CN202459348U - Sealing device for halfway-thread precession drug feeder - Google Patents
Sealing device for halfway-thread precession drug feeder Download PDFInfo
- Publication number
- CN202459348U CN202459348U CN2012201001169U CN201220100116U CN202459348U CN 202459348 U CN202459348 U CN 202459348U CN 2012201001169 U CN2012201001169 U CN 2012201001169U CN 201220100116 U CN201220100116 U CN 201220100116U CN 202459348 U CN202459348 U CN 202459348U
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- China
- Prior art keywords
- drug
- drug feeding
- cartridge case
- sealing
- sealing 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 sealing device for halfway-thread precession drug feeder. The sealing device comprises a drug feeding cylinder and an inner sleeve, wherein one end of the drug feeding cylinder is provided with an interface connection end, and a sealing film is arranged on the section of the inner wall of the inner sleeve; an annular convex table I is arranged on the outer wall of the inner sleeve or the drug feeding cylinder, and the outer part of the annular convex table I is provided with an outer thread; and one end of the inner sleeve is sealed and butted with the other end of the drug feeding cylinder. When the sealing device is used, the interface connection end of the drug feeding cylinder is firstly butted with the interface on an infusion container, then drug feeding double needles and a drug container are pre-installed in the drug feeding cylinder, and then the drug container and the drug feeding double needles are at the sealing states by using separation films in the interfaces and the sealing film on the inner sleeve, so that the absolute sterile effect can be realized during the transportation and storage processes. During drum mixing, the sealing film is punched through a press rod, and the drug container is pushed downwards, so that the upper needles of the drug feeding double needles can punch the sealing plug on the drug container, and the lower needles can punch the separation films in the interfaces to realize the sterile sealing effects during the full processes of transporting, storing, butting, mixing drug and infusing.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, the drug feeding device that uses when relating in particular to a kind of mixed medicine.
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 the interface of soft transfusion bottle 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, it is a kind of with after the interface of infusion vessel is connected that this utility model provides, can butt joint under the integral asepsis state, mix medicine and transfusion overall process airtight half way screw thread precession drug feeding device on the sealing device that uses.
In order to solve the problems of the technologies described above, this utility model has adopted following technical scheme:
The sealing device that uses on the half way screw thread precession drug feeding device comprises adding cartridge case and interior cover; A said end that adds cartridge case is the interface link; The cross section of inboard wall of cover is provided with a diaphragm seal in said; In cover or add on the outer wall of cartridge case and along the circumferential direction be provided with an annular boss I, the annular boss I is provided with external screw thread outward, said in an end and the other end sealed butt joint that adds cartridge case of cover.
As a kind of preferred version of this utility model, said in cover or add on the outer wall of cartridge case and along the circumferential direction be provided with annular snap, the external diameter of said annular snap is greater than the internal diameter of annular boss II; Distance between the free end of said annular boss I and interior cover is less than the distance between the free end of annular snap and interior cover.
As the another kind of preferred version of this utility model, be arranged with at least two elasticity cards that are used to support medicament reservoir on the said inwall that adds cartridge case.
As another preferred version of this utility model, the middle part of said diaphragm seal is the position that is prone to expose.
As a kind of improvement project of this utility model, said diaphragm seal is a sealing elastomeric membrane.
As the another kind of improvement project of this utility model, the said interface link that adds cartridge case forms a throat structure.
The beneficial effect of this utility model is: when using the sealing device that uses on this half way screw thread precession drug feeding device; To add the interface link of cartridge case earlier and dock (can adopt seam) with interface on transfusion flexible bag or the soft transfusion bottle; Dosing crosspointer and medicament reservoir be pre-loaded into add in the cartridge case; Through the barrier film in the interface with in the diaphragm seal that puts make medicament reservoir and dosing crosspointer be in sealing state, therefore, can arrive and transport and store absolute aseptic.When mixing medicine, first rotary sleeve moves down more near diaphragm seal depression bar; After waiting to accomplish screw thread travel, rapid downwards pushing overcoat makes depression bar expose diaphragm seal or make diaphragm seal produce deformation from middle part moment of diaphragm seal; Press on the medicament reservoir, and 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 belongs to aseptic butt joint; Therefore, it is sterile closed that the overall process of medicine and transfusion can be realized transporting, stores, docks, mixed to this half way screw thread precession prepackage type drug feeding device.
Description of drawings
Fig. 1 is the structural representation of the sealing device that uses on the half way screw thread precession drug feeding device;
Sealing device seam the structural representation on infusion vessel of Fig. 2 for using on the half way screw thread precession drug feeding device.
In the accompanying drawing: 1-add cartridge case; 2-dosing crosspointer; 3-medicament reservoir; 4-interior cover; 5-overcoat; 6-interface link; 7-crosspointer supporting seat; 8-diaphragm seal; 9-depression bar; 10-elasticity card; 11-annular snap; 12-infusion vessel; 13-interface; 14-barrier film; 15-annular boss I; 16-annular boss II.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment this utility model is done to describe in further detail.
Sealing device as shown in Figure 1, as to use on the half way screw thread precession drug feeding device comprises adding cartridge case 1 and interior cover 4.An end that adds cartridge case 1 is an interface link 6; The cross section of inboard wall of interior cover 4 is provided with a diaphragm seal 8; In cover 4 or add along the circumferential direction be provided with on the outer wall of cartridge case 1 an annular boss I 15 (in the present embodiment, on the outer wall of interior cover 4, be provided with annular boss I 15, and annular boss I 15 be arranged in the top of cover 4); Annular boss the I 15 outer external screw thread that is provided with, an end of interior cover 4 and the other end sealed butt joint that add cartridge case 1.
On interior cover 4, be with overcoat 5; The one end sealing of overcoat 5; Along the circumferential direction be provided with an annular boss II 16 (in the present embodiment, annular boss II 16 is arranged on the bottom near overcoat 5) on the inwall of overcoat 5, in the annular boss II 16 female thread be set; Overcoat 5 through the threaded engagement rotation set on interior cover 4, the blind end of its external sleeve 5 be provided with one stretch to diaphragm seal 8 depression bar 9.If annular boss I 15 is arranged on the outer wall that adds cartridge case 1, then overcoat 5 is adding on the cartridge case 1 through the threaded engagement rotation set.
Along the circumferential direction be provided with annular snap 11 on the outer wall of interior cover 4, the external diameter of annular snap 11 is greater than the internal diameter of annular boss II 16.In the present embodiment, on the outer wall of interior cover 4 and near the seam end, along the circumferential direction be provided with annular snap 11.When mixing medicine, first rotary sleeve 5 promotes overcoat 5 then rapidly downwards; After the annular boss II 16 of overcoat 5 is pushed to the below of annular snap 11; Retreat because of annular snap 11 stops overcoat 5,, also can guarantee can not move backward at mixed medicine process Chinese medicine container 3 even under the situation that does not apply external force.Annular snap 11 also can be arranged on the outer wall that adds cartridge case 1, only need satisfy distance between the free end (being top ports) of annular boss I 15 and interior cover 4 less than the distance between the free end (being top ports) of annular snap 11 and interior cover 4.
The interface link 6 that adds cartridge case 1 forms a throat structure, is more conducive to the interface size coupling with infusion vessel (being transfusion flexible bag or soft transfusion bottle) like this.
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.
When sealing device that uses on this half way screw thread precession drug feeding device and infusion vessel assembling, interface link 6 seam that at first will add cartridge case 1 are on the interface on the infusion vessel 12 13; Again dosing crosspointer 2 is snapped in 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, certainly, also can support dosing crosspointer 2 through the support bar of frangible; Only need support bar is arranged on the bottom of crosspointer supporting seat 7 and supports crosspointer supporting seat 7; In the process that dosing crosspointer 2 moves down, crosspointer supporting seat 7 at first breaks support bar, and dosing crosspointer 2 just can move down smoothly; Then medicament reservoir 3 is placed on and adds in the cartridge case 1; Because of being arranged with at least two elasticity cards 10 (in the present embodiment on the inwall that adds cartridge case 1; Add on the inwall of cartridge case 1 and be arranged with four elasticity cards); Medicament reservoir 3 is supported on (being that elasticity card 10 is stuck between the bottle cap and body of medicament reservoir 3) on the elasticity card 10, makes the position relative fixed of medicament reservoir 3; And then with interior cover 4 seam on the other end that adds cartridge case 1; At last with overcoat 5 rotation sets on interior cover 4.
When using the sealing device that uses on this half way screw thread precession drug feeding device; Interface 13 sealed butt joint (can adopt the mode of seam, also can adopt the mode that is threaded) that will add the interface link and the infusion vessel 12 of cartridge case 1 earlier are in the present embodiment; Infusion vessel 12 adopts transfusion flexible bag; As shown in Figure 2, dosing crosspointer 2 and medicament reservoir 3 be pre-loaded into add in the cartridge case 1, make medicament reservoir 3 and dosing crosspointer 2 be in sealing state through barrier film in the interface 13 14 and diaphragm seals 8 on the interior cover 4; Therefore, can arrive the transportation and store absolute aseptic.When mixing medicine, be rotated down overcoat 5 earlier, depression bar 9 is moved down more near diaphragm seal; Rapid downwards pushing overcoat 5 then makes depression bar expose the middle part of diaphragm seal 8 or makes diaphragm seal produce deformation, presses on the medicament reservoir 3; Promoting medicament reservoir 3 moves down; And then promote dosing crosspointer 2 and move down, the annular boss II 16 on its external sleeve 5 is pushed to the below of annular snap 11, when the last needle point of dosing crosspointer 2 pierces through the sealing-plug on the medicament reservoir 3; The following needle point of dosing crosspointer 2 punctures the barrier film 14 in the interface 13; Make that moment is communicated with in medicament reservoir 3 and the transfusion flexible bag, whole process all belongs to aseptic butt joint, and whole process all is rotated down the back earlier through overcoat 5 and promotes realization (promptly realizing the precession of half way screw thread) downwards on interior cover 4.And the half way helicitic texture can prevent in transportation and the storage; Depression bar breakseal film or compressing infusion vessel; Therefore, it is sterile closed that the overall process of medicine and transfusion can be realized transporting, stores, docks, mixed to the sealing device that uses on this half way screw thread precession drug feeding device.
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 (6)
1. the sealing device that uses on the half way screw thread precession drug feeding device is characterized in that: comprise adding cartridge case (1) and interior cover (4); A said end that adds cartridge case (1) is interface link (6); The cross section of inboard wall of cover (4) is provided with a diaphragm seal (8) in said; In cover (4) or add on the outer wall of cartridge case (1) and along the circumferential direction be provided with an annular boss I (15); Annular boss I (15) the outer external screw thread that is provided with, an end of said interior cover (4) and the other end sealed butt joint that adds cartridge case (1).
2. the sealing device that uses on the half way screw thread precession drug feeding device according to claim 1; It is characterized in that: cover (4) or add on the outer wall of cartridge case (1) and along the circumferential direction be provided with annular snap (11) in said, the external diameter of said annular snap (11) is greater than the internal diameter of annular boss II (16); Distance between the free end of said annular boss I (15) and interior cover (4) is less than the distance between the free end of annular snap (11) and interior cover (4).
3. the sealing device that uses on the half way screw thread precession drug feeding device according to claim 1 is characterized in that: be arranged with at least two elasticity cards (10) that are used to support medicament reservoir (3) on the said inwall that adds cartridge case (1).
4. the sealing device that uses on the half way screw thread precession drug feeding device according to claim 1, it is characterized in that: the middle part of said diaphragm seal (8) is the position that is prone to expose.
5. the sealing device that uses on the half way screw thread precession drug feeding device according to claim 1, it is characterized in that: said diaphragm seal is a sealing elastomeric membrane.
6. according to the sealing device that uses on the described half way screw thread of each claim precession drug feeding device in the claim 1 to 5, it is characterized in that: the said interface link (6) that adds cartridge case (1) forms a throat structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201001169U CN202459348U (en) | 2012-03-16 | 2012-03-16 | Sealing device for halfway-thread precession drug feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201001169U CN202459348U (en) | 2012-03-16 | 2012-03-16 | Sealing device for halfway-thread precession drug feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202459348U true CN202459348U (en) | 2012-10-03 |
Family
ID=46907552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201001169U Expired - Lifetime CN202459348U (en) | 2012-03-16 | 2012-03-16 | Sealing device for halfway-thread precession drug feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202459348U (en) |
-
2012
- 2012-03-16 CN CN2012201001169U patent/CN202459348U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
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| CX01 | Expiry of patent term |