CN202459351U - Threaded screw-in preloading type medicine feeder - Google Patents

Abstract

The utility model discloses a threaded screw-in preloading type medicine feeder. The threaded screw-in preloading type medicine feeder comprises a medicine feeding cylinder, double medicine feeding needles, a guide sleeve, a rotation sleeve and a pressing rod; the cross section of the inner wall of one end of the guide sleeve is provided with a sealing film, and the end of the guide sleeve is tightly butted with the medicine feeding cylinder; the rotation sleeve is sleeved at the other end of the guide sleeve and axially fixed with and radially and ratably matched with the other end of the guide sleeve; the pressing rod is arranged in the guide sleeve; and the rotation sleeve can drive the pressing rod to move along the guide sleeve in an axial direction. During use, a medicine container is needed to be preloaded into the medicine feeding cylinder, and the medicine container and the double medicine feeding needles are in the sealed state by a partition film in a port and the sealing film in the guide sleeve, so that the absolutely sterile state can be ensured during transportation and storage. During medicine mixing, the pressing rod pushes the medicine container and the double medicine feeding needles, an upper point punctures a sealing plug on the medicine container, and a lower needle point punctures the partition film in the port, so that the medicine container and a transfusion container are communicated instantly, and the whole process is the sterile butting state; and therefore, the sterile and closed state can be guaranteed in the whole processes of transportation, storage, butting, medicine mixing and transfusion.

Description

Screw thread precession prepackage type drug feeding device

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 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 and can under the integral asepsis state, dock, mixed medicine and the airtight screw thread precession prepackage type drug feeding device 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 precession prepackage type drug feeding device comprises adding cartridge case, dosing crosspointer, fairlead, rotary sleeve and depression bar; Said dosing crosspointer is located at and adds in the cartridge case, and an end cross section of inboard wall of said fairlead is provided with diaphragm seal, an end of fairlead and with add the cartridge case sealed butt joint; Said rotary sleeve be enclosed within on the other end of fairlead and with fairlead axial restraint, rotatable cooperation radially, said depression bar is axially disposed within the fairlead along fairlead, said rotary sleeve can drive depression bar and move axially along fairlead.

As a kind of preferred version of this utility model, a said end that adds cartridge case is the interface link, adds the other end and the fairlead sealed butt joint of cartridge case, and a needle point of dosing crosspointer is corresponding with the interface link, and another needle point of dosing crosspointer is corresponding with diaphragm seal.

As the another kind of preferred version of this utility model, the middle part of said diaphragm seal is the position that is prone to expose.

As another preferred version of this utility model, said diaphragm seal is a sealing elastomeric membrane.

As a kind of improvement project of this utility model, the inwall of said fairlead is provided with gathering sill vertically, and 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 the top of depression bar is provided with external screw thread and screws in the internal thread hole of rotary sleeve, and the bottom of depression bar is corresponding with diaphragm seal.

As the another kind of improvement project 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 improvement project of this utility model, said depression bar is along the axis setting of fairlead, and corresponding with the middle part of diaphragm seal.

As the further again improvement project of this utility model, the said interface link that adds cartridge case is a throat structure.

The beneficial effect of this utility model is: when using this screw thread precession prepackage type drug feeding device; To add cartridge case earlier and dock (can adopt seam) with interface on transfusion flexible bag or the soft transfusion bottle; Medicament reservoir be pre-loaded into add in the cartridge case, again with fairlead with add the cartridge case sealed butt joint, make medicament reservoir and dosing crosspointer be in sealing state through barrier film in the interface and the diaphragm seal in the fairlead; Therefore, can reach the transportation and store absolute aseptic.When mixing medicine; Rotate rotary sleeve and drive depression bar along axially the moving down rapidly of fairlead, 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, it is sterile closed that the overall process of medicine and transfusion can be realized transporting, stores, docks, mixed to this screw thread precession prepackage type drug feeding device.

Description of drawings

Fig. 1 is the structural representation of screw thread precession prepackage type drug feeding device;

Fig. 2 is the structural representation of screw thread precession prepackage type drug feeding device seam on infusion vessel.

In the accompanying drawing: 1-add cartridge case; 2-dosing crosspointer; 3-medicament reservoir; 4-fairlead; 5-rotary sleeve; 6-interface link; 7-crosspointer supporting seat; 8-diaphragm seal; 9-depression bar; 10-elasticity card; 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 precession prepackage type drug feeding device comprises adding cartridge case 1, dosing crosspointer 2, fairlead 4, rotary sleeve 5 and depression bar 9.The bottom that adds cartridge case 1 is an interface link 6; Dock with fairlead 4 bottom end seal on the top that adds cartridge case 1; The bottom cross section of inboard wall of fairlead 4 is provided with diaphragm seal 8; 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.Rotary sleeve 5 be enclosed within on the top of fairlead 4 and with fairlead 4 axial restraints, radially rotatablely cooperate (rotary sleeve 5 can be fastened on the top of fairlead 4 through the mode of buckle, and can on fairlead 4, rotate).Depression bar 9 is axially disposed within the fairlead 4 along fairlead 4, and rotary sleeve 5 can drive depression bar 9 and move axially along fairlead 4.

Wherein, The inwall of fairlead 4 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, and 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 the present embodiment, 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 of fairlead 4.When assembling this fairlead 4, 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 two gathering sills 11 respectively, at last rotary sleeve 5 is fastened on the fairlead 4, 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 of fairlead 4, and when rotary sleeve 5 rotated on fairlead 4, depression bar 9 can more help exposing diaphragm seal 8 over against the positive middle part of diaphragm seal 8.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.

When this screw thread precession prepackage type drug feeding device and infusion vessel assembling, as shown in Figure 2, interface link 6 seam that at first will add cartridge case 1 are on the interface on the infusion vessel 12 13; 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; 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 fairlead 4 seam on the top that adds cartridge case 1, the top of depression bar 9 is screwed in the internal thread hole 16 of rotary sleeve 5, rotary sleeve 5 is fastened on the top of fairlead 4.

When using this screw thread precession prepackage type 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, medicament reservoir 3 is pre-loaded under aseptic condition adds in the cartridge case 1, the diaphragm seal 8 through barrier film in the interface 13 14 and fairlead 4 bottoms makes medicament reservoir 3 and dosing crosspointer 2 be in sealing state; 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 fairlead 4, 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 precession prepackage type drug feeding device is accomplished until transfusion after being pre-loaded into medicament reservoir; 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 (8)

1. screw thread precession prepackage type drug feeding device comprises adding cartridge case (1) and dosing crosspointer (2), and said dosing crosspointer (2) is located at and adds in the cartridge case (1), it is characterized in that: also comprise fairlead (4), rotary sleeve (5) and depression bar (9); One end cross section of inboard wall of said fairlead (4) is provided with diaphragm seal (8), an end of fairlead (4) and with add cartridge case (1) sealed butt joint; Said rotary sleeve (5) be enclosed within on the other end of fairlead (4) and with fairlead (4) axial restraint, rotatable cooperation radially; Said depression bar (9) is axially disposed within the fairlead (4) along fairlead (4), and said rotary sleeve (5) can drive depression bar (9) and move axially along fairlead (4).

2. screw thread precession prepackage type drug feeding device according to claim 1; It is characterized in that: a said end that adds cartridge case (1) is interface link (6); The other end and fairlead (4) sealed butt joint that add cartridge case (1); One 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).

3. screw thread precession prepackage type 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.

4. screw thread precession prepackage type drug feeding device according to claim 1, it is characterized in that: said diaphragm seal is a sealing elastomeric membrane.

5. according to the described screw thread precession of each claim prepackage type drug feeding device in the claim 1 to 4; It is characterized in that: the inwall of said fairlead (4) is provided with gathering sill (11) vertically, and 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 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).

6. screw thread precession prepackage type drug feeding device according to claim 5 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).

7. screw thread precession prepackage type drug feeding device according to claim 6 is characterized in that: said depression bar (9) is along the axis setting of fairlead (4), and corresponding with the middle part of diaphragm seal (8).

8. screw thread precession prepackage type drug feeding device according to claim 7 is characterized in that: the said interface link (6) that adds cartridge case (1) is a throat structure.

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