CN202478175U - Propelling preloaded type dosing device - Google Patents

Abstract

The utility model discloses a propelling preloaded type dosing device, which comprises a dosing cylinder, double dosing needles, a rotary sleeve and a push rod, wherein a guiding spiral groove is arranged in the inner wall of the top of the dosing cylinder; one end of the rotary sleeve extends into the dosing cylinder, and the other end of the rotary sleeve is a sealing end; a guiding through groove is arranged at the side wall of the rotary sleeve along an axial direction, and the push rod is arranged in the rotary sleeve along the axial direction; and a guiding block which penetrates through the guiding through groove and extends into the guiding spiral groove is arranged on the push rod. During use, a drug container and the double dosing needles are in a sealing state through a membrane in a port and the rotary sleeve with a sealed top end, and absolute sterility in transportation and storage is achieved. The rotary sleeve is rotated to drive the push rod to quickly move down along the guiding spiral groove to push the drug container, the upper needle tips of the double dosing needles pierce a sealing plug on the drug container, and the lower needle tips of the double dosing needles pierce the membrane in the port, so that the drug container is communicated with the inner part of an infusion container in a moment, and the whole processes are in sterile butt. Thus, the overall processes of transportation, storage, butt, drug mixing and infusion are sterile and closed.

Description

Advance the 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 propelling 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:

Advance the prepackage type drug feeding device, comprise adding cartridge case, dosing crosspointer, rotary sleeve and push rod that said dosing crosspointer is located at and adds in the cartridge case;

A said end that adds cartridge case is the interface link, and a needle point of said dosing crosspointer is corresponding with the interface link; Other end inwall adding cartridge case is provided with the guiding helicla flute;

One end of said rotary sleeve puts in the other end that adds cartridge case and is sealed and matched with adding cartridge case axial restraint, radially rotatable cooperation the, and rotary sleeve and add cartridge case; The sidewall of said rotary sleeve is provided with guide groove vertically;

Said push rod is axially disposed within the rotary sleeve along rotary sleeve, on the outer wall of push rod, is provided with guide pad, and said guide pad passes guide groove and puts in the guiding helicla flute.

Further, the other end of said rotary sleeve is a sealed end.

Further; Be symmetrical set two guiding helicla flutes on the inwall of the said other end that adds cartridge case; The sidewall of said rotary sleeve is arranged with two guide grooves that are provided with vertically; Be arranged with two guide pads on the outer wall of said push rod, one of them guide pad passes a guide groove and puts in the guiding helicla flute, and another guide pad passes another guide groove and puts in another guiding helicla flute.

Further, the outer wall of said rotary sleeve is along being circumferentially with pressure ring, and said pressure ring is pressed on the other end that adds cartridge case and with it and is sealed and matched.

Further, said pressure ring is sealed and matched through the sealing ring and the other end that adds cartridge case.

Further, on the said inwall that adds cartridge case and near the interface link annular rubber cushion is set, the needle point that said dosing crosspointer is corresponding with the interface link passes annular rubber cushion.

Further, the said inwall that adds the interface link of cartridge case is a throat structure.

Further, said push rod is arranged in the rotary sleeve along the axis of rotary sleeve, and another needle point of said dosing crosspointer is corresponding with push rod.

Further, the sealed end of said rotary sleeve is provided with suspension ring.

The beneficial effect of this utility model is: when using this propelling 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 is pre-loaded into adds in the cartridge case, rotary sleeve is installed in adds on the cartridge case again, the rotary sleeve through barrier film in the interface and end sealing makes medicament reservoir and dosing crosspointer be in sealing state; Therefore, can reach the transportation and store absolute aseptic.When mixing medicine; Rotate rotary sleeve driving push rod and move down rapidly, press on the medicament reservoir, and then promotion dosing crosspointer moves down along the guiding helicla flute that adds the cartridge case inwall; 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 propelling prepackage type drug feeding device.

Description of drawings

Fig. 1 is for advancing the structural representation of prepackage type drug feeding device;

Fig. 2 is the cross-sectional view that adds cartridge case;

Fig. 3 is the front view of rotary sleeve;

Fig. 4 is along the cross section view of A-A direction among Fig. 3;

Fig. 5 is the cross-sectional view of push rod;

Fig. 6 is the perspective view of push rod;

Fig. 7 is for advancing the seam of prepackage type drug feeding device on infusion vessel and be in the structural representation before using;

Fig. 8 is for advancing the seam of prepackage type drug feeding device at the structural representation on the infusion vessel and after being in use.

In the accompanying drawing: 1-add cartridge case; 2-dosing crosspointer; 4-rotary sleeve; 5-push rod; 6-interface link; 7-guiding helicla flute; 8-guide groove; 9-guide pad; 10-pressure ring; 11-sealing ring; 12-annular rubber cushion; 13-suspension ring; 14-infusion vessel; 15-crosspointer supporting seat; 16-anti-slide fastener; 17-medicament reservoir; 18-annular snap; 19-annular groove; 20-annular slot; 21-passage; 22-interface; 23-barrier film.

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, advance the prepackage type drug feeding device, comprise adding cartridge case 1, dosing crosspointer 2, rotary sleeve 4 and push rod 5.

Wherein, the structure that adds cartridge case is as shown in Figure 2, and the bottom that adds cartridge case 1 is an interface link 6, and the inwall of interface link 6 is a throat structure, is more conducive to the interface size coupling with infusion vessel 14 (being transfusion flexible bag or soft transfusion bottle) like this.Add the inwall of cartridge case 1 and be provided with annular rubber cushion 12 near interface link 6; Dosing crosspointer 2 (the dosing crosspointer 2 of present embodiment adopts the cross pin) is located at and adds in the cartridge case 1; The following needle point of dosing crosspointer 2 passes annular rubber cushion 12 and is stuck on the annular rubber cushion 12, and the crosspointer supporting seat 15 of dosing crosspointer 2 is positioned at the top of annular rubber cushion 12.On the inwall that adds cartridge case 1, be symmetrically arranged with at least two and be barb-like anti-slide fastener 16 (in the present embodiment; On the inwall that adds cartridge case 1, be provided with four anti-slide fasteners); Medicament reservoir 17 pack into add in the cartridge case 1 after, when medicament reservoir 17 mixes medicine with infusion vessel 14 (as shown in Figure 8), the bottle cap of medicament reservoir 17 is stuck in the below of anti-slide fastener 16; Should can stop medicament reservoir 17 to be retreated effectively by anti-slide fastener 16, ensure that mixing medicine carried out smoothly.The upper inside wall that adds cartridge case 1 is provided with guiding helicla flute 7, in the present embodiment, adds on the inwall of cartridge case 1 and is symmetrical set two guiding helicla flutes 7.Along being circumferentially with annular snap 18, on the top end face that adds cartridge case 1, along the circumferential direction be provided with annular groove 19 at the inwall top that adds cartridge case 1.

The structure of rotary sleeve 4 such as Fig. 3 and shown in Figure 4, the bottom of rotary sleeve 4 puts in from the top that adds cartridge case 1 and adds in the cartridge case 1 and be sealed and matched with adding cartridge case 1 axial restraint, radially rotatable cooperation the, and rotary sleeve 4 and add cartridge case 1, and the top of rotary sleeve 4 is a sealed end.In the present embodiment, be circumferentially with pressure ring 10 on the outer wall edge of rotary sleeve 4, the edge is circumferentially with annular slot 20 below pressure ring 10.When rotary sleeve 4 be installed in add on the cartridge case 1 after, annular snap 18 is positioned at annular slot 20, and sealing ring 11 is installed in annular groove 19, pressure ring 10 is pressed on the top that adds cartridge case 1 and with it through sealing ring 11 and is sealed and matched.When rotating rotary sleeve 4, annular snap 18 is rotated in annular slot 20, because of the sealing function of sealing ring 11, makes rotary sleeve 4 both rotatable in adding cartridge case 1, can realize the outer wall and the top seal that adds cartridge case 1 of rotary sleeve 4 again.The sidewall of rotary sleeve 4 is provided with guide groove 8 (in the present embodiment, the sidewall of rotary sleeve 4 is arranged with two guide grooves 8 that are provided with vertically) vertically.

The structure of push rod 5 such as Fig. 5 and shown in Figure 6, push rod 5 is axially disposed within the rotary sleeve 4 along rotary sleeve 4, and push rod 5 is the hollow structure of open upper end, lower end sealing, and the hollow structure that push rod 5 formation top diameter of bores are big, the bottom diameter of bore is little.On the base wall of top endoporus, be evenly equipped with the passage 21 that is provided with vertically, when push rod 5 moved down process, this passage 21 helped the gas flow upper space in the lower space, reduced the air drag that push rod 5 moves down.On the outer wall of push rod 5, be arranged with two guide pads 9, one of them guide pad 9 passes a guide groove 8 and puts in the guiding helicla flute 7, and another guide pad 9 passes another guide groove 8 and puts in another guiding helicla flute 7.Push rod 5 is arranged in the rotary sleeve 4 along the axis of rotary sleeve 4; The last needle point of dosing crosspointer 2 is corresponding with push rod 5; Medicament reservoir 17 be placed on add in the cartridge case 1 after, the center, top of the bottom of push rod 5 and medicament reservoir 17 is corresponding, the last needle point of dosing crosspointer 2 is corresponding with the bottle cap of medicament reservoir 17.

(being the top of rotary sleeve 4) is provided with suspension ring 13 on the sealed end of rotary sleeve 4, can be suspended on the used bracing frame of transfusion with this drug feeding device and with the infusion vessel 14 (as shown in Figure 7) that drug feeding device connects through these suspension ring 13.

When this advanced prepackage type drug feeding device to assemble with infusion vessel, interface link 6 seam that at first will add cartridge case 1 were placed on medicament reservoir 17 and add in the cartridge case 1 on the interface on the infusion vessel 14 22; Again push rod 5 is installed in the rotary sleeve 4; And make the guide pad 9 on the push rod 5 pass the guide groove 8 on the rotary sleeve 4; At last that the guide pad on the push rod 59 is corresponding with guiding helicla flute 7 on adding cartridge case 1, rotary sleeve 4 is installed in adds on the cartridge case 1, guide pad 9 puts in the guiding helicla flute 7.

Use in the time of to advance the prepackage type drug feeding device; To add the interface link 6 of cartridge case 1 and interface 22 sealed butt joint (can adopt the mode of seam, also can adopt the mode that is threaded) on the infusion vessel 14 earlier, in the present embodiment; Infusion vessel 14 adopts transfusion flexible bag; As shown in Figure 7, medicament reservoir 17 is pre-loaded under aseptic condition adds in the cartridge case 1, the rotary sleeve 4 through barrier film in the interface 22 23 and end sealing makes medicament reservoir 17 and dosing crosspointer 2 be in sealing state; Therefore, can reach the transportation and store absolute aseptic.When mixing medicine, rotate rotary sleeve 4, rotary sleeve 4 drives push rod 5 and moves down rapidly along the guiding helicla flute 7 on the inwall that adds cartridge case 1; Directly press on the medicament reservoir 17; And then promote dosing crosspointer 2 and move down, the last needle point of dosing crosspointer 2 pierces through the sealing-plug on the medicament reservoir 17, and the following needle point of dosing crosspointer 2 punctures the interior barrier film 23 of interface 22; Make that moment is communicated with in medicament reservoir 17 and the transfusion flexible bag; As shown in Figure 8, whole process all is in aseptic butt joint, and whole process all moves down realization through rotating rotary sleeve 4 driving push rods 5.And push rod 5 moves down and need rotate and could realize by dependence rotary sleeve 4, so can prevent that in transportation and storing, push rod 5 is oppressed infusion vessels.When medicament reservoir 17 was pushed to bottle cap and is positioned at the below of anti-slide fastener 16, this anti-slide fastener 16 stoped medicament reservoir 17 to be retreated effectively, ensures that mixing medicine carries out smoothly.Because this propelling 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 (9)

1. advance the prepackage type drug feeding device, comprise adding cartridge case (1) and dosing crosspointer (2) that said dosing crosspointer (2) is located at and adds in the cartridge case (1), it is characterized in that: also comprise rotary sleeve (4) and push rod (5);

A said end that adds cartridge case (1) is interface link (6), and a needle point of said dosing crosspointer (2) is corresponding with interface link (6); At the other end inwall that adds cartridge case (1) guiding helicla flute (7) is set;

One end of said rotary sleeve (4) puts in the other end that adds cartridge case (1) and is sealed and matched with adding cartridge case (1) axial restraint, radially rotatable cooperation the, and rotary sleeve (4) and add cartridge case (1); The sidewall of said rotary sleeve (4) is provided with guide groove (8) vertically;

Said push rod (5) is axially disposed within the rotary sleeve (4) along rotary sleeve (4), on the outer wall of push rod (5), is provided with guide pad (9), and said guide pad (9) passes guide groove (8) and puts in the guiding helicla flute (7).

2. propelling prepackage type drug feeding device according to claim 1 is characterized in that: the other end of said rotary sleeve (4) is a sealed end.

3. propelling prepackage type drug feeding device according to claim 2; It is characterized in that: be symmetrical set two guiding helicla flutes (7) on the inwall of the said other end that adds cartridge case (1); The sidewall of said rotary sleeve (4) is arranged with two guide grooves (8) that are provided with vertically; Be arranged with two guide pads (9) on the outer wall of said push rod (5); One of them guide pad (9) passes a guide groove (8) and puts in the guiding helicla flute (7), and another guide pad (9) passes another guide groove (8) and puts in another guiding helicla flute (7).

4. according to claim 1,2 or 3 described propelling prepackage type drug feeding devices, it is characterized in that: the outer wall of said rotary sleeve (4) is along being circumferentially with pressure ring (10), and said pressure ring (10) is pressed on the other end that adds cartridge case (1) and with it and is sealed and matched.

5. propelling prepackage type drug feeding device according to claim 4 is characterized in that: said pressure ring (10) is sealed and matched through the sealing ring (11) and the other end that adds cartridge case (1).

6. propelling prepackage type drug feeding device according to claim 5; It is characterized in that: on the said inwall that adds cartridge case (1) and near interface link (6) annular rubber cushion (12) is set, said dosing crosspointer (2) passes annular rubber cushion (12) with the corresponding needle point of interface link (6).

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

8. propelling prepackage type drug feeding device according to claim 7 is characterized in that: said push rod (5) is arranged in the rotary sleeve (4) along the axis of rotary sleeve (4), and another needle point of said dosing crosspointer (2) is corresponding with push rod (5).

9. propelling prepackage type drug feeding device according to claim 8 is characterized in that: the sealed end of said rotary sleeve (4) is provided with suspension ring (13).

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