CN212067203U

CN212067203U - Liquid medicine transfer device with eccentric needle

Info

Publication number: CN212067203U
Application number: CN201921326032.5U
Authority: CN
Inventors: 张信
Original assignee: Shanghai Chengxin Medical Instrument Science & Technology Co ltd
Current assignee: Shanghai Chengxin Medical Instrument Science & Technology Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-12-04
Anticipated expiration: 2029-08-15

Abstract

The utility model relates to a liquid medicine transfer device with an eccentric needle, which comprises a clamping structure (1), a needle base (2) and a cross needle (3), the cross needle (3) comprises an upper needle head and a lower needle head which are coaxially arranged, the upper needle head and the lower needle head are vertically arranged at two sides of the needle seat (2), the clamping structure (1) and the needle base (2) form a cross structure together, the clamping structure is integrally arranged at the bottom of the needle base (2), and is arranged at the same side of the lower end needle head, the lower end needle head is inserted into the soft infusion bag and is clamped with the soft infusion bag rubber plug through a clamping structure (1), the clamping structure (1) comprises at least two elastic clamping jaws (11), each elastic clamping jaw (11) is of a rib plate structure, fan-shaped hollow grooves (25) which are distributed in a cross mode with the elastic clamping jaws (11) are formed in the needle base (2), and needle heads at two ends of the cross needle (3) are provided with progressive openings. Compared with the prior art, the utility model has the advantages of the security is high, application scope is wide.

Description

Liquid medicine transfer device with eccentric needle

Technical Field

The utility model relates to a liquid medicine translator especially relates to a liquid medicine translator of taking eccentric needle.

Background

At present, when freeze-dried powder and powder injection contained in a penicillin bottle are used, liquid medicine or water for injection in a soft infusion bag needs to be pumped out through an injector and injected into the penicillin bottle until enough liquid medicine exists in the penicillin bottle; firstly, the syringe repeatedly pierces the rubber plugs of the penicillin bottle and the soft infusion bag, so that rubber scraps are easy to generate, and the needle contacts with the liquid medicine after contacting with air, and the factors cause the liquid medicine to be polluted, thereby causing the problem of medication safety; secondly, the traditional liquid preparation method is to firstly prepare the medicine and then inject the medicine, suck the medicine in the penicillin bottle into the soft infusion bag in advance, and then bring the soft infusion bag with the prepared medicine into a ward for infusion. After the medicine is dispensed, the empty penicillin bottle is put aside, and the patient and the medical staff are completely unaware of what medicine is dispensed in the infusion soft bag and have no traceability. Once medical care personnel pay little attention to the overflow of the liquid medicine during liquid preparation, or the liquid medicine is wrongly prepared and used, the health of the medical care personnel and the treatment of patients are seriously influenced; in addition, for some special medicines, such as medicines which need to be prepared and used immediately, the traditional preparation method is very inconvenient.

Also disclosed in the prior art is a mixing tip that can achieve mixing of drug and solvent by piercing only once:

CN202459338U discloses a double-needle medicine mixing nozzle with a protective sleeve, wherein the double-needle consists of a needle seat, an upper needle and a lower needle, the upper needle and the lower needle are arranged at two sides of the needle seat, the upper needle and the lower needle are both of hollow structures and are communicated with each other, the upper needle and the lower needle extend along the edge of the needle seat to the upper needle direction to form a medicine mixing body with a cup structure, and the lower needle is sleeved with a telescopic protective sleeve; at least two anti-slip buckles which are in the shape of a barb and used for preventing the penicillin bottle from loosening are symmetrically arranged on the inner wall of the medicine mixing body. Above prior art in mix the design of medicine mouth only need puncture once alright realize mixing the medicine, prevented the liquid medicine pollution, make things convenient for medical personnel to operate, realized that the process of dispensing is simple, convenient, safety.

However, the following drawbacks remain in the practical use of the above products: the liquid passage of a part of large transfusion packages on the market is not positioned at the circle center of the transfusion cover, and the double-valve transfusion cover is provided with two liquid passages which are not positioned at the circle center of the transfusion cover; in the using process after the medicine mixing cup and the infusion bag/bottle are connected, the problems of unstable connection, displacement, shaking or liquid medicine pollution caused by the sliding-out of the medicine mixing cup easily occur, so that serious potential safety hazards exist; in the process of clinical use of the existing medicine mixing cup, a penicillin bottle cannot be pulled out after being inserted, and the replacement of the penicillin bottle cannot be realized. In the in-service clinical use, it often has certain restriction to give the liquid volume, a bag of liquid need mix in several different medicines just can satisfy the dosage demand, the current medicine bottle that mixes that changes xiLin bottle can not realize that a bag of liquid corresponds xiLin bottle of a plurality of dosage units or a bag infusion corresponds several kinds of different xiLin bottle medicines, and simultaneously, mix the unable xiLin bottle that changes of medicine cup, cause xiLin bottle to abandon the joining that just can realize next xiLin bottle medicine together with mixing the medicine cup, the medical very big waste of mixing the medicine cup consumptive material that has led to the fact.

Patent application 201811260397.2 discloses a medicine mixing cup of eccentric needle structure in area, this medicine mixing cup is including mixing the medicine card body, cavity cross needle and clamping structure. The clamping structure comprises an installation part and an elastic clamping jaw, and the medicine mixing clamping body comprises a plurality of annular cup walls arranged at intervals. The projections of the connecting ends of all the elastic clamping claws on the cross needle base along the axial direction form a first circle, the projections of the inner walls of all the annular cup walls on the cross needle base along the axial direction form a second circle, and the first circle and the second circle are partially overlapped. By designing the eccentric structure, the dosing port and the infusion port are separated in the operation process, the special port is special, and the infusion port is not exposed in the air during dosing, so that the secondary pollution of the infusion port is avoided; the infusion port and the medicine adding port are not in the same tube during medicine adding, and the infusion port is not opened, so that repeated disinfection is not needed when the infusion port is opened for infusion, the disinfection cost is saved, the operation trouble of nurses is reduced, and the safety of clinical medicine application is greatly improved.

However, the needle point of the cross needle structure is a frustum structure, the inlet and the outlet of the cross needle structure are circular, and the needle opening is small, so when liquid enters and exits, the inlet and the outlet are blocked by liquid level tension, the liquid cannot smoothly circulate, and in addition, impurities such as particles, air and the like possibly mixed in the liquid cannot be removed in the medicine mixing process. In addition, because the inlet and the outlet are arranged at the top of the needle, when the liquid medicine is sucked back, a small amount of liquid medicine remains in the penicillin bottle under a normal state, and impurity particles in the penicillin bottle and in the operation process also enter the transfusion liquid along with the liquid medicine.

Disclosure of Invention

The utility model aims to provide a liquid medicine transfer device with an eccentric needle for overcoming the defects of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a take liquid medicine translator of eccentric needle, includes clamping structure, needle file and cross needle, the cross needle includes upper end syringe needle and the lower extreme syringe needle of coaxial setting, and upper end syringe needle and lower extreme syringe needle set up perpendicularly on needle file both sides, constitute cross structure jointly with the needle file, clamping structure integration set up in the needle file bottom to with lower extreme syringe needle homonymy setting, the lower extreme syringe needle inserts in the infusion soft bag to press from both sides tightly with infusion soft bag plug through clamping structure, clamping structure includes two at least elastic claw, and each elastic claw is the rib plate structure, is equipped with on the needle file with the fan-shaped fretwork groove of elastic claw cross distribution, the both ends syringe needle of cross needle adopts progressive opening.

Furthermore, the needle file include upper needle file and lower needle file that the integration is connected, the lower extreme syringe needle is equipped with the stiffening rib with lower needle file junction.

Furthermore, the bottom of the clamping structure and the lower needle base are integrally designed, each elastic claw of the clamping structure is provided with a barb-shaped anti-slip clamp body, the cross needle is axially arranged along the needle base, and the central axis of the clamping structure is parallel to the cross needle to form an eccentric structure.

Furthermore, the rib plate structure is a U-shaped groove structure formed by a vertical plate and side plates on two sides of the vertical plate, wherein the inner sides of corners where the side plates on two sides are connected with the needle base are inclined planes, the joints of the inclined planes and the needle base are round inner chamfers, and the included angle between each inclined plane and the horizontal plane ranges from 45 degrees to 60 degrees.

Furthermore, the reinforcing ribs are three and are uniformly distributed at the joints of the lower end needle heads and the lower needle seat.

Further, the needle seat is connected with the lower needle seat through the bulge and the groove of the upper needle seat in a matching mode.

The liquid medicine translator is for taking filtration structure translator or not taking filtration structure translator, and it is in to take filtration structure translator wherein set up hourglass hopper-shaped dead slot in the needle file, thereby it constitutes the filter to set up a slice filtration membrane at least in the hourglass hopper-shaped dead slot, thereby it is used for the buffer memory liquid medicine to leak hopper-shaped recess, enlarges filter area simultaneously, improves filterable speed. The liquid medicine passes through the filter when passing through the cross needle, the filter is used for filtering insoluble particles such as medicine crystals, glass fragments, plastic granules and rubber plugs, and the thickness specification of the filtering membrane is 0.1-25 microns. The translator without the filtering structure can be provided with a funnel-shaped empty groove in the needle seat, but the translator without the filtering film can also be a flat plate with a central through hole.

Furthermore, the progressive openings of the needles at the two ends of the cross needle are single or multiple openings with gradually increased opening areas formed by cutting along the lateral direction of the conical surfaces of the needles at the two ends, the opening surface of the needle at the lower end is an inclined plane, the opening surface of the needle at the upper end is a composite surface with the vertical length of 2-5 mm, the needles with the progressive openings are inserted into a rubber plug of a soft infusion bag or bottle, and the included angle between the inclined plane and the horizontal plane is 30-60 degrees.

Furthermore, the compound surface is formed by sequentially connecting a cylindrical intersecting surface, a wedge surface, a cylindrical intersecting surface and a wedge surface which form an angle of 15-85 degrees with the axis of the cross pin.

Furthermore, the elastic clamping jaws are in a barb shape and used for fixing the medicine transfer device and the soft infusion bag, the free end of at least one elastic clamping jaw inclines towards the outer wall of the elastic clamping jaw along the axial central line, and the inclination angle is 5-45 degrees.

Furthermore, the needle head at the upper end of the hollow needle is directly inserted into the rubber plug of the penicillin bottle, the elastic clamping claws of the clamping structures clamp the rubber plug of the soft infusion bag, the needle head at the upper end of the hollow needle is inserted into one eccentric valve of the rubber plug of the soft infusion bag to realize medicine mixing, and the other eccentric valve is utilized during infusion to realize the separation of medicine mixing and infusion.

Compared with the prior art, the utility model discloses have with following beneficial effect:

(1) the utility model discloses elastic claw rib plate structure of clamping structure, rib plate structure is the U type groove structure that comprises the curb plate of riser and both sides thereof, the corner inboard that both sides curb plate and needle file are connected is the inclined plane, the junction of this inclined plane and needle file is circular interior chamfer, elastic claw itself and with the junction rigidity of needle file big, make liquid medicine translator and soft infusion bag fixed stability strong, the upper portion does not have elastic claw, can make things convenient for the mixture and the suction of the medicine of pulling off formula ann glass bottle clinically, during the use as long as can insert arbitrary specification's xiLin bottle or pulling off formula ann glass bottle with the upper end syringe needle of cavity needle, the commonality is good;

(2) the needle head openings at the two ends of the cross needle are progressive openings, so that when the needle head with the progressive openings is inserted into a rubber plug of a medicine mixing cup or a soft infusion bag, the generation of fragments during the insertion of the needle head can be effectively avoided, the problem of blockage caused by liquid level tension is solved, and the safety and the use convenience of the device are improved; in the process of liquid medicine suck-back, under the action of the composite surface end in the progressive opening, the liquid medicine almost completely flows back to the infusion bag or the penicillin bottle, so that waste is avoided;

(3) the utility model is provided with three reinforcing ribs which are evenly distributed at the joint of the hollow needle on the lower surface of the lower needle seat, and the hollow needle has strong stability, so that the hollow needle can be easily inserted into the rubber plug of the infusion bag or the penicillin bottle;

(4) the utility model discloses a when cross needle both ends adopt the cooperation to connect, be equipped with the filter in the needle file, insoluble particles such as medicine crystallization, glass piece, plastic granules and plug in the solution can be filtered in operation process avoids causing secondary damage, has improved the security of mixing the medicine.

Drawings

FIG. 1 is a perspective view of the lower end of the medical fluid transfer device;

FIG. 2 is a perspective view of the upper end of the liquid medicine transferring device;

FIG. 3 is a cross needle head view of the needle head at the upper end;

FIG. 4 is a cross needle head view of the needle head at the lower end;

FIG. 5 is a perspective view of the upper needle mount;

FIG. 6 is a perspective view of the lower needle mount;

FIG. 7 is a diagram of a filter membrane configuration;

fig. 8 is a bottom view of the drug solution transfer filter.

The reference numbers in the figures illustrate:

1. the clamping structure comprises a needle base 2, a cross needle 3, an elastic clamping jaw 11 and an anti-skid clamping body 12. 21. The needle comprises an upper needle base, 22 parts of a filter membrane, 23 parts of a lower needle base, 24 parts of reinforcing ribs and 25 parts of a hollow groove.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

A liquid medicine transfer device with an eccentric needle, which is shown in figure 1 and comprises a clamping structure 1, a needle base 2 and a cross needle 3, the cross needle 3 comprises an upper end needle head and a lower end needle head which are coaxially arranged, the upper end needle head and the lower end needle head are vertically arranged at two sides of the needle seat 2, the needle holder 2 and the clamping structure 1 are integrated at the bottom of the needle holder 2 to form a cross structure, and is arranged at the same side of the lower end needle head, the lower end needle head is inserted into the soft infusion bag and is clamped with the soft infusion bag rubber plug through the clamping structure 1, the clamping structure 1 comprises three elastic claws 11 which are eccentrically arranged, each elastic claw is of a ribbed plate structure, fan-shaped hollow grooves 25 which are distributed with the elastic claws 12 in a crossed way are arranged on the needle base, the needle heads at the two ends of the cross needle 3 adopt progressive openings, and three reinforcing ribs 24 which are uniformly distributed are arranged at the joint of the needle head at the lower end and the lower needle seat 23.

The rib plate structure is a U-shaped groove structure consisting of a vertical plate and side plates on two sides of the vertical plate, wherein the inner sides of the corners where the side plates on two sides are connected with the needle base 2 are inclined planes, the joints of the inclined planes and the needle base 2 are round inner chamfers, and the included angle between each inclined plane and the horizontal plane ranges from 45 degrees to 60 degrees.

As shown in fig. 2, the bottom of the holding structure 1 and the lower needle base 23 are integrally designed, 3 elastic claws 11 of the holding structure are all provided with an anti-slip clamp body 12 for stably connecting the medicine mixing cup and the soft infusion bag, the anti-slip clamp body 12 is in a barb shape, the free end of at least one elastic claw 11 inclines towards the outer wall of the elastic claw 11 along the axial center line, the stable connection of the medicine mixing cup and the infusion container is ensured, the displacement in the vertical direction and the horizontal direction is avoided, the inclination angle is 5-45 degrees, as shown in fig. 8, the cross needle 3 is axially arranged along the needle base 2, and the central axis of the holding structure 1 is parallel to the cross needle 3 to form an eccentric structure.

The needle heads at the two ends of the cross needle 3 adopt progressive openings, the progressive openings are single or a plurality of openings with the opening area gradually increased by cutting along the side direction of the conical surfaces of the needle heads at the two ends, as shown in figure 3, the needle head at the lower end of the cross needle 3 is cut with a composite surface opening with the vertical length of 2-5 mm on the basis of a conical tip, and the composite surface is formed by sequentially connecting a cylindrical intersection surface, a wedge surface, a cylindrical intersection surface and a wedge surface which form a certain angle with the axis of the cross needle 3; as shown in figure 4, an inclined plane opening is cut on the lower end needle head of the cross needle 3 on the basis of the conical tip, and the included angle between the inclined plane and the horizontal plane is 30-60 degrees.

As shown in fig. 5, 6 and 7, needle file 2 is through the protruding and recess accordant connection of needle file 23 under the last needle file 21, be equipped with funnel-shaped dead slot in the needle file 2, thereby it constitutes the filter to set up a slice filtration membrane 22 at least in the funnel-shaped dead slot, and the liquid medicine passes through the filter when passing through cross needle 3, the filter is used for filtering insoluble particle such as medicine crystallization, glass piece, plastic granules and plug, filtration membrane 22's thickness specification is 0.1 ~ 25 microns.

The upper end needle head end of the cross needle 3 is directly and progressively inserted into a penicillin bottle to avoid generating fragments, and meanwhile, liquid medicine is free from residues during backflow, the lower end needle head of the cross needle 3 is progressively inserted into one eccentric valve of a soft infusion bag rubber plug to realize medicine mixing, so that the blockage of the cross needle 3 due to liquid level tension can be avoided, meanwhile, the elastic clamping jaw 11 of the clamping structure 1 clamps the rubber plug of the soft infusion bag, the progressive opening composite surface can enable the liquid medicine to completely flow back into an infusion bag and the bottle, the waste of the medicine is avoided, the treatment effect is influenced, another eccentric valve is utilized during infusion, and the separation of medicine mixing and infusion is realized.

The eccentric needle structure is suitable for infusion with a liquid passage not in the center of a circle of an infusion cover, such as a double-valve infusion cover, and is stably connected with a rubber plug of a soft infusion bag in the medicine mixing process, so that a penicillin bottle can be directly pulled out of a medicine mixing cup, meanwhile, when the hollow needle is progressively inserted into the rubber plug of the penicillin bottle and the soft infusion bag, no scraps are generated, and the liquid flow is kept smooth.

The foregoing has described in detail certain illustrative embodiments of the invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A liquid medicine transfer device with an eccentric needle comprises a clamping structure (1), a needle seat (2) and a cross needle (3), wherein the cross needle (3) comprises an upper end needle head and a lower end needle head which are coaxially arranged, the upper end needle head and the lower end needle head are vertically arranged on two sides of the needle seat (2) and jointly form a cross structure with the needle seat (2), the clamping structure (1) is integrally arranged at the bottom of the needle seat (2) and arranged at the same side with the lower end needle head, the lower end needle head is inserted into a soft infusion bag and is clamped with a soft infusion bag rubber plug through the clamping structure (1), the liquid medicine transfer device is characterized in that the clamping structure (1) comprises at least two elastic clamping jaws (11), each elastic clamping jaw (11) is of a rib plate structure, and the needle heads at two ends of the cross needle (3;

the needle seat (2) comprises an upper needle seat (21) and a lower needle seat (23) which are integrally connected, a reinforcing rib (24) is arranged at the joint of the lower end needle head and the lower needle seat (23), and fan-shaped hollow grooves (25) which are distributed in a cross way with the elastic clamping jaws (11) are arranged on the needle seat (2);

the rib plate structure is a U-shaped groove structure consisting of a vertical plate and side plates on two sides of the vertical plate, wherein the inner side of a corner where the side plates on two sides are connected with the needle base (2) is an inclined surface, the joint of the inclined surface and the needle base (2) is a circular inner chamfer, and the included angle between the inclined surface and the horizontal plane is 45-60 degrees;

the upper end needle of the hollow needle is directly inserted into the rubber plug of the penicillin bottle, the rubber plug of the soft infusion bag is clamped by the elastic clamping claws (11) of the clamping structure (1), the upper end needle of the hollow needle is inserted into one eccentric valve of the rubber plug of the soft infusion bag to realize medicine mixing, and the medicine mixing and infusion are separated by using the other eccentric valve during infusion.

2. The drug solution transfer device with the eccentric needle as claimed in claim 1, wherein the number of the reinforcing ribs (24) is three and is uniformly distributed at the joint of the lower needle head and the lower needle holder (23).

3. The drug solution transfer device with the eccentric needle is characterized in that the needle seat (2) is matched and connected through the bulge and the groove of the lower needle seat (23) of the upper needle seat (21).

4. The drug liquid transfer device with the eccentric needle is characterized in that the drug liquid transfer device with the filtering structure is a transfer device with a filtering structure or a transfer device without the filtering structure, a funnel-shaped empty groove is arranged in the needle seat (2), at least one filtering membrane (22) is arranged in the funnel-shaped empty groove to form a filter, and the thickness of the filtering membrane (22) is 0.1-25 micrometers.

5. The liquid medicine transfer device with the eccentric needle as claimed in claim 1, wherein the progressive openings of the needles at the two ends of the cross needle (3) are openings with gradually increasing opening areas formed by cutting along the lateral direction of the conical surfaces of the needles at the two ends, the opening surface of the needle at the lower end is an inclined plane, the opening surface of the needle at the upper end is a composite surface, the needles with the progressive openings are inserted into the rubber plug of the soft infusion bag or bottle, and the included angle between the inclined plane and the horizontal plane is 30-60 degrees.

6. The liquid medicine transfer device with the eccentric needle as claimed in claim 5, wherein the compound surface is formed by sequentially connecting a cylindrical intersecting surface, a wedge surface, a cylindrical intersecting surface and a wedge surface which form an angle of 15-85 degrees with the axis of the cross needle (3).

7. The drug solution transferring device with the eccentric needle as claimed in claim 5, wherein the vertical length of the compound surface of the progressive opening is 2-5 mm, and the progressive opening is a single opening or a plurality of openings which are cut along the side direction of the conical surface of the needle head at the two ends.

8. The liquid medicine transfer device with the eccentric needle as in claim 1, wherein the bottom of the clamping structure (1) and the lower needle base (23) are integrally designed, each elastic claw (11) of the clamping structure (1) is provided with a barb-shaped anti-slip clamp body (12), the cross needle (3) is axially arranged along the needle base (2), and the central axis of the clamping structure (1) is parallel to the cross needle (3) to form the eccentric structure.