar (9); Said rotary sleeve (5) be enclosed within add that cartridge case (1) is gone up and with add cartridge case (1) axial restraint, rotatable cooperation radially; Said depression bar (9) adds in the cartridge case (1) along adding being axially disposed within of cartridge case (1), and said rotary sleeve (5) can drive depression bar (9) along adding moving axially of cartridge case (1).
2. screw thread according to claim 1 advances the thrust unit that uses on the prepackage type drug feeding device; It is characterized in that: saidly add the inwall of cartridge case (1) and be provided with gathering sill (11) vertically near rotary sleeve (5), the middle part of said rotary sleeve (5) is provided with internal thread hole (16) vertically; Said depression bar (9) is provided with the guide pad (15) that puts in the gathering sill (11), and an end of depression bar (9) is provided with external screw thread and screws in the internal thread hole (16) of rotary sleeve (5).
3. screw thread according to claim 2 advances the thrust unit that uses on the prepackage type drug feeding device, and it is characterized in that: the said cross section of inboard wall that adds cartridge case (1) is provided with diaphragm seal (8), and said diaphragm seal (8) is near gathering sill (11).
4. screw thread according to claim 3 advances the thrust unit that uses on the prepackage type drug feeding device, it is characterized in that: said depression bar (9) edge adds the axis setting of cartridge case (1), and corresponding with the middle part of diaphragm seal (8).
5. screw thread according to claim 4 advances the thrust unit that uses on the prepackage type drug feeding device, it is characterized in that: said diaphragm seal (8) and to add cartridge case (1) one-body molded.
6. advance the thrust unit that uses on the prepackage type drug feeding device according to the described screw thread of each claim in the claim 3 to 5, it is characterized in that: the middle part of said diaphragm seal (8) is the position that is prone to expose.
7. advance the thrust unit that uses on the prepackage type drug feeding device according to the described screw thread of each claim in the claim 3 to 5, it is characterized in that: said diaphragm seal is a sealing elastomeric membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201225085U CN202478172U (en) | 2012-03-28 | 2012-03-28 | Thrust unit used on thread propelling preassembled doser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201225085U CN202478172U (en) | 2012-03-28 | 2012-03-28 | Thrust unit used on thread propelling preassembled doser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202478172U true CN202478172U (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201225085U Expired - Lifetime CN202478172U (en) | 2012-03-28 | 2012-03-28 | Thrust unit used on thread propelling preassembled doser |
Country Status (1)
| Country | Link |
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| CN (1) | CN202478172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538427A (en) * | 2020-11-16 | 2021-03-23 | 中国人民解放军陆军军医大学第二附属医院 | Intestinal lymphocyte culture apparatus |
-
2012
- 2012-03-28 CN CN2012201225085U patent/CN202478172U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538427A (en) * | 2020-11-16 | 2021-03-23 | 中国人民解放军陆军军医大学第二附属医院 | Intestinal lymphocyte culture apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |